CN-122014832-A - Multidirectional transmission gear box

Abstract

The invention provides a multidirectional transmission gear box which comprises a box body, wherein a main gear is rotatably arranged in the box body, at least two side gears are arranged at intervals and are meshed with the main gear, at least two side gear axes are staggered, the outer side sections of the side gears are supported by the box body, stabilizing pieces are arranged on the inner sides of the side gears and are in circumferential static connection with the box body, the side gears and the stabilizing pieces are directly or indirectly coupled and relatively rotate, the stabilizing pieces play a supporting role on the inner sides of the side gears and limit radial shaking of the side gears, the main gear is used as a main transmission piece and can drive all gears to synchronously rotate, the azimuth layout and staggered axis design of the side gears are combined, so that transmission rods connected with the side gears face different directions, multidirectional transmission is realized, rich combination forms are provided for lifting tables and other applications, double-side limit support is formed between the box body and the stabilizing pieces, transmission stability of the side gears is guaranteed, transmission noise is reduced, the stabilizing pieces can also limit rotation of the stabilizing pieces, torsion applied to the transmission rods is eliminated, and the overall stability is further improved.

Inventors

• CHENG JIA
• SHI YIMING

Assignees

• 永艺家具股份有限公司

Dates

Publication Date

20260512

Application Date

20260114

Claims (20)

1. 1. A multidirectional transmission gear box is characterized by comprising a box body, wherein a main gear is arranged in the box body, the main gear is rotatably arranged in the box body, at least two side gears which are rotatably arranged are further arranged in the box body, adjacent side gears are arranged at intervals and are meshed with the main gear, at least two axes of the side gears are arranged in a staggered mode, the outer side section of each side gear is supported by the box body, a stabilizing piece is arranged on the inner side of each side gear and is directly or indirectly coupled with the stabilizing piece, the side gears and the stabilizing piece are rotatably arranged relatively, the stabilizing piece is fixedly connected in the box body in the circumferential direction, and the stabilizing piece is configured to support the side gears at the inner side ends of the side gears and limit the side gears to shake along the radial direction of the stabilizing piece.
2. 2. A multi-directional transmission gearbox according to claim 1 wherein the outer end of each side gear is provided with a side bearing by which the side gears are connected to the housing.
3. 3. The multi-directional transmission gearbox as set forth in claim 2, wherein the side gears include outer extending portions extending outward of the gearbox, the outer extending portions being cylindrical, the side bearing members being sleeved on the outer extending portions, the outer extending portions being provided with transmission insertion holes configured for insertion of the transmission rods on the side gears.
4. 4. A multidirectional transmission gearbox according to claim 2 or 3, wherein the side bearing member is a plain bearing, and the side bearing member is provided with lubrication grooves.
5. 5. The multi-way drive gearbox as set forth in claim 4, wherein the housing defines a circumferential groove and the side bearing is disposed in the circumferential groove.
6. 6. The multi-directional transmission gearbox as set forth in claim 5, wherein the gearbox body comprises an upper half and a lower half, wherein the upper half is provided with an upper half ring groove, the lower half is provided with a lower half ring groove, the upper half and the lower half are connected through screws, and after the upper half ring groove and the lower half ring groove are connected, the upper half ring groove and the lower half ring groove are spliced into the ring groove.
7. 7. The multi-directional transmission gearbox as set forth in claim 1, wherein the stabilizing members comprise stabilizing portions of the same number as the side gears, the stabilizing portions are oriented in the same direction and coaxial with the axial direction of the corresponding side gears, and the stabilizing portions are in plug-in fit with the side gears.
8. 8. A multidirectional transmission gearbox according to claim 7 wherein the side gears are four in number, each side gear being arranged in the circumferential direction of the main gear and each side gear facing in a different direction, respectively, and the stabilizer is cross-shaped and has four stabilizers.
9. 9. A multidirectional transmission gear box according to claim 7, wherein the side gear comprises an inner extension part extending into the box body, the inner extension part is in plug-in fit with the stabilizing part, one of the inner extension part and the stabilizing part is provided with a circular groove, and the other is a cylinder with the diameter equal to that of the circular groove.
10. 10. A multidirectional transmission gear box according to claim 7 wherein the side gears are connected with a transmission rod, the end part of the transmission rod positioned in the box body exceeds the side gears and is connected with the stabilizing part in an inserting mode, one of the end part and the stabilizing part is provided with a round groove, and the other end part and the stabilizing part are cylinders with the diameters equal to the diameters of the round grooves.
11. 11. A multidirectional transmission gearbox according to claim 7 wherein the side gears are three in total and the stabilizer is T-shaped and has three stabilizers.
12. 12. A multidirectional transmission gearbox according to claim 7 wherein there are two side gears and the stabilizer is L-shaped and has two stabilizers.
13. 13. The multi-way drive gear box according to claim 7, wherein the stabilizing part is sleeve-shaped, a lubrication groove is formed in the inner wall of the stabilizing part, a baffle is arranged at the inner end of the stabilizing part, and the baffle is configured to block the side gear along the axial direction of the side gear.
14. 14. The multi-directional transmission gearbox as set forth in claim 1, wherein the housing comprises an upper half and a lower half, the upper half and the lower half being connected by screws, the main gear being disposed in the lower half, and the side gears being disposed between the upper half and the lower half.
15. 15. A multi-directional transmission gearbox as set forth in claim 14 wherein the main gear is connected to a rotating member having a main bearing member thereon, the rotating member having a rotating bearing member thereon, the main bearing member and the rotating bearing member being mounted in the lower half.
16. 16. A multi-way drive gearbox according to claim 15 wherein the main bearing member and the rotational bearing member are received in the lower half from above and below the lower half, respectively.
17. 17. A multi-way drive gearbox according to claim 1 or 7 or 14 characterised in that the stabilizing member is integrally formed with the housing.
18. 18. A multidirectional transmission gear box according to claim 1, 7 or 14, wherein the stabilizer is in plug-in fit with the box body, a protruding rotation limiting rod is arranged on the stabilizer or the box body, a rotation limiting hole is arranged on the other one of the stabilizer or the box body, and the rotation limiting rod is inserted in the rotation limiting hole and configured to limit rotation of the stabilizer relative to the box body.
19. 19. The multi-way drive gearbox of claim 18 wherein the rotation limiting rod is a hexagonal rod and the rotation limiting aperture is a hexagonal slot.
20. 20. A multidirectional transmission gear box according to claim 1, wherein the stabilizing member is provided separately from the main gear, and the main gear is mounted at a lower end position in the box body, and the stabilizing member is mounted at an upper end position in the box body.

Description

Multidirectional transmission gear box Technical Field The invention relates to the field of movable furniture, in particular to a multidirectional transmission gear box. Background With the improvement of the life quality of people, the requirements of consumers on furniture are also higher, besides beauty, comfort, functionality and health become core considerations of purchasing choices, and in this background, more and more furniture products depend on mechanical transmission parts to realize better comfort, more functionality and concepts of healthy office and healthy life. The multi-station single-motor lifting table is characterized in that a single-motor lifting table with multiple positions is designed according to office scenes, namely, one lifting table is integrated with multiple table tops for multiple people, the shape of the single-motor lifting table is L-shaped, T-shaped or cross-shaped, more appearance choices are provided for consumers due to attractive considerations, and the single-motor lifting table with four table feet is also available for the consumers, and synchronous driving of the single motor to the multiple table legs is realized through a transmission system. The multi-directional gear box for the existing lifting table is improved by a one-way transmission gear box, wherein the one-way transmission gear box is provided with a main gear and a side gear, the main gear is used for connecting a screw rod of a lifting upright post, the side gear is used for connecting a transmission rod, the transmission rod is used for connecting two lifting upright posts on two sides in a transmission way in a single-motor lifting table of the one-way transmission gear box, and a motor is arranged on the transmission rod, so that the two lifting upright posts are driven to lift by a single motor at the same time. In the one-way transmission gear box, the side gears are arranged on one sleeve member, the sleeve member enables the side gears to transversely span the box body of the gear box, and at least two supporting limiting points are arranged on the side gears, so that the stability of the axes of the side gears can be maintained, and the radial movement of the side gears can be prevented. In the multi-station single-motor lifting table and the four-table-foot single-motor lifting table, the directions of the transmission rods are required to be changed, and the included angle between the two transmission rods is not equal to 180 degrees, so that the table feet can be turned to different directions, but the existing multi-direction transmission gear box is only based on the unidirectional transmission gear box, a side gear is newly added in the other direction, such as the direction perpendicular to the axis of the original side gear, for example, the Chinese patent application with the patent number of CN201922262474.4 and the Chinese patent application with the patent number of CN202322817558.6, the biggest problem of the multi-direction transmission gear box is that the newly added side gear is supported on only one side, the problem of radial movement easily occurs, noise can occur during transmission, the transmission instability can be further caused, the acting force generated by movement can wear the transmission rod or cause other adverse effects, and the service life of the transmission rod is shortened. In addition, although small parts of products are used in gear boxes of lifting tables to realize multidirectional transmission and give a plurality of side gears to support, the radial limiting capability of the gear boxes on a transmission rod is not outstanding, and when a main gear rotates, the side gears tend to rotate around the main gear. Disclosure of Invention The invention provides a multidirectional transmission gear box, which comprises a box body, wherein a main gear is rotationally arranged in the box body, at least two side gears are arranged at intervals and are meshed with the main gear, at least two side gear axes are staggered, the outer side sections of the side gears are supported by the box body, a stabilizing piece is arranged on the inner side of the side gears and is in circumferential static connection with the box body, the side gears and the stabilizing piece are directly or indirectly coupled and relatively rotated, the stabilizing piece plays a supporting role on the inner side ends of the side gears and limits radial shaking of the side gears, the main gear is used as a main transmission piece and can drive all gears to synchronously rotate, the azimuth layout and staggered axis design of the side gears are combined, so that transmission rods connected with the side gears face different directions to realize multidirectional transmission, a rich combination mode is provided for lifting tables and other applications, double-side limiting support is formed between the box body and the stabilizing piece, transmission noise is reduced, the stabilizing pie