CN216562995U - Chip type surface-mounted fuse resistor with temperature fuse - Google Patents
Chip type surface-mounted fuse resistor with temperature fuse Download PDFInfo
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- CN216562995U CN216562995U CN202122991394.XU CN202122991394U CN216562995U CN 216562995 U CN216562995 U CN 216562995U CN 202122991394 U CN202122991394 U CN 202122991394U CN 216562995 U CN216562995 U CN 216562995U
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Abstract
The utility model discloses a chip type surface-mount fusing resistor with a temperature fuse, which comprises a hollow porcelain body, wherein the inner wall of one side of the hollow porcelain body is fixedly connected with a first lead, a fixing box for protecting and inflaming retarding the fuse is arranged outside the hollow porcelain body, the outer wall of the hollow porcelain body is brushed with an inflaming retarding coating, and a hollow iron cap is fixedly arranged on one side of the inner wall of the hollow porcelain body. When the temperature fuse is used, the contact piece and the first lead introduce current, the current is transmitted through the temperature fuse and the resistance fuse, and the temperature fuse and the resistance fuse are connected in series on the first lead, so that when any one of the temperature fuse and the resistance fuse is fused, a circuit is disconnected, the mobile phone charger is efficiently powered off and protected, internal parts of the mobile phone charger are prevented from being damaged due to overhigh temperature, and safety accidents such as combustion and explosion caused by overhigh temperature can be effectively avoided.
Description
Technical Field
The utility model relates to the technical field of fuses, in particular to a surface-mounted fusing resistor of a chip type thermal fuse.
Background
The fuse is also called as a current fuse, and the IEC127 standard defines it as a fuse link, which mainly plays a role of overload protection, and when the fuse is correctly arranged in a circuit, the fuse will automatically fuse and cut off current when the current abnormally rises to a certain height and heat, so as to protect the circuit from safe operation.
Chinese patent is granted No. CN208819800U, announced date 2019 year 05 month 03 day, specifically is temperature fuse, which comprises a housin, casing upper portion is equipped with the through-hole, and the bottom opening places the fuse structure in the casing, and the fuse structure includes the fuse, connects to detain, the first lead wire that the fuse upper end stretches out is through connecing knot and line connection, and the fuse bottom is the cone, and the first lead wire of cone connects to detain through the centre and line connection, and the casing is filled up with silicone grease, and the opening is sealed through the apron. The novel wire connecting buckle has the advantages of novel structure, ingenious design, reasonable layout, compact wire and connecting buckle, safety and reliability.
Lack the fire-retardant protection architecture of fuse among the above-mentioned prior art scheme, fuse because of the high temperature fusing back, thereby can produce the condition that higher temperature leads to inside burning, and lack the fire-retardant structure of efficient, the condition that electrical apparatus burning damaged can appear, and then the production of potential safety hazard has been increased, simultaneously in the use of carrying out the fuse, the condition that the temperature is too high but burn the fuse for reaching can appear, and then lead to the too high condition of multiclass electrical apparatus such as cell-phone battery temperature easily, thereby cause the damage of multiclass electrical apparatus internals such as cell-phone battery, and then bring inconvenience for the user, simultaneously on the market at present after having scribbled the insulating varnish more with first lead wire insert on the circuit board that will drill, it takes time and labor again, consequently, need to propose a chip type has the surface adhesion type fusing resistance of temperature fuse.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a surface mount fuse resistor with a chip-type thermal fuse, in which a resistive fuse and the thermal fuse are cooperatively used, if a current passes through the device but does not reach the fuse current of the fuse resistor, the current will accumulate to a high temperature after a long time of passing through the device, and reach the temperature of the thermal fuse, the thermal fuse will open the circuit to prevent the temperature from continuously rising to reach the ignition point, thereby preventing the ignition, combustion and even explosion, and at the same time, the device will sense the ambient temperature, and the fuse current will break the circuit when reaching the fuse temperature of the thermal fuse, thereby increasing the safety of the small electrical appliance, and solving the problems in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: chip type has surface mounting type fusing resistance of temperature fuse, including the cavity porcelain body, one side fixedly connected with cavity iron hat of cavity porcelain body, and the outer wall fixedly connected with temperature fuse lead wire of cavity iron hat, this one end fixedly connected with second lead wire of temperature fuse, the outer wall fixedly connected with resistance fuse of cavity iron hat, and the fixed iron hat of one end fixedly connected with of resistance fuse, the first lead wire of one side fixedly connected with of fixed iron hat, and one side of fixed iron hat is provided with the contact piece.
In a preferred embodiment, the exterior of the hollow porcelain body is provided with a protective shell, and the protective shell is formed by curing and pressing epoxy resin.
In a preferred embodiment, one end of the thermal fuse body is fixedly connected with the outer wall of the hollow iron cap, and the other end of the thermal fuse body is fixedly connected with one end of the second lead.
In a preferred embodiment, the resistance fuse is wound on the outer wall of the hollow porcelain body, and two ends of the resistance fuse are fixedly connected with the outer walls of the hollow iron cap and the fixed iron cap respectively.
In a preferred embodiment, the thermal fuse body forms a series structure with the resistance fuse through a hollow iron cap, and the resistance fuse is connected with the first lead through a fixed iron cap.
The utility model has the technical effects and advantages that:
through first lead wire, the setting of resistance fuse and temperature fuse body, contact piece and first lead wire introduce the electric current, and carry out the transmission of electric current through temperature fuse and resistance fuse, and because temperature fuse and resistance fuse establish ties on first lead wire, and then can all break off the circuit at any fusing of temperature fuse and resistance fuse, thereby carry out high-efficient power-off protection with the cell-phone charger, prevent that the too high inside part that leads to of charger temperature from damaging, can effectively avoid incident such as the burning explosion that the too high temperature arouses simultaneously.
Drawings
FIG. 1 is a schematic view of a front cross-section structure of a hollow porcelain body according to the present invention
FIG. 2 is a schematic view of the internal structure of the hollow porcelain body of the present invention.
The reference signs are: 1. a hollow porcelain body; 2. a first lead; 3. a hollow iron cap; 4. a temperature fuse body; 5. fixing an iron cap; 6. a contact piece; 7. a resistance fuse; 8. a second lead.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The chip type surface-mount fuse type fusing resistor with the temperature fuse shown in fig. 1 and 2 comprises a hollow porcelain body 1, wherein a hollow iron cap 3 is fixedly connected to one side of the hollow porcelain body 1, a temperature fuse body 4 is fixedly connected to the outer wall of the hollow iron cap 3, and a second lead 8 is fixedly connected to one end of the temperature fuse body 4;
a protective shell is arranged outside the hollow porcelain body 1 and is formed by curing and pressing epoxy resin;
one end of the temperature fuse body 4 is fixedly connected with the outer wall of the hollow iron cap 3, and the other end of the temperature fuse body 4 is fixedly connected with one end of the second lead 8;
the implementation mode is specifically as follows: after the fuse is assembled, the fuse is placed in a fixed shell, then epoxy resin is poured in, the epoxy resin is packaged in an insulating mode by using a molding die press, then cooling, curing and molding are carried out, the temperature fuse body 4 is arranged in the hollow porcelain body 1, when the resistance fuse 7 is wound outside the hollow porcelain body 1, the first lead wire 2 and the second lead wire 8 at two ends are respectively flattened, the first lead wire 2 and the second lead wire 8 are both lead wires, the lead wires are flattened and molded to be used as a bonding pad 6 welded on a circuit board, and a Surface Mount Technology (SMT) element integrating a combined fuse resistor and the temperature fuse which is not subjected to compression molding up to now is used, meanwhile, the outer layer of the hollow porcelain body 1 can be a winding fuse resistor or a membrane resistor, when the temperature fuse body 4 or the resistance fuse 7 is fused in use, the epoxy resin can be fused in the fixed shell, therefore, the temperature fuse body 4 is prevented from burning outwards after being melted, the burning point of the epoxy resin is very high, the epoxy resin can burn only when reaching 530-540 ℃, the epoxy resin belongs to the flame-retardant organic resin, and further the flame retardance can be effectively realized, so that the use safety of the fuse is improved.
According to the chip-type surface-mount fuse-type fusing resistor with a thermal fuse shown in fig. 1 and 2, a resistance fuse 7 is fixedly connected to the outer wall of the hollow iron cap 3, a fixed iron cap 5 is fixedly connected to one end of the resistance fuse 7, a first lead 2 is fixedly connected to one side of the fixed iron cap 5, and a contact piece 6 is arranged on one side of the fixed iron cap 5;
the resistance fuse wire 7 is wound on the outer wall of the hollow porcelain body 1, and two ends of the resistance fuse wire 7 are fixedly connected with the outer walls of the hollow iron cap 3 and the fixed iron cap 5 respectively;
the temperature fuse body 4 and the resistance fuse 7 form a series structure through the hollow iron cap 3, and the resistance fuse 7 is connected with the first lead 2 through the fixed iron cap 5;
the implementation mode is specifically as follows: when the ceramic body is used, current flows into the temperature fuse body 4 through the second lead 8, then the current is transmitted to the resistance fuse wire 7 through the hollow iron cap 3, the current is transmitted out of the first lead 2 through the fixed iron cap 5, and then the temperature fuse body 4 and the resistance fuse wire 7 are connected in series, so that when the ceramic body is used, the current passes through the temperature fuse body 4, the resistance fuse wire 7 outside the hollow ceramic body 1 is fused when the temperature is too high, and higher temperature can be generated when the resistance fuse wire 7 outside the hollow ceramic body 1 passes through the too high current, so that the fusing of the temperature fuse body 4 inside the hollow ceramic body 1 is influenced, the hollow ceramic body 1 can play a role in accelerating transmission temperature, the temperature fuse body 4 inside the ceramic body is more sensitive, the temperature can be judged more quickly, so that various types of electric appliances such as mobile phone batteries can be effectively protected in power failure, the fusing temperature of the temperature fuse body 4 is 150-250 ℃, the contact piece 6 is fixedly arranged outside the epoxy resin fixing shell, the contact piece 6 is formed by flattening the first lead 2 in the post processing, and the combined element can be welded on the circuit board by using the structure through the surface adhesion process.
The working principle of the utility model is as follows:
referring to the attached figure 2 of the specification, an injection molding press is used for packaging and molding the epoxy resin insulating glue, so that the epoxy resin fixing shell is protected and flame-retardant outside the hollow porcelain body 1, the ignition point of the epoxy resin is very high, the flame retardance is further facilitated, and the potential safety hazard of fire catching can be further avoided;
referring to the attached drawings 1 and 2 of the specification, a current can be introduced into a temperature fuse body 4 and a resistance fuse 7 through a pad made of a first lead 2, when the current is large, the resistance fuse 7 can generate high temperature, so that the temperature fuse body 4 is influenced to be fused, and various types of electric appliances such as mobile phone batteries and the like are protected, so that the safe use of various types of electric appliances such as mobile phone batteries and the like is ensured, and in the using process of the electric appliances, fire or explosion is possibly generated due to the faults of components, the safe use of various types of electric appliances such as mobile phone batteries and the like can be ensured by adding the components on a circuit, and the chip type can save time and labor and keep up with the era, especially a power converter used on the electric appliances, if the mobile phone batteries are short-circuited, the fuse resistance can be fused due to the excessive current, if the battery is aged or leaked, because the components can generate heat to reach the fusing temperature of the temperature fuse body 4 due to the passage of the current for a long time, the temperature fuse body 4 can be fused, so that potential safety hazards such as combustion explosion caused by short circuit, electric leakage and poor contact of electric devices such as mobile phone batteries are prevented, safety is improved, and safety protection can be performed on aged circuits and the like.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the utility model can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (5)
1. Chip type has surface mounting type fusing resistor of temperature fuse, including cavity porcelain body (1), its characterized in that: one side fixedly connected with cavity iron hat (3) of cavity porcelain body (1), and the outer wall fixedly connected with temperature fuse body (4) of cavity iron hat (3), the one end fixedly connected with second lead (8) of temperature fuse body (4), the outer wall fixedly connected with resistance fuse (7) of cavity iron hat (3), and the fixed iron hat (5) of the one end fixedly connected with of resistance fuse (7), the first lead (2) of one side fixedly connected with of fixed iron hat (5), and one side of fixed iron hat (5) is provided with contact piece (6).
2. The chip type surface mount fuse type fuse resistor as recited in claim 1, wherein: the outside of the hollow porcelain body (1) is provided with a protective shell, and the protective shell is formed by epoxy resin curing and pressing.
3. The chip type surface mount fuse type fuse resistor as recited in claim 1, wherein: one end of the temperature fuse body (4) is fixedly connected with the outer wall of the hollow iron cap (3), and the other end of the temperature fuse body (4) is fixedly connected with one end of the second lead (8).
4. The chip type surface mount fuse type fuse resistor as recited in claim 3, wherein: the resistance fuse wire (7) is wound on the outer wall of the hollow porcelain body (1), and two ends of the resistance fuse wire (7) are fixedly connected with the outer walls of the hollow iron cap (3) and the fixed iron cap (5) respectively.
5. The chip type surface mount fuse type thermal fuse blowing resistor as recited in claim 4, wherein: the temperature fuse body (4) and the resistance fuse (7) form a series structure through the hollow iron cap (3), and the resistance fuse (7) is connected with the first lead (2) through the fixed iron cap (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122991394.XU CN216562995U (en) | 2021-12-01 | 2021-12-01 | Chip type surface-mounted fuse resistor with temperature fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122991394.XU CN216562995U (en) | 2021-12-01 | 2021-12-01 | Chip type surface-mounted fuse resistor with temperature fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216562995U true CN216562995U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122991394.XU Active CN216562995U (en) | 2021-12-01 | 2021-12-01 | Chip type surface-mounted fuse resistor with temperature fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216562995U (en) |
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2021
- 2021-12-01 CN CN202122991394.XU patent/CN216562995U/en active Active
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