An adjustable strap resistor for ease of installation

Abstract

The present application relates to the technical field of resistance, in particular to a kind of adjustable and easy-to-install band resistor, including string pole, multiple limit rings and multiple resistance bands, limit ring is sleeved in string pole outside, the two ends of each resistance band are respectively clamped by different adjacent two limit rings, limit ring is mutually electrically conducted with the end portion of clamped resistance band;It also includes the first driving member of driving string pole axial movement and the second driving member of driving string pole rotation;The outside of string pole is equipped with multiple clamping protrusions, and the end portion of each resistance band is equipped with clamping slot;The first driving member drives string pole axial movement, to make multiple clamping protrusions of string pole and odd order resistance band be peripherally clamped, and switch to and even order resistance band is peripherally clamped;The second driving member drives string pole rotation preset angle, to make odd order resistance band and even order resistance band be staggered arrangement, or drive the resistance band that is clamped continues rotation.Compared with prior art, it is easy to adjust and easy to install.

Description

Technical Field

[0001] This invention relates to the field of resistor technology, and more specifically to an adjustable and easy-to-install strip resistor. Background Technology

[0002] Currently, there are various forms of tape resistors, most of which have overly complex structures and require cumbersome production and assembly methods. Existing tape resistors include resistance tapes with continuous bends and turns. Each bend in the resistance tape is welded with a support, and then the supports are connected in series with screws. The screws are insulated from the supports by being coated with mica. The manufacturing process is complex and the overall cost is high.

[0003] Furthermore, existing strip resistors generally require additional fans for forced air cooling, resulting in a larger size. In existing strip resistors, the distance between adjacent resistor segments remains constant. Under high-power, long-term use, adjacent resistor segments are prone to electromagnetic attraction, especially in areas without intermediate support. Summary of the Invention

[0004] In view of the above-mentioned technical problems, the present invention provides an adjustable and easy-to-install strip resistor.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An adjustable and easy-to-install strip resistor is provided, including a connecting rod, multiple limiting rings and multiple resistance strips. The limiting rings are sleeved on the connecting rod and are insulated from each other. Each resistance strip is C-shaped and its two ends are clamped by two different adjacent limiting rings. The limiting rings make the ends of the clamped resistance strips electrically connected to each other. It also includes a first driving component that drives the axial movement of the connecting rod and a second driving component that drives the axial rotation of the connecting rod; the outer side of the connecting rod is provided with multiple locking protrusions, and the ends of each resistor strip are provided with locking grooves; The first driving element drives the string rod to move axially so that the multiple locking protrusions of the string rod are circumferentially locked with the resistor strips of odd order, and switch to being circumferentially locked with the resistor strips of even order. The second driving component drives the connecting rod to rotate by a preset angle so that the odd-numbered resistor strips are staggered with the even-numbered resistor strips, or drives the clamped resistor strip to rotate continuously.

[0006] Specifically, a gear is fitted on the outer side of the rod, and the end of the resistance band has a U-shaped groove that meshes with the gear. The center of the gear has a positioning groove, and the axial movement of the rod allows its locking protrusion to engage or disengage with the positioning groove.

[0007] Specifically, the sides of the resistor strip are integrally molded with flanges.

[0008] Specifically, the limiting rings at the ends of the clamped resistor strips are all conductive rings, thus enabling multiple resistor strips to be connected in parallel.

[0009] Specifically, the limiting rings at the ends of the clamped resistor strips are arranged with alternating conductive and insulating rings, thereby connecting multiple resistor strips in series.

[0010] Specifically, the thickness of the resistor band is uniform along its length.

[0011] Specifically, the thickness of the resistor band gradually increases towards the center.

[0012] Specifically, the resistor band can bend and deform elastically.

[0013] Specifically, the rod is a metal rod covered with an insulating layer.

[0014] Specifically, the rods are insulated mica rods.

[0015] The beneficial effects of this invention are: This invention discloses an adjustable and easy-to-install strip resistor. During transportation, the resistor strips can be arranged in concentric circles, resulting in a compact overall structure that occupies little space and is easy to package and transport. In use, a connecting rod can rotate the resistor strips in odd or even order by a preset angle, causing adjacent strips to be misaligned. The distance between the midpoints of adjacent strips after rotation is doubled, preventing adhesion under high current conditions. Alternatively, the connecting rod can continuously rotate a portion of the resistor strips to accelerate heat exchange and dissipation with the air. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an adjustable and easy-to-install strip resistor in one of the embodiments.

[0018] Figure 2 The images show an exploded view and a partially enlarged view of an adjustable and easy-to-install strip resistor as described in the embodiment.

[0019] Figure 3 This is a schematic diagram of the engagement between the resistor strip and the connecting rod in the embodiment, where the connecting rod is shown in a simplified diagram.

[0020] Figure 4 This is a schematic diagram of the structure of a single resistor strip in the embodiment.

[0021] Figure 5This is a schematic diagram of another state of an adjustable and easy-to-install ribbon resistor in one of the embodiments.

[0022] Figure label: String rod 1, locking protrusion 11; Limiting ring 2; Resistor 3, Slot 31, Flanged edge 32; First drive component 4, second drive component 5; Gear 6, positioning groove 61. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0024] This embodiment provides an adjustable and easy-to-install strip resistor, such as... Figures 1 to 5 As shown, the device includes a connecting rod 1, multiple limiting rings 2, and multiple resistance bands 3. The limiting rings 2 are fitted over the connecting rod 1, and the connecting rod 1 and the limiting rings 2 are insulated from each other. Along the length of the connecting rod 1, there are two sets of resistance bands 3, with five bands in each set. In practice, the number of sets and the number of resistance bands 3 in each set can be adjusted as needed. The following explanation uses one set as an example.

[0025] Each resistor strip 3 is C-shaped, and the two ends of each resistor strip 3 are respectively clamped by two adjacent limiting rings 2. The limiting rings 2 make the ends of the clamped resistor strip 3 electrically connected to each other.

[0026] It also includes a first driving member 4 for axial movement of the connecting rod 1 and a second driving member 5 for rotation of the connecting rod 1. The first driving member 4 can be a conventional linear drive device such as a cylinder, hydraulic cylinder, or linear module, and the second driving member 5 can be a motor. The outer side of the connecting rod 1 has multiple locking protrusions 11, and the ends of each resistor strip 3 have locking grooves 31. The first driving member 4 drives the connecting rod 1 to move axially, so that the multiple locking protrusions 11 of the connecting rod 1 are circumferentially locked with the resistor strips 3 of odd order, and switches to circumferentially locked with the resistor strips 3 of even order. The second driving member 5 drives the connecting rod 1 to rotate by a preset angle, so that the resistor strips 3 of odd order are staggered from the resistor strips 3 of even order, such as... Figure 5 As shown in the diagram, the distance between adjacent resistor bands 3, except for the middle segments at both ends, is twice the original distance. In practice, this could also be achieved by continuously rotating the clamped resistor band 3 to accelerate heat exchange with the air and improve heat dissipation efficiency.

[0027] That is, rod 1 will not simultaneously drive all resistors 3 in the same group to rotate, but only some of them. (See also...) Figure 3As shown in the diagram, the locking protrusion 11 of the connecting rod 1 engages with the three resistor bands 3 in odd-numbered order, while the two resistor bands 3 in even-numbered order do not engage. When the connecting rod 1 rotates, it drives the three resistor bands 3 in odd-numbered order to rotate, while the two resistor bands 3 in even-numbered order do not rotate. When it is necessary to switch to engaging the resistor bands 3 in even-numbered order, the connecting rod 1 moves axially a preset distance, and the locking protrusion 11 switches.

[0028] In this embodiment, the engagement of the connecting rod 1 and the resistor strip 3 is achieved indirectly as follows: a gear 6 is sleeved on the outer side of the connecting rod 1, and the end groove 31 of the resistor strip 3 is U-shaped. The gear 6 meshes with the groove 31, and the rotation of the gear 6 drives the resistor strip 3 to rotate. The center of the gear 6 is provided with a positioning groove 61. The axial movement of the connecting rod 1 can cause its locking protrusion 11 to be inserted into or disengaged from the positioning groove 61, thereby achieving circumferential engagement or disengagement.

[0029] Specifically, the side of the resistor strip 3 is integrally formed with a flange 32 so that when the resistor strip 3 rotates continuously, it disturbs the surrounding air and provides cooling for the non-rotating resistor strip 3.

[0030] Specifically, the limiting rings 2 at the ends of the clamped resistor strips are all conductive rings, which allows multiple resistor strips 3 to be connected in parallel. That is, among the five resistor strips 3 in the same group, one end is completely connected to the other, and the other end is also completely connected to the other.

[0031] Specifically, the limiting ring 2 at the end of the clamped resistor strip is an alternating arrangement of conductive rings and insulating rings, thereby connecting multiple resistor strips 3 in series. That is, among the five resistor strips 3 in the same group, one end is alternately conductive, and the other end is also alternately conductive, thus achieving series connection.

[0032] Specifically, the thickness of resistor strip 3 is uniform along its length. Alternatively, the thickness of resistor strip 3 can be changed to gradually increase towards the center to enhance the strength in the middle and reduce deformation.

[0033] Specifically, resistor band 3 can be flexibly bent and deformed, making it easy to assemble.

[0034] Specifically, rod 1 is a metal rod covered with an insulating layer. Alternatively, rod 1 can be described as an insulated mica rod.

[0035] In the description of this invention, it is obvious that the described embodiments are merely a part of the embodiments of the invention, and not all of them. The components of the embodiments of the invention described and illustrated herein can generally be arranged and designed in various different configurations.

[0036] Therefore, the above detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] In the description of this invention, it should be noted that the terms "middle," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. An adjustable and easy-to-install strip resistor, characterized in that: It includes a string rod (1), multiple limiting rings (2) and multiple resistance strips (3). The limiting rings (2) are sleeved on the string rod (1). The string rod (1) and the limiting rings (2) are insulated from each other. Each resistance strip (3) is C-shaped. The two ends of each resistance strip (3) are clamped by two different adjacent limiting rings (2). The limiting rings (2) make the ends of the clamped resistance strips (3) electrically connected to each other. It also includes a first driving member (4) for axial movement of the string rod (1) and a second driving member (5) for rotation of the string rod (1); the outer side of the string rod (1) is provided with multiple locking protrusions (11), and the end of each resistor strip (3) is provided with a locking groove (31). The first driving member (4) drives the string rod (1) to move axially so that the multiple locking protrusions (11) of the string rod (1) are circumferentially locked with the resistor strips (3) of the odd order, and switch to being circumferentially locked with the resistor strips (3) of the even order. The second driving component (5) drives the string rod (1) to rotate at a preset angle so that the resistor strips (3) in odd order are staggered with the resistor strips (3) in even order, or drives the clamped resistor strips (3) to rotate continuously.

2. The adjustable and easy-to-install strip resistor according to claim 1, characterized in that: A gear (6) is fitted on the outside of the rod (1), and the end slot (31) of the resistor strip (3) is U-shaped. The gear (6) meshes with the slot (31). The center of the gear (6) is provided with a positioning groove (61). The axial movement of the rod (1) can make its locking protrusion (11) engage or disengage with the positioning groove (61).

3. The adjustable and easy-to-install strip resistor according to claim 1, characterized in that: The side of the resistor strip (3) is integrally formed with a flange (32).

4. An adjustable and easy-to-install strip resistor according to claim 1, characterized in that: The limiting rings (2) at the ends of the clamped resistor strips are all conductive rings, so that multiple resistor strips (3) are connected in parallel.

5. An adjustable and easy-to-install strip resistor according to claim 1, characterized in that: The limiting ring (2) at the end of the clamped resistor strip is composed of alternating conductive and insulating rings, thereby connecting multiple resistor strips (3) in series.

6. An adjustable and easy-to-install strip resistor according to claim 1, characterized in that: The thickness of the resistance band (3) is uniform along its length.

7. An adjustable and easy-to-install strip resistor according to claim 1, characterized in that: The thickness of the resistance band (3) gradually increases toward the center.

8. An adjustable and easy-to-install strip resistor according to claim 1, characterized in that: The resistance band (3) is capable of elastic bending and deformation.

9. An adjustable and easy-to-install strip resistor according to claim 1, characterized in that: The rod (1) is a metal rod, and the outer surface of the metal rod is covered with an insulating layer.

10. An adjustable and easy-to-install strip resistor according to claim 1, characterized in that: The string rod (1) is an insulated mica rod.

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