Oil passage structure of a slider

Abstract

The oil passage structure of the slider comprises an end cover with an oil inlet hole, a retainer mounted in the end face of the end cover and spliced with the end cover to form at least two pairs of reverse channels, and an oil channel connected with the oil inlet hole and the reverse channels, wherein the oil channel comprises an outer oil groove arranged on the outer end face of the end cover and across the upper end reverse channel, a sealing part sealingly connected outside the outer oil groove, and an outer oil channel formed by splicing the outer oil groove and the sealing part, and an oil inlet channel is arranged on the side of the outer oil channel away from the oil inlet hole and penetrates the end cover from outside to inside, a drainage groove is arranged on the inner end face of the end cover and connected with the oil inlet channel and the reverse channels, and the drainage groove is spliced with the retainer to form an oil injection channel.

Description

Technical Field

[0001] This invention relates to the field of slider technology, and more particularly to an oil circuit structure for a slider. Background Technology

[0002] A slider typically consists of an end cap, a slider body, a cage mounted on the slider body, and rolling elements located within the cage for cyclic support. It is generally used in high-speed, frequently starting and reversing motion components. During use, in order to reduce friction between rolling elements or between rolling elements and guide rails, lubricating oil is needed to lubricate the reverse channel of the slider, thereby extending the service life of the slider.

[0003] When designing and using a slider, if the distance between the upper reverse channel and the outer wall of the end cover is small, it is impossible to open an oil passage between the upper reverse channel and the outer wall of the end cover. Even if an oil passage is opened, it can only be a small one. This affects the lubrication speed of the slider and reduces the service life of the end cover. It also increases the manufacturing difficulty of the end cover, which in turn makes it difficult to set up the oil passage in the lower reverse channel and affects the lubrication effect of the rolling elements in the lower reverse channel. Summary of the Invention

[0004] The present invention aims to solve the problems existing in the prior art by providing an oil circuit structure for a slider. The oil circuit structure in this application reduces the manufacturing difficulty of the end cap while ensuring the lubrication effect on the reverse channel and guaranteeing the service life of the end cap.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: The oil circuit structure of this slider includes an end cap with an oil inlet hole, a retainer installed on the inner end face of the end cap and spliced ​​with the end cap to form at least two pairs of reverse channels, and an oil passage connecting the oil inlet hole and the reverse channels. The oil passage includes an outer oil groove opened on the outer end face of the end cap and spanning the upper reverse channel. A sealing part is sealed to the outside of the outer oil groove. The sealing part is spliced ​​with the outer oil groove to form the outer oil passage. An oil inlet channel is opened on the side of the outer oil passage away from the oil inlet hole, which runs from the outside to the inside through the end cap. A drainage groove is provided on the inner end face of the end cap to connect the oil inlet channel and the reverse channel. The drainage groove is spliced ​​with the retainer to form an oil injection channel.

[0006] Preferably, an inner oil groove is formed on the inner end face of the end cap, which is connected to the oil inlet hole. The inner oil groove and the retainer are spliced ​​together to form an inner oil passage. An oil outlet passage is formed on the inner oil passage, which runs from the inside to the outside through the end cap and connects to the outer oil groove.

[0007] Preferably, the outer oil tank is set to gradually decrease from the end connected to the oil outlet to the end connected to the oil inlet.

[0008] Preferably, the outer side of the outer oil groove is provided with a protruding extrusion part, and the sealing part is a flexible sealing layer provided on the outer end face of the end cap. The outer end face of the flexible sealing layer is provided with a pressing part that is installed on the end cap and presses the flexible sealing layer toward the extrusion part.

[0009] Preferably, the end cap has side oil holes on the left and right sides, which are at the same height as the oil inlet channel. The bottom of the side oil holes has a side channel communicating with the oil inlet channel, and a separating sealing sheet is provided in the side channel.

[0010] Preferably, the reverse channel includes a groove formed on the inner end face of the end cap and a track protrusion on the retainer corresponding to the groove.

[0011] Preferably, the flow channel includes a flow collecting channel formed on the inner end face of the end cover and connected to the oil inlet channel, and a flow dividing channel connecting the flow collecting channel and the reverse channel respectively.

[0012] Preferably, the diversion channel is disposed on the outer end face of the vertical reverse channel.

[0013] Preferably, the retainer is provided with a cover groove corresponding to the oil inlet channel and the drain channel.

[0014] The beneficial effects of this invention are: In this invention, part of the oil passage is designed on the outer end face of the end cap, thus bypassing the upper reverse channel design, and then connecting the outer oil passage of the outer end face through the oil outlet and oil inlet channels, so as to realize the connection and lubrication of the oil inlet hole with different reverse channels, thereby greatly reducing the manufacturing difficulty of the end cap, while also ensuring the service life of the end cap and ensuring a good lubrication effect on the reverse channels. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of the end cap structure;

[0018] Figure 4 This is a rear view of the end cap;

[0019] Figure 5 This is the left view of the end cap.

[0020] Explanation of reference numerals in the attached drawings: 1. Oil inlet hole, 2. End cap, 3. Reverse channel, 3-1. Groove, 3-2. Track protrusion, 4. Cage, 5. Outer oil groove, 6. Sealing part, 7. Oil inlet channel, 8. Drainage groove, 8-1. Collection groove, 8-2. Diversion groove, 9. Inner oil groove, 10. Oil outlet channel, 11. Extrusion part, 12. Pressing part, 13. Side oil hole, 14. Side channel, 15. Separating sealing plate, 16. Cover groove. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] A slider typically consists of an end cap, a slider body, a cage mounted on the slider body, and rolling elements located within the cage for cyclic support. Oil passages are generally located on the inner end face of the end cap. Sealing plates are located on the left and right sides of the cage to cover and seal the end cap. These sealing plates are clamped between the end cap and the slider body by screws, thus sealing the inner end face of the end cap and forming a relatively sealed oil passage. Sliders are generally used for high-speed, frequently starting, and reversing motion components. During use, the rolling elements within the slider achieve functions such as movement, support, and positioning. To reduce friction between the rolling elements or between the rolling elements and the guide rail, lubricating oil is needed to lubricate the slider's circulation channels, thereby extending the slider's service life.

[0023] Referring to the accompanying drawings: This embodiment discloses an oil circuit structure for a slider, including an end cap 2 with an oil inlet hole 1, a retainer 4 installed on the inner end face of the end cap 2 and spliced ​​with the end cap 2 to form at least two pairs of reverse channels 3, and an oil passage connecting the oil inlet hole 1 and the reverse channels 3; depending on the slider's usage parameters and load-bearing capacity, the number of circulating raceways of the slider can be increased accordingly, so that the slider has four raceways or six raceways, and the corresponding number of reverse channels 3 needs to be designed on the end cap. Specifically, in this embodiment, the rolling element is a ball, and the corresponding reverse channel 3 is provided with two pairs, upper and lower. The reverse channel 3 includes two pairs of grooves 3-1 opened on the inner end face of the end cap 2 and track protrusions 3-2 provided on the retainer 4 corresponding to the grooves 3-1. One pair of grooves 3-1 is provided on the left and right sides above the inner end face of the end cap 2, and the other pair of grooves 3-1 is provided on the left and right sides below the inner end face of the end cap 2. The track protrusions 3-2 and the grooves 3-1 are spliced ​​together to form a reverse channel 3 connected to the circulating channel in the slider;

[0024] When designing and using the slider, if the distance between the upper reverse channel 3 and the outer wall of the end cover 2 is small, it is impossible to create an oil passage between them. Even if an oil passage is created, it can only be a small one. This affects the lubrication speed of the slider and reduces the service life of the end cover 2, also increasing the manufacturing difficulty of the end cover 2. Consequently, it becomes difficult to set up the oil passage in the lower reverse channel 3, affecting the lubrication effect of the rolling elements within the lower reverse channel 3. Specifically, for example... Figure 3 As shown, in this embodiment, the upper reverse channel 3 is arranged vertically, which makes the upper side of the upper reverse channel 3 close to the outer wall of the end cap 2, thus making it impossible to set an oil passage connecting the oil inlet hole 1 and the lower reverse channel 3 between the upper reverse channel 3 and the outer wall of the end cap 2.

[0025] like Figure 2 , 3 As shown in Figure 4, to solve the above problems, the oil passage in this application includes an outer oil groove 5 connected to the oil inlet 1 and opened on the outer end face of the end cap 2. The outer oil groove 5 is set across the upper reverse channel 3, that is, the outer oil groove 5 can be set across the upper reverse channel 3 on the outer end face of the end cap, thereby directly avoiding the above-mentioned problems of not being able to open an oil passage or having difficulty opening an oil passage on the inner end face of the end cap 2. A sealing part 6 is sealed to the outside of the outer oil groove 5, and the sealing part 6 and the outer oil groove 5 are spliced ​​together to form an outer oil passage. Specifically, in this embodiment, since a pair of reverse channels 3 are set on the left and right sides of the end cap 2, the corresponding outer oil groove 5 is also provided on the left and right sides. The outer oil groove 5 is located on the outer end face of the end cap 2 and is set across the upper reverse channel 3. The sealing part 6 can be a sheet-like structure and a flexible sealing layer, such as a rubber layer, set on the outer end face of the end cap 2. An installation is provided on the outer end face of the flexible sealing layer. The end cap 2 has a pressing part 12 that presses the flexible sealing layer towards the outer oil groove 5. Specifically, the pressing part 12 can be a hard sheet structure corresponding to the sealing part 6. The pressing part 12 is fixed to the outer end face of the end cap 2 by screws. The pressing part 12 is provided with mounting holes. The screws pass through the mounting holes and are fixedly connected to the end cap 2. Under the action of the screws, the pressing part 12 is pressed towards the end cap 2, so that the flexible sealing layer between the pressing part 12 and the end cap 2 is pressed and sealed on the outside of the outer oil groove 5, thereby forming a relatively sealed outer oil passage. Furthermore, in order to increase the sealing effect of the outer oil passage, a pressing part 11 protruding from the outer end face of the end cap 2 is provided around the outer side of the outer oil groove 5, so that the pressing part 12 presses the flexible sealing layer on the protruding pressing part 11, so that the pressing part 11 and the flexible sealing layer are tightly fitted, so that the outer oil passage has good sealing performance.

[0026] Among them, such as Figure 3 As shown, in order to achieve the connection between the outer oil passage and the oil inlet 1, an inner oil groove 9 is opened on the inner end face of the end cover 2 to connect the oil inlet 1. The inner oil groove 9 and the retainer 4 are spliced ​​to form an inner oil passage. In this embodiment, the retainer 4 is sealed and covered on the inner end face of the end cover 2 by the mutual compression of the slider body and the end cover 2, so as to achieve relative sealing of the inner oil passage during use. Furthermore, an oil outlet 10 is opened on the inner oil passage, which runs from the inside to the outside through the end cover 2 and is connected to the outer oil groove 5. This allows the lubricating oil entering the oil inlet 1 to enter the outer oil passage in sequence through the sealed inner oil passage and the oil outlet 10. In this embodiment, the oil outlet 10 is located between the oil inlet 1 and the upper reverse channel 3.

[0027] like Figure 3 and 4As shown, in order to deliver the lubricating oil entering the outer oil passage to the corresponding reverse channel 3, an oil inlet channel 7 is provided on the side of the outer oil passage away from the oil inlet hole 1, extending from the outside to the inside through the end cover 2. In this embodiment, the oil inlet channel 7 is located between the upper and lower reverse channels 3. A guide groove 8 is provided on the inner end face of the end cover 2, connecting the oil inlet channel 7 and the reverse channel 3. The guide groove 8 is spliced ​​with the retainer 4 to form an oil injection channel. Specifically, the retainer 4 is provided with a covering groove 16 corresponding to the oil inlet channel 7 and the guide groove 8, thereby further increasing the cross-sectional area of ​​the oil injection channel, making the oil injection channel more efficient. The interior can hold more lubricating oil so that both the upper and lower reverse channels 3 can receive a certain amount of lubricating oil for lubrication. In use, the lubricating oil flowing out from the oil outlet 10 enters the oil inlet 7 through the outer oil passage, and then flows into the corresponding reverse channel 3 through the oil inlet 7 and the drainage groove 8. Since the reverse channel 3 is set on the inner end face of the end cover 2, and in this embodiment, the oil passage is directly bypassed from the upper reverse channel 3 by the design of the oil outlet 10, the outer oil passage and the oil inlet 7, thereby directly avoiding the problem that the original oil passage could not be designed to connect the lower reverse channel 3 on the inner end face of the end cover 2.

[0028] like Figure 3 As shown, in this embodiment, since there are two pairs of reverse channels 3, it is necessary to lubricate the two pairs of reverse channels 3 with oil. Specifically, the flow channel 8 includes a collection channel 8-1 connected to the oil inlet channel 7 on the inner end face of the end cover 2, and a diversion channel 8-2 that connects the collection channel 8-1 and the two pairs of reverse channels 3 respectively. The lubricating oil flowing out of the oil inlet channel 7 first flows into the collection channel 8-1, and then flows to the corresponding reverse channel 3 through different diversion channels 8-2.

[0029] Furthermore, in this embodiment, when the slider is in use, the reverse channel 3 serves to guide the balls in the reverse direction. After the balls are reversed through the reverse channel 3, they re-enter the circulation channel of the slider for circulation. Because the balls are subjected to centrifugal force when they are reversed in the reverse channel 3, the balls come into contact with the bottom of the outer oil groove 5. In order to avoid the diversion groove 8-2 affecting the normal rolling of the balls, in this embodiment, the diversion groove 8-2 is set on the outer end face of the vertical reverse channel 3, thereby avoiding the contact between the balls and the diversion groove 8-2 when they are rolling and circulating, while ensuring that the lubricating oil can smoothly enter the reverse channel 3.

[0030] Furthermore, in order to relatively accelerate the flow rate of lubricating oil in the outer oil passage, in this embodiment, the outer oil groove 5 is designed with an inclined structure during installation and use. Specifically, the outer oil groove 5 is gradually lowered from the end connected to the oil outlet 10 to the end connected to the oil inlet 7, thereby increasing the flow rate of lubricating oil in the outer oil passage.

[0031] Furthermore, in order to make the slider adaptable to different operating conditions, in this embodiment, side oil holes 13 are provided on the left and right sides of the end cap 2 at the same height as the oil inlet channel 7. The bottom of the side oil hole 13 is provided with a side channel 14 that communicates with the oil inlet channel 7. A separating sealing sheet 15 is provided in the side channel 14. The separating sealing sheet 15 can be made of plastic. When the oil inlet 1 cannot be used to install an oil nozzle for oiling, the separating sealing sheet 15 can be pierced by a sharp object to connect the side oil hole 13 with the oil inlet channel 7, and an oil nozzle can be installed on the oil hole 13 for use.

[0032] Certain terms are used in the specification and claims of this invention to refer to specific products. Those skilled in the art will understand that manufacturers may use different names to refer to the same components. This document is not intended to distinguish between components that have the same function but different names. In the following specification and claims, words such as “comprising,” “having,” and “including” are open-ended terms and should therefore be interpreted as “containing but not limited to…”.

[0033] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An oil passage structure for a slider, comprising an end cap (2) with an oil inlet (1), a retainer (4) mounted on the inner end face of the end cap (2) and spliced ​​with the end cap (2) to form at least two pairs of reverse channels (3), and an oil passage connecting the oil inlet (1) and the reverse channels (3), characterized in that: The oil passage includes an outer oil groove (5) formed on the outer end face of the end cap (2) and spanning the upper reverse channel (3). A sealing part (6) is sealed to the outside of the outer oil groove (5). The sealing part (6) and the outer oil groove (5) are spliced ​​together to form the outer oil passage. An oil inlet channel (7) is formed on the side of the outer oil passage away from the oil inlet hole (1) and extends from the outside to the inside through the end cap (2). A drainage groove (8) is provided on the inner end face of the end cap (2) to connect the oil inlet channel (7) and the reverse channel (3). The drainage groove (8) is spliced ​​with the retainer (4) to form an oil injection channel. An inner oil groove (9) with an oil inlet hole (1) is provided. The inner oil groove (9) and the retainer (4) are spliced ​​together to form an inner oil passage. An oil outlet passage (10) is provided on the inner oil passage, which runs from the inside to the outside through the end cap (2) and is connected to the outer oil groove (5). The outer oil groove (5) is gradually lowered from one end connected to the oil outlet passage (10) to the end connected to the oil inlet passage (7). The diversion groove (8) includes a collection groove (8-1) opened on the inner end face of the end cap (2) and connected to the oil inlet passage (7), and a diversion groove (8-2) connecting the collection groove (8-1) and the reverse channel (3) respectively.

2. The oil circuit structure of the slider according to claim 1, characterized in that: The outer oil groove (5) is provided with a protruding extrusion part (11) on the outside. The sealing part (6) is a flexible sealing layer provided on the outer end face of the end cap (2). The outer end face of the flexible sealing layer is provided with a pressing part (12) that is installed on the end cap (2) and presses the flexible sealing layer toward the extrusion part (11).

3. The oil circuit structure of the slider according to claim 1, characterized in that: The end cap (2) has side oil holes (13) on the left and right sides, which are at the same height as the oil inlet channel (7). The bottom of the side oil hole (13) is provided with a side channel (14) that communicates with the oil inlet channel (7). The side channel (14) is provided with a separating sealing sheet (15).

4. The oil circuit structure of the slider according to claim 1, characterized in that: The reverse channel (3) includes a groove (3-1) formed on the inner end face of the end cap (2) and a track protrusion (3-2) provided on the retainer (4) corresponding to the groove (3-1).

5. The oil circuit structure of the slider according to claim 1, characterized in that: The diversion channel (8-2) is set on the outer end face of the vertical reverse channel (3).

6. The oil circuit structure of the slider according to claim 1, characterized in that: The retainer (4) is provided with a cover groove (16) corresponding to the oil inlet (7) and the diversion groove (8).

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