CN217502519U - Transmission mechanism - Google Patents

Abstract

The utility model relates to a transmission mechanism, including supporting seat, pivot, rotation cover, driving medium and pretension piece. The utility model discloses a set up rotate cover, driving medium and pretension piece, because it locates to rotate the coaxial fixed cover of cover in the pivot, the coaxial cover of driving medium is located rotate to sheathe in, and pretension piece is located just can order about in the pivot driving medium part butt in rotate cover one end terminal surface, when being equipped with the driving medium in the pivot, via the driving medium with the butt that rotates the cover reaches the crimping effect of pretension piece rotates the in-process driving medium and is difficult to move in the pivot axial direction, and the position of driving medium in the pivot is accurate, can not cause the transmission to become invalid.

Description

Transmission mechanism

Technical Field

The utility model relates to a pretension equipment technical field especially relates to a drive mechanism.

Background

The preload piece is mainly used for providing preload force for parts, and the preload force is pre-applied before the parts are subjected to working load so as to enhance the reliability and tightness of connection and prevent gaps or relative slippage between the connecting pieces after the parts are subjected to the load.

Patent CN208578879U discloses a bearing pre-tightening mechanism of an electric spindle, when in use, when a rotor moves downward, a bearing seat moves downward along with the rotor, so that a pre-tightening spring is compressed, and meanwhile, an upward elastic thrust is applied to the bearing seat, and under the action of a bearing pressing sleeve, a reaction force is applied to the bearing seat, so that the bearing is pre-tightened; when the bearing rotates, a certain amount of heat is generated, the rotor generates a small expansion amount due to the action of expansion with heat and contraction with cold, and the bearing is always kept to operate in a pre-tightening state by virtue of the elastic force applied by the pre-tightening spring, so that the operation precision of the bearing is ensured, and the service life of the bearing is prolonged. Based on the above characteristics, make the utility model discloses can be when the bearing operation nimble provide the pretightning force, and then improve the rotation precision of main shaft and improve main shaft life.

However, above-mentioned mode mainly prevents that the bearing from removing, can not prevent that the driving medium from removing when the pivot transmission, when being equipped with the driving medium in the pivot, rotates the in-process driving medium and moves in pivot axial direction easily, leads to the driving medium position in the pivot inaccurate, causes the transmission inefficacy easily, for this reason, the utility model provides a drive mechanism.

SUMMERY OF THE UTILITY MODEL

The situation to prior art, the utility model provides a drive mechanism can effectively solve among the prior art and rotate the in-process driving medium and move in pivot axial direction easily, leads to the position of driving medium in the pivot inaccurate, causes the problem of transmission inefficacy easily.

The utility model discloses a following technical scheme realizes:

the utility model provides a transmission mechanism, include:

and (4) supporting the base.

The rotating shaft is rotatably arranged on the supporting seat.

The rotating sleeve is coaxially and fixedly sleeved on the rotating shaft.

The transmission piece is coaxially sleeved on the rotating sleeve.

The pre-tightening piece is arranged on the rotating shaft and used for driving the transmission piece to partially abut against one end face of the rotating sleeve.

Furthermore, the pretensioning part comprises a connecting piece arranged on the rotating shaft and an elastic piece arranged on the connecting piece, the elastic piece is coaxially sleeved on the rotating shaft, and one end, far away from the connecting piece, of the elastic piece is used for driving the transmission piece to be partially abutted against the end face of one end of the rotating sleeve.

Furthermore, the connecting piece is including the cover locate in the epaxial first supporting seat of pivot and set firmly in first butt seat on the first supporting seat, first butt seat is used for the butt the elastic component is close to the one end of first supporting seat.

Furthermore, the first supporting seat is in threaded connection with the rotating shaft.

Further, the elastic member is a spring.

Further, first butt joint seat includes first connecting plate and first joint portion, first connecting plate coaxial arrangement locate in the pivot and with first supporting seat fixed connection, first joint portion is located first connecting plate is close to the one end of elastic component, the lateral wall of first joint portion is formed with at least the part outward and cup joints the first joint space of spring.

Further, the first clamping portion comprises at least three first clamping pieces which are evenly distributed along the circumferential direction of the first connecting plate.

Furthermore, every first joint spare is in the radial direction of first connecting plate with first connecting plate slip joint.

Further, the butt end of elastic component with still be provided with second butt seat between the driving medium, second butt seat includes second connecting plate and second joint portion, the coaxial cover of second connecting plate is located in the pivot and with driving medium looks butt, second joint portion is located the second connecting plate is kept away from the one end of driving medium, the lateral wall of second joint portion is formed with at least the part outward and cup joints the second joint space of spring.

Furthermore, the second clamping portion comprises at least three second clamping pieces which are evenly distributed along the circumferential direction of the second connecting plate, and each second clamping piece is in sliding clamping connection with the second connecting plate in the radial direction of the second connecting plate.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

the utility model discloses a set up rotate cover, driving medium and pretension piece, because it locates to rotate the coaxial fixed cover of cover in the pivot, the coaxial cover of driving medium is located rotate to sheathe in, and pretension piece is located just can order about in the pivot driving medium part butt in rotate cover one end terminal surface, when being equipped with the driving medium in the pivot, via the driving medium with the butt that rotates the cover reaches the crimping effect of pretension piece rotates the in-process driving medium and is difficult to move in the pivot axial direction, and the position of driving medium in the pivot is accurate, can not cause the transmission to become invalid.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of a transmission mechanism provided in the present invention;

fig. 2 is a schematic top view of an embodiment of the transmission mechanism according to the present invention;

FIG. 3 is a first schematic cross-sectional view taken along the line A-A in FIG. 2;

FIG. 4 is a schematic view of a portion B of FIG. 3;

FIG. 5 is a second schematic cross-sectional view taken along the line A-A in FIG. 2;

FIG. 6 is a partially enlarged view of portion D of FIG. 5;

fig. 7 is a schematic perspective view of an embodiment of a partial structure of a transmission mechanism provided by the present invention;

FIG. 8 is a schematic front view of the structure shown in FIG. 7;

FIG. 9 is a schematic cross-sectional view taken along the line E-E in FIG. 8;

FIG. 10 is a schematic cross-sectional view taken along the direction F-F in FIG. 8;

fig. 11 is a schematic sectional view in the direction of G-G in fig. 8.

Reference numerals are as follows: 1. a supporting seat; 2. a rotating shaft; 3. rotating the sleeve; 4. a transmission member; 5. pre-tightening piece; 51. a connecting member; 511. a first support base; 512. a first abutting seat; 5121. a first connecting plate; 5122. a first clamping part; 52. an elastic member; 500. a first clamping space; 6. a second abutting seat; 61. a second connecting plate; 62. a second clamping part; 600. and a second clamping space.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part of this application and are used for illustration purposes and not for limitation of the invention.

As shown in fig. 1 to 11, a transmission mechanism includes:

a support seat 1.

The rotating shaft 2 is rotatably arranged on the supporting seat 1.

The rotating sleeve 3 is coaxially and fixedly sleeved on the rotating shaft 2.

The transmission piece 4 is coaxially sleeved on the rotating sleeve 3.

And the preload piece 5 is arranged on the rotating shaft 2 and is used for driving the transmission piece 4 to partially abut against one end face of the rotating sleeve 3.

The utility model provides a drive mechanism is in the use, because it locates to rotate 3 coaxial fixed covers of cover in the pivot 2 is last, 4 coaxial covers of driving medium are located rotate the cover 3 is last, and pretension piece 5 is located in the pivot 2 and can order about 4 partial butt of driving medium in rotate 3 one end terminal surfaces of cover, when being equipped with driving medium 4 in the pivot 2, via driving medium 4 with the butt that rotates cover 3 reaches pretension piece 5's crimping effect rotates in-process driving medium 4 and is difficult to move in 2 axial directions in the pivot, and driving medium 4 is accurate in the position in pivot 2, can not cause the transmission inefficacy.

In order to stably press the transmission member 4 on the rotating sleeve 3, the preload member 5 may be a rigid preload member 5 or an elastic preload member 5, and when the preload member 5 is the rigid preload member 5, the preload member 5 can stably press the transmission member 4 on the rotating sleeve 3; when the preload member 5 is an elastic preload member 5, such as a spring assembly, the preload member 5 can both stably press the transmission member 4 against the rotating sleeve 3 and also play a role of buffering, and therefore, in practical applications, the preload member 5 is preferably the elastic preload member 5. In practical application, the magnitude of the extrusion force provided by the preload piece 5 can be adjusted according to practical situations, so that the transmission piece 4 is stably pressed on the rotating sleeve 3.

In order to stably press the transmission member 4 onto the rotating sleeve 3 and facilitate adjustment of the pressing force of the preload member 5, the preload member 5 includes a connecting member 51 disposed on the rotating shaft 2 and an elastic member 52 disposed on the connecting member 51, the elastic member 52 is coaxially sleeved on the rotating shaft 2, and one end of the elastic member 52, which is away from the connecting member 51, is used for driving the transmission member 4 to partially abut against an end surface of one end of the rotating sleeve 3. The connecting member 51 includes a first supporting seat 5111 sleeved on the rotating shaft 2 and a first abutting seat 512 fixedly disposed on the first supporting seat 5111, and the first abutting seat 512 is used for abutting against one end of the elastic member 52 close to the first supporting seat 5111. The first supporting seat 5111 is in threaded connection with the rotating shaft 2. The elastic member 52 is a spring. The connecting piece 51 and the elastic piece 52 are arranged to stably press the transmission piece 4 on the rotating sleeve 3; and first support seat 5111 with 2 threaded connection of pivot, the accessible rotates first support seat 5111 is with the crimping the spring, for the regulation the extrusion force size of pretensioning piece 5, and the size of extrusion force is adjusted conveniently, in the practical application, works as first support seat 5111 is in after the position adjustment on the pivot 2 is good, fixed mode among the accessible prior art will first support seat 5111 with pivot 2 fixed connection, for example, connected modes such as bolted connection or welding.

In order to stably press the transmission member 4 onto the rotating sleeve 3, the first abutting seat 512 includes a first connecting plate 5121 and a first clamping portion 5122, the first connecting plate 5121 is coaxially sleeved on the rotating shaft 2 and is fixedly connected to the first supporting seat 5111, the first clamping portion 5122 is disposed at one end of the first connecting plate 5121 close to the elastic member 52, and a first clamping space 500 at least partially sleeved with the spring is formed outside a side wall of the first clamping portion 5122. The first catching portion 5122 includes at least three first catching pieces uniformly arranged along the circumferential direction of the first connecting plate 5121. Each of the first engaging members is slidably engaged with the first connecting plate 5121 in a radial direction of the first connecting plate 5121. In practical applications, for springs with different radial dimensions, when the radial dimension of the spring is larger than the diameter of the rotating shaft 2, the spring has a certain deformation space, so that the circumferential extrusion force provided to the transmission member 4 is easily uneven, and part of the structure of the transmission member 4 in the circumferential direction thereof is easily moved in the axial direction of the rotating shaft 2, so that the transmission member 4 cannot be stably pressed onto the rotating sleeve 3, whereas the first clamping space 500 at least partially sleeving the spring is formed outside the side wall of the first clamping portion 5122 by providing the first connecting plate 5121 and the first clamping portion 5122, and each first clamping member is slidably clamped with the first connecting plate 5121 in the radial direction of the first connecting plate 5121, so that part of the inner side space of the spring can be clamped, and the spring has almost no deformation space, so that the circumferential extrusion force provided to the transmission member 4 is even, the transmission piece 4 can be stably pressed on the rotating sleeve 3.

In order to incite somebody to action the stable crimping of driving medium 4 in on the cover 3 rotates, the butt end of elastic component 52 with still be provided with second butt seat 6 between the driving medium 4, second butt seat 6 includes second connecting plate 61 and second joint portion 62, second connecting plate 61 coaxial sleeve is located in pivot 2 and with driving medium 4 looks butt, second joint portion 62 is located second connecting plate 61 is kept away from the one end of driving medium 4, the lateral wall of second joint portion 62 is formed with at least partially outward and cup joints the second joint space 600 of spring. The second clamping portion 62 includes at least three second clamping members evenly arranged along the circumferential direction of the second connecting plate 61, and each second clamping member is in sliding clamping with the second connecting plate 61 in the radial direction of the second connecting plate 61. The theory of operation and the effect of second butt joint seat 6 are with the relevant description of last first butt joint seat 512, set up simultaneously first butt joint seat 512 and second butt joint seat 6, joint that can be more stable the partial inboard space of spring, the spring has almost no deformation space, consequently provides the circumference extrusion force of driving medium 4 is even, can with driving medium 4 stable crimping in on rotating cover 3.

Compared with the prior art, the utility model provides a drive mechanism has following beneficial effect:

the utility model discloses a set up rotate cover 3, driving medium 4 and pretension piece 5, because it locates to rotate the coaxial fixed cover of cover 3 in the pivot 2, 4 coaxial covers of driving medium are located rotate the cover 3 on, and pretension piece 5 is located in the pivot 2 and can order about 4 partial butt of driving medium in rotate 3 one end terminal surfaces of cover, when being equipped with driving medium 4 in the pivot 2, via driving medium 4 with the butt that rotates cover 3 reaches the crimping effect of pretension piece 5 rotates in-process driving medium 4 and is difficult to move in 2 axial directions in the pivot, and driving medium 4 is accurate in the position in pivot 2, can not cause the transmission to become invalid.

The above is only the preferred embodiment of the present invention, it is not right the limitation of the present invention in any form, all the basis the present invention discloses any simple modification, equivalent change of the technical entity to the above embodiments all fall into the protection scope of the present invention.

Claims (10)

1. A transmission mechanism, comprising:

a supporting seat;

the rotating shaft is rotatably arranged on the supporting seat;

the rotating sleeve is coaxially and fixedly sleeved on the rotating shaft;

the transmission piece is coaxially sleeved on the rotating sleeve;

the pre-tightening piece is arranged on the rotating shaft and used for driving the transmission piece to be partially abutted against one end face of the rotating sleeve.

2. The transmission mechanism according to claim 1, wherein the preload member includes a connecting member disposed on the rotating shaft and an elastic member disposed on the connecting member, the elastic member is coaxially sleeved on the rotating shaft, and an end of the elastic member away from the connecting member is used to drive the transmission member to partially abut against an end surface of an end of the rotating sleeve.

3. The transmission mechanism as claimed in claim 2, wherein the connecting member includes a first supporting seat sleeved on the rotating shaft and a first abutting seat fixed on the first supporting seat, and the first abutting seat is used for abutting against one end of the elastic member close to the first supporting seat.

4. The transmission mechanism as claimed in claim 3, wherein the first support base is threadedly coupled to the shaft.

5. The transmission mechanism as claimed in claim 4, wherein the resilient member is a spring.

6. The transmission mechanism according to claim 5, wherein the first abutting seat comprises a first connecting plate and a first clamping portion, the first connecting plate is coaxially sleeved on the rotating shaft and fixedly connected with the first supporting seat, the first clamping portion is arranged at one end, close to the elastic member, of the first connecting plate, and a first clamping space, at least part of which is sleeved with the spring, is formed outside a side wall of the first clamping portion.

7. The transmission mechanism as claimed in claim 6, wherein the first engaging portion includes at least three first engaging pieces uniformly arranged in a circumferential direction of the first link plate.

8. The transmission mechanism as claimed in claim 7, wherein each of the first engagement members is slidably engaged with the first link plate in a radial direction of the first link plate.

9. The transmission mechanism according to claim 8, wherein a second abutting seat is further disposed between the abutting end of the elastic member and the transmission member, the second abutting seat includes a second connecting plate and a second clamping portion, the second connecting plate is coaxially sleeved on the rotating shaft and abuts against the transmission member, the second clamping portion is disposed at an end of the second connecting plate away from the transmission member, and a second clamping space is formed outside a side wall of the second clamping portion and at least partially sleeves the spring.

10. The transmission mechanism according to claim 9, wherein the second engaging portion includes at least three second engaging members arranged uniformly in a circumferential direction of the second connecting plate, each of the second engaging members being slidably engaged with the second connecting plate in a radial direction of the second connecting plate.

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