Insulation protection winding resistor

Abstract

The utility model discloses an insulating protection winding resistor, which belongs to the technical field of winding resistors and comprises a resistor body, a ceramic spiral sheet is fixedly connected to the surface of the resistor body, electrode ends are fixedly connected to two ends of the resistor body, limiting components are arranged on the surfaces of the electrode ends, and clamping openings are formed in the edges of the resistor body and the ceramic spiral sheet. According to the utility model, the ceramic spiral sheet is arranged to play a role in guiding a worker to wind a resistance wire and ensure the uniformity of manually winding the resistance wire, meanwhile, the ceramic spiral sheet can increase the heat dissipation area of the resistor body and help the resistor body to dissipate heat, and the limiting component is arranged to realize the limiting function of the resistance wire; the winding resistor has the advantages that the resistance wire is prevented from being separated from the body, the winding resistor can be mounted on a circuit board under the action of the pin contact pin, the winding resistor is prevented from being attached to the circuit board, and the heat dissipation efficiency of the winding resistor is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wire-wound resistors, in particular to an insulation protection wire-wound resistor. Background Art

[0002] When processing traditional wire-wound resistors, the resistor wire needs to be wound around the resistor body. There are two winding methods: machine winding and manual winding. For large factories, the number of processing is large, so machine winding is generally used. For small factories, the number of processing is small, so manual winding is generally used to save costs.

[0003] Manual winding cannot guarantee the uniformity of the resistance wire winding, and the manually wound resistance wire is prone to falling off. In addition, the existing resistance wire is in a fit with the circuit board when installed on the circuit board. When the wound resistor is in a high-power state, the wound resistor cannot dissipate heat well and is prone to overheating and burning. Therefore, an insulating protective wound resistor is proposed to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that the existing wire-wound resistors cannot ensure uniformity due to manual winding and the existing wire-wound resistors are fitted with circuit boards and cannot dissipate heat well, and proposes an insulating protection wire-wound resistor.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An insulating protective wound resistor comprises a resistor body, a ceramic spiral sheet is fixedly connected to the surface of the resistor body, electrode ends are fixedly connected to both ends of the resistor body, a limiting component is arranged on the surface of the electrode end, and a snap-fit ​​opening is opened at the edges of the resistor body and the ceramic spiral sheet.

[0007] Preferably, the limiting assembly comprises an L-shaped limiting rod sleeved on the surface of the electrode end, the top end surface of the L-shaped limiting rod is provided with a groove, and the side wall of the groove is provided with a moving groove.

[0008] Preferably, the L-shaped limiting rod is engaged with the engaging opening, and a sliding shaft penetrating through the movable groove is arranged on the inner side of the groove.

[0009] Preferably, a pin is fixedly connected to the surface of the sliding shaft, a limiting ring is fixedly connected to the surface of the sliding shaft, and the limiting ring is fitted with the inner wall of the groove.

[0010] Preferably, a nut for limiting the L-shaped limiting rod is threadedly connected to the surface of the electrode end.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model is provided with a ceramic spiral piece, which can guide the staff to wind the resistance wire and ensure the uniformity of the manually wound resistance wire. At the same time, the ceramic spiral piece can increase the heat dissipation area of ​​the resistor body and help the resistor body to dissipate heat.

[0013] 2. The utility model can realize the limiting function of the resistance wire by setting a limiting component to prevent the resistance wire from being separated from the body. At the same time, under the action of the pin, the function of installing the wire-wound resistor on the circuit board is realized, and the wire-wound resistor is prevented from being attached to the circuit board, thereby further ensuring the heat dissipation efficiency of the wire-wound resistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional structure diagram of an insulation protection wire-wound resistor proposed in the utility model Figure 1 ;

[0015] Figure 2 A three-dimensional structure diagram of an insulation protection wire-wound resistor proposed in the utility model Figure 2 ;

[0016] Figure 3 A three-dimensional structure diagram of an insulation protection wire-wound resistor proposed in the utility model Figure 3 ;

[0017] Figure 4 This is a schematic diagram of the assembly structure of an insulation protection wirewound resistor proposed by the utility model;

[0018] Figure 5 for Figure 4 The enlarged structural diagram at A in the middle;

[0019] Figure 6 The utility model provides a schematic structural diagram of a resistor body in an insulation protection wirewound resistor.

[0020] In the figure: 1. resistor body; 2. electrode end; 3. nut; 4. L-shaped limit rod; 401. groove; 402. moving groove; 5. ceramic spiral piece; 6. pin pin; 7. snap-fit ​​mouth; 8. limit ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1-6 An insulating protective wound resistor includes a resistor body 1, and a ceramic spiral piece 5 is fixedly connected to the surface of the resistor body 1, which can guide the staff when winding the resistor wire and ensure the uniformity of the manually wound resistor wire. At the same time, the ceramic spiral piece 5 can increase the heat dissipation area of ​​the resistor body 1 and help the resistor body 1 dissipate heat.

[0023] The two ends of the resistor body 1 are fixedly connected with the electrode end 2, and a limiting assembly is arranged on the surface of the electrode end 2. A snap-fitting opening 7 is provided at the edges of the resistor body 1 and the ceramic spiral sheet 5. The limiting assembly includes an L-shaped limiting rod 4 sleeved on the surface of the electrode end 2, and a groove 401 is provided on the top end surface of the L-shaped limiting rod 4. A moving groove 402 is provided on the side wall of the groove 401. The L-shaped limiting rod 4 is snapped with the snap-fitting opening 7. A sliding shaft penetrating the moving groove 402 is provided on the inner side of the groove 401. A pin pin 6 is fixedly connected to the surface of the sliding shaft. A limiting ring 8 is fixedly connected to the surface of the sliding shaft, and the limiting ring 8 is fitted with the inner wall of the groove 401.

[0024] It should be noted that: the L-shaped limit rod 4 is engaged with the engagement opening 7, which can block the resistance wire and prevent the resistance wire from detaching from the resistor body 1. By rotating the pin pin 6, the pin pin 6 can be used to achieve the function of installing the wire-wound resistor on the circuit board, while preventing the wire-wound resistor from fitting onto the circuit board, further ensuring the heat dissipation efficiency of the wire-wound resistor.

[0025] The surface of the electrode end 2 is threadedly connected with a nut 3 which serves to limit the L-shaped limiting rod 4 .

[0026] It should be noted that: by rotating the nut 3, the L-shaped limiting rod 4 is tightly mounted on the electrode end 2, thereby ensuring the stability of the L-shaped limiting rod 4 limiting the resistance wire.

[0027] When the utility model is used, when the wire-wound resistor is winding, the worker can wind the resistance wire on the resistor body 1 along the ceramic spiral sheet 5 to ensure the uniformity of the winding, thereby ensuring the processing quality of the wire-wound resistor;

[0028] By sleeve-arranging the L-shaped limiting rod 4 on the electrode end 2 and engaging the L-shaped limiting rod 4 with the engaging opening 7, the limiting function of the resistance wire can be realized to prevent the resistance wire from falling off, and then the nut 3 is twisted to realize the installation function of the L-shaped limiting rod 4;

[0029] When installing the wire-wound resistor, the pin pin 6 is rotated to be in a vertical state. Under the action of the pin pin 6, the function of installing the wire-wound resistor on the circuit board is realized (with the cooperation of the sliding shaft and the movable slot 402, the position of the pin pin 6 can be changed to improve the installation flexibility), and at the same time, the wire-wound resistor is prevented from being attached to the circuit board, thereby further ensuring the heat dissipation efficiency of the wire-wound resistor.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An insulating protective wirewound resistor, comprising a resistor body (1), characterized in that: A ceramic spiral piece (5) is fixedly connected to the surface of the resistor body (1), electrode ends (2) are fixedly connected to both ends of the resistor body (1), a limit assembly is provided on the surface of the electrode end (2), and snap-fit ​​openings (7) are provided at the edges of the resistor body (1) and the ceramic spiral piece (5).

2. The insulating protective wirewound resistor according to claim 1, characterized in that: The limiting assembly comprises an L-shaped limiting rod (4) sleeved on the surface of the electrode end (2), the top end surface of the L-shaped limiting rod (4) is provided with a groove (401), and the side wall of the groove (401) is provided with a moving groove (402).

3. The insulation protection wirewound resistor according to claim 2, characterized in that: The L-shaped limiting rod (4) is engaged with the engaging opening (7), and a sliding shaft penetrating through the movable groove (402) is provided on the inner side of the groove (401).

4. The insulating protective wirewound resistor according to claim 3, characterized in that: A pin plug (6) is fixedly connected to the surface of the sliding shaft, and a limit ring (8) is fixedly connected to the surface of the sliding shaft, and the limit ring (8) is in contact with the inner wall of the groove (401).

5. The insulating protective wirewound resistor according to claim 1, characterized in that: The surface of the electrode end (2) is threadedly connected with a nut (3) which serves to limit the L-shaped limiting rod (4).

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