JP3987467B2 - Joint connector bus bar mating release jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bus bar fitting release jig for a joint connector used for connecting various and complicated electric circuits.
[0002]
[Prior art]
For example, a joint connector used in an automobile harness circuit or the like can be branched and connected from a small number of buses to a large number of child lines, and can be connected at once to a large number of connection terminals.
[0003]
FIG. 10 shows an exploded view of a conventional joint connector, which comprises a housing body 2 that houses the connection terminals 1, a cover 3 that fits opposite to the housing body 2, and a bus bar holder 5 that fixes the bus bar 4. Yes. The cover 3 and the bus bar holder 5 are shown in cross section.
[0004]
As shown in FIG. 11, the bus bar holder 5 is mounted in the cover 3 in advance, and when used, as shown in FIG. 12, the cover 3 is fitted into the housing body 2, the bus bar 4 is connected to the connection terminal 1, A target circuit is formed on the connection terminal 1 side.
[0005]
[Problems to be solved by the invention]
Release of this circuit, that is, removal of the connection terminal 1 and the bus bar 4 can be grasped and pulled out of the housing body 2 without using the cover 3 to fit and remove the bus bar holder 5. It is also conceivable that the bus bar holder 5 is directly fitted into the housing body 2 and pulled out. In this case, since the bus bar holder 5 is small and requires a large force for pulling out, there is no other way than pulling out using a special jig. However, this dedicated jig must always be placed on the operator's hand and is easily lost.
[0006]
An object of the present invention is to solve the above-described problems, and to provide a bus bar fitting release jig for a joint connector that is attached to a part of a cover and always at hand during use.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a bus bar fitting release jig for a joint connector according to the present invention includes a housing body housing a plurality of connection terminals, and a bus bar connected to the connection terminals by fitting into the housing body. A bus bar holder, and a cover that covers the bus bar holder by being fitted to the housing main body in a state in which the bus bar holder is fitted, and a part of the cover that is engaged with a rear portion of the bus bar holder A jig is formed, the pulling jig is engaged with a bus bar holder fitted to the housing body, and the cover is pulled to remove the bus bar holder from the housing body.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail based on the embodiment shown in FIGS.
FIG. 1 shows a cross-sectional view of a joint connector after assembly. The joint connector includes a housing body 11, a bus bar holder 12, and a cover 13. Each base is formed of a synthetic resin.
[0009]
FIG. 2 is a perspective view of the housing main body 11 and the bus bar holder 12 cut vertically. The housing main body 11 mainly includes a connector portion 14 and a hood portion 15 projecting outward from the connector portion 14. A large number of terminal accommodation holes 16 are provided in the connector portion 14, and connection terminals 18 provided with electric wires 17 are inserted into the terminal accommodation holes 16 from behind and locked therein.
[0010]
The connection terminal 18 is locked to the housing main body 11 by engaging a part of the connection terminal 18 with a flexible case lance 19 formed in each terminal receiving hole 16 and then removing the connection terminal 18. I try to prevent it. Further, a cylindrical seal member 20 is inserted into the electric wire 17 so as to seal between the electric wire 17 and the terminal receiving hole 16 and prevent water from entering the housing body 11 from the rear.
[0011]
A guide portion 21 for inserting the bus bar holder 12 is provided on both sides of the connector portion 14, and a locking groove 22 for locking the bus bar holder 12 is provided on the upper portion of the connector portion 14. In addition, a locking claw 23 for locking the cover 13 is provided on the upper portion of the hood portion 15, and a locking portion 24 for fixing the housing main body 11 to a frame or the like not disclosed at the lower portion of the hood portion 15. Is provided. Further, a waterproof rubber 25 is annularly attached to the boundary between the connector portion 14 and the hood portion 15.
[0012]
The bus bar holder 12 has a hood portion 31 at the periphery, and a plurality of tab terminals 32 having a shape as shown in FIG. 3 are projected in three rows and a bus bar 33 connected at the base portion is fixed. After the bus bar 33 is molded on the bus bar holder 12, the base portion of the bus bar 33 is appropriately cut and divided, and connected to the connection terminal 18 mounted on the housing body 11, thereby forming a target circuit on the connection terminal 18 side. It has been made possible.
[0013]
In addition, for each tab terminal 32, a strip-shaped insertion end portion 34 for fixing the case lance 19 of the terminal receiving hole 16 of the housing body 11 protrudes forward. A locking lever 35 is provided on the upper portion of the bus bar holder 12, and a locking claw 36 that locks in the locking groove 22 of the connector portion 14 is formed at the tip thereof. Further, a guide portion (not shown) corresponding to the guide portion 21 of the housing body 11 is provided inside the side portion of the hood portion 31.
[0014]
Further, at the rear part of the bus bar holder 12, a flange part 37 provided on at least both upper side parts for drawing out from the housing main body 1 to be described later, and two withdrawal locking concave parts 38 are formed.
[0015]
FIG. 4 shows a perspective view of the housing main body 11 fitted with the bus bar holder 12 and the longitudinally-covered cover 13. The cover 13 has a hollow portion inside, and protects the bus bar holder 12 from the outside. Plays the role of waterproofing. A lock lever 41 supported at both ends is provided at the top of the cover 13, and a lock claw 42 for locking to the lock claw 23 of the housing body 11 is provided at the tip of the cover 13. A pressing portion 43 is provided on the upper portion of the locking lever 41.
[0016]
Further, a pair of pulling tools 44 and 45 having an L-shaped cross section for pulling out the bus bar holder 12 from the housing main body 11 are formed at the rear part of the cover 13 and act on the locking lever 35 of the bus bar holder 12. A pressing piece 46 is formed. The extraction tool 44 is engaged with the flange portion 37 of the bus bar holder 12, and the extraction tool 45 is engaged with the locking recess 38.
[0017]
FIG. 5 shows a cross-sectional view of a state in which the connection terminal 18 is inserted into the housing body 11. As shown in FIG. 6, the bus bar holder 12 is pushed into the housing body 11 in the state where the connection terminals 18 are accommodated in the respective terminal accommodation holes 16, as shown in FIG. 6. In this process, the locking claw 36 of the locking lever 35 gets over the connector portion 14 and locks in the locking groove 22.
[0018]
4 and 7, when the bus bar holder 12 is fitted into the housing body 11, the tab terminal 32 of the bus bar 33 is inserted into the connection terminal 18 to be electrically connected. At this time, since the insertion end portion 34 enters the lower side of the case lance 19 and pushes up the case lance 19, the state where the case lance 19 locks the connection terminal 18 is fixed, and it is ensured that the connection terminal 18 is prevented from coming out backward. To.
[0019]
At this stage, a conductivity test between the connection terminals 18 can be performed from the electric wire 17 side as necessary. As shown in FIG. 4, when the bus bar 33 is exposed at the rear part of the bus bar holder 12 and the cut state can be visually confirmed, the cut state can be confirmed by visual observation, or the conductive inspection jig is brought into contact with the bus bar 33. Can be inspected.
[0020]
Further, as shown in FIG. 7, after the cover 13 is inserted into the housing body 11 to which the bus bar holder 12 is fixed, the locking claw 42 of the locking lever 41 is locked as shown in FIG. Is completed. In this state, the front end edge of the cover 13 is joined to the waterproof rubber 25 attached to the housing main body 11 to prevent water from entering inside. In this case, it is possible to protect the bus bar holder 12 by preventing the cover 13 from being accidentally dropped from the housing body 11 by locking, and further to ensure a waterproof function. However, the molding accuracy of the cover 13 with respect to the bus bar holder 12 is high. Not much needed.
[0021]
In order to disassemble the joint connector for repair, for example, the pressing portion 43 of the locking lever 41 of the cover 13 is pushed with a finger to release the locking, and the cover 13 is removed from the housing body 11 by pulling backward.
[0022]
Next, as shown in FIG. 8, the cover 13 is turned upside down, the pulling jig 44 provided behind the cover 13 is engaged with the flange portion 37 of the bus bar holder 12, and the pulling jig 45 is engaged with the bus bar holder 12. While engaging with the recess 38, the cover 13 is pushed downward as shown in FIG. As a result, the pressing piece 46 pushes down the rear portion of the locking lever 35 of the bus bar holder 12 and the locking claw 36 is detached from the locking groove 22. If the cover 13 is pulled strongly backward in this state, the bus bar holder 12. Is pulled out of the housing body 11.
[0023]
【The invention's effect】
As described above, the bus bar fitting release jig of the joint connector according to the present invention is attached to the cover so that it is always at hand when the bus bar holder is pulled out from the housing body, so there is a risk of loss. Absent.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a joint connector.
FIG. 2 is a perspective view of a housing body and a bus bar holder.
FIG. 3 is a perspective view of a bus bar.
FIG. 4 is a perspective view of a housing body, a bus bar holder, and a cover.
FIG. 5 is a cross-sectional view of a state in which a connection terminal is inserted into a housing body.
FIG. 6 is a cross-sectional view showing a state where the bus bar holder is fitted to the housing body.
FIG. 7 is a cross-sectional view of a state in which a cover is fitted to a housing body fitted with a bus bar holder.
FIG. 8 is an explanatory view showing a state in which a cover pulling jig is engaged with a bus bar holder.
FIG. 9 is an explanatory view showing a state in which the bus bar holder is pulled out by the cover.
FIG. 10 is an explanatory view of a conventional joint connector.
FIG. 11 is an explanatory diagram of a state in which a bus bar holder of a conventional example is fitted to a cover.
FIG. 12 is an explanatory diagram of an assembled state of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Housing main body 12 Bus bar holder 13 Cover 17 Electric wire 18 Connection terminal 32 Tab terminal 33 Bus bar 35, 41 Locking lever 37 Flange part 38 Locking part 44, 45 Extraction tool 46 Pressing piece

Claims (3)

A housing body housing a plurality of connection terminals, a bus bar holder having a bus bar connected to the connection terminals by fitting to the housing body, and the housing body fitted with the bus bar holder. A cover that covers the bus bar holder, and a pulling jig that engages a rear portion of the bus bar holder is formed in a part of the cover, and the pulling jig is fitted to the bus bar holder that is fitted to the housing body. The bus bar fitting release jig of the joint connector, wherein the bus bar holder is pulled out of the housing body by pulling the cover and pulling the cover. 2. The joint connector bus bar engagement release treatment according to claim 1, wherein when the bus bar holder is pulled out, a lock lever of the bus bar holder is pushed by a part of the cover to release the lock of the bus bar holder with respect to the housing body. Ingredients. 2. The joint connector bus bar fitting according to claim 1, wherein the pulling jig is a first jig that engages with a flange portion of the bus bar holder and a second jig that engages with a pulling recess of the bus bar holder. Joint release jig.

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