High current crown spring jack

Abstract

The present invention discloses a high-current crown spring jack, which includes an outer cylinder, an inner cylinder and a crown spring from the outside to the inside. The crown spring includes a front ring, a rear ring and a spring sheet connected between the front ring and the rear ring. The front ring and the rear ring are provided with a fracture that allows the ends to be disconnected. The spring sheets are spaced apart along the circumference of the front ring. All the spring sheets are concave toward the center line of the outer cylinder to enclose a waist-shaped structure. The inner cylinder is tightly against the crown spring, and the front ring and the rear ring are tightly against the inner side wall of the outer cylinder. The inner cylinder always has a tendency to hold the crown spring. Compared with the prior art, after the pin is inserted, the inner cylinder holds the crown spring, and the crown spring holds the pin, thereby enhancing the holding force on the pin, so that the pin is not easy to loosen, and is particularly suitable for oscillating occasions. In addition, with the help of this tendency of the inner cylinder, the plug-in life of the high-current crown spring jack of the present invention is greatly increased.

Description

Technical Field

[0001] The invention relates to the field of electric connectors, in particular to a high-current crown spring jack. Background Art

[0002] With the development of science and technology and the progress of humanities, the application of electrical connectors is increasing day by day, and the performance and technical content of electrical connectors are becoming higher and higher. In addition to meeting general performance requirements, the particularly important requirement for electrical connectors is that they must achieve good contact, reliable operation, and easy maintenance. Whether they work reliably or not directly affects the normal operation of the circuit. The crown spring jack is a jack component used on electrical connector (i.e. connector) products.

[0003] The existing crown spring jack includes a crown spring, an outer tube, and an inner tube located between the crown spring and the outer tube. The crown spring is located in the inner tube. The front end of the crown spring has a flange that is clamped to the front end of the inner tube. There is a gap between the inner tube and the spring leaf of the crown spring. This type of crown spring jack has the advantages of convenient crown spring assembly and low insertion and extraction force. However, the gap between the inner tube and the crown spring causes the crown spring to provide only the clamping force after the pin is inserted. Therefore, the clamping force of this type of crown spring jack is small, especially in the case of vibration, the pin is easily loosened and arcing occurs. In addition, this type of crown spring jack also has the defect of short insertion and extraction life.

[0004] Therefore, there is an urgent need for a high-current crown spring socket with large holding force and long plug-in life to overcome the above-mentioned defects. Summary of the invention

[0005] The object of the present invention is to provide a high-current crown spring socket with large clamping force and long plugging and unplugging life.

[0006] To achieve the above-mentioned purpose, the high-current crown spring socket of the present invention comprises an outer tube, an inner tube and a crown spring from the outside to the inside, the crown spring comprises a front end ring, a rear end ring and a spring sheet connected between the front end ring and the rear end ring, the front end ring and the rear end ring are each provided with a fracture that disconnects the ends thereof, the spring sheets are spaced apart along the circumference of the front end ring, all the spring sheets are concave toward the center line of the outer tube to enclose a waist-shaped structure, the inner tube is tightly against the crown spring, the front end ring and the rear end ring are tightly against the inner side wall of the outer tube, and the inner tube always has a tendency to tightly embrace the crown spring.

[0007] Preferably, the inner tube is provided with a disconnection opening so that the ends thereof are disconnected.

[0008] Preferably, the fracture opening and the disconnection opening are staggered.

[0009] Preferably, the front end and the rear end of the inner cylinder are annular structures with flush outer surfaces.

[0010] Preferably, the inner tube is a waist-shaped tube structure.

[0011] Preferably, the crown spring is an elastic structure with high conductivity, and the inner cylinder is an elastic structure with high yield strength.

[0012] Preferably, the front end ring includes an outward-turned first flange structure, and the rear end ring includes an outward-turned second flange structure, the first flange structure is clamped to the front end of the inner tube and contacts the inner side wall of the outer tube, and the second flange structure is clamped to the rear end of the inner tube and contacts the inner side wall of the outer tube.

[0013] Preferably, the first flanging structure is provided with a plurality of first openings arranged rearwardly, and the first openings are arranged at intervals along the circumference of the front end ring; the second flanging structure is provided with a plurality of second openings arranged forwardly, and the second openings are arranged at intervals along the circumference of the rear end ring.

[0014] Preferably, the outer cylinder comprises an outer cylinder body, and mounting holes respectively penetrating the front end surface and the rear end surface of the outer cylinder body, and the two mounting holes are not connected to each other.

[0015] Preferably, the mounting hole includes a first hole and a second hole, the diameter of the first hole is larger than that of the second hole, a step structure is formed at the intersection of the first hole and the second hole, and the inner cylinder and the crown spring are built into the first hole and supported on the step structure.

[0016] Compared with the prior art, the high-current crown spring jack of the present invention is closely attached to the crown spring by means of its inner cylinder, and the inner cylinder always has a tendency to hold the crown spring tightly. Therefore, when the pin is inserted into the crown spring, after the crown spring is stretched, the crown spring has a tendency to recover and hold the pin tightly. Since the inner cylinder has a tendency to hold the crown spring tightly, when the pin is inserted, the inner cylinder and the crown spring are deformed at the same time. After the pin comes in, the inner cylinder holds the crown spring tightly, and the crown spring holds the pin tightly, thereby enhancing the holding force on the pin, making it difficult for the pin to loosen, especially suitable for oscillating occasions; in addition, by means of this tendency of the inner cylinder, the plug-in and pull-out life of the high-current crown spring jack of the present invention is greatly increased. In addition, by means of the front end ring and the rear end ring being closely attached to the inner side wall of the outer cylinder, the crown spring and the outer cylinder are connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the top view of the structure of the high current crown spring jack of the present invention.

[0018] Figure 2 yes Figure 1 Schematic diagram of the cross-section after cutting along the AA cutting line.

[0019] Figure 3 It is a schematic structural diagram of the cooperation between the inner tube of the large current crown spring socket and the crown spring of the present invention.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the inner tube of the large current crown spring jack of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the crown spring of the high-current crown spring jack of the present invention. DETAILED DESCRIPTION

[0022] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0023] See also Figures 1 to 4 The high-current crown spring socket 100 of the present invention includes an outer tube 1, an inner tube 2 and a crown spring 3 from the outside to the inside. The crown spring 3 includes a front ring 31, a rear ring 32 and a spring leaf 33 connected between the front ring 31 and the rear ring 32. The front ring 31 and the rear ring 32 are each provided with a break 311, 321 that is set to be disconnected from the front and rear ends. With the help of the break 311, 321, the crown spring 3 is easy to deform, so that it is convenient to install it into the inner tube 2. The break 311 of the front ring 31 and the break 321 of the rear ring 32 are arranged opposite to each other, which helps to stabilize the deformation and is more convenient for installation. The spring leaf 33 is arranged at intervals along the circumference of the front ring 31, and all the spring leaves 33 are concave toward the center line of the outer tube 1 to enclose a waist-shaped structure. With the help of the waist-shaped crown spring 3, it is convenient for the pin to quickly contact the crown spring 3 after being inserted into the high-current crown spring socket 100 of the present invention, so as to quickly conduct. The front ring 31 and the rear ring 32 are in close contact with the inner wall of the outer tube 1, so that the crown spring 3 and the outer tube 1 are in conduction. The inner tube 2 is in close contact with the crown spring 3, and the inner tube 2 always has a tendency to hold the crown spring 3. With this tendency, the inner tube 2 expands and contracts with the expansion and contraction of the crown spring 3. When the pin is inserted into the high-current crown spring socket 100 of the present invention, the crown spring 3 is stretched open by the pin, thereby driving the inner tube 2 to be stretched open together. Since the inner tube 2 holds the crown spring 3, and the crown spring 3 holds the pin, the holding force on the pin is greatly increased, thereby preventing the pin from loosening in the crown spring 3 and avoiding arcing, which is particularly suitable for vibration occasions. At the same time, the increase in holding force is conducive to improving the plug-in life. Specifically, the crown spring 3 is an elastic structure with high conductivity. With the elastic structure of the crown spring 3, when the crown spring 3 is stretched, the crown spring 3 always has a tendency to hold the pin tightly, thereby holding the pin tightly. At the same time, with the crown spring 3 being a structure with high conductivity, the conduction rate between the pin and the outer tube 1 is fast; preferably, the crown spring 3 is a structure with low yield strength, which is conducive to deformation processing and manufacturing. The inner tube 2 is an elastic structure with high yield strength. With the help of this structure of the inner tube 2, it is conducive to reducing plastic deformation, thereby improving the holding force and plug-in life. For example, the material of the crown spring is copper alloy, and the material of the inner tube is stainless steel, but it is not limited to this.

[0024] More specifically, as follows:

[0025] See also Figure 4 , the inner tube 2 is a waist-shaped tube structure, so as to achieve the effect of being close to the crown spring 3. When the crown spring 3 is stretched, the inner tube 2 is also quickly stretched and has a tendency to hold the crown spring 3 tightly. The inner tube 2 is provided with a disconnection port 21 that allows the head and tail to be disconnected. With the help of the disconnection port 21 and the elastic structure of the inner tube 2, the inner tube 2 can be easily installed in the outer tube 1 and abut against the outer tube 1 after the elasticity is restored. Therefore, the high-current crown spring jack 100 of the present invention also has the advantage of quick assembly. Specifically, the disconnection ports 311 and 321 are staggered with the disconnection port 21. Of course, in other embodiments, the disconnection ports 311 and 321 are opposite to the disconnection port 21, but this is not limited to this.

[0026] See also Figure 5 The front ring 31 includes an outward-turned first flange structure 312, and the rear ring 32 includes an outward-turned second flange structure 322. The first flange structure 312 is clamped at the front end of the inner tube 2 and contacts the inner side wall of the outer tube 1, and the second flange structure 322 is clamped at the rear end of the inner tube 2 and contacts the inner side wall of the outer tube 1. Preferably, the front and rear ends of the inner tube 2 are annular structures with flush outer sides, so as to facilitate the clamping of the crown spring 3 and the inner tube 2. The first flange structure 312 is provided with a plurality of first openings 3121 arranged rearward, and the first openings 3121 are arranged at intervals along the circumference of the front ring 31; the second flange structure 322 is provided with a plurality of second openings 3221 arranged forward, and the second openings 3221 are arranged at intervals along the circumference of the rear ring 32. With the help of the first openings 3121 and the second openings 3221, the crown spring 3 is less likely to break during assembly.

[0027] See also Figure 2 The outer cylinder 1 includes an outer cylinder body 11, and mounting holes 12 that penetrate the front end surface and the rear end surface of the outer cylinder body 11 respectively, and the two mounting holes 12 are not connected to each other. One of the mounting holes 12 includes a first hole 121 and a second hole 122, the diameter of the first hole 121 is larger than the second hole 122, and a step structure 123 is formed at the intersection of the first hole 121 and the second hole 122. The inner cylinder 2 and the crown spring 3 are built in the first hole 121 and supported on the step structure 123. The other mounting hole 12 is a straight hole, so it is not limited to this.

[0028] Combined with the accompanying drawings, the working principle of the high-current crown spring jack 100 of the present invention is explained: when the pin is plugged into the high-current crown spring jack 100 of the present invention, the pin stretches the crown spring 3, the crown spring 3 has a tendency to elastically recover, and the inner tube 2 has a tendency to hold the crown spring 3, so the pin is held tightly under the two tendencies, thereby greatly increasing the holding force and also improving the plug-in life. When the pin is pulled out of the high-current crown spring jack 100 of the present invention, the crown spring 3 and the inner tube 2 are both restored at the same time.

[0029] It is understandable that the pin is well known to those skilled in the art, so it will not be described in detail here. It is worth noting that the crown spring 3 and the outer tube 1 are electrically connected.

[0030] Compared with the prior art, the high current crown spring jack 100 of the present invention is closely attached to the crown spring 3 by means of its inner cylinder 2, and the inner cylinder 2 always has a tendency to hold the crown spring 3. Therefore, when the pin is inserted into the crown spring 3, after the crown spring 3 is stretched, the crown spring 3 has a tendency to recover and hold the pin tightly. Since the inner cylinder 2 has a tendency to hold the crown spring 3, when the pin is inserted, the inner cylinder 2 and the crown spring 3 are deformed at the same time. After the pin comes in, the inner cylinder 2 holds the crown spring 3 tightly, and the crown spring 3 holds the pin tightly, thereby enhancing the holding force on the pin, so that the pin is not easy to loosen, especially suitable for occasions of vibration; in addition, by means of this tendency of the inner cylinder 2, the plug-in and pull-out life of the high current crown spring jack 100 of the present invention is greatly increased. In addition, by means of the front ring 31 and the rear ring 32 being closely attached to the inner side wall of the outer cylinder 1, the crown spring 3 and the outer cylinder 1 are connected.

[0031] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A high current crown spring jack, comprising an outer cylinder, an inner cylinder and a crown spring from outside to inside, the crown spring comprising a front ring, a rear ring and a spring sheet connected between the front ring and the rear ring, the front ring and the rear ring are each provided with a fracture that disconnects the front and rear ends, the spring sheets are spaced apart along the circumference of the front ring, all the spring sheets are concave toward the center line of the outer cylinder to form a waist-shaped structure, characterized in that: The inner tube is in close contact with the crown spring, the front ring and the rear ring are in close contact with the inner wall of the outer tube, the inner tube always has a tendency to hold the crown spring tightly, the inner tube is an elastic structure, and the inner tube expands and contracts as the crown spring expands and contracts.

2. The high current crown spring jack according to claim 1, characterized in that: The inner cylinder is provided with a disconnection opening so that the head and tail are disconnected.

3. The high current crown spring jack according to claim 2, characterized in that: The fracture opening and the disconnection opening are arranged in a staggered manner.

4. The high current crown spring jack according to claim 1, characterized in that: The front end and the rear end of the inner cylinder are annular structures with flush outer sides.

5. The high current crown spring jack according to claim 1, characterized in that: The inner cylinder is a waist-shaped cylinder structure.

6. The high current crown spring jack according to claim 1, characterized in that: The crown spring is an elastic structure with high conductivity, and the inner cylinder is an elastic structure with high yield strength.

7. The high current crown spring jack according to claim 1, characterized in that: The front end ring includes a first outward-turned flange structure, and the rear end ring includes a second outward-turned flange structure. The first flange structure is clamped to the front end of the inner tube and contacts the inner side wall of the outer tube, and the second flange structure is clamped to the rear end of the inner tube and contacts the inner side wall of the outer tube.

8. The high current crown spring jack according to claim 7, characterized in that: The first flange structure is provided with a plurality of first openings arranged rearwardly, and the first openings are arranged at intervals along the circumference of the front end ring; the second flange structure is provided with a plurality of second openings arranged forwardly, and the second openings are arranged at intervals along the circumference of the rear end ring.

9. The high current crown spring jack according to claim 1, characterized in that: The outer tube comprises an outer tube body, and mounting holes respectively penetrating the front end surface and the rear end surface of the outer tube body, and the two mounting holes are not connected to each other.

10. The high current crown spring jack according to claim 9, characterized in that: The mounting hole includes a first hole and a second hole. The diameter of the first hole is larger than that of the second hole. A step structure is formed at the intersection of the first hole and the second hole. The inner cylinder and the crown spring are built into the first hole and supported on the step structure.

Images