CN216054084U

CN216054084U - High temperature resistant type NTC thermistor

Info

Publication number: CN216054084U
Application number: CN202122158505.9U
Authority: CN
Inventors: 黄林棵
Original assignee: Shenzhen Shaoxin Electronics Co ltd
Current assignee: Shenzhen Shaoxin Electronics Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-03-15
Anticipated expiration: 2031-09-08

Abstract

The utility model relates to the technical field of thermistors and discloses a high-temperature-resistant NTC thermistor which comprises a thermistor, wherein a protective sleeve is arranged on the side surface of the thermistor, a first protective sleeve and a second protective sleeve are movably sleeved on the side surface of the protective sleeve, two pieces of foam glass are arranged on the side surface of the protective sleeve, the left side and the right side of the thermistor are fixedly connected with lead wires, and sealing covers are fixedly connected to the opposite sides of the first protective sleeve and the second protective sleeve. This high temperature resistant type NTC thermistor through the mutual cooperation between lag, first lag, second lag, foam glass, lead-in wire, closing cap, thread groove and the screw thread ring to can fix two foam glass on the side surface of protective sheath, and can prevent that foam glass from taking place to remove, and then can be through lag and foam glass's high temperature resistant effect, and then can improve protective sheath inside thermistor's high temperature resistant effect, prevent that the device from receiving the damage.

Description

High temperature resistant type NTC thermistor

Technical Field

The utility model relates to the technical field of thermistors, in particular to a high temperature resistant NTC thermistor.

Background

A thermistor is a sensor resistor whose resistance value changes with changes in temperature; however, the high temperature resistant effect of the sealing compound case of the outer layer of the conventional thermistor is low, and when the temperature of the thermistor is high, the sealing compound between the sealing compound case and the thermistor or the lead wire is cracked and damaged, so that the normal use of the device is affected, and the service life of the device is reduced, so that a high temperature resistant type NTC thermistor needs to be provided to solve the problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the high-temperature-resistant NTC thermistor which has the advantages of improving the high-temperature-resistant effect of the device by a high-temperature-resistant protection mechanism, reducing the damage condition of a protective sleeve, prolonging the service life of the device and the like, and solves the problems that the sealing compound between a sealing compound shell and the thermistor or a lead wire is cracked and damaged, the normal use of the device is influenced, and the service life of the device is shortened.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a high temperature resistant type NTC thermistor, includes thermistor, thermistor's side surface is provided with the protective sheath, first lag and second lag have been cup jointed in the side surface activity of protective sheath, the side surface of protective sheath is provided with two foam glass, the equal fixedly connected with lead wire in thermistor's the left and right sides, the equal fixedly connected with closing cap in one side that first lag and second lag carried on the back mutually, the annular thread groove has been seted up on the right side of first lag, the left side fixedly connected with thread ring of second lag.

Preferably, the first protecting cover is fixedly connected with a first fixing ring on the side surface, the second protecting cover is fixedly connected with a second fixing ring on the side surface, a limiting rod is movably inserted into the first fixing ring, a stop block is fixedly connected to the left side of the limiting rod, a spring is fixedly connected to the left side of the first fixing ring, limiting holes which penetrate through the first fixing ring and the second fixing ring are formed in the first fixing ring and the second fixing ring, the limiting rod is movably inserted into the limiting holes in the first fixing ring and the limiting holes in the second fixing ring in sequence, the left end of the spring is fixedly connected with the right side of the stop block, and therefore the first fixing ring and the second fixing ring can be limited, and the first fixing ring and the second fixing ring are prevented from rotating.

Preferably, the right side of first lag and the mutual overlap joint in left side of second lag, two foam glass all sets up the semicircle ring-type, foam glass's inside wall and the side surface overlap joint of protective sheath to can insulate against heat through foam glass to the thermistor of protective sheath inside, and then can improve high temperature resistant effect.

Preferably, the left side of the foam glass is overlapped with the left side wall of the first protective sleeve, and the right side of the foam glass is overlapped with the right side wall of the second protective sleeve, so that the foam glass can be fixed on the side surface of the protective sleeve and prevented from moving left and right.

Preferably, the left side of protective sheath and the left side wall overlap joint of first lag, the right side of protective sheath and the right side wall overlap joint of second lag, the side surface of screw thread ring sets up to the screw thread form, the screw thread ring is connected with the internal thread of annular thread groove, and then can fix first lag and second lag, prevents that first lag and second lag from taking place to remove.

Preferably, the side surfaces of the first fixing ring and the second fixing ring are provided with jacks, the inside of the limiting rod is provided with a positioning hole which penetrates through the limiting rod from top to bottom, a positioning bolt is inserted in the inner part of the jack in a movable mode, and the positioning bolt is inserted in the inner part of the positioning hole in a movable mode, so that the limiting rod can be positioned and fixed, and the positioning rod is prevented from moving out of the inner part of the limiting hole.

Compared with the prior art, the utility model provides a high temperature resistant NTC thermistor, which has the following beneficial effects:

1. this high temperature resistant type NTC thermistor through the mutual cooperation between lag, first lag, second lag, foam glass, lead-in wire, closing cap, thread groove and the screw thread ring to can fix two foam glass on the side surface of protective sheath, and can prevent that foam glass from taking place to remove, and then can be through lag and foam glass's high temperature resistant effect, and then can improve protective sheath inside thermistor's high temperature resistant effect, prevent that the device from receiving the damage.

2. This high temperature resistant type NTC thermistor, through first solid fixed ring, the solid fixed ring of second, the gag lever post, the dog, a spring, spacing hole, the jack, mutually support between locating hole and the location bolt, thereby can improve the fixed effect between first lag and the second lag, prevent to take place to rotate between first lag and the second lag, and can fix a position the position of gag lever post through the location bolt, and then be convenient for connect fixedly between first lag and the second lag.

Drawings

FIG. 1 is a front sectional view of the present invention;

FIG. 2 is an enlarged view of the structure of FIG. 1 at A according to the present invention;

fig. 3 is a perspective view of the foam glass structure of the present invention.

Wherein: 1. a thermistor; 2. a protective sleeve; 3. a first protective cover; 4. a second protective cover; 5. foam glass; 6. a lead wire; 7. sealing the cover; 8. an annular thread groove; 9. a threaded ring; 10. a first retaining ring; 11. a second retaining ring; 12. a limiting rod; 13. a stopper; 14. a spring; 15. a limiting hole; 16. a jack; 17. positioning holes; 18. and (6) positioning the bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a high temperature resistant NTC thermistor includes a thermistor 1, a protective cover 2 is disposed on a side surface of the thermistor 1, the protective cover 2 is made of teflon to improve a high temperature resistant effect of the device, a first protective cover 3 and a second protective cover 4 are movably sleeved on a side surface of the protective cover 2, internal heat can be isolated by the first protective cover 3 and the second protective cover 4 to prevent the temperature of the thermistor 1 from being dissipated, two foam glasses 5 are disposed on a side surface of the protective cover 2, a right side of the first protective cover 3 and a left side of the second protective cover 4 are overlapped with each other, the two foam glasses 5 are both semi-circular, an inner side wall of the foam glass 5 is overlapped with a side surface of the protective cover 2, opposite sides of the two foam glasses 5 are overlapped with each other, and the two foam glasses 5 can form a circular column shape, and then can cup joint the side surface of the protective sleeve 2, the left side of the foam glass 5 is lapped with the left side wall of the first protective sleeve 3, the right side of the foam glass 5 is lapped with the right side wall of the second protective sleeve 4, the high temperature resistance and the heat insulation effect of the foam glass 5 can improve the high temperature resistance of the device, and further can improve the service life of the device, the left side and the right side of the thermistor 1 are fixedly connected with the lead 6, the lead 6 is fixed with the inside of the protective sleeve 2 by sealing glue, the opposite side of the first protective sleeve 3 and the second protective sleeve 4 is fixedly connected with the sealing cover 7, the inside of the sealing cover 7 is provided with round holes which are penetrated left and right, the lead 6 is mutually matched with the inside of the round holes, the lead 6 is movably inserted with the inside of the round holes, the right side of the first protective sleeve 3 is provided with an annular thread groove 8, the left side of the second protective sleeve 4 is fixedly connected with a thread ring 9, the left side of the protective sleeve 2 is lapped with the left side wall of the first protective sleeve 3, the right side of the protective sleeve 2 is lapped with the right side wall of the second protective sleeve 4, the side surface of the thread ring 9 is in a thread shape, the thread ring 9 is in threaded connection with the inside of the annular thread groove 8, the thread ring 9 can be driven to rotate in the annular thread groove 8 by rotating the second protective sleeve 4, further one side of the second protective sleeve 4 opposite to the first protective sleeve 3 is lapped with one another, the first protective sleeve 3 and the second protective sleeve 4 can be fixed, meanwhile, the left side and the right side of the protective sleeve 2 are respectively lapped with the left side wall of the first protective sleeve 3 and the right side wall of the second protective sleeve 4, the first protective sleeve 3 and the second protective sleeve 4 can be prevented from moving left and right, the side surface of the first protective sleeve 3 is fixedly connected with a first fixing ring 10, the side surface of the second protective sleeve 4 is fixedly connected with a second fixing ring 11, the opposite sides of the first fixing ring 10 and the second fixing ring 11 are mutually lapped, a limiting rod 12 is movably inserted in the first fixing ring 10, the number of the limiting rods 12 is two, the two limiting rods 12 are vertically symmetrical about the center of the first fixing ring 10, a stop 13 is fixedly connected on the left side of the limiting rod 12, a spring 14 is fixedly connected on the left side of the first fixing ring 10, limiting holes 15 which penetrate left and right are respectively formed in the first fixing ring 10 and the second fixing ring 11, two limiting holes 15 are respectively formed in the first fixing ring 10 and the second fixing ring 11, the limiting holes 15 in the first fixing ring 10 and the second fixing ring 11 are mutually communicated, the limiting rods 12 are movably inserted in the limiting holes 15 in the first fixing ring 10 and the limiting holes 15 in the second fixing ring 11 in sequence, so that the first fixing ring 10 and the second fixing ring 11 can be limited to prevent the first fixing ring 10 and the second fixing ring 11 from rotating, thereby, the first protective sleeve 3 and the second protective sleeve 4 can be limited and fixed, the threaded ring 9 is prevented from rotating out from the inside of the annular threaded groove 8, the left end of the spring 14 is fixedly connected with the right side of the stop block 13, the spring 14 is movably sleeved with the limiting rod 12, and under the action of the spring 14, the limiting effect on the limiting rod 12 can be improved, the limiting rod 12 is prevented from moving, the side surfaces of the first fixing ring 10 and the second fixing ring 11 are both provided with the jack 16, the upper side and the lower side of the first fixing ring 10 and the second fixing ring 11 are both provided with the jack 16, the jack 16 is mutually communicated with the inside of the limiting hole 15, the inside of the limiting rod 12 is provided with the positioning hole 17 which penetrates up and down, the position of the positioning hole 17 corresponds to the position of the jack 16 on the second fixing ring 11, the positioning bolt 18 is movably inserted in the jack 16 of the second fixing ring 11, and the positioning bolt 18 is inserted in the inner activity of the jack 16 on the second fixing ring 11, the positioning bolt 18 is movably inserted into the positioning hole 17, the positioning bolt 18 can be moved out of the positioning hole 17, the position of the limiting rod 12 can be moved, when the position of the positioning hole 17 corresponds to the position of the jack 16 on the first fixing ring 10, the positioning bolt 18 can be taken out and placed into the jack 16 on the first fixing ring 10, and the positioning bolt is inserted into the positioning hole 17, so that the limiting rod 12 can be limited and fixed.

When the protective sleeve is used, the first protective sleeve 3 is sleeved from the left end of the left lead wire 6, the second protective sleeve 4 is sleeved from the right end of the right lead wire 6, the second protective sleeve 4 moves leftwards, then the two pieces of foam glass 5 are respectively sleeved on the upper side and the lower side of the protective sleeve 2, when the first protective sleeve 3 and the second protective sleeve 4 move towards the protective sleeve 2, the two pieces of foam glass 5 can be sleeved, the left side of the threaded ring 9 is positioned inside the annular threaded groove 8, then the stop block 13 is pulled leftwards, the positioning hole 17 on the limiting rod 12 corresponds to the position of the jack 16 on the first fixing ring 10, the positioning bolt 18 is inserted into the jack 16 on the first fixing ring 10 and is sequentially inserted into the positioning hole 17, so that the limiting rod 12 can be limited and fixed, and then the second protective sleeve 4 rotates clockwise, the threaded ring 9 can be driven to rotate and move towards the inside of the annular threaded groove 8, one opposite sides of the first protective sleeve 3 and the second protective sleeve 4 are mutually lapped, the left sides of the protective sleeve 2 and the foam glass 5 are lapped with the left side wall of the first protective sleeve 3, the right sides of the protective sleeve 2 and the foam glass 5 are lapped with the right side wall of the second protective sleeve 4, meanwhile, the limiting holes 15 on the first fixing ring 10 and the second fixing ring 11 are mutually communicated, then the positioning bolt 18 is taken out from the positioning hole 17 and the insertion hole 16 on the first fixing ring 10, the limiting rod 12 is driven to move rightwards under the action of the spring 14, the right end of the limiting rod 12 is positioned in the limiting hole 15 on the second fixing ring 11, the positioning hole 17 corresponds to the position of the insertion hole 16 on the second fixing ring 11, and then the positioning bolt 18 is sequentially inserted into the insertion hole 16 and the positioning hole 17 on the second fixing ring 11, and the limiting rod 12 can be fixed inside the two limiting holes 15, so that the first fixing ring 10 and the second fixing ring 11 can be prevented from rotating, and the fixing effect between the first protective sleeve 3 and the second protective sleeve 4 can be improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high temperature resistant type NTC thermistor, includes thermistor (1), its characterized in that: thermistor's (1) side surface is provided with protective sheath (2), first lag (3) and second lag (4) have been cup jointed in the side surface activity of protective sheath (2), the side surface of protective sheath (2) is provided with two foam glass (5), the equal fixed connection in the left and right sides of thermistor (1) has lead wire (6), the equal fixedly connected with closing cap (7) in one side that first lag (3) and second lag (4) carried on the back mutually, annular thread groove (8) have been seted up on the right side of first lag (3), the left side fixedly connected with screw thread ring (9) of second lag (4).

2. The high temperature resistant NTC thermistor according to claim 1, wherein: the utility model discloses a safety protection cover, including first lag (3) side fixed connection have first solid fixed ring (10), the solid fixed ring of side fixed connection have second (11) of second lag (4), the inside activity of first solid fixed ring (10) is pegged graft and is had gag lever post (12), the left side fixedly connected with dog (13) of gag lever post (12), the left side fixedly connected with spring (14) of first solid fixed ring (10), spacing hole (15) that run through about all seted up in the inside of first solid fixed ring (10) and second solid fixed ring (11), gag lever post (12) in proper order with spacing hole (15) on first solid fixed ring (10) and spacing hole (15) activity grafting on the solid fixed ring (11) of second, the left end of spring (14) and the right side fixed connection of dog (13).

3. The high temperature resistant NTC thermistor according to claim 1, wherein: the right side of first lag (3) and the mutual overlap joint in left side of second lag (4), two foam glass (5) all set up the semicircle ring-type, the inside wall of foam glass (5) and the side surface overlap joint of protective sheath (2).

4. The high temperature resistant NTC thermistor according to claim 1, wherein: the left side of the foam glass (5) is in lap joint with the left side wall of the first protective sleeve (3), and the right side of the foam glass (5) is in lap joint with the right side wall of the second protective sleeve (4).

5. The high temperature resistant NTC thermistor according to claim 1, wherein: the left side of protective sheath (2) and the left side wall overlap joint of first lag (3), the right side of protective sheath (2) and the right side wall overlap joint of second lag (4), the side surface of screw thread ring (9) sets up to the screw thread form, the internal thread connection of screw thread ring (9) and annular thread groove (8).

6. The high temperature resistant NTC thermistor according to claim 2, wherein: the side surfaces of the first fixing ring (10) and the second fixing ring (11) are provided with jacks (16), the inside of the limiting rod (12) is provided with positioning holes (17) which penetrate through the limiting rod from top to bottom, positioning bolts (18) are movably inserted into the jacks (16), and the positioning bolts (18) are movably inserted into the positioning holes (17).