Recyclable ntc thermistor

Abstract

The application discloses a recyclable NTC thermistor, which comprises a shell, a viscose cover plate, a sensitive element, a connecting end, a movable ring, a tray, an anti-explosion groove, a movable plate, a pressing plate, a wedge-shaped plate and a rotating plate; the installation assembly of the pressing plate pressing the sensitive element is formed through the wedge-shaped plate and the rotating plate; the cooperation assembly of the rotating plate being separated from the wedge-shaped plate and the pressing plate guarantees the pressing effect on the sensitive element and makes the tray separated from the shell; through pressing the movable ring, the movable plate and the wedge-shaped plate are moved downwards; on one hand, the wedge-shaped plate is moved downwards, the pressing plate is moved along the movable groove and is pressed on the outer surface of the sensitive element; on the other hand, the movable plate is moved downwards, the rotating plate is moved downwards and contacts the fixed plate, the rotating plate moving downwards is rotated, the pressing plate is pressed, the wedge-shaped plate and the rotating plate jointly act on the top and bottom of the pressing plate, so that the pressing plate is stably pressed on the outer surface of the sensitive element, and the sensitive element is fixed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of thermistor structures, in particular to a recyclable NTC thermistor. BACKGROUND

[0002] The NTC thermistor is made of metal oxide semiconductor materials such as manganese oxide, nickel oxide and cobalt oxide, and the materials have the negative temperature coefficient characteristic that the resistance value decreases with the temperature rise. The PTC thermistor is made of ceramic materials such as barium titanate and lead titanate, and the resistance value increases with the temperature rise. In addition, there are metal thermistors such as platinum and nickel, alloy materials and organic materials such as polyimide.

[0003] The existing NTC thermistor is prepared by sealing the sensitive element through the cooperation of the shell and the adhesive cover plate. When the sensitive element needs to be replaced, the shell needs to be damaged to take out and replace the sensitive element, which is inconvenient to operate.

[0004] Therefore, the application provides a recyclable NTC thermistor. SUMMARY

[0005] The application aims to provide a recyclable NTC thermistor to solve the problems in the background.

[0006] To achieve the above-mentioned purpose, the application provides a recyclable NTC thermistor, which comprises a shell and an adhesive cover plate arranged on the shell, a sensitive element is arranged in the shell, and the sensitive element is connected with a connecting end penetrating through the adhesive cover plate through a lead strip; an active ring is clamped between the shell and the adhesive cover plate, a tray is slidingly matched with the bottom of the shell, an anti-explosion groove is formed in the tray, an active plate connected with the active ring is arranged on the tray, a pressing plate is clamped between the side surface of the active plate and the sensitive element, a wedge-shaped plate is arranged below the active ring and is in clamping connection with the top end of the pressing plate, a rotating plate is rotatably connected to the active plate and is in pressing connection with the bottom end of the pressing plate; an installation assembly is arranged, when the active plate descends, the pressing plate is pressed against the sensitive element through the wedge-shaped plate and the rotating plate; a matching assembly is arranged, when the sensitive element is replaced, the rotating plate is separated from the pressing plate, the pressing effect on the sensitive element is ensured, and the tray is separated from the shell first, and then the replacement is gradually carried out.

[0007] Preferably, the installation assembly comprises a fixed plate fixedly connected with the shell and matched with the rotating plate, the shell is internally provided with a movable slot movably matched with the pressing plate, the movable plate is provided with a rotating slot rotatably connected with the rotating plate, and the bottom of the shell is provided with an insertion slot insertionally matched with the tray.

[0008] Preferably, the matching assembly comprises two symmetrically distributed and obliquely distributed insertion rods, the insertion rods are elastic rods, the top of the two insertion rods is fixedly connected with the movable ring, and the two insertion rods are respectively inserted into the top of the movable plate and the wedge-shaped plate.

[0009] Preferably, the rotating plate is provided with an elastic member connected with the rotating slot, which helps to ensure the effect of the rotating plate on the pressing plate.

[0010] Preferably, the explosion-proof slot is circumferentially distributed and provided with three, and the bottom of the explosion-proof slot is adhered with a protective film to prevent moisture from entering the protective film.

[0011] Preferably, the sensitive element has a laminated structure, and one of the pressing plates is located at a position corresponding to the position where the adhesive tape is adhered.

[0012] Preferably, the end of the rotating plate is at an inclined angle, and the side of the rotating plate is fixedly connected with a protruding rod matched with the pressing of the fixed plate.

[0013] A preparation method of a recyclable NTC thermistor, which utilizes the recyclable NTC thermistor, and specifically comprises the following steps.

[0014] S1, insert the movable plate into the movable slot, and insert the tray into the insertion slot;

[0015] S2, place the sensitive element into the shell, connect the wedge-shaped plate with the movable ring through one of the insertion rods, then adhere the movable ring to the movable plate, and insert and fix the movable ring to the movable plate through the other insertion rod;

[0016] S3, then, install the adhesive cover plate, adhere the adhesive cover plate to the top of the movable ring and drive the movable ring to move along the inside of the shell, so that the wedge-shaped plate moves downward and the rotating plate rotates, thereby pressing the top and bottom positions of the pressing plate and pressing the pressing plate against the outer surface of the sensitive element, completing the preparation and putting into use;

[0017] S4, when there is excessive heat accumulation, the bottom of the tray is expanded along the explosion-proof slot or the sensitive element needs to be replaced, the tray is moved along the insertion slot, and the movable plate is separated from the movable ring.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] By pressing the movable ring, the movable plate and the wedge-shaped plate are moved downward. On the one hand, the wedge-shaped plate moves downward, so that the pressing plate moves along the movable groove and is pressed against the outer surface of the sensitive element. On the other hand, the movable plate moves downward, thereby driving the rotating plate to move downward and contact the fixed plate, so that the rotating plate that moves downward is rotated, the pressing plate is pressed, the wedge-shaped plate and the rotating plate jointly act on the top and bottom of the pressing plate, and thus the pressing plate is stably pressed against the outer surface of the sensitive element, thereby fixing the sensitive element. This installation method is simple and convenient to operate.

[0020] When the sensitive element inside the shell needs to be replaced, the tray is moved away from the insertion slot, and the tray is also separated from the shell. Since the wedge-shaped plate presses against the top of the pressing plate and the top of the sensitive element is clamped, the sensitive element is pulled out from the bottom, so that the sensitive element inside can be taken out, and the sensitive element inserted from the bottom of the shell to the top of the shell is reinserted. The top of the sensitive element is first inserted into the fixed wedge-shaped plate through the inclined surface, and this operation is convenient and facilitates the replacement of the tray. The movable plate is moved along the movable groove, so that the movable plate is connected and fixed with the movable ring again through the insertion rod. This disassembly method is simple and does not need to damage the shell to complete the replacement, and has strong applicability. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 It is a schematic diagram of the shell cross section and the internal structure of the shell;

[0023] Figure 3 It is a schematic diagram of the structure of the sensitive element separated from the shell;

[0024] Figure 4 It is a schematic diagram of the structure of the tray separated from the insertion slot;

[0025] Figure 5 It is a schematic diagram of the structure of the adhesive cover plate separated from the movable ring and the shell;

[0026] Figure 6 It is a schematic diagram of the structure of the movable plate, the pressing plate and the wedge-shaped plate separated from the movable groove;

[0027] Figure 7 It is a schematic diagram of the structure of the movable ring separated from the two insertion rods;

[0028] Figure 8 It is a schematic diagram of the structure of the pressing plate and the wedge-shaped block away from the movable plate;

[0029] Figure 9The schematic view of the cooperation structure of the rotating plate and the movable plate of the present application.

[0030] In the figure: 1, shell; 2, adhesive cover plate; 3, sensitive element; 4, connecting end; 5, movable ring; 6, tray; 7, explosion-proof groove; 8, movable plate; 9, pressing plate; 10, wedge-shaped plate; 11, rotating plate; 12, fixed plate; 13, movable groove; 14, rotating groove; 15, insertion groove; 16, insertion rod; 17, elastic member; 18, protruding rod. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0032] Please refer to Figures 1-9 The present application provides a recyclable NTC thermistor, which comprises a shell 1 and an adhesive cover plate 2 arranged on the shell 1. The shell 1 is internally provided with a sensitive element 3. The sensitive element 3 is connected with a connecting end 4 penetrating through the adhesive cover plate 2 by a lead strip. The recyclable NTC thermistor further comprises a movable ring 5 in pressing cooperation with the adhesive cover plate 2, a tray 6 in sliding cooperation with the bottom of the shell 1, an explosion-proof groove 7 formed on the tray 6, a movable plate 8 connected with the movable ring 5 in pressing cooperation, a pressing plate 9 arranged between the side surface of the movable plate 8 and the sensitive element 3, a wedge-shaped plate 10 arranged below the movable ring 5 and in clamping cooperation with the top end of the pressing plate 9, and a rotating plate 11 rotatably connected with the bottom end of the pressing plate 9 and arranged on the movable plate 8. When the installation assembly is lowered, the pressing plate 9 is pressed against the sensitive element 3 by the wedge-shaped plate 10 and the rotating plate 11. When the cooperation assembly is used to replace the sensitive element 3 or when the capacitor explodes, the rotating plate 11 is separated from the pressing plate 9, so that the pressing effect on the sensitive element 3 is ensured, the tray 6 is separated from the shell 1 first, and then the replacement is gradually performed. The edge of the movable ring 5 is tightly clamped with the inner wall of the shell 1.

[0033] A preparation method of the recyclable NTC thermistor, which utilizes the recyclable NTC thermistor described above. The specific method comprises the following steps.

[0034] S1, the movable plate 8 is inserted into the movable groove 13, and the tray 6 is inserted into the insertion groove 15, so as to block the bottom of the shell 1.

[0035] S2, the sensitive element 3 is placed into the shell 1, the wedge-shaped plate 10 is connected with the movable ring 5 through one of the insertion rods 16, then the movable ring 5 is attached to the movable plate 8, and the movable ring 5 is fixedly inserted with the movable plate 8 through the other insertion rod 16.

[0036] S3, then, install the adhesive cover plate 2, the adhesive cover plate 2 is adhered to the top of the movable ring 5 and drives the movable ring 5 to move along the inside of the shell 1, so that the wedge-shaped plate 10 is downward, the rotating plate 11 is rotated, so that the top and bottom of the pressing plate 9 is pressed, and the pressing plate 9 is pressed on the outer surface of the sensitive element 3, the preparation is completed, and it is put into use;

[0037] The installation assembly comprises a fixed plate 12 fixedly connected with the shell 1 and matched with the rotating plate 11, an active groove 13 matched with the pressing plate 9 is formed in the inside of the shell 1, a rotating groove 14 rotationally connected with the rotating plate 11 is formed in the active plate 8, and an insertion groove 15 matched with the tray 6 is formed in the bottom of the shell 1;

[0038] The matching assembly comprises two symmetrically distributed and obliquely distributed insertion rods 16, the insertion rods 16 are elastic rods, the top of the two insertion rods 16 is fixedly connected with the movable ring 5, and the two insertion rods 16 are respectively inserted into the top of the active plate 8 and the wedge-shaped plate 10;

[0039] In the application, the active plate 8 and the wedge-shaped plate 10 are moved downward by pressing the movable ring 5 (the active plate 8 moves a small distance and does not make the tray 6 separate from the insertion groove 15, and the tray 6 and the shell 1 are in a sealing device), on the one hand, the wedge-shaped plate 10 moves downward, the inclined surface of the wedge-shaped plate 10 makes the pressing plate 9 move along the active groove 13, and the pressing plate 9 is pressed on the outer surface of the sensitive element 3, on the other hand, the active plate 8 moves downward, drives the rotating plate 11 to move downward, the rotating plate 11 moving downward contacts the fixed plate 12, and under the limitation of the fixed plate 12, the rotating plate 11 moving downward is rotated, so that the end of the rotating plate 11 presses the pressing plate 9, the wedge-shaped plate 10 and the rotating plate 11 jointly act on the top and bottom of the pressing plate 9, so that the pressing plate 9 is stably pressed on the outer surface of the sensitive element 3, and the sensitive element 3 is fixed;

[0040] And the top of the shell 1 is blocked by the adhesive cover plate 2, and the adhesive cover plate 2 is fixedly inserted with the two connecting ends 4;

[0041] The oblique insertion rod 16 makes the wedge-shaped plate 10 and the active plate 8 move downward synchronously;

[0042] S4, when the heat accumulation is too much and cannot be cooled in time, the tray 6 is opened along the explosion-proof groove 7 (under the action of air pressure), or the sensitive element 3 needs to be replaced, the tray 6 is moved along the insertion groove 15, and the active plate 8 is separated from the movable ring 5.

[0043] In the present application, when an explosion occurs, the inside of the shell 1 is closed, and the huge pressure causes the bottom of the tray 6 to burst, the bottom of the tray 6 breaks along the plug-in explosion-proof groove 7, thereby releasing the pressure inside the shell 1, at the same time, the pressure causes the tray 6 to move away from the plug-in groove 15, the movable plate 8 moves downward, the movable plate 8 is separated from the plug-in rod 16, the rotating plate 11 continues to rotate and moves downward, and is separated from the pressing plate 9, while the wedge-shaped plate 10 continuously acts on the pressing plate 9, so that the pressing plate 9 is fixed, and the movable plate 8 continues to move downward and is separated from the shell 1, which helps to eliminate the effect of the newspaper, the pressure relief effect of the explosion-proof groove 7 during the explosion, and the pressure relief effect of the tray 6 movement, thereby reducing the impact of the explosion on the NTC thermistor.

[0044] Among them, the connection between the movable plate 8 and the tray 6 is detachable and fixedly installed, which is convenient for installation and replacement of the sensitive element 3 and the tray 6, and is convenient for next use.

[0045] Similarly, when the sensitive element 3 inside the shell 1 needs to be replaced, the tray 6 is moved away from the plug-in groove 15 by mechanical equipment, and the tray 6 is separated from the shell 1. Since the wedge-shaped plate 10 presses the top of the pressing plate 9, and the sensitive element 3 is clamped at the top, the sensitive element 3 is pulled out from the bottom, which is convenient for taking out the sensitive element 3 inside, and the sensitive element 3 is inserted into the top of the shell 1 from the bottom of the shell 1. The top of the sensitive element 3 is first inserted into the inclined surface of the wedge-shaped plate 10 for fixation. This way is convenient to operate and replace. Finally, replace the tray 6, and move the movable plate 8 along the movable groove 13, so that the movable plate 8 is connected and fixed with the movable ring 5 again through the plug-in rod 16.

[0046] The rotating plate 11 is provided with an elastic member 17 connected with the rotating groove 14, and the end of the rotating plate 11 is inclined at an angle. The side of the rotating plate 11 is fixedly connected with a convex rod 18 which is in pressing cooperation with the fixed plate 12.

[0047] When the end of the rotating plate 11 presses the pressing plate 9, the end of the rotating plate 11 is stably pressed on the pressing plate 9 through the action of the elastic member 17, cooperation of the fixed plate 12 and the convex rod 18, so as to stabilize the sensitive element 3.

[0048] The explosion-proof groove 7 is circumferentially distributed and provided with three, and the bottom of the explosion-proof groove 7 is pasted with a protective film. According to the use of the NTC thermistor, when the NTC thermistor is used in a humid environment, the protective film can avoid the influence of moisture on the inside of the NTC thermistor.

[0049] The sensitive element 3 is mainly made of metal oxide semiconductor material, and common components include: transition metal oxides such as manganese oxide (MnO2), nickel oxide (NiO), cobalt oxide (CoO), iron oxide (Fe2O3), etc.

[0050] The sensitive element 3 in the application is laminated (similar to MLCC) or thick film, so as to be surface mounted in the middle of the shell 1. In this way, after the sensitive element 3 is wound and attached, it is fixed by adhesive tape, one of the pressing plates 9 is positioned corresponding to the position of the adhesive tape, and the stability of the attachment of the sensitive element 3 is further ensured.

[0051] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, alternatives, and variations can be made in the embodiments without departing from the spirit and scope of the present application as defined by the appended claims and their equivalents.

Claims

1. A recyclable NTC thermistor comprising: The outer shell (1) and the adhesive cover plate (2) covering the outer shell (1) are provided with a sensitive element (3) inside the outer shell (1), and the sensitive element (3) is connected to a connecting end (4) passing through the adhesive cover plate (2) by a lead wire; Its characteristic is that it further includes: A movable ring (5) is sandwiched between the outer shell (1) and the adhesive cover plate (2). A tray (6) is slidably fitted at the bottom of the outer shell (1). An explosion-proof groove (7) is provided on the tray (6). A movable plate (8) is connected to the tray (6) and presses against the movable ring (5). A pressing plate (9) is sandwiched between the side of the movable plate (8) and the sensitive element (3). A wedge plate (10) is provided below the movable ring (5) and engages with the top of the pressing plate (9). A rotating plate (11) is rotatably connected to the movable plate (8) and presses against the bottom of the pressing plate (9). The mounting assembly, when the movable plate (8) descends, causes the pressure plate (9) to press against the sensitive element (3) via the wedge plate (10) and the rotating plate (11); When replacing the sensitive element (3), the mating assembly causes the rotating plate (11) to disengage from the pressure plate (9), ensuring that the sensitive element (3) is pressed while the tray (6) is first disengaged from the outer shell (1) for gradual replacement.

2. The recyclable NTC thermistor according to claim 1, characterized in that: The mounting assembly includes a fixed plate (12) that is fixed to the housing (1) and cooperates with the rotating plate (11). The inner side of the housing (1) is provided with a movable groove (13) that cooperates with the pressure plate (9). The movable plate (8) is provided with a rotating groove (14) that is rotatably connected to the rotating plate (11). The bottom of the housing (1) is provided with an insertion groove (15) that cooperates with the tray (6).

3. A recyclable NTC thermistor according to claim 2, characterized in that: The mating assembly includes two symmetrically distributed and inclined plug rods (16), the plug rods (16) being elastic rods, the tops of the two plug rods (16) being connected and fixed to the movable ring (5), and the two plug rods (16) being inserted into the tops of the movable plate (8) and the wedge plate (10) respectively.

4. The recyclable NTC thermistor according to claim 3, characterized in that: An elastic element (17) connected to the rotating groove (14) is provided above the rotating plate (11).

5. The recyclable NTC thermistor according to claim 3, characterized in that: The explosion-proof grooves (7) are arranged in a circular pattern and there are three of them. A protective film is adhered to the bottom of the explosion-proof grooves (7).

6. The recyclable NTC thermistor according to claim 3, characterized in that: The sensitive element (3) has a stacked structure, with one of the pressure plates (9) positioned corresponding to the adhesive tape.

7. The recyclable NTC thermistor according to claim 3, characterized in that: The end of the rotating plate (11) is inclined, and a protruding rod (18) that abuts against the fixed plate (12) is fixedly connected to the side of the rotating plate (11).

8. A method of disassembling a recyclable NTC thermistor, characterized by, The assembly is made using a recyclable NTC thermistor as described in any one of claims 1-7, and the specific installation and disassembly method includes the following steps; S1. Insert the movable plate (8) into the movable slot (13), and the tray (6) enters the insertion slot (15); S2. Place the sensitive element (3) into the housing (1), connect the wedge plate (10) to the movable ring (5) through one of the plug rods (16), then attach the movable ring (5) to the movable plate (8), and plug and fix the movable ring (5) to the movable plate (8) through the other plug rod (16). S3、Then, install the adhesive cover plate (2) again, which is adhered to the top of the movable ring (5) and drives the movable ring (5) to move along the inside of the shell (1), so that the wedge-shaped plate (10) moves downward and the rotating plate (11) rotates, thereby pressing the top and bottom of the pressing plate (9) and making the pressing plate (9) press against the outer surface of the sensitive element (3), completing the preparation and putting into use; S4、When the heat accumulation occurs, the bottom of the tray (6) is opened along the explosion-proof groove (7), or the sensitive element (3) needs to be replaced, so that the tray (6) moves along the plug-in groove (15), and the movable plate (8) is separated from the movable ring (5).

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