CN115076367A - Parking mechanism and vehicle - Google Patents
Parking mechanism and vehicle Download PDFInfo
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- CN115076367A CN115076367A CN202110272351.8A CN202110272351A CN115076367A CN 115076367 A CN115076367 A CN 115076367A CN 202110272351 A CN202110272351 A CN 202110272351A CN 115076367 A CN115076367 A CN 115076367A
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- ratchet wheel
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- 230000007246 mechanism Effects 0.000 title claims abstract description 92
- 230000005540 biological transmission Effects 0.000 claims abstract description 78
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- 238000007906 compression Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 16
- 238000013461 design Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 6
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
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Abstract
The embodiment of the invention provides a parking mechanism and a vehicle, and relates to the technical field of vehicle parking systems, wherein the parking mechanism is used for being clamped with or separated from a ratchet wheel and comprises: the parking device comprises a parking base, a parking pawl, an elastic piece and a transmission mechanism; the parking pawl is hinged with the parking base; the elastic piece is arranged between the parking pawl and the parking base and used for driving the parking pawl to be separated from the ratchet wheel; the transmission mechanism is connected with the parking base and used for driving the parking pawl to move towards the ratchet wheel. The parking mechanism provided by the embodiment of the invention has the advantages of simple structure and reliable function, and because the transmission mechanism, the parking pawl and the elastic piece are all connected with the parking base, the parking base can be installed or disassembled in the assembling and disassembling process of the parking mechanism, the integral assembling and disassembling of the parking mechanism can be realized, the subsequent design of a reducer shell and the disassembling and recovering of the parking mechanism are facilitated, and the design and processing difficulty of the installation shell of the parking mechanism can be reduced.
Description
Technical Field
The invention relates to the technical field of vehicle parking systems, in particular to a parking mechanism and a vehicle.
Background
The parking mechanism is an important part on the vehicle and mainly has the function of providing resistance for the vehicle when the vehicle is parked so that the vehicle does not slide.
At present, most parking mechanisms mainly adopt a mechanical structure of a ratchet wheel and a pawl, and when a vehicle has a movement trend in a parking process, the pawl can block the ratchet wheel to enable the ratchet wheel not to rotate, so that a parking effect is achieved.
However, in the conventional ratchet pawl type parking mechanism, each component is usually mounted on the reducer housing, which requires high machining requirements for the reducer housing and is inconvenient for assembling and disassembling the parking mechanism.
Disclosure of Invention
The embodiment of the invention provides a parking mechanism and a vehicle, and aims to solve the problems that an existing ratchet pawl type parking mechanism is large in installation shell processing difficulty and inconvenient to assemble and disassemble.
In order to solve the above problems, the embodiment of the invention discloses a parking mechanism, which is used for being clamped with or separated from a ratchet wheel; the parking mechanism includes: the parking device comprises a parking base, a parking pawl, an elastic piece and a transmission mechanism;
the parking pawl is hinged with the parking base;
the elastic piece is arranged between the parking pawl and the parking base and used for driving the parking pawl to be separated from the ratchet wheel;
the transmission mechanism is connected with the parking base and is used for driving the parking pawl to move towards the ratchet wheel;
the parking base is provided with a mounting hole, and the mounting hole is used for connecting a mounting bolt.
Optionally, the transmission mechanism comprises a transmission assembly, a push rod, a pressure spring and a slide block;
the transmission assembly is connected with the parking base;
the push rod is connected with the transmission assembly; the push rod is sleeved with the pressure spring and the sliding block;
one end of the pressure spring is abutted to the push rod, and the other end of the pressure spring is abutted to the sliding block;
a first groove is formed in one side, facing the parking base, of the parking pawl, and the transmission assembly drives the push rod to penetrate through a movement space formed by the first groove and the parking base to move in a telescopic mode;
the sliding block is abutted to the first groove to drive the parking pawl to move towards the ratchet wheel.
Optionally, in the first direction, the slider is provided with a large diameter portion, a guide portion and a small diameter portion in sequence; wherein the first direction is a sliding direction of the sliding block along the push rod;
a diameter of the large diameter portion is larger than a diameter of the small diameter portion in a plane perpendicular to the first direction; the guide part is provided with a smooth surface, and the large-diameter part is arranged on one side of the sliding block close to the transmission assembly;
one side of the first groove facing the transmission assembly is provided with a first chamfer, and the guide portion is abutted to the first chamfer.
Optionally, the transmission assembly further comprises a limiting block; the limiting block is connected with the push rod;
the parking mechanism further comprises a plate spring;
the plate spring is fixedly connected with the parking base;
the plate spring is provided with a first limiting part and a second limiting part;
under the condition that the parking pawl is separated from the ratchet wheel, the limiting block is abutted against the first limiting part;
under the condition that the parking pawl is connected with the ratchet wheel in a clamped mode, the limiting block is abutted to the second limiting portion.
Optionally, the parking base is provided with a support portion;
the support part has a first projection on the surface of the parking base, the parking pawl has a second projection on the surface of the parking base, and the first projection and the second projection are at least partially overlapped;
the support portion abuts against the slider in a state where the parking pawl is fitted into a tooth groove of the ratchet.
Optionally, a surface of the support portion away from the parking base is provided with a second groove;
the second groove is provided with a cylindrical inner wall, and a second chamfer is arranged on one side, facing the transmission assembly, of the second groove;
the slider abuts the second chamfer with the parking pawl fitted into the tooth groove of the ratchet.
Optionally, the transmission assembly comprises a transmission rod and a connecting rod;
the transmission rod is fixedly connected with the connecting rod; the connecting rod is hinged with the push rod; the transmission rod is hinged to the parking base.
Optionally, the parking base is provided with a rotation limiting part;
the rotation limiting part is provided with a third groove, and the third groove is provided with an opening; the connecting rod is embedded in the third groove, and the rotation limiting part restricts the connecting rod to move within the opening range.
Optionally, the elastic member is a torsion spring or a compression spring.
The embodiment of the invention also discloses a vehicle which comprises the parking mechanism.
The embodiment of the invention has the following advantages:
according to the parking mechanism and the vehicle provided by the embodiment of the invention, the parking pawl can be clamped with the ratchet wheel under the action of the transmission mechanism to realize parking, and can be separated from the ratchet wheel under the action of the elastic piece to realize resetting under the condition that parking is not needed, the structure is simple, the function is reliable, and the transmission mechanism, the parking pawl and the elastic piece are all connected with the parking base, so that the integral assembly and disassembly of the parking mechanism can be realized by installing or disassembling the parking base in the assembling and disassembling processes of the parking mechanism, the subsequent design of a reducer shell and the disassembly and recovery of the parking mechanism are facilitated, and the design and processing difficulty of the installation shell of the parking mechanism can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a parking mechanism according to an embodiment of the present invention;
FIG. 2 is a front view of a parking mechanism according to an embodiment of the present invention;
FIG. 3 is a top view of a parking mechanism according to an embodiment of the present invention;
fig. 4 is a left side view of a parking mechanism according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the invention provides a parking mechanism which is used for being connected with or separated from a ratchet wheel in a clamping way; the parking mechanism includes: a parking base 11, a parking pawl 12, an elastic piece 13 and a transmission mechanism 14; the parking pawl 12 is hinged with the parking base 11; the elastic piece 13 is arranged between the parking pawl 12 and the parking base 11 and is used for driving the parking pawl 12 to be disengaged from the ratchet wheel; the transmission mechanism 14 is connected with the parking base 11, and the transmission mechanism 14 is used for driving the parking pawl 12 to move towards the ratchet wheel; the parking base 11 is provided with a mounting hole 16, and the mounting hole 16 is used for connecting a mounting bolt.
Referring to fig. 1, a parking base 11 is hinged to a parking pawl 12, an elastic member 13 may be disposed between the parking pawl 12 and the parking base 11 to provide an elastic force away from a ratchet wheel for the parking pawl 12 all the time, and the elastic member 13 may drive the parking pawl 12 to disengage from the ratchet wheel under the condition that the vehicle does not need to be parked, specifically, since the parking pawl 12 is hinged to the parking base 11, in the process of clamping the parking pawl 12 with the ratchet wheel, the parking pawl 12 may rotate around the hinged position, a part of the structure of the parking pawl 12 moves close to the ratchet wheel to realize clamping with the ratchet wheel, and the elastic member 13 may be disposed between the part of the structure of the parking pawl 12 moving close to the ratchet wheel and the parking base 11 to provide a pulling force for the parking pawl 12.
The transmission mechanism 14 may be connected to the parking base 11 to drive the parking pawl 12 to move toward the ratchet, so as to clamp the parking pawl 12 to the ratchet, thereby achieving the parking effect. Specifically, the transmission mechanism 14 may output circular motion, for example, the output end of the transmission mechanism 14 may be directly and fixedly connected to the parking pawl 12, so that the rotation axis of the circular motion output by the transmission mechanism 14 is the same as the rotation axis of the parking pawl 12, and the transmission mechanism 14 may directly drive the parking pawl 12 to rotate, thereby achieving the engagement between the parking pawl 12 and the ratchet; the output end of the transmission mechanism 14 can also be fixedly connected with a cam, so that the contour curved surface of the cam is abutted to the parking pawl 12, and the cam is driven to rotate along with the output circular motion of the transmission mechanism 14, so that the contour curved surface abutted to the parking pawl 12 is continuously changed, the parking pawl 12 is driven to rotate along the hinge center, and the clamping connection of the parking pawl 12 and the ratchet wheel is realized; the gear mechanism 14 may also output a linear movement, for example, the output of the gear mechanism 14 may directly abut against the parking pawl 12, the linear movement of the output having a partial movement towards the ratchet wheel, which may bring the parking pawl 12 towards the ratchet wheel.
The parking base 11 is provided with a mounting hole 16, and the parking base 11 and the reducer case can be connected through the mounting hole 16. The concrete connection mode can adopt the bolt to dismantle the connection, and the construction bolt passes mounting hole 16 and retarder housing in proper order, realizes dismantling of parking base 11 and retarder housing to be connected, the installation and the dismantlement maintenance of the parking mechanism of being convenient for.
According to the parking mechanism provided by the embodiment of the invention, the parking pawl 12 can be clamped with the ratchet wheel under the action of the transmission mechanism 14 to realize parking, and under the condition that parking is not needed, the parking pawl 12 can be separated from the ratchet wheel under the action of the elastic piece 13 to realize resetting, the structure is simple, the function is reliable, and as the transmission mechanism 14, the parking pawl 12 and the elastic piece 13 are all connected with the parking base 11, in the assembling and disassembling processes of the parking mechanism, the integral assembling and disassembling of the parking mechanism can be realized by installing or disassembling the parking base 11, the subsequent design of a speed reducer shell and the disassembling and recovering of the parking mechanism are convenient, and the design and processing difficulty of the installation shell of the parking mechanism can be reduced.
In the embodiment of the present invention, referring to fig. 2 and 3, the transmission mechanism 14 includes a transmission assembly 141, a push rod 142, a compression spring 143, and a slide block 144; the transmission assembly 141 is connected with the parking base 11; the push rod 142 is connected with the transmission assembly 141; the push rod 142 is sleeved with the pressure spring 143 and the sliding block 144; one end of the pressure spring 143 is abutted with the push rod 142, and the other end of the pressure spring 143 is abutted with the slide block 144; a first groove 121 is formed in one side of the parking pawl 12 facing the parking base 11, and the transmission assembly 141 drives the push rod 142 to move telescopically through a movement space formed by the first groove 121 and the parking base 11; the slider 144 abuts the first groove 121, and the parking pawl 12 is moved toward the ratchet.
In practical applications, when parking is needed, due to uncertainty of the position of the ratchet wheel when parking, there is usually a case that the parking pawl 12 is not inserted into the tooth socket of the ratchet wheel during the process that the parking pawl 12 is engaged with the ratchet wheel, and due to the existence of the case, there is a difference in the angle of rotation of the parking pawl 12 around the hinge position of the parking pawl 12 and the parking base 11 during each parking.
In order to reliably engage the parking pawl 12 with the ratchet wheel each time the vehicle is parked, in the embodiment of the present invention, referring to fig. 2, one side of the parking pawl 12 facing the parking base 11 may be provided with a first groove 121, and the slider 144 abuts against the first groove 121 under the elastic force provided by the compression spring 143, where the slider 144 contacts the first groove 121 may be a line contact, for example, the first groove 121 may have a conical inner wall, an axis of the conical inner wall may be substantially parallel to a surface of the parking base 11 facing the parking pawl 12, an apex angle of an axial cross section of the conical inner wall is set in a direction away from the transmission assembly 141, and a part of the slider 144 abutting against the conical inner wall may have a rounded corner; the contact between the sliding block 144 and the first groove 121 may also be surface contact, for example, the sliding block 144 and the first groove 121 have the same conical surface profile, and the surface of the sliding block 144 may form surface contact with the inner wall of the first groove 121; the first groove 121 may also have a cylindrical inner wall, an axis of the cylindrical inner wall may be substantially parallel to a surface of the parking base 11 facing the parking pawl 12, at this time, the slider 144 may have a conical surface, and an apex angle of an axial cross section of the conical surface is set in a direction away from the transmission assembly 141, and so on.
The transmission mechanism 14 may include a transmission assembly 141, a push rod 142, a compression spring 143, and a slider 144, and the transmission assembly 141 may drive the push rod 142 to move telescopically through a movement space formed between the first groove 121 and the parking base 11. Specifically, the connecting structure of the transmission assembly 141 and the push rod 142 is used as a first connecting structure, in the process that the transmission assembly 141 drives the push rod 142 to extend out through a movement space formed between the first groove 121 and the parking base 11, the distance between the first connecting structure and the parking pawl 12 is gradually reduced, at this time, as the slider 144 abuts against the first groove 121, the pressure spring 143 is continuously compressed, the generated elastic force is gradually increased, the contact force at the abutting part of the first groove 121 and the slider 144 is also gradually increased, when the contact force forms a moment along the rotation axis of the parking pawl 12, which is greater than the restoring moment provided by the elastic member 13, the parking pawl 12 moves towards the ratchet wheel, and the slider 144 continues to abut against the first groove 121 under the action of the pressure spring 143; in the process that the transmission assembly 141 drives the push rod 142 to retract through the movement space formed between the first groove 121 and the parking base 11, the distance between the first connecting structure and the parking pawl 12 gradually increases, at the moment, the pressure spring 143 is gradually released, the generated elastic force is gradually reduced, the contact force at the abutting part of the first groove 121 and the sliding block 144 is also gradually reduced, when the contact force forms a moment along the rotation axis of the parking pawl 12 and is smaller than the reset moment provided by the elastic piece 13, the parking pawl 12 is separated from the ratchet wheel, and the sliding block 144 continuously abuts against the first groove 121 under the action of the pressure spring 143. Through the elastic force of changing pressure spring 143, can change the contact force of slider 144 and parking pawl 12 butt department, and then drive parking pawl 12 towards the ratchet motion, realize the reliable joint of parking pawl 12 and ratchet, reach the parking effect.
In the embodiment of the present invention, along the first direction, the sliding block 144 is sequentially provided with a large diameter portion, a guide portion 1441, and a small diameter portion; wherein the first direction is a sliding direction of the sliding block 144 along the push rod 142; a diameter of the large diameter portion is larger than a diameter of the small diameter portion in a plane perpendicular to the first direction; the guide 1441 has a smooth surface, and the large diameter portion is disposed on a side of the slider 144 close to the transmission assembly 141; the first groove 121 is provided with a first chamfer 1211 on a side facing the transmission assembly 141, and the guide 1441 abuts against the first chamfer 1211.
The guide part 1441 has a smooth surface, that is, in a plane substantially perpendicular to the first direction, a section of the guide part 1441 adjacent to the large diameter part has a first diameter equal to a diameter of the large diameter part, and a section of the guide part 1441 adjacent to the small diameter part has a second diameter equal to a diameter of the small diameter part, and the diameter of the guide part 1441 is continuously reduced from the first diameter to equal to the second diameter in the first direction, so that the guide part 1441 has a smooth continuous surface.
The guide part 1441 is abutted to the first chamfer 1211, the structure is simple, the function is reliable, the contact force of the abutting position of the sliding block 144 and the first groove 121 is guaranteed to have component force along the circumferential direction of the rotation of the parking pawl 12, the parking pawl 12 is further driven to rotate along the rotation axis of the parking pawl 12, the clamping of the parking pawl 12 and a ratchet wheel is achieved, the first chamfer 1211 is arranged on one side, facing the transmission assembly 141, of the first groove 121, the resistance of the sliding block 144 to move along the first direction under the action of the pressure spring 143 can be reduced, and the movement stability of the parking pawl 12 is guaranteed.
In the embodiment of the present invention, the transmission assembly 141 further includes a limit block 1411; the stop block 1411 is connected with the push rod 142; the parking mechanism further comprises a plate spring 15; the plate spring 15 is fixedly connected with the parking base 11; the plate spring 15 has a first limit portion and a second limit portion; when the parking pawl 12 is disengaged from the ratchet wheel, the stopper 1411 abuts against the first stopper portion; under the condition that the parking pawl 12 is clamped with the ratchet wheel, the limiting block 1411 is abutted to the second limiting part.
Referring to fig. 2, the stopper 1411 may be a cylindrical structure, wherein a cylindrical axis may be perpendicular to a surface of the parking base 11 facing the parking pawl 12, under the action of the driving force, the stopper 1411 may move between the first stopper and the second stopper, and the stopper 1411 may be fixedly connected to the push rod 142, for example, an end of the push rod fixedly connected to the stopper may be connected to a pin through a thread, an axis of the pin is perpendicular to an axis of the push rod, and the stopper may be fixed to the pin through a thread, so as to achieve the fixed connection between the stopper 1411 and the push rod 142, and under the driving of the transmission assembly 141, the stopper 1411 may slide between the first stopper and the second stopper; the limiting block 1411 may also be hinged to the push rod 142, for example, the end of the push rod connected to the limiting block may be connected to a pin through a thread, the axis of the pin is perpendicular to the axis of the push rod, the limiting block may be hinged to the pin to realize the hinging of the limiting block 1411 to the push rod 142, and the limiting block 1411 may roll between the first limiting portion and the second limiting portion under the driving of the transmission assembly 141.
When parking pawl 12 and ratchet joint, stopper 1411 and the spacing portion butt of second, even if when the parking, the tooth top joint of parking pawl 12 and ratchet, because stopper 1411 receives the elastic force effect of the spacing portion of second, can retrain stopper 1411 in the spacing portion of second, need not to continuously apply drive power, can effectively avoid taking place under the condition that can't provide drive power drive transmission mechanism 14 in succession, parking pawl 12 breaks away from the ratchet, lead to the problem of unable parking, the structure is reliable and energy saving.
In the embodiment of the present invention, the parking base 11 is provided with a support portion 111; the support portion 111 has a first projection on the surface of the parking base 11, the parking pawl 12 has a second projection on the surface of the parking base 11, and the first projection and the second projection at least partially coincide; when the parking pawl 12 is fitted into the tooth groove of the ratchet wheel, the support portion 111 abuts against the slider 144.
Referring to fig. 4, the slider 144 abuts the parking pawl 12 according to newton's third law: the acting force and the reacting force between two interacting objects are always equal in magnitude and opposite in direction, and act on the same straight line, so that at the abutting position of the sliding block 144 and the parking pawl 12, the parking pawl 12 receives the contact force and has component force along the rotation direction of the parking pawl 12, then the reacting force of the contact force received by the sliding block 144 has component force towards the direction of the parking base 11 in a plane perpendicular to the rotation axis of the parking pawl 12, and under the condition that the parking pawl 12 is embedded into the tooth space of the ratchet wheel, the supporting part 111 is arranged to effectively support the sliding block 144 due to the large deformation of the pressure spring 143 and large elastic force, and further the stability and the reliability of the clamping connection of the parking pawl 12 and the ratchet wheel driven by the sliding block 144 are ensured.
In practical application, the supporting portion 111 can always contact with the sliding block 144 in the process that the sliding block 144 drives the parking pawl 12 to be clamped with the ratchet wheel, so that the sliding block 144 can slide along the surface of the supporting portion 111 in the process that the transmission assembly 141 drives the push rod 142 to extend and retract through a movement space formed between the parking pawl 12 and the supporting portion 111, and the stability and the reliability of the process that the sliding block 144 drives the parking pawl 12 to be clamped with the ratchet wheel can be further improved.
In the embodiment of the present invention, the surface of the support portion 111 away from the parking base 11 is provided with a second groove; the second groove is provided with a cylindrical inner wall, and a second chamfer is arranged on one side of the second groove facing the transmission assembly 141; with the parking pawl 12 fitted into the tooth groove of the ratchet wheel, the slider 144 abuts against the second chamfer.
Set up the second chamfer, under the condition of parking pawl 12 embedding tooth's socket of ratchet, slider 144 and second chamfer butt can guarantee that slider 144 and supporting part 111 can reliably butt, and supporting part 111 can effectively support slider 144, and then guarantees that parking pawl 12 can imbed the tooth's socket of ratchet effectively.
In the present embodiment, the transmission assembly 141 includes a transmission rod 1412 and a connecting rod 1413; the transmission rod 1412 is fixedly connected with the connecting rod 1413; the connecting rod 1413 is hinged with the push rod 142; the transmission rod 1412 is hinged to the parking base 11.
In practical application, the parking mechanism can be motor-driven, the motor is fixedly connected with the transmission rod 1412, the transmission rod 1412 is fixedly connected with the connecting rod 1413, the connecting rod 1413 is hinged to the push rod 142, the motion of the motor can be transmitted to the push rod 142, the push rod 142 is driven to move through the motion space formed between the parking pawl 12 and the parking base 11 in a telescopic mode, the structure is simple, the realization is convenient, in addition, the motor shell can be fixedly connected with the parking base 11, the parking base 11 can be installed or disassembled, the integral installation or disassembly of the parking mechanism is realized, the operation is convenient, and the design and the processing difficulty of the installation shell of the parking mechanism can be reduced.
In practical application, the parking mechanism can also be driven manually, the driving rod is fixedly connected with the driving rod 1412, the driving rod 1412 is fixedly connected with the connecting rod 1413, the connecting rod 1413 is hinged to the push rod 142, the movement of the driving rod can be transmitted to the push rod 142, and the push rod 142 is driven to move in a telescopic manner through a movement space formed between the parking pawl 12 and the parking base 11.
In the embodiment of the present invention, the parking base 11 is provided with a rotation limiting portion 112; the rotation limiting part 112 is provided with a third groove, and the third groove is provided with an opening; the link 1413 is inserted into the third groove, and the rotation limiting portion 112 restricts the link 1413 from moving within the opening range.
Referring to fig. 2 and 3, the rotation restricting portion 112 may be a boss structure provided on the surface of the parking base 11, the boss structure having a third groove having a circular cross section in a plane perpendicular to the rotation axis of the link 1413, the third groove being provided with an opening in a circumferential direction of the circular cross section; the connecting rod 1413 is embedded in the third groove, the rotation limiting portion 112 limits the connecting rod 1413 to move within the opening range, and the problems that the parking pawl 12 is damaged or the push rod 142 is separated from the sliding block 144 and the like due to the fact that the connecting rod 1413 exceeds the movement range of the parking mechanism can be avoided.
In practical applications, the rotation limiting portion 112 may also be two limiting members fixedly disposed on the surface of the parking base 11, the two limiting members are respectively disposed at the extreme positions of the rotation of the connecting rod 1413, the structure is simple, and when the connecting rod 1413 reaches the extreme positions, the limiting members may contact the connecting rod 1413 to limit the movement of the connecting rod 1413 beyond the extreme positions.
In the embodiment of the present invention, the elastic member 13 is a torsion spring or a compression spring.
Under the condition that the vehicle does not need to be parked, the elastic piece 13 can drive the parking pawl 12 to be separated from the ratchet wheel, under the action of the elastic piece 13, the parking pawl 12 can rotate along the hinge center until the parking pawl 12 reaches the reset position, referring to fig. 1, a compression spring can be adopted as the elastic piece 13, the parking pawl 12 is provided with an extension part, the part of the parking pawl 12 used for clamping the ratchet wheel and the extension part are respectively arranged on two sides of the hinge position of the parking pawl 12 and the parking base 11, the compression spring is arranged between the extension part and the parking base 11, the compression spring is compressed in the process of clamping the parking pawl 12 and the ratchet wheel, and under the condition that the vehicle does not need to be parked, the parking pawl 12 can be separated from the ratchet wheel through the elastic force of the compression spring; a torsion spring can also be used as the elastic piece 13, the torsion spring is arranged at the position where the parking pawl 12 is hinged with the parking base 11, the structure is simple, and the function is reliable.
The embodiment of the invention also provides a vehicle which comprises the parking mechanism.
The embodiment of the invention also provides a vehicle, because of the parking mechanism, the parking pawl 12 can be clamped with the ratchet under the action of the transmission mechanism 14 to realize parking, and under the condition that parking is not needed, the parking pawl 12 can be separated from the ratchet under the action of the elastic piece 13 to realize resetting, the structure is simple, the function is reliable, and because the transmission mechanism 14, the parking pawl 12 and the elastic piece 13 are all connected with the parking base 11, in the assembling and disassembling process of the parking mechanism, the integral assembling and disassembling of the parking mechanism can be realized by installing or disassembling the parking base 11, the subsequent design of a reducer shell and the disassembling and recovering of the parking mechanism are convenient, and the design and processing difficulty of the installation shell of the parking mechanism can be reduced.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It should also be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Moreover, relational terms such as "first" and "second" 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 or should not be construed as indicating or implying relative importance. 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 terminal 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 terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or terminal equipment comprising the element.
The technical solutions provided by the present application are described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understanding the present application, and the content of the present description should not be construed as limiting the present application. While various modifications of the illustrative embodiments and applications will be apparent to those skilled in the art based upon this disclosure, it is not necessary or necessary to exhaustively enumerate all embodiments, and all obvious variations and modifications can be resorted to, falling within the scope of the disclosure.
Claims (10)
1. A parking mechanism is used for being connected with or separated from a ratchet wheel in a clamping way; characterized in that, parking mechanism includes: the parking device comprises a parking base (11), a parking pawl (12), an elastic piece (13) and a transmission mechanism (14);
the parking pawl (12) is hinged with the parking base (11);
the elastic piece (13) is arranged between the parking pawl (12) and the parking base (11) and is used for driving the parking pawl (12) to be disengaged from the ratchet wheel;
the transmission mechanism (14) is connected with the parking base (11), and the transmission mechanism (14) is used for driving the parking pawl (12) to move towards the ratchet wheel;
the parking base (11) is provided with a mounting hole (16), and the mounting hole (16) is used for connecting a mounting bolt.
2. Parking mechanism according to claim 1, characterized in that the transmission mechanism (14) comprises a transmission assembly (141), a push rod (142), a pressure spring (143) and a slider (144);
the transmission assembly (141) is connected with the parking base (11);
the push rod (142) is connected with the transmission assembly (141); the push rod (142) is sleeved with the pressure spring (143) and the sliding block (144);
one end of the pressure spring (143) is abutted against the push rod (142), and the other end of the pressure spring (143) is abutted against the sliding block (144);
a first groove (121) is formed in one side, facing the parking base (11), of the parking pawl (12), and the transmission assembly (141) drives the push rod (142) to move in a telescopic mode through a movement space formed by the first groove (121) and the parking base (11);
the slider (144) abuts against the first groove (121) to drive the parking pawl (12) to move towards the ratchet wheel.
3. Parking mechanism according to claim 2, characterized in that, in a first direction, the slider (144) is provided with a large diameter portion, a guide portion (1441) and a small diameter portion in sequence; wherein the first direction is a direction in which the slider (144) slides along the push rod (142);
a diameter of the large diameter portion is larger than a diameter of the small diameter portion in a plane perpendicular to the first direction; the guide part (1441) has a smooth surface, and the large diameter part is arranged on one side of the sliding block (144) close to the transmission assembly (141);
one side of the first groove (121) facing the transmission assembly (141) is provided with a first chamfer (1211), and the guide part (1441) abuts against the first chamfer (1211).
4. Parking mechanism according to claim 3, wherein the transmission assembly (141) further comprises a stop block (1411); the limiting block (1411) is connected with the push rod (142);
the parking mechanism further comprises a plate spring (15);
the plate spring (15) is fixedly connected with the parking base (11);
the plate spring (15) is provided with a first limiting part and a second limiting part;
the stopper (1411) abuts against the first stopper portion in a case where the parking pawl (12) is disengaged from the ratchet;
under the condition that the parking pawl (12) is clamped with the ratchet wheel, the limiting block (1411) is abutted to the second limiting part.
5. Parking mechanism according to claim 2, characterized in that the parking base (11) is provided with a support (111);
the support part (111) has a first projection on the surface of the parking base (11), the parking pawl (12) has a second projection on the surface of the parking base (11), and the first projection and the second projection at least partially coincide;
the support portion (111) abuts against the slider (144) when the parking pawl (12) is fitted into a tooth groove of the ratchet wheel.
6. Parking mechanism according to claim 5, characterized in that the surface of the support (111) remote from the parking base (11) is provided with a second groove;
the second groove is provided with a cylindrical inner wall, and a second chamfer is arranged on one side, facing the transmission assembly (141), of the second groove;
the slider (144) abuts the second chamfer with the parking pawl (12) engaged in a tooth slot of the ratchet wheel.
7. Parking mechanism according to claim 2, wherein the transmission assembly (141) comprises a transmission rod (1412) and a link (1413);
the transmission rod (1412) is fixedly connected with the connecting rod (1413); the connecting rod (1413) is hinged with the push rod (142); the transmission rod (1412) is hinged with the parking base (11).
8. Parking mechanism according to claim 7, characterized in that the parking base (11) is provided with a rotation stop (112);
the rotation limiting part (112) is provided with a third groove, and the third groove is provided with an opening; the connecting rod (1413) is embedded in the third groove, and the rotation limiting part (112) restricts the movement of the connecting rod (1413) within the opening range.
9. Parking mechanism according to claim 1, characterized in that the elastic element (13) is a torsion spring or a compression spring.
10. A vehicle characterized in that it comprises a parking mechanism according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110272351.8A CN115076367A (en) | 2021-03-12 | 2021-03-12 | Parking mechanism and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110272351.8A CN115076367A (en) | 2021-03-12 | 2021-03-12 | Parking mechanism and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115076367A true CN115076367A (en) | 2022-09-20 |
Family
ID=83240932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110272351.8A Pending CN115076367A (en) | 2021-03-12 | 2021-03-12 | Parking mechanism and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115076367A (en) |
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