阅读说明：本技术 一种具有新型密封结构的温度保险丝及制备方法 (Temperature fuse with novel sealing structure and preparation method ) 是由 钟亚保 高连忠 罗宁 项伟荣 于 2021-07-05 设计创作，主要内容包括：本发明公开了一种具有新型密封结构的温度保险丝及制备方法,其中,温度保险丝包括保护外壳、封盖、易熔合金、助熔断剂和两个引脚；保护外壳的一端开口设置；封盖设置于保护外壳的开口处,以封闭保护外壳的开口；两个引脚与封盖通过注塑形成一个整体,且一端设置于保护外壳内,另一端设置于保护外壳外；易熔合金设置于保护外壳内,且设置于两个引脚位于保护外壳内的一端之间；助熔断剂设置于保护外壳内,且包裹易熔合金。本发明通过设计用于封闭保护外壳的封盖,并将封盖与引脚通过注塑形成为一体,相比于现有技术,节省了环氧树脂密封胶烘烤固化的时间,大大提高了生产的效率及品质,具有较高的推广应用价值。(The invention discloses a temperature fuse with a novel sealing structure and a preparation method thereof, wherein the temperature fuse comprises a protective shell, a sealing cover, fusible alloy, a fluxing fusing agent and two pins; one end of the protective shell is provided with an opening; the sealing cover is arranged at the opening of the protective shell to seal the opening of the protective shell; the two pins and the sealing cover form a whole through injection molding, one end of each pin is arranged in the protective shell, and the other end of each pin is arranged outside the protective shell; the fusible alloy is arranged in the protective shell and is arranged between one ends of the two pins in the protective shell; the fusing assistant agent is arranged in the protective shell and wraps the fusible alloy. According to the invention, the sealing cover for sealing the protective shell is designed, and the sealing cover and the pins are integrated through injection molding, so that compared with the prior art, the time for baking and curing the epoxy resin sealant is saved, the production efficiency and quality are greatly improved, and the high-speed sealing device has high popularization and application values.)

1. The temperature fuse with the novel sealing structure is characterized by comprising a protective shell, a sealing cover, fusible alloy, a fluxing agent and two pins; wherein the content of the first and second substances,

one end of the protective shell is provided with an opening;

the cover is arranged at the opening of the protective shell to close the opening of the protective shell;

the two pins and the sealing cover form a whole through injection molding, one end of each pin is arranged in the protective shell, and the other end of each pin is arranged outside the protective shell;

the fusible alloy is arranged in the protective shell and is arranged between one ends, located in the protective shell, of the two pins;

the fusing assistant agent is arranged in the protective shell and wraps the fusible alloy.

2. The thermal fuse with the novel sealing structure as claimed in claim 1, wherein the protective casing is made of plastic material.

3. The thermal fuse with the novel sealing structure according to claim 1, wherein the protective housing is made of a ceramic material.

4. The thermal fuse having a novel sealing structure according to claim 1, wherein said cover is made of epoxy resin.

5. The thermal fuse with the novel sealing structure according to claim 1, wherein the cover is connected with the protective housing by means of ultrasonic welding.

6. The thermal fuse with the novel sealing structure according to claim 1, wherein the surfaces of both the pins are provided with an insulating coating.

7. The thermal fuse having a novel sealing structure according to claim 1, wherein a flange is formed on the cover;

the cover is connected with the protective shell through the flange, and the flange is arranged outside the protective shell.

8. The thermal fuse with the novel sealing structure according to claim 1, wherein a flange is formed on the cover, and a groove matched with the flange is formed on the protective shell;

the cover is connected with the protective shell through the flange and the groove, and the flange is arranged in the protective shell.

9. A method for preparing a temperature fuse with a novel sealing structure according to any one of claims 1 to 8, wherein the method comprises the following steps:

placing the two pins in a mold, and performing injection molding to form the injection molded sealing cover and the two pins into a whole;

welding a fusible alloy at one end of the two pins;

injecting a fusing assistant agent into the protective shell;

and assembling the cover and the two pins which are integrally formed into a protective shell to obtain the temperature fuse.

10. The method of claim 9, wherein the step of assembling the cover and the two pins into a protective housing to form the thermal fuse comprises:

assembling the cover and the two pins into a protective shell;

and carrying out sealing welding on the sealing cover and the protective shell through ultrasonic welding to obtain the temperature fuse.

Technical Field

The invention relates to the technical field of fuses, in particular to a temperature fuse with a novel sealing structure and a preparation method thereof.

Background

The thermal fuse, also called thermal fuse, is a safety overheat protection component. The temperature fuse is generally installed in an easily-heating electric appliance product, and when the electric appliance product has an overheat fault and the temperature exceeds an abnormal temperature, the temperature fuse can be automatically fused, so that a power supply is cut off, and the electric appliance product is prevented from causing a fire.

At present, a temperature fuse in the market comprises a protective shell, pins, a fluxing agent and a fusible alloy, and an epoxy resin sealant is used for sealing the protective shell. However, the curing of the epoxy resin sealant needs to put the thermal fuse into an oven for baking, which has a long baking time, seriously affects the production efficiency, and results in that the high-efficiency production cannot be performed.

Therefore, how to provide a thermal fuse with a new structure to increase the production efficiency thereof has become one of the important issues in the art.

The above information is given as background information only to aid in understanding the present disclosure, and no determination or admission is made as to whether any of the above is available as prior art against the present disclosure.

Disclosure of Invention

The invention provides a temperature fuse with a novel sealing structure and a preparation method thereof, and aims to overcome the defects of the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

in a first aspect, an embodiment of the present invention provides a temperature fuse with a novel sealing structure, where the temperature fuse includes a protective housing, a sealing cover, a fusible alloy, a fluxing agent, and two pins; wherein the content of the first and second substances,

one end of the protective shell is provided with an opening;

the cover is arranged at the opening of the protective shell to close the opening of the protective shell;

the two pins and the sealing cover form a whole through injection molding, one end of each pin is arranged in the protective shell, and the other end of each pin is arranged outside the protective shell;

the fusible alloy is arranged in the protective shell and is arranged between one ends, located in the protective shell, of the two pins;

the fusing assistant agent is arranged in the protective shell and wraps the fusible alloy.

Further, in the temperature fuse with the novel sealing structure, the protective shell is made of a plastic material.

Further, in the temperature fuse with the novel sealing structure, the protective shell is made of a ceramic material.

Further, in the thermal fuse having the novel sealing structure, the cap is made of epoxy resin.

Further, in the temperature fuse with the novel sealing structure, the sealing cover is connected with the protective shell in an ultrasonic welding mode.

Further, in the temperature fuse with the novel sealing structure, the surfaces of the two pins are provided with insulating coatings.

Further, in the temperature fuse with the novel sealing structure, a flange is formed on the cover;

the cover is connected with the protective shell through the flange, and the flange is arranged outside the protective shell.

Further, in the temperature fuse with the novel sealing structure, a flange is formed on the sealing cover, and a groove matched with the flange is formed on the protective shell;

the cover is connected with the protective shell through the flange and the groove, and the flange is arranged in the protective shell.

In a second aspect, an embodiment of the present invention provides a method for manufacturing a thermal fuse, for manufacturing a thermal fuse having a novel sealing structure as described in the first aspect, where the method includes:

placing the two pins in a mold, and performing injection molding to form the injection molded sealing cover and the two pins into a whole;

welding a fusible alloy at one end of the two pins;

injecting a fusing assistant agent into the protective shell;

and assembling the cover and the two pins which are integrally formed into a protective shell to obtain the temperature fuse.

Further, in the method for manufacturing a thermal fuse, the step of assembling the cover formed as a whole with the two pins into a protective housing to manufacture the thermal fuse includes:

assembling the cover and the two pins into a protective shell;

and carrying out sealing welding on the sealing cover and the protective shell through ultrasonic welding to obtain the temperature fuse.

According to the temperature fuse with the novel sealing structure and the preparation method thereof, the sealing cover for sealing the protective shell is designed, and the sealing cover and the pins are integrated through injection molding, so that compared with the prior art, the time for baking and curing the epoxy resin sealant is saved, the production efficiency and quality are greatly improved, and the temperature fuse with the novel sealing structure and the preparation method thereof have higher popularization and application values.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic cross-sectional view of a thermal fuse with a novel sealing structure according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a thermal fuse with a novel sealing structure according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a thermal fuse with a novel sealing structure according to an embodiment of the present invention;

fig. 4 is a schematic flow chart of a method for manufacturing a thermal fuse according to a second embodiment of the present invention.

Reference numerals:

the fuse comprises a pin 1, a protective shell 2, a sealing cover 3, a fusing assistant 4 and a fusible alloy 5.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below 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.

In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the referred devices or elements must have the specific orientations, be configured to operate in the specific orientations, and thus are not to be construed as limitations of the present invention.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Example one

In view of the above-mentioned drawbacks of the conventional thermal fuse structure, the applicant of the present invention is based on practical experience and professional knowledge that is abundant over many years in the design and manufacture of such products, and is engaged in the application of theory to actively make research and innovation, so as to hopefully create a technology capable of solving the drawbacks of the prior art, so that the thermal fuse is more efficiently produced. After continuous research and design and repeated trial production and improvement, the invention with practical value is finally created.

Referring to fig. 1 to 3, an embodiment of the invention provides a thermal fuse with a novel sealing structure, where the thermal fuse includes two pins 1, a protective housing 2, a sealing cover 3, a fuse promoter 4, and a fusible alloy 5; wherein the content of the first and second substances,

one end of the protective shell 2 is provided with an opening;

the cover 3 is arranged at the opening of the protective shell 2 to close the opening of the protective shell 2;

the two pins 1 and the seal cover 3 are formed into a whole through injection molding, one end of each pin is arranged in the protective shell 2, and the other end of each pin is arranged outside the protective shell 2;

the fusible alloy 5 is arranged in the protective shell 2 and is arranged between one ends of the two pins 1 in the protective shell 2;

the fusing assistant agent 4 is arranged in the protective shell 2 and wraps the fusible alloy 5.

It should be noted that the core of this embodiment lies in designing a sealing cover 3 to replace the existing epoxy resin sealant to seal the opening of the protective housing 2, so that the epoxy resin sealant cannot be used for sealing, thereby saving the baking and curing time of the epoxy resin sealant and greatly improving the production efficiency. In addition, in addition to the cover 3, the present embodiment also integrates the two pins 1 with the cover 3 by injection molding, so as to ensure the sealing performance of the cover 3. Specifically, in the process of injection molding of the sealing cover 3, two pins 1 need to be placed in a mold, so that after demolding and cooling, the two pins 1 are fixedly inserted into the sealing cover 3.

In this embodiment, the protective housing 2 is made of a plastic material or a ceramic material. Of course, other materials are also possible, and this embodiment is not an example.

In the present embodiment, the cover 3 is made of epoxy resin. Although the cover 3 is still made of epoxy resin, the difference between the present embodiment and the existing epoxy resin sealant sealing process is that the cover 3 can be prepared in advance, so that the baking and curing time of the epoxy resin sealant is not required to wait when the thermal fuse is assembled.

In the present embodiment, the cover 3 is connected to the protective housing 2 by means of ultrasonic welding.

The protective case 2 is a transparent case that is resistant to high temperature. Specifically, ultrasonic hot-melt sealing welding is performed by using ultrasonic equipment to effectively weld edges on the periphery and the outside where the protective shell 2 and the seal cover 3 are in contact.

Preferably, the surfaces of the two pins 1 are both provided with an insulating cover, which plays a role of insulating protection and mainly aims at one end of the two pins 1 exposed in the air. The insulating outer cover can be made of materials with different protection grades.

In one embodiment, the cover 3 is formed with a flange;

the cover 3 is connected to the protective housing 2 via the flange, and the flange is arranged outside the protective housing 2, as shown in fig. 2.

In another embodiment, not only the cover 3 but also the protective casing 2 is formed with a flange to which a groove is fitted;

the cover 3 is connected to the protective housing 2 via the flange and the recess, and the flange is arranged in the protective housing 2, as shown in fig. 3.

According to the temperature fuse with the novel sealing structure, the sealing cover for sealing the protective shell is designed, and the sealing cover and the pins are integrated through injection molding, so that compared with the prior art, the time for baking and curing the epoxy resin sealant is saved, the production efficiency and quality are greatly improved, and the temperature fuse with the novel sealing structure has higher popularization and application values.

Example two

Referring to fig. 4, a second embodiment of the present invention provides a method for manufacturing a thermal fuse, for manufacturing the thermal fuse with a novel sealing structure according to the first embodiment, the method includes:

s201, placing the two pins in a mold, and performing injection molding to form the injection molded sealing cover and the two pins into a whole.

S202, welding the fusible alloy at one end of the two pins.

And S203, injecting a fusing assistant agent into the protective shell.

And S204, assembling the cover and the two pins which are integrally formed into a protective shell to obtain the temperature fuse.

Preferably, the step S204 further includes:

assembling the cover and the two pins into a protective shell;

and carrying out sealing welding on the sealing cover and the protective shell through ultrasonic welding to obtain the temperature fuse.

According to the temperature fuse preparation method provided by the embodiment of the invention, the sealing cover for sealing the protective shell is designed, and the sealing cover and the pins are integrated through injection molding, so that compared with the prior art, the time for baking and curing the epoxy resin sealant is saved, the production efficiency and quality are greatly improved, and the method has higher popularization and application values.

The foregoing description of the embodiments has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same elements or features may also vary in many respects. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.

Example embodiments are provided so that this disclosure will be thorough and will fully convey the scope to those skilled in the art. Numerous details are set forth, such as examples of specific parts, devices, and methods, in order to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In certain example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises" and "comprising" are intended to be inclusive and therefore specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed and illustrated, unless explicitly indicated as an order of performance. It should also be understood that additional or alternative steps may be employed.

When an element or layer is referred to as being "on" … … "," engaged with "… …", "connected to" or "coupled to" another element or layer, it can be directly on, engaged with, connected to or coupled to the other element or layer, or intervening elements or layers may also be present. In contrast, when an element or layer is referred to as being "directly on … …," "directly engaged with … …," "directly connected to" or "directly coupled to" another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship of elements should be interpreted in a similar manner (e.g., "between … …" and "directly between … …", "adjacent" and "directly adjacent", etc.). As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region or section from another element, component, region or section. Unless clearly indicated by the context, use of terms such as the terms "first," "second," and other numerical values herein does not imply a sequence or order. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

Spatially relative terms, such as "inner," "outer," "below," "… …," "lower," "above," "upper," and the like, may be used herein for ease of description to describe a relationship between one element or feature and one or more other elements or features as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below … …" can encompass both an orientation of facing upward and downward. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted.