Lubricating device for sealing ring

Abstract

The present invention discloses a lubricating device for a sealing ring, which is used for lubricating a sealing ring sleeved on the end of a part. The lubricating device for the sealing ring comprises: a shell, a piston assembly and a lubricating oil storage tank. The shell has an inner cavity, and the inner cavity is provided with an opening along the transverse wall surface. The portion of the opening facing the center of the inner cavity is gradually expanded toward the center of the inner cavity, and a first through hole is provided on the upper wall surface of the inner cavity. The piston assembly comprises a piston head movably installed in the inner cavity of the shell along the transverse direction, and the shape of the piston head is adapted to the opening, and can be extended into the opening to seal the opening, and the free end of the piston head is used to abut against the end of the part. The lubricating oil storage tank is located above the shell, and can be connected to the inner cavity through the first through hole. The end of the part extends from the opening. The lubricating device for the sealing ring can quickly and evenly lubricate the sealing ring sleeved on the end of the part.

Description

Technical Field

[0001] The invention relates to the technical field of sealing ring lubrication, and in particular to a sealing ring lubrication device. Background Art

[0002] The interfaces between the engine oil passages, water passages and parts, such as the phase sensor and oil pressure sensor in contact with the oil chamber, are usually sealed by extending a cylinder from the part to the mounting hole and setting an O-ring on the cylinder, such as Figure 1 As shown in the figure, the parts that need to be installed with the engine body are sealed with the inner wall of the body mounting hole using an O-ring. The sealing ring and the inner wall of the mounting hole are interference fit. During the installation process, in order to avoid the sealing ring being scratched or flanging during the fitting, lubricating oil is usually needed to lubricate the sealing ring.

[0003] The traditional method of lubricating the seal ring is to use a brush to apply a circle around the seal ring. This method has the following disadvantages: the lubrication efficiency of using a brush is low; the lubrication is unevenly applied, and some areas are not lubricated enough, resulting in insufficient lubrication; the brush has the risk of hair loss, which affects the sealing effect of the seal ring. Summary of the invention

[0004] The main purpose of the present invention is to provide a sealing ring lubrication device, which can lubricate the sealing ring arranged on the end of a part, aiming to solve the problems of low lubrication efficiency, uneven application and hair loss risk of the brush in the prior art.

[0005] The sealing ring lubricating device provided by the present invention is used for lubricating the sealing ring sleeved on the end of the part, and comprises:

[0006] The housing has an inner cavity, wherein the inner cavity is provided with an opening along a transverse wall surface, wherein a portion of the opening toward the center of the inner cavity is gradually expanded toward the center of the inner cavity, and a first through hole is provided on an upper wall surface of the inner cavity;

[0007] A piston assembly, comprising a piston head movably mounted in the inner cavity of the housing in a transverse direction, the shape of the piston head being adapted to the opening, being able to extend into the opening to seal the opening, and the free end of the piston head being used to abut against the end of the part; and

[0008] a lubricating oil storage tank, located above the housing and capable of being connected to the inner cavity through the first through hole;

[0009] Wherein, the end of the component extends into the opening.

[0010] Optionally, the piston head is made of silicone.

[0011] Optionally, a groove is further provided on the end surface of the piston head on the side close to the opening for the end of a part to extend therein, and the piston head is spaced apart from the sealing ring in the transverse direction.

[0012] Optionally, the housing includes a lubrication joint and a sleeve that are sleeved with each other in a transverse direction, and the lubrication joint and the sleeve are sleeved to form the inner cavity;

[0013] The first through hole is arranged on the sleeve, and the opening is arranged on the lubrication joint.

[0014] Optionally, the opening includes a first hole segment and a second hole segment which are sequentially connected in the transverse direction, the second hole segment is gradually expanded toward the center of the inner cavity, and the first hole segment extends in the transverse direction for the end of the part to extend therein; and / or,

[0015] A joint sealing ring is also provided at the joint between the lubricating joint and the sleeve.

[0016] Optionally, the inner wall surface of the first hole segment is provided with a plurality of scrapers distributed along its circumference, and the plurality of scrapers are used to scrape off lubricating oil.

[0017] Optionally, each scraper blade is made of rubber.

[0018] Optionally, an oil return hole is provided on the lower side of the lubrication joint, the oil return hole can be connected to the first hole section, and the oil return hole is located between each of the scrapers and the piston head;

[0019] The lubricating device of the sealing ring further comprises an oil return storage tank, which is located below the shell and connected to the inner cavity through the oil return hole.

[0020] Optionally, the first hole section includes at least two first sections and second sections which are connected in sequence and whose diameters increase in sequence, the second section is provided with the oil return hole, and the first section is gradually expanded toward the second section;

[0021] The plurality of scrapers are located on a side of the first section facing away from the second section.

[0022] Optionally, a filling hole is provided at the upper end of the lubricating oil storage tank, and a filling cap is provided on the filling hole.

[0023] The lubrication device of the sealing ring of the present invention is provided with an inner cavity with a transverse opening in the shell for the end of the part to extend from the opening, the part of the opening facing the center of the inner cavity is gradually expanded toward the center of the inner cavity, a movable piston head is provided to match the shape of the opening for contacting the part, a lubricating oil storage tank is provided to connect with the inner cavity, and the lubricating oil in the lubricating oil storage tank naturally flows into the inner cavity through the action of gravity, when the piston head moves away from the opening, the piston head and the opening are separated to form an annular gap, the lubricating oil flows out from the annular gap to lubricate the sealing ring on the end of the part contacting the piston head, when the piston head moves close to the opening, the piston head abuts against the opening, sealing the inner cavity and avoiding the lubricating oil from overflowing, thereby quickly lubricating the sealing ring, and at the same time the annular gap can ensure that the sealing ring is evenly lubricated, avoiding the problem of hair loss during traditional brush lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the cooperation between the parts and the sealing ring in the present invention;

[0026] Figure 2 is a cross-sectional view of a sealing ring in one embodiment of the present invention;

[0027] Figure 3 for Figure 1 Structural schematic diagram of the relative position of the middle scraper and the oil return hole;

[0028] Figure 4 for Figure 1 A schematic diagram of the structure of the middle scraper;

[0029] Figure 5 for Figure 1 Schematic diagram of the structure in which the piston head and the opening form a lubricating oil channel.

[0030] Description of the accompanying drawings of the embodiments provided by the present invention:

[0031] Label name Label name 100 Lubrication device for sealing ring 13 Lubrication joints 1 case 131 Oil return hole 1a Inner cavity 14 Sleeve 11 Opening 21 Piston head 111 First hole section 211 Grooves 1111 Paragraph 1 3 Lubricating oil storage tank 1112 Paragraph 2 31 Filling hole 112 Second hole section 32 Filling cap 113 Scraper 4 Return oil storage tank 12 First through hole

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] To make the purpose, technical scheme and advantages of the embodiment of the present invention clearer, the technical scheme in the embodiment of the present invention will be described clearly and completely below. If the specific conditions are not specified in the embodiment, it is carried out according to the normal conditions or the conditions recommended by the manufacturer. If the reagents or instruments used do not specify the manufacturer, they are all conventional products that can be purchased commercially. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes, taking "A and / or B" as an example, including scheme A, or scheme B, or schemes that A and B meet at the same time. In addition, the technical schemes between the various embodiments can be combined with each other, but must be based on the ability of ordinary technicians in the field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that the combination of such technical solutions does not exist, and is not within the scope of protection required by the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present invention.

[0034] The interfaces between the engine oil passages, water passages and parts, such as the phase sensor and oil pressure sensor in contact with the oil chamber, are usually sealed by extending a cylinder from the part to the mounting hole and setting an O-ring on the cylinder, such as Figure 1 As shown in the figure, the parts that need to be installed with the engine body are sealed with the inner wall of the body mounting hole using an O-ring. The sealing ring and the inner wall of the mounting hole are interference fit. During the installation process, in order to avoid the sealing ring being scratched or flanging during the fitting, lubricating oil is usually needed to lubricate the sealing ring.

[0035] The traditional way to lubricate the sealing ring is to use a brush to apply a circle on the sealing ring. This method has the following shortcomings: 1) The lubrication efficiency of using a brush is low; 2) The lubrication is not applied evenly, and some areas are not applied enough, resulting in insufficient lubrication; 3) The brush has the risk of shedding hair, which affects the sealing effect of the sealing ring. In view of this, the present invention proposes a sealing ring lubrication device, which aims to provide a sealing ring lubrication device 100 that can quickly lubricate and improve lubrication uniformity. Among them, Figure 1 It is a schematic diagram of the cooperation between the parts and the sealing ring in the present invention; Figure 2 is a cross-sectional view of a sealing ring in one embodiment of the present invention; Figure 3 for Figure 1 Structural schematic diagram of the relative position of the middle scraper and the oil return hole; Figure 4 for Figure 1 A schematic diagram of the structure of the middle scraper; Figure 5 for Figure 1 Schematic diagram of the structure in which the piston head and the opening form a lubricating oil channel.

[0036] In the sealing ring lubrication device 100 provided by the present invention, the sealing ring lubrication device 100 includes: a shell 11, a piston assembly 22 and a lubricating oil storage tank 33, the shell 1 has an inner cavity 1a, the inner cavity 1a is provided with an opening 11 along the transverse wall, the part of the opening 11 facing the center of the inner cavity 1a is gradually expanded toward the center of the inner cavity 1a, and the upper wall of the inner cavity 1a is provided with a first through hole 12; the piston assembly 2 includes a piston head 21 movably installed in the inner cavity 1a of the shell 1 along the transverse direction, the shape of the piston head 21 is adapted to the opening 11, and can be extended into the opening 11 to seal the opening 11, and the free end of the piston head 21 is used to abut against the part end 1011; the lubricating oil storage tank 3 is located above the shell 1, and can be connected to the inner cavity 1a through the first through hole 12; wherein, the part end 1011 extends from the opening 11.

[0037] It should be noted that the piston head 21 can be a conical piston head 21 that matches the shape of the opening 11 to ensure the sealing of the inner cavity 1a. The piston head 21 can move laterally in the inner cavity 1a, which can be achieved by sequentially arranging a piston rod, a piston rod sealing ring 1012 and a spring laterally on the side of the piston head 21 away from the opening 11, and the spring can be fixedly connected to the bottom wall of the inner cavity 1a. In this way, a cavity for accommodating lubricating oil is formed between the piston head 21, the piston rod sealing ring 1012 and the housing 1, and the piston head 21 is pushed by the part 101, thereby compressing the spring, so that the piston head 21 leaves the opening 11, and a lubricating oil outflow channel is formed between the piston head 21 and the opening 11, so that the lubricating oil flows out of the cavity accommodating the lubricating oil to lubricate the sealing ring 1012 at the end 1011 of the part. When lubrication is completed, the part end 1011 leaves the piston head 21, and the spring recovers its elastic deformation, so that the piston head 21 moves toward the opening 11 and abuts against the opening 11, forming a sealed inner cavity 1a to prevent the lubricating oil from flowing out. The present invention does not limit the specific implementation form of the transverse movable installation of the piston head 21 in the inner cavity 1a of the housing 1, and it can also be implemented in other ways, as long as the piston head 21 can be both sealed and leave the opening 11.

[0038] The lubricating device 100 of the sealing ring of the present invention is provided with an inner cavity 1a having a transverse opening 11 in the housing 1 for allowing the end 1011 of the part to extend from the opening 11, and the portion of the opening 11 toward the center of the inner cavity 1a is gradually expanded toward the center of the inner cavity 1a, and a movable piston head 21 is provided to match the shape of the opening 11 for contacting the part 101, and a lubricating oil storage tank 3 is provided above the housing 1 to communicate with the inner cavity 1a, and the lubricating oil in the lubricating oil storage tank 3 naturally flows into the inner cavity 1a through the action of gravity, and the piston When the head 21 moves away from the opening 11, the piston head 21 separates from the opening 11 to form an annular gap, and the lubricating oil flows out from the annular gap to lubricate the sealing ring 1012 on the end 1011 of the part in contact with the piston head 21. When the piston head 21 moves close to the opening 11, the piston head 21 abuts against the opening 11 to seal the inner cavity 1a and prevent the lubricating oil from overflowing, thereby quickly lubricating the sealing ring 1012. At the same time, the annular gap can ensure that the sealing ring 1012 is evenly lubricated, avoiding the problem of hair loss during traditional brush lubrication.

[0039] In order to facilitate the rapid addition of new lubricating oil after the lubricating oil is used up and avoid repeatedly removing the lubricating oil storage tank 3, a filling hole 31 is provided at the upper end of the lubricating oil storage tank 3, and a filling cap 32 is provided on the filling hole 31. Lubricating oil can be directly added to the filling hole 31 by unscrewing the filling cap 32, avoiding the contamination of the bottle mouth caused by repeatedly unscrewing the lubricating oil storage tank 3, which affects the use.

[0040] In order to ensure the sealing between the piston head 21 and the opening 11, the piston head 21 is made of silicone. Through the elasticity and flexibility of silicone, it fully contacts the inner wall of the opening 11 of the inner cavity 1a, avoiding the overflow of lubricating oil when the sealing ring 1012 lubrication device is not used, avoiding the contamination of the opening 11 and the formation of sludge. It should be noted that in order to further ensure the sealing between the piston head 21 and the housing 1, the housing 1 can be made of metal, such as copper or stainless steel, which does not react with lubricating oil.

[0041] When the piston head 21 is in contact with the part end 1011, it is in an abutting state, not a fixed state, so there may be a situation where the contact is not firm and slips off. In order to make the contact point of the piston head 21 as small as possible when it is in contact with the part end 1011, the end face of the piston head 21 close to the opening 11 is also provided with a groove 211 for the part end 1011 to extend into, and the piston head 21 is spaced apart from the sealing ring 1012 in the horizontal direction. In this way, the part end 1011 can penetrate into the groove 211 at the end of the piston head 21, thereby limiting the end. At the same time, the piston head 21 and the sealing ring 1012 are spaced apart, which can avoid the problem of uneven lubrication caused by the contact of the sealing ring 1012 with the piston head 21 when the lubricating oil flows out. Specifically, the shape and depth of the groove 211 can be adjusted according to the size and shape of the part end 1011 to adapt to the size of the part end 1011.

[0042] In order to facilitate the use of the same type of lubricant for parts 101 of different models, and to avoid frequent replacement of lubricants when parts 101 of the same model need different lubricants, the housing 1 includes a lubricant joint 13 and a sleeve 14 that are mutually sleeved in the transverse direction, and the lubricant joint 13 and the sleeve 14 are sleeved to form the inner cavity 1a; the first through hole 12 is provided on the sleeve 14, and the opening 11 is provided on the lubricant joint 13. In this way, when it is necessary to replace parts 101 of different models, only the lubricant joint 13 needs to be replaced, and the entire sealing ring 1012 lubricating device does not need to be replaced. In addition, the provision of the components is also conducive to manufacturing, and when there is a problem with the internal piston assembly 2, it can be easily replaced.

[0043] When the components are provided, in order to facilitate use and ensure sealing, a joint sealing ring 1012 is provided at the joint of the lubricating joint 13 and the sleeve 14. Specifically, the lubricating joint 13 and the sleeve 14 can be matched in a threaded form, a snap-fit ​​form, or a magnetic form.

[0044] In order to ensure that the part end 1011 does not shake when it penetrates into the opening 11, the opening 11 includes a first hole section 111 and a second hole section 112 which are connected in sequence in the transverse direction. The second hole section 112 is gradually expanded toward the center of the inner cavity 1a. The first hole section 111 extends in the transverse direction for the part end 1011 to extend therein. In this way, the part 101 first passes through the first hole section 111 when extending therein, and then contacts the lubrication joint 13. The first hole section 111 can play a role in circumferential positioning of the part 101 to prevent the part 101 from slipping.

[0045] It should be noted that a joint sealing ring 1012 is also provided at the joint of the lubrication joint 13 and the sleeve 14, and the opening 11 includes a first hole section 111 and a second hole section 112 which are sequentially connected in the transverse direction. The second hole section 112 is gradually expanded toward the center of the inner cavity 1a, and the first hole section 111 extends in the transverse direction for the part end 1011 to extend into. They can be set at the same time or separately. When set at the same time, it can meet different usage requirements and ensure stability when the part 101 is inserted.

[0046] After lubrication, the sealing ring 1012 on the part 101 may have too much lubricating oil, which on the one hand wastes resources, and on the other hand too much lubricating oil will produce sludge. In order to scrape off the excess lubricating oil on the surface of the sealing ring 1012 after lubrication, the inner wall surface of the first hole section 111 is provided with a plurality of scrapers 113 distributed along its circumference, and the plurality of scrapers 113 are used to scrape off the lubricating oil.

[0047] In order not to affect the insertion and extension of the part 101 and to ensure the scraping of excess lubricating oil, each scraper 113 is made of rubber. A plurality of scrapers 113 can be enclosed to form an annular scraper 113. After the lubrication of the sealing ring 1012 is completed, the part 101 is taken out and passes through the annular scraper 113. The inner diameter of the annular scraper 113 is close to or slightly smaller than the outer diameter of the sealing ring 1012. During the removal process, the rib of the annular scraper 113 can scrape off excess lubricating oil on the outer ring of the sealing ring 1012 and leave it on the inner side of the lubrication joint 13. After the part 101 is taken out, it can ensure that the lubricating oil fully lubricates the sealing ring 1012, and it can also ensure that no excess lubricating oil is brought out. A uniform lubricating oil film can avoid excessive lubricating oil from causing secondary pollution to the assembly process.

[0048] In order to recover the scraped lubricating oil, a return oil hole 131 is provided on the lower side of the lubricating joint 13, and the return oil hole 131 can be connected to the first hole section 111, and the return oil hole 131 is located between each of the scrapers 113 and the piston head 21; the lubricating device 100 of the sealing ring also includes a return oil storage tank 4, which is located below the housing 1 and is connected to the inner cavity 1a through the return oil hole 131. In this way, after the lubrication of the sealing ring 1012 is completed, the scraped excess lubricating oil will pass through the first hole section 111 and the return oil hole 131 under the action of gravity, and flow into the return oil container, saving lubricating oil. In order to facilitate the transfer of the return oil storage tank 4 after it is filled with the recovered lubricating oil and avoid repeatedly removing the return oil storage tank 4, a filling hole 31 can be provided at the lower end of the return oil storage tank 4, and a filling cap 32 is provided on the filling hole 31. The recovered lubricating oil can be directly transferred by unscrewing the filling cap 32, avoiding the contamination of the bottle mouth caused by unscrewing the return oil storage tank 4 multiple times, which affects the use.

[0049] In order to facilitate the recovered lubricating oil to flow more smoothly to the oil return hole 131, the first hole section 111 at least includes two first sections 1111 and second sections 1112 which are connected in sequence and have increasing diameters in sequence, the second section 1112 is provided with the oil return hole 131, the first section 1111 is gradually expanded toward the second section 1112, and the plurality of scrapers 113 are located on the side of the first section 1111 away from the second section 1112. That is, the inner diameter of the first hole section 111 between the baffle and the oil return hole 131 is gradually expanded, so that the excess lubricating oil scraped by the scraper 113 can flow smoothly into the oil return hole 131 along the inclined inner wall. It should be noted that the first hole section 111 may only include the first section 1111 and the second section 1112, the first section 1111 is gradually expanded toward the second section 1112, the scraper 113 is arranged on the side of the first section 1111 away from the second section 1112, that is, the scraper 113 is arranged at the opening 11, and the oil return hole 131 is arranged in the second section 1112. The first hole section 111 may also include a third section, wherein the third section is arranged on the side of the scraper 113 away from the first section 1111, forming three sections with different inner diameters, and the present invention is not limited thereto.

[0050] The lubricating device 100 of the sealing ring of the present invention is provided with an inner cavity 1a having a transverse opening 11 in the housing 1 for allowing the end 1011 of the part to extend from the opening 11, the portion of the opening 11 toward the center of the inner cavity 1a is gradually expanded toward the center of the inner cavity 1a, a movable piston head 21 is provided to match the shape of the opening 11 for contacting the part 101, a lubricating oil storage tank 3 is provided to communicate with the inner cavity 1a, and the lubricating oil in the lubricating oil storage tank 3 naturally flows into the inner cavity 1a through the action of gravity, and the piston head 21 When moving away from the opening 11, the piston head 21 separates from the opening 11 to form an annular gap, and the lubricating oil flows out from the annular gap to lubricate the sealing ring 1012 on the end 1011 of the part in contact with the piston head 21. When the piston head 21 moves closer to the opening 11, the piston head 21 abuts against the opening 11 to seal the inner cavity 1a and prevent the lubricating oil from overflowing, thereby quickly lubricating the sealing ring 1012. At the same time, the annular gap can ensure that the sealing ring 1012 is evenly lubricated, avoiding the problem of hair loss during traditional brush lubrication.

[0051] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. For those skilled in the art, the present invention may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the patent protection scope of the present invention.

Claims

1. A sealing ring lubricating device, used for lubricating a sealing ring mounted on the end of a part, characterized in that: include: The housing has an inner cavity, wherein the inner cavity is provided with an opening along a transverse wall surface, wherein a portion of the opening toward the center of the inner cavity is gradually expanded toward the center of the inner cavity, and a first through hole is provided on an upper wall surface of the inner cavity; A piston assembly, comprising a piston head movably mounted in the inner cavity of the housing in a transverse direction, the shape of the piston head being adapted to the opening, being able to extend into the opening to seal the opening, and the free end of the piston head being used to abut against the end of the part; as well as, a lubricating oil storage tank, located above the housing and capable of being connected to the inner cavity through the first through hole; Wherein, the end of the part extends into the opening; The end surface of the piston head close to the opening is also provided with a groove for the end of the part to extend into, and the piston head is spaced apart from the sealing ring in the transverse direction; The opening includes a first hole section and a second hole section which are sequentially connected in the transverse direction, the second hole section is gradually expanded toward the center of the inner cavity, and the first hole section extends in the transverse direction for the end of the part to extend therein.

2. The lubricating device for the sealing ring according to claim 1, characterized in that: The piston head is made of silicone.

3. The lubricating device for the sealing ring according to claim 1, characterized in that: The housing comprises a lubricating joint and a sleeve which are sleeved with each other in a transverse direction, and the lubricating joint and the sleeve are sleeved to form the inner cavity; The first through hole is arranged on the sleeve, and the opening is arranged on the lubrication joint.

4. The lubricating device for the sealing ring according to claim 3, characterized in that: A joint sealing ring is also provided at the joint between the lubricating joint and the sleeve.

5. The lubricating device for the sealing ring according to claim 4, characterized in that: The inner wall surface of the first hole section is provided with a plurality of scrapers distributed along its circumference, and the plurality of scrapers are used to scrape off lubricating oil.

6. The lubricating device for the sealing ring according to claim 5, characterized in that: The scraper blades are made of rubber.

7. The lubricating device for a sealing ring according to claim 5, characterized in that: An oil return hole is provided at the lower side of the lubrication joint, the oil return hole can be connected to the first hole section, and the oil return hole is located between each of the scrapers and the piston head; The lubricating device of the sealing ring further comprises an oil return storage tank, which is located below the shell and connected to the inner cavity through the oil return hole.

8. The lubricating device for a sealing ring according to claim 7, characterized in that: The first hole section at least comprises two first and second sections which are connected in sequence and whose diameters increase in sequence, the second section is provided with the oil return hole, and the first section is gradually expanded toward the second section; The plurality of scrapers are located on a side of the first section facing away from the second section.

9. The lubricating device for a sealing ring according to claim 1, characterized in that: The upper end of the lubricating oil storage tank is provided with a filling hole, and a filling cap is provided on the filling hole.

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