JPWO2017142053A1 - Hinge device - Google Patents

Abstract

In the hinge device, the arm portion of the spring is prevented from coming off from the first arm while ensuring the degree of freedom in designing the second arm. The first main body portion 10 and the second main body portion 20 of the hinge device 3 are rotatably connected by the first arm 30 and the second arm 40. The second main body 20 is urged to rotate with respect to the first main body 10 by the spring 50. On the first side wall 32 of the first arm 30, a spring receiving projection 35 is provided so as to protrude toward the main side wall 12 of the first main body 10. The second main body side arm portion 53 of the spring 50 is pressed against the spring receiving convex portion 35. The second main body side arm 53 is sandwiched between the main side wall 12 and the first side wall 32.

Description

  The present invention relates to a hinge device that rotatably couples a first member such as a housing of a furniture or a room wall of a building and a second member such as a door, and in particular, the second member is connected to one side of the rotation direction (for example, The present invention relates to a hinge device having a catch mechanism for urging it toward the closing side.

  Generally, this type of hinge device includes a first main body portion, a second main body portion, and first and second arms that connect the main body portions. A 1st main-body part is attached to 1st members, such as a housing | casing and a chamber wall. A 2nd main-body part is attached to 2nd members, such as a door. Thus, the second member is rotatably connected to the first member via the hinge device.

  Furthermore, this type of hinge device is provided with a catch mechanism that pulls the second member into the closed position (see Patent Document 1). The catch mechanism of Patent Document 1 includes a spring formed of a torsion coil spring. The first main body portion side arm portion of the spring is pressed against the first main body portion. The second main body side arm of the spring is pressed against the edge of the side wall of the first arm having a U-shaped cross section, and the side wall of the second arm and the side wall of the first main body having a U-shaped cross section. It is sandwiched between. When the second member is close to the closed position, the first arm is urged to rotate by the spring force of the spring, whereby the second member is urged to the closed position.

Japanese Patent No. 4657812

In the above-mentioned Patent Document 1, by arranging the side wall of the second arm so as to face the side wall of the first main body part, and sandwiching the second main body side arm part of the spring between these side walls, The second main body side arm portion is structured to prevent the second main body side arm portion from being detached from the side wall of the first arm. In short, since the second arm of Patent Document 1 needs to be involved in preventing the second main body side arm portion of the spring from coming off, there are restrictions on the shape, dimensions, arrangement, and the like, and the degree of freedom in design is small.
In view of the above circumstances, an object of the present invention is to prevent the second body portion side arm portion of a spring such as a torsion coil spring from coming off from the first arm while ensuring the degree of freedom in designing the second arm. To do.

The present invention has been made to solve the above problems, and is a hinge device that connects a first member and a second member so as to be rotatable about an axis,
A first body portion having a main side wall perpendicular to the axis and attached to the first member;
A second main body attached to the second member;
A first side wall opposed to the main side wall, wherein one end of the first side wall is rotatably connected to the first main body, and the other end of the first side wall is connected to the second main body; A first arm rotatably coupled to the first arm;
A second arm having one end rotatably connected to the first main body and the other end rotatably connected to the second main body;
A spring having a first body part side arm part and a second body part side arm part, and rotating and urging the second body part with respect to the first body part,
The first side wall is provided with a spring receiving projection protruding toward the main side wall,
When the second body portion side arm portion of the spring is pressed against the spring receiving convex portion, the rotational biasing force of the spring acts on the second body portion via the first arm, The second main body side arm is sandwiched between the main side wall and the first side wall.
By sandwiching the second main body portion side arm portion of the spring between the main side wall of the first main body portion and the first side wall of the first arm, the second main body portion side arm portion is detached from the spring receiving convex portion. Can be prevented. Since the second arm is not involved in preventing the second main body side arm from coming off, the degree of freedom in design can be increased.

The main side walls are respectively provided on both sides in the axial direction of the first main body,
The first side walls are respectively provided on both sides of the first arm in the axial direction;
The spring has a pair of coil spring parts arranged in the axial direction, and the second body part side arm part is provided at each of the opposite ends of the coil spring parts,
Each of the second main body side arms is preferably pressed against the spring receiving convex portion of the corresponding first side wall and sandwiched between the corresponding main side wall and the first side wall.
As a result, the first arm and thus the second main body can be urged to rotate in a well-balanced manner.

On the outer periphery of the spring receiving convex portion, a rolling element is rotatably provided,
It is preferable that the second main body side arm is pressed against the outer peripheral surface of the rolling element.
In this case, the second main body portion side arm portion is pressed against the spring receiving convex portion via the rolling element. As the second body portion rotates, the spring receiving convex portion and the second body portion side arm portion are relatively displaced. At this time, rolling friction acts between the rolling element and the second main body side arm portion by the relative rotation of the rolling element around the spring receiving convex portion. As a result, wear of the spring receiving projection and the second main body side arm can be reduced, and durability can be increased.

  According to the present invention, restrictions on the shape and arrangement of the second arm can be eliminated, and the degree of freedom in designing the second arm can be increased. And it can prevent that the 2nd main-body-part side arm part of a spring remove | deviates from a 1st arm.

FIG. 1A is a partially cutaway plan view showing the hinge device according to the first embodiment of the present invention in a closed state and the first member and the second member as imaginary lines. FIG.1 (b) is a top view which shows the said hinge apparatus in an open state, and makes the 1st member and the 2nd member an imaginary line. Fig.2 (a) is a side view of the said hinge apparatus of a closed state which follows the IIa-IIa line | wire of Fig.1 (a). FIG. 2B is a side view showing the hinge device in the open state along the line IIb-IIb in FIG. FIG. 3 is a perspective view of the hinge body. FIG. 4 is an exploded perspective view of the hinge body. FIG. 5A is a plan cross-sectional view of the hinge device in the closed state along the Va-Va line in FIG. FIG. 5B is a plan cross-sectional view of the hinge body in the open state along the line Vb-Vb in FIG. Fig.6 (a) is front sectional drawing of the said hinge apparatus of a closed state which follows the VIa-VIa line | wire of Fig.1 (a). FIG. 6B is a plan sectional view of the hinge body in the open state along the line VIb-VIb in FIG. Fig.7 (a) is sectional drawing which follows the VIIa-VIIa line | wire of FIG.1 (b). FIG.7 (b) is sectional drawing which follows the VIIb-VIIb line | wire of FIG.1 (b). Fig.8 (a) is an expanded sectional view of the circle part VIIIa of Fig.6 (a). FIG. 8B is an enlarged cross-sectional view of the circle VIIIb in FIG. FIG. 9 is an exploded perspective view of the hinge body of the hinge device according to the second embodiment of the present invention. FIG. 10 is an enlarged cross-sectional view corresponding to FIG. 8B of the hinge device according to the second embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 8 show a first embodiment of the present invention. As shown in FIG. 1, the first member 1 and the second member 2 are connected via a hinge device 3 so as to be rotatable about an axis perpendicular to the paper surface of FIG. 1. Hereinafter, the direction along the axis is referred to as “axis direction DR ₁ ”. The first member 1 is, for example, a furniture casing or a room wall of a building. The second member 2 is, for example, furniture or a room door.

  As shown in FIG. 1, the hinge device 3 includes a hinge body 3a and a washer 3b. A washer 3 b is attached to the first member 1. The hinge main body 3 a includes a first main body portion 10, a second main body portion 20, a first arm 30, and a second arm 40. The 1st main-body part 10 is attached to the washer 3b. As a result, the 1st main-body part 10 is attached to the 1st member 1 via the washer 3b. The second main body portion 20 is attached to the second member 2. As shown in FIG. 5, the first main body 10 and the second main body 20 are connected via the first arm 30 and the second arm 40. These main body portions 10 and 20 and arms 30 and 40 constitute a four-bar linkage mechanism.

Specifically, as shown in FIGS. 2 and 3, the first main body portion 10 has a main surface wall 11 and a pair of main side walls 12 and 12. The longitudinal direction of the main surface wall 11 is directed to a second direction DR ₂ orthogonal to the axial direction DR ₁ , and the width direction of the main surface wall 11 is directed to the axial direction DR ₁ . Main side walls 12 are provided on both sides of the main surface wall 11 in the width direction. Each major lateral walls 12 are perpendicular to the axis direction DR _1. As shown in FIG. 6B, the pair of main side walls 12 and 12 protrude from the main surface wall 11 to one side in the third direction DR ₃ orthogonal to the axial direction DR ₁ and the second direction DR ₂ . . The cross section orthogonal to the longitudinal direction of the first main body 10 is U-shaped.

As shown in FIGS. 1 and 3, shaft pin members 61, 63, 66 are provided at one end side in the longitudinal direction of the first main body 10 (left side in FIG. 1B). As shown in FIG. 2B, these shaft pin members 61, 63, 66 are parallel to each other and extend in the width direction (axis direction DR ₁ ) of the first main body portion 10. The shaft pin members 61, 63, 66 are bridged between the pair of main side walls 12, 12 of the first main body 10.

  As shown in FIGS. 1 and 3, the second main body portion 20 is provided on one end side in the longitudinal direction of the first main body portion 10 (left side in FIG. 1). The second main body portion 20 has a mounting plate portion 21 and a cup portion 22. The mounting plate portion 21 is formed in a flat plate shape and is fixed to the second member 2. A cup portion 22 is provided in the central portion of the mounting plate portion 21.

As shown in FIG. 7, the cup portion 22 is provided with two J pin members 62 and 64. As shown in FIGS. 4 and 7A, the J pin member 62 includes a short shaft portion 62a, a long shaft portion 62b, and a shaft connecting portion 62c. The shaft length of the short shaft portion 62a is shorter than the shaft length of the long shaft portion 62b. Minor portions 62a and long axis portion 62b is in parallel with one another, and extend in the axial direction DR _1. One end portions of the short shaft portion 62a and the long shaft portion 62b are connected by a shaft connecting portion 62c.

As shown in FIG. 7A, the shaft coupling portion 62c is disposed on the outer surface of the side wall portion 22a on one side (lower side in FIG. 7A) of the cup portion 22. The short shaft part 62 a protrudes into the cup part 22 through the side wall part 22 a. Major axis portion 62b is bridged from the side wall 22a of the cup portion 22 to the side wall 22b on the opposite side in the axial direction DR ₁ (upper side in FIG. 7 (a)).

  As shown in FIGS. 4 and 7B, similarly, another J pin member 64 includes a short short shaft portion 64a, a long long shaft portion 64b, and a shaft connecting portion that connects these shaft portions 64a and 64b. 64c is included. The shaft connecting portion 64 c is disposed on the outer surface of the side wall portion 22 b of the cup portion 22. The short shaft portion 64 a protrudes into the cup portion 22 through the side wall portion 22 b. The long shaft portion 64b extends from the side wall portion 22b in the cup portion 22 to the side wall portion 22a.

As shown in FIG. 7, the short axis portion 62a of the two J-pin members 62 and 64, and what 64a is disposed so as to face in a straight line along the axial direction DR _1. FIGS. 5 (b) and 5, as shown in FIG. 7 (a), the long axis portion 62b of the two J-pin members 62 and 64, and what 64b is left in the direction (FIGS. 7 (a) perpendicular to the axial direction DR ₁ Direction and / or depth direction of the paper).

As shown in FIGS. 3 and 5B, the first arm 30 is bridged between the first main body 10 and the second main body 20. As shown in FIG. 4, the first arm 30 has a first front wall 31 and a pair of first side walls 32, 32. The width direction of the first table wall 31 are directed in the axial direction DR _1. First side walls 32 are provided on both sides of the first front wall 31 in the width direction. The first side wall 32 is substantially orthogonal to the first front wall 31. A cross section perpendicular to the longitudinal direction of the first arm 30 is substantially U-shaped.

As shown in FIGS. 3 and 6, the width of the first arm 30 (the dimension along the axial direction DR ₁ ) is smaller than the width of the first main body 10. The end of the first arm 30 on the first body portion 10 side is inserted into the first body portion 10. As shown in FIG. 6 (b), the first body portion 10 and the first arm 30, together sidewalls 12, 32 (corresponding side wall) of the same side in the axial direction DR ₁ How to but axially spaced narrow gap It faces the DR _1.

  As shown in FIG. 2B and FIG. 5A, the shaft pin member 61 has an end (one end) on the first main body 10 side in the pair of first side walls 32, 32 of the first arm 30. It penetrates. The first arm 30 is connected to the first main body portion 10 via the shaft pin member 61 so as to be rotatable around an axis (first axis) of the shaft pin member 61.

  As shown in FIG. 3, the end of the first arm 30 on the second body portion 20 side is disposed inside the cup portion 22. As shown in FIG. 7, the short shaft portions 62 a and 64 a of the two J pin members 62 and 64 are the end portions (the other end) of the pair of first side walls 32 and 32 of the first arm 30 on the second main body portion 20 side. Part). The first arm 30 is connected to the second main body portion 20 via the short shaft portions 62a and 64a so as to be rotatable around the axis (second axis) of the short shaft portions 62a and 64a.

As shown in FIG. 2B, the second arm 40 is disposed at the center in the width direction between the main body portions 10 and 20. The second arm 40 is bridged from the first main body 10 to the second main body 20. As shown in FIGS. 4 and 5, the second arm 40 has a substantially “<”-shaped flat plate shape when viewed from the axial direction DR ₁ (the direction orthogonal to the paper surface in FIG. 5). Two second arms 40, 40 are stacked in the axial direction DR _1. Thereby, the strength of the second arm 40 is ensured. Note that the number of the second arms 40 is not limited to two, and may be one or three or more.

  As shown in FIG. 5, the shaft pin member 63 passes through an end portion (one end portion) of the second arm 40 on the first main body portion 10 side. The second arm 40 is connected to the first main body portion 10 via the shaft pin member 63 so as to be rotatable around the axis (third axis) of the shaft pin member 63.

  As shown in FIG. 7A, the long shaft portion 62 b of the J pin member 62 passes through the end portion (the other end portion) of the second arm 40 on the second main body portion 20 side. The second arm 40 is connected to the second main body portion 20 via the long shaft portion 62b so as to be rotatable around the axis (fourth axis) of the long shaft portion 62b.

As shown in FIG. 2B, a movable space for the second arm 40 is secured between the two short shaft portions 62 a and 64 a of the J pin members 62 and 64.
As shown in FIG. 5B, the long shaft portion 64 b of the J pin member 64 is disposed at a corner portion that does not interfere with the arms 30 and 40 in the cup portion 22.

  As shown in FIGS. 5 and 6, the hinge device 3 further includes a catch mechanism 5 that pulls the second member 2 into the closed position. The catch mechanism 5 includes a torsion coil spring 50 (spring) and a spring receiving projection 35. As shown in FIG. 4, the torsion coil spring 50 includes a pair of coil spring portions 51, 51, an intermediate arm portion 52 (first body portion side arm portion), and a pair of end arm portions 53, 53 (second body portion). Part side arm part).

A pair of coil springs 51, 51 are arranged in series on a straight line along the axis direction DR _1. These coil spring portions 51, 51 are connected by an intermediate arm portion 52. The intermediate arm portion 52 is formed in a U shape and extends from the coil spring portion 51 along one tangential direction of the coil spring portion 51. Both end portions of the intermediate arm portion 52 are connected to opposite end portions of the coil spring portions 51 and 51, respectively.

  As shown in FIG. 4, end arm portions 53 are provided at the opposite ends of the coil spring portions 51, 51. The pair of end arm portions 53, 53 are parallel to each other and extend from the coil spring portion 51 in the direction opposite to the intermediate arm portion 52 along one tangential direction of the coil spring portion 51.

  As shown in FIG. 2B, the second arm 40 is disposed between the coil spring portions 51, 51 and inside the U-shaped intermediate arm portion 52. A shaft pin member 63 that passes through the second arm 40 also passes through the coil spring portions 51 and 51. As shown in FIG. 1A, a resin sleeve 65 is provided between the inner periphery of the coil spring portion 51 and the outer periphery of the shaft pin member 63. The resin sleeve 65 can prevent the shaft pin member 63 and the coil spring portion 51 from being worn.

As shown in FIG. 5, the distal end portion of the intermediate arm portion 52 is pressed against the shaft pin member 66. As a result, the intermediate arm portion 52 is indirectly pressed against the first main body portion 10 via the shaft pin member 66. The intermediate arm portion 52 may be pressed directly against the first main body portion 10.
As shown in FIG. 5A, the shaft pin member 66 also functions as a fitting portion with the washer 3 b in the first main body portion 10.

As shown in FIG. 5A and FIG. 6, spring receiving convex portions 35 are respectively provided at the end portions (one end portions) on the first main body portion 10 side of the pair of first side walls 32, 32 of the first arm 30. Is provided. The spring receiving projection 35 is disposed slightly away from the shaft pin member 61. As shown in FIGS. 4 and 8, the spring receiving projection 35 has a cylindrical shape and projects from the outer surface of the first side wall 32 toward the corresponding main side wall 12. The protruding end surface of the spring receiving projection 35 is close to the corresponding main side wall 12. As shown in FIG. 8A, the gap g ₁ between the projecting end surface of the spring receiving projection 35 and the corresponding main side wall 12 is sufficiently larger than the thickness φ ₅₃ of the torsion coil spring 50 end arm portion 53. (G ₁ <φ ₅₃ ). Projecting amount _{h 35} from the first side wall 32 of the spring receiving projection 35 is substantially equal to the thickness phi ₅₃ of the torsion coil spring 50 Tan'ude section _{53 (h 35 ≒ φ 53)} .

  As shown in FIGS. 1 and 6, each end arm portion 53 of the torsion coil spring 50 is elastically pressed against the outer peripheral surface of the corresponding spring receiving convex portion 35. Further, each end arm portion 53 is sandwiched between the corresponding main side wall 12 and the first side wall 32.

Specifically, as shown in FIG. 8B, each first side wall 32 of the first arm 30 has a locking wall portion 32a. The locking wall portion 32a protrudes from the spring receiving convex portion 35 to the side where the end arm portion 53 is disposed (lower side in FIG. 8B). The end arm portion 53 is locked to the locking wall portion 32a. In addition, a portion of the end arm portion 53 on the side opposite to the locking wall portion 32 a is in contact with the main side wall 12.
The protrusion amount h _32a of the locking wall portion 32a from the spring receiving convex portion 35 is smaller than the thickness of the end arm portion 53 (h _32a <φ ₅₃ ). Since the end arm portion 53 is biased toward the spring receiving convex portion 35 (upward in FIG. 8B), the end arm portion 53 does not move along the axis even if the protruding amount of the locking wall portion 32a is small. Displacement to the inside of the direction DR ₁ (left side in FIG. 8B) can be sufficiently prevented.

  As shown in FIG. 5A, the tip end portion 53e of the end arm portion 53 extends to the side opposite to the coil spring portion 51 side (left side in FIG. 5A) with respect to the spring receiving convex portion 35. . As shown in FIGS. 5A and 6A, the distal end portion 53e of the end arm portion 53 is located on the second axis side, that is, on the short shaft portions 62a and 64a side of the spring receiving projection 35 on the first side wall 32. It is sandwiched between the main side wall 12 and the portion (the front side in FIG. 6A).

  When the intermediate arm portion 52 is pressed against the shaft pin member 66 and the end arm portion 53 is pressed against the spring receiving convex portion 35, the torsion coil spring 50 is against the first main body portion 10. The rotation is energized. As a result, the 2nd main-body part 20 is rotationally biased via the 1st arm 30, and also the 2nd member 2 is rotationally biased. When the second member 2 is near the closed position, the rotational biasing force acts in the closing direction of the second member 2. Accordingly, the second member 2 can be pulled into the closed position, and the second member 2 can be prevented from staying in a slightly opened state. Alternatively, the second member 2 can be stably held in the closed position. The pair of end arm portions 53, 53 of the torsion coil spring 50 are pressed against the corresponding spring receiving projections 35, respectively, so that the first arm 30 and thus the second main body portion 20 can be urged to rotate in a balanced manner.

According to the hinge device 3, the end arm portion 53 of the torsion coil spring 50 is sandwiched between the side walls 12 and 32, thereby preventing the end arm portion 53 from coming off from the spring receiving projection 35. The pair of end arm portions 53, 53 of the torsion coil spring 50 are sandwiched between the corresponding side walls 12, 32, respectively, so that the arm portions 53, 53 can be prevented from coming off from the spring receiving projection 35.
In addition, the second arm 40 is not involved in preventing the end arm portion 53 from coming off. Therefore, restrictions on the shape and size of the second arm 40 can be eliminated, and the degree of freedom in designing the second arm 40 can be increased.

Next, another embodiment of the present invention will be described. In the following embodiments, the same reference numerals are attached to the drawings for the same configurations as those already described, and the description thereof is omitted as appropriate.
9 and 10 show a second embodiment of the present invention. A rolling element 34 is provided on the outer periphery of each spring receiving projection 35 in the second embodiment. The rolling elements 34 are rotatable about an axis along the axis direction DR ₁ in the spring receiving projection 35. The end arm portion 53 is pressed against the outer peripheral surface of the rolling element 34. As a result, the end arm portion 53 is pressed against the spring receiving convex portion 35 via the rolling element 34.

As the second member 2 (see FIG. 1) is opened and closed, the spring receiving convex portion 35 is relatively displaced along the extending direction of the end arm portion 53. At this time, rolling friction acts between the end arm portion 53 and the rolling element 34 by rotating the rolling element 34. As a result, the durability can be improved by suppressing the wear of the spring receiving convex portion 35 and the end arm portion 53.
Incidentally, in the first embodiment (FIGS. 1 to 8), sliding friction acts between the spring receiving convex portion 35 and the end arm portion 53.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention.
For example, the shape of the second arm 40 may be a U-shaped cross section instead of a flat plate shape.
The torsion coil spring 50 may be separable at the intermediate arm portion 52. That is, when the intermediate arm portion 52 is divided into two, the coil spring portions 51 and 51 may be separable (separate) from each other.
The spring of the catch mechanism 5 is not limited to the torsion coil spring 50, and may be a leaf spring or the like.

  The present invention can be applied to, for example, furniture opening / closing doors and hinges of room doors.

DR ₁ axial direction 1 first member 2 second member 3 hinge device 3a hinge body 5 catch mechanism 10 first body portion 11 main surface wall 12 main side wall 20 second body portion 30 first arm 31 first surface wall 32 first Side wall 34 Rolling element 35 Spring receiving projection 40 Second arm 50 Torsion coil spring (spring)
51 Coil spring portion 52 Intermediate arm portion (first main body side arm portion)
53 End arm part (second body part side arm part)

Claims (3)

A hinge device for connecting the first member and the second member so as to be rotatable about an axis,
A first body portion having a main side wall perpendicular to the axis and attached to the first member;
A second main body attached to the second member;
A first side wall opposed to the main side wall, wherein one end of the first side wall is rotatably connected to the first main body, and the other end of the first side wall is connected to the second main body; A first arm rotatably coupled to the first arm;
A second arm having one end rotatably connected to the first main body and the other end rotatably connected to the second main body;
A spring having a first body part side arm part and a second body part side arm part, and rotating and urging the second body part with respect to the first body part,
The first side wall is provided with a spring receiving projection protruding toward the main side wall,
When the second body portion side arm portion of the spring is pressed against the spring receiving convex portion, the rotational biasing force of the spring acts on the second body portion via the first arm, And the said 2nd main-body-part side arm part is pinched | interposed between the said main side wall and the said 1st side wall, The hinge apparatus characterized by the above-mentioned. The main side walls are respectively provided on both sides in the axial direction of the first main body,
The first side walls are respectively provided on both sides of the first arm in the axial direction;
The spring has a pair of coil spring parts arranged in the axial direction, and the second body part side arm part is provided at each of the opposite ends of the coil spring parts,
2. Each of the second main body portion side arm portions is pressed against a spring receiving convex portion of a corresponding first side wall, and is sandwiched between a corresponding main side wall and the first side wall. The hinge apparatus as described in. On the outer periphery of the spring receiving convex portion, a rolling element is rotatably provided,
The hinge device according to claim 1 or 2, wherein the second main body side arm portion is pressed against an outer peripheral surface of the rolling element.

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