One-way bevel ball automatic clutch

Abstract

The application discloses a one-way inclined ball automatic clutch, which comprises a spiral shaft, an outer clutch seat and an inner clutch seat, wherein a roller assembly is installed in the outer clutch seat, a conical contact part is arranged on the inner clutch seat, a roller mounting part is arranged on the position of the outer clutch seat close to the inner clutch seat, the roller mounting part surrounds the conical contact part, and the roller assembly is installed on the inner side wall of the roller mounting part and located in the mounting space. The inner clutch seat and the outer clutch seat with the conical structure are designed, so that the one-way ball can be installed in the inclined state in the outer clutch seat, and then when the clutch works, the power transmission of the inner clutch seat and the outer clutch seat can be locked through the one-way roller, the torque is large, and the inclined installation of the one-way roller can reduce the centrifugal force suffered by the one-way ball, so that the service life of the clutch is not affected due to the deviation of the one-way ball.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic clutch device, in particular to a one-way inclined bead automatic clutch. BACKGROUND

[0002] The clutch is a component for cutting off and transmitting power between the engine and the automobile transmission system, which is installed between the engine and the transmission, and the power output from the engine to the transmission system is cut off or transmitted by temporarily separating or gradually engaging the engine and the transmission system. At present, the clutches on the market mainly include friction plate clutches and ratchet clutches, and the clutch on the automobile is usually a friction plate clutch. This clutch connects the driven disc with friction plates and the driven shaft, and the driven disc is pressed against the flywheel end face by a compression spring, so that the friction plates contact the driven disc, and the power transmission is realized under the friction between the friction plate and the driven disc.

[0003] Although the friction plate clutch in the prior art can realize power transmission, the maximum torque that can be transmitted by the clutch depends on the compression force of the compression spring and the maximum static friction torque between the friction surfaces, which causes the clutch to slip easily at high speed, the torque is small, and the power transmission effect is poor. The friction plate of the friction plate clutch is easy to heat after long time use, which further reduces the torque, and the friction plate is easy to wear and has a low service life. SUMMARY

[0004] In order to solve the problems in the prior art, the present application provides a one-way inclined bead automatic clutch, which has large torque and is not easy to heat, has good power transmission effect, can save energy, and has long service life.

[0005] The technical solution adopted by the present application to solve the technical problems is as follows: a one-way inclined bead automatic clutch, comprising a spiral shaft, an outer clutch seat and an inner clutch seat sleeved on the spiral shaft, a plurality of roller assemblies are installed in the outer clutch seat, a tapered contact portion is arranged on the end face of the inner clutch seat close to the outer clutch seat, one end of the tapered contact portion close to the outer clutch seat is inclined towards the direction close to the spiral shaft, a roller mounting portion is arranged at the position of the outer clutch seat close to the inner clutch seat, the inner side wall of the roller mounting portion is inclined away from the spiral shaft, the roller mounting portion surrounds the outer tapered contact portion and forms a tapered mounting space with the tapered contact portion, and the roller assembly is installed at the inner side wall of the roller mounting portion and located in the mounting space.

[0006] By adopting the above technical solution, the torque of the clutch can be improved, the offset of the roller bead can be reduced at high speed, slipping can be avoided, and the inner clutch seat can be successfully pushed out at low speed to ensure the normal use of the clutch.

[0007] Further, cam blocks are equidistantly installed at the inner side wall of the roller mounting portion, each of the cam blocks comprises a cam surface and a mounting surface, and a roller groove is enclosed between the mounting surface and the cam surface of adjacent two cam blocks.

[0008] By adopting the above technical solution, the roller bead can be installed in the roller groove and slide along the cam surface to the tapered contact portion to lock the inner seat and the outer seat of the clutch.

[0009] Further, the roller assembly comprises one-way roller beads, return springs, and a roller bead net for fixing the one-way roller beads, the cross section of the roller bead net is in an inverted trapezoidal structure, the roller bead net is sleeved in the mounting space, the one-way roller beads are installed on the roller bead net and located in the roller groove, the side wall of the one-way roller bead is attached to the cam surface, and one end of the return spring is fixedly installed on the mounting surface and the other end of the return spring abuts against the side wall of the one-way roller bead.

[0010] By adopting the above technical solution, when the rotating speed is high, the return spring can push the one-way roller bead to lock the inner seat and the outer seat of the clutch, and when the rotating speed is low, the one-way roller bead can be pulled away from the inner seat to realize the independent rotation of the outer ring of the clutch.

[0011] Further, the one-way roller bead is obliquely installed along the inner side wall of the roller mounting portion and the outer side wall of the tapered contact portion, the roller bead net comprises mounting rings at two ends and a plurality of connecting arms connecting the two mounting rings, adjacent two connecting arms enclose a mounting port, the position of the mounting port corresponds to the position of the roller groove, the one-way roller bead is installed in the mounting port and attached to the outer side wall of the tapered contact portion through the mounting port, and the two ends of the one-way roller bead abut against the end faces of the two mounting rings close to each other.

[0012] By adopting the above technical solution, the one-way roller bead can be limited by the roller bead net, so that the one-way roller bead is not taken out when the inner seat of the clutch is withdrawn, the position is not deviated, and the normal use of the clutch is affected.

[0013] Further, the abutting end of the return spring and the one-way roller bead is provided with an abutting block, the abutting block comprises a plug-in portion and an abutting portion, the plug-in portion is plugged into the return spring, and the abutting portion abuts against the side wall of the one-way roller bead, and the abutting portion abutting against the one-way roller bead is a circular arc groove surface matched with the structure of the one-way roller bead.

[0014] By adopting the above technical solution, the rotation of the one-way roller bead can be more stable, and the service life can be affected by the deviation of the return spring.

[0015] Further, an annular sleeve is arranged on the end face of the inner seat away from the outer seat of the clutch, the inner diameter of the annular sleeve is matched with the inner diameter of the spiral shaft, a spiral sleeve is installed in the annular sleeve, and the end of the spiral shaft close to the inner seat is plugged into the spiral sleeve.

[0016] By adopting the technical scheme, the clutch inner seat can be moved to the direction of approaching the clutch outer seat under the action of the spiral sleeve after the spiral shaft rotates, and finally the clutch inner seat and the clutch outer seat are locked.

[0017] Further, the end of the clutch outer seat away from the clutch inner seat is provided with a mounting sleeve, the bearing is fixedly installed in the mounting sleeve, and the end of the spiral shaft close to the clutch outer seat is fixedly inserted into the bearing.

[0018] Further, the transmission gear is fixedly installed outside the mounting sleeve.

[0019] By adopting the technical scheme, the clutch outer seat can be rotated under the action of the transmission gear.

[0020] Further, the clutch spring is sleeved on the spiral shaft, the clutch spring is located in the clutch inner seat, one end of the clutch spring abuts against the end face of the clutch inner seat close to the clutch outer seat, and the other end of the clutch spring abuts against the end face of the bearing.

[0021] By adopting the technical scheme, when the rotating speed is low, the clutch inner seat can be away from the clutch outer seat under the action of the clutch spring, so that the clutch outer seat rotates alone, and the clutch is prevented from being locked.

[0022] Further, the centrifugal device is fixedly installed at the end face of the clutch inner seat close to the clutch outer seat.

[0023] By adopting the technical scheme, the centrifugal force borne by the clutch inner seat can be improved, the moving speed of the clutch inner seat on the spiral shaft can be accelerated, the locking speed of the clutch inner seat and the clutch outer seat can be improved, and the response speed of the clutch during work can be improved.

[0024] Compared with the prior art, the present application has the following beneficial effects:

[0025] 1. By designing the taper structure of the clutch inner seat and the clutch outer seat, the one-way ball can be installed in the clutch outer seat in an inclined state, so that when the clutch works, the centrifugal force borne by the one-way ball can be reduced, the service life of the clutch is not affected by the deviation of the one-way ball, and when the rotating speed is low, the clutch inner seat can be smoothly withdrawn from the clutch outer seat, and accidents caused by clutch jamming are avoided.

[0026] 2. By installing the one-way ball in an inclined manner, the one-way ball can be subjected to forces in multiple directions when locking the clutch inner seat and the clutch outer seat, so that the torque of the clutch is improved, the occurrence of slipping is reduced, and the performance of the clutch is improved.

[0027] The above description is only a summary of the technical solutions of the present application, in order to make the technical means of the present application more clearly understood, and can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a front view of the clutch of the present embodiment;

[0029] Figure 2 is a sectional view at A-A in the present embodiment; Figure 1

[0030] Figure 3 is an enlarged view at B in the present embodiment; Figure 2

[0031] Figure 4 is a structural schematic view of the roller bead net of the present embodiment.

[0032] In the figure: 1, helical shaft; 11, clutch spring; 2, clutch inner seat; 21, conical contact part; 22, annular sleeve; 23, centrifugal device; 3, clutch outer seat; 31, roller mounting part; 32, cam block; 321, cam surface; 322, mounting surface; 323, roller groove; 33, mounting sleeve; 34, bearing; 35, transmission gear; 4, roller assembly; 41, one-way ball; 42, return spring; 5, mounting space; 6, top block; 61, plug-in part; 62, top contact part; 7, roller bead net; 71, mounting ring; 72, connecting arm; 8, helical sleeve. DETAILED DESCRIPTION

[0033] In order to make the content of the present application more easily and clearly understood, the present application is further described below according to specific embodiments and in conjunction with the accompanying drawings.

[0034] It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like used herein indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application. Unless otherwise specified, the meaning of "a plurality of" is two or more.

[0035] ​​Unless otherwise defined, the terms "mounting", "connected", "connecting" are to be construed as broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through an intermediate medium, or can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] As shown in Figure 1 A one-way bevel ball automatic clutch, comprising a screw shaft 1, a clutch outer seat 3 sleeved on the screw shaft 1, and a clutch inner seat 2 movably mounted on the screw shaft 1, a roller assembly 4 is mounted in the clutch outer seat 3, when the screw shaft 1 rotates, the clutch inner seat 2 moves towards the clutch outer seat 3, under the action of the roller assembly 4, the clutch inner seat 2 and the clutch outer seat 3 are locked, realizing the normal work of the clutch.

[0037] Among them, the end face of the clutch inner seat 2 close to the clutch outer seat 3 is provided with a tapered contact part 21, the end of the tapered contact part 21 close to the clutch outer seat 3 is inclined to the direction close to the screw shaft 1, the position close to the clutch inner seat 2 of the clutch outer seat 3 is provided with a roller mounting part 31, the inner side wall of the roller mounting part 31 is inclined to the direction away from the screw shaft 1, the roller mounting part 31 and the tapered contact part 21 of the tapered structure in the embodiment are designed, so that the roller assembly 4 can be inclinedly mounted into the tapered mounting space 5 along the inner side inclined surface of the roller mounting part 31, and when the roller assembly 4 locks the clutch outer seat 3 and the clutch inner seat 2, it can be subjected to force in multiple directions at the same time, so as to improve the locking force of the clutch inner seat 2 and the clutch outer seat 3, prevent slipping, and improve the torque; and by setting the tapered contact part 21, when the rotating speed is low, the clutch inner seat 2 can move from the bottom of the roller mounting part 31 with small diameter to the top of the roller mounting part 31 with large diameter, so as to avoid that the roller assembly 4 and the clutch inner seat 2 are stuck, causing the clutch inner seat 2 to fail to exit, and causing accidents.

[0038] As shown in Figure 2 The inner side wall of the roller mounting part 31 is equidistantly provided with cam blocks 32, each cam block 32 comprises a cam surface 321 and a mounting surface 322, the mounting surface 322 and the cam surface 321 between the adjacent two cam blocks 32 are surrounded to form a roller groove 323, the roller assembly 4 is mounted in the roller groove 323 and can move in the roller groove to lock the clutch inner seat 2 and the clutch outer seat 3.

[0039] The column assembly comprises one-way ball 41, return spring 42 and roller ball net 7, the one-way ball 41 is installed on the roller ball net 7, and the one-way ball 41 is limited by the roller ball net 7, so that when the clutch inner seat 2 is withdrawn at a low speed, the one-way ball 41 is prevented from being deviated due to the movement of the one-way ball, thereby affecting the stable operation of the clutch; wherein the cross section of the roller ball net 7 is a reverse trapezoidal structure, which is convenient for being sleeved in the installation space 5, and the one-way ball 41 is installed on the roller ball net 7, so that the one-way ball 41 can be installed in an inclined state, thereby improving the torque of the clutch in the embodiment and facilitating the withdrawal of the clutch inner seat 2.

[0040] The one-way ball 41 is installed in the roller groove 323, and the side wall thereof is in contact with the cam surface 321, so that the one-way ball 41 can move on the cam surface 321 to release or lock the clutch inner seat 2 and the clutch outer seat 3; one end of the return spring 42 is fixedly installed on the installation surface 322, and the other end of the return spring 42 abuts against the side wall of the one-way ball 41, when the speed is low (i.e. the clutch outer seat 3 can rotate relative to the clutch inner seat 2 in the counterclockwise direction), the one-way ball 41 moves along the cam surface 321 away from the locking position and compresses the return spring 42, thereby preventing the clutch inner seat 2 and the clutch outer seat 3 from being locked; when the speed is high (i.e. the clutch outer seat 3 tries to rotate relative to the clutch inner seat 2 in the clockwise direction), the clutch inner seat 2 and the clutch outer seat 3 need to be locked, at this time, the one-way ball 41 moves along the cam surface 321 towards the locking position under the action of centrifugal force, and the return spring 42 pushes the one-way ball 41 to move, so that the one-way ball 41 can be moved to the locking position to lock the clutch outer seat 3 and the clutch inner seat 2, thereby realizing the normal operation of the clutch.

[0041] As shown in Figure 2 and Figure 3 , the abutting end of the return spring 42 and the one-way ball 41 of the embodiment is provided with an abutting block 6, the abutting block 6 comprises a plug-in part 61 and an abutting part 62, wherein the plug-in part 61 is plugged into the return spring 42, and the abutting part 62 abuts against the side wall of the one-way ball 41, so that the return spring 42 can be in contact with the one-way ball 41 through the abutting block 6, thereby preventing the one-way ball 41 from rotating and causing the return spring 42 to deviate, thereby affecting the service life of the clutch; in order to make the rotation of the one-way ball 41 more smooth, the abutting end of the abutting part 62 and the one-way ball 41 of the embodiment is a circular arc groove surface which is matched with the structure of the one-way ball 41, so that the one-way ball 41 can rotate along the circular arc groove surface, thereby improving the stability of the one-way ball 41 during rotation.

[0042] After the installation of the one-way ball 41, the inner side wall of the roller mounting portion 31 and the outer side wall of the tapered contact portion 21 are inclined, so that the circumferential side wall of the one-way ball 41 can be in contact with the inner side wall of the roller mounting portion 31 and the outer side wall of the tapered contact portion 21 respectively, thereby realizing the synchronous rotation of the clutch outer seat 3 and the clutch inner seat 2.

[0043] As shown in Figure 4 The roller ball net 7 in the embodiment includes two mounting rings 71 and a plurality of connecting arms 72 connected between the two mounting rings 71. The two adjacent connecting arms 72 surround a mounting port, and the position of the mounting port corresponds to the position of the roller groove 323. By abutting the two ends of the one-way ball 41 on the end faces of the two mounting rings 71 that are close to each other, the one-way ball 41 is installed in the mounting port, so that the one-way ball 41 can be fixed through the roller ball net 7, and the one-way ball 41 can be located in the roller groove 323 after installation. When the rotational speed is high, the one-way ball moves in the mounting port, one side of the one-way ball 41 is in contact with the cam surface 321, and the other side of the one-way ball 41 is in contact with the outer side wall of the tapered contact portion 21 through the mounting port, thereby realizing the locking of the clutch inner seat 2 and the clutch outer seat 3, and the synchronous rotation of the clutch inner seat 2 and the clutch outer seat 3.

[0044] As shown in Figure 1 The end face of the clutch inner seat 2 away from the clutch outer seat 3 is provided with an annular sleeve 22, the inner diameter of the annular sleeve 22 is matched with the inner diameter of the spiral shaft 1, a spiral sleeve 8 is installed in the annular sleeve 22, and the end of the spiral shaft 1 close to the clutch inner seat 2 is inserted into the spiral sleeve 8. When the spiral shaft 1 rotates, the clutch inner seat 2 can move towards the clutch outer seat 3 under the action of the spiral sleeve 8, thereby realizing the locking of the clutch inner seat 2 and the clutch outer seat 3.

[0045] The end of the clutch outer seat 3 away from the clutch inner seat 2 is provided with a mounting sleeve 33, the bearing 34 is fixedly installed in the mounting sleeve 33, the end of the spiral shaft 1 close to the clutch outer seat 3 is fixedly inserted into the bearing 34, and the transmission gear 35 is fixedly installed outside the mounting sleeve 33. When the spiral shaft 1 rotates at high speed to lock the clutch inner seat 2 and the clutch outer seat 3, the clutch outer seat rotates at high speed to drive the transmission gear to rotate and transmit power.

[0046] The clutch spring 11 is sleeved on the spiral shaft 1 and located in the clutch inner seat 2. One end of the clutch spring 11 abuts against the end face of the clutch inner seat 2 close to the clutch outer seat 3, and the other end of the clutch spring 11 abuts against the end face of the bearing 34. When the rotational speed is high, the clutch inner seat 2 compresses the clutch spring 11 and moves towards the clutch outer seat 3, and the clutch inner seat 2 and the clutch outer seat 3 are locked to rotate synchronously. When the rotational speed is too low, the clutch inner seat 2 moves away from the clutch outer seat 3 under the pushing of the clutch spring 11, so that the clutch outer seat 3 rotates alone to prevent skidding.

[0047] As Figure 1 shown, the clutch inner seat 2 of the embodiment is provided with a centrifugal groove near the end face of the clutch outer seat 3, and a centrifugal device 23 is fixedly installed in the centrifugal groove, so that when the clutch inner seat 2 rotates under the action of the screw shaft 1, the centrifugal force received by the clutch inner seat 2 can be increased through the centrifugal device 23, and then the moving speed of the clutch inner seat 2 on the screw shaft 1 can be accelerated, the locking speed of the clutch inner seat 2 and the clutch outer seat 3 can be increased, and then the reaction speed of the clutch during operation can be increased.

[0048] The working principle of the embodiment is as follows: when the rotating speed is too high, the clutch outer seat 3 is compressed by the spiral sleeve 8 to move towards the direction close to the clutch outer seat 3, so that the clutch outer seat 3 is locked with the clutch inner seat 2, at this time, the one-way ball 41 moves to the locking position along the cam surface 321 to realize locking; when the rotating speed is reduced, the centripetal force received by the clutch inner seat 2 is reduced, at this time, the one-way ball 41 moves away from the locking position along the cam surface 321, and under the action of the clutch spring 11, the clutch inner seat 2 is separated from the clutch outer seat 3, so that the clutch inner seat 2 and the clutch outer seat 3 move relatively.

[0049] The above-described embodiments are only preferred embodiments of the present application, and cannot be used to limit the protection scope of the present application, and any non-essential changes and modifications made by those skilled in the art on the basis of the present application all belong to the protection scope of the present application.

Claims

1. A one-way inclined ball automatic clutch, comprising a helical shaft (1), a clutch outer seat (3) and a clutch inner seat (2) fitted on the helical shaft (1), wherein multiple sets of roller assemblies (4) are installed in the clutch outer seat (3), characterized in that: The inner clutch seat (2) has a tapered contact portion (21) on its end face near the outer clutch seat (3). The end of the tapered contact portion (21) near the outer clutch seat (3) is inclined toward the helical shaft (1). The outer clutch seat (3) has a roller mounting portion (31) near the inner clutch seat (2). The inner sidewall of the roller mounting portion (31) is inclined away from the helical shaft (1). The roller mounting portion (31) surrounds the tapered contact portion (21) and forms a tapered mounting space (5) with the tapered contact portion (21). The roller assembly (4) is mounted on the inner sidewall of the roller mounting portion (31) and is located in the mounting space (5). Cam blocks (32) are equidistantly installed on the inner sidewall of the roller mounting part (31). Each cam block (32) includes a cam surface (321) and a mounting surface (322). The mounting surface (322) and the cam surface (321) of two adjacent cam blocks (32) surround each other to form a roller groove (323). The roller assembly (4) includes a one-way ball (41), a return spring (42), and a roller bead mesh (7) for fixing the one-way ball (41). The roller bead mesh (7) has an inverted trapezoidal cross-section and is fitted into the installation space (5). The one-way ball (41) is mounted on the roller bead mesh (7) and located in the roller groove (323). The sidewall of the one-way ball is in contact with the cam surface (321). One end of the return spring (42) is fixedly installed. On the mounting surface (322), the other end of the return spring (42) is provided with a top contact block (6) that abuts against the side wall of the one-way ball (41). The top contact block (6) includes an insertion part (61) and a top contact part (62). The insertion part (61) is inserted into the return spring (42), and the top contact part (62) abuts against the side wall of the one-way ball (41). The end of the top contact part (62) that abuts against the one-way ball (41) is an arc groove surface that is adapted to the structure of the one-way ball (41).

2. The one-way inclined ball automatic clutch according to claim 1, characterized in that: The one-way ball (41) is installed at an angle along the inner side wall of the roller mounting part (31) and the outer side wall of the conical contact part (21). The roller ball mesh (7) includes mounting rings (71) at both ends and several connecting arms (72) connecting two mounting rings (71). Two adjacent connecting arms (72) surround to form a mounting opening. The position of the mounting opening corresponds to the position of the roller groove (323). The one-way ball (41) is installed in the mounting opening and passes through the mounting opening to fit against the outer side wall of the conical contact part (21). The two ends of the one-way ball (41) respectively abut against the end faces of the two mounting rings (71) that are close to each other.

3. A one-way inclined ball automatic clutch according to claim 1, characterized in that: The inner seat (2) of the clutch is provided with an annular sleeve (22) on the end face away from the outer seat (3) of the clutch. The inner diameter of the annular sleeve (22) is adapted to the inner diameter of the spiral shaft (1). A spiral sleeve (8) is installed inside the annular sleeve (22). The end of the spiral shaft (1) near the inner seat (2) of the clutch is inserted into the spiral sleeve (8).

4. A one-way inclined ball automatic clutch according to claim 1, characterized in that: The outer seat of the clutch (3) is provided with a mounting sleeve (33) at one end away from the inner seat of the clutch (2). A bearing (34) is fixedly installed in the mounting sleeve (33). The end of the spiral shaft (1) near the outer seat of the clutch (3) is fixedly inserted into the bearing (34).

5. A one-way inclined ball automatic clutch according to claim 4, characterized in that: A transmission gear (35) is fixedly installed on the outside of the mounting sleeve (33).

6. A one-way inclined ball automatic clutch according to claim 5, characterized in that: A clutch spring (11) is fitted on the spiral shaft (1). The clutch spring (11) is located inside the clutch inner seat (2). One end of the clutch spring (11) abuts against the end face of the clutch inner seat (2) near the clutch outer seat (3), and the other end of the clutch spring (11) abuts against the end face of the bearing (34).

7. A one-way inclined ball automatic clutch according to claim 1, characterized in that: A centrifuge (23) is fixedly installed on the circumference of the end face of the inner clutch seat (2) near the outer clutch seat (3).

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