JP2019094023A - Frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a frame capable of adjusting the positions of bolt holes and easily passing bolts through the bolt holes even if relative deviations occur in the positions of the bolt holes of the frame body and the plate. SOLUTION: The frame of the present invention has a frame main body 11 having a first bolt hole 24 and a first rivet hole 25, and a second bolt hole 26 and a first bolt hole 26 communicating with the first bolt hole 24. A plate 12 having a second rivet hole 27 communicating with the rivet hole 25 and a rivet 13 inserted from the first rivet hole 25 toward the second rivet hole are provided. The second rivet hole 27 has a smaller diameter than the first rivet hole 25, and the rivet 13 has a small diameter portion 13a fitted in the second rivet hole 27 and a diameter larger than the small diameter portion 13a and is the first. Has a large diameter portion 13b having a diameter inserted into the rivet hole 25 of the above and having a gap between the rivet hole 25 and the first rivet hole 25. [Selection diagram] Fig. 4

Description

  The present invention relates to a frame having a plate for mounting a load.

  A frame of this type includes a frame member and a bolt plate attached to the frame member for fixing the frame member to a vehicle stay, and the bolt plate is disposed on the wall of the frame member between the stay and the base plate There is disclosed one having a portion and a bolt shaft portion provided on the base plate portion (see Patent Document 1). In the frame, the base plate portion is temporarily fixed by the fastening member to the wall of the frame member in a state where the bolt shaft portion is passed through the through hole formed in the wall of the frame member.

JP, 2015-221602, A

  However, in the frame described in Patent Document 1, the base plate portion is temporarily fixed by the fastening member to the wall of the frame member in a state where the bolt shaft portion passes through the through hole, so the bolt shaft portion is penetrated in advance There is a problem that the operation is not good. In consideration of workability, it is conceivable that the bolt plate is temporarily fixed to the frame member by the fastening member without passing the bolt shaft portion through the through hole in advance.

  However, when the bolt plate is temporarily fixed to the frame member by the fastening member without passing the bolt shaft portion through the through hole in advance, the positions of the bolt holes of the frame member and the bolt plate may be shifted due to the influence of dimensional tolerances. is assumed. Misalignment of the bolt holes makes it difficult to insert the bolt shanks.

  The present invention has been made to solve such a problem, and even if the frame body and the plate are temporarily fixed by rivets and relative displacement occurs in the positions of the frame body and the bolt holes of the plate, It is an object of the present invention to provide a frame in which positions of bolt holes can be adjusted and bolts can be easily passed through the bolt holes.

  A frame according to the present invention has a first bolt hole and a first rivet hole, and a frame body on which a load is mounted, and a frame body is disposed on the opposite side of the load, A plate having a second bolt hole communicating with the first bolt hole and a second rivet hole communicating with the first rivet hole, and inserting the first rivet hole toward the second rivet hole A rivet connecting the frame body and the plate, the second rivet hole being smaller in diameter than the first rivet hole, and the rivet being fitted in the second rivet hole And a large diameter portion having a diameter larger than that of the small diameter portion and having a gap between the first rivet hole and the first rivet hole. .

  In the frame according to the present invention, the rivet connecting the frame body and the plate has a small diameter portion and a large diameter portion, and the small diameter portion is fitted in the second rivet hole, so the rivet is a second rivet It is fixed to the plate through the rivet holes. On the other hand, since the large diameter portion has a gap in the state of being inserted into the first rivet hole, the rivet can move within the range of the gap of the first rivet hole. This configuration allows the plate to move relative to the frame body within the clearance of the first rivet hole.

  As a result, even if the position of the first bolt hole of the frame body and the position of the second bolt hole of the plate are shifted relative to each other, the first bolt hole and the second bolt hole can be moved by moving the plate relative to the frame body. The centers of the bolt holes can be brought close to each other, and the bolts can be inserted into the first bolt hole and the second bolt hole.

  According to the present invention, the frame body and the plate can be connected in advance, and the position of the bolt hole can be adjusted even if relative displacement occurs in the position of the frame body and the bolt hole of the plate. It is possible to provide a frame that can be easily passed through.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram of the motor vehicle to which the flame | frame which concerns on embodiment of this invention is applied. The disassembled perspective view of the flame | frame which concerns on embodiment of this invention. It is a figure of the flame | frame which concerns on embodiment of this invention, FIG. 3 (a) shows the top view of a flame | frame, FIG.3 (b) shows the side view of a flame | frame. Fig. 4 (a) shows a partial cross-sectional view of a frame main body, and Fig. 4 (b) shows a cross-sectional view of a plate according to an embodiment of the present invention; ) Shows a side view of the rivet. FIG. 5 (a) is a view showing a method of attaching the rivets of the frame according to the embodiment of the present invention to the frame body and the plate, and FIG. 5 (a) shows a state before inserting the rivets into the frame body and the plate; b) shows the rivet inserted into the frame body and the plate, and FIG. 5 (c) shows the rivet connected to the plate body. FIG. 6A is a cross-sectional view of a frame body and a plate connected by rivets of a frame according to an embodiment of the present invention and a bolt, and FIG. 6A shows a state in which the plate is not moved; Shows a state in which the plate has moved to the right toward the paper surface, and FIG. 6 (c) shows a state in which the plate has moved to the left toward the paper surface.

  A frame 10 according to an embodiment to which a frame according to the present invention is applied will be described with reference to the drawings.

  As shown in FIG. 1, the frame 10 is supported by a suspension member 2 provided on the front wheel FW side of the automobile 1 and has a structure in which the fuel cell stack 3 is mounted. The automobile 1 is constituted by a so-called fuel cell vehicle on which a fuel cell comprising the fuel cell stack 3 is mounted. Further, the automobile 1 includes a fuel gas supply device 4 disposed in front of the rear wheel RW, a fuel pipe 5 for allowing fuel to flow between the fuel cell stack 3 and the fuel gas supply device 4, and the fuel cell stack 3. It comprises a connected DC-DC converter 6 and an inverter not shown.

  As shown in FIG. 2, the suspension member 2 has a front cross member 2a, a rear cross member 2b, a pair of left and right side members 2c, a pair of left and right front mounts 2d, and a pair of left and right rear mounts 2e. doing. A substantially rectangular framework is formed by the front cross member 2a, the back cross member 2b, and the side members 2c.

  Each front mount 2d is fastened by a bolt (not shown) between the front cross member 2a and each side member 2c. Each rear mount 2e is provided at the rear of each side member 2c, has a screw hole 2f, and is configured such that the frame 10 is fastened with a bolt (not shown) in the vertical direction. Note that the upper, front and right indicated by arrows in FIG. 2 indicate directions as viewed from the driver's seat of the automobile 1.

  The fuel cell stack 3 is formed of a stack of not-shown fuel cells stacked in a plurality, and the stack of the fuel cells is accommodated in a stack case 3a. The stack case 3a has a front mounting portion 3c having a mounting hole 3b, a rear mounting portion 3d having a mounting hole 3b, a front mounting portion 3e having a mounting hole 3b, and a rear mounting portion 3f having a mounting hole 3b. have.

  The front mounting portion 3c is formed to project horizontally from the bottom on the front side of the left side, the rear mounting portion 3d is formed to project horizontally from the bottom on the rear side of the left side, and the front mounting 3e is formed on the right side. The rear mounting portion 3f is formed to project horizontally from the bottom on the rear side of the right side surface.

The fuel cell includes hydrogen (H) as a fuel gas supplied from the fuel gas supply device 4 via the fuel pipe 5 and air (O ₂ ) as an oxidant gas supplied from an air compressor (not shown). It is configured to generate electricity. The fuel cell stack 3 is connected to the DC-DC converter 6 and configured to supply power to the DC-DC converter 6.

  The DC-DC converter 6 is mounted on the top of the fuel cell stack 3 and has a coil, a diode, a smoothing capacitor, and a switch (not shown). The DC-DC converter 6 is configured by a step-up converter that boosts the voltage of the high voltage line connected to the DC-DC converter 6 and outputs the voltage to a high voltage line connected to an inverter (not shown). The inverter is configured to convert direct current power into power required by the load device, for example, three-phase alternating current power, and supply the power to the load device. The load device includes, for example, a motor for driving the automobile 1 and an air compressor.

  The frame 10 includes a frame body 11 on which the fuel cell stack 3 is mounted, a plate 12 disposed on the opposite side of the fuel cell stack 3 with the frame body 11 interposed therebetween, and a rivet 13 for connecting the frame body 11 and the plate 12 Have. The frame 11 is provided with a first bolt hole 24 and a first rivet hole 25, and the plate 12 is provided with a second bolt hole 26 and a first rivet hole communicating with the first bolt hole 24. A second rivet hole 27 communicating with 25 is provided. The rivets 13 are inserted from the first rivet holes 25 toward the second rivet holes 27 to connect the frame body 11 and the plate 12.

  In the present embodiment, as shown in FIG. 2, FIG. 3 (a) and FIG. 3 (b), the frame 10 is composed of the frame body 11, four plates 12, four rivets 13, and four. A spacer 14, four welding nuts 15, and four bolts 16 are provided. The frame body 11, the four plates 12 and the four rivets 13 of the present embodiment respectively constitute a frame body, a plate and a rivet of the frame according to the present invention.

  The frame main body 11 has a front mount mounting portion 21, a mounting portion 22 integrally formed with the front mount mounting portion 21, and a rear mount mounting portion 23 integrally formed with the mounting portion 22. . The front mount mounting portion 21 is formed to project upward at the front end of the frame main body 11, and is configured to be located between the left and right front mounts 2d. Bolt holes 21a are respectively formed at both end portions of the front mount mounting portion 21 in the left-right direction, and both ends of the front mount mounting portion 21 are fastened to the front mount 2d by the bolts 21b shown in FIG. It is configured.

  The mounting portion 22 is formed substantially flat so as to mount the fuel cell stack 3 at the top, as shown in FIGS. 2 and 4A, and the front mounting portion 3c and the rear side of the left side surface of the fuel cell stack 3 are mounted. The first bolt hole 24 having the same center as the mounting hole 3b is provided at a position corresponding to the mounting portion 3d and the mounting holes 3b provided in the front side mounting portion 3e and the rear side mounting portion 3f on the right side. ing. Each first bolt hole 24 is formed through the frame body 11 with a diameter D1 at a position having a thickness t1 of the frame body 11 so that the bolt 16 is inserted, as shown in FIG. 4A. ing.

  Further, as shown in FIG. 2 and FIG. 4A, the mounting portion 22 has the rivets 13 inserted at positions separated by a distance L1 from the center of each first bolt hole 24 to the rear or front. One rivet hole 25 is formed through the frame body 11 with a diameter D2.

  As shown in FIGS. 2, 3A, and 3B, the rear mount attaching portion 23 is formed with a left attaching portion 23a which is formed by projecting horizontally from the left end at the rear of the mounting portion 22; It has the right side attaching part 23b protruded and formed in the back of the mounting part 22 in the horizontal direction from the right side end. Bolt holes 23c are respectively formed in the left side mounting portion 23a and the right side mounting portion 23b so that bolts (not shown) may be inserted.

  As shown in FIGS. 2 and 4B, each plate 12 has a thickness t2 and is formed flat in a rectangular shape elongated in the front-rear direction and has a second bolt hole 26. The second bolt hole 26 is provided at a position concentric with the first bolt hole 24 so as to be oppositely in communication with the first bolt hole 24. The second bolt holes 26 are formed through the plate 12 with a diameter D3 so that the bolts 16 can be inserted, like the first bolt holes 24, as shown in FIG. 4 (b). Each plate 12 is formed with a second rivet hole 27 through the plate 12 with a diameter D4 so that the rivet 13 is inserted at a position separated by a distance L1 from the center of the second bolt hole 26 There is. The second rivet hole 27 is provided at a position concentric with the first rivet hole 25 so as to communicate with the first rivet hole 25.

  As shown in FIG. 4C, the rivet 13 has a small diameter portion 13a on the tip end side, and has a large diameter portion 13b on the head side via a step surface. The small diameter portion 13a has a cylindrical shape with a diameter D5 and has a length L2, and the large diameter portion 13b has a cylindrical shape with a diameter D6 larger than the diameter D5 and has a length L3. The diameter D5 of the small diameter portion 13a is formed to have a diameter slightly smaller than the diameter D4 of the second rivet hole 27 so as to firmly fit into the second rivet hole 27 of the plate 12, and the length L2 is It is formed to have a dimension longer than the thickness t2 of 12.

  The diameter D6 of the large diameter portion 13b is smaller than the diameter D2 of the first rivet hole 25 formed in the mounting portion 22 constituting the frame main body 11, and the large diameter portion 13b is the first rivet hole 25. A gap is formed between the outer peripheral surface of the large diameter portion 13 b and the inner peripheral surface of the first rivet hole 25 when inserted into the housing. The gap allows the plate 12 to move relative to the frame body 11 in the in-plane direction of the mounting portion 22 within a predetermined range. The length L 3 of the large diameter portion 13 b is formed to be longer than the thickness t 1 of the mounting portion 22. Further, the diameter D7 of the head 13c is larger than the diameter D2 of the first rivet hole 25 formed in the mounting portion 22, and the rivet 13 is configured not to drop out of the first rivet hole 25. There is.

  Then, the attachment method of the rivet 13 is demonstrated. First, as shown in FIG. 5A, the rivet 13 is inserted from the first rivet hole 25 formed in the mounting portion 22 toward the second rivet hole 27 of the plate 12. Then, as shown in FIG. 5 (b), with the tip of the large diameter portion 13b in contact with the plate 12, the caulking device K causes the head 13c of the rivet 13 and the small diameter portion 13a to load as shown by arrows. And compress the rivet 13.

  As a result, as shown in FIG. 5C, the small diameter portion 13a of the rivet 13 is deformed and fixed to the plate 12 by caulking. That is, the frame body 11 and the plate 12 are connected by the rivets 13. As a result, the rivet 13 does not fall out of the first rivet hole 25, and the rivet 13 and the plate 12 are in the range of the clearance between the outer peripheral surface of the large diameter portion 13 b and the inner peripheral surface of the first rivet hole 25. Can move, for example, in the in-plane direction of the mounting portion 22 indicated by the arrow h.

  Each spacer 14 is formed in a cylindrical shape with a through hole into which a bolt 16 is inserted at the center, as shown in FIGS. 2 and 3B, and the front attachment portions 3c and 3e and the fuel cell stack 3 are formed. It is configured to be interposed between the rear side attachment portions 3 d and 3 f and the mounting portion 22. With this configuration, a gap corresponding to the height of the spacer 14 is formed between the bottom surface of the fuel cell stack 3 and the top surface of the mounting portion 22.

  Each welding nut 15 is formed with a screw hole so as to be screwed with the bolt 16 and, as shown in FIG. 4 (b), each plate is co-centered with the second bolt hole 26 of each plate 12. It is configured to be welded to twelve.

  As shown in FIG. 4, the diameter D1 to D7, the distance L1, the lengths L2 and L3, and the thicknesses t1 and t2 of the frame 10 according to the present embodiment set the structure, size, shape, etc. of the frame 10. It is appropriately selected based on data such as specifications and experimental values.

  The effects of the frame 10 according to the present embodiment configured as described above will be described.

  In the frame 10 according to the present embodiment, the rivet 13 connecting the frame body 11 and the plate 12 has a small diameter portion 13a and a large diameter portion 13b, and as shown in FIG. 5 (c), the small diameter portion 13a Is fitted into the second rivet hole 27 and crimped, the rivet 13 is fixed to the plate 12 through the second rivet hole 27. On the other hand, since the large diameter portion 13b is inserted into the first rivet hole 25 with a gap, the rivet 13 is shown in FIG. 5C within the range of the gap of the first rivet hole 25. It can be moved radially in the horizontal direction including the direction of the arrow h. The rivets 13 are single and fixed to the plate 12 at one place so that they can be easily moved.

  With this configuration, the plate 12 and the rivet 13 can move in the direction of the arrow shown in FIG. 6B from the position shown in FIG. 6A and move in the direction of the arrow shown in FIG. be able to. Therefore, the plate 12 and the rivet 13 can be moved relative to the frame body 11 in the in-plane direction of the mounting portion 22 within the range of the clearance of the first rivet hole 25.

  As a result, even if the positions of the first bolt holes 24 of the frame body 11 and the second bolt holes 26 of the plate 12 are relatively shifted, the bolt holes can be obtained by moving the plate 12 with respect to the frame body 11. The position of can be adjusted. Therefore, the centers of the first bolt hole 24 and the second bolt hole 26 can be brought close to each other, and the bolt 16 can be easily passed through the first bolt hole 24 and the second bolt hole 26. can get. That is, even if the plate 12 for reinforcing the plate 12 is provided on the frame 10 according to the present embodiment and the number of parts is increased, the deterioration of the positional accuracy due to the increase in the number of parts can be eliminated. The effect of being able to be provided in the space of the vehicle on the front wheel FW side of 1 can be obtained.

  In addition, the frame 10 according to the present embodiment is supported by the suspension member 2 provided on the front wheel FW side of the automobile 1 and has the fuel cell stack 3 mounted thereon. May be added to stack 3 and frame 10. As shown in FIG. 3 (b), when an external force F1 shown by an arrow is applied to the automobile 1, a reaction force F2 shown by an arrow caused by inertia with respect to the fuel cell stack 3 and the frame 10 has the same magnitude as the external force F1. It acts in the opposite direction to the external force F1.

  In the frame 10 according to the present embodiment, a frame body 11 on which the fuel cell stack 3 is mounted is reinforced by four plates 12. As a result, even if the reaction force F2 acts on the fuel cell stack 3 and the frame 10, breakage of the front attachment parts 3c and 3e and the rear attachment parts 3d and 3f for attaching the fuel cell stack 3 to the frame body 11 is prevented. The effect of being

  As mentioned above, although the embodiment of the present invention was explained in full detail, the present invention is not limited to the above-mentioned embodiment, and various designs are possible in the range which does not deviate from the spirit of the present invention described in the claim. It is possible to make changes.

1 ... automobile, 2,... The suspension members, 2a ··· front cross member, 2b ··· rear cross members, 2c ··· side members, 2d ··· front mount, 2e ··· rear mount , 2f: screw hole, 3: fuel cell stack, 3a: stack case, 3b: mounting hole, 3c, 3e: front mounting portion, 3d, 3f: rear mounting portion 4, fuel gas supply device 5, fuel piping 6, DC-DC converter 10, frame 11, frame body 12, plate 13, rivet , 13a: small diameter portion, 13b: large diameter portion, 13c: head, 14: spacer, 15: welding nut, 16: bolt, 21: front mount attachment portion , 21a, 23c ... bolt 21b: bolt 22: mounting portion 23: rear mounting portion 23a: left mounting portion 23b: right mounting portion 24: first bolt hole 25 ... 1st rivet hole, 26 ... 2nd bolt hole, 27 ... 2nd rivet hole

Claims (1)

A frame body having a first bolt hole and a first rivet hole and on which a load is mounted;
A plate disposed on the opposite side of the load with the frame main body and having a second bolt hole communicating with the first bolt hole and a second rivet hole communicating with the first rivet hole; ,
A rivet inserted from the first rivet hole toward the second rivet hole and connecting the frame body and the plate;
The second rivet hole is smaller in diameter than the first rivet hole;
The rivet is inserted between the small diameter portion fitted in the second rivet hole and the first rivet hole with a diameter larger than the small diameter portion, and a gap is formed between the rivet hole and the first rivet hole. And a large diameter portion having a diameter.

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