JPH083298Y2 - Folding leg support bracket - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a supporting metal for a folding leg used for a table, a kotatsu or a gurney.

[0002]

2. Description of the Related Art Conventionally, a folding leg of a table or the like is foldably attached to a top plate or a curtain plate provided below the folding leg through a supporting metal fitting. In this case, the supporting metal fitting is mounted on the mounting base. Fixed to the top side or the curtain side,
A leg mounting member rotatably connected to the mounting base via a hinge pin is fixed to the folding leg side. As such a supporting metal for a folding leg, the applicant has already made it possible to support the folding leg on the top plate or the curtain plate with a simple structure and with sufficient strength, and the supporting metal is not conspicuous. It has been proposed to have an excellent configuration that is arranged as follows.

Here, a leg mounting member capable of rotating at least 90 degrees is connected to a mounting base via a hinge pin, and an engaging element elastically held toward the hinge pin side by a spring is provided on the leg mounting member side. Correspondingly, the mounting base side is provided with a locking portion having a guide surface and a lock surface for the engagement element. Therefore, unless an operating force for releasing the engagement with the cam surface acts on the engagement element against the spring,
It is possible to reliably engage and hold the engaging element with the locking portion. Further, in order to release the engagement, the engagement element is provided with an operation knob for operating against the spring.

[0004]

However, according to the above-mentioned conventional support fitting, the leg is locked when the leg is upright, but is not locked when the leg is folded up and is held by the elastic force of the spring. Only because
The legs suddenly stood up and was dangerous. Further, since the operating knob of the engaging element is provided at the position on the back side of the leg, a situation such as pinching a finger may occur during operation, which is not preferable in terms of operability and safety.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can be locked in both the standing state and the folded state of the legs, and the disengagement of the engaging element can be performed at a position that is relatively easy to operate. As described above, it is an object of the present invention to provide a folding leg support fitting that has an improved structure and is excellent in operation safety.

[0006]

Therefore, according to the present invention,
As clearly shown in the illustrated embodiment, a leg mounting member (3) which can be rotated at least 90 degrees is connected to the mounting base (1) via a hinge pin (2), and the leg mounting member (3) side Is equipped with an engaging element (4) that is elastically pressed toward the hinge pin (2) side by a spring (5), and correspondingly, for the engaging element (4) on the mounting base (1) side. Guide surface (7A) and lock surface (7
B, 7C), a supporting metal fitting for a folding leg equipped with a locking part (7), wherein the locking part (7) is engaged with the tip of the engaging element (4) when the engaging part (4) moves up and down. Division (4
C) the arc-shaped guide surface (7A) is guided and a notch is formed adjacently above and below the arc-shaped guide surface (7A), and the tip of the engagement element (4) is in a substantially vertical position and a substantially horizontal position. Lock surface (7B, 7C) with which the engaging portion (4C) is engaged
Are formed. Further, the leg mounting member (3) is formed with a bottomed cylindrical storage portion (3D) having an opening on the locking portion (7) side, and the engagement element (3D) is provided in the storage portion (3D). 4) is slidably inserted and the storage part (3
The spring (5) is interposed between the D) and the engaging element (4), and the side portion of the storage portion (3D) located on the side surface side in the folding direction of the leg has an operation portion (at the outer end). 6B), and an engagement releaser (6) having a cam (6C) abutting against a cam follow (4B) provided on the engagement member (4) at the inner end thereof is provided so as to be capable of forward and backward operation inward and outward. . Then, by pressing the operation portion (6B) of the disengagement element (6),
The cam follower (4B) is pushed by the cam (6C) so that the engaging element (4) is withdrawn from the lock surface (7B, 7C) of the locking portion (7) against the spring (5). I am configuring.

[0007]

Therefore, the operating portion (6B) of the disengagement element is
Since it is located on the side of the folding leg on the side in the folding direction, unlike the conventional case, the leg is locked in both the upright state and the folded state, and is always operated regardless of the folding operation of the leg. Placed in an easy condition.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments. In the support fitting according to the present invention, a leg mounting member 3 is connected to a mounting base 1 having a fixing screw insertion hole 1A via a hinge pin 2 so that the leg mounting member 3 can rotate at least 90 degrees. The leg mounting member 3 is
A shaft support portion 3C for the hinge pin 2 is integrally formed in a mounting seat 3B having a screw insertion hole 3A for fixing, and a bottomed cylindrical storage portion 3D is integrally formed in the mounting seat 3B. Is formed. An engagement element 4 that can move toward the hinge pin 2 is slidably fitted in the accommodation section 3D, and a spring accommodation section 4A having an opening in the engagement element 4 is formed.
By the action of the compression coil spring 5 interposed between the ceiling and the bottom of the storage section 3, the spring is elastically held toward the hinge pin 2.

Further, the leg attaching member 3 is equipped with an engagement releasing element 6 which is located on the side surface side in the folding direction and which advances and retracts. The disengager 6 has a body portion 6A that is slidably moved in and out of the storage portion 3, and an operation portion 6B projecting like a button at the outer end thereof. A cam 6C for guiding the roller-shaped cam follower 4B provided on the engaging element 4 is provided at the inner end. Engagement 4
Has a slit space 4D formed in the wall thereof and opening toward the disengager 6, and the cam follower 4B is provided in the slit space 4D. Due to such a configuration, by pressing the operation portion 6B of the disengagement element 6, the cam follower 4B moves along the cam 6C, resisting the spring 5, and engaging the engagement element 4B. Can be pushed back to the bottom side of the storage section 3.

On the other hand, a guide surface 7A and a lock surface 7B are provided on the side of the mounting base 1 corresponding to the engaging elements 4.
The locking portion 7 having 7C is integrally provided. The guide surface 7A is an arc surface of, for example, approximately 90 degrees with respect to the direction in which the engagement element 4 moves with respect to the hinge pin 2, and the lock surfaces 7B and 7C are engaged with the engagement element 4. It is formed at an angle of about 85 degrees with respect to the guide surface, for example, along an inclination angle corresponding to the inclination angle of the tip side surface of the joint portion 4C. In the above embodiment, reference numeral 6D is a retaining pin of the engagement releasing element 6, and 6E is a sliding groove formed on the body portion 6A of the engagement releasing element 6 for guiding the retaining pin 6D. is there.

As shown in FIG. 4 and FIG. 5, the supporting metal fitting having such a structure is screwed to the top plate 8 and the mounting seat 3B is screwed to the tip of the leg 9. Thus, the legs 9 can be foldably attached to the top plate 8. In the state shown in FIG.
Is in an upright state, and in this state, the engagement element 4 is in a state in which the engagement portion 4C is in contact with the lock surface 7B.
Is locked to. In this case, even if the leg 9 is bent in the direction of the arrow A, the engaging portion 4C hits the lock surface 7B and the locked state is maintained. Further, in the direction opposite to the arrow A, the head of the leg 9 hits the top plate 8, and the load of the top plate 8 can be directly supported without the support metal fitting.

To release the locked state, the head portion of the engagement releasing element 6, that is, the operating portion 6B is pressed from the side of the leg 9 in the direction of arrow B. By the pressing of the disengagement element 6, the cam follower 4B moves along the cam 6C, and the engagement element 4 is pushed back to the bottom side of the storage section 3 against the spring 5. In this way, when the engagement portion 4C is retracted from the position of the lock surface 7B and the engagement between the engagement element 4 and the locking portion 7 is released, the leg 9 is rotated about the hinge pin 2 as the center of rotation. It can be rotated in the direction of arrow A and folding is performed. In this case, in the process in which the tip of the engagement element 4 slides with respect to the guide surface 7A, even if the pressing of the operation portion 6B is released, the engagement element 4 is released.
Is only pressed against the guide surface 7A by the elastic force of the spring 5, and does not hinder the rotation operation. And the leg 9 is about 9
It rotates about 0 degree, and the tip of the engaging element 4 moves to the guide surface 7A.
When the corresponding locking surface 7C is exceeded, the engaging force of the spring 5 causes the engaging portion 4C to move the locking surface 7C again.
The leg 9 is engaged with C, whereby the folded state of the leg 9 with respect to the top plate 8 is maintained. As described above, in the present embodiment, the legs 9 are locked in both the upright state and the folded state, and the both locks are released by pressing the engagement releaser 6.

In the above embodiment, the mounting base 1 is attached to the top plate 8 of the support fitting, but it goes without saying that it may be attached to the curtain plate provided under the top plate.
In this case, the mounting base 1 is screwed to the inner side of the curtain plate, and the head of the leg body 9 can support the curtain plate with the leg body 9 standing upright. The relative position of each guide surface 7A and lock surfaces 7B and 7C of the locking portion 7 with respect to No.
It may be formed by changing the phase by about 90 degrees in the opposite direction.

[0014]

The present invention has been described in detail above, and when the leg is in the vertical standing state and the horizontal folding state, the engaging element (4) on the leg mounting member (3) side has the mounting base (1). It moves smoothly along the arcuate guide surface (7A) provided on the side locking portion (7), and then elastically engages with the lock surfaces (7B, 7C) that are notched adjacent to the upper and lower sides of the guide surface (7A) for safety. Fixed to. In order to release the vertical standing state and the horizontal folded state of the leg, by pressing the outer end operation portion (6B) of the engagement releaser (6) provided on the side surface side in the leg folding direction,
The cam follower (4B) of the engagement element (4) is pushed down against the spring (5) by the inner end cam (6C), and the engagement element (4) is locked to the lock surface (7) of the engagement portion (7). 7B, 7C), the legs are pivoted up and down after being retracted, so unlike the conventional case, there is no need to pack hands between the top plate and the legs during the folding operation of the legs.
Regardless of how the legs are folded, they are always placed in an easy-to-operate state. Therefore, as in the conventional case, it is possible to directly support the top plate with the legs with sufficient strength, and
There is an effect that the unlocking operation at the standing position and the folding position of the legs can be performed safely and easily. Further, a cam follower provided with the operating portion (6B) at the outer end and the engaging member (4) at the inner end, which is an operating mechanism for locking or releasing the leg from the vertical standing state to the horizontally folded state. The engagement releaser (6) having a cam (6C) that abuts against (4B) except the outer end operation part (6B) has a bottomed cylindrical storage part (3D) formed in the leg attachment member (3). Since it is stored inside and protected, it is easy to prevent dust from clogging and there is no malfunction.

[Brief description of drawings]

FIG. 1 is an overall front view showing an embodiment of the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a side view of the above embodiment.

FIG. 4 is a side view showing a usage state (leg standing) of the support fitting according to the present invention.

FIG. 5 is a side view showing another usage mode (folding of legs).

[Explanation of symbols]

 1 Mounting base 2 Hinge pin 3 Leg mounting member 4 Engager 4B Cam follow 5 Compression coil spring 6 Engagement disengager 6C Cam 7 Locking part 7A Guide surface 7B, 7C Lock surface

Claims (1)

[Scope of utility model registration request] 1. A hinge pin (2) on a mounting base (1).
Tandem at least 90 degrees rotation can leg attaching member (3) through and bullet pressure of <br/> toward the hinge pin (2) side by a spring (5) on the leg mounting member (3) side An engaging portion equipped with an engagement element (4) and correspondingly having a guide surface (7A) and a lock surface (7B, 7C) for the engagement element (4) on the mounting base (1) side. in the support bracket of the folding legs are equipped with (7), above
The engagement element (4) moves vertically in the locking portion (7).
Arc-shaped guide whose tip engaging part (4C) is guided when
Adjacent to the guide surface (7A) and the arc-shaped guide surface (7A)
Are formed in a notch so that the engaging element (4) is substantially vertical and
When in the horizontal position, the tip engaging portion (4C) is engaged.
Bottomed cylinder in which locking surfaces (7B, 7C) are formed, and the leg attaching member (3) is opened on the locking portion (7) side.
Shaped storage part (3D) is formed, and inside the storage part (3D)
Is fitted with the engaging element (4) slidably
The spring is provided between the storage part (3D) and the engaging element (4).
(5) is interposed and located on the side of the leg in the folding direction.
The side surface of the storage section (3D) has an operation section (6
B) and a cam follower provided at the inner end of the engaging element (4).
-Disengaging element having cam (6C) that abuts against (4B)
(6) is equipped so as to be able to move forward and backward in the inward and outward directions, and by pressing the operation portion (6B) of the disengagement element (6), the cam (6C) pushes the cam follow (4B), and the spring ( A support fitting for a folding leg, characterized in that the engaging element (4) is configured to be withdrawn from the locking surface (7B, 7C) of the locking portion (7) against 5).