Damping mechanism of driving system

Abstract

The utility model discloses a damping mechanism of a driving system. The damping mechanism comprises a shell, a rotating shaft, a rotating gasket and a pressure device, one end of the rotating shaft penetrates through the shell and is rotationally matched with the shell; a brake layer is arranged in the shell; the pressure device comprises an end cover and an elastic component; the rotating gasket is arranged between the braking layer of the shell and the end cover, the rotating shaft penetrates through the rotating gasket and rotates synchronously, and the elastic component can bias the end cover and the rotating gasket towards the braking layer of the shell. According to the damping mechanism of the driving system, adjustability and stability of a damping force value are guaranteed, and the damping mechanism is simple in structure and easy to assemble.

Description

Technical Field

[0001] The utility model relates to the field of drive damping, in particular to a damping mechanism of a drive system. Background Art

[0002] Among the current technical solutions, the damper structure used is as follows Figure 1 、 Figure 2 shown.

[0003] like Figure 1 The damper structure shown is composed of a first gasket 102, a second gasket 103, and a first gasket 102. This combined structure generates different frictional resistances by adjusting the tightness of the threaded end cover 105 to squeeze the spring 104. The frictional resistance between the gaskets generated by pressure in this structure has limitations such as a small resistance adjustment range, difficulty in controlling the friction force of the gasket parts, and large fluctuations.

[0004] like Figure 2 The damper structure shown here consists of a first gasket 1', a friction plate 2', a second gasket 3', a friction plate 2', and a first gasket 1' arranged in sequence. This combined structure generates varying frictional resistance by adjusting the tightness of the threads on the end cap 12', which compresses the spring 10'. This structure ensures a stable frictional resistance through the friction plates, ensuring a wide adjustment range and stability of the friction force. However, the structure and installation process are more complex. Utility Model Content

[0005] The purpose of the utility model is to provide a damping mechanism of a driving system, which ensures the adjustability and stability of the damping force value and has a simple structure and is easy to assemble.

[0006] To achieve the above-mentioned purpose, the utility model provides a damping mechanism of a drive system, comprising a housing, a rotating shaft, a rotating gasket and a pressure device; one end of the rotating shaft passes through the housing and the two rotate in conjunction; a braking layer is arranged inside the housing; the pressure device comprises an end cover and an elastic component; the rotating gasket is arranged between the braking layer and the end cover of the housing, the rotating shaft passes through the rotating gasket and the two rotate synchronously, and the elastic component can bias the end cover and the rotating gasket toward the braking layer of the housing.

[0007] As a further improvement of the present invention, a rotating gasket connecting hole is provided in the middle of the rotating gasket, and the rotating shaft passes through the rotating gasket connecting hole of the rotating gasket and the two can rotate synchronously.

[0008] As a further improvement of the present invention, the edge of the rotating gasket connecting hole is provided with an internal spline arranged in a ring shape, and the outer wall of the rotating shaft is provided with an external spline arranged in a ring shape, and the external spline of the rotating shaft is snap-fitted with the internal spline of the rotating gasket connecting hole.

[0009] As a further improvement of the present invention, the elastic component is a spring.

[0010] As a further improvement of the present invention, a shell through hole is provided in the middle of one end of the shell, the rotating shaft passes through the shell through hole and the two are rotatably matched.

[0011] As a further improvement of the present invention, a plurality of housing mounting holes for connecting to the bearing seat are provided on the outer side of the housing.

[0012] As a further improvement of the present invention, the end cover is provided with an end cover inner cavity, one end of the elastic component extends into the end cover inner cavity of the end cover and contacts its bottom; an end cover through hole is provided in the middle of one end of the end cover.

[0013] As a further improvement of the present invention, it further comprises a tension adjusting piece, wherein the tension adjusting piece, the elastic component and the end cover are arranged axially in sequence; the tension adjusting piece is in the shape of a cover and is threadedly connected to one end of the housing.

[0014] As a further improvement of the present invention, the number of the rotating gaskets is at least two and they are arranged axially in sequence along the rotating axis, a sliding gasket is provided between adjacent rotating gaskets, the sliding gasket and the outer shell are axially slidingly matched, and the rotating axis passes through the through hole in the middle of the sliding gasket; a second braking layer is provided on the end face of the sliding gasket adjacent to the rotating gasket; the end cover is in contact with the rotating gasket farthest from the braking layer.

[0015] As a further improvement of the present invention, the brake layer is made of carbon fiber; the rotating gasket is made of ferrosilicon with a surface roughness of Rz3.2; the dynamic friction coefficient between the brake layer and the rotating gasket is greater than 0.42, and the static friction coefficient between the two is greater than 0.63.

[0016] Beneficial effects

[0017] Compared with the prior art, the damping mechanism of the drive system of the utility model has the following advantages:

[0018] 1. The elastic component is biased by an external force. This biasing force is transmitted to the end cap and rotating washer, causing the rotating washer to be biased toward the braking surface of the housing. Due to the certain friction coefficient of the braking surface of the housing, the biasing force creates a certain system resistance, thereby generating a braking force on the rotating shaft. The elastic component's tension adjustment piece can adjust the external force applied to the elastic component, thereby adjusting the pressure applied to the rotating washer, thereby achieving the purpose of adjusting the system resistance of the damping mechanism.

[0019] 2. A braking layer is provided on the inner side of the outer shell, eliminating the original friction plate. This avoids the friction plate from idling inside due to too little friction or the friction plate from breaking or deforming due to excessive pressure, while ensuring the stable provision of system resistance. The overall structure is simpler and easier to assemble.

[0020] The present invention will become more clear through the following description in conjunction with the accompanying drawings, which are used to explain embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 An exploded view of one of the damper structures in the background art;

[0023] Figure 2 This is an exploded view of the second damper structure in the background technology;

[0024] Figure 3 An exploded view of the damping mechanism of the drive system of Example 1;

[0025] Figure 4 is a perspective view of the housing of Example 1;

[0026] Figure 5 is a cross-sectional view of the housing of Example 1;

[0027] Figure 6 is a three-dimensional diagram of the end cap of Example 1;

[0028] Figure 7 is a cross-sectional view of the end cap of Example 1;

[0029] Figure 8 is a cross-sectional view of the damping mechanism of the drive system of Example 1;

[0030] Figure 9 A cross-sectional view of the coordination between the damping mechanism of the drive system and the tension adjustment member of the elastic component;

[0031] Figure 10 This is a cross-sectional view of the damping mechanism of the drive system of Example 2. DETAILED DESCRIPTION

[0032] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0033] Example 1

[0034] like Figures 3 to 9 As shown, this embodiment provides a damping mechanism for a drive system, comprising a housing 1, a rotating shaft 3, a rotating gasket 2, and a pressure device. One end of the rotating shaft 3 passes through the housing 1 and the two are rotated together, and a brake layer 8 is provided in the housing 1. The pressure device comprises an end cover 4 and an elastic component. The rotating gasket 2 is provided between the brake layer 8 of the housing 1 and the end cover 4. The rotating shaft 3 passes through the rotating gasket 2 and the two rotate synchronously. The elastic component can bias the end cover 4 and the rotating gasket 2 toward the brake layer 8 of the housing 1. Based on the design of this structure, the adjustability and stability of the damping force value of the damping mechanism are effectively guaranteed, and the structure is simple and easy to assemble.

[0035] A shell through hole 7 is provided in the middle of one end of the shell 1, and one end of the rotating shaft 3 passes through the shell through hole 7 of the shell 1 and the two are rotated together. In this embodiment, a brake layer 8, a rotating gasket 2, an end cover 4 and an elastic component are provided in the axial direction in sequence in contact with each other in the shell 1. The brake layer 8 is provided on the bottom surface inside the shell 1, and the rotating gasket 2 is connected to the rotating shaft 3. The end of the elastic component away from the end cover 4 extends out of the shell 1. The shell 1 can protect the rotating shaft 3, the rotating gasket 2 and the pressure device located in its inner cavity. The outer side of the shell 1 is provided with at least two shell mounting holes 6 for connecting to the bearing seat, so that the damping mechanism of the drive system is connected and fixed to the bearing seat as a whole through the shell 1. The end of the rotating shaft 3 located outside the shell 1 is used to connect to the drive system.

[0036] When the rotating shaft 3 rotates, the rotating gasket 2 is driven to rotate synchronously, and the connection structure between the rotating gasket 2 and the rotating shaft 3 enables the two to slide relative to each other along the axial direction.

[0037] In this embodiment, a rotary gasket connection hole 9 is provided in the middle of the rotary gasket 2. The edge of the rotary gasket connection hole 9 is provided with an annular arrangement of internal splines. The outer wall of the rotary shaft 3 is provided with an annular arrangement of external splines. The rotary shaft 3 passes through the rotary gasket connection hole 9, and the external splines of the rotary shaft 3 engage with the internal splines of the rotary gasket connection hole 9.

[0038] Braking layer 8 is made of carbon fiber, while rotating pad 2 is made of ferrosilicon with a surface roughness of Rz3.2. The dynamic coefficient of friction between braking layer 8 and rotating pad 2 is greater than 0.42, and the static coefficient of friction between them is greater than 0.63, ensuring sufficient and stable frictional resistance when subjected to axial biasing forces in the system.

[0039] The elastic component of the pressure device presses the end cover 4 toward the rotating gasket 2 through its own elastic force, driving the adjacent end faces of the rotating gasket 2 and the brake layer 8 to contact each other. The greater the pressure between the rotating gasket 2 and the brake layer 8, the greater the friction force when the two rotate relative to each other.

[0040] Specifically, the end cap 4 is provided with an inner cavity 11, and one end of the elastic member extends into the inner cavity 11 of the end cap 4 and contacts the bottom thereof. The bottom of the end cap 4 is concave and has an end cap through hole 10 in the middle. The shape of the inner cavity 11 of the end cap is the same as that of the elastic member and can be connected to the elastic member.

[0041] In this embodiment, the elastic component is a spring 5. Figure 9 As shown, the tension adjusting member 12 of the spring 5 is in the shape of a cover and can be threadedly connected to one end of the housing 1. The end of the spring 5 away from the end cover 4 is in contact with the tension adjusting member 12, so that the pressure can be adjusted by the depth to which the tension adjusting member 12 is screwed into one end of the housing 1.

[0042] Alternatively, the tension adjustment member 12 may be a hollow boss shaft, the hollow portion of which allows the rotating shaft 3 to pass through. A limiting surface is provided to restrict the position of the boss shaft, so that the boss shaft fits against the bottom surface of the housing 1 and the boss surface contacts the spring 5. The height of the boss shaft can be adjusted to adjust the insertion depth to achieve the purpose of adjusting the pressure of the spring 5. Alternatively, the pitch of the spring 5 can be adjusted. During assembly, after the end surface of the housing 1 (the elastic component side) contacts the plane of the component to which it is connected, the adjustment is achieved by compressing the spring 5 at a certain pitch.

[0043] When the spring 5 is subjected to axial biasing force, the biasing force is transmitted to the rotating gasket 2 and the end cover 4 located inside the housing 1 through the elasticity of the spring 5 itself, so that the rotating gasket 2 contacts the brake layer 8 of the housing 1 and is pressed tightly to generate friction. The rotating shaft 3 passes through the housing 1, the rotating gasket 2, the end cover 4 and the spring 5 at the same time. The rotating shaft 3 and the rotating gasket 2 are connected by a connecting structure (such as the spline connection structure in this embodiment), and the two cannot rotate relative to each other. When the rotating shaft 3 is rotated by an external force, it will simultaneously drive the rotating gasket 2 to rotate between the housing 1 and the end cover 4. At this time, since the spring 5 is subjected to external biasing force, a sliding friction force is generated between the rotating gasket 2 and the brake layer 8 of the housing 1. This friction force is transmitted through the connecting structure between the rotating gasket 2 and the rotating shaft 3, thereby converting the friction force (sliding friction force) of the damping mechanism into the entire drive system.

[0044] Example 2

[0045] like Figure 10As shown, the difference from Example 1 is that in this embodiment, there are at least two rotating washers 2, which are arranged axially in sequence along the rotating shaft 3, and a sliding washer 13 is provided between adjacent rotating washers 2. More specifically, there are two rotating washers 2 and one sliding washer 13, which is located between the two rotating washers 2. The sliding washer 13 and the housing 1 are axially slidingly engaged, and the sliding washer 13 cannot rotate axially relative to the housing 1. Specifically, the outer edge of the sliding washer 13 is engaged with the inner wall of the housing 1 via a spline.

[0046] Rotating shaft 3 passes through a through-hole in the center of sliding gasket 13. Second brake layers 14 are provided on both end surfaces of sliding gasket 13 adjacent to rotating gasket 2. Second brake layers 14 are made of the same material as brake layer 8. End cap 4 contacts rotating gasket 2, which is furthest from brake layer 8. The elasticity of spring 5 transmits a biasing force to rotating gasket 2, sliding gasket 13, second brake layer 14, and brake layer 8. Rotating shaft 3 drives rotating gasket 2 relative to second brake layer 14 and brake layer 8, creating a damping effect through friction between rotating gasket 2 and brake layer 8, and between rotating gasket 2 and second brake layer 14.

[0047] Increasing the number of rotating washers 2 can increase the connection area between the rotating washers 2 and the rotating shaft 3, thereby extending the service life of the overall product structure.

[0048] The present invention is described above in conjunction with the best embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations based on the essence of the present invention.

Claims

1. A damping mechanism of a drive system, characterized in that: include: A housing (1), a rotating shaft (3), a rotating gasket (2) and a pressure device; One end of the rotating shaft (3) passes through the housing (1) and the two are rotatably matched; A braking layer (8) is arranged inside the housing (1); The pressure device comprises an end cover (4) and an elastic component; The rotating gasket (2) is arranged between the braking layer (8) and the end cover (4) of the housing (1), the rotating shaft (3) passes through the rotating gasket (2) and the two rotate synchronously, and the elastic component can bias the end cover (4) and the rotating gasket (2) toward the braking layer (8) of the housing (1).

2. The damping mechanism of a drive system according to claim 1, characterized in that: A rotating gasket connecting hole (9) is provided in the middle of the rotating gasket (2), and the rotating shaft (3) passes through the rotating gasket connecting hole (9) of the rotating gasket (2), and the two can rotate synchronously.

3. The damping mechanism of a drive system according to claim 2, characterized in that: The edge of the rotating gasket connecting hole (9) is provided with internal splines arranged in a ring shape, and the outer wall of the rotating shaft (3) is provided with external splines arranged in a ring shape. The external splines of the rotating shaft (3) are snap-fitted with the internal splines of the rotating gasket connecting hole (9).

4. A damping mechanism of a drive system according to any one of claims 1 to 3, characterized in that: The elastic component is a spring (5).

5. The damping mechanism of a driving system according to claim 1, characterized in that: A shell through hole (7) is provided in the middle of one end of the shell (1), and the rotating shaft (3) passes through the shell through hole (7), and the two are rotatably matched.

6. The damping mechanism of a driving system according to claim 1, characterized in that: The outer side of the housing (1) is provided with a plurality of housing mounting holes (6) for connecting with the bearing seat.

7. The damping mechanism of a driving system according to claim 1, characterized in that: The end cover (4) is provided with an end cover inner cavity (11), one end of the elastic component extends into the end cover inner cavity (11) of the end cover (4) and contacts the bottom thereof; an end cover through hole (10) is provided in the middle of one end of the end cover (4).

8. The damping mechanism of a driving system according to claim 1, characterized in that: It also includes a tension adjustment member (12), wherein the tension adjustment member (12), the elastic member, and the end cover (4) are sequentially arranged axially; the tension adjustment member (12) is in the shape of a cover and is threadedly connected to one end of the housing (1).

9. The damping mechanism of a driving system according to claim 1, characterized in that: The number of the rotating gaskets (2) is at least two and they are axially arranged in sequence along the rotating shaft (3); a sliding gasket (13) is provided between adjacent rotating gaskets (2); the sliding gasket (13) and the housing (1) are axially slidably matched; the rotating shaft (3) passes through a through hole in the middle of the sliding gasket (13); a second brake layer (14) is provided on the end surface of the sliding gasket (13) adjacent to the rotating gasket (2); and the end cover (4) is in contact with the rotating gasket (2) farthest from the brake layer (8).

10. The damping mechanism of a driving system according to claim 1, characterized in that: The brake layer (8) is made of carbon fiber; the rotating gasket (2) is made of ferrosilicon with a surface roughness of Rz3.2; the dynamic friction coefficient between the brake layer (8) and the rotating gasket (2) is greater than 0.42, and the static friction coefficient between the two is greater than 0.63.

Images