Cover mounting structure for industrial vehicle

Abstract

To provide a cover mounting structure of an industrial vehicle capable of suppressing deformation of a cover due to fastening of a fastening bolt and improving design.SOLUTION: In the cover attachment structure of the industrial vehicle having a vehicle body, a cover attached to the vehicle body, and a fastening bolt 34 for attaching the cover to the vehicle body, the vehicle body includes a vehicle body attachment portion having a female screw portion 44 into which the fastening bolt can be screwed, the cover includes a cover main body having a plate shape, and a cover attachment portion attached to the vehicle body attachment portion via the fastening bolt 33, and the female screw portion 44 is inclined with respect to a plate surface of the cover main body in a screwing direction of a fastening member. The cover mounting part is located at a position where the fastening bolt 34 is concealed by the cover body at least when viewed from the 65A of the outer surface of the cover body.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a cover mounting structure for an industrial vehicle. [Background technology]

[0002] Known prior art related to a cover mounting structure for an industrial vehicle is, for example, the top cover mounting structure for a forklift disclosed in Patent Document 1. The forklift top cover mounting structure of Patent Document 1 has a top cover that covers the upper part of a body frame that houses the forklift's drive control unit. Positioning members that position the top cover relative to the body frame are provided at multiple locations along the circumferential direction on at least one of the lower peripheral edge of the top cover and the upper peripheral edge of the body frame, and the top cover is fixed to the body frame by screw members. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-192283 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the forklift top cover mounting structure disclosed in Patent Document 1, the top cover is fixed to the vehicle body frame with a plurality of bolts, which are threaded members, but there is a problem in that the top cover may be deformed, such as flexing, when the bolts are fastened. Also, the bolts for fixing the top cover to the vehicle body are visible when fastened, which reduces the design appeal of the top cover.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a cover mounting structure for an industrial vehicle that can suppress deformation of the cover due to tightening of the fastening bolts and improve design. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides a cover mounting structure for an industrial vehicle having a vehicle body, a cover attached to the vehicle body, and a fastening bolt for attaching the cover to the vehicle body, wherein the vehicle body has a vehicle body mounting portion having a female threaded portion into which the fastening bolt can be screwed, the cover has a plate-shaped cover body and a cover mounting portion provided on the inner surface of the cover body and attached to the vehicle body mounting portion via the fastening bolt, the female threaded portion is formed so that the screwing direction of the fastening bolt is inclined with respect to the plate surface of the cover body, and the cover mounting portion is located in a position where the fastening bolt is hidden by the cover body when viewed from the outer surface of the cover body.

[0007] In the present invention, the female thread of the vehicle body mounting portion on the vehicle body is formed so that the screwing direction of the fastening bolt is inclined with respect to the plate surface of the cover body, which makes it easier to absorb dimensional errors during cover mounting and makes it easier to suppress deformation of the cover. Furthermore, since the cover mounting portion is located in a position where the fastening bolt is hidden by the cover body when viewed from the outer surface of the cover body, the fastening bolt does not detract from the design of the cover, and it is possible to improve the design of the cover.

[0008] Furthermore, in the cover mounting structure for the above-mentioned industrial vehicle, the vehicle body may have a locking portion for locking the cover at a position opposite the cover main body, and the inner surface of the cover main body may have a lockable portion that locks to the locking portion, and the elastic member may be provided on at least one of the locking portion and the lockable portion so that an elastically deformable elastic member is interposed between the locking portion and the lockable portion. In this case, by engaging the locked portion of the cover body with the locking portion of the vehicle body, it becomes easier to position the cover relative to the vehicle body, and dimensional errors can be absorbed by the elastic deformation of the elastic member.

[0009] Furthermore, in the cover mounting structure for the above-mentioned industrial vehicle, the engaging portion may include an axial member that protrudes toward the cover body, and the engaged portion may include the elastic member that allows the axial member to be inserted, and a bracket that is provided on the inner surface of the cover body and supports the elastic member. In this case, when the cover is attached to the vehicle body, the shaft member provided on the engaging portion on the vehicle body is inserted into the elastic member provided on the engaged portion of the cover, thereby increasing the accuracy of positioning the cover relative to the vehicle body and making it easier to engage the cover with the vehicle body.

[0010] In the above-described cover mounting structure for an industrial vehicle, the cover may be a side cover that is mounted to a side of the vehicle body. In this case, since the cover is a side cover, the cover can be locked to the vehicle body prior to installation, allowing the worker to install the fastening bolts without having to support the cover, improving the workability of installing the cover.

[0011] Furthermore, in the above-mentioned cover mounting structure for an industrial vehicle, the cover mounting portion may have a base member provided on the cover main body and having a bolt hole at a position corresponding to the female thread portion, and the base member may be configured to form a recess from the end of the cover main body toward the inner surface. In this case, the base member has a recess formed therein, so that when attaching the cover, the worker can insert his / her hand into the recess, making it easy to carry the cover.

[0012] Furthermore, in the above-mentioned cover mounting structure for an industrial vehicle, the vehicle body mounting portion may have a mounting member that has the female thread portion and is fixed to the vehicle body by a fixing bolt, and the cover mounting portion may be configured to be attached to the vehicle body mounting portion by overlapping with the fixing bolt. In this case, when the cover is attached to the vehicle body, the cover attachment portion is attached to the vehicle body attachment portion so as to overlap the fixing bolt, so that the fixing bolt does not come out of the attachment member and the attachment member can be prevented from falling off the vehicle body.

[0013] In the above-described cover mounting structure for an industrial vehicle, a slit communicating the inside and outside of the cover may be formed in the cover mounting portion. In this case, since a slit is formed in the cover mounting portion, even if a device that becomes hot is installed inside the cover, cooling air for cooling the device can be taken in through the slit. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a cover mounting structure for an industrial vehicle that can suppress deformation of the cover due to fastening bolts and can improve design. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a perspective view of a reach forklift to which a cover mounting structure according to an embodiment of the present invention is applied; [Figure 2] 1 is a plan view of a reach forklift to which a cover mounting structure according to an embodiment of the present invention is applied. [Figure 3] FIG. 2 is an exploded perspective view showing a part of the controller housing portion. [Figure 4] FIG. 2 is a side view of the left frame of the vehicle body. [Figure 5] 5A is a perspective view of the plate member, and FIG. 5B is a view taken along the line AA (line BB) in FIG. [Figure 6] FIG. 10 is a view of the left side cover as seen from the rear surface side facing the left frame. [Figure 7] FIG. 10 is a perspective view of a base member on the front plate of the cover body. [Figure 8] FIG. 10 is a perspective view of a base member on a rear plate portion of the cover body. [Figure 9]FIG. 2(a) is a perspective view of an elastic member, and FIG. 2(b) is a longitudinal sectional view of the elastic member. [Figure 10] FIG. 10 is an explanatory diagram illustrating the mounting state of the left side cover. [Figure 11] FIG. 10 is a perspective view of a base member according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0016] A cover mounting structure for an industrial vehicle according to an embodiment of the present invention will be described below with reference to the drawings. The industrial vehicle of this embodiment is a reach forklift, which is an autonomous forklift capable of unmanned driving, but can also be driven by an operator. The terms "front / back," "left / right," and "up / down" that specify directions are used based on the position of the forklift operator sitting in the driver's seat and facing the forward direction of the forklift.

[0017] First, a reach forklift (hereinafter simply referred to as "forklift") 10 shown in Figure 1 will be described. The vehicle body 11 of the forklift 10 has a vehicle body main body 12 and a pair of left and right reach legs 13 (13R, 13L) extending forward from the front of the vehicle body main body 12. The reach legs 13 are provided with rotatable driven wheels 14 (14R, 14L) that correspond to the front wheels. A cargo handling device 15 is provided at the front of the vehicle body 11, between the reach legs 13.

[0018] The cargo handling device 15 is supported so as to be able to reach in the forward and backward directions. The reach operation of the cargo handling device 15 is performed by the operation of a reach cylinder (not shown) provided at the rear of the vehicle body 12. The cargo handling device 15 includes a mast 16 supported by a pair of left and right reach legs 13, a lift support 17 supported on the mast 16 so as to be able to rise and fall, and a pair of left and right forks 18 provided on the lift support 17.

[0019] As shown in Fig. 2, rear wheels 19, which serve as both drive wheels and steering wheels, are provided on the left rear side of the vehicle body 12. The rear wheels 19 are driven by a traction motor (not shown) and steered by a steering motor (not shown). A standing-type driver's seat 20 is provided on the right rear side of the vehicle body 11. The forklift 10 of this embodiment can be driven unmanned or manned. Caster wheels 21 are supported below the driver's seat 20 on the vehicle body 12.

[0020] A right frame 22 is provided on the right side of the vehicle body 12, and a left frame 23 is provided on the left side of the vehicle body 12. The left frame 23 is curved so as to wrap around from the left of the vehicle body 12 to the rear. A front cover 24 is provided at the front of the vehicle body 12. A substantially L-shaped driver's seat cover 25 is provided from the front to the left of the driver's seat 20. An upper cover 26 is provided to cover the upper part of the area defined by the right frame 22, the left frame 23, the front cover 24, and the driver's seat cover 25. The right frame 22, the left frame 23, the front cover 24, and the driver's seat cover 25 constitute part of the vehicle body 12.

[0021] A steering wheel 27 is provided on the upper cover 26 in a portion located to the left of the driver's seat 20. A direction lever 28 for switching between forward and reverse travel, and multiple loading levers 29 are provided on the upper cover 26 in a portion located in front of the driver's seat 20. The steering wheel 27, direction lever 28, and multiple loading levers 29 are operated when the vehicle is being driven.

[0022] The forklift 10 of this embodiment has a box-shaped controller housing 30 that protrudes to the left from the vehicle body 12. The controller housing 30 houses a plurality of control devices (shown) for enhancing the unmanned driving function. As shown in FIG. 3, the controller housing 30 is made up of the left frame 23, a left side cover 31 that serves as a cover attached to the left frame 23, an upper lid 32 that covers the upper part of the left side cover 31, and a bottom cover 33 that forms the bottom of the controller housing 30. The plurality of control devices (not shown) for enhancing the unmanned driving function are disposed on the outer surface of the left frame 23.

[0023] The cover mounting structure of this embodiment is a mounting structure for a cover that is attached to the left frame 23, and includes the left frame 23 that is part of the vehicle body 11, a left side cover 31 as a cover, and fastening bolts 34 that mount the left side cover 31 to the left frame 23. As shown in Figures 3 and 4, the left frame 23 includes a pair of front and rear plate members 35 that serve as vehicle body mounting portions.

[0024] The plate members 35 are metal members with polygonal cross sections, and are fixed to the front and rear of the left frame 23 so that their longitudinal direction is the up-down direction. As shown in FIG. 5 , the plate member 35 has a front surface 36, a back surface 37, side surfaces 38 and 39, an upper surface 40, a lower surface 41, and a mounting seat surface 42. The front surface 36 and the back surface 37 are substantially parallel to each other, and the back surface 37 is the surface that abuts against the left frame 23. The plate member 35 fixed to the front of the left frame 23 has the side surface 38 facing forward and the side surface 39 facing rearward. The plate member 35 fixed to the rear of the left frame 23 has the side surface 38 facing rearward and the side surface 39 facing forward. The upper surface 40 faces downward, and the lower surface 41 faces upward.

[0025] In the plate member 35 fixed to the front portion of the left frame 23, the mounting bearing surface 42 is a surface obtained by chamfering the corners of the front surface 36 and the side surface 38, and is an inclined surface inclined at 45 degrees with respect to the front surface 36 and the side surface 38. In the plate member 35 fixed to the rear portion of the left frame 23, the mounting bearing surface 42 is a surface obtained by chamfering the corners of the front surface 36 and the side surface 39, and is an inclined surface inclined at 45 degrees with respect to the front surface 36 and the side surface 39. The mounting bearing surface 42 is the attachment point on the vehicle body 12 side to which a cover attachment portion of the left side cover 31, which will be described later, is attached.

[0026] The plate member 35 is provided with a pair of bolt through holes 43 that penetrate from the front surface 36 to the back surface 37. Fixing bolts 44 that fix the plate member 35 to the left frame 23 are screwed into the bolt through holes 43. The fixing bolts 44 are cap bolts, and the heads of the fixing bolts 44 are received in the bolt through holes 43. When the plate member 35 is fixed to the left side cover 31, the end face of the head of the fixing bolt 44 is substantially flush with the front surface 36. The left frame 23 is formed with threaded holes (not shown) into which the fixing bolts 44 are screwed. The plate member 35 also serves as a mounting member that is fixed to the vehicle body by the fixing bolts 44.

[0027] The plate member 35 has a pair of female threads 45 that are perpendicular or nearly perpendicular to the mounting seat surface 42. The female threads 45 are formed as screw holes into which the fastening bolts 34 can be screwed. The female threads 45 are formed on the plate member 35 so that the screwing direction of the fastening bolts 34 is inclined with respect to the plate surface of a cover main body 60 of the left side cover 31, which will be described later. In this embodiment, the female threads 45 are formed near the front end and near the rear end of the plate member 35. The mounting seat surface 42 of the plate member 35 fixed to the front part of the left frame 23 is a surface that is nearly perpendicular to the mounting seat surface 42 of the plate member 35 fixed to the rear part of the left frame 23.

[0028] An upper bracket 46 that supports the top cover 32 is provided on the upper outer surface of the left frame 23. The top cover 32 is rectangular and is supported by the upper bracket 46 so as to protrude to the left side of the left frame 23. An emergency stop button 47 and a start button 48 are provided on the top surface of the top cover 32. The emergency stop button 47 is a button that is used to bring the forklift 10 to an emergency stop while it is traveling, and the start button 48 is a button that is used to start the forklift 10.

[0029] The upper bracket 46 is provided with a support member 49 that supports a shaft member 50. The support member 49 is a member that extends in the front-to-rear direction close to the upper cover 32. Near the front and rear ends of the support member 49, shaft members 50 that protrude toward the left are provided. The shaft members 50 are cylindrical metal pins that correspond to the locking portions that lock the left side cover 31.

[0030] A bottom cover 33 is fixed to the lower part of the outer surface of the left frame 23. The bottom cover 33 has a bottom plate portion 51 and a side plate portion 52 formed along the outer edge of the bottom plate portion 51. The bottom plate portion 51 is a plate portion that protrudes leftward from the left frame 23, and a step is formed by the rear portion of the bottom plate portion 51 being higher than the front portion. The side plate portion 52 has a side surface that is approximately parallel to the left frame 23. Of the side plate portion 52, a concealed surface 53 that is hidden by the left side cover 31 in a side view extends elongatedly in the front-to-rear direction, and an exposed surface 54 behind the concealed surface 53 and not hidden by the left side cover 31 is approximately trapezoidal. A support piece 55 that supports the shaft member 50 that protrudes leftward is provided near the front of the concealed surface 53. A support piece 55 that supports the shaft member 50 that protrudes leftward is provided at the rear of the exposed surface 54 of the side plate portion 52.

[0031] Next, the left side cover 31 will be described in detail. The left side cover 31 corresponds to a cover, but is a side cover attached to the side of the vehicle body 12. As shown in FIG. 6, the left side cover 31 has a plate-shaped cover main body 60, a pair of front and rear base members 61 provided on the cover main body 60, an elastic member 62, and a bracket 63 that supports the elastic member 62. The cover main body 60 is formed by bending a metal plate. When the left side cover 31 is attached to the vehicle body 12, the cover main body 60 has a side plate portion 65 that faces the left frame 23, a front plate portion 66 that faces forward, and a rear plate portion 67 that faces rearward.

[0032] As shown in Fig. 7, a substantially rectangular notch 68 is formed in the front plate portion 66. As shown in Fig. 8, a substantially rectangular notch 69 is formed in the rear plate portion 67. The notches 68, 69 are for attaching the base member 61 to the cover main body 60. The notches 68, 69 are formed in approximately the middle in the longitudinal direction of the front plate portion 66 and the rear plate portion 67. For ease of explanation, Figs. 7 and 8 show the base member 61 with a portion cut away and also show the base member 61 removed from the cover main body 60.

[0033] As shown in FIGS. 7 and 8 , the base member 61 is formed into a box shape using multiple metal plates. The base member 61 includes a first plate portion 71, a second plate portion 72, a third plate portion 73, a fourth plate portion 74, and a fifth plate portion 75. The first plate portion 71 is a rectangular bottom plate of the base member 61. The second plate portion 72 is a pair of plate portions extending from the short sides of the first plate portion 71. The third plate portion 73 is a plate portion extending from one long side of the first plate portion 71, and the fourth plate portion 74 is a plate portion extending from the other long side of the first plate portion 71. The third plate portion 73 is located on the left frame 23 side, and the fourth plate portion 74 is located on the side plate portion 65 side of the cover main body 60. The fifth plate portion 75 is a plate portion extending from the third plate portion 73 and inclined at 45 degrees relative to the third plate portion 73. The base member 61 has a recess 76 formed by the first to fifth plate portions 71 to 75. The recess 76 forms a grip portion that allows the left side cover 31 to be gripped.

[0034] The fifth plate portion 75 is inclined at 45 degrees relative to the third plate portion 73, and therefore is inclined at 45 degrees relative to the side plate portion 65 of the cover body 60 when the base member 61 is attached to the front plate portion 66 or the rear plate portion 67. A pair of bolt through holes 77 through which the fastening bolts 34 can be inserted is formed in the fifth plate portion 75. The dimensions of the fifth plate portion 75 are set so that, when the base member 61 is attached to the front plate portion 66 or the rear plate portion 67, at least the outer surface 65A of the side plate portion 65 is invisible when viewed from the left direction, which is perpendicular to the outer surface 65A. As the fifth plate portion 75 is spaced rearward (or forward) from the front plate portion 66 (or the rear plate portion 67) in the front-to-rear direction, the front (or rear) fifth plate portion 75 becomes invisible not only when viewed from the left direction, which is perpendicular to the outer surface 65A, but also when viewed from diagonally forward (or diagonally rearward) from the left direction. The angle of inclination in the left-right direction that makes the fifth plate portion 75 invisible is proportional to the distance between the fifth plate portion 75 and the front plate portion 66 (or the rear plate portion 67) in the front-rear direction. The diameter of the bolt through-hole 77 is set to a size that allows a margin for the shaft of the fastening bolt 34 so that dimensional errors in each part of the cover mounting structure can be absorbed.

[0035] Plate pieces 78 are formed on the pair of second plate portions 72, and extend in a different direction from the pair of second plate portions 72. The plate pieces 78 are plate pieces that are substantially parallel to the first plate portion 71, and have through holes 79 through which bolts 80 that fix the base member 61 to the front plate portion 66 or the rear plate portion 67 can be inserted.

[0036] When the base member 61 is fixed to the front plate 66, the first plate 71 faces rearward, and the pair of second plate portions 72 are positioned one above the other. The third plate portion 73 is positioned on the left frame 23 side, and the fourth plate portion 74 faces the side plate portion 65 of the cover body 60. The recess 76 faces forward. The fifth plate portion 75 slopes away from the fourth plate portion 74 as it extends from the third plate portion 73 toward the tip. The fifth plate portion 75 can abut against the mounting seat surface 42 of the plate member 35 provided at the front of the left frame 23. A seat portion 81 is provided near the cutout 68 on the inner surface of the front plate 66, allowing the base member 61 to be mounted.

[0037] When the base member 61 is fixed to the rear plate 67, the first plate 71 faces forward, and the pair of second plate portions 72 are positioned one above the other. The third plate portion 73 is positioned on the left frame 23 side, and the fourth plate portion 74 faces the side plate portion 65 of the cover main body 60. The recess 76 faces rearward. The fifth plate portion 75 slopes away from the fourth plate portion 74 as it extends from the third plate portion 73 toward its tip. The fifth plate portion 75 can abut against the mounting seat surface 42 of the plate member 35 provided at the rear of the left frame 23. A seat portion 82 is provided near the cutout 69 on the inner surface of the rear plate 67, allowing the base member 61 to be mounted. The surface of the fifth plate portion 75 of the base member 61 fixed to the rear plate 67 is substantially perpendicular to the surface of the fifth plate portion 75 of the base member 61 fixed to the front plate portion 66.

[0038] An inner surface 65B of the side plate 65 of the cover main body 60 is provided with an elastic member 62 serving as a latching portion and a metal bracket 63 supporting the elastic member 62 (see FIG. 6 ). The elastic member 62 is formed in a generally cylindrical shape from an elastically deformable rubber material. As shown in FIG. 9( a), a through hole 83 is formed in the center of the elastic member 62, allowing the shaft member 50 provided on the left frame 23 to be inserted therethrough. The through hole 83 has a same-diameter hole portion 84 whose diameter is set slightly smaller than the shaft diameter of the shaft member 50, and an expanded-diameter hole portion 85 whose diameter expands toward the opening on the insertion side of the through hole 83. The expanded-diameter hole portion 85 facilitates insertion of the shaft member 50 and also easily absorbs any dimensional error that may occur between the axial center of the shaft member 50 and the axial center of the through hole 83. Since the same diameter hole portion 84 is set to be slightly smaller than the shaft diameter of the shaft member 50 , the shaft member 50 inserted into the through hole 83 is less likely to come out of the through hole 83 .

[0039] As shown in Figure 9(b), an annular groove 86 is formed in the circumferential direction on the outer peripheral surface of the elastic member 62. Meanwhile, the bracket 88 is a member formed in a substantially U-shape, and an insertion hole 87 is formed in the bracket 88, allowing the elastic member 62 to be inserted. The elastic member 62 inserted into the insertion hole 87 is positioned relative to the bracket 88 by the annular groove 86, and is supported by the bracket 88 to prevent it from slipping out. The elastic member 62 and the bracket 88 are provided in pairs at the upper and lower parts of the inner surface 65B of the side plate portion 65, corresponding to the position of the shaft member 50 (see Figure 6).

[0040] Next, the work of attaching the left side cover 31 to the vehicle body 12 using the cover attachment structure of this embodiment will be described. First, the worker attaching the left side cover 31 needs to lift the left side cover 31. For example, by placing the left hand in the recess 76 of the front base member 61 and the right hand in the recess 76 of the rear base member 61, the worker can stably lift the left side cover 31 with both hands.

[0041] Next, the worker moves the lifted left side cover 31 from left to right, bringing it closer to the left frame 23. In other words, the installation direction of the left side cover 31 is from left to right. Furthermore, the worker moves the left side cover 31 and inserts the shaft member 50 of the left frame 23 into the through-hole 83 of the elastic member 62 of the left side cover 31. When the shaft member 50 is inserted into the through-hole 83, the elastic member 62 holds the shaft member 50 by elastic deformation. When all of the shaft members 50 are inserted into the through-holes 83 of all of the elastic members 62, the accuracy of positioning of the upper (or lower) part of the left side cover 31 relative to the upper (or lower) part of the left frame 23 is improved. Furthermore, when the shaft members 50 are inserted into the through-holes 83 of the elastic members 62, dimensional errors such as manufacturing errors of the left side cover 31 and errors in the installation position of the shaft members 50 can be absorbed by the elastic deformation of the elastic member 62. In particular, since the through-hole 83 is provided with the enlarged diameter hole portion 85, dimensional errors are more easily absorbed.

[0042] When all of the shaft members 50 are inserted into the through-holes 83 of all of the elastic members 62, the left side cover 31 is locked to the shaft members 50, allowing the worker to release the left side cover 31. When the left side cover 31 is locked to the shaft members 50, the fifth plate portion 75 of the base member 61 approaches or abuts against the mounting seat surface 42 of the plate member 35 of the left frame 23. Next, the worker inserts the fastening bolt 34 into the bolt through-hole 77 of the fifth plate portion 75 and screws the fastening bolt 34 into the bolt through-hole 43 of the plate member 35. The bolt through-hole 77 of the fifth plate portion 75 has a hole diameter larger than the outer diameter of the shank of the fastening bolt 34. Therefore, dimensional errors in the cover mounting structure can be absorbed within the range in which the shank of the fastening bolt 34 can move within the bolt through-hole 77. When the base member 61 is attached to the plate member 35, the fifth plate portion 75 overlaps a portion of the fixing bolt 44.

[0043] 10, the work of attaching the left side cover 31 to the left frame 23 is completed by attaching the fifth plate portions 75 of all of the base members 61 to the plate member 35. When attaching the fifth plate portions 75 to the plate member 35 with the fastening bolts 34, the left side cover 31 is locked by the shaft member 50, so the worker does not need to support the left side cover 31 with his or her hands, and can perform the work of the fastening bolts 34 using a power tool or the like that requires the use of both hands.

[0044] When the left side cover 31 is attached to the left frame 23, the fastening bolts 34 and the base member 61 are concealed by the cover main body 60 and cannot be seen when the forklift 10 is viewed from the left direction, which is perpendicular to the left side surface. When viewed from a diagonally forward (or diagonally rearward) angle inclined relative to the left-right direction, the fastening bolts 34 and the base member 61 may be concealed by the cover main body 60 and cannot be seen depending on the angle of inclination relative to the left-right direction. Incidentally, the further rearward (or forward) the fastening bolts 34 and the base member 61 are positioned from the front plate member 66 (or the rear plate member 67), which is the end of the cover main body 60, in the fore-and-aft direction, the greater the angle of inclination relative to the left-and-right direction at which the front (or rear) fastening bolts 34 and the base member 61 are not visible. To remove the left side cover 31 from the left frame 23, all fastening bolts 34 are removed first, and then the left side cover 31 is moved from right to left.

[0045] The cover mounting structure according to this embodiment has the following advantages. (1) Because the threading direction of the fastening bolt 34 in the bolt through-hole 43 of the plate member 35 of the left frame 23 is inclined with respect to the plate surface of the cover main body 60, dimensional errors during installation of the left side cover 31 can be easily absorbed, and deformation of the left side cover 31 can be easily suppressed. Furthermore, the cover installation portion is located in a position where the fastening bolt 34 is concealed by the cover main body 60 when viewed from the outer surface 65A of the cover main body 60. Therefore, the fastened fastening bolt 34 does not detract from the design of the left side cover 31, and the design of the left side cover 31 can be improved.

[0046] (2) The left frame 23 has a locking portion that locks the left side cover 31 at a position facing the cover main body 60, and the inner surface 65B of the cover main body 60 has a locked portion that locks with the locking portion. The locked portion is provided with an elastic member 62 that can be elastically deformed so that the elastic member 62 is interposed between the locking portion and the locked portion. Therefore, by locking the locked portion of the cover main body 60 to the locking portion of the left frame 23, it becomes easier to position the left side cover 31 relative to the left frame 23, and dimensional errors can be absorbed by the elastic deformation of the elastic member 62.

[0047] (3) The locking portion includes a shaft member 50 that protrudes toward the cover body 60, and the locked portion includes an elastic member 62 that allows the shaft member 50 to be inserted therethrough, and a bracket 63 that is provided on the inner surface 65B of the cover body 60 and supports the elastic member 62. When attaching the left side cover 31 to the left frame 23, the shaft member 50 provided on the locking portion of the left frame 23 is inserted into the elastic member 62 provided on the locked portion of the cover. This increases the accuracy of positioning the left side cover 31 relative to the left frame 23 and makes it easier to lock the left side cover 31 to the left frame 23.

[0048] (4) The left side cover 31 is a side cover that is attached to the left frame 23, which is a side surface of the vehicle body 12. Therefore, the left side cover 31 can be locked to the left frame 23 before the left side cover 31 is attached. When attaching the left side cover 31 to the left frame 23 using the fastening bolts 34, the worker can tighten the fastening bolts 34 without supporting the left side cover 31 with their hands, improving the ease of attaching the left side cover 31.

[0049] (5) The cover attachment portion is provided on the cover main body 60 and includes a base member 61 having a bolt through-hole 77 at a position corresponding to the female thread portion 45. The base member 61 forms a recess 76 extending from the end of the cover main body 60 toward the inner surface 65B, and the recess 76 forms a gripping portion that allows the left side cover 31 to be gripped. Therefore, the base member 61 forms a gripping portion that allows the left side cover 31 to be gripped, and an operator can easily carry the left side cover 31 by inserting their hand into the recess 76 that forms the gripping portion. Furthermore, because the base member 61 is provided at positions that are approximately central to the front plate portion 66 and the rear plate portion 67 of the left side cover 31 in the up-down direction, the left side cover 31 can be easily carried in an upright position.

[0050] (6) The plate member 35 has an internal thread portion 45 and is fixed by a fixing bolt 44 that fixes it to the left frame 23. The base member 61 is attached to the plate member 35 so as to overlap a portion of the fixing bolt 44. Therefore, the fixing bolt 44 does not come out of the plate member 35, and the plate member 35 can be prevented from falling off the left frame 23.

[0051] (7) A through hole 83 is formed in the center of the elastic member 62, allowing the shaft member 50 provided on the left frame 23 to be inserted therethrough. The through hole 83 has a same-diameter hole portion 84 whose diameter is set slightly smaller than the shaft diameter of the shaft member 50, and an expanded-diameter hole portion 85 whose diameter expands toward the opening on the insertion side of the through hole 83. The expanded-diameter hole portion 85 not only makes it easier to insert the shaft member 50, but also makes it easier to absorb any dimensional error that occurs between the axis of the shaft member 50 and the axis of the through hole 83. Because the same-diameter hole portion 84 is set slightly smaller than the shaft diameter of the shaft member 50, the shaft member 50 inserted into the through hole 83 is less likely to come out of the through hole 83.

[0052] (8) The diameter of the bolt through-hole 77 formed in the fifth plate portion 75 of the base member 61 is large enough to accommodate the shaft of the fastening bolt 34. This, combined with the fact that the screwing direction of the fastening bolt 34 is inclined relative to the plate surface of the cover main body 60, makes it possible to absorb dimensional errors in the various parts of the cover mounting structure when mounting the left side cover 31 to the left frame 23.

[0053] (9) The base member 61 having the fifth plate portion 75 is provided inside the cover body 60 so as not to protrude forward (rear) from the notch 68 (69) of the front plate portion 66 (rear plate portion 67) of the left side cover 31. Therefore, not only the fastening bolt 34 but also the base member 61 do not impair the design of the left side cover 31.

[0054] (Variation) In the modified example shown in FIG. 11 , a plurality of slits 90 are formed in the base member 61. The plurality of slits 90 are formed in the first plate portion 71 and the fourth plate portion 74 so as to extend along the longitudinal direction of the first plate portion 71 and the fourth plate portion 74. The slits 90 may be formed in each of the base members 61 provided on the front plate portion 66 and the rear plate portion 67, or may be formed in either of the base members 61. When the left side cover 31 is attached to the left frame 23, air is easily drawn into the left side cover 31 through the slits 90. Therefore, even if the temperature of the equipment housed inside the left side cover 31 becomes high, the equipment can be cooled by the air drawn in through the slits 90. When the slits 90 are formed in each of the base members 61 provided on the front plate portion 66 and the rear plate portion 67, the cooling effect is more pronounced.

[0055] The present invention is not limited to the above-described embodiment (including modified examples), and various modifications are possible within the scope of the spirit of the invention. For example, the following modifications may be made.

[0056] In the above embodiment (including the modified example), the cover mounting structure has the locking portion and the locked portion, but this is not limiting. The cover mounting structure may not have the locking portion and the locked portion. In the above embodiment (including the modified examples), an example has been described in which a shaft body is used as the locking portion and an elastic member is used as the locked portion, but this is not limiting. For example, an elastic member may be used as the locking portion and a shaft body as the locked portion, and the locking portion and the locked portion may be formed of a member other than the shaft portion and the elastic member. In the above embodiment (including the modified example), the mounting structure for the left side cover attached to the left frame as a cover has been described as an example, but this is not limited thereto. The position of the cover in the cover mounting structure is not particularly limited, and for example, in addition to the right side surface of the vehicle body, the front and rear surfaces may be the side surfaces of the vehicle body, or the top or bottom surface of the vehicle body. There are also no particular restrictions on the shape or size of the cover, and it is sufficient that the fastening bolts are concealed by the cover main body and are not visible when the cover attached to the vehicle body is viewed from the mounting direction of the cover. In the above embodiment (including the modified examples), a base member having a recess is described as an example of the cover mounting portion, but this is not limiting. The cover mounting portion may be, for example, a base member without a recess, as long as the screwing direction of the fastening bolt is inclined with respect to the plate surface of the cover body and the fastening bolt is concealed when viewed from the outer surface of the cover body. In the above embodiment (including the modified example), a pair of vehicle body mounting portions and a pair of pedestal members are provided in the front-rear direction, but this is not limited thereto. For example, a pair of vehicle body mounting portions and a pair of pedestal members may be provided in the up-down direction, and the direction in which the pair of vehicle body mounting portions and a pair of pedestal members are provided is not particularly limited. In the above-described embodiment (including the modified example), the female thread of the vehicle body mounting portion is formed so that the screwing direction of the fastening bolt is inclined at 45 degrees relative to the plate surface of the cover body, but this is not limited to this. The inclination of the screwing direction of the fastening bolt relative to the cover body may be in the range of 30 to 60 degrees, and is preferably in the range of 40 to 50 degrees, which can reliably achieve both improved workability in the cover installation work and improved design. In the above embodiment, a reach forklift is used as an example of an industrial vehicle, but the industrial vehicle is not limited to this. The industrial vehicle may be a counterweight forklift, or may be a towing vehicle, a towing tractor, or an automated guided vehicle other than a forklift. [Explanation of symbols]

[0057] 10. Forklift 11 Body 12 Body 13 Reach Leg 14 Driven wheels 15 Cargo handling equipment 18 Fork 19 rear wheel 22 Right Frame 23 Left Frame 27 Steering wheel 28 Direction lever 29 Loading lever 30 Controller housing 31 Left side cover 34 Fastening bolt 35 Plate member (vehicle body mounting part / mounting member) 42 Mounting surface 43 Bolt hole 44 Fixing bolt 45 female thread 46 Upper bracket 49 Support member 50 Shaft member (locking part) 60 Cover body 61 Base member (cover mounting part) 62 Elastic member (retained portion) 63 Bracket 65 Side plate part 65A outer surface 65B Inner surface 66 Front plate part 67 Rear plate part 75 5th plate part 76 Recess 77 Bolt holes 90 Slit (variation)

Claims

1. The car body and a cover attached to the vehicle body; a fastening bolt for attaching the cover to the vehicle body, the vehicle body includes a vehicle body mounting portion having a female thread portion into which the fastening bolt can be screwed, The cover is A plate-shaped cover body, a cover mounting portion provided on an inner surface of the cover body and attached to the vehicle body mounting portion via the fastening bolt; The female thread portion is formed so that the screwing direction of the fastening bolt is inclined with respect to the plate surface of the cover body, 10. A cover mounting structure for an industrial vehicle, wherein the cover mounting portion is located at a position where the fastening bolt is concealed by the cover body when viewed from the outer surface of the cover body.

2. The vehicle body has a locking portion that locks the cover at a position facing the cover main body, an inner surface of the cover body having a latched portion that is latched by the latching portion; 2. The cover mounting structure for an industrial vehicle according to claim 1, wherein the elastic member is provided on at least one of the engaging portion and the engaged portion so that an elastically deformable elastic member is interposed between the engaging portion and the engaged portion.

3. The locking portion includes a shaft member that protrudes toward the cover body, The locked portion is the elastic member through which the shaft member can be inserted; 3. The cover mounting structure for an industrial vehicle according to claim 2, further comprising: a bracket provided on an inner surface of the cover body, the bracket supporting the elastic member.

4. 4. The cover mounting structure for an industrial vehicle according to claim 2, wherein the cover is a side cover mounted on a side of the vehicle body.

5. the cover mounting portion includes a base member that is provided on the cover body and has a bolt through-hole at a position corresponding to the female thread portion; 3. The cover mounting structure for an industrial vehicle according to claim 1, wherein the base member has a recess formed from an end of the cover body toward the inner surface.

6. The vehicle body mounting portion is a mounting member that includes the female thread portion and is fixed to the vehicle body by a fixing bolt; 3. The cover mounting structure for an industrial vehicle according to claim 1, wherein the cover mounting portion is attached to the vehicle body mounting portion so as to overlap the fixing bolt.

7. 3. The cover mounting structure for an industrial vehicle according to claim 1, wherein a slit communicating the inside and outside of the cover is formed in the cover mounting portion.

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