JPH0429296Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application The present invention relates to a frame top plate slip prevention device such as a so-called furniture-style kotatsu.

(b) Conventional technology In general, a furniture-like kotatsu is used as a so-called low table by placing a heavy top plate on the top surface of a rectangular frame, but in this case, the top plate moves left and right, which is inconvenient. . For this reason, as shown in Japanese Utility Model Publication No. 57-41655, anti-slip elastic bodies are fixed to the corners of the frame with screws to prevent the top plate from moving. When pushed from side to side, there was a drawback that the elastic body moved while remaining in close contact with the top plate and came off. Further, there is a drawback that the elastic body deforms or cracks due to deterioration due to long-term use and comes off from the threaded portion.

(c) Problems to be solved by the invention The present invention prevents the top plate from moving and prevents the elastic cushion material on which the top plate is placed from easily coming off.

(d) Means for solving the problem The present invention includes a frame body in which a plurality of side frames are combined and fixed, reinforcing leg metal fittings attached between adjacent side frames at the corners of this frame body, An upper hinge body is attached and fixed to the leg fitting and located at the corner portion, and a lower hinge body is pivotably supported at the lower part of the upper hinge body and to which the leg body of the frame body is fixed. A hinge cover is provided that is attached to cover the upper hinge body, and the hinge cover is attached so that its upper surface is substantially flush with the top plate mounting surface of the frame body. An elastic cushion material is fitted into the fitting hole provided on the upper surface of the hinge cover, and the upper end of the elastic cushion material projects onto the top plate mounting surface, and the lower end is supported on the upper surface of the upper hinge body. The configuration is as follows.

(E) Function The upper hinge body and the lower hinge body are pivotally supported so as to be swingable, and an elastic cushion material is fitted into a fitting hole provided on the upper surface of the hinge cover that covers the upper hinge body, and the elastic cushion material Since the upper end of the material protrudes onto the top plate mounting surface and the lower end is supported by the upper surface of the hinge body, the top plate is prevented from moving in the left-right direction.

(f) Example An example in which the present invention is applied to a furniture-like electric kotatsu will be described based on the drawings.

FIG. 1 is a perspective view of an electric kotatsu to which the device according to the present invention is applied. In this drawing, a rectangular frame 1 is constructed by combining a plurality of crosspieces 2 into a grid and fixing the periphery thereof with four side frames 3. Adjacent 2 inside each of the four corners of this frame
Leg fittings 4 each having a U-shaped cross section are attached and fixed between the inside ends of the side frames 3, 3 of the book with wood screws 5 (see FIG. 3) for reinforcement. FIG. 3 shows an exploded perspective view of the members constituting the device according to the present invention. As is clear from this drawing, the leg fittings 4 include a front plate 4a, an upper plate 4c, and a lower plate 4d parallel to the upper plate.
It is formed into a U-shape, with a through hole 4b in the approximate center of the front plate and two hook holes 4 in the lower plate.
E and 4e are drilled respectively.

In FIG. 3, the upper hinge body 6 is inserted into and covered with a hinge cover 16 made of synthetic resin, and is constructed as follows. That is, the upper hinge body is formed by bending a metal plate, and the front projecting plate 6b is formed by bending forward from the lower end of the front plate 6a, and the front protruding plate 6b is formed by bending backward from the upper end of the front plate. Rear flat plate 13
and both side plates 6c, 6c, which are bent rearward from both side ends of the front plate. Front projecting plate 6b
has two latching claws 7, 7 on its front edge, and a shaft hole 8 is provided in each shaft piece 9 hanging down from both ends of the front projecting plate 6b. The rear flat plate 13 has a rectangular guide groove 12 that opens rearward at the center of its rear end, and a pair of guide pieces 11, 11 are bent downward from opposite side edges of the guide groove to form this guide groove. It is formed. The front plate 6a and the opposing side edge 10 of each guide piece 11 are tapered so that the distance from the front plate gradually increases toward the lower free end of the guide piece. A screw hole 14 is bored approximately in the center of the front plate 6a, and a nut 15 is welded to the back surface of the screw hole 14. This nut can be omitted if the screw hole 14 has a sufficient holding force for the screw.

The upper hinge body 6 is inserted into the hinge cover 16 as described above, and the side plates 6 of the upper hinge body 6
c and 6c serve to restrict the position during this insertion.

The hinge cover 16 has a housing shape with an open bottom, and includes an inner flat plate 16a and a substantially fan-shaped upper plate 16.
b, outer arc face plate 16c and both sleeve covers 21, 2
1 as the main component. Top plate 16a
is provided with a rectangular fitting hole 17 and an insertion hole 19. A rectangular elastic cushion member 26 made of rubber is inserted into the fitting hole 17 from inside the hinge cover 16 . This cushion material has an annular step 26a, and this step comes into contact with the lower edge of the fitting hole 17 to restrict insertion, and the upper end 26b of the cushion material 26 passes through the fitting hole 17 and passes through the upper surface plate. It will be in a state where it protrudes upward from 16b. In this state, when the upper hinge body 6 is inserted into the hinge cover 16, the upper hinge body 6 is attached to the lower surface of the cushion material 26.
It is held by the front half portion of the rear plane 13 of (see FIG. 4).

Semicircular recesses 18 are formed at the rear of both lower edges of the through hole 19 of the hinge cover 16, respectively. A lock release button 22 is inserted into the insertion hole 19 from inside the hinge cover 16, and shaft pin protrusions 23 provided at the rear lower ends of both sides of the button are locked in the recess 18. This locked state is achieved by fixing the rear end of the leaf spring 24 to the inner surface of the top plate 16b of the hinge cover 16 with the screw 25, so that the tip of the leaf spring 24 comes into elastic contact with the lower surface of the tip of the button 22, and is constantly pushed upward. It is maintained by granting it an auxiliary force. still,
This upward force forces the tip of the button 22 into the insertion hole 19.
Stopper pieces 22a provided on both lower sides of the button 22 are made to abut against the lower edge of the insertion hole 19 so as not to protrude upward.

In this way, the lock release button 22, the leaf spring 24
After attaching or mounting the cushion material 26 to the top plate 16b of the hinge cover 16 from inside the hinge cover 16, the upper hinge body 6 is attached to the hinge cover 1.
6 , the screw hole 14 provided in the front plate 6 a of the upper hinge body 6 comes to face the screw insertion hole 20 provided approximately in the center of the flat plate 16 a of the hinge cover 16 . Here, with the hooks 7, 7 of the upper hinge body 6 hooked into the hook holes 4e of the U-shaped leg fittings 4, bolts are inserted through the through holes 4b and screw insertion holes 20 of the leg fittings 4. 29 into the screw hole 14 and the nut 15, the upper hinge body 6 and the hinge cover 16 are attached and fixed to the leg fitting 4.

The four legs 30 of the kotatsu shown in FIG. It is rotatably connected to the upper hinge body 6 inserted into the upper hinge body 6. That is, as shown in FIG. 3, the upper end of the leg 30 is provided with a shape from the above-mentioned outline so that when the leg 30 is extended, the upper end of the leg 30 is rotated and inserted into the hinge cover 16 and the upper hinge body 6. A small-diameter bulging portion 30a is formed by the presence of sleeve step portions 34 on both sides. This bulging portion consists of a front surface 30b, an upper surface 30c, a spherical rear surface 30d, and both side surfaces 30e, and the width of the front surface 30b is set to be slightly smaller than the distance between the side plates 6c, 6c of the upper hinge body 6.

A lower hinge body 35, a stopper 40, and a hinge stand 42 are housed in the bulge 30a as follows.

That is, the hinge base 42 has a shape similar to the bulging part 30a, but a shallow step part 42a and a central groove part 42b are formed on the front surface, and the stopper 39 is located in the shallow step part 42a so as to be vertically movable. . A spring 45 is stretched between the lower end of the stopper and a locking pin 44 provided on the lower end surface of the shallow step and the central groove 42b to constantly urge the stopper 39 upward. The lower hinge body 35 includes a front plate 35a and wing pieces 35 bent rearward from both side edges of the front plate 35a.
b, 35b are formed into a U-shape, and the front plate 35a is located in front of the shallow part 42a and the stopper 39, and both wing pieces 35b are located in front of the hinge base 42.
It is located outside both side surfaces 42a and 42c. In this case, the rear protruding pieces 35c provided on both left and right edges of the notch 38 at the upper end of the front plate 35a are connected to the stopper 3.
It fits into the slit 39a provided in the spring 4.
5 restricts the upward movement position of the stopper 39. In this regulation state, the upper end of the stopper 39 is the upper surface 42c of the hinge base 42.
It stands out a little more.

In this way, the stopper 39, the lower hinge body 35
and the hinge stand 42 are inserted into the internal upper end of the leg 30, and the screw 47 is inserted through the screw insertion hole 33 provided in the sleeve step 34 at the upper end of the leg 30.
is fixed to the screw hole 43 of the hinge stand 42.

In this case, the bent protruding piece 40 and the contact pieces 41, 41 at the upper end of the stopper 39 come to face the window 32 formed across the upper surface 30c of the bulging portion 30a and the front plate 30ab. Further, a protrusion plate 35d is provided that protrudes forward from the lower end of the front plate 35a of the lower hinge body 35, and each upright piece 37 raised on both side edges of this protrusion plate is used to expand the leg body 30 when the hinge base 42 is fixed. Cut groove 3 provided adjacent to the exit portion 30a
It protrudes upward from 1 and 31. Each standing piece 37
Since each shaft piece 9 of the upper hinge body 6 is located on both sides of the upper hinge body 6 , the exposed form of both the upright pieces 37 need not be limited to that through the cut groove 31 .

By aligning the through hole 36 of the upright piece 37 with the shaft hole 8 of the shaft piece 9 of the upper hinge body 6 and inserting and fixing the shaft pin 28 into these holes, both the hinge bodies 6 and 35 are pivotally connected. be done.

In actual assembly, the hinge cover 16 is placed over the upper hinge body 16 in this connected state, and then the upper hinge body 6 is fixed to the leg fitting 4 with bolts 29. At the same time, the hinge cover 16 is attached to the upper hinge body 6,
Further, the upper surface of the hinge cover 16 is substantially flush with the top plate mounting surface of the frame 1.

In order to cover the lower openings of the sleeve covers 21 of the hinge cover 16, the caps 27 are press-fitted into the lower openings.

Further, a leg seat 46 is fitted and fixed to the lower end of the leg body 30.

In the above configuration, the legs 30 are in an extended state, that is, perpendicular to the side frame 3, and a folded state, that is, parallel to the side frame 3, and FIG. FIG. 5 is a cross-sectional view of the main part in the folded state. Using these drawings, the holding of the leg 30 when it is extended, that is, the so-called locked state and its release will be explained.

When the leg body 30 is extended from the folded state shown in FIG. It goes into the rear part of 6. At this time, the contact piece 41 of the stopper 39 facing the window 32 at the top of the bulge comes into contact with the lower surface 11a of the guide piece 11 of the upper hinge body 6, so that the stopper 39 moves downward against the biasing force of the spring 45. Being pushed down. When the stopper 39 is further rotated, the guide piece 1 is pushed down further.
1, and the stopper 39 is connected to the spring 45.
The abutting piece 4 of the stopper 39 rises due to the applied force of
1 is located between the opposite side edge 10 of the guide piece 11 and the front plate 6a. FIG. 4 shows this state, and even if the leg body 30 is attempted to be rotated in the direction of the arrow in the figure, the abutment piece 41 of the stopper 39 will not touch the guide piece 11.
It comes into contact with and its rotation is prevented. That is, it is in a locked state. In this locked state, the top plate 48 is placed on the frame 1. In this case, the top plate 48 is placed on the elastic cushion material 26, so the weight of the top plate 48 and the weight applied to the top plate are the elastic cushion material 26, the upper hinge body 6, the lower hinge body 3.
5 and is transmitted to and supported by the leg body 30.

To release the locked state, the legs 30 may be rotated in the direction of the arrow in FIG. 4 while holding down the unlocking button 22. That is, by pressing the button 22,
The front lower end 22b (see FIG. 3) of the button 22 pushes down the bent protruding piece 40 of the stopper 39.
Therefore, this projecting piece is located below the guide piece 11, and if the leg body 30 is rotated in this state, it will pass through the guide piece 11 and the lock will be released.

Next, as shown in FIG. 4, the top plate 48 is placed on the frame 1 with the legs 30 extended. In this case, the top plate 48 is placed on the elastic cushion members 26 located at the four corners of the rectangular frame 1 as shown in FIG. 4, so that it is prevented from slipping. Moreover, since each cushion material 26 is attached so that its longitudinal direction is at about 45 degrees with respect to the side frame 3 of the frame body 1, the cushion material 26 is prevented from slipping against movement of the top plate 48 in any direction. Furthermore, Figure 2 shows the leg 3.
0 is a perspective view seen from below when folded.

(g) Effect of the invention As described above, the present invention pivots the upper hinge body and the lower hinge body so as to be able to swing freely, and the fitting hole provided on the upper surface of the hinge cover that covers the upper hinge body has an elastic member. The cushion material is fitted, and the upper end of the elastic cushion material protrudes onto the top plate mounting surface, and the lower end is supported by the upper surface of the upper hinge body, thereby preventing the top plate from moving in the left-right direction. In addition, the elastic cushion material can be fixed without using wood screws or the like, and there is no cracking or deterioration associated with fixing. Furthermore, since the load applied to the top plate is transmitted to the legs through the elastic cushioning material, no load is applied to the frame, thereby preventing the corners of the frame from breaking.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of an electric kotatsu to which the device according to the present invention is applied, Fig. 2 is a perspective view seen from below when the legs are folded, and Fig. 3 is an exploded perspective view of the members constituting the device according to the present invention. , FIG. 4 is a cross-sectional view of the main part with the legs extended, and FIG. 5 is a cross-sectional view of the main parts with the legs folded. 1...Frame body, 3...Side frame, 4...Leg fittings, 6...
...Upper hinge body, 16...Hinge cover, 17...
Fitting hole, 26... elastic cushion material, 35... lower hinge body.

Claims (1)

[Claims for Utility Model Registration] A frame body in which a plurality of side frames are combined and fixed, reinforcing leg fittings installed between adjacent side frames at the corners of this frame body, and reinforcing leg fittings attached and fixed to the leg fittings. The frame includes an upper hinge body located at the corner portion, and a lower hinge body pivotably supported by a lower part of the upper hinge body and to which the legs of the frame body are fixed. A hinge cover is installed to cover the upper hinge body, and the hinge cover is installed so that its top surface is substantially flush with the top plate mounting surface of the frame body, and the hinge cover is installed on the top surface of the hinge cover. An elastic cushion material is fitted into the fitting hole, and the elastic cushion material has an upper end protruding onto the top plate mounting surface and a lower end supported by the upper surface of the upper hinge body. Frame top plate anti-slip device.