JP4551918B2 - Chair - Google Patents

Description

  The present invention mainly relates to a structure of a chair installed in a game arcade.

For example, in a chair installed in a pachinko amusement hall, as shown in Patent Document 1 below, the entire chair is slidably supported back and forth, and is urged forward by a coil spring so that its rear passage is not in use. In the related art, it has been known to be configured so as to be as wide as possible.
In addition, the chair backrest structure shown in Patent Document 2 below is supported so that the back frame a can be tilted backward with a support shaft j provided on the seat base b as a fulcrum, as shown in FIG. The lower portion c of the back plate is fixed to the upper portion of the back frame, and a lower end portion of a control link e extending upward by providing a connection point d on the back frame is pivoted to the connection point d, and an upper portion f of the back plate Like an adjusting screw that can be refracted in the front-rear direction with respect to the lower part c, and that the upper part f is connected to the upper end of the control link e by connecting means g to change the distance between the back frame a and the control link e. The displacement means h was provided.
JP 2004-180783 A JP 2004-434 A Japanese Patent Laid-Open No. 10-179314 Japanese National Patent Publication No. 9-503144

By the way, the chair backrest structure shown in the above-mentioned Patent Document 2 is such that when the inclination angle of the back frame a is adjusted, the lower part c and the upper part f of the back plate move together in the front-rear direction. When installed in a game hall, there is a problem that if there is a player who tilts the back plate backward, it will protrude greatly into the rear passage and easily obstruct traffic. In addition, when only the lower part c is to be adjusted, the position of the upper part f needs to be readjusted by the displacement means h, and the request to adjust the position of the lower part c without changing the upper part f is not met. It is difficult and difficult to adjust to this state, and there is a problem that it is not easy to use.
Further, the chair shown in Patent Document 3 also has the same problem as the chair shown in Patent Document 2 because of its structure.
On the other hand, Patent Document 4 shows a back split type chair in which a back plate formed flexibly is divided into an upper ribcage portion and a lower waist portion, and each is independently supported on a seat plate portion by a support device. However, as shown in FIG. 5 of Patent Document 4, this back-divided chair has a structure in which the upper ribcage portion and the lower waist portion are both tilted backward when the seat plate portion is tilted backward. As a result, there is still a problem that it easily protrudes into the rear passage.

  In addition, players who have been playing for a long time occasionally have a desire to bend their backs and bend their backs, but with conventional chairs, it is possible to respond to those requests sufficiently for the reasons described above. could not.

The chair according to the present invention is intended to solve the above-mentioned problem, and is formed in a substantially L-shaped side surface, the lower part thereof is formed in a bifurcated shape, and the bifurcated tip part is pivoted on both sides of the support base. A first back frame supported so as to be able to tilt backward by wearing, a front edge portion pivotally mounted on the support base so as to be movable in the front-rear direction, and a rear edge portion near the lower end of the first back frame; More than the first back frame, a seat plate support plate pivotally attached to the rear part, a thorax support member pivotally attached to the upper end of the first back frame so as to allow vertical sliding, and A short side surface is formed in an approximately L shape, and its lower end is pivotally attached to the rear projecting portion of the support base, so that it stands between the two forks of the first back frame and tilts backward independently of the first back frame. When the second back frame supported and the second back frame are in a standing state It consists of a lumbar support member provided on the top front of the second back frame so as to project forwardly in the upper portion of the seat plate support plate, and a lower portion of the upper and thoracic support member of the second back frame A first attachment that is coupled via a coupling shaft and urges the first back frame to stand up in conjunction with the forward movement of the seat plate support plate between the support base and the seat plate support plate. And a second urging means for urging the second back frame to stand between the rear projecting portion of the support base and the second back frame.
According to the present invention, in the chair, a lock mechanism for fixing the second back frame in an upright state is provided.

  The user can relax, and even when installed in the amusement hall, the back frame does not protrude greatly in the rear passage, and it is difficult to block traffic. In addition, it is easy to use because it can be easily set to the desired state.

  1 is a perspective view of a chair according to the present invention, FIG. 2 is a longitudinal sectional side view of an essential part thereof, and FIG. 3 is a sectional view taken along line XX of FIG. In the chair shown in this embodiment, a slide mechanism 2 is provided at the upper end portion of a support column 1 in which a gas spring is provided so as to be extendable and a support base 3 is fixed on the slide mechanism. The slide mechanism 2 has a structure shown in the above-mentioned Patent Document 1, and a support base 3 is supported by the slide mechanism 2 so as to be slidable back and forth, and the entire chair is slid back and forth. Further, since the support base 3 is urged forward by a coil spring provided in the slide mechanism, the entire chair slides forward due to the elasticity of the coil spring when not in use, and thereby the rear passage is always open. Widely secured.

  As shown also in FIG. 4, the 1st back frame 10 is formed in the side surface substantially L-shape, and the lower part is formed in the forked shape. Then, a shaft support fitting 10a is fixed to the lower end portion of the first back frame 10 with a screw 10c, and the support shaft 11 is provided on both side portions of the support base 3 in bearing holes 10b formed in the shaft support fitting 10a. The first back frame 10 is supported so that it can be tilted backward with the support shaft 11 as a fulcrum. In order to limit the tilting angle of the first back frame 10, small protrusions 12 protruding from both sides of the support base 3 are loosely fitted in arcuate holes 13 formed in the shaft support 10 a. Therefore, the first back frame 10 can be inclined backward by about 12 degrees from the vertical standing state shown in FIG. 3 as shown in FIGS.

  Reference numeral 15 denotes a seat plate, and 16 denotes a seat plate support plate fixed to the back surface of the seat plate. As shown in FIG. 3, the seat plate support plate 16 has a support shaft 17 inserted through the front edge portion, and the support shaft 17 is formed in the front-rear direction formed on both sides of the front edge portion of the support base 3. A first urging means for elastically pressing the support shaft 17 forward on the support base 3 while supporting the seat plate support plate 16 so as to be movable in the front-rear direction by loosely fitting into the long small hole 4. Is provided. That is, the spring seat 5 is fixed on the support base 3, one end of the coiled spring 6 is fixed to the spring seat 5, and the other end of the spring is connected to the support shaft 17 via the connecting body 7. The support shaft 17 is elastically pressed forward by setting the spring in a compressed state. Further, the support shaft 18 is inserted into the rear edge portion of the seat plate support plate 16, and the support shaft 18 is inserted into a bearing hole 10d formed in the shaft support bracket 10a. The first back frame 10 is supported by the support shaft 18 in the vicinity of the end and in the rear part. For this reason, when the seat plate support plate 16 moves forward by the bias of the spring 6, the first back frame 10 can stand up in conjunction with the movement. That is, by providing the first urging means composed of the spring 6, the first back frame 10 stands up in conjunction with the seat plate support plate 16 moving forward.

  Reference numeral 20 denotes a thoracic part support member. A long hole 22 is formed in a pair of ear pieces 21 projecting from the front surface at the upper end of the first back frame 10 in the vertical direction, and the upper end of the thoracic part support member 20 is By projecting a bearing piece 23 on the rear surface of the head portion and loosely fitting a support shaft 24 supported by the bearing piece into the elongated hole 22, the chest support member 20 is moved up and down on the upper front surface of the first back frame 10. It is installed so that sliding in the direction is allowed.

Further, the second back frame 25 is formed in a substantially L-shaped side surface shorter than the first back frame 10, and a support shaft 26 inserted through the lower projecting portion 8 of the support base 3 at the lower end of the second back frame. By pivotally attaching, the second back frame 25 is erected between the bifurcated shapes of the first back frame 10 and supported so as to be able to tilt backward independently of the first back frame. Further, second urging means for urging the second back frame 25 to stand is provided. That is,
A support shaft 27 is inserted into the protruding end portion of the rear projecting portion 8 of the support base 3, a spring seat 28 is supported on the support shaft 27, and one end of a coiled spring 29 is fixed to the spring seat 28. The other end of the second frame 25 is connected to a support shaft 30 inserted near the upper portion of the second back frame 25 via a spring seat 31 so that the spring is compressed, and the elasticity of the second back frame 25 is achieved by the elasticity of the spring. Energized to stand up. Further, a waist support member 32 is provided on the upper front surface of the second back frame 25, and when the second back frame 25 is in a standing state, the waist support member 32 is elastically applied to the seat plate support plate by the elasticity of the second biasing means. 16 is configured to project forward at an upper portion of 16.

  Reference numeral 35 denotes a connecting shaft provided so as to penetrate the upper back surface of the second back frame 25, and both end portions of the connecting shaft 35 are inserted into the leg portions 24 extending downward from both lower side edges of the rib cage support member 20. By doing so, the upper part of the second back frame 25 and the ribcage support member 20 are connected via the connecting shaft 35 so as to be capable of being bent.

Next, a lock mechanism for fixing the second back frame 25 in an upright state will be described. Note that the lock mechanism shown in this embodiment also uses the connecting shaft 35 as an operation unit. That is, as shown in FIG. 1, the operating lever 36 is fixed to one end of the connecting shaft 35, the cam piece 38 is fixed to the intermediate portion of the connecting shaft 35, and the cam piece is fixed to the inner surface of the second back frame 25. The rotation regulating member 39 made of a plate spring is slidably contacted, and one end of the core wire 46 of the push-pull wire 41 is fixed to the outer periphery of the connecting shaft 35. 42 is a front T-shaped structural member fixed to the second back frame 25 by the support shaft 26 and the support shaft 48, and 43 is provided on the rear projecting portion 8 of the support base 3 so as to be positioned below the structural member. The lock member 43 is a block-like lock member, and is provided so as to be able to advance and retreat by loosely fitting a guide shaft 45 in a long hole 44 formed on both sides of the rear protrusion 8. The other end of the core wire 46 of the push-pull wire 41 is fixed to the lock member 43. Therefore, by operating the operating lever 36 and rotating the connecting shaft 35, the core wire 46 is pushed and pulled, and the lock member 43 connected to the other end of the core wire 46 moves forward and backward. When the lock member 43 is advanced as shown in FIG. 2, the lock member 43 is engaged with the protrusion 47 formed on the lower surface of the structural member 42, so that the second back frame 25 is brought into an upright state. Fixed. In addition, as shown in FIG. 6, when the lock member 43 is retracted and separated from the protrusion 47, the second back frame 25 can be inclined rearward.
In this way, by using the connecting shaft 35 as an operation portion, the number of required components can be reduced, and the operation lever 36 is provided at a position where it can be easily seen and operated from the outside. The setting state of the chair can be easily confirmed, which is convenient for managing the setting state of each chair in the game hall.

  FIG. 7 is a side view showing a use state of the chair, and FIG. 7A shows a state where the first back frame 10 and the second back frame 25 are in a standing state. When the user turns his back backward in a state where the second back frame 25 is fixed in this standing state by operating the lock mechanism, as shown in FIG. Is pushed backward by the shoulder, and only the first back frame 10 is tilted backward by about 12 degrees from the vertical standing state at the maximum. At this time, the rib cage support member 20 tilts backward to about 24 degrees. For this reason, the player can greatly warp only the upper body and stretch his / her back while the waist is supported by the waist support member 23. In this chair, since the seat plate support plate 16 is supported in the front-rear direction, when the first back frame 10 is tilted backward as shown in FIG. The seat plate 15 also moves slightly rearward along with the movement, whereas the waist support member 32 does not move, so the waist support member 32 is pressed against the player's waist, and the waist is pushed forward by the waist support member. Thus, the above-described stretching can be performed very comfortably. Therefore, there is an advantage that the degree of fatigue felt by the player is remarkably reduced even if the game is played for a long time. Further, since this posture can be realized only by tilting the first back frame 10 about 12 degrees backward, even if it is installed in the game hall, it is difficult to obstruct the passage without protruding greatly in the rear passage. For this reason, it can be installed in an existing game hall without increasing the width of the passage.

  Further, in a state where the operation lever 36 is operated and the lock mechanism is released, the player's waist pushes the waist support member 32 and contracts the spring 29 so that not only the first back frame 10 but also the second back frame 25 is simultaneously backed. As shown in FIGS. 6 and 7 (c), the reclining with the thoracic support member 20 moving backward and the lumbar support member 32 tilting backward, and the player's back tilted backward by about 12 degrees. Can be kept in a state. Accordingly, even in this posture, the first back frame 10 and the second back frame 25 do not protrude greatly from the rear passage. As described above, by operating the operation lever 36, the waist support member 32 can be set to a state in which the waist support member 32 can be tilted backward, or can be easily switched to a setting in which the waist support member 32 is maintained in an upright state. Therefore, in this chair, simply by changing the setting of the lock mechanism by the operation lever 36, the state can be easily set to the player's preference as described above, which is convenient.

  In the chair shown in this embodiment, coil-like springs are shown as the first urging means and the second urging means. However, a gas spring is provided instead of the spring, and the gas spring is arbitrarily extended. By adjusting, it is possible to allow the user to adjust the ribcage support member 20 and the waist support member 32 to a desired setting state. For this reason, the chair of the present invention is extremely convenient not only for use in a game hall but also for office use and other uses.

Moreover, although not shown in figure, an armrest can also be attached to this chair as needed. Moreover, in this embodiment, the rib support member 20 is mounted on the upper front surface of the first back frame 10 by providing the long hole 22 so that sliding in the vertical direction is allowed. Or it can also be slidably pivoted by other connection means, such as connecting via a link.
In addition, constituent members such as the first back frame 10, the seat plate 15, the seat plate support plate 16, the rib cage support member 20, the second back frame 25, and the waist support member 32 are made of appropriate materials such as iron, aluminum, and plastic. Can be molded. Further, a cushion material can be appropriately disposed on the seat plate 15, the ribcage support member 20, the waist support member 32, etc., and a cushioning property can be obtained by stretching an elastic plastic net instead of the cushion material. May be.

The perspective view of the chair which shows embodiment of this invention. The longitudinal cross-section side view of the principal part of the chair of FIG. XX sectional drawing of FIG. The disassembled perspective view of the 1st back frame of the chair which concerns on this invention, a rib part support member, and a 2nd back frame. The operation state figure of FIG. The operation state figure of FIG. The side view which showed the use condition of the chair which concerns on this invention. The longitudinal cross-section side view which shows the backrest structure of the conventional chair.

Explanation of symbols

3 Support base 6 Spring (first biasing means)
8 rearward projecting portion 10 first back frame 16 seat plate support plate 18 support shaft 20 rib cage support member 22 long hole 25 second back frame 29 spring (second biasing means)
32 Lumbar support member 35 Connecting shaft 36 Operation lever 41 Push-pull wire 43 Lock member 47 Projection

Claims (2)

A first back frame which is formed in a substantially L-shaped side surface and has a lower portion formed in a bifurcated shape, and is supported so as to be tilted backward by pivotally attaching the bifurcated tip portion to both sides of the support base; A seat plate support plate having a front edge portion pivotally mounted on the support base so as to be movable in the front-rear direction, and a rear edge portion near the lower end of the first back frame and pivotally mounted at a rear portion thereof; A rib support member pivotally attached to the upper end of the first back frame so as to allow vertical sliding, and a substantially L-shaped side surface shorter than the first back frame. A second back frame, which is pivotally attached to the rearward projecting portion and stands up between the two forks of the first back frame and is supported so as to be able to tilt backward independently of the first back frame; In an upright state, the front plate protrudes forward at an upper portion of the seat plate support plate. Consists of a lumbar support member provided on the top front of the 2 back frame, and a lower portion of the upper and thoracic support member of the second back frame is connected via a connecting shaft, and the support base and the seat plate support plate A first urging means for urging the first back frame to be raised in conjunction with the forward movement of the seat plate support plate; and a rear projecting portion of the support base and a second back frame. And a second urging means for urging the second back frame to stand between the two.   The chair according to claim 1, further comprising a lock mechanism for fixing the second back frame in an upright state.

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