JPS63133471A - Electric appliance connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a connector for electrical appliances that connects an electrical appliance and a power cord.

(Prior art) Figure 4 shows the configuration of a conventional electrical appliance connector.
1 is a plug with two parallel insertion holes 2 formed from the front end to the rear end and one cord extraction hole 3 at the rear end; 4 is a plug with contacts 6 and 7 integrated at both ends of a spring 5, respectively; The movable electrode 4 is connected to the plug so that one contact 6 is fixed in the middle of the insertion hole 2 and the other free end contact 7 is located at the front end of the insertion hole 2. 1
It's decorated. 8 is the plug 1 between the two insertion holes 2
9 is a power cord whose one end is connected to the contact 6 of the movable electrode 4; 10 is a power cord with two rod-shaped fixed electrodes 11 buried in parallel with both ends protruding; A plug receptacle with an iron piece 12 buried between two fixed electrodes 11, 13 is a power introduction part of an electric appliance (not shown) with a plug hole 14, and in the deep part of the plug hole 14,
The plug receiver 1 is placed in a position such that at least the rear end of the plug 1 inserted into the plug hole 14 protrudes from the plug hole 14.
0 is fixed. Reference numeral 15 denotes a lead wire of an electric appliance whose one end is connected to the rear end of the fixed electrode 11.

In the conventional example configured in this way, when the plug 1 is inserted into the plug hole 14, the fixed electrode 11 inserted into the insertion hole 2 and the contact point 7 are pressed together by the tension force of the spring 5, and the power cord 9 and the lead wire 15 are connected, the magnet 8 is attracted to the iron piece 12, and the plug 1 is fixed to the plug receiver 10.

Also, when removing the plug 1 from the plug receiver 10,
The rear end of the plug 1 protruding from the plug hole 14 may be grasped by hand, and the plug 1 may be pulled out from the plug hole 14 against the attraction force of the magnet 8.

(Problems to be Solved by the Invention) By the way, when the plug 1 is fixed to the plug receiver 10, the stretching force of the spring 5 of the movable electrode 4 will cause the plug 1 to separate from the plug receiver 10 between the contact point 6 and the fixed electrode 11. The coupling force between the plug 1 and the plug receiver 10 is weakened. Therefore, even if a slight force is applied to the plug 1, there is a problem that the plug 1 easily comes off from the plug receiver 10.In addition, in order to solve this problem, the extension force of the spring 5 of the movable electrode 4 is increased. If it is made relatively weak, there is a problem that poor contact occurs between the contact 7 and the fixed electrode 11. This problem is particularly important for devices that are constantly connected to a power source, such as electrical appliances with a built-in microcomputer. There were two important things to keep in mind.

Furthermore, a plug hole 14 is provided in order to attach and detach the plug 1 by hand.
There was a problem in that the plug 1 protruding from the plug 1 got in the way.

The present invention has been made in view of these problems, and allows the contact pressure between the movable electrode and the fixed electrode to be set arbitrarily, and
To provide a connector for electrical appliances in which a plug does not come off carelessly from a plug receiver and the plug connected to the electrical appliance does not get in the way.

(Means for Solving the Problems) The present invention is characterized in that the entire plug is inserted into a plug hole formed in a power introduction part of an electric appliance, and a plug with a movable electrode in pressure contact with a fixed electrode is locked in the plug hole. The plug includes a stopper means and an elastic member that causes the plug to protrude or separate from the plug hole when the engagement between the stopper means and the plug is released.

(Function) The plug that is inserted into the plug hole and brings the movable electrode into pressure contact with the fixed electrode is locked in the plug hole by the stopper means, so the contact pressure between the movable electrode and the fixed electrode can be set arbitrarily. If the cord or the like gets caught on your foot, etc.
It is possible to prevent the plug from accidentally coming off from the plug receiver. Furthermore, when the plug is connected to the plug receiver, the entire plug is inserted into the plug hole, and when the plug is removed from the plug receiver, the engagement between the plug and the stopper means is released. Since the plug is pushed out of the plug hole by the elastic member, the appearance of the electric appliance is neat and the plug connected to the electric appliance does not get in the way.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a configuration in which a plug and a plug receiver are separated in an embodiment of the present invention, and FIG. 2 shows a state in which a plug and a plug receiver are connected in an embodiment of the present invention. FIG. 3 shows an electric appliance equipped with an embodiment of the present invention, in which two insertion holes 22 are formed in parallel from the front end to the rear end.
Plug 24 with one cord extraction hole 23 formed at the rear end
is a movable electrode in which contacts 26 and 27 are integrally provided at both ends of a spring 25, and one of the contacts 26 of this movable electrode 24 is fixed in the middle of the insertion hole 22, and the contact 27 at the other free end is fixed to the middle of the insertion hole 22. is installed inside the plug 21 so as to be located at the front end of the insertion hole 22. 28 is an engagement hole formed in the side wall of the rear end of the plug 21, 29 is a power cord whose one end is connected to the contact 26 of the movable electrode 24, and 30 is two rod-shaped fixed electrodes with both ends protruding. 31 is a plug receptacle buried in parallel, and 32 is an electric appliance with a plug hole 33, for example, a power supply inlet at the corner of an electric carpet 34 (see Figure 3). hole 33
A plug receiver 30 is fixed at a position such that the entire plug 21 inserted into the plug hole 33 is completely accommodated in the plug hole 33. 35 has one end connected to the rear end of the fixed electrode 31 and the other end connected to a heating element 36 (
3), a guide hole 37 is provided next to the plug hole 33 so that its center line is perpendicular to the center line of the plug hole 33, and 38 is a lead wire connected to the guide hole 37 so that it communicates with the outside. A lever hole drilled in the wall of the power introduction part 32, 3
9 is a stopper movably housed in the guide hole 37;
The distal end surface of the stopper 39 is inclined so that a claw portion 39a on the back side (lower side in the figure) of the stopper 39 projects into the plug hole 33. Reference numeral 40 denotes a release lever integrally protruding from the wall surface of the stopper 39, and this release lever 40 is inserted into the lever hole 38.
It is penetrated by. Reference numeral 41 denotes a spring interposed between the wall surface of the guide hole 37 and the stopper 39. The extension force of this spring 41 urges the stopper 39 in the direction of the plug hole 33 (rightward in the figure), and the claw portion 39a is projected into the plug hole 33 at all times. A spring 42 has one end fixed to the plug receiver 30 so as to be located between the two fixed electrodes 31.

In this embodiment configured as described above, the plug 21 is manually pushed into the plug hole 33 of the power introduction part 32, and the stopper 39 whose claw part 39a is in contact with the plug 21 is moved by the spring 41.
against the stretching force of the guide hole 37 (towards the left in the figure)
When the plug 21 is moved further into the plug hole 33, the spring 4 is attached to the front end surface of the plug 21.
Then, the free end of the fixed electrode 31 contacts the contact 27 of the movable electrode 24 .

Therefore, the plug 21 is moved into the plug hole 3 by resisting the stretching force generated in the spring 42 and the spring 25 of the movable electrode 24, respectively.
3 and the entire plug 21 is completely accommodated in the plug hole 33, the claw portion 39a of the stopper 39, which was biased toward the plug 21 by the spring 41,
enters and engages the engagement hole 28 of the plug 21, and the plug 2
1 is locked in the plug hole 33 in the state shown in FIG. Therefore, the connection state between the contact point 27 of the movable electrode 24 and the fixed electrode 31 is maintained by the stretching force of the spring 25 of the movable electrode 24, and the connection state between the power cord 29 and the lead wire 35 is maintained.

Also, if you move the release lever 40 to the left in the figure by hand,
The stopper 39 moves toward the back of the guide hole 37 (to the left in the figure), and the engagement state between the engagement hole 28 and the claw portion 39a of the stopper 39 is released, and the spring 42 and the spring 25 of the movable electrode 24 The plug 21 is automatically pushed out from the plug hole 33 by the stretching force (see FIG. 1).

The stroke of the spring 42 is made larger than the stroke of the spring 25 of the movable electrode 24, that is, the stroke of the spring 42 is made larger than the stroke of the spring 25 of the movable electrode 24. The displacement is determined by the movable electrode 24
After the contact 27 and the fixed electrode 31 come into contact with each other, the plug 21
The movable electrode 2 until the connection with the plug receiver 30 is completed.
By making the displacement larger than 4, it is possible to avoid contact between the movable electrode 24 and the fixed electrode 31 when the connection between the plug 21 and the plug receiver 30 is incomplete.

In addition, in the detailed description of the present invention, an example has been described in which the movable electrode 24 is provided on the plug 21 and the fixed electrode 31 is provided on the plug receiver 30. Each may be provided.

(Effects of the Invention) As explained above, according to the present invention, when the plug is pushed into the plug hole, the stopper means and the plug engage with each other.
Since the plug is locked in the plug hole with the movable electrode and the fixed electrode in pressure contact, the contact pressure between the movable electrode and the fixed electrode can be set as desired, and it is also possible to set the contact pressure between the movable electrode and the fixed electrode as desired. This has the effect of preventing the plug from accidentally coming off the plug receiver even in such situations.

Furthermore, when the plug is connected to the plug receiver, the entire plug is accommodated in the plug hole, and when the plug is removed from the plug receiver, the plug is inserted into the plug hole simply by releasing the engagement state between the plug and the stopper means. Since the plug is pushed out by the stretching force of the elastic member, the plug connected to the electrical appliance does not get in the way, and it becomes easier to remove the plug from the plug holder, which also has the effect of giving the electrical appliance a cleaner appearance. .

Furthermore, when the plug is connected to the plug receiver, the plug is constantly pressed against the stopper means by the stretching force of the elastic member, eliminating any wobbling of the plug, which has the effect of stabilizing the contact state between the movable electrode and the fixed electrode. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a configuration in which a plug and a plug receiver are separated in an embodiment of the present invention, and FIG. 2 is a sectional view showing a configuration in which a plug and a plug receiver are connected in an embodiment of the present invention. FIG. 3 is a perspective view of an electric appliance equipped with an embodiment of the present invention, and FIG. 4 is a cross-sectional view showing the configuration of a conventional electric appliance connector. 21... Plug, 24... Movable electrode, 28... Engagement hole, 29... Power cord, 30... Plug receiver,
31...Fixed electrode, 32...Power introduction part, 33...
・Plug hole, 37...Guide hole. 39...stopper, 41.42...spring. Patent Applicant: Matsushita Electric Industrial Co., Ltd. Figure 1 21 Flag 24--1 Driving Tunnel 28 Diagram 2 Figure 3 ≦ Figure 4

Claims (3)

[Claims] (1) A movable electrode that is biased in a predetermined direction by an elastic member is installed internally, or a plug with a fixed electrode protruding from the plug is fixed deep inside a plug hole made in the power introduction part of the electrical appliance. and a plug receiver having a fixed electrode protruding therein or a movable electrode internally biased in a predetermined direction by an elastic member, and a plug receiver inserted into the plug hole to connect the fixed electrode and the movable electrode. The plug is characterized by comprising a stopper means for locking the pressed plug in the plug hole, and an elastic member for pushing the plug out of the plug hole when the engagement between the stopper means and the plug is released. Connectors for electrical appliances. (2) The plug receiver is provided at a position such that the plug inserted into the plug hole is completely accommodated in the plug hole.
Connectors for electrical appliances listed in ). (3) The electrical appliance connector according to claim (1), wherein the elastic member has a stroke larger than the stroke of the movable electrode.