JP2014117074A - Actuator - Google Patents

Abstract

An object of the present invention is to provide an actuator capable of reducing the installation space of two detection means for detecting the position of a pin in the forward / backward direction of the pin and miniaturizing a housing.
An actuator includes a housing and a lock pin 50 protruding from the outer surface of the housing. In the housing, a drive mechanism 100 for moving the lock pin 50 back and forth in the front-rear direction and a lock pin 50 are provided. The rods 74 and 64 (members to be detected) that move in conjunction with each other and the pin detection device 200 that detects the position of the lock pin 50 are accommodated, and the pin detection device 200 has the lock pin 50 up to a predetermined position on the advance side. An advance-side switch 210 (detection means) that detects the rod 74 when it advances, and a reverse-side switch 220 (detection means) that detects the rod 64 when the lock pin 50 retracts to a predetermined position on the retraction side. The switches 210 and 220 are arranged side by side in the left-right direction.
[Selection] Figure 6

Description

  The present invention relates to an actuator.

  When charging a storage battery mounted on a vehicle such as an electric vehicle or a hybrid vehicle, power is supplied from the charging cable to the storage battery by attaching the charging connector of the charging cable to the power receiving connector provided on the vehicle body.

As a lock mechanism for preventing the charging connector from being detached from the power receiving connector, a hook provided on the charging connector so as to be tiltable, an engagement protrusion provided on the power receiving connector, and an actuator provided around the power receiving connector; (For example, refer to Patent Document 1).
The actuator has a resin-made housing in which a drive mechanism is accommodated, and a lock pin protruding from the housing is freely movable back and forth.
The housing is attached to the inner surface of the wall portion of the charging port of the vehicle body, and the lock pin protrudes outside through the insertion hole of the wall portion of the charging port.

  In the lock mechanism described above, when the charging connector is attached to the power receiving connector, the hook of the charging connector is engaged with the engaging protrusion of the power receiving connector, and the lock pin of the actuator is in a position that restricts the tilt of the hook. Advance. Thereby, since the hook is fixed in a state of being engaged with the engaging protrusion, it is possible to prevent the charging connector from being detached from the power receiving connector.

JP 2012-181985 A

  In the conventional actuator described above, it is necessary to reliably advance the lock pin to a predetermined position and to reliably retract the lock pin. Therefore, it is desirable to detect the position of the lock pin when the lock pin is advanced and retracted, and stop the lock pin based on the detection result.

  As a method of detecting the position of the lock pin, two switches on the advancing side and retreating side are arranged in series in the movement direction of the lock pin, and both switches detect the detected member moving in conjunction with the lock pin. Thus, there is a method for detecting the position of the lock pin. However, in the detection method described above, the installation space for both switches increases in the movement direction of the lock pin, which is a factor that hinders the miniaturization of the housing.

  The present invention provides an actuator that solves the above-described problems and can reduce the installation space of two detection means for detecting the position of the pin in the forward and backward direction of the pin, and can reduce the size of the housing. This is the issue.

  In order to solve the above-mentioned problems, the present invention provides an actuator including a hollow housing and a pin protruding from the outer surface of the housing, wherein the drive mechanism moves the pin forward and backward in the housing. And a member to be detected that moves in the front-rear direction in conjunction with the pin, and a pin detection device that detects the position of the pin. The pin detection device includes an advancing-side detection means for detecting the detected member when the pin has advanced to a predetermined position on the advancing side, and the pin detection device when the pin has retracted to a predetermined position on the retreating side. And a retreat-side detection means for detecting the detection member, and both the detection means are arranged in parallel in the left-right direction.

As described above, when two detection means are arranged side by side in the left-right direction, the length in the front-rear direction of the installation space for both detection means (the length in the forward and backward direction of the pin) can be reduced. The length of the housing can also be reduced, so that the housing can be reduced in size.
Note that it is not necessary for both detection means to be arranged in parallel in the left-right direction, and it is sufficient that at least a part of both detection means is arranged in parallel in the left-right direction.

  In the above-described actuator, the drive mechanism includes a holder that holds the pin, and a cam member having a cam that contacts the holder, and the cam member rotates so that the holder is moved back and forth by the cam. It is desirable that the advancing-side detection means detect the detected member provided on the cam member.

  In this configuration, when the cam pushes out the holder to the advance side, the pin position is detected based on the cam rotation angle (displacement amount). Therefore, when the pin is advanced, the pin position is accurately determined. Can be detected.

  In the actuator described above, when the drive mechanism includes a holder that holds the pin, and the both detection means include a detection unit that detects the detected member provided in the holder, the both detection means It is desirable that the detectors are arranged in opposite directions in the front-rear direction, the detection units of the detection means are arranged at intervals in the front-rear direction, and the member to be detected is arranged between the detection units. Thus, when both detection means are comprised so that one to-be-detected member may be detected, the movement area | region of a to-be-detected member can be made small, and a housing can be reduced in size.

  In the actuator described above, both the detection means are attached to one surface of a substrate accommodated in the housing, and the detected member is arranged on one side of the substrate and is in contact with both the detection means. In this case, it is desirable to form a support protrusion for supporting the other surface of the substrate in the housing.

  In this configuration, since the substrate is supported by the support protrusion, it is possible to prevent the substrate from being bent by the pressing force when the detection means is pushed by the member to be detected. Thereby, since a detection means can be pushed in reliably by a to-be-detected member, the detection accuracy of a pin detection apparatus can be improved.

  In the actuator of the present invention, the installation space for the two detection means can be reduced in the forward / backward direction of the pin, and the housing can be reduced in size.

It is the side view which showed the usage type of the actuator of 1st embodiment. It is the perspective view which showed the actuator of 1st embodiment. It is the disassembled perspective view which showed the actuator of 1st embodiment. It is the top view which showed the storage chamber of the actuator of 1st embodiment. It is the figure which showed arrangement | positioning of the switch of 1st embodiment, and is a top view of the state which the switch of the retreat side detected the rod. It is the figure which showed arrangement | positioning of the switch of 1st embodiment, and is a top view of the state which the switch of the advance side detected the rod. It is explanatory drawing which showed the positional relationship of the switch and rod of 1st embodiment, (a) is a side view in the state where the rod left | separated from the switch on the advancing side, (b) is the state which the switch on the advancing side detected the rod (C) is a side view of a state in which the switch on the retreat side detects the rod, and (d) is a side view of the state in which the rod is separated from the switch on the retreat side. It is the top view which showed the mark formed in the bottom face of the housing lower of 1st embodiment. It is the figure which showed arrangement | positioning of the switch of 2nd embodiment, (a) is a top view in the state in which the switch of the retreat side detected the rod, (b) is a top view in the state in which the switch of the advancing side detected the rod .

Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the description of each embodiment, the same constituent elements are denoted by the same reference numerals, and redundant descriptions are omitted.

[First embodiment]
The actuator 10 of 1st embodiment comprises the locking mechanism 5 with which the charging port 2a of vehicles 1 such as an electric vehicle and a hybrid vehicle are equipped as shown in FIG. The lock mechanism 5 prevents the charging connector 4 from being detached from the power receiving connector 3 when charging a storage battery (not shown) mounted on the vehicle 1.

  In the following description, “upper and lower”, “front and rear”, and “left and right” of the actuator 10 are set for convenience in describing the structure of the actuator 10, and do not limit the orientation of the actuator 10. . FIG. 1 shows a state in which the actuator 10 of the first embodiment is mounted on a vehicle. As shown in FIG. 1, the actuator 10 of the first embodiment has a rear side facing downward about 30 degrees with respect to a horizontal plane. It is attached to the vehicle in a tilted state.

  The charging port 2 a of the vehicle body 2 is a space in which the distal end portion of the power receiving connector 3 is accommodated. The power receiving connector 3 is inserted through the opening of the wall 2b of the charging port 2a, and the tip of the power receiving connector 3 projects into the charging port 2a. The power receiving connector 3 is electrically connected to a storage battery (not shown) via a cable (not shown). In addition, the power receiving connector 3 is inclined about 30 degrees with respect to the horizontal plane so that the power receiving connector 3 is lowered from the front end side toward the vehicle inner side.

  The charging cable 4a is provided in a charging device (not shown) such as a charging station. A charging connector 4 is provided at the tip of the charging cable 4a. By attaching the charging connector 4 to the power receiving connector 3, power can be supplied from the charging device to the storage battery (not shown) through the charging cable 4a.

  The lock mechanism 5 includes a hook 4 b provided at the front end of the charging connector 4, an engagement protrusion 3 b formed at the front end of the power receiving connector 3, and an actuator 10 provided above the power receiving connector 3. Has been. The hook 4b can tilt up and down.

  When the charging connector 4 is inserted into the power receiving connector 3, the hook 4b in contact with the engaging protrusion 3b tilts upward. When the hook 4b gets over the engaging protrusion 3b, the hook 4b tilts downward, and the hook 4b and the engaging protrusion 3b are engaged. As described above, the hook 4 b is hooked on the engaging protrusion 3 b, so that the charging connector 4 cannot be pulled out from the power receiving connector 3.

The actuator 10 regulates the tilt of the hook 4b in a state where the hook 4b is engaged with the engagement protrusion 3b. The actuator 10 includes a housing 20 in which a drive mechanism is accommodated, and a lock pin 50 protruding from the front surface of the housing 20.
The housing 20 is arranged on the vehicle interior side of the wall 2b of the charging port 2a. The lock pin 50 is movable back and forth in the front-rear direction with respect to the housing 20, and protrudes into the charging port 2a through an insertion hole formed in the wall 2b.

  As shown in FIG. 2, the housing 20 is a resin box, and the lock pin 50 protrudes from the front surface 34a. As shown in FIG. 3, the housing 20 includes a housing lower 30 in which the internal space is the accommodation space 31, and a housing upper 40 that closes the opening 32 of the housing lower 30. A housing space 31 is formed in the housing 20 by combining the housing lower 30 and the housing upper 40.

The housing lower 30 is a box-shaped member having an opening 32 formed on the upper surface, and has a flat bottom 33 and a peripheral wall 34 erected on the outer peripheral edge of the bottom 33. The peripheral wall portion 34 is a frame surrounding the accommodation space 31 and is formed in a substantially rectangular shape in plan view.
The bottom 33 is formed in a substantially square shape in plan view (see FIG. 4). A male connector 35 protrudes downward from the right rear portion of the bottom 33. The male connector 35 is fitted with a female connector (not shown) for supplying power to the drive mechanism. The female connector is electrically connected to a control device (not shown) mounted on the vehicle 1 (see FIG. 1).

  On the front surface 34a of the peripheral wall portion 34 of the housing lower 30, a mounting portion 36a that is attached to the inner surface of the wall portion 2b (see FIG. 1) of the charging port 2a is projected. In addition, on the lower surface of the housing lower 30, two left and right housing support portions 36b attached to the power receiving connector 3 (see FIG. 1) are formed.

  The opening edge portion 37 (the upper end edge portion of the peripheral wall portion 34) of the housing lower 30 protrudes outwardly from the outer surface of the peripheral wall portion 34 in a flange shape. A seal groove 37a into which an endless seal member (not shown) is fitted is formed on the upper surface of the opening edge 37 (see FIG. 4).

The housing upper 40 is a flat lid member for closing the opening 32 of the housing lower 30. The outer peripheral shape of the housing upper 40 is formed in the same shape as the outer peripheral shape of the opening edge portion 37 of the housing lower 30.
The outer peripheral edge of the housing upper 40 is engaged with the opening edge 37 of the housing lower 30 and is bonded to the opening edge 37 with an adhesive such as hot melt.
Further, the space between the housing lower 30 and the housing upper 40 is liquid-tightly sealed by a seal member (not shown) provided at the opening edge 37 of the housing lower 30.

A plate-like plate inner 45 is fitted into the opening 32 of the housing lower 30. The plate inner 45 supports the lock pin 50, components of the drive mechanism 100, and the substrate 300, which will be described later, and is supported by a support portion protruding from the inner surface of the peripheral wall portion 34.
A notch 45a for inserting switches 210 and 220, which will be described later, in the vertical direction is formed in the right front portion of the plate inner 45.

The lock pin 50 is a shaft member having a circular cross section, and the axial direction is arranged in the front-rear direction. The front end portion of the lock pin 50 is formed in a hemispherical surface.
As shown in FIG. 4, the rear portion of the lock pin 50 is housed in the housing space 31 of the housing lower 30 and is inserted into a bearing hole 45 b (see FIG. 3) formed in the plate inner 45. Further, the front portion of the lock pin 50 protrudes outward from the front surface 34 a of the peripheral wall portion 34.

  In the housing space 31 of the housing lower 30, as shown in FIG. 3, a drive mechanism 100 that moves the lock pin 50 back and forth (axial direction), a pin detection device 200 that detects the position of the lock pin 50, and a substrate 300 are accommodated.

  The drive mechanism 100 includes a holder 60 that holds the lock pin 50, a cam member 70 having a cam gear 72 on which a cam 73 projects, an electric motor 80, an output shaft 81 of the electric motor 80, and the cam gear 72. And an intervening drive transmission member 90.

  The cam member 70 is a member for moving the holder 60 in the front-rear direction, and includes a rotary shaft 71 whose axial direction is arranged vertically, a cam gear 72 that is a spur gear having the rotary shaft 71 as a central axis, and a cam gear. And a cam 73 that protrudes from the lower surface of the cam gear 72 and is eccentric with respect to the rotation center of the cam gear 72.

  A lower portion of the rotating shaft 71 is inserted into a cam housing frame 62 (see FIG. 4), which will be described later, and a lower end portion of the rotating shaft 71 is rotatably supported on the bottom surface 33a of the housing lower 30. The upper portion of the rotating shaft 71 is rotatably supported by the plate inner 45, and the upper end portion of the rotating shaft 71 protrudes to the outside through the through hole of the housing upper 40.

The cam 73 is a part that pushes out a holder 60 to be described later in the front-rear direction (see FIGS. 5 and 6), and protrudes from the lower surface of the cam gear 72.
As shown in FIG. 4, the cam 73 is formed in a substantially triangular outer peripheral shape in plan view, and the center position of the cam 73 is eccentric to the right side with respect to the rotation shaft 71.

The rotation angle of the cam gear 72 is set so that the cam member 70 reciprocates in the range of about １ ／ rotation around the axis of the rotation shaft 71 in the region where the center position of the cam 73 is on the right side of the rotation shaft 71. ing.
The cam gear 72 is formed with a rod 74 ("detected member" in the claims) protruding outward in the radial direction (see FIG. 3).

  The electric motor 80 has an output shaft 81 protruding from the motor housing 82, and a cylindrical screw gear 81 a is fitted on the output shaft 81.

As shown in FIG. 3, the drive transmission member 90 includes a rotary shaft 91 whose axial direction is arranged in the vertical direction, a lower gear 92 that is a helical gear with the rotary shaft 91 as a central axis, and a rotary shaft 91. And an upper gear 93 that is a spur gear serving as a central axis.
The lower end portion of the rotation shaft 91 is rotatably supported on the bottom surface 33 a of the housing lower 30, and the upper end portion of the rotation shaft 91 is rotatably supported on the plate inner 45.
As shown in FIG. 4, the lower gear 92 is connected to the screw gear 81 a of the electric motor 80, and the upper gear 93 is connected to the cam gear 72.

  When the screw gear 81a of the electric motor 80 is rotated, the driving force is transmitted to the lower gear 92, and the drive transmission member 90 rotates about the axis. As a result, the driving force is transmitted from the upper gear 93 to the cam gear 72, and the cam 73 rotates around the axis, whereby the cam 73 rotates around the axis of the rotating shaft 71.

The holder 60 is mounted on the bottom surface 33a of the housing lower 30 so as to be movable in the front-rear direction.
A rear portion of the lock pin 50 is attached to the front end surface of the holder 60, and a cam housing frame 62 in which the cam 73 is housed is opened at the rear portion of the holder 60.
The cam housing frame 62 opens in the vertical direction, and the cam 73 is inserted from above. The inner peripheral surface of the cam housing frame 62 is a cam receiving surface with which the cam surface of the cam 73 abuts.
A rod 64 (a “detected member” in the claims) that protrudes rightward is formed on the front portion of the right side surface of the holder 60 (see FIG. 3).

  An elastic member 51 is interposed between the front end surface of the holder 60 and the inner surface of the peripheral wall portion 34. The elastic member 51 is a coil spring, and the lock pin 50 is inserted therethrough. The elastic member 51 is not limited to a coil spring, and various elastic members such as rubber and a disc spring can be used.

Further, on the bottom surface 33a of the housing lower 30, as shown in FIG. 8, when assembling the holder 60 and the cam member 70 to the bottom surface 33a, marks 33b and 33c for determining the position and orientation of the holder 60 and the cam member 70 are provided. Is formed.
The mark 33b on the cam member 70 side is a line (thick line portion indicated by reference numeral 33b in FIG. 8) that is an outline of the rod 74 of the cam gear 72. Further, the mark 33c on the holder 60 side is a line (thick line portion indicated by the reference numeral 33c in FIG. 8) that is a copy of the outline of the rear portion of the holder 60.
When the cam member 70 and the holder 60 are assembled to the bottom surface 33a in accordance with both the marks 33b and 33c, the cam 73 of the cam member 70 is accommodated in the cam housing frame 62 of the holder 60.

  When the holder 60 and the cam member 70 are assembled to the bottom surface 33a, the holder 60 is first assembled to the bottom surface 33a in accordance with the mark 33c, and then the rod 74 of the cam member 70 is aligned to the mark 33b. When assembled on the upper surface, the cam 73 enters the cam housing frame 62. Thus, by using both marks 33b and 33c, the cam member 70 and the holder 60 can be smoothly assembled to the bottom surface 33a.

As shown in FIG. 3, the substrate 300 is formed wide in the left-right direction (see FIG. 5) and is placed on the upper surface of the plate inner 45. The substrate 300 of this embodiment is disposed on the front and right sides in the opening 32 of the housing lower 30.
The board 300 controls the drive of the electric motor 80, and two switches 210 and 220, the electric motor 80, and the male connector 35 described later are electrically connected.
5 and 6, the illustration of the plate inner 45 is omitted for easy understanding of the positional relationship between the drive mechanism 100 and the switches 210 and 220.

In the actuator 10, as shown in FIG. 4, when the screw gear 81 a of the electric motor 80 is rotated, the driving force is transmitted to the cam gear 72 via the drive transmission member 90.
As shown in FIG. 6, when the cam gear 72 is rotated clockwise (clockwise), the cam 73 rotates and moves forward while the cam 73 is in contact with the front inner peripheral surface of the cam housing frame 62. The cam housing frame 62 is pushed forward by the cam 73.
As a result, the holder 60 moves forward, the lock pin 50 advances forward, and the amount of protrusion of the lock pin 50 relative to the housing 20 increases.
At this time, the elastic member 51 (see FIG. 4) contracts between the holder 60 and the peripheral wall portion 34, the elastic force of the elastic member 51 acts on the holder 60, and the inner peripheral surface on the front side of the cam housing frame 62. Since the holder 60 and the lock pin 50 are stabilized by maintaining the state in contact with the cam 73, the lock pin 50 can be accurately stopped at a predetermined advance position.

  The cam 73 has an arcuate area formed with a constant radius with respect to the center of rotation. In the rotation angle of the cam 73, the section where the above-described region is in contact with the cam housing frame 62 is a stop angle (dead zone) where the holder 60 is not pushed forward even if the cam 73 rotates clockwise. The pin 50 is in a stopped state.

In the actuator 10, when the cam gear 72 is rotated counterclockwise (counterclockwise) from the state in which the lock pin 50 is advanced as shown in FIG. 5, the cam 73 rotates and moves backward. 73 pushes the inner peripheral surface of the cam housing frame 62 rearward, so that the lock pin 50 retracts backward, and the amount of protrusion of the lock pin 50 relative to the housing 20 can be reduced.
In the present embodiment, when the cam 73 rotates rearward, the elastic force of the elastic member 51 (see FIG. 4) acts on the holder 60, and the inner peripheral surface on the front side of the cam housing frame 62 acts on the cam 73. In the contacted state, the holder 60 moves backward as the cam 73 rotates. As described above, when the lock pin 50 is retracted, the holder 60 and the lock pin 50 are stabilized by maintaining the state in which the inner peripheral surface on the front side of the cam housing frame 62 is in contact with the cam 73. 50 can be accurately stopped at a predetermined retraction position.

As shown in FIG. 1, when a control device (not shown) detects that the charging connector 4 is attached to the power receiving connector 3, the lock pin 50 moves into the housing 20, and the lock pin 50 The front portion is disposed above the hook 4 b of the charging connector 4.
As a result, the tilt of the hook 4b is regulated by the lock pin 50, and the hook 4b is fixed in a state of being engaged with the engaging protrusion 3b of the power receiving connector 3, thereby preventing the charging connector 4 from being detached from the power receiving connector 3. Can do.
Then, after the advancement of the lock pin 50 is stopped, charging from the charging device (not shown) to the storage battery (not shown) is started.

When a lock release signal is input to the control device (not shown) after charging, the lock pin 50 retreats with respect to the housing 20, and the front portion of the lock pin 50 retreats from above the hook 4 b of the charging connector 4. To do.
As a result, the hook 4 b can be tilted, the hook 4 b can be detached from the engagement protrusion 3 b of the power receiving connector 3, and the charging connector 4 can be pulled out from the power receiving connector 3.

  As shown in FIG. 3, a lock release lever 42 attached to the upper end portion of the rotating shaft 71 of the cam member 70 is provided on the upper surface of the housing upper 40 (see FIG. 2). By rotating the unlocking lever 42, the cam member 70 can be forcibly rotated manually and the lock pin 50 can be retracted.

Next, the pin detection apparatus 200 of 1st embodiment is demonstrated.
As shown in FIG. 5, the pin detection device 200 detects the position of the lock pin 50 in the front-rear direction. The advance-side switch 210 (“detecting means” in the claims) and the retreat-side switch 220 ("detecting means" in the claims).

Both switches 210 and 220 are juxtaposed in the left-right direction, and are attached to the front right side of the lower surface 300b of the substrate 300 (see FIGS. 7A and 7C). Both switches 210 and 220 are electrically connected to the substrate 300.
In the first embodiment, the front part of the advancing switch 210 arranged on the left side and the rear part of the retreating switch 220 arranged on the right side are juxtaposed in the left-right direction.

  Both switches 210, 220 project to the lower side of the plate inner 45 through the notch 45 a of the plate inner 45, and are arranged on the right side of the lock pin 50, the holder 60 and the cam gear 72.

  As shown in FIG. 7A, the advance-side switch 210 includes a box-shaped switch body 210a attached to the lower surface 300b of the substrate 300, and an inclined plate 210b provided on the lower surface of the switch body 210a. Yes.

A detection pin 210c (a “detection portion” in the claims) that can be moved back and forth in the vertical direction protrudes from a front portion of the lower surface of the switch body 210a. The detection pin 210c is urged downward.
The inclined plate 210b has a front end abutted against the lower end of the detection pin 210c, and a rear end connected to the lower surface of the switch body 210a so as to be tiltable in the vertical direction. The inclined plate 210b is urged upward, and the upper surface of the inclined plate 210 is always in contact with the lower end portion of the detection pin 210c.

  As shown in FIG. 7B, the advance-side switch 210 outputs a detection signal to the substrate 300 when the inclined plate 210b is pushed up and the detection pin 210c is pushed into the switch body 210a to a predetermined amount. It is configured as follows.

  As shown in FIGS. 7C and 7D, the retreat-side switch 220 has the same structure as the advancing-side switch 210, and a switch body 220a attached to the bottom surface 300b of the substrate 300, and a bottom surface of the switch body 220a. And an inclined plate 210b provided on the surface.

  As shown in FIG. 5, the switch body 210 a and 220 a are disposed in the front-rear direction opposite to the forward-side switch 210 and the backward-side switch 220. Further, the forward-side switch 210 has a detection pin 210c disposed at the front part of the switch body 210a, and the retreat-side switch 220 has a detection pin 220c disposed at the rear part of the switch body 220a. In this way, the detection pins 210c and 220c of both the switches 210 and 220 are arranged with a space in the front-rear direction. Further, the detection pins 210c and 220c of both the switches 210 and 220 are arranged side by side in the left-right direction.

  In the pin detection device 200, as shown in FIGS. 5 and 6, the advance-side switch 210 detects the rod 74 of the cam member 70, and the retreat-side switch 220 detects the rod 64 of the holder 60. ing.

The retreat-side switch 220 is arranged so that the longitudinal direction of the switch body 220a is the front-rear direction.
The switch 210 on the advancing side is inclined to the right as the switch body 220a moves from the front to the rear so that the longitudinal direction of the switch body 210a is tangential to the movement path of the rod 74 of the cam member 70. The right rear portion of the traveling-side switch 210 is disposed behind the regression-side switch 220.

  As shown in FIG. 6, when the cam gear 72 rotates clockwise (clockwise) and the rod 74 moves forward, the rod 74 moves to the forward side switch 210 as shown in FIG. 7B. The lower surface of the inclined plate 210b is slid forward. Then, as the rod 74 moves forward, the inclined plate 210b is pushed up by the rod 74, and the detection pin 210c is pushed in. At this time, as shown in FIG. 7 (d), the rod 64 of the holder 60 moves forward, and the rod 64 is disposed at a position away from the retreat-side switch 220.

  As shown in FIG. 6, the switch 210 on the advance side detects when the lock pin 50 is in the most advanced state, and when the rotation angle of the cam 73 reaches an intermediate position of the stop angle (dead zone). It is set to output a signal. In this way, when the pin detection device 200 detects that the lock pin 50 has advanced to a predetermined position on the advance side, a detection signal is sent from the advance side switch 210 via the substrate 300 (not shown). ) And the control device stops the rotation of the output shaft 81.

  As shown in FIG. 5, when the cam gear 72 rotates counterclockwise (counterclockwise) and the holder 60 moves rearward, as shown in FIG. The lower surface of the inclined plate 220b slides rearward. Then, as the rod 64 moves rearward, the inclined plate 220b is pushed up by the rod 64, and the detection pin 220c is pushed in.

  As shown in FIG. 5, the retreat-side switch 220 is set to output a detection signal to the substrate 300 when the lock pin 50 moves to a position where it is most retracted. In this way, when the pin detection device 200 detects that the lock pin 50 has retracted to the predetermined position on the retreat side, a detection signal is sent from the retreat side switch 220 via the substrate 300 to a control device (not shown). ) And the control device stops the rotation of the output shaft 81.

On the lower surface 45c of the plate inner 45, as shown in FIGS. 7A to 7D, a plurality of support protrusions 310 that support the upper surface 300a of the substrate 300 are formed.
The support protrusion 310 prevents the substrate 300 from being bent upward by the pressing force when the inclined plates 210b and 220b of the switches 210 and 220 are pushed up by the rods 74 and 64.
The number and arrangement of the support protrusions 310 are not limited, and are appropriately set in consideration of the shape of the substrate 300 and the positions of the switches 210 and 220 so as to effectively prevent the substrate 300 from being bent.

A guide rail 38a that supports the rod 74 of the cam member 70 and a guide rail 38b that supports the rod 64 of the holder 60 protrude from the bottom surface 33a of the housing lower 30 (see FIG. 4).
As shown in FIG. 4, the guide rail 38 a that supports the rod 74 of the cam member 70 is curved in an arc shape in accordance with the movement locus of the rod 74, and when the cam member 70 rotates, the rod 74 is guided. The upper surface of the rail 38a is configured to slide.
The guide rail 38b that supports the rod 64 of the holder 60 is linearly formed in the front-rear direction in accordance with the movement locus of the rod 64. When the holder 60 moves in the front-rear direction, the rod 64 moves to the guide rail 38b. It is configured to slide on the upper surface.

  In the actuator 10 as described above, as shown in FIG. 5, the two switches 210 and 220 are juxtaposed in the left-right direction. Therefore, the length of the installation space of both the switches 210, 220 in the front-rear direction (the lock pin 50 The length in the forward / backward direction) can be reduced. Therefore, the length of the housing lower 30 in the front-rear direction can be reduced, and the housing 20 (see FIG. 2) can be downsized.

  Further, in the actuator 10, as shown in FIG. 6, the switch 210 on the advancing side detects the rod 74 of the cam gear 72, and when the cam 73 pushes the holder 60 to the advancing side, the rotation angle of the cam 73 Based on the (displacement amount), the position of the lock pin 50 is detected. In this configuration, when the lock pin 50 is advanced, the position of the lock pin 50 can be detected with high accuracy.

  Further, in the actuator 10, when the rotation angle of the cam 73 reaches the intermediate position of the stop angle after the rotation angle of the cam 73 reaches the stop angle (dead zone) and the lock pin 50 reaches the most advanced state, the advancement occurs. By configuring the side switch 210 to detect the rod 74, the detection accuracy of the position of the lock pin 50 can be easily increased.

Further, as shown in FIGS. 7A to 7D, since the substrate 300 is supported by the support protrusion 310 of the plate inner 45, the inclined plates 210b and 220b of the switches 210 and 220 are pushed up by the rods 74 and 64. When pressed, the substrate 300 can be prevented from being bent upward by the pressing force.
Further, the rod 74 of the cam member 70 and the rod 64 of the holder 60 are supported by both guide rails 38b and 38c projecting from the bottom surface 33a of the housing lower 30, and the rods 74 and 64 are inclined by the switches 210 and 220. When the plates 210b and 220b are pushed up, the reaction force can prevent the rods 74 and 64 from being bent downward.
Thus, since the substrate 300 and the rods 74 and 64 are supported by the support protrusion 310 and the guide rails 38a and 38b, the inclined plates 210b and 220b of the switches 210 and 220 are surely pushed up by the rods 74 and 64. Thus, the detection accuracy of the pin detection device 200 can be increased.

As mentioned above, although 1st embodiment of this invention was described, this invention is not limited to the said embodiment, In the range which does not deviate from the meaning, it can change suitably.
In the first embodiment, as shown in FIG. 6, the switch 210 on the advancing side detects the rod 74 of the cam member 70 and the switch 220 on the retreating side detects the rod 64 of the holder 60. Two rods may be formed, and both switches 210 and 220 may be configured to detect both rods of the cam member 70, respectively.
Further, the shapes of the rods 74 and 64 of the holder 60 and the cam member 70 are not limited. Further, a rod may be formed on the lock pin 50.

  The switches 210 and 220 of the first embodiment are configured such that the detection pins 210c and 220c are pushed by the inclined plates 210b and 220b, as shown in FIGS. 7A to 7D. The configuration of the switches 210 and 220 is not limited, and the detection pins 210c and 220c may be directly pushed by the rods 74 and 64. Furthermore, the detection means for detecting the rods 74 and 64 (members to be detected) is not limited to the contact type switches 210 and 220, and various detection means can be used. For example, non-contact type detection means such as an optical sensor may be used.

  In the first embodiment, the switch bodies 210a and 220a of both the switches 210 and 220 are arranged in opposite directions, but the switch bodies 210a and 220a of both switches 210 and 220 may be arranged in the same direction. Good.

  Further, in the first embodiment, the support protrusion 310 for supporting the substrate 300 protrudes from the lower surface 45c of the plate inner 45, but the support protrusion protrudes from the lower surface of the housing upper 40 (see FIG. 3). May be.

  In the first embodiment, as shown in FIG. 1, the actuator of the present invention is applied to the lock mechanism 5 for preventing the charging connector 4 from being detached from the power receiving connector 3. It can be applied to various actuators.

[Second Embodiment]
The actuator of the second embodiment has substantially the same configuration as the actuator 10 (see FIG. 3) of the first embodiment described above, and as shown in FIGS. 9A and 9B, the advance-side switch 210 and The difference is that both the retreat side switches 220 detect the rod 64 of the holder 60.

  In the pin detection device 200A of the second embodiment, the entire switch bodies 210a and 220a of both the switches 210 and 220 are juxtaposed in the left-right direction. Further, the switch bodies 210a and 220a are arranged in opposite directions in the front-rear direction, and both detection pins 210c and 220c are arranged at intervals in the front-rear direction. The rod 64 of the holder 60 is disposed between the front and rear detection pins 210c and 220c.

  In the pin detection device 200A, as shown in FIG. 9B, when the holder 60 moves forward, the rod 64 is detected by the switch 210 on the advance side. Further, as shown in FIG. 9A, when the holder 60 moves rearward, the rod 64 is detected by the retreat side switch 220.

  In the actuator of the second embodiment, since both switches 210 and 220 detect one rod 64, the rod moving region can be made smaller than when both switches 210 and 220 detect two rods, respectively. The housing can be reduced in size.

DESCRIPTION OF SYMBOLS 1 Vehicle 2a Charging port 3 Power receiving connector 3b Engaging protrusion 4 Charging connector 4b Hook 5 Lock mechanism 10 Actuator 20 Housing 30 Housing lower 31 Housing space 33a Bottom surface 33b Mark on the cam member side 33c Mark on the holder side 34 Circumferential wall 38a Guide rail 38b Guide rail 40 Housing upper 45 Plate inner 50 Lock pin 60 Holder 62 Cam housing frame 64 Rod (detected member)
70 Cam member 72 Cam gear 73 Cam 74 Rod (Detected member)
90 Drive transmission member 100 Drive mechanism 200 Pin detection device (first embodiment)
200A pin detection device (second embodiment)
210 Switch on the advancing side (detection means)
210a Switch body 210b Inclined plate 210c Detection pin (detection unit)
220 Regression side switch (detection means)
220a Switch body 220b Inclined plate 220c Detection pin (detection unit)
300 Substrate 310 Support protrusion

Claims (4)

An actuator comprising a hollow housing and a pin protruding from the outer surface of the housing,
In the housing,
A drive mechanism for moving the pin back and forth in the front-rear direction;
A detected member that moves in the front-rear direction in conjunction with the pin;
A pin detection device for detecting the position of the pin;
The pin detection device includes:
When the pin has advanced to a predetermined position on the advance side, the advance side detection means for detecting the detected member;
A retreat-side detection means for detecting the detected member when the pin retreats to a predetermined position on the retreat side, and
The actuator is characterized in that both detection means are arranged in the left-right direction. The drive mechanism is
A holder for holding the pin;
A cam member having a cam that contacts the holder,
When the cam member rotates, the holder is configured to be pushed in the front-rear direction by the cam.
2. The actuator according to claim 1, wherein the advancing side detecting means detects the detected member provided in the cam member. The drive mechanism includes a holder that holds the pin,
The both detection means have a detection unit for detecting the detected member provided in the holder,
The both detection means are arranged in the front-reverse direction, and the detection parts of the both detection means are arranged with an interval in the front-rear direction,
The actuator according to claim 1, wherein the detected member is disposed between the two detection units. The both detection means are attached to one surface of a substrate accommodated in the housing,
The member to be detected is arranged on one side of the substrate and is configured to come into contact with both detection means,
The actuator according to any one of claims 1 to 3, wherein a support protrusion for supporting the other surface of the substrate is formed in the housing.

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