Efficient heat transfer PTC (Positive Temperature Coefficient) thermistor

Abstract

The utility model discloses an efficient heat transfer PTC (Positive Temperature Coefficient) thermistor and relates to the technical field of resistors. The thermistor comprises a thermistor body, the bottom of the thermistor body is provided with two pins, the outer side of the thermistor body is fixedly sleeved with a shell, the bottom ends of the outer walls of the two sides of the shell are each fixedly provided with two U-shaped guide blocks, and the two guide blocks on the same side are slidably connected with the same protective frame. The same protection plate is fixedly arranged at the bottom ends of the two protection frames; the thermistor further comprises an installation groove formed in the inner wall of the shell, heat conduction cotton is arranged in the installation groove and makes contact with the thermistor body, and through holes are formed in the outer walls of the two sides of the shell and one sides of the two pieces of heat conduction cotton. According to the utility model, people can conveniently and quickly adjust the positions of the protection plate and the protection frame, the operation is simple and convenient, heat of the thermistor main body can be quickly transferred to the shell, the heat is dissipated by utilizing the shell, and the heat dissipation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of resistor, in particular, relate to a kind of high-efficiency heat transfer PTC thermistor. BACKGROUND

[0002] PTC generally referred to as we mention is positive temperature coefficient thermistor, abbreviated as PTC thermistor. PTC thermistor is a typical temperature-sensitive semiconductor resistance, exceed certain temperature (Curie temperature), its resistance value increases with the temperature rise in step, thus need auxiliary heat dissipation structure to carry out heat transfer.

[0003] Through retrieval, the patent with publication number CN210429443U discloses a kind of high-efficiency heat transfer PTC thermistor, the PTC thermistor has the following disadvantages when in use:

[0004] 1, when adjusting protective rotating frame, screw needs to be repeatedly twisted, operation is more cumbersome.

[0005] 2, low heat dissipation efficiency, not conducive to PTC thermistor heat dissipation.

[0006] Therefore, we propose a kind of high-efficiency heat transfer PTC thermistor. INVENTION CONTENTS

[0007] The utility model aims at solving the shortcomings of prior art, such as the need to repeatedly twist screw when adjusting protective rotating frame, cumbersome operation, low heat dissipation efficiency and not conducive to PTC thermistor heat dissipation, and proposes a kind of high-efficiency heat transfer PTC thermistor.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0009] A kind of high-efficiency heat transfer PTC thermistor, comprising:

[0010] Thermistor main body, the bottom of the thermistor main body is provided with two pins, the outer side of the thermistor main body is fixedly provided with a shell, the bottom end of the two side outer walls of the shell is fixedly provided with two U-shaped guide blocks, the same side of the two guide blocks is slidably connected with the same protective frame, the bottom end of the two protective frames is fixedly provided with the same protective plate;

[0011] It further includes installation groove opened in the inner wall of the shell, the installation groove is provided with heat-conducting cotton, the heat-conducting cotton is in contact with the thermistor main body, the two side outer walls of the shell and the side of the two heat-conducting cotton are provided with through holes;

[0012] Limiting mechanism, the limiting mechanism is arranged on one side of the protective frame, for limiting the protective frame.

[0013] In a possible design, the limiting mechanism comprises an elastic block and two clamping grooves, the elastic block is integrally arranged on one side of the guide block, one side of the elastic block is integrally provided with a clamping block, and the two clamping grooves are both arranged on one side of the protective frame.

[0014] In a possible design, a strip-shaped hole is arranged on one side of the protective frame, and guide grooves are arranged at both ends of the strip-shaped hole.

[0015] In a possible design, a plurality of grooves are arranged on the outer wall of the shell.

[0016] In a possible design, two positioning blocks are fixedly arranged on the bottom of the shell, two positioning grooves are arranged on the surface of the protective plate, and the positioning blocks and the positioning grooves are matched.

[0017] In a possible design, two accommodation holes are arranged on the surface of the protective plate, and the bottom end of the lead is located in the accommodation hole.

[0018] In the application, when in use, the protective frame is directly pushed, the elastic block is deformed, the clamping block is separated from the clamping groove and enters the strip-shaped hole, then the protective frame is pushed along the guide block, so that the clamping block is separated from the strip-shaped hole and the other clamping groove is connected, at this time, the protective plate and the bottom of the shell are in contact, and the positioning blocks and the positioning grooves are connected.

[0019] When dissipating heat, the heat of the thermistor body is transmitted to the shell through the heat-conducting cotton, the shell increases the contact area with air through the through hole and the groove, and the heat dissipation efficiency is improved.

[0020] Beneficial effects:

[0021] In the utility model, the efficient heat transfer PTC thermistor is convenient for people to quickly adjust the positions of the protective plate and the protective frame through the clamping block, the clamping groove and the strip-shaped groove, and is simple and convenient to operate.

[0022] In the utility model, the efficient heat transfer PTC thermistor can quickly transmit the heat of the thermistor body to the shell through the heat-conducting cotton, the through hole and the groove, dissipate the heat through the shell, and improve the heat dissipation efficiency.

[0023] The utility model discloses can conveniently people quick adjustment the position of protective plate and protective frame, simple and convenient operation can quickly transmit the heat of thermistor body to the shell, utilize the shell to dissipate the heat, improved heat dissipation efficiency. ACCURATE DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0025] Figure 1 It is a whole three-dimensional structure schematic view of an embodiment of the present application.

[0026] Figure 2 It is a partial three-dimensional structure schematic view of a first perspective of an embodiment of the present application.

[0027] Figure 3 It is a partial three-dimensional structure schematic view of a second perspective of an embodiment of the present application.

[0028] Figure 4 It is a partial three-dimensional structure schematic view of a third perspective of an embodiment of the present application.

[0029] In the figure: 1, thermistor main body; 2, pin; 3, shell; 4, guide block; 5, protection frame; 6, mounting groove; 7, heat-conducting cotton; 8, through hole; 9, recess; 10, positioning block; 11, elastic block; 12, clamping block; 13, protection plate; 14, give way hole; 15, positioning groove; 16, strip-shaped hole; 17, guide groove; 18, clamping groove. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0031] In the description of the present application, it is understood that the terms "opening", "upper", "middle", "length", "inner" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated components or elements must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the present application.

[0032] In order to keep the following description of the embodiments of the present application clear and concise, the present application omits the detailed description of known functions and known components.

[0033] Embodiment 1

[0034] Reference Figures 1-4A high-efficiency heat-conducting PTC thermistor comprises:

[0035] The thermistor body 1 is provided with two pins 2 at the bottom, and a shell 3 is fixedly arranged on the outer side of the thermistor body 1. The shell 3 is made of a material with good heat conduction performance, such as aluminum alloy or copper alloy, so as to better conduct the heat generated by the thermistor body 1. Two U-shaped guide blocks 4 are fixedly arranged at the bottom of the outer walls of the two sides of the shell 3. The same protective frame 5 is slidably connected between the two guide blocks 4 on the same side. The bottom of the two protective frames 5 is fixedly provided with the same protective plate 13, which is used to protect the pins 2 from external impact.

[0036] The installation groove 6 is arranged in the inner wall of the shell 3, and the heat-conducting cotton 7 is arranged in the installation groove 6. The heat-conducting cotton 7 is in contact with the thermistor body 1, which effectively improves the heat conduction efficiency. The through holes 8 are arranged in the outer walls of the two sides of the shell 3 and one side of the two heat-conducting cottons 7. These through holes 8 help to further promote the convection and radiation of heat and improve the heat dissipation effect.

[0037] The limiting mechanism is arranged on one side of the protective frame 5 and is used to limit the protective frame 5. The limiting mechanism comprises the elastic block 11 and the two clamping grooves 18. The elastic block 11 is integrally formed on one side of the guide block 4. The clamping block 12 is integrally formed on one side of the elastic block 11. The two clamping grooves 18 are arranged on one side of the protective frame 5. The clamping block 12 is matched with the clamping groove 18. The material of the guide block 4 and the elastic block 11 is rubber or other elastic materials.

[0038] Embodiment 2

[0039] The high-efficiency heat-conducting PTC thermistor is improved on the basis of the high-efficiency heat-conducting PTC thermistor in embodiment 1.

[0040] In one aspect of the embodiment, the strip-shaped hole 16 is arranged on one side of the protective frame 5, which can provide a space for the clamping block 12 to avoid the continuous deformation of the elastic block 11. Meanwhile, the strip-shaped hole 16 can facilitate the contact between the groove 9 and the air. The guide grooves 17 are arranged at the two ends of the strip-shaped hole 16, which can guide the deformation of the elastic block 11.

[0041] In one aspect of the embodiment, the outer wall of the shell 3 is provided with a plurality of grooves 9, which can further increase the contact area with the air and improve the heat dissipation effect.

[0042] In one aspect of the embodiment, the bottom of the shell 3 is fixedly provided with the two positioning blocks 10, and the surface of the protective plate 13 is provided with the two positioning grooves 15. The positioning block 10 is matched with the positioning groove 15. Through the cooperation of the positioning block 10 and the positioning groove 15, the installation accuracy and stability of the protective plate 13 can be further ensured.

[0043] In one aspect of the embodiment, the surface of the protection plate 13 is provided with two accommodating holes 14, the bottom end of the pin 2 is located in the accommodating hole 14, and the bottom end of the pin 2 can extend out of the accommodating hole 14, thereby facilitating the connection with the external circuit.

[0044] It should be noted that in the description of the present specification, the description such as "first", "second", etc. is only used to distinguish various features, and does not have actual order or pointing meaning, and the present application is not limited thereto.

[0045] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details, and the utility model is not limited to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A high efficient heat transfer PTC thermistor, characterized by, Include: The bottom of the thermistor body (1) is provided with two pins (2), the outer side of the thermistor body (1) is fixed with a shell (3), the bottom end of the two side outer walls of the shell (3) is fixed with two U-shaped guide blocks (4), the same side of the two guide blocks (4) is slidably connected with the same protection frame (5), the bottom end of the two protection frames (5) is fixed with the same protection plate (13); It also includes a mounting groove (6) opened in the inner wall of the shell (3), a heat-conducting cotton (7) is arranged in the mounting groove (6), the heat-conducting cotton (7) is in contact with the thermistor body (1), and the two side outer walls of the shell (3) and one side of the two heat-conducting cottons (7) are provided with through holes (8); The limiting mechanism is arranged on one side of the protection frame (5) and used for limiting the protection frame (5).

2. A high efficient heat transfer PTC thermistor as claimed in claim 1, characterized in that, The limiting mechanism includes an elastic block (11) and two clamping grooves (18), the elastic block (11) is integrally formed on one side of the guide block (4), one side of the elastic block (11) is integrally formed with a clamping block (12), the two clamping grooves (18) are arranged on one side of the protection frame (5), and the clamping block (12) and the clamping groove (18) are matched.

3. A high efficiency heat transfer PTC thermistor as defined in claim 2, wherein, The side of the protection frame (5) is provided with a strip-shaped hole (16), and the both ends of the strip-shaped hole (16) are provided with guide grooves (17).

4. A high efficiency heat transfer PTC thermistor as defined in claim 3, wherein, The outer wall of the shell (3) is provided with a plurality of grooves (9).

5. A high efficiency heat transfer PTC thermistor as defined in claim 4, wherein, The bottom of the shell (3) is fixed with two positioning blocks (10), and the surface of the protection plate (13) is provided with two positioning grooves (15), the positioning blocks (10) and the positioning grooves (15) are matched.

6. A high efficiency heat transfer PTC thermistor as defined in claim 5, wherein, The surface of the protection plate (13) is provided with two letting holes (14), and the bottom end of the pin (2) is located in the letting hole (14).

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