JP2755551B2 - Lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device suitable for use as, for example, a hood lock or a door lock of an automobile.

[0002]

2. Description of the Related Art Conventionally, as this type of lock device, for example, a lock device described in Japanese Patent Publication No. 4-69713 is known.

In such a lock device, a latch lever which is engaged with an incoming striker and rotates, and a locking lever which can engage with the latch lever and prevent the rotation thereof, are rotatable on a substrate. Further, an engagement member is provided on the substrate to increase the engagement strength of the levers, and the engagement member prevents the latch lever from moving away from the substrate together with locking. Has become.

On the other hand, as another conventional example, in order to increase the engagement strength between the latch lever and the locking lever, a cover plate is bridged between the ends of the shafts that support the levers, and the latch plate is latched by the cover plate. There is also a configuration that prevents the lever from moving away from the substrate. One end of each of the shafts supporting both levers is swaged to the substrate, and the other end is swaged to the cover plate.

[0005]

However, in the former locking device, it is necessary to secure a space for installing the engaging member on the board of a limited size, and to urge the latch lever and the locking lever. It was difficult to secure the installation space while avoiding interference with the spring. In addition, in order to avoid interference between the engaging members and their springs, the entire locking device is increased in size, particularly in the thickness direction of the substrate, and it has been difficult to satisfy the required shape and size.

On the other hand, in the latter locking device, the number of parts increases due to the necessity of the cover plate, and since both ends of the shaft that supports both levers are crimped, the assemblability of the locking device is poor. Was.

SUMMARY OF THE INVENTION An object of the present invention is to provide a lock device capable of easily increasing the engagement strength of a latch lever with a striker and a locking lever without increasing the size of the entire device and deteriorating the assemblability. become.

[0008]

SUMMARY OF THE INVENTION A lock device according to the present invention comprises:
A latch lever rotatably supported on the substrate by the first shaft and rotating by meshing with an incoming striker;
A locking device rotatably supported by the substrate by a second shaft and locked to the latch lever to prevent rotation of the latch lever; A stopper portion that opposes an upper surface of the latch lever and prevents the latch lever from moving in a direction away from the substrate when at least the latch lever rotates by engaging with the striker. Features.

[0009]

According to the lock device of the present invention, the shaft required to support the locking lever is provided with a stopper for preventing the latch lever from moving away from the substrate. The engagement strength of the latch lever with respect to the striker and the locking lever is easily increased without increasing the size and deteriorating the assemblability.

Further, when a flange is integrally formed on a shaft that supports the locking lever and the flange is used as a stopper, an increase in the number of parts can be avoided.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. This embodiment is an application example as a lock device for a hood of an automobile.

In FIG. 1, reference numeral 1 denotes a board mounted at a fixed position on a vehicle body (not shown). When a hood (not shown) is closed, a striker 2 fixed to the hood enters the groove 1A of the board 1. 3 is a striker base attached to the hood. A latch lever 6 and a locking lever 7 are provided on the substrate 1 by first and second shafts 4 and 5.
Are rotatably pivotally supported. The lower ends of the shafts 4 and 5 are caulked at the lower surface of the substrate 1, and between the flat circular flanges 4A and 5A integrally formed on the upper ends of the shafts 4 and 5 and the substrate 1, Each of the latch lever 6 and the locking lever 7 is rotatably supported (see FIG. 3).

The latch lever 6 has first and second claw portions 6.
A, 6B and a spring locking portion 6C are formed, and the latch lever 6 is moved by the first spring 8 stretched between the locking portion 6C and the fixed position of the substrate 1 in FIG.
It is biased to medium rotational direction of arrow A _2. The locking lever 7 has a lock claw portion 7A and a spring locking portion 7B.
There is formed by the second spring 9 is stretched between the engaging portion 7B and the fixed position of the substrate 1, the locking lever 7 is biased in the rotating direction of the arrow in FIG. 1 B ₁ ing. The locking portion 7B of the locking lever 7 is connected via a wire W to a handle (not shown) in the vehicle.

The levers 6 and 7 have the same plate thickness W (see FIG. 3), and the flange 5A (stopper) of the shaft 5 rotates the first claw 6A of the latch lever 6. It is located on the track. Tapered surfaces 4B and 5B (see FIG. 3) are formed on the outer peripheral edges of the flanges 4A and 5A of the shafts 4 and 5, respectively.

On the lower surface of the substrate 1, a secondary latch lever 10 is rotatably supported about an axis (not shown) in the vertical direction (the direction of the front and back of the paper in FIG. 1). And is biased is formed with the claw portions 10A and the operation unit 10B, also by a spring (not shown) in the rotational direction of FIG. 1 in an arrow C ₁ to the lever 10.

Next, the operation will be described.

[0017] When the cover is in the open state, as shown in FIG. 2, the latch lever 6 is held in the arrow A ₂ direction rotation limit position by the spring 8, the locking lever 7
There has been held in the arrow B ₁ is held in the direction of the rotation limit position, also the arrow C ₁ direction of rotation limit position by a spring secondary latch lever 10 is not shown by a spring 9.

By closing the cover, the striker 2 enters the groove 1A of the substrate 1 and
The striker base 3 approaches the secondary latch lever 10. Striker base 3, in contact with the claw portion 10A of the secondary latch lever 10, against the spring (not shown) the lever 10 is once rotated in the arrow C ₂ direction, then rotating lever 10 in the arrow C ₁ direction By returning to the movement, it is locked to the claw portion 10A as shown in FIG.

Meanwhile, the striker 2 is in contact with the second claw portion 6B of the latch lever 6 is rotated in the arrow A ₁ direction against the lever 6 to the spring 8. By the rotation of the lever 6, the claw portion 6B first comes into contact with the locking claw portion 7A of the locking lever 7, and the lever 7 is
Is rotated in the arrow B ₂ direction against the, then, rides over the claw portion 6B is a locking pawl portion 7A, by the lever 7 is rotated back to the arrow B ₁ direction, the claw portion as shown in FIG. 1 6
B is locked by the lock claw 7A. As a result, as shown in FIG.
A, together with the meshing between 6B, meshes lever 6, 7 to each other, is prevented arrow A ₂ direction of rotation of the lever 6, the cover is closed state.

In such a closed state, the tip of the first claw 6A of the latch lever 6 enters under the flange 5A of the shaft 5, and as shown in FIG. It is sandwiched between the upper surface and the lower surface of the flange 5A. Therefore,
For example, when an impact load is applied to move the latch lever 6 in the direction away from the substrate 1 (upward in FIG. 3), the upper surface of the claw portion 6A (the surface on the front and back sides of the paper surface in FIG. 1) The contact with the lower surface of the flange 5A prevents the movement of the latch lever 6, and the engagement strength of the latch lever 6 with the striker 2 and the locking lever 7 is ensured.

The flange 5A has a tapered surface 5B.
Is formed, the claw 6A smoothly enters under the flange 5A. Note that, instead of the tapered surface portion 5B, a step portion may be formed on the peripheral portion of the flange portion 5A, so that the claw portion 6A can enter smoothly. Also, when the latch lever 6 begins to rotate in the arrow A ₁ direction from the state shown in FIG. 2, the second pawl portion of the plate 6 6
B may pass under the flange 5A.

Next, in order to free the hood of the closed state, first, the wire W is pulled in the direction of arrow D, by rotating in the arrow B ₂ direction against the locking lever 7 to the spring 9, the The engagement between the lock claw 7A and the claw 6B of the latch lever 6 is released, and the latch
Rotate and return in _two directions. Then striker base 3
Operator from the bottom insert the hand, and the operation section 10B of the secondary latch lever 10 by pushing downward in FIG. 1, is rotated in the arrow C ₂ direction against the spring (not shown) the lever 10, the pawl Unlock the striker base 3 with the part 10A. As a result, the hood is completely opened.

The flange 5A is formed integrally with the shaft 5 required to support the locking lever 7, and interference with other components such as the springs 8 and 9 can be avoided. The latch lever 6 can be prevented from moving above the substrate 1 without increasing the number of points or increasing the size of the lock device itself. In this embodiment,
Since the latch lever 6 and the locking lever 7 have the same plate thickness W, there is necessarily an interval between the upper surface of the substrate 1 and the flange 5A of the shaft 5 for the claw 6A of the latch lever 6 to enter. It is formed with high precision.

The flange 5A may be a member separate from the shaft 5 and fixed to the shaft 5. The flange 5A may have any shape and the like.
A stopper portion that opposes the upper surface of the latch lever 6 (the surface on the paper side in FIG. 1) and prevents the latch lever 6 from moving away from the substrate 1 when the latch lever 6 is engaged with the latch lever 6. I just need.

[0025]

As described above, in the lock device of the present invention, the shaft required to support the locking lever is provided with the stopper for preventing the latch lever from moving away from the substrate. With the configuration provided, without increasing the size of the entire device and deteriorating the assemblability,
The engagement strength of the latch lever with respect to the striker and the locking lever can be easily increased.

Further, by forming a flange portion integrally with a shaft that supports the locking lever and using the flange portion as a stopper portion, it is possible to avoid an increase in the number of parts.

[Brief description of the drawings]

FIG. 1 is a plan view at the time of a cover closing operation according to an embodiment of the present invention.

FIG. 2 is a plan view of the lock device shown in FIG. 1 during a cover opening operation.

FIG. 3 is a sectional view taken along line III-III in FIG.

[Explanation of symbols]

 Reference Signs List 1 substrate 2 striker 4 first shaft 5 second shaft 5A flange (stopper) 6 latch lever 6A, 6B claw 7 locking lever

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E05B 65/12-65/42

Claims (2)

(57) [Claims] A latch lever rotatably supported by a substrate by a first shaft and meshing with an incoming striker, and a latch lever rotatably supported by the substrate by a second shaft. And a locking lever that can be locked to the latch lever to prevent rotation of the latch lever. At least the latch lever meshes with the striker on the second shaft and rotates. A locking unit provided with a stopper that opposes an upper surface of the latch lever and prevents the latch lever from moving in a direction away from the substrate when the latch lever is moved. 2. The locking device according to claim 1, wherein the stopper is a flange integrally formed with an end of the second shaft.