JP2544302Y2 - Telescopic support arm - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The invention of this application relates to a telescopic support arm used for a casement window, an inspection port, and a door of various devices.

[Conventional technology]

Conventionally, various types of telescopic support arms have been devised. For example, there is a support arm having a telescopic structure by reciprocating a piston rod in a cylinder. Such a telescopic support arm is used by attaching one end to a door and attaching the other end to a door frame.

[Problems to be solved by the invention]

However, in the conventional telescopic support arm described above,
Since a hydraulic mechanism for reciprocating the piston rod in the cylinder is required, there has been a problem that it is large-scale and complicated, and the operating state is not good.

Moreover, in the conventional telescopic support arm, the door can only be stopped and placed at the position where the door is fully opened or the position where the opening width of the door is set in advance, and the door can be stopped and placed at any position. could not. Therefore, there is a problem that such a telescopic support arm is very inconvenient when it is desired to stop the door at a slightly opened position and to change the opening width of the door frequently. Was.

Furthermore, if the telescopic support arms are distorted and are attached to both sides of the door, one or both of the telescopic support arms cannot be completely extended, and the opening state of the door can be reduced. There was a problem that it became jumbled.

Therefore, the inventor of this application has been made to solve the problem of such a conventional telescopic support arm.

[Means for solving the problem]

A telescopic support arm according to the invention of claim 1 of the present application is a telescopic support arm in which an outer arm (1) and an inner arm (2) are slidably arranged, and a main body of the outer arm (1). The cross section of (1A) is formed in a substantially C shape, and one side is a bent portion (1c). At the rear end (1b) side of the outer arm (1), an edge of the bent portion (1c) is formed. A locking portion (3) is provided, and a contact body (8) is provided behind the locking portion (3) via a space (9), and a front end (2) of the inner arm (2) is provided.
a) A locking body (4) having a locking portion (4a) that is adjusted in angle by being in contact with the abutting body (8) on the side thereof and capable of being disengaged from the locking portion (3) is rotatable. It has been attached.

A telescopic support arm according to the invention of claim 2 is a telescopic support arm in which an outer arm (1) and an inner arm (2) are slidably arranged, and a main body of the outer arm (1). The cross section of (1A) is formed in a substantially C shape, and one side is a bent portion (1c). At the rear end (1b) side of the outer arm (1), an edge of the bent portion (1c) is formed. A locking portion (3) is provided, and a contact body (8) is provided behind the locking portion (3) via a space (9), and a front end (2) of the inner arm (2) is provided.
a) A locking body (4) having a locking portion (4a) that is adjusted in angle by being in contact with the abutting body (8) on the side thereof and capable of being disengaged from the locking portion (3) is rotatable. Attach, and press resiliently against the tooth (5a) of the rack (5) arranged along the longitudinal direction of the bent part (1c) of the outer arm (1) toward the rack (5). The hook (6a) of the stopper (6) attached to the front end (2a) side of the inner arm (2) is engaged with the inner arm (2).
And a push-back portion (14) for releasing the engagement between the teeth (5a) of the rack (5) and the claws (6a) of the stopper (6). (5) At the rear end, a restoring body (7) that restores the engagement between the teeth (5a) of the rack (5) and the claw (6a) of the stopper (6) to the outer arm (1). At the front end (1a).

The telescopic support arm according to the invention of claim 3 of the present application is the outer arm (1) according to claim 1 or 2.
The width of the space portion (9) in the longitudinal direction is wider than the rotation width of the locking body (4).

[Action]

The telescopic support arm according to the invention of the present application has the following effects due to the above means.

According to the present invention, in the direction in which the telescopic support arm extends, the locking member (4) of the inner arm (2) abuts on the abutment (8) of the outer arm (1) to adjust the angle. When the telescopic support arm is slightly reduced, the locking portion (4a) of the locking body (4) of the inner arm (2) is locked to the locking portion (3) of the outer arm (1). When the telescopic support arm is further extended from this state, the locking portion (4a) of the locking body (4) of the inner arm (2) and the locking portion (3) of the outer arm (1) are locked. The locking member (4) is released again and abuts on the contact body (8), and the locking part (4a) of the locking body (4) engages with the locking part (3) of the outer arm (1). The angle is adjusted to an angle that does not stop. Then, when the telescopic support arm is reduced from this state, the locking body (4)
The locking portion (4a) of the outer arm (1) rotates while hitting the end of the locking portion (3) of the outer arm (1), and is inserted into the outer arm (1).

The invention according to claim 2 has the same function as the invention according to claim 1 and has the teeth (5a) of the rack (5) and the pawls of the stopper (6) in the direction in which the telescopic support arm extends. The part (6a) can move intermittently in small increments. In the direction in which the telescopic support arm contracts, the teeth (5a) of the rack (5) and the claw (6a) of the stopper (6) remain engaged with each other, and the rack (5) is stopped by the stopper (6). Stopped by.
Furthermore, in the direction in which the telescopic support arm extends,
When the claw (6a) of the stopper (6) exceeds the tooth (5a) of the rack (5), the tooth (5
The engagement between the a) and the claw portion (6a) of the stopper (6) is released by the pushback portion (14). Further, when the telescopic support arm is most contracted, the tooth (5a) of the rack (5) and the claw (6a) of the stopper (6) are returned to the original meshed state by the restoration body (7). .

The invention according to claim 3 has the same operation as the invention according to claim 1 or 2, and has the inner arm (2).
Of the outer arm (1) until it comes into contact with the contact body (8) of the outer arm (1), the telescopic support arm is distorted and attached to both sides of the door. Also in this case, the telescopic support arm can be extended by the width that the locking members (4) on both sides move in the respective spaces (9).

〔Example〕

Hereinafter, the configuration of the telescopic support arm according to the invention of the present application will be described with reference to the drawings shown as one embodiment.

FIG. 1 is a perspective view of a telescopic support arm according to the invention of the present application, wherein an outer arm (1) and an inner arm (2).
Are slidably disposed, and at the longest support position of the telescopic support arm, a locking portion (3) of the outer arm (1) described later is provided with a locking body (4) of the inner arm (2). The state where the locking part (4a) is locked is shown.

The outer arm (1) includes a long metal main body (1A) having a substantially C-shaped cross section and a long metal plate (1B) for closing the opening side of the main body (1A). A rack (5) is formed in the bent portion (1c) on one side of the main body (1A) of the outer arm (1) along the longitudinal direction. The front end (1a) of the outer arm (1) has teeth (5a) of the rack (5) and a claw (6) of a stopper (6) attached to the front end (2a) of the inner arm (2) described later. A restoration body (7) for restoring the engagement with 6a) is provided. Also, outer arm (1)
On the rear end (1b) side, the locking portion (3) is provided, and an abutment (8) is provided behind the locking portion (3).
Further, on the rear end (1b) side of the outer arm (1), the locking body (4) of the inner arm (2) rotates between the locking part (3) and the contact body (8). A space (9) is formed.
In the space (9), the width of the outer arm (1) in the longitudinal direction may be the rotation width of the locking body (4), but may be wider than this rotation width.

The inner arm (2) is made of a long metal plate. On the front end (2a) side of the inner arm (2), a claw (6a) engaging with the tooth (5a) of the rack (5) as described above.
A stopper (6) having The stopper (6) has the claw portion (6a) at the tip and a locking portion (6b) on the rack (5) side. A substantially central portion of the stopper (6) is pivotally supported, and as shown in FIG. 4, the tooth (5a) of the rack (5) of the outer arm (1) is engaged with the claw (6a) of the stopper (6). ) Is intermittently moved, the spring (11) attached to the inner arm (2) obtains elasticity, and the claw (6) of the stopper (6) is obtained.
a) is pressed against the teeth (5a) of the rack (5) of the outer arm (1), and the stopper (6) is swingable toward the front end (2a) of the inner arm (2). Attached to. Further, the front end (2a) of the inner arm (2) is brought into contact with the contact body (8) of the outer arm (1) to adjust the angle, and is capable of engaging and disengaging with the locking portion (3). A locking body (4) having a stop (4a) is rotatably mounted.

The rear end of the rack (5) comes into contact with the locking portion (6b) of the stopper (6), and the claw portion of the stopper (6) engaged with the tooth portion (5a) of the rack (5). (6a)
Push back to release the engagement between the two.
4) is provided.

Next, the use state of the telescopic support arm according to the invention of the present application configured as described above will be described.

The telescopic support arm according to the invention of this application is used for one side (both sides if necessary) of the door (15) as shown in FIG. 2, for example, and the inner arm (2) of the telescopic support arm. Attach the rear end (2b) to one side of the door (15), and attach the front end (1a) of the outer arm (1) of the telescopic support arm to the support frame (16) of the door (15). In this figure, the door (1
At the position where 5) is fully opened (the longest support position of the telescopic support arm), the locking portion (3) of the outer arm (1)
FIG. 6 shows a state in which the locking portion (4a) of the locking body (4) of the inner arm (2) is locked (see FIG. 6).

First, when the telescopic support arm gradually extends from the contracted state (door closed state) as shown in FIG. 3, the teeth of the rack (5) as shown in FIG. (5a)
The claw (6a) of the stopper (6) moves intermittently in small increments, and the teeth (5a) of the rack (5) and the claw (6a) of the stopper (6) move in the direction in which the telescopic support arm contracts. 6a) remains engaged, and the rack (5) is stopped by the stopper (6), so that the door (15) can be stopped at any position and placed.

When the telescopic support arm is extended most, the claw portion (6a) of the stopper (6) exceeds the tooth portion (5a) of the rack (5) as shown in FIG. Stopper (6) engaged with the tooth (5a) of (5)
The claw portion (6a) is pushed back by the pushing back portion (14), and the engagement between the two is released. When the telescopic support arm is reduced most, the tooth (5a) of the rack (5) and the claw (6a) of the stopper (6) are pushed back by the restoring body (7) when the stopper (6) is pushed back. It is returned to the original meshed state (see FIG. 3).

On the other hand, as shown in FIG. 5, the locking body (4) of the inner arm (2) comes into contact with the contact body (8) of the outer arm (1), and the angle is adjusted. When the telescopic support arm is slightly reduced, as shown in FIG. 6, the locking portion (3) of the outer arm (1) is locked by the locking body (4) of the inner arm (2). The part (4a) is locked and can be stopped and placed at this position.

Next, when the telescopic support arm is slightly extended from this state, as shown in FIG. 7, the locking portion (4a) of the locking body (4) of the inner arm (2) and the outer arm (1). Is released from the locking portion (3), the locking body (4) comes into contact with the abutting body (8) again, and the locking portion (4a) of the locking body (4) is moved to the outer arm ( It turns to an angle that does not lock with the locking portion (3) of 1).

Then, when the telescopic support arm is reduced from this state, as shown in FIG. 8, the locking body (4) of the inner arm (2) becomes the locking portion (3) of the outer arm (1). ) It is further rotated against the end and inserted inside the outer arm (1).

[Effect of the invention]

The telescopic support arm according to the invention of the present application is configured as described above, and has the following effects.

According to the invention, an inner arm (2) is provided.
The engaging portion (4a) of the engaging body (4) and the engaging portion (3) of the outer arm (1) can be easily extended and contracted by the disengagement operation.
The operating condition is excellent.

Moreover, in the invention according to claim 2, the door can be stopped and set at an arbitrary position regardless of the position where the door is fully opened or the position where the opening width of the door is set in advance, so that the door can be slightly moved. If you want to stop at the open position,
This is very convenient for use where the opening width of the door is frequently changed.

Furthermore, according to the invention of claim 3, even when the door is distorted and attached to both sides of the door, the locking members (4) on both sides of the door have a width corresponding to the width of movement of each space (9). Since the telescopic support arm can be extended, the locking members (4) on both sides can be locked to the respective locking portions (3), and the door can be opened normally. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a telescopic support arm according to the invention of the present application. FIG. 2 is a perspective view showing an attached state of a telescopic support arm according to the present invention. FIG. 3 to FIG. 8 are explanatory views showing the use state of the telescopic support arm according to the invention of this application. (1) ... outer arm, (1b) ... rear end (2) ... inner arm, (2a) ... front end (3) ... locking part, (4) ... locking body (4a) ... locking part, (5) ) ... Rack (5a) ... Tooth, (6) ... Stopper (6a) ... Claw, (7) ... Recovery body (8) ... Contact body, (9) ... Space part (14) ... Push-back part

Claims (3)

(57) [Scope of request for utility model registration] 1. A telescopic support arm having an outer arm (1) and an inner arm (2) slidably arranged, wherein a cross section of a main body (1A) of the outer arm (1) is formed in a substantially C shape. One side is a bent part (1c), and the rear end (1b) of the outer arm (1)
On the side, a locking portion (3) is provided at the edge of the bent portion (1c), and a contact body (8) is provided behind the locking portion (3) via a space (9). A locking body having a locking part (4a) on the front end (2a) side of the inner arm (2) which is in contact with the abutting body (8) and whose angle is adjusted so as to be detachable from the locking part (3). (4) A telescopic support arm, wherein (4) is rotatably mounted. 2. A telescopic support arm in which an outer arm (1) and an inner arm (2) are slidably arranged, wherein a cross section of a main body (1A) of the outer arm (1) is formed in a substantially C shape. One side is a bent part (1c), and the rear end (1b) of the outer arm (1)
On the side, a locking portion (3) is provided at the edge of the bent portion (1c), and a contact body (8) is provided behind the locking portion (3) via a space (9). A locking body having a locking part (4a) on the front end (2a) side of the inner arm (2) which is in contact with the abutting body (8) and whose angle is adjusted so as to be detachable from the locking part (3). (4) is rotatably mounted, and further, the tooth (5a) of the rack (5) arranged along the longitudinal direction of the bent portion (1c) of the outer arm (1) faces the rack (5). The stopper (6), which is attached to the front end (2a) of the inner arm (2) so as to press it resiliently, engages with the claw (6a) of the stopper (6).
The push-back portion (14) of the rack (5) is attached to the front end (2a) of the rack (5). At the rear end, the teeth (5a) of the rack (5) and the stopper (6)
A telescoping support arm, wherein a restoring body (7) for restoring the engagement with the claw (6a) is provided at the front end (1a) of the outer arm (1). 3. The telescopic device according to claim 1, wherein the width of the space in the longitudinal direction of the outer arm is wider than the rotation width of the locking member. Universal support arm.