CN111927950A - Reverse gear device for preventing gear skipping - Google Patents
Reverse gear device for preventing gear skipping Download PDFInfo
- Publication number
- CN111927950A CN111927950A CN202010919859.8A CN202010919859A CN111927950A CN 111927950 A CN111927950 A CN 111927950A CN 202010919859 A CN202010919859 A CN 202010919859A CN 111927950 A CN111927950 A CN 111927950A
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- Prior art keywords
- gear
- pin
- shifting
- fork body
- limiting
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000007789 sealing Methods 0.000 claims description 8
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000009191 jumping Effects 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
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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
- F16H63/3408—Locking or disabling mechanisms the locking mechanism being moved by the final actuating mechanism
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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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- 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
- F16H2063/3076—Selector shaft assembly, e.g. supporting, assembly or manufacturing of selector or shift shafts; Special details thereof
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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
- F16H2063/3093—Final output elements, i.e. the final elements to establish gear ratio, e.g. dog clutches or other means establishing coupling to shaft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses a gear-skipping prevention reverse gear device in the technical field of reverse gears, which comprises a shell, an output shaft, a gear shifting shaft, a shifting fork body and a shifting block, wherein a forward gear and a reverse gear are sleeved on the output shaft, a combination gear which can be combined with the forward gear or the reverse gear is connected to the output shaft through a spline, a shifting fork is clamped on the combination gear, and the shifting fork is connected to the shifting fork body; two limiting stop blocks are respectively arranged on two sides of one surface of the shifting fork body, which is in contact with the shifting block, two limiting holes are also formed in the shifting fork body, each limiting hole is formed between the two limiting stop blocks, a limiting pin is arranged in each limiting hole, a jacking pin seat is arranged on the shell, which corresponds to the limiting hole, a jacking pin pressure spring is arranged in each jacking pin seat, and a jacking pin is arranged at the end of each jacking pin seat; compared with the prior art, the gear shifting device has the advantages that the shifting fork body is locked and limited by the locking pin and the limiting pin, so that the gear is locked more stably, the gear is not disengaged, and the gear shifting device is safer.
Description
Technical Field
The invention relates to the technical field of reverse gears, in particular to a reverse gear capable of preventing gear jumping.
Background
The reverse gear is a device for realizing reverse running of vehicles such as motor tricycles, four-wheel dune buggy and the like. The existing reverse gear with a gear jumping prevention mechanism comprises a shell, an output shaft, a gear shifting shaft, a shifting fork body and a shifting block, wherein a forward gear and a reverse gear are sleeved on the output shaft, a combination gear capable of being combined with the forward gear or the reverse gear is connected to the output shaft through a spline, a shifting fork is clamped on the combination gear and connected to the shifting fork body, the central line of the gear shifting shaft is perpendicular to the central line of the output shaft, the shifting fork body is sleeved on the gear shifting shaft in an empty mode, the shifting block is sleeved on the gear shifting shaft through the spline, two positioning grooves are formed in the left side of the shifting fork body, a locking pin tightly pressed on the positioning grooves is arranged on the shell, a pressure spring is arranged in the locking pin, and the locking pin is tightly pressed on the positioning grooves through the pressure spring, because what keep off the position locking and adopt is that the locking round pin card goes into the locking in the constant head tank, the locking dynamics is limited, only leans on the elasticity of pressure spring, under the circumstances such as vehicle load increase, the slope of going increase, the easy phenomenon of taking off the fender that appears in the reverse gear ware, the reverse gear ware is under the too big circumstances of load promptly, the combination gear is under the thrust situation that receives the gear that advances or reverse gear, causes the pressure spring back pressure, causes the pressure spring compression back to can't push down the constant head tank, and then causes the incident easily. The existing reverse gear device also has the problems of unreasonable structural design and inconvenient installation and maintenance.
In summary, the applicant proposes a reverse gear device for preventing gear hopout.
Disclosure of Invention
The anti-trip reverse gear device solves the problems that a reverse gear device in the prior art is not locked tightly and is easy to trip.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a reverse gear device for preventing gear jumping comprises a shell, an output shaft, a gear shifting shaft, a shifting fork body and a shifting block, wherein a forward gear and a reverse gear are sleeved on the output shaft in a hollow manner, a combined gear capable of being combined with the forward gear or the reverse gear is connected onto the output shaft through a spline, a shifting fork is clamped on the combined gear and connected onto the shifting fork body, the gear shifting shaft is arranged on the shifting fork body, the central line of the gear shifting shaft is perpendicular to the central line of the output shaft, the shifting fork body is sleeved on the gear shifting shaft in a hollow manner, the shifting block is sleeved on the gear shifting shaft through the spline, two positioning grooves are formed in the left side of the shifting fork body, a locking pin tightly pressed on the positioning grooves is arranged on the shell, a pressure spring is arranged in the locking pin, the locking pin is tightly pressed on the positioning grooves through the pressure spring, two limit stop blocks are respectively arranged on two sides of one surface, which, a limit pin is arranged in the limit hole, a knock pin seat is arranged on the shell corresponding to the limit hole, a knock pin pressure spring is arranged in the knock pin seat, a knock pin is arranged at the end of the knock pin seat, and the knock pin is tightly pressed in the limit hole through the knock pin pressure spring; the lower part of the contact surface of the shifting block and the limiting pin is in a boss shape;
when the gear is switched from a forward gear to a backward gear, a pedal is treaded to drive a gear shifting shaft to rotate, the gear shifting shaft drives a shifting block to rotate, limit stops are arranged at two ends of a shifting fork body, the shifting block rotates to drive the shifting fork body to rotate through the limit stops, a locking pin on a shell can be tightly pressed on a positioning groove, the shifting block can firstly push a limit pin into a limit hole on the way of moving from the limit stop at one side of the shifting fork body to the limit stop at the other side and then touch the limit stop at the other side, the shifting fork body is driven to rotate through the limit stops, the ejector pin can generate relative displacement with the shifting fork body when the shifting fork body rotates, the ejector pin is aligned with the limit hole at the other side from the limit hole at one side, the ejector pin in the limit hole at the other side is pushed out to limit the shifting block, so that the gear is limited and prevented from being shifted, and double locking of the locking pin and the limit, the gear locking of the reverse gear device is more fastened and safe, and the phenomena of gear disengagement and gear jumping cannot occur.
Further limiting, the cross section of the lower part of the poking block is in a hexagonal boss shape;
further limiting, the ejector pin seat is fixed with the shell through threads; through more firm of screw thread fastening, life is longer.
Further limiting, a gear shifting pedal is arranged on the gear shifting shaft;
further limiting, a sealing gasket is arranged on the top pin seat; and a sealing gasket is arranged on the ejector pin seat to increase the sealing performance of the shell.
The limit pin and the ejector pin are cylinders, the heads of the limit pin and the ejector pin are provided with chamfers, and the tail of the ejector pin is matched with the inner diameter of a pressure spring of the ejector pin; the head of the limit pin is provided with the chamfer, so that the shifting block can more smoothly jack the limit pin into the limit hole, the operation is smoother, and the jacking pin pressure spring are arranged and fixed more stably.
Compared with the prior art, the gear shifting device has the advantages that the shifting fork body is locked and limited by the locking pin and the limiting pin, so that the gear is locked more stably, the gear is not disengaged, and the gear shifting device is safer.
Drawings
FIG. 1 is a front view of the interior of a housing;
FIG. 2 is a left side view of the interior of the housing;
FIG. 3 is a front view of the yoke body;
FIG. 4 is a left side view of the yoke body;
FIG. 5 is a perspective view of the dial block;
FIG. 6 is a front view of the dial block;
FIG. 7 is a simplified schematic diagram of a spacing pin;
FIG. 8 is a schematic view of a simple construction of the knock pin;
fig. 9 is a schematic cross-sectional view of the lower portion of the dial block.
The designations in the figures correspond respectively to: 1-output shaft, 2-gear shifting shaft, 3-shifting fork body, 31-positioning groove, 32-limiting hole, 33-limiting stop, 34-limiting pin, 4-shifting block, 5-forward gear, 6-reverse gear, 7-combination gear, 8-shifting fork, 9-locking pin, 10-ejector pin seat, 11-gear shifting pedal, 12-sealing washer and 13-ejector pin.
Detailed Description
In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.
Example (b):
as shown in fig. 1-9, a reverse gear device for preventing gear skip comprises a housing, an output shaft 1, a gear shift shaft 2, a shift fork body 3 and a shift block 4, wherein a forward gear 5 and a reverse gear 6 are sleeved on the output shaft 1, a combination gear 7 capable of combining with the forward gear 5 or the reverse gear 6 is connected on the output shaft 1 in a sliding manner through splines, a shift fork 8 is clamped on the combination gear 7, the shift fork 8 is connected on the shift fork body 3, the central line of the gear shift shaft 2 is perpendicular to the central line of the output shaft 1, a cylindrical shaft section is arranged on the gear shift shaft 2, a circular mounting hole matched with the cylindrical shaft section is opened at the upper end of the shift fork body 3, the shift fork body 3 is sleeved on the cylindrical section of the gear shift shaft 2 through the circular mounting hole, a flat square shaft section is further arranged on the gear shift shaft 2, a flat mounting hole matched with the flat square shaft section is opened at the upper end of the shift block 4, the shift block 4 is fixed on the flat shaft section sleeved on the gear shift shaft through the flat square mounting hole, the left side of the shifting fork body 3 is provided with two positioning grooves 31, a locking pin 9 which is tightly pressed on the positioning grooves 31 is arranged on a left side shell, a pressure spring is arranged in the locking pin 9, the locking pin 9 is tightly pressed on the positioning grooves 31 through the pressure spring, two limit stops 33 are respectively arranged on two sides of one surface, in contact with the shifting block 4, of the shifting fork body 3, two limit holes 32 are further arranged on the shifting fork body 3, the limit holes 32 are arranged between the two limit stops 33, limit pins 34 are arranged in the limit holes 32, a top pin seat 10 is arranged on the shell at a position corresponding to the limit holes 32, a top pin pressure spring is arranged in the top pin seat 10, a top pin 13 is arranged at the end of the top pin seat 10, and the top pin 13; the cross section of the lower part of the contact surface of the poking block 4 and the limiting pin is in a hexagonal boss shape; the ejector pin seat 10 is fixed with the shell through threads; the gear shifting shaft 2 is also provided with a gear shifting pedal 11; a sealing washer 12 is also arranged on the ejector pin seat 10; the limit pin 34 and the ejector pin 13 are both cylinders, the heads of the limit pin 34 and the ejector pin 13 are both provided with chamfers, and the tail of the ejector pin 13 is matched with the inner diameter of the ejector pin pressure spring.
When the gear is switched from the forward gear to the backward gear, the gear shifting pedal 11 is treaded to drive the gear shifting shaft 2 to rotate, the gear shifting shaft 2 drives the shifting block 4 to rotate, the limit stops 33 are arranged at the two ends of the shifting block 3, the shifting block 4 rotates to drive the shifting block 3 to rotate through the limit stops 33, the locking pin 9 on the shell can be tightly pressed on the positioning groove 31, the limit pin 34 is firstly pushed into the limit hole 32 by the boss surface of the shifting block 4 on the way that the shifting block 4 moves from the limit stop 33 at one side of the shifting block 3 to the limit stop 33 at the other side, then the limit stop 33 at the other side is touched, the shifting block 4 is driven to rotate through the limit stop 33, the ejector pin 13 and the shifting block 4 generate relative displacement when the shifting block 4 rotates, the ejector pin 13 is aligned with the limit hole 32 at the other side from the limit hole 32 displacement of one side, the limit pin 34 in the limit hole 32 at the other side is ejected out to limit the shifting block 4, therefore, the gear is limited to prevent gear jumping, and the locking pin 9 and the limiting pin 34 are locked doubly, so that the gear of the reverse gear device is locked more tightly and safely, and the phenomena of gear disengagement and gear jumping cannot occur; the screw thread fixing is firmer, and the service life is longer; a sealing gasket 12 is arranged on the top pin seat 10 to increase the sealing performance of the shell; the head of the limit pin 34 is provided with the chamfer, so that the toggle block 4 can more smoothly jack the limit pin 34 into the limit hole 32, the operation is smoother, and the ejector pin 13 and the ejector pin pressure spring are more stably fixed.
When shifting, the gear shift pedal 11 is stepped on, the gear shift shaft 2 rotates to drive the shifting block 4 to rotate, because the two sides of one surface of the shifting fork body 3, which is contacted with the shifting block 4, are provided with the limit stops 33, the shifting block 4 drives the shifting fork body 3 to rotate through the limit stops 33, the shifting fork body 3 rotates to shift gears, the lock pin 9 is pressed on the positioning groove 31 through the pressure spring to carry out limit locking on the shifting fork body 3, in the process that the shifting block 4 rotates from the left limit stop 33 to the right limit stop 33, the shifting block 4 firstly pushes the limit pin 34 in the limit hole 32 close to the right back into the limit hole 32 through the boss-shaped surface, then drives the shifting fork body 4 to rotate through the right limit stop 33, the ejector pin 13 and the shifting fork body 3 generate relative displacement when the shifting fork body 4 rotates, the ejector pin 13 relatively displaces from the right limit hole 32 to the left limit hole 32 to be aligned with the left limit hole 32 and ejects the limit pin 34 in the left limit hole 32, the limiting pin 34 in the limiting hole 32 on the left side is ejected out to limit and lock the toggle block 4 on the right side, and the gear shifting in the opposite direction is performed, so that the locking force of the opposite gear is further increased due to the double locking of the locking pin 9 and the limiting pin 34.
Compared with the prior art, the gear shifting device has the advantages that the shifting fork body is locked and limited by the locking pin and the limiting pin, so that the gear is locked more stably, the gear is not disengaged, and the gear shifting device is safer.
It should be noted that the left side in this document is based on the orientation in the drawings.
The anti-skip reverse gear device provided by the invention is described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a prevent reverse gear ware that jumps and keep off, includes casing, output shaft, selector shaft, the fork body and dials the piece, the empty cover has advancing gear and reverse gear on the output shaft, there is the combination gear that can combine with advancing gear or reverse gear through splined connection on the output shaft, the card is equipped with the shift fork on the combination gear, the shift fork is connected on the fork body, the central line perpendicular to of selector shaft the central line of output shaft, the empty cover of the fork body is in on the selector shaft, dial the piece and cup joint through the spline on the selector shaft, the left side of the fork body is equipped with two constant head tanks, be equipped with on the casing and compress tightly lock round pin on the constant head tank, be equipped with the pressure spring in the lock round pin, the lock round pin compresses tightly on the constant head tank through the pressure spring, its characterized in that:
two limiting stop blocks are respectively arranged on two sides of one surface of the shifting fork body, which is in contact with the shifting block, two limiting holes are also formed in the shifting fork body, the limiting holes are formed between the two limiting stop blocks, limiting pins are arranged in the limiting holes, a jacking pin seat is arranged on the shell, which corresponds to the limiting holes, a jacking pin pressure spring is arranged in the jacking pin seat, a jacking pin is arranged at the end of the jacking pin seat, and the jacking pin is tightly pressed in the limiting holes through the pressure spring; the lower part of the contact surface of the poking block and the limiting pin is in a boss shape.
2. The anti-skip reverse according to claim 1, characterized in that: the cross section of the lower part of the poking block is hexagonal.
3. The anti-skip reverse according to claim 1, characterized in that: the ejector pin seat is fixed with the shell through threads.
4. The anti-skip reverse according to claim 1, characterized in that: the gear shifting shaft is also provided with a gear shifting pedal.
5. The novel anti-kickback gear recited in claim 1, wherein: and a sealing gasket is also arranged on the ejector pin seat.
6. The anti-skip reverse according to claim 1, characterized in that: the limit pin and the ejector pin are cylinders, the head of the limit pin and the head of the ejector pin are provided with chamfers, and the tail of the ejector pin is matched with the inner diameter of an ejector pin pressure spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010919859.8A CN111927950A (en) | 2020-09-04 | 2020-09-04 | Reverse gear device for preventing gear skipping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010919859.8A CN111927950A (en) | 2020-09-04 | 2020-09-04 | Reverse gear device for preventing gear skipping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111927950A true CN111927950A (en) | 2020-11-13 |
Family
ID=73309807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010919859.8A Pending CN111927950A (en) | 2020-09-04 | 2020-09-04 | Reverse gear device for preventing gear skipping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111927950A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324029A (en) * | 2021-06-22 | 2021-08-31 | 宝鸡法士特齿轮有限责任公司 | Gear falling prevention structure of control assembly |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202510699U (en) * | 2012-02-28 | 2012-10-31 | 长城汽车股份有限公司 | Reverse gear lock for manual transmission |
| CN202790495U (en) * | 2012-06-29 | 2013-03-13 | 浙江吉利汽车研究院有限公司杭州分公司 | Reverse gear self-locking device of automobile |
| CN203532635U (en) * | 2013-09-14 | 2014-04-09 | 吴先友 | Gear jumping prevention reverse gear device assembly |
| CN105546111A (en) * | 2016-01-29 | 2016-05-04 | 江苏林海动力机械集团公司 | Engine gearbox external gear shifting locking device |
| CN208535145U (en) * | 2018-06-15 | 2019-02-22 | 中国第一汽车股份有限公司 | A kind of dynamic shifter of transmission of novel six block |
| CN208935358U (en) * | 2018-07-17 | 2019-06-04 | 重庆川威动霸机械有限公司 | The anti-off-gear reverse gear of motor tricycle |
| CN110030355A (en) * | 2019-04-17 | 2019-07-19 | 西南大学 | The self-adapting automatic gear shift device of double overdrive clutch main shafts output of planetary system input |
| CN212273025U (en) * | 2020-09-04 | 2021-01-01 | 重庆鑫永舟机械制造有限公司 | Reverse gear device for preventing gear skipping |
-
2020
- 2020-09-04 CN CN202010919859.8A patent/CN111927950A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202510699U (en) * | 2012-02-28 | 2012-10-31 | 长城汽车股份有限公司 | Reverse gear lock for manual transmission |
| CN202790495U (en) * | 2012-06-29 | 2013-03-13 | 浙江吉利汽车研究院有限公司杭州分公司 | Reverse gear self-locking device of automobile |
| CN203532635U (en) * | 2013-09-14 | 2014-04-09 | 吴先友 | Gear jumping prevention reverse gear device assembly |
| CN105546111A (en) * | 2016-01-29 | 2016-05-04 | 江苏林海动力机械集团公司 | Engine gearbox external gear shifting locking device |
| CN208535145U (en) * | 2018-06-15 | 2019-02-22 | 中国第一汽车股份有限公司 | A kind of dynamic shifter of transmission of novel six block |
| CN208935358U (en) * | 2018-07-17 | 2019-06-04 | 重庆川威动霸机械有限公司 | The anti-off-gear reverse gear of motor tricycle |
| CN110030355A (en) * | 2019-04-17 | 2019-07-19 | 西南大学 | The self-adapting automatic gear shift device of double overdrive clutch main shafts output of planetary system input |
| CN212273025U (en) * | 2020-09-04 | 2021-01-01 | 重庆鑫永舟机械制造有限公司 | Reverse gear device for preventing gear skipping |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324029A (en) * | 2021-06-22 | 2021-08-31 | 宝鸡法士特齿轮有限责任公司 | Gear falling prevention structure of control assembly |
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