JPH0617142U - electrical plug - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a compact power plug with excellent durability. [Structure] Two independent through holes 24a, 24 in the plug body 23
b is provided, the conductors 27a and 27b are crossed from the front and back sides, and the conductors 27a and 27b are inserted into the grooves 28a and 28b.
The conductor tips are connected to the plug blades 22 by terminal screws 25a and 25b, and then a plug cover 29 is attached to the plug body 23. Here, even if tension is applied to the power supply wire 26, the through hole 24
Conductive wires 27a and 27b intersect with each other via a and 24b, respectively, and the grooves 28a and 28b of the plug body 23 and the conductive wires 27a and 27b.
By the frictional resistance of b, the conductor connecting portion 21 can be held without applying tension, and the bent portions of the conductors 27a and 27b are also protected by the plug cover 29, so that repeated bending unlike the conventional case does not occur.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power plug such as an electric scavenger having a blade for connecting conductor tips of conductors of a power wire.

[0002]

[Prior art]

 Generally, a cabtire cord is used for a power supply wire of an electric vacuum cleaner, and a plug portion is integrally formed. As the vacuum cleaner moves during cleaning, the plug may be disconnected due to bending and other loads on the plug. When the power supply line is broken in this way, repairs such as replacing the power supply line itself or replacing a commercially available power supply plug are made. This power plug fixes the wire to the body so that no load is applied to the conductor connection.

Hereinafter, a conventional power plug will be described with reference to the drawings. 4A is a configuration diagram of a main part of a conventional power plug, and B is a vertical cross-sectional view of the conventional power plug. In FIGS. 4A and 4B, the main bodies 1a and 1b made of plastic are divided into two parts, and the conductor portion 4 of the lead wire 3 of the cabtire cord 2 is attached to the blade 5 and the terminal screw 6 when the power wire is attached. Then, the blade 5 and the conductor 3 are mounted in the main bodies 1a and 1b. The main body 1a, 1b divided into two is covered and tightened with a screw 7, the ribs 8a, 8b protruding at the conductor guide openings of the main body 1a, 1b sandwich the conductor 3 and tension is applied to the connecting portion by the terminal screw 6. It is fixed not to join. The power plug 9 is configured as described above.

FIG. 5 is an irregular vertical sectional view of a conventional power plug showing another example. In FIG. 5, the power plug 11 is made of rubber, vinyl chloride, or the like, and includes a plug body 14 having a blade 12 and a terminal screw 13, and a plug cover 15 that covers and fixes the plug body 14. . When installing the power supply wire, the cabtire cord 16 is inserted into the plug body 14 to connect the conductors, and the cabtire cord 16 and the plug body 14 are fixed by the ring 17.

[0005]

[Problems to be solved by the device]

 However, in the above-described conventional configuration of the power plug 9, since the outer cover of the cabtire cord 2 is removed and the conductor wire 3 which is the electric wire portion is pressure-contacted and held by the ribs 8a and 8b, the electric wire is not bent by a load such as bending. A wire breakage easily occurs in the holding portion. In addition, in the above-mentioned conventional rubber plug of the power plug 11, since the cord is fixed to the plug body 14 and held by the ring 17, the plug itself becomes large and it pops out from the vacuum cleaner body when the cleaner is stored. There was a problem such as scratching the floor surface at 12.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a small-sized power plug having excellent durability.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the power plug of the present invention is a power plug having a plug body having conductor connecting portions for connecting the conductor tips of one conductor wire and the other conductor wire of the power conductor to the blade. And two independent through holes are provided in the plug body, and a groove for holding the conductor is provided on the front surface side and the back surface side of the through hole from the end surface of the through hole to the conductor connecting portion, respectively. One of the power supply wires and the other of the power supply wires are passed through through holes, respectively, and then held in the groove to connect the tip of each conductor to the conductor connecting portion.

Further, the power plug of the present invention is a power plug having a plug body having conductor connecting portions for connecting the conductor tips of one conductor wire and the other conductor wire of a power supply wire to a blade, respectively. On the front surface side and the back surface side of the plug body, independent grooves capable of holding a conductive wire are provided respectively in the inverted V shape, and one conductor wire of the power supply wire and the other conductive wire are respectively provided in the inverted V shape groove. The structure is such that it is held and the tip of each conductor is connected to the conductor connecting portion, respectively.

Further, in addition to the above structure, the power plug of the present invention has a plurality of slanted ribs on the inner surface of the protector portion of the power cord provided in the plug cover that protects the plug body and its charging portion. The power supply cord is provided integrally with the protector portion, and the protector portion covers the power cord.

[0010]

[Action]

 With the above configuration, even if tension is applied to the power supply wire by connecting the conductors by crossing and connecting the conductors in the groove, the tension is received by the through hole and the friction resistance between the groove and conductor of the plug body causes Since the frictional resistance between the groove and the conductor wire is received by the corner portion of the groove formed in the inverted V shape, the stress on the conductor connecting portion is suppressed, so that the holding force of the conductor connecting portion can be secured, and As described above, there is no need to pinch and fix the electric wire part or fix the cord to the plug body with a ring, etc., resulting in a compact and durable power plug. Moreover, since a plurality of ribs are provided on the inner surface of the protector portion in a slanted manner, it is possible to cope with different thicknesses of the cord.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an irregular vertical sectional view of a power plug according to a first embodiment of the present invention. In FIG. 1, two independent through holes 24a and 24b are provided in the plug main body 23 having the conductor connecting portion 21 and the blade 22, and the conductors are connected from the front surface and the back surface from the end surfaces of the through holes 24a and 24b. Grooves 28a, 28b are provided up to the terminal screws 25a, 25b as the connecting portion 21, in which the conductors 27a, 27b of the power supply wire 26 (in this case, the positive pole 27a and the negative pole 27b) can be installed. The positive pole conductor wire 27a is inserted into the through hole 24a from the back surface side, is inserted into the groove 28a on the front surface side formed from the end surface of the through hole 24a, and is connected to the blade 22 with the terminal screw 25a. The negative pole lead wire 27b is inserted into the through hole 24b from the front surface side, is inserted into the rear surface side groove 28b formed from the end surface of the through hole 24b, and is connected to the blade 22 with the terminal screw 25b. Further, a protector 29a for protection at the time of bending is integrally provided in the lower portion of the plug cover 29, and the plug cover 29 is provided in the concave portion 23a provided on the outer periphery of the upper end portion of the plug body 23 after connecting the conductors. The convex portion 29b provided on the inner circumference of the upper end of the plug body 23 is fitted to protect the charging portion of the plug body 23.

With the above structure, even if tension is applied to the power supply wire 26, the conductors 27a and 27b cross each other through the through holes 24a and 24b, and the grooves 28a and 28b of the plug body 23 and the conductors 27a and 27b, respectively. Due to the frictional resistance of 27b, the conductor connecting portion 21 can be held without being applied with tension. Further, the bent portions of the conductors 27a and 27b near the through holes 24a and 24b are also protected by the plug cover 29, so that repeated bending as in the conventional case does not occur and the durability is excellent.

FIG. 2 is an irregular vertical sectional view of a power plug according to a second embodiment of the present invention. In FIG. 2, the plug body 31 is provided with grooves 34a, 34b on the front surface and the back surface thereof, into which the conductors 33a, 33b of the power supply wire 32 (in this case, the positive pole 33a and the negative pole 33b) can be installed. The positive pole conductor wire 33a is inserted into the groove 34a on the front surface side, and the tip of the conductor is connected to the blade 37 by the terminal screw 35a. Further, the negative pole lead wire 33b is inserted into the groove 34b on the rear surface side, and the tip end of the conductor is connected to the blade 37 by the terminal screw 35b. Furthermore, the protector 36a for protection at the time of bending is integrally provided on the lower portion of the plug cover 36, and the recess 31a provided on the outer periphery of the upper end of the plug body 31 after connecting the conductors is provided with the plug cover 36a. The convex portion 36b provided on the inner circumference of the upper end of the plug body 31 is fitted to protect the charging portion such as the conductor connecting portion 38 of the plug body 31.

With the above configuration, the tension applied to the power supply wire 32 can be reduced by providing the independent V-shaped grooves 34a and 34b capable of having the conductors 33a and 33b on the front surface side and the back surface side of the plug body 31, respectively. It is reduced by the frictional resistance between the conductors 33a, 33b and the grooves 34a, 34b, and is received by the inverted V-shaped corners of the grooves 34a, 34b. Even if tension is applied to the power supply wire 32, the terminal screws 35a, It can be held without applying tension to the conductor connecting portion 38 made of 35b.

FIG. 3 is a D-D ′ cross-sectional view of the protector portion in the power plug of FIG. 2. In FIG. 3, a plurality of ribs 36c are provided on the inner surface of a protector 36a formed integrally with the plug cover 36 while being inclined. Also, since the power supply wire 32 has a different cord thickness depending on the current value, the rib 36c can be collapsed and the power supply wire 32 can be inserted when it is attached to a thick cord, thus expanding the range of use of the power supply wire 32. It can be done.

[0016]

[Effect of device]

 As described above, according to the present invention, it is possible to obtain a small-sized and highly durable power plug, and in the past, for repairing a disconnection of a power supply wire, an integrally molded power plug was replaced, but it is inexpensive. It can be easily repaired. Also, since a plurality of ribs are provided on the inner surface of the protector in a slanted manner, it is possible to cope with different cord thicknesses and expand the range of use.

[Brief description of drawings]

FIG. 1 is an irregular vertical sectional view of a power plug according to a first embodiment of the present invention.

FIG. 2 is an irregular vertical sectional view of a power plug according to a second embodiment of the present invention.

FIG. 3 is a protector D in the power plug of FIG.
-D 'cross section

FIG. 4A is a configuration diagram of a main part of a conventional power plug, and B is a vertical sectional view of the conventional power plug.

FIG. 5 is an irregular vertical sectional view of a conventional power plug showing another example.

[Explanation of symbols]

 21, 38 Conductor connection part 22, 37 Plug blade 23, 31 Plug body 24a, 24b Through hole 25a, 25b, 35a, 35b Terminal screw 26, 32 Power supply wire 27a, 27b, 33a, 33b Conductor wire 28a, 28b, 34a, 34b Groove 29, 36 Plug cover 29a, 36a Protector 36c Rib

Claims (3)

[Scope of utility model registration request] 1. A power plug comprising a plug body having conductor connecting portions for respectively connecting conductor tips of one conductor wire and the other conductor wire of a power supply wire to a blade, wherein the plug body has two independent plugs. And a groove for holding the conductive wire is provided on each of the front surface side and the rear surface side of the through hole from the end surface of the through hole to the conductor connecting portion. A power plug configured to pass through the through holes so as to intersect with each other and then be held in the groove to connect the tips of the conductors to the conductor connecting portions, respectively. 2. A power plug comprising a plug body having conductor connecting portions for connecting the conductor tips of one conductor wire and the other conductor wire of a power supply wire to a blade, the front surface side and the back surface of the plug body. Independent grooves for carrying conductors are provided on the opposite side in a reverse V shape, respectively, and one conductor wire and the other conductor wire of the power supply wire are respectively provided in the grooves formed in the reverse V shape, and the tip of each conductor is provided. A power plug configured to connect the conductors to the conductor connection portions, respectively. 3. An inner surface of a protector portion of a power cord provided on a plug cover for protecting the plug body and a charging portion thereof,
The power plug according to claim 1 or 2, wherein a rib having a plurality of slopes is provided integrally with the protector portion, and the protector portion covers the power cord.