Sealing unit for vehicle linear guide system and vehicle

Abstract

The present invention provides a sealing unit of a vehicle linear guide system and a vehicle, wherein the sealing unit is used to provide sealing for a linear guide (G) fixed to a vehicle body and capable of sliding along a slider (C), and comprises: two first sealing members (S1) in the form of long strip covers, which are used to be arranged on both sides of the linear guide (G) in the width direction (W), fixed to the bottom of the vehicle body and provide a downward opening (S1m); a second sealing member (S2), which is used to be fixedly connected to the first sealing member (S1) and partially surround the linear guide (G) in the length direction (L) below and on both sides in the width direction (W) of the linear guide (G); and a third sealing member (S3), which is used to be fixed to the slider (C) and located inside the second sealing member (S2) in the width direction (W), and extends into the inner cavity of the first sealing member (S1) through the opening (S1m). The sealing unit according to the present invention has good sealing performance, and the vehicle according to the present invention has the same advantages.

Description

Technical Field

[0001] The present invention relates to a linear guide rail system of a vehicle, and in particular to a sealing unit used for the linear guide rail system of a vehicle and a vehicle comprising the linear guide rail system. Background Art

[0002] For example, for a maglev train, a linear guide system is usually installed between the air spring system in the steering system and the train body.

[0003] The direction of train travel is defined as longitudinal, and the linear guide system transmits longitudinal force and vertical force. When the train turns, the linear guide in the linear guide system moves laterally (perpendicular to the longitudinal direction of the train travel). This lateral movement allows the car body to adapt to the curved track and move smoothly.

[0004] Figure 1 A schematic diagram of a possible linear guide system from above. Figure 1 The linear guide system includes a linear guide G, a slider C and an accordion cover St.

[0005] The slider C cooperates with the linear guide G, and the two move relative to each other along the length direction L of the linear guide G. The linear guide G is fixed to the bottom of the train body as a component that can move laterally, and the slider C is fixed to the air spring system as a stationary component.

[0006] When the train is running, splashing water is easily stirred up. If the linear guide system is directly exposed to the external environment, the linear guide G with splashing water will quickly rust. Therefore, an accordion cover St is provided, which covers the linear guide G below the linear guide G and on both sides of the linear guide G in the width direction W.

[0007] However, referring to Figure 2 , for the above linear guide system, some water still enters the accordion cover St, which is detrimental to the life of the linear guide system and the safe operation of the vehicle. Summary of the invention

[0008] The object of the present invention is to overcome or at least alleviate the deficiencies of the above-mentioned prior art and to provide a sealing unit for a vehicle linear guide system and a vehicle comprising the sealing unit.

[0009] According to a first aspect of the present invention, a sealing unit of a vehicle linear guide system is provided, which is used to provide a sealing function for a linear guide fixed to a vehicle body and capable of sliding along a slider, and comprises:

[0010] Two first sealing members, which are in the shape of long strips of covers, are used to be fixed to the bottom of the vehicle body and extend along the length direction of the linear guide rail, the first sealing member provides an opening open downward, and the two first sealing members are used to be arranged on both sides of the linear guide rail in the width direction;

[0011] a second sealing member, which is used to be fixedly connected to the two first sealing members and surround a partial area of ​​the linear guide in the length direction below the linear guide and on both sides in the width direction; and

[0012] The third seal is in the shape of a long strip of cover, which is used to be fixed to the slider and is located on the inner side of the second seal in the width direction. The third seal partially passes through the openings of the two first seals and extends into the inner cavity of the first seal. The third seal surrounds a partial area of ​​the linear guide in the length direction below the linear guide and on both sides in the width direction.

[0013] In at least one embodiment, when the first seal, the second seal and the vehicle body are connected together, and the third seal is connected to the slider,

[0014] During the sliding of the linear guide rail along the slider, the second seal and the third seal always have a partially overlapping area in the length direction.

[0015] In at least one embodiment, in the length direction, the length of the first seal is equal to the length of the linear guide rail, the lengths of the second seal and the third seal are both less than the length of the linear guide rail, and the sum of the lengths of the second seal and the third seal is greater than the length of the linear guide rail.

[0016] In at least one embodiment, the second seal is connected to the first seal via a fastener, and the second seal comprises:

[0017] A second sealing member body, which is in the shape of an elongated cover and is used for fixedly connecting with the two first sealing members; and

[0018] The two second sealing member pressure strips are in the shape of long strips and are used to be connected with the second sealing member body and press the second sealing member body against the first sealing member.

[0019] In at least one embodiment, the second sealing member is welded to the first sealing member.

[0020] In at least one embodiment, a portion of the third seal extending into the inner cavity of the first seal is formed with an outwardly inclined portion, and the outwardly inclined portion extends in the width direction in a direction away from the inner cavity of the third seal and is inclined downward.

[0021] In at least one embodiment, in the width direction, a size of the outwardly inclined portion is larger than a size of the opening.

[0022] In at least one embodiment, the cross-section of the first seal perpendicular to the length direction is C-shaped, and the first seal forms two inward buckled portions on both sides of the opening in the width direction, and the inward buckled portions extend toward the opening along the width direction and tilt downward.

[0023] In at least one embodiment, a plurality of leakage holes are formed on the surface of the second sealing member and / or the third sealing member for being arranged below the linear guide rail.

[0024] According to a second aspect of the present invention, there is provided a vehicle comprising a vehicle body, a linear guide rail, a slider and a sealing unit;

[0025] The linear guide rail is installed at the bottom of the vehicle body with its length direction perpendicular to the travel direction of the vehicle; the slider cooperates with the linear guide rail so that the linear guide rail and the slider can move relative to each other along the length direction, and the slider is installed to the steering system of the vehicle; wherein,

[0026] The sealing unit is a sealing unit according to the present invention;

[0027] The bottom of the vehicle body is recessed upward to form two grooves, and each of the first sealing members of the sealing unit is at least partially accommodated in one of the grooves.

[0028] The sealing unit according to the present invention has good sealing performance, and the vehicle according to the present invention has the same advantage. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of a linear guide system using an accordion cover from above.

[0030] Figure 2 yes Figure 1 Schematic diagram of a cross section perpendicular to the length direction.

[0031] Figure 3 Schematic diagram of a cross section perpendicular to the length direction of a vehicle linear guide system according to one embodiment of the present invention.

[0032] Figure 4Schematic diagram of an overall vehicle linear guide system according to an embodiment of the present invention.

[0033] Figure 5 Schematic diagram of a partial structure of a vehicle linear guide system according to an embodiment of the present invention.

[0034] Figure 6 is a side view of a sealing unit of a vehicle linear guide system according to one embodiment of the present invention.

[0035] Figure 7 yes Figure 3 A partially enlarged schematic diagram.

[0036] Description of reference numerals:

[0037] L length direction; W width direction; G linear guide; C slider; St bellows; T body; Tg slot; B bracket;

[0038] S1 first sealing member; S11 inner buckle portion;

[0039] S2 second sealing member; S2a second sealing member body; S2b second sealing member bead; S2h leakage hole;

[0040] S3 third seal; S30 upper embedded part; S31 outward inclined part. DETAILED DESCRIPTION

[0041] The exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present invention, and are not intended to exhaust all possible modes of the present invention, nor to limit the scope of the present invention.

[0042] Reference Figures 3 to 7 A sealing unit for a vehicle linear guide system and a vehicle including the sealing unit according to the present invention are introduced.

[0043] Unless otherwise specified, in the figures, L represents the length direction of the sealing unit, which is consistent with the length direction of the linear guide G and, for example, the lateral direction (width direction) of the vehicle; W represents the width direction of the sealing unit, which is consistent with the width direction of the linear guide G and, for example, the longitudinal direction (travel direction) of the vehicle.

[0044] Reference Figure 3 and Figure 4 The vehicle linear guide system includes a slider C, a linear guide G and a sealing unit.

[0045] The linear guide rail G is fixed to the bottom of the vehicle body T, and can move along with the vehicle body T in a lateral direction perpendicular to the forward direction of the vehicle (ie, the length direction L of the linear guide rail G).

[0046] The slider C is, for example, fixed to an air spring system in a steering system of a vehicle, and the slider C serves as a stationary component to provide constraints for the sliding movement of the linear guide G.

[0047] The sealing unit covers the linear guide G below and on both sides of the linear guide G in the width direction W. The sealing unit includes a first seal S1, a second seal S2 and a third seal S3. Preferably, the first seal S1, the second seal S2 and the third seal S3 are all made of stainless steel.

[0048] On the one hand, the first seal S1 prevents foreign matter from contacting the linear guide G, and on the other hand, it provides a mounting base for the second seal S2. The second seal S2 is partially sleeved on the outside of the third seal S3, and the second seal S2 and the third seal S3 can move relative to each other (closer to or farther away from each other). In the length direction L, the length of the first seal S1 can be equal to the length of the linear guide G; the lengths of the second seal S2 and the third seal S3 can both be less than the length of the linear guide G, so that the sealing unit will not interfere during the movement of the linear guide system, and the sum of the lengths of the second seal S2 and the third seal S3 is slightly greater than the length of the linear guide G, so that during the movement of the linear guide system, the second seal S2 and the third seal S3 at least partially overlap at any movement position.

[0049] There are two first sealing members S1 , which are respectively arranged on both sides of the linear guide G in the width direction W. Each first sealing member S1 is in the shape of a long strip cover and is fixed to the bottom of the vehicle body T.

[0050] Preferably, two grooves Tg are formed concavely at the bottom of the vehicle body T, and each groove Tg is used to accommodate a first sealing member S1. The first sealing member S1 is substantially completely accommodated in the groove Tg, or only a small portion of the first sealing member S1 is exposed from the groove Tg.

[0051] The cross section of the first seal S1 perpendicular to the length direction L is roughly C-shaped, and the C-shaped opening faces downward to form an opening S1m of the first seal S1. The interior of the C-shaped area (i.e., the inner cavity of the first seal S1) is used to accommodate the upper edge of the third seal S3 (i.e., the upper embedded portion S30 hereinafter).

[0052] Preferably, refer to Figure 7The first sealing member S1 forms two inclined inner buckle portions S11 on both sides of the opening S1m in the width direction W. Each inner buckle portion S11 extends toward the opening S1m along the width direction W and is inclined downward, thereby preventing foreign matter (such as splashing water and other liquids and particles) from entering the first sealing member S1, and at the same time facilitating the discharge of foreign matter (such as splashing water and other liquids and particles) that accidentally enter the inner cavity of the first sealing member S1 (hereinafter referred to as Figure 7 for further introduction).

[0053] The second sealing member S2 includes a second sealing member body S2a and two second sealing member beading strips S2b.

[0054] The second sealing body S2a is in the shape of a long strip of cover, and the cross section of the second sealing body S2a perpendicular to the length direction L is substantially U-shaped and opens upward. A portion of the linear guide G in the length direction L is accommodated in the inner cavity of the second sealing body S2a, so that the second sealing body S2a covers a portion of the linear guide G in the length direction L below the linear guide G and on both sides of the linear guide G in the width direction W.

[0055] In the length direction L, the second sealing member body S2a has one end open and the other end closed, wherein the end close to the slider C is the open end and the end away from the slider C is the closed end. Figures 4 to 6 The left end of the second seal body S2a (or the second seal S2) in the figure is an open end, and the right end is a closed end. The open end is used to form a nest with the third seal S3, and the closed end is used to form a closure at the end of the linear guide G. The closed end is sealed and connected to the vehicle body T.

[0056] Preferably, a plurality of leakage holes S2h are formed on the surface of the second sealing member body S2a located below the linear guide rail G, so that the liquid accidentally entering the inner cavity of the second sealing member body S2a can be discharged through the leakage holes S2h.

[0057] The upper portions of both side walls of the second seal body S2 a in the width direction W are sealingly connected to the first seal S1 .

[0058] The second sealing strip S2b is in the shape of a long strip, and the area where the second sealing body S2a is connected to each first sealing member S1 is pressed by a second sealing strip S2b, that is, the second sealing strip S2b is arranged on the surface of the part of the second sealing body S2a connected to the first sealing member S1 that is away from the first sealing member S1. Preferably, the second sealing strip S2b, the second sealing body S2a and the first sealing member S1 are connected together using screws or bolts. The second sealing strip S2b helps the second sealing body S2a to be connected to the first sealing member S1 smoothly and tightly.

[0059] It is understood that any of the two second sealing strips S2b mentioned in the present application, that is, a second sealing strip S2b corresponding to a first sealing member S1, can be but not necessarily be a single piece. In other words, a second sealing strip S2b can be composed of multiple sealing strip segments.

[0060] It is worth noting that in other embodiments, the second seal body S2a can also be fixed to the first seal S1 by welding. Since the welding process can ensure that the second seal body S2a and the first seal S1 form a good bond, in such an embodiment, the second seal bead S2b can be omitted. In other words, in this case, the second seal body S2a is equivalent to the second seal S2.

[0061] The third seal S3 is in the shape of a long strip of cover, and the cross section of the third seal S3 perpendicular to the length direction L is substantially U-shaped and opens upward. A portion of the linear guide G in the length direction L is accommodated in the inner cavity of the third seal S3, so that the third seal S3 covers a portion of the linear guide G in the length direction L below the linear guide G and on both sides of the linear guide G in the width direction W.

[0062] The third seal S3 is nested inside the second seal S2 in the width direction W, so that during the movement of the linear guide G, the third seal S3 and the second seal S2 are allowed to move relative to each other in the length direction L, which is reflected as the extension and shortening of the sealing unit.

[0063] The third seal S3 is fixed to the slider C. Figure 5 One end of the third sealing member S3 close to the slider C in the length direction L is a fixed end, and the other end is a suspended end. The fixed end and the slider C are connected together using a bracket B and a screw.

[0064] The upper parts of the two side walls of the third seal S3 in the width direction W extend into the inner cavity of the first seal S1 to form an upper embedded part S30, thereby helping to prevent foreign matter from directly passing through the gap between the third seal S3 and the first seal S1 from the area not covered by the second seal S2 and entering the inner cavity of the third seal S3.

[0065] Reference Figure 3The upper embedded portion S30 includes an outwardly inclined portion S31, which extends in the width direction W in a direction away from the inner cavity of the third seal S3 and is inclined downward. Preferably, in the width direction W, the size of the outwardly inclined portion S31 is larger than the size of the opening S1m. The outwardly inclined portion S31 can cooperate with the first seal S1 to prevent foreign matter (such as splashing water and other liquids and particles) from entering the first seal S1 and the third seal S3, and at the same time, it helps, for example, liquid that accidentally enters the inner cavity of the first seal S1 to flow outward along the outwardly inclined portion S31 without entering the inner cavity of the third seal S3 (hereinafter combined with Figure 7 for further introduction).

[0066] In this embodiment, the upper embedded portion S30 is in a meandering hook shape in a cross section perpendicular to the length direction L. Specifically, the direction of the side wall of the third seal S3 in the width direction W extending from the portion located at the opening S1m to the edge of the side wall is as follows: the upper embedded portion S30 first extends upward and extends in the direction close to the linear guide G in the width direction W until it is very close to the inner wall of the first seal S1, and then the upper embedded portion S30 bends and turns back toward the outside, and the turned back portion extends downward and in the direction away from the linear guide G in the width direction W. The upper embedded portion S30 and the inner buckle portions S11 on both sides form a labyrinth-like sealing area.

[0067] Preferably, a plurality of leakage holes (not shown) are formed on the surface of the third sealing member S3 below the linear guide rail G, so that the liquid accidentally entering the inner cavity of the third sealing member S3 can be discharged through the leakage holes.

[0068] Next, a preferred assembly sequence of the components of a vehicle linear guide system is introduced.

[0069] First, the first seal S1 is installed to the vehicle body T, then the linear guide G and the slider C are installed, then the third seal S3 is installed, and finally the second seal S2 is installed.

[0070] Next, take splash water as an example, combined with Figure 7 The following describes how the outwardly inclined portion S31, the inwardly buckled portion S11 and the drain hole S2h prevent splashing water from entering and help splashing water to be discharged. The hollow arrow in the figure shows a possible discharge method of splashing water that enters the sealing unit.

[0071] It should be understood that, since the first sealing member S1 is tightly connected to the vehicle body T, splashing water will not enter the interior of the sealing unit from the outside through the top of the first sealing member S1 .

[0072] Furthermore, since the first sealing member S1 is tightly connected to the second sealing member S2, splashing water is not likely to enter the interior of the sealing unit from the outside in the area covered by the second sealing member S2.

[0073] Since the third seal S3 may be partially exposed from the second seal S2 at different movement positions of the linear guide G, that is, at this position, the outer periphery of the linear guide G is sealed and protected by the cooperation of the first seal S1 and the third seal S3. Although the upper embedded portion S30 of the third seal S3 extends into the first seal S1 to form a labyrinth-like sealing area, since the upper embedded portion S30 does not contact the first seal S1, splashing water may enter the inner cavity of the first seal S1 from the opening S1m of the first seal S1.

[0074] In the above case, since the inwardly bent portion S11 and the outwardly inclined portion S31 both form a downwardly inclined posture, the water entering the above-mentioned labyrinth-like sealing area will flow toward the opening S1m along the outwardly inclined portion S31 and the inwardly bent portion S11, and finally flow out of the opening S1m.

[0075] For the area where the third seal S3 is exposed from the second seal S2, water can flow out directly from the opening S1m; and considering that the relative positions of the components of the linear guide system may change during the movement, during the relative movement of the second seal S2 and the third seal S3, even if some water enters the interior of the third seal S3, it can be discharged from the leakage holes of the third seal S3 and the second seal S2.

[0076] It should be understood that the present invention also provides a vehicle including the linear guide system of the sealing unit, which can be a rail vehicle (vehicle) such as a train, a subway, a maglev train, etc.

[0077] The present invention has at least one of the following advantages:

[0078] (i) The length of the first seal S1 is equal to the length of the linear guide G, and in any state of the vehicle linear guide system during movement, the second seal S2 and the third seal S3 have overlapping parts in the length direction L, which not only ensures the expansion and contraction of the sealing unit, but also prevents foreign matter (especially splashing water) from entering the interior of the sealing unit.

[0079] (ii) The upper embedded portion S30 of the third sealing member S3 forms a labyrinth-like sealing structure with the first sealing member S1, and the sealing structure has a downwardly inclined inner portion S11 and an outer portion S31. Even if some splashing water enters the sealing structure, it will flow out from the opening S1m under the guidance of the outer portion S31 and the inner portion S11.

[0080] (iii) The drainage hole S2h can help the water accidentally entering between the second sealing member S2 and the third sealing member S3 to be discharged.

[0081] (iv) The entire sealing unit has good sealing performance, the linear guide G is not easy to rust, and the vehicle linear guide system has high reliability and long service life.

[0082] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make various modifications to the above-mentioned embodiments of the present invention under the guidance of the present invention without departing from the scope of the present invention.

[0083] For example, in order to facilitate the discharge of liquid that accidentally enters the sealing unit, the lower bottom surfaces of the second seal S2 and the third seal S3 can also extend obliquely, that is, in the length direction L, the horizontal height of the end where the second seal S2 and the third seal S3 are connected to each other is lower than the horizontal height of the end where the two are separated from each other.

[0084] For example, refer to Figure 3 The bottom surfaces of the second sealing member S2 and the third sealing member S3 may have a V-shaped cross section, and the leakage holes may be arranged at the bottom of the V-shape to facilitate the discharge of the liquid.

Claims

1. A sealing unit for a vehicle linear guide system, which is used to provide sealing for a linear guide (G) fixed to a vehicle body (T) and capable of sliding along a slider (C), characterized in that: include: Two first sealing members (S1) are in the form of long strips of covers, and are used to be fixed to the bottom of the vehicle body (T) and extend along the length direction (L) of the linear guide rail (G); the first sealing member (S1) provides an opening (S1m) open downwards; the two first sealing members (S1) are used to be arranged on both sides of the linear guide rail (G) in the width direction (W); a second sealing member (S2) which is fixedly connected to the two first sealing members (S1) and surrounds a portion of the linear guide rail (G) in the length direction (L) below the linear guide rail (G) and on both sides in the width direction (W); and The third seal (S3) is in the form of a long strip of cover, which is used to be fixed to the slider (C) and is located on the inner side of the second seal (S2) in the width direction (W). The third seal (S3) partially passes through the openings (S1m) of the two first seals (S1) and extends into the inner cavity of the first seal (S1). The third seal (S3) surrounds a partial area of ​​the linear guide (G) in the length direction (L) below the linear guide (G) and on both sides in the width direction (W).

2. The sealing unit according to claim 1, characterized in that When the first seal (S1), the second seal (S2) and the vehicle body (T) are connected together, and the third seal (S3) is connected to the slider (C), When the linear guide rail (G) slides along the slider (C), the second seal (S2) and the third seal (S3) always have a partially overlapping area in the length direction (L).

3. The sealing unit according to claim 2, characterized in that: In the length direction (L), the length of the first seal (S1) is equal to the length of the linear guide rail (G), the lengths of the second seal (S2) and the third seal (S3) are both shorter than the length of the linear guide rail (G), and the sum of the lengths of the second seal (S2) and the third seal (S3) is longer than the length of the linear guide rail (G).

4. The sealing unit according to claim 1, characterized in that: The second sealing member (S2) is connected to the first sealing member (S1) via a fastener, and the second sealing member (S2) comprises: A second sealing member body (S2a) in the form of an elongated cover, used for fixedly connecting with the two first sealing members (S1); and The two second sealing member pressure strips (S2b) are in the shape of long strips and are used to be connected with the second sealing member body (S2a) and to press the second sealing member body (S2a) against the first sealing member (S1).

5. The sealing unit according to claim 1, characterized in that The second sealing member (S2) is welded to the first sealing member (S1).

6. The sealing unit according to claim 1, characterized in that The portion of the third seal (S3) extending into the inner cavity of the first seal (S1) is formed with an outwardly inclined portion (S31), and the outwardly inclined portion (S31) extends in the width direction (W) in a direction away from the inner cavity of the third seal (S3) and is inclined downward.

7. The sealing unit according to claim 6, characterized in that In the width direction (W), the size of the outwardly inclined portion (S31) is larger than the size of the opening (S1m).

8. The sealing unit according to claim 1, characterized in that The cross-section of the first sealing member (S1) perpendicular to the length direction (L) is C-shaped, and the first sealing member (S1) forms two inward buckled portions (S11) on both sides of the opening (S1m) in the width direction (W), and the inward buckled portions (S11) extend toward the opening (S1m) along the width direction (W) and are inclined downward.

9. The sealing unit according to claim 1, characterized in that: The second seal (S2) and / or the third seal (S3) is / are provided with a plurality of leakage holes on the surface below the linear guide rail (G).

10. A vehicle comprising a vehicle body (T), a linear guide rail (G), a slider (C) and a sealing unit; The linear guide rail (G) is installed at the bottom of the vehicle body (T) with its length direction (L) perpendicular to the travel direction of the vehicle; the slider (C) cooperates with the linear guide rail (G) so that the linear guide rail (G) and the slider (C) can move relative to each other along the length direction (L), and the slider (C) is installed to the steering system of the vehicle; characterized in that: The sealing unit is a sealing unit according to any one of claims 1 to 9; The bottom of the vehicle body (T) is recessed upward to form two grooves (Tg), and each of the first seals (S1) of the sealing unit is at least partially accommodated in one of the grooves (Tg).

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