Bus seat and fire extinguishing box integrated unit

Abstract

A bus seat and fire extinguishing box integrated unit belongs to the field of automobile fire extinguishing equipment and comprises an assembled fire extinguishing box and a seat, the assembled fire extinguishing box comprises a frame and a top plate, a top seam allowance for mounting the top plate is arranged on an upper border of the frame, the top plate is placed in the top seam allowance of the frame, and the top plate is arranged in the top seam allowance of the frame. The top plate and the upper frame are fixedly connected through two positioning pins and more than two connecting bolts, and the top plate is provided with special-shaped sliding positioning and limiting holes for installing seat supporting legs and feet. Preliminary limiting of the top plate is achieved between the top plate and the frame through the top seam allowance, accurate positioning is achieved between the top plate and the frame through the two positioning pins, plane shearing force generated by the seat in the sudden vehicle killing and variable-speed driving process of a vehicle is evenly decomposed through the top seam allowance, and therefore shearing force on the positioning pins and screws is reduced, and the safety of the vehicle is improved. The number of the screws is less than that of the prior art, so that the seat is convenient to disassemble and assemble, and the defects in the prior art are very conveniently solved.

Description

Background Art

[0001] The utility model relates to a fire extinguishing device for a bus passenger cabin, belonging to the field of fire fighting equipment, in particular to a fire extinguishing integrated box which can be fixedly installed under a bus seat. Technical Field

[0002] Small and medium-sized vehicles such as subway shuttles, airport minibuses, intercity minibuses, and township buses must be equipped with fire extinguishing devices. At present, the fire extinguishing device is usually set in the back row of the driver's seat, located in the left row of the front door. Due to its large size, it occupies at least two seats, and some buses occupy three seats. For buses with limited space, the space waste is too large, which limits the passenger capacity of a single vehicle and is not conducive to energy saving and consumption reduction. For this reason, the applicant has developed a fire extinguishing integrated box that can be fixedly installed under the bus seat. The applicant made a detailed introduction in Chinese patent CN202321169964.X. It does not occupy the seat space and can meet the fire extinguishing system required by public transportation fire protection. The original purpose of the utility model is achieved relatively ideally, but in the implementation process, there is an inconvenient installation between the seat and the top plate, and the connecting bolts between the top plate and the frame will loosen due to continuous vibration. The structure of the assembled fire extinguishing box and the assembly structure between the box and the seat need to be improved. Utility Model Content

[0003] The utility model aims to provide an integrated unit of a bus seat and a fire extinguishing box, which does not occupy the seat space and can be used to install a fire extinguishing box in a fire extinguishing system on the bus.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A bus seat and fire extinguisher box integrated unit comprises an assembled fire extinguisher box and a seat, wherein the assembled fire extinguisher box comprises a frame and a top plate, wherein the top plate is fixed to the frame by screws, and the seat is fixed to the top plate by connecting bolts. The invention is characterized in that a top stop for mounting the top plate is provided on an upper frame of the frame, the top plate is placed in the top stop of the upper frame of the frame, the top plate and the upper frame are fixedly connected by two or more connecting bolts, and a special-shaped sliding limit hole for mounting seat support legs is provided on the top plate.

[0006] Furthermore, the top plate has a quadrilateral shape or a convex body or a concave groove is provided on the side of the quadrilateral, and a corresponding concave groove or convex body is provided on the side of the top stop.

[0007] Furthermore, two positioning pins are provided between the top plate and the top stop.

[0008] Furthermore, the depth of the top stop corresponds to the thickness of the top plate, and the bottom width of the top stop is greater than 15 mm.

[0009] Furthermore, the special-shaped sliding limit hole includes a seating hole, a sliding groove and a limiting hole. The aperture of the seating hole is larger than the maximum diameter of the bolt head of the connecting bolt, the diameter of the limiting hole is larger than the diameter of the threaded rod of the connecting bolt, the initial end width of the sliding groove is larger than the diameter of the limiting hole, and the tail end width of the sliding groove corresponds to the diameter of the limiting hole.

[0010] The spacing between the seating holes and the limiting holes in the same row of special-shaped sliding limiting holes corresponds to the spacing between the mounting holes on the supporting legs.

[0011] Further, the centers of the seating hole and the limiting hole are on the same horizontal line, that is, the vertical coordinates of the centers of the seating hole and the limiting hole are the same, but the horizontal coordinates of the centers of the seating hole and the limiting hole are different.

[0012] Furthermore, the centers of the seating hole and the limiting hole are offset in the vertical direction, and the coordinate sizes of the center of the seating hole and the limiting hole are different.

[0013] Furthermore, the centers of the seating hole and the limiting hole are on the same vertical line, that is, the centers of the seating hole and the limiting hole have the same coordinates in the horizontal direction but different coordinates in the vertical direction.

[0014] Furthermore, the positioning pin is a tapered pin.

[0015] Since a stopper limit structure is adopted between the frame and the top plate of the box body, a top stopper for installing the top plate is provided on the upper frame of the frame, and a special-shaped sliding limit hole for installing the seat support legs is provided on the top plate. The rectangular top plate is placed in the top stopper of the upper frame of the frame to achieve preliminary limit of the top plate, and two positioning pins are used to achieve precise positioning between the top plate and the upper frame. The top plate and the frame are positioned by two positioning pins, and the plane shear force generated by the seat during the sudden braking and speed change of the vehicle is evenly decomposed through the top stopper, while the shear force borne by the positioning pins and screws is relatively small. The screws only play a connecting role in the up and down directions. The up and down pulling force generated by the screws due to the bumps and vibrations of the car is not large, because the deadweight of the seat and the passengers always has a counteracting force on the screws. Therefore, the number of screws is reduced by half compared with the existing technology, and only 4 screws are needed instead of 8 screws. At the same time, the connection fixity between the two screws will not be affected by looseness, which ensures the stability and reliability of the connection between the two screws. More importantly, it is convenient to disassemble and assemble the seat. When installing, just align the bolt head of the connecting bolt with the seat hole and put it directly in, seat it on the top plate, and then push it to the limit position in the direction of the limited hole and tighten the locking nut. On the contrary, when it is necessary to repair the components in the fire extinguisher box, the seat must be removed. At this time, just loosen the locking nut, push the seat in the opposite direction to the seat hole position, and then lift the seat directly upward, which solves the shortcomings of the prior art very conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the installation position structure in a bus cabin.

[0017] Figure 2 It is a structural schematic diagram of the assembled fire extinguishing box in the utility model.

[0018] Figure 3 Schematic diagram of the connection structure between the top plate and the frame.

[0019] Figure 4 Schematic diagram of the top plate structure from a top view.

[0020] Figure 5 Schematic diagram of the connection structure between the supporting legs and the top plate of the seat.

[0021] Figure 6 It is a structural schematic diagram of the fixed connection between the top plate and the frame.

[0022] Figure 7 Schematic diagram of the top structure of the upper frame.

[0023] Figure 8 Another structural schematic diagram of the outer shape of the top plate surface.

[0024] In the figure: 1-frame; 2-top plate; 3-screw; 4-seat; 5-locating pin; 6-connecting bolt; 7-locking nut; 8-groove; 9-convex body; 11-upper frame; 12-top stopper; 21-locating pin hole; 22-screw through hole;

[0025] 23-special-shaped sliding limit hole; 41-supporting leg; 231-seating hole; 232-sliding groove; 233-limiting hole. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and specific examples.

[0027] Embodiment 1: A bus seat and fire extinguisher integrated unit, such as Figure 1-Figure 6As shown, it includes an assembled fire extinguishing box and a seat 4, the assembled fire extinguishing box includes a frame 1 and a top plate 2, a top stop 12 for mounting the top plate 2 is provided on the upper frame 11 of the frame 1, the depth of the top stop 12 corresponds to the thickness of the top plate 2, the bottom width of the top stop 12 is greater than 15 mm, the plane shape of the top plate 2 is rectangular, the rectangular top plate 2 is placed in the top stop 12 of the upper frame 11 of the frame 1, the top plate 2 and the upper frame 11 are fixedly connected by four connecting bolts 6, and two positioning pin holes are provided at intervals on the periphery of the top plate 2 21 and four screw through holes 22, and four special-shaped sliding limit holes 23 for mounting the supporting legs 41 on both sides of the seat 4 are also provided on the top plate 2, and the special-shaped sliding limit holes 23 include a seating hole 231, a sliding groove 232 and a limiting hole 233, the aperture of the seating hole 231 is larger than the maximum diameter of the bolt head of the connecting bolt 6, the diameter of the limiting hole 233 is larger than the diameter of the threaded rod of the connecting bolt 6, the initial end slot width of the sliding groove 232 is larger than the diameter of the limiting hole 233, and the tail end slot width of the sliding groove 232 corresponds to the diameter of the limiting hole 233.

[0028] The spacing between the seating holes 231 and the limiting holes 233 in the same row of special-shaped sliding limiting holes 23 corresponds to the spacing between the mounting holes on the supporting leg 41. In this example, the centers of the seating holes 231 and the limiting holes 233 are on the same horizontal line, that is, the vertical coordinates of the centers of the seating holes 231 and the limiting holes 233 are the same, while the horizontal coordinates of the centers of the seating holes 231 and the limiting holes 233 are different.

[0029] Embodiment 2: Based on Embodiment 1, two positioning pins 5 are added between the top plate 2 and the upper frame 11 to achieve precise positioning between the top plate 2 and the top stop 12 on the upper frame 11. In this example, the positioning pin 5 can be either a cylindrical pin or a conical pin. The use of a conical pin is more convenient for disassembly and assembly.

[0030] Embodiment 3: The difference from Embodiment 1 is that the distribution of the special-shaped sliding limiting holes 23 is different. In this embodiment, the centers of the seating hole 231 and the limiting hole 233 are staggered in the vertical direction, and the coordinate sizes of the center of the seating hole 231 and the limiting hole 233 are different.

[0031] Example 4: The difference from Example 1 is that the distribution of the special-shaped sliding limit holes 23 is different. In this example, the centers of the seating hole 231 and the limiting hole 233 are on the same vertical line, that is, the centers of the seating hole 231 and the limiting hole 233 have the same coordinates in the horizontal direction but different coordinates in the vertical direction.

[0032] Embodiment 5: The difference from Embodiment 1 is that, in the matching structure of the top plate 2 and the top stop 12, in this embodiment, the top plate 2 has a shape of a quadrilateral with a groove 8 on the side, and a convex body 9 corresponding to the groove 8 on the top plate 2 is provided on the side of the top stop 12. The matching structure of the groove 8 and the convex body 8 is added to the matching side of the top plate 2 and the top stop 12. Figure 7 and Figure 8 .

Claims

1. A bus seat and fire extinguisher integrated unit, comprising an assembled fire extinguisher and a seat (4), the assembled fire extinguisher comprising a frame (1) and a top plate (2), the top plate (2) being fixed to the frame (1) by screws (3), the seat (4) being fixed to the top plate (2) by connecting bolts (6), wherein: A top stop (12) for mounting a top plate (2) is provided on the upper frame (11) of the frame (1). The top plate (2) is placed in the top stop (12) of the upper frame (11) of the frame (1). The top plate (2) and the upper frame (11) are fixedly connected by connecting bolts (6). A special-shaped sliding limit hole (23) for mounting a supporting leg (41) of the seat (4) is provided on the top plate (2).

2. According to claim 1, a bus seat and fire extinguisher integrated unit is characterized by: The top plate (2) has a quadrilateral shape or is provided with a convex body (9) or a concave groove (8) on the side of the quadrilateral, and a corresponding concave groove (8) or convex body (9) is provided on the side of the top stop (12).

3. According to claim 1, the bus seat and fire extinguisher integrated unit is characterized by: Two positioning pins (5) are provided between the top plate (2) and the top stop (12) of the upper frame (11) of the frame (1).

4. The bus seat and fire extinguisher integrated unit according to claim 1 is characterized by: The depth of the top stop (12) corresponds to the thickness of the top plate (2); the bottom width of the top stop (12) is greater than 15 mm.

5. The bus seat and fire extinguisher integrated unit according to claim 1 is characterized by: The special-shaped sliding limiting hole (23) comprises a seating hole (231), a sliding groove (232) and a limiting hole (233); the hole diameter of the seating hole (231) is larger than the maximum diameter of the bolt head of the connecting bolt (6); the diameter of the limiting hole (233) is larger than the diameter of the threaded rod of the connecting bolt (6); the initial end groove width of the sliding groove (232) is larger than the diameter of the limiting hole (233); and the rear end groove width of the sliding groove (232) corresponds to the diameter of the limiting hole (233).

6. The bus seat and fire extinguisher integrated unit according to claim 1 is characterized by: The spacing between the seating holes (231) and the limiting holes (233) in the same row of special-shaped sliding limiting holes (23) corresponds to the spacing between the mounting holes on the supporting legs (41).

7. The bus seat and fire extinguisher integrated unit according to claim 5 is characterized by: The centers of the seating hole (231) and the limiting hole (233) are on the same horizontal line, that is, the vertical coordinates of the centers of the seating hole (231) and the limiting hole (233) are the same, while the horizontal coordinates of the centers of the seating hole (231) and the limiting hole (233) are different.

8. The bus seat and fire extinguisher integrated unit according to claim 5 is characterized by: The centers of the seating hole (231) and the limiting hole (233) are staggered in the vertical direction, and the coordinate sizes of the center of the seating hole (231) and the limiting hole (233) are different.

9. The bus seat and fire extinguisher integrated unit according to claim 5 is characterized by: The centers of the seating hole (231) and the limiting hole (233) are located on the same vertical line, that is, the centers of the seating hole (231) and the limiting hole (233) have the same coordinates in the horizontal direction but different coordinates in the vertical direction.

10. The bus seat and fire extinguisher integrated unit according to claim 3 is characterized by: The positioning pin (5) is a tapered pin.

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