JPH0724793Y2 - Rotating plug adapter - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a rotary plug adapter in which a blade is projected from a case, a blade receiving spring for receiving a plug is provided in the case, and the blade is rotatable with respect to the case.

[Prior art]

Conventionally, there has been provided a plug adapter in which a blade to be inserted into an outlet and a blade receiving spring for receiving another blade provided to a plug are provided in the same case. As a conventional plug adapter, for example, as shown in FIG. 8 (a), a power blade blade insertion opening 18 'for receiving a pair of power blade blades and a ground blade insertion slot for receiving a ground blade are provided.
18 "is opened in the case 1, a pair of power supply blades 4'projects from the case 1, and the grounding terminal 17 is in the case 1
There is a configuration provided in. This is a plug adapter used when inserting a plug having a ground blade into an outlet that cannot receive the ground blade, and has a function of changing the form of the plug. Further, as shown in FIG. 8B, there is a configuration in which a blade insertion opening 18 for receiving a pair of blades is opened in the case 1 and a pair of blades 4 protrude from the case 1. A blade receiving spring provided corresponding to the blade insertion port 18 is electrically connected to the blade, and an electric wire 9 drawn out from the case is electrically connected to the blade. This has a function of branching the power supply into two systems when the blade is inserted into an outlet. On the other hand, as shown in FIG. 9, there is a blade 4 protruding from the one surface of the case 1 so as to be rotatable around an axis orthogonal to the one surface of the case 1. The present inventors have proposed a rotary type insertion plug configured so that the electrically connected electric wire 9 is pulled out from the case (for example, Japanese Patent Application No. 1-8136).

[Problems to be solved by the device]

The plug adapter as shown in FIG. 8 is for a format conversion that is interposed between a plug and an outlet that do not correspond to each other and enables electrical connection between the plug and the outlet, or a power supply system. Since it is for branching, there is a problem that it is not possible to change the pull-out direction of the electric wire connected to the plug. On the other hand, in the rotary type insertion plug as shown in FIG. 9, although the drawing direction of the electric wire 9 can be changed, since the electric wire 9 is connected to the terminal portion, it is possible to rotate each electric device individually. It is necessary to provide a mold insertion plug, and there is a problem that it cannot be used when a plug of a commercially available electric device is connected to an outlet. Also, with rotary plugs, the orientation of the case may not match the orientation of the blade due to the rotation of the blade, but when inserting the blade into the outlet in this state, the orientation of the case In addition to having to insert the plug blade in the same direction as the outlet, the plug blade is hidden in the case at this time, so that it often takes time to insert the plug blade. The present invention is intended to solve the above-mentioned problems, and can receive plugs of various electric devices, and further, the blade can be freely rotated with respect to the case, and the plug can be arbitrarily connected to the outlet. It is an object of the present invention to provide a rotary plug adapter that can be inserted from the direction, and that can be easily inserted and connected to the outlet of the blade.

[Means for Solving the Problems]

In the present invention, in order to achieve the above object, a plurality of blades protruding on one surface of the case and rotating around one axis orthogonal to the one surface, and a protruding direction of the blades at a fixed position in the case. Are a plurality of blade receiving springs that are arranged so as to receive plugs inserted from orthogonal directions and are electrically connected to the blades, respectively. And a movable frame that is rotatably arranged together, and a blade insertion opening is opened at a position corresponding to the blade receiving spring on one surface adjacent to the one surface in the case, and on the surface opposite to the one surface of the case. Is provided with a display window facing a display plate which rotates integrally with the movable frame.

[Action]

According to the above configuration, since the blade receiving spring can receive the blades of other plugs with the blade inserted in the outlet, the plugs of various electric devices can be received. Further, since the protruding direction of the blade and the direction of inserting another blade into the blade receiving spring are orthogonal to each other, it is possible to connect to the outlet even in a narrow place such as a place hidden by furniture and the like. Since the blade is rotatably arranged with respect to the case, the plug can be inserted from any direction within the plane orthogonal to the protruding direction of the blade, and with respect to the case. The direction of the rotatable blade is
On the surface opposite to the one from which the blade of the case projects,
This can be seen from the display plate facing the display window.

【Example】

As shown in FIG. 1, the case 1 is formed by connecting a body 11 and a cover 12 with an assembly screw 13 that is screwed into the body 11 through the cover 12. The cover 12 has a circular opening window
14 is bored, and a circular display window 15 is opened in the body 11 coaxially with the opening window 14. A pair of terminal plates 2 are fixed in the body 11. The terminal plate 2 is provided with a blade receiving spring 3 at one end of the connecting piece 2a, and at the other end thereof, a connecting piece 2b protruding in a direction substantially orthogonal to the connecting piece 2a.
It is fixed to the body 11 by press-fitting the fixing piece 2c of the connecting piece 2a, which is formed in a desired shape, and which is provided in a protruding manner, into the fixing hole 11a formed in the body 11 as required.
The connection pieces 2b of both terminal plates 2 are separated from each other in the thickness direction of the terminal plates 2, and the blades 4 are respectively coupled to the tip ends of the connection pieces 2b. The blade 4 is formed in a substantially L shape having a connecting piece 4a bent in the thickness direction at the base, and the connecting piece 4a is the connecting piece.
It is rotatably connected to 2b. That is, the connection piece 2b
The blade 4 is rotatably connected to the terminal plate 2 by a caulking pin (not shown) inserted into the connecting piece 4b from the side. Further, in order to increase the frictional force between the terminal plate 2 and the blade 4, a disc spring (that makes the terminal plate 2 and the blade 4 closely contact each other between the head of the caulking pin and the terminal plate 2) (Not shown) is sandwiched. The caulking pins are arranged on substantially the same axis in both terminal plates 2, and the centers of rotation of both blades 4 are substantially aligned. As described above, the blade 4 is rotatable about one axis in the plane orthogonal to the protruding direction. The blade receiving spring 3 is provided with a pair of spring pieces 3a having spring forces in directions approaching each other, and is formed so that a blade can be sandwiched between both spring pieces 3a. Here, the insertion direction of the blade to the blade receiving spring 3 is formed so as to be orthogonal to the protruding direction of the blade 4. A movable frame 5 made of an insulating material and having a bottomed cylindrical shape is attached to the blade 4. The movable frame 5 passes through the opening window 14 and the case 1
The blade 4 is exposed on the outer peripheral surface of the case 1 and projects from the case 1 through the insertion hole 5a formed in the movable frame 5. A press-fitting piece 4c that is press-fitted into the insertion hole 5a of the movable frame 5 is inserted into one of the blades 4.
Is formed so that the movable frame 5 does not drop from the blade 4. Further, since the blade 4 has lengths and shorts, it is necessary to make sure that the positions of components are not mistaken, but the presence of the press-fitting piece 4c can prevent misassembly. On one surface of the case 1, a blade insertion opening 18 is formed at a portion corresponding to each blade receiving spring 3. The movable frame 5 has a stepped portion 5b formed around the periphery of the opening window 14 at the periphery thereof.
Even if a large pulling force is applied to the opening 5
The movable frame 5 is prevented from rattling by being locked to the periphery of the movable frame 5. Also, one blade 4 is a press-fitting piece 4c.
Is fixed to the movable frame 5, and the other blade 4 has a connecting portion with the terminal plate 2 abutting against the back surface of the movable frame 5. Therefore, when a large pulling force is applied to the blade 4, The load can be received by the cover 12 via the connector 5, and a large force can be prevented from being applied to the joint between the terminal plate 2 and the blade 4.
The opening-side end surface of the movable frame 5 faces the tip end surface of an annular rib 21 projecting from the inner peripheral surface of the body 11. A rib 22 is provided on the tip surface of the rib 21, and the end surface of the movable frame 5 is rib 22.
To fit. With this configuration, the movable frame 5 can be guided by the ridges 22 and rotated without rattling.
Further, since the protrusion 22 provided on the rib 21 positions the movable frame 5, there is an advantage that the movable frame 5 can be easily assembled at the time of assembly. A locking projection 4d is provided on the peripheral edge of the connecting piece 4a of the one blade 4 on which the press-fitting piece 4c is formed, and the display plate 6 is coupled to the locking projection 4d. The display plate 6 is formed in a circular shape and is exposed from the body 11 through the display window 15. The display plate 6 is provided with a locking rib 6a having a locking recess 6b that engages with the locking projection 4d of the blade 4, and the display plate 6 rotates together with the blade 4. As shown in FIG. 2 (b), a bottom portion of the locking rib 6a is formed with a hem portion 6c having an arcuate cross section, and when the display plate 6 rotates, the locking rib 6a moves from the blade 4 to the locking rib.
Strength is increased to withstand the external force acting on 6a. Further, the inner peripheral surface of the locking recess 6b is formed in a shape that fits the locking projection 4d without rattling. As shown in FIG. 2 (c), a triangular mark 7a serving as a pointer is engraved on a portion of the display plate 6 exposed from the body 11, and a peripheral portion of the display window 15 is shown in FIG. As shown in, the mark 8 indicating the position is marked. further,
A jig insertion groove 7b into which a jig such as a driver can be inserted is formed on the same surface as the mark 7a. The jig insertion groove 7b is marked
It is provided so as to form an arrow together with 7a, thereby enhancing the visibility of the mark 7a. According to the above configuration, when the movable frame 5 rotates with respect to the case 1, the position of the mark 8 indicated by the mark 7a changes. Therefore, by aligning the direction of the blade 7 with the mark 7a, even when the blade 4 rotates with respect to the case 1, the surface of the opposite side of the surface where the blade 4 projects due to the mark 7a. The orientation of the blade 4 can be known, and therefore, even when the orientations of the case 1 and the blade 4 are different, there is no need to take time and effort to insert the blade 4 into an outlet. Further, when the plug blade 4 is inserted into the outlet, the position of the mark 7a is fixed. Therefore, when the case 1 is rotated so that the plug blade insertion opening 18 is in the desired direction, the mark provided on the case 1 It is possible to know the range in which the case 1 can be rotated by 8. Further, since the marks 7a, 8 are provided on the surface opposite to the surface on which the blade 4 projects, the marks 7a, 8 can be seen even when they are inserted into the outlet, and the rotation range of the case 1 with respect to the movable frame 5 is easy. You will be able to confirm. According to the above configuration, as shown in FIG.
With the plug 23 inserted, the plug 23 can be rotated in an arbitrary direction within a range of 180 ° in a plane orthogonal to the protruding direction of the blade 4, so that the plug 23 can be inserted in any direction within this range. You can do it. Further, since the inserting direction of the plug 23 is orthogonal to the projecting direction of the blade 4, the projecting amount of the case 1 from the outlet 20 is small. However, it can be used and the case 1 can be easily rotated. By the way, as shown in FIG. 4, a step portion 19 is formed on both sides of the surface of the case 1 where the blade insertion opening 18 is formed, and the step portion 19 forms a width W of the case 1.
Is set to be substantially equal to the width of the plug 23.
Therefore, when the plug 23 is connected, the side surface of the plug 23 and the side surface of the step portion 19 of the case 1 have a continuous appearance, and an excellent appearance is obtained. When removing the plug 23 from the case 1,
As shown in the figure, since the step portion 19 is hooked on the finger, it is easy to apply force, and it is possible to easily pull it out. The blade receiving spring 3 may have a shape as in the above-described embodiment, or may have a structure having a lock mechanism for preventing the blade from coming off. That is, as shown in FIG. 6, it is assumed that a well-known lock mechanism that forms the blade insertion opening 18 in an arc shape and prevents the blade from coming off is installed in the case 1. The wack mechanism may be operated by inserting 24 in a state of being inclined as shown by a broken line in FIG. 6 and then rotating it in a direction orthogonal to the protruding direction of the blade 24. According to this configuration, the plug 23 cannot be easily removed, and when the electric wire 25 connected to the plug 23 is hooked by a foot or the like, as shown by a broken line in FIG.
By rotating, the tension acting on the electric wire 25 can be released, and the electric wire 25 can be prevented from falling off from the outlet 20.

[Effect of device]

The present invention, as described above, includes a plurality of blades protruding from one surface of the case and rotating around one axis orthogonal to the one surface.
A plurality of blade receiving springs which are arranged at fixed positions in the case so as to be able to receive a plug inserted from a direction orthogonal to the protruding direction of the blade, and which are electrically connected to the blades, respectively. And a movable frame that holds the blade and is rotatably arranged together with the blade with respect to the case, and inserts a blade insertion opening at a position corresponding to the blade receiving spring on one surface adjacent to the one surface of the case. Since the blade receiving spring can receive the blades of other plugs with the blade inserted in the outlet, it has the advantage that it can receive the plugs of various electric devices. . Moreover, since the protruding direction of the blade and the direction of inserting the plug into the blade receiving spring are orthogonal to each other, it is possible to connect to an outlet provided in a narrow place such as a place excellent for furniture and the like. Since the blade is rotatably arranged with respect to the case, the plug can be inserted from any direction within the plane orthogonal to the protruding direction of the blade, and in addition to the above-mentioned one surface of the case. On the surface opposite to the above, there is a display window that holds the blade and faces a display plate that rotates integrally with the blade and is rotatable with the blade. Even when the direction of the case and the direction of the blade are not the same when inserting, the direction of the blade can be shown to the user by the display plate facing the display window. The effect that it does not take time and effort Achieve the.

[Brief description of drawings]

1 is an exploded perspective view showing an embodiment of the present invention, and FIGS. 2 (a) to 2 (c) are rear views, side views, and plan views showing the display plates used therein, respectively, and FIG. 3 is the same as above. Operation explanatory diagram, FIG. 4 is a plan view of the same as above, FIG. 5 is an operation explanatory diagram of the same as above, and FIG.
FIG. 7 is a perspective view showing another embodiment of the present invention, FIG. 7 is an operation explanatory view of the same as above, FIGS. 8 (a) and 8 (b) are perspective views showing a conventional example, and FIG. 9 is another conventional example. It is a top view which removed the cover which shows. 1 ... Case, 3 ... Blade receiving spring, 4 ... Plug blade, 5 ... Movable frame, 18
… Plug blade insertion port.

Claims (1)

[Scope of utility model registration request] 1. A plurality of blades projecting from one surface of a case and rotating around one axis orthogonal to the one surface, and a plurality of blades inserted into a fixed position in the case from a direction orthogonal to the projecting direction of the blades. A plurality of blade receiving springs that are arranged so as to be able to receive the plugs and that are electrically connected to the respective blades, and that the blades are held together with the blades so as to be rotatable with respect to the case. And a movable frame provided on a side of the case adjacent to the one side, a blade insertion opening is provided at a position corresponding to the blade receiving spring, and the movable frame is provided on a side opposite to the one side of the case. A rotary plug adapter provided with a display window facing a display plate that rotates together with the display window.