JPH0592971U - Plug terminal - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the oxide film and dust from adhering to the contact surface of the spring plate of the spring terminal, which may result in poor conduction with the plug terminal. [Structure] The contact surfaces 4 and 4 of the plug terminal main body 3 with which the spring plates 2 and 2 are provided are provided with grooves 5 and 5, and the edge portions 6 and 6 generated by the recesses of the grooves 5 and 5 are used to form the spring plate. The oxide film and dust that adhered to the surfaces of Nos. 2 and 2 and obstructed conduction were scraped off.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a plug terminal for connecting and conducting to a spring terminal formed by arranging a pair of spring plates facing each other.

[0002]

[Prior Art]

 A plug terminal is known in which a spring terminal having a pair of spring plates biased inwardly by spring elasticity is press-fitted into the upper end opening of the spring terminal so as to establish connection conduction by the spring elasticity of the spring plate. However, the contact surface of the conventional plug terminal with the spring plate was an ordinary flat surface.

[0003]

[Problems to be solved by the device]

 As described above, the contact surface of the conventional plug terminal with the spring plate is formed as a flat surface, and the flat surface is electrically contacted with the contact surface of the spring terminal so that the conduction state can be obtained. It was. However, if an oxide film is formed on the contact surface of the spring plate of the spring terminal due to aging, or if dust adheres to it and remains unused for a long time, even if the plug terminal is pressed in, the oxide film and dust will not adhere. However, there was a problem that the connection became impossible due to insulation problems. Therefore, the present invention solves the above-mentioned drawbacks of the conventional plug terminal, and even if an oxide film, dust, or the like is adhered and generated on the surface of the panel, the insulating obstacle is scraped off during press fitting. It is an object of the present invention to provide a plug terminal capable of surely creating a connection conduction state with a spring terminal.

[0004]

[Means for Solving the Problems]

 The configuration of the present invention for achieving the above-mentioned object will be described in detail. The spring plate is formed by press-fitting it into the upper end opening of a spring terminal composed of a pair of spring plates biased inward by spring elasticity. In the plug terminal designed to achieve connection continuity by the spring elasticity of the plug terminal body, some grooves are formed in the contact surface of the plug terminal body with the spring plate along the longitudinal direction of the plug terminal body. This is a plug terminal characterized in that it is configured to scrape off an oxide film and dust which are generated on the surface of the spring plate and interfere with the conduction, which are formed by the edge portion obtained by the groove.

[0005]

【Example】

 Hereinafter, a specific configuration of the plug terminal of the present invention will be described in detail with reference to an illustrated embodiment. FIG. 1 is an enlarged front view of an essential part showing an embodiment of the plug terminal of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. It is a use condition side view of a terminal.

In the figure, reference numeral 1 denotes a spring terminal in which a pair of spring plates 2 and 2 are opposed to each other at a predetermined interval, and the spring plates 2 and 2 are biased inward by the spring elasticity of the spring plates 2 and 2. It is in a closed state. The upper ends of the spring plates 2 and 2 forming the spring terminal 1 are designed to be slightly expanded outward so as to serve as a guide when the tip end of the plug terminal body 3 to be described later is press-fitted and inserted. Since the spring terminal 1 itself having such a pair of spring plates 2 and 2 arranged to face each other is conventionally known, its overall structure is omitted.

As shown in FIG. 3, the plug terminal main body 3 press-fitted and inserted into the upper end opening of the spring terminal 1 has a wedge shape so that the tip end thereof can be easily inserted, and at the same time, the spring plate 2, As shown in FIGS. 1 and 2, a plurality of grooves 5, 5 are provided in the contact surfaces 4, 4 with the plug 2 along the longitudinal direction of the plug terminal main body 3. By forming the grooves 5, 5 on the contact surfaces 4, 4 of the plug terminal body 3 with the spring plates 2, 2, the boundaries between the grooves 5, 5 and the contact surfaces 4, 4 of the plug terminal body 3 are formed. A plurality of edge portions 6, 6, 6 ... In the illustrated embodiment, the contact surfaces 4 and 4 of the plug terminal main body 3 are provided with three independent groove grooves 5 and 5, respectively. However, even if the number is increased to three or more, for example, six. Needless to say, although not shown in the drawing, a continuous saw-tooth groove may be used instead of an independent groove. Further, the grooves 5, 5 may be recessed so as to become gradually deeper toward the tip of the plug terminal body 3. In either case, the contact surfaces 4 and 4 of the plug terminal body 3 are formed with the elongated grooves 5 and 5 along the longitudinal direction of the plug terminal body 3 so that the contact surfaces 4 and 4 are elongated. Edge portions 6 and 6 are formed.

As described above, a plurality of edge portions 6, 6, ... Are formed on the contact surfaces 4, 4 of the plug terminal main body 3 with the spring plates 2, 2 so that the spring terminals 1 When the spring plates 2 1, 2 are press-fitted and inserted as shown in FIG. 3, the edge portions 6, 6, ... Abut on the inner peripheral surfaces of the spring plates 2, 2, even if they are on the surfaces of the spring plates 2, 2. Even if an oxide film or dust is attached, these obstacles are scraped off by the edge portions 6, 6, ..., And the connection between the spring terminal 1 and the plug terminal body 3 is surely achieved.

[0009]

[Effect of the device]

 Therefore, according to the present invention, even if an oxide film is formed or dust adheres to the contact surface of the spring plate of the spring terminal due to aging, the obstacle is scraped off when the plug terminal is press-fitted. Therefore, it is possible to surely establish a connection conduction state with the spring terminal, and it is possible to solve the problem that the conventional connection failure causes the reliability to be lowered.

[Brief description of drawings]

FIG. 1 is an enlarged front view of an essential part showing an embodiment of a plug terminal of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a side view of the plug terminal of the present invention in use showing a connection conduction state with the spring terminal.

[Explanation of symbols]

 1: Spring terminal 2: Spring plate 3: Plug terminal body 4: Contact surface 5: Groove 6: Edge part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Kazuhiko Arai 660 Tsuruma, Machida City, Tokyo Terada Electric Works Co., Ltd. Machida Plant

Claims (1)

[Scope of utility model registration request] 1. A plug which is press-fitted into an upper end opening portion of a spring terminal composed of a pair of spring plates biased inwardly by spring elasticity to achieve connection conduction by spring elasticity of the spring plate. In the terminal, some grooves are formed on the contact surface of the plug terminal body with the spring plate along the longitudinal direction of the plug terminal body, and the edge part obtained by the groove adheres to the surface of the spring plate. A plug terminal characterized in that it is configured to scrape off an oxide film and dust that hinder the electrical continuity.