Plugging piece special for measuring mechanical characteristics of circuit breaker
By designing dedicated plug-in components for small and large female connectors, the inconvenience of wiring and safety risks in the measurement of circuit breaker mechanical characteristics were solved, and a safe and reliable measurement process was achieved.
Patent Information
- Application Number
- CN202520342309.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-28
AI Technical Summary
The current method of measuring the mechanical characteristics of circuit breakers is inconvenient due to the difficulty in wiring, the risk of detachment, high contact resistance, and the risk of short circuits, which pose safety risks. Furthermore, the different secondary plug models of circuit breakers from different manufacturers are not standardized, making the measurement difficult.
A special plug-in component including small and large female connectors was designed. It adopts an elastic pressure plate and insulating sleeve structure to enhance the friction and contact area with the male pin of the circuit breaker secondary plug, reduce resistance, and prevent detachment and short circuit.
It enables convenient, safe and reliable measurement of circuit breaker mechanical characteristics, reduces measurement errors and safety risks, and avoids line short-circuit accidents.
Smart Images
Figure CN223809360U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to special plug -in technology field, concretely relates to a circuit breaker mechanical characteristic measurement special plug -in. BACKGROUND
[0002] Circuit breaker mechanical characteristic measurement special plug -in is the necessary of circuit breaker mechanical characteristic measurement, is used to connect circuit breaker characteristic tester and circuit breaker secondary plug, is used for measuring the mechanical characteristic, the time of opening and closing, the synchronism of opening and closing, speed and other parameters of circuit breaker. In the operation of circuit breaker, the circuit breaker secondary plug can be connected through the original circuit breaker socket in the distribution cabinet, because the circuit breaker secondary plug has locking device after connecting with the circuit breaker socket, the male needle of the circuit breaker secondary plug can be connected tightly with the female needle of the circuit breaker socket through the locking device, and the contact is good, and it will not be loose.
[0003] When measuring the mechanical characteristics of circuit breaker on site, 4 test lines are needed, and the plug -in position needs to be changed many times according to the test requirements. The wiring through the original circuit breaker socket in the distribution cabinet cannot be used for on -site power failure detection. However, the circuit breaker secondary plug and the circuit breaker socket configured by different circuit breaker manufacturers are not unified in model, and the structures and wiring designs of different manufacturers are also different. Therefore, the method of configuring the circuit breaker socket is not suitable for on -site power failure detection.
[0004] In addition, the number of male pins of the circuit breaker secondary plug is 48-58, the diameter of the male pins is 2mm, the spacing between the bottom of the male pin base is 5mm, the height of the male pin is 15mm (movable), and the minimum spacing at the top of the male pin is only 3.5mm. The characteristics of the circuit breaker secondary plug are that the number of male pins is large, the spacing between the male pin bases is small, and the male pins on the plug base are allowed to move, which results in smaller spacing at the top of the male pins.
[0005] When measuring the mechanical characteristics of circuit breaker, one end of the test line is usually connected to the tester, and the other end of the test line is directly clamped on the male pin of the circuit breaker secondary plug by using a full-naked alligator clip, a half-naked alligator clip or a full-sheathed alligator clip. However, due to the large number of male pins and the small spacing at the top of the male pins, the test line measured by this method has the problems of inconvenient wiring, easy misconnection, small contact area between the alligator clip and the male pin of the circuit breaker secondary plug, large contact resistance, falling off during measurement, and easy contact with adjacent male pins to cause short circuit and burn other lines, which may cause safety risks and easily lead to short circuit of other control lines of the measured circuit breaker, even burn the control lines of the circuit breaker, and affect the safe measurement of the circuit breaker. UTILITY MODEL CONTENTS
[0006] In order to solve the above problems, a circuit breaker mechanical characteristic measurement special plug -in is provided, which can prevent the wiring from falling off, prevent the contact with adjacent male pins, and facilitate the wiring.
[0007] In order to achieve the above object, the utility model discloses the following technical scheme:
[0008] A circuit breaker mechanical characteristic measurement special plug connector, including through the connecting wire of small female and big female, small female includes small female metal body, and big female includes big female metal body, one side of small female metal body away from connecting wire is equipped with small female slot, and the spring pressing piece is equipped in small female slot, and the spring pressing piece is matched with the spring pressing piece groove that is arranged on the side of small female metal body and is linked with small female slot, and the spring pressing piece is connected with small female metal body through the small female pressing ring that is arranged in the one end of small female slot away from connecting wire, and the small female metal body and big female metal body are encapsulated with insulating sleeve.
[0009] Preferably, the spring pressing piece includes a fixed pressing piece that cooperates with the small female pressing ring, and the fixed pressing piece has an elastic inclined piece at one end away from the small female pressing ring, and the elastic inclined piece has an arc-shaped elastic piece at the tail end that cooperates with the small female slot; the spring pressing piece is a phosphor copper silver plating pressing piece.
[0010] Preferably, the small female slot has a pressing ring groove at one end away from the connecting wire that matches the small female pressing ring; and the big female metal body has a big female slot at one side away from the connecting wire.
[0011] Preferably, the insulating sleeve has a sleeve transverse anti-skid pattern, and the insulating sleeve has a bend-resistant and break-resistant sheath at the connecting position with the connecting wire.
[0012] Preferably, the tail end of the small female metal body and the big female metal body respectively has a metal anti-skid transverse pattern that cooperates with the insulating sleeve.
[0013] Preferably, the tail end of the small female metal body and the big female metal body has an arc-shaped connecting plate that connects with the connecting wire, the arc-shaped connecting plate is connected with the connecting wire through high-temperature tin soldering, and the arc-shaped connecting plate has a connecting groove that connects with the connecting wire.
[0014] Preferably, the connecting wire has an insulating package that connects with the bend-resistant and break-resistant sheath.
[0015] Preferably, the insulating sleeve is a flame-retardant plastic shell; the connecting wire is a soft copper wire; and the small female metal body and the big female metal body are made of copper.
[0016] Preferably, the cross section of the large socket is circular, the large socket is a socket with an inner diameter of 4.0 mm and a depth of 20 mm, and the material is pure copper plated with silver; the cross section of the small socket is circular, the small socket is a socket with an inner diameter of 2.5 mm and a depth of 16 mm, and the material is pure copper plated with silver; the small socket metal body is provided with a deep groove with a width of 1.5 mm and a length of 13 mm, and a phosphor copper plated with silver elastic pressing piece with a length of 12 mm and a width of 2 mm is installed in the groove, and the elastic pressing piece is pressed with the small socket metal body through a pressing ring; the insulating sleeve and the insulating package are made of flame-retardant plastic shell material; the connecting wire is made of multiple strands of oxygen-free pure copper wire with a diameter of 2.5 mm 2 (0.10 mm 2 *315 roots); the total length of the special plug-in connector is 400 mm; the insertion force of the large socket is 22-25 N, and the pulling-out force is 25-28 N; the insertion force of the small socket is 8-10 N, and the pulling-out force is 10-12 N; the loop resistance of the large socket and the circuit breaker general wire male needle is 500 mu Omega (20 DEG C), the loop resistance of the small socket and the circuit breaker general wire male needle is 200 mu Omega (20 DEG C), and the overall DC resistance of the plug-in connector is 3.5 m Omega (20 DEG C); after 2000 times of plugging and unplugging, the loop resistance of the large socket and the circuit breaker general wire male needle is 500 mu Omega (20 DEG C), the loop resistance of the small socket and the circuit breaker general wire male needle is 200 mu Omega (20 DEG C), and the loop resistance is not reduced.
[0017] Compared with the prior art, the utility model has the advantages that:
[0018] 1、 the utility model discloses a double socket special plug-in connector which is formed by connecting a large socket and a small socket through a connecting wire, the elastic pressing piece of the special plug-in connector can increase the friction force between the small socket and the male needle on the secondary plug of the circuit breaker, prevent the small socket from falling off during measurement, facilitate the quick and effective connection between the special plug-in connector and the male needle, and make the operation more convenient, the small socket can also increase the contact area with the male needle and reduce the resistance between the two, which can effectively reduce the measurement error caused by the loop resistance, and can also avoid touching other male needles during measurement to prevent short circuit between male needles and cause safety accidents such as equipment damage, the measurement line of the prior art usually adopts the mode of connecting a full-naked alligator clip, a half-naked alligator clip or a full-sheathed alligator clip to the male needle of the circuit breaker socket, the loop resistance of the measurement line measured by this mode is 1200 mu Omega, the pulling-out force is 5 N, the measurement line measured by this mode has the problems of small contact area, falling off during measurement, large contact resistance and easy to touch other line male needles, and this mode has safety risks and is easy to cause short circuit of other control lines of the measured circuit breaker, even burn the control lines of the circuit breaker, and affect the safe measurement of the circuit breaker.
[0019] 2, the special plug-in part adopts the connection mode of large female and small female, the large female and the small female are insulated and packaged with the connecting wire, have waterproof effect, the large female is directly connected with the multi-purpose circuit breaker mechanical characteristic measuring instrument during measurement, the small female is directly connected with the circuit breaker secondary plug, the large female and the small female are more easy to operate compared with the crocodile clamp; the large female and the small female of the special plug-in part are provided with transverse anti-skid lines on the outer insulation sleeves, the insulation sleeve packaging of the large female and the small female is connected with the insulation packaging of the connecting wire, and a bending-resistant and break-resistant sheath is arranged at the connection position, so that the sliding problem caused by large plug-in force during connection can be effectively solved; the large female of the special plug-in part is connected with the multi-purpose circuit breaker mechanical characteristic measuring instrument, so that the large female and the multi-purpose circuit breaker mechanical characteristic measuring instrument can be effectively connected, the pull-out force is moderate, the contact area is large, the connection is tight, and the large female will not fall off during measurement; the small female of the special plug-in part is connected with the circuit breaker socket, so that the small female and the socket male pin can be effectively connected, the pull-out force is moderate, the contact area is large, the elastic pressing piece and the male pin are tightly pressed, and the small female will not fall off during measurement; the large female and the small female of the special plug-in part are made of pure copper plated with silver, and the elastic pressing piece is made of phosphor copper plated with silver, so that the loop resistance is small, and the measurement error caused by the loop resistance can be effectively reduced; the connecting wire of the special plug-in part adopts a multi-strand oxygen-free pure copper wire 2.5 flat connecting wire, so that the direct current resistance is small, and the measurement error caused by the direct current resistance of the connecting wire can be effectively reduced; the tail end of the metal body of the large female and the small female of the special plug-in part is provided with a metal anti-skid transverse line, compared with the traditional female head, the metal part and the insulation packaging can be effectively prevented from falling off; compared with the crocodile clamp, the special plug-in part can effectively solve the short circuit problem caused by touching other lines. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a structural schematic diagram of the utility model in example 1;
[0021] Figure 2 is a structural schematic diagram of the small female in example 1;
[0022] Figure 3 is a structural schematic diagram of the metal body of the small female in example 1;
[0023] Figure 4 is a structural schematic diagram of the pressing ring of the small female in example 1;
[0024] Figure 5 is a top view of the elastic pressing piece in example 1;
[0025] Figure 6 is a structural schematic diagram of the large female in example 1;
[0026] Figure 7 is a structural schematic diagram of the metal body of the large female in example 1;
[0027] Figure 8This is a schematic diagram of the elastic compression groove in Example 1.
[0028] In the diagram, 1 is the small female connector, 2 is the connecting wire, 3 is the large female connector, 4 is the insulating sleeve, 5 is the bend-resistant and break-proof sheath, 6 is the small female connector metal body, 7 is the small female connector groove, 8 is the metal anti-slip transverse texture, 9 is the arc-shaped connecting plate, 10 is the small female connector pressure ring, 11 is the elastic pressure plate, 12 is the elastic pressure plate groove, 13 is the connecting groove, 14 is the elastic inclined plate, 15 is the arc-shaped spring plate, 16 is the fixing pressure plate, 17 is the large female connector groove, 18 is the large female connector metal body, and 19 is the pressure ring groove. Detailed Implementation
[0029] The present invention will be further described in detail below through specific embodiments, but this does not limit the scope of the present invention.
[0030] Example 1
[0031] A special plug-in component for measuring the mechanical characteristics of circuit breakers, the structure of which is as follows: Figures 1-8 As shown, it includes a small female connector 1 and a large female connector 3 connected by a connecting line 2. The small female connector 1 includes a small female connector metal body 6, and the large female connector 3 includes a large female connector metal body 18. The small female connector metal body 6 is provided with a small female connector groove 7 on the side away from the connecting line 2. An elastic pressure plate 11 is provided in the small female connector groove 7. The elastic pressure plate 11 cooperates with an elastic pressure plate groove 12 provided on the side of the small female connector metal body 6 and connected to the small female connector groove 7. The elastic pressure plate 11 is connected to the small female connector metal body 6 through a small female connector pressure ring 10 provided at the end of the small female connector groove 7 away from the connecting line 2. An insulating sleeve 4 is encapsulated on the small female connector metal body 6 and the large female connector metal body 18.
[0032] The elastic pressure plate 11 includes a fixed pressure plate 16 that mates with the small female pressure ring 10. The fixed pressure plate 16 has an elastic inclined piece 14 at one end away from the small female pressure ring 10, and an arc-shaped spring piece 15 at the tail end of the elastic inclined piece 14 that mates with the small female groove 7. The small female groove 7 has a pressure ring groove 19 at one end away from the connecting line 2 that mates with the small female pressure ring 10; the large female metal body 18 has a large female groove 17 on one side away from the connecting line 2.
[0033] The insulating sleeve 4 is fitted with transverse anti-slip grooves, and a bending-resistant and breakage-resistant sheath 5 is provided at the connection between the insulating sleeve 4 and the connecting wire 2. The tail ends of the small female metal body 6 and the large female metal body 18 are respectively provided with transverse anti-slip grooves 8 that cooperate with the insulating sleeve 4. The tail ends of the small female metal body 6 and the large female metal body 18 are provided with arc-shaped connecting plates 9 that connect to the connecting wire 2, and the arc-shaped connecting plate 9 has a connecting groove 13 that connects to the connecting wire 2. The connecting wire 2 is fitted with an insulating encapsulation that connects to the bending-resistant and breakage-resistant sheath 5. The insulating sleeve 4 is a flame-retardant plastic shell.
[0034] The special plug-in part adopts a connection line 2 and a large female socket 3 and a small female socket 1 connection mode, the large female socket 3, the small female socket 1 and the connection line 2 adopt an integrated packaging, and have a waterproof effect, wherein the large female socket 3 and the small female socket 1 are packaged by an insulating sleeve 4, in actual use, the large female socket 3 is directly connected with a mechanical characteristic measuring line of a multipurpose circuit breaker, and the small female socket 1 is directly connected with a secondary plug of the circuit breaker, and compared with an alligator clip, the special plug-in part is more convenient to operate; the insulating sleeve 4 of the large female socket 3 and the small female socket 1 has sleeve transverse anti-skid lines, which can effectively solve the sliding problem caused by large plug-in force; the insulating sleeve 4 of the large female socket 3 and the small female socket 1 is connected with the insulating packaging of the connection line 2 through a bending-resistant and break-resistant sheath 5, which can effectively reduce the damage between the large female socket 3, the small female socket 1 and the connection line 2 caused by long-term use.
[0035] The large female socket 3 of the special plug-in part is connected with a mechanical characteristic measuring instrument of a multipurpose circuit breaker, and through a large female socket groove 17 on a large female socket metal body 18, the large female socket 3 can be effectively connected with a male needle of a mechanical characteristic measuring line of the multipurpose circuit breaker, the plug-out force is moderate, the contact area is large, the connection is tight, and the large female socket 3 will not fall off in the measurement process; the small female socket 1 of the special plug-in part is connected with a secondary plug of a circuit breaker, and through a small female socket groove 7 on a small female socket metal body 6, the small female socket 1 can be effectively connected with a male needle of a secondary plug of the circuit breaker, the plug-out force is moderate, the contact area is large, an elastic pressing piece 11 in the small female socket groove 7 can be tightly pressed with the male needle, the small female socket 1 will not fall off in the measurement process, a fixed pressing piece 16 of the elastic pressing piece 11 is fixed in a pressing ring groove 19 at the end of the small female socket groove 7 through a small female socket pressing ring 10, when the small female socket is inserted into the male needle, the male needle is in contact with an elastic inclined piece 14, with the continuous insertion of the male needle into the small female socket groove 7, the elastic inclined piece 14 gradually moves to an elastic pressing piece groove 12, under the premise that the male needle does not block the small female socket groove 7, the elastic pressing piece 11 can always generate a certain extrusion effect on the male needle through the elastic inclined piece 14, so as to prevent the small female socket 1 from separating from the male needle; an arc-shaped elastic piece 15 can prevent the elastic inclined piece 14 from generating an excessive extrusion force on the male needle, so as to prevent the male needle from separating from the small female socket 1; the large female socket 3 and the small female socket 1 of the special plug-in part are made of pure copper plated with silver, and the elastic pressing piece 11 is made of phosphor copper plated with silver, the loop resistance is small, and the measurement error caused by the loop resistance can be effectively reduced.
[0036] The connecting line 2 of the special plug connector adopts a plurality of strands of oxygen-free pure copper wire 2.5 flat soft copper wire, which has a small direct current resistance, and can effectively reduce the measurement error caused by the direct current resistance of the connecting line 2; the outer layer of the large female connector 3 and the small female connector 1 of the special plug connector are packaged with an insulating sleeve 4, compared with the crocodile clip, the short circuit problem caused by touching other lines can be effectively solved; the tail of the large female connector metal body 18 and the small female connector metal body 6 is provided with a metal anti-skid transverse line 8, compared with the traditional female connector, the problem of metal part and insulation packaging falling off can be effectively solved; the arc-shaped connecting plate 9 can resist the shaking force generated between the small female connector metal body 6 and the large female connector metal body 18 and the connecting line 2, and prevent the small female connector 1, the large female connector 3 and the connecting line 2 from being separated; the connecting groove 13 facilitates the welding of the connecting line 2 on the small female connector metal body 6 and the large female connector metal body 18.
[0037] Example 2
[0038] A special plug connector for measuring the mechanical characteristics of a circuit breaker, which is different from example 1 in that the arc-shaped elastic sheet 15 is provided with an elastic sheet spring connected with the small female connector groove 7.
[0039] Example 3
[0040] A special plug connector for measuring the mechanical characteristics of a circuit breaker, which is different from example 1 in that the elastic inclined sheet 14 is provided with a pressing sheet spring connected with the small female connector metal body 6.
[0041] Example 4
[0042] A special plug connector for measuring the mechanical characteristics of a circuit breaker, which is different from example 1 in that the small female connector pressing ring 10 is provided with a pressing ring protrusion on the inner side close to one end of the small female connector metal body 6, and the pressing ring protrusion is matched with a pressing ring groove 19 arranged on the small female connector metal body 6; the elastic pressing sheet groove 12 is provided with an arc-shaped pressing sheet groove at both ends.
[0043] The above only describes the preferred embodiments of the present application, but is not limited to the above examples, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A circuit breaker mechanical characteristic measurement dedicated plug-in characterized by, The small female connector and the large female connector are connected by a connecting wire, the small female connector comprises a small female connector metal body, and the large female connector comprises a large female connector metal body; a small female connector groove is arranged on the side of the small female connector metal body away from the connecting wire, an elastic pressing piece is arranged in the small female connector groove, the elastic pressing piece is matched with an elastic pressing piece groove arranged on the side of the small female connector metal body and communicated with the small female connector groove, and the elastic pressing piece is connected with the small female connector metal body through a small female connector pressing ring arranged at the end of the small female connector groove away from the connecting wire; and an insulating sleeve is arranged on the small female connector metal body and the large female connector metal body.
2. The circuit breaker mechanical characteristic measurement dedicated plug-in according to claim 1, characterized in that, The elastic pressing piece comprises a fixed pressing piece matched with the small female connector pressing ring, an elastic inclined piece is arranged at the end of the fixed pressing piece away from the small female connector pressing ring, and an arc-shaped elastic piece matched with the small female connector groove is arranged at the tail end of the elastic inclined piece.
3. The circuit breaker mechanical characteristic measurement dedicated plug-in according to claim 1, characterized in that, The end of the small female connector groove away from the connecting wire is provided with a pressing ring groove matched with the small female connector pressing ring; and the side of the large female connector metal body away from the connecting wire is provided with a large female connector groove.
4. The circuit breaker mechanical characteristic measurement dedicated plug-in according to claim 1, characterized in that, A sleeve transverse anti-skid line is arranged on the insulating sleeve, and a bending-resistant and breakage-resistant protective sleeve is arranged at the connecting position of the insulating sleeve and the connecting wire.
5. The circuit breaker mechanical characteristic measuring dedicated plug-in according to claim 4, characterized in that, The tail ends of the small female connector metal body and the large female connector metal body are respectively provided with metal anti-skid transverse lines matched with the insulating sleeve.
6. The circuit breaker mechanical characteristic measurement dedicated plug-in according to claim 1, characterized in that, The tail ends of the small female connector metal body and the large female connector metal body are provided with arc-shaped connecting plates connected with the connecting wire, and the arc-shaped connecting plates are provided with connecting grooves connected with the connecting wire.
7. The circuit breaker mechanical characteristic measurement dedicated plug-in according to claim 1, characterized in that, An insulating package connected with the bending-resistant and breakage-resistant protective sleeve is arranged on the connecting wire.
8. The circuit breaker mechanical characteristic measurement dedicated plug-in according to claim 1, characterized in that, The insulating sleeve is a flame-retardant plastic shell.