Rogowski coil
Through the base design of integrated mounting and fixing seat, combined with insulating head, locking block and return spring, the problem of Rochester coil not being tightly fixed is solved, the measurement accuracy and stability are improved, and the coil body is fixed and insulating separation is ensured.
Patent Information
- Application Number
- CN202420605638.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The existing Roche coils are not tight enough when fixing both ends of the coil body, which easily moves and leads to inaccurate measurement results.
A base with integrated mounting base, first fixing seat and second fixing seat is designed, and the coil body is fixed through the first jack and the second jack, and the stability of the coil body is ensured by using an insulating head, a locking block and a return spring. Fixed, combined with guide bevel surfaces to simplify the installation process.
The fixity of the coil body is improved, the accuracy of the measurement results is ensured, and excessive pressure of the insulating head is prevented through insulation separation and limiting mechanisms, thereby achieving stable connection and fixing of the coil.
Smart Images
Figure CN222189376U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of Rogowski coils and relates to a Rogowski coil. Background Art
[0002] Rogowski coil is an AC current sensor, a hollow ring-shaped coil, available in flexible and rigid types. It can be directly put on the conductor to measure AC current. Rogowski coil is suitable for measuring AC current in a wide frequency range. It has no special requirements for conductors and sizes. It has a fast instantaneous response capability and is widely used in situations where traditional current measurement devices such as current transformers cannot be used. It is used for current measurement, especially high-frequency and large current measurement. The theoretical basis for Rogowski coil to measure current is Faraday's law of electromagnetic induction and Ampere's loop law. When the measured current passes through the center of the Rogowski coil along the axis, a corresponding magnetic field is generated in the volume surrounded by the ring winding.
[0003] From a structural point of view, the two ends of the coil body need to be extended into the base body for fixation. In the prior art, two different fixing seats are often manufactured and installed on the base body, and then the two ends of the coil body are fixed separately. The two ends of the coil body are not fixed tightly enough and are prone to movement, resulting in inaccurate measurement results. There is a lot of room for improvement. Summary of the invention
[0004] The utility model aims to solve the above problems in the prior art and proposes a Rogowski coil.
[0005] The purpose of the utility model can be achieved through the following technical solutions: a Rogowski coil, comprising:
[0006] A base, which is integrally provided with a mounting base, a first fixing base and a second fixing base, wherein the mounting base is located between the first fixing base and the second fixing base, the first fixing base is provided with a first plug hole, and the second fixing base is provided with a second plug hole;
[0007] A circuit board, which is detachably connected to the mounting seat;
[0008] The coil body has one end which is inserted into the first insertion hole and contacts the circuit board, and the other end which is inserted into the second insertion hole and is separated from the circuit board.
[0009] In the above-mentioned Rogowski coil, it also includes an insulating head, which is sleeved on one end of the coil body that passes through the second jack, and the coil body is in contact with the circuit board through the insulating head.
[0010] In the above-mentioned Rogowski coil, the insulating head extends from the end of the coil body toward the middle so as to exceed the second insertion hole, and the coil body is inserted into the second insertion hole through the insulating head.
[0011] In the above-mentioned Rogowski coil, the insulating head is a conical head, the second jack is a conical hole adapted to the shape of the insulating head, and when the coil body contacts the circuit board through the insulating head, the conical head contacts the conical hole.
[0012] In the above-mentioned Rogowski coil, it also includes a locking block, which is connected to the base and can move along the radial direction of the second jack. When the coil body contacts the circuit board through the insulating head, the locking block can move to contact the end of the insulating head away from the circuit board.
[0013] In the above-mentioned Rogowski coil, a return spring is also included, one end of which is fixed relative to the base, and the other end of which is in contact with the locking block, and the return spring pushes the locking block to approach the second fixing seat.
[0014] In the above-mentioned Rogowski coil, the locking block is provided with a guiding slope, and when the coil body is inserted into the second insertion hole through the insulating head, the locking block can be pushed by the insulating head through the guiding slope and away from the second fixing seat.
[0015] In the above-mentioned Rogowski coil, the mounting seat is provided with a slot, and the circuit board is inserted into the slot.
[0016] In the above-mentioned Rogowski coil, it also includes a shell, which is detachably connected to the base, and the shell can cover the mounting seat, the first fixing seat, the second fixing seat, the insulating head, the locking block and the reset spring.
[0017] In the above-mentioned Rogowski coil, it also includes a cover body, which is detachably connected to the shell, and the base is arranged between the shell and the cover body.
[0018] Compared with the prior art, the beneficial effects of the utility model are:
[0019] 1. The mounting base, the first fixing base and the second fixing base are integrated on the base. The two ends of the coil body are fixed by the first jack of the first fixing base and the second jack of the second fixing base. At the same time, the fixation of the circuit board and the two ends of the coil body, as well as the connection relationship between the circuit board and the two ends of the coil body are ensured, so that the measurement result is more accurate.
[0020] 2. The coil body contacts the circuit board through the insulating head, so that the end of the coil body can support the circuit board through the insulating head, ensuring that the end of the coil body is insulated and separated from the circuit board.
[0021] 3. When the coil body contacts the circuit board through the insulating head, the conical head contacts the conical hole, thus playing a certain limiting role, preventing the insulating head from continuing to push inward and exerting a certain pressure on the circuit board.
[0022] 4. The reset spring pushes the locking block close to the second fixing seat. When the coil body contacts the circuit board through the insulating head, the reset spring pushes the locking block to move to contact the end of the insulating head away from the circuit board, thereby clamping the insulating head between the circuit board and the locking block to limit its movement, further ensuring the fixation of the coil body.
[0023] 5. The guide bevel can play a guiding role. When the coil body is inserted into the second plug hole through the insulating head, the locking block can be pushed by the insulating head through the guide bevel and away from the second fixing seat, so there is no need to manually push the locking block away to avoid the insulating head. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 The figure is a schematic diagram of the structure of the Rogowski coil of the utility model.
[0025] Figure 2 The exploded view of the Rogowski coil of the present invention.
[0026] Figure 3 This is a schematic structural diagram of the Rogowski coil of the utility model from another perspective.
[0027] Figure 4 This is an exploded view of the Rogowski coil of the present invention from another perspective.
[0028] Figure 5 The figure is a schematic diagram of the internal structure of the Rogowski coil of the utility model.
[0029] In the figure, 100, base; 110, mounting seat; 111, slot; 120, first fixing seat; 121, first plug hole; 130, second fixing seat; 131, second plug hole; 200, circuit board; 300, coil body; 400, insulating head; 500, locking block; 510, guide ramp; 600, return spring; 700, shell; 800, cover. DETAILED DESCRIPTION
[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0032] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0034] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
[0036] like Figure 1-Figure 5 As shown, a Rogowski coil includes: a base 100 , a circuit board 200 and a coil body 300 .
[0037] The base 100 is integrally provided with a mounting base 110, a first fixing base 120 and a second fixing base 130, wherein the mounting base 110 is located between the first fixing base 120 and the second fixing base 130, the first fixing base 120 is provided with a first plug hole 121, and the second fixing base 130 is provided with a second plug hole 131.
[0038] The circuit board 200 is detachably connected to the mounting base 110 .
[0039] One end of the coil body 300 is inserted into the first insertion hole 121 and contacts the circuit board 200 , and the other end is inserted into the second insertion hole 131 and is separated from the circuit board 200 .
[0040] In this embodiment, the mounting base 110, the first fixing base 120 and the second fixing base 130 are integrated on the base 100, and the two ends of the coil body 300 are fixed by the first socket 121 of the first fixing base 120 and the second socket 131 of the second fixing base 130, thereby ensuring the fixation of the two ends of the circuit board 200 and the coil body 300, as well as the connection relationship between the two ends of the circuit board 200 and the coil body 300, so that the measurement result is more accurate.
[0041] like Figure 1-Figure 5 As shown, based on the above embodiment, it also includes an insulating head 400, which is sleeved on one end of the coil body 300 passing through the second jack 131, and the coil body 300 is in contact with the circuit board 200 through the insulating head 400.
[0042] In this embodiment, the coil body 300 contacts the circuit board 200 through the insulating head 400, so that the end of the coil body 300 can support the circuit board 200 through the insulating head 400, ensuring that the end of the coil body 300 is insulated and separated from the circuit board 200.
[0043] Preferably, the insulating head 400 is an insulating plastic part.
[0044] like Figure 1-Figure 5 As shown, based on the above embodiment, the insulating head 400 extends from the end of the coil body 300 toward the middle so as to exceed the second insertion hole 131 , and the coil body 300 is inserted into the second insertion hole 131 through the insulating head 400 .
[0045] Specifically, the insulating head 400 is a conical head, and the second jack 131 is a conical hole that matches the shape of the insulating head 400 . When the coil body 300 contacts the circuit board 200 through the insulating head 400 , the conical head contacts the conical hole.
[0046] In this embodiment, when the coil body 300 contacts the circuit board 200 through the insulating head 400, the conical head contacts the conical hole, thereby playing a certain limiting role and preventing the insulating head 400 from continuing to push inward to exert a certain pressure on the circuit board 200.
[0047] like Figure 1-Figure 5As shown, on the basis of the above embodiment, it also includes a locking block 500, which is connected to the base 100 and can be moved along the radial direction of the second jack 131. When the coil body 300 contacts the circuit board 200 through the insulating head 400, the locking block 500 can be moved to contact the end of the insulating head 400 away from the circuit board 200.
[0048] In this embodiment, when the coil body 300 contacts the circuit board 200 through the insulating head 400, the locking block 500 can be moved to contact the end of the insulating head 400 away from the circuit board 200, thereby clamping the insulating head 400 between the circuit board 200 and the locking block 500 to limit its movement, further ensuring the fixation of the coil body 300.
[0049] like Figure 1-Figure 5 As shown, based on the above embodiment, a return spring 600 is further included, one end of the return spring 600 is fixed relative to the base 100, and the other end is in contact with the locking block 500, and the return spring 600 pushes the locking block 500 close to the second fixing seat 130.
[0050] In this embodiment, the return spring 600 pushes the locking block 500 to be close to the second fixed seat 130. When the coil body 300 contacts the circuit board 200 through the insulating head 400, the return spring 600 pushes the locking block 500 to move to contact the end of the insulating head 400 away from the circuit board 200, thereby clamping the insulating head 400 between the circuit board 200 and the locking block 500 to limit its movement, further ensuring the fixation of the coil body 300.
[0051] like Figure 1-Figure 5 As shown, based on the above embodiment, the locking block 500 is provided with a guiding slope 510, and when the coil body 300 is inserted into the second plug hole 131 through the insulating head 400, the locking block 500 can be pushed by the insulating head 400 through the guiding slope 510 and away from the second fixing seat 130.
[0052] In this embodiment, the guide bevel 510 can play a guiding role. When the coil body 300 is inserted into the second hole 131 through the insulating head 400, the locking block 500 can be pushed by the insulating head 400 through the guide bevel 510 and away from the second fixing seat 130, so there is no need to manually push the locking block 500 away to avoid the insulating head 400.
[0053] like Figure 1-Figure 5 As shown, on the basis of the above embodiment, the mounting seat 110 is provided with a slot 111 , and the circuit board 200 is inserted into the slot 111 .
[0054] In this embodiment, the circuit board 200 is inserted into the slot 111 to achieve a detachable connection between the circuit board 200 and the mounting base 110 .
[0055] like Figure 1-Figure 5 As shown, based on the above embodiment, it also includes a shell 700, and the shell 700 is detachably connected to the base 100, and the shell 700 can cover the mounting seat 110, the first fixing seat 120, the second fixing seat 130, the insulating head 400, the locking block 500 and the reset spring 600.
[0056] In this embodiment, the shell 700 can cover the mounting seat 110, the first fixing seat 120, the second fixing seat 130, the insulating head 400, the locking block 500 and the return spring 600 to prevent the external environment from affecting the internal structure to ensure its stability and make the measurement result more accurate.
[0057] Specifically, the detachable connection between the housing 700 and the base 100 may be a snap connection, or may be a mortise and tenon connection.
[0058] like Figure 1-Figure 5 As shown, based on the above embodiment, it further includes a cover body 800 , and the cover body 800 is detachably connected to the shell 700 , and the base 100 is arranged between the shell 700 and the cover body 800 .
[0059] Specifically, the detachable connection between the cover 800 and the housing 700 may be a snap connection or a mortise and tenon connection.
Claims
1. A Rogowski coil, characterized in that: include: A base, which is integrally provided with a mounting base, a first fixing base and a second fixing base, wherein the mounting base is located between the first fixing base and the second fixing base, the first fixing base is provided with a first plug hole, and the second fixing base is provided with a second plug hole; A circuit board, which is detachably connected to the mounting seat; The coil body has one end which is inserted into the first insertion hole and contacts the circuit board, and the other end which is inserted into the second insertion hole and is separated from the circuit board.
2. A Rogowski coil as claimed in claim 1, characterized in that: It also includes an insulating head, which is sleeved on one end of the coil body that passes through the second plug hole, and the coil body is in contact with the circuit board through the insulating head.
3. A Rogowski coil as claimed in claim 2, characterized in that: The insulating head extends from the end of the coil body toward the middle so as to exceed the second insertion hole, and the coil body is inserted into the second insertion hole through the insulating head.
4. A Rogowski coil as claimed in claim 3, characterized in that: The insulating head is a conical head, and the second insertion hole is a conical hole adapted to the shape of the insulating head. When the coil body contacts the circuit board through the insulating head, the conical head contacts the conical hole.
5. A Rogowski coil as claimed in claim 2, characterized in that: It also includes a locking block, which is connected to the base and can move along the radial direction of the second jack. When the coil body contacts the circuit board through the insulating head, the locking block can move to contact the end of the insulating head away from the circuit board.
6. A Rogowski coil as claimed in claim 5, characterized in that: It also includes a return spring, one end of which is fixed relative to the base, and the other end of which is in contact with the locking block, and the return spring pushes the locking block to approach the second fixing seat.
7. A Rogowski coil as claimed in claim 6, characterized in that: The locking block is provided with a guiding inclined surface, and when the coil body is inserted into the second insertion hole through the insulating head, the locking block can be pushed by the insulating head through the guiding inclined surface and away from the second fixing seat.
8. A Rogowski coil as claimed in claim 1, characterized in that: The mounting seat is provided with a slot, and the circuit board is inserted into the slot.
9. A Rogowski coil as claimed in claim 6, characterized in that: It also includes a shell, which is detachably connected to the base, and the shell can cover the mounting seat, the first fixing seat, the second fixing seat, the insulating head, the locking block and the reset spring.
10. A Rogowski coil as claimed in claim 9, characterized in that: It also includes a cover body, which is detachably connected to the shell, and the base is arranged between the shell and the cover body.