An improved fixed shaft assembly for a clutch

Abstract

This utility model belongs to the technical field of clutch components, specifically relating to an improved fixed shaft assembly for clutches, including a fixed plate and a fixed shaft. The fixed plate and fixed shaft are press-fitted with a knurled structure. A positioning ring is sleeved on the outer wall of the fixed shaft, and a connecting plate is sleeved on the fixed shaft. A reinforcing component is provided between the connecting plate and the fixed plate. This improved fixed shaft assembly for clutches further strengthens the connection based on the knurled press-fit of the fixed shaft and fixed plate through the use of multiple reinforcing components. The compression spring inside the sleeve pushes the T-rod and the positioning head to press against the clamping ring, so that the clamping ring is tightly fitted in the groove of the fixed plate, forming radial constraint on the aluminum fixed plate and reducing its stress deformation. The snap-fit ​​between the positioning pin and the positioning groove and the fixing of the limiting block ensure that the clamping ring is stably attached to the fixed shaft and fixed plate, greatly improving the peel strength of the shaft and plate and avoiding the risk of loosening or disconnection.

Description

Technical Field

[0001] This utility model relates to the technical field of clutch components, specifically an improved fixed shaft assembly for clutches. Background Technology

[0002] As the core component in a mechanical transmission system that enables the separation and engagement of power, the clutch's fixed shaft assembly plays a crucial role in supporting rotating components (such as pressure plates and driven plates) and transmitting axial and radial forces.

[0003] Currently, in existing UTV clutch designs, the fixed shaft is made of iron, and the fixed plate is made of aluminum, connected by a press fit: the outer diameter of the fixed shaft is machined with straight knurling, while the inner hole of the fixed plate is smooth, achieving initial fixation through an interference fit. However, this structure has certain drawbacks: Firstly, the aluminum fixed plate has low hardness, while the fixed shaft is made of iron, resulting in significant differences in material properties. During the high-frequency, high-load operation of the UTV, the clutch needs to frequently transmit torque, and the press-fit surfaces of the fixed shaft and fixed plate will continuously bear axial and radial forces. Under long-term stress, the aluminum fixed plate is prone to deformation, leading to loosening of the fit with the fixed shaft, resulting in insufficient peel strength between the shaft and plate. In severe cases, there is a risk of connection breakage, directly affecting the power transmission function of the clutch and even causing mechanical failure. Secondly, the spring installed in the clutch groove will flex and deform during operation. Since the spring is in direct contact with the outer diameter of the aluminum fixed plate, the deformation of the spring will cause frictional wear on the aluminum surface during continuous rotation. Aluminum materials have poor wear resistance, and long-term wear will gradually damage the outer diameter of the fixed plate. This not only destroys the structural integrity of the parts, but may also affect the normal use of the spring due to the debris generated by wear, further aggravating the product's failure and reducing the service life and operational safety of the clutch. In view of this, an improved fixed shaft assembly for clutches is proposed. Utility Model Content

[0004] The main objective of this invention is to provide an improved fixed shaft assembly for a clutch, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model proposes an improved fixed shaft assembly for a clutch, comprising a fixed plate and a fixed shaft. The fixed plate and the fixed shaft are press-fitted together using a knurled structure. A positioning ring is sleeved on the outer wall of the fixed shaft, and a connecting plate is sleeved on the fixed shaft. A reinforcing assembly is provided between the connecting plate and the fixed plate, the reinforcing assembly comprising:

[0006] A sleeve rod, wherein a T-rod is sleeved on the sleeve rod, and the inner wall of the sleeve rod is elastically connected to the T-rod by a compression spring;

[0007] A positioning head, wherein the positioning head is fixed to the end of the T-rod away from the sleeve rod;

[0008] A clamping ring is detachably connected to the positioning head.

[0009] Preferably, the fixing plate has a groove that matches the clamping ring for mounting the clamping ring, and the clamping ring extends from the inside to the outside on the side away from the positioning head.

[0010] Preferably, a positioning post is fixedly connected in the recess of the clamping ring, and a limit block is rotatably connected to the end of the positioning post away from the clamping ring.

[0011] Preferably, a positioning groove is formed on the outer wall of the positioning head, and the positioning groove matches the positioning post.

[0012] Preferably, after the positioning head abuts against the clamping ring, the positioning pin is inserted into the positioning groove, and the positioning head can be fixed by rotating the limiting block.

[0013] Preferably, the connecting plate and the fixing plate are detachably connected by bolts, and an annular groove is formed on the inner surface of the connecting plate, and the sleeve rod is fixedly connected in the annular groove of the connecting plate.

[0014] Preferably, the reinforcing components are provided in multiple sets, and the multiple sets of reinforcing components are arranged in a circular array around the central axis of the fixed axis.

[0015] This invention provides an improved fixed shaft assembly for a clutch. It has the following advantages:

[0016] (1) The improved fixed shaft assembly of this clutch further strengthens the connection based on the knurled press fit between the fixed shaft and the fixed plate through the use of multiple sets of reinforcing components. The compression spring in the sleeve pushes the T-rod and the positioning head to press against the clamping ring, so that the clamping ring is tightly fitted in the groove of the fixed plate, forming a radial constraint on the aluminum fixed plate and reducing its stress deformation. The snap-fit ​​between the positioning pin and the positioning groove and the fixing of the limiting block ensure that the clamping ring is stably fitted with the fixed shaft and the fixed plate, greatly improving the peel strength between the shaft and the plate and avoiding the risk of loosening or disconnection.

[0017] (2) The clutch uses an improved fixed shaft assembly with a clamping ring embedded in the groove of the fixed plate and with its outer surface flush, replacing the aluminum fixed plate that directly contacts the spring. The rigid material of the clamping ring resists the friction caused by the bending deformation of the spring. At the same time, the reinforcing components of multiple ring arrays ensure that the clamping ring is installed firmly, preventing the aluminum parts from being exposed due to loosening. This effectively prevents wear on the outer diameter of the aluminum fixed plate, reduces the generation of debris, ensures the normal operation of the spring, and significantly improves the overall safety and service life of the clutch. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0020] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0022] Figure 4 This utility model Figure 2 Schematic diagram of structure A in the middle;

[0023] Figure 5 This is a schematic diagram of the clamping ring structure of this utility model;

[0024] Figure 6 This utility model Figure 5 Schematic diagram of structure B in the middle;

[0025] Figure 7 This is a schematic diagram of the reinforcing component of this utility model.

[0026] Explanation of icon numbers

[0027] 1. Fixing plate; 2. Fixing shaft; 3. Positioning ring; 4. Connecting plate; 5. Reinforcing assembly; 41. Bolt; 42. Annular groove; 51. Sleeve rod; 52. T-rod; 53. Positioning head; 54. Clamping ring; 55. Compression spring; 541. Positioning post; 542. Limiting block; 531. Positioning groove.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-7 This utility model proposes an improved fixed shaft assembly for a clutch, including a fixed plate 1 and a fixed shaft 2. The fixed plate 1 and the fixed shaft 2 are press-fitted with a straight-knurled structure. A positioning ring 3 is sleeved on the outer wall of the fixed shaft 2. A connecting plate 4 is sleeved on the fixed shaft 2. A reinforcing component 5 is provided between the connecting plate 4 and the fixed plate 1.

[0031] In this embodiment of the utility model, in order to enhance the peel strength between the fixed plate 1 and the fixed shaft 2, the reinforcing component 5 specifically includes a sleeve rod 51, a positioning head 53, and a clamping ring 54. The sleeve rod 51 is sleeved with a T-rod 52, and the inner wall of the sleeve rod 51 is elastically connected to the T-rod 52 by a compression spring 55. The positioning head 53 is fixed to the end of the T-rod 52 away from the sleeve rod 51. The clamping ring 54 is detachably connected to the positioning head 53. During assembly, the elastic force of the compression spring 55 pushes the T-rod 52 to drive the positioning head 53 to always press against the clamping ring 54, so that the clamping ring 54 tightly fits the fixed shaft 2 and the fixed plate 1. The elastic pre-tightening force compensates for the assembly gap, ensuring connection stability and avoiding the risk of peeling due to loosening after long-term use.

[0032] Furthermore, the fixing plate 1 has a groove that matches the clamping ring 54 for mounting the clamping ring 54. The side of the clamping ring 54 away from the positioning head 53 expands from the inside to the outside. During installation, after the clamping ring 54 is embedded in the groove, its outward expansion side tightly engages with the inner wall of the groove, increasing the contact area with the fixing plate 1. At the same time, the outward expansion structure can disperse the radial force transmitted by the fixing shaft 2, prevent the aluminum fixing plate 1 from being deformed by local stress, and improve the load-bearing capacity of the overall structure.

[0033] Furthermore, a positioning pin 541 is fixedly connected to the recess of the clamping ring 54. The end of the positioning pin 541 away from the clamping ring 54 is rotatably connected to a limit block 542. A positioning groove 531 is provided on the outer wall of the positioning head 53. The positioning groove 531 matches the positioning pin 541. After the positioning head 53 abuts against the clamping ring 54, the positioning pin 541 is inserted into the positioning groove 531. By rotating the limit block 542, the positioning head 53 can be limited and fixed. During assembly, the positioning pin 541 is inserted into the positioning groove 531 to achieve precise alignment between the clamping ring 54 and the positioning head 53. The limit block 542 is rotated to abut against the outer wall of the positioning head 53, forming a mechanical lock to prevent the two from separating due to vibration when the clutch is running, ensuring reliable connection, and facilitating the installation and replacement of the clamping ring 54.

[0034] Furthermore, the connecting plate 4 and the fixing plate 1 are detachably connected by bolts 41. The inner surface of the connecting plate 4 is provided with an annular groove 42. The sleeve rod 51 is fixedly connected in the annular groove 42 of the connecting plate 4. The connecting plate 4 is fixed to the fixing plate 1 by bolts 41. This detachable design makes it easy to replace the damaged reinforcing component 5 separately during later maintenance without disassembling the entire fixed shaft assembly, thus reducing maintenance costs.

[0035] Furthermore, multiple sets of reinforcing components 5 are provided, and these multiple sets of reinforcing components 5 are arranged in a ring array around the central axis of the fixed shaft 2. The multiple sets of ring-distributed reinforcing components 5 can evenly distribute the clamping force to the contact surface between the fixed shaft 2 and the fixed plate 1, avoiding deformation of the aluminum fixed plate 1 caused by local stress concentration. At the same time, the ring array structure ensures that the fixed shaft 2 is subjected to balanced forces, reduces eccentric vibration during operation, and improves the overall smoothness of the clutch operation.

[0036] In use, firstly, the fixed shaft 2 and the fixed plate 1 are press-fitted using a straight-knurled structure to ensure initial fixation. Then, the positioning ring 3 is sleeved on the corresponding position of the fixed shaft 2 to provide axial limiting. Next, the clamping ring 54 is embedded into the pre-set groove of the fixed plate 1, so that its outer side tightly engages with the inner wall of the groove. Then, the positioning head 53 is connected to the positioning post 541, and the positioning post 541 of the clamping ring 54 is inserted into the positioning groove 531 of the positioning head 53. Then, the limiting block 542 is rotated to abut against the outer wall of the positioning head 53 to complete mechanical locking. Finally, the connecting plate 4 is fixed to the fixed plate 1 with bolts 41 to ensure that the sleeve rod 51 is stably positioned through the annular groove 42.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An improved fixed shaft assembly for a clutch, comprising a fixed plate (1) and a fixed shaft (2), characterized in that: The fixing plate (1) and the fixing shaft (2) are press-fitted with a knurled structure. A positioning ring (3) is sleeved on the outer wall of the fixing shaft (2). A connecting plate (4) is sleeved on the fixing shaft (2). A reinforcing component (5) is provided between the connecting plate (4) and the fixing plate (1). The reinforcing component (5) includes: A sleeve rod (51) is sleeved with a T rod (52), and the inner wall of the sleeve rod (51) and the T rod (52) are elastically connected by a compression spring (55). Positioning head (53), the positioning head (53) is fixed to the end of T rod (52) away from sleeve rod (51); A clamping ring (54) is detachably connected to a positioning head (53).

2. The improved fixed shaft assembly for a clutch according to claim 1, characterized in that: The fixing plate (1) has a groove that matches the clamping ring (54) for mounting the clamping ring (54). The clamping ring (54) extends from the inside to the outside on the side away from the positioning head (53).

3. An improved fixed shaft assembly for a clutch according to claim 1, characterized in that: A positioning post (541) is fixedly connected in the recess of the clamping ring (54), and a limit block (542) is rotatably connected to the end of the positioning post (541) away from the clamping ring (54).

4. An improved fixed shaft assembly for a clutch according to claim 3, characterized in that: The positioning head (53) has a positioning groove (531) on its outer wall, and the positioning groove (531) matches the positioning post (541).

5. An improved fixed shaft assembly for a clutch according to claim 4, characterized in that: After the positioning head (53) comes into contact with the clamping ring (54), the positioning pin (541) is inserted into the positioning groove (531), and the positioning head (53) can be fixed by rotating the limiting block (542).

6. An improved fixed shaft assembly for a clutch according to claim 1, characterized in that: The connecting plate (4) and the fixing plate (1) are detachably connected by bolts (41). The inner surface of the connecting plate (4) is provided with an annular groove (42), and the sleeve rod (51) is fixedly connected in the annular groove (42) of the connecting plate (4).

7. An improved fixed shaft assembly for a clutch according to claim 1, characterized in that: The reinforcing component (5) is provided in multiple sets, and the multiple sets of reinforcing components (5) are arranged in a circular array around the central axis of the fixed shaft (2).

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