JPH05124436A - Freezing releasing device for door of vehicle - Google Patents

Abstract

PURPOSE:To provide a freezing releasing device capable of reliably opening doors of an automobile even when the doors are fixed as a result of splashing water and snow being frozen. CONSTITUTION:A door for a vehicle is constituted such that a lock striker 34 is arranged to the edge part of a car body opening 2b is disposed and a door latch 36 engaged and disengaged with and from the lock striker 34 is disposed to a back door 5 by means of which a car body opening 2b is opened and closed. In this case, the lock striker 34 is disposed movably in a door opening direction and a damper stay 43 (a forced opening mechanism) to energize the lock striker 34 in an opening direction is provided. This constitution causes release of freezing, occurring owing to splash water and snow, through forced opening of the back door 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a releasing device when a door of an automobile is frozen at a door opening. The present invention is suitable for, for example, a back door arranged on the rear end surface of a one-box type automobile, and will be described below as an example.

[0002]

2. Description of the Related Art Generally, in a one-box type automobile, a wide opening is formed at a rear end portion of a vehicle body, and a flip-up type back door is openably and closably arranged in the opening. The upper edge of the back door is pivotally supported by the upper edge of the opening by a hinge, and the lower edge is fitted with a door latch that engages and disengages a lock striker arranged in the door opening. Also,
In the one-box type vehicle, it has been proposed that the back door is provided with an automatic opening / closing device for convenient loading and unloading of luggage and the like. By the way, in cold regions where the temperature may drop below freezing, rainwater, etc. adhering to the abutting part between the back door and the weather strip at the door opening freezes,
Alternatively, the snow accumulated on the steps of the back door and the rear bumper may freeze, and the back door may not open. In order to prevent this freezing problem, conventionally, for example, a method of applying silicone oil to the surface of the weather strip,
Alternatively, a method has been adopted in which a protector is attached to the step portion between the back door and the rear bumper to prevent snow accumulation (see, for example, Japanese Patent Application No. 62-183553).

[0003]

However, the above-mentioned conventional method of applying silicone oil has a low anti-freezing effect, and it is difficult to surely prevent snowfall even if a protector is provided. Currently, it is thawed and removed by hand, which is a labor-intensive and labor-intensive task.

The present invention has been made in view of the above conventional circumstances, and an object of the present invention is to provide a vehicle door antifreezing device that can be reliably opened even when the door is frozen.

[0005]

SUMMARY OF THE INVENTION Therefore, the present invention has a door latch that engages and disengages with a lock striker disposed at an edge of a door opening of a vehicle body. A freezing release device for a vehicle door that releases freezing, wherein the lock striker is movably arranged in the door opening direction, and the lock striker is moved in the opening direction with the door latch engaged. It is characterized by having an opening mechanism. Here, the movement amount of the lock striker in the present invention is sufficient if it is, for example, about 10 mm, and the pushing force for moving the lock striker may be, for example, about 100 Kg · f. Further, the door of the present invention includes a side door arranged to rotate in the vehicle width direction on the side panel of the vehicle, a slide door arranged to slide in the vehicle front-rear direction, and a vertical direction on the back panel. It includes any door such as a back door arranged to rotate.

[0006]

According to the vehicle door antifreezing device of the present invention, when the door is frozen due to water or snow, the door pushing mechanism moves the lock striker in the opening direction. This forces the lock striker to push open the door in the opening direction via the door latch. As described above, in the present invention, the lock striker is movably arranged in the door opening direction, and the door pushing mechanism for moving the lock striker in the opening direction with the door latch engaged is provided. Can be opened by hand, so it can be manually thawed,
Removal work can be eliminated.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 are views for explaining a vehicle door antifreezing device according to an embodiment of the present invention. The present embodiment, in the back door of a one-box type automobile equipped with a door lock assisting device forcibly retracting the door to the lock position and closing the door when the door reaches the fully closed position,
In this example, the door lock assisting device is also used as a freeze releasing device. In FIGS. 3 to 5, reference numeral 1 denotes a one-box type vehicle to which the device of this embodiment is applied.
A front door 3 is provided in the front part of the above, a slide type side door 4 is provided in the central part so as to be openable and closable, and a flip-up type back door 5 is provided in the rear end opening 2b. .. The upper edge 5a of the back door 5 is rotatably supported by the roof panel 2a by a hinge 6. Further, a rear bumper 23 extending in the vehicle width direction is arranged below the rear end opening 2b of the vehicle body 2, and the bumper 23 projects outward from the rear end surface of the vehicle body. Furthermore, the opening 2b
A weather strip 53 is arranged at the peripheral edge of
The weather strip 53 includes the opening 2b and the back door 5.
There is a seal between

An automatic opening / closing device 7 is arranged on the back door 5, and the automatic opening / closing device 7 is provided on the back door 5.
Drive device 10 including a hydraulic cylinder 8 and a hydraulic pressure generating mechanism 9 for driving the opening and closing, an opening and closing switch 11 for outputting an open signal and a close signal, and courtesy lamp switches 12a and 12b
And a drive control device 13 that outputs a drive operation signal to the drive device 10. The hydraulic cylinder 8
Inserts a piston (not shown) into the cylinder body 8a by urging the back door 5 by its own weight in the contracting direction to connect the piston rod 8b to the piston and to project one end of the rod 8b outward. It has a structure. The cylinder body 8a is pivotally supported on the edge of the rear end opening 2b of the vehicle body 2, and the projecting end of the piston rod 8b is pivotally supported on the inner panel of the back door 5.
Connected to four.

In the hydraulic pressure generating mechanism 9, the speed reducer 16 is connected to the output shaft of the electric motor 15, and the drive arm 17 fixed to the output shaft 16a of the speed reducer 16 is connected to the piston rod 18a of the hydraulic pressure generating cylinder 18. It has a structure that is rotatably connected to. The hydraulic pressure generating cylinder 18 is shown in FIG.
As shown in FIG.
Is slidably inserted so that the inner end of the piston rod 18a is brought into contact with the piston 18c, and the piston 1
8c and the cylinder body 18b form a hydraulic chamber 18d. An end 19a of a hydraulic hose 19 is connected to the hydraulic chamber 18d of the cylinder body 18b, and an extension end 19b of the hose 19 is connected to the cylinder body 8a. As a result, when the piston rod 18a is moved forward by the drive arm 17, a hydraulic pressure is generated in the hydraulic chamber 18d, and this hydraulic pressure acts on the hydraulic cylinder 8 from the hydraulic hose 19, and the piston rod 8b of the cylinder 8 moves forward and back. The door 5 is designed to open. Further, the drive arm 17 has a piston rod 18a.
Is moved backward, the hydraulic pressure from the hydraulic cylinder 8 side causes the piston rod 18a to follow the backward movement and the back door 5 is closed.

The open / close switch 11 is arranged near the steering handle 20 of the vehicle body 2 and is configured to output an open signal or a close signal to the drive control device 13. Also, the above-mentioned courtesy lamp switches 12a, 1
2b are respectively arranged on the left and right of the edge of the rear end opening 2b of the vehicle body 2. This is turned on when the back door 5 is opened and the courtesy lamp is turned on, and when it is closed it is turned off and turned off. It is what makes them. Further, the courtesy lamp switches 12a and 12b are configured to output an OFF signal to the drive control device 13 when they are pushed in and an ON signal when they are projected outward.

Further, the drive control device 13 is configured to output an open signal or a close signal to the drive device 10 when an open signal or a close signal from the open / close switch 11 is input. Further, when an OFF signal is input from the courtesy lamp switches 12a and 12b, a close signal is output to the driving device 10, and when an ON signal is input, an open signal is output.

Further, as shown in FIGS. 1 and 2, a door lock assisting device 30 is arranged on the back door 5, and the device 30 is constructed so as to function also as a freeze releasing device which will be described later. ing. The door lock assisting device 30 engages and disengages a lock striker 34 arranged at a lower edge of the rear end opening 2b of the vehicle body 2 and a door latch 36 arranged at a lower portion of the back door 5 for engagement and disengagement. When,
A drive mechanism 40 for driving the lock striker 34 forward and backward.
It consists of and.

The engagement / disengagement mechanism 25 includes the door latch 36 pivotally supported on the door panel by a pin member 36a in a state of being biased in the locking direction, and a pole member for holding the door latch 36 in a state of being engaged with the lock striker 34. 33
And a side lever 32 and a push lever 31 which rotate the pole member 33 in a direction in which the engagement is released,
It is composed of a push button 22 for rotating the push lever 31 in the releasing direction. A solenoid 21 for expanding and contracting the output shaft by an electromagnet is connected to the side lever 32, and the solenoid 21 holds the engagement / disengagement mechanism 25 in an engaged state or a released state.

A base member 37 is fixed to the lower edge of the opening 2b of the vehicle body 2 with screws, and elongated holes 37 extending in the vehicle front-rear direction are formed on the left and right side walls of the base member 37.
a is formed. Furthermore, the above-mentioned rock striker 34
Is bent at its tip to form an L-shape, and a rod 34a orthogonal to this is fixed to this tip, and
Stoppers 34b are attached to both ends of the rod 34a, and the rod 34a is inserted through the elongated hole 37a. As a result, the lock striker 34 is
When the back door 5 is almost completely closed, the door latch 36
And a full latch position b (see FIG. 1 two-dot chain line) that holds the door 5 in a fully closed state. The moving distance is set to about 10 mm.

Further, the drive mechanism 40 is disposed on the lower surface of the floor panel 2c, and an upper end portion of a substantially S-shaped arm plate 42 is pivotally supported on the panel 2c via a bracket 41. The lower end of the arm plate 42 is connected to a rod 43a of a damper stay 43 which is filled with high-pressure gas for urging the arm plate 42 in the door opening direction. The upper end of the damper stay 43 is pivotally supported by the bracket 41. Has been done. Further, a slit 42a having a long hole is formed in the center of the arm plate 42, and a connecting member 44 is slidably mounted in the slit 42a. This connecting member 44 includes an outer cable 45a and an inner cable 4
One end of the inner cable 45b of the wire cable 45 consisting of 5b is fixed by bolts, and one end of the outer cable 45a is fixed to the bracket 41 via a fixing member 46. A coil spring 47 is arranged between the fixing member 46 and the connecting member 44. Further, the slit 42a of the arm plate 42
The front end of the lock striker 34 is pivotally supported on the upper part of the.

The other end of the wire cable 45 is
It is connected to the hydraulic pressure generation mechanism 9 described above. That is, the bracket 50 is fixed near the drive arm 17, and the outer cable 45a is fixed to the bracket 50.
The other end of is fixed by bolts. The other end of the inner cable 45b is locked to the upper edge of the drive arm 17. Further, a limit switch 52 is arranged near the drive arm 17, and the switch 52 detects that the drive arm 17 has rotated to reach the half-latch position a and once stops the drive by the motor. It is for doing.

Next, the function and effect of the apparatus of this embodiment will be described. First, the lock support operation of the door lock support device 30 will be described. When the back door 5 is fully open,
Since the piston rod 18a is located at the forward end and the connecting member 44 is located near the forward end of the slit 42a, the damper stay 43 extends to position the lock striker 34 at the half latch position a. To close the back door 5, the opening / closing switch 11 is closed or the courtesy lamp switches 12a and 12b are pushed and then released. Then, the electric motor 15 rotates the drive arm 17 in the counterclockwise direction, which causes the piston rod 18 to rotate.
a is retracted by hydraulic pressure, and the cylinder rod 8b of the hydraulic cylinder 8 is contracted by the weight of the door and the return spring, whereby the back door 5 automatically rotates in the closing direction. When the back door 5 is rotated to a substantially fully closed state, the lock striker 34 is moved as described above.
Is located at the half-latch position a, the door latch 36 engages with the half-latch position a, and the drive arm 17 rotates counterclockwise as the piston rod 18a retreats, causing the connecting member 44 to move to the slit 42a. The limit switch 52 is turned on while pulling to the retracted end position, whereby the drive by the motor is temporarily stopped. After a lapse of a predetermined time from the ON signal input from the limit switch 52, the electric motor 15 further rotates the drive arm 17 counterclockwise. As a result, the lock striker 34 retracts to the full latch position b via the wire cable 45 and the arm plate 42, and as a result, the door latch 36 pulls the back door 5 to the fully closed state.

When the back door 5 is opened, when the open / close switch 11 is closed, the electric motor 15 rotates the drive arm 17 in the clockwise direction, so that the wire cable 45 is loosened. At this time, the back door 5 is slightly opened by the repulsive force of the weather strip 53, and the door latch 36 pulls the lock striker 34 by the door opening force, and the damper stay 43 is pulled by the lock striker 34.
By pressing, the lock striker 34 immediately advances to the half-latch position a. At this time, the limit switch 52 is turned off and the piston rod 18
The a starts contacting the piston 18c. Then, the solenoid 21 is actuated to release the engagement between the door latch 36 and the lock striker 34, and the piston rod 18a advances the piston 18c, whereby hydraulic pressure acts on the hydraulic cylinder 8 via the hydraulic hose 19 and the piston rod 8b will be extended and the back door 5 will be opened automatically.

Next, the freeze release operation by the door lock assisting device 30 will be described. The freeze release operation is performed in association with the normal door opening operation. When the open / close switch 11 is turned on, the electric motor 15 causes the drive arm 1 to move.
By rotating 7 clockwise, the wire cable 45
Loosens. If the bag door 5 is frozen at this time, the back door 5 cannot be opened only by the repulsive force of the weather strip 53 described above, but the repulsive force of the damper stay 43 is increased according to the lever ratio of the arm plate 42. Then, the lock striker 34 is forcibly advanced to the half-latch position a. As a result, the back door 5 is pushed rearward through the door latch 36 and the back door 5 is pushed by the pressing force at this time.
The freezing between the rear bumper 23 and the rear bumper 23 is removed. After that, the limit switch 52 is turned off as described above, the engagement of the door latch 36 and the lock striker 34 is released by the operation of the solenoid 21, and the piston rod 18a advances the piston 18c to move the back door 5 forward. It will open automatically.

As described above, according to the apparatus of this embodiment, the lock striker 34 is provided so as to be movable back and forth between the half latch position a and the full latch position b, and the drive mechanism 40 for driving the lock striker 34 forward and backward is provided. So
When closing the back door 5, it is sufficient to close the back door 5 in a substantially fully closed state.
The driving force can be reduced and the half-door can be prevented.

In the apparatus of this embodiment, the lock striker 34 is arranged so as to be movable in the opening direction, and the lock striker 34 is urged in the opening direction by the damper stay 43 so that the back door 5 is pushed open. With the same device for performing the door lock assisting operation described above, even if the door is splashed with water or frozen by the snow, the door can be reliably opened, and thawing and removing work by human hands can be eliminated.

In the above embodiment, the lock striker is slid between the half-latch position and the full-latch position, but it may be swung. Further, although the lock striker is biased by the damper stay in the above embodiment, the door pushing mechanism of the present invention is not limited to this, and may be constituted by a cylinder mechanism, for example. In this case, a freeze release switch may be separately provided and operated when the back door 5 freezes and cannot be opened. Further, in the above-described embodiment, the case where the invention is applied to the back door equipped with the automatic opening / closing device has been described as an example. However, the present invention can be applied to a normal back door which is manually opened and closed, and a front door. , Or applicable to side doors.

[0023]

As described above, according to the vehicle door antifreezing device of the present invention, the door pushing mechanism for moving the lock striker in the opening direction with the door latch engaged is provided. Even if it is frozen by ice or snow, it can be opened reliably, and there is the effect that the thawing and removal work by human hands is unnecessary.

[Brief description of drawings]

FIG. 1 is a configuration diagram illustrating a vehicle door antifreezing device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an engaging / disengaging operation of the lock striker and the door latch of the above embodiment.

FIG. 3 is a perspective view showing a drive device for the back door according to the embodiment.

FIG. 4 is a side view of a one-box type automobile provided with the freeze release device of the above embodiment.

FIG. 5 is a rear view of the one-box type automobile of the above embodiment.

[Explanation of symbols]

 2b Door opening 5 Back door 30 Door lock support device (freezing release device) 34 Lock striker 36 Door latch 40 Drive mechanism (door push-open mechanism)

Claims (1)

[Claims] 1. Freezing of a vehicle door having a door latch for engaging and disengaging a lock striker arranged at an edge portion of a door opening of a vehicle body, and freezing the door opening and closing the door opening and the door opening A release device, wherein the lock striker is movably arranged in the door opening direction, and a door pushing mechanism for moving the lock striker in the opening direction with the door latch engaged is provided. Defrosting device for vehicle doors.