Portable blowing and sucking dual-purpose air compressor
By designing a portable blow-sucking dual-purpose air compressor, the piston reciprocating movement and check valve generate a blow-sucking air flow, and the sealing is improved, the problem of insufficient portability and battery compatibility of the existing air compressor is solved, and the efficient inflation process and portability are achieved.
Patent Information
- Application Number
- CN202421694472.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-06-03
- Filing Date
- 2024-07-17
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-17
AI Technical Summary
The existing air compressors have shortcomings in portability and battery compatibility, and the inflation process only utilizes part of the piston stroke and cannot fully utilize the piston's sport pattern.
A portable blow-sucking dual-purpose air compressor is designed, which combines different check valves through the reciprocating movement of the piston to generate a blow-sucking air flow and ensures air tightness through the seal. The air compressor includes a motor, a piston, a seal, a cylinder, a first check stop and a second check valve. The second end of the piston abuts against the inner wall of the cylinder through a seal, forming a plurality of contact areas and grooves to improve airtightness.
The portability and dual-purpose functions of the air compressor are realized, the air tightness during piston movement is improved, and the efficiency and reliability of the inflation process are ensured.
Smart Images
Figure CN222991655U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an air compressor, in particular to a portable air compressor for blowing and sucking. Background Art
[0002] An air compressor is a device that can inflate items to be inflated. It is generally widely used for inflating air cushions and tires. In order to improve the portability of air compressors, in addition to trying to reduce their size, their power supply system must also be adjusted. For example, the original operation method that required cables to be fixed and plugged into an external power source was changed to an operation method that directly installed a battery on the air compressor.
[0003] However, due to the advancement of battery technology, there are concerns about the compatibility of new batteries with old devices, or old batteries with new devices.
[0004] Furthermore, the aforementioned inflation process is only a partial stroke of the piston of the air compressor, so as only an inflation device, it is obviously unable to demonstrate or utilize the movement pattern of its piston. Utility Model Content
[0005] The utility model provides an air compressor, which generates blowing and suction dual-purpose airflows through the reciprocating motion of a piston in combination with different check valves, and forms a plurality of contact areas with the surface of a component by a sealing element to ensure the air tightness of adjacent components.
[0006] The utility model discloses a portable air compressor for both blowing and sucking, comprising a motor, a piston, a seal, a cylinder, a first check valve and a second check valve. The piston has a first end and a second end opposite to each other, and the first end is connected to the motor. The seal is sleeved on the outer wall of the second end of the piston. The second end of the piston is movably coupled in the cylinder, and the second end abuts against the inner wall of the cylinder through the seal, wherein the cross section of the seal forms a plurality of contact areas with the inner wall and the outer wall respectively, and a groove is formed between two adjacent contact areas. The cylinder has an air inlet pipe and an air outlet pipe, which are connected to the internal space of the cylinder and the external environment respectively. The first check valve is arranged in the air outlet pipe, and the second check valve is arranged in the air inlet pipe. During the first stroke, the piston compresses the air in the cylinder, and the compressed air drives the first check valve to clear the passage of the air outlet pipe to allow the compressed air to enter the air outlet pipe, and the compressed air drives the second check valve to block the passage of the air inlet pipe. During the second stroke, the piston reduces the air pressure in the cylinder, and the compressed air in the outlet pipe or the air in the external environment drives the first check valve to block the passage of the outlet pipe. The air in the external environment or the air in the intake pipe drives the second check valve to clear the passage of the intake pipe so as to enter the cylinder through the intake pipe.
[0007] On the basis of the above necessary technical means, the sealing member is an X-shaped ring, and two contact areas are formed on the inner wall and the outer wall respectively, and a groove is located between the two contact areas.
[0008] On the basis of the above necessary technical means, it also includes lubricating oil, which is applied to the second end of the piston and the sealing member, and part of the lubricating oil is stored in the groove.
[0009] On the basis of the above necessary technical means, it also includes a main body, a motor, a piston, a seal, a cylinder, a first check valve and a second check valve are accommodated in the main body, an outlet pipe forms an outlet at the end away from the cylinder and a part of the main body, and an inlet pipe forms an inlet at the end away from the cylinder and another part of the main body.
[0010] On the basis of the above necessary technical means, it also includes a battery, which is pluggable and arranged in a slot on the outside of the main body.
[0011] On the basis of the above necessary technical means, it also includes a battery and an adapter. The adapter is pluggable in a slot on the outside of the main body, and the battery is pluggable in another slot of the adapter.
[0012] On the basis of the above necessary technical means, it also includes an adapter, which is pluggable and arranged in a slot on the outside of the main body, and the adapter is electrically connected to an external power supply through a cable.
[0013] On the basis of the above necessary technical means, the piston includes a rod, a disk and an elastic member, the rod has a first end, the disk has a second end, and the elastic member is connected between the rod and the disk.
[0014] On the basis of the above necessary technical means, the elastic member can be detachably fastened to at least one of the rod member and the disk member.
[0015] On the basis of the above necessary technical means, the elastic member includes a first elastic body and a second elastic body, which are respectively connected between the rod member and the disk member, and the elastic coefficient of the first elastic body and the elastic coefficient of the second elastic body are different from each other.
[0016] Based on the above, the air compressor utilizes the reciprocating motion of the piston in the cylinder, and is matched with the first check valve and the second check valve to produce the dual effects of blowing airflow and suction airflow in different pipelines. Furthermore, the seal is sleeved on the piston and abuts against the inner wall of the cylinder. Here, the cross section of the seal forms multiple contact areas with the aforementioned inner wall and the outer wall of the piston, and a groove is formed between two adjacent contact areas. In this way, the airtightness between the piston and the inner wall of the cylinder can be improved when the piston moves.
[0017] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic diagram of an air compressor according to an embodiment of the utility model;
[0019] Figure 2 yes Figure 1 An exploded schematic diagram of a main body of an air compressor;
[0020] Figure 3 yes Figure 2 Schematic diagram of the air compressor module;
[0021] Figure 4A and Figure 4B Different states of the air compressor module are shown respectively;
[0022] Figure 4C Show Figure 4A The air compression module is partially enlarged at the second end of the piston;
[0023] Figure 5A is a schematic diagram of a piston of another embodiment of the utility model;
[0024] Figure 5B Show Figure 5A Schematic diagram of the local state of different states;
[0025] Figures 6 to 8 They are schematic diagrams of pistons of different embodiments of the utility model;
[0026] Fig.9A and Fig. 9B A schematic diagram showing an air compressor according to another embodiment of the utility model from different viewing angles;
[0027] Fig.10 It is a schematic diagram of an air compressor according to another embodiment of the utility model. DETAILED DESCRIPTION
[0028] Figure 1 It is a schematic diagram of an air compressor according to an embodiment of the utility model. Figure 2 yes Figure 1 Please also refer to the exploded diagram of the main body of the air compressor. Figure 1 and Figure 2 In this embodiment, the air compressor includes a main body 10A and a battery 20, wherein the battery 20 is pluggable and inserted into a slot outside the main body 10A and electrically connected to the electronic module inside the main body 10A, so that the air compressor has portability without being limited to an external power source that needs to be connected at a fixed position. Figure 2As shown, the main body 10A includes a shell 13, 14, a circuit board 15, a partition 16 and an air compressor module 100, and these components are assembled together by a plurality of screws SC, wherein the cylinder 140 of the air compressor module 100 has an air inlet pipe 142 and an air outlet pipe 143 to facilitate forming an air inlet 12 and an air outlet 11 with the shell 13, 14.
[0029] Figure 3 yes Figure 2 Please refer to the exploded diagram of the air compressor module. Figure 3 In this embodiment, the air compressor module 100 includes a motor 110, a piston 120, a seal 130, a cylinder 140, a first check valve 151 and a second check valve 152. The piston 120 has a first end E1 and a second end E2 opposite to each other, and the first end E1 is connected to the motor 110 through a transmission mechanism. Here, the transmission mechanism includes a first gear TS1 and a second gear TS2, wherein the first gear TS1 is disposed on the motor 110, the second gear TS2 is pivoted on the bracket 144 of the cylinder 140, the second end E2 of the piston 120 is movably coupled in the cylinder 140, and the first end E1 of the piston 120 is pivoted at the eccentric position of the second gear TS2. The first gear TS1 passes through the bracket 144 and is meshed and coupled to the second gear TS2 because the motor 110 is assembled to the bracket 144. Accordingly, the motor 110 can smoothly drive the piston 120 to reciprocate relative to the cylinder 140 through the first gear TS1 and the second gear TS2.
[0030] Figure 4A and Figure 4B The following table shows the different states of the air compressor module. Some components are cut and omitted here to facilitate the identification of the corresponding relationship within the components. Please also refer to Figure 3 , Figure 4A and Figure 4B , the cylinder 140 includes a cylinder body 141, a bracket 144, an air inlet pipe 142 and an air outlet pipe 143, wherein the bracket 144, the air inlet pipe 142 and the air outlet pipe 143 extend from the cylinder body 141 respectively, and the air inlet pipe 142 and the air outlet pipe 143 are connected to the internal space of the cylinder 140 (i.e., the internal space of the cylinder body 141) and are respectively connected to the external environment. The air inlet pipe 142 includes pipe fittings A1, A2 and a quick connector A3, and the second check valve 152 is disposed between the pipe fittings A1, A2 and the two of the air inlet pipe 142. The air outlet pipe 143 includes pipe fittings B1, B2 and a quick connector B3, and the first check valve 151 is disposed in the pipe fitting B1 of the air outlet pipe 143. Corresponding to Figure 1 and Figure 2, the quick connector B3 forms the air outlet 11 of the main body 10A with the shells 13 and 14, and the quick connector A3 forms the air inlet 12 of the main body 10A with the shells 13 and 14. It should be mentioned that, based on the location of the cylinder body 141, the air outlet pipe 143 and the air inlet pipe 142 are respectively connected to the top 141b of the cylinder body 141, and the non-return airflow direction provided by the first non-return valve 151 and the non-return airflow direction provided by the second non-return valve 152 are opposite to each other, wherein the first non-return valve 151 is used to provide an air outlet direction and block the air inlet direction, and the second non-return valve 152 is used to provide an air inlet direction and block the air outlet direction.
[0031] In detail, Figure 4A The state of the piston 120 after the first stroke is shown. At this time, the second end E2 of the piston 120 moves toward the top 141b of the cylinder body 141 (which is equivalent to moving toward the air inlet pipe 142 and the air outlet pipe 143) and compresses the air inside the cylinder body 141. The compressed air will further drive the first check valve 151 to clear the passage of the air outlet pipe 143, so that the compressed air can enter the air outlet pipe 143 from the cylinder body 141. If an object is connected to the air outlet 11, the compressed air in the air outlet pipe 143 can be transmitted from the air outlet pipe 143 to the object to inflate the object. At the same time, the second check valve 152 in the air inlet pipe 142 is driven by the compressed air to block the passage of the air inlet pipe 142 to prevent the compressed air from being discharged from the air inlet pipe 142 (and the air inlet 12) out of the main body 10A of the air compressor.
[0032] on the other hand, Figure 4B The state after the piston 120 performs the second stroke is shown. At this time, the second end E2 of the piston 120 is away from the top 141b of the cylinder body 141, thereby reducing the air pressure in the cylinder body 141 and even generating a momentary vacuum state. At this time, for the air inlet pipe 142, the residual air in its passage is actually the same as the pressure of the external environment, and is obviously higher than the air pressure in the cylinder body 141, so the second check valve 152 will be further driven to clear the passage of the air inlet pipe 142, and allow the air from the external environment to enter the cylinder body 141 through the air inlet pipe 142. Relatively speaking, for the air outlet pipe 143, the pressure of the aforementioned residual compressed air is obviously higher than the air pressure in the cylinder body 141, so the first check valve 151 will be driven to block the air outlet pipe 143 to prevent the compressed air from flowing back into the cylinder body 141. In this way, the air compressor of this embodiment provides a suction effect when the piston 120 performs the second stroke, and produces a blowing effect during the first stroke. Therefore, when the piston 120 continues to reciprocate, the air compressor can provide both blowing and suction functions.
[0033] Figure 4C Show Figure 4AThe air compressor module is a partial enlargement of the second end of the piston. Please also refer to Figure 3 and Figure 4C In this embodiment, the seal 130 is sleeved on the outer wall 121 of the piston 120 at the second end E2, and the second end E2 of the piston 120 is abutted against the inner wall 141a of the cylinder body 141 through the seal 130, wherein the cross-section of the seal 130 forms a plurality of contact areas T1-T4 with the inner wall 141a and the outer wall 121 respectively, and grooves R1, R2 are formed between two adjacent contact areas T1, T2 or T3, T4.
[0034] In this embodiment, the seal 130 is an X-ring with an X-shaped cross section, and its two lips abut against the inner wall 141a of the cylinder body 141 to form two contact areas T1 and T2 on the inner wall 141a, and a groove R1 is formed between the contact areas T1 and T2. At the same time, its other two lips abut against the outer wall 121 of the piston 120 to form two contact areas T3 and T4 and a groove R2 located therebetween on the outer wall 121. Due to the multiple contact areas T1-T4, the seal 130 can provide a dual sealing function between the piston 120 and the cylinder body 141, and at the same time, the flexibility of its lips can reduce friction and wear. Furthermore, the air compressor also includes lubricating oil LO, which is applied to the second end E2 of the piston 120 and the seal 130, wherein part of the lubricating oil LO can be stored in the aforementioned grooves R1 and R2, thereby ensuring that when the piston 120 reciprocates, there is long-term lubrication and air tightness between the piston 120 and the inner wall 141a of the cylinder body 141.
[0035] Figure 5A It is a schematic diagram of a piston according to another embodiment of the utility model. Figure 5B Show Figure 5A It should be noted that, since only the piston structure is different from the previous embodiment, and the other components such as the cylinder are the same as the previous embodiment, the subsequent description is to match the drawings of this embodiment with the drawings of the previous embodiment.
[0036] Please also refer to Figure 5A and Figure 5BIn this embodiment, the piston 220 includes a rod 221, a disk 222 and an elastic member 223. The rod 221 is, for example, a local structure of the piston 120 having the first end E1, and the disk 222 is, for example, a local structure of the piston 120 having the second end E2, and the sealing member 130 is substantially sleeved on the disk 222. Different from the piston 120 of the aforementioned embodiment which is an integrally formed structure, the elastic member 223 is connected between the rod 221 and the disk 222 in this embodiment. In this way, the elastic member 223 can be used as a buffer structure between the disk 222 and the rod 221, which are rigid components, by virtue of the elasticity of the elastic member 223, which can be compressed by force or reset by its elastic force.
[0037] When the piston 220 performs the first stroke (eg Figure 4A As shown in FIG. 2 , the disk 222 is pushed by the compressed gas whose air pressure gradually increases, thereby compressing the elastic member 223. Figure 5B As shown, the gap G1 of the elastic member 223 is converted to the gap G2 and the elastic force is accumulated. When the piston 220 performs the second stroke (for example Figure 4B As shown in FIG. 1 , the air pressure in the cylinder body 141 is reduced, which also means that the force on the disc 222 is reduced, so the elastic member 223 is released and reset due to its elastic force. Accordingly, the elastic force accumulated by the elastic member 223 during the first stroke can be used to drive the disc 222 to reset during the second stroke, so as to avoid the sudden increase in air pressure caused by the residual compressed gas in the cylinder body 141 when the piston 220 stops moving and then restarts, or the sudden increase in air pressure caused by the compressed air in the outlet pipe 143 flowing back to the cylinder body 141 due to the leakage of the first check valve 151. The elastic member 223 can act as a buffer for the components, thereby preventing the aforementioned sudden increase in air pressure from causing load on the components or even causing damage to the components.
[0038] Figures 6 to 8 They are schematic diagrams of pistons of different embodiments of the present invention. Figure 6 , the piston 320 shown includes a rod 321, a disk 322 and an elastic member 323, and the elastic member 323 is detachably fastened to the rod 321 and the disk 322. In other words, the user can replace the elastic member 323 with different elastic coefficients according to needs.
[0039] In addition, Figure 7 As shown, the piston 420 includes a rod 421, a disk 422 and an elastic member 423, and the elastic member 423 includes an elastic portion 423a and a fixing portion 423b, wherein one end of the elastic portion 423a is integrally formed with the disk 422, and the other end of the elastic portion 423a is assembled to the rod 421 by the fixing portion 423b. The piston 420 of this embodiment provides an assembly structure and manufacturing method of the elastic member 423 different from the aforementioned.
[0040] In addition, Figure 8 As shown, the piston 520 includes a rod 521, a disk 522 and an elastic member 523, and the elastic member 523 includes a first elastic body 523a, a fixing portion 523b and a second elastic body 523c, wherein the opposite ends of the first elastic body 523a are respectively assembled to the disk 522 and the rod 521 through the fixing portion 523b, and the second elastic body 523c is further abutted against the inner side of the first elastic body 523a to be connected with the disk 522 and the rod 521. More importantly, the elastic coefficient of the first elastic body 523a and the elastic coefficient of the second elastic body 523c are different from each other. In this way, through the adjustment and matching of the first elastic body 523a and the second elastic body 523c, the elastic member 523 of this embodiment has a larger adaptation range and deformation tolerance.
[0041] Fig.9A and Fig. 9B Schematic diagram of an air compressor of another embodiment of the utility model is shown from different perspectives. Fig.9A and Fig. 9B , different from Figure 1 The main body 10A of the embodiment shown is directly equipped with the battery 20, while the air compressor of this embodiment is equipped with the adapter 30 and the battery 40 on the main body 10A. The reason is that with the advancement of battery technology, different styles or new and old styles are bound to face the situation where the size or specifications do not match and cannot be used. Therefore, in this embodiment, the adapter 30 is pluggable and inserted into the slot of the main body 10A, and then the battery 40 with different sizes or specifications from the aforementioned battery 20 can be used, thereby increasing the application range of the air compressor.
[0042] Fig.10 This is a schematic diagram of an air compressor according to another embodiment of the present invention. Fig.10 , different from Fig.9A and Fig. 9B The main body 10A is powered by a battery 40. In this embodiment, a connector 30A equipped with a cable is pluggable into a slot of the main body 10A, so that the main body 10A is powered from an external power source (not shown) through the connector 30A.
[0043] In summary, in the above embodiment of the utility model, the air compressor utilizes the reciprocating motion of the piston in the cylinder, and is matched with the first check valve and the second check valve to produce the dual effects of blowing airflow and suction airflow in different pipelines. Furthermore, the seal is sleeved on the piston and abuts against the inner wall of the cylinder. Here, the cross section of the seal forms a plurality of contact areas with the aforementioned inner wall and the outer wall of the piston, and a groove is formed between two adjacent contact areas. In this way, the airtightness between the piston and the inner wall of the cylinder can be improved when the piston moves.
[0044] Furthermore, the piston further configures an elastic member between its rod and the disk, which serves as a buffer structure between rigid components to prevent the sudden increase in air pressure from causing burden or even damage to the components. In addition, in addition to configuring batteries to increase its portability, the air compressor can also be adapted to batteries of different sizes or specifications through an adapter, and can also be used with an adapter with a cable to allow an external power source to power the main body of the air compressor.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A portable air compressor for blowing and suction, characterized in that: include: motor; a piston having a first end and a second end opposite to each other, wherein the first end is connected to the motor; A sealing member, sleeved on the outer wall of the piston at the second end; A cylinder, wherein the second end of the piston is movably coupled in the cylinder, and the second end abuts against the inner wall of the cylinder through the sealing member, wherein the cross section of the sealing member forms a plurality of contact areas with the inner wall and the outer wall respectively, and a groove is formed between two adjacent contact areas, and the cylinder has an air inlet pipe and an air outlet pipe, which are connected to the internal space of the cylinder and are respectively connected to the external environment; A first check valve is arranged in the air outlet pipe; as well as A second check valve is disposed in the intake pipe, The motor drives the piston to reciprocate in the cylinder. During the first stroke, the piston compresses the air in the cylinder, and the compressed air drives the first check valve to clear the passage of the air outlet pipe to enter the air outlet pipe, and the compressed air drives the second check valve to block the passage of the air inlet pipe. During the second stroke, the piston reduces the air pressure in the cylinder, and the compressed air in the outlet pipe or the air in the external environment drives the first check valve to block the passage of the outlet pipe, and the air in the external environment or the air in the intake pipe drives the second check valve to clear the passage of the intake pipe so as to enter the cylinder through the intake pipe.
2. The portable air compressor for blowing and sucking according to claim 1, characterized in that: The sealing member is an X-shaped ring, and forms two contact areas with the inner wall and the outer wall respectively, and the groove is located between the two contact areas.
3. The portable air compressor for blowing and sucking according to claim 1, characterized in that: The invention also includes lubricating oil applied to the second end of the piston and the sealing element, wherein a portion of the lubricating oil is stored in the groove.
4. The portable air compressor for blowing and sucking according to claim 1, characterized in that: It also includes a main body, in which the motor, the piston, the seal, the cylinder, the first check valve and the second check valve are accommodated, the air outlet pipe forms an air outlet at the end away from the cylinder and a part of the main body, and the air inlet pipe forms an air inlet at the end away from the cylinder and another part of the main body.
5. The portable air compressor for blowing and sucking according to claim 4, characterized in that: The utility model also comprises a battery which is pluggable and arranged in a slot outside the main body.
6. The portable air compressor for blowing and sucking according to claim 4, characterized in that: It also includes a battery and an adapter. The adapter is pluggable in a slot on the outside of the main body, and the battery is pluggable in another slot of the adapter.
7. The portable air compressor for blowing and sucking according to claim 4, characterized in that: It also includes an adapter, which is pluggably arranged in a slot outside the main body, and the adapter is electrically connected to an external power source through a cable.
8. The portable air compressor for blowing and sucking according to claim 1, characterized in that: The piston comprises a rod, a disk and an elastic member, the rod has the first end, the disk has the second end, and the elastic member is connected between the rod and the disk.
9. The portable air compressor for blowing and sucking according to claim 8, characterized in that: The elastic member is detachably fastened to at least one of the rod member and the disk member.
10. The portable air compressor for blowing and sucking according to claim 8, characterized in that: The elastic member includes a first elastic body and a second elastic body, which are respectively connected between the rod member and the disk member, and the elastic coefficient of the first elastic body and the elastic coefficient of the second elastic body are different from each other.