JP2001220939A - Door hinge with checker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a set load of a check spring from working as an offset load on a door hinge pin in a door hinge with a checker. SOLUTION: This door hinge is constructed of a first hinge arm 1 provided with a fork-shaped arm part 6 and fixed to a body B, a second hinge arm 2 provided with an insertion arm part 9 to be inserted into the fork-shaped arm part 6 and fixed to the door D, the hinge pin 3 connecting the fork-shaped arm part 6 and the insertion arm part 9 together relatively rotationally, and a checker 4 arranged between the first and second hinge arms 1, 2. The checker 4 is constructed of a check cam 20 having a plurality of detent recess parts 31-33 formed in the insertion arm part 9, a checker arm 21 journalled to the first hinge arm 1 and journaling a roller 22 engaged with the checker cam 20 at the tip, and the check spring 23 energizing the check arm 21 toward the check cam 20 side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door hinge with a checker used for automobiles and the like, and more particularly, to a first hinge arm having a forked arm portion and fixed to one of a body and a door, and a hinge for the forked arm portion. A second hinge arm having an insertion arm portion to be inserted and fixed to the other of the body and the door, a hinge pin connecting the bifurcated arm portion and the insertion arm portion so as to be relatively rotatable, first and second hinges The present invention relates to an improved door hinge with a checker, comprising a checker provided between the arms and providing a stepwise resistance to the relative rotation of the two hinge arms.

[0002]

2. Description of the Related Art Such door hinges with checkers are already known as disclosed in, for example, Japanese Patent Application Laid-Open No. 4-136386.

[0003]

In a conventional door hinge with a checker, the checker is provided between the first and second hinge arms outside one end of the hinge pin. Therefore, it is not preferable in securing the durability of the hinge pin.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a door hinge with a checker in which a set load of a check spring is prevented from acting as an uneven load on a hinge pin.

[0005]

In order to achieve the above object, the present invention provides a first hinge arm which has a forked arm and is fixed to one of a body and a door, and which is inserted into the forked arm. A second hinge arm having an insertion arm portion fixed to the other of the body and the door, a hinge pin connecting the bifurcated arm portion and the insertion arm portion so as to be relatively rotatable, and a first hinge arm between the first and second hinge arms. A door hinge with a checker provided on the insertion arm portion to provide a stepwise resistance to the relative rotation of the two hinge arms. A check cam having a plurality of detent recesses lined up along a line, and a check arm pivotally supported by a first hinge arm and having a tip supported by a roller engaged with the check cam. That the check arm is configured and a check spring biasing the check cam side and the first feature.

According to the first feature, the strong set load of the check spring applied from the check arm to the check cam acts on the center of the hinge pin whose both ends are supported by the forked arm of the first hinge arm. As a result, a bias load is not applied to the hinge pin, so that the durability of the hinge pin can be enhanced, and a smooth relative rotation between the two hinge arms can be ensured.

According to a second feature of the present invention, in addition to the first feature, the check cam has a slope on which the roller descends from immediately before the door is fully closed to a fully closed position. I do.

According to the second feature, when the door is turned from immediately before fully closed to the fully closed position, the component force of the pressing force of the roller against the slope gives the second hinge arm a moment in the door closing direction. In other words, this moment is added to the operation force for closing the door, and the door can be reliably closed, and the half-door can be avoided as much as possible.

Further, according to the present invention, in addition to the first or second feature, the action line of the pressing force of the check arm against the check cam by the check spring is the first.
A third feature is that the hinge is offset from the center of the pivot connecting the hinge arm and the check arm, and a moment in the door closing direction is applied to the second hinge arm by the pressing force.

According to the third feature, when the door is turned from immediately before fully closed to the fully closed position, the pressing force of the roller against the slope gives a moment in the door closing direction to the second hinge arm. This moment is also added to the operation force for closing the door, so that the door can be reliably closed and the half-door can be avoided as much as possible.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

FIG. 1 is a plan view of an automobile provided with a door hinge with a checker according to the present invention, FIG. 2 is an enlarged plan view of a portion 2 of FIG. 1, FIG. 4 is a sectional view taken along line 4-4, FIG. 5 is a sectional view taken along line 5-5 in FIG. 4, and FIG. 6 is an exploded perspective view of the door hinge with a checker.

First, in FIGS. 1, 2 and 6, a door D for opening and closing a door is mounted on a body B of an automobile via a door hinge H with a checker of the present invention. The door hinge H with a checker has a first hinge arm 1 fixed to the body B, a second hinge arm fixed to the door D 2, and an enlarged head for connecting the hinge arms 1 and 2 so as to be relatively rotatable. A checker 4 that is provided between the hinge pin 3 and the hinge arms 1 and 2 and that imparts a stepwise resistance to the relative rotation of the hinge arms 1 and 2 is a constituent element.

The first hinge arm 1 has a flange 5 and
A forked arm 6 is provided on one side from one end of the flange 5, and the flange 5 is fixed to the body B by a bolt 12 inserted into a mounting hole 11 formed in the flange 5. A pair of pin holes 7 are provided coaxially at the tip of the forked arm portion 6.

The second hinge arm 2 has a flange 8 and
Insertion arm 9 standing upright from the center of flange 8
And a mounting hole 1 formed in the flange 8 thereof.
The flange portion 8 is connected to the door D by the bolt 14 inserted through the door D.
To be fixed. The insertion arm 9 has a pin hole 10 in which a bush 15 is fitted. The insertion arm 9 is inserted into the bifurcated arm 6 so that the pin hole 10 is aligned with the pair of pin holes 7. Inserted. The first and second hinge arms 1 and 2 are relatively rotatably connected by fitting the hinge pin 3 with the enlarged head into the three pin holes 7, 10, and 7. The tip of the hinge pin 3 is swaged to prevent it from coming off.

In the drawings, reference symbol O denotes an opening direction of a door D,
Indicates the closing direction.

The checker 4 includes a check cam 20 formed on the outer periphery of the insertion arm 9 of the first hinge arm 1.
A check arm 21 having a roller 22 at its tip end capable of engaging with the check cam 20 and supported by the first hinge arm 1;
And a check spring 23 which urges to a zero side with a predetermined set load.

As shown in FIGS. 4 and 6, the check arm 21 has a channel shape having side plates 21a, 21a opposed to each other, and one end of each of the side plates 21a, 21a is connected to the first hinge arm 1a. Is pivotally connected to the boss 24 by a pivot 25 so as to sandwich the boss 24 formed at the base of the forked arm portion 6.
Rollers 22 inserted between the side plates 21a, 21a are rotatably attached to the other ends of the side plates 21a, 21a by roller pins 26.

As shown in FIGS. 3 and 6, the pivot 25 is
A stepped pin 27 having an enlarged head 27a, a large-diameter shaft 27b, and a small-diameter shaft 27c connected in order from one end is provided.
The small-diameter shaft portion 27c is disposed so as to pass through the side plates 21a, 21a and the boss 24 of the check arm 21 while leaving the outside 7b. At this time, a bush 29 into which the small-diameter shaft portion 27c is rotatably fitted is fitted into the shaft hole 28 of the boss 24.

A collar 30 having the same diameter as the large-diameter shaft portion 27b is fitted to a portion of the small-diameter shaft portion 27c protruding outside the boss 24, and the tip of the small-diameter shaft portion 27c is caulked to prevent the collar 30 from coming off. You. Thus, the pivot 25 is configured.

The check spring 23 is made of a single continuous wire, and the portions of the pivot 25 protruding from both sides of the boss 24, that is, the large-diameter shaft portion 27b and the collar 30.
A pair of coil spring portions 23a, 23a wound around
And bar-shaped portions 23b, 23b extending from the outer ends of the coil spring portions 23a, 23a and abutting on the flange portion 5 of the first hinge arm 1, and both coil spring portions 2a, 2b.
The inner end portions 3a and 23a are integrally connected to each other, and have a U-shaped connecting portion 23c which comes into contact with the back surface of the check arm 21. The coil spring portions 23a and 23a have rod-shaped portions 23b and 23b and A predetermined torsional load is applied so that the connecting portion 23c exerts a repulsive force on the flange portion 5 and the check arm 21, whereby the check arm 21 is urged toward the check cam 20 side. At this time, the pressing action line P of the roller 22 of the check arm 21 against the check cam 20 is shifted from the center of the hinge pin 3.
The length of the check arm 21 is set so as to be on the opposite side to the pivot 25.

As clearly shown in FIG.
Are arranged alternately along the circumferential direction of the pin holes 10 and have a plurality of detent recesses in which the rollers 22 of the check arm 21 resiliently engage with the opening and closing of the door D. In the illustrated example, when the door D is fully opened, a fully opened detent concave portion 31 with which the roller 22 is engaged is provided at the outermost position of the check cam 20. 32 is provided in the middle of the check cam 20, and when the door D is fully closed, a fully closed detent recess 33 with which the roller 22 is engaged is provided inside the check cam 20. Also, the intermediate detent recess 3 of the fully closed detent recess 33
The slopes 34 on the two sides are formed to be particularly longer than the other slopes, and the roller 22 descends from this immediately before the door D is fully closed to the fully closed position.

Next, the operation of this embodiment will be described.

When the door D is opened and closed, the first and second hinge arms 1 and 2 rotate relative to each other about the hinge pin 3, and the rollers 22 of the check arm 21 are biased by the check springs 23 so that the detent recesses 31 to 31 are opened. 33
Each time it engages with the roller, a moderation resistance against the rotation of the door D is generated.
If the opening / closing force on the door D is released during engagement with the door 2, the door D can be reliably held at that position.

By the way, the strong urging force of the check spring 23 applied from the check arm 21 to the check cam 20 acts as a side thrust on the hinge pin 3 connecting the first and second hinge arms 1 and 2, but the check cam Reference numeral 20 denotes a forked arm portion 6 of the first hinge arm 1.
Since the load is formed on the insertion arm portion 9 of the second hinge arm 2 inserted into the hinge pin 2, the load acts on the center portion of the hinge pin 3 whose both ends are supported by the forked arm portion 6, and the uneven load and Not be. Therefore, the durability of the hinge pin 3 can be enhanced, and a smooth relative rotation between the hinge arms 1 and 2 can be ensured.

When the roller 22 rotates the door D from the intermediate opening degree engaged with the intermediate detent concave portion 32 of the check cam 20 to the fully closed position, first, the roller 22 escapes from the intermediate detent concave portion 32, and then the inclined surface is inclined. Move on to 34. At this time, since the slope 34 descends toward the fully closed detent recess 33, the component force of the pressing force of the roller 22 against the slope 34 gives the second hinge arm 2 a moment in the door D closing direction. In addition, since the line of action P of the pressing force of the roller 22 against the slope 34 is located on the side opposite to the pivot 25 from the center of the hinge pin 3, the door hinge is also applied to the second hinge arm 2 by the action of this pressing force. A moment in the closing direction of D is given. Therefore, these moments are added to the operation force in the closing direction of the door D, so that the door D can be reliably closed, and the half door can be avoided as much as possible.

The present invention is not limited to the embodiment described above, and various design changes can be made without departing from the gist of the present invention. For example, the first hinge arm 1 is attached to the door D,
The second hinge arms 2 can be fixed to the body B, respectively. The number of detent recesses formed in the check cam 20 can be freely selected.

[0028]

As described above, according to the first aspect of the present invention, a first hinge arm having a forked arm portion and fixed to one of the body and the door, and inserted into the forked arm portion. A second hinge arm having an insertion arm and fixed to the other of the body and the door, a hinge pin connecting the bifurcated arm and the insertion arm so as to be relatively rotatable,
And a checker provided between the second hinge arm and providing a stepwise resistance to the relative rotation of the two hinge arms, wherein the checker is formed on the insertion arm portion and the two hinges are formed on the insertion arm portion. A check cam having a plurality of detent recesses lined up in the direction of relative rotation of the arm, a check arm pivotally supported by the first hinge arm and having a tip supported by a roller engaged with the check cam; And a check spring that urges the check cam toward the check cam, the strong urging force of the check spring applied to the check cam from the check arm is applied to the center of the hinge pin whose both ends are supported by the forked arm of the first hinge arm. Acting on the hinge pin, there is no eccentric load on the hinge pin. Sex together with enhanced, it is possible to ensure smooth relative rotation of the two hinge arms.

According to a second feature of the present invention, the check cam is formed with a slope on which the roller descends from immediately before the door is fully closed to a fully closed position. When pivoting to the fully closed position, the component force of the pressing force of the roller against the slope gives a moment in the door closing direction to the second hinge arm, and this moment is applied to the door closing operation force, and the door is closed. The door can be closed securely, and the half door can be avoided as much as possible.

According to a third feature of the present invention, the line of action of the check spring against the check cam by the check spring deviates from the center of the pivot connecting the first hinge arm and the check arm. The moment in the closing direction of the door is given to the second hinge arm by the pressing force. Therefore, when the door is turned from immediately before fully closed to the fully closed position, the pressing force of the roller against the slope is reduced to the second hinge arm. A moment in the closing direction of the door is given to the hinge arm, and this moment is added to the operation force for closing the door, so that the door can be reliably closed and the half-door can be avoided as much as possible.

[Brief description of the drawings]

FIG. 1 is a plan view of an automobile provided with a door hinge with a checker of the present invention.

FIG. 2 is an enlarged plan view of two parts in FIG.

FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2;

FIG. 4 is a sectional view taken along line 4-4 of FIG. 2;

FIG. 5 is a sectional view taken along line 5-5 of FIG. 4;

FIG. 6 is an exploded perspective view of the door hinge with a checker.

[Explanation of symbols]

 B: Body D: Door H: Door hinge P: Action line of pressing force 1: First hinge arm 2: Second hinge arm 3: · Hinge pin 4 · · · Checker 6 · · · Bifurcated arm 9 · · · Insertion arm 20 · · · Check cam 21 · · · Check arm 22 · · · Roller 23 · · · Check spring 25 · · ·・ Axis 31-33 ・ ・ ・ Detent recess 43 ・ ・ ・ Slope

Claims (3)

[Claims] 1. A first hinge arm (1) having a forked arm (6) and fixed to one of a body (B) and a door (D), and inserted into the forked arm (6). Body (B) and door (D) having insertion arm (9)
A second hinge arm (2) fixed to the other of the two, a hinge pin (3) for relatively rotatably connecting the forked arm (6) and the insertion arm (9), and first and second hinge arms (1, 2) provided between the two hinge arms (1,
In a door hinge with a checker comprising a checker (4) for imparting a stepwise resistance to the relative rotation of 2),
A check cam having a plurality of detent recesses (31, 32, 33) formed on the insertion arm portion (9) and arranged along the relative rotation direction of the hinge arms (1, 2); (20) a check arm (21) pivotally supported by the first hinge arm (1) and having a roller (22) axially supported at its tip to engage with the check cam (20);
This check arm (21) is connected to the check cam (2).
A door hinge with a checker, characterized by comprising a check spring (23) biased to the 0) side. 2. The door hinge with a checker according to claim 1, wherein the check cam (20) has a door (D).
The roller (22) during a period from immediately before fully closed to a fully closed position of the roller (22).
A door hinge with a checker, characterized in that a slope (34) is formed. 3. A door hinge with a checker according to claim 1, wherein said check cam (2) of said check arm (21) by said check spring (23).
The action line (P) of the pressing force on the door (D) is shifted from the center of the pivot (25) connecting the first hinge arm (1) and the check arm (21). A door hinge with a checker, characterized in that a moment in the closing direction is applied to the second hinge arm (2).