Spiral resistor

Abstract

The utility model relates to the technical field of resistors, in particular to a spiral resistor which comprises an outer conductor cylinder, a middle conductive electrode and a spiral adjusting assembly are arranged in the middle of the inner side of the outer conductor cylinder, the spiral adjusting assembly is arranged outside the middle conductive electrode, and a rotary fixing assembly is arranged at the top end of the middle conductive electrode. The rotary fixing assembly is used for stabilizing the insertion and fixation of the spiral adjusting assembly; one end of the spiral adjusting assembly is inserted into the middle conductive electrode, the other end of the spiral adjusting assembly is sleeved outside the inserting column connected with the external conductor cylinder, the packaging body is arranged on the outer side of the external conductor cylinder, the top end of the external conductor cylinder is provided with a top sealing assembly, and the packaging body and the top sealing assembly are matched, connected and packaged. A porcelain block is filled in a part needing to be insulated, and the porcelain block can be detached and replaced after being packaged, so that the adjustment is easy; and the external packaging body is tightly clamped with the packaging cover, and the plastic package is connected to the annular groove part, so that the sealing effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of resistors, in particular to a spiral resistor. Background Art

[0002] At present, the demand for high-current resistors is becoming more and more widespread in industries such as power transmission and distribution, pulse power, and power supply. To achieve a large through-current (above 100kA) resistor, a resistor material with a larger cross-sectional area must be used. Usually, the resistivity of metal resistor materials is low. After increasing the cross-sectional area, if a certain resistance value is to be achieved, the length of the resistor material must be increased, and spiral resistors can meet this requirement.

[0003] The Chinese patent with the publication number CN209216673U discloses a spiral resistor, which solves the problems of the existing large current resistors being large in size, high in production cost, and not meeting the requirements of intelligence and miniaturization. The spiral resistor includes at least one metal resistor body, which includes an intermediate conductive electrode, an external conductive electrode, and a spiral resistor sheet; the intermediate conductive electrode is arranged in the external conductive electrode, the spiral resistor sheet is arranged between the intermediate conductive electrode and the external conductive electrode, and one end of the spiral resistor sheet is electrically connected to the intermediate conductive electrode, and the other end is electrically connected to the external conductive electrode; the intermediate conductive electrode and the external conductive electrode are insulated, and the spiral resistor sheet is insulated from the non-electrically connected part of the intermediate conductive electrode.

[0004] During use, the above-mentioned device directly uses a spiral resistor to increase the transmission distance to connect the middle conductive electrode and the outer conductive electrode. When the inner resistor is damaged or the resistor has a large resistance value and needs to be replaced, the welding fixing method is not easy to remove, which affects the adjustment efficiency and needs to be optimized and improved. Utility Model Content

[0005] The purpose of the utility model is to provide a spiral resistor to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a spiral resistor, comprising an outer conductor tube, wherein a middle conductive electrode is provided in the middle of the inner side of the outer conductor tube:

[0007] A spiral adjustment component is arranged outside the middle conductive electrode, and a rotation fixing component is arranged on the top of the middle conductive electrode, and the rotation fixing component is used to fix the insertion of the spiral adjustment component firmly;

[0008] The packaging body is arranged outside the external conductor tube, a top sealing component is arranged on the top of the external conductor tube, and the packaging body and the top sealing component are matched and connected for packaging.

[0009] Preferably, a plug-in slot is provided inside the middle conductive electrode, and a spiral adjustment component is connected to the outer side of the middle conductive electrode.

[0010] Preferably, the spiral adjustment assembly comprises a plug connector and a positioning hole, and the plug connector is provided with a positioning hole inside.

[0011] Preferably, the spiral adjustment assembly further comprises a spiral resistor and a plug-in barrel, the outer side of the plug-in barrel is connected to the spiral resistor, and the outer side of the spiral resistor is connected to the plug-in barrel.

[0012] Preferably, the right end of the external conductor cylinder is connected to an external lead block, and the right side of the bottom end of the external conductor cylinder is connected to a plug-in column.

[0013] Preferably, the top end of the middle conductive electrode is connected to a rotation fixing assembly, and the rotation fixing assembly includes a rotation post, an insulating plate and a positioning rod. An insulating plate is arranged outside the rotation post, and the top end of the insulating plate is connected to the positioning rod.

[0014] Preferably, an internal lead assembly is disposed at the top end of the rotating post, and the internal lead assembly includes a wire and an internal lead block, and the top end of the wire is connected to the internal lead block.

[0015] Preferably, a packaging body is arranged outside the outer conductor cylinder, and a top sealing assembly is connected to the top of the outer conductor cylinder. The top sealing assembly comprises a packaging cover and an annular groove, and an outer wall of the packaging cover is provided with an annular groove.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] One end of the spiral adjustment component proposed by the utility model is plugged into the interior of the middle conductive electrode, and the other end is sleeved on the outside of the plug-in column connected to the external conductor tube, and is squeezed and fixed. The insulating part needs to be filled with porcelain blocks, and can be disassembled and replaced after packaging, which is easy to adjust.

[0018] The outer packaging body is tightly clamped with the packaging cover and connected to the plastic packaging at the ring groove to improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the utility model;

[0022] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0023] Figure 4 This is a schematic diagram of the structure of the spiral adjustment component of the utility model.

[0024] In the figure: 1, external conductor cylinder; 2, middle conductor electrode; 3, plug-in slot; 4, spiral adjustment assembly; 401, plug connector; 402, spiral resistor; 403, plug-in cylinder; 404, positioning hole; 5, external lead block; 6, internal lead assembly; 601, wire; 602, internal lead block; 7, plug-in column; 8, rotating fixing assembly; 801, rotating connecting column; 802, insulating plate; 803, positioning rod; 9, packaging body; 10, top sealing assembly; 1001, packaging cover; 1002, ring groove. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0026] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0027] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0030] Embodiment 1

[0031] See also Figures 1 to 4 The utility model provides a technical solution: a spiral resistor, comprising an outer conductor tube 1, wherein a middle conductive electrode 2 is arranged in the middle of the inner side of the outer conductor tube 1:

[0032] The spiral adjustment component 4 is arranged outside the middle conductive electrode 2. The top of the middle conductive electrode 2 is provided with a rotation fixing component 8, and the rotation fixing component 8 is used to fix the spiral adjustment component 4 firmly.

[0033] The packaging body 9 is arranged outside the external conductor cylinder 1. A top sealing component 10 is arranged at the top of the external conductor cylinder 1. The packaging body 9 and the top sealing component 10 are matched and connected for packaging;

[0034] One end of the spiral adjustment component 4 is inserted into the middle conductive electrode 2, and the other end is sleeved on the outside of the plug-in column 7 connected to the external conductor tube 1 and squeezed and fixed. The insulating part needs to be filled with porcelain blocks, which can be replaced after packaging and is easy to adjust; the external packaging body 9 is tightly clamped with the packaging cover 1001, and the plastic packaging is connected at the ring groove 1002 to improve the sealing effect.

[0035] Embodiment 2

[0036] On the basis of the first embodiment, the middle conductive electrode 2 is provided with a plug slot 3, and the outer side of the middle conductive electrode 2 is connected with a spiral adjustment component 4, the spiral adjustment component 4 includes a plug connector 401 and a positioning hole 404, and the plug connector 401 is provided with a positioning hole 404, the spiral adjustment component 4 also includes a spiral resistor 402 and a plug barrel 403, the outer side of the plug connector 401 is connected with the spiral resistor 402, and the outer side of the spiral resistor 402 is connected with the plug barrel 403;

[0037] The spiral resistor 402 serves as a resistor connection body. The more turns it has, the longer the current transmission path is and the greater the resistance generated is. The spiral resistor 402 is easy to remove and replace when connected to the plug connector 401 and the plug barrel 403, and can be replaced with a suitable spiral resistor 402.

[0038] Embodiment 3

[0039] On the basis of the second embodiment, the right end of the outer conductor cylinder 1 is connected to the outer lead block 5, and the right side of the bottom end of the outer conductor cylinder 1 is connected to the plug-in column 7, the top end of the middle conductive electrode 2 is connected to the rotation fixing assembly 8, and the rotation fixing assembly 8 includes a rotation connection column 801, an insulating plate 802 and a positioning rod 803, the outer part of the rotation connection column 801 is provided with an insulating plate 802, and the top end of the insulating plate 802 is connected to the positioning rod 803, the top end of the rotation connection column 801 is provided with an internal lead assembly 6, and the internal lead assembly 6 includes a wire 601 and an internal lead block 602, and the top end of the wire 601 is connected to the internal lead block 602;

[0040] The plug connector 401 is inserted into the plug slot 3 and connected to the middle conductive electrode 2, the plug tube 403 on the other side of the spiral resistor 402 is inserted into the outside of the plug column 7 and connected to the external conductor tube 1, and the positioning rod 803 is connected to the positioning hole 404 to limit and fix the spiral adjustment component 4.

[0041] Embodiment 4

[0042] On the basis of the third embodiment, a packaging body 9 is arranged outside the outer conductor cylinder 1, and a top sealing assembly 10 is connected to the top of the outer conductor cylinder 1. The top sealing assembly 10 includes a packaging cover 1001 and an annular groove 1002, and the outer wall of the packaging cover 1001 is provided with an annular groove 1002;

[0043] The external packaging body 9 is tightly engaged with the packaging cover 1001 and connected to the plastic packaging at the ring groove 1002 to improve the sealing effect.

[0044] When the utility model is used, first, the spiral resistor 402 is used as the resistor connection body. The more the number of windings, the longer the current transmission path, and the greater the resistance generated. The spiral resistor 402 is easy to remove and replace under the connection of the plug connector 401 and the plug-in tube 403. Replace the adapted spiral resistor 402, the plug connector 401 is plugged into the inside of the plug slot 3 and connected to the middle conductive electrode 2, the plug-in tube 403 on the other side of the spiral resistor 402 is plugged into the outside of the plug column 7 and connected to the external conductor tube 1, and the insulating plate 802 is rotated. The movable connection post 801 rotates to allow the positioning rod 803 to connect to the positioning hole 404 to limit and fix the plug connector 401, and then the external packaging body 9 is tightly clamped with the packaging cover 1001, and the plastic package is connected at the ring groove 1002. The non-electrical connection parts between the external conductor tube 1, the middle conductive electrode 2 and the spiral resistor 402 are filled with ceramic blocks for insulation. After the internal assembly is completed, the external lead block 5 is connected to the external conductor tube 1, and the internal lead block 602 is connected to the middle conductive electrode 2 through the wire 601, which can complete the external linear connection.

[0045] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0046] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A spiral resistor, comprising an outer conductor tube (1), wherein a middle conductor electrode (2) is arranged in the middle of the inner side of the outer conductor tube (1), characterized in that: A spiral adjustment component (4), the spiral adjustment component (4) is arranged outside the middle conductive electrode (2), a rotating fixing component (8) is arranged at the top end of the middle conductive electrode (2), and the rotating fixing component (8) stabilizes the insertion and fixing of the spiral adjustment component (4); The encapsulation body (9) is arranged on the outside of the external conductor tube (1), a top sealing component (10) is arranged on the top of the external conductor tube (1), and the encapsulation body (9) and the top sealing component (10) are matched and connected for encapsulation.

2. A spiral resistor according to claim 1, characterized in that: The middle conductive electrode (2) is provided with a plug-in slot (3) inside, and the outer side of the middle conductive electrode (2) is connected with a spiral adjustment component (4).

3. A spiral resistor according to claim 2, characterized in that: The screw adjustment component (4) comprises a plug connector (401) and a positioning hole (404), and the positioning hole (404) is provided inside the plug connector (401).

4. A spiral resistor according to claim 3, characterized in that: The spiral adjustment component (4) further comprises a spiral resistor (402) and a plug-in barrel (403); the outer side of the plug-in barrel (401) is connected to the spiral resistor (402), and the outer side of the spiral resistor (402) is connected to the plug-in barrel (403).

5. A spiral resistor according to claim 1, characterized in that: The right end of the external conductor tube (1) is connected to an external lead block (5), and the right side of the bottom end of the external conductor tube (1) is connected to a plug-in column (7).

6. A spiral resistor according to claim 1, characterized in that: The top end of the middle conductive electrode (2) is connected to a rotating fixing assembly (8), and the rotating fixing assembly (8) comprises a rotating connecting post (801), an insulating plate (802) and a positioning rod (803). The insulating plate (802) is arranged outside the rotating connecting post (801), and the top end of the insulating plate (802) is connected to the positioning rod (803).

7. A spiral resistor according to claim 6, characterized in that: An internal lead assembly (6) is arranged at the top end of the rotating connecting post (801), and the internal lead assembly (6) comprises a wire (601) and an internal lead block (602), and the top end of the wire (601) is connected to the internal lead block (602).

8. The spiral resistor according to claim 1, characterized in that: A packaging body (9) is arranged outside the external conductor tube (1), and a top sealing component (10) is connected to the top of the external conductor tube (1). The top sealing component (10) comprises a packaging cover (1001) and an annular groove (1002), and the outer wall of the packaging cover (1001) is provided with an annular groove (1002).

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