JP2010061814A - Fuse block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily deal with a problem only by changing a fixing member when it is required to change a protrusion dimension or a protrusion shape of a means for fixing a fuse housing to the battery. <P>SOLUTION: The fixing member 14 being as a means to fix the fuse housing 11 to the battery 3 is locked to a fixing jig locking part 12 fitted at the fuse housing 11 in free detachment, so that it is enabled to easily deal with the problem only by remaking the fixing member 14, when a dimension taking over with a battery 3 side changes with a specification change or the like of the mounting battery 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a battery direct-attached type fuse block that enables electric wire connection via a fuse to a battery without going through a fuse box installed away from the battery.

  FIG. 9 and FIG. 10 show a conventional example of a battery direct-attached fuse block that enables electric connection to a battery via a fuse without going through a fuse box installed away from the battery. It is.

  The fuse block 101 shown here is disclosed in the following Patent Document 1, and includes a plurality of circuits connected to a bus bar 111 and a plurality of protective body connecting plate portions 113 integrally formed at one end of the bus bar 111. A protective body 121, a plurality of circuit connection terminals 131 connected to the bus bar 111 via the circuit protection body 121, and a resin that accommodates and holds the bus bar 111, the circuit protection body 121, and the plurality of circuit connection terminals 131. And a fuse housing 141 made of metal.

The bus bar 111 extends along the upper surface 103a of the battery 103 and is electrically connected to the battery post 105, and the bus bar 111 extends from the battery connection plate 112 along the side surface 103b of the battery 103. The part 114 and the plurality of protective body connecting plate parts 113 branched at the tip of the extension part 114 are integrally formed of a metal plate.
The protector connection plate 113 is formed in a terminal structure for fitting and connecting the circuit protector 121.

  The circuit protector 121 shown here is a so-called fusible link, and although a detailed configuration is not shown, a terminal connected to the protector connecting plate 113 and a terminal connected to the circuit connecting terminal 131 The circuit body is provided with a low melting point metal fusible part that melts when a current exceeding the rating flows between the part and a resin case that houses the circuit body.

  The circuit connection terminal 131 is connected to an in-vehicle electrical circuit via a wire harness 151 connected to the circuit connection terminal 131.

  As shown in FIG. 10, such a fuse block 101 is mounted on the battery 103 with an L-shaped layout straddling the one edge portion of the upper edge of the battery 103, so that the position of the center of gravity of the fuse block 101 is It can be brought close to the post 105 and is effective in reducing the occupied space when attached to the battery 103 and improving the vibration resistance performance by reducing the bending moment acting on the connecting portion to the battery 103.

  However, in recent years, the number of wire harnesses 151 connected to the fuse block 101 has increased due to an increase in in-vehicle electrical circuits, and accordingly, the load acting on the fuse block 101 from the wire harness 151 and the like has also increased.

  Therefore, in order to prevent the bus bar 111 from being damaged due to an excessive load or vibration acting on the bus bar 111 due to the load from the wire harness 151 or the vibration transmitted from the vehicle, the fuse block 101 includes the bus bar 111. Structural reduction is required to reduce the load acting on the surface and to suppress the vibration acting on the surface.

  In the case of the fuse block 101 described above, as a structure for reducing the load acting on the bus bar 111 and suppressing the vibration, a resin frame 161 that is mounted on the upper surface of the battery 103 in a crown manner on the upper surface of the battery 103. The frame body 161 is provided with a locking portion 163 for fixing the fuse housing 141 of the fuse block 101. The fuse housing 141 is integrally formed with a connecting projection 143 that engages with the locking portion 153, and the fuse housing 141 itself is fixed to the battery 103 via the frame 151.

  That is, in the fuse block 101 described above, the bus bar 111 receives the load applied from the wire harness 151 at the connecting portion between the connecting protrusion 143 formed integrally with the fuse housing 141 and the locking portion 163 of the frame body 161. The load that acts is reduced.

  In addition, by connecting the connecting projection 143 and the locking portion 163, the mounting posture of the fuse housing 141 to the battery 103 is stabilized and the rattling is eliminated, thereby improving the vibration resistance performance.

  As described above, the resin-made connecting projection is integrally formed on the resin-made housing to be attached to the battery, and the connecting projection is brought into contact with the surface of the battery or engaged with the battery side. Thus, techniques for reducing loads and vibrations acting on bus bars and connection terminals connected to the battery posts are also described in Patent Documents 2 and 3 below.

Japanese Utility Model Publication No. 64-48850 Japanese Utility Model Publication 2-74762 JP-A-11-260344

  However, in the case of the conventional fuse block 101 in which the resin connection projection 143 to be brought into contact with or engaged with the battery side is integrally formed on the resin fuse housing 141 itself, the generality is poor and the specification of the battery 103 to be mounted is not provided. When it is necessary to change the protruding dimensions or shape of the connecting projection 143 due to changes, a large measure is required to recreate the entire fuse housing 141, which makes it easy to change the specifications of the battery to be installed. There was a problem that it was not possible to cope with.

  The object of the present invention is to solve the above-mentioned problems, and even when the specification of the battery to be installed needs to be changed, the protrusion size and the shape of the means for fixing the fuse housing to the battery need to be changed. It is an object of the present invention to provide a fuse block that can be easily dealt with without requiring a major measure such as the entire rework.

The above-described object of the present invention is achieved by the following configuration.
(1) A battery connection plate extending along the upper surface of the battery and electrically connected to the battery post, and extending from the battery connection plate along the side of the battery and connected to the circuit protector A bus bar in which a plurality of protective body connecting plate portions are integrally formed of a metal plate;
A plurality of circuit connection terminals made of a metal plate for connection with an electrical circuit connected to the protection body connection plate portion via the circuit protection body,
A resin fuse housing that holds and holds the bus bar, the circuit protector, and the plurality of circuit connection terminals in an L shape across one ridge line portion of the battery;
A fuse block directly attached to the battery,
A fuse block, wherein the fuse housing is provided with a fixing member locking portion for detachably locking a fixing member for positioning the fuse housing to the battery.

(2) The fixing device locking portion is provided with a plurality of locking portions so that the locking position of the fixing member can be adjusted according to the shape on the battery side. ) Fuse block.

(3) The fixture locking portion is detachably provided on the fuse housing, and in a state of being attached to the fuse housing, a gap is formed between the fuse housing and a cable to be inserted. The fuse block according to (1) or (2), wherein the fuse block functions as a cable holder for holding a passed cable

  According to the configuration of the above (1), the means for fixing the fuse housing to the battery in order to reduce the load acting on the bus bar and to suppress the vibration can be attached to and detached from the fixture locking portion provided in the fuse housing. This is a fixing member. If the dimensions of the battery to be attached change due to changes in the specifications of the battery to be installed, the fixing member, which is a small part, can be recreated without taking major measures such as remaking the entire fuse housing. Can easily cope with it.

  For example, by simply preparing a plurality of types of fixing members having different shapes and dimensions, high versatility that can be attached to a plurality of batteries having different dimensions can be obtained.

  According to the configuration of (2) above, the size of the battery can be changed in multiple ways just by changing the locking portion on the fixture locking portion for locking the fixing member, and a single type of fixing can be performed. Even if only the members are provided, high versatility can be obtained that can be satisfactorily attached to a plurality of types of batteries having different dimensions.

  According to the configuration of (3) above, not only the design change of the fixing member but also the design change of the fixture locking portion, it is possible to change the size of the battery and change the specification of the battery to be mounted, etc. It is possible to respond more flexibly to changes in the mating dimensions associated with.

  In addition, since the fixture locking portion also serves as the cable holder, the cable connected to the battery can be fixed in an orderly manner without adding a separate cable clamp or the like.

  According to the fuse block of the present invention, the means for fixing the fuse housing to the battery in order to reduce the load acting on the bus bar and to suppress the vibration is detachably fixed to the fixture locking portion provided in the fuse housing. If the dimensions of the battery to be attached change due to changes in the specifications of the battery to be installed, etc., it is only necessary to remake the fixing member, which is a small component, without taking a major measure such as remaking the entire fuse housing. It can be handled easily.

  For example, by simply preparing a plurality of types of fixing members having different shapes and dimensions, high versatility that can be attached to a plurality of batteries having different dimensions can be obtained.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a fuse block according to the present invention will be described in detail with reference to the drawings.

  1 is a perspective view of a fuse block according to an embodiment of the present invention attached to a battery, FIG. 2 is a perspective view of the fuse block shown in FIG. 2, and FIG. 3 is an exploded perspective view of the fuse block shown in FIG. 4 is a perspective view of the fuse block shown in FIG. 3 in an assembled state as seen from diagonally above, FIG. 5 is a perspective view of the fuse block shown in FIG. 4 as seen from diagonally below, and FIG. It is an enlarged view.

  7 is a perspective view of the fuse block according to the embodiment in a state in which the mounting position of the fixing member is changed. FIG. 8 is a perspective view of the fixing member shown in FIG. It is a side view which shows the state currently positioned.

  The fuse block 1 of this embodiment is of a battery direct attachment type that enables electric wire connection via a fuse to the battery 3 without going through a fuse box installed away from the battery 3.

  As shown in FIGS. 1 to 3, the fuse block 1 of the present embodiment has a plurality of circuit connection terminals (not shown) made of a metal plate via a circuit protector (not shown) at the tip of a metal plate bus bar 5. A fuse element 9 having a configuration in which the fuse element 9 is connected, a resin-made fuse housing 11 that accommodates and holds the fuse element 9 in an L shape as shown in the figure, and a fixture locking portion 12 provided in the fuse housing 11 The fixing member 14 is detachably locked to the fuse housing 11, and the cover 15 is detachably attached to the fuse housing 11.

  The bus bar 5 includes a battery connection plate portion 5a extending along the upper surface 3a of the battery 3 and a plurality of protector connection plate portions (not shown) provided extending from the battery connection plate portion 5a. Each protector connection plate is connected to a circuit protector (not shown).

  In the case of this embodiment, the circuit protector is a fusible body made of a low melting point metal that melts when a current exceeding the rating flows, and functions as a so-called fuse. It is conceivable to equip a relay element for turning the flow on and off, a light emitting element, and the like.

  As shown in FIGS. 2 and 3, the battery connection plate portion 5 a of the bus bar 5 is provided with a terminal connection hole 5 b through which the stud bolt 21 a of the battery terminal 21 is inserted.

  As shown in FIGS. 1 and 2, the battery terminal 21 extends to one side of the post connecting portion 21 b and a post connecting portion 21 b fastened to the battery post 3 b protruding from the upper surface 3 a of the battery 3. A fuse block connecting plate portion 21c, and the stud bolt 21a for screwing the battery connecting plate portion 5a is implanted in the fuse block connecting plate portion 21c.

  As shown in FIG. 2, the battery connection plate portion 5 a of the bus bar 5 is connected to the battery terminal 21 by fastening with the stud bolt 21 a and is electrically connected to the battery post 3 b via the battery terminal 21.

  A plurality of protective body connection plate portions (not shown) connected to the battery connection plate portion 5a are arranged in a plurality of rows so as to extend along the side surface 3c of the battery 3 and extend from the battery connection plate portion 5a. It is formed by branching into two, and each protective body connecting plate portion is connected to a circuit protective body having a predetermined rating.

  A circuit connection terminal (not shown) is a terminal part made of a metal plate connected to the protector connection plate part via a circuit protector (not shown).

  The fuse housing 11 accommodates and holds the fuse element 9 in an L shape straddling the one ridge portion 3d of the battery 3 by insert molding.

  As shown in FIG. 2, the fuse housing 11 of the present embodiment includes a first housing portion 11 a that houses and holds the battery connection plate portion 5 a of the bus bar 5, a protective body connection plate portion (not shown), It is comprised from the 2nd housing part 11b which covers a circuit protector and a part of circuit connection terminal. The first housing portion 11a and the second housing portion 11b are connected and fixed in an L shape.

  The first housing portion 11a covers a range of the surface of the battery connection plate portion 5a excluding a region that is in conductive contact with the battery terminal 21.

  The portion of the second housing portion 11b that accommodates the circuit protector is covered with the cover 15, and when the cover 15 is opened, the accommodated circuit protector is visible.

  As shown in FIGS. 3 to 6, the fixture locking portion 12 is a small part that is formed separately from the fuse housing 11 and can be attached to and detached from the second housing portion 11 b. A pair of housing connecting portions 31 that are detachably connected to the housing portion 11b are provided, and a pair of fixture support pieces 33 that detachably support the fixing member 14 are provided on the distal end side.

  As shown in FIG. 3, the housing connecting portion 31 has a shape in which a locking projection 31b is provided at the upper end of the elastic piece 31a extending in the vertical direction, and a stopper 31c is provided at the lower end of the elastic piece 31a.

  When the housing connecting portion 31 is inserted from below into a connecting groove 35 formed to extend in the vertical direction on the inner surface of the second housing portion 11b, the upper and lower ends of the partition wall 35a of the connecting groove 35 are It is clamped by the locking projection 31b and the stopper 31c and fixed to the connecting groove 35.

  In the case of the present embodiment, a large number of connecting grooves 35 are formed in the inner surface of the second housing portion 11 b at predetermined arrangement intervals in the width direction of the side surface 3 c of the battery 3. Accordingly, the mounting position of the fixing member locking portion 12 on the second housing portion 11b is changed by changing the connecting groove 35 into which the housing connecting portion 31 is fitted, whereby the width direction of the side surface 3c of the battery 3 (see FIG. 3 (in the direction of arrow X).

As shown in FIG. 3, a plurality of locking portions 37 are arranged on the inner surfaces of the pair of fixture support pieces 33 at a predetermined arrangement interval in a direction orthogonal to the side surface 3 c of the battery 3 (the arrow Y direction in FIG. 3). Is provided.
Each locking portion 37 is a groove for detachably locking the fixing member 14 and is formed to extend in the vertical direction.

  That is, the fixture locking portion 12 of the present embodiment has a configuration in which a plurality of locking portions 37 are provided so that the locking position of the fixing member 14 can be adjusted according to the shape on the battery 3 side. By selecting the position of the locking portion 37 to be used, the projecting dimension of the fixing member 14 from the fixture locking portion 12 can be adjusted to the battery 3.

  For example, in the fuse block 1 shown in FIG. 1 to FIG. 6, the fixing member 14 is the engagement of the position closest to the fuse housing 11 among the plurality of engagement portions 37 provided in the fixture engagement portion 12. It was locked to the stop 37. However, as shown in FIG. 7, when the locking position of the fixing member 14 is changed to the locking portion 37 on the most distal end side on the fixing device locking portion 12, the fixing device locking portion of the fixing member 14 is thereby changed. The projecting dimension L from 12 (see FIG. 8) is increased, and the distance M between the side surface 3c on which the fuse block 1 is mounted and the battery post 3b can be adjusted to the small battery 3.

  Further, the fixture locking portion 12 of the present embodiment is equipped with a connection wall 39 extending vertically between the housing connection portion 31 and the fixture support piece 33.

  As shown in FIGS. 5 and 6, the connecting wall 39 serves to connect the pair of fixture support pieces 33 to each other and when the fixture locking portion 12 is attached to the second housing portion 11 b. A gap 43 through which the cable 41 is inserted is formed between the second housing portion 11 b and functions as a cable holder that holds the cable 41 through the gap 43.

  As shown in FIG. 3, the fixing member 14 is engaged on both sides of the base end portion 50 to engage with the engaging portions 37 of the fixing device engaging portion 12 and connect to the fixing device engaging portion 12. An arm 51 is provided.

  As shown in FIG. 3, the locking arm 51 has a shape in which a locking projection 51b is provided at the upper end of the elastic piece 51a extending in the vertical direction and a stopper 51c is provided at the lower end of the elastic piece 51a.

  When the locking arm 51 is inserted into the locking portion 37 of the fixture locking portion 12 from below, the upper and lower ends of the partition wall of the locking portion 37 are held between the locking projection 51b and the stopper 51c. Then, it is fixed to the fixture locking part 12.

  As shown in FIG. 3, the fixing member 14 of the present embodiment includes a protruding portion 53 extending from the base end portion 50 toward the battery 3, and as shown in FIG. 2, the distal end surface of the protruding portion 53 is provided. The second housing portion 11b is positioned by bringing 53a into contact with the side surface 3c of the battery 3.

  In the fuse block 1 described above, the means for fixing the fuse housing 11 to the battery 3 in order to reduce the load acting on the bus bar 5 and to suppress the vibration is a fixture locking portion 12 provided in the fuse housing 11. This is a fixing member 14 that can be attached to and detached from the battery housing 3. If the dimensions of the battery 3 to be attached change due to a change in the specifications of the battery 3 to be mounted, the fixing member 14 is small without taking a major measure such as remaking the entire fuse housing 11. It is possible to easily cope with this by simply remaking the fixing member 14 as a part.

  For example, by simply preparing a plurality of types of fixing members 14 having different shapes and dimensions, high versatility that can be attached to a plurality of batteries 3 having different mating dimensions can be obtained.

  Further, the fixing device locking portion 12 of the fuse block 1 of the above embodiment is provided with a plurality of locking portions 37 so that the locking position of the fixing member 14 can be adjusted according to the shape of the battery 3 side. It has become.

  Therefore, the dimensions of the battery 3 can be changed in a plurality of ways simply by changing the locking portion 37 on the fixture locking portion 12 that locks the fixing member 14, and only a single type of fixing member 14 is provided. Even if not, high versatility can be obtained that can be satisfactorily attached to a plurality of types of batteries 3 having different mating dimensions.

  Furthermore, in the case of the fuse block 1 of the above embodiment, the fixture locking portion 12 is detachably provided on the second housing portion 11b of the fuse housing 11, so that only the design change of the fixing member 14 described above is required. In addition, it is possible to change the mating dimensions for the battery 3 by changing the design of the fixture locking portion 12 and respond more flexibly to changes in the mating dimensions accompanying changes in the specifications of the battery 3 to be mounted. It becomes possible to do.

  Further, in the case of the fuse block 1 of the above embodiment, since the fixture locking portion 12 also serves as a cable holder, as shown in FIG. The cable 41 to be connected can be fixed in an orderly manner.

  Furthermore, in the case of the fuse block 1 of the above embodiment, the second housing portion 11b is equipped with a plurality of connecting grooves 35 in the width direction of the side surface 3c of the battery 3 so as to detachably connect the fixture locking portion 12. In addition, since the mounting position of the fixing device locking portion 12 can be adjusted in the width direction of the side surface 3c of the battery 3, the fixing device locking portion 12 can be adjusted according to the shape of the battery 3 to be mounted and the cable 41 wiring position. In addition, the position of the fixing member 14 can be adjusted to the optimum position.

  In the fuse block according to the present invention, the specific form in which the fixing member detachably locked to the fuse housing fixes the fuse housing to the battery is not limited to the form shown in the above embodiment. That is, in the above embodiment, the fuse housing is fixed by bringing the front end surface of the fixing member into contact with the side surface of the battery, but the front end portion of the fixing member is fitted to the side surface of the battery or the surrounding structure. It is also possible to fix the front end of the fixing member by screwing it to a structure around the battery.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, 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.

It is a perspective view of the state attached to the battery of one Embodiment of the fuse block which concerns on this invention. It is A arrow directional view of FIG. FIG. 3 is an exploded perspective view of the fuse block shown in FIG. 2. FIG. 4 is a perspective view of the fuse block shown in FIG. 3 in an assembled state and viewed obliquely from above. It is the perspective view which looked at the fuse block shown in FIG. 4 from diagonally downward. It is an enlarged view of the B section of FIG. In the fuse block of one embodiment, it is a perspective view of the state where the attachment position of the fixing member was changed. FIG. 8 is a side view showing a state in which the fixing member shown in FIG. 7 is in contact with the side surface of the battery and the fuse block is positioned on the battery. It is a perspective view which shows the attachment structure to the battery of the conventional fuse block. FIG. 10 is a longitudinal sectional view of the fuse block shown in FIG. 9.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuse block 3 Battery 3a Upper surface 3b Battery post 3c Side surface 3d One ridge part 5 Bus bar 5a Battery connection board part 11 Fuse housing 11a 1st housing part 11b 2nd housing part 12 Fixture latching part 14 Fixing member 15 Cover 21 Battery terminal 21a Stud bolt 21b Post connecting part 21c Plate part for connecting fuse block 31 Housing connecting part 33 Fixing support piece 35 Connecting groove 37 Locking part 39 Connecting wall 41 Cable 43 Clearance 50 Base end part 51 Locking arm 53 Protrusion

Claims (3)

A battery connection plate extending along the upper surface of the battery and conductively connected to the battery post; and a plurality of protections extending from the battery connection plate along the side of the battery and connected to the circuit protector A bus bar integrally formed with a body connecting plate portion with a metal plate;
A plurality of circuit connection terminals made of a metal plate for connection with an electrical circuit connected to the protection body connection plate portion via the circuit protection body,
A resin fuse housing that holds and holds the bus bar, the circuit protector, and the plurality of circuit connection terminals in an L shape across one ridge line portion of the battery;
A fuse block directly attached to the battery,
A fuse block, wherein the fuse housing is provided with a fixing member locking portion for detachably locking a fixing member for positioning the fuse housing to the battery. The said fixing tool latching | locking part is provided with the some latching | locking part so that the latching position of the said fixing member can be adjusted according to the shape by the side of a battery. Fuse block. The fixing device locking portion is detachably provided on the fuse housing, and in a state of being attached to the fuse housing, a gap is formed between the fuse housing and a cable is inserted. 3. The fuse block according to claim 1, wherein the fuse block functions as a cable holder that holds the cable.

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