JP3612461B2 - Cushion structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cushion structure for use in a seat cushion, a seat back, a seat cushion, a seat frame constituting the seat back, and the like.
[0002]
[Prior art]
As one type of cushion structure, as proposed in Japanese Patent Application Laid-Open No. 11-290153, each frame portion has a rectangular frame shape and each frame portion is wound on each frame portion of the frame. A cushion structure comprising a net fixed to a frame and stretched on the same frame is known.
[0003]
The cushion structure employs a rigid frame made of metal or the like as a frame, and exhibits cushioning performance using the elastic force of the net. Accordingly, it is possible to construct a cushion structure that has a simple structure and is rich in cushioning properties with less rigidity and bottoming feeling compared to a cushion structure in which a spring structure or a bottom plate is attached to a rigid frame. There is an advantage.
[0004]
[Problems to be solved by the invention]
By the way, in the cushion structure, the net is stretched around the rigid frame by winding each terminal of the net on each frame portion of the rigid frame and fixing it to the frame portion. Depends only on the resilience of the net, resulting in poor cushioning, and it is difficult to stretch the net in a uniform tension state, resulting in locally different cushioning performance. become.
[0005]
Accordingly, an object of the present invention is to provide a cushion structure that is rich in cushion performance and does not feel uncomfortable locally in this type of cushion structure.
[0006]
[Means for Solving the Problems]
The present invention relates to a cushion structure, the cushion structure according to the present invention is a cushion structure formed by fixing and stretching each end of a net on each frame portion of a rectangular frame-shaped frame, The frame is a composite frame comprising a rectangular frame-like elastic frame and a square frame-like rigid frame embedded in the same elastic frame, and the net is wound around each frame portion of the composite frame. constituting the composite frame state is fixed to the frame portion of said rigid frame and is characterized in the Turkey it has been stretched on the combined frame.
[0007]
In the cushion structure according to the present invention, a net formed by fixing a plate-like fixing member to each end of each of the four sides is adopted as the net, and each of the fixing members constitutes the composite frame. By fixing to each frame part of the rigid frame, the net can be stretched on the composite frame in a tensioned state.
[0008]
The cushion structure according to the present invention can be suitably used as a seat cushion or a seat back which is a seating portion or a backrest portion of a seat, and as a cushion frame constituting the seat cushion or the seat back.
[0009]
[Operation and effect of the invention]
In the cushion structure according to the present invention, a frame of a composite structure (composite frame) composed of a rigid frame embedded in the same frame as the elastic frame is adopted as the frame, and each end on the four sides of the net is connected to the elastic frame. Cushion performance of the cushion structure is exerted by adding the resilient force of the elastic frame to the resilient force of the net because it is wound on each frame and fixed to each frame part of the rigid frame. become. For this reason, the cushion structure according to the present invention exhibits a high cushioning property and is rich in flexibility as compared with the conventional cushion structure of this type.
[0010]
Further, in the cushion structure according to the present invention, as described above, each end of the net is fixed to each frame portion of the rigid frame with each frame portion of the elastic frame interposed therebetween. The difference in the local tension of the net is corrected to keep the net in a uniform tension state as a whole. For this reason, in the said cushion structure, there is no local discomfort in cushion performance.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 and FIG. 2 show an example of a cushion structure according to the present invention. FIG. 1 is a perspective view of the cushion structure 10 partially cut from the back side, and FIG. FIG. 3 is a plan view seen from the back side of the structure 10. The cushion structure 10 includes a sponge-shaped elastic frame 11 having a rectangular frame shape, a metal-made rectangular frame-shaped rigid frame 12, and a net 13 formed by weaving a super-strong yarn such as polyester in a net shape. Yes.
[0012]
In the state in which the elastic frame 11 constitutes the cushion structure 10, as shown in FIGS. 1, 2, 13, and 14, the elastic frame 11 has a square frame shape with a circular cross section. As shown in FIG. 12, the state before the configuration is a semi-circular cross section. As shown in FIGS. 1 and 3, the rigid frame 12 has a rectangular frame shape with an L-shaped cross section. The frame-like standing portion 12 a is embedded in the elastic frame 11 and integrated, 12b is exposed in a state of being in contact with the flat portion of the elastic frame 11.
[0013]
The net 13 has a square shape as shown in FIGS. 1, 2, and 4, and a mounting plate 14 as a mounting member is fixed to the center of each terminal. Each mounting plate 14 is fixed to each end of the net 13 made of synthetic fiber yarn using a thermoplastic synthetic resin as an adhesive. For fixing each mounting plate 14, for example, polyester synthetic resin powder is used as an adhesive, and the mounting plate 14 is brought into contact with the synthetic resin powder while being heated to about 260 ° C. to attach a large amount of synthetic resin powder. In the molten state on the plate 14, the mounting plate 14 is placed on the end of the net 13 and pressed and solidified by cooling while the molten state is maintained. Thereby, each attachment plate 14 is firmly fixed to the central portion of each end of the net 13.
[0014]
Each end of the net 13 to which each mounting plate 14 is fixed is wound on each frame portion 11a of the elastic frame 11, and this mounting state is maintained, and each mounting plate 14 is fixed to each rigid frame by each bolt 15. It is fixed on 12 plane parts 12b. In this state, the net 13 is stretched in a predetermined tension state on a composite frame including the elastic frame 11 and the rigid frame 12 in a state where each frame portion 11a of the elastic frame 11 is compressed into a circular cross section.
[0015]
In the cushion structure 10 having such a configuration, the net 13 is positioned on the surface side of the composite frame composed of the elastic frame 11 and the rigid frame 12, and each terminal is wound on each frame portion 11a of the elastic frame 11, The composite frame is fixed to the flat surface portion 12b of the rigid frame 12 on the back surface side, and the cushion performance is exerted by adding the elastic force of the elastic frame 11 to the elastic force of the net 13. Become. For this reason, the cushion structure 10 exhibits a high cushioning property and is rich in flexibility as compared with a conventional cushion structure of this type.
[0016]
In the cushion structure 10, each end of the net 13 is fixed to the flat surface portion 12 b of the rigid frame 12 with each frame portion 11 a of the elastic frame 11 interposed therebetween. The difference in 13 local tensions is corrected to keep the net 13 in a uniform tension state as a whole. For this reason, the cushion structure 10 has no local discomfort in cushion performance.
[0017]
Therefore, the cushion structure 10 can be used as it is as a seat cushion that is a seating portion of a seat, as a seatback that is a backrest portion, and also as a cushion frame that constitutes a seat cushion or a seatback. it can. The said cushion structure 10 can be manufactured with the manufacturing method which consists of the process shown in FIGS. 11-14 using the manufacturing apparatus 20 shown in FIG.5, FIG.6 and FIG.10.
[0018]
The manufacturing apparatus 20 includes a support base 21, a pressing base 22 provided on the inner peripheral side of the support base 21, a gripping mechanism 23, and a pressing mechanism 24. The gripping mechanism 23 is on the support base 21. A total of eight pairs are arranged on the left side edge, a pair on the right side edge, a pair on the front side edge, and a pair on the rear side edge. Further, the pressing mechanisms 24 are arranged to face each other at the four corners on the support base 21.
[0019]
As shown in FIGS. 6 to 9, the gripping mechanism 23 includes a support bracket 23a, a grip lever 23b, an operation lever 23c, and a connecting arm 23d. The grip lever 23b is supported by the front lower portion of the support bracket 23a at its rear lower end so as to be rotatable in the vertical direction. The operation lever 23c is connected at its front end portion to the upper rear end portion of the grip lever 23b so as to be rotatable in the vertical direction. The connecting arm 23d has a rear end portion supported by the rear portion of the support bracket 23a so as to be pivotable in the vertical direction, and a front end portion is coupled to an intermediate portion of the operation lever 23c so as to be pivotable in the vertical direction. The gripping mechanism 23 is disposed at a predetermined position on the support base 21 by attaching the support bracket 23 a on the support base 21.
[0020]
In the gripping mechanism 23, when not operated, the operation lever 23c is moved up as shown in FIG. 7, and the gripping lever 23b is in the upward movement state. When the operating lever 23c is rotated downward in this state, the operating lever 23c rotates in the clockwise direction around the connection point with the connecting arm 23d, and the gripping lever 23b rotates around the connection point in the illustrated counterclockwise direction. The grip lever 23b is in a horizontal state as shown in FIGS. In a state where the gripping mechanism 23 is disposed on the support base 21, the gripping lever 23 b is positioned so as to press on the pressing base 22 during operation.
[0021]
As shown in FIG. 6, the pressing mechanism 24 operates similarly to the gripping mechanism 23 with the same configuration except that the pressing lever 24b is provided in place of the gripping lever 23b. That is, the pressing mechanism 24 includes a support bracket 24a, a push lever 24b, an operation lever 24c, and a connecting arm 24d. By operating the operating lever 24c to rotate downward, the operating lever 24c is connected to the connecting arm 24d. And the push lever 24b is turned around the connection point to be in a horizontal state. When the push mechanism 24 is disposed on the support base 21, the push lever 24 b is positioned inside the press base 22 during operation.
[0022]
FIGS. 11-14 has shown the process of manufacturing the cushion structure 10 based on this invention, and FIG. 10 has shown the manufacturing apparatus 20 in a non-operation state. The method of manufacturing the cushion structure 10 includes a first step of placing the net 13 on the support base 21 and supporting it in a planar manner (see FIG. 11), and placing the composite frame on the supported net 13. 2nd process (refer FIG. 12), the 3rd process (refer FIG. 13) which presses the mounted composite frame and winds each terminal of the net | network 13 on each frame part 11a of the elastic frame 11 which comprises the frame. ) And a fourth step (see FIG. 14) for fixing the fixing plate 14 of each terminal wound on each frame portion 11 a of the elastic frame 11 to the flat surface portion 12 b of the rigid frame 12.
[0023]
When the cushion structure 10 is manufactured, an anti-slip rubber plate 23e is attached to the tip of the grip lever 23b of each gripping mechanism 23 constituting the manufacturing apparatus 20 as shown in FIG. 20 is set to the non-actuated state as shown in FIG.
[0024]
In the manufacturing apparatus 20, in the first step, the net 13 is placed on the pressing table 22, the operation levers 23 c of the gripping mechanisms 23 are sequentially rotated, and the distal end portion (rubber plate 23 e) of the gripping levers 23 b is operated. ) Is brought into contact with the mounting plate 14 on the net 13, and each end of the net 13 is gripped with the pressing base 22 as shown in FIG. As a result, the net 13 is supported on the pressing table 22 at eight locations of the terminal.
[0025]
In the second step, a composite frame composed of the elastic frame 11 and the rigid frame 12 is placed on the net 13 supported on the pressing table 22 as shown in FIG. By rotating the operation lever 24b, the pressing lever 24b is brought into contact with the flat surface portion 12b of the rigid frame 12, and the composite frame is pushed downward against the net 13 as shown in FIG. Thereby, each terminal of the net 13 is wound on the frame portion 11a while compressing each frame portion 11a of the elastic frame 11 into a circular shape, and the net 13 exhibits a predetermined tension state. In the operation of each pressing mechanism 24, it is preferable to operate each pressing mechanism 24 facing each other.
[0026]
In the fourth step, the operating lever 23b of the gripping mechanism 23 is rotated and returned to release the gripping state of the net 13. When the terminal is released, each time the terminal is released, the mounting plate 14 on the terminal is placed on the flat surface 12b of the rigid frame 12, and the mounting plate 14 is tightened with bolts 15 as shown in FIG. Fix it. The operation of releasing the terminal of the net 13 by the gripping mechanism 23 is preferably performed for each gripping mechanism 23 facing each other, and the fixing operation to the rigid frame 12 is preferably performed in the order of the released terminals.
[0027]
Through the above-described steps, the cushion structure 10 in which the net 13 is stretched with a predetermined tension on the surface side of the elastic frame 11 is manufactured, and the cushion structure 10 is elastic to the elastic force of the net 13. High repellency, high flexibility, and cushioning without local discomfort.
[Brief description of the drawings]
FIG. 1 is a partially longitudinal perspective view of a cushion structure according to an example of the present invention as seen from the back side.
FIG. 2 is a plan view seen from the back side of the cushion structure.
FIG. 3 is a partially longitudinal perspective view of a rigid frame constituting the cushion structure.
FIG. 4 is a partially omitted perspective view seen from the surface side of the net constituting the cushion structure.
FIG. 5 is a plan view of a manufacturing apparatus for manufacturing the cushion structure.
6 is a longitudinal sectional view taken along line 6-6 of FIG. 5 in the same manufacturing apparatus.
FIG. 7 is a side view of a gripping mechanism constituting the manufacturing apparatus in a non-operating state.
FIG. 8 is a side view showing an operating state of the gripping mechanism.
FIG. 9 is a plan view of an operating state of the gripping mechanism.
FIG. 10 is a schematic explanatory view showing a state immediately before use of the manufacturing apparatus.
FIG. 11 is a schematic explanatory view showing an operating state of the manufacturing apparatus in a first step of manufacturing the cushion structure.
FIG. 12 is a schematic explanatory view showing an operating state of the manufacturing apparatus in a second step of manufacturing the cushion structure.
FIG. 13 is a schematic explanatory view showing an operating state of the manufacturing apparatus in a third step of manufacturing the cushion structure.
FIG. 14 is a schematic explanatory view showing an operating state of the manufacturing apparatus in a fourth step of manufacturing the cushion structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Cushion structure, 11 ... Elastic frame, 11a ... Frame part, 12 ... Rigid frame, 12a ... Standing part, 12b ... Plane part, 13 ... Net, 14 ... Mounting plate, 15 ... Bolt, 20 ... Manufacturing apparatus, 21 DESCRIPTION OF SYMBOLS ... Support stand, 22 ... Press stand, 23 ... Grip mechanism, 23a ... Support bracket, 23b ... Grip lever, 23c ... Operation lever, 23d ... Connection arm, 24 ... Press mechanism, 24a ... Support bracket, 24b ... Push lever, 24c ... operating lever, 24d ... connecting arm, 24e ... rubber plate.

Claims (4)

A cushion structure formed by fixing and stretching each end of a net on each frame portion of a rectangular frame-shaped frame, and the frame is embedded in the same elastic frame as the rectangular frame-shaped elastic frame The net is fixed to each frame portion of the rigid frame constituting the composite frame in a state where each terminal is wound on each frame portion of the composite frame. A cushion structure characterized by being stretched on the composite frame . 2. The cushion structure according to claim 1, wherein the net includes plate-like fixing members at the respective ends of the four sides, and the fixing members are fixed to the frame portions of the rigid frame constituting the composite frame. By doing so, the said net | network is tensioned on the said composite frame , The cushion structure characterized by the above-mentioned. The cushion structure according to claim 1 or 2, wherein the cushion structure is a seat cushion or a seat back that is a seating portion or a backrest portion of a seat. The cushion structure according to claim 1 or 2 is a cushion frame constituting a seat cushion or a seat back which is a seating portion or a backrest portion of a seat.

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