Piston guide mechanism of air compressor

Abstract

The utility model discloses a piston guide mechanism of an air compressor. The piston guide mechanism comprises a piston assembly and a guide assembly. The piston assembly comprises a piston, a cylinder body and an eccentric cam for driving the piston to do reciprocating motion along the inner wall of the cylinder body, the piston comprises a piston head part and a piston rod part, the piston head part is matched with the cylinder body, the piston rod part is provided with a mounting hole for accommodating the eccentric cam, and the two sides of the piston rod part are provided with parallel surfaces parallel to the motion direction of the piston head part; the guide assembly is located between the cylinder body and the eccentric cam and comprises guide rollers arranged on the two sides of the plug rod part, and the guide rollers are in rolling connection with the parallel face. The guide roller plays a guiding role, meanwhile, stress on the side face of the plug head part and the side face of the inner wall of the cylinder body in the reciprocating motion process is relieved, and sliding friction force is partially converted into rolling friction force between the guide roller and the plug rod part. Therefore, the piston guide mechanism of the air compressor can play a guide role, partially converts sliding friction into rolling friction, reduces heating and abrasion, and prolongs the service life.

Description

Technical Field

[0001] This utility model relates to the field of air compressors, and in particular to an air compressor piston guiding mechanism. Background Technology

[0002] An air compressor is a device used to compress gas, converting mechanical energy into gas pressure energy. The working principle of an air compressor mainly relies on changing the gas volume, increasing the velocity of gas molecules, or converting velocity energy into pressure to compress the gas. Commonly used air compressors on the market include reciprocating air compressors, screw air compressors, centrifugal compressors, vane air compressors, and scroll air compressors. Air compressors are widely used in various industries, such as refrigerators, air conditioners, refrigeration, oil fields, natural gas filling stations, rock drills, pneumatic tools, vehicle brakes, door and window opening and closing, textile machinery, tire inflation, plastic machinery, mining, marine, medical, and sandblasting / painting fields. Oil-free reciprocating air compressors compress gas through the reciprocating motion of a piston within a cylinder. The piston is typically driven by a crank or cam. During this reciprocating motion, the side of the piston is subjected to force against the side of the cylinder wall, resulting in significant sliding friction and heat generation. Prolonged operation wears down the guide rings and sealing rings on the piston, reducing its service life and requiring frequent replacement. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an air compressor piston guide mechanism that can play a guiding role, converting sliding friction into rolling friction, reducing heat generation and wear, and improving service life.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] An air compressor piston guide mechanism, including

[0006] A piston assembly includes a piston, a cylinder, and an eccentric cam that drives the piston to move repeatedly along the inner wall of the cylinder. The piston includes a piston head and a piston rod. The piston head cooperates with the cylinder. The piston rod is provided with a mounting hole for accommodating the eccentric cam. The piston rod is provided with parallel surfaces on both sides that are parallel to the direction of movement of the piston head.

[0007] The guide assembly, located between the cylinder and the eccentric cam, includes guide rollers disposed on both sides of the piston rod portion, and the guide rollers are in rolling connection with the parallel surface.

[0008] An air compressor piston guiding mechanism according to an embodiment of the present invention has at least the following beneficial effects: During operation, the eccentric cam rotates and engages with the mounting hole of the piston rod, driving the piston head to move repeatedly along the cylinder body. The guide rollers on both sides of the piston rod play a guiding role, eliminating the need for a guide ring. Simultaneously, it reduces the force on the side of the piston head and the side of the cylinder inner wall during reciprocating motion, converting part of the sliding friction between the piston head and the cylinder inner wall into rolling friction between the guide rollers and the piston rod. Therefore, this air compressor piston guiding mechanism can play a guiding role, converting sliding friction into rolling friction, reducing heat generation and wear, and improving service life.

[0009] According to some embodiments of the present invention, a base is also included, wherein a mounting port is provided in the middle of the base, the eccentric cam is mounted at the mounting port, and the cylinder and the guide assembly are mounted on the outer periphery of the base located at the mounting port.

[0010] The advantage is that the base and mounting port provide a location for the eccentric cam, cylinder, and guide assembly, making it convenient to install the eccentric cam, cylinder, and guide assembly.

[0011] According to some embodiments of the present invention, the guide assembly further includes a mounting base and a mounting clamp arm disposed on the side of the mounting base. The mounting clamp arm has an upper clamp arm and a lower clamp arm, and a mounting notch is formed between the upper clamp arm and the lower clamp arm. The mounting notch is provided with a mounting shaft, and the guide roller is mounted on the mounting shaft.

[0012] The advantages are: the mounting base and mounting clamp provide an installation position for the guide roller, and the mounting clamp has an installation notch and mounting shaft to ensure that the guide roller will not fall out during operation after installation, which is conducive to stable operation.

[0013] According to some embodiments of this utility model, both the upper clamping arm and the lower clamping arm are provided with through holes, and the mounting shaft passes through the through holes and is fixed with a nut.

[0014] The advantage is that this arrangement allows the mounting shaft to pass through the through holes in the upper and lower clamping arms and be fixed with the nut, which facilitates the installation and replacement of the guide rollers.

[0015] According to some embodiments of the present invention, the mounting base has a side hole on its side, the mounting arm has a mounting rod, the mounting rod is fitted with the side hole, the top surface of the mounting base has a top hole communicating with the side hole, and the top hole has a bolt for tightening the mounting rod.

[0016] The advantages are: the mounting base has side holes that cooperate with the mounting rod of the mounting arm, and bolts are provided in the top hole of the mounting base to tighten the mounting rod, which facilitates the installation and adjustment of the position of the mounting arm, thereby adjusting the position of the guide roller.

[0017] According to some embodiments of this utility model, the other end of the mounting rod is provided with an external thread and a nut for fixing.

[0018] The advantage is that the other end of the mounting rod is equipped with an external thread and a nut, which further ensures that the mounting rod and the mounting base are fixed and prevents them from loosening during operation.

[0019] According to some embodiments of this utility model, the guide roller is a rolling bearing.

[0020] The advantage is that setting the guide roller as a rolling bearing can further reduce the rolling friction between it and the stopper rod, thus reducing wear on the stopper rod.

[0021] According to some embodiments of the present invention, the piston assembly further includes a crankshaft connected to the eccentric cam, the crankshaft being used to drive the eccentric cam to rotate.

[0022] The advantage is that the crankshaft can drive the eccentric cam to rotate. It should be noted that the crankshaft also needs to be connected to a motor.

[0023] According to some embodiments of the present invention, the cylinder body includes a cylinder seat and a cylinder cover. The cylinder seat is provided with a cylinder hole for accommodating the plug head, and the cylinder cover faces away from the plug rod portion to cover the cylinder hole.

[0024] The advantages are: the cylinder block with a cylinder seat facilitates installation on a base, and the cylinder head facilitates installation and maintenance.

[0025] According to some embodiments of the present invention, a cylinder sleeve is provided inside the cylinder bore, and the cylinder sleeve is used to slide with the plug head.

[0026] The advantages are: installing a cylinder liner inside the cylinder bore facilitates installation with the plug head, and the cylinder liner can be replaced after wear, reducing maintenance and replacement costs.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0030] Figure 2 for Figure 1 A diagram showing the partial removal of the cylinder block;

[0031] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0032] Reference numerals: Piston 100, Cylinder block 110, Eccentric cam 120, Plug head 130, Plug rod 140, Mounting hole 150, Parallel surface 160, Guide roller 170, Base 180, Mounting port 190, Mounting seat 200, Mounting clamp arm 210, Upper clamp arm 220, Lower clamp arm 230, Mounting notch 240, Mounting shaft 250, Nut 260, Side hole 270, Mounting rod 280, Top hole 290, Bolt 300, Crankshaft 310, Cylinder seat 320, Cylinder head 330, Cylinder bore 340, Cylinder liner 350. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" and "second" are mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation, connection, and linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The following is for reference. Figures 1-3 A piston guide mechanism for an air compressor is described in detail with reference to a specific embodiment. It is to be understood that the following description is merely illustrative and not intended to limit the scope of the invention.

[0038] like Figures 1-3 As shown, an air compressor piston guide mechanism includes a piston assembly and a guide assembly.

[0039] The piston assembly includes a piston 100, a cylinder 110, and an eccentric cam 120 that drives the piston 100 to move repeatedly along the inner wall of the cylinder 110. The piston 100 includes a piston head 130 and a piston rod 140. The piston head 130 cooperates with the cylinder 110. The piston rod 140 is provided with a mounting hole 150 for accommodating the eccentric cam 120. Parallel surfaces 160 parallel to the direction of movement of the piston head 130 are provided on both sides of the piston rod 140. The guide assembly is located between the cylinder 110 and the eccentric cam 120 and includes guide rollers 170 provided on both sides of the piston rod 140. The guide rollers 170 are in rolling connection with the parallel surfaces 160. During operation, the eccentric cam 120 rotates and engages with the mounting hole 150 of the piston rod portion 140, driving the piston head 130 to move repeatedly within the cylinder body 110. The guide rollers 170 on both sides of the piston rod portion 140 act as guides, eliminating the need for a guide ring. This also reduces the force on the side of the piston head 130 against the inner wall of the cylinder body 110 during reciprocating motion, converting some of the sliding friction between the piston head 130 and the inner wall of the cylinder body 110 into rolling friction between the guide rollers 170 and the piston rod portion 140. Therefore, this air compressor piston 100 guiding mechanism effectively guides the piston, converting sliding friction into rolling friction, reducing heat generation and wear, and extending service life.

[0040] Specifically, such as Figure 1 and Figure 2 As shown, it also includes a base 180, with a mounting port 190 in the middle. The eccentric cam 120 is mounted at the mounting port 190, and the cylinder body 110 and guide assembly are mounted on the outer periphery of the base 180 at the mounting port 190. The base 180 and mounting port 190 provide mounting positions for the eccentric cam 120, cylinder body 110, and guide assembly, facilitating their installation.

[0041] like Figure 2 and Figure 3 As shown, in some specific embodiments of this utility model, the guide assembly further includes a mounting base 200 and a mounting clamping arm 210 disposed on the side of the mounting base 200. The mounting clamping arm 210 has an upper clamping arm 220 and a lower clamping arm 230, forming a mounting notch 240 between the upper clamping arm 220 and the lower clamping arm 230. The mounting notch 240 has a mounting shaft 250, and the guide roller 170 is mounted on the mounting shaft 250. The mounting base 200 and the mounting clamping arm 210 provide a mounting position for the guide roller 170. The mounting notch 240 and the mounting shaft 250 in the mounting clamping arm 210 ensure that the guide roller 170 will not fall out during operation after installation, which is beneficial to stable operation. In addition, both the upper clamping arm 220 and the lower clamping arm 230 have through holes, and the mounting shaft 250 passes through the through holes and is fixed with a nut 260. This arrangement allows the mounting shaft 250 to pass through the through holes of the upper clamping arm 220 and the lower clamping arm 230 and be fixed with the nut 260, which is beneficial for the installation and replacement of the guide roller 170. Furthermore, the mounting base 200 has a side hole 270 on its side, and the mounting arm 210 has a mounting rod 280. The mounting rod 280 is fitted with the side hole 270 for installation. The top surface of the mounting base 200 has a top hole 290 communicating with the side hole 270, and a bolt 300 is provided in the top hole 290 for tightening the mounting rod 280. The mounting base 200 has a side hole 270 that mates with the mounting rod 280 of the mounting arm 210, and the bolt 300 in the top hole 290 of the mounting base 200 tightens the mounting rod 280, facilitating the installation and adjustment of the position of the mounting arm 210, thereby adjusting the position of the guide roller 170. Further, the other end of the mounting rod 280 has an external thread and a nut 260 for fixation. The external thread and nut 260 on the other end of the mounting rod 280 further ensure that the mounting rod 280 and the mounting base 200 are fixed, preventing loosening during operation.

[0042] It is worth mentioning that the guide roller 170 is a rolling bearing. Using a rolling bearing for the guide roller 170 further reduces rolling friction between it and the piston rod portion 140, thus reducing wear on the piston rod portion 140. Additionally, the piston assembly includes a crankshaft 310 connected to the eccentric cam 120, which drives the eccentric cam 120 to rotate. While the crankshaft 310 drives the eccentric cam 120 to rotate, it should be noted that the crankshaft 310 also needs to be connected to a motor.

[0043] like Figure 2As shown, the cylinder block 110 includes a cylinder seat 320 and a cylinder head 330. The cylinder seat 320 has a cylinder bore 340 for accommodating the plug head 130, and the cylinder head 330 faces away from the plug rod portion 140 to cover the cylinder bore 340. The cylinder seat 320 facilitates installation on the base 180, and the cylinder head 330 facilitates installation and maintenance. Additionally, a cylinder sleeve 350 is provided inside the cylinder bore 340, which slides with the plug head 130. The cylinder sleeve 350 facilitates installation with the plug head 130, and can be replaced after wear, reducing maintenance and replacement costs.

[0044] In the description of this specification, references to terms such as "an embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An air compressor piston guide mechanism characterized by, The piston assembly comprises a piston (100), a cylinder (110), and an eccentric cam (120) for driving the piston (100) to move repeatedly along the inner wall of the cylinder (110), the piston (100) comprises a plug head (130) and a plug rod (140), the plug head (130) is matched with the cylinder (110), the plug rod (140) is provided with a mounting hole (150) for accommodating the eccentric cam (120), and both sides of the plug rod (140) are provided with parallel surfaces (160) parallel to the moving direction of the plug head (130). The guide assembly is located between the cylinder (110) and the eccentric cam (120) and comprises guide rollers (170) arranged on both sides of the plug rod (140), and the guide rollers (170) are in rolling connection with the parallel surfaces (160). The base (180) is further provided with a mounting port (190) in the middle, the eccentric cam (120) is mounted at the mounting port (190), and the cylinder (110) and the guide assembly are mounted on the outer periphery of the base (180) at the mounting port (190).

2. An air compressor piston guide mechanism as claimed in claim 1, wherein, The guide assembly further comprises a mounting seat (200) and mounting clamping arms (210) arranged on the side of the mounting seat (200), the mounting clamping arms (210) are provided with upper clamping arms (220) and lower clamping arms (230), the upper clamping arms (220) and the lower clamping arms (230) form mounting notches (240) therebetween, the mounting notches (240) are provided with mounting shafts (250), and the guide rollers (170) are mounted on the mounting shafts (250).

3. An air compressor piston guide mechanism as claimed in claim 2, wherein, The upper clamping arms (220) and the lower clamping arms (230) are both provided with through holes, the mounting shafts (250) pass through the through holes and are fixed with nuts (260).

4. An air compressor piston guide mechanism as claimed in claim 3, wherein, The side of the mounting seat (200) is provided with side holes (270), the mounting clamping arms (210) are provided with mounting rods (280), the mounting rods (280) are mounted in cooperation with the side holes (270), the top surface of the mounting seat (200) is provided with top holes (290) communicating with the side holes (270), and the top holes (290) are provided with bolts (300) for clamping the mounting rods (280).

5. An air compressor piston guide mechanism as claimed in claim 3, wherein, The other end of the mounting rod (280) is provided with an external thread and is fixed with a nut (260).

6. An air compressor piston guide mechanism as claimed in claim 5, wherein, The guide roller (170) is a rolling bearing.

7. An air compressor piston guide mechanism as claimed in claim 1, wherein, The piston assembly further comprises a crankshaft (310) connected with the eccentric cam (120), and the crankshaft (310) is used for driving the eccentric cam (120) to rotate.

8. An air compressor piston guide mechanism as claimed in claim 2, wherein, The cylinder (110) comprises a cylinder base (320) and a cylinder cover (330), the cylinder base (320) is provided with a cylinder hole (340) for accommodating the plug head (130), and the cylinder cover (330) is arranged away from the plug rod (140) and used for covering the cylinder hole (340).

9. An air compressor piston guide mechanism as claimed in claim 2, wherein, The inner side of the cylinder hole (340) is provided with a cylinder sleeve (350), and the cylinder sleeve (350) is used for slidingly matching with the plug head (130).

10. An air compressor piston guide mechanism as claimed in claim 9, wherein, ​

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