Vehicle cab structure

Abstract

To provide a structure around a driver's seat that enables a driver to sit on the seat smoothly and to leave the seat smoothly.SOLUTION: A seat pedestal 48 for supporting a driver's seat has: a base member 58 on which the driver's seat is placed; and support legs 60L, 60R erected on a floor of a driver's cab and connected to a front end of the base member 58. A staircase through which a driver passes to get on is disposed on a left side of the seat pedestal 48. A front left corner (a support-leg outer corner 70) of the support leg 60L on a staircase side is round-chamfered. This makes a foot of the driver getting on / getting off the vehicle less likely to be caught by the support leg 60L.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a structure of a driver's cab of a vehicle, and more particularly to a structure around a seat in which a driver sits. [Background technology]

[0002] The following Patent Document 1 shows a vehicle (10) having a side entrance (60S) on a side of the vehicle. The side entrance (60S) is used by occupants (e.g., passengers) who board the vehicle (10) in the center and rear low floor sections (21A) when getting on and off. A seat (50) is provided on the front high floor section (22A) as a driver's seat where the driver (D) sits. The seat (50) has a frame (50A) fixed on the floor panel (22) of the front high floor section (22A) and a seat cushion (50B) fixed to the frame (50A) (see paragraph 0047). When getting on to the driver's seat, the driver (D) gets on through the side entrance (60S), goes around the side of the seat (50) from the rear, and sits on the seat (50). The reference characters in the parentheses above are those used in the following Patent Document 1, and are not related to the reference characters used in the description of the embodiments of the present application. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-131981 A Summary of the Invention [Problem to be solved by the invention]

[0004] To provide a structure around a seat such as a member to which the seat is fixed, in a vehicle in which a driver sits by going around the side of the seat from the rear, so that the driver can smoothly sit on the seat and smoothly leave the seat. [Means for solving the problem]

[0005] The driver's cab structure of the vehicle of the present invention comprises a driver's seat in which the driver sits, a boarding aisle arranged to the side of the driver's seat through which the driver passes from the rear of the vehicle to the driver's seat, and a seat base supporting the driver's seat, arranged to correspond to both ends of the front edge of the driver's seat and having support legs erected on the driver's cab floor, and the corners formed by the front surface of the support legs and the side surface facing the boarding aisle are rounded. Effect of the Invention

[0006] The corners between the front surface of the support leg and the side surface facing the boarding aisle are rounded, making it less likely that the driver will catch their foot on the corner of the support leg when getting on or off, allowing for smoother boarding and disembarking. [Brief description of the drawings]

[0007] [Figure 1] 1 is a side view showing a schematic configuration of a vehicle according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a side view showing a schematic configuration of a driver's cab. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, terms expressing relative positions and directions such as front, rear, left, right, up, down, etc., express relative positions and directions with respect to a vehicle. In each drawing, the arrow FR points forward, the arrow UP points upward, and the arrow LH points leftward.

[0009] FIG. 1 is a diagram showing a schematic configuration of a main part of a vehicle 10. The vehicle 10 has a structure in which a vehicle body 14 is mounted on a ladder frame 12. The vehicle 10 is a so-called cab-over vehicle in which a driver's cab 16 and a prime mover room 18 below the driver's cab 16 are arranged at the front end of the vehicle. A prime mover for driving the vehicle, such as an electric motor (not shown), is accommodated in the prime mover room 18. A passenger cabin 20 for passengers is arranged behind the driver's cab 16. A boarding / alighting door 21 for passengers to board and alight is provided on the side of the passenger cabin 20. The boarding / alighting door 21 may be provided on the left side of the vehicle for countries and regions where left-hand traffic is prescribed, and on the right side of the vehicle for countries and regions where right-hand traffic is prescribed. In this vehicle 10, the driver also boards and alights from the boarding / alighting door 21 in the same way as passengers. A driver's cab floor 22 of the driver's cab 16 is located at a higher position than a passenger cabin floor 24 of the passenger cabin 20. A windshield 26 is arranged in front of the driver's cab 16.

[0010] FIG. 2 is a side view showing a schematic structure of the cab 16. The vehicle body 14 mounted on the ladder frame 12 includes a front side member 34 as a framework member extending in the front-rear direction on the left and right sides of the front part of the vehicle body 14. The front side member 34 supports a floor panel 36 of the cab floor 22 at its front part, and its rear part is inclined downward toward the rear, and is connected at its rear end to a center side member 38 supporting the passenger compartment floor 24. The framework structure includes a passenger compartment cross member 40 extending in the left-right direction along the front edge of the passenger compartment floor 24, and the passenger compartment cross member 40 intersects and is connected to the center side member 38. A plurality of lower supports 42 are erected on the passenger compartment cross member 40 and arranged along the direction in which the passenger compartment cross member 40 extends. The plurality of lower supports 42 are connected to a plurality of beams 44 (see FIG. 3) arranged to intersect with them. The framework structure further includes a cab cross member 46 extending in the left-right direction along the rear edge of the cab floor 22, and the cab cross member 46 intersects with and is connected to the front side member 34. The lower support pillar 42 and the cab cross member 46 support a seat base 48. More specifically, the lower support pillar 42 supports the seat base 48 via a base support beam 50, which is one of the beams 44. A driver's seat 52 is placed and fixed on the seat base 48. A staircase 54 leading from the passenger compartment floor 24 to the cab floor 22 is provided to the side of the driver's seat 52.

[0011] FIG. 3 is a perspective view showing the cab 16 as seen from the rear. As described above, the beam 44 is provided so as to cross the lower support columns 42 and connect the lower support columns 42 to each other. The upper support column 56 is provided to connect the base support beam 50 and some of the upper beams 44 at the lower part, and the upper end part of the upper support column 56 is connected to a roof frame member (not shown). A staircase 54 is provided to the left of the driver's seat 52, and the driver enters the cab 16 through the staircase. Thus, the staircase 54 is disposed to the side of the driver's seat and defines a boarding passage through which the driver enters the cab 16. The staircase 54 is provided to the left of the driver's seat 52 for specifications for countries with left-hand traffic, and the staircase 54 may be provided to the right of the driver's seat 52 for specifications for countries with right-hand traffic. In addition, in vehicles in which the driver's cab floor 22 is located at the same height as the passenger compartment floor 24, a flat walkway is provided on the side of the driver's seat 52 instead of a staircase 54.

[0012] 4 and 5 are diagrams showing a schematic configuration of the seat base 48, with FIG. 4 being a perspective view and FIG. 5 being a plan view. The seat base 48 has two rod-shaped base members 58 extending in the front-rear direction and arranged parallel to each other, and two support legs 60 erected on the cab floor 22 and connected at their upper ends to the front end of the base members 58. The seat base 48 further includes a brace 62 corresponding to the angle formed by the base members 58 and the support legs 60. The base members 58 and the support legs 60 may be rectangular column-shaped parts having a closed cross-sectional structure. The brace 62 may have a U-shaped cross-sectional shape, and the base members 58 and the support legs 60 may be located inside the U-shape. The two base members 58 are connected to each other at the rear lower surface by a rear connecting plate 64. The two support legs 60 are connected to each other at the front surface by a front connecting plate 66. A fixing plate 68 having a generally trapezoidal shape is provided at the lower end of the support leg 60, and the fixing plate 68 is fixed to the cab floor 22, particularly the cab cross member 46, by fastening elements such as bolts. This fixes the front part of the seat pedestal 48. Also, the rear end part of the base member 58 is fixed to the pedestal support beam 50 by fastening elements such as bolts, and this fixes the rear part of the seat pedestal 48. The driver's seat 52 is placed on the base member 58 of the seat pedestal 48, and is fixed to the base member 58 by fastening elements such as bolts.

[0013] Compared to the driver's seat of a sedan-type passenger car, the seat surface of the driver's seat 52 is higher than the floor panel 36 of the driver's cab floor 22, and the support legs 60 support the driver's seat 52 at a higher position. In addition, in a driver's seat with a high seat surface, the position of the driver's feet is close to the support legs 60 when seated. When the driver sits on the driver's seat 52 from the stairs 54, or when he or she leaves the driver's seat 52 to the stairs 54, it is desirable to prevent the driver's feet from interfering with the support legs 60 on the staircase 54 side.

[0014] In the seat base 48 of this embodiment, the corner 70 formed by the front surface of the left support leg 60L and the side surface on the staircase 54 side (hereinafter, referred to as the support leg outer corner 70) is rounded. Two adjacent surfaces formed by bending a metal plate are generally connected by a cylindrical surface, but the radius of the rounded edge of the support leg outer corner 70 is sufficiently larger than the radius of the cylindrical surface formed by bending. Specifically, the radius of the rounded edge of the support leg outer corner 70 may be 15 mm or more, or 20 mm or more. In this embodiment, the radius of the rounded edge is 24.7 mm. By rounding the support leg outer corner 70, it becomes difficult for the driver to get his / her foot caught on the support leg when getting on or off the vehicle, and the driver can get on or off the vehicle smoothly.

[0015] The outer corner of the right support leg 60R may be rounded to standardize the specifications with a vehicle in which a staircase 54 is provided to the right of the driver's seat 52. In addition, in order to share the left and right support legs 60L, 60R, the inner corners of the front surface of the support leg 60 may be rounded in addition to the outer corners. [Explanation of symbols]

[0016] 10 vehicle, 14 car body, 16 cab, 21 boarding / alighting door, 22 cab floor, 36 floor panel, 42 lower support column, 44 beam, 48 seat base, 50 base support beam, 52 driver's seat, 54 staircase (boarding aisle), 58 base member, 60 support leg, 62 brace, 64 rear connecting plate, 66 front connecting plate, 68 fixing plate, 70 support leg outer corner.

Claims

[Claim 1] A driver's seat installed in a driver's cab of a vehicle, on which a driver sits; a boarding passage disposed adjacent to a side of the driver's seat, the driver passing through the boarding passage from a rear side of the vehicle to the driver's seat; a seat base supporting the driver's seat, the seat base being supported by a driver's cab cross member which is a part of a vehicle body framework and extends in the left-right direction along a rear edge of a driver's cab floor, and a plurality of lower supports erected on a passenger compartment floor of a passenger compartment disposed behind the driver's cab; Equipped with the seat base includes two rod-shaped base members extending in the front-rear direction of the vehicle and arranged parallel to each other, the two base members having rear ends fixed to base support beams connected to the plurality of lower pillars, and support legs fixed to the cab cross member and standing on the driver's seat floor, disposed in correspondence with both ends of the front edge of the driver's seat, and connected at their upper ends to the front ends of the two base members, The support leg is located forward of the front edge of the driver's seat, and a corner formed by a front surface of the support leg and a side surface on the boarding aisle side is rounded and chamfered, the boarding passage is a staircase provided between the cabin floor and the driver's cab floor that is located at a position higher than the cabin floor, The cab floor forms a flat floor surface that is continuous with the portion where the stairs are connected and the portion in front of the driver's seat. Vehicle cab structure.

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