JP3074681U - plug - Google Patents

Abstract

(57) [PROBLEMS] To provide a plug having a power supply terminal and a ground terminal so that the ground terminal can be housed in a casing according to the shape of the outlet. A plug includes a power terminal 30 and a ground terminal 6.
Has zero. A ground terminal mount 40 for mounting the ground terminal 60 and a mount 20 for incorporating the ground terminal mount 40 are provided inside the casing 10 of the plug.
The ground terminal 60 can be reversibly mounted on the holding portion 40, and a user can select and set a position to be housed inside the casing and a position to be protruded outside the casing to be usable. In the storage position of the ground terminal 60, the ground terminal 20 is stored in the ground terminal storage section 21 of the mounting base 20.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an improved structure of a plug.

[0002]

[Prior art]

 As is well known, there are many types of plugs at present. Some plugs have only an electrode body (power supply terminal), and some have an earth body (earth terminal) in addition to the electrode body in order to respond to various types of current. There are plugs. Unfortunately, plugs that add a grounding element have various drawbacks in practical use and must be improved, as described below.

FIGS. 6 to 8 are diagrams for explaining a configuration example of a conventional plug. As shown in FIGS. 6 and 7, a plug 70 having a ground terminal 71 is additionally provided with a ground terminal 71 to which a ground wire is connected in order to achieve the purpose of safety, in addition to the structure of the electrode terminal 72. However, since the electrode terminal 72 and the ground terminal 71 are fastened inside the plug 70, their effective storage and replacement cannot be performed at any time. In order to effectively use an outlet having two outlets, the adapter 80 is directly attached to the plug 70 as shown in FIG. 7 or the ground terminal 71 of the plug 70 is connected as shown in FIG. Although it is necessary to cut it, such a method of use has the following disadvantages.

(1) Disconnection of Ground Terminal 71 Generally speaking, a plug for an electric appliance with a larger current is provided with a ground wire, and the ground terminal 71 is provided outside. However, a general outlet has only two insertion holes for inserting the two electrode terminals 72, and has a structure without the third insertion hole. To do so, the ground terminal 71 must be cut. However, when the ground terminal 71 is cut, not only a hard-to-see trace remains at the cut portion, but also when the three outlets are used, the ground terminal 71 is cut off. The problem that the property cannot be obtained arises.

(2) Addition of Adapter 80 In addition to the destruction method of cutting the ground terminal 71 as described above, an adapter 80 as shown in FIG. 7 may be attached to a plug. The adapter 80 has an insertion port into which the electrode terminal 72 and the ground terminal 71 of the plug 70 are inserted. When the plug 70 is mounted on the adapter 80, only two electrode terminals 81 appear outside, so that two general electrode terminals 81 appear. It can also be applied to outlets at the outlet. However, mounting the adapter 80 on the plug 70 increases the volume and height of the plug 70, which makes it easier for objects to hit this part or to receive external stress. The problem is that there is a high risk of injury, and in the worst case, there is a potential danger of injury. In addition, it is wasteful for the user to go out to purchase the adapter 80 and search for a store, in terms of time and physical strength, and it is necessary to purchase the adapter 80 at high cost.

Further, since the conventional general plug 70 as described above has a structure in which the entirety is integrated by injection molding of plastic, even if the internal wire is broken, it cannot be replaced. Therefore, some companies provide plugs of the assembly type. Generally, safety is not obtained in the assembly type plug structure because no earth terminal and earth wire are installed. In addition, it can be understood that such an assembly type structure is an inconvenient process because the electrode terminal and the casing cannot be tightened.

[0007]

[Problems to be solved by the invention]

 In view of the above situation, the present inventor has developed an improved structure of a plug that effectively solves various problems caused by the ground terminal of the plug. That is, the main purpose of the present invention is to propose an improved structure of the plug. According to the overall structure of the plug of the present invention, it is possible to provide a high-efficiency assembly form in which each electrode terminal and the ground terminal are securely fastened to the mounting base after the wires are connected.

[0008]

[Means for Solving the Problems]

 The invention of claim 1 is a plug having a power terminal and a ground terminal, the plug having a ground terminal mounting base to which the ground terminal is mounted and which is disposed inside a casing of the plug. The ground terminal mounting base is mounted so that a storage position where the ground terminal is stored in a casing and a protruding position protruding from the casing can be selectively set. is there.

According to a second aspect of the present invention, in the first aspect of the present invention, there is provided a mounting base in which the ground terminal mounting base is incorporated at a predetermined position, wherein the mounting base has the ground terminal mounted in the storage position. A housing for accommodating the ground terminal when the ground terminal is mounted, and the ground terminal mounting base is disposed in the casing with the base mounted on the mounting base.

According to a third aspect of the present invention, in the second aspect of the present invention, the ground terminal mount includes a ground terminal holding portion that fits along an inner wall of the housing portion, and a plate connected to the ground terminal holding portion. The plate-shaped conductive member is configured to extend from the ground terminal holding portion, bend at a bent portion, and then bend and bend at the tip end thereof. When the ground terminal mounting base is incorporated into the mounting base, the overlapped portion penetrates a predetermined through hole provided in the mounting base, and a tip end of the stacked configuration. A fastening portion that is fastened by a fastener to a predetermined engagement piece provided on the mounting base in the vicinity, and further includes the plate-shaped conductive member between the electrode holding portion and the bent portion; A predetermined convex locking body of the mounting base. Is provided with a hole for locking.

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the ground terminal is formed in a rod shape having a thread near one end. The holding portion is provided with a thread for screwing the thread of the ground terminal.

[0012]

[Embodiment of the invention]

 The plug of the present invention has a casing and a mounting base provided inside the casing. The mounting base is provided with an electrode terminal through which positive and negative currents flow and an earth terminal through which an earth wire is connected. In the present invention, a ground terminal mounting base is added to the mounting base. The user can choose between using and storing the ground terminal depending on the different outlet shapes, which not only improves the convenience of using the plug, but also replaces, repairs, or ties the electrical wires. In this case, the work of fastening the wire to the predetermined portion inside the plug only needs to be performed once, so that the work can be performed with high convenience and quickly.

As described above, the plug of the present invention mainly has a casing, a mounting base, an electrode terminal, a ground terminal mounting base, a fastener, a ground terminal, and the like. An earth terminal to which an earth wire is connected is attached to the earth terminal mounting base, and the earth terminal can be used or housed in a casing according to different outlet shapes, so that convenience and practicality are improved. Can be improved.

Hereinafter, specific embodiments will be described in detail with reference to the accompanying drawings so that the objects, features, effects, and the like of the present invention can be understood. As shown in FIGS. 1 to 5, the plug of the present invention includes a casing 10, a mounting base 20, an electrode terminal 30, a fastener 50, and a ground terminal 60. According to the plug of the present invention, not only can the ground terminal 60 be used effectively, but also the mounting state of the ground terminal 60 on the ground terminal mounting base 40 can be changed at any time.

The casing 10 has a hollow bell shape and has two large and small openings. A wire opening side end 11 is provided on the small opening side, and a restraining portion 17 for collecting and restraining the wire inside the narrow through tube is provided inside the wire introducing side end portion 11. On the other hand, on the large opening side, there is a mounting base installation side end 12, and near the inside of the mounting base installation side end 12, an annular groove 13 is provided.

An external connection portion 15 protrudes from a side of the plug near the restraining portion 17, and a through hole is provided at the center of the external connection portion 15. There is a closed end 150 on the inner wall of this through hole. The user can choose whether to connect the ground wire to the outside. That is, by piercing the closed end 150, the ground wire can be connected to the ground terminal mount 40 inside the plug. Further, in order to allow the user to hold the plug stably, a number of convex portions 16 are provided on the outer surface of the plug to increase the frictional action when the user grips the plug.

The outer shape of the mounting base 20 conforms to the inner wall shape of the casing 10 forming the plug internal space 14. The mounting base 20 is formed in a cover shape, and a ground terminal housing 21 is provided on a flat surface of the mounting base. The ground terminal storage section 21 has a ground terminal storage space 210. In a portion adjacent to the ground terminal storage portion 21, a ground terminal mounting base insertion opening 211 is provided as a through hole. The ground terminal storage space 210 is formed as a closed space, and its depth is slightly smaller than the depth of the plug internal space 14. The ground terminal mount insertion slot 211 constitutes an open space, and auxiliary thin plates are installed at the front and rear, respectively, for positioning. The long auxiliary thin plate has a locking surface 25, which is locked by the fastener 50. A concave portion 27 is formed on the surface of the mounting base 20 between the ground terminal storage portion 21 and the ground terminal mounting base insertion opening 211, and the convex locking body 22 protrudes into the concave portion 27. ing. On both sides of the convex locking body 22, convex electrode terminal insertion portions 23 are formed. Further, the convex electrode terminal insertion section 23 has an electrode terminal position restricting section 230 on the lower surface of the convex section.

The electrode terminal 30 is a long thin piece, and one end is inserted into the electrode terminal insertion portion 23. The electrode terminal 30 is provided with a fastening through-hole 31 formed with a female screw at a position suitable for the locking surface 26 when the electrode terminal is inserted into the electrode terminal insertion portion 23 to a fixed position. In addition, a circular push stopper 32 protrudes substantially in the vicinity of the center of one surface of the electrode terminal 30. When the electrode terminal 30 is inserted into the electrode terminal insertion portion 23, the electrode terminal 30 is pressed against the wall surface on the opposite side of the electrode terminal insertion portion 23 by the action of the circular push stopper 32. In addition, a point-shaped locking portion 33 is projected above and below the vicinity of the formation portion of the circular push stopper portion 32. There is no danger that the terminal 30 will come loose from the electrode terminal insertion portion 23 and fall off. The electrode terminal 30 has a cylindrical positioning portion 34 protruding from the surface opposite to the circular push stop portion 32, and this positioning portion 34 contacts the electrode terminal position limiting portion 230 of the electrode terminal insertion portion. Thus, even if a stress pulling the electrode terminal is applied from below, the electrode terminal 30 is stably held and does not come off. The other end of the electrode terminal 30 is provided with a hole 35, which has a known structure, and a detailed description thereof will be omitted.

The ground terminal mount 40 is formed in the shape of the numeral 7 and a circular ground terminal holding portion 41 having a female thread is provided on a short side thereof. The ground terminal holding portion 41 has an outer shape that fits into the ground terminal storage space 210 of the mounting base 20. Further, the ground terminal mounting base 40 has a plate-shaped conductive member connected to the ground terminal holding portion 41, and the plate-shaped conductive member has a plate-shaped electric conduction portion 44 on a long side portion thereof. Reference numeral 44 denotes a plate-shaped conductive member that has been bent and has a thickness suitable for the ground terminal mounting base insertion opening 211. A fastening through-hole 43 having a female screw is provided near the tip of the electrical conduction portion 44. When the ground terminal mounting base 40 is attached to the mounting base 20, the position of the fastening through-hole 43 is locked. Conforms to face 25. Further, the ground terminal holding portion 41 of the ground terminal mount 40 and the electrical conduction portion 44 are connected by a conductive thin plate connecting portion, and a locking hole 42 is provided at the center of the connecting portion. . The locking hole 42 is adapted to the convex locking body 22 of the mounting base 20 and has a function of locking the ground terminal mounting base 40 so as not to vibrate.

The fastener 50 has the form of a screw. The fastener is fastened and connected to a wire, so that current flows. The fastening tool 50 is configured to lock the fastening through hole 31 of the electrode terminal 30 with the locking surface 26 of the mounting base 20, and to lock the fastening through hole 43 of the ground terminal mounting base 40 and the locking surface 25 of the mounting base 20. And there is no danger of each part being pulled out by these locks.

The ground terminal 60 is a circular rod, and the ground terminal end surface 61 of the circular plane is operated by a single (minus) screwdriver. Tightening threads 62 are provided on the periphery of the ground terminal near the ground terminal end face 61 and are screwed to the ground terminal holding portion 41 of the ground terminal mount 40 so that the ground terminal 60 is held by the ground terminal mount 40. You. At the other end of the ground terminal 60, a circular insertion rod 63 is formed, which is inserted into the ground outlet of the outlet and connected to the ground wire on the outlet side. Since the ground terminal 60 employs a screw thread, the insertion rod 63 may be arranged so as to be stored in the ground terminal storage portion 21 or may be exposed to the outside and connected to an outlet according to needs. You can choose whether to arrange for insertion.

[0022]

【The invention's effect】

 As is clear from the above description, the present invention has the following effects. (1) Even if the plug is not broken, it can be used effectively according to the form of the outlet. The ground terminal is equipped with a screw and can be attached to and detached from the mounting base, so that it can be stored in the ground terminal storage section at any time. Since it is possible, there is no need to cut the ground terminal, and the appearance of the plug is not destroyed. In addition, at this time, an effect is obtained in which the space for accommodating the ground terminal is sealed to prevent foreign matter from entering. When the plug is used, the form can be changed immediately.

(2) There is no need to attach an adapter externally. That is, since the form of the ground terminal can be changed according to the state of use, there is no need to purchase an extra adapter, and labor and cost can be reduced. (3) The wires can be connected reasonably. That is, the internal fastener has a function of tightening each electrode terminal in addition to connecting the wire, so that high convenience is obtained.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an embodiment of the plug of the present invention.

FIG. 2 is an exploded perspective view of the plug according to the embodiment of the present invention;

FIG. 3 is a partially exploded perspective view of an embodiment of the plug of the present invention.

FIG. 4 is a partial cross-sectional view illustrating an example of a use state of the plug according to the embodiment of the present invention;

FIG. 5 is a partial cross-sectional view illustrating another example of a use state of the plug according to the embodiment of the present invention;

FIG. 6 is an external perspective view showing an example of a conventional plug.

FIG. 7 is a three-dimensional explanatory view showing an example of a use state in an example of a conventional plug.

FIG. 8 is a three-dimensional explanatory view showing another example of a use state of an example of a conventional plug.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Casing, 11 ... Wire introduction side end part, 12 ... Mounting stand installation side end part, 13 ... Groove part, 14 ... Plug internal space,
Reference numeral 15: external connection portion, 150: closed end, 16: stop portion, 17: restraining portion, 20: mounting base, 21: ground terminal storage portion, 22: convex locking member, 23: electrode terminal insertion portion, 24
... locking portions, 25, 26 locking surfaces, 27 recesses, 30 electrode terminals, 31 fastening through holes, 32 circular push stop portions, 33 locking portions, 34 positioning portions, 35 holes , 4
0: ground terminal mount, 41: ground terminal holder, 42
... Locking hole portion, 43 ... Tightening through hole, 44 ... Electric conduction portion, 50 ... Fastening tool, 60 ... Earth terminal, 61 ... Earth terminal end face, 62 ... Screw thread, 63 ... Insertion rod, 70 ... Plug, 71: ground terminal, 72: electrode terminal, 80: adapter, 81: electrode terminal, 150: closed end, 210
... Earth terminal storage space, 211 ... Earth terminal mounting base insertion port, 230 ... Electrode terminal position controller.

Claims (4)

[Utility model registration claims] 1. A plug having a power terminal and a ground terminal, the plug having a ground terminal mounting base to which the ground terminal is mounted and disposed inside a casing of the plug. A plug, wherein the terminal mounting base is mounted so that a storage position where the ground terminal is stored in the casing and a protruding position protruding from the casing can be selectively set. 2. The plug according to claim 1, wherein said ground terminal mounting base has a mounting base incorporated in a predetermined position, and said mounting base is provided when said ground terminal is mounted in said storage position. A plug having an accommodation portion for accommodating an earth terminal, wherein the earth terminal mounting base is disposed in the casing in a state of being incorporated into the mounting base. 3. The plug according to claim 2, wherein the ground terminal mounting base includes a ground terminal holding portion that fits along an inner wall of the housing portion, and a plate-shaped conductive member connected to the ground terminal holding portion. The plate-shaped conductive member is configured to extend from the ground terminal holding portion, bend at a bent portion, and then bend at a tip portion thereof to be overlapped, and the ground terminal mounting portion is formed. When the table is incorporated into the mounting table, the stacked portion passes through a predetermined through hole provided in the mounting table,
In the vicinity of the tip of the overlapped form, a tightening portion is locked by using a fastener to a predetermined locking portion provided on the mounting table, and furthermore, the electrode holding portion and the bent portion are A plug, wherein the plate-shaped conductive member between the plugs is provided with a locking hole for locking with a predetermined convex locking body of the mounting base. 4. The plug according to claim 1, wherein the ground terminal is formed in a rod shape having a thread near one end thereof, and the ground terminal holding portion includes A plug having a thread for screwing a thread portion of the ground terminal.