JPH0729576Y2 - Insulation plate with guide for relay terminal in junction box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an insulating plate with a guide for a relay terminal in a junction box.

[Prior Art] A connection box used as an automobile part is formed by alternately stacking a busbar made of copper or copper alloy with an insulating plate in a maximum of 10 layers and bending a part of the busbar through a relay terminal. The tabs are connected to electrical parts such as relays and fuses.

As shown in FIGS. 5 and 6, the assembly method of such a junction box is as follows. After the relay terminal 3 is assembled in the relay terminal accommodating chamber 2 of the case 1 of the junction box, the insulation plate 4'is formed. Bus bar 5 on top
And the tab 5A of the bus bar 5 is inserted into the connection hole 3A of the relay terminal 3 from the bus bar tab insertion hole 6'of the insulating plate 4 '. In this case, the connection hole of the relay terminal 3
The tab 5A of the bus bar 5 is inserted into 3A from above, and the fuse or the like is inserted from below, so that the curl portions 3B of the relay terminal 3 can be electrically connected by the spring property.

[Problems to be Solved by the Invention] However, between the case 1 of the junction box and the relay terminal 3, clearances 7A, 7B are provided on either or both of the back side 3C and the ventral side 3D of the relay terminal 3. There is a problem that the tab 5A of the bus bar 5 is erroneously inserted into the clearances 7A and 7B. When inserted incorrectly, the tab on the busbar 5
5A and relay terminal 3 can easily lead to poor electrical connection,
This will lead to a significant decrease in reliability.

An object of the present invention is to provide an insulating plate with a guide for a relay terminal in a connection box, which can surely prevent erroneous insertion of a tab of a bus bar.

[Means for Solving the Problems] The structure of the present invention for achieving the above object will be described. The present invention is used for inserting a bus bar tab into a connection hole of a relay terminal incorporated in a case of a connection box. The relay terminal insulating plate in the connection box has an insulating plate body formed of an electrically insulating material, and the insulating plate body has a bus bar tab insertion hole at a position corresponding to the connecting hole of the relay terminal in the case. Adjacent to the bus bar tab insertion hole, a relay terminal positioning portion is provided on the insulating plate body, which positions the relay terminal so that the connection hole of the relay terminal is aligned with the bus bar tab insertion hole. It is characterized by being provided.

[Operation] In such an insulating plate with a guide, when the insulating plate body is set on the case of the connection box, the connecting hole of the relay terminal is formed by the positioning action of the relay terminal positioning portion provided in the insulating plate body. The relay terminal is positioned so as to match the bus bar tab insertion hole of the insulating plate body.
In this state, the bus bar tab can be guided by the bus bar tab insertion hole of the insulating plate body to be surely inserted into the connection hole of the relay terminal. Therefore, erroneous insertion of the busbar tab can be reliably prevented.

[Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The parts corresponding to those in FIGS. 5 and 6 described above are designated by the same reference numerals.

1 to 4 show a first embodiment of the present invention. In this embodiment, in order to prevent erroneous insertion, the insulating plate 4 with a relay terminal guide in the connection box is used. The insulating plate with guide 4 has an insulating plate body 8 formed of an electrically insulating material, and the insulating plate body 8 has a bus bar tab insertion hole at a position corresponding to the connection hole 3A of each relay terminal 3 in the case 1. 6 are provided respectively. The bus bar tab insertion hole 6 has an outlet size that substantially matches the size (width) of the minimum portion of the connection hole 3A in the relay terminal 3, and the inlet is formed in a tapered shape larger than the outlet. . Insulating plate body 8
On the back surface of the relay terminal positioning portion 10, which is formed by a projection that is brought into contact with the relay terminal 3 so that the connection hole 3A of the relay terminal 3 is aligned with the bus bar tab insertion hole 6 of the insulating plate body 8, The bus bar tab insertion holes 6 are provided so as to be adjacent to each other. Each relay terminal positioning portion 10 is, for example, inserted into a gap between both curl portions 3B of the relay terminal 3 and abutted on the relay terminal 3, whereby the connection hole 3A of the relay terminal 3 is inserted into the bus bar tab of the insulating plate body 8. Positioning is performed so as to match the insertion hole 6.

Next, a method of assembling a junction box using such an insulating plate with a guide 4 will be described. Relay terminal accommodating chamber 2 of case 1
After inserting the relay terminal 3 therein, the insulating plate 4 with a guide is placed on the case 1 as shown in FIGS. 1 and 2. At this time,
The relay terminal positioning portions 10 provided on the lower surface of the insulating plate body 8 are inserted into the gaps between the curls 3B of the relay terminals 3 to position the relay terminals 3. As a result, the connection holes 3A of the relay terminals 3 are aligned with the bus bar tab insertion holes 6 of the insulating plate body 8.

Thereafter, as shown in FIG. 3, the bus bar 5 is placed on the insulating plate with guide 4, and the tab 5A of the bus bar 5 is inserted from the bus bar tab insertion hole 6 of the insulating plate with guide 4. With this arrangement, the bus bar tab insertion hole 6 of the insulating plate with guide 4 and the connection hole 3A of the relay terminal 3 are aligned with each other, so that the tab 5A of the bus bar 5 is definitely inserted into the connection hole 3A of the relay terminal 3. Will be done.

[Advantage of the Invention] As described above, the insulating plate with guide for relay terminal in the connection box according to the present invention is brought into contact with the relay terminal so that the connection hole of the relay terminal is aligned with the bus bar tab insertion hole of the insulating plate body. Since the relay terminal positioning portion for positioning is provided adjacent to the bus bar tab insertion hole of the insulating plate body, the tab of the bus bar can be reliably inserted into the connection hole of the relay terminal by being guided by the bus bar tab insertion hole. . In particular, in the present invention, an insulating plate required to insulate the relay terminal from the bus bar is used, and the relay terminal positioning portion is only provided on the insulating plate body of the insulating plate. Therefore, the number of stacked layers does not increase. Therefore, there is an advantage that it can be carried out without increasing the thickness of the junction box.

[Brief description of drawings]

1 and 2 are a longitudinal sectional view and a plan view showing a state in which an insulating plate with a guide according to an embodiment of the present invention is stacked on a case and a relay terminal of a connection box, and FIG. 3 uses an insulating plate with a guide. FIG. 4 is a vertical sectional view showing a state in which the tab of the bus bar is inserted into the connection hole of the relay terminal, FIG. 4 is a bottom view showing an example of the insulating plate with a guide according to the present invention, and FIG. Floor plan, No. 6
FIG. 1 is a perspective view showing a state in which a relay terminal is accommodated in a conventional connection box. 1 ... Case, 2 ... Relay terminal accommodating chamber, 3 ... Relay terminal, 3A ... Connection hole, 3B ... Curl part, 3C ... Back side, 3D ...
… Abdominal side, 4 …… Insulation plate with guide, 4A …… Tab, 5 …… Bus bar, 6 …… Bus bar tab insertion hole, 7A, 7B …… Clearing, 8 …… Insulation plate body, 10 …… Relay terminal positioning part .

Claims (1)

[Scope of utility model registration request] 1. An insulating plate for a relay terminal in a connection box used when inserting a bus bar tab into a connection hole of a relay terminal incorporated in a case of the connection box, the insulating plate main body being formed of an electrically insulating material. A bus bar tab insertion hole is provided in the insulating plate main body at a position corresponding to the connection hole of the relay terminal in the case, and the insulating plate main body is brought into contact with the relay terminal so as to contact the relay terminal. An insulating plate with a guide for a relay terminal in a connection box, wherein a relay terminal positioning portion that positions the connection hole so as to match the bus bar tab insertion hole is provided adjacent to the bus bar tab insertion hole.