Dustproof gland for track hole

Abstract

The utility model relates to the technical field of linear guide rails, in particular to a dustproof gland for a track hole, which comprises a gland body, a side edge part and a cap edge part, the side edge part is sleeved on the peripheral surface of the gland body, the cap edge part is sleeved on the peripheral surface of the side edge part, and the cap edge part is mounted at the edge of the upper surface of the side edge part. The cap edge portion abuts against the chamfer portion of the counter bore, on one hand, the gland body can be prevented from sinking, and on the other hand, tiny burrs caused by scraping can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of linear guide rails, in particular to a dust-proof gland for a track hole. Background Technique

[0002] A counterbore is provided on a linear guide rail track, and the track is locked to a base through bolts. There is a gap between the counterbore and the bolt part. During use, dust and metal residues are likely to accumulate here (i.e., at the counterbore). Over time, the accumulated metal residues are not only difficult to clean but also block or even damage the operating system of the guide rail. For this reason, we need to provide a dust-proof gland for a track hole.

[0003] Currently, the upper surface of the gland is designed as a flat surface, and a quadrilateral protrusion or a circular ring protrusion is provided around it to ensure that the gland can be clamped in the counterbore. However, in actual operation, due to the uneven force on the upper surface of the gland, it is easy to be knocked off to one side and the time for removing small burrs is relatively long. In addition, during the process of knocking in the gland, a sealed space is formed between the gland and the counterbore. The gas in this sealed space is compressed, causing the protrusion on the upper surface of the gland. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: to solve the technical problem that burrs are easily generated after the existing gland is installed. The utility model provides a dust-proof gland for a track hole. Through the improvement of the gland structure, burr generation can be inhibited during use.

[0005] The technical solution adopted by the utility model to solve its technical problem is: a dust-proof gland for a track hole, including: a gland body, a side part, and a cap part. The side part is sleeved on the outer peripheral surface of the gland body, the cap part is sleeved on the outer peripheral surface of the side part, and the cap part is installed at the edge of the upper surface of the side part.

[0006] Thus, during use, the cap part abuts against the chamfered part of the counterbore. On the one hand, it can prevent the gland body from sinking, and on the other hand, it can avoid the generation of fine burrs due to scraping.

[0007] Further, the outer diameter of the side part is smaller than the inner diameter of the counterbore. Thus, the side part is used for the installation positioning of the gland, facilitating the subsequent application of an external force to knock in the gland.

[0008] Further, it further includes: a ventilation hole, which is opened at the middle position of the gland body, and the diameter of the ventilation hole is d; where: 0.05 mm ≤ d ≤ 0.2 mm. Thus, through the ventilation hole, the space formed between the gland and the counterbore is connected to the outside, ensuring that the air in this space will not be compressed, and the upper surface of the gland body always remains flat.

[0009] Further, it further includes: a convex portion, the convex portion is sleeved on the outer peripheral surface of the side portion, the cap edge portion is sleeved on the outer peripheral surface of the convex portion, and the cap edge portion is located at the edge of the upper surface of the convex portion; wherein: the outer diameter of the convex portion is greater than the inner diameter of the counterbore. Thus, during installation, an external force is applied to make the convex portion and the counterbore in interference fit, which can fix the gland and prevent the gland from detaching from the counterbore due to external factors such as vibration.

[0010] Further, it further includes: a support ring and a plurality of support blocks. The support ring and the support blocks are both located inside the gland body. The support blocks are located outside the support ring, and the plurality of support blocks are distributed in an equally spaced annular shape. Thus, the structural strength of the gland body can be improved, and the gland body is not easily dented or tilted due to the downward pressure of an external force.

[0011] Further, the height of the outer peripheral surface of the convex portion is H1, and the heights of the outer peripheral surfaces of the support ring and the support blocks are both H2; wherein: H1 < H2. Thus, the support strength between the side portion and the convex portion can be improved. If H1 > H2, the convex portion will be subjected to extrusion force, the structural strength of the side portion will be insufficient, and it is prone to deformation, and the upper surface of the gland body will bulge and deform due to the transmission of plastic deformation.

[0012] Further, guiding portions are provided on the lower surfaces of both the side portion and the convex portion, and the guiding portions are arranged in a state of inclining downward. Thus, it can facilitate the installation of the gland.

[0013] Further, the gland body, the side portion, the cap edge portion, the convex portion, the support ring, and the support blocks are all made of hard plastic.

[0014] Further, the gland body, the side portion, the cap edge portion, the support ring, and the support blocks are all made of hard plastic, and the convex portion is made of rubber plastic. Thus, due to the elasticity of the convex portion made of rubber material, when it is extruded, the rubber material will only be extruded and deformed, and will not transmit the extrusion force to the upper surface of the gland body. In this way, the upper surface of the gland body bulges and deforms.

[0015] Further, it further includes: a plurality of side portions. The plurality of side portions are sequentially sleeved on the outer peripheral surface of the gland body. Guiding portions are provided on the lower surfaces of the plurality of side portions. The cap edge portion is sleeved on the outer peripheral surface of the outermost side portion, and the cap edge portion is located at the edge of the upper surface of the outermost side portion. Thus, the plurality of side portions can increase the thickness of the gland body, and further improve the structural strength of the gland body, so that the gland body is not easily dented or tilted due to the downward pressure of an external force; the guiding portions can facilitate the installation of the gland.

[0016] Further, the gland body, the side part and the cap edge part are all made of rigid plastic.

[0017] Further, the gland body, the inner side part and the cap edge part are all made of rigid plastic, and the outermost side part is made of rubber material. Thus, due to the elasticity of the convex part of the rubber material, when being extruded, the rubber material will only be extruded and deformed, rather than transmitting the extrusion force to the upper surface of the gland body. In this way, the upper surface of the gland body will not bulge and deform.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] 1. When the present utility model is in use, the cap edge part abuts against the chamfered part of the counterbore. On the one hand, it can prevent the gland body from sinking, and on the other hand, it can avoid the generation of fine burrs due to scraping.

[0020] 2. Through the air vent holes of the present utility model, the space formed between the gland and the counterbore is communicated with the outside world, ensuring that the air in this space will not be compressed, and the upper surface of the gland body always remains flat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present utility model will be further described below with reference to the drawings and embodiments.

[0022] Figure 1 is a schematic structural diagram of the track hole dust-proof gland for Embodiment 1;

[0023] Figure 2 is a schematic cross-sectional structural diagram of the track hole dust-proof gland for Embodiment 1;

[0024] Figure 3 is for Embodiment 1 Figure 2 partial enlarged structural diagram at A;

[0025] Figure 4 is an installation effect diagram of the track hole dust-proof gland of the present utility model;

[0026] Figure 5 is a schematic cross-sectional structural diagram of the track hole dust-proof gland for Embodiment 3.

[0027] In the figure: 1. gland body; 2. side part; 3. cap edge part; 4. air vent hole; 5. convex part; 6. support ring; 7. support block; 8. guiding part; 100. gland. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The present utility model will now be further described in detail with reference to the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] Embodiment 1:

[0032] As Figures 1 to 4 shown, it is the optimal embodiment of the present utility model. The dust-proof gland 100 of the track hole in this embodiment includes: a gland body 1, a side part 2, and a cap edge part 3. The side part 2 is sleeved on the outer peripheral surface of the gland body 1, and the cap edge part 3 is sleeved on the outer peripheral surface of the side part 2, and the cap edge part 3 is installed at the edge of the upper surface of the side part 2. Thus, during use, the cap edge part 3 abuts against the chamfered part of the counterbore. On the one hand, it can prevent the gland body 1 from sinking, and on the other hand, it can avoid the generation of fine burrs due to scraping.

[0033] In this embodiment, the outer diameter of the side part 2 is smaller than the inner diameter of the counterbore. Thus, the side part 2 is used for the installation and positioning of the gland, which is convenient for applying an external force to knock the gland in subsequently.

[0034] In this embodiment, it further includes: a vent hole 4. The vent hole 4 is opened at the middle position of the gland body 1, and the diameter of the vent hole 4 is d; where: 0.05 mm ≤ d ≤ 0.2 mm. Thus, through the vent hole 4, the space formed between the gland and the counterbore is connected to the outside, ensuring that the air in this space will not be compressed, and the upper surface of the gland body 1 always remains flat.

[0035] Specifically, the gland is to prevent large particulate foreign matters (such as iron filings, etc.) from entering the enclosed space of the counterbore and accumulating around the bolt. Over time, the bolt will rust, making it difficult to disassemble the bolt. The vent hole 4 is for the space formed between the gland and the counterbore to communicate with the outside. Moreover, the diameter of the vent hole 4 is relatively small (0.05 mm ≤ d ≤ 0.2 mm). Therefore, the two do not conflict.

[0036] Specifically, considering the mold, gas flow rate and past experience comprehensively, and at the same time, through actual verification, for this reason, the lower limit of the diameter d of the vent hole 4 is set to 0.05 mm; the diameter of small particulate dust ≤ 0.2 mm. For this reason, the upper limit of the diameter d of the vent hole 4 is set to 0.2 mm.

[0037] In this embodiment, it further includes: a convex portion 5. The convex portion 5 is sleeved on the outer peripheral surface of the side portion 2, and the cap edge portion 3 is sleeved on the outer peripheral surface of the convex portion 5, and the cap edge portion 3 is located at the edge of the upper surface of the convex portion 5; wherein: the outer diameter of the convex portion 5 is greater than the inner diameter of the counterbore. Thus, during installation, an external force is applied to make the convex portion 5 in interference fit with the counterbore, which can fix the gland and prevent the gland from detaching from the counterbore due to external factors such as vibration.

[0038] In this embodiment, it further includes: a support ring 6 and a plurality of support blocks 7. The support ring 6 and the support blocks 7 are both located inside the gland body 1, and the support blocks 7 are located outside the support ring 6. The plurality of support blocks 7 are distributed in an equally spaced circular pattern. Thus, the structural strength of the gland body 1 can be improved, and the gland body 1 is not easily dented or tilted due to the downward pressure of an external force.

[0039] In this embodiment, the height of the outer peripheral surface of the convex portion 5 is H1, and the heights of the outer peripheral surfaces of the support ring 6 and the support blocks 7 are both H2; wherein: H1 < H2. Thus, the support strength between the side portion 2 and the convex portion 5 can be improved. If H1 > H2, the convex portion 5 will be subjected to extrusion force, the structural strength of the side portion 2 will be insufficient, and it is prone to deformation, and the upper surface of the gland body 1 will bulge and deform due to the transmission of plastic deformation.

[0040] In other words, if H1 > H2, when the installation force is applied, the interference fit part of the convex portion 5 will be extruded, the internal support ring 6 and support blocks 7 will play a very small role, and the thickness of the upper surface of the gland body 1 is relatively thin, and the plastic deformation generated by the extrusion will be transmitted to the upper surface of the gland body 1, causing bulging.

[0041] In this embodiment, guiding portions 8 are provided on the lower surfaces of the side portion 2 and the convex portion 5, and the guiding portions 8 are arranged in an inclined downward state. Thus, it is convenient for the installation of the gland.

[0042] In this embodiment, the gland body 1, the side part 2, the cap edge part 3, the convex part 5, the support ring 6 and the support block 7 are all made of hard plastic. For example: the hard plastic is POM (Polyoxymethylene).

[0043] The installation process of the gland 100 of the present utility model is as follows: as Figure 4 shown, first, place the gland to be installed directly above the counterbore; finally, apply a downward pressure to the gland to install the gland onto the counterbore.

[0044] Embodiment 2:

[0045] The difference from Embodiment 1 is that the gland body 1, the side part 2, the cap edge part 3, the support ring 6 and the support block 7 are all made of hard plastic, and the convex part 5 is made of rubber plastic. Thus, due to the elasticity of the convex part 5 made of rubber material, when being squeezed, the rubber material will only be squeezed and deformed, and will not transfer the squeezing force to the upper surface of the gland body 1, so that the upper surface of the gland body 1 bulges and deforms.

[0046] For example: the rubber material is NBR (Nitrile Butadiene Rubber) or PU (Polyurethane Rubber).

[0047] Embodiment 3:

[0048] As Figure 5 shown, the difference from Embodiment 1 is that it further includes: a plurality of side parts 2, the plurality of side parts 2 are sequentially sleeved on the outer peripheral surface of the gland body 1, the lower surfaces of the plurality of side parts 2 are all provided with guiding parts 8, the cap edge part 3 is sleeved on the outer peripheral surface of the outermost side part 2, and the cap edge part 3 is located at the edge of the upper surface of the outermost side part 2; the gland body 1, the side part 2 and the cap edge part 3 are all made of hard plastic. Thus, the plurality of side parts 2 can enhance the thickness of the gland body 1, and further improve the structural strength of the gland body 1, so that the gland body 1 is not easily sunken or tilted due to the downward pressure of an external force; the guiding parts 8 can facilitate the installation of the gland.

[0049] Specifically, there are three side parts 2 in total. The three side parts 2 are respectively denoted as side part A, side part B, and side part C from the outside to the inside. The outermost side part 2 refers to side part A. During actual installation, if the gland is pressed by hand, the gland is likely to tilt in the counterbore. If a tool is used to knock in the tilted gland, the gland will be uneven. Therefore, side part B for positioning is added. The outer peripheral surface of side part B is close to the size of the counterbore, and there will be a small gap between the two. In addition, a sufficient gap should be left between the outer peripheral surface of side part C and the counterbore for easy assembly. Therefore, the outer peripheral surface of side part B cannot replace the outer peripheral surface of side part C, otherwise the assembly efficiency of the gland will be affected due to too small a gap. Side part C is sleeved on the outer peripheral surface of the gland body 1, side part B is sleeved on the outer peripheral surface of side part C, and side part A is sleeved on the outer peripheral surface of side part C. The cap edge part 3 is located at the edge of the upper surface of side part A; as Figure 5 shown, the height of side part A is the smallest, that of side part B is the second smallest, and that of side part C is the largest. Such a progressive setting can further facilitate the installation of the gland.

[0050] Embodiment 4:

[0051] The difference from Embodiment 3 is that the gland body 1, the inner side part 2, and the cap edge part 3 are all made of hard plastic, and the outermost side part 2 is made of rubber material. Thus, due to the elasticity of the convex part 5 of the rubber material, when being squeezed, the rubber material will only be squeezed and deformed, and will not transfer the squeezing force to the upper surface of the gland body 1. In this way, the upper surface of the gland body 1 will not bulge and deform.

[0052] Specifically, there are three side parts 2 in total. The three side parts 2 are respectively denoted as side part A, side part B, and side part C from the outside to the inside. The outermost side part 2 refers to side part A; the gland body 1, the cap edge part 3, side part C, and side part B are all made of hard plastic, and side part A is made of rubber material.

[0053] In summary, when the present utility model is in use, the cap edge part 3 abuts against the chamfered part of the counterbore. On the one hand, it can prevent the gland body 1 from sinking, and on the other hand, it can avoid the generation of fine burrs due to scraping; through the vent hole 4, the space formed between the gland and the counterbore is connected to the outside, ensuring that the air in this space will not be compressed, and the upper surface of the gland body 1 always remains flat.

[0054] The above is based on the ideal embodiments of the present utility model as inspiration. Through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A track hole dust cover, characterized in that: include: a gland body (1), and A side portion (2), wherein the side portion (2) is sleeved on the outer peripheral surface of the gland body (1); A hat brim (3), wherein the hat brim (3) is sleeved on the outer peripheral surface of the side edge (2), and the hat brim (3) is installed at the edge of the upper surface of the side edge (2).

2. The track hole dust cover according to claim 1, characterized in that: The outer diameter of the side portion (2) is smaller than the inner diameter of the counterbore.

3. The track hole dust cover according to claim 1, characterized in that: Also includes: A vent hole (4), the vent hole (4) is provided at a middle position of the gland body (1), and the diameter of the vent hole (4) is d; Among them: 0.05mm≤d≤0.2mm.

4. The track hole dust cover according to claim 1, characterized in that: Also includes: A raised portion (5), wherein the raised portion (5) is sleeved on the outer peripheral surface of the side portion (2), the cap edge portion (3) is sleeved on the outer peripheral surface of the raised portion (5), and the cap edge portion (3) is located at the edge of the upper surface of the raised portion (5); Wherein: the outer diameter of the protrusion (5) is greater than the inner diameter of the counterbore.

5. The track hole dust cover according to claim 4, characterized in that: Also includes: A supporting ring (6) and a plurality of supporting blocks (7), wherein the supporting ring (6) and the supporting blocks (7) are both located on the inner side of the gland body (1), and the supporting blocks (7) are located on the outer side of the supporting ring (6), and the plurality of supporting blocks (7) are distributed in a ring shape at equal intervals.

6. The track hole dust cover according to claim 5, characterized in that: The height of the outer circumference of the protruding portion (5) is H1, and the height of the outer circumference of the supporting ring (6) and the supporting block (7) are both H2; Among them: H1<H2.

7. The track hole dust cover according to claim 4, characterized in that: The lower surfaces of the side edge portion (2) and the raised portion (5) are both provided with a guide portion (8), and the guide portion (8) is arranged in a state of being inclined downward.

8. The track hole dust cover according to claim 5, characterized in that: The gland body (1), the side edge (2), the cap edge (3), the raised portion (5), the supporting ring (6) and the supporting block (7) are all made of hard plastic.

9. The track hole dust cover according to claim 5, characterized in that: The gland body (1), the side edge (2), the cap edge (3), the supporting ring (6) and the supporting block (7) are all made of hard plastic, and the raised portion (5) is made of rubber plastic.

10. The track hole dust cover according to claim 1, characterized in that: Also includes: A plurality of side portions (2), wherein the plurality of side portions (2) are sequentially sleeved on the outer peripheral surface of the pressure cover body (1), the lower surfaces of the plurality of side portions (2) are all provided with guide portions (8), the cap edge portion (3) is sleeved on the outer peripheral surface of the outermost layer of the side portions (2), and the cap edge portion (3) is located at the edge of the upper surface of the outermost layer of the side portions (2).

11. The track hole dust cover according to claim 10, characterized in that: The gland body (1), the side edge (2) and the cap edge (3) are all made of hard plastic.

12. The track hole dust cover according to claim 10, characterized in that: The gland body (1), the inner side edge portion (2) and the cap edge portion (3) are all made of hard plastic, and the outermost side edge portion (2) is made of rubber material.

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