Piston assembly of worm speed reducer

Abstract

The utility model discloses a worm reducer piston assembly which comprises a pressure bearing mechanism. The pressure bearing mechanism comprises a piston head, two metal rings embedded in the two ends of the piston head, annular grooves formed in the inner walls of the metal rings, two arc-shaped plates slidably connected with the annular grooves, two cushion blocks arranged between the two arc-shaped plates in a filling mode, and U-shaped insertion plates connected with the two arc-shaped plates in an inserted mode and connected with the cushion blocks. The U-shaped inserting plates are arranged on the arc-shaped plates, the inserting plate sleeves are connected to the outer sides of the U-shaped inserting plates in a sleeving mode, the rod bodies are connected among the arc-shaped plates, and the supporting rods are connected with the rod bodies. According to the piston rod, when the supporting rod drives the rod body to rotate, the two arc-shaped plates can be driven to rotate, then the arc-shaped plates are attached to and rubbed with the inner wall of the annular groove, dregs and gaps are effectively prevented from being generated, and the connection stability of the piston head and the supporting rod is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of piston components, in particular to a worm reducer piston component. Background Art

[0002] The automotive piston is the heart of the car engine, playing a crucial role during engine startup. It withstands gas pressure and, through the piston pin, allows the connecting rod to drive the crankshaft. The piston top also forms part of the combustion chamber. Typical automotive pistons are categorized into three types: diesel, gasoline, and general-purpose.

[0003] Application number CN202023202204.3 provides a rotary piston for a reducer, comprising a piston metal cover and a piston skirt. This invention utilizes a rubber ring over the top of a metal gasket, providing a good seal and filling effect during use. Over time, the rubber expands to fill gaps that have become larger. However, this also presents a problem: the rubber expands, causing wear and tear, making it impossible to seal gaps. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A worm reducer piston assembly includes a pressure-bearing mechanism, which includes a piston head, two metal rings embedded at both ends of the piston head, an annular groove opened on the inner wall of the metal ring, two arc-shaped plates slidably connected to the annular groove, two pads filled between the two arc-shaped plates, a U-shaped plug-in plate plugged into the two arc-shaped plates and connected to the pads, a plug-in plate sleeve sleeved on the outside of the U-shaped plug-in plate, a rod body connected between multiple arc-shaped plates, and a support rod connected to the rod body.

[0007] By adopting the above technical solution, when the support rod rotates with the rod body, it will also rotate with the two curved plates, and then the curved plates will fit and rub against the inner wall of the annular groove, effectively preventing the generation of residue and gaps, and ensuring the stability of the connection between the piston head and the support rod.

[0008] In a preferred example, the present invention can be further configured as follows: the thickness of the arc-shaped plate is greater than the depth of the annular groove, and the metal ring and the arc-shaped plate are both made of metal material.

[0009] In a preferred example, the present invention can be further configured as follows: the width of the pad is greater than the width of the annular groove, the outer wall of the pad fits with the inner wall of the metal ring, and the inner wall of the pad fits with the outer wall of the rod.

[0010] In a preferred example, the present invention can be further configured as follows: a plurality of openings are opened on the outer side of the piston head, and the plurality of openings are arranged in a row with equal spacing.

[0011] In a preferred example, the present invention can be further configured as follows: a metal gas ring is installed near the opening on the top of the piston head.

[0012] In a preferred example, the present invention can be further configured as follows: a piston skirt ring is installed near the opening at the bottom of the piston head.

[0013] In a preferred example, the present invention can be further configured as follows: a metal oil ring is installed in the opening between the metal gas ring and the piston skirt ring.

[0014] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0015] In the utility model, when the support rod rotates with the rod body, the two arc plates will rotate with it, and then the arc plates will fit and rub against the inner wall of the annular groove, effectively preventing the generation of residues and gaps and ensuring the stability of the connection between the piston head and the support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the piston head of the utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the pressure-bearing mechanism of the utility model;

[0019] Figure 4 A three-dimensional diagram of a spacer, a U-shaped insert and an insert sleeve of the utility model;

[0020] Figure 5 It is a stereoscopic diagram of the metal gas ring, metal oil ring and piston skirt ring of the utility model.

[0021] Reference numerals:

[0022] 100, pressure-bearing mechanism; 110, piston head; 120, metal ring; 130, annular groove; 140, arc-shaped plate; 150, spacer; 160, U-shaped insert plate; 170, insert plate sleeve; 180, rod body; 190, support rod;

[0023] 200, metal gas ring;

[0024] 300, metal oil ring;

[0025] 400. Piston skirt ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0027] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0028] A worm reducer piston assembly provided by some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0029] Example 1:

[0030] Combine Figure 1-5 As shown, the utility model provides a worm reducer piston assembly, including a pressure-bearing mechanism 100, which includes a piston head 110, two metal rings 120 embedded at both ends of the piston head 110, an annular groove 130 opened on the inner wall of the metal ring 120, two arc-shaped plates 140 slidingly connected to the annular groove 130, two pads 150 filled between the two arc-shaped plates 140, a U-shaped plug-in plate 160 plugged into the two arc-shaped plates 140 and connected to the pads 150, a plug-in plate sleeve 170 sleeved on the outside of the U-shaped plug-in plate 160, a rod body 180 connected between multiple arc-shaped plates 140, and a support rod 190 connected to the rod body 180.

[0031] Furthermore, the thickness of the arc plate 140 is greater than the depth of the annular groove 130 . The metal ring 120 and the arc plate 140 are both made of metal material. This size design ensures that the arc plate 140 can fit the distance between the metal ring 120 and the rod body 180 .

[0032] Furthermore, the width of the pad 150 is greater than the width of the annular groove 130, the outer wall of the pad 150 fits with the inner wall of the metal ring 120, and the inner wall of the pad 150 fits with the outer wall of the rod body 180. With this size design, the pad 150 can reinforce the two arc plates 140 while preventing them from falling into the annular groove 130.

[0033] Example 2:

[0034] Combine Figure 1 and Figure 5 As shown, based on the first embodiment, a plurality of openings are provided on the outside of the piston head 110 , and the plurality of openings are arranged in a row at equal intervals, and the openings are provided to provide conditions for the metal gas ring 200 , the piston skirt ring 400 , and the metal oil ring 300 .

[0035] Furthermore, a metal air ring 200 is installed near the opening at the top of the piston head 110 . The provision of the metal air ring 200 can improve the sealing performance of the piston head 110 .

[0036] Furthermore, a piston skirt ring 400 is installed near the opening at the bottom of the piston head 110 . The provision of the piston skirt ring 400 can enhance the sealing strength of the piston head 110 .

[0037] Example 3:

[0038] Combine Figure 1 and Figure 5 As shown, in the above embodiment, a metal oil ring 300 is installed in the opening between the metal air ring 200 and the piston skirt ring 400 . The provision of the metal oil ring 300 can enhance the sealing effect of the piston head 110 .

[0039] The working principle and usage process of the present invention: When the device is put into actual use, when the support rod 190 rotates with the rod body 180, it will also rotate with the two curved plates 140, and then the curved plates 140 will fit and rub against the inner wall of the annular groove 130, effectively preventing the generation of residue and gaps, and ensuring the stability of the connection between the piston head 110 and the support rod 190.

[0040] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A worm reducer piston assembly, characterized in that: include: A pressure-bearing mechanism (100) comprises a piston head (110), two metal rings (120) embedded at both ends of the piston head (110), an annular groove (130) provided on the inner wall of the metal ring (120), two arc-shaped plates (140) slidably connected to the annular groove (130), two cushion blocks (150) filled between the two arc-shaped plates (140), a U-shaped plug-in plate (160) plugged into the two arc-shaped plates (140) and connected to the cushion blocks (150), a plug-in plate sleeve (170) sleeved on the outside of the U-shaped plug-in plate (160), a rod body (180) connected between the plurality of arc-shaped plates (140), and a support rod (190) connected to the rod body (180).

2. A worm reducer piston assembly according to claim 1, characterized in that: The thickness of the arc-shaped plate (140) is greater than the groove depth of the annular groove (130), and the metal ring (120) and the arc-shaped plate (140) are both made of metal material.

3. The worm reducer piston assembly according to claim 1, characterized in that: The width of the pad (150) is greater than the width of the annular groove (130), the outer wall of the pad (150) is in contact with the inner wall of the metal ring (120), and the inner wall of the pad (150) is in contact with the outer wall of the rod body (180).

4. The worm reducer piston assembly according to claim 1, characterized in that: The outer side of the piston head (110) is provided with a plurality of openings, which are arranged in a row at equal intervals.

5. The worm reducer piston assembly according to claim 4, characterized in that: A metal gas ring (200) is installed near the opening on the top of the piston head (110).

6. The worm reducer piston assembly according to claim 4, characterized in that: A piston skirt ring (400) is installed near the opening at the bottom of the piston head (110).

7. A worm reducer piston assembly according to any one of claims 1 to 6, characterized in that: A metal oil ring (300) is installed in the opening between the metal gas ring (200) and the piston skirt ring (400).

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