High-reliability push-fit assembly

Abstract

The utility model relates to refrigerating machine technical field, concretely is a kind of high reliability push component, it mainly includes: guide piston;Cold accumulator shell, the one end of guide piston is set;Anti-falling component, it is arranged between guide piston and cold accumulator shell.The high reliability push component of the application is coated with appropriate glue in the glue storage groove, then limit block is aligned with positioning groove, limit block can be pushed into positioning groove at this time, until limit block enters into limit slot, guide piston is rotated along limit slot, limit block moves in limit slot at this time, until it is rotated to the end of limit slot, limit slot holds limit block at this time, can effectively prevent guide piston and cold accumulator shell relative sliding in axial direction and circumferential relative rotation, prevent guide piston and cold accumulator shell from falling after long time movement, greatly improve the reliability of this component.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, specifically a high-reliability push assembly. Background Technology

[0002] Linear Stirling refrigerators are characterized by their compact structure, small size, light weight, and high efficiency, and are widely used in infrared cooling detectors, scientific research, and aerospace fields.

[0003] Linear Stirling refrigerators are compact in structure, have long operating hours, and are inconvenient to maintain. Therefore, the reliability and stability requirements of the refrigerators are very high. The guide piston is usually connected to the push piston through a push assembly (such as a connecting rod, spring plate, gap sealing assembly, etc.). However, the guide piston and the accumulator shell are often glued together. Since the movement of the accumulator components is a high-frequency movement, the guide piston and the accumulator shell are prone to detachment after a long period of operation. Utility Model Content

[0004] The purpose of this invention is to provide a highly reliable pushing component to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A high-reliability drift component includes: Guide piston; The accumulator shell is fitted onto one end of the guide piston; An anti-detachment component is disposed between the guide piston and the accumulator shell. The anti-detachment component includes a snap-fit ​​component, which is disposed between the guide piston and the accumulator shell and is used to snap the guide piston and the accumulator shell together.

[0006] Preferably, the snap-fit ​​component includes a limiting block, and multiple sets of limiting blocks are arranged sequentially on the outer wall of the guide piston along the circumferential direction; The snap-fit ​​component also includes a limiting groove, which is provided in multiple sets and is arranged sequentially along the circumferential direction on the inner wall of the cold accumulator shell; The limit blocks and limit slots are engaged in a one-to-one correspondence.

[0007] Preferably, the inner wall of the cold storage shell is provided with multiple sets of positioning grooves, and the multiple sets of limiting grooves are connected one-to-one with the multiple sets of positioning grooves. The positioning grooves extend axially along the inner wall of the cold storage shell, and the limiting grooves extend circumferentially along the inner wall of the cold storage shell. Each limiting groove is connected to the corresponding positioning groove and forms an "L" shaped structure.

[0008] Preferably, the width of the limiting block along the circumferential direction is the same as the width of the positioning groove along the circumferential direction, and the thickness of the limiting block along the axial direction is the same as the thickness of the limiting groove along the axial direction. Preferably, the anti-detachment component further includes an adhesive reservoir, which is formed on the guide piston and / or the accumulator housing for applying adhesive, and the adhesive reservoir is located on the side of the limiting block away from the accumulator housing.

[0009] Preferably, a guide cylinder is fitted onto the guide piston.

[0010] Preferably, a leaf spring is provided at the end of the guide cylinder away from the accumulator shell.

[0011] Preferably, the leaf spring is fixed to the guide cylinder by an internal hex screw.

[0012] Preferably, a clamping nut is provided on the guide piston, and the clamping nut is located on the side of the leaf spring away from the guide cylinder.

[0013] Preferably, a washer is provided between the compression nut and the leaf spring.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention provides a snap-fit ​​component between the guide piston and the accumulator shell to secure them together, effectively preventing axial sliding and circumferential rotation between the guide piston and the accumulator shell. This also prevents the guide piston and the accumulator shell from falling off after prolonged operation, greatly improving the reliability of the assembly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the present invention.

[0016] In the diagram: 1. Socket head screw; 2. Guide piston; 21. Glue storage tank; 22. Limiting block; 3. Compression nut; 4. Leaf spring; 5. Guide cylinder; 6. Cold accumulator shell; 61. Positioning groove; 62. Limiting groove; 7. Cold accumulator wire mesh. Detailed Implementation

[0017] 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.

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] like Figures 1-2 As shown, this application provides a high-reliability pushing assembly, including: a guide piston 2; a cold accumulator shell 6, sleeved on one end of the guide piston 2; and an anti-detachment component, disposed between the guide piston 2 and the cold accumulator shell 6. The anti-detachment component includes a snap-fit ​​component, which is disposed between the guide piston 2 and the cold accumulator shell 6 for snapping the guide piston 2 and the cold accumulator shell 6 together.

[0020] By setting a snap-fit ​​component between the guide piston and the accumulator shell to snap them together, the guide piston and the accumulator shell can be effectively prevented from sliding relative to each other in the axial direction and rotating relative to each other in the circumferential direction, and prevented from falling off the guide piston and the accumulator shell after long-term operation.

[0021] Specifically, such as Figure 2 As shown, the snap-fit ​​component includes a limiting block 22, which is provided in multiple sets and is arranged sequentially on the outer wall of the guide piston 2 along the circumferential direction; the snap-fit ​​component also includes a limiting groove 62, which is provided in multiple sets and is arranged sequentially on the inner wall of the accumulator shell 6 along the circumferential direction; the limiting block 22 and the limiting groove 62 are snap-fitted one-to-one.

[0022] By setting multiple sets of snap-fit ​​blocks, the stability of the snap-fit ​​is ensured, and damage to a single set of snap-fit ​​blocks can directly affect the fixation of the accumulator housing 6.

[0023] Specifically, such as Figure 2 As shown, multiple sets of positioning grooves 61 are also provided on the inner wall of the cold storage shell 6, and multiple sets of limiting grooves 62 are connected to the multiple sets of positioning grooves 61 one by one. The positioning grooves 61 extend axially along the inner wall of the cold storage shell 6, and the limiting grooves 62 extend circumferentially along the inner wall of the cold storage shell 6. Each limiting groove 62 is connected to the corresponding positioning groove 61 and forms an "L" shaped structure. The width of the limiting block 22 along the circumferential direction is the same as the width of the positioning groove 61 along the circumferential direction, and the thickness of the limiting block 22 along the axial direction is the same as the thickness of the limiting groove 62 along the axial direction.

[0024] Align the limiting block 22 with the positioning groove 61. Then, push the limiting block 22 into the positioning groove 61 until the limiting block 22 enters the limiting groove 62. Rotate the guide piston 2 along the limiting groove 62. At this time, the limiting block 22 moves within the limiting groove 62 until it rotates to the end of the limiting groove 62. At this time, the limiting groove 62 will lock the limiting block 22, which can effectively prevent the guide piston 2 and the cold accumulator shell 6 from rotating relative to each other in the circumferential direction.

[0025] Specifically, such as Figure 2 As shown, the anti-detachment component also includes a glue storage tank 21, which is opened on the guide piston 2 and / or the accumulator housing 6 for applying glue. The glue storage tank 21 is located on the side of the limiting block 22 away from the accumulator housing 6.

[0026] By applying an appropriate amount of glue to the glue storage tank 21, the accumulator shell 6 can be fixed after being snapped onto the guide piston 2, thus preventing it from sliding relative to the guide piston in the axial direction.

[0027] Specifically, such as Figure 1 As shown, a cold storage wire mesh 7 is installed inside the cold storage shell 6.

[0028] Specifically, such as Figure 1 As shown, a guide cylinder 5 is fitted onto the guide piston 2.

[0029] Specifically, such as Figure 1 As shown, a leaf spring 4 is provided at the end of the guide cylinder 5 away from the accumulator shell 6; the leaf spring 4 is fixed to the guide cylinder 5 by an internal hex screw 1.

[0030] The leaf spring 4 is secured by the internal hex screw 1 to prevent it from detaching from the guide cylinder 5.

[0031] Specifically, such as Figure 1 As shown, a clamping nut 3 is provided on the guide piston 2, and the clamping nut 3 is located on the side of the leaf spring 4 away from the guide cylinder 5; a washer is provided between the clamping nut 3 and the leaf spring 4.

[0032] The leaf spring 4 is axially limited by the clamping nut 3 to prevent it from shaking or falling off, and the clamping nut 3 is reinforced with a washer to tighten the leaf spring 4.

[0033] The specific details of this plan are as follows: After applying an appropriate amount of glue to the glue storage tank 21, align the limiting block 22 with the positioning groove 61. At this time, the limiting block 22 can be pushed into the positioning groove 61 until the limiting block 22 enters the limiting groove 62. Rotate the guide piston 2 along the limiting groove 62. At this time, the limiting block 22 moves in the limiting groove 62 until it rotates to the end of the limiting groove 62. At this time, the limiting groove 62 will lock the limiting block 22, which can effectively prevent the guide piston 2 and the cold accumulator shell 6 from sliding relative to each other in the axial direction and rotating relative to each other in the circumferential direction. This prevents the guide piston 2 and the cold accumulator shell 6 from falling off after long-term movement, and greatly improves the reliability of this component.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0035] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-reliability drifting component, characterized in that, include: Guide piston (2); The accumulator shell (6) is fitted onto one end of the guide piston (2); An anti-detachment component is disposed between the guide piston (2) and the accumulator shell (6). The anti-detachment component includes a snap-fit ​​component disposed between the guide piston (2) and the accumulator shell (6) for snapping the guide piston (2) and the accumulator shell (6).

2. The high-reliability drift assembly according to claim 1, characterized in that, The snap-fit ​​component includes a limiting block (22), and multiple sets of the limiting blocks (22) are arranged sequentially on the outer wall of the guide piston (2) along the circumferential direction; The snap-fit ​​component also includes a limiting groove (62), which is provided in multiple sets and is arranged sequentially on the inner wall of the cold storage shell (6) along the circumferential direction; The limiting block (22) and the limiting groove (62) are engaged in a one-to-one correspondence.

3. A high-reliability drift assembly according to claim 2, characterized in that, The inner wall of the cold storage shell (6) is also provided with multiple sets of positioning grooves (61). Multiple sets of limiting grooves (62) are connected to multiple sets of positioning grooves (61) one by one. The positioning grooves (61) extend axially along the inner wall of the cold storage shell (6), and the limiting grooves (62) extend circumferentially along the inner wall of the cold storage shell (6). Each limiting groove (62) is connected to the corresponding positioning groove (61) and forms an "L" shaped structure.

4. A high-reliability drift assembly according to claim 3, characterized in that, The width of the limiting block (22) along the circumferential direction is the same as the width of the positioning groove (61) along the circumferential direction, and the thickness of the limiting block (22) along the axial direction is the same as the thickness of the limiting groove (62) along the axial direction.

5. A high-reliability drift assembly according to claim 3, characterized in that, The anti-detachment component also includes a glue storage tank (21), which is formed on the guide piston (2) and / or the accumulator shell (6) for applying glue. The glue storage tank (21) is located on the side of the limiting block (22) away from the accumulator shell (6).

6. A high-reliability drift assembly according to claim 3, characterized in that, A guide cylinder (5) is fitted onto the guide piston (2).

7. A high-reliability drift assembly according to claim 6, characterized in that, A leaf spring (4) is provided at the end of the guide cylinder (5) away from the cold accumulator shell (6).

8. A high-reliability drift assembly according to claim 7, characterized in that, The leaf spring (4) is fixed to the guide cylinder (5) by an internal hex screw (1).

9. A high-reliability drift assembly according to claim 8, characterized in that, A clamping nut (3) is provided on the guide piston (2), and the clamping nut (3) is located on the side of the leaf spring (4) away from the guide cylinder (5).

10. A high-reliability drift assembly according to claim 9, characterized in that, A washer is provided between the clamping nut (3) and the leaf spring (4).

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