CN205877172U - Parking mechanism - Google Patents

Abstract

The utility model provides a parking mechanism, parking mechanism install inside gearbox housing, including the pawl, the one end of pawl is articulated with the pawl mounting bracket, be provided with return spring on the pawl mounting bracket, return spring is connected respectively with pawl mounting bracket and pawl, the front end of pawl is provided with to detain and indicates, parking ratchet and derailleur transmission shaft fixed connection, be provided with on the parking ratchet and indicate the matched with draw -in groove with the knot, the one end of rocking arm is provided with the parking locking shaft rather than mutually perpendicular and fixed connection, the upper portion that is close to the other one end of rocking arm on the rocking arm articulates to be had rather than the vertically push rod, the upper portion of pawl is provided with the pawl arch, the front end of push rod promotes the pawl arch when the rocking arm moves, the pawl was rotatory after the pawl arch received the effort, the knot indicates in the card income draw -in groove. The utility model discloses simple structure is compact, and purchasing cost is low, and the reliability is high.

Description

A kind of halting mechanism

Technical field

This utility model belongs to variator parking transmission field, especially relates to a kind of halting mechanism.

Background technology

Halting mechanism has the function of locking drive axis when automobile stops, it is possible to sliding after preventing automobile park OK, play an important role in terms of improving vehicle safety performance.The variator halting mechanism structure of the most a lot of passenger cars Huge and more complicated, reliability is relatively low, and purchase cost is high simultaneously, and the gross weight of mechanism is the biggest, is unfavorable for car load Fuel economy.

Summary of the invention

In view of this, this utility model is directed to a kind of simple in construction, and purchase cost is low, and the variator that reliability is high is stayed Mechanism of car, to solve the parking problem after stopping.

For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that

A kind of halting mechanism, halting mechanism is arranged on inside case of transmission, including:

Rocking arm, its one end is fixedly connected with parking lock axle orthogonal with it, and rocking arm is near other end of top Being provided with hinged with it and orthogonal push rod, the length direction of push rod stretches out；

Being similar to the ratchet of decussate texture, described ratchet passes through ratchet gyroaxis and U-shaped near one end of described rocking arm The sidewall of the ratchet installing rack of structure, near the lower hinge of rocking arm, ratchet swivel sleeve is each passed through spine after ratchet and cushion block The first side wall of pawl installing rack and the first gyroaxis installing hole of the second side wall lower ends are fixed with case of transmission and are connected, and ratchet is pacified The back shelved is provided with the second cuboid near leading section, is provided with second arranged along its length in the middle of the second cuboid Through hole, setting circle pin is connected with case of transmission after the second through hole；

Ratchet has been extended above near one end of ratchet installing rack towards it away from ratchet gyroaxis protruding, spine on described ratchet Button is had to refer near one end of parking ratchet wheel towards the stretching, extension of its obliquely downward away from ratchet gyroaxis on pawl, ratchet and described ratchet installing rack Between formed a space, described push rod slidably reciprocates in described space, during pushrod movement to extreme position, pushes away The front end of bar promotes ratchet protruding, forms the passage of a pushrod movement, lead to push rod one between ratchet installing rack and ratchet To effect, the motion making frame for movement is relatively reliable；

Fix, with variator axle, the parking ratchet wheel being connected, parking ratchet wheel is provided with referring to described button of circle distribution The draw-in groove matched, after ratchet is protruding by active force, ratchet rotates around ratchet gyroaxis, and button refers to snap in draw-in groove, parking Locking shaft is no longer able to turn, it is achieved parking；

Return spring, it is arranged on the outside of the first side wall of described ratchet installing rack, and the centre of return spring is middle Spring body, the both sides of return spring stretch out the first torsion bar and the second torsion bar crossed one another, the first side of ratchet installing rack respectively It is protruding protruding with circular arc that the periphery of the outside first gyroaxis installing hole of wall is provided with annulus, and the radius of circular arc projection is convex less than annulus The radius risen, the protruding intermediate formation groove protruding with circular arc of annulus, described middle springs body is stuck on groove, and the first torsion bar is solid Being scheduled on the back of ratchet installing rack, the second torsion bar is fixing with ratchet to be connected.

Further, the front end of described push rod is provided with the opening of vertical direction the first U-type groove outwardly, the first U-type groove Two sidewalls between be hinged with horizontal cylinder the first roller, a part of cylinder of the first roller is exposed at the first U-type groove Outside, when the first roller and ratchet projection contacts, the first roller rotates, and frictional force reduces, and makes push rod promote the action of ratchet More smooth and easy.

Further, the quantity of described first roller is two, arranges two the first rollers than single first roller Frictional force is less.

Further, on described push rod, the part near push rod front end is provided with spacer pin, and putting back-end sequentially passes through limit The swivel joint of fit on annular after circle of position ring and spring, the lower end of swivel joint is connected with rocking arm, and spacing annulus is against limit On the pin of position, spring is against on spacing annulus, and swivel joint can slidably reciprocate on push rod, and swivel joint is to push rod nose motion Time swivel joint spring is applied external force, spring-compressed, after spring-compressed, external force is passed to successively spacing annulus, spacer pin, External force passes to push rod the most at last, and push rod promotes ratchet.

Further, the lower end of described swivel joint is provided with the first cylinder, and the first cylindrical outside is provided with One is protruding, and described rocking arm is provided with the first through hole that the downward projection figure of lower end with swivel joint is identical, swivel joint Rotating a certain angle after rocking arm from the first through hole, swivel joint can be stuck.

Further, described rocking arm is arranged to wavy shaped configuration away from one end of parking lock axle, the of ratchet installing rack Two side-wall outer side are provided with fixing limiting plate, and limiting plate is arranged to arcuate structure near a section of rocking arm, opening of arcuate structure Mouth, towards ratchet installing rack, arcuate structure is provided with in the middle of one end of rocking arm cylinder second roller of vertical direction, Second roller matches with wavy shaped configuration, and when the position that rocking arm swings is not in place, the second roller on limiting plate is spacing It is rolled under the effect of plate arcuate structure elastic force at the trough of wavy shaped configuration.

Further, described limiting plate is respectively arranged with the first installing hole coordinated with ratchet gyroaxis and for limiting The second installing hole that position plate is fixed on housing, limiting plate is carried out spacing through the first installing hole by ratchet gyroaxis, fixing spiral shell Limiting plate is fixed on housing by nail through the second installing hole.

Further, the centre of described rocking arm is provided with fan groove, and caging bolt is arranged on housing after fan groove, Caging bolt and fan groove coordinate, and limit the hunting range of rocking arm.

Relative to prior art, halting mechanism described in the utility model has the advantage that

(1) this utility model simple in construction, the part simplifying halting mechanism is constituted, and eliminates the chi that how mutual part is Very little cumulative errors, thus improve the braking ability of automobile, the manufacturing cost of this halting mechanism is also greatly reduced simultaneously, adopts Purchasing low cost, reliability is high.

(2) front end of push rod arranges two rollers, reduces push rod and promotes the frictional resistance of ratchet, and push rod promotes ratchet Action is more smooth and easy, reliable.

(3) push rod have employed the structure of swivel joint and spring, when the button of ratchet front end refers to just and on parking ratchet wheel Card cell wall relative to time, ratchet cannot insert in the draw-in groove of ratchet, due between swivel joint with push rod use spring be connected, work as rotation After joint moves into place, push rod can be persistently by the elastic force of spring, and this spring energy accurately ensures when car body slips by slope, parking spine When wheel turns over the distance of a chi thickness, the button of ratchet refers to insert ratchet draw-in groove, completes parking action.

(4) being provided with the through hole identical with the downward projection figure of swivel joint lower end on rocking arm, swivel joint is from through hole Place rotates a certain angle after rocking arm, and swivel joint can be stuck, and this structure is ingenious, assembles simple and quick.

(5) set up the ratchet installing rack of U-shape structure, between ratchet installing rack and ratchet, form the logical of a pushrod movement Road, plays the effect guided to push rod one, and the motion making push rod is relatively reliable.

(6) return spring ensures that ratchet can automatically reset not by push rod active force when, return spring card In toroidal cavity on ratchet installing rack, smart structural design, compact conformation.

(7) wavy shaped configuration of rocking arm is plus the design of limiting plate, it is ensured that rocking arm, can when not swinging to ad-hoc location With automatic in-position.

(8) fan groove, caging bolt and fan groove cooperation are set up in the centre of rocking arm, limit the hunting range of rocking arm.

Accompanying drawing explanation

The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing, and this practicality is new The schematic description and description of type is used for explaining this utility model, is not intended that improper restriction of the present utility model.? In accompanying drawing:

Fig. 1 is the assembling structural representation described in this utility model embodiment；

Fig. 2 is the perspective view described in this utility model embodiment；

Fig. 3 is the ratchet installing rack structural representation described in this utility model embodiment；

Fig. 4 is the pawl structures schematic diagram described in this utility model embodiment.

Description of reference numerals:

1-parking lock axle；2-rocking arm；201-wavy shaped configuration；202-fan groove；203-the first through hole；204-is cylindrical Protruding；3-swivel joint；301-the first cylinder；302-first is protruding；4-spring；The spacing annulus of 5-；6-spacer pin；7-pushes away Bar；8-the first U-type groove；9-the first roller；10-ratchet；101-button refers to；102-ratchet is protruding；103-return spring installing hole； 104-the second gyroaxis installing hole；11-ratchet installing rack；111-the second cuboid；112-the second through hole；113-the first side wall； 114-the second sidewall；115-the first gyroaxis installing hole；116-annulus is protruding；117-circular arc is protruding；118-groove；12-is spacing Plate；121-arcuate structure；122-the first installing hole；123-the second installing hole；13-the second roller；14-ratchet gyroaxis；15-is fixed Circle of position pin；16-return spring；161-the first torsion bar；162-the second torsion bar；163-middle springs body；17-caging bolt；18- Nut；19-locking shaft installing rack；20-variator axle；21-parking ratchet wheel；211-draw-in groove；22-alignment pin；23-the first spiral shell Nail.

Detailed description of the invention

It should be noted that in the case of not conflicting, the embodiment in this utility model and the feature in embodiment can To be mutually combined.

In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " on ", D score, Orientation or the position relationship of the instruction such as "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " are Based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplifies description rather than instruction Hint indication device or element must have specific orientation, with specific azimuth configuration and operation, be not understood that For to restriction of the present utility model.Additionally, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicate Or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, " first ", " second " etc. are defined Feature can express or implicitly include one or more this feature.In description of the present utility model, unless separately Being described, " multiple " are meant that two or more.

In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, on can being understood by concrete condition State term concrete meaning in this utility model.

Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.

As shown in Figures 1 to 4, a kind of halting mechanism, halting mechanism is arranged on inside case of transmission, including ratchet 10, Ratchet 10 is similar to that cross, the top of ratchet 10 are provided with ratchet projection 102, and ratchet 10 is provided with return spring Installing hole 103, the bottom of ratchet 10 is provided with button and refers to 101, peace in the other end of second gyroaxis installing hole 104 of ratchet 10 Equipped with ratchet gyroaxis 14, ratchet 10 can rotate around ratchet gyroaxis 14.A part for ratchet 10 is embedded in the spine of U-shape structure Pawl installing rack 11 is internal.It is respectively arranged with first time on the first side wall 113 of ratchet installing rack 11 and the downside of the second sidewall 114 Rotating shaft installing hole 115, ratchet gyroaxis 14 put ratchet 10 after the left and right sides load onto cushion block respectively after load onto ratchet installing rack 11, The two ends of ratchet gyroaxis 14 are fixed respectively with case of transmission.The back of ratchet installing rack 11 is provided with second near leading section Cuboid 111, is provided with, in the middle of the second cuboid 111, the second through hole 112 arranged along its length, and setting circle pin 15 passes It is connected with case of transmission after second through hole 112, between ratchet installing rack 11 and ratchet 10, forms the logical of push rod 7 motion Road, the effect guided to push rod 7 one, the motion making this structure is relatively reliable.

The periphery of the outside first gyroaxis installing hole 115 of the first side wall 113 of ratchet installing rack 11 is provided with interrupted circle Ring protruding 116 and circular arc projection 117, the radius of circular arc projection 117 is less than the radius of annulus projection 116, annulus protruding 116 and circle The intermediate formation groove 118 of arc projection 117, the middle springs body 163 of return spring 16 is stuck on groove 118, return spring 16 On the first torsion bar 161 and the second torsion bar 162 cross one another, the first torsion bar 161 is fixed on the back of ratchet installing rack 11, second Torsion bar 162 is fixing with ratchet 10 in inserting the return spring installing hole 103 on ratchet 10 to be connected, when need not parking, and push rod 7 Retreating, ratchet 10 resets under the effect of return spring 16.

One end of rocking arm 2 is provided with cylindrical protrusions 204, and cylindrical protrusions 204 is provided with the installation of parking lock axle 1 Hole, parking lock axle 1 positions with alignment pin 22 after inserting the installing hole of parking lock axle 1, and the lower end of parking lock axle 1 is installed Nut 18, locking shaft installing rack 19 is pressed on housing, and parking lock axle 1 is arranged on housing by locking shaft installing rack 19, stays Car locking shaft 1 can rotate in locking shaft installing rack 19.Rocking arm 2 is mutually perpendicular to the axis of parking lock axle 1, on rocking arm 2 The other end of position of rocking arm 2 is provided with push rod 7.The front end of push rod 7 is provided with the opening of a vertical direction U outwardly Type groove 8, is hinged with two horizontal cylinder the first rollers 9, of the first roller 9 between two sidewalls of the first U-type groove 8 Cyclotomy cylinder is exposed at outside the first U-type groove 8, and when the first roller 9 contacts with ratchet protruding 102, the first roller 9 rotates, friction Power reduces, and makes push rod 7 promote the action of ratchet 10 more smooth and easy.On push rod 7, the part near push rod 7 front end is provided with spacer pin 6, Push rod 7 rear end sequentially passes through fit on swivel joint 3 after spacing annulus 5 and spring 4, and the structure of swivel joint 3 is hollow circle Ring, push rod 7 has the stopping means of swivel joint 3, the lower end of swivel joint 3 are connected with rocking arm 2, and spacing annulus 5 is against spacing On pin 6, spring 4 is against on spacing annulus 5, and swivel joint 3 can slidably reciprocate on push rod 7, and swivel joint 3 is before push rod 7 During end motion, swivel joint 3 applies external force to spring 4, and spring 4 compresses, and external force passes to after spring 4 compression spacing circle successively Ring 5, spacer pin 6, external force passes to push rod 7 the most at last, and push rod 7 promotes ratchet.

The torus lower end of swivel joint 3 is provided with the first cylinder 301, and the outside of the first cylinder 301 is towards push rod The direction of front end is provided with the first projection 302, rocking arm 2 is provided with protruding with the first cylinder 301 and first of swivel joint 3 The first through hole 203 that the downward projection figure of 302 is identical, swivel joint 3 rotates one at the first through hole 203 after rocking arm 2 Fixed angle, swivel joint 3 can be stuck.

Rocking arm 2 is arranged to wavy shaped configuration 201 away from one end of parking lock axle 1, the second sidewall of ratchet installing rack 11 It is provided with fixing limiting plate 12 outside 114, limiting plate 12 is respectively arranged with the first peace coordinated with ratchet gyroaxis 14 5 Filling hole 122 and for the second installing hole 123 being fixed on housing by limiting plate 12, ratchet gyroaxis 14 is through the first installing hole Limiting plate 12 is carried out spacing by 122.Limiting plate 12 is fixed on housing by fixing screw through the second installing hole 123.Limiting plate 12 are fixed on ratchet installing rack 11 by the first screw 23.Limiting plate 12 is arranged to arcuate structure near a section of rocking arm 2 121, the opening of arcuate structure 121, towards ratchet installing rack 11, arcuate structure 121 is provided with in the middle of one end of rocking arm 2 Cylinder second roller 13 of vertical direction, the second roller 13 matches with wavy shaped configuration 201, when the position that rocking arm 2 swings Time not in place, the second roller 13 on limiting plate 12 is rolled to waveform under the effect of limiting plate 12 arcuate structure 121 elastic force At the trough of structure 201.

The centre of rocking arm 2 is provided with fan groove 202, and caging bolt 17 is arranged on housing after fan groove 202, spacing Bolt 17 and fan groove 202 coordinate, and limit the hunting range of rocking arm 2.

Parking ratchet wheel 21 and variator axle 20 is fixing to be connected, parking ratchet wheel 21 is provided with circle distribution with described Button refers to 101 draw-in grooves 211 matched.

Operation principle of the present utility model:

After driver sends parking instruction, parking motor produces moment of torsion；Parking lock axle 1 drives under the effect of moment of torsion Rocking arm 2 carries out gyration, and under the effect of swivel joint 3, the gyration of rocking arm 2 is changed into the linear motion of push rod 7.Spine The effect of pawl 10 drawn stem 7 front end the first roller 9, rotates around ratchet gyroaxis 14.The button of ratchet 10 front end refers to 101 insertion parkings In the draw-in groove 211 of ratchet 21, variator axle 20 is locked, and parking action completes.

When parking, probability is had to occur because ratchet 10 front end button refers to that 101 is the most relative with the card cell wall of parking ratchet wheel 21, spine Pawl 10 cannot insert the situation in the draw-in groove 211 of ratchet.Now, owing to using spring 4 to be connected between swivel joint 3 with push rod 7, when After swivel joint 3 moves into place, push rod 7 can be persistently by the elastic force of spring 4, and this spring energy accurately ensures when car body slips Slope, when parking ratchet wheel 21 turns over a chi thickness distance, ratchet can insert ratchet draw-in groove 211, completes parking action.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this Within the spirit of utility model and principle, any modification, equivalent substitution and improvement etc. made, should be included in this utility model Protection domain within.

Claims (8)

1. a halting mechanism, halting mechanism is arranged on inside case of transmission, it is characterised in that: including:

Rocking arm (2), its one end is fixedly connected with parking lock axle (1) orthogonal with it, and rocking arm (2) is near other end of Top is provided with hinged with it and orthogonal push rod (7), and the length direction of push rod (7) stretches out；

Being similar to the ratchet (10) of decussate texture, described ratchet (10) is turned round by ratchet near one end of described rocking arm (2) The sidewall of the ratchet installing rack (11) of axle (14) and the U-shaped structure lower hinge near rocking arm (2), ratchet gyroaxis (14) puts The first side wall (113) of ratchet installing rack (11) and the of the second sidewall (114) lower end it is each passed through after ratchet (10) and cushion block Single-revolution axle installing hole (115) is fixing with case of transmission to be connected, and the back of ratchet installing rack (11) is provided with near leading section Second cuboid (111), is provided with the second through hole (112) arranged along its length, setting circle in the middle of the second cuboid (111) Pin (15) is connected with case of transmission afterwards through the second through hole (112)；

Spine has been extended above near one end of ratchet installing rack (11) towards it away from ratchet gyroaxis (14) on described ratchet (10) Pawl is protruding (102), and ratchet (10) stretches towards its obliquely downward near one end of parking ratchet wheel (21) away from ratchet gyroaxis (14) Having button to refer to (101), form a space between ratchet (10) and described ratchet installing rack (11), described push rod (7) is in institute Slidably reciprocating in stating space, when push rod (7) moves to extreme position, the front end of push rod (7) promotes ratchet protruding (102)；

The parking ratchet wheel (21) that be connected fixing with variator axle (20), parking ratchet wheel (21) is provided with circle distribution with Described button refers to the draw-in groove (211) (101) matched；

Return spring (16), it is arranged on the outside of the first side wall (113) of described ratchet installing rack (11), return spring (16) Centre be middle springs body (163), the both sides of return spring (16) stretch out the first torsion bar (161) crossed one another and respectively Two torsion bars (162), the periphery of the outside first gyroaxis installing hole (115) of the first side wall (113) of ratchet installing rack (11) is arranged Having annulus protruding (116) and circular arc protruding (117), the radius of circular arc protruding (117) is less than the radius of annulus protruding (116), circle Ring protruding (116) and the intermediate formation groove (118) of circular arc protruding (117), described middle springs body (163) is stuck in groove (118) on, the first torsion bar (161) is fixed on the back of ratchet installing rack (11), and the second torsion bar (162) is fixing with ratchet (10) even Connect.

Halting mechanism the most according to claim 1, it is characterised in that: the front end of described push rod (7) is provided with vertical direction Opening the first U-type groove (8) outwardly, be hinged with horizontal cylinder the first roller between two sidewalls of the first U-type groove (8) (9), a part of cylinder of the first roller (9) is exposed at the first U-type groove (8) outside.

Halting mechanism the most according to claim 2, it is characterised in that: the quantity of described first roller (9) is two.

Halting mechanism the most according to claim 1, it is characterised in that: the upper portion near push rod (7) front end of described push rod (7) Setting up separately and be equipped with spacer pin (6), push rod (7) rear end sequentially passes through spacing annulus (5) and spring (4) fit on cirque structure afterwards Swivel joint (3), the lower end of swivel joint (3) is connected with rocking arm (2), and spacing annulus (5) is against on spacer pin (6), spring (4) Being against on spacing annulus (5), swivel joint (3) can slidably reciprocate on push rod (7), and swivel joint (3) is to push rod (7) front end During motion, swivel joint (3) applies external force to spring (4), and spring (4) compresses.

Halting mechanism the most according to claim 4, it is characterised in that: the lower end of described swivel joint (3) is provided with first Cylinder (301), the outside of the first cylinder (301) is provided with first protruding (302), described rocking arm (2) is provided with and revolves The first through hole (203) that the downward projection figure of the lower end of adaptor (3) is identical.

Halting mechanism the most according to claim 1, it is characterised in that: described rocking arm (2) is away from the one of parking lock axle (1) End is arranged to wavy shaped configuration (201), and the second sidewall (114) outside of ratchet installing rack (11) is provided with fixing limiting plate (12), one section of the close rocking arm (2) of limiting plate (12) is arranged to arcuate structure (121), and the opening of arcuate structure (121) is towards spine Pawl installing rack (11), the upper cylinder second being provided with vertical direction in the middle of one end of rocking arm (2) of arcuate structure (121) is rolled Son (13), the second roller (13) matches with wavy shaped configuration (201).

Halting mechanism the most according to claim 6, it is characterised in that: described limiting plate is respectively arranged with and ratchet on (12) The first installing hole (122) that gyroaxis (14) coordinates and for the second installing hole that limiting plate (12) is fixed on housing (123)。

Halting mechanism the most according to claim 1, it is characterised in that: the centre of described rocking arm (2) is provided with fan groove (202), caging bolt (17) is arranged on housing after fan groove (202).