CN103474826B - Waterproof and electric shock-proof socket and its functional module - Google Patents

Abstract

The invention provides a waterproof and anti-electric-shock socket and a function module thereof. The waterproof and anti-electric-shock socket comprises a sealing piece, a magnetic switch, a floating body, magnets and a waterproof shell, wherein the sealing piece is arranged in a jack of a socket and isolates electrical contact between plugs, the magnetic switch controls electrical connection between a plug sleeve and a power line, the floating body can be movably disposed in the socket and has a floating body jack, the floating body jack is aligned with the socket jack and the plug sleeve, the plug sleeve can pass through the floating body jack, the magnets are attached to the floating body and can move along with the floating body, and the waterproof shell is provided with a floating body cavity used for receiving the floating body and a switch cavity used for accommodating the magnetic switch. The floating body is arranged in a plugging path through which the plugs are plugged in the plug sleeve, and the floating body is held by an elastic piece in a first position and can move to a second position in which the plugs and the plug sleeve are allowed to be connected. The magnetic switch is in an open state when corresponding to the magnet in the first position and is in a closed state when corresponding to the magnet in the second position.

Description

Waterproof and electric shock-proof socket and its functional module

technical field

The invention relates to a power socket.

Background technique

The Chinese invention patent application with the publication number "CN101383465" discloses a waterproof socket with no gap between the waterproof ring and the socket body, the waterproof ring and the plug in use, including: the socket body, and the bottom of the inner cavity of the socket body is opened There are at least one pair of pin holes, and the lower part of the socket body is provided with a placement cavity corresponding to the pin holes, and a socket is provided in each cavity, and each socket is composed of a terminal and a socket reed, and each socket The reed is located below the corresponding pin hole; the socket body is also hinged with a waterproof cover that matches the waterproof ring arranged on the inner cavity of the socket body; the waterproof ring is set together with the socket body by injection molding to form an integrated Structure; the waterproof ring adopts the thermoplastic high elastic material PPR which is compatible with the molecular structure of the engineering hard plastic used in the socket body, so that it can be highly bonded. It cannot solve the leakage problem.

Contents of the invention

The purpose of the following content is to provide a waterproof and electric shock-proof socket, its functional modules, and floating mechanism, which can be waterproof and electric shock-proof.

The first invention is a functional module of a waterproof and electric shock-proof socket, which is characterized in that it includes:

socket for engaging with the pin of the plug;

Magnetic switch, control socket and electrical connection of power wiring;

The floating body is movably arranged in the socket and has a floating body jack, and the socket can pass through the floating body jack;

a magnet in associated relationship with the floating body such that the magnet can move with the floating body; and

The waterproof casing has a floating body cavity for receiving the floating body and a switch cavity for accommodating the magnetic switch;

Wherein, the floating body is arranged in the insertion path of the plug into the socket, and the floating body is held at a first position by the elastic member and can move to a second position allowing the plug to engage with the socket. The magnetic switch is in an open state when corresponding to the magnet at the first position, and is in a closed state when corresponding to the magnet at the second position.

The functional module of the waterproof and electric shock-proof socket is further characterized in that the elastic member is arranged between the middle part of the floating body and the waterproof housing; the floating body has a rotating shaft and a positioning part, and the positioning part protrudes from the bottom of the floating body , the waterproof housing is provided with a blocking portion corresponding to the positioning portion, and the blocking portion is located in the moving path of the deflected positioning portion so as to block the positioning portion.

The functional module of the waterproof and electric shock-proof socket is further characterized in that pins smaller than the standard size can be inserted through the socket of the floating body, and pins of the standard size cannot be inserted through the socket of the floating body.

The functional module of the waterproof and electric shock-proof socket is further characterized in that the cavity of the floating body is separated from the cavity of the switch, and the magnet is attached to the floating body.

The further feature of the waterproof and electric shock-proof socket is that the cross-section of the switch cavity is inverted U-shaped, and the lower opening is closed by a fixing plate.

The second invention is a waterproof and electric shock-proof socket, which includes a socket housing, and is characterized in that it also includes any of the aforementioned functional modules and seals arranged in the socket housing, and the seal is arranged in the socket of the socket housing to facilitate Isolate the pins in the socket.

The further feature of the waterproof and electric shock-proof socket is that the socket has a drainage channel passing through the jack of the socket housing, the cavity of the floating body of the waterproof housing, and the conductive sleeve.

The further feature of the waterproof and electric shock-proof socket is that the magnetic switch includes a first magnet, a second magnet and a switch shrapnel, the magnet on the floating body is a third magnet, the second magnet is fixed on the switch shrapnel, and the second magnet is fixed on the switch shrapnel. A magnet is fixed in the switch cavity, and in the first position, the attraction force between the second magnet and the first magnet is smaller than the attraction force between the second magnet and the third magnet so that the switch spring is disconnected The electrical connection between the socket and the power wiring, and in the second position, the attraction force between the second magnet and the first magnet is greater than the attraction force between the second magnet and the third magnet so that the switch shrapnel elastically displaces and electrically Connect sockets and power wiring.

The further feature of the waterproof and electric shock-proof socket is that the floating body, the waterproof casing, the socket and the magnetic switch are integrated in a functional module, and the functional module is built in the casing of the socket and also includes an upper cover , the upper cover plate covers the upper opening provided above the waterproof housing, the upper cover plate has an insertion hole aligned with the housing insertion hole, and the sealing member is arranged between the upper cover plate and the housing.

The third invention is a floating mechanism for an electric shock-proof socket, which is characterized in that it includes a floating body and a waterproof casing, the waterproof casing has a floating body cavity for receiving the floating body, and a gap is arranged between the middle part of the floating body and the casing. The elastic body maintains the floating body at the first position and allows the floating body to move to the second position; the floating body has a rotating shaft and a positioning part, and the rotating shaft is installed in the middle of the waterproof casing, and only It can move up and down, and the floating body can deflect around the rotation axis. The housing is provided with a blocking part corresponding to the positioning part. Jack, the size of the floating body jack satisfies the following conditions:

The plug sleeve of the socket can be allowed to pass through the floating body jack, and the pins smaller than the standard size can be inserted through the floating body jack, and the standard size pins cannot be inserted through the floating body jack.

A further feature of the floating mechanism for electric shock-proof sockets is that the positioning part extends downward from the rotating shaft in the middle of the floating body.

A further feature of the floating mechanism for an electric shock-proof socket is that the elastic member is a coil spring, and a positioning pin of the elastic member is also arranged on the rotating shaft.

A further feature of the floating mechanism for electric shock-proof sockets is that there are slots for additional magnets on the outside of the floating body.

A further feature of the floating mechanism for electric shock-proof sockets is that the housing also has a switch cavity that can accommodate a magnetic switch, and the floating body cavity is separated from the switch cavity.

A further feature of the floating mechanism for electric shock-proof sockets is that the cross-section of the switch cavity is inverted U-shaped, and its lower opening is closed by a fixing plate.

The floating mechanism for electric shock-proof sockets is further characterized in that the housing has a surrounding side wall and a bottom connected to the surrounding side wall, and the top of the surrounding side wall is equipped with an upper cover to close it, The upper cover plate is provided with a bolt hole, and the bottom of the housing has a drainage hole.

When no plug is inserted into the jack, the socket is not charged, so the general conductor will not get an electric shock when inserted into the jack. The jack of the socket is arranged with a sealing ring, which acts as a seal after the plug is inserted. After the plug is inserted into the socket, the magnetic switch is in a conducting state , the socket is live. However, at this time, the mating surface of the plug is engaged with the sealing ring, which isolates the space between the plug pins, and splashing water or other liquids cannot flow into the jack, thus realizing the waterproof and electric shock-proof function.

In addition, the drainage channel is arranged inside the socket, and water splashed on the surface or other liquids flow into the socket and drain directly out of the socket, which will not cause internal water condensation, electric shock and short circuit, etc. Therefore, the socket is also waterproof when no plug is inserted into the socket.

The inside of the socket is equipped with a floating body for operating the magnetic switch, which has the function of identifying the size and quantity of the pins inserted into the jack; hole, the floating body will not move.

When a bolt with a width greater than or equal to the standard size is inserted into any socket, the floating body rotates, the positioning part at the bottom of the floating body bears against the blocking part, and the floating body cannot move down.

When two bolts with a width equal to the standard value are inserted in a balanced manner at the same time, the floating body moves downward, and the positioning part does not deflect, so the floating body moves down to the second position, and the floating body drives the magnet on it to move. When the floating body is in When it is near the highest position (original position), the magnetic switch is turned off, and when it moves down to the vicinity of the second position, the magnetic switch is energized. Therefore, it has the function of preventing electric shock.

Description of drawings

Figure 1 is a C-C sectional view of the waterproof socket.

Fig. 2 is an A-A sectional view of the waterproof socket.

Fig. 3 is a layout diagram of the waterproof socket.

Fig. 4 is a B-B sectional view of the waterproof socket.

Figure 5 is the wiring diagram at the bottom of the waterproof socket module.

Fig. 6 is a structural sectional view of the original state of the waterproof socket module.

Fig. 7 is a sectional view of structure D-D of the waterproof socket module in its original state.

Fig. 8 is a structural sectional view of the waterproof socket module plug inserted.

Fig. 9 is a sectional view of structure E-E after the waterproof socket module plug is inserted.

Fig. 10 is a sectional view of the structural features of the floating body.

Fig. 11 is a sectional view of the structural features of the floating body.

Fig. 12 is a cross-sectional view of the structural features of the floating body when it is in an unbalanced state.

Fig. 13 is a schematic diagram of a magnetic switch.

Fig. 14 is a schematic diagram of the force of the magnetic switch in the original state.

Fig. 15 is a schematic diagram of the force of the magnetic switch when the plug is inserted.

Fig. 16 is an exploded view of the three-dimensional structure of the waterproof socket module.

Fig. 17 is a three-dimensional structural characteristic view of the floating body.

Fig. 18 is a characteristic diagram of the three-dimensional structure of the waterproof case of the module, mainly showing its front side.

Fig. 19 is a three-dimensional structural characteristic view of the waterproof case of the module, mainly showing its back side.

Detailed ways

As shown in FIGS. 1 to 4 , in an embodiment of the present invention, the waterproof and electric shock-proof socket includes an upper casing 5 , a lower casing 13 and one or more functional modules. The functional module includes an upper cover plate 4, a waterproof casing 6 and a magnetic switch.

Referring to Figures 18 and 19 at the same time, there is an opening in the middle of the waterproof housing 6, with a middle cavity 61 (floating body cavity) and side cavities 62 (switch cavities) located on opposite sides of the middle cavity 61, the middle cavity The socket 9, the floating body 10, the third magnet 8, the spring 14, etc. described later are placed in the body 61. The positioning portion 1005 of the corresponding floating body 10 is provided with a blocking portion 601, and the lowest part of the middle cavity 61 is provided with a drainage hole 603. The periphery and the top of the side chamber 62 are sealed, and the bottom is open for installing the magnetic switch, so that the splashed water above cannot flow into the inside.

The shapes of the two side cavities 62 of the waterproof housing 6 can be the same or slightly different, and its main function is to seal and separate from the middle cavity 61. In the description below, the two side cavities 62 are essentially The above is the same, and only one side cavity 62 is described, and the description is applicable to the other side cavity at the same time. The opening of the side cavity 62 is below, and the opening is fixed by the fixing plate 16. The cross section of the side cavity 62 is in the shape of an "inverted U". There is a fixed first magnet 1 and a movable second magnet 7 in the side cavity 62. The second magnet 7 is fixed on the switch spring 11 and can move with the switch spring 11. One end of the switch spring 11 is fixed. The other end is provided with an electrical contact (such as a silver contact) for contact with the electrical contact 15, as shown in Figure 5, the switch shrapnel 11 is electrically connected to the corresponding socket 9, as described later, the socket 9 is set on In the waterproof case 6. When the switch shrapnel 11 was in contact with the electrical contact 15, the plug sleeve 9 was charged, and when the switch shrapnel 11 was not in contact with the electrical contact 15, the plug sleeve 9 was not charged.

The upper cover plate 4 is covered above the middle cavity 61 , and the upper cover plate 4 has a jack for inserting the plug pin of the plug 2 , through which the plug pin of the plug 2 can be inserted into the middle cavity 61 . The floating body 10 is disposed in the middle cavity 61 , and the third magnets 8 are respectively fixedly disposed on the sides of the floating body 10 adjacent to the side cavity 62 . The first magnet 1, the second magnet 7, and the third magnet 8 can be soft magnets or permanent magnets, but the relationship between the three should be satisfied as shown in Figure 14 and Figure 15, that is, when the floating body 10 is not plugged When the plug is pushed correctly, the adsorption force of the third magnet 8 to the second magnet 7 is greater than that of the first magnet 1 to the second magnet 7. The adsorption force of the first magnet 1 to the second magnet 7 is greater than the adsorption force of the third magnet 8 to the second magnet 7 . In an embodiment of the present invention, the first magnet 1 is a fixed iron block, the second magnet 7 is a magnet located in the middle, and the third magnet 8 is a floating magnet.

As shown in Figure 17, grooves 1004 are respectively provided on the sides of the floating body 10 adjacent to the side cavity, and the third magnet 8 is placed in the grooves 1004, and the same side grooves 1004 can be a continuous groove or a common groove. Discontinuous grooves in the sidewalls. In addition, in other embodiments of the present invention, multiple third magnets 8 may also be respectively placed in multiple grooves. As shown in Figures 10 and 17, there is a boss 1002 with a slope on the side wall of the groove 1004. The boss 1002 can be elastic, and its slope can guide the magnet 8 into the groove, and the lower edge of the boss 1002 The magnet 8 can be positioned and fixed. A pair of bosses 1001 are arranged under a jack of the floating body 10 facing the upper cover 4. The spacing b of the bosses 1001 is slightly smaller than the standard bolt width B. When the bolt width is smaller than b, it can be inserted, and when it is larger than b, the floating body 10 can be pushed. move down. In the middle of the floating body 10 is a rotating shaft 1006, and the rotation of the rotating shaft 1006 is realized by cooperation with the waterproof casing 6. The rotating shaft 1006 is used for positioning when the floating body 10 rotates and moves up and down. A downwardly extending positioning portion 1005 is provided in the middle of the rotating shaft 1006. When the floating body 10 is unbalanced, the positioning portion 1005 deflects and will push against the positioning rib 601 of the waterproof casing 6. A spring fixing pin 1003 is also provided in the middle of the rotating shaft 1006. To place the spring 14.

Continuing to refer to Fig. 1 to Fig. 4, the functional modules are installed in the upper and lower housings 5, 13, and a sealing member 3 is arranged between the upper cover plate 4 and the upper housing 5 of the functional modules, and the sealing member 3 is in the shape of a jack, The jacks of the upper shell 5 , the upper cover 4 , and the seal 3 are aligned so that the pins of the plug 2 can be inserted. Around the insertion hole of the sealing member 3 is an annular protrusion 30 with a V-shaped groove 31, and an annular boss 51 is provided inside the upper housing 5, which can engage with the sealing member 3, which helps to improve the sealing performance. The sealing member 3 seals the gap between the upper case 5 and the upper cover 4 . The V-shaped groove 31 on the sealing member 3 can better seal the gap between the pin of the plug 2 and the upper shell. As shown in FIG. 2 , the seal 3 separates the two pins of the plug 2 .

The lower casing 13 is provided with a drainage hole 130 directly below the drainage hole 603 of the waterproof casing 6 of the module, and a water barrier 131 is arranged around the module.

Continuing to refer to Fig. 1 to Fig. 5, in combination with Fig. 6 and Fig. 7, when the socket is in the original state, that is, when the plug 2 is not inserted, the third magnet 8 installed on the floating body 10 is at the highest position under the action of the spring 14. A magnet 1, the second magnet 7 and the third magnet 8 are basically at the same level, and the attractive force P of the second magnet 7 and the third magnet 8 (as shown in Figures 14 and 15) is greater than that of the first magnet and the second magnet 7 Therefore, the second magnet 7 located between the first magnet 1 and the third magnet 8 will move in the direction of the third magnet 8, and at the same time drive the contact on the switch shrapnel 11 to break away from the contact 15 on the lug 12 , so that the electrical connection between the switch shrapnel 11 and the lug 12 is disconnected.

When the plug 2 is inserted into the jack, the pins of the plug 2 are respectively pressed on the bosses 1001 of the floating body 10, pushing the floating body 10 to move down, and the third magnet 8 moves down at the same time, and the plug pin is inserted into the socket 9. At this time, the third The magnet 8 and the second magnet 7 are not at the same height, the attractive force P of the second magnet 7 and the first magnet 1 is greater than the attractive force F between the second magnet 7 and the third magnet, so the second magnet 7 is drawn toward the first magnet 1 Direction movement, and at the same time drive the switch shrapnel 11, so that the contact on the switch shrapnel 11 contacts the contact 15 on the lug 12, so that the electrical connection between the switch shrapnel 11 and the lug 12 is realized to form a path.

The sealing member 3 is made of elastic material and is located between the upper casing 5 and the upper cover plate 4 of the module. There is a circle of bosses 51 inside the upper casing. When the module is installed, the deformation of the sealing member 3 can play a good role. sealing effect. When the pin of the plug 2 is inserted into the jack, the mating surface of the plug 2 contacts the boss 30 of the seal 3, and the seal 3 isolates the pin of the plug, and the water on the surface of the socket cannot flow into the jack.

The floating body 10 has two pairs of bosses 1001 located directly below the socket, and the gap b between the two bosses is slightly smaller than the width B of the bolt. When a bolt with a width smaller than b is inserted into any one or two holes, the floating body 10 will not move through the gap, as shown in FIG. 10 . When a plug with a width greater than b is inserted into the socket, the floating body 10 rotates around its axis of rotation, and the positioning part 1005 at the bottom of the floating body 10 withstands the positioning rib 601 in the seat, and the floating body 10 cannot move down.

When the two pins with a width greater than b are inserted in a balanced manner at the same time, the floating body does not rotate but moves downward, and the positioning part 1005 is inserted into the gap 602 in the middle of the waterproof socket, as shown in Figures 9 and 12 .

When the socket has no plug inserted into the jack, the splashed water on the surface of the socket will be injected into the jack, and flow out from the drain hole 603 at the bottom of the waterproof shell 6 through the socket sleeve 9 and the inner space of the waterproof shell 6, and then through the outlet of the lower shell 13 of the socket. The drain hole 130 drains the socket, and the inside of the socket will not accumulate water. Since the plug sleeve is not charged at this time, situations such as electric shock and short circuit will not be formed.

When the plug is inserted into the socket, the socket 9 is charged, but the mating surface of the plug 2 is engaged with the sealing member 3, and the splashed water on the surface of the socket will not flow into the charged socket from the jack.

In the aforementioned or other embodiments of the present invention, the magnetic switch is not completely sealed, and the two-pole sockets are also completely exposed.

Although the embodiment shown in the figure only takes a single-phase two-pole socket as an example, the foregoing embodiments are also suitable for single-phase two-pole grounded sockets and three-phase sockets. Although the magnetic switch in the foregoing embodiments has been described with the specific structure in the figure as an example, the magnetic switch in other embodiments of the present invention can have various modifications, for example, the first magnet and the second magnet can be replaced by two reeds, The third magnet can be pushed by the floating body, and there is no connection between the two. As long as the switch can be opened and closed in response to the change of the intensity of the magnetic signal, it can be used for the electrical connection of the power wiring and the socket.

Claims (9)

1. a functional module for waterproof electric-shock-resistant socket, is characterized in that, comprising:

Sleeve, for engaging with the latch of plug;

Magnetic switch, controls the electrical connection of sleeve and power supply wiring;

Buoyancy body, is arranged in socket movably, has buoyancy body jack, and sleeve can pass from buoyancy body jack;

Magnet, relevant with buoyancy body, can move with buoyancy body; And

Waterproof case, has the buoyancy body cavity accepting buoyancy body and the switch cavity holding magnetic switch;

Wherein, buoyancy body is arranged on latch and is inserted in the insertion path of sleeve, buoyancy body remains on primary importance by elastic component and can press against by the latch of plug the second place being pushed to and allowing latch to engage with sleeve, magnetic switch is in off-state when the primary importance of the corresponding buoyancy body of magnet, is in closure state when the second place of the corresponding buoyancy body of magnet.

2. the functional module of waterproof electric-shock-resistant socket as claimed in claim 1, it is characterized in that, buoyancy body has rotating shaft and location division, and this rotating shaft is arranged on the centre of waterproof case, by the location of waterproof case, can only move up and down, buoyancy body can deflect around the shaft, and location division is stretched out from the below of buoyancy body, waterproof case is provided with the stop part of corresponding location division, stop part is arranged in the active path of the location division after deflection, plays barrier effect to location division.

3. the functional module of waterproof electric-shock-resistant socket as claimed in claim 1, it is characterized in that, being less than standard-sized latch can be inserted through from buoyancy body jack, and standard-sized latch can not be inserted through from buoyancy body jack.

4. the functional module of waterproof electric-shock-resistant socket as claimed in claim 1, it is characterized in that, buoyancy body cavity and switch cavity separate, and magnet is attached in buoyancy body.

5. the functional module of waterproof electric-shock-resistant socket as claimed in claim 1, it is characterized in that, the cross section of described switch cavity is inverted U-shaped, and its underpart opening is closed by fixed head.

6. waterproof electric-shock-resistant socket, is characterized in that, comprises the functional module according to any one of claim 1 to 5, and also have seal and Socket casing, the seal is arranged at the jack of Socket casing, so that the latch in isolation socket.

7. waterproof electric-shock-resistant socket as claimed in claim 6, it is characterized in that, this socket has the drainage channel through the jack of Socket casing, the buoyancy body cavity of waterproof case and sleeve.

8. waterproof electric-shock-resistant socket as claimed in claim 6, it is characterized in that, described magnetic switch comprises the first magnet, second magnet and switch shrapnel, magnet in buoyancy body is the 3rd magnet, second magnet is fixed on switch shrapnel, first magnet is fixed in described switch cavity, in described primary importance, absorption affinity between second magnet and the first magnet is less than the absorption affinity between the second magnet and the 3rd magnet, to make the electrical connection between switch shrapnel disconnection sleeve and power supply wiring, in the described second place, the absorption affinity of the second magnet and the first magnet is greater than the absorption affinity between the second magnet and the 3rd magnet, to make the flexible displacement of switch shrapnel and closed electrical connection between sleeve and power supply wiring.

9. waterproof electric-shock-resistant socket as claimed in claim 6, it is characterized in that, described buoyancy body, waterproof case, sleeve and magnetic switch are integrated in functional module, this functional module to be built in the housing of socket and also to comprise upper cover plate, this upper cover plate covers the upper shed arranged above waterproof case, upper cover plate has the jack of alignment housing jack, and arranges described seal between upper cover plate and housing.