JP6242482B2 - Mobile bleachers - Google Patents

Description

  The present invention relates to a use position in which a plurality of floor bases expands in a stepwise manner as the bottom base of them moves forward and backward (hereinafter sometimes referred to as “normal use position”) and the whole When moving backward from the normal use position to the storage position in order to move back and forth in conjunction with the storage position aligned vertically in order to reduce the load on the floor of the place where the moving seat is installed With regard to the traveling bleachers that move to the storage position in order from the floor located at the back, in particular, the usage position (hereinafter referred to as the "shortened usage position") that expands in a staircase and that some of the multi-level floors are aligned vertically. It may relate to a moving bleacher that can be selected. In this specification, “front” refers to the direction in which the multi-stage floors developed in a staircase shape of the mobile auditorium decrease in order, and “rear” refers to the multi-level floors in a staircase pattern that increase in order. The left and right direction means the left and right sides when facing forward.

  The multi-level floor base is interlocked with each other between the use position that expands in a staircase as a whole and the storage position that is aligned in the vertical direction as the lowermost floor base moves forward and backward. In order to reduce the load on the floor of the place where the moving seat is installed, the moving seat that moves to the storage position in order from the floor located at the rear when moving backward from the use position to the storage position in order to reduce the load on the floor 2. Description of the Related Art Conventionally, for example, a moving bleacher seat previously disclosed in Patent Document 1 by the applicant of the present application is known, and this movable bleacher seat is set up in a row in a longitudinal direction on each floor platform and on each floor platform. A stand-up-type connecting chair that is mounted in a tiltable manner, and legs that support each floor base in a horizontal state so that it can move in the front-rear direction of the moving seat, and interlock the floor bases by engaging each other, The legs should be placed at multiple locations spaced in the longitudinal direction of the floor. A plurality of struts that are coupled to the ends and extend downward from the floor, and a plurality of struts that extend in the front-rear direction of the connecting chair by coupling the vicinity of the rear end to the lower ends of the struts. It has a leg material and a roller for movement provided on each leg material.

  In this movable seat, the lengths of the plurality of columns differ from level to level for each floor, and the distance between the legs to which the lower ends of the columns are respectively coupled is the maximum. Since it is narrowed little by little in order from the upper floor, and the legs are arranged in the longitudinal direction of the floor, when installed in a place such as a hall, the multiple floor is When moving from the use position to the storage position. Fold down the connecting chair and store it between the floors as a flat storage posture.

  In addition, this movable bleacher seat has a claw at the front end at the lower end of the leg of each floor base except for the uppermost floor base located at the rearmost part in the use position and protrudes outward to the side. A hook member having a cam-like release portion is provided so as to be swingable in the vertical direction, and a stopper member is provided at the front end portion of the leg member of each floor base excluding the lowermost floor base located at the frontmost position in the use position. It protrudes inward and extends in the longitudinal direction of the moving seat on the floor of the installation site at a position outside the leg of the leg of the uppermost floor base in the longitudinal direction of the floor base. A fixing member that guides the back and forth movement of the leg portion of the uppermost floor base is fixed, and a stopper member is protruded inwardly at the front end of the fixing member to constitute the engaging and releasing means. ing.

  As a result, when the moving seat is moved forward from the storage position to the use position, if the lowermost floor base is moved forward by an electric driving means or the like, the leg column is supported during the forward movement of the lowermost floor base. The engaging member of the lower end is slidably contacted with the downwardly inclined side of the front end of the leg member and the downwardly inclined side of the claw of the front end of the leg of the second stage base from the bottom that is still stopped. When the claw is lifted up and the stopper member passes through the claw and comes into contact with the lower end of the bottom column, the claw at the front end is lowered and engages with the stopper member. After that, the second floor from the bottom is the lowest in the state where the stopper member at the front end of the leg of the leg is pushed by the lower end of the support of the bottom floor and is shifted stepwise with respect to the bottom floor. Move forward together with the lower floor pedestal, and move forward in the same way up to the uppermost floor pedestal.If the lower end of the column of the uppermost floor pedestal engages the stopper member at the front end of the fixed member, The entire multi-level platform from the top to the top stops at the use position.

  Also, when moving the bleachers from the use position to the storage position, if the lowermost floor is moved backward by the drive means etc., the entire multiple floors from the lowermost to the uppermost are linked together. When the uppermost floor pedestal located at the rearmost part moves backward to the storage position, the stopper member at the front end of the fixing member is moved to the stopper member at the lower end of the column of the leg of the second tier from the top. The downward sloping side of the release part comes into sliding contact with the release part, and the claws of the engaging member are lifted together with the release part so that the leg part of the second floor from the top is disengaged from the leg part of the uppermost floor base. As a result, the uppermost floor pedestal stops at the storage position, while the second floor pedestal from the top continues to move backward, and when the second floor pedestal from the top moves back to the storage position, the uppermost floor pedestal The stopper of the leg part front end of the leg part of the leg of the leg of the third floor from the top The downward sloping side of the release part of the engagement member at the end is in sliding contact, and the claw of the engagement member is lifted together with the release part, so that the leg of the third floor from the top is the leg of the uppermost floor And the second floor from the top stops at the storage position, while the third floor from the top continues to move backward and retracts to the storage position. Retreat to the storage position in order to the floor, and the entire plurality of floors from the bottom to the top stop at the storage position.

JP 2003-74203 A

  By the way, when the present inventor further researched on the above-mentioned conventional mobile seat, he found the following room for improvement. In other words, in the above-mentioned conventional mobile bleachers, it is either located at the use position and occupies most of the floor surface of the installation location, or is located at the storage position and the floor surface is vacated, and the method of use is free. Since there is no degree, for example, if necessary, the suspended floor base such as an intermediate passage step is overlapped with the upper floor base in the vertical direction by retreating together with the floor base below it, and the suspended use By deploying the upper and lower floor bases in a staircase pattern, the multi-level floor bases are placed in the shortened use position, and a small number of seats are installed at the installation location and the floor surface in front of it There is an inconvenience that it is not possible to select another method of use such as making the space available for a performance or the like.

  In order to eliminate this inconvenience, it was also considered to omit the engaging member that engages the leg of the floor that is one level above the leg that supports the suspended platform, By simply omitting the member, when the suspended platform is moved backward in conjunction with the lower platform, due to the release function of the upper platform of the suspended platform, In the lower part of the floor, the floor from the suspended floor to the lowest floor is released in order and aligned in the vertical direction, and then moves from the uppermost floor to the retracted position in order. Therefore, there is a disadvantage that the load on the floor surface of the installation site cannot be reduced sufficiently. It was serious because of the large number.

The present invention advantageously solves the problem of the above-mentioned conventional mobile bleachers, the mobile bleachers of the present invention, the multi-stage floor base, with the advance and retreat movement of the bottom floor base of them, A floor that is moved back and forth in conjunction with each other between a use position that expands in a stepwise manner and a storage position that is aligned vertically, and that is positioned backward when moving back from the use position to the storage position. In the traveling bleachers that move to the storage position in order from the table,
In the use position that expands in a staircase shape as a whole, it is possible to move backwards until the dormant floor stand of the plurality of steps is vertically aligned with the use stand on the first step of the floor stand. In addition, the floor base to be used one step below the use suspended floor base among the plurality of floor bases is engaged in the backward direction at a relative position shifted forwardly with respect to the use suspended floor base. ,
As the lowermost floor pedestal moves backward from the use position that expands in a stepwise manner, the lowermost floor pedestal and the use suspension are used. The engagement with the floor base in the backward direction is released by the floor base used on the first stage located at the storage position.

  In the traveling bleachers of the present invention, the use-free floor base of the multi-stage floor base is placed one step above the base at the use position where the multi-stage floor base is developed in a staircase shape as a whole. It is possible to move backward until it is aligned in the vertical direction with respect to the floor base to be used, and among the plurality of floor bases, the floor base to be used one level below the use halt base is used as the suspension base On the other hand, the lowermost floor pedestal in the state where the uppermost floor pedestal is stopped from the working position where it is engaged in the backward direction at the relative position shifted forward in a stepwise fashion and deployed in a stepwise shape as a whole. With the backward movement, the engagement between the floor base to be used one step below and the suspended bed base in the backward direction is released by the floor base to be used on the first step located at the storage position. Therefore, the floor platform used on the first level moves backward to the storage position and moves to the first level. Until it said releasing the backward direction of the engaging nest for use with the said use resting nest the floor stand until the bottom moves backward while shifted stepwise from the use resting nest.

  Therefore, according to the mobile bleachers of the present invention, the suspended platform is used as the rest platform by moving the lowest platform from the normal use position while the top platform is stopped. Since it overlaps in the vertical direction with respect to the floor base used on the step and the floor bases above and below the use halt base floor expand in a staircase shape, it is possible to expand the multi-level floor base to the shortened use position. .

  When the stop state of the uppermost floor platform is released from this shortened deployment position, and the multiple-stage floor platform deployed in the staircase shape is moved backward by the backward drive of the lowermost floor platform, The platform stops at the storage position in order from the floor and the engagement with the floor below one floor of the floor is released, so that the floor used on the first floor of the suspended floor is moved back to the storage position. When the engagement between the floor used one step below the suspended platform and the suspended platform is released in the backward direction, the floor platform used from the platform suspended one step below the suspended platform The floor pedestal that has been developed in the form of a staircase moves backward and stops at the accommodation position in order from the floor pedestal used one step below the suspended bed pedestal to the bottom pedestal.

  Therefore, according to the traveling bleachers of the present invention, even if the suspended platform is moved backward in conjunction with the lower platform, the first floor below the deactivated platform is below the suspended platform. The floors from the suspended floor to the bottom are sequentially released and aligned in the vertical direction, and then moved from the top floor to the retracted position in sequence, so the floor at the installation site The load on the surface can be reduced sufficiently.

In addition, in the traveling bleachers of the present invention, each of the plurality of floors includes legs that are movably supported in the front-rear direction of the traveling bleachers in a horizontal state,
The legs of the plurality of floors are engaged with the legs of the upper floors except for the use suspended floors, and the upper floors are shifted stepwise with respect to the floors. It has a hooking member that interlocks in the backward movement direction with the relative position.
Except for the floor base to be used one level below the suspended floor base, the hook member is moved back to a position aligned with the leg of the floor base on the second level in the left-right direction or to the storage position. , Providing a normal engagement release portion for releasing the engagement with the leg of the floor on the first stage,
A position or a storage position that is aligned in the left-right direction with the leg of the floor base that is three or more steps high according to the number of steps of the use-free floor base on the hooking member of the floor base to be used one step below the use-free use floor base It is preferable to provide an overlapping portion engagement release portion that releases the engagement of the engagement member with the leg portion of the suspended bed base.

  In this way, when the lowermost floor is driven backwards at the use position where the multi-stage floor is deployed in a staircase shape, the suspension base is engaged with the leg of the upper floor. Since there is no engaging member that links the upper floor to the backward movement direction with the relative position shifted in a stepwise manner with respect to the floor, the floor above the suspended base is stepped. With the unfolded and stopped at the use position, the floor platform from the suspended platform to the lowest level moves backward in a staircase shape, and the suspended platform is moved under the floor platform one level above it. If the backward movement of the lowermost floor is stopped when aligned with the floor, the suspended floor will be overlapped with the floor to be used one level above that floor. It is possible to generate a state in which the floor bases at the upper and lower steps than the inactive floor base are developed in a staircase shape.

  From this state, the uppermost floor platform can be moved backward, and when the lowermost floor platform is driven backward, each floor platform is supported except for the floor platform to be used one stage below the suspended floor platform. When the leg part moves backward to the position where it is aligned with the leg part of the floor base on the second level or to the storage position, the normal latch release part provided on the latch member of the leg part of the floor base is one stage. Since the engagement with the legs of the upper floors is released, the floors stop at the receiving position in order from the uppermost stage. At the stowed position, first align with the leg of the one-step or multiple-stage suspended floor base in the left-right direction, and further align with the leg of the floor base to be used one step below the rest-in-use floor base, The use suspension floor of the overlapping member engaging release part provided in the engaging member of the leg part of the floor base to be used one step below. Since releasing the engagement between the legs of all the floor stand below using resting nest is stopped at acquisition position in order.

  Therefore, according to the above configuration, by the simple configuration in which the overlapped portion engagement release portion having a function different from that of the normal engagement release portion is provided, the lowermost step from the use suspension floor platform is provided below the floor platform on the first level of the suspension layer. It is possible to prevent the inconvenience that the floor bases up to the above are released in order and aligned in the vertical direction.

And in the mobile bleachers of this invention, each said leg has a leg material extended in the front-back direction of a mobile bleachers,
It is preferable that the normal engagement release portion and the overlapping portion engagement release portion are driven by a driving member provided at a front end portion of the leg member to release the engagement.

  If it does in this way, the said normal engagement cancellation | release part will be driven by the drive member provided in the front end part of the leg material of the leg of a floor two steps higher than the floor base which has the normal engagement cancellation | release part. On the other hand, the overlapping portion engagement release portion is driven by a driving member provided at the front end portion of the leg of the floor base that is three or more steps higher than the floor base having the overlap portion engagement release portion. Since this is sufficient, it is possible to easily configure the normal engagement release portion and the overlapping portion engagement release portion having different functions.

  Further, in the mobile bleachers of the present invention, if the uppermost stop means for maintaining the uppermost floor stand among the plurality of floor stands at the use position is stopped, the upper stage at the use position is provided. It is preferable because it can prevent shaking of each floor base in the front-rear direction and give a sense of stability to the audience.

(A) And (b) is the top view and side view which show one Embodiment of the moving bleachers of this invention in the state expand | deployed to the normal use position. It is a perspective view which abbreviate | omits and partially cuts out the mobile bleachers of the said embodiment in the state expand | deployed to the said normal use position. It is a top view which shows the arrangement | positioning state of the leg part of the floor base of each step | level of the mobile auditorium of the said embodiment in the state expand | deployed to the said normal use position. It is a perspective view which abbreviate | omits and partially cuts out the mobile bleachers of the said embodiment in the state located in the accommodation position. (A) is a top view which shows representatively the arrangement state of the leg part of the floor of each stage of the movable seat of the embodiment in the state located in the storage position, and (b) It is a side view which shows the mobile bleacher of the said embodiment in the state located in the said storage position. It is a top view which expands and shows the A section in FIG. (A), (b) and (c) are the front view, the top view, and the side view which show the state which aligned the leg part of the some floor base of the mobile auditorium of the said embodiment in the horizontal direction. (A) is the disassembled perspective view which shows the latching state of the claw of the latching member which provides a normal latch release | release part, and the stopper member of the leg part of the floor on the 1st step in the movable seat of the said embodiment, (b) FIG. 4 is a perspective view showing a normal engagement release portion provided on the engagement member, and FIG. 4C is a perspective view showing a state in which the normal engagement release portion is lifted by a stopper member of a leg portion of a two-stage floor base. . (A) is the disassembled perspective view which shows the latching state of the claw of the latching member which provides the overlap part latch release | release part, and the stopper member of the leg part of the floor on the 1st step in the movable seat of the said embodiment, (b) ) Is a perspective view showing an overlapped portion engagement release portion provided on the engagement member, and (c) is a perspective view showing a state in which the normal engagement release portion is lifted by a stopper member of a leg of a three-stage floor base. It is. It is a perspective view which abbreviate | omits and partially cuts out the mobile bleachers of the said embodiment in the state expand | deployed to the shortened use position. (A) is a top view which shows representatively the arrangement state of the leg part of the floor of each step of the traveling bleacher seat of the above-mentioned embodiment in the state developed to the shortened use position, and (b) It is a side view which shows the mobile bleacher of the said embodiment in the state expand | deployed to the said shortened use position. It is a perspective view which abbreviate | omits and partially cuts out the mobile bleachers of the said embodiment in the state in the middle of the retreat from the said shortened use position to the said storage position. (A) is a top view which shows representatively the arrangement state of the leg part of each step of the floor of each stage of the mobile auditorium of the embodiment in the state of retreating from the shortened use position to the storage position. FIG. 8B is a side view showing the mobile bleacher of the embodiment in a state of being retreated from the shortened use position to the storage position.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Here, FIG. 1A and FIG. 1B are a plan view and a side view showing an embodiment of the mobile auditorium of the present invention in a state where it is expanded to a normal use position, and FIG. FIG. 3 is a perspective view showing the mobile auditory seat of the embodiment in a state where the mobile auditorium of the embodiment is expanded in a use position, with a part omitted, and FIG. 3 showing the embodiment in a state where the mobile seat is deployed in the normal use position. It is a top view which shows the arrangement | positioning state of the leg part of the floor stand of each step | level of a moving bleacher seat. FIG. 4 is a perspective view showing the mobile seat of the above embodiment in a state where it is positioned at the storage position, with a part thereof omitted and partly cut away. FIG. 5 (a) is positioned at the storage position. FIG. 5B is a plan view representatively showing a part of the arrangement state of the leg portions of the floor of each stage of the mobile auditorium of the embodiment in the state, and FIG. It is a side view which shows the mobile bleachers of the said embodiment.

  The mobile bleachers of this embodiment are used by being installed on the floor surface F of the installation place such as a hall, etc., and the passage floor 1A (8th from the top in FIG. 1, 4 from the top in FIG. 2). Steps) and a plurality of steps (14 steps in the illustrated example) including the uppermost (rearmost) floor pedestal 1B, and on each floor pedestal 1 except for the passage pedestal 1A and the uppermost pedestal 1B. The standing chair type linking chairs 2 arranged side by side in a row, and leg portions 3 that support the respective floor bases 1 so as to be movable in the front-rear direction in a horizontal state and interlock the floor bases 1 with each other. Here, the connecting chair 2 on each floor base 1 is placed between a raised use state shown in FIG. 1 and a flat storage state that has fallen forward through a chair raising device (not shown) driven by a motor. It is mounted on the floor base 1 so that it can be tilted up and down.

  As shown in FIG. 2, each floor base 1 has a penetrating member 4 extending horizontally in the left-right direction, and a rear end portion supported by the penetrating member 4 and extending horizontally in the left-right direction in front of the penetrating member 4. Further, each leg 3 has a top end coupled to a plurality of portions spaced in the longitudinal direction of the penetrating member 4 and extends downward from the penetrating member 4. Four struts (only two are shown in FIG. 2), and four pairs of leg members (only one pair is shown in FIG. 2) coupled to the lower ends of the struts 6 and extending in the front-rear direction. ) 7 and a plurality of moving rollers 8 respectively provided on the legs 7.

  In the mobile auditorium of this embodiment, the lengths of the four columns 6 are different for each floor 1 by the level difference between the floors 1, and the lower ends of the four columns 6 as shown in FIG. The distance between the legs 7 to which the respective parts are joined is narrowed little by little in order from the one of the uppermost floor base 1 closest to the storage position in each pair of legs 7, and the legs 7 are arranged in the left-right direction ( In FIG. 3, the fixing members extend in the front-rear direction along the leg members 7 on the outer floor surfaces F of the outermost leg members 7 of each pair. 9 is fixed, the multi-stage floor bases 1 are mutually moved as shown in FIG. 1 to FIG. Predetermined normal use position where all the connecting chairs 2 can be used as spectator seats by shifting by a predetermined length and expanding in a staircase shape as a whole When, Figure 4, is vertically aligned with one another as shown in FIG. 5, it can be moved forward and backward between a predetermined storage position in the recess P provided on the wall surface W of the installation site.

  Further, the mobile seat of this embodiment includes two floor base drive devices (not shown) arranged on the floor surface F in the recess P in the left-right direction, and each of these floor base drive devices is a motor with a brake. The drum is driven to rotate forward and backward, and a belt-like chain wound on the drum and having wheels on each connecting piece is fed out by the normal rotation of the drum, while the belt is wound on the drum by the reverse rotation of the drum. To function. The leading ends of the belt-like chains are connected to the lowermost floor pedestal 1 located at the foremost part, so that the two floor pedestal driving devices are connected to the lowermost floor pedestal 1 and thus to the multiple tiered floors. The entire table 1 can be moved back and forth.

  FIG. 6 is an enlarged plan view showing a portion A in FIG. 3, and FIGS. 7A, 7B, and 7C show a plurality of floors of the mobile auditorium in the above embodiment. It is the front view, top view, and side view which show the leg part of the stand in the state which aligned in the horizontal direction. FIG. 8A is a perspective view showing a state in which the hook member of the hook member provided with the normal hook release portion and the stopper member of the leg of the upper floor are hooked in the movable seat of the embodiment. 8 (b) is a perspective view showing a normal engagement release portion provided in the engagement member, and FIG. 8 (c) is a state in which the normal engagement release portion is lifted by a stopper member of a leg of the floor on the second level. FIG. 9A is a perspective view showing the engagement of the claw of the engagement member provided with the overlapping portion engagement release portion and the stopper member of the leg portion of the floor on the first stage in the movable auditorium of the embodiment. FIG. 9B is a perspective view showing the overlapping portion engaging release portion provided in the engaging member, and FIG. 9C is a leg of the floor base whose normal engaging release portion is three steps above. It is a perspective view which shows the state lifted with the stopper member of a part.

  Here, on the upper surface of the front end portion of the leg member 7 of each floor base 1, as shown in the drawing, a stopper member 10 that protrudes inward in each pair and functions as a drive member as described later is fixedly provided. The stopper member 10 is, as shown in FIG. 6, when the stopper member 10 is moved forward by the floor base 1 one step below the floor base 1 having the leg member 7 provided at the tip. 7 is one step below, with the floor 1 being one step below the step 7 being shifted by a predetermined distance backward with respect to the leg 7 adjacent to the inside of the leg 7 (upper side in FIG. 6). The stopper 1 is engaged with the front surface of the lower end portion of the column 6 connected to the leg 7 of the floor 1 to stop further displacement, and the floor 1 having the leg 7 with the stopper member 10 provided at the tip thereof is designated as 1 Move forward together with the underfloor platform 1.

  When the uppermost floor base 1 moves forward to a predetermined use position and the front surface of the lower end portion of the column 6 of the floor base 1 and the stopper member 10 provided at the front end portion of the fixing member 9 are engaged, Further forward movement is restrained by the fixing member 9.

  Moreover, as shown in FIG. 7, the engaging member 11 is provided on the outer surface of the lower end of each pair of support columns 6 of the leg 3 that supports each floor 1 except for the passage floor 1A and the uppermost floor 1B. The engaging member 11 is pivotally supported at the lower end of the column 6 by a claw 11a at its front end at the lowered engaging position indicated by the solid line in FIG. 7 (c). The stopper member 10 is engaged with the stopper member 10 adjacent to the floor in the backward direction, and the floor member 1 having the leg member 7 provided at the tip of the stopper member 10 is shifted backward in a stepped manner with respect to the floor member 1 below the first step. Retract and move together with the floor 1 below, and at the raised engagement release position indicated by the phantom line in FIG. 7 (c), the engagement between the claw 11a and the stopper member 10 is released. Then, the floor 1 below is moved backward until it is aligned with the floor 1 in the vertical direction. To enable the.

  Furthermore, except for the engaging member 11 of the floor base 1 one step below the passage base 1A, a downwardly inclined surface 12a is provided on the side surface of each engaging member 11 as shown in FIGS. When the floor base 1 having the leg 7 to which the normal engagement release portion 12 having the engagement member 11 is coupled and the leg member 7 to which the engagement member 11 is provided is moved backward as shown in FIG. The leg member 7 is adjacent to the floor base 1 that is two steps higher than the floor base 1 having the leg member 7 with one leg member 7 placed outside the leg member 7 (lower side in FIG. 7). When aligning in the left-right direction with respect to the leg member 7, the downward inclined surface 12 a of the normal engagement release portion 12 protruding from the engagement member 11 is formed at the front end portion of the leg member 7 of the floor base 1 on the second level. The latch member 11 is lifted in sliding contact with the provided stopper member 10, and the latch member 11 is raised to the latch release position as described above. To release the engagement between the stopper member 10 of the floor bases 1 1a and 1 level upper. Therefore, the stopper member 10 also functions as a driving member that drives the engaging member 11.

  On the other hand, as shown in FIGS. 9 (a) and 9 (b), on the side surface of the engaging member 11 of the floor base 1 that is one step below the passage base 1A, an overlapping portion engaging release portion having a downward inclined surface 13a. As shown in FIG. 9 (c), when the passage base 1A having the legs 7 to which the struts 6 provided with the engaging members 11 are coupled and the legs 7 coupled thereto is moved backward. 7 is placed in the left-right direction with respect to the adjacent leg member 7 by placing two leg members 7 on the outside of the leg member 7 of the floor stand 1 that is three steps above the floor member 1 having the leg member 7. In this case, the downward inclined surface 13a of the overlapping portion engaging release portion 13 projecting from the engaging member 11 is in sliding contact with the stopper member 10 provided at the front end portion of the leg member 7 of the floor 1 on the third level. The hook member 11 is raised to the hook release position as described above, and the claw claw 11a of the hook member 11 and the upper floor 1 To release the engagement of the topper member 10.

  In addition, when the front end of the leg member 7 of the uppermost one-stage floor base 1 is aligned with the front end of the fixing member 9 in the left-right direction, the engaging member 11 of the uppermost one-level floor base 1 is It is lifted by the stopper member 10 provided at the front end of the fixing member 9 to release the engagement between the claw 11a of the engagement member 11 and the stopper member 10 of the uppermost floor base 1.

  Further, as shown in FIGS. 1 (b) and 5 (b), the mobile auditorium of this embodiment includes a folding link type fixing device 14 as a top stop means on the wall surface in the recess P. The fixing device 14 includes a link member that can be bent upward by a joint at the center, a lock that fixes the link member in a slightly bent state by moving the lock member with respect to the link member, and a lock thereof. As shown in FIG. 1 (b), the link member is fixed in a slightly bent state by a lock by having an electric lock mechanism that performs unlocking that enables the link member to be bent largely. The uppermost floor pedestal 1 can be maintained in a stopped state at the use position, and as shown in FIG. 5 (b), the link member can be bent largely by unlocking, and the uppermost floor pedestal 1 is stored. To position It can tolerate backward movement.

  FIG. 10 is a perspective view showing the mobile seat of the above embodiment in a state where the mobile auditorium of the embodiment is expanded in the shortened use position and partially cut away. FIG. 11A is developed in the shortened use position. FIG. 11B is a plan view representatively showing a part of the arrangement of the leg portions of the floor of each stage of the mobile auditorium of the embodiment in the above-described state, and FIG. It is a side view which shows the mobile bleachers of the said embodiment. FIG. 12 is a perspective view showing the mobile seat of the embodiment in the state of being retreated from the shortened use position to the storage position, with a part thereof omitted and partially cut away. FIG. 13 is a plan view representatively showing a part of the arrangement state of the leg portions of the floors of each stage of the moving bleacher seat of the embodiment in the state of retreating from the shortened use position to the storage position. (B) is a side view showing the mobile seat in the embodiment in a state in the middle of retreating from the shortened use position to the storage position.

  In the traveling bleachers of this embodiment having the above-described configuration, the use of the plurality of floors 1 is suspended in the normal use position where the plurality of floors 1 are developed in a staircase shape as a whole. By omitting the engaging member 11 of the passage floor base 1A as the floor base, the passage floor base 1A is retracted until it is vertically aligned with the floor base 1 to be used one level above the passage floor base 1A. It is possible to move, and the floor base 1 to be used one step below the passage floor base 1A of the plurality of floor bases 1 is shifted relative to the passage floor base 1A forward in a stepped manner. By engaging the claw 11a of the hooking member 11 with the stopper member 10, it is hooked in the backward direction, and the uppermost floor base 1 is stopped by the fixing device 14 from the use position where the hook member 11a is developed in a stepwise manner as a whole. In the state, the lowermost floor base 1 is moved backward by the above-mentioned floor base driving device. Accordingly, the stopper member of the floor base 1 to be used is positioned in the retracted position of the floor base 1A for the passage in the retracting direction between the floor base 1 to be used one stage below and the passage base 1A. 10 or the stopper member 10 of the fixing member 9, the floor base 1 used on the first stage is moved backward to the storage position, and the floor base 1 used below the first stage and the passage floor are used. Until the engagement in the backward direction with the base 1A is released, the floor base 1 from the passage base 1A to the lowermost stage moves backward while being displaced in a stepped manner.

  Therefore, according to the traveling bleachers of this embodiment, by setting the uppermost floor pedestal 1 to the stopped state, as shown in FIGS. Since it overlaps in the vertical direction with respect to the floor base 1 to be used one level above and the floor bases 1 above and below the passage floor base 1A are developed in a staircase shape, the multi-level floor base 1 is shortened to the use position. Can be deployed.

  Then, from the shortened deployment position, the stationary device 14 releases the stop state of the uppermost floor base 1, and the plurality of floor bases 1 deployed in a staircase shape are converted into the lowermost floor base 1 by the floor drive device. As shown in FIGS. 12 and 13, first, the uppermost floor pedestal 1B positioned at the rearmost portion is provided in the middle portion of the fixing member 9 in the inward position, as shown in FIGS. The other stopper member 10 is stopped by contact with the rear surface of the lower end of the column 6, and the floor base 1 below the uppermost stage is also stopped at the storage position in order and the fixing member 9 or the floor base above the second stage. The normal engagement release portion 12 is lifted by the stopper member 10 of 1 to release the engagement with the floor base one level below the floor base, thereby storing the floor base 1 to be used one level above the passage base 1A. Move backward to the position of the floor 1 When the overlapping of the overlapping portion engagement release portion 13 by the topper member 10 releases the backward engagement between the floor base 1 used one step below the passage floor base 1A and the passage floor base 1A, the passage base 1A The floor base 1 developed in a stepped manner from the floor base 1 used one step below to the bottom base 1 is moved backward to move from the floor base 1 used one step below the passage base 1A to the bottom step. Stop at the storage position in order up to the floor base 1.

  Therefore, according to the traveling bleachers of this embodiment, even if the passage floor 1A moves backward in conjunction with the floor 1 below it, the floor one level above the passage floor 1A first. Below the platform 1, the floor platform 1 from the passage floor platform 1 </ b> A to the lowest level is sequentially released and aligned in the vertical direction, and then moves to the retreat position sequentially from the uppermost floor platform 1 </ b> B. Therefore, the load on the floor F at the installation site can be sufficiently reduced.

  Furthermore, in the traveling bleachers of this embodiment, each of the plurality of floors 1 is provided with leg portions 3 that are movably supported in the front-rear direction of the traveling bleacher seats in a horizontal state. With the exception of the passage base 1A, it is engaged with the leg 3 of the upper floor 1 and the upper floor 1 is moved backward relative to the floor 1 in a stepwise manner. It has a hook member 11 that is interlocked with the direction, and is aligned with the leg member 3 of the upper floor 1 in the left and right direction on the hook 11 except for the floor 1 to be used one step below the passage floor 1A. A normal engagement release portion 12 is provided for releasing the engagement of the engagement member 11 with the leg portion 3 of the upper floor 1 of the engagement member 11 when the engagement member 11 is moved backward or moved to the storage position. The hanging member 11 of the floor base 1 to be used below the step is connected to the left and right legs 3 of the floor base 1 on the third floor according to the number of stages of the floor base 1A for the passage. Since the overlapping portion engaging release portion 13 for releasing the engagement of the engaging member 11 with the leg portion 3 of the passage floor base 1A is provided when it is moved backward to the position aligned in the direction or the storage position, a plurality of floors When the lowermost floor base 1 is driven backward in the use position where the base 1 is developed in a staircase shape, the passage floor base 1A engages with the leg 3 of the upper floor base 1 and is one step above. Since there is no engaging member 11 for interlocking the floor base 1 in the backward movement direction with the relative position shifted in a stepwise manner with respect to the passage floor base 1A, the floor base 1 above the passage floor base 1A is the staircase. The floor base 1 from the passage floor base 1A to the lowermost stage is moved back in a stepped state, and the passage floor base 1A is one floor higher than that. Stop the backward drive of the bottom floor 1 when it is aligned vertically with the floor 1 under the base 1 The multi-level floor platform 1 is constructed such that the passage floor platform 1A overlaps the floor platform 1 used on the first level of the pathway floor platform 1A in the vertical direction and is above and below the pathway floor platform 1A. The floor base 1 can be arranged at a shortened use position developed in a staircase shape.

  When the uppermost floor base 1B can be moved backward from this shortened use position and the lowermost floor base 1 is driven backward, the floor base 1 used one step below the passage floor base 1A is excluded. The leg 3 supporting each floor is moved back to the position where it is aligned with the leg 3 of the floor 1 on the second level in the left-right direction or to the storage position, so that the leg 3 of the floor 1 is engaged. Since the normal engagement release portion 12 provided on the member 11 releases the engagement with the leg portion 3 of the upper floor 1, the floor 1 stops at the accommodation position in order from the uppermost level, thereby the passage. The leg 3 of the floor base 1 that is one level higher than the floor 1A for the floor is in its accommodation position. First, here, the leg 3 of the floor base 1A for the passage is aligned in the left-right direction, and further the floor base for the passage When aligned in the left-right direction with the leg 3 of the floor base 1 to be used one level below 1A, the hook of the leg 3 of the floor base 1 to be used one level below Since the overlapping portion engagement release portion 13 provided on the member 11 releases the engagement of the engagement member 11 with the leg portion 3 of the passage floor base 1A, all the floor bases 1 below the passage floor base 1A are Stop at the stowed position in order.

  Therefore, according to the mobile bleachers of this embodiment, the simple structure of providing the overlapping portion engaging release portion 13 having a function different from that of the normal engaging release portion 12 is provided below the floor base 1 on the first level of the passage base 1A. It is possible to prevent the inconvenience that the floor bases 1 from the passage base 1A to the lowest stage are sequentially released and aligned in the vertical direction.

  And according to the mobile bleacher of this embodiment, each leg 3 has the leg material 7 extended in the front-back direction of a mobile bleacher, and the normal latch release part 12 and the overlap part latch release part 13 are legs. Since it is driven by the stopper member 10 provided at the front end portion of the material 7 and the engagement with the adjacent leg portion 3 is released, the normal engagement release portion 12 is replaced by the floor base 1 having the normal engagement release portion 12. While being driven by a stopper member 10 provided at the front end of the leg member 7 of the leg 3 of the floor 1 that is two steps above, the overlap portion engagement release portion 13 is changed to the overlap portion engagement release portion. In this case, it is sufficient to be driven by the stopper member 10 provided at the front end portion of the leg member 7 of the leg 3 of the floor 1 that is three steps higher than the floor 1 having 13, so that the functions are different from each other. Easy to use the normal engagement release unit 12 and the overlapped engagement release unit 13 It can be configured.

  Furthermore, according to the mobile bleachers of this embodiment, since the fixing device 14 for maintaining the uppermost floor pedestal 1B out of the plurality of floor pedestals 1 at the use position is provided, It is possible to prevent the swing of the stepped floor 1 in the front-rear direction and to give a sense of stability to the audience.

  As mentioned above, although demonstrated based on the example of illustration, this invention is not limited to the above-mentioned example, It can change suitably within the description range of a claim, For example, on each floor stand 1, Instead of the connecting chair 2, an independent chair may be provided, or the connecting chair 2 and the independent chair including the passage floor 1 </ b> A may be placed so as to be removable.

  Furthermore, although the number of floors is 14 in the illustrated example, it can be appropriately increased or decreased as necessary, and the number of suspended floors such as the passage floor 1A is also illustrated. However, it can be increased as appropriate by overlapping or using a floor base used between them as needed, and the arrangement is not limited to the position in the illustrated example.

  Further, the method of moving each floor base between the normal use position, the storage use position, and the storage position of the movable seat is based on the floor base drive device of the above-described embodiment in which the belt-like chain is moved in and out by forward and reverse rotation of the drum. However, the present invention is not limited to this, and a structure in which a self-propelled device is provided on the bottom floor may be used. Further, the fixing method of the mobile seat at the normal use position or the shortened use position is not limited to the one using the folding link type fixing device 14 of the above embodiment, but the uppermost floor base with the detachable engaging means. A configuration in which the leg portion 3 of 1B is hooked to the floor surface F may be used.

  Thus, according to the traveling bleachers of the present invention, by moving the lowermost floor base backward from the normal use position while the uppermost floor base is stopped, the use suspended floor base becomes the first stage of the floor base. Since it overlaps in the vertical direction with respect to the upper floor used and the upper and lower floors expand in a staircase pattern, the multiple floors can be expanded to the shortened use position. In addition, even if the suspended floor is moved backward in conjunction with the floor below it, the suspended floor from the suspended floor to the bottom is first below the floor that is one level above the suspended floor. The floor base is released in order and aligned in the vertical direction, and then it does not move from the top floor base to the retracted position in order, so the load on the floor at the installation location can be reduced sufficiently. it can.

DESCRIPTION OF SYMBOLS 1 Floor base 1A Passage base 1B Top floor base 2 Connection chair 3 Leg part 4 Penetration material 5 Floor material 6 Post 7 Leg material 8 Roller 9 Fixing member 10 Stopper member 11 Engagement member 11a Claw 12 Normal engagement release part 12a Downward inclined surface 13 Overlapping portion hook release portion 13a Downward inclined surface 14 Fixing device
F Floor P Recess W Wall

Claims (4)

The multi-level floor base is interlocked with each other between the use position that expands in a staircase as a whole and the storage position that is aligned in the vertical direction as the lowermost floor base moves forward and backward. In the moving bleachers that move back and forth and move from the floor to the storage position in order when moving backward from the use position to the storage position,
In the use position that expands in a staircase shape as a whole, it is possible to move backwards until the dormant floor stand of the plurality of steps is vertically aligned with the use stand on the first step of the floor stand. In addition, the floor base to be used one step below the use suspended floor base among the plurality of floor bases is engaged in the backward direction at a relative position shifted forwardly with respect to the use suspended floor base. ,
As the lowermost floor pedestal moves backward from the use position that expands in a stepwise manner, the lowermost floor pedestal and the use suspension are used. The moving bleacher seat, wherein the engagement in the backward direction with the floor is released by the floor base used on the first stage located at the storage position. Legs that support the plurality of floors in a horizontal state so as to be movable in the front-rear direction of the moving seat,
The legs of the plurality of floors are engaged with the legs of the upper floors except for the use suspended floors, and the upper floors are shifted stepwise with respect to the floors. It has a hooking member that interlocks in the backward movement direction with the relative position.
Except for the floor base to be used one level below the suspended floor base, the hook member is moved back to a position aligned with the leg of the floor base on the second level in the left-right direction or to the storage position. , Providing a normal engagement release portion for releasing the engagement with the leg of the floor on the first stage,
A position or a storage position that is aligned in the left-right direction with the leg of the floor base that is three or more steps high according to the number of steps of the use-free floor base on the hooking member of the floor base to be used one step below the use-free use floor base The moving bleacher seat according to claim 1, further comprising an overlapping portion engaging release portion for releasing the engagement of the engaging member with the leg portion of the suspended bed base when moving backward. Each of the legs has legs that extend in the front-rear direction of the moving bleachers,
The mobile seat according to claim 2, wherein the normal engagement release portion and the overlapping portion engagement release portion are driven by a driving member provided at a front end portion of the leg member to release the engagement. .   The mobile bleacher according to any one of claims 1 to 3, further comprising uppermost stop means for maintaining the uppermost floor stand in a stopped state at the use position among the plurality of floor stands. .

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