Circuit resistance measurement and calibration device

Abstract

The utility model discloses a circuit resistance measurement calibration device, which comprises a universal meter and a connecting shaft rotatably arranged on the rear side of the universal meter, and is characterized in that one side of the connecting shaft is provided with a bracket assembly clamped on an arm of a person, one side of the universal meter is provided with an outer side shell, and the outer side shell is provided with an inner side shell. The connecting shaft is rotatably arranged in the outer side shell, a fixing assembly for relatively fixing the outer side shell and the connecting shaft is arranged between the outer side shell and the connecting shaft, the support assembly comprises a plurality of side plates arranged on one side of the support, tensioning belts are arranged in the side plates, and the tensioning belts are connected with the connecting shaft. The two ends of the side plate are provided with buckle structures facilitating tightening of the tensioning belt, and the support assembly is arranged, so that the universal meter can be better attached to an arm when the universal meter is arranged on one side of the arm by a person; through the structural design of the penetrating groove and the fixing block, the tensioning belt can be tensioned, and the tensioning belt can be telescopically adjusted in the penetrating groove so as to be attached to the arm of a person.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit resistance measurement calibration equipment technical field, specifically a kind of circuit resistance measurement calibration device. BACKGROUND

[0002] Circuit resistance measurement calibration is generally completed by multimeter, and multimeter is generally used for handheld, then zero line and fire line are respectively touched to the two ends of resistance, resistance value of the resistance can be measured by setting multimeter gear to resistance gear. Since resistance value is measured, it can be further compared with the original resistance value to determine whether the resistance is inaccurate. Then personnel can decide whether to replace the resistance alone. In actual use, personnel cannot free both hands to connect zero line and fire line when holding multimeter, so it is necessary to place multimeter on workbench. In some areas without workbench, it is difficult to place multimeter, which causes personnel to measure and calibrate more troublesome. For this reason, people have carried out a lot of research. CONTENT OF UTILITY MODEL

[0003] The utility model solves the technical problem of providing a circuit resistance measurement calibration device, which can solve the problems in the prior art.

[0004] The utility model is implemented by the following technical solutions: the utility model relates to a circuit resistance measurement calibration device, comprising a multimeter, a connecting shaft is arranged on the rear side of the multimeter and rotates, characterized in that a bracket assembly is arranged on one side of the connecting shaft and clamped on the arm of a person, an outer shell is arranged on one side of the multimeter, the connecting shaft rotates and is arranged in the outer shell, a fixing assembly is arranged between the outer shell and the connecting shaft to fix the outer shell and the connecting shaft relative to each other, the bracket assembly comprises a plurality of side plates arranged on one side of the bracket, a tension belt is arranged in the side plate, buckle structures are arranged at both ends of the side plate to tighten the tension belt.

[0005] Further technical solutions, the buckle structure comprises fixing blocks arranged on both sides of the end of the side plate, the fixing blocks are arranged on both sides of the side plate and located in the through slot, and the tension belt passes through the through slot and winds around the outer surface of the fixing block.

[0006] Further technical solutions, the fixing assembly comprises two moving blocks arranged in the outer shell, a guide rod is arranged on one side of the moving block, the guide rod is fixedly connected with the outer shell, the guide rod slides and is inserted into the moving block, a spring is elastically arranged between the end of the guide rod and the inside of the moving block, a clamping structure is arranged between the connecting shaft and the moving block, and a pushing structure is arranged in the outer shell to push the moving block.

[0007] Further technical solutions, the outer shell is provided with a shielding plate, the connecting shaft rotates through the shielding plate.

[0008] Further technical solutions, the outer shell is provided with a matching block, the shielding plate is arranged on one side of the matching block.

[0009] Further technical solutions, the clamping structure includes a fixed ring arranged in the moving block, the fixed ring is provided with a ball, the outer surface of the connecting shaft is provided with a ring groove, a plurality of spherical grooves are arranged in the ring groove, the fixed ring is clamped into the ring groove, and the ball is abutted with the spherical groove.

[0010] Further technical solutions, the pushing structure includes two sliding plates arranged in the outer shell, the sliding plate is provided with an inclined block on one side, the moving block is provided with an inclined end surface on both sides, and the inclined block is slidably arranged in abutment with the inclined end surface.

[0011] Further technical solutions, the sliding plate and the matching block are elastically provided with buffer springs.

[0012] The beneficial effects of the utility model are: one, through the setting up of support assembly, personnel can better adhere to the arm when setting the multimeter on one side of the arm, wherein the structure design of the through slot and the fixed block can tighten the tightening belt and can adjust the expansion of the tightening belt in the through slot to fit the arm of the personnel.

[0013] Two, by setting the elastic sliding between the moving block and the guide rod, after the sliding plate slides, the moving block can slide along the guide rod through the contact of the inclined block and the inclined end surface, the ball and the fixed ring can be disconnected from the spherical groove and the ring groove, so that the multimeter and the outer shell can be adjusted relative to the connecting shaft, and the personnel can use the multimeter more conveniently. DRAWINGS

[0014] In order to facilitate the description, the utility model is described in detail by the following specific embodiments and drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of a circuit resistance measurement calibration device of the utility model;

[0016] Figure 2 It is Figure 1 It is a schematic diagram of the rear side structure of the device;

[0017] Figure 3 It is Figure 2 It is a schematic diagram of A in the device;

[0018] Figure 4 It isFigure 2 A schematic diagram of the structure after the support frame is removed;

[0019] Figure 5 for Figure 4 A cross-sectional view of the device in the middle;

[0020] Figure 6 for Figure 5 A schematic diagram at point B in the middle;

[0021] Figure 7 for Figure 6 A schematic diagram of the structure after removing the moving block;

[0022] Figure 8 for Figure 6 Schematic diagram of the moving block;

[0023] In the figure, the components are: multimeter 11, connecting shaft 12, bracket 13, side plate 14, through groove 15, tension band 16, fixing block 17, sliding plate 21, outer shell 23, baffle plate 24, tilting block 31, tilting end face 32, guide rod 33, moving block 34, mating block 35, buffer spring 36, annular groove 41, ball 51, and fixing ring 52. Detailed Implementation

[0024] like Figures 1-8 As shown, this utility model will be described in detail. For ease of description, the directions mentioned below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The projection relationship of the device is consistent in the up, down, left, right, front and back directions. The circuit resistance measurement and calibration device of this utility model includes a multimeter 11, a connecting shaft 12 rotatably arranged on the rear side of the multimeter 11, a bracket assembly that is clamped on the arm of a person on one side of the connecting shaft 12, an outer shell 23 arranged on one side of the multimeter 11, the connecting shaft 12 rotatably arranged in the outer shell 23, and a fixing assembly that fixes the outer shell 23 and the connecting shaft 12 relative to each other is provided between the outer shell 23 and the connecting shaft 12.

[0025] Advantageously, the bracket assembly includes a plurality of side plates 14 disposed on one side of the bracket 13, a tension strap 16 disposed within the side plate 14, and a buckle structure disposed at both ends of the side plate 14 for facilitating tightening of the tension strap 16.

[0026] Advantageously, the buckle structure includes fixing blocks 17 disposed on both sides of the end of the side plate 14, and the fixing blocks 17 are provided with through grooves 15 located in the side plate 14 on both sides, and the tensioning strap 16 passes through the through grooves 15 and wraps around the outer surface of the fixing blocks 17.

[0027] Beneficially, the fixed assembly includes two moving blocks 34 arranged in the outer shell 23, the moving blocks 34 are arranged with guide rods 33 on one side, the guide rods 33 are fixedly connected with the outer shell 23, the guide rods 33 are slidably inserted into the moving blocks 34, springs are elastically arranged between the ends of the guide rods 33 and the interiors of the moving blocks 34, a clamping structure is arranged between the connecting shaft 12 and the moving blocks 34, and a pushing structure is arranged in the outer shell 23 to push the moving blocks 34.

[0028] Beneficially, the outer shell 23 is arranged with a shielding plate 24, the connecting shaft 12 is arranged to rotate through the shielding plate 24, the outer shell 23 is arranged with a matching block 35, and the shielding plate 24 is arranged on one side of the matching block 35.

[0029] Beneficially, the clamping structure includes a fixed ring 52 arranged in the moving block 34, the fixed ring 52 is arranged with a ball 51, the connecting shaft 12 is arranged with a ring groove 41 on the outer surface, the ring groove 41 is arranged with a plurality of spherical grooves 42, the ball 51 is clamped into the ring groove 41 through the fixed ring 52, the ball 51 is abutted with the spherical groove 42, the spherical grooves 42 are arranged in an annular array, and the connecting shaft 12 is rotated relative to the outer shell 23 after the moving block 34 is separated from the connecting shaft 12, so that the ball 51 is clamped into the spherical groove 42 at another position.

[0030] Beneficially, the pushing structure includes two sliding plates 21 arranged in the outer shell 23, the sliding plates 21 are elastically arranged with buffer springs 36 between the sliding plates 21 and the matching block 35, the sliding plates 21 are arranged with inclined blocks 31 on one side, the moving blocks 34 are arranged with inclined end surfaces 32 on both sides, and the inclined blocks 31 are slidably arranged in abutment with the inclined end surfaces 32.

[0031] The person can measure the resistance by inserting the zero line and the live line on the multimeter 11, after using the device, the person's arm passes between the side plate 14 and the tightening belt 16, and the bracket 13 is clamped on the person's arm. The person can rotate the multimeter 11 relative to the connecting shaft 12 by pressing the sliding plate 21, then release the sliding plate 21, if the ball 51 is opposite to the spherical groove 42, the moving block 34 is re-clamped to the outer surface of the connecting shaft 12 under the action of the spring in the moving block 34, the fixed ring 52 is clamped with the ring groove 41, and the ball 51 is clamped with the spherical groove 42, so that the multimeter 11 is fixed relative to the connecting shaft 12.

[0032] The length of the tightening belt 16 can be changed by extending and retracting the part of the tightening belt 16 in the slot 15 and then clamping it to the outer surface of the fixed block 17, so that the tightening belt 16 can better fit the person's arm.

[0033] After the personnel press the slide plates 21 on both sides, the inclined block 31 on one side of the slide plate 21 pushes the inclined end surface 32, the moving block 34 slides away from the connecting shaft 12 along the guide rod 33, the fixed ring 52 and the ball 51 are away from the ring groove 41 and the spherical groove 42, at this time, the outer shell 23 and the multimeter 11 can rotate around the connecting shaft 12, then the slide plate 21 is loosened, the spring in the moving block 34 makes the moving block 34 reposition along the guide rod 33 and move towards the connecting shaft 12, the ball 51 is clamped with the spherical groove 42, and the fixed ring 52 is clamped with the ring groove 41.

[0034] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any change or replacement without creative labor is covered in the protection scope of the utility model; therefore, the protection scope of the utility model should be limited by the protection scope defined in the claims.

Claims

1. A circuit resistance measurement calibration device comprising a multimeter (11), the back side of the multimeter (11) is provided with a connecting shaft (12) which rotates, characterized in that, The connecting shaft (12) is provided with a bracket assembly clamped on the arm of a person on one side, the multimeter (11) is provided with an outer shell (23) on one side, the connecting shaft (12) is rotatably arranged in the outer shell (23), a fixing assembly is arranged between the outer shell (23) and the connecting shaft (12) to fix the outer shell (23) and the connecting shaft (12) relative to each other, the bracket assembly comprises a plurality of side plates (14) arranged on one side of the bracket (13), the side plates (14) are provided with a tightening belt (16) arranged therein, and the side plates (14) are provided with buckle structures at both ends to facilitate tightening of the tightening belt (16).

2. A circuit resistance measurement calibration device according to claim 1, characterised in that: The buckle structure comprises fixing blocks (17) arranged on both sides of the end of the side plate (14), the fixing blocks (17) are provided with through grooves (15) in the side plates (14) on both sides, and the tightening belt (16) passes through the through grooves (15) and then passes around the outer surface of the fixing blocks (17).

3. A circuit resistance measurement calibration device according to claim 1, wherein: The fixing assembly comprises two moving blocks (34) arranged in the outer shell (23), the moving blocks (34) are provided with guide rods (33) on one side, the guide rods (33) are fixedly and matchingly connected with the outer shell (23), the guide rods (33) are slidably inserted into the moving blocks (34), springs are elastically arranged between the ends of the guide rods (33) and the interiors of the moving blocks (34), a clamping structure is arranged between the connecting shaft (12) and the moving blocks (34), and a pushing structure is arranged in the outer shell (23) to push the moving blocks (34).

4. A circuit resistance measurement calibration device according to claim 3, characterised in that: The outer shell (23) is provided with a shielding plate (24), and the connecting shaft (12) rotates through the shielding plate (24).

5. A circuit resistance measurement calibration device according to claim 4, characterised in that: The outer shell (23) is provided with a matching block (35), and the shielding plate (24) is arranged on one side of the matching block (35).

6. A circuit resistance measurement calibration device according to claim 3, wherein: The clamping structure comprises a fixing ring (52) arranged in the moving block (34), the fixing ring (52) is provided with a ball (51) arranged therein, the outer surface of the connecting shaft (12) is provided with a ring groove (41), and the ring groove (41) is provided with a plurality of spherical grooves (42), the fixing ring (52) is clamped into the ring groove (41), and the ball (51) abuts against the spherical groove (42).

7. A circuit resistance measurement calibration device as claimed in claim 5, characterized in that: The pushing structure comprises two sliding plates (21) arranged in the outer shell (23), the sliding plates (21) are provided with inclined blocks (31) on one side, the moving blocks (34) are provided with inclined end faces (32) on both sides, and the inclined blocks (31) are slidably arranged in abutment with the inclined end faces (32).

8. A circuit resistance measurement calibration device according to claim 7, characterised in that: The sliding plates (21) and the matching block (35) are elastically provided with buffer springs (36).

Images