CN209858631U - Current clamp - Google Patents

Abstract

The utility model relates to a current clamp, including the tong-test ammeter main part, tong-test ammeter main part front end is equipped with the tong arm that comprises fixed tong arm and activity tong arm, be equipped with pincerlike current transformer in the tong arm, the tong-test ammeter main part includes lower lid and last lid, reciprocal anchorage forms a holding cavity down between lid and the last lid, install battery and wireless data transmission module in the holding cavity, wireless data transmission module sets up in the rear end that the tong arm was kept away from to the holding cavity, the battery sets up in the middle part of holding cavity, wireless data transmission module is connected with pincerlike current transformer electricity to receive pincerlike current transformer's current signal, the battery does wireless data transmission module provides electric power, and it realizes the transmission of data through wireless data transmission module, in order to avoid the problem that the data line brought.

Description

Current clamp

Technical Field

The utility model relates to a current detection equipment field specifically is to relate to a current clamp.

Background

The clamp ammeter is one of the ammeters and is used for measuring the current value in a circuit, which is called a current clamp for short. In electrical and electronic engineering, current clamps (or current probes) have two openable clamp probes for clamping electrical conductors around electrical equipment, and the probes do not need to be in contact with the conductive parts of the equipment, i.e. the wires of the equipment do not need to be disconnected for probe insertion, in order to measure the properties of the current on the conductors.

However, when the clamp-on ammeter is used, a measured wire needs to be directly clamped, the existing clamp-on ammeter generally measures by holding the ammeter with a hand, and during measurement, test data is transmitted to an instrument through a data line to be displayed, and the connected data line may trip a measuring person during testing, so that the personal safety of the measuring person is affected. In addition, the test is limited by the data line, when the test is performed in some complex environments, the length of the data line is easily limited, and the data line is also wound, so that the data line is easily damaged, and the test cannot be completed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a current clamp, its transmission that realizes data through wireless data transmission module to avoid the problem that the data line brought.

The specific scheme is as follows:

the utility model provides a current clamp, includes the tong-ammeter main part, and tong-ammeter main part front end is equipped with the tong arm that comprises fixed tong arm and activity tong arm, be equipped with pincerlike current transformer in the tong arm, the tong-ammeter main part includes lid and last lid down, reciprocal anchorage and formation a holding cavity between lid and the last lid down, install battery and wireless data transmission module in the holding cavity, wireless data transmission module sets up in the rear end that the tong arm was kept away from to the holding cavity, the battery sets up in the middle part of holding cavity, wireless data transmission module is connected with pincerlike current transformer electricity to receive pincerlike current transformer's current signal, the battery does wireless data transmission module provides electric power.

Furthermore, a first partition board is arranged in the middle of the lower cover body, a second partition board matched with the first partition board is arranged on the upper cover body, and when the upper cover body is fixed to the lower cover body, the first partition board and the second partition board form a battery compartment which is isolated from the containing cavity on the lower cover body.

Furthermore, the upper cover body is arranged in a hollow manner corresponding to the area of the battery compartment, so that the battery compartment is provided with an opening which is opposite to the upper cover body, and a battery cover is arranged on the opening.

Furthermore, the upper cover body forms a concave area which is complementary with the battery cover at the peripheral area of the battery chamber, and the battery cover is fixedly arranged on the concave area.

Further, lower lid and last lid are ship shape casing, the lid has along its periphery the floor that sets up down, have on the last lid along its periphery set up and with the recess that the floor phase-match set up, when on the lid is fixed to the lid down, the floor inlays to be established in the recess.

Further, the relative both sides limit of recess on the upper cover body is towards the inboard longer side of the shorter side of outside and orientation, works as when the upper cover body is fixed to the lower cover body, longer side extends to in the lower cover body.

Furthermore, the inner side of the lower cover body is provided with a platform which is abutted against the lower end face of the longer side edge of the upper cover body.

Furthermore, the wireless data transmission module is a bluetooth data transmission module.

The utility model provides a current clamp compares with prior art and has following advantage: the utility model provides a current clamp transmits the electric current data that detects through wireless data transmission module, replaces traditional wired transmission's mode, does not receive the restriction of data line, has more the convenience when the environmental test of some complicacies, does not have the problem of damaging the data line in addition, sets up wireless data transmission module and keeps away from the rear end of tong arm in addition, can avoid being surveyed the interference of wire to wireless data transmission module data transmission, and data transmission effect is better.

Drawings

Fig. 1 shows a perspective view of a current clamp.

Fig. 2 shows an exploded view of a current clamp.

Fig. 3 shows a partial explosion diagram of a current clamp.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1 and 2, the present invention provides a current clamp, which has substantially the same structure as the current clamp, and includes a clamp meter main body 1, a clamp arm 2 composed of a fixed clamp arm 20 and a movable clamp arm 22 is provided at the front end of the clamp meter main body, and a clamp-shaped current transformer (not shown in the figure) is provided in the clamp arm 2.

The difference from the conventional current clamp is that the clamp meter main body includes a lower cover 10 and an upper cover 12, the lower cover 10 and the upper cover 12 are fixed to each other to form an accommodating cavity 100, a battery 30 and a wireless data transmission module 40 are installed in the accommodating cavity 100, the wireless data transmission module 40 is disposed in the rear end of the accommodating cavity 100 away from the clamp arm 2, the battery 30 is disposed in the middle of the accommodating cavity 100, the wireless data transmission module 40 and the clamp current transformer are electrically connected through a wire (not shown) to receive a current signal generated by the clamp current transformer, and the battery 30 is electrically connected with the wireless data transmission module 40 through a wire (not shown) to provide power for the wireless data transmission module 40.

The utility model provides a current clamp transmits the electric current data that detects through wireless data transmission module, replaces traditional wired transmission's mode, does not receive the restriction of data line, has more the convenience when the environmental test of some complicacies, does not have the problem of damaging the data line in addition, sets up wireless data transmission module and keeps away from the rear end of tong arm in addition, can avoid being surveyed the interference of wire to wireless data transmission module data transmission, and data transmission effect is better.

In this embodiment, the wireless data transmission module 40 may be a bluetooth data transmission module, a WiFi data transmission module, a 2G/3G/4G data transmission module, and other existing wireless data transmission modules, which are purchased from the market, and how these wireless data transmission modules implement data transmission is also the prior art, and therefore, details are not repeated here. Among them, the wireless data transmission module 40 is preferably a bluetooth data transmission module, since the bluetooth data transmission module has a good data transmission speed at a short distance (within 100 meters) and is not susceptible to an external signal with respect to the WiFi data transmission module and the 2G/3G/4G data transmission module.

Referring to fig. 2 and 3, in the embodiment, a first partition plate 102 is disposed in the middle of the lower cover 10, and a second partition plate 122 disposed in match with the first partition plate 102 is disposed on the upper cover 12, when the upper cover 12 is fixed to the lower cover 10, the first partition plate 102 and the second partition plate 122 form a battery compartment 140 on the lower cover 10, which is isolated from the accommodating cavity 100, that is, the battery compartment 140 is isolated from the accommodating cavity 100, which not only facilitates the installation of the battery 30, but also reduces the influence of the battery on the data transmission of the wireless data transmission module 40.

Preferably, referring to fig. 2 and 3, the upper cover 12 is hollowed out in a region corresponding to the battery compartment, so that the battery compartment 140 has an opening facing the upper cover 12, and the battery cover 14 is installed on the opening, so as to facilitate installation and replacement of the battery 30.

Preferably, referring to fig. 2 and 3, the upper cover 12 forms a recessed area 120 at the peripheral area of the battery compartment 130, which is complementary to the battery cover 14, the battery cover 14 is fixedly mounted on the recessed area 120, and the battery cover 14 and the upper cover 12 are combined into a whole after the mounting is completed, so that the current clamp has a more beautiful appearance.

In this embodiment, referring to fig. 2, the lower cover 10 and the upper cover 12 are both boat-shaped shells, the lower cover 10 has a rib 104 disposed along a peripheral edge thereof, the upper cover 12 has a groove 124 disposed along a peripheral edge thereof and matched with the rib 104, when the upper cover 12 is fixed to the lower cover 10, the rib 104 is embedded in the groove 124, so as to facilitate positioning and assembling between the upper cover 12 and the lower cover 10, and improve sealing performance of a joint thereof, so as to prevent dust from entering into the accommodating cavity 100 and affecting internal components thereof.

Preferably, referring to fig. 2, the two opposite sides of the groove 124 on the upper cover 12 are a shorter side 1240 facing to the outside and a longer side 1242 facing to the inside, when the upper cover 12 is fixed to the lower cover 10, the longer side 1242 extends into the lower cover 10, the two sides of the groove 124 are short and long, and the longer side 1242 is located at the inside, so as to further increase the sealing performance at the joint between the upper cover 12 and the lower cover 10.

Preferably, referring to fig. 2, the inner side of the lower cover 12 has a platform 106 abutting against the lower end surface of the longer side 1242 of the upper cover 10, and the platform 106 not only can limit the longer side 1242, but also can further increase the sealing performance of the joint between the upper cover 12 and the lower cover 10 when the platform abuts against the longer side 1242.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. The utility model provides a current clamp, includes the tong-ammeter main part, tong-ammeter main part front end is equipped with the tong arm that constitutes by fixed tong arm and activity tong arm, be equipped with pincerlike current transformer in the tong arm, its characterized in that: the clamp meter main body comprises a lower cover body and an upper cover body, the lower cover body and the upper cover body are fixed with each other to form a containing cavity, a battery and a wireless data transmission module are installed in the containing cavity, the wireless data transmission module is arranged in the rear end, far away from the clamp arm, of the containing cavity, the battery is arranged in the middle of the containing cavity, the wireless data transmission module is electrically connected with the clamp current transformer to receive a current signal of the clamp current transformer, and the battery provides power for the wireless data transmission module.

2. The current clamp of claim 1, wherein: the middle part of the lower cover body is provided with a first clapboard, the upper cover body is provided with a second clapboard matched with the first clapboard, and when the upper cover body is fixed on the lower cover body, the first clapboard and the second clapboard form a battery bin which is isolated from the containing cavity on the lower cover body.

3. The current clamp of claim 2, wherein: the upper cover body is arranged in a hollow manner corresponding to the area of the battery bin, so that the battery bin is provided with an opening which is just opposite to the upper cover body, and a battery cover is arranged on the opening.

4. The current clamp of claim 3, wherein: the upper cover body forms a concave area which is complementary with the battery cover in the peripheral area of the battery bin, and the battery cover is fixedly arranged on the concave area.

5. The current clamp of claim 1, wherein: the lower cover body and the upper cover body are both ship-shaped shells, the lower cover body is provided with a ribbed plate arranged along the peripheral edge of the lower cover body, the upper cover body is provided with a groove arranged along the peripheral edge of the upper cover body and matched with the ribbed plate, and when the upper cover body is fixed on the lower cover body, the ribbed plate is embedded in the groove.

6. The current clamp of claim 5, wherein: go up the relative both sides limit of recess on the lid and for the short side towards the outside and towards the inboard longer side, work as when going up the lid and fixing to down on the lid, longer side extends to in the lid down.

7. The current clamp of claim 6, wherein: the inner side of the lower cover body is provided with a platform which is propped against the lower end face of the longer side edge of the upper cover body.

8. The current clamp of claim 1, wherein: the wireless data transmission module is a Bluetooth data transmission module.