JP2001045638A - Electrical equipment mounting block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent thermal damages. SOLUTION: A vertical type bus bar 31 includes a first bus bar body 32, a second bus bar body 33, and a joining member 34. The first and second bus bar bodies 32 and 33 are formed vertically. The joining member 34 is formed between the first and second bus bar bodies 32 and 33. The joining member 34 is formed in a body with the first and second bus bar bodies 32 and 33. The joining member 34 has a C-shaped cross section and is projected above the first and second bus bar bodies 32 and 33. Each bus bar body 32 and 33 is made up of a bending member, bent along a bending line 35 in an extended direction from the bus bar bodies 32 and 33. The joining member 34 has a recessed part 34a at a center, for avoiding interference with a projected part at a relay mounting part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical component mounting block mounted on, for example, an automobile.

[0002]

2. Description of the Related Art Conventionally, there are known electrical component mounting blocks such as junction blocks and relay blocks. FIG. 8 shows a conventional example.

[0003] On the upper surface of the block body 51, a relay mounting portion 52 and a fuse mounting portion 53 are formed. A relay (not shown) is mounted on the relay mounting portion 52, and a fuse 54 indicated by a two-dot chain line in FIG.

On the back side of the block body 51, a first bus bar holding groove 55 and a second bus bar holding groove 56 each having a predetermined pattern are provided as shown by broken lines in FIG. The first bus bar holding groove 55 is provided so as to communicate with each of the terminal insertion portions 52a and 52b of the relay mounting portion 52. The second bus bar holding groove 56 is provided so as to communicate with the terminal insertion portions 52c of the relay mounting portion 52 and the terminal insertion portions 53a to 53c of the fuse mounting portion 53. The busbar holding grooves 55 and 56 accommodate vertical busbars each having a shape corresponding to each pattern.

Therefore, for example, when the bus bar (first bus bar) housed in the first bus bar holding groove 55 is connected to a power source, the bus bar (second bus bar) housed in the second bus bar holding groove 56 has: Power is supplied via a relay.

By the way, in the electric component mounting block, the same block is usually used as much as possible between different models or different grades from the viewpoint of the manufacturing cost of the block body 51 and the like. However, even when the block main body 51 is shared, the number and types of electrical components mounted therein and the wiring patterns may be different. For example, there is a case where the relay is unnecessary and power is directly supplied to the second bus bar. Conventionally,
In this case, a short pin 57 is used as shown by a two-dot chain line in FIG. The first bus bar and the second bus bar are short-circuited by mounting the short pins 57 between the terminal insertion portions 52b and 52c of the relay mounting portion 52.

[0007]

However, when the short pins 57 are used, the number of parts increases. Also, the first
When the short pin 57 is interposed between the bus bar and the second bus bar, two contact points are formed between the two. For this reason,
Due to the electrical contact resistance at these contacts, the contact portions may generate heat. This heat generation may cause heat damage such as deformation of the case body 51.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric component mounting block capable of preventing heat damage.

[0009]

According to the first aspect of the present invention, there is provided an electric component including a block body to which an electric component can be mounted and a bus bar laid on the block main body. In the mounting block, the bus bar includes a plurality of bus bar bodies that are electrically connected to the electrical components, and connection pieces formed integrally with the bus bar bodies, and the connection pieces extend from each of the bus bar bodies. The gist of the present invention consists of a bent piece bent along a bending curve along the direction.

According to the second aspect of the present invention, in the electrical component mounting block according to the first aspect, the connecting piece is provided in the block main body in a state where the electrical component connecting the bus bar main bodies cannot be mounted. The gist is that they are housed.

According to a third aspect of the present invention, in the electrical component mounting block according to the first or second aspect, when the electrical component that connects the bus bar bodies is mounted, the bus bar includes the connecting piece. The gist is to be laid in the block main body in a cut state.

The "action" of the present invention will be described below. According to the invention described in claims 1 to 3, the bus bar
It has a plurality of busbar bodies and connecting pieces formed integrally with the busbar bodies. The connecting piece is formed of a bent piece bent along a bending curve along the direction in which each busbar body extends. Therefore, even when power is directly supplied to each bus bar main body, there is no need to use a short pin or the like, and no contact is generated between the bus bar main bodies. Therefore, it is possible to prevent generation of heat due to the formation of the contact, and to prevent heat damage.

According to the second aspect of the present invention, when the connecting piece is accommodated in the block main body, it becomes impossible to mount electric components connecting the bus bar main bodies. Normally, when the bus bar bodies are connected to each other by connecting pieces, the electrical components are not required. Therefore, erroneous mounting of unnecessary electrical components can be reliably prevented.

According to the third aspect of the present invention, when electrical components connecting the busbar bodies are mounted, the busbar is laid in the block body with the connecting pieces cut off.
For this reason, the bus bar bodies are electrically connected to each other via electrical components. Therefore, a plurality of types of wiring patterns can be formed depending on whether or not the connecting piece is cut.
In other words, a plurality of types of wiring patterns can be formed by one type of bus bar.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a vehicle junction block 1 mounted in an automobile will be described below in detail with reference to FIGS.

FIG. 1A is a plan view of the junction block 1 of the present embodiment, and FIG. 1B is a plan view perspective view showing the inside of FIG. As shown in FIG. 1, the block main body 11 of the junction block 1 as an electrical component mounting block is formed by injection molding a synthetic resin.

On the upper surface of the block body 11, a relay mounting portion 12 as a first component mounting portion and a fuse mounting portion 13 as a second component mounting portion are formed. A relay 14 shown by a two-dot chain line in FIG. The relay mounting portion 12 has four terminal insertion holes 12a to 12d formed therethrough. FIG.
As shown in FIG. 4 and FIG. 4, an allowance portion 16 that allows the lower end 14 a of the relay 14 to enter is provided around the relay mounting portion 12. When the relay 14 is mounted, four terminals (not shown) on the lower surface of the relay 14 are inserted into the terminal insertion holes 12a to 12d. At the same time, the lower end 14a is in a state of entering the allowable portion 16. Two protrusions 12 e are formed on the outer surface of the relay mounting portion 12, and when the relay 14 is mounted on the relay mounting portion 12, these protrusions 12 e and engagement (not shown) provided on the relay 14 are provided. The parts engage with each other. Therefore, the relay 14 is mounted on the relay mounting part 12 in a state where it cannot be pulled out.

The fuse mounting section 13 has two
The mounting of the fuse 15 indicated by the dashed line is possible.
The fuse mounting portion 13 has six terminal insertion holes 13a to 13a.
3f is transparently provided. When the fuse 15 is mounted, two terminals (not shown) on the lower surface of the fuse 15 are inserted into the terminal insertion holes 13a and 13d. In the case of the present embodiment, a maximum of three fuses 15 can be mounted on one fuse mounting portion 13.

As shown in FIGS. 1, 3 and 4, between the relay mounting portion 12 and the fuse mounting portion 13, FIG.
The connection piece housing portion 17 capable of housing the connection piece 34 of the vertical bus bar 31 shown in FIG. The connecting piece housing 17 is provided on the wall 1 protruding from the upper surface of the block body 11.
7a and an accommodation space 17b surrounded by a wall 17a, and the accommodation space 17b is provided to open downward. The connecting piece 34 is accommodated in the accommodation space 17b. The protrusion 12e of the relay mounting portion 12 is in a state of protruding into the accommodation space 17b.

As shown in FIG. 1B, the block body 1
1 has a first holding groove 21 as a first bus bar holding portion.
And a second holding groove 22 as a second bus bar holding portion. The first holding groove 21 is provided so as to accommodate the first bus bar main body 32 of the vertical bus bar 31, and the second holding groove 22 is provided so as to accommodate the second bus bar main body 33 of the bus bar 31. Specifically, each of the holding grooves 21 and 22
3 (b) and FIG. 4 (b), has a groove shape opened downward, and its width is set substantially equal to or slightly larger than the thickness of each busbar main body 32, 33. The first holding groove 21 is provided in communication with the terminal insertion holes 12a and 12b of the relay mounting portion 12. Further, the second holding groove 22 is provided with the terminal insertion hole 12 c of the relay mounting portion 12.
And the respective terminal insertion holes 13a to 13c of the fuse mounting portion 13.
It is provided in communication with. Furthermore, each holding groove 21,
2 is provided in communication with the accommodation space 17b.

The vertical bus bar 31 is connected to the first and second bus bar main bodies 32 and 33 and the connecting piece 3 as described above.
4 is provided. Each busbar body 32, 33 is shown in FIG.
As shown in FIG. 3A, the holding plate 21 is made of a metal plate formed in an upright state, and has a shape corresponding to each of the holding grooves 21 and 22. At one end of the first bus bar main body 32, tab terminals 32a that can be inserted into the respective terminal insertion holes 12a and 12b of the relay mounting portion 12 project upward. The second bus bar body 33 has tab terminals 33a which can be inserted into the terminal insertion holes 12c of the relay mounting portion 12 and the terminal insertion holes 13a to 13c of the fuse mounting portion 13, respectively.
Are projected upward.

The connecting piece 34 is connected to each of the bus bar bodies 32, 33.
At a predetermined location. Specifically, the connecting piece 34
Is formed at a position corresponding to the connection piece housing portion 17 of the block body 11. The connecting piece 34 has a substantially U-shaped cross section, and is formed so as to protrude above the bus bar bodies 32 and 33. At a substantially center of the connecting piece 34, a recess 34 for avoiding interference with the projection 12e of the relay mounting portion 12 is provided.
a is provided.

Such a vertical bus bar 31 is shown in FIG.
As shown in FIG. 2, one metal plate is punched into a predetermined shape and then bent at a position shown by a two-dot chain line in FIG. In particular, the connecting piece 34 is formed by a bent piece bent at a bending curve 35 along the direction in which the bus bar bodies 32 and 33 extend. That is, the connecting piece 34 can be said to be a bent portion of each of the bus bar bodies 32 and 33.

In the junction block 1 configured as described above, the manner in which the vertical bus bar 31 is accommodated differs depending on whether or not the relay 14 is required.
Therefore, the manner of housing the vertical bus bar 31 in each case will be described.

When the relay 14 needs to be mounted, for example,
When a circuit as shown in FIG. 5A is required, the vertical bus bar 31 is housed in the block main body 11 with the connecting piece 34 cut and removed. That is, only the bus bar bodies 32 and 33 are accommodated in the block body 11. More specifically, the connecting piece 34 is cut along a cutting line 36 that is a boundary between the bus bar main bodies 32 and 33 and the connecting piece 34 as shown by a two-dot chain line in FIG. Then, as shown in FIG. 3, only the respective bus bar bodies 32, 33 are accommodated and held in the corresponding holding grooves 21, 22. At this time, the bus bar bodies 32 and 33 are arranged perpendicular to the upper surface of the block body 11. As shown in FIG. 3B, the relay terminals 37 are accommodated in the respective terminal insertion holes 12a and 12b, and the respective tab terminals 32a are attached to the respective relay terminals 37 in a state where they are mounted. Insertion hole 12a,
12b. For this reason, when the relay 14 is mounted on the relay mounting portion 12, each terminal (not shown) of the relay 14 is connected to the first busbar main body 3 via each relay terminal 37.
2 is connected. Although not shown, relay terminals are also accommodated in the terminal insertion holes 12c, 13a to 13c, respectively, and each tab terminal 33a is attached to each of the terminal insertion holes 12c, 13a in a state mounted on the relay terminal. ~ 13
c. For this reason, the terminal of the relay 14 and the terminal of each fuse 15 are connected to the second bus bar main body 33 via each relay terminal. Therefore, the first bus bar 3
When a power supply is connected to the first busbar 1, when a current flows through the coil of the relay 14, the first busbar main body 32 and the second busbar main body 33 conduct. That is, the first busbar main body 32 and the second busbar main body 33 are connected via the relay 14.

On the other hand, when the relay 14 is not required to be mounted and power is directly supplied to each fuse 15, for example, when a circuit as shown in FIG. 5B is required, the vertical bus bar 31 Connection piece 3 between busbar bodies 32 and 33
It is accommodated in the block main body 11 in a state of being connected by 4. That is, as shown in FIG. 4, the connecting piece 34 is housed in the housing space 17b of the connecting piece housing portion 17. Therefore, the first holding groove side and the second holding groove 22 side are always in a conductive state. Therefore, power can be directly supplied to the fuse 15.

Since the connecting piece 34 is provided with the recess 34a, the connecting piece 34 can be accommodated in the connecting piece accommodating portion 17 without the protrusion 12e of the relay mounting portion 12 being in the way. . Then, when the storage of the connection piece 34 is completed, as shown in FIG. 4, the protrusion 12 e is in a state of being surrounded by the connection piece 34. Therefore, as shown in FIG. 4B, when the relay 14 is to be mounted on the relay mounting portion 12 in this state, the lower end 14a of the relay 14 is connected to the connecting piece 34.
Collide with Therefore, mounting of the relay 14 on the relay mounting portion 12 becomes impossible. That is, the connection piece 34 is housed in the connection piece housing 17 in a state where the relay 14 cannot be mounted on the relay mounting section 12.

Therefore, according to the present embodiment, the following effects can be obtained. (1) The vertical bus bar 31 includes first and second bus bar main bodies 32 and 33 and a connecting piece 34 connecting the bus bar main bodies 32 and 33 to each other. The connecting piece 34 is formed of a bent piece in which a part of each of the bus bar bodies 32 and 33 is bent along a bending curve 35 along the direction in which the main bodies 32 and 33 extend. That is, each of the bus bar bodies 32 and 33 and the connecting piece 34 are integrally formed. Therefore, even when power is directly supplied to the bus bar bodies 32 and 33, there is no need to use a short pin or the like, and no contact is generated between the bus bar bodies 32 and 33. Therefore, it is possible to prevent generation of heat due to the formation of the contact, and to prevent heat damage.

(2) The connecting piece 34 is housed in the connecting piece housing 17 in a state where the mounting of the relay 14 is disabled. For this reason, erroneous mounting such as mounting the relay 14 on the relay mounting portion 12 can be reliably prevented even when power is directly supplied to the second bus bar main body 33.

(3) By cutting and removing the connecting piece 34, the bus bar bodies 32 and 33 can be electrically separated from each other. Therefore, according to such a vertical bus bar 31, a plurality of types of wiring patterns can be formed depending on the presence or absence of the connecting piece 34.

(4) As the bus bar to be laid on the block body 11, a vertical bus bar 31 is used. Since the vertical bus bar 31 is formed with the bus bar main bodies 32 and 33 standing upright, the laying space of the bus bar can be reduced as compared with the case where the horizontal bus bar is used. Therefore, the block main body 11 can be formed small.

(5) The protruding portion 12 e formed on the outer surface of the relay mounting portion 12 protrudes into the connecting piece accommodating portion 17. However, since the connecting piece 34 is provided with the concave portion 34a, the connecting piece 34 can be accommodated in the connecting piece accommodating portion 17 without the protrusion 12e of the relay mounting portion 12 being in the way. When the storage of the connecting piece 34 is completed, the protruding portion 12e is surrounded by the connecting piece 34. Therefore, when the relay 14 is to be mounted on the relay mounting portion 12 in this state, the lower end 14 a of the relay 14
Crash reliably. Therefore, the mounting of the relay 14 on the relay mounting portion 12 can be reliably prevented.

The embodiment of the present invention may be modified as follows. As shown in FIG. 6A, each busbar body 32, 3
Near the boundary between the connecting piece 3 and the connecting piece 34, a notch 46 may be provided so that the connecting piece 34 becomes narrower.

As shown in FIG. 6B, near the boundary between each bus bar main body 32, 33 and the connecting piece 34, the connecting piece 3
4 may be provided with notch portions 47 each having a small thickness. Note that FIG. 3 shows only a boundary portion between the second bus bar main body 33 and the connecting piece 34.

According to each of the above structures, the notches 46, 4
The connecting piece 34 can be easily cut at the position where the 7 is provided. In the above-described embodiment, the connection piece 34 is formed so as to protrude above the bus bar bodies 32 and 33. However, as shown in FIG. 7, the connecting piece 34 may be formed in a state where the lower ends of the bus bar bodies 32 and 33 are connected to each other. With this configuration, it is not necessary to provide the connection piece housing 17 in the block main body 11, and the main body 11 can be easily formed.

The connecting piece housing portion 17 is not limited to the one including the wall portion 17a and the housing space 17b.
What is necessary is just to be able to accommodate one connection piece 34. That is, the connecting piece housing portion 17 may be configured such that the wall portion 17a is omitted and only the housing space 17b is provided.

The first component mounting section is a relay mounting section 12
The present invention is not limited to this, and other components such as a fuse mounting portion and a connector housing may be mounted. Further, the second component mounting section is not limited to the fuse mounting section 13, but may be a section for mounting another component such as a relay mounting section or a connector housing.

The bus bar is not limited to the vertical bus bar 31 in the above embodiment, and a horizontal bus bar may be used. Next, in addition to the technical ideas described in the claims, technical ideas grasped by the above-described embodiments will be listed below.

(1) In the electrical component mounting block according to claim 3, a notch is provided at a boundary between the bus bar main body and the connecting piece. According to the invention described in the technical concept (1), the connection piece can be easily cut at the cutout portion.

(2) Claims 1 to 3, technical idea (1)
In the electrical component mounting block according to any one of the above,
The bus bar is a vertical bus bar that is laid in a state where each of the bus bar bodies stands upright in the block body.

(3) In the electrical component mounting block according to any one of the first to third aspects and the technical ideas (1) and (2), the connecting piece protrudes above each of the bus bar bodies. Being provided in state.

(4) Claims 1 to 3, Technical idea (1)
In the electrical component mounting block according to any one of (1) to (3), the block main body includes a first component mounting portion and a second component mounting portion each capable of mounting a predetermined electrical component, and the first component mounting. A first busbar holding portion for holding the busbar body connecting the component side and the power supply side, and a first busbar holding portion for holding the busbar body connecting the first component mounting portion side and the second component mounting portion side. (2) a bus bar holding portion, and a connection piece housing portion which is capable of housing the connection piece in the vicinity of the first component mounting portion in a state in which electrical components to be mounted on the first component mounting portion cannot be mounted. Be prepared.

(5) In the electrical component mounting block according to the technical concept (4), the first component mounting portion is provided with the projection that can be engaged with the electrical component to be mounted on the mounting portion. The connecting piece of the bus bar is provided so as to protrude into the piece accommodating portion, and a recess for avoiding interference with the protruding portion is provided. According to the invention described in the technical concept (5), when power is directly supplied to the second component mounting portion, it is possible to reliably prevent the mounting of the electrical component to be mounted on the first component mounting portion. it can.

[0044]

As described in detail above, according to the first to third aspects of the present invention, the occurrence of heat damage can be prevented.

According to the second aspect of the present invention, it is possible to reliably prevent erroneous mounting of electrical components connecting the bus bar bodies. According to the third aspect of the present invention, a plurality of types of wiring patterns can be configured by one type of bus bar.

[Brief description of the drawings]

FIG. 1A is a plan view showing a part of a junction block according to an embodiment of the present invention, and FIG. 1B is a plan perspective view showing the inside of FIG.

FIG. 2A is a perspective view of a vertical bus bar used in the junction block of the embodiment, and FIG. 2B is an expanded view thereof.

FIG. 3A is a perspective plan view showing the inside of the junction block according to the same embodiment, and FIG. 3B is a perspective view of FIG.
-A line sectional drawing.

FIG. 4A is a perspective plan view showing the inside of the junction block according to the same embodiment, and FIG.
-A line sectional drawing.

FIG. 5 is an electric circuit diagram showing an example of a circuit of an electrical component mounted on the junction block of the embodiment.

FIG. 6 is a perspective view showing a vertical bus bar according to another embodiment.

FIG. 7 is an enlarged perspective view showing a part of a vertical bus bar according to another embodiment.

FIG. 8 is a plan view showing a part of a conventional junction block.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Junction block as electrical component mounting block, 11 ... Block main body, 12 ... Relay mounting portion as 1st component mounting portion, 13 ... Fuse mounting portion as 2nd component mounting portion, 14 ... Relay, 15 ... Fuse DESCRIPTION OF SYMBOLS 17 ... Connection piece accommodating part, 17a ... Wall part, 17b ... Accommodating space, 21 ... 1st holding groove as a 1st busbar holding part, 22 ... 2nd holding groove as a 2nd busbar holding part, 31 ... Vertical busbar ,
32: first bus bar main body, 33: second bus bar main body, 3
4 ... connecting piece, 34a ... recess, 35 ... folding curve, 36 ... cutting line, 46, 47 ... notch.

Claims (3)

[Claims] 1. An electric component mounting block comprising a block main body on which electric components can be mounted, and a bus bar laid on the block main body, wherein the bus bar includes a plurality of bus bar main units electrically connected to the electric components. And a connecting piece formed integrally with the bus bar body, wherein the connecting piece is formed of a bent piece bent along a bending curve along a direction in which each of the bus bar bodies extends. Electrical component mounting block. 2. The electric component mounting block according to claim 1, wherein the connection piece is accommodated in the block main body in a state where electric components connecting the bus bar main bodies cannot be mounted. . 3. The bus bar is laid in the block main body in a state where the connecting piece is cut off when an electrical component connecting the bus bar main bodies is mounted. 3. The electrical component mounting block according to 2.