High roof structure of truck

Abstract

A high roof structure for a truck in which a high roof type roof panel is attached above a cab body, the roof panel being provided with a main body part constituting a ceiling part and a side surface part having a corner part formed by bending downward from the main body part toward a side direction, the roof panel being supported by a roof frame from a vehicle interior side, the roof frame having a main frame (3) and a sub-frame (4), the sub-frame (4) being supported by the main frame (3) and the sub-frame (4) being supported by the main frame (3), and the sub-frame (4) being supported by the main frame (3). The main frame is provided with a width direction portion (31) along the main body portion and a vertical direction portion (35) having a bent portion (33) separated from the corner portion with a curvature smaller than that of the corner portion from the width direction portion toward the side direction, the lower end portion of the vertical direction portion is installed on the cab main body, and the auxiliary frame is arranged between the main frame (3) and the roof panel. The auxiliary frame (4) is provided with a bent part (41) along the shape of a corner part, one end of the auxiliary frame (4) is connected with the main frame (3) in the vicinity of the connecting part, and the other end of the auxiliary frame (4) is installed on the cab main body (5).

Description

Technical Field

[0001] The present invention relates to a high-roof structure of a truck in which a high-roof type roof panel is installed above a cab body. Background Art

[0002] In large trucks, in order to expand the passenger compartment formed in the cab, a high-roof structure in which the roof panel is provided at a position higher than normal is sometimes adopted. Such a high-roof structure is installed above a cab body with an open ceiling portion (see Patent Documents 1 and 2).

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2017-144884

[0006] Patent Document 2: Japanese Unexamined Patent Application Publication No. 2017-144967 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] In a cab adopting a high-roof structure, a frame extending in the vehicle width direction is disposed on the inner side of the passenger compartment of the roof panel to support the roof panel. Since this frame is generally formed of a thick plate, it is difficult to form, and in particular, it is difficult to form following the shape of the corners at the left and right edges in the vehicle width direction of the roof panel.

[0009] Therefore, at the left and right corners of the roof panel, the curvature of the frame is smaller (the radius of curvature is larger) than that of the roof panel, and the frame is separated from below the roof panel. As a result, when a load is input from above the roof panel, only the straight portion at the center in the vehicle width direction of the frame bears the load, and the support structure becomes fragile.

[0010] The present application was created in view of the above problems, and an object thereof is to provide a high-roof structure of a truck that increases the follow-up portion of the frame to the shape of the roof panel at the left and right corners of the high-roof type roof panel and improves the support rigidity of the frame.

[0011] Means for Solving the Problems

[0012] The present application was made to solve at least a part of the above problems and can be implemented as the following aspects or application examples.

[0013] (1) The high-roof structure of the truck in this application example is a high-roof structure of a truck in which a high-roof type roof panel is installed above the cab main body with an open roof portion. It is characterized in that the roof panel has: a main body portion constituting the roof portion; and side face portions having corners that are bent downward from the main body portion toward the left and right sides of the vehicle, and is supported from the inside of the cab by a roof frame. The roof frame has: a main frame, the main frame having a width direction portion that extends linearly in the vehicle width direction along the main body portion, and an up-down direction portion having a bent portion that is bent downward from the width direction portion toward the left and right sides of the vehicle with a curvature smaller than that of the corner and is separated from the corner, and the lower end portion of the up-down direction portion is installed on the cab main body; and a sub-frame, the sub-frame is disposed between the up-down direction portion of the main frame and the side face portion of the roof panel, and is bent downward from near the connecting portion of the main body portion and the side face portion toward the left and right sides of the vehicle and extends toward the cab side. The sub-frame has a bent portion formed to conform to the shape of the corner of the roof panel. One end portion of the sub-frame is joined to the main frame near the connecting portion, and the other end portion is installed on the cab main body.

[0014] According to this application example, in addition to the main frame that extends in the vehicle width direction from the main body portion of the roof panel to the side face portion, a sub-frame is additionally disposed between the main frame and the roof panel and is bent downward from near the connecting portion of the main body portion and the side face portion of the roof panel toward the left and right sides of the vehicle and extends toward the cab side. By means of the sub-frame, the portion of the roof frame that follows the shape of the roof panel can be increased, the support rigidity of the roof frame can be improved by the sub-frame, and the durability against input loads from above the roof panel can be improved.

[0015] (2) Preferably, the cross-sectional shape of the main frame is formed into a hat shape composed of a web portion, a flange portion, and an arm portion, and the arm portion of the width direction portion of the main frame is joined to overlap with the roof panel.

[0016] By forming the cross-sectional shape of the main frame into a hat shape in this way, rigidity can be ensured, and by joining the arm portion of the main frame to overlap with the roof panel, a closed cross-sectional shape is formed and the rigidity of the high-roof structure is further improved.

[0017] (3) Preferably, the sub-frame has a hat-shaped cross-sectional portion whose cross-sectional shape is formed into a hat shape composed of a web portion, a flange portion, and an arm portion. Inside the recess formed by the web portion and the flange portion of the hat-shaped cross-sectional portion, the main frame is enclosed, and the sub-frame is joined to overlap with the main frame at the one end portion.

[0018] By enclosing the main frame within the recess formed by the web portion and the flange portion of the hat-shaped cross-sectional portion of the sub-frame, and joining the sub-frame to overlap with the main frame at one end thereof, even when the sub-frame is added to the main frame, the amount by which the roof frame protrudes into the vehicle interior space can be minimized, and the size of the sub-frame can be increased, further enhancing the rigidity of the high-roof structure. Additionally, by forming a double closed cross-sectional shape using the main frame and the sub-frame, the rigidity of the high-roof structure is further enhanced.

[0019] (4) Preferably, the height of the flange portion of the sub-frame decreases as it approaches the one end portion, and at the one end portion, the web portion of the sub-frame is formed coplanarly with the arm portion. At the portion where the web portion and the arm portion of the sub-frame are coplanar, the sub-frame is joined to overlap with the main frame and the roof panel.

[0020] By configuring to enclose the main frame within the recess of the sub-frame and joining the sub-frame to overlap with the main frame and the roof panel at the portion where the web portion and the arm portion are coplanar at one end of the sub-frame, the support rigidity of the roof panel can be increased.

[0021] (5) Preferably, the sub-frame supports the roof panel from the vehicle interior side at a position lateral to the portion overlapping with the main frame.

[0022] Thereby, the durability against input loads from above the roof panel is improved.

[0023] Advantages of the Invention

[0024] According to the present application, it is possible to increase the portion of the roof frame that follows the shape of the roof panel through the sub-frame, enhance the support rigidity of the roof frame through the sub-frame, and improve the durability against input loads from above the roof panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a view showing a main part of a roof frame of a high-roof type truck vehicle according to an embodiment. Figure 1 (a) of Figure 1 FIG. is a perspective view when the main part is viewed from the upper front side on the left side of the vehicle ( Figure 2 corresponding to part E of Figure 1 In (a) of FIG., all hidden shapes are shown by dashed lines. Figure 1 In (b) of FIG., Figure 1 the hidden shape of the main frame is omitted from (a) of Figure 1 In (c) of FIG., Figure 1 is a cross-sectional view taken along line A-A of (a) of Figure 1 In (d) of FIG., Figure 1 is a cross-sectional view taken along line B-B of (a) ofFigure 1 (e) of Figure 1 is a sectional view taken along the C-C direction of (a) of

[0026] Figure 2 is a perspective view of the main frame of the roof frame of a high-roof type truck vehicle of an embodiment when viewed from above the front side on the left side of the vehicle.

[0027] Figure 3 is Figure 1 Figure 1 from (a) to Figure 1 (e) of the exploded perspective view of the main part of the roof frame of the high-roof type truck vehicle shown in

[0028] Figure 4 is to explain Figure 1 Figure 1 from (a) to Figure 1 (e) of the diagram showing the function and effect of the roof frame of the high-roof type truck vehicle shown in Figure 4 (a) of Figure 1 is a longitudinal sectional view taken along the extension direction of the main part shown in Figure 1 sectional view taken along the D-D direction of (a) of Figure 4 (b) of Figure 4 shows the case where the sub-frame is omitted from (a) of Detailed Embodiment

[0029] The embodiments of the present application will be described with reference to the accompanying drawings. These embodiments are merely illustrative and are not intended to exclude various modifications and applications of technologies not explicitly shown in the following embodiments. Each component of these embodiments can be implemented with various modifications without departing from their gist. Additionally, selection and combination can be made as needed.

[0030] [1. Device Configuration]

[0031] In this embodiment, as an example of the high-roof structure of a truck, the ultra-high roof structure of a large truck will be described.

[0032] Furthermore, in the following description, the forward direction of the vehicle is set as the front FR, the opposite direction (the backward direction of the vehicle) is set as the rear RR, and the left and right (left side LH and right side RH) are determined based on the state where the vehicle faces the front FR. In addition, the front-rear direction is also referred to as the vehicle length direction, and the left-right direction is also referred to as the vehicle width direction. Moreover, the direction orthogonal to both the vehicle length direction and the vehicle width direction is referred to as the up-down direction (upward UP and downward DW). The vehicle is located on a horizontal road surface and is in a posture where the up-down direction coincides with the vertical direction (the downward direction coincides with the direction of the gravitational force). In this posture, the vertically upward direction is set as the height direction. ​​

[0033] The large truck of this embodiment is formed as a high-roof vehicle (hereinafter referred to as an ultra-high roof vehicle) whose vehicle top is higher than a so-called high roof that is higher than a general vehicle roof (hereinafter also referred to as a "normal roof"). Since the ultra-high roof vehicle can ensure a relatively high interior space inside the cab, the habitability inside the vehicle is improved. In large trucks and the like, when moving over a long distance, the driver and the like sometimes take a nap or rest in the cab, and the comfort at this time can be improved. However, the ultra-high roof is also a type of high roof, and the ultra-high roof vehicle is included in the high roof vehicle.

[0034] Figure 2 It is a perspective view showing a roof frame 2 that supports a high roof type roof panel 1 provided on the vehicle top of an ultra-high roof vehicle (high roof vehicle) from the inside of the cab. In addition, in Figure 2 a part of the roof panel 1 and the skeletal member 5 of the upper part of the cab body that supports the roof frame 2 and the roof panel 1 is shown by a two-dot chain line.

[0035] As Figure 2 shown, the high roof type roof panel 1 is installed above a cab body (not shown) with an open ceiling part. The roof panel 1 includes: a main body part 11 that constitutes the ceiling part; and a side face part 14 that has a corner part 12 formed by bending downward from the main body part 11 toward the left and right side directions of the vehicle and a side face main body 13 that extends linearly (in a plane) in the vertical direction below the corner part 12.

[0036] In addition, the main body part 11 and the side face part 14 are joined by welding (the joining part is referred to as a "connection part 15"). Such a roof panel 1 is supported by the roof frame 2 from the inside of the cab ( Figure 2 below in the figure). In addition, the main body part 11 of the roof panel 1 is slightly inclined forward as a whole, and the forward inclination angle gradually increases at the front part. In addition, the side face main body 13 below the corner part 12 of the side face part 14 of the roof panel 1 is slightly inclined so as to be slightly located outside the vehicle width direction as it goes downward.

[0037] The roof frame 2, as Figure 1 shown in Figure 1 (a) to Figure 1 (e) of Figure 2 and Figure 4 as exemplified by the frame part on the left side of the front part in (a) of

[0038] The main frame 3 is disposed substantially horizontally along the main body portion 11 of the roof panel 1 (however, it is slightly inclined forward as a whole, and the front portion is sharply inclined forward). The main frame 3 has two width direction portions 31 extending in the vehicle width direction parallel to each other, and three front-rear direction portions 32 intersecting with these width direction portions 31 and extending in the vehicle front-rear direction parallel to each other. They are integrated and form a substantially cross shape in a plan view. The front-rear direction portions 32 are slightly inclined forward as a whole along the shape of the roof panel 1, and the forward inclination angle gradually increases at the front portion.

[0039] Vertical direction portions 35 are provided at the left and right ends of the width direction portions 31. The vertical direction portions 35 have bent portions 33 bent downward from the width direction portions 31 toward the left and right sides of the vehicle, and vertical direction portion main bodies 34 extending linearly (in a plane) in the vertical direction below the bent portions 33. The lower end portions of the vertical direction portions 35 are mounted on the frame member 5 which is a part of the cab main body and is located at an upper position of the cab main body. In addition, in the present embodiment, as Figure 2 shown, on the left and right of the main frame 3, reinforcing members 16 for connecting the vertical direction portion main bodies 34 of the vertically arranged vertical direction portions 35 are fixedly provided from the inside, but they are not essential.

[0040] The bent portion 33 is bent with a curvature smaller than that of the corner portion 12 of the roof panel 1 (a larger radius of curvature). This is because the main frame 3 is difficult to form because it is formed of a thick plate having a higher rigidity than required, and it is difficult to follow the large curvature shape of the corner portion 12.

[0041] Since the curvature of the bent portion 33 is small, as shown in (a) of Figure 4 , the bent portion 33 is displaced toward the inner side in the vehicle width direction (the center side in the vehicle width direction) compared with the corner portion 12. As a result, the vertical direction portion main body 34 below the bent portion 33 of the vertical direction portion 35 has a larger inclination compared with the side face main body 13 of the side face portion 14. Therefore, the bent portion 33 is separated from the corner portion 12 toward the inner side in the vehicle width direction, and most of the vertical direction portion main body 34 is also separated from the side face main body 13 toward the inner side in the vehicle width direction.

[0042] The sub-frame 4 includes a bent portion 41 formed along the shape of the corner portion 12 of the roof panel 1, and a vertical direction portion 42 extending linearly (in a plane) in the vertical direction below the bent portion 41. One end portion of the sub-frame 4 (the end portion on the inner side in the vehicle width direction of the bent portion 41) is joined to the main frame 3 at the joining portion 15, and the other end portion (the lower end portion of the vertical direction portion 42) is mounted on the frame member 5 at the upper part of the cab main body.

[0043] As Figure 1As shown, the cross-sectional shape of the main frame 3 is formed into a hat shape composed of a web portion 3W, a flange portion 3F, and an arm portion 3A, and the arm portions 3A of the width direction portion 31 and the front-rear direction portion 32 of the main frame 3 are joined in an overlapping manner with the roof panel 1.

[0044] On the other hand, the sub-frame 4 has a hat-shaped cross-sectional portion 43 whose cross-sectional shape is formed into a hat shape composed of a web portion 4W, a flange portion 4F, and an arm portion 4A.

[0045] The flange portion 4F of the hat-shaped cross-sectional portion 43 of the sub-frame 4 becomes lower in height as it approaches one end portion (the end portion on the vehicle width direction inner side of the bent portion 41), and at the one end portion, the flange portion 4F disappears and the hat-shaped cross-sectional portion 43 ends, becoming a planar portion 44 formed by the web portion 4W and the arm portion 4A of the hat-shaped cross-sectional portion 43 being coplanar.

[0046] As shown in Figure 1 (c) of Figure 1 (d) of

[0047] That is, in the main frame 3, the web portion 3W is disposed on the vehicle inner side, the flange portion 3F protrudes from the web portion 3W toward the vehicle outer side, and the arm portion 3A is disposed at the protruding end (vehicle outer side) of the flange portion 3F.

[0048] In contrast, the web portion 4W of the hat-shaped cross-sectional portion 43 of the sub-frame 4 is disposed on the vehicle outer side, the flange portion 4F protrudes from the web portion 4W toward the vehicle inner side, and the arm portion 4A is disposed at the protruding end (vehicle inner side) of the flange portion 4F. The hat shape is reverse to that of the main frame 3. As shown in Figure 1 Figure 1 (a) to Figure 1 (e) of

[0049] The main frame 3 is enclosed within the concave portion 45 formed by the web portion 4W of the hat-shaped cross-sectional portion 43 of the sub-frame 4 and the flange portions 4F on both sides thereof. The sub-frame 4 is joined in an overlapping manner with the main frame 3 and is joined in an overlapping manner with the roof panel 1 at the planar portion 44 at one end portion (the end portion on the vehicle width direction inner side of the bent portion 41).

[0050] In addition, although the sub-frame 4 is made of a material having the same plate thickness as the main frame 3, it is formed into a shape with good formability. The bent portion 41 of the sub-frame 4 is formed to have a curvature larger than that of the bent portion 33 of the main frame 3 and close to the curvature of the corner portion 12. As a result, the bent portion 41 of the sub-frame 4 approaches the corner portion 12, and the up-down direction portion 42 also approaches the side surface main body 13.

[0051] As a result, as shown in​Figure 4 As shown in (a) of FIG. , the web portion 4W of the sub-frame 4 supports the roof panel 1 from the inside of the vehicle compartment at the side (outer side in the vehicle width direction) of the vehicle width direction with respect to the planar portion 44 that overlaps with the main frame 3.

[0052] [2. Function and Effect]

[0053] According to the high-roof structure of the truck of the present embodiment, the following functions and effects can be obtained.

[0054] (1) Since, in addition to the main frame 3 that extends in the vehicle width direction from the main body portion 11 to the side surface portion 14 of the roof panel 1, a sub-frame 4 is additionally arranged, the follow-up portion of the roof frame 2 to the shape of the roof panel 1 can be increased by the sub-frame 4, and the support rigidity of the roof frame 2 can be improved by the sub-frame 4, and the durability against the input load from above the roof panel 1 can be improved.

[0055] Figure 4 of (a), Figure 4 FIG. (b) shows a state in which a load corresponding to the roof crush test is applied to the structure of the present embodiment. Figure 4 FIG. (a) represents the present embodiment. Figure 4 FIG. (b) represents a comparative example without the sub-frame 4.

[0056] As Figure 4 shown in FIG. (b), in the case without the sub-frame 4, the roof frame 2 is only the main frame 3, and the portion where the roof frame 2 bears the load on the upper surface of the roof is up to the c1 portion, and the a portion becomes a weak portion. In addition, the b1 point of the frame landing point is a high-rigidity point in the skeletal member 5 and its position is determined. Therefore, the load-bearing point c1 of the roof frame 2 and the frame landing point b1 are offset by a large distance d1 in the vehicle width direction, which is very disadvantageous for the load.

[0057] On the contrary, in the case of the present embodiment, since the sub-frame 4 is added and the sub-frame 4 supports the roof panel 1 from the inside of the vehicle compartment at the side of the vehicle width direction with respect to the portion that overlaps with the main frame 3, the portion where the roof frame 2 bears the load on the upper surface of the roof is up to the c2 portion. As a result, the weak portion (a portion) as in the comparative example is eliminated. And the distance between the load-bearing point c2 of the roof frame 2 and the frame landing point b2 is only d2 in the vehicle width direction, which is smaller than the distance d1, and the load can be sufficiently supported.

[0058] (2) The cross-sectional shape of the main frame 3 is formed into a hat shape composed of a web part 3W, a flange part 3F, and an arm part 3A. The arm part 3A in the width direction part of the main frame 3 is joined to overlap with the roof panel 1. Therefore, the support rigidity for supporting the roof panel 1 can be ensured. In addition, by joining the arm part 3A of the main frame 3 to overlap with the roof panel 1, a closed cross-sectional shape is formed, and the rigidity of the high-roof structure is further improved.

[0059] (3) The sub-frame 4 has a hat-shaped cross-sectional part 43 whose cross-sectional shape is formed into a hat shape composed of a web part 4W, a flange part 4F, and an arm part 4A. Inside the recess 45 formed by the web part 4W and the flange part 4F of the hat-shaped cross-sectional part 43, the main frame 3 is enclosed. The sub-frame 4 is joined to overlap with the main frame 3 at one end part (planar part 44) of the sub-frame 4. Therefore, even if the sub-frame 4 is added to the main frame 3, the amount by which the roof frame 2 protrudes into the vehicle interior space can be suppressed as much as possible. In addition, the size of the sub-frame 4 can be increased, and the rigidity of the high-roof structure is further improved. In addition, since a double closed cross-sectional shape is formed by the main frame 3 and the sub-frame 4, the rigidity of the high-roof structure is further improved.

[0060] (4) The flange part 4F of the sub-frame 4 becomes lower in height as it approaches one end part. At the one end part, the web part 4W and the arm part 4A of the sub-frame 4 become coplanar to form a planar part 44. At the planar part 44, the sub-frame 4 is joined to overlap with the main frame 3 and the roof panel 1 (refer to Figure 1 the mesh part of (b)), so that the support rigidity for the roof panel 1 can be improved.

[0061] (5) As described above, the sub-frame 4 supports the roof panel 1 from the vehicle interior side at the side parts on the left and right of the vehicle compared to the part overlapping with the main frame 3. Therefore, the durability against input loads from above the roof panel 1 is improved.

[0062] [3. Others]

[0063] The embodiments have been described above, but the configurations of the above embodiments are examples and can be appropriately modified and implemented without departing from the gist of the present invention.

[0064] For example, an example of adding a sub-frame to the frame parts on the left and right of the front part has been described, but it can also be applied to the frame parts on the left and right of the rear part.

[0065] In addition, the shape of the sub-frame can also be appropriately deformed if the functions as its purpose are ensured.

[0066] Explanation of reference numerals

[0067] 1 Roof panel

[0068] 11 The main body of the roof panel 1

[0069] 12 The corner part of the roof panel 1

[0070] 13 The main body of the side part of the roof panel 1

[0071] 14 The side part of the roof panel 1

[0072] 15 Connecting part

[0073] 16 Reinforcing member

[0074] 2 Roof frame

[0075] 3 Main frame

[0076] 3A The arm part of the main frame 3

[0077] 3F The flange part of the main frame 3

[0078] 3W The web part of the main frame 3

[0079] 31 The width direction part of the main frame 3

[0080] 32 The front - rear direction part of the main frame 3

[0081] 33 The bending part of the main frame 3

[0082] 34 The main body of the up - down direction part of the main frame 3

[0083] 35 The up - down direction part of the main frame 3

[0084] 4 Sub - frame (outer frame)

[0085] 4A The arm part of the sub - frame 4

[0086] 4F The flange part of the sub - frame 4

[0087] 4W The web part of the sub - frame 4

[0088] 41 The bending part of the sub - frame 4

[0089] 42 The up - down direction part of the sub - frame 4

[0090] 43 The hat - shaped cross - section part of the sub - frame 4

[0091] 44 The planar part of the sub - frame 4

[0092] 45 The concave part of the sub - frame 4

[0093] 5 Skeletal member (cab main body)

Claims

1. A high-roof structure for a truck, which is a high-roof structure of a truck in which a high-roof type roof panel is installed above a cab main body with an open roof portion, characterized in that, the roof panel includes: a main body portion constituting the roof portion; and side face portions having corners bent downward from the main body portion toward the left and right sides of the vehicle, and is supported from the inside of the cab by a roof frame. The roof frame has: a main frame, the main frame includes a width direction portion extending linearly in the vehicle width direction along the main body portion, and an up and down direction portion having a bent portion bent downward from the width direction portion toward the left and right sides of the vehicle with a curvature smaller than that of the corner and separated from the corner, and the lower end portion of the up and down direction portion is installed on the cab main body; and a sub-frame, the sub-frame is disposed between the up and down direction portion of the main frame and the side face portion of the roof panel, and bends downward from near the connecting portion of the main body portion and the side face portion toward the left and right sides of the vehicle and extends toward the cab side. The sub-frame includes a bent portion formed to conform to the shape of the corner of the roof panel. One end portion of the sub-frame is joined to the main frame near the connecting portion, and the other end portion is installed on the cab main body.

2. The high-roof structure for a truck according to claim 1, characterized in that, the cross-sectional shape of the main frame is formed into a hat shape composed of a web portion, a flange portion, and an arm portion, and the arm portion of the width direction portion of the main frame is joined to overlap with the roof panel.

3. The high-roof structure for a truck according to claim 2, characterized in that, the sub-frame has a hat-shaped cross-sectional portion whose cross-sectional shape is formed into a hat shape composed of a web portion, a flange portion, and an arm portion. Inside the recess formed by the web portion and the flange portion of the hat-shaped cross-sectional portion, the main frame is enclosed, and the sub-frame is joined to overlap with the main frame at the one end portion.

4. The high-roof structure for a truck according to claim 3, characterized in that, the flange portion of the sub-frame becomes lower in height as it approaches the one end portion, and at the one end portion, the web portion and the arm portion of the sub-frame are formed coplanarly. At the portion where the web portion and the arm portion of the sub-frame become coplanar, the sub-frame is joined to overlap with the main frame and the roof panel.

5. The high-roof structure for a truck according to claim 1, characterized in that, the bent portion of the sub-frame is formed to have a larger curvature than the bent portion of the main frame. The sub-frame supports the roof panel from the inside of the cab at a position on the left and right sides of the vehicle farther from the portion overlapping with the main frame.

Images