WO2017135122A1

WO2017135122A1 - Shift device

Info

Publication number: WO2017135122A1
Application number: PCT/JP2017/002536
Authority: WO
Inventors: 秀一望月; 修次小縣
Original assignee: 株式会社東海理化電機製作所
Priority date: 2016-02-03
Filing date: 2017-01-25
Publication date: 2017-08-10
Also published as: JP6542688B2; JP2017136962A

Abstract

A shift device is provided with: a knob (14) that is rotated in order to select a shift range of a vehicle transmission; a lock member (96) that restricts the rotation of the knob; a cam member (95) that displaces the lock member between a restricted position and a non-restricted position; a drive source (91) for rotating the cam member; and a control unit (103) for controlling the drive source. The drive source includes a first gear (92) that transmits a drive force of the drive source to the cam member. The cam member includes a second gear (93) that engages with the first gear to receive the drive force of the drive source. The control unit is configured so as to: set a voltage applied to the drive source to the lowest voltage during the maximum time it takes from after the first gear starts to rotate until a first setting time, which is a transmission start time in which the first gear and the second gear engage and the transmission of the drive force is started; gradually increase the voltage applied to the drive source from the lowest voltage during a period from the first set time to a pre-set second setting time; gradually decrease the voltage applied to the drive source during a period from the third setting time to a fourth setting time; and set the voltage applied to the drive source to a constant value during a period from the fourth setting time to a stopping time at which the lock member is stopped. The third setting time is set after the second setting time, and the fourth setting time is set to before a prescribed time from the stopping time.

Description

Shift device

The present invention relates to a shift device that switches a shift range of a transmission by a rotation operation.

As the shift device, a by-wire type shift device that switches the shift range of the transmission by rotating a knob has been developed (see, for example, Patent Document 1).
The shift device described in Patent Document 1 includes a moderation mechanism that holds a knob at a rotational position corresponding to a selected shift range. The vehicle includes a control device that controls the shift range of the transmission according to the operation position of the knob of the shift device.

Japanese Patent Laying-Open No. 2015-107671

Incidentally, the above-described by-wire type shift device is provided with a shift lock mechanism for restricting the operation of the knob of the shift device. The shift lock mechanism operates after the driver operates the knob of the shift device. For this reason, there is a possibility that the driver may feel uncomfortable due to the operation sound generated by the operation of the shift lock mechanism.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a shift device that can suppress a sense of discomfort given to the driver when operating the shift lock mechanism.

One aspect of the present invention is a shift device, which is a knob that is rotated to select a shift range of a transmission of a vehicle, a lock member that restricts rotation of the knob, and the lock member that is a restriction position. A cam member that is displaced between an unregulated position, a drive source that rotates the cam member, and a control unit that controls the drive source, the drive source driving the drive source to the cam member; A first gear that transmits force; the cam member includes a second gear that meshes with the first gear and receives the driving force of the driving source; and the control unit starts the rotation of the first gear. Then, the voltage applied to the drive source during the maximum time taken until the first set time, which is the transmission start time when the first gear and the second gear mesh with each other and the transmission of the driving force is started. Is set to the lowest voltage and the first set time The voltage applied to the drive source is gradually increased from the lowest voltage between the preset second set time and the voltage applied to the drive source between the third set time and the fourth set time. The voltage applied to the drive source is set to a constant value between the fourth set time and the stop time for stopping the lock member, and the third set time is It is set after the second set time, and the fourth set time is set a predetermined time before the stop time.

According to the above configuration, by suppressing the drive of the drive source as much as possible when the first gear and the second gear are engaged with each other, it is possible to suppress the generation of sound associated with the engagement between the first gear and the second gear. it can. Further, when there is a change in the rotational speed of the drive source and there is a sudden movement of the lock member, the cam member and the lock member may be separated from each other and a collision sound may be generated. Therefore, when the displacement of the lock member is small, the occurrence of collision noise can be suppressed by increasing the voltage applied to the drive source and increasing the rotation speed. In addition, since the voltage applied to the drive source is reduced before the drive source is stopped, it is possible to suppress the generation of contact sound between the members by rapidly stopping the drive source. Therefore, the uncomfortable feeling given to the driver when operating the shift lock mechanism can be suppressed.

According to the present invention, it is possible to suppress the uncomfortable feeling given to the driver when the knob is returned to the predetermined operation position. Other aspects and advantages of the present invention will become apparent from the following description taken in conjunction with the drawings, which illustrate examples of the technical spirit of the present invention.

The perspective view which shows the interior of the vehicle in which the shift apparatus was installed in one Embodiment of a shift apparatus. The disassembled perspective view which shows the structure of the shift apparatus of the embodiment. The perspective top view which shows the structure of the shift apparatus of the embodiment. The perspective bottom view which shows the structure of the shift apparatus of the embodiment. The front view which shows the positional relationship of the dial knob and rotor cam of the shift apparatus of the embodiment. The bottom view which shows the positional relationship of the dial knob, rotor cam, and moderation pin of the shift apparatus of the embodiment. The top view which shows the positional relationship of the lock member and cam member of the shift apparatus of the embodiment. The partial top view which shows the positional relationship of the lock member and cam member of the shift apparatus of the embodiment. The partial top view which shows the positional relationship of the lock member and cam member of the shift apparatus of the embodiment. The partial top view which shows the positional relationship of the lock member and cam member of the shift apparatus of the embodiment. The partial top view which shows the positional relationship of the lock member and cam member of the shift apparatus of the embodiment. The partial top view which shows the positional relationship of the lock member and cam member of the shift apparatus of the embodiment. The block diagram which shows the electric constitution of the shift apparatus of the embodiment. The figure which shows control of the drive source by the shift apparatus of the embodiment. The figure which shows the modification of control of the drive source by a shift apparatus.

Hereinafter, an embodiment of the shift device will be described with reference to FIGS.
<Mechanical configuration>
As shown in FIG. 1, the shift device 11 is provided in a center console 12 of the vehicle. The shift device 11 includes a case 13 and a cylindrical dial knob 14 that is provided so as to be rotatable with respect to the case 13. The case 13 is provided inside the center console 12. The dial knob 14 is exposed outside the center console 12. When the dial knob 14 is rotated, a shift range of a transmission (not shown) is switched.

As shown in FIG. 2, the case 13 has a case main body 13a having a box shape and a cover 13b covering the upper portion of the case main body 13a. The cover 13b is provided with a hole 15 through which the dial knob 14 passes. The dial knob 14 has a cylindrical knob body 50a and a cylindrical knob cover 50b attached to the upper peripheral surface of the knob body 50a.

An annular groove 21 is formed in the upper part of the case body 13a. In the annular groove 21, a rotor cam 40 that is an annular cam member and a part of the knob body 50 a are rotatably accommodated on the rotor cam 40. By forming the annular groove 21, the inner peripheral wall 22 and the outer peripheral wall 23 are formed. A notch 24 is provided over the rotation range (about 120 °) of the dial knob 14 on the front side (the back side of the drawing) of the shift device above the outer peripheral wall 23. A portion of the cutout 24 of the outer peripheral wall 23 is a guide portion 23a, and the guide portion 23a functions as a guide for guiding the knob body 50a. In addition, a through hole 25 is provided in a lower portion of the notch 24 in the outer peripheral wall 23 over the rotation range (about 120 °) of the dial knob 14. Further, an arcuate arc-shaped groove 26 is formed along the annular groove 21 outside the guide portion 23a. A magnet for position detection (not shown) is installed in the arc-shaped groove 26. A guide hole 27 for attachment is provided on the left side of the notch 24 in the outer peripheral wall 23.

The rotor cam 40 is slidably rotatable with respect to the case body 13a in the annular groove 21. The rotor cam 40 is a gear having continuous teeth formed on the outer periphery. A part of the outer periphery of the rotor cam 40 is provided with a box-like engaging portion 41 that engages with the knob body 50a. A cam position sensor 102 for detecting the rotational position of the rotor cam 40 is provided in the engaging portion 41. The cam position sensor 102 corresponds to a detection unit. The rotor cam 40 is positioned in the annular groove 21 by being installed in the annular groove 21 so as to pass through the mounting guide hole 27. Two guide portions 43 are provided on the upper portion of the rotor cam 40. The guide part 43 is provided along the inner wall of the knob body 50a. The guide portion 43 regulates the rotation range of the rotor cam 40 by guiding the rotation of the rotor cam 40 and abutting against a protrusion provided inside the knob body 50a.

An annular large-diameter portion 51 is provided at the lower portion of the knob body 50a in the axial direction. The large diameter part 51 is provided with a notch 53. The notch 53 is formed over a range including the arc-shaped groove 26 and the guide hole 27 of the case main body 13a. A grip portion 54 that grips the guide portion 23 a is provided outside the large diameter portion 51. The grip part 54 guides the rotation of the knob body 50a by gripping the guide part 23a in a slidable manner. A lock hole 55 is provided on the knob body 50a on the opposite side of the grip portion 54. In the locking hole 55, the rotation of the knob body 50a is restricted when the lock member 96 is inserted. A shift position sensor for detecting the operation position of the dial knob 14 is provided on the lower surface of the knob body 50a.

An annular small-diameter portion 52 that is continuous with the large-diameter portion 51 is provided at the upper portion in the axial direction of the knob body 50a. A disc-shaped moderation portion 56 that provides moderation to the dial knob 14 is provided on the lower inner wall of the small diameter portion 52. A moderation surface 60 is formed on the lower surface of the moderation portion 56 (see FIG. 4).

The knob cover 50b is fixed to the knob body 50a so as to cover the outer peripheral surface of the small diameter portion 52 of the knob body 50a. The lower part of the knob cover 50b is inserted into the hole 15 of the cover 13b, and the knob cover 50b is held by the knob body 50a in an exposed state.

The two moderation pins 30 are provided on the upper portion of the case body 13a via springs 31. The moderation pin 30 is brought into contact with the moderation surface 60 of the knob body 50a by the biasing force of the spring 31 (see FIG. 4). The moderation unit 56, the moderation pin 30, and the like function as a moderation mechanism.

The holder 71 is fixed to the upper part of the case body 13a. The holder 71 is inserted into the knob body 50a. A disc-shaped cover panel 72 is attached to the upper portion of the holder 71. The cover panel 72 closes the opening of the knob body 50a or the knob cover 50b from the inside. Further, the cover panel 72 is rotatable relative to the knob body 50a and the knob cover 50b. The cover panel 72 is provided with a plurality of through holes 73. The plurality of through holes 73 are provided in the same number (four in this case) as the shift range of the transmission. The plurality of through-holes 73 are arranged in a line along the outer periphery of the cover panel 72 at a portion off the center of the cover panel 72. In addition, a plurality of marks 74 indicating the type of shift range are provided on the upper surface (front surface) of the cover panel 72. For example, the plurality of marks 74 include “P” indicating a parking range, “R” indicating a reverse range, “N” indicating a neutral range, and “D” indicating a drive range. The plurality of marks 74 correspond to the plurality of through holes 73, respectively, and are arranged in a line along the outer periphery of the plurality of through holes 73. Each mark 74 is formed of a translucent material.

Further, inside the holder 71, a light guide 75 for mark illumination and a plurality of light guides 76 for range notification are respectively held. The light guide 75 has a rectangular parallelepiped shape. The width of the light guide 75 is set to be approximately the same as the formation range of the marks 74 on the cover panel 72. The light guide 75 is located immediately below the formation range of the plurality of marks 74 on the cover panel 72. The light guide 75 irradiates light from a light source (not shown) provided immediately below the light guide 75 from the back of each mark 74. That is, each mark 74 is illuminated from the back. Each light guide 76 has a rectangular thin plate shape. The tip of each light guide 76 is fitted into the corresponding through hole 73 from below the cover panel 72 and exposed to the outside. Each light guide 76 emits the light to the outside while guiding light from each light source (not shown) provided immediately below them to the upper part of the holder 71. Only the light source of the light guide 76 corresponding to the shift range selected at that time is turned on.

As shown in FIGS. 3 and 4, the case 13 is provided with a drive mechanism 80 that rotates the dial knob 14. For example, the drive mechanism 80 operates when the dial knob 14 is rotated to reach the drive position and the vehicle drive source is stopped. The drive mechanism 80 includes a first motor 81, which is a drive source, a worm 82, a worm wheel 83, a connecting shaft 84, and a gear 85. The first motor 81 is provided inside the case body 13a. The drive shaft 81a of the first motor 81 extends in the front-rear direction of the shift device. A worm 82 is coaxially attached to the drive shaft 81a. The worm 82 meshes with a worm wheel 83 that is orthogonal to the drive shaft 81a and extends in the vertical direction of the shift device. The worm 82 and the worm wheel 83 constitute a worm gear. A connecting shaft 84 is fixed to the worm wheel 83. A gear housing portion 28 that houses a gear 85 that rotates the rotor cam 40 is provided on the upper portion of the case body 13a. The connecting shaft 84 penetrates from the inside of the case main body 13a to the gear accommodating portion 28 of the case main body 13a. A gear 85 is fixed to the end of the connecting shaft 84 that is not connected to the worm wheel 83. The gear 85 meshes with the rotor cam 40. Therefore, the rotation of the first motor 81 is transmitted to the rotor cam 40 via the worm 82, the worm wheel 83, the connecting shaft 84, and the gear 85. 3 and 4 show a state where the dial knob 14 has rotated to reach the parking position.

As shown in FIGS. 3 and 4, the case 13 is provided with a shift lock mechanism 90 that restricts the rotation operation of the dial knob 14. The shift lock mechanism 90 operates when the drive source of the vehicle is stopped in a state where the dial knob 14 is located at the parking position that is the operation position corresponding to the parking range “P”. The shift lock mechanism 90 includes a second motor 91, a worm 92, a worm wheel 93, a connecting shaft 94, a cam member 95, and a lock member 96. The second motor 91 is provided inside the case body 13a. The drive shaft 91a of the second motor 91 extends in the front-rear direction of the shift device. A worm 92 is coaxially attached to the drive shaft 91a. The worm 92 is engaged with a worm wheel 93 that is orthogonal to the drive shaft 91a and extends in the vertical direction of the shift device. The worm 92 and the worm wheel 93 constitute a worm gear. A connecting shaft 94 is fixed to the worm wheel 93. A lock accommodating portion 29 that accommodates a lock member 96 and a cam member 95 that transmits a driving force to the lock member 96 is provided on the upper portion of the case main body 13a. The connecting shaft 94 penetrates from the inside of the case body 13a to the lock housing portion 29 of the case body 13a. A cam member 95 is fixed to the end of the connecting shaft 94 that is not connected to the worm wheel 93. Therefore, the rotation of the second motor 91 is transmitted to the cam member 95 via the worm 92, the worm wheel 93, and the connecting shaft 94. The worm 92 corresponds to a first gear provided in the second motor 91 as a drive source, and the worm wheel 93 corresponds to a second gear provided in the cam member 95.

The cam member 95 abuts on the lock member 96, and the lock member 96 is linearly moved by the rotation of the cam member 95. The lock member 96 includes a rectangular parallelepiped lock portion 96 a that enters the lock hole 55 of the knob body 50 a and a plate-like contact portion 96 b that contacts the cam member 95. The lock portion 96 a is provided with a magnet 98 for detecting the position of the lock member 96. The position of the lock member 96 is detected from a change in magnetic flux of the magnet 98 by a lock position sensor (not shown) provided in the lock housing portion 29. The magnet 98 and the lock position sensor function as a detection unit. The lock member 96 is always urged toward the knob body 50 a by a spring 97 provided between the lock member 96 and the lock housing portion 29. That is, the lock member 96 moves to the unlock position when the long diameter portion of the cam member 95 abuts, and moves to the lock position by being biased by the spring 97 when the small diameter portion of the cam member 95 abuts. 3 and 4 show a state in which the shift lock mechanism 90 restricts the rotation of the dial knob 14.

As shown in FIG. 5, in the rotor cam 40, when the dial knob 14 is located at the parking position and the power supply of the vehicle is stopped, the engaging portion 41 of the rotor cam 40 is near the left end side of the notch 53 of the knob body 50a. Is located. As a result, the dial knob 14 cannot be rotated from the parking position to the drive position or the like, in other words, clockwise.

As shown in FIG. 6, a mountain portion 62 and a valley portion 61 are continuous with the moderation surface 60 of the moderation portion 56 of the knob body 50a. The moderation surface 60 is provided with a crest 62 and a trough 61 with respect to the two moderation pins 30. The moderation surface 60 is provided with four valley portions 61 (61p, 61r, 61n, 61d) along the rotation locus of the moderation portion 56 with respect to one moderation pin 30. Mountain portions 62 (62a, 62b, 62c, 62d, 62e) are provided between and at both ends of these

valley portions

61p, 61r, 61n, 61d. The valley portion 61 and the mountain portion 62 are smoothly continuous along the rotation locus of the moderation portion 56. Each

trough

61p, 61r, 61n, 61d corresponds to the operation position of the dial knob 14 that is operated when switching each shift range “P”, “R”, “N”, “D” of the transmission.

The moderation pin 30 is constantly urged in the direction in which it is pressed against the moderation surface 60 by the elastic force of the spring 31. The tip of the moderation pin 30 slides in a state of elastic contact with the moderation surface 60 as the knob body 50a rotates, and is sequentially engaged with the

valley portions

61p, 61r, 61n, and 61d. Thereby, an operation feeling such as moderate moderation feeling can be obtained via the dial knob 14.

When the moderation pin 30 is engaged with each of the

valley portions

61p, 61r, 61n, 61d, the operation position of the knob body 50a corresponds to each shift range “P”, “R”, “N”, “D”. To do. The shift range of the transmission is switched by rotating the knob body 50a to the operation positions corresponding to the shift ranges “P”, “R”, “N”, and “D” through the operation of the dial knob 14.

The rotor cam 40 does not restrict the rotation of the knob body 50a during normal operation. Further, only when the dial knob 14 is rotated to the parking position, the engaging portion 41 is engaged with the left end of the notch 53 of the knob body 50a by the driving force of the first motor 81, and the rotor cam 40 is rotated together with the dial knob 14. The

Next, the displacement of the lock member 96 of the shift lock mechanism 90 will be described with reference to FIGS. The position of the lock member 96 is changed depending on the rotational position of the cam member 95. The cam member 95 rotates as the drive shaft 91a of the second motor 91 rotates.

7, when the rotation of the dial knob 14 is restricted by the shift lock mechanism 90, the small diameter portion 95a of the cam member 95 is in contact with the contact portion 96b of the lock member 96. At this time, since the small-diameter portion 95a of the cam member 95 is located between the connecting shaft 94 and the contact portion 96b of the lock member 96, the lock member 96 protrudes from the knob body 50a of the dial knob 14 and the knob body 50a. Is inserted into the locking hole 55. That is, the lock member 96 is positioned at the restriction position, and the rotation of the dial knob 14 is restricted. The large-diameter portion 95b of the cam member 95 is provided with a flat planar portion 95c. The position of the cam member 95 when the surface of the flat portion 95c of the cam member 95 is parallel to the surface of the abutting portion 96b of the lock member 96 is defined as “angle = 0 °” as a reference position.

As shown in FIG. 8, when the cam member 95 rotates “angle = 45 °” counterclockwise from the reference position, the small diameter portion 95 a of the cam member 95 contacts the contact portion 96 b of the lock member 96. In “angle = 0 °” to “angle = 45 °”, since the diameter of the cam member 95 is the same, the position of the lock member 96 does not change. For this reason, the lock member 96 is located at the restricting position inserted into the knob body 50a. At this time, the lock member 96 is inserted into the lock hole 55 of the knob body 50a.

As shown in FIG. 9, when the cam member 95 is rotated “angle = 90 °” counterclockwise from the reference position, the portion of the cam member 95 that is longer than the small-diameter portion 95a is abutted against the lock member 96. It contacts the contact portion 96b. For this reason, the lock member 96 moves slightly from the restriction position in the direction away from the knob body 50a. At this time, the lock member 96 is inserted into the lock hole 55 of the knob body 50a. The cam member 95 has such a shape that the movement of the lock member 96 is suppressed in the range of “angle = 0 °” to “angle = 90 °”.

As shown in FIG. 10, when the cam member 95 is rotated “angle = 180 °” counterclockwise from the reference position, the portion of the cam member 95 that is further away from the shaft than the small diameter portion 95 a is It contacts the contact part 96b. For this reason, the lock member 96 moves further than the restriction position in the direction away from the knob body 50a. At this time, the lock member 96 has come out of the lock hole 55 of the knob body 50a. Therefore, the dial knob 14 can be rotated.

As shown in FIG. 11, when the cam member 95 rotates “angle = 225 °” counterclockwise from the reference position, the large-diameter portion 95 b of the cam member 95 contacts the contact portion 96 b of the lock member 96. For this reason, the lock member 96 moves to a non-restricted position separated from the knob body 50a. At this time, the lock member 96 has come out of the lock hole 55 of the knob body 50a. Therefore, the dial knob 14 can be rotated.

As shown in FIG. 12, when the cam member 95 rotates “angle = 270 °” counterclockwise from the reference position, the large-diameter portion 95b of the cam member 95 comes into contact with the contact portion 96b of the lock member 96. In “angle = 225 °” to “angle = 270 °”, the cam member 95 has the same diameter, so the position of the lock member 96 does not change. For this reason, the lock member 96 is located at a non-restricted position separated from the knob body 50a. At this time, the lock member 96 has come out of the lock hole 55 of the knob body 50a. Therefore, the dial knob 14 can be rotated. The cam member 95 is formed so that the movement of the lock member 96 is suppressed and the movement of the lock member 96 is not performed in the range of “angle = 225 °” to “angle = 270 °”.

<Electrical configuration>
Next, the electrical configuration of the shift device 11 will be described with reference to FIG.
As shown in FIG. 13, the shift device 11 includes a shift position sensor 101, a cam position sensor 102, a lock position sensor 108, and a control unit 103. A shift position sensor 101 and a cam position sensor 102 are connected to the control unit 103. In addition, a first motor 81, a second motor 91, and a light source 104 are connected to the control unit 103, respectively. Furthermore, an engine switch 105, a foot brake switch 106, and a transmission 107 provided on the vehicle are also connected to the control unit 103.

The shift position sensor 101 generates an electrical signal corresponding to the operation position of the knob body 50a. The cam position sensor 102 generates an electrical signal corresponding to the rotational position of the rotor cam 40. The lock position sensor 108 generates an electrical signal corresponding to the position of the lock member 96. The light source 104 individually supplies light to the light guide 75 and the plurality of light guides 76. The light source 104 may include a plurality of light emitting diodes corresponding to the light guides 75 and 76, respectively. The engine switch 105 detects an operation when stopping or starting an engine (not shown) that is a driving source for driving the vehicle. The foot brake switch 106 detects that a brake pedal (not shown) is depressed.

The control unit 103 detects the operation position of the dial knob 14 based on the electric signal generated by the shift position sensor 101, more precisely the operation positions “P”, “R”, “N”, and “D” of the knob body 50a. . Then, the control unit 103 generates a command signal for switching the shift range of the transmission 107 according to the operation position of the knob body 50a. The control unit 103 controls the driving of the first motor 81 and the second motor 91 according to the operation position of the knob body 50a and the on / off state of the engine switch 105 and the foot brake switch 106.

Note that the control unit 103 sets the shift range of the transmission 107 regardless of the operation position of the dial knob 14 when a specific event that is set in advance as the shift range of the transmission 107 should be switched to the parking range is detected. A command signal for automatically switching to the parking range is generated. As specific events, for example, the engine is stopped as a driving source for driving the vehicle, the mechanical key is pulled out from the key cylinder, or the door is opened. These specific events are detected by various sensors including the engine switch 105.

Further, when a specific event is detected through various sensors, the control unit 103 performs control according to the state of the dial knob 14 at that time. That is, an electrical signal generated by a sensor that detects a specific event functions as a trigger signal that triggers execution of control according to the state of the dial knob 14. The trigger signal is, for example, an electrical signal indicating that the engine switch 105 has been turned off, an electrical signal indicating that the mechanical key has been pulled out of the key cylinder, or an electrical signal indicating that the door has been opened.

For example, the control unit 103 detects that a specific event is detected, and maintains the dial knob 14 at the operation position corresponding to the shift ranges “R”, “N”, and “D” other than the parking range “P”. When a specific condition including that is established is established, an automatic return operation of the dial knob 14 is executed. That is, the dial knob 14 is automatically switched to the parking position that is the operation position corresponding to the parking range “P”.

Then, when the dial knob 14 is switched to the parking position and the foot brake is not operated and the foot brake switch 106 is turned off, the control unit 103 controls the shift lock mechanism 90 to restrict the rotation of the dial knob 14. Further, when the foot brake is operated and the foot brake switch 106 is turned on, the control unit 103 controls the shift lock mechanism 90 to release the restriction on the rotation of the dial knob 14.

<Shift lock operation>
Next, shift lock operation execution processing by the control unit 103 will be described with reference to FIGS.

First, the case where the control unit 103 controls the shift lock mechanism 90 to restrict the rotation of the dial knob 14 will be described. The lock member 96 is displaced from the non-restricted position (state shown in FIG. 12) to the restricted position (state shown in FIG. 7).

Specifically, as shown in FIG. 14, the controller 103 rotates the worm 92 together with the drive shaft 91 a by driving the second motor 91. At this time, the control unit 103 causes the second motor 91 to continue until the first set time t1, which is the maximum time taken until the transmission start when the worm 92 and the worm wheel 93 are engaged with each other and the transmission of the driving force is started. Is set to the first voltage V1, which is the lowest voltage. The first voltage V <b> 1 is the lowest voltage that can drive the second motor 91. The cam member 95 is a period in which the worm 92 and the worm wheel 93 are engaged with each other and transmission of the driving force is started. From the position at the previous stop between “angle = 270 °” and “angle = 225 °”. Almost no change. In FIG. 14, “0” is described as “angle = 270 °” for convenience. Thus, by suppressing the rotation of the second motor 91 as much as possible at the time of meshing, it is possible to suppress the generation of sound accompanying the meshing of the worm 92 and the worm wheel 93.

Subsequently, the control unit 103 sets the voltage applied to the second motor 91 to the first voltage V1 during the period from the first set time t1 when the second motor 91 is transmitted to the preset second set time t2. And gradually increase to the third voltage V3. The third voltage V3 is higher than the first voltage V1 (V3> V1). The second set time t2 is, for example, the time until the cam member 95 reaches “angle = 180 °”, which is a position before the start of regulation. Until the cam member 95 reaches “angle = 180 °”, the lock member 96 moves slightly, so that the control unit 103 increases the voltage applied to the second motor 91 during this time. By the way, when the lock member is moved by the rotation of the cam member 95, there is a change in the rotation speed, and if the lock member 96 is suddenly moved, the cam member 95 and the lock member 96 are separated from each other to cause a collision sound. May occur. Therefore, when the displacement of the lock member 96 is small, the voltage applied to the second motor 91 is increased to increase the rotation speed, thereby suppressing the occurrence of collision noise. Further, by gradually increasing the voltage applied to the second motor 91, it is possible to absorb variations in load that differ depending on the device.

Subsequently, the control unit 103 maintains the voltage applied to the second motor 91 at the third voltage V3 from the second set time t2 to the third set time t3 set after the second set time t2. . The third set time t3 is, for example, a time when the cam member 95 reaches the restriction position “angle = 90 °”. Thus, the lock member 96 can be moved as soon as possible by setting the voltage applied to the second motor 91 high. In addition, by setting the voltage applied to the second motor 91 to be constant, it is possible to suppress the occurrence of collision noise between the cam member 95 and the lock member 96.

Subsequently, the control unit 103 gradually decreases the voltage applied to the second motor 91 from the third set time t3 to the fourth set time t4. The fourth set time t4 is set a predetermined time before the stop time t5 at which the lock member 96 is stopped. The predetermined time is a time set based on the time taken until the rotation of the second motor 91 is stopped. The fourth set time t4 is, for example, a time when the cam member 95 reaches the restriction position “angle = 45 °”. As described above, since the voltage applied to the second motor 91 is decreased before the second motor 91 is stopped, the contact noise generated between the respective members by suddenly stopping the second motor 91 is generated. Can be suppressed.

Subsequently, during the period from the fourth set time t4 to the stop time t5, the control unit 103 sets the voltage applied to the second motor 91 to a constant value with the second voltage V2. The second voltage V2 is higher than the first voltage V1 and lower than the third voltage V3 (V1 <V2 <V3). When the control unit 103 determines that the lock member 96 has reached the restriction position based on a signal from the lock position sensor 108, the control unit 103 stops the second motor 91. That is, when the cam member 95 is “angle = 45 °” to “angle = 0 °”, the control unit 103 stops driving the second motor 91. In FIG. 14, “angle = 0 °” is described at the fifth set time t5 for convenience. Therefore, since the cam member 95 has such a shape that the movement of the lock member 96 is reduced as much as possible between the fourth set time t4 and the stop time t5, even if the driving of the second motor 91 is stopped, it is between the members. Generation | occurrence | production of the contact sound to generate | occur | produce can be suppressed. In addition, the locking member 96 can be reliably stopped not by time but by the actual position. Note that the second motor 91 may be stopped when the control unit 103 determines that the lock member 96 has reached the restriction position by a signal from the lock position sensor 108 before the fourth set time t4.

Next, a case where the control unit 103 controls the shift lock mechanism 90 to release the restriction on the rotation of the dial knob 14 will be described. The lock member 96 is displaced from the restricted position (state shown in FIG. 7) to the non-restricted position (state shown in FIG. 12).

Specifically, as shown in FIG. 14, the controller 103 rotates the worm 92 together with the drive shaft 91 a by driving the second motor 91. At this time, the control unit 103 controls the second motor 91 during the maximum time until the first set time t1 when the worm 92 and the worm wheel 93 are engaged with each other and the transmission of the driving force is started. The applied voltage is set to the first voltage V1, which is the lowest voltage. Since cam member 95 is engaged until worm 92 and worm wheel 93 are engaged with each other and transmission of driving force is started, the cam member 95 is moved from the position at the previous stop between “angle = 0 °” and “angle = 45 °”. Almost no change. In FIG. 14, “angle = 0 °” is described as 0 for convenience. Thus, by suppressing the rotation of the second motor 91 as much as possible at the time of meshing, it is possible to suppress the generation of sound accompanying the meshing of the worm 92 and the worm wheel 93.

Subsequently, the control unit 103 sets the voltage applied to the second motor 91 to the first voltage V1 during the period from the first set time t1 when the second motor 91 is transmitted to the preset second set time t2. And gradually increase to the third voltage V3. The second set time t2 is, for example, a time when the cam member 95 reaches “angle = 90 °”. While the cam member 95 moves from “angle = 45 °” to “angle = 90 °”, the lock member 96 moves a little, so that the control unit 103 increases the voltage applied to the second motor 91 during this time. Thus, when the displacement of the lock member 96 is small, the voltage applied to the second motor 91 is increased to increase the rotational speed, thereby suppressing the occurrence of collision noise.

Subsequently, the control unit 103 maintains the voltage applied to the second motor 91 at the third voltage V3 from the second set time t2 to the third set time t3 set after the second set time t2. . For example, the third set time t3 is a time when the cam member 95 reaches “angle = 180 °”. Thus, the lock member 96 can be moved as soon as possible by setting the voltage applied to the second motor 91 high. In addition, by setting the voltage applied to the second motor 91 to be constant, it is possible to suppress the occurrence of collision noise between the cam member 95 and the lock member 96.

Subsequently, the control unit 103 gradually decreases the voltage applied to the second motor 91 from the third set time t3 to the fourth set time t4. For example, the fourth set time t4 is a time when the cam member 95 reaches “angle = 225 °”. As described above, since the voltage applied to the second motor 91 is decreased before the second motor 91 is stopped, the contact noise generated between the respective members by suddenly stopping the second motor 91 is generated. Can be suppressed.

Subsequently, during the period from the fourth set time t4 to the stop time t5, the control unit 103 sets the voltage applied to the second motor 91 to a constant value with the second voltage V2. When the control unit 103 determines that the lock member 96 has reached the non-restricted position based on a signal from the lock position sensor 108, the control unit 103 stops the second motor 91. That is, when the cam member 95 is “angle = 225 °” to “angle = 270 °”, the control unit 103 stops driving the second motor 91. In FIG. 14, “angle = 270 °” is described at the fifth set time t5 for convenience. Therefore, since the cam member 95 has such a shape that the movement of the lock member 96 is reduced as much as possible between the fourth set time t4 and the stop time t5, even if the driving of the second motor 91 is stopped, it is between the members. Generation | occurrence | production of the contact sound to generate | occur | produce can be suppressed. In addition, the locking member 96 can be reliably stopped not by time but by the actual position. If the control unit 103 determines that the lock member 96 has reached the non-restricted position by a signal from the lock position sensor 108 before the fourth set time t4, the second motor 91 may be stopped.

As described above, according to this embodiment, the following effects can be obtained.
(1) By suppressing the driving of the second motor 91 as much as possible when the worm 92 and the worm wheel 93 are engaged with each other, it is possible to suppress the generation of sound due to the engagement between the worm 92 and the worm wheel 93. Further, when the rotation speed of the second motor 91 is changed and the lock member is moved suddenly, the cam member 95 and the lock member 96 may be separated from each other and a collision noise may be generated. Therefore, when the displacement of the lock member 96 is small, the voltage applied to the second motor 91 is increased to increase the rotation speed, thereby suppressing the occurrence of collision noise. Therefore, the uncomfortable feeling given to the driver when operating the shift lock mechanism 90 can be suppressed.

(2) Since the voltage applied to the second motor 91 is decreased before the second motor 91 is stopped, the contact noise generated between the members is generated by suddenly stopping the second motor 91. Can be suppressed.

(3) Since the cam member 95 has a shape in which the movement of the lock member 96 is reduced as much as possible between the fourth set time t4 and the stop time t5, even when the drive of the second motor 91 is stopped, Generation | occurrence | production of the contact sound to generate | occur | produce can be suppressed.

(4) Since the control unit 103 stops the application to the second motor 91 depending on the position of the lock member 96, the lock member 96 can be reliably stopped not by the time but by the actual position. it can.

(5) Since the lock member 96 is biased by the spring 97, the contact state between the lock member 96 and the cam member 95 can be improved.
In addition, the said embodiment can also be implemented with the following forms which changed this suitably.

In the above embodiment, for example, when the operation of the second motor 91 is reduced in a low temperature environment, the second motor 91 is further driven when the movement of the lock member 96 is not completed even after the stop time t5 has elapsed. You may add the control to make. For example, as shown in FIG. 15, the stop time t5 is set as the fifth set time t5. When the control unit 103 determines that the movement of the lock member 96 is not completed based on the detection result of the lock position sensor 108 by the fifth set time t5, the control unit 103 sets the preset value after the fifth set time t5. 6 The voltage applied to the second motor 91 is maintained at the second voltage V2 until the set time t6. Then, the control unit 103 gradually increases the voltage applied to the second motor 91 from the sixth set time t6 to the seventh set time t7 set after the sixth set time t6 to increase the third voltage V3. Increase to. The control unit 103 maintains the third voltage V3 after the seventh set time t7, and stops the driving of the second motor 91 when the movement of the lock member 96 is completed or when a predetermined time has elapsed.

According to such a configuration, for example, when the operation of the second motor 91 decreases in a low temperature environment or the like, the rotation of the rotor cam 40 is not completed even after the stop time (fifth set time) t5, and the lock member 96 Move may not be completed. Therefore, in preparation for such a case, when the movement of the lock member 96 is not completed even after the fifth set time t5, the voltage applied to the second motor 91 again from the sixth set time t6 to the seventh set time t7. Increase gradually. Thereby, even if the operation of the second motor 91 is reduced, the amount of the operation of the second motor 91 can be compensated by applying a voltage to the second motor 91.

Further, the fourth voltage V4 (V4> V3) larger than the third voltage V3 may be set as the voltage at the seventh set time t7. In this way, it is possible to increase the possibility that the second motor 91 can be operated when the third voltage V3 is insufficient to operate the second motor 91.

In the above embodiment, the specific event that is the specific condition is not limited to the above, and is other events such as a combination of the release of the driver's seat belt and the opening of the driver's seat door. Also good.

In the above embodiment, the engaging portion 41 of the rotor cam 40 is engaged with the notch 53 of the knob body 50a, so that the rotor cam 40 rotates together with the knob body 50a. However, the engagement between the rotor cam 40 and the knob body 50a is not limited to the engaging portion 41 and the notch 53, and the rotor cam 40 and the knob body 50a may be engaged with each other according to other configurations.

In the embodiment described above, the driving force of the first motor 81 is rotated by the knob body 50a via the rotor cam 40. However, the configuration of the rotor cam 40 is omitted and the driving force of the first motor 81 is transmitted via a gear or the like. May be transmitted directly to the knob body 50a.

In the above embodiment, the parking range “P” is a predetermined shift range that automatically returns, but may be a predetermined shift range that automatically returns another shift range. For example, when it is necessary to set the neutral range “N” when the car is washed, the driver automatically returns to the neutral range “N” by performing a predetermined operation corresponding to the car wash.

In the above embodiment, the cylindrical dial knob 14 is adopted, but the shape of the dial knob 14 (the outer shape of the knob cover 50b) may be changed as appropriate. For example, a knob cover 50b having a polygonal column shape such as a quadrangular column or a pentagonal column, or an elliptical column shape may be employed.

In the above embodiment, two combinations of the moderation pin 30 and the moderation unit 56 are provided, but only one combination of the moderation pin 30 and the moderation unit 56 may be provided, or the moderation pin 30 and the moderation unit 56 may be provided. Three or more combinations may be provided.

In the above embodiment, four operation positions “P”, “R”, “N”, and “D” are set for the dial knob 14. However, the operation position can be appropriately changed according to the shift range set in the transmission 107. In addition, the number of each trough part 61 and the peak part 62, the arrangement | positioning space | interval, etc. can be changed similarly.

In the above configuration, the moderation mechanism configured by the moderation unit 56, the moderation pin 30, and the like may be omitted as long as the driver can grasp the operation position.
In the above embodiment, the lock member 96 is moved from the restricted position to the non-restricted position by the cam member 95, and the lock member 96 is moved from the non-restricted position to the restricted position by the spring 97. However, both of the movements of the lock member 96 may be performed by the cam member 95.

In the above embodiment, the driving of the second motor 91 is stopped based on the position of the lock member 96 acquired from the lock position sensor 108 by the control unit 103. However, if the time can be set so that the stop of the second motor 91 is in time, the control unit 103 may stop the driving of the second motor 91 based on the time from the start of the rotation of the second motor 91.

In the above embodiment, the cam member 95 is formed to suppress the movement of the lock member 96 between the fourth set time t4 and the stop time t5. However, if the generation of contact sound can be suppressed by controlling the driving of the second motor 91, the cam member 95 suppresses the movement of the lock member 96 between the fourth set time t4 and the stop time t5. It does not need to be formed.

In the above embodiment, the voltage applied to the second motor 91 is gradually decreased from the third set time t3 to the fourth set time t4, and the second is set from the fourth set time t4 to the stop time t5. The voltage applied to the motor 91 was set to a constant value. However, the voltage applied to the second motor 91 may not be gradually decreased from the third set time t3 to the fourth set time t4. Further, the voltage applied to the second motor 91 may not be set to a constant value from the fourth set time t4 to the stop time t5.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the technical concept thereof. For example, some of the parts described in the embodiment (or one or more aspects thereof) may be omitted, or some parts may be combined. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims

A shift device,
A knob that is rotated to select a shift range of the transmission of the vehicle;
A locking member for restricting rotation of the knob;
A cam member for displacing the lock member between a restricted position and a non-restricted position;
A drive source for rotating the cam member;
A control unit for controlling the drive source,
The drive source includes a first gear that transmits a drive force of the drive source to the cam member;
The cam member includes a second gear that meshes with the first gear and receives the driving force of the driving source;
The controller is
Between the first set time which is the transmission start time when the first gear and the second gear mesh with each other and the transmission of the driving force is started after the first gear starts rotating. , Set the voltage applied to the drive source to the lowest voltage,
During the period from the first set time to a preset second set time, the voltage applied to the drive source is gradually increased from the minimum voltage,
Gradually reducing the voltage applied to the drive source between the third set time and the fourth set time;
The voltage applied to the drive source between the fourth set time and the stop time for stopping the lock member is set to a constant value,
The third set time is set after the second set time,
The shift device, wherein the fourth set time is set a predetermined time before the stop time.
The shift device according to claim 1, wherein the cam member has a shape such that movement of the lock member is suppressed from the fourth set time to the stop time.
A detection unit for detecting the position of the lock member;
The controller is
3. The device according to claim 1, further configured to stop application to the drive source when the detection unit detects that the lock member has reached the restriction position or the non-regulation position. Shift device.
The controller is
When it is determined that the movement of the lock member has not been completed based on the detection result of the detection unit by the fifth set time, the sixth set time is preset from the sixth set time set after the fifth set time. The voltage applied to the drive source is gradually increased until the seventh set time set after the set time,
The shift device according to claim 3, wherein the fifth set time is the stop time.
A spring for urging the lock member toward the restriction position;
The lock member according to any one of claims 1 to 4, wherein the lock member is moved from the restriction position to the non-restriction position by the cam member, and is moved from the non-restriction position to the restriction position by the spring. Shift device.