Assembly structure

Abstract

To provide an assembly structure which can change an assembly position of an object member to an assembled member.SOLUTION: An assembly structure, which assembles an object member to an assembled member including an open hole, comprises: a shaft body part which has a shaft size smaller than an opening size of the open hole, and which is inserted through the open hole and supports the object member; and a filling part which is inserted into a clearance between the shaft body part and the assembled part in the open hole and fills the clearance. The clearance is filled by the filling part, whereby the shaft body part becomes eccentric from a central axis of the open hole and is inserted in the open hole. Eccentric directions of the shaft body part from the central axis of the open hole are different depending on rotational angles of the filling part with the central axis of the open hole as a rotation axis.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to an assembled structure.

Background Art

[0002] Patent Document 1 below discloses an example of a vehicle equipped with a leaf spring type suspension device. Both ends of a leaf spring extending in the vehicle length direction are rotatably supported by side rails with the vehicle width direction as the rotation axis.

[0003] In particular, the rear end portion of the leaf spring in the vehicle length direction is rotatably supported by the side rail via a shackle, and the leaf spring supports the rear wheels. Therefore, when the leaf spring deforms as the rear wheels move in the vehicle height direction, the rear wheels also move in the vehicle length direction.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a vehicle as disclosed in Patent Document 1, when turning, the leaf spring deforms, causing the direction of the axle relative to the vehicle body to change and generating a lateral force as if the steering wheel were steered. That is, in a vehicle, axle steer occurs when turning.

[0006] The state of deformation of the leaf spring also changes according to the mounting positions of both ends thereof. That is, the magnitude of the lateral force related to axle steer also changes according to the mounting positions of both ends of the leaf spring. The allowable range of the magnitude of the lateral force related to axle steer varies depending on the vehicle or vehicle type. Also, the appropriate magnitude of the lateral force related to axle steer varies depending on the vehicle or vehicle type.

[0007] Therefore, there may be a change in the assembly position of at least one end of the leaf spring for each vehicle or vehicle type. On the other hand, when changing the assembly position of the end of the leaf spring, additional effort such as preparing parts with different dimensions is required.

[0008] The present invention has been made in view of the above circumstances, and an object thereof is to provide an assembly structure capable of changing the assembly position of a target member with respect to an assembled member.

Means for Solving the Problems

[0009] The present invention has been made to solve at least a part of the above problems, and can be realized in the following aspects or application examples.

[0010] The assembly structure according to this application example is an assembly structure for assembling a target member to an assembled member having a through hole, and includes a shaft body portion having a shaft size smaller than the opening size of the through hole, inserted into the through hole, and supporting the target member, and a filling portion inserted into a gap between the shaft body portion and the assembled member in the through hole and filling the gap. By filling the gap with the filling portion, the shaft body portion is inserted into the through hole eccentrically from the central axis of the through hole, and the eccentric direction of the shaft body portion from the central axis of the through hole is different for each rotation angle of the filling portion having the central axis of the through hole as a rotation axis.

[0011] According to this application example, by simply changing the degree of rotation of the filling portion, the eccentric direction of the shaft body portion from the central axis of the through hole can be changed. Further, from this, with respect to the target member supported by the shaft body portion, by simply changing the degree of rotation of the filling portion, the assembly position with respect to the assembled member can be changed. That is, the assembly position of the target member with respect to the assembled member can be selected from a plurality of locations.

Brief Description of the Drawings

[0012]

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Mode for Carrying Out the Invention

[0013] 1. Configuration of Vehicle First, with reference to FIG. 1, the specific configuration of the vehicle 10 of the present embodiment will be described. FIG. 1 is a schematic diagram showing the configuration of the vehicle 10 of the present embodiment.

[0014] In the following description, the longitudinal direction of the vehicle 10 may be described as the X direction or the front-rear direction. Also, in the following description, the height direction of the vehicle 10 may be described as the Z direction, the up-down direction, or the vertical direction. Furthermore, in the following description, the width direction of the vehicle 10 may be described as the Y direction or the left-right direction.

[0015] Also, in the following description, the horizontal plane may be described as the XY plane. Also, in the following description, the plane including the longitudinal direction and the height direction of the vehicle 10 may be described as the XZ plane. Furthermore, in the following description, the plane including the width direction and the height direction of the vehicle 10 may be described as the YZ plane.

[0016] Furthermore, in the following description, for a pair of symmetric parts, the symbol of the part on the right side may be suffixed with R, and the symbol of the part on the left side may be suffixed with L for distinction.

[0017] The vehicle 10 is an electric vehicle that uses the electric power stored in a battery (not shown) as a driving force. Examples of electric vehicles include electric vehicles (EV: Electric Vehicle), hybrid electric vehicles (HEV: Hybrid Electric Vehicle), plug-in hybrid vehicles (PHV: Plug-in Hybrid Vehicle), and fuel cell vehicles (FCV: Fuel Cell Vehicle).

[0018] The vehicle 10 is specifically a truck of an electric vehicle, and the vehicle body frame 20 is, for example, a chassis frame of a ladder frame structure applied to a large vehicle such as a truck. The vehicle body frame 20 includes side rails 22 (22R, 22L), a plurality of cross members 24, and the like.

[0019] The side rails 22 extend in the vehicle length direction. Also, the side rail 22R and the side rail 22L are parallel to each other while being spaced apart from each other in the vehicle width direction.

[0020] The plurality of cross members 24 extend in the vehicle width direction and connect the side rail 22R and the side rail 22L. The cross member 24 connects, for example, the front end portion, the intermediate position, the rear end portion, etc. with respect to the side rail 22R and the side rail 22L.

[0021] The vehicle body frame 20 supports various components of the vehicle 10. For example, in front of the vehicle 10, a transmission mechanism (not shown) that transmits the steering force from a steering wheel (not shown) to the front wheels 28 (28R, 28L) via a steering shaft 26 and the like is mounted. Note that the front wheels 28 are driven wheels and are suspended from the vehicle body frame 20.

[0022] A drive unit 30 is mounted behind the vehicle 10. The drive unit 30 converts the electric power supplied from the battery into driving force and transmits it to the rear wheels 34 (34R, 34L) via drive shafts 32 (32R, 32L). The drive unit 30 includes an inverter (not shown), a motor generator (not shown), a gearbox (not shown), a differential device (not shown), etc., and these are integrally configured. Note that the rear wheels 34 are drive wheels and are suspended from the side rails 22 of the vehicle body frame 20 by a suspension device 36.

[0023] The suspension device 36 includes a saddle (hollow member) 38 (38R, 38L), leaf springs (elastic bodies) 40 (40R, 40L), an axle beam (beam member) 42, and the like.

[0024] The saddle 38 is a hollow member, and the drive shaft 32 is accommodated in the internal space. Further, the saddle 38 is connected to the leaf spring 40 by a U-bolt (not shown).

[0025] The leaf spring 40 is formed by stacking leaf springs extending in the vehicle length direction. The leaf spring 40 is provided below the side rail 22 in a deflected state, and both ends thereof are connected to the lower part of the side rail 22. The axle beam 42 is a member that connects the saddles 38.

[0026] From these, the leaf spring 40 suspends the drive shaft 32 and the rear wheels 34 from the side rail 22 below the side rail 22, and the leaf spring 40 elastically supports the vehicle body. Further, the drive shaft 32, the rear wheels 34, etc. are elastically supported by the leaf spring 40.

[0027] FIG. 2 is a schematic perspective view showing the configuration around the side rail 22 and the leaf spring 40 of the present embodiment. In FIG. 2, the illustration of the saddle 38 and the like is omitted. Specifically, the front end portion of the leaf spring 40 is rotatably supported by the first support mechanism 50 about the vehicle width direction as a rotation axis, and the rear end portion of the leaf spring 40 is rotatably supported by the second support mechanism 70 about the vehicle width direction as a rotation axis.

[0028] The first support mechanism 50 includes a first bracket 52, a first assembly structure 58, and the like. The first bracket 52 includes plate-like members 54 (54R, 54L) provided at the bottom of the side rail 22. The plate-like members 54R and 54L are arranged along the vehicle width direction and extend parallel to each other.

[0029] The front end portion of the leaf spring 40 is formed as the front annular portion 40F by curving so as to turn back, and the front annular portion 40F is interposed between the plate-like members 54R and 54L.

[0030] The first assembling structure 58 assembles the front annular portion 40F of the leaf spring 40 to the first bracket 52. The first assembling structure 58 includes a first shaft body portion 60, a first fixing member 62, and the like. The first shaft body portion 60 is a rod-shaped member whose axial direction corresponds to the vehicle width direction, specifically, a cylindrical member, and is inserted through the first bracket 52, the front annular portion 40F, and the like.

[0031] From these, the first shaft body portion 60 is supported by the first bracket 52, and the front annular portion 40F of the leaf spring 40 is rotatably supported by the first shaft body portion 60 with the vehicle width direction as the rotation axis. Note that the first shaft body portion 60 is prevented from falling off the first bracket 52 by the first fixing member 62.

[0032] The second support mechanism 70 includes a second bracket 72, shackle plates 76 (76R, 76L), a cylindrical portion 78, a second assembling structure 80, a third assembling structure 88, and the like.

[0033] The second bracket 72 includes plate-like members 74 (74R, 74L) provided at the bottom of the side rail 22. The plate-like members 74R and 74L are arranged along the vehicle width direction and extend parallel to each other.

[0034] The shackle plates 76R and 76L are oblong plate-like members arranged along the vehicle width direction and extending parallel to each other. Regarding the shackle plates 76R and 76L, one end portion (one end) in the longitudinal direction is interposed between the plate-like members 74R and 74L.

[0035] The cylindrical portion 78 is a cylindrical member extending in the vehicle width direction, specifically, a circular cylindrical member. The cylindrical portion 78 is interposed between the plate-like members 74R and 74L and is inserted through a circular opening provided at one end portion of the shackle plates 76R and 76L.

[0036] The second assembling structure 80 assembles the cylindrical portion 78 etc. to the second bracket 72. The second assembling structure 80 includes a second shaft body portion 82, a second fixing member 84, etc. The second shaft body portion 82 is a rod-shaped member whose axial direction corresponds to the vehicle width direction, specifically, a cylindrical member. The second shaft body portion 82 is inserted through one end portions etc. of the shackle plates 76R, 76L in addition to the second bracket 72 and the cylindrical portion 78. Also, the second shaft body portion 82 is prevented from dropping off from the second bracket 72 by the second fixing member 84.

[0037] The rear end portion of the leaf spring 40 is formed as a rear annular portion 40B by curving back in the same manner as the front annular portion 40F, and the rear annular portion 40B is interposed between the shackle plates 76R, 76L at the other end portion (the other end) in the longitudinal direction of the shackle plates 76R, 76L.

[0038] The third assembling structure 88 assembles the rear annular portion 40B of the leaf spring 40 to the other end portions of the shackle plates 76R, 76L. The third assembling structure 88 includes a third shaft body portion 90, a third fixing member 92, etc. The third shaft body portion 90 is a rod-shaped member whose axial direction corresponds to the vehicle width direction, specifically, a cylindrical member, and is inserted through the other end portions of the shackle plates 76R, 76L and the rear annular portion 40B, etc. Also, the third shaft body portion 90 is prevented from dropping off from the other end portions of the shackle plates 76R, 76L by the third fixing member 92.

[0039] From these, the second shaft body portion 82 is directed by the second bracket 72, the cylindrical portion 78 etc. are supported by the second shaft body portion 82, and the shackle plates 76R, 76L etc. are rotatably supported by the cylindrical portion 78 with the vehicle width direction as the rotation axis. Also, the third cylindrical portion 86 etc. are supported by the third shaft body portion 90, and the rear annular portion 40B of the leaf spring 40 is rotatably supported by the third shaft body portion 90 with the vehicle width direction as the rotation axis.

[0040] According to the first support mechanism 50 and the second support mechanism 70 as described above, when the rear wheel 34 is displaced in the vehicle height direction, the leaf spring 40 deforms. Specifically, when the rear wheel 34 is displaced in the vehicle height direction, the leaf spring 40 transitions between a deflected state and an extended state. Further, when the leaf spring 40 deforms in this way, the position of the rear annular portion 40B also displaces in both vehicle length directions.

[0041] For example, when the rear wheel 34 is displaced upward and the leaf spring 40 transitions from a deflected state to an extended state, the rear annular portion 40B of the leaf spring 40 also displaces rearward. Further, thereafter, when the rear wheel 34 is displaced downward and the leaf spring 40 transitions from an extended state to a deflected state, the rear annular portion 40B of the leaf spring 40 also displaces forward.

[0042] 2. Assembly Structure FIG. 3 is a schematic cross-sectional view of the second support mechanism 70 of the present embodiment. Specifically, FIG. 3 shows a cross-section obtained by cutting the second support mechanism 70 along the vehicle height direction. Further, in FIG. 3, illustration of the second fixing member 84, the third fixing member 92, etc. is omitted. FIG. 4 is a schematic cross-sectional view showing an AR-AR cross-section of the second shaft body portion 82 shown in FIG. 3. FIG. 5 is a schematic cross-sectional view showing an AL-AL cross-section of the second shaft body portion 82 shown in FIG. 3.

[0043] In addition to the second bracket 72 and the like, the second support mechanism 70 includes shackle bushes 94, 96. The shackle bushes 94, 96 are cylindrical elastic members that absorb impacts associated with displacement of the rear wheel 34. Specifically, the shackle bushes 94, 96 are cylindrical elastic members.

[0044] The shackle bush 94 is disposed inside the cylindrical portion 78 and the second shaft body portion 82 is inserted therethrough. The shackle bush 96 is disposed inside the rear annular portion 40B of the leaf spring 40 and the third shaft body portion 90 is inserted therethrough. Note that shackle bushes (not shown) similar to the shackle bushes 94, 96 are also disposed inside the front annular portion 40F of the leaf spring 40.

[0045] Further, the second bracket 72, specifically, the plate-like members 74R and 74L, extend in the vehicle width direction and are provided with through holes 98 (98R, 98L) that enable the insertion of the second shaft body portion 82. Also, the opening shape of the through hole 98 is a rounded polygon. Specifically, the opening shape of the through hole 98 is a rounded rectangle formed by combining a rectangle and a semi-circle, and it extends in the vehicle height direction.

[0046] Also, within the through hole 98, the shaft size of the second shaft body portion 82 is smaller than the opening size of the through hole 98. Therefore, a gap 99 (99R, 99L) is formed between the second shaft body portion 82 and the plate-like member 74 within the through hole 98.

[0047] Furthermore, regarding the second shaft body portion 82, from one (right) side, the shaft size is constant up to the position corresponding to the surface facing the plate-like member 74R of the plate-like member 74L, that is, the inner surface, but at that position, the shaft size gradually becomes smaller.

[0048] Therefore, the other (left) side of the second shaft body portion 82 is provided with a wall surface extending in the radial direction, and this wall surface abuts against the inner surface of the plate-like member 74L. That is, in this case, for the other side of the second shaft body portion 82, the position is determined by the wall surface extending in the radial direction of the second shaft body portion 82 abutting against the inner surface of the plate-like member 74L. Note that a part of the other end portion of the second shaft body portion 82 is provided with a male screw portion.

[0049] Note that the shackle plates 76R and 76L extend in the vehicle width direction and are provided with through holes 100 (100R, 100L) that enable the insertion of the third shaft body portion 90. In the example shown in FIG. 3, the opening shape of the through hole 100 is circular. Also, within the through hole 100, the shaft size of the third shaft body portion 90 is the same as the opening size of the through hole 100. Therefore, the through hole 100 is filled to such an extent that the third shaft body portion 90 can slide by the third shaft body portion 90.

[0050] FIG. 6 is a schematic cross-sectional view of the second support mechanism 70 of the present embodiment, similar to FIG. 3. FIG. 7 is a schematic cross-sectional view showing an AR-AR cross-section of the second shaft body portion 82 and the like shown in FIG. 6. FIG. 8 is a schematic cross-sectional view showing an AL-AL cross-section of the second shaft body portion 82 and the like shown in FIG. 6. FIG. 9 is a schematic cross-sectional view of the second support mechanism 70 of the present embodiment, similar to FIG. 3. FIG. 10 is a schematic cross-sectional view showing an AR-AR cross-section of the second shaft body portion 82 and the like shown in FIG. 9. FIG. 11 is a schematic cross-sectional view showing an AL-AL cross-section of the second shaft body portion 82 and the like shown in FIG. 9. The second assembly structure 80 includes an annular member 102, filling portions 104(104R, 104L), etc. in addition to the second shaft body portion 82 and the second fixing members 84(84R, 84L).

[0051] One end of the second shaft body portion 82 is connected to the second fixing member 84R by welding or the like. The second fixing member 84R is a plate-like member sized to cover the through-hole 98R. Also, the second fixing member 84R is connected to the filling portion 104R by welding or the like. The filling portion 104R is inserted into the gap 99R between the second shaft body portion 82 and the plate-like member 74R in the through-hole 98R and fills the gap 99R.

[0052] The other end of the second shaft body portion 82 is inserted through the annular member 102 outside the second bracket 72. The annular member 102 is a general-purpose washer. Also, the annular member 102 is connected to the filling portion 104L by welding or the like. The filling portion 104L is inserted into the gap 99L between the second shaft body portion 82 and the plate-like member 74L in the through-hole 98L and fills the gap 99L.

[0053] Also, the other end of the second shaft body portion 82 is inserted through the second fixing member 84L outside the second bracket 72 and outside the annular member 102. The second fixing member 84L is a general-purpose nut having a female screw portion, and the second shaft body portion 82 is fixed to the second bracket 72 by screwing and tightening the second fixing member 84L to the male screw portion provided at the other end of the second shaft body portion 82.

[0054] In this way, the filling portion 104 is inserted into the gap 99 between the second shaft body portion 82 and the plate-like member 74 in the through-hole 98, and by filling the gap 99, the second shaft body portion 82 is eccentric from the central axis C of the through-hole 98. That is, according to the filling portion 104, the second shaft body portion 82 is eccentric from the central axis C of the through-hole 98 and is inserted through the through-hole 98.

[0055] The amount of eccentricity of the second shaft body portion 82 from the central axis C of the through-hole 98 is set according to the opening size of the through-hole 98 and the shaft size of the second shaft body portion 82. In other words, the amount of eccentricity of the second shaft body portion 82 from the central axis C of the through-hole 98 is set according to the size of the gap 99 between the second shaft body portion 82 and the plate-like member 74 in the through-hole 98. Further, in other words, the amount of eccentricity of the second shaft body portion 82 from the central axis C of the through-hole 98 is set according to the size of the filling portion 104.

[0056] Also, the eccentricity direction E of the second shaft body portion 82 from the central axis C of the through-hole 98 is set according to the rotation angle θ of the filling portion 104 when the central axis C of the through-hole 98 is used as the rotation axis.

[0057] In the examples shown in FIGS. 6 to 8, since the filling portion 104 is located above the through-hole 98, the second shaft body portion 82 is eccentric downward from the central axis C of the through-hole 98 and is inserted through the through-hole 98. On the other hand, in the examples shown in FIGS. 9 to 11, since the filling portion 104 is located below the through-hole 98, the second shaft body portion 82 is eccentric upward from the central axis C of the through-hole 98 and is inserted through the through-hole 98.

[0058] In other words, in the examples shown in FIGS. 6 to 8, the rotation angle θ of the filling portion 104 is 0°, and the eccentricity direction E from the central axis C of the through-hole 98 of the second shaft body portion 82 is downward. In the examples shown in FIGS. 9 to 11, the rotation angle θ of the filling portion 104 is 180°, and the eccentricity direction E from the central axis C of the through-hole 98 of the second shaft body portion 82 is upward.

[0059] Further, in order to support the cylindrical portion 78, the shackle plate 76, etc., when the eccentric direction E from the central axis C of the through hole 98 of the second shaft body portion 82 changes, accordingly, the positions of these also displace. That is, when the eccentric direction E from the central axis C of the through hole 98 of the second shaft body portion 82 changes, the assembly position of the cylindrical portion 78, etc. with respect to the second bracket 72 also changes. In the examples shown in FIGS. 6 to 8 and FIGS. 9 to 11, there are two assembly positions of the cylindrical portion 78, etc. with respect to the second bracket 72, and the assembly position of the cylindrical portion 78, etc. can be selected from among them.

[0060] Note that one end of the third shaft body portion 90 is connected by welding or the like to a third fixing member 92R which is a member similar to the second fixing member 84R. Further, the other end of the third shaft body portion 90 is inserted through an annular member 106 which is a member similar to the annular member 102 outside the shackle plates 76R, 76L. Furthermore, the other end of the third shaft body portion 90 is inserted through a third fixing member 92L which is a member similar to the second fixing member 84L outside the shackle plates 76R, 76L and also outside the annular member 106. Furthermore, the third shaft body portion 90 is fixed to the shackle plates 76R, 76L by the third fixing member 92L being screwed and tightened to a male screw portion provided at the other end of the third shaft body portion 90.

[0061] According to such a through hole 98 of the second bracket 72 and the second assembly structure 80, the assembly position of the cylindrical portion 78, etc. with respect to the second bracket 72 can be selected from a plurality of positions.

[0062] The specific configuration shown in this embodiment is an example, and the aspects of the present invention are not limited to the configurations shown in each embodiment. For example, the vehicle 10 may be an engine-type vehicle.

[0063] Also, if it is possible to select the assembly position of the cylindrical portion 78, etc. with respect to the second bracket 72 from a plurality of positions, the opening shape of the through hole 98, the shaft shape of the second shaft body portion 82, the shape of the filling portion 104, etc. are not particularly limited.

[0064] Also, regarding one end of the second shaft body portion 82, it may be fixed to the plate-like member 74R using members similar to the annular member 102 and the second fixing member 84L. In this case, a part of one end of the second shaft body portion 82 is provided with a male screw portion. Further, regarding the other end of the second shaft body portion 82, it may be fixed to the plate-like member 74L using a member similar to the second fixing member 84R.

[0065] Also, regarding one side of the second shaft body portion 82, the shaft size of the second shaft body portion 82 may be gradually reduced at a position corresponding to the surface of the plate-like member 74R that faces the plate-like member 74L, that is, the inner surface. In this case, one side of the second shaft body portion 82 is provided with a wall surface extending in the radial direction, and the wall surface abuts against the inner surface of the plate-like member 74R. That is, in this case, regarding one side of the second shaft body portion 82, the position is determined by the wall surface extending in the radial direction of the second shaft body portion 82 abutting against the inner surface of the plate-like member 74R.

[0066] Figs. 12 to 14 and Figs. 15 to 18 are schematic cross-sectional views showing modified examples of the opening shape of the through-hole 98, the shaft shape of the second shaft body portion 82, and the shape of the filling portion 104 in the present embodiment. Also, Figs. 12 to 14 and Figs. 15 to 18 are schematic cross-sectional views corresponding to the AR-AR cross-section or the AL-AL cross-section of the second shaft body portion 82 and the like. For example, as shown in Figs. 12 to 14, the opening shape of the through-hole 98 may be a rounded-corner triangle, and the second shaft body portion 82 may be a cylindrical member. In this case, the assembly positions with respect to the second bracket 72 such as the cylindrical portion 78 can be selected from three positions.

[0067] For example, the opening shape of the through-hole 98 may be a non-rounded polygon, that is, a simple polygon, or the second shaft body portion 82 may be a prismatic member. In the example shown in Figs. 15 to 18, the opening shape of the through-hole 98 is a simple quadrilateral, and the second shaft body portion 82 is a quadrangular prism member. In this case, the assembly positions with respect to the second bracket 72 such as the cylindrical portion 78 can be selected from four positions.

[0068] In addition, in this embodiment, the through hole 100 may be configured in the same manner as the through hole 98, and the third assembling structure 88 may be configured in the same manner as the second assembling structure 80. Further, the through hole provided in the first bracket 52 may be configured in the same manner as the through hole 98, and the first assembling structure 58 may be configured in the same manner as the second assembling structure 80.

[0069] In addition, the second assembling structure 80 of this embodiment can also be applied when assembling a target member supported by the second shaft body portion 82 to an assembled member having a through hole similar to the through hole 98. Note that the assembled member and the target member are arbitrary members.

[0070] Also, the second assembling structure 80 may have a configuration including only the second shaft body portion 82 and the filling portion 104 as long as the second shaft body portion 82 is supported by the assembled member.

Explanation of Reference Numerals

[0071] 72 Second bracket 78 Cylindrical portion 80 Second assembling structure 98 Through hole 99 Gap 82 Second shaft body portion 104 Filling portion C Central axis θ Rotation angle

Claims

【Claim 1】 An assembling structure for assembling a target member to an assembled member having a through hole, a shaft body portion having a shaft size smaller than the opening size of the through hole, inserted into the through hole, and supporting the target member; in the through hole, a filling portion inserted into a gap between the shaft body portion and the assembled member to fill the gap; by filling the gap with the filling portion, the shaft body portion is inserted into the through hole eccentrically from the central axis of the through hole; the shaft body portion has different eccentric directions from the central axis of the through hole according to the rotation angle of the filling portion having the central axis of the through hole as a rotation axis. An assembling structure.

Images