JP3112830U - Sheet support device - Google Patents

Abstract

The present invention provides a sheet support device that is easy to assemble, has a simple fixing structure to a lower surface of a back plate of a support frame, and does not require lateral openings for molding of the back plate.
The back plate 3 and the support frame 4 are fixed by upper coupling portions 321 and 331 and lower coupling portions 421 formed near the front and rear ends of the lower surface 31 of the back plate 3 and the upper surface of the support frame 4, respectively. 441 are coupled to each other in a direction opposite to each other in the vertical direction. The support frame 4 has a middle step portion 43 bent from a spring steel wire rod into a shape having a front end portion 431 and a bifurcated portion 432 extending rearward, and the front end portion 431 is clamped from the front. It has a front step portion 42 and a rear step portion 44 in which both rear end portions of the bifurcated portion 432 are clamped from the rear, and the lower coupling portions 421 and 441 are formed on upper surfaces 42A, 42A, 44A.
[Selection] Figure 2

Description

  The present invention relates to a seat support device that is attached to a lower surface of a seat and supports the seat from below.

  A generally known sheet support device 2 of this type is attached to the lower surface of the sheet 1 to support the sheet 1 from below as shown in FIG. 1 and is attached to the lower surface of the sheet 1 as a backing. A back plate 21, a support frame 22 installed below the back plate 21, and fixing means 23 (see 231, 232, 233, and 234) that fix the support frame 22 to the lower surface of the back plate 21 are provided. . Since the support frame 22 imparts cushioning properties to the seat 1 via the back plate 21, normally, as shown in the drawing, the front end portion 221 and the front end portion 221 extend leftward and rightward from the left and right, respectively. And bent into a spring structure having a bifurcated portion 222 adapted to form rear end portions 222a and 222a.

  Such a linear material made of a special material is difficult to make so as to have a structure to be connected to the back plate 21 by itself, so that two rear end portions 222a and 222a are formed on the lower surface of the back plate 21. The locking members 231 and 231 for locking the free end of the bifurcated portion 222, and the temporary end for temporarily fixing the front end 221 so as to be detachable after the two rear ends 222a and 222a are locked. Fixing members 232 and 233 and a fixing member 234 for further fixing the front end portion 221 after temporarily fixing and preventing the desorption are provided as the fixing means 23, whereby the support frame 22 is attached to the back side. It is fixed to the lower surface of the plate 21.

  However, in the sheet supporting apparatus having the structure as described above, the locking members 231 and 231 and the temporary fixing members 232 and 233 as the fixing means 23 must be provided on the lower surface of the back plate 21. As shown in the figure, the locking members 231 and 231 are formed integrally with the back plate 21 because the locking holes 2311 and 2311 for locking the free ends of the bifurcated portions 222 are lateral. It cannot be made, and since it is necessary to perform drilling processing after molding, there is a drawback that it takes much time to manufacture.

  Further, in the sheet supporting apparatus having the above-described structure, when the support frame 22 is fixed to the lower surface of the back plate 21, first, the free end portion of the bifurcated portion 222 is locked from the side by the locking members 231 and 231. The front end 221 is temporarily fixed by the temporary fixing members 232 and 233 while being inserted into the holes 2311 and 2311 and then locked thereto, and the fixing member 234 is fixed to the back plate 21 by screwing work, and the front end 221 is fixed. It requires a fixing step and is very complicated.

  Therefore, the present invention has been proposed in view of the above-described drawbacks, and a first object thereof is to provide a sheet support device that facilitates assembly work.

  It is a second object of the present invention to provide a sheet supporting device that has a simple fixing structure to the lower surface of the back plate and does not require a lateral opening for forming the back plate.

  In order to achieve the first object, the present invention provides a sheet supporting device for supporting the sheet from below by being attached to the lower surface of the sheet, and a back plate attached as a backing to the lower surface of the sheet And a support frame fixed to the lower surface of the back plate, and the fixing is performed by an upper coupling portion and a lower portion formed near the front and rear ends of the lower surface of the back plate and the upper surface of the support frame, respectively. Provided is a sheet support device having a basic structure in which the connecting portions are connected to each other in a direction opposite to each other in the vertical direction.

  Specifically, as the upper coupling portion, a first coupling portion and a second coupling portion are disposed near both front and rear ends of the lower surface of the back plate, and the lower coupling portion is an upper surface of the support frame. A third coupling portion and a fourth coupling portion are disposed near both front and rear ends of the first coupling portion, the first coupling portion and the third coupling portion, and the second coupling portion, respectively. The fourth coupling portion is coupled to each other in the direction opposite to the upper and lower phases.

  In order to achieve the second object, on the basis of the basic structure, the support frame includes a front end portion and a bifurcated portion extending from the front end portion to the left and right sides from the front end portion. A middle step portion bent into a shape having a flat sleeve-shaped front step portion that has been clamped from the front, and both rear end portions of the bifurcated portion from the rear. A flat sleeve-shaped rear stage portion, and the lower coupling portion is formed on the upper surface of each of the front stage portion and the rear stage portion.

  The seat support device of the present invention for mounting on a bicycle such as a normal two-wheeled vehicle or three-wheeled vehicle using the configuration for achieving the second object is further characterized in that the back plate has a tapered saddle shape. The support frame has a front stage, a middle stage, and a rear stage, and the front stage and the rear stage are two independent parts whose upper and lower sides substantially coincide with the front and rear stages of the back plate, respectively. It is preferable that the middle step portion has a pair of left and right spring levers connecting the front and rear step portions in the front-rear direction.

  The seat support device according to the configuration for achieving the first object includes an upper joint portion (the first joint portion and the second joint portion) formed on each of the lower surface of the back plate and the upper surface of the support frame. Part) and the lower joint part (the third joint part and the fourth joint part) can be joined to each other in the direction opposite to each other, so that the back plate and the support frame are directly overlapped and combined. Therefore, as compared with the conventional method, an effect of facilitating the assembly work can be obtained.

  The support frame in the configuration for achieving the second object is obtained by holding the front end portion and the rear end portion of the middle step portion in which the front step portion and the rear step portion are each made of spring steel wire from the front and rear, The front stage and the rear stage are two independent ones whose upper and lower sides are substantially the same as the front stage and the rear stage of the back plate, respectively, and the middle stage is a pair of left and right connecting the front stage and the rear stage in the front-rear direction. In the case of a spring lever, the lower coupling part is formed on the upper surface of each of the front stage part and the rear stage part so that the upper coupling part and the upper coupling part are coupled to each other in a direction opposite to each other in the vertical direction. It is possible to simplify the fixing of the support frame to the lower surface of the back plate and to eliminate the need for lateral openings for molding the back plate.

  Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

  With respect to this embodiment, a seat support device according to an embodiment of the present invention suitable for mounting on a bicycle seat such as a normal two-wheeled vehicle or tricycle will be described. FIG. 2 is an exploded perspective view of the embodiment. FIG. 3 is a top view of the support frame in the embodiment of FIG. FIG. 4 is a perspective view of the embodiment of FIG. 2 as viewed obliquely from the front. In the following description, parts having substantially the same functions and configurations are denoted by the same reference numerals, and details thereof are omitted.

  As shown in FIG. 2, the sheet supporting device is a sheet supporting device that is attached to the lower surface of the sheet and supports the sheet from below, and a back plate 3 that is attached to the lower surface of the sheet as a backing, The support frame 4 is fixed to the lower surface 31 of the back plate 3.

  The back plate 3 has a tapered saddle shape.

  The support frame 4 includes a front part 42, a middle part 43, and a rear part 44. The middle step portion 43 is bent from a spring steel wire into a shape having a front end portion 431 and bifurcated portions 432 extending rearward from the front end portion 431 to the left and right. The front step portion 42 has a flat sleeve shape in which the front end portion 431 is clamped from the front as an independent body. The rear stage portion 44 is a flat sleeve type in which both rear end portions of the bifurcated portion 432 are clamped from behind as an independent body. That is, the support frame 4 has a pair of left and right spring levers (i.e., a front step portion 42, a rear step portion 44, and a pair of left and right spring levers that extend between the front step portion 42 and the rear step portion 44 in the front-rear direction). , The portion of the bifurcated portion 432 in FIG. Further, the front stage part 42 and the rear stage part 44 are substantially the same in outline as the front stage part 32 and the rear stage part 33 of the back plate 3, respectively.

  In addition, the fixing between the back plate 3 and the support frame 4 is performed by upper coupling portions (321) formed near the front and rear ends of the lower surface 31 of the back plate 3 and the upper surface of the support frame 4 (see 42A and 44A). 331, 331) and the lower coupling portion (see 421, 441, 441) are coupled to each other in the opposite direction.

  The upper coupling portion refers to the first coupling portion 321 and the second coupling portions 331 and 331 respectively disposed on the lower surfaces 31A and 31B of the front stage portion 32 and the rear stage portion 33 of the back plate 3, and the lower coupling portion Means the third coupling portion 421 and the fourth coupling portions 441, 441 disposed on the upper surfaces 42A, 44A of the front stage portion 42 and the rear stage portion 44 of the support frame 4, respectively.

  The first coupling portion 321 and the second coupling portions 331 and 331 are all cylindrical projections with internal threads that protrude downward.

  The third coupling portion 421 and the fourth coupling portions 441 and 441 are all cylindrical projections that protrude upward, and whose upper ends are open above the support frame 4 and whose lower ends are open below the support frame 4. It is.

  The first coupling portion 321 is inserted into the third coupling portion 421, and the second coupling portions 331 and 331 are inserted into the fourth coupling portions 441 and 441 from top to bottom. Further, the first coupling portion 321 and the second coupling portion 331 are inserted into the lower surface of the support frame 4 from the lower openings 421A, 441A, 441A of the third coupling portion 421 and the fourth coupling portions 441, 441, respectively. The first and second screws 422, 442, and 442 are attached to the back plate 3 so as to be fitted to the respective female screws 331.

  In addition to the connecting portions, the lower plate 31 protrudes further downward on the lower surface 31 of the back plate 3 (here, the lower surface 31B of the rear stage portion 33), and the lower end is below the back plate 3 and the upper end is above the back plate 3. A first cylindrical auxiliary protrusion 332 is formed to open to the upper surface of the support frame 4, and a second threaded female screw projecting further upward on the upper surface of the support frame 4 (here, the upper surface 44A of the rear stage portion 44). A cylindrical auxiliary projection 443 is formed. The second cylindrical auxiliary protrusion 443 is inserted into the first cylindrical auxiliary protrusion 332 from the bottom to the top. In addition, the support frame 4 is fixed to the back plate 3 by being inserted into the upper surface of the back plate 3 from the upper opening 332A of the first cylindrical auxiliary projection 332 and screwed with the female screw of the second cylindrical auxiliary projection 443. Three screws 333 are attached.

  That is, since the screwed concavo-convex structure is provided between the lower surface 31 of the back plate 3 and the upper surface of the support frame 4 so as to be coupled to each other in the direction opposite to each other as described above, Fixing is simple and effective.

  Next, a modification of the embodiment will be described. FIG. 5 is an exploded perspective view of a modification in which the embodiment of FIG. 2 is further provided with a cushion sheet. FIG. 6 is a side view of a modification of FIG.

  As shown in FIGS. 5 and 6, in the above-described embodiment, the front step portion 42 and the rear step portion 44 of the support frame 4 are placed on the lower surfaces 31A and 31B of the front step portion 32 and the rear step portion 33 of the back plate 3 respectively. Is hit through. Since the cushion sheets 6 and 6 can absorb the shock together with the support frame 4, the cushioning effect is further improved and the ride comfort is improved as compared with the conventional structure that absorbs the shock only with the spring steel wire rod as the support frame 4. Moreover, the wear between the back plate 3 and the support frame 4 can be reduced.

  As mentioned above, although demonstrated based on embodiment, this invention is not limited to the said embodiment. For example, in the above-described embodiment, it is exemplified that each coupling portion is configured to have a screwed uneven structure, but even if only an uneven structure is used or an adhesive is used instead of screwing, the same as described above. It is only necessary to achieve a fixed effect. That is, various modifications and changes can be made without departing from the features and objects of the present invention.

  The seat support device of the present invention is easier and smoother to assemble than the conventional one, and the effect of improving the assemblage is obtained, and the support frame is easily fixed to the lower surface of the back plate. Thus, it is possible to eliminate the need for lateral openings for molding the back plate.

Explanatory drawing of the support apparatus of the sheet | seat of a prior art example. 1 is an exploded perspective view of an embodiment of a seat support device according to the present invention. The top view of the support frame in embodiment of FIG. The perspective view which looked at embodiment of FIG. 2 diagonally from the front. The disassembled perspective view of the modification provided with the cushion sheet further in the embodiment of FIG. The side view of the modification of FIG.

Explanation of symbols

  3 ... back plate, 31 ... lower surface (of back plate), 31A ... lower surface (of front step portion 32), 31B ... lower surface (of rear step portion 33), 32 ... front step portion (of back plate), 321 ... first coupling Part (upper coupling part), 33 ... rear stage part of (back plate), 331 ... second coupling part (upper coupling part), 332 ... first cylindrical auxiliary projection, 332A ... upper opening, 333 ... third Screws, 4 ... support frame, 42 ... front stage, 421 ... third coupling part (lower coupling part), 421A ... lower opening, 422 ... first screw, 42A ... upper surface (of front stage part 42), 43 ... middle stage 431 ... front end part, 432 ... bifurcated part, 44 ... rear stage part, 441 ... fourth coupling part (lower coupling part), 441A ... lower opening, 442 ... second screw, 443 ... second cylindrical shape Auxiliary protrusion, 44A ... upper surface (of rear stage 44), 6 ... cushion sheet.

Claims (8)

A seat support device attached to the lower surface of the seat to support the seat from below,
A back plate attached as a backing to the lower surface of the sheet, and a support frame fixed to the lower surface of the back plate,
In addition, the fixing is performed by connecting an upper coupling portion and a lower coupling portion formed near the front and rear ends of the lower surface of the back plate and the upper surface of the support frame, in a mutually opposite direction. A sheet supporting device characterized by comprising: A seat support device attached to the lower surface of the seat to support the seat from below,
A back plate attached as a backing to the lower surface of the sheet, and a support frame fixed to the lower surface of the back plate,
The fixing is performed by combining an upper coupling portion and a lower coupling portion, which are formed near the front and rear ends of the lower surface of the back plate and the upper surface of the support frame, in a direction opposite to each other in the vertical direction,
The support frame includes a middle step portion bent from a spring steel wire to have a front end portion and a bifurcated portion extending leftward and rightward from the front end portion. A flat sleeve-shaped front step portion that has been gripped from the front end, and a flat sleeve-shaped rear step portion that has both rear ends of the bifurcated portion gripped from the back as an independent body,
Further, the lower coupling part has a sheet formed on the upper surface of each of the front part and the rear part. A seat support device attached to the lower surface of the seat to support the seat from below,
A back plate attached as a backing to the lower surface of the sheet, and a support frame fixed to the lower surface of the back plate,
The fixing is performed by combining an upper coupling portion and a lower coupling portion, which are formed near the front and rear ends of the lower surface of the back plate and the upper surface of the support frame, in a direction opposite to each other in the vertical direction,
The back plate has a tapered saddle shape, and the support frame has a front stage portion, a middle stage portion, and a rear stage portion, and the front stage portion and the rear stage portion are front stage portions of the back plate, respectively. The seat support device is characterized in that the outer shape of the rear stage portion is substantially coincided with the upper and lower sides, and the middle stage portion has a pair of left and right spring levers connecting the front stage portion and the rear stage portion in the front-rear direction.   The seat support device according to claim 2 or 3, wherein the front stage part and the rear stage part of the support frame are respectively in contact with the lower surfaces of the front stage part and the rear stage part of the back plate via a cushion sheet. A seat support device attached to the lower surface of the seat to support the seat from below,
A back plate attached as a backing to the lower surface of the sheet, and a support frame fixed to the lower surface of the back plate,
A first coupling portion and a second coupling portion are arranged near both front and rear ends of the lower surface of the back plate,
A third coupling portion and a fourth coupling portion are disposed near both front and rear ends of the upper surface of the support frame, respectively.
In addition, the first coupling portion and the third coupling portion, and the second coupling portion and the fourth coupling portion are coupled to each other in a direction opposite to each other in the vertical direction. A sheet support device.   The sheet supporting device according to any one of claims 1 to 5, wherein the coupling is performed by a screwed uneven structure. The first and second coupling portions are all cylindrical projections with internal threads protruding downward,
The third and fourth coupling portions are all cylindrical projections that protrude upward and have an upper end that opens to the upper side of the support frame and a lower end that opens to the lower side of the support frame,
The first coupling part is inserted into the third coupling part, and the second coupling part is inserted into the fourth coupling part from top to bottom,
Also, the support frame is inserted into the lower surface of the support frame from the lower opening of each of the third and fourth coupling portions, and is screwed with the female screw of each of the first and second coupling portions, and the support frame is attached to the back plate. 7. The sheet supporting apparatus according to claim 6, wherein the first and second screws are fixed. A first cylindrical auxiliary protrusion is formed on the lower surface of the back plate, further projecting downward, and having a lower end opened to the lower side of the back plate and an upper end opened to the upper side of the back plate,
A second cylindrical auxiliary projection with a female thread protruding further upward is formed on the upper surface of the support frame;
The second cylindrical auxiliary protrusion is inserted into the first cylindrical auxiliary protrusion from the bottom to the top,
Further, the back plate is inserted into the upper surface of the first cylindrical auxiliary projection from the upper opening, and is screwed with the female screw of the second cylindrical auxiliary projection to fix the support frame to the back plate. The sheet supporting device according to claim 7, further comprising a screw.

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