CN216045395U

CN216045395U - Parking mechanism capable of emergently outputting P gear

Info

Publication number: CN216045395U
Application number: CN202121624446.3U
Authority: CN
Inventors: 常亮; 吴飞; 孙家宦
Original assignee: Dongfeng Dingxin Power System Technology Co ltd
Current assignee: Zhixin Technology Co Ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-03-15
Anticipated expiration: 2031-07-16

Abstract

The utility model discloses a parking mechanism capable of emergently coming out of a P gear, which relates to the technical field of parking unlocking and comprises: the driving plate is provided with a limiting port and is connected with the transmission mechanism; the parking device can enable the automobile to enter a P gear or exit the P gear; the electronic driving device is connected with a connecting pin penetrating through the limiting port, and the connecting pin can be used for being matched with the parking device to enable the automobile to enter a P gear or exit the P gear; the limiting opening can be driven by the transmission mechanism to be matched with the connecting pin to enable the automobile to go out of the P gear. The electronic parking device has the advantages that the driving plate and the transmission mechanism are additionally arranged on the electronic parking mechanism, so that the emergency unlocking function is realized while the electronic parking is not influenced by a simplified design.

Description

Parking mechanism capable of emergently outputting P gear

Technical Field

The utility model belongs to the field of automobile gearboxes of electronic parking mechanisms, and particularly relates to a parking mechanism for emergent P gear exit.

Background

In the field of automobiles, with the increasing proportion of automobiles with automatic gears and the development of science and technology, the electronic gear shifter and the gear box are used more and more widely in the automobiles with automatic gears, and a problem that the traditional mechanical gear shifter and the gear box never appear before is also generated along with the electronic gear shifter and the gear box: when the automobile is in traffic accident power failure or faults of an engine, a gearbox and the like occur, an electronic control unit of the automobile can automatically identify the faults and switch the gear of the gearbox to a parking gear (P gear) so as to ensure the safety of the automobile. Therefore, the gearbox of the automobile enters a locking state, and the whole automobile cannot move. If the vehicle is forcibly moved without unlocking the transmission, the transmission is seriously damaged. If the vehicle is not moved, the failed vehicle cannot be moved to a maintenance facility for repair.

Therefore, the automobile is equipped with an electronic parking system and then needs to be equipped with a P-gear parking unlocking to execute manual unlocking. The existing electronic parking mechanism is limited by cost or space, and even if a device for entering and exiting the P gear under emergency is installed, the existing electronic parking mechanism is affected by the parking mechanism in a very complicated way, so that the cost is increased.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a parking mechanism capable of emergently outputting a P gear, and solves the problems that an emergency unlocking device in the parking mechanism in the related art is complex in design and high in cost.

In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows: one aspect provides a construction kit for a percutaneous access channel, comprising: the driving plate is provided with a limiting port and is connected with the transmission mechanism; the parking device can enable the automobile to enter a P gear or exit the P gear; the electronic driving device is connected with a connecting pin penetrating through the limiting port, and the connecting pin can be used for being matched with the parking device to enable the automobile to enter a P gear or exit the P gear; the limiting opening can be matched with the connecting pin under the driving of the transmission mechanism so that the automobile can go out of the P gear.

In some embodiments, the transmission mechanism comprises: a drive shaft disposed through said drive plate, said drive plate and said drive shaft being non-rotatable relative to each other; and the rocker arm is positioned in the automobile cab, is connected with the driving shaft and can drive the driving shaft to rotate around the central shaft of the driving shaft.

In some embodiments, the rocker arm is provided with a detachable fixing bolt.

In some embodiments, the electronic driving device comprises: a shift drum driven by the control system; and one end of the pull rod is connected with the gear shifting drum, and the other end of the pull rod penetrates through the connecting pin.

In some embodiments, the pull rod is sleeved with a spring component, and the spring component abuts against the connecting pin.

In some embodiments, a connecting arm is arranged on the shift drum, and the shift drum is connected with the pull rod through the connecting arm.

In some embodiments, a second connecting pin is provided on the connecting arm, and the second connecting pin is used for connecting and fixing the shift drum and the connecting arm.

In some embodiments, the parking device includes: a cam ring assembly which is sleeved on the transmission shaft in an empty way; a parking ratchet wheel which is connected with the transmission shaft in a sleeved mode in a non-relatively-rotatable mode; and the pawl assembly is connected with the cam ring assembly and is used for being engaged with or disengaged from the parking ratchet wheel under the driving of the cam ring assembly.

In some embodiments, a limit pin is provided on the pawl assembly for engagement with the parking ratchet.

In some embodiments, the portion of the pawl assembly that is coupled to the cam ring assembly is a hook. The cam ring component is provided with a limiting groove, and the hook-shaped part is clamped in the limiting groove.

Compared with the related art, the parking mechanism capable of emergently outputting the P gear

(1) When the emergency unlocking function is realized, the design is simplified, the manufacture is easy, and the cost of the parking mechanism is reduced.

(2) The emergency unlocking device of the parking mechanism in the embodiment occupies less space, and provides convenience for the design of the parking mechanism.

(3) The emergency unlocking device and the electronic parking mechanism of the parking mechanism in the embodiment of the utility model are not affected mutually during normal work.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments 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 to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a front view of a parking mechanism in an embodiment of the present invention.

Fig. 2 is a front view of the electronic parking mechanism without the manual emergency unlocking device in the embodiment of the utility model.

Fig. 3 is a schematic diagram of the movement of the emergency unlocking device in the embodiment of the utility model.

Fig. 4 is a perspective view of an emergency unlocking device according to an embodiment of the present invention.

In the figure: 1. a shift drum; 2. a connecting arm; 21. a second connecting pin; 3. a pull rod; 4. a parking ratchet wheel; 5. a pawl assembly; 51. a pawl body; 52. a ratchet; 6. a cam ring assembly; 7. A connecting pin; 8. a drive plate; 81. a limiting port; 9. a drive shaft; 10. a rocker arm; 11. fixing the bolt; 12. a spring assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a parking structure capable of implementing an emergency P-gear shift, which is divided into two parts:

the electronic parking mechanism shown in fig. 2 includes:

(1) a parking device: a parking ratchet 4 that is fitted to a transmission shaft of a vehicle so as to be relatively non-rotatable; and the pawl assembly 5 is connected with a cam ring assembly 6 which is sleeved on a transmission shaft in an empty mode so that the pawl assembly 5 is in an engagement state or a disengagement state with the parking ratchet wheel 4, and therefore the automobile enters a P gear or leaves the P gear.

(2) An electronic driving device comprising: one end of the pull rod 3 is fixed with the gear shifting drum 1, and the other end of the pull rod is provided with a connecting pin 7. Specifically, one end of the pull rod 3, which is provided with the connecting pin 7, is sleeved with a spring assembly 12, and the spring assembly 12 abuts against the cam ring assembly 6.

It can be understood that a connecting arm 2 can be additionally arranged between the pull rod 3 and the shift drum 1, and the connecting arm 2 can realize the transmission ratio from the shift drum 1 to the pull rod 3.

Preferably, the connecting arm 2 and the shift drum 1 are connected together by a second connecting pin 21.

Specifically, the pawl assembly 5 also includes a pawl body 51 and ratchet teeth 52 for engagement with the parking ratchet 4, wherein the pawl body 51 is driven by the cam ring assembly 6 to move in position so that the ratchet teeth 52 can be shifted between an engaged state and a disengaged state with respect to the ratchet.

Preferably, one end of a pawl body 51 of the pawl assembly 5 is provided with a ratchet 52, the other end is made into an arc-shaped hook part, and meanwhile, the part of the cam ring assembly 6, which is matched with the pawl body 51, is made into a limit groove matched with the hook part. The cam ring assembly 6 enables the pawl assembly 5 to be engaged with or disengaged from the parking ratchet wheel 4 through the matching of the limiting grooves and the hook parts. It will be appreciated that in order to achieve a better engagement, the ratchet teeth 52 are provided with a limit pin which engages with the teeth of the parking ratchet 4.

In use, as shown in fig. 2, a control system gives a command to the shift drum 1, and the shift drum 1 drives the connecting arm 2. The connecting arm 2 drives the pull rod 3 to move towards a preset position close to the cam ring assembly 6, so that the spring is compressed and deformed to apply acting force to the connecting pin 7, and when the cam ring assembly 6 which is sleeved on the transmission shaft in an empty state is subjected to continuous acting force and rotates anticlockwise, the ratchet teeth 52 on the pawl assembly 5 are meshed with the parking ratchet wheel 4 to achieve a parking state. When the pull rod 3 is forced to move towards the cam ring assembly 6, the spring assembly 12 is continuously compressed by being abutted against the cam ring assembly. When ratchet 52 is temporarily jammed due to non-correspondence with the position of parking ratchet 4, spring assembly 12 is continuously pressed against cam ring assembly 6 via connecting pin 7 due to being compressed and deformed until ratchet 52 engages with parking ratchet 4 to rotate cam ring assembly 6, so that spring assembly 12 returns to normal deformation. When the control system sends an unlocking parking state, the pull rod 3 moves in the direction far away from the cam ring assembly 6 under the control of the shift drum 1, and at the moment, the connecting pin 7 on the pull rod 3 can abut against the cam ring assembly 6 and apply pressure to compress the spring, and drive the cam ring assembly 6 to rotate clockwise. At the moment, the cam ring component 6 drives the pawl component 5 to be disengaged from the parking ratchet wheel 4, and parking unlocking (P gear output) is realized.

(3) The emergency unlocking device shown in fig. 3 and 4 includes: a drive plate 8 and a transmission mechanism. One part of the transmission mechanism is arranged in the operation space of the automobile, and the other part of the transmission mechanism is connected with the driving plate 8 to control the rotation of the driving plate 8. Wherein the driving plate 8 is provided with a limiting opening 81, and the connecting pin 7 is used for being matched with the cam ring assembly 6 and also penetrates through the limiting opening 81. The spacing of the limiting opening 81 is designed, and when the initial position of the driving plate 8 is unchanged, the connecting pin 7 can move in the limiting opening 81 of the driving plate 8 without interference. Therefore, the emergency unlocking device does not affect the use of the electronic parking mechanism.

Specifically, the transmission mechanism described above with reference to fig. 4 includes: a drive shaft 9 penetrating the drive plate 8, the drive plate 8 being connected to the drive shaft 9 so as to be relatively non-rotatable; a rocker arm 10 connected with the driving shaft 9, wherein the rocker arm 10 can drive the driving shaft 9 to rotate around the central shaft of the driving shaft. Wherein, the rotation of the driving shaft 9 can drive the driving plate 8 to rotate by taking the driving shaft 9 as a center; and the driving rocker arm 10 is a portion provided in an operation space of the vehicle, which can be rotated by a manual operation to rotate the driving shaft 9.

Preferably, the rocker arm 10 is provided with a detachable fixing bolt 11 in a penetrating manner, and the fixing bolt 11 is used for fixing the rocker arm 10, so that the rotation of the rocker arm 10 caused by misoperation of a driver is avoided.

In use, referring to fig. 3, the fixing bolt 11 is firstly pulled out, and then the rocker arm 10 is rotated according to the direction P shown in fig. 3, so that the rotation of the rocker arm 10 drives the driving shaft 9 to rotate and the driving plate 8 to rotate counterclockwise. At this time, the left frame of the limit opening of the driving plate 8 is close to the connecting pin 7, and pushes the connecting pin 7 to apply a force to the cam ring assembly 6 rightward, so that the cam ring assembly 6 rotates clockwise to drive the ratchet 52 to be disengaged from the parking ratchet 4.

In summary, the electronic parking mechanism is provided with an emergency unlocking device, and the cooperation of the connecting pin 7 and the cam ring assembly 6 is utilized to drive the ratchet 52 to be disengaged from the parking ratchet 4, so as to realize the function of emergent P-gear output. In addition, because only two parts of the driving plate 8 and the driving shaft 9 are additionally arranged on the parking mechanism, the parking mechanism occupies less space and is easy to manufacture, and the cost is saved. The limiting opening 81 matched with the connecting pin 7 is contacted with the connecting pin 7 only when the rocker arm is rotated; which can move without interference in the limiting opening 81 when the emergency unlocking device is not used. Meanwhile, the rocker arm 10 is additionally arranged in the operating room, so that a driver can easily realize manual unlocking and parking.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A parking mechanism capable of emergently exiting P gear is characterized by comprising:

the driving plate (8) is provided with a limiting opening (81) and is connected with the transmission mechanism;

the parking device can enable the automobile to enter a P gear or exit the P gear;

the electronic driving device is connected with a connecting pin (7) penetrating through the limiting opening (81), and the connecting pin (7) can be used for being matched with the parking device to enable the automobile to enter a P gear or exit the P gear;

the limiting opening (81) can be matched with the connecting pin (7) under the driving of the transmission mechanism so that the automobile can go out of the P gear.

2. The parking mechanism of claim 1, wherein the transmission mechanism comprises:

a drive shaft (9) penetrating through the drive plate (8), wherein the drive plate (8) and the drive shaft (9) cannot rotate relatively;

and the rocker arm (10) is positioned in an automobile cab, and the rocker arm (10) is connected with the driving shaft (9) and can drive the driving shaft (9) to rotate around a self central shaft.

3. The parking mechanism according to claim 2, characterized in that:

the rocker arm (10) is provided with a detachable fixing bolt (11) in a penetrating way.

4. The parking mechanism of claim 1, wherein the electronic drive means comprises:

a shift drum (1) driven by a control system;

and one end of the pull rod (3) is connected with the gear shifting drum, and the other end of the pull rod (3) penetrates through the connecting pin (7).

5. The parking mechanism according to claim 4, characterized in that:

the pull rod (3) is sleeved with a spring component (12), and the spring component (12) is abutted against the connecting pin (7).

6. The parking mechanism according to claim 4, characterized in that:

be equipped with on shift drum (1) linking arm (2), just shift drum (1) passes through linking arm (2) with pull rod (3) are connected.

7. The parking mechanism according to claim 6, characterized in that:

and a second connecting pin (21) is arranged on the connecting arm (2), and the second connecting pin (21) is used for enabling the gear shifting drum (1) to be fixedly connected with the connecting arm (2).

8. The parking mechanism according to claim 1, characterized in that the parking device includes:

a cam ring assembly (6) which is sleeved on the transmission shaft in an empty way;

a parking ratchet (4) which is connected to the transmission shaft in a rotationally fixed manner;

and the pawl assembly (5) is connected with the cam ring assembly (6) and is used for being engaged with or disengaged from the parking ratchet wheel (4) under the driving of the cam ring assembly (6).

9. The parking mechanism according to claim 8, characterized in that:

and a limiting pin used for being meshed with the parking ratchet wheel (4) is arranged on the pawl component (5).

10. The parking mechanism according to claim 8, characterized in that:

the part of the pawl assembly (5) connected with the cam ring assembly (6) is a hook-shaped part;

the cam ring component (6) is provided with a limiting groove, and the hook-shaped part is clamped in the limiting groove.