A lightweight air compressor head

Abstract

This utility model relates to a lightweight air compressor head, comprising: a compressor head and a sealed quick-connect coupling; the compressor head is fixed above the compressor body by a cam clamping rod and is interconnected with the compressor body by the sealed quick-connect coupling; the sealed quick-connect coupling includes a male and a female connector, which are respectively connected to the compressor body and the compressor head, and are interlocked. This utility model, by setting up components such as the compressor body, compressor head, and sealed quick-connect coupling, allows for quick connection and disassembly between the compressor body and compressor head via the cam clamping rod, and the sealed quick-connect coupling allows for quick disconnection of the compressor body and compressor head, meaning the airflow between them is not connected. After the compressor head and compressor body are separated, they are easy to carry separately, thus achieving the effect of lightweight and easy portability.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, specifically to a lightweight air compressor head. Background Technology

[0002] An air compressor, also known as an air compressor, is a general-purpose mechanical device that compresses "normal pressure air" into "high pressure air" through mechanical work. Its core function is to provide compressed air (i.e., "air source") with a certain pressure and flow rate for industrial production and daily life scenarios (such as auto repair and spraying).

[0003] An air compressor typically consists of a compressor head and a casing. The compressor head is the power source for compressing air, which compresses the air by driving the rotor inside to produce high-pressure air. The casing usually serves as a support and stores the high-pressure air. After the compressor head produces high-pressure gas, it is transported to the interior of the casing through pipelines. A one-way valve is installed at the connection between the casing and the pipeline. The one-way valve prevents the high-pressure air inside the casing from flowing back. With the development of air compressors, lightweight air compressor heads are appearing more frequently on the market. Lightweight air compressors are more common in portable air compressors. Because lightweight air compressor heads are made of lighter materials and their size and weight are further reduced by integrating the air compressor head, lightweight air compressors are more portable. Compared to traditional air compressors, lightweight compressor heads are generally lighter, even though the weight of a lightweight compressor head is generally over 20kg. The compressor body, due to the need to store high-pressure gas, has a thicker inner wall, and its total weight is usually around 10-20kg. The weight of the compressor head and body is even greater for different models of air compressors. When workers move air compressors, the labor load is relatively large, making it inconvenient to move them. Therefore, a lightweight air compressor head is proposed to solve the above-mentioned problems. Utility Model Content

[0004] Based on the above description, this utility model provides a lightweight air compressor head to solve the problem that the total weight of the lightweight air compressor head is too large and inconvenient to transport when it is installed on the machine body.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A lightweight air compressor head, comprising: a compressor head and a sealed quick-connect coupling; The machine head is fixed to the top of the machine body by a cam clamping rod and is connected to the machine body by a sealed quick-connect coupling; The sealed quick-connector includes a male and a female connector, which are respectively connected to the machine body and the machine head, and are interlocked with each other.

[0006] Based on the above technical solution, the present invention can be further improved as follows.

[0007] Furthermore, the machine head includes a machine head body, and the output end of the machine head body is provided with a gas supply pipe. The gas supply pipe is connected to the machine body through a sealed quick-connect connector. A one-way valve is provided between the machine body and the sealed quick-connect connector to prevent the backflow of high-pressure gas stored inside the machine body. The machine body includes a storage tank, and the upper surface of the storage tank is provided with a mounting ear. The end of the mounting ear opposite to the storage tank is provided with a mounting opening.

[0008] Furthermore, a mounting bracket is provided on the lower surface of the machine head body. The end of the mounting bracket opposite to the machine head body is provided with a side opening. A cam clamping rod is hinged inside the side opening. The cam clamping rod passes through the mounting opening to connect the mounting ear and the mounting bracket.

[0009] Furthermore, the male connector includes a male connector with a first connecting tube at one end facing the machine body. An elastic sealing element is disposed inside the male connector, located between the first connecting tube and the male connector, and used to seal the male connector. The female connector includes a female connector with a second connecting tube at one end opposite to the male connector. An elastic sealing element is disposed inside the female connector, located between the second connecting tube and the female connector, and used to seal the female connector.

[0010] Furthermore, the male connector includes a first connector tube, on the outside of which a limiting sleeve, a snap-fit ​​sleeve, a mounting sleeve and an annular protrusion are sequentially arranged along the axial direction. The mounting sleeve has a sealing groove on its outside and an O-ring seal is arranged inside the sealing groove.

[0011] Furthermore, both ends of the annular protrusion are inclined surfaces, that is, the thickness of the outer ring of the annular protrusion is less than the thickness of its inner ring, and the end of the mounting sleeve facing the annular protrusion is an inclined side surface, which is symmetrical to its opposite inclined surface.

[0012] Furthermore, the female connector includes a main cylinder body, which is sleeved on the outside of the mounting sleeve, and has a snap-fit ​​groove and a spherical movable groove on its circumferential surface. The snap-fit ​​groove is provided with a snap ring inside, and the spherical movable groove is provided with a locking ball inside. The locking ball is engaged between the annular protrusion and the mounting sleeve.

[0013] Furthermore, a movable outer cylinder is sleeved on the outside of the main cylinder body. The movable outer cylinder includes a cylinder body, and an inner stop block is provided inside the cylinder body. The end of the inner stop block facing the first connecting pipe is in contact with the retaining ring, and a main spring is provided at the end facing away from the first connecting pipe. A limit block and a connecting cylinder are sequentially provided along the axial direction at the end of the main cylinder body facing away from the male connector. An annular groove is provided on the circumferential surface of the limit block. The end of the main spring facing away from the male connector is in contact with the end face of the limit block.

[0014] Furthermore, the elastic sealing component includes a limiting plate, a guide hole at the center of the limiting plate, and a connecting hole along the outer edge of the limiting plate. A guide rod is provided inside the guide hole, and the guide rod can move along the direction of the guide hole. A plug is provided at the end of the guide rod away from the limiting plate, and a plug sealing ring is sleeved on the outside of the plug. A secondary spring is provided at the end of the plug facing the limiting plate.

[0015] Furthermore, the male connector and the female connector are connected to each other by a limiting block. The limiting block includes two elastic clamps, which are respectively engaged with the outside of the snap-fit ​​sleeve and the annular groove. The two elastic clamps are connected to each other by a connecting block. The elastic clamps are used to limit the movement of the outer cylinder.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: 1. This utility model, by setting up components such as the body, the head, and the sealed quick-connect connector, allows the body and the head to be quickly connected and disassembled through the cam clamping rod. Furthermore, the sealed quick-connect connector allows the body and the head to be quickly disconnected, meaning that the airflow between the two is not connected. After the head and body are separated, they are easy to carry separately, thus achieving the effect of lightweight and easy to carry. 2. By designing the male and female connectors, they can be quickly connected and disconnected via a snap-fit ​​mechanism. During the quick-connect process, the two elastic sealing elements press against each other, allowing the male and female connectors to communicate with each other. Conversely, when the male and female connectors separate, the two elastic sealing elements separate, and the elastic sealing elements can seal the male and female connectors after separation. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of a lightweight air compressor head provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the fuselage structure in an embodiment of the present utility model; Figure 3This is a schematic diagram of the structure of the machine head and the sealed quick-connect coupling in the embodiment of this utility model; Figure 4 This is a cross-sectional view of the sealed quick-connect coupling in an embodiment of this utility model; Figure 5 for Figure 4 Another structural diagram from another perspective; Figure 6 This is a schematic diagram of the male connector in an embodiment of the present invention; Figure 7 This is a schematic diagram of the female connector in an embodiment of the present utility model; Figure 8 This is a schematic diagram of the retaining ring in an embodiment of the present invention; Figure 9 This is a schematic diagram of the limiting block in an embodiment of the present utility model; Figure 10 This is a schematic diagram of the structure of the elastic sealing element in the embodiment of this utility model; The attached diagram lists the components represented by each number as follows: 1. Body; 101. Storage tank; 102. Mounting ear; 103. Mounting opening; 2. Head; 21. Head body; 22. Gas supply pipe; 23. Mounting bracket; 24. Side opening; 25. Cam clamping rod; 3. First connecting pipe; 4. Male connector; 41. First connector pipe; 42. Annular protrusion; 43. Mounting sleeve; 44. Snap-fit ​​sleeve; 45. Limiting sleeve; 46. Sealing groove; 5. Female connector; 51. Main cylinder; 52. Snap-fit ​​groove; 53. Spherical movable part 54. Groove; 55. Annular groove; 56. Connecting cylinder; 57. Limiting block; 6. Second connecting pipe; 78. Movable outer cylinder; 79. Cylinder body; 70. Inner stop block; 8. Snap ring; 9. Main spring; 10. Positioning ball; 11. Limiting block; 111. Connecting block; 112. Elastic clamp; 12. Elastic sealing component; 121. Limiting plate; 122. Guide hole; 123. Connecting hole; 124. Guide rod; 125. Plug; 126. Plug sealing ring; 127. Secondary spring. Detailed Implementation

[0018] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0020] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0021] Please see Figures 1-3 as well as Figure 8 As shown, a lightweight air compressor head includes: a compressor head 2 and a sealed quick-connect coupling; The machine head 2 is fixed above the machine body 1 by a cam clamping rod 25 and is connected to the machine body 1 by a sealed quick connector; The sealed quick connector includes a male and a female connector, which are respectively connected to the machine body 1 and the machine head 2, and the male and female connectors are interlocked with each other. The machine head 2 includes a machine head body 21. The output end of the machine head body 21 is provided with a gas supply pipe 22. The gas supply pipe 22 is connected to the machine body 1 through a sealed quick-connect connector. A one-way valve is provided between the machine body 1 and the sealed quick-connect connector to prevent the backflow of high-pressure gas stored inside the machine body 1. The machine body 1 includes a storage tank 101. The upper surface of the storage tank 101 is provided with a mounting ear 102. The end of the mounting ear 102 facing away from the storage tank 101 is provided with a mounting opening 103. The lower surface of the machine head body 21 is provided with a mounting bracket 23. The end of the mounting bracket 23 away from the machine head body 21 is provided with a side opening 24. A cam clamping rod 25 is hinged inside the side opening 24. The cam clamping rod 25 passes through the mounting opening 103 and is used to connect the mounting ear 102 and the mounting bracket 23. Based on the above, the main body 21 processes the gas to generate high-pressure gas, which is then transported to the interior of the storage tank 101 through the gas delivery pipe 22. Simultaneously, the hinged cam clamping rod 25 can rotate, and after rotation... Figure 1As shown, it passes through the installation opening 103 and connects the machine head 2 and the machine body 1 through the clamping cam clamping rod 25. Since the cam clamping rod 25 is a mature existing technology, its specific working principle and structure are not described in detail here. The setting of the cam clamping rod 25 enables quick disassembly and quick assembly between the machine head 2 and the machine body 1. Furthermore, the installation of the ear 102, the installation opening 103, the mounting bracket 23, and the side opening 24 allows the cam clamping rod 25 to limit the movement of the machine head 2 and the machine body 1 when they are connected. That is, the machine head 2 and the machine body 1 cannot move laterally. Only when the cam clamping rod 25 rotates around the hinge point and faces upwards can the machine body 1 and the machine head 2 be separated.

[0022] like Figure 4 and Figure 5 As shown, the male connector includes a male connector 4, with a first connecting pipe 3 at one end of the male connector 4 facing the machine body 1. An elastic sealing element 12 is disposed inside the male connector 4, located between the first connecting pipe 3 and the male connector 4, and used to seal the male connector 4. The female connector includes a female connector 5, with a second connecting pipe 6 at one end of the female connector 5 away from the male connector 4. An elastic sealing element 12 is disposed inside the female connector 5, located between the second connecting pipe 6 and the female connector 5, and used to seal the female connector 5. Based on the above, the male and female connectors can be connected by a snap-fit ​​mechanism, and the elastic sealing member 12 can seal the male and female connectors respectively when they are separated to ensure their sealing state. Furthermore, the first connecting pipe 3 can limit the elastic sealing member 12 after it is connected to the male connector 4. At the same time, the second connecting pipe 6 and the female connector 5 can also limit the elastic sealing member 12 after they are connected to each other.

[0023] like Figure 6 As shown, the male connector 4 includes a first connector tube 41. The outer side of the first connector tube 41 is sequentially provided with a limiting sleeve 45, a snap-fit ​​sleeve 44, a mounting sleeve 43 and an annular protrusion 42 along the axial direction. The outer side of the mounting sleeve 43 is provided with a sealing groove 46, and the inner side of the sealing groove 46 is provided with an O-ring. Both ends of the annular protrusion 42 are inclined surfaces, that is, the thickness of the outer ring of the annular protrusion 42 is less than the thickness of its inner ring. The end of the mounting sleeve 43 facing the annular protrusion 42 is an inclined side, and the inclined side and its opposite inclined surface are symmetrical to each other. Based on the above, the O-ring seal allows the male and female connectors to be in a sealed state when they are engaged. The snap-fit ​​sleeve 44 allows the male connector 4 to engage with the elastic clamp 112. The mounting sleeve 43 and the annular protrusion 42 have inclined surfaces, which creates an angle between the contact surfaces of the mounting sleeve 43 and the annular protrusion 42. This allows the locking ball 10 to move radially along the male connector 4. The gap between the mounting sleeve 43 and the annular protrusion 42 allows the locking ball 10 to engage, thus connecting the male and female connectors through the locking ball 10.

[0024] like Figure 7 As shown, the female connector 5 includes a main cylinder 51, which is sleeved on the outside of the mounting sleeve 43. The main cylinder 51 has a snap-fit ​​groove 52 and a spherical movable groove 53 on its circumferential surface. A snap-fit ​​ring 8 is provided inside the snap-fit ​​groove 52, and a locking ball 10 is provided inside the spherical movable groove 53. The locking ball 10 is engaged between the annular protrusion 42 and the mounting sleeve 43. The main cylinder 51 is fitted with a movable outer cylinder 7. The movable outer cylinder 7 includes a cylinder body 71. An inner stop block 72 is provided inside the cylinder body 71. The end of the inner stop block 72 facing the first connecting pipe 3 is in contact with the retaining ring 8, and the end facing away from the first connecting pipe 3 is provided with a main spring 9. The end of the main cylinder 51 facing away from the male connector 4 is provided with a limit block 56 and a connecting cylinder 55 in sequence along the axial direction. An annular groove 54 is provided on the circumferential surface of the limit block 56. The end of the main spring 9 facing away from the male connector 4 is in contact with the end face of the limit block 56. Based on the above, after the female connector 5 is sleeved on the outside of the male connector 4, the locking ball 10 is inserted between the annular protrusion 42 and the mounting sleeve 43. During this process, the inner stop block 72 limits the locking ball 10, so that the locking ball 10 cannot move along the radial direction of the main cylinder 51, thus achieving the effect of connecting the female connector 5 and the male connector 4 with the locking ball 10. The setting of the limiting block 11 in the above process plays a role in fixing the movable outer cylinder 7, so that the movable outer cylinder 7 cannot move in the axial direction of the female connector 5, which further increases the stability of the connection between the female and male heads. In addition, after the retaining ring 8 is inserted into the retaining groove 52, it can limit the movable outer cylinder 7, preventing the movable outer cylinder 7 from separating from the male head after the male and female heads are separated.

[0025] like Figure 10As shown, the elastic sealing member 12 includes a limiting plate 121. A guide hole 122 is provided at the center of the limiting plate 121, and a connecting hole 123 is provided along the outer edge of the limiting plate 121. A guide rod 124 is provided inside the guide hole 122. The guide rod 124 can move along the direction of the guide hole 122. A plug 125 is provided at the end of the guide rod 124 away from the limiting plate 121. A plug sealing ring 126 is sleeved on the outside of the plug 125. A secondary spring 127 is provided at the end of the plug 125 facing the limiting plate 121. Based on the above, the guide hole 122 and the guide rod 124 cooperate with each other, so that the guide rod 124 can move along the direction of the guide hole 122, and the setting of the connecting hole 123 allows the airflow to flow through the limiting plate 121. The plug 125 can seal the male and female heads under the action of the spring force of the secondary spring 127, and the plug sealing ring 126 plays a role in increasing the sealing performance.

[0026] like Figure 9 As shown, the male connector 4 and the female connector 5 are connected to each other by a limiting block 11. The limiting block 11 includes two elastic clamps 112. The two elastic clamps 112 are respectively engaged with the outside of the snap sleeve 44 and the annular groove 54, and the two elastic clamps 112 are connected to each other by a connecting block 111. The elastic clamps 112 are used to limit the movement of the outer cylinder 7. Based on the above, the limiting block 11 serves two purposes: firstly, it connects the female and male heads, and secondly, it limits the movement of the outer cylinder 7, preventing it from moving along its axial direction. The limiting block 11 is connected to the female and male heads through the elastic clamp 112.

[0027] Installation process Initial connection: Place the head 2 above the body 1, align the side opening 24 on the mounting bracket 23 with the mounting ear 102 on the body 1, and align the male connector of the sealed quick-connect fitting with the body 1 and the female connector with the head 2 to ensure that they are coaxial.

[0028] Cam clamping and fixing: Rotate the cam clamping rod 25 so that it rotates around the pin and passes through the mounting opening 103 of the mounting ear 102. Continue to rotate the cam clamping rod 25 until the long diameter end of the cam contacts the mounting ear 102. At this time, the cam generates clamping force, which tightly fixes the mounting bracket 23 to the mounting ear 102, completing the mechanical connection between the machine head 2 and the machine body 1.

[0029] Quick-connect coupling engagement: Push the movable outer cylinder 7 towards the female head to compress the main spring 9, causing the inner stop block 72 to move away from the locking ball 10; insert the mounting sleeve 43 of the male connector 4 into the main cylinder 51 of the female connector 5 until the annular protrusion 42 contacts the locking ball 10; release the movable outer cylinder 7, the main spring 9 returns to its original position, push the inner stop block 72 to squeeze the locking ball 10, causing the locking ball 10 to engage in the gap between the annular protrusion 42 and the mounting sleeve 43, completing the initial engagement of the male and female heads; finally, engage the two elastic clamps 112 of the limiting clamp block 11 onto the clamping sleeve 44 and the annular groove 54 respectively, restricting the sliding of the movable outer cylinder 7 and locking the quick-connect coupling.

[0030] Air passage opening: During the docking process between the male and female connectors, the guide rods 124 of the two elastic sealing parts 12 come into contact with each other and squeeze, pushing the plug 125 to compress the secondary spring 127, so that the plug 125 separates from the sealing surfaces of the male connector 4 and the female connector 5, and the air passage is opened; at this time, the air compressor is started, and the high-pressure gas generated by the compressor body 21 can enter the storage tank 101 of the machine body 1 through the air delivery pipe 22 and the sealed quick-connect connector for storage.

[0031] Disassembly process Release the limit lock: Pry the elastic clamp 112 of the limit block 11 outward to disengage it from the locking sleeve 44 and the annular groove 54, and remove the limit block 11.

[0032] Separating the quick-connect coupling: Push the movable outer cylinder 7 to slide towards the female head, compress the main spring 9, and move the inner stop block 72 away from the locking ball 10, releasing the restriction on the locking ball 10; pull the male and female heads outward, and the inclined surface of the annular protrusion 42 pushes the locking ball 10 to move radially outward, disengaging from the gap between the annular protrusion 42 and the mounting sleeve 43, thus separating the male and female heads; after separation, the secondary spring 127 of the elastic sealing element 12 returns to its original position, pushing the plug 125 to press tightly against the sealing surface, sealing the male and female heads respectively, preventing gas leakage and impurities from entering.

[0033] Release the cam fixation: Rotate the cam clamping rod 25 in the reverse direction until it rotates around the pin until the short diameter end of the cam contacts the mounting ear 102. The clamping force will disappear. Remove the cam clamping rod 25 from the mounting opening 103 to release the mechanical fixation between the machine head 2 and the machine body 1.

[0034] Carry separately: The disassembled head 2 and body 1 are carried separately. Since the weight of both is controlled within 20kg (head about 18-20kg, body about 10-12kg), a single person can easily carry them, effectively reducing the labor load.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lightweight air compressor head, characterized by, include: The head (2) and the sealed quick-connect fitting; The machine head (2) is fixed above the machine body (1) by a cam clamping rod (25) and is connected to the machine body (1) by a sealed quick connector; The sealed quick connector includes a male and a female connector, which are respectively connected to the machine body (1) and the machine head (2), and are interlocked with each other.

2. The lightweight air compressor head of claim 1, wherein The machine head (2) includes a machine head body (21), and the output end of the machine head body (21) is provided with a gas supply pipe (22). The gas supply pipe (22) is connected to the machine body (1) through a sealed quick-connect connector. A one-way valve is provided between the machine body (1) and the sealed quick-connect connector to prevent the backflow of high-pressure gas stored inside the machine body (1). The machine body (1) includes a storage tank (101). The upper surface of the storage tank (101) is provided with a mounting ear (102). The end of the mounting ear (102) away from the storage tank (101) is provided with a mounting opening (103).

3. The lightweight air compressor head of claim 2, wherein, The lower surface of the head body (21) is provided with a mounting bracket (23). The mounting bracket (23) has a side opening (24) at one end away from the head body (21). A cam clamping rod (25) is hinged inside the side opening (24). The cam clamping rod (25) passes through the mounting opening (103) to connect the mounting ear (102) and the mounting bracket (23).

4. The lightweight air compressor head according to claim 1, characterized in that, The male connector includes a male connector (4), and a first connecting pipe (3) is provided at one end of the male connector (4) facing the body (1). An elastic sealing element (12) is provided inside the male connector (4). The elastic sealing element (12) is located between the first connecting pipe (3) and the male connector (4) and is used to seal the male connector (4). The female connector includes a female connector (5), and a second connecting pipe (6) is provided at one end of the female connector (5) away from the male connector (4). An elastic sealing element (12) is provided inside the female connector (5). The elastic sealing element (12) is located between the second connecting pipe (6) and the female connector (5) and is used to seal the female connector (5).

5. The lightweight air compressor head according to claim 4, characterized in that, The male connector (4) includes a first connector tube (41). The first connector tube (41) is provided with a limit sleeve (45), a snap sleeve (44), a mounting sleeve (43) and an annular protrusion (42) in sequence along the axial direction on the outside. The mounting sleeve (43) is provided with a sealing groove (46) on the outside. The sealing groove (46) is provided with an O-ring seal inside.

6. The lightweight air compressor head according to claim 5, characterized in that, Both ends of the annular protrusion (42) are inclined surfaces, that is, the thickness of the outer ring of the annular protrusion (42) is less than the thickness of its inner ring. The end of the mounting sleeve (43) facing the annular protrusion (42) is an inclined side surface, and the inclined side surface is symmetrical to its opposite inclined surface.

7. The lightweight air compressor head according to claim 6, characterized in that, The female connector (5) includes a main cylinder (51), which is sleeved on the outside of the mounting sleeve (43). The main cylinder (51) has a snap-fit ​​groove (52) and a spherical movable groove (53) on its circumferential surface. A snap-fit ​​ring (8) is provided inside the snap-fit ​​groove (52), and a locking ball (10) is provided inside the spherical movable groove (53). The locking ball (10) is engaged between the annular protrusion (42) and the mounting sleeve (43).

8. The lightweight air compressor head according to claim 7, characterized in that, The main cylinder (51) is fitted with a movable outer cylinder (7). The movable outer cylinder (7) includes a cylinder body (71). An inner stop block (72) is provided inside the cylinder body (71). The end of the inner stop block (72) facing the first connecting pipe (3) is in contact with the retaining ring (8), and the end away from the first connecting pipe (3) is provided with a main spring (9). The end of the main cylinder (51) away from the male connector (4) is provided with a limit block (56) and a connecting cylinder (55) in sequence along the axial direction. An annular groove (54) is provided on the circumferential surface of the limit block (56). The end of the main spring (9) away from the male connector (4) is in contact with the end face of the limit block (56).

9. The lightweight air compressor head according to claim 4, characterized in that, The elastic sealing component (12) includes a limiting plate (121), a guide hole (122) is provided at the center of the limiting plate (121), and a connecting hole (123) is provided along the outer edge of the limiting plate (121). A guide rod (124) is provided inside the guide hole (122), and the guide rod (124) can move along the direction of the guide hole (122). A plug (125) is provided at the end of the guide rod (124) away from the limiting plate (121). A plug sealing ring (126) is sleeved on the outside of the plug (125), and a secondary spring (127) is provided at the end of the plug (125) facing the limiting plate (121).

10. The lightweight air compressor head according to claim 8, characterized in that, The male connector (4) and the female connector (5) are connected to each other by a limiting block (11). The limiting block (11) includes two elastic clamps (112). The two elastic clamps (112) are respectively clamped to the outside of the clamp sleeve (44) and the annular groove (54), and the two elastic clamps (112) are connected to each other by a connecting block (111). The elastic clamps (112) are used to limit the movement of the outer cylinder (7).

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