CN210665854U - Voltage sensor - Google Patents

Abstract

The utility model discloses a voltage sensor, including the sensor body, two at least inserts are installed to a sensor body terminal surface, the inserts inner wall is provided with the internal thread, the sensor is provided with dustproof subassembly in the one end at inserts place, dustproof subassembly includes at least two respectively with inserts threaded connection's dustproof stopper, all dustproof stopper upper end all is connected with the shield of hugging closely with a sensor body terminal surface jointly through the mounting. In with the dust plug screw in inserts to in dust and the steam that prevents in the air got into the inserts, avoid the internal thread of corrosion inserts, the shield can be kept apart the one end of sensor body with the external world, thereby further protect the inserts not corroded.

Description

Voltage sensor

Technical Field

The utility model relates to a technical field of sensor, in particular to voltage sensor.

Background

The voltage sensor is a kind of detector, which can sense the information of the voltage to be measured and convert the sensed information into electric signal meeting the requirement of certain standard or other information output in required form according to certain rule, so as to meet the requirement of information transmission, processing, storage, display, record, control, etc. the voltage sensor is widely used in electric power, electronic, inverter, switch power supply, AC frequency-varying speed regulation and other fields.

Chinese patent with publication number CN206684214U discloses a multi-functional embedded voltage sensor, and this sensor includes the voltage sensor body, and the outside of voltage sensor body is provided with the voltage sensor shell body, and the inside of voltage sensor shell body is provided with copper insert, ceramic capacitor, copper post, secondary butt joint hole and electric capacity, and ceramic capacitor includes first ceramic capacitor and second ceramic capacitor, and the inside of copper insert all is provided with the internal thread. The utility model discloses a ceramic capacitor, electric capacity and copper guide pin that set up can realize plug-and-play, and convenient to use saves space.

However, the multifunctional embedded voltage sensor has the following defects: when the sensor is idle in a warehouse, the internal threads of the copper insert can be corroded by water vapor and dust in the air, so that the normal use of the sensor is influenced, and therefore the improvement is needed.

SUMMERY OF THE UTILITY MODEL

To the technical defect, the utility model aims at providing a voltage sensor can prevent the internal thread of inserts by the corrosion when idle.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a voltage sensor, includes the sensor body, two at least inserts are installed to a sensor body terminal surface, the inserts inner wall is provided with the internal thread, the sensor is provided with dustproof subassembly in the one end at inserts place, dustproof subassembly include at least two respectively with inserts threaded connection's dustproof stopper, all dustproof stopper upper end all is connected with the shield of hugging closely with a sensor body terminal surface through the mounting jointly.

Through adopting above-mentioned technical scheme, in the plug screw in inserts will prevent that dust and steam in the air from getting into the inserts, avoid the internal thread of corrosion inserts, the shield can be kept apart the one end of sensor body with the external world, thereby further protect the inserts not corroded.

The utility model discloses further set up to: the fixing piece comprises four fixing blocks arranged on the upper end face of the dustproof cover at intervals along the circumferential direction, each fixing block penetrates through the dustproof cover, and all the fixing blocks on the dustproof cover are connected with a fixing round cover with an opening facing the dustproof cover

Through adopting above-mentioned technical scheme, behind the plug screw in inserts that will prevent dust, establish the one end at the sensor body with the shield cover to make the fixed block on the plug wear to establish the shield, then will fix the dome and be connected with the one end of fixed block, thereby fix the shield between plug and fixed dome.

The utility model discloses further set up to: all one side of fixed block orientation fixed dome inside wall all is connected with fixed awl piece, fixed dome inwards is provided with the turn-ups with fixed awl piece joint in open-ended edge.

Through adopting above-mentioned technical scheme, after installing the shield, install fixed dome on the fixed block for fixed awl piece and fixed dome joint on the fixed block, thereby fix the shield between dust plug and fixed dome.

The utility model discloses further set up to: and the middle part of the inner top wall of the fixed circular cover is connected with a fastening spring.

Through adopting above-mentioned technical scheme, will fix the dome and fix the back on the fixed block, fastening spring receives tensile force that can give fixed dome when the extrusion to make the fixed cone block on the tight fixed block of turn-ups top on the fixed dome, prevent that fixed dome is not hard up, increase the connection stability of shield.

The utility model discloses further set up to: and one end of the fastening spring, which faces the dust cover, is connected with a fastening circular plate.

Through adopting above-mentioned technical scheme, the area of contact of fastening spring and shield can be increased to the fastening plectane to ensure that the tensioning force of fastening spring can act on and fix the middle part of dome all the time, guarantee the fastening effect.

The utility model discloses further set up to: and a sealing ring is connected at one side edge of the dustproof cover facing the sensor body.

Through adopting above-mentioned technical scheme, when the shield was fixed in sensor body one end, the sealing washer can receive the extrusion and produce deformation to fill up the space between shield and the sensor and be full of, thereby improve the leakproofness of shield.

The utility model discloses further set up to: the side wall of the dust cover is in threaded connection with at least two limiting bolts for tightly pushing the side wall of the sensor body at intervals around the axis of the dust cover.

Through adopting above-mentioned technical scheme, the spacing bolt of screwing for spacing bolt top tight sensor body lateral wall, there is certain frictional force between spacing bolt and the sensor body lateral wall, thereby prevents that the shield lateral wall from breaking away from the one end of sensor body.

The utility model discloses further set up to: and the limiting bolt is sleeved with a spring washer.

Through adopting above-mentioned technical scheme, can compress tightly spring washer when screwing spacing bolt to make spring washer can give a tensile force of spacing bolt, make the pressure increase between the internal thread on the external screw thread of spacing bolt and the shield, thereby increase frictional force prevents that spacing bolt is not hard up.

To sum up, the utility model discloses following beneficial effect has:

the dustproof assembly can prevent dust and water vapor in the air from entering the insert, so that the internal thread of the insert is prevented from being corroded.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is an exploded view of the embodiment;

3 fig. 33 3 is 3 a 3 schematic 3 sectional 3 view 3 of 3 the 3 plane 3 a 3- 3 a 3 in 3 fig. 32 3. 3

Description of reference numerals: 1. a sensor body; 11. an insert; 2. a dust-proof assembly; 21. a dust plug; 22. a dust cover; 23. a fixing member; 231. a fixed block; 232. fixing the conical block; 233. fixing the round cover; 2331. flanging; 234. a fastening spring; 235. fastening a circular plate; 3. a seal ring; 4. a limit bolt; 5. a spring washer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a voltage sensor, as shown in fig. 1, fig. 2, includes sensor body 1, and 1 terminal surface of sensor body inlays and is equipped with three inserts 11, and the internal thread has been seted up to the inside cavity of inserts 11 and inner wall, and sensor body 1 is provided with dustproof subassembly 2 in the one end at inserts 11 place, and dustproof subassembly 2 can prevent that dust and steam in the air from getting into inserts 11 in, avoids inserts 11's internal thread to be corroded.

As shown in fig. 2, the dust-proof assembly 2 includes three dust plugs 21 respectively connected with the inserts 11 by screw threads, and the dust plugs 21 can be made of hard rubber, so that the dust plugs 21 have certain deformation capability, and can deform when the dust plugs 21 are screwed into the inserts 11, so that gaps between the dust plugs 21 and the internal threads of the inserts 11 are filled, and dust and water vapor in the air are prevented from entering the inserts 11. The length of the dust plug 21 is the same as the depth of the insert 11, and the upper ends of all the dust plugs 21 are connected with a dust cap 22 which is tightly attached to one end face of the sensor body 1 and has a U-shaped section through a fixing piece 23. The dust cap 22 can isolate one end of the sensor body 1 from the outside, thereby further protecting the insert 11 from corrosion.

As shown in fig. 3, three limit bolts 4 for tightly supporting the side wall of the sensor body 1 are screwed on the side wall of the dust cap 22 at intervals around the axis of the dust cap. The limit bolt 4 is screwed, so that the limit bolt 4 tightly pushes the side wall of the sensor body 1, certain friction force exists between the limit bolt 4 and the side wall of the sensor body 1, and the side wall of the dust cover 22 is prevented from being separated from one end of the sensor body 1. The limiting bolt 4 is sleeved with a spring washer 5. The spring washer 5 is pressed when the limiting bolt 4 is screwed, so that the spring washer 5 can give a tensile force to the limiting bolt 4, the pressure between the external thread of the limiting bolt 4 and the internal thread on the dust cover 22 is increased, the friction force is increased, and the limiting bolt 4 is prevented from loosening.

As shown in fig. 3, a sealing ring 3 is fixedly connected to one side edge of the dust cap 22 facing the dust plug 21. When the dust cap 22 is fixed at one end of the sensor body 1, the sealing ring 3 is squeezed and deformed, so that the gap between the dust cap 22 and the sensor is filled, and the sealing performance of the dust cap 22 is improved.

As shown in fig. 3, the fixing member 23 includes four fixing blocks 231 fixedly connected to the upper end surface of the dust plug 21 at intervals in the circumferential direction, each fixing block 231 penetrates through the dust cap 22, and all the fixing blocks 231 on each dust plug 21 are commonly connected to a fixing round cap 233 having an opening facing the dust plug 21. The fixed round cover 233 is made of hard rubber, one side of all the fixed blocks 231 facing the inner side wall of the fixed round cover 233 is fixedly connected with a triangular fixed cone block 232, a flange 2331 clamped with the fixed cone block 232 is formed inwards at the edge of the opening of the fixed round cover 233 in an integrated mode, after the dustproof plug 21 is screwed into the insert 11, the dustproof cover 22 is sleeved at one end of the sensor body 1, the fixed block 231 on the dustproof plug 21 penetrates through the dustproof cover 22, then the fixed round cover 233 is sleeved on the fixed block 231, and the flange 2331 of the fixed round cover 233 is pulled by hand to be tightly attached to one side face of the fixed cone block 232, so that clamping is formed, and the dustproof cover 22 is fixed between the dustproof plug 21 and the fixed round cover 233.

As shown in fig. 3, after the dust cap 22 is mounted, the fixing dome 233 is mounted on the fixing block 231, so that the fixing cone 232 on the fixing block 231 is engaged with the fixing dome 233, thereby fixing the dust cap 22 between the dust plug 21 and the fixing dome 233. The middle part of the inner top wall of the fixed round cover 233 is fixedly connected with a fastening spring 234, and one end of the fastening spring 234 facing the dust cover 22 is connected with a fastening round plate 235. After the fixing round cover 233 is fixed on the fixing block 231, the fastening spring 234 can apply a tension to the fixing round cover 233 while being pressed, so that the flange 2331 on the fixing round cover 233 abuts against the fixing tapered block 232 on the fixing block 231, the fixing round cover 233 is prevented from loosening, and the connection stability of the dust cap 22 is improved. The fastening circular plate 235 can increase the contact area between the fastening spring 234 and the dust cap 22, thereby ensuring that the tension of the fastening spring 234 can always act on the middle part of the fixed circular cap 233, and ensuring the fastening effect.

The installation process comprises the following steps:

firstly, screwing the dustproof plug 21 into the insert 11; then, the dust cap 22 is sleeved on the sensor body 1, so that the fixing block 231 penetrates through the dust cap 22, and then the fixing round cap 233 is clamped with the fixing cone block 232 on the fixing block 231; and finally, screwing the limit bolt 4 to finish the installation.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims (8)

1. The utility model provides a voltage sensor, includes sensor body (1), two at least inserts (11) are installed to a terminal surface of sensor body (1), inserts (11) inner wall is provided with internal thread, its characterized in that: the sensor body (1) is provided with dustproof assembly (2) in the one end at inserts (11) place, dustproof assembly (2) include at least two respectively with inserts (11) threaded connection's dustproof stopper (21), all dustproof stopper (21) upper end all is connected with shield (22) of hugging closely with a sensor body (1) terminal surface through mounting (23) jointly.

2. A voltage sensor according to claim 1, wherein: fixing piece (23) include four along the circumference interval set up in fixed block (231) of shield (21) up end, every fixed block (231) all run through out shield (22), every all fixed block (231) on shield (21) are connected with opening towards fixed dome (233) of shield (22) jointly.

3. A voltage sensor according to claim 2, wherein: all one side of fixed block (231) towards fixed dome (233) inside wall all is connected with fixed cone (232), fixed dome (233) inwards is provided with turn-ups (2331) with fixed cone (232) joint in the open-ended edge.

4. A voltage sensor according to claim 2, wherein: the middle part of the inner top wall of the fixed round cover (233) is connected with a fastening spring (234).

5. A voltage sensor according to claim 4, wherein: one end of the fastening spring (234) facing the dust cover (22) is connected with a fastening circular plate (235).

6. A voltage sensor according to claim 1, wherein: the dustproof cover (22) is connected with a sealing ring (3) towards one side edge of the sensor body (1).

7. A voltage sensor according to claim 1, wherein: the side wall of the dust cover (22) is connected with at least two side wall limiting bolts (4) for tightly pushing the sensor body (1) at intervals around the axis of the dust cover at screw threads.

8. A voltage sensor according to claim 7, wherein: and the limiting bolt (4) is sleeved with a spring washer (5).

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