CN210027380U

CN210027380U - New energy automobile and parking actuating mechanism thereof

Info

Publication number: CN210027380U
Application number: CN201920646783.9U
Authority: CN
Inventors: 周文峰; 唐伟鑫
Original assignee: Zhuzhou Gear Co Ltd
Current assignee: Zhuzhou Gear Co Ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-02-07
Anticipated expiration: 2029-05-07

Abstract

The utility model relates to a new energy automobile and parking actuating mechanism thereof. The parking actuating mechanism comprises a shell with an accommodating cavity, a parking transmission assembly and a plug. The side wall of the shell is provided with an unlocking through hole communicated with the accommodating cavity. The parking transmission assembly comprises a worm which is rotatably arranged in the shell in a penetrating mode. One end of the worm is positioned in the accommodating cavity and arranged towards the unlocking through hole. The worm extends along the central axis direction of the unlocking through hole. The plug detachably penetrates through the unlocking through hole and can seal the unlocking through hole. Therefore, due to the arrangement of the plug, the parking executing mechanism and the new energy automobile are enabled to have good sealing effect while the manual unlocking function of the parking executing mechanism is guaranteed.

Description

New energy automobile and parking actuating mechanism thereof

Technical Field

The utility model relates to a new energy automobile technical field especially relates to a new energy automobile and parking actuating mechanism thereof.

Background

The parking actuating mechanism is used for realizing the parking function of the whole vehicle and generally comprises a gear shifting motor and a worm and gear reduction transmission device. In general, the parking actuator is installed outside the reduction gearbox, so the requirements of the parking actuator on dust prevention and water prevention are high, and the protection grade of IP67 is generally required. At present, in order to prevent the situation that the parking cannot be unlocked due to unexpected failure of the P-gear and the like, a parking actuating mechanism is generally provided with a manual unlocking function.

However, when the parking actuator requires a manual unlocking function, the manual unlocking operation is usually performed from the end of the worm, so that one end of the worm is exposed out of the housing, which greatly affects the sealing effect of the parking actuator.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a new energy automobile and a parking actuator with better sealing effect to solve the problem of poor sealing effect of the conventional parking actuator.

A parking actuator, comprising:

the side wall of the shell is provided with an unlocking through hole communicated with the accommodating cavity;

the parking transmission assembly comprises a worm which is rotatably arranged in the shell in a penetrating mode, one end of the worm is located in the containing cavity and arranged towards the unlocking through hole, and the worm extends along the central axis direction of the unlocking through hole; and

and the plug is detachably arranged in the unlocking through hole in a penetrating way and can seal the unlocking through hole.

In one embodiment, the plug includes an end cap and a connecting rod fixed to the end cap, the extending direction of the connecting rod is the same as the direction of the central axis of the end cap, the connecting rod can penetrate through and be sealed in the unlocking through hole, and one side of the end cap, which is provided with the connecting rod, can be abutted against the outer wall of the shell.

In one embodiment, the connecting rod further comprises an annular sealing element, wherein the annular sealing element is arranged along the circumferential direction of the connecting rod and can be clamped between the outer wall of the shell and the end cover.

In one embodiment, a groove arranged along the circumferential direction of the connecting rod is formed in the surface of the end cover facing the worm, and the annular sealing element is installed in the groove and is in interference fit with the groove.

In one embodiment, the annular seal is an O-ring.

In one embodiment, the end surface of the worm facing to one end of the unlocking through hole is provided with an unlocking groove.

In one embodiment, the locking device further comprises a supporting sleeve, wherein the supporting sleeve is rotatably sleeved at one end of the worm, close to the unlocking through hole, and is fixedly connected with the inner wall of the shell.

In one embodiment, the parking device further comprises a parking motor with a motor shaft, and the motor shaft is in transmission connection with one end, away from the unlocking through hole, of the worm.

In one embodiment, the parking transmission assembly further comprises a worm wheel accommodated and mounted in the accommodating cavity, and the worm wheel is meshed with the worm.

The new energy automobile is characterized by comprising a parking execution structure.

According to the new energy automobile and the parking execution mechanism thereof, when manual unlocking is needed, the plug is required to be detached from the unlocking through hole, and an operator rotates the worm through tools such as a screwdriver penetrating through the unlocking through hole, so that the manual unlocking function of the parking execution mechanism is realized; after manual unlocking is completed or in the conventional use process, the plug is installed on the unlocking through hole and seals the unlocking through hole, so that the condition that oil in the shell is leaked is avoided. Therefore, due to the arrangement of the plug, the parking executing mechanism and the new energy automobile are enabled to have good sealing effect while the manual unlocking function of the parking executing mechanism is guaranteed.

Drawings

Fig. 1 is a schematic structural view of a parking actuator according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of a housing of the parking actuator of FIG. 1;

fig. 3 is a schematic structural view of a plug of the parking actuator shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the present invention provides a new energy vehicle (not shown) and a parking actuator 100 thereof. The new energy automobile comprises a parking actuating mechanism 100. The most commonly used new energy automobile is an electric automobile. For convenience of use, the parking actuator 100 is generally used in an electric vehicle to implement parking lock and parking unlock functions.

The parking actuator 100 of the preferred embodiment of the present invention includes a housing 110, a parking transmission assembly 120 and a plug 130.

Referring to fig. 2, the housing 110 has a receiving cavity 111. The side wall of the housing 110 is opened with an unlocking through hole 112 communicating with the receiving cavity 111. The housing 110 mainly functions as a support and a fixing. Generally, the housing 110 is made of a metal material with high strength, such as stainless steel, cast steel, alloy steel, cast iron, and aluminum alloy, so that the housing 110 has a high bearing capacity.

The parking transmission assembly 120 includes a worm 121 rotatably disposed through the housing 110. One end of the worm 121 is located in the receiving cavity 111 and disposed toward the unlocking through-hole 112. The worm 121 extends in the direction of the central axis of the unlocking through-hole 112. The worm 121 is an important component of the parking transmission assembly 120, and when the worm 121 rotates in a forward direction, the parking lock function of the parking actuator 100 may be implemented, and when the worm 121 rotates in a reverse direction, the parking unlock function of the parking actuator 100 may be implemented.

In the present embodiment, the parking transmission assembly 120 further includes a worm gear 122 received and mounted in the receiving cavity 111. The worm wheel 122 is engaged with the worm 121. Thus, in the parking actuator 100, the worm wheel 122 and the worm 121 mesh with each other to transmit the kinetic energy from the worm 131 to the worm wheel 132, so the worm wheel and the worm 121 mesh with each other to transmit the kinetic energy, reduce the rotation speed, and increase the output torque.

The plug 130 is detachably disposed through the unlocking through hole 112 and can seal the unlocking through hole 112. Thus, the plug 130 primarily functions as a seal.

The plug 130 is a sealing fastener and cooperates with the unlocking through-hole 112 such that the state of the unlocking through-hole 112 includes both closed and open states. In the using process, for some reasons, when the new energy automobile in the parking locking state needs to be manually unlocked, the plug 130 can be detached from the unlocking through hole 112, so that an operator can conveniently manually operate the worm 121 through the unlocking through hole 112; after the new energy automobile is manually unlocked or in the conventional use process, the plug 130 is matched with the unlocking through hole 112, so that the unlocking through hole 112 is in a closed state, and the situation that oil in the shell 110 leaks out through the unlocking through hole 112 to further pollute the new energy automobile is avoided.

Therefore, the plug 130 effectively improves the sealing effect of the parking actuating mechanism 100 while ensuring that the parking actuating mechanism 100 realizes the manual unlocking function.

In this embodiment, the plug 130 is threadedly coupled to the unlocking through-hole 112. Thus, during use, the plug 130 can be attached to and detached from the unlocking through-hole 112 by screwing the plug 130 manually or by another tool or the like. Therefore, the unlocking through hole 112 is set to be a threaded hole, so that the plug 130 is more convenient to disassemble and assemble.

Referring to fig. 3, in the present embodiment, the plug 130 includes an end cap 131 and a connecting rod 132 fixed to the end cap 131. The connecting rod 132 extends in the same direction as the central axis of the end cap 131. The connecting rod 132 may be inserted through and sealed to the unlocking through-hole 112. The end cap 131 is supported by the outer wall of the housing 110 at a side thereof provided with the connecting rod 132. Therefore, when the plug 130 is mounted in the unlocking through hole 112, the outer surface of the connecting rod 132 contacts with the wall of the unlocking through hole 112 to seal the unlocking through hole 112, and further, the end cap 131 abutting against the outer wall of the housing 110 plays a role of further sealing the unlocking through hole 112. Therefore, the plug 130 is provided with the connecting rod 132 and the end cap 131, and the sealing effect of the parking actuator 100 is further improved.

In order to facilitate the assembling and disassembling of the plug 130 by a tool such as a wrench, the edge of the radial cross section of the end cap 131 is hexagonal, and/or a hexagonal groove is formed on the surface of the end cap 131 facing away from the connecting rod 132.

Further, in the present embodiment, the parking actuator 100 further includes an annular seal 140. The annular seal 140 is disposed along a circumferential direction of the connecting rod 132 and may be clamped between an outer wall of the housing 110 and the end cap 131. When the plug 130 is mounted and sealed in the unlocking through hole 112, the annular sealing member 140 is clamped between the outer wall of the housing 110 and the end cap 131 to seal the end cap 131 and the outer wall of the housing 110, thereby further improving the sealing effect of the parking actuator 100. The radial cross-sectional shape of the ring seal 140 may be circular, rectangular, etc. Further, the annular sealing element 140 may be an O-ring, a packing, or other sealing elements.

Further, in this embodiment, the annular seal 140 is an O-ring. The O-shaped ring is also called an O-shaped sealing ring, and is a rubber sealing ring with a circular radial section. Due to the fact that the O-shaped ring has excellent sealing performance and high abrasion resistance, the sealing effect of the annular sealing element 140 on the contact position of the outer wall of the shell 110 and the end cover 131 is better. The high wear resistance of the O-ring, in turn, allows for a longer service life of the ring seal 140. The O-ring has the characteristics of simple structure and convenience in installation, so that the installation of the annular sealing element 140, the plug 130 and the shell 110 is simpler and more convenient.

Further, in the present embodiment, a surface of the end cap 131 facing the worm 121 is formed with a groove 1311 disposed along a circumferential direction of the connecting rod 132. The ring seal 140 is mounted to the groove 1311 and is an interference fit with the groove 1311.

The ring seal 140 is mounted in the groove 1311 to fix the ring seal 140 to the end cap 131, preventing the ring seal 140 from sliding on the outer surface of the housing 110, effectively providing a sealing effect of the ring seal 140 between the end cap 131 and the housing 110. Moreover, the annular sealing element 140 is in interference fit with the groove 1311, so that the sealing effect between the end cover 131 and the housing 110 is further improved, and the sealing effect between the annular sealing element 140 and the end cover 131 is better.

Further, in the present embodiment, the groove 1311 is a rectangular groove. The machining of the groove 1311 on the surface of the end cover 131 facing the housing 110 is made easier due to the simple machining process of the rectangular groove.

Referring to fig. 1 again, in the present embodiment, an end surface of the worm 121 facing to one end of the unlocking through hole 112 is provided with an unlocking groove 1211. The unlocking slot 1211 is used to cooperate with a tool such as a driver to facilitate manual unlocking operation. Therefore, the provision of the unlocking groove 1211 makes the operation of manually unlocking the parking actuator 100 more convenient. The unlocking groove 1211 may be a cross groove, a straight groove, etc. Specifically, in the present embodiment, the unlocking groove 1211 is a linear groove.

In the present embodiment, the parking actuator 100 further includes a parking motor (not shown) having a motor shaft (not shown). The motor shaft is in transmission connection with one end of the worm 121 far away from the unlocking through hole 112. Thus, the parking motor provides kinetic energy to the worm gear 121 to drive the worm gear 121 to rotate in a forward or reverse direction. Therefore, the parking motor is provided, so that the parking and unlocking of the parking actuator 100 can be automated, and the operation of the parking actuator 100 is simplified.

In the present embodiment, the parking actuator 100 further includes a support sleeve 150. The supporting sleeve 150 is rotatably sleeved on one end of the worm 121 close to the unlocking through hole 112 and is fixedly connected with the inner wall of the housing 110. Accordingly, the support sleeve 150 is provided to prevent the worm 121 from shaking in the housing 110, so that the parking actuator 100 can be operated more smoothly.

In addition, since the worm 121 rotates at a high speed with respect to the support sleeve 150, the frictional property required for the material of the support sleeve 150 is high. Therefore, the support sleeve 150 is generally made of a material having wear reducing characteristics, such as white alloy, wear resistant cast iron, copper-based alloy, aluminum-based alloy, and the like. In the present embodiment, the supporting sleeve 150 is a copper sleeve, which mainly plays a role of reducing wear. Therefore, the friction between the worm 121 and the housing 110 is effectively reduced by the support sleeve 150, so that the work of the worm 121 and the parking actuator 100 is smoother and the service life is longer.

To improve the frictional properties of the surface of the support sleeve 150, the inner surface of the wear reducing sleeve is provided with an inner lining (not shown) in the present embodiment. Specifically, the lining is a layer of antifriction material poured on the inner surface of the antifriction sleeve. The lining is made of soft steel, bronze and other materials with good antifriction property. Therefore, the lining can effectively improve the friction performance of the inner surface of the antifriction sleeve, further prolong the service life of the worm 121 and enable the parking actuator 100 to work more stably and reliably.

When the new energy automobile and the parking execution mechanism 100 thereof need to be manually unlocked, the plug 130 needs to be detached from the unlocking through hole 112, and an operator rotates the worm 121 through tools such as a screwdriver penetrating through the unlocking through hole 112, so as to realize the manual unlocking function of the parking execution mechanism 100; after the manual unlocking is completed or during the normal use process, the plug 130 is installed on the unlocking through hole 112 and seals the unlocking through hole 112, so as to prevent the oil in the housing 110 from leaking. Therefore, due to the arrangement of the plug 130, the parking executing mechanism 100 and the new energy automobile have good sealing effects while the manual unlocking function of the parking executing mechanism 100 is ensured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A parking actuator, comprising:

2. The parking actuating mechanism according to claim 1, wherein the plug includes an end cap and a connecting rod fixed to the end cap, an extending direction of the connecting rod is identical to a direction of a central axis of the end cap, the connecting rod can penetrate through and is sealed in the unlocking through hole, and one side of the end cap, on which the connecting rod is disposed, can abut against an outer wall of the housing.

3. The parking actuator of claim 2, further comprising an annular seal disposed circumferentially of the connecting rod and clampable between an outer wall of the housing and the end cap.

4. The parking actuator according to claim 3, wherein a surface of the end cap facing the worm is provided with a groove arranged along a circumferential direction of the connecting rod, and the annular sealing member is mounted in the groove and is in interference fit with the groove.

5. The parking actuator of claim 3, wherein the annular seal is an O-ring.

6. The parking actuator of claim 1, wherein an end surface of the worm facing one end of the unlocking through hole is provided with an unlocking groove.

7. The parking actuator according to claim 1, further comprising a support sleeve rotatably sleeved on an end of the worm near the unlocking through hole and fixedly connected with an inner wall of the housing.

8. The parking actuator of claim 1, further comprising a parking motor having a motor shaft drivingly connected to an end of the worm remote from the unlocking through-hole.

9. The parking actuator of claim 1, wherein the parking transmission assembly further comprises a worm gear received and mounted in the receiving cavity, the worm gear engaging the worm.

10. A new energy automobile, characterized by comprising the parking execution structure according to any one of claims 1 to 9.