A clamp for connecting the motor part needle of a refrigerator to the driving adapter plate

Abstract

This invention proposes a fixture for connecting the sealing pin of a refrigerant motor component to a drive adapter plate, comprising: an annular rib, a limiting structure, and a fixing slot; wherein, the annular rib, located at the bottom of the fixture, is an annular structure; the bottom of the limiting structure is connected to the annular rib, and the limiting structure is distributed along the annular rib, with the upper parts of the limiting structures connected to each other to form an integral structure, and having a hole at the top, forming a cylindrical cavity structure with the annular rib; the fixing slot is located at the bottom of the annular rib, and the fixing slot matches the outer shell structure of the refrigerant motor component, so that the fixture has a unique fixed position when assembled on the refrigerant motor component. This invention can solve the connection problem between the sealing pin structure of a refrigerant motor component and the drive adapter plate for infrared detectors, and simultaneously achieves anti-misfit design, anti-dislodgement design, guiding and limiting design, anti-damage design, and component protection function.

Description

Technical Field

[0001] This invention relates to the field of mechanical design technology for infrared detectors, and in particular to a clamp for connecting the sealing pin of a refrigerator motor component to a drive adapter plate. Background Technology

[0002] Infrared detector components have a wide range of applications and are used in extremely complex environments, requiring good mechanical environmental adaptability and high reliability.

[0003] As an important component of infrared detectors, the Stirling refrigerator (hereinafter referred to as "the refrigerator") mainly functions to cool the infrared detector, provide a stable low-temperature environment for the infrared detector chip, reduce infrared detector noise, improve sensitivity and resolution, and thus improve infrared imaging performance.

[0004] In terms of electrical connection type, Stirling refrigerators can generally be divided into two types: pin-type Stirling refrigerators and connector-type Stirling refrigerators. The fixture involved in this invention is applicable to pin-type Stirling refrigerators.

[0005] The infrared detector components adapted to this type of refrigerator require an external power input to operate. The power is transferred through the refrigerator drive controller and then through the refrigerator motor drive adapter plate. The refrigerator motor drive adapter plate is physically connected to the sealing pins of the refrigerator motor components, thereby driving the refrigerator motor components to work. This drives the main shaft and crank connecting rod mechanism inside the refrigerator, enabling the compression unit and expansion unit to effectively complete the reverse Stirling cycle and achieve the effect of ultra-low temperature refrigeration.

[0006] The aforementioned refrigeration unit operates on a closed-loop Stirling cycle, filled with high-pressure gas. To ensure long-term stable operation, it is essential to maintain good airtightness and meet certain leakage rate requirements. Generally, refrigeration units rely on sealing threads installed on end cover flanges for sealing through compression and extension.

[0007] For this type of refrigeration motor component, there are 8 pins. On the one hand, these pins serve as a form of electrical connection, interlocking with the corresponding pin caps on the adapter plate to transfer the power supply and drive controller input. On the other hand, these pins and glass beads constitute the sealing pin structure of the motor component, undertaking the sealing function of the motor housing component. This sealing pin structure relies on the low-temperature sintering process of the glass beads to organically seal the pins and the housing into one piece, achieving the sealing of the housing component.

[0008] When the infrared detector assembly is working, the sealing pin structure of the Stirling refrigerator motor component needs to be connected to the drive adapter board to achieve power input to the drive controller. Currently, this is done manually by plugging and unplugging the connector. This method has the following problems:

[0009] 1. The 8 pin caps on the drive adapter board and the 8 sealing pins on the motor component must correspond one-to-one. However, the structure of the sealing pins on the drive adapter board and the motor component is symmetrically distributed. When manually plugging and unplugging, it is easy to cause incorrect plugging and unplugging of the drive adapter board, resulting in the component not working or the circuit being damaged.

[0010] 2. When infrared detector components are used in complex mechanical environments, the drive adapter plate and motor components may become loose due to external factors after the pins are connected, posing a certain risk of falling off.

[0011] 3. During manual installation, it is difficult to control the installation force. Excessive force or uneven installation force can easily cause the guide pin to be subjected to external force, resulting in micro-cracks in the glass sealing pin. If these cracks are further penetrated, air will leak at the glass sealing pin, affecting the sealing of the refrigeration unit.

[0012] 4. Repeated manual plugging and unplugging and installation can easily cause stress and pressure on the connecting leads attached to the adapter board, or even breakage of the insulation layer.

[0013] 5. The motor components and drive adapter board are directly exposed, making them extremely susceptible to bumps or scratches during handling and transportation.

[0014] Currently, there is a lack of effective technical solutions to address these issues. Summary of the Invention

[0015] The technical problem this invention aims to solve is how to avoid relying on manual plugging and unplugging in the process of connecting the sealing pin structure of the Stirling refrigerator motor component to the drive adapter board to achieve power and drive controller input. In view of this, this invention provides a fixture for connecting the sealing pin of the refrigerator motor component to the drive adapter board.

[0016] The technical solution adopted in this invention is that the clamp for connecting the sealing pin of the refrigeration machine motor component to the drive adapter plate includes:

[0017] The ring-shaped rib, located at the bottom of the fixture, has a ring-shaped structure.

[0018] The limiting structure is connected to the bottom of the ring rib and is distributed along the ring rib. The upper part of the limiting structure is connected to each other to form an integral structure and has a hole at the top, forming a cylindrical cavity structure with the ring rib.

[0019] A fixing slot is provided at the bottom of the annular rib. The fixing slot matches the motor housing of the refrigerant motor component so that the fixture has a unique fixed position when it is assembled on the motor component of the refrigeration machine.

[0020] In one embodiment, a threaded hole is provided at the inner cavity position of the upper part of the limiting structure.

[0021] In one embodiment, the annular rib has a uniformly distributed stepped limiting structure at the mating point where it contacts the motor housing of the refrigerant motor component.

[0022] In one embodiment, the clamp is made of plastic.

[0023] By adopting the above technical solution, the present invention has at least the following advantages:

[0024] This invention provides a fixture for connecting the sealing pin of a refrigerator motor component to a drive adapter plate. It solves the connection problem between the sealing pin structure of a refrigerator motor component and the drive adapter plate in infrared detectors, while simultaneously implementing anti-misalignment design, anti-dislodgement design, guide and limit design, damage prevention design, and component protection function. This fixture can be repeatedly installed and disassembled, achieving highly reliable engineering applications. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the fixture structure for connecting the sealing pin of the refrigeration machine motor component to the drive adapter plate according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the main components and fixture structure according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic plan view of the fixture assembly structure according to an embodiment of the present invention;

[0028] Figure 4 This is a three-dimensional schematic diagram of the fixture assembly structure according to an embodiment of the present invention.

[0029] Figure Labels

[0030] 1- A clamp for connecting the sealing pin of the motor component of a refrigeration unit to the drive adapter plate (referred to as a multi-functional clamp in the figure), 101- Limiting structure, 102- Ring rib structure, 103- Fixing slot structure;

[0031] 2-Fasting screw, 3-Drive adapter plate, 4-Adapter cable, 5-Motor component sealing pin, 6-Motor housing, 7-Refrigeration unit (Stirling refrigeration unit). Detailed Implementation

[0032] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0033] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for ease of illustration. The drawings are for illustrative purposes only and are not drawn to scale.

[0034] It should also be understood that the terms "comprising," "including," "having," "containing," and / or "comprising," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. Furthermore, when expressions such as "at least one of..." appear after a list of listed features, they modify the entire listed feature, not individual elements in the list. Additionally, when describing embodiments of this application, the word "may" is used to mean "one or more embodiments of this application." And the term "exemplary" is intended to refer to an example or illustration.

[0035] As used herein, the terms “basically,” “approximately,” and similar terms are used as terms of approximation rather than terms of degree, and are intended to describe inherent biases in measured or calculated values ​​that will be recognized by those skilled in the art.

[0036] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should also be understood that terms (e.g., those defined in common dictionaries) shall be interpreted as having the meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense unless expressly so specified herein.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] According to an embodiment of the present invention, a clamp for connecting the sealing pin of a refrigeration machine motor component to a drive adapter plate is provided, such as... Figure 1 As shown, it includes:

[0039] The annular rib 102 is located at the bottom of the clamp 1 and has an annular structure;

[0040] The limiting structure 101 is connected to the bottom of the annular rib 102 and is distributed along the annular structure on the annular rib 102. The upper parts of the limiting structure 101 are connected to each other to form an integral structure and have a hole at the top, forming a cylindrical cavity structure with the annular rib 102.

[0041] The fixing slot 103 is located at the bottom of the annular rib 102. The fixing slot 103 matches the structure of the motor housing 6 of the refrigerant motor component so that the clamp 1 has a unique fixed position when it is assembled on the refrigeration motor component.

[0042] The structure provided in this embodiment can generally be applied to the insertion of a pin-type Stirling refrigerator 7 and the corresponding drive adapter plate 3. Specifically, the multi-functional clamp 1 utilizes the cylindrical characteristic of the motor housing 6 and is designed as a cup-shaped cylindrical nested structure. To prevent the drive adapter plate 3 from being mis-inserted into the motor component's sealing pin 5, a fixing slot 103 and annular rib 102 are added to the bottom of the cylindrical structure. Combined with the main structure of the refrigerator 7, the clamp 1 and the motor component of the refrigerator 7 can be nested and fixed, forming a unique physical positioning. That is, the clamp 1 can only be installed and fixed when the definition of the adapter plate matches the definition of the motor component's sealing pin 5, thus avoiding mis-insertion.

[0043] In one embodiment, a threaded hole is provided at the inner cavity position of the upper part of the limiting structure 101.

[0044] Specifically, considering the risk of the drive adapter plate 3 and the motor component sealing pin 5 being easily loosened or even falling off, a threaded hole is opened at the top of the inner cavity of the clamp 1, and two fastening screws 2 are screwed in opposite directions to fix the drive adapter plate 3 to the top of the clamp 1 to achieve the anti-fall-off function. At the same time, the drive adapter plate 3, the motor component sealing pin 5, and the Stirling refrigeration machine 7 motor housing 6 are fixed as one unit.

[0045] In one embodiment, the annular rib 102 is provided with a uniformly distributed stepped limiting structure at the mating point where it contacts the motor housing 6 of the refrigerant motor component.

[0046] Specifically, to address the issue that excessive pressure from the drive adapter plate 3 or tilted installation during manual assembly may cause the motor component sealing pin 5 to crack, penetrate, and leak air, a uniformly distributed stepped limiting structure is designed at the mating point between the inner cavity of the cylindrical part of the clamp 1 and the end face of the motor housing 6. This structure limits the axial fixed position and angle of the drive adapter plate 3 and the motor component sealing pin 5, preventing the drive adapter plate 3 and the motor component sealing pin 5 from being too close together and being squeezed, thus affecting the sealing performance of the motor component sealing pin.

[0047] Meanwhile, the aforementioned stepped limiting structure avoids the problem that the adapter cable 4 wrapped around the lower end of the drive adapter plate 3 is easily squeezed or even the insulation layer is broken due to repeated manual insertion and removal, thus realizing the anti-damage function of the adapter cable 4 during insertion and removal.

[0048] It should be noted that the adapter cable 4, as the lead wire for connecting the external power supply and the input of the drive controller, is evenly wound around the two small holes on the drive adapter plate 3, passes around the lower end face, and has its head exposed on the upper end face. It is fixed to the pad by the solder joint and then connects to the pin cap on the drive adapter plate 3. Its main function is to connect the external power supply and the drive controller lead wire to the sealing pin of the motor component.

[0049] Furthermore, the fixture 1 is designed with component protection in mind. The integrated cup-shaped cylindrical nested structure organically fixes the motor housing 6, motor component sealing pin 5, and drive adapter plate 3 into one unit, effectively protecting the product and preventing damage during the testing, screening, and transportation of the infrared detector components.

[0050] Preferably, the clamp 1 can be made of soft plastic material, which organically fixes the drive adapter plate 3, motor component sealing pin 5, motor housing 6 and other components into one piece, realizing overall fixation and wrapping, effectively preventing the motor components and adapter plate from being bumped and damaged, and realizing the protection function of the components.

[0051] In summary, compared with the prior art, the present invention has at least the following advantages:

[0052] 1) Anti-misinsertion function design:

[0053] The drive adapter board's pin definitions correspond one-to-one with those of the motor components. The eight pin caps on the drive adapter board are symmetrically distributed, making them prone to misalignment during manual insertion and removal, potentially causing component malfunction or circuit damage. To address this issue, a clamp with anti-misalignment functionality was designed to cleverly fix the relative positions of the motor housing and the drive adapter board. This clamp design utilizes the external structural features of the refrigeration unit, using a fixing slot and annular rib on the bottom to mount it onto the refrigeration unit's motor components. Because the clamp's fixing position is unique, the drive adapter board can only be inserted into the corresponding motor component pin structure via this clamp when the pin definitions of the motor components and the drive control board match; otherwise, it cannot be successfully installed.

[0054] 2) Anti-fall-off function design:

[0055] In practical applications, infrared detector components face extremely complex stress environments. The connection between the drive adapter plate and the motor component's sealing pin is merely a physical plug-and-play method, resulting in poor stability. Especially when subjected to prolonged and frequent mechanical vibrations, the connection between the drive adapter plate's pin cap and the motor component's sealing pin may loosen or even detach. If detached, this could lead to the failure of the infrared detector component.

[0056] To improve the high reliability of the adapter plate fixing, the fixture innovatively adopts a reverse screw fixing method. First, the drive adapter plate is screwed and nested in the annular groove of the fixture with two fastening screws. Then, the fixture is guided and assembled on the motor component to realize the insertion of the sealing pin.

[0057] This design effectively solves the risk of the adapter plate becoming loose or falling off, achieving an anti-fall-off function.

[0058] 3) Guide and limit function design:

[0059] When manually installing the drive adapter plate and motor components, it is difficult to control the appropriate force and angle. If the force is too great or the installation angle is significantly tilted, the pin can easily be subjected to uneven force, resulting in axial and radial forces on the pin. This can cause micro-cracks in the glass sealing pin. Furthermore, if the cracks penetrate, it will lead to air leakage from the sealing pin and failure of the refrigerator seal. This fixture is cleverly designed with a limiting structure. When the drive adapter plate is inserted into the motor component sealing pin, multiple stepped limiting structures on the fixture limit the axial insertion depth of the adapter plate on the upper end face of the motor component, avoiding damage and cracking of the glass sealing pin caused by excessive manual force.

[0060] 4) Damage protection function:

[0061] The drive adapter board has evenly distributed openings and is wrapped with adapter cables that connect to the power supply and drive controller inputs. The cables are wrapped around the end face that intersects with the motor component's sealing pins, and solder joints are led out on the other side. When manually and repeatedly plugging and unplugging the adapter board from the motor sealing pins, excessive force may be applied, causing damage to the adapter cables or breakage of the insulation layer.

[0062] The fixture is designed with damage prevention in mind. The axial relative position between the adapter plate and the sealing pin end face of the motor component is limited by the limiting step structure, which effectively avoids the possible stress and squeezing of the winding of the adapter plate and realizes the function of preventing damage to the connecting wire.

[0063] 5) Protection functions:

[0064] The motor components of the infrared detector assembly's refrigerator and the drive adapter board are directly exposed, making them extremely susceptible to bumps or scratches during component selection, testing, and transportation.

[0065] The clamp is made of soft plastic and organically fixes the drive adapter plate, motor component sealing pins, motor housing and other components into one piece, achieving overall fixation and wrapping. It can effectively prevent the motor components and adapter plate from being bumped and damaged, and realize the protection function of the components.

[0066] Through the description of specific embodiments, a more in-depth and specific understanding should be gained of the technical means and effects adopted by the present invention to achieve the intended purpose. However, the accompanying drawings are only provided for reference and illustration and are not intended to limit the present invention.

Claims

1. A clamp for connecting the sealing pin of a refrigeration machine motor component to a drive adapter plate, characterized in that, include: The annular rib, located at the bottom of the clamp, has an annular structure. A limiting structure, wherein the bottom of the limiting structure is connected to the annular rib, and is distributed along the annular structure on the annular rib; the upper parts of the limiting structure are connected to each other to form an integral structure, and a hole is opened at the top, forming a cylindrical cavity structure with the annular rib. A fixing slot is provided at the bottom of the annular rib. The fixing slot matches the motor housing of the motor component of the refrigeration machine so that the fixture has a unique fixed position when it is assembled on the motor component of the refrigeration machine. A threaded hole is provided at the inner cavity position of the upper part of the limiting structure; The annular rib has a uniformly distributed stepped limiting structure at the contact point with the motor housing of the refrigeration motor component. The clamp is used for the insertion of a pin-type Stirling refrigerator and the corresponding drive adapter plate. The clamp has an overall cup-shaped cylindrical nested structure that fixes the motor housing, motor component sealing pin, and drive adapter plate into one unit to avoid damage. A threaded hole is opened at the top of the inner cavity of the clamp, and two fastening screws are screwed in opposite directions to fix the drive adapter plate to the top of the clamp to achieve the function of preventing it from falling off. The adapter cable, which serves as the lead wire for connecting the external power supply and the input of the drive controller, is evenly wound around two small holes on the drive adapter board, passes around the lower end face, and has its head exposed on the upper end face. It is fixed to the pad by solder points and then connects to the pin cap on the drive adapter board, thus serving to connect the external power supply and drive controller lead wire to the sealing pin of the motor component.

2. The clamp for connecting the sealing pin of a refrigeration machine motor component to the drive adapter plate according to claim 1, characterized in that, The clamp is made of plastic.

Images