A two-stage piston split compressor piston connecting rod mechanism

Abstract

The utility model discloses a two stage piston split type compressor piston connecting rod mechanism, include: the two pistons of opposite setting, the opposite side of two pistons is installed respectively with leather bowl, the opposite side of two pistons is respectively opposite and extends and is formed with the connecting plate, and the connecting plate of two pistons mutually adheres, and the connecting plate of one piston one end is pivoted in the middle part of the connecting plate of another piston, and the middle part of the connecting plate of one piston and the one end of the connecting plate of another piston are all set up with the insertion hole respectively, be used for transmission connection motor's drive shaft, the eccentric shaft is eccentrically connected with the drive shaft, and the eccentric shaft is movably inserted in the insertion hole of the connecting plate of two pistons. The utility model solves the problem that the two stage compressor for traditional automobile air suspension exists that one two stage piston cannot do linear motion with the same frequency, and the leather bowl on the piston is unevenly stressed, and the working life is low.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, specifically to a piston connecting rod mechanism for a compressor with a split primary and secondary piston system. Background Technology

[0002] Existing single-stage air compressors have a simple structure, low operating costs, and are relatively easy to maintain. They also offer high air compression efficiency, producing high-quality compressed air. However, single-stage air compressors rely on a single compressor head, which may not meet some high-pressure requirements. Furthermore, the single-stage compressor head has a relatively short lifespan and needs periodic replacement.

[0003] Two-stage compressors have two compressor heads, enabling them to provide a higher compression ratio and produce higher pressure air. Additionally, two-stage compressor heads have a longer service life than single-stage compressor heads.

[0004] Currently, traditional two-stage compressors used in automotive air suspension have the following technical problems: the first and second stage pistons cannot move linearly at the same frequency, the piston cups are subjected to uneven force, and their service life is relatively short. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, a separate piston and connecting rod mechanism for a compressor with a first and second stage piston is provided. This addresses the problems of traditional two-stage compressors used in automotive air suspensions, where the first and second stage pistons cannot move linearly at the same frequency, the piston cups experience uneven stress, and the service life is relatively short.

[0006] To achieve the above objectives, a first- and second-stage piston-connecting rod mechanism for a compressor is provided, comprising:

[0007] Two pistons are arranged opposite each other, with a cup installed on the opposite side of each piston. Connecting plates extend from the opposite sides of each piston and fit together. One end of the connecting plate of one piston is connected to the middle of the connecting plate of the other piston. Insertion holes are opened in the middle of the connecting plate of one piston and one end of the connecting plate of the other piston.

[0008] A drive shaft for transmitting power to a motor is eccentrically connected to the drive shaft, and the eccentric shaft is rotatably inserted into the insertion hole of the connecting plate of the two pistons.

[0009] Furthermore, one end of the connecting plate of one piston is pivotally connected to the middle of the connecting plate of the other piston.

[0010] Furthermore, a first through hole is provided at one end of the connecting plate of the first piston, and a second through hole is provided in the middle of the connecting plate of the other piston. The second through hole is coaxially arranged with the first through hole, and a pin is rotatably inserted through the first through hole and the second through hole.

[0011] Furthermore, a bushing is fitted onto the pin.

[0012] Furthermore, the piston has two connecting plates, which are arranged opposite to each other, and the connecting plate on the other piston is arranged between the two connecting plates of the first piston.

[0013] Furthermore, the eccentric shaft is rotatably inserted into the insertion hole of the connecting plate on the piston via a bearing.

[0014] The beneficial effect of this utility model is that the piston connecting rod mechanism of the compressor with a split first and second stage piston design reduces mutual interference between the two pistons.

[0015] The first and second stage pistons of the compressor piston connecting rod mechanism of this utility model perform non-linear reciprocating motion, and the radial force on the piston cup will not change abruptly. On the one hand, it reduces friction noise, and on the other hand, it extends the service life of the piston cup.

[0016] This utility model features a split-stage piston compressor piston connecting rod mechanism with a separate drive shaft, eccentric shaft, and connecting plate, resulting in low manufacturing cost and convenient maintenance. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the piston connecting rod mechanism of a split-type compressor with a first and second stage piston, according to an embodiment of the present invention.

[0019] Figure 2 for Figure 1 The sectional view at point AA.

[0020] Figure 3 This is a three-dimensional structural diagram of the piston connecting rod mechanism of a compressor with a split-type first and second stage piston according to an embodiment of the present invention.

[0021] Figure 4 This is an exploded structural diagram of the piston connecting rod mechanism of a split-type compressor with a first and second stage piston, according to an embodiment of this utility model.

[0022] Figure 5This is a schematic diagram showing the usage state of the piston connecting rod mechanism of the split-type compressor with a first and second stage piston, according to an embodiment of this utility model.

[0023] Figure 6 This is a cross-sectional view of the cylinder according to an embodiment of the present utility model.

[0024] Figures 7 to 10 This is a schematic diagram of the extreme position of the eccentric shaft in the socket according to an embodiment of the present invention.

[0025] Figure 11 This is a schematic diagram showing the state of the connecting plate deflecting inside the cylinder in an embodiment of the present invention.

[0026] Figure label:

[0027] Piston 1, Leather cup 11, Connecting plate 12, Pin 13, Bushing 14, Pressure ring 15, Valve plate 16, Screw 17, C-type retaining ring 18;

[0028] Drive shaft 2, eccentric shaft 21, bearing 22, bearing 23;

[0029] Motor 3;

[0030] Cylinder 4. Detailed Implementation

[0031] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Reference Figures 1 to 6 As shown, this utility model provides a primary and secondary piston-connecting rod mechanism for a compressor, including a piston 1 and a drive shaft 2.

[0034] In this embodiment, there are two pistons 1. The two pistons 1 are arranged opposite each other, that is, the two pistons 1 are arranged coaxially or collinearly, and the two pistons 1 are of different sizes.

[0035] Leather cups 11 are respectively installed on the opposite sides of the two pistons 1. For details, see [link to details]. Figure 4 As shown, the cup 11 is mounted on the piston 1 via a pressure ring 15, a valve plate 16, and a screw 17.

[0036] Two pistons 1 extend opposite sides to form connecting plates 12. The connecting plates 12 on the two pistons 1 fit together. One end of the connecting plate 12 of one piston 1 is pivotally connected to the middle of the connecting plate 12 of the other piston 1. Insertion holes are respectively provided in the middle of the connecting plate 12 of one piston 1 and one end of the connecting plate 12 of the other piston 1.

[0037] In a preferred embodiment, one end of the connecting plate 12 of one piston 1 is pivotally connected to the middle of the connecting plate 12 of another piston 1 via a pin 13.

[0038] Specifically, in this embodiment, a first through hole is provided at one end of the connecting plate 12 of one piston 1. A second through hole is provided in the middle of the connecting plate 12 of the other piston 1. The second through hole is coaxially arranged with the first through hole. A pin 13 is rotatably inserted through the first through hole and the second through hole.

[0039] In a preferred embodiment, one piston 1 has two connecting plates 12. The two connecting plates 12 are arranged opposite to each other. The connecting plate 12 of the other piston 1 is disposed between the two connecting plates 12 of the first piston 1.

[0040] The drive shaft 2 is eccentrically connected to an eccentric shaft 21. The eccentric shaft 21 is movably inserted into the insertion hole of the connecting plate 12 of the two pistons 1. The drive shaft 2 is connected to the motor 3.

[0041] Combination Figure 5 and Figure 6 As shown, in use, the piston connecting rod mechanism of the first and second stage piston-type compressor of this utility model is assembled in the cylinder 4 of the reciprocating piston compressor 1. The drive shaft 2 is driven and connected to the output shaft of the motor 3. The drive shaft 2 is rotatably mounted on the cylinder 4 through the bearing 23. After the motor 3 is started, the drive shaft 2 rotates and drives the connecting plate 12 through the eccentric setting of the eccentric shaft 21, thereby driving the two pistons 1 to reciprocate up and down to perform secondary gas compression.

[0042] The present invention relates to a compressor piston connecting rod mechanism with a split primary and secondary piston design, which reduces mutual interference between the two pistons.

[0043] The first and second stage pistons of the compressor piston connecting rod mechanism of this utility model perform non-linear reciprocating motion, and the radial force on the piston cup will not change abruptly. On the one hand, it reduces friction noise, and on the other hand, it extends the service life of the piston cup.

[0044] This utility model features a split-stage piston compressor piston connecting rod mechanism with a separate drive shaft, eccentric shaft, and connecting plate, resulting in low manufacturing cost and convenient maintenance.

[0045] In a preferred embodiment, a bushing 14 is fitted onto the pin 13. The bushing 14 is a copper bushing.

[0046] Combination Figure 4 As shown, the eccentric shaft 21 is rotatably inserted into the insertion hole of the connecting plate 12 on the piston 1 via the bearing 22. In this embodiment, both the bearing 22 and the bearing 23 are rolling bearings.

[0047] See Figure 7 The diagram shows the posture of the piston-connecting rod mechanism of the first and second stage piston-type compressor of this invention within the cylinder when the eccentric shaft is at its lower limit position on the drive shaft; see reference. Figure 8 The diagram shows the posture of the piston-connecting rod mechanism of the first and second stage piston split compressor of this invention within the cylinder when the eccentric shaft is at its left extreme position on the drive shaft; see reference. Figure 9 The diagram shows the posture of the piston-connecting rod mechanism of the first and second stage piston-type compressor of this invention within the cylinder when the eccentric shaft is at its upper limit position on the drive shaft; see reference. Figure 10 The diagram shows the posture of the piston connecting rod mechanism of the first and second stage piston split compressor of this utility model in the cylinder when the eccentric shaft is at the right extreme position of the drive shaft. Figure 11 The figure shows the relative position of the connecting plates of the two pistons when the eccentric shaft is at the right limit position of the drive shaft.

[0048] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A piston connecting rod mechanism for a split-stage compressor, characterized in that, include: Two pistons are arranged opposite each other, with a cup installed on the opposite side of each piston. Connecting plates extend from the opposite sides of each piston and fit together. One end of the connecting plate of one piston is pivotally connected to the middle of the connecting plate of the other piston. Insertion holes are opened in the middle of the connecting plate of one piston and one end of the connecting plate of the other piston. A drive shaft for transmitting power to a motor is eccentrically connected to the drive shaft, and the eccentric shaft is movably inserted into the insertion hole of the connecting plate of the two pistons.

2. The primary and secondary piston split-type compressor piston connecting rod mechanism according to claim 1, characterized in that, One end of the connecting plate of one piston is pivotally connected to the middle of the connecting plate of the other piston via a pin.

3. The primary and secondary piston-connecting rod mechanism of the compressor with separate primary and secondary pistons according to claim 2, characterized in that, One end of the connecting plate of the first piston has a first through hole, and the middle of the connecting plate of the other piston has a second through hole. The second through hole is coaxial with the first through hole, and a pin is rotatably inserted through the first through hole and the second through hole.

4. The primary and secondary piston split-type compressor piston connecting rod mechanism according to claim 3, characterized in that, A bushing is fitted onto the pin.

5. The primary and secondary piston split-type compressor piston connecting rod mechanism according to claim 1, characterized in that, The piston has two connecting plates, which are arranged opposite to each other. The connecting plate on the other piston is arranged between the two connecting plates of the first piston.

6. The primary and secondary piston split-type compressor piston connecting rod mechanism according to claim 5, characterized in that, The eccentric shaft is rotatably inserted into the insertion hole of the connecting plate on the piston via a bearing.

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