JP2001115720A - Stay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stay capable of easily rotating a door from an open position to a closed-position side. SOLUTION: When a door D is turned from an open position to a releasing position, rotation in the direction of the arrow X of the first arm 13 is prevented by a retaining plate 11b. A connecting fitting 18 is fixed onto the door D, and a guide hole section 19 composed of the first hole section 19A and the second hole section 19b is formed in the connecting fitting 18. A shaft 17 is installed at the front end section of the second arm 15, and the shaft 17 is inserted into the guide hole section 19 rotatably and movably. When the door D is turned from the open position to the releasing position, the second arm 15 is revolved by an angle β in the opposite direction of the arrow Y, and the shaft 17 reaches the communicating section 19a of the first and second hole sections 19A, 19B. The second arm 15 is rotated by an angle γ in the direction of the arrow Y until the shaft 17 reaches from the communicating section 19a to the front end section 19c of the second hole section 19B by the urging force of the second urging means 30. β>γ is set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stay for holding a door for opening and closing an opening of a frame in an open position.

[0002]

2. Description of the Related Art Generally, a stay of this type has a pair of first and second arms whose one ends are rotatably connected to each other, and the other end of each of the first and second arms. Is rotatably connected to a frame and a door that opens and closes an opening of the frame. The first and second arms are generally in the shape of a "<", and when the door is opened and rotated, the angle between them becomes larger. And when the door reaches the open position,
The angle between them becomes a large angle near 180 °, and the first and second arms are substantially aligned.

The first and second arms are rotationally urged by first and second urging means so that an angle between them is increased. The pivoting force is not strong enough to pivot the door from the closed position to the open position, but the door is closed and pivoted at the open position where the first and second arms are substantially aligned. Large enough to prevent the door from closing, and stably hold the door in the closed position.

[0004]

When the door is turned from the open position to the closed position, the first arm and the second arm are substantially aligned, so that the door is not pressed with a large force. Cannot be closed and rotated against the urging forces of the first and second urging means. However, if a large force is applied to the door, the first and second arms, their connecting portions, and the like will be overwhelmed, causing them to fail. In addition, if the urging force of the first and second urging means is weakened, the door can be closed and rotated from the open position with a small force, but in such a case, the holding of the door in the open position becomes unstable. turn into.

[0005]

Means for Solving the Problems One end of each other is rotatably connected so as to form a "U" shape as a whole, and each other end has a frame and a door for opening and closing the opening of the frame. First and second arms respectively rotatably connected to the first arm and first and second urging means for urging the first and second arms to rotate so as to increase the angle between the first and second arms. In the stay for holding the door at a predetermined open position, when the door is further opened and rotated from the open position, the first arm rotates between the frame and the first arm. Locking means for preventing rotation following movement; providing a shaft portion at one of the door and the distal end of the second arm as a center of rotation of both; Is formed rotatably, and a guide groove to be movably inserted,
The guide groove includes a first groove portion and a second groove portion having one end communicating with each other, and the first and second urging means are provided when the door is pivotally opened from a closed position to an open position. When the shaft portion is positioned at the other end in the longitudinal direction of the first groove portion by the urging force of the first groove portion, and the door is further opened and rotated from the open position to a predetermined release position, the second arm rotates the first arm. The groove is rotated by the groove against the urging force of the second urging means, whereby the shaft is moved to one end of the first and second grooves communicating with each other. The first and second grooves are configured so that the shaft is moved to the other end of the second groove by rotating the arm by the second urging means;
The rotation angle of the second arm when the shaft moves from the other end to the one end of the first groove is determined when the shaft moves from one end to the other end of the second groove. The second of
It is characterized in that it is set to be larger than the rotation angle of the arm. In this case, when the door is closed and rotated from the release position beyond the lock position to a predetermined reset position, the first arm is rotated by the first urging means and the second arm is rotated. When the arm is displaced, the shaft is moved from the other end to the one end of the second groove, and then the second arm is rotated by the second urging means, whereby the shaft is moved. Is desirably moved to the other end of the first groove. The second biasing means is provided on a cam surface provided at a base end of the second arm, and is provided on the first arm so as to be movable and rotatable in a longitudinal direction thereof, and to rotate the cam surface. It is desirable to have a roll that moves, and an elastic member that presses the roll against the cam surface to urge the second arm to rotate. Forming a lock recess into which the roll enters when the door reaches the open position on the cam surface,
It is desirable that the lock concave portion and the roll constitute a lock means for restricting the rotation of the second arm in the open position. The rotation angle of the second arm when the shaft moves from the other end to the one end of the first groove,
The second arm when the shaft moves from one end to the other end of the second groove is set to be larger than the rotation angle of the second arm necessary to cause the roll to slip out of the lock groove. Is desirably set to be smaller than the rotation angle of the second arm required to allow the roll that has exited from the lock groove to enter the lock groove.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In this embodiment, a stay 1 according to the present invention is used for an underfloor storage, and the stay 1 opens and closes a pair of side walls (frame) (not shown) of the underfloor storage and an upper end opening of the underfloor storage. Door D
(Only one stay 1 is shown). Of course, the stay 1 can also be used between a frame other than the underfloor storage and a door that opens and closes the opening.

On the side wall near the upper end opening of the underfloor storage,
The mounting plate 11 is fixed. At the upper end corner of the mounting plate 11, a long hole 11a is formed which is inclined downward from one corner of the underfloor storage toward the center. On the other hand, the one end portion of the door D, pivot axis D ₁ facing the horizontal direction is provided, the rotation shaft D ₁ long hole 11a
Is inserted so as to be rotatable and movable in the longitudinal direction of the elongated hole 11a. Thereby, when the door D is closed in the closed position shown in FIG. 1, the upper end opening of the underfloor storage is closed with almost no gap, and the door D passes through the open position shown in FIG. 3 without interfering with the side wall of the underfloor storage. 4 to open and rotate from the release position to the closed position. Door D cannot move to the frame,
And you may connect so that rotation is possible.

A box 12 extending in the left-right direction is fixed to the mounting plate 11. A base end of a first arm 13 is connected to one end of the box 12 (the right end in FIG. 1) via a horizontal shaft 14 so as to be rotatable in the vertical direction. The tip of the first arm 13 has a second arm 15
Are rotatably connected via a shaft 16 parallel to the shaft 14. At the tip of the second arm 15, a shaft 14,
An axis 17 parallel to 16 is provided. This axis 17
Guide hole (guide groove) of connection fitting 18 fixed to door D
The guide hole 19 is inserted rotatably and movably in the longitudinal direction of the guide hole 19. This allows
The distal end of the second arm 15 is connected to the door D so as to be relatively rotatable and relatively movable in the longitudinal direction of the guide hole 19.

Although the first and second arms 13 and 15 are always in the shape of a "U" as a whole, the first and second arms 13 and 15 are rotated following the rotation of the door D, so that the angle between them is equal to that of the door D. It changes according to the turning position of. In this case, when the door D is located at the closed position, the angle is acute as shown in FIG. 1, but becomes larger as the door D rotates. Then, as shown in FIG. 3, when the door D rotates to the open position, the angle formed by the first and second arms 13 and 15 becomes the largest. First this time, the angle of the second arm 13 and 15, a line connecting i.e. the shaft 14, when the angle between the line connecting the axes 16, 17 and theta _1, the angle theta ₁ is normally
The angle is set to about 170 ° to 175 °.

[0010] As shown in FIG.
First biasing means 20 is provided. The first urging means 20 is for urging the first arm 13 to rotate in the direction of arrow X in FIG. 6 (the same direction as the opening rotation direction of the door D).
The box 12 has a slider 21 movably provided in the left-right direction. The slider 21 is provided with a first arm 13 by a pair of coil springs (elastic members) 22.
Biased to the side. One end of a link 23 is rotatably connected to the slider 21 via a shaft 24, and the other end of the link 23 is rotatably connected to the base end of the first arm 13 via a shaft 25. Are linked. As a result, the coil spring 22 constantly urges the first arm 13 in the arrow X direction.

As shown in FIGS. 6 and 7, between the first arm 13 and the second arm 15, a second urging means 30 is provided. The second biasing means 30 is for rotatingly biasing the second arm 15 in the direction of arrow Y, and has a support rod 31 provided on the first arm 13 so as to be movable in the longitudinal direction. ing. The support rod 31 is urged toward the second arm 15 by a coil spring (elastic member) 32. Also, the second arm 1 of the support rod 31
A roll support 33 is provided at the end on the fifth side.
The roll 34 is rotatably provided on the roll support 33. On the other hand, a cam surface 15 a is formed at the base end of the second arm 15. On this cam surface 15a,
The roll 34 is pressed by the coil spring 32. Thus, the second arm 15 is urged to rotate in the arrow Y direction. When the second arm 15 rotates, the roll 34 rolls on the cam surface 15a, so that the second arm 15 can rotate smoothly.

A lock recess 15b is formed on the cam surface 15a. When the door D is turned to the open position, the roll 34 is locked by the lock recess 15b.
It is arranged to enter. The lock recess 40 restricts the rotation of the second arm 15 at the open position by the lock recess 15b and the roll 34.

In the above-described configuration, when the door D is rotated to the closed position, the shaft 17 is connected to a first guide hole 19, which will be described later.
The first and second urging means 20 and 30 urge the door D toward the open position via the first and second arms 13 and 15, abutting against the end 19 a of the groove 19 </ b> A. However, since the own weight of the door D is larger than the urging forces of the first and second urging means 20, 30, the door D continues to be in the closed position.

On the other hand, when the door D is turned to the open position,
The door D is almost vertical and the first and second arms 1
Since the angle theta ₁ of 3, 15 is in a large angle close to 180 °, first the rotational force to the closed position side by the own weight of the door D, from the turn biasing force of the second biasing means 20 and 30 small. Therefore, the door D should be further rotated in the opening direction from the open position, but in the open position, the roll 34 enters the lock concave portion 15b, thereby preventing the rotation of the second arm 15 by the second urging means. Accordingly, the rotation of the first arm 13 by the first urging means 20 is prevented. As a result, the door D is held at the open position.

As described above, in this embodiment, the first,
In addition to the urging force of the second urging means, the door D is held in the open position by making the roll 34 enter the lock recess 15b, but the roll 34 does not necessarily need to enter the lock recess 15b. For example, when the door D rotates against the other of the first and second arms 13 and 15 from the closed position to the open position, the second arm 15 is pushed by the second urging means 30 by an arrow. A locking portion such as a protrusion for preventing the rotation in the Y direction may be provided. In that case, the first and second urging means 2
The door D is held in the open position only by the urging force of 0, 30, but the angle between the first and second arms 13, 15 is 18 degrees.
Since the angle is a large angle close to 0 °, the door D can be stably held at the open position.

As described above, the fact that the door D can be stably held at the open position means that a large force must be applied when the door D is turned from the open position to the closed position. When a large force is applied to the door D in the closing direction, an excessive force acts on the stay 1 and the skeleton side. For example, as is clear from FIG. 7, the first arm 13 is formed by forming a thin plate material into a “U” shape, and the second arm 15 is a simple plate material. Therefore, the first and second arms 13 and 15 are relatively strong in tension but weak in compression. However, when the door D is to be closed and rotated, a compressive force acts on the first and second arms 13 and 15. Therefore, the first and second arms 13, 1
5 may be bent or damaged.

In order to prevent such inconveniences, the stay 1 employs the following structure. That is, at the upper end of the mounting plate 11, a locking plate portion (locking means) 11b is formed which projects horizontally toward the inside of the storage. As shown in FIG. 3, the locking plate 11b is arranged such that the first arm 13 abuts on the side surface when the door D is turned from the closed position to the open position. Therefore, even if the door D further opens and turns from the open position, the first arm 13 does not further turn in the arrow X direction.

The locking plate 11b may be arranged such that the door D abuts on the first arm 13 after the door D has been further rotated slightly from the open position to the open direction. In addition, the locking plate 11b
Instead of this, a projection is formed on the first arm 13 and this projection is abutted against the mounting plate 11 and other members on the skeleton side to prevent the first arm 13 from further rotating in the X direction. You may.

The guide hole 19 includes a first hole (first groove) 19A and a second hole (second groove) 19B. The first hole portion 19A and the second hole portion 19B have base ends (one ends) communicating with each other at a communication portion 19a, and respective front ends (other ends) 19b and 19c are connected to each other from the communication portion 19a. It extends in different directions.

As shown in FIG. 1, the first groove 19A extends substantially horizontally to the right from the communication portion 19a when the door D is located at the closed position, and as shown in FIG. When it is located at the position, it is arranged to extend substantially upward from the communication portion 19a. Moreover, when the door D is located between the closed position and the open position, the shaft 17 is moved by the urging forces of the first and second urging means 20 and 30 so that the tip portion 19b
It is arranged and formed so as to be pressed against.

As described above, while the door D is pivoted from the closed position to the open position, the shaft 17 is kept at the distal end portion 19b of the first hole portion 19A.
However, when the door D rotates from the open position to the release position, the first arm 13 is prevented from rotating in the direction of arrow X by the locking plate portion 11b. 2
The arm 15 moves in the direction of the arrow Y against the urging force of the second urging means 30.
It is rotated in the opposite direction. When the second arm 15 rotates in the same direction, the shaft 17 is accordingly moved to the distal end 19b.
Moves to the communication portion 19a side from. When the door D reaches the release position shown in FIG. 4, the rotating shaft 17 moves to the communication portion 19a.

On the other hand, as shown in FIG. 4, when the door D is located at the release position, the second groove portion 19B is formed so that the communication portion 19 substantially follows the turning direction of the tip of the second arm 15.
a extends obliquely upward to the right from a. Therefore, when the door D is rotated from the open position to the release position, and the shaft 17 is moved to the communication portion 19a, the second arm 15 is rotated in the arrow Y direction by the urging force of the second urging means 30, Axis 17
Moves into the second groove 19B from the communication portion 19a and moves until it abuts on the tip 19c. In other words,
The shaft 17 is moved from the communication portion 19a to the tip portion 19 of the second groove portion 19B.
The second arm 15 rotates in the arrow Y direction until the second arm 15 hits the position c.

[0023] Here, first, the angle of the second arm 13, 15 and theta _2, the shaft 17 from the communicating portion 19a of the second groove 19B tip 19c when the door D is positioned at the release position Until the second arm 15 hits the arrow Y
If the angle of rotation in the direction is α, θ ₂ + α <θ ₁ is set. As is obvious from the first when the door D is positioned at the release position, the angle theta ₂ of the second arm 13 and 15, first when the door D is positioned in the open position, the angle theta ₁ is less than the second arms 13, 15.
Therefore, when the door D is rotated from the release position to the closed position, the door D can be rotated toward the closed position with a smaller force than when the door D is rotated from the open position to the closed position.

The shaft 17 is connected to the tip 1 of the first groove 19A.
The second arm 15 moves while moving from 9b to the communication portion 19a.
Is the rotation angle of the second arm 15 required for the roll 34 to come out of the lock recess 15b, and β> γ, and β
−α> γ is set. Therefore, when the door D rotates from the open position to the release position, the second arm rotates in the direction opposite to the arrow Y direction, whereby the roll 34 escapes from the lock recess 15b. After that, even if the second arm 15 is rotated in the direction of the arrow Y by the urging force of the second urging means 30, the roll 34 is locked in the lock recess 15b.
Never re-enter. Therefore, the door D can be slightly turned to the closed position side.

When the door D is turned from the release position to the closed position side beyond the open position to a predetermined reset position shown in FIG. 5, the first and second arms 13 and 15 are accordingly moved to the first position. The upper surface of the second hole portion 19B is inclined substantially upward or upward from the distal end portion 19c toward the communication portion 19a by rotating the second urging means 20 and 30 against the second urging means 20 and 30, respectively. In this state, the first arm 13
The second arm 15 is rotated in the direction indicated by the arrow X by the urging force of the urging means 20, and the second arm 15 is moved substantially in parallel from the distal end portion 19c toward the communication portion 19a. Thereby, the shaft 17 is moved from the distal end portion 19c of the second groove portion 19B to the communication portion 19a. Then, when the shaft 17 reaches the communication portion 19a, the second arm 15 is rotated in the arrow Y direction by the urging force of the second urging means 30, and the shaft 17
Enters the first hole portion 19A from the communication portion 19a and moves until it comes into contact with the tip portion 19b. Thereafter, when the door D is closed and rotated to the closed position, the stay 1 returns to the state shown in FIG.

It should be noted that the present invention is not limited to the above embodiment, but can be changed as appropriate. For example, in the above embodiment, the second urging means 30 is constituted by the cam mechanism and the spring, but may be constituted in the same manner as the first urging means 20. May be configured similarly to the second urging means 30. Further, in the above embodiment, the connection fitting 18 having the guide hole 19 formed therein is used.
Is provided on the door D and the shaft 17 is provided on the second arm 15. However, the connecting bracket 18 may be provided on the second arm 15 and the shaft 17 may be provided on the door D.

[0027]

As described above, according to the present invention, not only can the door be stably held in the open position, but also the door can be easily turned from the open position to the closed position. The effect that it can be obtained is obtained.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention in a state where a door is turned to a closed position.

FIG. 2 is a view showing the same embodiment in a state where a door is turned between a closed position and an open position.

FIG. 3 is a view showing the same embodiment in a state where a door is turned to a closed position.

FIG. 4 is a view showing the same embodiment in a state where a door is turned to a release position.

FIG. 5 is a view showing the same embodiment in a state where a door is turned to a reset position.

FIG. 6 shows first and second arms and the first and second arms of the embodiment.
It is a figure showing a 2nd urging means.

FIG. 7 shows a second arm incorporated in the first arm of the embodiment.
7A is an exploded view showing the urging means, FIG. 7A is a plan view thereof, and FIG. 7B is a front view thereof.

[Explanation of symbols]

 D Door 1 Stay 11b Locking plate (locking means) 13 First arm 15 Second arm 15a Cam surface 15b Lock recess 19 Guide hole (guide groove) 19A First hole (first groove) 19B Second hole (Second groove) 19a Communication part (one end of first and second grooves) 19b Tip (the other end of first groove) 19c Tip (the other end of second groove) 20 First biasing means 30 Second biasing means 32 Coil spring (elastic member) 34 Roll

Claims (5)

[Claims] At least one end is rotatably connected to each other so as to form a "U" shape as a whole, and each other end is pivotally connected to a frame and a door for opening and closing an opening of the frame. First and second arms operatively connected to the first and second arms;
First and second biasing means for rotating and biasing the arms so that an angle between the arms increases, and a stay for holding the door at a predetermined open position; An intervening locking means is provided for preventing the first arm from rotating following the rotation of the door when the door further rotates from the open position. A shaft portion serving as a center of rotation of the two arms is provided at one of the tip portions of the two arms, and a guide groove is formed on the other side so that the shaft portion is rotatably and movably inserted; Is constituted by a first groove and a second groove having one end communicating with each other, and when the door pivots from the closed position to the open position, the urging force of the first and second urging means is applied. The shaft is positioned at the other end of the first groove in the longitudinal direction, and the door is opened. When the second arm is further opened and rotated from the position to the predetermined release position, the second arm is rotated by the first groove portion against the urging force of the second urging means, and the shaft portion is thereby moved. The first arm and the second groove are moved to one end communicating with each other, and then the second arm is moved to the second end.
The first and second grooves are configured such that the shaft is moved to the other end of the second groove by being rotated by the urging means, and the shaft is formed of the first groove. The rotation angle of the second arm when moving from the other end to the one end is determined by the second angle when the shaft moves from one end to the other end of the second groove.
A stay characterized by being set to be larger than the rotation angle of the arm. 2. When the door is closed and rotated from the release position beyond the lock position to a predetermined reset position, the first arm is rotated by the first urging means and the door is rotated. By the displacement of the second arm,
The shaft is moved from the other end to the one end of the second groove, and then the second arm is rotated by the second urging means. The stay according to claim 1, wherein the stay is moved to an end. 3. The second urging means is provided on a cam surface provided at a base end portion of the second arm, and on the first arm so as to be movable in the longitudinal direction and rotatable. The roll according to claim 1 or 2, further comprising: a roll that rolls the cam surface; and an elastic member that presses the roll against the cam surface to rotate and bias the second arm. Stay. 4. A lock recess into which the roll enters when the door reaches the open position is formed on the cam surface, and the lock recess and the roll restrict the rotation of the second arm in the open position. 4. The stay according to claim 3, wherein a locking means is provided. 5. The rotation angle of the second arm when the shaft moves from the other end to the one end of the first groove, the rotation angle of the second arm being necessary to cause the roll to escape from the lock groove. The rotation angle of the second arm when the shaft moves from one end to the other end of the second groove is set to be larger than the rotation angle of the two arms. The above-mentioned second necessary to enter the lock groove
5. The stay according to claim 4, wherein the angle is set smaller than the rotation angle of the arm.