JP2022088011A - Vehicular parking device - Google Patents

Abstract

To provide a vehicular parking device which has a simple structure while reducing power consumption.SOLUTION: A vehicular parking device (1) includes: a driving source (5); a first shaft (10) which advances/retreats between a first position corresponding to a parking lock state and a second position corresponding to a parking lock release state in a first linear direction (X); a second shaft (20) which advances/retreats between a third position corresponding to the first position and a fourth position corresponding to the second position in a second direction (Y) by interlocking with the advancing/retreating of the first shaft; a link section (30) which is connected to the first shaft through a first joint section (15) and transitions in posture between a first posture corresponding to the first position and a second posture corresponding to the second position; a lever section (40) which guides advancing/retreating of the second shaft by being connected to the second shaft, being connected to the link section through the other second joint section (35), and rotating while interlocking with the transition of the posture of the link section; and a regulation section (50) which regulates the movement of the first shaft in a direction opposite to a direction directed to the second position when the first shaft is positioned at the first position.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a vehicle parking device.

With the progress of electrification and by-wire of vehicles, there is an increasing need for a mechanism that cuts off or reduces power transmission from the driven member to the driven member while transmitting power from the driven member to the driven member. Above all, such a mechanism is required in a vehicle parking device. The vehicle parking device mainly includes a parking gear that rotates integrally with the wheel, a park pole (lock pole) that can be engaged with the parking gear, and a parking rod that guides the operation of the park pole. By operating the actuator in response to the operation of the shift switch, parking switch, etc. by the driver, the parking rod is operated, the park pole is engaged with the parking gear, and the rotation of the wheel is mechanically stopped. It is something to blame.

Regarding such a vehicle parking device, Patent Document 1 discloses a vehicle parking device including a parking actuator that operates a parking rod and a holding actuator that prevents the parking rod from moving.

Patent Document 2 discloses a parking device that regulates the movement of a piston rod (corresponding to the above-mentioned parking rod) by a magnetic unit while executing an operation in a parking lock state or a parking lock release state by a hydraulic unit. There is.

Patent Document 3 discloses a parking device that regulates the rotation of the detent rotation plate by a detent spring while performing shift switching between a parking position and a non-parking position by an electric motor.

Japanese Unexamined Patent Publication No. 2020-45991 Japanese Unexamined Patent Publication No. 2019-60390 Japanese Unexamined Patent Publication No. 2012-31902

Since the vehicle parking device disclosed in Patent Document 1 uses both a parking actuator and a holding actuator in combination, there is a problem that the structure of the entire device is complicated and the power consumption of the entire device is increased. .. Similarly, the parking device disclosed in Patent Document 2 also has a problem that the structure of the entire device is complicated and the power consumption of the entire device is increased because the hydraulic unit and the magnetic unit are used in combination.

Further, in the parking device disclosed in Patent Document 3, when functioning as a parking device, it is necessary to output power for rotating the detent rotation plate against the spring force of the detent spring from the electric motor. There is a problem that the power consumption of the parking device as a whole may increase.

Therefore, various embodiments are provided to provide a vehicle parking device having a simple structure while reducing power consumption.

The vehicle parking device according to one embodiment is connected to a drive source and an output shaft of the drive source, and has a first position corresponding to a parking lock state and a second position corresponding to a parking lock release state in a first straight line direction. The first axis that advances and retreats to and from the position and the first axis that extends in a direction different from the first linear direction in conjunction with the advance and retreat of the first axis in the first linear direction. A second axis that advances and retreats between a third position corresponding to the first position and a fourth position corresponding to the second position of the first axis, and one end thereof via at least the first joint portion. By being connected to one axis, the first posture corresponding to the first position of the first axis and the second position corresponding to the second position of the first axis are associated with the advancement and retreat of the first axis. A link portion whose posture changes between the posture and one end is connected to the second axis, and the other end is connected to the link portion via a second joint portion, which is linked to the transition of the posture of the link portion. When the lever portion that guides the advancement and retreat of the second axis and the first axis are located at the first position, the direction of the first axis is opposite to the direction toward the second position. It is equipped with a regulatory unit that regulates movement in a direction.

According to the vehicle parking device having this configuration, the structure related to the power transmission path from the drive source to the second shaft can be simplified, so that the power consumption can be efficiently reduced. In addition, with this configuration, even if some power (reverse input) is input to the second axis when the first axis is located at the first position without using a separate actuator or the like, it is restricted. The transition of the posture of the link portion is regulated by the portion (the posture of the link portion is maintained in the first posture), and as a result, the first axis can be kept in the first position, so that the reverse input is driven. It is possible to block or reduce transmission to the source.

Further, in the vehicle parking device according to one aspect, the regulation unit is provided on a housing accommodating the drive source.

With this configuration, it is possible to easily provide a regulatory unit without a complicated configuration.

Further, in the vehicle parking device according to one aspect, the first posture is formed between the first line extending in the first straight line direction and the second line extending from the other end of the link portion to one end. It is a posture in which the angle is 90 degrees or less.

With this configuration, when the first axis is located at the first position, even if a reverse input is input to the second axis, the transition of the posture of the link portion can be reliably regulated by the regulating portion (link). The posture of the part can be maintained in the first posture). As a result, even if the reverse input is input to the second axis, the first axis can be kept in the first position, so that the transmission of the reverse input to the drive source can be blocked or reduced.

Further, in the vehicle parking device according to one aspect, the first joint portion is a through pin that penetrates the first axis in a direction orthogonal to the first straight line direction, and the through pin is the restriction. By abutting on the portion, the movement of the first axis located at the first position in the direction opposite to the direction toward the second position is restricted.

With this configuration, the link portion can change its posture in conjunction with the advance / retreat of the first axis in the first linear direction, and when the first axis is located at the first position, the link portion is linked. The transition of the posture of the part can be surely regulated by the regulation part (the posture of the link part can be maintained in the first posture).

Further, in the vehicle parking device according to one aspect, the link portion is formed of a first link portion and a second link portion, and one end of the first link portion and one end of the second link portion are described above. The other end of the first link portion and the other end of the second link portion are connected to the through pin via a bearing, and the other end of the second link portion is connected by a connecting pin as the second joint portion. It is connected to the connecting pin.

With this configuration, the link portion can reliably change the posture between the first posture and the second posture in conjunction with the advance / retreat of the first axis in the first straight line direction. Further, with this configuration, the lever portion can be reliably rotated in conjunction with the transition of the posture of the link portion, and as a result, the advance / retreat of the second axis can be guided.

Further, in the vehicle parking device according to one aspect, the drive source is a motor, and a conversion mechanism for converting the rotation of the motor into a linear motion in the first linear direction is provided on the first axis. It will be provided.

With this configuration, it is possible to reliably transmit the power derived from the motor to the second shaft.

According to various embodiments, it is possible to provide a vehicle parking device having a simple structure while reducing power consumption.

It is a schematic diagram schematically showing the structure of the vehicle parking device which concerns on one Embodiment. It is a schematic diagram schematically showing the structure of the vehicle parking device which concerns on one Embodiment. It is a schematic diagram schematically showing the configuration of a part of the vehicle parking device according to one embodiment in an enlarged manner. It is schematic cross-sectional view which shows the structure of a part of the parking lot for vehicles which concerns on one Embodiment in an enlarged manner. It is a schematic side view which shows the structure of a part of the parking lot for vehicles which concerns on one Embodiment in an enlarged manner. It is a schematic diagram schematically showing the configuration of a part of the vehicle parking device according to one embodiment in an enlarged manner. It is schematic cross-sectional view which shows the structure of a part of the parking lot for vehicles which concerns on one Embodiment in an enlarged manner. It is a schematic side view which shows the structure of a part of the parking lot for vehicles which concerns on one Embodiment in an enlarged manner. 6 is a schematic top view schematically showing a cross section of the vehicle parking device shown in FIG. 6 taken along the line AA in FIG. It is a schematic diagram schematically showing the structure of the vehicle parking device which concerns on 2nd Embodiment. It is the schematic which shows typically the structure of the parking device for a vehicle which concerns on the modification in the case of using an electromagnetic actuator as a drive source. It is a schematic diagram schematically showing the structure of the parking device for a vehicle which concerns on the modification when the feed screw mechanism is a linear motion conversion mechanism. It is a schematic diagram which shows the structure of the vehicle parking device which concerns on one Embodiment, and shows the state which a park pole cannot engage with a parking gear.

Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. The same reference numerals are given to the common constituent requirements in the drawings. It should also be noted that the components represented in one drawing may be omitted in another drawing for convenience of explanation. Furthermore, it should be noted that the attached drawings are not always drawn to the correct scale.

1. 1. Configuration of Vehicle Parking Device An outline of the overall configuration of the vehicle parking device according to the embodiment will be described with reference to FIGS. 1 to 9. 1 and 2 are schematic views schematically showing the configuration of the vehicle parking device 1 according to the embodiment. 3 and 6 are schematic views schematically showing an enlarged configuration of a part of the vehicle parking device 1 according to the embodiment. 4 and 7 are schematic cross-sectional views schematically showing an enlarged configuration of a part of the vehicle parking device 1 according to the embodiment. 5 and 8 are schematic side views schematically showing an enlarged configuration of a part of the vehicle parking device 1 according to the embodiment. FIG. 9 is a schematic top view schematically showing a cross section of the vehicle parking device 1 shown in FIG. 6 along the line AA in FIG.

Note that FIGS. 1 and 3 to 5 show a vehicle parking device 1 in a parking lock unlocked state, and the first axis 10 (and the first joint portion 15 described later) described later is in the second position. , It is shown that the second axis 20 described later is located at the fourth position. On the other hand, FIGS. 2 and 6 to 9 show a vehicle parking device 1 in a parking locked state, in which the first axis 10 (first joint portion 15) is in the first position and the second axis 20 is in the first position. It is indicated that it is located in the third position.

As shown in FIG. 1, the vehicle parking device 1 according to one embodiment mainly includes a drive source 5, a first shaft 10 connected to an output shaft 6C of the drive source 5, a second shaft 20, and a second shaft 20. One end is connected to the link portion 30 connected to the first shaft 10 via the first joint portion 15, and one end is connected to the second shaft 20 and the other end is connected to the link portion 30 via the second joint portion 35. The lever portion 40 and the regulation portion 50 are included as constituent elements. Further, the vehicle parking device 1 according to the embodiment can engage with the parking gear 60 that rotates integrally with the wheels (not shown) and the parking gear 60, similarly to the known vehicle parking device 1. Park pole 70 and. Hereinafter, details of each component of the vehicle parking device 1 according to the embodiment will be described.

1-1. Drive source 5
As the drive source 5, as an example, as shown in FIG. 4, a general motor mainly composed of the stator 6A, the rotor 6B, the output shaft 6C, and the housing 7 can be used. A first shaft 10, which will be described in detail later, is connected to the output shaft 6C.

When a motor is used as the drive source 5, the operation of the motor is controlled by an electronic control device (not shown). For example, when an operation of a shift switch, a parking switch, or the like by a driver is input, the first axis The motor is operated so as to move 10 from the second position to the first position (advance and retreat in the first linear direction described later). By storing the output from the motor required for moving the first axis 10 from the first position to the second position (or from the second position to the first position) in advance in the electronic control device. A predetermined power can be output from the motor based on the switch operation by the driver described above.

1-2. 1st axis 10
The first axis 10 is connected to the output shaft 6C of the drive source 5, and corresponds to the parking lock state in the first linear direction (for example, the direction X in FIG. 1 and the vertical direction of the paper surface in FIG. 1). It is configured so that it can move forward and backward between the position (see FIGS. 2 and 6 to 8) and the second position (see FIGS. 1 and 3 to 5) corresponding to the parking lock release state.

When a motor is used as the drive source 5, the rotation of the output shaft 6C of the motor is converted into a linear motion in the first linear direction on the first shaft 10 as shown in FIGS. 4 and 7. A linear motion conversion mechanism 11 is provided. As the linear motion conversion mechanism 11, as shown in FIGS. 4 and 7, a generally known ball screw mechanism or the like can be adopted as an example.

Further, in the first axis 10, a through hole 12 for guiding the first joint portion 15 for connecting the first axis 10 and the link portion 30, which will be described in detail later, is in a direction orthogonal to the first straight line direction (in the first axis 10). For example, in FIGS. 4 and 7, they are formed in the front and back directions of the paper surface). Here, as the first joint portion 15, as an example, a through pin inserted into the through hole 12 can be used. The through pin as the first joint portion 15 can move back and forth in the first straight line direction integrally with the first axis 10.

The through pin as the first joint portion 15 is preferably set longer than the outer diameter of the first axis 10 (so as to protrude from the first axis 10 in the direction orthogonal to the first straight line direction). .. As a result, the through pin can come into contact with the regulating portion 50, which will be described in detail later, when the first axis 10 is located at the first position. As a result, when the first axis 10 is located at the first position, even if a reverse input is input from the parking gear 60 via the second axis 20, the direction opposite to the direction toward the second position (for example,). , In FIG. 2, it is restricted to move downward on the paper. With this configuration, the transmission of the reverse input to the drive source 5 in which the motor is used as an example is cut off or reduced.

1-3. 2nd axis 20
The second axis 20 corresponds to a parking rod, and is linked to the advance / retreat of the first axis 10 in the first straight line direction, and the first axis 10 extends in a direction different from the first straight line direction. A third position corresponding to the first position (see FIGS. 2 and 6 to 8) and a fourth position corresponding to the second position of the first axis 10 (see FIGS. 1 and 3 to 5). The second direction is, for example, substantially orthogonal to the first straight line direction (it does not necessarily have to be 90.0 degrees with respect to the first straight line direction). The direction may be (for example, the direction Y in FIG. 1). The second direction does not necessarily have to be linear, and is arcuate in correspondence with the operation of one end of the lever portion 40 described later. There may be.

One end side of the second shaft 20 is connected to a lever 40, which will be described in detail later, via a connection pin 21. On the other end side of the second shaft 20, a cam portion 22 for guiding an operation relating to engagement or disengagement (parking lock state or parking lock release state) of the park pole 70 with respect to the parking gear 60 is formed. ..

Further, an elastic member 23 is arranged on the second shaft 20 so as to be adjacent to the cam portion 22. As the elastic member 23, a coil spring can be used as an example. A support portion 23A for supporting one end of the elastic member 23 is provided on the second shaft 20, and the elastic member 23 can be pressed so as to press the cam portion 22 against the guide portion 80. It has become. Therefore, when the second axis 20 gradually moves from the fourth position to the third position, the elastic member 23 is gradually compressed and presses the cam portion 22 against the guide portion 80. As a result, the cam portion 22 presses the park pole 70 so that the park pole 70 engages with the parking gear 60.

1-4. Link part 30
As shown in FIGS. 5, 8 and 9, for example, the link portion 30 is composed of a first link portion 31 and a second link portion 32 having the same shape. As shown in FIGS. 1 and 9, the first link portion 31 and the second link portion 32 do not necessarily have to be one end thereof (in the present disclosure, the "one end" is necessarily the "end portion" in the extending direction. (It shall include "near the end"), and is connected to the first shaft 10 via a through pin as the first joint portion 15 and a bearing 16 (first link portion 31 and second link portion 32). Is connected to the first shaft 10 via a through pin as the first joint portion 15 and a bearing 16 so as to be relatively rotatable with respect to the first shaft 10).

Further, the first link portion 31 and the second link portion 32 do not necessarily have to be the other end of each (the "end end" in the present disclosure is not necessarily the "end portion" in the extending direction, but "near the end portion". ), Each of which is coupled to a connecting pin as a second joint portion 35. As a result, the first link portion 31 and the second link portion 32 can operate integrally, and as described above, the posture as the link portion 30 can be changed between the first posture and the second posture. It is possible. A lever portion 40, which will be described in detail later, is connected to the connecting pin as the second joint portion 35.

The link portion 30 having such a configuration has a first posture (see FIGS. 2 and 6 to 8) corresponding to the first position of the first axis 10 as the first axis 10 advances and retreats in the first linear direction. ) And the second posture (see FIGS. 1 and 3 to 5) corresponding to the second position of the first axis 10. The posture can be changed (changed).

By the way, as shown in FIG. 6, the first posture of the link portion 30 (the first link portion 31 and the second link portion 32) is the first line T1 extending in the first straight line direction and the other end of the link portion 30. It is preferable that the angle α formed between the second line T2 extending from one end to the second line T2 is 90 degrees or less. With this configuration, when the first shaft 10 is located at the first position, even if a reverse input is input from the parking gear 60 to the link portion 30 via the second shaft 20, the first joint portion 15 The force of the vector in the direction opposite to the direction toward the second position (for example, in the direction below the paper surface in FIG. 2) is input from the link portion 30 to the through pin. However, when the first axis 10 is located at the first position, as described above, the through pin as the first joint portion 15 is in contact with the regulation portion 50 described later, so that the direction toward the second position is different. Movement in the opposite direction is restricted (at the same time, movement of the first axis 10 in the opposite direction is also restricted). Therefore, it is possible to efficiently cut off or reduce the transmission of the reverse input to the drive source 5.

1-5. Lever part 40
As shown in FIGS. 1 and 9, one end of the lever portion 40 is connected to the second shaft 20 via a connecting pin 21, and the other end thereof is via a connecting pin and a bearing 36 as a second joint portion 35. The lever portion 40 is connected to the link portion 30 via a connecting pin as a second joint portion 35 and a bearing 36 so as to be relatively rotatable with respect to the link portion 30. There). As a result, the lever portion 40 can rotate in conjunction with the transition of the above-mentioned posture of the link portion 30, and it is possible to guide the advance / retreat of the second axis 20 in the second direction based on the rotation. can.

The shape of the lever portion 40 is not particularly limited. For example, as shown in FIG. 1, the lever portion 40 may have a substantially linear shape, or may have a substantially “dogleg” shape that is bent in the middle. You may.

1-6. Regulatory Department 50
When the first axis 10 is located at the first position, the regulating portion 50 has a direction in which the first axis 10 (through pin as the first joint portion 15) is in the direction opposite to the direction toward the second position (for example,). In FIG. 2, it is provided to restrict movement (downward on the paper). The regulating unit 50 can be provided on the housing 7 accommodating the drive source 5, as shown in FIG. 2 as an example.

When the first axis 10 is located at the second position, the direction in which the first axis 10 (through pin as the first joint portion 15) is opposite to the direction toward the first position (for example, in FIG. 1). May extend from the housing 7 to provide another regulatory section in order to regulate the movement in the upward direction on the paper.

Further, instead of providing the regulation unit 50 or in addition to providing the regulation unit 50, the first axis 10 may move forward and backward only between the first position and the second position in the first straight line direction. As a result, the electronic control device (not shown) of the drive source 5 may store the moving distance between the first position and the second position in advance, and / or separately provide a position sensor. The configuration may be such that the position of the first axis 10 is managed.

The vehicle parking device 1 including at least each of the components described above can operate, for example, between the parking lock release state shown in FIG. 1 and the parking lock state shown in FIG. It has become.

2. 2. Modification Example Next, the configuration of the vehicle parking device 1 according to another embodiment will be described with reference to FIGS. 10 to 12. FIG. 10 is a schematic diagram schematically showing the configuration of the vehicle parking device 1 according to the second embodiment. FIG. 11 is a schematic diagram schematically showing the configuration of the vehicle parking device 1 according to a modification in the case where the electromagnetic actuator is used as the drive source 5. FIG. 12 is a schematic view schematically showing the configuration of a vehicle parking device according to a modification in the case where the feed screw mechanism is a linear motion conversion mechanism 11.

2-1. The second embodiment and other modified examples The vehicle parking device 1 according to the second embodiment has substantially the same configuration as the vehicle parking device 1 according to the above-described one embodiment, as shown in FIG. A hydraulic unit is used as the drive source 5. When the hydraulic unit is used as the drive source 5, the output shaft of the hydraulic unit can be integrated with the first shaft 10, so that it is not necessary to provide the linear motion conversion mechanism 11 in one embodiment.

The drive source 5 is not limited to the above-mentioned motor and hydraulic unit, and for example, an electromagnetic actuator as shown in FIG. 11 can be used without limitation. Further, the linear motion conversion mechanism 11 provided when a motor is used as the drive source 5 is not limited to the ball screw mechanism described above, and a male screw and a female screw 10p as the first shaft 10 as shown in FIG. 12 are used. It may be a configured feed screw mechanism.

As described above, various embodiments have been exemplified, but the above embodiments are merely examples and are not intended to limit the scope of the invention. The above embodiment can be implemented in various other embodiments, and various omissions, substitutions, and changes can be made without departing from the gist of the invention. In addition, each configuration, shape, size, length, width, thickness, height, number, and the like can be appropriately changed for implementation.

Further, according to the vehicle parking device 1 of various embodiments exemplified as described above, the reverse input derived from the parking gear 60 is performed in a simple structure (without using electric energy) while reducing power consumption. Transmission to the drive source 5 can be efficiently cut off or reduced. Further, according to the vehicle parking device 1 of various embodiments, a member that exhibits a resistance force such as a detent spring disclosed in Patent Document 3 on a power transmission path from a drive source 5 to a second shaft 20. Is not included, the power from the drive source 5 can be efficiently transmitted to the second shaft 20, and as a result, the park pole 70 is efficiently engaged or disengaged with the parking gear 60. Can be matched.

Further, according to the vehicle parking device 1 of various embodiments, the park pole 70 is assumed that the first axis 10 is located at the first position (the second axis is located at the third position). Even if the park pole 70 may not be able to engage with the parking gear 60 due to the positions of the teeth engaged with each other with the parking gear 60 (see FIG. 13), the second shaft 20 Since the elastic member 23 is in the pressed state because is located at the third position, the pressing force of the elastic member 23 is input to the second shaft 20 via the support portion 23A. As a result, the second axis 20 can be slightly retracted in the direction from the third position to the fourth position (for example, in FIG. 13, it moves to the left on the paper surface) based on the pressing force of the elastic member 23. As a result, the park pole 70 can be engaged with the parking gear 60.

1 Vehicle parking device 5 Drive source 7 Housing 10 1st axis 11 Conversion mechanism (linear motion conversion mechanism)
15 1st joint part, through pin 20 2nd axis 30 Link part 31 1st link part 32 2nd link part 35 2nd joint part, connecting pin 40 Lever part 50 Restriction part 60 Parking gear 70 Park pole X 1st straight line direction Y second direction

Claims (6)

With the drive source
A first shaft connected to the output shaft of the drive source and moving back and forth between the first position corresponding to the parking lock state and the second position corresponding to the parking lock release state in the first straight line direction.
A third position corresponding to the first position of the first axis in a second direction extending in a direction different from the first straight line direction in conjunction with the advance / retreat of the first axis in the first straight line direction. A second axis that advances and retreats between the first axis and the fourth position corresponding to the second position,
By connecting one end to the first axis via at least the first joint portion, the first posture corresponding to the first position of the first axis and the first posture as the first axis moves forward and backward. A link portion in which the posture changes between the second posture corresponding to the second position on one axis and the second posture.
One end is connected to the second axis, and the other end is connected to the link portion via the second joint portion, and the second axis advances and retreats by rotating in conjunction with the transition of the posture of the link portion. And the lever part that guides
A regulatory unit that regulates the movement of the first axis in the direction opposite to the direction toward the second position when the first axis is located at the first position.
A vehicle parking device. The vehicle parking device according to claim 1, wherein the regulation unit is provided on a housing accommodating the drive source. The first posture is a posture in which the angle formed between the first line extending in the first straight line direction and the second line extending from the other end of the link portion to one end is 90 degrees or less. The vehicle parking device according to claim 1 or 2. The first joint portion is a penetrating pin that penetrates the first axis in a direction orthogonal to the first straight line direction, and is positioned at the first position when the penetrating pin abuts on the restricting portion. The vehicle parking device according to any one of claims 1 to 3, wherein the movement of the first axis in the direction opposite to the direction toward the second position is restricted. The link portion is formed of a first link portion and a second link portion.
One end of the first link portion and one end of the second link portion are connected to the through pin via a bearing, and the other end of the first link portion and the other end of the second link portion are described. It is connected by a connecting pin as a second joint,
The vehicle parking device according to claim 4, wherein the lever portion is connected to the connecting pin. The drive source is a motor.
The vehicle parking device according to any one of claims 1 to 5, wherein a conversion mechanism for converting the rotation of the motor into a linear motion in the first linear direction is provided on the first axis.

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