WO2021084789A1 - Vehicular door check device - Google Patents

Abstract

This vehicular door check device prevents a fully open stopper from being broken when a case contacts the fully open stopper.　In the present invention, an arm 2 is formed by coating the surface of a steel plate 2A with a synthetic resin layer 2B. A fully open stopper 5 is formed by the synthetic resin layer 2B, and has a stopper surface 51 which exhibits a convex circular arc shape protruding in a circular arc shape towards the front in a plan view, and which contacts a contact surface 64a of a case 6 made of a synthetic resin when a door D is fully open. The contact surface 64a of the case 6 is formed integrally on the case 6 and exhibits a concave circular arc shape which recesses in a circular arc shape towards the front in a plan view.

Description

Vehicle door check device

The present invention relates to a vehicle door check device.

The vehicle door check device has an arm that is swingably connected to the vehicle body at the front end and forms a fully open stopper at the rear end, a case that is fixed to the door, and is housed in the case to open and close the door. A check unit having a shoe that slides the arm is provided, and the shoe slides the arm as the door opens and closes to give a predetermined check force to the door opening and closing operation, and the case of the check unit. Regulates the fully open position of the door by contacting the fully open stopper. The arm is formed by covering the entire outer surface of a single steel sheet with a synthetic resin layer made of a synthetic resin material. The fully open stopper is formed by the synthetic resin layer.

In the vehicle door check device described in Patent Document 1, when the case comes into contact with the fully open stopper, the stopper surface of the fully open stopper is convex forward so that the stopper surface of the fully open stopper does not come into contact with the case. It has an arcuate curved surface in a plan view that bulges out.

JP-A-2017-197946

However, in the vehicle door check device described in Patent Document 1, when the case comes into contact with the stopper surface of the fully open stopper due to the opening operation of the door, one-sided contact of the stopper surface with respect to the case can be prevented, but mutual contact occurs. Since the line contact occurs, the surface pressure of the contact portion increases, and in particular, the fully open stopper formed of the synthetic resin layer may be damaged by the impact force, and proper regulation is difficult.

In view of the above problems, the present invention is for vehicles in which damage to the fully open stopper can be suppressed by lowering the surface pressure of the contact portion when the case is in contact with the fully open stopper to regulate the fully open position of the door. An object of the present invention is to provide a door check device.

According to the present invention, the above problems are solved as follows.
According to the present invention, a synthetic resin case fixed to a door that is pivotally supported by the vehicle body and an arm that penetrates a through hole provided in the case and is swingably connected to the vehicle body at a front end portion. A fully open stopper provided at the rear end of the arm and abutting on a contact surface provided on the case to regulate the fully open position of the door, and a fully open stopper housed in the case for opening / closing the door. In a vehicle door check device comprising a shoe that slides on the detent surface of the arm and a spring that is housed in the case and urges the shoe toward the detent surface. The surface of the steel plate is covered with a synthetic resin layer, and the fully open stopper is formed of the synthetic resin layer and has a convex arc shape that protrudes forward in a plan view in an arc shape. It has a stopper surface that comes into contact with the contact surface of the case when fully opened, and the contact surface is integrally formed with the case and has a concave arc shape that is concave forward in a plan view. And.

Preferably, a contact portion projecting rearward from the rear surface of the case is provided in each of the upper portion and the lower portion of the through hole in the case, and the contact portion facing the stopper surface of the fully open stopper is provided with the contact portion. Provide a contact surface.

Preferably, the width of the contact portion in the case is larger than the opening width of the through hole.

Preferably, the stopper surface of the fully open stopper has a convex arc shape that protrudes forward in an arc shape in a side view, and the contact surface of the contact portion in the case is recessed in an arc shape forward in a side view. It has a concave arc shape.

According to the present invention, the stopper surface of the fully open stopper has a convex arc shape that protrudes forward in an arc shape in a plan view, and the contact surface of the case has a concave arc shape that dents forward in an arc shape in a plan view. The surface pressure when the contact surface comes into contact with the stopper surface can be reduced to prevent damage to the synthetic resin case and the fully open stopper.

It is a perspective view of the door check device for a vehicle which concerns on this invention. It is an exploded perspective view of the door check device for a vehicle. It is a top view of the door check device for a vehicle. FIG. 3 is a vertical sectional view taken along line IV-IV in FIG. It is a perspective view which shows the internal structure of an arm. It is an enlarged side view of a main part. It is an enlarged plan view of a main part. FIG. 6 is a vertical sectional view taken along line VIII-VIII in FIG. FIG. 6 is a vertical sectional view taken along line IX-IX in FIG. FIG. 6 is a cross-sectional view taken along the line XX in FIG. FIG. 6 is a cross-sectional view taken along the line XI-XI in FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The vehicle door check device 1 imparts a check force (resistance force) to the opening / closing operation of the door D pivotally supported by a pair of upper and lower hinges (not shown) having hinge axes in the vertical direction on the vehicle body B of the vehicle. Is held in the half-open position or restricted to the fully-open position, and the front end is attached to the arm 2 that is pivotally attached to the vehicle body B and the door D, and the arm 2 is attached to the door D as the door D opens and closes. A check unit 3 that moves the upper and lower surfaces along the longitudinal direction is provided.

As shown in FIGS. 4 and 5, the arm 2 is formed by covering the entire surface of a single steel plate 2A with a synthetic resin layer 2B, and as shown in FIG. 3, a pivot 41 having a front end portion facing in the vertical direction. It is pivotally attached to the bracket 4 fixed to the vehicle body B so as to be swingable in the left-right direction.

As shown in FIG. 2, a shaft hole 21 into which the pivot 41 is inserted is provided at the front end portion of the arm 2, and a fully open stopper 5 that regulates the fully open position of the door D is integrally formed at the rear end portion. Similarly, in the region between the front end portion and the fully open stopper 5, convex portions and concave portions are alternately provided along the longitudinal direction (front-rear direction) to give a check force to the opening / closing operation of the door D. Detent surfaces 22, 22 are formed.

As shown in FIG. 5, the steel plate 2A is formed so that the longitudinal direction faces the front-rear direction, and the plate surface changes from the horizontal direction to the vertical direction at the rear end portion where the fully open stopper 5 is provided. A hook portion 21A twisted 90 degrees by twisting is provided. The hook portion 21A has a substantially horizontal T-shape in a side view, and is formed so that the vertical dimension is at least larger than the vertical opening height of the through hole 61a provided in the case 6 described later.

The synthetic resin layer 2B forms the upper and lower detent surfaces 22 and 22 by covering the steel plate 2A in the longitudinal direction, and forms the fully open stopper 5 by covering the entire hook portion 21A of the steel plate 2A.

The fully open stopper 5 is formed into a vertically long shape by covering the hook portion 21A with the synthetic resin layer 2B. The front surface of the fully open stopper 5, that is, the stopper surface 51 that abuts on the contact surface 64a provided on the case 6 when the door 2 is fully opened, has a central portion in the vertical direction protruding forward in an arc shape in the side view shown in FIG. A first convex arc surface 51a and a second convex arc surface 51b whose central portion in the left-right direction protrudes forward in the plan view shown in FIG. 7 are formed. Preferably, the radius of curvature R1 of the first convex arc surface 51a is formed larger than the radius of curvature R2 of the second convex arc surface 51b.

As shown in FIG. 2, the check unit 3 is fixed to the inner surface of the door D, and the arm 2 is movable in the longitudinal direction through the case 6 made of synthetic resin, and the case 6 is housed in the case 6 to open and close the door D. The upper and lower shoes 7 and 7, which slide on the upper and lower detent surfaces 22 and 2 of the arm 2 along the longitudinal direction according to the operation, and the upper and lower shoes 7 and 7 housed in the case 6, respectively, are above and below the arm 2. The upper and lower compression coil springs 8 and 8 urging toward the detent surfaces 22 and 22, respectively, and the upper and lower shoes 7 and 7 and the upper and lower compression coil springs 8 and 8 are accommodated by being fitted and fixed to the case 6. It has upper and lower lid members 9 and 9 of a metal plate that close the openings to be formed, respectively.

Since the vehicle door check device 1 has a vertically symmetrical structure, in the following description, in order to avoid duplication, the upper and lower shoes 6, 6, the upper and lower compression coil springs 7, 7, and the upper and lower lid members 8 are used. The elements of and 8 are basically described on behalf of the above elements unless there is an explanation to specify the upper and lower elements. Therefore, the lower element shall be understood by replacing the expression "upper" used in the explanation of the upper element with "lower" and "lower" with "upper".

The case 6 is made of synthetic resin and has a substantially quadrangular prism shape in appearance, and is fixed to the door D by two upper and lower bolts 10. The bolt 10 is fixed to the front surface of the case 6, that is, a surface facing the mounting surface of the door D in such a form that the enlarged head 101 of the bolt 10 is embedded (see FIG. 4). Preferably, the bolt 10 is fixed to the case 6 by insert molding.

The case 6 is located in a central portion in the vertical direction, and is located in a body portion 61 forming a through hole 61a penetrating in the front-rear direction so that the arm 2 can penetrate in the longitudinal direction, and in the upper and lower portions of the body portion 61. , And upper and lower accommodating portions 62 for accommodating the shoe 7 and the compression coil spring 8.

The body portion 61 includes upper and lower contact portions 64 having a through hole 61a through which the arm 2 can move in the longitudinal direction and a contact surface 64a that contacts the stopper surface 51 of the fully open stopper 5 when the door D is fully opened. Has.

As shown in FIG. 11, the through hole 61a has a shape in which the opening width in the left-right direction gradually expands from the rear to the front inside the body 61. The left-right opening width of the rear portion of the through hole 61a is set to be slightly larger than the left-right width of the arm 2. Further, the opening shape of the through hole 61a on the rear surface of the body portion 61 has a vertically long rectangular shape as shown in FIG. As a result, it is possible to suppress lateral vibration of the arm 2 in the body portion 61, and it is possible to allow a change in the approach angle of the arm 2 with respect to the through hole 61a due to the opening / closing operation of the door D.

The abutting portion 64 is formed on the rear surface of the body portion 61 in the case 6 and on the upper and lower portions of the through hole 61a, and as can be seen from FIG. 6, the contact portion 64 is rearward of the rear surface of the body portion 61, that is, fully opened. It is formed so as to slightly project toward the stopper surface 51 of the stopper 5. The upper and lower contact portions 64, 64 are integrally formed with the case 6. Preferably, the rear surface of the contact portion 64 is formed in a horizontally long rectangular shape having a width in the left-right direction wider than the opening width in the left-right direction of the through hole 61a and a height smaller than the opening width in the left-right direction.

As can be understood from the plan view shown in FIG. 7, a concave arc-shaped contact surface 64a having a central portion recessed forward in an arc shape is formed on the rear surface of the contact portion 64. The contact surface 64a comes into contact with the stopper surface 51 of the fully open stopper 5 when the door D is fully opened. The fully open stopper 5 regulates the fully open position of the door D by abutting the contact surface 64a of the contact portion 64 with the stopper surface 51. Preferably, the radius of curvature of the contact surface 64a in a plan view is substantially the same as the radius of curvature R2 in a plan view of the stopper surface 51. Further, the radius of curvature of the contact surface 64a in the side view is substantially the same as the radius of curvature R1 in the side view of the stopper surface 51.

When the door D is fully opened, if the contact surface 64a of the contact portion 64 comes into contact with the contact surface 51 of the fully open stopper 5, they come into contact with each other by surface contact. As a result, the surface pressure can be reduced as compared with the line contact, and damage to the fully open stopper 5 and the contact portion 64 can be suppressed. Further, the contact surface 64a has a concave arc shape, the stopper surface 51 has a convex arc shape, and the radius of curvature of the contact surface 64a and the stopper surface 51 in the plan view and the side view are substantially the same. For example, even if the approach angle of the arm 2 with respect to the through hole 61a of the case 6 changes in the left-right direction and / or the up-down direction due to the influence of aging, the contact surface 64a and the stopper surface 51 are always in contact with each other. Allows contact. Further, the rear surface of the contact portion 64, that is, the width of the contact surface 64a in the left-right direction is made wider than the opening width of the through hole 61a in the left-right direction to increase the surface area of the contact surface 64a. The surface pressure when the contact surface 64a comes into contact with the stopper surface 51 is further reduced, so that damage to the contact portion 64 in the fully open stopper 5 and the case 6 can be more effectively suppressed.

The accommodating portion 62 is connected to the upper and lower portions of the body portion 61, and has an accommodating hole 62a penetrating in the vertical direction. As shown in FIG. 4, the accommodating hole 62a intersects the through hole 61a inside the case 6.

A horizontally long hole 63 into which a plate-shaped lid member 9 can be inserted from the rear is provided on the rear surface of the accommodating portion 62 in the case 6. As shown in FIG. 9, the lid member 9 is fitted and fixed to the upper accommodating portion 62 so as to close the upper portion of the upper accommodating hole 62a by being inserted into the horizontally elongated hole 63 of the upper accommodating portion 62. By being inserted into the horizontally long hole 63 of the lower accommodating portion 62, it is fitted and fixed to the lower accommodating portion 62 so as to close the lower portion of the lower accommodating hole 62a. The lid member 9 is inserted into the horizontally elongated hole 63 after accommodating the shoe 7 and the compression coil spring 8 in the accommodating hole 62a of the accommodating portion 62.

As shown in FIG. 10, the accommodating hole 62a has a polygonal hole in a cross-sectional shape, and a pair of anti-rotation ridges 62b facing each other extend in the vertical direction on the inner peripheral surface of the accommodating hole 62a. It is provided.

As can be understood from FIGS. 4 and 9, the shoe 7 is made of a bottomed tubular synthetic resin having an opening at the upper side, and is housed in the housing hole 62a of the case 6 so as to be movable in the vertical direction.

A sliding portion 71 that slides the detent surface 22 of the arm 2 is provided at the lower end of the shoe 7, and an upper portion for accommodating and holding the compression coil spring 8 in the vertical direction is opened inside. A spring accommodating recess 72 is provided.

The sliding portion 71 of the shoe 7 has a mountain shape as shown in the vertical cross-sectional view shown in FIG. 4 so that the detent surface 22 of the arm 2 can slide in a stable state as the door D opens and closes. ..

As shown in FIG. 10, the spring accommodating recess 72 of the shoe 7 has a circular cross-sectional shape, and the outer peripheral surface of the spring accommodating recess 72 has a rotation stop ridge portion 62b provided in the accommodating hole 62a in the case 6. A recess 72 that is non-rotatable in the rotational direction and movably engages in the vertical direction is provided along the vertical direction.

The compression coil spring 8 is held in the spring accommodating recess 72 of the shoe 7 in a compressed state between the shoe 7 and the lid member 9 fixed to the accommodating portion 62, and the sliding portion 71 of the shoe 7 is armed. Bounce toward the detent surface 22 of 2.

Next, the operation of the vehicle door check device 1 according to the present embodiment will be described.
As shown by the alternate long and short dash line in FIG. 3, when the door D is in the closed position, the check unit 3 is in the closed position on the side closer to the front end of the arm 2. When the door D moves from the closed position to the opening direction, the check unit 3 is pressed from the closed position toward the detent surface 22 of the arm 2 by the urging force of the compression coil spring 8 as the door D opens. 7 slides the detent surface 22 of the arm 2 toward the rear to impart resistance to the opening operation of the door D. The arm 2 rotates counterclockwise around the pivot 41 as the door D opens.

Then, as shown by the solid line in FIG. 3, when the door D reaches the fully open position, the contact surface 64a of the contact portion 64 in the case 6 becomes the stopper surface 51 of the fully open stopper 5 integrally provided on the arm 2. Upon contact, further rearward movement of the check unit 3 is prevented, and the check unit 3 and the door D stop at the fully open position. In this case, since the contact surface 64a of the case 6 comes into surface contact with the stopper surface 51 of the fully open stopper 5, one-sided contact can be prevented and the surface pressure can be reduced as compared with the conventional case. Early damage of 5 and case 6 can be suppressed.

When the door D moves from the fully open position to the closing direction, the check unit 3 moves toward the front end of the arm 2 as the door D closes, and the shoe 7 slides the detent surface 22 of the arm 2. It moves forward while moving, and finally stops at the fully closed position. Further, the arm 2 rotates clockwise in FIG. 3 around the pivot 41 with the closing operation of the door D, and rotates to the closed position shown by the chain double-dashed line in FIG.

1 Door check device for vehicles 2 Arm 21 Shaft hole 22 Detent surface 2A Steel plate 21A Hook part 2B Synthetic resin layer 3 Check unit 4 Bracket 41 Pivot 5 Fully open stopper 51 Stopper surface 51a First convex arc surface 51b Second convex arc surface 6 Case 61 Body 61a Through hole 62 Accommodating part 62a Accommodating hole 62b Rotation stop ridge 63 Horizontal hole 64 Abutment 64a Abutment surface 7 Shoe 71 Sliding part 72 Spring accommodating recess 8 Compression coil spring 9 Lid member 10 Bolt 101 Head B Body D Door

Claims (4)

A synthetic resin case fixed to a door that is pivotally supported by the vehicle body, an arm that penetrates a through hole provided in the case and has a front end swingably connected to the vehicle body, and the arm. A fully open stopper provided at the rear end portion and abutting against a contact surface provided on the case to regulate the fully open position of the door, and an arm housed in the case as the door opens and closes. In a vehicle door check device including a shoe that slides on the detent surface of the vehicle and a spring that is housed in the case and urges the shoe toward the detent surface.
The arm is configured by covering the surface of a steel plate with a synthetic resin layer.
The fully open stopper is formed of the synthetic resin layer and has a convex arc shape that protrudes forward in a plan view in an arc shape, and a stopper surface that comes into contact with the contact surface of the case when the door is fully opened. Have and
A vehicle door check device, wherein the contact surface is integrally formed with the case and has a concave arc shape that is recessed forward in a plan view. A contact portion projecting rearward from the rear surface of the case is provided at each of the upper part and the lower part of the through hole in the case.
The vehicle door check device according to claim 1, wherein the contact surface is provided on the rear surface of the contact portion facing the stopper surface of the fully open stopper. The vehicle door check device according to claim 2, wherein the width of the contact portion in the case is made larger than the opening width of the through hole. The stopper surface of the fully open stopper has a convex arc shape that protrudes forward in an arc shape in a side view.
The vehicle door check device according to claim 2 or 3, wherein the contact surface of the contact portion in the case has a concave arc shape that is recessed forward in a side view.

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