CN212616250U - Gearbox executor - Google Patents

Abstract

The utility model provides a gearbox actuator, which comprises a driving motor, a gearbox connecting shaft and a transmission mechanism used for transmitting power from the driving motor to the gearbox connecting shaft, wherein the transmission mechanism comprises a tooth transmission assembly, the tooth transmission assembly comprises a transmission connecting shaft, and a plurality of convex teeth are arranged around the outer edge of the transmission connecting shaft; the transmission mechanism comprises a toothed plate, a plurality of convex teeth, a buffer structure, a transmission connecting shaft and a driving motor, wherein one side edge of the toothed plate is provided with the transmission teeth, the end surface of the toothed plate is provided with a connecting seat, the connecting seat is provided with a through cavity into which a transmission connecting shaft can be inserted, the through cavity is provided with a plurality of grooves for placing and driving the convex teeth, the buffer structure is arranged between the grooves and the convex teeth, the transmission connecting shaft is coupled with; the utility model discloses in, in driving motor output power transmits the transmission route to the gearbox connecting axle, dogtooth, groove structure provide certain clearance and buffering under the prerequisite that can transmit power, satisfy each gear of gearbox 1Nm from the return demand, and can effectual reduction action noise.

Description

Gearbox executor

Technical Field

The utility model relates to a gearbox technical field especially relates to a gearbox executor.

Background

The actuator is a mechanical-electronic integrated mechanism device, is applied to a vehicle which has higher requirement on perceived quality and integrates an electronic gear shifting control device, is used for controlling an automatic gearbox to switch gears, and outputs forward rotation or reverse rotation to drive the gears of the gearbox to return in the process of self-returning of each gear of the gearbox.

In the prior art, in order to compromise the return needs of two positive and negative rotation directions, the gearbox executor generally comparatively adopts push rod executor, and push rod executor's overall dimension is big, occupation space is big to vibrate great and produce comparatively sharp-pointed action noise, influence user's driving experience easily. With the precision of the vehicle transmission changing, the demand for external matching parts is becoming more and more severe, and the existing transmission actuator with sharp motion noise cannot meet the demand of users.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gearbox executor to there is the big technical problem of noise of action in the executor among the solution prior art.

In order to solve the above problem, the utility model adopts the following technical scheme:

there is provided a gearbox actuator comprising a drive motor, a gearbox connecting shaft and a transmission for transmitting power from the drive motor to the gearbox connecting shaft, the transmission comprising a tooth drive assembly comprising:

the outer edge of the transmission connecting shaft is provided with a plurality of convex teeth in a surrounding manner;

the tooth-shaped plate is provided with transmission teeth on one side edge and a connecting seat on the end face, the connecting seat is provided with a through cavity into which the transmission connecting shaft can be inserted, the through cavity is provided with a plurality of grooves into which the convex teeth can be placed and transmitted, and a buffer structure is arranged between the grooves and the convex teeth;

the transmission connecting shaft is coupled with the gearbox connecting shaft, and the toothed plate is coupled with the driving motor.

Further, the transmission connecting shaft is fixed in gearbox connecting shaft tip, drive mechanism still includes: the transmission shaft is provided with a worm gear and a cylindrical gear, and the cylindrical gear is meshed with the transmission teeth of the toothed plate; and the worm is arranged at the output end of the driving motor and meshed with the worm wheel.

Further, the tooth-shaped plate comprises an arc-shaped side edge, the arc-shaped side edge is provided with the transmission teeth, and the connecting seat is located at one end, far away from the arc-shaped side edge, of the tooth-shaped plate.

Furthermore, the number of the convex teeth is three, the convex teeth are evenly distributed along the axis of the transmission connecting shaft, and the number and the distribution mode of the grooves correspond to the convex teeth.

Further, the buffer structure is an elastic pad.

Further, the elastic cushion is an integrated annular structure attached to the inner wall of the through cavity.

Further, still include the motor support, driving motor transversely puts and is fixed in the motor support, the transmission shaft is indulged to be put install in the motor support, driving motor's pivot axis with the axis mutually perpendicular of transmission shaft.

The gear type gear box further comprises a lower shell and an upper shell, wherein the lower shell is provided with a first concave cavity and a second concave cavity, the first concave cavity can be used for enabling the gear type plate to swing in an embedded mode, the second concave cavity can be used for enabling the cylindrical gear to rotate in an embedded mode, and the first concave cavity is communicated with the second concave cavity.

Furthermore, the motor support is mounted on the lower shell, a first through hole is formed in the upper end of the transmission connecting shaft, and a second through hole is formed in the upper end of the second cavity; and a magnet penetrating through the first through hole is arranged at the upper end of the transmission connecting shaft, and a Hall sensor assembly is arranged on the motor support adjacent to the first through hole.

Furthermore, the transmission connecting shaft comprises a connecting section and a transmission section, the connecting section can be used for inserting and fixing the transmission connecting shaft, the transmission section is used for arranging the convex teeth, the through cavity comprises a lower cavity body and an upper cavity body, the lower cavity body can be used for allowing the connecting section to penetrate through, the upper cavity body can be used for allowing the transmission section to be placed into, and the outer diameter of the transmission section is larger than the inner diameter of the lower cavity body.

The utility model provides a braking return means's beneficial effect lies in:

a gearbox actuator comprises a driving motor, a gearbox connecting shaft and a transmission mechanism used for transmitting power from the driving motor to the gearbox connecting shaft, wherein the transmission mechanism comprises a tooth transmission assembly, the tooth transmission assembly comprises a transmission connecting shaft, and a plurality of convex teeth are arranged on the outer edge of the transmission connecting shaft in a surrounding manner; the transmission mechanism comprises a toothed plate, a transmission connecting shaft, a plurality of convex teeth, a buffer structure, a transmission connecting shaft and a driving motor, wherein one side edge of the toothed plate is provided with the transmission teeth, the end surface of the toothed plate is provided with a connecting seat, the connecting seat is provided with a through cavity into which the transmission connecting shaft can be inserted, the through cavity is provided with a plurality of grooves for placing and driving the convex teeth, the buffer structure is arranged between the grooves and the convex teeth, the transmission connecting shaft; the utility model discloses in, in the transmission route of driving motor output power transmission to gearbox connecting axle, tooth drive assembly's dogtooth, groove structure provide certain clearance and buffering under the prerequisite that can transmit power, satisfy each gear of gearbox 1Nm from the return demand, because be equipped with buffer structure between dogtooth and the groove structure, can effectual reduction action noise.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic view of an overall structure of a transmission actuator according to an embodiment of the present invention;

fig. 2 is an exploded view of a transmission actuator according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a transmission actuator according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a transmission mechanism according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a gear assembly according to an embodiment of the present invention;

fig. 6 is an exploded view of the gear assembly according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a gearbox actuator;

11-a drive motor;

12-a transmission mechanism; 121-tooth drive assembly; 1211-drive connection shaft; 12111-the transmission section; 12112-connecting segment; 1212-lobes; 1213-castellated plate; 1214-driving teeth; 1215-a connecting seat; 1216-through lumen; 12161-upper cavity; 12162-lower cavity; 1217-grooves; 1218-buffer structure; 1219-Magnetitum; 122-a drive shaft; 1221-a worm gear; 1222-cylindrical gear; 123-worm;

13-a motor support; 131-a first via; 132-a second via; 133-hall sensor assembly;

141-an upper shell; 142-a lower housing; 1421 — first cavity; 1422 — second cavity;

15-gearbox connecting shaft.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 6, an embodiment of the present invention provides a transmission actuator 1, which specifically includes a driving motor 11, a transmission mechanism 12 and a transmission connecting shaft 15, wherein the driving motor 11 is used for outputting power, the transmission mechanism 12 is coupled to the driving motor 11 and the transmission connecting shaft 15 at the same time, and is used for transmitting power from the driving motor 11 to the transmission connecting shaft 15, and the transmission connecting shaft 15 is connected to a transmission.

The transmission mechanism 12 includes a gear transmission assembly 121, and the gear transmission assembly 121 specifically includes: the transmission connecting shaft 1211 is coupled to the gearbox connecting shaft 15, and the toothed plate 1213 is coupled to the driving motor 11, wherein a plurality of convex teeth 1212 are circumferentially arranged on the outer edge of the transmission connecting shaft 1211; one side of the toothed plate 1213 is provided with a driving tooth 1214, and the end face of the toothed plate 1213 is provided with a connecting seat 1215. The connecting seat 1215 is provided with a through cavity 1216, the inner wall of the through cavity 1216 is provided with a plurality of grooves 1217, after the transmission connecting shaft 1211 is inserted into the through cavity 1216 of the connecting seat 1215, each convex tooth 1212 is correspondingly arranged in the groove 1217, and the convex teeth 1212 are positioned in the grooves 1217 to realize power transmission. A cushioning structure 1218 is also provided between the groove 1217 and the tooth 1212. Wherein, the transmission connecting shaft 1211 is a quincunx connecting shaft.

The toothed plate 1213 can be coupled with the external gear, gear disc, rack and other structures through the transmission teeth 1214 arranged on one side of the toothed plate 1213 for transmission, after the power is transmitted to the toothed plate 1213, the toothed plate 1213 swings with the connecting seat 1215 as an axis, and the power transmission is realized by the contact and matching of the groove 1217 and the convex teeth 1212, so as to drive the transmission connecting shaft 1211 to rotate. Otherwise, the same descriptions are omitted here.

Because the dogtooth 1212 lies in recess 1217, and be equipped with buffer structure 1218 between dogtooth 1212 and the recess 1217, the size of recess 1217 must be greater than dogtooth 1212, in the relative positive and negative two direction rotations of castellated plate 1213 of transmission connecting axle 1211, through clearance and buffer structure 1218 cooperation between transmission tooth 1214 and the recess 1217, under the prerequisite that satisfies 1Nm each gear of gearbox from the return demand, the action noise has been reduced, and along a plurality of dogteeth 1212 that set up of transmission connecting axle 1211 outer edge with the power dispersion transmission, further reduce colliding with of rigid contact in the corotation reversal in-process, finally make the gearbox return more smooth and easy, user's driving experience has been improved.

It will be appreciated that the other components of the transmission 12 can be coupled to the gear assembly 121 by a variety of structures, such as a gear set, a pulley, a rack, a toothed disc, etc.

In one embodiment, the transmission connecting shaft 1211 is fixed to an end of the transmission connecting shaft 15, and the toothed plate 1213 is coupled to an output end of the driving motor 11. While the coupling object of the transmission connecting shaft 1211 and the toothed plate 1213 of the tooth transmission assembly 121 in the transmission mechanism 12 is not fixed, in other embodiments, the transmission mechanism 12 includes a reduction gear set disposed on the output shaft of the driving motor 11 and a gear on the transmission connecting shaft 15, the reduction gear set is coupled with the transmission connecting shaft 1211, and the gear is engaged with the side edge of the toothed plate 1213, so as to finally realize power transmission.

In one embodiment, referring to fig. 2 to 5, the transmission mechanism 12 further includes a transmission shaft 122 and a worm 123. The transmission shaft 122 is provided with a worm gear 1221 and a cylindrical gear 1222, which rotate synchronously with the transmission shaft 122. The worm 123 is connected to the output end of the driving motor 11 and engaged with the worm wheel 1221, and the cylindrical gear 1222 is engaged with the driving teeth 1214 of the toothed plate 1213. The driving motor 11 and the transmission shaft 122 form primary transmission through a worm gear 1221 and worm 123 structure, the transmission shaft 122 and the transmission connecting shaft 1211 form secondary transmission through the cylindrical gear 1222 and the toothed plate 1213, and finally, power output by the driving motor 11 is transmitted to the transmission connecting shaft 15 after the two-stage transmission. In other embodiments, other transmission forms of the transmission mechanism 12 may be adopted, for example, a reduction gear set is provided at the output end of the driving motor 11, the output gear is directly meshed with the side edge of the toothed plate 1213, and the like.

In one embodiment, referring to fig. 5, the toothed plate 1213 includes an arc-shaped side, the transmission teeth 1214 are disposed on the arc-shaped side, and the connecting seat 1215 is located at an end of the toothed plate 1213 away from the arc-shaped side, so as to maximize the transmission torque in the radial direction of the arc-shaped side. In order to ensure the smooth transmission, the axis of the transmission connecting shaft 1211 should coincide with the rotation axis of the oscillating toothed plate 1213, i.e. the axis of the arc-shaped side, the axis of the through cavity, and the axis of the transmission connecting shaft 1211 all coincide.

In one embodiment, referring to fig. 5 and 6, three teeth 1212 are disposed along the outer edge of the driving connection shaft 1211 and are uniformly distributed along the axis thereof, and the number and distribution of the grooves 1217 correspond thereto. In other embodiments, the number of teeth 1212 and grooves 1217 may be two, four, five, or other numbers.

The buffering structure 1218 in this embodiment is an elastic cushion 1218, and the cushion is achieved by self-deformation after being squeezed. In other embodiments, the buffer structure 1218 may also be a spring, a spring plate, or the like. The resilient pad 1218 is an integral ring-shaped structure that fits against the inner wall of the through cavity 1216, as shown in fig. 6, and has a cross-sectional shape perpendicular to the axis that is substantially the same as the shape of the inner wall of the through cavity 1216, and is fitted over the outside of the transmission connection shaft 1211 during installation.

In an embodiment, referring to fig. 1 to 3, the gearbox actuator 1 further includes a motor bracket 13, the driving motor 11 is fixed to the motor bracket 13 in a horizontal manner, the transmission shaft 122 is installed in the motor bracket 13 in a vertical manner, and an axis of a rotating shaft of the driving motor 11 is perpendicular to an axis of the transmission shaft 122. Because the axis of the transmission shaft 122 is perpendicular to the axis of the driving motor 11, the whole gearbox actuator 1 is a vertical type clasping actuator, the axial length of the whole gearbox actuator is reduced, the whole structure is more compact, the size is reduced, and the structural design and the light weight in the vehicle body are more facilitated.

In one embodiment, referring to fig. 2 and 3, the transmission actuator 1 further includes a lower housing 142 and an upper housing 141, and the above structures are all installed in a cavity enclosed by the lower housing 142 and the upper housing 141. The lower housing 142 is provided with a first cavity 1421 for the toothed plate 1213 to swing in and a second cavity 1422 for the cylindrical gear 1222 to rotate, the first cavity 1421 is communicated with the second cavity 1422, namely, the engagement position of the toothed plate 1213 and the cylindrical gear 1222.

In one embodiment, referring to fig. 2 and 3, the motor bracket 13 is mounted to the lower housing 142 and is sealed above the first cavity 1421 and the second cavity 1422. The motor bracket 13 is provided with a first through hole 131 and a second through hole 132, wherein the first through hole 131 is disposed at the upper end of the transmission connecting shaft 1211, and the second through hole 132 corresponds to the upper end of the second cavity 1422. The upper end of the transmission connecting shaft 1211 is provided with a magnet 1219 penetrating through the first through hole 131, the motor bracket 13 is provided with a hall sensor assembly 133 adjacent to the first through hole 131, and the position information can be detected by detecting the rotation angle of the magnet 1219, so that the rotation direction and the angle information of the transmission connecting shaft 15 can be acquired.

In one embodiment, referring to fig. 3, 5 and 6, the transmission connecting shaft 1211 includes two sections: a connecting section 12112 for inserting and fixing the transmission connecting shaft 15 and a transmission section 12111 for arranging the convex teeth 1212; the through cavity 1216 correspondingly includes two portions: a lower cavity 12162 for the passage of the connecting section 12112 and an upper cavity 12161 for the insertion of the driving section 12111. The inner diameter of the upper cavity 12161 is larger than the outer diameter of the drive section 12111, the outer diameter of the drive section 12111 is larger than the inner diameter of the lower cavity 12162, and the inner diameter of the lower cavity 12162 is larger than the outer diameter of the connecting section 12112. In other words, the lower end surface of the upper cavity 12161 is provided with the lower cavity 12162, the lower end surface is annular, and after the transmission section 12111 is placed in the upper cavity 12161, the lower end surface is tightly attached to the annular lower end surface of the upper cavity 12161 to form surface contact. The above dimensional relationship enables the connecting section 12112 to rotate freely in the lower cavity 12162, the transmission section 12111 to rotate in the upper cavity 12161, and the transmission section 12111 cannot enter the lower cavity 12162, so as to prevent the transmission connecting shaft 1211 from falling off from the tooth plate 1213 in the direction of the figure, thereby limiting the position of the transmission connecting shaft 1211.

A gearbox executor 1's theory of operation: when the gearbox needs to return, the driving motor 11 outputs a positive rotating force or a reverse rotating force according to the control signal to drive the worm 123 to rotate, and the worm 123 drives the turbine 1221 to rotate after rotating, so that the torque is vertically twisted and primary transmission is completed. The worm gear 1221 rotates to drive the transmission shaft 122 to rotate, the cylindrical gear 1222 rotates synchronously with the transmission shaft 122, and the cylindrical gear 1222 is engaged with the toothed plate 1213 to drive the toothed plate to swing. In the swinging process of the toothed plate 1213, the groove 1217 and the bump 1217 on the connecting seat 1215 are contacted to realize transmission, the power is transmitted to the transmission connecting shaft 1211 to complete secondary transmission, the transmission connecting shaft 1211 is connected to the gearbox connecting shaft 15, and finally the power is transmitted to the gearbox to realize return. In the transmission process, because the tooth transmission assembly 121 with the special structure is arranged, the grooves 1217 and the convex blocks 1217 of each group are matched with each other through gaps and buffer pads 1218, the return requirement of the gearbox can be met in the forward rotation and reverse rotation processes, the action noise is reduced, the gearbox is smoother, and the driving experience of a user is improved.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A gearbox actuator comprising a drive motor, a gearbox connecting shaft and a transmission for transferring power from the drive motor to the gearbox connecting shaft, the transmission comprising a gear assembly comprising:

the outer edge of the transmission connecting shaft is provided with a plurality of convex teeth in a surrounding manner;

the tooth-shaped plate is provided with transmission teeth on one side edge and a connecting seat on the end face, the connecting seat is provided with a through cavity into which the transmission connecting shaft can be inserted, the through cavity is provided with a plurality of grooves into which the convex teeth can be placed and transmitted, and a buffer structure is arranged between the grooves and the convex teeth;

the transmission connecting shaft is coupled with the gearbox connecting shaft, and the toothed plate is coupled with the driving motor.

2. The transmission actuator of claim 1 wherein the transmission interface shaft is secured to an end of the transmission interface shaft, the transmission mechanism further comprising:

the transmission shaft is provided with a worm gear and a cylindrical gear, and the cylindrical gear is meshed with the transmission teeth of the toothed plate;

and the worm is arranged at the output end of the driving motor and meshed with the worm wheel.

3. The transmission actuator of claim 1 wherein said toothed plate includes arcuate sides, said arcuate sides having said drive teeth, said connecting seat being located at an end of said toothed plate remote from said arcuate sides.

4. The transmission actuator of claim 1 wherein said lobes are three in number and are evenly distributed along the axis of the drive connection shaft, and said grooves are in a number and distribution corresponding to said lobes.

5. The gearbox actuator of claim 1, wherein the cushion structure is an elastomeric pad.

6. The transmission actuator of claim 5 wherein the resilient pad is a one-piece annular structure that conforms to the inner wall of the through cavity.

7. The transmission actuator of claim 2 further comprising a motor bracket, wherein the drive motor is transversely fixed to the motor bracket, wherein the drive shaft is longitudinally mounted to the motor bracket, and wherein the axis of the drive motor shaft is perpendicular to the axis of the drive shaft.

8. The transmission actuator of claim 7 further comprising a lower housing and an upper housing, the lower housing defining a first cavity into which the toothed plate is received and oscillated and a second cavity into which the cylindrical gear is received and rotated, the first cavity communicating with the second cavity.

9. The transmission actuator of claim 8 wherein said motor bracket is mounted to said lower housing, said drive connection shaft having a first through hole at an upper end thereof, said second cavity having a second through hole at an upper end thereof; and a magnet penetrating through the first through hole is arranged at the upper end of the transmission connecting shaft, and a Hall sensor assembly is arranged on the motor support adjacent to the first through hole.

10. The gearbox actuator according to any of claims 1 to 9, wherein the transmission connecting shaft comprises a connecting section for inserting and fixing the gearbox connecting shaft and a transmission section for arranging the protruding teeth, the through cavity comprises a lower cavity for the connecting section to pass through and an upper cavity for the transmission section to be arranged in, and the outer diameter of the transmission section is larger than the inner diameter of the lower cavity.

Images