Shell of leakage protector

Abstract

The utility model belongs to the technical field of leakage protectors, and particularly relates to a leakage protector shell, which comprises a base provided with a storage chamber, a plurality of wiring chambers and a plurality of wiring holes; each wiring assembly comprises a wiring base, a wiring board and a locking screw, the wiring base can be movably arranged in the wiring cavity in the Y direction, one end of the wiring board is installed in the wiring cavity, the other end of the wiring board is located in the wiring base, and the locking screw is in threaded connection with the wiring base and abuts against the wiring board; the upper cover is mounted on the base; the wiring chamber is internally provided with a fixing groove and two limiting grooves, the bottom of the wiring board is provided with a connecting block, the connecting block is clamped and matched with the fixing seat, the two sides of the wiring board along the X direction are provided with connecting raised lines, and the connecting raised lines are clamped with the limiting grooves in an adaptive manner; the beneficial effects of the utility model are that the two end faces of the wire holder and the wiring board used for abutting against the wire can be kept parallel to each other, the contact area of the wire is increased, and the connection firmness of the wire is improved.

Description

Technical Field

[0001] This utility model belongs to the field of leakage current protection device technology, and in particular relates to a leakage current protection device housing. Background Technology

[0002] A residual current device (RCD), also known as a residual current circuit breaker, is a protective electrical appliance used to prevent electric shock and electrical fires when a short circuit to ground occurs due to damage to the insulation of a circuit or appliance. It is generally installed on the socket circuit of each household's distribution box.

[0003] Currently, most residual current devices (RCDs) have terminals installed inside their housings for connecting to external circuits. These terminals typically consist of a terminal block, a terminal block, and a locking screw. The terminal block is electrically connected to the internal components of the RCD. Rotating the locking screw causes relative displacement between the terminal block and the terminal block, clamping the wires and thus connecting them to the external circuit.

[0004] In existing technologies, most junction boxes are not installed stably enough inside the housing of residual current devices (RCDs), and are prone to shaking and shifting. When operators turn the locking screws to clamp the wires on the junction box and the terminal block, although the wires are clamped and connected, the contact area between the wires and the junction box may be small, resulting in an unstable electrical connection and affecting safety. Utility Model Content

[0005] The purpose of this utility model is to provide a leakage current protection device housing to address the aforementioned technical problems.

[0006] In view of this, the present invention provides a housing for a residual current device (RCD), comprising:

[0007] The base has a storage chamber, several wiring chambers, and several wiring holes.

[0008] Several wiring assemblies, each wiring assembly including a terminal block, a terminal plate and a locking screw, the terminal block being movably disposed in the wiring chamber along the Y direction, one end of the terminal plate being installed in the wiring chamber and the other end being located in the terminal block, the locking screw being threadedly connected to the terminal block and abutting against the terminal plate;

[0009] The top cover is mounted on the base and is used to cover the storage chamber and the wiring chamber;

[0010] The wiring chamber is equipped with a fixing groove and two limiting grooves. The bottom of the wiring board is equipped with a connecting block, which is engaged with the fixing seat. The wiring board is equipped with connecting protrusions on both sides along the X direction, which are engaged with the limiting grooves.

[0011] Furthermore, the junction box includes:

[0012] The fixing part includes a first main body and a second main body with an integral structure;

[0013] The wiring section is integrally connected to the first main body and located inside the wiring socket;

[0014] The connecting protrusion is disposed on the first body, and the connecting block is disposed on the second body.

[0015] Furthermore, a limiting protrusion is provided on the wiring part to limit the relative movement of the terminal block and the wiring part in the Y direction.

[0016] Furthermore, several first grooves are provided on the side of the wiring part away from the locking screw.

[0017] Furthermore, the terminal block has a second groove that is directly opposite to the first groove.

[0018] Furthermore, several limiting ribs are also provided on the inner wall of the wiring chamber.

[0019] Furthermore, the top cover is provided with an insert strip, and the base is provided with a slot, with the insert strip and the slot engaging in a plug-in fit.

[0020] The beneficial effects of this utility model are:

[0021] When relative displacement occurs between the terminal block and the terminal board, the terminal board is not prone to shaking or shifting, thus ensuring that the two end faces of the terminal block and the terminal board used to contact the wire remain parallel to each other, increasing the contact area between the wire and the terminal block and the terminal board, and effectively improving the connection strength of the wire. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the base structure in this utility model;

[0024] Figure 3 This is a schematic diagram of the wiring assembly in this utility model;

[0025] Figure 4 This is a schematic diagram of the wiring assembly from another perspective in this utility model;

[0026] The markings in the diagram are as follows:

[0027] 1. Base; 11. Storage chamber; 12. Wiring chamber; 13. Wiring hole; 14. Fixing groove; 15. Limiting groove; 2. Terminal block; 21. Second groove; 3. Terminal board; 31. Connecting block; 32. Connecting protrusion; 33. First body; 34. Second body; 35. Wiring part; 36. Limiting protrusion; 37. First groove; 4. Locking screw; 5. Top cover. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0030] Example 1:

[0031] This embodiment provides a residual current device (RCD) housing, including:

[0032] The base 1 is provided with a storage chamber 11, a number of wiring chambers 12 and a number of wiring holes 13;

[0033] Several wiring assemblies, each wiring assembly including a terminal block 2, a terminal block 3 and a locking screw 4, the terminal block 2 is movably disposed in the wiring chamber 12 along the Y direction, one end of the terminal block 3 is installed in the wiring chamber 12 and the other end is located in the terminal block 2, and the locking screw 4 is threadedly connected to the terminal block 2 and abuts against the terminal block 3;

[0034] Upper cover 5 is installed on base 1 and is used to cover storage chamber 11 and wiring chamber 12;

[0035] The wiring chamber 12 is provided with a fixing groove 14 and two limiting grooves 15. The bottom of the wiring plate 3 is provided with a connecting block 31, which is engaged with the fixing seat. The wiring plate 3 is provided with connecting protrusions 32 on both sides along the X direction, which are engaged with the limiting grooves 15.

[0036] Furthermore, the junction box 3 includes:

[0037] The fixing part includes a first body 33 and a second body 34, which are integral structures;

[0038] Wiring part 35 is integrally connected to the first main body 33 and located inside the terminal block 2;

[0039] The connecting protrusion 32 is disposed on the first body 33, and the connecting block 31 is disposed on the second body 34.

[0040] In this technical solution, the housing 11 of the base 1 is used to install electronic components related to the leakage current protection device, the wiring chamber 12 is used to install wiring components, and the top cover 5 is placed on the base 1 for sealing and is connected and fixed by fasteners.

[0041] Both the terminal block 2 and the terminal board 3 are made of metal. The terminal block 2 is a cylindrical structure mounted on the terminal portion 35 of the terminal board 3. The locking screw 4 is threaded onto the terminal block 2, and the tail of the locking screw 4 abuts against the terminal portion 35, thus allowing the terminal board 3 to support the terminal block 2 and the locking screw 4. The gap between the terminal block 2 and the terminal portion 35 is used for wiring. After the wire is inserted into this gap, rotating the locking screw 4 causes the terminal block 2 to move along the Y direction, reducing the gap between the terminal block 2 and the terminal portion 35. The wire is then clamped between the terminal block 2 and the terminal portion 35 to complete the wiring.

[0042] The fixing part of the terminal block 3 is composed of a first main body 33 and a second main body 34, and the whole is in the shape of an "L". The connecting block 31 is integrally connected to the second main body 34 and is located vertically between the second main body 34. The connecting protrusion 32 is integrally connected to both sides of the first main body 33 along the X direction.

[0043] The terminal block 3 is installed and fixed in the wiring chamber 12 by inserting the connecting block 31 into the fixing groove 14 of the wiring chamber 12, and inserting the two connecting protrusions 32 into the two limiting grooves 15 respectively. The snap-fit ​​engagement between the connecting block 31 and the fixing groove 14, and between the connecting protrusions 32 and the limiting grooves 15, ensures that the terminal block 3 is securely installed in the wiring chamber 12. When relative displacement occurs between the terminal block 2 and the terminal block 3, the terminal block 3 is less likely to wobble or shift, thus ensuring that the two end faces of the terminal block 2 and the terminal block 3 used to contact the wire remain parallel to each other. This increases the contact area between the wire and the terminal block 2 and the terminal block 3, effectively improving the connection strength of the wire.

[0044] Example 2:

[0045] This embodiment provides a leakage current protection device housing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] Furthermore, a limiting protrusion 36 is provided on the wiring part 35, which is used to limit the relative movement of the terminal block 2 and the wiring part 35 in the Y direction.

[0047] In this technical solution, the limiting protrusion 36 abuts against the terminal block 2 to prevent the terminal block 2 from separating from the wiring part 35 of the terminal block 3 in the Z direction, thereby effectively improving the connection stability between the terminal block 2 and the terminal block 3.

[0048] Example 3:

[0049] This embodiment provides a leakage current protection device housing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] Furthermore, the wiring portion 35 has several first grooves 37 on the side away from the locking screw 4.

[0051] Furthermore, the terminal block 2 has a second groove 21 that is directly opposite to the first groove 37.

[0052] By setting the first groove 37, the contact area between the connector 35 and the wire is increased. By setting the second groove 21, the contact area between the terminal block 2 and the wire is increased. This enhances the friction between the connector 35 and the terminal block 2 when clamping the wire, effectively improving the connection firmness of the wire.

[0053] Example 4:

[0054] This embodiment provides a leakage current protection device housing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0055] Furthermore, several limiting ribs are also provided on the inner wall of the wiring chamber 12.

[0056] In this technical solution, the limiting ribs abut against both sides of the terminal block 2 along the X direction. The limiting ribs restrict the displacement of the terminal block 2 along the X direction, thereby enhancing the movement stability of the terminal block 2 in the wiring chamber 12 and preventing the offset and shaking of the terminal block 2 from affecting the connection firmness of the wire. It is highly practical.

[0057] Example 5:

[0058] This embodiment provides a leakage current protection device housing, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0059] Furthermore, the top cover 5 is provided with an insert strip, and the base 1 is provided with a slot, with the insert strip and the slot being inserted and engaged.

[0060] The insertion and connection of the insert and slot guide the installation of the top cover 5 on the base 1, ensuring that the top cover 5 fits snugly against the base 1, keeping the top cover 5 and the base 1 flat, reducing the connection gap and improving the sealing performance.

[0061] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A housing for a residual current device (RCD), characterized in that, include: The base (1) is provided with a storage chamber (11), a plurality of wiring chambers (12) and a plurality of wiring holes (13); A plurality of wiring assemblies, the wiring assembly including a terminal block (2), a terminal block (3) and a locking screw (4), the terminal block (2) being movably disposed in a wiring chamber (12) along the Y direction, one end of the terminal block (3) being installed in the wiring chamber (12) and the other end being located in the terminal block (2), the locking screw (4) being threadedly connected to the terminal block (2) and abutting against the terminal block (3); The upper cover (5) is mounted on the base (1) and is used to cover the storage chamber (11) and the wiring chamber (12); The wiring chamber (12) is provided with a fixing groove (14) and two limiting grooves (15). The bottom of the wiring plate (3) is provided with a connecting block (31). The connecting block (31) is engaged with the fixing seat. The wiring plate (3) is provided with connecting protrusions (32) on both sides along the X direction. The connecting protrusions (32) are engaged with the limiting grooves (15).

2. The housing of a residual current device according to claim 1, characterized in that, The terminal block (3) includes: The fixing part includes a first main body (33) and a second main body (34) of integral structure; Wiring part (35), which is integrally connected to the first body (33) and located inside the terminal block (2); The connecting protrusion (32) is disposed on the first body (33), and the connecting block (31) is disposed on the second body (34).

3. The housing of a residual current device according to claim 2, characterized in that, The wiring portion (35) is also provided with a limiting protrusion (36), which is used to limit the relative movement of the wiring base (2) and the wiring portion (35) in the Y direction.

4. The housing of a residual current device according to claim 2, characterized in that, The wiring portion (35) has several first grooves (37) on the side away from the locking screw (4).

5. The housing of a residual current device according to claim 4, characterized in that, The terminal block (2) has a second groove (21) that is directly opposite to the first groove (37).

6. The housing of a residual current device according to claim 1, characterized in that, The inner wall of the wiring chamber (12) is also provided with several limiting ribs.

7. The housing of a residual current device according to claim 1, characterized in that, The upper cover (5) is provided with an insert, and the base (1) is provided with a slot, and the insert and the slot are inserted into each other.

Images