JP2018021318A - Vehicle lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle lock device capable of reducing a number of components and a cost, while suppressing increase in weight.SOLUTION: A vehicle lock device 100 includes: a base plate 1; a latch 2 that restricts or releases a striker; a coil spring 4 generating elastic force on the latch 2 in a direction to release the striker; and a lock lever 3 engaged with the latch 2 for maintaining a restricted state of the striker by the latch 2. The lock lever 3 includes: a plate-form base part 30 disposed on a second surface 10B on a side opposite a first surface 10A on which the latch 2 is disposed, the base part having a rotation axis; and a latch engaging part 31 extending in the rotation axis direction toward the first surface 10A side from the base part 30, piercing through a through-hole 10b of the base plate 1, and engaged with the latch 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle locking device.

  2. Description of the Related Art Conventionally, there has been known a vehicle locking device that can lock and unlock an opening / closing body attached to an opening of a vehicle so as to be opened and closed (see, for example, Patent Document 1).

  The lock device for a vehicle (hood latch) described in Patent Document 1 includes an engagement groove into which a striker can enter, and a lock position where separation from the engagement groove of the striker is restricted, and an engagement groove of the striker. A latch that can rotate between an unlocked position where it can be released, a lock lever (pole) that restricts rotation of the latch toward the unlocked position and holds the latch in the locked position, and a latch and a lock lever And a reinforcing plate for preventing the engagement of the abruptly being released.

JP 2004-324078 A

  In order to reduce the number of parts and reduce the weight of this type of vehicle locking device, it has been studied to eliminate the reinforcing plate, which is a component not involved in the operation of the device. However, when the reinforcing plate is abolished, it is necessary to increase the thickness of the member in order to suppress the deformation of the lock lever or latch to ensure the strength, which causes an increase in the weight of the device. There is.

  Therefore, an object of the present invention is to provide a vehicle locking device that can reduce the number of parts while suppressing an increase in weight.

  In order to solve the above-mentioned problem, the present invention has a base plate in which a through-hole penetrating in the plate thickness direction is formed, and an entrance groove into which a striker enters, and is rotatably supported by the base plate. A latch that displaces between a lock position in which separation from the entry groove is restricted and an unlock position in which the striker can be removed from the entry groove, and the latch is locked by engaging with the latch. A lock lever that holds in position, and the lock lever is disposed on a second surface opposite to the first surface of the base plate on which the latch is disposed, and has a plate-like base portion having a rotation shaft; A latch locking portion extending from the base portion in the direction of the rotation axis and penetrating the through hole of the base plate to lock the latch. That, to provide a vehicle for the locking device.

  According to the vehicle locking device of the present invention, it is possible to reduce the number of parts while suppressing an increase in weight.

It is a perspective view which shows the structural example of the locking device for vehicles which concerns on this Embodiment, (a) is a perspective view when it sees from the latch side, (b) is a perspective view when it sees from the lock lever side It is. It is a top view which shows the structural example of the locking device for vehicles, (a) is a front view, (b) is a rear view. It is a top view which shows the structural example of a lock lever, (a) is a left view, (b) is a front view, (c) is a right view. It is the perspective view which expanded the latch latching | locking part of the lock lever. It is a top view which shows the state which the latch latching | locking part and latch of the lock lever meshed. (A)-(c) It is explanatory drawing for demonstrating the operation | movement at the time of locking and unlocking of the vehicle locking device, (a) shows a locked state, (b) shows the state at the time of unlocking. , (C) shows the unlocked state. It is a side view of the locking device for vehicles shown in order to explain the force which acts on a latch and a lock lever at the time of extraction of a striker.

[Embodiment]
A vehicle locking device according to the present embodiment will be described with reference to FIGS.

  FIG. 1 is a perspective view showing a configuration example of a vehicle locking device according to the present embodiment. FIG. 2 is a front view and a rear view illustrating a configuration example of the vehicle locking device. In the present embodiment, the case where the vehicle locking device is a hood locking device that locks the hood that opens and closes the opening of the engine room of the vehicle will be described. However, the present invention is not limited to this. The present invention can also be applied as a locking device that locks an opening / closing body such as the above. 1 and 2 show the vehicle locking device when the latch is in the locked position, and the striker is not shown in FIG. 1 for convenience of explanation.

  The vehicle locking device 100 restrains the base plate 1 fixed to the vehicle body, the striker 9 fixed to the hood (not shown), or the latch 2 that opens or releases the elastic force in the direction in which the latch 2 opens the striker 9. A coil spring 4 to be generated, a lock lever 3 that is engaged with the latch 2 and holds the striker 9 of the latch 2 in a restrained state, and a torsion that generates an elastic force in a direction in which the lock lever 3 is engaged with the latch 2 And a spring 5. The striker 9 is formed by bending a round bar into a substantially U shape, and both ends thereof are fixed to the vehicle body side by welding or the like.

  The base plate 1 includes a plate-like flat plate portion 10 and first and second flange portions 11 and 12 provided at both left and right ends of the flat plate portion 10. An entrance groove 10 a into which the striker 9 can enter when the hood is closed is formed in the central portion of the flat plate portion 10. The entrance groove 10a is U-shaped when viewed from the front when viewed from the thickness direction with the upper end opened.

The flat plate portion 10 has a first surface 10A and a second surface 10B as a pair of front and back surfaces in the thickness direction, the latch 2 is disposed on the first surface 10A, and the lock lever 3 is disposed on the second surface 10B. Yes. Further, the flat plate portion 10 is formed with a through hole 10b penetrating in the plate thickness direction. Shape viewed along the thickness direction of the through hole 10b is substantially fan-shaped, and extends along the radial direction of the virtual circle around the rotation axis O ₂ of the lock lever 3. The first and second flange portions 11 and 12 are formed with insertion holes 11a and 12a penetrating in the plate thickness direction. The base plate 1 is fixed to the vehicle body by screwing bolts (not shown) inserted through the insertion holes 11a and 12a into screw holes provided on the vehicle body side.

  In addition, the base plate 1 has a holding portion 13 in which a holding groove 13 a for holding an open cable (not shown) for opening the lock lever 3 is formed. This open cable is connected to a hood opener operated at the driver's seat, for example.

The latch 2 is formed with a main body 20 rotatably supported by a first support pin 61, and a locking groove 23a that protrudes from the main body 20 in the plate thickness direction and locks one end 4a of the coil spring 4. The protrusion piece 23 is integrally provided. Latch 2 has a central axis of the first support pin 61 as a rotation axis O _1, it is rotatable in a predetermined angle range.

An engagement groove 20 a is formed in the main body portion 20 of the latch 2 so that a part of the outer edge is opened to engage with the striker 9. Engaging groove 20a is a front view seen in the direction along the rotation axis O ₁ is U-shaped. The latch 2 has first and second end portions 21 and 22 on both sides of the engagement groove 20a, and the first end portion 21 is formed as a restricting portion that restricts the detachment of the striker 9, and the second end portion The portion 22 is formed as a receiving portion that receives the striker 9 that has entered the entry groove 10 a of the base plate 1. The second end portion of the latch 2 corresponds to the “locked portion” of the present invention.

  The second end 22 of the main body 20 in the latch 2 has a receiving surface 22 a that receives the striker 9 that enters the entry groove 10 a of the base plate 1. The receiving surface 22a is disposed in a latch locking hole 310 of a latch locking portion 31 of the lock lever 3 described later.

  The latch 2 is located between a locked position where the striker 9 is prevented from being removed from the entry groove 10a and an unlock position where the striker 9 can be detached from the entry groove 10a (see FIG. 6C described later). Displace. In the locked state of the latch 2 shown in FIGS. 1 and 2, the latch 2 is held in the locked position by receiving the elastic force of the coil spring 4 and engaging the tip of the second end portion 22 with the lock lever 3. Has been.

The lock lever 3 includes a plate-like base portion 30 having a rotation axis O ₂ disposed on the second surface 10B opposite to the first surface 10A on which the latch 2 is disposed, and a latch mechanism that locks the latch 2. And a stop portion 31. The latch locking portion 31 extends from the base portion 30 in the direction of the rotation axis O ₂ and passes through the through hole 10 b of the base plate 1. That is, the latch locking portion 31 is exposed to the first surface 10A side through the through hole 10b, and locks the latch 2 at the lock position disposed on the first surface 10A. Details of the lock lever 3 will be described later.

  One end 4 a of the coil spring 4 is engaged with the protruding piece 23 of the latch 2, and the other end 4 b is engaged with a notch 14 a of the spring contact portion 14 provided on the lower end side of the base plate 1. 2 is placed in a pulled state when in the locked position. That is, the latch 2 always receives an elastic force in a direction rotating from the lock position to the unlock position (counterclockwise direction in FIG. 2A).

  Next, the configuration of the lock lever 3 according to the present embodiment will be described in detail with reference to FIGS. 3 to 5.

  FIG. 3 is a plan view showing a configuration example of the lock lever 3, wherein (a) is a left side view, (b) is a front view, and (c) is a right side view. FIG. 4 is an enlarged perspective view of the latch engaging portion 31 of the lock lever 3 when viewed from the latch 2 side when the latch 2 is in the locked position. FIG. 5 is a plan view showing a side view of the latch engaging portion 31 of the lock lever 3 shown in FIG. 3A together with the second end portion 22 of the latch 2. In FIG. 4, the latch 2 is indicated by a two-dot chain line.

  The lock lever 3 includes a base portion 30 and a latch engaging portion 31 described above, a support portion 32 that is disposed on the upper end side of the base portion 30 and supports the base portion 30 so as to be rotatable, and a spring contact that abuts against one end 5 a of the torsion spring 5. The contact portion 33 and the cable connecting portion 34 to which the tip of the open cable held by the holding portion 13 of the base plate 1 is connected are integrally provided.

The base 30 is rotatably supported by the second supporting pin 62, which is the central axis of the support pin 62 can be rotated at a predetermined angular range as the rotation axis O _2. The support portion 32 is formed with an insertion hole 32a through which the second support pin 62 is inserted. The spring contact portion 33 is formed with a concave groove 33a in which one end 5a of the torsion spring 5 is locked. The cable connecting portion 34 is formed with a connecting hole 34a for connecting the end portions of the open cable. The torsion spring 5 has one end 5 a locked in the concave groove 33 a and the other end 5 b locked in the protruding plate 15 provided on the base plate 1. The lock lever 3 constantly receives an elastic force in a direction (counterclockwise direction in FIG. 2B) in which the lock lever 3 is engaged with the latch 2 from the torsion spring 5.

Latch engaging portion 31 and the end face 30b opposite to the base plate 1 of the base portion 30 is formed to extend in the rotation axis O ₂ direction from the opposite side to the end face 30a, to lock the latch 2 in the locked position. In the present embodiment, the latch locking portion 31 has a plate shape having a predetermined thickness and has a latch locking hole 310 penetrating in the plate thickness direction. The leading end of the second end portion 22 of the latch 2 in the locked position is disposed in the latch locking hole 310.

The latch locking hole 310 has a substantially rectangular shape when viewed along the thickness direction of the latch locking portion 31. The inner surface of the latch locking holes 310, the upper surface 310a directed downwards, a lower surface 310b directed upward, first and second side surfaces 310c opposed to the rotation axis _{O 2} direction is configured in the 310 d, . The first side surface 310c is provided at a position farther from the first surface 10A of the base plate 1 than the second side surface 310d (see FIG. 5).

  Of the end surfaces in the plate thickness direction of the second end portion 22 of the latch 2, the end surface 22 b opposite to the end surface 22 c facing the first surface 10 A of the base plate 1 is the first end of the latch locking hole 310 in the latch locking portion 31. 1 side surface 310c. That is, the first side surface 310c is formed as a facing surface facing the end surface 22b opposite to the end surface 22c facing the first surface 10A in the second end portion 22 as the latched portion of the latch 2. The upper surface 310a of the latch locking hole 310 in the latch locking portion 31 is formed as a contact surface that comes into contact with the receiving surface 22a of the second end 22 in the latch 2 at the lock position.

The length in the rotation axis O ₂ direction between the first side surface 310 c and the second side surface 310 d in the latch locking hole 310 of the lock lever 3 is at least the rotation axis O ₂ of the second end 22 in the latch 2. Greater than the plate thickness in the direction. In this embodiment, as shown in FIG. 5, the distance between the rotation axis O ₂ in along the direction between the first surface 10A of the end surface 22b and the base plate 1 of the latch 2 and L _1, the latch of the lock lever 3 When the distance along the rotation axis O ₂ between the first side surface 310c of the locking hole 310 and the first surface 10A of the base plate 1 is L ₂ , the distance L ₁ is larger than the distance L ₂ (L _{1> L} 2). That is, a gap is interposed between the second end portion 22 of the latch 2 and the first and second side surfaces 310 c and 310 d of the latch locking hole 310. With this dimensional configuration, even if a large force acts on the latch 2 at the time of a vehicle collision or the like and the second end 22 of the latch 2 is deformed in the plate thickness direction, the second end 22 is not latched. Since the first side surface 310c of 310 is contacted, the engagement between the latch 2 and the lock lever 3 is prevented from being released. That is, the first side surface 310c (opposing surface) is formed as a regulating surface that regulates the release of engagement in the lock lever 3 and the latch 2.

  Next, the operation of the vehicle locking device 100 having the configuration described in FIGS. 1 to 5 will be described with reference to FIG.

  FIGS. 6A to 6C are explanatory views for explaining the operation of the locking device 100 for a vehicle when locked and unlocked, where FIG. 6A shows a locked state, and FIG. 6B shows unlocking. (C) shows the unlocked state. In addition, in FIG. 6, the top view which looked at the locking device 100 for vehicles from the 1st surface 10A of the baseplate 1 similarly to Fig.2 (a) is shown. The striker 9 is indicated by a two-dot chain line.

  In the locked state, as shown in FIG. 6A, the latch 2 is applied with an elastic force that rotates counterclockwise by the coil spring 4, but the second end 22 of the latch 2 is connected to the lock lever 3. Since the latch latching portion 31 is latched, it is held at the lock position. That is, separation of the striker 9 from the engagement groove 20a in the latch 2 is restricted.

In this locked state, as shown in FIG. 6B, for example, when the occupant operates a hood opener provided in the passenger compartment, the open cable connected to the cable connecting portion 34 of the lock lever 3 is pulled. , the lock lever 3 is rotated in a direction away from the latch 2 (counterclockwise direction in FIG. 6) around the rotation axis O ₂ against the elastic force of the torsion spring 5. Accordingly, the engagement between the second end portion 22 of the latch 2 and the latch engaging portion 31 of the lock lever 3 is released.

Then, as shown in FIG. 6 (c), the latch 2 is rotated from the locking position about an axis of rotation O ₁ by the elastic force of the coil spring 4 in the direction of the unlocked position (the counterclockwise direction in FIG. 6), The striker 9 can be detached from the engagement groove 20a of the latch 2, and the vehicle locking device 100 is unlocked. At this time, when the occupant performs an operation of opening the hood, the striker 9 can be detached from the engagement groove 20a of the latch 2 to open the hood.

  On the other hand, when locking the vehicle locking device 100, the striker 9 enters the entry groove 10 a of the base plate 1 by the operation of closing the hood of the occupant, and the striker 9 receives the receiving surface 22 a at the second end 22 of the latch 2. Press. Along with this, the latch 2 rotates against the elastic force of the coil spring 4 from the unlock position to the lock position (clockwise direction in FIG. 6), and the second end 22 of the latch 2 is the lock lever. 3 is latched to the latch latching portion 31. As a result, the striker 9 cannot be detached from the engagement groove 20a of the latch 2, and the vehicle locking device 100 is locked.

  Next, the force that acts on the latch 2 and the lock lever 3 when the vehicle locking device 100 is in a locked state during a vehicle collision or the like will be described with reference to FIGS. FIG. 7 is a right side view of the vehicle locking device 100 shown in FIG. In FIG. 7, the coil spring 4 and the torsion spring 5 are not shown for convenience of explanation.

  When the latch 2 as shown in FIG. 6 (a) is in the locked position, for example, when the vehicle locking device 100 is locked and the hood tries to move in the opening direction at the time of a vehicle collision, the striker 9 Since the latch 2 is pulled out in the direction of detachment from the entry groove 10a, the latch 2 is forced to receive a force in a direction rotating from the lock position to the unlock position (counterclockwise direction in FIG. 6).

Then, since the upper surface 310a of the latch locking hole 310 in the lock lever 3 is pressed upward from the receiving surface 22a of the second end 22 of the latch 2, the receiving surface 22a of the second end 22 and the latch locking hole 310 are pressed. The external force F acts on the latch locking portion 31 of the lock lever 3 at the contact point Q with the upper surface 310a. Here, the external force F includes a component force F ₂ of a directional component along a straight line connecting the contact point P and the contact point Q where the support portion 32 of the lock lever 3 contacts the second surface 10B of the base plate 1 and a component force F _2. It can be decomposed into a component force F ₁ of a direction component orthogonal to. That is, the lock lever 3 is acted on by the rotational moment M in the clockwise direction in FIG. 7 due to the component force F ₁ with the contact P as a fulcrum. By this rotational moment M, the base 30 of the lock lever 3 is pressed in a direction approaching the second surface 10B of the base plate 1 (arrow X direction). As described above, the present embodiment is configured such that the external force is received by the base plate 1 even when an external force that pulls out the striker 9 acts in the locked state of the vehicle locking device 100 in a vehicle collision or the like. Thereby, the engagement release of the latch 2 and the lock lever 3 can be prevented, and the pulling strength by the striker 9 is improved.

(Operation and effect of the embodiment)
According to the present embodiment described above, the following operations and effects can be obtained.

(1) The lock lever 3 is formed to extend from the base 30 in the direction of the rotation axis O ₂ , and has a latch locking portion 31 that locks the latch 2 at the lock position. By contacting the latch 2 on the upper surface 310a of the locking hole 310, the rotation of the latch 2 in the unlock position direction is restricted. Thus, for example, a sufficient engagement area (contact area) that engages with the second end 22 of the latch 2 of the lock lever 3 can be secured without increasing the thickness of the lock lever 3, so that the latch 2 and the lock lever 3 can be prevented from being released unexpectedly, and the reinforcing plate included in the lock device described in Patent Document 1 is not necessary. That is, it is possible to reduce the number of parts and the cost while suppressing an increase in weight.

(2) The latch 2 has a second end 22 as a locked portion that is locked to the latch locking portion 31 of the lock lever 3, and the latch locking portion 31 of the lock lever 3 is the second portion of the latch 2. extending from the first surface 10A of the base plate 1 to a position far to the rotation axis O ₂ direction than the end 22. As a result, a sufficient contact area between the latch engaging portion 31 of the lock lever 3 and the second end portion 22 of the latch 2 is ensured. It can be prevented that the end portion 22 is bent in a direction away from the first surface 10A of the base plate 1 and the engagement between the latch 2 and the lock lever 3 is unexpectedly released.

(3) The latch engaging portion 31 of the lock lever 3 has the first side surface 310c as a facing surface facing the end surface 22b opposite to the end surface 22c facing the first surface 10A in the second end portion 22 of the latch 2. And the first side surface 310c is formed as a regulating surface that regulates the release of the engagement between the lock lever 3 and the latch 2. Thereby, for example, even if a large force acts on the latch 2 to cause the above-described plate turning, the end surface 22b of the second end portion 22 of the latch 2 is in contact with the first side surface 310c of the latch engaging portion 31 in the lock lever 3. Therefore, the engagement between the latch 2 and the lock lever 3 can be reliably prevented.

(4) The lock lever 3 is arranged on the second surface 10B opposite to the first surface 10A on which the latch 2 of the base plate 1 is arranged, and the latch engaging portion 31 of the lock lever 3 penetrates the base plate 1 Since it extends to the first surface 10A side through the hole 10b, the layout of the latch 2 and the lock lever 3 in the base plate 1 can be improved. That is, when the latch 2 and the lock lever 3 are disposed on the same surface of the base plate 1, the lock lever 3 is disposed within the rotation locus of the latch 2 in order to engage the latch 2 and the lock lever 3. However, according to this embodiment, there is no limitation on the arrangement of the rotation axis O ₂ of the base portion 30 by arranging only the latch engagement portion 31 of the lock lever 3 in a rotating locus of the latch 2 was necessary to . Thus, the degree of freedom in layout can be increased.

  As mentioned above, although this invention was demonstrated based on embodiment, embodiment described above does not limit the invention which concerns on a claim. In addition, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention. Further, the present invention can be appropriately modified and implemented without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Base plate 10A ... 1st surface 10B ... 2nd surface 10b ... Through-hole 2 ... Latch 22 ... 2nd edge part (locked part)
DESCRIPTION OF SYMBOLS 3 ... Lock lever 30 ... Base 31 ... Latch latching | locking part 100 ... Vehicle locking device 210a ... Upper surface 310 ... Locking hole 310c ... 1st side surface (opposite surface)

Claims (3)

A base plate in which a through-hole penetrating in the thickness direction is formed;
A locking position in which a striker enters an entrance groove, and is rotatably supported by the base plate, and the striker is prevented from being separated from the entry groove; A latch that is displaced between the locked position
A lock lever that engages the latch to hold the latch in the locked position;
The lock lever is disposed on a second surface opposite to the first surface of the base plate on which the latch is disposed, and has a plate-like base portion having a rotation shaft, and extends from the base portion in the rotation shaft direction. And a latch locking portion that locks the latch through the through hole of the base plate,
Vehicle locking device. The latch has a locked portion that is locked to the latch locking portion,
The latch locking portion of the lock lever extends from the first surface to a position farther in the rotation axis direction than the locked portion of the latch,
The vehicle locking device according to claim 1. The latch locking portion of the lock lever has a facing surface facing a surface opposite to the surface facing the first surface of the locked portion of the latch,
The opposed surface is formed as a regulating surface that regulates release of engagement in the lock lever and the latch,
The vehicle locking device according to claim 1 or 2.

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