CN106969140B - The supporting structure of vehicle parking device and parking axis - Google Patents
The supporting structure of vehicle parking device and parking axis Download PDFInfo
- Publication number
- CN106969140B CN106969140B CN201610838303.XA CN201610838303A CN106969140B CN 106969140 B CN106969140 B CN 106969140B CN 201610838303 A CN201610838303 A CN 201610838303A CN 106969140 B CN106969140 B CN 106969140B
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- Prior art keywords
- parking
- axis
- hole
- hole portion
- pivotally supported
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 32
- 210000000078 claw Anatomy 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 description 15
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
- General Details Of Gearings (AREA)
- Braking Elements And Transmission Devices (AREA)
Abstract
The present invention provides the supporting structure of vehicle parking device and parking axis, and braking device for vehicle can inhibit the heavily stressed generation for the case of transmission being pivotally supported around hole.Vehicle includes parking gear (4) with parking device；Case of transmission (1A), with lug boss (12)；Parking is supported in being pivotally supported in hole (10) in lug boss (12) upper opening with axis (6)；And parking bar (5), it can be supported swingingly in parking axis (6).It is pivotally supported hole (10) and includes the 1st hole portion (15), extend along the axis direction (CL1), and be connected with the open end (14) for being pivotally supported hole (10)；And the 2nd hole portion (16), the lateral edge axis direction (CL1) extends inwards than the 1st hole portion (15) for it, the terminal part for supporting parking axis (6) is circumferentially provided with gap (101) entire between the inner peripheral surface of the 1st hole portion (15) and the outer peripheral surface of parking axis (6).
Description
Technical field
The present invention relates to the supporting structures of vehicle parking device and parking axis with park lock mechanism.
Background technique
In the past, there is known such vehicle parking devices: parking bar can be supported swingingly in being installed on speed changer
On the parking axis of shell, park lock is set to work by engaging the claw of parking bar with parking gear.As this dress
It sets, such as device described in Patent Document 1 opens up the end insertion for parking axis on case of transmission and is pivotally supported hole, and
Hole and parking are being pivotally supported with rubber bushing is clamped between axis, is supporting parking axis from case of transmission across rubber bushing.
Existing technical literature
Patent document 1: Japanese Unexamined Patent Publication 6-72295 bulletin
Summary of the invention
In addition, as the supporting structure of parking axis, preferably becoming because generally case of transmission is required to be thinning
Fast device shell is provided projectingly lug boss, and opens up on lug boss and be pivotally supported hole.But in park lock work, with vehicle
The corresponding bending force of weight acts on parking axis via parking bar, therefore when passing through lug boss bearing parking axis
When, it is possible to high stress is generated in lug boss.Hole and parking axis are being pivotally supported especially as device described in Patent Document 1
Between clamp in the structure of rubber bushing, need to increase the diameter for being pivotally supported hole, correspondingly, the wall thickness of lug boss is thinning, is easy
Generate high stress.
Vehicle parking device as one embodiment of the present invention, which is characterized in that the vehicle is included with parking device
Parking gear is set in the rotary shaft to link with driving wheel；Housing parts, with lug boss；Parking axis is propped up
It holds in being pivotally supported in hole in lug boss upper opening；And parking bar, it can be supported swingingly on parking axis and having
Claw, the claw engage with parking gear in the locked state, release the engaging with parking gear in the unlocked state, are pivotally supported
Hole includes the 1st hole portion, extends in the axial direction, and is connected with the open end for being pivotally supported hole；And the 2nd hole portion, than
Lateral edge axis direction extends 1 hole portion inwards, supports parking the tip of the axis portion, in the inner peripheral surface and parking axis of the 1st hole portion
Gap is circumferentially provided with entire between outer peripheral surface.
In addition, one embodiment of the present invention is the supporting structure of parking axis, utilizes and be provided projectingly from shaft supporting part
Lug boss come be supported on park lock work when or parking braking work when be applied bending force corresponding with vehicle weight
Parking axis, which is characterized in that lug boss offer for parking axis end insertion be pivotally supported hole, be pivotally supported hole tool
Have: the 1st hole portion extends in the axial direction, and is connected with the open end for being pivotally supported hole；And the 2nd hole portion, than the 1st hole
Lateral edge axis direction extends inwards in portion, parking the tip of the axis portion is supported, in the inner peripheral surface of the 1st hole portion and the periphery of parking axis
Complete cycle gap is provided between face.
According to the present invention, the hole that is pivotally supported being provided on lug boss has the 1st hole portion being connected with open end and the 1st hole
2nd hole portion of portion inboard, with the 2nd hole portion support parking axis, and the outer peripheral surface of the inner peripheral surface of the 1st hole portion and parking axis it
Between complete cycle be provided with gap.Thus, it is possible to inhibit park lock work when or parking braking work when bending force act on
It is caused to generate high stress at lug boss with axis in parking.
Detailed description of the invention
Fig. 1 is the internal structure for showing the automatic transmission for the vehicle parking device for being assembled with embodiments of the present invention
Main view.
Fig. 2 is the cross-sectional view of the II-II line in Fig. 1.
Fig. 3 is the park lock mechanism in the vehicle parking device summarily shown applied to embodiments of the present invention
Structure figure.
Fig. 4 is the enlarged drawing in the portion IV in Fig. 2.
Fig. 5 is the perspective view for showing the structure of the lug boss in Fig. 4.
Fig. 6 is the figure for showing the state for the case of transmission that right side is omitted from Fig. 4.
Fig. 7 A is the figure for showing the parsing result of the maximum stress relative to gap lengths.
Fig. 7 B is the figure for showing the parsing result of the maximum deflection relative to gap lengths.
Label declaration
1A, 1B: case of transmission；2: rotary shaft；4: parking gear；5: parking bar；6: parking axis；10,11: being pivotally supported
Hole；12,13: lug boss；15: the 1 hole portions；16: the 2 hole portions；51: claw；101: gap.
Specific embodiment
Referring to FIG. 1 to FIG. 7 B, embodiments of the present invention will be described.Fig. 1 is to show to be assembled with reality of the invention
The main view of the internal structure (a part of internal structure) of the automatic transmission of the vehicle parking device of mode is applied, Fig. 2 is
The cross-sectional view of the speed changer of II-II line in Fig. 1.
In addition, infra for convenient, and orthogonal 3 axis (X-axis, Y-axis, the Z of scenario 3 mutually orthogonal dimensions as illustrated
Axis), and X-direction is defined as front-rear direction, Y direction is defined as to left and right directions, Z-direction is defined as upper and lower
To, and illustrate according to this definition the structure in each portion.Front-rear direction, left and right directions and up and down direction are respectively equivalent to such as vehicle
Length direction, vehicle width direction and vehicle-height direction.
As shown in Figure 1, 2, automatic configured with constituting in the inner space 100 of case of transmission 1A, 1B of pair of right and left
Multiple rotary shafts 2 of speed changer.Rotary shaft 2 includes: input shaft, is entered the power from power source (such as engine)；
Output shaft, to driving wheel output power；And jackshaft, it is configured at the power transmission line from input shaft to output shaft
Halfway.These rotary shafts 2 extend in left-right direction respectively, and are parallel to each other.The transmitting of the power such as gear is provided in rotary shaft 2
The power of element 3, power source is transmitted to driving wheel via power transmitting elements 3, thus vehicle driving.
The vehicle of present embodiment has park lock mechanism with parking device, and the rotation of rotary shaft 2 is parked locking machine
Structure locking or unlock.Park lock mechanism includes parking gear 4, is set to the defined rotary shaft 2 with driving wheel linkage
On (such as jackshaft)；And parking bar 5, substantially extend along the longitudinal direction, and at its end portion (front end) be provided with
The claw 51 that parking gear 4 engages.It links in addition, parking gear 4 also can be set in input shaft or output shaft etc. and driving wheel
Other rotary shafts 2 on.
Fig. 3 is the figure for summarily showing the structure of park lock mechanism.As shown in Figure 2,3, it is opened in the base end part of parking bar 5
Equipped with through hole 52, the axis CL1 in through hole 52 in left-right direction (is also claimed sometimes below inserted with parking axis 6
For " parking axis ").Parking bar 5 is supported to be that fulcrum is swung to the direction arrow R1, R2 of Fig. 3 with parking axis 6 as a result,.
As shown in figure 3, the supporting part in parking bar 5 is clamped with spring 53.Thus, parking bar 5 is always by spring 53 to R2
Direction, that is, parking bar 5 claw 51 exerts a force from the isolated direction of parking gear 4 (lower section).In addition, parking bar 5 utilizes driving mechanism
7 can be mobile close to the direction (top) of parking gear 4 to the direction R1, that is, parking bar 5 claw 51.
Driving mechanism 7 has parking cam 71, which is arranged in the lower end of the terminal part of parking bar 5
Slide the advance and retreat of axis CL2 in left-right direction in face 54.Parking cam 71 has the circular conical surface 71a centered on axis CL2.Circle
The diameter of conical surface 71a for example becomes larger towards left, and parking cam 71 is integrally conical shape.Parking cam 71 is transmitted via power
Mechanism 72 is connect with actuator 73 (such as the electric motor for capableing of positive and negative rotation).The power of actuator 73 is via power as a result,
Transmission mechanism 72 is transmitted to parking cam 71, and parking cam 71 is retreated in the lateral direction according to the driving of actuator 73
It is mobile.Actuator 73 is driven according to the operation of gear lever (not shown).Gear lever can be operated such as D by driver
(advance) gear, R (reversing) gear, N (sky) gear, P (parking) gear etc..The operation of gear lever is transmitted to speed change via such as cable etc.
Device.In addition it is also possible to the gear lever for the line traffic control shift mode that the mechanical connection for being configured to operating system and speed changer is disconnected, and
The operation of electro-detection gear lever.
When gear lever is operated into P gear, parking cam 71 is moved to the right by the driving of actuator 73.As a result,
Parking cam 71 circular conical surface 71a while being slided on the lower end surface of parking bar 5 54, parking bar 5 overcomes the work of spring 53
Firmly swung to the direction R1.Thus, the claw 51 of parking bar 5 engages with parking gear 4, and park lock mechanism works,
Vehicle becomes lock state with parking device.
When on the other hand, other than gear lever is operated into P gear, parking cam 71 by the driving of actuator 73 to the left
Fang Yidong.Parking bar 5 is swung by the active force of spring 53 and to the direction R2 as a result, and the claw 51 of parking bar 5 is from parking gear
4 separate and release the engaging of claw 51 with parking gear 4, and the work of park lock mechanism is released from.As a result, vehicle is with staying
Vehicle device becomes unlocked state.
In such vehicle parking device, when carrying out park lock, bending force is from parking gear 4 and claw 51
Engagement site acts on parking axis 6 via parking bar 5.For example, when being the parking on upward slope, rotary force from driving wheel to
The direction arrow R3 of Fig. 3 acts on parking gear 4, and bending force acts on parking axis 6 to the direction arrow A of Fig. 3 as a result,.It is another
Aspect, if arrow R4 direction of the rotary force from driving wheel to Fig. 3 acts on parking gear 4 in the parking on descending, by
This, bending force acts on parking axis 6 to the direction arrow B of the opposite Fig. 3 in the direction A.At this point, vehicle weight is heavier and the gradient more
Suddenly, then the size of bending force is bigger.The supporting structure of parking axis 6 is illustrated below.
Hole 10,11 is pivotally supported as shown in Fig. 2, offering respectively on case of transmission 1A, 1B.The left and right two of parking axis 6
End is inserted in respectively to be pivotally supported in hole 10,11, and thus parking axis 6 is supported by case of transmission 1A, 1B.
Parking axis 6 is made of such as ferrous material, and case of transmission 1A, 1B pass through the aluminium etc. weaker than ferrous material with intensity
For structural material cast form and constitute.
Thus, it is especially needed for case of transmission 1A, 1B to prevent high stress as the supporting structure of parking axis 6.
This point, if increasing the wall thickness of case of transmission 1A, 1B for being pivotally supported around hole 10,11, it will be able to generation height be inhibited to answer
Power.But because this can bring the weight of case of transmission 1A, 1B to increase, not preferably.
Therefore, in order not to cause the weight of case of transmission 1A, 1B to increase, and inhibit to be pivotally supported around hole 10,11
Case of transmission 1A, 1B generate high stress, constitute vehicle parking device in the following manner in the present embodiment.
Fig. 4 is the enlarged drawing in the portion IV in Fig. 2.As shown in figure 4, the inner peripheral surface in case of transmission 1A, 1B is distinguished to the left
Right direction has been provided projectingly lug boss 12,13.Axis CL1 on lug boss 12,13 along left and right directions, which is offered, to be pivotally supported
Hole 10,11.In addition, in the present embodiment, the shape of lug boss 12,13 is mutually different, parking axis 6 is acted in bending force
In the case of, it is particularly susceptible the generation high stress at lug boss 12.Therefore, below mainly to the protrusion of the case of transmission 1A in left side
The structure in portion 12 is illustrated.Fig. 5 is the perspective view for showing the structure of lug boss 12.
As shown in Figure 4,5, being pivotally supported hole 10 has the 1st hole portion 15 conjointly formed with its open end 14 and Bi 1
Hole portion 15 is by inboard the 2nd hole portion 16 formed.1st hole portion 15 and the 2nd hole portion 16 all have the cylindrical shape centered on axis CL1
The inner peripheral surface of shape.The diameter D1 of 1st hole portion 15 is bigger than the diameter D2 of the 2nd hole portion 16, and the 1st hole portion 15 and the 2nd hole portion 16 are via rank
Terraced portion 17 and connect.In addition, the 1st hole portion 15 and the 2nd hole portion 16 are by carrying out machinery to the hole portion 18 formed in cast form
It processes and is formed.Wall thickness of the wall thickness T1 of lug boss 12 around 1st hole portion 15 than the lug boss 12 around the 2nd hole portion 16
T2 is thin.
As shown in figure 4, parking axis 6 is in the cylindrical shape centered on axis CL1.Parking axis 6, which has to be inserted into, to be pivotally supported
Small diameter portion 61 and diameter in hole 10 large-diameter portion 62 bigger than small diameter portion 61, small diameter portion 61 and large-diameter portion 62 via stepped part 63 and
Connection.The diameter D0 of small diameter portion 61 and the diameter D2 of the 2nd hole portion 16 are roughly equal.More specifically, the diameter D0 of small diameter portion 61
Diameter D2 than the 2nd hole portion 16 is slightly smaller, and small diameter portion 61 is embedded in the 2nd hole portion 16 for example, by clearance fit.In addition, major diameter
The case of transmission 1B that portion 62 is embedded in right side for example, by clearance fit is pivotally supported in hole 11.
What small diameter portion 61 was inserted into the through hole 52 of parking bar 5 and then was inserted into case of transmission 1A is pivotally supported hole
In 10.The diameter of the through hole 52 of parking bar 5 is smaller than large-diameter portion 62.Thus, it is pivotally supported in hole 10 parking axis 6 to be inserted into
Under state, the right side 55 of parking bar 5 is abutted with the stepped part 63 of parking axis 6, left side 56 and the lug boss 12 of parking bar 5
Open end 14 abuts.The position relative to case of transmission 1A, 1B of parking bar 5 is defined as a result, and parking axis 6 is inserted
Enter to the insertion depth for being pivotally supported hole 10 and is defined.
Identical as Fig. 4, Fig. 6 is the figure for showing the supporting structure of parking axis 6.In addition, the speed change on right side is omitted in Fig. 6
The diagram of device shell 1B.As shown in fig. 6, in the state that parking axis 6 is inserted into and is pivotally supported in hole 10, the 1st hole portion 15 with
It circumferentially is formed with gap 101 entire between the small diameter portion 61 of parking axis 6, the left part of parking axis 6 is by the 2nd hole of lug boss 12
Portion 16 is supported.
The width in the radial direction of gap 101 (gap length W (=D1-D0)) and the length (gap on the direction axis CL1
Length L) be parking axis 6 when thering is maximum stress in bend Fmax to act on parking axis 6 when being worked according to park lock deflection
Come what is set.Here, maximum deflection power Fmax is the maximum value that the bending force F of parking axis 6 is acted on via parking bar 5, it is root
The value changed according to vehicle weight or road grade etc..In the present embodiment, vehicle weight or road grade etc. are considered in advance
Maximum deflection power Fmax is found out, and maximum deflection power Fmax is additional to by parking axis 6 by experiment or parsing etc., is found out
The deflection of parking axis 6 at that time, to set gap length W and gap lengths L.
More specifically, when bending force acts on parking axis 6 and parking axis 6 is bent, the 1st hole portion 15 and parking axis 6 it
Between peripheral part 19 of the gap 101 on the open end 14 for being pivotally supported hole 10 and parking axis 6 (small diameter portion 61) outer peripheral surface it
Between be minimum at (gap 102).Thus, gap length W and gap lengths L are configured to: having maximum when park lock work
When bending force Fmax acts on parking axis 6, gap 102 substantially 0.Here, substantially 0 refers to ratio such as 0mm greatly and for example
2mm is hereinafter, in 1mm or less or in the such as the following specific length La or less of 0.5mm.
That is, from the viewpoint of the stress for reducing lug boss 12, be preferably pivotally supported the peripheral part 19 in hole 10 not with parking axis 6
It abuts, thus gap 102 is preferably bigger than 0mm.In addition, from the viewpoint of the stress for reducing lug boss 12, preferred lug boss 12
Wall thickness T1 it is thicker, thus, it is specified that value length La preferably small as far as possible after the deviation of dimensional accuracy etc. for considering component.
Via parking bar 5 maximum deflection power Fmax is added in the state of being inserted into and being pivotally supported in hole 10 by parking axis 6
In parking axis 6, and the maximum deflection of the maximum stress Smax and parking axis 6 that generate at this time in lug boss 12 are found out by parsing
Dmax.Fig. 7 A is the figure for showing the parsing result of the maximum stress Smax relative to gap lengths L, and Fig. 7 B is shown relative to sky
The figure of the parsing result of the maximum deflection Dmax of gap length L.
Point A1, A2 in figure are that gap lengths L=0 is being pivotally supported not set gap 101 between hole 10 and parking axis 6
In the case of parsing result (in the case where W=0).When point B1, B2 are gap length W1 (> 0) and gap lengths L1 (> 0)
Parsing result.Parsing result when point C1, C2 are gap length W1 and gap lengths L2 (> L1).In addition, in point B1, B2 and point
In the parsing result of C1, C2, when attached maximum deflection power Fmax to parking axis 6, in the open end 14 for being pivotally supported hole 10
Peripheral part 19 and parking axis 6 outer peripheral surface between produce gap 102.
If being pivotally supported between hole 10 and parking axis 6 does not have gap 101, parking axis 6 is contacted with the opening for being pivotally supported hole 10
Near end face 14, bending force acts on the right part of lug boss 12.Therefore, when gap lengths L is 0, in other words work as gap
When width W is 0, as shown in the point A1 of Fig. 7 A, excessive maximum stress Sa is generated in lug boss 12.
In contrast, if gap 101 (gap length W1) is arranged being pivotally supported between hole 10 and parking axis 6, parking axis 6 exists
It does not contact with lug boss 12 at 1st hole portion 15, and is contacted at the 2nd hole portion 16 with lug boss 12.Therefore, be not provided with gap
101 the case where, is compared, and the generating unit of maximum stress Smax is mobile to the base end side of lug boss 12, results from answering for lug boss 12
Power is dispersed on a large scale.As a result, as shown in point B1, C1 of Fig. 7 A, the maximum stress Smax of lug boss 12 can be made to be reduced to Sb (<
Sa).In this case, as shown in Figure 7 A, maximum stress Smax is reduced if gap lengths L is elongated, but permanent in gap length W
In the state of fixed (=W1), as long as gap lengths L, more than specified value, maximum stress is constant (=Sb).
On the other hand, as shown in Figure 7 B, maximum deflection Dmax is reduced as gap lengths L increases, and is increased later.
That is, maximum deflection Db when being L1 about gap lengths, maximum deflection Da when than gap lengths L=0 is small, and compares gap
Maximum deflection Dc when length is L2 is small.Maximum deflection Dmax is smaller, can will more be used to avoid maximum deflection power Fmax
Parking axis 6 when acting on parking axis 6 be set to gap length W required for the contact of the inner peripheral surface of the 1st hole portion 15 it is smaller,
The wall thickness T1 (Fig. 4) of lug boss 12 can be correspondingly set to thicken.In consideration of it, preferably at most deflection Dmax is smaller.
According to above situation, when setting between the 1st hole portion 15 and parking axis 6, gap length is W1 and gap lengths are
In the case where the gap 101 of L1, as Fig. 7 A, 7B point B1, B2 shown in, maximum stress Smax becomes smaller and maximum deflection Dmax
Become smaller, good result can be obtained.
According to the present embodiment, following such function and effect can be obtained.
(1) vehicle of present embodiment includes parking gear 4 with parking device, is set to the rotation with driving wheel linkage
In shaft 2；Case of transmission 1A, 1B, they have lug boss 12,13；Parking axis 6 is supported on lug boss 12,13
What is opened up is pivotally supported in hole 10,11；And parking bar 5, it can be supported swingingly in parking axis 6 and there is claw 51, the pawl
Portion 51 engages with parking gear 4 in the locked state, releases the engaging with parking gear 4 (Fig. 1,2) in the unlocked state.Axis branch
Bearing bore 10 includes the 1st hole portion 15, extends along the direction axis CL1, and be connected with the open end 14 for being pivotally supported hole 10；And
2nd hole portion 16 extends along the direction axis CL1 in inboard than the 1st hole portion 15, and supports the terminal part (small diameter portion of parking axis 6
61), gap 101 (Fig. 4,6) is provided with to complete cycle between the inner peripheral surface of the 1st hole portion 15 and the outer peripheral surface of parking axis 6.
Gap 101 is set between the 1st hole portion 15 and parking axis 6 in this way, with phase the case where being not provided with gap 101
Than can reduce the maximum stress Smax (Fig. 7 A) of lug boss 12.That is, because being pivotally supported hole 10 in the end of lug boss 12
Inner peripheral surface and parking axis 6 are non-contact, therefore load will not act on the end of lug boss 12 from parking axis 6 and (be pivotally supported hole 10
The open end of inner peripheral surface).Thus, the generating unit of maximum stress is mobile from the end side of lug boss 12 to base end side, convex
It plays the stress that portion 12 generates and disperses wider, can reduce maximum stress Smax.
(2) make the diameter D1 of the 1st hole portion 15 bigger (Fig. 4) than the diameter D2 of the 2nd hole portion 16.Therefore, can make to be inserted into axis
The constant diameter (=D0) of parking axis 6 in support holes 10 and between parking axis 6 and the 1st hole portion 15 be arranged gap 101, structure
It is easy.
(3) make the wall thickness T1 of the lug boss 12 around the 1st hole portion 15 than the wall of the lug boss 12 around the 2nd hole portion 16
Thick T2 is thin (Fig. 4).As a result, about lug boss 12, because thickeing in the position wall thickness contacted with parking axis 6, can reduce
The stress of lug boss 12.
(4) the maximum deflection power Fmax of parking axis 6 is acted on when working according to park lock to set gap 101 in diameter
Length L (Fig. 6) of the upward width W and gap on the direction axis CL1.That is, acting on parking axis 6 in park lock work
Maximum deflection power Fmax changed according to the size of vehicle weight or the gradient, but sky is set according to maximum deflection power Fmax
Gap width W and gap lengths L.Therefore, the with the contact of parking axis 6 is avoided when can be set in effect maximum deflection power Fmax
The optimum size of 1 hole portion 15.
(5) gap length W and gap lengths L are set to: being stayed when there is maximum deflection power to act on when park lock works
When axle 6, it is pivotally supported the gap 102 (Fig. 6) substantially 0 between the opening peripheral part 19 in hole 10 and the outer peripheral surface of parking axis 6.By
This, can be configured to, and when acting on maximum deflection power Fmax, parking axis 6 will not be made to contact with the 1st hole portion 15, and make the 1st hole
The wall thickness T1 of lug boss 12 around portion 15 thickens, and can be effectively reduced the maximum stress Smax of lug boss 12.
(variation)
Above embodiment can be deformed into various modes.Variation is illustrated below.In the above-described embodiment,
Keep the diameter D0 of the small diameter portion 61 of parking axis 6 constant, which is inserted into and is pivotally supported in hole 10, and makes the 1st hole portion
15 diameter D1 is bigger (Fig. 4) than the diameter D2 of the 2nd hole portion 16, but as long as in the inner peripheral surface of the 1st hole portion 15 and the periphery of parking axis 6
Complete cycle direction is provided with gap 101 between face, then the supporting structure of parking axis 6 is without being limited thereto.For example, it is also possible to by parking axis
6 small diameter portion 61, which is configured to band stairstepping, more specifically makes the diameter towards the 1st hole portion 15 of parking axis 6 be configured to compare
The diameter towards the 2nd hole portion 16 of parking axis 6 is small.In this case, the diameter D1 and the 2nd hole portion of the 1st hole portion 15 can be made
16 diameter D2 is equal to each other.
In the above-described embodiment, make the wall thickness T1 of the lug boss 12 around the 1st hole portion 15 than the 2nd hole portion 16 around
Lug boss 12 wall thickness T2 thin (Fig. 4), but the size relation of T1 and T2 is without being limited thereto.In the above-described embodiment, according to staying
The maximum deflection power Fmax of parking axis 6 is acted on when lock works surely to set gap length W and gap lengths L.More specifically
Ground is said, gap length W and gap lengths L is set: so that when there is maximum deflection power Fmax to act on when park lock works
When parking axis 6, it is pivotally supported the gap 102 substantially 0 between the opening peripheral part 19 in hole 10 and the outer peripheral surface of parking axis 6, but empty
The shape setting of gap 101 is without being limited thereto.
In the above-described embodiment, being pivotally supported in hole 10 for case of transmission 1A in left side is provided with 15 He of the 1st hole portion
2nd hole portion 16 (Fig. 4), but hole 11 can also be pivotally supported be pivotally supported the case of transmission 1B for constituting right side in the same manner as hole 10.
That is, can also be with: the 1st hole portion and the 2nd hole portion is arranged being pivotally supported hole 11, the 1st hole portion extends along the direction axis CL1, and and axis
The open end of support holes 11 is connected, and the direction lateral edge axis CL1 extends the 2nd hole portion inwards than the 1st hole portion, supports parking axis 6
Terminal part (large-diameter portion 62), and it is empty in entire circumferential setting between the inner peripheral surface of the 1st hole portion and the outer peripheral surface of parking axis 6
Gap.
The structure of lug boss 12,13 and the structure of case of transmission 1A, 1B with lug boss 12,13 are not limited to above-mentioned
Situation.Engage in the locked state with parking gear 4 in parking axis 6 and having as long as can be supported swingingly and unlocking shape
Under state release with the claw 51 of the engaging of parking gear 4, then the structure of parking bar 5 is also possible to arbitrary structure.In above-mentioned reality
It applies in mode, drives parking cam 71 to swing parking bar 5 by driving mechanism 7, but also can be used convex not comprising parking
71 other driving mechanisms 7 are taken turns swing parking bar 5.
In the above embodiment, in the vehicle with park lock mechanism with parking device especially in parking axis
The present invention is applied in 6 supporting structure, effect is corresponding with vehicle weight or road grade etc. curved when even for parking
The supporting structure of other parking axis of Qu Li, also can be similarly using the present invention.Bending masterpiece corresponding with brake force
For for example by the operation of manual or foot-operated brake bar via the startings such as cable, staying for friction catch class
On the parking axis of vehicle braking, but similarly can be on this parking axis using the present invention.
It, can also be in the protrusion being set to other than case of transmission 1A, 1B as the supporting structure of such parking axis
It is opened up in portion and is pivotally supported hole for what the end of parking axis was inserted into.In this case, as long as having the 1st hole portion and the 2nd hole portion,
Wherein, the 1st hole portion extends in the axial direction, and is connected with the open end for being pivotally supported hole, the 2nd hole portion than the 1st hole portion to
Inboard extends in the axial direction, supports parking the tip of the axis portion, and in the periphery of the inner peripheral surface of the 1st hole portion and parking axis
It circumferentially is provided with gap entire between face, then the structure for being pivotally supported hole is also possible to arbitrary structure.
The present invention is not limited to passenger car, it can also apply to have the various of park lock mechanism or holding brake device
Vehicle (such as working truck etc.).
Above explanation is only an example, as long as not destroying feature of the invention, the present invention not by above-mentioned embodiment and
Variation is limited.Comprising maintaining the identity of invention and can replace in the structural element of above embodiment and variation
And the content that obviously can be replaced.That is, about the other modes expected within the scope of the technical idea of the present invention
It is included within the scope of the present invention.In addition, being capable of any combination above embodiment and 1 or multiple variations.Also can
Variation is combined with each other.
In conclusion the vehicle of present embodiment includes parking gear (4) with parking device, it is set to and driving wheel
In the rotary shaft (2) of linkage；Case of transmission (1A, 1B), with lug boss (12,13)；Parking is supported with axis (6)
It is pivotally supported in hole (10,11) in what is opened up on lug boss (12,13)；And parking bar (5), it can be supported swingingly in staying
Automobile-used axis (6) and there are claw (51), which engages with parking gear (4) in the locked state, and in unlocked state
It is lower releasing with the engaging of parking gear (4), be pivotally supported hole (10) and include the 1st hole portion (15), along the axis direction (L1) extension,
And it is connected with the open end (14) for being pivotally supported hole (10)；And the 2nd hole portion (16), lateral edge axis inwards than the 1st hole portion (15)
The line direction (CL1) extends, and the terminal part of parking axis (6) is supported, in the inner peripheral surface and parking axis (6) of the 1st hole portion (15)
It is provided with to complete cycle between outer peripheral surface gap (101).
In addition, in the present embodiment, the diameter (D1) of the 1st hole portion (15) is bigger than the diameter (D2) of the 2nd hole portion (16).
In addition, in the present embodiment, wall thickness (T1) the 2nd hole portion of ratio of the lug boss (12) around the 1st hole portion (15)
(16) wall thickness (T2) of the lug boss (12) around is thin.
In addition, in the present embodiment, the maximum deflection power of parking axis (6) is acted on when based on park lock work
(Fmax) length (L) of setting gap (101) width in the radial direction (W) and gap (101) on the direction axis (CL1).
In addition, in the present embodiment, the width (W) of gap (101) and the length (L) of gap (101) are configured to: when
When thering is maximum deflection power (Fmax) to act on parking axis (6) in park lock work, it is pivotally supported the opening periphery in hole (10)
Gap (102) substantially 0 between portion (19) and the outer peripheral surface of parking axis (6).
In addition, the supporting structure of the parking of present embodiment axis is to utilize the lug boss being provided projectingly from shaft supporting part
It is used to be applied the parking of bending force corresponding with vehicle weight when being supported on park lock work or when parking braking works
The structure of axis, which is characterized in that offered in lug boss and be pivotally supported hole for what the end of parking axis was inserted into, be pivotally supported hole tool
Have: the 1st hole portion extends in the axial direction, and is connected with the open end for being pivotally supported hole；And the 2nd hole portion, than the 1st hole
Lateral edge axis direction extends inwards in portion, parking the tip of the axis portion is supported, in the inner peripheral surface of the 1st hole portion and the periphery of parking axis
Complete cycle gap is provided between face.
Claims (6)
1. a kind of vehicle parking device comprising:
Parking gear is set in the rotary shaft to link with driving wheel；
Case of transmission, with lug boss；
Parking axis is supported in being pivotally supported in hole in the lug boss upper opening；And
Parking bar, by can be supported swingingly in the parking axis and have claw, the claw in the locked state with
Parking gear engaging, release in the unlocked state with the engaging of the parking gear,
The hole that is pivotally supported includes the 1st hole portion, extends in the axial direction, and is connected with the open end for being pivotally supported hole；
And the 2nd hole portion, axis direction described in lateral edge extends inwards than the 1st hole portion, parking the tip of the axis portion is supported,
Complete cycle gap is provided between the inner peripheral surface of the 1st hole portion and the outer peripheral surface of the parking axis.
2. vehicle parking device according to claim 1, which is characterized in that
The diameter of 1st hole portion is greater than the diameter of the 2nd hole portion.
3. vehicle parking device according to claim 2, which is characterized in that
The wall thickness of the lug boss around 2nd hole portion described in the wall ratio of the lug boss around 1st hole portion
Want thin.
4. vehicle parking device described in any one of claim 1 to 3, which is characterized in that
The maximum deflection power that the parking axis is acted on when based on park lock work sets the gap width in the radial direction
Degree and length of the gap on the axis direction.
5. vehicle parking device according to claim 4, which is characterized in that
The length in the width in the gap and the gap is configured to: when have when park lock works maximum deflection power effect
When the parking axis, the gap being pivotally supported between the opening peripheral part in hole and the outer peripheral surface of the parking axis is 0.
6. a kind of supporting structure of parking axis, is supported on parking lock using the lug boss being provided projectingly from shaft supporting part
The parking axis of bending force corresponding with vehicle weight is applied when working surely or when parking braking works, which is characterized in that
It is offered in the lug boss and is pivotally supported hole for what the end of the parking axis was inserted into,
The hole that is pivotally supported includes the 1st hole portion, extends in the axial direction, and is connected with the open end for being pivotally supported hole；
And the 2nd hole portion, axis direction described in lateral edge extends inwards than the 1st hole portion, parking the tip of the axis portion is supported,
Complete cycle gap is provided between the inner peripheral surface of the 1st hole portion and the outer peripheral surface of the parking axis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-199849 | 2015-10-08 | ||
| JP2015199849A JP2017072203A (en) | 2015-10-08 | 2015-10-08 | Vehicular parking device, and parking shaft support structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106969140A CN106969140A (en) | 2017-07-21 |
| CN106969140B true CN106969140B (en) | 2019-03-01 |
Family
ID=58537134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610838303.XA Expired - Fee Related CN106969140B (en) | 2015-10-08 | 2016-09-21 | The supporting structure of vehicle parking device and parking axis |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2017072203A (en) |
| CN (1) | CN106969140B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019206236A1 (en) * | 2019-04-30 | 2020-11-05 | Zf Friedrichshafen Ag | Housing with two mutually aligned housing parts for a structural unit of a vehicle drive train |
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|---|---|---|---|---|
| US4194518A (en) * | 1978-09-13 | 1980-03-25 | Nissan Motor Company, Limited | Governor having ability of removing dust from working fluid in automatic transmission |
| JPH07205773A (en) * | 1994-01-12 | 1995-08-08 | Jatco Corp | Parking mechanism for automatic transmission |
| FR2798635A1 (en) * | 1999-09-20 | 2001-03-23 | Renault | PARKING BRAKE, IN PARTICULAR FOR AN ELECTRIC TRACTION VEHICLE |
| DE102010043260A1 (en) * | 2010-05-12 | 2011-11-17 | Zf Friedrichshafen Ag | Parking brake device for an automatic transmission of a motor vehicle |
| CN103256384A (en) * | 2012-02-17 | 2013-08-21 | 本田技研工业株式会社 | Park braking device for transmission |
| CN203743412U (en) * | 2013-12-23 | 2014-07-30 | 盛瑞传动股份有限公司 | Parking braking pawl for automatic transmission |
| CN104121361A (en) * | 2013-04-24 | 2014-10-29 | 本田技研工业株式会社 | Parking mechanism for vehicle |
| CN104520614A (en) * | 2012-06-14 | 2015-04-15 | 舍弗勒技术有限两合公司 | Locking device for a gear unit, in particular for a motor vehicle gearbox |
-
2015
- 2015-10-08 JP JP2015199849A patent/JP2017072203A/en active Pending
-
2016
- 2016-09-21 CN CN201610838303.XA patent/CN106969140B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194518A (en) * | 1978-09-13 | 1980-03-25 | Nissan Motor Company, Limited | Governor having ability of removing dust from working fluid in automatic transmission |
| JPH07205773A (en) * | 1994-01-12 | 1995-08-08 | Jatco Corp | Parking mechanism for automatic transmission |
| FR2798635A1 (en) * | 1999-09-20 | 2001-03-23 | Renault | PARKING BRAKE, IN PARTICULAR FOR AN ELECTRIC TRACTION VEHICLE |
| DE102010043260A1 (en) * | 2010-05-12 | 2011-11-17 | Zf Friedrichshafen Ag | Parking brake device for an automatic transmission of a motor vehicle |
| CN103256384A (en) * | 2012-02-17 | 2013-08-21 | 本田技研工业株式会社 | Park braking device for transmission |
| CN104520614A (en) * | 2012-06-14 | 2015-04-15 | 舍弗勒技术有限两合公司 | Locking device for a gear unit, in particular for a motor vehicle gearbox |
| CN104121361A (en) * | 2013-04-24 | 2014-10-29 | 本田技研工业株式会社 | Parking mechanism for vehicle |
| CN203743412U (en) * | 2013-12-23 | 2014-07-30 | 盛瑞传动股份有限公司 | Parking braking pawl for automatic transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017072203A (en) | 2017-04-13 |
| CN106969140A (en) | 2017-07-21 |
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