Clutch mechanism

Abstract

The present invention belongs to the field of transmission technology, and in particular, relates to a clutch mechanism. The present invention comprises a first rotating member, and a second rotating member is provided on the outer sleeve of the first rotating member for axial positioning and circumferential rotation connection. The first rotating member or the second rotating member is provided with a controlled clutch structure, and when the controlled clutch structure is actuated, the second rotating member can be circumferentially positioned relative to the first rotating member or can be circumferentially rotatable relative to the first rotating member, and the controlled clutch structure is provided with a clutch state locking structure. 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 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 users.

Description

Technical Field

[0001] The invention belongs to the field of transmission technology, and in particular relates to a clutch mechanism. 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 clutch device used between the wheel core and the pulley in the utility model can realize the 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 mechanism 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 mechanism comprises a first rotating member, on the outer periphery of which is provided an axially positioned and circumferentially rotatably connected second rotating member, the first rotating member or the second rotating member is provided with a controlled clutch structure, and when the controlled clutch structure is actuated, the second rotating member can be circumferentially positioned relative to the first rotating member or can be circumferentially rotatable relative to the first rotating member, and the controlled clutch structure is provided with a clutch state locking structure.

[0008] In the above-mentioned clutch mechanism, the controlled clutch structure is arranged on the first rotating member, and the controlled clutch structure includes a clutch member that can move axially along the first rotating member to position the second rotating member circumferentially relative to the first rotating member or can make the second rotating member circumferentially rotatable relative to the first rotating member, and the clutch member is connected to a driving structure that can convert rotational motion into axial movement of the clutch member along the first rotating member, and the clutch state locking structure is arranged between the driving structure and the first rotating member.

[0009] In the above-mentioned clutch mechanism, an annular space is provided between the first rotating member and the second rotating member, and the clutch member is arranged in the annular space.

[0010] In the above-mentioned clutch mechanism, a concave-convex meshing structure is provided between the clutch member and the second rotating member. When the clutch member moves axially forward, the concave-convex meshing structure engages to circumferentially position the first rotating member and the second rotating member, and when the clutch member moves axially backward, the concave-convex meshing structure disengages to circumferentially separate the first rotating member and the second rotating member.

[0011] In the above-mentioned clutch mechanism, the clutch member is cylindrical and is sleeved on the first rotating member. A circumferential positioning axial sliding structure is provided between the clutch member and the first rotating member. A plurality of convex teeth evenly distributed in the circumferential direction are provided at the front end of the clutch member. A plurality of grooves evenly distributed in the circumferential direction are provided on the inner side of the second rotating member. The convex teeth can be arranged corresponding to the grooves and can be plugged into each other.

[0012] In the above-mentioned clutch mechanism, the front end of the protruding tooth is provided with at least one first introduction slope; the notch of the groove is provided with at least one second introduction slope.

[0013] In the above-mentioned clutch mechanism, the driving structure includes a rotating driving member, the rotating driving member is provided with a plurality of spiral grooves distributed at intervals in the circumferential direction, the clutch member is provided with a plurality of sliding protrusions distributed at intervals in the circumferential direction, and the spiral grooves and sliding protrusions are arranged in one-to-one correspondence and are slidably connected.

[0014] In the above-mentioned clutch mechanism, the rotation driving member is fixedly connected with a control knob, and the clutch state locking structure is arranged between the control knob and the first rotating member.

[0015] In the above-mentioned clutch mechanism, the clutch state locking structure includes an annular damping ring, on which a plurality of concave-convex deformable teeth are provided, and a plurality of concave-convex bodies are provided at the outer end of the first rotating member. The annular damping ring is sleeved on the outer periphery of the first rotating member, and the concave-convex deformable teeth of the annular damping ring pass over the concave-convex bodies to achieve rotation blocking, and the annular damping ring is fixedly connected to the control knob.

[0016] In the above-mentioned clutch mechanism, an annular groove is provided on the periphery of the first rotating member, the concave-convex body is arranged in the annular groove, and the annular damping ring is embedded in the annular groove.

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

[0018] 1. The present invention is provided with a clutch state locking 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 in use and preventing accidents that cause harm to users.

[0019] 2. The convex teeth and the concave grooves of the present invention are evenly distributed in the circumferential direction, which facilitates the meshing action of the second rotating member and the clutch member. At the same time, when the second rotating member and the clutch member are meshed, the meshing force can be evenly distributed, thereby enhancing stability.

[0020] 3. The present invention provides a first lead-in slope and a second lead-in slope at relative positions of the convex tooth and the concave groove, respectively, to facilitate the convex tooth to be inserted into the concave groove and meshed with the concave groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a cross-sectional view of the present invention;

[0022] Figure 2 It is a partial structural schematic diagram of the present invention;

[0023] Figure 3 is an exploded view of the present invention;

[0024] Figure 4 is a schematic structural diagram of a second rotating member;

[0025] In the figure: a first rotating member 1, a second rotating member 2, a clutch member 3, an annular space 4, a convex tooth 5, a groove 6, a rotating drive member 7, a spiral slide groove 8, a control knob 9, an annular damping ring 10, concave-convex deformation teeth 11, a concave-convex body 12, an annular groove 13, a sliding protrusion 31, a first introduction slope 51, and a second introduction slope 61. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1As shown, a clutch mechanism comprises a first rotating member 1, on the outer periphery of which is provided an axially positioned and circumferentially rotatably connected second rotating member 2, characterized in that a controlled clutch structure is provided on the first rotating member 1 or the second rotating member 2, and when the controlled clutch structure is actuated, the second rotating member 2 can be circumferentially positioned relative to the first rotating member 1 or can be circumferentially rotatable relative to the first rotating member 1, and a clutch state locking structure is provided on the controlled clutch structure.

[0028] The first rotating member 1 and the second rotating member 2 are two different rotating members, and a controlled clutch structure is provided between the two. The controlled clutch structure can make the first rotating member 1 and the second rotating member 2 transmission connected (circumferentially fixed) or disengaged from each other (circumferentially separated) through action. The clutch state locking structure can lock the controlled clutch structure so that the controlled clutch structure cannot be easily actuated, that is, under the influence of external accidental factors, the controlled clutch structure will not be actuated to change the connection state between the first rotating member 1 and the second 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.

[0029] Specifically, the controlled clutch structure is arranged on the first rotating member 1, and the controlled clutch structure includes a clutch member 3 that can move axially along the first rotating member 1 so that the second rotating member 2 is circumferentially positioned relative to the first rotating member 1 or can make the second rotating member 2 circumferentially rotatable relative to the first rotating member 1, and the clutch member 3 is connected to a driving structure that can convert the rotational motion into axial movement of the clutch member 3 along the first rotating member 1, and the clutch state locking structure is arranged between the driving structure and the first rotating member 1.

[0030] The first 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 first rotating member 1, which can be achieved through the cooperation between the groove and the slide bar. For example, a groove is provided on the outer surface of the first rotating member 1, which is recessed into the inside of the first rotating member 1 and extends along the axial center line direction of the first rotating member 1. A slide bar protrudes from the surface of the clutch member 3. The slide bar is adapted to the size and shape of the groove, and the slide bar is slidably connected in the groove.

[0031] The clutch member 3 achieves transmission connection or mutual separation with the second rotating member 2 by sliding along the axial direction of the first rotating member 1. For example, a concave-convex meshing structure can be provided between the clutch member 3 and the second rotating member 2. When the clutch member 3 moves axially forward, the concave-convex meshing structure meshes to circumferentially position the first rotating member 1 and the second rotating member 2. When the clutch member 3 moves axially backward, the concave-convex meshing structure disengages to circumferentially separate the first rotating member 1 and the second rotating member 2.

[0032] The action of the clutch member 3 sliding along the axis of the first 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 and Figure 2 As shown, the driving structure includes a rotary driving member 7, on which a plurality of spiral grooves 8 are spaced apart in a circumferential direction, and on which a plurality of sliding protrusions 31 are spaced apart in a circumferential direction, and on which a clutch member 3 is spaced apart, the spiral grooves 8 and the sliding protrusions 31 are arranged in a one-to-one correspondence and are slidably connected, and a control knob 9 is fixedly connected to the rotary driving member 7, and the clutch state locking structure is arranged between the control knob 9 and the first rotating member 1, and rotating the control knob 9 causes the rotary driving member 7 to rotate synchronously, and the spiral grooves 8 spaced apart in a circumferential direction on the surface of the rotary driving member 7 rotate, and the sliding protrusions 31 located in the spiral grooves 8 slide along the spiral grooves 8, and since the spiral grooves 8 are spirally shaped along the axial direction of the first rotating member 1, the sliding protrusions 31 drive the clutch member 3 to slide along the axial centerline direction of the first rotating member 1.

[0033] 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.

[0034] Preferably, an annular space 4 is provided between the first rotating member 1 and the second rotating member 2, and the clutch member 3 is arranged in the annular space 4, so that the movement of the clutch member 3 can be limited in the annular space 4, playing a certain limiting and guiding role.

[0035] Combination Figure 3 and Figure 4As shown, the clutch member 3 is cylindrical and sleeved on the first rotating member 1. A circumferential positioning axial sliding structure is provided between the clutch member 3 and the first rotating member 1. A plurality of convex teeth 5 evenly distributed in the circumferential direction are provided at the front end of the clutch member 3. A plurality of grooves 6 evenly distributed in the circumferential direction are provided on the inner side of the second rotating member 2. The convex teeth 5 can be arranged corresponding to the grooves 6 and can be plugged into each other. The clutch member 3 slides along the axial centerline direction of the first rotating member 1 so that the convex teeth 5 are inserted into or out of the grooves 6. When the convex teeth 5 are inserted into the grooves 6 and mesh with each other, the first rotating member 1 is transmission-connected with the second rotating member 2; when the convex teeth 5 are out of the grooves 6, the first rotating member 1 and the second rotating member 2 are separated from each other. The convex teeth 5 and the grooves 6 are evenly distributed in the circumferential direction, which facilitates the meshing action of the second rotating member 2 and the clutch member 3. At the same time, when the second rotating member 2 is meshed with the clutch member 3, the meshing force can be evenly distributed to enhance stability.

[0036] Preferably, the front end of the convex tooth 5 is provided with at least one first introduction bevel 51; the notch of the groove 6 is provided with at least one second introduction bevel 61, and the first introduction bevel 51 and the second introduction bevel 61 are respectively provided at the relative positions of the convex tooth 5 and the groove 6 to facilitate the convex tooth 5 to be inserted into the groove 6 and mesh with the groove 6.

[0037] Combination Figure 1 and Figure 2 As shown, the clutch state locking structure includes an annular damping ring 10, on which a plurality of concave-convex deformable teeth 11 are provided, and a plurality of concave-convex bodies 12 are provided at the outer end of the second rotating member 2. The annular damping ring 10 is sleeved on the periphery of the first rotating member 1, and the concave-convex deformable teeth 11 of the annular damping ring 10 pass over the concave-convex bodies 12 to achieve rotation blocking, the annular damping ring 10 is fixedly connected to the control knob 9, an annular groove 13 is provided on the periphery of the first rotating member 1, the concave-convex bodies 12 are arranged in the annular groove 13, and the annular damping ring 10 is embedded in the annular groove 13.

[0038] Turning the control knob 9 drives the annular damping ring 10 to rotate synchronously until it rotates to the position where the concavo-convex deformation tooth 11 passes over the concavo-convex body 12, for example, the concavo-convex body 12 is located between the two concavo-convex deformation teeth 11, so that the annular damping ring 10 and the concavo-convex body 12 are clamped with each other, and then the clutch 3 is locked, wherein the annular damping ring 10 is a polygonal ring, and each edge of which is arc-shaped and concave-convex deformation tooth 11 is arranged in the middle of the edge, and deformation-promoting notches are respectively provided on both sides of the edge, so that the annular damping ring 10 can be deformed by compressing the deformation-promoting notch, thereby facilitating the concavo-convex deformation tooth 11 to pass over the concavo-convex body 12.

[0039] Preferably, the annular damping ring is provided with an installation notch for the annular damping ring to be installed into the annular groove 13, that is, the annular damping ring is C-shaped, so that when the annular damping ring is installed into the annular groove 13, the installation notch can be compressed to reduce the inner diameter of the annular damping ring, thereby facilitating the installation operation.

[0040] The working principle of the present invention is: when a transmission connection is required, the control knob 9 is rotated to drive the rotating drive member 7 to rotate synchronously, the sliding protrusion 31 slides along the spiral groove 8 to drive the clutch member 3 to slide away from the control knob 9, the convex tooth 5 is embedded in the groove 6, the first rotating member 1 is connected with the second rotating member 2 by transmission, and 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 damping 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 damping ring 10 and rotates in the direction, and the sliding protrusion 31 slides along the spiral groove 8 slides, thereby driving the clutch member 3 to slide close to the control knob 9, the convex tooth 5 escapes from the groove 6, the first rotating member 1 and the second rotating member 2 are separated from each other, and at this time the concave-convex deformation tooth 11 on the other side just passes over the concave-convex body 12, so that the concave-convex body 12 and the annular damping ring 10 are clamped with each other. 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 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 users.

[0041] 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.

[0042] Although the present invention uses more terms such as first rotating member 1, second rotating member 2, clutch member 3, annular space 4, convex teeth 5, grooves 6, rotary drive member 7, spiral slide groove 8, control knob 9, annular damping ring 10, concave-convex deformation teeth 11, concave-convex body 12, annular groove 13, sliding protrusion 31, first introduction slope 51, second introduction slope 61, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain 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 mechanism, comprising a first rotating member (1), a second rotating member (2) being axially positioned and circumferentially rotatably connected to the first rotating member (1) being sleeved on its outer periphery, characterized in that: The first rotating member (1) or the second rotating member (2) is provided with a controlled clutch structure, and when the controlled clutch structure is actuated, the second rotating member (2) can be positioned circumferentially relative to the first rotating member (1) or the second rotating member (2) can be rotated circumferentially relative to the first rotating member (1), and the controlled clutch structure is provided with a clutch state locking structure; The controlled clutch structure is arranged on the first rotating member (1), and comprises a clutch member (3) which can move axially along the first rotating member (1) so as to position the second rotating member (2) circumferentially relative to the first rotating member (1) or can make the second rotating member (2) circumferentially rotatable relative to the first rotating member (1), the clutch member (3) is connected to a driving structure which can convert the rotational motion into axial movement of the clutch member (3) along the first rotating member (1), and the clutch state locking structure is arranged between the driving structure and the first rotating member (1); An annular space (4) is provided between the first rotating member (1) and the second rotating member (2), and the clutch member (3) is arranged in the annular space (4); A concave-convex meshing structure is provided between the clutch member (3) and the second rotating member (2); when the clutch member (3) moves axially forward, the concave-convex meshing structure meshes so that the first rotating member (1) and the second rotating member (2) are circumferentially positioned; and when the clutch member (3) moves axially backward, the concave-convex meshing structure disengages so that the first rotating member (1) and the second rotating member (2) are circumferentially separated; The driving structure comprises a rotary driving member (7), the rotary driving member (7) being provided with a plurality of spiral grooves (8) spaced apart in a circumferential direction, the clutch member (3) being provided with a plurality of sliding protrusions (31) spaced apart in a circumferential direction, the spiral grooves (8) and the sliding protrusions (31) being arranged in one-to-one correspondence and being slidably connected; The rotary drive member (7) is fixedly connected to a control knob (9), and the clutch state locking structure is arranged between the control knob (9) and the first rotary member (1); The clutch state locking structure comprises an annular damping ring (10), on which a plurality of concave-convex deformable teeth (11) are provided, and the outer end of the first rotating member (1) is provided with a plurality of concave-convex bodies (12), the annular damping ring (10) is sleeved on the outer periphery of the first rotating member (1), and the concave-convex deformable teeth (11) of the annular damping ring (10) pass over the concave-convex bodies (12) to achieve rotation blocking, and the annular damping ring (10) is fixedly connected to the control knob (9).

2. The clutch mechanism according to claim 1, characterized in that: The clutch member (3) is cylindrical and sleeved on the first rotating member (1); a circumferential positioning axial sliding structure is provided between the clutch member (3) and the first rotating member (1); a plurality of convex teeth (5) evenly distributed in the circumferential direction are provided at the front end of the clutch member (3); a plurality of grooves (6) evenly distributed in the circumferential direction are provided on the inner side of the second rotating member (2); the convex teeth (5) can be arranged corresponding to the grooves (6) and can be plugged into each other.

3. The clutch mechanism according to claim 2, characterized in that: The front end of the protruding tooth (5) is provided with at least one first introduction slope (51); the notch of the groove (6) is provided with at least one second introduction slope (61).

4. The clutch mechanism according to claim 1, characterized in that: An annular groove (13) is provided on the periphery of the first rotating member (1), the concave-convex body (12) is arranged in the annular groove (13), and the annular damping ring (10) is embedded in the annular groove (13).

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