Compressor anti-collision structure and compressor for vehicle-mounted refrigerator

Abstract

The utility model provides a kind of compressor anti-collision structure and compressor for vehicle refrigerator. Compressor anti-collision structure is arranged on cylinder body, and compressor anti-collision structure includes: cylinder cover, cylinder cover has at least one first connecting hole;Anti-collision sleeve, anti-collision sleeve is sleeved on cylinder cover, and anti-collision sleeve covers at least a portion of the front sidewall and circumferential sidewall of cylinder cover, anti-collision sleeve has at least one second connecting hole, and the second connecting hole is provided with a limiting boss;At least one connecting piece, connecting piece is arranged in first connecting hole and second connecting hole, connecting piece has first matching step surface, first matching step surface is in abutment with limiting boss, and connecting piece is connected with cylinder cover;Wherein, the side of cylinder body away from crankcase is front side. The utility model solves the problem of large noise in the prior art vehicle refrigerator.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and more specifically, to a compressor anti-collision structure and a compressor for a vehicle refrigerator. Background Technology

[0002] As a core component of the refrigeration system, the vehicle refrigerator compressor is primarily responsible for compressing the refrigerant from a low-pressure, low-temperature state to a high-pressure, high-temperature state, thereby achieving the refrigeration cycle. However, compared to traditional household refrigerator compressors, vehicle refrigerator compressors face much harsher operating environment challenges. During vehicle operation, the compressor not only endures various road bumps and mechanical vibrations caused by vehicle acceleration and deceleration, but is also frequently in a tilted and moving state. These complex dynamic conditions cause the vehicle refrigerator compressor to constantly move, tilt, and impact, easily leading to damage to the internal components. Furthermore, the noise generated by the impact between the compressor internal components and the metal casing is significant, resulting in excessive refrigerator vibration and noise. Since the refrigerator is placed inside the car, the noise generated greatly affects the driving and passenger experience.

[0003] In other words, existing technology for in-vehicle refrigerators suffers from excessive noise. Utility Model Content

[0004] The main purpose of this utility model is to provide a compressor anti-collision structure and a compressor for vehicle refrigerators, so as to solve the problem of high noise in existing vehicle refrigerators.

[0005] To achieve the above objectives, according to one aspect of the present invention, a compressor anti-collision structure is provided. The compressor anti-collision structure is disposed on a cylinder block and includes: a cylinder head having at least one first connecting hole; an anti-collision sleeve fitted onto the cylinder head, covering at least a portion of the front sidewall and circumferential sidewall of the cylinder head, the anti-collision sleeve having at least one second connecting hole, the second connecting hole having a limiting boss; and at least one connector passing through the first connecting hole and the second connecting hole, the connector having a first mating step surface abutting against the limiting boss, the connector being connected to the cylinder head; wherein the side of the cylinder block facing away from the crankcase is the front side.

[0006] Furthermore, the area of ​​the second connecting hole is larger than that of the first connecting hole, and the connector also has a second mating step surface, which abuts against the wall surface of the cylinder head exposed in the second connecting hole.

[0007] Furthermore, the connector includes a nut section, a first connecting section, a second connecting section, and a third connecting section connected in sequence. The outer diameter of the first connecting section is smaller than the outer diameter of the nut section, and the connection between the first connecting section and the nut section forms a first mating step surface. The outer diameter of the second connecting section is smaller than the outer diameter of the first connecting section, and the connection between the second connecting section and the first connecting section forms a second mating step surface. The third connecting section is connected to the cylinder head.

[0008] Furthermore, the length L3 of the first connecting segment and the hole depth H1 of the second connecting hole satisfy the following condition: 0.5≤L3 / H1≤0.8.

[0009] Furthermore, the ratio of the contact area between the second mating step surface and the exposed wall surface of the cylinder head inside the second connecting hole to the hole area of ​​the first connecting hole is greater than or equal to 0.6 and less than or equal to 0.9; and / or the ratio of the contact area between the first mating step surface and the limiting boss to the hole area of ​​the second connecting hole is greater than or equal to 0.4 and less than or equal to 0.7.

[0010] Furthermore, the side surface of the anti-collision sleeve facing the cylinder head has a supporting boss extending into the cylinder head, the second connecting hole penetrates the supporting boss, the top surface of the supporting boss abuts against the cylinder head, and the top surface of the boss surrounds the first connecting hole.

[0011] Furthermore, the cylinder head wall has a relief groove, the first connecting hole is located at the bottom surface of the relief groove, the top surface of the supporting boss abuts against the bottom surface of the relief groove, and a portion of the side surface of the supporting boss abuts against a portion of the side wall of the relief groove.

[0012] Furthermore, the surface of the anti-collision sleeve facing away from the cylinder head has a front anti-collision surface, which is located on the front side of the front sidewall of the cylinder head. The front anti-collision surface has a second connecting hole, and the nut section of the connector is located in the second connecting hole. The distance L5 between the nut section and the front anti-collision surface is greater than or equal to 1 mm and less than or equal to 3 mm.

[0013] Furthermore, the surface gap between the anti-collision sleeve and the cylinder head is less than or equal to 0.1 mm.

[0014] Furthermore, the surface of the anti-collision sleeve facing the cylinder head includes: a front contact surface, which is in contact with the front side wall of the cylinder head; a top contact surface, which is located above the front contact surface and is connected to the front contact surface through a curved transition, and is in contact with the top wall of the cylinder head; and two side contact surfaces, which are located on opposite sides of the front contact surface and the top contact surface, and are connected to both the front contact surface and the top contact surface through a curved transition to form a covering structure.

[0015] Furthermore, the length L1 of the anti-collision sleeve along the vertical direction is greater than the length L2 of the anti-collision sleeve along the front-back direction. Here, the front-back direction refers to the arrangement direction of the cylinder block and crankcase, and the vertical direction is the direction perpendicular to the plane where the compressor is placed.

[0016] According to another aspect of the present invention, a compressor for a vehicle refrigerator is provided, including the above-described compressor anti-collision structure.

[0017] The compressor anti-collision structure using the technical solution of this utility model includes a cylinder head, an anti-collision sleeve, and at least one connector. The cylinder head has at least one first connecting hole. The anti-collision sleeve is fitted onto the cylinder head and covers at least a portion of the front sidewall and circumferential sidewall of the cylinder head. The anti-collision sleeve has at least one second connecting hole, and a limiting boss is provided in the second connecting hole. The connector passes through the first connecting hole and the second connecting hole. The connector has a first mating step surface, which abuts against the limiting boss. The connector is connected to the cylinder head. The side of the cylinder block away from the crankcase is the front side.

[0018] The compressor anti-collision structure is installed on the cylinder block. Through the coordinated action of the cylinder head and the anti-collision sleeve, the risk of the vehicle refrigerator compressor colliding with the cylinder head during vehicle movement is reduced. This reduces the risk of the cylinder head transmitting force to the cylinder block, effectively reducing noise caused by metal-to-metal collisions. It also effectively reduces metal debris generated by metal-to-metal collisions, thus reducing the risk of metal debris causing the compressor to seize up, effectively extending the service life of the vehicle refrigerator compressor. By using a connector that mates with the first and second connecting holes, the anti-collision sleeve can be stably mounted on the cylinder head, effectively reducing the risk of the anti-collision sleeve detaching from the cylinder head. The connector connects to the cylinder head to limit its movement, preventing it from shifting within the first connecting hole. Simultaneously, the first mating step surface of the connector precisely mates with the limiting boss in the second connecting hole, ensuring the anti-collision sleeve is firmly secured to the cylinder head, preventing loosening or detachment even under extreme conditions, providing a stable installation platform. This structural design not only stabilizes the position of the anti-collision sleeve but also limits the vibration amplitude of the connector, ensuring its operation within a safe range and effectively reducing metal debris generated by collisions between the connector and the cylinder head. By eliminating the source of metal debris and preventing it from mixing into the lubricating oil, the risk of the compressor seizing up is avoided, thereby improving the reliability of compressor operation and extending its service life. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1This invention illustrates a compressor anti-collision structure according to an optional embodiment of the present invention;

[0021] Figure 2 It shows Figure 1 A structural diagram of the anti-collision sleeve at one angle;

[0022] Figure 3 It shows Figure 1 Another structural diagram of the anti-collision sleeve;

[0023] Figure 4 It shows Figure 1 Another structural diagram of the anti-collision sleeve;

[0024] Figure 5 It shows Figure 1 A structural diagram of the connector at one angle;

[0025] Figure 6 A schematic diagram showing the positional relationship between the compressor anti-collision structure and the cylinder head and cylinder block of an optional embodiment of the present invention is shown.

[0026] The above figures include the following reference numerals:

[0027] 10. Cylinder head; 11. First connecting hole; 12. Clearance groove; 20. Anti-collision sleeve; 21. Second connecting hole; 211. Limiting boss; 22. Supporting boss; 221. Top surface of boss; 222. Side surface of boss; 23. Front mating surface; 24. Top mating surface; 25. Side mating surface; 26. Front anti-collision surface; 27. Top anti-collision surface; 28. Side anti-collision surface; 30. Connector; 31. First mating step surface; 33. Second mating step surface; 34. Nut section; 35. First connecting section; 36. Second connecting section; 37. Third connecting section; 40. Cylinder block. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] To address the issue of excessive noise in existing vehicle-mounted refrigerators, this invention provides a compressor anti-collision structure and a compressor for vehicle-mounted refrigerators.

[0032] like Figures 1 to 6 As shown, the compressor anti-collision structure is installed on the cylinder block 40. The compressor anti-collision structure includes a cylinder head 10, an anti-collision sleeve 20, and at least one connector 30. The cylinder head 10 has at least one first connecting hole 11. The anti-collision sleeve 20 is fitted on the cylinder head 10 and covers at least a portion of the front side wall and the circumferential side wall of the cylinder head 10. The anti-collision sleeve 20 has at least one second connecting hole 21, and a limiting boss 211 is provided in the second connecting hole 21. The connector 30 passes through the first connecting hole 11 and the second connecting hole 21. The connector 30 has a first mating step surface 31, which abuts against the limiting boss 211. The connector 30 is connected to the cylinder head 10. The side of the cylinder block 40 away from the crankcase is the front side.

[0033] The compressor anti-collision structure is installed on the cylinder block 40. Through the coordinated action of the cylinder head 10 and the anti-collision sleeve 20, the risk of the vehicle refrigerator compressor colliding with the cylinder head 10 during vehicle operation is reduced. This reduces the risk of the cylinder head 10 transmitting force to the cylinder block 40, effectively reducing noise caused by metal collisions. It also effectively reduces metal debris generated by metal-to-metal collisions, thereby reducing the risk of metal debris causing the compressor to seize up and effectively improving its service life. By providing a connector 30 that engages with the first connecting hole 11 and the second connecting hole 21, the anti-collision sleeve 20 can be stably mounted on the cylinder head 10, effectively reducing the risk of the anti-collision sleeve 20 detaching from the cylinder head 10. The connector 30 is connected to the cylinder head 10 to limit its movement and prevent it from shifting within the first connecting hole 11. Simultaneously, the first mating step surface 31 of the connector 30 precisely engages with the limiting boss 211 within the second connecting hole 21 to ensure the anti-collision sleeve 20 is securely fastened to the cylinder head 10, preventing loosening or detachment even under extreme conditions, thus providing a stable mounting platform. This structural design not only stabilizes the position of the anti-collision sleeve 20 but also limits the vibration amplitude of the connector 30, ensuring its safe operation and effectively reducing metal debris generated by collisions between the connector 30 and the cylinder head 10. By eliminating the source of metal debris and preventing it from mixing into the lubricating oil, the risk of the compressor seizing is avoided, thereby improving the compressor's operational reliability and extending its service life.

[0034] In some alternative embodiments, the connector 30 is made of a polymer elastomer material. During operation, when the compressor starts and is subjected to vibration or impact in the vehicle driving environment, the anti-collision sleeve 20 made of polymer elastomer material can respond in time, absorb the energy of external impact through its own elasticity and deformation, thereby buffering the vibration of the core and avoiding direct impact between metal parts.

[0035] Specifically, when the compressor encounters bumps during operation, the protective sleeve 20 immediately comes into play, dispersing the impact force through the elastic deformation of the material, reducing the vibration energy directly transmitted to the compressor core, effectively controlling the forward and lateral displacement of the core, and avoiding metal-to-metal contact and wear caused by severe vibration. The limiting design of the connector 30 ensures a firm connection between the protective sleeve 20 and the cylinder head 10, maintaining the stability of the compressor's internal structure even under high-frequency vibration environments, preventing the protective structure from shifting or falling off due to external forces. Furthermore, the high-molecular elastomer used in the protective sleeve 20 has excellent temperature and oil resistance, maintaining good mechanical strength and elasticity even under prolonged operation and harsh temperature conditions, ensuring the effectiveness and durability of the protective structure throughout its service life. Through the above synergistic effects, this solution achieves smooth operation of the vehicle refrigerator compressor under complex driving conditions, significantly reducing noise levels and creating a quieter and more comfortable operating environment for users, while protecting the internal mechanisms of the compressor from external impacts, improving overall operating efficiency and safety.

[0036] In some alternative embodiments, the connector 30 is connected to the cylinder head 10 by means of a threaded connection between the connector 30 and a portion of the first connecting hole 11 of the cylinder head 10, so as to fix the connector 30 to the cylinder head 10.

[0037] In some alternative embodiments, the connector 30 is connected to the cylinder head 10, or it can be connected to the cylinder head 10 via a fastener. A portion of the connector 30 extends through the first connecting hole 11 and is threadedly connected to the fastener to fix the connector 30 to the rear side of the cylinder head 10. Of course, in some alternative embodiments, the connector 30 and the cylinder head 10 can be fixed by snap-fit, or the connector 30 can be fixed by snap-fit ​​to the fastener. There are no specific limitations here, as long as it is ensured that the connector 30 can be fixed to the cylinder head 10.

[0038] In some alternative embodiments, please refer to Figure 1The second connecting hole 21 has a larger area than the first connecting hole 11. The connector 30 also has a second mating step surface 33, which abuts against the exposed wall surface of the cylinder head 10 within the second connecting hole 21. This difference in hole area better accommodates the assembly requirements of the connector 30, ensuring connection stability and balanced load distribution. The connector 30 also has a second mating step surface 33, which tightly abuts against the wall surface of the cylinder head 10. This design not only enhances the connection stability between the connector 30 and the cylinder head 10 but also forms a stepped fixing structure through the cooperation of multiple step surfaces. This structure effectively distributes stress, reduces stress concentration at the connection points, and thus improves the vibration resistance and long-term operational reliability of the entire compressor cylinder head assembly. Under different operating conditions, the second mating step surface 33 contacts the wall of the cylinder head 10, providing additional support to prevent component displacement due to external impacts, further ensuring the safe operation and performance of the compressor in the vehicle environment. Furthermore, this design helps simplify the assembly process, improves production efficiency, and ensures that each connection point is precisely and stably fixed, thereby reducing the probability of problems caused by improper assembly. In other embodiments not shown, the number and position of the step surfaces can be adjusted to adapt to the specific needs of different compressor models, achieving a more optimized connection effect.

[0039] In some alternative embodiments, please refer to Figure 5 The connector 30 includes a nut section 34, a first connecting section 35, a second connecting section 36, and a third connecting section 37 connected sequentially. The outer diameter of the first connecting section 35 is smaller than the outer diameter of the nut section 34, and the connection between the first connecting section 35 and the nut section 34 forms a first mating step surface 31. The outer diameter of the second connecting section 36 is smaller than the outer diameter of the first connecting section 35, and the connection between the second connecting section 36 and the first connecting section 35 forms a second mating step surface 33. The third connecting section 37 connects to the cylinder head 10. The connector 30 exhibits an innovative stepped structural design, composed of the nut section 34, the first connecting section 35, the second connecting section 36, and the third connecting section 37 connected sequentially. The key to this design lies in the difference in outer diameter between the sections and the steps they form.

[0040] Specifically, the outer diameter of the first connecting section 35 is smaller than that of the nut section 34, and the first mating step surface 31 at the connection between the two provides precise positioning for subsequent components. The outer diameter of the second connecting section 36 is further reduced than that of the first connecting section 35, forming a second mating step surface 33, which enhances the layering and stability of the structure. Overall, the stepped connector 30 not only achieves efficient connection and reliable fixation of the compressor cylinder head assembly and cylinder head 10, but also effectively distributes the load and reduces stress concentration through its special structural design, thereby improving the stability and service life of the overall structure and showcasing the ingenuity of the design. In practical applications, this stepped connector can adapt to different installation environments, ensuring that the compressor maintains its optimal working condition under various conditions, reducing maintenance frequency, and enhancing user satisfaction. Of course, this design of the connector 30 is not limited to the illustrated embodiment. In different application scenarios, by adjusting the outer diameter ratio of each section and the specific dimensions of the step groove, a wider range of functions and optimized performance can be achieved.

[0041] In some alternative embodiments, the third connecting segment 37 is a threaded segment, and the third connecting segment 37 is threadedly engaged with the first connecting hole 11.

[0042] In some optional embodiments, the length L3 of the first connecting segment 35 and the hole depth H1 of the second connecting hole 21 satisfy the following condition: 0.5 ≤ L3 / H1 ≤ 0.8. The first connecting segment 35 and the second connecting hole 21 are located on the side of the limiting boss 211 facing the cylinder head 10. If L3 / H1 is less than 0.5, it indicates that the length of the first connecting segment 35 is too short, and it also indicates that the distance between the top surface 221 of the boss 22 and the limiting boss 211 is too short. This can easily lead to insufficient support force of the limiting boss 211 on the first mating step surface 31, resulting in unstable connection between the first connecting segment 35 and the anti-collision sleeve 20. If L3 / H1 is greater than 0.8, it can easily lead to the second connecting hole 21 not being able to hide the nut section of the connector 30 inside the second connecting hole 21. This can easily cause the compressor housing to collide with the connector 30 when vibration or impact occurs, increasing the risk of damage to the cylinder head 10.

[0043] It should be noted that the hole depth H1 of the second connecting hole 21 refers to the minimum hole depth.

[0044] In some optional embodiments, the ratio of the contact area between the second mating step surface 33 and the exposed wall surface of the cylinder head 10 within the second connecting hole 21 to the hole area of ​​the first connecting hole 11 is greater than or equal to 0.6 and less than or equal to 0.9. If the ratio of the contact area between the second mating step surface 33 and the exposed wall surface of the cylinder head 10 within the second connecting hole 21 to the hole area of ​​the first connecting hole 11 is less than 0.6, the contact area between the second mating step surface 33 and the cylinder head 10 is likely to be small, which may lead to a risk of relative movement between the connector 30 and the cylinder head 10. If the ratio of the contact area between the second mating step surface 33 and the exposed wall surface of the cylinder head 10 within the second connecting hole 21 to the hole area of ​​the first connecting hole 11 is greater than 0.9, the structural strength of the portion of the connector 30 passing through the first connecting hole 11 is likely to be poor, posing a risk of breakage and affecting the stability of use.

[0045] In some optional embodiments, the ratio of the contact area between the first mating step surface 31 and the limiting boss 211 to the hole area of ​​the second connecting hole 21 is greater than or equal to 0.4 and less than or equal to 0.7. If the ratio is less than 0.4, it indicates that the contact area between the first mating step surface 31 and the limiting boss 211 is small, resulting in a weak pressing effect on the anti-collision sleeve 20, which may easily lead to the anti-collision sleeve 20 detaching from the connector 30. If the ratio is greater than 0.7, it may result in a strong pressing effect of the first mating step surface 31 on the anti-collision sleeve 20, which is detrimental to structural design and may also lead to poor structural strength in the part of the connector that passes through the second connecting hole 21, posing a risk of breakage and affecting the stability of use.

[0046] In some alternative embodiments, please refer to Figure 4The anti-collision sleeve 20 has a supporting boss 22 extending towards the cylinder head 10 on its side surface. A second connecting hole 21 passes through the supporting boss 22, and the top surface 221 of the supporting boss 22 abuts against the cylinder head 10, with the top surface 221 surrounding the first connecting hole 11. The addition of the supporting boss 22 on the side of the anti-collision sleeve 20 facing the cylinder head 10, and the second connecting hole 21 passing through the center of the supporting boss 22, ensures the accurate positioning of the connector 30. The top surface 221 of the support boss 22 directly contacts the cylinder head 10, forming a stable support. This not only enhances the stability of the anti-collision sleeve 20, but also strengthens the mechanical connection between the anti-collision sleeve 20 and the cylinder head 10 by utilizing the support boss 22. At the same time, the introduction of the support boss 22 increases the number and area of ​​contact points, making the overall force more balanced, further improving the anti-collision effect and fixing reliability. This effectively reduces the vibration amplitude of the core during vehicle operation, reduces noise and potential damage caused by metal collisions, and thus extends the service life of the compressor, ensuring the smooth and quiet operation of the vehicle refrigerator.

[0047] In addition, the support boss 22 helps to improve the structural strength of the anti-collision sleeve 20 and prevents the anti-collision sleeve 20 from undergoing large deformation when subjected to large compressive force, which would affect the cylinder head 10.

[0048] In some alternative embodiments, please refer to Figure 1The cylinder head 10 has a recessed groove 12 on its wall surface. A first connecting hole 11 is located on the bottom surface of the recessed groove 12. The top surface 221 of the supporting boss 22 abuts against the bottom surface of the recessed groove 12, and a portion of the side surface 222 of the supporting boss 22 abuts against a portion of the side wall of the recessed groove 12. This design aims to enhance the connection stability between the anti-collision limiting structure and the cylinder head 10. Through the precise cooperation between the supporting boss 22 and the recessed groove 12, effective control of compressor core vibration is achieved, avoiding metal component collisions and noise that may be caused by excessive displacement of the core. Meanwhile, the arrangement of the clearance groove 12 and the supporting boss 22 also provides initial positioning and engagement for the anti-collision sleeve 20 and the cylinder head 10, enabling them to be quickly assembled together. In this way, the anti-collision limiting structure not only reduces vibration and noise but also optimizes the assembly process, improving the stability and service life of the entire compressor system. Of course, in other embodiments not shown, the position and shape of the clearance groove can be adjusted according to specific application requirements to accommodate cylinder heads of different sizes or shapes, ensuring optimal fit between the anti-collision limiting structure and the cylinder head. This adjustability further enhances the adaptability and practicality of this embodiment in different automotive refrigerator compressor applications.

[0049] In some alternative embodiments, please refer to Figure 1The anti-collision sleeve 20 has a front anti-collision surface 26 on the surface opposite to the cylinder head 10. The front anti-collision surface 26 is located on the front side of the front sidewall of the cylinder head 10. The front anti-collision surface 26 has a second connecting hole 21. The nut section 34 of the connector 30 is located in the second connecting hole 21, and the distance L5 between the nut section 34 and the front anti-collision surface 26 is greater than or equal to 1 mm and less than or equal to 3 mm. The core of this design is to ensure that when the compressor housing vibrates or is impacted, it first contacts the front anti-collision surface 26 of the anti-collision sleeve 20, rather than directly impacting the nut section 34, by adjusting the distance between the nut section 34 and the front anti-collision surface 26. This effectively avoids the direct transmission of force and reduces the risk of damage to the cylinder head 10. During compressor operation, especially during vehicle travel, slight displacement of the outer casing is first absorbed by the anti-collision sleeve 20, rather than directly acting on the connecting part 30. This protects the cylinder head 10 from direct impact, reduces hard contact between metal parts, effectively reduces the generation of metal debris, and avoids additional wear on internal moving parts of the compressor. Furthermore, this distance of 1 mm to 3 mm provides necessary space for the elastic deformation of the anti-collision sleeve 20, allowing it to better perform its buffering function when absorbing impacts, further reducing the adverse effects of vibration on the entire compressor structure and improving the compressor's stability and service life. In alternative embodiments, this distance is not unique; for example, the same buffering effect can be achieved by adjusting the size of the nut section 34 or changing the material properties of the anti-collision sleeve 20. As long as an effective buffer area is formed between the compressor casing and the cylinder head 10, the specific implementation details can be flexibly adjusted to adapt to different compressor design and manufacturing requirements.

[0050] It should be noted that the distance between the nut section 34 and the front anti-collision surface 26 is greater than or equal to 1 mm and less than or equal to 3 mm, which means that the minimum distance between the nut section 34 and the front anti-collision surface 26 is greater than or equal to 1 mm and less than or equal to 3 mm.

[0051] In some alternative embodiments, the surface fit gap between the anti-collision sleeve 20 and the cylinder head 10 is less than or equal to 0.1 mm. This precise fit gap design aims to ensure that the anti-collision sleeve 20 is tightly attached to the surface of the cylinder head 10, reducing relative displacement during vehicle operation, thereby effectively suppressing the impact between the compressor core and the housing, and reducing the resulting noise and vibration. By limiting the gap to the micrometer level, this solution also enhances the sealing between the cylinder head 10 and the anti-collision sleeve 20, preventing external impurities and dust from entering the compressor interior, ensuring the safety and stability of the compressor core operation. In addition, the tiny fit gap helps improve the overall assembly precision of the compressor, reducing energy loss due to excessive gaps between components, thereby improving the energy efficiency ratio. In summary, this design not only effectively reduces vibration and noise but also optimizes the sealing and assembly performance of the compressor, providing users with a quieter, more efficient, and reliable in-vehicle refrigerator compressor experience.

[0052] It should be noted that the surface contact gap between the anti-collision sleeve 20 and the cylinder head 10 is less than or equal to 0.1 mm, which means that the maximum contact gap between the two is less than or equal to 0.1 mm.

[0053] In some alternative embodiments, please refer to Figure 4 The anti-collision sleeve 20, on its side surface facing the cylinder head 10, includes a front contact surface 23, a top contact surface 24, and two side contact surfaces 25. The front contact surface 23 is in contact with the front sidewall of the cylinder head 10. The top contact surface 24 is located above the front contact surface 23 and is connected to the front contact surface 23 via a curved transition. The top contact surface 24 is in contact with the top wall of the cylinder head 10. The two side contact surfaces 25 are located on opposite sides of the front contact surface 23 and the top contact surface 24, and are connected to both the front contact surface 23 and the top contact surface 24 via curved transitions to form a covering structure. In this embodiment, the anti-collision sleeve 20, on its side surface facing the cylinder head 10, includes multiple key contact surfaces designed to provide comprehensive protection and effective restraint. Specifically, the front contact surface 23 is directly and tightly fitted to the front sidewall of the cylinder head 10, while the top contact surface 24 is located above the front contact surface 23, smoothly connected by a curved transition to ensure seamless connection with the top wall of the cylinder head 10. Furthermore, two side contact surfaces 25 are respectively located on either side of the front contact surface 23 and the top contact surface 24, also connected to them by curved transitions, forming a unified, encapsulated structure. This design not only maximizes the contact area between the anti-collision sleeve 20 and the cylinder head 10, enhancing the stability of the anti-collision structure, but also effectively disperses impact force through curved transitions, reducing the possibility of hard contact between metal components, thereby reducing impact noise and preventing the generation of metal debris. Simultaneously, the precise fit between each contact surface and the cylinder head 10 ensures the reliability and safety of the compressor in complex operating environments, improving overall service life and user satisfaction. In other embodiments not shown, the contact surfaces of the anti-collision sleeve can also be adjusted to curved surfaces according to actual conditions to adapt to different geometries, or a more precise pressure distribution and limiting effect can be achieved by horizontally moving the anti-collision sleeve.

[0054] In some alternative embodiments, please refer to Figure 2 and Figure 3 The surface of the anti-collision sleeve 20 facing away from the cylinder head 10 includes a front anti-collision surface 26, a top anti-collision surface 27, and two side anti-collision surfaces 28. The front anti-collision surface 26 is arranged opposite to the front contact surface 23, the top contact surface 24 is arranged opposite to the top anti-collision surface 27, and the side anti-collision surfaces 28 are arranged opposite to the side contact surface 25, so that the surface of the anti-collision sleeve 20 facing away from the cylinder head 10 first contacts the outer shell, thereby preventing impact on the cylinder head 10 and thus preventing impact on the movement mechanism.

[0055] In some alternative embodiments, a portion of the second connecting hole 21 is formed on the front bumper surface 26, and another portion is formed on the connecting curved surface between the front bumper surface 26 and the side bumper surface 28. The nut section 34 of the connector 30 is located inside the second connecting hole 21 and the connector 30 is located in the area between the front bumper surface 26 and the cylinder head 10, so that the connector 30 is hidden inside the second connecting hole 21.

[0056] In some alternative embodiments, please refer to Figure 1 The length L1 of the anti-collision sleeve 20 in the vertical direction is greater than the length L2 of the anti-collision sleeve 20 in the front-rear direction. The front-rear direction refers to the arrangement direction of the cylinder block 40 and the crankcase, and the vertical direction is the direction perpendicular to the plane where the compressor is placed. This design allows the anti-collision sleeve 20 to cover a larger area of ​​the front side of the cylinder head 10, thus providing better protection for the front side of the cylinder head 10. At the same time, the length L2 of the anti-collision sleeve 20 in the front-rear direction is designed to be smaller, so that the anti-collision sleeve 20 can not only prevent the cylinder head 10 from being impacted, but also facilitates the miniaturization of the anti-collision sleeve 20, allowing it to be stably installed on the cylinder head 10 by means of the connecting piece 30 alone.

[0057] In some alternative embodiments, a compressor for a vehicle refrigerator is also provided, which includes the aforementioned compressor anti-collision structure. The aforementioned compressor anti-collision structure is mounted on the cylinder block 40, aiming to solve the noise problem caused by metal collision of the cylinder head during vehicle driving vibrations, as well as the technical difficulties of the anti-collision structure easily detaching and metal debris causing the mechanism to jam. The core of this solution lies in the coordinated design of the cylinder head 10 and the anti-collision sleeve 20, and the precise fit of the connector 30. The first connecting hole 11 on the cylinder head 10 and the limiting boss 211 provided in the second connecting hole 21 on the anti-collision sleeve 20 work together. Through the contact between the first mating step surface 31 of the connector 30 and the limiting boss 211, and the connection between the cylinder head 10 and the connector 30, the compressor cylinder head assembly is stably limited. This design ensures that even when encountering bumps or impacts during vehicle driving, the anti-collision sleeve 20 can effectively absorb external impact forces through the elasticity of the material itself, reducing the vibration amplitude of the mechanism and avoiding direct contact and wear of metal parts. Meanwhile, the limiting effect between the connector 30 and the anti-collision sleeve 20 prevents the anti-collision structure from loosening and falling off under high-intensity vibration, ensuring the stability and safety of the compressor's internal structure. This limits the vibration amplitude of the compressor core to within 3mm, effectively reducing metal debris generated by collisions and preventing core jamming caused by debris mixing into the lubricating oil. This improves the overall operational reliability and service life of the compressor, providing a more stable and low-noise compressor refrigeration solution for vehicle refrigerators. The application of this technology significantly reduces the noise generated by the compressor due to vibration and collisions under complex driving conditions, while effectively protecting the compressor core from damage and enhancing its stable operation.

[0058] When the compressor is in the vehicle's driving environment, the synergistic effect between the cylinder head 10 and the anti-collision sleeve 20 immediately becomes apparent. First, the connector 30, through its first mating step surface 31, makes tight contact with the limiting boss 211 in the second connecting hole 21, ensuring the anti-collision sleeve 20's stable position on the cylinder head 10. Simultaneously, the cylinder head 10 and connector 30 are connected, forming an axially fixed structure that limits the vibration amplitude of the connector 30 and reduces the impact of connector 30 vibration on the cylinder head 10. When the compressor encounters external impact or vibration, the polymer elastomer material of the anti-collision sleeve 20 absorbs the impact energy through its own deformation, reducing the vibration directly transmitted to the compressor core and preventing direct collisions between metal components. Furthermore, the anti-collision sleeve 20 has a supporting boss 22 on the side facing the cylinder head 10. The second connecting hole 21 passes through the supporting boss 22, and the top surface 221 of the boss abuts against the cylinder head 10. The top surface 221 of the boss surrounds the first connecting hole 11, further enhancing the connection stability and positioning accuracy between the anti-collision sleeve 20 and the cylinder head 10. During operation, the clearance groove 12 of the cylinder head 10 contacts the side of the supporting boss 22, and the nut section 34 maintains a distance of greater than or equal to 1 mm from the surface of the anti-collision sleeve 20. These design details work together to ensure that the compressor anti-collision structure can effectively reduce vibration and noise when facing various operating conditions during vehicle operation, protect the internal components of the compressor from damage, extend its service life, reduce operating noise, and improve the user experience. The anti-collision sleeve 20, comprising a front contact surface 23, a top contact surface 24, and two side contact surfaces 25, achieves more efficient vibration energy absorption and conversion through seamless contact with the cylinder head 10 surface. This avoids direct impact between metal parts, reduces noise, and ensures the smooth and reliable operation of the compressor. Overall, this anti-collision structure, through the synergistic effect of materials and structure, effectively improves the operational stability and service life of the vehicle refrigerator compressor under complex driving conditions, while reducing noise and providing a quieter and more durable user experience.

[0059] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0060] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0061] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0062] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any 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 compressor anti-collision structure, characterized in that, The compressor anti-collision structure is disposed on the cylinder body (40), and the compressor anti-collision structure includes: Cylinder head (10), the cylinder head (10) having at least one first connection hole (11); Anti-collision sleeve (20), the anti-collision sleeve (20) is sleeved on the cylinder head (10), and the anti-collision sleeve (20) covers at least a portion of the front side wall and the circumferential side wall of the cylinder head (10). The anti-collision sleeve (20) has at least one second connecting hole (21), and the second connecting hole (21) has a limiting boss (211). At least one connector (30) is provided in the first connecting hole (11) and the second connecting hole (21), the connector (30) has a first mating step surface (31), the first mating step surface (31) abuts against the limiting boss (211), and the connector (30) is connected to the cylinder head (10). The side of the cylinder block (40) that faces away from the crankcase is the front side.

2. The compressor anti-collision structure according to claim 1, characterized in that, The area of ​​the second connecting hole (21) is larger than that of the first connecting hole (11). The connector (30) also has a second mating step surface (33), which abuts against the wall surface of the cylinder head (10) exposed in the second connecting hole (21).

3. The compressor anti-collision structure according to claim 2, characterized in that, The connector (30) includes a nut section (34), a first connecting section (35), a second connecting section (36), and a third connecting section (37) connected in sequence, wherein, The outer diameter of the first connecting segment (35) is smaller than the outer diameter of the nut segment (34), and the connection between the first connecting segment (35) and the nut segment (34) forms the first mating step surface (31). The outer diameter of the second connecting segment (36) is smaller than the outer diameter of the first connecting segment (35), and the connection between the second connecting segment (36) and the first connecting segment (35) forms the second mating step surface (33). The third connecting section (37) is connected to the cylinder head (10).

4. The compressor anti-collision structure according to claim 3, characterized in that, The length L3 of the first connecting segment (35) and the hole depth H1 of the second connecting hole (21) satisfy the following condition: 0.5≤L3 / H1≤0.

8.

5. The compressor anti-collision structure according to claim 2, characterized in that, The ratio of the contact area between the second mating step surface (33) and the exposed wall surface of the cylinder head (10) within the second connecting hole (21) to the hole area of ​​the first connecting hole (11) is greater than or equal to 0.6 and less than or equal to 0.9; and / or The ratio of the contact area between the first mating step surface (31) and the limiting boss (211) to the hole area of ​​the second connecting hole (21) is greater than or equal to 0.4 and less than or equal to 0.

7.

6. The compressor anti-collision structure according to claim 1, characterized in that, The anti-collision sleeve (20) has a support boss (22) extending toward the cylinder head (10) on one side surface facing the cylinder head (10). The second connecting hole (21) passes through the support boss (22). The top surface (221) of the support boss (22) abuts against the cylinder head (10), and the top surface (221) surrounds the first connecting hole (11).

7. The compressor anti-collision structure according to claim 6, characterized in that, The cylinder head (10) has a relief groove (12) on its wall surface. The first connecting hole (11) is located on the bottom surface of the relief groove (12). The top surface (221) of the support boss (22) abuts against the bottom surface of the relief groove (12). Part of the side surface of the support boss (22) abuts against part of the side wall of the relief groove (12).

8. The compressor anti-collision structure according to claim 1, characterized in that, The anti-collision sleeve (20) has a front anti-collision surface (26) on the surface away from the cylinder head (10). The front anti-collision surface (26) is located on the front side of the front sidewall of the cylinder head (10). The front anti-collision surface (26) has a second connecting hole (21). The nut section (34) of the connector (30) is located in the second connecting hole (21), and the distance L5 between the nut section (34) and the front anti-collision surface (26) is greater than or equal to 1 mm and less than or equal to 3 mm.

9. The compressor anti-collision structure according to any one of claims 1 to 8, characterized in that, The gap between the anti-collision sleeve (20) and the surface of the cylinder head (10) is less than or equal to 0.1 mm.

10. The compressor anti-collision structure according to any one of claims 1 to 8, characterized in that, The surface of the anti-collision sleeve (20) facing the cylinder head (10) includes: The front contact surface (23) is in contact with the front side wall of the cylinder head (10); The top bonding surface (24) is located on the upper side of the front bonding surface (23) and is connected to the front bonding surface (23) through a curved transition. The top bonding surface (24) is bonded to the top wall of the cylinder head (10). Two side bonding surfaces (25) are located on opposite sides of the front bonding surface (23) and the top bonding surface (24), respectively, and are connected to the front bonding surface (23) and the top bonding surface (24) through curved transition to form a covering structure.

11. The compressor anti-collision structure according to any one of claims 1 to 8, characterized in that, The length L1 of the anti-collision sleeve (20) in the vertical direction is greater than the length L2 of the anti-collision sleeve (20) in the front-back direction. The front-back direction refers to the arrangement direction of the cylinder (40) and the crankcase, and the vertical direction is the direction perpendicular to the plane where the compressor is placed.

12. A compressor for a vehicle-mounted refrigerator, characterized in that, The compressor anti-collision structure includes any one of claims 1 to 11.

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