CN217761782U - A manual clutch structure - Google Patents

Abstract

The utility model relates to the technical field of clutches, and discloses a manual clutch structure, which comprises a clutch seat, an inner spline sleeve and an outer spline sleeve. A rotating shaft is positioned circumferentially by means of a key connection, the outer spline sleeve is used to fix the sleeve on the outside of the second rotating shaft, the inner spline sleeve is sleeved with a deep groove ball bearing, and the clutch seat is rotatably connected with a dial shaft, the dial plate A toggle plate is fixed on the shaft, and the toggle plate is rotatably connected with a clamping claw. The two clamping arms of the clamping claw block the two sides of the outer ring of the deep groove ball bearing. The toggle plate shaft is fixedly connected with a toggle handle. Move the toggle handle, the toggle handle rotates with the dial shaft, the dial shaft rotates with the toggle plate, the toggle plate rotates with the gripper moves, the gripper moves with the deep groove ball bearing to move axially, the deep groove ball bearing moves axially. The axial movement of the groove ball bearing brings the axial movement of the inner spline sleeve, and the inner spline sleeve realizes the switching between the separation state and the spline matching state through the axial reciprocating movement and the outer spline sleeve.

Description

A manual clutch structure

technical field

The utility model relates to the technical field of clutches, in particular to a manual clutch structure.

Background technique

Clutch structures are frequently used in vehicle engineering and industry. For example, the automobile clutch is a kind of clutch structure. The automobile clutch needs to realize separation and engagement during the rotation process, which is usually achieved by friction. This implementation method is not suitable for use in the industrial field due to reasons such as complex structure and imprecise transmission. In the industrial field, the spline clutch structure is usually used, and the inner spline sleeve and the outer spline sleeve are respectively installed on the two coaxially arranged rotating shafts that need to be transmitted. The inner spline sleeve or the outer spline sleeve can only The rotating shaft slides back and forth, so that the inner spline sleeve and the outer spline sleeve can be switched between the spline fit state and the separated state. When the inner spline sleeve and the outer spline sleeve are in the spline fit state, the purpose of torque transmission is realized. This transmission method is more accurate and stable, and can withstand larger torque.

At present, the spline clutch structure is usually provided with structures such as circumferential grooves or circumferential flanges on reciprocating sliding parts (inner spline sleeves or outer spline sleeves), and then use a shift fork to clamp the circumferential grooves or circumferential flanges , turn or move the fork to drive the parts to slide back and forth to realize state switching. However, the reciprocating sliding part needs to rotate at least when it is in the spline fit state, and the shift fork is in a static state at this time, that is, the reciprocating sliding part is rotating relative to the shift fork, so the shift fork and the circumferential flange or circumferential groove are easy to produce Friction, it is necessary to consider the wear resistance of parts and other issues. The reciprocating sliding parts themselves need to be machined with circumferential grooves or circumferential flanges, which increases the complexity of the structure. Considering the wear resistance problem, surface hardening treatment is also required, which will undoubtedly increase the process procedure and process cost of the product. In addition, if the circumferential groove or the circumferential flange is severely worn and needs to be replaced, it is necessary to replace the reciprocating sliding parts as a whole. This kind of part needs to be customized and processed again, which not only consumes maintenance and process time, but also greatly increases Product repair costs.

Utility model content

The utility model provides a manual clutch structure in order to overcome the deficiencies in the above-mentioned prior art.

The utility model realizes above-mentioned purpose through following technical scheme.

A manual clutch structure, including a clutch seat, an inner spline sleeve and an outer spline sleeve arranged coaxially, wherein the inner spline sleeve is used for sliding sleeve on the outside of the first rotating shaft, and the inner spline sleeve and the first rotating shaft pass through the key The way of connection is circumferential positioning, the outer spline sleeve is used for fixed sleeve on the outside of the second rotating shaft, the outer side of the inner spline sleeve is sleeved with deep groove ball bearings, and the inner ring of the inner spline sleeve and deep groove ball bearing is axially fixed, The clutch seat is rotatably connected with a dial shaft, and the axis of the dial shaft is perpendicular to the shaft center of the inner spline sleeve. Two clamping arms are respectively blocked on both sides of the outer ring of the deep groove ball bearing. A toggle handle is fixedly connected to the dial shaft. When the toggle handle is pulled, the dial shaft rotates with the dial shaft, and the dial shaft rotates with the The toggle plate rotates, the toggle plate rotates and the jaws move, the jaws move and the deep groove ball bearings move axially, the deep groove ball bearings move axially and the inner spline sleeve moves axially, and the inner spline sleeve passes through The axial reciprocating movement and the external spline sleeve realize the switching between the separated state and the spline fit state. The spline fit state can also be called the mesh state.

This solution is mainly used in the industrial field, and is arranged between the driving mechanism and the driven mechanism to transmit torque and disconnect torque transmission. For example, the driving mechanism is a gearbox, and the driven mechanism is a load mechanism. When the load mechanism needs to be repaired and shut down , or other circumstances need to first stop the load mechanism, then you can use the manual clutch structure of this program to temporarily cut off the torque transmission, so that the load mechanism first stops. The first rotating shaft and the second rotating shaft in this scheme belong to the driving mechanism and the driven mechanism respectively, that is, one is the driving shaft and the other is the driven shaft, that is to say, the inner spline sleeve is slidably sleeved on the driving shaft or the driven shaft All axes are available, and there are no restrictions. From the analysis of structure and principle, when the program is switching states, the jaws are limited by the deep groove ball bearing and the toggle plate, so they can only do translational movement along the arc around the axis of the toggle plate shaft, and the deep groove ball The bearing moves linearly along the axis of the first rotating shaft, which will cause a certain relative movement between the jaws and the outer ring of the deep groove ball bearing. The jaws cannot be separated from the deep groove ball bearings, that is, the two arms of the jaws are always respectively blocked on both sides of the outer ring of the deep groove ball bearing. For this reason, the gap between the two arms and the outer ring of the deep groove ball bearing Clearance fit can be used, or there is a small gap between the two clamp arms and the outer ring of the deep groove ball bearing, which can not only ensure that the jaws can move the deep groove ball bearing stably and effectively, but also allow There is a certain relative movement between the jaws and the outer ring of the deep groove ball bearing. The inner ring and outer ring of the deep groove ball bearing have good relative rotation performance, so when the inner spline sleeve rotates, there is no need to think too much about whether the outer ring of the deep groove ball bearing rotates accordingly. Deep groove ball bearings can bear radial load and axial load, and have the function of self-aligning. Even if the axial load causes a certain axial misalignment between the bearing outer ring and the bearing inner ring, it can still work normally. After the axial load disappears , the bearing outer ring and bearing inner ring will automatically return to their original positions. In this solution, the outer ring of the deep groove ball bearing is driven by the jaws, which will inevitably generate a certain axial force on the deep groove ball bearing, which can be well reconciled by using the characteristics of the deep groove ball bearing itself.

This scheme adopts deep groove ball bearings, and does not need to set circumferential grooves or circumferential flanges on the inner spline sleeve, which simplifies the structure. Deep groove ball bearings are cheap as standard parts, easy to purchase, good wear resistance, and have cushioning Harmonizing effect, avoiding the axial force directly acting on the inner spline sleeve, not easy to wear during operation, the jaws cooperate with the standard deep groove ball bearings, so that even if the jaws, which are the weak links in the mechanism, are damaged, it is easier to replace them convenient. In addition, this scheme can realize dynamic separation, although it may cause greater wear or damage to individual parts in the manual clutch structure, but in an emergency, the inner spline sleeve and the outer spline sleeve can be disengaged to prevent the active mechanism or The driven mechanism is damaged or other accidents play an emergency protection role.

As a further improved structural form, the above-mentioned internal spline sleeve and the first rotating shaft are in a spline-type sliding fit. The inner spline sleeve needs to slide back and forth on the first rotating shaft, and it needs to rotate in the circumferential direction and transmit torque. If the flat key type sliding fit is used, after a period of operation, the inner spline sleeve, the first rotating shaft and the flat key are easily connected. Wear and tear will cause the gap in all directions to become larger, especially the circumferential gap will become larger, which will reduce the matching effect and lead to unstable and inaccurate torque transmission. This scheme adopts spline sliding fit, the spline connection has good guiding performance, and the inner spline sleeve will not produce radial rotation during the axial sliding process, which can effectively avoid the above problems, improve the reliability and stability of the structure, and make the manual The switching of the clutch structure is smoother, and the operation is more convenient and labor-saving.

As a further improved structure, the above-mentioned clutch seat is a box body, the inner spline sleeve and the outer spline sleeve are located in the box body, the two ends of the dial shaft are exposed to the box body, there are two toggle handles, two The moving handles are respectively fixedly connected to the two ends of the dial shaft, the two moving handles are parallel to each other, and the two moving handles are fixedly connected to a horizontal handle. The box body in this structure plays the role of protection and protection, and the box body can be connected to the driving mechanism or the driven mechanism, and can also be fixed on the foundation for fixing the driving mechanism or the driven mechanism. The first rotating shaft and the second rotating shaft can extend into the case from opposite ends of the case respectively. The two toggle handles are fixedly connected to the same horizontal handle, and the two toggle handles can be driven by pulling the horizontal handle, which is convenient for applying force. The force of the paddle shaft is more balanced, so the center of the horizontal handle is preferably parallel to the axis of the paddle shaft.

As a further improved structure, a locking member is movably connected to the above-mentioned toggle handle or the clutch seat. When the inner spline sleeve and the outer spline sleeve are in a separated state, the moving locking member blocks the toggle handle to make the toggle handle In a fixed state, when the locking member is restored to its original position, the toggle handle resumes its active state. The structure clamps the toggle handle through the locking member, so that the toggle plate cannot rotate, so that the inner spline sleeve and the outer spline sleeve are kept in a stable state of separation, the structure is simple and effective, and the inner spline sleeve and the outer spline sleeve need When it is in the separated state for a long time, there is no need to manually hold the toggle handle, which saves manpower.

As a further improved structure, the teeth of the above-mentioned inner spline sleeve are chamfered at one end close to the outer spline sleeve in the separated state, or the teeth of the outer spline sleeve are close to the end of the inner spline sleeve in the separated state. One end is provided with chamfers, or the teeth of the inner spline sleeve are provided with chamfers at the end close to the outer spline sleeve in the separated state, and the teeth of the outer spline sleeve are also provided at the end close to the inner spline sleeve in the separated state. There are chamfers. After practical application, it is found that when the manual clutch structure of the utility model, the inner spline sleeve and the outer spline sleeve are switched from the separated state to the spline fit state, the teeth of the inner spline sleeve and the tooth grooves of the outer spline sleeve begin to align. There is a certain degree of difficulty in bit matching. Generally speaking, it is difficult to bite the inner spline sleeve and the outer spline sleeve. Therefore, the teeth of the inner spline sleeve and the teeth of the outer spline sleeve in this structure need to bite At least one end of the spline is provided with a chamfer, so that the inner spline sleeve and the outer spline sleeve can enter the spline fit state more smoothly when they bite.

As a further improved structure, the above-mentioned clutch seat is provided with an elastic member which tends to stretch itself, one end of the elastic member is against the clutch seat, and the other end of the elastic member is against the toggle plate, and the elastic member tends to stretch to make the toggle plate The plates tend to rotate, and this rotation is in such a direction that the inner and outer splined housings tend to be in a splined fit. Wherein, the elastic member may be a compression spring, a gas spring or the like. When the inner spline sleeve and the outer spline sleeve are switched from the separated state to the spline fit state, the elastic member in this scheme can play a role in assisting. When the inner spline sleeve and the outer spline sleeve are in the spline fit state, The elastic member can prevent the inner spline sleeve from moving axially and play a role of maintaining engagement.

Compared with the prior art, the utility model mainly has the following beneficial effects: the deep groove ball bearing is adopted, and there is no need to set a circumferential groove or a circumferential flange on the inner spline sleeve, the structure is simplified, and the deep groove ball bearing is used as a standard part. Inexpensive, easy to purchase, good wear resistance, buffering and reconciling, avoiding axial force directly acting on the inner spline sleeve, and not easy to wear during operation, the jaws are matched with standard deep groove ball bearings, so as a mechanism Even if the jaws in the middle and weak link are damaged, it is more convenient to replace; the two toggle handles can be driven by pulling the horizontal handle, and the two toggle handles drive the dial shaft to rotate synchronously at both ends of the dial shaft, which is convenient for applying force and The force applied to the dial shaft is more balanced; the inner spline sleeve and the first shaft adopt spline sliding fit, the spline connection has good guiding performance, and the inner spline sleeve will not produce radial rotation during the axial sliding process, which improves The reliability and stability of the structure make the switching of the manual clutch structure more smooth, and the operation is more convenient and labor-saving; the locking member is used to prevent the toggle plate from rotating, so that the inner spline sleeve and the outer spline sleeve are kept in a separated state stably, and the structure is simple Effective, when the inner spline sleeve and the outer spline sleeve need to be separated for a long time, there is no need to manually hold the toggle handle, which saves manpower.

Description of drawings

Fig. 1 is a partially cut-away three-dimensional structural schematic diagram of Embodiment 1 of the present invention in a separated state.

Fig. 2 is a schematic cross-sectional structural diagram of Embodiment 1 of the present invention in a state of spline fit.

Fig. 3 is a schematic cross-sectional structure diagram of Embodiment 1 of the present invention in a separated state.

Fig. 4 is a three-dimensional structural schematic diagram of the shifting plate shaft, the shifting plate and the jaws in the assembled state in the first embodiment of the present utility model.

Fig. 5 is a schematic diagram of the three-dimensional structure of the second embodiment of the utility model in a separated state after being partially cut away.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. The accompanying drawings are for illustrative purposes only and should not be construed as limiting the patent.

In order to describe this embodiment more concisely, some components that are known to those skilled in the art but not related to the main content of the present utility model in the drawings or descriptions will be omitted. In addition, for the convenience of expression, some parts in the drawings will be omitted, enlarged or reduced, but it does not represent the size or overall structure of the actual product.

Embodiment 1, as shown in Figure 1, Figure 2 and Figure 3, a manual clutch structure, the manual clutch structure of this embodiment is arranged between the driving mechanism and the driven mechanism, wherein the driving mechanism is a gear box (not shown in the figure shown), the output shaft 11 of the gearbox is the output shaft of the driving mechanism, the driven mechanism is the load mechanism (not shown in the figure), and the input shaft 12 of the load mechanism is the input shaft of the driven mechanism. From the perspective of torque transmission, the output shaft 11 of the gearbox is the driving shaft, the input shaft 12 of the load mechanism is the driven shaft, and the output shaft 11 and the input shaft 12 are coaxially arranged. The manual clutch structure of this embodiment combines the output shaft 11 Connected and disconnected with the input shaft 12 for torque transfer and disconnected for torque transfer.

The manual clutch structure of this embodiment includes a box body 21 , an inner spline sleeve 41 and an outer spline sleeve 51 . Wherein the two ends of the box body 21 can be respectively fixed on the body of the gear box and the load mechanism. In other embodiments, the box body 21 can also be fixed on the foundation. The output shaft 11 and the input shaft 12 extend into the box body 21 from both ends of the box body 21 respectively, and there is a certain distance between the end surface of the output shaft 11 and the end surface of the input shaft 12 . The end of the output shaft 11 is an external spline segment. The outer side of the inner spline sleeve 41 in this embodiment is basically in the shape of a stepped shaft and forms a flat shoulder. The inner side of the inner spline sleeve 41 is provided with a coaxial small diameter inner The spline section and the large-diameter inner spline section, the small-diameter inner spline section and the outer spline section of the output shaft 11 are engaged, and the inner spline sleeve 41 and the output shaft 11 can slide relatively, that is, the inner spline sleeve 41 and the output shaft Between 11 is the spline type sliding fit. The external spline sleeve 51 is fixedly sleeved on the outside of the input shaft 12, and the external spline sleeve 51 and the input shaft 12 can be fixed in various ways, such as shrink-fit tight connection, welding, key connection and screw locking, etc. Both the inner spline sleeve 41 and the outer spline sleeve 51 are arranged in the box body 21, and the separation and engagement of the large-diameter inner spline segment of the inner spline sleeve 41 and the outer spline sleeve 51 are realized by sliding the inner spline sleeve 41 back and forth , The box body 21 plays a protective and protective role.

The outer side of the inner spline sleeve 41 is sleeved with a deep groove ball bearing 42 and a positioning ring 43 , and a snap spring 44 is clamped on the outer side of the inner spline sleeve 41 . One side of the inner ring of the deep groove ball bearing 42 abuts against the shoulder of the inner spline sleeve 41, and the other side of the inner ring of the deep groove ball bearing 42 abuts against one end of the positioning ring 43, and the other end of the positioning ring 43 utilizes a snap spring 44 blocks, and the inner ring of the deep groove ball bearing 42 is axially fixed relative to the inner spline sleeve 41 like this.

As shown in Figures 1 and 4, the case 21 is rotatably connected with a dial shaft 31, the axis of the dial shaft 31 is perpendicular to the shaft center of the inner spline sleeve 41, and the two ends of the dial shaft 31 are exposed to the case body twenty one. A toggle plate 32 is fixed on the dial shaft 31 , and a through hole is arranged on the toggle plate 32 , and the axis of the through hole is parallel to the axis of the dial shaft 31 . The toggle plate 32 is rotatably connected with a jaw 33, one end of the jaw 33 is a pin shaft, and the pin shaft passes through the through hole of the toggle plate 32 and is sleeved with a small retaining spring to realize the clamping jaw 33 and the toggle plate 32. Relatively rotate and the jaws 33 cannot break away from the toggle plate 32 , the rotation axis of the jaws 33 is parallel to the axis of the toggle shaft 31 . The other end of the jaw 33 is two clamping arms, and the two clamping arms respectively block the two sides of the outer ring of the deep groove ball bearing 42 . Analyzing from the structure and principle, in this embodiment, when the state is switched, the jaw 33 is limited by the deep groove ball bearing 42 and the toggle plate 32, and can only translate along the circular arc around the axis of the toggle plate shaft 31 Movement, the deep groove ball bearing 42 moves linearly along the axis of the output shaft 11, which will cause a certain relative movement between the jaws 33 and the outer ring of the deep groove ball bearing 42. And jaw 33 can't break away from deep groove ball bearing 42, promptly two clamping arms of jaw 33 block the both sides of the outer ring of deep groove ball bearing 42 respectively all the time, for this reason, two clamping arms and deep groove ball bearing 42 Clearance fit can be used between the outer rings of the outer rings, which can not only ensure that the jaws 33 can drive the deep groove ball bearing 42 stably and effectively when moving, but also allow a certain relative distance between the outer rings of the jaws 33 and the deep groove ball bearing 42. move. The inner ring and the outer ring of the deep groove ball bearing 42 have good relative rotational performance, so when the inner spline sleeve 41 rotates, whether the outer ring of the deep groove ball bearing 42 rotates accordingly need not be considered too much. In other embodiments, a small gap may also be left between the two clamping arms and both sides of the outer ring of the deep groove ball bearing. In order to increase the contact area between the clamp arm and the side surface of the outer ring of the deep groove ball bearing 42 , the end of the clamp arm is arranged in an arc shape, and the radius of the arc shape is equal to or close to the inner diameter of the outer ring of the deep groove ball bearing 42 .

As shown in Fig. 1, Fig. 2 and Fig. 3, two toggle handles 34 are fixedly connected to the dial shaft 31, and the two toggle handles 34 are fixedly connected to the two ends of the dial shaft 31 respectively. The toggle handle 34 can be fixedly connected to the toggle shaft 31 in various ways. For example, in this embodiment, a flat position is processed near the end of the toggle shaft 31, and external threads are processed beside the flat position. The end is processed with an open slot, and the flat part is clamped by the open slot, and a connecting nut is fitted on the external thread, and the locking nut is used to clamp the toggle handle 34, so that the toggle handle 34 and the dial shaft 31 cannot move relatively. Moving the toggle handle 34 can drive the dial shaft 31 to rotate. The two toggle handles 34 in this embodiment are all fixedly connected to the toggle shaft 31 in this way. The two toggle handles 34 are parallel to each other, and the two toggle handles 34 are also fixedly connected to the same horizontal handle 35 , for example, welded on the same horizontal handle 35 , and the center of the horizontal handle 35 is parallel to the axis of the dial shaft 31 .

The toggle handle 34 and the horizontal handle 35 are used for manual operation to rotate the dial shaft 31. When the toggle handle 34 or the horizontal handle 35 is pulled, the toggle handle 34 rotates with the dial shaft 31 around the axis of the dial shaft 31. When the dial shaft 31 rotates, the dial shaft 32 rotates around the axis of the dial shaft 31, and the dial shaft 32 moves with the jaws 33, and the jaws 33 move with the deep groove ball bearing 42 axially. When the deep groove ball bearing 42 moves axially, the inner spline sleeve 41 moves axially, thereby realizing the manual separation and engagement of the inner spline sleeve 41 and the outer spline sleeve 51 . The two toggle handles 34 in this embodiment are jointly fixedly connected on the same horizontal handle 35, and the two toggle handles 34 can be driven by pulling the horizontal handle 35, which is convenient for applying force. The two ends synchronously drive the dial shaft 31 to rotate, and the applied force to the dial shaft 31 is more balanced.

In this embodiment, a slide hole is provided on the toggle handle 34, and a lock pin 36 is slidably connected to the slide hole, and the lock pin 36 forms a locking member. Sliding lock pin 36 can make lock pin 36 be exposed in toggle handle 34 and indent in toggle handle 34, and box body 21 is provided with separated state keyhole, when inner spline sleeve 41 and outer spline sleeve 51 are in separated state , slide the lock pin 36 so that the lock pin 36 is exposed to the toggle handle 34 and inserted into the separated state lock hole of the casing 21, thereby using the lock pin 36 to block the toggle handle 34, and the toggle handle 34 cannot rotate after being stuck. , that is, the toggle handle 34 is in a fixed state. Sliding the lock pin 36 makes the lock pin 36 retract in the toggle handle 34, and the toggle handle 34 resumes its active state. Now, pulling the toggle handle 34 can drive the inner spline sleeve 41 to slide to switch states. In this embodiment, the toggle handle 34 is blocked by the lock pin 36, so that the toggle plate 32 cannot rotate, so that the inner spline sleeve 41 and the outer spline sleeve 51 are kept in a separated state stably, the structure is simple and effective, and the inner spline sleeve 41 and the outer spline sleeve 51 need to be in the separated state for a long time, there is no need to manually hold the toggle handle 34, which saves manpower. Of course, an engagement state lock hole can also be set on the box body. When the inner spline sleeve and the outer spline sleeve are in the engagement state, the sliding lock pin makes the lock pin insert into the engagement state lock hole, thereby using the lock pin to block the dial. Move the handle so that the toggle handle is in a fixed state, and the inner spline sleeve and the outer spline sleeve are always kept in an engaged state, which can prevent the inner spline sleeve from accidentally disengaging due to equipment vibration and other reasons.

In addition, the teeth of the inner spline sleeve 41 in this embodiment are chamfered at one end close to the outer spline sleeve 51 in the separated state, and the teeth of the outer spline sleeve 51 are close to the inner spline sleeve 41 in the separated state. One end of the spline is also provided with a chamfer, generally speaking, the teeth of the inner spline sleeve 41 and the teeth of the outer spline sleeve 51 need to be chamfered at the ends where the teeth of the outer spline sleeve 51 need to bite each other, so that the inner spline sleeve 41 When biting with the external spline sleeve 51, it can enter the spline fit state more smoothly.

The inner spline sleeve 41 in this embodiment slides reciprocally on the output shaft 11, and at the same time needs to rotate in the circumferential direction and transmit torque, so the spline type sliding fit is adopted, and the spline connection has good guidance. There will be no radial rotation during the sliding process, which improves the reliability and stability of the structure, makes the switching of the manual clutch structure smoother, and the operation is more convenient and labor-saving. Deep groove ball bearing 42 can bear radial load and axial load, and has the function of self-aligning. Even if the bearing outer ring and bearing inner ring have a certain axial misalignment under axial load, it can still work normally. After that, the bearing outer ring and bearing inner ring will automatically return to their original positions. In this embodiment, the outer ring of the deep groove ball bearing 42 is driven by the jaws 33, which will inevitably generate a certain axial force on the deep groove ball bearing 42, which can be well adjusted by using the characteristics of the deep groove ball bearing 42 itself.

In this embodiment, the deep groove ball bearing 42 is used, and there is no need to arrange a circumferential groove or a circumferential flange on the inner spline sleeve 41 to cooperate with the shift fork, so as to simplify the structure, and the deep groove ball bearing 42 is cheap as a standard part. It is easy to purchase, has good wear resistance, has the function of buffering and reconciling, and prevents the axial force from acting directly on the inner spline sleeve 41, and is not easy to wear during operation. The jaws 33 cooperate with the standard deep groove ball bearing 42, so as Even if the jaw 33 of the weak link in the mechanism is damaged, it is also relatively convenient to replace.

Embodiment 2, as shown in FIG. 5 , this embodiment is improved on the basis of Embodiment 1. In this embodiment, a blind hole is provided on the inner wall of the box body 21 , and a fixed pin 61 is connected to the blind hole by interference fit. In this embodiment, a compression spring 62 is provided between the box body 21 and the toggle plate 32, and the compression spring is an elastic member that tends to stretch itself. One end of the compression spring 62 is against the box body 21 and tightly sleeved on the outside of the fixing pin 61 , and the other end of the compression spring 62 is against the toggle plate 32 . The compression spring 62 tends to elongate so that the toggle plate 32 tends to rotate, and the direction of rotation is to make the inner spline sleeve 41 and the outer spline sleeve 51 tend to be in a spline fit state. When the inner spline sleeve 41 and the outer spline sleeve 51 are switched from the separated state to the spline fit state, the compression spring 62 in this embodiment can play a role in assisting, and the inner spline sleeve 41 and the outer spline sleeve 51 are in the When the splines are mated, the compression spring 62 can prevent the inner spline sleeve 41 from moving axially and maintain the engagement. The compression spring 62 is easy to install, one end of which is sleeved on the fixed pin 61, and is always clamped between the box body 21 and the toggle plate 32, so it is not easy to disengage. Of course, a groove can also be provided on the toggle plate, and the end of the compression spring can be embedded in the groove to further prevent the compression spring from coming out.

The telescoping state setting of the compression spring 62 has a corresponding relationship with the separation and engagement state of the manual clutch structure. When the compression spring 62 is in a relatively compressed state, the inner spline sleeve 41 and the outer spline sleeve 51 are in a separated state. In the extended state, the inner spline sleeve 41 and the outer spline sleeve 51 are in an engaged state. The elastic force of the compression spring 62 needs to be overcome when the inner spline sleeve 41 and the outer spline sleeve 51 are manually switched from the engaged state to the disengaged state. In addition, even with the elastic force of the compression spring 62 , the locking effect of the locking pin 36 is still effective.

The above are only two specific embodiments of the present utility model, but the design concept of the present utility model is not limited thereto. within the scope of the new protection.

Claims (6)

1. A manual clutch structure is characterized by comprising a clutch base, an inner spline sleeve and an outer spline sleeve which are coaxially arranged, wherein the inner spline sleeve is used for being sleeved on the outer side of a first rotating shaft in a sliding mode, the inner spline sleeve and the first rotating shaft are circumferentially positioned in a key connection mode, the outer spline sleeve is fixedly sleeved on the outer side of a second rotating shaft, a deep groove ball bearing is sleeved on the outer side of the inner spline sleeve, inner rings of the inner spline sleeve and the deep groove ball bearing are axially fixed, a shifting plate shaft is connected to the clutch base in a rotating mode, the axis of the shifting plate shaft is perpendicular to that of the inner spline sleeve, a shifting plate is fixed to the shifting plate shaft, a clamping jaw is connected to the shifting plate in a rotating mode, two clamping arms of the clamping jaw are respectively blocked on two sides of an outer ring of the deep groove ball bearing, a shifting handle is fixedly connected to the shifting plate shaft, the shifting handle drives the shifting plate shaft to rotate, the shifting plate shaft drives the shifting plate to rotate, the shifting plate rotates to drive the clamping jaw to move, the clamping jaw moves to drive the deep groove ball bearing to axially move, the deep groove ball bearing to axially, and the inner spline sleeve to move axially, and the spline sleeve realizes the spline sleeve to realize the separation state and the matching state and the outer spline sleeve through axial reciprocating movement and the outer spline sleeve.

2. A manual clutching structure as claimed in claim 1, wherein the internally splined sleeve is a splined slip fit with the first rotatable shaft.

3. The manual clutch structure according to claim 1, wherein the clutch seat is a box body, the internal spline sleeve and the external spline sleeve are both located in the box body, two ends of the dial plate shaft are exposed out of the box body, the two dial handles are respectively and fixedly connected to two ends of the dial plate shaft, the two dial handles are parallel to each other, and the two dial handles are both fixedly connected to one transverse handle.

4. The manual clutch structure according to claim 1, wherein the toggle handle or the clutch seat is movably connected with a locking member, when the internal spline housing and the external spline housing are in a separated state, the locking member is moved to clamp the toggle handle so that the toggle handle is in a fixed state, and when the locking member is returned to an original position, the toggle handle is returned to a movable state.

5. The manual clutch structure according to claim 1, wherein a chamfer is provided at one end of the teeth of the internal spline housing close to the external spline housing in the disengaged state, or a chamfer is provided at one end of the teeth of the external spline housing close to the internal spline housing in the disengaged state, or a chamfer is provided at one end of the teeth of the internal spline housing close to the external spline housing in the disengaged state, and a chamfer is also provided at one end of the teeth of the external spline housing close to the internal spline housing in the disengaged state.

6. The manual clutch structure according to claim 1, wherein the clutch seat is provided with an elastic member which tends to stretch itself, one end of the elastic member abuts against the clutch seat, and the other end of the elastic member abuts against the driver plate, the elastic member tending to stretch so that the driver plate tends to rotate in a direction in which the inner spline housing and the outer spline housing tend to be in spline engagement.

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