CN216200428U - Parking mechanism for transmission and transmission - Google Patents
Parking mechanism for transmission and transmission Download PDFInfo
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- CN216200428U CN216200428U CN202122519489.1U CN202122519489U CN216200428U CN 216200428 U CN216200428 U CN 216200428U CN 202122519489 U CN202122519489 U CN 202122519489U CN 216200428 U CN216200428 U CN 216200428U
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Abstract
The disclosure relates to the technical field of automatic transmissions, in particular to a parking mechanism for a transmission and a transmission, wherein the parking mechanism for the transmission comprises a pawl locking assembly used for locking or unlocking an output shaft of the transmission; the operating rod is used for controlling the pawl locking assembly to complete locking and unlocking work; and the transmission device comprises a shifting lever assembly and a push rod assembly, the shifting lever assembly comprises a first transverse plate, a second transverse plate, a rotating shaft and a first sleeve, the first sleeve is vertically installed on the shell of the transmission case, the first sleeve is sleeved on the rotating shaft, and one end of the first transverse plate is vertically fixed on two sides of the rotating shaft corresponding to one end of the second transverse plate. The C-shaped structure of the driving lever assembly is adopted by the mechanism, so that the action of the transmission operating rod can be completed, the smaller space in the gearbox shell can be occupied, and the opening in the middle of the C-shaped structure can facilitate the arrangement of other components in the gearbox shell.
Description
Technical Field
The disclosure relates to the technical field of automatic transmissions, in particular to a parking mechanism for a transmission and the transmission.
Background
An automotive transmission is a set of transmission devices for coordinating the rotational speed of an engine and the actual driving speed of wheels, and is used for exerting the best performance of the engine. The transmission can generate different gear ratios between an engine and wheels during the running process of the automobile, and the transmission of the rotating speeds of different gears is realized.
The manual transmission mainly comprises gears and a rotating shaft, and the speed change and torque change are generated by different gear combinations; the automatic transmission AT consists of a hydraulic torque converter, a planetary gear and a hydraulic control system, and achieves the purposes of speed and torque changing through a hydraulic transmission and gear combination mode.
Among them, the automatic transmission has advantages of comfortable driving, reducing fatigue of driver, etc., and has become a development direction of modern car configuration. The automatic transmission utilizes a planetary gear mechanism to change speed, can automatically change speed according to the degree of an accelerator pedal and the change of vehicle speed, and a driver only needs to operate the accelerator pedal to control the vehicle speed, so that the driver can watch road traffic with full attention without being confused by gear shifting.
The parking mechanism is a safety device for preventing the vehicle from sliding in the automatic transmission, so that the vehicle can be reliably parked at a certain position even on a slope without time limitation, and the parking mechanism adopts a mechanical driving structure so as to avoid failure. Currently, a parking mechanism of an automatic transmission is known which includes a parking ratchet, a parking pawl, a rotating shaft, and a support rod. The parking mechanism that uses at present is complicated and occupation space is many, hardly installs in the inside compact space of present automatic gearbox, not only brings the degree of difficulty for assembly work, also needs the inner space structure of design derailleur for parking mechanism simultaneously to reliable completion parking and the work of removing the parking when making parking mechanism can not disturb other part work.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a parking mechanism for a transmission and a transmission.
In a first aspect, the present disclosure provides a parking mechanism for a transmission, comprising:
the pawl locking assembly is used for locking or unlocking an output shaft of the gearbox;
the operating rod is used for controlling the pawl locking assembly to complete locking and unlocking work; and
transmission, including driving lever subassembly and push rod subassembly, the driving lever subassembly includes first diaphragm, second diaphragm, pivot and first sleeve, first sleeve is vertical to be installed on the transmission housing, first sleeve cover is established in the pivot, the one end of first diaphragm with the vertical fixation that the one end of second diaphragm corresponds the both sides of pivot, first diaphragm the second diaphragm and the pivot is connected and is formed C type structure, the action bars is installed first diaphragm is kept away from the one end of pivot, push rod subassembly's one end with the second diaphragm is kept away from one side of pivot is articulated, the other end with pawl locking subassembly is connected.
Optionally, the pawl locking assembly comprises a pushing block, a pawl and a ratchet wheel, the ratchet wheel is in transmission connection with the output shaft, the pawl is rotatably connected to a shell of the gearbox through a torsion spring, the pawl is provided with a matched tooth structure on the ratchet wheel, the pushing block is connected with the push rod assembly, and the push rod assembly enables the pushing block to push or pull the pawl, so that the pawl is locked or unlocked with the ratchet wheel.
Optionally, an arc-shaped surface structure is arranged on one side, facing the pawl, of the push block, and a guide inclined surface is arranged on one side, facing the push block, of the pawl.
Optionally, the pawl is provided with an accommodating recessed structure matched with the push block.
Optionally, a second sleeve is coaxially sleeved outside the push block, and the push block is close to or far away from the pawl along the axis direction of the second sleeve.
Optionally, a contact section matched with the inner diameter of the second sleeve is arranged on the push block, and the push block is in sliding connection with the second sleeve through the contact section.
Optionally, the push rod assembly comprises a transmission rod, the transmission rod is a C-shaped rod, one end of the C-shaped rod is a driving section, the driving section is used for installing the push block, and an opening of the C-shaped rod is used for avoiding the second sleeve.
Optionally, the other end of the C-shaped rod is a connecting section, the connecting section faces the second transverse plate and is bent, a through hole matched with the end of the connecting section is formed in the second transverse plate, and the end of the connecting section is rotatably connected with the second transverse plate through the through hole.
Optionally, a spring is arranged on the driving section, the driving section is connected with the pushing block through the spring, the driving section is in sliding insertion with the pushing block, and the driving section is parallel to the axis of the second sleeve.
In a second aspect, the present disclosure provides a gearbox comprising a parking mechanism as described above.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
according to the parking mechanism for the gearbox and the gearbox provided by the disclosure, through the C-shaped structure of the deflector rod assembly, when the action of the transmission operating rod is completed, can also occupy smaller space in the gearbox shell, the opening in the middle of the C-shaped structure can facilitate the arrangement of other components in the gearbox shell, and the amplitude of the frame-shaped structure is not large when the frame-shaped structure moves, so that the occupied space of the whole deflector rod assembly can be effectively reduced, the movement is simple, the stress mode is single, the installation and the maintenance are more convenient, it needs to be explained that the first transverse plate and the second transverse plate are both plate-shaped structures, and the face of first diaphragm and second diaphragm all is perpendicular with the pivot, sets up like this and can also reduce the driving lever subassembly when guaranteeing the driving lever subassembly intensity and influence lower to peripheral other parts when the motion, and the invasion space is littleer during the motion.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram illustrating an unlocked state of a parking mechanism for a transmission according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a locked state of a parking mechanism for a transmission according to an embodiment of the present disclosure.
Wherein, 1, operating rod; 21. a first transverse plate; 22. a second transverse plate; 23. a rotating shaft; 24. a first sleeve; 25. a transmission rod; 26. a connecting section; 27. a through hole; 28. a spring; 29. a drive section; 31. a push block; 311. an arc-shaped surface structure; 312. a contact section; 32. a pawl; 321. a guide slope; 322. an accommodating recessed structure; 33. a ratchet wheel; 34. a second sleeve.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
An automotive transmission is a set of transmission devices for coordinating the rotational speed of an engine and the actual driving speed of wheels, and is used for exerting the best performance of the engine. The transmission can generate different gear ratios between an engine and wheels during the running process of the automobile, and the transmission of the rotating speeds of different gears is realized.
The manual transmission mainly comprises gears and a rotating shaft, and the speed change and torque change are generated by different gear combinations; the automatic transmission AT consists of a hydraulic torque converter, a planetary gear and a hydraulic control system, and achieves the purposes of speed and torque changing through a hydraulic transmission and gear combination mode.
Among them, the automatic transmission has advantages of comfortable driving, reducing fatigue of driver, etc., and has become a development direction of modern car configuration. The automatic transmission utilizes a planetary gear mechanism to change speed, can automatically change speed according to the degree of an accelerator pedal and the change of vehicle speed, and a driver only needs to operate the accelerator pedal to control the vehicle speed, so that the driver can watch road traffic with full attention without being confused by gear shifting.
The parking mechanism is a safety device for preventing the vehicle from sliding in the automatic transmission, so that the vehicle can be reliably parked at a certain position even on a slope without time limitation, and the parking mechanism adopts a mechanical driving structure so as to avoid failure. Currently, a parking mechanism of an automatic transmission is known which includes a parking ratchet, a parking pawl, a rotating shaft, and a support rod. The parking mechanism that uses at present is complicated and occupation space is many, hardly installs in the inside compact space of present automatic gearbox, not only brings the degree of difficulty for assembly work, also needs the inner space structure of design derailleur for parking mechanism simultaneously to reliable completion parking and the work of removing the parking when making parking mechanism can not disturb other part work.
In view of this, the present embodiment provides a parking mechanism for a transmission and a transmission, which can complete the operation of a transmission operating lever and simultaneously, can also occupy smaller space in the gearbox shell, the opening in the middle of the C-shaped structure can facilitate the arrangement of other components in the gearbox shell, and the amplitude of the frame-shaped structure is not large when the frame-shaped structure moves, so that the occupied space of the whole deflector rod assembly can be effectively reduced, the movement is simple, the stress mode is single, the installation and the maintenance are more convenient, it needs to be explained that the first transverse plate and the second transverse plate are both plate-shaped structures, and the face of first diaphragm and second diaphragm all is perpendicular with the pivot, sets up like this and can also reduce the driving lever subassembly when guaranteeing the driving lever subassembly intensity and influence lower to peripheral other parts when the motion, and the invasion space is littleer during the motion. This is illustrated in detail by the following specific examples:
referring to fig. 1 and 2, the parking mechanism for the transmission provided by the embodiment includes a pawl locking assembly for locking or unlocking an output shaft of the transmission; the operating rod 1 is used for controlling the pawl locking assembly to complete locking and unlocking work; and a transmission device, including driving lever subassembly and push rod subassembly, the driving lever subassembly includes first diaphragm 21, second diaphragm 22, pivot 23 and first sleeve 24, first sleeve 24 is vertical to be installed on the gearbox casing, first sleeve 24 cover is established on pivot 23, the vertical fixation that the one end of first diaphragm 21 corresponds with the one end of second diaphragm 22 is in the both sides of pivot 23, first diaphragm 21, second diaphragm 22 and pivot 23 are connected and are formed C type structure, the one end of pivot 23 is kept away from at first diaphragm 21 is installed to action bars 1, one end of push rod subassembly is articulated with one side that pivot 23 was kept away from to second diaphragm 22, the other end is connected with pawl locking subassembly.
Through the C type structure of driving lever subassembly, can be when accomplishing the action of transmission action bars 1, can also occupy littleer gearbox casing inner space, opening part in the middle of the C type structure can make things convenient for arranging of other parts in the gearbox casing, and the structure of this kind of frame shape range is also not big when the motion, just so can effectual reduction driving lever subassembly holistic occupation space, and the motion is simple, the atress mode is single, the installation is also more convenient with the maintenance, it is required to explain, first diaphragm 21 and second diaphragm 22 are platelike structure, and the face of first diaphragm 21 and second diaphragm 22 all is perpendicular with pivot 23, it can also reduce the driving lever subassembly when the motion influence is lower to peripheral other parts when guaranteeing driving lever subassembly intensity to set up like this, the invasion space is littleer during the motion.
In some embodiments, the first and second transverse plates 21 and 22 may be rod-shaped structures as long as the movement of the operating rod 1 can be stably transmitted to the push rod assembly.
With continued reference to fig. 1 and 2, the pawl locking assembly includes a pushing block 31, a pawl 32 and a ratchet wheel 33, the ratchet wheel 33 is in transmission connection with the output shaft, the pawl 32 is rotatably connected to the housing of the transmission case through a torsion spring, the pawl 32 and the ratchet wheel 33 are provided with a matched tooth structure, wherein the ratchet wheel 33 is provided with a circle of teeth, the pawl 32 is provided with only one locking tooth, the pushing block 31 is connected with the pushing rod assembly, and when the pushing block 31 is pushed or pulled to the pawl 32 by the pushing rod assembly, the pawl 32 locks or unlocks the ratchet wheel 33, that is, whether the teeth on the pawl 32 are engaged with the teeth on the ratchet wheel 33 is controlled through the movement of the pushing block 31.
In some embodiments, the pushing block 31 is provided with the arc-shaped surface structure 311 towards one side of the pawl 32, the pawl 32 is provided with the guide inclined surface 321 towards one side of the pushing block 31, and through the arrangement of the arc-shaped surface structure 311 and the guide inclined surface 321, the motion fit between the pushing block 31 and the pawl 32 can be smoother, the abrasion between the pawl 32 and the pushing block 31 is reduced, the service life of the whole parking mechanism is prolonged, and the maintenance cost in the later period is reduced.
In a further embodiment, the pawl 32 is provided with an accommodating recessed structure 322 engaged with the pushing block 31, so that when the pushing block 31 pushes the pawl 32 to block the ratchet wheel 33, the pushing block 31 is less likely to disengage from the pawl 32 by using the accommodating recessed structure 322, thereby achieving the anti-disengaging effect.
Continuing to refer to fig. 1, the second sleeve 34 is coaxially sleeved outside the push block 31, the push block 31 is close to or far away from the pawl 32 along the axial direction of the second sleeve 34, the second sleeve 34 is arranged on a shell of the gearbox or other fixed parts, and through the arrangement of the second sleeve 34, the push block 31 can be effectively ensured to move along a straight line, so that the operation of the pawl locking assembly is more stable and smooth, and the abrasion between the push block 31 and the pawl 32 is more uniform.
In some embodiments, the push block 31 is provided with a contact section 312 matched with the inner diameter of the second sleeve 34, the push block 31 is slidably connected with the second sleeve 34 through the contact section 312, the contact section 312 is of a cylindrical structure, the diameter of the contact section 312 is the same as the inner diameter of the second sleeve 34, and the contact section 312 and the second sleeve 34 are in clearance fit, so that the push block 31 can be ensured to slide back and forth in the same straight line, and meanwhile, the resistance and the friction are reduced.
With continued reference to fig. 1 and 2, the push rod assembly includes a transmission rod 25, the transmission rod 25 is a C-shaped rod, one end of the C-shaped rod is a driving section 29, the driving section 29 is used for installing a push block 31, an opening of the C-shaped rod is used for avoiding the second sleeve 34, and the opening of the C-shaped rod can avoid not only the second sleeve 34 but also other internal structures of the gearbox.
In some embodiments, the other end of the C-shaped rod is the connecting section 26, the connecting section 26 bends towards the second transverse plate 22, the second transverse plate 22 is provided with a through hole 27 matched with the end of the connecting section 26, the end of the connecting section 26 is rotatably connected with the second transverse plate 22 through the through hole 27, the connecting section 26 and the driving section 29 are correspondingly arranged at the two ends of the C-shaped rod, so that when the pushing rod assembly applies force to the pushing block 31, the force application point is closer to the position of the pushing block 31, the locking and unlocking movement of the pushing block 31 is more stable, and the force application mode is more reasonable.
In a further embodiment, a spring 28 is disposed on the driving section 29, the driving section 29 is connected to a pushing block 31 through the spring 28, the driving section 29 is slidably inserted into the pushing block 31, the driving section 29 is parallel to the axis of the second sleeve 34, wherein the spring 28 may be a column spring or a leaf spring, when the spring 28 is a column spring, the column spring may be sleeved on the driving section 29, a spring seat fixed at one end of the column spring is disposed on the driving section 29, and the other end of the column spring is connected to the pushing block 31, when the spring 28 is a leaf spring, the leaf spring may be disposed at an end of the driving section 29 at an intermediate point, and both ends of the leaf spring are connected to the pushing block 31.
The present disclosure also provides a gearbox comprising a parking mechanism as described above.
The specific implementation manner and the implementation principle are the same as those of the above embodiment, and can bring the same or similar technical effects, and are not described in detail herein, and reference may be made to the description of the above embodiment of the parking mechanism for a transmission.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be 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 foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. 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 disclosure. Thus, the present disclosure 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 (10)
1. A parking mechanism for a transmission, comprising:
the pawl locking assembly is used for locking or unlocking an output shaft of the gearbox;
the operating rod (1) is used for controlling the pawl locking assembly to complete locking and unlocking work; and
the transmission device comprises a shifting lever assembly and a push rod assembly, the shifting lever assembly comprises a first transverse plate (21), a second transverse plate (22), a rotating shaft (23) and a first sleeve (24), the first sleeve (24) is vertically arranged on the shell of the transmission, the first sleeve (24) is sleeved on the rotating shaft (23), one end of the first transverse plate (21) and one end of the second transverse plate (22) are vertically fixed on two sides of the rotating shaft (23) correspondingly, the first transverse plate (21), the second transverse plate (22) and the rotating shaft (23) are connected to form a C-shaped structure, the operating rod (1) is arranged at one end of the first transverse plate (21) far away from the rotating shaft (23), one end of the push rod assembly is hinged to one side, away from the rotating shaft (23), of the second transverse plate (22), and the other end of the push rod assembly is connected with the pawl locking assembly.
2. The parking mechanism for the gearbox is characterized in that the pawl locking assembly comprises a pushing block (31), a pawl (32) and a ratchet wheel (33), the ratchet wheel (33) is in transmission connection with an output shaft, the pawl (32) is rotationally connected to a shell of the gearbox through a torsion spring, matched tooth structures are arranged on the pawl (32) and the ratchet wheel (33), the pushing block (31) is connected with the pushing rod assembly, and when the pushing block (31) is pushed or pulled to the pawl (32) by the pushing rod assembly, the pawl (32) locks or unlocks the ratchet wheel (33).
3. The parking mechanism for the gearbox according to claim 2, characterized in that the side of the push block (31) facing the pawl (32) is provided with an arc-shaped surface structure (311), and the side of the pawl (32) facing the push block (31) is provided with a guide slope (321).
4. The parking mechanism for the gearbox according to claim 2, characterized in that the pawl (32) is provided with a receiving recess structure (322) which is matched with the push block (31).
5. The parking mechanism for the gearbox according to claim 2, characterized in that a second sleeve (34) is coaxially sleeved on the outer side of the push block (31), and the push block (31) is close to or far away from the pawl (32) along the axial direction of the second sleeve (34).
6. The parking mechanism for the gearbox according to claim 5, characterized in that the push block (31) is provided with a contact section (312) matched with the inner diameter of the second sleeve (34), and the push block (31) is connected with the second sleeve (34) in a sliding mode through the contact section (312).
7. The parking mechanism for the gearbox according to claim 5, wherein the push rod assembly comprises a transmission rod (25), the transmission rod (25) is a C-shaped rod, one end of the C-shaped rod is a driving section (29), the driving section (29) is used for installing the push block (31), and an opening of the C-shaped rod is used for avoiding the second sleeve (34).
8. The parking mechanism for the gearbox is characterized in that the other end of the C-shaped rod is a connecting section (26), the connecting section (26) is bent towards the second transverse plate (22), a through hole (27) matched with the end part of the connecting section (26) is formed in the second transverse plate (22), and the end part of the connecting section (26) is rotatably connected with the second transverse plate (22) through the through hole (27).
9. The parking mechanism for the gearbox is characterized in that a spring (28) is arranged on the driving section (29), the driving section (29) is connected with the pushing block (31) through the spring (28), the driving section (29) is in sliding insertion connection with the pushing block (31), and the driving section (29) is parallel to the axis of the second sleeve (34).
10. A gearbox comprising a parking mechanism for a gearbox according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122519489.1U CN216200428U (en) | 2021-10-19 | 2021-10-19 | Parking mechanism for transmission and transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122519489.1U CN216200428U (en) | 2021-10-19 | 2021-10-19 | Parking mechanism for transmission and transmission |
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| Publication Number | Publication Date |
|---|---|
| CN216200428U true CN216200428U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122519489.1U Active CN216200428U (en) | 2021-10-19 | 2021-10-19 | Parking mechanism for transmission and transmission |
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| CN (1) | CN216200428U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241655A (en) * | 2023-05-08 | 2023-06-09 | 盛瑞传动股份有限公司 | Parking structure and gearbox |
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- 2021-10-19 CN CN202122519489.1U patent/CN216200428U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241655A (en) * | 2023-05-08 | 2023-06-09 | 盛瑞传动股份有限公司 | Parking structure and gearbox |
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