End cover and linear sliding rail with end cover

Abstract

The utility model provides a linear sliding rail with end covers. The linear sliding rail comprises a sliding rail, a sliding block which can be arranged on the sliding rail in a sliding manner, and two groups of end covers which are arranged at two opposite ends of the sliding block, the end cover comprises a cover body and a first cover plate arranged on the cover body, the cover body is provided with a sealing groove section, an oil containing groove and an oil drainage groove which are communicated in sequence, and the first cover plate is provided with a sealing strip section arranged in the sealing groove section. In this way, lubricating grease can be guided into the oil containing groove through the oil discharge groove of the sealing strip section and then flows through the oil drainage groove to be discharged to a preset position, and therefore the oil injection pressure in the end cover is effectively reduced, and the situation that the lubricating grease leaks freely due to the too high oil injection pressure is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to linear slide rail, especially an end cover and linear slide rail with the end cover. BACKGROUND

[0002] The conventional linear slide rail is composed of a guide rail and a sliding block, and an end cover is arranged before and after the sliding block and cooperates with the guide rail to form a ball circulation channel. In addition to guiding the return flow of the balls and preventing foreign matter from entering, the end cover is also responsible for sealing the lubricating grease to maintain the performance and service life of the linear slide rail.

[0003] Referring to Japanese patents JPU11989025526, JPA2013019465 and Chinese patent TW201137258, all of which are designed to seal the lubricating grease of the end cover, the main purpose is to increase the sealing effect by concave-convex design. However, none of these technical solutions has a pressure relief structure design, so there is a risk of oil leakage due to the lack of a place to release the excess lubricating oil, which ultimately affects the normal operation and service life of the linear slide rail. SUMMARY

[0004] The utility model aims to provide an end cover and linear slide rail with the end cover, mainly to solve one or more of the above problems.

[0005] To achieve the above-mentioned purpose, the utility model is an end cover, which comprises a cover body having a first outer end face, a first inner end face opposite to the first outer end face, a first accommodating groove recessed from the first inner end face, two oil containing grooves, two oil discharge grooves respectively connected to the two oil containing grooves, and a sealing groove segment recessed from the bottom surface of the first accommodating groove, both ends of the sealing groove segment being connected to the two oil containing grooves; and a first cover plate arranged on the cover body and having a second outer end face facing the first inner end face, and a sealing strip segment protruding from the second outer end face and arranged in the sealing groove segment, the sealing strip segment having an oil discharge groove, both ends of the oil discharge groove being connected to the two oil containing grooves.

[0006] The utility model has the effect that: by arranging the sealing groove segment, the oil containing groove and the oil discharge groove in sequence on the cover body, and cooperating with the sealing strip segment arranged in the sealing groove segment of the first cover plate, when the oil injection pressure in the end cover is too high, the lubricating oil can be guided into the oil containing groove through the oil discharge groove of the sealing strip segment, and then discharged to the predetermined position through the oil discharge groove. Accordingly, the utility model effectively reduces the oil injection pressure inside the end cover, avoids the lubricating oil from leaking due to the excessive oil injection pressure, and enhances the deformation resistance and assembly displacement resistance of the structure under the oil injection pressure, thereby achieving excellent oil sealing effect.

[0007] Preferably, the cover body further has two return flow grooves recessed from the first inner end face and respectively connected to the two oil discharge grooves.

[0008] Preferably, the cover further has two first oil leakage guide grooves respectively recessed in the bottom surface of the oil leakage groove, and the first oil leakage guide grooves are communicated to the return groove.

[0009] Preferably, each of the oil leakage grooves of the cover has an oil leakage end, and the cover further has two second oil leakage guide grooves respectively recessed in the bottom surface of the oil leakage groove, and the second oil leakage guide grooves are communicated to the oil leakage end.

[0010] Preferably, the sealing groove section of the cover is in the shape of an M, the sealing strip section of the first cover plate is in the shape of an M, and the sealing strip section further has at least two convex strip portions, and the oil discharge groove is formed between two adjacent convex strip portions.

[0011] Preferably, the first cover plate further has a second inner end surface opposite to the second outer end surface, the second inner end surface has a compressed section corresponding to the sealing strip section, the end cover further has a second cover plate arranged on the first cover plate and having a pressing strip section pressing against the compressed section.

[0012] Preferably, the compressed section of the first cover plate is in the shape of an M, and the pressing strip section of the second cover plate is in the shape of an M.

[0013] Preferably, the cover further has two oil guide channels respectively communicated to the two oil containing grooves and the two oil leakage grooves.

[0014] In addition, the utility model also provides a linear slide rail with an end cover, which comprises a slide rail, a sliding block capable of slidingly arranged on the slide rail, and two end covers arranged at two opposite ends of the sliding block, and the composition and structure of each end cover are the same as the description of the end cover, so no further description is given. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other aspects and advantages of the utility model will be found after studying the detailed description in combination with the following drawings:

[0016] Figure 1 is the exploded view of the first embodiment of the utility model;

[0017] Figure 2 is the assembled view of the first embodiment of the utility model;

[0018] Figure 3 is the exploded view of the first embodiment of the utility model, showing the state of separation of the cover and the first cover plate;

[0019] Figure 4 is the exploded view of the first embodiment of the utility model, showing the state of separation of the first cover plate and the second cover plate;

[0020] Figure 5Is the three-dimensional combination drawing of the first embodiment of the utility model, display the end cover three-dimensional state;

[0021] Figure 6 Is Figure 5 The section view of line segment 6-6;

[0022] Figure 7 Is Figure 6 The partial enlarged view of reference numeral 7;

[0023] Figure 8 Is Figure 6 The partial enlarged view of reference numeral 8;

[0024] Figure 9A Is the plan view of the first embodiment of the utility model, display the planar state of the first cover plate;

[0025] Figure 9B Is Figure 9A The section view of line segment 9B-9B;

[0026] Figure 9C Is Figure 9A The section view of line segment 9C-9C;

[0027] Figure 9D Is the partial enlarged section view of the first embodiment of the utility model, display another cross-sectional state of the convex strip part of the first cover plate;

[0028] Figure 10 Is the actuation schematic view of the first embodiment of the utility model, display the pressure relief path of lubricating grease;

[0029] Figure 11 Is the section view of the second embodiment of the utility model, display the state that the cover body is provided with the first oil discharge guide groove; and

[0030] Figure 12 Is the section view of the third embodiment of the utility model, display the state that the cover body is provided with the second oil discharge guide groove.

[0031] 100… sliding rail

[0032] 101… side

[0033] 200… sliding block

[0034] 300… end cover

[0035] 10… cover body

[0036] 11… first outer end face

[0037] 12… first inner end face

[0038] 13… first accommodating groove

[0039] 14… oil containing groove

[0040] 15 oil guiding channel

[0041] 16 oil discharging channel

[0042] 161 oil discharging end

[0043] 17 backflow channel

[0044] 18 sealing groove section

[0045] 181 end

[0046] 19A first oil discharging guide groove

[0047] 19B second oil discharging guide groove

[0048] 20 first cover plate

[0049] 21 second outer end surface

[0050] 22 second inner end surface

[0051] 221 pressure receiving section

[0052] 23 sealing strip section

[0053] 231 convex strip portion

[0054] 232 oil discharging groove

[0055] 2321 end

[0056] 24 sealing convex portion

[0057] 30 second cover plate

[0058] 31 pressure receiving strip section

[0059] 32 sealing concave portion DETAILED DESCRIPTION

[0060] Before proceeding with the detailed description, it is noted that in the following description, like parts, elements, or names are denoted by like reference numerals.

[0061] Referring to Figure 1 and Figure 2 , the utility model discloses a linear slide rail with end cover, which mainly comprises a slide rail 100, a sliding block 200 and two end covers 300. The sliding block 200 is slidably arranged on the slide rail 100. The two end covers 300 are arranged on the two opposite ends of the sliding block 200 by fixing elements (such as screws, not shown in the figure). Since the two end covers 300 are the same in structure, only one end cover 300 will be described below.

[0062] Referring to Figures 3 to 9AAs shown, the end cover 300 is composed of a cover body 10, a first cover plate 20, and a second cover plate 30, wherein:

[0063] The cover body 10 has a first outer end face 11, a first inner end face 12 opposite to the first outer end face 11, a first accommodating groove 13 recessed from the first inner end face 12, two oil accommodating grooves 14, two oil guiding channels 15 respectively communicated with the two oil accommodating grooves 14, two oil discharging grooves 16 respectively communicated with the two oil guiding channels 15, and two backflow grooves 17 respectively communicated with the two oil discharging grooves 16, and a sealing groove section 18 in the shape of the Chinese character "Mi" and recessed from the groove bottom face of the first accommodating groove 13; wherein the two ends 181 of the sealing groove section 18 are respectively connected with the two oil accommodating grooves 14; each of the oil discharging grooves 16 has an oil discharging end 161 adjacent to the side face 101 of the slide rail 100.

[0064] The first cover plate 20 is arranged on the cover body 10 and has a second outer end face 21 facing the first inner end face 12, a second inner end face 22 opposite to the second outer end face 21, a sealing strip section 23 protruding from the second outer end face 21 and arranged on the sealing groove section 18, and a sealing protruding part 24 protruding from the second inner end face 22; wherein the sealing strip section 23 is in the shape of the Chinese character "Mi" and has two protruding strip parts 231 protruding from the groove bottom face of the sealing groove section 18 and an oil discharging groove 232 formed between the two protruding strip parts 231, the two ends 2321 of the oil discharging groove 232 are respectively communicated with the two oil accommodating grooves 14 of the cover body 10, the number of the protruding strip parts 231 is not limited to two, and can be more than three, and the number of the oil discharging groove 232 is one less than the number of the protruding strip parts 231; refer to Figures 9A to 9C As shown, the cross section of the two protruding strip parts 231 of the sealing strip section 23 is approximately semicircular, but is not limited thereto; refer to Figure 9D As shown, the cross section of the protruding strip part 231 can also be approximately rectangular; the second inner end face 22 has a pressure receiving section 221 in the shape of the Chinese character "Mi" corresponding to the sealing strip section 23, and the pressure receiving section 221 is located on the partial circumferential side of the sealing protruding part 24.

[0065] It is worth mentioning that when the first cover plate 20 is arranged on the cover body 10, the sealing groove section 18 of the cover body 10 will close the groove openings of the oil discharging groove 232 of the first cover plate 20, so that the oil discharging groove 232 forms a closed flow channel with both ends communicated. Similarly, when the first cover plate 20 is arranged on the cover body 10, the first cover plate 20 will close the groove openings of the oil accommodating grooves 14, the oil guiding channels 15, and the oil discharging grooves 16 of the cover body 10, and make the oil accommodating grooves 14, the oil guiding channels 15, and the oil discharging grooves 16 in a communicated state.

[0066] The second cover plate 30 is arranged on the first cover plate 20 and has a pressing strip segment 31 and a sealing recess 32 surrounded by the pressing strip segment 31; the pressing strip segment 31 is in the shape of M and is pressed against the pressed segment 221 of the first cover plate 20, so that the combination between the sealing strip segment 23 of the first cover plate 20 and the sealing groove segment 18 of the cover body 10 is more stable and the sealing performance is better; the sealing recess 32 is arranged on the sealing convex segment 24 of the first cover plate 20, so that the combination between the second cover plate 30 and the first cover plate 20 is more stable and the sealing performance is better.

[0067] The above is the structure and configuration of each main component of the first embodiment of the utility model. The operation mode and the effect of the utility model are described as follows.

[0068] As shown in Figure 9A , Figure 9B , Figure 9C and Figure 10 , through the structure that the sealing groove segment 18, the oil containing groove 14, the oil guiding groove 15 and the oil discharge groove 16 are sequentially communicated on the cover body 10, and the sealing strip segment 23 of the first cover plate 20 is arranged in the sealing groove segment 18, when the oil injection pressure in the end cover 300 is too high, the lubricating grease (as shown by the arrows of Figure 9A and Figure 10 ) can be guided into the oil containing groove 14 through the oil discharge groove 232 of the sealing strip segment 23, and then sequentially flows through the oil guiding groove 15 and the oil discharge groove 16 to be discharged to the oil discharge end 161 of the cover body 10 and the return groove 17, so as to lubricate the side surface 101 of the slide rail 100 and the rolling body (not shown in the drawing), accordingly, through the design that the sealing strip segment 23 of the first cover plate 20 has the oil discharge groove 232, part of the lubricating grease can be guided and discharged to release the lubricating grease injection pressure, therefore, the design of the utility model effectively reduces the oil injection pressure in the end cover 300, avoids that the lubricating grease is randomly discharged due to the too high oil injection pressure, and can also enhance the deformation and assembly displacement resistance of the structure under the oil injection pressure, and realizes excellent oil sealing effect.

[0069] As shown in Figure 11 , the second embodiment of the utility model provides a linear slide rail with an end cover, which is different from the first embodiment in that:

[0070] The cover body 10 also has two first oil discharge guide grooves 19A respectively arranged on the groove bottom surfaces of the oil discharge grooves 16, and the first oil discharge guide grooves 19A are communicated to the return groove 17, so that the flow of the lubricating grease is more directional and can better ensure the lubrication of the rolling body (not shown in the drawing) rolling in the return groove 17.

[0071] As shown in Figure 12As shown, the third embodiment of the utility model provides a linear slide rail with an end cover, which is different from the first embodiment in that

[0072] The cover 10 also has a second oil leakage guide groove 19B recessed in the bottom surface of the oil leakage groove 16, and the second oil leakage guide groove 19B is communicated to the oil leakage end 161. The flow of the lubricating grease is more directional and can better ensure the lubrication of the side surface 101 of the slide rail 100.

[0073] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model. For those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An end cap, characterized in that: Include: A cover body having a first outer end face, a first inner end face opposite to the first outer end face, a first receiving groove recessed from the first inner end face, two oil receiving grooves and two drain grooves respectively connected to the two oil receiving grooves, and a sealing groove segment recessed from the bottom surface of the first receiving groove, the two ends of the sealing groove segment being respectively connected to the two oil receiving grooves; and A first cover plate is assembled on the cover body and has a second outer end face facing the first inner end face, and a sealing strip segment protruding from the second outer end face and disposed in the sealing groove segment. The sealing strip segment has an oil drain groove, and the two ends of the oil drain groove are respectively connected to the two oil receiving grooves.

2. The end cap as described in claim 1, characterized in that: The cover also has two return channels recessed on the first inner end face and respectively connected to the two oil drain channels.

3. The end cap as described in claim 2, characterized in that: The cover also has two first oil drain channels recessed into the bottom surface of the oil drain trough, and the first oil drain channels are connected to the return trough.

4. The end cap as described in claim 1, characterized in that: Each of the oil drain grooves of the cover has an oil drain end, and the cover also has two second oil drain guide grooves respectively recessed on the bottom surface of the oil drain groove, and the second oil drain guide grooves are connected to the oil drain end.

5. The end cap as described in claim 1, characterized in that: The sealing groove of the cover is U-shaped, the sealing strip of the first cover is U-shaped, and the sealing strip also has at least two protruding parts. The oil drain groove is formed between two adjacent protruding parts.

6. The end cap as described in claim 1, characterized in that: The first cover plate also has a second inner end face opposite to the second outer end face, the second inner end face having a pressure-bearing section corresponding to the sealing strip section, the end cover also has a second cover plate disposed on the first cover plate, and having a pressing strip section pressing against the pressure-bearing section.

7. The end cap as described in claim 6, characterized in that: The pressure-bearing section of the first cover plate is U-shaped, and the pressure-bearing strip section of the second cover plate is U-shaped.

8. The end cap as described in claim 1, characterized in that: The cover also has two oil guide channels that are respectively connected to the two oil-containing tanks and the two oil-draining tanks.

9. A linear slide rail with end caps, characterized in that: Include: One slide rail; A slider, slidably disposed on the slide rail; and The end cap as described in claim 1 is characterized in that it is disposed at two opposite ends of the slider.

10. The linear slide rail with end cap as described in claim 9, wherein the cap further comprises two return grooves recessed in the first inner end face and respectively connected to the two oil drain grooves, and two first oil drain guide grooves respectively recessed in the bottom surface of the oil drain grooves, and the first oil drain guide grooves are connected to the return grooves.

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