Low thermal potential banana plug

Abstract

The utility model relates to the field of electric appliance connector, especially a low thermal potential banana plug, including plug body, output signal line, rubber core rod, shell, inner shell, plug body adopts low thermal potential material quality integrated molding and is provided with cross groove, output signal line is connected with shell, and inner shell is equipped with the fixed screw for fixing output signal line, this fixed screw sets up along the inner shell radial and is equipped with antiskid line at the end, the cross groove of plug body middle inlay is equipped with silica gel core rod, and the appearance of plug body is special-shaped structure. The utility model has low thermal potential signal transmission performance and high connection stability, improves detection precision, and is flexible and good to use.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors, and in particular to a low thermoelectric potential banana plug. Background Technology

[0002] In the field of electrical connectors, banana plugs are common connecting components widely used in signal transmission and power connection of various electronic devices. Traditional banana plugs mainly adopt two structural designs: one is to achieve mating contact with the female end through a split beryllium copper spring, and the other is to use brass material with a cross groove, utilizing the elasticity of the material itself to complete the contact.

[0003] However, both of these traditional structures have significant drawbacks: for the split beryllium copper spring structure, the contact surfaces between the spring and the plug body, and between the spring and the female end, are made of different materials. The contact between these different materials easily generates thermoelectric potential, affecting signal transmission accuracy. For the brass integral cross-groove structure, the high resistivity of brass itself also leads to a higher thermoelectric potential. These drawbacks mean that traditional banana plugs can only meet the needs of everyday low-precision applications and are unsuitable for fields requiring extremely high measurement accuracy, such as resistance, temperature, current, and thermocouples. Therefore, this invention provides a low thermoelectric potential banana plug. Utility Model Content

[0004] In response to the above situation, this utility model proposes a low thermoelectric potential banana plug with low thermoelectric potential signal transmission performance, which improves detection accuracy and is flexible and easy to use.

[0005] A low-thermal-potential banana plug includes a plug body, an output signal line, a rubber core, an outer shell, and an inner shell. The plug body is integrally molded from a low-thermal-potential material. A cross-shaped groove is formed on the plug body, and a slot is formed in the middle of the cross-shaped groove. The rubber core is embedded in the slot. The inner shell has a fixing screw 1 and a fixing screw 2 for fixing the output signal line. The plug body has an irregular shape. The output signal line passes through the inner shell and is fixedly connected to the inner shell by the fixing screw 2. The output signal line extends to the tail of the plug body and is fixedly connected to the inner shell by the fixing screw 1. The plug body and the inner shell are adapted to each other. The outer shell covers the outside of the inner shell.

[0006] Furthermore, the length of the plug body is 13-16mm, and the depth of the cross groove is 24-26mm;

[0007] Furthermore, the rubber core rod is made of silicone rubber;

[0008] Furthermore, the irregular structure of the plug body is that the outer circular surface of the plug body insertion end is arc-shaped protrusion;

[0009] Furthermore, the adapter connection is a precise fit between the irregular structure of the plug body and the internal contour of the inner shell, forming a constraint through geometric contact;

[0010] Furthermore, the ends of the first fixing screw and the second fixing screw are provided with anti-slip textures.

[0011] Compared with the prior art, the significant advantages of this utility model are:

[0012] (1) Excellent low thermoelectric potential performance. This utility model reduces the generation of thermoelectric potential from both material and structure aspects by selecting low resistivity and low thermoelectric potential material, adopting an integrated molding structure and optimizing the contact area, which can meet the application requirements of high-precision measurement fields such as resistance, temperature, current and thermocouples.

[0013] (2) High connection stability. The elasticity of the rubber core rod used in this utility model ensures that the plug and the female end are in close contact. The irregular structure increases the contact area. The fixing screw prevents the signal line from loosening. Multiple designs work together to ensure connection stability and avoid signal transmission interruption or distortion. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0015] Figure 1 This is a front view based on the present invention;

[0016] Figure 2 This is a cross-sectional view based on the present invention;

[0017] Figure 3 This is a schematic diagram of the plug body structure according to the present utility model;

[0018] Figure 4 This is a cross-sectional view of the plug body structure according to this utility model;

[0019] Figure label:

[0020] 1. Rubber core rod; 2. Plug body; 3. Outer shell; 4. Fixing screw one; 5. Fixing screw two; 6. Inner shell; 7. Output signal line; 8. Cross groove. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] like Figure 1-3As shown, a low thermoelectric potential banana plug includes a plug body 2, an output signal line 7, a rubber core 1, an outer shell 3, and an inner shell 6. The plug body 2 is integrally molded from a low thermoelectric potential material. A cross groove 8 is formed on the plug body 2, and a groove is formed in the middle of the cross groove 8. The rubber core 1 is embedded in the groove. The inner shell 6 is provided with a fixing screw 4 and a fixing screw 5 for fixing the output signal line 7. The plug body 2 has an irregular shape. The output signal line 7 passes through the inner shell 6 and is fixedly connected to the inner shell 6 by the fixing screw 5. The output signal line 7 extends to the tail of the plug body 2 and is fixedly connected to the inner shell 6 by the fixing screw 4. The plug body 2 and the inner shell 6 are adapted to each other. The outer shell 3 is wrapped around the outside of the inner shell 6.

[0023] Specifically, a low-thermal-potential banana plug includes a plug body 2, an output signal line 7, a rubber core 1, a shell 3, and an inner shell 6. The plug body 2 is integrally molded from a low-thermal-potential material and has a cross-shaped groove 8. This low-thermal-potential material is a metal material with low resistivity, which can meet the requirements for voltage measurement with a resolution of microvolts or below. The output signal line 7 is connected to the inner shell 6. The inner shell 6 has a fixing screw 4 and a fixing screw 5 for fixing the output signal line. The fixing screw 4 and the fixing screw 5 are perpendicular to each other and have anti-slip textures at their ends. By pressing against the output signal line 7, the fixing effect is enhanced to prevent slippage. Loosening; A rubber core 1 is embedded in the cross groove 8 of the plug body 2. The rubber core 1 is made of silicone rubber, which has the characteristics of high temperature resistance, corrosion resistance and high resilience. It can provide a rebound force when the plug body 2 is inserted into the female end, so that the outer circle of the plug body 2 keeps in close contact with the inner hole of the female end; The plug body 2 has an irregular shape structure. Specifically, the outer circle surface of the plug body 2 insertion end is arc-shaped and protrudes to increase the contact area with the inner hole of the female end. At the same time, the length of the plug body 2 and the depth of the cross groove 8 are set to allow the plug body 2 to have sufficient elastic deformation distance, ensuring that it does not undergo permanent deformation after elastic deformation and has a high continuous service life.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A low thermoelectric potential banana plug, characterized in that, The device includes a plug body, an output signal line, a rubber core, an outer shell, and an inner shell. The plug body is integrally molded from a low thermoelectric potential material. A cross-shaped groove is formed on the plug body, and a slot is formed in the middle of the cross-shaped groove. The rubber core is embedded in the slot. The inner shell has a fixing screw 1 and a fixing screw 2 for fixing the output signal line. The plug body has an irregular shape. The output signal line passes through the inner shell and is fixedly connected to the inner shell by the fixing screw 2. The output signal line extends to the tail of the plug body and is fixedly connected to the inner shell by the fixing screw 1. The plug body and the inner shell are adapted to each other. The outer shell covers the outside of the inner shell.

2. The low thermoelectric potential banana plug according to claim 1, characterized in that, The length of the plug body is 13-16mm, and the depth of the cross groove is 24-26mm.

3. A low thermoelectric potential banana plug according to claim 1, characterized in that, The rubber core rod is made of silicone rubber.

4. A low thermoelectric potential banana plug according to claim 1, characterized in that, Specifically, the irregular structure of the plug body is that the outer circular surface of the insertion end of the plug body has an arc-shaped protrusion.

5. A low thermoelectric potential banana plug according to claim 1, characterized in that, The adapter connection is a precise fit between the irregular structure of the plug body and the internal contour of the inner shell, forming a constraint through geometric contact.

6. A low thermoelectric potential banana plug according to claim 1, characterized in that, The ends of the first fixing screw and the second fixing screw are provided with anti-slip texture.

Images