JPH0629016U - Intermediate connection terminal - Google Patents

Abstract

(57) [Summary] [Structure] The projecting tongues formed by punching on the upper and lower ends of the conductive metal plate are respectively bent inward to form contact pieces 3 and 3, and the left and right sides of the contact pieces 3 and 3 are formed. The upper and lower surfaces were bent into a rectangular tube shape to form vertically symmetrical blade receiving portions 2, 2 to form an intermediate connection terminal. [Effect] By forming the upper surfaces of the blade receiving portions 2 and 2 in two layers, the cross-sectional area and surface area are increased, the resistance value is reduced, and the heat dissipation effect is increased, so that the intermediate connection terminals generate heat during use. There is no possibility of this happening, and an intermediate connection terminal having stable electrical characteristics over the years can be obtained.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an intermediate connection terminal used in an electric connection box mounted in a vehicle.

[0002]

[Prior art]

 Conventionally, as shown in FIGS. 5 and 6, an intermediate connection terminal used in an electric connection box mounted in an automobile has protruding tongue pieces 23a, 23a formed by punching at both upper and lower ends, which are bent inward to make contact with each other. Forming the pieces 23, 23, the left and right sides of the bottom plate 22a continuous with the contact pieces 23, 23 so as to wrap the contact pieces 23, 23 are bent upward at a right angle from the position indicated by the dotted line a to form the side plate 22b, The side plates 22b are horizontally bent inward from the positions indicated by the dotted lines b, the side faces c, c are brought into contact with each other to form the upper face 22c, and the upper and lower symmetrical rectangular cylindrical blade receiving portions 22, 22 are formed. Was configured.

[0003]

[Problems to be solved by the device]

 However, in recent years, the terminal width of blade-type fuses has tended to be reduced to 2.8 mm (the conventional blade-type fuse has a terminal width of 5.25 mm), and at the same time, the size of intermediate connection terminals has also tended to be reduced. It is in. However, if the conventional intermediate connection terminal 20 described above is downsized according to the terminal width of the blade-type fuse and the same current as that of the conventional case is passed, the blade receiving portions 22, 22 have a small cross-sectional area and surface area. There was a problem in that quality-satisfactory performance could not be obtained in terms of temperature, such as heat generation.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an intermediate connection terminal having stable electrical characteristics over time.

[0005]

[Means for Solving the Problems]

 According to the present invention, the protruding tongues 3a, 3a formed by punching on the upper and lower ends of the conductive metal plate are bent inward to form the contact pieces 3, 3, and the left and right sides of the contact pieces 3, 3 have upper surfaces. This is to solve the conventional problems by forming a middle and indirect connection terminal 1 by forming the blade receiving portions 2 and 2 which are vertically symmetrical by bending into a rectangular tube shape so as to form two layers.

[0006]

[Action]

 A tab of a bus bar arranged in the electric connection box is inserted and connected to one blade receiving portion 2, and a blade-type fuse terminal is inserted and connected to the other blade receiving portion 2. Since the upper surfaces of the blade receiving portions 2 and 2 are formed in two layers and have a large cross-sectional area and surface area, the resistance value is small and the heat radiation effect is large, so that the blade receiving portions 2 and 2 generate heat during use. The intermediate connection terminal 1 having stable electric characteristics over the years can be obtained.

[0007]

【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, FIG. 3 is a developed view, and FIG. 4 is an explanatory view showing a usage state. In the figure, 1 is a conductive material made of copper alloy or the like. It is an intermediate connection terminal formed by bending a flexible metal plate to form vertically symmetrical blade receiving portions 2, 2 described later.

Reference numerals 2 and 2 denote blade receiving portions. As shown in FIG. 3, the blade receiving portions 2 and 2 are formed by punching projecting tongues 3a and 3a formed on both upper and lower ends of a conductive metal plate and bending them inward. The left and right sides of the bottom plate 2a continuous with the contact pieces 3 and 3 are bent upward at right angles from the position indicated by the dotted line a so as to wrap the contact pieces 3 and 3 in which the contact portions 3b are bent and formed at the free ends thereof. The side plates 2b, 2b are formed, and the side plates 2b, 2b are bent horizontally inward from the positions shown by the dotted lines b, respectively, and the upper faces are formed into a two-layered structure including an upper plate 2c and a lower plate 2d. It is constructed by bending.

Reference numerals 4 and 4 are terminal guide portions formed by bending the protruding pieces 4a and 4a formed by punching the lower plates 2d and 2d forming the blade receiving portions 2 and 2, respectively.

Reference numeral 5 denotes a reinforcing portion formed by bulging the central portion of the bottom plate 2a inward.

To electrically connect the tabs of the bus bar and the terminals of the blade-type fuse arranged in the electric connection box (not shown) by the intermediate connection terminal 1 of the present invention configured as described above, As shown in FIG. 4, when the tab B of the busbar is inserted into one blade receiving portion 2 and the terminal of the blade-type fuse F is inserted into the other blade receiving portion 2 against the spring force of the contact piece 3, the contact piece 3 Is pressed downward and the tab B of the bus bar and the terminal of the blade-type fuse F are pressed by the repulsive spring force between the blade receiving portions 2 and the lower plate 2d formed in two layers and the contact portion 3b formed in the contact piece 3. The tab B of the bus bar and the terminal of the blade-type fuse F are electrically connected to each other by being sandwiched and held therebetween.

As described above, since the upper surfaces of the blade receiving portions 2 and 2 are formed of the two layers of the upper plate 2c and the lower plate 2d and have a large cross-sectional area and surface area, the resistance value is small, and Since the heat dissipation effect is great, there is no possibility that the blade receiving portions 2, 2 will generate heat during use, and the intermediate connection terminal 1 having stable electrical characteristics over the years can be obtained.

[0013]

[Effect of device]

 According to the present invention, as described above, since the upper surfaces of the blade receiving portions 2 and 2 are formed in two layers of the upper plate 2c and the lower plate 2d and have a large cross-sectional area and surface area, the resistance value is small and the heat radiation effect is high. Since it is large, there is no possibility that the blade receiving portions 2 and 2 will generate heat during use, and the intermediate connection terminal 1 having stable electrical characteristics over the years can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

[Fig. 2] Vertical sectional view

[Figure 3] Development view

FIG. 4 is an explanatory diagram showing a usage state

FIG. 5 is a perspective view showing a conventional intermediate connection terminal.

FIG. 6 is a development view of FIG.

[Explanation of symbols]

1 Intermediate connection terminal 2
Blade receiving part 3 Contact piece 3a
Protruding tongue

Claims (1)

[Scope of utility model registration request] 1. A contact piece in which protruding tongues (3a), (3a) formed by punching at upper and lower ends of a conductive metal plate are respectively bent inward.
(3) and (3) are formed, and the left and right sides of the contact pieces (3) and (3) are bent into a rectangular tube shape so that the upper surface has two layers, and the blade receiving portions (2) and (2) are vertically symmetrical. 2) An intermediate connection terminal characterized by being formed.