CN107709846B - Gear shifting device - Google Patents
Gear shifting device Download PDFInfo
- Publication number
- CN107709846B CN107709846B CN201680034473.0A CN201680034473A CN107709846B CN 107709846 B CN107709846 B CN 107709846B CN 201680034473 A CN201680034473 A CN 201680034473A CN 107709846 B CN107709846 B CN 107709846B
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- China
- Prior art keywords
- bolt
- shift
- restricting member
- movement restricting
- outer diameter
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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
Abstract
A shift device (10) is provided with shift levers (R1-R5), a 3 rd shift arm (17) fixed on the shift lever (R4), and a bolt (30) for fixing the 3 rd shift arm (17) on the shift lever (R4), and is used for operating the speed change of a transmission, wherein the 3 rd shift arm (17) is provided with a mounting hole (17b) for screwing and mounting the bolt (30), and a snap ring (40) for limiting the bolt (30) to move outwards is mounted on a position, which is axially outwards relative to a certain part of the mounted bolt (30), in the mounting hole (17 b).
Description
Technical Field
The present invention relates to a shifting device for shifting a transmission, and more particularly to a technique for fixing a fixing portion to a shift lever of the shifting device.
Background
Conventionally, in a shifting apparatus for shifting a transmission, a technique is known in which a shift fork engaged with a sleeve of the transmission is coupled to a shift fork lever (shift lever) by a bolt (see, for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2013-199964
Disclosure of Invention
Problems to be solved by the invention
A plurality of fixing portions such as a shift fork and a shift block for moving the shift lever are attached to the shift lever of the shift device. The fixing part is for example in many cases bolted to the shift lever.
Since the shift device is housed in the case of the transmission, if the bolt for attaching the fixing portion is loosened and removed, there is a possibility that the gear of the transmission or the like is damaged.
In order to prevent the bolt from loosening and from falling out into the housing, a hole is formed in the head of the bolt, and a wire is inserted through the hole and engaged with the shift lever during the operation of assembling the bolt.
When the wiring is performed in this manner, there is a problem that a work load on an operator who assembles the bolt is large, that is, assembling performance at the time of assembling the bolt is poor.
The present invention has been made in view of the above problems, and an object thereof is to provide a technique capable of preventing a bolt from coming off and improving the assembling property at the time of assembling the bolt.
Means for solving the problems
In order to achieve the above object, a shift device according to one aspect of the present invention is a shift device for operating a transmission of a transmission, including: more than 1 shift lever; a fixing portion fixed to the shift lever and having an attachment hole; a bolt which is screwed and attached to the attachment hole and fixes the fixing portion to the shift lever; and a movement restricting member that restricts outward movement of the bolt at a position axially outward of a certain portion of the bolt attached to the mounting hole.
In the above-described shift device, the movement restricting member may have a contact surface that contacts a part of an outer side surface of the bolt when the bolt is loosened.
In the above-described shifting device, the movement restricting member may be an annular member having a portion opened, and the outer diameter of the portion may be reduced by bringing the opened portion closer to the annular member.
In the above-described shift device, the movement restricting member may be attached to the attachment hole in a state where an outer diameter of the movement restricting member is larger than an outer diameter of the bolt and an inner diameter of the movement restricting member is smaller than the outer diameter of the bolt.
In the above-described shifting apparatus, the fixed portion may be a shift fork that moves a sleeve for coupling a transmission gear of the transmission.
In the above-described shifting apparatus, the fixed portion may be a shift paddle that is operated when the shift lever is moved in a predetermined direction.
In the above-described shift device, a hole extending in the axial direction may be formed in the head portion of the bolt so as to have a polygonal cross section.
Effects of the invention
According to the present invention, the bolt can be prevented from falling off, and the assembling property at the time of assembling the bolt can be improved.
Drawings
Fig. 1 is a schematic configuration diagram of a shift device according to an embodiment of the present invention.
Fig. 2 is a perspective view of a portion of a gear shift device according to an embodiment of the present invention.
Fig. 3 is a partial cross-sectional view of a shifting apparatus according to an embodiment of the present invention.
Fig. 4 is a diagram showing a structure of a snap ring according to an embodiment of the present invention.
Fig. 5 is a view showing an example of attachment of a bolt according to a modification of the present invention.
Detailed Description
Hereinafter, a shift device according to an embodiment of the present invention will be described with reference to the drawings. The same reference numerals are given to the same parts, and their names and functions are also the same. Thus, detailed description thereof will not be repeated.
Fig. 1 is a diagram showing a schematic configuration of a shift device according to the present embodiment.
The shifting device 10 is a device for shifting in a mechanical manual transmission. The shift device 10 includes: 1 or more shift levers (a 1 st shift lever R1, a 2 nd shift lever R2, a 3 rd shift lever R3, a 4 th shift lever R4, a 5 th shift lever R5) extending in a predetermined direction; a guide block 11; a 1 st shift paddle 12; a 2 nd shift paddle 13; a 3 rd shift block 14; a 1 st shift arm (shift fork) 15; a 2 nd shift arm (shift fork) 16; a 3 rd shift arm (shift fork) 17; a 4 th shift arm (shift fork) 18; a reversing block 19; a reversing lever 20; and a stop block 21. Here, the 1 st shift block 12, the 2 nd shift block 13, the 3 rd shift block 14, the 1 st shift arm 15, the 2 nd shift arm 16, the 3 rd shift arm 17, the 4 th shift arm 18, and the reverse block 19 are examples of fixed portions fixed to the shift lever.
The guide block 11 is fixed to a transmission case, not shown, and has through holes into which the 1 st to 4 th shift levers R1 to R4 are inserted. The guide block 11 guides the movement of the shift levers R1 to R4 in the AB direction in the drawing.
The 1 st shift lever R1 has the 1 st shift block 12 and the 1 st shift arm 15 fixed thereto. When the reverse or extra low speed (creep) is selected by an unillustrated operating lever, the 1 st shift paddle 12 engages with one end of the operating lever and moves in the AB direction in the drawing.
The 1 st shift arm 15 is engaged with a sleeve that is coupled to a transmission gear for reverse movement or an ultra-low speed transmission gear of a transmission, not shown, to establish a transmission path from the input side to the output side of the transmission.
With this configuration, when the reverse or ultra-low speed is selected by the operating lever, the 1 st shift paddle 12 engaged with the operating lever moves in a direction corresponding to the selection. By the movement of the 1 st shift lever 12, the 1 st shift lever R1 to which the 1 st shift lever is fixed moves integrally, and the 1 st shift arm 15 fixed to the 1 st shift lever R1 also moves integrally, and the bush engaged with the 1 st shift arm 15 moves. Thus, in the transmission, a transmission path via the speed change gear corresponding to the selection of the operation lever is established.
The 2 nd shift lever R2 has the 2 nd shift block 13 and the 2 nd shift arm 16 fixed thereto. When the 1 st or 2 nd shift lever is selected by an unillustrated operating lever, the 2 nd shift paddle 13 engages with one end of the operating lever and moves in the AB direction in the drawing.
The 2 nd shift arm 16 is engaged with a sleeve that is coupled to a 1 st gear or a 2 nd gear of the transmission, not shown, to establish a transmission path from the input side to the output side.
With this configuration, when the 1 st or 2 nd shift lever is selected by the operating lever, the 2 nd shift paddle 13 engaged with the operating lever moves in a direction corresponding to the selection. By the movement of the 2 nd shift lever 13, the 2 nd shift lever R2 to which the 2 nd shift lever 13 is fixed moves integrally, and the 2 nd shift arm 16 fixed to the 2 nd shift lever R2 also moves integrally, and the bush engaged with the 2 nd shift arm 16 moves. Thus, in the transmission, a transmission path via the speed change gear corresponding to the selection of the operation lever is established.
The 3 rd shift lever R3 has the 3 rd shift block 14 and the reverse block 19 fixed thereto. When the 3 rd or 4 th shift lever is selected by an unillustrated operating lever, the 3 rd shift paddle 14 engages with one end of the operating lever and moves in the AB direction in the drawing.
The reverse rotation block 19 is engaged with one end of the reverse rotation lever 20. The reversing lever 20 is rotatably supported on the transmission housing.
With this configuration, when the 3 rd or 4 th shift lever is selected by the operating lever, the 3 rd shift paddle 14 engaged with the operating lever moves in a direction corresponding to the selection. The 3 rd shift lever R3 to which the 3 rd shift lever 14 is fixed moves integrally by the movement of the 3 rd shift lever 14, the reverse rotation block 19 fixed to the 3 rd shift lever R3 moves, and the reverse rotation lever 20 rotates in accordance with the movement of the reverse rotation block 19, so that the 3 rd shift arm 17 moves in the direction opposite to the movement direction of the reverse rotation block 19.
The 3 rd shift arm 17 is fixed to the 4 th shift lever R4. The 3 rd shift arm 17 engages with one end of the reverse lever 20. The 3 rd shift arm 17 engages with a sleeve that is coupled to a 3-speed gear or a 4-speed gear of the transmission, not shown, to establish a transmission path from the input side to the output side.
With such a configuration, when the reverse lever 20 is rotated by the movement of the reverse block 19, the 3 rd shift arm 17 moves in the direction opposite to the movement direction of the reverse block 19, and the bush engaged with the 3 rd shift arm 17 moves. Thus, in the transmission, a transmission path via the speed change gear corresponding to the selection of the operation lever is established.
The 4 th shift arm 18 is fixed to the 5 th shift lever R5. The 4 th shift arm 18 is connected to an actuator, not shown, and moves in the AB direction in the drawing when a low speed or high speed shift position is selected.
The 4 th shift arm 18 is engaged with a sleeve coupled to either a low-speed side or a high-speed side of a sub-transmission of the transmission, not shown.
The stopper 21 functions to stop the 1 st shift lever R1, the 2 nd shift lever R2, and the 3 rd shift lever R3 at predetermined neutral positions and gear positions. The stopper 21 functions to stop the 5 th shift lever R5 at a predetermined gear position.
Next, the fixing of the fixing portions (shift blocks, shift arms, etc.) to the shift levers (R1 to R5) will be described. In the following, the fixing of the 3 rd shift arm 17 to the 4 th shift lever R4 is explained as an example, but in the present embodiment, other fixing portions fixed to the shift levers (R1 to R5) are also fixed by the same configuration.
Fig. 2 is a perspective view of a portion of a gear shift device according to an embodiment of the present invention. Fig. 2 is a view of a range C in fig. 1 as viewed from the lower side of fig. 1. In fig. 2, the lower side of fig. 1 is shown as the upper side. Fig. 3 is a partial cross-sectional view of a shifting apparatus according to an embodiment of the present invention. Fig. 3 is a partial sectional view taken along line D-D of fig. 2.
As shown in fig. 3, a tapered portion R4a into which the tip (tapered portion 32) of the bolt 30 for fixing the 3 rd shift arm 17 is inserted is formed in the 4 th shift lever R4 in accordance with the position where the 3 rd shift arm 17 is fixed.
The 4 th shift lever R4 is inserted into the through hole 17a of the 3 rd shift arm 17.
As shown in fig. 2 and 3, the 3 rd shift arm 17 is formed with an attachment hole 17b for attaching the bolt 30. The bolt 30 has a tapered portion 32 on the side of the through hole 17a (on the lower side in the description of fig. 2 and 3), and a thread groove portion 33 having a thread groove formed thereon above the tapered portion 32. A polygonal hole 31 extending in the axial direction and having a polygonal cross section is formed in the head of the bolt 30. Polygonal holes 31 are used when mounting the bolts 30. With such a configuration, the length of bolt 30 can be shortened, and each part related to the attachment of bolt 30 can be downsized.
The mounting hole 17b of the 3 rd shift arm 17 communicates with the through hole 17 a. A screw groove portion 17c is formed in the inner periphery of the lower side of the mounting hole 17b, and the screw groove portion 17c has a screw groove to be screwed with the screw groove portion 33 of the bolt 30 for fixing the 3 rd shift arm 17.
A snap ring attachment portion 17d is formed in the attachment hole 17b at a position above (also referred to as axially outward from) the head of the bolt 30 when the bolt 30 is attached, and the snap ring attachment portion 17d forms a space having a diameter longer than the diameter of the uppermost portion of the attachment hole 17 b. The position of the snap ring attachment portion 17d may be a position in contact with the head of the attached bolt 30 or a position having a play with the head of the bolt 30.
A snap ring (an example of a movement restricting member) 40 is attached to the snap ring attachment portion 17d, and the snap ring 40 has an outer diameter longer than the diameter of the uppermost portion of the attachment hole 17b and an inner diameter shorter than the diameter of the bolt 30. Therefore, when the snap ring 40 is attached to the snap ring attachment portion 17d in this state, it is difficult to move axially outward (upward) from the snap ring attachment portion 17 d. Therefore, when the bolt 30 is loosened and the head of the bolt 30 comes into contact with the lower surface (contact surface) of the snap ring 40, the bolt 30 is restricted from moving outward in the axial direction of the mounting hole 17b, and can be appropriately prevented from coming off the mounting hole 17 b.
Fig. 4 is a diagram showing a structure of a snap ring according to an embodiment of the present invention.
The snap ring 40 has, for example, an annular shape (substantially C-shaped) with a part thereof opened. The snap ring 40 is sandwiched so that 2 end portions 41 adjacent to each other at the open portion are close to each other, whereby the outer diameter of at least a part of the snap ring 40 can be reduced and deformed. Therefore, the snap ring 40 can be easily attached to the snap ring attachment portion 17d by being disposed in a state of being deformed by reducing the outer diameter thereof, and the assembling property at the time of bolt assembling can be improved. Further, the snap ring 40 is provided in a state of being deformed to reduce its outer diameter, so that it can be easily detached from the snap ring attachment portion 17 d.
In order to clamp the snap ring 40, a clamping hole 42 into which a predetermined portion of a snap ring attachment tool is inserted is formed in 2 end portions 41 of the snap ring 40. According to the snap ring attachment tool, the portion of the attachment tool is inserted into the clamping hole 42 of the end portion 41 and clamped, so that the snap ring 40 can be easily reduced in size and deformed to be held, and can be easily attached to and detached from the snap ring attachment portion 17 d.
The outer diameter L of the snap ring 40 is equal to or larger than the outer diameter of the snap ring attachment portion 17 d. The inner diameter M of the snap ring 40 is shorter than the outer diameter of the bolt 30, for example. The inner diameter of the snap ring 40 in the state of being attached to the snap ring attachment portion 17d may be smaller than the outer diameter of the bolt 30.
As described above, according to the present embodiment, when the bolt 30 is loosened, the head of the bolt 30 contacts the lower surface of the snap ring 40, so that the bolt 30 is restricted from moving outward in the axial direction of the mounting hole 17b, and can be appropriately prevented from coming off the mounting hole 17 b.
Next, a modified example of the present invention will be described.
Fig. 5 is a view showing an example of attachment of a bolt according to a modification of the present invention.
In the above embodiment, the polygonal hole 31 is formed in the head portion of the bolt 30, but as shown in fig. 5, the bolt 30 of the present invention may have a polygonal projection 34. In the case where such a bolt 30 is used, it is also possible to provide: in the case where the bolt 30 is loosened, the shoulder portion 35 of the bolt 30 contacts the lower surface of the snap ring 40.
The present invention is not limited to the above-described embodiments, and can be implemented by being appropriately modified within a range not departing from the gist of the present invention.
For example, the position where the snap ring 40 contacts the bolt may be a position where the bolt can be restricted from moving outward in the axial direction of the mounting hole 17b, or in short, a position outward in the axial direction of a certain portion of the bolt after mounting.
The shape of the snap ring 40 is not limited to the above, and may be any shape as long as it can be attached to the snap ring attachment portion 17d and can restrict the movement of the bolt outward in the axial direction.
In the above embodiment, the snap ring 40 is configured to be easily attached to and detached from the snap ring attachment portion 17d, but when it is not necessary to consider the detachment of the snap ring 40, only the snap ring attachment portion 17d may be easily attached but the detachment may be difficult.
In the above-described embodiment, the example of the gear shift device that receives the driving force of the operation lever by the driver with the shift paddle and transmits the driving force to the manual mechanical transmission to shift gears has been described, but the present invention is not limited to this, and may be a gear shift device that receives the driving force of the actuator with the shift paddle and transmits the driving force to the manual mechanical transmission to shift gears.
This application is based on the japanese patent application (2015-122857) filed on 18/6/2015, the contents of which are hereby incorporated by reference.
The shift device of the present invention is useful in that the bolt can be prevented from falling off, and the assembling property at the time of assembling the bolt can be improved.
Description of the reference numerals
10 gearshift
11 guide block
12 st 1 shift block
13 2 nd gear shifting block
14 3 rd gear shifting block
15 st 1 shift arm
16 nd 2 shift arm
17 3 rd shift arm
17a through hole
17b mounting hole
17c thread groove part
17d snap ring mounting part
18 th 4 shift arm
19 reverse block
20 reversing lever
30 bolt
31 polygonal hole
32 taper part
33 thread groove portion
40 clasp
41 end of
42 hole for clamping
R1 shift lever 1
R2 shift lever 2
R4 shift lever 4
R5 shift lever 5
Claims (11)
1. A shifting apparatus for operating a transmission of a transmission, characterized by:
more than 1 shift lever is arranged on the gear shifting device,
a fixing portion fixed to an outer periphery of the shift lever and having a mounting hole formed with a 1 st screw groove portion on an inner periphery on a lower side,
a bolt which is screwed and mounted in the mounting hole to fix the fixing portion to the shift lever, and
a movement restricting member that restricts outward movement of the bolt at a position axially outward of the first thread groove and a portion of the bolt to be mounted in the mounting hole;
the bolt has a 1 st taper part formed at the front end thereof and a 2 nd thread groove part formed above the 1 st taper part;
the 2 nd thread groove portion of the bolt is screwed with the 1 st thread groove portion of the mounting hole;
the shift lever is formed with a 2 nd taper portion into which the 1 st taper portion of the bolt is inserted.
2. The shifting apparatus of claim 1,
the movement restricting member has a contact surface that contacts a part of an axially outer surface of the bolt when the bolt is loosened.
3. The shifting apparatus of claim 2,
the movement restricting member is an annular member having a portion opened, and the outer diameter of the portion can be reduced by bringing the opened portions closer to each other.
4. The shifting apparatus of claim 1,
the movement restricting member is attached to the attachment hole in a state where an outer diameter of the movement restricting member is larger than an outer diameter of the bolt and an inner diameter of the movement restricting member is smaller than the outer diameter of the bolt.
5. The shifting apparatus of claim 2,
the movement restricting member is attached to the attachment hole in a state where an outer diameter of the movement restricting member is larger than an outer diameter of the bolt and an inner diameter of the movement restricting member is smaller than the outer diameter of the bolt.
6. The shifting apparatus of claim 3,
the movement restricting member is attached to the attachment hole in a state where an outer diameter of the movement restricting member is larger than an outer diameter of the bolt and an inner diameter of the movement restricting member is smaller than the outer diameter of the bolt.
7. The shifting apparatus of any one of claims 1 to 6,
the fixing portion is a shift fork that moves a sleeve for coupling a speed change gear of the transmission.
8. The shifting apparatus of any one of claims 1 to 6,
the fixed portion is a shift paddle operated when the shift lever is moved in a predetermined direction.
9. The shifting apparatus of any one of claims 1 to 6,
a hole extending in the axial direction and having a polygonal cross section is formed in the head of the bolt.
10. The shifting apparatus of claim 7,
a hole extending in the axial direction and having a polygonal cross section is formed in the head of the bolt.
11. The shifting apparatus of claim 8,
a hole extending in the axial direction and having a polygonal cross section is formed in the head of the bolt.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015122857A JP6544072B2 (en) | 2015-06-18 | 2015-06-18 | Shift device |
| JP2015-122857 | 2015-06-18 | ||
| PCT/JP2016/067999 WO2016204249A1 (en) | 2015-06-18 | 2016-06-16 | Shifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107709846A CN107709846A (en) | 2018-02-16 |
| CN107709846B true CN107709846B (en) | 2020-03-13 |
Family
ID=57546232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680034473.0A Active CN107709846B (en) | 2015-06-18 | 2016-06-16 | Gear shifting device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6544072B2 (en) |
| CN (1) | CN107709846B (en) |
| WO (1) | WO2016204249A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7163596B2 (en) * | 2018-03-13 | 2022-11-01 | いすゞ自動車株式会社 | Gear shift operating device |
| CN109672295B (en) * | 2019-01-15 | 2021-02-05 | 柏力开米复合塑料(昆山)有限公司 | Mounting device of turnover motor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59134820U (en) * | 1983-02-28 | 1984-09-08 | 日産ディーゼル工業株式会社 | Claw assembly type shift fork |
| CN2063587U (en) * | 1990-03-31 | 1990-10-10 | 樊永华 | Check-ring type antiloosing device for fastening bolt |
| JPH0566365U (en) * | 1992-02-13 | 1993-09-03 | 三菱自動車工業株式会社 | Shift fork support structure |
| CN2485173Y (en) * | 2001-06-06 | 2002-04-10 | 中国第一汽车集团公司 | Transmission |
| JP2013199964A (en) * | 2012-03-23 | 2013-10-03 | Fuji Heavy Ind Ltd | Shift structure in manual transmission |
| CN103982529A (en) * | 2014-04-24 | 2014-08-13 | 中国北方发动机研究所(天津) | Combined-type crankshaft |
| CN204175946U (en) * | 2014-09-30 | 2015-02-25 | 重庆青山工业有限责任公司 | A kind of gearshift mechanism of manual transmission |
-
2015
- 2015-06-18 JP JP2015122857A patent/JP6544072B2/en active Active
-
2016
- 2016-06-16 WO PCT/JP2016/067999 patent/WO2016204249A1/en active Application Filing
- 2016-06-16 CN CN201680034473.0A patent/CN107709846B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59134820U (en) * | 1983-02-28 | 1984-09-08 | 日産ディーゼル工業株式会社 | Claw assembly type shift fork |
| CN2063587U (en) * | 1990-03-31 | 1990-10-10 | 樊永华 | Check-ring type antiloosing device for fastening bolt |
| JPH0566365U (en) * | 1992-02-13 | 1993-09-03 | 三菱自動車工業株式会社 | Shift fork support structure |
| CN2485173Y (en) * | 2001-06-06 | 2002-04-10 | 中国第一汽车集团公司 | Transmission |
| JP2013199964A (en) * | 2012-03-23 | 2013-10-03 | Fuji Heavy Ind Ltd | Shift structure in manual transmission |
| CN103982529A (en) * | 2014-04-24 | 2014-08-13 | 中国北方发动机研究所(天津) | Combined-type crankshaft |
| CN204175946U (en) * | 2014-09-30 | 2015-02-25 | 重庆青山工业有限责任公司 | A kind of gearshift mechanism of manual transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017008986A (en) | 2017-01-12 |
| WO2016204249A1 (en) | 2016-12-22 |
| JP6544072B2 (en) | 2019-07-17 |
| CN107709846A (en) | 2018-02-16 |
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