CN216144879U - Resistance test jaw suitable for conductors in various shapes - Google Patents
Resistance test jaw suitable for conductors in various shapes Download PDFInfo
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- CN216144879U CN216144879U CN202121949621.6U CN202121949621U CN216144879U CN 216144879 U CN216144879 U CN 216144879U CN 202121949621 U CN202121949621 U CN 202121949621U CN 216144879 U CN216144879 U CN 216144879U
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Abstract
The utility model discloses a resistance testing jaw suitable for conductors in various shapes, which comprises: a set of corresponding jaws, the jaws comprising: the clamp comprises a shell, a plurality of contact groups and a jaw base, wherein the shell is a hollow shell, one side of the shell is fixedly connected with the jaw base, a plurality of guide rails are arranged on the inner wall of the other side of the shell, contacts are arranged on the guide rails, and the guide rails and the contacts are matched for use; the contact group comprises a plurality of jaw connecting leads, the contact of the jaws and a test conductor can be ensured to be tight regardless of whether the leads are round or irregular, the temperature rise of contact points is reduced, the measurement accuracy is improved, the contact group can be widely applied to circuit structures and test places with special requirements, particularly the fields of high-precision testing and small resistance testing, has extremely high applicability, can greatly ensure the measurement precision, and reduces the influence of contact resistance on test results.
Description
Technical Field
The utility model belongs to the field of resistance testing, and particularly relates to a resistance testing jaw suitable for conductors in various shapes.
Background
When the quality of the electric wire and the electric cable is detected, the resistance of an inner conductor needs to be measured, and a large current needs to be applied during measurement, so that the jaw of the test wire and a lead are required to be in good contact, otherwise, the current generates heat to generate an oxide layer, and great influence is caused on a test result.
The existing jaws mainly comprise a V-shaped jaw, a sawtooth jaw and an arc-shaped jaw (the sawtooth jaw and the V-shaped jaw are similar), because the shapes of wires are uncertain, the two jaws sometimes only have a few point contacts when clamping the wires in a test, when a test circuit is applied, the contact points can be rapidly heated, and a formed oxide layer can increase contact resistance, so that test errors are caused.
There is a ubiquitous need for temporary wiring and testing of electrical power systems, and it is a ubiquitous practice to use clamps to grip conductors to accomplish temporary wiring and testing. In a conventional situation, the resistance caused by the contact between the clamp and the wire and the associated problems of heat generation, power consumption and the like are all within an acceptable range, but in a high-precision test, the resistance caused by the contact between the clamp and the wire cannot be simply ignored, even under certain conditions, the contact resistance and the measured resistance are in the same order of magnitude or even exceed the test resistance, at the moment, the contact resistance can directly cause the test result to be greatly deviated from original data, meanwhile, in a high-current test, the contact resistance can cause the loss of test equipment to be increased, the contact point generates heat to increase the resistance, and even the contact point is ablated to cause an open circuit. Therefore, various means capable of reducing the contact resistance between the jaw and the conductor are available, but the above-mentioned defects always exist in the whole technical means for testing.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that the existing jaws mainly comprise a V-shaped jaw, a sawtooth jaw and an arc-shaped jaw (the situations of the sawtooth jaw and the V-shaped jaw are similar), because the shape of a wire is uncertain, the two jaws are only contacted with a plurality of points sometimes when the wire is clamped in a test, when a test circuit is applied, the contact points are rapidly heated, and the formed oxide layer increases the contact resistance to cause test errors.
In order to solve the technical problem, the technical scheme of the utility model is as follows:
a resistance testing jaw adapted for use with a plurality of shaped conductors, comprising: a set of corresponding jaws, the jaws comprising: the clamp comprises a shell, a plurality of contact groups and a jaw base, wherein the shell is a hollow shell, one side of the shell is fixedly connected with the jaw base, a plurality of guide rails are arranged on the inner wall of the other side of the shell, contacts are arranged on the guide rails, and the guide rails and the contacts are matched for use; the contact group comprises a plurality of jaw connecting leads, one end of each jaw connecting lead is fixedly connected with the outer wall of one side of the jaw base, the other end of each jaw connecting lead is fixedly connected with the contact,
and a pressing spring is further arranged between the jaw base and the contact, the jaw connecting lead passes through the center of the pressing spring, and when the contact moves along the direction of the jaw base, the pressing spring is in a stressed state.
The clamp is provided with the compression spring, so that the clamp jaw can be tightly contacted with the test conductor regardless of whether the lead is round or irregular, the temperature rise of a contact point is reduced, and the measurement accuracy is improved. The novel clamping jaw structure is low in cost, wide in application range, good in clamping effect on conductors with different shapes and different cross-sectional areas, small in contact resistance, capable of being widely applied to circuit structures and test places with special requirements, particularly high in applicability in the fields of high-precision testing and small-resistance testing, capable of greatly guaranteeing measuring accuracy and reducing influence of the contact resistance on test results.
Further, the jaw base is disposed on a side of the housing where the opening is disposed.
Further, the jaw connecting lead is parallel to the central axis of the compression spring.
Further, still include: and the wiring stud is arranged on the outer wall of the other side of the jaw base.
Further, the wiring stud is made of copper.
Further, the guide rail is connected with the contact in a sliding mode.
Further, after the contact moves along the opposite direction of the jaw base and is static, the compression spring is in an unstressed state.
Further, the hold down spring is in a compressed state when the contact is moved in the direction of the jaw base.
Compared with the prior art, the utility model has the advantages that:
the clamp mouth can be ensured to be tightly contacted with the test conductor regardless of whether the lead is round or irregular, the temperature rise of the contact point is reduced, and the measurement accuracy is improved. The novel clamping jaw structure is low in cost, wide in application range, good in clamping effect on conductors with different shapes and different cross-sectional areas, small in contact resistance, capable of being widely applied to circuit structures and test places with special requirements, particularly high in applicability in the fields of high-precision testing and small-resistance testing, capable of greatly guaranteeing measuring accuracy and reducing influence of the contact resistance on test results.
Drawings
FIG. 1 is a schematic diagram of a resistance testing jaw of the present invention adapted for use with conductors of various shapes;
FIG. 2 is a schematic view of a first embodiment of a resistance testing jaw of the present invention adapted for use with multiple shaped conductors;
FIG. 3 is a schematic view of a second embodiment of a resistance testing jaw of the present invention adapted for use with multiple shaped conductors.
Description of reference numerals:
1-clamping a jaw; 2-a contact set; 3-a shell; 4-a jaw base; 5-a compression spring; 6-connecting a lead wire with the jaw; 7-a contact; 8-a wiring stud; 9-a guide rail; 10-a crank; 11-a lead screw; 12-a chassis; 13-a spring; 14-a handle.
Detailed Description
The following describes embodiments of the present invention with reference to examples:
it should be noted that the structures, proportions, sizes, and other elements shown in the specification are included for the purpose of understanding and reading only, and are not intended to limit the scope of the utility model, which is defined by the claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes, without affecting the efficacy and attainment of the same.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Example 1
As shown in fig. 1, a resistance testing jaw adapted for use with a plurality of shaped conductors, comprising: a set of corresponding jaws 1, said jaws 1 comprising: the clamp comprises a shell 3, a plurality of contact groups 2 and a jaw base 4, wherein the shell 3 is a hollow shell, one side of the shell 3 is fixedly connected with the jaw base 4, a plurality of guide rails 9 are arranged on the inner wall of the other side of the shell 3, contacts 7 are arranged on the guide rails 9, and the guide rails 9 and the contacts 7 are matched for use; the contact group 2 comprises a plurality of jaw connecting leads 6, one end of each jaw connecting lead 6 is fixedly connected with the outer wall of one side of the jaw base 4, the other end of each jaw connecting lead 6 is fixedly connected with the contact 7,
a pressing spring 5 is further arranged between the jaw base 4 and the contact 7, the jaw connecting lead 6 penetrates through the center of the pressing spring 5, and when the contact 7 moves along the direction of the jaw base 4, the pressing spring 5 is in a stressed state.
The pressing spring 5 is arranged, so that the jaw 1 can be ensured to be tightly contacted with the test conductor regardless of whether the lead is round or irregular, the temperature rise of a contact point is reduced, and the measurement accuracy is improved. The novel clamping jaw structure is low in cost, wide in application range, good in clamping effect on conductors with different shapes and different cross-sectional areas, small in contact resistance, capable of being widely applied to circuit structures and test places with special requirements, particularly high in applicability in the fields of high-precision testing and small-resistance testing, capable of greatly guaranteeing measuring accuracy and reducing influence of the contact resistance on test results.
The jaw base 4 is disposed on the side of the housing 3 where the opening is provided.
The jaw connecting lead 6 is parallel to the central axis of the compression spring 5.
Further comprising: and the wiring stud 8 is arranged on the outer wall of the other side of the jaw base 4.
The wiring stud 8 is made of copper.
The guide rails 9 are slidably connected with the contacts 7.
After the contact 7 moves along the opposite direction of the jaw base 4 and is static, the compression spring 5 is in an unstressed state.
When the contact 7 is moved in the direction of the jaw base 4, the hold-down spring 5 is in a compressed state.
The wire clamping is completed by using a group of corresponding jaws 1, each jaw 1 comprises four contact groups 2 which are arranged in parallel, and each contact group consists of 8 contacts; two groups of contacts 7 are arranged on a fixed guide rail 9 of a use place, a bidirectional screw rod is used for promoting the two contacts 7 to move relatively, when the contacts 7 contact with a lead, a compression spring 5 is compressed, the contacts 7 retract, the contact group 2 can be compressed continuously, finally, a plurality of contacts 7 are ensured to be in contact with the lead, a connecting lead 6 is arranged behind each contact 7 and connected with a jaw base 4, a connecting stud 8 behind the jaw base 4 is used for connecting an output terminal of a test loop or equipment, the whole circuit is ensured to be well connected, and the resistance is at a lower level and does not heat well.
Example two:
this implementation two is applied to the embodiment a resistance test jaw suitable for multiple shape conductor specifically includes:
as shown in fig. 2, a resistance testing jaw adapted for use with a plurality of shaped conductors, comprising: a set of corresponding jaws 1, said jaws 1 comprising: the clamp comprises a shell 3, a plurality of contact groups 2 and a jaw base 4, wherein the shell 3 is a hollow shell, one side of the shell 3 is fixedly connected with the jaw base 4, a plurality of guide rails 9 are arranged on the inner wall of the other side of the shell 3, contacts 7 are arranged on the guide rails 9, and the guide rails 9 and the contacts 7 are matched for use; the contact group 2 comprises a plurality of jaw connecting leads 6, one end of each jaw connecting lead 6 is fixedly connected with the outer wall of one side of the jaw base 4, the other end of each jaw connecting lead 6 is fixedly connected with the contact 7,
a pressing spring 5 is further arranged between the jaw base 4 and the contact 7, the jaw connecting lead 6 penetrates through the center of the pressing spring 5, and when the contact 7 moves along the direction of the jaw base 4, the pressing spring 5 is in a stressed state.
The pressing spring 5 is arranged, so that the jaw 1 can be ensured to be tightly contacted with the test conductor regardless of whether the lead is round or irregular, the temperature rise of a contact point is reduced, and the measurement accuracy is improved. The novel clamping jaw structure is low in cost, wide in application range, good in clamping effect on conductors with different shapes and different cross-sectional areas, small in contact resistance, capable of being widely applied to circuit structures and test places with special requirements, particularly high in applicability in the fields of high-precision testing and small-resistance testing, capable of greatly guaranteeing measuring accuracy and reducing influence of the contact resistance on test results.
The jaw base 4 is disposed on the side of the housing 3 where the opening is provided.
The jaw connecting lead 6 is parallel to the central axis of the compression spring 5.
Further comprising: and the wiring stud 8 is arranged on the outer wall of the other side of the jaw base 4.
The wiring stud 8 is made of copper.
The guide rails 9 are slidably connected with the contacts 7.
After the contact 7 moves along the opposite direction of the jaw base 4 and is static, the compression spring 5 is in an unstressed state.
When the contact 7 is moved in the direction of the jaw base 4, the hold-down spring 5 is in a compressed state.
Further comprising: the wire clamp comprises a chassis 12, a screw rod 11 and a crank 10, wherein two corresponding jaw bases 4 are arranged on the chassis 12 and connected with the screw rod 11 in the chassis 12, threads on two sides of the screw rod 11 are opposite, and when the crank 10 is rotated, the two jaw bases 4 move relatively to finish clamping a wire.
Example three:
as an alternative to the second embodiment, the third embodiment specifically includes:
as shown in fig. 3, a resistance testing jaw adapted for use with a plurality of shaped conductors, comprising: a set of corresponding jaws 1, said jaws 1 comprising: the clamp comprises a shell 3, a plurality of contact groups 2 and a jaw base 4, wherein the shell 3 is a hollow shell, one side of the shell 3 is fixedly connected with the jaw base 4, a plurality of guide rails 9 are arranged on the inner wall of the other side of the shell 3, contacts 7 are arranged on the guide rails 9, and the guide rails 9 and the contacts 7 are matched for use; the contact group 2 comprises a plurality of jaw connecting leads 6, one end of each jaw connecting lead 6 is fixedly connected with the outer wall of one side of the jaw base 4, and the other end of each jaw connecting lead 6 is fixedly connected with the contact 7;
a pressing spring 5 is further arranged between the jaw base 4 and the contact 7, the jaw connecting lead 6 penetrates through the center of the pressing spring 5, and when the contact 7 moves along the direction of the jaw base 4, the pressing spring 5 is in a stressed state.
The pressing spring 5 is arranged, so that the jaw 1 can be ensured to be tightly contacted with the test conductor regardless of whether the lead is round or irregular, the temperature rise of a contact point is reduced, and the measurement accuracy is improved. The novel clamping jaw structure is low in cost, wide in application range, good in clamping effect on conductors with different shapes and different cross-sectional areas, small in contact resistance, capable of being widely applied to circuit structures and test places with special requirements, particularly high in applicability in the fields of high-precision testing and small-resistance testing, capable of greatly guaranteeing measuring accuracy and reducing influence of the contact resistance on test results.
The jaw base 4 is disposed on the side of the housing 3 where the opening is provided.
The jaw connecting lead 6 is parallel to the central axis of the compression spring 5.
Further comprising: and the wiring stud 8 is arranged on the outer wall of the other side of the jaw base 4.
The wiring stud 8 is made of copper.
The guide rails 9 are slidably connected with the contacts 7.
After the contact 7 moves along the opposite direction of the jaw base 4 and is static, the compression spring 5 is in an unstressed state.
When the contact 7 is moved in the direction of the jaw base 4, the hold-down spring 5 is in a compressed state.
Further comprising: a handle 14 and a spring 13;
in the application, two jaws 1 are arranged at one end of an X-shaped handle, a spring 13 is arranged at the other section of the X-shaped handle, when in use, a handle 14 at the end of the spring is pinched, and the jaws 1 are opened; after the conductor is put in, the spring side handle 14 is released, and the jaw 1 can complete the clamping of the wire.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Many other changes and modifications can be made without departing from the spirit and scope of the utility model. It is to be understood that the utility model is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (8)
1. A resistance testing jaw adapted for use with a plurality of shaped conductors, comprising: a set of corresponding jaws (1), said jaws (1) comprising: the clamp comprises a shell (3), a plurality of contact groups (2) and a jaw base (4), wherein the shell (3) is a hollow shell, one side of the shell (3) is fixedly connected with the jaw base (4), a plurality of guide rails (9) are arranged on the inner wall of the other side of the shell (3), contacts (7) are arranged on the guide rails (9), and the guide rails (9) and the contacts (7) are matched for use; the contact group (2) comprises a plurality of jaw connecting leads (6), one end of each jaw connecting lead (6) is fixedly connected with the outer wall of one side of the jaw base (4), the other end of each jaw connecting lead (6) is fixedly connected with the contact (7),
a pressing spring (5) is further arranged between the jaw base (4) and the contact (7), the jaw connecting lead (6) penetrates through the center of the pressing spring (5), and when the contact (7) moves along the direction of the jaw base (4), the pressing spring (5) is in a stressed state.
2. Resistance testing jaw adapted to multiple shaped conductors according to claim 1, characterized in that the jaw base (4) is arranged at the side of the housing (3) where the opening is provided.
3. The resistance testing jaw for conductors of various shapes according to claim 1, characterized in that the jaw connecting lead (6) is parallel to the central axis of the compression spring (5).
4. The resistance testing jaw of claim 1, further comprising: the wire connection stud (8), wire connection stud (8) set up in the outer wall of jaw base (4) opposite side.
5. The resistance testing jaw for conductors of various shapes according to claim 4, characterized in that the wiring stud (8) is made of copper.
6. Resistance testing jaw suitable for multiple shaped conductors according to claim 1, characterized in that the guide (9) is slidingly connected to the contact (7).
7. Resistance testing jaw suitable for multiple-shaped conductors according to claim 1, characterized in that the compression spring (5) is in an unstressed state after the contact (7) is moved in the opposite direction of the jaw base (4) and is stationary.
8. Resistance testing jaw adapted to multiple shaped conductors according to claim 1, characterized in that the compression spring (5) is in a compressed state when the contact (7) is moved in the direction of the jaw base (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121949621.6U CN216144879U (en) | 2021-08-19 | 2021-08-19 | Resistance test jaw suitable for conductors in various shapes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121949621.6U CN216144879U (en) | 2021-08-19 | 2021-08-19 | Resistance test jaw suitable for conductors in various shapes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216144879U true CN216144879U (en) | 2022-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121949621.6U Active CN216144879U (en) | 2021-08-19 | 2021-08-19 | Resistance test jaw suitable for conductors in various shapes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216144879U (en) |
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2021
- 2021-08-19 CN CN202121949621.6U patent/CN216144879U/en active Active
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