JPH0682933U - Folding leg support bracket - Google Patents

Abstract

(57) [Abstract] [Purpose] The structure of the engaging element is improved so that the engaging element can be disengaged both in the standing state and the folded state of the leg and at a position that is relatively easy to operate. Providing support hardware for folding legs. A leg mounting member (3) capable of rotating at least 90 degrees is connected to a mounting base (1) via a hinge pin (2), and a spring (5) is provided on the leg mounting member side toward the hinge pin side. It is equipped with an engager (4) to be held, and correspondingly, a guide surface (7A) and a lock surface (7B, 7) for the engager on the side of the mounting base.
In the metal fitting for a folding leg equipped with a locking portion (7) having C), the leg attachment member (3) has a disengagement element (6) which is located on the side in the folding direction and which moves forward and backward. ) Is provided, and the disengager is provided with a cam (6C) that guides a cam follow (4B) provided on the engager. The cam follower is pushed to withdraw the engagement element from the lock surface of the locking portion against the spring.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a supporting metal for a folding leg used for a table, a kotatsu, a gutter, or the like.

[0002]

[Prior 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 support leg through a support metal fitting. A leg mounting member fixed to the curtain plate side and rotatably connected to the mounting base via a hinge pin is fixed to the folding leg side. As a supporting metal for such a folding leg, the applicant has already been able to support the folding leg with respect to the top plate or the curtain plate with a simple structure, but with sufficient strength. An excellent configuration has been proposed, which is arranged inconspicuously.

Here, a leg mounting member that can rotate at least 90 degrees is connected to a mounting base via a hinge pin, and an engaging element that is elastically held toward the hinge pin side by a spring is provided on the leg mounting member side. Correspondingly, the mounting base side is equipped with a locking portion having a guide surface and a locking surface for the above-mentioned engaging elements. Therefore, unless the operating force for releasing the engagement with the cam surface acts on the engaging element against the spring, the engaging element can be securely engaged with and retained by the locking portion. it can. In order to release the engagement, the engagement element is provided with an operation knob for operating against the spring.

[0004]

[Problems to be solved by the device]

 However, according to the above conventional support metal fittings, the legs are locked in the upright state of the legs, but are not locked in the folded state and are only held by the elastic force of the spring. The body suddenly stood up and was dangerous. In addition, since the operation knob of the mating element is provided at the position on the back side of the leg, a situation such as pinching a finger during operation may occur, which is not preferable in terms of operability and safety.

[0005]

[The purpose of the device]

 The present invention has been made based on the above circumstances, and it is possible to lock the legs in both the upright state and the folded state and to disengage the engaging elements at a position that is relatively easy to operate. It is intended to provide a supporting bracket for a folding leg, which has an improved structure and is excellent in operational safety.

[0006]

[Means for Solving the Problems]

 For this reason, in the present invention, as is apparent from the illustrated embodiment, the mounting base (1) is connected to the leg mounting member (3) capable of rotating at least 90 degrees via the hinge pin (2). The leg mounting member side is provided with an engaging element (4) elastically held toward the hinge pin side by a spring (5). Correspondingly, an engaging element (4) of the engaging base is attached to the mounting base side. A supporting metal fitting for a folding leg equipped with a locking portion (7) having a guide surface (7A) and a locking surface (7B, 7C) for holding the leg mounting member (3) on the side surface in the folding direction. Is equipped with an engaging / disengaging element (6) which moves forward and backward, and the engaging element is provided with a cam (6C) for guiding the cam follower (4B) provided on the engaging element. , By pressing the disengager, the cam Press row, against the spring, and the engager configured to leave the locking surface of the locking portion.

[0007]

[Action]

 Therefore, since the operating portion (6B) of the disengager is located on the side of the folding leg in the folding direction, unlike the conventional case, the leg body is locked in both the upright state and the folded state, Moreover, regardless of how the legs are folded, they are always placed in an easy-to-operate state.

[0008]

【Example】

 Hereinafter, the present invention will be described in detail 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 screw insertion hole 1A for fixing via a hinge pin 2 in a state in which it can be rotated at least 90 degrees. The leg mounting member 3 has a shaft seat 3C for the hinge pin 2 integrally formed on a mounting seat 3B having a screw insertion hole 3A for fixing, and a bottomed cylindrical storage portion 3D. It is formed integrally with the mounting seat 3B. An engaging element 4 that can move toward the hinge pin 2 is slidably inserted into the storage section 3D, and the ceiling of the spring storage section 4A opened in the engaging element 4 and the bottom section of the storage section 3 are formed. By the action of the compression coil spring 5 interposed therebetween, it 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 moves forward and backward. The disengager 6 has a body portion 6A slidably moved in and out of the storage portion 3, and an operation portion 6B projecting like a button at the outer end thereof. At its inner end, a cam 6C for guiding the roller-like cam follower 4B provided on the engaging element 4 is provided. The engagement element 4 has a slit space 4D formed in the wall thereof, the slit space 4D opening toward the engagement release element 6, and the cam follower 4B is provided in the slit space 4D. With 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 6B. 4 can be pushed back to the bottom side of the storage section 3.

On the other hand, a locking portion 7 having a guide surface 7A and lock surfaces 7B and 7C is integrally provided on the side of the mounting base 1 corresponding to the engaging element 4. The guide surface 7A is constituted by an arc surface of, for example, approximately 90 degrees with respect to the direction in which the engaging element 4 moves with respect to the hinge pin 2, and the locking surfaces 7B and 7C are formed by the engaging element 4A. 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 end side surface of the engaging portion 4C. In the above embodiment, reference numeral 6D is a retaining pin of the engagement releasing element 6, and 6E is a slide groove formed on the body portion 6A of the engagement releasing element 6 for guiding the retaining pin 6D. Is.

As shown in FIGS. 4 and 5, the support bracket having such a structure has its mounting base 1 screwed to the top plate 8 and the mounting seat 3 B is screwed to the tip of the leg 9. Thus, the legs 9 can be foldably attached to the top plate 8. The state shown in FIG. 4 is a state in which the legs 9 are erected with respect to the top plate 8. In this state, the engaging element 4 is in a state in which the engaging portion 4C is in contact with the lock surface 7B. It is locked at 7. In this case, even if the leg 9 is bent in the direction of the arrow A, the engaging portion 4C contacts 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 using a support fitting.

To release the locked state, the head of the disengagement element 6, that is, the operation 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 engaging portion 4C is retracted from the position of the lock surface 7B and the engagement between the engaging element 4 and the locking portion 7 is released, the hinge pin 2 is used as the center of rotation for the leg 9. Can be rotated in the direction of arrow A to fold. In this case, in the process in which the tip of the engagement element 4 slides on the guide surface 7A, the engagement element 4 is pressed against the guide surface 7A by the elastic force of the spring 5 even if the pressing of the operation portion 6B is released. The rotation operation is not hindered. Then, when the leg body 9 rotates about 90 degrees and the tip of the engaging element 4 crosses the guide surface 7A and corresponds to the other lock surface 7C, the elastic force of the spring 5 again causes The engagement portion 4C is engaged with the lock surface 7C, 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.

Although the mounting base 1 of the support fitting is attached to the top plate 8 in the above embodiment, it goes without saying that it may be attached to the curtain plate provided below the top plate. In this case, the mounting base 1 is screwed to the inner side of the curtain plate, and the curtain base plate can be supported by the head of the leg body 9 with the legs 9 standing upright. The relative positions of the guide surfaces 7A and the lock surfaces 7B and 7C of the locking portion 7 with respect to 1 may be formed by changing the phase by about 90 degrees in the direction opposite to the arrow A as compared with the above embodiment. .

[0014]

[Effect of device]

 The present invention has been described in detail above. A leg mounting member capable of rotating at least 90 degrees is connected to a mounting base via a hinge pin, and a spring is attached to the leg mounting member side toward the hinge pin side by a spring. In a supporting metal fitting for a folding leg, which is equipped with an engaging element and correspondingly is equipped with a locking portion having a guide surface and a locking surface for the engaging element on the side of the mounting base, Is equipped with an engaging / disengaging element which is located on the side surface side in the folding direction and which advances and retracts. The engaging / disengaging element is provided with a cam for guiding a cam follower provided on the engaging element. By pressing the engagement releaser, the cam follower is pushed by the cam and the engagement element is withdrawn from the lock surface of the locking portion against the spring. Operation unit, since the flank side of the folding direction of the folding legs, unlike the past, regardless of the folding operation of the legs, always placed in state easy to operate. Therefore, as in the conventional case, direct support of the top plate and the like by the legs can be achieved with sufficient strength, and the unlocking operation at the standing position and the folding position of the legs can be performed safely and easily. effective.

[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 above 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 Releaser 6C Cam 7 Locking Part 7A Guide Surface 7B, 7C Locking Surface

Claims (1)

[Scope of utility model registration request] 1. A leg mounting member which is rotatable 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. Corresponding to the above, in a supporting bracket for a folding leg equipped with a locking portion having a guide surface and a locking surface for the engaging element on the mounting base side, the leg mounting member includes a side surface in the folding direction. Is equipped with an engaging / disengaging element that advances and retreats, and the disengaging element is provided with a cam that guides a cam follow provided on the engaging element. Then, the supporting fitting for the folding leg is characterized in that the cam follower is pushed by the cam and the engaging member is withdrawn from the lock surface of the locking portion against the spring.