JPH0719096Y2 - Battery charger plug structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery charger plug structure, and in particular, the direction of a pole piece to be inserted into an outlet can be adjusted according to the position of the outlet and can be easily adjusted with respect to the main body. The present invention relates to a battery charger plug structure that can be assembled.

[0002]

2. Description of the Related Art A battery charger is used for charging a rechargeable battery, and as shown in FIG. 4, a case 10 in which a rechargeable battery is housed and a charging circuit is incorporated.
And a plug unit 11 that is connected to an outlet and supplies external power to the charging circuit. The case 10 is made of a plastic material or a transparent material. A concave portion 1 for providing a plug portion 11 at a corner where a front surface of the case 10 located on the front side in the drawing and an upper surface located on the upper side in the drawing intersect.
2 is formed so as to open on the front surface side and the upper surface side.

As shown in FIG. 5, a pair of through holes 13 are formed in the recess 12 near the bottom wall of the rear wall at predetermined intervals. Further, receiving grooves 14 extending outward from the side walls along the front surface of the case are formed near the bottom walls of the side walls facing each other in the recess 12. A compression spring 15 is housed in the receiving groove 14, and a support member 151 having a protrusion is attached to the tip of the spring 15.

The plug portion 11 has a support rod 16 arranged laterally along the front surface of the case, a pair of connecting pieces 17 electrically connected to a charging circuit, and a pair of pole pieces 18 inserted into an outlet. It is configured by combining and.
The support rod 16 is made of an electrically insulating material, and has tenons having a convex shape at both ends thereof. Support rod 1
The tenon 6 has a through hole 17 formed near the base end of the connecting piece 17.
In this state, the tip of each connecting piece 17 is inserted into the through hole 13 of the recess 12 and is fixed at a predetermined position. The projection of the support member 151 is fitted into the hole 181 formed in the pole piece 18. The elastic force of the spring 15 acts on the support member 151 in the direction toward the base end portion of the connection piece 17, and the pole piece 18 transfers the elastic force of the spring 15 and the base end portion of the connection piece 17. It is rotatably held between the support member 151 and the received support member 151. The pole piece 18 is in contact with the connection piece 17. By appropriately rotating the pole piece 18, the pole piece 18 can be easily connected according to the position of the outlet or the like.

[0005]

In the structure of the conventional plug portion 11 described above, when assembled in the case 10, the spring 15, the support member 151, the support rod 16, and the connection piece 1 are provided.
7 and the pole piece 18 must be assembled in order, but since each part is extremely small, there is a risk of dropping some or all of the parts unless the operator is careful in the assembly work. There is a problem in that the shape or structure of the parts is insufficiently designed, and the work efficiency at the time of assembly is poor, which in turn increases the manufacturing cost.

The present invention has been made in order to solve the problems associated with the above-mentioned prior art, and provides a plug structure in which a rotatable plug portion can be easily assembled to a main body according to the position of an outlet. The purpose is to provide.

[0007]

Means for Solving the Problems The present invention for achieving the above-mentioned object is to provide a main body (2) in which a rechargeable battery (4) is housed and a charging circuit is built in, and a pole piece to be inserted into an outlet. (33) having a plug part (3), and the plug part (3) is rotatably attached to the body part (2) so that the direction of the pole piece (33) can be adjusted. A plug structure for a battery charger, wherein the main body (2) has a rear wall, a bottom wall, and side walls facing each other at a corner where two adjacent surfaces intersect. A recess (21) for attaching the plug (3) is formed, and the plug part (3) is formed.
Is a pair of connecting pieces (3
2), a pair of pole pieces (33) rotatably riveted to the connection piece (32), and each pole piece (33) arranged between the pair of pole pieces (33). A pair of insertion ports (22) formed in the rear wall of the recess (21) having a connecting member (31) made of an electrically insulating material that engages and connects the bipolar pieces (33). ), The tip of each connection piece (32) is inserted, and the connection piece (32) is fixed to the recess (21).

Further, the plug part (3) is further provided with a support member (which is housed in a receiving groove (23) formed in the rear wall so as to be arranged between the insertion ports (22). 24) and the receiving groove
(23) and the supporting member (24), and an elastic means (26) for urging an elastic force that presses the supporting member (24) against the connecting member (31), An end surface of the connecting member (31) facing the supporting member (24) is formed in an arc shape, and a groove (311) is formed in the arc end surface, and the connecting member (24) is connected. A plug structure for a battery charger, in which a fitting protrusion (241) that fits into the groove (311) is formed on an end surface facing the member (31).

[0009]

The connecting piece and the pole piece are rivet-connected and integrally connected so as to be rotatable. Since the connecting piece and the pole piece are larger than the case of only each piece, they are easy to handle. Further, it suffices to insert the tip of each connection piece into the insertion port of the recess and fix the connection piece in the recess, and the plug part can be easily assembled to the main body. The assembled plug portion can freely rotate and adjust the pole piece.

Further, when the pole piece is rotationally adjusted, the elastic force of the elastic means causes the supporting member to come into pressure contact with the connecting member, and the fitting projection of the supporting member fits into the groove of the connecting member. The rotating position of the pole piece is retained.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing an embodiment of a battery charger plug structure according to the present invention, FIG. 2 is an exploded perspective view showing the battery charger plug structure shown in FIG. 1, and FIG. FIG. 1 is a vertical sectional view taken along the alternate long and short dash line 1.

As shown in the drawing, the battery charger according to this embodiment contains a case 2 as a main body in which a rechargeable battery 4 is housed and a charging circuit (not shown) is built in, and a pole piece 33 inserted into an outlet. It is configured by combining with the plug portion 3 having. The case 2 is mainly made of a plastic material. A concave portion 21 for mounting the plug portion 3 is formed at a corner where two adjacent surfaces of the case 2 intersect. In the illustrated example, the recess 21 is formed at the corner where the front surface of the case 2 located on the front side in the drawing and the upper surface located on the upper side in the drawing intersect so as to open to the front surface side and the upper surface side. The recess 21 formed in this way
Has a substantially L-shaped cross section, and has a rear wall, a bottom wall, and side walls facing each other.

A pair of insertion ports 22 are formed at a predetermined interval near the bottom wall of the rear wall of the recess 21. A receiving groove 23 having a predetermined depth is formed on the rear wall of the recess 21 so as to be arranged between the pair of insertion ports 22. The receiving groove 23 extends from the rear wall to the case 2
It extends toward the back of the and forms a blind hole. Further, as is apparent from FIG. 2, in the side walls of the recess 21 facing each other, a recess corresponding to the shape of the connection piece 32 is formed in order to fix the connection piece 32, which will be described later, inserted into the insertion port 22 to the recess 21. Are formed.

The plug portion 3 has a pair of connecting pieces 32 electrically connected to a charging circuit, a pair of pole pieces 33,
It is configured by combining with a connecting member 31 that connects these bipolar pieces 33. At the base end portion of the connection piece 32, a claw portion is formed which extends slightly outward and engages with the side wall of the recess 21 in order to ensure the fixing to the recess 21. The base end portion of the connection piece 32 and the base end portion of the pole piece 33 are integrally connected via a rivet joint, whereby the pole piece 33 is rotatable with respect to the connection piece 32. . The connecting member 31 is made of an electrically insulating material,
It is arranged between the pair of pole pieces 33. In addition, the connecting member 31 has the engagement projections 312 formed at both ends thereof in the pole piece 3.
By engaging with the engaging recess formed in 3, the pole piece 3
It is connected with 3. As a result, the connecting member 31 is adapted to rotate with the rotation of the pole piece 33.

The plug portion 3 further has a support member 24 housed in the receiving groove 23. A blind hole 25 is formed in the end face of the support member 24 that faces the bottom of the receiving groove 23. In the blind hole 25, that is, between the receiving groove 23 and the support member 24, a compression spring 26 as an elastic means for urging an elastic force for pressing the support member 24 against the connecting member 31 is arranged. ing.

An end surface of the connecting member 31 facing the supporting member 24 is formed in an arc shape. A plurality of groove portions 311 are formed on the arcuate end surface along the axial direction of the connecting member 31. On the other hand, a semi-circular fitting protrusion 241 that fits in the groove 31 is formed on the end surface of the support member 24 facing the connecting member 31. The support member 24, to which the elastic force of the spring 26 is urged, comes into pressure contact with the connecting member 31, and the fitting projection 241 has the groove 311.
When the pole piece 33 is fitted to the pole piece 33, for example, the pole piece 33 projects toward the front surface of the case 2 (the position shown by the solid line in FIG. 4) and the position housed in the recess 21 (shown by the dashed line in the same figure). Position) and held. In this way, the number and direction of positions where the pole pieces 33 are held are determined according to the number and positions of the groove portions 311 formed.

The plug portion 3 is assembled to the case 2 by engaging the connecting member 31 with the pole piece 33 that is rivet-connected to the connecting piece 32 and is integrally connected to connect the both pole pieces 33, and receive the recess 21. The spring 26 and the support member 24 are housed in the groove 23, the tip of each connecting piece 32 is inserted into the insertion port 22 of the recess 21, and the connecting piece 32 is fixed at a predetermined position in the recess 21. . Also, the spring 2
6, the support member 24 and the connecting member 31 are arranged at predetermined positions in the recess 21, and the pole piece 33 and the connecting piece 32 are inserted into the gap between the side wall of the recess 21 and the connecting member 31. The pole piece 33 may be engaged with and assembled.

At the time of this assembly, the connection piece 32 and the pole piece 33 are connected by rivet connection and are integrally connected. Since the connection piece 32 and the pole piece 33 are larger than the case where only the pieces 32 and 33 are used, handling is easy. As a result, assembly becomes easy. Further, since the spring 26 is arranged in the blind hole 25 of the support member 24, the spring 26 is less likely to fall off. The compression direction at the time of assembling the spring 26 coincides with the housing direction or insertion direction of the support member 24, the connection piece 32, the pole piece 33 and the connecting member 31, and further, the groove portion 311 of the connecting member 31 and the supporting member 24. Since the supporting member 24 is pushed by the connecting member 31 in a state where the supporting member 24 is fitted with the fitting protrusion 241 of FIG. 1, assembly can be easily performed, work efficiency at the time of assembly can be improved, and manufacturing cost can be reduced. You can

In the battery charger thus assembled, the pole piece 33 can be freely rotated and adjusted in accordance with the position of the outlet, and the convenience of charging the battery 4 is achieved. In addition, when the pole piece 33 is rotationally adjusted, the elastic force of the spring 26 causes the support member 24 to be pressed against the coupling member 31,
The fitting protrusion 241 of the support member 24 is the groove 3 of the connecting member 31.
Since it is fitted to 11, the rotation position of the pole piece 33 is held,
From this point as well, the convenience of charging work is achieved.

[0020]

As described above, according to the present invention, the connecting piece and the pole piece are rivet-connected and integrally connected so as to be rotatable, which is larger than the case of only each piece. Easy to handle. Further, since it suffices to insert the tip of each connection piece into the insertion port of the recess and fix the connection piece in the recess, the plug part can be easily assembled to the main body. Therefore, the work efficiency at the time of assembling can be improved, and the manufacturing cost can be reduced. The assembled plug unit can freely adjust the rotation of the pole piece according to the position of the outlet, so that the convenience of battery charging work is achieved.

Further, when the pole piece is rotationally adjusted, the supporting member is pressed against the connecting member by the elastic force of the elastic means, and the fitting protrusion of the supporting member fits into the groove of the connecting member. The rotating position of the pole piece is maintained, and the convenience of charging work is achieved also from this point. Even in this case, since the supporting member is pushed by the connecting member, the plug portion can be easily assembled to the main body portion.

[Brief description of drawings]

1 is an external perspective view showing an embodiment of a plug structure of a battery charger according to the present invention.

2 is an exploded perspective view showing a plug structure of the battery charger shown in FIG. 1. FIG.

FIG. 3 is a vertical sectional view taken along the alternate long and short dash line in FIG.

FIG. 4 is an external perspective view showing a plug structure of a conventional battery charger.

5 is a cross-sectional view taken along the alternate long and short dash line in FIG.

[Explanation of symbols]

2 ... Case (body part), 3 ... Plug part, 4 ...
Rechargeable battery, 21 ... concave part, 22 ... insertion port, 23 ... receiving groove, 24 ... support member,
241 ... Fitting projection, 26 ... Compression spring (elastic means), 31 ... Connecting member, 311 ... Groove,
32 ... connection piece, 33 ... pole piece.

Claims (2)

[Scope of utility model registration request] 1. A main body (2) accommodating a rechargeable battery (4) and having a built-in charging circuit, and a plug (3) having a pole piece (33) to be inserted into an outlet, The plug part (3) so that the direction of the pole piece (33) can be adjusted.
Is a plug structure of a battery charger rotatably attached to the main body (2), wherein the main body (2) has a rear wall and a bottom at a corner where two adjacent surfaces intersect. To have a wall and side walls facing each other,
A recess (21) for mounting the plug part (3) is formed, and the plug part (3) is a pair of connection pieces (32) electrically connected to the charging circuit.
A pair of pole pieces (33) rotatably riveted to the connection piece (32), and arranged between the pair of pole pieces (33) to engage with each pole piece (33). And a connecting member (31) made of an electrically insulating material for connecting these bipolar pieces (33), and a pair of insertion openings (22) formed in the rear wall of the recess (21).
Insert the tip of each connection piece (32) to, the connection piece (32)
A plug structure for a battery charger, which is fixed to the recess (21). 2. The support member (3) is housed in a receiving groove (23) formed in the rear wall so as to be arranged between the insertion ports (22). 24), provided between the receiving groove (23) and the support member (24),
Repulsion means (26) for urging elastic force to press the support member (24) against the connecting member (31), and the supporting member (24) in the connecting member (31). The end surface facing the is formed in an arc shape, and the groove (3
The fitting protrusion (241) fitted into the groove (311) is formed on the end surface of the support member (24) facing the connecting member (31). Battery charger plug structure.