JP2765895B2 - Plug support structure for electrical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

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

[Prior art]

There are various types of electrical equipment with a rotatable mounting blade, but when these blades are pulled out and protruded, it is necessary to prevent the blade from accidentally falling down.
Inconvenience occurs when plugging the blade into an outlet. For this reason, a click is conventionally generated in two states, that is, a state in which the blade is stored and a state in which the blade is protruded.

[Problems to be solved by the invention]

However, in this type of conventional type, the resistance value when the blade is rotated and set to the protruding state is the same as the resistance value when the blade is rotated for storage. However, if the resistance value for preventing the blade set in the protruding state from being carelessly moved is increased, the resistance value when the blade is set in the protruding state is also increased, which is inconvenient. The present invention has been made in view of such a point, and the purpose thereof is not only that the blade does not move carelessly, but also that the blade can be easily set in a protruding state. Another object of the present invention is to provide a plug support structure for electrical equipment that is excellent in usability.

[Means for Solving the Problems]

Thus, according to the present invention, in a plug support structure of an electric device in which a base end of a blade is rotatably attached to a device main body and the blade is protruded and housed, a spring pressure by a single spring is used to rotate the blade. By adding to the moving shaft portion, elastic locking of two states of the protruding state and the storage state which are both ends of the rotation area of the blade and application of resistance for each rotation of the blade from one state to the other state. And a direction-dependent resistance value setting unit that increases the resistance value for the storage direction rotation from the protruding state to the resistance value for the protruding direction rotation from the storage state. The feature is that it is provided. [Operation] According to the present invention, the state in which the blade is protruded and the state in which the blade is housed can be maintained by the application of spring pressure by a single spring. Although it can be performed lightly, the rotation of the blade in the direction to store the blade, that is, the direction in which the operation of inserting into the outlet becomes difficult if it is carelessly rotated, requires a large force, and the care of the blade is careless. Rotation in the storage direction is prevented. [Example] Hereinafter, the present invention will be described in detail with reference to an illustrated example. The illustrated electric device is used for heating the hair curler 2 illustrated in FIG. 5, and FIGS. As shown in the figure, the device main body 1 has an upper housing 12 and a lower housing 13, and a three-bar-shaped supporting portion 11 on which the hair curler 2 is mounted is formed from an upper surface of the upper housing 12.
Are projected upward. In the apparatus main body 1, a pair of blades 3, 3 having a pivot shaft 30 attached to the base end side are rotatably arranged, and each of the tapered support portions having a tapered distal end side. Inside 11 is a double blade
A pair of connection terminals 41, 42 respectively connected to 3, 3 are provided. In the figure, reference numeral 14 denotes a ridge for lifting the hair curler 2 from the upper surface of the device main body 1 when the hair curler 2 is mounted on the support portion 11, and 17 denotes a projection provided from the lower housing 23 to connect the connection terminals 41 and 42. It is a supporting column to support. The hair curler 2 includes a heating element 21 made of a positive temperature coefficient thermistor and the like inside thereof, and a pair of electrode plates 22 and 23 contacting both surfaces of the heating element 21, and a coaxial cable connected to each of the electrode plates 22 and 23. It has connection terminal pins 24 in the shape of a support
If the connection terminal pin 24 is inserted into the support portion 11 from the insertion hole 18 opened on the end face of the
The electrode plates 41 and 42 are connected to the electrode plates 22 and 23. The support section
The upper end surface of 11 has a smooth concave surface in order to facilitate insertion of the connection terminal pin 24 into the insertion hole 18. The connection terminals 41, 42 are formed integrally with the terminal plates 40, 40 shown in FIG. 6, and the two terminal plates 40, 40 are connected via contact springs 35, 35 bent in a rectangular shape. The blades 30 are connected to the blades 30, 30, respectively. In the figure, reference numeral 43 denotes a fuse. Further, each support portion 11 is provided at an equal distance from the screw 26 connecting the upper and lower housings 12, 13, and the interval between the support portions 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 body 1, when the blades 3 are stored in the device body 1, the blades 3, 3, Is located in a recess 16 formed on the lower surface of the device main body 1. The recess 16 is made sufficiently large by the dimensions C, D, and E shown in FIG. 3 and the dimension A shown in FIG. It is made to be able to grasp. With respect to the rotation of the blades 3, 3, resistance is generated both when the blade is protruded and when it is rotated and stored. 36
A description will be given of the resistance adding means constituted by. As is clear from FIG. 1, the rotating shaft 30 fixed to the base ends of the two blades 3, 3 has three ribs 31, 3 arranged at intervals of approximately 90 °.
2, 33 are radially provided, and a biasing body 36 urged toward the rotating shaft 30 by a spring 38 has a V-shaped groove 37 on the end surface on the rotating shaft 30 side. It is provided with. Now, when the blade 3 is in the state of being housed in the apparatus main body 1, as shown in FIG.
The center rib 32 of 2 and 33 is in contact with the groove 37 of the biasing body 36, and the end face of the biasing body 36 is in contact with the side surface of the rib 31. At this time, the blade 3 is a contact spring.
No contact with 35. When the blade 3 is rotated from this state, the urging member 36 is pressed against the spring 38 by the rib 32 pressing the inclined surface of the V-shaped groove 37 of the urging member 36 on the lower side in the figure. In order to back up, resistance is given to this rotation. When the blade 3 is protruded, the rib 33 is located in the groove 37 of the urging member 36 and the end face of the urging member 36 contacts the side surface of the rib 32 as shown in FIG. When the urging member 36 presses the side surface of the rib 32, the
Numeral 32 is held in a protruding state, so that the operation of inserting the blade 3 into the outlet can be performed smoothly. When the blade 3 is stored by rotating it in the opposite direction from the protruding state, the rib is kept at about 30 ° as the initial rotation angle.
33 presses the inclined surface on the upper side of the groove 36 in the drawing to retreat the urging body 36 against the spring 38.
Is provided with respect to the rotation of the in the storage direction. At this time, the groove in which the rib 32 slides when the blade 3 is projected.
Since the inclination angle on the upper side of the groove 37 with which the rib 33 slides when the blade 3 is stored is larger than that on the lower side in FIG. The resistance generated by retracting the biased urging body 36 is greater when the blade 36 is rotated in the direction in which the blade 3 is stored.

【The invention's effect】

As described above, in the present invention, the state where the blade is protruded and the state where the blade is housed can be maintained by applying a spring pressure by a single spring, and the resistance given to rotation is reduced. Although the operation to make the blade protrude can be performed lightly, depending on the moving direction, the rotation of the blade in the direction in which the blade is stored, that is, the direction in which it is difficult to insert it into the outlet if it is rotated carelessly, is performed. The movement requires a large force, and prevents the blade from being rotated inadvertently in the storage direction, and is easy to use.

[Brief description of the drawings]

1 (a) and 1 (b) are cross-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, FIG. 4 and FIG. FIG. 6 is a plan view of the same with the upper housing removed, and FIG. 7 is an exploded perspective view of a blade, a biasing body, and a spring. A shaft portion, 36 indicates a biasing body, and 38 indicates a spring.

Claims (1)

(57) [Claims] 1. A plug support structure for an electric device in which a base end of a blade is rotatably attached to an apparatus main body so that the blade can be protruded and housed. By adding to the shaft portion, elastic locking in two states of a protruding state and a stored state which are both ends of the rotation area of the blade and imparting resistance for each rotation of the blade from one state to the other state are performed. And a direction-dependent resistance value setting unit for increasing the resistance value in the storage direction rotation from the protruding state to the resistance value in the protruding direction rotation from the storage state. A plug support structure for electrical equipment, characterized in that it is a plug support structure for electrical equipment.