JP3913256B2 - Bogie braking device - Google Patents

Description

  The present invention relates to a cart braking device for preventing a seat from moving in a telescopic deployment type bleacher seat when the bleacher seat is in a use state or a storage state.

  Conventionally, telescopic seats used at various facilities such as multipurpose halls and gymnasiums are known. This telescopic exploration seat has a plurality of floors with different heights with seats, and when used, each floor with different heights is moved forward and placed on the staircase to make a stair-like viewing The seats are configured to be stored in a compact manner by moving each floor to the rear and storing the other floors so as to overlap each other below the uppermost floor.

And among these telescopic deployment seats, for the manual type that moves each floor base by manually moving the bottom floor base, an electric type equipped with a control device for moving the floor base Since the position of the floor pedestal is not controlled by the control device, as in the case of the bleachers, the floor pedestal is not moved in the use state in which the spectator seat is configured or in the storage state in which the respective floor pedestals are stacked. A mechanism for braking the carriage that supports the floor was required. Therefore, as a braking device for braking the carriage, there has been proposed an apparatus for braking the carriage by bringing a braking body into contact with a wheel positioned at the foremost side of the carriage that supports the lowermost floor platform. (For example, refer to Patent Document 1).
No. 7-56458

  However, in the braking device described above, a skirt plate having a lower end pivotably pivoted is provided in front of the lowermost floor base, and the skirt plate and the braking body are connected to a plurality of cams, slide frames, and the like. By connecting via a link mechanism constituted by members and manually pushing down the skirt plate from the position where it is inverted upward, the brake body is pressed against the wheel to prevent the wheel from rotating. It was configured as follows. For this reason, there is a problem that parts such as a cam and a slide frame are worn or damaged by repeatedly operating the link mechanism, and in order to prevent this, it is necessary to periodically replace the parts. Also, when setting up the bleachers, in order to ensure that the brakes are pressed against the wheels, the position of the brakes must be fine-tuned for each bleacher and the positional relationship between the brakes and the wheels must be checked. There was a problem that workability was not good.

  The present invention has been made in view of such problems, and is improved in maintainability in a cart braking device that is provided in a manually-operated telescopic deployment bleaching seat and brakes a cart equipped with a seat in a used state or a stored state. The purpose is to reduce the work process during installation.

The invention according to claim 1, which is made to achieve such an object, comprises a plurality of floors with different heights and equipped with seats, and each other floor is placed below the uppermost floor when stored. The floors are stored in a stack, and in use, the bottom floor is pulled out, so that each floor is expanded in turn to form a staircase-shaped bleacher. Is a carriage braking device for braking the carriage that supports the lowermost floor pedestal, and a plurality of wheels that are pivotally supported by the carriage that supports the lowermost floor pedestal, A brake body that stops rotation of the wheel by being in contact with the outer peripheral surface of the wheel disposed on the side from which the floor base is pulled out, and fixed to the carriage, and the brake body is applied to the outer peripheral surface of the wheel. Supporting part that supports the displacement between the contact position and the non-contact position. A biasing member that biases the braking body in a direction to contact the outer peripheral surface of the wheel, and a biasing member that causes the braking body to contact the wheel; and is manually operated from the outside and engages the braking body during operation. And an actuating mechanism for displacing the braking body against the urging force of the urging member, wherein a part of the braking body is bent in a hook shape so that both end surfaces face the same direction, and one end side is The rod-shaped member is inserted into an insertion hole formed in the support portion and is brought into contact with the outer peripheral surface of the wheel at the other end to stop the wheel. The biasing member is the rod-shaped member. Is inserted, and one end engages with the support portion and the other end engages with a spring engagement portion provided on the rod-shaped member, so that one end of the rod-shaped member contacts the outer peripheral surface of the wheel. , A coil spring for urging the braking body, and the support portion Is fixed at a position not beyond the end face on the side where the car of the nest is withdrawn, one end of the rod-shaped member, which supports the braking portion such that the nest is in contact from the side to the wheel to be drawn that It is characterized by.

  In such a truck braking device, the braking body that stops the rotation of the wheel is supported by the support portion so as to be displaceable between a position in contact with the outer peripheral surface of the wheel and a position in which the wheel does not contact, and an urging member By this, it is urged in the abutting direction and is in contact with the wheel. In other words, since the braking body is brought into contact with the wheel by the biasing force of the biasing member and the rotation of the wheel is stopped, compared to the case where the braking force is applied to the wheel via the link mechanism from the outside, The wear and breakage of each part can be reduced, and it becomes unnecessary to replace the parts regularly, thereby improving the maintainability. Further, by providing the urging member, it is not necessary to set the positional relationship between the braking body and the wheel with high accuracy, and the adjustment work at the time of installation can be eliminated.

  By operating the operating mechanism from the outside, the braking body can be displaced against the urging force of the urging member, so that the wheel can be easily rotated by releasing the contact between the braking body and the wheel. Can be convenient.

Further, the urging member is constituted by a coil spring , and this coil spring is inserted into a rod-like member constituting the braking body, and is supported by engaging with a spring engaging portion and a support portion formed on the rod-like member. Therefore, it is not necessary to separately provide a part for supporting the urging member, and it is possible to urge the brake body in the direction in which the brake body comes into contact with the outer peripheral surface of the wheel without increasing the number of parts.

By the way, the rod-shaped member constituting the brake body may be formed in a straight line, and the brake body may be supported by providing the support portion on the traveling direction side of the lowermost carriage, but there is no space in the traveling direction of the carriage However, there is a problem that a support part cannot be provided. Further, even if the support portion is provided, the support portion protrudes forward from the end surface of the floor base, and there is a risk that the support portion may be caught by a leg of a person using the seat.

On the other hand, in the cart braking device of the present invention, the rod-shaped member constituting the braking body is bent in a hook shape so that both end surfaces face in the same direction, so that the position does not exceed the end surface on the traveling direction side of the cart. Since a support part can be provided in this and a braking body can be supported by this support part, it is convenient.

In the truck braking device according to claim 1 , as described in claim 2 , the brake body is provided with a first protrusion, and the operating mechanism is a first elongated hole elongated in the displacement direction of the brake body. And a link member that is slidably inserted into the first elongated hole, and is connected to the link member in a direction that resists the biasing force of the coil spring by an external operation. By displacing, the first protrusion may be brought into contact with one end of the first elongated hole, and the brake body may be configured by a lever that is displaced against the urging force of the coil spring.

  In this case, the lever is displaced in a direction against the urging force of the coil spring, so that the brake body is displaced, and the contact between one end of the rod-shaped member constituting the brake body and the wheel can be released, so that the operability is good. .

Further, in the cart braking device according to claim 2 , as described in claim 3 , the spring engaging portion has an insertion hole through which a rod-shaped member constituting the braking body is inserted, and is orthogonal to the insertion hole. A screw hole penetrating the insertion hole; and a fixing screw screwed into the screw hole to position and fix the spring engaging portion with respect to the rod-shaped member. The first protrusion is configured by the fixing screw. It may be.

  In this case, since the spring engaging portion is positioned and fixed with respect to the rod-shaped member by screws, the position of the spring engaging portion can be freely moved, and the support portion engaged with the coil spring; It is possible to easily change the distance from the spring engaging portion, and it is possible to adjust the urging force of the coil spring that causes the braking body to contact the wheel. Moreover, since the braking body is composed of a combination of simple parts, the machining cost of the parts can be suppressed.

And the cart brake device according to claim 2 or claim 3 , when the banquet seat is formed on the cart supporting the lowermost floor platform as described in claim 4 , Engaging with the second protrusion provided on the carriage that supports the floor, and providing an engaging portion for fixing the lowest floor to the second floor, It is connected to the link member, and when the link member is displaced in a direction against the urging force of the coil spring, the link member may be configured to be displaced in a direction to release the engagement with the second protrusion.

  In this case, since the carts individually supporting the lowermost stage and the second stage floor pedestal are provided with the engaging portion and the second protrusion, respectively, when the bleacher seat is configured, the engagement is made. The part and the second protrusion can be engaged with each other so that they do not move with each other. Further, if the lever is displaced against the urging force of the coil spring in this state, the brake body is displaced to a position not in contact with the wheel, and the engagement portion is released from the engagement with the second protrusion. Therefore, it is not necessary to separately perform the operation of releasing the contact between the braking body and the wheel and the operation of releasing the engaging portion, which is convenient.

Furthermore, the cart braking device according to any one of claims 2 to 4 is, as described in claim 5 , provided in the lowermost floor platform, below the end surface on the side from which the floor platform is pulled out. The skirt plate is pivotably pivoted between a position where it is suspended downward and a position where it is inverted upward, and this skirt plate is connected to a link member so as to function as a lever. May be.

  In this case, when the skirt plate is provided below the end surface on the side from which the floor is pulled out, the skirt plate is used as a lever, and the skirt plate is rotated upside down so that the braking body does not contact the wheel. Therefore, it is not necessary to provide a new lever, and the number of parts can be reduced. Further, the skirt plate is located below the end surface of the floor and is disposed at a position where it can be easily operated from the outside, so that it can be easily rotated upward, which is convenient.

On the other hand, in the cart braking device according to any one of claims 2 to 4 , as described in claim 6 , the support portion is formed with a third protrusion, and the lever is formed with the second long hole. The slide member is slidably connected to the link member and is inserted into the second elongated hole so that the third protrusion is slidable. You may comprise from the handle | steering-wheel which rocks a slide member by operation.

  In this case, by pulling the handle upward, the third protrusion slides through the second long hole formed in the slide member, and the link member is displaced in a direction against the urging force of the coil spring. The contact between the braking body and the wheel can be released by a simple operation, and the operability is good. In addition, since the lever is simply constituted by a plate-like slide member and a handle, the cost of parts can be reduced.

Embodiments of the present invention will be described below with reference to the drawings.
[First embodiment]
The bleaching seat 1 of the present embodiment constitutes a staircase-like bleaching seat by manually pulling a floor base equipped with a seat out of the telescopic spreading seats set up in a facility such as a gymnasium. In a use state used as a bleacher, or in a storage state in which the other floor bases are stored so as to overlap each other below the uppermost floor base, the carriage that supports each floor base is braked. Therefore, the truck braking device of the present invention is provided.

  FIG. 1A is a side view of the viewing seat 1 according to the present embodiment in use, and FIG. 1B is a side view of the viewing seat 1 according to the present embodiment stored. In all the drawings used in the examples, the left side indicates the front of the bleacher seat (hereinafter, front), and the right side indicates the rear of the bleacher seat (hereinafter, rear).

  As shown in FIG. 1, the bleacher 1 according to the present embodiment includes a seat 10, a plurality of floor bases 12 having different heights, and a plurality of floor bases 12 having different heights and connected to each other. Rotation of the wheel 16 that is provided in front of the dolly 14 and the lowermost dolly 14a that supports the lowermost dolly 14a and is pivotally supported by the dolly 14a is the most forward wheel 16. And a truck braking device (see FIG. 2) for stopping.

  The seat 10 is formed by combining two long plate members (a seat plate 10a and a curtain plate 10b) so as to form a right angle, the seat plate 10a is arranged in parallel with the floor 12 and the curtain 10b is a floor base. 12 is supported by the support member 10c in front of the floor base 12 so as to be vertically arranged at a position covering the front end portion. A seat 22 wider than the other seats 10 is provided behind the uppermost floor 12b.

  On the other hand, below the curtain plate 10b of the seat 10 provided on the lowest floor 12a, a skirt plate 24 having substantially the same shape as the curtain plate 10b is connected by a hinge 46 (see FIG. 2) and suspended. Is provided so as to be able to swing between the folded state and the folded state so as to overlap the curtain plate 10b, thereby preventing foreign matter such as dust from entering the lower portion of the floor 12. . The skirt plate 24 is urged by a coil spring (not shown) at a position inverted upward, and is held in an inverted state.

  The carriage 14 includes two parallel carriage frames, and is configured such that the widths of the two carriage frames are different from each other so that all the floor stands 12 are stored below the uppermost floor stand 12b. ing. The uppermost floor pedestal 12b is supported by the uppermost trolley 14b having the widest width between the frames, and the width between the frames decreases in order as it goes to the lower tier, and the lowermost floor pedestal 12a is the largest between the frames. Is supported by a lowermost carriage 14a.

  A first lock plate 18 is swingably provided behind the lowermost carriage 14a that supports the lowermost floor base 12a, and a second lock plate is provided behind the second and subsequent carriages 14a. 20 is swingably provided, and a hook 50 that engages with the first lock plate 18 or the second lock plate 20 in the use state of the bleacher seat 1 is provided in front of the second and subsequent carriage frames. Projected.

  FIG. 2 is a side view showing the configuration of the cart braking device provided in the lowermost cart 14a of the bleacher seat 1 of the present embodiment, and FIG. 3 shows the configuration of the cart braking device provided in the lowermost cart 14a. FIG. 4A is an enlarged view showing a state of the brake rod 30 when the carriage is braked, and FIG. 4B is an enlarged view showing a state of the brake rod 30 when the carriage is moved.

  As shown in FIG. 2, the truck braking device rotates the wheel 16 by abutting against the outer peripheral surface of the wheel 16 disposed in the foremost position among the plurality of wheels that are pivotally supported by the lowermost carriage 14 a. And a support plate 32 that is fixed to the lowermost carriage 14a and supports the brake rod 30 so as to be displaceable between a position where it abuts against the outer peripheral surface of the wheel 16 and a position where it does not abut. The brake rod 30 is urged in the direction in which the brake rod 30 comes into contact with the outer peripheral surface of the wheel 16, and a coil spring 36 for bringing one end of the brake rod 30 into contact with the wheel 16 and the brake rod 30 are inserted into the brake rod 30. A slide block 38 that is positioned and fixed by screws, an interlocking link 40 that displaces the slide block 38 in a direction against the urging force of the coil spring 36, and a skirt plate connecting plate for connecting the interlocking link 40 to the skirt plate 24. 42, A lock plate coupling plate 52 that is coupled to the lower carriage 14a and is pivotally supported by a pin 18a so as to be swingable, and swings with the first lock plate 18 about the pin 18a. The movement of the plate connecting plate 52 and the interlocking link 40 is interlocked so that the first lock plate 18 is swung, and the adjustment is fixed to the connecting rod 48 and brought into contact with the first lock plate 18. It is comprised from the link 54 and fastening components, such as a volt | bolt and a nut for connecting each member.

  The brake rod 30 is formed such that one end of a metal round bar is bent in a hook shape, and the bent portion and the original portion form a straight portion parallel to each other, and the end face of the straight portion faces in the same direction. Has been.

  The support plate 32 is a sheet metal part having a U-shaped cross section formed by bending both end portions of a rectangular plate material, and the brake rod 30 can be inserted into the mutually facing surfaces formed by bending. Insertion holes 32a and 32b are formed respectively. The plane perpendicular to the pair of opposed surfaces is welded to the side surface of the carriage frame so that the center line passing through the two insertion holes 32a and 32b is parallel to the traveling direction of the wheel 16, and the bottom carriage 14a. It is fixed to.

  The slide block 38 is a metal rectangular parallelepiped block, and an insertion hole 38a through which the braking rod 30 can be inserted is formed on one surface, and a surface orthogonal to the surface is inserted into the insertion hole 38a. A screw hole 38b is formed so as to penetrate therethrough.

  The interlocking link 40 is made of a long thin metal plate, and has a long hole 40a that can slide the bolt 44a along the longitudinal direction at the center, and the skirt plate connecting plate 42 or 42 at both ends, respectively. Bolts 44b and 40c through which the bolts 44b and 44c for pivotally supporting the connecting rod 48 are inserted.

  The skirt plate connecting plate 42 is a sheet metal part having a U-shaped cross-section formed by bending both ends of a rectangular plate material, and swings one end of the interlocking link 40 on one end side of a pair of opposed surfaces. A bolt insertion hole 42a through which a bolt 44b that is pivotally supported is inserted is formed, and a bolt insertion hole 42b to be connected to the skirt plate 24 with a bolt and a nut is formed on a surface orthogonal to this surface. There are two holes.

  The connecting rod 48 has a plate piece welded to one end of a thin metal rod, and a bolt insertion hole 48a through which a bolt 44c pivotally supporting one end of the interlocking link 40 is inserted. It is installed.

  The lock plate connecting plate 52 is a sheet metal part in which a rectangular plate material is bent at a center line parallel to the longitudinal direction, and the cross section is formed in an L shape, and the first lock plate 18 and the connecting rod are interposed on one side. On the other side, an insertion hole 52a through which the round bar portion of the connecting rod 48 is slidably inserted is formed on the other surface.

  The adjustment link 54 has a cylindrical shape, and an insertion hole 54a through which the connecting rod 48 can be inserted is formed in the axial direction of the cylinder, and a screw hole 54b is formed from the outer peripheral surface so as to penetrate the insertion hole. .

  In this embodiment, the first lock plate 18 corresponds to the engaging portion of the present invention, and the brake rod 30 and the slide block 38 correspond to the brake body of the present invention (the brake rod 30 corresponds to the rod-shaped member of the present invention). The slide block 38 corresponds to the spring engaging portion of the present invention), the support plate 32 corresponds to the support portion of the present invention, the interlocking link 40 corresponds to the link member of the present invention, and the long hole 40a is The bolt 44a corresponds to the first protrusion of the present invention, and the hook 50 corresponds to the second protrusion of the present invention.

Next, a method for assembling the carriage braking device will be described.
First, as shown in FIG. 3, the longer one of the brake rods 30 so that the coil spring 36 engages the slide block 38 with the front surface of the pair of opposed surfaces of the support plate 32. The straight portion is inserted from the front of the carriage frame in the order of the insertion hole 32a, the coil spring 36, the insertion hole 38a, and the insertion hole 32b, and the other end is inserted through the front of the carriage frame constituting the bottom carriage 14a. 14c is inserted. Next, the bolt 44 a is inserted into the long hole 40 a formed in the interlocking link 40 and screwed into the screw hole 38 b formed in the slide block 38, and the tip is brought into contact with the brake rod 30. And the brake rod 30 are coupled at a predetermined position.

  On the other hand, a skirt plate connecting plate 42 is disposed on the back surface of the skirt plate 24, and bolts are inserted into bolt insertion holes 24a formed in the skirt plate 24 and bolt insertion holes 42b formed in the skirt plate connecting plate 42. And fasten with nuts. Next, when the skirt plate connecting plate 42 is viewed from the front, the interlocking link 40 is overlapped on the surface located on the left side, and the bolt insertion hole 40b formed at one end of the interlocking link 40 and the skirt plate connecting plate 42 are opposed to each other. Bolts 44b are sequentially inserted into bolt insertion holes 42a drilled in a pair of surfaces, and the right side is fastened with a nut.

  Next, one adjustment link 54 is inserted into one end side of the connecting rod 48, and a bolt is screwed into the screw hole 54 b of the adjusting link 54, and the adjustment link 54 is connected to a predetermined position of the connecting rod 48 with this bolt. To fix. Then, the end of the connecting rod 48 on the round bar side is inserted into an insertion hole 52 a formed in the lock plate connecting plate 52, and another adjustment link 54 is inserted so as to sandwich the lock plate connecting plate 52. Then, like the other one, it is fixed in place with a bolt. Next, a bolt 44c is inserted into a bolt insertion hole 48a drilled in the other end of the connecting rod 48 and a bolt insertion hole 40c drilled in one end of the interlocking link 40, and fastened with a nut. This completes the assembly of the truck braking device.

  In the truck braking device for the spectator seat 1 configured as described above, the braking rod 30 for stopping the rotation of the wheel 16 is composed of a rod-like member having one end bent in a hook shape, and the slide block 38 is coupled by a bolt 44a. Has been. The braking rod 30 is inserted into the insertion holes 32a and 32b formed in the support plate 32 and the coil spring 36, and a position where one end of the braking rod 30 comes into contact with the outer peripheral surface of the wheel 16 and a position where the one does not come into contact. When the skirt plate 24 is suspended from the curtain plate 10b of the seat 10 as shown in FIG. 4A, the brake rod 30 is connected to the support plate 32. The coil spring 36 engaged with the slide block 38 is urged in the direction in which it abuts against the wheel 16 and abuts against the wheel 16.

  The bolt 44a is slidably inserted into the long hole 40a formed in the interlocking link 40, and the interlocking link 40 is connected to the skirt plate 24 via the skirt plate connecting plate 42. As shown in FIG. 4 (b), when the skirt plate 24 is folded upward, the interlocking link 40 is displaced in a direction against the urging force of the coil spring 36, and the bolt 44a is placed at one end of the long hole 40a. As a result, the brake rod 30 is displaced against the urging force of the coil spring 36.

  Further, when the bleacher seat 1 is configured, the lowermost carriage 14a engages with a hook 50 provided on the second carriage, and the lower carriage 14a with respect to the second carriage. Since the first lock plate 18 is fixed to the interlocking link 40 via the connecting rod 48, the skirt plate 24 is folded to a position where the skirt plate 24 is inverted upside down. As a result, when the interlocking link 40 is displaced in the direction against the urging force of the coil spring 36, the connecting rod 48 is displaced forward, and the rear adjustment link 54 is formed with the insertion hole 52a of the lock plate connecting plate 52. The first lock plate 18 is pivoted upward via the lock plate connecting plate 52, and the engagement between the first lock plate 18 and the hook 50 is released.

  For this reason, since the brake rod 30 is brought into contact with the wheel 16 by the urging force of the coil spring 36, the parts are worn and damaged as compared with the case where the brake rod 30 is pressed against the wheel 16 by an external force through a link mechanism or the like. Maintenance can be improved because parts can be reduced and parts need not be replaced regularly. Further, since the coil spring 36 is provided, it is not necessary to set the positional relationship between the brake rod 30 and the wheel 16 with high accuracy, and the adjustment work at the time of installation can be eliminated.

  Further, since the coil spring 36 is inserted into the brake rod 30 and supported by being engaged with the slide block 38 and the support plate 32, there is no need to separately provide a part for supporting the coil spring 36. Without increasing the number of parts, it is possible to apply a biasing force in the direction in which the braking rod 30 is brought into contact with the outer peripheral surface of the wheel 16, and the braking rod 30 is hooked so that both end surfaces face in the same direction. Since it is bent, the support plate 32 can be fixed to the side surface of the carriage frame constituting the lowermost carriage 14a, and the braking rod 30 can be supported by a portion different from the traveling direction side of the carriage.

  Further, by connecting the skirt plate 24 and the interlocking link 40 and folding the skirt plate 24 to a position where the skirt plate 24 is inverted upward, the interlocking link 40 is displaced in a direction against the urging force of the coil spring 36, and the bolt 44a is elongated. Since the brake rod 30 can be displaced against the urging force of the coil spring 36 by being brought into contact with one end of 40a, the contact between one end of the brake rod 30 and the wheel 16 can be released by a simple operation, and the skirt The plate 24 is conveniently located below the curtain plate 10b of the seat 10 and is arranged so that it can be easily operated from the outside.

  Further, since the slide block 38 is positioned and fixed with respect to the brake rod 30 by the bolt 44a, the position of the slide block 38 can be freely moved, the support plate 32 engaged with the coil spring 36, the slide The distance from the block 38 can be easily changed, and the urging force of the coil spring 38 that makes the brake rod 30 contact the wheel 16 can be adjusted. And since the brake rod 30 and the slide block 38 are processed products of a simple shape, the processing cost of components can be held down.

  Furthermore, since the lowest stage carriage 14a includes the first lock plate 18 connected to the interlocking link 40 by the connecting rod 48, and the second stage carriage includes the hook 50, when the bleacher seat 1 is configured. In addition, the first lock plate 18 and the hook 50 can be engaged with each other so that they do not move with each other. In addition, by folding the skirt plate 24 to a position where the skirt plate 24 is inverted upward, the brake rod 30 is displaced to a position where it does not come into contact with the wheels 16 and the first lock plate 18 is displaced in a direction in which the engagement with the hook 50 is released. Therefore, there is no need to separately perform an operation for releasing the contact between the brake rod 30 and the wheel 16 and an operation for releasing the engagement between the first lock plate 18 and the hook 50, which is convenient.

  Therefore, in the bleacher seat 1 equipped with such a cart braking device, when used, the braking of the bottom cart 14a can be released by folding the skirt plate 24 upward, and the bottom platform 12a is pulled forward. As a result, the second and subsequent floors 12 are sequentially pulled out, and as shown in FIG. 1A, a stair-shaped viewing seat 1 with different heights of the seat 10 is formed, and the skirt plate 24 is replaced with the skirt plate. By returning to the position where 24 is drooped, the lowermost carriage 14a can be braked again. At this time, the connecting rod 48 moves rearward in conjunction with the skirt plate 24, so that the front adjustment link 54 comes into contact with the surface of the lock plate connecting plate 52 where the insertion hole 52a is formed from the front, The first lock plate 18 is swung downward via the plate connecting plate 52, and the first lock plate 18 engages with a hook 50 provided on the second stage carriage and is locked so as not to move relative to each other.

  Each second lock plate 20 provided on each carriage 14 in the second and subsequent stages is automatically attached to the hook 50 formed on the preceding carriage 14 when each carriage 14 is pulled out to use. Engage and lock to prevent movement relative to each other.

  On the other hand, at the time of storage, the skirt plate 24 is folded again upward to release the braking of the lowermost carriage 14a. At the same time, the hook 50 provided in front of the second carriage and the first lock plate 18 Since the engagement is released, by pushing the lowermost floor pedestal 12a backward, the second and subsequent floor pedestals 12 are sequentially pushed in, as shown in FIG. All the other floor bases 12 are accommodated below the uppermost floor base 12b so that the curtain plates 10b covering the same form one surface. Then, by returning the skirt plate 24 to the position where the skirt plate 24 is suspended, the lowermost carriage 14a is braked, and a stable storage state can be achieved.

Note that the hook 50 between the second and uppermost trolleys and the second lock plate 20 are engaged when the floor pedestal 12 is pushed rearward so that one part of the rear trolley 14 is second. It is automatically released by engaging the lock plate 20.
[Second Embodiment]
Next, another form of the seat 5 will be described. The bleacher seat 5 of the present embodiment (second embodiment) is a type that does not have the skirt plate 24 of the bleacher seat 1 of the first embodiment, and instead of the skirt plate 24, the brake rod 30 is displaced forward, and the wheel 16 A release lever 62 for releasing contact between the brake rod 30 and the brake rod 30 is provided. For this reason, although the part which comprises a trolley | brake braking device differs in part from the bleacher seat 1, since the other structure is the same as the bleacher seat 1, in the bleacher seat 5 of a present Example, it is the viewing of 1st Example. The same parts as those of the seat 1 are denoted by the same reference numerals and the description thereof is omitted, and only different parts will be described below.

  FIG. 5 is a side view showing the configuration of the cart braking device provided in the lowermost cart 14a of the attendant seat 5 of this embodiment, and FIG. 6 shows the configuration of the cart braking device provided in the lowermost cart 14a. FIG. 7A is an enlarged view showing a state of the braking rod 30 during carriage braking, and FIG. 7B is an enlarged view showing the state of the braking rod 30 during movement of the carriage.

  As shown in FIG. 5, the cart braking device is brought into contact with the outer peripheral surface of the wheel 16 disposed in the foremost position among the plurality of wheels 16 that are pivotally supported by the bottom cart 14 a. A brake rod 30 that stops rotating and a support plate 58 that is fixed to the lowermost carriage 14a and supports the brake rod 30 so as to be displaceable between a position where it abuts against the outer peripheral surface of the wheel 16 and a position where it does not abut. Then, the brake rod 30 is urged in the direction in which the brake rod 30 comes into contact with the outer peripheral surface of the wheel 16, and the coil spring 36 that brings the brake rod 30 into contact with the wheel 16 and the brake rod 30 are inserted into the screw. The slide block 38 is fixed so that it can be positioned, the slide guide 60 displaces the slide block 38 in a direction against the urging force of the coil spring 36, and the slide guide 60 is displaced forward by pulling upward. The lock lever connecting plate 52 coupled with the release lever 62 and the first lock plate 18 and swinging together with the first lock plate 18, and the movement of the lock plate connecting plate 52 and the slide guide 60 are linked to each other. 1 A connecting rod 48 for swinging the lock plate 18 and fastening parts such as bolts and nuts for connecting each member.

  The support plate 58 is a sheet metal part having two right-angled portions formed by bending both ends of a rectangular plate material, and two pairs of opposed surfaces. Further, insertion holes 58a and 58b into which the brake rod 30 can be inserted are formed in one set of the pair of opposed surfaces. On the other hand, a screw hole 58c for attaching the release lever 62 is formed in one surface of the pair of other surfaces facing each other, and the side surface of the carriage frame is formed by the two insertion holes 58a, The center line passing through 58b is welded and joined to the lowermost carriage 14a so that it is parallel to the traveling direction of the wheels 16.

  The slide guide 60 is a sheet metal part having a U-shaped cross section by bending both ends of a rectangular plate material. The slide guide 60 accommodates the slide block 38 inside the U-shape, and the support plate 58 It is configured to be slidable in a state of being sandwiched from above and below by a pair of surfaces facing each other. A long hole 60a in which the bolt 64a can be slid along the longitudinal direction is formed in the central portion of the surface orthogonal to the pair of opposing surfaces, and the release lever 62 or Bolts 64b and 60c through which the bolts 64b and 64c for pivotally supporting the connecting rod 48 are inserted.

  The release lever 62 includes a substantially trapezoidal plate-like slide portion 62a and an L-shaped handle 62b welded to the slide portion 62a. A bolt insertion hole 62d for inserting a release lever 62 and a bolt 64b for pivotally supporting one end of the slide guide 60 is formed in one corner of the trapezoid in the slide portion 62a. A handle 62b is coupled to the corner and the diagonal position so that one side protrudes vertically from the slide portion 62a. And the bolt 64d can be slid so that the corner | angular part in the other two diagonal positions may be tied, and the long hole 62c by which one end was bent is formed. If the end of the elongated hole 62c on the bent side is an end D and the other end is an end C, the distance between the bolt insertion hole 62d and the end C is as follows: It is formed to be longer than the distance between the end portion D.

  In this embodiment, the braking rod 30 and the slide block 38 correspond to the braking body of the present invention (the braking rod 30 corresponds to the rod-shaped member of the present invention, and the slide block 38 corresponds to the spring engaging portion of the present invention. The slide guide 60 corresponds to the link member of the present invention, the long hole 60a corresponds to the first long hole of the present invention, the release lever 62 corresponds to the lever of the present invention, and the slide portion 62a corresponds to the present invention. The long hole 62c corresponds to the second long hole of the present invention, the bolt 64a corresponds to the first protrusion of the present invention, and the bolt 64d corresponds to the third protrusion of the present invention.

Next, a method for assembling the carriage braking device will be described.
First, as shown in FIG. 6, the longer straight portion of the brake rod 30 is arranged so that the coil spring 36 is engaged with the surface of the support plate 58 in which the insertion hole 58a is formed and the slide block 38. The insertion hole 58a, the coil spring 36, the insertion hole 38a, and the insertion hole 58b are inserted in this order from the front of the carriage frame, and the other end is inserted into the insertion hole 14c formed in the front of the carriage frame. Next, the bolt 64a is inserted into the long hole 60a formed in the slide guide 60, and the tip of the bolt 64a is brought into contact with the brake rod 30 through the screw hole 38b formed in the slide block 38. The slide block 38 and the brake rod 30 are coupled. In this state, the slide guide 60 is fitted to the support plate 58 so as to be slidable back and forth so that the support plate 58 is sandwiched from above and below by a pair of opposing surfaces of the slide guide 60. The inner space formed by the slide guide 60 and the support plate 58 is housed slidably forward and backward.

  Next, the bolt 64b is inserted into the bolt insertion hole 62d formed in the release lever 62, and fastened to the screw hole 60b disposed in front of the slide guide 60 via a spacer. Then, the bolt 64d is inserted into the long hole 62c formed in the slide portion 62a, and fastened to the screw hole 58c formed in the support plate 58 via a spacer.

  On the other hand, one adjustment link 54 is inserted into one end side of the connecting rod 48, a bolt is inserted into the screw hole 54b, and the connecting rod 48 is fixed to a predetermined position with this bolt. Then, the other end of the connecting rod 48 is inserted into the insertion hole 52a formed in the lock plate connecting plate 52, and the other one adjusting link 54 is inserted so as to sandwich the lock plate connecting plate 52. Like one, it is fixed in place with a bolt. Next, a bolt 64c is inserted into a bolt insertion hole 48a drilled in the other end of the connecting rod 48 and a bolt insertion hole 60c drilled in one end of the slide guide 60, and fastened with a nut. This completes the assembly of the truck braking device.

  In the cart braking device configured as described above, the release lever 62 includes a plate-like slide portion 62a having a bolt insertion hole 62d and a long hole 62c, and a handle 62b coupled to the slide portion 62a. The slide portion 62a is slidably connected to the slide guide 60, and a bolt 64d is slidably inserted into the long hole 62c and screwed into a screw hole 58c formed in the support plate 58. ing. Then, as shown in FIG. 7 (b), the handle 62b is pulled up from the position where the handle 62b is arranged horizontally as shown in FIG. The bolt 64d slides from the end C to the end D of the long hole 62c, and the distance between the bolt insertion hole 62d and the end C is greater than the distance between the bolt insertion hole 62d and the end D. Since the slide guide 60 is formed to be long, the slide guide 60 is displaced in a direction against the urging force of the coil spring 36. Further, since the end D of the long hole 62c is bent, this portion and the bolt 64d are engaged with each other, the bolt 64d is fixed at the end D, and the release lever 62 is fixed in a state where it is pulled up. Is done.

  For this reason, according to the cart brake device of the bleacher seat 5 configured as described above, the contact between the brake rod 30 and the wheel 16 can be released by the operation of pulling the handle 62b upward, and the operability is good. Further, since the release lever 62 is simply constituted by the plate-like slide portion 62a and the rod-like handle 62b, the cost of parts can be suppressed. And the effect similar to the cart brake device of the bleacher seat 1 can be acquired irrespective of the presence or absence of the skirt board 24. FIG.

It should be noted that the bleacher seat 5 can be expanded and stored in the same manner as the bleacher seat 1 by moving the release lever 62 up and down instead of the skirt plate 24 of the bleacher seat 1.
As mentioned above, although embodiment of this invention was described, it cannot be overemphasized that this invention can take a various form.

  For example, in the above-described embodiment, the seat is configured by combining two elongated plates, but the seat may have any shape, for example, a plurality of foldable chairs are arranged side by side and on the floor. By doing so, the seat may be configured. Further, the floor itself may be used as a seat.

It is a side view in the use condition of the bleacher seat 1 of 1st Example. It is a side view which shows the structure of the truck braking device of 1st Example. It is a disassembled perspective view which shows the structure of the truck braking device of 1st Example. It is an enlarged view which shows the detail of the truck braking device of 1st Example. It is a side view which shows the structure of the truck braking device of 2nd Example. It is a disassembled perspective view which shows the structure of the truck braking device of 2nd Example. It is an enlarged view which shows the detail of the truck braking device of 2nd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,5 ... Legal seat, 10 ... Seat, 10a ... Seat plate, 10b ... Curtain board, 10c ... Supporting member, 12 ... Floor base, 12a ... Bottom floor base, 12b ... Top floor base, 14 ... Cart , 14a ... bottom carriage, 14b ... top carriage, 14c ... insertion hole, 16 ... wheel, 18 ... first lock plate, 20 ... second lock plate, 22 ... seat, 24 ... skirt plate, 24a ... bolt Insertion hole, 30 ... brake rod,
32 ... support plate, 32a, 32b ... insertion hole, 38 ... slide block, 38a ... insertion hole, 38b ... screw hole, 40 ... interlocking link, 40a ... long hole, 40b, 40c ... bolt insertion hole, 42 ... skirt plate connection Plate, 42a, 42b ... Bolt insertion hole, 44a, 44b, 44c ... Bolt, 46 ... Hinge, 48 ... Connection rod, 48a ... Bolt insertion hole, 50 ... Hook, 52 ... Lock plate connection plate, 52a ... Insertion hole, 54 ... adjustment link, 54a ... insertion hole, 54b ... screw hole, 58 ... support plate, 58a, 58b ... insertion hole, 58c ... screw hole, 60 ... slide guide, 60a ... long hole, 60b ... bolt insertion hole, 60b ... screw Hole, 60c ... Bolt insertion hole, 62 ... Release lever, 62a ... Slide part, 62b ... Handle, 62c ... Long hole, 62d ... Bolt insertion hole, 64a, 64b, 64c, 6 d ... Bolt, C, D ... end

Claims (6)

It consists of multi-level floors with different heights with seats, and when stored, the other floors are stored in order under the uppermost floor, and when used, the lowermost floor is By pulling out, in the telescopic seating that forms the staircase, each floor is deployed in order, braking the carriage that supports the bottom floor so that each floor does not move A truck braking device for carrying out
Of the plurality of wheels pivotally supported by the carriage that supports the lowermost floor platform, the rotation of the wheels is stopped by coming into contact with the outer peripheral surface of the wheel arranged on the side from which the floor platform is pulled out. A braking body,
A support portion fixed to the carriage and supporting the brake body so as to be displaceable between a position where it comes into contact with the outer peripheral surface of the wheel and a position where it does not come into contact;
An urging member that urges the braking body in a direction to contact the outer peripheral surface of the wheel, and urges the braking body to the wheel;
An operating mechanism that is manually operated from the outside, engages with the brake body during operation, and displaces the brake body against the biasing force of the biasing member;
Equipped with a,
A part of the braking body is bent in a hook shape so that both end faces face in the same direction, one end side is inserted through an insertion hole formed in the support portion, and the other end contacts the outer peripheral surface of the wheel. It is composed of a rod-shaped member that comes into contact with and stops the wheel,
The biasing member is inserted through the rod-shaped member, and one end of the rod-shaped member is engaged with the support portion and the other end is engaged with a spring engaging portion provided on the rod-shaped member, whereby one end of the rod-shaped member is A coil spring that urges the braking body in a direction in contact with the outer peripheral surface of the wheel;
The support portion is fixed at a position not exceeding the end surface of the carriage on the side from which the floor base is pulled out, and the one end of the rod-shaped member is in contact with the wheel from the side from which the floor base is pulled out. A cart braking device characterized by supporting a braking part . A first protrusion is provided on the braking body,
The operating mechanism is:
A first elongated hole that is elongated in the displacement direction of the braking body, and a link member that is slidably inserted into the first elongated hole;
The first protrusion is brought into contact with one end of the first elongated hole by being connected to the link member and displacing the link member in a direction against the urging force of the coil spring by an external operation. A lever that displaces the braking body against the biasing force of the coil spring;
The cart braking device according to claim 1 , comprising: The spring engaging portion is
An insertion hole through which a rod-shaped member constituting the braking body is inserted;
A screw hole perpendicular to the insertion hole and penetrating through the insertion hole;
A fixing screw that is screwed into the screw hole and positions and fixes the spring engaging portion with respect to the rod-shaped member;
With
The bogie braking device according to claim 2 , wherein the first protrusion is configured by the fixing screw. The carriage that supports the lowermost floor pedestal is engaged with a second protrusion provided on the carriage that supports the second-stage floor pedestal when the bleacher seat is configured, An engaging portion is provided to fix the bottom floor to the floor,
The engaging portion is connected to the link member, and when the link member is displaced in a direction against the urging force of the coil spring, the engaging portion is displaced in a direction to release the engagement with the second protrusion. The cart braking device according to claim 2 or 3 , characterized by the above-mentioned. In the lowermost floor pedestal, below the end surface on the side from which the floor pedestal is pulled out, a pivot is provided so as to be swingable between a position hanging below the floor pedestal and a position inverted upward. Skirt board is provided,
The cart brake device according to any one of claims 2 to 4 , wherein the skirt plate is connected to the link member and functions as the lever. A third protrusion is formed on the support portion,
The lever is
A slide member in which the second elongated hole is formed in a plate shape, is slidably connected to the link member, and the third projecting portion is slidably inserted into the second elongated hole;
A handle coupled to the slide member and configured to swing the slide member by an external operation;
The truck braking device according to any one of claims 2 to 4 , wherein