CN101251186B - Transmission reverse gear latching mechanism - Google Patents
Transmission reverse gear latching mechanism Download PDFInfo
- Publication number
- CN101251186B CN101251186B CN2008100354640A CN200810035464A CN101251186B CN 101251186 B CN101251186 B CN 101251186B CN 2008100354640 A CN2008100354640 A CN 2008100354640A CN 200810035464 A CN200810035464 A CN 200810035464A CN 101251186 B CN101251186 B CN 101251186B
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- gear
- block
- reverses gear
- safety block
- reverses
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Abstract
The invention discloses a reverse gear locking mechanism for a speed changer, wherein a gear selecting shaft(1) is provided with a reverse-gear safety block(2) which is provided with a torsion spring(6); the reverse gear safety block(2) can return the original position under the action of the torsion spring(6); a shell of the speed changer is fixedly provided with a baffle plate(3); when the gear selecting shaft(1) engages the reverse gear at the fifth gear, the baffle plate(3) can block the reverse-gear safety block(2), which makes the reverse gear disengaged. Due to the adoption of the structure, the speed changer can not engage the reverse gear at the fifth gear, thereby improving the driving safety.
Description
Technical field
What the present invention relates to is a kind of automotive transmission operating mechanism, particularly a kind of preposition forerunner's reverse gear locking device.
Background technique
For the automobile that uses indirect operation transmission, mistake is hung reverse gear in vehicle traveling process, will take place between transmission gear to impact greatly, causes damage parts.During vehicle starting if mistake is hung reverses gear, security incident appears easily then.For this reason, the lock that reverses gear should be set.The effect of locking of reversing gear is to make the driver apply bigger power to speed change lever, can hang into reversing gear, and plays the effect of pointing out, and reverses gear to prevent that mistake from hanging.Traditional speed changer is provided with reverse gear locking device in operating mechanism, a plate washer is housed on shift selection shaft withstands five grades of directions toward the reverse gear gear shift, makes five grades can not directly enter reverse gear, only after getting back to neutral gear, after baffle plate and gear shift refer to stagger, could hang reverse gear.The shortcoming of this reverse gear locking device for the driver after plucking shelves from five grades, just can enter into other gears after must being suspended to neutral earlier, speed changer is in neutral state, makes power transmission interrupt.
Through the literature search of prior art is found, Chinese patent application number: 200510111577.0, name is called: reverse gear locking mechanism for indirect operation transmission.This patent relates to the indirect operation transmission reverse gear latching mechanism in AE field, comprises the safety block that reverses gear, support, spring, rivet, pin, the auxiliary catch that reverses gear, holder hooks.The safety block that reverses gear links together by rivet pine loose ground, and the auxiliary catch that reverses gear is positioned at the bottom of the safety block that reverses gear, and safety block is made one with reversing gear, holder hooks is positioned at the support bottom, make one with support, the auxiliary catch that reverses gear is hooked in a termination of spring, and holder hooks is hooked in another termination of spring.Pin is positioned at the top of the safety block that reverses gear, and leans on mutually with the top edge of the safety block that reverses gear.Press down when reversing gear safety block when pin is stressed, spring stress stretches, and slot milling enters five gears by pin and puts; When pin entered five gears and puts, the safety block that reverses gear was no longer stressed, rebounded to original position under the effect of spring, and the resistance of snap close right flank can not enter neutral gear position again and pin is subjected to reversing gear, thereby by locking.Avoided automobile to cause mistake to hang the danger of reversing gear when running at high speed, increased the Security of travelling at five retainings.
This patent is by the cylindrical spring structure, prevent that automobile from hanging reverse gear in the process of moving by mistake, but this patent only is fit to the vertical speed changer of putting, for preposition forerunner's speed changer because the restriction in space can't be adopted this technology, this patent can not directly be hung fourth gear after plucking five grades simultaneously, and Here it is, and above-mentioned said speed changer exists the power transmission disruption after plucking five grades.
Because the defective that above-mentioned existing transmission reverse gear latching mechanism exists, the inventor is based on being engaged in this type of product specification manufacturing abundant for many years practical experience and professional knowledge, and practice in addition, in the hope of creating directly gear shift in the gearshift procedure, avoid the reverse gear latching mechanism of the preposition forerunner's speed changer of being applicable to of power interruption.Constantly study, test and improve through the inventor, create the present invention.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of speed changer that makes can not directly hang the transmission reverse gear latching mechanism that reverses gear from five retainings.
For solving the problems of the technologies described above, one safety block that reverses gear is set on the block selecting axle of transmission reverse gear latching mechanism of the present invention, on the described safety block that reverses gear a torsion spring is set, the described safety block that reverses gear can be got back to initial position under the effect of torsion spring, fix a baffle plate on the case of transmission, described block selecting axle is hung by five retainings when reversing gear, and described baffle plate can block and describedly reverse gear safety block and do not hang and reverse gear.
Preferably, a V-type groove is set on the safety block that reverses gear, hangs from five retainings when reversing gear at the block selecting axle, described baffle plate is limited in the described V-type groove.
Preferably, the V-type groove becomes the obtuse angle.
Preferably, fix the Insurance Block that reverses gear on the block selecting axle, fix a pin on the Insurance Block, the described safety block that reverses gear of pin interference fit, the above torsion spring of pin overcoat.
Preferably, on the Insurance Block that reverses gear, the other end is not on the safety block that reverses gear for torsion spring one end.
Preferably, a resilient key is set on the Insurance Block that reverses gear, limits the rotation of safety block of reversing gear at circumferencial direction.
Preferably, the safety block that reverses gear is on the single-revolution structure three-jaw to be set, and wherein on the pawl V-type groove is set, and a pawl is used to pin an end of torsion spring, and another pawl is subjected to the restriction of described resilient key.
Preferably, block selecting axle two ends are provided with return spring, and two springs all are under the free state, and the block selecting axle is in neutral.
After adopting such structure, effectively prevented to reverse gear from the direct mistake extension of five retainings in the vehicle traveling process, improved the Security of running process, the design of block selecting axle upper reset spring, make speed changer after plucking five retainings, automatically revert to neutral under the effects at Returnning spring, thereby can directly hang up other gears, avoided the problem of the power transmission interruption of traditional speed changer.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is a plan view of the present invention.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is a stereogram of the present invention.
Fig. 4 is that the block selecting handle is in 3/4 flat abutment.
Fig. 5 is that speed changer is by the pilot process schematic representation of neutral to the 5/R flat abutment.
Fig. 6 is that speed changer is directly hung the schematic representation that reverses gear by five retainings.
Fig. 7 is that speed changer is hung the schematic representation that reverses gear by neutral.
1, block selecting axle 2, safety block reverses gear
3, baffle plate 4, Insurance Block reverses gear
5, resilient key 6, torsion spring
21, V-type groove 61, torsion spring one end
62, the torsion spring the other end 7, pin
Embodiment
Transmission reverse gear latching mechanism comprises following structure according to the present invention, hereinafter will be described in detail this with reference to accompanying drawing.
As Fig. 1, Fig. 2 and shown in Figure 3, transmission reverse gear latching mechanism of the present invention is provided with a sleeve on block selecting axle 1, and this sleeve is fixed on the block selecting axle 1 by built-in little resilient key 5.Fix the Insurance Block 4 that reverses gear on the sleeve, this Insurance Block 4 that reverses gear is fixed on the sleeve by a little resilient key 5.Little resilient key 5 all gos deep in the sleeve, not the surface of outstanding sleeve.
Interference fit one pin 7 on the Insurance Block 4 that reverses gear is because of the safety block 2 that reverses gear is fixed on the block selecting axle 1, so pin 7 can not rotate.Loose ground puts the middle porose safety block 2 that reverses gear on the pin 7, is Spielpassung between them, and the safety block 2 that reverses gear can rotate around pin 7.Reverse gear above the safety block 2, the outside of pin 7 puts torsion spring 6, promptly torsion spring 6.On the safety block 2 that reverses gear, an end is not on the Insurance Block 4 that reverses gear for one end of torsion spring 6.Be not subjected under the situation of external force at the safety block 2 that reverses gear, can under the effect of torsion spring 6, get back to initial position.One resilient key 5 is set on the Insurance Block 4 that reverses gear, limits the rotation amplitude of safety block 2 on the Insurance Block 4 that reverses gear that reverse gear.
The present invention also comprises a baffle plate 3, is fixed on the case of transmission.These baffle plate 3 residing planes are vertical with block selecting axle 1.
Concrete shape for the safety block 2 that reverses gear can be designed on the single-revolution structure three-jaw is set, and the end that V-type groove 21, one pawls are used to pin torsion spring 6 wherein is set on the pawl, and another pawl is subjected to the restriction of described resilient key 5.Elected gear shaft 1 is when being reversed gear by five retaining extensions, and a pawl that is provided with V-type groove 21 can be collided with baffle plate 3, and is motionless because of the fixed-site of baffle plate 3, reverses gear so block selecting axle 1 can not directly be hung up from five retainings.At this, the effect of V-type groove 21 is, baffle plate 3 is limited in the V-type groove 21, is difficult for sliding with respect to baffle plate 3, guarantees the locking effect.V-type groove 21 is too narrow, can not be included in the V-type groove 21 having certain thickness baffle plate 3, does not also have the effect of defining baffle 3.So V-type groove 21 preferably is provided with obtuse-angulate.
Two ends at block selecting axle 1 put return spring, and when elected gear shaft 1 was in the neutral state, two springs all were in free state, do not compress also not stretch.Elected gear shaft 1 when the 5/R flat abutment, the return spring of putting near the 5/R gear by compression, the nonelastic distortion of return spring near 1/2 gear is put does not have the effect of elastic force to block selecting axle 1.Elected gear shaft 1 when 1/2 gear is put, the return spring of putting near 1/2 gear by compression, the nonelastic distortion of return spring near the 5/R gear is put does not have the effect of elastic force to block selecting axle 1.As seen, block selecting axle 1 is when 1/2 retaining, 5/R flat abutment, and block selecting axle 1 all is subjected to the restoring force of return spring, so when plucking retaining, block selecting axle 1 can be got back to neutral automatically under the effect of return spring.Under the effect of return spring, after moving back five retainings, gear shifting handle can directly enter 3/4 flat abutment, promptly can directly select three retaining or four retainings after moving back five retainings.So just realized that speed changer needn't stop the situation that just enters other gears in neutral after moving back five retainings.
As shown in Figure 4, when handle when 1/2,3/4 gear is put, the safety block 2 that reverses gear can be around the center of pin 7 left-right rotation, assurance can be selected corresponding gear.But when the 5/R flat abutment, after plucking five retainings, block selecting axle 1 can be got back to neutral gear position automatically under the effect of return spring.Get back to hang again after the neutral and reverse gear, as Fig. 5, shown in Figure 7, the safety block 2 that reverses gear moves to the 5/R flat abutment, when the position that moves to as shown in Figure 5, the safety block 2 that reverses gear is collided with the side of baffle plate 3, because the safety block 2 that reverses gear is Spielpassung with pin 7, can on pin 7, rotate, so the safety block 2 that reverses gear can rotate along the pin direction of taking advantage of a situation, as shown in Figure 7.The safety block 2 that reverses gear continues to move to left, and moves to hang the back of reversing gear after the 5/R flat abutment and realize reversing gear.
If above-mentioned return spring lost efficacy, after plucking five retainings, the safety block 2 that reverses gear can not be got back to neutral gear position automatically.At this moment, reverse gear if the driver hangs at this moment, as shown in Figure 6, the safety block 2 of reversing gear can be collided with the front of baffle plate 3, and the V-type groove 21 of the safety block 2 that reverses gear is limited in baffle plate 3 wherein, can't continue to hang to reverse gear, thereby play the effect of the locking that reverses gear.This structural limitations speed changer directly hang the situation of reversing gear from five retainings.Torsion spring 6 is when the mounting point, and the torque of spring is 31～39Nm, and behind rotation 20 degree, the torque of torsion spring 6 is 40～50Nm.
The safety block 2 that why reverses gear can be collided with the front of baffle plate 3, is to get back to initial position because the safety block 2 that reverses gear is hung five retaining backs under the effect of torsion spring 6.Hang and reverse gear plucking five retaining backs, V-type groove 21 positions of the safety block 2 that reverses gear are towards baffle plate 3 fronts.So, can collide with the front of baffle plate 3.
After adopting new structure, prevent the situation that the mistake extension in the vehicle traveling process reverses gear effectively, improved the Security in the running process.To the particular design of the safety block 2 that reverses gear, after moving back five retainings, can directly hang up other gears that advance simultaneously, avoid the power interruption in traditional speed changer.The present invention any fault do not occur in 300,000 kilometers running test.
Above-mentioned design example only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other substantial equivalence means that it may occur to persons skilled in the art that are all in claim scope of the present invention.
Claims (5)
1. transmission reverse gear latching mechanism, it is characterized in that: the safety block (2) that reverses gear is set on the block selecting axle (1), the described safety block that reverses gear (2) is provided with V-type groove (21), one torsion spring (6) is set on the described safety block that reverses gear (2), the described safety block that reverses gear (2) can be got back to initial position under the effect of torsion spring (6), fix a baffle plate (3) on the case of transmission, described block selecting axle (1) is when being reversed gear by five retaining extensions, the safety block (2) that reverses gear is in initial position, described baffle plate (3) is limited in the V-type groove (21) of the described safety block that reverses gear (2) and does not hang reversing gear, fix the Insurance Block (4) that reverses gear on the described block selecting axle (1), fix a pin (7) on the described Insurance Block, the described safety block that reverses gear of described pin (7) interference fit (2), described pin (7) the above torsion spring of overcoat (6), one resilient key (5) is set on the described Insurance Block that reverses gear (4), limits the rotation of safety block (2) of reversing gear at circumferencial direction.
2. transmission reverse gear latching mechanism according to claim 1 is characterized in that: described V-type groove (21) becomes the obtuse angle.
3. transmission reverse gear latching mechanism according to claim 1 is characterized in that: on the Insurance Block that reverses gear (4), the other end (62) is not on the safety block that reverses gear (2) for described torsion spring one end (61).
4. transmission reverse gear latching mechanism according to claim 1, it is characterized in that: the described safety block that reverses gear (2) is provided with three-jaw on the single-revolution structure, described V-type groove (21) wherein is set on the pawl, and a pawl is used to pin torsion spring one end (61), and another pawl is subjected to the restriction of described resilient key (5).
5. transmission reverse gear latching mechanism according to claim 1 is characterized in that: described block selecting axle (1) two ends are provided with return spring, and two springs all are in free state following time, and block selecting axle (1) is in neutral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100354640A CN101251186B (en) | 2008-04-01 | 2008-04-01 | Transmission reverse gear latching mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100354640A CN101251186B (en) | 2008-04-01 | 2008-04-01 | Transmission reverse gear latching mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101251186A CN101251186A (en) | 2008-08-27 |
| CN101251186B true CN101251186B (en) | 2011-04-27 |
Family
ID=39954719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100354640A Expired - Fee Related CN101251186B (en) | 2008-04-01 | 2008-04-01 | Transmission reverse gear latching mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101251186B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413583B (en) * | 2008-12-05 | 2012-11-21 | 上海汽车变速器有限公司 | Transverse type manual speed variator reverse gear safe device |
| CN102853068B (en) * | 2011-06-30 | 2016-02-10 | 长城汽车股份有限公司 | Anti-misoperation device for reverse gear of automotive transmission |
| CN102678910B (en) * | 2012-05-31 | 2015-03-11 | 长城汽车股份有限公司 | Gear reversing locking device of automobile transmission |
| CN103758996B (en) * | 2013-12-25 | 2016-03-30 | 浙江吉利控股集团有限公司 | The reverse gear latching mechanism of a kind of 6MT and 6MT speed changer |
| CN113154034A (en) * | 2021-05-10 | 2021-07-23 | 长春汽车工业高等专科学校 | Reverse gear locking device for automobile transmission |
-
2008
- 2008-04-01 CN CN2008100354640A patent/CN101251186B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101251186A (en) | 2008-08-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20200401 |