JPH0640829Y2 - Stay for opening / closing body - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a stay for a door (or a lid, the same applies hereinafter), and more specifically, when the door is completely opened, its open state is automatically fixed. The present invention relates to a door stay having a locking mechanism that can be used.

[Problems to be solved by conventional techniques and devices]

Generally, this type of stay has a first arm whose one end is rotatably attached to a door such as a building or a housing, and a second arm whose one end is rotatably attached to a main body having a door. , The other ends of the first arm and the second arm are rotatably connected to each other, and when the door is opened and closed, the first arm and the second arm are relatively bent and extended through the connecting parts. To do. When the stay is extended and the door is open, the stay may be inadvertently bent and the door may be closed without any artificial operation. Is provided with a locking mechanism for holding. A stay having such a locking mechanism is disclosed in, for example, Japanese Utility Model Publication No. 55-10532.

In the stay locking mechanism according to this known device, a locking member serving as a lock body is slidably engaged with the first arm attached to the door in the length direction in the vicinity of the front end of the first arm, and the first locking member is provided. While the spring is biased toward the tip of the arm, a receiving groove is provided at the tip of the second arm attached to the door frame, with which the projection of the engaging member engages.

According to this known device, the stay extends when the door is completely opened, and at the same time as the operation ends, the projection of the locking member automatically locks in the receiving groove of the second arm, and the first arm and the first arm Two
The relative bending motion with the arm can be prevented. However, in order to release the locking and close the door, the locking member must be operated in a direction opposite to the direction in which the door is closed, and thus the operation cannot be said to be easy. Moreover, a pair of two opposing protrusions of the locking member formed in a cross shape are protruded from the inside to the outside between the slots formed in the lengthwise direction of the first arm, and the two protrusions are operated. And a locking mechanism by locking a spring between one of a pair of other opposing projections of the locking member and a projection cut and raised from the first arm. Since the above-mentioned constituent members are assembled, the structure is relatively complicated and the assembling thereof requires labor.

An object of the present invention is to provide a stay that facilitates the unlocking operation by the locking mechanism, that is, the door closing operation, and simplifies the assembly of the locking mechanism.

[Means for Solving the Problems]

The present invention for solving the above problems includes a first arm and a second arm.
A distal end region of the first arm is rotatably connected, a spring is provided on the distal end region of the first arm so as to move forward and backward, and a locking member is provided, while a distal end of the second arm is detachable. It is assumed that the stay for the opening / closing body is provided with a stopper.

The present invention is based on the above premise, wherein the locking member is the first
The operation piece is formed so as to be fitted on the outer side of the arm, and the operation piece protruding to the central portion of the locking member and a pin are provided between both side walls of the locking member.

With the locking member fitted on the first arm, the pin can be slid forward and backward in the slots provided in the lengthwise direction of both side walls near the tip end region of the first arm, and can be slid on the locking portion. It is positioned so that it can be engaged and disengaged, and this locking member is biased toward the rear end of the first arm by the spring.

The locking of the locking portion with respect to the pin is released by sliding the locking member forwardly through the operation piece and against the bias of the spring toward the tip of the first arm. To be able to do so.

[Action]

According to the stay having the above configuration, the opening / closing body (for example, the door)
When the first arm and the second arm are opened, the first arm swivels in opposite directions, with the mounting portion for the door serving as a fulcrum, and the second arm pivoting the mounting portion for the main body (for example, door frame) as a fulcrum. At the same time as extending about the axis connecting the and, the locking portion of the second arm automatically locks the pin of the locking member.

When the operating piece is pressed in the distal direction of the first arm against the bias of the spring in order to close the open / closed body from the released state, the locking member slides in the same direction and the locking part of the locking part is moved. The lock on the pin is released. In this released state, the opening / closing body is closed by being pressed in the closing direction. At the time of this closing, the arm shown in the first figure pivots in the opposite directions with the mounting bracket for the door as a fulcrum, and the second arm pivots in the mounting part for the main body as a fulcrum to connect the first arm and the second arm. It will be folded around the axis.

〔Example〕

An embodiment of a stay according to the present invention will be described below with reference to the drawings.

1 to 4, the stay 1 is composed of a first arm 2, a second arm 3, and a locking member 4.

The first arm 2 is formed in a straight body in which both side walls 5 face each other substantially in parallel, and the side walls 5 are continuous at one side edge 7 except for the tip region 6a. Therefore, the first arm 2 The other area except the tip area 6a has a U-shaped cross section. A slot 8 for engaging the locking member 4 is provided in the vicinity of the tip region 6a of the first arm 2.
Are provided long along the length direction of the first arm 2. The second arm 3 is provided with a hook-shaped engaging portion 10 having an arc edge 9 at its tip and is slightly curved. The tip area 11 of the second arm 3
Is interposed between both side walls 5 of the front end region 66a of the first arm 2 so as to be able to move in and out of the both side regions 6a and 11a.
The first arm 2 and the second arm 3 are connected to each other by pivotally supporting a given portion of the above with the shaft 12.

The locking member 4 extends a pair of leg pieces 14 from both ends of a bridging portion 13 having a U-shaped cross section that conforms to the outer shape of the portion where the one side edge 7 of the first arm 2 is continuous. An operation piece 15 is provided on the top edge. The locking member 4 is fitted on the outside of the first arm 2 and is fixed to the front and rear ends of both leg pieces 14 by passing through the pins 16 and 17 through the slots 8 and fixing them to the first arm 2. It is movably attached. The pin 16 has a rotating bush 18 (hereinbelow, simply referred to as the pin 16 including the bush 18) fitted on the outer periphery thereof to reduce the sliding contact resistance of the locking portion 10 with respect to the circular arc edge 9. The pin 17 and a pin 19 provided between both side walls of the first arm 2 so as to be separated from the pin 17 in the rear direction.
The locking member 4 is biased toward the rear end 6a of the first arm 2 by hooking the coil spring 20 between and.

Attachment members 22 and 23 are rotatably attached to the rear end 6b of the first arm 2 and the rear end 21 of the second arm 3, respectively.

In FIG. 5, a usage example of the stay 1 is shown. As shown in this figure, the stay 1 includes the mounting members 22 and 23, the lid 24,
It is fixed and attached to the case body 25, respectively.

According to the stay 1 having the above-described structure, as shown in FIG. 3, the locking portion 10 of the second arm 3 is locked to the pin 16 of the locking member 4, that is, the chain line in FIG. As shown by, the lid 24 is opened and the stay 1 is extended.
To close 24, as shown in FIG. 4, the operating piece 15 is pressed to the left in the figure against the action of the spring 20, and the locking member 4 is slid in the same direction and locked. Unlock the pin 16 of the portion 10. While maintaining this released state, the lid 24 is pressed from the chain line shown in FIG. 5 to the solid line position to close it. In the process of this closing operation, the first position is set with the mounting member 22 as a fulcrum.
The arm 2 is clockwise and the second arm 3 is a mounting member.
Each of them turns counterclockwise about 23 as a fulcrum, and is folded around the shaft 12 as shown by a solid line in FIG.

In order to open the lid 24 from the closed state, the lid 24 is pulled up from the solid line position to the chain line position and opened. In the process of this opening operation, the first arm 2 counterclockwise with the mounting member 22 as a fulcrum, and The second arm 3 pivots clockwise around the mounting member 23 as a fulcrum, and extends about the shaft 12 as shown by a chain line in FIG. At the same time, as shown in FIG. 3, the locking portion 10 of the second arm 3 is connected to the pin 16 of the locking member 4.
Automatically locks.

(Effect of the Invention) According to the stay of the present invention having the above-described configuration and operation, when the opening / closing body is closed, the operating piece of the locking member is touched or pinched to open / close the locking member. Press in the direction of body closure. Therefore, as compared with the case where the locking member is pressed in the direction opposite to the closing direction of the opening / closing body (the direction opposite to the closing direction), the closing operation of the opening / closing body is easier. Moreover,
When the opening / closing body is relatively lightweight, the operator does not press the opening / closing body in the closing direction but closes the opening / closing body only by relatively strongly pressing the locking member toward the tip of the first arm. can do.

Also, in the state where the locking member is fitted on the outside of the first arm,
The locking mechanism member can be easily assembled by penetrating the locking member from the outside of the locking member and fixing the pin to be slidably inserted into the slot of the first arm.

[Brief description of drawings]

The drawings show an embodiment of the stay of the present invention. FIG. 1 is a side view of the stay in the extended state, FIG. 2 is a side view of the stay in the extended state, and FIG. It is sectional drawing of the front-end | tip area | region of a 1st and 2nd arm, The state figure which the locking part of a 2nd arm has locked with the pin of a locking member, FIG. 4 is the front-end | tip of a 1st and 2nd arm. FIG. 5 is a cross-sectional view of the area, and FIG. 5 is an operation explanatory view of the stay when the stay is attached to the housing and the lid thereof. 2: First arm, 3: Second arm 4: Locking member, 8: Slot 10: Locking part, 15: Operation piece 16: Pin

Claims (1)

[Scope of utility model registration request] 1. A first arm and a second arm are rotatably connected at a tip end region thereof, and a spring is provided on the tip end region of the first arm so as to be slidable forward and backward to provide a locking member. In the stay for an opening / closing body, wherein a disengageable locking portion is provided at the tip of the second arm, the locking member is formed in a shape to be fitted on the outside of the first arm, and the center of the locking member is formed. An operation piece projecting to the portion, and a pin between both side walls of the locking member, and with the locking member fitted on the first arm, the side wall of the side wall near the tip region of the first arm is provided. The pin is positioned in a slot provided in the length direction so that the pin can be slid forward and backward and can be engaged with and disengaged from the locking portion, and the locking member is biased by the spring toward the rear end of the first arm. The locking member is connected to the first member via the operation piece and against the spring bias. By advancing the sliding distally of over arm, the stay can be released the locking with respect to the pin of the locking portion.