Overload protector structure

Abstract

An overload protector structure relates to the technical field of overload protectors and comprises a shell and a pin, a roundabout structure is arranged on the butt joint edge of an upper shell and a lower shell, and the roundabout structure comprises a first protruding block arranged on the edge of the upper shell and a second protruding block arranged on the edge of the lower shell and staggered with the first protruding block. The first protruding block and the second protruding block extend along the edges of the first protruding block and the second protruding block to form a closed structure connected end to end, a first groove is formed in the edge, corresponding to the first protruding block, of the lower shell, a second groove is formed in the edge, corresponding to the second protruding block, of the upper shell, and each pin comprises an extending section and a bending section. After the upper shell and the lower shell are connected in a covering mode, the first protruding block is clamped into the first groove, the second protruding block is clamped into the second groove, two roundabout sealing structures are formed, the sealing performance of the seam is greatly improved, the pins are bent, welding points of the pins and the wires are adjusted, it is guaranteed that the wires can fall into a placement position without being bent after being welded, and the welding efficiency is improved. And wires are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of overload protectors, in particular to an overload protector structure which is convenient for molding and coating. Background Art

[0002] In order to prevent the circuit from burning out due to exceeding its rated carrying current, an overload protector is usually connected to the circuit, and the overload protector is connected to the circuit through the pins in the overload protector. At present, the pins of the overload protector are usually made of metal sheet structures. Common materials include copper, iron, aluminum, etc. The overload protector can be connected to the circuit by welding the sheet pins and wires. In order to improve the safety and aesthetics of the circuit, insulating materials are also coated on the welding points by injection molding. Usually, the welded overload protector is placed in the lower mold. The lower mold has a cavity for accommodating the overload protector and a placement position for placing the wires extending outward from the cavity.

[0003] However, the current injection molding effect on the welding point is poor, and a large number of unqualified products are prone to appear. On the one hand, the shell used for the overload protector is split, and the two shells are only connected and fixed by screws, resulting in a gap at the connection of the two shells. During the injection molding process, the glue can easily penetrate into the shell through the gap, thereby damaging the internal components of the overload protector, causing the overload protector to lose its overload protection function. On the other hand, the pin length of the overload protector is limited and is in the form of a straight sheet. After the wire is welded to the pin, it is necessary to bend the wire outward so that the wire can be inserted into the wire placement position of the injection mold. In view of the narrow space for folding in the injection mold, and the difficulty in folding some thicker wires, it is necessary to fold the wire with great effort each time, resulting in low production efficiency. In addition, forced folding and mold injection molding can easily damage the wire, further reducing product quality.

[0004] Therefore, in view of the above defects, it is necessary to optimize the existing overload protector structure to improve the quality of the product after injection molding. Utility Model Content

[0005] The purpose of the utility model is to provide an overload protector structure, which can significantly improve the connection sealing of the shell, avoid the infiltration of glue and cause product quality problems, and is conducive to the welding of wires. After welding, the wires do not need to be bent to make them fall into the placement position without damaging the wires.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An overload protector structure includes a shell and a pin, the shell includes an upper shell and a lower shell connected and fixed by a locking member, a detour structure is arranged on the edge where the upper shell and the lower shell are butted against each other, the detour structure includes a first protrusion arranged on the edge of the upper shell and a second protrusion arranged on the edge of the lower shell and staggered with the first protrusion, the first protrusion and the second protrusion extend along their respective edges to form a closed structure connected end to end, a first groove is arranged on the edge of the lower shell corresponding to the first protrusion, and a second groove is arranged on the edge of the lower shell corresponding to the second protrusion. A second groove is provided on the edge of the upper shell, and the pin includes an extension section extending outward from the shell and a bending section bent from the extension section in the thickness direction of the shell; on the one hand, after the upper shell and the lower shell are covered and connected, the first protrusion is inserted into the first groove, and the second protrusion is inserted into the second groove, thereby forming two circuitous sealing structures, which greatly improves the airtightness of the joint between the upper shell and the lower shell; on the other hand, the pin is bent to adjust the welding point of the pin and the wire, thereby ensuring that the wire can fall into the placement position without bending after welding, thereby avoiding damage to the wire;

[0008] Furthermore, the first protrusion is located in the outer circle of the second protrusion, and the protrusion height of the first protrusion is greater than the concave depth of the first groove, so that a circle of fine grooves that do not penetrate the interior of the shell is present at the joint between the upper shell and the lower shell, and a rubber strip is arranged in the fine groove; thereby, the sealing of the detour structure is further improved by means of the rubber strip in the fine groove;

[0009] Furthermore, a sealant is applied to the outer side of the rubber strip; the sealant is used to further compress the rubber strip and fill the unfilled part of the rubber strip to further improve the sealing of the joint;

[0010] Furthermore, the position where the pin is connected to the housing has a notch that is concave from both sides of the pin to the center; the notch is used to better seal the pin and the housing, thereby improving the sealing of the pin;

[0011] Furthermore, a sealant is applied around the notch to further improve the connection sealing between the pin and the housing;

[0012] Furthermore, a diamond-shaped hole is provided on the pin, and the direction of a diagonal line on the diamond-shaped hole is the same as the bending direction of the bending section; the provision of the diamond-shaped hole is not only convenient for fixed installation, but also convenient for the bending process of the pin.

[0013] The beneficial effects of the utility model are:

[0014] 1) After the upper shell and the lower shell are covered and connected, the first protrusion is inserted into the first groove, and the second protrusion is inserted into the second groove, thereby forming a two-way circuitous sealing structure, which greatly improves the sealing performance of the joint between the upper shell and the lower shell;

[0015] 2) A notch is provided on the pin at a position corresponding to the joint, which is concave from both sides of the pin to the center, so that the pin and the housing are better sealed and connected by the notch, thereby improving the sealing of the pin;

[0016] 3) Bend the pins to adjust the welding points between the pins and the wires, and then ensure that the wires can fall into place without bending after welding, so as to avoid damaging the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front structural schematic diagram of the overload protector structure according to one embodiment of the utility model;

[0018] Figure 2 It is a side structural diagram of the overload protector structure according to one embodiment of the utility model;

[0019] Figure 3 It is a front structural schematic diagram of the edge winding structure of the upper shell and the lower shell that are butted against each other according to an embodiment of the utility model;

[0020] Figure 4 yes Figure 3 A schematic cross-sectional view of the meandering structure in a direction perpendicular to the extension direction of the meandering structure;

[0021] Figure 5 It is a schematic diagram of the structure of the pins described in one embodiment of the utility model;

[0022] In the figure:

[0023] 1. Shell; 11. Upper shell; 12. Lower shell; 2. Locking screw; 31. First protrusion; 32. Second protrusion; 33. Rubber strip; 34. Sealant; 4. Pin; 41. Extension section; 42. Bending section; 5. Notch; 6. Diamond-shaped hole. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms used to indicate orientation or positional relationships are based on the orientation or positional relationships 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.

[0025] The following describes the principle and features of the present invention in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0026] like Figure 1 and Figure 2 As shown, in one embodiment of the utility model, the overload protector structure includes a housing 1 and a pin 4;

[0027] The housing 1 includes an upper housing 11 and a lower housing 12 connected and fixed by a locking member. In this embodiment, the locking member is a locking screw 2. Figure 3 and 4 As shown, a detour structure is provided on the edge where the upper shell 11 and the lower shell 12 are butted against each other, and the detour structure includes a first protrusion 31 provided on the edge of the upper shell 11 and a second protrusion 32 provided on the edge of the lower shell 12 and staggered with the first protrusion 31. The first protrusion 31 and the second protrusion 32 extend along their respective edges to form a closed structure connected end to end. Corresponding to the first protrusion 31, a first groove is provided on the edge of the lower shell 12, and corresponding to the second protrusion 32, a second groove is provided on the edge of the upper shell 11. In this way, after the upper shell 11 and the lower shell 12 are covered and connected, the first protrusion 31 is inserted into the first groove, and the second protrusion 32 is inserted into the second groove, thereby forming two detour sealing structures to improve the airtightness of the joint between the upper shell 11 and the lower shell 12. Furthermore, the first protrusion 31 is located on the outer circle of the second protrusion 32, and the protrusion height of the first protrusion 31 is greater than the concave depth of the first groove, so that a circle of fine grooves that do not penetrate the interior of the shell 1 exists at the joint of the upper shell 11 and the lower shell 12, and a rubber strip 33 is arranged in the fine groove, and a sealant 34 is applied on the outer side of the rubber strip 33 to further improve the sealing of the joint;

[0028] Continue as Figure 2 As shown, the pin 4 includes an extension section 41 extending outward from the housing 1 and a bending section 42 bent from the extension section 41 toward the thickness direction of the housing 1. In order to improve the connection sealing between the pin 4 and the housing 1, in this embodiment, as shown in FIG. Figure 5 As shown, the pin 4 is flattened (i.e., the bending section 42 is not bent) for illustration, so as to better show the structure on the pin 4. A notch 5 is provided at the position where the pin 4 is connected to the housing 1, which is concave from both sides of the pin 4 to the center, and a sealant is applied around the notch 5. In addition, in order to facilitate the bending of the pin 4, part of the circular hole on the pin 4 is modified into a diamond hole 6, and the direction of a diagonal line on the diamond hole 6 is the same as the bending direction of the bending section 42, so that there are fewer metal connection parts on the diagonal line, which is convenient for bending.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An overload protector structure, comprising a housing and pins, wherein the housing comprises an upper housing and a lower housing connected and fixed by a locking member, characterized in that: A detour structure is arranged on the edge where the upper shell and the lower shell are butted against each other, the detour structure comprising a first protrusion arranged on the edge of the upper shell and a second protrusion arranged on the edge of the lower shell and staggered with the first protrusion, the first protrusion and the second protrusion respectively extend along their respective edges to form a closed structure connected end to end, a first groove is arranged on the edge of the lower shell corresponding to the first protrusion, a second groove is arranged on the edge of the upper shell corresponding to the second protrusion, the pin comprises an extension section extending outward from the inside of the shell and a bending section bent from the extension section toward the thickness direction of the shell.

2. The overload protector structure according to claim 1, characterized in that: The first protrusion is located on the outer circle of the second protrusion, and the protruding height of the first protrusion is greater than the concave depth of the first groove, so that a circle of fine grooves that do not penetrate the interior of the shell are present at the joint between the upper shell and the lower shell, and a rubber strip is arranged in the fine grooves.

3. The overload protector structure according to claim 2, characterized in that: Apply sealant on the outer side of the adhesive strip.

4. The overload protector structure according to claim 1, characterized in that: The position where the pin is connected to the shell is a notch that is concave from both sides of the pin to the center.

5. The overload protector structure according to claim 4, characterized in that: Apply sealant around the gap.

6. The overload protector structure according to claim 1, characterized in that: A diamond-shaped hole is arranged on the pin, and the direction of a diagonal line on the diamond-shaped hole is the same as the bending direction of the bending section.

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