CN213270786U - Controllable roller type clutch - Google Patents

Abstract

The utility model discloses a controllable roller type clutch, which comprises an inner ring, an outer ring, a roller control ring and a roller, and is characterized in that the controllable roller type clutch also comprises a control sleeve, wherein rectangular notches are arranged at the two ends of the outer ring to form a separation cavity, the roller control ring is provided with a right-angled trapezoidal stopper and a roller hole, the inner peripheral wall of the control sleeve is provided with an inverted right-angled trapezoidal separation block, one side of the inclined surface of the stopper and one side of the inclined surface of the separation block are installed in the separation cavity in a matching way, one side of the right-angled side of the stopper is provided with a spring, and the spring is abutted against the side; when the separating block axially extends into the space between the limiting block and the separating cavity, the limiting block moves to enable the roller to be not in contact with the inner ring and/or the outer ring, and the one-way transmission function is closed. The utility model discloses the one-way transmission function of steerable clutch is opened and is closed, and operating stability is good.

Description

Controllable roller type clutch

Technical Field

The utility model relates to a clutch technical field specifically is a steerable roller formula clutch is related to.

Background

The one-way clutch has two motion modes: first, torque transfer or engagement; the function of the idle running or overrunning is that when the power source drives the driven element, the driven element can only rotate in a single direction, and if the power source changes the direction, if the direction is changed from clockwise to anticlockwise, the driven element can automatically break away from the function of not generating any power transmission; or when the power output part of the one-way clutch rotates faster than the power source, the clutch is in a release state, and the inner ring and the outer ring have no linkage relation, which is the one-way overrunning function of the one-way clutch.

Currently, a common one-way clutch can be classified into a roller type one-way clutch and a sprag clutch. The controllable roller type clutch usually comprises an outer ring, a roller, a spring and an inner ring, wherein in the working process, if the outer ring of the controllable roller type clutch rotates along the anticlockwise direction relative to the inner ring, the roller moves towards the large end in an open slot with a cam profile and compresses the spring, and at the moment, the roller is separated from the contact surface of the inner ring, so that the outer ring is separated from the inner ring, and the controllable roller type clutch cannot be locked; if the outer race of the controllable roller clutch attempts to rotate clockwise relative to the inner race, the rollers move toward the small ends in the open slots and wedge between the inner and outer races to lock them together, while torque is transmitted between them and once the rollers wedge into the small ends of the open slots, the roller clutch is controlled to lock so that the outer race is not permitted to rotate clockwise relative to the inner race or the inner race rotates counterclockwise relative to the outer race.

However, the above-mentioned controllable roller clutch cannot control the on and off of the one-way rotation function, and usually can only transmit in a certain direction (for example, clockwise or counterclockwise), cannot artificially select the transmission direction, or realize the two-way transmission. There is a certain limitation in practical application.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a controllable roller clutch with a plurality of transmission control modes for solving the defects of the prior art.

The utility model discloses an adopt following technical solution to realize above-mentioned purpose: a controllable roller type clutch comprises an inner ring, an outer ring, a roller control ring and a roller, and is characterized by further comprising a control sleeve, wherein rectangular notches are formed in two ends of the outer ring to form a separation cavity, the roller control ring is provided with a right-angled trapezoid-shaped limiting block and a roller hole, an inverted right-angled trapezoid-shaped separation block is arranged on the inner peripheral wall of the control sleeve, one side of the inclined surface of the limiting block and one side of the inclined surface of the separation block are installed in the separation cavity in a matched mode, one side of the right-angled edge of the limiting block is provided with a spring, and the spring abuts against the side wall of the separation cavity; when the separating block axially extends into the space between the limiting block and the separating cavity, the limiting block moves to enable the roller to be not in contact with the inner ring and/or the outer ring, and the one-way transmission function is closed.

The inner ring is axially sleeved on the inner circumference of the roller control ring, the outer circumference of the roller control ring is arranged in the inner cavity of the outer ring, when the separating block leaves the space between the limiting block and the separating cavity, the spring pushes the roller control ring to reset, one end of the roller penetrates through a roller hole of the roller control ring and is abutted to the outer circumferential wall of the inner ring, the other end of the roller penetrates through the roller hole of the roller control ring and is abutted to the inner circumferential wall of the outer ring, so that the roller is in contact with the inner ring and the outer ring, and the one-way transmission function is opened

A connecting wall extends from the end part of the outer ring along the axial direction, a plurality of groups of separation cavities are formed in the connecting wall, a plurality of groups of positioning chutes are further formed in the outer peripheral wall of the connecting wall, and the contact surface between the inner peripheral wall of the outer ring and the roller is set to be a cam profile surface; the inner peripheral wall of the control sleeve is also provided with a plurality of groups of guide sliding blocks, and the guide sliding blocks are connected with the positioning sliding grooves in a sliding manner; the rollers are in contact with the surface of the cam profile of the inner peripheral wall of the outer ring.

The utility model adopts the beneficial effect that above-mentioned technical solution can reach is:

one, the utility model discloses an at two sets of control covers of clutch bilateral symmetry installation, roller ring control assembly comprises roller control ring and a plurality of groups of rollers of setting on roller control ring, whether to roller ring control assembly's regulation and control through two control covers, realize between the inner and outer lane do not drive, clockwise/anticlockwise one-way transmission, multiple control mode such as clockwise anticlockwise two-way transmission, use more extensively.

Secondly, as an improved scheme, the roller control ring is provided with the limiting block, the limiting block is provided with the spring, the limiting block is arranged in the separation cavity on the outer ring connecting wall, when the control sleeve moves along the axial direction, the separation block on the control sleeve is connected into the separation cavity, meanwhile, the separation block and one side of the inclined plane of the limiting block are matched, formed and installed in the separation cavity, and the separation block pushes the limiting block to enable the roller control ring to rotate clockwise or anticlockwise due to the contact, so that the roller is not in contact with the outer ring, and the one-way transmission function is closed; when the separating block exits the separating cavity, the roller control ring is reset under the action of the spring, and the one-way transmission function is started.

Drawings

Fig. 1 is an exploded view of the controllable roller clutch according to the present invention.

Fig. 2 is a schematic diagram illustrating the insertion state of the control sleeve of the controllable roller clutch according to the present invention.

Fig. 3 is a sectional view of the local assembly of the controllable roller clutch of the present invention.

Fig. 4 is a schematic diagram illustrating the pull-out state of the control sleeve of the controllable roller clutch according to the present invention.

Fig. 5 is a cross-sectional view of the inner cavity of the controllable roller clutch.

Description of reference numerals: 1. the device comprises an outer ring, 10 an inner circumferential wall, 11 a separation cavity, 12 a positioning chute, 13 a connecting wall, 2 an inner ring, 3 a roller control ring, 31 a limiting block, 32 a roller hole, 4 a control sleeve, 41 a separation block, 42 a guide sliding block, 7 a roller, 8 and a spring.

Detailed Description

The technical solution is described in detail with reference to specific embodiments below.

As shown in fig. 1-5, the present invention relates to a controllable roller clutch, which comprises 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, one end of the inner ring and the outer ring is provided with a group of control sleeves 4 and a roller control ring 3, the roller control ring 3 is axially sleeved with the inner ring 2 and is axially provided with the outer ring 1, a roller hole 32 is formed in the roller control ring 3, the roller 7 is arranged on the roller hole 32, one end of the roller 7 is abutted to the outer peripheral wall of the inner ring 2, and the other end of the roller is abutted to the inner peripheral wall 10 of the outer ring 1.

The connecting part of the roller control ring 3 is also provided with a limiting block 31 in a right-angled trapezoid shape, the outer circumference of the roller control ring 3 is axially provided with a control sleeve 4, the inner circumferential wall of the control sleeve 4 is provided with a plurality of groups of separating blocks 41 in an inverted right-angled trapezoid shape, connecting walls 13 at two ends of the outer ring 1 are provided with square notches to form a separating cavity 11, one side of the inclined surface of the limiting block 31 is matched with one side of the inclined surface of the separating block 41 to be formed and installed in the separating cavity 11, one side of the right-angled edge of the limiting block is provided with a spring 8 and presses against the side wall of the separating cavity, the control sleeve 4 can move axially, when the separating block 41 on the control sleeve axially extends into the space between the limiting block 31 and the separating cavity 11, the limiting block 31 moves to enable the roller 7 to be separated from the outer ring 1, and when the separating block 41, the one-way transmission function is started.

More specifically, the inner peripheral wall of the control sleeve 4 is further provided with a plurality of sets of guide sliders 42, the guide sliders 42 are further provided with positioning sliding grooves 12 on the connecting wall 13 of the outer ring 1, and the guide sliders 42 are slidably connected with the positioning sliding grooves 12, that is, the control sleeve 4 can axially move along the connecting wall 13 on the outer ring 1.

More specifically, the control sleeve 4 and the roller control ring 3 are provided on the clutch.

More specifically, the inner peripheral wall 10 of the outer ring 1 is configured as a cam profile surface, the shape of the cam profile surface is such that the small end can lock the roller, ensuring the follow-up of the inner ring 2 and the outer ring 1, and the large end has enough space to allow the roller to rotate, ensuring the separation of the inner ring 2 and the outer ring 6.

In this embodiment, the utility model discloses have one-way transmission function and close and open two kinds of operating condition, when steerable roller clutch one side is in one-way transmission function open mode, control jacket 4 on the steerable roller clutch outwards moves along the connecting wall 13 of outer lane 1, separation block 41 on the control jacket 4 breaks away from with separation chamber 11, stopper 31 receives under the impetus of spring 8, make roller control ring 3 anticlockwise rotate certain angle, one end butt inner circle 2 of roller 7, the other end of roller 7 supports protruding type surface (popular call tip) on the interior perisporium of outer lane 1, when inner circle 2 anticlockwise rotates, can realize the power transmission of inner circle 2 drive outer lane 1 this moment; when the inner ring 2 rotates clockwise, the roller spring pulls the roller to the concave surface (commonly called as the big end), and at the moment, the roller 7 is separated from the outer ring 1, namely the inner ring 2 is separated from the outer ring 1, so that power transmission does not occur. The roller springs are not shown in fig. 5.

When the control sleeve 4 on the controllable roller type clutch moves towards the outer ring along the connecting wall 13 of the outer ring 1, the separating block 41 on the control sleeve 4 goes deep into the separating cavity 11, and because the contact surface of the separating block is an inclined surface, the limiting block 31 is extruded by the separating block 41 to extrude the spring 8, so that the roller control ring 3 is pushed to rotate clockwise for a certain angle, one side of the roller 7 is pressed against the inner ring 2, the other side of the roller 7 is not contacted with the inner peripheral wall 10 of the outer ring 1, and the one-way transmission function is closed. The control sleeve on the right side of the controllable roller type clutch is controlled, and two kinds of output can be realized: 1) the control sleeve is separated from the separation cavity and is in one-way transmission; 2) the control sleeve is inserted into the separation cavity, and the one-way transmission function is closed.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and improvements can be made without departing from the inventive concept, and these all fall into the protection scope of the present invention.

Claims (3)

1. A controllable roller type clutch comprises an inner ring, an outer ring, a roller control ring and rollers, and is characterized by further comprising a control sleeve, wherein rectangular notches are formed in two ends of the outer ring to form a separation cavity, the roller control ring is provided with a right-angle trapezoidal limiting block and a roller hole, an inverted right-angle trapezoidal separation block is arranged on the inner peripheral wall of the control sleeve, one side of an inclined plane of the limiting block and one side of an inclined plane of the separation block are installed in the separation cavity in a matched mode, one side of a right-angle side of the limiting block is provided with a spring, and the spring abuts against the side wall of the separation cavity; when the separating block axially extends into the space between the limiting block and the separating cavity, the limiting block moves to enable the roller to be not in contact with the inner ring and/or the outer ring, and the one-way transmission function is closed.

2. The controllable roller clutch of claim 1, wherein the inner ring is axially sleeved on the inner circumference of the roller control ring, the outer circumference of the roller control ring is disposed in the inner cavity of the outer ring, when the separating block leaves the space between the limiting block and the separating cavity, the spring pushes the roller control ring to return, 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, 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 with the inner ring and the outer ring, and the one-way transmission function is opened.

3. The controllable roller clutch of claim 2, wherein the outer ring has a connecting wall extending axially from an end thereof, the connecting wall having a plurality of said separating cavities formed therein, the connecting wall further having a plurality of sets of positioning grooves formed in an outer peripheral wall thereof, and a cam profile surface being formed on a contact surface of the inner peripheral wall of the outer ring with the rollers; the inner peripheral wall of the control sleeve is also provided with a plurality of groups of guide sliding blocks, and the guide sliding blocks are connected with the positioning sliding grooves in a sliding manner; the rollers are in contact with the surface of the cam profile of the inner peripheral wall of the outer ring.

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