JP2009138482A - Lock unit of opening/closing body for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock unit of an opening/closing body for a vehicle, which can enhance productivity. <P>SOLUTION: In this lock unit 1, a driving means 80 comprises transmission gears 82b and 82c, a motor 81 for rotating the transmission gears 82b and 82c in a normal direction, and a return spring 83 for urging the transmission gears 82b and 82c in a reverse direction. Stopper portions 39, which stop rotation by abutting on a housing 72 when the transmission gears are rotated in the reverse direction, are formed on the transmission gears 82b and 82c, respectively; a first regulation portion 31 for regulating a switching lever 51 so that the switching lever 51 cannot swing in an operation direction D1 from an initial position is formed in the state of making the stopper portion 39 stop the rotation by abutting on the housing 72, on the surface, facing the switching lever 51, of the transmission gears 82b and 82c; and a second regulation portion 32 for regulating the switching lever 51 so that the switching lever 51 cannot swing in a direction opposite to the operation direction D1 from the initial position is formed in the housing 72 in the state of making the stopper portion 39 stop the rotation by abutting on the housing 72. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a locking device for a vehicle opening / closing body.

  Patent Document 1 discloses a conventional locking device for a vehicle opening / closing body. This lock device is provided with a lock device main body that locks or unlocks the vehicle opening / closing body, a housing that is provided in the lock device main body and in which a storage chamber is formed, and is swingably provided in the storage chamber. A switching lever for switching the vehicle opening / closing body to the unlocked state by swinging in an operation direction in which one end of the self from the initial position is a direction for operating the locking device body, and swinging the switching lever provided in the storage chamber Drive means.

  More specifically, the driving means includes a transmission gear that meshes with a fan-shaped gear provided at the other end of the switching lever, a motor that rotationally drives the transmission gear in the forward direction, and a return spring that biases the transmission gear in the reverse direction. have. The drive means causes the switching lever to swing from the initial position in the operating direction by causing the motor to rotate the transmission gear forward, and then stops driving the motor to reversely rotate the transmission gear by the return spring. The lever is returned to the initial position.

  The conventional locking device having such a configuration can lock the vehicle opening / closing body or switch the vehicle opening / closing body to the unlocked state by automatically operating the driving means and the switching lever. It has become.

JP 2006-207192 A

  By the way, in the above conventional locking device, if the transmission gear and the fan-shaped gear are not meshed so as to have a predetermined relative positional relationship in the assembling process, the switching lever is displaced from the initial position, and the vehicle opening / closing body is moved. The operation to switch to the unlocked state cannot be performed normally. For this reason, the operator works carefully while visually checking or uses a separately prepared engagement jig so that the transmission gear and the fan-shaped gear have a predetermined relative positional relationship. It will take time and effort. As a result, it is difficult to improve productivity with the conventional locking device.

  The present invention has been made in view of the above-described conventional situation, and an object to be solved is to provide a locking device for a vehicle opening / closing body capable of improving productivity.

The vehicle opening / closing body locking device according to the present invention includes a locking device body that locks or unlocks the vehicle opening / closing body,
A housing that is provided alongside the locking device body and in which a storage chamber is formed;
A switching lever that is swingably provided in the storage chamber and swings in an operation direction in which one end of the self from the initial position is a direction to operate the lock device main body, and switches the vehicle opening / closing body to an unlocked state;
A locking device for a vehicle opening / closing body provided in the storage chamber and provided with a driving means for swinging the switching lever;
The driving means includes a transmission gear that meshes with a fan-shaped gear provided at the other end of the switching lever, a motor that rotationally drives the transmission gear in a forward direction, and a return spring that biases the transmission gear in a reverse direction. And the motor rotates the transmission gear in the forward direction to swing the switching lever from the initial position in the operation direction, and then stops driving the motor, and the return spring causes the transmission gear to Is reversely rotated to return the switching lever to the initial position,
The transmission gear is formed with a stopper portion that stops against the housing when it is urged by the return spring and rotates in the reverse direction.
A surface of the transmission gear that faces the switching lever is configured to restrict the switching lever so that the switching lever does not swing in the operation direction from the initial position in a state where the stopper portion is stopped against the housing. 1 regulation part is formed,
The housing includes a second restricting portion that restricts the switching lever so that the switching lever does not swing in the direction opposite to the operation direction from the initial position in a state where the stopper portion is stopped against the housing. It is characterized by being.

  In the vehicle opening / closing body locking device of the present invention having such a configuration, in the assembling step, the operation of meshing the transmission gear and the fan-shaped gear is performed as follows.

  First, the transmission gear is disposed in the housing together with the return spring. At this time, since the transmission gear is urged in the reverse direction by the return spring, the stopper portion stops against the housing. For this reason, the transmission gear arranged in the housing takes a fixed posture with respect to the housing. As a result, the position of the first restricting portion relative to the housing is uniquely determined, and the relative positional relationship between the first restricting portion and the second restricting portion is also uniquely determined.

  Next, the switching lever is disposed in the housing, and the transmission gear having a fixed posture and the sector gear are engaged with each other. At this time, the switching lever is restricted from being swung in the operation direction from the initial position by the first restricting portion, and is not swung in the direction opposite to the operation direction from the initial position by the second restricting portion. Be regulated. For this reason, the transmission gear and the fan-shaped gear are always meshed with each other in a predetermined relative positional relationship, and the switching lever is not displaced from the initial position. For this reason, in the locking device of the present invention, when engaging the transmission gear and the fan-shaped gear in the assembling process, the operator carefully works while visually checking or uses a separately prepared engagement jig. There is no need to do.

  Therefore, the locking device of the present invention can improve productivity.

  Since the first restricting portion rotates integrally with the transmission gear and moves away from the switching lever, the first restricting portion does not restrict the swinging of the switching lever unless the switching lever is in the initial position.

  The locked state includes a state in which the vehicle opening / closing body is completely closed and locked (full latched state), and a state in which the vehicle opening / closing body is not completely closed but is locked (half latched state). It is. The unlocked state includes a state in which the lock is released but the vehicle opening / closing body is completely closed, and a state in which the lock is released and the vehicle opening / closing body is open to some extent.

  As long as the 1st, 2nd control part can show | play the effect of this invention, what kind of thing may be sufficient as it. For example, the first restricting portion may be a convex portion or a step portion provided so as to come into contact with the side surface facing the operation direction of the switching lever at the initial position. Further, the second restricting portion may be a convex portion or a step portion provided so as to abut on a side surface facing in a direction opposite to the operation direction of the switching lever at the initial position.

  In the vehicle opening / closing body locking device of the present invention, the switching lever is configured to interfere with at least one of the first restricting portion and the second restricting portion when meshed with the transmission gear in the reverse state. Is preferred. In this case, even if the switching lever is erroneously assembled in the reverse state, it cannot be assembled by interfering with at least one of the first restricting portion and the second restricting portion. For this reason, since this locking device can prevent the trouble that the switching lever is disposed in the reverse state, the productivity can be further improved.

  In the vehicle opening / closing body locking device according to the present invention, the locking device main body is provided with an attachment member formed with an entrance into which the striker enters, and is swingably provided in the attachment member, and locks the striker within the entrance. The vehicle opening / closing body is locked and the striker is unlocked in the entrance, and the vehicle opening / closing body is unlocked, and the mounting member is swingably provided. It has a pole that can be fixed or opened, and the switching lever swings, and one end of the switching lever comes into contact with the pole to release the swing of the fork.

  In the locking device of the present invention having such a specific configuration, the effects of the present invention can be surely enjoyed.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. In addition, as shown in FIG. 1, the front-rear direction, the left-right direction, and the up-down direction are defined with the tailgate 9 side as the rear side. That is, the front side of the vehicle that is the opposite side of the tailgate 9 is defined as the front side. Further, the left side in the state facing the front of the vehicle (the back side in FIG. 1) is defined as the left side, and the right side in the state facing the front of the vehicle (the front side in FIG. 1) is defined as the right side. The front-rear direction, the left-right direction, and the up-down direction shown in FIGS. 2 and 3 all correspond to the respective directions in FIG.

  As shown in FIG. 1, a vehicle opening / closing body locking device 1 (hereinafter simply referred to as “locking device 1”) according to an embodiment is applied to an automobile. The locking device 1 is disposed on the vehicle inner side below a tailgate 9 that is a specific mode of a vehicle opening / closing body. Then, as will be described later, the locking device 1 can open the locked state or the tailgate 9 that holds the tailgate 9 closed by the fork 11 engaging or releasing the striker 79. The unlocked state is assumed. Hereinafter, each component of the locking device 1 will be described in detail.

  As shown in FIGS. 1 and 2, the locking device 1 includes a locking device main body 70, a housing 72, a switching lever 51, and driving means 80.

  The lock device main body 70 has an attachment member 73 formed by bending a steel plate. The attachment member 73 is formed with a pair of attachment portions 73b extending substantially horizontally in the left-right direction on the upper end side, and a first storage chamber 73a recessed downward. As shown in FIG. 1, the attachment portion 73 b is for fastening and fixing to the lower end surface of the tailgate 9. As shown in FIGS. 1 and 2, a fork 11 and a pole 12 described later are stored in the first storage chamber 73a. Further, as shown in FIG. 2, the first storage chamber 73a is formed with an entrance 78 that is deeply cut out in a groove shape from the center of the lower end edge upward. A striker 79 relatively enters the entrance 78 when the locking device 1 moves as the tailgate 9 opens and closes.

  The housing 72 is an injection molded product of a thermoplastic resin, and has a substantially box shape having an opening 72b and having a second storage chamber 72a formed therein. The housing 72 is provided on the rear end side of the upper surface of the mounting member 73 with the opening 72b facing the vehicle interior (front). A switching lever 51 and a driving means 80, which will be described later, are accommodated in the second storage chamber 72a. A resin lid 71 is mounted and fixed to the housing 72 so as to close the opening 72b from the vehicle inner side (front) on the rear end side of the upper surface of the mounting member 73.

  As shown in FIG. 2, a fork 11 and a pole 12 are provided in the first storage chamber 73a so as to sandwich the entrance 78 from the left and right.

  The fork 11 is disposed on the left side of the entrance 78 (left side when facing the front of the vehicle as shown in FIG. 2), and is erected from the bottom of the mounting member 73 into the first storage chamber 73a. The pivot shaft 14a is pivotally supported by the pivot shaft 14a. The fork 11 is biased by a coil spring (not shown) so as to swing counterclockwise around the swing shaft 14a. The “clockwise direction” and “counterclockwise direction” in this embodiment are based on the state facing the cross-sectional view of FIG.

  A portion of the fork 11 located on the entrance 78 side is branched into an upper convex portion 11a and a lower convex portion 11b. The striker 79 that has entered the entrance 78 is accommodated in the recess 11c formed between the upper protrusion 11a and the lower protrusion 11b. The state shown in FIG. 2 is a locked state in which the tailgate 9 is held closed by the fork 11 locking the striker 79 at the bottom of the entrance 78. A latch surface 19a that can be in contact with a stopper portion 12a, which will be described later, is formed on the tip side facing the pole 12 of the upper convex portion 11a. The outer peripheral edge of the fork 11 is formed in an arc shape in the clockwise direction from the tip of the upper convex portion 11a.

  The pole 12 is disposed on the right side of the entrance 78 (the right side when facing the front of the vehicle as shown in FIG. 2), and is erected from the bottom of the mounting member 73 into the first storage chamber 73a. The pivot shaft 14b is pivotally supported by the pivot shaft 14b. The pole 12 is biased by a coil spring (not shown) so as to swing clockwise around the swing shaft 14b.

  A portion of the pole 12 located on the side of the entrance 78 is formed so as to protrude toward the upper convex portion 11a of the fork 11, and its tip side is a stopper portion 12a. The stopper portion 12a is fixed so as not to swing the fork 11 counterclockwise by coming into contact with the latch surface 19a of the upper convex portion 11a when the fork 11 is engaged with the striker 79 at the bottom of the entrance 78. Thus, the tailgate 9 is locked.

  A portion of the pole 12 positioned above the swinging shaft 14b is formed so as to protrude toward the lower surface of the housing 72 and the lid 71 while branching off from the stopper portion 12a, and the tip side thereof is connected to the contacted portion 12b. Has been. Although the details will be described later, the contacted portion 12b is pushed and displaced counterclockwise when the contact portion 51b which is one end of the switching lever 51 contacts.

  As shown in FIG. 3, when the abutted portion 12b is displaced counterclockwise, the pole 12 swings counterclockwise around the swing shaft 14b while resisting the biasing force of the coil spring. It has become. At this time, since the stopper portion 12a is separated from the latch surface 19a of the fork 11, the pole 12 opens the fork 11. For this reason, the fork 11 is swung counterclockwise around the rocking shaft 14 a by the biasing force of the coil spring, and the striker 79 is displaced in a direction to leave the entrance 78. As a result, the fork 11 is switched to a state in which the striker 79 is unlocked in the entrance 78, and the tailgate 9 is unlocked.

  On the other hand, when the striker 79 enters the entrance 78, the fork 11 and the pole 12 operate in the reverse manner to the above-described operations. As shown in FIG. 2, when the striker 79 enters the bottom of the entrance 78, the fork 11 swings to its original state, and the stopper portion 12a comes into contact with the latch surface 19a to engage the striker 79. Return to the stopped state. As a result, the tailgate 9 is locked.

  The switching lever 51 has an elongated plate shape in which a fan-shaped gear 82d is formed on the upper side, a shaft hole 51a is formed in the center, and a contact portion 51b is formed on the lower side by injection molding of thermoplastic resin.

  The shaft hole 51a is inserted through a swing shaft 72c that protrudes from the inside of the housing 72 toward the front (front side in FIG. 2). Therefore, the switching lever 51 can swing around the swing shaft 72c. FIG. 2 shows a state where the switching lever 51 is in the initial position. FIG. 3 shows a state where the switching lever 51 is at the maximum swing position.

  As shown in FIG. 2, the contact part 51b protrudes below the contact part opening 72d formed on the lower surface side of the housing 72 and the lid 71, and extends to the left side of the contacted part 12b. Yes.

  A small-diameter gear 82c and a worm wheel 82b are disposed above the sector gear 82d, that is, on the upper right side of the second storage chamber 72a. The small-diameter gear 82c located at the front and the worm wheel 82b located at the rear (back side in FIG. 2) are coaxial, and are integrally formed by injection molding of a thermoplastic resin or cutting of a metal material. The small-diameter gear 82c and the worm wheel 82b are rotatably supported by a rotating shaft 75 that protrudes forward from the inside of the housing 72.

  The small diameter gear 82c meshes with the sector gear 82d. On the other hand, the worm wheel 82b meshes with a worm gear 82a disposed below. The worm gear 82a is fixed to the rotation shaft of the motor 81 disposed on the upper left side of the second storage chamber 72a so as to be integrally rotatable. The small-diameter gear 82 c and the worm wheel 82 b correspond to a transmission gear that meshes with a fan-shaped gear 82 d provided above the switching lever 51.

  A return spring 83 is disposed on the rear surface side of the worm wheel 82b. One end of the return spring 83 is locked to a housing side locking portion 83a that protrudes from the housing 72 toward the rear surface of the worm wheel 82b. On the other hand, the other end of the return spring 83 is locked to a worm wheel side locking portion 83b protruding from the rear surface side of the worm wheel 82b toward the housing 72. For this reason, the worm wheel 82b is urged to rotate clockwise by the return spring 83.

  A gear mechanism 82 is configured by including a sector gear 82d, a small-diameter gear 82c, a worm wheel 82b, and a worm gear 82a. In addition, the drive unit 80 is configured to include a motor 81, a gear mechanism 82, and a return spring 83. Then, as will be described later, the driving means 80 causes the switching lever 51 to reciprocate between the initial position shown in FIG. 2 and the maximum swing position shown in FIG. 3 by the motor 81, the gear mechanism 82, and the return spring 83. .

  In the locking device 1 of the embodiment having such a configuration, when the user tries to open the tailgate 9 by operating the opening / closing handle 9a in the initial state shown in FIGS. 1 and 2, the following operation is performed. The switching lever 51 and the driving means 80 automatically operate the lock device main body 70 to bring the tailgate 9 into the unlocked state.

  First, when the user pulls the opening / closing handle 9a to open the tailgate 9, a control means (not shown) supplies electric power to the motor 81 to rotate the worm gear 82a. As a result, the worm wheel 82b meshing with the worm gear 82a rotates counterclockwise, and the small diameter gear 82c also rotates counterclockwise together with the worm wheel 82b (rotation of the small diameter gear 82c and worm wheel 82b counterclockwise). Corresponds to “rotation of the transmission gear in the positive direction”). As shown in FIG. 3, the switching lever 51 swings clockwise around the swing shaft 72c via the fan-shaped gear 82d that meshes with the small-diameter gear 82c, and passes through the contact portion 51b and the contact portion 12b. Acting on the pole 12. Here, the direction in which the switching lever 51 swings from the initial position to the maximum swing position is the “operation direction D1”, which is the direction in which the lock device main body 70 is operated.

  As a result, as described above, the pole 12 opens the fork 11, and the fork 11 swings counterclockwise around the swing shaft 14a. As a result, the fork 11 is switched to a state in which the striker 79 is unlocked in the entrance 78, and the tailgate 9 is unlocked.

  Then, when the user returns the opening / closing handle 9a, the control means stops supplying power to the motor 81. Then, the worm wheel 82b and the small diameter gear 82c are urged by the return spring 83 and rotate in the clockwise direction (the rotation of the small diameter gear 82c and the worm wheel 82b in the clockwise direction is “the reverse rotation of the transmission gear”). Equivalent to.) For this reason, the switching lever 51 in which the sector gear 82d meshes with the small-diameter gear 82c swings in the reverse direction from the maximum swing position shown in FIG. 3 and returns to the initial position. For this reason, the pole 12 also swings in the reverse direction, and the stopper portion 12a is urged against the outer peripheral surface of the fork 11, so that the fork 11 can be fixed at any time. Here, the direction in which the switching lever 51 swings from the maximum swing position to the initial position is the “opposite direction to the operation direction D1”.

  Thereafter, if the user attempts to close the tailgate 9, the striker 79 enters the advance entrance 78 and swings the fork 11 in the reverse direction, so that the fork 11 and the pole 12 operate in the reverse manner. . When the striker 79 enters the bottom of the entrance 78, as shown in FIG. 2, the fork 11 locks the striker 79 and the tailgate 9 is locked.

  In the locking device 1 that operates in this manner, if the small-diameter gear 82c and the fan-shaped gear 82d are engaged in a positional relationship different from a predetermined relative positional relationship in the assembling process, the switching lever 51 is moved from the initial position. It will shift. If it does so, the rocking | fluctuation range of the switching lever 51 will also shift | deviate and it will become impossible to rock | fluctuate the pole 11 to a predetermined angle. As a result, the locking device 1 cannot normally perform the operation of switching the tailgate 9 to the unlocked state. For this reason, in this locking device 1, the small-diameter gear 82c and the fan-shaped gear 82d are always engaged in a predetermined relative positional relationship by the stopper portion 39, the first restricting portion 31, and the second restricting portion 32 described in detail below. It is possible to match. Hereinafter, the configuration of the stopper portion 39, the first restricting portion 31, and the second restricting portion 32 will be described with reference to FIGS. 4 to 9, and the motor 72, the small-diameter gear 82c, and the worm wheel 82b are installed in the housing 72. The process of assembling the return spring 83 and the switching lever 51 sequentially will be described.

  As shown in FIGS. 4 and 5, the bottom surface of the second storage chamber 72 a formed in the housing 72 is switched to the rotating shaft 75 that rotatably supports the small-diameter gear 82 c and the worm wheel 82 b as described above. A swinging shaft 72 c that pivotally supports the lever 51 and a housing side locking portion 82 a that locks one end of the return spring 83 are projected. In addition, a stopper abutting portion 38 having a semicircular cross section is integrally provided on the bottom surface of the second storage chamber 72a so as to be spaced apart from the rotating shaft 75 at a predetermined interval. The stopper abutting portion 38 is disposed at a position where a stopper portion 39 described later can be stopped. Further, a second restricting portion 32 made of a convex portion having an L-shaped cross section is integrally provided on the bottom surface of the second storage chamber 72a at a predetermined interval with respect to the rotating shaft 75 and the swing shaft 72c. It has been. As shown in FIG. 2, when the switching lever 51 is in the initial position, the second restricting portion 32 is disposed at a position that contacts the side surface 51f that faces in the direction opposite to the operation direction D1 of the switching lever 51. The side surface 51f is formed with a notch 51g that escapes from the second restricting portion 32 so as not to interfere with the end portion 32a protruding in the operation direction D1.

  As shown in FIGS. 4 and 5, the first regulating portion 31 formed of a substantially prismatic convex portion is integrally formed on the surface of the worm wheel 82b on the small diameter gear 82c side, away from the small diameter gear 82c in the radial direction. Is provided. The relative positional relationship between the first restricting portion 31, the second restricting portion 32, and a stopper portion 39 described later will be described later.

  As shown in FIG. 6, an annular recess 83c is formed on the surface of the worm wheel 82b opposite to the small diameter gear 82c. On the bottom surface of the annular recess 83c, the above-described worm wheel side locking portion 83b is integrally projected so as to face away from the small diameter gear 82c. On the outer cylindrical surface of the annular recess 83c, a stopper portion 39 protruding inward in the radial direction is integrally projected. The distance between the stopper portion 39 and the shaft center of the worm wheel 82b is equal to the distance between the stopper contact portion 38 and the rotating shaft 75 described above.

  Next, the assembly process will be described. First, as shown in FIG. 7, the motor 81 to which the worm gear 82 a is attached is fitted into the housing 72 between the motor fixing ribs 72 e and 72 f that are projected in parallel with each other and fixed.

  Next, as shown in FIG. 8, the small diameter gear 82 c and the worm wheel 82 b are assembled to the housing 72 together with the return spring 83. Specifically, first, the return spring 83 is inserted into the annular recess 83c, and the other end of the return spring 83 is locked to the worm wheel side locking portion 83b. Next, the rotary shaft 75 is inserted through the small diameter gear 82c and the worm wheel 82b. At this time, the return spring 83 holds the small-diameter gear 82c and the worm wheel 82b, twists in the forward direction around the rotation shaft 75 (counterclockwise in the state facing FIG. 8), and the return spring 83 stores the urging force. One end of 83 is locked to the housing side locking portion 83a. Then, the small diameter gear 82c and the worm wheel 82b are completely inserted through the rotating shaft 75 so that the worm wheel 82b is engaged with the worm gear 82a.

  Thereafter, when the hand holding the small-diameter gear 82c and the worm wheel 82b is released, the small-diameter gear 82c and the worm wheel 82b are rotated in the reverse direction (clockwise in the state facing FIG. 8) by the urging force of the return spring 83. The stopper part 39 stops against the stopper contact part 38. For this reason, the small-diameter gear 82 c and the worm wheel 82 b assembled to the housing 72 take a fixed posture with respect to the housing 72. As a result, the position of the first restricting portion 31 with respect to the housing 72 is uniquely determined. Further, the relative positional relationship between the first restricting portion 31 and the second restricting portion 32 is also uniquely determined. Here, the position of the first restricting portion 31 is set so that the small-diameter gear 82c and the fan-shaped gear 82d can always mesh with each other in a predetermined relative positional relationship.

  That is, the position of the first restricting portion 31 is such that the side surface 51f is brought into contact with the second contact portion 32 as shown in FIG. 9 in a state where the stopper portion 39 is stopped against the stopper contact portion 38. When the switching lever 51 is assembled to the housing 72, the first restricting portion 31 is set to abut on the side surface 51e facing the operation direction D1 of the switching lever 51. For this reason, when the shaft hole 51a of the switching lever 51 is inserted through the swing shaft 72c, the switching lever 51 assumes a certain posture and is controlled by the first restricting portion 31 and the second restricting portion 32, and the small diameter gear 82c. The fan gear 82d is meshed with a predetermined relative positional relationship.

  Thus, the housing 72 after the assembly process is assembled to the lock device main body 70, and the lid 71 is mounted and fixed.

  Thus, in this locking device 1, when the switching lever 51 is assembled to the housing 72, the first restricting portion 31 contacts the side surface 51e, so that the switching lever 51 is restricted from swinging in the operation direction D1 from the initial position. Is done. At the same time, since the second restricting portion 32 comes into contact with the side surface 51f, the switching lever 51 is restricted from swinging in the direction opposite to the operation direction D1 from the initial position. For this reason, the small-diameter gear 82c and the fan-shaped gear 82d are always meshed with each other in a predetermined relative positional relationship, and the switching lever 51 is not displaced from the initial position. For this reason, in the locking device 1, when the small-diameter gear 82c and the fan-shaped gear 82d are engaged with each other in the assembling process, an operator carefully works while visually confirming or uses a separately prepared engagement jig. There is no need to use it.

  Therefore, this locking device 1 can improve productivity.

  As shown in FIG. 3, the first restricting portion 31 rotates integrally with the small diameter gear 82c and the worm wheel 82b and moves away from the side surface 51e. For this reason, the 1st control part 31 does not control the rocking | fluctuation of the switching lever 51 except the case where the switching lever 51 exists in an initial position.

  Further, in the locking device 1, as shown in FIG. 9, when the switching lever 51 is meshed with the small diameter gear 82c in a state where the front and back sides are correct, the side surface 51f formed with the notch 51g is the second restricting portion 32. It does not interfere with the protrusion 32a. On the other hand, when the switching lever 51 is meshed with the small-diameter gear 82c in the reverse state, the side surface 51e in which the notch portion is not formed interferes with the protrusion 32a of the second restricting portion 32 and cannot be assembled. For this reason, in this locking device 1, since the malfunction which arrange | positions the switching lever 51 accidentally in the state reverse to front and back can be prevented, productivity can be improved further.

  While the present invention has been described with reference to the embodiments, it is needless to say that the present invention is not limited to the above-described embodiments and can be appropriately modified and applied without departing from the spirit thereof.

  The present invention is applicable to a locking device for a vehicle opening / closing body.

It is a side view of the locking device of the opening-and-closing body for vehicles of an example. FIG. 2 is a cross-sectional view showing the II-II cross section of FIG. FIG. 2 is a cross-sectional view showing the II-II cross section of FIG. FIG. 5 is a perspective view showing a housing, a motor, a small-diameter gear and a worm wheel, a return spring, and a switching lever according to the vehicle opening / closing body locking device of the embodiment. FIG. 5 is a perspective view showing a housing, a motor, a small-diameter gear and a worm wheel, a return spring, and a switching lever according to the vehicle opening / closing body locking device of the embodiment. 1 is a perspective view of a worm wheel according to a locking device for a vehicle opening / closing body of an embodiment. It is a front view which shows the state which concerns on the locking device of the opening / closing body for vehicles of an Example, and attached the motor to the housing. It is a front view which shows the state which concerns on the locking device of the opening / closing body for vehicles of an Example, and assembled | attached the motor, the small diameter gear, the worm wheel, and the return spring to the housing. It is a front view which shows the state which concerns on the locking device of the opening / closing body for vehicles of an Example, and assembled | attached the motor, the small diameter gear and the worm wheel, the return spring, and the switching lever to the housing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Locking device 9 ... Opening and closing body for vehicles (tail gate)
DESCRIPTION OF SYMBOLS 11 ... Fork 12 ... Pole 31 ... 1st control part 32 ... 2nd control part 39 ... Stopper part 51 ... Switching lever 51b ... One end of switching lever 70 ... Locking device main body 72 ... Housing 72a ... Storage chamber (2nd storage chamber)
73 ... Mounting member 78 ... Entrance 79 ... Striker 80 ... Drive means 81 ... Motor 82d ... Fan gear 82b, 82c ... Transmission gear (82b ... Worm wheel, 82c ... Small diameter gear)
83 ... Return spring

Claims (3)

A lock device main body that brings the vehicle opening / closing body into a locked state or an unlocked state;
A housing that is provided alongside the locking device body and in which a storage chamber is formed;
A switching lever that is swingably provided in the storage chamber and swings in an operation direction in which one end of the self from the initial position is a direction to operate the lock device main body, and switches the vehicle opening / closing body to an unlocked state;
A locking device for a vehicle opening / closing body provided in the storage chamber and provided with a driving means for swinging the switching lever;
The driving means includes a transmission gear that meshes with a fan-shaped gear provided at the other end of the switching lever, a motor that rotationally drives the transmission gear in a forward direction, and a return spring that biases the transmission gear in a reverse direction. And the motor rotates the transmission gear in the forward direction to swing the switching lever from the initial position in the operation direction, and then stops driving the motor, and the return spring causes the transmission gear to Is reversely rotated to return the switching lever to the initial position,
The transmission gear is formed with a stopper portion that stops against the housing when it is biased by the return spring and rotates in the reverse direction.
A surface of the transmission gear that faces the switching lever is configured to restrict the switching lever so that the switching lever does not swing in the operation direction from the initial position in a state where the stopper portion is stopped against the housing. 1 regulation part is formed,
The housing includes a second restricting portion that restricts the switching lever so that the switching lever does not swing in the direction opposite to the operation direction from the initial position in a state where the stopper portion is stopped against the housing. A vehicular opening / closing body locking device.   2. The vehicle opening / closing body according to claim 1, wherein the switching lever is configured to interfere with at least one of the first restricting portion and the second restricting portion when meshed with the transmission gear in an inverted state. Locking device. The lock device main body has an attachment member formed with an entrance into which a striker enters,
The mounting member is swingably provided, and the vehicle opening / closing body is brought into the locked state by locking the striker in the entrance, and the vehicle is released by releasing the striker in the entrance. A fork that opens and closes the opening / closing body for use,
The mounting member is swingably provided, and has a pole that can fix or open the swing of the fork,
The locking device for a vehicle opening / closing body according to claim 1 or 2, wherein the switching lever swings and one end of the switching lever comes into contact with the pole to release the swing of the fork.

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