JP2001006787A - Electrode pin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance safety/reliability and also reduce product cost. SOLUTION: By integrally forming a pin body 2 to be freely attachably/ detachably connected with a power source plug, a terminal 3 to be connected with an electrical equipment and a supporting part 4 to be provided between the pin body 2 and the terminal 3 by working of a conductive plate (a brass plate, for instance), an electrode pin 1 is constituted without interposing contact resistance between the pin body 2 and the terminal 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode pin used for, for example, an electric pot or a plug holder of an electric rice cooker.

[0002]

2. Description of the Related Art In electric pots, electric rice cookers, and the like,
Generally, in order to avoid the danger that the power supply cord will be pulled down and the device body will fall over, a magnet is provided on one or both of the power cord side plug and the device body side plug receptacle to reduce the attractive force of the magnet. A structure is employed in which a connection state between the device main body and the power cord is maintained by using the power cord so that the power cord is detached from the device main body when a tensile force is applied.

[0003] As a plug receiver used in such an electric device, for example, as shown in FIG.
01 is composed of two members, an outer pin electrode member 111 and an inner L-shaped terminal 112. The pin electrode member 111 is inserted from the outside into a hole 100a provided in the receiving body (resin molded product) 100, and the pin There is a structure in which the electrode member 111 and the L-shaped terminal 112 are caulked.

In the structure shown in FIG. 12, a contact material 1 such as silver is attached to the tip of a pin electrode member (pin body) 111.
17 is fixed, and is contacted with the contact provided on the plug of the power cord via the contact material 117. In addition, the L-shaped terminal 112 is connected to a device body such as an electric pot or an electric rice cooker.

[0005]

According to the structure shown in FIG. 12, the pin electrode member 111 and the L-shaped terminal 1
Since a caulking portion (contact portion) J is interposed between the caulking portion 12 and Joule heat, Joule heat is generated due to the contact resistance at the caulking portion J,
The effect of the heat becomes a problem. In addition, when the caulked portion J becomes loose due to long-term use or the like, there is a possibility that poor conductivity may occur. Further, since the pin electrode member 111 and the L-shaped terminal 112 are separately manufactured, the electrode pin 101
There is also a problem that the manufacturing cost is high.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an inexpensive electrode pin having high safety and reliability.

[0007]

According to the present invention, there is provided an electrode pin comprising a pin body connected to a power plug, a terminal connected to an electric device, and a support provided between the pin body and the terminal. The pin body, the support portion, and the terminal are characterized by being integrally formed by processing a conductive plate material.More specifically, at the pin body side end portion or the terminal side end portion of the support portion, It is characterized by the provision of a caulking projection.

According to the electrode pin of the present invention, since the pin body and the terminal are integrally formed by processing the conductive plate material, safety and reliability are high without contact resistance. Furthermore, since it is a processed product of a plate material (for example, a pressed product),
It can be used for mass production and the material cost is low.

In the electrode pin of the present invention, the pin main body includes:
The sheet material may be formed into a cylindrical shape by bending (forming), or the sheet material may be formed into a cylindrical shape by deep drawing.

In the case where the pin body is formed by deep drawing, if the pin body, the support portion or the terminal is provided with a locking claw for fixing the electrode pin to the resin body, the electrode pin can be formed on the resin body. The electrode pins can be attached to the resin body without performing caulking work or the like simply by inserting them into the holes (see FIGS. 6 to 8).

Here, the conductive plate material used as the material of the electrode pin of the present invention has a plate thickness of, for example, 0.4 mm and 0.5 m.
A brass plate, a copper plate, an aluminum plate, an iron plate, or the like of about m or 0.8 mm is preferable.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an embodiment of an electrode pin according to the present invention. The electrode pin 1 shown in FIG. 1 is a product obtained by processing a brass plate (for example, a plate thickness: 0.4 mm), and is used for a pin main body 2 detachably connected to a power plug, and an apparatus main body such as an electric pot or an electric rice cooker. Terminal to be connected (Faston terminal) 3,
And a flat supporting portion 4 connecting the pin body 2 and the terminal 3
Are integrally formed.

The pin body 2 is formed into a cylindrical shape, and a contact material 7 is fixed to the tip of the forming. The contact material 7 is, for example, a part formed by processing silver into a circular stepped shape, and includes a large-diameter portion 7a substantially equal to the outer diameter of the pin body 2 and a small-diameter portion 7b equal to the inner diameter of the pin body 2. 7b is inserted into the pin body 2 and soldered or soldered to the pin body 2 or inserted into the pin body 2 and the tip end peripheral wall of the pin body 2 is swaged inward to form 2 is fixed to the tip.

An outwardly protruding locking portion 6 is provided between the terminal 3 and the support portion 4, and the distal end surface 6 a of the locking portion 6 is brought into contact with the resin body 10, whereby an electrode pin is formed. 2 can be positioned with respect to the resin body 10 (FIG. 2).
(A)).

The length L of the support portion 4 is processed to a size corresponding to the thickness of the resin body 10 to which the electrode pins 1 are attached (see FIG. 2A). A crimping projection 5 is provided at an end of the support portion 4 on the pin body 2 side at a position facing each other with the pin body 2 interposed therebetween. The caulking projection 5 is formed into a right-angled triangle and can be bent outward (see FIG. 2B).

The electrode pin 1 having the above-described structure is similar to that shown in FIG.
As shown in (A) and (B), the support portion 4 is inserted into a hole 10 a provided in a resin body (for example, a plug receiver main body) 10, and a distal end surface 6 a of the locking portion 6 is brought into contact with a side surface of the resin body 10. In this state, the crimping projections 5 are bent outward and crimped to the resin body 10 to secure the resin body 10.
Can be attached to

FIG. 3 is a diagram showing a modification of the embodiment of the present invention. The electrode pin 21 of FIG. 3A is characterized in that a terminal 23 having a female screw hole (for example, M4) 23a is integrally formed instead of the faston terminal, and the electrode pin of FIG. 31 is characterized in that the male terminal 33 is formed integrally.

FIG. 4 is a perspective view of another embodiment of the electrode pin of the present invention. The electrode pin 11 shown in FIG. 4 is a product obtained by processing a brass plate in the same manner as described above, and the pin body 12 is formed into a cylindrical shape by deep drawing of a plate material, and the pin body 12 is provided with a pair of insertion pieces. A supporting portion 14 having a pair 14a and a pair of terminals (faston terminals) 13 are integrally formed.

The tip of the pin body 12 has a silver contact material 1
7 is fixed by brazing, soldering, spot welding or the like. The insertion piece 14a of the support portion 14 is provided with a right-angled triangular caulking projection 15 at an end on the terminal 13 side.

The electrode pin 11 of this example is similar to that of FIG.
As shown in (A) and (B), the insertion piece 14 a of the support portion 14 is inserted into the hole 10 b provided in the resin body 10, and the flat plate portion 14 b of the support portion 14 is brought into contact with the side surface of the resin body 10. Then, the crimping projections 15 are bent outward and fixed to the resin body 10 by caulking.
Can be attached to

In the case where the electrode pins are formed as shown in FIG. 4, various methods for attaching the electrode pins to the resin body 10 are possible in addition to the structure shown in FIG. A specific example will be described below with reference to FIGS.

First, in the example shown in FIGS. 6 (A) and 6 (B), the center of the insertion piece 14a of the support portion 14 and the terminal 13 is engaged by a notch / start-up process (cut-and-raise process). A stop claw 18 is provided. The insertion claw 14 a of the support portion 14 is inserted into the hole 10 b of the resin body 10, and the locking claw 18 is held in a state where the flat plate portion 14 b of the support portion 14 is in contact with the side surface of the resin body 10.
Are hooked on the side surfaces of the resin body 10 so that the electrode pins 51 are fixed to the resin body 10.

In the example shown in FIG. 7, the mounting of the electrode pins 61 to the resin body 10 can be performed in the opposite direction (from the pin body 12 side) to the previous example. Is provided with a pair of locking claws 19, the pin body 12 is inserted into a circular hole 10 c provided in the resin body 10, and the flat plate portion 14 b of the support portion 14 is brought into contact with the side surface of the resin body 10. The locking claws 19 are hooked on the side surfaces of the resin body 10 so that the electrode pins 61 are fixed to the resin body 10.

The examples shown in FIGS. 8A and 8B are also such that the electrode pins 71 can be mounted from the pin body side. In the example shown in FIG. 8, a locking claw 20 is provided at a center position between the insertion piece 14a of the support portion 14 and the terminal 13. Further, FIG.
As shown in (A) and (B), a stepped hole 10d composed of a small-diameter hole (circular) D1 into which the pin body 12 fits and a large-diameter hole (rectangular) D2 into which the support portion 14 fits. Further, gate-shaped locking members 30 are provided at positions facing each other with the large-diameter hole D2 interposed therebetween. In addition, the concave portion 30 a of each locking member 30 is processed into a shape and a size into which the locking claw 20 of the electrode pin 71 enters.

In the example shown in FIG. 8, the pin body 12 is inserted into the small-diameter hole D1 of the stepped hole 10d of the resin body 10, and then the support portion 14 is inserted into the large-diameter hole D2, and the flat plate portion 14 is inserted.
In a state in which the locking piece 20 is inserted until the b hits the step S of the hole, the locking piece 20 fits into the concave portion 30a of the locking member 30, and the engagement between the locking piece 20 and the locking member 30 causes the electrode pin to be inserted. 7
1 is fixed to the resin body 10.

Here, when the pin main body is formed by deep drawing as in the case of the electrode pins shown in FIGS.
As shown in (A) and (B), a through hole 12a is machined at the center of the tip of the pin body 12, and a rod-shaped projection 17a is integrally formed at the center of the contact material 17, so that the pin body 12 is formed.
In the state where the projection 17a of the contact material 17 is inserted into the through hole 12a, the tip of the projection 17a is crushed, so that the contact material 17 can be caulked and fixed to the pin main body 12. In this case, the contact material 17 can be positioned only by inserting the projection 17a into the through hole 12a of the pin body 12, so that the positioning of the contact material 17 with respect to the pin body 12 becomes unnecessary.

When the pin body is formed by deep drawing, the shape of the pin body is straight (straight pipe).
Examples include a shape, a tapered shape having a slight inclination to the outer peripheral surface, or a shape combining a straight shape and a tapered shape.

In the electrode pins having the structure shown in FIGS. 4 to 8, the terminal (faston terminal) 13 is replaced with a terminal (faston terminal) 13.
A terminal having another structure such as a terminal with a screw hole or a male terminal with a boss as shown in FIG. 3A or 3B may be provided.

FIG. 11 is a perspective view showing a modification of the electrode pin according to another embodiment of the present invention. Electrode pin 4 shown in FIG.
1 is a cylindrical pin body 4 formed by deep drawing of a plate material.
2, the support portion 44 and the locking portion 46 are also formed by drawing, and the terminal 43 is formed integrally with the locking portion 46.

Here, as the material of the electrode pin of the present invention, other than the brass plate, another conductive plate material such as a copper plate, an aluminum plate or an iron plate may be used.

The electrode pin of the present invention can be applied not only to a plug holder for an electric pot or an electric rice cooker, but also to various electric devices for making pin contact.

[0033]

As described above, the electrode pin of the present invention comprises a pin body connected to a power plug, a terminal connected to electric equipment, and a support provided between the pin body and the terminal. Is a product integrally formed by processing a conductive plate material, so that safety and reliability are high without contact resistance. In addition, mass production can be supported and material costs can be reduced, so that a significant reduction in product cost can be achieved.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram of how to attach an embodiment of an electrode pin of the present invention.

FIG. 3 is an explanatory view of a modification of the embodiment of the electrode pin of the present invention.

FIG. 4 is a perspective view of another embodiment of the electrode pin of the present invention.

FIG. 5 is an explanatory diagram of how to attach another embodiment of the electrode pin of the present invention.

FIG. 6 is an explanatory view of a modification of another embodiment of the electrode pin of the present invention.

FIG. 7 is an explanatory view of a modification of the other embodiment.

FIG. 8 is an explanatory view of a modification of the other embodiment.

FIG. 9 is a view showing a modification of a mounting hole provided in a resin body.

FIG. 10 is an explanatory view of a modification of a contact material provided in another embodiment of the electrode pin of the present invention.

FIG. 11 is a perspective view of a modification of the electrode pin according to another embodiment of the present invention.

FIG. 12 is a sectional view showing an example of a plug receiver.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1,11 Electrode pin 2,12 Pin body 3,13 Terminal 4,14 Supporting part 5,15 Protrusion for caulking 6 Locking part 7,17 Contact material 10 Resin body

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Shogetsu 2F, 1-7-7 Higashi Nara, Ibaraki City, Osaka Prefecture F-term (reference) 4B055 AA03 AA12 AA34 BA13 BA14 BA28 CA63 CB03 CC13 CC14 5E086 CC17 CC31 LL04 LL14 LL20 5E087 EE03 EE07 FF19 GG08 GG16 HH05 KK01 MM08 PP09 QQ03 RR29 RR47 RR49

Claims (5)

[Claims] 1. An electrode pin comprising a pin body connected to a power plug, a terminal connected to an electric device, and a support provided between the pin body and the terminal. An electrode pin, wherein the support portion and the terminal are integrally formed by processing a conductive plate material. 2. The electrode pin according to claim 1, wherein the supporting portion is provided with a caulking projection at an end of the pin body or an end of the terminal. 3. The electrode pin according to claim 1, wherein the pin body is formed into a cylindrical shape by bending. 4. The electrode pin according to claim 1, wherein the pin body is formed into a cylindrical shape by deep drawing. 5. The electrode pin according to claim 4, wherein a locking claw for fixing the electrode pin is provided on the pin body, the support portion or the terminal.