Roller type gear clutch

Abstract

The utility model discloses a roller type gear clutch, and relates to the field of clutches. The roller type gear clutch comprises a driving fluted disc, a driven gear shaft and a crimping switching assembly, a cylindrical hole and a wedge-shaped track groove communicating with the cylindrical hole are formed in the driving fluted disc, and the wedge-shaped track groove is provided with a first end and a second end; the driven gear shaft is provided with a cylindrical shaft body, a wedging groove is formed in the outer cylindrical surface of the cylindrical shaft body, and the crimping switching assembly comprises a roller, a reset elastic piece, an end cover and an elastic crimping cover. The driving fluted disc is operated to rotate relative to the driven gear shaft by applying force, so that the roller can be clamped in the wedging cavity in a wedging manner, and the driving fluted disc and the driven gear shaft are in a transmission connection state; or the roller is separated from the wedging clamping of the wedging cavity, so that the driving fluted disc and the driven gear shaft are in a decoupling rotation state. The roller type gear clutch is simple in overall structure, low in cost, convenient in clutch switching, high in transmission efficiency and reliability and excellent in actual clutch unlocking performance.

Description

Technical Field

[0001] The utility model relates to the field of clutches, in particular to a roller type gear clutch. Background Art

[0002] A clutch is a very important component in mechanical equipment. Its function is to cut off or connect the power transmission between the drive and the transmission when the equipment shifts gears or stops running, so as to ensure smooth gear shifting and reduce the wear of internal gears. The clutch mainly consists of three parts: a driving part, a driven part, and a pressing device. The driving part is connected to the engine and rotates with the engine; the driven part is connected to the transmission and rotates with the transmission; the pressing device presses the driving part and the driven part together so that they can engage or disengage.

[0003] Currently, various types of roller clutches are widely used in mechanical devices or equipment for torque transmission or output. Among them, the pure mechanical structure type roller clutches are divided into manual and manual-automatic integrated types. The manual roller clutch is inconvenient to use and requires manual operation to shift the clutch between engagement and disengagement; for the manual-automatic integrated clutch, in terms of structure, the prior art is relatively complex and cumbersome, and its efficiency, cost, reliability, and actual clutch unlocking performance are not good. Summary of the Utility Model

[0004] To solve the technical problems raised in the above background art, the utility model provides a roller type gear clutch, including:

[0005] A driving gear disk, adapted to be in transmission connection with a driving side gear set; a cylindrical hole is provided in the driving gear disk, and at least a pair of wedge-shaped track grooves communicated with the cylindrical hole are provided. The wedge-shaped track grooves have a first end and a second end; in any pair of the wedge-shaped track grooves, the two wedge-shaped track grooves are oppositely spaced along the circumferential direction of the driving gear disk;

[0006] A driven gear shaft, adapted to be in transmission connection with an output side gear set; the driven gear shaft has a cylindrical shaft body, the cylindrical shaft body is coaxially nested in the cylindrical hole, and at least one wedging groove is provided on the outer cylindrical surface of the cylindrical shaft body. The wedge-shaped track grooves and the wedging grooves extend along the axial direction of the cylindrical shaft body;

[0007] and a crimping switching component, including a roller, a reset elastic member, an end cap and an elastic crimping cover. One end of the reset elastic member is fixedly connected to the driving gear disc, and the other end of the reset elastic member is fixedly connected to the roller. The reset elastic member is adapted to press the roller against the first end of the wedge-shaped track groove. The driving gear disc and the roller are arranged between the end cap and the elastic crimping cover. The end cap and the elastic crimping cover are fixedly sleeved on the outer periphery of the cylindrical shaft. The roller is crimped and arranged between the end cap and the elastic crimping cover;

[0008] Any one of the wedge-shaped track grooves is correspondingly provided with the roller and the reset elastic member; the two sides of the groove surface of the wedging groove are symmetrically provided with inferior arc working surfaces, and the radius of the inferior arc working surface is equal to or greater than the radius of the roller;

[0009] When the driving gear disc rotates relative to the driven gear shaft in the first direction under the action of an external force, the wedge-shaped track groove and the wedging groove can approach and combine into a wedging cavity. The roller can overcome the elastic force of the reset elastic member under the crimping action of the end cap and the elastic crimping cover, and slide towards the second end of the wedge-shaped track groove to be wedgingly clamped in the wedging cavity, so that the driving gear disc and the driven gear shaft are in a transmission connection state;

[0010] When the driving gear disc rotates relative to the driven gear shaft in the second direction under the action of an external force, the roller can slide towards the first end of the wedge-shaped track groove under the crimping action of the end cap and the elastic crimping cover and the elastic force of the reset elastic member to disengage from the wedging clamping of the wedging cavity, so that the driving gear disc and the driven gear shaft are in a decoupled rotation state;

[0011] The first direction and the second direction are reversely arranged, and the driving gear disc and the driven gear shaft are adapted to be bidirectionally clutched and switched between the transmission connection state and the decoupled rotation state.

[0012] As a preferred technical solution, the roller-type gear clutch further includes an axial retaining ring. The axial retaining ring is abutted against the side of the end cap away from the elastic crimping cover. An axial retaining ring groove is provided on the cylindrical shaft, and the axial retaining ring is snap-fitted and sleeved in the axial retaining ring groove.

[0013] As a preferred technical solution, the elastic crimping cover includes a compression spring gasket and a compression spring member sleeved on the cylindrical shaft. There are two end caps, and the two end caps are arranged on both sides of the driving gear disc in the axial direction; both ends of the roller are abutted between the two end caps, and the compression spring member is installed between the end cap adjacent to the driven gear shaft and the compression spring gasket.

[0014] As a preferred technical solution, the inner wall surface from the first end to the second end of the wedge-shaped track groove is provided as a straight surface wedge shape or an arc surface wedge shape;

[0015] On the radial cross-section of the driving gear disc, the acute angle β formed between the normal perpendicular line of any point on the inner wall surface between the first end and the second end and the connection line from this point to the cylindrical hole is greater than the friction dead angle value at the wedge-shaped track groove.

[0016] The technical solution provided by the present utility model has the following advantages:

[0017] The roller-type gear clutch provided by the present utility model includes a driving gear disc, a driven gear shaft, and a press-fitting switching assembly. The driving gear disc is provided with a cylindrical hole and at least a pair of wedge-shaped track grooves communicated with the cylindrical hole. The wedge-shaped track groove has a first end and a second end; the driven gear shaft has a cylindrical shaft body, and the cylindrical shaft body is coaxially nested in the cylindrical hole. A wedge-shaped groove is provided on the outer cylindrical surface of the cylindrical shaft body. The press-fitting switching assembly includes a roller, a reset elastic member, an end cover, and an elastic press-fitting cover. The reset elastic member is adapted to press the roller against the first end of the wedge-shaped track groove. The driving gear disc and the roller are arranged between the end cover and the elastic press-fitting cover. The end cover and the elastic press-fitting cover are fixedly sleeved on the outer periphery of the cylindrical shaft body, and the roller is press-fitted and arranged between the end cover and the elastic press-fitting cover; the two sides of the groove surface of the wedge-shaped groove are symmetrically provided with inferior arc working surfaces, and the radius of the inferior arc working surface is equal to or greater than the radius of the roller.

[0018] For the roller-type gear clutch with this structure, by applying a force to operate the driving gear disc to rotate relative to the driven gear shaft, the wedge-shaped track groove and the wedge-shaped groove can be brought closer to form a wedging cavity. The roller can overcome the elastic force of the reset elastic member under the pressing action of the end cover and the elastic press-fitting cover, and slide towards the second end of the wedge-shaped track groove to be wedgingly clamped in the wedging cavity. The roller is in contact with the inferior arc working surface, so that the driving gear disc and the driven gear shaft are in a transmission connection state; or the roller can slide towards the first end of the wedge-shaped track groove to disengage from the wedging clamping of the wedging cavity, and the roller is disengaged from the inferior arc working surface, so that the driving gear disc and the driven gear shaft are in a decoupled rotation state; the driving gear disc and the driven gear shaft are adapted to be bidirectionally clutched and switched between the transmission connection state and the decoupled rotation state. The roller-type gear clutch provided by the present utility model has a simple overall structure, low cost, can perform bidirectional rotary operation for clutch, has convenient clutch switching, good transmission efficiency and reliability, and excellent actual clutch unlocking performance. Description of the Drawings

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 Explosion schematic diagram of the roller type gear clutch provided by the present invention;

[0021] Figure 2 Partial sectional axonometric view of the roller type gear clutch provided by the present invention;

[0022] Figure 3 Top view of the driving gear disc in the roller type gear clutch provided by the present invention;

[0023] Figure 4 Front view of the driving gear disc in the roller type gear clutch provided by the present invention;

[0024] Figure 5 Connection schematic diagram of the driving gear disc, roller and reset elastic member in the roller type gear clutch provided by the present invention;

[0025] Figure 6 Partial sectional schematic diagram of the roller type gear clutch provided by the present invention;

[0026] Figure 7 Stereogram of the driven gear shaft in the roller type gear clutch provided by the present invention;

[0027] Figure 8 Side view of the driven gear shaft in the roller type gear clutch provided by the present invention;

[0028] Figure 9 Cross-sectional view of the driven gear shaft in the roller type gear clutch provided by the present invention;

[0029] Figure 10 Connection schematic diagram of the roller type gear clutch provided by the present invention in the wedged state;

[0030] Explanation of reference numerals:

[0031] 1 - Driving gear disc; 11 - Wedge-shaped track groove; 12 - Protrusion; 2 - Driven gear shaft; 21 - Wedging groove; 3 - Roller; 4 - Reset elastic member; 5 - End cover; 6 - Spring washer; 7 - Axial retaining ring; 8 - Spring member. Specific embodiments

[0032] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0036] Embodiment

[0037] This embodiment provides a roller-type gear clutch. Refer to Figure 1 and Figure 2 and Figure 10 , which includes a driving gear disk 1, a driven gear shaft 2, and a crimping and switching assembly. The crimping and switching assembly is suitable for bidirectional clutch to switch between the driving gear disk 1 and the driven gear shaft 2, so that the two are switched between a transmission connection state and a decoupled rotation state. In this embodiment, the driving gear disk 1 is suitable for being in transmission connection with the driving-side gear set, the driven gear shaft 2 is suitable for being in transmission connection with the output-side gear set, and the driving gear disk 1 and the driven gear shaft 2 are coaxially and clearance-fitted and connected.

[0038] In a specific embodiment, refer to Figures 1 to 9, the driving gear disc 1 is provided with an external gear ring structure for driving connection with the driving-side gear set. For example, the external gear ring structure can be meshed and connected with the pinion gear of the turbine gear set at the driving motor end; the driven gear shaft 2 is provided with a tooth profile structure for driving connection with the output-side gear set.

[0039] In a specific embodiment, refer to Figures 1 to 3 , the driving gear disc 1 is provided with a cylindrical hole and at least a pair of wedge-shaped track grooves 11 communicated with the cylindrical hole, and there are one pair or more of the wedge-shaped track grooves 11. The wedge-shaped track grooves 11 have a first end and a second end; taking Figure 3 the upper wedge-shaped track groove 11 as an example, the first end is the right end area of the wedge-shaped track groove 11, and the second end is the left end area of the wedge-shaped track groove 11. The two wedge-shaped track grooves 11 in any pair of wedge-shaped track grooves 11 are arranged at opposite intervals along the circumferential direction of the driving gear disc 1.

[0040] Refer to Figure 7 and Figure 9 , the driven gear shaft 2 has a cylindrical shaft body coaxially nested in the cylindrical hole, and at least one wedging groove 21 is provided on the outer cylindrical surface of the cylindrical shaft body. Among them, the wedge-shaped track grooves 11 and the wedging grooves 21 extend along the axial direction of the cylindrical shaft body.

[0041] Refer to Figure 1 and Figure 2 , the crimping switching assembly includes a roller 3, a reset elastic member 4, an end cover 5 and an elastic crimping cover. One end of the reset elastic member 4 is fixedly connected to the driving gear disc 1, and the other end of the reset elastic member 4 is fixedly connected to the roller 3. The reset elastic member 4 is adapted to press the roller 3 against the first end of the wedge-shaped track groove 11. The driving gear disc 1 and the roller 3 are arranged between the end cover 5 and the elastic crimping cover; the end cover 5 and the elastic crimping cover are fixedly sleeved on the outer periphery of the cylindrical shaft body, and the roller 3 is press-fitted and arranged between the end cover 5 and the elastic crimping cover. Among them, the driving gear disc 1 is provided with an assembly groove for installing the reset elastic member 4, and the assembly groove is communicated with the wedge-shaped track groove 11.

[0042] During the specific operation process, when the driving gear disk 1 rotates relative to the driven gear shaft 2 in the first direction under the action of an external force, the wedge-shaped track groove 11 and the engaging groove 21 can approach and combine into an engaging cavity. The roller 3 can overcome the elastic force of the reset elastic member 4 under the pressing action of the end cover 5 and the elastic pressing cover, and slide towards the second end of the wedge-shaped track groove 11 to be engaged and clamped in the engaging cavity. The roller 3 is in contact with the inferior arc working surface, so that the driving gear disk 1 and the driven gear shaft 2 are in a driving connection state; when the driving gear disk 1 rotates relative to the driven gear shaft 2 in the second direction under the action of an external force, the roller 3 can slide towards the first end of the wedge-shaped track groove 11 under the pressing action of the end cover 5 and the elastic pressing cover and the elastic force of the reset elastic member 4 to disengage from the engaging and clamping of the engaging cavity, and the roller 3 is disengaged from the inferior arc working surface, so that the driving gear disk 1 and the driven gear shaft 2 are in a decoupled rotation state; the driving gear disk 1 and the driven gear shaft 2 are adapted to be bidirectionally clutched and switched between the driving connection state and the decoupled rotation state. In this embodiment, the first direction and the second direction are set to be opposite to each other, and both the first direction and the second direction are set to be the rotation direction around the cylindrical shaft body.

[0043] At least one pair of wedge-shaped track grooves 11 are arranged on the driving gear disk 1. As an exemplary implementation manner, two wedge-shaped track grooves 11 are provided, and the two wedge-shaped track grooves 11 are set as a pair; the two wedge-shaped track grooves 11 are spaced apart from each other on the driving gear disk 1, and any one of the wedge-shaped track grooves 11 is correspondingly provided with a roller 3 and a reset elastic member 4. Figure 1 For example, the two rollers 3 are arranged at intervals up and down, and the upper roller 3 and the lower roller are respectively slidably arranged in the two wedge-shaped track grooves 11.

[0044] In a specific implementation manner, referring to Figure 5 and Figure 9 and Figure 10 and

[0045] During the specific operation process, the end portions of the two rollers 3 along the length direction are respectively contacted and pressed by the end cover 5 and the elastic pressing cover. When the driving gear disk 1 rotates relative to the driven gear shaft 2, taking clockwise rotation as an example, Figure 1For example, the upper roller 3 is directly pushed by the active toothed disc 1, and the upper roller 3 and the end cover 5 and the elastic crimping cover are slidably arranged, and the reset elastic member 4 connected to the upper roller 3 does not deform; the lower roller 3 is not pushed by the active toothed disc 1, and the lower roller 3 overcomes the elastic force of the reset elastic member 4 under the crimping and friction of the end cover 5 and the elastic crimping cover, and is displaced, and the reset elastic member 4 is compressed and deformed, and the lower roller 3 enters the wedging groove 21 under the action of the inner wall contour of the protrusion 12, so that the lower roller 3 can be wedged and clamped in the wedge The track groove 11 and the wedging groove 21 are close to each other in the combined wedging cavity, thereby realizing the wedging of the active gear plate 1 and the passive gear shaft 2; when the lower roller 3 needs to exit the wedging, the active gear plate 1 is gently pushed to rotate counterclockwise relative to the passive gear shaft 2, and the wedge-shaped track groove 11 and the wedging groove 21 are offset away from each other, so that the wedging cavity is separated, and the lower roller 3 moves from the second end of the wedge-shaped track groove 11 toward the first end under the action of the reset elastic member 4, so that the exited lower roller 3 can exit the wedging, thereby realizing the decoupling of the active gear plate 1 and the passive gear shaft 2.

[0046] In this embodiment, see Figure 3 At least one pair of wedge-shaped track grooves 11 is provided, and the two wedge-shaped track grooves 11 in any pair of wedge-shaped track grooves 11 are arranged at opposite intervals along the circumferential direction of the active gear plate 1; and rollers 3 and reset elastic members 4 are correspondingly arranged in any wedge-shaped track groove 11. This arrangement is conducive to the positive and negative rotation of the active gear plate 1 and the passive gear shaft 2, so as to quickly switch the clutch, and the purpose of wedging the active gear plate 1 and the passive gear shaft 2 for transmission connection or separation and decoupling is improved, thereby improving the convenience of the clutch operation.

[0047] In other embodiments, two or more pairs of wedge-shaped track grooves 11 are arranged on the driving gear disc 1, and the number of the wedge-shaped track grooves 11 arranged in pairs is designed and configured according to actual needs.

[0048] As a preferred embodiment, see Figure 3 and Figure 10 The active gear plate 1 is provided with a protrusion 12, which is protrudingly arranged on the inner wall surface of the second end of the wedge-shaped track groove 11, and the protrusion 12 extends toward the cylindrical hole. The protrusion 12 is located at the end position of the second end of the wedge-shaped track groove 11. The protrusion 12 can be used to cooperate with the wedge-shaped track groove 11 to form a wedging cavity for clamping the roller 3. Of course, the protrusion 12 is also conducive to the roller 3 sliding at the second end of the wedge-shaped track groove 11. Enter the wedging groove 21 on the passive gear shaft 2, so that the clutch quickly switches to the wedging clamping of the roller 3. The protrusion 12 can be arranged between the assembly groove and the second end of the wedge-shaped track groove 11.

[0049] As a preferred embodiment, see Figure 5 and Figure 9, the wedging groove 21 is provided with a minor circular arc working surface, and the radius r' of the minor circular arc working surface is greater than or equal to the radius r of the roller 3. Such a setting is conducive to the wedging groove 21 being able to fit and connect with the roller 3, so that the driving gear disc 1 and the driven gear shaft 2 are stably wedged when the roller 3 is in the clamping position.

[0050] In this embodiment, refer to Figures 2 to 6 , the end cover 5 and the elastic pressing cover are assembled with a clearance on the cylindrical shaft body. The end cover 5 and the elastic pressing cover are respectively arranged on both sides of the driving gear disc 1. The two ends of the roller 3 are limited by the elastic pressing cover and the end cover 5. The height value H of the two end faces of the roller 3 is greater than the thickness h value of the driving gear disc 1, so as to form a clearance fit between the end cover 5 and the driving gear disc 1. When the driving gear disc 1 rotates, the end cover 5 and the driving gear disc 1 do not come into contact, which is beneficial to improving the transmission efficiency and making the clutch switching operation smooth.

[0051] In a specific implementation manner, the roller 3 is set as a cylindrical structure.

[0052] In this embodiment, refer to Figure 5 , both ends of the reset elastic member 4 respectively abut against the end side wall of the wedge-shaped track groove 11 of the driving gear disc 1 and the columnar surface of the roller 3. The reset elastic member 4 is adapted to apply a radial pre-pressing thrust to the roller 3, so as to keep the roller 3 away from the second end of the wedge-shaped track groove 11 and avoid the tendency state of entering the wedging and clamping position.

[0053] As a preferred implementation manner, refer to Figure 1 and Figure 2 , the elastic pressing cover includes a compression spring gasket 6 and a compression spring member 8 sleeved on the cylindrical shaft body. There are two end covers 5, and the two end covers 5 are arranged on both sides of the driving gear disc 1 in the axial direction; the two ends of the roller 3 are abutted and arranged between the two end covers 5, and the compression spring member 8 is installed between the end cover 5 adjacent to the driven gear shaft 2 and the compression spring gasket 6. Among them, the compression spring member 8 can be either a helical wire compression spring or a disc-shaped or ring-shaped thin sheet spring. It is sleeved on the cylindrical shaft body, and the compression spring member 8 is pressed between the two compression spring gaskets 6. Through the pre-pressure generated by the compression spring acting on the roller 3, when the clutch is switched to the transmission connection state, the frictional force of the roller 3 on the contact surface of the end cover 5 can overcome the elastic force of the reset elastic member 4 on the roller 3, so that the driving gear disc 1 and the driven gear shaft 2 can be wedged by clamping through the roller 3.

[0054] As a preferred implementation manner, refer to Figure 1 , Figure 2 , Figure 7 and Figure 8, the roller-type gear clutch further includes an axial retaining ring 7. The axial retaining ring 7 is abutted against the side of the end cover 5 away from the elastic crimping cover. An axial retaining ring groove is provided on the cylindrical shaft body, and the axial retaining ring 7 is snap-fitted in the axial retaining ring groove. The axial retaining ring 7 plays a role in axially limiting the end cover 5, the driving gear disk 1, and the elastic crimping cover.

[0055] As a preferred embodiment, refer to Figure 3 , the inner wall surface from the first end to the second end of the wedge-shaped track groove 11 is set as a straight surface wedge or an arc surface wedge; in the radial cross-section of the driving gear disk 1, the acute angle β formed between the normal perpendicular line at any point on the inner wall surface between the first end and the second end and the connection line from this point to the cylindrical hole is greater than the friction dead angle value at the wedge-shaped track groove 11. With this setting, the roller 3 can be driven by the wedge-shaped track groove 11 of the driving gear disk 1 and smoothly slide on the cylindrical shaft body without wedging, so as to smoothly enter the wedging cavity formed by the combination of the wedge-shaped track groove 11 and the wedge-shaped groove, and limit and wedge the driving gear disk 1 and the driven gear shaft 2. The friction dead angle value is related to the friction coefficients of the two mutually friction materials. For example, both the driving gear disk 1 and the roller 3 are made of steel, and the friction coefficient between them is 0.1. The friction dead angle value converted by the inverse trigonometric function is about 5°.

[0056] For the roller-type gear clutch provided by the present invention, by applying a force to operate the driving gear disk 1 to rotate relative to the driven gear shaft 2, the wedge-shaped track groove 11 and the wedging groove 21 can be brought closer to form a wedging cavity. The roller 3 can overcome the elastic force of the reset elastic member 4 under the crimping action of the end cover 5 and the elastic crimping cover, and slide towards the second end of the wedge-shaped track groove 11 to be wedge-connected and clamped in the wedging cavity, so that the driving gear disk 1 and the driven gear shaft 2 are in a transmission connection state; or the roller 3 can slide towards the first end of the wedge-shaped track groove 11 to disengage from the wedge connection of the wedging cavity, so that the driving gear disk 1 and the driven gear shaft 2 are in a decoupled rotation state; the driving gear disk 1 and the driven gear shaft 2 are switched between the transmission connection state and the decoupled rotation state. The roller-type gear clutch provided by the present invention has a simple overall structure, low cost, can perform bidirectional rotation operation for clutch, has convenient clutch switching, good transmission efficiency and reliability, and excellent actual clutch unlocking performance.

[0057] The roller-type gear clutch provided by the present invention can realize the free clutch switching of the forward and reverse rotation directions between the driving gear disk 1 and the driven gear shaft 2. After the driving gear disk 1 stops rotating, by applying a simple slight reverse rotation to the driving gear disk 1 or a forward push to the driven gear shaft 2, the roller 3 can be disengaged from the wedge connection, and then the driven gear shaft 2 can be released from the driving gear disk 1, so that the torque output transmission end mechanism can be released from the driving transmission chain end, and thus the driven gear shaft 2, that is, the torque output transmission end mechanism, can be freely manually operated.

[0058] The roller-type gear clutch provided by the present utility model is applicable to a two-way gear clutch for manual and automatic operation, and can fully meet the requirements of actual use conditions of mechanism devices or equipment, including automatic clutch, automatic and manual free switching, etc. When it is necessary to transmit large torque or ultra-large torque, it is possible to select to arrange multiple pairs or more pairs of wedge-shaped track grooves 11, rollers 3 and reset elastic members 4 that are radially opposite to each other on the driving gear disc 1 to withstand greater wedging pressure and transmit greater torque.

[0059] Obviously, the above-mentioned embodiments are only examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the creation of the present utility model.

Claims

1. A roller type gear clutch, characterized in that: include: A driving gear plate (1), adapted to be connected to the driving side gear set in driving relation; The active gear disc (1) is provided with a cylindrical hole and at least one pair of wedge-shaped track grooves (11) connected to the cylindrical hole, wherein the wedge-shaped track grooves (11) have a first end and a second end; two of the wedge-shaped track grooves (11) in any pair of the wedge-shaped track grooves (11) are arranged at opposite intervals along the circumferential direction of the active gear disc (1); A driven gear shaft (2) is suitable for being connected to the output side gear set in transmission; the driven gear shaft (2) has a cylindrical shaft body, the cylindrical shaft body is coaxially embedded in the cylindrical hole, at least one wedging groove (21) is provided on the outer cylindrical surface of the cylindrical shaft body, and the wedge-shaped track groove (11) and the wedging groove (21) are extended along the axial direction of the cylindrical shaft body; and a crimping switching assembly, comprising a roller (3), a reset elastic member (4), an end cover (5) and an elastic crimping cover, wherein one end of the reset elastic member (4) is fixedly connected to the active toothed disc (1), and the other end of the reset elastic member (4) is fixedly connected to the roller (3), and the reset elastic member (4) is suitable for crimping the roller (3) to the first end of the wedge-shaped track groove (11), the active toothed disc (1) and the roller (3) are arranged between the end cover (5) and the elastic crimping cover, the end cover (5) and the elastic crimping cover are fixedly sleeved on the outer periphery of the cylindrical shaft, and the roller (3) is crimped and arranged between the end cover (5) and the elastic crimping cover; Any of the wedge-shaped track grooves (11) is correspondingly provided with the roller (3) and the resetting elastic member (4); inferior arc working surfaces are symmetrically arranged on both sides of the groove surface of the wedging groove (21), and the radius of the inferior arc working surface is equal to or greater than the radius of the roller (3); When an external force acts on the active toothed disc (1) to rotate relative to the passive gear shaft (2) in a first direction, the wedge-shaped track groove (11) and the wedging groove (21) can be close to each other and combined into a wedging cavity, and the roller (3) can overcome the elastic force of the reset elastic member (4) under the pressing action of the end cover (5) and the elastic pressing cover, and slide toward the second end of the wedge-shaped track groove (11) to be wedged and clamped in the wedging cavity, so that the active toothed disc (1) and the passive gear shaft (2) are in a transmission connection state; When an external force acts on the active toothed disc (1) to rotate relative to the passive gear shaft (2) in a second direction, the roller (3) can slide toward the first end of the wedge-shaped track groove (11) under the pressure of the end cover (5) and the elastic pressure-contact cover and the elastic force of the reset elastic member (4) to disengage the wedging engagement of the wedging cavity, so that the active toothed disc (1) and the passive gear shaft (2) are in a decoupled rotation state; The first direction and the second direction are arranged opposite to each other, and the active toothed disc (1) and the passive gear shaft (2) are suitable for bidirectional clutch switching between the transmission connection state and the decoupled rotation state.

2. The roller type gear clutch according to claim 1, characterized in that: The roller type gear clutch also includes an axial retaining ring (7), the axial retaining ring (7) and the end cover (5) are arranged in abutment with each other on a side away from the elastic crimping cover, an axial retaining ring groove is provided on the cylindrical shaft body, and the axial retaining ring (7) is clamped and sleeved in the axial retaining ring groove.

3. The roller type gear clutch according to claim 1, characterized in that: The elastic crimping cover comprises a compression spring washer (6) and a compression spring member (8) sleeved on the cylindrical shaft body, two end covers (5) are provided, and the two end covers (5) are provided on both sides of the axial direction of the active gear plate (1); the two ends of the roller (3) are abutted and provided between the two end covers (5), and the compression spring member (8) is installed between the end cover (5) adjacent to the passive gear shaft (2) and the compression spring washer (6).

4. The roller type gear clutch according to any one of claims 1 to 3, characterized in that: The inner wall surface from the first end to the second end of the wedge-shaped track groove (11) is configured as a straight wedge shape or a curved wedge shape; On the radial cross section of the active toothed disc (1), an acute angle β formed between a normal perpendicular line at any point on the inner wall surface between the first end and the second end and a line connecting the point to the cylindrical hole is greater than a friction dead angle value at the wedge-shaped track groove (11).

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