A positioning device for a slider sealing piece

Abstract

A positioning device for a slider sealing piece, comprising an end cover installed at the end of the slider. An external oil passage is provided on the outer end surface of the end cover, and the outer side of the external oil passage is open on the outer end surface of the end cover. A sealing piece for sealing the outer opening of the external oil passage is installed on the outer end surface of the end cover. The end cover is provided with an installation surface for installing the sealing piece, and a positioning component protruding from the installation surface and assisting the sealing piece in positioning is provided on the installation surface. A positioning hole for cooperating with the positioning component to position is provided on the sealing piece. By setting the positioning device to assist the sealing piece to be installed at a suitable position on the end cover, it can prevent the staff from installing incorrectly and causing abnormalities during the operation of the slider. At the same time, the positioning device also has a certain fixing effect, which can prevent the frictional force generated when the slider slides on the slide rail from taking the sealing piece out of the end cover.

Description

Technical Field

[0001] The present invention relates to the field of sliders, and in particular to a positioning device for a slider sealing piece. Background Art

[0002] At present, a slider is a commonly used component in a mechanical mechanism, which is used to drive a component to move at high speed, smoothly and accurately. When the distance between the upper reverse channel and the outer wall of the end cover is small during the design and use of the slider, an oil passage cannot be opened between the upper reverse channel and the outer wall of the end cover. Even if an oil passage is opened, only a small oil passage can be opened, which affects the lubrication speed of the slider and reduces the service life of the end cover, and correspondingly increases the manufacturing difficulty of the end cover, thereby making it difficult to set the oil passage of the lower reverse channel and affecting the lubrication effect of the rolling elements in the lower reverse channel. To solve the above problems, some existing sliders arrange part of the oil passage on the outer end face of the end cover, so that an oil passage is designed on the outer end face of the end cover to lubricate the lower reverse channel. Since the end cover is integrally formed, the oil passage designed on the outer end face of the end cover can only be set in an open shape, and the open oil passage cannot well preserve the internal lubricating oil, so a sealing piece for preventing the lubricating oil from flowing out of the oil passage needs to be arranged outside the oil passage.

[0003] At present, the sealing piece is directly fixed on the end cover through a pressing plate. Not only is it inconvenient to align during installation, but also the friction generated when the slider slides on the slide rail is likely to bring the sealing piece out of the end cover. Summary of the Invention

[0004] The present invention aims to solve the above problems existing in the prior art, and provides a positioning device for a slider sealing piece, in which a protruding positioning device is provided on the end cover, and a positioning hole cooperating with the positioning device is provided on the sealing piece.

[0005] The technical solution adopted by the present invention to solve its technical problems: A positioning device for a slider sealing piece includes an end cover installed at the end of the slider. An outer oil passage is opened on the outer end face of the end cover, and the outer side of the outer oil passage is open to the outer end face of the end cover. A sealing piece for sealing the outer opening of the outer oil passage is installed on the outer end face of the end cover. The end cover is provided with an installation surface for installing the sealing piece, and a positioning component protruding from the installation surface and assisting in positioning the sealing piece is provided on the installation surface. A positioning hole cooperating with the positioning component for positioning is provided on the sealing piece. The cooperation between the positioning component and the positioning hole can facilitate the user to install and can also assist in installing the sealing piece on the end cover.

[0006] The positioning component includes a positioning post protruding from the outer end face of the end cover, fixing holes located on the left and right sides of the end cover and protruding from the outer end face of the end cover, and an oil injection hole located in the middle of the top of the end cover and protruding from the outer end face of the end cover. The positioning of the sealing piece is assisted by the positioning post, the fixing holes and the oil injection hole, so that the sealing piece can be placed in a relatively accurate position.

[0007] There are 4 positioning posts and 2 fixing holes. The positioning posts and the fixing holes are symmetrically distributed on both sides of the oil injection hole and are located below the oil injection hole. Symmetrically distributing the positioning posts and the fixing holes on both sides of the oil injection hole can provide sufficient fixing force for the sealing piece and the pressing plate, preventing the pressing plate and the sealing piece from being lifted by the frictional force generated during the operation of the slide rail and the slide rail.

[0008] The fixing hole runs through both the inner and outer sides of the end cover. There is a counterbore on the outer side of the fixing hole, and a supporting surface is formed on the outer end face of the counterbore. A fixing member for fixing the end cover is installed in the fixing hole. The outer end of the fixing member is limited in the counterbore, and the inner end of the fixing member passes through the fixing hole. By limiting the fixing member installed in the counterbore, it is ensured that the end cover can be stably installed on the slider.

[0009] There is a pressing plate installed on the end cover outside the sealing piece and pressing the sealing piece toward the outer oil circuit side. The pressing plate is supported on the supporting surface. There is a threaded hole on the outer end face of the fixing member, and a through hole corresponding to the threaded hole is provided on the pressing plate. There is a fixing screw passing through the through hole and threadedly connected in the threaded hole. By the pressing of the pressing plate, the sealing piece and the surface of the outer oil circuit are closely attached, preventing oil from leaking out of the outer oil circuit.

[0010] There are two outer oil circuits on the end cover and they are symmetrically distributed at both ends of the oil injection hole.

[0011] There is a protruding fitting surface around the outer side of the outer oil circuit, and the height of the fitting surface does not exceed the height of the positioning post. Preventing the fitting from being too high so that when installing the pressing plate, there are some protrusions that cannot fix the whole sealing piece.

[0012] There is an installation groove on the outer end face of the end cover, and the sealing piece is embedded and installed in the installation groove. The height of the installation groove is higher than the height of the supporting surface. Through the installation groove, the sealing piece can be stably installed on the end cover, preventing the sealing piece from having a large displacement.

[0013] The height of the positioning post is not higher than the height of the supporting surface. Preventing the positioning post from being too high so that when installing the pressing plate, it can only fit with the positioning post and cannot press the sealing piece tightly, making the sealing piece and the outer oil circuit fit.

[0014] There is a positioning portion protruding upward at the top of the installation groove to assist in positioning the pressing plate, and a cooperating portion for cooperating with the positioning portion is provided on the pressing plate. By providing the positioning portion and the cooperating portion, it is convenient to install the pressing plate.

[0015] The beneficial effects of the present invention are: The present invention assists in installing the sealing piece to a suitable position on the end cover by setting a positioning device, preventing incorrect installation by the staff from causing abnormalities during the operation of the slider. At the same time, the positioning device also has a certain fixing effect, preventing the frictional force generated when the slider slides on the slide rail from bringing the sealing piece out of the end cover. Description of the Drawings

[0016] Figure 1 is a structural schematic diagram of the present invention;

[0017] Figure 2 is an exploded view of the present invention;

[0018] Figure 3 is a front view of the end cover;

[0019] Figure 4 is a rear view of the end cover.

[0020] Explanation of reference numerals: end cover 1, external oil circuit 2, sealing piece 3, mounting surface 4, positioning assembly 5, positioning hole 6, positioning post 7, fixing hole 8, oil injection hole 9, counterbore 10, supporting surface 11, fixing member 12, pressing plate 13, fixing screw 14, fitting surface 15, mounting groove 16, positioning portion 17, mating portion 18, internal oil circuit 19, ball groove 20, lubricating oil passage 21, oil inlet hole 22, oil outlet hole 23. Detailed implementation manners

[0021] The present invention will be further described below in conjunction with the accompanying drawings of the specification and specific embodiments. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. In addition, the embodiments of the present invention involved in the following description are usually only some embodiments of the present invention, rather than all embodiments. Therefore, all other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.

[0022] Refer to the attached Figure 1 , 2: A positioning device for a slider sealing piece, including an end cover 1 installed at the end of the slider. An external oil passage 2 is opened on the outer end face of the end cover 1. The outer side of the external oil passage 2 is open on the outer end face of the end cover 1. A sealing piece 3 for sealing the outer opening of the external oil passage 2 is installed on the outer end face of the end cover 1. The sealing piece 3 is made of a rubber material with good flexibility and sealing performance. There is an installation surface 4 for installing the sealing piece 3 on the end cover 1. A positioning component 5 that protrudes from the installation surface 4 and assists in positioning the sealing piece 3 is provided on the installation surface 4. Among them, the positioning component 5 includes a positioning post 7 protruding from the outer end face of the end cover 1, fixing holes 8 located on the left and right sides of the end cover 1 and protruding from the outer end face of the end cover 1, and an oil injection hole 9 located in the middle of the top of the end cover 1 and protruding from the outer end face of the end cover 1. There are two external oil passages 2 on the end cover 1 and they are symmetrically distributed at both ends of the oil injection hole 9. Specifically, in this embodiment, there are four positioning posts 7, two fixing holes 8, and one oil injection hole 9. The positioning posts 7 and the fixing holes 8 are symmetrically distributed on both sides of the oil injection hole 9 and are located below the oil injection hole 9. At the same time, the position of the fixing holes 8 is closer to the left and right sides. The sealing piece 3 is provided with positioning holes 6 that cooperate with the positioning component 5 for positioning. The inner end face of the end cover is provided with an inner oil passage 19 and a ball groove 20 for placing balls. One side of the ball groove 20 is provided with a lubricating oil passage 21 for injecting lubricating oil into the inside of the ball groove 20. The inner oil passage 19 is connected to the oil injection hole 9. Oil inlet holes 22 connected to the inner oil passage 19 and oil outlet holes 23 connected to the lubricating oil passage 21 are respectively opened at both ends of the external oil passage 2.

[0023] To ensure that the sealing piece 3 can be closely attached to the external oil passage 2, a pressing plate 13 is provided outside the sealing piece 3 and is installed on the end cover 1 to press the sealing piece 3 towards the external oil passage 2. The pressing plate 13 is supported and installed on a support surface 11. The pressing plate 13 is integrally formed and made of a metal with a certain hardness. To enable the fixing piece 12 to be stably installed on the end cover 1, a threaded hole is provided on the outer end face of the fixing piece 12, and through holes corresponding to the threaded hole are provided on the pressing plate. The pressing plate 13 is fixed by fixing screws 14 that pass through the through holes and are threadedly connected to the threaded holes. When the fixing screws 14 are tightened, the pressing plate 13 around the through holes is closely attached to the support surface 11. Since the positioning holes 6 are symmetrically distributed on both sides of the oil injection hole 9 and are located below the oil injection hole 9 and close to the left and right sides of the end cover 1, the fixing screws 14 can apply sufficient pressure to the entire pressing plate 13, and the end cover 1 will not be lifted by the frictional force generated when the slider slides on the slide rail. To improve the sealing effect of the sealing piece 3 on the external oil passage 2, a fitting surface 15 that protrudes outward is provided around the outer side of the external oil passage 2.

[0024] Reference appendix Figure 3: The lower end of the sealing piece 3 contacts the outer side surface of the guide rail to achieve the sealing of the slider. In this embodiment, the sealing piece 3 is positioned and limited by the positioning posts 7 during installation. When sliding, the positioning posts can prevent the sealing piece 3 from being taken out of the end cover 1 by the frictional force generated when contacting the slide rail. There are four positioning posts 7 symmetrically distributed at both ends of the end cover 1, which can give the sealing piece 3 sufficient fixity. The fixing holes 8 are arranged through both sides of the end cover 1. A counterbore 10 is provided outside the fixing holes 8, and a supporting surface 11 is formed on the outer end surface of the counterbore 10. The height of the positioning posts 7 cannot be higher than the supporting surface 11. After the sealing piece 3 is installed on the installation surface 4, the outer surface of the sealing piece 3 is flush with the surface of the supporting surface 11. Since the pressing plate 13 is supported on the supporting surface 11, if the height of the positioning posts 7 is higher than the supporting surface 11, when installing the pressing plate 13, the pressing plate 13 will closely fit the surface of the positioning posts 7. And the outer surface of the sealing piece 3 is flush with the surface of the supporting surface 11, so the pressing plate 13 can only limit the sealing piece 3 above the outer oil passage and cannot closely fit the outer oil passage, which will cause part of the lubricating oil to flow out of the oil passage, thus weakening the lubrication effect. At the same time, the height of the fitting surface 15 cannot be higher than the height of the positioning posts 7. Because the sealing piece 3 covers the fitting surface 15, if the height of the fitting surface 15 is higher than the positioning posts 7, there will be a small protrusion above the fitting surface 15 after installing the sealing piece 3. And the pressing plate 13 makes the sealing piece 3 stably installed on the end cover 1 by closely fitting with the whole sealing piece 3. In this way, only a part of the protrusion will closely fit the pressing plate 13, and the frictional force generated when the slider slides on the slide rail is likely to take the sealing piece 3 away from the end cover 1. A fixing member 12 for fixing the end cover 1 is installed in the fixing holes 8. The fixing member 12 includes a fixing part arranged in the counterbore 10 and a fixing rod arranged in the fixing holes 8 and passing through the fixing holes 8. Threads for connecting with the slider are provided on the surface of the fixing rod. The fixing rod is fixedly installed on the fixing part, and the diameter of the fixing rod is smaller than that of the fixing part, so that the end cover 1 can be fixed on the slider through the fixing member 12.

[0025] To facilitate the positioning and installation of the pressing plate 13, a positioning part 17 that protrudes upward and assists in positioning the pressing plate 13 is provided at the top of the installation groove 16. A cooperating part 18 that cooperates with the positioning part 17 for positioning is provided on the pressing plate 13.

[0026] Certain terms will be used in the description and claims of this invention to refer to particular products. Those of ordinary skill in the art should understand that manufacturers may refer to the same components by different names. This document is not intended to distinguish components that have the same function but different names. In the following description and claims, words such as "comprising", "having", and "including" are open-ended words and should therefore be interpreted as meaning "including but not limited to...".

[0027] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A positioning device for a slider sealing piece, comprising an end cover (1) installed at the end of the slider. An external oil passage (2) is provided on the outer end surface of the end cover (1). The outer side of the external oil passage (2) is open on the outer end surface of the end cover (1). A sealing piece (3) for sealing the outer opening of the external oil passage (2) is installed on the outer end surface of the end cover (1). It is characterized in that: The end cover (1) is provided with an installation surface (4) for installing the sealing piece (3). A positioning component (5) protruding from the installation surface (4) and assisting the sealing piece (3) in positioning is provided on the installation surface (4). A positioning hole (6) for cooperating with the positioning component (5) for positioning is provided on the sealing piece (3). The positioning component (5) includes a positioning post (7) protruding from the outer end surface of the end cover (1) and fixing holes (8) located on the left and right sides of the end cover (1) and protruding from the outer end surface of the end cover (1). The fixing holes (8) penetrate through the inner and outer sides of the end cover (1). A counterbore (10) is provided on the outer side of the fixing holes (8). A fixing member (12) for fixing the end cover (1) is installed in the fixing holes (8). A threaded hole is provided on the outer end surface of the fixing member (12). The outer end of the fixing member (12) is limited in the counterbore (10), and the inner end of the fixing member (12) penetrates through the fixing holes (8).

2. A positioning device for a slider sealing piece according to claim 1, It is characterized in that: The positioning component (5) includes an oil injection hole (9) located in the middle of the top of the end cover (1) and protruding from the outer end surface of the end cover (1).

3. A positioning device for a slider sealing piece (3) according to claim 2, It is characterized in that: There are 4 positioning posts, and 2 fixing holes (8). The positioning posts and the fixing holes (8) are symmetrically distributed on both sides of the oil injection hole (9) and are located below the oil injection hole (9).

4. A positioning device for a slider sealing piece according to claim 2, It is characterized in that: A support surface (11) is formed on the outer end surface of the counterbore (10).

5. A positioning device for a slider sealing piece according to claim 4, It is characterized in that: A pressing plate (13) is installed on the end cover (1) outside the sealing piece (3) and presses the sealing piece (3) towards the side of the external oil passage (2). The pressing plate (13) is supported on the support surface (11). Through holes corresponding to the threaded holes are provided on the pressing plate (13). Fixing screws (14) passing through the through holes and threadedly connected to the threaded holes are provided on the pressing plate (13).

6. A positioning device for a slider sealing piece according to claim 2, It is characterized in that: Two external oil passages (2) are provided on the end cover (1) and are symmetrically distributed at both ends of the oil injection hole (9).

7. A positioning device for a slider sealing piece according to claim 1, It is characterized in that: A fitting surface (15) protruding outwards is provided around the outer side surface of the external oil passage (2). The height of the fitting surface (15) does not exceed the height of the positioning post.

8. A positioning device for a slider sealing piece according to claim 4, It is characterized in that: The outer end face of the end cover (1) is provided with an installation groove (16), and the sealing sheet (3) is embedded and installed in the installation groove (16). The height of the installation groove (16) is higher than the height of the support surface (11).

9. A positioning device for a slider sealing sheet according to claim 4, characterized in that: The height of the positioning post is not higher than the height of the support surface (11).

10. A positioning device for a slider sealing sheet according to claim 5 or 8, characterized in that: The top of the installation groove (16) is provided with a positioning portion (17) that protrudes upward and assists the pressing plate (13) in positioning. The pressing plate (13) is provided with a matching portion (18) that cooperates with the positioning portion (17) for positioning.

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