JPH0636505U - Electrical equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent accidental release of the locked state by the lock member that holds the connected state of the power cord. A release operation knob 22 that releases a locked state by a lock member that holds a connection state of a power cord and a switch operation knob 10 that can open and close an energizing circuit to a load 5 are provided on an outer surface of an electric device. Place them on different surfaces. As a result, it is possible to prevent the release operation knob 22 from being accidentally erroneously operated by a hand gripping the surface having the switch operation knob 10.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to electric appliances such as a hair dryer, an electric razor, a futon dryer, an iron, and an electric kettle that allow the plug at the tip of the power cord to be freely inserted and removed, and has taken measures to prevent the power cord from being accidentally pulled out. Is.

[0002]

[Prior art]

 As an electrical device of this kind, the plug on the end of the power cord should not be accidentally pulled out of the plug socket on the electrical device side during use, and the terminal on the plug side and inside the plug socket should be prevented from wobbling and arcing. There is a lock member for securely holding the contact state with the plug pin, which is releasably attached to the plug, and a release operation knob for releasing the engagement by the lock member after use (unknown document).

[0003]

[Problems to be solved by the device]

 However, in the above-described electric device including the release operation knob, the switch operation knob of the power switch and the release operation knob are arranged side by side on the same outer surface of the electric device. Therefore, the knobs of both may be mistakenly operated during use. In particular, for hand-held electric devices, such as electric razors and hair dryers with handles, the switch operation knob and the release operation knob are usually arranged on the same outer surface of the electric device, focusing on the ease of operation of both. It is provided. However, in this case, when using the switch operation knob and the release operation knob, hang the thumb or forefinger on the same surface on which the switch operation knob is provided, and use the switch operation knob with the thumb or forefinger. However, in such a case, if the release operation knob is operated by mistake, the engagement by the lock member is inadvertently released, causing the power cord to slip out or wobble and generate an arc.

The object of the present invention is to solve these problems, and in an electric device equipped with a switch operation knob and a release operation knob on the outer surface, the operator must be carefully arranged for both. The purpose is to prevent erroneous operation and prevent the power cord from accidentally coming off and wobbling during use.

[0005]

[Means for Solving the Problems]

 In the present invention, as in the illustrated example, the load 5, the switch operating knob 10 that can open and close the energizing circuit to the load 5, and the plug receptacle into which the plug 15 of the power cord 14 that supplies power to the load 5 is inserted and removed. And an unlocking knob 22 for unlocking the unlocking restriction by the lock member 19, and the unlocking knob 22. Is disposed on a surface different from the surface on which the switch operating knob 10 is disposed on the outer surface of the electric device.

[0006]

[Action]

 Since it is easy to properly use the switch operation knob 10 and the release operation knob 22 that are respectively disposed on different surfaces, it is possible to operate the release operation knob 22 where the switch operation knob 10 should be operated. It is possible to prevent the power cord 14 from coming out of the plug receptacle 12 and wobbling due to the erroneous operation.

[0007]

【Example】

 An embodiment in which the present invention is applied to a hair dryer will be described with reference to the drawings. In FIG. 1, this hair dryer has a cylindrical main body case 1 that is long in the front-rear direction, and a handle 2 that is attached so as to project downward from the lower portion of the peripheral surface near the rear part of the main body case 1. The main body case 1 has a blowout port 3 on the front end side and a suction port 4 on the rear end side, and between the blowout port 3 and the suction port 4 in the main body case 1, a heater 6 serving as a load 5 and The motors 8 that rotate and drive the fans 7 are housed in front and rear respectively. A push-type switch operating knob 10 is mounted on the front outer surface 2a of the handle 2 so that the power switch 9 for opening and closing the energizing circuit to the load 5 can be switched on and off.

In FIG. 2 and FIG. 3, a square tube-shaped plug receiving port 12 is formed on the bottom side outer surface 2 c of the handle 2, and a pair of plug pins 13 are planted on the inner bottom of the plug receiving port 12. . On the other hand, the plug 15 at the tip of the power cord 14 which is inserted into and removed from the plug receiving port 12 is built in the pin receiving terminal 16 corresponding to the plug pin 13 in a state where it is not exposed, and is also provided at a predetermined position on the outer surface thereof for retaining lock. The recess 17 is provided. At the bottom of the handle 2, a lock member 19 for restricting the retaining of the power cord 14 is provided. As shown in FIG. 3, the lock member 19 is assembled so as to surround the outer periphery of the plug receptacle 12 and is movable in the front-rear direction, and is always biased rearward by the spring member 20. On the front side of the inner surface of the lock member 19, there is provided a lock claw 21 having a taper 21a at the tip and having a chevron cross-section, and the lock claw 21 is projected into the opening 12a of the plug receptacle 12 and released to the rear outer surface of the lock member 19. The operation knob 22 is integrally provided so as to project, and the release operation knob 22 is projected from the opening 23 at the bottom of the handle 2 to the rear outer surface 2b.

Thus, as shown in FIG. 1, when the plug 15 of the power cord 14 is inserted into the plug receiving port 12, the tip of the plug 15 slides the taper 21 a at the tip of the lock claw 21, and the lock member 19 is temporarily moved. By pushing the spring member 20 forward against the force of the spring member 20, the plug 15 is completely inserted into the plug pin 13 at the time when the lock claw 21 is aligned with the recess 17, and at the same time, the lock claw 21 is thrust into the recess 17. The retaining state and the wobble preventing state can be maintained.

To pull out the power cord 14, as shown in FIG. 2, the release operation knob 22 is pushed against the force of the spring member 20 until the lock member 19 removes the lock claw 21 from the recess 17. Since it is pushed forward and the locked state is released by this, the power cord 14 can be pulled out.

At this time, when using this handheld hair dryer, the power cord 14 is inserted into the plug receptacle 12 as described above, and the index finger is usually placed on the front outer surface 2 a of the handle 2 on one side. The thumbs are used in a gripped state, but at this time, the power operation switch 9 can be turned on / off by pushing the switch operation knob 10 with an index finger and turning it. Since it is located on the rear outer surface 2b and below the switch operation knob 10, it is possible to prevent the release operation knob 22 from being erroneously operated by a finger on the front outer surface 2a having the switch operation knob 10.

In the above-described embodiment, the switch operation knob 10 is provided on the front outer surface 2a and the release operation knob 22 is provided on the rear outer surface 2b facing the switch operation knob 10 on the outer surface of the handle 2. However, instead of this, As shown in FIG. 4, the switch operation knob 10 is arranged on the front outer surface 2a of the handle 2, but the release operation knob 22 may be arranged on the bottom outer surface 2c adjacent to the plug receptacle 12.

At this time, a pin-shaped releasing operation knob 22 is provided adjacent to the plug receiving opening 12 on the bottom side outer surface 2 c of the handle 2 so as to be vertically retractable through the spring member 20, while the plug receiving opening 12 of the plug receiving opening 12 is provided. A lock member 19 is provided on the rear side wall so as to be retractable in the plug receiving port 12 in the front-rear direction, and a means for changing the moving direction between the release operation knob 22 and the lock member 19 is provided between the lock member 19 and the lock member 19. A pin 24 provided at the rear end portion is slidably engaged with and coupled to a release operation knob 22 in a cam groove 25 provided in an oblique direction intersecting the vertical direction. Other than this, as the direction changing means, various things such as a link mechanism and a screw can be applied. Thus, as shown in FIG. 4 (A), when the release operation knob 22 is pushed upward against the force of the spring member 20, the lock member 19 is withdrawn from the inside of the plug receiving port 12, and When the pushing operation to the release operation knob 22 is released as shown in B), the release operation knob 22 projects downward due to the restoring force of the spring member 20, and the lock member 19 projects into the plug receiving opening 12 and It is adapted to engage with the concave portion 17 of the plug 15 in 12 and maintain its locked state.

As described above, it is preferable that the release operation knob 22 is disposed on the bottom side outer surface 2c of the handle 2 because the contact with the hand holding the handle 2 can be more effectively avoided. Further, since the switch operation knob 10 is a slide type and the release operation knob 22 is a push type, the operation modes of the both are different, which is more advantageous in preventing erroneous operation of both. Further, since the pull-out direction of the power cord 14 and the release operation direction of the release operation knob 22 are opposite to each other, it is easy to pull out the power cord 14 while operating the release operation knob 22.

5 and 6 show another embodiment. In this embodiment, at the corner where the rear outer surface 2b of the handle 2 and the bottom outer surface 2c intersect, a release operation knob 22 as shown in FIG. As shown in FIG. 5 (A), the lock claw 21 provided on the release operation knob 22 releases the engagement with the recess 17 of the plug 15 and at a substantially right angle below the lock claw 21 of the release operation knob 22. The push-out arm 27 is integrally provided so that the plug 15 is forcibly pushed out from the plug receiving port 12. Generally, as the contact pressure between the plug pin 13 and the pin receiving terminal 16 is increased, the conduction stability is improved, but it becomes difficult to remove the plug 15 and it is easy to cause a disconnection accident when the power cord 14 is gripped and pulled out. Moreover, the power cord 14 can be easily pushed out, which is advantageous for female-oriented electric equipment.

7 and 8 show still another embodiment. In the above embodiment, the lock member 19 is provided on the plug receptacle 12 side, but in this embodiment, the lock member 19 having the lock claw 21 at the tip is provided on the plug 15 side of the power cord 14. That is, the lock member 19 is formed integrally with the plug 15 so as to be elastically deformable or is formed so as to be retractable by a coil or a plate-like member, while the recess 17 with which the lock claw 21 engages is formed in the plug receiving port. It is provided inside 12. In this case, it is important to provide the lock member 19 so that the lock member 19 is not elastically deformed by the finger gripping the plug 15 inserted in the plug receiving port 12. Therefore, as shown in FIG. 8, the groove 28 provided for sinking the lock member 19 on the outer surface of the plug 15 is made as narrow as possible, and the lock member 19 is flush with the outer surface of the plug 15 or slightly sinks. To be installed. Then, one end of an elastically deformable coil spring or plate spring 29 is fixed to the lower side of the rear outer surface 2b of the handle 2, and the release operation knob 22 attached to this other end resists the force of the plate spring 29. When the push operation is performed, the projection 22a provided on the release operation knob 22 presses and abuts the lock member 19, and the lock member 19 receives the press abutment action and is elastic so that the lock claw 21 is removed from the recess 17. It is deformed so that the plug 15 can be pulled out.

FIG. 9 shows still another embodiment, in which the switch operating knob 10 is attached to the front outer surface 2 a of the handle 2 and the plug 15 of the power cord 14 is inserted / removed in the rear outer surface 2 b of the handle 2. The plug receiving opening 12 is a push-type releasing operation for releasing the locked state of the plug 15 locked by the lock member 19 similar to the lock member 19 shown in FIG. 1 on the bottom outer surface 2c of the handle 2. Each knob 22 is provided. In addition to the hair dryer, the present invention can be applied to electric appliances such as electric razors, futon dryers, irons, electric kettles, and the like.

[0018]

[Effect of device]

 According to the present invention, the switch operation knob 10 and the release operation knob 22 are arranged on different surfaces on the outer surface of the electric device, respectively, so that it is easy to use the both knobs 10 and 22, and the both knobs 10 and 22 can be easily used. It is possible to effectively prevent erroneous confusion of the operation of 22, and it is possible to use the power cord 14 safely without being accidentally pulled out or wobbling during use.

[Brief description of drawings]

FIG. 1 is an overall side view showing a state in which a plug is inserted into a plug receptacle in a partially broken state.

FIG. 2 is a sectional view showing a state where a plug is pulled out from a plug receiving port.

3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 shows another embodiment, FIG. 4 (A) is a sectional view showing a state where a plug is pulled out from a plug receiving port, and FIG. 4 (B) is a state showing a plug being inserted into the plug receiving port. FIG.

FIG. 5 shows still another embodiment, FIG. 5 (A) is a sectional view showing a state in which the plug is being pulled out from the plug receiving port, and FIG. 5 (B) is a state in which the plug is inserted into the plug receiving port. FIG.

6 is a perspective view of a release operation knob of the embodiment shown in FIG.

FIG. 7 is a cross-sectional view showing still another embodiment with a plug inserted in a plug receptacle.

8 is a perspective view showing a state where the plug of the embodiment shown in FIG. 7 is pulled out from a plug receiving port.

FIG. 9 is a side view of the whole showing another embodiment.

[Explanation of symbols]

 1 Main body case 5 Load 10 Switch operation knob 14 Power cord 15 Plug 19 Lock member 22 Release operation knob

Claims (1)

[Scope of utility model registration request] 1. Electricity having a load 5, a switch operating knob 10 for opening and closing an energizing circuit for the load 5, and a plug receptacle 12 for inserting and removing a plug 15 of a power cord 14 for supplying power to the load 5. The device is provided with a lock member 19 for restricting the plug 15 from coming out of the plug receptacle 12 and a release operation knob 22 for canceling the removal restriction by the lock member 19, and the release operation knob 22 is provided on the outer surface of the electric device. An electric device, which is arranged on a surface different from the surface on which the switch operation knob 10 is arranged above.