CN209542673U - A kind of clamping device with four-wire method metering contact contact resistance - Google Patents
A kind of clamping device with four-wire method metering contact contact resistance Download PDFInfo
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- CN209542673U CN209542673U CN201920220203.XU CN201920220203U CN209542673U CN 209542673 U CN209542673 U CN 209542673U CN 201920220203 U CN201920220203 U CN 201920220203U CN 209542673 U CN209542673 U CN 209542673U
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- contact
- clamping device
- wire method
- parcel
- contact resistance
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Abstract
A kind of clamping device with four-wire method metering contact contact resistance is related to the clamping device field of electrical contact.The utility model is in order to which the clamping device scope of application for solving the problems, such as current four-wire method metering contact contact resistance is small, replacement process is cumbersome and low efficiency.The nail pin of rivet type electrical contact is used to be inserted into from the petal-shaped chuck body center of four equal parts, when Manual rotating disk silk, with 4 umbrella tooths of parcel engagement just with 4 collets of upper part and 4 claws it is synchronous radially to center make close to or far from movement, realization is to the clamp or release of contact.It is for clamping rivet type electrical contact.
Description
Technical field
The utility model relates to a kind of clamping devices, and in particular to a kind of clamping with four-wire method metering contact contact resistance
Device.Belong to the clamping device field of electrical contact.
Background technique
Rivet type electrical contact is widely used in all kinds of contactors, relay and switch, and wherein the contact resistance of contact is
For measure electric equipment products performance and reliability important parameter.In order to eliminate the influence of conductor resistance, the essence of measurement is improved
Degree, the main measurement that contact resistance is carried out using four-wire method.But the physical size requirements in measurement process because of electrical contact are numerous,
The fixture for needing to be equipped with plurality of specifications, causes manufacturing cost to increase, while needing to frequently replace fixture in measurement, is unfavorable for mentioning
The efficiency of high measurement.Therefore, the clamping device of existing four-wire method metering contact contact resistance, generally existing clamping are applicable in model
Enclose small, in measurement, clamp-replacing is frequent, and replacement process is cumbersome, and the low equal problems demands of measurement efficiency solve.
Utility model content
The utility model be in order to the clamping device scope of application for solving current four-wire method metering contact contact resistance is small, more
The problem of changing cumbersome process and low efficiency.A kind of clamping device with four-wire method metering contact contact resistance is now provided.
A kind of clamping device with four-wire method metering contact contact resistance, it includes 2 clamp assemblies,
Each clamp assemblies are for clamping a rivet type electrical contact, and each clamp assemblies constitute one in four-wire method
Current line and a pressure-wire；The current value and two pressure-wires formed according to two current lines in 2 clamp assemblies is formed
Voltage value measurement rivet type electrical contact contact resistance；
Each clamp assemblies include chuck and contact clamping piece,
Each chuck includes chuck body 1, spacing collar 2, parcel 3 and 4 umbrella tooth 4,
Each contact clamping piece includes 4 collets 5 and 4 claws 6,
One end of chuck body 1 is shaft-like, and the center of the shaft-like is provided with tapped through hole, and an annular is provided on the side wall of the shaft-like
Groove, parcel 3 is in the form of annular discs and there is aperture at middle part, 3 sets of parcel on the shaft-like position of chuck body 1, spacing collar 2 is inserted in chuck body
The limit to parcel 3 is completed in 1 annular groove, the other end of chuck body 1 is petal-shaped in four equal parts, and four equal parts are petal-shaped
It is arranged on an end face of shaft-like, is provided with empty slot, and empty slot shape and 4 external form phase of umbrella tooth between each adjacent two is petal-shaped
Together, each umbrella tooth 4 is mounted in an empty slot,
The bottom of each umbrella tooth 4 connects a collets 5, and each claw 6 is fixed on a collets 5 by sunk screw
On, the bottom of each claw 6 is provided with a through-hole, and each measure traverse line is fixed on a sunk screw, then passes through each claw 6
The through-hole of bottom is pierced by, and the measure traverse line being pierced by adjacent 2 claws 6 does parallel processing, guarantees that a clamp assemblies constitute four
A current line and a pressure-wire in collimation method,
The nail pin of rivet type electrical contact is used to be inserted into from petal-shaped 1 center of chuck body of four equal parts, works as Manual rotating disk
It is just synchronous radially to center with 4 collets 5 and 4 claws 6 of upper part with 4 umbrella tooths 4 engaged of parcel 3 when silk 3
Make close to or far from movement, realize to the clamp or release of contact.
The utility model has the following beneficial effects:
By the nail pin of two rivet type electrical contacts respectively from the petal-shaped structure insertion of the equal part of two clamp assemblies, until nail
Foot is stretched out out of shaft-like center thread through hole, and when Manual rotating disk silk, 4 umbrella tooths engaged with parcel are just with upper part
4 collets and 4 claws it is synchronous radially to center make close to or far from movement, realize the clamp or release to contact.
The present apparatus is applicable to clamp the rivet type electrical contact of full specification, and contact quick-clamping and disassembly and stable holding may be implemented,
The contact resistance with four-wire method metering contact can be achieved；The application has structure simple, easy to operate, applied widely, measurement
High-efficient advantage.Simultaneously as the screw pitch of the planar rectangular screw thread on parcel is equal, so the move distance phase of 4 claws
Deng there is self centering effect.
Detailed description of the invention
Fig. 1 is a kind of entirety of the clamping device with four-wire method metering contact contact resistance described in specific embodiment one
Structure chart；
Fig. 2 is the handstand figure of Fig. 1；
Fig. 3 is the structure chart of chuck body；
Fig. 4 is the circuit diagram of four-wire method measuring principle；
Fig. 5 is the structural schematic diagram of rivet type electrical contact, and appended drawing reference L indicates the length of nail pin, and appended drawing reference d indicates nail
The width of foot.
Specific embodiment
Specific embodiment 1: illustrating present embodiment, a kind of use described in present embodiment referring to figs. 1 to Fig. 5
The clamping device of four-wire method metering contact contact resistance, it includes 2 clamp assemblies,
Each clamp assemblies are for clamping a rivet type electrical contact, and each clamp assemblies constitute one in four-wire method
Current line and a pressure-wire；The current value and two pressure-wires formed according to two current lines in 2 clamp assemblies is formed
Voltage value measurement rivet type electrical contact contact resistance；
Each clamp assemblies include chuck and contact clamping piece,
Each chuck includes chuck body 1, spacing collar 2, parcel 3 and 4 umbrella tooth 4,
Each contact clamping piece includes 4 collets 5 and 4 claws 6,
One end of chuck body 1 is shaft-like, and the center of the shaft-like is provided with tapped through hole, and an annular is provided on the side wall of the shaft-like
Groove, parcel 3 is in the form of annular discs and there is aperture at middle part, 3 sets of parcel on the shaft-like position of chuck body 1, spacing collar 2 is inserted in chuck body
The limit to parcel 3 is completed in 1 annular groove, the other end of chuck body 1 is petal-shaped in four equal parts, and four equal parts are petal-shaped
It is arranged on an end face of shaft-like, is provided with empty slot, and empty slot shape and 4 external form phase of umbrella tooth between each adjacent two is petal-shaped
Together, each umbrella tooth 4 is mounted in an empty slot,
The bottom of each umbrella tooth 4 connects a collets 5, and each claw 6 is fixed on a collets 5 by sunk screw
On, the bottom of each claw 6 is provided with a through-hole, and each measure traverse line is fixed on a sunk screw, then passes through each claw 6
The through-hole of bottom is pierced by, and the measure traverse line being pierced by adjacent 2 claws 6 does parallel processing, guarantees that a clamp assemblies constitute four
A current line and a pressure-wire in collimation method,
The nail pin of rivet type electrical contact is used to be inserted into from petal-shaped 1 center of chuck body of four equal parts, works as Manual rotating disk
It is just synchronous radially to center with 4 collets 5 and 4 claws 6 of upper part with 4 umbrella tooths 4 engaged of parcel 3 when silk 3
Make close to or far from movement, realize to the clamp or release of contact.
In present embodiment, umbrella tooth 4 is fixedly connected with collets 5 by sunk screw；It is heavy that collets 5 and claw 6 pass through
Head screw is fixedly connected.
Each clamp assemblies reliably constitute a current line and a pressure-wire in four-wire method, and two clamp assemblies can be real
The contact resistance function of existing four-wire method metering contact.
Flat thread on the parcel 3 is planar rectangular screw thread.
As shown in figure 4, by the nail pin of two rivet type electrical contacts respectively from the petal-shaped structure of equal part of two clamp assemblies
Insertion, until nail pin is stretched out out of shaft-like center thread through hole, constant-current source provides electric current, a clamping dress for two clamping devices
Output voltage anode and electric current anode, another clamping device output voltage cathode and electric current cathode are set, voltage measurement is used to survey
Measure the voltage drop V between positive polarity P+ and voltage cathode P-, it is believed that the surveyed voltage V of voltage measurement is between P+ and P-
Voltage value, the electric current I that electric current anode and electric current cathode are formed obtains the touching of rivet type electricity further according to the ratio of voltage V and electric current I
The contact resistance value of head.
Specific embodiment 2: present embodiment is to use four-wire method metering contact to a kind of described in specific embodiment one
The clamping device of contact resistance is described further, and in present embodiment, flat thread is arranged at 3 bottom of parcel, and 4 top of umbrella tooth is equipped with
The screw thread engaged with 3 flat thread of parcel.
Specific embodiment 3: present embodiment is to use four-wire method metering contact to a kind of described in specific embodiment two
The clamping device of contact resistance is described further, and in present embodiment, flat thread is planar rectangular screw thread, and the spiral shell of screw thread
Away from equal.
In present embodiment, simultaneously as the screw pitch of the planar rectangular screw thread of 3 bottom of parcel is equal, so 4 claws
Move distance is equal, there is self centering effect.
Specific embodiment 4: present embodiment is to use four-wire method metering contact to a kind of described in specific embodiment one
The clamping device of contact resistance is described further, and in present embodiment, collets 5 are made of polyimides.
In present embodiment, collets 5 are made of polyimides.It is designed in this way, insulation can be played the role of, avoid 4
A claw conducting, realizes the independence of 4 claws.
Specific embodiment 5: present embodiment is to use four-wire method metering contact to a kind of described in specific embodiment one
The clamping device of contact resistance is described further, and in present embodiment, claw 6 is made of red copper.
In present embodiment, claw 6 is made of red copper.It is designed in this way, the effect for reducing loop resistance can be played.
Specific embodiment 6: present embodiment is to use four-wire method metering contact to a kind of described in specific embodiment one
The clamping device of contact resistance is described further, and in present embodiment, claw 6 is small equipped with one in the bottom towards chuck hub end
Platform.
In present embodiment, claw 6 is equipped with a chain-wales in the bottom towards chuck hub end, is designed in this way, it can be achieved that right
The limit of rivet type electrical contact.
Claims (6)
1. a kind of clamping device with four-wire method metering contact contact resistance, which is characterized in that it includes 2 clamp assemblies,
Each clamp assemblies are for clamping a rivet type electrical contact, and each clamp assemblies constitute an electric current in four-wire method
Line and a pressure-wire；The electricity that the current value and two pressure-wires formed according to two current lines in 2 clamp assemblies is formed
The contact resistance of pressure value measurement rivet type electrical contact；
Each clamp assemblies include chuck and contact clamping piece,
Each chuck includes chuck body (1), spacing collar (2), parcel (3) and 4 umbrella tooths (4),
Each contact clamping piece includes 4 collets (5) and 4 claws (6),
One end of chuck body (1) is shaft-like, and the center of the shaft-like is provided with tapped through hole, and it is recessed that an annular is provided on the side wall of the shaft-like
Slot, parcel (3) is in the form of annular discs and there is aperture at middle part, and parcel (3) covers on the shaft-like position of chuck body (1), and spacing collar (2) is inserted in
The limit to parcel (3) is completed in the annular groove of chuck body (1), the other end of chuck body (1) is petal-shaped in four equal parts, and four
Be provided with empty slot on the petal-shaped end face that shaft-like is set of a equal part, between each adjacent two is petal-shaped, and empty slot shape with
Umbrella tooth (4) external form is identical, and each umbrella tooth (4) is mounted in an empty slot,
The bottom of each umbrella tooth (4) connects a collets (5), and each claw (6) is fixed on an insulation by sunk screw
On block (5), the bottom of each claw (6) is provided with a through-hole, and each measure traverse line is fixed on a sunk screw, then by every
The through-hole of a claw (6) bottom is pierced by, and the measure traverse line being pierced by adjacent 2 claws (6) does parallel processing, guarantees a clamping
Component constitutes a current line and a pressure-wire in four-wire method,
The nail pin of rivet type electrical contact is used to be inserted into from petal-shaped chuck body (1) center of four equal parts, when Manual rotating disk silk
(3) just synchronous along diameter with 4 collets (5) of upper part and 4 claw (6) with 4 umbrella tooths (4) of parcel (3) engagement when
To center make close to or far from movement, realize to the clamp or release of contact.
2. a kind of clamping device with four-wire method metering contact contact resistance according to claim 1, which is characterized in that parcel
(3) flat thread is arranged at bottom, and umbrella tooth (4) top is equipped with the screw thread engaged with parcel (3) flat thread.
3. a kind of clamping device with four-wire method metering contact contact resistance according to claim 2, which is characterized in that plane
Screw thread is planar rectangular screw thread, and the screw pitch of screw thread is equal.
4. a kind of clamping device with four-wire method metering contact contact resistance according to claim 1, which is characterized in that insulation
Block (5) is made of polyimides.
5. a kind of clamping device with four-wire method metering contact contact resistance according to claim 1, which is characterized in that claw
(6) it is made of red copper.
6. a kind of clamping device with four-wire method metering contact contact resistance according to claim 1, which is characterized in that claw
(6) chain-wales are equipped in the bottom towards chuck hub end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920220203.XU CN209542673U (en) | 2019-02-21 | 2019-02-21 | A kind of clamping device with four-wire method metering contact contact resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920220203.XU CN209542673U (en) | 2019-02-21 | 2019-02-21 | A kind of clamping device with four-wire method metering contact contact resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209542673U true CN209542673U (en) | 2019-10-25 |
Family
ID=68273672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920220203.XU Expired - Fee Related CN209542673U (en) | 2019-02-21 | 2019-02-21 | A kind of clamping device with four-wire method metering contact contact resistance |
Country Status (1)
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| CN (1) | CN209542673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138301A (en) * | 2021-04-21 | 2021-07-20 | 贵州电网有限责任公司 | Special high-altitude wiring clamp for loop resistance test |
-
2019
- 2019-02-21 CN CN201920220203.XU patent/CN209542673U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113138301A (en) * | 2021-04-21 | 2021-07-20 | 贵州电网有限责任公司 | Special high-altitude wiring clamp for loop resistance test |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 |
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| CF01 | Termination of patent right due to non-payment of annual fee |