Multi-row common rail seat

Abstract

The utility model discloses a multi-row common rail seat and an automobile, the multi-row common rail seat comprises a rail and a seat, the rail comprises a lower sliding rail and upper sliding rails, the multi-row common rail seat further comprises limiting blocks, the limiting blocks are arranged between every two adjacent upper sliding rails, and the limiting blocks can slide along the lower sliding rails. The limiting blocks are used for limiting the minimum distance between the two adjacent upper sliding rails to prevent the thighs of a passenger from being pinched due to the fact that the distance between the two adjacent seats is too close; the limiting blocks only limit the minimum distance between the two adjacent upper sliding rails and do not limit the maximum distance between the two adjacent upper sliding rails, the strokes of the upper sliding rails cannot be sacrificed, and therefore the upper sliding rails can be subjected to large-stroke position adjustment on the lower sliding rails.

Description

Technical Field

[0001] This application relates to the technical field of vehicle seats, and particularly to a multi-row common-rail seat. Background Art

[0002] With the improvement of people's living standards, cars have gradually become the main means of transportation for family travel. At the same time, consumers have more and more requirements for the functions of vehicle seats.

[0003] In related technologies, vehicles adopt multi-row common-rail seats. As shown in Figure 1 the multi-row common-rail seat has at least two rows of seats 02 arranged along the length direction of the same rail 01, and each row of seats 02 can slide along the rail 01. The sliding strokes of the multi-row seats 02 located on the same rail 01 overlap. When the distance between two adjacent rows of seats 02 is too close, the thighs of passengers will be pinched.

[0004] In order to prevent the multi-row common-rail seat from pinching passengers, some technologies set a limiting structure on the rail 01 to limit the front and rear movement positions of each seat. However, this method will sacrifice the stroke of the seat 02, resulting in the seat 02 being unable to perform large-stroke position adjustment.

[0005] Therefore, how to ensure that the seat can perform large-stroke position adjustment on the premise of preventing the thighs of passengers from being pinched has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] This application provides a multi-row common-rail seat to ensure that the seat can perform large-stroke position adjustment on the premise of preventing the thighs of passengers from being pinched.

[0007] To achieve the above object, this application provides a multi-row common-rail seat, including a rail and seats.

[0008] The rail includes a lower rail and at least two upper rails. The upper rails can slide along the lower rail, and the upper rails are connected to the seats.

[0009] It further includes a limiting block arranged in the lower rail. The limiting block is arranged between any two adjacent upper rails to limit the minimum distance between two adjacent upper rails. The limiting block can slide in the lower rail under the push of the upper rail.

[0010] Preferably, in the above multi-row common-rail seat, the limiting block further has a guiding portion.

[0011] The guiding portion obliquely extends from the limiting block towards the corner. The guiding portion is in guiding cooperation with the corner of the lower rail to provide supporting forces in a first direction and a second direction to the lower rail.

[0012] Alternatively, the guiding portion has a first guiding portion disposed along a first direction and a second guiding portion disposed along a second direction. The first guiding portion and the second guiding portion are in guiding cooperation with the inner wall of the lower sliding rail to provide a supporting force to the lower sliding rail along the first direction and the second direction;

[0013] Wherein, the first direction is a direction perpendicular to the bottom wall of the lower sliding rail, and the second direction is a direction perpendicular to the length direction of the lower sliding rail.

[0014] Preferably, in the above multi-row common-rail seat, the limiting block has a protrusion, and the protrusion contacts the top wall or the bottom wall of the lower sliding rail.

[0015] Preferably, in the above multi-row common-rail seat, rollers are provided on both sides of the limiting block along a direction perpendicular to the length direction of the lower sliding rail, and the limiting block slides in the lower sliding rail through the rollers.

[0016] Preferably, in the above multi-row common-rail seat, the height of the limiting block along the first direction is less than the height of the upper sliding rail along the first direction.

[0017] The multi-row common-rail seat provided by the embodiment of the present application includes a track and a seat. The track includes a lower sliding rail and an upper sliding rail, and further includes a limiting block. A limiting block is provided between every two adjacent upper sliding rails, and the limiting block can slide along the lower sliding rail. The limiting block is used to limit the minimum distance between two adjacent upper sliding rails to prevent the thighs of passengers from being pinched when the distance between two adjacent seats is too close; the limiting block only limits the minimum distance between two adjacent upper sliding rails and does not limit the maximum distance between two adjacent upper sliding rails, without sacrificing the stroke of the upper sliding rail, so that the upper sliding rail can perform large-stroke position adjustment on the lower sliding rail. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some examples or embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings, and the present application can also be applied to other similar scenarios according to the provided drawings. Unless obvious from the language context or otherwise stated, the same reference numerals in the drawings represent the same structure or operation.

[0019] Figure 1 is a schematic structural diagram of a prior art multi-row common-rail seat;

[0020] Figure 2 is a schematic structural diagram of the multi-row common-rail seat of the present application;

[0021] Figure 3 is a schematic structural view of the track of the multi-row common-rail seat of the present application;

[0022] Figure 4 is a top view of the track of the multi-row common-rail seat of the present application;

[0023] Figure 5 is Figure 4 a sectional view taken along A-A in

[0024] Figure 6 is Figure 4 a sectional view taken along B-B in

[0025] Figure 7 is Figure 4 a sectional view taken along C-C in

[0026] Figure 8 is a schematic structural view of the multi-row common-rail seat of the present application at the front limit position of the track;

[0027] Figure 9 is a schematic structural view of the third-row seat of the multi-row common-rail seat of the present application at the rear limit position;

[0028] Figure 10 is a schematic structural view of the second-row seat and the third-row seat of the multi-row common-rail seat of the present application at the rear limit position;

[0029] Figure 11 is a schematic structural view of the multi-row common-rail seat of the present application at the rear limit position of the track;

[0030] Figure 12 is a schematic structural view of the cooperation between the limit block and the lower slide rail provided by the first embodiment of the present application;

[0031] Figure 13 is a schematic structural view of the cooperation between the limit block and the lower slide rail provided by the second embodiment of the present application;

[0032] Figure 14 is a schematic structural view of the cooperation between the limit block and the lower slide rail provided by the third embodiment of the present application.

[0033] The description of the drawings is as follows:

[0034] 01 - Track; 02 - Seat;

[0035] 1 - Track; 11 - Lower slide rail; 111 - Limiting arc; 112 - Corner; 12 - Upper slide rail; 13 - Limit block; 131 - Guide part; 132 - Protrusion; 133 - Roller; 2 - Seat. Detailed implementation manners

[0036] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related application, rather than limiting the application. The described embodiments are only a part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

[0037] It should be noted that for the convenience of description, only the parts related to the relevant application are shown in the drawings. Without conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily as long as the combined technical features are not contradictory. All feasible feature combinations are the technical contents clearly recorded herein. Any one of the sub-features included in the same sentence can be applied independently without necessarily being applied together with other sub-features.

[0038] As shown in the present application and the claims, unless the context clearly indicates an exception, words such as "a", "an", "one", and / or "the" are not specifically singular and may also include plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. An element defined by the statement "comprising one..." does not exclude the existence of another identical element in the process, method, commodity, or device including the element.

[0039] Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B; "and / or" herein is only a description of the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.

[0040] Please refer to Figures 1 - 14 。

[0041] Some embodiments of the present application disclose a multi-row common-rail seat, including a track 1 and a seat 2. The track 1 includes a lower slide rail 11 and an upper slide rail 12. The lower slide rail 11 is installed on the vehicle body, and the seat 2 is installed on the upper slide rail 12.

[0042] The number of upper slide rails 12 is at least two, and multiple upper slide rails 12 are arranged along the length direction of the lower slide rail 11. The number of seats 2 is equal to the number of the upper slide rails 12. The upper slide rail 12 can slide along the lower slide rail 11 to realize the position adjustment of the seat 2. The number of the upper slide rails 12 can be equal to the number of the seats 2 or more than the number of the seats 2. In the embodiment where the number of the upper slide rails 12 is more than the number of the seats 2, a spare installation position can be provided for the seat 2.

[0043] The multi-row common-rail seat disclosed in this solution further includes a limit block 13. The limit block 13 is arranged between any two adjacent upper slide rails 12. The limit block 13 can slide in the lower slide rail 11 under the pushing action of the upper slide rail 12. The limit block 13 is used to limit the minimum distance between two adjacent upper slide rails 12 to prevent the thighs of passengers from being pinched due to the too-close distance between two adjacent seats 2.

[0044] In the related art, the running position of the seat can only be judged by calculating the Hall number of the motor by the controller. If the Hall number is lost, the seat will not stop when running to the theoretical limit position, and the front and rear row seats will collide with each other. In this solution, by arranging the limit block 13 between two adjacent seats to form a hard limit between two adjacent seats, and the hard limit can be dynamically adjusted according to the movement of the seat, it can ensure the minimum distance between the front and rear row slide rails and prevent pinching passengers in the case of the loss of the Hall number.

[0045] When the upper slide rail 12 moves along the lower slide rail 11 and the end part in the length direction of the upper slide rail 12 does not contact the limit block 13, the limit block 13 is in a static state in the lower slide rail 11. When the end part in the length direction of the upper slide rail 12 contacts the limit block 13, the upper slide rail 12 can push the limit block 13, and at this time, the limit block 13 moves along the lower slide rail 11 synchronously with the upper slide rail 12. The limit block 13 only limits the minimum distance between two adjacent upper slide rails 12 and does not limit the maximum distance between two adjacent upper slide rails 12, without sacrificing the stroke of the upper slide rail 12, so that the upper slide rail 12 can perform large-stroke position adjustment on the lower slide rail 11.

[0046] The upper slide rail 12 can reciprocate in the length direction of the lower slide rail 11, and the limit block 13 can also reciprocate in the length direction of the lower slide rail 11. The moving power of the limit block 13 comes from the upper slide rail 12 at any end in the length direction of the limit block 13, and the limit block 13 can move along the lower slide rail 11 under the pushing action of the upper slide rail 12.

[0047] To prevent the upper slide rail 12 from sliding out from both ends in the length direction of the lower slide rail 11, front limit pieces and rear limit pieces for limiting the upper slide rail 12 connected to the front row seat and the upper slide rail 12 connected to the rear row seat in the multi-row seats are arranged on the lower slide rail 11.

[0048] The multi-row common-rail seat can be a three-row common-rail seat, but is not limited to a three-row common-rail seat. For the convenience of description, this solution takes the three-row common-rail seat shown as an example for illustration. It includes a lower slide rail 11, three upper slide rails 12, two limit blocks 13 and three seats 2. A limit block 13 is arranged between adjacent two upper slide rails 12, and the minimum distance between adjacent two upper slide rails 12 is the dimension of the limit block 13 along the length direction of the lower slide rail 11. Figure 2 For the convenience of subsequent description, the three upper slide rails 12 are respectively named the first upper slide rail, the second upper slide rail and the third upper slide rail. The limit block located between the first upper slide rail and the second upper slide rail is named the first limit block, and the limit block 13 located between the second upper slide rail and the third upper slide rail is named the second limit block. The seats 2 installed on the first upper slide rail, the second upper slide rail and the third upper slide rail are respectively named the first-row seat, the second-row seat and the third-row seat. The side facing the passenger is the front side, and the side facing away from the passenger is the rear side.

[0049] As shown in the figure, it is a diagram of the seat 2 of the multi-row common-rail seat moving to the front limit position. At this time, the front end of the first upper slide rail abuts against the front limiting member of the lower slide rail 11, the rear end of the first upper slide rail abuts against the front end of the first limit block, the rear end of the first limit block abuts against the front end of the second upper slide rail, the rear end of the second upper slide rail abuts against the front end of the second limit block, and the rear end of the second limit block abuts against the front end of the third upper slide rail.

[0050] As Figure 8 shown, it is a diagram of the seat 2 of the multi-row common-rail seat moving to the rear limit position. At this time, the rear end of the third upper slide rail abuts against the rear limiting member of the lower slide rail 11, the front end of the third upper slide rail abuts against the rear end of the second limit block, the front end of the second limit block abuts against the rear end of the second upper slide rail, the front end of the second upper slide rail abuts against the rear end of the first limit block, and the front end of the first limit block abuts against the rear end of the first upper slide rail.

[0051] As Figure 11 shown, taking the multi-row common-rail seat as a three-row common-rail seat as an example to illustrate the maximum stroke of the upper slide rail 12. Assume that the first upper slide rail, the first limit block, the second upper slide rail and the second limit block move to the front limit position, and the third upper slide rail moves to the rear limit position. As

[0052] shown, the maximum stroke of the third upper slide rail moving is the distance between the front end of the third upper slide rail and the rear end of the second limit block; Figure 9 Assume that the first upper slide rail and the first limit block move to the front limit position, and the second upper slide rail, the second limit block and the third upper slide rail move to the rear limit position. As

[0053] shown, the maximum stroke of the second upper slide rail moving is the distance between the front end of the second upper slide rail and the rear end of the first limit block. Figure 10 As

[0054] Figures 8 - 11 shows the process in which multiple seats 2 of a multi-row common-rail seat move successively from the front limit position of the lower slide rail 11 to the rear limit position of the lower slide rail 11, as Figure 8 multiple seats 2 of the multi-row common-rail seat are located at the front limit position of the lower slide rail 11, as Figure 9 the third-row seat and the third upper slide rail move synchronously to the rear limit position of the lower slide rail 11, and then as Figure 10 the second-row seat and the second upper slide rail move synchronously, and at the same time push the second limit block to move until the rear end of the second limit block abuts against the front end of the third upper slide rail, and the rear end of the second upper slide rail abuts against the front end of the second limit block, and finally as Figure 11 the first-row seat and the first upper slide rail move synchronously, and at the same time push the first limit block 13 to move until the rear end of the first limit block abuts against the front end of the second upper slide rail, and the rear end of the first upper slide rail abuts against the front end of the first limit block.

[0055] The seat 2 moves synchronously with the upper slide rail 12 connected thereto. Wherever the upper slide rail 12 moves, the seat 2 moves to the same position as the upper slide rail 12. For the convenience of subsequent description, only the movement of the upper slide rail 12 is described, and the movement of the seat 2 is consistent with that of the upper slide rail 12.

[0056] The length of the limit block 13 is designed by those skilled in the art according to the anti-pinch requirement, and the length of the upper slide rail 12 is approximately equal to the dimension of the seat 2 along the length direction of the upper slide rail 12.

[0057] The lower slide rail 11 has a cavity for installing the upper slide rail 12 and the limit block 13, as Figure 3 and 6 shown. For the convenience of subsequent description, the inner wall of the cavity close to the seat is named the top wall, the inner wall of the cavity far from the seat is the bottom wall, the top wall is parallel to the bottom wall, the side wall is between the bottom wall and the top wall, and the connection positions of the top wall and the bottom wall with the side wall form a corner 112. The lower slide rail 11 has four corners 112.

[0058] The limit block 13 further includes a guiding portion 131, and the guiding portion 131 protrudes from the limit block 13.

[0059] In some embodiments, the guiding portion 131 obliquely extends from the limit block 13 towards the corner 112, and the guiding portion 131 is in guiding cooperation with the corner 112 of the lower slide rail 11 to provide a supporting force to the lower slide rail 11 in the first direction and the second direction.

[0060] Wherein, the first direction is the direction perpendicular to the bottom wall of the lower slide rail 11, and the second direction is the direction perpendicular to the length direction of the lower slide rail.

[0061] One end of the limiting block 13 close to the top wall of the cavity is the top of the limiting block 13, and one end of the limiting block 13 close to the bottom wall of the cavity is the bottom of the limiting block 13. The guiding portion 131 is in close contact with the corner 112 of the lower slide rail 11 to guide the movement of the limiting block 13 in the cavity. The limiting block 13 can provide supporting forces to the lower slide rail 11 in the first direction and the second direction, and the corner 112 can exert reaction forces on the limiting block 13 in the first direction and the second direction to prevent the limiting block 13 from shaking up and down, left and right in the cavity, and improve the stability of the movement of the limiting block 13 in the lower slide rail 11. As Figure 7 , Figure 11 and Figure 12 are embodiments in which the limiting block 13 has the guiding portion 131. In the figure, the guiding portion 131 is located at the top of the limiting block 13.

[0062] Optionally, the limiting block 13 and the guiding portion 131 can be of an integral structure or a split structure. In the embodiment where the limiting block 13 and the guiding portion 131 are of a split structure, the limiting block 13 and the guiding portion 131 are fixedly connected.

[0063] In order to improve the smoothness of the sliding of the limiting block 13 in the lower slide rail 11, it can be achieved by reducing the contact area between the limiting block 13 and the lower slide rail 11, or by changing the friction form between the limiting block 13 and the lower slide rail 11.

[0064] In some other embodiments, the guiding portion 131 has two parts. One part is the first guiding portion arranged in the first direction, and the other part is the second guiding portion arranged in the second direction. The first guiding portion and the second guiding portion are in guiding cooperation with the inner wall of the lower slide rail 11 to provide supporting forces to the lower slide rail 11 in the first direction and the second direction. The inner wall of the lower slide rail 11 exerts reaction forces on the first guiding portion and the second guiding portion to prevent the limiting block 13 from shaking up and down, left and right in the cavity, and improve the stability of the movement of the limiting block 13 in the lower slide rail 11.

[0065] In the embodiment of improving the sliding smoothness of the limiting block 13 by reducing the contact area between the limiting block 13 and the lower slide rail 11, the limiting block 13 has a protrusion 132. The protrusion 132 can be located at the top and / or bottom of the limiting block 13. The limiting block 13 is separated from the wall surface of the lower slide rail 11 by a certain distance through the protrusion 132, and the limiting block 13 is in sliding cooperation with the bottom wall of the lower slide rail 11 through the protrusion 132 to reduce the contact area between the limiting block 13 and the bottom wall of the lower slide rail 11, reduce the friction between the limiting block 13 and the lower slide rail 11, and improve the sliding smoothness of the limiting block 13 on the lower slide rail 11.

[0066] In an embodiment where the sliding smoothness of the limit block 13 is improved by changing the friction form between the limit block 13 and the lower slide rail 11, rollers 133 are provided on both sides of the limit block 13 along the length direction perpendicular to the lower slide rail 11. The limit block 13 is supported by the rollers 133 to be separated from the bottom wall of the lower slide rail 11 by a certain distance, and the bottom wall of the limit block 13 does not contact the bottom wall of the lower slide rail 11. The limit block 13 is slidably engaged with the bottom wall of the lower slide rail 11 through the rollers 133. On the one hand, the contact area between the limit block 13 and the bottom wall of the lower slide rail 11 is reduced, and at the same time, the friction between the limit block 13 and the bottom wall of the lower slide rail 11 is rolling friction, effectively reducing the friction force between the limit block 13 and the lower slide rail 11 and improving the sliding smoothness of the limit block 13 on the lower slide rail 11.

[0067] In an embodiment where rollers 133 are provided on both sides of the limit block 13 along the length direction perpendicular to the lower slide rail 11, the dimension of the limit block 13 along the width direction of the lower slide rail 11 is smaller than the width of the lower slide rail 11. In this embodiment, the guiding portion 131 extends obliquely upward from the corner of the limit block 13 to cooperate with the corner 112 of the lower slide rail 11; in an embodiment where no rollers 133 are provided on both sides of the limit block along the length direction perpendicular to the lower slide rail 11, the dimension of the limit block 13 along the width direction of the lower slide rail 11 is close to the width of the lower slide rail 11, and the guiding portion 131 extends vertically upward from the edge of the limit block 13 to cooperate with the corner 112. The shape of the end of the guiding portion 131 that cooperates with the corner 112 is adapted to the shape of the corner 112.

[0068] In an embodiment where a protrusion 132 is provided on the bottom wall of the limit block 13, the protrusion 132 can be a strip-shaped protrusion or a dot-shaped protrusion.

[0069] In some embodiments, the limit block 13 has a guiding portion 131, and at the same time, the bottom wall of the limit block 13 has a protrusion 132 or the limit block 13 has rollers 133 on both sides along the length direction perpendicular to the lower slide rail 11; in some embodiments, the limit block 13 does not have a guiding portion 131, but the bottom wall of the limit block 13 has a protrusion 132 or the limit block 13 has rollers 133 on both sides along the length direction perpendicular to the lower slide rail 11.

[0070] The bottom surface of the limit block 13 can be a flat surface or a curved surface.

[0071] In an embodiment where the bottom surface of the limit block 13 is a flat surface, protrusions 132 are provided on the bottom wall of the limit block 13 in a uniform or non-uniform arrangement. The limit block 13 is supported by the protrusions 132 to be separated from the bottom wall of the lower slide rail 11 by a certain distance, so that when the limit block 13 slides in the lower slide rail 11, only the protrusions 132 are in contact with the bottom wall of the lower slide rail 11.

[0072] Such as Figure 6 and Figure 7As shown, the height of the limit block 13 in the first direction is less than the height of the upper slide rail 12 in the first direction;

[0073] The lower slide rail 11 has a limit arc 111 arranged in the first direction. The lower end of the limit arc 111 can abut against the top of the limit block 13 for limiting the limit block 13, so as to apply pressure to the limit block 13 to press the limit block 13 against the bottom wall of the lower slide rail 11, preventing the limit block 13 from jumping in the first direction and improving the sliding stability of the limit block 13 in the lower slide rail 11.

[0074] It should be noted here that the first direction is the direction perpendicular to the bottom wall of the lower slide rail 11.

[0075] The connection between the limit arc 111 and the lower slide rail 11 is integrally formed with the lower slide rail 11. As Figure 6 and Figure 7 shown, the lower slide rail 11 has an opening for the upper slide rail 12 to pass through, and the limit arc 111 is arranged from the opening to the bottom wall of the lower slide rail 11.

[0076] The number of limit blocks 13 arranged between two adjacent upper slide rails 12 is one. When setting one limit block 13 between two adjacent upper slide rails 12 can meet the anti-pinch requirement, one limit block 13 can be set between two adjacent upper slide rails 12.

[0077] In some embodiments, at least two limit blocks 13 can be arranged between two adjacent upper slide rails 12. By combining at least two limit blocks 13, the anti-pinch requirement between two adjacent upper slide rails 12 can be met. This embodiment can improve the flexibility of distance adjustment between two adjacent upper slide rails 12.

[0078] In the embodiment where two or more limit blocks 13 are arranged between two adjacent upper slide rails 12, the lengths of different limit blocks 13 can be equal or unequal. The anti-pinch requirement can be achieved by combining limit blocks 13 with different lengths, improving the flexibility of adjusting the minimum distance between two adjacent seats 2.

[0079] The upper slide rail 12, the lower slide rail 11 and the limit block 13 can be made of the same material or different materials. The upper slide rail 12, the lower slide rail 11 and the limit block 13 are preferably made of materials with high strength and small friction coefficient.

[0080] In order to reduce the noise generated by the mutual collision between the upper slide rail 12 and the limit block 13 when moving in the lower slide rail 11, the noise generated by the collision can be reduced by selecting the materials of the upper slide rail 12 and the limit block 13, or anti-collision pads can be arranged on the end faces of the upper slide rail 12 and the limit block 13 to reduce the noise generated by the collision.

[0081] The dimension of the limiting block 13 in the direction perpendicular to the plane where the opening is located is smaller than the dimension of the upper slide rail 12 in the direction perpendicular to the plane where the opening is located, preventing interference between the limiting block 13 and the seat 2.

[0082] The above description is only a preferred embodiment of the present application and an explanation of the applied technical principles, and is not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. The scope of the application involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above application concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. A multi-row common-rail seat, characterized in that, Comprising an orbit (1) and a seat (2), The orbit (1) includes a lower slide rail (11) and at least two upper slide rails (12), the upper slide rails (12) can slide along the lower slide rail (11), and the upper slide rails (12) are connected to the seat (2). It further includes a limit block (13) disposed in the lower slide rail (11), and the limit block (13) is disposed between any two adjacent upper slide rails (12) for limiting the minimum distance between two adjacent upper slide rails (12), and the limit block (13) can slide in the lower slide rail (11) under the push of the upper slide rail (12).

2. The multi-row common-rail seat according to claim 1, wherein The limit block (13) further has a guiding portion (131). The guiding portion (131) obliquely extends from the limit block (13) towards the corner (112), and the guiding portion (131) is in guiding cooperation with the corner (112) of the lower slide rail (11) to provide a supporting force to the lower slide rail (11) in a first direction and a second direction; Or, the guiding portion (131) has a first guiding portion arranged in the first direction and a second guiding portion arranged in the second direction, and the first guiding portion and the second guiding portion are in guiding cooperation with the inner wall of the lower slide rail (11) to provide a supporting force to the lower slide rail (11) in the first direction and the second direction; Wherein, the first direction is a direction perpendicular to the bottom wall of the lower slide rail (11), and the second direction is a direction perpendicular to the length direction of the lower slide rail (11).

3. The multi-row common-rail seat according to claim 1 or 2, characterized in that, The limit block (13) has a protrusion (132), and the protrusion (132) contacts the top wall or the bottom wall of the lower slide rail (11).

4. The multi-row common-rail seat according to claim 1 or 2, characterized in that, Rollers (133) are arranged on both sides of the limit block (13) along a direction perpendicular to the length direction of the lower slide rail (11), and the limit block (13) slides in the lower slide rail (11) through the rollers (133).

5. The multi-row common-rail seat according to claim 2, wherein The height of the limit block (13) in the first direction is less than the height of the upper slide rail (12) in the first direction.

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