Self-locking mechanism and lifting table motor

Abstract

The utility model discloses a self-locking mechanism and a lifting table motor. The self-locking mechanism comprises a limiting part; and the friction ring is connected to the driving shaft in a sleeving mode, the friction ring is connected to the limiting part, the friction ring is of a spiral bent structure, and after the limiting part is fixed, the friction ring conducts clasping self-locking or loosening on the driving shaft through forward rotation or reverse rotation of the driving shaft. In the braking process, the friction ring is driven by the driving shaft to deform, the inner diameter is reduced, the driving shaft is tightly held by the inner side face of the friction ring, self-locking is achieved, noise in the using process can be lowered, mounting and dismounting are convenient, and using is stable and reliable.

Description

Technical Field

[0001] This utility model relates to a self-locking mechanism and a lifting table motor. Background Technology

[0002] When the push rod of the electric height-adjustable desk raises the tabletop, the height-adjustable desk motor on the bottom of the tabletop starts, driving the worm gear to rotate. The worm gear further drives the worm wheel to rotate, which in turn drives the lifting screw to rotate, causing the lifting screw to extend from the table leg seat, thereby obtaining the rising height of the tabletop. When the set height is reached, the height-adjustable desk motor stops working, serving as a height memory function or a limit function to prevent the lifting screw from dislodging from the table leg seat.

[0003] While worm gear structures possess a certain degree of self-locking capability, the load-bearing capacity of electric lifting tables is extremely limited by the self-locking mechanism alone, making it difficult to meet user needs.

[0004] In the existing technology, the self-locking device of the height-adjustable table motor has poor stability and self-locking effect, is prone to noise during use, and is not conducive to installation and disassembly. Utility Model Content

[0005] The purpose of this utility model is to provide a technical solution for a self-locking mechanism and a lifting table motor to address the shortcomings of the existing technology. During the braking process, the friction ring deforms under the drive shaft, reducing its inner diameter. The inner side of the friction ring grips the drive shaft, achieving self-locking. This not only reduces noise during use but also facilitates installation and disassembly, and ensures stable and reliable operation.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A self-locking mechanism, characterized in that: it includes

[0008] At least one limiting part;

[0009] The device includes at least one friction ring fitted onto the drive shaft. The friction ring is connected to a limiting part and has a spirally bent structure. When the limiting part is fixed, the friction ring can be locked or released by the forward or reverse rotation of the drive shaft. Through the design of the above structure, during braking, the friction ring deforms under the drive of the drive shaft, reducing its inner diameter. The inner surface of the friction ring then locks the drive shaft, achieving self-locking. This not only reduces noise during use but also facilitates installation and disassembly, ensuring stable and reliable operation.

[0010] Furthermore, the spiral bending structure can be a planar spiral bending from the outside to the inside along the same horizontal plane or a cylindrical spiral bending in the vertical direction, to meet the usage requirements of different occasions.

[0011] Furthermore, the starting end of the friction ring is connected to the side or end of the limiting part.

[0012] Furthermore, the thickness of the friction ring is less than the length of the limiting part.

[0013] Furthermore, the total length of the friction ring of the cylindrical spiral is equal to the length of the limiting part.

[0014] Furthermore, the side in contact with the drive shaft is provided with at least one oil groove and at least one protrusion. The oil groove is used to store lubricating grease, and the protrusion is used to increase the contact area between the friction ring and the drive shaft, increase friction, and enhance the self-locking effect.

[0015] Furthermore, the end of the friction ring is a free end, with an arc-shaped or flat structure.

[0016] Furthermore, the edges of the friction ring are either rounded or right-angled.

[0017] Furthermore, the limiting part and the friction ring are integrally formed, which facilitates the manufacturing and processing of the limiting part and the friction ring, reduces manufacturing costs, and improves the connection strength and stability between the limiting part and the friction ring.

[0018] A height-adjustable desk motor includes a housing and a drive shaft connected to the housing. Its distinguishing feature is that it further includes a self-locking mechanism as described above. The limiting part of the self-locking mechanism cooperates with the housing, and the friction ring of the self-locking mechanism is sleeved on the drive shaft. The friction ring locks or releases the drive shaft by rotating the drive shaft forward or backward. This height-adjustable desk motor not only improves the self-locking effect but also enhances the stability and reliability of the motor during operation and reduces noise.

[0019] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0020] 1. During the braking process, the friction ring deforms under the drive of the drive shaft, reducing its inner diameter. The inner side of the friction ring grips the drive shaft, achieving self-locking. This not only reduces noise during use but also facilitates installation and disassembly, ensuring stable and reliable operation.

[0021] 2. The lifting table motor of this utility model can not only improve the self-locking effect, but also improve the stability and reliability of the lifting table motor during operation and reduce noise. Attached image description:

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Figure 1 This is a rendering of the self-locking mechanism in Embodiment 1 of the present invention, which is a self-locking mechanism and a lifting table motor.

[0024] Figure 2for Figure 1 The main view;

[0025] Figure 3 for Figure 1 Top view;

[0026] Figure 4 This is a rendering of the self-locking mechanism in Embodiment 2 of this utility model;

[0027] Figure 5 for Figure 4 The main view;

[0028] Figure 6 for Figure 4 Top view;

[0029] Figure 7 This is a schematic diagram of the structure of the self-locking mechanism and the lifting table motor in the lifting table motor of this utility model.

[0030] In the figure: 1-Limiting part; 2-Friction ring; 3-Oil groove; 4-First end; 5-Chamfered corner; 6-Second end; 7-Outer shell; 8-Drive shaft; 9-Protrusion. Detailed Implementation

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0034] Example 1

[0035] like Figures 1 to 3 As shown, this utility model provides a self-locking mechanism, which includes a limiting part 1 and a friction ring 2 sleeved on the drive shaft 8.

[0036] The limiting part 1 and the friction ring 2 are integrally formed, which facilitates the manufacturing and processing of the limiting part 1 and the friction ring 2, reduces manufacturing costs, and improves the connection strength and stability between the limiting part 1 and the friction ring 2.

[0037] Friction ring 2 is connected to limiting part 1. The thickness of friction ring 2 is less than the length of limiting part 1. The starting end of friction ring 2 is connected to the middle of the side of limiting part 1. Limiting part 1 has a columnar structure, and the two ends of the columnar structure protrude from the top and bottom surfaces of friction ring 2, respectively.

[0038] The first end 4 of the friction ring 2 is a free end, and the first end 4 has an arc-shaped structure.

[0039] The friction ring 2 has a spiral bending structure, which is a planar spiral bending from the outside to the inside along the same horizontal plane to meet the usage requirements of different occasions.

[0040] The friction ring 2 has at least one oil groove 3 and at least one protrusion 9 on the side that contacts the drive shaft 8. This application uses three oil grooves 3 and one protrusion 9. The oil grooves 3 are used to store lubricating grease, and the protrusion 9 is used to increase the contact area between the friction ring 2 and the drive shaft 8, increase friction, and enhance the self-locking effect.

[0041] The edge of friction ring 2 is rounded with a chamfer 5.

[0042] Once the limiting part 1 is fixed, the friction ring 2 can be locked or released by the forward or reverse rotation of the drive shaft 8. Through the design of the above structure, during the braking process, the friction ring 2 deforms under the drive of the drive shaft 8, reducing its inner diameter. The inner side of the friction ring 2 then locks the drive shaft 8, achieving self-locking. This not only reduces noise during use but also facilitates installation and disassembly, ensuring stable and reliable operation.

[0043] Example 2

[0044] like Figures 4 to 6 As shown, this utility model provides a self-locking mechanism, which includes a limiting part 1 and a friction ring 2 sleeved on a drive shaft 8. The limiting part 1 and the friction ring 2 are integrally formed, which facilitates the manufacturing and processing of the limiting part 1 and the friction ring 2, reduces manufacturing costs, and improves the connection strength and stability between the limiting part 1 and the friction ring 2.

[0045] The friction ring 2 is connected to the limiting part 1, and the thickness of the friction ring 2 is less than the length of the limiting part 1.

[0046] The starting end of the friction ring 2 is connected to the end of the limiting part 1. The limiting part 1 has a columnar structure, and the top surface of the friction ring 2 is flush with the top or bottom surface of the limiting part 1.

[0047] The second end 6 of the friction ring 2 is a free end, and the second end 6 has a flat structure.

[0048] The friction ring 2 has a spiral bending structure, which is a cylindrical spiral bent in the vertical direction to meet the requirements of different applications. The total length H of the cylindrical spiral friction ring 2 is equal to the length of the limiting part 1.

[0049] The edge of friction ring 2 is a right angle.

[0050] Once the limiting part 1 is fixed, the friction ring 2 can be locked or released by the forward or reverse rotation of the drive shaft 8. Through the design of the above structure, during the braking process, the friction ring 2 deforms under the drive of the drive shaft 8, reducing its inner diameter. The inner side of the friction ring 2 then locks the drive shaft 8, achieving self-locking. This not only reduces noise during use but also facilitates installation and disassembly, ensuring stable and reliable operation.

[0051] like Figure 7 As shown, this utility model discloses a height-adjustable desk motor, including a housing 7 and a drive shaft 8 connected to the housing 7. It also includes a self-locking mechanism as described above. The limiting part 1 of the self-locking mechanism cooperates with the housing 7, and the friction ring 2 of the self-locking mechanism is sleeved on the drive shaft 8. The friction ring 2 locks or releases the drive shaft 8 by rotating the drive shaft forward or backward. This height-adjustable desk motor can not only improve the self-locking effect, but also improve the stability and reliability of the height-adjustable desk motor during operation and reduce noise.

[0052] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to achieve essentially the same technical effect are all covered within the protection scope of this utility model.

Claims

1. A self-locking mechanism, characterized by: The self-locking mechanism comprises at least one limiting part; and at least one friction ring sleeved on the driving shaft, the friction ring being connected to the limiting part, the friction ring being in a spiral bending structure, when the limiting part is fixed, the friction ring being capable of self-locking or loosening the driving shaft by forward rotation or reverse rotation of the driving shaft.

2. A self-locking mechanism according to claim 1, characterized in that: The spiral bending structure is a planar spiral bending structure spirally bending from the outside to the inside along the same horizontal plane or a cylindrical spiral bending structure spirally bending along the vertical direction.

3. A self-locking mechanism according to claim 2, wherein: The starting end of the friction ring is connected to the side or end of the limiting part.

4. A self-locking mechanism according to claim 2, wherein: The thickness of the friction ring is less than the length of the limiting part.

5. A self-locking mechanism according to claim 2, wherein: The total length of the friction ring of the cylindrical spiral bending structure is equal to the length of the limiting part.

6. A self-locking mechanism according to claim 2, wherein: The side of the friction ring in contact with the driving shaft is provided with at least one oil groove and at least one protrusion.

7. A self-locking mechanism according to claim 2, wherein: The end of the friction ring is a free end, the end being in a circular arc structure or a flat structure.

8. A self-locking mechanism according to claim 2, wherein: The edge of the friction ring is a circular arc chamfer or a right angle.

9. A self-locking mechanism according to claim 1, wherein: The limiting part and the friction ring are in an integral forming structure.

10. A lift table motor comprising a housing and a drive shaft connected to the housing, characterized by: The self-locking mechanism further comprises the self-locking mechanism according to any one of claims 1 to 9, the limiting part of the self-locking mechanism being matched with the shell, the friction ring of the self-locking mechanism being sleeved on the driving shaft, the friction ring being capable of self-locking or loosening the driving shaft by forward rotation or reverse rotation of the driving shaft.

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