A clutch

Abstract

The present invention discloses a clutch, including a clutch active part, a clutch passive part, a clutch passive spring, a roller, a slide post and a clutch pin, wherein the clutch active part is connected to the input shaft, and has a cylindrical concave cavity inside thereof, and the concave cavity can accommodate the clutch passive part; the clutch passive part is connected to the output shaft, and has a plurality of protruding convex teeth on the circumference of its edge; the clutch passive spring and the roller connected to each other are arranged between two adjacent convex teeth, and the side surface between the two adjacent convex teeth on the clutch passive part opposite to the inner side wall of the concave cavity is an arc surface, and the gap spacing between the arc surface and the inner side wall of the concave cavity gradually decreases in the direction from the clutch passive spring to the slide post; each convex tooth has a press-pull hole and a slide hole intersecting with the press-pull hole at one end. The clutch has a simple and compact structure, and the reliability of the clutch transmission is extremely high.

Description

Technical Field

[0001] The invention belongs to the technical field of clutches, and in particular relates to a clutch. Background Art

[0002] During the driving process of the vehicle, the driver can step on or release the clutch pedal as needed to temporarily separate and gradually engage the engine and the gearbox to cut off or transfer the power input from the engine to the gearbox. The clutch is a common component in mechanical transmission, which can separate or engage the transmission system at any time. However, most of the current clutches are complex in structure, large in size, and have a high failure rate. Especially for the clutch used in a micro-tillage machine, its complex structure and large size are extremely unsuitable, and the reliability of the transmission is unsatisfactory. In addition, the existing clutch contains a special clutch plate, which is mostly made of asbestos-based friction materials and composite fibers. When in use, especially during long-term use, it is very easy to produce a burnt plastic odor, which is not only unsafe to use, but also a kind of pollution. Summary of the invention

[0003] The object of the present invention is to solve the above technical problems and provide a clutch which has a simple and compact structure, extremely high clutch transmission reliability, and is safe and environmentally friendly.

[0004] The technical solution of the present invention is as follows: A clutch comprises a clutch active member, a clutch passive member, a clutch passive spring, a roller, a slide column and a clutch pin, wherein

[0005] The clutch active member is connected to the input shaft and has a cylindrical cavity inside, and the cavity can accommodate the clutch passive member;

[0006] The clutch driven component is connected to the output shaft and has a plurality of protruding convex teeth on the circumference of its edge, and the outer surface of the convex teeth is in smooth contact with the inner wall of the cavity so that the clutch driven component can rotate freely in the cavity; the clutch driven spring and the roller connected to each other are arranged between two adjacent convex teeth, and the side surface between the two adjacent convex teeth on the clutch driven component and the inner wall of the cavity is an arc surface, and the gap between the arc surface and the inner wall of the cavity gradually decreases in the direction from the clutch driven spring to the sliding column;

[0007] Each convex tooth is provided with a press-pull hole and a sliding hole intersecting with the press-pull hole at one end; the clutch pin is axially slidably provided in the press-pull hole, and the sliding column is axially slidably provided in the sliding hole; when the clutch pin is pulled outward, the sliding column is pushed out toward the other end of the sliding hole to push the roller to move in the direction of increasing the spacing, so that the roller will not be stuck in the gap; when the clutch pin is pressed, the sliding column retreats into the sliding hole under the action of the clutch passive spring and makes the roller move in the direction of reducing the spacing, so that the roller is firmly stuck in the gap.

[0008] Beneficial effects of the present invention: The present invention pushes the slide column out / back into the slide hole by pulling / pressing the clutch pin, so that the slide column moves the roller in the direction of increasing / decreasing the gap formed between the clutch active part and the clutch passive part, so that the roller is released / stuck in the above gap, that is, the purpose of disconnecting / connecting the clutch to the transmission is achieved; the working process of the entire clutch mainly relies on the contact and push cooperation between the clutch pin and the roller to control the clutch process, the structure is extremely ingenious and reliable, the overall structure is compact, and it is easy to process and manufacture. Since there are fewer parts involved in the clutch action, it is easier to install and maintain, and its reliability is naturally enhanced. It is particularly suitable for micro-tillage machines that are small in size. Moreover, since it is made of all-metal materials, the use of organic materials such as asbestos-based friction materials and composite fibers is avoided, and no sticky smell will be generated due to frictional heat during use, which is safe and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the present invention.

[0010] Figure 2 This is a schematic diagram of the end face of the clutch passive component.

[0011] Figure 3 It is a schematic diagram of the end faces of the clutch active component and the clutch passive component when the transmission is disconnected.

[0012] Figure 4 for Figure 3 A-A cross-sectional view of the structure shown.

[0013] Figure 5 It is a schematic diagram of the end faces of the clutch active component and the clutch passive component during transmission connection.

[0014] Figure 6 for Figure 5 A cross-sectional view of the structure shown (with Figure 4 The cutting position is the same).

[0015] Component number description: clutch active part 1, clutch passive part 2, clutch passive spring 3, roller 4, slide column 5, clutch pin 6, clutch spring 7, clutch plate 8, fastening screw 9, end bearing 10, convex tooth 201. DETAILED DESCRIPTION

[0016] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0018] like Figure 1As shown, a clutch includes a clutch active component 1, a clutch passive component 2, a clutch passive spring 3, a roller 4, a sliding column 5 and a clutch pin 6, wherein the clutch active component 1 of this embodiment is connected to an input shaft (not shown in the figure) to realize power input, and has a cylindrical cavity inside which can just accommodate the clutch passive component 2.

[0019] The clutch passive member 2 is coaxially arranged with the clutch active member 1 and connected to an output shaft (not shown in the figure) to achieve power output. Figure 2 , there are several protruding teeth 201 on the circumference of its edge, the teeth 201 are roughly fan-shaped, and the outer surface of the teeth 201 is in smooth contact with the inner wall of the cavity so that the clutch passive component 2 can rotate freely in the cavity. Preferably, the clutch passive component 2 is a plate-like structure, and the outer edge of the teeth 201 is in smooth contact with the inner wall of the cavity. Figure 3 —6. The clutch passive spring 3 and the roller 4 connected to each other are provided between two adjacent convex teeth 201. The side surface between the two adjacent convex teeth 201 on the clutch passive component 2 opposite to the inner wall of the cavity is an arc-shaped surface, and the gap spacing between the arc-shaped surface and the inner wall of the cavity gradually decreases in the direction from the clutch passive spring 3 to the sliding column 5; the above-mentioned gap is preferably made into an arc-shaped strip gap, and one end thereof gradually decreases toward the other end (the end where the roller 4 is located).

[0020] Each of the above-mentioned convex teeth 201 of the present embodiment has a press-pull hole and a sliding hole intersecting with the press-pull hole at one end, the clutch pin 6 is axially slidably provided in the press-pull hole, and the sliding column 5 is axially slidably provided in the sliding hole; when the clutch pin 6 is pulled outward, the sliding column 5 is pushed out toward the other end of the sliding hole to push the roller 4 to move in the direction of increasing the spacing, so that the roller 4 will not be stuck in the gap; when the clutch pin 6 is pressed, the sliding column 5 retreats into the sliding hole under the action of the clutch passive spring 3 and makes the roller 4 move in the direction of reducing the spacing, so that the roller 4 is firmly stuck in the gap.

[0021] When in use, the clutch pin 6 is pressed toward the press-pull hole. Due to the gradual contact between different parts of the clutch pin 6 (the clutch pin 6 can be adaptively processed into various shapes and structures as needed, such as a smaller diameter) and the end of the slide post 5 extending into the press-pull hole, the slide post 5 is gradually moved in the direction of reducing the above-mentioned gap under the action of the clutch passive spring 3, so that the slide post 5 in contact with the roller 4 is returned to the slide hole, that is, the extension amount of the slide post 5 in the slide hole at this time is H1, and the initial extension amount of the slide post 5 in the slide hole is H0, and H0>H1, and finally the roller 4 is firmly stuck in the above-mentioned gap, that is, the roller 4 in Figure 5 is in close contact with the point K1 where the inner wall of the above-mentioned concave cavity contacts and is stuck. At this time, the clutch active component 1 and the clutch passive component 2 are connected as a whole through the stuck roller 4 to achieve transmission connection. When the connection needs to be disconnected, the clutch pin 6 only needs to be pulled out of the press-pull hole for a distance. Since different parts of the clutch pin 6 (the diameter becomes larger at this time) gradually contact the end of the slide post 5 extending into the press-pull hole, the slide post 5 gradually extends out of the slide hole and pushes the roller 4, so that the roller 4 moves in the direction of increasing the above-mentioned gap, that is, the extension amount of the slide post 5 in the slide hole at this time finally returns to H0, so as to finally release the roller 4, that is, Figure 3 (The partial cross-section in this figure is Figure 4 As shown in the figure, the contact point K0 where the roller 4 contacts the inner wall of the concave cavity is only in smooth contact and is not stuck by tight contact. In this way, the clutch passive component 2 can rotate forward / reverse in the clutch active component 1, and the clutch active component 1 cannot achieve reliable transmission connection with the clutch passive component 2.

[0022] Preferably, in order to enable the clutch pin 6 to better drive the roller 4 through the sliding column 5, the press-pull hole is arranged along the thickness direction of the clutch passive component 2 and the sliding hole intersects it vertically, the roller 4 is arranged parallel to the press-pull hole, and the clutch passive spring 3 is arranged along the length direction of the gap and one end of it is connected to the cylindrical surface of the roller 4, and the other end is connected to the side of the convex tooth 201.

[0023] The specific implementation method of the clutch pin 6 of this embodiment driving the roller 4 through the slide post 5 is preferably the following structure: the press-draw hole is processed into a stepped hole, and the side wall of the larger hole section in the stepped hole is connected to one end of the slide hole; the clutch pin 6 is a screw structure with no threads on the surface, and its nut is axially slidable in the larger hole section, so that the diameter change between the nut of the clutch pin 6 and the screw section can be used to stably and simply realize the pushing effect on the slide post 5.

[0024] Preferably, in order to allow the clutch driven component 2 to rotate more freely in the concave cavity, an end bearing 10 is further provided at the bottom of the concave cavity, and the end surface of the end bearing 10 is connected to the end surface of the clutch driven component 2.

[0025] In order to better realize the pulling of the clutch pin 6, a cylindrical clutch spring 7 is sleeved on one end of the clutch pin 6 extending out of the pressure-drawing hole of the present embodiment, and a plate-shaped clutch disc 8 is used. The clutch disc 8 and the clutch pin 6 are vertically sleeved on the clutch pin 6, and when the fastening screw 9 on the end face of the clutch pin 6 is tightened, the elastic force of the clutch spring 7 is used to push the clutch disc 8 open, so that the clutch pin 6 tends to be pulled outward from the pressure-drawing hole, that is, it is in a state of transmission disconnection, and when the clutch disc 8 is pushed and squeezed, the clutch pin 6 is pressed into the pressure-drawing hole by a certain distance, so that the transmission is connected.

[0026] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A clutch, characterized in that: It includes a clutch active part, a clutch passive part, a clutch passive spring, a roller, a slide column and a clutch pin, wherein the clutch active part is connected to the input shaft and has a cylindrical cavity inside, and the cavity can accommodate the clutch passive part; The clutch driven component is connected to the output shaft and has a plurality of protruding convex teeth on the circumference of its edge. The outer surface of the convex teeth is in smooth contact with the inner wall of the cavity so that the clutch driven component can rotate freely in the cavity. The clutch driven spring and the roller connected to each other are arranged between two adjacent convex teeth. The side surface between the two adjacent convex teeth on the clutch driven component and the inner wall of the cavity is an arc surface, and the gap between the arc surface and the inner wall of the cavity gradually decreases in the direction from the clutch driven spring to the sliding column. Each of the two rollers has a press-pull hole and a slide hole intersecting with the press-pull hole at one end, the clutch pin is axially slidably arranged in the press-pull hole, and the slide column is axially slidably arranged in the slide hole; when the clutch pin is pulled outward, the slide column is pushed out toward the other end of the slide hole to push the roller to move in the direction of increasing the spacing, so that the roller will not be stuck in the gap; when the clutch pin is pressed, the slide column retreats into the slide hole under the action of the clutch passive spring and makes the roller move in the direction of reducing the spacing, so that the roller is firmly stuck in the gap; The clutch passive component is in a plate-like structure, and the outer edge of the convex tooth is smoothly fitted with the inner wall of the concave cavity; The press-pull hole is arranged along the thickness direction of the clutch passive component and the sliding hole intersects it perpendicularly, the roller is arranged in parallel with the press-pull hole, the clutch passive spring is arranged along the length direction of the gap and one end of the spring is connected to the cylindrical surface of the roller and the other end is connected to the side surface of the convex tooth; The press-draw hole is a stepped hole, and the side wall of the larger hole section in the stepped hole is connected to one end of the sliding hole; the clutch pin is a screw structure with no threads on the surface, and its nut is axially slidable in the larger hole section.

2. The clutch according to claim 1, characterized in that: An end face bearing is also arranged at the bottom of the concave cavity, and the end face of the end face bearing is connected to the end face of the clutch passive component.

3. The clutch according to claim 1, characterized in that: A clutch spring is sleeved on one end of the clutch pin extending out of the press-pull hole, and the clutch disc is detachably fixed to the end of the clutch pin and compresses the clutch spring so that the elastic restoring force of the clutch spring pushes the clutch disc to pull the clutch pin out of the press-pull hole to the extreme position.

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