Air compressor

Abstract

The utility model provides an air compressor which comprises an air reservoir, a motor and a piston mechanism. The air reservoir has an air inlet and an air outlet. The piston mechanism is arranged in the air cylinder and comprises an air cylinder and a piston. The cylinder is provided with a front end and a rear end which are opposite, the front end is adjacent to the air inlet, and the piston is movably arranged in the cylinder and protrudes from the rear end to be coupled to the motor. The motor is suitable for driving the piston to reciprocate along the cylinder so as to drive air to sequentially pass through the air inlet, the front end, the rear end and the air outlet. Therefore, according to the air compressor, the size of the air compressor can be reduced, noise of the piston mechanism is lowered, enough heat dissipation area is provided for the piston mechanism, and the piston mechanism is well protected.

Description

Technical Field

[0001] The utility model relates to an air compressor, and particularly to a piston type air compressor. Background Art

[0002] A vehicle-mounted air compressor can be paired with a tire repair glue bottle to repair and inflate the tires of a vehicle, and can also inflate the tires of a vehicle without being paired with a tire repair glue bottle. The air compressor can be a piston type air compressor. In a general piston type air compressor, a piston advances in a cylinder to compress the air in the cylinder, and then the high-pressure air flows from the front end of the cylinder to a storage cylinder and is output. When the piston retreats in the cylinder, the space in the cylinder gradually becomes larger, causing the air pressure inside to drop, and it is compressed during the next forward movement of the piston, cycling continuously in this way.

[0003] Existing piston type air compressors have the following technical problems. The storage cylinder and the piston mechanism including the piston and the cylinder each occupy a configuration space in the piston type air compressor, making it difficult to reduce the volume of the piston type air compressor. In addition, the noise generated when the piston mechanism operates is too large, which easily affects the user experience of consumers. Moreover, in the limited configuration space of the piston type air compressor, it is difficult to provide sufficient heat dissipation area to dissipate heat from the piston mechanism, and it is also difficult to protect the piston mechanism from impact damage through sufficient protection structures. Summary of the Utility Model

[0004] The utility model aims at an air compressor, which can reduce the volume of the air compressor, reduce the noise of the piston mechanism, provide sufficient heat dissipation area for the piston mechanism, and protect the piston mechanism well.

[0005] According to an embodiment of the utility model, the air compressor includes a storage cylinder, a motor and a piston mechanism. The storage cylinder has an air inlet and an air outlet. The piston mechanism is disposed in the storage cylinder and includes a cylinder and a piston. The cylinder has opposite front and rear ends, the front end is adjacent to the air inlet, and the piston is movably disposed in the cylinder and protrudes from the rear end and is coupled to the motor. The motor is adapted to drive the piston to reciprocate in the cylinder to drive air to sequentially pass through the air inlet, the front end, the rear end and the air outlet.

[0006] In an embodiment according to the utility model, the piston includes a piston head and a piston rod connected to each other. The piston head divides the interior of the cylinder into a first space and a second space. The first space is located between the front end and the piston head, and the second space is located between the piston head and the rear end. The piston rod is coupled to the motor.

[0007] In an embodiment of the utility model, when the motor drives the piston head to move towards the rear end, causing the air pressure in the first space to be less than the air pressure outside the storage cylinder, the air outside the storage cylinder flows through the air inlet to the first space.

[0008] In an embodiment of the present utility model, the above-mentioned air compressor further includes a check valve, wherein the check valve is disposed at the air inlet, and the check valve allows the air outside the air storage cylinder to flow through the air inlet to the first space and prevents the air in the first space from flowing through the air inlet to the outside of the air storage cylinder.

[0009] In an embodiment of the present utility model, the above-mentioned piston head has an opening. When the motor drives the piston head to move forward and the air pressure in the first space is greater than the air pressure in the second space, the air in the first space flows through the opening to the second space.

[0010] In an embodiment of the present utility model, the above-mentioned air compressor further includes a check valve, wherein the check valve is disposed at the opening, and the check valve allows the air in the first space to flow through the opening to the second space and prevents the air in the second space from flowing through the opening to the first space.

[0011] In an embodiment of the present utility model, the above-mentioned air compressor further includes a pressure gauge, wherein the pressure gauge is communicated with the air storage cylinder.

[0012] In an embodiment of the present utility model, the above-mentioned air compressor further includes an air outlet pipe, wherein the air outlet pipe is located outside the air storage cylinder and is connected to the air outlet.

[0013] In an embodiment of the present utility model, the above-mentioned air compressor further includes a housing, wherein the housing accommodates the air storage cylinder, the piston mechanism and the motor, and the air outlet pipe extends outside the housing.

[0014] In an embodiment of the present utility model, the above-mentioned air storage cylinder includes a first shell part and a second shell part, and the second shell part is joined to the first shell part to hide the piston mechanism between the first shell part and the second shell part.

[0015] Based on the above, in the air compressor of the present utility model, the piston mechanism is disposed inside the air storage cylinder. Accordingly, the piston mechanism does not occupy the arrangement space outside the air storage cylinder, and the volume of the air compressor can be reduced. In addition, the noise generated during the operation of the piston mechanism is enclosed inside the air storage cylinder, and the noise of the piston mechanism can be reduced. Further, the heat generated during the operation of the piston mechanism diffuses inside the air storage cylinder and can be dissipated through the sufficiently large outer surface of the air storage cylinder. Moreover, the piston mechanism is located inside the air storage cylinder and can be well protected from collision damage. Description of the Drawings

[0016] Figure 1 is a perspective view of an air compressor according to an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a perspective view of some components of the air compressor;

[0018] Figure 3 isFigure 2 Stereogram of the air compressor from another perspective;

[0019] Figure 4 is Figure 2 Stereogram of some components of the air compressor;

[0020] Figure 5 is Figure 4 Stereogram of some components of the air compressor;

[0021] Figure 6 is Figure 5 Stereogram of the partial structure of the air storage tank and some components of the piston mechanism;

[0022] Figure 7 is Figure 6 Stereogram of the cylinder and piston;

[0023] Figure 8 is Figure 7 Stereogram of the cylinder and piston from another perspective;

[0024] Figure 9 is Figure 6 Stereogram of the partial structure of the air storage tank from another perspective;

[0025] Figure 10 is Figure 8 Stereogram of the piston. Detailed implementation mode

[0026] Now, reference will be made in detail to the exemplary embodiments of the present invention, and examples of the exemplary embodiments are illustrated in the accompanying drawings. Whenever possible, the same element symbols are used in the drawings and the description to represent the same or similar parts.

[0027] Figure 1 Stereogram of the air compressor according to an embodiment of the present invention. Figure 2 is Figure 1 Stereogram of some components of the air compressor. Figure 3 is Figure 2 Stereogram of the air compressor from another perspective.

[0028] Figure 4 is Figure 2 Stereogram of some components of the air compressor. Please refer to Figures 1 to 4, the air compressor 100 of the present embodiment is, for example, a vehicle-mounted air compressor for providing high-pressure air required for inflating and / or mending the tires of a vehicle. However, the present invention is not limited thereto. The air compressor 100 includes a housing 110, a storage cylinder 120, a piston mechanism 130, an air outlet pipe 140, and a motor 180. The housing 110 houses the storage cylinder 120, the piston mechanism 130, and the motor 180. The piston mechanism 130 is disposed within the storage cylinder 120 and includes a cylinder 132 and a piston 134. The storage cylinder 120 has an air inlet 120a and an air outlet 120b as Figure 2 and Figure 3 shown. The air outlet pipe 140 is located outside the storage cylinder 120 and is connected to the air outlet 120b. The air outlet pipe 140 extends outside the housing 110.

[0029] The cylinder 132 has opposite front end 132a and rear end 132b as Figure 4 shown. The front end 132a is adjacent to the air inlet 120a of the storage cylinder 120. The piston 134 is movably disposed within the cylinder 132 and protrudes from the rear end 132b of the cylinder 132 and is coupled to the motor 180. The motor 180 is adapted to drive the piston 134 to reciprocate within the cylinder 132 in directions D1 and D2 to drive air to sequentially pass through the air inlet 120a of the storage cylinder 120, the front end 132a of the cylinder 132, the rear end 132b of the cylinder 132, and the air outlet 120b of the storage cylinder 120, and is output via the air outlet pipe 140.

[0030] As described above, in the air compressor 100 of the present embodiment, the piston mechanism 130 is disposed within the storage cylinder 120. Accordingly, the piston mechanism 130 does not occupy the layout space outside the storage cylinder 120, and the volume of the air compressor 100 can be reduced. In addition, the noise generated when the piston mechanism 130 operates is enclosed within the storage cylinder 120, and the noise of the piston mechanism 130 can be reduced. Further, the heat generated when the piston mechanism 130 operates diffuses within the storage cylinder 120 and can be dissipated through the sufficiently large outer surface of the storage cylinder 120. Moreover, the piston mechanism 130 is located within the storage cylinder 120 and can be well protected from collision damage.

[0031] The operation mode of the air compressor 100 of the present embodiment will be described below.

[0032] Figure 5 is Figure 4 a perspective view of some components of the air compressor. Figure 6 is Figure 5 a perspective view of the partial structure of the storage cylinder and some components of the piston mechanism. Figure 7 is Figure 6 a perspective view of the cylinder and the piston. Figure 8 is Figure 7Stereogram of the cylinder and piston from another perspective. Please refer to Figures 5 to 8 , in this embodiment, the piston 134 includes a connected piston head 1341 and a piston rod 1342. The piston head 1341 divides the interior of the cylinder 132 into a first space S1 and a second space S2. The first space S1 is located between the front end 132a of the cylinder 132 and the piston head 1341, and the second space S2 is located between the piston head 1341 and the rear end 132b of the cylinder 132. The piston rod 1342 is coupled to the motor 180. In this embodiment, the piston rod 1342 is coupled to the motor 180 through a gear set G (marked in Figure 2 , Figure 4 and Figure 5 ) and other structures, and can swing by the drive of the motor 180, thereby driving the piston head 1341 to reciprocate along the cylinder 132. The reciprocating actuation method and principle of the piston 134 are known in the technical field and will not be elaborated here.

[0033] When the motor 180 drives the piston head 1341 to move towards the rear end 132b of the cylinder 132, the first space S1 expands, and the air pressure in the first space S1 becomes less than the air pressure outside the air storage cylinder 120. At this time, the air outside the air storage cylinder 120 flows into the first space S1 through the air inlet 120a of the air storage cylinder 120 due to the pressure difference between the first space S1 and the outside of the air storage cylinder 120. In addition, the piston head 1341 has an opening 1341a. When the motor 180 drives the piston head 1341 to move towards the front end 132a of the cylinder 132, the first space S1 shrinks, and the air pressure in the first space S1 becomes greater than the air pressure in the second space S2. At this time, the air in the first space S1 flows into the second space S2 through the opening 1341a due to the pressure difference between the first space S1 and the second space S2. By continuously circulating in this way, high-pressure air can be continuously output from the second space S2 to the air outlet 120b of the air storage cylinder 120 through the actuation of the piston mechanism 130.

[0034] Figure 9 is Figure 6 Stereogram of the partial structure of the air storage cylinder from another perspective. Figure 10 is Figure 8 Stereogram of the piston. Please refer to Figure 9 and Figure 10 , furthermore, the air compressor 100 of this embodiment further includes two one-way valves 150, 160. The one-way valve 150 is arranged at the air inlet 120a of the air storage cylinder 120 (shown in Figure 6 ), and the one-way valve 160 is arranged at the opening 1341a of the piston head 1341 (shown in Figure 7)。The one-way valve 150 allows the air outside the air storage cylinder 120 to flow into the first space S1 through the air inlet 120a of the air storage cylinder 120 and prevents the air in the first space S1 from flowing outside the air storage cylinder 120 through the air inlet 120a of the air storage cylinder 120. The one-way valve 160 allows the air in the first space S1 to flow into the second space S2 through the opening 1341a of the piston head 1341 and prevents the air in the second space S2 from flowing into the first space S1 through the opening 1341a of the piston head 1341. The detailed configuration and operation mode of the one-way valve are known in the technical field to which it belongs and will not be elaborated herein.

[0035] Please refer to Figure 1 and Figure 2 , in this embodiment, the air compressor 100 further includes a pressure gauge 170, which is connected to the air storage cylinder 120 and used to measure and display the air pressure in the air storage cylinder 120. The user can view the pressure value displayed by the pressure gauge 170 to know the pressure change of the air storage cylinder 120 during the operation of the piston mechanism 130. In addition, the air compressor 100 of this embodiment may further include a cooling fan 190 (labeled in Figures 1 to 5 ), the cooling fan 190 is connected to the motor 180 and driven by the motor 180, thereby generating a cooling air flow to dissipate heat from the piston mechanism 130 and the air storage cylinder 120.

[0036] Please refer to Figure 2 and Figure 4 , the air storage cylinder 120 of this embodiment includes a first shell portion 1201, a second shell portion 1202 and an end portion 1203. The second shell portion 1202 is joined to the first shell portion 1201 to hide the piston mechanism 130 between the first shell portion 1201 and the second shell portion 1202. The end portion 1203 is joined to the first shell portion 1201 and the second shell portion 1202, and the air inlet 120a is formed on the end portion 1203. In other embodiments, the air storage cylinder 120 may be composed in other appropriate ways, and the present invention does not limit this. In addition, the air outlet pipe 140 can be connected to any appropriate position on the outer surface of the air storage cylinder 120 according to the requirements of the configuration and design, and the present invention does not limit this.

[0037] In the foregoing embodiment, a sealing component may be provided between the first shell portion 1201, the second shell portion 1202, the end portion 1203, the cylinder 132 and between the first shell portion 1201 and the transmission shaft of the gear set G to prevent air leakage in the air storage cylinder 120. The specific type and setting method of the sealing component are known in the technical field to which it belongs and will not be elaborated herein.

[0038] In summary, in the air compressor of the present utility model, the piston mechanism is disposed within the air storage cylinder. Accordingly, the piston mechanism does not occupy the layout space outside the air storage cylinder, and the volume of the air compressor can be reduced. In addition, the noise generated during the operation of the piston mechanism is enclosed within the air storage cylinder, and the noise of the piston mechanism can be reduced. Moreover, the heat generated during the operation of the piston mechanism diffuses within the air storage cylinder and can be dissipated through the sufficiently large outer surface of the air storage cylinder. Furthermore, the piston mechanism is located within the air storage cylinder and can be well protected from collision damage. Also, the air outlet pipe can be connected to any position on the outer surface of the air storage cylinder, and there is greater freedom in the layout.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An air compressor, characterized in that, Comprising: An air storage tank having an air inlet and an air outlet; A motor; And A piston mechanism disposed within the air storage tank and including a cylinder and a piston, wherein the cylinder has opposite front and rear ends, the front end is adjacent to the air inlet, the piston is movably disposed within the cylinder and protrudes from the rear end and is coupled to the motor, Wherein the motor is adapted to drive the piston to reciprocate within the cylinder to drive air to sequentially pass through the air inlet, the front end, the rear end and the air outlet.

2. The air compressor according to claim 1, wherein The piston includes a piston head and a piston rod connected thereto, the piston head divides the interior of the cylinder into a first space and a second space, the first space is located between the front end and the piston head, the second space is located between the piston head and the rear end, and the piston rod is coupled to the motor.

3. The air compressor according to claim 2, characterized in that, When the motor drives the piston head to move towards the rear end such that the air pressure within the first space is less than the air pressure outside the air storage tank, air outside the air storage tank flows through the air inlet to the first space.

4. The air compressor according to claim 2, wherein It further includes a check valve, wherein the check valve is disposed at the air inlet, and the check valve allows air outside the air storage tank to flow through the air inlet to the first space and prevents air within the first space from flowing through the air inlet to outside the air storage tank.

5. The air compressor according to claim 2, characterized in that, The piston head has an opening, when the motor drives the piston head to move towards the front end such that the air pressure within the first space is greater than the air pressure within the second space, the air within the first space flows through the opening to the second space.

6. The air compressor according to claim 5, characterized in that, It further includes a check valve, wherein the check valve is disposed at the opening, and the check valve allows the air within the first space to flow through the opening to the second space and prevents the air within the second space from flowing through the opening to the first space.

7. The air compressor according to claim 1, wherein It further includes a pressure gauge, wherein the pressure gauge is communicated with the air storage tank.

8. The air compressor according to claim 1, wherein, It further includes an air outlet pipe, wherein the air outlet pipe is located outside the air storage tank and is connected to the air outlet.

9. The air compressor according to claim 8, wherein, It further includes a housing, wherein the housing houses the air storage tank, the piston mechanism and the motor, and the air outlet pipe extends outside the housing.

10. The air compressor according to claim 1, characterized in that, The air storage tank includes a first shell portion and a second shell portion, and the second shell portion is joined to the first shell portion to hide the piston mechanism between the first shell portion and the second shell portion.

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