CN112096756A - Wedge block bidirectional clutch - Google Patents
Wedge block bidirectional clutch Download PDFInfo
- Publication number
- CN112096756A CN112096756A CN202011115146.2A CN202011115146A CN112096756A CN 112096756 A CN112096756 A CN 112096756A CN 202011115146 A CN202011115146 A CN 202011115146A CN 112096756 A CN112096756 A CN 112096756A
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- Prior art keywords
- wedge
- block
- outer ring
- inner ring
- ring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/069—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags
- F16D41/07—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags between two cylindrical surfaces
- F16D41/076—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags between two cylindrical surfaces the wedging coupling members being non-releasably joined to form a single annular piece, e.g. either the members being integral projections from the piece, or the piece being an elastic ring cast round the radial centres of the members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D2041/0603—Sprag details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a wedge block bidirectional clutch which comprises an inner ring and an outer ring, wherein a control sleeve, an inner ring, an outer ring, a wedge block retainer and a wedge block are symmetrically arranged at two ends of the clutch respectively, the wedge block retainer and the wedge block are arranged between the inner ring and the outer ring, a convex notch is arranged at two ends of the outer ring to form a separation cavity, the inner ring is provided with a first limiting block and a wedge block hole, the outer ring is provided with a second limiting block and a wedge block hole, an inverted trapezoidal separation block is arranged at the inner side of the control sleeve, the first limiting block and the second limiting block are arranged in the separation cavity, the separation block is clamped between the first limiting block and the second limiting block, and springs are respectively arranged between two side walls of; when the separating block axially extends into a space between the first limiting block and the second limiting block, the first limiting block and the second limiting block deviate from each other to move so that the wedge block is separated from the inner ring and/or the outer ring, and the one-way transmission function is closed. The invention can control the opening and closing of the unidirectional and bidirectional transmission functions and has good operation stability.
Description
Technical Field
The invention relates to the technical field of clutches, in particular to a wedge bidirectional clutch.
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 type two-way clutch. Among them, a sprag bidirectional clutch generally includes a plurality of sprags, an outer ring and an inner ring coaxially disposed; a gap is arranged between the inner circumference of the outer ring and the outer circumference of the inner ring in the radial direction, the wedge block is arranged in the gap, one end of the wedge block is hinged with the inner ring, and the other end of the wedge block is a free end capable of rotating around a hinged shaft; a clamping groove which is engaged and matched with the free end of the wedge block is arranged on the inner circumference of the outer ring; one end of the clamping groove is a locking end along the circumferential direction of the outer ring, the shape of the clamping groove is satisfied with locking the free end of the wedge block, so that the swing of the wedge block is limited and the follow-up of the outer ring and the inner ring is ensured, and the other end of the clamping groove is a cam end, the shape of the clamping groove is satisfied with forcing the free end of the wedge block to swing towards one side of the inner ring, so that the outer ring is separated from the inner ring; and a retaining spring is arranged between the inner ring and the wedge block and pushes the free end of the wedge block to the clamping groove of the outer ring, so that the free end of the wedge block is always tightly attached to the inner peripheral surface of the outer ring.
However, the wedge clutch cannot control the opening and closing of the unidirectional rotation function, and usually can only transmit in a certain direction (such as clockwise or counterclockwise), cannot artificially select the transmission direction, or realize bidirectional transmission. There is a certain limitation in practical application.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a wedge bidirectional clutch with a plurality of transmission control modes.
The invention adopts the following technical scheme to realize the purpose:
a wedge block bidirectional clutch comprises an inner ring, an outer ring and a wedge block ring control assembly, and is characterized in that control sleeves and the wedge block ring control assembly are symmetrically arranged at two ends of the clutch respectively, the wedge block ring control assembly comprises an inner ring, an outer ring, a wedge block retainer and a plurality of groups of wedge blocks, the wedge block retainer and the groups of wedge blocks are arranged between the inner ring and the outer ring, convex notches are arranged at two ends of the outer ring to form a separation cavity, a first limiting block and a wedge block hole are arranged on the inner ring, a second limiting block and a wedge block hole are arranged on the outer ring, an inverted trapezoidal separation block is arranged at the inner side of the control sleeve, the first limiting block and the second limiting block are installed in the separation cavity, the separation block is clamped between the first limiting block and the second limiting block, and springs are arranged between two side walls of the separation; when the separating block axially extends into a space between the first limiting block and the second limiting block, the first limiting block and the second limiting block deviate from each other to move so that the wedge block is separated from 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 inner ring, the outer ring is axially arranged on the outer circumference of the outer ring, one end of the wedge block penetrates through a wedge block hole of the inner ring to be abutted to the outer circumferential wall of the inner ring, the other end of the wedge block penetrates through a wedge block hole of the outer ring to be abutted to the inner circumferential wall of the outer ring, and the one-way transmission function between the inner ring and the outer ring on one side of the clutch is achieved.
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 on the connecting wall, and a plurality of groups of positioning sliding grooves are formed in the outer peripheral wall of the connecting wall; the internal perisporium of control cover still is provided with a plurality of groups direction slider, the direction slider with location spout sliding connection.
The first limiting block is provided with a first inclined surface and a second inclined surface which are matched with each other, and the other side of the first limiting block is elastically connected with the separation cavity through a spring; one side that the second stopper with the separation piece corresponds is provided with the inclined plane of mutually supporting, the opposite side of second stopper pass through the spring with separation chamber elastic connection.
The invention adopts the technical proposal to achieve the following beneficial effects:
the invention realizes multiple control modes such as non-transmission, clockwise/anticlockwise one-way transmission, clockwise/anticlockwise two-way transmission and the like between the inner ring and the outer ring by symmetrically arranging two groups of control sleeves and wedge ring control assemblies on two sides of the clutch, wherein the wedge ring control assemblies consist of wedge retainers, inner rings and outer rings, and the interference of the two control sleeves on the wedge ring control assemblies is realized, so that the application is wider.
For the unilateral control sleeve of the clutch, a first limiting block is arranged on the inner ring, a second limiting block is arranged on the outer ring, and a separation control position is formed in a matching way; when the separating block exits from the separating control position, the inner ring and the outer ring reset under the action of the spring, and the one-way transmission function is started, so that the opening and closing of the controllable one-way rotation function are realized.
Drawings
FIG. 1 is an exploded view of the wedge bi-directional clutch of the present invention.
FIG. 2 is an exploded view of the wedge ring control assembly of the wedge bi-directional clutch of the present invention.
FIG. 3 is a schematic diagram of the appearance of the wedge bi-directional clutch of the present invention.
Fig. 4 is a schematic structural diagram of the control sleeve and the left side of the outer ring.
FIG. 5 is a schematic diagram of the inner ring and outer ring structure of the wedge ring control assembly of the present invention.
FIG. 6 is an end view of the left side of the wedge bi-directional clutch in assembled relation.
FIG. 7 is a schematic diagram of the left side one-way transmission of the sprag two-way clutch of the present invention in an open state.
Fig. 8 is a sectional view taken along the line a-a in fig. 7.
FIG. 9 is a schematic diagram showing the states of the control sleeve and the inner and outer rings when the left-side one-way transmission of the wedge bi-directional clutch of the present invention is turned off.
FIG. 10 is a schematic diagram of a wedge state with the left side of the wedge bi-directional clutch closed for one-way transmission according to the present invention.
Description of reference numerals: 1. the wedge block limiting device comprises a control sleeve 20, a wedge block ring control assembly 1-1, a separating block 1-2, a guide sliding block 2, an inner ring 2-1, a first annular connecting portion 2-2, a first limiting block 2-3, a first spring 2-4, a first wedge block limiting hole 3, an outer ring 3-1, a second annular connecting portion 3-2, a second limiting block 3-3, a second spring 3-4, a second wedge block limiting hole 4, a wedge block retainer 4-1, a wedge block 5, an inner ring 6, an outer ring 6-1, a connecting wall 6-2, a separating cavity 6-3 and a positioning sliding groove.
Detailed Description
The technical solution is described in detail with reference to specific embodiments below.
As shown in fig. 1-10, the invention is a wedge bidirectional clutch, comprising a control sleeve 1, a wedge ring control assembly 20, an inner ring 5 and an outer ring 6, wherein the wedge ring control assembly 20 comprises an inner ring 2, an outer ring 3, a wedge retainer 4 arranged between the inner ring 2 and the outer ring 3 and a plurality of groups of wedges 4-1. The inner ring 5 is arranged inside the outer ring 6, and a group of control sleeve 1 and wedge ring control components are respectively arranged at two ends of the inner ring and the outer ring, as shown in figure 1. The inner ring 5 is axially sleeved on the inner circumference of the inner ring 2 at two ends, the outer ring 6 is axially arranged on the outer circumference of the outer ring 3 at two ends, a wedge block 4-1 is arranged in the wedge block retainer 4, one end of the wedge block 4-1 is abutted against the outer circumferential wall of the inner ring 5, and the other end of the wedge block 4-1 is abutted against the inner circumferential wall of the outer ring 6.
The end part of the inner ring 2 is provided with a first annular connecting part 2-1, a plurality of groups of first limiting blocks 2-2 are arranged along the peripheral wall of the first annular connecting part 2-1, the end part of the outer ring 3 is provided with a second annular connecting part 3-1, a plurality of groups of second limiting blocks 3-2 are arranged along the peripheral wall of the second annular connecting part 3-1, the first limiting blocks 2-2 are matched with the second limiting blocks 3-2 to form a separation control position in a space between the first limiting blocks and the second limiting blocks, the outer circumference of the outer ring 3 is axially provided with a control sleeve 1, the inner circumferential wall of the control sleeve 1 is provided with a plurality of groups of separating blocks 1-1 corresponding to the separation control position, the control sleeve 1 can move along the axial direction, the separating blocks 1-1 on the control sleeve are connected into the separation control position, when the control sleeve 1 moves along the axial, so that the inner ring 2 and the outer ring 3 rotate relatively, the wedge blocks are separated from the inner ring and the outer ring, and the one-way transmission function is closed.
More specifically, as shown in fig. 3 to 4, a connecting wall 6-1 extends axially from an end of the outer ring 6, a plurality of groups of separation cavities 6-2 for accommodating the first stopper 2-2 and the second stopper 3-2 are formed on the connecting wall 6-1, and a plurality of groups of positioning chutes 6-3 are further formed in an outer peripheral wall of the connecting wall 6-1.
More specifically, the inner peripheral wall of the control sleeve 1 is further provided with a plurality of groups of guide sliding blocks 1-2, and the guide sliding blocks 1-2 are in sliding connection with the positioning sliding grooves 6-3, namely the control sleeve 1 can axially move along the connecting wall 6-1 on the outer ring 6.
More specifically, the separating block 1-1 is trapezoidal, the first limiting block 2-2 and one side of the separating block 1-1 corresponding to each other are provided with mutually matched inclined planes, and the other side of the first limiting block 2-2 is elastically connected with the separating cavity 6-2 through a first spring 2-3; one side of the second limiting block 3-2 corresponding to the separating block 1-1 is provided with an inclined plane which is matched with the inclined plane, and the other side of the second limiting block 3-2 is elastically connected with the separating cavity 6-2 through a second spring 3-3.
More specifically, the middle part of the wedge 4-1 is hinged with the wedge holder 4, and both ends of the wedge 4-1 can rotate around the wedge holder 4.
More specifically, the inner ring 2 is provided with a plurality of groups of first wedge limiting holes 2-4, the outer ring 3 is provided with a plurality of groups of second wedge limiting holes 3-4, one end of the wedge 4-1 is abutted to the inner ring 5 through the first wedge limiting holes 2-4, and the other end of the wedge 4-1 is abutted to the outer ring 6 through the second wedge limiting holes 3-4.
More specifically, two ends of the wedge 4-1 are correspondingly provided with linkage areas, one side of each linkage area is a locking end, the shape of each linkage area is such that the wedge is locked to ensure the follow-up of the inner ring 5 and the outer ring 6, and the other end of each linkage area is a free end, the shape of each linkage area is such that the wedge is forced to rotate to ensure the separation of the inner ring 5 and the outer ring 6.
In this embodiment, the present invention has two operating states of one-way transmission function, i.e. a control sleeve and an inner ring (see the wedge ring control assembly 20) located at the upper part in the exploded view shown in fig. 1, where the control sleeve and the inner ring shown in fig. 4-6 are defined as the control sleeve and the inner ring on the left side of the wedge two-way clutch and the inner ring and the outer ring when one side of the wedge two-way clutch is in the one-way transmission state. As shown in fig. 7-8, a separation block 1-1 on a control sleeve on the left side of the wedge bidirectional clutch is not in contact with a separation control position, a first limiting block 2-2 enables an inner ring 2 to rotate clockwise by a certain angle under the action of a first spring 2-3, a locking end of a wedge 4-1 is abutted against an inner ring 5, similarly, a second limiting block 3-2 enables an outer ring 3 to rotate anticlockwise by a certain angle under the action of a second spring 3-3, and a locking end of the wedge 4-1 is abutted against an outer ring 6, namely, the wedge 4-1 rotates anticlockwise and is respectively in contact with the inner ring 5 and the outer ring 6, and when the inner ring rotates clockwise, power transmission of the inner ring driving the outer ring can be realized; when the inner ring rotates anticlockwise, the free end of the wedge block 4-1 is separated from the inner ring and the outer ring, and power transmission does not occur. As shown in fig. 9-10, the left side of the wedge bidirectional clutch is in a state of one-way transmission closing, the control sleeve 1 is forcibly connected into a control state, the control sleeve 1 moves rightwards along the connecting wall 6-1 of the outer ring 6, the separating block 1-1 on the control sleeve is connected into a separating control position, due to the fact that the contact surface is an inclined surface, thrust forces in opposite directions are formed on the first limiting block and the second limiting block, the first limiting block is pushed to enable the inner ring 2 to rotate anticlockwise by a certain angle, the free end of the wedge 4-1 corresponds to the inner ring 5, the second limiting block is pushed to enable the outer ring 3 to rotate clockwise by a certain angle, the free end of the wedge 4-1 corresponds to the outer ring 6, namely the wedge 4-1 rotates clockwise to be separated from the inner ring 5 and the outer ring 6 respectively, and at the. The one-way transmission function can be started only when the control sleeve 1 moves leftwards to separate the separating block from the separating control position. That is, the control sleeve controlling the left side of the wedge bidirectional clutch can realize two outputs: 1) the control sleeve is connected with a separation control position to forcibly control the inner ring and the outer ring not to be driven; 2) the inner ring rotates clockwise to drive the outer ring to rotate, and the inner ring rotates anticlockwise to be not transmitted.
Similarly, when the separation block 1-1 on the control sleeve on the right side of the wedge bidirectional clutch is controlled to be not contacted with the separation control position, namely the wedge 4-1 rotates clockwise and is respectively contacted with the inner ring 5 and the outer ring 6, and when the inner ring rotates anticlockwise, the power transmission that the inner ring drives the outer ring can be realized; when the inner ring rotates clockwise, the free end of the wedge 4-1 is separated from the inner ring and the outer ring, and no power transmission occurs. And when the separation block 1-1 on the control sleeve is connected into the separation control position, the inner ring and the outer ring are forcibly controlled not to be driven. Therefore, the control sleeve controlling the right side of the wedge bidirectional clutch can realize two outputs: 1) the control sleeve is connected with a separation control position to forcibly control the inner ring and the outer ring not to be driven; 2) the inner ring rotates anticlockwise to drive the outer ring to rotate, and the inner ring rotates clockwise without transmission.
Therefore, the control of the connection state of the control sleeves at the left side and the right side of the wedge bidirectional clutch can realize that:
1) the left control sleeve is connected into the separation control position, and the right control sleeve is disconnected from the separation control position: the inner ring rotates anticlockwise to drive the outer ring to rotate.
2) The left control sleeve exits the separation control position, and the right control sleeve accesses the separation control position: the inner ring rotates clockwise to drive the outer ring to rotate.
3) The control sleeves on the left side and the right side are withdrawn from the separation control position: the inner ring rotates clockwise and anticlockwise to drive the outer ring to rotate.
4) The control sleeves on the left side and the right side are all connected into a separation control position: the inner ring is separated from the outer ring, and no power transmission occurs.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (4)
1. A wedge block bidirectional clutch comprises an inner ring, an outer ring and a wedge block ring control assembly, and is characterized in that control sleeves and the wedge block ring control assembly are symmetrically arranged at two ends of the clutch respectively, the wedge block ring control assembly comprises an inner ring, an outer ring, a wedge block retainer and a plurality of groups of wedge blocks, the wedge block retainer and the groups of wedge blocks are arranged between the inner ring and the outer ring, convex notches are arranged at two ends of the outer ring to form a separation cavity, a first limiting block and a wedge block hole are arranged on the inner ring, a second limiting block and a wedge block hole are arranged on the outer ring, an inverted trapezoidal separation block is arranged at the inner side of the control sleeve, the first limiting block and the second limiting block are installed in the separation cavity, the separation block is clamped between the first limiting block and the second limiting block, and springs are arranged between two side walls of the separation; when the separating block axially extends into a space between the first limiting block and the second limiting block, the first limiting block and the second limiting block deviate from each other to move so that the wedge block is separated from the inner ring and/or the outer ring, and the one-way transmission function is closed.
2. The wedge bidirectional clutch according to claim 1, wherein the inner ring is axially sleeved on an inner circumference of the inner ring, the outer ring is axially arranged on an outer circumference of the outer ring, one end of the wedge passes through a wedge hole of the inner ring to abut against an outer circumferential wall of the inner ring, and the other end of the wedge passes through a wedge hole of the outer ring to abut against an inner circumferential wall of the outer ring, so that a one-way transmission function between the inner ring and the outer ring on one side of the clutch is realized.
3. A wedge bi-directional clutch according to claim 2 wherein said outer race end portion has a connecting wall extending axially therefrom, said connecting wall having a plurality of said sets of said pockets formed therein, said connecting wall having a peripheral wall with a plurality of sets of locating grooves formed therein; the internal perisporium of control cover still is provided with a plurality of groups direction slider, the direction slider with location spout sliding connection.
4. The wedge bidirectional clutch as claimed in claim 3, wherein the first stopper and the separating block are provided with mutually matched inclined surfaces at one sides corresponding to each other, and the other side of the first stopper is elastically connected with the separating cavity through a spring; one side that the second stopper with the separation piece corresponds is provided with the inclined plane of mutually supporting, the opposite side of second stopper pass through the spring with separation chamber elastic connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011115146.2A CN112096756A (en) | 2020-10-19 | 2020-10-19 | Wedge block bidirectional clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011115146.2A CN112096756A (en) | 2020-10-19 | 2020-10-19 | Wedge block bidirectional clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112096756A true CN112096756A (en) | 2020-12-18 |
Family
ID=73785431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011115146.2A Pending CN112096756A (en) | 2020-10-19 | 2020-10-19 | Wedge block bidirectional clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112096756A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215888A (en) * | 2021-11-30 | 2022-03-22 | 周旭亮 | Rotary power transmission device and vehicle power assembly system |
-
2020
- 2020-10-19 CN CN202011115146.2A patent/CN112096756A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114215888A (en) * | 2021-11-30 | 2022-03-22 | 周旭亮 | Rotary power transmission device and vehicle power assembly system |
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