A method of configuring a sliding sleeve to avoid grease buildup

Abstract

The application provides a sliding sleeve configuration method for avoiding grease accumulation, which comprises the following steps: S1, prefabricating a sliding lining plate, the sliding lining plate body is a rectangular plate-shaped body, the plate-shaped body has an outer side and an inner side, a middle position of the outer side is designed to be concave to form an oil passing channel for grease to run away, a part of the outer side that is attached to an outer sliding tube forms a sliding friction surface, the height of the oil passing channel is lower than the height of the sliding friction surface, an oil passing groove and an oil storage groove are designed in the oil passing channel, and the depth of the oil storage groove is greater than the depth of the oil passing groove; S2, installing the sliding lining plate, the sliding sleeve comprises an inner sliding tube and an outer sliding tube, and a plurality of sliding lining plates are installed on the outer side wall of the upper end of the inner sliding tube at intervals; S3, smearing lubricating oil; and S4, assembling the sliding sleeve; the sliding lining plate can provide a channel for grease and also provide sufficient supporting force to ensure that there is a certain gap between the inner and outer sliding tubes, so as to reduce the sliding friction force, avoid friction noise, and also prevent the grease from overflowing.

Description

Technical Field

[0001] This invention relates to the field of sliding sleeve configuration, and in particular to a sliding sleeve configuration method to avoid grease buildup. Background Technology

[0002] With the advocacy of the green office concept of alternating between sitting and standing, height-adjustable desks have become increasingly common in people's lives in recent years. The legs of height-adjustable desks are designed to be height-adjustable, and the legs are composed of inner and outer sliding tubes. The outer sliding tube is fitted over the inner sliding tube, and the height of the desk is adjusted by sliding the two sliding tubes up and down. In order to reduce the friction between the inner and outer sliding tubes and make the up and down sliding process smoother, a sliding liner is often installed at the contact point of the tubes. The sliding liner acts on the outer wall of the inner sliding tube or the inner wall of the outer sliding tube. Since the sliding liner has a certain thickness, it ensures the distance between the inner and outer sliding tubes, so that the inner and outer sliding tubes no longer directly contact each other, thus eliminating the friction between the inner and outer sliding tubes to a certain extent. At the same time, a layer of lubricating oil can be applied to the inner wall of the outer sliding tube. The sliding liner and the lubricating oil work together to effectively reduce frictional resistance and reduce the noise generated by sliding friction.

[0003] For example, the pipe friction plate and lifting column disclosed in patent number CN214533886U include an annular frame and a friction block that cooperate with the inner and outer sliding sleeves of the table leg. The friction block is the aforementioned sliding liner. The friction block is distributed circumferentially along the annular frame and can fill the gap between the annular frame and the inner wall of the sleeve. The part of the friction block that is in contact with the inner wall of the sleeve is the sliding friction surface, which is a smooth surface. Or, as disclosed in patent number CN211510883U, a sleeve assembly and its application in a lifting column, the friction plate mentioned therein is the aforementioned sliding liner. The part of the friction plate that is in contact with the inner wall of the sleeve is the sliding friction surface, and two oil storage grooves are provided on the sliding friction surface.

[0004] The aforementioned friction blocks or friction plates, also known as sliding liners, may encounter the following problems during actual use: After applying lubricating oil to the sliding liners, some of the lubricating oil will be pushed to the upper and lower sides of the sleeve by the upper and lower ends of the sliding liners after multiple sliding operations, preventing it from being evenly spread on the inner wall of the sleeve. As a result, the lubricating oil will accumulate. When the height of the accumulated lubricating oil exceeds the gap between the inner and outer sliding tubes, the lubricating oil will stain the outside from the sleeve connection, affecting the aesthetics and comfort of use. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention aims to provide a sliding sleeve configuration method that avoids grease buildup. This method differs from existing conventional structures by installing a sliding liner at the sliding sleeve connection. The sliding liner includes a plate-shaped body with an outer surface that fits against the outer sliding tube and an inner surface that fits against the inner sliding tube. A recessed area in the middle of the outer surface forms an oil passage for grease to flow through. The oil passage contains an oil groove and an oil reservoir. Compared to traditional oiling methods, grease can be directly applied to the oil reservoir. The portion of the outer surface of the plate-shaped body that fits against the outer sliding tube forms a sliding friction surface, and the height of the oil passage is lower than the height of the sliding friction surface. Both ends of the oil passage are connected to the edges of the plate-shaped body, allowing grease to slide within the oil passage instead of accumulating at the ends of the sliding liner, thus solving the problem of grease overflow affecting aesthetics.

[0006] The solution of this invention is implemented as follows:

[0007] A method for configuring a sliding sleeve to avoid grease buildup.

[0008] S1, prefabricated sliding liner, the main body of the sliding liner is a rectangular plate-shaped body, the plate-shaped body has an outer side and an inner side, the middle of the outer side is designed to be concave to form an oil passage for grease to flow through, along the extension direction of the oil passage, the two ends of the oil passage are respectively connected to the edge of the plate-shaped body, the part of the outer side of the plate-shaped body that is in contact with the outer sliding tube forms a sliding friction surface, the height of the oil passage is lower than the height of the sliding friction surface, and an oil channel and an oil storage channel are designed in the oil passage, the oil storage channel is set close to the center of the plate-shaped body, while the oil channel is relatively far away from the center of the plate-shaped body, and the depth of the oil storage channel is greater than the depth of the oil channel;

[0009] S2, Install sliding liner plates. The sliding sleeve includes an inner sliding tube and an outer sliding tube. Multiple sliding liner plates are installed at intervals on the outer side wall at the upper end of the inner sliding tube.

[0010] S3, Apply lubricating oil. Apply an appropriate amount of lubricating oil to the oil passage of the sliding liner.

[0011] S4. Assemble the sliding sleeve. First, assemble the inner sliding tube and the outer sliding tube together. The outer sliding tube is sleeved outside the inner sliding tube. Then, install the connecting seat at the sliding exposed end of the inner sliding tube. Install the table support wing on the connecting seat. Because of the existence of the sliding liner, a gap is left between the inner wall of the outer sliding tube and the outer wall of the inner sliding tube. The outer sliding tube can slide axially back and forth along the inner sliding tube. Some grease is stored in the oil reservoir, and some grease flows back and forth along the oil passage.

[0012] Preferably, the inner surface of the plate-shaped body is provided with a vertically outward extending mounting portion, which is configured to connect with a pre-set mounting hole on the outer wall of the inner sliding tube. In order to ensure that the sliding liner can be tightly connected with the inner sliding tube, a mounting portion is provided on the inner surface of the plate-shaped body that contacts the inner sliding tube, and this mounting portion is provided to extend outward perpendicular to the inner surface.

[0013] Preferably, a central hole is punched in the middle of the plate-shaped body, and the central hole extends through the mounting portion at the bottom of the plate-shaped body. When too much grease is added, the above design allows the excess grease to flow inward through the central hole instead of overflowing onto the outer sliding tube.

[0014] Preferably, the plate-shaped body is divided into two symmetrical semi-channels along the centerline of the central hole. The oil reservoir is located on the inner side of the semi-channel, and the oil passage is located on the outer side. This symmetrical structure reduces manufacturing difficulty and saves production costs. The oil reservoir is located near the central hole, while the oil passage is located relatively far from it. Furthermore, the depth of the oil reservoir is greater than that of the oil passage, allowing grease to be introduced through the oil passage and directly applied to the oil reservoir during sliding. Of course, when the amount of oil is large, it can also be drained through the oil passage.

[0015] Preferably, the oil passage and oil reservoir are designed as polygons to form a tortuous oil passage. To reduce the probability of grease buildup on the inner and outer sliding tubes, the oil reservoir and oil passage are shaped as polygons, allowing the grease to stay on the sliding liner for a longer time and improving the lubrication effect.

[0016] Preferably, triangular protrusions extend in opposite directions from the two side walls of the middle section of the semi-passage. The apexes of the triangular protrusions are close to each other but spaced apart, with the apexes located at the junction of the oil reservoir and the oil passage. Each triangular protrusion has a first edge and a second edge, with the first edge inside the oil reservoir and the second edge inside the oil passage, forming an inclined oil passage guide. By providing triangular protrusions on the side walls of the oil passage and cooperating with the polygonal oil reservoir and oil passage, the grease stays and flows within the sliding lining for a longer time during the sliding of the inner and outer sliding pipes, thus enhancing the lubrication effect.

[0017] Preferably, the oil passage has a short column protruding upwards in the center, and the oil storage tank has a tall column protruding upwards in the center. The outer surfaces of both the short and tall columns are flush with the sliding friction surface. Both the short and tall columns are square, and their diagonals are set along the length of the oil passage. This makes the adjacent two sides of the short column parallel to the adjacent second edge and forming an inclined outer channel with each other. The adjacent two sides of the tall column are parallel to the adjacent first edge and forming an inclined inner channel with each other. The inner inclined channel and the oppositely connected outer inclined channel form an inclined channel. This inclined channel intersects with another inclined channel of the same type in an X-shape, increasing the time and resistance for grease to pass through. This allows the grease to flow, but also creates resistance during the flow, increasing the pause time and keeping the grease as much as possible within the oil passage. In addition, the sliding liner reduces the friction between the inner and outer sliding tubes while providing sufficient support to ensure a certain gap between them. Therefore, a tall column is installed in the oil storage tank, and a short column is installed in the oil passage. The surfaces of the tall and short columns are in contact with the outer sliding tube to provide support.

[0018] Preferably, both ends of the plate-shaped body are inclined outwards along the extension direction of the oil passage. In order to prevent grease from accumulating at both ends of the plate-shaped body, the two ends of the plate-shaped body are set to slope outwards, so as to ensure that the grease can slide up and down in the oil passage with the friction of the outer sliding tube, and will not stay at both ends of the plate-shaped body, thus preventing grease from accumulating or overflowing.

[0019] Preferably, the surface of the tall column in the oil reservoir is recessed to reduce frictional resistance.

[0020] Preferably, the sliding friction surface is provided with a number of holes to reduce resistance.

[0021] The several holes on the outer surface of the plate-shaped body and the depression on the surface of the tall column of the oil storage tank can reduce the contact area between the outer sliding tube and the sliding liner, thereby reducing the frictional resistance between the outer sliding tube and the sliding liner. At the same time, it can also store a small amount of grease and increase the service life of the grease.

[0022] The principle and beneficial effects of the present invention, which adopts the above technical solution, are as follows:

[0023] The purpose of this invention is to provide a sliding sleeve configuration method to avoid grease accumulation. By installing a sliding liner at the sliding sleeve connection, the middle of the outer surface of the liner's plate-like body, which is in contact with the outer sliding tube, is recessed to form an oil passage for grease flow. The oil passage contains an oil channel and an oil reservoir. Compared to traditional oiling methods, grease can be directly applied to the oil reservoir. When the inner and outer tubes slide against each other, the grease in the reservoir slides up and down, reducing resistance and preventing grease accumulation in the inner and outer tubes, which would affect aesthetics. The two ends of the oil passage are connected to the edges of the plate-like body, forming a tortuous, non-enclosed passage for grease to flow. The portion of the plate-like body in contact with the outer sliding tube is the sliding friction surface, and the height of the oil passage is lower than the height of the sliding friction surface. Therefore, the sliding liner provides a flow path for grease while also providing sufficient support to ensure a certain gap between the inner and outer sliding tubes, thereby reducing sliding friction, avoiding noise during friction, and preventing grease accumulation. Attached Figure Description

[0024] Figure 1 This is a three-dimensional view of the sliding sleeve.

[0025] Figure 2 A three-dimensional view of the connection between the sliding liner and the inner tube;

[0026] Figure 3 A three-dimensional view of the sliding liner;

[0027] Figure 4 This is a front view of the sliding liner from another angle.

[0028] Figure 5 This is a partial front view of the sliding liner;

[0029] Figure 6 Flowchart of the steps for configuring a sliding sleeve;

[0030] The reference numerals in the attached drawings are as follows: 1-plate-shaped body, 2-inner sliding tube, 21-connecting seat, 3-outer sliding tube, 4-sliding sleeve, 41-table support wing, 5-outer side, 6-inner side, 7-oil passage, 8-sliding friction surface, 9-oil groove, 10-oil reservoir, 11-mounting part, 12-center hole, 13-half passage, 14-triangular protrusion, 141-first edge, 142-second edge, 15-short column, 16-tall column, 17-outer inclined channel, 18-inner inclined channel, 19-recess, 20-hole. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0033] The specific implementation of this invention is as follows:

[0034] like Figure 1-6 As shown, the present invention provides a method for configuring a sliding sleeve to avoid grease buildup, the specific steps of which are as follows:

[0035] S1, prefabricated sliding liner, the main body of the sliding liner is a rectangular plate-shaped body 1, the plate-shaped body 1 has an outer side 5 and an inner side 6 with opposite sides. In order to make the sliding liner tightly connected with the inner sliding tube 2, an installation part 11 is provided on the inner side 6. The middle position of the outer side 5 is designed to be recessed to form an oil passage 7 for grease to flow, so as to prevent grease from accumulating on the inner sliding tube 2 and the outer sliding tube 3 after long-term use and affecting the appearance. Along the extension direction of the oil passage 7, the two ends of the oil passage 7 are respectively connected to the edge of the plate-shaped body 1. The part of the outer side 5 of the plate-shaped body 1 that is in contact with the outer sliding tube 3 forms the sliding friction surface 8. The height of the oil passage 7 is lower than the height of the sliding friction surface 8. An oil channel 9 and an oil storage channel 10 are designed in the oil passage 7. The oil storage channel 10 is located close to the center of the plate-shaped body 1, while the oil channel 9 is relatively far away from the center of the plate-shaped body 1. The depth of the oil storage channel 10 is greater than the depth of the oil channel 9.

[0036] S2, Install the sliding liner. The sliding sleeve 4 includes an inner sliding tube 2 and an outer sliding tube 3. Multiple mounting holes are provided at intervals on the outer side wall of the upper end of the inner sliding tube 2. The mounting part 11 of the sliding liner is connected to the preset mounting holes on the outer side wall of the inner sliding tube 2.

[0037] S3, apply lubricating oil. Apply an appropriate amount of lubricating oil to the oil passage 7 of the sliding liner in advance. The lubricating oil stays in the oil reservoir 10.

[0038] S4, Assemble the sliding sleeve 4. First, assemble the inner sliding tube 2 and the outer sliding tube 3 together. The outer sliding tube 3 is fitted outside the inner sliding tube 2. Then, install the connecting seat 21 on the sliding exposed end of the inner sliding tube 2. Install the table support wing 41 on the connecting seat 21. Because of the existence of the sliding liner, a gap is left between the inner wall of the outer sliding tube 3 and the outer wall of the inner sliding tube 2. The outer sliding tube 3 can slide axially back and forth along the inner sliding tube 2. Some grease is stored in the oil storage tank 10, and some grease flows back and forth along the oil passage 7.

[0039] Specifically, such as Figure 3-5 As shown, in step S1, a central hole 12 is punched in the middle of the plate-shaped body 1, and the central hole 12 penetrates the mounting part 11 at the bottom of the plate-shaped body 1. The central hole 12 corresponds to the mounting hole on the outer side wall of the inner sliding tube 2. When too much grease is added, the above design allows the excess grease to flow through the central hole 12 to the inner side wall of the inner sliding tube 2, rather than overflowing onto the outer sliding tube 3.

[0040] Furthermore, such as Figure 3-5 As shown, the plate-shaped body 1 is divided into two symmetrical structures along the center line of the central hole 12. The plate-shaped body 1 is divided into two symmetrical semi-passages 13 on both sides of the central hole 12, which reduces the manufacturing difficulty and saves production costs. The oil storage tank 10 is located on the inner side of the semi-passage 13, close to the central hole 12, while the oil passage 9 is located on the outer side of the semi-passage 13, relatively far from the central hole 12. The depth of the oil storage tank 10 is greater than the depth of the oil passage 9, so the grease can be introduced into the oil storage tank 10 through the oil passage 9 and directly applied to the oil storage tank 10 when sliding. Of course, when the amount of oil is large, it can also be discharged through the oil passage 9.

[0041] Furthermore, such as Figure 5As shown, since the grease exists to reduce the friction between the inner sliding tube 2 and the outer sliding tube 3, the grease will move up and down with the sliding of the outer sliding tube 3. After repeated up and down movement, the grease will inevitably accumulate on the inner sliding tube 2 and the outer sliding tube 3. In order to reduce the probability of grease accumulation, both the oil passage 9 and the oil storage tank 10 are designed in polygonal shapes to form a tortuous oil passage 7. In the middle part of the semi-passage 13, triangular protrusions 14 extend in opposite directions from both sides of the side walls. The apexes of the triangular protrusions are close to each other and leave a gap. The apexes of the triangular protrusions are located at the junction of the oil storage tank 10 and the oil passage 9. The triangular protrusions 14 have There are a first edge 141 and a second edge 142. The first edge 141 is located in the oil storage tank 10, and the second edge 142 is located in the oil passage 9. The first edge 141 and the second edge 142 form an inclined oil passage guide, which allows the plate-shaped body 1 to form a tortuous passage in the direction of friction of the outer sliding tube 3. This allows the grease to flow through most of the area in the oil passage 7 when it moves up and down, and stays in the oil passage 7 for a longer time. The grease is pushed less often, thus ensuring that the grease can slide up and down in the oil passage 7 with the friction of the outer sliding tube 3, and will not stay at both ends of the plate-shaped body 1, which will eventually cause grease accumulation or overflow.

[0042] And, as Figure 3-5 As shown, the outer surface 5 of the plate-shaped body 1, which is in contact with the outer sliding tube 3, is the sliding friction surface 8. Furthermore, the height of the oil passage 7 is lower than the height of the sliding friction surface 8, thereby reducing the sliding friction between the inner sliding tube 2 and the outer sliding tube 3, and preventing grease buildup. Additionally, a short, upward-protruding column 15 is located in the center of the oil passage 9, and a tall, upward-protruding column 16 is located in the center of the oil storage tank 10. The outer surfaces of both the short column 15 and the tall column 16 are flush with the sliding friction surface 8, providing sufficient support to ensure a certain gap between the inner and outer sliding tubes. In the middle, both the short column 15 and the tall column 16 are square, and their diagonals are set along the length of the oil passage 7. This makes the adjacent two sides of the short column 15 parallel to the adjacent second edge 142 and forming an inclined outer channel 17 between them. The adjacent two sides of the tall column 16 are parallel to the adjacent first edge 141 and forming an inclined inner channel 18 between them. This allows the lubricating oil to flow smoothly back and forth in the oil passage 9 and oil storage tank 10 of the sliding liner when the sliding sleeve slides up and down during use, effectively playing a lubricating role.

[0043] Furthermore, the surface of the tall column 16 of the oil storage tank 10 has a recess 19 formed to reduce frictional resistance, and the sliding friction surface 8 is also provided with several holes 20 to reduce resistance, such as... Figure 4-5As shown, these holes 20 and recesses 19 can reduce the contact area between the outer sliding tube 3 and the sliding liner, thereby reducing the frictional resistance between the outer sliding tube 3 and the sliding liner, and can also store a small amount of grease, increasing the service life of the grease.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A method for avoiding grease accumulation in a sliding sleeve arrangement, characterized by the following steps: S1, preparing a sliding lining plate, the main part of the sliding lining plate is a rectangular plate body (1), the plate body (1) has a front and a back outer side (5) and an inner side (6), the middle of the outer side (5) is designed to be concave to form an oil passage (7) for grease to run, along the extension direction of the oil passage (7), the two ends of the oil passage (7) are communicated with the edges of the plate body (1) respectively, the part of the outer side (5) of the plate body (1) that is in contact with the outer sliding tube (3) forms a sliding friction surface (8), the height of the oil passage (7) is lower than the height of the sliding friction surface (8), the oil passage (7) is designed with an oil passage groove (9) and an oil storage groove (10), the oil storage groove (10) is arranged close to the center of the plate body (1), and the oil passage groove (9) is arranged relatively far from the center of the plate body (1), the depth of the oil storage groove (10) is greater than the depth of the oil passage groove (9); S2, installing the sliding lining plate, the sliding sleeve (4) includes an inner sliding tube (2) and an outer sliding tube (3), a plurality of sliding lining plates are installed on the outer side wall of the upper end of the inner sliding tube (2) at intervals; S3, applying lubricating oil, an appropriate amount of lubricating oil is applied to the oil passage (7) of the sliding lining plate; S4, assembling the sliding sleeve (4), the inner sliding tube (2) and the outer sliding tube (3) are assembled together, the outer sliding tube (3) is sleeved outside the inner sliding tube (2), a connecting seat (21) is installed on the sliding exposed end of the inner sliding tube (2), and a table plate supporting wing (41) is installed on the connecting seat (21); because of the presence of the sliding lining plate, a gap is left between the inner side wall of the outer sliding tube (3) and the outer side wall of the inner sliding tube (2), the outer sliding tube (3) can axially reciprocate along the inner sliding tube (2), part of the grease is stored in the oil storage groove (10), and part of the grease runs back and forth along the oil passage (7). The inner side (6) of the plate body (1) is provided with a mounting portion (11) extending vertically outward, and the mounting portion (11) is configured to be connected with a mounting hole pre-designed on the outer wall of the inner sliding tube (2).

3. The method according to claim 2, characterized in that in step S1, a center hole (12) is punched in the middle of the plate body (1), and the center hole (12) penetrates the mounting portion (11) at the bottom of the plate body (1). The plate body (1) is divided into two symmetrical half passages (13) along the center line of the center hole (12), the oil storage groove (10) is located on the inner side of the half passage (13), and the oil passage groove (9) is located on the outer side of the half passage (13). The oil passage groove (9) and the oil storage groove (10) are designed as polygons to form a zigzag oil passage (7).

2. The method of claim 1, wherein the method further comprises: ​ ​ 4. The method of claim 3, wherein the sliding sleeve assembly is configured to avoid grease buildup. ​ 5. A method of providing a sliding sleeve arrangement to avoid grease build-up according to claim 4, characterised in that: ​ 6. A method of providing a sliding sleeve arrangement to avoid grease build-up according to claim 5, characterized in that: The triangular protrusions (14) are extended from the two side walls of the middle part of the half passage (13) in opposite directions, the tips of the triangular protrusions are close to each other and leave a gap, and the tips of the triangular protrusions are located at the junction of the oil storage groove (10) and the oil passage (9); the triangular protrusions (14) have a first edge (141) and a second edge (142), the first edge (141) is located in the oil storage groove (10), the second edge (142) is located in the oil passage (9), and the first edge (141) and the second edge (142) form an inclined oil path guide.

7. The method of claim 6, wherein the method further comprises: The central part of the oil passage (9) is provided with a low column (15) protruding upward, and the central part of the oil storage groove (10) is provided with a high column (16) protruding upward, the outer surfaces of the low column (15) and the high column (16) are flush with the sliding friction surface (8); wherein the low column (15) and the high column (16) are square, and the diagonal lines of the two are arranged along the length direction of the oil passage (7), so that the two adjacent side edges of the low column (15) are respectively parallel to the adjacent second edge (142) and form an inclined outer chute (17) between each other, and the two adjacent side edges of the high column (16) are respectively parallel to the adjacent first edge (141) and form an inclined inner chute (18) between each other.

8. The method of claim 1, wherein the method further comprises: Along the extension direction of the oil passage (7), the two ends of the plate-shaped body (1) are respectively arranged in an outwardly descending and inclined manner.

9. The method of claim 7, wherein the method further comprises: The surface of the high column (16) located in the oil storage groove (10) is concave to form a recess (19) for reducing friction resistance.

10. The method of claim 1, wherein the method further comprises: The sliding friction surface (8) is provided with a plurality of hole holes (20) for reducing resistance.

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