JPH02162669A - Plug supporting structure of electric apparatus - Google Patents

Abstract

PURPOSE:To prevent accidental rotation of a plug blade in the receiving direction and improve operating property of a plug supporting mechanism by providing resistance for rotation of the plug blade both in the projecting and receiving directions and providing a resistance adding means for causing the resistance in the receiving direction to be larger than that in the projecting direction. CONSTITUTION:When a plug blade 3 is in the received state, the end surface of a biasing member 36 for the middle rib 32 of three ribs 31-33 abut the side surface of the rib 31, and the end surface of the biasing member 36 abut the side surface of the rib 31. At that time, a plug blade 3 is not in contact with a contact spring 35. When the plug blade 3 is rotated from this state, the rib 32 presses an inclined surface at the lower side of a V-shaped groove 37 in the biasing member 36 so that it recedes against a spring 38 by the biasing member 36, and provides resistance against this rotation. When the plug blade 3 is in the projected state, the rib 33 is positioned in the groove 37 in the biasing member 36 and the end surface of the biasing member 36 abut the side surface of the rib 32, so that the biasing member 36 presses the side surface of the rib 32 to retain the plug blade 3 in the projected state.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a support structure for a plug in an electrical device, and more particularly to a support structure for a plug in which a plug blade is protruded and accommodated by rotation.

[Conventional technology]

There are various types of electrical equipment with rotatable plug blades, but when the plug blade is pulled out and protrudes,
If the plug blade does not fall over accidentally, it will cause inconvenience when inserting the plug blade into an outlet. For this reason, conventionally, clicks have been made to occur in two states: a state in which the blade is retracted and a state in which the blade is protruded.

[Problem to be solved by the invention]

However, with conventional products of this type, the resistance value when rotating the blade to set it in the protruding state was the same as the resistance value when rotating the blade for storage. However, if the resistance value to prevent the blades set in the protruding state from moving inadvertently is increased, the resistance value when setting the blades in the protruding state also increases, making it inconvenient to use. The present invention has been made in view of these points, and its purpose is not only to prevent the blade from inadvertently moving, but also to easily set the blade in a protruding state. To provide a plug support structure for electrical equipment that is easy to use.

[Means to solve the problem]

Therefore, the present invention provides a plug support structure for an electrical device in which the proximal end of the plug blade is rotatably attached to the device body so that the plug blade can be freely protruded and stored. The present invention is characterized in that a resistance adding means is provided which provides resistance to both of the above, and has a larger resistance value to the rotation in the retracting direction than to the rotation in the protruding direction. [Function] According to the present invention, although the operation to protrude the plug blade can be performed easily, the blade can be moved in the direction in which the plug blade is retracted, that is, in the direction in which it will be difficult to insert the plug blade into an outlet if it is rotated carelessly. Rotation requires a large force, and the purpose is to prevent the blade from inadvertently rotating in the storage direction. [Example] The present invention will be described in detail below based on the illustrated embodiment.The illustrated electric device is used to heat the hair curler 2 shown in FIG. As shown in the figure, the main body 1 of the device is constituted by an upper housing 12 and a lower housing 13, and three rod-shaped supports 11 on which the hair curler 2 is attached are attached from the upper surface of the upper housing 12 upwardly. It is built protruding towards. Inside the device body 1, a pair of plug blades 3, 3 with a rotating shaft 30 attached to the proximal end are rotatably arranged, and each support part has a tapered shape with a tapered end. 11 includes a pair of connection terminals 4 connected to both plug blades 3, 3, respectively.
14 in the figure is this support part 11.
A protrusion 17 for lifting the hair curler 2 from the upper surface of the device main body 1 when the hair curler 2 is attached to the device is a support column that protrudes from the lower housing 23 and supports the connection terminals 41 and 42. The hair curler 2 is equipped with a heating element 21 made of a positive temperature coefficient thermistor or the like, and a pair of electrode plates 22 and 23 that are in contact with both sides of the heating element 21.
．． If the connection terminal pin 24 is inserted into the support part 11 through the insertion hole 18 opened in the end face of the support part 11, the connection will be made through the connection terminal pin 24. Terminals 41 and 42 and the picture electrode plate 2
2.23 is connected. The upper end surface of the support portion 11 is a smooth concave surface in order to facilitate insertion of the connection terminal pin 24 into the insertion hole 18. In addition, each connection terminal 41
．． 42 is constructed integrally with a terminal plate 40.40 shown in FIG. It is now connected. 43 in the figure is a fuse. Furthermore, each support part 11 has both upper and lower housings 12°1.
The supporting parts 11 are provided at equal distances from the screws 26 that connect the supporting parts 11, and the spacing between the supporting parts 11 is also the same. The pair of blades 3, 3, which are rotatable by the pivot shaft 30 being pivotally supported by the device main body 1, have two blades 3, 3 when housed in the device main body 1. The tip thereof is located within a recess 16 formed on the lower surface of the device main body 1. This recess 16 has dimensions C, D, and E shown in FIG. 3 and A dimension shown in FIG. It is made so that it can be grasped. Now, regarding the rotation of the plug blades 3, 3, resistance is created both when the blades are rotated to protrude and when they are rotated and retracted. This resistance adding means constituted by the force body 36 will be explained. As is clear from FIG. 1, the rotating shaft portion 30 fixed to the base ends of the two plug blades 3, 3 is provided with three radial ribs 31, 32, and 33 arranged at intervals of 90'. has become,
The biasing body 36, which is biased toward the rotating shaft portion 30 by the spring 38, has a V-shaped groove 37 on the end surface on the rotating shaft portion 30 side. Now, when the plug blade 3 is housed in the device body 1, as shown in FIG. 1(a), the three ribs 31,
32. The center rib 32 of 33 is the side 3 of the biasing body 36.
7, and the end surface of the biasing body 36 is in contact with the side surface of the rib 31. Further, at this point, the blade 3 is not in contact with the contact spring 35. If the blade 3 is rotated from this state, the rib 32 will be
By pressing the inclined surface of the letter-shaped groove 37 on the lower side in the figure, the biasing body 36 is moved back against the spring 38, so that resistance is provided to this rotation. When the plug blade 3 is protruded, the rib 33 is located within the groove 37 of the biasing body 36, and the end surface of the biasing body 36 is in contact with the side surface of the rib 32, as shown in FIG. The blade 32 is held in a protruding state by pressing the side surface of the lip 32 by the biasing body 36.
The plug blade 3 can be smoothly inserted into an outlet. When the plug blade 3 is rotated in the opposite direction from the protruding state and stored, the initial angle of rotation is 30', during which the rib 33 presses against the upper inclined surface of the groove 36 in the figure. Biasing body 3
6 is moved backward against the spring 38, thereby providing resistance to the rotation of the blade 3 in the storage direction. At this time, the upper slope of the groove 37 that the rib 33 comes into sliding contact with when the plug blade 3 is stored is higher than the slope of the groove 37 on the lower side in the figure with which the rib 32 comes into sliding contact when the plug blade 3 is protruded. Since the angle of inclination is larger in the case of , the resistance generated by retracting the biasing body 36 biased by the spring 38 is greater when rotating the stopper blade 3 in the storing direction. It is something that

【Effect of the invention】

As described above, in the present invention, resistance is provided to both the rotation in the protrusion direction and the rotation in the storage direction of the plug blade, and
Since a resistance adding means is provided that provides greater resistance to rotation in the retracting direction than rotation in the protruding direction, the operation to protrude the blade can be performed easily, but the operation in the direction in which the blade is retracted, that is, inadvertently Rotating the blade in a direction that would make it difficult to insert it into an outlet requires a large amount of force, so care must be taken to prevent the blade from accidentally turning in the direction of storage. It is removable and easy to use.

[Brief explanation of the drawing]

1(a) and (b) are sectional views of one embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a bottom view of the same, and FIGS. 4 and 5 are sectional views of the same, Fig. 6 is a plan view of the same as above with the upper housing removed, and Fig. 7 is an exploded perspective view of the plug blade, biasing body, and spring, where 1 is the main body of the device, 3 is the plug blade, and 30 is the rotating part. The shaft portion, 36 is a biasing body, and 38 is a spring. Figure 2a2 Agent Patent Attorney Ishi 1) Long Seven\T

Claims (1)

[Claims] (1) Rotatably attach the base end of the plug blade to the device body,
In a plug support structure for an electrical device in which the plug blade can be freely protruded and retracted, it provides resistance to both the rotation of the plug blade in the protruding direction and the rotation in the retracting direction, and provides resistance to rotation in the retracting direction rather than rotation in the protruding direction. A plug support structure for electrical equipment, characterized in that it is provided with a resistance adding means that increases the resistance value given by the plug.