Column type large-creepage zero-loss depth current limiting device

Abstract

The utility model relates to the technical field of current limiting resistors, and discloses a column-type large-creepage zero-loss depth current limiting device, which comprises a rectangular frame, mounting holes are formed in the center of the top side and the center of the bottom side of the rectangular frame, and joints are fixedly connected to the inner walls of the two mounting holes. The two connectors are electrically connected with an external power source in a threaded mode, and insulating limiting plates are fixedly connected to the inner wall of the top side and the inner wall of the bottom side of the rectangular frame. When the two contacts are moved to be in contact with the two connectors, the four resistance wires with different resistance values can meet different current limiting requirements, compared with the mode that the current limiting requirements are met by replacing the resistance wires, the operation convenience can be effectively improved, meanwhile, time waste can be avoided to a certain extent, and the operation efficiency is improved. And popularization and use are facilitated.

Description

Technical Field

[0001] This application relates to the technical field of current-limiting resistors, and in particular, to a columnar large creepage zero-loss deep current-limiting device. Background Art

[0002] A current-limiting resistor is connected in series in a circuit to limit the magnitude of the current in the branch where it is located, so as to prevent the components connected in series from being burned out due to excessive current. At the same time, the current-limiting resistor can also play a voltage-dividing role.

[0003] However, in actual applications, most of the existing current-limiting devices usually use the method of replacing different resistance wires to achieve current-limiting effects during use. However, the replacement of resistance wires is relatively cumbersome, which will cause a waste of time and is not conducive to popularization and use.

[0004] Therefore, those skilled in the art have provided a columnar large creepage zero-loss deep current-limiting device to solve the problems raised in the above background art. Utility Model Content

[0005] In order to solve the problem that the replacement of resistance wires is relatively cumbersome in the above background art, which will cause a waste of time and is not conducive to popularization and use, this application provides a columnar large creepage zero-loss deep current-limiting device.

[0006] A columnar large creepage zero-loss deep current-limiting device provided by this application adopts the following technical solution: It includes a rectangular frame. Installation holes are provided at the center of the top side and the center of the bottom side of the rectangular frame. The inner walls of the two installation holes are fixedly connected with connectors, and both connectors are threadedly and electrically connected to an external power supply. The inner walls of the top side and the bottom side of the rectangular frame are fixedly connected with insulating limit plates. A plurality of contact heads are slidably connected to the outer sides of the two insulating limit plates. The plurality of contact heads are symmetrically arranged in pairs up and down, and the opposite sides of multiple groups of contact heads are electrically connected with resistance wires of different resistance values respectively.

[0007] Preferably, the edges of the opposite sides of the two connectors are designed with rounded corners.

[0008] Preferably, the front and rear of the plurality of contact heads are fixedly connected with dial rods, and the plurality of dial rods are symmetrically distributed in pairs.

[0009] Preferably, insulating covers are adaptively installed on the front and rear sides of the rectangular frame. Annular grooves are provided on the opposite sides of the two insulating covers. Iron sheets are fixedly installed on the inner walls of the annular grooves. Magnetic rings are fixedly connected to the front and rear sides of the rectangular frame.

[0010] In summary, this application includes the following beneficial technical effects:

[0011] 1. By setting up a resistance wire, on the premise of power-off, according to the requirement of current limiting, manually move the contact corresponding to the resistance value until the two contacts are respectively moved to contact with the two connectors. At this time, four resistance wires with different resistance values can meet different current limiting requirements. Compared with the method of replacing the resistance wire to meet the current limiting requirement, the convenience of operation can be effectively improved in this case. At the same time, time waste can be avoided to a certain extent, which is conducive to popularization and use.

[0012] 2. By designing the relative edges of both sides of the two connectors to be chamfered, the movement of the connectors in position can be facilitated, and the interference of movement caused by misalignment when the two are in contact can be avoided, effectively improving the convenience of operation. Description of the Drawings

[0013] Figure 1 is a schematic diagram of the external structure of a columnar large creepage zero-loss deep current limiting device in an embodiment of the present application;

[0014] Figure 2 is a schematic diagram of the internal connection structure of a columnar large creepage zero-loss deep current limiting device in an embodiment of the present application;

[0015] Figure 3 is a schematic diagram of a partial sectional structure of a columnar large creepage zero-loss deep current limiting device in an embodiment of the present application.

[0016] Description of the reference numerals: 1, rectangular frame; 2, connector; 3, insulating limiting plate; 4, contact; 5, resistance wire; 6, lever; 7, insulating cover; 8, magnetic ring. Detailed Embodiment

[0017] The following will combine the attached Figures 1 - 3 The technical solutions of the present utility model will be described clearly and completely. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] The embodiment of the present application discloses a columnar large creepage zero-loss deep current limiting device. Refer to Figures 1 - 3, including a rectangular frame 1. Installation holes are provided at the center of the top side and the center of the bottom side of the rectangular frame 1. The inner walls of the two installation holes are fixedly connected with connectors 2. Both of the two connectors 2 are threadedly and electrically connected to an external power supply. The inner walls of the top side and the bottom side of the rectangular frame 1 are fixedly connected with insulating limit plates 3. The outer sides of the two insulating limit plates 3 are each slidably connected with a plurality of contact heads 4. The plurality of contact heads 4 are symmetrically arranged in the up-and-down direction in groups, and the opposite sides of multiple groups of contact heads 4 are respectively electrically connected to resistance wires 5 with different resistance values. By setting the resistance wires 5, on the premise of power failure, according to the current-limiting requirements, manually move the contact heads 4 with corresponding resistance values until the two contact heads 4 are respectively moved into contact with the two connectors 2. At this time, the four resistance wires 5 with different resistance values can meet different current-limiting requirements. Compared with the method of replacing the resistance wires 5 to meet the current-limiting requirements, the convenience of operation can be effectively improved in this case, and at the same time, time waste can be avoided to a certain extent, which is beneficial to popularization and use.

[0019] In this application, the edges of the opposite sides of the two connectors 2 are both designed with rounded corners. By setting the edges of the opposite sides of the two connectors 2 to be both designed with rounded corners, the movement of the connector 2 in position can be facilitated, and the interference of movement caused by misalignment when the two come into contact can be avoided, effectively improving the convenience of operation.

[0020] In this application, the front and rear of each of the plurality of contact heads 4 are fixedly connected with a lever 6, and the plurality of levers 6 are symmetrically distributed in pairs. By setting the levers 6, the convenience of movement can be improved when moving the contact heads 4 by using the levers 6.

[0021] In this application, insulating covers 7 are adaptively installed on the front and rear sides of the rectangular frame 1. Annular grooves are provided on the opposite sides of the two insulating covers 7, and iron sheets are fixedly installed on the inner walls of the annular grooves. Magnetic rings 8 are fixedly connected to the front and rear sides of the rectangular frame 1. By setting the insulating covers 7, the two insulating covers 7 cooperate with each other to form a sealed environment for the rectangular frame 1, thereby improving the stability during use. At the same time, when the insulating covers 7 are attached to the rectangular frame 1, the magnetic rings 8 and the iron sheets on the inner walls of the annular grooves attract each other magnetically, thereby preventing the insulating covers 7 from falling off during use.

[0022] The standard parts used in this utility model can all be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0023] The implementation principle of a column-type large creepage zero-loss depth current limiting device in an embodiment of the present application is as follows: When in use, on the premise of power-off, according to the current limiting requirements, manually move the contact 4 with a corresponding resistance value until the two contacts 4 are respectively moved into contact with the two connectors 2. At this time, the four resistance wires 5 with different resistance values can meet different current limiting requirements. Compared with the method of replacing the resistance wire 5 to meet the current limiting requirements, the convenience of operation can be effectively improved in this case. At the same time, time waste can be avoided to a certain extent, which is beneficial to popularization and use. The relative side edges of the two connectors 2 are both designed with rounded corners, so that the movement of the connector 2 in position can be facilitated, and the interference of movement caused by misalignment when the two are in contact can be avoided, effectively improving the convenience of operation. When moving the contact 4, the use of the lever 6 can improve the convenience of movement. The two insulating covers 7 cooperate with each other to form a sealed environment for the rectangular frame 1, thereby improving the stability during use. At the same time, when the insulating cover 7 fits with the rectangular frame 1, the magnetic ring 8 and the iron sheet on the inner wall of the annular groove attract each other magnetically, so as to prevent the insulating cover 7 from falling off during use.

[0024] Finally, the following points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components. It can be directly connected. "Upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0025] Secondly, in the drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments of the present disclosure are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

Claims

1. A columnar large creepage zero-loss depth current limiting device, comprising a rectangular frame (1), characterized in that, Installation holes are provided at the center of the top side and the center of the bottom side of the rectangular frame (1). The inner walls of the two installation holes are fixedly connected with connectors (2), and the two connectors (2) are threadedly and electrically connected to an external power supply. The inner walls of the top side and the bottom side of the rectangular frame (1) are fixedly connected with insulating limiting plates (3). A plurality of contact heads (4) are slidably connected to the outer sides of the two insulating limiting plates (3). The plurality of contact heads (4) are symmetrically arranged in the up-and-down direction as a group, and the opposite sides of multiple groups of contact heads (4) are electrically connected to resistance wires (5) with different resistance values respectively.

2. The column-type large creepage zero-loss depth current limiting device according to claim 1, characterized in that: The edges of the opposite sides of the two connectors (2) are designed with rounded corners.

3. The columnar large creepage zero-loss depth current limiting device according to claim 1, wherein: The front and rear ends of the plurality of contact heads (4) are fixedly connected with shifting rods (6), and the plurality of shifting rods (6) are symmetrically distributed in pairs.

4. A columnar large creepage zero-loss depth current limiting device according to claim 1, characterized in that: Insulating covers (7) are adaptively installed on the front and rear sides of the rectangular frame (1). Annular grooves are provided on the opposite sides of the two insulating covers (7). Iron sheets are fixedly installed on the inner walls of the annular grooves. Magnetic rings (8) are fixedly connected to the front and rear sides of the rectangular frame (1).

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