Self-locking mechanism and lifting table motor

Abstract

The invention 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 reduced, mounting and dismounting are convenient, and using is stable and reliable.

Description

Technical Field

[0001] The invention relates to a self-locking mechanism and a lifting table motor. Background Art

[0002] When the push rod of the electric lift table raises the table top, the lift table motor on the bottom of the table top starts, driving the worm to rotate, and the worm further drives the worm wheel to rotate, and the worm wheel drives the lifting screw to rotate, so that the lifting screw extends from the table leg seat, thereby obtaining the rising height of the table top. When the set height is reached, the lift table motor stops working, which serves as a height memory function or a limit function to prevent the lifting screw from escaping from the table leg seat.

[0003] The worm gear structure has a certain self-locking ability, but the load-bearing capacity of the electric lifting table is extremely limited if it only relies on the self-locking produced by the worm gear structure, and it is difficult to meet user needs.

[0004] The self-locking device of the motor of the lifting table in the prior art has poor stability and self-locking effect, is prone to noise during use, and is not conducive to installation and disassembly. Summary of the invention

[0005] The purpose of the present invention is to provide a technical solution of a self-locking mechanism and a lifting table motor to address the deficiencies in the prior art. During the braking process, the friction ring is deformed under the drive of the drive shaft, so that the inner diameter is reduced, and the inner side of the friction ring clamps the drive shaft to achieve self-locking, which not only reduces the noise during use, but also facilitates installation and disassembly, and is stable and reliable when used.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

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

[0008] at least one limiting portion;

[0009] and at least one friction ring sleeved on the driving shaft, the friction ring is connected to the limiting part, and the friction ring has a spiral curved structure. When the limiting part is fixed, the friction ring can hold the driving shaft to self-lock or loosen through the forward or reverse rotation of the driving shaft. Through the design of the above structure, during the braking process, the friction ring is deformed under the drive of the driving shaft, so that the inner diameter is reduced, and the inner side of the friction ring holds the driving shaft to achieve self-locking, which can not only reduce the noise during use, but also facilitate installation and disassembly, and is stable and reliable during use.

[0010] Furthermore, the spiral bending structure is a plane spiral that is spirally bent from the outside to the inside along the same horizontal plane or a cylindrical spiral that is spirally bent along the vertical direction, which meets the use requirements of different occasions.

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

[0012] Furthermore, the thickness of the friction ring is smaller than the length of the limiting portion.

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

[0014] Furthermore, at least one oil groove and at least one protrusion are provided on the side in contact with the drive shaft. 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, and the end is an arc-shaped structure or a flat structure.

[0016] Furthermore, the edge of the friction ring is a circular chamfer or a right angle.

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

[0018] A motor for a lifting table comprises a shell and a driving shaft connected to the shell, and is characterized in that it also comprises a self-locking mechanism as described above, wherein the limiting portion of the self-locking mechanism cooperates with the shell, and the friction ring of the self-locking mechanism is sleeved on the driving shaft, and the friction ring holds the driving shaft to self-lock or loosen it through the forward or reverse rotation of the driving shaft; the motor for the lifting table can not only improve the self-locking effect, but also improve the stability and reliability of the motor for the lifting table during operation and reduce noise.

[0019] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0020] 1. In the braking process of the present invention, the friction ring is deformed under the drive shaft, so that the inner diameter is reduced, and the inner side of the friction ring is tightly clamped against the drive shaft to achieve self-locking, which can not only reduce the noise during use, but also facilitate installation and disassembly, and is stable and reliable during use.

[0021] 2. The lifting table motor of the present invention 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. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0025] Figure 3 is the top view of Figure 1 ;

[0026] Figure 4 is the effect diagram of the self-locking mechanism in Embodiment 2 of the present invention;

[0027] Figure 5 is the front view of Figure 4 ;

[0028] Figure 6 is the top view of Figure 4 ;

[0029] Figure 7 is the structural schematic diagram of a lifting table motor in a self-locking mechanism and a lifting table motor of the present invention.

[0030] In the figure: 1 - limiting part; 2 - friction ring; 3 - oil groove; 4 - first end; 5 - arc chamfer; 6 - second end; 7 - housing; 8 - drive shaft; 9 - protruding part. Specific Embodiment

[0031] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0033] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0034] Embodiment 1

[0035] As Figures 1 to 3 shown, a self-locking mechanism of the present invention includes a limiting part 1 and a friction ring 2 sleeved on a drive shaft 8.

[0036] The limiting part 1 and the friction ring 2 are of an integrally formed structure, which is convenient for the manufacturing and processing of the limiting part 1 and the friction ring 2, reduces the manufacturing cost, and improves the connection strength and stability between the limiting part 1 and the friction ring 2.

[0037] The friction ring 2 is connected to the limiting part 1. The thickness of the friction ring 2 is less than the length of the limiting part 1. The starting end of the friction ring 2 is connected to the middle of the side surface of the limiting part 1. The limiting part 1 has a columnar structure, and both ends of the columnar structure protrude from the top surface and the bottom surface of the 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, and the spiral bending structure is a planar spiral that spirally bends from the outside to the inside in the same horizontal plane, meeting the usage requirements in different scenarios.

[0040] On the side surface of the friction ring 2 in contact with the drive shaft 8, there are at least one oil groove 3 and at least one protrusion 9. In this application, three oil grooves 3 and one protrusion 9 are adopted. 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 strengthen the self-locking effect.

[0041] The edge of the friction ring 2 is an arc chamfer 5.

[0042] After the limiting part 1 is fixed, by rotating the drive shaft 8 forward or backward, the friction ring 2 can hold the drive shaft 8 tightly for self-locking or loosen it; through the design of the above structure, during the braking process, the friction ring 2 deforms under the drive of the drive shaft 8, causing the inner diameter to shrink. The inner side surface of the friction ring 2 holds the drive shaft 8 tightly to achieve self-locking, which can not only reduce the noise during use, but also facilitate installation and disassembly, and is stable and reliable during use.

[0043] Embodiment 2

[0044] As Figures 4 to 6 shown, a self-locking mechanism of the present invention includes a limiting part 1 and a friction ring 2 sleeved on the drive shaft 8. The limiting part 1 and the friction ring 2 are integrally formed structures, which facilitate the manufacturing and processing of the limiting part 1 and the friction ring 2, reduce the manufacturing cost, and improve 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 surface or the 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 is a spirally curved structure, which is a cylindrical spiral that is spirally curved in the vertical direction, meeting the use requirements of different occasions. 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 the friction ring 2 is a right angle.

[0050] When the limiting part 1 is fixed, the friction ring 2 can hold the driving shaft 8 and self-lock or loosen it through the forward or reverse rotation of the driving shaft 8. Through the design of the above structure, during the braking process, the friction ring 2 is deformed under the drive of the driving shaft 8, so that the inner diameter is reduced, and the inner side of the friction ring 2 holds the driving shaft 8 to achieve self-locking, which can not only reduce the noise during use, but also facilitate installation and disassembly, and is stable and reliable during use.

[0051] like Figure 7 As shown, a motor for a lifting table of the present invention comprises a housing 7 and a driving shaft 8 connected to the housing 7, and also comprises the self-locking mechanism as mentioned above, wherein the limiting portion 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 driving shaft 8, and the friction ring 2 can hold the driving shaft 8 for self-locking or loosening by the forward or reverse rotation of the driving shaft 8; the motor for the lifting table can not only improve the self-locking effect, but also improve the stability and reliability of the motor for the lifting table during operation and reduce noise.

[0052] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A self-locking mechanism, characterized in that: include at least one limiting portion; and at least one friction ring sleeved on the driving shaft, the friction ring being connected to the limiting portion, the friction ring being in a spirally curved structure, and when the limiting portion is fixed, the friction ring can clamp and self-lock or release the driving shaft through forward or reverse rotation of the driving shaft.

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

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

4. A self-locking mechanism according to claim 2, characterized in that: The thickness of the friction ring is smaller than the length of the limiting portion.

5. A self-locking mechanism according to claim 2, characterized in that: The total length of the friction ring of the cylindrical spiral is equal to the length of the limiting portion.

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

7. The self-locking mechanism according to claim 2, characterized in that: The end of the friction ring is a free end, and the end is in an arc-shaped structure or a flat structure.

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

9. The self-locking mechanism according to claim 1, wherein: The limiting portion and the friction ring are an integrally formed structure.

10. A lifting table motor, comprising a housing and a drive shaft connected to the housing, characterized in that: It also includes a self-locking mechanism as described in any one of claims 1 to 9, the limiting portion of the self-locking mechanism cooperates with the housing, the friction ring of the self-locking mechanism is sleeved on the drive shaft, and the friction ring can tighten and self-lock or loosen the drive shaft through the forward or reverse rotation of the drive shaft.

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