Guide rail sealing structure

Abstract

The utility model relates to the technical field of sealing of cargo carrying areas of transportation vehicles, in particular to a guide rail sealing structure which comprises a guide rail assembly and a sliding groove in the guide rail assembly. The zipper assembly covers a groove opening of the sliding groove, and the roller shutter assembly drives the zipper head to move when moving, so that opening and closing sealing of the zipper assembly relative to the sliding groove are achieved, and'moving, namely opening and closing ', of the zipper assembly relative to the sliding groove is achieved; when the roller shutter is unfolded, the zipper head is separated from upper and lower zipper teeth, and the sliding groove is exposed for the chain to slide; the roller shutter operation is not influenced; when the roller shutter is recycled, the zipper head closes the upper zipper teeth and the lower zipper teeth, the upper dustproof cloth and the lower dustproof cloth completely cover the opening of the sliding groove, seamless sealing is formed, and rainwater, silt and other external pollutants are completely blocked outside the sliding groove.

Description

Technical Field

[0001] This utility model relates to the field of enclosing the cargo area of ​​transportation vehicles, and in particular to a dustproof electric roller shutter guide rail sealing structure. Background Technology

[0002] As a type of truck with a cargo bed, pickup trucks are increasingly in demand from consumers, especially for the functionality of the cargo bed area.

[0003] Traditional electric roller blinds for pickup trucks typically use a separate upper and lower frame design, assembled with bolts and welding to form a groove. The dust cover is usually directly fixed to the edges of the upper and lower frames, or secured with simple clips and screws, relying on a rigid connection to cover the groove opening. A single-layer sealing strip is used at the joint between the upper and lower frames, or the edge of the dust cover is directly used to block the groove opening, lacking a dynamic sealing mechanism. When the blind moves, the relative position of the dust cover and the groove opening is prone to shift, leading to seal failure. Furthermore, exposed connections and open chains connecting the roller blind slats are often exposed outside the groove, or the groove opening is not completely covered. External dust and sand can directly enter the guide rail through the joint gaps, mounting holes, or groove openings, significantly increasing the risk of dust intrusion, especially when the pickup truck is traveling on bumpy terrain. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a guide rail sealing structure for use in electric roller blinds, so as to solve the above problems.

[0005] The guide rail sealing structure includes a guide rail assembly, which includes an upper frame assembly, a lower frame assembly, and a slide groove located between them as a guide rail for the roller blind assembly; it also includes a zipper assembly, which includes an upper dustproof cloth with upper teeth, a lower dustproof cloth with lower teeth, and a zipper head. The zipper head is fixedly connected to the roller blind assembly. The upper dustproof cloth is fixed to the upper frame assembly, and the lower dustproof cloth is fixed to the lower frame assembly. When the roller blind assembly moves, it drives the zipper head to move, thereby realizing the opening and closing sealing of the zipper assembly relative to the slide groove.

[0006] The zipper assembly features a follow-up sealing system. The zipper head is rigidly connected to the roller blind assembly, and as the roller blind moves, the zipper head slides synchronously, achieving "movement-based opening and closing" of the zipper assembly relative to the slide rail. When the roller blind unfolds, the zipper head separates the upper and lower chain teeth, exposing the slide rail for chain sliding without affecting the operation of the roller blind. When the roller blind retracts, the zipper head closes the upper and lower chain teeth, and the upper and lower dustproof cloths completely cover the slide rail opening, forming a seamless seal. Rainwater, mud, and other external pollutants are completely blocked from the slide rail. The full-stroke sealing system, with the upper dustproof cloth fixed to the upper frame assembly and the lower dustproof cloth fixed to the lower frame assembly, forms a continuous sealing band along the length of the guide rail. Combined with the follow-up trajectory of the zipper head, this eliminates the sealing blind spots between the first section of the roller blind blade and the end of the guide rail, and between the end plate and the initial end of the guide rail, which are common in traditional structures. This is especially effective against splashing dust and oblique rainwater when the pickup truck is traveling at high speed or on bumpy roads.

[0007] Preferably, the roller blind assembly includes multiple roller blind slats, and the chain includes multiple chain links. The side of each roller blind slat is connected to a chain link via a connecting shaft, and the connecting shaft is fitted with a sleeve. The zipper head has a body with a through hole. The zipper head is installed on the sleeve through the through hole and is located between the roller blind slats and the chain links. The chain links are located in a groove, and the connecting shaft at the end of the roller blind slats extends into the groove and is connected to the chain links. The chain links can drive the roller blind assembly to move.

[0008] Each roller blind slat is rigidly connected to its corresponding chain link via an independent connecting shaft, forming a "one slat, one drive unit" transmission structure. This ensures uniform force distribution on the slats and avoids slat twisting or misalignment caused by traditional centralized drives. The chain link is located within a groove, directly driving the connecting shaft. This short transmission path ensures that the roller blind assembly moves smoothly and without wobbling or jamming at high speeds. The combined design of the sleeve and connecting shaft allows the zipper head to automatically adjust its angle during movement, stably opening and closing the zipper.

[0009] Preferably, the roller blind assembly has a first roller blind blade at the end in the unfolding direction. A zipper head is fixed on the first roller blind blade, and the zipper assembly is used to seal the groove between the first roller blind blade and the end of the guide rail assembly's travel. When the roller blind assembly moves in the unfolding direction, the first roller blind blade, as the leading part of the movement, causes the zipper head fixed on it to simultaneously open the zipper assembly, gradually exposing the groove for the chain to pass through. When moving in the reverse direction, the zipper assembly automatically closes according to the position of the zipper head. This design completely eliminates the risk of dust leakage at the end caused by blade movement in traditional structures.

[0010] Preferably, the roller blind assembly has an end plate at its end in the unfolding direction, with a zipper head fixed to the end plate. The zipper assembly is used to seal the groove between the end plate and the end of the guide rail assembly's travel. The roller blind assembly can also use the end plate as the first blade to enhance overall strength.

[0011] Preferably, the upper frame assembly includes an upper profile and an upper sealing strip fixed to the upper profile, with an upper dustproof cloth fixed to the upper sealing strip. The lower frame assembly includes a lower profile and a lower sealing strip fixed to the lower profile, with a lower dustproof cloth fixed to the lower sealing strip. The zipper head is installed on a sleeve through a through hole and is located between the upper and lower sealing strips. The zipper head is installed in a neutral position between the upper and lower sealing strips through the sleeve, and its movement trajectory completely coincides with the lip contour of the sealing strip. When the roller shutter assembly moves, the zipper head synchronously pushes open or closes the zipper teeth of the upper and lower dustproof cloths, ensuring that the lip of the sealing strip always fits against the side of the zipper head body, eliminating the side dust leakage gap caused by traditional edge installation.

[0012] Other beneficial effects of this invention are further detailed in the embodiments described in the specification. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of the electric roller shutter according to a specific embodiment of the present invention.

[0015] Figure 2 for Figure 1 Enlarged view of position A Figure 1 .

[0016] Figure 3 for Figure 1 Enlarged view of position A Figure 2 .

[0017] Figure 4 for Figure 1 A magnified view of the area at position A after removing a portion of the parts.

[0018] Figure 5 for Figure 1 Top view.

[0019] Figure 6 for Figure 5 AA view.

[0020] Figure 7 for Figure 6 A magnified view of position B.

[0021] Figure 8 This is a schematic diagram of the structure of a zipper in the prior art.

[0022] 10-Roller blind blade; 11-First guide rail assembly; 12-Second guide rail assembly; 13-Roller blind box; 14-End plate; 15-Upper frame assembly; 16-Lower frame assembly; 21-Upper dustproof cloth; 22-Lower dustproof cloth; 23-Zipper head; 24-Sleeve; 25-Connecting shaft; 26-Chain link; 27-Transmission block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0025] The electric roller blind for pickup trucks provided in this embodiment is suitable for the cargo loading area of ​​pickup trucks. It can effectively protect the items in the cargo box from the effects of weather factors such as sunlight and rain, while solving the problem of dust and mud easily entering the track grooves of traditional pickup truck roller blinds, causing the roller blind to slide poorly. The electric roller blind is mainly composed of guide rail assembly, roller blind assembly, electric drive unit, zipper assembly, and roller blind box 13.

[0026] Guide rail assembly

[0027] The guide rail assembly serves as the guide and support structure for the motorized roller blind, typically positioned above the side panel of the cargo loading area on a pickup truck. Figure 1 It includes two guide rail assemblies, namely the first guide rail assembly 11 and the second guide rail assembly 12, which are symmetrically arranged on both sides of the pickup truck cargo box. Figure 7 As can be seen from the cross-sectional view, each guide rail assembly includes an upper frame assembly 15, a lower frame assembly 16, and a groove located between the two.

[0028] The upper frame assembly 15 and the lower frame assembly 16 can be an integral structure, which has a profile body and a groove formed on the side of the profile body. When the upper frame assembly 15 and the lower frame assembly 16 of the guide rail assembly are an integral structure, the groove is directly formed on the side of the profile body. This structure has higher strength and rigidity, and can better withstand the weight of the roller blind assembly and the chain, as well as the friction during movement. Taking the first guide rail assembly 11 as an example, the side of its profile body is machined with a groove extending along the length of the pickup truck bed. This groove is used to accommodate the chain and realize the sliding guidance of the roller blind assembly. Of course, the upper frame assembly 15 and the lower frame assembly 16 can also be separate structures. The upper frame assembly 15 includes an upper profile and an upper sealing strip fixed to the upper profile, and the lower frame assembly 16 includes a lower profile and a lower sealing strip fixed to the lower profile. The upper sealing strip and the lower sealing strip are arranged opposite to each other, and the roller blind assembly can move between the upper sealing strip and the lower sealing strip. The upper and lower profiles are mounted on the side frame of the pickup truck bed using bolts or other fixing methods to ensure the stability of the guide rail assembly. Link 26 is located within a groove, and the connecting shaft 25 at the end of the roller blind slat 10 extends into the groove and connects to link 26. This structural design allows for a tighter fit between the chain and roller blind assembly and the guide rail assembly, further improving the overall performance of the electric roller blind.

[0029] Roller blind assembly

[0030] A roller shutter box 13 is installed at the top of one end of the pickup truck's cargo bed to house the roller shutter. The roller shutter assembly can be pulled out of or inserted into the roller shutter box 13 by an electric drive unit. When the roller shutter is closed, it is completely contained within the roller shutter box 13, keeping the cargo bed tidy. When the cargo bed needs to be opened, the electric drive unit pulls the roller shutter out of the roller shutter box 13 to cover the cargo bed opening. The roller shutter assembly is located between the first guide rail assembly 11 and the second guide rail assembly 12, enabling the opening and closing of the cargo bed.

[0031] The roller blind assembly can be a fabric structure housed in the roller blind box 13, or it can be like... Figure 1 The roller blind assembly includes multiple roller blind slats 10, which are arranged in sequence to form a roller blind structure that can be rolled up and unfolded.

[0032] by Figure 1 For example, an end plate 14 is provided at the first end of the roller blind assembly (i.e., the end away from the roller blind box 13). The end plate 14 is used to close the end of the roller blind assembly to ensure the integrity and stability of the roller blind assembly. Of course, only the first section of roller blind blade 10 can be provided without the end plate 14.

[0033] The sides of the roller blind assembly are fixedly connected to the chain. Specifically, the side of each roller blind slat 10 is connected to a link 26 of the chain via a connecting shaft 25. This one-to-one connection ensures that each roller blind slat 10 receives stable support from the chain, guaranteeing the flatness and stability of the roller blind assembly during movement. The connecting shaft 25 passes through the side of the roller blind slat 10 and engages with the connecting hole on the link 26, thus achieving a fixed connection between the roller blind slat 10 and the chain. A sleeve 24 is fitted over the connecting shaft 25, allowing the sleeve 24 to rotate on the connecting shaft 25, thereby enabling the zipper head 23 to operate relatively stably when the chain moves.

[0034] electric drive unit

[0035] The electric drive unit (not shown in the figure) is the power source for moving the roller blind assembly. It is installed at one end of the pickup truck bed, typically adjacent to the roller blind box 13. The electric drive unit includes a motor, gear transmission mechanism, and other components. The motor meshes with the chain through the gear transmission mechanism. A transmission block 27 is provided on the chain link 26. The gear of the electric drive unit engages with the transmission block 27, driving the chain link 26 to move by driving the transmission block 27. When the motor starts, the gear rotates, causing the chain to move linearly along the slide groove of the guide rail assembly, thereby realizing the unfolding or retraction of the roller blind assembly. This embodiment directly uses a commercially available electric drive unit without modifying the structure.

[0036] Dustproof zipper structure

[0037] The dustproof zipper structure is the core innovation of this utility model. It can effectively seal the slide groove of the guide rail assembly, preventing external dust, mud and other particles from entering, thereby ensuring the smooth sliding of the roller shutter assembly and extending the service life of the roller shutter.

[0038] The zipper assembly includes an upper dust cover 21 with upper teeth, a lower dust cover 22 with lower teeth, and a zipper head 23. The upper teeth are positioned along the lower edge of the upper dust cover 21, and the lower teeth are positioned along the upper edge of the lower dust cover 22. The zipper head 23 forms a zipper engagement structure with the upper and lower teeth, meaning that the zipper head 23 can slide on the upper and lower teeth to open and close the zipper.

[0039] The upper dustproof cloth 21 is fixed to the upper frame assembly 15. Preferably, when the upper frame assembly 15 of the guide rail assembly is a split structure, the upper dustproof cloth 21 is fixed to the upper sealing strip, which is fixed to the upper profile by glue or bolts, etc., to ensure the stable installation of the upper dustproof cloth 21. The upper dustproof cloth 21 extends along the length of the upper frame assembly 15, and the upper chain teeth at its edge are located at the opening of the slide groove.

[0040] The lower dustproof cloth 22 is fixed to the lower frame assembly 16. Similarly, when the lower frame assembly 16 of the guide rail assembly is a split structure, the lower dustproof cloth 22 is fixed to the lower sealing strip, and the lower sealing strip is fixed to the lower profile. The lower dustproof cloth 22 also extends along the length of the lower frame assembly 16, and the lower chain teeth at its edge are located at the opening of the slide groove.

[0041] The zipper head 23 is fixedly connected to the roller blind assembly. The fixing method can be welding, bolting, etc., as long as the zipper head 23 moves synchronously with the roller blind assembly. In a preferred embodiment, the zipper head 23 is fixed to the sleeve 24 and located between the roller blind assembly and the chain. Since the sleeve 24 is fitted onto the connecting shaft 25, and the connecting shaft 25 is connected to the roller blind slats 10 and the chain link 26, the zipper head 23 can move synchronously with the movement of the roller blind assembly.

[0042] See Figure 7 Taking the first guide rail assembly 11 as an example, in the cross-sectional direction of the guide rail assembly, the upper frame assembly 15 is located above the slide groove, and the lower frame assembly 16 is located below the slide groove. The upper chain teeth of the upper dustproof cloth 21 and the lower chain teeth of the lower dustproof cloth 22 are located on the upper and lower sides of the slide groove opening, respectively. The zipper head 23 is located on the side of the slide groove, adjacent to the side of the roller blind assembly, and is installed on the connecting shaft 25 through the sleeve 24, positioned between the roller blind blade 10 and the chain link 26. This positioning allows the zipper head 23 to move synchronously along the slide groove opening when the roller blind assembly moves, realizing the engagement and disengagement of the upper and lower chain teeth.

[0043] When the zipper head 23 is fixed on the first section of the roller blind assembly, the zipper assembly is used to seal the groove between the first section of the roller blind slat and the end of the guide rail assembly's travel. When the roller blind assembly is fully extended, the first section of the roller blind slat reaches the end of the guide rail assembly's travel. At this time, the zipper head 23 is located at the opening of the groove at the end of the guide rail assembly's travel. At this time, the zipper is fully open. When the roller blind assembly is received into the roller blind box 13, the first section of the roller blind slat moves towards the roller blind box 13, and the groove between the first section of the roller blind slat and the end of the guide rail assembly's travel no longer accommodates the roller blind assembly. Under the action of the zipper head 23, the upper dustproof cloth 21 and the lower dustproof cloth 22 are closed, which can effectively seal the gap between the first section of the roller blind slat and the end of the guide rail assembly, preventing dust from entering.

[0044] The roller blind assembly can use an end plate 14. When the zipper head 23 is fixed on the end plate 14, the zipper assembly is used to seal the groove between the end plate 14 and the end of the guide rail assembly's travel. As the end sealing component of the roller blind assembly, the gap between the end plate 14 and the end of the guide rail assembly's travel can easily become a channel for dust to enter. By fixing the zipper head 23 to the end plate 14, the zipper assembly can seal this gap when the roller blind assembly moves, improving the dustproof effect.

[0045] Detailed instructions for use

[0046] When the electric roller shutter of the pickup truck bed needs to be pulled out, the user activates the electric drive unit via a control switch. The motor of the electric drive unit starts to rotate, driving the transmission block 27 on the chain to move through the gear transmission mechanism, which in turn drives the chain to move along the slide of the guide rail assembly away from the roller shutter box 13.

[0047] As the chain moves, the roller shutter blades 10 of the roller shutter assembly unfold sequentially via the connecting shaft 25 and the sleeve 24. Since the zipper head 23 is fixed to the sleeve 24, it moves synchronously in the unfolding direction along with the chain and roller shutter assembly. During this movement, the zipper head 23 separates the upper chain teeth of the upper dustproof cloth 21 and the lower chain teeth of the lower dustproof cloth 22, putting the zipper assembly in an open state, exposing the opening of the slide groove, allowing the chain and roller shutter assembly to slide freely within the slide groove.

[0048] When the roller shutter assembly is fully extended, the roller shutter blades 10 cover the entire cargo box opening. At this time, the zipper head 23 is located at the end of the travel of the guide rail assembly. The gap between the first section of the roller shutter blade or end plate 14 and the end of the guide rail assembly is exposed through the open state of the zipper assembly, which meets the requirement that the cargo box opening is fully open.

[0049] When the electric roller blind needs to be closed, the electric drive unit runs in reverse, and the motor drives the gear transmission mechanism to move the chain closer to the roller blind box 13. The chain drives the roller blind slats 10 of the roller blind assembly to retract into the roller blind box 13 in sequence, and at the same time, the zipper head 23 also moves in the opposite direction along with the chain and the roller blind assembly.

[0050] During the reverse movement, the zipper head 23 gradually engages the upper and lower zipper teeth. As the zipper head 23 moves, the upper dustproof cloth 21 and the lower dustproof cloth 22 gradually cover the opening of the slide groove. When the roller shutter assembly is completely housed within the roller shutter box 13, the zipper head 23 moves to its initial position, the zipper assembly is fully closed, and the upper dustproof cloth 21 and the lower dustproof cloth 22 fit tightly together, completely sealing the opening of the slide groove and effectively preventing external dust, mud, and other particles from entering the slide groove.

[0051] Throughout the operation, the electric drive unit precisely controls the rotation direction and speed of the motor to achieve precise control over the movement speed and position of the roller blind assembly. The zipper assembly, roller blind assembly, and chain are mechanically connected to achieve synchronized movement, ensuring that the slide opening is exposed when the roller blind is open and sealed when it is closed. This effectively solves the dust prevention problem of traditional pickup truck roller blinds without affecting their normal use.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A guide rail sealing structure, comprising a guide rail assembly, the guide rail assembly including an upper frame assembly (15) and a lower frame assembly (16) and a groove located between the two as a guide rail for the roller shutter assembly; Its features are, It also includes a zipper assembly, including an upper dustproof cloth (21) with upper chain teeth, a lower dustproof cloth (22) with lower chain teeth, and a zipper head (23). The zipper head (23) is fixedly connected to the roller blind assembly. The upper dustproof cloth (21) is fixed on the upper frame assembly (15), and the lower dustproof cloth (22) is fixed on the lower frame assembly (16). When the roller blind assembly moves, it drives the zipper head (23) to move, thereby realizing the opening and closing of the zipper assembly relative to the slide groove.

2. The guide rail sealing structure according to claim 1, characterized in that, The roller blind assembly includes multiple roller blind slats, and the chain includes multiple chain links. The side of each roller blind slat is connected to a chain link via a connecting shaft, and the connecting shaft is fitted with a sleeve. The zipper head has a body with a through hole. The zipper head is installed on the sleeve through the through hole and is located between the roller blind slats and the chain links. The chain links are located in a slide groove. The connecting shaft at the end of the roller blind slats extends into the slide groove and is connected to the chain links. The chain links can drive the roller blind assembly to move.

3. The guide rail sealing structure according to claim 2, characterized in that, The roller blind assembly has a first section of roller blind blades at the end in the unfolding direction. A zipper head (23) is fixed on the first section of roller blind blades. The zipper assembly is used to seal the groove between the first section of roller blind blades and the end of the guide rail assembly's stroke.

4. The guide rail sealing structure according to claim 2, characterized in that, The roller blind assembly has an end plate (14) at the end in the unfolding direction, and a zipper head (23) is fixed on the end plate (14). The zipper assembly is used to seal the groove between the end plate and the end of the guide rail assembly.

5. The guide rail sealing structure according to claim 1, characterized in that, The upper frame assembly (15) includes an upper profile and an upper sealing strip fixed to the upper profile. An upper dustproof cloth (21) is fixed to the upper sealing strip. The lower frame assembly (16) includes a lower profile and a lower sealing strip fixed to the lower profile. A lower dustproof cloth (22) is fixed to the lower sealing strip. The zipper head is installed on the sleeve through a through hole and is located between the upper sealing strip and the lower sealing strip.

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