JP3200360U - Alligator clip - Google Patents

Abstract

An alligator clip coated with a resin without using a male-female mold is provided. SOLUTION: A pair of clip metal fittings 11 and 12 which are freely opened and closed with a rivet shaft 22 as a center and are urged by a spring so as to close the tip part, and dip molding from the tip part to the center part of both clip metal parts Are formed integrally with each other, and only the side wall portions around the rivet holes 11e and 12e of both clip metal fittings can be lifted when the rivet shaft is attached, and are attached to and detached from the holding parts 11f and 12f of both clip metal fittings. And a free cylindrical insulating cover 15. [Selection] Figure 1

Description

  The present invention relates to an alligator clip.

  The alligator clip is a clip in which a pair of clip metal fittings that are urged by a spring so as to be openable and closable around a rivet shaft and closed at the tip end, and a gripping part of the clip metal fittings are covered with an insulating material. This type of alligator clip is used, for example, in a state of being crimped and connected to an exposed conductor after the covering of the end of the cable is removed. The distal end portion of the alligator clip is connected in a state where an electrode or a terminal of an electric device is sandwiched, and is used for temporary electrical connection (see, for example, Patent Document 1).

Utility Model Registration No. 3066674

  The device described in Patent Document 1 relates to an alligator clip for a booster cable. Specifically, a plurality of flange-shaped projecting pieces are provided on the inner edge of the tip of at least one main body, and a clamping portion for a terminal It is what.

However, in the device described in Patent Document 1, only the grip portion is covered with an insulator, and the main body, which is a conductor, is exposed from the tip portion to the center portion, and there is a possibility that the user's finger may come into contact with the device.
For this reason, what covers not only a holding part but a main body with hard resin (for example, high density polyethylene) is developed from the center part to the tip part.
When this type of alligator clip is manufactured, a male / female mold for hard resin is required. However, since there are many types of alligator clips and many types of molds are required, there is a problem that the cost increases accordingly.

  This invention is made | formed in view of the said subject, and it aims at provision of the alligator clip coat | covered with resin, without using a male-female metal mold | die.

  In order to achieve such an object, an alligator clip according to the present invention comprises a pair of clip metal fittings that can be opened and closed about a rivet shaft and biased by a spring so that the tip end is closed, and the two metal fittings for both clips. An insulating layer that is integrally formed by dip molding on the outer surface from the front end portion to the central portion, and can be lifted only when the rivet shaft is attached to the side wall portion around the rivet hole of the two clip metal fittings, and the two metal fittings for both clip And a cylindrical insulating cover detachably attached to the grip portion.

  According to the present invention, it is possible to provide a crocodile clip coated with a resin without using a male-female mold.

(A) is a top view which concerns on one Embodiment of this invention, (b) is an arrow directional view of the arrow P1 direction of (a), (c) is the crocodile mouth shown to (a) It is an insulating cover for the grip part of a clip. It is an arrow view of the arrow P2 direction of Fig.1 (a). (A) is the IIIa-IIIa sectional view taken on the line of Fig.1 (a), (b) is the IIIb-IIIb sectional view of Fig.1 (a), (c) is Fig.1 (a). FIG. 3 is a sectional view taken along line IIIc-IIIc. It is a figure which shows the state of the metal fittings 11 and 12 for clips before a dip molding. It is a figure which shows the state of the metal fittings 11 and 12 for clips after a dip molding. It is a diffusion exploded view of the alligator clip 10 shown in FIG. 3 is a plan view of the alligator clip 10 immediately after caulking of the rivet shaft 22. FIG. 2 is a view showing a state of the alligator clip 10 before a cable is connected. FIG. It is a figure which shows the state of the alligator clip 10 after a cable connection.

  FIG. 1A is a plan view according to an embodiment of the present invention, FIG. 1B is an arrow view in the direction of arrow P1 in FIG. 1A, and FIG. It is an insulation cover for the holding part of the alligator clip shown to Fig.1 (a). FIG. 2 is a view taken in the direction of arrow P2 in FIG. 3A is a cross-sectional view taken along line IIIa-IIIa in FIG. 1A, FIG. 3B is a cross-sectional view taken along line IIIb-IIIb in FIG. 1A, and FIG. FIG. 3 is a cross-sectional view taken along line IIIc-IIIc in FIG.

<Configuration>
An alligator clip 10 shown in FIG. 1A includes a pair of clip metal fittings 11 and 12, insulating layers 13 and 14, and an insulating cover 15.
The pair of clip fittings 11 and 12 is urged by a spring 21 (see FIG. 6) so as to be openable and closable around the rivet shaft 22 and the tip end portions 11a and 12a are closed.
Insulating layers 13 and 14 are integrally formed on the outer surface from the tip end portions 11a and 12a of the clip metal fittings 11 and 12 to the center portions 11b and 12b by dip molding.
The material of the rivet shaft 22 is the same as that of the clip metal parts 11 and 12.
For example, soft vinyl chloride is used for the insulating layers 13 and 14, but the present invention is not limited to this, and rubber, polyethylene, or silicone rubber may be used.

  Arc-shaped notches 11g and 12g are formed so as to be opposed to the tip portions 11a and 12a of the alligator clip 10 shown in FIG. This is, for example, to make it easier to grip the battery electrode.

The gripping portions 11f and 12f of the clip metal fittings 11 and 12 are formed in a U-shaped cross section as shown in FIGS. 2 and 3A and 3B in order to improve the strength. As shown in FIG. 3C, the bent portions 11d and 12d of the grip portions 11f and 12f form a crimp terminal.
Examples of the material of the clip metal parts 11 and 12 include nickel-plated steel sheet, silver-plated brass, copper-plated steel sheet, and gold-plated steel sheet.
As shown in FIG. 3A, the clip metal fitting 11 is subjected to overmolding by a press machine (not shown) to form an overhang portion 11c toward the outside. The inside of the overhanging portion 11c is a groove so that the end of the spring 21 (see FIG. 6) can slide. The spring 21 is a torsion spring. It is because it is easy to obtain and matches the shape of the alligator clip.
As shown in FIG. 3 (b), the clip metal fitting 11 is subjected to overmolding by a pressing machine (not shown) to form an overhang portion 11h. The overhanging portion 11h forms an arch in a U-shape, and a conductor exposed from a cable from which a coating (not shown) is removed is inserted into the arch. The conductor inserted into the arch is soldered.
Since the clip metal fitting 12 is processed in the same manner as the clip metal fitting 11, the description thereof is omitted.

  The insulating cover 15 shown in FIG. 1C is formed in a cylindrical shape that can be attached to and detached from the gripping portions 11f and 12f of the two metal fittings 11 and 12 for clips. The material of the insulating cover 15 may be the same material as the insulating layers 13 and 14 or a heat shrinkable tube.

<Manufacturing process>
4-9 is explanatory drawing for demonstrating the manufacturing process of the alligator clip shown to Fig.1 (a)-(c).

FIG. 4 is a view showing a state of the clip metal fittings 11 and 12 before dip molding.
As shown in FIG. 4, a pair of clip metal parts 11 and 12 are prepared, and a release agent 16 is applied to the side wall portions around the clip metal parts 11 and 12. The release agent 16 is a member for enabling the side wall portions of the insulating layers 13 and 14 near the rivet holes 11e and 12e to be lifted from the clip metal fittings 11 and 12, Material is used. When the insulating layers 13 and 14 are raised from the clip metal fittings 11 and 12, a rivet shaft 22 described later can be attached.
Immersion in the direction of arrow P3 in the molten resin (sol) 20 from the tip 11a, 12a to the center 11b, 12b, excluding the gripping part 11f, 12f of the clip metal parts 11, 12 coated with the release agent 16 To do. The molten resin 20 is housed in a molten layer, and the molten layer may be called a male mold (male mold), but a pair of male and female molds is not necessary.

FIG. 5 is a view showing a state of the clip metal parts 11 and 12 after dip molding.
The molten resin 20 is applied by pulling up the clip fittings 11 and 12 from the molten resin 20 shown in FIG. 5 in the direction of arrow P4. By heating and cooling the clip fittings 11 and 12 for a predetermined time in a heating furnace (not shown), the molten resin 20 is gelled, and the insulating layers 13 and 14 are formed integrally with the clip fittings 11 and 12.
The insulating layers 13 and 14 are formed on the inside of the clip fittings 11 and 12 at the same time as the outside, but are removed on the inside because they are unnecessary (however, a release agent is previously placed inside the clip fittings 11 and 12). It may be applied.)

6 is a diffusion exploded view of the alligator clip 10 shown in FIG. 1A, and FIG. 7 is a plan view of the alligator clip 10 just after caulking of the rivet shaft 22. FIG.
As shown in FIG. 6, only the insulating layers 13 and 14 around the rivet holes 11e and 12e of the clip fittings 11 and 12 are rolled up, and after removing the release agent 16 (see FIG. 5), the clip fittings are removed. The rivet holes 11e and 12e of the 11 and 12 are combined so that they overlap each other, the spring 21 is set between the clip fittings 11 and 12, and the rivet shaft 22 is passed through the rivet hole 11e, the spring 21, and the rivet hole 12e. . After passing through the rivet shaft 22, the portion exposed from the rivet hole 12e of the rivet shaft 22 is caulked. As a result, as shown in FIG. 7, the clip metal fittings 11 and 12 are connected to each other so as to be openable and closable around the rivet shaft 22. After the rivet shaft 22 is caulked, the rolled up insulating layers 11 and 12 are returned to their original positions to obtain an alligator clip 10 as shown in FIG.

<Cable connection>
FIG. 8 is a view showing a state of the alligator clip 10 before the cable is connected, and FIG. 9 is a view showing a state of the alligator clip after the cable is connected.
The cable 30 with the coating exposed to the bent portions 11d and 12d of the alligator clip 10 shown in FIG. 8 is crimped using a crimping tool. After the crimping, the cable connection is implemented as shown in FIG. 9 by covering the gripping portions 11f and 12f with the insulating cover 15 or contracting with the hot air after the covering. Although two cables 30 are connected, it goes without saying that one cable may be used.

<Effect>
Since the insulating layer is formed by dip molding from the front end portion of the clip metal fitting to the center portion, it is possible to provide an alligator clip coated with resin without using a male-female mold.

  In addition, although the said embodiment is a suitable specific example in this invention, and there may be various technically preferable restrictions, the technical scope of this invention does not have the description which limits this invention in particular. As long as it is not limited to these embodiments. Moreover, the component in the said embodiment can be replaced with the existing component etc. suitably, and various variations including the combination with another existing component are possible. Therefore, the description of the above-described embodiment does not limit the content of the device described in the scope of the utility model registration request.

10 Alligator clips 11, 12 Clip fittings 11a, 12a Tip portions 11b, 12b Central portions 11c, 12c, 11h, 12h Overhang portions 11d, 12d Bending portions 11e, 12e Rivet holes 11f, 12f Holding portions 11g, 12g Notches 13, 14 Insulating layer 15 Insulating cover 16 Stripping agent 21 Spring 22 Rivet shaft 30 Cable

Claims (5)

A pair of clip metal fittings that can be opened and closed about the rivet shaft and biased by a spring so that the tip is closed,
An insulating layer integrally formed by dip molding on the outer surface from the front end portion to the central portion of both the metal fittings for both clips, and only the side wall portion around the rivet holes of the metal fittings for both clips can be lifted when the rivet shaft is attached; ,
A cylindrical insulating cover detachably attached to the gripping portion of the two clip metal fittings;
Alligator clip, characterized by comprising.   The alligator clip according to claim 1, wherein arc-shaped cutouts are formed at the front ends of the clip metal fittings so as to face each other.   The alligator clip according to claim 1, wherein the resin used for the dip molding is soft vinyl chloride, rubber, polyethylene, or silicone rubber.   2. The alligator clip according to claim 1, wherein the material of the clip metal fittings is any one of a nickel-plated steel plate, a silver-plated brass, a copper-plated steel plate, or a gold-plated steel plate.   The alligator clip according to claim 1, wherein the spring is a torsion spring.

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