JP3054097B2 - Hinge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a hinge for pivotally attaching a door to a frame.

[0002]

2. Description of the Related Art In general, a hinge includes a base member fixed to a frame and a connecting member rotatably mounted on a door. Is rotatably attached to the frame.

As a structure for attaching the connecting member to the base member, the connecting member is connected by an engaging shaft fixed to the connecting member and a detachable engaging mechanism provided between the connecting member and the base member. There are two types, one of which is connected by engaging a pair of engagement shafts provided on the connecting member with the base member. In the former connection structure, the engagement mechanism must be engaged after the engagement shaft is always engaged with the base member, whereas according to the latter connection mechanism, the pair of engagement shafts May be engaged with the base member first, and there is an advantage that the degree of freedom of connection is widened accordingly. The present invention relates to a hinge having the latter connection structure.

[0004] Conventionally, as the hinge having the latter connection structure, for example, there is a hinge described in Japanese Patent Application Laid-Open No. 3-197773. As shown in FIG. 6, the hinge described in this publication includes a connecting member 1 rotatably attached to a skeleton (not shown) and a base member 2 fixed to a door (not shown). Slots 1a, 1 extending in the front-rear direction are provided at the front end (the right end in FIG. 6) and the rear end of the connecting member 2.
b are formed respectively. In each of the slots 1a, 1b,
The engagement shafts 3 and 4 are inserted so as to be movable in the front-rear direction,
An operation member 5 is immovably connected to the engagement shafts 3 and 4. The operation member 5 is urged rearward by a spring (not shown). On the other hand, engaging recesses 2a and 2b whose front portions are open are formed at the front end and the rear end of the base member 2, and a projection 1 formed on the connecting member 1 is formed at an intermediate portion thereof.
An engagement hole 2c into which c is fitted is formed. And
As shown in FIG. 7A, the connecting member 1 and the base member 2 engage the engaging shafts 3 and 4 with the engaging recesses 2a and 2b and fit the projection 1c into the engaging hole 2c. Are linked by

In the hinge having the above structure, when the connecting member 1 is attached to the base member 2, as shown in FIG. 7 (B), one of the engaging shafts 3 is engaged with the engaging recess 2a. The rear end of the connecting member 1 is turned in the direction of the arrow so as to approach the base member 2. Then, the other engagement shaft 4 abuts against the inclined surface 2d of the base member 2 and the projection 1c
Into the engaging hole 2c. When the connecting member 1 is further rotated in the direction of the arrow in this state, the engaging shaft 4 moves along the inclined surface 2d, and accordingly, the operating member 5 moves forward against the urging force of the spring. And the engagement shaft 4 is inclined 2d.
, The operating member 5 is moved backward by the spring, and the engaging shaft 4 is engaged with the engaging concave portion 2b. Thereby, the connecting member 1 is connected to the base member 2. Of course, the other engagement shaft 4 is engaged with the engagement recess 2b,
The front end of the connecting member 1 may be rotated so as to approach the base member 2. In that case, the engagement shaft 3 and the operation member 5 are moved forward by the inclined surface 2 e of the base member 2. The connecting member 1 can be detached from the base member 2 by pushing the operating member 5 forward against the urging force of the spring and disengaging the engaging shafts 3 and 4 from the engaging concave portions 2a and 2b.

[0006]

In the above-mentioned conventional hinge, the pair of engaging shafts 3, 4 are immovably connected to the operating member 5, so that the two engaging shafts 3, 4 are in the same direction. Move the same distance to. Therefore, when the engagement shaft 4 is moved forward by the inclined surface 2d, the engagement shaft 3 is moved forward via the operation member 5, and as shown in FIG. When the vehicle goes over the inclined surface 2d, the engagement shaft 3 is separated from the engagement recess 2a. In this case, if the engaging shaft 3 is located in front of the engaging concave portion 2a even after the engaging shaft 3 is disengaged from the engaging concave portion 2a, the operating member 5 is moved backward by the spring at the moment when the engaging shaft 4 gets over the inclined surface 2d. There is no problem because the two engaging shafts 3 and 4 are fitted into the engaging recesses 2a and 2b. However, at the moment the engaging shaft 4 gets over the inclined surface 2d, the connecting member 1 engages with the projection 1c. Rotating in the direction away from the base member (counterclockwise in FIG. 7 (C)) around the contact point S with the hole 2c, the engaging shaft 3 is moved upward from the engaging recess 2a as shown by the imaginary line in the figure. Will leave. This is a state in which the engagement shaft 4 is previously engaged with the engagement recess 2b,
The same applies to the case where the engaging shaft 3 is to be engaged with the engaging concave portion 2a.

As described above, in the conventional hinge, one engagement shaft 3 (4) is engaged with the engagement recess 2a (2b) while the other engagement shaft 4 (3) is engaged. Recess 2b (2
a), at the moment when the other engagement shaft 4 (3) engages with the engagement recess 2b (2a), one engagement shaft 3 (4) is engaged with the engagement recess 2a (2b). ), The connecting member 1 cannot be attached to the base member 2 in many cases.

[0008]

According to a first aspect of the present invention, there is provided a hinge for rotatably attaching a door to a frame, wherein the base member is fixed to the frame. And a connection member rotatably attached to the door and a pair of engagement recesses provided on the base member, respectively, so that the connection member can be detachably engaged with the base member. A pair of engagement shafts to be connected, an operation member for moving the engagement shaft in a direction to be disengaged from the engagement concave portion, and the pair of engagement shafts via the operation member to move the pair of engagement shafts to the pair of engagement concave portions And a biasing member for biasing the pair of engaging shafts in a direction in which the pair of engaging shafts are movably connected to the connecting member in a direction of being disengaged from the engaging recess. The member is rotatable and disengaged about the one engagement shaft. As well as immovable linked to,
A movement movably connected to the other engagement shaft in the engagement / disengagement direction, and a movement for moving the other engagement shaft in the engagement / disengagement direction between the connection member and the operation member in accordance with the rotation of the operation member; It is characterized by having a mechanism.

It is desirable that the pair of engaging recesses be formed so that the respective open portions face in opposite directions. In this case, the pair of engagement recesses may be formed such that the respective open portions face each other, or may be formed such that the respective open portions face the direction in which they are separated from each other.

It is desirable that the moving mechanism is constituted by a cam mechanism for moving the other engagement shaft in the engaging / disengaging direction in accordance with the rotation of the operating member. The cam mechanism has two long holes provided in the connection member and the operation member, respectively, and through which the other engagement shaft is inserted. It is desirable that the two engaging shafts be inclined with respect to each other so as to provide a positive cam mechanism for moving the other engaging shaft in the disengaging direction when the other engaging shaft is rotated about the engaging shaft. When the operating member is rotated so that the other engagement shaft is disengaged from the engagement recess, the side surface of the engagement recess where the other engagement shaft abuts is defined as a long hole of the connection member. It is desirable to incline at substantially the same angle.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 2 is an exploded perspective view of the hinge A according to the present invention, and FIG. 3 is a sectional view thereof. As shown in these figures, the hinge A includes a base member 10 and a main body 20.

The base member 10 is formed by press-forming a metal plate material, and has a rectangular plate-like substrate portion 1.
1 and side plate portions 1 erected on both sides of the substrate portion 11
2, 12 and fixed plate portions 13, 13 protruding laterally from the side plate portions 12, 12. And the base member 1
Numeral 0 is fixed to the inner surface of the frame (not shown) by screws (not shown) inserted into insertion holes 11a and 13a formed in the substrate portion 11 and the fixing plate portion 13, respectively. I have. In this case, the base member 10 is fixed with the longitudinal direction of the substrate portion 11 directed in the front-rear direction (the left-right direction in FIG. 3) of the frame. Therefore, the side plates 12, 1
2 is opposed in the vertical direction of the frame. In addition, below, up and down, front and rear, and left and right shall mean the up and down, front and back, and left and right with respect to a skeleton.

Protrusions 14, 14 are formed on the front end side of the distal end surfaces of the side plates 12, 12, respectively. On the side of the protrusion 14 facing forward, there is an inclined surface 14 that is inclined toward the substrate 11 as it goes forward.
a is formed, and an engagement concave portion 15 opened forward is formed. The engagement recess 15 is formed so as to face substantially horizontally forward. On the other hand, protruding portions 16, 16 are formed at the rear end portions of the distal end surfaces of the side plate portions 12, 12, respectively. An inclined surface 16a that is inclined so as to approach the substrate portion 11 toward the rear is formed on a side surface facing the rear of the protruding portion 16, and an engaging recess 17 that is opened rearward is formed. ing. The engaging concave portion 17 is inclined so as to move away from the substrate portion 11 toward the rear. Further, each fixed plate portion 13 is formed at its base end portion with a narrow portion 13b narrower than the distal end side.

The main body 20 includes a cup member 21, a main body member 23 rotatably connected to the cup member 21 via an arm 22, and a connecting member 30 detachably attached to the main body member 23. And an operating member 50 connected to the connecting member 30 via engagement shafts 41 and 42 as main components.

The cup member 21 is fixed to a door (not shown) so that the main body member 23 rotates in the horizontal direction. Therefore, when the main body 20 is connected to the base member 10, the door is supported by the frame so as to be rotatable in the horizontal direction.

The main body member 23 is formed in a U-shape in cross section by a top plate portion 23a and side plate portions 23b, 23b protruding from both sides thereof toward the base member 10, respectively. The inner width of the main body member 23, that is, the side plate portion 23b,
The distance between the opposing surfaces of 23b decreases from the front end to the rear end.

The connecting member 30 is fixed to the main body member 23 while being connected to the base member 10,
The main body 20 is connected to the base member 10, and thus the door is connected to the frame. As in the case of the main body member 23, the top plate 31 and both sides project toward the base member 10 from both sides. The side plates 32 are formed in a U-shaped cross section. And the connecting member 30
Are inserted into the main body member 23.

Here, the outer width of the connecting member 30, that is, the distance from the outer surface of one side plate portion 32 to the outer surface of the other side plate portion 32 is substantially the same as the inner width at the rear end of the main body member 23. Has become. Therefore, the connecting member 30 is
It is movable not only in the front-back direction and the front-back direction and the left-right direction with respect to the main body member 23 but also in the up-down direction. By adjusting the vertical and vertical and horizontal mounting positions of the connecting member 30 and the main body member, it is possible to adjust the vertical and front, rear, right and left positions of the door with respect to the skeleton. The following structure is adopted between the first and second members.

That is, the top plate 23 of the main body member 23
A bolt insertion hole 23c is formed at the rear end of b. The bolt insertion hole 23c is formed as a long hole elongated in the front-rear direction, and its rear end is open. The bolt 61 inserted into the bolt insertion hole 23c
Into the female screw hole 3 formed in the top plate portion 31 of the connecting member 30.
The connection member 30 is connected and fixed to the main body member 23 by screwing and tightening the connection member 3. Therefore, by loosening the bolt 61, it is possible to adjust the position of the main body member 23 in the front-rear direction by the length of the bolt insertion hole 23c.

Since the rear end of the bolt insertion hole 23c is open, when the connecting member 30 moves rearward with respect to the body member 23, the bolt 61
c, there is a possibility that the connecting member 30 may come out of the main body member 23 rearward while coming out of the rear end. Therefore, in this embodiment, the side plate portion 23 of the main body member 23 is provided.
The locking projections 23d, 23d projecting inward from the rear ends of the inner surfaces of the inner surfaces of the inner projections 23b, 23b (FIG.
Only shown). When the connecting member 30 relatively moves rearward, the locking projection 23d is
The connecting member 30 is prevented from falling back from the main body member 23 by abutting against the rear end surface of the top plate 31 of the zero.

However, the bolt 61 is largely loosened, the rear end of the main body member 23 is greatly lifted with respect to the connecting member 30, and the locking projection 23 d is not able to abut against the top plate 31 (FIG. 2). (Upward), the locking projection 23c cannot abut against the connecting member 30, so that the rearward relative movement of the connecting member 30 cannot be prevented. Therefore, a bolt seat 23e as a concave portion surrounding the bolt insertion hole 23c is formed in the top plate 23b of the main body member 23. This bolt seat 23
The width of e is substantially the same as the diameter of the head 61a of the bolt 61, but its rear end is narrower than the diameter of the head 61a. Therefore, the main body member 23 is
To the head 61a of the bolt 61
Is in contact with the bolt seat 23e, the rear end of the bolt seat 23e abuts on the head 61a of the bolt 61, thereby preventing the bolt 61 from coming out of the rear end of the bolt insertion hole 23c, and thus the connecting member. 30 is prevented from falling out of the rear end of the main body member 23.

Of course, the rear end portion of the main body member 23 is arranged such that the locking projection 23d is separated from the top plate portion 31 of the connecting member 30 and the head 24a of the bolt 24 is lifted up from the bolt seat 23e by the depth thereof. Rises from the connecting member 30,
The locking projection 23 and the bolt seat 23e cannot exhibit the movement preventing function. For this reason, the connecting member 30
Can not be prevented from slipping backward from the rear end of the main body member 23. However, the rise of the main body member 23 in such a state hardly appears unless the position of the main body member 23 is manually adjusted. If not adjusted manually, the top plate 23 of the main body member 23
a is in contact with the top plate 31 of the connecting member 30 or the bolt seat 23e is in contact with the head 24a of the bolt 24. Therefore, it is possible to almost certainly prevent the connecting member 30 from slipping backward from the main body member 23.

After adjusting the vertical position of the door,
In order to fix the connecting member 30, the adjusting member 62 is provided with a bolt 63 screwed into the screw hole 62a.
Has been fixed by. When the bolt 63 is loosened, the adjusting member 62 has a tip portion rotatable about the bolt 63 in the vertical direction of the frame, and a regulating portion 62b is provided at the tip portion. The restricting portion 62b has substantially the same length as the inner width of the main body member 23. Therefore, when the main body 23 rotates vertically, the adjusting member 6
2 also rotates vertically. The vertical position of the door can be adjusted by rotating the main body member 23.
After the adjustment, the turning position of the main body member 23 can be fixed by tightening the bolt 63, and thereby the vertical position of the door can be fixed.

Next, in the configuration for adjusting the position of the door in the left-right direction, the adjustment of the position of the door in the left-right direction is performed by an adjusting screw 64 in the same manner as a conventional hinge.
The adjusting screw 64 engages with an engaging hole 23 f formed in the top plate portion 23 a of the main body member 23 so as not to move in the left-right direction and movably in the front-rear direction, while a female screw hole formed in the adjusting member 62. 62c. Therefore, when the adjusting screw 64 is appropriately rotated, the front end of the main body member 23 rotates about the rear end, whereby the position of the door in the left-right direction is adjusted.

The connecting member 30 is detachably connected to the base member 10 in the following configuration. That is, elongated holes 34, 34 extending in the front-rear direction are formed at the front ends of the side plates 32, 32 of the connecting member 30. Both ends of the engaging shaft 41 are inserted into the elongated holes 34, 34 so as to be movable in the longitudinal direction of the elongated hole 34, respectively. Elongated holes 35, 35 are formed at the rear ends of the side plates 32, 32 of the connecting member 30. The long hole 35 is inclined so as to move away from the base member 10 toward the rear, and the inclination angle is the same as the inclination angle of the engagement recess 17 when the connecting member 30 is attached to the base member 10. The inclination angle is set such that: Slot 3
Both ends of the engagement shaft 42 are inserted into the holes 5 and 35 movably in the longitudinal direction of the elongated hole 35.

The operation member main body 51 of the operation member 50 made of a relatively hard resin is accommodated inside the connecting member 30. The front end of the operation member main body 51 has a through hole 5 formed therein.
2 are formed. The engaging shaft 41 is fitted into the through hole 52. Therefore, the operation unit body 51
Is rotatable about the engagement shaft 41 with respect to the connecting member 30 and is movable in the front-rear direction by the length of the long hole 34.

On the other hand, a long hole 53 extending in the front-rear direction is formed at the rear end of the operation section main body 51. This long hole 53
, The engagement shaft 42 is inserted movably in the longitudinal direction. Here, when the operating portion main body 51 is rotated to a predetermined position around the engaging shaft 41 in a state where the engaging shaft 41 is positioned at the rear end of the Is opposed to the front end of the long hole 35, and when the operating portion main body 51 is rotated from this state to a predetermined position in a direction away from the base member 10, the rear end faces the rear end of the long hole 35. Are arranged as follows. In addition, while the elongated hole 53 extends in the front-rear direction, the elongated hole 35 of the connecting member 30 is inclined so as to move away from the base member 10 toward the rear. Therefore, when the operation section main body 51 is rotated in a direction away from the base member 10 (hereinafter, referred to as separation rotation), the engagement shaft 42 is moved rearward in accordance with the rotation, and the operation section main body 51 is moved. When rotated so as to approach the base member 10 (hereinafter, referred to as approach rotation),
The engagement shaft 42 is moved forward. The engagement shaft 42
Abuts the front ends of the long holes 35 and 53 and the rear ends thereof, thereby restricting the rotation range of the operation unit main body 51.

As is clear from this, the slots 35, 53
Thus, a positive cam mechanism that moves the engagement shaft 42 in the front-rear direction in accordance with the rotation of the operation unit main body 51 is configured. In this case, the long hole 35 is inclined with respect to the front-back direction,
3 is horizontal, but the long hole 35 is horizontal and the long hole 53
Can be inclined holes.
Can be inclined in opposite directions.

A spring (biasing member) 65 is provided between the operation section main body 51 and the connecting member 30. The spring 65 urges the operation unit main body 51 obliquely rearward, thereby urging the operation unit main body 51 rearward and urging the operation unit main body 51 to approach and rotate. Therefore, in a normal state in which no external force acts on the operation portion main body 51, the engagement shaft 41 is located at the rear end of the elongated hole 34, and the engagement shaft 42 is located at the front end of the elongated holes 35 and 53. I have. Instead of the spring 65, two springs, a spring for urging the operation unit main body 51 rearward and a spring for urging the operation unit main body 51 so as to approach and rotate, may be used.

An operating piece 54, a thin portion 55, and a cover 56 are sequentially formed at the rear end of the operating portion main body 51. The operation piece portion 54 has a surface on the base member 10 side formed in a stepped shape, and a finger is attached thereto to attach the operation portion main body 5.
1 is rotated apart. In addition, thin part 5
5 is flexible, and when this thin portion is bent by approximately 180 °, the cover portion 56 extends along the top plate portion 23a of the main body member 23 and covers the bolts 61 and 63 and the adjusting screw 64.
Then, a fitting hole 57 formed at the tip of the cover 56 is formed.
Is fitted into the operation screw 64, whereby the cover portion 56 is detachably attached to the top plate portion 23a in a vertically attached state.

Next, a case where the main body 20 of the hinge A having the above structure is attached to and detached from the base member 10 will be described with reference to FIG. In FIG. 1, for convenience of illustration, only the base member 10, the engagement shafts 41 and 42, and the operation member 50 are shown, and other members are omitted.

As shown in FIG. 1B, the front engagement shaft 4
When the main body member 23 (connecting member 30) is to be engaged with the engaging concave portion 15 in advance,
0, and the engagement shaft 42 is rotated to approach the inclined surface 16.
hit a. When the connecting member 30 is further rotated in this state, the engaging shaft 42 is moved rearward by the inclined surface 16a. At this time, the engagement shaft 42 moves in the elongated holes 35 and 53, and the engagement shaft 41 and the operation member 50 do not move backward. This point is that the engaging shaft 41 is
It is also evident from the fact that the rearward movement is prevented by 5. When the connecting member 30 is further rotated closer, the engaging shaft 42 gets over the inclined surface 16a and faces the engaging concave portion 17. Then, the operation member 50 is rotated closer by the urging force of the spring 65. When the operating member 50 approaches and rotates, as shown in FIG.
3 to move forward and fit into the engagement recess 17. Thereby, the connecting member 30 is connected to the base member 10.

The engagement shafts 41 and 42 are engaged with the engagement recesses 15 and
17 is engaged with the locking recess 3 formed at the center of each of the both sides 32, 32 of the connecting member 30.
2a fits into the narrow portion 13b of the base member 10, and the connecting member 30 is connected to the base member 10 so as to be immovable in the front-rear direction. Therefore, the engagement shafts 41 and 42 do not fall out of the engagement recesses 15 and 17, and the connection member 30 is securely connected to the base member 10.

Conversely, as shown in FIG. 1C, when the rear engagement shaft 42 is previously engaged with the engagement recess 17, the front end of the connecting member 30 is And the engaging shaft 41 is brought into contact with the inclined surface 14a. When the connecting member 30 is further rotated in this state, the engaging shaft 41 is moved forward in the elongated hole 34 by the inclined surface 14a, and the operating member 50 is
Is moved forward against the urging force. At this time, since the engagement shaft 42 is prevented from moving forward by the engagement recess 17, the engagement shaft 42 does not move forward together with the operation member 50, and relatively moves backward in the elongated holes 35 and 53. Just move on. When the connecting member 30 is further rotated close to and the engaging shaft 42 gets over the inclined surface 14a and faces the engaging concave portion 15, the operating member 50 and the engaging shaft 41 are moved rearward by the spring 65, and the engaging shaft 41 fits into the engagement recess 15. Thereby, the connecting member 30 is connected to the base member 10. When the engaging shafts 41 and 42 are engaged with the engaging recesses 15 and 17, the engaging recess 32a is
3 is similar to the above case.

In the case where the door is previously connected to the frame by another hinge, when the connecting member 30 is rotated closer, the engaging shafts 41 and 42 are turned to the inclined surfaces 14a and 16a.
Hit. In this state, when the front end or the rear end of the connection member 30 is rotated so as to approach the base member 10, the engagement shaft 41 or 42 is turned to the inclined surface 14a or 16a.
And fit into the engagement recesses 15 or 17. Therefore, by rotating the other end of the connecting member 30 so as to approach the base member 10, the engaging shafts 41 and 42 are rotated.
Can be respectively engaged with the engagement recesses 15 and 17.

There are three methods for removing the connecting member 30 from the base member 10. A first method is a method of rotating the operation member 50 apart. When the operation member 50 is rotated apart, the engagement shaft 42 moves rearward along the engagement concave portion 17 and comes out therefrom due to the cam action of the long holes 35 and 53. Thereafter, the connecting member 30 can be removed from the base member 10 by moving the connecting member 30 forward to cause the engaging shaft 41 to slip out of the engaging concave portion 15.

The second detaching method is a method of moving the operation member 50 forward. In this method, first, the operating member 50 is moved forward, whereby the engaging shaft 41 is moved forward along the long hole 34 and is detached from the engaging concave portion 15. Next, while maintaining this state, the connecting member 30 is rotated so that its front end is separated from the base member 10 (the state as shown in FIG. 1C). afterwards,
The connecting member 30 is moved rearward along the engaging concave portion 17,
The engagement shaft 42 is pulled out from the engagement recess 17. This allows
The connecting member 30 can be removed from the base member 10.

The third detaching method is a combination of the first and second detaching methods. In this method, first, the operating member 50 is moved to the engagement shaft 4 by the first detaching method.
2 is disengaged from the engagement recess 17. Thereafter, the engagement shaft 41 is detached from the engagement recess 15 by the second removal method. As a result, as shown in FIG.
The connecting members 30 can be detached from the base member 10 without moving the connecting member 30 in the front-rear direction or rotating without maintaining the mounted posture, since the connecting members 1 and 42 are disengaged from the engaging concave portions 15 and 17. . However, when performing the third removal method, after the operation member 50 is rotated by the first method, only the operation member 50 and the engagement shaft 41 are moved without moving the engagement shaft 42 forward. The length of the long hole 53 is increased so that it can be moved forward, and when the operation member 50 is rotated by the first removing method, the engaging shaft 42 projects to the rear end of the long hole 53. You need to keep it from hitting.

In the above hinge A, the engagement shaft 41,
42 do not move in the same direction at the same time. Therefore, one engagement shaft 41 (42) is engaged with the engagement recess 15 (17).
When the other engagement shaft 42 (41) is engaged with the engagement recess 17 (15) in a state where
(42) does not come out of the engagement recess 15 (17). Therefore, the connecting member 3 with respect to the base member 10
A connection error of 0 can be reliably prevented.

Further, in the hinge A, the operation member 50 is rotated away from the base member 10 due to an unexpected accident such as an object hitting the operation piece 54 of the operation member 50, and the connecting member 30 comes off the base member 10. Can be prevented. That is, when removing the connecting member 30, the operation piece 54 and the cover 56 (the cover 5
6 is detached from the main body 23, the main body 23)
The connecting member 30 can be easily removed from the base member 10 by rotating the operating member 50 away from the base member 10 by sandwiching the operating member 50 with two fingers, but an external force acts only on the operating member 50 due to an accident. In this case, the operation member 50 can be prevented from rotating away.

For convenience of explanation, a case where an external force acts only on the operation member 50 will be described first. When the operating member 50 is pivoted away from the outside by an external force, the engagement shaft 42 moves rearward along the engagement recess 17 by the cam action of the long holes 35 and 53. At this time, when the operation member 50 rotates apart, the inclination angle of the long hole 35 changes by the amount of the rotation. For this reason, as shown in FIG. 4, the inclination angles of the long hole 35 and the engagement concave portion 17 are different from each other. As a result, the engagement shaft 42 cannot move in the engagement recess 17, and the operation member 50 cannot rotate further apart. Therefore, it is possible to prevent the engaging shaft 42 from coming out of the engaging concave portion 17 and prevent the connecting member 30 from coming off the base member 10 due to an accident.

On the other hand, there is a case where the operation member 50 is separated and rotated so that the operation piece portion 54 and the cover portion 56 of the operation member 50 are sandwiched between two fingers. In this case, the operation member 50 is also separated. When rotated, the inclination angle of the long hole 35 changes with respect to the inclination angle of the engagement recess 17. However, when the operation member 50 is rotated by two fingers, the connecting member 30 can be approached and rotated by an amount corresponding to the separation rotation of the operation member 50.
And the difference in the inclination angle of the engagement recess 17 can be offset. Therefore, the engagement shaft 42 can be smoothly extracted from the engagement recess 17. Therefore, the connecting member 30 can be easily removed from the base member 10.

Next, another embodiment of the present invention shown in FIG. 5 will be described. In this embodiment, the point that the engaging recesses 15 and 17 of the base member 10 are opposite to each other is the same as in the above-described embodiment, except that the opening portions are formed so as to face each other. I have. In addition, corresponding to the engagement concave portion 17, the long hole 35 of the connecting member 30 is inclined so as to be separated from the base member 10 as it goes forward. Further, the spring 65
The urging force F acts on the operation member 50 obliquely forward. Therefore, in this embodiment, when the connecting member 30 is attached to and detached from the base member 10, the engaging shafts 41 and 42 move in the opposite direction to the above-described embodiment. This is the same as the embodiment.

[0044]

As described above, according to the first to seventh aspects of the present invention, one engagement shaft is engaged with one engagement recess and the other engagement shaft is engaged with the other engagement shaft. When engaging with the engagement recess, it is possible to reliably prevent a situation in which the other engagement shaft engages with the other engagement recess and at the same time one engagement shaft comes out of the one engagement recess. In addition, it is possible to prevent erroneous attachment of the main body to the base member. In particular, according to the invention of claim 6, it is possible to prevent the main body from coming off the base member due to an accident.

[Brief description of the drawings]

FIG. 1 is a view showing a method of attaching a connecting member to a base member according to an embodiment of the present invention;
1A shows a state in which the connecting member is attached to the base member, and FIGS. 1B, 1C, and 1D each show an example of an attaching method. In addition, illustration of the connection member is omitted in FIG.

FIG. 2 is an exploded perspective view of one embodiment of the present invention.

FIG. 3 is a sectional view of the same embodiment.

FIG. 4 is an enlarged cross-sectional view illustrating a relationship between an engagement shaft, an engagement recess, and a long hole arranged on a rear end side when the operation member is rotated away from the camera;

FIG. 5A shows another embodiment of the present invention.
FIG.

FIG. 6 is a member perspective view showing a connecting member, an operating member, an engagement shaft, and a base member in a conventional hinge.

7A and 7B are diagrams showing a relationship between a connecting member and a base member in the conventional hinge shown in FIG. 6, in which FIG. 7A shows an attached state, and FIG. 7B shows an example of an attaching method. FIG. 7 (C) shows the relationship between the two engagement shafts and the engagement recess immediately before attachment.

[Explanation of symbols]

 A Hinge 10 Base member 15 Engagement recess 17 Engagement recess 20 Main body 30 Connection member 35 Slot 41 Engagement shaft 42 Engagement shaft 50 Operating member 53 Slot 65 Spring (elastic member)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E05D 5/02 E05D 3/06

Claims (7)

(57) [Claims] 1. A hinge for pivotally attaching a door to a frame, a base member fixed to the frame,
The connection member is detachably connected to the base member by removably engaging a connection member rotatably attached to the door and a pair of engagement recesses provided on the base member. A pair of engaging shafts, an operating member for moving the engaging shaft in a direction to be disengaged from the engaging recess, and an operating member for engaging the pair of engaging shafts to the pair of engaging recesses via the operating member. And a biasing member for biasing in a direction in which the operating members are connected to the pair of engagement shafts so as to be movable in a direction in which the engagement shaft is disengaged from the engagement recess. While being connected to the one engagement shaft so as to be rotatable and immovable in the engagement / disengagement direction, and connected to the other engagement shaft so as to be movable in the engagement / disengagement direction, between the connection member and the operation member The other engagement shaft is moved in the disengagement direction according to the rotation of the operation member. Hinge, characterized in that a moving mechanism for. 2. The hinge according to claim 1, wherein the pair of engagement recesses are formed with their open portions facing in opposite directions. 3. The hinge according to claim 2, wherein the pair of engagement recesses are formed with their open portions facing each other. 4. The hinge according to claim 2, wherein the pair of engaging recesses are formed so that the respective open portions face each other. 5. The moving mechanism according to claim 1, wherein said moving mechanism is constituted by a cam mechanism for moving said other engaging shaft in an engaging and disengaging direction in accordance with rotation of said operating member.
4. The hinge according to any one of 4 above. 6. The cam mechanism has two long holes provided in the connection member and the operation member, respectively, and through which the other engagement shaft is inserted. When the operation member is rotated about the one engagement shaft as a center, the other engagement shaft is formed to be inclined with respect to each other so as to constitute a positive cam mechanism for moving the other engagement shaft in the disengagement direction. The hinge according to claim 5, wherein: 7. When the operating member is rotated so that the other engagement shaft is disengaged from the engagement recess, a side surface of the engagement recess abutting on the other engagement shaft is connected to the connection portion. 7. The hinge according to claim 6, wherein the hinge is inclined at the same angle as the elongated hole of the member.