A controllable one-way clutch

Abstract

The present invention discloses a controllable one-way clutch, comprising an inner ring, an outer ring, a roller control ring, and a roller, characterized in that it also comprises a control sleeve, rectangular notches are arranged at both ends of the outer ring to form a separation chamber, the roller control ring is provided with a right-angled trapezoidal limit block and a roller hole, the inner peripheral wall of the control sleeve is provided with a separation block in the shape of an inverted right-angled trapezoid, one side of the inclined surface of the limit block is matched with one side of the inclined surface of the separation block and installed in the separation chamber, a spring is arranged on one side of the right-angled side of the limit block, and the spring abuts against the side wall of the separation chamber; when the separation block axially penetrates into the space between the limit block and the separation chamber, the limit block moves so that the roller does not contact the inner ring and / or the outer ring, and the one-way transmission function is closed. The present invention can control the one-way transmission function of the clutch to be turned on and off, and has good operating stability.

Description

Technical Field

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

[0002] There are two modes of movement of a one-way clutch: 1. Torque transmission or engagement; 2. Idle running or overrunning. Its function is that when the power source drives the passive element, it can only rotate in one direction. If the power source changes direction, such as from clockwise to counterclockwise, it will automatically disengage and not generate any power transmission function; or when the power output part of the one-way clutch rotates faster than the power source, the clutch is in a disengaged state, and there is no linkage between the inner and outer rings. This is called the one-way overrunning function of the one-way clutch.

[0003] At present, the commonly used one-way clutches can be divided into two types: roller one-way clutches and wedge clutches. Among them, the controllable one-way clutch usually includes an outer ring, a roller, a spring and an inner ring. During operation, if the outer ring of the controllable one-way clutch rotates counterclockwise relative to the inner ring, then the roller moves to the large end in the open groove with a cam profile and compresses the spring. At this time, the roller and the inner ring are separated from the contact surface, so that the outer ring and the inner ring are separated, and the controllable one-way clutch will not be locked; if the outer ring of the controllable one-way clutch attempts to rotate clockwise relative to the inner ring, then the roller moves to the small end in the open groove, wedges between the inner and outer rings, and locks the two. At the same time, torque can be transmitted between the two. Once the roller wedges into the small end of the open groove, the controllable one-way clutch is locked, so that its outer ring is not allowed to rotate clockwise relative to the inner ring, or the inner ring is not allowed to rotate counterclockwise relative to the outer ring.

[0004] However, the controllable one-way clutch cannot control the opening and closing of the one-way rotation function, and can usually only transmit in a certain direction (such as clockwise or counterclockwise), and cannot manually select the transmission direction or realize bidirectional transmission. There are still certain limitations in practical applications. Summary of the invention

[0005] The purpose of the present invention is to provide a controllable one-way clutch with multiple transmission control modes in order to solve the deficiencies of the prior art.

[0006] The present invention adopts the following technical solutions to achieve the above-mentioned purpose: a controllable one-way clutch, a controllable one-way clutch, comprising an inner ring, an outer ring, a roller control ring, and a roller, characterized in that it also includes a control sleeve, rectangular notches are arranged at both ends of the outer ring to form a separation chamber, the roller control ring is provided with a right-angled trapezoidal limit block and a roller hole, the inner circumferential wall of the control sleeve is provided with a separation block in the shape of an inverted right-angled trapezoid, one side of the inclined surface of the limit block is matched with one side of the inclined surface of the separation block and is installed in the separation chamber, a spring is arranged on one side of the right-angled side of the limit block, and the spring abuts against the side wall of the separation chamber; when the separation block axially penetrates into the space between the limit block and the separation chamber, the limit block moves so that the roller is not in contact with the inner ring and / or the outer ring, and the one-way transmission function is closed.

[0007] The inner circumference of the roller control ring is axially sleeved with the inner ring, and the outer circumference of the roller control ring is arranged in the inner cavity of the outer ring. When the separation block leaves the space between the limit block and the separation cavity, the spring pushes the roller control ring to reset, and one end of the roller passes through the roller hole of the roller control ring and abuts against the outer circumferential wall of the inner ring, and the other end of the roller passes through the roller hole of the roller control ring and abuts against the inner circumferential wall of the outer ring, so that the roller contacts the inner ring and the outer ring, and the one-way transmission function is turned on.

[0008] A connecting wall is axially extended at the end of the outer ring, and a plurality of separation cavities are formed on the connecting wall. A plurality of positioning grooves are also arranged on the outer peripheral wall of the connecting wall. The contact surface between the inner peripheral wall of the outer ring and the roller is arranged to be a cam profile surface. A plurality of guide sliders are also arranged on the inner peripheral wall of the control sleeve, and the guide sliders are slidably connected with the positioning grooves. The roller contacts the cam profile surface of the inner peripheral wall of the outer ring.

[0009] The beneficial effects that can be achieved by the present invention using the above technical solution are:

[0010] 1. The present invention symmetrically installs two groups of control sleeves and roller ring control components on both sides of the clutch. The roller ring control component consists of a roller control ring and a plurality of rollers arranged on the roller control ring. By regulating the roller ring control component by the two control sleeves, multiple control modes such as no transmission between the inner and outer rings, clockwise / counterclockwise one-way transmission, clockwise / counterclockwise two-way transmission, etc. are realized, and the application is more extensive.

[0011] 2. As an improved solution, the present invention provides a limit block on the roller control ring and a spring on the limit block, wherein the limit block is provided in a separation cavity on the outer ring connecting wall, and when the control sleeve moves axially, the separation block thereon is connected to the separation cavity, and at the same time, the separation block is matched with one side of the inclined surface of the limit block and installed in the separation cavity. Since the contact is an inclined surface, the separation block pushes the limit block, so that the roller control ring rotates clockwise or counterclockwise, the roller does not contact the outer ring, and the one-way transmission function is closed; when the separation block exits the separation cavity, the roller control ring is reset under the action of the spring, and the one-way transmission function is turned on. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an exploded view of the controllable one-way clutch of the present invention.

[0013] Figure 2 This is a schematic diagram of the control sleeve of the controllable one-way clutch of the present invention in the inserted state.

[0014] Figure 3 It is a partial assembly cross-sectional view of the controllable one-way clutch of the present invention.

[0015] Figure 4 This is a schematic diagram of the control sleeve of the controllable one-way clutch of the present invention being pulled out.

[0016] Figure 5 It is a cross-sectional view of the inner cavity of a controllable one-way clutch.

[0017] Explanation of the accompanying drawings: 1. Outer ring, 10. Inner wall, 11. Separation chamber, 12. Positioning groove, 13. Connecting wall, 2. Inner ring, 3. Roller control ring, 31. Limit block, 32. Roller hole, 4. Control sleeve, 41. Separation block, 42. Guide slider, 7. Roller, 8. Spring. DETAILED DESCRIPTION

[0018] The present technical solution is described in detail below in conjunction with specific embodiments.

[0019] like Figure 1-5 As shown, the present invention is a controllable one-way clutch, comprising a control sleeve 4, a roller control ring 3, an inner ring 2 and an outer ring 1, wherein the roller control ring 3 comprises a square roller hole 32 and a roller 7. The inner ring 2 is arranged inside the outer ring 1, and a set of control sleeves 4 and roller control rings 3 are arranged at one end of the inner and outer rings, the roller control ring 3 is axially sleeved with the inner ring 2 and axially arranged with the outer ring 1, the roller control ring 3 is provided with a roller hole 32, and the roller 7 is installed on the roller hole 32, and one end of the roller 7 abuts against the outer peripheral wall of the inner ring 2, and the other end abuts against the inner peripheral wall 10 of the outer ring 1.

[0020] A right-angled trapezoidal limit block 31 is also installed on the connecting part of the roller control ring 3, a control sleeve 4 is axially arranged on the outer circumference of the roller control ring 3, and a plurality of inverted right-angled trapezoidal separation blocks 41 are arranged on the inner circumferential wall of the control sleeve 4. Square notches are arranged on the connecting walls 13 at both ends of the outer ring 1 to form a separation chamber 11. One side of the inclined surface of the limit block 31 and one side of the inclined surface of the separation block 41 are matched and formed and installed in the separation chamber 11. A spring 8 is arranged on one side of the right-angled side of the limit block and presses against the side wall of the separation chamber. The control sleeve 4 can move axially. When the separation block 41 thereon axially penetrates into the space between the limit block 31 and the separation chamber 11, the limit block 31 moves to make the roller 7 disengage from the outer ring 1. When the separation block 41 is axially pulled out of the space between the limit block 31 and the separation chamber 11, the spring moves the limit block 31 to make the roller 7 contact with the inner ring 2 and the outer ring 1, and the one-way transmission function is turned on.

[0021] More specifically, the inner wall of the control sleeve 4 is also provided with several groups of guide sliders 42. The guide sliders 42 and the connecting wall 13 of the outer ring 1 are also provided with positioning grooves 12. The guide sliders 42 are slidingly connected to the positioning grooves 12, that is, the control sleeve 4 can move axially along the connecting wall 13 on the outer ring 1.

[0022] More specifically, the control sleeve 4 and the roller control ring 3 are arranged on the clutch.

[0023] More specifically, the inner circumferential wall 10 of the outer ring 1 is configured as a cam profile surface, the shape of the cam profile surface being sufficient to lock the roller at the small end to ensure the follow-up of the inner ring 2 and the outer ring 1, and to have sufficient space at the large end to allow the roller to rotate to ensure the separation of the inner ring 2 and the outer ring 6.

[0024] In this embodiment, the present invention has two working states of one-way transmission function closed and opened. When one side of the controllable one-way clutch is in the one-way transmission function opened state, the control sleeve 4 on the controllable one-way clutch moves outward along the connecting wall 13 of the outer ring 1, and the separation block 41 on the control sleeve 4 is separated from the separation chamber 11. The limit block 31 is pushed by the spring 8, so that the roller control ring 3 rotates counterclockwise by a certain angle, and one end of the roller 7 abuts against the inner ring 2, and the other end of the roller 7 abuts against the convex surface (commonly known as the small end) on the inner circumferential wall of the outer ring 1. When the inner ring 2 rotates counterclockwise, the power transmission of the inner ring 2 driving the outer ring 1 can be realized; when the inner ring 2 rotates clockwise, the roller spring pulls the roller to the concave surface (commonly known as the big end), and the roller 7 is separated from the outer ring 1, that is, the inner ring 2 is separated from the outer ring 1, and no power transmission occurs. Figure 5 The roller spring is not shown.

[0025] When the control sleeve 4 on the controllable one-way clutch moves toward the outer ring along the connecting wall 13 of the outer ring 1, the separation block 41 on the control sleeve 4 goes deep into the separation chamber 11. Since the contact surface of the separation block is an inclined surface, the limit block 31 is squeezed by the separation block 41 and squeezes the spring 8, thereby pushing the roller control ring 3 to rotate clockwise by a certain angle, one side of the roller 7 presses the inner ring 2, and the other side of the roller 7 does not contact the inner circumferential wall 10 of the outer ring 1, and the one-way transmission function is closed. That is, the control sleeve on the right side of the controllable one-way clutch can achieve two outputs: 1) the control sleeve is separated from the separation chamber, and the one-way transmission; 2) the control sleeve is inserted into the separation chamber, and the one-way transmission function is closed.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, which all fall within the protection scope of the present invention.

Claims

1. A controllable one-way clutch, comprising an inner ring, an outer ring, a roller control ring, and a roller, characterized in that: It also includes a control sleeve, rectangular notches are arranged at both ends of the outer ring to form a separation cavity, the roller control ring is provided with a right-angled trapezoidal limit block and a roller hole, the inner circumferential wall of the control sleeve is provided with a separation block in the shape of an inverted right-angled trapezoid, one side of the inclined surface of the limit block is matched with one side of the inclined surface of the separation block and installed in the separation cavity, a spring is arranged on one side of the right-angled side of the limit block, and the spring abuts against the side wall of the separation cavity; when the separation block axially penetrates into the space between the limit block and the separation cavity, the limit block moves so that the roller does not contact the inner ring and / or the outer ring, and the one-way transmission function is closed; the inner circumference of the roller control ring is axially sleeved with the inner ring, and the outer circumference of the roller control ring is arranged in the inner cavity of the outer ring, and when the separation block leaves the space between the limit block and the separation cavity, the spring pushes The roller control ring is reset, one end of the roller passes through the roller hole of the roller control ring and abuts against the outer circumferential wall of the inner ring, and the other end of the roller passes through the roller hole of the roller control ring and abuts against the inner circumferential wall of the outer ring, so that the roller contacts the inner ring and the outer ring, and the one-way transmission function is turned on; a connecting wall is extended axially at the end of the outer ring, and a plurality of separation cavities are formed on the connecting wall, and a plurality of groups of positioning grooves are also arranged on the outer circumferential wall of the connecting wall, and the contact surface between the inner circumferential wall of the outer ring and the roller is arranged as a cam profile surface; a plurality of groups of guide sliders are also arranged on the inner circumferential wall of the control sleeve, and the guide sliders are slidably connected with the positioning sliders; the roller contacts the cam profile surface of the inner circumferential wall of the outer ring; the outer surface of the inner ring is a continuous cylindrical surface.

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