CN220566454U - Tensioning unlocking wedge clutch - Google Patents

Abstract

The utility model relates to a tensioning and unlocking wedge type clutch, which comprises a plurality of tensioning parts, wherein the tensioning parts are in one-to-one correspondence with wedges, and the tensioning parts and the corresponding wedges can be mutually close to or mutually far away from each other; when the outer ring actively rotates in the forward direction or the inner ring actively rotates in the reverse direction and the tensioning component is far away from the corresponding wedge, the wedge clutch is in a locking state; when the outer ring actively rotates in the reverse direction or the inner ring actively rotates in the forward direction, the outer ring pushes the wedge block to reversely swing from the locking posture to the unlocking posture, and the wedge block clutch is in a first unlocking state; when the outer ring actively rotates in the forward direction or the inner ring actively rotates in the reverse direction and the tensioning component and the corresponding wedge block are close to each other, the wedge block clutch is in a second unlocking state. According to the utility model, the unlocking of the clutch can be realized when the outer ring and the inner ring of the clutch rotate along respective locking rotation directions, so that more transmission possibilities are realized.

Description

Tensioning unlocking wedge clutch

Technical Field

The utility model relates to the technical field of clutches, in particular to a tensioning and unlocking wedge type clutch.

Background

The clutch is a common component in mechanical transmission, the clutch has a locking state and an unlocking state, when the clutch is in the locking state, the inner ring and the outer ring can mutually transmit, when the clutch is in the unlocking state, the inner ring and the outer ring respectively rotate, the inner ring is connected with the inner side transmission component, the outer ring is connected with the outer side transmission component, when the clutch is locked, the inner side transmission component and the outer side transmission component can mutually transmit, and when the clutch is explained, the inner side transmission component and the outer side transmission component cannot transmit.

Referring to fig. 1, as shown in the illustration, a wedge clutch in the prior art comprises an inner ring 11, an outer ring 12, a plurality of wedges 13, a retainer 14 and an elastic member 15, wherein the outer ring 12 is coaxially sleeved on the outer side of the inner ring 11 and forms an annular space 16 therebetween, the plurality of wedges 13, the retainer 14 and the elastic member 15 are all arranged in the annular space 16, the plurality of wedges 13 are sequentially arranged along the circumferential direction of the annular space 16 and can unlock and lock the outer ring 12, the retainer 14 separates the different wedges 13 and holds the plurality of wedges 13 in the annular space 16, and the elastic member 15 is elastically pressed in a groove 131 on the outer side of the plurality of wedges 13 and holds the wedges 13 in a locking posture. When the outer ring 12 actively rotates in the anticlockwise direction or the inner ring 11 actively rotates in the clockwise direction, the wedge 13 is kept in a locking state, and the clutch is in a locking state; when the outer ring 12 actively rotates clockwise or the inner ring 11 actively rotates anticlockwise, the outer ring 12 pushes the wedge 13 to swing clockwise from the locking posture to the unlocking posture, and the clutch is in the unlocking state.

As can be seen, in the prior art, the clutch is in a locked state when the outer race or the inner race of the clutch actively rotates in the respective locking rotational directions. In some transmissions, unlocking of the clutch may also be achieved when the outer or inner race of the clutch is required to actively rotate in the respective locking rotational direction. The wedge clutch in the prior art cannot realize the functions, so that part of transmission cannot be realized. How to realize that the clutch can be unlocked when the outer ring or the inner ring of the clutch actively rotates along the respective locking rotation direction is a technical problem to be solved in the field.

Disclosure of Invention

The object of the utility model is to achieve an unlocking of a clutch when the outer ring or the inner ring of the clutch rotates in the respective locking rotational direction.

In order to solve the technical problems, the utility model provides a tensioning and unlocking wedge clutch, which comprises an inner ring, an outer ring, a plurality of wedges, a retainer and an elastic component, wherein the outer ring is coaxially sleeved on the outer side of the inner ring, an annular space is formed between the inner ring and the outer ring, the plurality of wedges, the retainer and the elastic component are all arranged in the annular space, the plurality of wedges are sequentially arranged along the circumferential direction of the annular space and can unlock and lock the inner ring and the outer ring, the retainer isolates different wedges and keeps the plurality of wedges in the annular space, the elastic component is elastically pressed in grooves on the outer sides of the plurality of wedges and keeps the wedges in a locking state, one of the outer ring and the inner ring is a base ring relatively fixed with the retainer, and the other is a thrust ring for pushing the wedges to swing;

the device comprises an annular space, a wedge block, a plurality of tensioning components, a plurality of elastic components, a plurality of adjusting components and a plurality of adjusting components, wherein the tensioning components are arranged in the annular space and are sequentially arranged along the circumferential direction of the annular space, the tensioning components are in one-to-one correspondence with the wedge block, the elastic components on the opposite sides of the corresponding wedge block are tightly supported towards the radial inner sides of the elastic components by the tensioning components, the circumferential positions of the tensioning components along the annular space are adjustable, the distance between the tensioning components and the corresponding wedge block is adjustable to a first distance and a second distance, and the first distance is larger than the second distance;

when the wedge block clutch is in a locking state, the outer ring actively rotates in a forward direction or the inner ring actively rotates in a reverse direction, the distance between the tensioning component and the corresponding wedge block is a first distance, the thrust ring and the wedge block are mutually propped to enable the wedge block to be kept in a locking state, and the inner ring and the outer ring are mutually locked;

when the wedge block clutch is in a first unlocking state, the outer ring actively rotates in the reverse direction or the inner ring actively rotates in the forward direction, the thrust ring and the wedge block mutually slip to push the wedge block to reversely swing from a locking posture to an unlocking posture, and the inner ring and the outer ring are mutually unlocked;

when the wedge type clutch is in a second unlocking state, the outer ring actively rotates in the forward direction or the inner ring actively rotates in the reverse direction, the distance between the tensioning component and the corresponding wedge is kept at a second distance, the elastic component deforms and drives the corresponding wedge to reversely swing from the locking posture to the unlocking posture, and the inner ring and the outer ring are mutually unlocked.

In one embodiment of the present utility model, one of the forward direction and the reverse direction is clockwise and the other is counterclockwise.

In one embodiment of the present utility model, the contact position of the tension member and the elastic member is a rounded surface.

In one embodiment of the utility model, one of the tensioning elements is provided between two adjacent wedges.

In one embodiment of the utility model, the elastic member is an extension spring extending in the circumferential direction of the annular space and connected end to end.

In one embodiment of the utility model, the cage is of unitary construction.

In one embodiment of the utility model, a driving ring is arranged in the annular space, the tensioning components are connected to the driving ring, the base ring is provided with a driving hole, a driving rod is arranged in the driving hole in a penetrating mode, one end of the driving rod extends into the annular space and is connected with the driving ring, and the other end of the driving rod extends out of the annular space.

In one embodiment of the utility model, the base ring is provided with a plurality of transmission holes, a plurality of transmission rods are respectively penetrated in the plurality of transmission holes, the plurality of tensioning components are respectively connected with the plurality of transmission rods, one end of each transmission rod extends into the annular space, and the other end of each transmission rod extends out of the annular space.

Compared with the prior art, the technical scheme of the utility model has the following advantages: according to the tensioning and unlocking wedge type clutch, the tensioning component is arranged, so that when the outer ring and the inner ring of the clutch rotate along respective locking rotation directions, the clutch can be switched between a locking state and an unlocking state, more transmission possibility is realized, and the clutch is simple in structure and high in reliability.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

FIG. 1 is a schematic illustration of a wedge clutch of the prior art;

FIG. 2 is a schematic illustration of a tensionable and unlockable wedge clutch according to one embodiment of the present disclosure;

fig. 3 is a schematic diagram of a tightenable and unlockable wedge clutch according to a second embodiment of the present utility model.

Description of the specification reference numerals: 11. an inner ring; 12. an outer ring; 13. wedge blocks; 131. a groove; 14. a retainer; 15. an elastic member; 16. an annular space;

21. an inner ring; 22. an outer ring; 23. wedge blocks; 231. a groove; 24. a retainer; 25. an elastic member; 26. an annular space; 27. a tensioning member; 28. a transmission hole; 29. a transmission rod;

31. an inner ring; 32. an outer ring; 33. wedge blocks; 331. a groove; 34. a retainer; 35. an elastic member; 36. an annular space; 37. a tensioning member; 38. a drive ring; 39. a transmission hole; 310. a transmission rod.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Example 1

Referring to fig. 2, as shown in the drawings, a tightening and unlocking sprag clutch comprises an inner ring 21, an outer ring 22, a plurality of sprags 23, a retainer 24 and an elastic member 25, wherein the outer ring 22 is coaxially sleeved outside the inner ring 21 and forms an annular space 26 therebetween, the plurality of sprags 23, the retainer 24 and the elastic member are all arranged in the annular space 26, the plurality of sprags 23 are sequentially arranged along the circumferential direction of the annular space 26 and can unlock and lock the inner ring 21 and the outer ring 22, the retainer 24 is relatively fixed with the outer ring 22, the retainer isolates different sprags 23 and holds the plurality of sprags 23 in the annular space 26, the elastic member is elastically pressed in a groove 231 outside the plurality of sprags 23 and holds the sprags 23 in a locking posture, the outer ring 22 is a base ring relatively fixed with the retainer 24, and the inner ring 21 is a thrust ring for pushing the wedges 23 to swing;

the device further comprises a plurality of tensioning parts 27, wherein the tensioning parts 27 are arranged in the annular space 26 and are sequentially arranged along the circumferential direction of the annular space 26, the tensioning parts 27 are in one-to-one correspondence with the wedges 23, the tensioning parts 27 tightly support the elastic parts 25 on the counterclockwise sides of the corresponding wedges towards the radial inner sides of the elastic parts 25, the distance between the tensioning parts 27 and the corresponding wedges 23 can be adjusted to a first distance and a second distance, and the first distance is larger than the second distance;

when the sprag clutch is in a locked state, the outer ring 22 actively rotates clockwise or the inner ring 21 actively rotates counterclockwise, the distance between the tension member 27 and the corresponding sprag 23 is a first distance, the inner ring 21 and the sprag 23 are abutted against each other so that the sprag 23 is maintained in a locked state, and the inner ring 21 and the outer ring 22 are mutually locked;

when the sprag clutch is in the first unlocked state, the outer ring 22 actively rotates in a counterclockwise direction or the inner ring 21 actively rotates in a clockwise direction, the inner ring 21 and the sprag 23 mutually slip to push the sprag 23 to swing in a counterclockwise direction from a locking posture to an unlocking posture, and the inner ring 21 and the outer ring 22 are mutually unlocked;

when the sprag clutch is in the second unlocked state, the outer ring 22 actively rotates clockwise or the inner ring 21 actively rotates counterclockwise, the distance between the tension member 27 and the corresponding sprag 23 maintains the second distance, the elastic member 25 deforms and drives the corresponding sprag 23 to swing counterclockwise from the locking posture to the unlocking posture, and the inner ring 21 and the outer ring 22 are mutually unlocked.

The active rotation of the outer ring means that the rotation power drives the outer ring of the clutch to rotate, when the clutch is locked, the outer ring drives the inner ring to rotate, and when the clutch is unlocked, the outer ring rotates, but the inner ring does not rotate; the active rotation of the inner ring means that the rotation power drives the inner ring of the clutch to rotate, when the clutch is locked, the inner ring drives the outer ring to rotate, and when the clutch is unlocked, the inner ring rotates, but the outer ring does not rotate.

The structures and working principles of the inner ring, the outer ring, the wedge block, the retainer and the elastic component are all in the prior art, and are not described herein. In the technical scheme, the grooves are through grooves, and two groove ends of the through grooves are open, so that the elastic component is not easy to separate from the wedge block. When the tensioning part is close to the corresponding wedge, the deformation position of the elastic part is close to the corresponding wedge, the wedge can be switched to the unlocking state against the pressing force of the elastic part, and the adjustment of the posture of the wedge is realized by changing the tensioning position.

In a preferred embodiment of the present embodiment, the contact position between the tension member 27 and the elastic member 25 is a rounded surface. The smooth surface is easier to slide relative to the elastic component, and the elastic component is not damaged.

In the preferred embodiment of the present embodiment, a tensioning member 27 is provided between two adjacent wedges 23. Each tension part 27 corresponds to the wedge on the clockwise side, when the distance between each tension part and the corresponding wedge is a first distance, the force on the two sides of the wedge keeps the wedge in a locking posture, when the distance between each tension part and the corresponding wedge is a second distance, the force on the clockwise side of the wedge becomes smaller, the force on the anticlockwise side of the wedge becomes larger, and the wedge swings anticlockwise.

In a preferred embodiment of the present embodiment, the elastic member 25 is an extension spring extending in the circumferential direction of the annular space and connected end to end. The elastic member in this embodiment is an annular whole. In other embodiments, the elastic component is not annular, for example, two ends of the elastic component are respectively fixed with the inner ring. The tension spring has reliable elastic force and can be connected into a circular ring shape, so that the wedge block can be reliably kept in a locking posture.

In the preferred embodiment of the present embodiment, the holder 24 is integrally formed. The retainer in this embodiment is an annular unitary body. In other embodiments, the retainer is not annular, for example, two ends of the retainer are respectively fixed with respect to the inner ring.

In the preferred embodiment of the present embodiment, the outer ring 22 is provided with a plurality of transmission holes 28, a plurality of transmission rods 29 are respectively inserted into the plurality of transmission holes 28, the plurality of tension members 27 are respectively connected to the plurality of transmission rods 29, one ends of the transmission rods 29 extend into the annular space 26, and the other ends of the tension members 27 extend out of the annular space 26.

Example two

Referring to fig. 3, as shown in the drawings, a tightening and unlocking sprag clutch includes an inner ring 31, an outer ring 32, a plurality of sprags 33, a retainer 34 and an elastic member 35, wherein the outer ring 32 is coaxially sleeved outside the inner ring 31 and forms an annular space 36 therebetween, the plurality of sprags 33, the retainer 34 and the elastic member are all disposed in the annular space 36, the plurality of sprags 33 are sequentially disposed along the circumferential direction of the annular space 36 and can unlock and lock the inner ring 31 and the outer ring 32, the retainer 34 is fixed opposite to the inner ring 31, the retainer isolates the different sprags 33 and holds the plurality of sprags 33 in the annular space 36, the elastic member 35 is elastically pressed in a groove 331 outside the plurality of sprags 33 and holds the sprags 33 in a locked state, the inner ring 31 is a base ring relatively fixed to the retainer 34, and the outer ring 32 is a thrust ring for pushing the sprags 33 to swing;

the device further comprises a plurality of tensioning parts 37, wherein the tensioning parts 37 are arranged in the annular space 36 and are sequentially arranged along the circumferential direction of the annular space 36, the tensioning parts 37 are in one-to-one correspondence with the wedges 33, the tensioning parts 37 tightly support the elastic parts 35 on the clockwise side of the corresponding wedges towards the radial inner side of the elastic parts 35, the distance between the tensioning parts 37 and the corresponding wedges 33 can be adjusted to a first distance and a second distance, and the first distance is larger than the second distance;

when the sprag clutch is in a locked state, the outer race 32 actively rotates in a counterclockwise direction or the inner race 31 actively rotates in a clockwise direction, a distance between the tension member 37 and the corresponding sprag 33 is a first distance, the outer race 32 and the sprag 33 are abutted against each other so that the sprag 33 is maintained in a locked state, and the inner race 31 and the outer race 32 are mutually locked;

when the sprag clutch is in the first unlocked state, the outer ring 32 actively rotates in a clockwise direction or the inner ring 31 actively rotates in a counterclockwise direction, the outer ring 32 and the sprag 33 mutually slip to push the sprag 33 to swing from a locking posture to an unlocking posture in a clockwise direction, and the inner ring 31 and the outer ring 32 are mutually unlocked;

when the sprag clutch is in the second unlocked state, the outer ring 32 actively rotates in a counterclockwise direction or the inner ring 31 actively rotates in a clockwise direction, the distance between the tensioning member 37 and the corresponding sprag 33 maintains a second distance, the elastic member 35 deforms and drives the corresponding sprag 33 to swing from the locking posture to the unlocking posture in a clockwise direction, and the inner ring 31 and the outer ring 32 are mutually unlocked.

The active rotation of the outer ring means that the rotation power drives the outer ring of the clutch to rotate, when the clutch is locked, the outer ring drives the inner ring to rotate, and when the clutch is unlocked, the outer ring rotates, but the inner ring does not rotate; the active rotation of the inner ring means that the rotation power drives the inner ring of the clutch to rotate, when the clutch is locked, the inner ring drives the outer ring to rotate, and when the clutch is unlocked, the inner ring rotates, but the outer ring does not rotate.

The structures and working principles of the inner ring, the outer ring, the wedge block, the retainer and the elastic component are all in the prior art, and are not described herein. In the technical scheme, the grooves are through grooves, and two groove ends of the through grooves are open, so that the elastic component is not easy to separate from the wedge block. When the tensioning part is close to the corresponding wedge, the deformation position of the elastic part is close to the corresponding wedge, the wedge can be switched to the unlocking state against the pressing force of the elastic part, and the adjustment of the posture of the wedge is realized by changing the tensioning position.

In a preferred embodiment of the present embodiment, the contact position between the tension member 37 and the elastic member 35 is a rounded surface. The smooth surface is easier to slide relative to the elastic component, and the elastic component is not damaged.

In the preferred embodiment of this embodiment, a tensioning element 37 is provided between two adjacent wedges 33. Each tensioning part 37 corresponds to the wedge on the clockwise side of the tensioning part, when the distance between each tensioning part and the corresponding wedge is a first distance, the force on the two sides of the wedge keeps the wedge in a locking posture, when the distance between each tensioning part and the corresponding wedge is a second distance, the force on the clockwise side of the wedge is reduced, the force on the anticlockwise side of the wedge is increased, and the wedge swings anticlockwise.

In a preferred embodiment of the present embodiment, the elastic member 35 is an extension spring extending in the circumferential direction of the annular space 36 and connected end to end. The elastic member in this embodiment is an annular whole. In other embodiments, the elastic component is not annular, for example, two ends of the elastic component are respectively fixed with the inner ring. The tension spring has reliable elastic force and can be connected into a circular ring shape, so that the wedge block can be reliably kept in a locking posture.

In the preferred embodiment of the present embodiment, the holder 34 is integrally formed. The cage 34 in this embodiment is a ring-shaped unitary body. In other embodiments, the retainer is not annular, for example, two ends of the retainer are respectively fixed with respect to the inner ring.

In the preferred embodiment of the present embodiment, a driving ring 38 is disposed in the annular space 36, the plurality of tensioning members 37 are connected to the driving ring 38, the inner ring 31 is provided with a driving hole 39, a driving rod 310 is inserted into the driving hole 39, one end of the driving rod 310 extends into the annular space 36 and is connected to the driving ring 38, and the other end of the driving rod 310 extends out of the annular space 36.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (8)

1. The utility model provides a tensioning unblock's wedge clutch, includes an inner circle, an outer lane, a plurality of wedges, a holder and an elastic component, the outer lane coaxial sleeve is located the outside of inner circle and forms an annular space between the two, a plurality of wedges, the holder and the elastic component all are located in the annular space, a plurality of wedges are arranged in proper order along the circumference of annular space and can unblock and lock the inner circle and the outer lane, the holder keeps apart different wedges and keeps a plurality of wedges in annular space, the elastic component elasticity compresses tightly in the recess of a plurality of wedges outside and keeps the wedge in locking gesture, outer lane and the inner circle, one of them is the base race that is fixed relatively with the holder, another is the thrust collar that promotes the pendulum wedge;

the device is characterized by further comprising a plurality of tensioning components, wherein the tensioning components are arranged in the annular space and are sequentially arranged along the circumferential direction of the annular space, the tensioning components are in one-to-one correspondence with the wedges, the tensioning components tightly support the elastic components on the opposite sides of the corresponding wedges towards the radial inner sides of the elastic components, the circumferential positions of the tensioning components along the annular space are adjustable, the distance between the tensioning components and the corresponding wedges is adjustable to a first distance and a second distance, and the first distance is larger than the second distance;

when the wedge block clutch is in a locking state, the outer ring actively rotates in a forward direction or the inner ring actively rotates in a reverse direction, the distance between the tensioning component and the corresponding wedge block is a first distance, the thrust ring and the wedge block are mutually propped to enable the wedge block to be kept in a locking state, and the inner ring and the outer ring are mutually locked;

when the wedge block clutch is in a first unlocking state, the outer ring actively rotates in the reverse direction or the inner ring actively rotates in the forward direction, the thrust ring and the wedge block mutually slip to push the wedge block to reversely swing from a locking posture to an unlocking posture, and the inner ring and the outer ring are mutually unlocked;

when the wedge type clutch is in a second unlocking state, the outer ring actively rotates in the forward direction or the inner ring actively rotates in the reverse direction, the distance between the tensioning component and the corresponding wedge is kept at a second distance, the elastic component deforms and drives the corresponding wedge to reversely swing from the locking posture to the unlocking posture, and the inner ring and the outer ring are mutually unlocked.

2. The tension unlocked wedge clutch of claim 1, wherein one of said forward direction and said reverse direction is clockwise and the other is counter-clockwise.

3. The tension-unlock wedge clutch according to claim 1, wherein a contact position of the tension member and the elastic member is a rounded surface.

4. A tension unlocked wedge clutch as claimed in claim 1 wherein one said tension member is disposed between adjacent two said wedges.

5. The tension unlocked wedge clutch of claim 1, wherein the resilient member is an extension spring extending circumferentially of the annular space and connected end to end.

6. The tension unlocked wedge clutch of claim 1, wherein the cage is of unitary construction.

7. The tension and unlock sprag clutch according to claim 1, wherein a driving ring is provided in said annular space, said plurality of tension members are connected to said driving ring, said base ring is provided with a driving hole, a driving rod is inserted in said driving hole, one end of said driving rod extends into said annular space and is connected to said driving ring, and the other end of said driving rod extends out of said annular space.

8. The tension and unlocking wedge clutch according to claim 1, wherein the base ring is provided with a plurality of transmission holes, a plurality of transmission rods are respectively penetrated in the plurality of transmission holes, the plurality of tension components are respectively connected with the plurality of transmission rods, one end of each transmission rod extends into the annular space, and the other end of each transmission rod extends out of the annular space.