JPH05268307A - Charging terminal equipment and its terminal assembly - Google Patents

Abstract

PURPOSE:To ensure the universal applicability of a terminal assembly by preventing the exposure of the contact terminal of a cordless terminal equipment and the charging terminal of a charging side device over the surface and also standardizing the terminal assembly as a unit module. CONSTITUTION:A cordless terminal equipment 5 is inserted into a guide groove 54 where one of both ends of a twist coil spring terminal 61 made of a conductive material is formed into a contact terminal 62 of a free end and the terminal 62 is set in a recess 53 of the cordless terminal equipment 5. Then a terminal assembly 6 is provided to the equipment 5 together with a projected engagement part 82 which is put into a recess hole piercing through the wall part of a charging device 7 and also put into the recess 53 of the equipment 5 over the wall part of the device 7, and a terminal assembly 8 of the device 7 which is set in the recess of a charging terminal inserting part where a charging contact part is formed at the part 82.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rechargeable terminal device. Although there are various types of rechargeable terminal devices, such a rechargeable terminal device is extremely convenient and highly utilized because it has a secondary battery as a cordless terminal device and can be carried around and used at any place. However, since it is a secondary battery, it is necessary to charge it in a timely manner according to the consumption of the battery.

Therefore, a rechargeable terminal device is mainly composed of a combination of a cordless terminal device and a charging device for charging a commercial power source with a predetermined DC voltage, and is connected to this charging terminal as required. Will be charged. The connection is usually performed by simply placing the cordless terminal device on the charging supply device and by spring contact due to its weight, and the removal can be easily done by lifting the cordless terminal device.

Examples of the cordless terminal device according to the present invention include a mobile phone, a cordless phone, a pager, a portable radio device, and other portable mobile terminal devices.

[0004]

2. Description of the Related Art A rechargeable terminal device will be described below using a cordless telephone as a typical example. A cordless telephone includes a so-called master telephone and a slave that is wirelessly connected to the so-called master telephone. In the following description, the slave is referred to as a cordless telephone for convenience.

As a conventional cordless telephone, a cordless telephone 1 is charged by an internal secondary battery by a charging device 2 as shown in the side sectional view of FIG.
In the state shown in the figure, the cordless telephone 1 is placed from above so that the transmitter section 11 is on the lower side and the receiver section 12 is on the upper side so as to lean against the charging device 2.

An upper stepped recess 21 of the charging device 2 is adapted to receive the handset portion 12, and an opening 22 of the stepped portion has a spring contact 23 made of a leaf spring mounted therein rather than the opening 22. It projects into the recess 21. Although only one is shown in the figure, two are provided in parallel. Further, two fixed contacts 13 are similarly mounted in parallel on the lower surface of the handset portion 12 from the opening on the lower surface of the handset portion 12 so as to be electrically connected to the spring contacts 23.

In another conventional cordless telephone, a cordless telephone 3 is charged by an internal secondary battery by a charging device 4 as shown in the side sectional view of FIG.
In the illustrated state, the transmitter portion 31 of the cordless telephone 3 is placed below and the receiver portion 32 is placed above and simply placed in the recess 41 of the charging device 4 from above.

The recess 41 of the charging device 4 is adapted to receive the transmitter portion 31, and the spring contact 43 made of a leaf spring mounted inside the opening 42 of the bottom surface is located in the recess 41 more than the opening 42. It is protruding. Although only one is shown in the figure, two are provided in parallel. Two fixed contacts 33 are also mounted in parallel from the lower surface opening of the transmitter portion 31 on the lower surface of the transmitter portion 31 so as to be electrically connected to the spring contacts 43.

Such a state is shown in a perspective view of FIG. 9 in a state where the cordless telephone 3 is lifted from the charging device 4. In any of the above, the contact portion of the conventional contact is devised so as to obtain a good and stable contact state as a part of a curved shape or a spherical shape. Each contact and the electric circuit portion are directly connected to the printed board by soldering, or are connected by using a connecting wire. As described above, the contacts are press-fitted and fixed to the case of the cordless telephone or the charging device, screwed, or directly attached to the printed board.

Further, the spring contact is required to have a length so that an appropriate spring contact state can be obtained, and it is necessary to cause a slip at the time of contact with the fixed contact. This is
If there is dirt or foreign matter on the contact area, contact failure may occur. Remove this by friction sliding.

[0011]

According to the above-mentioned conventional cordless telephone, the cantilever spring requires a considerable length in order to stably obtain a predetermined contact pressure at the spring contact, and the spring contact is housed in a small case. Bending is required. The need for bending or spherical drawing of the contact portion to obtain a reliable contact leads to a complicated shape and an increase in cost.

Since the shape of the spring contact terminal becomes large and complicated, it is difficult to apply it to devices having different shapes in common, and it is necessary to change the shape for each. Since both the spring contact and the fixed contact are exposed on the outer surface of the device, there is a possibility that the contact part may be contaminated due to various factors or the protruding spring contact part may be deformed and damaged especially when removed. ..

An object of the present invention is to solve the above-mentioned problems of the prior art. Therefore, the contact terminals of the cordless terminal device and the charging terminal of the charging side device are not exposed on the surface, and The first purpose is to prevent various failures from occurring in the terminal, and the second purpose is to standardize the terminal assembly as a unit module so that it can be used for general purposes.

[0014]

The constituent means of the present invention for achieving the above object is a rechargeable terminal device comprising a cordless terminal device and a charging device for charging the cordless terminal device by elastic contact of contact terminals. A terminal of a cordless terminal device in which one end of a torsion coil spring terminal made of a conductive material is formed as a contact terminal at a free end, and the contact terminal is inserted and supported in a guide groove formed in a recess of the cordless terminal device. The assembly and the projecting engagement portion that is inserted into and supported by the concave hole that penetrates the wall portion of the charging device and that protrudes from the wall portion and that fits into the recess of the cordless terminal device are formed. And a terminal assembly of the charging device arranged in a recess of the charging terminal insertion portion formed in the protruding engagement portion, and the terminal assembly of the cordless terminal device is attached to the terminal assembly. The contact terminal of the torsion coil spring terminal and the protruding engagement portion are formed by the engagement of the recessed portion with built-in contact terminal of the cordless terminal device and the protruding engagement portion with built-in contact of the charging device to which the terminal assembly of the charging device is attached. It is configured so as to make elastic contact with the charging contact portion in the recess.

A pair of torsion coil spring terminals, one end of which is a contact terminal with a free end and the other end of which is a conductive material with a connection terminal,
A terminal assembly of the cordless terminal device, comprising: an insulating base body having support portions for connecting terminals of the torsion coil spring terminal on both sides and support shafts for inserting and holding the torsion coil spring portion on both sides. is there.

Also, the charging terminal is provided with a pair of charging terminals made of a conductive material, a projecting engagement portion and a penetrating insertion portion into a recessed hole in a wall portion of the charging device and a locking portion for the charging device. It is a terminal assembly of the said charging device which consists of the main body of the insulator which has the charging terminal insertion part of a recessed part.

[0017]

Since the contact portions of the terminals of both the cordless terminal device and the charging device are in the recessed portion, they are not directly soiled or damaged. The spring terminal side can be miniaturized by using a torsion coil spring terminal. Since both terminals of the charging device of the cordless terminal device are terminal assemblies, both generalization and improvement of assemblability can be achieved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The constituent means of the present invention will be described in detail below with reference to the accompanying drawings. Also in this embodiment, the cordless terminal device will be described as a cordless telephone for convenience.

FIG. 1 is a side view of a partial cross section of a first embodiment of the present invention, and FIG. 2 is a side sectional view of the main part of the cordless telephone 5 of FIG. In the figure, reference numeral 5 is a cordless telephone with a built-in secondary battery, and 7 is a charging device. The charging device 7 has either a built-in transformer rectifier or an external transformer rectifier.

The cordless telephone 5 is composed of a lower transmitter section 51 and an upper receiver section 52 of the main body, has a built-in terminal assembly 6, and has a torsion coil spring terminal 61.
The contact terminal 62 portion of is located in the recess 53 of the handset portion 52.

The charging device 7 also has a stepped recess 71 for accommodating the handset portion 52, and the terminal assembly 8 having the upward projecting engaging portion 82 is fitted into the wall of the stepped portion. Has been.

When the recess 53 is fitted and engaged with the projecting engagement portion 82, the contact portions of the two are brought into contact with each other in the recess. The terminal assembly 6 of the cordless telephone 5 will be described in more detail with reference to the perspective view of the main part of FIG.

The pair of torsion coil spring terminals 61 are symmetrical, and the inner end side thereof is a free end contact terminal 62 and the outer end side thereof is a connection terminal 63. The torsion coil spring terminal 61 is a metal wire having good electric conductivity and a spring property. Furthermore, the surface is subjected to metal plating treatment for rust prevention.

The base 65 has a substantially inverted T shape when viewed from the front,
The support portion 66 of the connection terminal 63 is formed on both sides, a pair of support shafts 67 is formed on both sides in parallel to the support portion 66, and a hole 68 for screw insertion is formed in the central portion of the support portion 66. The base 65 is an integrally molded product of an electrically insulating synthetic resin. Reference numeral 69 is a set screw.

The coil spring portion of the torsion coil spring terminal 61 is fitted to the support shaft 67 as shown in the drawing, and the connection terminal 63 portion is fitted to the support portion 66. Therefore, the contact terminal 62 at the free end is located in the open and free form.

This torsion coil spring terminal assembly 6
Is the screw hole 5 inside the handset portion 52 as shown in the figure.
5, the contact terminals 62 are fitted in the pair of guide grooves 54 formed in the case. Then, as shown in FIG. 2, the tip of the contact terminal 62 comes into contact with the inner surface of the case and the twisted coil portion is wound more than in the free state. As a result, a preload occurs. Then, the cordless telephone 5 is located in the recess 53 of the handset portion 52.

The circuit portion of the printed board 57 shown in FIG. 2 and the connecting terminal 63 are connected by a connecting wire 58 with a connector 59 at the tip. About the terminal assembly 8 of the charging device 7 of FIG. 1, the front view of the (a) figure of FIG. 4, the side view of the (b) figure which shows the BB cross section of the (a) figure, and the perspective view of FIG. Will be described in detail with reference to.

A protruding engaging portion 82 is provided on the horizontal base plate portion 81.
The left and right ends of the leg piece 83 are directed downward, the lower end portion of the leg piece is provided with an outward engaging claw 84, and the intermediate portion is provided with two charging terminal insertion holes 85. The main body 86 is an integrally molded product of an electrically insulating synthetic resin.

The charging terminal 87 is composed of a connecting terminal portion 88 at the lower end and a widened charging contact portion 89 at the upper portion, and is made of a single metal plate having good conductivity and the surface of which is subjected to metal plating treatment for rust prevention. ing. The charging terminal 87 has an insertion hole 85 of the main body 86.
Is pressed from above and positioned and locked at the shoulder 90.

As a result, as well shown in FIG. 4 (b), the charging contact portion 89 is in a state in which the charging contact portion 89 is more fully inserted than the protruding engagement portion 82, and is in a state as if it were located in the recess. Sloped surfaces 92 are formed on both sides of the recess 91 in a portion extending from the projecting engagement portion 82 to the charging contact portion 89.

Such a contact assembly 8 is shown in a perspective view in FIG. 5, and the step portion 7 in the stepped recess 71 of the charging device 7 is shown.
5 has a shoulder 76 formed therein and is inserted into a concave hole 77 penetrating the wall portion of the case. The leg piece 83 is compressed and deformed by the engaging claw 84 and is inserted along the wall of the recessed hole 77,
With the locking claw 84 engaged with the lower end surface of the wall of the recessed hole 77, the lower surface of the substrate portion 81 abuts against the surface of the shoulder 76 and is locked, and the position is determined. That is, the board portion 81 serves as a locking portion.

The connection terminal portion 88 of the charging terminal 87 is electrically connected to an internal circuit. The above state is the state shown in FIG. By making the recess 53 of the cordless telephone 5 hang on the protruding engagement portion 82 of the terminal assembly 8 of the charging device 7, the contact terminal 62 in the recess 53 of the cordless telephone 5 of the charging device 7 is provided. The upper surface of the charging contact portion 89 comes into contact with the upper surface of the charging contact portion 89, whereby the torsion coil spring portion is further rolled up, the contact pressure between the contacts is further increased, and a good connection state is obtained.

Since the contact terminal 62 makes a sliding contact with the surface of the charging contact portion 89 in the contact process,
Remove foreign matter on the surface to make a reliable connection. The inclined surface 92 of the terminal assembly 8 of the charging device 7 functions as a good guide for the contact terminal 62 of the cordless telephone 5 to the contact position of the charging contact portion 89 surface of the charging terminal 87.

FIG. 6 is a partial cross-sectional side view of the second embodiment of the present invention. In the figure, reference numeral 100 is a cordless telephone, which has a transmitter section 101 below and a receiver section 1 above.
02 and. A recess 103 is formed in the lower surface of the transmitter portion 101, the terminal assembly 6 shown in FIGS. 2 and 3 is attached inside, and the contact terminal 62 can be seen in the recess 103.

Reference numeral 110 is a charging device, in which a recess 111 is formed on the upper surface and the terminal assembly 8 shown in FIG. 4 is inserted into the bottom surface from above. The cordless telephone transmitter section 101 from above in the recess 111 of the charging device 110
When the bottom surface is inserted, the recess 103 engages with the protruding engagement portion 82 of the terminal assembly 8, and the contact terminal 62 effectively contacts the surface of the charging contact portion 89 of the charging terminal 87.

[0036]

As described above, according to the present invention, since neither the contact terminal of the cordless terminal device nor the charging contact portion of the charging device is directly exposed on the surface, the contact surface requiring good contact. It is possible to prevent stains and deformation of the product.

Further, since both of them are made into a unit module as a terminal assembly, they can be standardized and can be used universally in various devices, and their practical effects are remarkable.

[Brief description of drawings]

FIG. 1 is a side view of a partial cross section of a first embodiment of the present invention.

FIG. 2 is a side sectional view of a main part of FIG.

FIG. 3 is a perspective view of a contact assembly of a cordless telephone.

FIG. 4 is a front view (a) of a contact assembly of the charging device,
The side view of the BB cross section of (a) figure (b).

FIG. 5 is a perspective view of a contact assembly of the charging device.

FIG. 6 is a side view of a partial cross section of a second embodiment of the present invention.

FIG. 7 is a side sectional view of a conventional cordless telephone and a charging device.

FIG. 8 is a side sectional view of another conventional cordless telephone and a charging device.

9 is a perspective view of the cordless telephone of FIG. 8 in a lifted state.

[Explanation of symbols]

 5.100 cordless telephone 51,101 transmitter section 52,102 receiver section 53,103 recess 54 guide groove 55 screw hole 6 cordless telephone terminal assembly 61 torsion coil spring terminal 62 contact terminal 63 connection terminal 65 base body 66 support Part 67 Support shaft 68 Screw insertion hole 7,110 Charge supply device 71 Stepped recess 75 Step part 76 Shoulder 77 Recessed hole 8 Charger terminal assembly 81 Board part 82 Projection engagement part 83 Leg piece 84 Locking claw 85 Insertion hole 87 Charging terminal 88 Connection terminal portion 89 Charging contact portion 90 Shoulder 91 Recess 92 Inclined surface

Claims (3)

[Claims] 1. A rechargeable terminal device comprising a cordless terminal device (5) and a charging device (7) for charging the cordless terminal device (5) by elastic contact of a contact terminal (62), which is made of a conductive material. One end of the torsion coil spring terminal (61) is formed as a free end contact terminal (62), and the contact terminal (6) is formed.
2) a cordless terminal device terminal assembly (6) inserted and supported in a guide groove (54) formed in the recess (53) of the cordless terminal device (5), and a wall of the charging device (7). A charging engagement part (82) is inserted into and supported by a recessed hole (77) penetrating the part and protrudes from the wall part to fit into the recessed part (53) of the cordless terminal device (5), thereby charging the battery. A terminal assembly (8) of the charging device, wherein a contact part (89) is arranged in a recess (91) of a charging terminal insertion part (85) formed in the protruding engagement part (82); A recess (53) with a built-in contact terminal of the cordless terminal device, to which the terminal assembly (6) of the cordless terminal device is attached, and a protruding member with a built-in contact point of the charging device, to which the terminal assembly (8) of the charging device is attached. By engaging with the joint (82) Rechargeable terminal apparatus charging contacts in the recess and the projecting engagement portions contact terminal (62) (89) and is characterized by being configured so as to elastically contact the torsion coil spring pin. 2. A pair of torsion coil spring terminals (61) made of a conductive material, one end of which is a free end contact terminal (62) and the other end of which is a connection terminal (63), and a connection terminal of the torsion coil spring terminals on both sides. The cordless terminal device according to claim 1, further comprising: a support portion (66) and an insulating base body having support shafts (67) on both sides of which the torsion coil spring portions are fitted and held. Terminal assembly. 3. A pair of charging terminals (87) made of a conductive material.
And a recess (91) which is inserted through the projecting engagement part (82) and the recessed hole in the wall of the charging device and has a locking part (81) for the charging device and which accommodates the charging terminal (87). The main body (86) of an insulator having the charging terminal insertion part (85) of (4), and the terminal assembly of the charging device according to claim 1.