CN208442265U - Shifting of transmission device - Google Patents
Shifting of transmission device Download PDFInfo
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- CN208442265U CN208442265U CN201820747488.8U CN201820747488U CN208442265U CN 208442265 U CN208442265 U CN 208442265U CN 201820747488 U CN201820747488 U CN 201820747488U CN 208442265 U CN208442265 U CN 208442265U
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- shifting
- gear shift
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- slide block
- selector
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Abstract
The utility model discloses a kind of shifting of transmission devices, it is related to field of automobile, including selecting on selector shaft equipped with gear shifting rocking arm and gear shift shifting block by selecting shifting cam of the selector shaft in lid housing, shifting cam is equipped with arc limit slot, and gear shift positioning pin is housed in lid housing；Gear shift shifting block is flexibly connected with selector fork, and selector fork, which is equipped with, opens reeded slide block, and gear shift shifting block is equipped with the convex block to offset with groove two sidewalls；Be located at arc limit slot two sides on shifting cam has inclined-plane respectively, and gear shift shifting block is equipped with socket, is oppositely arranged two limiting sections for protruding into socket at the slot opening of slide block, limiting section is crimped with selector shaft activity is selected.Compared with prior art, the utility model gear shift stroke is limited with selector shaft from slide block with selecting, distance and the mismachining tolerance of gear shift shaft diameter is selected to be easy to control in the lesser margin of tolerance between two limiting sections of slide block, the gear shift stroke limit margin of tolerance significantly reduces, gear shift accurate positioning.
Description
Technical field
The utility model relates to field of automobile, especially a kind of gearshift of automotive transmission.
Background technique
Automotive transmission is one of most important component in automotive transmission, for coordinating the revolving speed and wheel of engine
The speed change gear of actual travel speed.While the car is driving, speed changer can be between engine and wheel by shift
Generate different gear ratio.A kind of existing shifting of transmission device as shown in Figure 1 and Figure 2, includes by selecting selector shaft 102
Shifting cam 108 in lid housing 106, the one end for selecting selector shaft 102 to stretch out lid housing 106 are equipped with gear shifting rocking arm 107, separately
One end is set with gear shift shifting block 104, and edge is axially arranged with arc limit slot and is located at arc limit slot two on shifting cam 108
The V-arrangement limiting slot of side, as shown in Figure 3, Figure 4；Gear shift positioning pin 105 is housed in lid housing 106, gear shift positioning pin 105 is equipped with
The steel ball 109 to offset with shifting cam 108；Gear shift shifting block 104 connects with 101 activity of selector fork being fixed in shift fork axle 103
It connects, gear shift shifting block 104 is equipped with annular groove and is located at the outwardly directed convex block 104-1 in annular groove side, is equipped with circular arc on the outside of convex block 104-1
Face, as shown in Figure 5, Figure 6；Selector fork 101 is equipped with side and opens reeded slide block 101-1, the arc surface of convex block 104-1 with
The two sidewalls of groove offset, and are relatively set at the slot opening of slide block 101-1 and protrude into annular groove and two outward
Angle is dialled, as shown in Figure 7；When being in neutral state, steel ball 109 is mutually crimped with the arc limit slot of shifting cam 108.Gear shift
When, control crank drives gear shifting rocking arm rotation, by selecting selector shaft that shifting cam, gear shift shifting block is driven to rotate, gear shift shifting block
Convex block drives selector fork and shift fork axle to move axially, while stirring synchronizer gear sleeve and moving axially, and completes gear shift.This
When, steel ball is fallen into a V-arrangement limiting slot of shifting cam, realizes gear shift stroke limit.
Gear shift stroke is limited by the V-arrangement limiting slot of shifting cam at two faces of angle, the angle tolerance of the angle
Range directly determines the accuracy of gear shift stroke.In machining, the mismachining tolerance of angle is difficult to control, angle tolerance model
It encloses larger, causes gear shift stroke limit inaccurate.If gear shift stroke is excessive, vibration, automobile cab can be generated inside speed changer
Interior handle can follow shake；If gear shift stroke is too small, it will cause speed changer internal synthesizer length of action deficiency, occur out of supply
Failure.Current level of processing, can control included angle tolerance θ=± 0.5 ° of V-arrangement limiting slot, when gear shift gear shift shifting block with
The angle tolerance for selecting selector shaft rotational angle is also ± 0.5 °, and the axial line distance of axial line to the convex block of gear shift shifting block is gear shift
The radius of gyration of shifting block be R=26mm, calculate selector fork stroke tolerance i.e. gear shift stroke tolerance σ=R*sin θ=26*sin (±
0.5 °)=± 0.227mm, the gear shift stroke margin of tolerance is larger, and gear shift stroke limit precision is lower, and positioning is inaccurate.
Utility model content
The problem to be solved by the utility model is to provide a kind of shifting of transmission device, its method can solve existing change
The gear shift stroke limit precision of fast device gearshift is lower, positions inaccurate problem.
To solve the above-mentioned problems, the technical solution adopted in the utility model is: this shifting of transmission device includes
By selecting shifting cam of the selector shaft in lid housing, described one end for selecting selector shaft to stretch out the lid housing is shaken equipped with gear shift
Arm, the other end are set with gear shift shifting block, and edge is axially arranged with arc limit slot on the shifting cam, are equipped in the lid housing
Gear shift positioning pin, the gear shift positioning pin are equipped with the steel ball to offset with the shifting cam；The gear shift shifting block and be fixed on dial
Selector fork on fork shaft is flexibly connected, and the selector fork is equipped with side and opens reeded slide block, outside the gear shift shifting block
Side is equipped with the convex block to offset by the two sidewalls of its arc surface and the groove；It is located at the arc on the shifting cam to limit
Position slot two sides are respectively equipped with inclined-plane, and the gear shift shifting block is equipped with socket, is relatively set at the slot opening of the slide block
Two limiting sections of the socket are protruded into, the limiting section selects selector shaft activity to crimp with described；When being in neutral state, institute
It states steel ball mutually to crimp with the arc limit slot of the shifting cam, two limiting sections of the slide block are symmetrically positioned in the choosing and change
The two sides of shelves axis.
In above-mentioned shifting of transmission device technique scheme, more specific technical solution be may also is that on the shifting cam
Angle between two inclined-planes is 90 degree.
Further, the gear shift shifting block, which has, is sleeved on the axle sleeve selected on selector shaft, and the axle sleeve is inserted by described
Mouth is divided into two parts that side is connected by link block, and the convex block is located at the outside of the link block.
Further, the selector fork has the shift fork set being sleeved in the shift fork axle, and the slide block is set to institute
One end of shift fork set is stated, the slot opening of the slide block is substantially vertical towards the axial line covered with the shift fork.
By adopting the above-described technical solution, the utility model has the following beneficial effects: compared with prior art
1, when the utility model gear shift, gear shifting rocking arm is by selecting selector shaft that shifting cam, gear shift shifting block is driven to rotate, gear shift
The convex block of shifting block drives selector fork and shift fork axle to move axially, while stirring synchronizer gear sleeve and moving axially, and completes to change
Shelves.At this point, the steel ball of positioning pin is located on an inclined-plane of shifting cam, a limiting section of slide block is crimped with selector shaft is selected
It is limited.Gear shift stroke by selector fork slide block with select selector shaft to match to be limited, gear shift stroke limit tolerance
The distance between two limiting sections depending on slide block margin of tolerance and the diameter tolerance range for selecting selector shaft.It is being machined
In, the mismachining tolerance apart from size and diameter dimension is smaller, and the margin of tolerance of the two sizes is smaller.It can control two limits
The dimensional tolerance of distance H is ± 0.05mm between portion, and selecting the diameter dimension tolerance of selector shaft is (- 0.018~0) mm, gear shift row
Journey allowance control is in σ=± 0.025-(-0.009~0)=(- 0.025~+0.034) mm, such gear shift stroke limit margin of tolerance
Than significantly reducing originally, gear shift stroke limit precision is high, gear shift accurate positioning.It prevents in part extreme dimensional, becomes
There are the bad phenomenons such as out of supply, shake in fast device.
2, the angle on shifting cam between two inclined-planes is 90 degree, and the steel ball of gear shift rear positioning pin is located at shifting cam
An inclined-plane on, shifting cam rotate in place, guarantee gear shift stroke.Gear shift shifting block, which has, is sleeved on the axis selected on selector shaft
Set, axle sleeve are divided into two parts that side is connected by link block by socket, and convex block is located at the outside of link block；Gear shift shifting block knot
Structure is simple, handling ease.
3, selector fork has the shift fork set being sleeved in shift fork axle, and slide block is set to one end of shift fork set, slide block
Slot opening is substantially vertical towards the axial line covered with shift fork, and selector fork is compact-sized, easy for installation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing shifting of transmission device.
Fig. 2 is the K direction view of Fig. 1.
Fig. 3 is the structural schematic diagram of the shifting cam of existing shifting of transmission device.
Fig. 4 is the cross-sectional view of the shifting cam of existing shifting of transmission device.
Fig. 5 is the structural schematic diagram of the gear shift shifting block of existing shifting of transmission device.
Fig. 6 is the P direction view of Fig. 5.
Fig. 7 is the structural schematic diagram of the selector fork of existing shifting of transmission device.
Fig. 8 is the structural schematic diagram of the utility model embodiment.
Fig. 9 is the structural schematic diagram of the shifting cam of the utility model embodiment.
Figure 10 is the structural schematic diagram of the gear shift shifting block of the utility model embodiment.
Figure 11 is the structural schematic diagram of the selector fork of the utility model embodiment.
Figure 12 is the schematic diagram after the utility model embodiment shifting of transmission device gear shift.
Figure 13 is that the slide block after the utility model embodiment gear shift crimps the schematic diagram limited with selector shaft is selected.
Specific embodiment
The utility model is described in further detail for embodiment with reference to the accompanying drawing:
A kind of shifting of transmission device as shown in Figure 8 includes the gear shift by selecting selector shaft 2 in lid housing 5
Cam 4, the one end for selecting selector shaft 2 to stretch out lid housing 5 are equipped with gear shifting rocking arm, and the other end is set with gear shift shifting block 3.In shifting cam
Along arc limit slot is axially arranged on 4, it is respectively equipped with inclined-plane positioned at arc limit slot two sides, the angle between two inclined-planes is 90
Degree, as shown in Figure 9.Gear shift positioning pin 6 is equipped with by abutment sleeve in lid housing 5, the inner end of gear shift positioning pin 6 has and bullet
The steel ball 7 of spring crimping, steel ball 7 offset with shifting cam 4.Gear shift shifting block 3 connects with 1 activity of selector fork being fixed in shift fork axle
It connects, there is selector fork 1 shift fork being sleeved in shift fork axle set 1-2 and side to open reeded slide block 1-1, slide block 1-1
Positioned at one end of shift fork set 1-2, the slot opening of slide block 1-1 is substantially vertical towards the axial line for covering 1-2 with shift fork, such as Figure 11
It is shown.Gear shift shifting block 3, which has, is sleeved on the axle sleeve selected on selector shaft 2, is provided with socket in the middle part of axle sleeve, axle sleeve is divided into side by socket
Two parts being connected by link block are provided with convex block 3-1 on the outside of link block, and the outside of convex block 3-1 is arc surface, such as
Shown in Figure 10；Convex block 3-1 is offseted by the two sidewalls of its arc surface and groove.It is opposite at the slot opening of slide block 1-1 to set
Two limiting sections for protruding into socket are equipped with, limiting section is crimped with the activity of selector shaft 2 is selected；When be in neutral state when, steel ball 7 with change
The arc limit slot of shelves cam 4 mutually crimps, and two limiting sections of slide block 1-1 select selector shaft 2 in setting up and down be symmetrically positioned in
Two sides.
When the utility model gear shift, gear shifting rocking arm is changed by selecting selector shaft 2 that shifting cam 4, gear shift shifting block 3 is driven to rotate
Shelves shifting block 3 drives selector fork 1 and shift fork axle to move axially by convex block 3-1, while stirring synchronizer gear sleeve and making axial move
It is dynamic, complete gear shift.At this point, steel ball 7 is located on an inclined-plane of shifting cam 4, the limiting section of slide block 1-1 being located above with
The crimping of selector shaft 2 is selected to be limited, as shown in Figure 12 and Figure 13.Gear shift stroke allowance control in (- 0.025~+0.034) mm, this
The sample gear shift stroke limit margin of tolerance is significantly reduced than the original margin of tolerance ± 0.227mm, and gear shift stroke limit precision is high,
Gear shift accurate positioning.It prevents in part extreme dimensional, the bad phenomenons such as out of supply, shake occurs in speed changer.
Claims (5)
1. a kind of shifting of transmission device includes the shifting cam (4) by selecting selector shaft (2) in lid housing (5), institute
The one end for selecting selector shaft (2) to stretch out the lid housing (5) is stated equipped with gear shifting rocking arm, the other end is set with gear shift shifting block (3), described
Along arc limit slot is axially arranged on shifting cam (4), gear shift positioning pin (6) are housed on the lid housing (5), the gear shift
Positioning pin (6) is equipped with the steel ball (7) to offset with the shifting cam (4)；It the gear shift shifting block (3) and is fixed in shift fork axle
Selector fork (1) is flexibly connected, and the selector fork (1) is equipped with side and opens reeded slide block (1-1), the gear shift shifting block
(3) outside is equipped with the convex block (3-1) to offset by the two sidewalls of its arc surface and the groove；It is characterized by: being changed described
It is located at the arc limit slot two sides on shelves cam (4) and is respectively equipped with inclined-plane, the gear shift shifting block (3) is equipped with socket, described
Two limiting sections for protruding into the socket, the limiting section and the choosing are relatively set at the slot opening of slide block (1-1)
Selector shaft (2) activity crimping；When being in neutral state, the arc limit slot phase of the steel ball (7) and the shifting cam (4)
Crimping, two limiting sections of the slide block (1-1) are symmetrically positioned in the two sides for selecting selector shaft (2).
2. shifting of transmission device according to claim 1, it is characterised in that: upper two of the shifting cam (4) is described tiltedly
Angle between face is 90 degree.
3. shifting of transmission device according to claim 1 or claim 2, it is characterised in that: the gear shift shifting block (3), which has, to be sleeved on
The axle sleeve selected on selector shaft (2), the axle sleeve are divided into two parts that side is connected by link block, institute by the socket
State the outside that convex block (3-1) is located at the link block.
4. shifting of transmission device according to claim 1 or claim 2, it is characterised in that: the selector fork (1), which has, to be sleeved on
Shift fork set (1-2) in the shift fork axle, the slide block (1-1) are set to one end of the shift fork set (1-2), the slide block
The slot opening direction of (1-1) is substantially vertical with the axial line of the shift fork set (1-2).
5. shifting of transmission device according to claim 3, it is characterised in that: the selector fork (1), which has, is sleeved on institute
The shift fork set (1-2) in shift fork axle is stated, the slide block (1-1) is set to one end of shift fork set, the slide block (1-1)
Slot opening direction is substantially vertical with the axial line of the shift fork set (1-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820747488.8U CN208442265U (en) | 2018-05-19 | 2018-05-19 | Shifting of transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820747488.8U CN208442265U (en) | 2018-05-19 | 2018-05-19 | Shifting of transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208442265U true CN208442265U (en) | 2019-01-29 |
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ID=65091459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820747488.8U Active CN208442265U (en) | 2018-05-19 | 2018-05-19 | Shifting of transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208442265U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708972A (en) * | 2018-05-19 | 2018-10-26 | 柳州上汽汽车变速器有限公司 | Shifting of transmission device |
-
2018
- 2018-05-19 CN CN201820747488.8U patent/CN208442265U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708972A (en) * | 2018-05-19 | 2018-10-26 | 柳州上汽汽车变速器有限公司 | Shifting of transmission device |
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