JPS58109011A - Apparatus for attaching fixed frame and attaching arm of seat plate in chair - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to a device for attaching a fixed frame foot and a seat plate to a mounting arm in a fixed chair installed in a stadium or theater, etc., and its purpose is to The slight elasticity of the restoring spring holds the seat upright with respect to the backrest at the opening angle of the nut, and from this state the seat is rotated backwards (towards the backrest) and forward while applying the elasticity of the restoring spring. To minimize the load applied to the restoring spring when not in use and reduce fatigue of the spring. To attach the fixed frame and the seat plate mounting arm to withstand long-term use. The aim is to provide am.

An object of the present invention is to provide a fixed frame that can be attached to the top of the floor board so that the seat board will not be distorted even if the fixed frame is installed on a floor board with a slightly different installation surface. It is another object of the present invention to provide a mounting device for mounting a seat plate with a mounting arm.

Hereinafter, the present invention will be explained based on the embodiment shown in the drawings. (11 is a fixed frame erected on the floor board at an interval suitable for interposing a seat plate, and a mounting arm for a backrest is attached to the upper part of the fixed frame. (2; and an armrest (31) that protrudes horizontally forward are integrally provided. (4) are the backrest mounting arms (2;
1 KNii is attached to the backrest (51 is a fixed frame (as will be described later) (IIK is attached to the mounting arm 163)
, (61). The fixed frame (1) and the mounting arm (61) are connected as shown below.

In other words, the lower inner surface sK of the fixed frame (l) is an annular projection (7
1 is formed, and at the center of the annular projection (7) there is a central protrusion sa having a recess ms +91 for receiving a part of the steel ball (8), and the lower outer periphery 1oK is a rotary earth at a predetermined interval. A hole μ2 is provided at the central protrusion 5uolη and ph<deviation 9 position, and the annular protrusion (protrusion 111 provided on the inner periphery of 710)
An abutment piece a9 made of an elastic material is attached between the protrusion a4 provided on the central protrusion αG and the protrusion a4. Seat board (5
1t - The mounting arm (61 is a disc-shaped f1 part α having a slightly smaller diameter than the annular projection (7))
・The arm portion aη extending from the scissor base 1e, and the − of the base ae.
W6 and the upper part of the arm are continuous, and there is a seat plate (5) on the upper surface perpendicular to the base σS and the arm (ID).
The mounting is made from the horizontal part side and the fixed frame (11@) of the base part 1e is attached to the central protrusion 11Q.
A friend recess 9 is provided to receive the other part of the steel ball (8) which is partially fitted in the recess (9), and further the recess αl
The mounting arm (610) is located outward from the outer circumferential surface of the central protrusion ff1Q (l and inward from the inner circumferential surface of the annular protrusion (7)) so that the rotation range of the mounting arm (610) A pair of stoppers (2), (2) and an arcuate hole (Qυ) opposite the round hole Q3 are protruding from the fixed frame (1). The fixed frame of sae (on the opposite side to II, there is a hemispherical protrusion in the center,
Further, the peripheral edges -fitsK are each provided with outward pressing pieces (c). (2) is a restoration spring, and this ridge spring C24 has a diameter larger than the outer edge diameter of the circular or arcuate hole (211) and a coil shape with a smaller diameter than the base ae of the mounting arm (610). , and both ends C!4..Q41b extend outward at a predetermined interval t.(C) is a cover for the restoring spring, and the outer diameter of the spring matches that of the base 4. At the same time, a partially cut out inward lip ridge is provided on the periphery of the arc-shaped hole (211), which has a central hole with a larger diameter than the outer edge diameter, and the base α
・The pressing piece (c) is interposed. ＠ is a pressing piece, and a center hole of the cover 4 of the restoration spring (to) is attached to the middle upper circular surface of the main S@ that can come into contact with the outer side of the disc of the cover G of the spring for restoring the first song. @7 has a central protrusion (7) penetrating through the mounting arm (6; O base tte) of this central protrusion (g);
In the part facing the nine hemispherical protrusion opening, a hemispherical recess C11l that matches that of the hemispherical protrusion is provided, and the lower end of the main i1% (2) has an inward KL shape. At the same time, the annular projection (outside of 71 j1111thlK* digit [kt protrusion lllf1) is attached to the tip of the horizontal part (2).
4' is connected with a mounting part that has a bond insertion protrusion, and the horizontal W& (to) is connected to both ends of the restoring spring IC24.
k, (24b) is clamped so that a slight initial elasticity is generated in the restoring spring Q4 by K.

Furthermore, the pressing part (support) is provided with a semi-fixed frame (
A hole (to) that matches the hole α in 1) is bored. (
) is the hole QS5 of the fixed frame (1), the arcuate hole (21, inside of the restoring spring) of the base 1G, the center hole of the cover (c) of the restoring spring @, and the hole of the suppressing part (c). Connecting bolt %C1η that passes through the hole (G) in series is a washer, (to)
is a nut screwed onto the connecting bolt holder described in III.

However, the fixed frame (IIK setting is 9 Ia-like protrusion (71
The center protrusion in G (I K is 9 recesses (91 in the steel ball (8)) and the mounting arm (6+ T-%) is in good condition.
The recess a9 provided at the center sK of the disc-shaped base sue receives the steel ball (8), and the stoppers
7) and the central protruding sgiken, and the restoring springs (2) are located at both ends 111 thereof.
:%、C! Tsuruma: Place the base 1GK setting of the mounting arm (6) so that the good pressure piece (To) is located, cover it with the cover of the restoring spring (C), and place the 9th place in the center of the base plate. The central protrusion (to) of the suppression piece (2) on the bovine bulbar process (2)
The center hole of the restoration spring cover (2) is inserted through the hemispherical recess θB provided with the central protrusion CIJK, and the base sae
and the hemispherical protrusion (2).

At this time, the horizontal part 63f of the mounting part (to) of the suppression part (c)
: Both ends C of the restoring spring @! 4a, clamp it with CLOO and fit it into the protrusion 03' provided at one tip between the rotation stopper protrusions 011 provided on the outer periphery of the annular protrusion (71), and then insert the fixing frame (hole 113 of (Arc-shaped hole υ in the base of 6#, restoring spring (2)
After passing through the hole (to) of the cover (2) and the suppressing piece (2) of the W6% restoring spring example from the fixed 7 frame (1) side, the connecting pole CI' is inserted into the suppressing piece ( Tighten with the nut (to) using washer C3η on the (to) side. In this way, the shape of the structure when connected together is as shown in Fig. 8, and the steel R (8) has both ends attached to the recesses (91 and bMR attached) in the fixed frame (1). - It becomes a state where it is held between the concave portion 0 on the side of the frame 16).

And the installation is in a state of 9 years old and 8 years old.

As shown by the fifth column, the mounting arm 161 is in a state where the weight of the seat plate (51) attached to it causes the suppression piece (C) at its base to come into contact with one end 1 of the restoring spring (2). As shown by the solid line in FIG. From this state, by sitting on the seat plate (61) and lowering the mounting arm (61) forward, the mounting arm (61 base) is supported by the steel ball (81) on the negative side and supported by the above-mentioned suppression on the other side. It is supported by the hemispherical concave portion of the part and rotates around it in good condition (off view).In the case of b, the connecting bolt is attached to the mounting arm (arc-shaped hole 39 provided in the base of the button). Since it is located in a circle, it does not prevent the rotation of the retractable arm (6), and as the octopus rotates, the suppression piece (2) of the mounting arm (61) releases the restoring spring (2). one end sc!4b t- is moved counterclockwise in FIG. 5, and the other end S- of the restoring spring CJ41 is
The restoring spring (2) is in contact with one side of the horizontal side of the mounting part (2) of 2). Therefore, as the mounting arm (6) rotates, the restoring spring (2) sequentially applies a large biasing force to the mounting arm (61). Then, when the mounting arm (61 is in the horizontal position)
When the mounting arm (6) is mounted at its base a, the one stopper ■ that comes into contact with the abutment piece (151) prevents its rotation, and therefore the seat plate (51 is The state 1iIK is maintained as shown in the imaginary line (A).Next, when the user stands up from this state, the load on the seat plate a9 is released from K.
The mounting arm (61 is rotated clockwise in the OFF view by the biasing force stored in the restoring spring (2) to the state shown in FIG.
K returns. Also, rotate the mounting arm (6) in the opposite direction.
If the user rotates clockwise as shown in the figure, for example, the user stands up in that position and leans back with the calves of the lower legs (41
When the seat plate (5) is pressed to the side, the other end 04a of the restoring spring compensation is moved clockwise by the pressing piece (c) of the base haze, and the restoring spring (2) one end s
The mouse is the horizontal part (9) of the mounting part (2) of the pressing part (2).
Due to the fact that K is in contact with the other side, the restoring spring (2) sequentially applies a large biasing force to the mounting arm t61 as the mounting arm (61) rotates, and the mounting arm (6) As shown in the figure, the other stopper ■ provided at the base (leK) is connected to the abutment piece tI51 at the edge of the #1y vertical corridor.
By coming into contact with the (b) movement, the seat plate (51) is prevented.
is maintained in the state of the first imaginary s line (b), and in this case, it is effective when widening the passage formed at the junction between the front row 1j and the front row, which are made up of rows of chairs. When the seat plate (51) is released from this state by the calf of the lower leg, the mounting arm (61) returns to the state shown in FIG. 5 by the restoring spring (2).

Furthermore, in this invention, as mentioned above, the mounting arm (6) is provided on the center side of the base ae (the steel ball (8) fitted in the frame (19) is attached to the fixed 7 frame (1). central protrusion IB (
It is sandwiched between the lIKIk beam recess (9) and the base 1
The hemispherical protrusion (2) provided on the other side of the center of t(1
In the configuration that matches the base tte and is installed in good condition, the depth t of the recess I of the base tte and the recess (9) of the fixed frame is smaller than the radius of the steel ball (8), and the annular protrusion (7
1 and the side surface of the base ae of the mounting arm 61. According to this structure, the arm 161 is attached to the fixed frame (
This means that K can be applied not only in the vertical direction with respect to IIK but also partially in the horizontal direction perpendicular to IIK. i.e. mounting arm +6
1 is in a state where it can be excited along the steel balls 1810 and 1IIK.

Therefore, the fixed frames (1) should be erected at intervals suitable for interposition of the Kli plates above the floor board. Even if the size is slightly different.

Each fixed frame (IIK attached mounting arm 161
be able to rotate 4 times in the horizontal direction relative to the fixed frame (IIK). It is something that can be installed.

This invention has been made 111 times like Ugegami.

In an inconvenient situation where the seat plate is held at the required opening angle with the backrest, it is sufficient that the restoring spring has the extremely weak elasticity necessary to stop the tube holder against the load 3 of the seat plate itself. ,
In other words, the initial elasticity of the restoring spring in the unused state 11 is very small. The way it is used is extremely rational, and it prevents the deterioration of the springs and has excellent durability.The t-seat plate can be used not only in the prone position, which increases production, but also in the unused state, and even in the backrest position. Since the chairs can be tilted, by installing the chairs in series, it is possible to widen the passageway formed between the front row 1 and the back row while allowing the user to stand up from his or her seat. It has the advantage of making it easier to pass through the passage.

Furthermore, in this invention, the mounting arm itself is configured to be able to rotate in the horizontal direction perpendicular to the fixed frame, so that even if the installation surface on which the fixed frame is erected is slightly distorted, the seat plate can be rotated. 1 without causing unnecessary distortion to
This has the advantage that the seat plate can be reliably mounted on the pair of mounting arms.

[Brief explanation of the drawing]

The drawings show examples, and FIG. 1 is a perspective view of the metal body of a chair in good condition with the seat plate installed using the mounting device according to the present invention, and FIG.
The figure is an exploded perspective view of the present invention, Figures 3 and 4 are perspective views of the main parts showing partially assembled state I, Figures 5 to 7 are partial views showing the operating state a, and O8 shows the main parts. FIG. In the figure, (1) is the fixed frame, (41 is the backrest, (5I is the seat plate, (6 width mounting arm % (7) is the protrusion - 1 (81 is the steel ball % (9). Concave S% a1 is a rotation stopper projection, a is a contact piece, (2
) is the base, O is the stopper, (2a is the hemispherical projection, Q4 is the suppression piece, (2) is the suppression piece, cIυ is the hemispherical recess, Oa is the horizontal part, C (l is the It is a protrusion. Patent applicant: Kokuso Co., Ltd. American Seating

Claims (1)

[Scope of Claims] (1) A central protrusion located at the center of the %@-shaped central protrusion and the *@-shaped protrusion on the side surface and having a concave portion on the end surface, and between the inner surface of the annular protrusion and the outer surface of the central protrusion. (1) An identification frame comprising a fixed abutment piece and a pair of anti-rotation protrusions protruding from a part of the outer periphery of the annular protrusion, and a back plate, and a base S; At the center of the side surface thereof, there is provided a recess for holding the steel ball between the recess and a stopper that is interposed within the ll-shaped protrusion and contacts the abutment piece to restrict the rotation range. On the other side, a coil-shaped mounting surface is provided for attaching a seat plate having a hemispherical protrusion and a protrusion piece bent at a part of the periphery. a restoring spring with both ends thereof extending outward such that the protrusion is located therebetween, and a hemispherical recess into which the inner S of the restoring spring is inserted and aligned with the hemispherical protrusion of the mounting arm. The outer periphery of the ISK structure is provided in the inner 11 and has a horizontal portion extending inwardly that is held by both ends of the restoring spring, and a pressing piece that is interposed between the projecting pieces of the fixed frame at the tip thereof. A mounting arm and a restoring spring are interposed between the fixed arm and the pressing piece, and
A device for attaching a fixed frame to a seat plate of a chair, characterized in that the attaching arm is connected to the fixed arm and the pressing piece so that they can rotate. (2) Claim IPIg in which the contact piece is made of an elastic material
A device for attaching the fixed frame and the seat plate attachment arm in the chair according to item 1. (On the 3111 plane, -sK is fixed between the annular protrusion, the central protrusion located at the center of the annular protrusion and having an r!!J portion on the end surface, and the circular surface of the annular protrusion and the outer surface of the central protrusion. *,
an identification frame provided with an abutment piece and an outer periphery of the annular protrusion 1 [a pair of protruding anti-rotation protrusions and a back plate; , a recess for holding the steel ball between the recess and the recess described in IIJ, and a stopper that is interposed in the annular projection and comes into contact with the abutment piece to restrict the rotation range, and also has a stopper on the other @ surface. , a mounting arm with a hole for attaching a seat plate having a hemispherical projection provided at a position corresponding to the recess and a nine-protrusion piece bent at a part of the periphery;
a restoring spring having a coil shape and having both ends thereof extending outward such that the protrusion is located therebetween; and a hemisphere that is inserted through the restoring spring and mates with the hemispherical projection of the mounting arm. A horizontal part having a shaped recessed part on the inner surface and extending inwardly on a part of the outer periphery is held by both ends of the restoring spring and is interposed at the tip between the projecting pieces of the fixed frame. between the fixed arm and the suppressing piece, a required gap is maintained between the annular protrusion of the fixed frame and one side of the mounting arm; 1. The mounting arm and the restoring spring are interposed so that the mounting arm can rotate along the circumferential surface of the steel ball between the fixed arm and the pressing piece.
A mounting device for a fixed frame and a seat plate mounting arm in a chair, characterized in that these are connected. (4) A device for attaching the fixed frame foot and the seat plate to the attachment arm in a chair according to claim 3, wherein the abutment piece is made of an elastic material.