JP3082680B2 - Retainer outlet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outlet, and more particularly, to an outlet having a configuration for preventing a plug from being easily removed.

[0002]

2. Description of the Related Art In a conventional outlet plug structure, a male electrode plate (plug terminal) of a plug is inserted between a female electrode plate (outlet terminal) of an outlet, and the male electrode plate is fixed by a force sandwiching the female electrode plate. Was something. However, such a configuration has a drawback that the male electrode plate easily comes off from the female electrode plate and easily comes off during use.

On the other hand, there has been proposed a configuration in which the force of the female electrode plate sandwiching the male electrode plate is increased to prevent the female electrode plate from coming off during use. Figure 4 shows a conventional outlet
It is a figure which shows the outlet which added the structure which increased the force which the female electrode plate pinches a male electrode plate in a plug.

As shown in FIGS. 1 (a) to 1 (c), in this configuration, a male electrode plate 8 is provided on the plug B side, and between the female electrode plate 2 of the outlet A. It is configured to be inserted into. The outlet A is provided with an outlet side wall 1. After the outlet A is inserted into the plug B, the wedge 4 is moved rightward, and the plug 3 is pressed downward by the slope 5 of the wedge 4, and the plug 3 is moved. The configuration is such that the female electrode plate 2 is pressed. The wedge 4 is provided with an elongated hole 6 so that the wedge 4 can be moved right and left by loosening the screw 7. When the wedge 4 is moved to a desired position, the screw 7 is tightened to fix the wedge 4.

FIG. 1 (a) is a view of an outlet viewed from the side, showing the appearance thereof. The outlet side wall 1 is provided with a lateral hole into which the wedge 4 enters, and the plug 3 is fitted in the lateral hole. When the screw 7 fitted in the elongated hole 6 is loosened and the wedge 4 is moved to the right, the plug 3 is pushed downward by the slope of the wedge. When the plug 3 is properly pushed in, the wedge 4 is fixed with the screw 7.

FIG. 1B is a plan sectional view of the outlet, in which the structure of the wedge 4 is more clearly shown. As is clear from FIG. 2B, when the plug 3 is pushed in, the female electrode 2 is pushed. This allows
The frictional force between the female electrode 2 and the male electrode 8 is increased to prevent the male electrode 8 from coming off.

FIG. 1C is a front view of the outlet.
It includes a partial cross-sectional view. As is apparent from FIG. 3C, the plug 3 is pressed by the wedge 4, and the plug 3 presses the female electrode 2 against the male electrode 8.

[0008]

However, in the case of the configuration shown in FIG. 4, an extra operation of moving the wedge 4 when releasing the connection between the outlet and the plug is required, and the configuration of the outlet becomes complicated. .

In another example, there has been proposed an arrangement in which a special fixing is provided to the outlet and the plug. However, in any case, there is a problem that the outlet or the plug itself is not versatile. ing.

Recently, it has been considered to provide an outlet other than a cigar socket for a vehicle. Such an outlet is considered to be useful when using an electric product, for example, a mobile phone or an electric shaver in the vehicle, but the mobile phone or the like is charged in the vehicle and gets off the vehicle. It is expected that the outlet will be removed and taken out every time. Therefore, it is considered that the number of times of plugging and unplugging of the outlet naturally increases, and the abrasion of the electrode terminal also increases.

Accordingly, an object of the present invention is to provide an outlet for preventing a plug from being unplugged, which has a simple structure of plugs and outlets, is versatile, and has a structure for suppressing terminal wear.

[0012]

According to the present invention, there is provided a socket for retaining a plug terminal in which an elastic roller for fixing the plug terminal is pressed from both sides on both sides of an insertion path of the plug terminal inside the outlet to prevent the plug terminal from being removed. Is performed.

The fixing (elastic) roller is provided so as to sandwich the plug terminal from both sides, and by pressing the plug terminal from both sides, the plug terminal is prevented from easily coming off. According to this, since the friction between the terminals is the same as the conventional one, the wear of the terminals is not accelerated. Alternatively, the contact pressure between the terminals can be made weaker than before, so that the wear of the terminals can be made slower. Therefore, the terminal is not worn easily due to long use, and the plug terminal does not easily come off. Therefore, it is not necessary to readjust the pressure applied to the outlet terminal. That is, when the plug terminal is inserted, in most cases, the fixing roller rotates, so that wear of the fixing roller can be prevented.
Also, when restricting the rotation of the fixing roller, if the plug terminal is configured to fit into the outlet terminal as long as the fixing roller can rotate freely, the fixing roller will also be worn out and readjustment You don't have to.

Further, since no new configuration is required on the plug side, the present invention is effective for any plug from a general outlet to a plug with an AC adapter.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a diagram showing the configuration of an embodiment of the outlet of the present invention. FIG. 1A is a diagram showing the appearance of the outlet and the plug. As shown in FIG. 1A, the outlet 10 and the plug 11 of the present invention have no difference in appearance from ordinary outlets and plugs. However, the outlet 10 is slightly larger than a normal one. The plug 11 may be a normal plug, and no special configuration is required. Therefore, the retaining plug 10 of the present invention can be used with the ordinary plug 11, so that it is very versatile.

FIG. 1B shows the inside of the retaining socket of the present invention. FIG. 2B shows a state where the plug 11 is inserted into the outlet 10.
Outlet terminal (female electrode plate) 1 inside outlet 10
2 are fixed by two outlet terminal fixing screws 16. A plug terminal 13 is fitted into the outlet terminal 12, and is configured to be clamped by the outlet terminal 12.

Further, the outlet 10 of the present invention is provided with a fixing roller 14 for pinching and fixing the plug terminal 13 and a roller detent 15. The fixing rollers 14 are provided on both sides of the plug terminal 13, and pinch the plug terminal 13 from both sides to fix the plug terminal 13 so that the plug terminal 13 does not come off. The fixing roller 14 rotates as the plug terminal 13 is inserted. The shape of the fixing roller 14 is, for example, an elliptical cross section. As the roller 14 rotates, the plug terminal 13 is sandwiched with a stronger force.

A fixing roller 14 having an elliptical cross section.
In the initial state, the plug terminal 13 is received in a state where the major axes of the ellipses are parallel to the direction in which the plug terminal 13 enters, and as the plug terminal 13 is inserted, the fixing roller 14 rotates, When the terminal 13 is inserted as far as possible, the direction of the major axis of the ellipse is the direction facing the fixing roller 14 of the other. That is, before the plug terminal 13 is inserted, the fixing rollers 14 each having an elliptical cross section have their short axis directions directed to each other.
The space between the two fixing rollers 14 is the widest state. The plug terminal 13 is inserted here.

In a state where the plug terminal 13 is inserted at the innermost position, the fixing roller 14 presses the protruding part (long axis direction) of the ellipse against the plug terminal 13, and the plug terminal 13 is fixed to the fixing roller 14. With this, it becomes strongly pinched from both sides. Thereby, plug terminal 1
3 is fixed, so that it is difficult to remove from the outlet 10.

A roller rotation stopper 15 is provided near the fixing roller 14, and serves to stop the rotation of the fixing roller 14 so that the fixing roller 14 does not rotate more than 90 degrees. The position where the roller rotation stopper 15 is provided is not particularly limited, but the major axis direction of the elliptical cross section is formed on the plug terminal 13 against the rotational force of the fixing roller 14 which rotates as the plug terminal 13 is inserted. It must be made strong enough to stop rotation when pressed.

When pulling out the plug terminal 13, the plug 11
The plug terminal 13 can be pulled out simply by pulling strongly. At this time, the fixing roller 14 also rotates, and the short axis direction of the ellipse is directed to the plug terminal 14. This allows
The path of the plug terminal 13 is wide open, and the plug terminal 1
3 can be easily removed. When the plug terminal 13 is pulled out, the roller rotation stopper 15 is
Also functions to prevent rotation so that the plug terminal 13 does not rotate too much.
Keep facing the side of. That is, by keeping the path of the plug terminal 13 as wide as possible, the plug terminal 13 can be easily pulled out.

As described above, the retaining outlet 1 of the present invention
0, the fixing roller 14 and the roller detent 1
Since the size of the outlet 10 is slightly increased in order to provide the socket 5 in the outlet 10, a versatile retaining outlet can be created without providing a special configuration for the outlet 10 and the plug 11. .

FIG. 2 illustrates the operation of the present invention more clearly. First, as shown on the left side of the figure, the plug terminal 13 is fixed to the fixing rollers 14-1 and 14-.
2 is inserted in the direction of arrow A. Fixing roller 14
-1, 14-2 are arrows B with the plug terminal 13 therebetween.
Around the central axis 20 in the direction of. Fixing roller 1
As 4-1 and 14-2 rotate, the protruding side is drawn between the plug terminal 13 and the central shaft 20. The fixing rollers 14-1 and 14-2 are made of an elastic material such as rubber or the like, and are treated so that the surface does not slip, or have irregularities or the like so that the surface does not slip. Therefore, as the shaft rotates in the direction of arrow B, the space between the central shaft 20 and the plug terminal 13 is deformed and crushed.

On the right side of the figure, the fixing rollers 14-1 and 14
2 shows a state in which the protruding side of -2 is crushed between the central shaft 20 and the plug terminal 13. In this manner, the protruding side is crushed, so that the plug terminal 13 is sandwiched between the fixing rollers 14-1 and 14-2 to strongly fix the plug terminal 13.

The fixing rollers 14-1 and 14-2 hit the roller rotation stoppers 15-1 and 15-2, respectively.
It cannot rotate. Therefore, even if the plug terminal 13 is pushed further in the direction of the arrow A, the fixing rollers 14-1 and 14-2 do not rotate and continue to abut on the plug terminal 13 on the protruding side. Press and hold 13. Therefore, when it is necessary to insert the plug terminal 13 further inward, the user needs to push the plug terminal 13 with a somewhat strong force.

In the initial state, one of the fixing rollers 14-1 has already protruded from the other fixing roller 14-1.
When turning in the direction of 2, the roller detent 15-
1, the fixing roller 14-1 is connected to the plug terminal 1
No rotation when 3 is inserted. On the other hand, the fixing roller 1
Since 4-2 can rotate, the plug terminal 13 can be firmly clamped finally in a state as shown on the left side of FIG.

In order to fix the inserted plug terminal 13 in this manner, the fixing roller 14-
It is necessary that the surfaces of 1, 14-2 do not slip on the surface of plug terminal 13. For this purpose, the fixing rollers 14-1 and 14
-2 is formed unevenly. For example, it is conceivable to provide warp-shaped protrusions on the surfaces of the fixing rollers 14-1 and 14-2, or to perform a special treatment on the surfaces to process them into a rough surface.

When the plug terminal 13 is pulled out, the state changes from the right state to the left state in FIG. When pulling out the plug terminal 13 fixed in the state on the right side of the figure, it is necessary to pull the plug with a little strong force, but if the plug terminal 13 is pulled out a little, the surface of the fixing rollers 14-1 and 14-2 can be pulled out. Is processed so that it does not slip, so it immediately rotates to the left state in the figure. In the state shown on the left side of FIG.
4-1 and 14-2 are roller stoppers 15-1 and 15-2.
Thus, the rotation of each of them is not excessively performed in the direction of arrow C. If the fixing rollers 14-1 and 14-2 rotate too much when the plug terminal 13 is pulled out, the fixing rollers 14-1 and 14-2 have an elliptical cross-sectional shape, so that the protrusions shown in FIG. The protruding portion on the opposite side sandwiches the plug terminal 13 from both sides, and attempts to fix the plug terminal 13 again with a strong force. To prevent this, the roller rotation stoppers 15-1 and 15-2 are fixed not only in the arrow B direction but also in the arrow C direction.
2 is arranged to serve to stop it from rotating too much.

Therefore, the roller rotation stoppers 15-1 and 15-
No. 2 stops rotation against the force of the fixing rollers 14-1 and 14-2 trying to rotate. In the figure, although the cross section is shown as a relatively small square shape, the roller detents 15-1, 15-
2, the roller detent 15-1 in FIG.
It is conceivable to form a wall-shaped partition having an end around 15-2.

FIG. 3 shows a modification of the configuration of the fixing roller. In FIG. 1A, the fixing rollers 30-1 and 30-3 are fixed.
The cross-sectional shape of 0-2 is not a complete ellipse, but has a configuration in which a part is cut out and a flat portion 31 is provided. When the plug terminal 13 is inserted, the fixing rollers 30-1 and 30-2 move to the flat portions 31 as shown on the left side of FIG.
Are in contact with the roller rotation stoppers 15-1 and 15-2, and they are facing sideways. In this state, the gap between the fixing rollers 30-1 and 30-2 is in the most opened state, and the plug terminal 13 is inserted therein. Then, the fixing rollers 30-1 and 30-2 rotate to pinch the plug terminal 13 from both sides.

As shown on the right side of FIG. 3A, when the plug terminal 13 is fully inserted, the fixing rollers 30-1 and 30-2 are located between the plug terminal 13 and the central shaft 20. And the fixing rollers 30-1 and 3
The plug terminal 13 is strongly pressed by the elasticity of 0-2. The roller rotation stoppers 15-1 and 15-2 are in contact with the flat portion 31 to support the fixing rollers 30-1 and 30-2 so as not to rotate any more. As a result, the plug terminal 13 is fixed and cannot be easily removed.

FIG. 2B shows a configuration in which the fixing roller is an eccentric roller. On the left side of FIG. 3B, the fixing rollers 32-1 and 32-2 are circular in cross section, but the center axis 20 is provided at a position deviated from the center of the circle. Therefore, one side of the center shaft 20 of the fixing rollers 32-1 and 32-2 has a small thickness, and the other has a large thickness. When the plug terminal 13 is inserted, the fixing roller 32-1
The reference numeral 32-2 indicates that the thicker one faces the direction in which the plug terminal 13 is inserted. As the plug terminal 13 is inserted, the plug terminal 13 rotates around the central axis 20 to strongly press the plug terminal 13.

FIG. 3 (b) shows the fixing roller 32-1 on the right.
32-2 shows a state where the plug terminal 13 is sandwiched. In this state, the fixing rollers 32-1 and 32-
2 is in contact with the plug terminal 13, and the fixing roller 32-between the plug terminal 13 and the central shaft 20.
1 and 32-2 are crushed to strongly press the plug terminal 13 and to prevent the rollers from rotating 15-1 and 15-2.
Presses the fixing rollers 32-1 and 32-2 so as not to rotate any more.

FIG. 3C is a view showing a configuration in which a roller guide which is a groove for guiding a fixing roller is provided. As shown in the upper part of FIG.
The cross-sectional shape of 34-2 is circular, and the center axes 20-1, 2
0-2 is provided at the center of the circle. Central axis 20-1,
20-2 is slidably fitted in the roller guides 33-1 and 33-2. Roller guide 33-
The widths of 1, 33-2 gradually become narrower as they go. First, the fixing rollers 34-1 and 34-2 come to the right ends of the roller guides 34-1 and 34-2, and the space between the fixing rollers 34-1 and 34-2 is the largest.
When the plug terminal 13 is inserted, the fixing roller 34-
1, 34-2 and the plug terminal 13 abut, and the plug terminal 1
As fixing roller 3 is inserted, fixing rollers 34-1 and 34
-2 is also guided by the roller guides 33-1 and 33-2, and moves to the left.

Since the width of the roller guides 33-1 and 33-2 decreases toward the left, the distance between the fixing rollers 34-1 and 34-2 also decreases, and the plug terminal 13
Will be pressed strongly.

The middle part of FIG. 3C shows the fixing roller 34.
-1 and 34-2 are roller guides 34-1 and 34, respectively.
2 shows a state at the left end. In this state, the space between the fixing rollers 34-1 and 34-2 is narrow, and the fixing rollers 34-1 and 34-2 are deformed due to their elasticity. Therefore, the fixing rollers 34-1 and 34-1
4-2 strongly sandwiches the plug terminal 13 from both sides. In this figure, the fixing rollers 34-1 and 34-2 come at the tip of the plug terminal 13, but the fixing rollers 34-1 and 34-2 move as the plug terminal 13 moves.
1, 34-2 move together.

The lower part of FIG. 3C shows a state in which the plug terminal 13 is further inserted from the state of the middle part of FIG. The fixing rollers 34-1 and 34-2 are roller guides 3
3-1 and 33-2 have reached the left ends, and the plug terminals 13
Is further pushed in, the fixing rollers 34-1 and 34-
2 rotates on the spot and sends the plug terminal 13 deeply while pinching it strongly from both sides. Thereby, plug terminal 1
3 is inserted between outlet terminals (not shown) at the ends of the fixing rollers 34-1 and 34-2.

When pulling out the plug terminal 13, first,
The fixing rollers 34-1 and 34-2 move rightward and come to the right ends of the roller guides 33-1 and 33-2, respectively.
Accordingly, the force by which the fixing rollers 34-1 and 34-2 sandwich the plug terminal 13 is weakened, and the force for fixing the plug terminal 13 is weakened, so that the plug terminal 13 can be pulled out with a relatively weak force.

In the above description, only a limited number of configurations are shown as examples of the configuration of the fixing roller. However, the configuration is made of elastic rollers. Any configuration may be used as long as it is configured so as to be strongly sandwiched from the outside.

Although the outlet terminal has been described assuming that it is used for a general outlet, in the present invention, since the plug terminal is fixed by the fixing roller, the force with which the outlet terminal sandwiches the plug terminal is obtained. May be small. Alternatively, the outlet terminal may have a configuration in which only one of the plug terminals contacts.

[0041]

As a method for preventing the plug from coming off, the plug terminal is mainly pressed against the fixing roller, so that the contact pressure between the outlet terminal and the plug terminal can be reduced. The wear of the plug terminal is small, and the adjustment of the contact pressure becomes unnecessary.

Since the fixing method depends only on the internal configuration of the outlet, the plug and the outlet do not need to have a special pair of structures, and can be used for general plugs and have versatility.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of an outlet of the present invention.

FIG. 2 illustrates the operation of the present invention more clearly.

FIG. 3 is a modified example of the configuration of the fixing roller.

FIG. 4 is a diagram showing an outlet to which a configuration in which a force of a female electrode plate sandwiching a male electrode plate is added to a conventional outlet plug is added.

[Explanation of symbols]

Reference Signs List 10 outlet 11 plug 12 outlet terminal (female electrode plate) 13 plug terminal (male electrode plate) 14, 14-1, 14-2, 30-1, 30-2, 32
-1, 32-2, 34-1, 34-2 Fixing roller 15, 15-1, 15-2 Roller detent 16 Outlet terminal fixing screw 20, 20-1, 20-2 Central axis 31 Flat part 33- 1, 33-2 Roller guide

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 13/56-13/72 H01R 13/502

Claims (7)

(57) [Claims] 1. A retainer for preventing a plug from being easily removed from a state where the plug is inserted into the outlet, comprising:
A retaining outlet comprising a fixing elastic roller for pressing the plug terminal from both sides as the plug terminal is inserted, thereby preventing the plug terminal from falling off. 2. The retaining outlet according to claim 1, wherein the fixing elastic roller has an elliptical cross section. 3. The retaining outlet according to claim 1, wherein a cross-sectional shape of the fixing elastic roller is a shape in which an elliptical shape is partially cut away. 4. The fixing elastic roller according to claim 1, wherein the cross-sectional shape of the elastic roller is circular, and a center axis for fixing the fixing roller is displaced from a center position of the circular cross section.
Retainer outlet described in. 5. A fixing device according to claim 1, further comprising a roller detent means for restricting the fixing elastic roller from rotating more than necessary near the fixing elastic roller. The retaining outlet according to any one of the above. 6. A roller guide means provided on the left and right of the path in which the plug terminal is inserted, and a roller guide means which becomes narrower between the left and right as the plug terminal goes in the insertion direction, is provided. Is fixed by a central axis, the central axis is slidably fitted in the roller guide means, and the elastic roller for fixing moves along the roller guide means as the plug terminal is inserted,
2. The retaining outlet according to claim 1, wherein the plug terminals are pressed from both sides by gradually reducing the width between the fixing elastic rollers. 3. 7. The surface of the fixing elastic roller has at least a surface that is in contact with the plug terminal subjected to a process for smoothing or a structure for smoothing is provided. 7. The method according to claim 1, wherein:
One of the retaining outlets listed.