JP2012167491A - Hinge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hinge device capable of reliably preventing a body part from coming off a base part due to an unexpected accident.SOLUTION: An engaging member 63 is turnably provided at a rear end of a body part 3. The engaging member 63 is provided so as to be turnable between an engaging position engaging the base part 2 and the rear end of a body part 3 with each other and a release position releasing the engagement. A lock member 31 is turnably provided in the body part 3. The lock member 31 is turnable between an inhibition position inhibiting turning of the engaging member 63 from the engaging position to the release position and an allowable position allowing the engaging member 63 to turn from the engaging position to the release position. When a mounting member 4 turns from an open position to a closed position side, a drive mechanism 40A makes a lock member 31 turn from the allowable position to an intermediate position and a cam mechanism 40B makes the lock member 31 turn from the intermediate position to the inhibition position.

Description

  The present invention relates to a hinge device for rotatably attaching a door to a housing.

  Generally, this type of hinge device has a base, a main body detachably attached to the base, and an attachment member rotatably connected to the main body. And a base is attached to a housing | casing and an attachment member is attached to a door. Therefore, when the main body is attached to the base, the door is supported by the housing so as to be capable of opening and closing through the hinge device.

  A first engagement mechanism is provided between the one end portions of the base portion and the main body portion so as to detachably engage the one end portions. A second engagement mechanism is provided between the other end portions of the base portion and the main body portion so as to detachably engage the other end portions. And the main-body part is attached to the base so that attachment or detachment is possible by engaging the one end part and other end part of a base part and a main-body part each by a 1st and 2nd engagement mechanism.

  The second engagement mechanism has an engagement member provided at the base so as to be rotatable between an engagement position and a release position. When the engaging member rotates to the engaging position, the engaging member engages with the other end of the main body. Thereby, the other end part of a main-body part is engaged with the other end part of a base. On the other hand, when the engagement member is rotated from the engagement position to the release position, the engagement of the engagement member with the main body is released, and the other ends of the base and the main body can be removed. When the other end of the main body is removed from the other end of the base, one end of the main body can be removed from the one end of the base. After removing the other end of the main body from the other end of the base, the main body can be removed from the base by removing one end of the main body from one end of the base.

  Thus, when the engagement member is rotated from the engagement position to the release position, the main body portion can be removed from the base, so when the engagement member is rotated from the engagement position to the release position by an accident, There is a possibility that the main body part may come off from the base part and eventually the door may come off from the housing. Therefore, in the device described in Patent Document 1 below, a lock member is provided in the main body.

  The lock member can be rotated between a blocking position and an allowable position, and when the locking member is rotated to the blocking position, the engagement member is fixed to the engagement position. Therefore, by rotating the lock member to the blocking position, it is possible to reliably prevent an accident that the door is detached from the housing. When the lock member is rotated to the allowable position, the engagement member can be rotated from the engagement position to the release position.

Japanese Patent No. 3771247

  In the hinge device described in Patent Document 1, the lock member is manually rotated. For this reason, it may forget to rotate the lock member to the blocking position, and in such a case, there has been a problem that it is impossible to prevent a situation in which the door is detached from the housing.

The present invention has been made to solve the above problems, and includes a base, a main body, a mounting member connected to the main body so as to be rotatable between a closed position and an open position, and the base. And a first engagement mechanism that is detachably engaged between the one end portions, and is provided between the other end portions of the base portion and the main body portion. A second engagement mechanism that removably engages the end portions, wherein one end portion and the other end portion of the base portion and the main body portion are the first engagement mechanism and the second engagement mechanism. The main body is detachably attached to the base by being engaged with each other, and the second engagement mechanism is connected to the other end of either the base or the main body and the other end of the other Between the engagement position engaged with the part and the release position where the engagement with the other end of the other part is released. A locking member is provided on one of the base and the main body, and when the mounting member is located at the open position, the locking member A blocking position for preventing the engagement member from being displaced from the engagement position toward the release position, and an allowable position for allowing the engagement member to be displaced from the engagement position to the release position. In the hinge device that is displaceable, the opening of the mounting member is changed so that the locking member is displaced from the allowable position to the blocking position as the mounting member rotates from the open position to the closed position. A drive mechanism is provided for displacing the lock member from the allowable position to the blocking position side in accordance with the rotation from the position to the closed position side.
In this case, the drive mechanism moves the lock member from the allowable position to an intermediate position between the allowable position and the blocking position in conjunction with the rotation of the mounting member from the open position side to the closed position side. In addition to the drive mechanism, it is desirable to further include a cam mechanism for displacing the lock member from the intermediate position to the blocking position.
It is desirable that the drive mechanism displaces the lock member from the allowable position to the blocking position in conjunction with the rotation of the mounting member from the open position side to the closed position side.

  When attaching a door to a housing | casing, a base is attached to a housing | casing and an attachment member is attached to a door. And a main-body part is attached to a base in the state which made the attachment member located in the open position. At this time, even if the lock member is located at the allowable position, when the door and the mounting member are rotated from the open position to the closed position, the displacement mechanism displaces the lock member from the allowable position to the blocking position. Therefore, according to this invention having the above-described characteristic configuration, the lock member can be reliably displaced to the blocking position.

FIG. 1 is a perspective view showing a hinge device according to a first embodiment of the present invention attached to a housing and a door. FIG. 2 is a perspective view showing the embodiment in a state where the attachment member is located at the open position. FIG. 3 is a perspective view showing the embodiment in a state where the mounting member is located at the closed position. FIG. 4 is a plan view showing the embodiment in a state where the mounting member is located at the open position. FIG. 5 is a side view of the same. 6 is a cross-sectional view taken along line AA in FIG. FIG. 7 is a plan view showing the embodiment in a state where the attachment member is located at the closed position. FIG. 8 is a side view of the same. 9 is a cross-sectional view taken along line BB in FIG. FIG. 10 is an exploded perspective view showing the base of the embodiment. FIG. 11 is an exploded perspective view showing components from the main body portion to the mounting member according to the embodiment. FIG. 12 is an exploded perspective view seen from a different direction from FIG. FIG. 13 is a side view showing the embodiment in a state where the mounting member is positioned at the open position and the lock member is positioned at the allowable position. FIG. 14 is a side view showing the embodiment in a state where the attachment member is rotated from the open position toward the closed position until the lock member is located at the rotation start position. FIG. 15 is a side view showing the mounting member in the closed position and the lock member in the blocking position. FIG. 16 is a perspective view showing a second embodiment of the present invention in a state where the mounting member is located at the closed position. FIG. 17 is a plan view of the second embodiment. FIG. 18 is a side view of the second embodiment. FIG. 19 is an enlarged cross-sectional view taken along line AA in FIG. 20 is an enlarged cross-sectional view taken along line BB in FIG. FIG. 21 is a cross-sectional view similar to FIG. 19, showing the mounting member in the open position. FIG. 22 is a cross-sectional view similar to FIG. 20, showing the mounting member in the open position. FIG. 23 is a perspective view showing a base portion of the second embodiment. FIG. 24 is an exploded perspective view showing each configuration on the main body side removed from the base portion of the second embodiment. FIG. 25 is a perspective view showing a state when the main body and the base are attached to the second embodiment.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 to 15 show a first embodiment of a hinge device according to the present invention. The hinge device 1 of this embodiment is for connecting a door B that opens and closes a front opening of the casing A to a casing A having an open front so that the door B can be rotated in the horizontal direction. It has a main body 3 and a mounting member 4.

  The base portion 2 is formed by press-molding a metal plate. In particular, as shown in FIG. 10, a pair of side plate portions 2a and 2a facing each other and extending in parallel, and the pair of side plate portions 2a and 2a. A connecting plate portion 2b that connects one side portions along the longitudinal direction of the two plate portions, and fixed plate portions 2c and 2c that protrude in a direction orthogonal to the side plate portion 2A so as to be separated from the other side portion of each side plate portion 2a. is doing. The side plate portions 2a and 2a, the connecting plate portion 2b, and the fixed plate portions 2c and 2c are integrally formed. The base 2 does not necessarily have such a structure, and may have another structure as well as the base of other known hinge devices.

  The fixing plate portions 2c and 2c are fixed to the inner surface of the left side wall by screwing and tightening screws (not shown) penetrating the fixing plate portions 2c and 2c into the left side wall of the casing A. Thereby, the base 2 is attached to the inner surface of the left side wall of the housing A. In this case, the base 2 is attached to the housing A with the longitudinal direction of the side plate portion 2a facing the front-rear direction of the housing A and the opposing direction of the pair of side plate portions 2a, 2a facing the vertical direction. . The base 2 may be attached to the inner surface of the right side wall of the casing A, or may be attached to the inner surface of the upper wall. In the following, for convenience of explanation, each configuration of the hinge device 1 will be described using front, rear, left, right, and top and bottom of the housing A. Of course, each structure of the hinge apparatus 1 is not limited to it.

  The main body 3 is formed by molding a metal plate, and particularly as shown in FIGS. 11 and 12, side plate portions 3a and 3a that face each other vertically and extend in parallel in the front-rear direction, and the side plate portions. The connecting plate portion 3b that connects the right side portions along the longitudinal direction of 3a, 3a is formed in a “U” cross section.

  The main body 3 is disposed in a state in which the open portion faces the inner surface of the left side wall of the housing A. Inside the main body 3, side plate portions 2 a and 2 a and a connecting plate portion 2 b of the base portion 2 are inserted. The interval between the inner surfaces of the side plate portions 3a, 3a facing each other is set to be substantially the same as the interval between the outer surfaces of the side plate portions 2a, 2a. Therefore, in a state where the side plate portions 2 a and 2 a of the base 2 are inserted into the main body 3, the main body 3 cannot move in the vertical direction with respect to the base 2. Moreover, the front end portion (one end portion) and the rear end portion (other end portion) of the main body portion 3 are first and second described below at the front end portion (one end portion) and the rear end portion (other end portion) of the base portion 2. The engagement mechanisms 5 and 6 are detachably engaged with each other. When one end and the other end of the base 2 and the main body 3 are engaged with each other, the main body 3 cannot move in the front-rear direction and the left-right direction with respect to the base 2. Therefore, when the side plate portions 2a, 2a and the connecting plate portion 2b are inserted into the main body portion 3 and one end portion and the other end portion of the base portion 2 and the main body portion 3 are engaged with each other, the main body portion 3 is The base 2 is detachably attached in a fixed position. Hereinafter, the position of the main body 3 with respect to the base 2 when the main body 3 is attached to the base 2 is referred to as an attachment position.

  The first engagement mechanism 5 will be described. In particular, as shown in FIG. 10, a first engagement recess 51 is formed on the front end surface (right end surface in FIG. 10) of the side plate portion 2 a of the base portion 2. The first engaging recess 51 is open toward the front. As shown in FIGS. 11 and 12, a first engagement shaft 52 whose axis is directed in the vertical direction is fixed to the front end portion (right end portion in FIG. 11) of the main body portion 3. When the main body 3 is located at the attachment position with respect to the base 2, the first engagement shaft 52 enters and engages with the first engagement recess 51 until it hits the bottom of the first engagement recess 51. When the first engagement shaft 52 is engaged with the first engagement recess 51, the front end portion of the main body portion 3 is engaged with the front end portion of the base portion 2 so as not to move backward and in the left-right direction.

  Next, the second engagement mechanism 6 will be described. As shown in FIG. 10, a second engagement recess 61 is formed on the right side surface of the rear end portion of the side plate portions 2 a and 2 a of the base portion 2. The second engaging recess 61 is open toward the right (upward in FIG. 10). On the other hand, as shown in FIGS. 11 and 12, a second engagement shaft 62 whose axis is directed in the vertical direction is fixed to the rear end portions of the side plate portions 3a and 3a of the main body portion 3. The second engagement shaft 62 enters and engages with the second engagement recess 61 until it hits the bottom from the opening. By engaging the second engagement shaft 62 with the second engagement recess 61, the rear end portion of the main body portion 3 is engaged with the rear end portion of the base portion 2 so as not to move in the front-rear direction and the left-right direction.

  As shown in FIG. 10, an engaging member 63 is attached to the rear end portions of the side plate portions 2a, 2a of the base portion 2 so as to be rotatable in a horizontal direction via a shaft 64 whose axis is directed in the vertical direction. . The engagement member 63 is rotatable between the engagement position shown in FIGS. 6 and 9 and a release position spaced from the engagement position by a predetermined angle in the counterclockwise direction in FIG. When the main body 3 is detached from the base 2, the engaging member 63 can be rotated by a slight angle (for example, about 5 °) beyond the engaging position. The distal end portion of 63 abuts against the connecting plate portion 2 b of the base portion 2. Thereby, the rotation of the engagement member 63 in the direction from the release position to the engagement position is prevented. Hereinafter, the position of the engaging member 63 at this time is referred to as a standby position. The engagement member 63 is urged to rotate in a direction from the standby position toward the engagement position by a rotation urging means 65 made of a coil spring.

A recess 63 a is formed on the front end surface of the engaging member 63. When the engaging member 63 is located at the engaging position, the concave portion 63a is arranged so that its longitudinal direction is directed in the front-rear direction and is opened forward. When the engagement member 63 is located at the engagement position, the second engagement shaft 62 enters the recess 63a. Moreover, since the engaging member 63 is urged from the release position toward the engagement position by the rotation urging means 65, the bottom of the recess 63 a abuts against the second engagement shaft 62. In other words, the engagement position of the engagement member 63 is determined by the bottom of the recess 63 a abutting against the second engagement shaft 62.

  In the state where the engagement member 63 is located at the engagement position, the second engagement shaft 62 has entered the recess 63a, so that the second engagement shaft 62 is moved from the engagement position to the release position. Unless it rotates, it cannot escape from the second engaging recess 61. That is, the rear end portion of the main body portion 3 cannot be removed from the rear end portion of the base portion 2. Here, the shaft 64 which is the rotation center of the engagement member 63 is disposed on the left extension of the second engagement recess 61. In addition, when the engagement member 63 is located at the engagement position, the longitudinal direction of the recess 63a faces the front-rear direction. Therefore, even if an external force is applied to the rear end portion of the main body portion 3 to move the rear end portion to the right and extract the second engagement shaft 62 from the second engagement recess 61, The external force is received by the base 2 through the shaft 64, and the engagement member 63 is not rotated from the engagement position to the release position side by the external force. Therefore, even if an external force is applied to the main body 3, the second engagement shaft 62 is not pulled out from the second engagement recess 61 and the engaged state with the second engagement recess 61 is maintained. In other words, unless the engagement member 63 is rotated from the engagement position to the release position against the urging force of the rotation urging means 65, the engagement between the second engagement recess 61 and the second engagement shaft 62 is maintained. The combined state is not released.

  The engaging member 63 has an inclined surface 63b. The inclined surface 63b is disposed on the right side of the opening of the recess 63a and is inclined so as to be separated from the recess 63a toward the rear. The inclined surface 63b is used when the main body 3 is attached to the base 2 as described below.

The main body 3 can be attached to and detached from the base 2 as follows. When the main body 3 is attached to the base 2, the main body 3 is inclined in advance so that the front end of the main body 3 is closer to the base 2 than the rear end. Further, the first engagement shaft 52 of the first engagement mechanism 5 is positioned in front of the first engagement recess 51. In this state, the main body 3 is moved closer to the base 2, and the side plate 2 a of the base 2 and the front end of the connecting plate 2 b are inserted into the front end of the main body 3. Then, the first engagement shaft 52 is opposed to the first engagement recess 51 in the front-rear direction. Thereafter, the main body 3 is moved rearward, and the first engagement shaft 52 is inserted into the first engagement recess 51 until it hits the bottom. Thereby, the front end portion of the main body portion 3 is engaged with the front end portion of the base portion 2.

Next, the main body 3 is rotated about the first engagement shaft 52, and the rear end of the main body 3 is brought close to the base 2. When the main body 3 is rotated to a position that is closer to the mounting position by a predetermined angle, the second engagement shaft 62 comes into contact with the inclined surface 63b of the engagement member 63 positioned at the standby position. When the main body 3 is further rotated, the second engagement shaft 62 pushes the inclined surface 63b to the left, and the engagement member 63 is engaged from the standby position against the urging force of the rotation urging means 65. Rotate to the release position side. At the same time, the second engagement shaft 62 slides on the inclined surface 63 b toward the opening of the recess 63 a and enters the second engagement recess 61. When the main body 3 is rotated to the attachment position, the second engagement shaft 62 hits the bottom of the second engagement recess 61, and the main body 3 cannot be rotated any further. In addition, at this time, the second engagement shaft 62 faces the concave portion 63a in the front-rear direction, and the second engagement shaft 62 can enter the concave portion 63a. Therefore, the engagement member 63 is rotated toward the engagement position by the rotation urging means 65, and the second engagement shaft 62 enters the recess 63a. When the engagement member 63 reaches the engagement position, the second engagement shaft 62 hits the bottom of the recess 63a, and the engagement member 63 stops. In this state, the engagement member 63 is engaged with the rear end portion of the main body portion 3 via the second engagement shaft 62, and as a result, the rear end portion of the main body portion 3 is engaged with the rear end portion of the base portion 2. As a result, the rear end portion of the main body portion 3 cannot move in the front-rear direction and the left-right direction with respect to the rear end portion of the base portion 2.

As described above, when the main body 3 is positioned at the mounting position with respect to the base 2, the base 2 and the front end of the main body 3 are engaged with each other by the first engagement mechanism 5 so as to be immovable in the left-right direction and the rear. At the same time, the rear end portions of the base portion 2 and the main body portion 3 are engaged by the second engagement mechanism 6 so as not to move in the left-right direction and the front-rear direction. Thereby, the main-body part 3 is attached to the base 2 so that it cannot move in the front-rear direction and the left-right direction. Moreover, when the side plate portions 2 a and 2 a of the base portion 2 are inserted into the main body portion 3, the main body portion 3 is not movable in the vertical direction with respect to the base portion 2. Therefore, the main body 3 is attached to the base 2 in a fixed position.

When removing the main body 3 from the base 2, the engaging member 63 is rotated from the engagement position to the release position against the urging force of the rotation urging means 65. Then, the second engagement shaft 62 can be relatively disengaged from the recess 63a, and the second engagement shaft 62 can be disengaged to the right from the second engagement recess 61. As a result, the rear end portion of the main body portion 3 is the base portion. 2 can be separated and moved to the right with respect to the rear end portion. Therefore, the main body 3 is rotated about the first engagement shaft 52 and the rear end of the main body 3 is moved away from the rear end of the base 2. When the rear end portion of the main body portion 3 is appropriately moved away, the second engagement shaft 62 comes out of the second engagement recess 61. Therefore, the main body 3 can move forward. When the main body 3 is moved forward by an appropriate distance, the first engagement shaft 52 comes out of the first engagement recess 51 forward. As a result, the front end portion of the main body portion 3 can move to the right with respect to the front end portion of the base portion 2. The main body 3 can be removed from the base 2 by moving the front end of the main body 3 from the front end of the base 2 to the right by a distance.

When attaching the main body 3 to the base 2, the engaging member 63 may be rotated to the release position in advance when the rear end of the main body 3 is moved closer to the rear end of the base 2. Good. In that case, the second engagement shaft 62 does not hit the inclined surface 63b. Of course, after the main body 3 is rotated to the attachment position, the engagement member 63 is rotated from the release position to the engagement position by the rotation biasing means 65. As a result, the main body 3 is attached to the base 2.

As shown in FIG. 1, the attachment member 4 is fixed to the door B. Moreover, the attachment member 4 is attached to the main body 3 so as to be rotatable in the horizontal direction as described below. Thereby, the door B is attached so that rotation with respect to the housing | casing A in a horizontal direction is possible. Therefore, when the door B is rotated, the attachment member 4 rotates together with the door B between the closed position and the open position. Therefore, in the following, the position of the attachment member 4 when the door B is in the closed position is also referred to as the closed position, and the position of the attachment member 4 when the door B is in the open position is also referred to as the open position. Called.

The attachment member 4 is rotatably attached to the main body 3 as follows. That is, one end portion of the first link 7 (the lower end portion in FIGS. 6 and 9) is an intermediate portion in the longitudinal direction of the side plate portions 3 a and 3 a of the main body portion 3 and on the side portion on the connection plate portion 3 b side. It is connected via a shaft 8 whose axis is directed vertically. The rear end portion of the second link 9 is connected to the other end portion of the first link 7 via a shaft 10 parallel to the shaft 8 so as to be rotatable. The front end portion of the second link 9 is rotatably connected to the attachment member 4 via a shaft 11 parallel to the shaft 8.

One end portion of the third link 12 is connected to the front end portions of the side plate portions 3 a and 3 a of the main body portion 3 via a shaft 13 parallel to the shaft 8 so as to be rotatable. The other end of the third link 12 is connected to an intermediate portion of the second link 9 via a shaft 14 parallel to the shaft 8 so as to be rotatable. The rear end portion of the fourth link 15 is connected to the other end portion of the third link 12 and in front of the shaft 14 via a shaft 16 parallel to the shaft 8. A front end portion of the fourth link 15 is rotatably connected to the attachment member 4 via a shaft 17 parallel to the shaft 8. In this way, the attachment member 4 is rotatably connected to the main body 3. Reference numeral 18 denotes a reinforcing member for the mounting member 4. The reinforcing member 18 is fixed to the mounting member 4 by a sleeve 19 that is extrapolated to the shaft 11. Both end surfaces of the sleeve 19 are in contact with both inner surfaces of the end portion of the link 9 facing each other.

As shown in FIGS. 6 and 9, a stop mechanism 20 is provided between the main body 3 and the third link 12. The stop mechanism 20 is a force of a predetermined magnitude that the mounting member 4 rotates from the stop position to the closed position side when the mounting member 4 rotates from the open position toward the closed position to a predetermined stop position. The stop member 21 is provided. The stop member 21 is fixed to the distal end portions of the side plate portions 3 a and 3 a of the main body portion 3 by the engagement shaft 52 and the shaft 13. On the outer surface of the stop member 21, an arc surface 21 a centering on the shaft 13 and an abutting surface 21 b extending radially inward from the front end of the arc surface 21 are formed.

On the other hand, a spring receiver 22 is fixed to the third link 12 by shafts 14 and 16. The spring receiver 22 is provided with a biasing means 23 made of a coil spring. Further, the third link 12 is provided with a contact shaft 24 parallel to the shaft 8 so as to be movable within a predetermined range in a direction approaching and separating from the shaft 13 (radial direction of the shaft 13). The contact shaft 24 is urged in a direction approaching the shaft 13 by urging means 23 formed of a coil spring.

As shown in FIG. 6, when the attachment member 4 is in the open position, the contact shaft 24 is separated forward from the contact surface 21b. Therefore, the attachment member 4 can rotate between the stop position and the open position with almost no resistance. However, when the attachment member 4 rotates from the open position toward the closed position and reaches the stop position, the contact shaft 24 moves rearward and abuts against the contact surface 21b. Thereby, the attachment member 4 is stopped at the stop position. However, the abutting surface 21b moves rightward against the urging force of the urging means 23 when the abutting shaft 24 moves rearward as the mounting member 4 rotates toward the closed position. Inclined to move to. Therefore, the contact surface 21b rotates the attachment member 4 toward the closed position with a force larger than the force necessary to push up the contact shaft 24 against the urging force of the urging means 23. It can be rotated from the stop position to the closed position.

When the mounting member 4 is rotated from the stop position to the closed position, the contact shaft 24 slides on the contact surface 21b toward the circular arc surface 21a. When the attachment member 4 rotates from the stop position to the closed position by a predetermined angle (for example, about 5 °), the contact shaft 24 gets over the contact surface 21b and comes into pressure contact with the arc surface 21a. The circular arc surface 21 a is centered on the axis 13. In addition, the third link 12 provided with the contact shaft 24 rotates about the shaft 13. Therefore, the contact shaft 24 slides or rolls on the arc surface 21a between the stop position (actually, a position separated by 5 ° from the stop position toward the closed position) and the closed position. Move. Therefore, the attachment member 4 is rotated against the sliding frictional resistance or rolling frictional resistance generated between the contact shaft 24 and the arcuate surface 21a, and between the stop position and the closed position, The attachment member 4 can be stopped at an arbitrary position by these resistances.

As described above, the main body 3 can be detached from the base 2 by rotating the engagement member 63 from the engagement position to the release position. In other words, if the engagement member 63 is rotated from the engagement position to the release position due to an unexpected accident, the main body 3 may be detached from the base 2. In order to prevent such a situation in advance, a lock member 31 is provided at an intermediate portion in the longitudinal direction of the main body 3.

The lock member 31 is formed by bending a hard metal wire such as a piano wire into a “U” shape and further bending both ends thereof so as to approach each other. A pair of arm portions 31b and 31b extending in parallel and in the same direction from both ends of the stop portion 31a, and shaft portions 31c and 31c protruding so as to approach each other from the tip portions of the arm portions 31b and 31b. Has been.

The shaft portions 31c and 31c of the lock member 31 are arranged with their axial directions directed in the vertical direction, and are rotatably supported by intermediate portions in the longitudinal direction of the side plate portions 3a and 3a of the main body portion 3. Thereby, the lock member 31 is connected to the main body 3 so as to be rotatable in the horizontal direction around the shaft portions 31c and 31c. The lock member 31 can rotate between an allowable position shown in FIG. 13 and a blocking position shown in FIG. The allowable position is determined by the engaging portion 31a of the lock member 31 abutting against the back surface of the first link 7 when the attachment member 4 is in the open position. On the other hand, the blocking position is determined as follows. That is, a notch portion 3c is formed at the rear end portion of the connecting plate portion 3b. The notch 3c penetrates the connecting plate 3b to the left and right and reaches the side plates 2a and 2a. The notch 3c is arranged so that the locking portion 31a of the lock member 31 enters when the lock member 31 rotates counterclockwise in FIG. 13 from the allowable position. As shown in FIG. 15, the position of the lock member 31 when the locking portion 31a hits the bottom of the notch 3c is the blocking position.

A locking surface 63 c is formed on the right side of the intermediate portion of the engaging member 63. The locking surface 63c is disposed so as to substantially contact the locking portion 31a of the lock member 31 when the engagement member 63 is positioned at the engagement position and the lock member 31 is positioned at the blocking position. . Therefore, when the engaging member 63 tries to rotate from the locking position to the releasing position, the locking surface 63 c hits the locking portion 31 a of the lock member 31. Thereby, the rotation of the engagement member 63 from the engagement position to the release position side is prevented. Therefore, when the lock member 31 is positioned at the blocking position, the engagement member 63 is prevented from rotating from the engagement position to the release position side due to an accident, and as a result, the main body 3 is detached from the base 2. Can be prevented in advance.

Thus, by positioning the lock member 31 at the blocking position, it is possible to prevent the main body 3 from being detached from the base 2, but if the lock member 31 is forgotten to rotate to the blocking position, There is a possibility that the locking action of the member 31 with respect to the engaging member 63 does not function at all, and the engaging member 63 rotates from the engaging position to the releasing position and the main body 3 is detached from the base 2. In order to prevent such problems, the hinge device 1 employs a displacement mechanism 40. When the attachment member 4 rotates from the open position to the closed position, the displacement mechanism 40 automatically rotates the lock member 31 from the allowable position to the blocking position.

The displacement mechanism 40 has a drive mechanism 40A and a cam mechanism 40B. The drive mechanism 40A is for rotating the lock member 31 from the allowable position to the intermediate position shown in FIG. 14 as the mounting member 4 rotates from the open position to the closed position. The second link 9 is used. That is, when the attachment member 4 is in the open position, the first link 7 moves forward as it moves away from the main body 3 to the right (upward in FIG. 13), as shown in FIG. When the mounting member 4 is tilted from the open position to the closed position, it rotates counterclockwise about the shaft 8. Therefore, when the mounting member 4 is turned to the closed position side in a state where the mounting member 4 is in the open position and the lock member 31 is in the allowable position, the lock member that hits the back surface of the first link 7. 31 is rotated counterclockwise by the first link 7. When the lock member 31 reaches a position that is a predetermined angle from the intermediate position to the front position, the rear end surface of the second link 9 passes behind the back surface of the first link 7 and abuts against the arm portion 31 b of the lock member 31. Therefore, after that, the second link 9 rotates the lock member 31 counterclockwise as the mounting member 4 rotates toward the closed position. The lock member 31 is rotated to the intermediate position by the second link 9.

After the lock member 31 is rotated from the allowable position to the intermediate position, the cam mechanism 40B rotates the lock member 31 from the intermediate position to the blocking position. The cam mechanism 40 </ b> B has a protruding portion 41 formed on each side plate portion 3 a of the main body portion 3. The protruding portion 41 is arranged on the right side so as to contact the outer peripheral surface of the shaft portion 31 c of the lock member 31. Therefore, the arm portion 31b of the lock member 31 is in contact with the outer surface of the protruding portion. The outer surface of the protruding portion 41 with which the arm portion 31b comes into contact is formed by an arc surface. The center line of this circular arc surface extends in the left-right direction and is orthogonal to the center line of the shaft portion 31c. Therefore, the protrusion amount of the protrusion 41 with respect to the outer surface of the side plate portion 3a is the lowest at both ends in the front-rear direction of the protrusion 41, and both ends in the front-rear direction of the outer surface of the protrusion 41 are the outer surfaces of the side plate portion 3a. Intersects. The protruding amount of the protruding portion 41 is highest at the central portion in the front-rear direction.

The interval between the arm portions 31b and 31b of the lock member 31 is set to be approximately equal to the interval between the outer surfaces of the side plate portions 3a and 3a. Therefore, the arm portions 31b and 31b are elastically deformed by the protruding portion 41 so that the distance between them is increased. In other words, the arm portion 31b is pressed against the outer surface of the projecting portion 41 forming an arc shape by its own elasticity. Therefore, when the arm portion 31b (the lock member 31) is in contact with a portion separated in the front-rear direction from the center portion in the front-rear direction of the projecting portion 41, the center of the projecting portion 41 is formed by the arc-shaped outer surface of the projecting portion 41. Rotating biasing force that is separated from the part is received. However, when the arm portion 31b is located within a range of a predetermined angle (for example, 10 °) from the center of the outer surface of the protrusion 41 to the front-rear direction, the inclination angle of the protrusion 41 with respect to the front-rear direction in that range is small. The rotational biasing force on the arm portion 31b by the arc surface of the protruding portion 41 is smaller than the frictional resistance generated between the contact surface between the outer surface of the protruding portion 41 and the arm portion 31b. Therefore, the lock member 31 is not rotated by the outer surface of the protruding portion 41 in the angular range.

However, if the above-mentioned range is exceeded in the arm portion 31b, the inclination angle of the arc surface that constitutes the outer surface of the protruding portion 41 increases, and the rotational biasing force of the arc surface against the arm portion 31b increases. Then, the arm portion 31 b is rotated by the rotation biasing force so as to be separated from the center of the protruding portion 41. A position where the arm portion 31b is spaced forward from the center of the protruding portion 41 by the predetermined angle is an intermediate position. Therefore, when the arm portion 31b is rotated to the intermediate position by the second link 9, the arc surface constituting the outer surface of the protruding portion 41, the arm portion 31b in contact with the arc surface, and the elastic force of the arm portion 31b itself, The lock member 31 is rotated from the intermediate position to the blocking position.

Note that the second link 9 tries to turn the lock member 31 to the blocking position side until the lock member 31 slightly exceeds the intermediate position. However, the arc surface of the protrusion 41 rotates the lock member 31 from the intermediate position to the blocking position side faster than the second link 9 rotates the lock member 31 from the intermediate position to the blocking position side. Therefore, after the lock member 31 reaches the intermediate position, the lock member 31 is rotated to the blocking position side by the cam mechanism 40B.

In the hinge device 1 having the above-described configuration, it is assumed that the attachment member 4 is now in the open position as shown in FIG. 13 and the lock member 31 is in the allowable position. In this state, when the attachment member 4 is rotated from the open position toward the closed position, the first link 7 rotates about the shaft 8 in the counterclockwise direction in FIG. As a result, the lock member 31 in contact with the back surface of the first link 7 is rotated counterclockwise from the allowable position toward the intermediate position. Thereafter, when the attachment member 4 is further rotated to the closed position side, the second link 9 rotates the lock member 31 counterclockwise to the intermediate position.

When the lock member 31 reaches the intermediate position, the arm portion 31b is pushed rearward by the elastic force of the arm portion 31b and the cam action of the arc surface forming the outer surface of the protrusion 41, and the lock member 31 is moved from the intermediate position to the blocking position. Can be rotated. Therefore, according to the hinge device 1, the lock member 31 can be automatically positioned to the blocking position by rotating the door B from the open position to the closed position.

When the lock member 31 is located at the blocking position, the engagement member 63 cannot rotate from the engagement position toward the release position, and the second engagement shaft 62 does not come out of the recess 63a. Accordingly, the second engagement shaft 62 is not pulled out from the second engagement recess 61, and the state in which the engagement member 63 is engaged with the rear end portion of the base portion 2 is maintained. Therefore, the situation where the main body 3 is detached from the base 2 due to an unexpected accident can be reliably prevented.

Next, a second embodiment of the hinge device according to the present invention shown in FIGS. 16 to 25 will be described. In addition, about the hinge apparatus 1A of 2nd Embodiment, suppose that only a different structure from the hinge apparatus 1 of the said 1st Embodiment is demonstrated, the same code | symbol is attached | subjected to the same part, and the description is abbreviate | omitted. . 16 to 25, the front-rear direction of the hinge device 1A is opposite to the front-rear direction of the hinge device 1 shown in FIGS.

  In the hinge device 1A of this embodiment, a base 2A and a main body 3A are used in place of the base 2 and the main body 3 of the hinge device 1. As shown in FIG. 23, the base portion 2A is made of a metal flat plate, and the side plate portions 2a and 2a are formed by raising an inner portion separated from the outer peripheral surface. Since the side plate portions 2a and 2a are formed by cutting and raising the inner portion of the flat plate, both end portions in the front-rear direction of the fixed plate portions 2c and 2c are connected to each other to form an annular shape. Moreover, the connection board part which connects the side parts of the side plate parts 2a and 2a is not formed.

  The pair of side plate portions 3a and 3a of the main body portion 3A are connected to each other at the base portion 2A side by a connecting plate portion 3b. The side plate portions 3a and 3a and the connecting plate portion 3b are inserted between the side plate portions 2a and 2a of the base 2 with the connecting plate portion 3b first. The interval between the outer surfaces of the side plate portions 3a, 3a is set to be approximately equal to the interval between the inner surfaces of the side plate portions 2a, 2a of the base portion 2A. Therefore, when the side plate portions 3a and 3a of the main body portion 3A are inserted between the side plate portions 2a and 2a of the base portion 2A, the main body portion 3A cannot move in the vertical direction with respect to the base portion 2A.

  Further, in this hinge device 1A, the first engagement shaft 52 of the first engagement mechanism 5 is not used, and the shaft 13 that rotatably connects one end portion of the third link 12 to the main body portion 3A is provided. This is also used as the first engagement shaft of the first engagement mechanism 5. A second engagement mechanism 6A that replaces the second engagement mechanism 6 is provided between the rear end of the base 2A (the right end in FIGS. 16 to 25) and the rear end of the main body 3A. That is, as shown in FIG. 23, a second engagement shaft 62 whose axis is directed in the vertical direction is fixed to the rear end portion of the base portion 2A. On the other hand, a second engagement recess 61 with which the second engagement shaft 62 engages is formed at the rear end of the main body 3A, as shown in FIGS. Further, an engaging member 63A is provided at the rear end portion of the main body 3 so as to be rotatable in the horizontal direction via a shaft 64. The engaging member 63A is composed of two members 63B and 63C, and both the members 63B and 63C are fixed to each other so as to behave integrally. The rotation range of the engagement member 63A is determined from the standby position to the release position separated from the engagement position by a predetermined angle in the arrow direction of FIG. 21 through the engagement position shown in FIGS. .

  As shown in FIG. 25, when the main body 3 </ b> A is rotated about the shaft 13 in the direction of the arrow in FIG. 25 with the shaft 13 engaged with the first engagement recess 51 of the first engagement mechanism 5. The second engagement shaft 62 relatively enters the second engagement recess 61. At the same time, the inclined surface 63 b formed at the left end portion of the engagement member 63 </ b> A hits the second engagement shaft 62. When the main body 3 is further rotated, the inclined surface 63b is relatively pushed by the second engagement shaft 62, so that the engagement member 63A moves from the standby position against the urging force of the rotation urging means 63. It is rotated in a direction (clockwise in FIG. 25) toward the release position through the engagement position. When the main body 3 is rotated to the mounting position, the second engagement shaft 62 abuts against the bottom of the second engagement recess 61, and the second engagement shaft 62 gets over the inclined surface 63b and faces the recess 63a. . Then, the engaging member 63A is rotated clockwise by the rotation urging means 65 to the engaging position. As a result, the second engagement shaft 62 relatively enters the recess 63a until it hits the bottom. Then, the second engagement shaft 62 is kept pressed against the bottom of the second engagement recess 61 by the engagement member 63A. In this way, the rear end portions of the base portion 2A and the main body portion 3A are detachably engaged with each other. Of course, the front end portions of the base portion 2A and the main body portion 3A are detachably engaged by the first engagement mechanism 5. Accordingly, the main body 3A is detachably attached to the base 2A.

  In this hinge device 1A, a stop mechanism 20A is used instead of the stop mechanism 20. That is, as shown in FIGS. 20 and 22, a large-diameter arc surface 25a and a small-diameter arc surface 25b centering on the shaft 16 are formed at one end portion of the fourth link 15 located on the third link 12 side. Yes. Between the large-diameter arc surface 25a and the small-diameter arc surface 25b, a step surface 25c inclined with respect to the diameter line of the shaft 16 is formed. Further, the third link 12 is provided so that the contact shaft 26 can move within a predetermined range in a direction in which the contact shaft 26 approaches and separates from the shaft 16 and can rotate. The abutting shaft 26 is urged in a direction approaching the shaft 16 by an urging means 27 formed of a coil spring and is pressed against one end of the fourth link 15. Here, when the contact shaft 26 and the mounting member 4 are positioned between the closed position and the intermediate position, they are pressed against the large-diameter arc surface 25a, and the mounting member 4 is positioned between the open position and the intermediate position. When pressed, it is pressed against the small-diameter arc surface 25b. Therefore, when the attachment member 4 is located between the closed position and the intermediate position and between the open position and the intermediate position, the contact shaft 26 moves on the large-diameter arc surface 25a or the small-diameter arc surface 25b. It only rolls. Therefore, the rotation of the fourth link 15 and thus the attachment member 4 is not prevented by a large force.

On the other hand, when the attachment member 4 is turned from the open position side to the closed position side and reaches the intermediate position, the contact shaft 26 abuts against the step surface 25c. In this state, the attachment member 4 cannot be closed and rotated unless the contact shaft 26 is rolled up on the step surface 25 c to the large-diameter circular surface 25 a against the urging force of the urging means 27. In other words, in the state where the contact shaft 26 abuts against the step surface 25c, the urging force of the urging means 27 prevents the mounting member 4 from being closed and rotated. Therefore, when the door B is rotated from the open position to the closed position, the door B is stopped with a predetermined force at the intermediate position. Of course, the door B can be closed and rotated from the intermediate position by closing and rotating the door B with a force exceeding a predetermined size.

In the hinge device 1 </ b> A, one end portion (left end portion in FIG. 24) of the first link 7 is rotatably connected to the main body portion 3 </ b> A via the first engagement shaft 51. The shapes of the first link 7, the second link 9, the third link 12 and the fourth link 15 are the same as those of the first link 7, the second link 9, the third link 12 and the fourth link 15 of the hinge device 1. Although different from the shape, the connection form with each other and the connection form with respect to the main body 3 and the attachment member 4 are the same as those in the first hinge device 1. Therefore, the description of the connection form of the first link 7, the second link 9, the third link 12, and the fourth link 15 is omitted.

The present invention is not limited to the above-described embodiment, and various modifications can be employed.
For example, in the above embodiment, the front end portions of the base portion 2 and the main body portion 3 are detachably engaged by the first engagement mechanism 5, and the rear end portions of the base portion 2 and the main body portion 3 are secondly connected. Although the engagement mechanism 6 is detachably engaged, the front end portions of the base portion 2 and the main body portion 3 are removably engaged by the second engagement mechanism, and the rear ends of the base portion 2 and the main body portion 3 are engaged. The parts may be engaged with each other by the first engagement mechanism so as to be disengageable. In that case, the lock member 31 is provided at the front end of the main body 3. Further, although the engaging members 63 and 63A are provided so as to be rotatable, they may be provided so as to be linearly movable between the engaging position and the releasing position.
In the above embodiment, the lock member 31 is provided on the main body 3, but may be provided on the base 2. The lock member 31 is rotationally displaced between the allowable position and the blocking position, but may be linearly displaced between the allowable position and the blocking position. In that case, a lock member having a shape different from that of the lock member 31 is used.
Furthermore, in the above embodiment, the displacement mechanism 40 is configured by the drive mechanism 40A and the cam mechanism 40B, but may be configured by only the drive mechanism. For example, the first or second link 7 or 9 may be provided with a drive member that rotates the lock member 31 from the allowable position to the blocking position as the mounting member 4 rotates from the closed position to the open position. Good.

  The hinge device according to the present invention can be used as a hinge for connecting a door to a clothes chiffon or other housing so as to be capable of opening and closing.

DESCRIPTION OF SYMBOLS 1 Hinge apparatus 1A Hinge apparatus 2 Base part 2A Base part 3 Main body part 3A Main body part 4 Attachment member 5 1st engagement mechanism 6 2nd engagement mechanism 6A 2nd engagement mechanism 31 Lock member 40 Displacement mechanism 40A Drive mechanism 40B Cam mechanism 63 Engaging member 63A engaging member

Claims (3)

A base portion, a main body portion, an attachment member connected to the main body portion so as to be rotatable between a closed position and an open position, and one end portions of the base portion and the main body portion; A first engagement mechanism that removably engages, and a second engagement mechanism that is provided between the other end portions of the base portion and the main body portion and that releasably engages the other end portions. The one end part and the other end part of the base part and the main body part are engaged with each other by the first engaging mechanism and the second engaging mechanism, respectively, so that the main body part can be attached to and detached from the base part. And the second engagement mechanism is engaged with the other end of one of the base and the main body, engaged with the other end, and engaged with the other end. An engagement member provided so as to be displaceable between a released position and a released position, and the base and the main body Is provided with a lock member, and when the attachment member is in the open position, the lock member is displaced from the engagement position to the release position side. In the hinge device that is displaceable between a blocking position for blocking the position and an allowable position for allowing the engagement member to be displaced from the engagement position to the release position,
Rotation of the mounting member from the open position to the closed position so that the locking member is displaced from the allowable position to the blocking position as the mounting member rotates from the open position to the closed position. A hinge device comprising a drive mechanism for displacing the lock member from the allowable position toward the blocking position.   The drive mechanism displaces the lock member from the allowable position to an intermediate position between the allowable position and the blocking position in conjunction with the rotation of the mounting member from the open position side to the closed position side. The hinge apparatus according to claim 1, further comprising a cam mechanism that displaces the lock member from the intermediate position to the blocking position in addition to the drive mechanism.   2. The drive mechanism according to claim 1, wherein the lock member is displaced from the allowable position to the blocking position in conjunction with the rotation of the mounting member from the open position side to the closed position side. Hinge device.

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