JPH04101815U - leg mounting device - Google Patents

Abstract

(57) [Summary] [Purpose] This relates to a leg attachment device for fixing the legs of a kotatsu tower, a table, a low table, etc. to the corners of a frame. In particular, even if the legs are made of soft wood, they are reinforced to ensure firm fixation, thereby providing the legs at low cost. [Structure] A leg mount 3 is provided inside the corner 1 so as to straddle the crosspiece 2. A leg 4 made of a soft material such as inexpensive cedar or MDF is arranged on the outside of the corner 1. A cylindrical shape is hollowed out from the upper end of the leg 4, and a relatively hard reinforcing material 5 made of beech or the like is inserted therein. Then, a cylindrical nut 7 is attached to the reinforcing member 5, and the leg 4 is fixed with a bolt 6.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a leg attachment device suitable for, for example, the legs of a tower kotatsu. It is.

0002

[Conventional technology]

Traditionally, a Yagura Kotatsu Yagura was constructed by combining multiple beams at right angles to each other. A leg mount is provided inside the corner of the frame, and the leg is removably attached to the outside of the corner. A system has been devised that allows for

0003 When installing this leg, use the leg mount and the cylindrical nut screwed into the inside of the leg. The legs were fixed by tightening them with bolts or other fasteners.

0004

[Problem that the idea aims to solve]

In the leg mounting device with the above configuration, the legs are generally made of wood such as beech or rubber. It was formed by These woods are expensive, so cedar or MDF (medium density fiber) It is conceivable to form the legs with relatively inexpensive wood such as fiberboard. however, When fixing the legs with bolts, if you tighten them too tightly, cedar and MD Since F is soft, the cylindrical nut pre-screwed into the inside of the leg will fall out. Sometimes. Also, when actually using the Yagura Kotatsu, the cylindrical nut will gradually come off. It sticks out, and lack of leg strength becomes a problem.

[0005]

[Means to solve the problem]

In order to solve this problem, the leg mounting device of this invention removes part of the leg. Insert a reinforcing material made of a harder material than the material of the leg into the hole, and A cylindrical nut is attached inside.

[0006]

[Effect] In this way, the cylindrical nut is attached to the reinforcement material, which is harder than the member forming the legs. This way, even if you tighten the bolts too strongly when fixing the legs, the cylindrical shape There's no way the nut will fall out. Therefore, members such as cedar and MDF However, it is possible to form legs that can withstand actual use, reducing costs. become capable.

[0007]

【Example】

Refer to FIGS. 1 to 3 below for the leg attachment device in one embodiment of this invention. and explain.

[0008] FIG. 1 is a plan view of a corner of a tower having a leg attachment device according to this invention. 2 is a side view of a corner thereof.

[0009] The corner portion 1 is a portion where the ends of the crosspieces 2 are arranged at right angles to each other. its corner 1 is a metal leg placed so as to straddle the above-mentioned crosspiece 2 on the inside thereof. The attachment 3 is fixed from below the crosspiece 2 with the leg attachment fixing screw 8. Ru. Then, on the outside of the corner 1, the two sides of the leg 4 are attached to the end face of the crosspiece 2. They are placed in contact with each other. 6 indicates a bolt that tightens the leg 4 .

0010 Next, a description will be given with reference to FIG. 3, which is an enlarged corner cross-sectional view taken along line A-A in FIG. 1. In the figure, the legs 4 are made of a material such as cedar or MDF (medium density fiberboard). It is something that This leg 4 has a hole formed by hollowing out a cylindrical shape from its upper end. A reinforcing material 5 made of beech or the like that is relatively harder than the member forming the leg 4 is engaged with the hole. It is machined into a cylindrical shape and installed. The leg 4 is provided with the leg attachment. A pilot hole is formed at a position opposite to the insertion hole for the bolt 6 provided in the tool 3, and a cylindrical hole is formed inside the pilot hole. Nut 7 is installed. The legs 4 formed in this way are attached to bolts via the leg fixtures 3. 6 and a cylindrical nut 7, and is fixed to the outside of the corner 1.

[0011] By the way, conventional legs are made only of wood such as beech or rubber, which reduces material costs. It was expensive. Therefore, I thought it would be a good idea to form the legs with inexpensive cedar or MDF. It will be done. However, these woods are softer than beech, etc., so the legs 4 cannot be fixed. When tightening bolt 6 to secure the The frictional force on the contact surface between the prepared hole and the cylindrical nut 7 directly embedded in the leg 4 is the load. , and the cylindrical nut 7 falls out. And the smell of use However, the cylindrical nut 7 gradually comes off, causing rattling.

0012 Therefore, in this invention, the legs 4 are hollowed out and hardwood such as beech is inserted as a reinforcing material. There is. Then, this reinforcing material 5 is hollowed out to form a pilot hole, and a cylindrical hole is inserted into the hole. This is because the cut 7 is installed. In this way, the reinforcing material 5 made of hard material strengthens the tube. Since the nut 7 is held in place, it is prevented from being subjected to excessive load when tightening the leg 4. The cylindrical nut 7 will not fall out when the leg 4 is firmly fixed to the corner 1. There is no wobbling during actual use. therefore Since most of the legs 4 can be made of relatively soft wood, the cost is reduced. can be lowered.

[0013] Also, as shown in FIG. 4, from the outer side of the leg 4 that does not face the leg attachment It is also possible to cut out a cylindrical hole with a diameter larger than the pilot hole and insert the reinforcing material 5. Ru. The shape of the reinforcing material 5 and the hole of the leg 4 into which it is inserted is not limited to the cylindrical shape. It may also be transformed into a triangle, quadrangle, etc. In addition, the material of the reinforcing material 5 is not limited to beech. A similar effect can be obtained by using metal such as aluminum.

[0014]

[Effect of the idea]

As described above, according to the leg mounting device of this invention, the legs are made of relatively soft material. Even if you use this, the cylindrical nut will not fall out. Therefore, we provide legs at low cost. can do.

[0015] Furthermore, the leg attachment device related to this invention can be used not only for Yagura Kotatsu but also for tables and seats. It can also be applied to tables, etc., and has a wide range of uses.

[Brief explanation of drawings]

[Fig. 1] A corner plan view of a tower using an embodiment of the leg attachment device according to the present invention.

[Figure 2] Side view of the corner of the tower

[Figure 3] Enlarged cross-sectional view of the corner of the tower

[Fig. 4] An enlarged sectional view of a corner of a tower using another embodiment of the leg attachment device according to the present invention.

[Explanation of symbols]

1 Corner of frame 2 Crosspiece material 3 Leg mounts 4 legs 5 Reinforcement material 6 bolts 7 Cylindrical nut 8 Leg mount fixing screw

Claims (1)

[Scope of utility model registration request] Claim 1: A leg fixture is provided inside a corner of the frame, and a leg with a cylindrical nut attached inside thereof is disposed on the outside of the corner so as to face the leg fixture, and the leg fixture is connected to the leg fixture. In a leg mounting device that fixes the leg to the outside of a corner of the frame body by tightening a cylindrical nut with a tightening tool, one of the legs is fixed from either the upper end surface of the leg or the side surface outside the corner. A leg attachment device characterized in that a reinforcing material that is relatively harder than the member forming the leg is disposed in a hole formed by hollowing out the leg, and the cylindrical nut is mounted within the reinforcing material.