Glass lift car applied to sightseeing lift

Abstract

A glass car applied to a sightseeing elevator comprises a rear car wall, a left car wall and a right car wall. The rear car wall comprises rear glass and two rear wall base assemblies fixed to the upper end and the lower end of the rear glass correspondingly. The rear wall seat assembly comprises a rear wall seat, the rear wall seat comprises a rear connecting plate, a rear mounting plate, a plurality of vertical parts, an inner decorative plate and a rear wall plate, the rear mounting plate and the rear connecting plate are fixedly connected with the two ends of the vertical parts in the vertical direction respectively, and the inner decorative plate and the rear wall plate are connected with the front ends and the rear ends of the vertical parts respectively; the side, opposite to the vertical piece, of the rear mounting plate is provided with two rear stand column bases distributed left and right, and the rear connecting plate, the inner decorative plate, the rear mounting plate and the two rear stand column bases define a rear wall vertical inserting groove allowing the vertical end of the rear glass to be inserted and mounted. The relative positions of the rear connecting plate and the rear mounting plate are effectively kept through the vertical pieces, the problem of glass position change caused by frame deformation is avoided, the glass mounting precision and stability are improved, and the safety of an elevator and the sightseeing experience of passengers are further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, and particularly relates to a glass car used for an observation elevator. Background Art

[0002] In the technical field of elevators, in order to meet the high requirements of passengers for a wide view and viewing experience, as an innovative design, glass cars have been gradually widely used. The applicant previously proposed a glass car design with significant sightseeing characteristics in the technical solution of patent number 202123299668.5. This design uses a large single-piece glass to cover the sightseeing window of the car, greatly expanding the sightseeing area inside the car and providing passengers with an unparalleled visual enjoyment.

[0003] However, although this technical solution has achieved remarkable results in improving the passenger experience, some structural deficiencies have been exposed in actual applications. For example, in this technical solution, the sightseeing window glass of the glass car is installed and limited by an upper frame and a lower frame. These frames are U-shaped members formed by bending through sheet metal processing. During actual installation, the two ends of the upper frame and the lower frame are respectively connected to two support frames to keep their two ends from deforming. However, there is a lack of additional support structures in the middle positions of the upper frame and the lower frame. Due to the relatively large overall weight of the single-piece glass, when the glass is installed on the frame, especially in the middle position of the frame, a relatively large pressure will be generated. Without sufficient support, this pressure is likely to cause the middle parts of the upper frame and the lower frame to deform. The deformation will not only affect the installation accuracy and stability of the glass, causing the position of the glass to shift, but may also cause the glass to become loose and even increase the risk of glass breakage. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a glass car used for an observation elevator.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A glass car used for an observation elevator, comprising a car bottom, a car top, a front car wall, a rear car wall, a left car wall and a right car wall; characterized in that: the rear car wall comprises a rear glass, two rear column components respectively fixing the left and right ends of the rear glass, and two rear wall seat components respectively fixing the upper and lower ends of the rear glass. The two rear column components are respectively connected to the rear ends of the left car wall and the right car wall, and a rear slot for inserting and installing the transverse end of the rear glass is provided on the rear column component.

[0007] The rear wall seat assembly includes a rear wall seat, and the rear wall seat includes a rear connecting plate, a rear mounting plate, a plurality of vertical members, an inner decorative plate, and a rear wall plate. The plurality of vertical members are arranged at intervals in sequence from left to right. The rear mounting plate and the rear connecting plate are respectively fixedly connected to both ends of the vertical members in the vertical direction. The rear connecting plates of the two rear wall seat assemblies are respectively connected to the car bottom and the car top. The inner decorative plate and the rear wall plate are respectively connected to the front and rear ends of the vertical members;

[0008] On one side of the rear mounting plate facing away from the vertical members, there are two rear column seats distributed left and right, and the corresponding rear column seats and the rear column assembly are connected to each other in the vertical direction. The rear connecting plate, the inner decorative plate, the rear mounting plate, and the two rear column seats enclose a rear wall vertical slot for the vertical end of the rear glass to be inserted and installed.

[0009] In the present utility model, the rear wall seat assembly further includes an outer decorative cover, and the outer decorative cover is arranged to wrap the outside of the rear wall seat.

[0010] In the present utility model, the outer decorative cover is provided with an outer decorative extension portion, and the inner decorative plate is provided with an inner decorative extension portion. Both the outer decorative extension portion and the inner decorative extension portion extend to the insertion opening position of the rear wall vertical slot, and a vertical avoidance opening for the rear glass to be inserted into the rear wall vertical slot is left between the two outer decorative extension portions and the inner decorative extension portion.

[0011] In the present utility model, side car wall connection seats are provided at both the left and right ends on the front surface of the rear wall plate. Both ends of the side car wall connection seats are respectively fixedly connected to the rear connecting plate and the rear mounting plate, and the two side car wall connection seats are respectively used to connect the left car wall and the right car wall.

[0012] In the present utility model, a rear pressure strip is installed on the side of the rear mounting plate facing the rear glass, and the rear pressure strip is installed on the rear mounting plate in an adjustable position in the front and rear directions.

[0013] In the present utility model, the rear column assembly includes a glass column front sealing plate, a glass column rear sealing plate, a glass column fixing member, and two rear column end caps. The two rear column end caps are respectively fixed at the upper and lower ends on the back surface of the glass column front sealing plate. The upper and lower ends on the front surface of the glass column rear sealing plate are respectively connected to the two rear column end caps; the glass column fixing member is fixed on the back surface of the glass column front sealing plate, and the front surface of the glass column rear sealing plate fits against the rear side of the glass column fixing member; the top view cross-section of the glass column fixing member is U-shaped, and the rear side slot is formed by the U-shaped groove of the glass column fixing member.

[0014] In the present utility model, at one end of the glass column front sealing plate and the glass column rear sealing plate close to the glass column fixing member, there are bent column decorative flanges extending to the insertion opening position of the rear side slot, and a side avoidance opening for the rear glass to be inserted into the rear side slot is left between the two column decorative flanges.

[0015] In the present utility model, one end of the front sealing plate of the glass column, which is far away from the glass column fixing member, is bent backward to form a column bending edge, and the column bending edge is bent to form a column matching edge attached to the front surface of the rear sealing plate of the glass column.

[0016] In the present utility model, the right car wall includes a car wall frame and a right glass. At least two side sightseeing windows are provided on the car wall frame, and one piece of the right glass is installed in each side sightseeing window.

[0017] In the present utility model, the car wall frame includes an upper side seat connected to the bottom of the car top, a lower side seat connected to the top of the car bottom, and front side columns, middle side columns and rear side columns arranged from front to back. The tops of the front side columns, middle side columns and rear side columns are all connected to the upper side seat, and the bottoms are all connected to the lower side seat. A side sightseeing window is formed by enclosing between the front side columns, middle side columns, upper side seat and lower side seat, and between the rear side columns, middle side columns, upper side seat and lower side seat. Right installation slots for inserting the end edges of the right glass are provided on the front side columns, rear side columns, middle side columns, upper side seat and lower side seat.

[0018] The beneficial effects of the present utility model: The rear wall seat assembly of this embodiment includes a rear connecting plate, a rear mounting plate, an inner decorative plate, a rear wall plate, and a plurality of vertical members arranged from left to right. These vertical members not only effectively maintain the relative positions of the rear connecting plate and the rear mounting plate, preventing the deformation of the rear mounting plate, but also make the structure of the entire rear wall seat assembly more stable and reliable through their design. This embodiment also cleverly designs a rear wall vertical slot, which is formed by enclosing the rear connecting plate, the inner decorative plate, the rear mounting plate and two rear column seats, and is specifically used for inserting and installing the vertical end of the rear glass. This design not only enables the rear glass to be better positioned, avoiding the problem of glass position change caused by the deformation of the frame, but also improves the installation accuracy and stability of the glass, further enhancing the safety of the elevator and the sightseeing experience of passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0020] Figure 1 is a three-dimensional view of the glass car Figure I ;

[0021] Figure 2 is a three-dimensional view of the glass car Figure II ;

[0022] Figure 3 is a three-dimensional view of the rear car wall;

[0023] Figure 4 is an exploded schematic view of the rear wall seat;

[0024] Figure 5 Schematic diagram of the rear glass in the vertical slot on the rear wall

[0025] Figure 6 Schematic diagram of the rear pillar assembly

[0026] Figure 7 Schematic diagram of the front car wall and the left car wall

[0027] Figure 8 Cross-sectional view of the glass car Detailed implementation mode

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then such directional indications will also change accordingly.

[0030] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the present utility model, then such descriptions of "first" or "second" etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0031] Refer to Figure 1-8, a glass car used in an observation elevator, comprising a car bottom 1, a car top 2, a front car wall 3, a rear car wall 4, a left car wall 5 and a right car wall 6. The bottoms of the front car wall 3, the left car wall 5 and the right car wall 6 are all connected to the car bottom 1, and the tops are all connected to the car top 2. The left and right ends of the front car wall 3 are respectively connected to the front ends of the left car wall 5 and the right car wall 6. The rear car wall 4 includes a rear glass 41, two rear column assemblies 42 respectively fixing the left and right ends of the rear glass 41, and two rear wall seat assemblies 43 respectively fixing the upper and lower ends of the rear glass 41. The two rear column assemblies 42 are respectively connected to the rear ends of the left car wall 5 and the right car wall 6, and a rear side slot 420 for inserting and installing the lateral end of the rear glass 41 is provided on the rear column assembly 42.

[0032] Further, the rear wall seat assembly 43 includes a rear wall seat. The rear wall seat includes a rear connecting plate 431, a rear mounting plate 432, a plurality of vertical members 433, an inner decorative plate 434 and a rear wall plate 435. The rear mounting plate 432 and the rear connecting plate 431 are respectively fixedly connected to the two ends of the vertical member 433 in the vertical direction. The rear connecting plates 431 of the two rear wall seat assemblies 43 are respectively connected to the car bottom 1 and the car top 2. The plurality of vertical members 433 are arranged at intervals from left to right. The inner decorative plate 434 and the rear wall plate 435 are respectively connected to the front and rear ends of the vertical member 433. Two rear column seats 437 distributed left and right are provided on the side of the rear mounting plate 432 facing away from the vertical member 433, and the rear column seats 437 corresponding in the vertical direction are connected to the rear column assembly 42. The rear connecting plate 431, the inner decorative plate 434, the rear mounting plate 432 and the two rear column seats 437 enclose a rear wall vertical slot 430 for inserting and installing the vertical end of the rear glass 41.

[0033] The rear wall seat assembly 43 of this embodiment includes a rear connection plate 431, a rear mounting plate 432, an inner decorative plate 434, a rear wall plate 435, and a plurality of vertical members 433 arranged from left to right. These vertical members 433 not only effectively maintain the relative positions of the rear connection plate 431 and the rear mounting plate 432, preventing the deformation of the rear mounting plate 432, but also make the structure of the entire rear wall seat assembly 43 more stable and reliable through their design. This embodiment also ingeniously designs a rear wall vertical slot 430, which is enclosed by the rear connection plate 431, the inner decorative plate 434, the rear mounting plate 432, and two rear column seats 437, and is specifically used for inserting and installing the vertical end of the rear glass 41. This design not only enables the rear glass 41 to be better positioned, avoiding the problem of glass position change caused by the deformation of the frame, but also improves the accuracy and stability of glass installation, further enhancing the safety of the elevator and the sightseeing experience of passengers. In summary, the design scheme of the glass car rear wall seat assembly 43 of this embodiment effectively solves the problems of easy deformation of the frame, easy loosening and damage of the glass in the prior art by optimizing the frame structure and adding vertical support members, providing a safer, more stable and more comfortable sightseeing experience for passengers.

[0034] As a preferred embodiment, the rear wall seat assembly 43 further includes an outer decorative cover 436, and the outer decorative cover 436 is arranged to wrap the outside of the rear wall seat. Further, the outer decorative cover 436 is provided with an outer decorative extension 4361, the inner decorative plate 434 is provided with an inner decorative extension 4341, both the outer decorative extension 4361 and the inner decorative extension 4341 extend to the insertion opening position of the rear wall vertical slot 430, and a vertical avoidance opening for inserting the rear glass 41 into the rear wall vertical slot 430 is left between the two outer decorative extensions 4361 and the inner decorative extension 4341. The outer decorative extension 4361 and the inner decorative extension 4341 are used to partially block the insertion opening position of the rear wall vertical slot 430, avoiding excessive exposure of the structure inside the rear wall vertical slot 430, thereby improving the aesthetics of the glass car.

[0035] As a preferred embodiment, the top view cross-section of the vertical member 433 is U-shaped. The vertical member 433 includes a front vertical connection portion, a middle vertical connection portion, and a rear vertical connection portion that are sequentially connected into a U-shaped structure. The front vertical connection portion is connected to the inner decorative plate 434, the rear vertical connection portion is connected to the rear wall plate 435, and the front vertical connection portion, the middle vertical connection portion, and the rear vertical connection portion are all connected to the rear connection plate 431 and the rear mounting plate 432 to ensure the connection quality.

[0036] In this embodiment, side car wall connection seats 438 are provided at both the left and right ends on the front surface of the rear wall plate 435. Both ends of the side car wall connection seat 438 are fixedly connected to the rear connection plate 431 and the rear mounting plate 432 respectively. The two side car wall connection seats 438 are respectively used for connecting the left car wall 5 and the right car wall 6. Specifically, the top view cross-section of the car wall connection seat 438 is U-shaped, and side car wall connection holes are provided on the car wall connection seat 438 for cooperating with bolts to connect the left car wall 5 and the right car wall 6.

[0037] In this embodiment, a rear bead 439 is installed on the side of the rear mounting plate 432 facing the rear glass 41. The rear bead 439 is installed on the rear mounting plate 432 in an adjustable manner in the front-rear position, so as to facilitate the front-rear movement of the rear bead 439 and make the rear bead 439 better press the rear glass 41. Specifically, the rear bead 439 is provided with an oblong hole extending from front to back in the length direction. The screw of the bead bolt passes through the oblong hole and is threadedly connected to the rear mounting plate 432. After loosening the bead bolt, the rear bead 439 can be moved back and forth.

[0038] In this embodiment, the rear column assembly 42 includes a front glass column sealing plate 421, a rear glass column sealing plate 422, a glass column fixing member 423 and two rear column end caps 424. The front glass column sealing plate 421 and the rear glass column sealing plate 422 are arranged front and rear. The two rear column end caps 424 are respectively fixed at the upper and lower ends on the back surface of the front glass column sealing plate 421. The upper and lower ends on the front surface of the rear glass column sealing plate 422 are respectively connected to the two rear column end caps 424. The glass column fixing member 423 is fixed on the back surface of the front glass column sealing plate 421. The front surface of the rear glass column sealing plate 422 is attached to the rear side of the glass column fixing member 423. The top view cross-section of the glass column fixing member 423 is U-shaped. The rear side slot 420 is formed by the U-shaped groove of the glass column fixing member 423. Both the front glass column sealing plate 421 and the rear glass column sealing plate 422 are bent at one end close to the glass column fixing member 423 to form column decorative folding edges extending to the insertion port position of the rear side slot 420. A side avoidance opening for the rear glass 41 to be inserted into the rear side slot 420 is left between the two column decorative folding edges. The column decorative folding edges are used to partially block the insertion port position of the rear side slot 420 to avoid excessive exposure of the structure in the rear side slot 420, thereby improving the aesthetics of the glass car.

[0039] In this embodiment, in order to improve the aesthetics of the glass car, at one end of the front sealing plate 421 of the glass column away from the glass column fixing member 423, there is a column bending edge 4211 bent backward. The column bending edge 4211 is bent to form a column mating edge 4212 attached to the front surface of the rear sealing plate 422 of the glass column. The column mating edge 4212 and the column bending edge 4211 jointly enclose the opening at one end between the front sealing plate 421 and the rear sealing plate 422 of the glass column, ensuring the aesthetics of the rear column assembly 42.

[0040] As a preferred embodiment, the front car wall 3 includes a door lintel 31, a left front wall 32, and a right front wall 33. The door lintel 31 is connected to the bottom of the car top 2. The tops of the left front wall 32 and the right front wall 33 are respectively connected to the bottoms of the left and right ends of the door lintel 31, and the bottoms are connected to the top of the car bottom 1. The left front wall 32, the right front wall 33, the door lintel 31, and the car bottom 1 enclose a car door opening to facilitate passengers entering and exiting the car.

[0041] As a preferred embodiment, the left car wall 5 includes a left middle wall 51, a left front side wall 52 and a left rear side wall 53 respectively connected to the front and rear ends of the left middle wall 51. The front end of the left front side wall 52 is connected to the left end of the left front wall 32, and the rear end of the left rear side wall 53 is connected to the rear column assembly 42 located at the left end. In this embodiment, the left middle wall 51, the left front side wall 52, and the left rear side wall 53 are all made of pure metal plates and are arranged in a light-tight manner.

[0042] As a preferred embodiment, the right car wall 6 includes a car wall frame and a right glass 61. At least two side sightseeing windows are provided on the car wall frame, and one piece of the right glass 61 is installed in each side sightseeing window. Specifically: the car wall frame includes an upper side seat 62 connected to the bottom of the car top 2, a lower side seat 63 connected to the top of the car bottom 1, and front side columns 64, middle side columns 65, and rear side columns 66 arranged from front to back. The tops of the front side columns 64, middle side columns 65, and rear side columns 66 are all connected to the upper side seat 62, and the bottoms are all connected to the lower side seat 63. A side sightseeing window is enclosed between the front side columns 64, middle side columns 65, upper side seat 62, and lower side seat 63, and between the rear side columns 66, middle side columns 65, upper side seat 62, and lower side seat 63. Right installation slots for inserting the end edges of the right glass 61 are provided on the front side columns 64, rear side columns 66, middle side columns 65, upper side seat 62, and lower side seat 63. In addition, a right elastic rubber pad may be provided on the outer peripheral edge of the right glass 61 to prevent damage to the right glass 61 caused by rigid extrusion. The right car wall 6 first defines the position between the upper side seat 62 and the lower side seat 63 on the side columns through the front side columns 64, middle side columns 65, and rear side columns 66 to ensure the structural strength of the right car wall 6, and then ensures the sightseeing view of the position of the right car wall 6 through the two right glasses 61 to prevent displacement due to the excessive weight of a single right glass 61.

[0043] The above are only the preferred embodiments of the present utility model. Any technical solutions that achieve the purpose of the present utility model by substantially the same means fall within the protection scope of the present utility model.

Claims

1. A glass car used in an observation elevator, comprising a car bottom (1), a car top (2), a front car wall (3), a rear car wall (4), a left car wall (5) and a right car wall (6); characterized in that: The rear car wall (4) includes a rear glass (41), two rear column assemblies (42) respectively fixing the left and right ends of the rear glass (41), and two rear wall seat assemblies (43) respectively fixing the upper and lower ends of the rear glass (41). The two rear column assemblies (42) are respectively connected to the rear ends of the left car wall (5) and the right car wall (6). A rear side slot (420) for inserting and installing the lateral end of the rear glass (41) is provided on the rear column assembly (42). The rear wall seat assembly (43) includes a rear wall seat. The rear wall seat includes a rear connecting plate (431), a rear mounting plate (432), a plurality of vertical members (433), an inner decorative panel (434), and a rear wall plate (435). The plurality of vertical members (433) are arranged at intervals from left to right. The rear mounting plate (432) and the rear connecting plate (431) are respectively fixedly connected to the two ends of the vertical member (433) in the vertical direction. The rear connecting plates (431) of the two rear wall seat assemblies (43) are respectively connected to the car floor (1) and the car top (2). The inner decorative panel (434) and the rear wall plate (435) are respectively connected to the front and rear ends of the vertical member (433). Two rear column seats (437) distributed left and right are provided on the side of the rear mounting plate (432) facing away from the vertical member (433). The rear column seats (437) corresponding in the vertical direction are connected to each other with the rear column assembly (42). The rear connecting plate (431), the inner decorative panel (434), the rear mounting plate (432), and the two rear column seats (437) enclose a rear wall vertical slot (430) for inserting and installing the vertical end of the rear glass (41).

2. The glass car applied to the sightseeing elevator according to claim 1, wherein: The rear wall seat assembly (43) further includes an outer decorative cover (436). The outer decorative cover (436) is arranged to wrap the outside of the rear wall seat.

3. A glass car used in an observation elevator according to claim 2, characterized in that: An outer decorative extension (4361) is provided on the outer decorative cover (436), and an inner decorative extension (4341) is provided on the inner decorative panel (434). Both the outer decorative extension (4361) and the inner decorative extension (4341) extend to the insertion opening position of the rear wall vertical slot (430). A vertical avoidance opening for inserting the rear glass (41) into the rear wall vertical slot (430) is left between the two outer decorative extensions (4361) and the inner decorative extension (4341).

4. A glass car used in an observation elevator according to claim 1, wherein: Side car wall connection seats (438) are provided at both the left and right ends on the front side of the rear wall plate (435). The two ends of the side car wall connection seat (438) are respectively fixedly connected to the rear connecting plate (431) and the rear mounting plate (432). The two side car wall connection seats (438) are respectively used to connect the left car wall (5) and the right car wall (6).

5. A glass car used in an observation elevator according to claim 1, characterized in that: A rear bead (439) is installed on the side of the rear mounting plate (432) facing the rear glass (41). The rear bead (439) is installed on the rear mounting plate (432) with its front and rear positions adjustable.

6. The glass car applied to the sightseeing elevator according to claim 1, wherein: The rear column assembly (42) includes a front glass column cover plate (421), a rear glass column cover plate (422), a glass column fixing member (423), and two rear column end caps (424). The two rear column end caps (424) are respectively fixed to the upper and lower ends of the back surface of the front glass column cover plate (421). The upper and lower ends of the front surface of the rear glass column cover plate (422) are respectively connected to the two rear column end caps (424). The glass column fixing member (423) is fixed to the back surface of the front glass column cover plate (421), and the front surface of the rear glass column cover plate (422) is attached to the rear side of the glass column fixing member (423). The top view cross-section of the glass column fixing member (423) is U-shaped, and the rear side slot (420) is formed by the U-shaped groove of the glass column fixing member (423).

7. A glass car used in an observation elevator according to claim 6, characterized in that: At one end of the front glass column cover plate (421) and the rear glass column cover plate (422) close to the glass column fixing member (423), there are bent column decorative flanges extending to the insertion port position of the rear side slot (420). A side avoidance opening for the rear glass (41) to be inserted into the rear side slot (420) is left between the two column decorative flanges.

8. The glass car applied to an observation elevator according to claim 6, characterized in that: At one end of the front glass column cover plate (421) away from the glass column fixing member (423), there is a bent-back column bending edge (4211). The column bending edge (4211) is bent to form a column mating edge (4212) attached to the front surface of the rear glass column cover plate (422).

9. A glass car used in an observation elevator according to claim 1, characterized in that: The right car wall (6) includes a car wall frame and a right glass (61). At least two side sightseeing windows are provided on the car wall frame, and one piece of the right glass (61) is installed in each side sightseeing window.

10. A glass car used in an observation elevator according to claim 9, characterized in that: The car wall frame includes an upper side seat (62) connected to the bottom of the car top (2), a lower side seat (63) connected to the top of the car bottom (1), and front side columns (64), middle side columns (65), and rear side columns (66) arranged from front to back. The tops of the front side columns (64), middle side columns (65), and rear side columns (66) are all connected to the upper side seat (62), and the bottoms are all connected to the lower side seat (63). A side sightseeing window is formed by enclosing between the front side columns (64), middle side columns (65), upper side seat (62), and lower side seat (63), and between the rear side columns (66), middle side columns (65), upper side seat (62), and lower side seat (63). Right installation slots for the end edges of the right glass (61) to be inserted are provided on the front side columns (64), rear side columns (66), middle side columns (65), upper side seat (62), and lower side seat (63).

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