Gear box assembly and lifting table leg thereof

Abstract

The utility model discloses a gear box assembly and a lifting table leg thereof, the gear box assembly comprises a screw rod, a brake seat and a brake spring, the brake seat is fixedly installed on the screw rod, the brake spring is sleeved on the brake seat, one end of the brake spring is fixed on the brake seat, and the other end of the brake spring is fixedly arranged; the tightness degree of the brake spring is changed by rotating the lead screw and the brake seat, and when the brake spring is in a tightened state, brake force is formed. The brake seat and the brake spring are installed on the lead screw, brake force can be formed when the brake spring is in a tightened state, the buffer function is achieved, and clamping injury and collision are prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of transmission mechanisms, and in particular to a gearbox assembly and its lifting table legs. Background Technology

[0002] In current technology, the lifting of adjustable table legs is achieved through lead screws. However, if the lead screws are directly driven by a drive unit, the lifting speed is too fast. At the end of the lifting process, a violent collision due to inertia may occur, which may cause pinching injuries and damage to the table body. Utility Model Content

[0003] To address the aforementioned problems with existing lead screw drives, this invention aims to provide a gearbox assembly and its lifting table legs. A brake seat and brake spring are installed on the lead screw, which can generate braking force when the brake spring is tightened, providing a buffering effect and preventing pinching and collision.

[0004] The specific technical solution is as follows:

[0005] A gearbox assembly includes: a lead screw, a brake seat, and a brake spring. The brake seat is fixedly mounted on the lead screw, and the brake spring is sleeved on the brake seat. One end of the brake spring is fixed to the brake seat, and the other end of the brake spring is fixedly disposed.

[0006] Specifically, by rotating the lead screw and the brake seat, the tension of the brake spring is changed, and when the brake spring is tightened, braking force is generated.

[0007] The aforementioned gearbox assembly further includes: two meshing gears, one end of which is fixedly connected to one of the gears;

[0008] The two gears rotate to cause the lead screw to rotate.

[0009] The aforementioned gearbox assembly further includes: a gearbox body, wherein one end of the two gears, the brake seat, the brake spring, and the lead screw are all disposed within the gearbox body, the other end of the lead screw extends out of the gearbox body, and the other end of the brake spring is fixed to the gearbox body.

[0010] In the aforementioned gearbox assembly, both gears are helical gears;

[0011] The central axes of the two gears are perpendicular to each other and not aligned with each other.

[0012] In the aforementioned gearbox assembly, each of the gears is rotatably engaged with the gearbox body via a bearing;

[0013] The gearbox has a limiting groove, and the other end of the brake spring is fixed in the limiting groove.

[0014] The gearbox assembly described above, wherein the gearbox body comprises: two housings, the two housings being fixedly connected by a plurality of fasteners;

[0015] A receiving space is formed between the two housings, and one end of the two gears, the brake seat, the brake spring, and the lead screw are all disposed within the receiving space;

[0016] One of the gears has two ends that are rotatably engaged with the two housings via bearings, and each end of the other gear is rotatably engaged with the two housings via bearings.

[0017] Each of the housings has a slot, and the slots of the two housings are arranged correspondingly to form the limiting groove;

[0018] The other end of the lead screw extends between the two housings.

[0019] In the aforementioned gearbox assembly, the gears are made of plastic.

[0020] A height-adjustable table leg, comprising a gearbox assembly as described above, further comprising: a lead screw nut and a transmission rod, wherein the lead screw nut is located outside the gearbox and is threadedly connected to the lead screw, wherein one of the gears is connected to the lead screw and the other gear is connected to the transmission rod;

[0021] The lead screw nut is located below the gearbox body;

[0022] The central axis of the transmission rod is perpendicular to the central axis of the lead screw.

[0023] The aforementioned height-adjustable table legs also include an inner tube, which is located outside the lead screw, and the upper end of the inner tube is connected to the lead screw nut.

[0024] The aforementioned height-adjustable table legs further include: an outer tube, wherein the gearbox assembly and the inner tube are both disposed within the outer tube, and the gearbox body, the lead screw nut, and the inner tube are all laterally confined within the outer tube;

[0025] The transmission rod extends laterally through the outer tube and the gearbox body.

[0026] The positive effects of the above technical solution compared with the existing technology are:

[0027] This invention installs a brake seat and a brake spring on the lead screw, which can generate braking force when the brake spring is tightened, thus having a buffering effect and preventing pinching and collision. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a gearbox assembly according to the present invention;

[0029] Figure 2 This is a structural cross-sectional view of a gearbox assembly according to the present invention;

[0030] Figure 3 This is a structural cross-sectional view of a gearbox assembly according to the present invention;

[0031] Figure 4 This is a schematic diagram of the lead screw in a gearbox assembly according to the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of a height-adjustable table leg according to the present invention;

[0033] Figure 6 This is a structural cross-sectional view of a height-adjustable table leg according to the present invention;

[0034] Figure 7 This utility model relates to a height-adjustable table leg. Figure 6 A magnified view of a portion of the image;

[0035] In the attached diagram: 1. Lead screw; 2. Brake seat; 3. Brake spring; 4. Gear; 5. Gearbox body; 6. Bearing; 7. Housing; 8. Slot; 9. Top cover; 10. Gearbox assembly; 11. Lead screw nut; 12. Transmission rod; 13. Inner tube; 14. Outer tube; 15. Gear mounting part; 16. Brake mounting part; 17. Nut mounting part. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0037] like Figures 1 to 4 As shown, a gearbox assembly 10 of a preferred embodiment is illustrated, including: a lead screw 1, a brake seat 2, and a brake spring 3. The brake seat 2 is fixedly mounted on the lead screw 1, and the brake spring 3 is sleeved on the brake seat 2. One end of the brake spring 3 is fixed to the brake seat 2, and the other end of the brake spring 3 is fixedly disposed.

[0038] The tension of the brake spring 3 is changed by rotating the lead screw 1 and the brake seat 2. When the brake spring 3 is tightened, braking force is generated.

[0039] This utility model installs a brake seat 2 and a brake spring 3 on the lead screw 1, which can generate braking force when the brake spring 3 is tightened, and has a buffering effect to prevent pinching and collision.

[0040] Furthermore, as a preferred embodiment, the gearbox assembly 10 further includes two meshing gears 4, with one end of the lead screw 1 fixedly connected to one of the gears 4.

[0041] Furthermore, as a preferred embodiment, the two gears 4 rotate to cause the lead screw 1 to rotate.

[0042] Furthermore, as a preferred embodiment, the gearbox assembly 10 further includes: a gearbox body 5, two gears 4, a brake seat 2, a brake spring 3, and one end of a lead screw 1 are all disposed inside the gearbox body 5, the other end of the lead screw 1 extends out of the gearbox body 5, and the other end of the brake spring 3 is fixed to the gearbox body 5.

[0043] Furthermore, as a preferred embodiment, both gears 4 are helical gears.

[0044] Furthermore, as a preferred embodiment, the central axes of the two gears 4 are perpendicular to each other.

[0045] Furthermore, in a preferred embodiment, each gear 4 is rotatably engaged with the gearbox 5 via a bearing 6.

[0046] Furthermore, as a preferred embodiment, the gearbox 5 has a limiting groove, and the other end of the brake spring 3 is fixed in the limiting groove.

[0047] Furthermore, as a preferred embodiment, the gearbox body 5 includes two housings 7, which are fixedly connected by a plurality of fasteners.

[0048] Furthermore, in a preferred embodiment, an accommodating space is formed between the two housings 7, and one end of the two gears 4, brake seat 2, brake spring 3, and lead screw 1 are all disposed within the accommodating space.

[0049] Furthermore, as a preferred embodiment, one end of one gear 4 is rotatably engaged with two housings 7 via bearings 6, and each end of the other gear 4 is rotatably engaged with two housings 7 via bearings 6.

[0050] Furthermore, as a preferred embodiment, each housing 7 is provided with a slot 8, and the slots 8 of the two housings 7 are correspondingly provided to form a limiting groove.

[0051] Furthermore, as a preferred embodiment, the other end of the lead screw 1 extends from between the two housings 7.

[0052] Furthermore, as a preferred embodiment, the gear 4 is made of plastic.

[0053] Furthermore, the lead screw 1 is inserted into the brake seat 2.

[0054] Furthermore, the lead screw 1 includes, from top to bottom, a gear mounting part 15, a brake mounting part 16, and a nut mounting part 17. The gear mounting part 15 has a hexagonal prism structure, the brake mounting part 16 has a waist-shaped column structure, and the outer wall of the nut mounting part 17 has threads.

[0055] A gear 4 is mounted on the gear mounting part 15, a brake seat 2 is mounted on the brake mounting part 16, and a lead screw nut 11 is mounted on the nut mounting part 17.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0057] Based on the above, this utility model also has the following embodiments:

[0058] For further embodiments of this utility model, please refer to... Figures 5 to 7 As shown, a height-adjustable table leg is illustrated, including a gearbox assembly 10, and further including a lead screw nut 11 and a transmission rod 12. The lead screw nut 11 is located outside the gearbox body 5 and is threadedly connected to the lead screw 1. One gear 4 is connected to the lead screw 1, and the other gear 4 is connected to the transmission rod 12.

[0059] In a further embodiment of this utility model, the lead screw nut 11 is located below the gearbox body 5.

[0060] In a further embodiment of this utility model, the central axis of the transmission rod 12 is perpendicular to the central axis of the lead screw 1.

[0061] In a further embodiment of the present invention, the lifting table leg further includes an inner tube 13, which is located outside the lead screw 1, and the upper end of the inner tube 13 is connected to the lead screw nut 11.

[0062] In a further embodiment of the present invention, the lifting table leg further includes: an outer tube 14, a gearbox assembly 10 and an inner tube 13, all of which are disposed inside the outer tube 14, and the gearbox body 5, the lead screw nut 11 and the inner tube 13 are all laterally confined within the outer tube 14.

[0063] In a further embodiment of this utility model, the transmission rod 12 extends laterally through the outer tube 14 and the gearbox body 5.

[0064] Furthermore, both the inner tube 13 and the outer tube 14 are designed with a quadrangular prism structure.

[0065] Furthermore, the top of the outer tube 14 is provided with a top cover 9.

[0066] The height-adjustable table legs of this application have a compact and stable structure.

[0067] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gearbox assembly, characterized by, The application relates to a gear box assembly. The gear box assembly comprises a screw rod, a brake seat and a brake spring, the brake seat is fixedly arranged on the screw rod, the brake spring is sleeved on the brake seat, one end of the brake spring is fixed on the brake seat, and the other end of the brake spring is fixedly arranged. The tightness of the brake spring is changed by rotating the screw rod and the brake seat, and brake force is formed when the brake spring is in a tight state.

2. The gearbox assembly of claim 1, wherein, The gear box assembly further comprises two gears which are in engagement with each other, and one end of the screw rod is fixedly connected to one of the gears. The two gears rotate to rotate the screw rod. The gear box assembly further comprises a gear box body, and the two gears, the brake seat, the brake spring and one end of the screw rod are arranged in the gear box body.

3. The gearbox assembly of claim 2, wherein, The other end of the screw rod extends out of the gear box body, and the other end of the brake spring is fixed to the gear box body. The two gears are helical gears.

4. The gearbox assembly of claim 3, wherein, The central axes of the two gears are vertically arranged on different planes. Each gear is rotatably connected to the gear box body through a bearing.

5. The gearbox assembly of claim 3, wherein, The gear box body is provided with a limiting groove, and the other end of the brake spring is fixed in the limiting groove. The gear box body comprises two housings which are fixedly connected through a plurality of fasteners.

6. The gearbox assembly of claim 5, wherein, The two housings form an accommodating space, and the two gears, the brake seat, the brake spring and one end of the screw rod are arranged in the accommodating space. The two ends of one of the gears are rotatably connected to the two housings through the bearings, and each end of the other gear is rotatably connected to the two housings through the bearings. Each of the housings is provided with a clamping groove, and the clamping grooves of the two housings are correspondingly arranged and form the limiting groove. The other end of the screw rod extends out of the two housings. The gears are made of plastic.

7. The gearbox assembly of claim 3, wherein, The gear box assembly further comprises a screw rod nut and a transmission rod, the screw rod nut is arranged outside the gear box body and is threadedly connected with the screw rod, one of the gears is connected with the screw rod, and the other gear is connected with the transmission rod.

8. A lift table leg characterized by, The screw rod nut is arranged below the gear box body. The central axis of the transmission rod is vertically arranged on a different plane from the central axis of the screw rod. The gear box assembly further comprises an inner tube, and the inner tube is arranged outside the screw rod and has an upper end connected with the screw rod nut.

9. The lift table leg according to claim 8, wherein The gear box assembly further comprises an outer tube, and the gear box assembly and the inner tube are arranged in the outer tube, and the gear box body, the screw rod nut and the inner tube are transversely limited in the outer tube. The transmission rod transversely penetrates the outer tube and the gear box body.

10. The lift table leg according to claim 9, wherein ​ ​ ​

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