JP2500806Y2 - 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 relates to a folding leg support fitting used for a table, a kotatsu or a wagler.

[0002]

2. Description of the Related Art For a folding leg of a table or the like, a mounting base for supporting metal fittings is fixedly attached to a ceiling plate or a curtain plate provided below it, and the supporting metal fittings are rotatably connected to the mounting base via hinge pins. By fixing the legs to the leg mounting members, they are foldably attached to the top plate or the curtain plate. The support metal for the folding leg used here must be locked so that it does not bend over when the leg is erected, and when the leg is erected from the folded state, The structure is such that it can be easily moved to the standing state by simply raising the legs, but in order to satisfy such conditions, it is necessary to make the structure fairly and complicated.

[0003]

However, this supporting bracket for the folding leg has a structure with a large number of parts to satisfy the above-mentioned configuration, has a high failure rate, and is robust to support the leg. Must be, but this
The size of the support metal itself becomes large, and there remains a problem that the design of the furniture is impaired.

The present invention has been made in view of the above circumstances, and has a relatively simple structure and is capable of supporting a leg body with sufficient strength, and has a structure capable of sufficiently satisfying operability. Is to provide.

[0005]

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. That is, according to the present invention, a leg mounting member (3) which can rotate at least 90 degrees is connected to a mounting base (1) via a hinge pin (2), and the mounting base (1) is fixed to a top plate (8) side. The leg mounting member (3) is a supporting metal fitting for a folding leg that is fixed to the base side of the leg body (9), and the leg mounting member (3) has a cylindrical shape with a bottom opening toward the hinge pin (2). The storage part (3D) of the hinge pin (2) is integrally formed in the storage part (3D) by the action of the spring (5) provided between the storage part (3D) and the inner bottom part of the storage part (3D). ) Is provided slidably, and a notch (3E) having a tip portion (12A) formed at the bottom of the storage section (3D) is provided on one side of the engagement element (4). ) Is integrally formed, and the hinge pin of the attachment base (1) is formed. On the outer periphery of the plate portion pivotally attached to the outer periphery of (2), a cam-shaped engaging portion (6) is formed facing the engaging element (4), and the outer peripheral cam of the engaging portion (6) is formed. On the surface, an arcuate movement surface (6C) that comes into contact with the tip end surface of the engaging element (4) when the leg body (9) pivots up and down.
And surfaces (6A) and (6B) which are continuously formed above and below the moving surface (6C) and which engage with the engaging element (4) when the leg body (9) is in a substantially vertical position and a substantially horizontal position. ) Is formed.

[0006]

In the state shown in FIG. 1 in which the leg 9 is erected, the tip of the engaging element 4 is elastically engaged with the lock surface of the locking portion 6 by the spring 5 to hold the leg 9 in the erected state. In order to fold the leg body 9 from this standing state, the tip end portion 12A of the pull tab 12 is pulled downward against the spring 5 and the tip end of the engaging element 4 is disengaged from the locking surface of the locking portion 6, and the leg body By rotating 9 about the hinge pin 2, the lower surface of the top plate 8 shown in FIG. 2 can be folded and stored. In this folded state, the tip of the engaging element 4 is elastically engaged with the facing surface of the locking portion 6 by the spring 5, and the angle of the engaging surface at this time is made to be inclined more than the angle of the lock surface. Thus, by pulling the tip of the leg 9 downward by hand without pulling the pull tab 12, the standing state of FIG. 1 can be obtained.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to FIGS. 1 is a cross-sectional view showing a state in which a leg 9 is foldably connected to a top plate 8 by a support fitting according to the present invention, FIG. 1 is a state in which the leg 9 is erected, and FIG. 2 is the same folding state. It shows the state.

The support fitting of the embodiment is hingedly connected to a mounting base 1 having a fixing screw insertion hole via a hinge pin 2 so that a leg mounting member 3 can rotate at least 90 degrees. The leg mounting member 3 is integrally formed with a shaft support portion 3C for the hinge pin 2 on a mounting seat 3B having a screw insertion hole for fixing, and a bottomed cylindrical storage portion 3D is mounted on the mounting portion 3B. It is integrally formed on the plate surface of the seat 3B. An engagement element 4 that can move toward the hinge pin 2 is slidably inserted into the storage section 3D, and a ceiling of the spring storage section 4A opened in the engagement element 4 and a bottom section of the storage section 3D are formed. By the action of the compression coil spring 5 interposed therebetween, the compression coil spring 5 is elastically held toward the hinge pin 2.

On the other hand, a locking portion 6 having a guide surface 6A and a lock surface 6B is provided on the outer periphery of the plate portion pivotally attached to the outer periphery of the hinge pin 2 on the side of the mounting base 1 corresponding to the engaging element 4. It is provided integrally. The guide surface 6A
Is formed at a large angle with respect to the direction line X in which the engaging element 4 moves with respect to the hinge pin 2 so as to have an inclination angle of, for example, 40 degrees, while the lock surface 6B is formed.
Is an angle slightly inclined with respect to the direction line X so as to have an inclination angle of 15 degrees (opposite side) (this angle may be substantially parallel to the direction line X). Has been formed. In this embodiment, the engaging element 4
Also on the side, engaging surfaces 4B and 4C having slopes corresponding to the guide surface 6A and the lock surface 6B are formed at the tips thereof. The locking portion 6 has a guide surface 6A and a lock surface 6B.
And a moving surface 6C having an arc shape.

Further, the engaging element 4 has a plate-like pull tab 1
2 are integrally projected, and the pull tab 12 slidably contacts the inner wall surface of the mounting seat 3B of the leg mounting member 3.
One end of the mounting seat 3B is extended downward in FIG. 1 to form a receiver 13, and a tip portion 12A of the puller 12 is extended downward in parallel with the receiver 13. This recipient 1
3 and the pull tab 12 are notches 3 formed in the head of the storage portion 3D.
It is slidably extended downward from E, the protruding end of the receiver 13 is bent outward, and the tip 12A of the puller 12 is spaced above the protruding end of the receiver 13. It is bent almost parallel. As a result, the tip end 12A of the pull tab 12 can be pulled out downward by placing a finger on the receiver 13.

In the supporting metal fitting having such a structure, the mounting base 1 is screwed to the top plate 8 and the mounting seat 3B is screwed to the leg body 9 to fix the leg body 9 to the top plate 8. It can be installed in a foldable state. The state shown in FIG. 1 is a state in which the legs 9 are erected with respect to the top plate 8. In this state, the engagement element 4 engages with the locking portion 6 with its engagement surface 4C in contact with the lock surface 6B. It has been stopped. In this state,
Even if the leg 9 is bent upward, the lock surface 6B
Since the engaging element is supported by, the locked state is maintained. In this embodiment, the lock surface 6B has a small inclination angle with respect to the direction line X, but among the forces acting on the lock surface, the friction with the engaging element 4 is greater than the component force of pushing the spring 5. The resistance is extremely large, so there is no danger of the lock being released inadvertently. As is apparent from FIG. 1, in the direction opposite to the above, the head of the leg 9 is in contact with the lower surface of the top plate 8 and the movement of the leg 9 in that direction is blocked. The function of directly supporting the load applied to the top plate 8 without using a support fitting.

To release the locked state, the receiver 1
It suffices to put the finger on 3 and pull the tip portion 12A of the pull tab 12 downward, and in that state, rotate the leg 9 upward. By pulling the pull tab 12, the engagement element 4 retracts against the spring 5, and the engagement surface 4C can be disengaged from the lock surface 6B.
This allows the leg 9 to move upward. During the movement in the folding direction, if the pulling handle 12 is kept retracted until the engaging element 4 abuts against the moving surface 6C at its top, then the restoring force of the spring 5 causes it to move in the direction of the hinge pin 2. Even if the tip of the engaging element 4 comes into contact with and slides on the moving surface 6C, the operation in the folding direction is not hindered.

FIG. 2 shows a state in which the leg body 9 is rotated about 90 degrees from the upright state to the folded state. Here, the engagement element 4 is locked to the locking portion 6 with the engagement surface 4B elastically contacting the guide surface 6A. When the leg 9 is raised from such a folded state, the tip of the leg 9 may simply be rotated by applying a downward force. At this time, the force acting on the guide surface 6A via the engagement element 4 is distributed to the frictional resistance between the engagement element 4 and the guide surface 6A and the component force for returning the spring. Has a large angle, the spring return component force is larger than the frictional resistance, so that the engagement element 4 disengages from the engagement portion 6 while sliding the engagement surface 4B on the guide surface 6A. Then, the top portion thereof moves to the moving surface 6C. In this way, the leg can be switched from the folded state to the standing state without any special operation.

The mounting base 1 of the support fitting may be mounted on the back surface of the curtain plate provided under the top plate 8. In this case, when the leg body 9 is upright, the mounting seat 3B of the leg mounting member 3 is at a position of about 180 degrees with respect to the mounting base 1 with respect to the hinge pin 2, and the locking portion 6 faces the engaging element 4. It is formed at the position.

[0015]

As described in detail above, according to the present invention, the leg mounting member 3 which can be rotated at least 90 degrees through the hinge pin 2 is connected to the mounting base 1 in a hinge shape, and the leg mounting member 3 has the above-mentioned structure. A bottomed cylindrical storage portion 3D that opens in the direction of the hinge pin 2 is integrally formed, and a spring 5 provided between the storage portion 3D and the inner bottom portion of the storage portion 3D serves to function as the hinge pin. An engaging element 4 projecting in the direction 2 is slidably provided, and a puller 1 having a tip portion 12A protruding from a notch 3E formed in the bottom portion of the housing portion 3D is provided on one side of the engaging element 4.
2 are integrally formed, and a guide surface and a lock surface of the engagement element 4 are provided on the outer circumference of a plate portion pivotally attached to the outer circumference of the hinge pin 2 of the mounting base 1 so as to face the engagement element 4. Since the locking portion 6 having is formed, the leg body 9 can be held in the upright state or moved to the folded state by pulling out or releasing the puller 12, which is excellent in safety and folding workability. There is.

Moreover, the spring 5, the engaging member 4 and the pull tab 12 for holding or releasing the leg 9 in the upright state.
Is provided in a storage portion 3D formed integrally with the leg mounting member 3 that constitutes one of the hinges, and the guide surface of the engaging element 4 is provided.
Since the locking portion 6 having the lock surface and the moving surface is provided on the mounting base 1 which constitutes the other side of the hinge, it is compact as a whole, is easy to assemble and handle, and it is small in size and sufficient strength can be secured. It has excellent effects such as few failures. Furthermore, when the leg body 9 is moved up and down, the tip of the engaging element 4 on the leg body 9 side moves while sliding along the cam surface of the cam plate-shaped locking portion 6 on the top plate 8 side. Since it is locked and moves in contact with the arcuate moving surface 6C during its movement, its vertical movement and locking operation are easy and smooth. Also, at the time of manufacturing,
Even if there is a slight misalignment between the tip of the and the cam surface of the locking portion 6, since they are in surface contact with each other, the guiding and engaging functions are not adversely affected, and the number of defective products is small. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a leg is erected in a mounting state of a support fitting according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which the leg is folded.

[Explanation of symbols]

1 mounting base, 2 hinge pin, 3 leg mounting member, 4 engaging element, 5 spring,
6 locking part, 6A guide surface, 6B lock surface, 12 puller.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Fujita Nakamichi 2-11-5 Higashi-Nippori, Arakawa-ku, Tokyo Isokawa Sangyo Co., Ltd. (56) References: 53-96401

Claims (1)

(57) [Scope of utility model registration request] 1. A hinge pin (2) on a mounting base (1).
A leg mounting member (3) which can be rotated at least 90 degrees is connected to the mounting base (1) on the top plate (8) side, and the leg mounting member (3) is mounted on the base side of the leg body (9). In the supporting metal fitting for a folding leg to be fixed, a bottomed cylindrical storage portion (3D) that opens in the direction of the hinge pin (2) is integrally formed in the leg attachment member (3), and the storage portion is fixed. Inside the (3D), an engagement element (4) projecting toward the hinge pin (2) is slidable by the action of a spring (5) interposed between the inner bottom of the storage section (3D). A notch (3) is provided on one side of the engaging element (4) and has a tip portion (12A) formed at the bottom of the storage portion (3D).
The pull tab (12) protruding from E) is integrally formed, and the engaging part (4) is attached to the outer periphery of the plate portion pivotally attached to the outer periphery of the hinge pin (2) of the mounting base (1). A cam-shaped locking part (6) is formed facing each other, and the locking part (6)
The leg (9) is swung up and down on the outer peripheral cam surface of
When moving, it moves in an arc that makes contact with the tip of the engaging element (4).
A face (6C) and a continuous cutout above and below the moving face (6C)
The leg body (9) is formed at a substantially vertical position and a substantially horizontal position.
Surfaces (6A), (6B) that engage with the engaging element (4) at a certain time
Support brackets foldable legs, characterized in that There are formed.