High-reliability thermistor packaging structure

Abstract

The utility model provides a high-reliability thermistor packaging structure, which comprises a bottom plate and a packaging shell, the packaging shell is fixedly arranged on the upper surface of the bottom plate, a thermistor block is arranged in the packaging shell, one side of the top of the packaging shell is hinged with a top cover, one side of the upper surface of the bottom plate is fixedly provided with a hollow column, and the hollow column is provided with a through hole. A hollow column is arranged in the packaging shell, a positioning assembly is clamped in the hollow column, the positioning assembly is matched with the top cover, the top cover is clamped and positioned through the positioning assembly, clamping plates are symmetrically arranged in the packaging shell, the clamping plates are matched with a thermistor block, and the two sides of the thermistor block are attached to the two sets of clamping plates respectively. The thermistor block is installed through the arranged packaging shell, a thermistor is protected against mechanical impact, chemical corrosion and external environment influences such as moisture and dust, and the thermistor block is clamped and fixed by attaching the two sets of clamping plates symmetrically arranged in the packaging shell to the two sides of the thermistor block.

Description

TECHNICAL FIELD

[0001] The utility model relates to a thermal resistance technical field, concretely to a high reliability thermal resistance packaging structure. BACKGROUND

[0002] The thermal resistance is by shell, chip, pin, lead wire composition, it is in the process of using is to adopt the pin or lead wire and current communication, the equipment of two ends of current is carried out the barrier, can make PTC thermal resistance two end connection equipment when breaking or damage, the current is blocked, reduces the through of current, thereby improves the safety of equipment circuit use, the packaging of PTC thermal resistance generally will adopt shell and connect pin and chip.

[0003] The packaging structure of a PTC thermal resistance with publication number "CN219286126U", including the packaging cover, the pin box fixed in the both side end surfaces of the packaging cover, the pin box inside and the inside of the packaging cover are communicated, the position of the pin box and the packaging cover is connected and the middle part is equipped with the symmetrical pin hole, the inner wall of the pin hole is bonded with the sealing reinforcement pad, the inside of the pin box is fixed with the vertical hollow strip above the pin hole, the inside of the vertical hollow strip is transmissionally connected with the lifting positioning block, the bottom of the lifting positioning block is slid to the inside of the top of the pin hole, the packaging cover is provided, and the pin box is fixed on both sides of the packaging cover and communicated with the inside, in the process of using PTC thermal resistance, the packaging cover and the pin box can be opened, PTC thermal resistance is put in, the pin of PTC thermal resistance connection chip end is completely fixed by using the sealing reinforcement pad and the lifting positioning block in the inside of the pin box.

[0004] But the above-mentioned device still has the following problems in the process of implementation:

[0005] 1. The resistance of thermal resistance changes with temperature, in order to guarantee the normal work of thermal resistance, the design of protective shell is particularly important, the existing thermal resistance protective shell structure is single, and it is not convenient to open and close the shell for placing and replacing the resistance and other operations, which brings inconvenience to the maintenance of workers.

[0006] 2. The existing thermal resistance shell mostly lacks a fixing structure for the thermal resistance block, and the thermal resistance placed in the packaging shell lacks positioning and is easy to loosen, which affects the use effect. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a high reliability thermal resistance packaging structure to solve the problems in the above background technology.

[0008] In order to achieve the above object, the utility model provides the following technical scheme:

[0009] The utility model provides a high reliability thermistor package structure, including bottom plate and package shell, the package shell is fixedly installed on the upper surface of bottom plate, the inside of package shell is provided with thermistor block, the top side of package shell is hinged with top cover, one side of the upper surface of bottom plate is fixedly installed with hollow column, the inside of hollow column is clamped with positioning assembly, positioning assembly is matched with top cover, and the top cover is clamped and positioned through positioning assembly,

[0010] The inside of the package shell is symmetrically provided with clamping plates, which are matched with the thermistor block, and the two sides of the thermistor block are respectively attached to the two groups of clamping plates.

[0011] Preferably, four groups of mounting holes are evenly distributed at the four corners of the upper surface of the bottom plate, and the mounting holes are threaded mounting holes, which facilitate the connection of external connecting screws for connecting and installing the bottom plate.

[0012] Preferably, two groups of heat dissipation plates are symmetrically provided on the two sides of the package shell and fixedly installed, a plurality of groups of heat dissipation holes are evenly distributed and equally spaced on the two groups of heat dissipation plates, and a plurality of groups of clamping springs are fixedly connected to the inner sides of the clamping plates, and one end of each group of clamping springs is fixedly connected to the inner side of the heat dissipation plate.

[0013] Preferably, the thermistor block includes a face electrode and a bottom electrode, and a ceramic substrate is provided between the face electrode and the bottom electrode, a first thermistor and a second thermistor are provided on the top of the face electrode, and the input end of the second thermistor is electrically connected to the output end of the first thermistor.

[0014] Preferably, a lead wire is welded on one side of the thermistor block, two groups of through holes are provided on one side of the package shell corresponding to the position of the lead wire, the lead wire penetrates through the inside of the through hole, and a flexible protective gasket is attached to the inner wall of the through hole.

[0015] Preferably, the positioning assembly includes a plug rod, a connecting plate and a top pressing plate, the plug rod is movably inserted into the hollow column, the connecting plate is fixedly connected to the top end of the plug rod, and the top pressing plate is fixedly connected to the top surface of the connecting plate at the central position, when the plug rod is inserted into the hollow column, the bottom surface of the top pressing plate is tightly pressed against the top surface of one side of the top cover, and a heat dissipation fin is embedded on the top cover.

[0016] Preferably, a ejection spring is fixedly installed inside the plug rod symmetrically left and right, a positioning bead is fixedly installed on the outer end of the ejection spring, the positioning bead penetrates through the outer surface of the plug rod, and a positioning hole is provided on the two sides of the hollow column corresponding to the position of the positioning bead.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The heat-sensitive resistance block is installed through the set packaging shell, the heat-sensitive resistance is protected from mechanical impact, chemical corrosion and external environment, such as humidity, dust, etc., the heat generated by the heat-sensitive resistance block in the packaging shell can be dispersed in time through the heat dissipation plates arranged on both sides of the packaging shell and the heat dissipation fins embedded on the top cover, so that the heat-sensitive resistance block is prevented from deforming or performance degradation in a high-temperature environment;

[0019] 2. The side of the top cover is fixed through the arranged positioning assembly, after the heat-sensitive resistance block is placed in the packaging shell, the bottom end of the insertion rod is inserted into the hollow column, so that the top pressing plate can tightly press the side top surface of the top cover, the insertion and extraction of the insertion rod is convenient and fast, the operation is simple, the positioning effect is good, and the convenience of the staff in installation and disassembly is improved;

[0020] 3. The two groups of clamping plates arranged symmetrically in the packaging shell are in close contact with the two sides of the heat-sensitive resistance block, after the heat-sensitive resistance block is installed, the heat-sensitive resistance block is clamped and fixed through the elastic clamping force of the clamping spring, so that the heat-sensitive resistance block is not easy to loosen and affect the use. ACCURATE DRAWINGS

[0021] Figure 1 It is a front view structural schematic diagram of the utility model;

[0022] Figure 2 It is a front view structural schematic diagram of the heat-sensitive resistance block part of the utility model;

[0023] Figure 3 It is a front view structural schematic diagram of the clamping plate part of the utility model;

[0024] Figure 4 It is a front view structural schematic diagram of the positioning assembly part of the utility model;

[0025] Figure 5 It is a disassembled structural schematic diagram of the insertion rod part of the utility model.

[0026] In the drawing: 1, bottom plate; 101, mounting hole; 2, packaging shell; 3, heat-sensitive resistance block; 301, face electrode; 302, bottom electrode; 4, top cover; 401, heat dissipation fin; 5, hollow column; 6, positioning assembly; 601, insertion rod; 602, connecting plate; 603, top pressing plate; 7, clamping plate; 8, heat dissipation plate; 9, clamping spring; 10, first heat-sensitive resistance; 11, second heat-sensitive resistance; 12, lead foot; 13, through hole; 14, ejection spring; 15, positioning bead; 16, positioning hole. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0028] Please refer to Figures 1-5 The utility model provides a technical scheme:

[0029] Embodiment one:

[0030] A high reliability thermistor packaging structure, including bottom plate 1 and package shell 2, package shell 2 is fixedly installed on the upper surface of bottom plate 1, the inside of package shell 2 is provided with thermistor block 3, the top side of package shell 2 is hinged with top cover 4, the upper surface of bottom plate 1 is fixedly installed with hollow column 5 on one side, and positioning assembly 6 is clamped in hollow column 5, positioning assembly 6 is matched with top cover 4, positioning assembly 6 is clamped to top cover 4, and the thermistor block 3 is installed by the setting package shell 2, and the thermistor block 3 is protected from mechanical impact, chemical corrosion and the like;

[0031] The inside of package shell 2 is provided with clamping plate 7 symmetrically, clamping plate 7 is matched with thermistor block 3, and the two sides of thermistor block 3 are respectively attached to two groups of clamping plate 7;

[0032] Four groups of mounting holes 101 are evenly distributed and equidistantly formed on the upper surface of bottom plate 1, the mounting hole 101 is provided as a threaded mounting hole, and the bottom plate 1 is connected and installed by connecting external connecting screws through the mounting hole 101;

[0033] Two groups of heat dissipation plates 8 are symmetrically provided and fixedly installed on the two sides of package shell 2, a plurality of heat dissipation holes are evenly distributed and equidistantly formed on the two groups of heat dissipation plates 8, a plurality of clamping springs 9 are fixedly connected to the inner side of clamping plate 7, one end of the plurality of clamping springs 9 is respectively fixedly connected to the inner side of heat dissipation plate 8, after the thermistor block 3 is placed and installed, the thermistor block 3 is clamped and fixed by the elastic clamping force of clamping spring 9, so that it is not easy to produce loosening and affect use;

[0034] The thermistor block 3 includes face electrode 301 and bottom electrode 302, a ceramic substrate is arranged between the face electrode 301 and the bottom electrode 302, a first thermistor 10 and a second thermistor 11 are arranged on the top of the face electrode 301, and the input end of the second thermistor 11 is electrically connected with the output end of the first thermistor 10.

[0035] One side of the thermistor block 3 is welded with a lead foot 12, and two groups of through holes 13 are formed on the side of the packaging shell 2 corresponding to the position of the lead foot 12, the lead foot 12 penetrates through the through holes 13, and flexible protective pads are arranged on the inner walls of the through holes 13.

[0036] Embodiment two:

[0037] On the basis of embodiment one, the positioning assembly 6 in embodiment one is described in detail, the positioning assembly 6 includes a plug rod 601, a connecting plate 602 and a pressing plate 603, the plug rod 601 is movably inserted into the hollow column 5, the connecting plate 602 is fixedly connected to the top end of the plug rod 601, and the pressing plate 603 is fixedly connected to the top surface of the connecting plate 602; when the plug rod 601 is inserted into the hollow column 5, the bottom surface of the pressing plate 603 is tightly pressed against the top surface of one side of the top cover 4, and the heat dissipation fins 401 are embedded on the top cover 4.

[0038] The plug rod 601 is internally and symmetrically fixed with an ejection spring 14 on the left and right sides, the ejection spring 14 is fixedly installed with a positioning bead 15 at the outer end, the positioning bead 15 penetrates through the outer surface of the plug rod 601, and positioning holes 16 are formed on the two sides of the hollow column 5 corresponding to the positions of the positioning beads 15; the positioning assembly 6 is arranged to facilitate the fixation of one side of the top cover 4; after the thermistor block 3 is placed in the packaging shell 2, the bottom end of the plug rod 601 is inserted into the hollow column 5, so that the pressing plate 603 can tightly press against the top surface of one side of the top cover 4; the plug rod 601 is convenient and fast to insert and pull out, and the operation is simple, and the positioning effect is good.

[0039] Working principle: during use, the packaging shell 2 is arranged to install the thermistor block 3, so as to protect the thermistor from mechanical impact, chemical corrosion, etc.; the heat dissipation plates 8 arranged on the two sides of the packaging shell 2 and the heat dissipation fins 401 embedded on the top cover 4 can timely dissipate the heat generated by the thermistor block 3 in the packaging shell 2, so as to avoid the problems of deformation or performance degradation of the thermistor block in a high-temperature environment.

[0040] The positioning assembly 6 is arranged to facilitate the fixation of one side of the top cover 4; after the thermistor block 3 is placed in the packaging shell 2, the bottom end of the plug rod 601 is inserted into the hollow column 5, so that the pressing plate 603 can tightly press against the top surface of one side of the top cover 4; the plug rod 601 is convenient and fast to insert and pull out; the two groups of clamping plates 7 symmetrically arranged in the packaging shell 2 are tightly pressed against the two sides of the thermistor block 3; after the thermistor block 3 is installed, the elastic clamping force of the clamping spring 9 can clampingly fix the thermistor block 3, so that the thermistor block 3 is not easy to loosen and affect the use.

[0041] It should be noted that the thermistor block 3, the face electrode 301, the bottom electrode 302, the first thermistor 10 and the second thermistor 11 are devices or equipment existing in the prior art or devices or equipment that can be realized in the prior art, and the power supply, specific composition and principle thereof are clear to those skilled in the art, and therefore will not be described in detail.

[0042] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-reliability thermistor package structure comprising a base plate (1) and a package shell (2), characterized in that: The packaging shell (2) is fixedly installed on the upper surface of the bottom plate (1), the packaging shell (2) is internally provided with a thermistor block (3), one side of the top of the packaging shell (2) is hingedly connected with a top cover (4), one side of the upper surface of the bottom plate (1) is fixedly installed with a hollow column (5), the hollow column (5) is internally clamped with a positioning assembly (6), the positioning assembly (6) is matched with the top cover (4), and the top cover (4) is clamped and positioned by the positioning assembly (6); The packaging shell (2) is internally provided with a clamping plate (7), the clamping plate (7) is matched with the thermistor block (3), and the thermistor block (3) is respectively arranged on the two sides of the two clamping plates (7).

2. The high-reliability thermistor package structure of claim 1, wherein: Four groups of mounting holes (101) are uniformly and equidistantly formed on the upper surface of the bottom plate (1), the mounting holes (101) are threaded mounting holes, and the bottom plate (1) is connected and installed by connecting external connecting screws through the mounting holes (101).

3. The high-reliability thermistor package structure of claim 1, wherein: Two groups of heat dissipation plates (8) are symmetrically and fixedly installed on the two sides of the packaging shell (2), a plurality of groups of heat dissipation holes are uniformly and equidistantly formed on the two groups of heat dissipation plates (8), and a plurality of groups of clamping springs (9) are fixedly connected to the inner sides of the clamping plates (7), and one end of each group of the clamping springs (9) is fixedly connected to the inner side of the heat dissipation plate (8).

4. The high-reliability thermistor package structure of claim 1, wherein: The thermistor block (3) comprises a face electrode (301) and a bottom electrode (302), a ceramic substrate is arranged between the face electrode (301) and the bottom electrode (302), a first thermistor (10) and a second thermistor (11) are arranged on the top of the face electrode (301), and the input end of the second thermistor (11) is electrically connected with the output end of the first thermistor (10).

5. The high-reliability thermistor package structure of claim 1, wherein: A lead-out pin (12) is welded on one side of the thermistor block (3), two groups of through holes (13) are formed on one side of the packaging shell (2) corresponding to the position of the lead-out pin (12), the lead-out pin (12) penetrates the through holes (13) respectively, and a flexible protection gasket is arranged on the inner wall of the through hole (13).

6. The high-reliability thermistor package structure of claim 1, wherein: The positioning assembly (6) comprises an insertion rod (601), a connecting plate (602) and a top pressing plate (603), the insertion rod (601) is movably inserted into the hollow column (5), the connecting plate (602) is fixedly connected to the top end of the insertion rod (601), and the top pressing plate (603) is fixedly connected to the top surface of the connecting plate (602) at the central position. When the insertion rod (601) is inserted into the hollow column (5), the bottom surface of the top pressing plate (603) is tightly pressed against the top surface of one side of the top cover (4), and the top cover (4) is embedded with a heat dissipation fin (401).

7. The high-reliability thermistor package structure of claim 6, wherein: A top ejection spring (14) is fixedly installed on the inner side of the insertion rod (601), a positioning bead (15) is fixedly installed on the outer end of the top ejection spring (14), the positioning bead (15) penetrates the outer surface of the insertion rod (601), and positioning holes (16) are formed on the two sides of the hollow column (5) corresponding to the positions of the positioning beads (15).

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