Leakage protector

Abstract

The present invention provides a leakage protector, which comprises a housing, a button member, a mounting plate, a waterproof pad, a contact piece and a PCB board; the housing defines a first through hole; the PCB board is installed inside the housing and has contacts; the button member is inserted into the first through hole and its top protrudes out of the housing; the mounting plate is arranged inside the housing and defines a second through hole; the waterproof pad has a support body and an assembly body, the assembly body is inserted into the second through hole and is movable, the top end of the assembly body contacts or connects with the bottom end of the button member, the support body includes an inclined portion and a horizontal portion, the inclined portion is arranged obliquely downward and its top end connects the outer side wall of the assembly portion, its bottom end connects the horizontal portion, and the horizontal portion is hermetically arranged between the mounting plate and the housing; the contact piece is inserted on the assembly body and its contact surface protrudes out of the assembly body to be suitable for contacting the contacts; thereby, the leakage protector has a simple structure, convenient assembly, reliable protection, and can reliably realize the protection and reset processes of the leakage protector.

Description

Technical Field

[0001] The present invention relates to the technical field of leakage protection, and particularly relates to a leakage protector. Background Art

[0002] With the increasing popularity of household appliances, people pay more and more attention to the safety of using household appliances. At present, many household appliances are equipped with electric protection devices, such as leakage protectors.

[0003] In the related art, the leakage protector resets the button through the elastic force of the spring, and its structure is complex and the assembly is troublesome. Summary of the Invention

[0004] Based on the above problems, the object of the present invention is to provide a leakage protector, which has a simple structure, is convenient to assemble, has reliable protection, and can reliably realize the reset and protection processes of the leakage protector.

[0005] To achieve the above object, an embodiment of the present invention provides a leakage protector, which includes: a housing, a button member, a mounting plate, a waterproof pad, a contact piece, and a PCB board;

[0006] The housing defines a first through hole that penetrates the inside and the outside of the housing;

[0007] The PCB board is installed inside the housing, and the PCB board has contacts;

[0008] The button member is inserted into the first through hole and its top protrudes out of the housing;

[0009] The mounting plate is arranged inside the housing, and the mounting plate defines a second through hole;

[0010] The waterproof pad has a support body and an assembly body. The assembly body is inserted into the second through hole and is movable between a first position and a second position. The top end of the assembly body contacts or connects to the bottom end of the button member. The support body includes an inclined portion and a horizontal portion. The inclined portion is inclined downward, its top end is connected to the outer side wall of the assembly portion, and its bottom end is connected to the horizontal portion. The horizontal portion is sealed between the mounting plate and the housing;

[0011] The contact piece is inserted on the assembly body and its contact surface protrudes from the assembly body to be adapted to contact the contacts;

[0012] When the button member is pressed, the assembly body moves from the first position to the second position, and the contact piece is connected to the contacts; when the button member is released, the assembly body moves from the second position to the first position, and the contact piece is disconnected from the contacts.

[0013] The leakage protector according to the embodiment of the present invention, through the design of the support body and the assembly body on the waterproof pad, when the button member is pressed, the contact surface of the contact piece is driven by the assembly body to contact the contact point to be turned on. After the button member is released, the support legs of the waterproof pad have an elastic restoring force to drive the assembly body to drive the contact piece to disconnect from the contact point, and the button member returns to its original position. In this way, the contact piece and the waterproof pad are assembled together, making the overall structure simple and the assembly convenient. The waterproof pad has the functions of resetting and protecting, and can reliably realize the reset process of the leakage protector.

[0014] In addition, the leakage protector proposed according to the above embodiment of the present invention further has the following additional technical features:

[0015] Optionally, the waterproof pad is an elastic member.

[0016] Further, a convex platform protrudes upward from the top end of the assembly body, and the convex platform contacts the bottom end of the button member.

[0017] Optionally, the assembly body and the button member are integrally formed. Thus, the button member and the waterproof pad form a whole, reducing the number of parts and further simplifying the assembly.

[0018] Optionally, the assembly body is in a columnar shape, and the support body is annularly arranged on the outer peripheral surface of the assembly body.

[0019] Optionally, the assembly body has an installation groove with an opening facing downward, and the contact piece is inserted into the installation groove.

[0020] Further, a limiting protrusion is provided on the contact piece, and the limiting protrusion is embedded in the installation groove.

[0021] Optionally, it further includes a fastener, and the fastener fastens and connects the mounting plate and the horizontal portion to the housing. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a leakage protector according to an embodiment of the present invention;

[0023] Figure 2 It is a partial cross-sectional view of a leakage protector according to Embodiment 1 of the present invention;

[0024] Figure 3 It is a partial cross-sectional view of the leakage protector according to Embodiment 1 of the present invention from another perspective;

[0025] Figure 4 It is a cross-sectional view of a waterproof pad according to Embodiment 1 of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the assembled waterproof pad and contact piece according to Embodiment 1 of the present invention;

[0027] Figure 6 Schematic diagram of the mounting plate according to Embodiment 1 of the present invention;

[0028] Figure 7 Partial cross-sectional view of the leakage protector according to Embodiment 2 of the present invention;

[0029] Figure 8 Cross-sectional view of the waterproof pad according to Embodiment 2 of the present invention;

[0030] Description of reference numerals:

[0031] Housing 100, first through hole 101, step 1011, riveting post 102;

[0032] Button member 200, hook 201;

[0033] Mounting plate 300, second through hole 301, riveting hole 302;

[0034] Waterproof pad 400, support body 401, inclined portion 4011, horizontal portion 4012, assembly 402, boss 4021, mounting groove 4022;

[0035] Contact piece 500, limit protrusion 501;

[0036] PCB board 600, contact point 601. Detailed implementation manners

[0037] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] In order to better understand the above technical solutions, the exemplary embodiments of the present invention will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention can be more thoroughly understood and the scope of the present invention can be fully conveyed to those skilled in the art.

[0039] The leakage protector of the present invention can be a leakage protection plug or a leakage protection socket. For example Figure 1 As shown, it is a leakage protection plug, and this leakage protector can be externally connected to various electrical appliances as loads.

[0040] The leakage protector may include a housing and a movement assembly, and the existing movement assembly structure can be adopted for the movement assembly. The main feature of the present invention lies in the structural design of the waterproof pad and the cooperation mode between the waterproof pad, the button member and the contact piece.

[0041] Embodiment 1

[0042] The following refers to Figure 1 and Figure 6 to describe the leakage protector according to Embodiment 1 of the present invention.

[0043] As Figure 1 shown, the leakage protector according to an embodiment of the present invention includes a housing 100, a button member 200, a mounting plate 300, a waterproof pad 400, a contact piece 500 and a PCB board 600. Among them, the mounting plate 300, the waterproof pad 400, the contact piece 500 and the PCB board 600 are all arranged in the housing 100; the PCB board 600 is part of the movement assembly; the button member 200 is arranged on the housing 100, and it may include two buttons, one is a reset button and the other is a test button. When the reset button is pressed, the power connection of the load circuit and the power connection of the auxiliary switch circuit in the movement assembly can be completed through the cooperation between the contact piece 500 on the reset button and the PCB board 600; when the test button is pressed, the power disconnection of the load circuit and the power disconnection of the auxiliary switch circuit in the movement assembly can be completed through the cooperation between the contact piece 500 on the test button and the PCB board 600.

[0044] Specifically, in combination with Figure 2, the housing 100 defines a first through hole 101 that penetrates the inside and the outside of the housing 100; among them, in order to correspond to the reset button and the test button, two first through holes 101 are provided here. The PCB board 600 is installed inside the housing 100, and the PCB board 600 has contacts 601; among them, contacts 601 are provided corresponding to both the reset button and the test button. The button member 200 is inserted into the first through hole 101 and its top protrudes outward from the housing 100; the part of the button member 200 protruding outward from the housing 100 is used for the user to press the button member 200. The mounting plate 300 is arranged inside the housing 100, and the mounting plate 300 defines a second through hole 301; the waterproof pad 400 has a support body 401 and an assembly body 402, the assembly body 402 is inserted into the second through hole 301 and is movable between a first position and a second position, the top of the assembly body 402 contacts or connects to the bottom of the button member 200, the support body 401 includes an inclined portion 4011 and a horizontal portion 4012, the inclined portion 4011 is arranged to incline downward, its top connects to the outer side wall of the assembly portion 402, its bottom connects to the horizontal portion 4012, and the horizontal portion 4012 is hermetically arranged between the mounting plate 300 and the housing 100; the contact piece 500 is inserted on the assembly body 402 and its contact surface protrudes from the assembly body 402 to be adapted to contact the contact 601; when the button member 200 is pressed, the assembly body 402 moves from the first position to the second position, and the contact piece 500 is connected to the contact 601; when the button member 200 is released, the assembly body 402 moves from the second position to the first position, and the contact piece 500 is disconnected from the contact 601. That is to say, when the button member 200 is pressed, the assembly body 402 moves downward, that is, from the first position to the second position, and the contact piece 500 and the contact 601 are connected; then, the button member 200 is released, and the inclined portion 4011 of the support body 401 provides a reset force for the assembly body 402, so that the assembly body 402 moves upward and returns to the initial position when the button member 200 is not pressed, that is, from the second position to the first position. Furthermore, the mounting plate 300 is used to fix the waterproof pad 400 inside the housing 100. The setting of the waterproof pad 400 can seal the first through hole 101 and play a protective role. Of course, corresponding to the reset button and the test button of the button member 200, the waterproof pad 400 can be provided with two assembly bodies 402 and two support bodies 401, and the two support bodies 401 are connected into a plane body through the horizontal portion 4012. To prevent the interference between the two buttons, the middle part of the plane body can be fixed on the housing 100. In addition, the contact piece 500 can move along with the movement of the assembly body 402, so that the contact piece 500 can contact or disengage from the contact 601. Among them, a contact piece 500 is inserted on each of the two assembly bodies 402, and different contact pieces 500 are in contact with different contacts 601 on the PCB board 600.

[0045] Thus, for the leakage protector according to the embodiments of the present invention, through the design of the support body 401 and the assembly body 402 on the waterproof pad 400, when the button member 200 is pressed, the contact surface of the contact piece 500 driven by the assembly body 402 contacts the contact point 601 to close the circuit. After the button member 200 is released, the support body 401 of the waterproof pad 400 has an elastic restoring force to drive the assembly body 402 to drive the contact piece 500 to disconnect from the contact point 601, and the button member 200 returns to its original position. In this way, the contact piece 500 is assembled with the waterproof pad 400, making the overall structure simple and the assembly convenient. The waterproof pad 400 has the functions of resetting and protection, and can reliably realize the reset process of the leakage protector.

[0046] Optionally, a step 1011 is formed on the inner peripheral surface of the first through hole 101, and a hook 201 is formed on the outer peripheral surface of the button member 200. The hook 201 can be clamped on the step 1011, so that the button member 200 can move downward when pressed and move upward when reset, preventing the button member 200 from detaching from the first through hole 101.

[0047] According to some embodiments of the present invention, in combination with Figure 4 , the waterproof pad 400 can be an elastic member, and the top surface of the elastic member can seal the first through hole 101 as a whole to prevent water droplets and dust from entering the movement assembly through the second through hole 301. Further, the waterproof pad 400 is provided with elasticity to ensure that when the button member 200 is pressed down, the support body 401 elastically deforms downward, and when the button member 200 is released, the support body 401 resets under the action of its own restoring force, and at the same time provides an elastic restoring force for the assembly body 402 and the button member 200, so that the button member 200 returns to its initial position.

[0048] According to a further embodiment of the present invention, a convex platform 4021 protrudes upward from the top end of the assembly body 402, and the convex platform 4021 contacts the bottom end of the button member 200. The convex platform 4021 has a certain thickness, which provides a certain buffering force when the button member 200 is pressed down, ensuring that the contact point 601 is not crushed due to excessive pressing force, which affects the reliability of the connection between the contact piece 500 and the contact point 601.

[0049] According to a further embodiment of the present invention, the assembly body 402 is in a columnar shape, and the support body 401 is annularly arranged on the outer peripheral surface of the assembly body 402. In this way, it is ensured that the support body 401 can preferably provide a restoring force to the assembly body 402 and the button member 200. Further, the support body 401 and the assembly body 402 are integrally formed. The two support bodies 401 and the two assembly bodies 402 corresponding to the two buttons are also integrally formed, so that the waterproof pad 400 forms a whole. During assembly, the waterproof pad 400 can be installed between the first through hole 101 and the mounting plate 300.

[0050] According to a further embodiment of the present invention, the assembly 402 has a mounting groove 4022 with an opening facing downwards, and the contact piece 500 is inserted into the mounting groove 4022; in this way, when the contact piece 500 is inserted into the assembly 402, the contact surface of the contact piece 500 protrudes from the assembly 402 and can be in contact with the contact point 601.

[0051] Optionally, a limiting protrusion 501 is provided on the contact piece 500, and the limiting protrusion 501 is fitted into the mounting groove 4022. Combining Figure 3 , the limiting protrusion 501 can be a barb provided on the contact piece 500, and the barb is embedded in the inner wall of the mounting groove 4022, so that the contact piece 500 can be stably assembled with the assembly 402. In this way, the contact piece 500 is pre-assembled on the waterproof pad 400. During assembly, it is only necessary to install the waterproof pad 400 in the housing 100.

[0052] According to some embodiments of the present invention, combining Figure 1 and Figure 6 , it further includes a fastener, and the fastener tightly connects the mounting plate 300 and the horizontal part 4012 to the housing 100. Among them, the fastener is a riveting post 102 on the housing 100, and the riveting post 102 rivets the mounting plate 300 and the horizontal part 4012 to the housing 100 through the riveting hole 302 on the mounting plate 300, so that the horizontal part 4012 closely fits between the inner wall of the housing 100 and the mounting plate 300 for sealing.

[0053] Embodiment Two

[0054] Next, combining Figure 7 and Figure 8 describe the leakage protector according to Embodiment Two of the present invention.

[0055] The leakage protector according to the embodiment of the present invention has an overall structure and principle that are substantially the same as those of Embodiment One, and the same parts will not be described again. The difference is that, in this embodiment, the assembly 402 and the key member 200 are integrally formed. That is to say, the assembly 402 is inserted into the first through hole 101 and its top protrudes out of the housing to form the key member 200. When pressing the top of the assembly 402, the assembly 402 can be directly driven to move downwards. Thus, the key member 200 and the waterproof pad 400 form a whole, reducing the number of parts, reducing the separate installation of the key member 200 and the waterproof pad 400, further simplifying the assembly, and reducing the cost. Therefore, in this embodiment, during assembly, the top of the assembly 402 is inserted into the first through hole 101, then the bottom of the assembly 402 and the contact piece 500 therein are inserted into the second through hole 301, and then the housing 100, the horizontal part 4012 and the mounting plate 300 are fastened together through the riveting post 102 of the housing 100 and the riveting hole 302 of the mounting plate 300, and the installation of the key part, the contact piece part, the protection part and the reset part can be completed.

[0056] In summary, through the structural design of the support body 401 on the waterproof pad 400 of the leakage protector of the present invention, the waterproof pad 400 has the functions of protection and reset, simplifying the assembly procedure; by assembling the contact piece 500 on the assembly body 402, the assembly procedure is further simplified; by integrating the button member 200 with the waterproof pad 400, the assembly procedure is further simplified.

[0057] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0058] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0059] In the present invention, unless otherwise clearly defined and limited, the terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0060] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0061] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0062] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A leakage protector, characterized in that, Comprising: A housing, a button member, a mounting plate, a waterproof pad, a contact piece, and a PCB board; The housing defines a first through hole that penetrates the inside and the outside of the housing; The PCB board is mounted inside the housing, and the PCB board has contacts; The button member is inserted into the first through hole and its top protrudes towards the outside of the housing; The mounting plate is arranged inside the housing, and a second through hole is defined on the mounting plate; The waterproof pad has a support body and an assembly body. The assembly body is inserted into the second through hole and is movable between a first position and a second position. The top end of the assembly body contacts or connects to the bottom end of the button member. The support body includes an inclined portion and a horizontal portion. The inclined portion is arranged to incline downwards, its top end connects to the outer side wall of the assembly body, and its bottom end connects to the horizontal portion. The horizontal portion is sealingly arranged between the mounting plate and the housing; The contact piece is inserted on the assembly body and its contact surface protrudes from the assembly body to be adapted to contact the contacts; When the button member is pressed, the assembly body moves from the first position to the second position, and the contact piece is connected to the contacts; when the button member is released, the assembly body moves from the second position to the first position, and the contact piece is disconnected from the contacts; The assembly body and the button member are integrally formed.

2. The residual current operated protective device according to claim 1, characterized in that: The waterproof pad is an elastic member.

3. The leakage protector according to claim 2, characterized in that: A boss protrudes upwards from the top end of the assembly body, and the boss contacts the bottom end of the button member.

4. The leakage protector according to claim 1, characterized in that: The assembly body is in a columnar shape, and the support body is arranged around the outer peripheral surface of the assembly body.

5. The leakage protector according to claim 1, characterized in that: The assembly body has a mounting groove with an opening facing downwards, and the contact piece is inserted into the mounting groove.

6. The leakage protector according to claim 5, characterized in that: A limiting protrusion is provided on the contact piece, and the limiting protrusion is fitted into the mounting groove.

7. The leakage protector according to claim 1, characterized in that: It further includes a fastener, and the fastener fastens and connects the mounting plate and the horizontal portion to the housing.

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