CROSS REFERENCES TO RELATED APPLICATION
This application claims priorities of Chinese Patent Application Nos. 202323075767.4, 202311523202.X and 202311523235.4 filed on Nov. 14, 2023, the entire contents of which are hereby incorporated by reference.
TECHNICAL FIELD
The present disclosure relates to the technical field of outdoor equipment, in particular to a folding chair bracket and a folding chair.
BACKGROUND
Folding chairs are widely popular in outdoor activities such as camping, beach leisure and sports events because of their characteristics of lightweight and portability. Traditional folding chairs often use a quadrilateral structure as a main support structure, connecting various components through spring ropes and controlling the folding and unfolding of the folding chairs under an elastic action. However, the quadrilateral structure has poor stability and is unstable during use, causing safety hazards.
In order to solve the above problems, the utility model with an authorized notification number CN218127667U discloses a novel automatic folding chair, its folding chair bracket includes an automatic folding assembly, a rear supporting seat and two front supporting seats which are symmetrically arranged left and right, a telescopic rod in the automatic folding assembly is an elastic rod which may extend axially under the action of an external action force or an own internal force, and retracts axially under the own internal force or the external action force, a self-locking piece is arranged on the telescopic rod, in a locked state, the self-locking piece may limit telescoping of the telescopic rod, and in an unlocked state, the telescopic rod may actively extend and retract to store and fold the folding chair.
In the above novel automatic folding chair, a triangular structure is formed by the rear supporting seat and the two front supporting seats, which has good stability. However, in order to be foldable, the telescopic rod and an adapter are added, the structure is relatively complex, and folding and unfolding operations are relatively complex. The self-locking piece is arranged on an upper side of the telescopic rod, when people sit, if the weight is too large, it is prone to accidentally touching the self-locking piece on the upper side for unlocking, causing safety hazards.
SUMMARY
A technical problem to be solved by the present disclosure is to provide a folding chair bracket with a simple structure, convenient use and safety.
Another technical problem to be solved by the present disclosure is to provide a folding chair with a simple structure, convenient use and safety.
In order to solve the above technical problems, according to one aspect of the present disclosure, a folding chair bracket is provided, and includes:
- a rear supporting seat;
- a left connecting rod, with a rear end hinged with the rear supporting seat to be capable of rotating in a horizontal direction;
- a right connecting rod, with a rear end hinged with the rear supporting seat to be capable of rotating in the horizontal direction;
- a left front supporting seat, connected to a front end of the left connecting rod;
- a right front supporting seat, connected to a front end of the right connecting rod, one side of the right front supporting seat opposite to the left front supporting seat being provided with a connecting recess;
- a front connecting rod, with a left end hinged to the left front supporting seat to be capable of rotating in the horizontal direction;
- a folding locking assembly, arranged on the right front supporting seat and having a locked state and an unlocked state, where in the locked state, the folding locking assembly may lock and fix a right end of the front connecting rod into the connecting recess of the right front supporting seat, and in the unlocked state, the front connecting rod may be removed from the connecting recess;
- a plurality of supporting legs, correspondingly and detachably inserted to the rear supporting seat, the left front supporting seat and the right front supporting seat from bottoms; and
- a plurality of supporting rods, correspondingly and detachably inserted to the rear supporting seat, the left front supporting seat and the right front supporting seat from tops.
In order to solve the above technical problems, according to another aspect of the present disclosure, a folding chair is provided, and includes one above folding chair bracket and a flexible seat surface connected with an upper part of the folding chair bracket, where a plurality of connection sleeves are arranged on the flexible seat surface, and the connection sleeves are arranged on supporting rods in a sleeving mode.
The present disclosure has the beneficial technical effects that: compared with the prior art, the rear supporting seat, and the left front supporting seat and the right front supporting seat which are located on one side of the rear supporting seat in the present disclosure are matched through the left connecting rod, the right connecting rod and the front connecting rod to form a triangular structure, and supporting is stable. The left end of the front connecting rod is hinged with the left front supporting seat, and the folding locking assembly used for locking the right end of the front connecting rod on the right front supporting seat or unlocking it from the right front supporting seat is arranged on the right front supporting seat. That is, in the present disclosure, when in the locked state, the folding locking assembly may lock and fix one end of the front connecting rod located in the connecting recess of the right front supporting seat, so that the folding chair bracket is in an unfolded state. When in the unlocked state, the front connecting rod may be removed from the connecting recess to achieve folding. It can be learned that according to the folding chair bracket of the present disclosure, during use, the front connecting rod may be locked and fixed through the folding locking assembly to achieve unfolding of the folding chair bracket, and unlocking of the front connecting rod may further be achieved through the folding locking assembly to achieve folding and storage of the folding chair bracket. The structure is simple, and the operation is convenient. The folding locking assembly is located on the right front supporting seat, so that it is not prone to being accidentally touched during use, which avoids safety hazards of sudden folding of the folding chair caused by accidental touch.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic structural diagram of a first embodiment of a folding chair bracket of the present disclosure.
FIG. 2 is a schematic diagram of an unfolding process of the folding chair bracket shown in FIG. 1.
FIG. 3 is a schematic structural diagram of the folding chair bracket shown in FIG. 1 after removing a supporting rod and supporting legs.
FIG. 4 is a partial schematic exploded view of a right front supporting seat in the folding chair bracket shown in FIG. 1.
FIG. 5 is a schematic exploded view of a folding locking assembly in the folding chair bracket shown in FIG. 1.
FIG. 6 is a schematic exploded view of a rear supporting seat in the folding chair bracket shown in FIG. 1.
FIG. 7 is a schematic exploded view of a left front supporting seat in the folding chair bracket shown in FIG. 1.
FIG. 8 is a schematic diagram of the folding chair bracket shown in FIG. 1 in a fully folded state.
FIG. 9 is a schematic structural diagram of a second embodiment of a folding chair bracket of the present disclosure.
FIG. 10 is a schematic diagram of an unfolding process of the folding chair bracket shown in FIG. 9.
FIG. 11 is a schematic structural diagram of the folding chair bracket shown in FIG. 9 after removing a supporting rod and supporting legs.
FIG. 12 is a partial schematic exploded view of a right front supporting seat in the folding chair bracket shown in FIG. 9.
FIG. 13 is a schematic matching diagram of a front connecting rod and a folding locking assembly in the folding chair bracket shown in FIG. 9.
FIG. 14 is a schematic exploded view of a folding locking assembly in the folding chair bracket shown in FIG. 9.
FIG. 15 is a schematic diagram of the folding chair bracket shown in FIG. 9 in a fully folded state.
FIG. 16 is a schematic structural diagram of a third embodiment of a folding chair bracket of the present disclosure.
FIG. 17 is a schematic matching diagram of a front connecting rod and a folding locking assembly in the folding chair bracket shown in FIG. 16.
FIG. 18 is a partial schematic exploded view of a right front supporting seat in the folding chair bracket shown in FIG. 16.
FIG. 19 is a schematic diagram of a process of a front connecting rod rotating into a right front supporting seat in a third embodiment.
FIG. 20 is a schematic structural diagram after a front connecting rod is clamped with a right front supporting seat in a third embodiment.
FIG. 21 is a schematic cross-sectional view after the front connecting rod is clamped with the right front supporting seat shown in FIG. 20.
FIG. 22 is a schematic structural diagram of an unlocking unit in the folding chair bracket shown in FIG. 16.
FIG. 23 is a schematic diagram of the folding chair bracket shown in FIG. 16 in a fully folded state.
FIG. 24 is a schematic structural diagram of a fourth embodiment of a folding chair bracket of the present disclosure.
FIG. 25 is a schematic diagram of an unfolding process of the folding chair bracket shown in FIG. 24.
FIG. 26 is a partial schematic exploded view of a right front supporting seat in the folding chair bracket shown in FIG. 24.
FIG. 27 is a schematic cross-sectional view of matching of a folding locking assembly with a front connecting rod in the folding chair bracket shown in FIG. 24.
FIG. 28 is a schematic exploded view of the folding locking assembly in the folding chair bracket shown in FIG. 24
FIG. 29 is a schematic structural diagram of a specific embodiment of a folding chair of the present disclosure.
DETAILED DESCRIPTION
In order to make those of ordinary skill in the art understand objectives, technical solutions and advantages of the present disclosure more clearly, the present disclosure is further described in conjunction with accompanying drawings and embodiments below.
Referring to FIG. 1 to FIG. 8, FIG. 1 to FIG. 8 show a first embodiment of a folding chair bracket 1 of the present disclosure. In the embodiment shown in the figures, the folding chair bracket 1 includes a rear supporting seat 12, a left connecting rod 15, a right connecting rod 16, a left front supporting seat 13, a right front supporting seat 14, a front connecting rod 17, a plurality of supporting legs 11, a plurality of supporting rods 10 and a folding locking assembly 18. Rear ends of the left connecting rod 15 and the right connecting rod 16 are hinged with the rear supporting seat 12 to be capable of rotating in a horizontal direction, the left front supporting seat 13 and the right front supporting seat 14 are connected to front ends of the left connecting rod 15 and the right connecting rod 16 respectively, one side of the right front supporting seat 14 opposite to the left front supporting seat 13 is provided with a connecting recess 140 for accommodating the front connecting rod 17, a left end of the front connecting rod 17 is hinged to an inner side of the left front supporting seat 13 to be capable of rotating in the horizontal direction, and the folding locking assembly 18 is arranged on the right front supporting seat 14 and has a locked state and an unlocked state. In the locked state, the folding locking assembly 18 may lock and fix a right end of the front connecting rod 17 into the connecting recess 140 of the right front supporting seat 14. In the unlocked state, the front connecting rod 17 may be removed from the connecting recess 140. The supporting legs 11 are detachably inserted below the rear supporting seat 12, the left front supporting seat 13 and the right front supporting seat 14, and the supporting rods 10 are detachably inserted above the rear supporting seat 12, the left front supporting seat 13 and the right front supporting seat 14. Based on the above design, the rear supporting seat 12, and the left front supporting seat 13 and the right front supporting seat 14 which are located on one side of the rear supporting seat 12 are connected through the left connecting rod 15, the right connecting rod 16 and the front connecting rod 17 to form a triangular structure, and supporting is stable. The left end of the front connecting rod 17 is hinged with the left front supporting seat 13, the right end of the front connecting rod 17 may be locked into the connecting recess 140 of the right front supporting seat 14 through the folding locking assembly 18 to form the triangular structure for stabilizing supporting, and may also be unlocked from the right front supporting seat 14 and removed from the connecting recess 140 to move towards a direction close to the rear supporting seat 12, and at the same time, the left connecting rod 15 and the right connecting rod 16 move towards each other to achieve folding and storage of the folding chair bracket 1.
In some embodiments, the front connecting rod 17 is provided with a penetrating hole 170a, the folding locking assembly 18 includes a locking piece 180a and a pushing piece 181a, the locking piece 180a is located in the connecting recess 140, the pushing piece 181a is located on one side of the right front supporting seat 14, and one end of the pushing piece 181a penetrates through the right front supporting seat 14 to be connected with the locking piece 180a and may push the locking piece 180a to move up and down. When the folding chair bracket 1 needs to be unfolded, the pushing piece 181a pushes the locking piece 180a to move downwards, so that the locking piece 180a is clamped into the penetrating hole 170a to be in the locked state, and then the front connecting rod 17 is locked and fixed into the connecting recess 140 of the right front supporting seat 14. When the folding chair bracket 1 needs to be folded and stored, the pushing piece 181a pushes the locking piece 180a to move upwards, so that the locking piece 180a is removed from the penetrating hole 170a to be in the unlocked state, and the front connecting rod 17 may be removed from the connecting recess 140.
Specifically, in this embodiment, two protruding rods 1800a which protrude outwards are formed on two sides of the locking piece 180a respectively, the pushing piece 181a includes a key 1811a and two push rods 1812a correspondingly connected to two sides of the key 1811a respectively, the push rods 1812a include abutting rods 8121a located below the protruding rods 1800a, connecting rods 8123a connected with the key 1811a, and transition rods 8124a connected between the abutting rods 8121a and the connecting rods 8123a, and top surfaces of the transition rods 8124a are inclined surfaces, such that the locking piece 180a moves upwards when the key 1811a is pushed towards a direction close to the locking piece 180a. Based on the above design, the locking piece 180a is located between the two push rods 1812a, when the folding chair bracket 1 needs to be folded and stored, the key 1811a may be pushed, so that the key 1811a moves towards the direction close to the locking piece 180a, the two push rods 1812a move towards the direction close to the locking piece 180a, and the protruding rods 1800a move upwards along the transition rods 8124a to make the locking piece 180a move upwards to be removed from the penetrating hole 170a.
In some embodiments, a top of the right front supporting seat 14 is inwardly recessed to form an accommodating cavity 141a, the folding locking assembly 18 further includes a guiding piece 183a, the guiding piece 183a includes a cover plate 1831a and a hollow guiding column 1832a formed by extending downwards from a middle of the cover plate 1831a, the cover plate 1831a is arranged at a top of the accommodating cavity 141a in a covering mode, the guiding column 1832a penetrates through the accommodating cavity 141a to be located in the connecting recess 140, a side wall of the guiding column 1832a is provided with a sliding groove 8321a, and the protruding rods 1800a are located in the sliding groove 8321a and may move in the sliding groove 8321a, to drive the locking piece 180a to move up and down in the guiding column 1832a. Based on the above design, a movement path of the locking piece 180a may be limited through the guiding column 1832a.
Continuing to refer to FIG. 4 and FIG. 5, in some embodiments, a first protrusion part is formed on a cavity wall of the accommodating cavity 141a, the guiding piece 183a further includes side plates 1833 which are formed on two sides of the cover plate 1831a, and a second protrusion part 8331a matched with the first protrusion part is formed on each side plate 1833, to fix the guiding piece 183a onto the right front supporting seat 14.
Further, in this embodiment, the folding locking assembly 18 further includes an elastic piece 182a, the elastic piece 182a is located in the hollow guiding column 1832a, and two ends of the elastic piece 182a are connected with the locking piece 180a and the cover plate 1831a respectively, so that the elastic piece 182a compresses when the pushing piece 181a pushes the locking piece 180a to move upwards and enables the locking piece 180a to be quickly clamped into the penetrating hole 170a under an elastic action. Based on this design, when the pushing piece 181a pushes the locking piece 180a to be removed from the penetrating hole 170a to be unlocked, the elastic piece 182a compresses, and when the front connecting rod 17 needs to be locked, the elastic piece 182a may be quickly clamped into the penetrating hole 170a under the elastic action.
Continuing to refer to FIG. 1, FIG. 3 and FIG. 6, two sides of the front end of the rear supporting seat 12 are inwardly recessed respectively to form a first rear cavity 120 and a second rear cavity 121 which are symmetrical left and right, and the left connecting rod 15 and the right connecting rod 16 are located in the first rear cavity 120 and the second rear cavity 121 respectively, and are hinged with the rear supporting seat 12 through a first assembly shaft 1201 and a second assembly shaft 1211 respectively. That is, the first assembly shaft 1201 penetrates through the top of the rear supporting seat 12 to enter the first rear cavity 120, and penetrates through the left connecting rod 15 and a bottom of the rear supporting seat 12, so that the left connecting rod 15 may rotate with the first assembly shaft 1201 as an axis within a range limited by the first rear cavity 120. The second assembly shaft 1211 penetrates through the top of the rear supporting seat 12 to enter the second rear cavity 121, and penetrates through the right connecting rod 16 and the bottom of the rear supporting seat 12, so that the right connecting rod 16 may rotate with the second assembly shaft 1211 as an axis within a range limited by the second rear cavity 121. Therefore, the left connecting rod 15 and the right connecting rod 16 are hinged with the rear supporting seat 12.
Continuing to refer to FIG. 1 and FIG. 7, in this embodiment, the left front supporting seat 13 is provided with a left cavity 130, upper and lower sides of the left cavity 130 are each provided with a third assembly hole 1300 which is oppositely through, one end of the front connecting rod 17 is located in the left cavity 130, and a third assembly shaft 1301 sequentially penetrates through the third assembly hole 1300 located in the upper part of the left cavity 130, the front connecting rod 17 and the third assembly hole 1300 located in the lower part of the left cavity 130, so that the front connecting rod 17 is hinged onto the left front supporting seat 13.
Preferably, in this embodiment, two sides of the rear supporting seat 12 are provided with two first upper plug barrels 100 with inclined upwards openings and two first lower plug barrels 110 with inclined downwards openings respectively, outer sides of the left front supporting seat 13 and the right front supporting seat 14 are provided with second upper plug barrels 101 with inclined upwards openings and second lower plug barrels 111 with inclined downwards openings, the supporting rods 10 are detachably inserted into each first upper plug barrel 100 and each second upper plug barrel 101 respectively, so that the supporting rods 10 are inclined upwards and outwards, and the supporting legs 11 which are inclined downwards are detachably inserted into each first lower plug barrel 110 and each second lower plug barrel 111 respectively, so that the supporting legs 11 are inclined downwards and outwards. Anti-skidding sleeves 19 are arranged on the supporting legs 11 in a sleeving mode, to enhance friction with the ground when the folding chair bracket 1 is in an unfolded state, which is safe and anti-skidding. It may be understood that the supporting legs 11 and the supporting rods 10 may be made into telescopic rods according to the required length of use, and may also be arranged as rods with the fixed lengths.
With reference to FIG. 1, FIG. 2 and FIG. 8, a use process of the folding chair bracket 1 in this embodiment is specifically described. During unfolding, firstly, the left connecting rod 15 is rotated leftwards to an extreme position, the right connecting rod 16 is rotated rightwards to an extreme position, and at the moment, the folding chair bracket 1 is as shown in FIG. 2. Then, the front connecting rod 17 is pulled to rotate around the third assembly shaft 1301, at the same time, the key 1811a is pushed, so that the locking piece 180a moves upwards, after the right end of the front connecting rod 17 moves into the connecting recess 140 of the right front supporting seat 14, the key 1811a is released, the locking piece 180a moves downwards under the elastic action of the elastic piece 182a, to be quickly clamped into the penetrating hole 170a of the front connecting rod 17, so that the front connecting rod 17 is locked into the connecting recess 140, the folding chair bracket 1 is as shown in FIG. 1, and unfolding and fixing are completed. When the folding chair bracket 1 is folded and stored, firstly, the key 1811a arranged on the right front supporting seat 14 is pushed, so that the push rods 1812a connected with the key 1811a move towards the direction close to the locking piece 180a, the protruding rods 1800a of the locking piece 180a move from the abutting rods 8121a to the transition rods 8124a, because the top surfaces of the transition rods 8124a are inclined surfaces which incline upwards, and the protruding rods 1800a move along the top surfaces of the transition rods 8124a, the locking piece 180a moves upwards and is removed from the penetrating hole 170a, then the front connecting rod 17 is operated to rotate towards a direction close to the rear supporting seat 12, to be separated from the right front supporting seat 14 and move to a position below the rear supporting seat 12, then the left connecting rod 15 is rotated rightwards to an extreme position, the right connecting rod 16 is rotated leftwards to an extreme position, as shown in FIG. 8, and storage and folding of the folding chair bracket 1 are completed. Further, the supporting rods 10 and the supporting legs 11 may further be detached, so that the folding chair bracket 1 is more compact during folding and storage, and is easy to carry.
Referring to FIG. 9 to FIG. 15, FIG. 9 to FIG. 15 show a second embodiment of a folding chair bracket 1 of the present disclosure. The difference between this embodiment and the first embodiment lies in a specific structure of the folding locking assembly 18 and its connection relationship with the front connecting rod 17 and the right front supporting seat 14, and other structures are the same or similar. In this embodiment, the folding locking assembly 18 includes a sleeve rod 180b and a lock piece 181b, a right end of the front connecting rod 17 is connected with the sleeve rod 180b, the lock piece 181b includes a push-pull piece and a fixing piece 1811b, and the fixing piece 1811b is fixed into the connecting recess 140. In this embodiment, a clamping groove 1401b is formed in a lower wall of the connecting recess 140, the fixing piece 1811b is fixed into the clamping groove 1401b, the fixing piece 1811b is inwards provided, from an end thereof, with a penetrating sliding groove 8110b allowing the sleeve rod 180b to pass through, a hook claw 8103b is formed on the push-pull piece, and the push-pull piece is located on one side of the fixing piece 1811b. When in a locked state, the push-pull piece moves upwards until the hook claw 8103b is hooked on the sleeve rod 180b, to be matched with the fixing piece 1811b to lock and fix the sleeve rod 180b into the penetrating sliding groove 8110b. When in an unlocked state, the push-pull piece moves downwards, and the sleeve rod 180b is removed from the hook claw 8103b and the penetrating sliding groove 8110b. It may be understood that one end of the penetrating sliding groove 8110b is open. Preferably, in this embodiment, an opening end 8111b of the penetrating sliding groove 8110b is in a trumpet shape, so that the sleeve rod 180b is convenient to move in and out. Based on the above design, the folding chair bracket 1 in this embodiment is also stable in supporting and may be quickly unfolded and folded and stored, which is convenient to operate. That is, when the folding chair bracket 1 needs to be unfolded, the front connecting rod 17 is moved to make the right end of the front connecting rod 17 move towards the direction close to the right front supporting seat 14 until the sleeve rod 180b connected with the right end of the front connecting rod 17 moves into the connecting recess 140 of the right front supporting seat 14, and enter the other end part of the penetrating sliding groove 8110b from the opening end 8111b of the penetrating sliding groove 8110b. At the moment, the push-pull piece moves upwards, so that the hook claw 8103b is hooked on the sleeve rod 180b to be matched with the fixing piece 1811b to lock and fix the sleeve rod 180b into the penetrating sliding groove 8110b, that is, the sleeve rod 180b cannot move towards a direction away from the right front supporting seat 14 under the action of the hook claw 8103b, and unfolding and stabilization of the folding chair bracket 1 are achieved. When the folding chair bracket 1 needs to be folded, the push-pull piece moves downwards, so that the sleeve rod 180b is removed from the hook claw 8103b, and then the sleeve rod 180b may be removed from the opening end 8111b of the penetrating sliding groove 8110b, to be removed from the connecting recess 140 of the right front supporting seat 14.
Continuing to refer to FIG. 9, and FIG. 12 to FIG. 14, in some embodiments, a top of the right front supporting seat 14 is provided with an accommodating cavity 141b, the push-pull piece includes a push button 8101b located on the accommodating cavity 141b and a push-pull plate 8102b located in the connecting recess 140, the hook claw 8103b is formed at one end part of the push-pull plate 8102b and forms a hook groove 8104b with the push-pull plate 8102b, and the other end part of the push-pull plate 8102b penetrates through the right front supporting seat 14 to be connected with the push button 8101b, to move up and down under the action of the push button 8101b. Preferably, a position of a lower wall of the connecting recess 140 corresponding to the push-pull plate 8102b is provided with a notch 1400b. Based on the above design, when the push-pull piece moves upwards, and the hook claw 8103b is hooked on the sleeve rod 180b, the sleeve rod 180b is located in the hook groove 8104b. When the push-pull piece moves downwards, a bottom of the push-pull plate 8102b may penetrate through the notch 1400b, to avoid affecting the removal of the sleeve rod 180b.
Specifically, in this embodiment, the push-pull plate 8102b includes a vertical plate 8106b and a transverse plate 8105b formed by bending outwards from one end of the vertical plate 8106b, the other end of the vertical plate 8106b is connected with the push button 8101b, the notch 1400b is formed in a position of the lower wall of the connecting recess 140 corresponding to the transverse plate 8105b, the hook claw 8103b is formed at an outer side of an upper end of the transverse plate 8105b, and the hook claw 8103b forms the hook groove 8104b with the transverse plate 8105b and the vertical plate 8106b.
In some embodiments, the sleeve rod 180b includes a connecting sleeve 1800b and a locking rod 1801b formed by extending outwards from a middle of one end of the connecting sleeve 1800b and used for being matched with the lock piece 181b, the connecting sleeve 1800b is sleeved with the front connecting rod 17, and a penetrating shaft 1803b penetrates through the front connecting rod 17 and the connecting sleeve 1800b to fix the connecting sleeve 1800b into the front connecting rod 17. Preferably, the sleeve rod 180b further includes a clamp cap 1802b formed at a tail end of the locking rod 1801b, the locking rod 1801b is of a cylindrical structure, the clamp cap 1802b is of a spherical structure, and a diameter of the clamp cap 1802b is greater than a diameter of the locking rod 1801b. Based on this design, the clamp cap 1802b may prevent the locking rod 1801b from being separated from the penetrating sliding groove 8110b and the hook groove 8104b.
Further, in this embodiment, the push-pull piece further includes an elastic piece 182b, and the elastic piece 182b is connected with the push-pull plate 8102b and an inner wall of the push button 8101b, to compress when the push button 8101b pushes the push-pull plate 8102b to move downwards, and enable the hook claw 8103b on the push-pull plate 8102b to be quickly hooked on the sleeve rod 180b under an elastic action. Specifically, in this embodiment, the elastic piece 182b is arranged at one end of the vertical plate 8106b connected with the push button 8101b in a sleeving mode, and moves downwards following the vertical plate 8106b when the push button 8101b pushes the vertical plate 8106b to move downwards, and the elastic piece 182b compresses when a lower end abuts against a top of the fixing piece 1811b. Based on the design of the elastic piece 182b, when the push button 8101b pushes the push-pull plate 8102b to move downwards to be unlocked under an external force action, the elastic piece 182b compresses. When the front connecting rod 17 needs to be locked, the hook claw 8103b may be quickly hooked on the sleeve rod 180b connected with the front connecting rod 17 under the elastic action of the elastic piece 182b.
With reference to FIG. 9, FIG. 10 and FIG. 15, a use process of the folding chair bracket 1 in this embodiment is specifically described. During unfolding, firstly, the left connecting rod 15 is rotated leftwards to an extreme position, the right connecting rod 16 is rotated rightwards to an extreme position, and at the moment, the folding chair bracket 1 is as shown in FIG. 10. Then, the front connecting rod 17 is pulled to rotate around the third assembly shaft 1301, at the same time, the push button 8101b is pushed, so that the push-pull plate 8102b in the lock piece 181b moves downwards, after the sleeve rod 180b connected with the front connecting rod 17 moves into the connecting recess 140 of the right front supporting seat 14, and its locking rod 1801b enters the other end part of the penetrating sliding groove 8110b from the opening end 8111b of the penetrating sliding groove 8110b, then the push button 8101b is released, the push-pull plate 8102b connected with the push button 8101b moves upwards under the elastic action of the elastic piece 182b, so that the hook claw 8103b on the push-pull plate 8102b is quickly hooked on the sleeve rod 180b, to lock the front connecting rod 17 in the connecting recess 140, the folding chair bracket 1 is as shown in FIG. 9, and unfolding and fixing are completed. When the folding chair bracket 1 is folded and stored, firstly, the push button 8101b arranged on the right front supporting seat 14 is pushed, so that the push-pull plate 8102b connected with the push button 8101b moves towards a direction close to the notch 1400b in the right front supporting seat 14, and the locking rod 1801b of the sleeve rod 180b is separated from the hook groove 8104b, the locking rod 1801b may be removed from the opening end 8111b of the penetrating sliding groove 8110b, to be removed from the connecting recess 140 of the right front supporting seat 14, then the front connecting rod 17 is operated to rotate towards a direction close to the rear supporting seat 12, to be separated from the right front supporting seat 14 and move to a position below the rear supporting seat 12, then the left connecting rod 15 is rotated rightwards to an extreme position, the right connecting rod 16 is rotated leftwards to an extreme position, as shown in FIG. 15, and storage and folding of the folding chair bracket 1 are completed. Further, the supporting rods 10 and the supporting legs 11 may further be detached, so that the folding chair bracket 1 is more compact during folding and storage, and is easy to carry.
Referring to FIG. 16 to FIG. 23, FIG. 16 to FIG. 23 show a third embodiment of a folding chair bracket 1 of the present disclosure. The difference between this embodiment and the first embodiment lies in a specific structure of the folding locking assembly 18 and its connection relationship with the front connecting rod 17 and the right front supporting seat 14, and other structures are the same or similar. In this embodiment, a first positioning hole 1401c is formed in a top surface of the connecting recess 140, a second positioning hole 1402c is formed in a bottom surface of the connecting recess 140, the folding locking assembly 18 includes an elastic piece 170c arranged in a right end of the front connecting rod 17, the elastic piece 170c is provided with a first positioning column 1701c which protrudes above the front connecting rod 17 and a second positioning column 1702c which protrudes below the front connecting rod 17, the first positioning column 1701c and the second positioning column 1702c may be retracted into the front connecting rod 17 under external force action, and when the right end of the front connecting rod 17 is placed into the connecting recess 140, the first positioning column 1701c and the second positioning column 1702c are correspondingly inserted into the first positioning hole 1401c and the second positioning hole 1402c, to achieve the connection of the front connecting rod 17 and the right front supporting seat 14. Based on the above design, during use, the first positioning column 1701c and the second positioning column 1702c may be correspondingly inserted into the first positioning hole 1401c and the second positioning hole 1402c respective by using an elastic force, to lock and fix the front connecting rod 17 to achieve unfolding of the folding chair bracket 1. The first positioning column 1701c and the second positioning column 1702c may further be extruded simultaneously from upper and lower sides for unlocking, to achieve folding and storage of the folding chair bracket 1, which is simple in structure and easy to operate.
Continuing to refer to FIG. 17 and FIG. 21, in this embodiment, the elastic piece 170c is in a V shape, including a first spring sheet 1703c inclined upwards and a second spring sheet 1704c inclined downwards, the first positioning column 1701c is vertically formed at a tail end of the first spring sheet 1703c upwards, the second positioning column 1702c is vertically formed at a tail end of the second spring sheet 1704c downwards, a clamp hole 171c which is through up and down is formed in the right end of the front connecting rod 17, and the clamp hole 171c is adaptive to the first positioning column 1701c and the second positioning column 1702c in shape. When the elastic piece 170c is placed into the front connecting rod 17, the first positioning column 1701c penetrates through the clamp hole 171c to protrude above the front connecting rod 17, the second positioning column 1702c penetrates through the clamp hole 171c to protrude below the front connecting rod 17, and under the external force action, the first positioning column 1701c and the second positioning column 1702c may be extruded to be retracted into the front connecting rod 17.
Continuing to refer to FIG. 18 to FIG. 21, the connecting recess 140 on an inner side of the right front supporting seat 14 is provided with the first positioning hole 1401c in a top surface and the second positioning hole 1402c in a bottom surface. In order to guide and transition the rotation and assembly of the front connecting rod 17, in this embodiment, a concave first guiding surface 1403c is formed on the top surface of the connecting recess 140 corresponding to the first positioning hole 1401c, and a concave second guiding surface 1404c is formed on the bottom surface of the connecting recess 140 corresponding to the second positioning hole 1402c. Taking the center of the first positioning hole 1401c and the second positioning hole 1402c as the inside, and a position away from the first positioning hole 1401c and the second positioning hole 1402c as the outside, the first guiding surface 1403c gradually retracts and descends obliquely from the outside to the inside, and the second guiding surface 1404c gradually retracts and ascends obliquely from the outside to the inside.
As shown in the figures, when the right end of the front connecting rod 17 is rotated to the connecting recess 140, the first positioning column 1701c abuts against the first guiding surface 1403c, and the second positioning column 1702c abuts against the second guiding surface 1404c. As the front connecting rod 17 further rotates, the first guiding surface 1403c descends obliquely to gradually extrude the first positioning column 1701c downwards, and the second guiding surface 1404c ascends obliquely to gradually extrude the second positioning column 1702c upwards until the first positioning column 1701c and the second positioning column 1702c are correspondingly inserted into the first positioning hole 1401c and the second positioning hole 1402c. The rotation and assembly of the front connecting rod 17 are guided and transitioned by arranging the first guiding surface 1403c and the second guiding surface 1404c, without manual extruding of the first positioning column 1701c and the second positioning column 1702c, which reduces an extrusion force on the first positioning column 1701c and the second positioning column 1702c, and is convenient and labor-saving.
As shown in FIG. 18, FIG. 21 and FIG. 22, the folding locking assembly 18 further includes unlocking units 1800c, the first positioning hole 1401c and the second positioning hole 1402c are each provided with one unlocking unit 1800c, and the unlocking units 1800c may extrude the first positioning column 1701c located in the first positioning hole 1401c and the second positioning column 1702c located in the second positioning hole 1402c in a case of external force application, such that the first positioning column 1701c is separated from the first positioning hole 1401c, and the second positioning column 1702c is separated from the second positioning hole 1402c.
As shown in the figures, each unlocking unit 1800c includes a cylindrical limiting piece 182c, a pin 181c and a key cap 180c, each limiting piece 182c is arranged corresponding to the insides of the first positioning hole 1401c and the second positioning hole 1402c and is internally provided with a first cavity 1820c and a second cavity 1821c with an inner diameter smaller than an inner diameter of the first cavity 1820c, the pin 181c penetrates through the limiting piece 182c, and a limiting part 1810c with an outer diameter smaller than the inner diameter of the first cavity 1820c but greater than the inner diameter of the second cavity 1821c is formed at a tail end of the pin 181c, so that the limiting part 1810c may move within the first cavity 1820c but cannot move within the second cavity 1821c. Preferably, exteriors of the limiting pieces 182c may be made into shapes adaptive to interiors of the first positioning hole 1401c and the second positioning hole 1402c, such as a toothed gear shape, and the key caps 180c are connected to start ends of the pins 181c.
Through the matching of the limiting pieces 182c and the pins 181c, the pins 181c may move up and down within a certain range along the axis of the first positioning hole 1401c and the second positioning hole 1402c. When the first positioning column 1701c and the second positioning column 1702c are inserted into the first positioning hole 1401c and the second positioning hole 1402c, the first positioning column 1701c and the second positioning column 1702c push the pins 181c located in the first positioning hole 1401c and the second positioning hole 1402c outwards, so that the pins 181c move towards an insertion direction. When the folding chair 1 needs to be unlocked, the key caps 180c on the upper and lower sides are pressed to drive the two pins 181c to extrude the first positioning column 1701c and the second positioning column 1702c inwards, so that the first positioning column 1701c and the second positioning column 1702c are separated from the first positioning hole 1401c and the second positioning hole 1402c to complete unlocking.
Based on the above design, when the right end of the front connecting rod 17 is rotated into the connecting recess 140, the first positioning column 1701c and the second positioning column 1702c at the right end of the front connecting rod 17 are correspondingly rotated to the first positioning hole 1401c and the second positioning hole 1402c, and the first positioning column 1701c and the second positioning column 1702c are popped up and inserted into the first positioning hole 1401c and the second positioning hole 1402c to achieve self-locking. At the moment, the front connecting rod 17 is fixed to the right front supporting seat 14, and a folding chair is unfolded and fixed. When the unlocking units 1800c on the upper and lower sides are pressed, the first positioning column 1701c and the second positioning column 1702c are extruded to be separated from the first positioning hole 1401c and the second positioning hole 1402c to achieve unlocking, so that the front connecting rod 17 may rotate around the left front supporting seat 13 horizontally, to achieve folding of the folding chair.
With reference to FIG. 16 and FIG. 23, a use process of the folding chair bracket 1 in this embodiment is specifically described. When the folding chair bracket 1 is unfolded, firstly, the left connecting rod 15 is rotated leftwards to an extreme position, the right connecting rod 16 is rotated rightwards to an extreme position, and at the moment, the folding chair bracket 1 is as shown in FIG. 16. Then, the front connecting rod 17 is pulled to rotate around the third assembly shaft 1301 to rotate to a position in front of the connecting recess 140 of the right front supporting seat 14, at the moment, the first positioning column 1701c and the second positioning column 1702c have not been compressed, and the front connecting rod 17 is further rotated, so that the first guiding surface 1403c gradually extrudes the first positioning column 1701c downwards, and the second guiding surface 1404c gradually extrudes the second positioning column 1702c upwards until the first positioning column 1701c and the second positioning column 1702c are compressed into the front connecting rod 17. Finally, the front connecting rod 17 continues to be pulled until the first positioning column 1701c and the second positioning column 1702c are automatically popped up under the elastic action and inserted into the first positioning hole 1401c and the second positioning hole 1402c, the pins 181c in the first positioning hole 1401c and the second positioning hole 1402c are extruded by the first positioning column 1701c and the second positioning column 1702c to be pushed out, to drive the key caps 180c to be pushed out, the front connecting rod 17 and the right front supporting seat 14 are locked, and the folding chair bracket 1 is fully unfolded. When the folding chair bracket 1 is stored, firstly, the upper and lower key caps 180c of the right front supporting seat 14 are pressed, at the moment, the pins 181c are pushed to move into the first positioning hole 1401c and the second positioning hole 1402c by pressing the key caps 180c, and under the extrusion of the pins 181c, the first positioning column 1701c and the second positioning column 1702c are correspondingly retracted into the front connecting rod 17 until they are separated from the first positioning hole 1401c and the second positioning hole 1402c. Then, the front connecting rod 17 is operated to rotate to the rear supporting seat 12, the right end of the front connecting rod 17 is rotated to the rear supporting seat 12, then the left connecting rod 15 is rotated rightwards to an extreme position, and the right connecting rod 16 is rotated leftwards to an extreme position, to complete the storage and folding of the folding chair bracket 1. Finally, the supporting rods 10 and the supporting legs 11 may further be detached.
Referring to FIG. 24 to FIG. 28, FIG. 24 to FIG. 28 show a fourth embodiment of a folding chair bracket 1 of the present disclosure. The difference between this embodiment and the first embodiment lies in specific structures of the locking piece and the pushing piece in the folding locking assembly 18 and its connection relationship with the right front supporting seat 14, and other structures are the same or similar. In this embodiment, a locking piece 180d includes a fixing cylinder 1800d and a fixing pin 1801d located in the fixing cylinder 1800d, the fixing cylinder 1800d is fixed to a top of the right front supporting seat 14, and one side of the fixing cylinder 1800d is provided with a groove body 8001d. A pushing piece 181d includes a key 1811d and a lifting piece 1812d, the lifting piece 1812d includes a pushing rod 8121d and a lift rod 8122d formed by bending downwards from an upper end part of one side of the pushing rod 8121d, an upper end surface of the other side of the pushing rod 8121d is an inclined surface, the lift rod 8122d penetrates through the fixing pin 1801d and is located in the groove body 8001d, the pushing rod 8121d is located outside the fixing cylinder 1800d, the key 1811d is located above the fixing pin 1801d, an elastic piece 182d is located in the key 1811d, with one end connected with the key 1811d and the other end connected with the fixing pin 1801d, a position in the key 1811d corresponding to the pushing rod 8121d is provided with a push plate 8111d, and a lower end part of the push plate 8111d is correspondingly arranged as an inclined surface, thereby being matched with the pushing rod 8121d when moving downwards under an external force action to enable the lift rod 8122d to move upwards in the groove body 8001d, to drive the fixing pin 1801d to move upwards. Based on the above design, through the matching of the inclined surface of the push plate 8111d in the key 1811d and the inclined surface of the pushing rod 8121d, in a process of downward movement of the key 1811d, the pushing rod 8121d may move towards a direction close to the fixing pin 1801d, because the fixing pin 1801d is located in the fixing cylinder 1800d, the lift rod 8122d is fixed onto the fixing pin 1801d in a penetrating mode, and the lift rod 8122d drives the fixing pin 1801d to move upwards, so that the fixing pin 1801d is removed from a penetrating hole.
Continuing to refer to FIG. 26 to FIG. 28, further, in this embodiment, a protruding ring 8011d which protrudes outwards is formed on an upper part of the fixing pin 1801d, and the protruding ring 8011d is located above the fixing cylinder 1800d to limit a distance of downward movement of the fixing pin 1801d.
With reference to FIG. 24 and FIG. 25, a use process of the folding chair bracket 1 in this embodiment is specifically described. During unfolding, firstly, the left connecting rod 15 is rotated leftwards to an extreme position, the right connecting rod 16 is rotated rightwards to an extreme position, and at the moment, the folding chair bracket 1 is as shown in FIG. 10. Then, the front connecting rod 17 is pulled to rotate around the third assembly shaft 1301, at the same time, the key 1811d is pushed, so that the fixing pin 1801d in the locking piece 180d moves upwards, after one end which is not connected with the third assembly shaft 1301 moves into the connecting recess 140 of the right front supporting seat 14, the key 1811d is released, the fixing pin 1801d in the locking piece 180d moves downwards under the elastic action of the elastic piece 182d, to be quickly clamped into the penetrating hole 170a of the front connecting rod 17, so that the front connecting rod 17 is locked into the connecting recess 140, the folding chair bracket 1 is as shown in FIG. 9, and unfolding and fixing are completed. When the folding chair bracket 1 is folded and stored, firstly, the key 1811d arranged on the upper part of the right front supporting seat 14 is pushed, through the matching of the inclined surface of the push plate 8111d in the key 1811d and the inclined surface of the pushing rod 8121d, in the process of downward movement of the key 1811d, the pushing rod 8121d moves towards the direction close to the fixing pin 1801d, while the fixing pin 1801d is located in the fixing cylinder 1800d, so that the lift rod 8122d which is fixed to the fixing pin 1801d in a penetrating mode may move upwards in the groove body 8001d, to drive the fixing pin 1801d to move upwards. Therefore, the fixing pin 1801d is removed from the penetrating hole 170d. Then, the front connecting rod 17 is operated to rotate towards a direction close to the rear supporting seat 12, to be separated from the right front supporting seat 14 and move to a position below the rear supporting seat 12, then the left connecting rod 15 is rotated rightwards to an extreme position, the right connecting rod 16 is rotated leftwards to an extreme position, and storage and folding of the folding chair bracket 1 are completed. Further, the supporting rods 10 and the supporting legs 11 may further be detached, so that the folding chair bracket 1 is more compact during folding and storage, and is easy to carry.
Referring to FIG. 29, FIG. 29 is a schematic structural diagram of a specific embodiment of a folding chair of the present disclosure. With reference to FIG. 1, in the embodiment shown in the figure, the folding chair includes a folding chair bracket 1 described in the above first embodiment and a flexible seat surface 2 connected with an upper part of the folding chair bracket 1, connection sleeves 3 are connected with outer sides of four corners of the flexible seat surface 2 respectively, and the connection sleeves 3 are arranged on supporting rods 10 in a sleeving mode. The flexible seat surface 2 is made of a flexible and foldable material, and a concave space for a user to sit on is formed at a front side of the flexible seat surface 2. When the folding chair bracket 1 is unfolded, the flexible seat surface 2 is also fully unfolded under the action of the supporting rods 10, and because a rear supporting seat 12, a left front supporting seat 13 and a right front supporting seat 14 are connected through a left connecting rod 15, a right connecting rod 16 and a front connecting rod 17 to form a triangular structure, which is relatively stable when supported by supporting legs 11 after unfolding, when the folding chair bracket 1 is folded, the flexible seat surface 2 may also be folded. The folding chair of the present disclosure is simple in structure and convenient to unfold and fold, a folding locking assembly 18 for locking and unlocking the front connecting rod 17 is located on the right front supporting seat 14, and it is not prone to being accidentally touched during use, which avoids safety hazards of sudden folding of the folding chair caused by a situation that when people sit, a key is accidentally touched due to too large weight.
It may be understood that in some other embodiments, the folding chair may include a folding chair bracket 1 described in the above second embodiment/third embodiment/fourth embodiment and a flexible seat surface 2 connected with an upper part of the folding chair bracket 1, and a connection relationship between the flexible seat surface 2 and the folding chair bracket 1 in this embodiment is the same as that of the above embodiment, which will not be repeated here.
The above is only preferred embodiments of the present disclosure and does not limit the present disclosure in any form. Those skilled in the art may make various equivalent changes and improvements based on the above embodiments. Any equivalent variations or modifications made within the scope of the claims shall fall within the scope of protection of the present disclosure.
Patent Application
20250151910
