CN111987518A - Safety door assemblies and sockets for sockets - Google Patents

Abstract

The present application provides a safety door assembly and a socket for a socket. The safety door assembly includes a sliding block frame, a sliding block and an elastic member placed in the sliding block frame; The elastic piece is arranged to make the slider cover the socket hole in the initial state of the elastic piece; wherein, the slider includes two inclined surfaces, and when the inserting piece is only inserted against one of the inclined surfaces, the limiting piece restricts the movement of the slider; When the inserts are simultaneously inserted against the two inclined surfaces, the slider moves along the slider frame under the action of the balancer to expose the socket holes. The safety door assembly of the present application is simple in structure, safe and reliable, and easy to use, and can be applied to various types of sockets; at the same time, due to the simplified installation structure, the safety door assembly is conducive to mass production, processing and assembly, and improves installation efficiency, and has good cost Benefit and wide application.

Description

Safety door assemblies and sockets for sockets

technical field

The present application generally relates to the field of household appliances, and more particularly, to a safety door assembly for a socket and a socket having the safety door assembly.

Background technique

In people's daily life, electrical sockets can be seen everywhere, and are usually installed or placed in homes or public places for ease of use. However, most of the socket holes of the existing sockets are exposed. Once a child inserts a conductive foreign object such as metal into any live socket hole out of curiosity, it will easily cause electric shock injury, thereby endangering life, property and safety. The same is true for adult misoperation. Although some sockets on the market are also equipped with safety door devices, they are usually complicated in structure, difficult to assemble, difficult to realize automatic production and assembly, and have high cost and low production capacity. Thus, there is still much room for improvement in terms of structural simplification and cost-effectiveness.

SUMMARY OF THE INVENTION

The purpose of the present application is to address the above-mentioned defects in the prior art, and to propose a safety door assembly for a socket, which can move with the insertion process of the insert, and can prevent foreign objects or incorrect insertion of the insert, Thereby, the safety of use is further improved, the occurrence of electric shock accidents is effectively avoided, and at the same time, the utility model has the advantages of low cost and convenient automatic assembly.

To this end, according to one aspect of the present application, a safety door assembly for a socket is provided, wherein the safety door assembly includes a slider frame, a slider and an elastic member placed in the slider frame; the slider The frame is provided with a plurality of notches corresponding to the shape of the socket hole, and is provided with a limiting member and a balance member that can abut with the slider; the elastic member is set to make all the elastic members in the initial state of the elastic member. The sliding block covers the socket hole; wherein, the sliding block includes two inclined surfaces, and when the insert is only inserted against one of the inclined surfaces, the limiting piece restricts the movement of the sliding block; When the two inclined surfaces are inserted at the same time, the slider moves along the slider frame under the action of the balance member to expose the socket hole.

According to the above technical idea, the present application may further include any one or more of the following optional forms.

In some optional forms, the balancer is provided as a lever shaft with an arcuate surface protruding from the bottom inner surface of the slider frame, the lever shaft being perpendicular to the movement of the slider extending in the direction, in the initial state of the elastic member, the lever shaft is located at a substantially middle position of the bottom surface of the slider.

In some optional forms, the balancer includes a pair of lever shafts symmetrically disposed on the bottom inner surface of the slider frame, the pair of lever shafts extending toward each other perpendicular to the direction of movement of the slider.

In some optional forms, the slider is provided with a groove for accommodating the elastic member, the groove is provided with a working surface for driving the elastic deformation of the elastic member, and the elastic member is held Locking surface in elastically deformed state.

In some optional forms, the slider frame is provided with a fixing portion for fixing the elastic member, and the fixing portion includes a protrusion protruding from the inner surface of the bottom or the inner surface of the side wall of the slider frame. post or slot.

In some optional forms, the limiting member on the slider frame includes a protrusion protruding from the bottom inner surface of the slider frame, and the slider is provided with a block capable of abutting against the protrusion. The first limit surface of the connection.

In some alternative forms, the bumps are disposed adjacent to at least one of the indentations.

In some optional forms, the slider is further provided with a second limiting surface, and the second limiting surface can abut with a limiting protrusion provided on the housing of the socket.

In some optional forms, the limiting protrusions are disposed adjacent to at least one socket hole.

In some alternatives, the two ramps of the slider are configured to have different ramp sizes so that the inserts have different travel strokes.

In some optional forms, the elastic member is a compression spring, a tension spring, an elastic leaf or a torsion spring.

According to another aspect of the present application, there is provided a socket comprising a housing and a socket sheet disposed in the housing, wherein the housing comprises an upper cover and a base connected to each other, and the upper cover and the socket are connected to each other. At least one safety door assembly for the socket as described above is arranged between the socket pieces.

In some optional forms, the socket is a leakage protection socket.

In some optional forms, the receptacle is compliant with the ANSI/NEMA WD6 standard.

The safety door assembly of the present application is simple in structure, safe and reliable, and easy to use, and can be applied to various types of sockets; at the same time, due to the simplified installation structure, the safety door assembly is conducive to mass production, processing and assembly, and improves installation efficiency, and has good cost Benefit and wide application.

Description of drawings

Other features and advantages of the present application will be better understood from the following alternative embodiments described in detail in conjunction with the accompanying drawings, in which like numerals identify the same or similar parts, wherein:

1A is an exploded schematic view of a safety door assembly for a socket according to an embodiment of the present application;

FIG. 1B is an exploded schematic view of the safety door assembly shown in FIG. 1 from another perspective;

1C is an exploded schematic view of the safety door assembly shown in FIG. 1 from another perspective;

Fig. 2 is the schematic diagram of the slider in the safety door assembly shown in Fig. 1;

3A is a schematic plan view of the safety door assembly in a closed state;

3B is a schematic cross-sectional view of the safety door assembly shown in FIG. 3A;

4A is a schematic plan view of the safety door assembly in an open state;

4B is a schematic cross-sectional view of the safety door assembly shown in FIG. 4A;

5A is a schematic cross-sectional view of a socket with a safety door assembly in a protected state, showing a foreign object inserted through a socket hole;

5B is another schematic cross-sectional view of the socket with the safety door assembly in a protected state, showing a foreign object inserted from another socket hole;

6A is a schematic cross-sectional view of a receptacle with a safety gate assembly in normal operation, where an insert that is a NEMA 15A plug is about to be inserted into the receptacle;

6B is another schematic cross-sectional view of the socket with the safety door assembly in a normal working state, wherein the insert of the NEMA15A plug is normally inserted into the socket;

Figure 7A is another schematic cross-sectional view of a socket with a safety door assembly in a normal working state, wherein an insert that is a NEMA20A plug is about to be inserted into the socket;

7B is another schematic cross-sectional view of the socket with the safety door assembly in a normal working state, wherein the insert of the NEMA20A plug is normally inserted into the socket;

8A is an exploded schematic view of one embodiment of a socket with a safety door assembly;

8B is a schematic partial cross-sectional view of another embodiment of a socket with a safety door assembly;

8C is a schematic partial cross-sectional view of yet another embodiment of a socket with a safety door assembly;

FIG. 9 is a schematic diagram of an automatic assembly process of the safety door assembly.

Detailed ways

The implementation and use of the embodiments are discussed in detail below. It should be understood, however, that the specific embodiments discussed are merely illustrative of specific ways to make and use the application, and do not limit the scope of the application. In the description, the structural positions of various components, such as directions such as upper, lower, top, and bottom, are not absolute, but relative. These directional representations are appropriate when the various components are arranged as shown in the figures, but when the positions of the various components in the figures are changed, the directional representations also change accordingly.

1A to 1C , a safety door assembly 100 for a socket according to an embodiment of the present application is shown, the safety door assembly 100 includes a slider frame 1 , a slider 3 and an elastic member placed in the slider frame 1 2. Wherein, the slider frame 1 is provided with a plurality of notches corresponding to the shape of the socket hole, and the notches can be set as I-shaped notches and/or T-shaped notches according to actual needs, such as the I-shaped notches 13 and T-shaped notches exemplarily shown in the figure. Shaped notches 14, so that they can be adapted to sockets of different standards. The slider frame 1 is also provided with a limit member and a balance member that can abut against the slider 3 , and the slider 3 includes two inclined surfaces 33 and 34 . According to the present application, when the insert is only inserted against one of the inclined surfaces, the limiter can limit the movement of the slider 3; when the insert is inserted against the two inclined surfaces at the same time, the slider 3 can slide along under the action of the balancer The block frame 1 is moved to expose the socket holes. Preferably, the elastic member 2 is arranged to enable the slider 2 to cover the socket hole in its initial state. In this way, the safety door assembly can effectively avoid the insertion of foreign objects or the misoperation of the plug, and at the same time, when in the protection state (that is, the slider covers the socket hole), the safety door assembly can also isolate the components in the socket from the outside world, thereby Protected against adverse effects from the external environment such as dust, moisture, etc.

In some embodiments, the balancer is provided as a lever shaft 11 with an arcuate surface protruding from the bottom inner surface of the slider frame 1 ( FIG. 3B , FIG. 4B ), the lever shaft 11 being perpendicular to the slider The moving direction of the slider 3 extends, and preferably, in the initial state of the elastic member 2, the balance member is at a substantially middle position of the bottom surface of the slider 3. In this way, the lever shaft 11 achieves a balancing effect on the slider relative to the slider frame inverting and moving along the slider frame, thereby reducing friction and improving working life. It should be understood that the lever shaft 11 can also be set as a convex edge, or a plurality of continuous convex points extending perpendicular to the moving direction of the slider, or even directly set as a larger convex point.

In some embodiments, the balancer may include a pair of lever shafts 111 , 112 symmetrically arranged on the bottom inner surface of the slider frame 1 ( FIG. 1A , FIG. 1C ), and the pair of lever shafts 111 , 112 are arranged vertically They extend toward each other in the moving direction of the sliders 3 .

It can also be seen from FIG. 1C that the limiting member on the slider frame 1 includes a protrusion 15 protruding from the bottom inner surface of the slider frame 1 , and similarly, the protrusion can also be set as a convex edge or a convex point . Advantageously, this bump 15 is arranged adjacent to at least one indentation. Referring to FIG. 2 , the slider 3 is provided with a bottom surface A corresponding to the bottom inner surface of the slider frame 1 , and the bottom surface A is substantially parallel to the bottom inner surface of the slider frame 1 . In addition, the slider 3 is provided with a first limiting surface B that can abut against the bumps 15 . In order to limit the position of the slider, another limit protrusion 41 may also be provided on the socket, and advantageously, the limit protrusion 41 is arranged adjacent to at least one socket hole, as shown in FIG. 5B to FIG. 7B , Correspondingly, the slider 3 is further provided with a second limiting surface C to abut with the limiting protrusion 41 , which will be described in detail below.

1A to FIG. 4B , according to the present application, the elastic member 2 may be any one of a compression spring, a tension spring, an elastic leaf or a torsion spring, which is exemplarily shown as a torsion spring in the figures. One end of the elastic member 2 is connected to the slider 3 , and the other end is abutted against a corresponding structure provided on the slider frame 1 , for example, abuts against the inner side wall of the slider frame 1 . The slider frame 1 is provided with a fixing portion for fixing the elastic member 2, and the fixing portion includes a protruding post or a hole groove protruding from the bottom inner surface or the inner surface of the side wall of the slider frame 1, such as FIG. 1A and FIG. 1C The protrusions 12 protruding from the bottom inner surface of the slider frame 1 are shown in FIG. In order to simplify the structure and reduce the accommodating space in the socket, the sliding block 3 is provided with a groove 32 for accommodating the elastic member 2, and the groove can also realize the installation and positioning of the sliding block and the elastic member. In some embodiments, the groove 32 may be provided with a working surface 321 for driving the elastic member 2 to elastically deform, and a locking surface 322 for maintaining the elastic member 2 in an elastically deformed state. Specifically, referring to FIGS. 3A and 3B , when the elastic member 2 is in the initial state, that is, when the slider 3 covers the notch (and thus the socket hole), if the normal insertion of the insert is performed, the elastic member 2 abuts against the sliding block 3 One end is elastically deformed with the movement of the slider 3, and moves along the working surface 321 until it moves to the locking surface 322. At this time, the notch (and the socket hole) is exposed, and the insert can be inserted smoothly, as shown in Figure 4A and shown in Figure 4B.

In addition, it can also be seen from the figures that, in some embodiments, the two slopes of the slider may be configured to have different slope dimensions, so that the inserts have different travel strokes. For example, bevel 33 fits into I-notch 13, and slope 34 has a larger bevel dimension to fit in T-notch 14, which helps the safety door assembly fit different standard sizes of receptacles, such as ANSI/NEMAWD6 standard.

The working process of the safety door assembly of the present application is further described below with reference to FIGS. 5A to 7B .

First, the socket is shown as comprising a housing and socket pieces 51, 52 disposed within the housing, the housing comprising an upper cover 4 and a base 6 connected to each other, between which the above-mentioned cover 4 and socket pieces 51, 52 are provided. Safety door assembly.

When no insert is inserted, the safety door assembly is in a closed state due to the action of the elastic member 2, so that the slider 3 is kept in a static state without turning or tilting relative to the slider frame, and the safety door assembly is in a closed state.

When a foreign object is inserted from one socket hole of the socket, as shown in FIG. 5A, it is inserted into the socket hole on the left side, the foreign object contacts the inclined surface 33 on the slider 3 and moves downward to apply a downward force, due to the lever shaft 11, the right side of the slider 3 will be raised, and the left side will be limited by the first limiting surface B and the bump 15 on the slider frame 1, and foreign objects cannot be inserted. Similarly, when the foreign object is inserted from the socket hole on the right side as shown in FIG. 5B , the right slope 34 of the slider 3 is exerted downward force, so that the left side of the slider 3 is raised. At this time, the slider 3 The second limiting surface C is in contact with the limiting protrusion 41 on the socket housing. Foreign objects still cannot be inserted, realizing safety protection.

As mentioned above, the safety door assembly of the present application is suitable for various sockets under the ANSI/NEMA WD6 standard, such as 1-15P, 5-15P, 5-20P, 6-15P, 6-20P, etc. When using a plug that meets the standard requirements, such as the NEMA 15A plug shown in Figures 6A and 6B, or the NEMA 20A plug shown in Figures 7A and 7B, the plug blades are inserted into the two socket holes of the upper cover 4 at the same time, because Due to the balancing action of the lever shaft 11 , the slider 3 will not turn over relative to the slider frame 1 . At this time, due to the downward insertion force along the slope of the slider 3, the slider 3 moves along the slider frame 1 and compresses the elastic member 2, thereby exposing the socket hole, the plug can be inserted normally, and is connected with the socket pieces 51, 52 Contacts make electrical connections. It should be understood that if the plug is pulled out, due to the resilience of the elastic member 2, the slider 3 will move back to the original position, and continue to play a protective role against mis-insertion.

FIGS. 8A-8C exemplarily illustrate several socket structures using the safety door assembly of the present application, wherein FIG. 8A is similar to the socket shown in FIGS. 6A-7B and includes two safety door assemblies 100 . It can be seen from FIG. 8B and FIG. 8C that the structures of the positive and negative jacks and ground jacks of the socket can be changed as required, and the socket can also be a wall-type socket or an extension cord-type socket, but the structure of the safety door assembly 100 does not need to be any changes. In addition, due to the compact and simple structure of the safety door assembly, the overall size of the socket in which the safety door assembly is installed does not change much, so the safety door assembly has a wide range of applications. Furthermore, since the safety door assembly of the present application has few components, and each component can be mutually limited, automatic production can be realized and assembled into a whole. For example, Fig. 9 shows a schematic diagram of an automatic assembly process of the safety door assembly, wherein the slider frame 1, the elastic member 2 and the slider 3 can be provided in sequence along the production line in the direction of the arrow shown in the figure, and the three can be assembled during the conveying process. Autowiring becomes a whole. First, put the elastic piece 2 into the slider frame 1 and fix it, then put it into the slider 3, and make the elastic piece 2 snap and fix with the groove in the slider 3, so as to quickly and easily complete the assembly of the safety door assembly . In certain embodiments, the individual safety door assemblies can be assembled automatically. In some embodiments, multiple safety door assemblies can also be automatically assembled at the same time.

It should be understood here that the embodiments shown in FIGS. 1 to 9 only show optional shapes, sizes and arrangements of various optional components of the safety door assembly and socket according to the present application, but they are only illustrative and not limiting, Other shapes, sizes and arrangements may also be employed without departing from the spirit and scope of the present application. In addition, the sliding block frame and the sliding block in the safety door assembly in the above embodiments are respectively shown and described in the form of integral molding, so as to facilitate processing and assembly, but they can also be formed separately or partially combined according to the number of socket holes.

The technical content and technical characteristics of the present application have been disclosed above. However, it can be understood that under the creative ideas of the present application, those skilled in the art can make various changes and improvements to the above disclosed ideas, but all belong to the protection scope of the present application. . The descriptions of the above embodiments are illustrative rather than restrictive, and the protection scope of the present application is determined by the claims.

Claims (14)

1. The safety door assembly for the socket is characterized by comprising a sliding block frame, a sliding block and an elastic piece, wherein the sliding block and the elastic piece are arranged in the sliding block frame; the sliding block frame is provided with a plurality of notches corresponding to the shapes of the socket holes, and is provided with a limiting part and a balancing part which can be abutted against the sliding block; the elastic piece is arranged to enable the sliding block to cover the socket hole in an initial state of the elastic piece;

The sliding block comprises two inclined planes, and when the insert piece is inserted against only one of the inclined planes, the limiting piece limits the sliding block to move; when the insert is simultaneously inserted against the two inclined surfaces, the slider moves along the slider frame under the action of the balance member to expose the socket hole.

2. The safety door assembly for a receptacle according to claim 1, wherein the balance member is provided as a lever shaft with an arc-shaped surface protruding from a bottom inner surface of the slider frame, the lever shaft extending perpendicular to a moving direction of the slider, and the lever shaft is located at a substantially middle position of a bottom surface of the slider in an initial state of the elastic member.

3. The safety door assembly for a receptacle according to claim 2, wherein the balance includes a pair of lever shafts symmetrically disposed at a bottom inner surface of the slider frame, the pair of lever shafts extending toward each other perpendicular to a moving direction of the slider.

4. The safety door assembly for a socket according to claim 1, wherein the slider is provided with a groove for receiving the elastic member, and the groove is provided therein with a working surface for driving the elastic member to be elastically deformed and a locking surface for maintaining the elastic member in an elastically deformed state.

5. The safety door assembly for a receptacle according to claim 1, wherein the slider frame is provided with a fixing portion fixing the elastic member, the fixing portion including a projection or a groove projecting from an inner surface of a bottom portion or an inner surface of a side wall of the slider frame.

6. The safety door assembly for a receptacle according to claim 1, wherein the stopper on the slider frame includes a projection projecting from a bottom inner surface of the slider frame, and the slider is provided with a first stopper surface capable of abutting against the projection.

7. The safety door assembly for a receptacle according to claim 6, wherein the tab is disposed adjacent at least one of the notches.

8. The safety door assembly for a socket according to claim 6, wherein the sliding block is further provided with a second limiting surface, and the second limiting surface can be abutted against a limiting protrusion arranged on the housing of the socket.

9. The safety door assembly for a receptacle according to claim 8, wherein the stopper projection is disposed adjacent to at least one receptacle hole.

10. The safety door assembly for a receptacle according to any one of claims 1 to 9, wherein the two inclined surfaces of the slider are provided to have different inclined surface sizes so that the insert has different moving strokes.

11. The safety door assembly for a receptacle according to any one of claims 1 to 9, wherein the elastic member is a compression spring, a tension spring, a spring plate, or a torsion spring.

12. A receptacle comprising a housing and a receptacle strip disposed within the housing, characterized in that the housing comprises an upper cover and a base connected to each other, between which at least one safety door assembly for a receptacle according to any one of claims 1 to 11 is disposed.

13. The receptacle of claim 12, wherein the receptacle is a residual current device.

14. The receptacle of claim 12, wherein the receptacle is adapted for use with ANSI/NEMA WD6 standards.

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