JP5358797B2 - Articulated chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of components when fixing a connecting member for connected chairs to a leading end of a leg member, and to reduce the number of man-hours for work. <P>SOLUTION: Connected chairs 3 include a plurality of chairs 21, a connecting member 22 for connecting the chairs to each other, and a leg member 25 for supporting the connecting member 22. Characteristically, the connected chairs 3 comprises a bracket 26 which has one end latched to a leading end of the leg member 25, which has the other end fastened to the leading end of the leg member 25 by means of a bolt 28, and which makes the connecting member 22 fixed in the state of being sandwiched between the bracket and the leading end of the leg member 25. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to a connecting chair having a plurality of chairs connected to each other by a connecting member supported by a leg member, and more particularly to a structure for fixing the connecting member to the leg member of the connecting chair.

  As a connecting chair having a plurality of chairs connected to each other by a connecting material supported by a leg member, for example, a connecting chair that has been used in a traveling bleacher seat previously disclosed in Patent Document 1 by the applicant of the present application is known. As shown in the middle two stages in FIG. 12, the movable bleachers are made up of a plurality of floors 1, legs 2 that support each floor 1 so as to be movable in a horizontal state, and connecting materials. Each of the floor bases 1 is provided in the left-right direction of the connection chair 3. The penetrating member 4 that extends horizontally and a plurality of parts that are spaced apart in the longitudinal direction of the penetrating member 4 are joined to the rear end portions thereof, and projecting horizontally from the penetrating member 4 to the front direction of the connecting chair 3. The arm member 5 includes a plurality of arm members 5 and a floor member 6 stretched over the plurality of arm members 5. A plurality of struts 7 each having an upper end portion coupled to a plurality of parts spaced apart in the longitudinal direction of 4 and extending downward from the penetrating material 4, and a vicinity of the rear end portion at the lower end portions of the struts 7. A plurality of leg members 8 that are respectively coupled and extend in parallel with the arm member 5, and a plurality of moving rollers 9 respectively provided at the front end portion and the rear end portion of the leg members 8, In the higher step, an inclined brace 10 for reinforcing the column 7 is provided on the rear surface side of the column 7.

  And in this mobile auditorium, the length of the plurality of columns 7 is different for each floor 1 by the level difference between the floors 1, and the penetrating material 4 to which the upper ends of the columns 7 are coupled is used. Since the interval between the portions is slightly different for each floor base 1, the plurality of floor bases 1 move in a horizontal state between an advanced position shifted from each other in a staircase shape and a retracted position aligned with each other in the vertical direction. When connecting to the retreat position, the connecting chair 3 is tilted forward and stored between the flooring 6.

  In such a movable bleacher seat, when the connecting chair 3 is mounted on the floor base 1 so that it can be tilted, it is conventionally supported by a bracket on the floor base 1 as disclosed in Patent Document 2, for example. The supporting shaft extending in the left-right direction of the floor base 1 is passed through the base of the leg member having a U-shaped cross-section, that is, a bowl-like shape, so that the leg member can swing in the front-rear direction of the floor base 1 with the supporting shaft. A square pipe-shaped connecting member for connecting a plurality of upright chairs of the connecting chair 3 to each other is arranged on a receiving bracket having a substantially L-shaped cross section that is supported and fixed to the tip of the leg member, and the connection is made A sandwich bracket having a substantially inverted L-shaped cross section is placed on the material, and the coupling member of the coupling chair 3 is disposed between the receiving bracket and the sandwich bracket, and both ends of the brackets are respectively connected to the leg members. Tighten with a total of four bolts, two on each side , And fixedly hold the coupling member of the coupling chair 3 between the bracket scissors with those receiving bracket.

Japanese Patent No. 3903354 JP 2000-204777 A

  By the way, the inventor of the present application has further studied the above-described conventional connecting chair, and found the following room for improvement. That is, the fixing structure for fixing the connecting member to the leg member of the conventional connecting chair 3 requires two brackets to be fastened with four bolts located on both sides of the leg member, and thus the number of parts increases. There was an inconvenience that the work man-hours increased.

The present invention advantageously solves the problems of the conventional connecting chair, and the connecting chair according to the present invention supports a plurality of chairs, a connecting member for connecting these chairs to each other, and the connecting member. A connecting chair comprising a leg member, wherein one end of the leg member is hooked in a retaining state and the other end is fastened with a bolt to the tip of the leg member, A bracket for sandwiching and fixing the connecting member between the front end portion of the member is provided.

In the connecting chair according to the present invention, the connecting member for connecting the plurality of chairs to each other hooks one end of the bracket in a retaining state on the tip of the leg member and prevents the bracket from being attached to the tip of the leg member. By fastening the other end with a bolt, the leg member is clamped and fixed between the distal end of the leg member and the bracket, whereby the plurality of chairs of the coupled chair are supported by the leg member.

Therefore, according to the consolidated chair of the present invention, when fixing the connecting member to the distal end of the leg member, bolt engaging the other end portion in the retaining state of the end portion of the bracket to the tip of the leg member Since only one fastening is required, only one bracket is required, and the number of bolts that fasten the end of the bracket is one or two, so that the number of parts can be reduced and the number of work steps can be reduced.

In the connecting chair according to the present invention, the leg member is formed of a bowl-shaped member, and a tip portion is formed in a step shape so that a bottom portion of the bowl-shape is on a lower step side. At the corner of the lower step of the stepped tip of the member, a hooking portion is formed to hook the one end of the bracket in a retaining state, and the stepped tip of the leg member is high. A bolt hole or a bolt for fastening the other end of the bracket may be provided on the other step.

In this way, after one end of the bracket is hooked on the lower step of the stepped tip of the leg member in a retaining state, the connecting member of the connecting chair is placed on the lower step, and then the bracket A simple operation of attaching the other end of the bracket to the tip using a bolt hole or bolt provided on the higher step of the stepped tip of the leg member In the process, the connecting member of the connecting chair can be fixed to the tip of the leg member.

  In addition, since the end of the stepped portion of the leg member is close to the bottom of the heel, the end of the bracket is hooked to the corner of the lower step, which is high in rigidity. Fixing strength can be increased.

Further, in the connecting chair of the present invention, the leg member is formed of a bowl-shaped member, and a tip portion is formed in a stepped shape so that a bottom portion of the bowl-shape is on a lower step side, and the leg Bolt holes or bolts for fastening the other end of the bracket are provided at the lower corner of the stepped tip of the member, and the stepped tip of the leg member is high. A latching member that latches the one end of the bracket in a retaining state may be attached to the step.

Thus, after latching while retaining one end of the bracket to the latch member mounted on the stage of the higher stepped distal portion of the leg member, the lower of the distal end portion of the leg member Put the connecting material of the connecting chair on the step, and then cover the bracket with the connecting material, then attach the other end of the bracket to the bolt hole or bolt provided in the lower step of the stepped tip of the leg member The connecting member of the connecting chair can be fixed to the tip of the leg member by a simple work process of using and fastening to the tip.

  In addition, since the arrangement of the higher step of the stepped tip and the arrangement of the latching member thereon can be appropriately set, the bracket latching portion is provided on the lower step of the stepped tip of the leg member. The degree of freedom in setting the fixed position of the connecting member with respect to the distal end portion of the leg member can be increased more than in the case.

It is a side view which shows the movable bleacher seat which provides one Example of the connection chair of this invention in the state which exists in the advancing position where the multi-stage floor base mutually shifted in steps. It is a side view which shows the movable bleacher seat which provides the connection chair of the said Example in the state which exists in the retreat position where the multistage floor base mutually aligned in the up-down direction. It is a rear view which abbreviate | omits a chair and shows the whole mobile bleachers which provide the connection chair of the said Example. (A), (b) is the front view and side view which show the structure which fixes the connection material of the connection chair of the said Example to the front-end | tip part of a leg member. (A)-(d) is the top view which shows the leg member in the connection chair of the said Example, a front view, a side view, and a rear view. (A), (b), (c) is the top view, front view, and side view which show the pinching bracket in the connection chair of the said Example. (A) is the front view which shows the leg bracket in the connection chair of the said Example in the state which assembled | attached the leg member there, (b) is the said leg bracket assembled | attached there with a leg member and a pinch bracket. The side view which shows the state which clamped the connection material, (c) is a side view which shows the method of clamping a connection material to the leg member assembled | attached to the said leg bracket, (d) is the leg member assembled | attached to the said leg bracket. It is a side view which shows a pinch bracket in the state which pinched | interposed and clamped the connection material. (A), (b) is the front view and side view which show the structure which fixes the connection material in other one Example of the connection chair of this invention to the front-end | tip part of a leg member. (A)-(d) is the top view which shows the leg member in the connection chair of the said Example, a front view, a side view, and a rear view. (A), (b), (c) is the top view, front view, and side view which show the pinching bracket in the connection chair of the said Example. (A) is the front view which shows the leg bracket in the connection chair of the said Example in the state which assembled | attached the leg member there, (b) is the said leg bracket assembled | attached there with a leg member and a pinch bracket. The side view which shows the state which clamped the connection material, (c) is a side view which shows the method of clamping a connection material to the leg member assembled | attached to the said leg bracket, (d) is the leg member assembled | attached to the said leg bracket. It is a side view which shows a pinch bracket in the state which pinched | interposed and clamped the connection material. It is a perspective view which shows the structure of the intermediate | middle two steps | paragraphs of the moving bleachers which provide the conventional connection chair.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Here, FIG. 1 is a side view showing a moving bleacher seat having an embodiment of the connecting chair of the present invention in a state where the multi-stage floor bases are in an advanced position shifted from each other in a staircase shape, and FIG. FIG. 3 is a side view showing a movable bleacher seat having the connecting chair of the above embodiment in a retracted position in which a plurality of floors are vertically aligned with each other, and FIG. 3 is a movement having the connecting chair of the above embodiment. It is a rear view which abbreviate | omits a chair and shows the whole bleachers.

  Similarly to the movable bleachers having the connecting chairs 3 shown in FIG. 12, the movable bleachers having the connecting chairs 3 of this embodiment can be moved in a horizontal state on the multi-stage floor 1 and each floor 1. And a connecting chair 3 having a plurality of upright chairs 21 connected to each other by connecting members and mounted on each floor base 1 so as to be able to rise and fall. The floor base 1 has a penetrating member 4 that extends horizontally in the left-right direction of the connecting chair 3 and a plurality of parts that are spaced apart in the longitudinal direction of the penetrating member 4, and the rear end portion thereof is coupled to the penetrating member 4. A plurality of arm members 5 projecting horizontally in the forward direction of the connecting chair 3, and a floor material 6 stretched over the plurality of arm members 5. A plurality of support columns 7 each having an upper end portion coupled to a plurality of parts spaced apart in the longitudinal direction and extending downward from the penetrating material 4, and lower ends of the support columns 7 A plurality of legs 8 coupled in the vicinity of the rear end portion and extending in parallel with the arm member 5, and a plurality of moving rollers respectively provided at the front end portion and the rear end portion of the leg members 8 9 and a higher stage from the third stage to the fifth stage has an inclined brace 10 for reinforcing the column 7 on the rear surface side of the column 7.

  And also in the traveling bleacher seat which comprises the connection chair 3 of this embodiment, as shown in FIG. 3, the length of the plurality of columns 7 is different for each step 1 by the level difference between the floors 1, As the floor 1 is lowered, the length of the support 7 is shortened, and the interval between the portions of the penetrating material 4 to which the upper ends of the plurality of supports 7 are joined is slightly different for each floor 1. As the distance becomes lower, the interval between the columns 7 becomes shorter, so that the multi-stage floor base 1 moves forward as shown in FIG. 1, and the retracted position shown in FIG. You can move between

  And on both outer sides of the legs 8 of the uppermost floor pedestal 1, there are provided small guide rollers that respectively contact the two guide rails 11 fixed on the floor surface F. Each of the floor bases 1 can move forward and backward in a predetermined direction by the guide by contact with the guide rail 11, and when moving to the retracted position, as shown in FIG. It is stored between the flooring 6. In this case, the penetrating member 4 is provided with a penetrating member for passage and a penetrating member for seat separately.

  However, in the connecting chair 3 of this embodiment, as shown in FIG. 4, a plurality of seat standing type chairs 21 constituting each connecting chair 3 are connected to each other by a connecting member 22 having a square pipe shape. When the chair 3 is mounted on each floor base 1 so that the chair 3 can be tilted, a support shaft 24 that is supported on the floor base 1 by a leg bracket 23 having a substantially hat-shaped cross section and extends in the left-right direction of the floor base 1 is provided. The leg member 25 is passed through the base portion of the leg member 25 having a substantially U-shaped cross section, that is, a substantially bowl-like shape, and is supported by the support shaft 24 so as to be swingable in the front-rear direction of the floor 1. The connecting member 22 in the shape of a square pipe is disposed on the connecting member, and a sandwiching bracket 26 having a substantially inverted L-shaped cross section is placed on the joining member, and the connecting member is interposed between the ends of the leg members 25 and the sandwiching bracket 26. 22, and one end of the clip bracket 26 is hooked to the tip of the leg member 25. At the same time, the other end portion of the sandwiching bracket 26 is fastened to the distal end portion of the leg member 25 with a bolt, so that the rectangular pipe-shaped connecting member 22 is sandwiched between the distal end of the leg member 25 and the sandwiching bracket 26. It is fixed.

  FIGS. 5A to 5D are a plan view, a front view, a side view, and a rear view showing the leg member 25 in the connecting chair 3 of this embodiment, where the leg member 25 is a single steel plate. Consisting of a substantially bowl-shaped (cross-section U-shaped) member formed by bending, the tip is formed in a two-step shape, and the tip of the bottom of the bowl is cut off from both sides, and the bottom The front end of the first stage 25a located on the side of the second side and the wall and front end of the second stage 25b are bent and welded to both sides. A T-shaped hole extending from the front surface of the leg member 25 to the front end surface of the first step 25a and a round hole located on the front end surface of the second step 25b are opened, whereby the first step of the front end portion of the leg member 25 is formed. At the corners of the eyes 25a, both sides of the T-shaped hole at the tip of the bottom of the bowl A latching portion 25c for latching one end portion of the sandwiching bracket 26 is formed, and a bolt hole 25d for fastening the other end portion of the sandwiching bracket 26 is formed in the second step 25b by the round hole. Has been.

  Further, through holes 25e through which the support shaft 24 is inserted are formed on both side portions of the base portion of the leg member 25, and a drive shaft is provided on both side portions of the intermediate portion between the base portion and the distal end portion of the leg member 25. A through hole 25f is formed through which the contact hole 25f is inserted, and a contact portion 25g that comes into contact with a stopper bolt, which will be described later, is provided near the through hole 25f.

  FIGS. 6A, 6B, and 6C are a plan view, a front view, and a side view showing the pinching bracket 26 in the connecting chair 3 of this embodiment, where the pinching bracket 26 is a single steel plate. Is formed with a substantially inverted L-shaped member formed by bending a reverse T-shaped engaging portion 26a at one end thereof (the lower end in FIGS. 6B and 6C). A round hole-shaped bolt hole 26b is formed at the end (the upper end in FIG. 6 (a)), and the engaging portion 26a is located on the inner side with respect to other adjacent portions as shown in FIG. 6 (c). It is offset.

  FIG. 7A is a front view showing the leg bracket 23 in the connecting chair 3 of this embodiment in a state where the leg member 25 is assembled thereto, and FIG. 7B shows the leg bracket 23 therewith. FIG. 7C is a side view showing the state in which the connecting member 22 is sandwiched by assembling the member 25 and the sandwiching bracket 26, and FIG. 7C shows a method for sandwiching the connecting member 22 in the leg member 25 assembled to the leg bracket 23. FIG. 7D is a side view showing the leg member 25 and the sandwiching bracket 26 assembled to the leg bracket 23 in a state where the connecting member 22 is sandwiched and tilted.

  As shown in FIG. 7, the leg bracket 23 here is made of a member having a substantially hat-shaped cross section formed by bending a single steel plate, and is penetrated by supporting shafts 24 inserted into both side portions of one end portion. A hole 23a is formed, and relief portions for preventing contact with the drive shaft 27 are formed on both sides of the one end portion, and a stopper bolt 23b is horizontally disposed on one side portion adjacent to the relief portion so that the protruding length can be adjusted. Is provided. Further, in the leg bracket 23, a link (not shown) having one end connected to the drive shaft 27, a crank (not shown) for driving the other end of the link forward and backward, and a gear set (not shown) for rotating the crank And an input shaft (not shown) of the gear set protrudes from both side surfaces of the leg bracket 23.

The base of the leg member 25 is set to the leg bracket 23 via the support shaft 24 inserted through the through hole 23a of the leg bracket 23, and the standing position and the fall position are shown in FIGS. 7 (b) and 7 (d). 7c, the hooking portion of the bracket 26 is sandwiched in a T-shaped hole in the first step 25a of the distal end portion of the leg member 25 positioned at its standing position as shown in FIG. 26a is inserted and the hooking portion 26a of the pinching bracket 26 is hooked to the hooking portion 25c at the corner of the first stage 25a from the inside to prevent the pinching bracket 26 from coming off. 7A and 7B are mounted on the front end portion of the leg member 25 in contact with the front end surface of the step 25a and the wall surface of the second step 25b. Then, as shown in FIG. Turn the bracket bracket 26 The front end of the leg member 25 is formed by aligning the hole 26b and the bolt hole 25d of the second stage 25c at the front end of the leg member 25 and fastening the bolt 28 inserted through the bolt holes 26b, 25d with a nut 29. The connecting member 22 is clamped and fixed to the part.

  As shown in FIG. 4, the leg bracket 23 is fixed on the floor base 1 with, for example, a bolt (not shown), so that the connecting chair 3 is in an upright use position shown by a solid line in FIG. (B) It can be supported so as to be able to swing between the storage position that has fallen before indicated by the middle phantom line, and the swing between the use position of the connecting chair 3 and the storage position can be performed by each leg bracket. By driving the input shafts of the above-mentioned gear sets protruding from 23 and connected to each other by a motor (not shown), it can be automatically performed when the floor base 1 is deployed and stored.

  In the movable bleacher seat having the connecting chair 3 of this embodiment, the base material is supported on each floor base 1 so that the connecting member 22 for connecting the plurality of seat standing chairs 21 to each other can be raised and lowered. One end portion of the sandwiching bracket 26 is hooked to the distal end portion of the leg member 25 and the other end portion of the sandwiching bracket 26 is fastened to the distal end portion of the leg member 25 with a bolt 28, whereby the distal end of the leg member 25 is secured. When the plurality of floors 1 are in the advanced position shifted from each other stepwise as shown in FIG. 1, the connecting chair 3 can be raised and seated. In addition, when the plurality of floors 1 move from their advanced positions to the retracted positions aligned in the vertical direction as shown in FIG. 2, the connecting chair 3 is tilted and accommodated between the floors 1. .

  Therefore, according to the connecting chair 3 of this embodiment, when the connecting member 22 of the connecting chair 3 is fixed to the distal end portion of the leg member 25, the one end portion of the clip bracket 26 is hooked to the distal end portion of the leg member 25. And the other end of the bolt are fastened, so only one bracket is required, and the number of bolts 28 that fasten the end of the clip bracket 26 is reduced to one, which reduces the number of parts and man-hours. Can be reduced.

  Furthermore, according to the connecting chair 3 of this embodiment, the leg member 25 is formed of a bowl-shaped member and the front end portion is stepped so as to be on the first step 25a side, which is the lower step of the bowl shape. At the corner of the first step 25a of the stepped tip of the leg member 25, a hook 25c for hooking the hook 26a at one end of the clip bracket 26 is formed, A bolt hole 25d for fastening the other end of the clip bracket 26 is provided at the second step of the stepped tip of the leg member 25, so that 1 of the stepped tip of the leg member 25 is provided. After hooking one end of the pinching bracket 26 at the step, the connecting member 22 is put on the first step, and then the pinching bracket 26 is put on the connecting member 22, and then the other end of the pinching bracket 26 is attached to the leg member. Bolt hole 2 provided in the second step of the stepped end portion of 25 steps By a simple working step that fastened at its distal end with bolts 28 and nuts 29 with d, the connecting member 22 can be fixed to the distal end of the leg member 25.

  Moreover, since the front end of the stepped portion of the leg member 25 is close to the bottom of the heel, the engaging portion 26a of the bracket 26 is hooked at the corner portion of the first step having high rigidity, so that the end of the leg member 25 is The fixing strength of the connecting material 22 can be increased.

  8 (a) and 8 (b) are a front view and a side view showing a structure for fixing a connecting member to the distal end portion of the leg member in another embodiment of the connecting chair of the present invention. The chair 3 is different from the previous embodiment only in the structure in which the square pipe-shaped connecting member 22 is sandwiched between the leg member 25 and the sandwiching bracket 26, and is otherwise configured in the same manner as the previous embodiment. .

  That is, also in the connecting chair 3 of this embodiment, as in the previous embodiment, as shown in FIG. 8, a plurality of upright chairs 21 constituting each connecting chair 3 are connected to each other by a connecting member 22 having a square pipe shape. When the connecting chair 3 is mounted on each floor base 1 so that it can be tilted, it is supported on the floor base 1 by a leg bracket 23 having a substantially hat-shaped cross section and extends in the left-right direction of the floor base 1. The supporting shaft 24 is passed through the base of a leg member 25 having a substantially U-shaped cross section, that is, a substantially bowl-like shape, and the leg member 25 is supported by the support shaft 24 so as to be swingable in the front-rear direction of the floor 1. The square pipe-shaped connecting member 22 is disposed on the tip of the leg member 25, and a clip bracket 26 having a substantially inverted L-shaped cross section is placed on the connector, and the tip of the leg member 25, the clip bracket 26, A connecting member 22 is interposed between the leg members 25 and one end of the sandwiching bracket 26 is attached to the leg member 25. The square pipe-shaped connecting member 22 is clamped to the tip of the leg member 25 and the bracket by fastening the other end of the clip bracket 26 to the tip of the leg member 25 with a bolt. 26 and is fixed between.

  9A to 9D are a plan view, a front view, a side view, and a rear view showing the leg member 25 in the connecting chair 3 of this embodiment, and the leg member 25 in this case is a single steel plate. Consisting of a substantially bowl-shaped (cross-section U-shaped) member formed by bending, the tip is formed in a two-step shape, and the tip of the bottom of the bowl is cut off from both sides, and the bottom The first stage 25a located on the side of the base is bent so as to have an inclined corner and welded to both sides, and a round hole is formed at the tip of the bottom, thereby the leg member 25. A bolt hole 25d for fastening one end of the sandwiching bracket 26 is formed at the corner of the first stage 25a at the tip of the bolt, and a nut 29 is welded to the back side of the bolt hole 25d. Further, a latch pin 30 as a latch member for latching the other end portion of the sandwiching bracket 26 is provided between both side portions of the second stage 25 b of the distal end portion of the leg member 25.

  Further, through holes 25e through which the support shaft 24 is inserted are formed on both side portions of the base portion of the leg member 25, and a drive shaft is provided on both side portions of the intermediate portion between the base portion and the distal end portion of the leg member 25. A through hole 25f is formed, and a contact portion 25g that comes into contact with a stopper bolt, which will be described later, is provided near the through hole 25f.

  FIGS. 10A, 10B, and 10C are a plan view, a front view, and a side view showing the sandwiching bracket 26 in the connecting chair 3 of this embodiment, where the sandwiching bracket 26 is a single steel plate. And a hook portion 26a having a substantially U-shaped cross section is formed at one end thereof (the upper end portion in FIG. 10A), and the other end portion ( 10 (b) and 10 (c), a round hole-like bolt hole 26b is formed in the lower end portion, and the other end portion is outside the other adjacent portion as shown in FIG. 10 (c). It is inclined to.

  FIG. 11A is a front view showing the leg bracket 23 in the connecting chair 3 of this embodiment in a state in which the leg member 25 is assembled thereto, and FIG. 11B shows the leg bracket 23 there. FIG. 11C is a side view showing the state in which the connecting member 22 is sandwiched by assembling the member 25 and the sandwiching bracket 26, and FIG. 11C shows a method for sandwiching the connecting member 22 in the leg member 25 assembled to the leg bracket 23. FIG. 11D is a side view showing the leg member 25 and the sandwiching bracket 26 assembled to the leg bracket 23 in a state where the connecting member 22 is sandwiched and tilted.

  As shown in FIG. 11, the leg bracket 23 is also made of a member having a substantially hat-shaped cross section formed by bending a single steel plate, and has a support shaft 24 inserted into and supported by both side portions of one end portion. A hole 23a is formed, and relief portions for preventing contact with the drive shaft 27 are formed on both sides of the one end portion, and a stopper bolt 23b is horizontally disposed on one side portion adjacent to the relief portion so that the protruding length can be adjusted. Is provided. Further, in the leg bracket 23, a link (not shown) having one end connected to the drive shaft 27, a crank (not shown) for driving the other end of the link forward and backward, and a gear set (not shown) for rotating the crank And an input shaft (not shown) of the gear set protrudes from both side surfaces of the leg bracket 23.

The base of the leg member 25 is set to the leg bracket 23 via the support shaft 24 inserted through the through hole 23a of the leg bracket 23, as shown in FIGS. 11 (b) and 11 (d). As shown in FIG. 11C, the engaging portion 26a of the bracket 26 is pulled by the engaging pin 30 of the second step 25b of the distal end portion of the leg member 25 positioned at the standing position as shown in FIG. After hooking and engaging the engaging portion 26a of the sandwiching bracket 26 with the tip of the second step 25b in a retaining state , the connecting member 22 is brought into contact with the tip of the first step 25a and the wall of the second step 25b. Then, as shown in FIG. 11B, the pinch bracket 26 is rotated counterclockwise by about 90 degrees in the drawing, and the bolt hole 26b of the pinch bracket 26 and the leg member 25 are mounted. First stage 25a of the tip of Aligning the bolt holes 25d, their bolt holes 26b, a bolt 28 inserted through the 25d By fastened with nut 29, the connecting member 22 is sandwiched and fixed to the distal end of the leg member 25.

  As shown in FIG. 8, the leg bracket 23 is fixed on the floor base 1 with, for example, a bolt (not shown), so that the connecting chair 3 is in an upright use position shown by a solid line in FIG. (B) It can be supported so as to be able to swing between the storage position that has fallen before indicated by the middle phantom line, and the swing between the use position of the connecting chair 3 and the storage position can be performed by each leg bracket. By driving the input shafts of the above-mentioned gear sets protruding from 23 and connected to each other by a motor (not shown), it can be automatically performed when the floor base 1 is deployed and stored.

  Also in the connecting chair 3 of this embodiment, when the connecting member 22 is fixed to the distal end portion of the leg member 25 as in the previous embodiment, one end of the clip bracket 26 is hooked on the distal end portion of the leg member 25. Since only one stop and bolt fastening at the other end are required, only one bracket is required, and only one bolt 28 is required to fasten the end of the sandwiching bracket 26, so that the number of parts can be reduced and the number of work steps can be reduced. Can also be reduced.

  Furthermore, according to the connecting chair 3 of this embodiment, the leg member 25 is formed of a bowl-shaped member and the front end portion is stepped so as to be on the first step 25a side, which is the lower step of the bowl shape. A bolt hole 25d for fastening the other end of the clip bracket 26 is provided at the corner of the first step 25a of the stepped tip of the leg member 25. Since the latch pin 30 for latching one end of the clip bracket 26 is attached to the second step of the stepped tip, the second step of the stepped tip of the leg member 25 is attached. After hooking one end of the pinching bracket 26 on the hooking pin 30, the connecting member 22 of the connecting chair 3 is placed on the first step of the leg member 25, and then the pinching bracket 26 is put on the connecting member 22. After that, the other end of the clip bracket 26 is shaped like a staircase of the leg member 25. The connecting member 22 of the connecting chair 3 can be fixed to the tip of the leg member 25 by a simple work process of fastening to the tip using the bolt hole 25d provided in the first step of the tip. .

  Moreover, since the arrangement of the second step of the stepped tip of the leg member 25 and the arrangement of the latch pin 30 thereon can be set as appropriate, the latching portion 26a of the clip bracket 26 is used as the stepped tip of the leg member 25. The degree of freedom of setting the fixing position of the connecting member 22 with respect to the distal end portion of the leg member 25 can be increased as compared with the case where it is provided at the first stage 25a of the leg portion. The fixing position of the connecting member 22 with respect to the distal end portion of the leg member 25 is set rearward as compared with the case where the first step 25a of the 25 stepped distal end portion is provided.

  Although the present invention has been described based on the illustrated examples, the present invention is not limited to the above-described examples, and can be appropriately changed within the scope of the claims. For example, the chair of the above-described embodiment is provided. In the traveling bleachers, the penetrating member 4 is provided separately for the penetrating member for the seat and the penetrating member for the passage, but the penetrating member 4 may be common for the seat and for the passage. Moreover, although all the connecting chairs 3 in the above example are configured to be automatically tilted by the motor when the mobile seat is unfolded and stored, the connecting chair 3 may be manually tilted, In this case, a lock mechanism that releasably latches the leg member 25 in the standing position may be provided.

  Further, instead of providing the bolt hole 25d at the distal end portion of the leg member 25, a bolt may be provided so that the bolt hole 26b of the sandwiching bracket 26 may be a long hole or a notch, or the bolt hole at the distal end portion of the leg member 25 may be provided. An internal thread may be formed on 25d itself. In each of the above examples, the number of the bolts 28 for fastening the end of the sandwiching bracket 26 to the tip of the leg member 25 is one, but it may be two if necessary.

  The connecting chair 3 in the above example is installed on each floor base 1 of the mobile auditorium so as to be able to rise and fall. However, the connecting chair of the present invention is provided with a foot member for allowing the leg member to stand on its own to provide a floor for the mobile auditorium. It may be placed on a table, or it may be used in a place other than a moving seat. In those cases, a plurality of chairs connected to each other by a connecting material is of a seat-standing type. Not necessarily.

  Thus, according to the connecting chair of the present invention, when the connecting member is fixed to the tip end portion of the leg member, it is only necessary to hook one end portion of the bracket to the tip end portion of the leg member and bolt fastening to the other end portion. One bracket is sufficient, and the number of bolts that fasten the end of the bracket is one or two, so that the number of parts can be reduced and the number of work steps can be reduced.

DESCRIPTION OF SYMBOLS 1 Floor base 2 Leg part 3 Connecting chair 4 Penetration material 4A Seat penetration material 4B Penetration material for passage 5 Arm material 5A Arm material for seat 5B Arm material for passage 6 Floor material 6A Floor material for seat 6B Floor material for passage 6C Material 7 Posts 8 Leg material 9 Moving roller 10 Inclined brace 11 Guide rail 12 Bracket 13 Arm material mounting bracket 14 Stopper bolt 15 Arm material support roller 16 Auxiliary step 21 Seat upright chair 22 Connecting material 23 Leg bracket 23a Through hole 23b Stopper Bolt 24 Support shaft 25 Leg member 25a First stage 25b Second stage 25c Hooking part 25d Bolt hole 25e Through hole 25f Through hole 25g Abutting part 26 Clamping bracket 26a Engaging part 26b Bolt hole 27 Drive shaft 28 Bolt 29 Nut 30 Hook Stop pin
F floor

Claims (4)

A plurality of chairs (21);
A connecting material (22) for connecting the chairs to each other;
A leg member (25) for supporting the connecting member (22);
In the connecting chair (3) comprising
One end of the leg member (25) is hooked in a retaining state, and the other end is fastened to the tip of the leg member (25) with a bolt (28). 25) A connecting chair comprising a bracket (26) for sandwiching and fixing the connecting member (22) between the front end portion of 25). The leg member (25) is formed of a bowl-shaped member and has a tip portion formed in a step shape so that the bottom of the bowl shape is on the lower step side,
At the corner of the lower step of the stepped tip of the leg member (25), a hooking portion is formed to hook the one end of the bracket (26) in a retaining state ,
A bolt hole or a bolt for fastening the other end of the bracket (26) is provided at the higher step of the stepped tip of the leg member (25). The connecting chair according to claim 1. The leg member (25) is formed of a bowl-shaped member and has a tip portion formed in a step shape so that the bottom of the bowl shape is on the lower step side,
A bolt hole or a bolt for fastening the other end of the bracket (26) is provided at the corner of the lower step of the stepped tip of the leg member (25),
A hooking member for hooking the one end of the bracket (26) in a retaining state is attached to the higher step of the stepped tip of the leg member (25). The connecting chair according to claim 1.   The connecting chair according to any one of claims 1 to 3, wherein the leg member (25) is formed by bending a single plate.

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