Thermal protector for dust collector

Abstract

The utility model discloses a thermal protector for a dust collector, which comprises a thermal protector upper shell, a bimetallic strip and insulation paper, the lower end of the thermal protector upper shell is fixedly connected with a lower bottom plate, the outer wall of the thermal protector upper shell is detachably connected with a positioning dismounting mechanism, and the bimetallic strip is positioned inside the thermal protector upper shell. According to the heat protector for the dust collector, the positioning movable block is clamped with the positioning through hole, so that the upper shell of the heat protector and the U-shaped positioning frame are quickly clamped and positioned, and then the positioning connecting plate at the bottom of the U-shaped positioning frame is fixed with components of the dust collector through bolts; when the thermal protector needs to be maintained or replaced, only the positioning movable block needs to be pressed, clamping of the positioning movable block and the positioning through hole can be completed under the action of the damper and the elastic piece at the rear end of the positioning movable block, the upper shell of the thermal protector can be disassembled and assembled, and maintenance or replacement work can be conveniently carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal protectors, in particular to a thermal protector for a vacuum cleaner. Background Art

[0002] The thermal protector of a vacuum cleaner is a protective device used to prevent the vacuum cleaner from overheating and being damaged. When the temperature of the vacuum cleaner exceeds the set value, the control circuit will automatically cut off the power supply and stop the vacuum cleaner from working to avoid failures and dangers caused by overheating. The main function of the thermal protector is to protect the internal components of the vacuum cleaner from excessive temperature and extend the service life of the vacuum cleaner. At the same time, it can also protect the safety of users and avoid accidents such as fire caused by overheating of the vacuum cleaner.

[0003] The thermal protector of a common vacuum cleaner is usually positioned by bolts when in use. When the thermal protector needs to be inspected or replaced, the process of removing the bolts may be cumbersome, increasing the difficulty of maintenance. At the same time, frequent disassembly and assembly and long-term vibration may cause wear or loosening of the bolts, thereby affecting the stability and life of the thermal protector, which has a certain adverse effect on people's use process. For this reason, we propose a thermal protector for a vacuum cleaner. Utility Model Content

[0004] Technical problem solved: In view of the deficiencies in the prior art, the utility model provides a thermal protector for a vacuum cleaner, which has the advantages of quick installation and easy disassembly, etc., through the positioning and disassembly mechanism set up, the connecting fixed block is clamped into the inner side of the positioning groove, and the positioning movable block is engaged with the positioning through hole through the action of the damper and the elastic member at its rear end, so that the upper shell of the thermal protector and the U-shaped positioning frame are quickly engaged and positioned, and then the positioning connecting plate at the bottom of the U-shaped positioning frame is fixed to the components of the vacuum cleaner by bolts. When the thermal protector needs to be repaired or replaced, it is only necessary to press the positioning movable block, and the engagement with the positioning through hole can be completed through the action of the damper and the elastic member at its rear end, and the disassembly and assembly of the upper shell of the thermal protector can be completed, which is very convenient and quick, and can be easily disassembled for repair or replacement work, which can effectively solve the problems in the background technology.

[0005] Technical solution: To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a thermal protector for a vacuum cleaner, comprising a thermal protector upper shell, a bimetallic strip and insulating paper, the lower end of the thermal protector upper shell is fixedly connected to a lower base plate, the outer wall of the thermal protector upper shell is detachably connected to a positioning and disassembly mechanism, the bimetallic strip is located inside the thermal protector upper shell, one side of the lower end of the bimetallic strip is fixedly connected to a moving contact, the other side of the lower end of the bimetallic strip is fixedly connected to an iron nail, the insulating paper is located between the thermal protector upper shell and the lower base plate, the upper end of the lower base plate is fixedly connected to a static contact, and the rear end of the thermal protector upper shell is fixedly connected to a wire.

[0006] Preferably, the positioning and disassembly mechanism includes a U-shaped positioning frame, a positioning connecting plate, a through positioning groove, a positioning through hole, a connecting fixed block, an inner movable connecting groove, a positioning movable block, a limiting movable block, a damper and an elastic member, and the positioning connecting plate is located at the lower end of the U-shaped positioning frame.

[0007] Preferably, the through positioning groove is provided on both sides of the inner wall of the U-shaped positioning frame, the positioning through hole is provided on one side of the inner wall of the through positioning groove, and the connecting and fixing blocks are located on both sides of the upper shell of the thermal protector.

[0008] Preferably, the inner movable connecting groove is opened on the inner side of the connecting and fixing block, the positioning movable block is located on the inner side of the inner movable connecting groove, the limiting movable block is located at the rear end of the positioning movable block, the damper and the elastic member are both located at the rear end of the limiting movable block and the damper is located on the inner side of the elastic member.

[0009] Preferably, the lower end of the U-shaped positioning frame is fixedly connected to the upper end of the positioning connecting plate, and one side of the connecting and fixing block is fixedly connected to both sides of the upper shell of the thermal protector.

[0010] Preferably, the rear end of the positioning movable block is fixedly connected to one side of the limiting movable block, the other side of the limiting movable block is fixedly connected to one end of the damper and the elastic member, and the other ends of the damper and the elastic member are fixedly connected to the inner side of the inner movable connecting groove.

[0011] Beneficial effects: Compared with the prior art, the utility model provides a thermal protector for a vacuum cleaner, which has the following beneficial effects: the thermal protector for a vacuum cleaner, through the positioning and disassembly mechanism, connects the fixed block card through the inner side of the positioning groove, and the positioning movable block is engaged with the positioning through hole through the action of the damper and the elastic member at its rear end, so that the upper shell of the thermal protector and the U-shaped positioning frame are quickly engaged and positioned, and then the positioning connecting plate at the bottom of the U-shaped positioning frame is fixed to the components of the vacuum cleaner by bolts. When the thermal protector needs to be repaired or replaced, it is only necessary to press the positioning movable block, and the engagement with the positioning through hole can be completed through the action of the damper and the elastic member at its rear end, and the disassembly and assembly of the upper shell of the thermal protector can be completed, which is very convenient and quick, and can be easily disassembled for repair or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of the overall structure of a thermal protector for a vacuum cleaner.

[0013] Figure 2 The utility model is a schematic diagram of the partial structural disassembly of the upper shell of the thermal protector and the positioning and disassembly mechanism of the thermal protector for a vacuum cleaner.

[0014] Figure 3 The utility model is a schematic diagram of partial structural disassembly of a positioning and disassembly mechanism in a thermal protector for a vacuum cleaner.

[0015] Figure 4 The utility model is a schematic diagram of the internal structure of the upper shell of the thermal protector of the thermal protector used for the vacuum cleaner.

[0016] In the figure: 1. upper shell of thermal protector; 2. lower base plate; 3. positioning and disassembly mechanism; 4. bimetallic strip; 5. moving contact; 6. iron nail; 7. insulating paper; 8. static contact; 9. wire; 301. U-shaped positioning frame; 302. positioning connecting plate; 303. through positioning groove; 304. positioning through hole; 305. connecting fixed block; 306. inner movable connecting groove; 307. positioning movable block; 308. limiting movable block; 309. damper; 310. elastic member. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] like Figure 1-4As shown, a thermal protector for a vacuum cleaner comprises an upper shell 1 of the thermal protector, a bimetallic strip 4 and insulating paper 7, the lower end of the upper shell 1 of the thermal protector is fixedly connected to a lower base plate 2, the outer wall of the upper shell 1 of the thermal protector is detachably connected to a positioning and disassembly mechanism 3, the bimetallic strip 4 is located inside the upper shell 1 of the thermal protector, one side of the lower end of the bimetallic strip 4 is fixedly connected to a moving contact 5, the other side of the lower end of the bimetallic strip 4 is fixedly connected to an iron nail 6, the insulating paper 7 is located between the upper shell 1 of the thermal protector and the lower base plate 2, the upper end of the lower base plate 2 is fixedly connected to a static contact 8, and the rear end of the upper shell 1 of the thermal protector is fixedly connected to a wire 9 for connection.

[0019] Furthermore, the positioning and disassembly mechanism 3 includes a U-shaped positioning frame 301, a positioning connecting plate 302, a through positioning groove 303, a positioning through hole 304, a connecting fixed block 305, an inner movable connecting groove 306, a positioning movable block 307, a limiting movable block 308, a damper 309 and an elastic member 310. The positioning connecting plate 302 is located at the lower end of the U-shaped positioning frame 301 to play a role in stabilizing the connection.

[0020] Furthermore, the through positioning groove 303 is provided on both sides of the inner wall of the U-shaped positioning frame 301, the positioning through hole 304 is provided on one side of the inner wall of the through positioning groove 303, and the connecting fixing block 305 is located on both sides of the upper shell 1 of the thermal protector to play a role in connection and positioning.

[0021] Furthermore, the inner movable connecting groove 306 is opened on the inner side of the connecting fixed block 305, the positioning movable block 307 is located on the inner side of the inner movable connecting groove 306, the limiting movable block 308 is located at the rear end of the positioning movable block 307, the damper 309 and the elastic member 310 are both located at the rear end of the limiting movable block 308 and the damper 309 is located on the inner side of the elastic member 310 to provide elastic force.

[0022] Furthermore, the lower end of the U-shaped positioning frame 301 is fixedly connected to the upper end of the positioning connecting plate 302, and one side of the connecting fixing block 305 is fixedly connected to both sides of the upper shell 1 of the thermal protector to enhance firmness.

[0023] Furthermore, the rear end of the positioning movable block 307 is fixedly connected to one side of the limiting movable block 308, and the other side of the limiting movable block 308 is fixedly connected to one end of the damper 309 and the elastic member 310, and the other ends of the damper 309 and the elastic member 310 are fixedly connected to the inner side of the inner movable connecting groove 306 to enhance stability.

[0024] Working principle: A thermal protector for a vacuum cleaner comprises an upper shell 1 of the thermal protector, a lower bottom plate 2, a positioning and disassembly mechanism 3, a bimetallic strip 4, a moving contact 5, an iron nail 6, an insulating paper 7, a static contact 8 and a wire 9. The bimetallic strip 4, the moving contact 5 and the iron nail 6 are positioned and formed by welding. The bimetallic strip 4 is located inside the upper shell 1 of the thermal protector and is positioned by welding. The static contact 8 and the lower bottom plate 2 are positioned by welding to form a bottom plate assembly. The insulating paper 7 is located between the lower bottom plate 2 and the upper shell 1 of the thermal protector as an interlayer. The upper shell 1 of the thermal protector and the lower bottom plate 2 are formed into a single finished product, which is connected to other finished products through a wire 9. The positioning and disassembly mechanism 3 is set to connect the fixing block 3. 05 is inserted into the inner side of the positioning groove 303, and the positioning movable block 307 is engaged with the positioning through hole 304 through the action of the damper 309 and the elastic member 310 at its rear end, so that the upper shell 1 of the thermal protector and the U-shaped positioning frame 301 are quickly engaged and positioned, and then the positioning connecting plate 302 at the bottom of the U-shaped positioning frame 301 is fixed to the parts of the vacuum cleaner by bolts. When the thermal protector needs to be repaired or replaced, it is only necessary to press the positioning movable block 307, and the engagement with the positioning through hole 304 can be completed through the action of the damper 309 and the elastic member 310 at its rear end, and the disassembly and assembly of the upper shell 1 of the thermal protector can be completed. It is very convenient and quick, and can be easily disassembled for maintenance or replacement.

[0025] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A thermal protector for a vacuum cleaner, comprising a thermal protector upper shell (1), a bimetallic strip (4) and insulating paper (7), characterized in that: The lower end of the thermal protector upper shell (1) is fixedly connected to a lower base plate (2); the outer wall of the thermal protector upper shell (1) is detachably connected to a positioning and disassembly mechanism (3); the bimetallic strip (4) is located inside the thermal protector upper shell (1); one side of the lower end of the bimetallic strip (4) is fixedly connected to a moving contact (5); the other side of the lower end of the bimetallic strip (4) is fixedly connected to an iron nail (6); the insulating paper (7) is located between the thermal protector upper shell (1) and the lower base plate (2); the upper end of the lower base plate (2) is fixedly connected to a static contact (8); and the rear end of the thermal protector upper shell (1) is fixedly connected to a wire (9).

2. A thermal protector for a vacuum cleaner according to claim 1, characterized in that: The positioning and disassembling mechanism (3) comprises a U-shaped positioning frame (301), a positioning connecting plate (302), a through positioning groove (303), a positioning through hole (304), a connecting and fixing block (305), an inner movable connecting groove (306), a positioning movable block (307), a limit movable block (308), a damper (309) and an elastic member (310), wherein the positioning connecting plate (302) is located at the lower end of the U-shaped positioning frame (301).

3. A thermal protector for a vacuum cleaner according to claim 2, characterized in that: The through positioning groove (303) is formed on both sides of the inner wall of the U-shaped positioning frame (301), the positioning through hole (304) is formed on one side of the inner wall of the through positioning groove (303), and the connecting and fixing blocks (305) are located on both sides of the upper shell (1) of the thermal protector.

4. A thermal protector for a vacuum cleaner according to claim 3, characterized in that: The inner movable connection groove (306) is formed on the inner side of the connection fixing block (305); the positioning movable block (307) is located on the inner side of the inner movable connection groove (306); the limiting movable block (308) is located at the rear end of the positioning movable block (307); the damper (309) and the elastic member (310) are both located at the rear end of the limiting movable block (308), and the damper (309) is located on the inner side of the elastic member (310).

5. A thermal protector for a vacuum cleaner according to claim 4, characterized in that: The lower end of the U-shaped positioning frame (301) is fixedly connected to the upper end of the positioning connection plate (302), and one side of the connection fixing block (305) is fixedly connected to both sides of the upper shell (1) of the thermal protector.

6. A thermal protector for a vacuum cleaner according to claim 5, characterized in that: The rear end of the positioning movable block (307) is fixedly connected to one side of the limiting movable block (308), the other side of the limiting movable block (308) is fixedly connected to one end of the damper (309) and the elastic member (310), and the other ends of the damper (309) and the elastic member (310) are fixedly connected to the inner side of the inner movable connection groove (306).

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