Clutch state locking structure of rotary clutch

Abstract

The present invention belongs to the technical field of clutches, and in particular, relates to a clutch state locking structure of a rotary-controlled clutch. In the present invention, the rotary-controlled clutch includes a clutch member arranged between an active rotating member and a driven rotating member, the clutch member is connected to a clutch control rotating body, and when the clutch control rotating body rotates, the active rotating member and the driven rotating member can be circumferentially positioned or circumferentially separated, and the clutch control rotating body is provided with an elastic check structure that can prevent the clutch control rotating body from rotating after the clutch control rotating body is rotated. In the present invention, an elastic check structure is provided between the two rotating members to ensure that the two rotating members can maintain a stable state when they are in a transmission connection state or a mutually disengaged state, and will not easily switch between the two states due to some accidental external factors, thereby ensuring that the product provided with the clutch mechanism is smooth to use and preventing accidents that cause harm to the user.

Description

Technical Field

[0001] The invention belongs to the technical field of clutches, and in particular relates to a clutch state locking structure of a rotary-controlled clutch. Background Art

[0002] The clutch mechanism is a commonly used structure in the mechanical transmission process, which can selectively realize the transmission connection or mutual disconnection between two different components to meet the different needs of users in different usage scenarios.

[0003] For example, a Chinese utility model patent discloses a driving wheel for an electric scooter [application number: 201720468425.4]. The utility model patent includes a tire, a wheel core and a pulley arranged on one side of the wheel core. A clutch device is provided between one side of the wheel core and the pulley. The clutch device can connect or separate the wheel core and the pulley in a transmission manner. The clutch device includes an end face gear. The right side of the end face gear is provided with at least three semi-cylinders extending to the right and having an inclined top surface; the left side of the pulley is provided with inclined slopes corresponding to the inclined top surfaces of the semi-cylinders on the right side of the end face gear, and each inclined slope is provided in a concave hole on the left side of the pulley; the left side of the end face gear and the right side of the wheel core are respectively provided with end face helical teeth that can be meshed or separated; the annular surface of the end face gear is provided with an annular groove, and the annular groove is provided with an O-ring, and the top surface of the O-ring is in sliding contact with the relative inner annular surface of the wheel core.

[0004] The utility model is applied to a clutch device between a wheel core and a pulley, and can realize transmission connection or mutual disengagement between the wheel core and the pulley as needed, but the clutch device cannot guarantee the stability of these two states, that is, during use, it is easy for some accidental external factors to cause the wheel core and the pulley to switch between the two states of transmission connection and mutual disengagement, which brings obstacles to the user and even causes harm to the user. Summary of the invention

[0005] The object of the present invention is to provide a clutch state locking structure of a rotary clutch in view of the above problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A clutch state locking structure of a rotary control clutch, the rotary control clutch includes a clutch member arranged between an active rotating member and a driven rotating member, the clutch member is connected to a clutch control rotating body and can circumferentially position or circumferentially separate the active rotating member and the driven rotating member when the clutch control rotating body rotates, and the clutch control rotating body is provided with an elastic non-return structure which can prevent the clutch control rotating body from rotating when the clutch control rotating body is rotated.

[0008] In the above-mentioned clutch state locking structure of the rotary clutch, the clutch member and the active rotating member are circumferentially positioned and axially slidably connected, the clutch control rotating body is fixedly connected to the control knob, and the elastic non-return structure is connected between the control knob and the active rotating member.

[0009] In the above-mentioned clutch state locking structure of the rotary clutch, the elastic check structure includes an annular elastic ring, which is fixed on the control knob, and is provided with a plurality of concave and convex deformable teeth. The outer end of the active rotating part is provided with a plurality of concave and convex bodies. The annular elastic ring is sleeved on the periphery of the active rotating part, and the concave and convex deformable teeth of the annular elastic ring pass over the concave and convex bodies under the drive of the control knob to achieve rotation blocking.

[0010] In the above-mentioned clutch state locking structure of the rotary clutch, an annular groove is provided on the periphery of the active rotating member, the concave-convex body is arranged in the annular groove, and the annular elastic ring is embedded in the annular groove.

[0011] In the above-mentioned clutch state locking structure of the rotary clutch, the annular elastic ring is provided with an installation notch for the annular elastic ring to be installed into the annular groove.

[0012] In the above-mentioned clutch state locking structure of the rotary clutch, the annular elastic ring is in a polygonal ring shape, each edge of which is arc-shaped and concave inward, the concave and convex deformation teeth are arranged in the middle of the edge, and deformation-promoting notches are respectively provided on both sides of the edge.

[0013] In the above-mentioned clutch state locking structure of the rotary clutch, the annular elastic ring is fixed to the control knob by a first screw, and the control knob is fixed to the clutch control rotating body by a second screw.

[0014] In the above-mentioned clutch state locking structure of the rotary clutch, a groove is provided at the center of one side of the control knob facing the clutch control rotating body, the outer end shape of the clutch control rotating body is adapted to the shape of the groove, and the outer end of the clutch control rotating body is arranged in the groove.

[0015] In the above-mentioned clutch state locking structure of the rotary clutch, the top of the concave-convex variable tooth is in an arc shape; the top of the concave-convex body is in an arc shape.

[0016] In the above-mentioned clutch state locking structure of the rotary controlled clutch, the clutch member is provided with a plurality of sliding protrusions spaced apart in the circumferential direction, and the clutch control rotating body is provided with a plurality of spiral grooves spaced apart in the circumferential direction, and the spiral grooves are arranged one-to-one with the sliding protrusions and are slidably connected.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. The present invention provides an elastic non-return structure between the two rotating parts to ensure that the two rotating parts can maintain a stable state when they are in a transmission connection state or a mutually disengaged state, and will not easily switch between the two states due to some accidental external factors, thereby ensuring that the product equipped with the clutch mechanism is smooth to use and preventing accidents that cause harm to users.

[0019] 2. The present invention has an installation notch on the annular elastic ring, so that the annular elastic ring is C-shaped. When the annular elastic ring is installed into the annular groove, the installation notch can be compressed to reduce the inner diameter of the annular elastic ring, which is convenient for installation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a cross-sectional view of the present invention;

[0021] Figure 2 It is a partial structural schematic diagram of the present invention;

[0022] Figure 3 is an exploded view of the present invention;

[0023] Figure 4 It is a structural schematic diagram of an annular elastic ring;

[0024] In the figure: active rotating part 1, driven rotating part 2, clutch part 3, clutch control rotating body 7, spiral slide groove 8, control knob 9, annular elastic ring 10, concave-convex deformation teeth 11, concave-convex body 12, annular groove 13, sinking groove 18, deformation-promoting notch 19, first screw 20, second screw 21, installation notch 22, sliding protrusion 31. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 As shown, a clutch state locking structure of a rotary-controlled clutch is provided. The rotary-controlled clutch includes a clutch member 3 arranged between an active rotating member 1 and a driven rotating member 2. A clutch control rotating body 7 is connected to the clutch member 3 and can circumferentially position or circumferentially separate the active rotating member 1 and the driven rotating member 2 when the clutch control rotating body 7 rotates. An elastic non-return structure is provided on the clutch control rotating body 7 to prevent the clutch control rotating body 7 from rotating when the clutch control rotating body 7 is rotated.

[0027] A clutch 3 is provided between the active rotating member 1 and the driven rotating member 2. The clutch 3 can be actuated to make the active rotating member 1 and the driven rotating member 2 transmission connected (circumferentially fixed) or disengaged from each other (circumferentially separated). The elastic non-return structure can lock the clutch 3 so that the clutch 3 cannot be easily actuated, that is, under the influence of accidental external factors, the clutch 3 will not be actuated to change the connection state between the active rotating member 1 and the driven rotating member 2. Therefore, the present invention provides a clutch state locking structure between the two rotating members to ensure that the two rotating members can maintain a stable state when they are in a transmission connection state or a disengaged state, and will not easily switch between the two states due to some accidental external factors, thereby ensuring that the product provided with the clutch mechanism is smooth to use and preventing accidents that cause harm to users.

[0028] The active rotating member 1 can drive the clutch member 3 to rotate synchronously in the circumferential direction, and the clutch member 3 can slide axially relative to the active rotating member 1, which can be achieved through the cooperation between the axial groove and the slide bar. For example, an axial groove is provided on the outer surface of the active rotating member 1, which is recessed into the inside of the active rotating member 1 and extends along the axis of the active rotating member 1. A slide bar protrudes from the surface of the clutch member 3, and the size and shape of the slide bar are adapted to the axial groove, and the slide bar is slidably connected in the axial groove.

[0029] The clutch 3 achieves transmission connection or mutual separation with the driven rotating member 2 by sliding along the axial direction of the active rotating member 1. For example, a concave-convex meshing structure can be provided between the clutch 3 and the driven rotating member 2. When the clutch 3 moves axially forward, the concave-convex meshing structure meshes to circumferentially position the active rotating member 1 and the driven rotating member 2. When the clutch 3 moves axially backward, the concave-convex meshing structure disengages to circumferentially separate the active rotating member 1 and the driven rotating member 2.

[0030] The action of the clutch member 3 sliding along the axis of the active rotating member 1 is achieved by a rotation drive structure. The present invention does not limit the specific structure of the drive structure that can convert the rotational motion into the linear motion. A screw slider structure can be used, or a combination of a screw and a slider can be used. Figure 1-3As shown, specifically, the clutch member 3 is circumferentially positioned with the active rotating member 1 and axially slidably connected, the clutch control rotating body 7 is fixedly connected with a control knob 9, for example, the control knob 9 can be fixed on the clutch control rotating body 7 by a second screw 21, the elastic non-return structure is connected between the control knob 9 and the active rotating member 1, the clutch member 3 is provided with a plurality of sliding protrusions 31 spaced apart in the circumferential direction, the clutch control rotating body 7 is provided with a plurality of spiral grooves 8 spaced apart in the circumferential direction, the spiral grooves 8 and the sliding protrusions 31 are connected to each other. They are arranged in a one-to-one correspondence and slidably connected. A control knob 9 is fixedly connected to the clutch control rotating body 7. The clutch state locking structure is arranged between the control knob 9 and the active rotating member 1. Rotating the control knob 9 causes the clutch control rotating body 7 to rotate synchronously. The spiral grooves 8 distributed at intervals on the surface of the clutch control rotating body 7 in the circumferential direction rotate, and the sliding protrusions 31 located in the spiral grooves 8 slide along the spiral grooves 8. Since the spiral grooves 8 are spirally shaped along the axial direction of the active rotating member 1, the sliding protrusions 31 drive the clutch member 3 to slide along the axial centerline direction of the active rotating member 1.

[0031] The rotation control knob 9 may be a polygon or a circle with an inwardly concave arc, so that the user has a suitable force application point when rotating.

[0032] like Figure 3 As shown, the clutch 3 is cylindrical and sleeved on the active rotating member 1. A circumferential positioning axial sliding structure is provided between the clutch 3 and the active rotating member 1. A plurality of convex teeth evenly distributed in the circumferential direction are provided at the front end of the clutch 3. A plurality of grooves evenly distributed in the circumferential direction are provided on the inner side of the driven rotating member 2. The convex teeth can be arranged corresponding to the grooves and can be plugged into each other. The clutch 3 slides along the axial centerline direction of the active rotating member 1 so that the convex teeth are inserted into or out of the grooves. When the convex teeth are inserted into the grooves and mesh with each other, the active rotating member 1 is transmission-connected with the driven rotating member 2; when the convex teeth are out of the grooves, the active rotating member 1 and the driven rotating member 2 are separated from each other. The convex teeth and the grooves are evenly distributed in the circumferential direction, which facilitates the meshing action of the driven rotating member 2 and the clutch 3. At the same time, when the driven rotating member 2 is meshed with the clutch 3, the meshing force can be evenly distributed, thereby enhancing stability.

[0033] Preferably, the front end of the convex tooth is provided with at least one first introduction bevel and the notch of the groove is provided with at least one second introduction bevel. The first introduction bevel and the second introduction bevel are respectively provided at the relative positions of the convex tooth and the groove to facilitate the convex tooth to be inserted into the groove and mesh with the groove.

[0034] Combination Figure 1 , Figure 2 and Figure 4As shown, the clutch state locking structure includes an annular elastic ring 10, on which a plurality of concave-convex deformation teeth 11 are provided, and a plurality of concave-convex bodies 12 are provided at the outer end of the driven rotating member 2, the annular elastic ring 10 is sleeved on the periphery of the active rotating member 1, and the concave-convex deformation teeth 11 of the annular elastic ring 10 pass over the concave-convex bodies 12 to achieve rotation blocking, the annular elastic ring 10 is fixedly connected to the control knob 9, the periphery of the active rotating member 1 is provided with an annular groove 13, the concave-convex body 12 is arranged in the annular groove 13, and the annular elastic ring 10 is embedded in the annular groove 13, the annular elastic ring 10 is in a polygonal ring shape, and each edge thereof is arc-shaped inwardly concave, the concave-convex deformation teeth 11 are arranged in the middle of the edge, and deformation-promoting notches 19 are respectively provided on both sides of the edge.

[0035] Rotating the control knob 9 drives the annular elastic ring 10 to rotate synchronously. For example, this can be achieved by fixing the annular elastic ring 10 on the control knob 9 through the first screw 20, until it is rotated to the position where the concave-convex deformation tooth 11 passes over the concave-convex body 12, for example, the concave-convex body 12 is located between the two concave-convex deformation teeth 11, so that the annular elastic ring 10 and the concave-convex body 12 are clamped with each other, and then the clutch 3 is locked. The annular elastic ring 10 is a polygonal ring, and each side of it is arc-shaped and concave-convex deformation tooth 11 is arranged in the middle of the side, and deformation-promoting notches 19 are respectively provided on both sides of the side, so that the annular elastic ring 10 can be deformed by compressing the deformation-promoting notch 19, thereby facilitating the concave-convex deformation tooth 11 to pass over the concave-convex body 12.

[0036] Preferably, the annular elastic ring 10 is provided with an installation notch 22 for the annular elastic ring 10 to be installed into the annular groove 13, that is, the annular elastic ring 10 is C-shaped, so that when the annular elastic ring 10 is installed into the annular groove 13, the installation notch can be compressed to reduce the inner diameter of the annular elastic ring 10, thereby facilitating the installation operation.

[0037] Preferably, the top of the concave-convex deformable tooth 11 is in an arc shape; the top of the concave-convex body 12 is in an arc shape, which can make the clamping process between the annular elastic ring 10 and the concave-convex body 12 smoother.

[0038] like Figure 1 As shown, a sink groove 18 is provided at the center of one side of the control knob 9 facing the clutch control rotating body 7, the shape of the outer end of the clutch control rotating body 7 is adapted to the shape of the sink groove 18, and the outer end of the clutch control rotating body 7 is arranged in the sink groove 18, which can reduce the size of the entire structure and make the structure more compact.

[0039] The working principle of the present invention is: when a transmission connection is required, the control knob 9 is rotated to drive the clutch control rotating body 7 to rotate synchronously, and the sliding protrusion 31 slides along the spiral slide groove 8 to drive the clutch member 3 to slide away from the control knob 9, and the active rotating member 1 is connected with the driven rotating member 2. At this time, the concave-convex deformation tooth 11 just passes over the concave-convex body 12, so that the concave-convex body 12 and the annular elastic ring 10 are clamped to each other; when separation is required, a large force is first applied in the direction of rotating the control knob 9, so that the concave-convex body 12 escapes from the clamping force with the annular elastic ring 10 and rotates in the direction, and the sliding protrusion 31 slides along the spiral slide groove 8. The slide groove 8 slides, thereby driving the clutch member 3 to slide close to the control knob 9, and the active rotating member and the driven rotating member 2 are separated from each other. At this time, the concave-convex deformable tooth 11 on the other side just passes over the concave-convex body 12, so that the concave-convex body 12 and the annular elastic ring 10 are clamped with each other. Therefore, the present invention provides an elastic non-return structure between the two rotating members to ensure that the two rotating members can maintain a stable state when they are in a transmission connection state or a disengaged state, and will not easily switch between the two states due to some accidental external factors, thereby ensuring that the product equipped with the clutch mechanism is smooth to use and preventing accidents that cause harm to users.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0041] Although the terms active rotating member 1, driven rotating member 2, clutch member 3, clutch control rotating body 7, spiral slide groove 8, control knob 9, annular elastic ring 10, concave-convex deformation tooth 11, concave-convex body 12, annular groove 13, sinking groove 18, deformation-promoting notch 19, first screw 20, second screw 21, installation notch 22, and sliding protrusion 31 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A clutch state locking structure of a rotary control clutch, the rotary control clutch comprising a clutch member (3) arranged between an active rotating member (1) and a driven rotating member (2), the clutch member (3) being connected to a clutch control rotating body (7) and being able to circumferentially position or circumferentially separate the active rotating member (1) and the driven rotating member (2) when the clutch control rotating body (7) rotates, characterized in that: The clutch member (3) and the active rotating member (1) are circumferentially positioned and axially slidably connected, the clutch control rotating body (7) is fixedly connected to a control knob (9), and an elastic non-return structure is connected between the control knob (9) and the active rotating member (1); The control knob (9) is provided with an elastic non-return structure capable of preventing the clutch control rotating body (7) from rotating when the clutch control rotating body (7) is rotated; The elastic non-return structure comprises an annular elastic ring (10), the annular elastic ring (10) is fixed on the control knob (9), a plurality of concave-convex deformable teeth (11) are provided on the annular elastic ring (10), a plurality of concave-convex bodies (12) are provided at the outer end of the active rotating member (1), the annular elastic ring (10) is sleeved on the outer periphery of the active rotating member (1), and the concave-convex deformable teeth (11) of the annular elastic ring (10) pass over the concave-convex bodies (12) under the drive of the control knob (9) to achieve rotation blocking; The active rotating member (1) is provided with an annular groove (13) on its periphery, the concave-convex body (12) is arranged in the annular groove (13), and the annular elastic ring (10) is embedded in the annular groove (13); The annular elastic ring (10) is in the shape of a polygonal ring, each edge of which is concave inwardly in an arc shape, the concave-convex deformation teeth (11) are arranged in the middle of the edge, and deformation-promoting notches (19) are respectively provided on both sides of the edge.

2. The clutch state locking structure of the rotary clutch according to claim 1, characterized in that: The annular elastic ring (10) is provided with an installation notch (22) for the annular elastic ring (10) to be installed into the annular groove (13).

3. The clutch state locking structure of the rotary clutch according to claim 1 or 2, characterized in that: The annular elastic ring (10) is fixed to the control knob (9) via a first screw (20), and the control knob (9) is fixed to the clutch control rotating body (7) via a second screw (21).

4. The clutch state locking structure of the rotary clutch according to claim 1 or 2, characterized in that: A recessed groove (18) is provided at the center of a side of the control knob (9) facing the clutch control rotating body (7); the shape of the outer end of the clutch control rotating body (7) is adapted to the shape of the recessed groove (18), and the outer end of the clutch control rotating body (7) is arranged in the recessed groove (18).

5. The clutch state locking structure of the rotary clutch according to claim 1 or 2, characterized in that: The top of the concave-convex deformable tooth (11) is in the shape of a circular arc; the top of the concave-convex body (12) is in the shape of a circular arc.

6. The clutch state locking structure of the rotary clutch according to any one of claims 1 to 2, characterized in that: The clutch member (3) is provided with a plurality of sliding protrusions (31) spaced apart in the circumferential direction, and the clutch control rotating body (7) is provided with a plurality of spiral sliding grooves (8) spaced apart in the circumferential direction. The spiral sliding grooves (8) are arranged in one-to-one correspondence with the sliding protrusions (31) and are slidably connected.

Images