Self-recovery plug-in fuse with stable pin

Abstract

The utility model belongs to the technical field of fuses, and particularly relates to a self-recovery plug-in fuse with stable pins. The temperature sensor comprises a first pole piece, a second pole piece, a first contact pin, a second contact pin, a heat-sensitive material body, a packaging layer and a fixing ring. According to the application, the heat-sensitive material accommodating cavity, the pole piece groove and the pin hole are formed in the fixing ring; on one hand, standardized assembly of fuses can be realized, and consistency of finished products is improved; on one hand, a certain limiting effect on the pins can be achieved through the pin holes, and the situation that the stability of the internal structure of the fuse is affected when the pins are stressed is prevented.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fuse, and particularly relates to a self-recovery plug-in fuse with stable pins. BACKGROUND

[0002] The self-recovery fuse generally comprises a positive electrode, a negative electrode, a heat-sensitive conductive material and a packaging shell. The heat-sensitive conductive material is sealed in the packaging shell, and the positive and negative electrodes are electrically connected to the heat-sensitive conductive material through the packaging shell. In order to prevent the pins from affecting the electrical connection performance under stress, the positive and negative electrode sheets are arranged on the self-recovery plug-in fuse; the positive and negative electrode sheets are arranged on the heat-sensitive conductive material body, and the positive and negative pins are connected to the positive and negative electrode sheets. Although the self-recovery plug-in fuse with the positive and negative electrode sheets can stabilize the internal structure, the pins are still likely to affect the structure of the fuse, such as the distortion of the electrode sheets driven by the pins, due to the lack of fixing measures. In addition, due to the lack of fixing measures for the positive and negative electrode sheets and the pins, it is difficult to realize the standardized operation during assembly, and the distance between the two pins is difficult to be completely consistent. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the application provides a self-recovery plug-in fuse with stable pins to solve all or part of the technical problems described in the background.

[0004] The innovative idea of the application is that the positive and negative electrode sheets are arranged in the sheet grooves at both ends of the fixing ring, the positive and negative pins are connected to the positive and negative electrode sheets through the corresponding pin holes in the fixing ring, and finally the epoxy forms a packaging layer. This can avoid the influence of the pins on the stability of the internal structure under stress and improve the consistency of the product.

[0005] The solution provided by the application to solve the technical problems is as follows:

[0006] A self-recovery plug-in fuse comprises a first sheet, a second sheet, a first pin, a second pin, a heat-sensitive material body, a packaging layer and a fixing ring. The heat-sensitive material body is arranged in the fixing ring, the first sheet and the second sheet are arranged on both sides of the heat-sensitive material body, the first pin and the second pin are arranged on the first sheet and the second sheet, the packaging layer is wrapped outside the first sheet, the second sheet, the first pin, the second pin, the heat-sensitive material body and the fixing ring, and one end of the first pin and the second pin extends out of the packaging layer.

[0007] The addition of the fixing ring can realize the standardized assembly of the positive and negative electrode sheets, the positive and negative pins and the heat-sensitive material body, which is conducive to improving the consistency of the product. Meanwhile, the fixing ring can prevent the pins from affecting the stability of the internal structure of the fuse under stress.

[0008] As preferred, the fixing ring is provided with a thermosensitive material accommodating cavity, both ends of the thermosensitive material accommodating cavity are provided with an electrode slot, and both the electrode slots are provided with a pin hole.

[0009] The thermosensitive material body is arranged in the thermosensitive material accommodating cavity, the first electrode and the second electrode are respectively arranged in the corresponding electrode slot, and the first pin and the second pin are connected to the first electrode and the second electrode through the pin holes.

[0010] As preferred, the first pin and the second pin have the same mechanism, and both include a connecting part and a pin leg part; the connecting part and the pin leg part are integrally formed and the extension directions form an included angle of 135° to 142°.

[0011] As preferred, the pin hole is a square hole or a circular hole.

[0012] As preferred, the first electrode, the second electrode, the first pin, the second pin, the thermosensitive material body, the packaging layer and the fixing ring are circular structures or square structures.

[0013] Beneficial technical effects:

[0014] The application is beneficial to realize the standardization of the fuse assembly and improve the consistency of the product by arranging the fixing ring in the self-recovery fuse; and the fixing ring can limit the pin to prevent the pin from affecting the stability of the internal structure when the pin is stressed.

[0015] The technical solutions and technical effects of the application are described in detail in combination with the drawings and specific embodiments of the application. DRAWINGS

[0016] Figure 1 : front view of the self-recovery plug-in fuse with stable pin;

[0017] Figure 2 : Figure 1 A-A sectional view in the above figure;

[0018] Figure 3 : Figure 1 schematic diagram of the fixing ring in the above figure;

[0019] FIGURE DESCRIPTION:

[0020] 1-first electrode, 2-second electrode, 3-first pin, 4-second pin, 5-thermosensitive material body, 6-packaging layer, 7-fixing ring;

[0021] 31-connecting part, 32-pin leg part;

[0022] 71-thermosensitive material accommodating cavity, 72-electrode slot, 73-pin hole. DETAILED DESCRIPTION

[0023] Referring to Figures 1 to 3 The self-recovery plug fuse with stable plug includes a first pole piece 1, a second pole piece 2, a first plug 3, a second plug 4, a thermal material body 5, an encapsulation layer 6 and a fixing ring 7.

[0024] The fixing ring 7 is provided with a thermal material accommodating cavity 71, both ends of the thermal material accommodating cavity 71 are provided with a pole piece groove 72, and both the pole piece grooves 72 are provided with a plug hole 73.

[0025] The first plug 3 and the second plug 4 have the same mechanism, and both include a connecting part 31 and a pin part 32; the connecting part 31 and the pin part 32 are integrally formed and the extension direction forms an included angle between 135° and 142°. The connecting part 31 is used for connecting the pole piece, and the pin part 32 is used for forming the pin of the fuse.

[0026] The thermal material body 5 is arranged in the thermal material accommodating cavity 71, the first pole piece 1 and the second pole piece 2 are arranged in the corresponding pole piece grooves 72 respectively, and the first plug 3 and the second plug 4 are fixedly connected to the first pole piece 1 and the second pole piece 2 after passing through the corresponding plug holes 73; the encapsulation layer 6 is wrapped outside the first pole piece 1, the second pole piece 2, the first plug 3, the second plug 4, the thermal material body 5 and the fixing ring 7, and is used for forming a sealing and waterproof protection function; one end of the first plug 3 and the second plug 4 extends out of the encapsulation layer 6 to form the positive and negative pin of the fuse.

[0027] The connection between the first plug, the second plug, the first pole piece and the second pole piece can adopt welding or conductive glue bonding; and the encapsulation layer 6 can be an epoxy resin layer.

[0028] By arranging the fixing ring 7 in the fuse and arranging the thermal material accommodating cavity 71, the pole piece groove 72 and the plug hole 73 on the fixing ring 7, on one hand, the standardization assembly of the fuse can be realized, and the consistency of the finished product can be improved; on the other hand, the plug can be limited to a certain extent through the plug hole 73, so that the stability of the internal structure of the fuse is prevented from being affected when the plug is stressed.

[0029] In a variable embodiment of the present application, the plug hole 73 is a square hole.

[0030] In a variable embodiment of the present application, the first pole piece 1, the second pole piece 2, the first plug 3, the second plug 4, the thermal material body 5, the encapsulation layer 6 and the fixing ring 7 are all square structures.

[0031] The technical solutions and technical effects of the present application are described in detail above in combination with the drawings and specific embodiments, and it should be noted that other embodiments can be developed by those skilled in the art on the basis of the present application; any simple transformation and equivalent replacement without departing from the innovative concept of the present application are covered by the present application and belong to the protection scope of the present patent.

Claims

1. A self-recovery plug-in fuse with pin stabilization, characterized in that: it comprises a first pole piece (1), a second pole piece (2), a first pin (3), a second pin (4), a thermal material body (5), an encapsulation layer (6), and a fixing ring (7); the thermal material body (5) is arranged in the fixing ring (7), the first pole piece (1) and the second pole piece (2) are arranged on the two sides of the thermal material body (5) respectively, the first pin (3) and the second pin (4) are arranged on the first pole piece (1) and the second pole piece (2) respectively, the encapsulation layer (6) is wrapped outside the first pole piece (1), the second pole piece (2), the first pin (3), the second pin (4), the thermal material body (5), and the fixing ring (7), and one end of the first pin (3) and the second pin (4) extends out of the encapsulation layer (6).

2. The self-recovery plug-in fuse with pin stabilization according to claim 1, characterized in that: the fixing ring (7) is provided with a thermal material accommodating cavity (71), both ends of the thermal material accommodating cavity (71) are provided with a pole piece groove (72), and the two pole piece grooves (72) are both provided with a pin hole (73).

3. The self-recovery plug-in fuse with pin stabilization according to claim 2, characterized in that: the first pin (3) and the second pin (4) have the same mechanism and both comprise a connecting part (31) and a pin leg part (32); the connecting part (31) and the pin leg part (32) are integrally formed and extend in a direction forming an included angle of 135° to 142°.

4. The self-recovery plug-in fuse with pin stabilization according to claim 2, characterized in that: the pin hole (73) is a square hole or a circular hole.

5. The self-recovery plug-in fuse with pin stabilization according to claim 1, characterized in that: the first pole piece (1), the second pole piece (2), the first pin (3), the second pin (4), the thermal material body (5), the encapsulation layer (6), and the fixing ring (7) are all circular structures or square structures. ​ ​ ​ ​ ​ ​ ​

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