JP3069930U - folding chair - Google Patents

Abstract

(57) [Summary] [Problem] To provide a high strength pipe chair convenient for carrying and storing. SOLUTION: A sheet plate, four connecting pieces respectively installed at four corners at the bottom of the sheet plate and each having one joint hole, a foot device, and two corresponding steel pipes having the same inverted U-shape. Each steel pipe is provided with one horizontal bar and two legs extending two ends of the horizontal bar downward for a predetermined length, and the two horizontal bars correspond to the joining holes of the four connecting pieces. The foot device, provided with four pivotal perforations, and four positioning blocks, each including one lateral hole penetrating its two sides and one shaft hole penetrating its top and bottom. The lateral hole communicates with the shaft hole, and the diameter of the circle corresponds to the pipe diameter of each foot, and the shaft hole corresponds to the pivot hole of the foot, and the pivoting means is provided. The four positioning blocks, which penetrate the positioning block and the foot and are connected to the joining holes of the connecting piece. It has a lock.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a kind of pipe chair, particularly a structure in which a seat plate and a steel pipe are combined, and two steel pipes of feet can be stacked and stored in opposite directions, thereby saving space for transportation and storage. Conveniently related to the structure of the pipe chair.

[0002]

[Prior art]

 FIG. 1 shows the structure of a known pipe chair. That is, one wooden sheet plate 1 provided with one fixing block 2 having a plurality of screw holes 201 at the bottom, and two inverted U-shaped steel pipes 5 are fixed to one mounting plate 4 by welding. Foot device 3. The two inverted U-shaped steel pipes 5 are provided with two legs 501 and 502 having an included angle of 90 degrees and extending downward by a predetermined length. Each of the two legs 501 and 502 is provided with a block body 503, and the upper end of each block body 503 comes into contact with the bottom of the sheet plate 1 to provide a support point. A corresponding number of circular holes 401 are provided at positions corresponding to the screw holes 201 of the hook 2, and are screwed by the corresponding number of screws 402. Since the structure of such a pipe chair is a structure in which two inverted U-shaped steel pipes 5 are fixed and integrated with the mounting plate 4, the volume thereof is considerably large, and therefore, it is relatively large during storage and transportation. It requires a large storage space and has to be transported by many trucks, making it impossible to reduce product prices. This is the first disadvantage. Further, the second disadvantage is that the block body 503 provided on the feet 501 and 502 is not fixed and moves to lose the function as a support point. In the pipe chair shown in FIG. 2, two inverted U-shaped steel pipes 6, 7 are separately fixed to mounting plates 8, 9, and the two mounting plates 8, 9 each have an upper concave portion 801 and a lower concave portion 901. The upper concave portion 801 and the lower concave portion 901 are overlapped to face each other to form a circular mounting plate, and these two concave portions 801 and 901 are combined with each other with perforations 802 and 902. After that, the bolts 10 are passed through the perforations 802 and 902 and screwed into the corresponding screw holes 121 of the fixing block 12 at the bottom of the sheet plate 11 to achieve positioning. The well-known technique shown in FIG. 2 is the one shown in FIG. 1 in which the mounting plate is divided into two parts. In the disassembled state, two inverted U-shaped steel pipes 8 and 9 can be overlapped. The volume of the foot device can be reduced to half that of FIG. However, although this solved the first drawback of FIG. 1, in the structural strength of the overall foot device, the connection of the two inverted U-shaped steel pipes 6, 7 was located in the middle, which also 11 is also a point that receives the human body weight intensively, so the mounting plates 8, 9 fixed to the two inverted U-shaped steel pipes 6, 7 receive the weight and sink, causing the deformation of the connecting part, and As a result, the four legs were no longer supported on the ground in equilibrium, and the chair was damaged and unusable. Moreover, the two mounting plates 8, 9 protruding from the ends of the two prismatic steel pipes 6, 7 are liable to be worn by collision in the course of transportation, which is also a major drawback.

[0003]

[Problems to be solved by the invention]

 An object of the present invention is to reduce the space occupied by a foot device in a pipe chair formed by connecting a steel pipe to a seat plate, and to make it easy to transport and store.

[0004] The present invention has as its next object to strengthen the structure of the pipe chair and extend the service life of the chair.

[0005]

[Means for Solving the Problems]

 The invention according to claim 1 is a sheet plate having a predetermined shape, four connecting pieces respectively provided at four corners at the bottom of the sheet plate and each having one joint hole, and a foot device, corresponding to the same. A pair of steel pipes, each steel pipe having an inverted U shape, each steel pipe comprising one horizontal bar and two legs extending two ends of the horizontal bar downward by a predetermined length. The foot device, comprising four feet, stably supported on the ground, and having four pivotal perforations corresponding to the joining holes of the four connecting pieces on the two horizontal bars, Four positioning blocks are provided, each having one horizontal hole penetrating its two side edges and one shaft hole penetrating the top and bottom thereof, the horizontal hole communicating with the shaft hole, and a horizontal hole. The diameter of the hole corresponds to the diameter of the tube of each foot, and the shaft hole is formed in the foot. The four positioning blocks described above, wherein one pivot means penetrates through the positioning block and the foot and is connected and positioned in the joint hole of the connecting piece later, corresponding to the two steel pipes of the foot device The pipe chair is characterized in that it is superimposed so that it can be stored and can be stored, reducing the occupied space and making it convenient for transportation and storage. The invention according to claim 2 is the pipe chair according to claim 1, characterized in that the foot device is formed by combining two corresponding same inverted U-shaped steel pipes in a crossed manner. According to a third aspect of the present invention, a lower recess is formed at the center of the horizontal bar of one steel pipe of the foot device, and an upper recess is formed at the center of the horizontal bar of the other steel pipe. 3. The two steel pipes according to claim 2, wherein the recesses are formed so as to correspond to each other up and down, the contact portions are horizontal surfaces, each having one screw hole, and these two steel pipes are connected by one bolt. The pipe chair is described. According to a fourth aspect of the present invention, the connecting piece is an iron plate piece, a joint hole at the center of the plate piece has a female screw, a plurality of holes are provided around the joint hole, and a corresponding number of screws are provided. The pipe chair according to claim 1, characterized in that the pipe chair is screwed through the connecting piece to the bottom of the seat plate. The invention according to claim 5 is characterized in that the positioning block is a trapezoidal block having a large top and a small bottom, and an upper end surface of a relatively large area is joined to the coupling piece. It has a pipe chair. The invention according to claim 6 is characterized in that the shaft hole of the positioning block is a fisheye hole having a small hole diameter on the upper side and a larger hole on the lower side, and the pivoting means is a pitted screw having a hexagonal concave hole. The pipe chair according to claim 1.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The pipe chair of the present invention comprises: a seat plate having a predetermined shape; and four seats respectively provided at four corners at the bottom of the seat plate, each having one joint hole. It is composed of two steel pipes which correspond to each other and have the same inverted U-shape as a connecting piece and a foot device, and each steel pipe is formed by extending one horizontal bar and two ends of the horizontal bar downward by a predetermined length. The completed foot device with four feet is stably supported on the ground with four feet, and the two horizontal bars have four pivots corresponding to the joint holes of the four connecting pieces. The foot device having a perforated hole, the positioning device includes four positioning blocks, each including one lateral hole penetrating two sides thereof and one axial hole penetrating the top and bottom thereof. Communicates with the shaft hole, and the diameter of the circle corresponds to the pipe diameter of each foot. The pivot hole is provided so as to correspond to the pivot hole of the foot, and one pivoting means is penetrated through the foot and is later coupled to the joint hole of the coupling piece and positioned. Four positioning blocks.

As a result, the two steel pipes of the foot device can be stored in an overlapping manner so as to be opposed to each other, thereby reducing the occupied space and providing an advantageous effect for transportation and storage.

[0008]

【Example】

 As shown in FIG. 3, the pipe chair 20 of the present invention is a seat plate 21. In this embodiment, the pipe chair 20 is made of wood plywood and is a curved piece integrally formed with the backrest 22, but is made of plastic. It is also possible to use the above-mentioned sheet plate 21, four connecting pieces 23, iron thin pieces, and integrally form one joining hole 31 at the center by a punching press. A hole 32 is provided, and each connecting piece 23 passes through the hole 32 of the screw 33 and is screwed to four corners at the bottom of the sheet plate 21, and the joint hole 31 is used for pivotal connection. One connecting device 23, one foot device 24, and two corresponding steel pipes 41, 42 having the same substantially inverted U shape are formed. Each of the two steel pipes 41, 42 is one horizontal bar. 411, 421 and the side It is provided with two legs 412, 413, 422, 423 extending the two ends of the rods 411, 421 downward by a predetermined length, and a lower recess 414 is formed in the center of the horizontal bar 411 of one of the steel pipes 41. An upper recess 424 is formed in the center of a horizontal bar 421 of another steel pipe 42, and the lower recess 414 and the upper recess 424 are formed in a shape corresponding to the up and down directions. Sometimes, the upper recess 424 and the lower recess 414 of these two horizontal bars 411, 421 are installed in an intersecting manner, and the contact portion between the upper recess 424 and the lower recess 414 is a horizontal surface 415, 425 to increase the contact area. The upper recess 424 and the lower recess 414 are provided with screw holes 416 and 426, respectively, so that the two steel pipes 41 and And the combined leg device 24 is stably supported on the ground with four legs 412, 413, 422, 423, and the two horizontal bars 411, 421 The foot device 24 is provided with four pivotal contact holes 417 corresponding to the joint holes 31 of the four connecting pieces 23 at two ends thereof, and four positioning blocks 25, and a trapezoidal block body having a thick upper part and a thinner lower part. The upper end surface having a relatively large area and the connecting piece 23 are connected to each other, and each positioning block 25 has one horizontal hole 51 penetrating the front and rear sides and one shaft penetrating the upper and lower portions thereof. A hole 52 is provided, the lateral hole 51 and the axial hole 52 communicate with each other, and the circular diameter of the lateral hole 51 corresponds to the tube diameter of each leg 412, 413, 422, 423, and each leg 412, 413, 422 , 423 and the positioning block 25 The shaft holes 52 correspond to the pivot holes 417 provided in the feet 412, 413, 422, and 423, respectively, and one pivot means 53 has passed through the feet 412, 413, 422, and 423 of the positioning block 25. Later, the screw is completed by being aligned with the joining hole 31 of the connecting piece 23. According to this embodiment, the shaft hole 52 of the positioning block 25 is a fish-eye hole having a small hole diameter and a large hole diameter, and the pivotal connection means. 53 is provided with the above four positioning blocks 25, each of which is a recessed screw having a hexagonal concave hole.

The above-described pipe chair 20 according to the embodiment of the present invention can be distributed and packaged, and is assembled after being transported to an installation site or a consumer's house. Prior to its assembly, the sheet plate 21, the foot device 24, the four connecting pieces 23, the four positioning blocks 25, the screws 33 and the pivot means 53 are separately packaged, of which the sheet plate 21 is a relatively large one. The foot device 24, which is a volume, is composed of two steel pipes 41 and 42, and can be stored in a stacked and stacked manner so as to face each other. First, the volume of the four legs is changed from a three-dimensional form to a flat U-shape. By adopting the steel pipe configuration, the volume can be reduced to one-fourth of the above, which can reduce the occupied space and facilitate storage and transportation, and reduce the number of truck transportation. Is a major advantage of the present invention.

Further, the connecting structure between the foot device 24 and the seat plate 21 of the present invention is such that one positioning block 25 is provided on each foot 412, 413, 422, 423 of the foot device 24, and the pivotal connection is made. Since the means 53 is passed through the positioning block 25 and screwed into the connecting piece 23, and each positioning block 25 is used as a pivot point and as a support point, the gravity of the sheet plate 21 is averaged and It can be distributed to the feet 412, 413, 422, and 423. Each of the feet 412, 413, 422, and 423 can be very stably supported on the ground. It does not cause the phenomenon of non-uniformity of force. The positioning block 25 of the present invention has a strong structure, distributes and supports the receiving force, and has an effect of hardly causing deformation of the foot device 24, and can prolong the service life of the pipe chair. Is another excellent point.

[0011]

[Effect of the invention]

 The present invention completely solves the drawbacks of the well-known technology by combining a new structure with a special space form in the structure of the pipe chair, reducing the size of the space occupied by the foot device, and making it easier to transport and store. Achieving convenient advance functions and meeting the requirements for utility model registration.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a known pipe chair.

FIG. 2 is an exploded perspective view of another known pipe chair.

FIG. 3 is an exploded perspective view of one preferred embodiment of the pipe chair of the present invention.

FIG. 4 is a local sectional view of FIG. 3;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 21 Seat plate 22 Backrest 23 Joining piece 31 Joining hole 32 Hole 33 Screw 24 Foot device 41, 42 Steel pipe 411, 421 Horizontal bar 412, 413, 422,
423 Foot 414 Lower recess 424 Upper recess 415, 425 Horizontal surface 416, 426 Screw hole 43 Screw 417 Pivoting hole 25 Positioning block 51 Side hole 52 Shaft hole 53 Pivoting means

Claims (6)

[Utility model registration claims] 1. A sheet plate having a predetermined shape, four connecting pieces provided at four corners at the bottom of the sheet plate and each having one joint hole, a foot device, and corresponding and the same reverse. The steel device is composed of two U-shaped steel pipes, each steel pipe comprising one horizontal bar and two legs extending two ends of the horizontal bar downward by a predetermined length. The above foot device, comprising: four feet which are stably supported on the ground with the feet of the book and are provided with four pivotal holes corresponding to the joint holes of the four connecting pieces on the two horizontal bars. And each has one lateral hole penetrating its two sides and one axial hole penetrating the top and bottom thereof, the lateral hole communicates with the axial hole, and the circular diameter of the lateral hole is The shaft hole corresponds to the pivot hole of the foot corresponding to the tube diameter of each foot. One of the four positioning blocks, wherein one pivot means penetrates the positioning block and the foot and is then connected to and positioned in the joining hole of the connecting piece, comprising the above, so that the two steel pipes of the foot device face each other. A pipe chair characterized by being superimposed and storable to reduce the occupied space for convenient transportation and storage. 2. The pipe chair according to claim 1, wherein the foot device is formed by combining two corresponding and identical inverted U-shaped steel pipes in a crossed manner. 3. A lower recess is formed at the center of the horizontal bar of one steel pipe of the foot device, and an upper recess is formed at the center of the horizontal bar of the other steel pipe. 3. The pipe according to claim 2, wherein the two steel pipes are connected to each other, and the contact portions are formed in a horizontal plane, each having one screw hole, and one bolt connecting the two steel pipes. 4. Chair. 4. The joining piece is an iron plate piece, a joint hole at the center of the plate piece is provided with a female screw, a plurality of holes are provided around the joint hole, and a corresponding number of screws are attached to the joint piece. The pipe chair according to claim 1, wherein the pipe chair is screwed through a piece to a bottom portion of the seat plate. 5. The pipe according to claim 1, wherein the positioning block is a trapezoidal block having a large upper portion and a narrow lower portion, and an upper end surface having a relatively large area is joined to the coupling piece. Chair. 6. A shaft hole of the positioning block is a fish-eye hole having a small diameter at the top and a large diameter at a bottom, and the pivoting means is a recessed screw having a hexagonal concave hole. The pipe chair according to claim 1.