Motorcycle clutch plate center spline quick positioning assembly structure

Abstract

This utility model discloses a quick-positioning assembly structure for the center spline of a motorcycle clutch disc, including an outer disc and an inner disc. A shaft tube is connected to the center of the outer disc via a bearing, and the shaft tube has a center external spline. A center internal spline is located at the center of the inner disc. A transition connection assembly is provided between the center external spline and the center internal spline, and the transition connection assembly includes a limiting support component; the transition connection assembly includes a transition piece. This quick-positioning assembly structure for the center spline of a motorcycle clutch disc differs from traditional manual assembly. This solution involves simply installing a transition piece before assembly to cooperate with the shaft tube. This allows for better guidance during the insertion process of the center internal spline into the center external spline of the outer disc, preventing mutual collision and wear during the pressing process.

Description

Technical Field

[0001] This utility model relates to the field of motorcycle transmission system technology, and in particular to a quick-positioning assembly structure for the center spline of a motorcycle clutch disc. Background Technology

[0002] The motorcycle clutch is a key transmission component connecting the engine and gearbox. Its core function is to switch power transmission on and off by pressing or separating the friction plates and pressure plate. As the core component directly involved in power transmission, the clutch disc is assembled by first connecting the outer and inner discs using a center spline, and then installing the clutch disc between the connected outer and inner discs. The outer disc is linked to the crankshaft via gears, while the inner disc is independent of the outer disc. The connection between the two relies on the friction of the clutch disc.

[0003] In existing assembly technologies, the assembly of the center spline of the clutch disc mainly relies on manual alignment and pressing. Operators need to align the internal spline of the clutch disc with the external spline of the gearbox input shaft tooth by tooth, and then press it axially with a special press. However, the spline teeth are precise, and the manual alignment process is prone to "misalignment" (i.e., the spline teeth are not completely aligned). This leads to excessive local stress on the spline teeth during the pressing process, causing deformation, wear, or even breakage, which affects the quality of the assembled product. Therefore, a quick positioning assembly structure for the center spline of a motorcycle clutch disc is needed to solve the above problems. Utility Model Content

[0004] This utility model discloses a quick-positioning assembly structure for the center spline of a motorcycle clutch plate, aiming to solve the technical problem that the spline teeth are precise and the manual alignment process is prone to "misalignment", which leads to excessive local stress on the spline teeth during the press-fitting process, resulting in deformation, wear or even breakage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A quick-positioning assembly structure for a motorcycle clutch disc center spline includes an outer disc and an inner disc. The center of the outer disc is connected to a shaft tube via a bearing. The shaft tube is provided with a center external spline. The center of the inner disc is provided with a center internal spline. A transition connection assembly is provided between the center external spline and the center internal spline. The transition connection assembly is provided with a limit support assembly. The transition connection assembly includes a transition piece, which consists of an adapter and a limiting shaft. The outer wall of the adapter has protrusions distributed at equal intervals. The protrusions and the adapter are integrally injection molded. The size of the adapter is the same as that of the shaft tube, and the size of the protrusions is the same as that of the central external spline.

[0006] By adopting the above technical solution, the transition connection component can be quickly connected to the shaft tube using the limiting support component, keeping the protrusion in the transition piece aligned with the central external spline. In actual use, the inner disc is fitted onto the transition piece for guided embedding. During this process, the inner disc will first be fitted onto the appropriate outer wall, and then the position of the central internal spline in the inner disc will be corrected by the correction of the protrusion, finally being smoothly guided onto the outer wall of the shaft tube, without causing collision and wear between the central external spline and the central internal spline, thus providing better protection.

[0007] As a further embodiment of this utility model: the limiting support assembly includes a sliding groove disposed on the inner wall of the limiting shaft, a spring disposed on the bottom inner wall of the sliding groove, a pressure rod slidably connected to the inner wall of the sliding groove, the bottom end of the pressure rod contacting but not connected to the top of the spring, three equally spaced circumferentially distributed mounting holes disposed on the outer wall of the limiting shaft, the mounting holes communicating with the sliding groove, a connecting rod disposed on the inner wall of each mounting hole, one end of the connecting rod being connected to a support pad via a hinge, the other end of the connecting rod being connected to the outer wall of the pressure rod via a hinge, two centrally symmetrical locking grooves disposed at the top of the limiting shaft, a pressing head and two limiting blocks disposed at the top of the pressure rod, the two limiting blocks being located on both sides of the pressing head, the limiting blocks cooperating with the locking grooves.

[0008] By adopting the above technical solution, the limiting support assembly can play a linkage support role inside the limiting shaft. In actual use, by pinching the pressing head, first aligning it in the insertion position, then driving the pressure rod down until the two limiting blocks are embedded in the locking groove, then twisting the pressure rod, using the locking groove to lock the pressing head in it. During the pressing process, the pressure rod will drive the connecting rod to support the three support pads out of the mounting holes, using their elastic deformation support to press against the inner wall of the shaft tube, preventing the transition part from separating from the shaft tube, and ensuring stable assembly.

[0009] In summary, this application includes at least one of the following beneficial technical effects: 1. Better protection: Unlike traditional manual assembly, this solution simply installs a transition piece before assembly to cooperate with the shaft tube. This allows for better guidance during the insertion process of the inner disc through the central internal spline and the outer disc through the central external spline, avoiding mutual collision and wear during the pressing process.

[0010] 2. The connection is more stable. During the pressing process, the pressure rod will drive the connecting rod to support the three support pads out of the mounting holes. The pads will be supported by their elastic deformation and pressed against the inner wall of the shaft tube to prevent the transition piece from separating from the shaft tube.

[0011] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the installation structure of the quick-positioning assembly structure for the center spline of the motorcycle clutch disc proposed in this utility model.

[0013] Figure 2 This is a front sectional view of the transition component of the quick-positioning assembly structure for the center spline of the motorcycle clutch disc proposed in this utility model.

[0014] Figure 3 This is a schematic diagram of the impact component of the motorcycle clutch disc center spline quick positioning assembly structure proposed in this utility model.

[0015] Figure 4 For the present utility model in Figure 3 A magnified structural diagram of point A in the middle.

[0016] Figure 5 This is a schematic diagram of the limiting block structure of the quick positioning assembly structure for the center spline of the motorcycle clutch disc proposed in this utility model.

[0017] In the attached diagram: 1. Outer disc; 2. Inner disc; 3. Transition piece; 301. Adaptive fitting; 302. Limiting shaft; 4. Center external spline; 5. Center internal spline; 6. Spring; 7. Support pad; 8. Connecting rod; 9. Pressure rod; 10. Pressing head; 11. Limiting block; 12. Locking groove. Detailed Implementation

[0018] 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.

[0019] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The motorcycle clutch disc center spline quick positioning assembly structure includes an outer disc 1 and an inner disc 2. The center position of the outer disc 1 is connected to a shaft tube via a bearing. The shaft tube is provided with a center outer spline 4. The center position of the inner disc 2 is provided with a center inner spline 5. A transition connection assembly is provided between the center outer spline 4 and the center inner spline 5. The transition connection assembly is provided with a limit support assembly. The transition connection assembly includes a transition piece 3, which consists of an adapter 301 and a limiting shaft 302. The outer wall of the adapter 301 is provided with equally spaced protrusions. The protrusions and the adapter 301 are integrally injection molded. The adapter 301 has the same size as the shaft tube, and the protrusions have the same size as the central outer spline 4.

[0020] Specifically, through the set transition connection component, the limiting support component can be quickly connected to the shaft tube, keeping the protrusion in the transition piece 3 corresponding to the center external spline 4. In actual use, the inner plate 2 is sleeved on the transition piece 3 for guided insertion. In this process, the inner plate 2 will first be sleeved on the outer wall of the matching 301, and then the position of the center internal spline 5 in the inner plate 2 is corrected by the correction of the protrusion, and finally smoothly guided to the outer wall of the shaft tube, without causing collision and wear between the center external spline 4 and the center internal spline 5, thus providing better protection.

[0021] Among them, the top of the 301 fitting is a truncated cone with a sloping surface, which makes it easier to align during the initial embedding process.

[0022] Both the raised section and the matching 301 are made of soft plastic.

[0023] Reference Figure 3 , Figure 4 and Figure 5 In a preferred embodiment, the limiting support assembly includes a groove on the inner wall of the limiting shaft 302, a spring 6 on the bottom inner wall of the groove, and a pressure rod 9 slidably connected to the inner wall of the groove. The bottom end of the pressure rod 9 is in contact with the top of the spring 6 but not connected. The outer wall of the limiting shaft 302 has three equidistantly distributed mounting holes that communicate with the groove. Each mounting hole has a connecting rod 8 on its inner wall. One end of the connecting rod 8 is connected to a support pad 7 via a hinge, and the other end of the connecting rod 8 is connected to the outer wall of the pressure rod 9 via a hinge. The top end of the limiting shaft 302 has two centrally symmetrical locking grooves 12. The top end of the pressure rod 9 has a pressing head 10 and two limiting blocks 11. The two limiting blocks 11 are located on both sides of the pressing head 10 and cooperate with the locking grooves 12.

[0024] Specifically, the pressure rod 9 can play a linkage support role inside the limiting shaft 302. The locking groove 12 locks the pressing head 10 in it. During the pressing process, the pressure rod 9 will drive the connecting rod 8 to support the three support pads 7 out of the mounting hole. The support pads 7 are supported by their elastic deformation and pressed against the inner wall of the shaft tube to prevent the transition piece 3 from separating from the shaft tube and to ensure the stable assembly process.

[0025] Working principle: When in use, first install the transition piece 3 onto the inner wall of the shaft tube on the outer disk 1, ensuring that the protrusion in the transition piece 3 corresponds to the position of the central outer spline 4. Then, pinch the pressing head 10, first align the insertion position, and then drive the pressing rod 9 down until the two limit blocks 11 are embedded in the locking groove 12. Then, twist the pressing rod 9 to lock the pressing head 10 in the locking groove 12. During the pressing process, the pressing rod 9 will drive the connecting rod 8 to support the three support pads 7 out of the mounting hole. Utilize their elastic deformation support to press against the inner wall of the shaft tube, ensuring that the two will not move relative to each other. Then, using the flexible guidance of the transition piece 3, assemble the central inner spline 5 and the central outer spline 4 on the inner disk 2.

[0026] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A quick-positioning assembly structure for the center spline of a motorcycle clutch disc, comprising an outer disc (1) and an inner disc (2), characterized in that, The outer disk (1) is connected to a shaft tube by a bearing at its center position. The shaft tube is provided with a central external spline (4). The inner disk (2) is provided with a central internal spline (5) at its center position. A transition connection assembly is provided between the central external spline (4) and the central internal spline (5). The transition connection assembly is provided with a limiting support assembly. The transition connection assembly includes a transition piece (3), which is composed of a fitting (301) and a limiting shaft (302). The outer wall of the fitting (301) is provided with protrusions distributed at equal intervals. The protrusions are integrally injection molded with the fitting (301). The size of the fitting (301) is consistent with that of the shaft tube, and the size of the protrusions is consistent with that of the central external spline (4).

2. The motorcycle clutch disc center spline quick positioning assembly structure according to claim 1, characterized in that, The top of the adapter (301) is a truncated cone slope.

3. The motorcycle clutch disc center spline quick positioning assembly structure according to claim 2, characterized in that, Both the protrusion and the adapter (301) are made of soft plastic.

4. The motorcycle clutch disc center spline quick positioning assembly structure according to claim 1, characterized in that, The limiting support assembly includes a sliding groove on the inner wall of the limiting shaft (302), a spring (6) is provided on the bottom inner wall of the sliding groove, and a pressure rod (9) is slidably connected to the inner wall of the sliding groove. The bottom end of the pressure rod (9) is in contact with the top of the spring (6) but not connected.

5. The motorcycle clutch disc center spline quick positioning assembly structure according to claim 4, characterized in that, The outer wall of the limiting shaft (302) is provided with three equally spaced circumferentially distributed mounting holes. The mounting holes are connected to the sliding groove. Each mounting hole has a connecting rod (8) on its inner wall. One end of the connecting rod (8) is connected to a support pad (7) by a hinge. The other end of the connecting rod (8) is connected to the outer wall of the pressure rod (9) by a hinge.

6. The motorcycle clutch disc center spline quick positioning assembly structure according to claim 5, characterized in that, The top end of the limiting shaft (302) is provided with two centrally symmetrical locking grooves (12), and the top end of the pressure rod (9) is provided with a pressing head (10) and two limiting blocks (11), with the two limiting blocks (11) located on both sides of the pressing head (10).

7. The motorcycle clutch disc center spline quick positioning assembly structure according to claim 6, characterized in that, The limiting block (11) is used in conjunction with the locking groove (12).

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