Quick-release elastic connector for penetrating a plate

Abstract

The present application relates to mass spectrometry detection system technical field, provide a kind of fast disassembly type elastic connector of passing through plate, for realizing the electric connection of cavity two sides, including the insulating seat of passing through cavity, the sealing element between cavity and insulating seat and the conductive needle of passing through insulating seat, the conductive needle is connected by screw thread insulating seat, it is characterized by further comprising sleeve, spring needle sliding in the sleeve and compression spring being sleeved in the middle part of spring needle;The cavity inside portion of the conductive needle is equipped with cavity, the cavity inside portion of the conductive needle is connected by screw thread with sleeve, the spring needle is partially inserted into the cavity, and the sliding in the cavity is limited by the sleeve.This scheme is detachable structure, easy to disassemble and assemble, is not subject to welding process, is suitable for various plate materials and cavity materials;Adopt the sealing mode of sealing ring combined with filling glue, process is simple and reliable, and cost is low;Connector and cavity inside circuit use elastic pressure type connection, exempt from plugging, easy to operate.

Description

Technical Field

[0001] This invention relates to the field of mass spectrometry detection system technology, and more specifically, to a quick-release through-plate elastic connector. Background Technology

[0002] The electrical control section of a mass spectrometer generally consists of a control unit and an execution unit. These two units are located outside and inside the vacuum chamber of the mass spectrometer, respectively. The connection between these two units requires an electrical through-plate connector. Existing technical solutions include high-pressure vacuum sealed connectors with standard male and female components, and vacuum-brazed ceramic through-plate connectors.

[0003] The installation process of the vacuum brazed ceramic through-plate connector is as follows: the Kovar alloy base and the conductive pin are vacuum brazed to achieve vacuum sealing and insulation welding. Then, the component is vacuum brazed to the stainless steel plate to complete the vacuum sealing and insulation welding, thereby realizing the connection and conduction of the circuits on both sides of the vacuum chamber.

[0004] The technical solution has the following drawbacks: the brazing process is expensive, leading to increased costs; the brazing process has limitations in the selection of cavity materials, only stainless steel cavities and Kovar alloy conductive needle components can be used for vacuum sealing and insulation welding; if the vacuum brazed product has poor sealing, it cannot be handled on-site and the entire component must be returned to the factory for repair welding; if the conductive needle is damaged, it cannot be disassembled and replaced, and the entire component must be scrapped; the conductive needle uses a plug-in connection method inside the cavity, which cannot quickly conduct electricity without plugging and unplugging. Summary of the Invention

[0005] The present invention aims to overcome at least one of the shortcomings of the prior art and provide a quick-release through-board elastic connector to solve the problem of difficult disassembly and replacement of through-board connectors in mass spectrometry detection systems, and to achieve quick conduction without plugging or unplugging.

[0006] The technical solution adopted by this invention is to provide a quick-release through-plate elastic connector that passes through a cavity to achieve electrical connection between the two sides of the cavity. It includes an insulating seat penetrating the cavity, a sealing element between the cavity and the insulating seat, and a conductive pin penetrating the insulating seat. The conductive pin is threadedly connected to the insulating seat. The invention is characterized by further including a sleeve, a spring pin sliding within the sleeve, and a compression spring fitted around the middle of the spring pin. A cavity is provided inside the inner part of the conductive pin's cavity. The sleeve is threadedly connected to the inner part of the conductive pin's cavity, and the spring pin is partially inserted into the cavity, with its sliding within the cavity restricted by the sleeve. The insulating seat has two functions: firstly, it forms high-voltage insulation between the insulating seat and the cavity to achieve electrical connection between the two sides of the cavity; secondly, the threaded connection between the insulating seat and the conductive pin forms a vacuum seal, and the fixed vacuum seal between the insulating seat and the cavity ensures that the vacuum state inside the cavity is not affected during the operation of the mass spectrometry detection system. The threaded connection between the insulating base and the conductive pin facilitates quick installation; the threaded connection between the inner side of the conductive pin's cavity and the sleeve facilitates quick replacement of the sleeve and spring pin during maintenance. The elastic connection between the spring pin and the conductive pin enables quick conduction without plugging or unplugging, simplifying operation.

[0007] Furthermore, the inner diameter of the cavity is larger than the inner diameter of the sleeve, and a limiting member is provided on the outer side of the middle part of the spring needle, abutting against the upper bottom surface of the sleeve inside the cavity. This helps to limit the sliding of the spring needle within the cavity and prevent the spring needle from coming out of the cavity.

[0008] Furthermore, a flange is fixed to the opening of the cavity in the sleeve; the spring needle includes an inner cavity, an outer cavity, and an expansion end, the inner cavity is inserted into the cavity, and the compression spring is sleeved on the outer cavity, with one end abutting the expansion end and the other end abutting the flange. The flange is used for installing and removing the threaded connection between the sleeve and the conductive needle.

[0009] Furthermore, the insulating seat has a wedge-shaped recess on the outer side of the cavity, and the conductive needle is located in the center of the wedge-shaped recess, gradually thickening in a stepped manner towards the side closer to the cavity; the conductive needle and the wedge-shaped recess are sealed with sealant. Filling with sealant helps to further enhance the sealing effect on the basis of the threaded connection between the conductive needle and the insulating seat, and the process is simple and reliable, which helps to reduce costs. The stepped, gradually thickening shape of the conductive needle helps to increase the strength of the conductive needle, and the stepped side forms a Z-shaped joint with the sealant, which helps to enhance the sealing effect.

[0010] Furthermore, the insulating base has an annular protrusion around the conductive needle at one end inside the cavity, and the annular protrusion and the conductive needle are fitted with a gap. The annular protrusion helps to isolate the conductive needle from the cavity, enhances the insulation effect, and prevents creepage.

[0011] Furthermore, a sliding space is formed within the cavity, and a transverse hole is provided on the sidewall of the sliding space. The transverse hole penetrates the sidewall of the conductive needle and connects to the gap. The sliding space, the transverse hole, and the gap together constitute an exhaust channel, which facilitates the evacuation of the sliding space into a vacuum during the operation of the mass spectrometer.

[0012] Preferably, there are multiple transverse holes that are symmetrically distributed. This facilitates the rapid discharge of gas from the sliding space.

[0013] Furthermore, the outer wall of the inner side of the conductive needle cavity is provided with an expansion portion, and a friction portion is provided on the expansion portion. Adding the friction portion narrows the outer wall of the conductive needle, reducing its strength; therefore, the outward expansion of the outer wall helps to improve the strength of the conductive needle. The friction portion serves an anti-slip function, used to grip the conductive needle when installing and removing components via threaded connections, such as screwing the sleeve into or out of the inner side of the conductive needle cavity, and screwing the conductive needle into the insulating seat.

[0014] Furthermore, the connection between the insulating base and the cavity includes a threaded connection, wherein the thread between the conductive pin and the insulating base is in the opposite direction to the thread between the insulating base and the cavity. When installing the quick-release through-plate flexible connector via the threaded connection, the conductive pin needs to be screwed into the insulating base from the inside to the outside of the cavity, and the insulating base needs to be screwed into the cavity from the outside to the inside. The opposite direction of the two threads helps to prevent the other thread from loosening when tightening one thread during installation.

[0015] Compared with existing technologies, the advantages of this invention are as follows: This solution adopts a plug-free design, with the connector and the internal circuit of the cavity connected by a spring-loaded connection, making operation simple. Multiple components are connected by threads, forming a detachable structure. Maintenance only requires replacing the sleeve and spring pin, and installation and disassembly are simple, without welding process limitations. It is applicable to various through-plate materials and cavity materials, such as through-plate materials not limited to Kovar alloy, and cavity materials not limited to stainless steel. The sealing method uses a sealing ring combined with adhesive filling, which is simple, reliable, and low-cost. The insulating seat has an annular protrusion to prevent creepage and ensure high-voltage insulation. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of a quick-release through-board flexible connector.

[0017] Figure 2 This is a cross-sectional view of the conductive needle.

[0018] Figure 3 This is a cross-sectional view of the spring needle and the sleeve.

[0019] Labeling Explanation: Conductive needle 100, insulating seat 200, sealing ring 300, cavity 400, compression spring 500, spring needle 600, sleeve 700, friction part 110, limiting part 610, hexagonal nut 710, sealant 800, annular protrusion 210, sliding space 120, transverse hole 130, gap 140. Detailed Implementation

[0020] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention. To better illustrate the following embodiments, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions; it is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0021] Example

[0022] like Figure 1 As shown, this embodiment provides a quick-release through-plate elastic connector that passes through a cavity 400 to achieve electrical connection between the two sides of the cavity 400. It includes an insulating seat 200 penetrating the cavity 400, a sealing ring 300 between the cavity 400 and the insulating seat 200, and a conductive pin 100 penetrating the insulating seat 200. The conductive pin 100 is threadedly connected to the insulating seat 200. The connector is characterized by further including a sleeve 700, a spring pin 600 sliding within the sleeve 700, and a compression spring 500 fitted in the middle of the spring pin 600. The inner side of the cavity 400 of the conductive pin 100 has a cavity. The sleeve 700 is threadedly connected to the inner side of the cavity 400 of the conductive pin 100. The spring pin 600 is partially inserted into the cavity, and its sliding within the cavity is restricted by the sleeve 700. The insulating base 200 serves two purposes: firstly, it forms high-voltage insulation between the insulating base 200 and the cavity 400, enabling electrical connection between the two sides of the cavity 400; secondly, the insulating base 200 and the conductive needle 100 form a vacuum seal through a threaded connection, and the fixed vacuum seal between the insulating base 200 and the cavity 400 ensures that the vacuum state inside the cavity 400 is not affected during the operation of the mass spectrometry detection system. The threaded connection between the insulating base 200 and the conductive needle 100 facilitates rapid installation; the threaded connection between the inner part of the conductive needle 100 within the cavity 400 and the sleeve 700 facilitates quick replacement of the sleeve 700 and the spring needle 600 during maintenance. The elastic connection between the spring needle 600 and the conductive needle 100 enables rapid conduction without plugging or removing, simplifying operation.

[0023] like Figure 1 and Figure 3As shown, the inner diameter of the cavity is larger than the inner diameter of the sleeve 700. A limiting member 610 is provided on the outer side of the middle part of the spring needle 600, which abuts against the upper bottom surface of the sleeve 700 inside the cavity. This helps to limit the sliding of the spring needle 600 in the cavity and prevent the spring needle 600 from coming out of the cavity.

[0024] like Figure 1 and Figure 3 As shown, a hexagonal nut 710 is fixed to the opening of the cavity in the sleeve 700; the spring needle 600 includes an inner cavity, an outer cavity, and an expansion end, the inner cavity being inserted into the cavity, and the compression spring 500 being sleeved on the outer cavity, one end abutting against the expansion end, and the other end abutting against the hexagonal nut 710. The hexagonal nut 710 is used to install and remove the threaded connection between the sleeve 700 and the conductive needle 100.

[0025] like Figure 1 As shown, the insulating base 200 has a wedge-shaped recess on the outer side of the cavity 400, and the conductive needle 100 is located in the center of the wedge-shaped recess, gradually thickening in a stepped manner towards the side closer to the cavity 400; the conductive needle 100 and the wedge-shaped recess are sealed by filling with sealant 800. Filling with sealant 800 helps to further enhance the sealing effect on the basis of the threaded connection between the conductive needle 100 and the insulating base 200, and the process is simple and reliable, which helps to reduce costs. The stepped, gradually thickening shape of the conductive needle 100 helps to increase the strength of the conductive needle 100, and the stepped side forms a Z-shaped joint with the sealant 800, which helps to enhance the sealing effect.

[0026] like Figure 1 As shown, the insulating base 200 has an annular protrusion 210 around the conductive needle 100 at one end inside the cavity 400. The annular protrusion 210 engages with the conductive needle 100 through a gap 140. The annular protrusion 210 helps isolate the conductive needle 100 from the cavity 400, enhancing insulation and preventing creepage. A sliding space 120 is formed within the cavity. The sidewall of the sliding space 120 has a transverse hole 130, which penetrates the sidewall of the conductive needle 100 and connects to the gap 140. The sliding space 120, the transverse hole 130, and the gap 140 together constitute an exhaust channel, facilitating the evacuation of the sliding space 120 into a vacuum during mass spectrometry operation. There are multiple transverse holes 130, symmetrically distributed, which facilitates the rapid discharge of gas from the sliding space 120.

[0027] like Figure 1 and Figure 2As shown, the outer wall of the inner side of the cavity 400 of the conductive needle 100 is provided with an expansion portion, and the expansion portion is provided with a friction portion 110. After adding the friction portion 110, the outer wall of the conductive needle 100 becomes narrower and its strength decreases. Therefore, the outward expansion of the outer wall helps to improve the strength of the conductive needle 100. The friction portion 110 is provided to prevent slippage and is used to grip the conductive needle 100 when installing and removing components through threaded connections, such as screwing the sleeve 700 into or out of the inner side of the cavity 400 of the conductive needle 100, and screwing the conductive needle 100 into the insulating seat 200.

[0028] like Figure 1 As shown, the connection between the conductive pin 100 and the insulating base 200 includes a threaded connection. The thread between the conductive pin 100 and the insulating base 200 is opposite in direction to the thread between the insulating base 200 and the cavity 400. When installing the quick-release through-plate flexible connector via the threaded connection, the conductive pin 100 needs to be screwed into the insulating base 200 from the inside to the outside of the cavity 400, and the insulating base 200 also needs to be screwed into the cavity 400 from the outside to the inside. The opposite direction of the two threads helps to prevent the other thread from loosening when tightening one thread during installation.

[0029] The installation process of the quick-release through-plate flexible connector is as follows: Hold the friction part 110 of the conductive pin 100 tightly, and screw the sleeve 700 into the inner part of the cavity 400 of the conductive pin 100 through the threaded connection; screw the conductive pin 100 into the insulating seat 200 in the direction from the inner side to the outer side of the cavity 400; after installing the sealing ring 300 on the outer side of the cavity 400, screw the insulating seat 200 into the cavity 400 in the direction from the outer side to the inner side of the cavity 400; on the outer side of the cavity 400, inject the sealant 800 into the wedge-shaped recess between the conductive pin 100 and the insulating seat 200, wait for the sealant 800 to solidify, and the installation is completed.

[0030] The disassembly process of the quick-release through-board elastic connector is as follows: Clamp the outer side of the cavity 400 of the insulating seat 200 with a wrench, unscrew the insulating seat 200 from the cavity 400 through the threaded connection, and then remove the sealing ring 300; unscrew the sleeve 700 from the inner side of the cavity 400 of the conductive pin 100 through the threaded connection.

[0031] The consumable parts of the quick-release through-board elastic connector are sleeve 700 and spring pin 600. During maintenance and replacement, sleeve 700 can be unscrewed from the inner side of cavity 400 of conductive pin 100 by threading the sleeve 700 out, and sleeve 700 and spring pin 600 can be replaced.

[0032] Obviously, the above embodiments of the present invention are merely examples to clearly illustrate the technical solutions of the present invention, and are not intended to limit the specific implementation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A quick-release through-plate flexible connector, passing through a cavity to achieve electrical connection between the two sides of the cavity, comprising an insulating seat penetrating the cavity, a seal between the cavity and the insulating seat, and a conductive pin penetrating the insulating seat, wherein the conductive pin is threaded to the insulating seat, characterized in that, It also includes a sleeve, a spring needle that slides within the sleeve, and a compression spring fitted around the middle of the spring needle; the inner side of the conductive needle's cavity has a cavity, the sleeve is threadedly connected to the inner side of the conductive needle's cavity, the spring needle is partially inserted into the cavity, and its sliding within the cavity is restricted by the sleeve; the insulating seat has a wedge-shaped recess on the outer side of the cavity, the conductive needle is located in the center of the wedge-shaped recess, and gradually thickens in a stepped manner towards the side closer to the cavity; the conductive needle and the wedge-shaped recess are sealed with sealant; the insulating seat has an annular protrusion around the conductive needle at one end of the inner side of the cavity, and the annular protrusion and the conductive needle are fitted with a clearance; a sliding space is formed within the cavity, and the sidewall of the sliding space has a transverse hole, which penetrates the sidewall of the conductive needle and connects to the clearance; The inner diameter of the cavity is larger than the inner diameter of the sleeve, and a limiting member is provided on the outer side of the middle part of the spring needle, which abuts against the upper bottom surface of the sleeve inside the cavity. The sleeve is fixed with a flange at the opening of the cavity; the spring needle includes an inner cavity, an outer cavity, and an expansion end, the inner cavity is inserted into the cavity, and the compression spring is sleeved on the outer cavity, with one end abutting the expansion end and the other end abutting the flange.

2. The quick-release through-plate flexible connector according to claim 1, characterized in that, The transverse holes are multiple and symmetrically distributed.

3. The quick-release through-plate flexible connector according to claim 1, characterized in that, The outer wall of the inner side of the cavity of the conductive needle is provided with an expansion section.

4. The quick-release through-plate flexible connector according to claim 3, characterized in that, The expansion portion is provided with a friction portion.

5. The quick-release through-plate flexible connector according to claim 1, characterized in that, The connection between the insulating base and the cavity includes a threaded connection, wherein the thread between the conductive needle and the insulating base is in the opposite direction to the thread between the insulating base and the cavity.

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