JPH0745911Y2 - Intermediate connection terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an intermediate connection terminal used in an electrical junction box.

[Conventional technology]

As shown in FIG. 5, an intermediate connecting terminal used in a conventional electric junction box is formed by punching out a protruding contact piece punched at the tip of a bottom plate 21 and folding it inwardly to form a contactor 22. A blade receiving part 20 formed by bending both sides of the bottom plate 21 into a rectangular tube shape so as to wrap it, and a bottom plate 21 continuous with the blade receiving part 20.
The sleeve receiving members formed by punching the sleeve pieces punched on both sides inward are bent inward in a semi-circular shape and the blade receiving portions 25 having the contacts 26, 26 are continuously and integrally provided in the longitudinal direction. It is also found in Japanese Kokoku 59-34064. As for this intermediate connection terminal, as shown in FIG. 6, a blade terminal A of a bus bar is inserted and connected to the blade receiving portion 25, and a blade terminal B of a blade type fuse is inserted and connected to the blade receiving portion 20.

In addition, like the relay terminal for the plate fuse device of Japanese Utility Model Publication No. 56-86776, on the side connected to the terminal part of the plate fuse, face the middle of the back plate from the upper or lower end of the back plate. A curved elastic flat plate portion, and a fixed flat plate portion with an insertion guide that extends from both left and right sides of the back plate portion so as to embrace it, bends, and faces each other at the center,
The terminal portion of the plate fuse is elastically sandwiched between the elastic flat plate portion and the fixed flat plate portion, and on the side connected to the plate-like terminal portion such as the bus bar, the cross section is arcuate from the left and right sides of the back plate portion. It has a curved elastic plate portion, and one metal piece so that a plate-shaped terminal portion such as a bus bar can be elastically sandwiched between the curved portion of the elastic plate portion and the back plate portion. Relay terminals for plate fuse devices formed from plates are known.

Further, like the tab receptacle of Japanese Utility Model Laid-Open No. 58-117081, a pair of supporting plate portions that are integrally connected via a connecting piece are opposed to each other, and the end portions of elastic contact pieces extending from both ends of one supporting plate portion are opposed to each other. Bending inward at a half position of the distance between the supporting plate portions to form a locking portion, and bending all of the elastic contact pieces inside the supporting plate portion and between the elastic contact piece and the other supporting plate portion. 2. Description of the Related Art Tab receptacles for tab mounting, which are configured in plural, are known.

[Problems to be solved by the device]

The intermediate connection terminal constructed as shown in FIGS. 5 and 6 has the blade terminal A of the bus bar which is inserted into the blade receiving portion 25 and has a width of 5 mm or more. The bending radius R of the contacts 26, 26 can be set large according to the width,
Although the spring force and the amount of deflection sufficient to reliably press the blade terminal A of the bus bar against the bottom plate 21 can be obtained, the blade fuse is downsized and the width of the blade terminal B of the blade fuse is reduced.
Since it is extremely small at 3 mm or less and the width of the blade terminal A of the bus bar is also as small as 3 mm or less, the contactor 2 formed on the blade receiving portion 25 according to the width of the blade terminal A of the bus bar 2
If the bending radii R of 6 and 26 are reduced, the amount of bending of the contactors 26 and 26 will be reduced, and not only a predetermined spring force will not be obtained, but also if contacting force acts on the contactors 26 and 26.
There was a problem that 26, 26 could be plastically deformed so that they could easily open outward, causing various electrical accidents due to poor contact.

In addition, the relay terminal for the plate fuse device disclosed in the utility model has the same problem as described above because it has the same configuration as the configuration shown in FIGS. 5 and 6 described above. The board relay terminal engages the second folded tongue piece with the concave portion of the wiring board when the wiring board is pulled in the direction of extraction, and when the force in the opposite direction is applied to the relay terminal, the relay terminal is relayed. Since the terminal moves to the front of the housing and the push-up piece of the first folded back tongue piece has to be engaged with the step portion, it is not easy to always engage these engagements accurately, and it is easy to disengage. There is.

Further, in the tab receptacle disclosed in the above-mentioned utility model, since the elastic contact piece is simply bent, there is a problem that the elastic holding force for holding the inserted tab terminal is weak and the tab receptacle is easily removed.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide an intermediate connection terminal having stable electrical characteristics over time.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the intermediate connection terminal of the present invention is provided with two parallel linear cutouts 4b, 4c in the longitudinal direction on one bottom plate half 3a of the narrow rectangular bottom plate part 3, and The elongated plate portion 4a between the linear cut portions 4b and 4c is curved upward to form the elastic curved contact piece portion 4, and the side plate portions 7a on both sides of the bottom plate half portion 3a are formed.
7a is bent into a rectangular tube shape, and both plate edges are abutted above the elastic curved contact piece portion 4 to form upper plate portions 7c and 7d, and the abutted upper plate portions 7c and 7d are punched downward and bulged. The bulging contact portions 5 and 5 are formed to provide the first blade receiving portion 2, and the elongated protruding piece 11a protruding from the end portion of the other bottom plate half portion 3b of the narrow rectangular bottom plate portion 3 is folded back inward. Contact piece 11
The side plate portions 7b, 7b on both sides of the bottom plate half 3b are bent into a rectangular tube shape, and both plate edges are abutted above the folding contact piece 11 to form upper plate portions 7e, 7f. A blade receiving portion 10 is provided, and the first blade receiving portion 2 and the second blade receiving portion 10 are continuously and integrally provided in the longitudinal direction.

[Action]

The elastic curved contact piece portion 4 formed by bending the elongated plate portion 4a between the two parallel linear cut-off portions 4b and 4c of the bottom plate portion of the first blade receiving portion 2 upward is formed into a thin rectangular bottom plate. Since it is supported by the portion 3, its spring force is increased, and when the plug blade terminal A of the bus bar is inserted into the first blade receiving portion 2 against the spring force of the elastic curved contact piece portion 4, the elastic curved contact piece 4 is inserted. The portion 4 bends downward, and the repulsive spring force causes the blade terminal A of the bus bar to be elastically pushed and contact the first blade receiving portion 2, and the elastic curved contact piece portion 4 and the upper plate portion 7c,
It is firmly clamped and held between 7d.

Further, the folding contact piece 11 formed by folding back the elongated protruding piece 11a of the second blade receiving portion 10 inwardly is inserted into the blade contact B of the blade-type fuse against the spring force of the folding contact piece 11. The return contact piece 11 bends downward and the repulsive spring force causes the blade terminal B of the blade-type fuse to be elastically pressed and contacted by the second blade receiving portion 10, and the return contact piece 11 and the upper plate portions 7e, 7f Holds tightly between them. Thus, the first blade receiving portion 2 of the intermediate connection terminal 1
The second blade receiving portion 10 electrically connects the bus bar and the blade-type fuse.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. 3 is a development view, in which 1 is a first blade receiving portion 2
An intermediate connection terminal in which a second blade receiving portion 10 and a second blade receiving portion 10 are continuously and integrally provided in the longitudinal direction. As shown in FIG. 3, each portion formed by punching out a conductive metal plate such as a copper alloy is bent and configured. .

As shown in FIG. 3, a conductive metal plate such as a copper alloy is punched to be divided into one bottom plate half 3a of the narrow rectangular bottom plate 3 and the other bottom plate half 3b. The portion 3a is provided with two parallel linear cut portions 4b and 4c in the longitudinal direction, and the elongated plate portion 4a between the parallel linear cut portions 4b and 4c is bent upward to elastically bend the contact piece portion. 4, forming side plates on both sides of the bottom plate half 3a
Upper plate portions 7c and 7d are connected to 7a and 7a.

As shown in FIG. 3, the other bottom plate half 3b is provided with an elongated projecting piece 11a from its end, and upper plate parts 7e, 7f connected to the side plate parts 7b, 7b on both sides of this bottom plate half 3b. To line up.

By bending the above-mentioned punched-out conductive metal plate, one bottom plate half 3a of the narrow rectangular bottom plate 3 is provided with two parallel linear cut-off portions 4b, 4c in the longitudinal direction on the bottom plate half 3a. The slender plate portion 4a between the parallel linear cut portions 4b and 4c is curved upward to form the elastic curved contact piece portion 4, and the side plate portions 7a and 7a on both sides of the bottom plate half portion 3a are bent into a rectangular tube shape. Both plate edges are butted above the elastic curved contact piece portion 4 to form butted upper plate portions 7c, 7d, and the swollen contact portion 5, which is punched downward and swollen at the butted upper plate portions 7c, 7d, Forming 5 first
The blade receiving portion 2 is configured.

In addition, in the other half of the bottom plate half 3b of the thin rectangular bottom plate part 3, the elongated projection piece 11a protruding from the end is folded back inward to form a folded contact piece 11, and side plates on both sides of the bottom plate half 3b. The parts 7b, 7b are bent into a rectangular tube shape, and both plate edges thereof are butted against each other above the folding contact piece 11, and the butted upper plate parts 7e, 7f are joined together.
To form the second blade receiving portion 10.

The first blade receiving portion 2 and the second blade receiving portion 10 are continuously and integrally provided in the longitudinal direction as shown in the figure to form the intermediate connection terminal 1 of the present invention.

Reference numerals 6 and 12 denote terminal guide portions, which are formed by bending the projecting piece 2a at the tip of the side plate portion 7a and the projecting piece 10a at the tip of the side plate portion 7b shown in FIG.

With the intermediate connection terminal 1 of the present invention configured as described above, the blade terminal A of the bus bar and the blade terminal B of the blade type fuse
In order to electrically connect the plug blade terminal A of the bus bar into the first blade receiving portion 2 as shown in FIG.
When it is inserted against the spring force, the elastic curved contact piece portion 4 bends downward, and the repulsive spring force causes the blade terminal A of the bus bar to bulge downward to the upper plate portions 7c and 7d of the first blade receiving portion 2. The bulged contact portions 5 and 5 and the elastic curved contact piece portion 4 are elastically pressed to securely and firmly clamp the electrical and mechanical force.

When the blade terminal B of the blade-type fuse is inserted into the second blade receiving portion 10 against the spring force of the folded contact piece 11, the folded contact piece 11 bends downward and the repulsive spring force of the blade-type fuse causes the folded contact piece 11 to move. The blade terminal B is elastically pinched and held between the upper plate portions 7e and 7f of the second blade receiving portion 10 and the folded contact piece 11.

As described above, the blade terminal A of the bus bar is pinched and held by the first blade receiving portion 2, and the blade terminal B of the blade type fuse is pinched and held by the second blade receiving portion 10, so that the bus bar and blade Type fuse is electrically connected.

The elastic curved contact piece portion 4 of the first blade receiving portion 2 is formed by curving the elongated plate portion 4a between the parallel linear cut portions 4a and 4b upward, and the second blade receiving portion 10 has a folded contact. Since the piece 11 is formed by folding an elongated projecting piece 11a projecting from the end of the bottom plate half 3b into an inner package, it can be appropriately designed in the length L direction according to the required amount of bending and the spring force. Therefore, even if the blade-type fuse is downsized and the widths of the blade terminal B and the blade terminal A of the bus bar are reduced, the blade fuse can be pressed and held with sufficient pressure.

In addition, the elastic curved contact piece portion 4 provided in the first blade receiving portion 2
Since both ends thereof are supported by the thin rectangular bottom plate portion 3, the spring force thereof is increased and the holding force of the blade terminal A of the bus bar is increased.

[Effect of device]

According to the present invention, as described above, the elastic curved contact piece portion 4 formed by bending the elongated plate portion 4a between the parallel line-shaped cut portions 4b and 4c of the bottom plate portion of the first blade receiving portion 2 upwardly. , And the second blade receiving portion 10
The folding contact piece 11 can be appropriately designed so as to obtain the required bending amount and spring force in the length L direction, so that the blade type fuse is downsized, and the blade terminal and the bus bar stopper. Even if the width of the blade terminal becomes small, it can be pressed and held with a sufficient pressure contact force, and an intermediate connection terminal having stable electrical characteristics over time can be obtained.

In addition, the elastic curved contact piece portion 4 provided in the first blade receiving portion 2
Since both ends thereof are supported by the thin rectangular bottom plate portion 3, its spring force is increased, and the blade terminal of the bus bar that requires almost no insertion / removal can be mechanically and firmly held. is there.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view, FIG. 3 is a developed view, FIG. 4 is an explanatory view showing a state of use, and FIGS. FIG. 3 is a perspective view showing the intermediate connection terminal of FIG. 4 and an explanatory view showing its usage state. 1: Intermediate connection terminal 2: First blade receiving part 3: Thin rectangular bottom plate part 3a, 3b: Bottom plate half part 4: Elastic curved contact piece part 4a: Elongated plate part 4b, 4c: Parallel line cut part 5: Expansion Outgoing contact portions 7a, 7b: Side plate portions 7c, 7d, 7e, 7f: Upper plate portion 10: Second blade receiving portion 11: Folding contact piece 11a: Elongated protruding piece

Claims (1)

[Scope of utility model registration request] 1. A parallel rectangular cutout (4b), (4) in the longitudinal direction on one bottom plate half (3a) of a narrow rectangular bottom plate (3).
c) is provided, and the elongated plate portion (4a) between the parallel linear cut portions (4b) and (4c) is curved upward to form an elastic curved contact piece portion (4), and the bottom plate half ( The side plate portions (7a) and (7a) on both sides of (3a) are bent into a rectangular tube shape, and both edge plate portions thereof are abutted above the elastic curved contact piece portion (4) to form upper plate portions (7c) and (7d) To form the butt upper plate (7
c), (7d) is formed with bulging contact portions (5), (5) that are bulged downward and provided with a first blade receiving portion (2), and the other of the narrow rectangular bottom plate portion (3) Of the bottom plate half (3b) of the bottom plate is folded back inward to form a folded contact piece (11), and side plate parts (7b) on both sides of the bottom plate half (3b) are formed. , (7b) are bent into a rectangular tube shape, and their plate edges are abutted above the folded contact piece (11) to form upper plate portions (7e) and (7f) to provide a second blade receiving portion (10). An intermediate connection terminal, wherein the first blade receiving portion (2) and the second blade receiving portion (10) are continuously and integrally provided in the longitudinal direction.