Drum spring type connector with anti-corrosion characteristic

Abstract

The drum spring type connector comprises an internal element main body and a middle core column communicated with one end of the internal element main body, the middle core column is sleeved with a plug assembly, the plug assembly comprises a connecting part and a lantern reed arranged at one end of the connecting part, and the middle core column penetrates through the connecting part and the lantern reed and then is connected with the lantern reed. A guide cap is formed at one end, an inner mold is coated outside the inner element main body and the middle core column, a plastic handle is arranged at one end of the inner mold, and a hole site for allowing the plastic handle to flow in during injection molding and curing to form a protective structure for the connecting part and the tail contact position of the middle core column is formed in one side of the connecting part. The drum spring type connector solves the problem that the conduction performance of the drum spring type connector in the prior art is reduced after the drum spring type connector is used for a long time.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment connectors, in particular to a drum spring type connector with corrosion resistance. Background Art

[0002] The specific application method of the drum spring quick-plug connector (commonly known as banana plug, hereinafter referred to as banana plug) on ​​the monitor lead line is: assemble the banana plug at the end of the lead line branch line, which is used to connect with disposable electrode sheets, chest suction balls, limb clamps and other electrodes, and transmit the bioelectric signals transmitted from the electrodes to the corresponding instruments for calculation through the banana plug drum spring, center rod and lead line branch lines, main lines and other units of this patent.

[0003] The existing banana plug is composed of a drum spring and a central column body. The drum spring is installed at a specific position of the central rod of the main body. The drum spring is responsible for contacting the outside world to obtain or transmit signals to the outside, and transmits the signal to the central rod through the front and rear parts that contact the central rod. The central rod then transmits the signal to other parts or devices. However, the current drum spring and the central rod are all in contact outside the plastic handle.

[0004] During clinical use, medical devices must be disinfected regularly with alcohol and other chemicals to avoid cross-infection of microorganisms such as viruses or bacteria. During disinfection, alcohol will inevitably penetrate between the center rod body and the drum spring, and because disinfectants such as alcohol are highly corrosive, and after frequent use of the product, the anti-oxidation layer between the drum spring and the center rod will inevitably be damaged to varying degrees, alcohol will accelerate the oxidation of the center rod body and the drum spring, and form an oxide film between the center rod body and the drum spring. The conductivity of the oxide film is extremely poor, which ultimately leads to the obstruction of the electrical signal communication between the drum spring and the center rod, making the product function ineffective.

[0005] In view of this, the present technical solution proposes a drum spring connector with corrosion-resistant properties, which adopts a structure in which the drum spring connection part is extended to the inside of the plastic handle and a reserved injection molding filling hole is provided, so that after the plug is assembled by injection molding, one of the connection positions is protected, which greatly delays the oxidation process and further extends the service life. Utility Model Content

[0006] The technical solution of the utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the main purpose of the utility model is to provide a drum spring connector with corrosion resistance, aiming to solve the problem that the drum spring connector in the prior art has reduced conduction performance after long-term use.

[0007] To achieve the above object, the utility model provides a drum spring type connector with corrosion resistance, comprising an internal component body and a central core column connected to one end of the internal component body, wherein a plug assembly is sleeved on the outside of the central core column.

[0008] The plug assembly includes a connecting portion and a lantern spring sheet disposed at one end of the connecting portion. After the central core column passes through the connecting portion and the lantern spring sheet, a guide cap is formed at one end.

[0009] The internal component body and the central core column are covered with an inner mold, one end of the inner mold is provided with a plastic handle, and one side of the connecting part is provided with a hole for the plastic handle to flow in during injection molding and solidify to form a protective structure for the contact position of the connecting part and the tail of the central core column.

[0010] As a further solution of the present invention, the holes are opened at two opposite sides of the connecting portion.

[0011] As a further solution of the utility model, the hole is located directly below a surface depression of the central core column.

[0012] As a further solution of the present invention, the internal component body is a resistor connected and conductive with the central core column.

[0013] As a further solution of the utility model, a redundant movable gap is reserved between the lantern reed and the guide cap for the lantern reed to expand and contract when the lantern reed expands and contracts.

[0014] As a further solution of the utility model, the inner mold is covered with an outer mold to protect the internal components.

[0015] The beneficial effects of the utility model are as follows:

[0016] The drum spring connector with corrosion resistance proposed by the utility model has a connection part specially set at the tail of the lantern spring piece (extending the tail structure of the lantern spring piece), and a hole is opened on the connection part for the plastic handle to flow in during injection molding, so that the plastic handle can be filled in the hole after solidification (the hole is submerged in the plastic handle at this time), and an isolation structure is formed with one side, which not only realizes the conduction between the lantern spring piece and the central core column at one end, but also is not polluted or corroded from the front end. In addition, the overall structure of the product is simple, and the characteristics of corrosion resistance and high-strength connection are realized without changing the main structure too much. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model technical solution or the utility model technical solution in the prior art, the drawings required for use in the embodiments or the prior art descriptions will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model technical solution. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model product.

[0019] Figure 2 This is a schematic diagram of the preliminary disassembly of the structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the components of the plug assembly in the utility model.

[0021] Figure 4 It is a perspective schematic diagram of the plastic handle of the present invention when the connecting part is fixed through the hole.

[0022] [Main parts / assembly reference numerals]

[0023] Label name Label name 1 Internal component body 21 Connection 10 Core column 22 Hole Position 100 Guide cap 3 Internal mold 2 Plug assembly 30 Plastic handle 20 Lantern Reed 4 External mold DETAILED DESCRIPTION

[0024] as follows:

[0025] Please refer to the attached Figure 1-4 ,

[0026] The main structure includes an internal component body 1, and a central core column 10 connected to one end of the internal component body 1. A plug assembly 2 is sleeved on the outside of the central core column 10. The plug assembly 2 includes a connecting portion 21 and a lantern spring 20 arranged at one end of the connecting portion 21. After the central core column 10 passes through the connecting portion 21 and the lantern spring 20, a guide cap 100 is formed at one end. The internal component body 1 and the central core column 10 are covered with an inner mold 3 on the outside, and a plastic handle 30 is provided at one end of the inner mold 3. A hole 22 is opened on one side of the connecting portion 21 for the plastic handle 30 to flow in during injection molding, and solidified to form a protective structure for the contact position of the connecting portion 21 and the tail of the central core column 10.

[0027] Here’s how it works:

[0028] By extending the lantern reed 20 (extending its connection part 21) so that it is covered by the plastic handle 30 as much as possible, during cleaning and disinfection, corrosive liquids cannot enter the plastic handle 30, achieving physical isolation (including air) between one of the contacts and the disinfectant, making oxidation lose the necessary conditions for reaction, and completely avoiding the possibility of oxidation of the central column 10 and the connection part 21 (contact) under the plastic handle 30 (even if the contact close to the guide cap 100 is oxidized, the electrical signal can be transmitted through the contact under the plastic handle 30, fully ensuring the reliability of signal transmission). When the plastic handle 30 is injection molded, the liquid plastic flows into the connection part 21 through the hole 22, and because the inner wall on one side of the connection part 21 is in close contact with the central column 10, after solidification, a barrier structure surrounding the concave part of the central column 10 is formed, which not only has the characteristics of strengthening the connection, but also blocks the entry of corrosive liquids.

[0029] In a preferred embodiment of the present invention, the holes 22 are provided at two opposite sides of the connecting portion 21 .

[0030] The holes 22 opened on the two opposite sides help to quickly form a surrounding plastic solid to achieve the best possible barrier properties.

[0031] A preferred embodiment of the present invention is that the hole 22 is located directly below the surface of the central core column 10 .

[0032] The core column 10 is generally provided with a recessed position in the middle portion thereof. Therefore, the hole 22 is formed in the recessed position to help form a blocking structure (limiting structure) after solidification.

[0033] A preferred embodiment of the present invention: the internal component body 1 is a resistor connected to the central core column 10.

[0034] A preferred embodiment of the present invention is that a redundant clearance is left between the lantern reed 20 and the guide cap 100 for the lantern reed 20 to expand and contract.

[0035] If the gap is not provided, metal fatigue will easily occur in the lantern reed 20 after long-term use, thus shortening the service life.

[0036] A preferred embodiment of the present invention is as follows: the inner mold 3 is externally covered with an outer mold 4 for protecting the internal components.

[0037] The outer mold 4 has anti-slip and insulating properties, and also has the property of preventing external moisture and dust from entering the interior.

[0038] The above are only preferred embodiments of the technical solution of the utility model, and do not limit the patent scope of the technical solution of the utility model. All equivalent structural changes made by using the contents of the technical solution description and drawings of the utility model under the conception of the technical solution of the utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the technical solution of the utility model.

Claims

1. A drum spring connector with corrosion resistance, characterized in that: include An internal component body, and a central core column connected to one end of the internal component body, wherein a plug assembly is sleeved on the outside of the central core column, The plug assembly includes a connecting portion and a lantern spring sheet disposed at one end of the connecting portion. After the central core column passes through the connecting portion and the lantern spring sheet, a guide cap is formed at one end. The internal component body and the central core column are covered with an inner mold, one end of the inner mold is provided with a plastic handle, and one side of the connecting part is provided with a hole for the plastic handle to flow in during injection molding and solidify to form a protective structure for the contact position of the connecting part and the tail of the central core column.

2. The drum spring type connector with corrosion resistance according to claim 1, characterized in that: The holes are arranged at two opposite sides of the connecting portion.

3. The drum spring type connector with corrosion resistance according to claim 1, characterized in that: The hole is located directly below the surface depression of the central core column.

4. The drum spring type connector with corrosion resistance according to claim 1, characterized in that: The internal component body is a resistor connected and conducted with the central core column.

5. The drum spring type connector with corrosion resistance according to claim 1, characterized in that: A redundant movable gap is reserved between the lantern reed and the guide cap for the lantern reed to expand and contract.

6. The drum spring type connector with corrosion resistance according to claim 1, characterized in that: The inner mold is covered with an outer mold to protect the internal components.

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