JPH04129929U - Release device for pull type clutch - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a release device for a pull-type clutch that can be manufactured in a simple process and can be reliably disassembled. [Structure] The device according to the present invention is for releasing the clutch by pulling out the inner circumferential end 8a of the diaphragm spring 8 toward the transmission. This device includes a lever plate 16 fixed to the inner peripheral end 8a of the diaphragm spring 8, a release bearing 13 having an inner race arranged on the inner peripheral side of the lever plate 16, and the lever plate 16 and the inner race. It includes a wire ring 14 that is disposed between and is deformable in the radial direction, and a scoop ring 15 that is fitted and supported by the inner race. In the scoop ring 15, a bent portion 15d inserted between the inner circumferential side of the wire ring 14 and the inner race is bent toward the outer circumferential side so that the inclined surface 15g becomes an inclined surface.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a release device, particularly a release device for a pull type clutch. .

0002

[Conventional technology]

In pull type clutches, the diaphragm spring is generally By pushing the plate toward the flywheel, the pressure plate and flywheel are The clutch disk is held between the eel and the clutch is connected. and , the inner circumference of the diaphragm spring is released on the transmission side by the release device. When the clutch is pulled out, the clutch is released.

0003 In general, the release device used for such pull-type clutches is The inner race of the spring bearing extends axially, and the inner race of the diaphragm spring It passes through a locking part fixed to the circumference and further enters the inside of the clutch. and , a wiring removably connects the inner race and the locking portion. The inner lace is used as a member to remove the wiring from the inner lace. A scoop ring is fitted and supported.

0004 FIG. 14 shows a conventional release device. In this configuration, the inner race 1 13 and the locking portion 114 are connected via a wire ring 115. Also, At the rear of the earring 115 in the axial direction (right side in FIG. 14), the inner lace 11 3 is fitted with a scoop ring 116. Axial front of scoop ring 116 On the side (left side in FIG. 14), there is a gap between the wiring 115 and the inner race 113. An inclined surface 116a is formed with an angle that facilitates insertion. Slope 1 At the axial rear of 16a, there is an annular groove in which the wiring 115 is locked during disassembly. 116b is formed. Also, the scoop ring 116 of the wiring 115 A notch 1 is provided in the portion where the scoop ring 116 comes into contact with the 15a is formed.

[0005]

[Problem that the idea aims to solve]

In the conventional configuration, the scoop ring 116 is connected to the wire ring 115 and the inner Scoop ring 116 is slanted in order to be easily inserted between race 113. The surface 116a, the annular groove 116b, and the notch 115a in the wiring 115. Both require complex processing steps.

[0006] The purpose of this invention is to create a pull type that can be manufactured in a simple process and that can be reliably disassembled. An object of the present invention is to provide a release device for a pull clutch.

[0007]

[Means to solve the problem]

The pull-type clutch release device according to the present invention has a diaphragm spring. To release the clutch, pull the inner end of the It's a special thing. This device is fixed to the inner peripheral end of the diaphragm spring. A release bearing that has a locking part and an inner race arranged on the inner circumferential side of the locking part. a wire that can be deformed in the radial direction and is placed between the locking part and the inner race. It includes a earring and a scoop ring that is fitted and supported by the inner race. $ The scoop ring is inserted between the wire ring and the inner race. The tip is bent toward the outer periphery so that the end surface becomes an inclined surface.

[0008]

[Effect]

In the pull type clutch release device according to the present invention, the scoop ring The tip of the side that is inserted between the wiring and the inner race has an inclined end surface. It is bent toward the outer periphery so as to form a flat surface. Therefore, the tip of the scoop ring is Easily inserted between earrings and inner lace. Also, the wiring Ensure that the tip of the scoop ring that is bent toward the outer circumferential side is deformed on the outer circumferential surface. It is locked. Therefore, wiring can be done easily and reliably from the inner race. Decomposed.

[0009] In addition, the above configuration can be achieved by simply bending the tip of the scoop ring toward the outer circumference. It can be processed in a simple process, and the complicated processing process used in the past is not required. Ru.

0010

【Example】

FIG. 1 shows a pull type clutch employing an embodiment of the present invention. In FIG. 1, this pull type clutch mainly consists of a clutch cover assembly. 1, a clutch disc 2, and a release device 3.

[0011] The clutch cover assembly 1 is a clutch fixed to a flywheel 5 on the engine side. clutch cover 6 and a pressure plate 7 arranged inside the clutch cover 6 and a diaphragm spring 8. Diaphragm spring 8 is outside The back side of the peripheral part is supported by the clutch cover 6, and the pressure plate 7 is supported by the clutch cover 6. It is elastically pressed against the clutch disc 2 side. Diaphragm spring 8 is inside A radial slit is provided from the peripheral end to the middle part in the radial direction, and the inner peripheral end 8 a is connected to the release device 3.

0012 The main drive system on the transmission side is located in the center of clutch disc 2. The front end portion (left end portion in FIG. 1) of the shaft 9 is engaged with a spline. clutch cover A transmission housing 10 is arranged at the rear of the assembly 1 (on the right side in Figure 1). Ru. The rear part of the main drive shaft 9 that spline engages the clutch disc 2 extends into the mission housing 10. In front of mission housing 10 At the end, there is a clip that covers the clutch cover assembly 1, flywheel 5, etc. from the outer circumferential side. A latch housing 11 is provided. Also, in front of Mission Housing 10 A collar 12 is arranged at the center of the wall 10a. main drive shaft The foot 9 is inserted through the collar 12.

[0013] The release device 3 will be explained in detail using FIGS. 2 and 3. The release device 3 is It is connected to the release fork 4 (Fig. 1) and is driven by external operation. obtain. The release device 3 includes a release bearing 13, a wiring ring 14, and a slider. It mainly consists of a coupling ring 15 and a lever plate 16.

[0014] The release bearing 13 is fitted on the outer periphery of the collar 12 (Fig. 1), and is axially It is possible to move in the direction. The inner race of the release bearing 13 is located at the front in the axial direction. It has an inner race extension part 13a formed to extend in the direction. Innare A tapered scooping surface 13b is formed on the outer peripheral surface of the tip of the base extension portion 13a. has been done. The rear of the scooping surface 13b receives force from the rear in the axial direction. An annular first fitting groove 13c is formed. The first fitting groove 13c is a wire ring. The cross section is arcuate so that it can make surface contact with the inner surface of the ring 14, and the rear It is formed deeper toward the inner circumferential side than the formed step portion 13d. Then, in the assembled state In this case, the wiring 18 contacts the first fitting groove 13c from the rear side in the axial direction. are doing. At the rear of the first fitting groove 13c, there is a diameter that matches the rear end of the first fitting groove 13c. A stepped portion 13d is formed. A scoop ring 1 is provided at the rear of the stepped portion 13d. A contact surface 13e for preventing the claw portion 15e (described later) of No. 5 from moving rearward in the axial direction is shaped. has been completed

[0015] The wiring 14 is an annular member with a circular cross section and can be deformed in the radial direction. It is. The wiring ring 14 is elastically deformed outward in the radial direction, and In other words, the inner It fits into the first fitting groove 13c of the race extension 13a.

[0016] An annular scoop ring 15 is provided on the outer periphery of the inner race extension 13a in the axial direction. It is arranged so that it can slide freely. The scoop ring 15 is shown in Figures 4, 5 and 6. Explain in detail. The flange portion 15a (annular portion) of the scoop ring 15 is annular. Franc The jaw portion 15a has a claw portion 15c that is integrally connected by a plurality of connecting portions 15b. There is. The tip of the claw portion 15c is a bent portion 15d bent toward the outer circumference. The end face is an inclined surface 15g. This bent portion 15d is formed by the claw portion 1 which is a thin plate material. It is formed by bending 5c, and the tip of the conventional scoop ring is used to form it. No complicated processes required for edge processing are required. The claw portion 15c has a step in the assembled state. It is fitted into the difference portion 13d (FIG. 2). Corner of inclined surface 15g with respect to step portion 13d The degree θ (Fig. 6) shows that the claw part 15c is an extension of the wiring 14 and the inner race when disassembled. The angle is such that it can be easily inserted between the portion 13a and the portion 13a. That is, the claw portion 15c is If the point where the tip contacts the wiring 14 when it is inserted in the opposite direction is M, then this point M The angle θ is smaller than the angle θm of the tangent m to the stepped portion 13d. ing. As a result, when the claw portion 15c is pushed forward, the lower part of the wiring ring 14 In addition, the wiring 14 can be easily expanded. Claw portion 15c The rear end portion 15e on the opposite side to the bent portion 15d is in contact with the inner race extension portion 13a. The scoop ring 15 is in contact with the surface 13e, which prevents the scoop ring 15 from moving rearward in the axial direction. regulated.

[0017] The scoop ring 15 also has protrusions formed on the inner circumferential side alternately with claw portions 15c. A contact portion 15f that extends is formed. When assembling, the contact part 15f is the inner It is fitted and supported by the race 13a.

[0018] As shown in FIGS. 2 and 3, the lever plate 16 includes a cylindrical portion 16a and a cylindrical portion 16a. and an outward flange portion 16b formed in the axially forward direction of a. The flange portion 16b is attached to a diaphragm spring together with the first support plate 17. The inner circumferential end 8a of the tag 8 is held between the inner circumferential ends 8a. Inner peripheral side of cylindrical portion 16a of lever plate 16 a second fitting groove 16c that is continuous from the rear in the axial direction and opens diagonally forward in the axial direction; Further outward in the radial direction, a third fitting groove 16d opens diagonally forward in the axial direction. has been completed. The second fitting groove 16c is in surface contact with a part of the outer periphery of the wiring ring 14. As you can see, the cross section is almost semicircular. In the second fitting groove 16c, there is a At this point, the wiring ring 14 is in contact from the front side in the axial direction. Third fitting groove 16d An inclined surface 16e is formed further forward and further outward in the radial direction.

[0019] A second support plate 18 is fixed to the front of the lever plate 16 in the axial direction. There is. The inner peripheral part of the second support plate 18 and the third fitting groove of the lever plate 16 A space serving as an escape groove for the wiring ring 14 is formed between the wire ring 14 and the inclined surface 16e. ing. In this space, there is a cone spring as a positioning member for the wiring 14. 19 are arranged. The cone spring 19 has an outer peripheral end connected to the second support plate. It is supported by the port 18. Further, the inner peripheral end is in contact with the wiring ring 14.

[0020] As is clear from the above explanation, the inner peripheral end 8a of the diaphragm spring 8 is , the inner race extension 1 via the lever plate 16 and the wiring 14. This means that it is connected to 3a.

[0021] Next, the assembly/disassembly work of the above embodiment will be explained. When assembling the release bearing 13 to the lever plate 16, as shown in FIG. , fit the wire ring 14 into the second fitting groove 16c side of the lever plate 16 in advance. Keep it together. In this state, the wiring 14 is moved by the cone spring 19. It is biased rearward in the axial direction to prevent displacement in the radial direction.

[0022] From this state, move the release bearing 13 forward in the axial direction and Push the race extension 13a inside the cylindrical portion 16a of the lever plate 16. vinegar Then, the scooping surface 13b at the tip of the inner race extension 13a is connected to the wire ring. 14. Furthermore, the release bearing 13 is moved forward in the axial direction. When the wire ring 14 is pushed up against the scooping surface 13b, it expands toward the outer periphery. and is pushed forward. Therefore, the wiring 14 is connected to the cone spring 19. The third fitting groove located on the front outer peripheral side of the second fitting groove 16c is removed from the second fitting groove 16c against the urging force of Move to the 16d side. At this time, the wiring 14 is connected to the lever plate 16, It is held between the cone spring 19 and the inner race extension 13a. Therefore, there will be no misalignment. Furthermore, move the release bearing 13 forward in the axial direction. Push the inner race extension part 13a toward the first fitting position until the wiring ring 14 is positioned. When the groove 13c is moved, the wiring 14 contracts due to its own elastic force and becomes the first It fits into the fitting groove 13c. Next, move the release bearing 13 axially rearward. Then, the wiring 14 moves from the third fitting groove 16d to the second fitting groove 13c, The wire ring 14 is locked with the first fitting groove 16c, and is in the state shown in FIG. . In this way, the release bearing 13 is attached to the lever plate 16. .

[0023] When disassembling, first move the release bearing 13 forward in the axial direction from the state shown in Figure 8. and move it. As a result, the wiring 14 is biased by the biasing force of the cone spring 19. As shown in FIG. 9, it is pushed forward against the It moves to the fitting groove 16d side. Furthermore, move the release bearing 13 forward in the axial direction. As the scoop ring 15 continues to be moved, the bent portion 15d of the scoop ring 15 will come into contact with the wiring ring 14. The wire ring 14 is inserted between the inner race extension 13a (Fig. 10) and the inner race extension 13a. It expands toward the outer circumference and reaches a state where it rides on the outer circumferential surface of the bent portion 15d (FIG. 11). child The running-up operation occurs when the inclined surface 15g of the claw portion 15c is connected to the wiring 14 and the inner layer. Since the angle is such that it can be easily inserted between the base extension part 13a, This can be easily done without chamfering or the like on the wiring 14 side. And the wire The ring 14 is securely fitted and supported by the claw portion 15c by the bent portion 15d. It will not easily come off from 15c.

[0024] Next, the release bearing 13 is moved in the opposite direction (axially rearward). here The scoop ring 15 holds the wire ring 14 on the outer peripheral surface of the bent portion 15d. Only the inner race extension part 13a moves rearward. to this Therefore, as shown in FIG. 12, the first fitting groove 13c of the inner race extension 13a is The wire ring 14 is covered by the claw portion 15c of the scoop ring 15, and the wire ring 14 is It cannot fit into the groove 13c.

[0025] When the release bearing 13 is moved further rearward, the end of the first fitting groove 13c The part hits the bent part 15d which is the tip of the claw part 15c of the scoop ring 15, and this After that, the scoop ring 15 is also moved rearward together with the inner race extension 13a. be given As a result, the wiring 14 is bent at the bent portion 15d as shown in FIG. It comes off and rides on the scooping surface 13b of the inner race extension 13a. This wire ring 14 is about to come off from the claw part 15c of the scoop ring 15. When the bending part 15d is moved by the wiring 14, It is in a state where it is pushed into the first fitting groove 13c that is formed deeply on the side. This is it Therefore, the scoop ring 15 does not move backward during this operation; Therefore, the wiring ring 14 is prevented from returning to the first fitting groove 13c. In addition, After the release bearing 13 is pulled out from inside the lever plate 16, the wire The ring 14 is pushed backward by the cone spring 19 and is inserted into the second fitting groove 16c. It fits in (left side of Figure 7).

[0026] [Another example] In the above embodiment, the scoop ring has a flange portion connected to a claw portion. However, a scoop ring made of a cylinder like the conventional example may also be used. in this case, The tip of the cylinder will be bent toward the outer circumference.

[0027]

[Effect of the idea]

The release device for a pull-type clutch according to the present invention has a release device for a pull-type clutch that The end of the side that will be inserted between the inner race and the outer periphery so that the end face is an inclined surface. It has a scoop ring that bends on the side. Therefore, according to the present invention, Can be manufactured without the need for complicated processing processes, and can be easily and reliably wired to the inner A pull-type clutch release device that can be disassembled from the race can be realized. Ru.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a pull-type clutch employing an embodiment of the present invention.

FIG. 2 is a partial vertical cross-sectional view of the release device.

FIG. 3 is an enlarged partial view of FIG. 2;

FIG. 4 is a front view of the scoop ring.

FIG. 5 is a cross-sectional view taken along line III-III in FIG. 2;

FIG. 6 is an enlarged partial view of FIG. 3;

FIG. 7 is a partial vertical cross-sectional view showing the assembly/disassembly operation of the release device.

FIG. 8 is a vertical cross-sectional partial view showing the assembly/disassembly operation of the release device.

FIG. 9 is a vertical cross-sectional partial view showing the assembly/disassembly operation of the release device.

FIG. 10 is a vertical cross-sectional partial view showing the assembly/disassembly operation of the release device.

FIG. 11 is a partial vertical cross-sectional view showing the assembly/disassembly operation of the release device.

FIG. 12 is a vertical cross-sectional partial view showing the assembly/disassembly operation of the release device.

FIG. 13 is a vertical cross-sectional partial view showing the assembly/disassembly operation of the release device.

FIG. 14 is a partial vertical cross-sectional view of a conventional release device.

[Explanation of symbols]

3 Release device 8 Diaphragm spring 8a Inner peripheral end 13 Release bearing 16 Lever plate 14 Wiring 15 Scoop ring 15c Claw part 15d Bent part

Claims (1)

[Scope of utility model registration request] 1. A pull-type clutch release device for releasing a clutch by pulling an inner peripheral end of a diaphragm spring toward a transmission, the locking portion being fixed to the inner peripheral end of the diaphragm spring. a release bearing having an inner race disposed on the inner peripheral side of the locking portion; a wire ring disposed between the locking portion and the inner race and capable of deforming in a radial direction; and the wire ring and the inner race. A release for a pull type clutch, comprising: a scoop ring that is fitted and supported by the inner race, the tip of which is inserted between the inner race and the inner race, the end of which is bent toward the outer periphery so that the end surface forms an inclined surface; Device.