JP5351595B2 - Cabinet stay and cabinet using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stay for cabinet, in which the rotating speed of a body-side stay arm relative to a body-side mounting part can be adjusted during rotation, and a cabinet. <P>SOLUTION: A first and second arm position moving plates 13 and 14 are housed in a dent part 12 of a casing-side stay arm 6, and a frictional resistance imparting plate 19 is interposed between a mounting seat 5 and the casing-side stay arm 6. The first and second arm position moving plates 13 and 14 include first and second protruding parts 23 and 24 opposed to each other respectively. The first protruding part 23 is driven onto the second protruding part 24 during rotation of the casing-side stay arm 6 to move the casing-side stay arm 6 in the direction of rotational axis P1, whereby the frictional resistance between the casing-side stay arm 6 and the frictional resistance imparting plate 19 is increased. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a cabinet stay attached across a cabinet housing and a door, and a cabinet using the same.

  Conventional cabinet stays are disclosed in Patent Documents 1 and 2. Since the stay disclosed in these documents uses a damper in which oil as a brake body is sealed, oil leakage must be surely prevented and attention is required for assembly. In addition, since oil flows in and out between the two chambers partitioned in the circumferential direction, it is difficult to increase the rotation angle of the stay arm (normally 160 ° or less), and the door is set to 180 ° or more, for example. It is difficult to use when you want to open it. Furthermore, the brake force of the oil may change due to a change in the surrounding temperature.

  In order to solve the above problems, the present applicant has also applied for an invention of the stay (see Patent Document 3). In the present invention, the clutch mechanism using the spiral body (torsion coil spring) and the friction resistance mechanism are provided, and the friction resistance can be reliably generated in the stay.

  However, the frictional resistance acting on the stay is always constant, and it is difficult to adjust during the door opening / closing process. Therefore, as the end of the door opening / closing operation approaches, the moment due to the weight of the door gradually increases, and in particular, a door with a heavy weight may generate vibration and noise when closed.

JP 2001-254565 A JP 2001-329745 A JP 2009-19478 A

  In the present invention, in view of the above-described circumstances, the rotation speed of the main body side stay arm with respect to the main body side mounting portion is easily adjusted during its rotation, and this is simple regardless of the size and weight of the door. It is an object to provide a cabinet stay and cabinet that can be realized by the configuration.

The present invention for solving the above problems is as follows.
A door-side mounting portion fixed to the cabinet door, a body-side mounting portion fixed to the cabinet main body, and a door-side turn arranged parallel to the door-side mounting portion and the body-side mounting portion. A pair of stay arms that are pivotally mounted around a dynamic axis and a body-side rotation axis, and that can be bent to close the door by bending at an intermediate position and open the door by extension; A cabinet stay,
Of the pair of stay arms, a friction resistance applying member that is interposed between the main body side stay arm and the main body side mounting section that is attached to the main body side mounting section, and that applies a friction resistance to the main body side stay arm; ,
The frictional resistance imparting member is arranged on the opposite side of the main body side rotation axis with respect to the main body side stay arm, and the main body side rotation arm of the main body side stay arm is rotated during rotation of the main body side stay arm. An arm position moving member that moves while changing the position in the direction continuously or intermittently along the circumferential direction of the main body side rotation axis,
By the arm position moving member moves directly pressed to the body side rotation axis direction body side stay arm in the middle of rotation, or the arm position moving member is secured to the body side stay arm body By means of a movement assisting member that rotates integrally with the side stay arm, the main body side stay arm that is being rotated is indirectly pressed and moved in the direction of the main body side rotation axis . The frictional resistance applied to the main body side stay arm can be increased or decreased.

  The cabinet stay according to the present invention is configured as described above, and a friction resistance imparting member that imparts friction resistance to the main body side stay arm, and the main body side stay arm is moved while the main body side stay arm rotates. And an arm position moving member that increases or decreases the frictional resistance applied to the main body side stay arm by the frictional resistance applying member. For this reason, during rotation of the main body side stay arm, the frictional resistance acting on the main body side stay arm increases or decreases according to the rotation angle. As a result, the door connected to the cabinet stay and opened and closed by the rotation of the main body side stay arm is heavy, and a frictional resistance is given to the door that tries to rotate rapidly by its own weight, and the door is loosened. It can be opened and closed quickly. That is, the rotation speed of the main body side stay arm is adjusted during its rotation. Only the arm position moving member is required for this purpose, and the configuration is simple. As a result, generation of vibration and noise when the door is opened and closed can be prevented, and for example, when the door is closed, “fingering” in which a user puts a finger between the door and the main body of the cabinet can be prevented.

The arm position moving member may directly press the main body side stay arm and move it in the main body side rotation axis direction . Also, moving the movable auxiliary member of the arm positions the movable member and the body side stay arm and another body secured to the body side stay arm, the movement assisting member is pressed by the body side stay arm and integrally with the arm position moving member that You may make it do.

On the end face where the arm position moving member and the main body side stay arm or the movement assisting member face each other in the main body side rotation axis direction, a convex portion is provided so that the rotation locus overlaps when the main body side stay arm rotates. Are formed to face each other on the main body side rotation axis direction,
By the body side stay arm or moved to the end surface is non-convex portion or rides on projections on with, one of the convex portion and the other to rotate around the main body rotation axis, said body side stay arm Can move in the direction of the main body side rotation axis.

In addition, the end face where the arm position moving member and the movement assisting member face each other in the main body side rotation axis direction has a convex portion on either side so that the rotation trajectory overlaps when the main body side stay arm rotates. However, the recesses are formed on the other side so as to face each other on the main body side rotation axis direction,
By the body side stay arm or ride on the end face is a non-recessed Dari in with, one of the convex portions do write enters the other recess to rotate around the main body rotation axis, said body side stay arm Can move in the direction of the main body side rotation axis.

That is, the protrusions provided on the end surfaces facing each other in the main body side rotation axis direction ride on each other, whereby the position of the main body side stay arm can be moved in the main body side rotation axis direction. Further, the convex portion provided on one of the end faces facing in the main body side rotation axis direction enters the concave portion provided on the other side, so that the position of the main body side stay arm can be moved in the main body side rotation axis direction. .

  The convex portion is formed to project from the end surface of the arm position moving member, and is provided in parallel with the end surface from the end surface of the ascending surface where the projecting amount from the end surface continuously increases in the circumferential direction. A flat surface; and a descending surface connected to the end surface with the protrusion amount continuously decreasing in the circumferential direction from the end portion of the flat surface.

  The recess is formed in a recess in the end surface of the arm position moving member, and is provided in parallel with the end surface from a descending surface in which the amount of immersion from the end surface increases continuously in the circumferential direction, and from the terminal portion of the descending surface. And an ascending surface that is continuously reduced in the circumferential direction from the end portion of the flat surface and is connected to the end surface.

  When the hollow portion that opens in the opposite direction to the side where the main body side mounting portion is located is formed at the end of the main body side stay arm on the main body side mounting portion side, the arm position movement is performed. A member can be accommodated in a hollow part. Thereby, the main body side stay arm can be made compact.

Furthermore, a coil-shaped spiral body that is engaged with the main body side stay arm and has one end in the circumferential direction that is locked to the main body side stay arm,
A cylindrical body that can accommodate the arm position moving member, and a case body that is inserted inside the spiral body and is rotatable together with the spiral body;
When the main body side stay arm rotates in any one direction which closes or opens the door, the spiral body is loosely fitted with the case body due to an increase in inner diameter thereof, and the main body side rotates. When the stay arm rotates in the other direction, the spiral body may be provided with a clutch mechanism that rotates integrally with the case body in a close-fitting state by reducing the inner diameter thereof. In this case, the rotation speed of the main body side stay arm can be further finely adjusted by the clutch mechanism.

  And the cabinet of this invention for solving the said subject is using the above-mentioned cabinet stay.

  This provides a cabinet in which the rotation speed of the main body side stay arm with respect to the main body side mounting portion is adjusted during its rotation, and that can be realized with a simple configuration regardless of the size and weight of the door. Can do.

In this cabinet, the door side rotation axis and the main body side rotation axis are arranged horizontally,
The frictional resistance imparting member imparts a frictional resistance in the opening / closing direction of the door to the main body side stay arm,
The arm position moving member increases or decreases the frictional resistance by moving the main body side stay arm in the main body side rotation axis direction in the middle of opening and closing of the door.

Further, the cabinet door is opened and closed by rotating in an arc shape with respect to the cabinet body,
The amount of movement of the main body side stay arm in the main body side rotation axis direction is preferably maximized at a position where the moment at the center of gravity of the door is maximum.

(A), (b) is a schematic diagram of the cabinet 4. FIG. It is a perspective view of the stay 101 of 1st Example of this invention. It is an exploded perspective view similarly. 4 is a side cross-sectional view of a housing side stay arm 6. FIG. It is sectional drawing of an exploded state similarly. It is also a front view. FIG. 4 is a perspective view of an arm position moving member 13 and a movement assisting member 14 . (A) is a top view of the arm position moving member 13, (b) is a X1-X1 line cross-sectional arrow view of (a). (A) is a top view of the movement auxiliary member 14, (b) is a sectional view taken along the line X2-X2 of (a). FIG. 3 is a front view of a stay 101 attached to the housing 1 of the cabinet 4. It is a figure which shows the state in the middle of opening and closing the door 2 of the cabinet 4. FIG. It is a figure which shows the state by which the door 2 of the cabinet 4 was fully opened. (A), (b) is operation | movement explanatory drawing of the arm position moving member 13 and the movement auxiliary member 14. FIG. It is sectional drawing of the state of (b) of FIG. (A) is a top view of the movement auxiliary member 36, (b) is a sectional view taken along the line X3-X3 of (a). (A) is a top view of the movement auxiliary member 39, (b) is a sectional view taken along line X4-X4 of (a). 4 is a side cross-sectional view of a housing side stay arm 43. FIG. It is side surface sectional drawing of the stay 102 of 2nd Example. It is sectional drawing of an exploded state similarly. It is also a front view.

  Hereinafter, embodiments of the present invention will be described in detail.

  1 is a perspective view of a stay 101 according to an embodiment of the present invention, FIG. 2 is an exploded perspective view, FIG. 3 is a side sectional view of a housing side stay arm 6, FIG. 4 is a sectional view in an exploded state, and FIG. It is a front view.

  In this specification, as shown in FIG. 1A, a casing 1 (main body) having an opening and a door 2 for closing the opening of the casing 1 are connected by a hinge 3. A case of the cabinet 4 (for example, a lighting bureau) to be performed will be described. The cabinet 4 includes, for example, a case in which the ceiling of a building is the casing 2 and the door 2 (canopy) for closing the opening is rotated in the vertical direction. The cabinet 1 and the door 2 of the cabinet 4 are connected by a cabinet stay 101 (hereinafter simply referred to as “stay”).

  As shown in FIG. 2, the stay 101 of the first embodiment includes a housing side stay arm 6 (main body side) fixed to the inner wall surface of the housing 1 of the cabinet 4 via a mounting seat 5 (main body side mounting portion). A stay arm) and a door side stay arm 8 fixed to the inner wall surface of the door 2 of the cabinet 4 via a bracket 7 (door side mounting portion). The housing-side stay arm 6 can be rotated around the rotation axis P1 of the mounting seat 5, and the door-side stay arm 8 is rotated by a bracket 7 provided in parallel with the rotation axis P1 of the mounting seat 5. It can be rotated around the movement axis P2. Further, the housing side stay arm 6 and the door side stay arm 8 are connected by a connecting pin 9 so as to be rotatable (bendable) around its axis (rotation axis P3).

First, the housing side stay arm 6 will be described. As shown in FIGS. 2 and 3, a cylindrical portion 11 is formed at one end portion in the longitudinal direction of the housing side stay arm 6 (the end portion on the side of the mounting seat 5). A recess 12 is formed in a stepped shape. The hollow portion 12 accommodates an arm position moving member 13 and a movement assisting member 14, which will be described in detail later . A groove 15 is formed at the other end in the longitudinal direction of the housing side stay arm 6. A cam portion 16 (described later) of the door side stay arm 8 is inserted into the groove portion 15. As shown in FIGS. 4 to 6, the bottom surface portion 12a of the recess portion 12 has a plurality (three in this embodiment at an angle of 120 degrees) at a constant angle in the circumferential direction. A pin hole 17 is provided. These pin holes 17 are for fixing the movement assisting member 14 to the housing side stay arm 6 so as not to rotate (described later).

  As shown in FIG. 1A, the housing side stay arm 6 is attached to an attachment seat 5 fixed to the inner wall surface of the housing 1 of the cabinet 4. The screw shaft 18 is inserted into the through hole 5 a of the mounting seat 5. The threaded portion of the screw shaft 18 is formed with a two-surface width portion 18a over the entire length (axial length). And the through-hole 5a of the attachment seat 5 is a similar shape a little larger than the cross-sectional shape of the two-surface width part 18a. For this reason, the screw shaft 18 is inserted into the mounting seat 5 in a non-rotating state.

  A frictional resistance imparting plate 19 (frictional resistance imparting member) is interposed between the mounting seat 5 and the housing side stay arm 6. The frictional resistance imparting plate 19 is a disc made of a polymer material such as rubber or resin, for example, and its end surface comes into contact with the mounting seat 5 and the housing side stay arm 6 over the entire surface, thereby imparting frictional resistance thereto. . The magnitude of the frictional resistance at this time varies depending on the rotation angle of the housing side stay arm 6 (described later). Thereby, the rotational speed of the housing side stay arm 6 is adjusted.

The arm position moving member 13 and the movement assisting member 14 will be described with reference to FIGS. 7 is a perspective view of the arm position moving member 13 and the movement assisting member 14 , FIG. 8A is a plan view of the arm position moving member 13, and FIG. 7B is a sectional view taken along line X1-X1 in FIG. 9A is a plan view of the movement assisting member 14, and FIG. 9B is a cross-sectional view taken along the line X2-X2 of FIG. The arm position moving member 13 and the movement assisting member 14 have a disk shape, and are arranged so that their end faces (first end face 21 and second end face 22) face each other and overlap each other.

A through hole 13 a having a similar shape slightly larger than the cross-sectional shape of the two-surface width portion 18 a of the screw shaft 18 is provided in a portion of the axis (rotation axis P 1) of the arm position moving member 13. For this reason, the arm position moving member 13 is connected to the screw shaft 18 in a non-rotating state. The first end surface 21 of the arm position moving member 13 is provided with a plurality of first protrusions 23 (three in 120 degrees in the present embodiment) at a certain angle in the circumferential direction. . Each first convex portion 23 has a fan-like shape in plan view, is formed to protrude from the first end surface 21, rises from the first end surface 21 with a gently inclined surface, and the first end surface from the end portion of the ascending surface 23a. 21 is provided with a flat surface 23b formed in parallel with 21 and a descending surface 23c that descends from the terminal portion of the flat surface 23b with a gentle inclined surface and is connected to the first end surface 22. The up surface 23a and the down surface 23c are formed symmetrically with respect to the rotation axis P1.

Next, the movement auxiliary member 14 will be described. Since the configuration of the movement assisting member 14 is substantially the same as that of the arm position moving member 13, only different parts will be described. The through hole 14 a of the movement assisting member 14 has a circular shape that is slightly larger than the outer diameter of the threaded portion of the screw shaft 18. For this reason, the movement assisting member 14 rotates independently of the screw shaft 18. In other words, it idles with respect to the screw shaft 18. Also in the movement assisting member 14, a plurality of second convex portions 24 (three at 120 degrees in this embodiment) are provided on the second end surface 22 at a constant angle in the circumferential direction. Each of the second convex portions 24 has a fan shape in plan view, and the circumference thereof is slightly longer than the circumference of the first convex portion 23. Further, the rotation locus R2 of the second protrusion 24 substantially matches the rotation locus R1 of the first protrusion 23 of the arm position moving member 13 (see FIGS. 8 and 9).

Three stopper pins 25 project from the surface of the movement assisting member 14 opposite to the second end surface 22 at a constant angle in the circumferential direction. Each stopper pin 25 is inserted into a pin hole 17 provided in the recess 12 of the housing side stay arm 6. As a result, the movement assisting member 14 is integrally attached to the housing-side stay arm 6, rotates integrally with the housing-side stay arm 6 , and moves integrally in the direction of the main body-side rotation axis P1 . On the other hand, the arm position moving member 13 presses the bottom surface portion 12a of the hollow portion 12 of the housing side stay arm 6 via the movement assisting member 14 to move the housing side stay arm 6 in the direction of the main body side rotation axis P1. Specifically, when the housing side stay arm 6 rotates around the main body side rotation axis P <b> 1, the first convex portion 23 (convex portion) of the arm position moving member 13 is the second convex portion 24 of the movement assisting member 14. The position of the housing side stay arm 6 moves in the direction of the main body side rotation axis P1 by riding on the (convex portion) or moving to the second end face 22 (non-convex portion).

As shown in FIGS. 4 and 5, the arm position moving member 13 and the movement assisting member 14 are accommodated in the recessed portion 12 of the housing side stay arm 6 in an overlapping state. Then, the tip end portion (screw portion) of the screw shaft 18 protrudes from the through hole 13 a of the arm position moving member 13. A hexagonal nut 27 is screwed into the projecting thread portion via a washer 26 and tightened. Arm position the moving member 13 and the moving auxiliary member 14, the first protrusion 23 is in close contact with the second end surface 22 of the movable auxiliary member 14 of the arm position moving member 13, the flat surfaces of the second convex portion 24 of the movable auxiliary member 14 24 b is disposed in close contact with the first end face 21 of the arm position moving member 13 .

When the arm position moving member 13 and the movement assisting member 14 are accommodated in the recess 12 of the housing side stay arm 6, the cap 28 is attached to the opening of the recess 12. As described above, since the arm position moving member 13 and the movement assisting member 14 are accommodated in the recessed portion 12 of the housing side stay arm 6, the housing side stay arm 6 can be made compact.

  Next, the door side stay arm 8 will be described. As shown in FIGS. 2 and 3, one end portion in the longitudinal direction of the door side stay arm 8 (the end portion on the side close to the housing side stay arm 6) has an arc shape, and the cam portion 16 is formed in the portion. Is formed. Further, a frame support 29 and a compression spring 31 are inserted into the groove 15 provided at the other end of the housing side stay arm 6. A disc-shaped frame 32 is inserted into the forked portion provided on the frame support 29. The top 32 is rotatably attached to the top support 29 by a support pin 33. The cam portion 16 of the door-side stay arm 8 is in a state where the compression spring 31 is pressed in the axial direction (longitudinal direction of the housing-side stay arm 6) via the frame support 29, and the housing-side stay arm 6 is connected by the connecting pin 9. And are pivotally connected. At this time, the top 32 is pressed against the cam portion 16 of the door side stay arm 8 by the elastic restoring force of the compression spring 31. That is, the housing-side stay arm 6 and the door-side stay arm 8 rotate (bend) in a form that bends about the rotation axis P <b> 3 while receiving the pressing force by which the top 32 presses the cam portion 16.

  The other end of the door-side stay arm 8 (the end far from the housing-side stay arm 6) is connected to the bracket 3 by a connecting pin 34. The door-side stay arm 8 is rotatable about the axis line (rotation axis P2) of the connecting pin 34.

  The operation of the stay 101 of the first embodiment will be described. As shown in FIG. 10, a mounting seat 5 is fixed to the inner wall surface of the housing 1 of the cabinet 4, and a housing-side stay arm 6 is attached to the mounting seat 5. A bracket 3 is fixed, and a door side stay arm 8 is attached to the bracket 3. The housing 1 and the door 2 are connected so as to be openable and closable by, for example, a hinge 3. When the door 2 is closed, the stay 101 is arranged in a state where the housing-side stay arm 6 and the door-side stay arm 8 are bent at the portion of the axis (rotation axis P2) of the connecting pin 9. The door 2 in the closed state presses the opening of the housing 1 by the action of the cam portion 16 of the door side stay arm 8 and the compression spring 31. For this reason, even if some external force acts on the door 2, there is little possibility that the door 2 will be opened.

  As shown in FIG. 11, when the door 2 is opened, the housing side stay arm 6 rotates with respect to the mounting seat 5 in the clockwise direction (the direction of the arrow Q1) about the rotation axis P1. At the same time, the door-side stay arm 8 rotates counterclockwise with respect to the bracket 3 about the rotation axis P3. The door 2 temporarily stops in a state where the housing side stay arm 6 is rotated by an angle θ1 by the action of the cam portion 16 of the door side stay arm 8.

Here, as shown in FIG. 4, the arm position moving member 13 is coupled to the screw shaft 18 in a non-rotating state. The screw shaft 18 is attached to the attachment seat 5 in a non-rotating state. For this reason, even if the housing side stay arm 6 rotates, the arm position moving member 13 is held in an immobile state. The movement assisting member 14 is fixed to the recess 12 of the housing side stay arm 6 and rotates integrally with the housing side stay arm 6. As a result, when the housing side stay arm 6 rotates, slip occurs between the arm position moving member 13 and the movement assisting member 14 . When the housing-side stay arm 6 rotates in the direction of the arrow Q1 by a predetermined angle θ1 (in the present embodiment, θ1 is about 45 degrees), the second convex portion 24 of the movement assisting member 14 also rotates in the same direction. The arm position moving member 13 is disposed close to the first convex portion 23. The second convex portion 24 in this state is indicated by a two-dot chain line in FIG.

As shown in FIG. 12, the housing-side stay arm 6 further rotates in the direction of the arrow Q1. As shown in FIG. 13B, the second convex portion 24 of the movement assisting member 14 further rotates in the same direction and rides on the first convex portion 23 of the arm position moving member 13. Since the first and second convex portions 23, 24 are provided with gently inclined surfaces (upward surfaces 23a, 24a) at both ends in the circumferential direction, the second convex portion 24 is smoothly formed on the first convex portion 23. Get on.

As shown in FIG. 12 and FIG. 13B, when the housing side stay arm 6 rotates in the direction of the arrow Q1 by a predetermined angle θ2 (in the present embodiment, θ2 is about 90 degrees), the movement assisting member The 14 second convex portions 24 ride on the first convex portion 23 of the arm position moving member 13 and both are arranged in an overlapping state. At this time, since the flat surfaces 23b and 24b of the first and second convex portions 23 and 24 are arranged in contact with each other, the housing-side stay arm 6 is held in a stable state (a state that is difficult to rotate). . And the housing | casing 1 and the door 2 will be in a straight line state, and will stop.

The first convex portion 23 of the arm position the moving member 13, by riding up the second convex portion 24 of the movable auxiliary member 14 (i.e., housing-side stay arm 6 is moved to the main body rotation axis direction P1), the arms The overlapping thickness t2 (see FIG. 14) of the position moving member 13 and the movement assisting member 14 is larger than the overlapping thickness t1 (see FIG. 4) before riding (t2> t1). Due to the increase in thickness (t2-t1) at this time, the frictional resistance imparting plate 19 interposed between the mounting seat 5 and the housing side stay arm 6 is pressed in the axial direction (direction of the rotation axis P1). Is done. As a result, the frictional resistance between the mounting seat 5 and the housing side stay arm 6 increases. That is, by rotating the housing side stay arm 6, the frictional resistance acting between the mounting seat 5 and the housing side stay arm 6 can be automatically adjusted.

As shown in FIG. 11, as the door 2 is opened, the center of gravity G of the door 2 gradually moves away from the rotation axis P <b> 1 of the housing side stay arm 6, so the moment M acting on the center of gravity G of the door 2 is Gradually grows. However, since the first convex portion 23 of the arm position moving member 13 rides on the second convex portion 24 of the movement assisting member 14, the frictional resistance acting between the housing side stay arm 6 and the frictional resistance imparting plate 19 is also increased. . In other words, the frictional resistance acting between the housing side stay arm 6 and the frictional resistance imparting plate 19 cancels out the increase in the moment M of the door 2. Thereby, the effect that the door 2 is prevented from being rapidly opened by the moment M is produced. In FIG. 1A, a region K1 is a region where the frictional resistance acting on the frictional resistance imparting plate 19 is small and the door 2 is opened and closed at high speed. And the area | region K2 is an area | region where the frictional resistance which acts on the frictional resistance provision board 19 is large, and the door 2 is opened and closed at a slow speed.

The door 2 is closed by the reverse operation of the above process. That is, when the housing-side stay arm 6 is rotated in the direction opposite to the arrow Q1, the first and second protrusions 23 and 24 of the arm position moving member 13 and the movement assisting member 14 ride on each other in the region K1. Is resolved. For this reason, the frictional resistance acting between the housing side stay arm 6 and the frictional resistance imparting plate 19 is also reduced, and the door 2 can be closed with a small torque.

  As a result, since the door 2 is slow in the region K2, the user can accurately open and close the door. In addition, at the end of the opening operation, it is possible to reduce the possibility of vibration or finger jamming. Further, at the end of the closing operation of the door 2, it is possible to reduce a possibility that noise is generated due to the door colliding with the housing 1 at a rapid speed.

Next, referring to FIG. 8 and FIG. 15, the arm position moving member 35 and the movement assisting member 36 of another embodiment are different from the arm position moving member 13 and the movement assisting member 14 of the stay 101 of the first embodiment. Will be described. Arm position the moving member 35 in another embodiment, Ri same der and arm position moving member 13 described above has a convex portion 23 having the same structure (see FIG. 8). Further, in the movement assisting member 36 of another embodiment, the aforementioned movement assisting member 14 has a plurality of second convex portions 24, whereas, as shown in FIG. In this embodiment, a plurality of recesses 37 (three in this embodiment at 120 degrees) are provided. Each of the recesses 37 is formed as a depression in the second end surface 38 (end surface) , and is connected to the second end surface 38 by a gentle surface 37a. When casing side stay arm 6 is rotated, the protrusions 23 of the arm position moving member 35 entered the recesses 37 of the mobile auxiliary member 36 (see FIG. 8), rides on the second end face 38. As a result, the housing side stay arm 6 moves in the direction of the main body side rotation axis P <b> 1, the frictional resistance applying member 19 is pressed in the direction of the rotation axis P <b> 1, and frictional resistance acts on the housing side stay arm 6.

Furthermore, the 1st and 2nd convex parts 23 and 24 formed in the arm position moving member 13 and the movement auxiliary member 14 may be in the form of continuous protrusions instead of the form of intermittent convex parts. For example, in the movement assisting member 39 shown in FIG. 16, protrusions 41 that are continuous in the circumferential direction are provided on the same circumference in the second end surface 42. The ridge 41 includes an ascending surface 41a that rises with a gently inclined surface, and a flat surface 41b that is formed in parallel with the second end surface 42 from the terminal portion of the ascending surface 41a. Then, a plurality of ascending surfaces 41a and flat surfaces 41b are provided at a constant angle in the circumferential direction (in this embodiment, three at 120 degrees).

In the case-side stay arm 6 of the above-described embodiment, the arm position moving member 13 and the movement assisting member 14 are provided separately from the case-side stay arm 6. However, the movement assisting member 14 may be formed integrally with the housing side stay arm 6 to constitute a single arm position moving member 13 . That is, in the case of the housing side stay arm 43 shown in FIG. 17, the first convex portion 23 (convex portion) of the arm position moving member 13 directly on the inner bottom surface (that is, end surface) 12 a ′ of the bottom surface portion 12 a of the recess portion 12. The 2nd convex part 44 (convex part) pressed automatically is provided. Even in the case of the case-side stay arm 43, the same effect as that of the case-side stay arm 6 described above can be obtained. In addition, there is an advantage that the number of parts is reduced as compared with the above-described case-side stay arm 6.

Next, the stay 102 of the second embodiment will be described. The stay 102 of the second embodiment is obtained by adding a clutch mechanism 200 to the stay 101 of the first embodiment. 18 is a side sectional view of the stay 102 of the second embodiment, FIG. 19 is a sectional view of the exploded state, and FIG. 20 is a front view of the same. The clutch mechanism 200 will be described. As shown in FIGS. 18 to 20, the clutch mechanism 200 is housed in the hollow portion 12 of the cylindrical portion 11 in the housing side stay arm 6. The clutch mechanism 200 includes a torsion coil spring 45 and a case body 46. The case body 46 is made of, for example, a metal material and has a stepped cylindrical shape in which a large diameter portion 46a is provided at one end portion in the axial direction. The inner diameter of the case body 46 is slightly larger than the outer diameters of the arm position moving member 13 and the movement assisting member 14 . For this reason, when the case body 46 is accommodated in the hollow portion 12 of the housing side stay arm 6, the end surface portion on the large diameter portion 46 a side of the case body 46 contacts the bottom surface portion 12 a of the hollow portion 12. The large-diameter portion 46a is provided with a plurality of cutout portions 46b (eight at 45 degrees in the present embodiment) at a constant angle in the circumferential direction.

  A locking groove 47 is provided on the inner peripheral surface of the recess 12 of the housing side stay arm 6 along the direction of the rotation axis P1. The locking groove 47 is for hooking the arm portion 45a of the torsion coil spring 45 (spiral body) to make the torsion coil spring 45 unrotatable. In addition, a plurality from the lower end portion of the inner peripheral surface of the hollow portion 12 (peripheral portion of the bottom surface portion 12a) at a constant angle in the circumferential direction (in the present embodiment, eight at an angle of 45 degrees). ) Protrusions 47 are provided. When the case body 46 is accommodated in the recessed portion 12 of the housing-side stay arm 6, the notches 46 b provided in the large-diameter portion 46 a of the case body 46 fit into the protrusions 47. As a result, the case body 46 is disposed in a state of being prevented from rotating with respect to the housing side stay arm 6.

  A torsion coil spring 45 is attached to the case body 46 accommodated in the recess 12 of the housing side stay arm 6. The inner diameter of the torsion coil spring 45 is slightly smaller than the outer diameter of the case body 46. For this reason, the torsion coil spring 45 is elastically mounted in a state in which the inner diameter is expanded and the outer peripheral surface of the case body 46 is closely fitted. The torsion coil spring 45 presses the outer peripheral surface of the case body 46 in the radial direction. The end portion of the torsion coil spring 45 is bent so as to protrude in the radial direction from its outer peripheral surface, and an arm portion 45a is formed at the bent portion. The case body 46 on which the torsion coil spring 45 is mounted is accommodated in the recess 12 of the housing side stay arm 6. At this time, the arm portion 45 a of the torsion coil spring 45 is fitted and locked in the locking groove 47 of the hollow portion 12 of the housing side stay arm 6. As a result, the torsion coil spring 45 is also disposed on the housing side stay arm 6 in a non-rotating state.

  Next, the operation of the clutch mechanism 200 will be described. As shown in FIG. 20, when the housing side stay arm 6 is rotated in the counterclockwise direction (the direction of the arrow Q2), the inner diameter of the torsion coil spring 45 is enlarged, It becomes a loose fit state. As a result, the torsion coil spring 45 tends to be separated from the outer peripheral surface of the case body 46. Then, the pressing force acting on the case body 46 of the torsion coil spring 45 (friction resistance between the inner peripheral surface of the torsion coil spring 45 and the outer peripheral surface of the case body 46) decreases. In addition, the rotation of the case body 46 is suppressed by the projection 47 of the recess 12 of the housing side stay arm 6. As a result, the torsion coil spring 45 slides on the outer peripheral surface of the case body 46 integrally with the housing side stay arm 6, and the housing side stay arm 6 is rotated in the direction of the arrow Q2 with a relatively small torque. .

  However, if the housing-side stay arm 6 is rotated in the clockwise direction (the direction of the arrow Q1), the torsion coil spring 45 tries to tighten the outer peripheral surface of the case body 46 more firmly, and the case body 46 is tightened. It tries to rotate in the direction of arrow Q1. In other words, the inner diameter of the torsion coil spring 45 is reduced, and the outer peripheral surface of the case body 46 is tightly fitted. However, the case body 46 is attached to the housing side stay arm 6 so as not to rotate. For this reason, the housing-side stay arm 6 receives a large resistance when rotated in the direction of the arrow Q1 due to a large frictional resistance acting between the torsion coil spring 45 and the outer peripheral surface of the case body 46. As a result, a large force is required to rotate the housing side stay arm 6 in the direction of the arrow Q1.

  That is, when the housing side stay arm 6 is rotated in the counterclockwise direction (the direction of the arrow Q2), the torsion coil spring 45 is rotated away from the case body 46 (low torque), and the housing side stay 6 is rotated. When the arm 6 is rotated in the clockwise direction (the direction of the arrow Q1), the torsion coil spring 45 is rotated so as to press the case body 46 (high torque). This means a clutch action in which the torsion coil spring 45 and the case body 46 are connected or disconnected depending on the rotation direction of the housing-side stay arm 6.

  As described above, by applying the clutch mechanism 200, a large torque is required to rotate the housing side stay arm 6 in one direction (in this case, the direction of the arrow Q1), and in the other direction (in this case, When rotating in the direction of the arrow Q2, a small torque can be used. Thereby, it can prevent that the door 2 is a heavy article and is opened and closed rapidly by the dead weight.

  In the stay 102 of the second embodiment, when the casing side stay arm 6 is rotated in the counterclockwise direction (the direction of the arrow Q2) by reversing the winding direction or the mounting direction of the torsion coil spring 45, A large torque can be applied to the housing side stay arm 6. That is, in the cabinet 4 described above, the torque when the door 2 is opened can be reduced, and the torque when the door 2 can be closed can be increased.

  In the cabinet 4 to which the stays 101 and 102 of the first and second embodiments are attached, the rotation fulcrum of the door 2 is provided at the lower end as shown in FIG. As the door is opened, an opening is formed above the door 2. However, as shown in FIG. 1B, the pivot fulcrum of the door 2 may be provided at the upper end, and an opening may be formed below the door 2 as the door 2 is opened. In the cabinets 4 of the first and second embodiments, the rotation axis P1 of the housing side stay arm 6 is provided horizontally, but it may be provided vertically or obliquely. Further, the cabinet 4 may be arranged in any direction (direction of opening).

In the door 2, the size of the region K1 that is opened and closed at high speed and the size of the region K2 that is opened and closed slowly is changed by changing the lengths of the convex portions 23 and 24 of the arm position moving member 13 and the movement assisting member 14 . It can be adjusted. Moreover, it is also possible to reverse the areas K1 and K2 by changing the timing of the protrusions 23 and 24 of the arm position moving member 13 and the movement assisting member 14 .

  The stays 101 and 102 according to the present embodiment can be used not only for the door 2 of the cabinet 4 but also for a top bag of a building, a lighting bureau, and the like.

  The cabinet stay according to the present invention can be used as a member for guiding opening and closing of a door with respect to a cabinet housing such as a lighting bureau.

101,102 stay (cabinet stay)
1 Housing (main body)
2 Door 4 Cabinet 5 Mounting seat (Body side mounting part)
6,43 Housing side stay arm (Main body side stay arm)
7 Bracket (door side mounting part)
8 Door side stay arm (stay arm)
13, 35 Arm position moving members 14, 36, 39 Movement assisting member 19 Friction resistance imparting plate (friction resistance imparting member)
21 First end face (end face)
22, 38, 42 Second end face (end face)
23 1st convex part (convex part)
24, 44 Second convex part (convex part)
37 recess
41 ridges
12a 'inner bottom (end face)
P1 rotation axis (main body side rotation axis)
P2 rotation axis (door-side rotation axis)
R1, R2 rotation trajectory

Claims (5)

A door-side mounting portion fixed to the cabinet door, a body-side mounting portion fixed to the cabinet main body, and a door-side turn arranged parallel to the door-side mounting portion and the body-side mounting portion. A pair of stay arms that are pivotally mounted around a dynamic axis and a body-side rotation axis, and that can be bent to close the door by bending at an intermediate position and open the door by extension; A cabinet stay,
Of the pair of stay arms, a friction resistance applying member that is interposed between the main body side stay arm and the main body side mounting section that is attached to the main body side mounting section, and that applies a friction resistance to the main body side stay arm; ,
The frictional resistance imparting member is arranged on the opposite side of the main body side rotation axis with respect to the main body side stay arm, and the main body side rotation arm of the main body side stay arm is rotated during rotation of the main body side stay arm. An arm position moving member that moves while changing the position in the direction continuously or intermittently along the circumferential direction of the main body side rotation axis,
By the arm position moving member moves directly pressed to the body side rotation axis direction body side stay arm in the middle of rotation, or the arm position moving member is secured to the body side stay arm body By means of a movement assisting member that rotates integrally with the side stay arm, the main body side stay arm that is being rotated is indirectly pressed and moved in the direction of the main body side rotation axis . A cabinet stay characterized in that the frictional resistance applied to the main body side stay arm can be increased or decreased. On the end face where the arm position moving member and the main body side stay arm or the movement assisting member face each other in the main body side rotation axis direction, a convex portion is provided so that the rotation locus overlaps when the main body side stay arm rotates. Are formed to face each other on the main body side rotation axis direction,
By the body side stay arm or moved to the end surface is non-convex portion or rides on projections on with, one of the convex portion and the other to rotate around the main body rotation axis, said body side stay arm 2. The cabinet stay according to claim 1 , wherein the position moves in the direction of the main body side rotation axis. On the end face where the arm position moving member and the movement assisting member face each other in the main body side rotation axis direction, a convex portion is formed on either one so that the rotation trajectory overlaps when the main body side stay arm rotates. On the other side, the recesses are respectively formed facing the main body side rotation axis direction,
By the body side stay arm or ride on the end face is a non-recessed Dari in with, one of the convex portions do write enters the other recess to rotate around the main body rotation axis, said body side stay arm 2. The cabinet stay according to claim 1 , wherein the position moves in the direction of the main body side rotation axis. A cabinet using the cabinet stay according to any one of claims 1 to 3 . The door side rotation axis and the main body side rotation axis are arranged horizontally,
The frictional resistance imparting member imparts a frictional resistance in the opening / closing direction of the door to the main body side stay arm,
5. The cabinet according to claim 4 , wherein the arm position moving member increases or decreases the frictional resistance by moving the main body side stay arm in the main body side rotation axis in the middle of opening and closing of the door. .

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