CN219225988U

CN219225988U - Chip NTC resistor

Info

Publication number: CN219225988U
Application number: CN202223609993.1U
Authority: CN
Inventors: 张一驰
Original assignee: Shenzhen Jiushengchang Electronics Co ltd
Current assignee: Shenzhen Jiushengchang Electronics Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-20
Anticipated expiration: 2032-12-30

Abstract

The utility model provides a chip NTC resistor, which comprises an explosion-proof shell, wherein an NTC resistor body is fixedly arranged in the explosion-proof shell, mounting grooves are symmetrically formed in two sides of the explosion-proof shell, a welding mechanism is movably arranged in the mounting grooves, the welding mechanism comprises an upper sliding plate, a welding table handle is in contact with the upper sliding plate, soldering tin between the upper sliding plate and a lower contact plate can be melted, the upper sliding plate and the lower contact plate can slide downwards in the mounting grooves, the lower contact plate can be directly contacted with welding spots on a circuit board, more soldering tin can be added between the lower contact plate and the welding spots through the arrangement of grooves and through holes, so that the stability of the NTC resistor after welding is improved, and the welding mechanism is also fixed in the mounting grooves under the action of the soldering tin; after the welding is finished, the explosion-proof shell, the NTC resistor body and the circuit board are in a separation state, and the NTC resistor body is conveniently radiated through the lower radiating holes and the air holes.

Description

Chip NTC resistor

Technical Field

The utility model relates to the technical field of chip NTC resistors, in particular to a chip NTC resistor.

Background

The NTC resistor is a thermosensitive ceramic component manufactured by adopting an electronic ceramic process, the resistance value of the NTC resistor can be reduced along with the temperature rise, and the NTC resistor is low in price and widely used in electronic products. The chip NTC resistor is directly attached to a circuit board or an electronic device through welding when in use, an operator is required to spot welding spots on the circuit board when the chip NTC resistor is welded, then welding is performed between the two ends of the chip NTC resistor and the welding spots, the size of the chip NTC resistor is small, the operation is inconvenient, the welding efficiency is low, and the chip NTC resistor is directly contacted with the surface of the circuit board after the welding is completed, so that the explosion-proof capacity is low.

To this end, the present utility model provides a chip NTC resistor.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the chip NTC resistor so as to solve the problems in the background art, and the utility model can weld the NTC resistor with welding spots on a circuit board through adjusting a welding mechanism, is convenient to operate and increases the safety of an NTC resistor body through an explosion-proof shell.

In order to achieve the above object, the present utility model is realized by the following technical scheme: the utility model provides a piece formula NTC resistor, includes explosion-proof housing, the inside fixed mounting of explosion-proof housing has the NTC resistance body, the mounting groove has been seted up to the bilateral symmetry of explosion-proof housing, the inside movable mounting of mounting groove has welding mechanism, welding mechanism includes the top slide, the bilateral symmetry fixed mounting of top slide has the slider, the spout has been seted up corresponding slider position department on the both sides inner wall of mounting groove, the inside of the spacing slidable mounting in the spout of slider.

Further, the top of the outer end of the mounting groove is provided with an arc-shaped surface, the bottom of the explosion-proof shell is provided with a lower heat dissipation hole, and the top and two sides of the explosion-proof shell are provided with air holes.

Further, the bottom bilateral symmetry fixed mounting of top slide has the connecting rod, the bottom fixed mounting of connecting rod has the contact plate down, be provided with soldering tin between top slide and the contact plate down.

Furthermore, grooves are formed in the bottom of the lower contact plate at equal intervals, and through holes are formed in the grooves at equal intervals.

Further, the through holes and the grooves are mutually perpendicular, and the through holes are connected with the grooves.

Further, the NTC resistor body comprises a ceramic shell, and the ceramic shell is fixedly arranged in the explosion-proof shell.

Further, an NTC chip is fixedly mounted in the ceramic shell, and a lead is arranged at the bottom of the NTC chip.

Further, electrode plates are fixedly mounted on the inner wall of the mounting groove and are respectively and electrically connected with one end of the lead.

The utility model has the beneficial effects that: according to the chip NTC resistor, the handle of the welding table is contacted with the upper sliding plate, so that soldering tin between the upper sliding plate and the lower contact plate can be melted, the upper sliding plate and the lower contact plate slide downwards in the mounting groove, the lower contact plate is directly contacted with a welding spot on the circuit board, more soldering tin can be added between the lower contact plate and the welding spot through the arrangement of the groove and the through hole, the stability of the NTC resistor after welding is improved, the welding efficiency of the NTC resistor can be improved, and the welding mechanism can be fixed in the mounting groove under the action of the soldering tin; after the welding is finished, the explosion-proof shell, the NTC resistor body and the circuit board are in a separation state, and the NTC resistor body is conveniently radiated through the lower radiating holes and the air holes.

Drawings

Fig. 1 is a structural diagram of a chip NTC resistor according to the present utility model;

fig. 2 is a cross-sectional view of a chip NTC resistor according to the present utility model;

fig. 3 is a chip NTC resistor welding mechanism according to the present utility model;

in the figure: 1. an explosion-proof housing; 2. an NTC resistor body; 3. a mounting groove; 4. an upper slide plate; 5. a lower contact plate; 6. a lower heat dissipation hole; 7. a connecting rod; 8. an electrode sheet; 9. a slide block; 10. a groove; 11. and a through hole.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Referring to fig. 1 to 3, the present utility model provides a technical solution: the utility model provides a piece formula NTC resistor, includes explosion-proof housing 1, the inside fixed mounting of explosion-proof housing 1 has NTC resistance body 2, mounting groove 3 has been seted up to the bilateral symmetry of explosion-proof housing 1, the inside movable mounting of mounting groove 3 has welding mechanism, welding mechanism includes slide-up plate 4, slide-up plate 4's bilateral symmetry fixed mounting has slider 9, the spout has been seted up corresponding slider 9 position department on the both sides inner wall of mounting groove 3, slider 9 spacing slidable mounting is in the inside of spout, through the gliding regulation of welding mechanism, conveniently welds between this NTC resistor and the circuit board, convenient operation.

In this embodiment, the top of the outer end of mounting groove 3 is provided with the arcwall face, lower louvre 6 has been seted up to the bottom of explosion-proof housing 1, the gas pocket has all been seted up at the top and the both sides of explosion-proof housing 1, NTC resistance body 2 includes ceramic shell, ceramic shell is fixed to be set up in the inside of explosion-proof housing 1, the inside fixed mounting of ceramic shell has the NTC chip, the bottom of NTC chip is provided with the lead wire, fixed mounting has electrode slice 8 on the inner wall of mounting groove 3, electrode slice 8 links to each other with the one end electrical property of lead wire respectively, conveniently presses down the regulation to upper slide 4 through the arcwall face, conveniently dispels the heat to NTC resistance body 2 through gas pocket and lower louvre 6.

In this embodiment, connecting rod 7 is installed to the bottom both sides symmetry fixed mounting of slide up 4, the bottom fixed mounting of connecting rod 7 has lower contact plate 5, be provided with soldering tin between slide up 4 and the lower contact plate 5, slot 10 has been seted up to the bottom equidistance of lower contact plate 5, through-hole 11 has been seted up to the inside equidistance of slot 10, through-hole 11 and slot 10 mutually perpendicular set up, through-hole 11 links to each other with slot 10, can set up more soldering tin between the solder joint on lower contact plate 5 and the circuit board through slot 10 to increase the steadiness of this NTC resistor, also conveniently carry out quick welding with between this NTC resistor and the circuit board.

When the chip NTC resistor is used, the NTC resistor is placed on a welding spot on a circuit board, the upper sliding plate 4 is contacted with a welding table handle and heated, soldering tin between the upper sliding plate 4 and the lower contact plate 5 can be melted, the soldering tin enters the groove 10 through the through hole 11 and downwards extrudes the upper sliding plate 4, the upper sliding plate 4 downwards slides in the mounting groove 3 through the sliding block 9 and the sliding groove, the upper sliding plate 4 drives the lower contact plate 5, the lower contact plate 5 is directly contacted with the welding spot on the circuit board, more soldering tin can be added between the lower contact plate 5 and the welding spot through the arrangement of the groove 10 and the through hole 11, so that the stability of the NTC resistor after welding is improved, the welding efficiency of the NTC resistor can be improved, and the welding mechanism is also fixed in the mounting groove 3 under the action of the soldering tin; after the welding is finished, the explosion-proof shell 1, the NTC resistor body 2 and the circuit board are in a separation state, and the NTC resistor body 2 is conveniently radiated through the lower radiating holes 6 and the air holes.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a piece formula NTC resistor, includes explosion-proof housing (1), its characterized in that, the inside fixed mounting of explosion-proof housing (1) has NTC resistance body (2), mounting groove (3) have been seted up to the bilateral symmetry of explosion-proof housing (1), the inside movable mounting of mounting groove (3) has welding mechanism, welding mechanism includes slide (4), the both sides symmetry fixed mounting of slide (4) has slider (9), the spout has been seted up corresponding slider (9) position department on the both sides inner wall of mounting groove (3), slider (9) spacing slidable mounting is in the inside of spout.

2. The chip NTC resistor of claim 1 characterized in that: the top of the outer end of the mounting groove (3) is provided with an arc surface, the bottom of the explosion-proof shell (1) is provided with a lower radiating hole (6), and the top and two sides of the explosion-proof shell (1) are provided with air holes.

3. The chip NTC resistor of claim 1 characterized in that: connecting rods (7) are symmetrically and fixedly arranged on two sides of the bottom of the upper sliding plate (4), lower contact plates (5) are fixedly arranged on the bottom of the connecting rods (7), and soldering tin is arranged between the upper sliding plate (4) and the lower contact plates (5).

4. A chip NTC resistor according to claim 3 characterized in that: grooves (10) are formed in the bottom of the lower contact plate (5) at equal intervals, and through holes (11) are formed in the grooves (10) at equal intervals.

5. The chip NTC resistor of claim 4 characterized in that: the through holes (11) are perpendicular to the grooves (10), and the through holes (11) are connected with the grooves (10).

6. The chip NTC resistor of claim 2 characterized in that: the NTC resistor body (2) comprises a ceramic shell, and the ceramic shell is fixedly arranged in the explosion-proof shell (1).

7. The chip NTC resistor of claim 6 characterized in that: an NTC chip is fixedly mounted in the ceramic shell, and a lead is arranged at the bottom of the NTC chip.

8. The chip NTC resistor of claim 7 characterized in that: an electrode plate (8) is fixedly arranged on the inner wall of the mounting groove (3), and the electrode plates (8) are respectively and electrically connected with one end of the lead wire.