Surface-mounted thermistor

Abstract

The utility model relates to the technical field of sensors, and discloses a surface-mounted thermistor which comprises a surface-mounted thermistor body, a first clamping seat is connected to the bottom of the surface-mounted thermistor body in a clamped mode, a second clamping seat is connected to the top of the surface-mounted thermistor body in a clamped mode, and the second clamping seat is hinged to the first clamping seat through a connecting assembly. The first clamping base and the second clamping base are connected with a first wire clamp and a second wire clamp respectively, a groove is formed in one side of the bottom end of the second wire clamp, and a locking assembly is arranged in the groove. The beneficial effects of the utility model are that the clamping seat 2 and the clamping seat 1 are hinged through the connecting assembly, the clamping seat 2 can be opened to facilitate the placement of the SMD thermistor, the pins of the SMD thermistor can be wired through the wiring hole of the wiring end without welding, and the clamping seat 2 can be closed to be quickly locked through the locking assembly, so that the SMD thermistor can be conveniently placed. And the clamping seat I and the clamping seat II can limit the SMD thermistor, so that the mounting gap is reduced, and shaking can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a chip-type thermistor. Background Art

[0002] A thermistor is an electronic component whose resistance value changes with temperature. The main feature of a thermistor is its sensitivity to temperature. Its resistance value will change significantly with changes in temperature. Thermistors are usually used in temperature measurement, temperature control, and circuit protection. Depending on the temperature coefficient, thermistors can be divided into positive temperature coefficient thermistors and negative temperature coefficient thermistors.

[0003] Its application number is "CN202122221960.9", and the disclosed "a combined chip thermistor" "comprises a first resistor protection box, a second resistor protection box, a resistor body, a socket, a connection box and two fixed boxes, the first resistor protection box and the second resistor protection box are both provided with a resistor body, the electrodes of the resistor body pass through the first resistor protection box, the socket is fixedly connected to the left side outside the second resistor protection box, and the socket is a trapezoidal structure, the front and back sides of the socket are provided with slots, the connection box is fixedly arranged on the right side outside the first resistor protection box, and the right side of the connection box is provided with an opening, the two fixed boxes are respectively fixedly arranged on the front and back sides outside the connection box, and the two fixed boxes are provided with connection structures." In the utility model, the connection box on the first resistor protection box and the socket on the second resistor protection box can be spliced ​​together through the split design, and the socket can be firmly fixed in the connection box through the cooperation of the slide rail, slider, pull rod, spring and clamping block in the clamping structure to prevent the first resistor protection box and the second resistor protection box from being separated. The utility model can quickly splice the two resistor protection boxes together.

[0004] However, the above method still has the following defects: when the resistor body is protected by the resistor protective shell, the electrodes of the resistor body need to be passed through the resistor protective shell before it can be wired. Once welding is adopted, it is difficult to remove it from the resistor protective shell. After the thermistor is damaged, it is not convenient to replace it. There is a gap between the resistor protective shell and the resistor body, which makes it difficult to ensure the firmness and stability between the resistor body and the resistor protective shell, which easily causes the resistor body to shake. Summary of the invention

[0005] The utility model aims to provide a chip thermistor to solve the problem that once the resistor body is welded, it is difficult to remove it from the resistor protection shell, and it is not convenient to replace the thermistor after it is damaged.

[0006] The utility model provides the following technical solution: a chip thermistor, comprising a chip thermistor, wherein a first card holder is snap-connected at the bottom of the chip thermistor, a second card holder is snap-connected at the top of the chip thermistor, the second card holder is hinged to the first card holder through a connecting component, the first card holder and the second card holder are respectively connected to a first wire clamp and a second wire clamp, a groove is provided at one side of the bottom end of the second wire clamp, a locking component is provided inside the groove, the second wire clamp is snap-connected to the first wire clamp through the locking component, two pins are fixedly connected to one side of the chip thermistor, a wiring terminal is provided at one end of the pin, and a wiring hole is provided on the surface of the wiring terminal.

[0007] As a preferred technical solution of the utility model, a card slot is provided at the top of the card seat one and the bottom of the card seat two, the card slot is connected with a heat dissipation hole, the chip thermistor is connected with the card slot, the bottom end of the card seat one and the bottom end of the card seat two are fixedly connected with heat dissipation fins, and the card seat one, the card seat two and the heat dissipation fins are all made of copper.

[0008] As a preferred technical solution of the utility model, a positioning plate is welded to the bottom end of the wire clamp 1, a plurality of positioning holes are opened on the surface of the positioning plate, and the heat dissipation fins at the bottom end of the holder 1 are welded to one side of the top end of the positioning plate.

[0009] As a preferred technical solution of the utility model, the connecting assembly includes a support and a movable block, the movable block is hinged to the support through a pin shaft, one side of the support is fixedly connected to the first holder, and one side of the movable block is fixedly connected to the second holder.

[0010] As a preferred technical solution of the utility model, the top of wire clamp one and the bottom of wire clamp two are both provided with wiring grooves, the wiring terminals are located inside the wiring grooves, arc grooves are provided on both sides of the top of wire clamp one and the bottom of wire clamp two, and the pins are engaged and connected with the arc grooves.

[0011] As a preferred technical solution of the utility model, one side of the wire clamp 1 and one side of the wire clamp 2 are fixedly provided with connecting plates, and one side of the clamping seat 1 and one side of the clamping seat 2 are fixedly connected to the other sides of the two connecting plates respectively.

[0012] As a preferred technical solution of the utility model, the locking assembly includes a light rod and a spring, the light rod is fixedly connected to the inside of the groove, the surface of the light rod is sleeved with a spring, both sides of the light rod are slidably connected with rod sleeves, a push piece is fixedly provided at the bottom of the rod sleeve, and a locking block is fixedly provided on one side of the push piece.

[0013] As a preferred technical solution of the utility model, two limit blocks are fixedly provided on one side of a top end of the wire clamp, a limit groove is provided on one side of the limit block, and the locking block is engaged with the limit groove.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The chip thermistor is hingedly connected to the second card holder and the first card holder through a connecting component, the second card holder can be opened to facilitate placement of the chip thermistor, and the pins of the chip thermistor can be wired through the wiring holes of the wiring terminals without welding, and the second card holder can be quickly locked by using a locking component by closing it, the first card holder and the second card holder can limit the chip thermistor, reducing the installation gap and preventing shaking, the first wire clamp and the second wire clamp can limit the pins of the chip thermistor and provide protection for the wiring terminals, the second card holder is opened by the locking component, and the connector of the wire is removed from the wiring hole of the wiring terminal, so that the chip thermistor can be quickly disassembled and a damaged chip thermistor can be quickly replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the structural schematic diagrams of the utility model;

[0017] Figure 2 This is the second structural diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the wire clamp 1 of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the wire clamp 2 of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the locking assembly of the utility model.

[0021] In the figure: 1. SMD thermistor; 2. Card holder 1; 3. Card holder 2; 4. Card slot; 5. Heat dissipation hole; 6. Connection assembly; 601. Support; 602. Pin; 603. Movable block; 7. Heat dissipation fin; 8. Pin; 9. Wiring terminal; 10. Wiring hole; 11. Connection plate; 12. Wire clamp 1; 13. Wire clamp 2; 14. Positioning plate; 15. Positioning hole; 16. Wiring groove; 17. Arc groove; 18. Limit block; 19. Limit groove; 20. Recess; 21. Locking assembly; 2101. Light rod; 2102. Spring; 2103. Rod sleeve; 2104. Push piece; 2105. Locking block. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] See also Figures 1 to 5In an embodiment of the utility model, a chip thermistor includes a chip thermistor 1, a base 2 is snap-connected at the bottom of the chip thermistor 1, a base 2 is snap-connected at the top of the chip thermistor 1, the chip thermistor 1 can be limited by the base 2 and the base 3 to prevent shaking, the base 3 is hinged to the base 2 through a connecting component 6, the base 2 3 can be opened by a hinged connection, the base 2 and the base 3 are respectively connected to a wire clip 12 and a wire clip 2 13, a wire clip 13 at the bottom A groove 20 is provided on the side, and a locking component 21 is provided inside the groove 20. The wire clamp 2 13 is connected to the wire clamp 1 12 by the locking component 21. The stability between the wire clamp 2 13 and the wire clamp 1 12 can be maintained by the locking component 21. Two pins 8 are fixedly connected to one side of the chip thermistor 1. A terminal 9 is provided at one end of the pin 8. A wiring hole 10 is provided on the surface of the terminal 9. The pin 8 of the chip thermistor 1 can be limited by the wire clamp 1 12 and the wire clamp 2 13, and the terminal 9 can be protected at the same time;

[0024] In this embodiment, preferably, a card slot 4 is provided at the top of the card seat 1 2 and the bottom of the card seat 2 3, and a heat dissipation hole 5 is connected to the card slot 4. The chip thermistor 1 is connected with the card slot 4 by snapping, and the bottom end of the card seat 1 2 and the bottom end of the card seat 2 3 are fixedly connected with a heat dissipation fin 7. The card seat 1 2, the card seat 2 3 and the heat dissipation fin 7 are all made of copper material. The card slot 4 can ensure the fit between the chip thermistor 1 and the card seat 1 2 and the card seat 2 3. The card seat 1 2, the card seat 2 3 and the heat dissipation fin 7 can absorb the heat of the chip thermistor 1 and dissipate the heat;

[0025] In this embodiment, preferably, a positioning plate 14 is welded to the bottom end of the wire clamp 12, and a plurality of positioning holes 15 are opened on the surface of the positioning plate 14. The heat dissipation fin 7 at the bottom end of the card holder 2 is welded to one side of the top end of the positioning plate 14, and the wire clamp 12 and the card holder 2 can be fixed by the positioning plate 14 and the positioning holes 15;

[0026] In this embodiment, preferably, the connecting assembly 6 includes a support 601 and a movable block 603, the movable block 603 is hinged to the support 601 through a pin 602, one side of the support 601 is fixedly connected to the holder 1 2, one side of the movable block 603 is fixedly connected to the holder 2 3, and the movable block 603 is movably connected to the support 601 through the pin 602, so that the holder 2 3 can make a circular motion along the pin 602;

[0027] In this embodiment, preferably, the top of the wire clamp 12 and the bottom of the wire clamp 2 13 are both provided with a wiring groove 16, and the wiring terminal 9 is located inside the wiring groove 16. The wiring groove 16 facilitates the wiring activity between the wiring terminal 9 and the wire, and can provide protection for the wiring. The two sides of the top of the wire clamp 12 and the two sides of the bottom of the wire clamp 2 13 are both provided with an arc groove 17, and the pin 8 is engaged with the arc groove 17. The arc groove 17 can improve the stability of the pin 8 and prevent the pin 8 from shaking and deformation;

[0028] In this embodiment, preferably, one side of the wire clamp 12 and one side of the wire clamp 2 13 are both fixedly provided with a connecting plate 11, one side of the clamp 1 2 and one side of the clamp 2 3 are respectively fixedly connected to the other sides of the two connecting plates 11, and the clamp 1 2 and the clamp 2 3 can support the wire clamp 1 12 and the wire clamp 2 13 through the connecting plate 11;

[0029] In this embodiment, preferably, the locking assembly 21 includes a light rod 2101 and a spring 2102, the light rod 2101 is fixedly connected to the inside of the groove 20, the surface of the light rod 2101 is sleeved with a spring 2102, both sides of the light rod 2101 are slidably connected with rod sleeves 2103, the light rod 2101 can limit the spring 2102 and the rod sleeve 2103, the bottom of the rod sleeve 2103 is fixedly provided with a push piece 2104, one side of the push piece 2104 is fixedly provided with a locking block 2105, the spring 2102 can support between the two rod sleeves 2103, and can maintain the stability of the two locking blocks 2105;

[0030] In this embodiment, preferably, two limit blocks 18 are fixedly provided on one side of the top of the wire clamp 12, and a limit groove 19 is opened on one side of the limit block 18. The locking block 2105 is engaged with the limit groove 19, and the wire clamp 2 13 can be locked by inserting the locking block 2105 into the limit groove 19 of the limit block 18.

[0031] When in use, first fix and install the positioning plate 14 through the positioning hole 15, then connect the pin 8 of the chip thermistor 1 through the wiring hole 10 of the wiring terminal 9, and then put the chip thermistor 1 into the slot 4 of the holder 2, then place the wiring terminal 9 in the wiring slot 16 of the wire clamp 12 and the wire clamp 2 13, and seat the pin 8 with the arc groove 17 of the wire clamp 2 13, and finally rotate the holder 2 3 through the pin shaft 602 of the connecting component 6 so that it moves in a circle along the pin shaft 602, close the holder 2 3, and push the two push pieces 2104 of the locking component 21 in opposite directions to compress the spring 2102. After the wire clamp 2 13 contacts the wire clamp 1 12, release the push piece 2104, and the spring 2102 can push the locking block 2105 into the limiting groove 19 of the limiting block 18 through the rod sleeve 2103 and the push piece 2104, so that the holder 2 3 and the wire clamp 2 13 can be quickly locked;

[0032] When the chip thermistor 1 is working, the card holder 1 2 and the card holder 2 3 can limit the chip thermistor 1 through the card slot 4, reducing the installation gap and preventing the chip thermistor 1 from shaking. The wire clamp 1 12 and the wire clamp 2 13 can limit the pin 8 of the chip thermistor 1 through the arc groove 17, and can provide protection for the terminal 9 through the wiring groove 16. The card holder 1 2, the card holder 2 3 and the heat dissipation fin 7 can absorb the heat of the chip thermistor 1 and dissipate the heat;

[0033] After the chip thermistor 1 is damaged, the two push pieces 2104 of the locking assembly 21 are pushed toward each other again, the lock block 2105 is pulled out, the holder 2 3 is opened, and the connector of the wire is removed from the wiring hole 10 of the wiring terminal 9, and the chip thermistor 1 can be quickly taken out from the holder 1 2, so that the chip thermistor 1 can be quickly replaced.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chip thermistor, comprising a chip thermistor (1), characterized in that: The bottom of the SMD thermistor (1) is snap-connected with a first card holder (2), and the top of the SMD thermistor (1) is snap-connected with a second card holder (3); the second card holder (3) is hingedly connected to the first card holder (2) via a connecting component (6); the first card holder (2) and the second card holder (3) are respectively connected to a first wire clamp (12) and a second wire clamp (13); a groove (20) is provided on one side of the bottom end of the second wire clamp (13); a locking component (21) is provided inside the groove (20); the second wire clamp (13) is snap-connected with the first wire clamp (12) via the locking component (21); two pins (8) are fixedly connected to one side of the SMD thermistor (1); one end of the pins (8) is provided with a wiring terminal (9); a wiring hole (10) is provided on the surface of the wiring terminal (9).

2. The chip thermistor according to claim 1, characterized in that: The top of the first card seat (2) and the bottom of the second card seat (3) are both provided with a card slot (4), the card slot (4) is connected with a heat dissipation hole (5), the chip thermistor (1) is engaged with the card slot (4), the bottom end of the first card seat (2) and the bottom end of the second card seat (3) are both fixedly connected with a heat dissipation fin (7), and the first card seat (2), the second card seat (3) and the heat dissipation fin (7) are all made of copper.

3. The chip thermistor according to claim 2, characterized in that: A positioning plate (14) is welded to the bottom end of the wire clamp 1 (12), a plurality of positioning holes (15) are provided on the surface of the positioning plate (14), and the heat dissipation fins (7) at the bottom end of the holder 1 (2) are welded to one side of the top end of the positioning plate (14).

4. The chip thermistor according to claim 1, characterized in that: The connecting assembly (6) comprises a support (601) and a movable block (603); the movable block (603) is hinged to the support (601) via a pin shaft (602); one side of the support (601) is fixedly connected to the first clamping seat (2); and one side of the movable block (603) is fixedly connected to the second clamping seat (3).

5. The chip thermistor according to claim 1, characterized in that: The top end of the first wire clamp (12) and the bottom end of the second wire clamp (13) are both provided with a wiring groove (16), the wiring terminal (9) is located inside the wiring groove (16), and both sides of the top end of the first wire clamp (12) and both sides of the bottom end of the second wire clamp (13) are both provided with an arc groove (17), and the pin (8) is engaged and connected with the arc groove (17).

6. The chip thermistor according to claim 1, characterized in that: One side of the wire clamp 1 (12) and one side of the wire clamp 2 (13) are both fixedly provided with a connecting plate (11), and one side of the clamping seat 1 (2) and one side of the clamping seat 2 (3) are respectively fixedly connected to the other sides of the two connecting plates (11).

7. The chip thermistor according to claim 1, characterized in that: The locking assembly (21) comprises a polished rod (2101) and a spring (2102); the polished rod (2101) is fixedly connected to the inside of the groove (20); the surface of the polished rod (2101) is sleeved with the spring (2102); rod sleeves (2103) are slidably connected to both sides of the polished rod (2101); a push piece (2104) is fixedly provided at the bottom of the rod sleeve (2103); and a locking block (2105) is fixedly provided on one side of the push piece (2104).

8. The chip thermistor according to claim 7, characterized in that: Two limit blocks (18) are fixedly provided on one side of the top end of the wire clamp 1 (12), a limit slot (19) is provided on one side of the limit block (18), and the locking block (2105) is snap-fitted and connected to the limit slot (19).

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