Low-voltage circuit breaker detection device

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a low-voltage circuit breaker detection device, which comprises a detection meter and a detection pen matched with the detection meter, a socket is arranged on the side wall surface of the detection meter, a clamping seat is detachably arranged at the position, corresponding to the front of the socket, of the side wall surface of the detection meter, and an insertion rod is fixedly arranged at the end part of the detection pen. The opposite side of one end, facing the socket, of the clamping seat is fixedly provided with two clamping assemblies, each clamping assembly comprises an elastic piece, the elastic piece axially extends along the edge of the clamping seat, the end of the elastic piece is fixedly provided with a clamping plate, the clamping plate radially extends towards the middle of the clamping seat, the middle of the clamping plate is provided with a center groove, and the other end, opposite to the elastic piece, of the clamping plate is axially and fixedly provided with a pressing plate. The two clamping assemblies are distributed on the opposite sides of the center with the central axis of the clamping base as the symmetry axis, and clamping grooves matched with the clamping plates are formed in the inserting rods. According to the utility model, the detection pen cannot be pulled out of the detection meter accidentally, and meanwhile, the clamping assembly enables the detection pen to be more convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a low-voltage circuit breaker detection device. Background Art

[0002] Low-voltage circuit breakers are important switching devices in power systems. They can connect and disconnect normal load currents, overload circuits, and short-circuit currents. The electrical life of low-voltage circuit breakers is closely related to the contacts of the circuit breaker. When the contacts are disconnected, an arc will be generated, which will burn the contact system. This will increase the contact resistance of the circuit breaker, increase the temperature rise of the circuit breaker, and reduce the breaking capacity of the circuit breaker, thereby affecting the service life of the circuit breaker.

[0003] In order to determine the service life of the circuit breaker, a circuit breaker detection device is needed. At present, the low-voltage circuit breaker detection device consists of a test lead, a detector and a conversion switch. The plug of the test lead is plugged into the jack on the detector, which is convenient for storage after disassembly. However, the connection between the test lead and the detector is generally plug-in, which is easy to loosen accidentally, affecting the detection.

[0004] After searching, Chinese patent publication number CN213184803U discloses a low-voltage circuit breaker detection device, which belongs to the field of low-voltage circuit breaker detection technology. The low-voltage circuit breaker detection device includes a low-voltage circuit breaker detection component, a test lead body and a clamping component. Operate the flip pressure plate, insert the card slot on the pressure plate into the connecting screw member, thread the clamping thread kit on the end of the connecting screw member, rotate the clamping thread kit, and through the principle of thread transmission, the clamping thread kit clamps the pressure plate, the pressure plate clamps the clamping block, the clamping block clamps one side of the joint on the test lead body, and the support block clamps the other side of the joint on the test lead body, thereby effectively improving the problem of the lack of fixed structure of the existing low-voltage circuit breaker detection device plug and socket. On the one hand, it reduces the situation of the joint and the socket being pulled out of contact due to accidental external force, and on the other hand, it reduces the situation of the joint and the socket being easily loosened due to long-term repeated plugging and unplugging, resulting in poor contact.

[0005] The above-mentioned patent discloses a threaded kit to fix the connection between the test leads and the detector, thereby improving the stability of the test leads and the detector. However, the screws need to be tightened during operation, and the screws are prone to being over-tightened or over-loosened. Furthermore, the tightening method cannot meet the requirements for quick assembly.

[0006] To this end, we propose a low voltage circuit breaker detection device. Utility Model Content

[0007] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a low-voltage circuit breaker detection device.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a low-voltage circuit breaker detection device, including a detection meter and a detection pen matched with the detection meter, the side wall of the detection meter is integrally formed with a socket, a groove is provided in front of the socket, and a card holder is detachably installed on the side wall of the detection meter corresponding to the front of the socket, a plug rod is fixedly installed on the end of the detection pen, and two groups of card-connecting components are fixedly installed on the opposite side of one end of the card holder facing the socket, the card-connecting components include a spring sheet, the spring sheet extends axially along the edge of the card holder and a card plate is fixedly installed on its end, the card plate extends radially toward the middle of the card holder, a center groove is provided in the middle of the card plate, and a pressure plate is axially fixedly installed on the other end of the card plate opposite to the spring sheet, the two groups of card-connecting components are distributed on opposite sides of the center with the central axis of the card holder as the axis of symmetry, and a card slot matching the card plate is provided on the plug rod. Beneficial Effects

[0009] The utility model provides a low-voltage circuit breaker detection device, which has the following beneficial effects:

[0010] When in use, the insertion rod is directly passed through between the two groups of card-connecting components, and the insertion rod squeezes the two groups of card-connecting components open until the card slot and the card plate overlap, and the card plate is inserted into the card slot under the action of the elastic force of the spring sheet to fix the detection pen. When the detection pen needs to be removed, the two groups of pressure plates are pressed to make the two groups of pressure plates approach each other, and then the two groups of card plates move away from each other and detach from the card slot to complete the disassembly, so that the detection pen will not fall off the test table due to accidental pulling. At the same time, the card-connecting component can make the installation and removal of the detection pen more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0012] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2This is a structural breakdown diagram of the utility model;

[0015] Figure 3 This is a disassembled diagram of the card holder structure of the utility model;

[0016] Figure 4 This is another disassembled diagram of the card holder structure of the utility model.

[0017] Legend:

[0018] 1. Test table; 2. Test pen; 3. Socket; 4. Card holder; 5. Insert rod; 6. Card slot; 7. Spring piece; 8. Card plate; 9. Center slot; 10. Press plate; 11. Avoidance slot; 12. Female contact; 13. Rubber sleeve; 14. Sub-contact. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0020] A low voltage circuit breaker detection device, such as Figure 1-Figure 4 As shown, it includes a test table 1 and a test pen 2 matched with the test table 1. In this embodiment, the working principles of the test table 1 and the test pen 2 are known to those skilled in the art and will not be elaborated here. The side wall of the test table 1 is integrally formed with a socket 3, and a groove is provided in front of the socket 3. The side wall of the test table 1 is also detachably provided with a holder 4 corresponding to the position in front of the socket 3. The middle part of the holder 4 is axially hollow and coincides with the groove of the socket 3. An insertion rod 5 is fixedly installed at the end of the test pen 2. When in use, the insertion rod 5 is passed through the holder 4 and inserted into the socket 3, thereby being electrically connected to the test table 1 to complete the preparation for the test.

[0021] In particular, two groups of card-connecting components are fixedly installed on the opposite side of one end of the card base 4 facing the socket 3, and the card-connecting components include spring pieces 7, which extend axially along the edge of the card base 4 and are fixedly installed with a card plate 8 at its end. The card plate 8 is a semicircular plate, and a center groove 9 is opened in the middle of the card plate 8. A pressure plate 10 is axially fixedly installed on the other end of the card plate 8 opposite to the spring piece 7. The two groups of card-connecting components are distributed on opposite sides of the center with the central axis of the card base 4 as the axis of symmetry, so that the two groups of card plates 8 constitute a virtual circular plate, and the two groups of center grooves 9 also form a virtual circular groove. The two groups of card-connecting components are staggered with each other. Correspondingly, a card groove 6 is opened on the plug rod 5. The groove 6 is an annular groove and the thickness of the groove 6 is 1.5 times the thickness of the card plate 8. When in use, the insertion rod 5 is directly passed through the two groups of card components, and the insertion rod 5 squeezes the two groups of card components until the groove 6 overlaps with the card plate 8. Under the action of the elastic force of the spring piece 7, the card plate 8 is inserted into the groove 6 to fix the detection pen 2. When the detection pen 2 needs to be removed, the two groups of pressure plates 10 are pressed to make the two groups of pressure plates 10 approach each other, and then the two groups of card plates 8 move away from each other and detach from the groove 6 to complete the disassembly, so that the detection pen 2 will not fall out of the detection table 1 due to accidental pulling. At the same time, the card assembly can make the installation and removal of the detection pen 2 more convenient.

[0022] In order to make it easier for the card plate 8 to detach from the card slot 6 when the pressure plate 10 is pressed, an escape groove 11 is provided on the end of the card plate 8 away from the spring piece 7, and the escape groove 11 is communicated with the center groove 9. After pressing the pressure plate 10, the card plate 8 can quickly detach from the card slot 6 by using the channel created by the escape groove 11.

[0023] Furthermore, a female contact 12 is fixedly installed in the groove opened in front of the socket 3, and a sub-contact 14 matching the female contact 12 is fixedly installed at the end of the insertion rod 5, and the female contact 12 and the sub-contact 14 are electrically connected.

[0024] Furthermore, the outer wall surfaces of the card holder 4 and the socket 3 are also sleeved with a rubber sleeve 13, the rubber sleeve 13 is made of rubber material, and the rubber sleeve 13 is provided with anti-slip grooves at the position corresponding to the pressing plate 10, so as to facilitate the user to identify and press.

[0025] The spring piece 7 is a steel sheet with a thickness of 1 mm.

[0026] In other embodiments, in order to realize the multi-functional detection function of the detection pen 2, there are multiple groups of sub-contacts 14 and corresponding multiple groups of mother contacts 12. In order to match the sub-contacts 14 with the mother contacts 12, the detection pen 2 will not rotate easily when in use. The inner edge of the card slot 6 opened on the insertion rod 5 is a polygon and the number of sides of the polygon is the same as that of the sub-contact 14. The center groove 9 is a polygonal groove matching the card slot 6. The sub-contacts 14 are distributed on each edge corresponding to the polygon of the card slot 6, so that it will not rotate freely due to the limitation of the card connection component.

[0027] The working principle of the utility model is as follows: when in use, the insertion rod 5 is directly passed through between the two groups of card-connecting components, and the insertion rod 5 squeezes the two groups of card-connecting components apart until the card slot 6 overlaps with the card plate 8, and the card plate 8 is inserted into the card slot 6 under the action of the elastic force of the spring piece 7 to fix the detection pen 2. When the detection pen 2 needs to be removed, the two groups of pressure plates 10 are pressed to make the two groups of pressure plates 10 approach each other, and then the two groups of card plates 8 move away from each other and detach from the card slot 6 to complete the disassembly, so that the detection pen 2 will not fall out of the detection table 1 due to accidental pulling. At the same time, the card-connecting component can make the installation and removal of the detection pen 2 more convenient.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A low voltage circuit breaker detection device, comprising a detection meter (1) and a detection pen (2) matched with the detection meter (1), characterized in that: The side wall of the detection table (1) is integrally formed with a socket (3), a groove is provided in front of the socket (3), and a holder (4) is detachably installed on the side wall of the detection table (1) at a position corresponding to the front of the socket (3). An insertion rod (5) is fixedly installed at the end of the detection pen (2), and two groups of clamping components are fixedly installed on the opposite side of one end of the holder (4) facing the socket (3), and the clamping components include a spring (7), the spring (7) extends axially along the edge of the holder (4) and a clamping plate (8) is fixedly installed at its end, the clamping plate (8) extends radially toward the middle of the holder (4), a center groove (9) is provided in the middle of the clamping plate (8), and a pressure plate (10) is axially fixedly installed on the other end of the clamping plate (8) opposite to the spring (7), and the two groups of clamping components are distributed on opposite sides of the center with the central axis of the holder (4) as the axis of symmetry, and a clamping groove (6) matching the clamping plate (8) is provided on the insertion rod (5).

2. A low voltage circuit breaker detection device according to claim 1, characterized in that: An escape groove (11) is provided on one end of the clamping plate (8) away from the spring sheet (7), and the escape groove (11) is communicated with the central groove (9).

3. A low voltage circuit breaker detection device according to claim 1, characterized in that: The clamping plate (8) is a semicircular plate, the clamping groove (6) is an annular groove, and the thickness of the clamping groove (6) is 1.5 times the thickness of the clamping plate (8).

4. A low voltage circuit breaker detection device according to claim 1, characterized in that: A female contact (12) is fixedly installed in a groove opened in front of the socket (3), and a sub-contact (14) matching the female contact (12) is fixedly installed at the end of the insertion rod (5), and the female contact (12) and the sub-contact (14) are electrically connected.

5. A low voltage circuit breaker detection device according to claim 4, characterized in that: The sub-contacts (14) have at least three groups, the corresponding mother contacts (12) and the sub-contacts (14) are the same in number, the inner edge of the card slot (6) provided on the insertion rod (5) is a polygon and the number of sides of the polygon is the same as the number of sub-contacts (14), the central groove (9) is a polygonal groove matching the card slot (6), and the sub-contacts (14) are distributed on each side corresponding to the polygon of the card slot (6).

6. A low voltage circuit breaker detection device according to claim 1, characterized in that: The middle part of the card seat (4) is axially hollow and overlaps with the slot of the socket (3).

7. A low voltage circuit breaker detection device according to claim 1, characterized in that: The spring sheet (7) is a steel sheet with a thickness of 1 mm.

8. A low voltage circuit breaker detection device according to claim 1, characterized in that: The outer wall surfaces of the card seat (4) and the socket (3) are also sleeved with a rubber sleeve (13), the rubber sleeve (13) is made of rubber material, and the rubber sleeve (13) is provided with anti-slip grooves at the position corresponding to the pressure plate (10).

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