CN211206625U - Resistance measuring clamp - Google Patents
Resistance measuring clamp Download PDFInfo
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- CN211206625U CN211206625U CN201921381681.5U CN201921381681U CN211206625U CN 211206625 U CN211206625 U CN 211206625U CN 201921381681 U CN201921381681 U CN 201921381681U CN 211206625 U CN211206625 U CN 211206625U
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- 239000002184 metal Substances 0.000 claims abstract description 185
- 229910052751 metal Inorganic materials 0.000 claims abstract description 185
- 238000005259 measurement Methods 0.000 claims abstract description 31
- 230000009471 action Effects 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims description 41
- 238000002788 crimping Methods 0.000 claims description 3
- 239000011324 bead Substances 0.000 description 38
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000005307 ferromagnetism Effects 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a resistance measurement anchor clamps, this resistance measurement anchor clamps include: the device comprises a shell, a micro-distance slide block, a first metal slide block and a second metal slide block; the micro-distance slide block, the first metal slide block and the second metal slide block are all arranged in the shell; the upper side of the macro slide block is provided with a guide convex edge with a triangular cross section; the shell is provided with a guide opening, and the guide opening is opposite to the edge of the guide convex edge; the first metal sliding block and the second metal sliding block are respectively arranged at two sides of the guide convex edge and can be respectively connected with two poles of the resistance measuring instrument; and the first electric wire and the second electric wire of the resistance to be measured are separated from each other under the action of the guide rib after entering from the guide port, the first electric wire is clamped between the guide rib and the first metal slide block, and the second electric wire is clamped between the guide rib and the second metal slide block. This scheme can improve the efficiency of measuring resistance between two electric wires at a distance.
Description
Technical Field
The utility model relates to an electrical engineering technical field, in particular to resistance measurement anchor clamps.
Background
The resistance represents the size of the current blocking effect of a conductor in physics, is an important attribute of the conductor, and the resistance of an object needs to be measured in industrial production and scientific research. In an actual resistance measurement scenario, due to the limitation of product structure, it is often necessary to measure the resistance between two wires that are relatively close to each other.
At present, a universal meter is generally used for measuring the resistance between two electric wires which are relatively close to each other, and the specific method is to respectively contact two poles of the universal meter with the two electric wires to be measured, so that the resistance between the two electric wires to be measured is determined according to the degree displayed by the universal meter.
Aiming at the method for measuring the resistance between two wires which are relatively close to each other at present, when two poles of a multimeter are respectively contacted with two wires to be measured, the two poles of the multimeter are often contacted due to the fact that the distance between the two wires to be measured is small, so that a measurer needs to spend a long time to complete the measurement of the resistance, and the efficiency of measuring the resistance between the two wires which are relatively close to each other is low.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a resistance measurement anchor clamps can improve the efficiency of measuring resistance between two nearer electric wires at a distance.
An embodiment of the utility model provides a resistance measurement anchor clamps, include: the device comprises a shell, a micro-distance slide block, a first metal slide block and a second metal slide block;
The micro-distance slide block, the first metal slide block and the second metal slide block are all arranged inside the shell;
The upper side of the macro slide block is provided with a guide convex edge with a triangular cross section;
The shell is provided with a guide opening, and the guide opening is opposite to the edge of the guide convex edge;
The first metal sliding block and the second metal sliding block are respectively arranged on two sides of the guide convex edge, and the first metal sliding block and the second metal sliding block can be respectively connected with two poles of a resistance measuring instrument;
And a first electric wire and a second electric wire of the resistance to be measured are separated from each other under the action of the guide rib after entering from the guide opening, the first electric wire is clamped between the guide rib and the first metal slide block, and the second electric wire is clamped between the guide rib and the second metal slide block.
Alternatively,
A first wire pressing column in a columnar shape is arranged at the upper part of the first metal sliding block, the axis of the first wire pressing column is parallel to the axis of the guide convex rib, the length of the first wire pressing column along the axis direction is larger than the diameter of the guide opening, and the first wire is clamped between the first wire pressing column and the guide convex rib;
The upper portion of the second metal sliding block is provided with a second columnar wire pressing column, the axis of the second wire pressing column is parallel to the axis of the guide convex rib, the length of the second wire pressing column along the axis direction is larger than the diameter of the guide opening, and the second wire is clamped between the second wire pressing column and the guide convex rib.
Alternatively,
The resistance measurement jig further includes: a microswitch, an electromagnet and a power supply;
The micro switch is arranged at the bottom of the macro slide block, wherein the macro slide block is positioned between the micro switch and the guide port;
The first contact of the microswitch is connected with one pole of the power supply, the other pole of the power supply is connected with one wiring terminal of the electromagnet, and the other wiring terminal of the electromagnet is connected with the second contact of the microswitch;
The micro-distance slider is used for moving towards a direction close to the micro-switch after being pushed by the first electric wire and the second electric wire so as to enable the first contact and the second contact in the micro-switch to be communicated, and moving towards a direction far away from the micro-switch after being pulled by the first electric wire and the second electric wire so as to enable the first contact and the second contact in the micro-switch to be disconnected;
The electromagnet is used for attracting the first metal sliding block and the second metal sliding block to move in the direction away from the guide opening through magnetic force when the first contact and the second contact in the microswitch are communicated, so that the distance between the first wire pressing column and the second wire pressing column and the guide convex edge is reduced.
Alternatively,
The first metal sliding block is connected with the shell through a first spring;
The second metal sliding block is connected with the shell through a second spring;
The first spring is used for driving the first metal sliding block to move towards the direction close to the guide opening after the first contact and the second contact in the microswitch are disconnected, so that the first metal sliding block is reset;
And the second spring is used for driving the second metal sliding block to move towards the direction close to the guide opening after the first contact and the second contact in the microswitch are disconnected, so that the second metal sliding block is reset.
Alternatively,
The electromagnet comprises an electromagnetic head in a hemispherical structure, and the hemispherical surface of the electromagnetic head is opposite to the first metal sliding block and the second metal sliding block;
And the electromagnetic head is used for generating electromagnetic force after the first contact and the second contact in the microswitch are communicated, and attracting the first metal sliding block and the second metal sliding block.
Alternatively,
And an insulating layer is arranged on the hemispherical surface of the electromagnetic head.
Alternatively,
The first and second crimping legs may be connected to two poles of the resistance measuring instrument, respectively.
Alternatively,
The resistance measuring instrument includes: a multimeter.
According to the technical scheme, the micro-distance sliding block is provided with the guide protruding edge, the edge of the guide protruding edge is opposite to the guide opening in the shell, after the first electric wire and the second electric wire of the resistor to be measured enter from the guide opening, the first electric wire and the second electric wire can be separated from each other under the action of the guide protruding edge, the first electric wire can be clamped between the first metal sliding block and the guide protruding edge, the second electric wire can be clamped between the second metal sliding block and the guide protruding edge, so that the first electric wire and the second electric wire are respectively contacted with the first metal sliding block and the second metal sliding block, the first metal sliding block and the second metal sliding block are respectively connected with two poles of the resistance measuring instrument, and the resistance between the first electric wire and the second electric wire can be measured through the resistance measuring instrument. Therefore, when the distance between the two wires is small, the two wires can be connected to the two poles of the resistance measuring instrument respectively only by inserting the two wires into the guide port, so that the resistance between the two wires can be measured by the resistance measuring instrument, the operation process is quick and convenient, the wires to be measured and the resistance measuring instrument do not need to be connected in a long time, and the efficiency of measuring the resistance between the two wires at a short distance can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a resistance measuring fixture according to an embodiment of the present invention;
Fig. 2 is a schematic view of a first metal slider and a second metal slider according to an embodiment of the present invention;
Fig. 3 is a schematic diagram of another resistance measuring fixture provided by an embodiment of the present invention;
Fig. 4 is a schematic diagram of another resistance measuring clamp according to an embodiment of the present invention.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments, based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention.
As shown in fig. 1, the embodiment of the utility model provides a resistance measurement anchor clamps includes: the micro-distance slide block comprises a shell 10, a micro-distance slide block 20, a first metal slide block 30 and a second metal slide block 40;
The macro slide 20, the first metal slide 30 and the second metal slide 40 are all positioned inside the shell 10;
The upper side of the macro slide block 20 is provided with a guide convex rib 201 with a triangular section;
The shell 10 is provided with a guide opening 101, and the guide opening 101 is opposite to the edge of the guide convex rib 201;
The first metal slide block 30 and the second metal slide block 40 are respectively arranged at two sides of the guide rib 201, and the first metal slide block 30 and the second metal slide block 40 can be respectively connected with two poles of the resistance measuring instrument;
After entering from the guide port 101, the first wire and the second wire of the resistance to be measured can be separated from each other under the action of the guide rib 201, the first wire can be clamped between the guide rib 201 and the first metal slide block 30, and the second wire can be clamped between the guide rib 201 and the second metal slide block 40.
The embodiment of the utility model provides an in, be provided with the direction bead on the microspur slider, and the edge of direction bead is relative with the guide mouth on the casing, after the first electric wire and the second electric wire of awaiting measuring resistance got into from the guide mouth, first electric wire and second electric wire can alternate segregation under the effect of direction bead, and first electric wire can be pressed from both sides between first metal block and direction bead, the second electric wire can be pressed from both sides between second metal block and direction bead, thereby make first electric wire and second electric wire contact with first metal block and second metal block respectively, and first metal block and second metal block are connected with the two poles of the earth of resistance measuring instrument respectively, thereby can measure the resistance between first electric wire and the second electric wire through the resistance measuring instrument. Therefore, when the distance between the two wires is small, the two wires can be connected to the two poles of the resistance measuring instrument respectively only by inserting the two wires into the guide port, so that the resistance between the two wires can be measured by the resistance measuring instrument, the operation process is quick and convenient, the wires to be measured and the resistance measuring instrument do not need to be connected in a long time, and the efficiency of measuring the resistance between the two wires at a short distance can be improved.
Alternatively, on the basis of the resistance measuring jig shown in fig. 1, in order to make the first metal slider 30 and the second metal slider 40 better contact with the electric wire of the resistance to be measured, a wire pressing column may be provided on the first metal slider 30 and the second metal slider 40, respectively, and the electric wire of the resistance to be measured is pressed on both sides of the guide rib 201 by the wire pressing column. The specific structure of the first metal slider 30 and the second metal slider 40 is shown in fig. 2.
The upper part of the first metal sliding block 30 is provided with a first wire pressing column 301 which is columnar, the axis of the first wire pressing column 301 is parallel to the axis of the guide convex rib 201, the length of the first wire pressing column 301 along the axis direction is greater than the diameter of the guide opening 101, and the first wire pressing column 301 is used for being matched with the guide convex rib 201 to clamp a first wire between the first wire pressing column 301 and the guide convex rib 201;
The upper portion of the second metal sliding block 40 is provided with a second wire pressing column 401 which is in a column shape, the axis of the second wire pressing column 401 is parallel to the axis of the guiding convex rib 201, the length of the second wire pressing column 401 along the axis direction is greater than the diameter of the guiding opening 101, and the second wire pressing column 401 is used for being matched with the guiding convex rib 201 to clamp a second wire between the second wire pressing column 401 and the guiding convex rib 201.
The embodiment of the utility model provides an in, the axis of first line ball post and second line ball post all parallels with the axis of direction bead, after two electric wires of waiting to measure resistance are inserted from the guide mouth, first line ball post and second line ball post can be to the direction motion that is close to the direction bead, and then can press from both sides two electric wires respectively between first line ball post and direction bead and between second line ball post and direction bead, first line ball post and second line ball post adopt columnar structure, make first line ball post and second line ball post contact with the electric wire of waiting to measure resistance more closely, and then guarantee the accuracy of the resistance value of measuring.
The embodiment of the utility model provides an in, first line ball post and second line ball post are the columnar structure, and specific first line ball post and second line ball post can be for cylinder or triangular prism. When first line ball post and second line ball post were cylinder or triangular prism, can be for line contact between first line ball post and second line ball post and the direction bead to can carry out the centre gripping to the electric wire of measuring resistance more closely, avoid measuring resistance in-process first line ball post or second line ball post and electric wire contact failure to lead to the measuring result mistake. Specifically, when first line ball post and second line ball post are the triangular prism, the edge of first line ball post and second line ball post all is relative with the direction bead, all has an angle pointing direction bead in first line ball post and the second line ball post cross section triangle-shaped promptly.
The embodiment of the utility model provides an in, first line ball post and second line ball post are greater than the diameter of guide mouth along the length of its axis direction, correspondingly, the length of direction bead along its axis direction also is greater than the diameter of guide mouth, after the electric wire of measuring resistance is inserted from the guide mouth like this, two electric wires of measuring resistance are located between first line ball post and the direction bead and between second line ball post and the direction bead respectively, guarantee that first line ball post and second line ball post can carry out the centre gripping to two electric wires of measuring resistance, thereby guarantee that first line ball post and second line ball post can well contact with two electric wires of measuring resistance.
The embodiment of the utility model provides an in, the material of first line ball post and second line ball post can be the copper alloy, can reduce the resistance value of first line ball post and second line ball post like this to reduce the influence of the resistance value of first line ball post and second line ball post to measuring result, further guarantee the accuracy of measuring resistance value.
Alternatively, on the basis of the first metal slider 30 and the second metal slider 40 shown in fig. 2, as shown in fig. 3, the resistance measuring jig may further include: a microswitch 50, an electromagnet 60 and a power supply 70;
The micro switch 50 is arranged at the bottom of the macro slide block 20, wherein the macro slide block 20 is positioned between the micro switch 50 and the guide port 10;
A first contact 501 on the microswitch 50 is connected with one pole of the power supply 70, the other pole of the power supply 70 is connected with one terminal on the electromagnet 60, and the other terminal on the electromagnet 60 is connected with a second contact 502 on the microswitch 50;
The micro-distance slider 20 is used for moving towards the direction close to the micro-switch 50 after being pushed by the first wire and the second wire so as to connect the first contact 501 and the second contact 502 on the micro-switch 50, and moving towards the direction far from the micro-switch 50 after being pulled by the first wire and the second wire so as to disconnect the first contact 501 and the second contact 502 on the micro-switch 50;
And an electromagnet 60 for attracting the first and second metal sliders 30 and 40 to move away from the guide opening 101 by magnetic force when the first and second contacts 501 and 502 of the microswitch 50 are communicated with each other, so that the distances between the first and second wire pressing columns 301 and 401 and the guide rib 201 are reduced.
The embodiment of the utility model provides an in, bottom at the microspur slider is provided with micro-gap switch, after two electric wires that are to measure resistance are inserted from the guiding opening, two electric wires that are to measure resistance can produce thrust to the microspur slider, the microspur slider can be to micro-gap switch's direction motion under this thrust effect, the microspur slider can trigger micro-gap switch to micro-gap switch's direction motion and close, later the power, electro-magnet and micro-gap switch constitute closed circuit, make the electro-magnet produce the electromagnetic force, the electromagnetic force can attract first metal slider and second metal slider to the direction motion of keeping away from the guiding opening after producing the electromagnetic force. Because the cross sectional shape of direction bead is triangle-shaped, and the edge of direction bead is relative with the guide mouth, first metal sliding block and second metal sliding block to keeping away from the direction motion of guide mouth can make first line ball post and second line ball post and the distance between the direction bead reduce to can press from both sides two electric wires of volume to be measured resistance between first line ball post and direction bead and between second line ball post and the direction bead respectively.
The embodiment of the utility model provides an in, two electric wires of the volume of awaiting measuring resistance can promote the microspur slider to the micro-gap switch direction slight motion, and the microspur slider can trigger the micro-gap switch closure to the micro-gap switch motion, and the micro-gap switch closure can make the electro-magnet produce the electromagnetic force, and the produced electromagnetic force of electro-magnet can attract first metal slider and the motion of second metal slider to press from both sides two electric wires of the volume of awaiting measuring resistance between first line ball post and direction bead and between second line ball post and the direction bead respectively. Therefore, when measuring the resistance between two electric wires, only two electric wires need to be inserted from the guide port, and smaller thrust is applied to the two electric wires to trigger the micro switch to be closed, so that the two electric wires can be connected with two poles of the resistance measuring instrument respectively, the measurement of the resistance between the two electric wires is realized, other complex operations are not needed, and the use experience of a user is provided.
In the embodiment of the present invention, when the first wire and the second wire of the resistance to be measured are not inserted into the guide opening 101, the position states of the macro block 20, the micro switch 50, the first metal block 30 and the second metal block 40 are as shown in fig. 3, the macro block 20 is not in contact with the micro switch 50, the first contact 501 and the second contact 502 in the micro switch 50 are not connected, the electromagnet 60 does not generate electromagnetic force, and there is a gap between the first metal block 30 and the second metal block 40 and the guide rib 201.
In the embodiment of the present invention, after the first wire and the second wire of the resistance to be measured are inserted into the guide opening 101, the macro block 20, the micro switch 50, the position states of the first metal block 30 and the second metal block 40 are as shown in fig. 4, the micro block 20 is connected to the micro switch 50, the first contact 501 and the second contact 502 in the micro switch 50 are connected, the electromagnet 60 generates an electromagnetic force, the first metal block 30 and the second metal block 40 move in a direction away from the guide opening 101 under the action of the electromagnetic force generated by the electromagnet, so that the distance between the first wire pressing column 301 and the second wire pressing column 401 and the guiding rib 201 is reduced, and further the first wire is sandwiched between the first wire pressing column 301 and the guiding rib 201, and the second wire is sandwiched between the second wire pressing column 401 and the guiding rib 201. Since the first wire presser 301 and the second wire presser 401 are respectively connected to both poles of the resistance measuring instrument 80, the resistance between the first wire and the second wire can be read from the resistance measuring instrument 80.
In the embodiment of the present invention, after the resistance measurement between the two wires is completed, a certain pulling force can be applied to the two wires inserted into the guiding opening 101, since the two wires are clamped between the guiding protruding rib 201 and the first pressing post 301 and the second pressing post 401, the pulling force applied to the two wires can drive the macro slider 20 to move in the direction away from the micro switch 50, the micro switch 50 can be triggered to be disconnected by the movement of the macro slider 20 in the direction away from the micro switch 50, i.e. the connection between the first contact 501 and the second contact 502 in the micro switch 50 is disconnected, then the electromagnet 60 stops generating the electromagnetic force due to no power input, the electromagnet 60 stops generating the electromagnetic force and then does not attract the first metal slider 30 and the second metal slider 40, at this time, the pressure between the first pressing post 301 and the second pressing post 401 and the guiding protruding rib 201 is reduced, therefore, the two wires can be pulled out from the guide port 101, and the measurement of the resistance between the two wires is completed.
Alternatively, on the basis of the resistance measuring clamp shown in fig. 3 or 4, the first metal slider 30 is connected to the housing 10 by a first spring, and the second metal slider 40 is connected to the housing 10 by a second spring. After the first contact 501 and the second contact 502 of the microswitch 50 are disconnected, the electromagnet 60 no longer generates electromagnetic force, so the electromagnet 60 no longer attracts the first metal slider 30 and the second metal slider 40, and at this time, the first metal slider 30 can move in the direction approaching the guide opening 101 under the action of the first spring, and the second metal slider 40 can also move in the direction approaching the guide opening 101 under the action of the second spring, even if the first metal slider 30 and the second metal slider 40 are reset, so that the resistance measurement can be performed next time.
The embodiment of the utility model provides an in, set up first spring between first metal sliding block and casing, set up the second spring between second metal sliding block and casing, when the electro-magnet no longer attracts first metal sliding block and second metal sliding block, first spring and second spring can make first metal sliding block and second metal sliding block reset, even first line ball post and second line ball post and the direction increase of clearance between the bead, can remove the centre gripping to first electric wire and second electric wire on the one hand, so that extract first electric wire and second electric wire from the guide opening, on the other hand can be for carrying out resistance measurement next time and prepare.
Alternatively, as shown in fig. 3 or fig. 4, the electromagnet 60 includes an electromagnetic head 601 having a hemispherical structure, a hemispherical surface of the electromagnetic head 601 is opposite to the first metal slider 30 and the second metal slider 40, and the electromagnetic head 601 is configured to generate an electromagnetic force after the first contact 501 and the second contact 502 in the micro switch 50 are communicated with each other, so as to attract the first metal slider 30 and the second metal slider 40.
The embodiment of the utility model provides an in, after micro-gap switch is closed, hemispherical structure's electromagnetic head can produce the electromagnetic force to attract first metal slider and the motion of second metal slider through produced electromagnetic force, and hemispherical structure's electromagnetic head can produce directional spherical electromagnetic force, make the appeal of applying on first metal slider and second metal slider more balanced, guarantee to attract first metal slider and the motion of second metal slider smoothly, and guarantee that first metal slider and second metal slider contact well with first electric wire and second electric wire respectively in the resistance measurement process.
Alternatively, as shown in fig. 3 or fig. 4, when the electromagnet 60 includes the electromagnetic head 601 having a hemispherical structure, an insulating layer is disposed on a hemispherical surface of the electromagnetic head 601.
The embodiment of the utility model provides an in, when the electromagnetic head attracts first metal slider and second metal slider motion, first metal slider and second metal slider can contact with the electromagnetic head, are provided with the insulating layer on the hemisphere face of electromagnetic head, can avoid forming the current path that is parallelly connected in parallel with two electric wires of volume of awaiting measuring resistance and influence resistance measurement's result by first metal slider, electromagnetic head and second metal slider group, consequently can guarantee measuring result's accuracy.
Alternatively, as in the resistance measuring jig shown in fig. 3 or 4, the first and second crimping legs 301 and 401 may be connected to both poles of the resistance measuring instrument, respectively.
The embodiment of the utility model provides an in, because the electro-magnet needs to attract first metal sliding block and the motion of second metal sliding block, consequently first metal sliding block and second metal sliding block need be the ferromagnetism material, first metal sliding block and second metal sliding block are electrically conductive promptly, in order to avoid the resistance influence resistance measurement's of first metal sliding block and second metal sliding block result, can be connected first line ball post and second line ball post with resistance measuring instrument's the two poles of the earth through the wire, reduce the interference resistance that includes in the resistance measurement return circuit, thereby can further improve resistance measurement result's accuracy.
Alternatively, on the basis of the resistance measuring jig provided in the above embodiments, the resistance measuring instrument may be a multimeter.
The embodiment of the utility model provides an in, be used for the universal meter to be the resistance measuring equipment commonly used, be connected the back with the two poles of the earth of universal meter and first metal slide and second metal slide, transfer the universal meter to the resistance indication mode, alright with measure the resistance between first electric wire and the second electric wire to need not to be equipped with special electricity and survey measuring equipment, guarantee that measuring resistance has lower cost.
To sum up, the utility model discloses the resistance measurement anchor clamps that each embodiment provided have following beneficial effect at least:
1. The embodiment of the utility model provides an in, be provided with the direction bead on the microspur slider, and the edge of direction bead is relative with the guide mouth on the casing, after the first electric wire and the second electric wire of awaiting measuring resistance got into from the guide mouth, first electric wire and second electric wire can alternate segregation under the effect of direction bead, and first electric wire can be pressed from both sides between first metal block and direction bead, the second electric wire can be pressed from both sides between second metal block and direction bead, thereby make first electric wire and second electric wire contact with first metal block and second metal block respectively, and first metal block and second metal block are connected with the two poles of the earth of resistance measuring instrument respectively, thereby can measure the resistance between first electric wire and the second electric wire through the resistance measuring instrument. Therefore, when the distance between the two wires is small, the two wires can be connected to the two poles of the resistance measuring instrument respectively only by inserting the two wires into the guide port, so that the resistance between the two wires can be measured by the resistance measuring instrument, the operation process is quick and convenient, the wires to be measured and the resistance measuring instrument do not need to be connected in a long time, and the efficiency of measuring the resistance between the two wires at a short distance can be improved.
2. The embodiment of the utility model provides an in, the axis of first line ball post and second line ball post all parallels with the axis of direction bead, after two electric wires of waiting to measure resistance are inserted from the guide mouth, first line ball post and second line ball post can be to the direction motion that is close to the direction bead, and then can press from both sides two electric wires respectively between first line ball post and direction bead and between second line ball post and direction bead, first line ball post and second line ball post adopt columnar structure, make first line ball post and second line ball post contact with the electric wire of waiting to measure resistance more closely, and then guarantee the accuracy of the resistance value of measuring.
3. The embodiment of the utility model provides an in, first line ball post and second line ball post are greater than the diameter of guide mouth along the length of its axis direction, correspondingly, the length of direction bead along its axis direction also is greater than the diameter of guide mouth, after the electric wire of measuring resistance is inserted from the guide mouth like this, two electric wires of measuring resistance are located between first line ball post and the direction bead and between second line ball post and the direction bead respectively, guarantee that first line ball post and second line ball post can carry out the centre gripping to two electric wires of measuring resistance, thereby guarantee that first line ball post and second line ball post can well contact with two electric wires of measuring resistance.
4. The embodiment of the utility model provides an in, two electric wires of the volume of awaiting measuring resistance can promote the microspur slider to the micro-gap switch direction slight motion, and the microspur slider can trigger the micro-gap switch closure to the micro-gap switch motion, and the micro-gap switch closure can make the electro-magnet produce the electromagnetic force, and the produced electromagnetic force of electro-magnet can attract first metal slider and the motion of second metal slider to press from both sides two electric wires of the volume of awaiting measuring resistance between first line ball post and direction bead and between second line ball post and the direction bead respectively. Therefore, when measuring the resistance between two electric wires, only two electric wires need to be inserted from the guide port, and smaller thrust is applied to the two electric wires to trigger the micro switch to be closed, so that the two electric wires can be connected with two poles of the resistance measuring instrument respectively, the measurement of the resistance between the two electric wires is realized, other complex operations are not needed, and the use experience of a user is provided.
5. The embodiment of the utility model provides an in, set up first spring between first metal sliding block and casing, set up the second spring between second metal sliding block and casing, when the electro-magnet no longer attracts first metal sliding block and second metal sliding block, first spring and second spring can make first metal sliding block and second metal sliding block reset, even first line ball post and second line ball post and the direction increase of clearance between the bead, can remove the centre gripping to first electric wire and second electric wire on the one hand, so that extract first electric wire and second electric wire from the guide opening, on the other hand can be for carrying out resistance measurement next time and prepare.
6. The embodiment of the utility model provides an in, after micro-gap switch is closed, hemispherical structure's electromagnetic head can produce the electromagnetic force to attract first metal slider and the motion of second metal slider through produced electromagnetic force, and hemispherical structure's electromagnetic head can produce directional spherical electromagnetic force, make the appeal of applying on first metal slider and second metal slider more balanced, guarantee to attract first metal slider and the motion of second metal slider smoothly, and guarantee that first metal slider and second metal slider contact well with first electric wire and second electric wire respectively in the resistance measurement process.
7. The embodiment of the utility model provides an in, when the electromagnetic head attracts first metal slider and second metal slider motion, first metal slider and second metal slider can contact with the electromagnetic head, are provided with the insulating layer on the hemisphere face of electromagnetic head, can avoid forming the current path that is parallelly connected in parallel with two electric wires of volume of awaiting measuring resistance and influence resistance measurement's result by first metal slider, electromagnetic head and second metal slider group, consequently can guarantee measuring result's accuracy.
8. The embodiment of the utility model provides an in, because the electro-magnet needs to attract first metal sliding block and the motion of second metal sliding block, consequently first metal sliding block and second metal sliding block need be the ferromagnetism material, first metal sliding block and second metal sliding block are electrically conductive promptly, in order to avoid the resistance influence resistance measurement's of first metal sliding block and second metal sliding block result, can be connected first line ball post and second line ball post with resistance measuring instrument's the two poles of the earth through the wire, reduce the interference resistance that includes in the resistance measurement return circuit, thereby can further improve resistance measurement result's accuracy.
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. Without further limitation, an element defined by the phrase "comprising a" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.
Finally, it is to be noted that: the above description is only the preferred embodiment of the present invention, which is only used to illustrate the technical solution of the present invention, and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention is included in the protection scope of the present invention.
Claims (8)
1. A resistance measurement fixture, comprising: the device comprises a shell, a micro-distance slide block, a first metal slide block and a second metal slide block;
The micro-distance slide block, the first metal slide block and the second metal slide block are all arranged inside the shell;
The upper side of the macro slide block is provided with a guide convex edge with a triangular cross section;
The shell is provided with a guide opening, and the guide opening is opposite to the edge of the guide convex edge;
The first metal sliding block and the second metal sliding block are respectively arranged on two sides of the guide convex edge, and the first metal sliding block and the second metal sliding block can be respectively connected with two poles of a resistance measuring instrument;
And a first electric wire and a second electric wire of the resistance to be measured are separated from each other under the action of the guide rib after entering from the guide opening, the first electric wire is clamped between the guide rib and the first metal slide block, and the second electric wire is clamped between the guide rib and the second metal slide block.
2. The resistance-measuring fixture of claim 1,
A first wire pressing column in a columnar shape is arranged at the upper part of the first metal sliding block, the axis of the first wire pressing column is parallel to the axis of the guide convex rib, the length of the first wire pressing column along the axis direction is larger than the diameter of the guide opening, and the first wire is clamped between the first wire pressing column and the guide convex rib;
The upper portion of the second metal sliding block is provided with a second columnar wire pressing column, the axis of the second wire pressing column is parallel to the axis of the guide convex rib, the length of the second wire pressing column along the axis direction is larger than the diameter of the guide opening, and the second wire is clamped between the second wire pressing column and the guide convex rib.
3. The resistance measurement fixture of claim 2, further comprising: a microswitch, an electromagnet and a power supply;
The micro switch is arranged at the bottom of the macro slide block, wherein the macro slide block is positioned between the micro switch and the guide port;
The first contact of the microswitch is connected with one pole of the power supply, the other pole of the power supply is connected with one wiring terminal of the electromagnet, and the other wiring terminal of the electromagnet is connected with the second contact of the microswitch;
The micro-distance slider is used for moving towards a direction close to the micro-switch after being pushed by the first electric wire and the second electric wire so as to enable the first contact and the second contact in the micro-switch to be communicated, and moving towards a direction far away from the micro-switch after being pulled by the first electric wire and the second electric wire so as to enable the first contact and the second contact in the micro-switch to be disconnected;
The electromagnet is used for attracting the first metal sliding block and the second metal sliding block to move in the direction away from the guide opening through magnetic force when the first contact and the second contact in the microswitch are communicated, so that the distance between the first wire pressing column and the second wire pressing column and the guide convex edge is reduced.
4. The resistance-measuring fixture of claim 3,
The first metal sliding block is connected with the shell through a first spring;
The second metal sliding block is connected with the shell through a second spring;
The first spring is used for driving the first metal sliding block to move towards the direction close to the guide opening after the first contact and the second contact in the microswitch are disconnected, so that the first metal sliding block is reset;
And the second spring is used for driving the second metal sliding block to move towards the direction close to the guide opening after the first contact and the second contact in the microswitch are disconnected, so that the second metal sliding block is reset.
5. The resistance-measuring fixture of claim 3,
The electromagnet comprises an electromagnetic head in a hemispherical structure, and the hemispherical surface of the electromagnetic head is opposite to the first metal sliding block and the second metal sliding block;
And the electromagnetic head is used for generating electromagnetic force after the first contact and the second contact in the microswitch are communicated, and attracting the first metal sliding block and the second metal sliding block.
6. The resistance measurement fixture of claim 5,
And an insulating layer is arranged on the hemispherical surface of the electromagnetic head.
7. The resistance-measuring fixture of claim 3,
The first and second crimping legs may be connected to two poles of the resistance measuring instrument, respectively.
8. The resistance measurement jig according to any one of claims 1 to 7,
The resistance measuring instrument includes: a multimeter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921381681.5U CN211206625U (en) | 2019-08-23 | 2019-08-23 | Resistance measuring clamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921381681.5U CN211206625U (en) | 2019-08-23 | 2019-08-23 | Resistance measuring clamp |
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| CN211206625U true CN211206625U (en) | 2020-08-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398632A (en) * | 2019-08-23 | 2019-11-01 | 上海知白智能科技有限公司 | A kind of resistance measurement fixture and resistance measurement method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110398632A (en) * | 2019-08-23 | 2019-11-01 | 上海知白智能科技有限公司 | A kind of resistance measurement fixture and resistance measurement method |
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Effective date of registration: 20231113 Address after: 200333, Room 1349, Building 20, No. 958 Zhenbei Road, Putuo District, Shanghai Patentee after: Shanghai Zhibai Intelligent Technology Co.,Ltd. Patentee after: Nanjing Paige measurement and Control Technology Co.,Ltd. Address before: 200333, Room 1349, Building 20, No. 958 Zhenbei Road, Putuo District, Shanghai Patentee before: Shanghai Zhibai Intelligent Technology Co.,Ltd. |