JP5377208B2 - Fuse unit protective cover - Google Patents

Description

  The present invention relates to a fuse unit protective cover for protecting a fuse or the like by covering a fuse unit connected to a battery post of an automobile.

  The fuse unit is connected to a battery post of the battery in order to supply battery power to various electrical components. In the fuse unit, the terminal connection part and the fuse are exposed, and it is necessary to insulate, waterproof and dust-proof them. For this reason, a fuse unit protective cover that covers the upper part of the fuse unit is used.

  FIG. 8 shows a conventional fuse unit protective cover 100 described in Patent Document 1. As shown in FIG. The fuse unit protective cover 100 has a structure in which a first cover 110 and a second cover 120 are connected via a hinge portion 130, and is attached to the fuse unit so as to cover an upper portion of the fuse unit.

  The first cover 110 is formed in a box shape having an open bottom surface in which both side wall portions 112 are suspended from the upper wall portion 111, and the second cover 120 is also formed on both side wall portions 122 and rear side wall portions (not shown) from the upper wall portion 121. ) Is formed in a box shape with an open bottom surface. Lock convex portions 115 are formed on the outer surfaces of the side wall portions 112 on both sides of the first cover 110. By engaging the lock convex portions 115 with concave portions of a fuse unit (not shown), the first cover 110 is fixed to the fuse unit. Fixed to.

  The second cover 120 is rotatable with respect to the first cover 110 around the hinge portion 130, and the second cover 120 is opened by this rotation. The opening of the second cover 120 is performed by lifting the second cover 120 upward as indicated by the arrow X. By opening the second cover 120, the terminal connection portion and the fuse of the fuse unit are exposed, so that the status of the fuse unit can be confirmed and maintained.

  In the fuse unit protective cover 100 shown in FIG. 8, the hinge part 130 connecting the first cover 110 and the second cover 120 is thin, and the upper wall part 111 of the first cover 110 and the upper part of the second cover 120 are thin. It is provided at a position lower than the wall 121. In addition, the hinge part 130 has a structure in which a thin continuous part 140 is integrally provided. With this structure, when the second cover 120 is rotated, the second cover does not interfere with the wall of the battery to which the fuse unit is mounted, and the opening operation of the second cover 120 is smoothly performed. It is possible to do.

JP 2002-289171 A

  However, in the conventional fuse unit protective cover 100, when the second cover 120 is opened, a load in the torsional direction indicated by the arrow Y is applied to the hinge part 130. It is easily damaged. Then, there is a problem that the second cover 120 is separated from the first cover 110 due to the damage of the hinge part 130.

  Moreover, in the conventional fuse unit protective cover 100, even if the second cover 120 is opened, the open state cannot be maintained. For this reason, it is necessary to hold the opened second cover 120 by hand, and there is a problem that it is difficult to perform operations such as maintenance.

  Therefore, the present invention prevents the breakage of the hinge portion when the door is opened, prevents the second cover from being dispersed, and can maintain the opened state of the second cover, facilitating maintenance and the like. An object of the present invention is to provide a fuse unit protective cover that can be used.

  According to the first aspect of the present invention, the first cover and the second cover are connected via the first hinge part to cover the upper part of the fuse unit, and the first cover and the center around the first hinge part. A fuse unit protective cover in which the second cover is rotated relative to each other to enable the opening operation of the second cover, and the second cover is connected to one of the first cover and the second cover. A contact plate that is connected via a hinge portion and rotates about the second hinge portion to contact the outer surfaces of both the first cover and the second cover; the contact plate; One cover and the second cover are provided on the other cover, and are engaged with each other by contact of the contact plate with the outer surfaces of the first cover and the second cover. Said A fuse unit protective cover and an engaging member for holding the door open state of the second cover.

  The invention according to claim 2 is the fuse unit protective cover according to claim 1, wherein the first hinge portion is provided on an upper wall portion of the first cover and the second cover, and the contact plate The engaging member is a fuse unit protective cover provided on side walls on both sides of the first cover and the second cover.

  The invention according to claim 3 is the fuse unit protective cover according to claim 1 or 2, wherein the engaging member is provided on the contact plate or the other cover, and the first hinge portion is centered. A fuse unit protective cover formed by an arc-shaped slit and a boss provided in the other cover or the contact plate so as to correspond to the slit and slidably inserted into the slit. is there.

  According to a fourth aspect of the present invention, there is provided the fuse unit protective cover according to the third aspect, wherein the boss is locked at a position corresponding to the end point of the opening operation of the second cover in the slit to be fully opened. It is a fuse unit protective cover in which a locking projection for maintaining the door state is formed.

  According to the first aspect of the present invention, the contact plate connected via the second hinge portion of either the first cover or the second cover rotates, so that the first cover and the second cover are rotated. It will be in the state contact | abutted on both the outer surfaces of the cover. Since the contact plate is in contact with the outer surfaces of both the first cover and the second cover in this way, the first cover and the second cover are supported by the contact plate, so that the torsion between these covers is suppressed. Thus, torsion to the first hinge portion connecting the first cover and the second cover is suppressed. Accordingly, even if the second cover is rotated around the first hinge portion to open the door, the load on the first hinge portion due to torsion is suppressed, so that the first hinge portion is not damaged. . Thereby, the 2nd cover connected with the 1st cover via the 1st hinge part does not become separated from the 1st cover.

  According to the first aspect of the present invention, the engaging members provided on the contact plate and the first cover or the other cover of the second cover are the outer surfaces of the first cover and the second cover of the contact plate. Are engaged with each other, and the open state of the second cover is maintained in this engaged state. For this reason, it is not necessary to hold the opened second cover by hand. Thereby, operations such as maintenance can be easily performed.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the contact plate is provided on the side wall portions on both sides of the first cover and the second cover, so that the first cover and the second cover are provided. Abut against the outer surface of both sides. That is, the abutting plate abuts against these covers while sandwiching the first cover and the second cover. For this reason, the torsion between the 1st cover and the 2nd cover can be controlled more certainly, damage to the 1st hinge part by torsion can be prevented, and the secrecy of the 2nd cover is lost. According to the second aspect of the present invention, since the engaging members are provided on the side wall portions on both sides of the first cover and the second cover, they are engaged from both sides of the first cover and the second cover. For this reason, the open state of the second cover can be more reliably maintained.

  According to the third aspect of the present invention, in addition to the effects of the first and second aspects, the engaging member is slidably inserted into the arc-shaped slit centered on the first hinge portion. Therefore, the second cover can be smoothly rotated around the first hinge portion. Further, since the friction force is generated between the boss and the slit by inserting the boss into the slit, the open state of the second cover can be maintained by the friction force. Thus, by forming the engaging member by the slit and the boss, the engaging member can be made simple in structure.

  According to the invention described in claim 4, in addition to the effect of the invention described in claim 3, the locking projection is formed at a position corresponding to the end point of the opening state of the first cover in the slit. The part is locked to the boss. This fixes the sliding of the boss in place. For this reason, the maximum door opening state of the second cover is stably maintained. Further, since the lock protrusions formed on the contact plate and the second cover engage with the other side by the contact of the contact plate, the contact state of the contact plate can be reliably maintained.

It is a top view of fuse unit protection cover 1 of one embodiment of the present invention. (A) is a perspective view of the fuse unit protective cover 1, and (b) is an enlarged perspective view of a portion B in (a). It is an enlarged plan view of the A section in FIG. It is a perspective view of the state where contact plate 4 was contacted. (A) is the side view of the state which contact | abutted the contact plate 4, (b) is the top view, (c) is an enlarged plan view of the C section in (b). (A) is a perspective view before opening the 2nd cover 3, (b) is a perspective view in the state where the 2nd cover 3 was opened. (A) is a side view which shows the state which opened the 2nd cover 3, (b) is an enlarged side view of the B section in (a). It is a perspective view which shows the conventional fuse unit protective cover 100. FIG.

  The present invention will be specifically described with reference to embodiments shown in the drawings. 1 to 7 show a fuse unit protective cover 1 according to an embodiment of the present invention, FIG. 1 is a plan view, FIG. 2 is a perspective view and a partially enlarged perspective view before abutting plates are brought into contact, and FIG. 1 is an enlarged plan view of a portion A in FIG. 1, FIG. 4 is a perspective view of a state in which the contact plate is brought into contact, and FIG. FIG. 6 is a perspective view before opening the second cover and a perspective view in the opened state, and FIG. 7 is a side view and a partially enlarged perspective view in the state in which the second cover is opened.

  The fuse unit protective cover 1 (hereinafter referred to as protective cover 1) of this embodiment includes a first cover 2, a second cover 3, a contact plate (contact cover) 4, and an engagement member 5. The whole is made of a heat resistant resin.

  The first cover 2 and the second cover 3 are connected via a first hinge part 7, and the first cover 2 and the second cover 3 can be rotated relative to each other about the first hinge part 7. Yes. Accordingly, the second cover 3 can be opened by rotating the second cover 3 about the first hinge portion 7 with the first cover 2 fixed to a fuse unit (not shown). .

  1, 2, 4 and 5 show a state before the second cover 3 is opened with respect to the first cover 2, and in this state, the first cover 2 and the second cover 3 are the fuse unit. The top is covered.

  The first cover 2 is formed in a box shape with an open bottom surface by an upper wall portion 21 and side wall portions 22 on both sides hanging from the left and right sides of the upper wall portion 21. The second cover 3 is formed into a box shape having an open lower surface by an upper wall portion 31, side wall portions 32 on both sides hanging from the left and right sides of the upper wall portion 31, and a rear side wall portion 33 hanging from the rear side of the upper wall portion 31. Is formed. The insides of the first cover 2 and the second cover 3 are in a communicating state, and the protective cover 1 covers the upper part of the fuse unit in this communicating state. When the protective cover 1 is attached to the fuse unit, the first cover 2 is fixed to the fuse unit. On the other hand, the second cover 3 is rotatable with respect to the first cover 2 around the first hinge portion 7.

  The first hinge portion 7 is provided between the upper wall portion 21 of the first cover 2 and the upper wall portion 31 of the second cover 3 to connect these covers 2 and 3. The first hinge portion 7 is thinner than the first cover 2 and the second cover 3, and thereby the second cover 3 is rotatably connected to the first cover 2. The first hinge portion 7 is provided on the upper wall portions 21 and 31 of the first cover 2 and the second cover 3, and the first hinge portion is provided on the side wall portions 22 and 32 on both sides of the covers 2 and 3. 7 is not provided, and a gap 8 corresponding to the width of the first hinge portion 7 is formed between the side wall portion 22 and the side wall portion 32 (see FIG. 2).

  As shown in FIGS. 1 and 2, the contact plate 4 is connected to the second cover 3 via the second hinge portion 9. In the present embodiment, the contact plate 4 is provided for each of the side wall portions 32 on both sides of the second cover 3, and the second hinge portion 9 is formed on the side wall portions 32 on the left and right sides of the second cover 3. It is integrally formed. The second hinge portion 9 is thinned and extends outwardly from the lower portions of the side wall portions 32 on both sides of the second cover 3 (extends along the edge of the lower portion of the side wall portions 32). The contact plate 4 is connected to each of a part of the lower edge of the portion 32. Since the contact plate 4 is connected to the second cover 3 via the second hinge portion 9, the contact plate 4 can be rotated about the second hinge portion 9.

  The contact plate 4 has a dimension extending from the second cover 3 in the direction of the first cover 2, and rotates about the second hinge portion 9, whereby the side wall portions 32 on both sides of the second cover 3. And it contacts the outer surface of the side wall part 22 on both sides of the first cover 2. That is, the contact plate 4 contacts the second cover 3 and the side walls 22 and 32 on both sides of the first cover 2 in a state of straddling the gap 8 due to the arrangement of the first hinge portion 7. .

  By such contact of the contact plate 4, the first cover 2 and the second cover 3 are supported by the contact plate 4, and thus the torsion between the covers 2 and 3 is suppressed. In the present embodiment, the contact plate 4 is provided to the side wall portions 32 on both sides of the second cover 3 so that the contact plate 4 sandwiches the first cover 2 and the second cover 3 from both sides. Abut. Thus, in the structure which contacts in the state pinched | interposed from both sides, the twist between the 1st cover 2 and the 2nd cover 3 can be suppressed more reliably.

  The engaging member 5 includes slits 11 and 12 formed on the respective contact plates 4, and bosses 13 and 14 formed on the side wall portions 22 on both sides of the first cover 2 so as to correspond to the slits 11 and 12. It is constituted by.

  The slits 11 and 12 are formed in each contact plate 4 so as to have an arc shape. The lengths of the slits 11 and 12 are set according to the rotation of the second cover 3, and the slit 11 is long and the slit 12 is short. Each of the slits 11 and 12 is formed in an arc shape centering on the first hinge portion 7. Thus, the slits 11 and 12 are formed in an arc shape with the first hinge portion 7 as the center, so that the opening operation of the second cover 3 that rotates about the first hinge portion 7 is smoothly performed. Can do.

  The bosses 13 and 14 protrude from the side wall portion 22 to the outside of the side wall portion 22 on both sides of the first cover 2, and the upper boss 13 corresponds to the short slit 12 and the lower boss 14 corresponds to the long slit 11. doing. When the contact plate 4 is rotated toward the first cover 2 around the second hinge portion 9, the boss 13 is inserted into the slit 12 and the boss 14 is inserted into the slit 11. By this insertion, the bosses 13 and 14 and the slits 11 and 12 are engaged. When the second cover 3 is opened with the bosses 13 and 14 on the first cover 2 side inserted into the slits 11 and 12 on the contact plate 4 side, the contact plate 4 and the second cover 3 are integrated. Therefore, the bosses 13 and 14 and the slits 11 and 12 slide relative to each other. The opening operation of the second cover 3 stops when the bosses 13 and 14 reach the end points of the slits 11 and 12. In the present embodiment, the opening operation of the second cover 3 is stopped when the second cover 3 is upright with respect to the first cover 2 (see FIG. 6B).

  By inserting the bosses 13 and 14 into the slits 11 and 12, a frictional force is generated between the bosses 13 and 14 and the slits 11 and 12. Therefore, the open state of the second cover 3 can be held at an arbitrary angle by this frictional force.

  As shown in FIG. 3, locking projections 37 and 38 are formed in the respective slits 11 and 12. The locking projections 37 and 38 are formed in the respective slits 11 and 12 so as to correspond to the end point of the opening operation of the second cover 3. In the formation portions of the locking projections 37 and 38, The widths of the slits 11 and 12 are narrower than the bosses 13 and 14. As shown in FIG. 7, the locking projections 37 and 38 are locked to the bosses 13 and 14 when the opening operation of the second cover 3 reaches the end point. By this locking, sliding of the bosses 13 and 14 with respect to the slits 11 and 12 is fixed at the end point position. For this reason, the maximum open state of the second cover 3 can be stably maintained.

  In addition to the above, lock protrusions 41 and 42 are formed on the side wall portions 32 on both sides of the contact plate 4 and the second cover 3 (see FIGS. 2 and 5).

  The lock protrusions 41 are formed on the contact plate 4, and two lock protrusions 41 are formed on the surface of the contact plate 4 facing the covers 2 and 3. The lock protrusions 41 are formed so as to correspond to the gaps 8 formed between the side wall portions 22 on both sides of the first cover 2 and the side wall portions 32 on both sides of the second cover 3. By rotating the second hinge portion 9, each lock projection 41 enters the gap 8. The lock protrusion 41 is formed with a stepped lock portion 41 a at the head, and when the lock protrusion 41 enters the gap 8, the lock portion 41 a engages with the side wall portions 32 on both sides of the second cover 3. . By this engagement, the contact state of the contact plate 4 with the first cover 2 and the second cover 3 can be maintained.

  The lock protrusions 42 are formed on the side wall portions 32 on both sides of the second cover 3, and correspond to the linear end portions 43 of the respective contact plates 4. The lock protrusion 42 is formed with a stepped lock portion 42 a at the head, and the lock portion 42 a is engaged with the linear end portion 43 of the contact plate 4 by rotating the contact plate 4. By this engagement, the contact state of the contact plate 4 with the first cover 2 and the second cover 3 can be maintained.

  Next, the operation of this embodiment will be described. Before the protective cover 1 is attached to the fuse unit, the left and right contact plates 4 are in the unfolded state away from the second cover 3 and the first cover 2 as shown in FIGS.

  By fixing the first cover 2 to the fuse unit, the protective cover 1 covers the upper part of the fuse unit. In this state, the left and right contact plates 4 are rotated about the second hinge portion 9. By the rotation of the contact plate 4, the left and right contact plates 4 abut on the side wall portions 32 on both sides of the second cover 3 and abut on the side wall portions 22 on both sides of the first cover 2. By contact of the contact plate 4, the bosses 13 and 14 formed on the side wall portions 22 on both sides of the first cover 2 are inserted into the corresponding slits 11 and 12 of the contact plate 4. Further, the lock protrusions 41 of the respective contact plates 4 enter the gaps 8 of the covers 2 and 3 and engage the side wall portions 32 on both sides of the second cover 3, and the lock protrusions 42 of the second cover 3 respectively Is engaged with the linear end 43 of the contact plate 4. With these engagements, the contact plate 4 can maintain a state of contacting the outer surfaces of the side wall portions 22 and 32 with the first cover 2 and the second cover 3 interposed therebetween (see FIG. 4 and FIG. 4). (See FIG. 5).

  FIG. 6A shows a state before the second cover 3 is opened, and the second cover 3 is rotated about the first hinge portion 7 by lifting the second cover 3 upward in this state. To do.

  As the second cover 3 rotates, the left and right contact plates 4 rotate together with the rotation of the second cover 3. By this rotation, the bosses 13 and 14 slide on the slits 11 and 12. Since the slits 11 and 12 are formed in an arc shape with the first hinge portion 7 as the center, the second cover 3 can be smoothly rotated.

  FIG. 6B and FIG. 7 show a state in which the second cover 3 is opened to reach the end point of the opening operation, and the bosses 13 and 14 are formed on the locking projections 37 and 38 of the slits 11 and 12, respectively. Lock. By this locking, the second cover 3 can maintain the maximum open state. For this reason, it is not necessary to hold | maintain the 2nd cover 3 by hand, and operations, such as a maintenance to a fuse unit, can be performed easily.

  According to the above embodiment, when the contact plate 4 is rotated, the contact plate 4 is in contact with the outer surfaces of both the first cover 2 and the second cover 3, and thus the contact plate 4 is in contact with the first cover. The first cover 2 and the second cover 3 are supported by the contact plate 4 by contacting the outer surfaces of both the second cover 3 and the second cover 3. For this reason, the twist between these covers 2 and 3 is suppressed, and the twist to the 1st hinge part 7 which connects the 1st cover 2 and the 2nd cover 3 is suppressed. Thus, since the load to the 1st hinge part 7 by torsion is suppressed, the 1st hinge part 7 is not damaged. As a result, the second cover 3 connected to the first cover 2 via the first hinge portion 7 is not separated from the first cover 2.

  In particular, in this embodiment, the left and right contact plates 4 contact the covers 2 and 3 with the first cover 2 and the second cover 3 sandwiched therebetween, so that the first cover 2 and the second cover 3 are firmly The torsion between the first cover 2 and the second cover 3 can be further reliably suppressed. Therefore, damage to the first hinge portion 7 due to torsion can be more reliably prevented, and the second cover 3 can be prevented from being dispersed.

  In this embodiment, the bosses 13 and 14 on the first cover 2 side are inserted into the slits 11 and 12 on the contact plate 4 side, and a frictional force is generated between them. With this frictional force, the open state of the second cover 3 can be maintained.

  The present invention is not limited to the above embodiment, and various modifications can be made. The abutting plate 4 is configured to abut against the side walls 22 and 32 on one side of the covers 2 and 3 without abutting against the side walls 22 and 32 on both sides of the first cover 2 and the second cover 3. Also good. That is, one abutment plate 4 may be provided on one side of the first cover 2 and the second cover 3 and abutted against the side wall portions 22 and 23 of these covers. Even in such a contact on one side of the contact plate 4, since the torsion of the first cover 2 and the second cover 3 can be suppressed, the load on the first hinge portion 7 due to the torsion can be suppressed. Discrete cover 3 can be prevented. In such a structure, since the number of the contact plate 4, the bosses 13 and 14, and the slits 11 and 12 can be reduced, a simple structure can be achieved.

  Further, in the above embodiment, the contact plate 4 can be rotated by providing the second hinge portion 9 on the second cover 3. However, the second hinge portion 9 is provided on the first cover 2 and provided on the contact plate 4. May be rotatable.

  Furthermore, since the bosses 13 and 14 can maintain the open state of the second cover 3 by the frictional force inserted into the slits 11 and 12, the locking projection 37 for maintaining the maximum open state of the second cover 3. , 38 may be omitted.

  Furthermore, the slits 11 and 12 are not provided in the contact plate 4 but are provided in the side wall portion 22 of the first cover 2, and the bosses 13 and 14 are provided in the contact plate 4 without being provided in the first cover 2. May be.

DESCRIPTION OF SYMBOLS 1 Fuse unit protective cover 2 1st cover 3 2nd cover 4 Contact plate 5 Engagement member 7 1st hinge part 9 2nd hinge part 11, 12 Slit 13, 14 Boss 21, 31 Upper wall part 22, 32 Side wall part 37, 38 Locking projection 41, 42 Lock protrusion

Claims (4)

The first cover and the second cover are connected via the first hinge part to cover the upper part of the fuse unit, and the first cover and the second cover are rotated relative to each other about the first hinge part. A fuse unit protective cover capable of opening the second cover;
The first cover and the second cover are connected to one cover of the first cover and the second cover via a second hinge part, and are rotated about the second hinge part to thereby rotate the first cover and the second cover. A contact plate that contacts both outer surfaces;
The contact plate is provided on the other cover of the first cover and the second cover, and is engaged with each other by the contact of the contact plate with the outer surfaces of the first cover and the second cover. A fuse unit protective cover comprising an engagement member that holds the open state of the second cover in the engaged state. The fuse unit protective cover according to claim 1,
The first hinge part is provided on an upper wall part of the first cover and the second cover, and the contact plate and the engagement member are provided on side wall parts on both sides of the first cover and the second cover. A fuse unit protective cover, which is provided. The fuse unit protective cover according to claim 1 or 2,
The engagement member is provided on the contact plate or the other cover, and has an arcuate slit centered on the first hinge portion, and the other cover or the contact plate corresponding to the slit. The fuse unit protective cover is formed by a boss that is slidably inserted into the slit. The fuse unit protective cover according to claim 3,
Fuse unit protection characterized in that a locking projection for locking the boss and maintaining the maximum opening state is formed at a position corresponding to the end point of the opening operation of the second cover in the slit. cover.

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