JPH089003A - Charging terminal structure suitable for cordless telephone set - Google Patents

Abstract

PURPOSE:To provide the charging terminal structure easily and inexpensively subject to maintenance without use of a special tool. CONSTITUTION:A recessed part 2 is provided to a case wall 1 and receiving steps 4, 4 are provided to an inner side face of the recessed part 2 inward and a conductive spring 5 is accommodated in the recessed part 2 to be connected to an internal lead wire 6 and a channel shaped metal plate made terminal member 9 having a contact 7 and fitting pieces 8, 8 at its both ends is separately provided and a latch pieces 10, 10 are formed corresponding to the receiving steps 4, 4 are formed to the fitting pieces 8, 8 and the terminal member 9 is in press contact with the conductive spring 5 at its inner face and the latch pieces 10, 10 are engaged with the receiving steps 4, 4 while being fitted to the recessed part 2 so as to expose the contact 7 and tool insert sections 11, 11 are provided to a ridge of an opening closer to the receiving steps 4, 4 of the recessed part 2 thereby allowing the terminal member 9 to be easily removed externally by using a usual tool and then the conductive spring 5 is set to the exposed state and the check, repair and replacement of components of the charging terminal section are attained without opening the case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging terminal structure suitable for a cordless telephone, and more particularly to a charging terminal structure capable of easily attaching and detaching terminals.

[0002]

2. Description of the Related Art As a conventional charging terminal portion for a cordless telephone, for example, as shown in FIG. 6, a wall body of a case C in a charger B which also serves as a mounting table for a slave unit A of the cordless telephone. A holding arm D made of an elastic metal plate is attached in a cantilevered state by a screw E, a movable contact F is provided near the tip of the holding arm D, and the moving contact F is projected outward from the wall surface of the case C. With respect to the slave unit A, the stationary contact H having the hooks G, G formed on the main body of the substantially U-shaped metal plate near both ends is hooked on the wall of the case I of the slave A by the hook G. , G so that they can be fixed by latching.
In many cases, the fixed contact H of the slave A is pressed against the movable contact F that is elastically held when the slave A is placed on the movable contact F.

[0003]

When the telephone is used under severe operating conditions or environmental conditions, contact failure or continuity failure may occur due to deformation of components, corrosion, rattling of the mounting portion, etc., and charging may be hindered. If a problem occurs during charging in this way, in the above conventional technology,
It is necessary to open the case when inspecting the charging terminal section and replacing parts. In cordless telephones, special screws are used as mounting screws due to legal regulations. Not only are there disadvantages and inconveniences that require special tools for the screws used,
There are many parts for disassembling and assembling the case, and for confirming the operation after the assembly, and the work time and the cost for that increase significantly.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a charging terminal structure in which the terminal can be attached and detached without requiring a special tool and maintenance can be performed easily and at low cost.

[0005]

In order to achieve the above object, the present invention provides a recess in a wall portion of a plastic case, an inward receiving step is provided on an inner side surface of an opposite side wall of the recess, and the recess is provided in the recess. Is for accommodating a conductive spring so as to be connected to an internal lead wire, and separately provided with a U-shaped metal plate terminal member having a contact portion and mounting pieces at both ends thereof, and each mounting piece in the recess A hook claw piece corresponding to the receiving step is formed, and such a terminal member is pressed against the conductive spring on its inner surface, and the hook claw piece is received in the recess while the contact portion is exposed so as to be exposed. It is characterized in that a tool insertion portion is provided at an opening edge portion of the concave portion close to the receiving step.

[0006]

The hook member of the terminal member engages with the receiving step of the recess by fitting the terminal member into the recess containing the conductive spring so that the contact portion is exposed while the terminal member is pressed against the conductive spring on its inner surface. The terminal member is stably attached to the case, the exposed contact portion is suitable for pressure contact with the other contact portion, and the terminal member and the conductive spring are provided at the opening edge of the recess for inspection and replacement. By inserting a thin rod-shaped tool such as a screwdriver from the tool insertion part and pushing the mounting piece of the terminal member inward against its elasticity, the hook claw piece disengages from the receiving step and the engaged state is released. Therefore, the terminal member can be removed without opening the case.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings.

First, referring to the embodiments shown in FIGS. 1 to 3, a rectangular recess 2 is provided in a wall portion 1 of a plastic case, and inwardly facing receiving steps 4 and 4 are provided on inner surfaces of opposing side walls 3 and 3 of the recess 2. In addition to providing the conductive spring 5 in the concave portion 2, the base portion of the concave portion 2 is connected to the lead wire 6 inside the case, and a relatively thin metal plate is bent in a U shape to form a contact portion 7. A terminal member 9 having mounting pieces 8 and 8 at both ends thereof is provided, and outwardly projecting to the side so as to correspond to the receiving step 4 of the recess 2 on the outer surface of each mounting piece 8 and 8. The hook member 10 is formed, and the terminal member 9 is press-fitted to the tip of the conductive spring 5 on the inner surface of the contact portion 7 and is fitted into the recess 2 so that the contact portion 7 is exposed to the wall portion 1. As it is, the hook claw pieces 10, 10 are engaged with the receiving steps 4, 4. Furthermore the opening edge close to the 受段 4,4 in recess 2 notched diagonally to form a tool insertion portion 11, 11 gradually expanded state outward.

A bent portion 12 is formed diagonally inward at the tip of each of the mounting pieces 8 of the terminal member 9 so that the terminal member 9 can be smoothly inserted into the recess 2 and the contact portion. 7
The stopper pieces 13 and 13 are formed in a state in which the end edge of the contact portion 7 is extended by cutting and raising a portion near the center of the bent portion between the mounting piece 8 and the mounting piece 8. When pressing the contacts, the terminal member 9 is prevented from being pressed inward against the recess 2 more than necessary.

When mounting the terminal member 9 in the recess 2, the terminal member 9 is guided to the bent portions 12, 12 with the mounting pieces 8, 8 corresponding to the receiving steps 4, 4. 1 and 2, the back surface of the contact portion 7 is pressed against the conductive spring 5 while the surface of the contact portion 7 is exposed to the wall 1 as shown in FIGS. 10, 10
Engage with the receiving steps 4 and 4, so that the elastic force of the conductive spring 5 causes the terminal member 9 to move the hooking claw pieces 10 and 10 into the receiving steps 4 and 4.
It should be supported under the condition that it can retreat moderately while being in contact with, and adapted to the pressure contact of the contact of the other party.

When the terminal member 9 is to be removed, a thin rod-shaped tool t such as a screwdriver is inserted from the tool insertion portion 11 in the recess 2 as shown in FIG. Then, by pushing inward, the hooking claw piece 10 can be disengaged from the receiving step 4 and the engaged state can be released. By applying such an operation to both mounting pieces 8, the elastic spring 5 of the conductive spring 5 is elastic. It can be easily removed by pushing outward due to the force.

If the elastic force of the conductive spring 5 is reduced due to deformation or corrosion of the conductive spring 5, the tool t is shown in FIG. 4 while the mounting piece 8 is being pressed by the tool t. You just have to lie down in the direction of the arrow.

As shown in FIG. 5, a bulge portion 14 is formed by pressing or the like at the center of the surface of the contact portion 7 of the terminal member 9 so that the terminal of the base unit or the charger of the cordless telephone can be formed. When the present invention is applied to a child machine, it is appropriate to limit or limit the stroke of the terminal member 9. In that case, for example, the contact portion is formed on the inner surface of the side wall of the recess 2. It is preferable to take measures such as providing a rib-shaped restricting portion that contacts the back surface of 7.

[0014]

As described above, according to the present invention, the wall portion 1 of the case is provided with the concave portion 2 and the inward receiving steps 4 and 4 are provided on the inner side surface of the concave portion 2, and the concave portion 2 is electrically conductive. Spring 5
For connecting to the lead wire 6 inside, and mounting pieces 8, 8 having separate hooking pieces 10 are provided at both ends of the contact part 7 on the inner surface of a U-shaped terminal member 9 made of a metal plate. While being pressed against the conductive spring 5, the hooks 10 and 10 are engaged with the receiving steps 4 and 4 while the surface of the contact portion 7 is capped in the recess 2 so as to be exposed. Since the tool insertion portions 11 and 11 are provided at the opening edge portions near the steps 4 and 4, not only the terminal member can be easily attached and detached from the outside by using a normal tool, but also the conductive spring 5 is provided. The whole can be exposed, so that there is an effect that maintenance such as inspection, repair and replacement of parts of the charging terminal can be performed without opening the case. Significantly reduced work time and cost Rukoto but they can.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing a charging terminal portion structure of the present invention.

2 is a partially cutaway plan view of the charging terminal structure of FIG. 1. FIG.

FIG. 3 is a perspective view of a terminal member.

FIG. 4 is a vertical cross-sectional side view showing a state in which a terminal member is removed.

FIG. 5 is a perspective view showing a terminal member according to another embodiment.

FIG. 6 is a vertical cross-sectional side view illustrating a conventional charging terminal structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 wall part 2 recessed part 3 side wall 4 receiving step 5 conductive spring 6 lead wire 7 contact part 8 mounting piece 9 terminal member 10 hooking piece 11 tool insertion part

Claims (1)

[Claims] 1. A recess (2) is formed in a wall portion (1) of a plastic case, and an inwardly facing receiving step (4) is formed on an inner surface of opposing side walls (3) and (3) in the recess (2).
In addition to providing (4), a conductive spring (5) is housed in the recess (2) so as to be connected to an inner lead wire (6), and a contact piece (7) and a mounting piece ( 8), (8)
There is provided a U-shaped terminal member (9) made of a metal plate, and on the outer surface of each mounting piece (8), (8), to the side so as to correspond to the receiving step (4). A projecting outward hooking piece (10) is formed, and such a terminal member (9) is pressed against the conductive spring (5) on its inner surface and the contact portion (7) is exposed so that the concave portion (2) is exposed. The hook claw pieces (10), (10) are engaged with the receiving steps (4), (4) while still fitted on the upper side, and further in the opening edge portion of the recess (2) close to the receiving step (4). Is a charging terminal structure suitable for a cordless telephone, which is provided with tool insertion parts (11) and (11).