JP6944361B2 - Push-push mechanism and lid switchgear equipped with it - Google Patents

Description

The present invention relates to a push-push mechanism and a lid switchgear including the push-push mechanism.

In the lid opening / closing device described in Patent Document 1 below, the fuel lid is opened / closed by a so-called push-push mechanism. Specifically, by pushing the fuel lid in the closing direction, the push rod of the push-push mechanism is held at the pushing position and the fuel lid is closed. On the other hand, by pushing the fuel lid again, the push rod is pushed out from the pushing position to the protruding position to open the fuel lid.

Briefly explaining this push-push mechanism, the push-push mechanism includes the push rod, a follower having a slider, a case having an accommodating portion for accommodating the follower, and a spring. At the pushing position, the slider is held by the step on the cam surface provided on the case, and the movement of the follower in the protruding direction side is restricted. On the other hand, when the push rod is pushed in at the pushing position, the holding state of the slider due to the step on the cam surface is released. Then, when the push rod is released, the slider slides along the cam surface due to the urging force of the spring. As a result, the follower rotates and the slider moves to the follower guide portion of the case, so that the push rod and the follower are allowed to move in the axial direction, and the push rod is extruded to the protruding position.

By the way, in the push-push mechanism, from the viewpoint of improving operability, it is preferable to reduce the pushing amount of the push rod at the pushing position. That is, it is preferable to shorten the length of the step on the cam surface.
Further, in the push-push mechanism, it is desirable to reduce the number of cam surfaces from the viewpoint of making the structure simple.

Japanese Unexamined Patent Publication No. 2014-173422

However, if the length of the step on the cam surface is shortened and the number of cam surfaces is reduced, the length of the cam surface in the circumferential direction of the accommodating portion becomes long, and the inclination angle of the cam surface seen from the radial direction of the accommodating portion is increased. Tends to become smaller (more gradual). Then, when the inclination angle of the cam surface becomes small, it becomes difficult for the slider to slide along the cam surface, and the follower may not rotate. That is, there is a risk that the push-push mechanism will not operate satisfactorily.

In view of the above facts, an object of the present invention is to provide a push-push mechanism capable of operating well and a lid opening / closing device provided with the push-push mechanism.

Embodiment 1: In one or more embodiments of the present invention, a push rod having one side in the axial direction as the protruding direction and the other side in the axial direction as the pushing direction can be maintained at the pushing position and pushed in the pushing direction at the pushing position. It is a push push mechanism that pushes out the pushed rod in the protruding direction and arranges it in the protruding position. A cam follower that is housed and has a slider and operates in conjunction with the push rod, a spring that urges the cam follower in the protruding direction, and a spring provided on the inner peripheral portion of the holder in the axial direction of the holder. It is provided between a plurality of cam grooves into which the slider is inserted so as to be relatively movable and unable to rotate relative to each other in the circumferential direction, and the cam grooves adjacent to each other in the circumferential direction of the holder, and is provided from the cam groove in the pushing direction. The cam follower is provided between the pair of inclined cam surfaces and the pair of inclined cam surfaces that rotate the cam follower to one side in the circumferential direction when the slider comes into contact with the cam follower when the cam follower is moved in the protruding direction. A first cam surface having a holding cam surface that holds the cam follower at the pushing position by abutting the slider, and the sliding when the cam follower detached from the cam groove in the pushing direction moves in the pushing direction. A second cam surface that rotates the cam follower to one side in the circumferential direction when the mover comes into contact with the cam follower is provided, and the radially inner portion of the holder on the inclined cam surface is the radial direction of the holder on the inclined cam surface. The push-push mechanism is located in the pushing direction with respect to the outer portion, and is characterized in that the slider abuts on the radial inner portion of the holder on the inclined cam surface.

Embodiment 2: One or more embodiments of the present invention is a lid opening / closing device provided with a push-push mechanism having the above configuration, which is provided at one end in the axial direction of the push rod and locks the fuel lid. The part and the push rod are rotatably connected to the push rod around the axis, and by rotating the push rod, the locking portion locks the fuel lid and the locking state of the locking portion. The push rod, the cam follower, and the spring are arranged coaxially, and the cam follower includes a spring that receives one end of the spring. It is a lid opening / closing device characterized in that a receiving portion is provided.

According to one or more embodiments of the present invention, the push-push mechanism can be operated satisfactorily.

FIG. 1A is a perspective view showing the entire lid opening / closing device to which the push-push mechanism of the present embodiment is applied, and FIG. 1B is a vehicle showing a state in which the cover of the lid opening / closing device is removed. It is a side view seen from the rear side. FIG. 2 is an exploded perspective view of the lid switchgear shown in FIG. 1 (A). FIG. 3 (A) is a partially broken side view showing a state in which the push rod is inserted into the holder at the pushing position, and FIG. 3 (B) shows the connected state of the push rod and the push push mechanism in the holder. It is a side view which shows with the removed state. FIG. 4A is a front view of the rotor shown in FIG. 2 as viewed from one side in the axial direction, and FIG. 4B is a perspective view showing an end portion of the rotor on one side in the axial direction. FIG. 4C is a back view of the rotor viewed from the other side in the axial direction, and FIG. 4D is a perspective view showing the other end of the rotor in the axial direction. 5 (A) is a front view of the holder shown in FIG. 2 as viewed from one side in the axial direction, and FIG. 5 (B) is a perspective view showing the end of the holder on one side in the axial direction. FIG. 6A is a perspective view showing one end of the holder in the axial direction, and FIG. 6B is a perspective view showing the other end of the holder in the axial direction. FIG. 7 (A) is a partially broken cross-sectional view showing the holder-side cam surface of the holder, and FIG. 7 (B) shows the first inclined cam surface shown in FIG. 7 (A) from the circumferential direction of the holder. It is a seen enlarged cross-sectional view (7B-7B line enlarged cross-sectional view of FIG. 7A). 8 (A) is a perspective view showing one side end in the axial direction showing the slider shown in FIG. 2, and FIG. 8 (B) is a perspective view showing the other end in the axial direction of the slider. FIG. 9 is a side sectional view showing a connected state of the push rod and the push push mechanism at the protruding position. FIG. 10A is a front view of the cam follower shown in FIG. 2 as viewed from one side in the axial direction, and FIG. 10B is a perspective view of the cam follower. FIG. 11 is a cross-sectional view (cross-sectional view taken along line 11-11 of FIG. 14B) of the emergency mechanism shown in FIG. 2 as viewed from the outside in the vehicle width direction. FIG. 12 (A) is a perspective view showing the periphery of the working groove shown in FIG. 11 with the emergency cable removed, and FIG. 12 (B) shows the emergency around the working groove shown in FIG. 12 (A). It is a perspective view which shows the state which arranged the cable. 13 (A) is a front view showing the unlocked posture of the push rod shown in FIG. 1, and FIG. 13 (B) is a front view showing the locked posture of the push rod. FIG. 14 (A) is a side view showing a state in which the push rod of the lid switchgear shown in FIG. 1 is arranged at a protruding position, and FIG. 14 (B) is a push rod from the state of FIG. 14 (A). Is a side view showing a state in which is pushed in the pushing direction and arranged at the pushing position. FIG. 15 (A) is a perspective view showing the connection state of the push rod and the holder in the unlocked posture, and FIG. 15 (B) is a perspective view showing the connected state of the push rod and the holder in the locked posture. .. FIG. 16 is an explanatory diagram for explaining the operation of the push-push mechanism. FIG. 16A shows a state in which the cam follower slider is locked to the holding cam surface of the holder at the pushing position, and FIG. 16B shows a state in which the slider is locked to the holding cam surface. The released state is shown, FIG. 16 (C) shows the state where the slider has reached the cam groove, and FIG. 16 (D) shows the slider and the cam follower move from the state of FIG. 16 (C) to the protruding position. It shows the state that it was done. FIG. 16 (E) shows a state in which the slider is pushed away from the cam groove by being pushed in the pushing direction from the protruding position, and FIG. 16 (F) shows the sliding of the cam follower when it is rearranged in the pushing position. Indicates a state in which the child is locked to the holding cam surface of the holder.

Hereinafter, the lid opening / closing device 10 to which the push-push mechanism 40 according to the present embodiment is applied will be described with reference to the drawings. As shown in FIGS. 14A and 14B, the lid opening / closing device 10 is configured as an opening / closing device for the fuel lid 70 that opens / closes the fuel filler port of the vehicle (automobile). The arrows UP, FR, and OUT, which are appropriately shown in the drawings, indicate the upper side of the vehicle, the front side of the vehicle, and the outer side in the vehicle width direction (left side of the vehicle), respectively. In the following description, when the directions of up and down and front and rear are shown, the directions of up and down and front and back of the vehicle shall be indicated unless otherwise specified.

As shown in FIGS. 1A and 1B, the lid opening / closing device 10 is formed in a substantially C-shaped block shape with the front-rear direction as the thickness direction as a whole when viewed from the rear side. The lid switchgear 10 includes a case 12 that constitutes the outer shell of the lid switchgear 10, a push rod 20 housed in the case 12, an electric drive mechanism 30 as a "drive mechanism", and a push push mechanism 40. It is configured to include. Further, the lid opening / closing device 10 has an emergency mechanism 60 that enables opening / closing of the fuel lid 70 in an emergency. Hereinafter, each configuration of the lid opening / closing device 10 will be described.

(About case 12)
As shown in FIG. 2, the case 12 is divided into two in the front-rear direction. Specifically, the case 12 is composed of a housing 14 forming a front side portion of the case 12 and a cover 16 forming a rear side portion of the case 12.

The housing 14 has a substantially concave shape that is open to the rear side, and is formed in a substantially C-shaped box shape when viewed from the rear side. A first accommodating portion 14A for accommodating the rotor 34 of the electric drive mechanism 30 and the push-push mechanism 40, which will be described later, is formed in the lower portion of the housing 14. The first accommodating portion 14A extends in the vehicle width direction, and the bottom wall 14A1 of the first accommodating portion 14A is curved in a substantially semicircular shape open to the rear side. Further, the inner end portion of the first accommodating portion 14A in the vehicle width direction is open.

A second accommodating portion 14B for accommodating the motor 32 of the electric drive mechanism 30, which will be described later, is formed on the upper portion of the housing 14, and the second accommodating portion 14B extends in the vertical direction. A communication groove 14C for communicating the first accommodating portion 14A and the second accommodating portion 14B is formed. Further, a circular communication hole 14E for communicating the inside and the outside of the case 12 is formed through the side wall of the first accommodating portion 14A on the outer side in the vehicle width direction. A waterproof cap 18 having a substantially circular ring shape is attached to the communication hole 14E.

The cover 16 is formed in a lid shape with the front-rear direction as the plate thickness direction, and is formed in a substantially C-shape corresponding to the opening of the housing 14 when viewed from the rear side. Then, the cover 16 is fastened and fixed to the housing 14 by screws SC so as to close the opening of the housing 14.

(About push rod 20)
As shown in FIGS. 1 to 3 and 9, the push rod 20 is formed in a substantially bottomed cylindrical shape with the vehicle width direction as the axial direction, and is opened inward in the vehicle width direction. A portion of the push rod 20 on one side in the axial direction (outside in the vehicle width direction) is inserted into the communication hole 14E (waterproof cap 18) of the housing 14, and the push rod 20 is movable in the axial direction and is movable. It is supported by the communication hole 14E via the waterproof cap 18 so as to be rotatable in the circumferential direction. The details will be described later, but the position of the push rod 20 shown in FIG. 14 (B) is referred to as a "pushing position" (in a broad sense, a position grasped as an "initial position"), and the pushing position is defined as a "pushing position". , The tip end portion (one end portion in the axial direction) of the push rod 20 projects outward from the housing 14 in the vehicle width direction. Further, as shown in FIG. 14A, the position of the push rod 20 in which the push rod 20 has moved from the pushing position to one side in the axial direction as the “protruding direction” is referred to as a “protruding position”, and the protruding position is defined as the “protruding position”. Most of the push rods 20 project outward from the housing 14 in the vehicle width direction.

Further, in the following description, the arrow A direction side in FIG. 13 (B) is one side in the circumferential direction (axis circumference) of the push rod 20, and the arrow B direction in FIG. 13 (A) is the circumferential direction (axis) of the push rod 20. Rotation) The other side. The bottom wall 14A1 of the first accommodating portion 14A of the housing 14 is curved in an arc shape concentrically with the outer peripheral surface of the push rod 20.

As shown in FIGS. 13 and 14, a locking portion 20A is formed at the tip of the push rod 20, and the locking portion 20A has a substantially track shape with the axial direction of the push rod 20 as the plate thickness direction. It is formed in a plate shape. Further, a constricted portion 20B having a diameter smaller than that of the push rod 20 is formed inside the locking portion 20A in the vehicle width direction.

Here, as shown in FIG. 14, a fuel lid 70 for opening and closing the fuel filler port of the vehicle is provided on the outer side of the push rod 20 in the vehicle width direction. In the present embodiment, the fuel lid 70 is arranged on the outer side surface in the vehicle width direction (left side surface of the vehicle) at the rear part of the vehicle. An inner panel 72 is provided inside the fuel lid 70 (on the push rod 20 side), and a locking hole 72A is formed in the inner panel 72. The locking hole 72A is formed in a substantially truck shape similar to the locking portion 20A of the push rod 20 when viewed from the vehicle width direction, and the locking portion 20A can be inserted into the locking hole 72A. It is configured.

Then, as will be described in detail later, at the pushing position of the push rod 20, the locking portion 20A of the push rod 20 inserts into the locking hole 72A of the fuel lid 70, and the constricted portion 20B inserts into the locking hole 72A. The posture of the push rod 20 at that time (the posture shown in FIG. 13A) is referred to as an unlocked posture. In this state, the locking portion 20A and the peripheral edge portion of the locking hole 72A are in a non-engaged state, and the fuel lid 70 can be moved to the protruding direction side.
Further, a posture in which the push rod 20 is rotated from the unlocked posture to the other side in the circumferential direction (in the present embodiment, a posture rotated by approximately 90 degrees) is referred to as a locked posture (a posture shown in FIG. 13B). In the locked posture, the locking portion 20A engages with the peripheral edge portion of the locking hole 72A to lock the fuel lid 70 in a closed state. Hereinafter, for convenience, the push rod 20 will be described as a state in which the push rod 20 is arranged at the pushing position and is in the unlocked posture.

As shown in FIGS. 2 and 3, a plurality of rod guide protrusions (three locations in the present embodiment) protruding outward in the radial direction are provided on the outer peripheral portion of the push rod 20 on the other side in the axial direction. 20C is integrally formed. The rod guide protrusions 20C are arranged at equal intervals (every 120 degrees) in the circumferential direction of the push rod 20. The rod guide protrusion 20C is formed in a substantially rectangular block shape when viewed from the radial direction of the push rod 20. Further, inclined portions 20C1 are formed at both corners on the opposite side of the push rod 20 in the axial direction of the rod guide protrusion 20C, and the inclined portion 20C1 is the push rod 20 when viewed from the radial direction of the push rod 20. It is inclined in the direction of approaching each other toward the other side in the axial direction of.

Further, a regulation protrusion 20D projecting outward in the radial direction is integrally formed on the outer peripheral portion of the push rod 20 at the other end in the axial direction. The regulation protrusion 20D is arranged between the rod guide protrusions 20C adjacent to each other in the circumferential direction of the push rod 20 when viewed from the axial direction of the push rod 20. The regulation protrusion 20D is formed in a substantially rectangular block shape when viewed from the radial direction of the push rod 20. Further, an inclined portion 20D1 is formed at a corner portion on the other side of the push rod 20 in the axial direction of the regulation protrusion 20D, and the inclined portion 20D1 is in the axial direction of the push rod 20 when viewed from the radial direction of the push rod 20. The regulation protrusion 20D is inclined inward in the width direction toward the other side.

(About electric drive mechanism 30)
As shown in FIGS. 1B and 2, the electric drive mechanism 30 includes a motor 32 and a rotor 34.

<About motor 32>
The motor 32 is arranged with the vertical direction as the axial direction, and the motor body 32A of the motor 32 is housed inside the second housing portion 14B of the housing 14. The output shaft 32B of the motor 32 extends downward from the motor body 32A and is arranged in the communication groove 14C of the housing 14, and is arranged rearward of the push rod 20 in the first accommodating portion 14A. ing. That is, the output shaft 32B of the motor 32 is arranged orthogonal to the push rod 20 when viewed from the rear side. A worm gear 32C is formed on the outer peripheral portion of the output shaft 32B. Further, the motor 32 is electrically connected to the control unit 80 of the vehicle, and the motor 32 is driven by the control unit 80.

<About rotor 34>
The rotor 34 is formed in a substantially cylindrical shape with the vehicle width direction as the axial direction, and is rotatably housed in the outer portion of the housing 14 in the vehicle width direction of the first accommodating portion 14A. Specifically, the rotor 34 is arranged coaxially with the push rod 20 and adjacent to the front side of the output shaft 32B of the motor 32. A push rod 20 is inserted into the rotor 34, and the other end of the push rod 20 projects inward from the rotor 34 in the vehicle width direction.

As shown in FIG. 4, three guide grooves 34A are formed on the inner peripheral portion of the rotor 34 at positions corresponding to the rod guide protrusions 20C of the push rod 20 described above, and the guide grooves 34A are formed. Is opened inward in the radial direction of the rotor 34 and penetrates in the axial direction of the rotor 34. The rod guide protrusion 20C of the push rod 20 is inserted into the guide groove 34A so as to be relatively movable in the axial direction and not relatively movable in the circumferential direction. As a result, the rotor 34 is connected to the push rod 20 so as to be relatively movable in the axial direction and not relatively movable (integrally movable) in the circumferential direction.

A regulation groove 34B is formed at a position corresponding to the regulation projection 20D of the push rod 20 on the inner peripheral portion of the rotor 34 at the inner end in the vehicle width direction. The regulation groove 34B extends in the axial direction of the rotor 34 and is open to the inside in the radial direction and the inside in the vehicle width direction of the rotor 34. Then, when the push rod 20 moves from the pushing position to the protruding position, the regulating protrusion 20D penetrates into the regulating groove 34B. Further, the regulation protrusion 20D abuts on one end of the regulation groove 34B, so that the push rod 20 is restricted from moving to one side in the axial direction at the protrusion position.

The axially intermediate portion of the rotor 34 is a worm wheel portion 34C, and a gear screwing with the worm gear 32C of the motor 32 is formed on the outer peripheral portion of the worm wheel portion 34C. As a result, the motor 32 is driven and the rotor 34 rotates about the axis, so that the push rod 20 rotates integrally with the rotor 34 and transitions between the locked posture and the unlocked posture. ing.

Further, a connecting protrusion 34E forming an emergency mechanism 60, which will be described later, is formed on the outer peripheral portion of the outer peripheral end portion (one end portion in the axial direction) of the rotor 34 in the vehicle width direction, and the connecting protrusion 34E is radially outer side from the rotor 34. Is protruding to. Further, a contact piece 34F is integrally formed on the outer peripheral portion of the outer peripheral portion of the rotor 34 in the vehicle width direction. The contact piece 34F is formed in a substantially fan shape when viewed from the axial direction of the rotor 34, and protrudes outward in the radial direction from the rotor 34. The contact piece 34F is arranged at a distance of approximately 180 degrees in the circumferential direction of the rotor 34 with respect to the connecting projection 34E.

Then, as shown in FIG. 11, in the locked posture of the push rod 20, the contact piece 34F abuts on the first stopper 36 provided in the housing 14, and the other side in the circumferential direction of the rotor 34 (FIG. 11). The configuration is such that the rotation in the direction of the arrow B) is restricted. On the other hand, in the unlocked posture of the push rod 20, the contact piece 34F comes into contact with the second stopper 38 provided on the housing 14 and rotates on one side in the circumferential direction of the rotor 34 (the side in the direction of arrow A in FIG. 11). Is restricted.

(About push push mechanism 40)
As shown in FIG. 2, the push-push mechanism 40 includes a holder 42, a slider 44, a cam follower 46, and a spring 50, and is housed in the first housing portion 14A of the housing 14. There is. Then, at the protruding position, the push rod 20 is pushed toward the other side in the axial direction (inside in the vehicle width direction) as the "pushing direction", so that the push rod 20 is maintained at the pushing position by the push push mechanism 40. It has become. On the other hand, at the pushing position, the push rod 20 is pushed again in the pushing direction, so that the push rod 20 is pushed out in the protruding direction by the push push mechanism 40 and moves to the protruding position. Hereinafter, each configuration of the push-push mechanism 40 will be described.

<About holder 42>
As shown in FIGS. 3 (A) and 5 to 7, the holder 42 is formed in a substantially bottomed cylindrical shape that is open to the outside in the vehicle width direction. The holder 42 is housed in the inner portion of the first accommodating portion 14A in the housing 14 in the vehicle width direction, and is arranged adjacent to the rotor 34 on the inner side in the vehicle width direction (see FIG. 1 (B)). Then, the holder 42 is arranged coaxially with the push rod 20 and is fixed to the housing 14 together with the cover 16 by the screw SC.

In the holder 42, the portion from the axial intermediate portion to the opening side (protruding direction side) is referred to as the first holder portion 42A, and the portion from the axial intermediate portion to the bottom wall side (pushing direction side) is referred to as the second holder portion 42B. .. The inner diameter of the first holder portion 42A is set smaller than the inner diameter of the second holder portion 42B. That is, the inner peripheral portion of the first holder portion 42A projects inward in the radial direction with respect to the inner peripheral surface of the second holder portion 42B, and this protruding portion serves as the holder inner portion 42C. A plurality of (three locations in the present embodiment) cam grooves 42D for guiding the slider 44 and the cam follower 46, which will be described later, are formed in the holder inner portion 42C, and the cam grooves 42D are formed in the axial direction of the holder 42. It extends and penetrates the holder inner portion 42C. Further, the cam grooves 42D are arranged at equal intervals (every 120 degrees) in the circumferential direction of the holder 42. Then, in the circumferential direction of the holder 42, the guide groove 34A of the rotor 34 and the cam groove 42D are arranged at the same positions.

As shown in FIG. 7A, the portion between the cam grooves 42D adjacent to each other in the circumferential direction in the holder inner portion 42C is referred to as the holder side cam portion 42E. A holder-side cam surface 42F as a "first cam surface" is formed on the end surface of the holder-side cam portion 42E on the inner side (push-in direction side) in the vehicle width direction. That is, the holder-side cam surface 42F is formed in the axially intermediate portion of the holder 42, and also connects the inner side surfaces of the cam grooves 42D adjacent to each other in the circumferential direction. The holder-side cam surface 42F serves as a first inclined cam surface 42F1 as an "inclined cam surface" and an "inclined cam surface" arranged on one side of the holder 42 in the circumferential direction with respect to the first inclined cam surface 42F1. It is configured to include a second inclined cam surface 42F2 and a holding cam surface 42F3 connecting the first inclined cam surface 42F1 and the second inclined cam surface 42F2. Specifically, the first inclined cam surface 42F1 starts from the inner end in the vehicle width direction of the cam groove 42D when viewed from the radial direction of the holder 42, and protrudes in the direction from the starting point toward one side in the circumferential direction of the holder 42. It is inclined toward the outside in the vehicle width direction). The holding cam surface 42F3 extends from the end of the first inclined cam surface 42F1 in the pushing direction (inside in the vehicle width direction) of the holder 42 when viewed from the radial direction of the holder 42. That is, the holding cam surface 42F3 is formed along a surface orthogonal to the circumferential direction of the holder 42. The second inclined cam surface 42F2 is viewed from the radial direction of the holder 42 in the protruding direction (outside in the vehicle width direction) from the inner end (termination) of the holding cam surface 42F3 in the vehicle width direction toward one side in the circumferential direction of the holder 42. It is tilted and connected to the end of the cam groove 42D. As a result, the holder-side cam surface 42F is formed in a zigzag shape when viewed from the radial direction of the holder 42.

Further, as shown in FIG. 7 (B), the first inclined cam surface 42F1 and the second inclined cam surface 42F2 are seen in cross-sectional view from the circumferential direction of the holder 42, and the vehicles are oriented toward the inside in the radial direction of the holder 42. It is inclined inward in the width direction. That is, on the first inclined cam surface 42F1 and the second inclined cam surface 42F2, the inner end portion 42J on the inner side in the radial direction is arranged in the pushing direction (inside in the vehicle width direction) with respect to the outer end portion 42K on the outer side in the radial direction. There is. Then, the inclination angle θ of the first inclined cam surface 42F1 and the second inclined cam surface 42F2 viewed from the circumferential direction of the holder 42 (the first inclined cam surface 42F1 and the second inclined with respect to the surface orthogonal to the axial direction of the holder 42). The tilt angle of the cam surface 42F2) is set to approximately 5 degrees.

As shown in FIGS. 5 and 6, the opening end of the first holder portion 42A has a blocking extending in the circumferential direction of the holder 42 at a position outside the vehicle width direction with respect to the holder side cam surface 42F. The groove 42G is formed through. Further, an insertion groove 42H extending in the axial direction of the holder 42 is formed on the inner peripheral portion of the open end portion of the holder inner portion 42C. The insertion groove 42H is open to the opening side of the holder 42, and is arranged at a position corresponding to the regulation groove 34B of the rotor 34 when viewed from the axial direction of the holder 42. Further, as shown in FIG. 3A, the insertion groove 42H intersects one end of the blocking groove 42G at an intermediate portion thereof and communicates with the blocking groove 42G. That is, the blocking groove 42G extends from the intermediate portion of the insertion groove 42H to the other side in the circumferential direction of the holder 42.

When the push rod 20 is in the pushed position and in the unlocked posture, the base end portion (inner end portion in the vehicle width direction) of the push rod 20 is inserted into the open end portion of the holder 42. Specifically, the regulation protrusion 20D of the push rod 20 is inserted through the opening of the insertion groove 42H and is arranged at one end of the blocking groove 42G (intermediate portion of the insertion groove 42H). As a result, in this state, the axial movement of the push rod 20 is allowed by the insertion groove 42H.

Further, the regulation protrusion 20D is configured to be relatively movable in the circumferential direction of the holder 42, to be engaged in the axial direction, and to be inserted into the blocking groove 42G. Then, in the locked posture of the push rod 20, the push rod 20 and the rotor 34 rotate from the unlocked posture to the other side around the axis, and the regulation protrusion 20D is arranged at the other end of the blocking groove 42G. (See FIG. 15 (B)). As a result, in the axial direction of the holder 42, the regulation protrusion 20D engages with the other end of the blocking groove 42G, and the axial movement of the push rod 20 in the locked posture is blocked by the holder 42 (blocking groove 42G). It is configured. The other end of the blocking groove 42G is the blocking portion 42G1.

Further, the bottom portion of the insertion groove 42H (the portion on the pushing direction side of the blocking groove 42G) is the pushing allowance portion 42H1, and the pushing allowance portion 42H1 is directed to the blocking groove 42G side when viewed from the radial direction of the holder 42. It is formed in an open concave shape. Then, when the push rod 20 moves in the pushing direction in the unlocked posture of the push rod 20, the regulation protrusion 20D is accommodated in the pushing allowance portion 42H1 and pushed (moved) from the pushing position of the push rod 20 in the pushing direction. Is an acceptable configuration. On the other hand, the regulation protrusion 20D abuts on the bottom surface of the push allowance portion 42H1 to limit the push (movement) of the push rod 20 in the push direction. Further, a pair of inclined portions 42H2 are formed at the boundary portion of the pushing allowance portion 42H1 with the blocking groove 42G, and the pair of inclined portions 42H2 are mutually inclined as they are directed toward the pushing direction when viewed from the radial direction of the holder 42. It is tilted in the approaching direction.

<About slider 44>
As shown in FIGS. 2, 3 (B), 8 and 9, the slider 44 is formed in a substantially cylindrical shape with the vehicle width direction as the axial direction. Further, the slider 44 is arranged coaxially with the push rod 20 and is housed in the first holder portion 42A (open end portion) of the holder 42. Specifically, the end portion of the slider 44 on one side (protruding direction side) in the axial direction is arranged adjacent to the base end portion of the push rod 20.

Three guide protrusions 44A for sliders corresponding to the guide groove 34A and the cam groove 42D described above are integrally formed on the outer peripheral portion of the slider 44. The slider guide protrusion 44A is inserted into the cam groove 42D of the holder 42 so as to be relatively movable in the axial direction and not relatively movable in the circumferential direction. As a result, the slider 44 is connected to the holder 42 so as to be relatively movable in the axial direction. Then, at the protruding position of the push rod 20, the slider guide protrusion 44A is arranged so as to straddle between the cam groove 42D of the holder 42 and the guide groove 34A of the rotor 34, and the rotor 34 (that is, the push rod 20). The rotation is regulated by the slider 44 and the holder 42 (see FIG. 9).

A slider side cam portion 44B is formed at the end portion of the slider 44 on the other side (pushing direction side) in the axial direction. The slider-side cam portion 44B has a plurality of slider-side cam surfaces 44C as "second cam surfaces" (six locations in the present embodiment) constituting the end surface of the slider 44. The slider-side cam surfaces 44C are arranged side by side at predetermined intervals (every 60 degrees) in the circumferential direction of the slider 44. Further, the slider side cam surface 44C is formed in a substantially V shape protruding toward the pushing direction side when viewed from the radial direction of the slider 44. Specifically, the slider-side cam surface 44C includes a first inclined surface 44C1 and a second inclined surface 44C2 arranged on one side of the slider 44 in the circumferential direction with respect to the first inclined surface 44C1. ing. Further, in the state where the slider 44 is housed in the holder 42, the top of the cam surface 44C on the slider side is arranged substantially at the center in the width direction of the cam groove 42D of the holder 42 when viewed from the radial direction of the holder 42. ..

<About Cam Follower 46>
As shown in FIGS. 2, 9, and 10, the cam follower 46 is formed in a substantially bottomed cylindrical shape with the vehicle width direction as the axial direction as a whole, and is opened to one side (protruding direction side) in the axial direction. Has been done. The cam follower 46 is arranged coaxially with the push rod 20 and is housed inside the holder 42 so as to be relatively movable. Further, when the cam follower 46 is housed in the holder 42, a portion of the cam follower 46 on one side in the axial direction is inserted into the slider 44 so as to be relatively movable, and one end of the cam follower 46 in the axial direction is a push rod 20. It is designed to be inserted so that it can be rotated relative to the inside of. As a result, the cam follower 46 is connected to the push rod 20 so as to be relatively rotatable.

Three sliders 46A corresponding to the cam groove 42D of the holder 42 described above are integrally formed on the outer peripheral portion of the cam follower 46 in the intermediate portion in the axial direction, and the slider 46A is radially from the cam follower 46. It protrudes outward. The tip of the slider 46A is configured to be inserted into the cam groove 42D so as to be relatively movable in the axial direction and not relatively movable in the circumferential direction. A sliding surface 46A1 is formed on the surface of the slider 46A on the projecting direction side, and the sliding surface 46A1 is inclined in the projecting direction toward one side in the circumferential direction of the cam follower 46.

Then, in the axial direction of the cam follower 46, the sliding surface 46A1 is arranged so as to face the slider side cam surface 44C of the slider 44 described above, and is in contact with the first inclined cam surface 42F1 of the holder 42. Further, the slider 46A is arranged adjacent to the holding cam surface 42F3 of the holder 42 on the other side in the circumferential direction and is in contact with the holding cam surface 42F3. As a result, at the pushing position of the push rod 20, the movement of the cam follower 46 toward the protruding direction side and the rotation of the cam follower 46 toward one side in the circumferential direction are restricted. Further, as described above, in the first inclined cam surface 42F1 and the second inclined cam surface 42F2, the inner end portion 42J on the inner side in the radial direction is pushed in the pushing direction (inside in the vehicle width direction) with respect to the outer end portion 42K on the outer side in the radial direction. ) Is placed. Therefore, when the sliding surface 46A1 abuts on the first inclined cam surface 42F1 and the second inclined cam surface 42F2, the sliding surface 46A1 is set to abut on the inner end portion 42J (see FIG. 7B). ).

Further, a flange portion 46B protruding outward in the radial direction is formed in the axial intermediate portion of the cam follower 46. The flange portion 46B connects sliders 46A adjacent to each other in the circumferential direction except for the tip portion thereof. Further, the end faces of the slider 46A and the flange portion 46B on the pushing direction side are formed flush with each other, and the slider 46A and the flange portion 46B correspond to the "spring receiving portion" of the present application. A washer 48 is inserted from the right end of the cam follower 46, and the washer 48 is arranged adjacent to the inside of the flange portion 46B in the vehicle width direction.

<About Spring 50>
As shown in FIGS. 2, 3 (B), and 9, the spring 50 is configured as a compression coil spring and is mounted on the inner end of the cam follower 46 in the vehicle width direction. One end of the spring 50 (outer end in the vehicle width direction) is locked to the slider 46A and the flange 46B of the cam follower 46 via a washer 48, and the other end of the spring 50 (inner end in the vehicle width direction). The part) is locked to the bottom wall of the holder 42, and the spring 50 is compressed and deformed from the natural state. As a result, the push rod 20 is urged outward (protruding direction) in the vehicle width direction by the urging force of the spring 50 via the cam follower 46 and the slider 44.

(About Emergency Mechanism 60)
As shown in FIGS. 2, 11 and 12, the emergency mechanism 60 includes an emergency cable 64 and a cable arrangement mechanism unit 62 for arranging the emergency cable 64 in the case 12. ing.

The cable arrangement mechanism portion 62 has an operating groove 14F formed in the housing 14. The working groove 14F is formed through the bottom wall 14A1 of the first accommodating portion 14A, is arranged on the radial outer side of the rotor 34, and extends in the circumferential direction of the push rod 20. A connecting projection 34E of the rotor 34 is inserted into the working groove 14F so as to be relatively movable. Specifically, in the unlocked posture of the push rod 20, the connecting protrusion 34E is arranged at one end of the working groove 14F, and in the locked posture of the push rod 20, the connecting protrusion 34E is located at the other end of the working groove 14F. It is designed to be placed.

Further, the cable arrangement mechanism unit 62 has a pair of holding claws 14G for holding the emergency cable 64. The holding claws 14G are integrally formed on both side edges of the working groove 14F in the housing 14 in the width direction. The holding claw 14G is symmetrically configured when viewed from the longitudinal direction of the working groove 14F. Specifically, the holding claw 14G is formed in a substantially inverted L shape when viewed from the longitudinal direction of the operating groove 14F, and protrudes from the housing 14 to the outside of the housing 14, and the tip portion of the holding claw 14G is formed. , It protrudes inward in the width direction of the working groove 14F. Further, the pair of holding claws 14G are arranged apart from each other in the longitudinal direction of the operating groove 14F.

Further, in the housing 14, a cable insertion hole 14H is formed on the other side of the push rod 20 in the circumferential direction with respect to the working groove 14F, and the inside and the outside of the case 12 are communicated with each other by the cable insertion hole 14H. .. On the other hand, the cover 16 is formed with a cable accommodating portion 16A protruding rearward on the radial outer side of the rotor 34. The cable accommodating portion 16A is formed in a concave shape that is open to the front side, and is curved in a substantially semicircular shape that is concentric with the rotor 34 when viewed from the axial direction of the push rod 20.

Further, the cable arrangement mechanism unit 62 has a cable guide 14J for guiding the emergency cable 64, and the cable guide 14J is formed in the lower part of the housing 14. The cable guide 14J is formed in a groove shape that is open to the outside in the vehicle width direction, and is curved in a substantially quadrant arc shape that is convex diagonally forward and downward when viewed from the outside in the vehicle width direction.

The emergency cable 64 is made of resin and is formed in a substantially long shape having flexibility. The emergency cable 64 includes a cable main body 64A and a cable end portion 64B that constitutes a portion on the tip end side of the emergency cable 64. The cable body 64A is formed in a cable shape having a circular cross section, and the cable end portion 64B is formed in a long strip shape. Then, the tip end portion of the cable end portion 64B is inserted into the inside of the case 12 through the cable insertion hole 14H of the housing 14, and is curved along the bottom wall of the cable accommodating portion 16A.

Further, in the intermediate portion in the longitudinal direction of the cable end portion 64B, a notch portion 64C corresponding to the holding claw 14G described above is formed at the edge portions on both sides in the width direction, and the notch portion 64C is a plate of the cable end portion 64B. When viewed from the thickness direction, the cable end portion 64B is formed in a substantially trapezoidal shape open to the outside in the width direction. Then, by arranging the notch portion 64C at a position corresponding to the holding claw 14G and shifting the cable end portion 64B toward the tip side, the cable end portion 64B is arranged between the holding claw 14G and the housing 14 and held. It is held by the claw 14G. As a result, the cable end portion 64B is arranged in a state of being curved in an arc shape along the bottom wall 14A1 of the housing 14 (specifically, along the working groove 14F).

Further, the cable main body 64A extending from the cable end portion 64B to the base end side is arranged in the cable guide 14J and bent to the rear side. Although not shown, the grip portion 64D forming the base end portion of the emergency cable 64 is operably arranged between the trunk room of the vehicle and the body of the vehicle.

Further, a cable protrusion 64E is integrally formed on the inner surface of the intermediate portion in the longitudinal direction of the cable end portion 64B, and the cable protrusion 64E is projected from the cable end portion 64B toward the case 12 side into the working groove 14F. Have been placed. Then, as shown in FIG. 11, in the non-operating position of the emergency cable 64 and the locked posture of the push rod 20, the connecting protrusion 34E of the rotor 34 is on one side in the circumferential direction of the rotor 34 with respect to the cable protrusion 64E (FIG. 11). It is arranged adjacent to the arrow A direction side of.

Further, a handle portion 64F is integrally formed on the outer surface of the intermediate portion in the longitudinal direction of the cable end portion 64B, and the handle portion 64F projects outward from the cable end portion 64B. The handle portion 64F is configured as a handle for work when the emergency cable 64 is arranged in the case 12.

(About action and effect)
Next, the operation and effect of the present embodiment will be described while explaining the opening / closing operation of the fuel lid 70 by the lid opening / closing device 10 and the operation of the lid opening / closing device 10 in an emergency.

(About the transition between the locked posture and the unlocked posture of the push rod 20 in the lid switchgear 10)
The state shown in FIG. 13B is the locked posture of the push rod 20 in the lid opening / closing device 10. In this posture, the tip of the push rod 20 is inserted into the locking hole 72A of the fuel lid 70, and the locking portion 20A of the push rod 20 is engaged with the peripheral edge of the locking hole 72A. As a result, the fuel lid 70 is locked in a state where the fuel filler port of the vehicle is closed. In this state, as shown in FIG. 15B, the regulation protrusion 20D of the push rod 20 is arranged in the blocking portion 42G1 of the blocking groove 42G in the holder 42. Therefore, the push rod 20 is prevented from moving to one side and the other side in the axial direction, and the pushing operation and the pulling operation with respect to the fuel lid 70 are restricted. That is, the fuel lid 70 cannot be opened.

In this state, when the lock state of the lock device that locks the side door of the vehicle is released, the lid opening / closing device 10 is activated, and the push rod 20 shifts from the locked posture to the unlocked posture. Specifically, the motor 32 is driven by the control unit 80, and the rotor 34 rotates on one side in the circumferential direction (the side in the direction of arrow A in FIG. 13B). At this time, since the push rod 20 is connected to the rotor 34 in a relative non-rotatable manner, the push rod 20 rotates integrally with the rotor 34 to one side in the circumferential direction and transitions from the locked posture to the unlocked posture (FIG. FIG. 13 (A)). As a result, the engagement state between the locking portion 20A of the push rod 20 and the peripheral edge portion of the locking hole 72A of the fuel lid 70 is released. As a result, the fuel lid 70 is allowed to move relative to the push rod 20 in the protruding direction, and the push rod 20 is allowed to move in the axial direction.

On the other hand, when the lock device at the side door of the vehicle is in the locked state while the push rod 20 is in the unlocked posture, the lid opening / closing device 10 is activated and the push rod 20 is changed from the unlocked posture to the locked posture. do. Specifically, the motor 32 is driven by the control unit 80, and the rotor 34 rotates on the other side in the circumferential direction (the side in the direction of arrow B in FIG. 13A). As a result, the push rod 20 rotates integrally with the rotor 34 to the other side in the circumferential direction, and transitions from the unlocked posture to the locked posture. Therefore, the locking portion 20A of the push rod 20 and the peripheral edge portion of the locking hole 72A of the fuel lid 70 are engaged with each other. As a result, the fuel lid 70 is locked with the fuel filler port of the vehicle closed. Further, at this time, as described above, the regulation protrusion 20D of the push rod 20 is arranged in the blocking portion 42G1 of the blocking groove 42G in the holder 42, and the movement of the push rod 20 in the axial direction is restricted. This also limits the pushing operation on the fuel lid 70.

When the push rod 20 transitions between the locked posture and the unlocked posture, the connecting projection 34E of the rotor 34 moves in the operating groove 14F. Here, as shown in FIG. 11, in the locked posture of the push rod 20, the cable protrusion 64E of the emergency cable 64 is on the other side of the rotor 34 in the circumferential direction with respect to the connecting protrusion 34E of the rotor 34 (arrow B in FIG. 11). It is located on the directional side). Therefore, when the push rod 20 transitions between the locked posture and the unlocked posture, the rotor 34 rotates without the connecting protrusion 34E coming into contact with the cable protrusion 64E. Therefore, the push rod 20 transitions between the locked posture and the unlocked posture without hindering the rotation of the rotor 34 by the cable protrusion 64E of the emergency cable 64.

(About the operation of the push rod 20 from the pushing position to the protruding position)
As shown in FIG. 15A, in the unlocked posture of the push rod 20, the regulation protrusion 20D of the push rod 20 is one end of the blocking groove 42G of the holder 42 (that is, the intermediate portion of the insertion groove 42H of the holder 42). ) Is placed inside. As a result, the push rod 20 is allowed to move in the axial direction. Further, in this state, the guide groove 34A of the rotor 34 is arranged at a position corresponding to the cam groove 42D of the holder 42 when viewed from the axial direction of the rotor 34.

In this state, when the fuel lid 70 is pushed inward in the vehicle width direction, the push rod 20 is pushed in the pushing direction via the fuel lid 70. As a result, the push-push mechanism 40 operates, the push rod 20 is arranged at the protruding position from the pushing position, and the fuel lid 70 is in a state of opening the fuel filler port.

Hereinafter, the operation of the push-push mechanism 40 will be described with reference to FIG. In FIG. 16, the holder-side cam surface 42F and the slider-side cam surface 44C of the push-push mechanism 40 are shown as a developed view of the holder 42 (slider 44) as viewed from the radial outside. Further, in FIG. 16, the arrow a is shown as the pushing direction, the arrow c is shown as the protruding direction, and the arrow b is shown as one side of the holder 42 (slider 44) in the circumferential direction.

As shown in FIG. 16A, in the unlocked posture of the push rod 20, the slider 46A of the cam follower 46 in the push push mechanism 40 has the first inclined cam surface 42F1 and the first inclined cam surface 42F on the holder side cam surface 42F of the holder 42. It is in contact with the holding cam surface 42F3. Therefore, the movement of the cam follower 46 on one side in the protruding direction and the circumferential direction is restricted by the holder 42. Therefore, the push rod 20, the slider 44, and the cam follower 46 are maintained in the push-in position.

In this state, when the push rod 20 is pushed in the pushing direction against the urging force of the spring 50, the regulating protrusion 20D of the push rod 20 is inserted into the pushing allowance portion 42H1 in the insertion groove 42H of the holder 42.

At this time, the slider 44 is displaced relative to the holder 42 in the pushing direction together with the push rod 20. As a result, the sliding surface 46A1 of the cam follower 46 is pressed by the slider side cam surface 44C (second inclined surface 44C2) of the slider 44, and is relatively displaced in the pushing direction. That is, the state in which the sliding surface 46A1 of the cam follower 46 is in contact with the holder-side cam surface 42F (first inclined cam surface 42F1) of the holder 42 is released. In this state, the state in which the slider 46A of the cam follower 46 is in contact with the holding cam surface 42F3 of the holder 42 is maintained.

Here, the slider side cam surface 44C (second inclined surface 44C2) of the slider 44 and the sliding surface 46A1 of the cam follower 46 are inclined in the projecting direction toward one side in the circumferential direction when viewed from the radial direction of the slider 44. There is. Therefore, the slider side cam surface 44C (second inclined surface 44C2) of the slider 44 presses the sliding surface 46A1 of the cam follower 46 in the pushing direction, so that a rotational force from the slider 44 to the cam follower 46 in the circumferential direction is applied to one side. It works. However, as described above, since the state in which the slider 46A of the cam follower 46 is in contact with the holding cam surface 42F3 of the holder 42 is maintained, the rotation of the cam follower 46 to one side in the circumferential direction is restricted. Then, the cam follower 46 is displaced in the pushing direction.

Then, when the regulation protrusion 20D of the push rod 20 comes into contact with the bottom of the push allowance portion 42H1, the push of the push rod 20 in the push direction is restricted. At this time, the contact state between the slider 46A of the cam follower 46 and the holding cam surface 42F3 of the holder 42 is released. As a result, the slider 46A slides on the second inclined surface 44C2 of the slider side cam surface 44C due to the rotational force acting on the cam follower 46 from the slider 44, while the cam follower 46 is on one side in the circumferential direction with respect to the slider 44. It rotates relative to (see FIG. 16B).

Then, when the pushing operation on the fuel lid 70 is completed in this state, the push rod 20, the slider 44, and the cam follower 46 are extruded in the protruding direction by the urging force of the spring 50. That is, the push rod 20, the slider 44, and the cam follower 46 are inverted and displaced in the protruding direction. At this time, the sliding surface 46A1 of the cam follower 46 comes into contact with the second inclined cam surface 42F2 of the holder 42.

Here, the second inclined cam surface 42F2 of the holder 42 and the sliding surface 46A1 of the cam follower 46 are inclined in the projecting direction toward one side in the circumferential direction when viewed from the radial direction of the slider 44. Therefore, when the sliding surface 46A1 of the cam follower 46 comes into contact with the second inclined cam surface 42F2 of the holder 42, a rotational force acts on the sliding surface 46A1 from the second inclined cam surface 42F2 in the circumferential direction. Therefore, when the cam follower 46 is further displaced in the protruding direction in this state, the cam follower 46 further rotates to one side in the circumferential direction while the sliding surface 46A1 of the cam follower 46 slides on the second inclined cam surface 42F2. Then, as shown in FIGS. 16C and 16D, when the slider 46A of the cam follower 46 reaches the cam groove 42D of the holder 42, the slider 46A moves in the cam groove 42D in the protruding direction. ..

At this time, the slider 44 and the push rod 20 are also pressed by the cam follower 46 and move in the protruding direction. As a result, the push rod 20 is moved from the pushing position to the protruding position. Specifically, the regulation protrusion 20D of the push rod 20 moves in the insertion groove 42H of the holder 42 in the protruding direction, separates from the insertion groove 42H, and is inserted into the regulation groove 34B of the rotor 34. Then, the regulation protrusion 20D comes into contact with the bottom of the regulation groove 34B of the rotor 34, so that the movement of the push rod 20 in the protrusion direction is restricted and the push rod 20 is arranged at the protrusion position. Further, at this time, the slider guide protrusion 44A of the slider 44 is arranged so as to straddle the guide groove 34A of the rotor 34 and the cam groove 42D of the holder 42, and is relative to the holder 42 of the rotor 34 (that is, the push rod 20). Rotation is restricted (see FIG. 9). As a result, the fuel lid 70 is pushed out by the push rod 20 to the outside in the vehicle width direction (outside in the vehicle width direction), and the locking portion 20A of the push rod 20 is separated from the locking hole 72A of the fuel lid 70. As a result, the fuel lid 70 is in a state where the refueling hole is opened.

(About the operation of the push rod 20 from the protruding position to the pushing position)
When the fuel lid 70 is closed while the fuel lid 70 is open, the push rod 20 is pushed from the protruding position in the pushing direction against the urging force of the spring 50. In this state, the push rod 20 is pushed in the pushing direction with the locking portion 20A of the push rod 20 inserted into the locking hole 72A of the fuel lid 70. As a result, the push-push mechanism 40 operates, and the push rod 20 is maintained at the push-in position. Hereinafter, the push-push mechanism 40 at this time will be described.

When the push rod 20 moves from the protruding position to the pushing direction, the regulating protrusion 20D of the push rod 20 separates from the regulating groove 34B of the rotor 34 and is inserted into the insertion groove 42H of the holder 42. Then, the regulation protrusion 20D is arranged in the push-allowing portion 42H1 of the insertion groove 42H.

Further, when the push rod 20 moves in the pushing direction, the slider 44 and the cam follower 46 are pressed by the push rod 20 and move in the pushing direction. Specifically, the slider guide protrusion 44A of the slider 44 and the slider 46A of the cam follower 46 move in the cam groove 42D of the holder 42 in the pushing direction. At this time, the sliding surface 46A1 of the cam follower 46 is pressed by the second inclined surface 44C2 on the slider side cam surface 44C of the slider 44, and the cam follower 46 is displaced in the pushing direction.

Then, when the regulation protrusion 20D of the push rod 20 reaches the bottom of the push allowance portion 42H1, the slider 46A of the cam follower 46 moves from the cam groove 42D of the holder 42 in the push direction as shown in FIG. 16 (E). break away. Therefore, the cam follower 46 rotates relative to the slider 44 in the circumferential direction while the slider 46A slides on the second inclined surface 44C2 of the slider side cam surface 44C of the slider 44.

Then, when the pushing operation on the fuel lid 70 is completed in this state, the push rod 20, the slider 44, and the cam follower 46 are extruded in the protruding direction by the urging force of the spring 50. That is, the push rod 20, the slider 44, and the cam follower 46 are inverted and displaced in the protruding direction. At this time, the sliding surface 46A1 of the cam follower 46 comes into contact with the first inclined cam surface 42F1 of the holder 42. Then, when the push rod 20 reaches the pushing position, as shown in FIG. 16F, the slider 44 while the sliding surface 46A1 of the cam follower 46 slides on the first inclined cam surface 42F1 of the holder 42. It further rotates to one side in the circumferential direction. At this time, the slider 46A of the cam follower 46 comes into contact with the holding cam surface 42F3 of the holder 42, and the rotation of the cam follower 46 to one side in the circumferential direction is stopped. As a result, the cam follower 46 is prevented from moving to one side in the axial direction and one side in the circumferential direction, and the push rod 20 is maintained at the pushing position.

(About the operation of the lid switchgear 10 in an emergency)
In an emergency such as when the motor 32 of the lid opening / closing device 10 breaks down while the push rod 20 is in the locked posture, or when the battery of the vehicle is insufficiently charged, the control unit 80 is used. The motor 32 is not driven. That is, in such an emergency, the fuel lid 70 cannot be opened. Therefore, in such a case, the user operates the emergency cable 64 to operate the emergency mechanism 60 to shift the push rod 20 from the locked posture to the unlocked posture. As a result, the lid opening / closing device 10 can be pushed into the push rod 20, and the fuel lid 70 can be opened even in an emergency. Hereinafter, the operation of the emergency mechanism 60 will be described.

As shown in FIG. 11, when the emergency mechanism 60 is operated, the user grips the grip portion 64D of the emergency cable 64 and pulls the emergency cable 64 to the rear side. As a result, the tip of the cable end portion 64B of the emergency cable 64 is pulled out from the cable insertion hole 14H of the housing 14 to the outside of the case 12, and the cable end portion 64B moves relative to the housing 14.

Further, the cable end portion 64B is held by the holding claw 14G of the housing 14, and is arranged along the working groove 14F. Therefore, when the cable end portion 64B moves relative to the housing 14, the cable end portion 64B is displaced along the longitudinal direction of the working groove 14F. As a result, the cable protrusion 64E of the cable end portion 64B abuts on the connecting protrusion 34E of the rotor 34 and presses the connecting protrusion 34E toward one side in the circumferential direction of the rotor 34 (the side in the direction of arrow A in FIG. 11). As a result, the rotor 34 and the push rod 20 rotate from the locked posture to one side in the circumferential direction to transition to the unlocked posture. Therefore, the push rod 20 is allowed to move in the axial direction (the push push mechanism 40 is allowed to operate). Therefore, in this state, when the user pushes the fuel lid 70, the push-push mechanism 40 operates, and the push rod 20 moves from the pushing position to the protruding position. As described above, the fuel lid 70 can be opened in an emergency.

Here, the first inclined cam surface 42F1 and the second inclined cam surface 42F2 of the holder 42 are pushed in in the radial direction of the holder 42 (inside in the vehicle width direction) in a cross-sectional view seen from the circumferential direction of the holder 42. Is tilted to. That is, on the first inclined cam surface 42F1 and the second inclined cam surface 42F2, the inner end portion 42J on the inner side in the radial direction is arranged in the pushing direction (inside in the vehicle width direction) with respect to the outer end portion 42K on the outer side in the radial direction. There is. Therefore, when the sliding surface 46A1 of the cam follower 46 comes into contact with the first inclined cam surface 42F1 (second inclined cam surface 42F2), the sliding surface 46A1 becomes the first inclined cam surface 42F1 (second inclined cam surface 42F2). Abuts on the inner end portion 42J of. As a result, the slider 46A can be satisfactorily slid on the first inclined cam surface 42F1 (second inclined cam surface 42F2), and the cam follower 46 can be satisfactorily rotated to one side in the circumferential direction. Therefore, the push-push mechanism 40 can be operated satisfactorily. This point will be described below.

That is, on the first inclined cam surface 42F1 (second inclined cam surface 42F2), the outer end portion 42K is arranged on the radial outer side of the holder 42 with respect to the inner end portion 42J. Therefore, the length of the outer end portion 42K in the circumferential direction of the holder 42 becomes longer than the length of the inner end portion 42J. Further, the axial distance of the holder 42 between the start point and the end point of the inner end portion 42J and the outer end portion 42K of the first inclined cam surface 42F1 (second inclined cam surface 42F2) as seen from the radial direction of the holder 42. (Pitch) is the same. Therefore, when the first inclined cam surface 42F1 (second inclined cam surface 42F2) is deployed, the inclination of the portion of the first inclined cam surface 42F1 (second inclined cam surface 42F2) formed by the inner end portion 42J becomes the second. It is larger than the inclination of the portion formed by the outer end portion 42K on the 1 inclined cam surface 42F1 (the second inclined cam surface 42F2). That is, to explain using a spiral structure (string winding), when the pitch is the same in the spiral structure, the length of the spiral becomes shorter and the inclination of the spiral becomes larger as the diameter dimension of the spiral becomes smaller. From this as well, the inclination of the portion of the first inclined cam surface 42F1 (second inclined cam surface 42F2) formed by the inner end portion 42J is larger than the inclination of the portion formed by the outer end portion 42K. ..

Then, as described above, when the sliding surface 46A1 of the cam follower 46 comes into contact with the first inclined cam surface 42F1 (second inclined cam surface 42F2), the sliding surface 46A1 becomes the first inclined cam surface 42F1 (second inclined). On the cam surface 42F2), it comes into contact with the inner end portion 42J having a large inclination. As a result, the slidability with respect to the slider 46A can be improved as compared with the case where the sliding surface 46A1 slides on the outer end portion 42K. Therefore, the slider 46A can be satisfactorily slid on the first inclined cam surface 42F1 (second inclined cam surface 42F2), and the cam follower 46 can be satisfactorily rotated to one side in the circumferential direction. Therefore, the push-push mechanism 40 can be operated satisfactorily.

Further, as described above, when the sliding surface 46A1 of the cam follower 46 comes into contact with the first inclined cam surface 42F1 (second inclined cam surface 42F2), the sliding surface 46A1 becomes the first inclined cam surface 42F1 (second inclined). It comes into contact with the inner end portion 42J of the cam surface 42F2). That is, the sliding surface 46A1 does not come into contact with the first inclined cam surface 42F1 (second inclined cam surface 42F2) with a surface, but with a line. Therefore, the sliding resistance when the sliding surface 46A1 slides on the first inclined cam surface 42F1 (second inclined cam surface 42F2) can be reduced. As a result, the slider 46A can be slid more satisfactorily on the first inclined cam surface 42F1 (second inclined cam surface 42F2), and the cam follower 46 can be more satisfactorily rotated to one side in the circumferential direction.

Further, in the push-push mechanism 40, the cam follower 46 is urged in the protruding direction by the spring 50, and the urging force of the spring 50 is transmitted to the push rod 20 via the cam follower 46. Therefore, for example, it is not necessary to arrange the spring 50 inside the push rod 20. As a result, the push rod 20 and the holder 42 can be made smaller in the radial direction. Therefore, the length of the holder-side cam surface 42F (first inclined cam surface 42F1, second inclined cam surface 42F2) in the circumferential direction of the holder 42 can be further shortened. As a result, the inclination of the portion of the first inclined cam surface 42F1 (second inclined cam surface 42F2) formed by the inner end portion 42J can be further increased. Therefore, the push-push mechanism 40 can be operated even better.

Further, in the push-push mechanism 40, one end of the spring 50 is locked by the slider 46A and the flange 46B of the cam follower 46, and the cam follower 46 receives the urging force of the spring 50. Further, in the push-in position, the slider 46A of the cam follower 46 engages with the holder-side cam surface 42F, and the cam follower 46 is held in the push-in position. Therefore, at the pushing position of the push rod 20, the urging force of the spring 50 does not act on the push rod 20. Then, in this state, the push rod 20 is rotated between the locked posture and the unlocked posture by the electric drive mechanism 30. Therefore, the load on the push rod 20 when the push rod 20 is rotated by the electric drive mechanism 30 can be reduced. This can contribute to the miniaturization of the motor 32 of the electric drive mechanism 30 and also to the cost reduction.

In the present embodiment, the first inclined cam surface 42F1 and the second inclined cam surface 42F2 of the holder 42 are in the vehicle width direction as they are directed inward in the radial direction of the holder 42 in a cross-sectional view seen from the circumferential direction of the holder 42. Inwardly inclined, the inner end portion 42J on the inner side in the radial direction is arranged in the pushing direction (inside in the vehicle width direction) with respect to the outer end portion 42K on the outer side in the radial direction, but the inner end portion 42J is located on the outer end portion. The configuration for arranging in the pushing direction with respect to 42K is not limited to this. For example, a cross-sectional view of the first inclined cam surface 42F1 and the second inclined cam surface 42F2 of the holder 42 as viewed from the circumferential direction of the holder 42 so that the inner end portion 42J is arranged in the pushing direction with respect to the outer end portion 42K. Then, it may be formed in a stepped shape.

10 Lid switchgear 12 Case 14 Housing 14A 1st accommodating part 14A1 Bottom wall 14B 2nd accommodating part 14C Communication groove 14E Communication hole 14F Operating groove 14G Holding claw 14H Cable insertion hole 14J Cable guide 16 Cover 16A Cable accommodating part 18 Waterproof cap 20 Push rod 20A Locking part 20B Constriction part 20C Rod guide protrusion 20C1 Inclined part 20D Regulatory protrusion 20D1 Inclined part 30 Electric drive mechanism (drive mechanism)
32 Motor 32A Motor body 32B Output shaft 32C Worm gear 34 Rotor 34A Guide groove 34B Restriction groove 34C Warm wheel part 34E Connecting protrusion 34F Contact piece 36 First stopper 38 Second stopper 40 Push push mechanism 42 Holder 42A First holder part 42B No. 2 Holder part 42C Holder inner part 42D Cam groove 42E Holder side cam part 42F Holder side cam surface (first cam surface)
42F1 1st tilted cam surface (tilted cam surface)
42F2 2nd inclined cam surface (inclined cam surface)
42F3 Holding cam surface 42G Blocking groove 42G1 Blocking part 42H Insertion groove 42H1 Pushing allowance part 42H2 Inclined part 42J Inner end part (diameter inner part of holder)
42K outer end (diameter outer part of holder)
44 Slider 44A Slider guide protrusion 44B Slider side cam portion 44C Slider side cam surface (second cam surface)
44C1 First inclined surface 44C2 Second inclined surface 46 Cam follower 46A Slider (spring receiving part)
46A1 Sliding surface 46B Flange part (spring receiving part)
48 Washer 50 Spring 60 Emergency mechanism 62 Cable arrangement mechanism part 64 Emergency cable 64A Cable body 64B Cable end part 64C Notch part 64D Grip part 64E Cable protrusion 64F Handle part 70 Fuel lid 72 Inner panel 72A Locking hole 80 Control part

Claims (2)

A push rod having one side in the axial direction as the protruding direction and the other side in the axial direction as the pushing direction can be maintained at the pushing position, and the push rod pushed in the pushing direction at the pushing position is pushed out in the protruding direction to the protruding position. It is a push-push mechanism to arrange
With the push rod
A cylindrical holder arranged on the other side in the axial direction of the push rod,
A cam follower housed in the holder, having a slider, and operating in conjunction with the push rod.
A spring that urges the cam follower in the protruding direction,
A plurality of cam grooves provided on the inner peripheral portion of the holder into which the slider is inserted so as to be relatively movable in the axial direction of the holder and relatively non-rotatable in the circumferential direction.
The cam follower is provided between the cam grooves adjacent to each other in the circumferential direction of the holder, and when the cam follower is moved away from the cam groove in the pushing direction in the protruding direction, the slider comes into contact with the cam follower in the circumferential direction. A first having a pair of inclined cam surfaces that rotate to the side and a holding cam surface that is provided between the pair of inclined cam surfaces and that holds the cam follower in the pushing position when the slider comes into contact with the sliding cam surface. Cam surface and
A second cam surface that rotates the cam follower to one side in the circumferential direction when the slider comes into contact with the cam follower when the cam follower is moved away from the cam groove in the pushing direction.
With
The radial inner portion of the holder on the inclined cam surface is located in the pushing direction with respect to the radial outer portion of the holder on the inclined cam surface, and the radial inner portion of the holder on the inclined cam surface. A push-push mechanism characterized in that the sliders come into contact with each other. A lid switchgear provided with the push-push mechanism according to claim 1.
A locking portion provided at one end in the axial direction of the push rod to lock the fuel lid, and a locking portion.
The push rod is rotatably connected to the push rod, and by rotating the push rod, the locking posture in which the locking portion locks the fuel lid and the locked state of the locking portion are released. A drive mechanism that transitions between the unlocked posture and
With
The push rod, the cam follower, and the spring are arranged coaxially.
A lid opening / closing device characterized in that the cam follower is provided with a spring receiving portion that receives one end of the spring.

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