Combined oil ring with improved closing structure
By employing a joint structure in the combined oil ring with inclined and parallel openings on both sides of the bushing, the problem of scraper deformation caused by the small contact area of the bushing opening is solved, thus enhancing the oil scraping ability.
Patent Information
- Application Number
- CN202520551054.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-27
AI Technical Summary
The closed-off shape of the two sides of the liner opening in the combined oil ring results in a small contact area, and the compressive force can easily deform the scraper blade, weakening its circumferential oil scraping ability.
The blade is designed with inclined and parallel openings on both sides of the spring to form a closed structure, which increases the contact area, counteracts the compressive force, ensures that the scraper blade does not deform, and maintains its oil scraping ability.
By improving the joint structure, the contact area of the scraper blade is increased, the compressive force is counteracted, and the scraper blade is ensured not to deform during the oil scraping movement, thus maintaining its circumferential oil scraping ability.
Smart Images
Figure CN223676380U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to internal combustion engine technical field, especially relate to a combination oil ring of improved joint structure. BACKGROUND
[0002] The general combination oil ring includes a pair of upper and lower scrapers and a lining ring arranged between them, such as Figure 1 The main function of the oil ring is to regulate lubricating oil, and the excess lubricating oil on the cylinder wall is scraped off during operation. Figure 2 The openings on both sides of the lining ring are connected, the contact area of the joint part is small, and the resultant force formed after the compression of the lining ring easily attacks the upper scraper, causing the deformation of the scraper and weakening the circumferential oil scraping capacity. SUMMARY
[0003] Therefore, the utility model provides a combination oil ring with improved joint structure to solve the above problems.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A combination oil ring with improved joint structure, comprising: an upper scraper, a lining spring and a lower scraper, the upper scraper and the lower scraper are arranged at the top end and the bottom end of the lining spring respectively, the openings on both sides of the lining spring are inclined and parallel to each other, and the openings on both sides of the lining spring are fixedly connected to form a joint structure after lapping.
[0006] Further, the lining spring is a corrugated circular ring, the upper scraper is arranged at the wave crest of the lining spring, and the lower scraper is arranged at the wave trough of the lining spring.
[0007] Further, the lining spring is a trapezoidal corrugated circular ring, a sinusoidal corrugated circular ring or a semicircular corrugated circular ring.
[0008] Further, the lining spring is provided with an inner circular contact part for the inner ring of the upper scraper and the lower scraper.
[0009] The utility model has the advantages of:
[0010] The utility model makes the openings on both sides of the lining spring inclined and parallel, and the openings on both sides of the lining spring are fixedly connected to form a joint structure after lapping, which increases the contact area, offsets the compression force, and the scraper does not deform during oil scraping movement, thereby maintaining the circumferential oil scraping capacity. BRIEF DESCRIPTION OF DRAWINGS
[0011] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the accompanying drawings required to be used in the following description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other accompanying drawings can be obtained by those skilled in the art without any creative effort on the premise that the accompanying drawings are provided.
[0012] Figure 1 is a schematic view of the prior structure of the combined oil ring.
[0013] Figure 2 is Figure 1 is a partial enlarged view of the joint structure of the liner ring at position A.
[0014] Figure 3 is a schematic view of the joint structure of the liner spring of the combined oil ring with improved joint structure.
[0015] Figure 4 is a top view of the combined oil ring with improved joint structure.
[0016] Figure 5 is Figure 4 is a B-B sectional view of the combined oil ring.
[0017] In the drawings:
[0018] 1-upper scraping piece, 2-liner spring, 3-lower scraping piece, 4-inner circular contact part. DETAILED DESCRIPTION
[0019] The technical schemes in the embodiments of the present application will be described clearly and completely in combination with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative effort belong to the scope of protection of the present application.
[0020] Referring to the accompanying drawings shown in the drawings, Figures 1-5 The present application provides a combined oil ring with improved joint structure, which comprises: an upper scraping piece 1, a liner spring 2 and a lower scraping piece 3, the upper scraping piece 1 and the lower scraping piece 3 are arranged at the top end and the bottom end of the liner spring 2 respectively, the openings on both sides of the liner spring 2 are arranged obliquely and parallel to each other, and the openings on both sides of the liner spring 2 are fixedly connected after overlapping to form a joint structure.
[0021] Preferably, in an embodiment, the liner spring 2 is a corrugated circular ring, the upper scraping piece 1 is arranged at the wave crest of the liner spring 2, and the lower scraping piece 3 is arranged at the wave trough of the liner spring 2.
[0022] Preferably, in an embodiment, the liner spring 2 is a trapezoidal corrugated circular ring, a sinusoidal corrugated circular ring or a semicircular corrugated circular ring.
[0023] Preferably, one embodiment, the liner spring 2 is provided with the inner ring contact for the upper blade 1 and the lower blade 3, so that the liner spring 2 is evenly located between the piston and the piston cavity in the internal combustion engine.
[0024] Working principle: the utility model discloses a liner spring 2 opening both sides are inclined and parallel arrangement, the liner spring 2 opening both sides lap joint fixed connection and form the joint structure, increase the contact area, offset compression force, use the blade to scrape the oil movement and do not deform, keep its circumferential oil scraping ability.
[0025] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part.
[0026] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A combination oil ring for improved lip formation, characterized by, The utility model relates to a kind of spring-loaded wiper blade, including: Upper blade (1), backing spring (2) and lower blade (3), the upper blade (1) and the lower blade (3) are respectively arranged at the top end and the bottom end of the backing spring (2), the two sides of the backing spring (2) are obliquely arranged and parallel to each other, the opening of the two sides of the backing spring (2) is fixedly connected after lap joint and forms the structure of joint.
2. The combination oil ring of claim 1 wherein, The backing spring (2) is a corrugated circular ring, the upper blade (1) is arranged at the wave crest of the backing spring (2), and the lower blade (3) is arranged at the wave trough of the backing spring (2).
3. The combination oil ring of claim 2 wherein, The backing spring (2) is a trapezoidal corrugated circular ring, a sinusoidal corrugated circular ring or a semicircular corrugated circular ring.
4. The combination oil ring of claim 1 wherein, An inner circular contact portion (4) is provided on the backing spring (2) for the inner ring of the upper blade (1) and the lower blade (3).