JP4480499B2 - Power supply for vehicle - Google Patents

Description

  The present invention relates to a power supply device mounted on a vehicle such as an automobile, and more particularly to a power supply device in which resin parts are fixed to a base portion with screws so as not to be loosened.

  A power supply device mounted on an automobile incorporates a battery that drives a motor that drives the automobile. This power supply device is fixed to the vehicle with screws and nuts so that it can be detached in order to maintain the built-in battery and electronic equipment. This power supply device can be disassembled by removing screws during maintenance. In particular, since it is necessary to replace the battery if it fails, the holder case that houses the battery needs to have a structure that can be disassembled. Further, since the power supply device mounted on the vehicle needs to be as light as possible, plastic resin parts that are lighter than metal are used. However, when resin parts are fastened and fixed with screws or the like, there is a drawback that they become easy to loosen over time. In particular, automobiles are prone to loosening due to severe temperature changes and vibrations. FIG. 1 shows a state where the screw 23 fixing the resin component 22 to the base portion 21 is loosened. In this figure, the screw 23 is initially completely tightened. However, the resin component 22 expands and contracts due to repetition of low and high temperatures and due to vibration, and a gap is formed between the screw head 23A and the resin component 22 and is easily loosened. If the vehicle travels further in this state and receives vibration, the screw 23 further loosens.

In order to prevent the screws and nuts from loosening, a lock structure is adopted in which a split pin is inserted through the screw head or nut. However, the screws and nuts of this structure have the drawback that it takes a lot of effort to attach and detach because the split pin is removed when loosened and the split pin is set when fixed. For this reason, it is used only for parts that are extremely important for automobiles, such as suspensions and handle links. In order to easily attach and detach screws and nuts, lock nuts having various structures have been developed (see Patent Document 1).
Japanese Patent Laid-Open No. 7-151129

  As described in this publication, the lock nut having the locking structure has a complicated overall structure. For this reason, compared with a normal screw and nut, manufacturing cost becomes very high. Further, since a plurality of parts are used and tightened in a predetermined order, there is a drawback that it takes time and labor to tighten and remove.

  Furthermore, even if the power supply device for a vehicle is tightened so as not to be loosened by using a lock nut having a locking structure, a gap is formed when the resin part is lost due to vibration or temperature change. The gap causes vibration and noise, damages electronic components and batteries, and generates unpleasant noise in the vehicle.

  The present invention has been developed for the purpose of solving such drawbacks. An important object of the present invention is to provide a power supply device for a vehicle that has a very simple structure, can effectively prevent loosening of a tightening portion with respect to a temperature change, and can firmly fix a resin component to a base portion. .

  A power supply device for a vehicle according to the present invention is inserted into a base part 1 mounted on a vehicle, a resin part 2 having a through hole 5 fixed to the base part 1, and an inner surface of the through hole 5 of the resin part 2. At the same time, the metal sleeve 4 having a flange 4A on the surface facing the base portion 1 and the metal sleeve 4 inserted through the through hole 5 of the resin component 2 are inserted into the resin component 2 via the metal sleeve 4. And a metal screw 3 for fixing the screw to the base portion 1. The base portion 1 has a female screw material 6 into which the tip end portion of the metal screw 3 is screwed, and a support material 13 is disposed on the surface facing the metal sleeve 4. In this power supply device, the metal screw 3 is inserted into the metal sleeve 4 and the screw portion 3B at the tip is screwed into the female screw material 6, and the metal sleeve 4 is fixed to the base portion 1 with the metal screw 3 and the resin component 2 is fixed to the base portion. 1 is fixed.

  In the power supply device for a vehicle according to the present invention, the base portion 1 includes a female screw member 6 and a base plate 11 that fixes the female screw member 6. The female screw member 6 is interposed via a rubber-like elastic body 7. Can be fixed to the base plate 11.

  In the power supply device for a vehicle according to the present invention, a base portion 1 is ring-welded to a base plate 11 and a rubber nut 9 in which a metal outer cylinder 8 is fixed to an outer side of a female screw member 6 via a rubber-like elastic body 7. And a screw tube 12 for fixing the rubber nut 9. In this power supply device, a male screw is provided on the outer periphery of the metal outer cylinder 8 of the rubber nut 9, a female screw is provided on the inner peripheral surface of the screw cylinder 12, and the male screw of the rubber nut 9 is connected to the female of the screw cylinder 12. The rubber nut 9 can be connected to the base plate 11 by screwing into a screw.

  In the power supply device for a vehicle of the present invention, the resin component 2 can be a battery holder case 10 containing a plurality of batteries.

  In the power supply device for a vehicle according to the present invention, the length of the metal sleeve 4 is made substantially equal to the length of the through-hole 5 in which the metal sleeve 4 is disposed, and the metal sleeve 4 and the resin component 2 are connected by the metal screw 3. Both can be clamped and fixed to the base portion 1.

  The power supply device for a vehicle according to the present invention can dispose the hard ring 13A between the metal sleeve 4 and the base portion 1 so that the hard ring 13A is brought into contact with the flange 4A.

  The power supply device for a vehicle according to the present invention accommodates the holder case 10 in the outer case 14, and the outer case 14 is sandwiched between the hard ring 13A inserted through the metal screw 3 and the rubber nut 9, and the base portion 1 can be fixed.

  Further, the power supply device for a vehicle according to the present invention is provided with a foreign substance intrusion prevention wall 18 protruding from the inner surface of the outer case 14, and the holder case 10 is accommodated inside the foreign substance intrusion prevention wall 18, 18 can prevent foreign matter from entering.

  The power supply device according to the present invention has an extremely simple structure and can effectively prevent the metal screw from loosening with respect to a temperature change and firmly fix the resin component to the base portion. The power supply device of the present invention inserts a metal sleeve with a flange into the through hole of the resin part, inserts a metal screw into the metal sleeve, and clamps the metal sleeve to fix the resin part to the base part. Because it is. The thermal expansion of the metal is smaller than that of the synthetic resin, and the thermal expansion of the metal sleeve is smaller than that of the resin part. For this reason, the deformation amount due to temperature change of the metal sleeve is small compared with the resin part, and even if the resin part repeats thermal expansion and thermal contraction due to temperature change, the metal sleeve has little thermal expansion, and the metal sleeve Is firmly clamped between the metal screw and the base. Therefore, according to the present invention, it is possible to effectively prevent the metal screw from loosening with respect to a temperature change and firmly fix the resin component to the base portion.

  Furthermore, in the power supply device of the present invention, a flange is provided on the surface facing the base portion of the metal sleeve, and the resin component is fixed to the base portion with a metal screw in a state where the flange is brought into contact with the support member of the base portion. The flange of the metal sleeve contacts the support material over a wide area. For this reason, the support member presses and fixes the metal sleeve with uniform pressure. For this reason, the metal sleeve is sandwiched by the support material, and there is no local unbalanced pressing force, the posture is not unreasonable, the metal sleeve is not misaligned, etc. A metal sleeve and a resin part can be clamped in an ideal state with a material and a metal screw and fixed to the base part.

  Embodiments of the present invention will be described below with reference to the drawings. However, the following embodiment exemplifies a power supply device for a vehicle for embodying the technical idea of the present invention, and the present invention does not specify the power supply device as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  In the vehicle power supply device shown in FIGS. 2 to 7, a resin component 2 that is a holder case 10 is fixed on a base portion 1 with a metal screw 3. The illustrated resin component 2 is a plastic holder case 10 that houses a plurality of battery modules (not shown). In the illustrated power supply apparatus, holder cases 10 are stacked in two stages as resin parts 2 and fixed to a base portion 1. In each holder case 10, the upper case 10A and the lower case 10B hold the battery module sandwiched from above and below. Therefore, the resin component 2 is a holder case 10 divided into four layers and stacked. Each holder case 10 is integrally formed of plastic. The holder case 10 which is the resin component 2 is a plastic reinforced by embedding reinforcing fibers such as glass fibers. However, the resin parts can be molded from plastic that does not embed reinforcing fibers. The resin component is a thermosetting or thermoplastic plastic and can be molded with a sufficient strength by being mounted on a vehicle.

  5 and 6 are enlarged cross-sectional views of a portion where the metal screw 3 fixes the holder case 10 of the resin component 2 to the base portion 1. FIG. 5 shows the lower end of the metal screw 3, and FIG. 6 shows the upper end of the metal screw 3. In this power supply device, the lower end, which is the tip of the metal screw 3, is screwed into the female screw material 6 of the base portion 1, and the resin component 2 is fixed to the base portion 1 with the metal screw 3. The metal screw 3 has a tip portion screwed into the female screw material 6 and the resin part 2 is fixed to the base portion 1 with a screw head 3A.

  The power supply device shown in FIGS. 2 to 7 includes a base part 1 mounted on a vehicle, a resin part 2 having a through hole 5 fixed to the base part 1, and an inner surface of the through hole 5 of the resin part 2. The resin component 2 is inserted through the metal sleeve 4 that is fixed and has the flange 4A on the surface facing the base portion 1 and the metal sleeve 4 that is fixed to the through hole 5 of the resin component 2. Is provided with a metal screw 3 for fixing the to the base portion 1.

  The base portion 1 shown in the sectional views of FIGS. 3 and 5 includes a base plate 11 that is formed of parts different from the vehicle main body and is fixed to the vehicle main body. This base plate 11 can also be comprised with the parts which comprise a part of vehicle. The base plate 11 is a metal plate that is fixed to the chassis of the vehicle. In the base portion 1, the female screw material 6 is fixed to the base plate 11 via a rubber-like elastic body 7. Further, in the base portion 1 of FIG. 5, a metal outer cylinder 8 is fixed to the outside of the female screw material 6 via a rubber-like elastic body 7 to form a rubber nut 9. The rubber nut 9 is screwed into a screw cylinder 12 fixed to the base plate 11 and is fixed to the base portion 1. The screw cylinder 12 has a closed bottom, and the closed bottom is welded to the surface of the base plate 11 and fixed. The screw cylinder 12 of FIG. 5 is provided with a ridge 12 </ b> A in a ring shape at the lower end, and the ridge 12 </ b> A is ring-welded and fixed to the upper surface of the base plate 11. With this structure, the screw cylinder 12 can be firmly and firmly fixed to the base plate 11. The rubber nut 9 is provided with a male screw on the outer periphery of the metal outer cylinder 8. The screw cylinder 12 is provided with a female screw on the inner peripheral surface. The rubber nut 9 is screwed into the screw cylinder 12, the rubber nut 9 is connected to the base plate 11, and the female screw material 6 is connected to the base plate 11 via the rubber-like elastic body 7.

  With the above structure, the female screw material 6 to be connected by screwing the metal screw 3 can be firmly connected to the base plate 11 via the rubber-like elastic body 7. The rubber-like elastic body 7 is an insulating material. Therefore, the metal screw 3 is insulated by the rubber-like elastic body 7 and can be firmly connected to the metal base plate 11. The metal sleeve 4 that contacts the metal screw 3 is also firmly fixed to the base plate 11 in an insulated state. This is because the metal screw 3 with which the metal sleeve 4 contacts is insulated and fixed to the base plate 11. In the power supply device using the resin component 2 as the holder case 10, it is important to fix the metal screw 3 and the metal sleeve 4 to the base plate 11 in an insulated state. This is because even if the battery stored in the holder case 10 contacts the metal sleeve 4 or the metal screw 3, the vehicle chassis is not energized, and a failure such as a short circuit can be prevented. Further, the structure in which the female screw material 6 is fixed to the base plate 11 via the rubber-like elastic body 7 has a feature that the rubber-like elastic body 7 can absorb the vibration of the base portion 1. This is because the rubber-like elastic body 7 having a buffering action absorbs the vibration of the base portion 1 and does not vibrate the metal screw 3 and the holder case 10. For this reason, even if the chassis of a vehicle vibrates, there exists the feature which can reduce the vibration of the holder case 10 and the battery module accommodated in this.

  The base portion 1 has a support member 13 disposed on the surface facing the metal sleeve 4. This is because the support member 13 is brought into contact with the flange 4A of the metal sleeve 4 so that the metal sleeve 4 is firmly clamped and held. The base part 1 of FIG. 5 uses the support member 13 as a hard ring 13A. The hard ring 13A is made of a hard plastic that is not deformed by a pressure for fastening the metal screw 3, for example, an engineering plastic such as a polyamide resin or a polyacetal resin. The hard ring 13A is manufactured by molding these plastics into a ring shape. However, the hard ring 13A can be manufactured by processing a metal into a ring shape.

  Further, in the power supply device of FIG. 3, the holder case 10 that is the resin component 2 is housed in an outer case 14 made of plastic and fixed on the base portion 1. In this power supply device, a plastic outer case 14 is fixed on a base plate 11 made of a metal plate, and a holder case 10 is accommodated in the outer case 14. The outer case 14 is fixed to the base plate 11 with a metal screw 3 that fixes the holder case 10 that is the resin component 2. The structure for fixing the outer case 14 to the base plate 11 is shown in the sectional view of FIG. In the fixing structure shown in this figure, an outer case 14 is sandwiched between a hard ring 13 </ b> A that is a support member 13 and a rubber nut 9, and is fixed to a base plate 11. The outer case 14 is provided with a connection hole 14A through which the metal screw 3 is passed. The connecting hole 14A has such a size that a convex ring 13a provided so as to protrude downward on the inner periphery of the hard ring 13A can be inserted. Further, in the connection structure of FIG. 3, an O-ring 15 is sandwiched between the outer case 14 and the hard ring 13A. The O-ring 15 connects the lower surface of the outer case 14 to the base portion 1 with a watertight structure. Therefore, this structure can reliably prevent water from entering the outer case 14 from the connecting portion to the base portion 1.

  The metal sleeve 4 is manufactured by processing a metal such as iron or an iron alloy into a cylindrical shape and plating the surface with a metal such as chrome, tin, or zinc. However, the metal sleeve can be made of any metal having a thermal expansion smaller than that of the resin component, for example, a metal such as stainless steel, Shinchu, copper or copper alloy, or aluminum or aluminum alloy.

  The metal sleeve 4 is provided with a flange 4 </ b> A on the surface facing the base portion 1. The holder case 10 of the resin component 2 is provided with a recess 5A in which the flange 4A is inserted around the through hole 5. In the illustrated metal sleeve 4, the flange 4 </ b> A is provided only on the surface facing the base portion 1, but the flange can also be provided on the upper end sandwiched by the screw head 3 </ b> A. The flange 4A uniformly contacts the surface of the support member 13 over a wide area. For this reason, the metal sleeve 4 having the flange 4A is pressed against the support member 13 with a uniform pressure, and is stably and firmly fixed without being displaced.

  The metal sleeve 4 has a thickness that does not deform when the metal screw 3 is tightened. The tightening force varies depending on the thickness of the screw portion 3B of the metal screw 3. Accordingly, the thickness of the metal sleeve 4 also differs depending on the thickness of the screw portion 3B inserted through the inside, and when the screw portion becomes thicker and the inner diameter of the metal sleeve becomes larger, the metal sleeve 4 becomes thicker. When it becomes smaller, it becomes thinner. In addition, since the strength of the metal sleeve 4 varies depending on the material, the metal sleeve 4 has an optimum thickness in consideration of the material. For example, in the iron metal sleeve 4, the thickness is set to 1 to 4 mm. However, the metal sleeve should be thick and strong even when it is long. Although the metal sleeve 4 has a cylindrical shape, it is not always necessary to have a cylindrical shape. For example, the metal sleeve 4 may have a polygonal column shape.

  The metal sleeve 4 is press-fitted into the through hole 5 of the resin component 2 and fixed to the resin component 2. With this structure, the metal sleeve 4 can be easily fixed to the resin component 2. The metal sleeve 4 has a slightly larger outer shape than the inner shape of the through hole 5 of the resin component 2, and is thicker in other words. The metal sleeve 4 is firmly pressed into the resin component 2. This is because the inner surface of the through hole 5 is pressed against the surface of the metal sleeve 4 in a pressed state. The metal sleeve 4 can also be firmly fixed by press-fitting into the through hole 5 via an adhesive. Further, the metal sleeve can be inserted and fixed when the plastic of the resin part is molded. The metal sleeve is temporarily fixed to a mold for molding a resin part with plastic, and is inserted into and fixed to the plastic for molding the resin part. The metal sleeve that is inserted and fixed in the resin part is provided with irregularities on the outer surface and is fixed to the resin part so as not to come off.

  Since the metal sleeve 4 fixed to the resin component 2 has an integral structure with the resin component 2, it can be assembled conveniently. However, the metal sleeve is not necessarily fixed to the resin part. This is because, as shown in FIG. 3, both the metal sleeve 4 and the resin component 2 can be sandwiched and fixed at both ends to fix the resin component 2 to the base portion 1. The resin component 2 shown in these drawings has a structure in which the metal sleeve 4 can be clamped by the metal screw 3 with the metal sleeve 4 as the length of the through hole 5. This structure can fix the resin component 2 to the base portion 1 while preventing the metal screw 3 from being loosened by the metal sleeve 4.

  Ideally, as shown in FIGS. 5 and 6, the metal sleeve 4 is fixed to the resin component 2 with a structure such as press-fitting, bonding, or insert, so as to be equal to the length of the through hole 5. In this structure, both the resin part 2 and the metal sleeve 4 are sandwiched and fixed by the metal screw 3 and the base part 1, and further fixed to the resin part 2 by the metal sleeve 4. According to this structure, the resin component 2 can be fixed to the base portion 1 in an ideal state. This is because the resin component 2 repeats thermal expansion and contraction to form a gap between the metal screw 3 and the base portion 1, or the resin component 2 is not sandwiched between the metal screw 3 and the base portion 1 with sufficient strength. This is because the metal screw 3 firmly fixes the metal sleeve 4 to the base portion 1 and fixes the resin component 2 to the base portion 1 through the metal sleeve 4 even when the state is in a state.

  The metal screw 3 of FIG. 6 presses and fixes the metal sleeve 4 and the resin component 2 with the screw head 3A at the rear end. The metal screw 3 is fixed to the base portion 1 by rotating the screw head 3A at the rear end and screwing the male screw at the tip of the screw portion 3B into the female screw material 6. However, the metal screw does not necessarily have a structure in which a screw head is provided. For example, although not shown, a male screw may be provided at both ends, and a nut may be screwed into a male screw at the rear end to sandwich the metal sleeve. it can. The metal screw can be fixed to the base part by screwing a nut into the male screw at the rear end after the male screw at the front end is screwed into the female screw member and connected to the base part. Alternatively, the resin component can be fixed to the base portion by screwing the male screw at the tip into the female screw material while the nut is screwed into the male screw at the rear end.

  The metal screw 3 in FIG. 6 sandwiches the metal sleeve 4 via a washer 16. The washer 16 is a metal flat washer. The outer shape of the washer 16 is larger than that of the screw head 3 </ b> A, and is fixed to the base portion 1 by pressing the surfaces of the metal sleeve 4 and the resin component 2 with a flat washer.

  In the above connection structure, the support member 13 is a hard ring 13A, and the outer case 14 is sandwiched and fixed by the hard ring 13A and the rubber nut 9, but the power supply device of the present invention sandwiches the outer case. The holder case, which is a resin component, can be fixed to the base portion by placing the hard ring of the support material on the rubber nut and bringing the metal sleeve into contact with the hard ring. Moreover, the power supply device of this invention can also fix a resin component to a base part, without using a rubber-made nut. In this connection structure, a female plate is provided with a female screw hole in a base plate of a metal plate, and the base plate is used as a support material. A metal screw is screwed into the female screw hole, and the metal sleeve is sandwiched and fixed between the screw head of the metal screw and the base plate of the support material. It is also possible to fix a metal nut to the base portion, configure the female screw material and the support material with the metal nut, and screw the metal screw into the metal nut to fix the resin component to the base portion.

  4 is a lateral end view of the power supply device shown in FIG. In the power supply device of this figure, an outer case 14 is fixed on a base plate 11 and a holder case 10 is accommodated in the outer case 14. The outer case 14 incorporates not only the holder case 10 but also an electronic circuit 17 and the like for controlling charging / discharging of the battery as shown by a chain line in the figure. The outer case 14 shown in the figure has a space in which the electronic circuit 17 is built in the side portion of the holder case 10. In the outer case 14 having this structure, the holder case 10 as the resin component 2 is set at a predetermined position and fixed to the base plate 11 of the base portion 1 with the metal screw 3. Then, the predetermined position of the holder case 10 is connected with a screw. Thereafter, the upper opening of the outer case 14 is closed with the upper lid 19. When performing these operations, the screw may fall into the outer case 14 by mistake. This screw may enter between the lower surface of the holder case 10 and the outer case 14. Screws that have entered here cannot be easily removed. In particular, after the holder case 10 is fixed to the outer case 14 with the metal screw 3, it is particularly difficult to remove. However, the screw that has entered here causes short-circuiting due to contact with the metal part, and also causes vibration and noise, so it must be reliably removed.

  In order to prevent this problem, the outer case 14 shown in FIGS. 4 and 7 protrudes from the inner surface of the outer case 14 to provide a foreign matter intrusion prevention wall 18, and the holder case 10 is accommodated inside the foreign matter intrusion prevention wall 18. ing. As shown in the enlarged end view of FIG. 7, the foreign matter intrusion prevention wall 18 approaches the outer surface of the holder case 10 that is the resin component 2 so that foreign matter does not enter between the holder case 10 and the outer case. This structure prevents a foreign object such as a screw from entering the space where the electronic circuit 18 is mounted from entering under the holder case 10 that is difficult to remove. Therefore, even if a screw or the like is accidentally dropped into the outer case 14, it can be easily removed.

It is sectional drawing which shows the principle which the screw which fixes a resin component to a base part loosens. It is a top view which shows the internal structure of the power supply device for vehicles concerning one Example of this invention. It is a longitudinal cross-sectional view of the power supply device for vehicles concerning one Example of this invention, Comprising: It is a figure corresponded in the AA line cross section of FIG. FIG. 3 is an end view taken along the line BB of the vehicle power supply device shown in FIG. 2. It is an expanded sectional view which shows the connection structure of the metal screw and base part of the power supply device for vehicles shown in FIG. It is an expanded sectional view which shows the screw head part of the metal screw of the power supply device for vehicles shown in FIG. It is a principal part enlarged view of the power supply device for vehicles shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Base part 2 ... Resin part 3 ... Metal screw 3A ... Screw head 3B ... Screw part 4 ... Metal sleeve 4A ... Flange 5 ... Through-hole 5A ... Recess 6 ... Female thread material 7 ... Rubber-like elastic body 8 ... Metal outer cylinder DESCRIPTION OF SYMBOLS 9 ... Rubber nut 10 ... Holder case 10A ... Upper case 10B ... Lower case 11 ... Base plate 12 ... Screw cylinder 12A ... Convex strip 13 ... Support material 13A ... Hard ring 13a ... Convex ring 14 ... Outer case 14A ... Connection hole 15 ... O-ring 16 ... Washer 17 ... Electronic circuit 18 ... Foreign object intrusion prevention wall 19 ... Upper lid 21 ... Base part 22 ... Resin part 23 ... Screw 23A ... Screw head

Claims (8)

A base part (1) mounted on a vehicle, a resin part (2) having a through hole (5) fixed to the base part (1), and an inner surface of the through hole (5) of the resin part (2) A metal sleeve (4) having a flange (4A) on the surface facing the base portion (1) and a metal sleeve (4) inserted through the through hole (5) of the resin component (2) And a metal screw (3) for fixing the resin part (2) to the base part (1) via the metal sleeve (4),
The base portion (1) has a female screw material (6) into which the tip of the metal screw (3) is screwed, and a support material (13) is disposed on the surface facing the metal sleeve (4),
Insert the metal screw (3) into the metal sleeve (4), screw the screw (3B) at the tip into the female screw material (6), and use the metal screw (3) to attach the metal sleeve (4) to the base (1). A power supply device for a vehicle in which a resin part (2) is fixed and fixed to a base part (1).   The base part (1) includes a female screw material (6) and a base plate (11) that fixes the female screw material (6), and the female screw material (6) has a rubber-like elastic body (7). The vehicle power supply device according to claim 1, wherein the power supply device is fixed to the base plate (11). The base part (1) is attached to the base plate (11) and the rubber nut (9) that fixes the metal outer cylinder (8) to the outside of the female thread material (6) via the rubber-like elastic body (7). A screw tube (12) for fixing a rubber nut (9) fixed by ring welding;
The rubber nut (9) is provided with a male screw on the outer periphery of the metal outer cylinder (8), the screw cylinder (12) is provided with a female screw on the inner peripheral surface, and the male screw of the rubber nut (9) is provided. The vehicle power supply device according to claim 2, wherein the rubber nut (9) is connected to the base plate (11) by being screwed into the female screw of the screw cylinder (12).   The vehicle power supply device according to claim 1, wherein the resin component (2) is a battery holder case (10) containing a plurality of batteries.   The total length of the metal sleeve (4) is approximately equal to the length of the through-hole (5) that arranges it inside, and the metal screw (3) connects both the metal sleeve (4) and the resin part (2). The power supply device for a vehicle according to claim 1, wherein the power supply device is sandwiched and fixed to the base portion (1).   2. A vehicle according to claim 1, wherein a hard ring (13A) is disposed between the metal sleeve (4) and the base portion (1), and the hard ring (13A) is in contact with the flange (4A). Power supply.   The holder case (10) is housed in the outer case (14), and this outer case (14) is clamped with a hard ring (13A) inserted through the metal screw (3) and a rubber nut (9). The power supply device for vehicles according to claim 3 and 6, which is fixed to the base portion (1). A foreign matter intrusion prevention wall (18) is provided to protrude from the inner surface of the outer case (14), and the holder case (10) is accommodated inside the foreign matter intrusion prevention wall (18), so that the foreign matter intrusion prevention wall (18). The power supply device for a vehicle according to claim 7, which prevents entry of foreign matter.

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