Towable sunshade assembly

Abstract

The utility model discloses a traction type sunshade assembly, including curtain cloth subassembly, still include, track group is constituted by two opposite setting track, sliding bar, including first sliding bar and a plurality of secondary sliding bars, the both ends of sliding bar are placed on track, adjacent sliding bar is connected through curtain cloth subassembly, connecting piece, be located on secondary sliding bar, when adjacent sliding bar is close through connecting piece and make two close, stirring member, be located on first sliding bar, to stirring member exert push or pull, make curtain cloth subassembly fold or unfold. Install between adjacent house beam, through setting track to ensure smoothness, set up magnetic attraction piece to prevent the whole in the state of inclination and slide, simultaneously utilize the mode of traction and make the disengagement or adsorption between sliding bar.

Description

Technical Field

[0001] This utility model relates to the field of sunrooms, and in particular to a traction-type sunshade component. Background Technology

[0002] A sunroom uses transparent materials to bring sunlight and views indoors, providing residents with a comfortable space that feels both indoors and outdoors. Essentially, it uses architectural design to meet people's needs for "sunlight, nature, and relaxation," and is an important expression of the pursuit of nature and style in modern homes.

[0003] Conventional sunrooms typically have a sloping roof, consisting of several parallel beams arranged at the angle of inclination. Glass or transparent acrylic panels are placed between adjacent beams to allow sunlight to enter. However, prolonged direct sunlight can exacerbate the increase in indoor temperature, or partial shading may be required depending on the user's needs. Therefore, it is necessary to design a track-type sunshade for the glass area between adjacent beams. At the same time, due to the sloping roof design, it is also necessary to have an anti-slip function. Summary of the Invention

[0004] Based on this, this application provides a traction-type sunshade component to solve the above-mentioned technical problems.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a traction-type sunshade assembly, including a curtain assembly, and further including a track group composed of two opposing tracks; a sliding rod, including a first sliding rod and several secondary sliding rods, the two ends of the sliding rods being placed on the tracks, and adjacent sliding rods being connected through the curtain assembly; a connecting member, provided on the secondary sliding rods, which makes adjacent sliding rods fit together tightly when they are close to each other; and an actuating member, provided on the first sliding rod, which applies a pushing or pulling force to the actuating member to fold or unfold the curtain assembly.

[0006] In the above technical solution, the track is further shaped like an "L" and forms a main base with a horizontal segment and a vertical segment; an arc segment with its two ends abutting the horizontal segment and the vertical segment respectively; and a first edging with one end tangent to the vertical segment and its opening opposite to the horizontal segment. The second edge is connected to the other end of the first edge; the first edge, the second edge, and the arc segment cooperate to form a partial arc-shaped inner cavity.

[0007] In the above technical solution, both the first slide bar and the second slide bar are composed of a main rod and main rod slide seats located at both ends of the main rod; the main rod slide seat is composed of a sliding part and a plug-in part, the sliding part cooperates with the track, and the plug-in part is embedded in the main rod.

[0008] In the above technical solution, further, the sliding portion is generally in a 匚-like shape as a whole, and is composed of a bottom edge, a first connecting edge and a top edge; an end portion of the top edge is provided with a second connecting edge that is parallel to the first connecting edge and shorter than the first connecting edge, so that the sliding portion is in an unclosed state; the inserting portion is disposed on the first connecting edge of the sliding portion, on the side opposite to the opening, and is generally in an "I" shape as a whole.

[0009] In the above technical solution, further, the curtain fabric assembly is composed of a curtain fabric and a hook and loop fastener, and the hook and loop fastener comprises a hook surface patch and a loop surface patch; if the hook surface patch is disposed on the slide bar, the loop surface patch is disposed on the curtain fabric; if the loop surface patch is disposed on the slide bar, the hook surface patch is disposed on the curtain fabric; the curtain fabric is detachably disposed on the slide bar through the hook and loop fastener.

[0010] In the above technical solution, further, the connecting member is a magnet, which is disposed in the middle of the main rod and located on the direction surface along which the main rod moves.

[0011] In the above technical solution, further, the toggle member is disposed in the middle of the main rod and located on the direction surface along which the main rod moves; the toggle member is composed of a first flat plate, a second flat plate and a transition plate for connecting the first flat plate and the second flat plate, the first flat plate and the second flat plate are parallel to each other, and two ends of the transition plate are respectively tangent to the first flat plate and the second flat plate; a through slot is provided at the middle-lower part of the transition plate and partially on the second flat plate.

[0012] In the above technical solution, further, the rail is of a spliced type, and rail seats are provided at the head end, the tail end and splicing positions of the rail; the rail seat is generally L-shaped, comprising a longitudinal edge and a transverse edge, the transverse edge abuts against the horizontal section of the rail, an end of the transverse edge is provided with an arc hook inserted into the arc inner cavity, and an outer side surface of the longitudinal edge is flush with the edge of the horizontal section.

[0013] In the above technical solution, further, the vertical section of the rail is disposed in the sliding portion, the second connecting edge on the sliding portion abuts against the second wrapping edge, and an end head is further provided at an end of the second wrapping edge.

[0014] In the above technical solution, further, through holes are provided at two ends of the horizontal section of the rail, and a screw is provided to pass through the rail from bottom to top and screw into the rail seat; limiting blocks are provided at two ends of the secondary slide rod at the tail end to lock the position of the tail secondary slide rod on the rail; a notch is provided on the limiting block, the bottom edge is disposed in the notch, and a screw is provided to sequentially penetrate through the limiting block, the rail and the rail seat from bottom to top, so as to realize fixation among the three.

[0015] The beneficial effects of this utility model are: when installed between adjacent beams, a track is set to ensure smoothness, a magnetic suction device is set to prevent the whole structure from sliding down in an inclined state, and a traction method is used to separate or attract the sliding rods. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a perspective view of the product to which this utility model is applied.

[0018] Figure 2 This is an unfolded diagram of the sunshade component of this utility model.

[0019] Figure 3 This is a diagram of the sunshade component storage of this utility model.

[0020] Figure 4 This is an enlarged view of the track assembly state of this utility model.

[0021] Figure 5 This is an exploded perspective view of the curtain assembly of this utility model.

[0022] Figure 6 This is a front view of the curtain assembly of this utility model.

[0023] Figure 7 This is an exploded view of the slide bar of this utility model.

[0024] Figure 8 This is a perspective view of the first embodiment of the connector of this utility model.

[0025] Figure 9 This is a perspective view of the second embodiment of the connector of this utility model.

[0026] Figure 10 This is a perspective view of the third embodiment of the connector of this utility model.

[0027] Figure 11 This is an exploded view of the track, main rod slide, and track seat of this utility model.

[0028] Figure 12 This is a schematic diagram of the installation of the track and track seat of this utility model.

[0029] Figure 13 This is a diagram showing the fit between the limiting block and the main rod slide of this utility model.

[0030] Figure 14 This is a first-person perspective perspective view of the main rod slide of this utility model.

[0031] Figure 15 This is a second-view perspective perspective view of the main rod slide of this utility model.

[0032] Figure 16 This is a perspective view of the toggle component of this utility model.

[0033] Figure 17 This is a front view of the lever and lever assembly of this utility model.

[0034] In the diagram, 1. Track; 101. Horizontal section; 102. Vertical section; 103. Arc-shaped section; 104. First edging; 105. Second edging; 106. Arc-shaped inner cavity; 107. End; 2. Slide rod; 2-1. First slide rod; 2-2. Second slide rod; 21. Main rod; 22. Main rod slide block; 221. Sliding part; 2211. Bottom edge; 2212. First connecting edge; 2213. Top edge; 2214. Second connecting edge; 222. Insertion part; 3. Curtain assembly; 31. Curtain; 32. Velcro; 321. Hook-face sticker; 322. Fleece-face sticker; 4. Connector; 5. Actuator; 51. First plate; 52. Second plate; 53. Transition plate; 54. Through groove; 6. Track seat; 61. Longitudinal edge; 62. Transverse edge; 63. Arc hook; 7. Limiting block; 71. Notch. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection of this application.

[0036] Reference Figure 1-17 As shown, the traction-type sunshade assembly includes a curtain assembly 3, a track group consisting of two opposing tracks 1; a sliding rod 2, including a first sliding rod 2-1 and several secondary sliding rods 2-2, with both ends of the sliding rod 2 placed on the track 1, and adjacent sliding rods 2 connected by the curtain assembly 3; a connecting member 4, disposed on the secondary sliding rods 2-2, which brings adjacent sliding rods 2 close together; and an actuating member 5, disposed on the first sliding rod 2-1, which applies a pushing or pulling force to the actuating member 5 to fold or unfold the curtain assembly 3.

[0037] For reference Figure 2-3 As shown, the two sets of orbits 1 are symmetrical. Specifically, the orbits 1 are L-shaped. Figure 10It can be seen that the rail 1 forms a main base composed of a horizontal section 101 and a vertical section 102, an arc-shaped section 103 is provided at the vertical included angle between the horizontal section 101 and the vertical section 102, two ends of the arc-shaped section 103 are tangent to the horizontal section 101 and the vertical section 102 respectively, and the tangent positions are located in the central area of the horizontal section 101 and the vertical section 102; meanwhile, a first wrapping edge 104 is connected to the upper end of the vertical section 102, the first wrapping edge 104 is substantially semicircular, one end of the first wrapping edge 104 is tangent to the vertical section 102, and the opening thereof faces the horizontal section 101; a second wrapping edge 105 connected to the first wrapping edge 104 is provided at the other end of the first wrapping edge 104, and an arc-shaped inner cavity 106 is internally formed by the arc-shaped section 103, the first wrapping edge 104 and the second wrapping edge 105.

[0038] Specifically, both the first sliding rod 2-1 and the second sliding rod 2-2 are composed of a main rod 21 and main rod sliding seats 22 located on both sides of the main rod 21, the main rod 21 is a strip-shaped hollow rectangular frame, the main rod sliding seats 22 on both sides are symmetrical to each other with the central cross-section of the main rod as a symmetry plane, the main rod sliding seat 22 is composed of a sliding part 221 and an inserting part 222, the inserting part 222 is embedded into the end of the main rod 21, the sliding part 221 is arranged outside the main rod 21, and the sliding part 221 is buckled on the rail 1.

[0039] Specifically, the sliding part 221 is substantially in a U-shape, composed of a bottom edge 2211, a first connecting edge 2212 and a top edge 2213, and further comprises a second connecting edge 2214 arranged at the end of the top edge 2213 and parallel to the first connecting edge 2212, the second connecting edge 2214 is shorter than the first connecting edge 2212, and the length thereof is approximately one third of that of the first connecting edge 2212, the sliding part 221 is in an unclosed state, as Figure 11 is a cooperation diagram of the sliding part 221 and the rail 1, the outer top surface of the first wrapping edge 104 abuts against the inner wall of the top edge 2213 of the sliding part 221, and the second wrapping edge 105 abuts against the inner wall of the second connecting edge 2214.

[0040] it should be noted that, as Figure 13-14 is shown, the outer wall of the first connecting edge 2212 of the sliding part 221 is a flat surface, the inserting part 222 is arranged on the flat surface of the outer wall of the first connecting edge 2212 of the sliding part 221, the inserting part 222 is I-shaped, and the inserting part 222 can be fixed on the sliding part 221 by welding.

[0041] To ensure the linkage and detachability of the curtain assembly 3, the curtain assembly 3 includes a curtain 31 and hook and loop fasteners 32. Specifically, the hook and loop fasteners 32 include a hook-on side 321 and a loop-on side 322. The mounting points of the hook-on side 321 and the loop-on side 322 are not limited. If the hook-on side 321 is set on the slide rod 2, then the loop-on side 322 is set on the curtain 31. If the loop-on side 322 is set on the slide rod 2, then the hook-on side 321 is set on the curtain 31. Preferably, the hook-on side 321 is set on the slide rod 2 and the loop-on side 322 is set on the curtain 31. This arrangement is to ensure that the hook-on side will not be damaged when the curtain 31 is cleaned in the future.

[0042] Specifically, the hook-face patch 321 is disposed on the main rod 21 and the main rod slide 22, and the fleece-face patch 322 is disposed on the surface of the curtain fabric 31, such as... Figure 5-6 As shown, both the hook-face sticker 321 and the napped-face sticker 322 have adhesive backing. During installation, the hook-face sticker 321 is first attached to the bottom of the main rod 21 and the main rod slide 22. Screws are provided at both ends and the middle of the hook-face sticker 321. The screws at both ends pass through the hook-face sticker 321 from bottom to top and are screwed into the bottom edge 2211 of the sliding part 221. The screw in the middle is screwed into the main rod 21. The napped-face sticker 322 is attached to the curtain 31 for positioning and the two are fastened by sewing. The curtain 31 is detached and mounted on the slide rod 2 by the Velcro 32.

[0043] The connector 4 is a magnet, which is located in the middle of the main rod 2 of the secondary slide bar 2-2 and is in the direction of movement of the main rod 21. The magnet can be fixed to the main rod in a variety of ways.

[0044] The first embodiment, as Figure 8 As shown, the back of the magnet is provided with adhesive, and the main rod 21 is made of a metal profile that can be attracted. The magnet is fixed to the main rod 21 by attraction force and adhesive force.

[0045] The second embodiment, as follows Figure 9 As shown, the magnet is installed inside a strip plate, with a central area for storing the magnet. The magnet is fixed in this area, and screws are provided on both sides of the strip plate and screwed into the main rod 21 for further tightening.

[0046] The third embodiment, such as Figure 10 As shown, a bowl is provided to accommodate a ring magnet. The bottom of the bowl is provided with a through hole. A screw passes through the magnet and the bowl and is screwed into the main rod 21.

[0047] Furthermore, in order to fix the first slide bar 2-1 in the unfolded state, two connecting pieces 4 are provided on the frame at the opposite positions of the actuating piece 5 on the first slide bar 2-1. When fully unfolded, the magnet attracts the actuating piece 5 to ensure that the first slide bar 2-1 cannot be easily pushed and stored.

[0048] Furthermore, the connector 4 is not limited to the magnet, and the two sets of slide rods 2 can be connected by mechanical connection structures such as Velcro and buckles.

[0049] Similarly, the actuating element 5 is disposed at the middle of the main rod 21 of the first sliding rod 2-1 and is located on the direction in which the main rod 21 moves, as shown in the example below. Figure 16 As shown, the actuating member 5 is composed of a first plate 51, a second plate 52, and a transition plate 53 for connecting the first plate 51 and the second plate 52. The first plate 51 and the second plate 52 are offset and parallel. The two ends of the transition plate 53 are tangent to the first plate 51 and the second plate 52. At the same time, a through groove 54 is provided in the lower part of the first transition plate 53 and part of the second plate 52. The lateral width of the through groove 54 is smaller than the lateral width of the first plate 51 / second plate 52 / transition plate 53.

[0050] It should be noted that the first plate 51 is fixed on the main rod 21, and the second plate 52 and the transition plate 53 are both located below the horizontal plane where the lower surface of the main rod 21 is located.

[0051] Further, a lever is needed to apply a pulling or pushing force to the actuating element 5, such as... Figure 17 As shown, the tip of the lever is configured as a vertically oriented hook. In use, the hook of the hook is hooked into the through groove 54. When pulled, the hook is located behind the lever 5 and is opened by walking. When pushed, the hook is located in front of the lever 5 and is closed by walking.

[0052] It should be noted that, as Figure 17 As shown, the second plate 52 is positioned rearward relative to the first plate 51. This arrangement is intended to provide a space for the rod head of the actuating rod at the front end of the actuating member 5 when the curtain assembly 3 is fully unfolded, facilitating the actuating rod to push the actuating member 5.

[0053] For ease of transportation and packaging, the track 1 needs to be a spliced ​​track 1. Because the track 1 has an arc-shaped inner cavity 106, deformation can easily lead to poor alignment at the joint. During installation, to avoid unevenness at the connection between two sections of the track 1, which would affect the sliding effect, track seats 6 are provided at the beginning, end, and joint of the entire spliced ​​track 1. The track seats 6 at both ends are for support, and the track seats 6 at the joint are to ensure a flush joint. Specifically, the track seats 6 are L-shaped and include a longitudinal side 61 and a transverse side 62, as shown below. Figure 12 As shown, after installation, the track seat 6 has its lateral side 62 abutting against the horizontal section 101 of the track 1. The end of the lateral side 62 is provided with an arc hook 63 that inserts into the arc-shaped inner cavity 106. The outer side of the longitudinal side 61 is flush with the edge of the horizontal section 101. The back of the longitudinal side 61 is used to abut against the side of the roof beam. When installing the track seat 6, the track seat 6 is tilted, and the arc hook 63 of the track seat 6 is aligned with the arc-shaped inner cavity 106 to completely install the track seat 6 onto the track 1. When installing the slide rod 2, it is installed on the track 1 by sliding it in from one end of the track 1.

[0054] When the sliding part 221 is engaged with the track 1, the distance between the inner wall of the top edge 2213 and the inner wall of the bottom edge 2211 of the sliding part 221 is slightly greater than the distance between the second edge 105 and the horizontal section 101 of the track 1. The vertical section 102 of the track 1 is partially placed inside the sliding part 221. The second edge 105 on the track 1 is attached to the inner wall of the second connecting edge 2214 of the sliding part 221. Furthermore, in order to restrict the second connecting edge 2214 and prevent the sliding part 221 from detaching, an end 107 is also provided at the end of the second edge 105.

[0055] It should be noted that since the track 1 is segmented and the track seat 6 is installed at the splicing point, through holes need to be provided at both ends of the horizontal segment 101 of the track 1, and two screws need to be provided, passing through the track 1 from bottom to top and screwed into the track seat 6.

[0056] Furthermore, the inclined sunshade assembly requires that the sliding rod 2 at its tail end be fixed to the track 1, providing a fixing point for all sliding rods 2. Specifically, as shown... Figure 13As shown, limit blocks 7 are provided at both ends of the slide rod 2 at the tail end. A notch 71 is provided on the limit block 7. The bottom edge 2211 of the sliding part 221 is placed in the notch 71. At the same time, a screw is provided from below the limit block 7, passing through the limit block 7, the track, and the track seat 6 in sequence to fix the three. Therefore, the position of the slide rod at the tail end on the track is locked.

[0057] The working process of this utility model is as follows: When installing the concealing component, firstly, the main rod slide block 22 is inserted into both ends of the main rod 21, and the segmented track 1 is pre-assembled. Then, the track seat 6 is installed at both ends and the splicing points of the entire track 1 and tightened with screws. The slide rod 2 is slid into the track 1 from one end of the track 1. During installation, the connecting piece 4 ensures that all slide rods 2 can be spliced ​​together. The actuating piece 5 is pulled by the actuating rod to disengage each slide rod 2, finally forming an unfolded state.

[0058] The various embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0059] Finally, it should be noted that the above description is only a preferred embodiment of this application. The foregoing embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A traction-type sunshade assembly, characterized in that, comprising a curtain fabric assembly (3), further comprising: a track set, formed by two oppositely arranged tracks (1); slide bars (2), comprising a first slide bar (2-1) and a plurality of secondary slide bars (2-2), both ends of the slide bars (2) are disposed on the tracks (1), and adjacent slide bars (2) are connected to each other via the curtain fabric assembly (3); a connecting member (4), disposed on the secondary slide bar (2-2), when adjacent slide bars (2) approach each other, the two slide bars are brought into close contact with each other via the connecting member (4); a shifting member (5), disposed on the first slide bar (2-1), wherein a pushing force or a pulling force is applied to the shifting member (5) to fold or unfold the curtain fabric assembly (3).

2. The traction-type sunshade assembly according to claim 1, characterized in that, the track is generally L-shaped, and a horizontal section (101) and a vertical section (102) form a main base; an arc-shaped section (103), two ends of which are respectively abutted against the horizontal section (101) and the vertical section (102); a first wrapping edge (104), one end of which is tangent to the vertical section (102), and an opening of the first wrapping edge faces the horizontal section (101); a second wrapping edge (105), connected to the other end of the first wrapping edge (104); the first wrapping edge (104), the second wrapping edge (105) and the arc-shaped section (103) cooperate to form a partial arc-shaped inner cavity (106).

3. The traction-type sunshade assembly according to claim 2, characterized in that, both the first slide bar (2-1) and the secondary slide bar (2-2) are formed by a main rod (21) and main rod sliding seats (22) located at two ends of the main rod (21); the main rod sliding seat (22) is formed by a sliding part (221) and an inserting part (222), the sliding part (221) is matched with the track (1), and the inserting part (222) is embedded into the main rod (21).

4. The traction-type sunshade assembly according to claim 3, characterized in that, the sliding part (221) is generally C-shaped, and is formed by a bottom edge (2211), a first connecting edge (2212) and a top edge (2213); an end portion of the top edge (2213) is provided with a second connecting edge (2214) parallel to the first connecting edge (2212) and shorter than the first connecting edge (2212), so that the sliding part (221) is in an unclosed state; the inserting part (222) is disposed on the first connecting edge (2212) of the sliding part (221) on an opposite side to the opening, and is generally I-shaped.

5. The traction-type sunshade assembly according to claim 1, characterized in that, the curtain fabric assembly (3) is formed by a curtain fabric (31) and a hook and loop fastener (32), the hook and loop fastener (32) comprises a hook surface patch (321) and a loop surface patch (322); if the hook surface patch (321) is disposed on the slide bar (2), then the loop surface patch (322) is disposed on the curtain fabric (31); if the loop surface patch (322) is disposed on the slide bar (2), then the hook surface patch (321) is disposed on the curtain fabric (31); the curtain fabric (31) is detachably disposed on the slide bar (2) via the hook and loop fastener (32).

6. The traction-type sunshade assembly according to claim 3, characterized in that, the connecting member (4) is disposed in a middle portion of the main rod (21) on a direction face along which the main rod (21) moves.

7. The traction-type sunshade assembly according to claim 3, characterized in that, the shifting member (5) is disposed in a middle portion of the main rod (21) on a direction face along which the main rod (21) moves; The actuating element (5) consists of a first plate (51), a second plate (52), and a transition plate (53) for connecting the first plate (51) and the second plate (52). The first plate (51) and the second plate (52) are parallel, and the two ends of the transition plate (53) are tangent to the first plate (51) and the second plate (52) respectively. A through groove (54) is provided in the lower part of the transition plate (53) and at part of the second flat plate (52).

8. The traction-type sunshade assembly according to claim 4, characterized in that, The track (1) is a splicing type, and track seats (6) are provided at the beginning, end and splicing points of the track (1); The track seat (6) is L-shaped and includes a longitudinal side (61) and a transverse side (62). The transverse side (62) is attached to the horizontal section (101) of the track (1). The end of the transverse side (62) is provided with an arc hook (63) that is inserted into the arc-shaped inner cavity (106). The outer surface of the longitudinal side (61) is flush with the edge of the horizontal section (101).

9. The traction-type sunshade assembly according to claim 4, characterized in that, The vertical segment (102) of the track (1) is placed inside the sliding part (221), and the second connecting edge (2214) on the sliding part (221) abuts against the second edging (105), and the end of the second edging (105) is also provided with an end (107).

10. The traction-type sunshade assembly according to claim 8, characterized in that, The horizontal section (101) of the track (1) has through holes at both ends, and a screw passes through the track from bottom to top and is screwed into the track seat (6); Limiting blocks (7) are provided at both ends of the secondary slide rod (2-2) at the tail end to lock the position of the secondary slide rod (2-2) on the track (1); The limiting block (7) has a notch (71), and the bottom edge (2211) is placed in the notch (71). A screw is provided to pass through the limiting block (7), the track (1), and the track seat (6) from bottom to top to fix the three together.

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