Fixed structure

Abstract

To stably fix an object in an inclined state to a fixing point. [Solution] When penetrated by a bolt 4, the nut has a first inclined portion 3 between the fixed point 10 and the object 20, which makes the fixed point 10 inclined relative to the object 20, and a second inclined portion 2 on the opposite side of the fixed point 10 from the object 20, which when penetrated by the bolt 4, makes the nut 4 inclined relative to the fixed point 10.

Description

[Technical Field]

[0001] The present invention relates to a fixing structure. [Background technology]

[0002] BACKGROUND ART In vehicles, units such as electrical equipment are fixed to a frame or a bracket attached to the frame (see, for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-114775 [Patent Document 2] Japanese Patent Application Publication No. 2018-47768 Summary of the Invention [Problem to be solved by the invention]

[0004] In many cases, the frame of a vehicle or a bracket attached to the frame forms a horizontal or vertical surface.

[0005] However, in vehicles, there is a need to fix units such as electrical equipment in an inclined position relative to the mounting surface for various reasons, such as improving water drainage to prevent water intrusion, facilitating wiring connections, improving assembly, and reducing vibration input.

[0006] Here, for example, by sandwiching a disk-shaped washer or spacer between the unit and the fixing surface at some of the fixing points for fixing the unit to the fixing surface, the unit can be attached to the vehicle in an inclined state. However, by sandwiching a washer or spacer between the unit and the fixing surface, the unit and the fixing surface, or the fixing bolt or nut and the fixing surface, come into partial contact rather than being in full contact, which may cause loosening or rattle.

[0007] The present invention was invented with a focus on such problems, and aims to provide a fixing structure that allows a unit to be stably attached to a vehicle in an inclined state. [Means for solving the problem]

[0008] The present invention has been made to solve at least part of the above problems, and can be realized as the following aspects or application examples.

[0009] The fixing structure according to this application example is a fixing structure for fixing an object to a fixed destination, and includes a bolt, a nut threaded onto the bolt, a first inclined portion that, when penetrated by the bolt, tilts the fixed destination between the fixed destination and the object in a state inclined relative to the object, and a second inclined portion that, when penetrated by the bolt, tilts the nut in a state inclined relative to the fixed destination on the opposite side of the object at the fixed destination.

[0010] According to this application example, the first inclined portion fixes the object in an inclined state toward the fixed destination, and the second inclined portion fixes the nut in an inclined state relative to the fixed destination, thereby enabling the object to be stably fixed in an inclined state toward the fixed destination.

[0011] In the fixing structure according to this application example, it is preferable that a first fitting portion is formed on the surface of the fixing destination facing the second inclined portion, and a second fitting portion that engages with the first fitting portion is formed on the surface of the second inclined portion facing the fixing destination.

[0012] In this case, it is possible to prevent the second inclined portion from rotating or shifting in position, and it is possible to stably fix the second inclined portion to the fixing destination.

[0013] In the fixing structure according to this application example, it is preferable that the first inclined portion is formed of an elastic member, in which case transmission of vibration to the object can be reduced or suppressed. [Effects of the Invention]

[0014] According to this embodiment, the object can be stably fixed to the fixing point in an inclined state. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a side cross-sectional view showing a state in which an electrical device is fixed to a bracket using a fixing member set according to one embodiment. FIG. [Figure 2] FIG. 2 is a perspective view showing the configuration of a first spacer of a fixing member set according to one embodiment. [Figure 3] FIG. 10 is a perspective view showing the configuration of a second spacer of a fixing member set according to one embodiment. [Figure 4] 3A and 3B are three-view diagrams of the first spacer shown in FIG. 2, in which (A) is a side view, (B) is a view seen from the arrow A in (A), and (C) is a view seen from the arrow B in (A). [Figure 5] 4A and 4B are three-view diagrams of the second spacer shown in FIG. 3, in which (A) is a side view, (B) is a view seen from the arrow A in (A), and (C) is a view seen from the arrow B in (A). [Figure 6] 1A and 1B are diagrams illustrating an example of fixing an electrical device to a vehicle using a fixing member set according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] An embodiment of the present invention will be described with reference to the drawings. This embodiment is merely an example, and is not intended to exclude various modifications or application of techniques not explicitly described in the following embodiment. Each configuration of this embodiment can be implemented with various modifications within the scope of the spirit thereof. Furthermore, it is possible to select and / or combine as needed.

[0017] [1. Configuration] Fig. 1 is a side cross-sectional view showing a state in which electrical equipment 20 is fixed to a bracket using a fixing member set 1 according to one embodiment. Fig. 2 is a perspective view showing the configuration of a first spacer 2 of the fixing member set 1 according to one embodiment, and Fig. 3 is a perspective view showing the configuration of a second spacer 3 of the fixing member set 1 according to one embodiment.

[0018] Fig. 4 is a three-view diagram of the first spacer 2 shown in Fig. 2, where (A) is a side view, (B) is a view seen from the arrow A in (A), and (C) is a view seen from the arrow B in (A). Fig. 5 is a three-view diagram of the second spacer 3 shown in Fig. 3, where (A) is a side view, (B) is a view seen from the arrow A in (A), and (C) is a view seen from the arrow B in (A).

[0019] 1 shows an example in which an electrical device 20 is fixed in an inclined state to a bracket 10 using fixing member sets 1-1 and 1-2. The bracket 10 may be fixed to, for example, the frame of a vehicle such as a truck. The electrical device 20 is an example of an object, and the bracket 10 is an example of a fixing destination.

[0020] In the electrical equipment 20 fixed to the bracket 10 in an inclined state, the side that is lower due to the inclination may be referred to as the lower inclination side, and the side that is higher due to the inclination may be referred to as the upper inclination side. In the example shown in FIG. 1, the left side of the paper is the lower inclination side, and the right side of the paper is the upper inclination side. In addition, in the example shown in FIG. 1, the lower inclination side of the electrical equipment 20 is attached to the bracket 10 using a fixing member set 1-1, and the upper inclination side is attached to the bracket 10 using a fixing member set 1-2. Hereinafter, when there is no particular need to distinguish between fixing member sets 1-1 and 1-2, they will be referred to as fixing member set 1.

[0021] 1 shows two fixing member sets 1-1 and 1-2 for convenience, but the present invention is not limited to this. One or three or more fixing member sets 1 may be used to fix the electrical equipment 20, and suitable modifications can be made.

[0022] The surface of the bracket 10 to which the electrical equipment 20 is attached may be referred to as the second bracket surface 10b. The surface of the bracket 10 opposite to the second bracket surface 10b may be referred to as the first bracket surface 10a.

[0023] The bracket 10 has one or more bracket holes 12 (two are shown in the example shown in FIG. 1) into which a bolt 4, which will be described later, can be inserted.

[0024] The fixing member set 1-1 has a first spacer 2, a second spacer 3, a bolt 4, and a nut 41. The fixing member set 1-2 has a washer 5 in addition to the first spacer 2, the second spacer 3, the bolt 4, and the nut 41.

[0025] The first spacer 2 is inserted through the bolt 4 and is interposed between the first bracket surface 10a of the bracket 10 and the nut 41. The nut 41 is threaded onto the bolt 4. The second spacer 3 is inserted through the bolt 4 and is interposed between the second bracket surface 10b of the bracket 10 and the electrical equipment 20.

[0026] In the fixing member set 1-2, a washer 5 is interposed between the second spacer 3 and the second bracket surface 10b with the bolt 4 passing through it. It is desirable to fill the gap between the horizontal surface 31 of the second spacer 3 and the second bracket surface 10b of the bracket 10, which occurs when the electrical equipment 20 is tilted, by appropriately changing the thickness and number of the washers 5.

[0027] 2 and 4(A), (B), and (C), the first spacer 2 has a cylindrical shape having a substantially circular horizontal surface 21, an inclined surface 22, and a side surface 25. The first spacer 2 is preferably made of metal.

[0028] The side surface 25 is perpendicular to the horizontal surface 21. An inclined surface 22 is formed on the side opposite to the horizontal surface 21. As shown in FIG. 4(A), the inclined surface 22 is formed to form an angle θ1 with respect to the horizontal surface 21. As a result, the side surface 25 of the first spacer 2 has portions that are higher and lower than the horizontal surface 21. The angle θ1 can be said to be the inclination angle of the first spacer 2.

[0029] In the first spacer 2, a circular bolt hole 23 is formed so as to penetrate from the center of the inclined surface 22 to the center of the horizontal surface 21. The central axis of this bolt hole 23 is perpendicular to the inclined surface 22.

[0030] The first spacer 2 is an example of a second inclined portion that, when penetrated by the bolt 4, tilts the nut 41 relative to the bracket 10 on the side opposite the electrical equipment 20 (target object) of the bracket 10 (fixed destination).

[0031] Furthermore, guide protrusions 24 are formed on the horizontal surface 21 of the first spacer 2 so as to protrude perpendicularly to the horizontal surface 21. In the example shown in Fig. 2, two rectangular pillar-shaped guide protrusions 24 are formed on the horizontal surface 21 at positions facing each other across the bolt hole 23 so as to extend parallel to each other.

[0032] A pair of guide grooves 11 are formed parallel to each other in the vicinity of the bracket hole 12 on the first bracket surface 10a of the bracket 10, at positions facing each other across the bracket hole 12. The guide grooves 11 are an example of a first fitting portion formed on the surface of the bracket 10 (fixed destination) that faces the first spacer 2 (second inclined portion).

[0033] The guide protrusions 24 have substantially the same shape as the guide grooves 11 and are formed smaller than the guide grooves 11 , so that they can be fitted into the guide grooves 11 .

[0034] The guide protrusion 24 fits into the guide groove 11 formed on the first bracket surface 10a when the horizontal surface 21 of the first spacer 2 is in contact with this first bracket surface 10a. The guide protrusion 24 is formed on the surface of the first spacer 2 (second inclined portion) that faces the bracket 10 (fixed destination), and is an example of a second fitting portion that engages with the guide groove 11 (first fitting portion).

[0035] 3 and 5(A), (B), and (C), the second spacer 3 has a cylindrical shape with a substantially circular horizontal surface 31, an inclined surface 32, and a side surface 34. The second spacer 3 is preferably made of an elastic material such as resin or rubber.

[0036] The side surface 34 is perpendicular to the horizontal plane 31. An inclined surface 32 is formed on the second spacer 3 on the side opposite to the horizontal plane 31. As shown in FIG. 5(A), the inclined surface 32 is formed to form an angle θ2 with respect to the horizontal plane 31. As a result, the side surface 34 of the second spacer 3 has portions that are higher and lower than the horizontal plane 31. The angle θ2 can be called the inclination angle of the second spacer 3. It is desirable that the angle θ2 be the same as the angle θ1.

[0037] In the second spacer 3, a circular bolt hole 33 is formed so as to penetrate from the center of the inclined surface 32 to the center of the horizontal surface 31. The central axis of this bolt hole 33 is perpendicular to the inclined surface 32.

[0038] The second spacer 3 is an example of a first inclined portion that, when penetrated by the bolt 4, tilts the bracket 10 relative to the electrical equipment 20 between the bracket 10 (fixed object) and the electrical equipment 20 (target object).

[0039] [2. Actions and Effects] When fixing the electrical equipment 20 to the bracket 10 in an inclined state, as shown in Figure 1, in the fixing member set 1-1 on the lower side of the incline, a second spacer 3 is interposed between the bottom surface of the electrical equipment 20 and the second bracket surface 10b of the bracket 10, and a first spacer 2 is interposed between the first bracket surface 10a of the bracket 10 and the nut 41.

[0040] In this case, the second spacer 3 is positioned so that its inclined surface 32 faces the bottom surface of the electrical equipment 20, its horizontal surface 31 faces the second bracket surface 10b of the bracket 10, and the lower side surface 34 faces downward in the inclination.

[0041] On the other hand, the first spacer 2 in the fixing member set 1-1 is arranged so that the horizontal surface 21 faces the first bracket surface 10a of the bracket 10 and the shorter side surface 25 faces upward inclined. Furthermore, the guide protrusion 24 formed on the horizontal surface 21 fits into the guide groove 11 formed in the first bracket surface 10a of the bracket 10.

[0042] Then, a bolt 4 inserted from inside the electrical device 20 passes through a bolt hole (not shown) formed in the bottom surface of the electrical device 20, the bolt hole 33 of the second spacer 3, the bracket hole 12 of the bracket 10, and the bolt hole 23 of the first spacer 2, in that order. A nut 41 is threaded onto the end of the bolt 4 on the opposite side from the electrical device 20, thereby fixing the electrical device 20 to the bracket 10. Note that the bolt 4 may be a stud bolt integrated into the electrical device 20, in which case the bolt 4 (stud bolt) can be inserted in the same order as above.

[0043] On the other hand, in the fixing member set 1-2 on the upper side of the incline, a disk-shaped washer 5 is placed on the second bracket surface 10b of the bracket 10, and a second spacer 3 is interposed between this washer 5 and the bottom surface of the electrical equipment 20. In addition, a first spacer 2 is interposed between the first bracket surface 10a of the bracket 10 and the nut 41.

[0044] In this case, the second spacer 3 is positioned so that its inclined surface 32 faces the bottom surface of the electrical equipment 20, its horizontal surface 31 faces the washer 5, and the lower side surface 34 faces downward in the inclination.

[0045] The height of the washer 5 is preferably the same as the difference between the distance between the bottom surface of the electrical device 20 in the fixing member set 1-2 and the second bracket surface 10b and the distance between the bottom surface of the electrical device 20 in the fixing member set 1-1 and the second bracket surface 10b, which occurs when the electrical device 20 is tilted. The height of the washer 5 may be determined depending on the tilt angle (θ2) of the second spacer 3 and the distance between the fixing member set 1-1 and the fixing member set 1-2. Alternatively, the required height of the washer 5 may be achieved by stacking multiple washers 5.

[0046] The first spacer 2 in the fixing member set 1-2 is arranged so that the horizontal surface 21 faces the first bracket surface 10a of the bracket 10 and the lower side surface 25 faces upward in the inclination. Furthermore, the guide protrusion 24 formed on the horizontal surface 21 is fitted into the guide groove 11 formed on the first bracket surface 10a of the bracket 10.

[0047] Then, a bolt 4 inserted from inside the electrical device 20 passes through a bolt hole (not shown) formed in the bottom surface of the electrical device 20, the bolt hole 33 of the second spacer 3, the hole (not shown) of the washer 5, the bracket hole 12 of the bracket 10, and the bolt hole 23 of the first spacer 2, in that order, so as to communicate with each other. A nut 41 is threaded onto the end of the bolt 4 opposite the electrical device 20, and the bolt is fixed with the seating surface of the nut 41 abutting against the inclined surface 22 of the first spacer 2. Note that in fixing member set 1-2, the bolt 4 may also be a stud bolt integrated into the electrical device 20, in which case the stud bolt can be inserted in the same order as above.

[0048] As a result, the electrical equipment 20 is fixed in an inclined state to the bracket 10. A drain hole (not shown) may be formed on the bottom surface of the electrical equipment 20 at or near the lowest position due to the inclination. This allows rainwater and the like that has entered the electrical equipment 20 to be drained through the drain hole, preventing electronic components and the like inside the electrical equipment 20 from getting wet due to water intrusion.

[0049] FIG. 6 is a diagram showing an example in which an electrical device 20 is fixed to a vehicle using a fixing member set 1 according to one embodiment.

[0050] In Figure 6, up is indicated as UP and down is indicated as DW. The vehicle is on a horizontal road surface and is in a position where the up-down direction coincides with the vertical direction (the downward direction coincides with the direction of gravity). In this position, the vertically upward direction is the height direction.

[0051] 6, a bracket 53 is fixed to a vehicle frame 51 via a bracket 52. A horizontal surface is formed on the upper surface of the bracket 53, and an example is shown in which an electrical device 20 is fixed in an inclined state on this horizontal surface using a plurality of fixing member sets 1 (1-1, 1-2).

[0052] In the example shown in FIG. 6, the electrical equipment 20 is fixed in an inclined state to the bracket 53 by the fixing member sets 1 at the four corners of the bottom surface of the electrical equipment 20.

[0053] In this way, by fixing the electrical equipment 20 to the vehicle using the fixing member set 1, the second spacer 3 makes the bracket 10 inclined with respect to the electrical equipment 20 between the bracket 10 and the electrical equipment 20. Also, the first spacer 2 makes the nut 41 inclined with respect to the bracket 10 on the side of the bracket 10 opposite to the electrical equipment 20.

[0054] As a result, the inclined surface 32 of the second spacer 3 comes into close contact with the bottom surface of the electrical equipment 20, and the horizontal surface 31 of the second spacer 3 comes into close contact with the second bracket surface 10b of the bracket 10. Furthermore, the horizontal surface 21 of the first spacer 2 comes into close contact with the first bracket surface 10a of the bracket 10, and the inclined surface 22 of the first spacer 2 comes into close contact with the seat surface of the nut 41.

[0055] In the fixing member set 1, the second spacer 3 is arranged so that the shorter side surface 34 faces downward in the inclination, and the first spacer 2 is arranged so that the shorter side surface 25 faces upward in the inclination. The inclination angles of the first spacer 2 and the second spacer 3 are formed to be equal. As a result, in the fixing member set 1, the inclined surface 32 of the second spacer 3 and the inclined surface 22 of the first spacer 2 are parallel, and the bearing surface of the nut 41 abuts parallel to the inclined surface 22 of the first spacer 2.

[0056] In the fixing member set 1-1, each member is tightly fitted without any gaps between the bottom surface of the electrical equipment 20 and the inclined surface 32 of the second spacer 3, between the horizontal surface 31 of the second spacer 3 and the second bracket surface 10b, between the first bracket surface 10a and the horizontal surface 31 of the first spacer 2, and between the inclined surface 22 of the first spacer 2 and the seat surface of the nut 41.

[0057] In addition, in the fixing member set 1-2, each member is tightly fitted without any gaps between the bottom surface of the electrical equipment 20 and the inclined surface 32 of the second spacer 3, between the horizontal surface 31 of the second spacer 3 and the washer 5, between the washer 5 and the second bracket surface 10b, between the first bracket surface 10a and the horizontal surface 31 of the first spacer 2, and between the inclined surface 22 of the first spacer 2 and the seat surface of the nut 41.

[0058] As a result, in the fixing member sets 1-1 and 1-2, the electrical equipment 20 can be stably fixed to the bracket 10 without any gaps using the bolts 4 and nuts 41, and loosening and rattle can be prevented.

[0059] Furthermore, with the horizontal surface 21 of the first spacer 2 abutting against the first bracket surface 10a, the guide protrusions 24 are fitted into the guide grooves 11 formed on this first bracket surface 10a. This prevents the first spacer 2 from rotating or shifting in position, and allows the first spacer 2 to be stably fixed to the bracket 10.

[0060] Versatility can be achieved by appropriately setting the inclination angle (θ1) of the first spacer 2 and the inclination angle (θ2) of the second spacer 3. Versatility can also be achieved by appropriately setting the size of the bolt 4.

[0061] By forming the second spacer 3 from an elastic material such as rubber or resin, it is possible to improve adhesion to the electrical equipment 20 and also to reduce or prevent transmission of vibration to electronic components mounted on the electrical equipment 20. Furthermore, by forming the first spacer 2 from metal, it is possible to prevent loosening and deterioration.

[0062] [3. Other] The configuration of the fixing member set 1 shown in the above embodiment is one example. For example, in the above embodiment, the horizontal surface 21 of the first spacer 2 is formed with a convex guide protrusion 24 as the second fitting portion, and the first bracket surface 10a of the bracket 10 is formed with a concave guide groove 11 as the first fitting portion. However, the shapes of the first fitting portion and the second fitting portion are not limited to this.

[0063] For example, the shape of the guide protrusions 24 is not limited to a square prism and can be modified as appropriate. For example, the guide protrusions 24 may have other shapes such as a cone, a square pyramid, or a hemisphere. In this case, it is desirable that a recess (guide recess) matching the shape of the guide protrusions 24 be formed on the first bracket surface 10a instead of the guide grooves 11.

[0064] Also, for example, a concave guide groove may be formed as the second fitting portion on the horizontal surface 21 of the first spacer 2, and a convex guide protrusion may be formed as the first fitting portion on the first bracket surface 10a of the bracket 10.

[0065] In the above-described embodiment, an example is shown in which the first spacer 2 is made of metal and the second spacer 3 is made of an elastic material, but this is not limited to this and can be modified as appropriate.

[0066] Furthermore, in the above-described embodiment, an example has been shown in which the electrical equipment 20 is fixed to the bracket 10, but the present invention is not limited to this. For example, the fixing member set 1 may be used to fix a unit other than the electrical equipment 20 to the bracket 10. Furthermore, the fixing member set 1 may be used to fix the electrical equipment 20 or a unit other than the electrical equipment 20 to a fixing surface other than the bracket 10, such as a vehicle frame.

[0067] [4. Notes]

[0068] (Appendix 1) A fixing structure for fixing an object to a fixing point, Bolt and a nut threaded onto the bolt; a first inclined portion that, when penetrated by the bolt, causes the fixed destination to be inclined with respect to the object between the fixed destination and the object; a second inclined portion that inclines the nut with respect to the fixed portion when the nut is inserted by the bolt, on the opposite side of the fixed portion from the object; A fixing structure comprising:

[0069] (Appendix 2) a first fitting portion is formed on a surface of the fixing destination facing the second inclined portion, A second fitting portion that engages with the first fitting portion is formed on a surface of the second inclined portion that faces the fixed destination. 2. The fixing structure of claim 1,

[0070] (Appendix 3) The first inclined portion is formed of an elastic member. 3. The fixing structure according to claim 1 or 2, [Explanation of symbols]

[0071] 1-1, 1-2, 1 Fixing member set 2 First spacer (second inclined portion) 21 horizontal plane 22 Slope 23 bolt holes 24 Guide protrusion (second fitting part) 25 Side 3 Second spacer (first inclined part) 31 horizontal plane 32 Slope 33 bolt holes 34 Side 4 bolts 5 washers 10, 52, 53 Bracket (fixed to) 10a First bracket surface 10b Second bracket surface 11 Guide groove (first fitting portion) 12 Bracket holes 20 Electrical equipment (object) 41 Nut 51 frames

Claims

[Claim 1] A fixing structure for fixing an object to a fixing point, Bolt and a nut threaded onto the bolt; a first inclined portion that, when penetrated by the bolt, causes the fixed destination to be inclined with respect to the object between the fixed destination and the object; a second inclined portion that inclines the nut with respect to the fixed portion when the nut is inserted by the bolt, on the opposite side of the fixed portion from the object; A fixing structure comprising:

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