JPH10184179A - Door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set the opening speed of a door to a prescribed speed pattern and reduce the number of parts by providing the door with a support member, a damper, a damper holding part, an elastic member, and a door lock mechanism. SOLUTION: When a door is closed and locked by a floating latch device 3, it is brought in contact with a free end 10f of as elastic member 10 through a through hole 13 so that the free end 10f and an elastic piece 10c are displaced. Secondly, the door 2 is so formed that, when a lock is released, it is opened to a prescribed position by the elastic force of the member 10. When the door 2 is pushed in so as to release the lock, the door is opened to a prescribed position by the elastic force and after that, the opening speed is regulated by the relationship of largeness/smallness between a moment force about the rotary shaft 8 generated by the dead weight of the door 2 and a rotation suppressing moment force generated by the rotation resistance of the damper 6 applied on an elliptical gear face 4d of the hinge 4 via a gear 7. The speed can be thus held at a prescribed value by forming a curved shape of the face 4d. This constitution can provide the door device with high-class appearance and high quality.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device in which an upper end of a door is pulled forward.

[0002]

2. Description of the Related Art FIG. 12 is a partially cutaway side view showing a damper mechanism of a conventional door device, and FIG. 13 is an exploded perspective view thereof.
In the drawing, reference numeral 1 denotes a housing, 2 denotes a door, and 3 denotes a floating latch device which constitutes a lock mechanism of the door 2. When the door 2 is closed and the locking piece 3b is pushed into the floating latch 3a, the floating latch 3a locks the locking piece 3b, and the door 2 is pushed. Then, when the locking piece 3b is pushed again, the lock is released. A pair of hinges 4 are provided on both sides of the lower end of the door 2.
Is fixed, and a hinge hole 4 is formed in the hinge 4 in a horizontal direction.
a, an arcuate tooth profile surface 4b formed coaxially with the shaft hole 4a on the front peripheral surface of the hinge 4, and a locking piece 4c protruding laterally on the upper side of the hinge 4.

[0005] Reference numeral 5 denotes a damper mounting member provided on the housing 1. A gear 7 is supported on the damper 6 and rotates by receiving a rotational resistance T of the damper 6. The housing 1 has a pair of shafts 8 that are inserted into the shaft holes 4 a of the hinge 4 and support the door 2.
And a winding portion is inserted into the shaft 8 and one end is connected to the hinge 4.
And a spring 9 that applies an elastic force in the direction of opening to the door 2 by contacting the other end with a locking piece 5a provided on the damper mounting member 5 at the other end. Further, the gear 7 meshes with the arcuate tooth profile surface 4b of the hinge 4, and when the door 2 is opened, the rotational resistance T of the damper 7 becomes a braking force via the gear 7 and the hinge 4, and the door 2 has its own weight W. It is configured to open gently when opened with.

In the conventional door device configured as described above, when the upper end of the door 2 is pushed in to unlock the floating latch device 3, as shown in FIG. Open to the position shown by the dashed line
Thereafter, the door 2 is opened to the position shown by the two-dot chain line by its own weight W. The moment force M about the shaft 8 due to the own weight W of the door 2 and the arc-shaped tooth profile surface 4b of the hinge 4 via the gear 7 are applied. The opening speed of the door 2 is regulated by the magnitude relation with the rotation suppressing moment force F caused by the rotation resistance force T of the damper 6.

The moment force M of the door 2 due to its own weight W
Is the horizontal distance from the center of rotation to the center of gravity G of the door, and the horizontal distance when the door 2 is closed is L
1. Assuming that the horizontal distance when pushed out by the spring 9 is L2 and the horizontal distance when it is completely opened is L3,
Since L1 <L2 <L3, the moment force M from when the door 2 starts to be opened by its own weight W until it is completely opened is W · (L
3-L2) gradually increases.

On the other hand, the rotation suppressing moment force F by the damper 6 is given by F = T · (radius L of the arc-shaped tooth surface 4b).
4) / (radius L7 of the gear 7), the speed of opening the door 2 is gradually increased because it is always constant. For this reason, when the own weight W of the door 2 is large or when (L3−L2) is large, the opening speed of the door 2 is gradually increased and the door 2 is suddenly stopped. there were.

Further, since the number of parts constituting the damper mechanism is large, assembling work time is prolonged, serviceability is deteriorated, and the cost is increased.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can set the door opening speed to a desired speed pattern, reduce the number of parts, and reduce the cost. The purpose is to obtain a door device that can be used.

[0009]

SUMMARY OF THE INVENTION A door device according to the present invention is a door that covers one surface of a housing so as to be openable and closable, and is mounted on both lower sides of the door to rotatably support the door with respect to the housing. A support member, a damper that engages with the support member and applies a braking force to the door in accordance with the rotation of the door, a damper holding portion that holds the damper, and a housing that supports the damper holding portion via an elastic piece. An elastic member having a base attached to the body, a door lock mechanism for holding a closed door,
The distance between the center of rotation of the support member and the engaging portion between the support member and the damper increases as the opening angle of the door increases.

A door which covers one side of the housing so as to be freely opened and closed;
A support member attached to both lower sides of the door and rotatably supporting the door with respect to the housing; a damper engaging with the support member and applying a braking force to the door in accordance with the rotation of the door; An elastic member having a damper holding portion for holding the damper, a base portion attached to the housing, supporting the damper holding portion via an elastic piece, and a door lock mechanism for holding a closed door; The configuration is such that the distance between the center of rotation of the damper, the support member, and the engaging portion of the damper decreases as the opening angle increases.

The support member and the damper are engaged by a gear mechanism. Further, a tooth profile formed at an engagement portion of the support member with the damper is configured to mesh with a gear attached to the damper. Further, the tooth profile provided on the elliptical curved surface of the support member is configured to mesh with the gear mounted on the damper. Further, the elliptical gear attached to the damper is configured to mesh with a tooth profile provided on a curved surface formed in an arc shape of the support member. The damper holding portion has an opening holding portion for holding an outer peripheral surface of the damper, and a plurality of holding claws provided on the opening holding portion for holding a side surface of the damper.

The elastic member has a free end that is pressed and displaced by a pressing member provided on the door when the door is closed, and applies a displacement repulsive force to the door. Also,
The elastic member has a pair of locking claws provided on both ends of the base inserted into a pair of locking portions provided on the housing. Also,
The door lock mechanism includes a door locking piece formed of an elastic material supported by the housing and having a protruding portion at a tip, and an opening recess formed on the support member and engaging with the door locking piece when the door is closed. Have.

Also, a concave portion formed on the major axis of the elliptical gear, a rotation locking portion which engages with the concave portion to regulate the position of the elliptical gear, and a free end of the elastic member. A locking claw formed, and a locking portion on which the locking claw is hooked, a positioning member supported by the housing, an elastic member provided on the inner surface of the door when the door is closed. A pressing member is provided for abutting and displacing the free end portion, and the locking claw is hooked to the hook portion in a state where the rotation locking portion of the positioning piece is engaged with the concave portion of the elliptical gear, and the elliptical gear is rotated. After regulating the position, the door is assembled to the housing, and when the door is closed, the elastic member is displaced by the pressing member to release the locking state of the locking claw and the locking portion, and the rotation locking portion and the ellipse The engagement of the concave portion of the gear having the shape is released.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described with reference to the drawings showing the embodiments. Embodiment 1 FIG. 1 is a partially cutaway side view showing a configuration of a door device according to a first embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is an exploded perspective view showing an elastic member and a damper holding structure, FIG. FIG. 5 is an explanatory diagram of the operation. In the drawing, reference numeral 1 denotes a housing, 2 denotes a door, and 3 denotes a floating latch device which constitutes a lock mechanism of the door 2. The floating latch 3a locks the locking piece 3b when the door 2 is closed, and unlocks the locking piece 3b when the door 2 is pushed in again. .

A pair of hinges 4 are fixed to both sides of the lower end of the door 2, and the hinge 4 has a shaft hole 4a formed in a horizontal direction.
And an elliptical tooth surface 4d formed on the peripheral surface of the hinge 4. The elliptical tooth surface 4d has a distance from the shaft hole 4a to a position at which it meshes with a gear 7 described later. It is formed in a curved surface that increases as the size increases.

Reference numeral 10 denotes an elastic member having a damper holding portion 10a, and a base 10b provided at one end thereof is attached to an elastic member attaching portion 11 provided in the housing 1. As shown in FIG. 3, the elastic member 10 includes a base 10b, an elastic piece 10c following the base 10b, an opening holding section 10d for holding the outer peripheral surface of the damper 6, and an opening holding section 10d.
d, the damper holding portion 10a having a plurality of holding claws 10e for holding the side surface of the damper 6, and a free end portion 10f provided following the damper holding portion 10a.
0a is expanded in the direction of arrow A, and the damper 6 is pushed in the direction of arrow B, thereby holding the damper 6 supporting the gear 7 and bending the base 10b as indicated by the dashed line, thereby forming the base 10b.
The pair of locking claws 10g provided at the upper and lower ends of the elastic member mounting portion 11 are inserted into the concave portions constituting the pair of locking portions 11a provided on the elastic member mounting portion 11 and latched, thereby being attached to the housing 1. The damper holding portion 10a may be configured separately from the elastic member 10 and attached to the elastic member 10, and the damper 6 may be attached to the damper holding portion 10a.

Reference numeral 12 denotes a shaft-shaped pressing member planted on the inner surface of the door 2. When the door 2 is closed and locked by the floating latch device 3, the elastic member 10 passes through a through hole 13 provided in the housing 1. When the free end 10f and the elastic piece 10c are displaced by contacting with the free end 10f of the above, and the lock of the floating latch device 3 is released, the door 2 moves to the position shown in FIG. It is configured to open.

In the door device constructed as described above, when the upper end of the door 2 is pushed in to release the lock of the floating latch device 3, the door 2 is moved by the elastic force of the elastic member 10 as shown in FIG.
Open to the position shown by the solid line in the middle, and then
, The moment force M about the rotating shaft 8 and the gear 7
The opening speed of the door 2 is regulated by the magnitude relationship with the rotation suppressing moment force F due to the rotation resistance force T of the damper 6 applied to the elliptical tooth profile 4d of the hinge 4 through the opening 4.

The own weight W of the door 2 in the first embodiment
Is applied to the door 2 by the elastic member 10.
In the state shown in FIG. 4 in which the door 2 has been pushed out, the horizontal distance from the rotation axis to the center of gravity G is L2, and FIG.
Assuming that the horizontal distance in the state shown in FIG.
−L2), but the rotation suppressing moment force F by the damper 6 when the door 2 is pushed out.
Is F = T (radius L5 of elliptical tooth profile 4d) / (gear 7
L7), and immediately before the door 2 is completely opened, F =
T (L6 / L7), and since L5 <L6, the rotation suppressing moment force F gradually increases. Therefore, the opening speed of the door 2 due to its own weight W can be maintained at a constant speed by forming the curved surface of the elliptical tooth profile surface 4d so as to increase in accordance with the increase in the moment force M.

In the first embodiment, the tooth surface of the hinge 4 is formed in an elliptical shape. However, if the hinge 4 is formed in a curved surface capable of obtaining a desired speed change, the opening speed of the door 2 can be set to a desired speed pattern. it can.

Embodiment 2 FIG. FIG. 6 is a partially cutaway side view showing a configuration of a door device according to a second embodiment of the present invention.
Is an exploded perspective view of the door lock device 3 according to the first embodiment.
And the other configuration is used in place of the floating latch device.
In the drawing, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts, respectively, 2a is a knob attached to the upper end inside the door 2, and 14 is a door latch formed following the base 10b of the elastic member 10. One end is provided with a protruding portion 14a that protrudes in the lateral direction at its tip. Reference numeral 4e denotes an opening recess formed in the lower side of the hinge 4 in parallel with the shaft hole 4a.

In the second embodiment, when the door 2 is closed, the door locking piece 14 is pushed by the lower side of the hinge 4 and elastically displaces, and the projection 14a engages with the opening recess 4e to lock the door 2. I do. Further, when the door 2 is opened, the hinge 4 is moved, the projection 14a is separated from the inside of the opening recess 4e, and the lock is released.

In the second embodiment, the door locking piece 14 is formed following the base 10b of the elastic member 10, but may be formed separately.

According to the second embodiment, the first embodiment
Floating latch device 3 provided in the above, pressing member 1 provided in the door
2. Since the through hole 13 and the free end 10f of the elastic member 10 can be omitted when provided in the housing 1, the number of parts is reduced, and the cost can be reduced.

Embodiment 3 FIG. 8 is a partially cutaway side view showing a configuration of a door device according to Embodiment 3 of the present invention.
FIG. 10 is an exploded perspective view, FIG. 10 is a partially cutaway side view showing a state at the time of opening the door according to the third embodiment, and FIG. is there.

In the drawing, the same reference numerals as those in FIG. 1 denote the same or corresponding parts, respectively, 15 denotes an elliptical gear fixed to a damper 6, 15a denotes a concave portion provided on the long axis thereof, and 16 denotes an assembly. And a rotation locking portion 16 provided at one end of a second elastic piece 16a following the base 10a of the elastic member 10.
b and a hook 1 extending in the direction of the back of the door 2
6c is provided. Reference numeral 10h denotes a locking claw provided on the free end 10f of the elastic member 10.

Next, a procedure for assembling the door 2 to the housing 1 in the third embodiment will be described. First, with the rotation locking portion 16b inserted into the concave portion 15a of the elliptical gear 15, the locking claw 10h is engaged with the locking portion 1 as shown by a broken line in FIG.
6c, whereby the position of the elliptical gear 15 is regulated. Next, the door 2 is attached to the housing 1 by inserting the shaft hole 4 a of the hinge 4 into the shaft 8 of the housing 1. Thereby, the major axis of the elliptical gear 15 is the arc-shaped tooth surface 4 of the hinge 4.
b. Next, when the door 2 is closed, the pressing member 13 pushes the free end portion 10f and displaces as shown by the solid line in FIG. 8, and the engagement between the locking portion 16c and the locking claw 10h is released. As shown, the elastic force of the elastic member 10 causes the elliptical gear 15 to move and mesh with the arcuate tooth profile surface 4b, and the rotation locking portion 16b is detached from the recess 15a, so that the elliptical gear 15 becomes free to rotate.

When the door 2 assembled in this manner is opened, the elliptical gear 15 rotates with the opening of the door 2 to reduce the distance from the rotation axis to the meshing position. As shown, the elliptical gear 15 is engaged with the arcuate tooth profile surface 4b of the hinge 4 on the short axis.

The own weight W of the door 2 in the third embodiment
Is applied to the door 2 by the elastic member 10.
Assuming that the horizontal distance from the rotation axis to the center of gravity G in the state shown in FIG. 10 where L is pushed out is L2, and the horizontal distance in the state shown in FIG.
Although it gradually increases by (L3-L2), the rotation suppressing moment force F by the damper 6 when the door 2 is pushed out in the state shown in FIG. 10 is F = T (radius L4 of the arc-shaped tooth profile surface 4b) / ( The major axis radius of the elliptical gear 7 is L9), and immediately before the door 2 is completely opened, F = T (L4) / (elliptical gear 7).
, L10 <L9, and the rotation suppressing moment force F gradually increases by T (L10−L9). Therefore, the opening speed of the door 2 due to its own weight W can be maintained at a constant speed by forming the shape of the elliptical gear 15d into a shape in which the rotation suppressing moment force F increases in response to the increase in the moment force M. .

In the third embodiment, the toothed surface of the hinge 4 is formed in an arc shape, and the gear rotatably supported by the damper 6 is the elliptical gear 15, but the elliptical gear 15 is formed in a shape capable of obtaining a desired speed change. When the gears are formed, the opening speed of the door 2 can be set to a desired speed pattern.

In the third embodiment, the positioning member 16 is formed following the base 10b of the elastic member 10. However, the positioning member 16 may be formed separately.

[0032]

Since the present invention is configured as described above, it has the following effects.

According to the present invention, the shape of the toothed surface formed on the peripheral surface of the hinge provided on the door is changed so that the center of rotation of the support member and the engagement between the support member and the damper as the opening angle of the door increases. The braking force F by the damper is increased as the opening angle of the door is increased so that the distance between the doors is increased or the distance between the center of rotation of the damper and the engaging portion between the support member and the damper is reduced. Is increased, the speed at which the door opens under its own weight can be set to a desired speed pattern, and a high-quality, high-quality door device can be obtained.

Further, a damper holding portion having an opening holding portion for holding the outer peripheral surface of the damper following the elastic piece of the elastic member and a plurality of holding claws formed on the opening holding portion for holding the side surface of the damper is provided. Since the damper is formed, the damper can be held by the elastic member by expanding the damper holding part and pushing in the damper, thereby reducing the number of parts such as screws, improving the assembly workability, and reducing the cost. Can be.

Further, when the door is closed, the elastic member is displaced via the pressing member provided on the inner surface of the door, and the displacement repulsive force is applied to the door, so that the number of parts such as springs is reduced. As a result, the assembly workability can be improved and the cost can be reduced.

Also, a pair of locking claws are provided at both ends of the base of the elastic member, and the base is bent and inserted into a pair of locking portions provided on the housing to be attached. The number of parts can be reduced to improve the assembly workability and the cost. In addition, assembling and disassembling can be performed from the outside of the housing, the serviceability can be improved.

Further, the door locking mechanism has a door locking piece formed of an elastic material whose base has a protrusion protruding in the lateral direction at the front end thereof, and a lower side of the hinge. When the door is closed, the door locking piece is pushed by the hinge and elastically displaces, and the projection engages with the opening recess to lock the door. And
When the door is opened, the hinge moves and the projection is released from the opening recess and unlocked, so the number of parts such as the floating latch and its mounting screw is reduced,
It is possible to improve the assembly workability and reduce the cost.

Further, an elliptical gear which is rotatably supported by the damper and receives the rotational braking force of the damper, and an arc-shaped tooth surface formed on an outer peripheral surface of a hinge meshing with the elliptical gear are provided. When closed, the long axis side of the elliptical gear meshes with the arcuate tooth profile of the hinge, so the speed at which the door opens under its own weight can be controlled to a desired speed, ensuring a sense of quality and texture. .

A concave portion formed on the long axis of the elliptical gear, a locking claw formed at a free end of the elastic member,
A positioning member that has a rotation locking portion that engages with the concave portion of the elliptical gear and regulates the position of the elliptical gear and a locking portion where the locking claw is latched, and is supported by the housing; In the state where the rotation locking portion of the positioning piece is engaged with the concave portion of the elliptical gear, the locking claw is hooked on the locking portion to regulate the position of the elliptical gear, and then the door is attached to the housing. When the door is closed, the elastic member is displaced by the pressing member provided on the door to release the state in which the locking claw is hooked on the locking portion, and the rotation locking portion is engaged with the concave portion of the elliptical gear. , So that the meshing position of the elliptical gear and the arcuate tooth profile provided on the hinge can be easily set to the correct meshing position, thereby improving assembly workability and reducing costs. Can be.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a door device according to Embodiment 1 of the present invention.

FIG. 2 is an exploded perspective view of the door device according to the first embodiment.

FIG. 3 is an exploded perspective view showing an elastic member and a damper holding structure according to the first embodiment.

FIG. 4 is a partially cutaway side view showing a state at the time of opening the door according to the first embodiment.

FIG. 5 is a partially cutaway side view showing a state at the end of opening the door according to the first embodiment.

FIG. 6 is a partially cutaway side view of a door device according to a second embodiment of the present invention.

FIG. 7 is an exploded perspective view of the door device according to the second embodiment.

FIG. 8 is a partially cutaway side view of a door device according to Embodiment 3 of the present invention.

FIG. 9 is an exploded perspective view of the third embodiment.

FIG. 10 is a partially broken side view showing an initial state of opening a door according to a third embodiment.

FIG. 11 is a partially cutaway side view showing a state at the end of door opening according to a third embodiment.

FIG. 12 is a partially cutaway side view showing a conventional door device.

FIG. 13 is an exploded perspective view of a conventional door device.

[Explanation of symbols]

Reference Signs List 1 housing, 2 door, 3 floating latch device, 3a floating latch, 3b locking piece, 4 hinge, 4a shaft hole, 4b
Arc-shaped tooth surface, 4d elliptical tooth surface, 4e opening concave portion, 6 damper, 7 gears, 8 axes, 10 elastic member,
10a damper holding portion, 10b base, 10c elastic piece, 10d opening holding portion, 10e holding claw, 10f free end portion, 10g locking claw, 10h locking claw, 11 elastic member mounting portion, 11a locking portion, 12 pressing member , 13
Through hole, 14 door locking piece, 15 oval gear, 15a recess, 16 positioning member, 16a second elastic piece, 16
b Rotation lock, 16c Hook.

Claims (11)

[Claims] A door that covers one surface of the housing so as to be openable and closable, a support member attached to both lower sides of the door and rotatably supporting the door with respect to the housing, and the door engaged with the support member and engaged with the door. An elastic member having a damper that applies a braking force to the door in accordance with the rotation of the damper, a damper holding portion that holds the damper, a base that supports the damper holding portion via an elastic piece, and is attached to the housing. A door lock mechanism for holding a closed door, wherein the distance between the center of rotation of the support member and the engaging portion between the support member and the damper increases as the opening angle of the door increases. A door device characterized by the following. 2. A door that covers one surface of a housing so as to be openable and closable, a support member attached to both lower sides of the door and rotatably supporting the door with respect to the housing, and the door engaged with the support member and engaged with the door. An elastic member having a damper that applies a braking force to the door in accordance with the rotation of the damper, a damper holding portion that holds the damper, a base that supports the damper holding portion via an elastic piece, and is attached to the housing. A door lock mechanism for holding a closed door, wherein the distance between the center of rotation of the damper and the engaging portion between the support member and the damper decreases as the opening angle of the door increases. A door device characterized by the above-mentioned. 3. The door device according to claim 1, wherein the support member and the damper are engaged by a gear mechanism. 4. The gear according to claim 1, wherein a tooth profile formed at an engaging portion of the support member with the damper is configured to mesh with a gear attached to the damper.
The door device as described. 5. The door device according to claim 1, wherein a tooth profile provided on an elliptical curved surface of the support member is configured to mesh with a gear mounted on the damper. 6. The elliptical gear attached to the damper is configured to mesh with a tooth formed on an arc-shaped curved surface of the support member. Door device. 7. The damper holding portion includes an opening holding portion for holding an outer peripheral surface of the damper, and a plurality of holding claws provided on the opening holding portion for holding a side surface of the damper. The door device according to any one of claims 1 to 6. 8. The door according to claim 1, wherein the elastic member has a free end which is pressed and displaced by a pressing member provided on the door when the door is closed, and applies a displacement repulsive force to the door. The door device according to claim 7. 9. The elastic member according to claim 1, wherein a pair of locking claws provided at both ends of the base are inserted into a pair of locking portions provided on the housing. 8. The door device according to claim 7. 10. A door locking mechanism, comprising: a door locking piece formed of an elastic material supported by a housing and having a projection at a tip thereof;
The door device according to claim 1, further comprising an opening recess formed in the support member and engaging with the door locking piece when the door is closed. 11. A concave portion formed on the major axis of the elliptical gear, a rotation engaging portion that engages with the concave portion to regulate the position of the elliptical gear, and a free end of the elastic member. A positioning member supported by the housing, the positioning member being provided on an inner surface of the door, the elasticity being provided when the door is closed. A pressing member that abuts on a free end of the member and displaces the locking member, and locks the locking claw on the locking portion in a state where the rotation locking portion of the positioning piece is engaged with the concave portion of the elliptical gear. After restricting the position of the elliptical gear, the door is assembled to the housing, and when the door is closed, the elastic member is displaced by the pressing member to lock the locking claw and the locking portion. At the same time as the rotation locking portion and the concave portion of the elliptical gear. 7. The door device according to claim 6, wherein the engagement is released.