JP2012127168A - Hinge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent early abrasion of a location sliding along with rotation of an attachment member, by using urging means with a weak urging force as urging means for rotatively urging the attachment member.SOLUTION: A base end of a force transfer member 81 is rotatably provided on a second support shaft 74 for rotatably connecting an inside link 72 to a main body portion 3. A leading end of the force transfer member 81 is protruded to the outside from a guide hole 3g that is formed in a top plate portion 3b of the main body portion 3. A leading end of the protruding force transfer member 81 is provided with a pressing portion 81b. A retainer portion 83b is provided at an end that is away from the instantaneous center of rotation of the attachment member 4 when the attachment member 4 is located in a position near a closing position. The pressing portion 81b is pressed against the retainer portion 83b by a helical torsion coil spring 82 so as to rotate the attachment member 4 to a closing position side.

Description

  The present invention relates to a hinge device used when a door is rotatably connected to a housing.

  Generally, this kind of hinge device has a main body part and an attachment member rotatably connected to the main body part via first and second links as described in Patent Document 1 below. ing. And a main-body part is attached to a housing | casing, and an attachment member is attached to a door. Thereby, the door is rotatably attached to the housing via the hinge device.

The main body is provided with a rotation urging means such as a torsion coil spring. The rotation urging means urges the attachment member via the first link or the second link. That is, one end portions of the first and second links are rotatably connected to the main body portion via first and second support shafts parallel to each other, and the other end portions are connected to the mounting member by the first and second support shafts. Are connected to each other via third and fourth support shafts parallel to each other. Therefore, when the rotation urging means urges the attachment member via the first link, the first link is urged to rotate about the first support shaft by the rotation urging means. Then, the rotation-biased first link urges the attachment member to rotate via the third support shaft. When the rotation urging means urges the attachment member via the second link, the second link urges the attachment member via the fourth support shaft. Thus, the rotation biasing force of the rotation biasing unit on the mounting member acts on the mounting member via the third support shaft or the fourth support shaft.

Japanese Patent Laid-Open No. 60-112973

  The instantaneous rotation center of the mounting member is an intersection of a straight line connecting the first support shaft and the third support shaft and a straight line connecting the second support shaft and the third support shaft, and from the first support shaft to the third support shaft. It is located in front of the direction toward the front and in the direction toward the fourth support shaft from the second support shaft. On the other hand, the third and fourth support shafts on which the rotation urging force of the mounting member acts are arranged at positions close to the instantaneous rotation center of the mounting member. For this reason, the distance between the instantaneous rotation center of the mounting member and the third or fourth support shaft, that is, the length of the arm of the rotational moment for rotating the mounting member is relatively short. Therefore, in order to urge the mounting member to rotate, rotation urging means having a large rotation urging force must be used. However, when the rotational biasing force of the rotational biasing means is increased, the portion that comes into sliding contact with the rotation of the mounting member, for example, between the first link and the third support shaft, or between the second link and the fourth support shaft. A large frictional resistance is generated. As a result, there was a problem that each sliding contact portion was worn out early.

In order to solve the above problem, according to a first aspect of the present invention, a main body portion and a main body portion are rotatably connected between a closed position and an open position via first and second links. An attachment member; and a rotation urging means provided on the main body portion for urging the attachment member to rotate with respect to the main body portion, wherein one end portions of the first and second links are the main body portion. The other end portions of the first and second links are connected to the mounting member in parallel with the first and second support shafts through third and second support shafts parallel to each other. In the hinge device rotatably connected via the fourth support shaft, the rotation urging means is provided inside the main body with a part thereof protruding from the main body, and is external to the main body. A part of the rotation urging means protruding in contact with the mounting member The mounting member is characterized in that it is rotationally urged me.
In this case, the part of the rotation urging means that press-contacts the mounting member is in a direction perpendicular to the axis of the first to fourth support shafts and in a direction away from the instantaneous rotation center of the mounting member. It is desirable that the main body is protruded from the outside.
The main body part is formed in a cross-sectional "U" shape by a pair of side plate parts arranged to face each other and a top plate part that connects one side parts of the pair of side plate parts, The second support shaft is disposed with its axis line facing the side plate portion, and both end portions of the first support shaft and both end portions of the second support shaft are supported by the side plate portion. It is desirable that a notch is formed, and a part of the rotation urging means is protruded outside the main body through the notch.
The rotation urging means includes a force transmission member that is displaceably provided inside the main body, and a urging means that displaces the force transmission member, and a part of the force transmission member is separated from the main body portion. It is desirable to protrude outward.
In order to solve the above-mentioned problem, the second aspect of the present invention is connected to the main body portion and the main body portion so as to be rotatable between the closed position and the open position via the first and second links. An attachment member; and a rotation urging means provided on the main body portion for urging the attachment member to rotate with respect to the main body portion, wherein one end portions of the first and second links are the main body portion. The other end portions of the first and second links are connected to the mounting member in parallel with the first and second support shafts through third and second support shafts parallel to each other. In the hinge device rotatably connected via the fourth support shaft, an action portion on which the rotation urging force of the rotation urging means acts is provided on the attachment member, and the instantaneous rotation center of the attachment member and the action portion are provided. Between the momentary rotation center of the mounting member and the third and fourth supports. As it is longer than the distance between each of the shaft, and wherein said acting portion is disposed.
In this case, it is desirable that the action direction of the urging force of the rotation urging means acting on the action portion gradually changes as the mounting member rotates.
The rotation urging means has a force transmission member provided in the main body part and a urging means for rotating and urging the force transmission member, and one end of the force transmission member is located inside the main body part. The other end of the force transmission member protrudes outward from the main body, and the protruding other end presses against the action portion of the attachment member, so that the attachment member is attached. It is desirable to be rotated by the biasing means via the force transmission member.
A rotation prevention mechanism is provided between the first link and the force transmission member, and the rotation prevention mechanism is configured such that the attachment member moves from one of the open position and the closed position to the other position. When the force transmission member is rotated by the biasing means until the release position is reached by a predetermined angle from the other position. It is desirable to allow the force transmitting member to be rotated to the other position side by the biasing means when the mounting member is fixed at the stop position and the mounting member exceeds the release position.
The rotation prevention mechanism includes a first engagement portion provided on the first link and a second engagement portion provided on the force transmission member, and any one of the first and second engagement portions. One of them is constituted by a concave first circular arc surface having the center of curvature as the axis of the first support shaft, and the other is formed by a convex second circular arc surface having the axis of the first support shaft as the center of curvature. The first arc surface and the second arc surface are in contact with each other so as to be rotatable about the axis of the first support shaft until the mounting member reaches the release position. When the rotation is blocked and the mounting member exceeds the release position, it is desirable that the rotation of the force transmission member is allowed by separating the first arc surface and the second arc surface from each other.

According to the first aspect of the present invention having the above-described characteristic configuration, a part of the rotation urging means is brought into press contact with the attachment member in order to urge the attachment member to rotate, and the part is externally attached from the main body. Protruding. Therefore, the part where the said part contacts a press member can be arrange | positioned far from the instantaneous rotation center of an attachment member. Here, assuming that the rotational urging force of the rotational urging means is constant, the rotational urging force of the rotational urging means that acts on the mounting member by the amount that the part is arranged far from the instantaneous rotation center of the mounting member ( (Rotational moment) can be increased. In other words, the rotation urging force of the rotation urging means can be weakened by the amount that can increase the rotation urging force acting on the mounting portion. Therefore, premature wear of each portion that comes into sliding contact with the rotation of the mounting member can be prevented.
According to the second aspect of the present invention, the distance between the instantaneous rotation center of the mounting member and the action portion is determined by the distance between the instantaneous rotation center of the mounting member and each of the third and fourth support shafts. Therefore, assuming that the rotational urging force of the rotational urging means is constant, the rotational urging force (rotational moment) for rotating the mounting member can be increased by an amount corresponding to the increase in the distance. In other words, the rotation urging force of the rotation urging means can be weakened by the amount that can increase the rotation urging force acting on the mounting portion. Therefore, premature wear of each portion that comes into sliding contact with the rotation of the mounting member can be prevented.

FIG. 1 is a perspective view showing a first embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the main body of the embodiment is removed from the base. FIG. 3 is an exploded perspective view showing the base of the embodiment. FIG. 4 is an exploded perspective view showing the main body portion, the mounting member, and the members provided thereon according to the embodiment. FIG. 5 is a plan view showing the embodiment in a state where the mounting member is rotated to the closed position. FIG. 6 is an enlarged cross-sectional view taken along line XX of FIG. 5 showing the main body portion and the attachment member of the embodiment attached to the housing and the door, respectively. FIG. 7 is a partially omitted cross-sectional view similar to FIG. 6 showing the same embodiment in a state where the mounting member is located at the open position. FIG. 8 is a partially omitted cross-sectional view similar to FIG. 6 showing the embodiment in a state in which the mounting member is rotated by a predetermined angle from the open position toward the closed position. FIG. 9 shows the same embodiment as in FIG. 6 in a state where the mounting member rotates from the open position to the flat position until the force transmission member starts to contact the contact portion of the mounting member. FIG. FIG. 10 is a view similar to FIG. 6 showing the embodiment in a state where the mounting member is rotated from the open position toward the closed position until the force transmission member is rotated to the neutral position where the mounting member is positioned at the thought position. FIG. FIG. 11 is a partially omitted cross-sectional view similar to FIG. 6 showing the embodiment in a state in which the mounting member is further rotated from the position shown in FIG. 10 from the open position toward the closed position. 12 is a partially omitted cross-sectional view similar to FIG. 6 showing the embodiment in a state in which the mounting member is further rotated from the position shown in FIG. 11 from the open position toward the closed position. FIG. 13 is a partially omitted cross-sectional view similar to FIG. 6, showing the embodiment in a state where the mounting member is further rotated from the position shown in FIG. 12 from the open position toward the closed position. FIG. 14 is a view showing the first link used in the embodiment, FIG. 14 (A) is a perspective view thereof, FIG. 14 (B) is a front view thereof, and FIG. 14 (C) is a view thereof. FIG. 14D is a side view, FIG. 14D is a plan view thereof, and FIG. 14E is a cross-sectional view taken along line XX of FIG. 14B. FIG. 15 is a perspective view showing a force transmission member used in the embodiment. FIG. 16 is a plan view of the force transmission member. FIG. 17 is a rear view of the force transmission member. FIG. 18 is a side view of the force transmission member. FIG. 19 is a cross-sectional view taken along line XX of FIG. It is a perspective view which shows 2nd Embodiment of this invention. It is a perspective view of the main-body part used in the embodiment. It is a perspective view of the force transmission member used in the embodiment. It is a front view of the same force transmission member. It is a side view of the same force transmission member. It is sectional drawing similar to FIG. 7 which shows the same embodiment. It is sectional drawing similar to FIG. 9 which shows the same embodiment. It is sectional drawing similar to FIG. 10 which shows the same embodiment. It is sectional drawing similar to FIG. 11 which shows the same embodiment. It is sectional drawing similar to FIG. 12 which shows the same embodiment. It is a perspective view which shows 3rd Embodiment of this invention. It is a perspective view which shows the main-body part used in the embodiment. It is a perspective view which shows the outer side link used in the same embodiment. It is a perspective view which shows the force transmission member used in the embodiment. It is the perspective view which looked at the same force transmission member from the direction different from FIG. It is a front view of the same force transmission member. It is a side view of the same force transmission member. It is sectional drawing which follows the XX line of FIG. It is sectional drawing similar to FIG. 7 which shows the same embodiment. It is sectional drawing which shows the same embodiment in the state when an attachment member is located in an intermediate position. It is sectional drawing which shows the same embodiment in the state when an attachment member is located in the 2nd urging | biasing range. It is sectional drawing which shows the embodiment in the state in which the attachment member is located in a cancellation | release position. It is sectional drawing which shows the same embodiment in the state which the attachment member is located in the position between a cancellation | release position and a closed position. FIG. 41 is a cross-sectional view showing the same embodiment in a state in which the mounting member is further rotated from the position shown in FIG. 40 to the closed position side and is positioned at a position closer to the closed position by a predetermined angle.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 to 19 show a first embodiment of the present invention. As shown in FIGS. 1, 2, 5, and 6, the hinge device 1 of this embodiment includes a base portion 2, a main body portion 3, and a mounting member 4.

As shown in FIG. 6, the base portion 2 is fixed to the inner surface of the right side wall portion of the housing B whose front surface portion is open, and is also fixed to the front end portion of the inner surface. The main body 3 is detachably attached to the base 2. The attachment member 4 is attached to the right end portion of the back surface of the door D. And the attachment member 4 is the outer side link (1st link) 71 and the inner side link (2nd link) which are mentioned later to the front side edge part in FIG. 6 (left side edge part. Hereafter, it is called a front-end | tip part). It is connected via 72 to be rotatable in the horizontal direction. The attachment member 4 is rotatable between a closed position shown in FIG. 6 and an open position shown in FIG. Therefore, the door D can also rotate between the closed position and the open position. However, in the state where the door D is attached to the housing B via the hinge device 1, the position where the door D is slightly before the closed position from the open position toward the closed position (a position just before about 1 ° to 2 °). The door D hits the front surface of the housing B and cannot be further rotated to the closed position side. Therefore, in a state where the door D is supported by the housing B, the door D and the attachment member 4 do not rotate to the closed position shown in FIG. In addition, about each structure of this 1st Embodiment and 2nd and 3rd Embodiment mentioned later, it demonstrates based on the front-back left-right direction and the up-down direction (front-back direction of a paper surface) of the housing B shown in FIG. And Of course, the present invention is not limited to such a direction.

As shown particularly in FIGS. 2 and 3, the base 2 has a base material 5, a first movable member 6, and a second movable member 7.

As shown in FIG. 3 in particular, the substrate 5 has a support portion 5a having a substantially rectangular cross section with the longitudinal direction directed in the front-rear direction (the right-and-left direction in FIG. 3). The support portion 5a is solid, but may be hollow by forming it in a cross-sectional “U” shape. In that case, the support part 5a is arrange | positioned toward the right side wall part of the housing | casing B in the open part. Fixing plate portions 5b and 5b projecting upward and downward are formed on both side surfaces of the support portion 5a facing in the vertical direction (right and left direction in FIG. 3). The base material 5 is fixed to the inner surface of the right side wall portion of the case B by tightening screws (not shown) screwed into the right side wall portion of the case B through the fixing plate portions 5b and 5b.

The first movable member 6 has two side plate portions 6a and 6a that face each other, and a top plate portion 6b that connects the left side portions of the side plate portions 6a and 6a. As a result, the first movable member 6 is formed in a substantially “U” shape in cross section. The first movable member 6 has an open portion opposite to the top plate portion 6b facing the right side wall portion of the housing B, the longitudinal direction of the side plate portion 6a is directed in the front-rear direction, and the thickness direction of the side plate portion 6a is moved up and down. Arranged in a direction. Therefore, the side plate portions 6a and 6a are opposed to each other in the vertical direction.

  Between the side plate portions 6a, 6a of the first movable member 6, a support portion 5a of the base material 5 is inserted. The distance between the mutually opposing inner surfaces of the side plate portions 6a, 6a is larger than the vertical width of the support portion 5a. Accordingly, the first movable member 6 is movable in the vertical direction with respect to the base material 5 by the difference between the distance between the side plate portions 6a, 6a and the vertical width of the support portion 5a.

  Guide portions 6c and 6c projecting upward and downward are provided at the intermediate portions in the front-rear direction of the side plate portions 6a and 6a of the first movable member 6, respectively. The guide portions 6c and 6c are inserted into guide recesses 5c and 5c provided in the solid plate portions 5b and 5b of the base member 5 so as to be movable in the vertical direction and immovable in the front-rear direction. Therefore, the first movable member 6 can move in the vertical direction with respect to the base material 5 but cannot move in the front-rear direction. Moreover, the front end portion and the rear end portion of the first movable member 5 are connected via the fixed shafts 8 and 9 so as to be movable in the vertical direction and immovable in the front-rear direction and the left-right direction. Therefore, the 1st movable member 6 can move only to the up-down direction with respect to the base material 5, and cannot move to the front-back direction and the left-right direction. The position of the first movable member 6 is adjusted in the vertical direction with respect to the substrate 5 by a first position adjusting mechanism 20 described later.

  Similarly to the first movable member 6, the second movable member 7 includes a pair of side plate portions 7 a and 7 a that are vertically opposed to each other and a top plate portion 7 b that integrally connects the left side portions of the pair of side plate portions 7 a and 7 a. have. The second movable member 7 is arranged in the same posture as the first movable member 6. Between the pair of side plate portions 7a, 7a of the second movable member 7, the side plate portions 6a, 6a and the top plate portion 6b of the first movable member 6 are inserted. The distance between the inner surfaces of the pair of side plate portions 7 a, 7 a is set to be substantially the same as the distance between the outer surfaces of the pair of side plate portions 6 a, 6 a of the first movable member 6. Thereby, although the 2nd movable member 7 can move to the front-back direction with respect to the 1st movable member 6, it cannot move to the up-down direction. Accordingly, the second movable member 7 moves together with the first movable member 6 with respect to the base material 5 in the vertical direction, but moves independently with respect to the base material 5 and the first movable member 6 in the front-back direction. To do.

  Long holes 7c extending in the front-rear direction are formed in the rear end portions of the side plate portions 7a, 7a of the second movable member 7, respectively. The upper and lower ends of the fixed shaft 9 penetrating the side plate portions 6a, 6a of the first movable member 6 are inserted into the long holes 7c, 7c so as to be movable in the longitudinal direction of the long hole 7c and to be rotatable. ing. An engagement groove 7d is formed at the front end of the top plate portion 7b. An adjusting screw 10 having an axis line in the left-right direction is engaged with the engagement groove 7d so as not to move in the left-right direction and the up-down direction, and to be movable in the front-rear direction. Moreover, the adjusting screw 10 is rotatable about the axis of the adjusting screw 10 with respect to the engaging groove 7d. The right end portion (lower end portion in FIG. 3) of the adjustment screw 10 is screwed into a screw hole 6 d formed at the distal end portion of the top plate portion 6 b of the first movable member 6. Therefore, when the adjusting screw 10 is rotated in the forward and reverse directions, the front end portion of the second movable member 7 rotates in the left-right direction around the fixed shaft 9. Thereby, the position of the tip of the second movable member 7 is adjusted in the left-right direction.

  As shown in FIG. 6, a first position adjustment mechanism 20 is provided between the base material 5 and the first movable member 6. The first position adjustment mechanism 20 is for adjusting the position of the first movable member 6 in the vertical direction with respect to the base material 5, and includes a guide plate 21 and a first adjustment shaft 22.

As shown in FIG. 3, the guide plate 21 has a substantially rectangular flat plate shape that is long in the front-rear direction, and is arranged with its thickness direction facing the left-right direction. The width of the guide plate 21, that is, the vertical width, is set slightly wider than the vertical width of the guide hole 6 e formed in the top plate portion 6 b of the first movable member 6 and extending in the front-rear direction. The guide plate 21 is press-fitted into the guide hole 6e so as to be movable in the front-rear direction and not movable in the vertical direction. Therefore, the guide plate 21 moves together with the first movable member 6 in the vertical direction, but moves relative to the first movable member 6 in the front-rear direction. In this case, since the guide plate 21 is press-fitted into the guide hole 6e, a relatively large friction is generated between the upper and lower side surfaces of the guide plate 21 and the upper and lower side portions of the inner peripheral surface of the guide hole 6e. Resistance is generated. Therefore, the guide plate 21 does not move in the front-rear direction unless a force greater than its frictional resistance is applied. Conversely, by applying a force to overcome the frictional resistance to the guide plate 21, the guide plate 21 can be moved in the front-rear direction with respect to the first movable member 6. The guide plate 21 may be slidably inserted in the front-rear direction with almost no frictional resistance in the guide hole 6e.

As shown in FIG. 6, the first adjusting shaft 22 has a first fitting portion 22a having a circular cross section. The 1st fitting part 22a is arrange | positioned toward the left-right direction (FIG. 6 up-down direction). The outer diameter of the first fitting portion 22a is substantially the same as the inner diameter of the first fitting hole 21a formed in the front end portion of the guide plate 21, and the first fitting portion 22a is formed in the first fitting hole 21a. They are fitted so as to be rotatable and relatively movable in the left-right direction. Moreover, the first fitting portion 22a is fitted in the first fitting hole 21a so as not to be relatively movable in the vertical direction and the front-rear direction. Therefore, when the first fitting portion 22a moves in the vertical direction, the guide plate 21 and the first movable member 6 move in the vertical direction accordingly. However, when the first fitting portion 22a moves in the front-rear direction, the guide plate 21 only moves in the front-rear direction in the guide hole 6e, and the first movable member 6 does not move in the front-rear direction. The first fitting portion 22a may be fitted in the first fitting hole 21a so as not to move in the left-right direction.

A plurality of protrusions 21b extending in the circumferential direction along the inner peripheral surface of the first fitting hole 21a are formed at the left end portion of the inner peripheral surface of the first fitting hole 21a. Each protrusion 21b is inclined to the right as it goes inward in the radial direction of the first fitting hole 21a. A large number of fine engaging teeth are formed in the circumferential direction at the tip of the protruding portion 21b. Each engagement tooth can be displaced in the axial direction (left-right direction) of the first fitting hole 21a by the elastic deformation of the protrusion 21b.

The outer peripheral portion of the left end surface of the first fitting portion 22a faces the protruding portion 21b. A large number of fine engagement grooves are formed in the circumferential direction on the outer peripheral portion of the left end surface. Then, the engagement teeth of the protrusions 21b are engaged with the respective engagement grooves, so that the rotation of the first adjustment shaft 22 is prevented by a predetermined amount of force. When the first adjusting shaft 22 is rotated with a force of a predetermined magnitude or more, the distal end portion of the protruding portion 21b is elastically deformed so as to be separated from the left end surface of the first fitting portion 22a to the left, and the engaging teeth are Escape from the engagement groove. Therefore, the first adjustment shaft 22 can be rotated by applying a force of a predetermined magnitude or more. Of course, after the first adjusting shaft 22 is rotated, the engaging teeth are engaged with the engaging grooves, so that the rotation of the first adjusting shaft 22 is stopped at a rotational position with a predetermined amount of force.

A first eccentric shaft portion 22b is formed on the right end surface (the lower end surface in FIG. 3) facing the base material 5 side of the first fitting portion 22a. The first eccentric shaft portion 22b has a circular cross section. The axis of the first eccentric shaft portion 22b is parallel to the axis of the first fitting portion 22a, and is spaced apart from the axis of the first fitting portion 22a in the radial direction of the first fitting portion 22a. That is, the first eccentric shaft portion 22b is eccentric with respect to the first fitting portion 22a.

A first adjustment recess 23 is formed on the left side surface (upper side surface in FIG. 3) of the support portion 5 a facing the top plate portion 6 b of the first movable member 6. The first adjustment recess 23 extends in the front-rear direction. A first eccentric shaft portion 22b is rotatably inserted into the first adjustment recess 23. Moreover, the first eccentric shaft portion 22b is inserted into the first adjustment recess 23 so as to be movable in the front-rear direction and not movable in the vertical direction. Therefore, when the first adjustment shaft 22 is rotated in the forward / reverse direction around the axis of the first fitting portion 22a, the first eccentric shaft portion 22b moves in the first adjustment recess 23 in the front-rear direction, 1 The fitting part 22a is moved to the up-down direction. As a result, the first movable member 6 is moved in the vertical direction with respect to the base material 5 via the guide plate 21. Therefore, the vertical position of the first movable member 6 relative to the base material 5 can be adjusted by rotating the first adjustment shaft 22 in the forward and reverse directions. Since the second movable member 7 is connected to the first movable member 6 so as not to move in the vertical direction, the second movable member 7 is also moved in the first direction when the position of the first movable member 6 is adjusted in the vertical direction. The position is adjusted in the vertical direction together with the member 6.

A first head 22c is formed at the center of the left end surface of the first fitting portion 22a, that is, at the center of the end surface of the first fitting portion 22a facing the top plate portion 7b of the second movable member 7. Yes. The first head portion 22c has a circular cross section and is formed such that its axis coincides with the axis of the first fitting portion 22a. The first head portion 22c is fitted in a first connection hole 24 formed in the top plate portion 7b of the second movable member 7 so as not to move in the vertical direction and the front-rear direction. Therefore, when the first adjustment shaft 22 is rotated in the forward and reverse directions, the second movable member 7 moves in the vertical direction together with the first movable member 6. However, as described above, the second movable member 7 does not move with the first movable member 6 in the front-rear direction, but moves with the guide plate 21 in the front-rear direction with respect to the first movable member 6. . The second movable member 7 is connected to the first movable member 6 so as not to move in the vertical direction, and moves together with the first movable member 6 in the vertical direction. Therefore, the first head portion 22 c is not necessarily fitted into the first first connection hole 24 of the second movable member 7. When not fitting, the 1st connection hole 24 is unnecessary.

The first fitting portion 22 a of the first adjustment shaft 22 is fitted into the first fitting hole 21 a of the guide plate 21, and the head portion 22 c is fitted into the first connection hole 24 of the top plate portion 7 b of the second movable member 7. As is apparent from the fact that the first eccentric shaft portion 22b is inserted into the first adjustment recess 23 of the base member 5, the first adjustment shaft 22 moves the top plate portion 6b of the first movable member 6 left and right. It penetrates in the direction. In this way, passing through the top plate portion 6b of the first movable member 6 also applies to the second adjustment shaft 32 of the second position adjustment mechanism 30 described below.

  As shown in FIG. 6, a second position adjusting mechanism 30 is provided between the base material 5 and the second movable member 7. The second position adjustment mechanism 30 is for adjusting the position of the second intermediate portion 7 in the front-rear direction with respect to the base material 5, and includes a guide plate 21 and a second adjustment shaft 32.

The rear end portion of the guide plate 21 is formed with a second fitting hole 21c that penetrates the guide plate 21 in the left-right direction. The first fitting hole 21c has the same shape and the same dimensions as the first fitting hole 21a, and a plurality of protrusions 21d having the same shape and the same dimensions as the protrusions 21b are formed on the inner peripheral surface thereof. Has been. On the other hand, the second adjustment shaft 32 has the same shape and the same dimensions as the first adjustment shaft 22. Accordingly, the second adjustment shaft 32 includes a second fitting portion 32a and a second eccentric shaft portion corresponding to the first fitting portion 22a, the first eccentric shaft portion 22b, and the first head portion 22c of the first adjustment shaft 22, respectively. 32b and a second head 32c. A large number of engagement grooves are formed side by side in the circumferential direction on the outer peripheral portion of the left end surface of the second fitting portion 32a.

  The second fitting portion 32a of the second adjustment shaft 32 is fitted in the second fitting hole 21b of the guide plate 21 so as to be rotatable and movable in the left-right direction. Moreover, the second fitting portion 32a is fitted in the second fitting hole 21b so as not to move in the vertical direction and the front-rear direction. Therefore, the second fitting portion 32 a moves in the vertical direction and the front-rear direction together with the guide plate 21. In other words, when the second fitting portion 32a moves in the vertical direction and the front-rear direction, the guide plate 21 moves in the vertical direction and the front-rear direction together with the second fitting portion 32a. The second fitting portion 32a may be fitted in the second fitting hole 21b so as not to move in the left-right direction.

  A large number of engaging teeth formed at the tip of the protruding portion 21d are engaged with the large number of engaging grooves formed in the second fitting portion 32a. Accordingly, the second adjustment shaft 32 is prevented from rotating with respect to the second fitting hole 21b by a force having a predetermined magnitude. In other words, like the first adjustment shaft 22, the second adjustment shaft 32 can be rotated by applying a force of a predetermined magnitude or more.

  A second adjustment recess 33 is formed on the side surface of the support portion 5a where the first adjustment recess 23 is formed. The second adjustment recess 33 is disposed behind the first adjustment recess 23 and extends in the vertical direction. A second eccentric shaft portion 32b of the second adjustment shaft 32 is inserted into the second adjustment recess 33 so as to be rotatable and movable in the vertical direction. And the 2nd eccentric shaft part 32b is inserted in the 2nd adjustment recessed part 33 so that it cannot move to the front-back direction. Therefore, when the second adjustment shaft 32 is rotated about the axis of the second fitting portion 32a, the second eccentric shaft portion 32b moves up and down in the second adjustment recess 33, and the second fitting portion 32a. Is moved back and forth. As a result, the guide plate 21 moves in the front-rear direction in the guide hole 6e.

A second connection hole 34 is formed in the top plate portion 7 b of the second movable member 7. The second connection hole 34 is disposed behind the first connection hole 24. The second head 32c is fitted in the second connecting hole 34 so as to be rotatable and movable in the left-right direction. In addition, the second head portion 32c is fitted in the second connecting hole 34 so as not to move in the vertical direction and the front-rear direction. Therefore, when the second fitting portion 32a moves in the front-rear direction, the second movable member 7 moves in the front-rear direction together with the second fitting portion 32a. Therefore, the position of the second movable member 7 can be adjusted in the front-rear direction with respect to the base material 5 and the first movable member 6 by rotating the second adjustment shaft 32 in the forward and reverse directions.

  Here, when the second movable member 7 moves in the front-rear direction, the guide plate 21 moves in the front-rear direction with respect to the first movable member 6, and as a result, the first adjustment shaft 22 moves with respect to the base material 5. Move back and forth. Accordingly, the first eccentric shaft portion 22b of the first adjustment shaft 22 is fitted to the first adjustment recess portion 23 of the base member 5 so as to be movable in the front-rear direction. Therefore, the movement of the second movable member 7 in the front-rear direction is not hindered by the base material 5 and the first adjustment shaft 22. Similarly, when the first movable member 6 moves in the vertical direction, the second adjustment shaft 32 moves in the vertical direction with respect to the substrate 5, but the second eccentric shaft portion 32 b of the second adjustment shaft 32 Since the second adjustment recess 33 of the base material 5 is inserted so as to be movable in the vertical direction, the vertical movement of the first movable member 6 is inhibited by the base material 5 and the second adjustment shaft 32. Absent.

Thus, by rotating the first adjustment shaft 22, the first and second movable members 6, 7 can be adjusted in the vertical direction with respect to the substrate 5, and the second adjustment shaft 32 is rotated. Thus, the position of the second movable member 7 can be adjusted in the front-rear direction with respect to the base member 5 and the first movable member 6. On the other hand, after the position adjustment, the first and second movable members 6 and 7 have the frictional resistance generated between the guide plate 21 and the guide hole 6e, and the engagement teeth of the protruding portion 21b of the first fitting hole 21a. And the engagement groove of the first adjustment shaft 22 and the engagement of the protrusion 21d engagement tooth of the second fitting hole 21c and the engagement groove of the second adjustment shaft 32 to the base 5 The position is fixed by the force of the size of. When a fixing mechanism for fixing the first and second movable members 6, 7 to the substrate 5 is provided between the substrate 5 and the first and second movable members 6, 7, Friction resistance with respect to the guide hole 6e and engagement between the engagement tooth and the engagement groove are unnecessary.

The main body 3 includes a pair of side plate portions 3a and 3a arranged to face each other, and a top plate portion 3b for connecting the left side portions of the pair of side plate portions 3a and 3a. 3a, 3a and the top plate portion 3b are formed in a substantially “U” cross section. The main body 3 is disposed with the longitudinal direction thereof in the front-rear direction, the opposing direction of the side plate portions 3a, 3a in the up-down direction, and the open portion directed toward the right side (second movable member 7 side). Between the side plate portions 3a, 3a, the second movable member 7 is inserted in a detachable manner. The distance between the mutually opposing inner surfaces of the side plate portions 3a, 3a is set to be approximately equal to the distance between the outer surfaces of the side plates 7a, 7a of the second movable member 7. Therefore, when the second movable member 7 is inserted between the side plate portions 3a and 3a, the main body portion 3 is connected to the second movable member 7 so as not to move in the vertical direction.

The distal end portion of the main body 3 is detachably attached to the distal end portion of the second movable member 7 via the first engagement mechanism 40. On the other hand, the rear end portion of the main body portion 3 is detachably attached to the rear end portion of the second movable member 7 via the second engagement mechanism 50.

First, the first engagement mechanism 40 will be described. As shown in FIGS. 2, 3, and 6, the front end surfaces of the side plates 7 a and 7 a of the second movable member 7 are opened forward. First engaging recesses 41 are respectively formed. On the other hand, at both ends of the side plate portions 3a, 3a of the main body portion 3 on the base material 5 side, as shown in FIGS. Each part is attached. The first engagement shaft 42 can be inserted into the first engagement recess 41 from the opening to the bottom by moving the main body 3 backward while facing the opening of the first engagement recess 41. is there. In a state where the first engagement shaft 42 is inserted up to the bottom of the first engagement recess 41, the distal end portion of the main body portion 3 cannot move in the left-right direction and moves rearward to the distal end portion of the second movable member 7. Locked impossible. In this way, the tip of the main body 3 is detachably attached to the tip of the second movable member 7.

The first engagement shaft 42 can also be inserted into the first engagement recess 41 by sliding an inclined surface 43 formed at the tip of the second movable member 7. That is, as shown in FIGS. 2 and 3, an inclined surface 43 extending from the end on the top plate 7 b side to the first engagement recess 41 is formed at the tip of the side plate 7 a of the second movable member 7. ing. The inclined surface 43 is inclined so as to approach the first engagement concave portion 41 from the top plate portion 7b side toward the front. Therefore, when the main body 3 is moved forward with the first engagement shaft 42 pressed against the end of the inclined surface 43 on the top plate portion 7b side, the first engagement shaft 42 moves forward on the inclined surface 43. Slide toward And if it passes through the inclined surface 43, it will reach the open part of the first engaging recess 41. Thereafter, the first engagement shaft 42 can be inserted into the first engagement recess 41 by moving the main body 3 backward.

Next, the second engagement mechanism 50 will be described. As shown in FIGS. 2, 3, and 6, a second engagement shaft 51 whose longitudinal direction is directed vertically is fixed at the rear end of the side plate portions 7 a and 7 a of the second movable member 7. Is provided. On the other hand, on the side plate parts 3a, 3a of the main body part 3, support shafts 52 with the longitudinal direction oriented in the vertical direction are provided in a fixed position. An operation member 53 is rotatably supported on the support shaft 52. The operation member 53 can rotate between the engagement position shown in FIG. 6 and the release position spaced from the engagement position by a predetermined angle in the counterclockwise direction in FIG. The operation member 53 is biased from the release position toward the engagement position by the biasing force of the torsion coil spring 54 provided on the support shaft 53.

As shown in FIGS. 4 and 6, a second engagement recess 53 a is formed on the front surface of the operation member 53. The second engagement recess 53a is opened forward, and when the operation member 53 is rotated from the release position to the engagement position, the second engagement shaft 51 is moved into the second engagement recess 53a. Relatively enters until it hits the bottom. The position of the operation member 53 when the second engagement shaft 51 hits the bottom of the second engagement recess 53a is the engagement position. In the state where the operation member 53 is located at the engagement position, the engagement of the second engagement shaft 51 and the second engagement recess 53a prevents the main body portion 3 from moving in the left-right direction, and the main body portion. 3 is prevented by the biasing force of the torsion coil spring 54. In this manner, the rear end portion of the main body portion 3 is detachably attached to the rear end portion of the second movable member 7. Of course, when the engagement member 53 is rotated from the engagement position to the release position against the biasing force of the torsion coil spring 54, the second engagement shaft 51 escapes from the second engagement recess 53a. Thereby, the engagement state between the rear end portion of the main body portion 3 and the rear end portion of the second movable member 7 can be released.

The operation member 53 is formed with an inclined surface 53b. The inclined surface 53b is disposed on the right side (lower side in FIG. 6) following the second engaging recess 53a, and is inclined to the right as it goes rearward. In addition, as shown in FIG. 6, the inclined surface 53 b rotates the main body 3 clockwise around the first engagement shaft 42 engaged with the first engagement recess 41, and the rear end of the inclined surface 53 b is the second engagement. The inclined surface 53 b is disposed so as to abut against the second engagement shaft 51 when approaching the combined shaft 51. When the main body 3 is further rotated in the clockwise direction in a state where the inclined surface 53b is in contact with the second engagement shaft 51, the operating member 53 is biased by the torsion coil spring 54 by the second engagement shaft 51 and the inclined surface 53b. Against this, it is rotated from the engagement position to the release position side. When the operation member 53 rotates, the second engagement shaft 51 relatively moves forward on the inclined surface 53b accordingly. When the second engagement shaft 51 gets over the inclined surface 53 b (the position at which the operation member 53 is slightly counterclockwise from the position of the operation member 53 at this time is the release position), the operation member 53 is twisted by the torsion coil spring 54. It is rotated to the engagement position. As a result, the second engagement shaft 51 is inserted into the second engagement recess 53a until it hits the bottom from the open portion.

The main body 3 can be attached to the second movable member 7 by any of the following three methods.
In the first attachment method, first, the first engagement shaft 42 is inserted into the first engagement recess 41. In this state, the main body 3 is rotated clockwise about the first engagement shaft 42, and the rear end of the main body 3 is brought closer to the rear end of the second movable member 7. Then, as described above, the inclined surface 53 b abuts against the second engagement shaft 51. Thereafter, when the main body 3 is further rotated in the clockwise direction, the operation member 53 is rotated in the direction from the engagement position toward the release position (counterclockwise in FIG. 6) against the urging force of the torsion coil spring 54. Be made. When the second engagement shaft 51 gets over the inclined surface 53b, the operation member 53 is rotated to the engagement position side by the torsion coil spring 54, and the second engagement shaft 51 enters the second engagement recess 53a. Engage. In this state, the movement of the main body 3 in the left-right direction is caused by the engagement between the first engagement shaft 42 and the first engagement recess 41 and the engagement between the second engagement shaft 51 and the second engagement recess 53a. Be blocked. Further, the first engagement shaft 42 is pressed against the bottom surface of the first engagement recess 41 by the biasing force of the torsion coil spring 54, and the second engagement shaft 51 is pressed against the bottom surface of the second engagement recess 53a. As a result, the movement of the main body 3 in the front-rear direction is prevented. Of course, the movement of the main body portion 3 in the vertical direction is blocked by the side plate portions 7 a and 7 a of the second movable member 7. Thereby, the main-body part 3 is attached to the 2nd movable member 7 so that attachment or detachment is possible in a fixed state.

In the second attachment method, the second engagement shaft 51 is pre-engaged with the second engagement recess 53a, contrary to the first attachment method. In this state, the main body 3 is rotated around the second engagement shaft 51, and the tip of the main body 3 is brought close to the tip of the second movable member 7. Then, the first engagement shaft 42 hits the inclined surface 43. When the front end of the main body 3 is further moved closer, the first engagement shaft 42 slides forward on the inclined surface 43. At this time, the main body portion 3 moves forward as the first engagement shaft 42 moves forward, so that the operation member 53 is pushed backward by the second engagement shaft 51 and the engagement position side. To the release position. Thereafter, when the first engagement shaft 42 gets over the inclined surface 43, the first engagement shaft 42 can enter the first engagement recess 41. Then, the operation member 53 is rotated to the engagement position by the torsion coil spring 54, and the main body 3 is moved rearward accordingly. The first engagement shaft 42 is inserted into the first engagement recess 41 until it hits the bottom of the main body portion 3 by moving backward. Thus, the main body 3 is detachably attached to the second movable member 7.

In the third method, the first engagement shaft 42 and the second engagement shaft 51 are simultaneously brought into contact with the inclined surfaces 43 and 53b, respectively. In this state, when the main body 3 is moved closer to the second movable member 7, the first engagement shaft 42 moves forward on the inclined surface 43, and the second engagement shaft 51 moves rearward on the inclined surface 53b. Moving. Of course, at this time, the operating member 53 is rotated from the engagement position to the release position side by the first engagement shaft 51 as the main body portion 3 approaches the second movable member 7. When the first engagement shaft 42 and the second engagement shaft 51 get over the inclined surfaces 43 and 53b, the operation member 53 is rotated from the release position to the engagement position side by the torsion coil spring 54, and the second engagement is performed. The second engagement shaft 51 enters the recess 53a. When the engagement shaft 51 hits the bottom of the second engagement recess 53 a, the main body 3 is moved rearward by the torsion coil spring 54, and the first engagement shaft 42 is inserted into the first engagement recess 41. Thus, the main body 3 is detachably attached to the second movable member 7.

As shown in FIG. 4, first, second, and third through holes 3 d, 3 e, 3 f are formed in the top plate portion 3 b of the main body 3. The first, second, and third through holes 3d, 3e, and 3f are for inserting tools such as a screwdriver for rotating the adjusting screw 10, the first adjusting shaft 22, and the second adjusting shaft 32, respectively. They are arranged so as to oppose the adjusting screw 10, the first adjusting shaft 22 and the second adjusting shaft 32 in the axial direction thereof.

  A third engagement mechanism 60 is provided between the rear end portion of the main body portion 3 and the rear end portion of the second movable member 7. The third engagement mechanism 60 is for preventing the main body 3 from being detached from the second movable member 7. That is, as described above, the forward movement of the main body 3 relative to the second movable member 7 is prevented by the biasing force of the torsion coil spring 54. Therefore, if the main body 3 is pushed forward by a force greater than the urging force of the torsion coil spring 54, the main body 3 moves forward and the first engagement shaft 42 comes out of the first engagement recess 41. End up. As a result, there is a possibility that the main body 3 is detached from the second movable member 7 to the right. In order to reliably prevent such a situation, the third engagement mechanism 60 is provided.

  The third engagement mechanism 60 has a lock member 61. The lock member 61 is rotatably attached to the rear end portion of the main body 3 via a support shaft 52. The lock member 61 is rotatable between a lock position shown in FIG. 6 and a lock release position separated from the lock position by a predetermined angle in the counterclockwise direction in FIG. The lock member 61 is urged to rotate by a torsion coil spring 54 in a direction from the unlock position to the lock position. The lock member 61 may be rotationally biased from the unlock position side to the lock position side by a coil spring different from the torsion coil spring 54. Further, the lock member 61 may be rotatably attached to the rear end portion of the main body portion 3 via a shaft different from the support shaft 52.

  Protruding portions 61 a and 61 a that protrude toward the second movable member 7 are formed at both upper and lower ends of the distal end portion of the lock member 61. On the other hand, lock grooves 62 and 62 are formed in the left side portion (upper portion in FIG. 3) of the rear end portion of the side plate portions 7a and 7a of the second movable member 7. The dimensions of the lock groove 62 are determined so that the protruding portion 61a can protrude and retract in the left-right direction. Moreover, the longitudinal dimension of the lock groove 62 is set to be substantially the same as the longitudinal dimension of the protrusion 61a. Further, the lock groove 62 is arranged such that the protruding portion 61 a can be projected and retracted in the lock groove 62 only when the main body 3 is attached to the second movable member 7 at a proper position. In other words, the protruding portion 61a is a locking groove until the attachment of the main body 3 is completed regardless of which of the first to third methods the main body 3 is attached to the second movable member 7. 62 is arranged so that it cannot enter.

  When the main body 3 is attached to the second movable member 7 by any one of the first to third methods, the protruding portion 61a hits the side plate 7a of the second movable member 7 at the start of attachment. Therefore, when the main body 3 is moved closer to the second movable member 7, the protrusion 61a is rotated from the lock position to the lock release position accordingly. Thereafter, when the main body 3 is attached to the second movable member 7, that is, until the first engagement shaft 42 of the first engagement mechanism 40 hits the bottom of the first engagement recess 41, the second engagement is performed. When the second engagement shaft 51 of the coupling mechanism 50 is inserted until it hits the bottom of the second engagement recess 53a, the lock member 61 is rotated from the unlocked position to the locked position by the torsion coil spring 54, and protrudes. The portion 61 a enters the lock groove 62. Then, since the dimension of the protrusion 61a and the lock groove 62 in the front-rear direction is set to be the same, the main body 3 is locked to the second movable member 7 so as not to move in the front-rear direction. Therefore, it is possible to reliably prevent the main body 3 from moving forward and coming off from the second movable member 7.

  Even when the main body 3 is attached to the second movable member 7 by any of the first to third methods, the main body 3 is moved by rotating the operation member 53 from the engagement position to the release position. 2 It can be removed from the movable member 7. When the operation member 53 is rotated to the release position, the second engagement shaft 51 escapes from the second engagement recess 53a. Therefore, the rear end portion of the main body 3 is moved away from the second movable member 7 to the left until the operating member 53 is moved away from the second engagement shaft 51 to the left and the protruding portion 61a escapes from the lock groove 62. Let That is, the main body 3 is rotated counterclockwise in FIG. 6 about the first engagement shaft 42. Next, the main body 3 is moved forward, and the first engagement shaft 42 is allowed to escape from the first engagement recess 41. Thereafter, the main body 3 can be removed from the second movable member 7 by moving it to the left.

  One end of an outer link (first link) 71 is rotatably connected to the distal end of the main body 3 via a first support shaft 73. The first support shaft 73 is arranged with its axis line directed in the vertical direction, and both end portions thereof are supported by portions located on the base portion 2 side of the end portions of the side plate portions 3a and 3a of the main body portion 3. Yes. Since the axis line of the first support shaft 73 is directed in the vertical direction, the outer link 71 rotates in the horizontal plane. One end of an inner link (second link) 72 is rotatably connected to the distal end of the main body 3 via a second support shaft 74. The second support shaft 74 is parallel to the first support shaft 73 and is disposed on the front side and the left side of the first support shaft 73. The second support shaft 74 may be disposed at the same position or rearward in the front-rear direction with the first support shaft 73.

  As shown in FIGS. 4 and 6, the attachment member 4 is provided with a connecting shaft body 75. The connecting shaft body 75 has two shaft portions 75 a and 75 b extending in parallel with the first and second support shafts 73 and 74. The other end portion of the outer link 71 is rotatably supported by one shaft portion (third support shaft) 75a. The other end portion of the inner link 72 is rotatably supported by the other shaft portion (fourth support shaft) 75b. As a result, the attachment member 4 is rotatably connected to the distal end portion of the main body 3 via the inner link 71 and the outer link 72, and as a result, the door D is rotatably supported by the housing B via the hinge device 1. . The shaft portions 75a and 75b may be formed as shaft bodies independent of each other.

  The attachment member 4 is rotatable between a closed position shown in FIG. 6 and an open position shown in FIG. The closed position of the attachment member 4 is defined by the outer link 71 abutting against the attachment member 4 as shown in FIG. The shaft portion 75a is formed with a pair of recesses 75c and 75c. The recesses 75c and 75c are arranged such that a part of the inner link 72 enters when the attachment member 4 is located at the closed position. Thereby, the attachment member 4 can be reliably rotated to the closed position. On the other hand, the open position of the attachment member 4 is defined by the inner link 72 abutting against the attachment member 4 as shown in FIG. Of course, the closed position and the open position of the attachment member 4 may be defined by other known structures.

In FIG. 6, when the mounting member 4 is located at the closed position, the door D approaches the housing B as it goes from its suspending side (supporting side by the hinge device 1) to the free end side. It is described in a slightly inclined state. However, the door D does not actually rotate to the position shown in FIG. 6, and the door D rotates only until it is parallel to the front surface of the housing B because the free end of the door D hits the front surface of the housing B. There is nothing to do. Therefore, when the hinge device 1 is actually used, the attachment member 4 does not rotate to the closed position, and the attachment member 4 is opened by a slight angle (for example, about 1 to 2 degrees) from the closed position. Stop at the position.

  Since the attachment member 4 is rotatably supported by the main body 3 via the two links 71 and 72, assuming that the instantaneous rotation center of the attachment member 4 is C, as shown in FIG. Is obtained as an intersection of a straight line orthogonal to each axis of the first support shaft 73 and the shaft portion 75a and a straight line orthogonal to each axis of the second support shaft 74 and the shaft portion 75b. The instantaneous rotation center C is located in front of the shaft portion 75a in the direction from the support shaft 73 toward the shaft portion 75a regardless of whether the mounting member 4 is located between the closed position and the open position. In the direction from the support shaft 74 to the shaft portion 75b, the shaft portion 75b is located in front of the shaft portion 75b. In other words, even if the attachment member 4 is located at any position between the closed position and the open position, the first support shaft so that the instantaneous rotation center C is located at such a position. 73, the second support shaft 74 and the shaft portions 75a and 7b are arranged.

  A rotation urging mechanism (rotation urging means) 80 is provided between the distal end portion of the main body 3 and the attachment member 4. The rotation urging mechanism 80 moves the attachment member 4 when the attachment member 5 is located between a predetermined release position (position shown in FIG. 10) between the open position and the closed position and the closed position. The power transmission member 81, the torsion coil spring (biasing means) 82, and the receiving member 83 are provided for rotating to the closed position and maintaining the closed position.

  As shown in FIGS. 4 and 15 to 19, the force transmission member 81 has an insertion hole 81 a formed at the base end thereof (the end on the right wall portion side of the housing B in FIG. 6). The insertion hole 81a is disposed with its axis line directed in the vertical direction, and is formed as a long hole that is raised to the left in FIG. The second support shaft 74 is inserted into the insertion hole 81a so as to be rotatable and relatively movable in the longitudinal direction of the insertion hole 81a. Therefore, the force transmission member 81 can rotate around the second support shaft 74 and can move in the longitudinal direction within the length of the insertion hole 81a. The insertion hole 81a may be formed in a circular cross section without being a long hole. In this case, the force transmission member 81 can rotate with respect to the second support shaft 74 but cannot move in the radial direction of the second support shaft 73. Further, the force transmission member 81 is not provided on the second support shaft 74, but an axis parallel to the second support shaft 74 is provided on the main body 3, and the axis can be rotated about the axis and moved in the longitudinal direction of the insertion hole 81 a. It may be provided or may be provided on the shaft so as to be rotatable and immovable.

  A guide hole 3g (notched portion) is formed at the tip of the top plate portion 3b of the main body portion 3 so as to penetrate the top plate portion 3b in the left-right direction and extend along the longitudinal direction. The tip end portion of the force transmission member 81 is inserted into the guide hole 3g so as to be movable in the longitudinal direction of the guide hole 3g. Thereby, when the force transmission member 81 rotates around the first support shaft 73, the front end portion of the force transmission member 81 is prevented from interfering with (abutting against) the top plate portion 3b. The guide hole 3g may be opened forward from the tip surface of the top plate portion 3b.

At the tip of the force transmission member 81, a pressing portion (the other end portion of the force transmission member protruding from the main body 3 to the outside; a part) 81b is formed. The pressing portion 81b is made of a convex curved surface, and in particular in this embodiment, is constituted by a convex arc surface. The arc surface is arranged with its center line directed in the vertical direction. That is, the arc surface extends in the vertical direction. As shown in FIGS. 6 to 13, the arc surface constituting the pressing portion 81 b passes through the insertion hole 81 a even when the attachment member 4 is located at any position between the open position and the closed position. It protrudes to the outside of the main body 3 and the amount of protrusion increases as the mounting member 4 rotates from the open position side to the closed position side.

  An escape recess 81c is formed in a portion facing the rear side of the tip of the force transmission member 81 (portion facing the right side in FIG. 18). The escape recess 81c is formed of an arc surface that is recessed forward, and is disposed so as to be in contact with the end located on the right side in FIG. 18 of the arc surface that constitutes the pressing portion 81b.

  A torsion coil spring 82 is externally attached to the second support shaft 74. One end 82 a of the torsion coil spring 82 abuts on the first engagement shaft 42. The other end 82 b of the torsion coil spring 82 abuts against the force transmission member 81. As a result, the torsion coil spring 82 always urges the force transmission member 81 to rotate clockwise in FIG. However, when the mounting member 4 is located between the open position and the release position, the force transmission member 81 is prevented from rotating clockwise by a clutch mechanism 90 described later, and stops at the stop position shown in FIG. It has been made. The torsion coil spring 82 urges the force transmission member 81 upward in FIG. Normally, the lower right end portion of the insertion hole 81 a is abutted against the second support shaft 74 by this urging force. The torsion coil spring 82 is not provided on the first support shaft 74, but when the force transmission member 81 is provided on a different shaft from the second support shaft 74, for example, as described above, It may be provided on the shaft.

  A receiving member 83 is attached to the attachment member 4. As shown in FIG. 6, the receiving member 83 has an end located on the side far from the instantaneous rotation center C of the mounting member 4 when the mounting member 4 is in the closed position, more specifically, The second support shafts 73 and 74 are disposed at the end portions located on the far side from the instantaneous rotation center C in the direction orthogonal to the axis of the second support shafts 73 and 74. The receiving member 83 has a recess 83a. The action part 83b is formed in the inner surface which divides this recessed part 83a, and the outer surface following this inner surface. That is, a part of the inner surface of the recess 83a is located on the rear side in FIG. 6 when the mounting member 5 is located at the closed position, and a part 83a located on the rear side faces the front. It is said that. An arcuate surface 83d that protrudes outward is formed at the intersection of the flat surface 83c and the outer surface (surface facing downward in FIG. 6) adjacent to the opening of the recess 83a. An action portion 83b is configured by the flat surface 83c and the arc surface 83d. The action part 83b does not necessarily need to be configured by the flat surface 83c and the arc surface 83d, and may be configured by another curved surface.

  A clutch mechanism (rotation prevention mechanism) 90 is provided between the outer link 71 and the force transmission member 81. The clutch mechanism 90 prevents the force transmission member 81 from being rotated clockwise in FIGS. 7 and 8 by the torsion coil spring 82 when the attachment member 4 is located between the open position and the release position. And it is for maintaining the force transmission member 81 in a stop position, and is comprised as follows.

  That is, as shown in FIGS. 7, 8, and 14, the outer link 71 includes a pair of side plate portions 71 a and 71 a that are arranged to face each other in the vertical direction, and one side portion of the pair of side plate portions 71 a and 71 a ( 14 (C) and a top plate portion 71b that is integrally formed with the pair of side plate portions 71a and 71a. One end portion (right end portion in FIG. 14A) of the side plate portions 71a, 71a is rotatably connected to the main body portion 3 by the first support shaft 73, and the other end portions of the side plate portions 71a, 71a are attached by the shaft portion 75a. The member 4 is rotatably connected.

  On the inner surfaces of the side plate portions 71a, 71a facing each other, first projecting portions 91, 91 projecting in a direction approaching each other (vertical direction) are formed, respectively. The first projecting portion 91 is an end of the side plate portions 71 a, 71 a facing each other on the side of the first support shaft 73, and is disposed at a position located behind the first support shaft 73. A first engagement surface (first engagement portion) 92 is formed on the surface facing the front of the first protrusion 91. The first engagement surface 92 is constituted by a concave arcuate surface (first arcuate surface) centered on the axis of the first support shaft 73.

  On the other hand, a pair of second projecting portions 93 and 93 projecting in the vertical direction are formed at the tip of the force transmission member 81. This 2nd protrusion part 93 is arrange | positioned a little on the base end side from the press part 81b. A second engagement surface (second engagement portion) 94 is formed on the surface facing the rear of the second protrusion 93. The second engagement surface 94 is configured by a convex arc surface (second arc surface) having the same radius of curvature as the arc surface constituting the first engagement surface 92. When the attachment member 4 is positioned between the open position and the release position, the second engagement surface 94 is urged by the torsion coil spring 82 in the clockwise direction of FIG. By the first engagement surface 92. As a result, the clockwise rotation of the force transmission member 81 is prevented by the outer link 71, and the position of the force transmission member 81 at this time is the stop position.

  When the force transmission member 81 is located at the stop position, the center line of the arc surface constituting the second engagement surface 94 coincides with the axis line of the first support shaft 73 (= center line of the first engagement surface 92). A second engagement surface 94 is arranged to do this. Therefore, the urging force of the torsion coil spring 82 transmitted to the outer link 71 via the force transmission member 81 is received by the first support shaft 73. Therefore, the outer link 71 is not rotated by the torsion coil spring 82, and the force transmission member 81 is maintained at the stop position.

The force transmission member 81 is maintained at the stop position by the clutch mechanism 90 only when the attachment member 4 is located between the open position and the release position, and the attachment member 4 closes beyond the release position. When rotating to the position side, the force transmission member 81 is rotated clockwise by the urging force of the torsion coil spring 82. Then, the attachment member 4 is rotated from the release position to the closed position.

  That is, as shown in FIGS. 7 and 8, when the attachment member 4 is located on the open position side from the release position, the action portion 83b is separated from the pressing portion 81b.

  However, when the attachment member 4 rotates from the open position toward the closed position and reaches a position just before the release position by a slight angle (for example, about 5 °), as shown in FIG. The arc surface 83d hits the pressing portion 81b. In this case, the arc surface 83d of the action part 83b is forward of the first vertex P (refer to FIG. 5), where P is the portion of the pressing part 81b farthest from the instantaneous rotation center C (hereinafter referred to as the first vertex). 9 is abutted against the pressing portion 81b at a position slightly spaced left). Therefore, when the mounting member 4 further rotates toward the closed position, the arc surface 83d pushes the pressing portion 81b to the right (downward in FIG. 9). As a result, the force transmission member 81 moves to the right side (lower side in FIG. 9) along the longitudinal direction of the insertion hole 81a, and accordingly, the second engagement surface 94 is moved to the right with respect to the first engagement surface 92. Move to. Here, while the first and second engagement surfaces 92 and 94 are arcuate surfaces, the second engagement surface 94 moves linearly, but when the mounting member 4 is positioned near the release position, The contact length between the first and second engagement surfaces 92 and 94 is short. Moreover, the moving direction of the second engagement surface 94 is a direction close to the tangential direction of the contact portions of the first and second engagement surfaces 92, 94, that is, the direction formed by the tangent is small. Therefore, the second engagement surface 94 can move smoothly with respect to the first engagement surface 92.

When the attachment member 4 reaches the release position, the arc surface 83d of the action portion 83b contacts the pressing portion 81b at the first vertex P. At this time, the first engagement surface 92 rotates counterclockwise (substantially upward in FIG. 9) about the first support shaft 73 with respect to the second engagement surface 94, and the second engagement surface 94 By moving to the right (substantially downward in FIG. 9) with respect to the first engaging surface 92, the first and second engaging surfaces 92, 94 move in the circumferential direction, the tangential direction thereof, or the direction close thereto. Separate. As a result, the rotation preventing state of the force transmission member 81 by the clutch mechanism 90 is released, and the force transmission member 81 can be rotated clockwise in FIG. The force transmission member 81 is rotated clockwise about the second support shaft 74 by the torsion coil spring 82.

  Here, if the place (hereinafter referred to as the second vertex) that is farthest from the axis of the second support shaft 74 in the circular arc surface that constitutes the pressing portion 81b is Q, the attachment member 4 is located at the release position. The second vertex Q is located in front of the first vertex P (leftward in FIG. 10). Therefore, when the force transmission member 81 rotates about the first support shaft 73 in the clockwise direction of FIG. 10, the pressing portion 81b hits the arc portion 83d of the action portion 83b, and the pressing portion 81b moves the receiving member 83 backward (FIG. 10). To the right). Thereby, the attachment member 4 is rotated from the release position to the closed position.

  When the attachment member 4 rotates from the release position to the closed position side, the force transmission member 81 that has been pressed and moved to the right by the action portion 83b is moved to the left by the torsion coil spring 82. When the mounting member 4 is rotated by a predetermined small angle (for example, about 5 degrees) from the release position, the force transmission member 81 moves to the left until the lower right end in FIG. 10 of the insertion hole 81a hits the first support shaft 73. Moved to. Therefore, thereafter, the force transmission member 81 does not move in the longitudinal direction of the insertion hole 81a, and only rotates in the clockwise direction.

  When the attachment member 4 reaches the closed position due to the rotation of the force transmission member 81, the outer link 71 abuts against the attachment member 4 to stop the attachment member 4, and accordingly the force transmission member 81 stops. The attachment member 4 and the force transmission member 81 are maintained at the positions stopped by the urging force of the torsion coil spring 82.

  When the attachment member 4 rotates from the release position to the closed position, as shown in FIGS. 11 to 13 and 6, the contact portion of the pressing portion 81 b with the action portion 83 b moves from the arc surface 83 d to the flat surface 83 c. As a result, the rotational biasing force (rotational moment) on the mounting member 4 by the torsion coil spring 82 increases.

  That is, assuming that the rotational biasing force of the torsion coil spring 82 against the force transmission member 81 is constant regardless of the position of the mounting member 4, the rotational biasing force of the torsion coil spring 82 against the mounting member 4 is instantaneous. The distance from the center of rotation C to the contact location between the pressing portion 81b and the action portion 83b, and the normal line at the contact location between the pressing portion 81b and the action portion 83b (the pressing direction of the pressing portion 81b with respect to the action portion 83b at the contact location) Action line of the facing force) and a pressing angle formed by a line connecting the contact location and the instantaneous rotation center C. The distance from the instantaneous rotation center to the contact portion between the pressing portion 81b and the action portion 83b increases as the mounting member 4 rotates from the release position to the closed position, as is apparent from FIGS. . Similarly, the pressing angle gradually increases so as to approach 90 ° as the attachment member 4 rotates from the release position to the closed position. Accordingly, the rotational biasing force applied to the mounting member 4 by the torsion coil spring 82 gradually increases as the mounting member 4 rotates toward the open position. In particular, in this embodiment, the mounting member 4 gradually increases until it reaches the closed position. However, the rotational urging force applied to the mounting member 4 by the torsion coil spring 82 may be gradually increased from the release position to a position slightly before the closed position, and thereafter may be constant.

  When the mounting member 4 is rotated from the closed position to the open position side, the pressing portion 81b is pressed by the action portion 83b, and the force transmission member 81 resists the biasing force of the torsion coil spring 82 and is counterclockwise in FIGS. Rotated in the direction. When the mounting member 4 reaches a position just before the angle (5 °) with respect to the release position, the force transmission member 81 is not only rotated with the rotation of the mounting member 4 toward the open position side, Since the pressing part 81b is pushed rightward by the arc surface 83d of the action part 83b, the force transmission member 81 is moved rightward along the longitudinal direction of the insertion hole 81a. Due to the rotation of the outer link 71 accompanying the rotation of the attachment member 4 and the rotation and movement of the force transmission member 81, the first and second engagement surfaces 92 and 94 approach each other.

When the attachment member 4 reaches the release position from the closed position, the arc surface 83d comes into contact with the first vertex P of the pressing portion 81b. Accordingly, when the attachment member 4 further rotates from the release position to the open position side, the first link 71 rotates accordingly, and the force transmission member 81 is moved to the left by the torsion coil spring 82. As a result, the first and second engagement surfaces 92 and 94 come close to each other and start to come into contact from the end portions adjacent to each other. When the attachment member 4 rotates to the open position side by about 5 ° from the release position, the force transmission member 81 reaches the stop position, and the arc surface 83d of the action portion 83b contacts the pressing portion 81b at the second vertex Q. Accordingly, the force transmission member 81 can rotate in the clockwise direction in FIG. 9 about the second support shaft 74. However, at this time, since the first and second engagement surfaces 92 and 94 are in contact with each other, the force transmission member 81 is maintained in the stopped state at the stop position.

  When the attachment member 4 further rotates to the open position side, the action portion 83d is separated from the pressing portion 81b. Therefore, after that, only the attachment member 4 rotates, and the force transmission member 81 remains at the stop position. When the attachment member 4 is rotated to the open position, the inner link 72 abuts against the outer link 71 and cannot be further rotated, and stops at the open position.

  As shown in FIG. 6, a rotary damper mechanism 100 is provided at the tip of the main body 3. The rotary damper mechanism 100 is for preventing the attachment member 4 from rotating at a high speed toward the closed position and rotating the attachment member 4 at a low speed. And keep it slow.

The rotary damper mechanism 100 includes a casing 101 and a rotor 102. The casing 101 has a cylindrical shape, and is fixed to the main body 3 with its axis line directed in the vertical direction. On the other hand, the rotor 102 is arranged such that its axis coincides with the axis of the casing 101, and one end thereof is rotatably inserted into the casing 101. Inside the casing 101 is provided damper means (not shown) that suppresses the rotation of the rotor 102 in one direction at a low speed and allows high-speed rotation in the other direction. The other end portion of the rotor 102 protrudes from the casing 101 to the outside, and a first gear portion 103 is formed at the other end portion that protrudes.

On the other hand, the force transmission member 81 is provided with a second gear portion 104. The second gear portion 104 is arranged so that the axis of the second gear portion 104 coincides with the axis of the first support shaft 73 when the right end of the inner surface of the insertion hole 81 a abuts against the second support shaft 74. Has been. The second gear portion 104 is in mesh with the first gear portion 103. Therefore, when the force transmission member 81 rotates, the rotor 102 is rotated. In this case, when the force transmission member 81 rotates in the clockwise direction in FIG. 6 from the stop position, that is, when the attachment member 4 rotates in the closing direction, the rotor 102 is rotated in the one direction. As a result, high-speed rotation of the force transmission member 81 in the clockwise direction is prevented, and consequently high-speed rotation of the mounting member 4 is prevented. Therefore, the attachment member 4 rotates at a low speed in the closing direction. Conversely, when the force transmission member 81 rotates counterclockwise in FIG. 6, the rotor rotates in the other direction. Therefore, the force transmission member 81 can rotate at a high speed, and the attachment member 4 can rotate at a high speed from the closed position toward the open position. The force transmission member 81 is movable along the length of the insertion hole 81a by the length of the insertion hole 81a. When the force transmission member 81 moves to the left side, the rotation center of the force transmission member 81 (second support shaft). 74 axis) and the axis of the second gear portion 104 are shifted. However, the length of the insertion hole 81a is short. Moreover, when the force transmission member 81 moves to the left side, the distance between the centers of the first and second gear portions 103 and 104 becomes slightly longer. Therefore, even when the force transmission member 81 moves to the left side, the first and second gear portions 103 and 104 maintain a good meshing state.

  In the hinge device configured as described above, the distal end portion (the other end portion; a part) of the force transmission member 81 of the rotation urging mechanism 80 protrudes outside from the guide hole 3g formed in the top plate portion 3b of the main body portion 3, A pressing portion 81b is formed at the protruding tip. The pressing portion 81 b presses the action portion 83 b of the receiving member 83 provided at the end portion that is separated from the instantaneous rotation center C of the mounting member 4. This pressed portion is disposed farther from the instantaneous rotation center C than the shaft portions 75b and 75c serving as the third and fourth support shafts. As a result, the urging force of the torsion coil spring 82 is transmitted to the mounting member 4 as a large rotational moment. In other words, the urging force of the torsion coil spring 82 can be reduced by an amount corresponding to the increase of the rotational moment. Accordingly, the force acting on the first and second support shafts 73 and 74 and the shaft portions 75a and 75b, particularly the force acting on the shaft portions 75a and 75b can be reduced. Therefore, the wear of the shafts 73, 74, 75a, 75b, the attachment member 4 and the first and second support shafts 73, 74 can be reduced, thereby extending the life of the hinge device 1.

  Next, another embodiment of the present invention will be described. In the embodiment described below, only the configuration different from the above-described embodiment will be described, and the same components are denoted by the same reference numerals, and the description thereof will be omitted.

  20 to 29 show a second embodiment of the present invention. In the hinge device 1A of this embodiment, a clutch mechanism (rotation prevention mechanism) 110 is used instead of the clutch mechanism 90. The clutch mechanism 110 is configured as follows.

  That is, as shown in FIGS. 20 and 21, locking protrusions (first engagement portions) 111, 111 are formed at the tip portions of the two inner surfaces along the longitudinal direction of the guide hole 3g, respectively. The locking protrusions 111 are protruded in the vertical direction so as to approach each other. By forming the locking projections 111, 111 in the guide hole 3 g, the inside of the guide hole 3 g has a front portion 3 h located on the front side of the locking projection 111 and a rear portion 3 i positioned on the rear side. It is divided into.

  In the hinge device 1A, a force transmission member 81A is used instead of the force transmission member 81. As shown in FIGS. 22 to 24, a pair of upper and lower contact portions (second engagement portions) 112, 112 are formed at the distal end portion of the force transmission member 81A. The pair of contact portions 112, 112 are disposed on the proximal end side (lower side in FIG. 22) from the pressing portion 81b. In addition, the pair of contact portions 112 and 112 are arranged so as to sandwich the pressing portion 81b vertically. A surface facing the left side (upward in FIG. 22) of the contact portion 112 is configured by a circular arc surface that is convex toward the left side. The abutting portion 112 may be constituted by another convex curved surface.

  As shown in FIGS. 25 to 27, the contact portions 112 and 112 are inserted into the front portion 3 h of the guide hole 3 g when the attachment member 4 is located between the open position and the release position, Due to the urging force of the torsion coil spring 82, the arc surface of the contact portion 112 is pressed against the locking projection 111, and the force transmission member 81A is stopped. This position is the stop position of the force transmission member 81A.

  In the above configuration, when the attachment member 4 is rotated from the open position to a position closer to the release position by a predetermined angle (for example, 5 °), as shown in FIG. 26, the arc surface 83d of the action portion 83b becomes the pressing portion 81b. I hit it. Thereafter, while the attachment member 4 rotates to the release position, the action portion 83b pushes the pressing portion 81b to the right (downward in FIG. 26) and moves the force transmission member 81A in the same direction. Of course, the contact portion 112 also moves to the right along with the movement of the force transmission member 81A. When the attachment member 4 reaches the release position, the contact portion 112 moves to the right from the locking projection 111 as shown in FIG. As a result, the locked state of the contact portion 112 by the locking protrusion 111 is released, and the force transmission member 81A can rotate from the release position to the closed position. The force transmission member 81 </ b> A is rotated to the closed position by the torsion coil spring 82. Then, the action part 83b is pushed backward by the pressing part 81b, and the attachment member 4 is rotated to the closed position.

  Of course, when the attachment member 4 is rotated from the closed position to the open position side, the action portion 83b is provided while the attachment member 4 reaches the position at the front by a predetermined angle (for example, 5 °) of the release position and then rotates to the release position. Pushes the pressing portion 81b to the right, and moves the force transmission member 81A in the same direction. As a result, the contact portion 112 can pass through the right side of the locking projection 111. Then, when the predetermined angle (5 °) is further rotated from the release position, the attachment member 4 is moved to the left by the torsion coil spring 82, and the contact portion 112 enters the front portion 3h of the guide hole 3g. Thereby, the rotation of the force transmission member 81A in the clockwise direction is prevented. Thereafter, the action portion 81b is separated from the pressing portion 81b with the rotation of the attachment member 4 toward the open position.

  30 to 43 show a third embodiment of the present invention. In the hinge device 1B of this embodiment, a clutch mechanism 120 is used in place of the clutch mechanism 90. Further, in this hinge device 1B, a switching mechanism 130 for switching the latching state of the clutch mechanism 120 to a released state and an auxiliary rotation biasing mechanism 140 for biasing the attachment member 4 to the closed position side are used. .

  First, the clutch mechanism 120 will be described. As shown in FIG. 31, a horizontally elongated hole 121 extending in the vertical direction is formed at the front end of the main body 3. The horizontally long hole 121 is disposed in front of the guide hole 3g. The vertical length of the laterally long hole 121 is set longer than the vertical width of the guide hole 3g. The tip of the guide hole 3g intersects the side surface on the rear side of the horizontally long hole 121. In this case, the guide hole 3g intersects the laterally long hole 121 at the center in the longitudinal direction. As a result, the laterally long hole 121 and the guide hole 3g communicate with each other. Further, both ends in the vertical direction remain on the rear side surface of the laterally long hole 121, and a first engagement surface (first engagement portion) 122 is formed at each of the remaining both ends.

  33 to 37 show a force transmission member 81B used in this embodiment. An engaging portion 123 extending in the vertical direction is formed at the distal end portion (upper end portion in each drawing) of the force transmission member 81B. A pressing portion 81b is formed on a portion of the outer surface of the engaging portion 123 located on the left side (the tip side of the force transmission member 81B). A second engagement surface (second engagement portion) 124 is formed on a portion of the outer surface of the engagement portion 123 that faces rearward. The second engagement surface 124 is formed subsequently to the proximal end side of the force transmission member 81 with respect to the pressing portion 81b.

  The engaging portion 123 has a vertical length and a width in the front-rear direction that are substantially the same as a vertical length and a width in the front-rear direction of the laterally long hole 121, respectively. In addition, when the attachment member 4 is located between the open position and the release position, the engaging portion 123 cannot move in the longitudinal direction of the laterally long hole 121 and can move in the longitudinal direction of the insertion hole 81a. Has been inserted. Of course, at this time, as shown in FIGS. 38 to 40, the second engagement surface 124 abuts against the first engagement surface 122, thereby the timepiece centering on the second support shaft 74 of the force transmission member 81B. Rotation in the direction is prevented. The position of the force transmission member 81B at this time is the stop position.

When the force transmission member 81B moves a predetermined distance to the left (upward in FIGS. 38 to 43) along the longitudinal direction of the insertion hole 81a, the second engagement surface 124 is separated from the first engagement surface 122 to the left. Then, at the same time, the engaging portion 123 escapes from the laterally long hole 121 to the left side. As a result, the force transmission member 81B can rotate clockwise from the stop position, and is rotated clockwise by the torsion coil spring 82. When the force transmission member 81B rotates in the clockwise direction, a narrow portion 81e formed at a portion following the proximal end side of the force transmission member 81B with respect to the engaging portion 123 can move in the front-rear direction in the guide hole 3g. Get in.

In a state where the force transmission member 81B is spaced from the stop position in the clockwise direction, when the force transmission member 81B rotates toward the stop position, the narrow portion 81e escapes forward from the guide hole 3g and is positioned in front of the horizontally long hole 121. It hits the inside. Thereafter, when the force transmission member 81 </ b> B is moved rightward, the second engagement surface 124 faces the first engagement surface 122 and is pressed against the first engagement surface 122 by the biasing force of the torsion coil spring 82. As a result, the force transmission member 81B is positioned at the stop position.

Next, the switching mechanism 130 will be described. As shown in FIG. 32, a pair of engaging protrusions 131 projecting in the vertical direction so as to approach each other are formed on the opposing inner surfaces of the side plate portions 71a, 71a of the outer link 71. 131 is formed. The engaging protrusion 131 is disposed at an end portion of the side plate portion 71a on the first support shaft 73 side, and is separated from the first support shaft 73 by a predetermined distance in the radial direction.

As shown in FIGS. 33 to 37, a pair of abutting protrusions 132 protruding in the vertical direction is formed at a substantially intermediate portion between the base end and the distal end of the force transmission member 81B. First and second inclined surfaces 133 and 134 are formed on the upper surface of the contact protrusion 132 that faces the distal end side of the force transmission member 81B. The first inclined surface 133 is inclined so as to approach the tip of the force transmission member 81B as it goes rearward. The second diameter slope 134 is inclined so as to approach the proximal end of the force transmission member 81B as it goes rearward. The rear end portion of the first inclined surface 133 and the front end portion of the second inclined surface 134 intersect each other. The angle formed by the first and second inclined surfaces 133 and 134 is substantially a right angle. The first inclined surface 133 and the second inclined surface 134 are smoothly connected by a convex curved surface such as a circular arc surface formed at the intersecting portion thereof.

As shown in FIG. 38, when the mounting member 4 is located between the open position and an intermediate position spaced from the open position by a predetermined angle, the first inclined surface 133 is engaged with the outer link 71. The protrusion 131 is pressed against the torsion coil spring 82. This prevents the force transmission member 81B from moving to the left along the longitudinal direction of the insertion hole 81a. Hereinafter, the position of the force transmission member 81B in the direction along the insertion hole 81a at this time is referred to as a locking position. When the force transmission member 81B is located at the locking position, the second support shaft 74 is located on the end portion of the insertion hole 81a on the diagonally left front side. Therefore, the force transmission member 8B can move to the right side from the locking position along the longitudinal direction of the insertion hole 81a.

When the attachment member 4 rotates from the open position to the closed position, the outer link 71 rotates counterclockwise around the first support shaft 73 accordingly. As a result, the contact point between the engagement protrusion 131 and the first inclined surface 133 moves to the rear end side of the first inclined surface 133. At this time, since the first inclined surface 133 is inclined so as to approach the tip of the force transmission member 81B as it goes rearward, the force transmission member 4 resists the biasing force of the torsion coil spring 82 to the right side. It is also moved to the right along the longitudinal direction of the insertion hole 81a. When the attachment member 4 reaches a predetermined intermediate position, as shown in FIG. 39, the engagement protrusion 131 comes into contact with the intersection of the first and second inclined surfaces 133 and 134. At this time, the force transmission member 81B has moved to the rightmost side. Hereinafter, the position of the force transmission member 81B in the direction along the insertion hole 81a at this time is referred to as a right limit position.

When the attachment member 4 is further rotated from the intermediate position to the closed position side, and the outer link 71 is further rotated counterclockwise around the first support shaft 73 as a result, the engagement protrusion 131 is moved as shown in FIG. It contacts the second inclined surface 134. When the attachment member 4 is further rotated toward the closed position, the contact portion between the engagement protrusion 131 and the second inclined surface 134 is moved to the rear of the second inclined surface 134 accordingly. Here, since the second inclined surface 134 is inclined so as to approach the proximal end of the force transmission member 81 </ b> B as it goes rearward, the force transmission member 4 is closed by the biasing force of the torsion coil spring 82. With the rotation in the direction, it is moved to the left side, and also to the left side along the longitudinal direction of the insertion hole 81a.

As shown in FIG. 41, when the attachment member 4 rotates from the open position toward the release position to the release position, the engagement protrusion 131 moves away from the second inclined surface 134 rearward. At the same time, the second engagement surface 124 is separated from the first engagement surface 122 to the left. As a result, the locked state by the clutch mechanism 120 is released, and the force transmission member 81B can be rotated clockwise from the stop position. Hereinafter, the position of the force transmission member 81B in the longitudinal direction of the insertion hole 81a at this time is referred to as a separation position. When the force transmission member 81B is located at the separation position, there is a slight gap between the right end of the insertion hole 81a and the second support shaft 74. Therefore, the force transmission member 81 </ b> B can move slightly further from the separated position to the left side as the mounting member 4 rotates. When the attachment member 4 rotates in the closing direction by a predetermined angle (for example, 5 °) from the release position, the right end portion of the insertion hole 81 a abuts against the second support shaft 74. As a result, the force transmission member 81B can no longer move to the left. Hereinafter, the position of the force transmission member 81B at this time is referred to as a left limit position.

As shown in FIG. 40, when the engaging protrusion 131 is in contact with the second inclined surface 134, the action portion 83b of the rotation urging mechanism 80 is substantially in contact with the pressing portion 81b. Since 81B moves in substantially the same direction as the tangential direction at the contact point between the action portion 83b and the pressing portion 81b, the attachment member 4 is hardly rotated and biased in the closing direction by the torsion coil spring 82. However, when the attachment member 4 reaches the release position, the force transmission member 81B rotates clockwise about the second support shaft 74, so that the action portion 83b is pushed rearward by the pressing portion 81b, thereby the attachment member 4 Is rotated toward the closed position. The contact portion between the pressing portion 81b and the action portion 83b is located at the back of the recess 8a as the mounting member 4 rotates until the mounting member 4 reaches a free position in front of the closed position by a predetermined small angle from the release position. Move to the side. When the attachment member 4 exceeds the free position, the pressing portion 81b is separated from the action portion 83b. Therefore, between the free position and the closed position, the rotation biasing force in the closing direction by the rotation biasing mechanism 80 does not act on the mounting member 4, and the mounting member 4 can freely rotate. Of course, as in the above embodiment, the rotation urging mechanism 80 applies the attachment member 4 in the closing direction when the attachment member 4 is located at any position between the release position and the closed position. It may be a force.

When the attachment member 4 rotates in the opening direction from the closed position to the open position, the clutch mechanism 120 and the switching mechanism 130 return to the original state as follows. That is, it is assumed that the attachment member 4 is now in the closed position. At this time, the force transmission member 81b is positioned at the left limit position, and the engagement protrusion 131 is separated from the second inclined surface 134.

When the attachment member 4 rotates open from the closed position toward the open position and reaches a position in front of the release position by a predetermined angle (5 °), the action portion 83b hits the pressing portion 81b. Therefore, after that, the force transmission member 81B is pressed and moved to the right as the mounting member 4 rotates toward the open position. When the attachment member 4 rotates to the release position, the force transmission member 81B is moved to the separation position. At this time, the engagement protrusion 131 is in contact with the right edge of the second inclined surface 134 and the engagement protrusion 131 contacts the second inclined surface 134 when the attachment member 4 rotates to the open position side beyond the release position. (See FIG. 40). Accordingly, when the attachment member 4 rotates beyond the release position to the open position side, the force transmission member 81B is moved to the right against the urging force of the torsion coil spring 82. Thereafter, as the mounting member 4 rotates to the open position side, the contact portion between the engagement protrusion 131 and the second inclined surface 134 moves forward, and gets over the intersection of the first and second inclined surfaces 133 and 134. After (see FIG. 39), the engaging protrusion 13 comes into contact with the first inclined surface 133 (FIG. 38).

Next, the auxiliary rotation urging mechanism 140 will be described. The auxiliary rotation urging mechanism 140 urges the attachment member 4 to rotate toward the closed position when the attachment member 4 is positioned between the intermediate position and the release position. The projection 131 and the second inclined surface 134 are configured.

That is, when the attachment member 4 is positioned between the intermediate position and the release position, the second inclined surface 124 is pressed against the engagement protrusion 131 by the biasing force of the torsion coil spring 82 as described above. The engaging protrusion 131 is pushed. In this case, as is apparent from the fact that the angle formed between the second inclined surface 124 and the first inclined surface 123 is 90 °, the contact portion between the engagement protrusion 131 and the second inclined surface 134 and the first support shaft. The engaging protrusion 131 is pushed in a direction substantially orthogonal to a line connecting the 73 axis. With this pressing force, the outer link 71 is rotated counterclockwise about the first support shaft 73, thereby rotating the attachment member 4 to the closed position side.

When the attachment member 4 is positioned between the open position and the intermediate position, the first inclined surface 134 presses the engagement protrusion 131. At this time, however, the line of action of the pressing force on the engaging protrusion 131 of the first inclined surface 134 connects the contact point between the engaging protrusion 131 and the first inclined surface 134 and the axis of the first support shaft 73. Are almost parallel and very close or collinear. Therefore, the urging force of the torsion coil spring 82 acting on the engaging protrusion 131 via the first inclined surface 133 hardly acts as a force for rotating the outer link 71. By changing the inclination angle of the first inclined surface 133, the urging force of the torsion coil spring 82 acting on the engaging protrusion 131 via the first inclined surface 133 is increased, whereby the mounting member 4 is in the closed position and the intermediate position. The mounting member 4 may be urged to rotate toward the closed position even when it is positioned between the two.

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 embodiment, when the attachment member 4 rotates from the release position to the closed position side, the rotation biasing mechanism 80 biases the attachment member 4 to the closed position side. Instead of the biasing mechanism 80, a rotation biasing mechanism that biases the mounting member 4 toward the open position when the mounting member 4 rotates from the predetermined release position toward the open position may be used.
The clutch mechanisms (rotation prevention mechanisms) 90, 110, and 120 can also be applied to a rotation urging mechanism having a configuration different from that of the rotation urging mechanism 80.

  The hinge device according to the present invention can be used as a hinge device for attaching a door to a housing.

C Instantaneous Rotation Center 1 Hinge device 1A Hinge device 1B Hinge device 3 Main body 3a Side plate 3b Top plate 3g Guide hole (notch)
4 Mounting member 71 Outer link (first link)
72 Inner link (second link)
73 First support shaft 74 Second support shaft 75a Shaft (third support shaft)
75b Shaft (fourth support shaft)
80 Rotation urging mechanism (Rotation urging means)
81 force transmission member 81A force transmission member 81B force transmission member 81b pressing portion (the other end of the force transmission member; part of the force transmission member)
82 Torsion coil spring (biasing means)
83b Action part 90 Clutch mechanism (rotation prevention mechanism)
92 1st engaging surface (1st engaging part)
94 2nd engagement surface (2nd engagement part)
110 Clutch mechanism (rotation prevention mechanism)
111 Locking protrusion (first engaging portion)
112 Abutting portion (second engaging portion)
120 Clutch mechanism (rotation prevention mechanism)
122 1st engaging surface (1st engaging part)
124 2nd engagement surface (2nd engagement part)

Claims (9)

A main body, a mounting member rotatably connected to the main body via first and second links between a closed position and an open position; and the main body, the mounting member being provided with the main body Rotation urging means for urging the rotation of the first and second links, and one end portions of the first and second links are rotatably connected to the main body portion via first and second support shafts parallel to each other. And the other end of the first and second links is rotatably connected to the mounting member via third and fourth support shafts parallel to the first and second support shafts.
The rotation urging means is provided inside the main body with a part thereof protruding from the main body, and a part of the rotation urging means protruding from the main body presses and contacts the mounting member. The hinge device is characterized in that the mounting member is urged to rotate. The main body in the direction in which the part of the rotation urging means that press-contacts the mounting member is perpendicular to the axis of the first to fourth support shafts and away from the instantaneous rotation center of the mounting member. The hinge device according to claim 1, wherein the hinge device is protruded from the hinge device.   The main body part is formed in a cross-sectional "U" shape by a pair of side plate parts arranged to face each other and a top plate part that connects one side parts of the pair of side plate parts, The second support shaft is disposed with its axis line facing the side plate portion, and both end portions of the first support shaft and both end portions of the second support shaft are supported by the side plate portion. The hinge device according to claim 1 or 2, wherein a notch portion is formed, and a part of the rotation urging means is projected outside the main body portion through the notch portion.   The rotation urging means includes a force transmission member that is displaceably provided inside the main body, and a urging means that displaces the force transmission member, and a part of the force transmission member is separated from the main body portion. The hinge device according to claim 1, wherein the hinge device is protruded to the outside. A main body, a mounting member rotatably connected to the main body via first and second links between a closed position and an open position; and the main body, the mounting member being provided with the main body Rotation urging means for urging the rotation of the first and second links, and one end portions of the first and second links are rotatably connected to the main body portion via first and second support shafts parallel to each other. And the other end of the first and second links is rotatably connected to the mounting member via third and fourth support shafts parallel to the first and second support shafts.
The attachment member is provided with an action portion on which the rotation urging force of the rotation urging means acts, and the distance between the instantaneous rotation center of the attachment member and the action portion is such that the instantaneous rotation center of the attachment member is The hinge device is characterized in that the action portion is arranged to be longer than a distance between each of the third support shaft and the fourth support shaft.   6. The hinge device according to claim 5, wherein the direction in which the urging force of the rotation urging means acting on the action portion gradually changes as the mounting member rotates.   The rotation urging means has a force transmission member provided in the main body part and a urging means for rotating and urging the force transmission member, and one end of the force transmission member is located inside the main body part. The other end of the force transmission member protrudes outward from the main body, and the protruding other end presses against the action portion of the attachment member, so that the attachment member is attached. The hinge device according to claim 5 or 6, wherein the hinge device is rotated by the biasing means via the force transmission member.   A rotation prevention mechanism is provided between the first link and the force transmission member, and the rotation prevention mechanism is configured such that the attachment member moves from one of the open position and the closed position to the other position. When the force transmission member is rotated by the biasing means until the release position is reached by a predetermined angle from the other position. The position of the force transmission member is allowed to be rotated to the other position side by the biasing means when the mounting member is fixed at the stop position and the mounting member exceeds the release position. 8. The hinge device according to 7. The rotation prevention mechanism includes a first engagement portion provided on the first link and a second engagement portion provided on the force transmission member, and any one of the first and second engagement portions. One of them is constituted by a concave first circular arc surface having the center of curvature as the axis of the first support shaft, and the other is formed by a convex second circular arc surface having the axis of the first support shaft as the center of curvature. The first arc surface and the second arc surface are in contact with each other so as to be rotatable about the axis of the first support shaft until the mounting member reaches the release position. The rotation of the force transmission member is allowed when the first arcuate surface and the second arcuate surface are separated from each other when rotation is blocked and the attachment member exceeds the release position. Item 9. The hinge device according to Item 8.

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