Patent Application
20250187645
The application relates to an intermittent movement device, a wheel locking structure with the intermittent movement device, and a stroller.
According to the prior art, a locking mechanism of wheels of a stroller includes wheels, a wheel axle rotatably connected to the wheels, and a plurality of locking slots distributed annularly on each wheel, and a parking pedal connected to a stroller frame is disposed on one side of each wheel. When the pedal is stepped down, a parking block connected to the pedal is inserted into one of the locking slots, such that the wheels cannot rotate. When it is required to unlock, the user needs to hook the parking pedal up by instep to make the parking block be separated from the locking slot. Such a locking mechanism needs two actions, moving up and moving down, during operation, which are inconvenient to perform with the foot, and prone to damage and stain the shoe, especially the user's exposed instep if he wears a shoe exposing his instep.
For this reason, it is necessary to propose a new wheel locking structure, which allows reliable locking and unlocking of the wheels by stepping the pedal in one direction.
In order to make it convenient for the baby caregiver to shop or carry articles needed for going out, some strollers will be provided with storage crates for placing articles. However, the existing storage crates on the strollers are often inconvenient to use and provide poor user experience due to limitations such as the connection mode or space cooperative with the stroller frame.
An intermittent movement device according to the application includes: a housing; a driving member, capable of rotating around a first axis; a plurality of engagement teeth, circumferentially distributed on the driving member based on the first axis; an operating member, capable of performing reciprocating movement between an initial position and an acting position with respect to the housing around the first axis; wherein when the operating member moves from the acting position to the initial position, the operating member passes over one of the engagement teeth to return from the acting position to the initial position, and the driving member does not rotate with the operating member.
In an embodiment, the plurality of engagement teeth are capable of rotating between respective engagement position and avoidance position with respect to the driving member; when the operating member moves from the initial position to the acting position, the operating member pushes one of engagement teeth into the engagement position, and brings the driving member to rotate along a rotating direction via one of the engagement teeth; and when the operating member moves from the acting position to the initial position, the operating member passes over a next one of engagement teeth behind the one of the engagement teeth in the rotating direction to return from the acting position to the initial position, and the driving member does not rotate with the operating member.
In an embodiment, each of the engagement teeth is capable of rotating between the engagement position and the avoidance position with respect to the driving member around a respective second axis, and the second axis is parallel to the first axis; or each of the engagement teeth is capable of linearly moving between the engagement position and the avoidance position along a direction perpendicular to the first axis.
In an embodiment, each of the engagement teeth includes a forward face and a backward face, and the forward face and the backward face form an included angle with each other; the operating member includes a pushing portion to exert a pushing action on one of the engagement teeth; when the operating member moves from the initial position to the acting position, the pushing portion of the operating member pushes against the forward face of one of the engagement teeth, such that one of the engagement teeth is in the engagement position; and when the operating member moves from the acting position to the initial position, the pushing portion passes over the next one of engagement teeth and makes the next one of engagement teeth in its avoidance position by pushing against the backward face of the next one of engagement teeth.
In an embodiment, the intermittent movement device further includes: a plurality of engagement tooth elastic members, respectively arranged between the plurality of engagement teeth and the driving member to bias the engagement teeth to the engagement position; and the engagement teeth protrude farther radially with respect to the first axis in the engagement position than in the avoidance position.
In an embodiment, the engagement tooth elastic members are compression springs, and each of the engagement teeth includes an engagement tooth elastic member accommodation portion to at least partially accommodate one end of each of the engagement tooth elastic members.
In an embodiment, the driving member includes: a plurality of engagement tooth grooves, concavely formed from one side surface of the driving member, and distributed circumferentially based on the first axis, so as to respectively accommodate the plurality of engagement teeth, each of the engagement tooth grooves includes: an engagement limit portion, for resisting a corresponding one of the engagement teeth from further rotating beyond the engagement position with respect to the driving member when the engagement tooth is in its engagement position; an avoidance limit portion, for resisting a corresponding one of the engagement teeth from further rotating beyond the avoidance position with respect to the driving member when the engagement tooth is in its avoidance position; and an engagement tooth elastic member abutting portion, arranged adjacent to the avoidance limit portion for being abutted against by the other end of the engagement tooth elastic member.
In an embodiment, the engagement limit portions, the avoidance limit portions, and the engagement tooth elastic member abutting portions are all axially extending walls of the engagement tooth grooves, and the engagement limit portions are radially opposite to both the avoidance limit portions and the engagement tooth elastic member abutting portions, wherein the engagement limit portions are radial outer side walls of the engagement tooth grooves, the avoidance limit portions and the engagement tooth elastic member abutting portions are respectively radial inner side walls of the engagement tooth grooves.
In an embodiment, a stroke of each reciprocating movement of the operating member is equal to or greater than a spacing between two adjacent engagement teeth.
In an embodiment, the operating member further includes an operating member body, and the operating member body is coaxially arranged with the driving member along the first axis; the plurality of engagement teeth are arranged on a side of the driving member facing the operating member body; and a pushing portion is disposed on a side of the operating member body facing the driving member, and the pushing portion is arranged to protrude axially and push against one of the engagement teeth when the operating member moves from the initial position to the acting position.
In an embodiment, the housing includes a disk-shaped surface opposite to the operating member body, and a circumferentially extending insertion slot is formed in the disk-shaped surface; the operating member further includes an insertion post, and the insertion post extends axially toward an interior of the housing; the insertion post is inserted into the insertion slot, slides along the insertion slot when the operating member performs reciprocating movement with respect to the driving member, and the insertion slot limits a stroke of the movement of the operating member between the acting position and the initial position; and the intermittent movement device further includes an operating elastic member, the operating elastic member is disposed in the insertion slot and abuts between an end wall of the insertion slots and the insertion post, biasing the operating member to the initial position.
A wheel locking structure according to the application includes: the intermittent movement device according to the application; a wheel, rotatably connected to the housing around the first axis, the wheel is provided with a parking hole on a side facing the housing, and the operating member and the wheel are located on opposite sides of the driving member; a pin, disposed in the housing and located between the driving member and the wheel, and capable of moving axially between a parking position and a non-parking position, in the parking position, the pin is inserted into the parking hole to prevent the wheel from rotating, and in the non-parking position, the pin leaves the parking hole to allow the wheel to rotate; wherein the driving member of the intermittent movement device is rotatably connected in the housing and abutting against one end of the pin, the driving member is provided with parking portions protruding toward the wheel and non-parking portions recessed away from the wheel on a side abutting against the pin, and as the driving member rotates, one of the parking portions or one of the non-parking portions abuts against the pin, such that the pin moves to the parking position or the non-parking position.
In an embodiment, the pin is provided with a first indicating portion and a second indicating portion axially arranged and have different visual effects; a circumferential wall of the housing is provided with an indication window, when the pin is in the non-parking position, the first indicating portion is exposed to outside corresponding to a position of the indication window, and when the pin is in the parking position, the second indicating portion is exposed to outside corresponding to the position of the indication window.
In an embodiment, a pin elastic member is disposed between the pin and the housing, and the pin elastic member biases the pin to the non-parking position.
In an embodiment, the parking portions and the non-parking portions are alternately distributed around the first axis.
In an embodiment, the wheel locking structure further includes: the other wheel, arranged in pair with the wheel and rotatably connected to the other housing around the first axis, and the other wheel is provided with the other parking hole on a side facing the other housing; the other pin, arranged in the other housing, capable of moving axially between its parking position and non-parking position, in the parking position of the other pin, the other pin is inserted into the other parking hole to prevent the other wheel from rotating, and in the non-parking position of the other pin, the other pin leaves the other parking hole to allow the other wheel to rotate; the other driving member, rotatably connected in the other housing and connected against one end of the other pin, the other driving member is provided with the other parking portion protruding toward the other wheel and the other non-parking portion recessed away from the other wheel on a side abutting against the other pin, and as the other driving member rotates, the other parking portion or the other non-parking portion abuts against the other pin, such that the other pin moves to the other parking position or the other non-parking position; a cable, having one end connected to a cable second end connecting portion at a periphery of the other driving member, and the other end connected to the driving member through a linkage mechanism, when one of the parking portions of the driving member abuts against the pin to enter its parking position, the driving member brings the other driving member to move by the linkage mechanism and the cable, such that the other driving member rotates to the other parking portion abutting against the other pin to enter it parking position.
In an embodiment, the linkage mechanism includes: a linkage slider, disposed in the housing and capable of sliding with respect to the wheel in a direction perpendicular to the first axis, and the other end of the cable is connected to a cable first end connecting portion of the linkage slider; a linkage seat, disposed in the housing and capable of sliding with respect to the wheel in a direction parallel to the first axis, the linkage seat and the linkage slider are engaged in an inclined plane; and the linkage mechanism is configured such that when one of parking portions abuts against the pin, another one of the parking portions abuts against the linkage seat, such that the linkage seat slides in a direction parallel to the first axis, and the linkage seat brings the linkage slider to slide vertically to the first axis through inclined plane engagement, and the linkage slider brings the other driving member to rotate through the cable.
A stroller according to the application includes: a stroller frame; a stroller seat, erected on the stroller frame; a front wheel and a rear wheel, disposed below the stroller frame; and the wheel locking structure according to the application, wherein the wheel is the front wheel or the rear wheel.
The present application provides a stroller with a storage crate that is convenient to use and has a good user experience.
An aspect of the disclosure provides a stroller comprising:
In such stroller, by the locking mechanism arranged between the stroller frame and the storage crate, locking and unlocking between the storage crate and the stroller frame can be realized only by rotating the handlebar with one hand, which is convenient to operate. For example, a first rotating position can be set as the position where the handlebar is horizontally arranged, and a second rotating position can be set as the position where the handlebar is vertically arranged. When it is necessary to move the storage crate away from the stroller frame, it is only required to rotate the handlebar from the horizontal position to the vertical position with one hand to unlock the storage crate from the stroller frame, so as to lift the storage crate away from the stroller frame. In addition, there is no need to arrange any additional operating member between the stroller frame and the storage crate to realize unlocking and locking between the storage crate and the stroller frame, which is simple in structure and saves costs.
In an embodiment, the locking mechanism includes an actuating member, a first locking portion, and a second locking portion, the actuating member is fixed on the handlebar, the first locking portion is arranged on the storage crate, the second locking portion is arranged on the stroller frame, and the handlebar rotates to bring the actuating member to rotate, such that the actuating member drives the first locking portion and the second locking portion to be locked to each other or unlocked from each other.
In an embodiment, the actuating member is provided with an inclined pushing rib, the first locking portion is an engagement block, the second locking portion is an engagement hole, when the handlebar rotates to the second rotating position, the handlebar is able to bring the actuating member to rotate, so that the pushing rib drives the engagement block to be disengaged from the engagement hole.
In an embodiment, the locking mechanism further includes a pushing block fixedly connected to the engagement block, and the pushing block is able to abut against the pushing rib.
In an embodiment, the locking mechanism further includes a first reset member, and the first reset member always biases the engagement block to move toward a direction to be engaged with the engagement hole.
In an embodiment, the locking mechanism further includes a fixed seat arranged on the stroller frame and a connecting seat arranged on the storage basket, the engagement hole is arranged on the fixed seat, and the engagement block is movably arranged on the connecting seat.
In an embodiment, the fixed seat is provided with a cooperative bulge, and the connecting seat is provided with a cooperative groove matched with the cooperative bulge.
In an embodiment, the locking mechanism further includes a first reset member and a connecting cover, the first reset member is located between the connecting cover and the connecting seat, the connecting seat has an accommodation hole, two ends of the first reset member are respectively abutted against the connecting cover and the engagement block, and the engagement block is movably arranged in the accommodation hole.
In an embodiment, the locking mechanism further includes a positioning member, the positioning member is fixedly connected to the connecting seat, the actuating member is rotatably connected to the positioning member, and the actuating member is able to be fixed at a plurality of positions with respect to the positioning member.
In an embodiment, the positioning member is provided with at least one connecting hole, and the connecting seat is provided with at least one connecting arm being able to be cooperatively fixed with the connecting hole.
In an embodiment, the positioning member is provided with at least one first locating portion, and the actuating member is circumferentially provided with a plurality of second locating portions being able to cooperate with the first locating portion along a circumferential direction; or the actuating member is provided with at least one first locating portion, and the positioning member is provided with a plurality of second locating portions being able to cooperate circumferentially with the first locating portion.
In an embodiment, the positioning member is provided with at least one elastic arm, the elastic arm is provided with at least one positioning convex, and the actuating member is circumferentially provided with a plurality of positioning concaves being able to cooperate with the positioning convex.
In an embodiment, the stroller frame includes a handrail support rod, and the fixed seat is slidably arranged on the handrail support rod.
In an embodiment, the storage basket includes a connecting frame and a covering fabric sleeved on the connecting frame.
In an embodiment, the connecting frame includes a first connecting tube and a second connecting tube, there are two locking mechanisms and the two locking mechanisms are respectively located on left and right sides of the stroller frame, and the connecting pins are arranged on both sides of the connecting seat of each of the locking mechanisms, so as to be inserted and connected to one end of the first connecting tube and one end of the second connecting tube.
Another aspect of the disclosure provides a stroller comprising:
In such stroller, the storage crate is arranged on the front foot support rod of the stroller frame, which is convenient for the spatial structure design of the stroller. Particularly for the stroller with upper and lower double seats, the storage crate is arranged on the front foot support rod, which can avoid interference of the lower seat of the stroller to the storage crate, thus realizing the effect of coexistence of the storage crate and the lower seat.
In an embodiment, the storage crate includes a connecting frame and a covering fabric sleeved on the connecting frame, and the connecting frame is arranged on the front foot support rod.
In an embodiment, the connecting frame is rotatably connected to the front foot support rod.
In an embodiment, the stroller further comprises a first engagement seat and a second engagement seat, the first engagement seat is arranged on the front foot support rod, and the second engagement seat is arranged on the connecting frame.
In an embodiment, one end of the first engagement seat is rotatably connected to the second engagement seat, and the other end of the first engagement seat is rotatably connected to the front foot support rod.
In an embodiment, the first engagement seat includes a turntable pivoted to the front foot support rod, the turntable is circumferentially provided with a plurality of first cooperative portions, the stroller further comprises a second cooperative portion movably arranged on the front foot support rod, and the second cooperative portion is able to cooperate with any of the first cooperative portions.
In an embodiment, the first cooperative portions are cooperative slots arranged on the turntable, and the second cooperative portion is a cooperative pin movably arranged on the front foot support rod.
In an embodiment, the stroller further comprises a second reset member, and the second reset member always biases the cooperative pin to move toward a direction close to the cooperative slot.
In an embodiment, the first engagement seat and the second engagement seat are detachably connected.
In an embodiment, the stroller frame further includes a first sitting assembly, a second sitting assembly, two handrail support rods, and two rear foot support rods, the first sitting assembly is arranged between the two handrail support rods, and the second sitting assembly is arranged between the two rear foot support rods.
Although the present invention is illustrated and described herein with reference to specific embodiments, the invention should not be limited to the details shown. Exactly, many modifications can be made to these details within the scope of the equivalents of the claims without departing from the invention.
The directional descriptions involved herein, such as “front,” “back,” “up,” and “down,” are only for convenience of understanding. The invention is by no means limited to these directions, but can be adjusted according to the actual situation. Although the application is described with reference to typical embodiments, the terms used are illustrative and exemplary, not restrictive.
It should be noted, when an element is said to be “fixed” to another element, it may be directly on another element or there may be intervening elements between them. When an element is considered to be “connected” to another element, it may be directly connected to another element or there may be intervening elements between them. The terms “vertical,” “horizontal,” “left,” “right,” and similar expressions used herein are only for purpose of illustration and are not mean the only implementation.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the disclosure. The terminology used in the description of the disclosure herein is only for purpose of describing specific embodiments, and is not intended to limit the disclosure. Furthermore, the expression “and/or” used herein includes any and all combinations of one or more related items.
Now a stroller frame 1300 of a stroller according to the application will be generally described with reference to
In the wheel locking structure according to the application, an operating member 1160 is disposed at the wheel 1120. A non-pressed state of the operating member 1160 is shown in
While referring to
In this embodiment, the rotational axis of the driving member 1140 and the rotational axis of the wheel 1120 are the same as a first axis 1141, which can simplify the manufacturing process. However, this is not necessary, rather, the rotational axis of the driving member 1140 may deviate from the first axis 1141, such as some other axes parallel to the first axis 1141.
The pin 1130 is provided with a first indicating portion 1134 and a second indicating portion 1135 which are arranged along the axis and have different visual effects (more clearly shown in
Referring to
The housing 1110 is approximately cylindrical with one end open, and includes a disk-shaped surface opposite to an operating member body 1161, and one or more circumferentially extending insertion slots 1112 are formed in the disk-shaped surface. The operating member 1160 includes one or more insertion posts 1164, and each insertion post 1164 extends axially toward the interior of the housing 1110. The insertion post(s) 1164 is inserted into the insertion slot(s) 1112, and slides along the insertion slot(s) 1112 when the operating member 1160 performs a reciprocating movement with respect to the driving member 1140. The insertion slot(s) 1112 limits a stroke of the movement of the operating member 1160 between an acting position and an initial position. The intermittent movement device further comprises one or more operating elastic members 1192. The operating elastic member(s) 1192 is disposed in the corresponding insertion slot(s) 1112 and abuts between an end wall of the insertion slot(s) 1112 and the corresponding insertion post(s) 1164, biasing the operating member 1160 to the initial position (i.e., the non-pressed position shown in
In this embodiment, the housing 1110 is provided with three insertion slots 1112, and the operating member 1160 is correspondingly provided with three insertion posts 1164. The three insertion posts 1164 are respectively inserted into the three insertion slots 1112, and the three operating elastic members 1192 respectively abut between the three insertion slots 1112 and the three insertion posts 1164. Such arrangement can provide more uniform resilience for the operating member 1160. However, the application is not limited to this, and in other embodiments, more or less insertion slots 1112, insertion posts 1164, and operating elastic members 1192 may be arranged as long as the stroke of the operating member 1160 can be met. Furthermore, the number of the operating elastic member 1192 is not necessarily corresponding to the number of the insertion slots 1112, that is, it is not necessary to provide the operating elastic member 1192 in each insertion slot 1112.
Referring to
The wheel 1120 is rotatably connected to the housing 1110 around the first axis 1141, and the wheel 1120 is provided with a parking hole 1121 and a wheel axle 1122 on the side facing the housing 1110. More specifically, the wheel axle 1122 is rotatably inserted into a wheel axle hole 1114 of the housing 1110. The operating member 1160 and the wheel 1120 are located at both axial sides of the driving member 1140. The pin 1130 is arranged in the pin hole 1113 of the housing 1110, between the driving member 1140 and the wheel 1120, and can move between the parking position and the non-parking position in the axial direction. In parking position, the pin 1130 is inserted into the parking hole 1121 to prevent the wheel 1120 from rotating, and in the non-parking position, the pin 1130 leaves the parking hole 1121 to allow the wheel 1120 to rotate. The driving member 1140 of the intermittent movement device is rotatably connected in the housing 1110 and always abutting against one end of the pin 1130. The driving member 1140 is provided with a parking portion 1145 protruding toward the wheel 1120, a non-parking portion 1146 recessed away from the wheel 1120, and a driving slope 1147 located between the parking portion 1145 and the non-parking portion 1146 on the side abutting against the pin 1130 (
The driving member 1140 is arranged in the housing 1110 and can rotate around the first axis 1141. A plurality of engagement teeth 1150 are uniformly distributed circumferentially based on the first axis 1141 and pivotably connected to the driving member 1140 (see
Referring to
The driving member shaft hole 1142 is located at the first axis 1141, and is arranged on the housing 1110 to allow the driving member 1140 to rotate around the first axis 1141.
The engagement tooth grooves 1143 are concavely formed from one side surface of the driving member 1140, and uniformly distributed circumferentially based on the first axis 1141, so as to accommodate the plurality of engagement teeth 1150. Each of the engagement tooth grooves 1143 includes an engagement limit portion 1143a, an avoidance limit portion 1143b, and an engagement tooth elastic member abutting portion 1143c. When the engagement teeth 1150 are in their engagement position, the engagement limit portions 1143a resist the engagement teeth 1150 from further rotating beyond the engagement position with respect to the driving member 1140. When the engagement teeth 1150 are in their avoidance position, the avoidance limit portions 1143b resist the engagement teeth 1150 from further rotating beyond the avoidance position with respect to the driving member 1140. The engagement tooth elastic member abutting portions 1143c are arranged adjacent to the avoidance limit portion 1143b for being abutted against by one end of the engagement tooth elastic member 1193.
In this embodiment, six engagement tooth grooves 1143 are provided. However, in other embodiments, more or less engagement tooth grooves 1143 may be provided corresponding to the number of the engagement teeth 1150.
In this embodiment, the engagement limit portions 1143a, the avoidance limit portions 1143b, and the engagement tooth elastic member abutting portions 1143c are all axially extending walls of the engagement tooth grooves 1143, and the engagement limit portions 1143a are radially opposite to both the avoidance limit portions 1143b and the engagement tooth elastic member abutting portions 1143c. Among them, the engagement limit portions 1143a are radial outer side walls of the engagement tooth grooves 1143, and the avoidance limit portions 1143b and the engagement tooth elastic member abutting portions 1143c are respectively radial inner side walls of the engagement tooth grooves 1143.
More specifically, the engagement limit portions 1143a are close to the outer periphery of the driving member 1140, and the outer surfaces of the engagement limit portions 1143a are flush with the outer peripheral surface of the driving member 1140. A gap between two adjacent engagement limit portions 1143a allows one of the engagement teeth 1150 to protrude to a radial outside of the outer peripheral surface of the driving member 1140. The avoidance limit portions 1143b are close to the driving member shaft hole 1142, and the engagement tooth shafts 1144 are located between the engagement limit portions 1143a and the avoidance limit portions 1143b. In an embodiment, the engagement limit portions 1143a and the avoidance limit portions 1143b are formed in an arc shape opposite to each other, and the engagement tooth shafts 1144 are located at the curvature center of the engagement limit portions 1143a and the avoidance limit portions 1143b.
On the side facing the wheel 1120, the parking portion 1145 of the driving member 1140 protrudes toward the wheel 1120, and the non-parking portion 1146 is recessed away from the wheel 1120. Both the parking portion 1145 and the non-parking portion 1146 are fan-shaped surfaces substantially perpendicular to the first axis 1141. The extension angle of the parking portion 1145 in the circumferential direction is larger than that of the non-parking portion 1146. The non-parking portion 1146 is connected to the parking portion 1145 through a relatively gentle driving slope 1147 at one end, and is connected to another parking portion 1145 through a relatively steep slope at the other end.
The plurality of parking portions 1145 and the plurality of non-parking portions 1146 are uniformly and alternately distributed around the axis of the driving member 1140. In this way, every time the driving member 1140 rotates by one engagement tooth spacing, the position corresponding to the pin 1130 will be switched from one of the parking portions 1145 to one of the non-parking portions 1146, or from one of the non-parking portions 1146 to one of the parking portions 1145.
Referring to
The engagement tooth elastic members 1193 may be compression springs. Each engagement tooth 1150 includes an engagement tooth shaft hole 1153, a forward face 1151, a backward face 1152, and an engagement tooth elastic member accommodation portion 1154. The engagement tooth shaft hole 1153 is located at a second axis 1155 parallel to the first axis 1141, and is sleeved on one of the engagement tooth shafts 1144 of the driving member 1140, so as to allow the engagement teeth 1150 to rotate between the engagement position and the avoidance position around the respective second axes 1155 with respect to the driving member 1140. The forward face 1151 and the backward face 1152, at the free end of the corresponding engagement tooth 1150, both extend axially and form an included angle therebetween, which is an acute angle in this embodiment. The engagement tooth elastic member accommodation portion 1154 is disposed near the engagement tooth shaft hole 1153. The two ends of each engagement tooth elastic member 1193 (
Referring to
The operating member 1160 includes an operating member body 1161, a pedal 1162, a pushing portion 1163, and insertion posts 1164. The operating member body 1161 is approximately disc-shaped, and is coaxially arranged with the driving member 1140 along the first axis 1141. The engagement teeth 1150 are disposed on the side of the driving member 1140 facing the operating member body 1161. The pushing portion 1163 is disposed on the side of the operating member body 1161 facing the driving member 1140 and protrudes axially. The pushing portion 1163 is arranged to push against one of the engagement teeth 1150 when the operating member 1160 moves from the initial position to the acting position.
Referring to
The pin 1130 includes a pin inserting portion 1131, a pin abutting portion 1132, a pin elastic member accommodating portion 1133, a first indicating portion 1134, and a second indicating portion 1135. The pin 1130 is roughly cylindrical, and the pin inserting portion 1131 and the pin abutting portion 1132 are located at opposite ends of the cylindrical pin 1130, that is, the pin inserting portion 1131 is located at one end facing the wheel 1120, and the pin abutting portion 1132 is located at the other end facing the driving member 1140. The pin elastic member accommodating portion 1133 is arranged as a cylindrical hollow inner space and is open to the pin inserting portion 1131. The first indicating portion 1134 and the second indicating portion 1135 extend outward from a side of the cylindrical. Among them, the first indicating portion 1134 is close to the pin inserting portion 1131, and the second indicating portion 1135 is close to the pin abutting portion 1132. As mentioned above, the first indicating portion 1134 and the second indicating portion 1135 may have different visual effects, such as different colors. A pin elastic member 1194 is sleeved on the pin inserting portion 1131 and at least partially accommodated in the pin elastic member accommodating portion 1133. Both ends of the pin elastic member 1194 respectively abut against the pin elastic member accommodating portion 1133 and the housing 1110, so as to bias the pin 1130 toward the driving member 1140, i.e., toward the non-parking position.
Referring to
In
When the user wants to switch the parking/non-parking state, he may press down the operating member 1160, such that the operating member 1160 moves from the initial position to the acting position. When the operating member 1160 moves from the initial position to the acting position, the pushing portion 1163 of the operating member 1160 pushes against the forward face 1151 of one engagement tooth 1150 (i.e., the engagement tooth 1150 indicated by the arrow in
In
In
In this way, during a reciprocating cycle in which the operating member 1160 moves from the initial position to the acting position, and then moves from the acting position to the initial position, the driving member 1140 rotates by one engagement tooth spacing, thus realizing an intermittent movement of the driving member 1140. By such intermittent movement, the stroller is switched from the non-parking state to the parking state, or from the parking state to the non-parking state.
In addition, if there is an idle stroke between the operating member 1160 in the initial position and the engagement teeth 1150, the intermittent movement device can allow an incomplete pressing operation of the user. Specifically, in the case there is provided with an idle stroke, if the operating member 1160 is not completely moved in place during the pressing process, the driving member 1140 and the respective engagement teeth 1150 will not be completely rotated in place, and the pushing portion 1163 of the operating member 1160 can still pass over the next engagement tooth 1150 during the resetting process. In the case there is no idle stroke, if the driving member 1140 and the respective engagement teeth 1150 are not completely rotated in place, the pushing portion 1163 will not be able to pass over the next engagement tooth 1150, resulting in the next reciprocating movement of the operating member 1160 cannot bring the driving member 1140 to move.
In the case there is no idle stroke, a stroke of the reciprocating movement of the operating member 1160 is equal to the spacing between two adjacent engagement teeth 1150. While in the case there is an idle stroke, a stroke of the reciprocating movement of the operating member 1160 is larger than the spacing between two adjacent engagement teeth 1150.
In this embodiment, the engagement teeth 1150 perform rotation movement with respect to the driving member 1140. In other embodiments, the engagement teeth 1150 may also linearly move with respect to the driving member 1140, and each of the engagement teeth 1150 may linearly move between the engagement position and the avoidance position along a direction perpendicular to the first axis 1141, respectively. Specifically, the direction of the linear movement of the engagement teeth 1150 is perpendicular to the first axis 1141, e.g., the radial direction of the driving member 1140.
Referring to
Referring to
In order to provide a braking effect to both the wheel 1120 and the other wheel 1220, the wheel locking structure includes the other wheel 1220, the other housing 1210, the other pin 1230, the other driving member 1240, a cable 1191, and a linkage mechanism.
The other wheel 1220 is arranged in pair with the wheel 1120, and rotatably connected to the other housing 1210 around the first axis 1141. A stroller frame 1300 is erected between the other housing 1210 and the housing 1110, and the other wheel 1220 is provided with the other parking hole (not shown) on the side facing the other housing 1210.
The other pin 1230 is arranged in the other housing 1210. The other pin 1230 has roughly the same structure and arrangement as the pin 1130, and can also move axially between the parking position and the non-parking position. In the parking position of the other pin 1230, the other pin 1230 is inserted into the other parking hole to prevent the other wheel 1220 from rotating, and in the non-parking position of the other pin 1230, the other pin 1230 leaves the other parking hole to allow the other wheel 1220 to rotate.
The other driving member 1240 is rotatably connected in the other housing 1210, and abuts against an end of the other pin 1230. The other driving member 1240 is provided with the other parking portion 1245 protruding toward the other wheel 1220 and the other non-parking portion 1246 recessed away from the other wheel 1220 on the side abutting against the other pin 1230. As the other driving member 1240 rotates, the other parking portion 1245 or the other non-parking portion 1246 abuts against the other pin 1230, such that the other pin 1230 moves to its parking position or its non-parking position. As shown in
The other pin 1230 is provided with the other first indicating portion 1234 and the other second indicating portion 1235, which are arranged and functioning the same as the first indicating portion 1134 and the second indicating portion 1135, and will not be described redundantly.
One end of the cable 1191 is connected to a cable first end connecting portion 1171 of a linkage slider 1170 of the linkage mechanism. The other end of the cable 1191 is connected to the periphery of the other driving member 1240, specifically to a cable second end connecting portion 1241 at the periphery of the other driving member 1240. Both ends of the cable 1191 may have hammer heads 1191a (see
The linkage mechanism includes a linkage slider 1170 and a linkage seat 1180. The linkage slider 1170 is disposed in the housing 1110, and can slide with respect to the wheel 1120 in a direction perpendicular to the first axis 1141. The linkage seat 1180 is disposed in the housing 1110, and can slide with respect to the wheel 1120 in a direction parallel to the first axis 1141. The linkage seat 1180 and the linkage slider 1170 are engaged in an inclined plane.
The linkage mechanism is configured such that when one parking portion 1145 abuts against the pin 1130, the other parking portion 1145 abuts against the linkage seat 1180, such that the linkage seat 1180 slides in the direction parallel to the first axis 1141, and the linkage seat 1180 brings the linkage slider 1170 to slide vertically to the axial direction through inclined plane engagement, and the linkage slider 1170 brings the other driving member 1240 to rotate through the cable 1191.
As shown in
The linkage seat 1180 extends roughly in a direction parallel to the first axis 1141, and includes a linkage seat abutment portion 1181, a cylindrical portion 1182, and slope portions 1183. The linkage seat abutment portion 1181 is at an end of the linkage seat 1180 close to the driving member 1140, the cylindrical portion 1182 extends from the linkage seat 1180 to an end of the linkage seat 1180 away from the driving member 1140, and the slope portions 1183 extend laterally from both sides of the linkage seat 1180 and have an inclination corresponding to the slider slopes 1172. The position of the linkage seat 1180 with respect to the driving member 1140 is set such that when one parking portion 1145 of the driving member 1140 abuts against the pin 1130, the other parking portion 1145 of the driving member 1140 abuts against the linkage seat 1180; and when one non-parking portion 1146 of the driving member 1140 abuts against the pin 1130, the other non-parking portion 1146 of the driving member 1140 abuts against the linkage seat 1180.
Referring to
Referring to
Referring to
In
In conclusion, the application provides a wheel locking structure, which allows the user to switch between a parking state and a non-parking state only by pressing down an operating member. The wheel locking structure of the application also allows linkage between two wheels, and the user can switch the parking/non-parking states of both wheels at the same time only by pressing down one operating member.
As shown in
Specifically, the stroller frame 2100 includes two handrail support rods 2110, two front foot support rods (not shown), two rear foot support rods (not shown), and four wheel assemblies (not shown). Lower ends of the two handrail support rods 2110 are respectively connected to top ends of the two front foot support rods, the two rear foot support rods are respectively connected to the two front foot support rods at a certain angle, and the four wheel assemblies are respectively arranged at bottom ends of the two front foot support rods and the two rear foot support rods.
Specifically, as shown in
Specifically, as shown in
As shown in
Further, as shown in
Further, as shown in
Optionally, as shown in
Further, as shown in
In this embodiment, as shown in
In this embodiment, as shown in
Further, as shown in
Further, the locking mechanism 2300 also includes a pivot shaft (not shown), the driving body 2322 is provided with a first pivot hole 2322d, the connecting seat 2330 is provided with a second pivot hole 2334, the connecting cover 2350 is provided with a third pivot hole 2351, and the positioning member 2390 is provided with a fourth pivot hole 2393. The pivot shaft passes through the second pivot hole 2334, the fourth pivot hole 2393, the first pivot hole 2322d, and the third pivot hole 2351, thus realizing rotation of the driving body 2322 with respect to the connecting seat 2330, the positioning member 2390, and the connecting cover 2350.
It could be understood, the specific structure of another locking mechanism 2300 is similar to that of this locking mechanism 2300, and will not be redundantly described here.
The use process of the above stroller will be described as follows:
When it is required to unlock and move the storage crate 2200 from the stroller frame 2100, the handlebar 2220 is rotated from the horizontal position to the vertical position, and the actuating members 2320 are brought by the handlebar 2220 to rotate, such that the pushing ribs 2322c abut against the pushing blocks 2360 at the position A. The pushing blocks 2360 brings the engagement blocks 2370 to move towards a direction close to the connecting covers 2350, i.e., away from the connecting seats 2330 and the fixed seat 2310, the first reset members 2380 are compressed, the engagement blocks 2370 are disengaged from the engagement holes 2312, the storage crate 2200 is pulled upward, and the cooperative bulges 2313 are separated from the cooperative groove 2331. At this time, the storage crate 2200 can be unlocked and removed from the stroller frame 2100, as shown in
When it is required to fix the storage crate 2200 on the stroller frame 2100, the storage crate 2200 is placed on the stroller frame 2100, such that the cooperative grooves 2331 of the locking mechanisms 2300 on both sides of the storage crate 2200 (see
Such stroller has at least the following technical effects:
In the stroller, the locking mechanisms 2300 are arranged between the stroller frame 2100 and the storage crate 2200, and locking and unlocking between the storage crate 2200 and the stroller frame 2100 can be realized only by rotating the handlebar 2220, which is convenient to operate. For example, the first rotating position can be set as the position where the handlebar 2220 is horizontally arranged, and the second rotating position can be set as the position where the handlebar 2220 is vertically arranged. Then, when it is required to remove the storage crate 2200 from the stroller frame 2100, it is only necessary to rotate the handlebar 2220 from the horizontal position to the vertical position with one hand, so as to unlock the storage crate 2200 from the stroller frame 2100, thus lifting the storage crate 2200 away from the stroller frame 2100. In addition, no any additional operating member is necessary to be arranged between the stroller frame 2100 and the storage crate 2200 to realize unlocking and locking between the storage crate 2200 and the stroller frame 2100, so the structure is simple and the cost is saved.
As shown in
Specifically, as shown in
Specifically, as shown in
In this embodiment, as shown in
As shown in
Of course, in other embodiments, as shown in
Further, as shown in
The stroller has at least the following technical effects:
In such stroller, the storage crate 2200 is arranged on the front foot support rods 2120 of the stroller frame 2100, which is convenient for the spatial structure design of the stroller. Particularly for the stroller with upper and lower double seats, the storage crate 2200 is arranged on the front foot support rods 2120, which can avoid interference of the lower seat of the stroller to the storage crate 2200, thus realizing the effect of coexistence of the storage crate 2200 and the lower seat.
The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction between the combinations of these technical features, they should be considered as falling within the scope recorded in this specification.
Since the application can be embodied in various forms without departing from the spirit and essence of the application, it should be understood, the above embodiments are not limited to any of the foregoing details, but should be interpreted in the broadest sense within the scope defined by the claims. Therefore, all changes that fall within the scope of the claims or their equivalents should be covered by the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202210233697.1 | Mar 2022 | CN | national |
| 202210508863.4 | May 2022 | CN | national |
This application is a National Stage application of PCT/EP2023/056210, entitled “INTERMITTENT MOVEMENT DEVICE, WHEEL LOCKING STRUCTURE AND STROLLER” and filed on Mar. 10, 2023, which claims the benefit of Chinese Application No. 202210233697.1, filed on Mar. 10, 2022 and Chinese Application No. 202210508863.4, filed on Mar. 10, 2022, each of which are incorporated herein by reference in their entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2023/056210 | 3/10/2023 | WO |
