JPS6027845B2 - Seat fixing device for furniture chairs, car seats, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has an upper layer end surface portion and a lower layer end surface portion made of a semi-rigid elastic material such as vinyl chloride or polyethylene, which are configured to be easily aligned with each other and to prevent them from peeling and opening due to irregularities. This invention relates to a seat fixing device for furniture chairs, automobile seats, etc., provided with a hook-shaped portion.

Conventionally, when a seat such as a furniture chair or a car seat is stretched over these chairs or seats, the surface of the frame of the chair or seat is covered with a sheet, and the sheet is placed on the back side from around the frame. Either wrap the green part around the sheet and nail the periphery to the frame, or stitch the periphery of the sheet and thread the wire through the hole in the sewn part, pulling both ends of the wire together and twisting them together. Alternatively, a method was used in which a wire passed through the green pocket seam around the seat was stretched with copper and tensioned to fix it to the frame.

These conventional means of tensioning the seat to the seat frame have the common advantage of stably fixing the seat to the frame, but these methods of attachment require years of training, force, and time. However, it is not suitable for amateurs and is a difficult task, and sheet covering products made by skilled workers also have variations, which poses problems in terms of quality control.

The present invention aims to solve the above problems, and includes:
Providing outer, central, and inner protrusions in the perpendicular direction on the end surface of the sheet, forming an outer groove between the outer and center protrusions, and forming an inner groove between the center and inner protrusions; The central protrusion has a relatively large thickness and has rigidity,
The inner and outer protrusions are thinner than the center protrusion and have elasticity, and the center protrusion has a sloped surface on the outer surface of the tip, and the inside of the tip on the opposite side of the central protrusion has an inclined surface. On the side surface, an acute-angled step is formed that protrudes toward the inner groove at an acute angle with respect to the central protrusion and has an inclined surface at the entrance of the inner groove, and on the outer surface of the tip of the inner protrusion. An acute-angled step is formed that protrudes toward the inner groove at an acute angle with respect to the inner protrusion, and has a faceted surface at the closing part of the inner groove, and on the inner and outer surfaces of the tip of the outer protrusion. The tips of the outer protrusions are tapered by forming inclined surfaces, and the rear ends of these inclined surfaces are formed with acute-angled steps that protrude at an acute angle with respect to the outer protrusions. With the end faces of one and the other two sheets facing each other, the protrusion on the outside of one sheet enters the groove on the inside of the other sheet, and the protrusion on the center of one sheet into the outer groove of the other sheet, the outer protrusion of the other sheet enters the inner groove of one sheet, and the central protrusion of the other sheet enters the outer groove of one sheet. the outer protrusions of the other sheet to engage the stepped portions of the center protrusions and inner protrusions of one sheet, and the protrusions of the center protrusions and inner protrusions of the other sheet. A fixing device is provided that can easily join two sheets together by engaging the stepped portion of a protrusion on the outside of one sheet with the stepped portion, and can also connect and fix the two sheets so that they do not come apart due to irregularities. The purpose is to provide.

Other objects, configurations, and effects of the present invention will be explained with reference to the drawings.

1 and 1' are one sheet and the other sheet of semi-rigid material made of elastic thermoplastic synthetic resin.

These sheets have exactly the same shape and are extruded using the same extrusion machine. 2, 3, 4, and 2', 3', 4' are formed with outer grooves 5, 5' and inner grooves 6, 6' perpendicularly formed on the end surface of each sheet 1 and 1'. outer, central and inner ridges.

The central protrusions 3, 3' have a relatively large thickness so as to have rigidity, and the inner protrusions 4, 4' and the outer protrusions 2, 2' have elasticity. The thickness is smaller than that of the protrusions 3 and 3'. Slopes 7, 7' are formed on the outer surfaces of the tips of the central protrusions 3, 3', and slopes 7, 7' are formed on the inner surfaces of the tips opposite to these inclined surfaces 7, 7'. The closed portions 6a, 6a'' of the inner grooves 6, 6' protrude at an acute angle toward the inner grooves 6, 6', forming acute-angled step portions 9, 9' having round slopes 8, 8'. death,
The inner protrusions 4, 4' have inner protrusions 4, 4' on the outer surface of their tips.
4', protrudes toward the inner grooves 6, 6', and slopes 10, 1 are formed at the entrances 6a, 6'a of the inner grooves 6, 6'.
0' are formed, and sloped surfaces 12 are formed on the inner and outer surfaces of the tips of the outer protrusions 2, 2'.
, 12' and 13, 13' to form the outer protrusion 2,
2' is formed in a tapered shape, and the rear end portions of these inclined surfaces 12, 12' and 13, 13' are provided with acute-angled stepped portions that protrude at an acute angle with respect to the outer protrusions 2, 2'. 14,
14' and 15,15' are formed. central protrusion 3,
3' and the inner protrusions 4, 4' are formed approximately equal to the width between the stepped portions 14, 14' and 15, 15' of the outer protrusions 2, 2', and 3, 3' and outer protrusions 2, 2
The distance between the inner step portions 15 and 15' is the center protrusion 3,
They are formed at intervals slightly wider than the thickness of 3'. As can be seen from the foregoing, when the two sheets 1 and 1' are combined, the outer protrusions 2 and 2' are connected to the corresponding inner grooves 6 and 1'.
6', and the stepped portion 9' of the central protrusion 3' of the sheet 1' and the stepped portion 11' of the inner protrusion 4' are fitted with the stepped portion 15 of the outer protrusion 2 of the sheet 1. 14
The steps 15' and 14' of the outer protrusion 2' of the sheet 1' engage with the step 9 of the central protrusion 3 of the seat 1 and the step 11 of the inner protrusion 4. It turns out. If the seat is fixed to a member to be attached, such as a frame member, and the seat 1' is attached to the circumferential surface of the seat cover, the seat 1' is opposed to the seat 1 as shown in Fig. 1, and the seat 1' is pressed against the seat. , the inclined surface 1 at the tip of the protrusion 2' of the sheet 1'
2' and 13' are the inclined surfaces 8 and 1 of the protrusions 3 and 4 of the sheet 1.
0 and enters the groove 6.

As the protrusion 2' enters between the inclined surfaces 8 and 10, the tip of the protrusion 4 falls inward due to its elastic action. However, the tip of the protruding ridge 2' enters the groove 6, and the inclined surface 12'
, 13' is the stepped portion 9 of the protrusions 3 and 4! 1, the tip of the protrusion 4 returns to its original state due to its elastic action, and the stepped portions 15' and 14' overlap the stepped portions 9 and 10', respectively, and at the same time, the sheet 1 The inclined surfaces 12 and 13 at the tips of the protrusions 2 of the sheet 1' enter the grooves 6' between the inclined surfaces 8' and 10' of the protrusions 3' and 4' of the sheet 1', and the protrusions 2 of the sheet 1
When the inclined surfaces 12 and 13 of the sheet 1' fall below (inwardly) the steps 9' and 11' of the protrusions 3' and 4', the protrusions 4'
The tip of the sheet returns to its original state due to its elastic action, and the stepped portions 14 and 15 overlap the stepped portions 11' and 9', respectively, and the seat and 1' are joined together. the inclined surface 12,
13, 12', 13' and stepped portions 14, 15, 14', 15
Since the protrusions 2, 2' formed at `` have an anchor-like cross section, the closing portions 6 of the inner grooves 6, 6'' of the mating sheet
Step portions 9, 11 or 9', 1 provided at a, 6'a
1', and even if an external force is applied to the sheets 1, 1' in the vertical, horizontal or diagonal directions, the acute-angled step 9 or 11 and the acute-angled step 14 or 15 will continue to bite. Therefore, the central protrusions 3, 3' have rigidity,
Since an extremely large stress is required to disengage the acute-angled step, the protrusions 2, 3, 4 and the protrusions 2', 3', 4
The sheets 1 and 1' will not be separated and disassembled without being disengaged from each other.

Fig. 4 shows a case where the present invention is applied to join the lining sheet A and the automobile body B, and the sheet 1 attached to the side edge of the lining sheet A is attached to the inner surface of the automobile body B. It is a partial cross-sectional view of the state in which the

In Hakama Publication No. 49-34456, since one sheet and the other sheet have different shapes, it is not only impossible to manufacture both sheets using one mold, but also the protrusions of one sheet cannot be manufactured. The covered part is formed in a convex circular shape, and the concave inclined surface of the protrusion of the other sheet that engages with this convex part is formed in a concave circular shape so that it is in contact with the covered part. The ridges of both sheets each have a portion that engages with the other ridge, that is, an overlapping portion and a concave inclined surface, each formed on one side of the ridge.

Therefore, if opposite horizontal or vertical forces are applied to one sheet and the other sheet, the engagement force between the protrusions on one sheet and the other sheet will naturally be weak due to the shape of the protrusions, and the joining position will be incorrect. It has the drawback of being easily fluctuated, unstable, and easily coming off, and cannot be used in seat fixing devices for furniture chairs, automobile seats, etc., which require large tensile strength. In Japanese Utility Model Publication No. 49-21311, a bifurcated small bulge and a large bulge are formed on the end faces of one sheet and the other sheet, respectively, and the large bulges are brought into contact with each other. Since the outer peripheral surface of each bulge is engaged with a small bulge on the other seat, it can be used as a seat fixing device for chairs and seats where force is applied in the opposite direction to each seat. There is a drawback that it cannot be done. Jitsukisho 3
Publication No. 9-37172 discloses a synthetic resin in which a plurality of leg pieces are formed at U-shaped intervals on the lower surface of the head, each having a locking protrusion having a tapered surface on the outer lower end. Since the rivets are manufactured by rivets, in order to join the two sheets, it is necessary to cut out the rivets in each sheet, and when the two sheets joined with rivets are pulled with strong force in opposite directions, the pet holes are deformed. It has the disadvantage that it spreads and the rivets come out.

As described above, the central protrusion of the two sheets has a large thickness and is rigid, so that even if a force is applied to the two sheets to bring them together, the central protrusion will push against each other. They come together and stand still, and no longer approach each other.

Also, even if tensile forces act on two sheets in opposite directions, the acute-angled step on the outer protrusion of each sheet will overlap the acute-angled step on the center protrusion of the other sheet. The sharply angled stepped portions firmly bite into each other to prevent them from disintegrating unnecessarily, and the tips of the protrusions on the center, inner and outer sides of the two sheets have been provided with sloping surfaces, so the two sheets can be separated by simply pressing them together. It is possible to combine two sheets extremely easily, and it is possible to carry out sheet lining work over a wide area or sheet pasting work in a cramped space firmly, lightly and quickly, and it should be combined using a single extruder mold. It is possible to manufacture a joint structure of two sheets, which simplifies the manufacturing mold, and has other excellent effects that have not been seen in the past.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of the present invention in a combined state, FIGS. 2 and 3 are exploded longitudinal sectional side views of the same, and FIG. 4 is a partial sectional view of the lining sheet attached to the automobile body. . 1...One sheet, 1'...The other sheet, 2, 2'
...Outer protrusion, 3,3'...Central protrusion, 4,4
'... Inner protrusion, 5, 5'... Outer groove, 6, 6'... Inner groove, 6a, 6'a...
・Inner groove entrance part, 7, 7'... Slanted surface, 8
, 8'... Mirror slope, 9, 9'... Acute angle step, 10, 10'... forehead slope, 11, 11'...
...Acute-angled step, 12, 12'... Front slope, 13, 13'... Inclined surface, 14, 14'...
...Acute angle step, 15,15'...Acute angle step. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 Perpendicular to the end surfaces of the sheets 1, 1', outer protrusions 2, 2' have elasticity on the male side, and central protrusions 3, 3' have relatively large thickness and rigidity on the female side. The inner protrusions 4, 4' having elasticity are provided on the female side, and the outer protrusions 2,
2' and the central protrusions 3, 3' form outer grooves 5, 5', and the central protrusions 3, 3' and the inner protrusions 4, 4.
'Inner grooves 6, 6' are formed between the inner protrusions 4, 4'.
The outer protrusions 2, 2' have a smaller thickness than the central protrusions 3, 3', and sloped surfaces 7, 7' are formed on the outer surfaces of the tips of the central protrusions 3, 3'. On the inner surface of the tip opposite to the surfaces 7, 7', there are sloped surfaces 8, 8 which protrude toward the inner groove at an acute angle with respect to the central protrusion and are formed at the openings 6a, 6a' of the inner grooves 6, 6'. forming acute-angled step portions 9, 9' having a
On the outer surface of the tips of the inner protrusions 4, 4', there are inner protrusions 3,
forming acute-angled stepped portions 11, 11' that protrude toward the inner grooves 6, 6' at an acute angle with respect to 3' and have inclined surfaces at the openings 6a, 6a' of the inner grooves 6, 6'; Outer protrusions 2,2
’ have sloped surfaces 12, 13 and 12 on the inner and outer surfaces of the tip.
', 13' are respectively formed to form the tips of the outer protrusions 2, 2' into a tapered shape, and these inclined surfaces 12
, 13, 12', and 13' have acute-angled stepped portions 14, 15, and 14', 15 that protrude at an acute angle with respect to the outer protrusion.
The two sheets 1 and 1' having these structures are made so that their respective end surfaces face each other, and the outer protrusion 2 of one sheet 1 is connected to the other sheet 1'. The center protrusion 3 of one sheet 1 is inserted into the inner groove 6' of the other sheet 1', and the outer protrusion 2' of the other sheet 1' is inserted into the outer groove 5' of the other sheet 1'. the other sheet 1' and the central protrusion 3' enter the outer groove 5 of one sheet 1, and the central protrusion 3 of one sheet 1 and the inner protrusion 3' Steps 9 and 11 of the protrusion 4 are connected to the step 1 of the outer protrusion 2' of the other sheet 1'.
5' and 14', and the other sheet 1'
Steps 9' and 11' of the central protrusion 3' and the inner protrusion 4'
A seat fixing device for furniture chairs, automobile seats, etc., characterized in that two seats are coupled and fixed to each other by engaging the stepped portions 14 and 15 of the protrusion 2 on the outside of one seat 1. .