JP4216982B2 - Door hinge with checker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door hinge with a checker used in an automobile or the like, and in particular, includes a first hinge arm that has a bifurcated arm portion and is fixed to one of a body and a door, and an insertion arm portion that is inserted into the bifurcated arm portion. A second hinge arm fixed to the other of the body and the door, a hinge pin for connecting the bifurcated arm portion and the insertion arm portion so as to be relatively rotatable, and a first hinge arm provided between the first and second hinge arms. The present invention relates to an improvement of a door hinge with a checker comprising a checker that imparts stepwise moderation resistance to the relative rotation of the hinge arm.
[0002]
[Prior art]
Such a door hinge with a checker is already known as disclosed in, for example, Japanese Patent Application Laid-Open No. 4-136386.
[0003]
[Problems to be solved by the invention]
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, so that a strong set load of the check spring of the checker acts as an offset load on the hinge pin. , It is not preferable for ensuring the durability of the hinge pin.
[0004]
The present invention has been made in view of the mentioned circumstances, and an object thereof is to provide a checker with door hinge that set load of the check spring is not to act as a partial load hinge pin.
[0005]
[Means for Solving the Problems]
To achieve the above object, the present invention provides a first hinge arm having a bifurcated arm portion and fixed to one of the body and the door, and an insertion arm portion inserted into the bifurcated arm portion. And a second hinge arm fixed to the other of the door, a hinge pin for connecting the bifurcated arm portion and the insertion arm portion so as to be capable of relative rotation, and a relative relationship between the hinge arms provided between the first and second hinge arms. In a door hinge with a checker comprising a checker that imparts stepwise moderation resistance to rotation, the checker is provided with a plurality of detent recesses formed on the insertion arm portion and arranged along the relative rotation direction of both hinge arms. and checking cam, pivot the pivotally connected to the boss provided on the first hinge arm and pivotally supports the roller which engages with said check cam tip check with And over arm, and consists of a check spring biasing the check arm to said checking cam side, the check spring, and a pair of coil springs portion which is wound around said pivot protruding on both outer sides of the boss, A rod-shaped portion that extends from each outer end of the coil spring portion and contacts the first hinge arm, and a U-shaped connection that connects the inner ends of the coil spring portions together and contacts the back surface of the check arm. The check spring is provided with a torsional load such that the rod-like portion and the connecting portion exert a repulsive force against the first hinge arm and the check arm. The first feature is that the check arm is urged toward the check cam side with a predetermined set load .
[0006]
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 portion of the hinge pin supported at both ends by the bifurcated arm portion of the first hinge arm, It does not become unbalanced load with respect to the hinge pin, thus with Ru ruggedized hinge pin, it is possible to ensure smooth relative rotation of the two hinge arms.
[0007]
In addition to the first feature, the present invention has a second feature in that the check cam is formed with a slope on which the roller descends from the time immediately before the door is fully closed to the fully closed position.
[0008]
According to the second feature, when the door is rotated from the position immediately before the fully closed position 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. , This moment is added to the operation force to close the door, the door can be closed reliably, and the half door can be avoided as much as possible.
[0009]
In addition to the first or second feature, the present invention provides that the line of action of the pressing force of the check arm against the check cam by the check spring is from the center of the pivot connecting the first hinge arm and the check arm. A third feature is that a moment in the closing direction of the door is applied to the second hinge arm by the pressing force.
[0010]
According to the third feature, when the door is rotated from the position immediately before the fully closed position to the fully closed position, the pressing force of the roller against the inclined surface gives the second hinge arm a moment in the door closing direction. In addition to the operation force to close the door, the door can be closed reliably, and the half-door can be avoided as much as possible.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.
[0012]
1 is a plan view of an automobile equipped with a door hinge with a checker according to the present invention, FIG. 2 is an enlarged plan view of two parts of FIG. 1, FIG. 3 is a view taken along arrow 3 in FIG. 5 is a sectional view taken along line 5-5 of FIG. 4, and FIG. 6 is an exploded perspective view of the door hinge with checker.
[0013]
First, in FIG. 1, FIG. 2 and FIG. 6, a door D for opening and closing its entrance is attached to a body B of an automobile via a door hinge H with a checker according to the present invention. The door hinge H with checker includes a first hinge arm 1 fixed to a body B, a second hinge arm 2 fixed to a door D 2, and a huge head for connecting both the hinge arms 1 and 2 so as to be relatively rotatable. A checker 4 provided between the hinge pin 3 and the hinge arms 1 and 2 and providing stepwise moderation resistance to the relative rotation of the hinge arms 1 and 2 is a constituent element.
[0014]
The first hinge arm 1 includes a flange portion 5 and a bifurcated arm portion 6 erected on one side from one end of the flange portion 5, and a bolt 12 inserted through a mounting hole 11 formed in the flange portion 5. Thus, the flange portion 5 is fixed to the body B. A pair of pin holes 7, 7 arranged coaxially are provided at the tip of the bifurcated arm 6.
[0015]
The second hinge arm 2 includes a flange portion 8 and an insertion arm portion 9 that stands up from the center portion of the flange portion 8, and the flange portion is formed by a bolt 14 inserted into a mounting hole 13 formed in the flange portion 8. 8 is fixed to the door D. The insertion arm portion 9 has a pin hole 10 fitted with a bush 15. The insertion arm portion 9 is placed in the bifurcated arm portion 6 so that the pin hole 10 is aligned with the pair of pin holes 7, 7. Inserted. The first and second hinge arms 1 and 2 are connected so as to be relatively rotatable by inserting the huge pin 3 with the huge head into the three pin holes 7, 10, 7. The tip of the hinge pin 3 is caulked to prevent it from coming off.
[0016]
In the figure, symbol O indicates the door D opening direction, and C indicates the closing direction.
[0017]
The checker 4 is provided with a check cam 20 formed on the outer periphery of the insertion arm portion 9 of the second hinge arm 2 and a roller 22 that can be engaged with the check cam 20 at the tip, and is pivotally supported on the first hinge arm 1. And a check spring 23 that urges the check arm 21 toward the check cam 20 with a predetermined set load.
[0018]
As shown in FIGS. 4 and 6, the check arm 21 has a channel shape having side plates 21 a and 21 a facing each other, and one end of the side plates 21 a and 21 a is a bifurcated arm of the first hinge arm 1. A boss 24 formed at the base of the portion 6 is sandwiched between the boss 24 so as to be rotatable by a pivot 25, and the other end of each side plate 21a, 21a is inserted between the side plates 21a, 21a. The rolled roller 22 is rotatably attached by a roller pin 26.
[0019]
As shown in FIGS. 3 and 6, the pivot shaft 25 includes a stepped pin 27 in which a huge head portion 27a, a large-diameter shaft portion 27b, and a small-diameter shaft portion 27c are connected in order from one end, and the large-diameter shaft portion 27b is disposed outside. The small-diameter shaft portion 27 c is disposed so as to penetrate the side plates 21 a and 21 a and the boss 24 of the check arm 21. At that time, a bush 29 into which the small-diameter shaft portion 27c is rotatably fitted is fitted in the shaft hole 28 of the boss 24.
[0020]
A collar 30 having the same diameter as that of the large-diameter shaft portion 27b is fitted to a portion of the small-diameter shaft portion 27c that protrudes outside the boss 24, and the tip of the small-diameter shaft portion 27c is caulked to prevent the collar 30 from coming off. The pivot 25 is thus configured.
[0021]
The check spring 23 is composed of a single continuous wire, and a portion of the pivot 25 that protrudes on both outer sides of the boss 24, that is, a large diameter shaft portion 27 b and a pair of coil spring portions 23 a wound around the collar 30. , 23a, rod-like portions 23b, 23b extending from the outer ends of the coil spring portions 23a, 23a and coming into contact with the flange portion 5 of the first hinge arm 1, and inner ends of the coil spring portions 23a, 23a Are connected together to form a U-shaped connecting portion 23c that contacts the back surface of the check arm 21. The coil spring portions 23a, 23a are connected to the flange portion 5 and the rod-like portions 23b, 23b and the connecting portion 23c. A predetermined torsional load is applied to the check arm 21 so as to exert a repulsive force. It is biased to the side. At this time, the length of the check arm 21 is set so that the pressing action line P of the roller 22 of the check arm 21 against the check cam 20 comes to the opposite side of the pivot 25 from the center of the hinge pin 3.
[0022]
As clearly shown in FIG. 5, the check cams 20 are alternately arranged along the circumferential direction of the pin hole 10, and a plurality of rollers 22 of the check arm 21 are elastically engaged according to the opening / closing of the door D. With a detent recess. In the illustrated example, when the door D is fully opened, a fully open detent recess 31 with which the roller 22 engages is provided at the outermost position of the check cam 20, and when the door D has an intermediate opening, the intermediate detent recess with which the roller 22 engages. 32 is provided at an intermediate portion of the check cam 20, and when the door D is fully closed, a fully-closed detent recess 33 that is engaged with the roller 22 is provided at an inner position of the check cam 20. In addition, the slope 34 on the intermediate detent recess 32 side of the fully-closed detent recess 33 is formed to be particularly longer than the other slopes, so that the roller 22 moves down this slope 34 while the door D reaches the fully-closed position immediately before the fully-closed position. It has become.
[0023]
Next, the operation of this embodiment will be described.
[0024]
When the door D is opened and closed, the first and second hinge arms 1 and 2 rotate relative to each other with the hinge pin 3 as an axis, and accordingly, the roller 22 of the check arm 21 is engaged with the detent recesses 31 to 33 by the urging force of the check spring 23. Each time the doors D are engaged, a moderation resistance is generated with respect to the rotation of the door D. Therefore, when the detent recesses of the check cam 20 and the roller 22 are engaged, the door D can be securely placed in that position by releasing the opening / closing force on the door D. Can be held in.
[0025]
Incidentally, the strong biasing 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. Since the load is formed on the insertion arm portion 9 of the second hinge arm 2 inserted into the bifurcated arm portion 6 of the first hinge arm 1, the load is applied to the central portion of the hinge pin 3 supported at both ends by the bifurcated arm portion 6. Will not act as an unbalanced load. Therefore, the durability of the hinge pin 3 can be improved, and the smooth relative rotation of the hinge arms 1 and 2 can be ensured.
[0026]
When the door 22 is rotated to the fully closed position from the intermediate opening degree where the roller 22 is engaged with the intermediate detent recess 32 of the check cam 20, first, the roller 22 moves out of the intermediate detent recess 32 and then moves to the slope 34. . At this time, since the inclined surface 34 is lowered toward the fully closed detent recess 33, the component force of the pressing force of the roller 22 against the inclined surface 34 gives a moment in the closing direction of the door D to the second hinge arm 2. In addition to this, since the action line P of the pressing force of the roller 22 against the inclined surface 34 comes to the opposite side of the pivot 25 from the center of the hinge pin 3, the door is also connected 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 applied 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.
[0027]
The present invention is not limited to the above embodiments, and various design changes can be made without departing from the scope of the invention. For example, the first hinge arm 1 can be fixed to the door D and the second hinge arm 2 can be fixed to the body B. The number of detent recesses formed in the check cam 20 can be freely selected.
[0028]
【The invention's effect】
As described above, according to the first feature of the present invention, the first hinge arm having the bifurcated arm portion and fixed to one of the body and the door and the insertion arm portion inserted into the bifurcated arm portion are provided. A second hinge arm fixed to the other of the body and the door, a hinge pin for connecting the bifurcated arm portion and the insertion arm portion to be relatively rotatable, and both hinges provided between the first and second hinge arms. The door hinge with a checker comprising a checker that imparts a stepwise moderation resistance to the relative rotation of the arm, wherein the checker is formed in the insertion arm portion and arranged in a plurality along the relative rotation direction of the two hinge arms. a check cam having a detent recess, the pivot on the boss provided on the first hinge arm are rotatably connected, Choi was journaled a roller which engages with said check cam tip And Kuamu, consist of a check spring biasing the check arm to said checking cam side, the check spring, and a pair of coil springs portion which is wound around said pivot protruding on both outer sides of the boss, these A rod-shaped portion that extends from each outer end of the coil spring portion and contacts the first hinge arm, and a U-shaped connecting portion that connects the inner ends of both coil spring portions together and contacts the back surface of the check arm The check spring is provided with a torsional load such that the rod-like portion and the connecting portion exert a repulsive force against the first hinge arm and the check arm on both coil spring portions. since the check arm to urge with a predetermined set load in the check cam side, Kuwawa from the check arm to check cam The strong urging force of the check spring acts on the central part of the hinge pin supported at both ends by the bifurcated arm part of the first hinge arm, and it does not cause an unbalanced load on the hinge pin. with Ru enhanced, it is possible to ensure smooth relative rotation of the two hinge arms.
[0029]
According to a second aspect of the present invention, the check cam is formed with a slope on which the roller descends from the time immediately before the door is fully closed to the fully closed position. , The component force of the pressing force of the roller against the slope gives a moment in the closing direction of the door to the second hinge arm, and this moment is added to the operating force to close the door, and the door is securely closed. Can avoid half doors as much as possible.
[0030]
According to a third aspect of the present invention, the line of action of the pressing force of the check arm against the check cam by the check spring is deviated 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 applied to the second hinge arm by the pressing force. Therefore, when the door is rotated from immediately before the fully closed position to the fully closed position, the pressing force of the roller against the slope is applied to the second hinge arm. A moment in the closing direction of the door is given, and 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.
[Brief description of the 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 part 2 of FIG.
FIG. 3 is a view taken in the direction of arrow 3 in FIG. 2;
4 is a cross-sectional view taken along line 4-4 of FIG.
5 is a cross-sectional view taken along line 5-5 of FIG.
6 is an exploded perspective view of the door hinge with checker. FIG.
[Explanation of symbols]
B ··· Body D · · · Door H · · · Door hinge P · · · Line of action 1 of the pressing force · · · First hinge arm 2 · · · Second hinge arm 3 · · · · Hinge pin 4 ··· Checker 6 · · · Bifurcated arm portion 9 ··· Insert arm portion 20 · · · Check cam 21 · · · Check arm 22 · · · Roller 23 · · · Check spring
23a ... Coil spring
23b ... Rod-shaped part
23c .. connecting part 25 ... pivot
28 ... Boss 31-33 ... Detent recess 43 ... Slope

Claims (3)

A first hinge arm (1) having a bifurcated arm portion (6) and fixed to one of the body (B) and the door (D), and an insertion arm portion (9) inserted into the bifurcated arm portion (6) ) And the second hinge arm (2) fixed to the other of the body (B) and the door (D), and the bifurcated arm portion (6) and the insertion arm portion (9) are connected so as to be relatively rotatable. And a checker (4) provided between the first and second hinge arms (1, 2) to provide stepwise resistance to the relative rotation of the hinge arms (1, 2). In the door hinge with checker consisting of
The check cam (4) has a plurality of detent recesses (31, 32, 33) formed in the insertion arm portion (9) and arranged along the relative rotational direction of the hinge arms (1, 2). (20) and a roller (22) which is rotatably connected to a boss (28) provided on the first hinge arm (1) by a pivot (25 ) and which engages the check cam (20) at the tip. A check arm (21) that is pivotally supported and a check spring (23) that urges the check arm (21) toward the check cam (20) ,
A pair of coil spring portions (23a, 23a) wound around the pivot (25) projecting outward from both sides of the boss (28), and the coil spring portions (23a, 23a). The check arm is formed by integrally connecting the rod-shaped portions (23b, 23b) extending from the respective outer ends of the two and abutting the first hinge arm (1) and the inner ends of the coil spring portions (23a, 23a). (21) and a U-shaped connecting portion (23c) that contacts the back surface,
The check spring (23) has both coil spring portions (23a, 23a), and the rod-like portions (23b, 23b) and a connecting portion (23c) have the first hinge arm (1) and the check arm (21). A door hinge with a checker, characterized in that the check arm (21) is biased toward the check cam (20) with a predetermined set load by applying a torsional load that exerts a repulsive force .  The door hinge with a checker according to claim 1, wherein the check cam (20) is formed with a slope (34) on which the roller (22) descends from immediately before the door (D) reaches the fully closed position. A door hinge with a checker.  The door hinge with a checker according to claim 1 or 2, wherein an action line (P) of a pressing force of the check arm (21) against the check cam (20) by the check spring (23) is a first hinge arm (1). And the center of the pivot (25) connecting between the check arms (21), and the moment in the closing direction of the door (D) is applied to the second hinge arm (2) by the pressing force. Characterized as a door hinge with checker.

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