CN112879559B - Shift lock device - Google Patents
Shift lock device Download PDFInfo
- Publication number
- CN112879559B CN112879559B CN202110212861.6A CN202110212861A CN112879559B CN 112879559 B CN112879559 B CN 112879559B CN 202110212861 A CN202110212861 A CN 202110212861A CN 112879559 B CN112879559 B CN 112879559B
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- auxiliary
- gear
- piece
- locking piece
- main
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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
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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
- F16H63/32—Gear shift yokes, e.g. shift forks
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses a gear-shifting locking device, which comprises a shifting fork shaft, a main gear locking piece and an auxiliary gear locking piece, wherein the main gear locking piece and the auxiliary gear locking piece are used for axially locking the shifting fork shaft; the shifting fork shaft can be locked by the main gear locking piece and the auxiliary gear locking piece, so that the gear shifting fork stays at a certain gear position, the locking stability of the gear is high, and the neutral gear can be ensured not to jump; when the driving force of the outside on the shifting fork shaft exceeds a specific value, the main gear locking piece is unlocked and synchronously drives the auxiliary gear locking piece to unlock, the two gear locking pieces are unlocked and linked, the axial driving force required by the shifting fork shaft during unlocking is increased, the auxiliary gear locking piece is not dependent on the axial driving force of the shifting fork shaft during unlocking, and the matching relation between the auxiliary gear locking piece and the shifting fork shaft is simplified.
Description
Technical Field
The invention relates to the technical field of transmissions, in particular to a gear shifting locking device.
Background
The existing transmission usually realizes axial locking of a shift fork shaft through a lock gear piece matched with a lock gear groove, and the structure ensures that the locking stability of the shift fork shaft is weaker when the transmission is in a neutral state, so that the problem of gear jumping is easy to occur.
Based on the above problems, there is a need for a gear shift locking device, which realizes gear locking through a driving gear locking member and an auxiliary gear locking member, improves gear locking stability and reliability, and ensures that a neutral gear does not jump.
Disclosure of Invention
In view of this, the present invention provides a gear shift locking device, which realizes gear locking through a driving gear locking member and an auxiliary gear locking member, improves stability and reliability of gear locking, and ensures that a neutral gear does not jump.
The gear shifting locking device comprises a shifting fork shaft, a main gear locking piece and an auxiliary gear locking piece, wherein the main gear locking piece and the auxiliary gear locking piece are used for axially locking the shifting fork shaft, and the main gear locking piece and the auxiliary gear locking piece are in linkage fit, so that the main gear locking piece synchronously drives the auxiliary gear locking piece to synchronously unlock the auxiliary gear locking piece in the process of unlocking the shifting fork shaft.
Furthermore, the main gear locking piece and the auxiliary gear locking piece can be slidably mounted on the machine shell along a direction perpendicular to the shifting fork shaft, a neutral gear locking groove matched with the main gear locking piece and an auxiliary gear locking groove matched with the auxiliary gear locking piece are formed in the shifting fork shaft, and the main gear locking piece and the auxiliary gear locking piece synchronously slide into the corresponding gear locking grooves.
Further, the head of the main lock gear piece and the neutral lock gear groove are of triangular structures matched with each other, the auxiliary lock gear groove is an annular groove formed in the excircle of the shift fork shaft, the width of the auxiliary lock gear groove is larger than that of the auxiliary lock gear piece, when the main lock gear piece completely falls into the neutral lock gear groove, the auxiliary lock gear piece falls into the auxiliary lock gear groove, and the two axial sides of the auxiliary lock gear piece are not in contact with the axial side wall of the auxiliary lock gear groove.
Furthermore, the auxiliary lock catch groove is attached with elastic pieces capable of elastically stretching in the axial direction on two sides in the axial direction, and when the main lock catch piece completely falls into the neutral lock catch groove, two sides of the auxiliary lock catch piece are attached with the elastic pieces.
Furthermore, a driving deflector rod is connected to the main gear locking piece, a driven deflector rod is connected to the auxiliary gear locking piece, and when the main gear locking piece completely falls into the neutral gear locking groove, the driving deflector rod is located below the driven deflector rod and attached to the lower portion of the driven deflector rod.
Furthermore, the outer circle of the shifting fork shaft is provided with a friction plane, the friction plane is located on two axial sides of the auxiliary lock catch groove, and the auxiliary lock catch part has elastic force sliding towards the shifting fork shaft, so that the auxiliary lock catch part slides out of the auxiliary lock catch groove and then presses on the friction plane to lock the shifting fork shaft in an auxiliary mode.
Furthermore, the shell is provided with a main sliding hole, the main lock stop piece can be slidably installed in the main sliding hole, a driving elastic piece is arranged between the main lock stop piece and the bottom of the main sliding hole, and the driving elastic piece has elastic force enabling the main lock stop piece to slide outwards and press on the shifting fork shaft.
Furthermore, an auxiliary sliding hole is formed in the machine shell, the auxiliary lock catch piece can be slidably mounted in the auxiliary sliding hole, an auxiliary elastic piece is arranged between the auxiliary lock catch piece and the bottom of the auxiliary sliding hole, and the auxiliary elastic piece has elastic force enabling the auxiliary lock catch piece to slide outwards and press on the shifting fork shaft.
Furthermore, sliding grooves are formed in the main sliding hole and the auxiliary sliding hole in the lateral direction, the sliding grooves extend along the sliding direction of the main gear locking piece, and the driving deflector rod and the driven deflector rod extend out of the corresponding sliding grooves and can be in contact with each other.
Furthermore, a buffer pad used for contacting the bottom of the driven deflector rod is arranged on the driving deflector rod.
The invention has the beneficial effects that:
the shifting fork shaft can be locked by the main gear locking piece and the auxiliary gear locking piece, so that the gear shifting fork stays at a certain gear position, the locking stability of the gear is high, and the neutral gear can be ensured not to jump; when the external driving force on the shifting fork shaft exceeds a specific value, the main gear locking piece is unlocked and synchronously drives the auxiliary gear locking piece to unlock, the two gear locking pieces are unlocked and linked, the axial driving force required by the shifting fork shaft during unlocking is increased, and the auxiliary gear locking piece is unlocked without depending on the axial driving force of the shifting fork shaft, so that the matching relation between the auxiliary gear locking piece and the shifting fork shaft is simplified; in addition, the auxiliary gear locking groove is matched with the friction plane, so that the idle gear and other gears can be locked, and the locking stability of the shift fork shaft is further improved.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic structural view of the present invention;
Detailed Description
As shown in the drawings, the gear shift locking device in the embodiment includes a shift fork shaft 1, and a main gear locking piece 2 and an auxiliary gear locking piece 3 for axially locking the shift fork shaft, where the main gear locking piece and the auxiliary gear locking piece are in linkage fit, so that the main gear locking piece synchronously drives the auxiliary gear locking piece during unlocking the shift fork shaft, and the auxiliary gear locking piece is synchronously unlocked. As shown in fig. 1, the shift fork shaft is axially slidably mounted on the housing, and the shift fork shaft can be locked by the main gear locking member 2 and the auxiliary gear locking member 3, so that the shift fork stays at a certain gear position, the locking stability of the gear is high, and the neutral position can be ensured not to skip; when the external driving force on the shifting fork shaft exceeds a specific value, the main gear locking piece is unlocked and synchronously drives the auxiliary gear locking piece to unlock, the two gear locking pieces are unlocked and linked, the axial driving force required by the shifting fork shaft during unlocking is increased, and the auxiliary gear locking piece is unlocked without depending on the axial driving force of the shifting fork shaft, so that the matching relation between the auxiliary gear locking piece and the shifting fork shaft is simplified;
in this embodiment, the main gear locking piece and the auxiliary gear locking piece are slidably mounted on the housing 10 along a direction perpendicular to the fork shaft, the fork shaft is provided with a neutral gear locking groove 4 matched with the main gear locking piece and an auxiliary gear locking groove 5 matched with the auxiliary gear locking piece, and the main gear locking piece and the auxiliary gear locking piece synchronously slide into the corresponding gear locking grooves. The main lock gear slides into the neutral gear lock gear groove and corresponds to a neutral gear, and the auxiliary lock gear slides into the auxiliary lock gear groove at the moment.
In this embodiment, the head of the main lock gear piece and the neutral lock gear groove 4 are of a triangular structure matched with each other, the auxiliary lock gear groove 5 is an annular groove formed in the excircle of the shift fork shaft, the width of the auxiliary lock gear groove 5 is greater than that of the auxiliary lock gear piece, when the main lock gear piece completely falls into the neutral lock gear groove, the auxiliary lock gear piece falls into the auxiliary lock gear groove 5, and the two axial sides of the auxiliary lock gear piece are not in contact with the axial side wall of the auxiliary lock gear groove 5. As shown in fig. 1, when the shift fork shaft slides axially, the inclined surface of the neutral gear-locking groove 4 pushes the main gear-locking piece to slide upwards and disengage, because the main gear-locking piece drives the auxiliary gear-locking piece when sliding upwards, the sliding upwards of the auxiliary gear-locking piece does not depend on the power provided by the shifting fork shaft, therefore, the auxiliary lock baffle groove can be arranged into an annular groove with a simpler structure, the section of the annular groove can be a conventional rectangular opening, the arrangement of the annular groove is favorable for matching with the auxiliary lock baffle body, and the width of the auxiliary gear-locking groove is larger, so that when the main gear-locking piece completely falls into the gear-locking groove of the neutral gear, the auxiliary locking piece incompletely locks the shifting fork shaft, the shifting fork shaft can have a certain axial sliding stroke at the moment, the sliding stroke of the shifting fork shaft at the moment is utilized to drive the main gear locking piece to slide upwards and drive the auxiliary gear locking piece to slide upwards through the main gear locking piece, before the auxiliary gear locking piece contacts with the side wall of the auxiliary gear locking groove, the auxiliary gear locking piece is completely separated to complete unlocking.
In this embodiment, the elastic member 6 capable of elastically stretching in the axial direction is attached to both sides of the auxiliary lock catch groove 5 in the axial direction, and when the main lock catch completely falls into the neutral lock catch groove, both sides of the auxiliary lock catch are attached to the elastic member. The elastic piece can adopt an elastic washer or a belleville spring or other known elastic structures, the elastic piece is required to ensure that the axial elastic expansion capacity is stronger and the radial elastic expansion capacity is poorer, so that the auxiliary lock gear piece can smoothly slide into the auxiliary lock gear groove along the excircle of the elastic washer, and in addition, the elastic piece is matched with the auxiliary lock gear piece to provide axial resistance for the shifting fork shaft so as to improve the axial locking reliability of the shifting fork shaft.
In this embodiment, the main lock stop is connected with a driving lever 7, the auxiliary lock stop is connected with a driven lever 8, and when the main lock stop completely falls into the neutral lock stop groove, the driving lever is located below the driven lever and attached to the lower side of the driven lever. As shown in fig. 1, the driving lever is attached to the driven lever, and the auxiliary lock gear has a certain sliding stroke, so that the shift fork shaft drives the driving lock gear to slide upwards when sliding axially and acts on the driven lever to drive the auxiliary lock gear, thereby improving the response speed of the auxiliary lock gear.
In this embodiment, place 1 excircle department of declutch shift shaft is provided with friction plane 9, friction plane is located supplementary lock shelves groove axial both sides, supplementary lock shelves piece has to the gliding elastic force of declutch shift shaft to press on friction plane after making supplementary lock shelves piece roll-off supplementary lock shelves groove with supplementary locking to the declutch shift shaft. The friction plane is provided with friction grains or a frosted surface, when other gears are shifted from the neutral position, the auxiliary gear locking piece is pressed on the friction plane, and the auxiliary locking of the shifting fork shaft is realized through the axial friction force of the shifting fork shaft.
In this embodiment, the casing has a main sliding hole, the main lock stop member is slidably mounted in the main sliding hole, and an active elastic member 11 is disposed between the main lock stop member and the bottom of the main sliding hole, and the active elastic member has an elastic force that causes the main lock stop member to slide outward and press on the fork shaft. The driving elastic piece is a cylindrical spiral spring, and the main lock gear piece is always pressed on the shifting fork shaft through the driving elastic piece, so that the stability of the shifting fork shaft during locking is favorably improved.
In this embodiment, the casing has an auxiliary sliding hole, the auxiliary lock stop member is slidably mounted in the auxiliary sliding hole, an auxiliary elastic member 12 is disposed between the auxiliary lock stop member and the bottom of the auxiliary sliding hole, and the auxiliary elastic member has an elastic force for making the auxiliary lock stop member slide outward and press on the shift fork shaft. The auxiliary elastic piece is a cylindrical spiral spring, and the auxiliary lock blocking piece is pressed on the shifting fork shaft all the time through the auxiliary elastic piece, so that the stability of the shifting fork shaft during locking is favorably improved.
In this embodiment, the main sliding hole and the auxiliary sliding hole are laterally provided with sliding grooves, the sliding grooves extend along the sliding direction of the main lock catch, and the driving shift lever and the driven shift lever extend through the corresponding sliding grooves and can be in contact with each other. The sliding directions of the main gear locking piece and the auxiliary gear locking piece are the same, the two vertical sliding grooves are axially opposite, the driving shifting rod penetrates through the corresponding vertical sliding groove and then is located below the driven shifting rod, and when the main gear locking piece slides up and down, the driving shifting rod can slide along the vertical sliding grooves in an adaptive mode.
In this embodiment, the driving lever is provided with a cushion pad 13 for contacting with the bottom of the driven lever. The cushion pad can adopt a rubber pad, and the collision of the driving deflector rod and the driven deflector rod can be prevented through the cushion pad.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (7)
1. A shift lock device characterized by: the automatic unlocking device comprises a shifting fork shaft, a main gear locking piece and an auxiliary gear locking piece, wherein the main gear locking piece and the auxiliary gear locking piece are used for axially locking the shifting fork shaft, and are in linkage fit, so that the main gear locking piece and the auxiliary gear locking piece are synchronously driven by the main gear locking piece in the process of unlocking the shifting fork shaft, and the auxiliary gear locking piece is synchronously unlocked;
the main gear locking piece and the auxiliary gear locking piece can be slidably mounted on the shell along a direction perpendicular to the shifting fork shaft, a neutral gear locking groove matched with the main gear locking piece and an auxiliary gear locking groove matched with the auxiliary gear locking piece are formed in the shifting fork shaft, and the main gear locking piece and the auxiliary gear locking piece synchronously slide into the corresponding gear locking grooves;
the head of the main lock gear piece and the neutral lock gear groove are of triangular structures matched with each other, the auxiliary lock gear groove is an annular groove formed in the excircle of the shift fork shaft, the width of the auxiliary lock gear groove is larger than that of the auxiliary lock gear piece, when the main lock gear piece completely falls into the neutral lock gear groove, the auxiliary lock gear piece falls into the auxiliary lock gear groove, and the two axial sides of the auxiliary lock gear piece are not contacted with the axial side wall of the auxiliary lock gear groove;
the main gear locking piece is connected with a driving deflector rod, the auxiliary gear locking piece is connected with a driven deflector rod, and when the main gear locking piece completely falls into the neutral gear locking groove, the driving deflector rod is positioned below the driven deflector rod and attached to the lower portion of the driven deflector rod.
2. The shift lock device of claim 1, wherein: the auxiliary lock catch groove is axially and elastically telescopic, elastic pieces are attached to two sides of the auxiliary lock catch groove in the axial direction, and when the main lock catch piece completely falls into the neutral lock catch groove, two sides of the auxiliary lock catch piece are attached to the elastic pieces.
3. The shift lock device of claim 1, wherein: the outer circle of the shifting fork shaft is provided with a friction plane, the friction plane is located on two axial sides of the auxiliary lock catch groove, and the auxiliary lock catch part has elastic force sliding towards the shifting fork shaft, so that the auxiliary lock catch part slides out of the auxiliary lock catch groove and then presses the friction plane to assist locking of the shifting fork shaft.
4. The shift lock device according to claim 1, characterized in that: the shell is provided with a main sliding hole, the main lock stop piece can be slidably arranged in the main sliding hole, a driving elastic piece is arranged between the main lock stop piece and the bottom of the main sliding hole, and the driving elastic piece has elastic force which enables the main lock stop piece to slide outwards and press on the shifting fork shaft.
5. The shift lock device of claim 4, wherein: the shell is provided with an auxiliary sliding hole, the auxiliary lock catch piece can be slidably arranged in the auxiliary sliding hole, an auxiliary elastic piece is arranged between the auxiliary lock catch piece and the bottom of the auxiliary sliding hole, and the auxiliary elastic piece has elastic force enabling the auxiliary lock catch piece to slide outwards and press on the shifting fork shaft.
6. The shift lock device of claim 5, wherein: the main sliding hole and the auxiliary sliding hole are laterally provided with sliding grooves, the sliding grooves extend along the sliding direction of the main gear locking piece, and the driving deflector rod and the driven deflector rod extend through the corresponding sliding grooves and can be in contact with each other.
7. The shift lock device of claim 1, wherein: and a buffer pad used for contacting the bottom of the driven deflector rod is arranged on the driving deflector rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110212861.6A CN112879559B (en) | 2021-02-25 | 2021-02-25 | Shift lock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110212861.6A CN112879559B (en) | 2021-02-25 | 2021-02-25 | Shift lock device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112879559A CN112879559A (en) | 2021-06-01 |
| CN112879559B true CN112879559B (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110212861.6A Active CN112879559B (en) | 2021-02-25 | 2021-02-25 | Shift lock device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112879559B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10138448A1 (en) * | 2001-08-04 | 2003-02-13 | Volkswagen Ag | Shift lock device |
| CN105065635A (en) * | 2015-07-24 | 2015-11-18 | 重庆隆旺机电有限责任公司 | Main reducer assembly with automatic gear shifting function |
| CN205806457U (en) * | 2016-07-15 | 2016-12-14 | 上海中科深江电动车辆有限公司 | Single axle gearshift mechanism of automotive transmission |
| CN208457178U (en) * | 2018-06-11 | 2019-02-01 | 西安法士特汽车传动有限公司 | A kind of speed changer stopper structure |
| DE102019207249A1 (en) * | 2019-05-17 | 2020-11-19 | Zf Friedrichshafen Ag | Locking device and gear |
| CN214063755U (en) * | 2020-12-10 | 2021-08-27 | 重庆隆旺机电有限责任公司 | Gear double-locking mechanism |
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2021
- 2021-02-25 CN CN202110212861.6A patent/CN112879559B/en active Active
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| Publication number | Publication date |
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| CN112879559A (en) | 2021-06-01 |
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