TWI380789B - Retractable viewing table - Google Patents

Description

Retractable viewing table

The present invention relates to a storage type viewing seat including a plurality of stages that can be moved between a stepped deployment position and a storage position that overlaps vertically, and a seat provided on the plurality of seats.

As shown in FIG. 14, the storage type viewing booth includes a plurality of seats 2 that support a plurality of seats (one seat is shown in each step) 1 horizontally and horizontally, and the seats are supported. The stage 2 is moved between the unfolded state in which the steps are shifted in a stepwise manner in use as shown in FIG. 14(a) and the superimposed state in which the storage is arranged up and down as shown in FIG. 14(b), and the respective states are lowered in the overlapping state. In the seat 1 on the seat 2, the upper and lower intervals of the seat 2 are shortened, whereby the storage type viewing seats are collectively compactly gathered and housed in a storage position such as a wall edge, and in the unfolded state. The seat 1 on each of the seats 2 is erected to form a stepped viewing seat.

Next, as described above, in order to move the seat between the lowered state and the erected state, the storage type viewing seat is provided with a seat moving device which is represented by a motor as shown in FIG. 15(a) Rotating mechanism 6 constituted by a speed reducer that decelerates the output of the motor to rotate the strut 5 to make the seat surface 3 and the backrest 4 in a state where the seat surface 3 of the seat 1 and the backrest 4 are overlapped It is erected so that the seat 1 becomes a use state in which the seat surface 3 is placed forward and can be seated, and as shown in FIG. 15(b), the rotation mechanism 6 is used to rotate the support 5 so that the seat is made When the seat surface 3 of the 1 is overlapped with the backrest 4, the seat surface 3 and the backrest 4 are laid down, thereby seating As shown in FIG. 15(c), the seat 1 can accommodate the seat 1 between the steps of the seat 2 (see, for example, Japanese Laid-Open Patent Publication No. Hei 7-255555).

However, the seat of the storage type viewing seat has a seat surface and a backrest, and the backrest may move between the use position and the storage position by the backrest drive mechanism, wherein the seat surface protrudes forward from the front end portion of each seat. The backrest is disposed at a rear position of the seat surface and is disposed at a front end portion of the seat, and is receivable between a standing position that is erected and a storage position that is tilted backward.

However, in the case of the above configuration, if the backrest drive mechanism moves only the backrest, in the case where a large force acts on the backrest, such as when seated, there is a possibility that the back drive mechanism is driven back by the force. The problem of accidentally falling down the backrest.

Moreover, when a backrest locking mechanism such as an electric back is provided separately from the backrest driving mechanism in order to solve such a problem, there arises a new problem that the configuration around the backrest becomes complicated, and the portion of the backrest locking mechanism Increased costs.

An object of the present invention is to effectively solve the above problems, and the storage type viewing stand of the present invention includes a multi-stage seat that can be moved between a stepped deployment position and a storage position that overlaps vertically; the seat has a seat surface. And a backrest that is provided at a front end portion of the seat and protrudes forward from the front end portion, the backrest being located at a rear position of the seat surface and provided at a front end portion of the seat, and being erectable Position and storage that is placed backwards And the backrest driving mechanism moves the backrest between the use position and the storage position, wherein the storage type viewing seat is characterized in that: the backrest driving mechanism is a link mechanism, and includes: a link having one end connected to a lower end portion of the backrest, rotating the backrest between the use position and the storage position, and moving the backrest to the engaging portion by movement toward the use position Engaged to lock the backrest to the use position; the second link has an end connected to the other end of the first link, and the base is supported by the support shaft; and an actuator to cause the above The second link rotates.

[Effects of the Invention]

In the storage type viewing booth, when the multi-stage pedestal moves to the stepped deployment position, the backrest driving mechanism moves the backrest from the storage position that is tilted backward toward the erected use position. The second link that is connected to the other end of the first link and whose base is supported by the support shaft rotates, and the first link that is connected to the lower end portion of the backrest at one end causes the backrest to face from the storage position. The position is moved, and the backrest is engaged with the engaging portion by the movement toward the use position, thereby locking the backrest to the use position.

Further, when the plurality of stages are moved to the storage position where the upper and lower sides are overlapped, the backrest driving mechanism moves the backrest from the erected use position toward the storage position that is tilted backward, and at this time, the actuator connects the ends. The second link that is supported by the support shaft at the other end of the first link is rotated in the opposite direction to the above-described manner, whereby the first link that is connected to the lower end portion of the backrest at one end serves the backrest from the use position. Move toward the storage position and make the backrest By the movement toward the storage position, the self-fastening portion is first disengaged, thereby unlocking the backrest.

Therefore, according to the storage type viewing booth of the present invention, the backrest of the seat can be automatically moved between the storage position and the use position corresponding to the movement of the multi-stage seat, and the multi-stage seat is moved to The stepped position is such that the backrest of the seat is in the use position, and the backrest is locked in the use position. Therefore, even when a large force such as a seat is applied to the backrest, the backrest can be prevented. Accidentally laid down.

Further, according to the storage type viewing booth of the present invention, since it is not necessary to separately provide the backrest locking mechanism, the structure around the backrest can be simplified, and the cost of the portion of the backrest locking mechanism can be reduced.

Furthermore, in the storage type viewing stand of the present invention, it is preferable that the engaging portion of the backrest driving mechanism is the support shaft. Thus, it is not necessary to separately provide the engaging portion, so that the structure around the backrest can be further simplified.

Further, in the storage type viewing booth of the present invention, it is preferable that the second or second stage of the plurality of stages in the plurality of stages is suspended by the rear plate material. The storage type viewing stand includes a seat lock member, and a rear end portion of the seat provided in front of the plate member is engaged with a front end portion of the seat on the upper side of the deployment position, a locking position that fixedly supports the front end portion and a release position that releases the front end portion; and a seat locking member driving mechanism that causes the seat locking member to be in the locked position and the release position Move between. If the seat surface is set to protrude from the front end portion of the seat in this way, and the seat in front of the board The rear end portion is provided with the seat locking member and the driving mechanism thereof, and the seat locking member and the portion of the driving mechanism thereof do not extend the seat forward, thereby ensuring the passage space in front of the seat on the seat Spacious.

Further, in the storage type viewing booth of the present invention, it is preferable that the seat lock member drive mechanism is a screw mechanism that uses a motor to extend a screw shaft that is disposed to extend in a vertical direction or to be screwed to The nut on the screw shaft rotates to move the screw shaft and the nut relative to each other, so that the seat locking member automatically moves up and down between the locked position and the release position. When such a screw mechanism is used, the seat lock member can be automatically moved up and down with a simple configuration.

Further, in the storage type viewing booth of the present invention, preferably, the seat lock member driving mechanism is a toggle mechanism that is driven by a foot moving member or a manual member to lock the seat. The member moves up and down between the locked position and the release position. When such a toggle mechanism is used, the seat lock member can be moved up and down with a simpler configuration.

Hereinafter, embodiments of the present invention will be described in detail based on embodiments with reference to the drawings. Here, FIG. 1 is a view showing the storage type viewing booth of the present invention viewed from the side of the seat when the seat is placed at the deployment position and the storage position and the backrest of the seat is placed at the use position and the storage position. A cross-sectional view of an embodiment, FIG. 2 is a view showing the present embodiment in a state where the backrest is placed at the use position and the seat surface is placed at the use position and the storage position. FIG. 3 is a plan view showing a backrest driving mechanism of the storage type viewing booth of the above-described embodiment, and FIG. 4 is a plan view showing the storage of the above-described embodiment from the side of the seat. FIG. 5 is a cross-sectional view showing the seat lock member and the seat lock member drive mechanism of the present view, and FIG. 5 is a view showing the seat lock member and the seat lock of the storage type view seat of the above-described embodiment viewed from the front of the seat. A cross-sectional view of the component drive mechanism, in which the same portions as the previous examples are denoted by the same reference numerals. In addition, in FIGS. 1 and 4, the left side shows the front of the seat and the seat, and the right side shows the rear of the seat and the seat.

That is, in the figure, reference numeral 1 denotes a seat, 2 denotes a seat of the storage type viewing stand, 3 denotes a seat surface of the seat 1, 4 denotes a backrest of the seat 1, and 7 denotes a plate member, and the storage type of the embodiment The viewing stand includes a support structure that is coupled to the plate member 7 disposed behind the rear end portion of the seat 2 by the cross member 8 provided on the lower surface of each of the seats 2, and Each of the mounts 2 is supported in a cantilever state via a sheet material 7 in a well-known manner by a bracket member (not shown) fixed to the rear surface (the rightward side in FIG. 1) of the sheet material 7, the support structure being at the lower end The part has a running roller that can travel forward and backward. Further, in the storage type viewing booth of the present embodiment, the frame 9 having a U-shaped cross section is fixed to the front end portion of each of the seats 2 so that the opening portion faces downward, and the backrest 4 of each seat 1 is fixed. The lower end portion is supported by the frame 9 via the support shaft 4a such that the backrest 4 is between the erected use position shown on the left side and the center in FIG. 1 and the accommodating position on the right side of the rear side shown in FIG. flexible. Further, in addition to the uppermost stage, the above brackets supporting the rear side of the plate 7 of each of the seats 2 A support roller (not shown) is provided at an upper end portion of the member, and the seat 2 located above the upper end portion is supported so as to be movable back and forth.

Moreover, as shown in FIG. 2, the seat 1 is arrange|positioned in the horizontal direction horizontally, and the couple seat is comprised, and each seat 1 is the both sides of the seat surface 3, and the partition plate is mutually [ 10, the lower end portion of the partitioning plate 10 is fixedly disposed on the frame 9 not shown in FIG. 2, and the upper end portion of the partitioning plate 10 is provided with the elbow portion 11. Further, the rear portion of the seat surface 3 is supported by the left and right partitioning plates 10 via the support shaft 3a, so that the seat surface 3 is shown in the center and the right side of the storage position shown in the left side of FIG. The use positions that are substantially horizontally lowered are retractable, and the spring is always pressed to the storage position by a spring (not shown).

A backrest drive mechanism 12 is provided in the frame 9, and for the backrest drive mechanism 12, a cross section of a different position is shown on the left side and the center of FIG. 1, and as shown in the plan view of FIG. 3, includes: as an actuator a motor 13 with a speed reducer; a drive shaft 14 rotatably supported on the frame 9 and extending in the left-right direction of the seat 2; a first gear set 17 having a drive gear 15 fixedly disposed on an output shaft of the motor 13 And a driven gear 16 fixedly disposed on the drive shaft 14 and meshing with the drive gear 15; a gear support shaft 18 rotatably supported on the frame 9 at a position of each seat 1; a second gear set 21, a drive gear 19 fixedly disposed on the propeller shaft 14 at a position of each seat 1 and a driven gear 20 fixedly disposed on the gear support shaft 18 and meshed with the drive gear 19; and as the first link Two connecting rods 22 whose upper end portion is coupled to the lower end portion of the backrest 4, a position deviating from the support shaft 4a; the lower end portions of the two links 22 are connected to both end portions of the coupling shaft 23, and the coupling shaft 23 is offset from a center portion of the driven gear 20 fixed to the gear support shaft 18 as a base The driven gear 20 is a driven gear that is a second link of the second gear set 21, and penetrates the peripheral portion as an end portion.

According to the above configuration, the backrest drive mechanism 12 rotates the propeller shaft 14 via the first gear unit 17 by the motor 13, and transmits the rotation to the gear support shaft 18 corresponding to each seat 1 via the second gear set 21, The two links 22 are pushed and pulled by the connecting shaft 23 of the driven gear 20 provided in the second gear set 21, and the backrest 4 is rotated toward the erected use position by pulling the link 22, and the other On the other hand, by pushing the link 22, the backrest 4 is rotated toward the storage position where the rear side is lowered. Further, as shown in FIG. 3, a cam shaft 24 is coupled to any of the gear support shafts 18. Two cams 25 are disposed in the cam shaft 24, and the cams 25 respectively cause two micro switches (in other rotational positions). The micro switch 26 is actuated, whereby the operation of the motor 13 is stopped when the backrest 4 is in the use position and the storage position.

Here, the lower portion of the link 22 is bent in a substantially L shape, whereby as shown in the center of FIG. 1, when the backrest 4 is in the above-described use position, the bent lower portion of the link 22 will be the gear as the engaging portion. The support shaft 18 is engaged so that even if the pulling force acts on the link 22 from the backrest 4, the pull-up can be prevented and the backrest 4 can be locked in the use position. Therefore, even if a large force acts on the backrest 4 when seated, the backrest 4 can be prevented from accidentally falling down.

Further, in the storage type viewing booth of the present embodiment, as shown in FIGS. 4 and 5 As shown in the rear end portion of the seat 2 in the vicinity of the both ends in the left-right direction of the seat 2, the rectangular column-shaped seat lock member 27 is positioned higher than the cross member 8 The axis is disposed to extend in the vertical direction, wherein the table locking member 27 is provided with a frustoconical upper end portion 27a and is U-shaped as viewed from above, and is driven by the seat locking member at the rear end portion of the seat 2 The mechanism 28 is supported by the plate member 7 and the beam 8 for which the cross-sections of the different positions are shown at the left and center of FIG. 4, and as shown in the front view of FIG. a motor 29 with a speed reducer; a drive shaft 30 rotatably supported on the plate 7 and the cross member 8 and extending in the left-right direction of the seat 2; two worms 31, one of which is inserted into the output shaft of the motor 29 Between the one end of the drive shaft 30 and the other end coupled to the other end of the drive shaft 30 (not shown); a ball screw shaft 32 that is axially aligned with the seat lock member 27 Directional extension and rotatably supported The plate 7 and the beam 8 protrude above the beam 8; a worm wheel 33 is fixedly disposed at a lower end portion of the ball screw shaft 32 and meshes with the worm 31; a ball nut 34 is fixedly disposed on The lower end portion of the table locking member 27 is screwed onto the ball screw shaft 32; and two links 35 for screwing the ball nut 34 to screw the seat locking member 27.

According to the above configuration, the seat lock member drive mechanism 28 rotates the worm shaft 31 shown in FIG. 5 by the motor 29, and rotates another worm 31 (not shown) via the transmission shaft 30, and the worms 31 are respectively separated by the worm shaft 31. Rotating the worm wheel 33 and the ball screw shaft 32 to raise and lower the ball nut 34 By moving, the two table lock members 27 in the vicinity of the both end portions in the left-right direction of the seat 2 are simultaneously moved up and down, and as shown in the center of FIG. 4 and FIG. 5, the seats are raised at the raised positions. The upper end portion 27a of the lock member 27 is engaged with a receiving hole 36a of the bracket 36 fixedly disposed in the frame 9 and facing the seat locking member 27, and the frame 9 is provided on a seat provided with the seat locking member 27. In the front end portion of the seat 2 on the second side, the front end portion of the seat 2 of the seat 2 is fixedly supported by the seat lock member 27, and the lower end position is shown in the right side of FIG. The upper end portion 27a of each of the table lock members 27 is detached from the receiving hole 36a of the bracket 36 in the frame 9, whereby the front end portion of the seat 2 on the seat 2 is released from the seat locking member 27, The frame 9 is provided at a front end portion of the seat 2 on the seat 2 on which the seat locking member 27 is provided.

Further, as shown in Fig. 5, a cam 37 is provided on the side of one of the table locking members 27, and the cam 37 is actuated at the seat locking member 27 by causing the two microswitches 38 to be respectively operated at different positions. When the raised position and the lowered position are located, the motor 29 is stopped. Further, the two link members 35 are coupled to one end portion, and the other end portions are coupled to the seat lock member 27 and the cross member 8, respectively, to prevent the ball nut 34 and thus the seat lock member 27 from rotating with the rotation of the ball screw shaft 32. .

In the storage type viewing booth of the present embodiment having such a configuration, as shown in FIG. 6(a), when the plurality of stages 2 are moved to the stepped deployment position, the backrest driving mechanism 12 causes the backrest 4 to self-retain The storage position that is tilted rearward is automatically moved to the erected use position. At this time, the motor 13 is connected to the lower end portion of the link 22 and the center portion is driven by the gear support shaft 18 The movable gear 20 rotates, whereby the link 22 whose upper end is coupled to the lower end portion of the backrest 4 swings the backrest 4 from the stowed position to the use position, and causes the backrest 4 to move with the gear support shaft 18 by the movement toward the use position. The buckle is engaged to lock the backrest 4 in the use position.

Further, as shown in FIG. 6(b), when the plurality of stages 2 are moved to the storage position where the upper and lower sides are overlapped, the backrest driving mechanism 12 automatically moves the backrest 4 from the erected use position to the rearwardly placed storage. At this time, the motor 13 causes the driven portion 20 whose peripheral portion is coupled to the lower end portion of the link 22 and whose center portion is supported by the gear support shaft 18 to rotate in the opposite manner to the above-described manner, whereby the upper end portion is coupled to the backrest 4 The link 22 at the lower end swings the backrest 4 from the use position to the storage position, and first separates the backrest 4 from the engaged state of the gear support shaft 18 by the movement toward the storage position, thereby locking the backrest 4 Lifted.

Therefore, according to the storage type viewing booth of the present embodiment, when the plurality of stages 2 are moved to the stepped deployment position and the backrest 4 of the seat 1 is in the use position, the backrest 4 is locked in the use position. Therefore, even when a large force acts on the backrest 4, such as when seated, the backrest 4 can be prevented from being accidentally dropped.

Further, according to the storage type viewing booth of the present embodiment, since it is not necessary to separately provide the backrest locking mechanism, the structure around the backrest 4 can be simplified, and the cost of the portion of the backrest locking mechanism can be reduced.

Further, according to the storage type viewing booth of the present embodiment, since the engaging portion of the backrest driving mechanism is the gear supporting shaft 18, it is not necessary to separately provide the engaging portion, and therefore, the structure around the backrest can be further simplified.

Further, in the storage type viewing booth of the present embodiment, as shown in FIG. 6(a), when the plurality of stages 2 are moved to the stepped development position, the rear end portion of the table 2 before the sheet material 7 is placed. The seat lock member 27 is automatically moved up to the lock position by the seat lock member drive mechanism 28, and is engaged with the bracket 36 at the front end portion of the seat 2 to lower the front end portion. The first-stage support roller is slightly lifted and fixedly supported, thereby preventing lateral swaying or swaying of each of the pedestals 2 in the deployed position, and, as shown in FIG. 6(b), when the multi-stage pedestal 2 is When moving to the storage position where the upper and lower sides are overlapped, the seat lock member 27 is automatically moved down to the release position by the seat lock member drive mechanism 28, and the front end portion of the seat 2 on the seat 2 is released and lowered to the next stage. On the support roller.

Further, as shown in the viewing table, when the table 2 of the second or second order from the bottom to the top is supported by the rear plate member 7 in a cantilever state, the seat 2 at the deployed position is provided. It is easy to shake up and down due to sitting or leaving the seat 1. Therefore, in many cases, the seat locking member and the driving mechanism thereof are provided. In order to improve stability, the components or mechanisms are often placed before the plate, but In the conventional storage type viewing stand shown in FIG. 15, since the seat is disposed adjacent to the board before the seat, if the seat lock member and the drive mechanism thereof are disposed before the board, the seat protrudes forward. The problem that the passage space in front of the seat on the seat is narrowed, and according to the storage type view of the present embodiment, the seat surface 3 is provided to protrude from the front end portion of the seat 2, and is in front of the sheet 7. The seat locking member 27 and the seat locking member driving mechanism 28 are provided at the rear end portion of the seat 2, so that the space of the seat locking member 27 and the seat locking member driving mechanism 28 is made Since the seat 1 does not protrude forward, it is possible to ensure that the passage space in front of the seat 1 on the seat 2 is spacious.

Next, according to the storage type viewing booth of the present embodiment, the seat lock member driving mechanism 28 is a screw mechanism that rotates the screw shaft 32 that is disposed to extend in the vertical direction by the motor 29, whereby the screw shaft 32 is rotated. The relative movement of the nut 34 causes the seat lock member 27 to automatically move up and down between the lock position and the release position. Therefore, the seat lock member 27 can be automatically moved up and down with a simple configuration.

Fig. 7 is a front elevational view showing a modification of the storage type viewing stand of the embodiment in which the bracket 36 and the seat lock member 27 are different. In this modification, the bracket 36 does not have the receiving hole 36a, but instead A rubber-like overhanging block 36b having an elastic structure which is triangular in shape viewed from the front is fixed to both sides of the seat 1, and the seat locking member 27 has a bracket 36 and the bracket 36 at its upper end portion. The shape of the overhanging blocks 36b on both sides corresponds to the substantially U-shaped engaging portion 27b which is opened upward as it is upward. This modification is different from the above embodiment only in this respect, and other aspects are the same as those of the above embodiment.

According to the storage type viewing stand of the above-described modification, not only the same operational effects as those of the above-described embodiment are obtained, but also the expansion pad 36b is provided with a vibration suppression effect, so that even if lateral sway occurs in the seat 2, Store this shake early.

8 is a view showing a modification in which the seat lock member drive mechanism 28 is different in the storage type viewing stand of the above-described embodiment from the side of the seat 2 in a state where the seat lock member 27 is placed at the lock position. Section view 9 is a perspective view showing the seat lock member drive mechanism 28 in the modified example viewed from the front of the seat 2 in a state where the seat lock member 27 is at the lock position, and FIG. 10 is a view showing the seat lock member. 27 is a cross-sectional view of the seat lock member drive mechanism 28 in the above-described modification from the side of the seat 2 in a state where the release position is located, and FIG. 11 is a view showing the self-mounting table in a state where it is installed in the seat 2. A cross-sectional view of the seat lock member drive mechanism 28 in the above modification is observed from the side of 2.

The storage type viewing stand of this modification is configured such that the seat lock member drive mechanism 28 lifts and lowers the seat lock member 27 by the foot moving member, and the same portions as those of the above-described embodiment and modification are shown in the drawing. Use the same symbol to indicate. Here, as shown in FIG. 8, the seat lock member drive mechanism 28 includes a support 40 that is erected on the bottom plate 39 and has a U-shape as viewed from above, and the support 40 is formed to extend in the vertical direction on both side walls. The hole 40a has an opening 40b formed in a lower half of the central wall connecting the side walls, and a locking member bracket 41 having a circular hole 41a fixed thereto at an upper end portion of the pillar 40, where the seat locking member is fixed A circular tubular support portion 27c of 27 is slidably inserted into the circular hole 41a. Further, this modification is the same as the above-described modification, and the bracket 36 does not have the receiving hole 36a. Instead, a rubber-made overhanging pad which is elastic from the front and which is triangular in shape is fixed to both sides of the seat 1 in the lateral direction. In the block 36b, the seat lock member 27 also includes a substantially U-shaped engaging portion 27b and an elastic pad 27d. The engaging portion 27b is fixed to the upper end portion of the support portion 27c, and is coupled to the bracket 36 and the bracket 36. The shape of the lateral overhanging block 36b is correspondingly opened and opened upward, and the elastic pad 27d is disposed on the engaging portion 27b.

Further, the seat lock member drive mechanism 28 in the modified example includes a pedal bracket 42 that is erected on the bottom plate 39 and has a U-shape as viewed from above, and a pedal 43 that serves as a foot moving member. The pedal bracket 42 is disposed in the opening 40b of the stay 40 so as to open in the opposite direction to the stay 40, and supports the center portion of the pedal 43 so as to be swingable via the support shaft 44. Further, the pedal 43 is provided with a long hole 43b at the distal end portion 43a.

Further, the seat lock member drive mechanism 28 in this modification has the lower link 45 and the upper link 46 which constitute two pieces of the toggle mechanism, and the upper end portion and the upper link 46 of the lower link 45. The lower end portion is coupled to each other via a pin 47 that penetrates the long hole 43b of the distal end portion 43a of the pedal 43. The lower end portion of the lower link 45 is swingably supported by the lower end portion of the stay 40 via the pin 48. The upper end portion of the upper link 46 is coupled to the seat lock member 27 via a pin 49 that penetrates the long hole 40a of both side walls of the stay 40 and penetrates the lower end portion of the support portion 27c of the seat lock member 27. Moreover, the two upper links 46 are integrally coupled to each other via the bracket 50. Further, the two lower links 45 are also integrated with each other via the pins 51, so that the tension between the two pins 48, 49 is extended. Spring) 52 and pass.

In the seat lock member drive mechanism 28, when the base end portion (the left end portion in FIG. 8) of the pedal 43 is depressed by a person's foot to lower the base end portion, the long hole 43b of the front end portion 43a of the step 43 is penetrated. The pin 47 is lifted upward, and the lower link 45 is swung upward, whereby the upper link 46 is lifted up by the pin 47, and is coupled thereto via the pin 49 guided by the long hole 40a of the stay 40. The seat lock member 27 of the link 46 rises against the tensile force of the tension spring 52 and reaches the lock position shown in Figs. 8 and 9 . Seat While the table lock member 27 reaches the lock position, the pin 47 passes over a dead point on the straight line connecting the pins 48, 49, and moves to the left side in Figs. 8 and 9, therefore, the lock position, the lower link 45 and the upper link 46 abut against the pedal bracket 42 by the tension of the tension spring 52 to maintain stability. Then, at the locked position, the three pins of the lower link 45 and the upper link 46 are arranged substantially linearly in the vertical direction. Therefore, the pressing force applied from the bracket 36 of the upper table 2 to the seat locking member 27 is performed. Most of it will be supported by the bottom plate 39 via the pins 48 and the struts 40.

Further, in the seat lock member driving mechanism 28, when the human foot or the like is separated and the base end portion (the left end portion in FIG. 8) of the pedal 43 is lifted upward, the long hole of the distal end portion 43a of the pedal 43 is penetrated. The pin 47 of the 43b is pressed obliquely downward, and the pin 47 passes over the dead point on the straight line connecting the pins 48 and 49 from the steady state, and moves to the right in the figure to swing the lower link 45 upward. The pin 47 interacts with the tensile force of the tension spring 52 to press the upper link 46, so that the seat lock member 27 coupled to the upper link 46 via the pin 49 descends to reach the release position shown in FIG.

According to the storage type viewing stand of the above-described modification, when the plurality of stages 2 are moved to the stepped development position, the rear end portion of the seat 2 in front of the sheet material 7 is shown in the left side of FIG. The seat lock member 27 is driven by the seat lock member drive mechanism 28 to be moved up to the lock position, thereby being engaged with the bracket 36 of the front end portion of the seat 2, and fixedly supporting the front end portion. Thereby, the respective pedestals 2 at the unfolding position are prevented from being laterally swayed or swayed forward and backward, and when the multi-stage pedestal 2 is moved to the storage position where the upper and lower sides are overlapped, the pedestal locking member 27 is as shown on the right side of FIG. The front end portion of the seat 2 on the table 2 can be released by being driven by the table lock member driving mechanism 28 to be lowered to the release position.

Further, according to the storage type viewing booth of the modification, the seat lock member driving mechanism 28 is a toggle mechanism that moves the seat lock member 27 between the lock position and the release position by the pedal 43 driving. Therefore, the seat lock member 27 can be moved up and down with a simpler configuration.

FIG. 12 is a view showing another modification in which the seat lock member driving mechanism 28 is different in the storage type viewing booth of the above-described embodiment in the state in which the seat lock member 27 is placed at the lock position. In addition, FIG. 13 is a cross-sectional view showing the seat lock member drive mechanism 28 in the other modified example viewed from the front of the seat 2 in a state where the seat lock member 27 is placed at the release position.

The storage type viewing stand of this modification is configured such that the seat lock member drive mechanism 28 lifts and lowers the seat lock member 27 by a manual member, and the above embodiment and the modifications are shown in FIGS. 12 and 13 The same parts are denoted by the same symbols. Here, the seat lock member drive mechanism 28 moves the seat lock member 27 up and down by the toggle mechanism in the same manner as the above-described modification, but the toggle mechanism is driven by a lever, so that, as shown in FIG. 12 and FIG. 13 is different from the above-described modification in that it has a lever 53 which is formed integrally with the lower link 45 and extends from one end portion of the lower link 45 toward the side of the support 40, and is fixed. The lock member bracket 41 provided at the upper end portion of the stay 40 and having the circular hole 41a is formed by bending the plate material into a U shape, and in other respects It is the same as the above modification.

According to the storage type viewing stand of the modification mentioned just now, the same effect as the modification mentioned earlier can also be acquired.

Although the above description has been made based on the illustrated example, the present invention is not limited to the above examples. For example, the seat lock member 27 may be hooked, and the seat lock member drive mechanism 28 may cause the seat lock member. 27 is rotated to fasten and fasten the front end portion of the seat 2 on it. Further, the engaging portion that the second link of the backrest driving mechanism is engaged with may be provided separately from the gear supporting shaft 18, and the second link may be driven by the shaft instead of the driven gear 20. In the ordinary arm link, the actuator that rotates the second link may not be the motor 13 but a hydraulic cylinder or the like. Further, the seat lock member drive mechanism 28 can move the seat lock member using mechanisms other than the above-described embodiments and modifications.

[Industrial availability]

According to the storage type viewing booth of the present invention, the backrest of the seat can be automatically moved between the storage position and the use position corresponding to the movement of the multi-stage seat, and the multi-stage seat is moved to the stepped shape. When the position of the seat is in the use position, the backrest is locked in the use position, and therefore, even when a large force such as a seat is applied to the backrest, the backrest can be prevented from being accidentally placed. inverted. Moreover, since it is not necessary to additionally provide a backrest locking mechanism, the configuration around the backrest can be simplified, and the cost of the portion of the backrest locking mechanism can be reduced.

1‧‧‧ seats

2‧‧‧seat

3‧‧‧Seat

3a, 4a‧‧‧ support shaft

4‧‧‧ Backrest

5‧‧‧ pillar

6‧‧‧Rotating mechanism

7‧‧‧ plates

8‧‧‧ beams

9‧‧‧Frame

10‧‧‧ partition board

11‧‧‧ elbow

12‧‧‧Backrest drive mechanism

13‧‧‧Motor

14‧‧‧Drive shaft

15‧‧‧ drive gear

16‧‧‧Driven gears

17‧‧‧1st gear set

18‧‧‧ Gear support shaft

19‧‧‧ drive gear

20‧‧‧Driven gears

21‧‧‧2nd gear set

22‧‧‧ Connecting rod

23‧‧‧Connected shaft

24‧‧‧ camshaft

25‧‧‧ cam

26‧‧‧Micro Switch

27‧‧‧Rectangular column mount locking parts

27a‧‧‧Frustrated conical upper end

27b‧‧‧Deduction Department

27c‧‧‧ Round tubular support

28‧‧‧Seat lock component drive mechanism

29‧‧‧ Motor with reducer

30‧‧‧Drive shaft

31‧‧‧ worm

32‧‧‧Rolling screw shaft

33‧‧‧ worm gear

34‧‧‧Spherical nut

35‧‧‧ Connecting rod

36‧‧‧ bracket

36a‧‧‧With hole

36b‧‧‧Extension blocks

37‧‧‧ cam

38‧‧‧Micro Switch

39‧‧‧floor

40‧‧‧ pillar

40a‧‧‧ long hole

40b‧‧‧ openings

41‧‧‧Lock component bracket

41a‧‧‧ round hole

42‧‧‧ pedal bracket

43‧‧‧ pedal

43a‧‧‧ front end

43b‧‧‧ long hole

44‧‧‧Support shaft

45‧‧‧lower connecting rod

46‧‧‧Upper link

47, 48, 49, 51‧ ‧ sales

50‧‧‧ bracket

52‧‧‧ stretching spring

53‧‧‧Leverage

Figure 1 is a view showing that the seat is in the deployed position and the storage position and When the backrest of the seat is placed in the use position and the storage position, a cross-sectional view of an embodiment of the storage type viewing booth of the present invention is viewed from the side of the seat.

Fig. 2 is a front elevational view showing the seat of the storage type viewing booth of the above embodiment in a state where the backrest is placed at the use position and the seat surface is placed at the use position and the storage position.

Fig. 3 is a plan view showing a backrest driving mechanism of the storage type viewing booth of the above embodiment.

4 is a cross-sectional view showing the seat lock member and the seat lock member drive mechanism of the storage type viewing stand of the above-described embodiment viewed from the side of the seat.

Fig. 5 is a cross-sectional view showing the seat lock member and the seat lock member drive mechanism of the storage type viewing booth of the above embodiment viewed from the front of the seat.

Fig. 6 (a) is a side view showing the storage type viewing booth of the above-described embodiment in an unfolded state of the seat, and Fig. 6 (b) is a side view showing the storage type viewing seat in a state in which the seat is stored.

Fig. 7 is a front elevational view showing a modification in which the bracket and the seat locking member are different in the storage type viewing booth of the above embodiment.

8 is a cross-sectional view showing a modification in which the seat lock member driving mechanism is different in the storage type viewing stand of the above-described embodiment in a state in which the seat lock member is placed at the lock position.

Fig. 9 is a view showing the seat lock member drive in the modified example viewed from the front of the seat in a state where the seat lock member is placed at the lock position. Perspective of the institution.

FIG. 10 is a cross-sectional view showing the seat lock member drive mechanism in the modified example viewed from the side of the seat in a state where the seat lock member is placed at the release position.

FIG. 11 is a cross-sectional view showing the seat lock member driving mechanism in the modified example viewed from the side of the seat in a state of being placed on the seat.

FIG. 12 is a cross-sectional view showing another modification in which the seat lock member drive mechanism is different in the storage type viewing stand of the above-described embodiment in a state in which the seat lock member is placed at the lock position.

Fig. 13 is a cross-sectional view showing the seat lock member driving mechanism in the other modification example seen from the front side of the seat in a state where the seat lock member is placed at the release position.

Fig. 14 (a) is a side view showing the conventional storage type viewing stand in the unfolded state of the seat, and Fig. 14 (b) is a side view showing the storage type viewing seat in the storage state of the seat.

(a) to (c) of FIG. 15 are explanatory views showing the operation of the seat when the seat of the storage type viewing stand shown in FIG. 8 moves between the unfolded state and the stored state.

1‧‧‧ seats

2‧‧‧seat

3‧‧‧Seat

3a, 4a‧‧‧ support shaft

4‧‧‧ Backrest

8‧‧‧ beams

9‧‧‧Frame

10‧‧‧ partition board

11‧‧‧ elbow

12‧‧‧Backrest drive mechanism

13‧‧‧Motor

14‧‧‧Drive shaft

15‧‧‧ drive gear

16‧‧‧Driven gears

17‧‧‧1st gear set

18‧‧‧ Gear support shaft

19‧‧‧ drive gear

20‧‧‧Driven gears

21‧‧‧2nd gear set

22‧‧‧ Connecting rod

23‧‧‧Connected shaft

28‧‧‧Seat lock component drive mechanism

Claims (5)

The utility model relates to a storage type viewing seat, which comprises: a multi-stage seat, which can move between a stepped deployment position and a storage position where the upper and lower sides overlap; the seat has a seat surface and a backrest, and the seat surface is disposed on the seat platform. The front end portion protrudes forward from the front end portion, and the backrest is located at a rear position of the seat surface and is provided at a front end portion of the seat, and is retractable between an erected use position and a storage position that is lowered rearward. And the backrest driving mechanism moves the backrest between the use position and the storage position; the storage type viewing seat is characterized in that the backrest driving mechanism is a link mechanism, and includes: a first link, one end thereof The portion is coupled to the lower end portion of the backrest, and rotates the backrest between the use position and the storage position, and the backrest is engaged with the fastening portion by movement toward the use position, and the backrest is locked to the backrest a use position; the second link has an end connected to the other end of the first link, and the base is supported by the support shaft; and an actuator to make the second The connecting rod rotates. The accommodating viewing booth according to claim 1, wherein the engaging portion of the backrest driving mechanism is the support shaft. The storage type viewing booth according to the first or second aspect of the patent application, wherein the second-order or second-order upper-lower one of the plurality of stages Each of the seats is supported in a cantilever state via a rear plate member, and the storage type viewing stand includes a seat lock member, a rear end portion of the seat provided in front of the plate material, and a rear end portion of the seat plate. The front end portion of the upper seat is engaged with each other, and is movable between a locking position for fixing the front end portion and a release position for releasing the front end portion; and a seat locking member driving mechanism for the seat locking member Moving between the above locked position and the above released position. The storage type viewing seat according to claim 3, wherein the seat locking member driving mechanism is a screw mechanism that uses a motor to extend a screw shaft that is disposed in a vertical direction or a nut that is screwed to the screw shaft. Rotating, the screw shaft and the nut are relatively moved, so that the seat locking member automatically moves up and down between the locked position and the release position. The storage type viewing seat according to claim 3, wherein the seat locking member driving mechanism is a toggle mechanism that is driven by a foot moving member or a manual member, and the seat locking member is The lock position and the release position are moved up and down.