JP2012238558A - Structure for mounting electric wire connection terminal cover of fusible link block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate attachment and detachment of a cover even when an obstacle exists near the cover.SOLUTION: A structure for mounting an electric wire connection terminal cover of a fusible link block comprises: a fusible link block 1 in which a terminal part 3 for connecting an electric wire is provided on an upper face of a block body 2 and an engagement column 5 stands near it; a cover 10 having a fitting boss 20 rotatably fitting with the engagement column and a covering wall 14 for shielding the terminal part; an engagement part 15 and an engaged part 4 engaged with each other so that the cover cannot be rotated when the terminal part is covered by the covering wall and the cover can be rotated during non-engagement; and temporary locking means 9, 23 for temporarily locking a fitting boss at a high position so that the cover can rotate and final locking means 8, 23 for finally locking the fitting boss at a low position so that the cover cannot rotate.

Description

  The present invention relates to a mounting structure for a wire connection terminal portion cover of a fusible link block that connects between an in-vehicle battery and a load circuit side electric wire.

  In the fusible link block, a cap (wire connection terminal portion cover) is usually provided so as to cover the connection portion of the electric wire in order to prevent leakage (see, for example, Patent Document 1). In this case, normally, lock portions are provided on the main body side and cap side of the fusible link block, and the lock portions are engaged with each other to prevent the cap from falling off. In many cases, a structure is employed in which the lock portions are engaged with each other only by being pushed in from above.

  7 to 9 show a cap mounting structure in a conventional fusible link block.

  In FIG. 7, a battery post 101 is provided on the upper surface of the battery 100, and a battery fastening portion 111 provided at one end of the connection terminal 110 is connected to the battery post 101. A fusible link connecting portion 112 is provided at the other end of the connection terminal 110, and a power supply side terminal portion 122 provided on one end side of the fusible link block 120 is connected to the fusible link connecting portion 112.

  In addition, a wire connection terminal portion 124 is provided on the other end side of the fusible link block 120 bent in an L shape downward along the side surface from the upper surface of the battery 100, and the wire connection terminal portion 124 includes: A terminal 131 provided at the end of the load-side electric wire 130 is connected. A fuse portion 123 having a fusible portion is provided between the power supply side terminal portion 122 and the wire connection terminal portion 124 of the fusible link block 120, and the fuse portion 123 is blown when an overcurrent flows. Thus, the current flowing from the power supply side terminal portion 122 to the wire connection terminal portion 124 can be interrupted. The fuse portion 123, the power supply side terminal portion 122, and the electric wire connection terminal portion 124 are configured by an integral bus bar. The fusible link block 120 is formed by covering a necessary portion of the bus bar with an insert-molded resin case. Is formed.

  A cap 140 is placed on the upper side of the fusible link block 120 so as to cover the entire fusible link block 120. The cap 140 includes a vertical portion 141 that covers the electric wire connection terminal portion 124, a horizontal portion 142 that covers the power supply side terminal portion 122, and a hinge portion that rotatably connects the horizontal portion 142 to the vertical portion 141 in the vertical direction. 143. The cap 140 is provided with a lock portion (not shown) that engages with a lock portion (not shown) on the fusible link block side by being pushed onto the fusible link block 120 from above.

  As described above, in many cases, conventionally, a structure is employed in which the lock portions are engaged with each other by pushing the cap 140 into the fusible link block 120 from above. FIG. 8 shows a state in which the cap 140 is attached, and FIG. 9 shows a state in which the horizontal portion 142 of the cap 140 is lifted upward to open the power supply side terminal portion 122.

  As shown in FIG. 9, the cap 140 can open the power supply side terminal portion 122 by lifting the horizontal portion 142 upward, but it is necessary to push it in from the top so that it can be installed nearby. It may be difficult to desorb in a narrow place with things.

  10 and 11 show an example in the case where there is an obstacle in the vicinity of the fusible link block.

  What is indicated by reference numeral 200 in the figure is a fusible link block, in which an electric wire connection terminal portion 202 is disposed at the upper end of the block main body 201, and a sheet-like obstacle close to the upper side of the electric wire connection terminal portion 202. 210 is arranged. A portion indicated by a dotted line S is a portion to be protected by the cover, and the electric wire is drawn in the direction of arrow F. The upper surface of the fusible link block 200 is located in the XY plane, and the obstacle 210 close to the fusible link block 200 covers a part above the part (protection required area) S to be protected by the cover. Therefore, there is no margin in the Z direction above the portion S.

JP 2006-40799 A

  In the case of the layout as shown in FIGS. 10 and 11, the obstacle 210 is close to the diagonally upper side of the wire connection terminal portion 202, and the portion S to be protected is hidden under the obstacle 210. Even if the cover is to be covered, the obstacle 210 is in the way and cannot be easily mounted.

  The present invention has been made in view of the above-described circumstances, and its purpose is to easily remove and remove the cover even when there is an obstacle near the fusible link block, or to move the cover to move the electric wire. An object of the present invention is to provide an attachment structure for a wire connection terminal portion cover of a fusible link block that can open a connection terminal portion.

The above object of the present invention can be achieved by the following constitution.
(1) A fusible link block in which a terminal portion for connecting an electric wire is provided on the upper surface of the block main body, and an engagement column is erected in the vicinity of the terminal portion;
A cover having a fitting boss that fits in the direction along the upper surface of the block main body to the engagement column, and a cover wall that covers the terminal portion;
The block main body and the cover are provided on the cover and engaged with each other when the terminal portion is covered by the cover wall so that the cover cannot be rotated, and the cover can be rotated when not engaged. An engaging portion and an engaged portion, and
Rotating the cover while maintaining the engaging portion and the engaged portion in a non-engaged state by temporarily locking the fitting boss at a high position provided on the engaging strut and the fitting boss. And temporarily locking the fitting boss at a low position to maintain the engaging portion and the engaged portion in an engaged state, thereby preventing the cover from rotating. A main locking means to
A mounting structure for a wire connection terminal cover of a fusible link block.

(2) The engagement strut is provided as a columnar strut,
A first annular convex portion as the temporary locking means is provided on the outer periphery on the tip side of the columnar column,
A second annular convex portion as the main locking means is provided on the outer periphery of the base end side of the columnar column as substantially the same diameter as the outer diameter of the first annular convex portion,
On the other hand, the cover is constituted by a resin molded product integrally having the fitting boss,
The fitting boss is provided with a cylindrical wall having a circular hole with an inner diameter that fits into the first annular convex portion and the second annular convex portion,
An engagement hole edge whose opening diameter is made smaller than that of the first annular protrusion and the second annular protrusion by constricting the cylindrical wall at the lower end of the cylindrical wall is the temporary locking means and the main locking means. The mounting structure of the wire connection terminal part cover of the fusible link block according to the above (1), characterized in that it is also provided as a part.

(3) The cover is formed in a band plate shape, and the engaging portions are formed as ribs protruding downward on both side edges of the band plate cover,
The fusible link according to (1) or (2), wherein the engaged portion that engages with a rib serving as the engaging portion protrudes from an upper surface of the block main body. Mounting structure for the block wire connection terminal cover.

  According to the mounting structure having the above configuration (1), the cover can be rotated with the engaging support column as a fulcrum, so even if there is an obstacle near the fusible link block, it does not interfere with the obstacle in advance. By attaching the cover to the engagement support column at the position and rotating the cover in that state, the cover can be positioned at a position covering the wire connection terminal portion. That is, it is possible to easily attach the cover to a position where an appropriate protection function can be exhibited even in a narrow space while avoiding interference with an obstacle. Further, the cover can be easily removed by operating in the opposite direction. Moreover, since a wire connection terminal part can be open | released by rotating a cover, attachment and removal of the electric wire with respect to a wire connection terminal part can be performed easily.

  According to the mounting structure having the configuration (2), the fitting boss of the cover can be fitted to the engagement column so that the cover can be smoothly rotated without looseness.

  According to the mounting structure having the configuration of (3) above, the cover is rotated by engaging the engaging portions provided on both side edges of the band plate-like cover with the engaged portions protruding from the upper surface of the block body. Therefore, the cover can be securely locked so as not to rattle.

  According to the present invention, even when there is an obstacle near the fusible link block, the cover can be easily removed or the cover can be moved to open the wire connection terminal portion.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the cover used for the attachment structure of embodiment of this invention, (a) is the perspective view which looked at the cover from the top, (b) is the perspective view which turned the cover upside down, (c) is the side of the cover FIG. It is the perspective view seen from the top which shows the external appearance of the attachment structure of the embodiment. It is a perspective view which shows the structure of the engagement support | pillar used for the attachment structure of the embodiment. 2A is a cross-sectional view taken along the line AA in FIG. 2, and is a cross-sectional view showing a state in which the fitting boss of the cover is temporarily locked to the engagement strut on the fusible link block main body side, and FIG. It is a principal part enlarged view. 2A is a cross-sectional view taken along the line AA in FIG. 2, and is a cross-sectional view showing a state in which the fitting boss of the cover is permanently locked to the engagement strut on the fusible link block main body side, and FIG. It is a principal part enlarged view. FIG. 5A is a plan view showing a state in which the cover is temporarily mounted at a position where it does not interfere with an obstacle, and FIG. 5B is a diagram showing an appropriate protection by rotating the cover. It is a top view which shows the state equipped with this in the position which can exhibit a function. It is a disassembled perspective view which shows the cap attachment structure of the conventional fusible link block. It is a perspective view which shows the external appearance of the state which mounted | wore the cap of FIG. It is a perspective view which shows the state which lifts the horizontal part of the cap upwards, and has open | released the power supply side terminal part. It is a perspective view which shows the attachment structure when an obstruction exists in the vicinity of the conventional fusible link block. It is explanatory drawing of the attachment structure of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram of a cover used in the mounting structure of the embodiment, (a) is a perspective view of the cover as viewed from above, (b) is a perspective view of the cover turned over, and (c) is a side view of the cover. FIG. 2, FIG. 2 is a perspective view seen from above showing the external appearance of the mounting structure of the same embodiment, FIG. 3 is a perspective view showing the configuration of the engagement struts used in the mounting structure of the same embodiment, and FIG. FIG. 2 is a cross-sectional view showing a state in which the fitting boss of the cover is temporarily locked to the engagement strut on the fusible link block main body side, taken along the line AA in FIG. 5A is a cross-sectional view taken along the line AA in FIG. 2, and is a cross-sectional view showing a state in which the fitting boss of the cover is permanently locked to the engagement strut on the fusible link block main body side, and FIG. It is a principal part enlarged view of a).

  As shown in FIGS. 2, 4, and 5, the fusible link block 1 has a terminal portion 3 for connecting an electric wire at the end of the upper surface of the block body 2. Further, in the vicinity of the terminal portion 3, there is an engaging column 5 protruding upward. In the vicinity of the fusible link 1, an obstacle (sheet) 210 is disposed obliquely above the wire connection terminal portion 3. The obstacle 210 is not in a position directly covering the upper portion of the electric wire connecting terminal portion 3, but is in a position of covering the upper portion of the electric wire connected to the terminal portion 3. Therefore, it is not possible to cover the cover from above. The engagement strut 5 is disposed on the opposite side across the obstacle 210 and the terminal portion 3.

  As shown in FIGS. 1 and 4, the cover 10 is for covering the upper part of the terminal part 3 and the upper part of the electric wire connected to the terminal part 3, and the first plate part 11 parallel to the upper surface of the block body 2. And a second plate portion 12 that gently and obliquely descends from the first plate portion 11 and a third plate portion 23 that is connected to the second plate portion 12 and is parallel to the first plate portion 11 and having a bent structure. A cover wall 14 is provided. The first plate portion 11 is a portion located at a position removed from the obstacle 210 when the cover 10 is attached, and the third plate portion 13 is inserted below the obstacle 210 when the cover 10 is attached. This is a portion hidden under the obstacle 210 when viewed from above. The reason why the third plate portion 13 is positioned below the first plate portion 11 is to insert the third plate portion 13 below the obstacle 210 disposed at a low position. When the position of the obstacle 210 is a little higher, it is not necessary to adopt such a bent structure.

  On the lower surface of the first plate portion 11 of the cover 10, a fitting boss 20 is fitted so as to be fitted to the engaging column 5 provided on the fusible link block 1 side. The cover 10 can be held in a state in which the cover 10 can be rotated in the direction along the upper surface of the block main body 2 with the engaging column 5 as a fulcrum. The cover 10 is formed of a resin molded product having a fitting boss 20 integrally.

  4B and 5B, the cover 10 and the block main body 2 are engaged with each other when the terminal portion 3 is covered with the cover 10, so that the cover 10 An engaging portion 15 and an engaged portion 4 are provided, which disable rotation and allow the cover 10 to rotate when not engaged. The engaging portion 15 is formed as a rib protruding downward on both side edges of the first plate portion 11 of the belt-like cover 10. Further, the engaged portion 4 projects from the upper surface of the block body 2 so as to be able to engage with the rib 15.

  Further, as shown in FIG. 4, the engaging boss 20 and the mating boss 20 are temporarily engaged with each other at a high position so that the engaging portion 15 and the engaged portion 4 are not engaged. Temporary locking means (described later) that enables the cover 10 to be rotated while maintaining the state, and as shown in FIG. And an engaging means (described later) that keeps the engaged portion 4 in an engaged state and disables the rotation of the cover 10.

  As shown in FIGS. 2, 4, and 5, the engagement strut 5 is provided as a columnar strut 7 in which the base end 6 is embedded and fixed in the block body 2, and the distal end side of the columnar strut 7 is provided. A first annular convex portion 9 as a temporary locking means is provided on the outer periphery, and a second annular convex portion 8 as a main locking means is provided on the base end side outer periphery of the columnar column 7. The outer diameter of the 1st annular convex part 9 and the 2nd annular convex part 8 is substantially the same diameter.

  As shown in FIGS. 4 and 5, the fitting boss 20 is a cylinder having a circular hole 21 having an inner diameter that fits into the first annular convex portion 9 and the second annular convex portion 8 of the engaging column 5. A wall 22 is provided, and an engagement hole edge 23 whose opening diameter is made smaller than that of the first annular protrusion 9 and the second annular protrusion 8 by constricting the cylindrical wall 22 at the lower end of the cylindrical wall 22. However, it is provided as the temporary locking means and the main locking means.

Next, the operation will be described.
In order to attach the cover 10 to the fusible link block 1, first, as shown in FIG. 6A, the cover 10 is kept in a posture not to interfere with the obstacle 210 and is pushed down from above to engage the fitting boss 20. It is fitted to the mating column 5 and temporarily locked. That is, the engagement hole edge 23 of the fitting boss 20 is pushed down to the lower side of the first annular convex portion 9 of the engagement column 5. FIG. 4 shows this state.

  The cover 10 is rotated in the direction of the arrow R in FIG. 6A in the temporarily locked state as described above, and the third plate portion 13 of the cover 10 as shown in FIGS. 4 and 6B. Is inserted under the obstacle 210. Next, the cover 10 is further pushed in at that position, so that the fitting boss 20 is fully locked to the engagement column 5 as shown in FIG. That is, the engagement hole edge 23 of the fitting boss 20 is pushed down to the lower side of the second annular convex portion 8 of the engagement column 5. By doing so, the rib 15 of the cover 10 can be engaged with the engaged portion 4 of the block main body 2, and the cover 10 can be attached to the fusible link block 1 in a non-rotatable state. The connection part of the electric wire connecting terminal part 3 and the electric wire connected to the terminal part 3 can be protected.

  As described above, according to the cover mounting structure of the present embodiment, the cover 10 can be rotated about the engaging column 5, so that there is an obstacle 201 in the vicinity of the fusible link block 1. Even in this case, the cover 10 is attached to the engagement column 5 at a position that does not interfere with the obstacle 210 in advance, and the cover 10 is rotated in this state, so that the cover 10 is placed at an appropriate position that covers the terminal portion 3 for connecting wires. Can be placed and mounted. That is, while avoiding interference with the obstacle 210, the cover 10 can be easily mounted at a position where a proper protection function can be exhibited even in a narrow space.

  Moreover, when removing the cover 10, the cover 10 can be easily removed by operating in the opposite direction to the above. Moreover, since the terminal part 3 for electric wire connection can be open | released by rotating the cover 10, the attachment or detachment of the electric wire with respect to the terminal part 3 for electric wire connection can be performed easily.

  Moreover, according to said structure, the fitting boss | hub 20 of the cover 10 can be fitted so that the cover 10 can be smoothly rotated without rattling to the engagement support | pillar 5. FIG. Further, by engaging the engaging portions (ribs 15) provided on both side edges of the belt-like cover 10 with the engaged portions 4 protruding from the upper surface of the block body 2, the cover 10 is prevented from rotating. Since it is locked, the cover 10 can be securely locked so as not to rattle.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

DESCRIPTION OF SYMBOLS 1 Fusible link block 2 Block main body 3 Terminal part 4 Engaged part 5 Engagement support | pillar 7 Column-shaped support | pillar 8 2nd cyclic | annular convex part (main locking part)
9 1st annular convex part (temporary locking part)
DESCRIPTION OF SYMBOLS 10 Cover 14 Cover wall 20 Fitting boss 21 Circular hole 22 Cylindrical wall 23 Engagement hole edge (temporary latching | locking part, this locking part)

Claims (3)

A fusible link block in which a terminal part for connecting an electric wire is provided on the upper surface of the block body, and an engagement column is erected in the vicinity of the terminal part;
A cover having a fitting boss that fits in the direction along the upper surface of the block main body to the engagement column, and a cover wall that covers the terminal portion;
The block main body and the cover are provided on the cover and engaged with each other when the terminal portion is covered by the cover wall so that the cover cannot be rotated, and the cover can be rotated when not engaged. An engaging portion and an engaged portion, and
Rotating the cover while maintaining the engaging portion and the engaged portion in a non-engaged state by temporarily locking the fitting boss at a high position provided on the engaging strut and the fitting boss. And temporarily locking the fitting boss at a low position to maintain the engaging portion and the engaged portion in an engaged state, thereby preventing the cover from rotating. A main locking means to
A mounting structure for a wire connection terminal cover of a fusible link block. The engagement strut is provided as a columnar strut,
A first annular convex portion as the temporary locking means is provided on the outer periphery on the tip side of the columnar column,
A second annular convex portion as the main locking means is provided on the outer periphery of the base end side of the columnar column as substantially the same diameter as the outer diameter of the first annular convex portion,
On the other hand, the cover is constituted by a resin molded product integrally having the fitting boss,
The fitting boss is provided with a cylindrical wall having a circular hole with an inner diameter that fits into the first annular convex portion and the second annular convex portion,
An engagement hole edge whose opening diameter is made smaller than that of the first annular protrusion and the second annular protrusion by constricting the cylindrical wall at the lower end of the cylindrical wall is the temporary locking means and the main locking means. The mounting structure of the wire connection terminal part cover of the fusible link block according to claim 1, wherein the structure is also provided as a part that also serves as a cover. The cover is formed in a band plate shape, and the engaging portions are formed as ribs protruding downward on both side edges of the band plate cover,
3. The electric wire of the fusible link block according to claim 1, wherein the engaged portion that engages with a rib serving as the engaging portion protrudes from an upper surface of the block main body. Connection terminal cover mounting structure.

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