JPWO2013031816A1 - Hinge device - Google Patents

Abstract

  One projecting portion 72 of the torsion coil spring 7 is abutted against the side plate portion 41 of the inner link 4. The other protrusion 73 of the torsion coil spring 7 is abutted against the side plate portion 42 of the outer link 5. About the protrusion part 72, it abuts on the side plate part 41 via the cam member 91. A cam surface 91 a that abuts against the side plate portion 41 is formed on the cam member 91.

Description

  The present invention relates to a hinge device provided with a torsion coil spring as rotation urging means.

  In general, the hinge device includes a housing-side mounting member that is attached to the housing and a door-side mounting member that is attached to the door. It is connected rotatably. As a result, the door is rotatably supported by the housing via the hinge device.

  Moreover, the hinge apparatus has a torsion coil spring as described in Patent Document 1 below. The torsion coil spring has a coil portion formed by winding a wire, and first and second projecting portions provided at both ends of the coil portion. The first projecting portion abuts against the first link and is urged to rotate. On the other hand, the second projecting portion abuts against the housing-side mounting member or abuts against the second link to urge the rotation. In any case, the first link is rotationally biased by the first protrusion, and the door-side mounting member and the door are rotationally biased.

JP-A-6-323055

  The first projecting portion normally extends linearly toward the tangential direction of the coil portion. When the first link is rotationally biased by the linear first protrusion, the rotational biasing mode for the first link, that is, the relationship between the rotational position of the first link and the rotational biasing force for the first link is desired. There was a problem that it was difficult to make it into an embodiment.

The present invention has been made to solve the above problems, and includes a housing-side mounting member, first and second links having one end rotatably connected to the housing-side mounting member, and the first and second links. A door-side mounting member rotatably connected to the other end of the second link, and a torsion spring that urges the first link to rotate, thereby rotating the door-side mounting member relative to the housing-side mounting member. And a projecting portion projecting radially outward at one end portion of the torsion spring, wherein the projecting portion abuts against the first link to rotate and bias the first link. A cam member formed separately from this is mounted so as to rotate integrally with the projection around the axis of the torsion spring, and the projection is connected to the first link via the cam member. Butt up The cam member is characterized by a cam surface which abuts on the first link is formed.
In this case, a second projecting portion projecting radially outward is formed at the other end of the torsion spring, and the second projecting portion abuts against the second link, so that the second link is on the door side. It is desirable that the second protrusion urges the second link to rotate the attachment member in the same direction as the first link.
The torsion spring is a torsion coil spring made of a metal wire, and the torsion coil spring protrudes from the coil part wound around the wire and the radially outer side of the coil part from both ends of the coil part. It is desirable to have the said protrusion part and a 2nd protrusion part, and the said protrusion part and the 2nd protrusion part are comprised by the both ends of the said wire.
The housing-side mounting member is provided with a support shaft that is inserted through the coil portion of the torsion coil spring, and the cam member is provided with a cylindrical portion through which one end of the support shaft is inserted. Is preferably fitted to one end of the coil portion so as to be relatively rotatable with a gap.
On the other end side of the coil portion of the torsion coil spring, a inserted member into which the other end portion of the support shaft is inserted is provided, and the other end portion of the support shaft is inserted into the inserted member. It is desirable that a second cylinder portion is provided, and the second cylinder portion is fitted to the other end portion of the coil portion so as to be relatively rotatable with a gap.
It is desirable that the inserted member is engaged with the second protruding portion so as to rotate integrally with the second protruding portion around the axis of the coil portion.

  According to the present invention having the above-described characteristic configuration, the cam surface of the cam member that abuts on the first link is formed in an appropriate shape, so that the rotational biasing mode for the first link by the torsion coil spring, that is, the rotation of the first link The relationship between the position and the rotational biasing force applied to the first link by the torsion coil spring can be set to a desired relationship.

FIG. 1 is a plan view showing a first embodiment of the present invention in a state where a door side mounting member is rotated to an open position. FIG. 2 is a view taken in the direction of arrow X in FIG. 3 is a view taken in the direction of arrow Y in FIG. FIG. 4 is a view taken in the direction of arrow Z in FIG. FIG. 5 is a perspective view showing the embodiment with the door-side attachment member rotated to the open position. FIG. 6 is an exploded perspective view showing a base portion and a housing side attachment member of the same embodiment. FIG. 7 is an exploded perspective view showing the housing-side mounting member, the door-side mounting member, and each member provided between them according to the embodiment. FIG. 8 is an enlarged cross-sectional view taken along the line AA in FIG. FIG. 9 is a view similar to FIG. 8 showing the door-side mounting member rotated to an intermediate position between the closed position and the open position. FIG. 10 is a view similar to FIG. 8 showing the door-side attachment member rotated in the closed position. FIG. 11 is a partially omitted cross-sectional view taken along line BB in FIG. FIG. 12 is a cross-sectional view similar to FIG. 11, showing the door-side mounting member rotated to an intermediate position. FIG. 13 is a cross-sectional view similar to FIG. 11, showing the door-side attachment member rotated to the closed position. 14 is a partially omitted cross-sectional view taken along the line CC of FIG. FIG. 15 is a cross-sectional view similar to FIG. 14, showing the door-side mounting member rotated to an intermediate position. FIG. 16 is a cross-sectional view similar to FIG. 14 showing the door-side attachment member rotated to the closed position. 17 is a cross-sectional view taken along line AA in FIG. FIG. 18 is an enlarged view of a main part of FIG. FIG. 19 is a side view of a rotary damper used in the same embodiment. FIG. 20 is a right side view of the rotary damper. FIG. 21 is a perspective view of the rotary damper. FIG. 22 is a cross-sectional view taken along the line XX of FIG. 19 showing the same rotary damper when the rotor is rotating closed. FIG. 23 is a cross-sectional view similar to FIG. 22, showing the rotating damper in a state where the rotor is rotating open. 24 is a cross-sectional view taken along the line XX in FIG. 22, showing a state where the damper main body is located at the first position. 25 is a cross-sectional view taken along the line XX of FIG. 23, showing a state where the damper main body is located at the first position. FIG. 26 is a cross-sectional view taken along the line XX of FIG. 22 shown in a state where the damper main body is located at the second position. FIG. 27 is a cross-sectional view taken along line YY of FIG. 22 shown in a state where the damper main body is located at the first position. FIG. 28 is a cross-sectional view taken along line YY of FIG. 22 in a state where the damper main body is located at the second position. FIG. 29 is an enlarged view of a main part of FIG. FIG. 30 is a cross-sectional view similar to FIG. 8 illustrating a second embodiment of the hinge device with a damper according to the present invention in a state where the door-side mounting member is located at the closed position. FIG. 31 is a cross-sectional view similar to FIG. 8 showing the second embodiment in a state where the door-side mounting member is located at a predetermined first intermediate position. FIG. 32 is a cross-sectional view similar to FIG. 8 showing the second embodiment in a state where the door-side mounting member is located at a predetermined second intermediate position. FIG. 33 is a cross-sectional view similar to FIG. 8 showing the second embodiment in a state where the door-side mounting member is located at the open position. FIG. 34 is a perspective view showing another example of a torsion spring used in the present invention. FIG. 35 is an exploded perspective view showing a third embodiment of the present invention. FIG. 36 is an exploded perspective view of the third embodiment viewed from a direction different from FIG. FIG. 37 is a cross-sectional view similar to FIG. 18, showing the main part of the same embodiment. FIG. 38 is a perspective view showing an outer link used in the embodiment. FIG. 39 is an exploded perspective view showing the fourth embodiment of the present invention. FIG. 40 is a plan view of a hinge body used in the fourth embodiment. 41 is a sectional view taken along line XX in FIG. FIG. 42 is a perspective view of the hinge body. FIG. 43 is a plan view showing the hinge body with a torsion coil spring attached. 44 is a cross-sectional view taken along the line XX of FIG. 45 is a YY cross-sectional view of FIG. 46 is a cross-sectional view similar to FIG. 44, showing the hinge body with the inner and outer links attached thereto. 47 is a cross-sectional view similar to FIG. 45, showing the hinge body with the inner and outer links attached thereto.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 to 29 show a first embodiment of the present invention. As shown in FIGS. 1 to 8, the hinge device 1 according to this embodiment includes a base 2, a hinge body (housing side mounting member) 3, an inner link (first link) 4, and an outer link (second link) 5. The cup member (door-side mounting member) 6, the torsion coil spring (torsion spring) 7 and the rotary damper 8 are the main components.

  The base 2 is for detachably attaching the hinge body 3 to the inner surface of the side wall of a housing (not shown) whose front is open, and has a base plate 21 and a movable plate 22. The base plate 21 is attached to the front end portion of the inner surface of the left wall portion of the housing, that is, the end portion on the opening side. The base plate 21 may be attached to the front end portion of the inner surface of the right wall portion of the housing. In the following, for convenience of explanation, the configuration of the hinge device 1 will be described using front, rear, left, right, and top and bottom of the housing. The front, rear, left, right, and top and bottom of the housing are as shown in FIGS. Of course, the hinge apparatus 1 is not limited to such front and rear, right and left and up and down.

The movable plate 22 is attached to the base plate 21 so that its position can be adjusted in the front-rear direction and the vertical direction. When the adjustment shaft 23 is rotated, the position of the movable plate 22 is adjusted in the front-rear direction, and when the adjustment shaft 24 is rotated, the position of the movable plate 22 is adjusted in the vertical direction. Further, when the adjustment bolt 25 is rotated, the position of the front end portion of the movable plate 22 is adjusted in the left-right direction.

An engaging recess 22 a is formed at the front end of the movable plate 22. The engaging recess 22a is opened forward. An engagement shaft 22b is fixed to the rear end portion of the movable plate 22 with its longitudinal direction directed in the vertical direction.

As shown in FIGS. 6 to 8, the hinge body 3 has a pair of side plate portions 31 and 32 and a connecting plate portion 33. The pair of side plate portions 31 and 32 are disposed so that the longitudinal direction thereof is directed in the front-rear direction and is opposed in the vertical direction. The connecting plate portion 33 is integrally provided on the right side portion (the upper side portion in FIG. 6) of the long side portions of the pair of side plate portions 31 and 32. Thereby, the hinge main body 3 is formed in the cross-sectional "U" shape. The hinge main body 3 is arranged with its open part facing the base 2 side.

A movable plate 22 is inserted into the hinge body 3. As shown in FIGS. 7 and 8, both end portions of the engagement shaft 34 whose longitudinal direction is directed in the vertical direction are fixed to the front end portions of the side plate portions 31 and 32 of the hinge body 3. The engagement shaft 34 is removably inserted into the engagement recess 22 a of the movable plate 22. On the other hand, as shown in FIG. 8, both end portions of the support shaft 35 whose longitudinal direction is directed in the vertical direction are fixed to the rear end portions of the side plate portions 31 and 32 of the hinge body 3. An engaging member 36 is rotatably provided on the support shaft 35. The engaging member 36 is urged to rotate clockwise by a coil spring 37 in FIG. An engagement recess 36a is formed in the engagement member 36, and an engagement shaft 22b provided at the rear end of the movable plate 22 is removably inserted into the engagement recess 36a. The engaging shaft 34 is removably inserted into the engaging recess 22a, and the engaging shaft 22b is removably inserted into the engaging recess 36a of the engaging member 36. It is detachably attached to the housing and by extension is detachably attached to the housing. The attachment structure of the hinge body 3 to the housing is not limited to the above structure, and other known structures can be employed. Further, the hinge body 3 may be directly fixed to the housing. This can be performed, for example, by forming a vertical plate portion extending upward or downward on the side plate portions 31 and 32 and fixing the vertical plate portion to the inner surface of either the left or right side wall portion of the housing.

One end portions of the inner and outer links 4 and 5 are rotatably connected to the front end portions of the side plate portions 31 and 32 of the hinge body 3. That is, both end portions of the pivots J1 and J2 with the longitudinal direction oriented in the vertical direction are fixed to the front end portions of the side plate portions 31 and 32, respectively. On the other hand, the inner link 4 includes a pair of side plate portions 41 and 42 that face each other in the vertical direction, and a connecting plate portion 43 that connects the long side portions of the pair of side plate portions 41 and 42. One end portions of the side plate portions 41 and 42 are inserted between the side plate portions 31 and 32, and are connected to the side plate portions 31 and 32 so as to be rotatable in the horizontal direction around the pivot axis J1. Thereby, the one end part of the inner side link 4 is connected with the front-end part of the hinge main body 3 so that rotation is possible in a horizontal direction.

The outer link 5 includes a pair of side plate portions 51 and 52 that face each other in the vertical direction, and a connecting plate portion 53 that connects the long side portions of the pair of side plate portions 51 and 52. One end portions of the side plate portions 51 and 52 are inserted between the side plate portions 31 and 32, and are connected to the side plate portions 31 and 32 so as to be rotatable in the horizontal direction around the pivot axis J2. Thereby, the one end part of the outer side link 5 is connected with the front-end part of the hinge main body 3 so that rotation in a horizontal direction is possible.

The cup member 6 is fixed to the back surface of the door (not shown), that is, the surface facing the front surface of the housing when the door is in the closed position. A connecting member 61 having a substantially “U” shape is fixed to the cup member 6. The connecting member 61 has a pair of shaft portions 62 and 63 that are parallel to each other. The pair of shaft portions 62 and 63 are arranged in a state where the longitudinal direction is directed in the vertical direction. That is, the shaft parts 62 and 63 are arranged in parallel with the pivot axes J1 and J2.

The other end portions of the side plate portions 41 and 42 of the inner link 4 are coupled to the cup member 6 so as to be rotatable in the horizontal direction around the shaft portion 62. The other end portions of the side plate portions 51 and 52 of the outer link 5 are connected to the cup member 6 so as to be rotatable in the horizontal direction around the shaft portion 63. Thereby, the cup member 6 is connected to the hinge body 3 via the inner and outer links 4 and 5 so as to be rotatable in the horizontal direction, and the door is connected to the housing via the hinge device 1 so as to be rotatable in the horizontal direction. ing.

The cup member 6 is rotatable on the hinge body 3 between a closed position shown in FIGS. 10 and 13 and an open position shown in FIGS. 8 and 11. As shown in FIG. 10, the closed position of the cup member 6 is determined by the connection plate portion 53 of the outer link 5 abutting against the bottom portion 6 a of the cup member 6. However, the cup member 6 does not reach the closed position when the hinge device 1 is attached to the housing. This is because the door hits the front surface of the housing before the outer link 5 hits the cup member 6. Therefore, in the following, the position of the cup member 6 and the door when the door hits the front surface of the housing is referred to as a closed position. The open position of the cup member 6 is determined by the side plate portions 41 and 42 of the inner link 4 abutting against the cup member 6.

As shown in FIGS. 7 and 8, the side plate portions 31 and 32 of the hinge body 3 support both end portions of the support shaft J3 whose longitudinal direction is directed in the vertical direction. The support shaft J3 is disposed slightly rearward and to the right of the pivots J1 and J2. A coil portion 71 of a torsion coil spring 7 formed by winding a wire having a square cross section is extrapolated to the support shaft J3.

Protruding portions 72 and 73 are provided at both ends of the coil portion 71 of the torsion coil spring 7. The protruding portions 72 and 73 are one end portion and the other end portion of the wire constituting the coil portion 71, and are protruded radially outward from the coil portion 71.

One protruding portion (one end portion) 72 of the torsion coil spring 7 abuts against one side plate portion 41 of the inner link 4 via a cam member 91 as shown in FIGS. The cam member 91 has a flat plate shape and is disposed between the side plate portion 31 of the hinge body 3 and the coil portion 71 of the coil spring 7. A support shaft J3 is rotatably inserted into the cam member 91. That is, the cam member 91 is rotatably supported by the support shaft J3. A pair of projecting portions 91 c and 91 d are arranged on the surface of the cam member 91 facing the projecting portion 72 so as to be separated from each other. A protrusion 72 of the torsion coil spring 7 is inserted between the pair of protrusions 91 c and 91 d so as not to move in the circumferential direction of the coil part 71. As a result, the cam member 91 is urged to rotate about the axis (axis of the support shaft J3) by the torsion coil spring 7.

A cam surface 91 a is formed at a portion of the front end portion of the cam member 91 that faces the side plate portion 41. A cam surface 41a is formed on the side plate portion 41 facing the cam surface 91a. The cam surfaces 91 a and 41 a are abutted against each other by the torsion coil spring 7. Accordingly, the rotational biasing force of the torsion coil spring 7 acts on the inner link 4 via the cam surfaces 91a and 41a. In this case, the rotational biasing force of the coil spring 7 acting on the inner link 4 does not act when the cup member 6 is located at the open position (the rotational biasing force is zero), and the cup member 6 is closed from the open position. When separated to the side, the cup member 6 acts to rotate toward the closed position. Moreover, the rotational biasing force on the inner link 4 increases as the cup member approaches the closed position. Cam surfaces 91 a and 41 a are formed so that such a rotational biasing force acts on the inner link 4. Of course, the cam surfaces 91a and 41a can be formed so that the mode of action of the rotational biasing force acting on the inner link 4 is different from the above. Further, instead of the cam surface 41a, a protruding portion that abuts against the cam surface 91a may be formed on the side plate portion 41.

As described above, the torsion coil spring 7 urges the inner link 4 to rotate counterclockwise in FIGS. 11 to 13 about the pivot axis J1 except when the cup member 6 is in the open position. As a result, the cup member 6 is urged to rotate in the direction from the open position to the closed position (hereinafter referred to as the closing direction). Therefore, when the cup member 6 is rotated from the open position to the closed position by a slight angle, for example, 5 to 10 °, the cup member 6 is thereafter rotated to the closed position by the torsion coil spring 7 and maintained in the closed position. Is done. When the cup member 6 is in the open position, the normal line (the line of action of the rotational biasing force of the torsion coil spring 7 on the inner link 4) standing at the contact portion of the cam surfaces 91a and 41a is the axis of the pivot J1. Orthogonal. Therefore, the inner link 4 is not rotationally biased by the rotational biasing force of the torsion coil spring 7. The biasing mode of the torsion coil spring 7 with respect to the inner link 4 is not necessarily required to do so. For example, the rotational biasing force of the torsion coil spring 7 acts on the inner link 4 only when the cup member 6 is located between the substantially central position between the open position and the closed position and the closed position. When 6 is located between the center position and the open position, the rotational biasing force of the torsion coil spring 7 may be prevented from acting on the inner link 4. Further, like the known hinge device, when the cup member 6 is located between the closed position and a predetermined neutral position (consideration position), the torsion coil spring 7 rotates the cup member 6 in the closing direction. When the inner link 4 is urged to rotate and the cup member 6 is positioned between the neutral position and the open position, the torsion coil spring 7 moves the cup member 6 from the closed position toward the open position (hereinafter referred to as the open position). The inner link 4 may be urged to rotate so as to rotate in the direction).

The other protrusion (second protrusion) 73 of the torsion coil spring 7 directly abuts against the outer link 5 as shown in FIGS. As a result, the torsion coil spring 7 urges the outer link 5 to rotate counterclockwise about the pivot axis J2 in the counterclockwise direction except when the cup member 6 is in the open position, and thus the cup. The member 6 is urged to rotate in the closing direction. When the cup member 6 is in the open position, the normal line (the line of action of the rotational biasing force of the torsion coil spring 7 with respect to the outer link 5) standing at the contact portion between the protrusion 73 and the outer link 5 is the axis of the pivot J2. Therefore, the outer link 5 is not rotationally biased by the rotational biasing force of the torsion coil spring 7.

Here, the magnitude of the urging force by which one protrusion 72 urges the inner link 4 via the cam member 91 and the magnitude of the urging force by which the other protrusion 73 urges the outer link 5 are the same. is there. However, the magnitude of the rotational biasing force (rotational moment) acting on the inner link 4 and the magnitude of the rotational biasing force acting on the outer link 5 may be the same depending on the rotational position of each link 4, 5. They are of different sizes at most rotational positions. Then, the cup member 6 is rotationally biased by the rotational biasing force acting on the links 4 and 5. Therefore, in order to make the rotational biasing force acting on the cup member 6 have a desired magnitude according to the rotational position, it is necessary to appropriately adjust the rotational biasing force acting on each of the links 4 and 5. However, if each of the protrusions 72 and 73 is formed in a straight line, the rotational biasing force that acts on the cup member 6 is adjusted by appropriately adjusting the rotational biasing force that acts on the links 4 and 5. It is difficult to obtain a desired size. In this respect, in this hinge device 1, since the protrusion 72 is brought into contact with the inner link 4 via the cam member 91, the rotational biasing force acting on the outer link 5 is taken into consideration and the cam surface 91 a of the cam member 91 is By designing the shape, the rotational biasing force acting on the cup member 6 can be set to a desired magnitude according to the rotational position.

Although one projecting portion 72 of the torsion coil spring 7 is abutted against the side plate portion 41 of the inner link 4 via the cam member 91, the projecting portion 72 may be directly abutted against the side plate portion 41. In that case, the other protrusion 73 is abutted against the side plate portion 52 of the outer link 5 via the cam member. Further, the projecting portion 72 may abut against a location adjacent to the side plate portion 41 of the connecting plate portion 43 via a cam member. The same applies to the case where the other protrusion 73 is abutted against the outer link 5. Further, the protruding portion 73 may abut against the connecting plate portion 33 of the hinge body 3.

As shown in FIGS. 7 and 11 to 13, a cylindrical portion 91 b is formed on the surface of the cam member 91 facing the coil portion 71. A support shaft J3 is rotatably inserted into the cylindrical portion 91b. The outer diameter of the cylindrical portion 91 b is set slightly smaller than the inner diameter of the coil portion 71, and the cylindrical portion 91 b is fitted to one end portion of the coil portion 71 so as to be relatively rotatable with a slight gap. As a result, one end portion of the coil portion 71 is stably supported by the cylindrical portion 91b without hindering the expansion / contraction diameter associated with torsion of the torsion coil spring 7.

As shown in FIGS. 7 and 14 to 16, a spacer (inserted member) 92 is disposed between the side plate portion 32 of the hinge body 3 and the torsion coil spring 7. The spacer 92 is rotatably penetrated by the support shaft J3. A pair of projecting portions 92 a and 92 a are disposed and separated from each other on the surface of the spacer 92 facing the projecting portion 73. A protrusion 73 is inserted between the pair of protrusions 92 a and 92 a so as not to move in the circumferential direction of the coil part 71. Therefore, the spacer 92 rotates together with the protrusion 73 around the axis of the torsion coil spring 7. A cylindrical portion (second cylindrical portion) 92 b is formed on the surface of the spacer 92 facing the coil portion 71. A support shaft J3 is rotatably inserted into the cylindrical portion 92b. The outer diameter of the cylindrical portion 92b is slightly larger than the inner diameter of the coil portion 71, and the cylindrical portion 92b is fitted to the other end portion of the coil portion 71 so as to be relatively rotatable with a slight gap. As a result, the other end portion of the coil portion 71 is stably supported by the cylindrical portion 92b without hindering the expansion / contraction diameter associated with torsion of the torsion coil spring 7.

One projecting portion 72 of the torsion coil spring 7 contacts the inner link 4 only at one side plate portion 41, and the other projecting portion 73 contacts the outer link 5 only at one side plate portion 52. ing. That is, the inner link 4 is biased only by one side plate portion 41 by the torsion coil spring 7, and the outer link 5 is biased only by the other side plate portion 52. Accordingly, the inner and outer links 4 and 5 are maintained in a constant posture. Therefore, it is possible to prevent the inner and outer links 4 and 5 from rattling when the door (cup member 6) is opened and closed.

That is, the projecting portions 72 and 73 of the torsion coil spring 7 are brought into contact with the side plate portions 41 and 42 of the inner link 4 to rotate only the inner link 4 or contact the side plate portions 51 and 52 of the outer link 5 respectively. It is also possible to rotate only the outer link 5 and thereby urge the cup member 6 to rotate. In addition, as in a known hinge device (see JP-A-6-323055), two torsion coil springs are arranged side by side in the axial direction, and one end portions separated from each other in the longitudinal direction of both torsion coil springs, It is also possible to urge each link to rotate by bringing it into contact with both side portions of one link and bringing the other end portions of the torsion coil springs into contact with the center portion of the other link. .

However, when such a conventional biasing mode is employed, the biasing force of each torsion coil spring against each link is applied to one side and the other side of each link (one side and the other side in the rotational axis direction of each link). Therefore, depending on the operating condition of the load on the cup member, the one side portion and the other side portion of each link have a gap based on the dimensional error between the both side plate portions of the hinge body and the pivot shaft, and each link. It moves by the amount of the gap based on the dimensional error between the both side plate portions and the pivot, and rattles so that each link swings. As a result, noise may be generated when the door is opened and closed.

In this respect, in the hinge device 1, the inner link 4 is rotationally biased by the torsion coil spring 7 only in the side plate portion 41 that is one side portion in the axial direction of the pivot axis J 1, and the other side plate portion 42 is There is no rotation bias. Therefore, the inner link 4 is maintained in a constant posture and does not rattle so as to swing. Similarly, in the outer link 5, only the side plate portion 52 which is the other side portion in the axial direction of the pivot axis J <b> 2 is rotationally biased by the torsion coil spring 7, and the side plate portion 51 is not rotationally biased. Therefore, the outer link 5 is also maintained in a constant posture and does not rattle so as to swing. Therefore, it is possible to prevent noise from being generated when the door is opened and closed.

As shown in FIGS. 17 and 18, a rotary damper 8 is disposed between the side plate portions 41 and 42 of the inner link 4. The rotation damper 8 is for suppressing the rotation speed of the inner link 4 and the outer link 5 at a low speed when the door and the cup member 6 are rotated in the closing direction, and thus suppressing the rotation speed of the door and the cup member 6 at a low speed. Yes, as shown in FIGS. 7 and 17 to 28, a damper main body 81 and a rotor 82 are provided.

As shown in FIGS. 24 to 28, the damper main body 81 has a bottomed cylindrical shape with one end opened and the other end closed by a bottom portion 81 a, and the inside is a housing portion 81 </ b> A. The damper main body 81 is disposed between the side plate portions 41 and 42 with the opening thereof facing the side plate portion 41 of the inner link 4. Moreover, the damper main body 81 is arranged with its axis line coincident with the axis line of the pivot axis J1. A through hole 81b is formed at the center of the bottom 81a. The through hole 81b is arranged with its axis line coinciding with the axis line of the pivot axis J1.

The rotor 82 has a large-diameter portion 82a and a small-diameter portion 82b that are formed so that their axes coincide with each other. The large diameter portion 82 a is rotatably fitted to the end portion on the opening portion side of the inner peripheral surface of the damper main body 81. On the other hand, the small diameter portion 82b is rotatably fitted in the through hole 81b. Thereby, the damper main body 81 and the rotor 82 are mutually rotatable centering on those axis lines (axis line of the pivot axis J1).

A support hole 82 d is formed in the central portion of the rotor 82 so as to penetrate the axis line from one end surface to the other end surface of the rotor 82. The pivot J1 is rotatably inserted into the support hole 82d. Thus, the rotor 82 is rotatably supported by the hinge body 3 via the pivot axis J1, and as a result, the rotary damper 8 is rotatably supported by the hinge body 3. The rotary damper 8 may be rotatably supported on the pivot J2. In that case, the rotary damper 8 is disposed between the side plate portions 51 and 52 of the outer link 5. The rotary damper 8 may be rotatably supported on a different axis parallel to the pivot axes J1 and J2. In that case, the rotary damper 8 is arranged outside the inner link 4 and the outer link 5.

As shown in FIGS. 7, 8, and 19 to 23, two teeth (external gear portions) 81 c and 81 d are formed on the outer peripheral surface of the damper main body 81 so as to be spaced apart from each other in the circumferential direction. The two teeth 81c and 81d constitute a part of the gear centered on the axis of the damper main body 81.

As shown in FIGS. 7 to 10, a gear member 93 is rotatably inserted on the pivot axis J <b> 2. The gear member 93 is disposed between the side plate portions 51 and 51 of the outer link 5 and is connected to the outer link 5 so as not to rotate. Therefore, the gear member 93 rotates together with the outer link 5 around the pivot axis J2.

The gear member 93 is formed with one tooth 93a. The teeth 93a can mesh with the teeth 81c and 81d formed on the damper body 81, and the gap between the closed position and the mesh start position where the cup member 6 is spaced from the closed position toward the open position by a predetermined angle. 10 is located between the teeth 81c and 81d as shown in FIG. Therefore, when the cup member 6 is located within the meshing range, the teeth 93a mesh with the teeth 81c and 81d, and the damper main body 81 is rotated with the rotation of the outer link 5. In this case, when the cup member 6 rotates in the opening direction, the teeth 93a mesh with the teeth 81c, and the damper main body 81 rotates counterclockwise in FIG. On the other hand, when the cup member 6 rotates in the closing direction, the teeth 93a mesh with the teeth 81d, and the damper main body 81 rotates clockwise in FIG. As is clear from this, the gear member 93 and the teeth 81c and 81d meshing with the teeth 93a constitute a second rotation transmission mechanism for transmitting the rotation of the outer link 5 to the damper body 81. When the rotary damper 8 is provided on the pivot axis J2, the gear member 93 is provided on the pivot axis J1 and is rotated integrally with the inner link 4.

When the cup member 6 is located between the meshing start position and the open position, that is, outside the meshing range, the teeth 93a of the gear member 93 come out from between the teeth 81c and 81d. It does not mesh with. Therefore, at that time, the damper main body 81 can freely rotate with respect to the gear member 93 and the outer link 5. However, even in that case, the damper main body 81 does not freely rotate independently, but rotates integrally with the rotor 82 as described later.

As shown in FIGS. 19 to 21, a plurality of (three in this embodiment) projections 82 c are formed on the end surface of the rotor 82 that faces the side plate portion 41 of the large-diameter portion 82 a. The plurality of protrusions 82 c are arranged on one circumference centered on the axis of the rotor 82. Each protrusion 82c may be disposed on a circumference having a different diameter. Further, only one protrusion 82c may be formed.

As shown in FIG. 7, the same number of holes 41 b as the protrusions 82 c are formed in the portion of the side link 41 of the inner link 4 that faces the large diameter portion 82 a. A protrusion 82c is inserted into each 41b. Thereby, the rotor 82 rotates integrally with the inner link 4. Therefore, the rotor 82 rotates counterclockwise in FIGS. 22 and 23 when the cup member 6 rotates in the closing direction, and clockwise in FIGS. 22 and 23 when the cup member 6 rotates in the opening direction. Rotate. As is clear from this, the hole 41b and the projection 82c constitute a locking mechanism (first rotation transmission mechanism) for rotating the rotor 82 integrally with one end of the inner link 4 about the pivot axis J1. .

Here, when the cup member 6 is positioned within the meshing range, the rotation direction about the pivot axis J1 at one end of the inner link 4 and the rotation direction about the pivot axis J2 at one end of the outer link 5 Are in the same direction, but the rotation of the outer link 5 is transmitted to the damper main body 81 via the gear member 93, so that the rotation directions of the damper main body 81 and the rotor 82 are opposite to each other. Therefore, the relative rotational speed between the damper main body 81 and the rotor 82 becomes higher than that in the case where, for example, one of them is provided on the hinge main body 3 so as not to rotate, and only the other is rotated.

In addition, the rotation transmission mechanism between each of the damper main body 81 and the rotor 82 and the inner and outer links 4 and 5 is not limited to the above embodiment, and can be changed in various ways. For example, a projection corresponding to the projection 82 c is formed on the outer end surface of the bottom 81 a of the damper main body 81, that is, an end surface facing the side plate portion 42, and a hole corresponding to the hole 41 b is formed in the side plate portion 42. And you may rotate the damper main body 81 integrally with the inner side link 4 by inserting protrusion in a hole. In this case, teeth corresponding to the teeth 81c and 81d are formed on the outer peripheral surface of the portion of the rotor 82 protruding from the damper main body 81, and the teeth 93a of the gear member 93 are engaged with the teeth. Such deformation is also possible when the rotary damper 8 is provided on the pivot axis J2.

As described above, the large-diameter portion 82a of the rotor 82 is fitted to the end portion of the inner peripheral surface of the damper main body 81 on the opening side, and the small-diameter portion 82b is fitted to the through hole 81b of the bottom portion 81a. As shown in FIG. 18, between the inner peripheral surface of the damper main body 81 and the outer peripheral surface of the small diameter portion 82 b, an annular shape in which both ends are closed by the bottom portion 81 a of the damper main body 81 and the large diameter portion 82 a of the rotor 82. The space 83 is formed. The space 83 is sealed between the inner peripheral surface of the damper main body 81 and the outer peripheral surface of the large-diameter portion 82a by a seal member 84 such as an O-ring, and the inner peripheral surface of the through hole 81b and the small-diameter portion 82b. The space between the outer peripheral surface and the outer peripheral surface is sealed with a sealing member 85 such as an O-ring, thereby sealing the outside. The space 83 is filled with a fluid. As this fluid, various fluids used in a known rotary damper such as a viscous fluid can be employed.

The large-diameter portion 82a and the small-diameter portion 82b of the rotor 82 are fitted to the inner peripheral surface of the damper main body 81 and the inner peripheral surface of the through hole 81b so as to be movable in the axial direction of the damper main body 81, respectively. Therefore, the damper main body 81 and the rotor 82 are movable relative to each other in the axial direction thereof. In this embodiment, the position of the rotor 82 is fixed, and the damper main body 81 moves with respect to the rotor 82. Of course, the position of the damper main body 82 may be fixed, and the rotor 82 may be moved relative to the damper main body 81, or both may be moved relative to each other. The damper main body 81 is movable between a first position shown in FIGS. 24, 25 and 27 and a second position shown in FIGS. 26 and 28. However, the distance between the first position and the second position (hereinafter referred to as the separation distance) is very small, and is set to about 0.1 to 0.2 mm, for example.

As shown in FIGS. 22 and 23, a pair of partition walls 81 e and 81 f are formed in a portion facing the space 83 on the inner peripheral surface of the damper main body 81. The partition walls 81e and 81f are arranged 180 degrees apart from each other in the circumferential direction of the damper main body 81. The partition walls 81 e and 81 f extend in the axial direction of the damper main body 81. One end portions of the partition portions 81e and 81f are formed integrally with the bottom portion 81a. That is, the partition walls 81e and 81f extend from the bottom 81a toward the opening. As shown in FIG. 27, the lengths of the partition walls 81e and 81f are equal to the distance between the bottom 81a and the large-diameter portion 82a when the damper main body 81 is located at the first position. Therefore, when the damper main body 81 is located at the first position, the end surfaces (hereinafter referred to as the front end surfaces) of the partition walls 81e and 81f are in contact with the large diameter portion 82a. However, when the damper main body 81 is positioned at the second position, as shown in FIG. 28, the tip surfaces of the partition walls 81e and 81f are separated from the large-diameter portion 82a by the separation distance.

As shown in FIGS. 22 to 26, a pair of protrusions 82e and 82f are formed in a portion of the rotor 82 facing the space 83 of the small diameter portion 82b. The protrusions 82e and 82f are arranged 180 degrees apart from each other in the circumferential direction of the rotor 82 (the circumferential direction of the damper main body 81). Moreover, the protrusions 82e and 82f are arranged so as to be positioned between the partition walls 81e and 81f, respectively. The protrusions 82e and 82f extend in the axial direction of the rotor 82 (the axial line of the damper main body 81). One end portions of the protrusions 82e and 82f are integrally formed with the large diameter portion 82a. That is, the protrusions 82e and 82f extend from the large diameter portion 82a toward the bottom portion 81a. The lengths of the protrusions 82e and 82f are set to be the same as the lengths of the partition walls 81e and 81f. Therefore, when the damper main body 81 is located at the first position, as shown in FIGS. 24 and 25, end surfaces (hereinafter referred to as front end surfaces) on the bottom 81a side of the protrusions 82e and 82f are formed on the bottom 81a. Contact. However, when the damper main body 81 is positioned at the second position, as shown in FIG. 26, the tip surfaces of the protrusions 82e and 82f are separated from the bottom 81a by a separation distance.

As shown in FIGS. 22, 24, 27, and 28, the inner end surfaces of the partition wall portions 81e and 81f, that is, the end surfaces of the partition wall portions 81e and 81f positioned on the inner side in the radial direction of the damper main body 81 are the small diameter portions 82b. It is made to contact the outer peripheral surface of this so that rotation is possible. On the other hand, the outer end surfaces of the protrusions 82e and 82f, that is, the end surfaces of the protrusions 82e and 82f located on the outermost side in the radial direction of the rotor 82 are the inner peripheral surfaces of the damper main body 81 as shown in FIGS. Is rotatably contacted. As a result, the space 83 is divided into four spaces sequentially arranged in the circumferential direction by the partition walls 81e and 81f and the protrusions 82e and 82f. Of the four spaces, a space partitioned by the partition wall 81e and the protrusion 82e and a space partitioned by the partition wall 81f and the protrusion 82f are referred to as a high pressure chamber 83A, and the partition wall 81e and the protrusion 82f The divided space and the space divided by the partition wall portion 81f and the protrusion 82e are referred to as a low pressure chamber 83B.

As shown in FIGS. 22 to 26, recesses 82g and 82h are formed in the protrusions 82e and 82f, respectively. As shown in FIGS. 22 and 23, one high-pressure chamber 83A and low-pressure chamber 83B are communicated with each other through a recess 82g, and the other high-pressure chamber 83A and low-pressure chamber 83B are communicated with each other through a recess 82h. It has been. The recesses 82g and 82h are opened and closed by valve bodies 85A and 85B.

That is, as shown in FIGS. 22 and 23, the outer portions of the valve bodies 85 </ b> A and 85 </ b> B in the radial direction of the damper main body 81 can slide with a predetermined pressing force on the inner peripheral surface of the damper main body 81 facing the space 83. And in a sealed state. On the inner portions of the valve bodies 85A and 85B, protrusions 82e and 82f of the rotor 82 are provided so as to be movable within a predetermined range in the circumferential direction. As shown in FIGS. 22 and 24, when the cup member 6 rotates in the closing direction, the damper main body 81 rotates in the direction of the arrow A and the rotor 82 rotates in the direction of the arrow B, the recesses 82g and 82h. Are closed by the valve bodies 85A and 85B, respectively. As a result, the fluid in the high-pressure chamber 83A cannot pass through the recesses 82g and 82h, and the slight gap S1 (see FIG. 26) between the bottom 81a and the tip surfaces of the protrusions 82e and 82f and the large diameter. It flows into the low pressure chamber 83B through a slight gap S2 (see FIG. 28) between the portion 82a and the front end surfaces of the partition walls 81e and 81f. At this time, the gap S1 between the protrusions 82e and 82f and the gap S2 between the large-diameter portion 82a and the partition walls 81e and 81f are a kind of resisting fluid flow. Acts as an orifice. Therefore, the rotation of the damper main body 81 in the direction of arrow A and the rotation of the rotor 82 in the direction of arrow B are suppressed to a low speed, and consequently the rotation of the cup member 6 in the closing direction is suppressed to a low speed.

When the cup member 6 rotates in the closing direction outside the meshing range, the damper main body 81 does not rotate following the rotation of the outer link 5. At that time, the damper main body 81 has a frictional resistance between the partition walls 81e and 81f and the small diameter part 82b, a frictional resistance between the protrusions 82e and 82f and the inner peripheral surface of the damper main body 81, and the valve bodies 85A and 85B. And the rotor 82 due to the frictional resistance between the inner peripheral surface of the damper main body 81 and the rotor 82. Therefore, the rotary damper 81 does not function as a damper.

When the cup member 6 rotates in the opening direction, the damper main body 81 rotates in the arrow B direction in FIGS. 22 and 23, and the rotor 82 rotates in the arrow A direction. At this time, as shown in FIGS. 23 and 25, the valve bodies 85A and 85B do not close the entire recesses 82g and 82h, but open the recesses 82g and 82h. Accordingly, the fluid in the low pressure chambers 83B and 83B flows into the high pressure chambers 83A and 83A through a part of the opened recesses 82g and 82h, respectively. Here, some of the opened recesses 82g and 82h have a flow area sufficient to allow the fluid in the low pressure chamber 83B to flow to the high pressure chamber 83A side with almost no resistance. Therefore, the damper main body 81 and the rotor 82 can rotate with little resistance, and the cup member 6 can rotate at high speed in the opening direction.

The rotary damper used in the hinge device of the present invention is not limited to the rotary damper 8 having the above-described configuration, and the rotation of the inner link 4 and / or the outer link 5 in the closing direction can be suppressed to a low speed. If possible, a rotary damper having another known structure may be employed.

The magnitude of the damper effect of the rotary damper 8, that is, the magnitude of the damper effect that suppresses the rotation of the damper main body 81 and the rotor 82 at a low speed when the cup member 6 rotates in the closing direction within the meshing range is as follows. The rotor 82 can be adjusted by adjusting the position to an appropriate position between the first position and the second position. Therefore, a position adjusting mechanism having the following configuration is provided between the side plate portion 42 of the inner link 4 and the bottom portion 81 a of the damper main body 81.

That is, as shown in FIGS. 7 and 14 to 18, between the side plate portion 42 of the inner link 4 and the bottom portion 81 a of the damper main body 81, the rotating cam plate 95 and the movable cam plate 96 are from the side plate portion 42 side. They are sequentially arranged toward the damper main body 81 side.

As shown in FIG. 18 in particular, the rotating cam plate 95 is rotatably in contact with the inner surface of the side plate portion 42 facing the side plate portion 41, and is rotatably inserted by the pivot J1. An arm portion 95 a is formed on the outer peripheral portion of the rotating cam plate 95. The arm portion 95a extends outward in the radial direction of the pivot axis J1. An operating piece portion 95b that protrudes toward the side plate portion 42 is formed at the distal end portion of the arm portion 95a. The operation piece portion 95b passes through the side plate portion 42, and further protrudes to the outside through an operation window hole 32a (see FIG. 2) formed in the side plate portion 32 of the hinge body 3. Therefore, the operation piece portion 95b can be operated from the outside of the hinge device 1.

As shown in FIG. 29, the operation window hole 32a is formed as a long hole extending in an arc shape around the pivot axis J1. Therefore, the rotary cam plate 95 can be rotated by moving the operation piece portion 95b along the operation window hole 32a.

The operation piece 95b is pressed and brought into contact with the inner peripheral surface on the large diameter side of the inner peripheral surface of the operation window hole 32a by the elasticity of the arm portion 95a. A plurality of engaging recesses 32b are formed on the inner peripheral surface on the large diameter side of the operation window hole 32a. On the other hand, on the outer surface of the operation piece portion 95b that contacts the inner peripheral surface of the operation window hole 32a, an engagement convex portion 95c that is detachably engaged with the engagement concave portion 32b is formed. By engaging the engaging convex portion 95c with the engaging concave portion 32b by the elastic force of the arm portion 95a, the operation piece portion 95b is positioned with a predetermined magnitude of force, and consequently the rotational position of the rotary cam plate 95. Is stipulated. Of course, the engagement of the engagement projection 95c with the engagement recess 32b can be released by moving the operation piece 95b to the small diameter side of the operation window hole 32a against the elastic force of the arm portion 95a. The rotating cam plate 95 can be rotated by moving the operation piece 95b in the longitudinal direction of the operation window hole 32a while maintaining this state. After that, when the operation piece 95b can be moved freely, the operation piece 95b is pressed against the inner peripheral surface on the large diameter side of the operation window hole 32b by the elastic force of the arm 95a, and the engagement convex portion 95c engages with the engaging recess 32b. As a result, the rotating cam plate 95 is maintained in its rotating position.

As shown in FIG. 18, the movable cam plate 96 has one surface opposed to the rotating cam plate 95 and the other surface rotatably contacted with the bottom 81 a of the damper main body 81. A pivot J1 is rotatably inserted into the movable cam plate 96. However, the movable cam plate 96 is engaged with the engagement shaft 34. Thereby, the movable cam plate 96 is prevented from rotating about the pivot axis J1. The movable cam plate 96 is movable in the longitudinal direction with respect to the pivot axis J1 and the engagement shaft 34. Therefore, the movable cam plate 96 can move toward and away from the rotating cam plate 95.

As shown in FIG. 7, a plurality of cam surfaces 95d extending in the circumferential direction are formed on the surface of the rotating cam plate 95 facing the movable cam plate 96. On the other hand, on the surface of the movable cam plate 96 facing the rotating cam plate 95, the same number of cam surfaces 96a as the cam surfaces 95d are formed. Each cam surface 95d and each cam surface 96a are in contact with each other, and the rotating cam plate 95 and the movable cam plate 96 are not in contact with each other except the cam surface 95d and the cam surface 96a.

When the rotary cam plate 95 is rotated in one direction, the cam surfaces 95d and 96a that are in contact with each other move the movable cam plate 96 away from the rotary cam plate 95 and move the damper main body 81 from the second position side to the first position. Move to one position. Then, the clearance S1 between the bottom 81a and the protrusions 82e and 82f and the clearance S2 between the large diameter portion 82a and the partition portions 81e and 81f are reduced, and resistance to the fluid flowing through the clearances S1 and S2 is increased. Become. Therefore, the damper effect of the rotary damper 8 is increased.

Conversely, when the rotating cam surface 95 is rotated in the other direction, the cam surfaces 95 d and 96 a allow the movable cam plate 96 to move closer to the rotating cam plate 95. Then, the movable cam plate 96 is moved from the first position side to the second position side by the pressure of the fluid in the space 83 of the damper main body 81. As a result, the clearance S1 between the bottom portion 81a and the protrusions 82e and 82f and the clearance S2 between the large diameter portion 82a and the partition walls 81e and 81f are increased, and resistance to the fluid flowing through these clearances S1 and S2. Becomes smaller. Therefore, the damper effect of the rotary damper 8 is reduced.

As is clear from the above contents, in this hinge device 1, the hinge body 81 is moved relative to the rotor 82 by the rotary cam plate 95, the movable cam plate 96 and the fluid filled in the space 83 to adjust the position. A position adjusting mechanism is configured. The position adjusting mechanism is not limited to the above-described configuration, and various modifications can be employed. For example, a positive cam mechanism may be provided between the rotating cam plate 95 and the movable cam plate 96 so that the movable cam plate 96 is moved toward and away from the rotating cam plate 95 by the rotation of the rotating cam plate 95. Good. In that case, the fluid in the space 83 is not necessary for moving the movable cam 96.

The rotary damper 8, the rotary cam plate 95, and the movable cam plate 96 can be incorporated into the damper main body 3 as follows. First, the side plate portions 41 and 42 of the inner link 4 are inserted between the side plate portions 31 and 32 of the damper main body 3. Next, the rotary damper 8 is inserted between the side plate portions 41 and 42. Then, the rotary damper 8 is moved from the side plate portion 42 side to the side plate portion 41 side, and the protrusion 82c is inserted into the hole 41b. Next, the rotating cam plate 95 is inserted between the damper main body 81 of the rotating damper 8 and the side plate portion 42, and the operating piece portion 95b of the rotating cam plate 95 is inserted into the operating window hole 32a. Thereafter, the movable cam plate 96 is inserted between the rotating cam plate 95 and the damper main body 81. Finally, the pivot J1 is inserted through the side plate portion 31, the side plate portion 41, the support hole 82d, the movable cam plate 96, the rotating cam plate 95, the side plate portion 42, and the side plate portion 32.

In the hinge device 1 configured as described above, the protruding portion 72 is brought into contact with the cam member 91 via the cam surface 91a. In such a case, the rotational biasing force acting on the inner link 4 can be reduced by forming the cam surface 91a in an appropriate shape as compared with the case where the protrusion 72 is brought into direct contact with the inner link 4. The degree of freedom of the mode of action can be greatly expanded. The aspect of the rotational urging force with respect to the inner link 4 can be changed as much as desired.

In particular, in this embodiment, since the outer link 5 is rotationally biased by the other protrusion 73 of the torsion coil spring 7, the biasing mode for the inner link 4 by the torsion coil spring 7 and the bias for the outer link 5 are also provided. The biasing mode is the same. In this case, if the cam member 91 is not provided, the biasing mode is the relationship between the protruding portion 72 and the inner link 4, and the protruding portion 73 and the outer link 5. The urging mode is determined by both the relationship with For this reason, it is almost impossible to apply a desired biasing mode to the inner and outer links 4 and 5. However, in this hinge device 1, one projecting portion (first projecting portion) 72 is brought into contact with the inner link 4 via the cam surface 91 a of the cam member 91. By determining the shape of the cam surface 91a in consideration of the relationship, the rotation biasing mode of the torsion coil spring 7 with respect to the inner and outer links 4 and 5 can be easily changed to a desired mode.

30 to 33 show a second embodiment of the present invention. In the hinge device 1 ′ of this embodiment, a second rotation transmission mechanism for transmitting the rotation of the outer link 5 to the damper main body 81 is different from the above embodiment. That is, the outer peripheral surface of the damper main body 81 is formed with a protruding portion 81g that protrudes outward in the radial direction. The protrusion 81g is formed with a guide hole (guide groove) 81h extending in the longitudinal direction. Instead of the guide hole 81h, a guide groove extending in the same direction may be formed in the protruding portion 81g. On the other hand, a shaft portion 54 is formed at one end of the outer link 5. The shaft portion 54 is formed with its longitudinal direction oriented in the axial direction of the pivot axis J2, and is disposed at a location separated from the axis line of the pivot axis J2. The shaft portion 54 is inserted into the guide hole 81h so as to be movable in the longitudinal direction and to be rotatable. Therefore, when the outer link 5 rotates about the pivot axis J2, the damper main body 81 rotates about the pivot axis J1. The damper main body 81 rotates in the direction opposite to the rotor 82, and the guide hole 81h and the shaft portion 54 are arranged as such. As long as the guide hole 81h can transmit the rotation of the outer link 5 to the damper main body 81 in cooperation with the shaft portion 54, the longitudinal direction of the guide hole 81h is not necessarily the longitudinal direction of the protrusion 81g, that is, the damper main body. It is not necessary to coincide with the radial direction passing through the center of 81, and it may be formed in a direction parallel to the radial direction or in a direction crossing the radial direction. Since the other configuration of the hinge device 1 ′ is the same as that of the first embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.

A transmission method in which the rotation of the outer link 5 is transmitted to the damper main body 81 by the guide hole 81 h and the shaft portion 54 can also be adopted between the rotor 82 and the outer link 5. In that case, the protrusion part corresponding to the protrusion part 81g is formed in the part protruded outside from the damper main body 81 of the rotor 82. As shown in FIG. In addition, a rotation transmission mechanism is provided between the damper main body 81 and the side plate portion 42 of the inner link 4 in order to transmit the rotation of the inner link 4 to the damper main body 81 by fitting the protrusions and the holes. When the rotation damper is provided on a shaft different from the pivots J1 and J2, the rotation transmission mechanism by the guide hole 81h and the shaft portion 54 is provided between the inner link 4 and one of the damper main body 81 and the rotor 82, and You may provide between the outer side link 5, and the other of the damper main body 81 and the rotor 82, respectively.

FIG. 34 shows a torsion spring 7A used in place of the torsion coil spring 7 in the hinge device according to the present invention. The torsion spring 7 </ b> A is made of a metal plate material, and has a cylindrical portion 74 formed by winding the plate material in a substantially C-shaped cross section, and a protruding portion provided at one end portion in the axial direction of the cylindrical portion 74 ( One end portion) 75 and a projecting portion (other end portion) 76 provided at the other end portion of the cylindrical portion 74 are configured. Of course, the protruding portion 75 is abutted against the side plate portion 41 of the inner link 4, and the protruding portion 76 is abutted against the side plate portion 52 of the outer link 5.

35 to 38 show a third embodiment of the present invention. In this embodiment, a locking mechanism (first rotation transmission mechanism), a second rotation transmission mechanism, and a position adjustment mechanism that are different from the above-described embodiment are employed. First, the locking mechanism will be described. At the rear end portion of the side plate portion 41 of the inner link 4, a protrusion 41c protruding in the radial direction of the pivot axis J1 is formed. On the other hand, on the end surface of the rotor 82 facing the side plate portion 41, two protrusions 82i and 82i are provided apart from each other by a predetermined distance in the circumferential direction around the pivot axis J1. A protrusion 41c is inserted between the two protrusions 82i and 82i so as not to move in the circumferential direction of the pivot axis J1. Thereby, the inner link 4 and the rotor 82 are connected so as not to be relatively rotatable, and the rotation of the inner link 4 is transmitted to the rotor 82.

Next, the second rotation transmission mechanism will be described. An engagement shaft (shaft portion) 55 is provided at the rear end portion of the outer link 5. The engaging shaft 55 is disposed in parallel with the pivot axis J <b> 2, and both end portions thereof are supported by the outer link 5. On the other hand, on the outer peripheral surface of the damper main body 81, two projecting portions 81g and 81g are provided at a predetermined distance in the circumferential direction of the damper main body 81. A guide groove 81i is formed between the two protrusions 81g and 81g. In the guide groove 81i, the central portion of the engagement shaft 55 is inserted so as to be movable in the radial direction of the damper main body 81 and almost immovable in the circumferential direction. Therefore, when the outer link 5 rotates, the engagement shaft 55 hits one or the other of the two protrusions 81g and 81g according to the rotation direction. Thereby, the rotation of the outer link 5 is transmitted to the damper main body 81.

In the position adjusting mechanism, the arrangement of the rotating cam plate 95 and the movable cam plate 96 is different from that in the above embodiment. That is, the rotating cam plate 95 is disposed outside the side plate portion 42 of the inner link 4. That is, it is disposed between the side plate portion 42 and the side plate portion 32 of the hinge body 3. On the other hand, the movable cam plate 96 is disposed between the side plate portion 42 and the bottom portion 81 a of the damper main body 81. Therefore, the side plate portion 42 is interposed between the rotating cam plate 95 and the movable cam plate 96. A part of each of the rotating cam plate 95 and the movable cam plate 96 is projected from the side plate portion 42 to the outside in the radial direction of the pivot J1. A cam surface (not shown) corresponding to the cam surfaces 95d and 96a is formed on each part protruding from the side plate portion 42, respectively. Of course, both cam surfaces are in contact with each other. Therefore, when the rotating cam plate 95 is rotated, the movable cam plate 96 moves in the axial direction of the pivot axis J1, and the damper main body 81 moves in the same direction.

The inner link 4, the outer link 5, the rotary damper 8, the rotary cam plate 95 and the movable cam plate 96 of the hinge device having such a position adjusting mechanism are arranged between the side plate portions 31 and 32 of the hinge body 3 as follows. Can be incorporated. First, the rotating cam plate 95 is inserted between the side plate portions 31 and 32 of the hinge body 3. Then, the rotating cam plate 95 is moved in the axial direction of the pivot J1 to contact the side plate portion 32, and the operation piece portion 95b is inserted into the operation window hole 32a. Next, one end of the side plate portions 41 and 42 of the inner link 4 is inserted between the side plate portion 31 and the rotating cam plate 95. Thereafter, the rotary damper 8 is inserted between the side plate portions 41 and 42, and the protrusion 41c is inserted between the protrusions 82i and 82i. In this case, since the gap between the projections 82i and 82i is opened toward the radially outer side of the pivot axis J1, the projection 41c can be inserted between the projections 82i and 82i from the radially outer side of the pivot axis J1. Therefore, the rotary damper 8 can be inserted between the side plate portions 41 and 42 only by moving in the radial direction of the pivot axis J1. Thereafter, the movable cam plate 96 is inserted between the rotary damper 8 and the side plate portion 42. The movable cam plate 96 may be inserted between the side plate portions 41 and 42 before the rotation damper 8 is inserted between the side plate portions 41 and 42 or simultaneously with the rotation damper 8. The rotary damper 8 and the movable cam plate 96 may be inserted in advance between the side plate portions 41 and 42 before the side plate portions 41 and 42 are inserted between the side plate portions 31 and 32 (rotary cam plate 95). . Thereafter, the pivot J1 is inserted through the side plate portions 31 and 32, the side plate portions 41 and 42, the rotary damper 8, the rotary cam plate 95, and the movable cam plate 96. This completes the integration. After that, the outer link 5 is inserted between the side plate portions 31 and 32, the engaging shaft 55 is inserted into the guide groove 82i between the projecting portions 81g and 81g, and the side plate portions 31 and 32 and the outer link 5 are pivoted to the pivot axis J2. Is inserted. The outer link 5 may be inserted between the side plate portions 31 and 32 before being inserted between the side plate portions 31 and 32 of the inner link 4. In that case, when the rotary damper 8 is inserted between the side plate portions 41 and 42, the engaging shaft 55 is relatively inserted into the guide groove 82i between the projecting portions 81g and 81g.

Further, in this embodiment, one end portions of the two projecting portions 91c and 91d of the cam member 91 are connected to each other, and the two projecting portions 91c and 91d are formed in a substantially “U” shape as a whole. . The interval between the projecting portions 91c and 91d is slightly wider than the projecting portion 72 of the torsion coil spring 7, and the projecting portion 72 is movable between the projecting portions 91c and 91d by a slight distance in the circumferential direction of the coil portion 71. It has become. Of course, the protrusion 72 may be inserted between the protrusions 91c and 91d so as not to move in the circumferential direction of the coil portion 71.

Furthermore, in this embodiment, the movable cam plate 96 is prevented from rotating by a spacer 92 instead of the engagement shaft 34. For this purpose, an engaging recess 96 b is formed on the outer peripheral surface of the movable cam plate 96. The bottom surface of the engagement recess 96b is formed by an arc surface centered on the axis of the support shaft J3. On the other hand, the outer peripheral surface of the spacer 92 is an arc surface centered on the axis of the support shaft J3, and its radius of curvature is set to be the same as the radius of curvature of the arc surface constituting the engaging recess 96b. A part of the outer peripheral surface of the spacer 92 is inserted into the engaging recess 96b. Thereby, the rotation of the movable cam plate 96 is prevented. In addition, the rotation of the spacer 92 is not prevented by the movable cam plate 96.

39 to 47 show a fourth embodiment of the present invention. This embodiment is improved so that the inner link 4 can be easily attached to the hinge body 3. That is, when the inner link 4 and the outer link 5 are attached to the hinge body 3, as shown in FIGS. 44 and 45, the torsion coil spring 7 is attached to the hinge body 3 via the support shaft J3 before the attachment. The cam member 91 and the spacer 92 are attached to the protrusions 72 and 73 of the torsion coil spring 7, respectively.

As shown in FIGS. 45 and 47, the protrusion 73 of the torsion coil spring 7 is pressed against the connecting plate portion 33 of the hinge body 3 via a spacer 92. In this state, assuming that the torsion coil spring 7 is in a natural state where no external force acts, the projection 72 is a pivot axis J1 which is the center of rotation of the inner link 4 as shown by an imaginary line in FIGS. It is located further rearward (leftward in FIGS. 44 and 46). If the inner link 4 is attached to the hinge body 3 in this state, the torsion coil spring 7 cannot urge the inner link 4 to rotate. Therefore, when attaching the inner link 4 to the hinge body 3, the protrusion 72 of the torsion coil spring 7 is rotated counterclockwise by an appropriate angle (about 90 °) in FIGS. And the one end part of the inner side link 4 is located in a predetermined position, maintaining the state, and the axis J1 is penetrated in the said one end part. Thereafter, when the protrusion 72 can be freely rotated, the protrusion 72 hits the inner link 4 via the cam member 91, and the torsion coil spring 7 urges the inner link 4 to rotate via the cam member 91. As described above, the attaching operation of the inner link 4 is a very difficult operation because the projecting portion 72 must be rotated against the urging force of the coil spring 7. As shown in FIG. 47, there is a gap into which one end of the outer link 5 enters between the protruding portion 73 of the torsion coil spring 7 and the connecting plate portion 33 of the hinge body 3. It can be easily attached to the hinge body 3.

In order to solve such a problem, the following configuration is adopted in this embodiment. That is, as shown in FIG. 39, the cam member 91 is formed with an engagement protrusion 91e. The engaging protrusion 91e is formed on the surface of the hinge body 3 that faces the side plate portion 31 and protrudes toward the side plate portion 31 side. In addition, the engagement protrusion 91e is disposed at a location spaced from the support shaft J3, which is the rotation center of the cam member 91, in the radial direction.

On the other hand, a recess 31 a is formed on the inner surface of the side plate portion 31 of the hinge body 3. The recess 31a is arranged such that the engaging protrusion 91e enters when the cup member 6 is located between the closed position and the open position. In addition, when the protrusion 72 of the torsion coil spring 7 and the cam member 91 rotate with the rotation of the cup member 6, the engagement protrusion 91a can be freely moved in the recess 31a. .

When the cup member 6 rotates to a position beyond the closed position by a predetermined angle in the direction from the open position to the closed position, the end portion located on the left side (lower side in FIG. 41) of the peripheral side surface of the recess 31a is engaged. It arrange | positions so that the joint protrusion 91e may contact | abut. Here, the predetermined angle is when the protrusion 72 is positioned so that one end of the inner link 4 does not hit the cam member 91 when the inner link 4 is attached to the hinge body 3 via the support shaft J3. For example, an angle of about 5 to 10 °.

In this embodiment, when the coil spring 7, the cam member 91, the spacer 92, the inner link 4 and the outer link 5 are incorporated in the hinge body 3, the cam member 91 and the spacer are inserted into the protrusions 72 and 73 of the torsion coil spring 7. 92 is attached. Then, the torsion coil spring 7 is inserted between the side plate portions 31 and 32 of the hinge body 3. At this time, the coil portion 71 of the torsion coil spring 7 is slightly compressed in the axial direction so that the engaging protrusion 91e does not hit the side plate portion 31. In this state, the torsion coil spring 7 is positioned at a predetermined position with respect to the hinge body 3. Thereafter, the support shaft J <b> 1 is inserted through the coil portion 71 of the torsion coil spring 7. As a result, the torsion coil spring 7, the cam member 91, and the spacer 92 are attached to the hinge body 3.

Next, the cam member 91 is rotated counterclockwise in FIG. 46 about the support shaft J3. When the engaging protrusion 91e that rotates the cam member 91 by a predetermined angle faces the recess 31a, the coil portion 71 extends and the engaging protrusion 91a enters the recess 31a. When the cam member 91 can be freely rotated in this state, the cam member 91 is rotated clockwise by the rotational biasing force of the torsion coil spring 7, and the engaging protrusion 91e hits the end of the recess 31a. . In this state, when one end of each of the inner link 4 and the outer link 5 is attached to the hinge main body 3, each end does not hit the projecting portions 72 and 73 directly or indirectly. Therefore, the inner link 4 and the outer link 5 can be easily attached to the hinge body 3.

In this embodiment, a rotary damper is not used, but a rotary damper may be provided as in the above embodiments.
In this embodiment, a contact member 64 is attached to the shaft portions 62 and 63. The contact member 64 is adapted to abut against the connecting plate portion 53 of the outer link 5 when the cup member 6 rotates to the open position. In other words, the opening position of the cup member 6 is determined by the contact member 64 abutting against the connecting plate portion 53.

In addition, this invention is not limited to said embodiment, A various modification is employable in the range which does not deviate from the summary.
For example, in the above-described embodiment, the cup member 6 is rotatably connected to the hinge body 3 by the two links 4 and 5 on the inner side and the outer side. Another link may be used between 6 and the hinge body 3.
In the above embodiment, the inner link 4 is the first link and the outer link 5 is the second link. However, the inner link 4 may be the second link and the outer link 5 may be the first link. It is a place that can be easily conceived even without a contractor. In that case, for example, the rotary damper 8 is disposed in the outer link 5, the rotor 82 is non-rotatably connected to the outer link 5, and the damper main body 81 is connected to the inner link 4 so as to rotate as the inner link 4 rotates. Is done. Further, the protrusion 73 is brought into contact with the outer link 5 via the cam member 91.
Furthermore, in the above embodiment, the rotary damper 8 in which the annular space 83 is formed between the inner peripheral surface of the accommodating portion 81A of the damper main body 81 and the outer peripheral surface of the rotor 82 is employed as the rotary damper. However, instead of the rotary damper 8, as described in, for example, Japanese Patent Application Laid-Open No. 2006-242253 and Japanese Translation of PCT International Publication No. 2010-528938, the inner peripheral surface of the housing portion of the damper main body and the outer peripheral surface of the rotor A rotary damper in which a fan-shaped or substantially semicircular space is formed therebetween may be used.

J3 Support shaft 1 Hinge device 3 Hinge body (housing side mounting member)
4 Inner link (first link)
5 Outer link (second link)
6 Cup member (door-side mounting member)
7 Torsion coil spring 71 Coil part 72 Protruding part (protruding part)
73 Protrusion (second protrusion)
91 Cam member 91a Cam surface 91b Tube portion 92 Spacer (member to be inserted)
92b Tube portion (second tube portion)

Claims (6)

The housing side mounting member (3), the first and second links (4, 5) having one end rotatably connected to the housing side mounting member (3), and the first and second links (4, 4) 5) The door-side attachment member (6) rotatably connected to the other end of 5) and the first link (4) are urged to rotate, whereby the door-side attachment member (6) is attached to the housing side. A torsion spring (7; 7A) that rotates with respect to the member (3), and a protrusion (72; 75) that protrudes radially outward is provided at one end of the torsion spring (7; 7A). In the hinge device that rotationally biases the first link (4) by the protrusions (72, 75) striking the first link (4),
A cam member (91) formed separately from the protrusion (72; 75) is rotated integrally with the protrusion (72; 75) about the axis of the torsion spring (7; 7A). So that the protrusion (72; 75) abuts against the first link (4) via the cam member (91) so that the cam member (91) has the first link (4). A hinge device that has a cam surface (91a) that strikes against the hinge device. A second projecting portion (73; 76) projecting radially outward is formed at the other end portion of the torsion spring (7; 7A), and the second projecting portion (73: 76) is the second link ( 5), when the second link (5) rotates the door-side mounting member (6) in the same direction as the first link (4), the second projecting portion (73; 76). The hinge device according to claim 1, characterized in that said second link (5) is urged to rotate. The torsion spring (7) is a torsion coil spring made of a metal wire, and the torsion coil spring (7) has a coil portion (71) formed by winding the wire and a coil from both ends of the coil portion. The protrusions (72) and the second protrusions (73) that protrude outward in the radial direction of the respective portions are provided, and the protrusions (72) and the second protrusions (73) are constituted by both ends of the wire. The hinge device according to claim 2, wherein the hinge device is provided. The housing side attachment member (3) is provided with a support shaft (J3) inserted through the coil portion (71) of the torsion coil spring (7), and the cam member (91) is provided with the support shaft ( A cylindrical part (91b) into which one end of J3) is inserted is provided, and this cylindrical part (91b) is fitted to one end of the coil part (71) so as to be relatively rotatable with a gap. The hinge device according to claim 3. On the other end side of the coil portion (71) of the torsion coil spring (7), an inserted member (92) into which the other end portion of the support shaft (J3) is inserted is provided, and this inserted member (92 ) Is provided with a second tube portion (92b) through which the other end portion of the support shaft (J3) is inserted, and the second tube portion (92b) is spaced from the other end portion of the coil portion (71). The hinge device according to claim 4, wherein the hinge device is fitted so as to be relatively rotatable. The inserted member (92) is engaged with the second projecting portion (73) so as to rotate integrally with the second projecting portion (73) about the axis of the coil portion (71). The hinge device according to claim 5.

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