JPH09317289A - Door locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a door locking device by arranging a sealing material of the fluid of different viscosity according to the magnitude of the shear velocity between a door lock body and an opening member. SOLUTION: The dilatant fluid 40 is fixed to a door lock body 2, and a movable part 42 is connected to an opening member 32. When a vehicle is collided from its side, an outside handle is moved in the opening direction and a rod 4 is moved downward to move an open lever 5 downward. Though a lever 30 is turned counterclockwise, the turning is controlled when the impact force not less than the prescribed level is generated because the lever 30 is connected to the movable part 42. The downward movement of the lever 5 is eliminated, and because a projected piece 6 of the lever 5 is not engaged with an end part 7 of a release lever 3, the release lever 3 is not turned counterclockwise, and the opening system is not operated. Thus, a conventional rotary member to be operated by the inertia force can be dispensed with, and the structure can be simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door lock device.

[0002]

2. Description of the Related Art As a conventional door lock device, one disclosed in Japanese Patent Publication No. 46-7048 is known.

This is a door lock device for moving a release member to open and close a door. A step portion is provided in the middle of a push rod connecting the release member to a lock release lever.
The spring was arranged in the vicinity of the release member.
In this conventional device, when acceleration is not applied,
The protrusion of the rotating member does not engage with the step due to the force of the spring, but if the same acceleration as that in the releasing direction acts on the release member due to a shock or the like, the protrusion of the rotating member resists the force of the spring. The movement of the release member in the release direction is suppressed by engaging with the portion.

[0004]

However, in the above-mentioned conventional device, since the rotating member (weight) moves due to inertial force at the time of collision, the protrusion of the rotating member resists the force of the spring. Since the movement of the release member in the release direction is suppressed by engaging with the stepped portion, it is necessary to enlarge the rotating member in order to suppress the movement of the release member due to the inertial force at the time of collision. If the member is made large, a large space is required at the place for accommodating the rotating member.

Therefore, it is a technical object of the present invention to provide a more compact door lock device.

[0006]

[Means for Solving the Problems] Therefore, the means taken to solve the above technical problem is to provide a means for opening a door lock body between a door lock main body and an open operation member in which a pole for closing or opening a door is accommodated. That is, a fluid encapsulating member enclosing a fluid whose viscosity changes depending on the magnitude of the shear rate is interposed between the two.

According to the above construction, since the fluid sealing member whose viscosity changes depending on the magnitude of the shearing speed is interposed between the door lock body and the opening operation member, the movement of the opening operation member is suppressed by the viscosity. It For this reason,
There is no need for a rotating member that is conventionally required and that is actuated by inertial force during a collision. Therefore, the operation of the open system at the time of a collision can be suppressed with a simple configuration without increasing the size.

The shear rate acting on the fluid sealing member is
It is proportional to the moving speed of the open operation member, that is, the speed at which the outside handle or the inside handle connected to the open operation member operates at the time of a side collision or the like.

Here, as the fluid sealing member, a dilatant fluid, a silicon fluid or the like can be used.
This fluid is a fluid having a characteristic that when the impact velocity (shear velocity inside the member) exceeds a predetermined level, the clay and shear stress rapidly increase. That is, at the time of collision, particularly at the time of side collision, the viscosity and shear stress of the dilatant fluid rapidly increase, so that the movement of the open operation member is reliably suppressed.

In the above structure, the fluid sealing member has a main body and a movable portion, the main body is fixed to the door lock main body side having the door lock main body, and the movable portion is linked to the open operation member so that the fluid The characteristics of the enclosing member can be applied to the door lock device.

Further, by providing a propeller-like shearing member inside the fluid sealing member, the viscous liquid sealed inside is efficiently sheared by the movement of the movable portion, thereby suppressing the movement of the movable portion. To do.

Furthermore, since the fluid sealing member has a piston shape and an orifice is provided inside the movable piston, the viscous fluid due to the movement of the movable member has a large impact force when passing through the orifice. The movement of the movable part is suppressed by changing the resistance generated by the change.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

The door lock device 1 has a release lever 3 pivotally supported by a door lock body 2. The release lever 3 is rotatable around a fulcrum 26. The fulcrum 26 is the center of rotation of a pawl (not shown) that holds the door in the closed state and the openable state, and the release lever 3 interlocks with the pawl via a pin 27. FIG.
In, the door can be opened by rotating the release lever 3 counterclockwise. When the outside handle 11 (see FIG. 8) connected to the rod 4 is operated counterclockwise, a force acts in the direction A shown in FIG. Rotate the open lever 5 counterclockwise. Also,
When an inside handle (not shown) is operated, the end 51 abuts the protrusion 50, and a force acts in the B direction to rotate the lever 30, which is one of the open operation members, counterclockwise about the fulcrum 31. The counterclockwise rotation of the lever 30 is
Push the open lever 5 downward (direction A). The downward movement of the open lever 5 causes the protruding piece 6 of the open lever 5 to push the end portion 7 of the release lever 3 and rotate the release lever 3 counterclockwise to open the door. (See FIG. 2).

Explaining the lock mechanism, the door is normally locked to prevent the door from being opened accidentally. In this case, the door is locked by pressing the locking button 8 and rotating the locking arm 9 interlocking with the locking button 8 in the clockwise direction shown in FIG. 1 around the pin 10. The locking arm 9 is connected to the open lever 5 through the long hole 16 of the open lever 5. When the locking arm 9 is in the D position, the lowering of the open lever 5 (movement in the A direction) enables the projection 6 of the open lever 5 and the end 7 of the release lever 3 to come into contact with each other. However, when the locking button 8 is pushed and the locking arm 9 is pivoted about the pin 10 in the clockwise direction (direction E), the open lever 5 moves in the direction of arrow C.
In the direction of, and the projecting piece 6 is separated from the end 7 of the release lever 3. As a result, temporarily operate the inside handle or the outside handle 11 to open the open lever 5
Even if it is lowered, the projecting piece 6 and the end portion 7 do not come into contact with each other, and the door is left blank so that the door does not close.

Therefore, a case where the fluid sealing member of the present invention is used in a door lock device will be described. First, the fluid sealing member will be described. The fluid sealing member uses the dilatant fluid 40 in which the viscosity and the shear stress of the internal liquid change depending on the magnitude of the shear rate. Although the dilatant fluid 40 will be mainly described here as the fluid sealing member, a silicon fluid having silicon sealed therein can also be used.

This dilatant fluid 40 is shown in FIG. Here, for the sake of explanation, a diagram is shown in which a lid (not shown) is removed for easy understanding of the internal structure, and this dilatant fluid 40 has a main body portion 41 and a movable portion 42 rotatable with respect to the main body portion 41. . The main body portion 41 has a leg portion 47 having a hole 43 for attachment and can be fixed. In addition, a liquid chamber 56 is formed inside the main body 41 so that the viscous liquid 49 enters therein, and the propeller 48 is inserted therein and enclosed by a lid (not shown). The liquid 49 sealed in here is, for example, a liquid in which fine particles of acrylic acid ester / styrene copolymer are dispersed in water as a solvent.

On the other hand, the movable portion 42 has a linking portion 46 at its tip, and the center of rotation thereof coincides with the center of the propeller 48, so that the propeller 48 rotates in accordance with the rotation of the movable portion 42. There is. With such a configuration, the propeller 48 rotates at the speed at which the movable portion 42 rotates, and the viscous fluid 4 is generated.
Since 9 is sheared, if the shearing speed exceeds a predetermined level, the rotation resistance rapidly increases and rotation is suppressed. However, if the shear rate is slow, the rotation resistance is small and the rotation is not suppressed (see FIG. 9).

The dilatant fluid 40 is applied to the door lock device 1 with reference to FIG.

The body portion 41 of the dilatant fluid 40 is fixed to the door lock body 2. Here, the main body portion 41 may be indirectly fixed via a bracket instead of being directly fixed to the door lock main body 2, and a pole (not shown) for holding the vehicle door in the closed state and the openable state may be provided. It may be fixed to the housed door lock body side with a fixing member such as a screw 44 or an adhesive material. On the other hand, the movable portion 42 may be linked to the open operation member 32 side, and in the present embodiment, the link portion 46 is inserted into the long hole 45 provided in the upper portion of the lever 30 which is one of the open operation members 32. (See Fig. 3). In this state, the fulcrum 31 and the center of the main body portion 41 of the dilatant fluid 40, that is, the center of rotation of the movable portion 42 coincide with each other.

Next, the operation when a large impact force is generated in the outside handle 11 at the time of a collision, particularly a side collision will be described.

When a lateral impact force is generated on the vehicle,
The outside handle 11 tries to move in the opening direction shown in FIG.
The rod 4 tries to move downward due to the swinging of the lever 34 connected to. As a result, when the open lever 5 moves downward, the lever 30 shown in FIG. 1 tries to move counterclockwise around the fulcrum 31 in association therewith, but the upper portion of the lever 30 is provided with the elongated hole 45. Dilatant fluid 40
When the impact force (shear speed) of a predetermined level or higher is generated, the rotation of the movable portion 42 is suppressed, so that the dilatant can be rotated even if the lever 30 is rotated counterclockwise. The rotation of the open lever 5 is suppressed by passing the fluid 40, and as a result, the downward movement of the open lever 5 (direction A) disappears, the projecting piece 6 of the open lever 5 and the end portion 7 do not engage, and the release lever 3 is released. Does not rotate in the counterclockwise direction, the latch (not shown) inside the door lock body 2 does not rotate, and the operation of the open system can be prevented. That is, when a large impact force is generated at the time of a lateral collision of the vehicle, even if the internal viscosity of the dilatant fluid 40 suddenly increases and the open lever 11 moves in the opening direction, the open lever 5 moves in the A direction. By operating, it is possible to prevent the opening operation of the door.

However, in the normal case where no impact is applied or when the impact force is small, the dilatant fluid 40 has a small torque as shown in FIG. 9, and therefore the door is opened and closed in a normal state. There is no support.

Next, a case where a piston type member is used as the fluid sealing member will be described with reference to FIGS.

As in the above case, the dilatant fluid 40 is used as the fluid sealing member, and the fluid sealing member has a main body portion 41 and a movable portion 42. The main body 41 has a foot 47 so that it can be fixed, and has a liquid chamber 56 in which a viscous liquid 49 is enclosed. On the other hand, the movable portion 42 has a piston structure having a pressure wall 53 in FIG. 7, and the pressure wall 53 has a small orifice 54 through which the viscous liquid 49 passes.
The orifice 54 provided in the pressure wall 53 allows the pressure wall 53 of the piston 52 to slide in the liquid chamber 56. When the sliding speed (shear speed) is low, the resistance due to viscosity is small, but the shear speed is small. When is larger than a predetermined level, the viscosity rapidly increases and acts to suppress the movement of the movable portion 42.

A second embodiment in which the piston type dilatant fluid 40 is applied to the door lock device 1 will be described.

In this example as well, the body portion 41 of the dilatant fluid 40 is fixed to the door lock body 2 as in the first embodiment. Here, the main body portion 41 may be indirectly fixed via a bracket instead of being directly fixed to the door lock main body 2, and a pole (not shown) for holding the vehicle door in the closed state and the openable state may be provided. It may be fixed to the housed door lock body side with a fixing member such as a screw 44 or an adhesive material. On the other hand, the movable part 4 having a piston function
2 may be linked to the open operation member 32 side. In the present embodiment, the link portion 46 having an L-shaped tip is inserted into the hole 57 provided in the upper portion of the lever 30, and normally the lever 30 is rotated. The piston 52 is adapted to make a stroke according to.

The operation when a large impact force is generated at the time of collision is the same as the above-mentioned operation, and therefore its explanation is omitted.

The structure of the fluid sealing member is not limited to the above-mentioned structure, and it is sufficient that a liquid in which clay changes depending on the magnitude of impact force is sealed.

[0030]

Advantageous Effects of Invention According to the present invention, a fluid encapsulation in which a fluid whose viscosity changes according to the magnitude of the shear rate is enclosed between the door lock body that houses the pawl that opens or closes the door and the open operation member. By interposing a member, it is possible to suppress the operation of the door open system at the time of a collision by utilizing the viscosity of the fluid sealing member, so the rotating member that operates by the inertial force, which was required in the past, is not required, and the size is increased. It is possible to solve a technical problem with a simple configuration without performing.

Further, the fluid sealing member has a main body portion and a movable portion, the main body portion is fixed to the door lock main body side having the door lock main body, and the movable portion is preferably linked to the open operation member. With this configuration, the characteristics of the fluid sealing member can be applied to the door lock device with a simple structure.

Further, by providing a propeller-like shearing member inside the fluid sealing member, the viscous liquid sealed inside is efficiently sheared by the movement of the movable part, so that a sudden impact force is generated. In this case, since the resistance becomes large, the movement of the movable part can be efficiently suppressed.

Furthermore, since the fluid sealing member is in the shape of a piston and an orifice is provided inside the movable piston, the viscous fluid due to the movement of the movable member has a large impact force when passing through the orifice. Since the resistance generated due to this can be changed, the movement of the movable part can be efficiently suppressed.

[Brief description of drawings]

FIG. 1 is a front view of a door lock device showing a first embodiment of the present invention.

FIG. 2 is a partial front view showing a state in which the open lever of FIG. 1 is operated in the opening direction.

FIG. 3 is a partial side view of essential parts including the fluid sealing member of FIG.

FIG. 4 is a schematic view of the fluid sealing member of FIG. 1.

FIG. 5 is a partial front view of the door lock device showing the second embodiment of the present invention.

FIG. 6 is a partial front view showing a state in which the open lever of FIG. 5 operates in the opening direction.

FIG. 7 is a schematic view of the fluid sealing member of FIG.

FIG. 8 is a diagram showing a configuration of a door handle and a door lock device.

FIG. 9 is a diagram showing characteristics of a fluid sealing member.

[Explanation of symbols]

 1 Door Lock Device 2 Door Lock Main Body 5 Open Lever (Open Operating Member) 30 Lever (Open Operating Member) 31 Support Point 40 Dilatant Fluid (Fluid Filling Member) 41 Main Body 42 Movable Part 47 Foot 48 Propeller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshikatsu Furuya 2-chome, Asahi-cho, Kariya city, Aichi Prefecture Aisin Seiki Co., Ltd.

Claims (4)

[Claims] 1. A door lock device for opening and closing a door by moving an open operation member, wherein a shear is provided between a door lock main body accommodating a pole for closing or opening the door and the open operation member. A door lock device characterized in that a fluid sealing member enclosing a fluid whose viscosity changes depending on the magnitude of speed is interposed. 2. The fluid sealing member has a main body portion and a movable portion, the main body portion is fixed to a door lock main body side, and the movable portion is linked to the open operation member. Door lock device described in. 3. The door lock device according to claim 1, wherein the fluid sealing member has a propeller-like shearing member inside. 4. The door lock device according to claim 1, wherein the fluid sealing member has a piston shape, and has an orifice inside a movable piston.