WO1999041818A1

WO1999041818A1 - Terminal structure for charging equipment

Info

Publication number: WO1999041818A1
Application number: PCT/JP1999/000625
Authority: WO
Inventors: Masami Yamamoto
Original assignee: Staf Corporation
Priority date: 1998-02-13
Filing date: 1999-02-12
Publication date: 1999-08-19
Also published as: AU2440399A; JP3220082B2; JPH11234912A

Abstract

A terminal structure for charging equipment in which a charging output terminal is exposed, capable of being used safely even when a line transformer is omitted. The terminal structure comprises a frame member (l) fixed to a casing (9) for the charging equipment, a movable contact member (4) which is fitted and slidingly moved in a hole (2l) provided in the frame member (l), and which contacts a charging terminal of an apparatus (8) to be charged, a plate spring (5) fixed to the frame member (l), a spring member (6) electrically connected to a conductor (4l) of the movable contact member (4) via a coiled spring (2), and a lever member (3) adapted to be turned when the apparatus to be charged is placed on the casing, as the lever member is supported on the frame member (l), by a projection (8l) of the apparatus to be charged, to operate the plate spring (5) and engage the spring member (6), the movable contact (4) which contacts the charging terminal of the apparatus (8) to be charged being shut off from a power source circuit of the charging equipment unless the apparatus (8) to be charged is placed on the casing (9), whereby a line transformer is rendered unnecessary.

Description

Description Battery charger terminal assembly Technical field

The present invention relates to a terminal structure of a charging device for charging a device to be charged, such as a cordless telephone handset, a mobile phone, a pager, and the like. In particular, a movable structure that contacts a charging terminal of the device to be charged unless the device to be charged is placed on the terminal. The contact member is configured to be cut off from the power supply circuit of the master unit, eliminating the need for a line transformer. BACKGROUND ART-A charging device for charging a device to be charged, such as a handset of a cordless telephone, a mobile phone, a pager, etc., simply places the device to be charged in a predetermined position in order to facilitate handling. It is configured to be able to charge.

By connecting the charging terminal of the device to be charged to the output terminal of the charging device, the storage battery of the device to be charged is connected to the power supply circuit of the charging device.

In such a conventional charging device, since the output terminal of the charging device is always exposed and connected to the power supply circuit, it is necessary to provide a line transformer for withstand voltage measures in the base unit.

If a line transformer is installed in the master unit, the master unit becomes heavier and costs increase.

Therefore, the present invention has been conceived to realize transformerless charging without using a line transformer. Disclosure of the invention

The terminal structure for a charging device according to the present invention includes a frame member 1 fixed to a housing 9 of the charging device, and a sliding member 1J which is fitted into a hole 21 provided in the frame member 1 and slides 1J to form a charging terminal of a device to be charged. Movable contact member 4 to be in contact, plate panel 5 fixed to frame member 1, and electrically connected to conductor 41 of movable contact member 4 via coil spring 2 It is composed of a spring member 6 and a lever member 3 that rotates while being supported by the frame member 1 when the device to be charged is placed, and that operates the plate panel 5 to come into contact with the spring member 6. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a cross-sectional view showing an embodiment of the terminal assembly for a charging device of the present invention, FIG. 2 is a diagram showing a frame member used in the device shown in FIG. 1,

FIG. 3 is a view showing a lever member used in the apparatus shown in FIG. 1,

FIG. 4 is a sectional view showing a movable contact member used in the device shown in FIG. 1,

FIG. 5 is a view showing a panel panel used in the apparatus shown in FIG. 1,

FIG. 6 is a view showing a spring member used in the device shown in FIG. 1,

FIG. 7 is an enlarged sectional view showing a state where the terminal assembly for a charging device is assembled. BEST MODE FOR CARRYING OUT THE INVENTION

The terminal structure for a charging device of the present invention is attached to a base unit or the like of a cordless telephone, and includes a frame member 1 fixed to a base unit housing 9 as shown in a sectional view of FIG. The movable contact member 4 fitted in the hole 21 provided in the frame member 1, the plate panel 5 fixed to the frame member 1, and the movable contact member 4 are electrically connected via the coil spring 2 It is constituted by a spring member 6 and a lever member 3 which is supported by the frame member 1 and rotates to operate a spring 5.

As shown in the front view (a) and the side view (b) of FIG. 2, the frame member 1 supports the substrate 11 fixed to the base unit housing 9 and the rotating shaft 35 of the lever member 3. In addition, it comprises a bearing portion 12 protruding from an intermediate portion of the substrate 11, a support member 13 rising from both side surfaces of the substrate 11, and a contact holding member 20 supported between the support plates 13. On the inner side of the support plate 13, two ridges 14, 15 are formed to limit the rotation range of the lever member 3.

Around the both ends of the substrate 11 of the frame member 1, round holes 16 for screwing to the housing 9 are drilled, and six holes for fixing three panel panels 5 are provided at an intermediate portion of the substrate 11. The contact holding part 20 has three holes for supporting the three movable contact members 4 in a sliding position, and two holes for receiving the third foot 33 of the lever member 3. A depression 23 is formed. The three holes 21 through which the movable contact member 4 slides are round holes formed on the front side, and are penetrated holes formed with a square hole on the back side in communication with the round holes. There are three long holes 24a, 24b.24c for fixing the spring member 6 in the hole.

As shown in the front view (a), the plan view (b) and the side view (c) of FIG. 3, the lever member 3 has two levers having three legs 31, 32, and 33 in a letter shape. The first foot 31 is connected to each other by a spring pressing rod 34, the second foot 32 is formed with a projection serving as a rotation axis 35, and the third foot 31 The part 33 is a pressed piece that is pushed by the device to be charged and rotates the lever member 3.

The movable contact member 4 is a shell-shaped member made of synthetic resin, and is embedded at the time of molding so that both ends of the elongated conductor 41 are exposed, as shown in the sectional view of FIG. A hole 43 from which a conductor 41 protrudes is formed, and a square flange 42 is formed around the base.

As shown in the plan view (a) and the front view (b) of FIG. 5, the panel panel 5 is formed by punching and bending an elastic metal plate, and includes a tongue piece 53 connected to a lead wire and a spring. The contact portion 51 includes a contact portion 51 that contacts the curved contact portion 63 of the member 6 and a foot portion 54 that fits into the long hole 17 of the frame member 1. The contact portion 51 has a long hole for imparting flexibility. 52 is punched out, and a cut-and-raised piece 55 is formed on the foot portion 54 so as to be opened outward so as not to come out when fitted into the long hole 17 of the frame member 1.

As shown in the plan view (a), front view (b) and side view (c) of FIG. 6, the spring member 6 is formed by stamping and bending an elastic metal plate.受 A receiving plate 61 with a projection 62 for receiving the spring 2, a curved contact part 63 that contacts the spring 5, and a long hole 24 a, 24 b formed around the hole 21 of the frame member 1 , 24c are fitted with three feet 65a, 65b, 65c, and a long hole 64 is punched in the contact portion 63 to provide flexibility. The a, 65b, 65c is formed with a cut-out piece 66 that opens outward so as not to come out when fitted into each of the elongated holes 24a, 24b, 24c of the frame member 1. Next, a procedure for assembling the components to form a terminal assembly for a charging device will be described.

(1) While bending the second foot portion 32 of the lever member 3 inward, fit the projection serving as the rotation shaft 35 into the hole of the bearing portion 12 of the frame member 1. At this time, the spring pressing rod 34 is fitted between the two ridges 14 and 15 formed inside the support plate 13 of the frame member 1 so that both ends of the spring pressing rod 34 are positioned.

(2) When the movable contact member 4 was inserted through the square hole of the frame member 1, the tip of the movable contact member 4 protruded from the round hole of the frame member 1 and was formed at the rear end of the movable contact member 4. The square flange 42 can slide inside the square hole to the back side of the round hole, and the movable contact member 4 becomes slidable in the axial direction.

(3) The three feet 65 of the spring member 6 are fitted into the three long holes 24 of the frame member 1 while the coil springs 2 are fitted in the holes 43 at the rear end of the movable contact member 4, and the spring members 6 To frame member 1.

(4) Insert the two feet 54 of the panel panel 5 into the long holes 17 of the frame member 1 and fix the spring 5 to the frame member 1 to assemble as shown in the side view of FIG. be able to.

In this way, when the panel 5 and the spring member 6 are fixed to the frame member 1, the legs 54 of the panel 5 and the legs 65a, 65b, 65c of the spring 6 open outward. Since the cut and raised pieces 55 and 66 are formed, the feet 54 of the spring 5 and the feet 65 a, 65 b and 65 c of the spring member 6 are connected to the respective elongated holes 17, 24 a and 24 of the frame member 1. b. It can be easily fixed by fitting into 24c and 17 respectively.

As shown in FIG. 7, since the spring pressing rod 34 of the lever member 3 is pushed up by the 5 spring 5, the lever member 3 is turned around the turning shaft 35 as shown by the thick line, and The pressed piece 33 of one member 3 extends to the surface of the contact holding portion 20 of the frame member 1. At this time, since the plate panel 5 is separated from the contact portion 63 of the spring member 6 and is in a non-contact state, the conductor 41 of the movable contact member 4 is separated from the tongue piece 53 for connecting the lead wire of the plate panel 5. It is electrically open.

The charging device terminal structure thus configured is attached to the base case 9 as shown in FIG. 1, and the lead wire connecting tongue 53 of the panel panel 5 is connected to the power supply circuit.

When the cordless telephone handset 8 is placed on the base case 9, the charging The electrical contact and the conductor 41 of the movable contact member 4 come into contact with each other, and the pressed piece 36 of the lever member 3 is pushed by the projection 81 formed on the bottom of the cordless telephone, thereby rotating the lever member 3. For this purpose, the spring pressing bar 34 of the lever member 3 pushes down the spring 5, and the plate panel 5 and the contact portion 63 of the spring member 6 are brought into contact with each other as shown by a double line to conduct.

Therefore, the movable contact member 4 is disconnected from the power supply circuit of the base unit 9 unless the cordless telephone handset 8 is mounted. Industrial applicability

As is evident from the description based on the above embodiment, according to the terminal structure for a charging device of the present invention, even if a transformer is not used without using a line transformer, the device to be charged (slave) is used as the master. The movable contact member that contacts the charging terminal of the device to be charged is cut off from the power supply circuit of the parent device, so that there is no risk of electric shock unless the lever member is actuated by the protrusion of the device to be charged. It is safe.

Further, according to the terminal structure for a charging device of the present invention, it is possible to reduce the weight by eliminating the transformer, and to manufacture the battery at a low cost.

Claims

The scope of the claims

1. A frame member fixed to the housing of the charging device, a movable contact member that is fitted into a hole provided in the frame member and slides to contact a charging terminal of a device to be charged, and fixed to the frame member. A spring panel that is electrically connected to the conductor of the movable contact member via a coil spring, and is rotated by being supported by the frame member when the device to be charged is placed, A terminal structure for a charging device, comprising: a lever member for operating the plate panel to come into contact with a spring member.

2. The terminal assembly for a charging device according to claim 1, wherein the lever member is actuated by a projection provided in the vicinity of the charging terminal of the device to be charged so as to contact the plate panel and the spring member.