Vehicle framework structure

Abstract

To absorb an excess when a skeleton component attached to a frame exceeds a specified dimension in particular.SOLUTION: The front module side 50A and the rear module side 50B, which are frame components, are assembled to the frame 20. The frame 20 includes a pair of frame side members 21A, 21B, a pair of cross members 41A, 41B, and joint block 70A, 70B. The joint blocks 70A, 70B connect the frame side members 21A, 21B and the cross members 41A, 41B. The joint blocks 70A, 70B are provided with cross arms 73A, 73B. The cross arms 73A, 73B are inserted into the openings 48A, 48B of the cross members 41A, 41B. Further, the cross arms 73A, 73B are provided with bonding surfaces 75A, 75B along the vehicle-width direction.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] Disclosed herein is a vehicle frame structure. [Background technology]

[0002] Patent Documents 1 and 2 disclose a polygonal frame that is disposed in the center of the front and rear of the vehicle and supports a battery pack.

[0003] Patent Documents 1 and 2 disclose a frame that is rectangular in plan view. That is, the frame has a pair of skeletal members aligned in the vehicle width direction. Hereinafter, these skeletal members will be referred to as side members as appropriate. The frame also has a pair of skeletal members aligned in the vehicle front-rear direction. Hereinafter, these skeletal members will be referred to as cross members as appropriate. By connecting the ends of each skeletal member together, a frame that is rectangular in plan view is assembled.

[0004] In Patent Documents 1 and 2, skeletal members are joined together via joining members. The skeletal members are square pipes. The joining members are L-shaped. The joining members are inserted into end openings of the skeletal members. In Patent Documents 1 and 2, the skeletal members are joined to the joining members by mechanical joining. That is, fastening holes are drilled in the wall surfaces of the skeletal members and in the joining members. The fastening holes of both are then aligned. A bolt is then screwed into the aligned fastening holes. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 2023-131343 [Patent Document 2] Japanese Patent Application Publication No. 2024-6628 Summary of the Invention [Problem to be solved by the invention]

[0006] For example, a large structural component may be attached to a pair of side members. If there is variation in the dimensions of the structural component in the vehicle width direction, it may be difficult to attach the structural component to the pair of side members. For example, the structural component may have a pair of contact surfaces with the side members. In this case, if the distance between the contact surfaces exceeds the separation distance between the pair of side members, it becomes difficult to attach the structural component to the pair of side members.

[0007] Therefore, this specification discloses a vehicle frame structure that can absorb the excess, particularly when a frame component attached to a frame exceeds a specified dimension. [Means for solving the problem]

[0008] This specification discloses a vehicle skeleton structure. The structure includes a frame and a skeleton component. The frame is polygonal. The skeleton component is assembled to the frame. The skeleton component is integrally molded. The frame includes a pair of side members, a pair of cross members, and a joint block. The pair of side members extend in the fore-and-aft direction of the vehicle. The pair of side members have openings at their longitudinal ends. The pair of cross members extend in the vehicle width direction. The pair of cross members also have openings at their longitudinal ends. The joint block connects the side members to the cross member. The skeleton component has a contact surface for each of the pair of side members. The joint block includes a cross arm. The cross arm is inserted into the opening in the cross member. The cross arm has an adhesive surface along the vehicle width direction.

[0009] According to the above configuration, the adhesive surface extending in the vehicle width direction absorbs variations between the contact surfaces of the frame components.

[0010] In the above-described configuration, the wall surrounding the opening of the cross member may include a covered surface and an exposed surface. The covered surface is covered by the frame component. An adhesive injection hole is drilled in the exposed surface.

[0011] According to the above configuration, after the frame in a provisionally assembled state before the adhesive is injected is attached to the framework component, the cross member and the joint block can be adhesively fixed.

[0012] In the above-described configuration, the adhesive surface of the cross arm may be provided over the entire periphery of the cross arm, in which case the injection groove is formed in the adhesive surface over the entire periphery.

[0013] According to the above configuration, the adhesive can be spread over the entire periphery of the adhesive surface by using the injection groove.

[0014] In the above configuration, the joint block may include a side arm. The side arm is inserted into an opening in the side member. The cross arm and the side arm have flat surfaces formed on their bottoms. The flat surfaces of the cross arm and the side arm are formed on the same plane.

[0015] According to the above configuration, the bottom surfaces of the side arms and the cross arms can be used as reference surfaces (alignment surfaces) for the side members and the cross members.

[0016] In the above configuration, the cross arm may include an extension portion. The extension portion extends from the adhesive surface. A protruding piece is formed on the underside of the extension portion. An insertion hole is drilled in the bottom wall of the walls surrounding the opening of the cross member. The protruding piece can be inserted into the insertion hole.

[0017] According to the above configuration, the joint block in the temporarily assembled state is prevented from falling off from the cross member. [Effects of the Invention]

[0018] According to the vehicle frame structure disclosed in this specification, even when the frame parts attached to the frame exceed the specified dimensions, the excess can be absorbed. [Brief explanation of the drawings]

[0019] [Figure 1]1 is a perspective view illustrating a vehicle frame structure according to an embodiment of the present invention; [Figure 2] FIG. 2 is an exploded perspective view of the vehicle frame structure. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] 4 is a cross-sectional view taken along the line AA in FIG. 3. [Figure 6] FIG. 4 is a cross-sectional view taken along line BB in FIG. 3, showing a temporary assembled state. [Figure 7] FIG. 2 is a diagram illustrating a vehicle frame structure in a provisionally assembled state. [Figure 8] 4 is a cross-sectional view taken along the line BB in FIG. 3, illustrating the assembly process of the vehicle frame structure. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0020] 1 to 8 show an example of a vehicle underside structure according to this embodiment. In FIGS. 1 to 8, the front-to-rear direction of the vehicle is indicated by the FR axis. The vehicle width direction is indicated by the RW axis. The vertical direction is indicated by the UP axis. The FR axis has the forward direction as its positive direction. The RW axis has the rightward direction as its positive direction. The UP axis has the height direction as its positive direction.

[0021] 1. Overall structure Fig. 1 shows a perspective view of a vehicle frame structure. Fig. 2 shows an exploded perspective view of the vehicle frame structure. The vehicle frame structure according to this embodiment is mounted on an electric vehicle (BEV). The vehicle frame structure according to this embodiment includes a frame 20, a front module 50A, and a rear module 50B.

[0022] The frame 20, the front module 50A, and the rear module 50B form a skeletal structure at the bottom of the vehicle. The frame 20 also has a battery pack 10 fastened thereto.

[0023] 2. Front module The front module 50A is a vehicle frame component. The front module 50A is an integrally molded product in which components for the front portion of the vehicle are integrated. For example, the front module 50A is manufactured by aluminum die casting.

[0024] For example, the front module 50A is formed by integrally molding frame components and panel components. That is, the front module 50A includes, as frame components, a pair of suspension towers 51A, 51A and a pair of front side members 52A, 52A. The front module 50A also includes, as panel components, a pair of front wheel housings 53A, 53A and a dash panel 54A.

[0025] Furthermore, abutment surfaces 57A1 and 57A2 are provided at the rear end portion of the front module 50A. The abutment surfaces 57A1 and 57A2 are provided for the pair of frame side members 21A and 21B, respectively. The abutment surfaces 57A1 and 57A2 face outward in the vehicle width direction. The abutment surfaces 57A1 and 57A2 abut against the inner surfaces 21A1 and 21B1 (see FIG. 2) of the frame 20. In other words, the pair of frame side members 21A and 21B sandwich the abutment surfaces 57A1 and 57A2. In this state, the abutment surfaces 57A1 and the inner surface 21A1, and the abutment surfaces 57A2 and the inner surface 21B1 are joined by welding. This joins the front module 50A and the frame 20.

[0026] The front module 50A is assembled to the frame 20. As will be described later, the joint block 70A is used for the abutment (surface mating) between the abutment surface 57A1 and the inner surface 21A1. That is, an adhesive surface 75A is formed on a cross arm 73A (see FIG. 3) of the joint block 70A. The adhesive surface 75A is formed along the vehicle width direction. When assembling the frame 20 and the front module 50A, the insertion depth of the adhesive surface 75A into the cross member 41A is adjusted. This adjustment adjusts the separation distance W3 (see FIG. 2) between the pair of frame side members 21A, 21B along the vehicle width direction. This adjustment absorbs variations in the distance W2 between the abutment surfaces of the front module 50A.

[0027] 3. Rear module The rear module 50B is a frame component of the vehicle. Referring to Fig. 2, the rear module 50B is an integrally molded product in which components of the rear portion of the vehicle are integrated. For example, the rear module 50B is manufactured by aluminum die casting.

[0028] For example, the rear module 50B is formed by integrally molding a frame component and a panel component. That is, the rear module 50B includes a pair of rear side members 52B, 52B as frame components. The rear module 50B also includes a pair of rear wheel housings 53B, 53B as panel components. The rear module 50B also includes a gusset 55B as a reinforcing component.

[0029] The rear module 50B is assembled to the frame 20. Contact surfaces 57B1 and 57B2 are provided at the front end portion of the rear module 50B. The contact surfaces 57B1 and 57B2 are provided for the pair of frame side members 21A and 21B, respectively. The contact surfaces 57B1 and 57B2 are surfaces facing outward in the vehicle width direction. The contact surfaces 57B1 and 57B2 contact the inner surfaces 21A1 and 21B1 of the frame 20. The contact surface 57B1 and the inner surface 21A1, and the contact surface 57B2 and the inner surface 21B1 are joined by welding. This joins the rear module 50B and the frame 20.

[0030] As will be described later, the joint block 70B is used for the abutment (surface mating) between the abutment surface 57B1 and the inner surface 21B1. That is, an adhesive surface 75B is formed on the cross arm 73B (see FIG. 4) of the joint block 70B. The adhesive surface 75B is formed along the vehicle width direction. When assembling the frame 20 and the rear module 50B, the insertion depth of the adhesive surface 75B into the cross member 41B is adjusted. This adjustment adjusts the separation distance W4 (see FIG. 2) between the pair of frame side members 21A, 21B along the vehicle width direction. This adjustment absorbs variations in the distance W5 between the abutment surfaces of the rear module 50B.

[0031] 4. Frame 1 and 2, frame 20 is a framework component located in the center of the vehicle in the longitudinal direction. Frame 20 is a polygonal framework in plan view. Frame 20 includes a pair of frame side members 21A, 21B. Frame 20 also includes a pair of cross members 41A, 41B. Frame 20 also includes joint blocks 70A, 70B.

[0032] The pair of frame side members 21A, 21B extend in the front-rear direction of the vehicle. Each of the pair of frame side members 21A, 21B has openings formed at its longitudinal ends. For example, referring to FIGS. 3 and 4, openings 28A, 28B are formed at the front and rear ends of frame side member 21A. The openings at the front and rear ends of frame side member 21B are sealed by end plates 82A, 82B. For example, the pair of frame side members 21A, 21B are made of square pipes.

[0033] 3, a plurality of fastening holes 35B are drilled in the bottom wall of frame side member 21B. Fastening holes 35B are aligned with the axes of fastening holes 11 of battery pack 10 (see FIG. 2). Battery pack 10 is then fastened to frame side member 21B by bolt and nut tightening.

[0034] The front end of the frame side member 21B is joined to the left end of the cross member 41A. For example, the two are welded together. Note that part of the cross member 41A is not shown in FIG. 3. Also, referring to FIG. 4, the rear end of the frame side member 21B is joined to the left end of the cross member 41B. Note that part of the cross member 41B is not shown in FIG. 4. The rear end of the frame side member 21B and the left end of the cross member 41B are welded together, for example. This joining forms a C-shaped sub-assembly by the frame side member 21B and the cross members 41A and 41B.

[0035] As will be described later, a C-shaped sub-assembly consisting of frame side member 21B and cross members 41A, 41B is joined to frame side member 21A with adhesive via joint blocks 70A, 70B. During this joining, the distance between the sub-assembly and frame side member 21A in the vehicle width direction is adjusted by joint blocks 70A, 70B.

[0036] 3 and 4, injection hole 24A is drilled in the front end of frame side member 21A. Also, injection hole 24B is drilled in the rear end of frame side member 21A. For example, injection holes 24A and 24B are drilled in the upper wall of frame side member 21A.

[0037] 4, a plurality of fastening holes 35A are drilled in the bottom wall of the frame side member 21A. To accommodate the vehicle width direction adjustment function of the joint blocks 70A and 70B, which will be described later, the fastening holes 35A may be elongated holes. For example, the long axis diameter of the fastening holes 35A is set along the vehicle width direction.

[0038] Cross members 41A, 41B extend in the vehicle width direction. Referring to Figure 3, cross member 41A has openings 48A, 49A at its longitudinal ends. That is, cross member 41A has openings 48A, 49A at both ends in the vehicle width direction. Referring to Figure 4, cross member 41B has openings 48B, 49B at its longitudinal ends. That is, cross member 41B has openings 48B, 49B at both ends in the vehicle width direction. For example, cross members 41A, 41B are made of square pipes.

[0039] 3, the wall of the cross member 41A surrounding the opening 48A includes a covered surface 42A and exposed surfaces 43A, 44A, and 45A. As illustrated in FIG. 7, when the front module 50A is assembled to the frame 20, the covered surface 42A is covered by the front module 50A (framework component). The exposed surfaces 43A, 44A, and 45A (see FIG. 3) are exposed to the front module 50A when the front module 50A is assembled to the frame 20.

[0040] An injection hole 47A is drilled in one of exposed surfaces 43A, 44A, 45A. For example, injection hole 47A is drilled in exposed surface 43A, which is the front surface of cross member 41A. Injection hole 47A is formed near right end opening 48A of cross member 41A.

[0041] An insertion hole 46A is drilled in the bottom wall of the cross member 41A, near a right end opening 48A of the cross member 41A.

[0042] As will be described later, adhesive 90 (see FIG. 8) is injected through injection hole 47A. In order to prevent adhesive 90 from leaking out, injection hole 47A and insertion hole 46A are offset in the vehicle width direction. For example, insertion hole 46A is positioned closer to opening 48A than injection hole 47A.

[0043] 4, the wall of cross member 41B surrounding opening 48B includes covered surface 42B and exposed surfaces 43B, 44B, and 45B. Injection hole 47B is drilled in one of exposed surfaces 43B, 44B, and 45B. For example, injection hole 47B is drilled in exposed surface 43B, which is the rear surface of cross member 41B. Injection hole 47B is formed near right end opening 48B of cross member 41B.

[0044] Additionally, an insertion hole 46B is drilled in the bottom wall of cross member 41B. Insertion hole 46B is positioned closer to opening 48B than injection hole 47B.

[0045] Referring to Fig. 3, joint block 70A connects the front end of frame side member 21A to the right end of cross member 41A. Referring to Fig. 4, joint block 70B connects the rear end of frame side member 21A to the right end of cross member 41B. Joint blocks 70A and 70B are made of a metal material. For example, joint blocks 70A and 70B are manufactured by aluminum die casting.

[0046] 3, the joint block 70A is an L-shaped component in a plan view. The joint block 70A includes a base 71A, a side arm 72A, and a cross arm 73A. The side arm 72A extends rearward from the base 71A. The cross arm 73A extends inward in the vehicle width direction from the base 71A.

[0047] The cross-sectional shape of the side arm 72A matches the cross-sectional shape of the frame side member 21A. For example, the cross-sectional shape of the side arm 72A is rectangular. Furthermore, the dimensions of the side arm 72A, both in width and height, are smaller than the width and height of the opening 28A of the frame side member 21A. In other words, the side arm 72A is inserted into the opening 28A.

[0048] Similarly, the cross-sectional shape of the cross arm 73A matches the cross-sectional shape of the cross member 41A. For example, the cross-sectional shape of the cross arm 73A is rectangular. Furthermore, the dimensions of the cross arm 73A, both in width and height, are smaller than the width and height of the opening 48A of the cross member 41A. In other words, the cross arm 73A is inserted into the opening 48A.

[0049] The side arm 72A and the cross arm 73A have bonding surfaces 74A and 75A. For example, the entire outer peripheral surfaces of the side arm 72A and the cross arm 73A serve as the bonding surfaces 74A and 75A. An adhesive 90 (see FIGS. 5 and 8) is injected into the bonding surfaces 74A and 75A. Injection grooves 76A and 77A are formed in the bonding surfaces 74A and 75A. The injection grooves 76A and 77A are formed around the entire circumference of the side arm 72A and the cross arm 73A. For example, the injection groove 76A is formed in the center of the bonding surface 74A in the vehicle's front-to-rear direction. Similarly, the injection groove 77A is formed in the center of the bonding surface 75A in the vehicle's width direction.

[0050] The bonding surface 74A of the side arm 72A extends in the vehicle longitudinal direction. For example, a tolerance is set for the overall length of the frame side members 21A, 21B along the vehicle longitudinal direction. The dimension of the bonding surface 74A in the vehicle longitudinal direction is set so that the length is no more than twice this tolerance. In other words, the bonding surface 75A absorbs variations in the overall length of the frame side members 21A, 21B.

[0051] The adhesive surface 75A of the cross arm 73A extends in the vehicle width direction. For example, a tolerance is set for the distance W2 between the contact surfaces of the front module 50A (see FIG. 2). The dimension of the adhesive surface 75A in the vehicle width direction is set so that the length is no more than twice this tolerance. In other words, the adhesive surface 75A absorbs variations in the distance W2 between the contact surfaces.

[0052] Assume that the design value of the distance W2 between the contact surfaces is 1800 mm. The dimensional tolerance of castings is specified in JIS B 0403:1995. According to this, the strictest tolerance class for a casting with a design dimension of 1800 mm is CT7. According to CT7, the dimensional tolerance is set to 2.6 mm. Therefore, the dimension of the bonding surface 75A in the vehicle width direction is set to, for example, 3.0 mm or more and 6.0 mm or less.

[0053] The cross arm 73A also includes an extension 78A. The extension 78A extends further inward in the vehicle width direction from the adhesive surface 75A. A protruding piece 79A is formed on the underside of the extension 78A. As will be described later, when the front module 50A and the frame 20 are assembled, the protruding piece 79A is inserted into the insertion hole 46A.

[0054] Referring to Figure 4, joint block 70B basically has the same structure as joint block 70A. Joint block 70B is an L-shaped component in a plan view. Joint block 70B includes a base 71B, a side arm 72B, and a cross arm 73B. Side arm 72B extends forward from base 71B. Cross arm 73B extends inward in the vehicle width direction from base 71B.

[0055] The cross-sectional shape of the side arm 72B matches the cross-sectional shape of the frame side member 21A. For example, the cross-sectional shape of the side arm 72B is rectangular. Furthermore, the dimensions of the side arm 72B, both in width and height, are smaller than the width and height of the opening 28B of the frame side member 21A. In other words, the side arm 72B is inserted into the opening 28B.

[0056] Similarly, the cross-sectional shape of the cross arm 73B matches the cross-sectional shape of the cross member 41B. For example, the cross-sectional shape of the cross arm 73B is rectangular. Furthermore, the dimensions of the cross arm 73B, both in width and height, are smaller than the width and height of the opening 48B of the cross member 41B. In other words, the cross arm 73B is inserted into the opening 48B.

[0057] The side arm 72B and the cross arm 73B have bonding surfaces 74B and 75B. For example, the entire outer peripheral surfaces of the side arm 72B and the cross arm 73B serve as the bonding surfaces 74B and 75B. An adhesive 90 (see FIGS. 5 and 8) is injected into the bonding surfaces 74B and 75B. Injection grooves 76B and 77B are formed in the bonding surfaces 74B and 75B. The injection grooves 76B and 77B are formed around the entire circumference of the side arm 72B and the cross arm 73B. For example, the injection groove 76B is formed in the center of the bonding surface 74B in the vehicle's longitudinal direction. Similarly, the injection groove 77B is formed in the center of the bonding surface 75B in the vehicle's transverse direction.

[0058] The bonding surface 74B of the side arm 72B extends in the vehicle front-rear direction. For example, a tolerance is set for the overall length of the frame side members 21A, 21B in the vehicle front-rear direction. The dimension of the bonding surface 74B in the vehicle front-rear direction is set so that the length is no more than twice this tolerance.

[0059] The adhesive surface 75B of the cross arm 73B extends in the vehicle width direction. For example, a tolerance is set for the distance W5 between the contact surfaces of the rear module 50B (see FIG. 2). The dimension of the adhesive surface 75B in the vehicle width direction is set so that its length is no more than twice this tolerance.

[0060] The cross arm 73B also includes an extension 78B. The extension 78B extends further inward in the vehicle width direction from the adhesive surface 75B. A protruding piece 79B is formed on the underside of the extension 78B. As will be described later, when the rear module 50B and the frame 20 are assembled, the protruding piece 79B is inserted into the insertion hole 46B.

[0061] 5. Skeletal structure assembly process 5 to 8 illustrate an assembly process for a vehicle frame structure. Referring to FIG. 5, the side arm 72A of the joint block 70A is inserted into the opening 28A. The side arm 72A is inserted into the frame side member 21A over its entire length. For example, the side arm 72A is inserted into the frame side member 21A until the end of the opening 28A abuts against the base 71A.

[0062] Furthermore, adhesive 90 is injected through injection hole 24A. Adhesive 90 is injected along injection groove 76A around the entire periphery of side arm 72A. As illustrated in Figure 5, opening 28A is sealed by adhesive 90 and side arm 72A.

[0063] Here, a bottom surface 72A1 of the side arm 72A is flat. The bottom surface 72A1 abuts against a bottom surface 21A2 of the frame side member 21A. As will be described later, the bottom surface 72A1 of the side arm 72A serves as a control surface for controlling the height difference between the frame side member 21A and the cross members 41A and 41B.

[0064] In the same manner as the joint block 70A, the side arm 72B of the joint block 70B (see FIG. 4) is inserted into the opening 28B. The side arm 72B is inserted into the frame side member 21A over its entire length.

[0065] Furthermore, adhesive 90 (see FIG. 5) is injected from injection hole 24B. Adhesive 90 is injected along injection groove 76B around the entire periphery of side arm 72B. Opening 28B is sealed by adhesive 90 and side arm 72B.

[0066] The bottom surface of the side arm 72B is flat and comes into contact with the bottom surface of the cylinder of the frame side member 21 A. As will be described later, the bottom surface of the side arm 72B serves as a control surface for controlling the height difference between the frame side member 21A and the cross members 41A and 41B.

[0067] Referring to Figure 6, the protruding piece 79A of the joint block 70A is inserted into the insertion hole 46A. This temporarily fastens the joint block 70A and the frame side member 21A (see Figure 3) to the cross member 41A. Similarly, the protruding piece 79B of the joint block 70B (see Figure 4) is inserted into the insertion hole 46B. This temporarily fastens the joint block 70B and the frame side member 21B to the cross member 41B.

[0068] 7, the front module 50A is placed on the temporarily fastened frame 20. Similarly, the rear module 50B (see FIG. 2) is placed on the temporarily fastened frame 20. With reference to FIGS. 2 and 7, the front module 50A, the rear module 50B, and the frame side member 21B are positioned. During this positioning, the abutment surface 57A2 of the front module 50A and the abutment surface 57B2 of the rear module 50B abut against the inner surface 21B1 of the frame side member 21B.

[0069] 7, as shown by a gap W10, the contact surface 57A1 and the inner side surface 21A1 of the frame side member 21A are spaced apart. Similarly, the contact surface 57B1 (see FIG. 2) and the inner side surface 21A1 are spaced apart in the vehicle width direction.

[0070] 6, the cross arm 73A is gradually inserted into the cross member 41A. Referring to Fig. 8, the cross arm 73A is inserted into the cross member 41A until the abutment surface 57A1 abuts against the inner surface 21A1 of the frame side member 21A.

[0071] 4, cross arm 73B is gradually inserted into cross member 41B. Referring to FIG. 8, cross arm 73A is inserted into cross member 41A until abutment surface 57A1 abuts against inner surface 21A1 of frame side member 21A. Similarly, cross arm 73B is inserted into cross member 41B until abutment surface 57B1 (see FIG. 2) abuts against inner surface 21B1 of frame side member 21B.

[0072] This assembly process may be performed before the adhesive 90 injected onto the bonding surfaces 74A, 74B of the side arms 72A, 72B hardens. If there is variation in the frame side members 21A, 21B in the vehicle longitudinal direction, the side arms 72A, 72B move relative to the frame side member 21A. In other words, the dimensional variation of the frame side members 21A, 21B is absorbed by the bonding surfaces 74A, 74B of the side arms 72A, 72B.

[0073] 4 and 8, adhesive 90 is injected through injection holes 47A and 47B. Adhesive 90 is filled along injection grooves 77A and 77B around the entire periphery of bonding surfaces 75A and 75B. As shown by gap W0 in FIG. 8, if the distance W2 between the contact surfaces (see FIG. 2) exceeds the specified width, bonding surface 75A absorbs the excess.

[0074] Furthermore, the bottom surface 73A1 of the cross arm 73A and the bottom surface 72A1 of the side arm 72A are formed on the same plane. Similarly, the bottom surfaces of the cross arms 73B and 72B are also formed on the same plane. As illustrated in FIG. 8, the in-cylinder bottom surface 41A1 of the cross member 41A and the bottom surface 73A1 of the cross arm 73A are brought into contact. Furthermore, referring to FIG. 5, the bottom surface 72A1 of the side arm 72A and the in-cylinder bottom surface 21A2 of the frame side member 21A are brought into contact. At this time, the relative height between the frame side member 21A and the cross member 41A is set to a specified value. Similarly, the relative height between the frame side member 21A and the cross member 41B is set to a specified value. [Explanation of symbols]

[0075] 10 battery pack, 20 frame, 21A, 21B frame side member, 21A1, 21B1 inner surface of frame side member, 21A2 inner bottom surface of frame side member, 24A, 24B injection hole, 28A, 28B opening, 41A, 41B cross member, 41A1 inner bottom surface of cross member, 42A, 42B coated surface, 43A-45A, 43B-45B exposed surface, 46A, 46B insertion hole, 48A, 48B opening, 50A front module, 50B rear module, 57A1, 57A2 abutment surface of front module, 57B1, 57B2 abutment surface of rear module, 70A, 70B joint block, 71A, 71B base, 72A, 72B side arm, 72A1 Bottom surface of side arm, 73A, 73B cross arm, 73A1 bottom surface of cross arm, 74A, 74B, 75A, 75B adhesive surface, 76A, 76B, 77A, 77B injection groove, 78A, 78B extension, 79A, 79B protruding piece, 90 adhesive.

Claims

1. A polygonal frame, an integrally molded skeletal component that is assembled to the frame; A vehicle frame structure comprising: The frame is a pair of side members extending in the vehicle front-rear direction and having openings formed at longitudinal ends; a pair of cross members extending in the vehicle width direction and having openings formed at their longitudinal ends; a joint block that connects the side member and the cross member; Equipped with the frame component is provided with abutment surfaces for contacting the pair of side members, The joint block includes a cross arm that is inserted into the opening of the cross member, The cross arm has an adhesive surface provided along the vehicle width direction. Vehicle frame structure.

2. 2. A vehicle frame structure according to claim 1, a wall surrounding the opening of the cross member includes a covered surface that is covered by the frame component and an exposed surface; An adhesive injection hole is drilled in the exposed surface. Vehicle frame structure.

3. 2. A vehicle frame structure according to claim 1, the adhesive surface of the cross arm is provided over the entire periphery of the cross arm, An injection groove is formed around the entire periphery of the adhesive surface. Vehicle frame structure.

4. 2. A vehicle frame structure according to claim 1, the joint block includes a side arm that is inserted into the opening of the side member, The cross arm and the side arm each have a flat surface formed on the bottom thereof, the flat surface of the cross arm and the flat surface of the side arm are formed on the same plane; Vehicle frame structure.

5. 2. A vehicle frame structure according to claim 1, the cross arm includes an extension extending from the adhesive surface; A protruding piece is formed on the lower surface of the extension portion, An insertion hole into which the protruding piece can be inserted is drilled in a bottom wall of the walls surrounding the opening of the cross member. Vehicle frame structure.

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