CN214041553U - Hand-held transformer DC resistance tester - Google Patents

Abstract

The utility model discloses a hand-held transformer direct current resistance tester, which comprises an outer shell, a clamping cover and a heat dissipation component, wherein the clamping cover is clamped at the side surface of the outer shell, a ventilation component can ventilate in the tester, when a fan works, the inside of the tester can be dissipated, macromolecular substances are filtered due to the existence of a dustproof net, the service life of the internal components of the tester is prolonged, the dustproof net can be replaced and cleaned by unscrewing a ventilation threaded column, the threaded column of an inserting block penetrates through a first threaded hole and is connected into the inserting threaded hole by screw threads, thereby fixing a fan blade component, the connection mode is easy to disassemble and replace, when the heat dissipation component works, the clamping cover is pushed upwards, the clamping cover is clamped at the upper end of the side surface of the outer shell, the ventilation component or a blowing component leaks out, when the heat dissipation component does not work, the clamping cover is pushed downwards, the ventilation component or the blowing component is covered, so that the entering and exiting of small molecular substances can be reduced, and the sealing performance is enhanced.

Description

Hand-held transformer DC resistance tester

Technical Field

The utility model relates to the technical field of electronic machinery, specifically be a hand-held type transformer direct current resistance tester.

Background

The resistance tester is an indispensable tool for electrical safety inspection and earth work completion acceptance, and the direct current resistance tester is a new generation of testing instrument for direct current resistance of transformers, and can automatically select testing current according to power transformers of different models and display testing results at the highest speed. The DC resistance tester has the functions of storage, printing, discharge indication and the like, a built-in non-power-off memory can store measured data for a long time, and the adoption of the liquid crystal display ensures that the human-computer interface of the tester is good and is the preferred equipment in the DC resistance test work.

The traditional transformer direct current resistance tester does not pay attention to the aspect of heat dissipation, and the temperature in the instrument is easily caused to be too high, so that the service life of internal components is shortened, or a heat dissipation assembly cannot be flexibly disassembled, and is inconvenient to replace and clean.

In order to solve the problems, a handheld transformer direct current resistance tester is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hand-held type transformer direct current resistance tester, including shell body, block lid and radiator unit, block lid block can strengthen the radiating efficiency in the side of shell body, reduces the life reduction that arouses because of inside high temperature, and can dismantle radiator unit in a flexible way to the problem in the background art has been solved.

In order to achieve the above object, the utility model provides a following technical scheme: a hand-held transformer direct current resistance tester comprises an outer shell, clamping covers and a heat dissipation assembly, wherein the clamping covers are clamped on the side face of the outer shell;

the clamping cover is provided with a convex strip block and a semicircular lug, the convex strip block is fixedly arranged on one side of the convex strip block, and the semicircular lug is fixedly arranged on the positive end face of the convex strip block;

the heat dissipation assembly is provided with a ventilation component and a blowing component, the ventilation component is movably mounted on the shell hole on one side, and the blowing component is movably mounted on the shell hole on the other side.

Preferably, the convex strip blocks are matched with the concave grooves, and the semicircular convex blocks are matched with the limiting holes.

Preferably, the distance between the limiting holes formed in the same concave groove is larger than the diameter of the shell hole.

Preferably, the ventilation component is provided with ventilation screw post, dust screen and ventilation rack, and ventilation screw post threaded connection is on the ventilation rack, and dust screen movable mounting is on the ventilation rack, and ventilation rack fixed mounting is inside the shell hole.

Preferably, the blowing component is provided with a blowing net rack, a fan and a second threaded column, the blowing net rack is fixedly arranged inside the shell hole, the fan is arranged inside the shell hole, and the second threaded column is in threaded connection with the blowing net rack.

Preferably, the fan is provided with a fan blade assembly and a round seat, and the fan blade assembly is movably arranged on the round seat.

Preferably, the fan blade assembly is provided with a connecting block and a first threaded hole, the connecting block is fixedly connected to the lower end face of the fan blade assembly, and the first threaded hole is formed in one side of the connecting block.

Preferably, the round seat is provided with an inserting block threaded column, an inserting port, an inserting threaded hole and an inserting block, the inserting block threaded column is in threaded connection with one side of the inserting block, the inserting port is formed in one side of the inserting block, the inserting threaded hole is formed in one side of the inserting block, and the inserting block is fixedly connected to the side face of the round seat.

Preferably, the connecting block is matched with the plug interface.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model provides a pair of hand-held type transformer direct current resistance tester, through setting up two sets of shell holes, it is two sets of the shell hole set up in the shell body both sides, ventilation rack fixed mounting inside the shell hole, the ventilation screw post runs through dust screen threaded connection on the ventilation rack, constitutes the ventilation component, can ventilate in the tester is inside, and the component setting of blowing in the shell hole of shell body opposite side, the fan during operation just inside the tester that can dispel the heat, and because of the existence of dust screen, has filtered macromolecular material, avoids damaging tester internals, increase of service life.

2. The utility model provides a pair of hand-held type transformer direct current resistance tester, run through the dust screen threaded connection on the ventilation rack through the ventilation screw post, unscrew the ventilation screw post, the dust screen just can only paste at the ventilation rack, just can easily take out the dust screen and change this moment, wash, through unscrewing second screw post, the opposite side dust screen that is run through also can be taken out, fan blade assembly passes through the connecting block and cooperatees with the interface, but fan blade assembly block is on the round seat, and the grafting screw hole has been seted up on the connecting block, first screw hole has been seted up to interface one side, grafting piece screw post runs through first screw hole, threaded connection advances in the grafting screw hole, thereby fixed fan blade assembly, this kind of connected mode easily dismantles, change.

3. The utility model provides a hand-held transformer direct current resistance tester, when needing the heat dissipation component to work, upwards push the clamping cover, because the protruding strip block matches with the concave groove, the semicircle lug matches with the spacing hole, the clamping cover can move upwards, the semicircle lug on the clamping cover breaks away from the two sets of spacing holes at the bottom, the semicircle lug on the top of the clamping cover is clamped with the top spacing hole on the outer shell, the clamping cover is clamped at the upper end of the side surface of the outer shell, and the distance between the spacing holes arranged in the same concave groove is larger than the diameter of the shell hole, at this moment, the shell hole will be leaked, thereby the ventilation component or the blowing component is leaked, when needing no heat dissipation component to work, downwards push the clamping cover, the semicircle lug on the bottom of the clamping cover is clamped with the spacing hole at the bottom of the outer shell, the clamping cover is clamped at the lower end of the side surface of the outer shell, thereby covering the ventilation component or the blowing component, reducing the entering and exiting of the small molecular substance and enhancing the sealing performance.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the outer casing of the present invention;

FIG. 3 is a schematic view of the structure of the snap-fit cover of the present invention;

FIG. 4 is an enlarged schematic perspective view of the utility model at A;

fig. 5 is a schematic structural view of the blowing member of the present invention;

fig. 6 is a schematic view of the fan splitting structure of the present invention.

In the figure: 1. an outer housing; 11. a shell hole; 12. a concave groove; 13. a limiting hole; 2. a snap-fit cover; 21. a raised bar block; 22. a semicircular bump; 3. a heat dissipating component; 31. a ventilation member; 311. a ventilated threaded post; 312. a dust screen; 313. a ventilation net rack; 32. a blowing member; 321. a blowing net rack; 322. a fan; 3221. a fan blade assembly; 32211. connecting blocks; 32212. a first threaded hole; 3222. a round base; 32221. inserting the block threaded column; 32222. an interface; 32223. inserting a threaded hole; 32224. an insertion block; 323. a second threaded post.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, a hand-held transformer direct current resistance tester comprises an outer casing 1, a snap cover 2 and a heat dissipation assembly 3, wherein the snap cover 2 is snapped on the side surface of the outer casing 1, the outer casing 1 is provided with a casing hole 11, a concave groove 12 and a limiting hole 13, the casing hole 11 is provided with two groups, the two groups of casing holes 11 are arranged on two sides of the outer casing 1, the concave groove 12 is arranged on two sides of the outer casing 1, the limiting hole 13 is arranged inside the concave groove 12, a convex strip block 21 is matched with the concave groove 12, a semicircular lug 22 is matched with the limiting hole 13, the distance between the limiting holes 13 arranged in the same concave groove 12 is larger than the diameter of the casing hole 11, when the heat dissipation assembly 3 is needed to work, the snap cover 2 is pushed upwards, because the convex strip block 21 is matched with the concave groove 12, the semicircular lug 22 is matched with the limiting hole 13, the snap cover 2 can move upwards, and the semicircular lug 22 on the snap cover 2 is separated, when the heat dissipation assembly 3 does not work, the clamping cover 2 is pushed downwards, the semicircular lug 22 at the lowest layer of the clamping cover 2 is clamped with the limiting hole 13 at the lowest layer of the outer shell 1, the clamping cover 2 is clamped at the lower end of the side surface of the outer shell 1, so that the ventilation component 31 or the blowing component 32 is covered, the small molecular substances can be reduced, and the sealing performance is enhanced.

The clamping cover 2 is provided with a protruding strip block 21 and a semicircular lug 22, the protruding strip block 21 is fixedly installed on one side of the protruding strip block 21, and the semicircular lug 22 is fixedly arranged on the positive end face of the protruding strip block 21.

The clamping cover 2 is provided with a convex strip block 21 and a semicircular lug 22, the convex strip block 21 is fixedly arranged at one side of the convex strip block 21, the semicircular lug 22 is fixedly arranged at the positive end surface of the convex strip block 21, the ventilation component 31 is provided with a ventilation threaded column 311, a dust screen 312 and a ventilation net rack 313, the ventilation threaded column 311 is in threaded connection with the ventilation net rack 313, the dust screen 312 is movably arranged on the ventilation net rack 313, the ventilation net rack 313 is fixedly arranged in the shell hole 11, the blowing component 32 is provided with a blowing net rack 321, a fan 322 and a second threaded column 323, the blowing net rack 321 is fixedly arranged in the shell hole 11, the fan 322 is arranged in the shell hole 11, the second threaded column 323 is in threaded connection with the blowing net rack 321, the fan 322 is provided with a fan blade component 3221 and a round seat 3222, the fan component 3221 is movably arranged on the round seat 3222, the fan component 3221 is provided with a connecting block 11 and a first threaded hole 12, the connecting block 32211 is fixedly connected to the lower end surface of the fan component 3221, the first threaded hole 32212 is disposed at one side of the connecting block 32211, the round seat 3222 is provided with an insertion block threaded post 32221, an insertion port 32222, an insertion threaded hole 32223 and an insertion block 32224, the insertion block threaded post 32221 is in threaded connection with one side of the insertion block 32224, the insertion port 32222 is disposed at one side of the insertion block 32224, the insertion block 32224 is fixedly connected to a side of the round seat 3222, the connecting block 32211 is matched with the insertion port 32222, the ventilation threaded post 311 is in threaded connection with the ventilation net rack 313 through the dust screen 312, the ventilation threaded post 311 is unscrewed, the dust screen 312 is only attached to the ventilation net rack 313, the dust screen 312 can be easily taken out for replacement and cleaning, the dust screen 312 at the other side can be taken out by unscrewing the second threaded post 323, the fan blade assembly 3221 is matched with the insertion port 32222 through the connecting block 32211, the fan blade assembly 1 can be clamped on the round seat 3222, and the insertion threaded hole 23 is disposed on the connecting block 32211, first screw hole 32212 has been seted up to interface 32222 one side, grafting piece screw thread post 32221 runs through first screw hole 32212, threaded connection advances in grafting screw hole 32223, thereby fixed flabellum subassembly 3221, this kind of connected mode is easily dismantled, change, through setting up two sets of shell hole 11, two sets of shell hole 11 is seted up in shell body 1 both sides, ventilation rack 313 fixed mounting is inside shell hole 11, ventilation screw thread post 311 runs through dust screen 312 threaded connection on ventilation rack 313, constitute ventilation component 31, can ventilate in the tester inside, and blow component 32 and set up in shell hole 11 of shell body 1 opposite side, fan 322 during operation, just inside the tester that can dispel the heat, and because of the existence of dust screen 312, macromolecular substance has been filtered, avoid damaging the tester internals, increase of service life.

In summary, the following steps: the utility model discloses a hand-held type transformer direct current resistance tester, including shell body 1, the block lid 2 and radiator unit 3, the block lid 2 block is in the side of shell body 1, through setting up two sets of shell holes 11, two sets of shell holes 11 are seted up in shell body 1 both sides, ventilation rack 313 is fixed mounting inside shell hole 11, ventilation screw post 311 runs through dust screen 312 threaded connection on ventilation rack 313, constitute ventilation component 31, can ventilate in the tester, and blow component 32 sets up in shell hole 11 of shell body 1 opposite side, when fan 322 is worked, just can dispel the heat inside the tester, and because of the existence of dust screen 312, macromolecular material has been filtered, avoid damaging the tester internals, increase of service life, run through dust screen 312 threaded connection on rack ventilation 313 through ventilation screw post 311, unscrew ventilation screw post 311, dust screen 312 just can paste in ventilation rack 313, at this time, the dust screen 312 can be easily taken out for replacement and cleaning, by unscrewing the second threaded post 323, the dust screen 312 on the other side which is penetrated can also be taken out, the fan blade assembly 3221 is matched with the insertion port 32222 through the connecting block 32211, the fan blade assembly 3221 can be clamped on the round seat 3222, the connecting block 32211 is provided with an insertion threaded hole 32223, one side of the insertion port 32222 is provided with a first threaded hole 32212, the insertion block threaded post 32221 penetrates through the first threaded hole 32212, and is in threaded connection with the insertion threaded hole 32223, so as to fix the fan blade assembly 3221, the connection mode is easy to detach and replace, when the heat dissipation assembly 3 is required to work, the clamping cover 2 is pushed upwards, because the convex bar block 21 is matched with the concave groove 12, the semicircular convex block 22 is matched with the limiting hole 13, the clamping cover 2 can move upwards, the semicircular convex block 22 on the clamping cover 2 is separated from the two groups of limiting holes 13 at the lowest, and when the semicircular convex block 22 on the uppermost layer of the semicircular convex block 22 on the outer shell 2 is clamped with the uppermost layer of the limiting hole 13 arranged on the outer shell 1, the clamping cover 2 is clamped at the upper end of the side face of the outer shell body 1, the distance between the limiting holes 13 formed in the same concave groove 12 is larger than the diameter of the shell hole 11, at the moment, the shell hole 11 can be leaked out, so that the ventilation component 31 or the blowing component 32 can be leaked out, when the heat dissipation assembly 3 does not work, the clamping cover 2 is pushed downwards, when the semicircular lug 22 at the lowest layer of the clamping cover 2 is clamped with the limiting hole 13 at the lowest layer formed in the outer shell body 1, the clamping cover 2 is clamped at the lower end of the side face of the outer shell body 1, so that the ventilation component 31 or the blowing component 32 is covered, the in-out of micromolecule substances can be reduced, and the sealing performance is enhanced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a hand-held type transformer direct current resistance tester, includes shell body (1), block lid (2) and radiator unit (3), and the side at shell body (1) is covered in block lid (2) block, inside the side of shell body (1), its characterized in that are installed in radiator unit (3): the shell body (1) is provided with shell holes (11), concave grooves (12) and limiting holes (13), the shell holes (11) are arranged in two groups, the two groups of shell holes (11) are arranged on two sides of the shell body (1), the concave grooves (12) are arranged on two sides of the shell body (1), and the limiting holes (13) are arranged in the concave grooves (12);

the clamping cover (2) is provided with a convex strip block (21) and a semicircular convex block (22), the convex strip block (21) is fixedly arranged on one side of the convex strip block (21), and the semicircular convex block (22) is fixedly arranged on the front end face of the convex strip block (21);

the heat dissipation assembly (3) is provided with a ventilation component (31) and a blowing component (32), the ventilation component (31) is movably mounted on the shell hole (11) on one side, and the blowing component (32) is movably mounted on the shell hole (11) on the other side.

2. The hand-held transformer dc resistance tester of claim 1, wherein: the convex strip blocks (21) are matched with the concave grooves (12), and the semicircular convex blocks (22) are matched with the limiting holes (13).

3. The hand-held transformer dc resistance tester of claim 1, wherein: the distance between the limiting holes (13) formed in the same concave groove (12) is larger than the diameter of the shell hole (11).

4. The hand-held transformer dc resistance tester of claim 1, wherein: the ventilation component (31) is provided with a ventilation threaded column (311), a dustproof net (312) and a ventilation net rack (313), the ventilation threaded column (311) is in threaded connection with the ventilation net rack (313), the dustproof net (312) is movably installed on the ventilation net rack (313), and the ventilation net rack (313) is fixedly installed inside the shell hole (11).

5. The hand-held transformer dc resistance tester of claim 1, wherein: the blowing component (32) is provided with a blowing net rack (321), a fan (322) and a second threaded column (323), the blowing net rack (321) is fixedly arranged inside the shell hole (11), the fan (322) is arranged inside the shell hole (11), and the second threaded column (323) is in threaded connection with the blowing net rack (321).

6. The hand-held transformer direct current resistance tester of claim 5, wherein: the fan (322) is provided with a fan blade component (3221) and a round seat (3222), and the fan blade component (3221) is movably arranged on the round seat (3222).

7. The hand-held transformer direct current resistance tester of claim 6, wherein: the fan blade component (3221) is provided with a connecting block (32211) and a first threaded hole (32212), the connecting block (32211) is fixedly connected to the lower end face of the fan blade component (3221), and the first threaded hole (32212) is formed in one side of the connecting block (32211).

8. The hand-held transformer direct current resistance tester of claim 6, wherein: the round seat (3222) is provided with an insertion block threaded column (32221), an insertion port (32222), an insertion threaded hole (32223) and an insertion block (32224), the insertion block threaded column (32221) is in threaded connection with one side of the insertion block (32224), the insertion port (32222) is formed in one side of the insertion block (32224), the insertion threaded hole (32223) is formed in one side of the insertion block (32224), and the insertion block (32224) is fixedly connected to the side face of the round seat (3222).

9. The hand-held transformer dc resistance tester of claim 7, wherein: the connecting block (32211) is matched with the plug interface (32222).

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