Patent Application
20230322287
The present invention pertains to the technical field of display device racks, and specifically pertains to a device rack with a braking function.
At present, with the development of society, audiovisual devices such as displays and tablets become more and more popular. These audiovisual devices are usually plate-like structures. Due to large volume and heavy weight, they usually need to be safely supported by means of racks for users to watch. For the convenience of moving the position of an existing rack, universal rollers are arranged on a base, and movement or standstill of the rack on a support surface is supported by the roller. For example, Patent No. CN217875118U discloses a display liftable rack which comprises a base and a column, the base is connected with a bottom of the column, a top of the column is connected with a display connection rack, and a plurality of pulleys are arranged around a periphery of the base, and the pulleys are used for moving the base. When a user uses the rack, in order to meet the viewing comfort, the rack is usually translated or the height of the display is adjusted by means of the pulleys according to own need, so as to adjust to a position for the user to see clearly, which is beneficial to the health of the user's cervical spine and eyes.
However, when the user adjusts an azimuth angle of the display by rotating, the pulleys roll to drive the base to move, so that a fixed position of the rack on the support surface changes, which makes it difficult to ensure that a distance between the display and the user is maintained within a suitable range, and the user also needs to adjust the position of the rack several times, compromising user experience.
The purpose of the present invention is to provide a device rack with a braking function in order to solve the above-mentioned technical shortcomings. By linking a brake member, a base achieves centered braking on a support surface, which is convenient for a user to arrange the rack around the brake member to adjust an azimuth angle of a display, and ensures that a distance between the display and the user is maintained within a suitable distance when the angle is adjusted to improve user experience.
The device rack with a braking function of the present invention comprises a base for being placed on a support surface, a column tube having a bottom end connected with the base, a mounting member for being fixed to the column tube, a plurality of universal rolling members provided on a bottom surface of the base, a brake member telescopically and movably arranged on the bottom surface of the base, and a gear adjusting mechanism for controlling telescopic movement of the brake member. The brake member is controlled by the gear adjusting mechanism to extend or retract relative to the bottom surface of the base so as to be linked with the brake member to be switched to a braking release state or a braking state.
In the braking release state, the brake member is separated from the support surface, and the base is simultaneously rotatably and translatably arranged relative to the support surface, so that the device rack can be arbitrarily translated, rotated or translated and rotated simultaneously. In the braking state, the brake member extends to contact the support surface so as to lock displacement movement of the base relative to the support surface instead of rotary movement by friction between the brake member and the support surface, so that the base is only rotatably arranged about the brake member instead of being translatably arranged.
Compared with the prior art, the present invention has the following beneficial effects: for the device rack with a braking function of the present invention, the mounting member is connected with the base via the column tube, any audiovisual device such as a display and tablet can be dismounted and mounted on the mounting member, the base is rotatably and translatably arranged on the support surface via the universal rolling members, so that the user can adjust the position of the audiovisual device, and when the distance between the rack and the user is suitable, the user links the brake member via the gear adjusting mechanism to make it extend from the base and interfere with the support surface, so that the base achieves the centered braking on the support surface, and the brake member is arranged at the underside of the column tube to further strengthen the centered braking of the rack by means of the weight of the column tube and the mounting member, so that the base can be rotatably arranged around the brake member to adjust the azimuth of the display and ensure that the distance between the display and the user is maintained within a suitable range when the azimuth angle of the display is adjusted, which improves the user experience.
The device rack with a braking function of the present invention is controlled by the linked brake member to achieve centered braking of the base on the support surface, which facilitates the user to adjust operating state of the device rack to switch between a rotatable and translatable braking release state and a rotatable-only braking state. Moreover, the switching operation can be preferably achieved by rotating or pressing, which is easy to operate.
Reference numerals in the drawings: 1. base; 2. column tube; 21. upper column; 22. lower column; 3. mounting member; 4. mounting cavity; 5. universal rolling member; 6. brake member; 61. rubber block; 62. first elastic member; 7. drive rod; 71. screw; 72. upper shaft rod; 73. lower shaft rod; 8. gear adjusting mechanism; 81. rotary handle; 82. connecting end cap; 9. drive hole; 10. bearing member; 11. telescoping mechanism; 111. mounting bracket; 112. Guide column; 113. mounting housing; 12. movable hole; 13. through hole; 14. limiting member; 15. gear cavity; 16. mounting tube; 17. gear member; 18. second elastic member; 19. connector; 20. support hole; 23. coupling; 24. mounting column; 25. lock sleeve.
The present invention is further described below by way of embodiments with reference to the accompanying drawings.
Referring to
A bottom surface of the base 1 is provided with a plurality of universal rolling members 5 in a surrounding manner. The universal rolling members 5 are, for example, universal casters can rotate 360° horizontally, and the bottom surface of the base 1 is formed with a mounting cavity 4 for mounting the universal rolling members 5, so that bottoms of the universal rolling members 5 expose the mounting cavity 4 and interfere with the support surface, so that the base 1 is simultaneously rotatably and translatably arranged on the support surface.
The brake member 6 is connected with a bottom end of the drive rod 7, and the drive rod 7 is connected in the column tube 2 in an interpenetrating manner, the column tube 2 is provided with a gear adjusting mechanism 8 connected with a top of the drive rod 7, and the brake member 6 is controlled by the gear adjusting mechanism 8 to extend or retract relative to the bottom surface of the base 1, so that the brake member 6 has a braking state and braking release state.
In the braking state, the brake member 6 extends from the base 1 and contacts the support surface so as to interfere with displacement movement of the base 1 relative to the support surface by friction between the brake member 6 and the support surface, and the base 1 is rotatably arranged about the brake member 6.
In the braking release state, the brake member 6 is separated from the support surface, and the base 1 is simultaneously rotatably and translatably arranged relative to the support surface.
When the distance between the bracket and the user is suitable, the user links the brake member 6 via the gear adjusting structure to make it extend from the base 1 and interfere with the support surface to center and brake the rack, and the brake member 6 is arranged at the underside of the column tube 2 to strengthen the centered braking of the rack by means of the weight of the audiovisual device and the rack. A bottom end of the drive rod 7 is provided with a bearing member 10, so that the brake member 6 rotatably moves in the column tube 2, the bearing member 10 is used to assist in supporting the brake member 6 to reduce a friction coefficient during rotation thereof and to ensure a rotation accuracy. The bearing member 10 is the prior art and will not be detailed here. The bearing member 10 is provided so that when the rack is in the state of centered braking, the base 1 rotates flexibly around the brake member 6, which to a certain extent prevents the friction between the brake member 6 and the support surface from interfering with the centered rotation of the rack, so that the user can adjust the azimuth angle of the display and the distance between the display and the user is maintained within a suitable range when the azimuth angle of the display is adjusted, which improves the user experience.
Of course, in other embodiments, it is also feasible to place the brake member 6 under the column tube 2 without arrangement of the bearing member 10 to strengthen the braking effect by means of the weight of the audiovisual device and the rack.
The brake member 6 comprises a rubber block 61 and a first elastic member 62, the bearing member 10 is provided with a telescopic mechanism 11, and the first elastic member 62 is arranged in the telescopic mechanism 11 and is connected with the rubber block 61.
The telescopic mechanism 11 comprises a mounting bracket 111, a guide column 112 and a mounting housing 113, the mounting bracket 111 is connected with the bearing member 10, the mounting bracket 111 is provided with a through hole 13 in a penetrating manner, a top end of the guide column 112 is slidingly connected in the through hole 13, a bottom end of the guide column 112 is connected with the mounting housing 113, and the rubber block 61 is arranged on a bottom of the mounting housing 113 and moves in the movable hole 12 in an interpenetrating manner. The first elastic member 62 is a spring, the first elastic member 62 is arranged between the mounting bracket 111 and mounting housing 113 and is sleeved on the guide column 112, and an end of the guide column 112 exposing the through hole 13 is provided with a limiting member 14, and the limiting member 14 is a columnar structure and is inserted on the guide column 112 to limit placement of the guide column 112 away from the through hole 13.
The gear adjusting mechanism 8 comprises a rotary handle 81 and a connecting end cap 82, the rotary handle 81 is rotatably connected to the connecting end cap 82, the connecting end cap 82 is arranged on a top of the column tube 2, the connecting end cap 82 is provided with a drive hole 9 in a penetrating manner, and a top end of the drive rod 7 is arranged on the rotary handle 81 and is threadedly connected in the drive hole 9.
The drive rod 7 comprises a screw 71, an upper shaft rod 72 and a lower shaft rod 73, the screw 71 is threadedly connected in the drive hole 9, a bottom end of the lower shaft rod 73 is connected with the brake member 6, a coupling 23 is respectively provided between the screw 71 and the upper shaft rod 72 and between the upper shaft rod 72 and the lower shaft rod 73 to form the drive rod 7. The coupling 23 between the upper shaft rod 72 and the lower shaft rod 73 is located in the lower column 22. When the user turns the rotary handle 81, the threaded connection between the screw 71 and the drive rod 7 is utilized to drive the drive rod 7 to translate up and down along an axial direction thereof, thus driving the mounting housing 113 to slide in the movable hole 12, so that the rubber block 61 interferes with or is separated from the support surface. The guide column 112 is used to guide telescopic movement of the first elastic member 62. When the rubber block 61 interferes with the support surface, the first elastic member 62 is compressed and deformed, and cooperates with the guide column to guide the first elastic member 62 to strengthen tightness of the rubber block 61 against the support surface. In addition, by setting a wire diameter and height of a spring as the first elastic member 62, longitudinal dimension deviation of the rubber block 61 can be compensated, and a proper braking force of the rubber block 61 on the support surface can be controlled.
The connecting end cap 82 is formed with a gear cavity 15 for the rotary handle 81 to move, the gear cavity 15 has a wavy ring cross section, the rotary handle 81 is provided with two mounting tubes 16 arranged symmetrically, a gear member 17 is slidingly connected in the mounting tube 16, a second elastic member 18 is provided between the mounting tube 16 and the gear member 17 so that the gear member 17 extends from the mounting tube 16 and interferes with an inner concave portion or an outer convex portion of the gear cavity 15. The gear member 17 is a spherical structure, and the second elastic member 18 is a spring structure. When the user turns the rotary handle 81, an outer curved surface of the gear member 17 interferes with an inner wall of the gear cavity 15 and move along a rotating direction of the rotary handle 81, and when the user stops turning the rotary handle 81, the gear member 17 is separated from the outer convex portion in the gear cavity 15 and interferes with the inner concave portion in the gear cavity 15 under the action of the second elastic parts 18, so that the gear adjusting mechanism 8 adjusts the gear by controlling the telescopic movement of the drive rod 7 through rotation and self-locking of the rotary handle 81 after adjustment of a telescopic rod, so that the user can adjust a friction force of the rubber block 61 against the support surface accurately, further facilitating the braking operation and the braking release operation of the rack.
In the present embodiment, in the braking release state, the brake member 6 is separated from the support surface, so that the base 1 is movably arranged relative to the support surface in a rotatable and translatable manner, so that the user can adjust distance or orientation of the device rack. Specifically, rotation only, translation only or both rotation and translation are presented according to operation of the user. In the braking state, the brake member 6 extends to contact the support surface so as to lock displacement movement of the base 1 relative to the support surface by the friction force between the brake member 6 and the support surface, and the base 1 is rotatably but non-translatably arranged about the brake member 6, so that the user can adjust the orientation of the device rack rather than translating the device rack to adjust the distance.
Although in the above embodiment, the user turns the rotary handle 81 to drive the brake member 6 to extend or retract to switch between the braking release state and the braking state by rotating action, in other embodiments, the brake member 6 can also be driven to extend or retract by pressing action to switch between the braking release state and the braking state. The structure for implementing the pressing action is known. For example, the pressing telescopic structure of the ball-point pen can be used for reference, that is, a combination structure consisting of a slider pressing member, a linear-rotary conversion member, a slider member and a spring is used to implement the pressing operation.
While the present invention has been described with respect to the typical embodiments, the present invention can also have a variety of other specific embodiments, and the technical solutions formed by the use of equivalent replacement or equivalent transformation all fall within the scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2023101597752 | Feb 2023 | CN | national |
