Electric roller shutter and pickup truck
By introducing a zipper assembly into the pickup roller shutter, the automatic opening and closing of the rolling shutter is solved, and the problem of dust entering the slide chute of the traditional pickup roller shutter is improved, the sliding smoothness and sealing of the rolling shutter is extended, and the service life is extended.
Patent Information
- Application Number
- CN202510754488.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-06
- Publication Date
- 2025-07-08
AI Technical Summary
The track chutes of traditional pickup truck roller shutters are prone to dust and sand, which leads to poor sliding of the roller shutter and poor sealing, which affects the service life and the protection of items in the car.
Zipper components are added to the traditional roller shutter structure, including the upper dustproof cloth, the lower dustproof cloth and the zipper head. The automatic opening and closing of the roller shutter is achieved through mechanical linkage, forming an intelligent protection mechanism to ensure that the slide chute is opened when the roller shutter is unfolded and sealed when closed.
It solves the problems of poor sliding and poor sealing of the roller shutter, improves the service life and dust protection effect of the roller shutter, and is especially suitable for long-term open-air parking or high-dust environments to protect the pickup truck cargo box.
Smart Images
Figure CN120270001A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of the closure of the cargo area of transportation vehicles, and particularly relates to a dust-proof electric rolling curtain and a pickup truck including the same. Background Art
[0002] As a truck with a cargo box area, the demand for pickup trucks by consumers is increasing day by day, especially the functional requirements for the cargo box area of pickup trucks.
[0003] The traditional pickup truck cargo box area is open and exposed to the air. In order to protect the items in the cargo box from the influence of weather factors such as sunlight and rain, a pickup truck rolling curtain is usually assembled on the cargo box.
[0004] When designing a pickup truck rolling curtain, it usually includes a track and a rolling curtain. A sliding groove for the rolling curtain to slide is provided on the track. As the rolling curtain is opened, the sliding groove part of its track will be exposed, and external dust, sediment and other particulate matters can easily enter the sliding groove of the track, resulting in poor sliding of the rolling curtain blades or even jamming, affecting the service life of the rolling curtain.
[0005] In addition, with the accumulation of particulate matters, the sealing performance of the track will become poor, resulting in dust, rainwater, etc. entering the carriage. Summary of the Invention
[0006] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an electric rolling curtain to solve the above problems.
[0007] The electric rolling curtain includes a guide rail assembly, the guide rail assembly includes an upper frame assembly, a lower frame assembly and a sliding groove located between the two; a rolling curtain assembly, the side of the rolling curtain assembly is fixedly connected to a chain, the chain is placed in the sliding groove of the guide rail assembly and can drive the rolling curtain assembly to move under the action of an electric drive unit; it also includes a zipper assembly, the zipper assembly includes an upper dust-proof cloth with upper chain teeth, a lower dust-proof cloth with lower chain teeth and a zipper head, and the upper chain teeth, the zipper head and the lower chain teeth form a zipper mating structure; wherein, the zipper head is fixedly connected to the rolling curtain assembly, the upper dust-proof cloth is fixed on the upper frame assembly, the lower dust-proof cloth is fixed on the lower frame assembly, and when the rolling curtain assembly moves, it drives the zipper head to move, so as to realize the opening and closing and sealing of the zipper assembly relative to the sliding groove.
[0008] The electric rolling curtain for pickup trucks provided by the present invention innovatively solves the technical contradiction of dust-proof sealing of the guide rail sliding groove and smooth sliding of the rolling curtain by adding a zipper assembly on the basis of the traditional rolling curtain structure. When the rolling curtain is unfolded, the zipper head automatically separates the upper and lower chain teeth, which does not affect the sliding of the chain; when the rolling curtain is retracted, the dust-proof cloth is synchronously closed to form an intelligent protection mechanism of "exposed when opened and sealed when closed". This mechanical linkage design avoids the disadvantages of the traditional sealing structure that requires additional driving, reduces the complexity of the control system, and improves the collaborative reliability of components.
[0009] Preferably, there are two guide rail assemblies, namely the first guide rail assembly and the second guide rail assembly. The rolling curtain assembly is located between the first guide rail assembly and the second guide rail assembly. The first and second guide rail assemblies form a stable guiding structure, and cooperate with the end plates to enclose both ends of the rolling curtain, so that the flatness error of the rolling curtain assembly during movement is less than 0.5 mm, effectively avoiding the jamming problem caused by shaking.
[0010] Preferably, the side of the rolling curtain assembly is connected to the chain through a connecting shaft, and a sleeve is sleeved outside the connecting shaft. The zipper head is fixed on the sleeve and is located between the rolling curtain assembly and the chain. The zipper head is connected to the rolling curtain assembly through the sleeve-connecting shaft structure, and the zipper head can be maintained in a relatively stable working position, ensuring that the opening and closing of the zipper are completely synchronized with the movement of the rolling curtain.
[0011] Preferably, the rolling curtain assembly includes a plurality of rolling curtain blades, and the chain includes a plurality of chain links. The side of each rolling curtain blade is connected to a chain link through a connecting shaft, and a sleeve is sleeved outside the connecting shaft. The zipper head is installed on the sleeve and is located between the rolling curtain blade and the chain link.
[0012] Preferably, the zipper head is fixed on the first rolling curtain blade of the rolling curtain assembly, and the zipper assembly is used to seal the chute between the first rolling curtain blade and the end of the stroke of the guide rail assembly; or, the zipper head is fixed on the end plate of the rolling curtain assembly, and the zipper assembly is used to seal the chute between the end plate and the end of the stroke of the guide rail assembly. When the zipper head is fixed to the first rolling curtain blade, the chute gap between the first rolling curtain blade and the end of the stroke of the guide rail assembly is the exposed area caused by the movement of the traditional rolling curtain blade, which is easily a channel for dust and rain to invade. Through the dynamic closing of the zipper assembly, the dust-proof efficiency of this area can be effectively improved, especially suitable for the protection of pickup truck cargo boxes parked outdoors for a long time or in high-dust environments. The first rolling curtain blade of the rolling curtain assembly can also be replaced with an end plate to strengthen the strength of the rolling curtain assembly at the end.
[0013] Preferably, the chain link is provided with a transmission block, and the electric drive unit drives the chain link to move through the transmission block. The rolling curtain blade is fixed on the transmission block, and the rolling curtain blade is directly fixed on the chain link, forming a rigid connection chain of "drive unit - transmission block - blade", reducing the lateral shaking amplitude of the blade during movement, and completely solving the jamming or noise problem caused by the shaking of the blade.
[0014] Preferably, the upper frame assembly includes an upper profile and an upper sealing strip fixed on the upper profile, an upper dust-proof cloth is fixed on the upper sealing strip, the lower frame assembly includes a lower profile and a lower sealing strip fixed on the lower profile, and a lower dust-proof cloth is fixed on the lower sealing strip. The upper sealing strip and the lower sealing strip are the installation carriers of the dust-proof cloth, and they have an elastic sealing function by themselves, which can fill the tiny gaps between the profile and the dust-proof cloth, and cooperate with the zipper sealing structure of the dust-proof cloth to form a triple sealing system of "rigid profile + flexible sealing strip + dust-proof cloth". It is significantly better than the traditional rigid connection method of directly fixing the dust-proof cloth.
[0015] Preferably, the upper frame component and the lower frame component are of an integral structure, which has a profile body. The sliding groove is formed on the side surface of the profile body, and the link is located in the sliding groove. The connecting shaft at the end of the rolling curtain blade extends into the sliding groove and is connected to the link. The profile body is integrally formed by aluminum alloy extrusion or steel die forging, eliminating the splicing gap of the traditional split structure. The overall tensile strength and the ability to resist bending deformation are significantly improved. When the pickup truck is driving at high speed or experiencing severe bumps, the deformation amount of the profile body remains within a small range, ensuring the dimensional stability of the sliding groove. The sliding groove is directly formed on the side surface of the profile body, and the link is completely accommodated inside the sliding groove. Compared with the exposed connection parts of the split structure, the risk of external impact and dust intrusion is further reduced.
[0016] The present invention also provides a pickup truck, which has a loading area where the aforementioned electric rolling curtain is used.
[0017] Other beneficial effects of the present invention are further detailed in the embodiments of the specification. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0019] Figure 1 It is a schematic diagram of the overall structure of the electric rolling curtain in the specific embodiment of the present invention.
[0020] Figure 2 For Figure 1 Partial enlarged view of position A Figure 1 .
[0021] Figure 3 For Figure 1 Partial enlarged view of position A Figure 2 .
[0022] Figure 4 For Figure 1 Partial enlarged view of position A after removing some parts.
[0023] Figure 5 For Figure 1 Top view.
[0024] Figure 6 For Figure 5 View in the direction of A-A.
[0025] Figure 7 For Figure 6Partial enlarged schematic view of position B.
[0026] Figure 8 It is a schematic structural diagram of a zipper in the prior art.
[0027] 10 - Roller shutter blade; 11 - First guide rail assembly; 12 - Second guide rail assembly; 13 - Roller shutter box; 14 - End plate; 15 - Upper frame assembly; 16 - Lower frame assembly; 21 - Upper dust-proof cloth; 22 - Lower dust-proof cloth; 23 - Zipper head; 24 - Sleeve; 25 - Connecting shaft; 26 - Link; 27 - Transmission block. Detailed implementation manners
[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.
[0029] In the description of the present application, it should be noted that the terms used here are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of each part shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as a part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.
[0030] The electric roller shutter for a pickup truck provided in this embodiment is applicable to the loading area of the pickup truck, can effectively protect the items in the cargo box from weather factors such as sunlight and rain, and at the same time solves the problem that the traditional pickup truck roller shutter track chute is prone to dust and sediment ingress, resulting in poor sliding of the roller shutter. The overall electric roller shutter mainly consists of a guide rail assembly, a roller shutter assembly, an electric drive unit, a zipper assembly, and a roller shutter box 13, etc.
[0031] Guide rail assembly The guide rail assembly is the guiding and supporting structure of the electric roller shutter, usually placed above the side plate of the loading area of the 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 at the two side edge positions of the pickup truck cargo box.Figure 7 As can be seen from the sectional view, each guide rail assembly includes an upper frame assembly 15, a lower frame assembly 16, and a chute located therebetween.
[0032] The upper frame assembly 15 and the lower frame assembly 16 may be an integral structure, which has a profile body, and the chute is 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 of an integral structure, the side of the profile body directly forms the chute. This structure has higher strength and rigidity and can better bear the weight of the rolling curtain assembly and the chain as well as the frictional force during movement. Taking the first guide rail assembly 11 as an example, the side of its profile body is processed with a chute extending along the length direction of the pickup truck cargo box, and this chute is used to accommodate the chain and realize the sliding guidance of the rolling curtain assembly; of course, the upper frame assembly 15 and the lower frame assembly 16 may also be a split structure. 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 oppositely, and the rolling curtain assembly can move through between the upper sealing strip and the lower sealing strip. The upper profile and the lower profile are installed on the side frame of the pickup truck cargo box by bolts or other fixing means to ensure the stability of the guide rail assembly. The chain link 26 is located in the chute, and the connecting shaft 25 at the end of the rolling curtain blade 10 extends into the chute and is connected to the chain link 26. This structural design makes the cooperation between the chain and the rolling curtain assembly and the guide rail assembly closer, further improving the overall performance of the electric rolling curtain. Rolling curtain assembly The rolling curtain box 13 is installed at the top of one end of the pickup truck cargo box for accommodating the rolling curtain. The rolling curtain assembly can be pulled out from the rolling curtain box 13 or sent into the rolling curtain box 13 for accommodation under the action of the electric drive unit. When the rolling curtain is in the closed state, the rolling curtain is completely accommodated in the rolling curtain box 13 to keep the cargo box clean; when the cargo box needs to be opened, the electric drive unit drives the rolling curtain to be pulled out from the rolling curtain box 13 to cover the cargo box opening. The rolling curtain assembly is located between the first guide rail assembly 11 and the second guide rail assembly 12 and can realize the opening and closing of the cargo box opening.
[0033] The rolling curtain assembly may be a cloth-like structure accommodated in the rolling curtain box 13, or may be like Figure 1 The rolling curtain assembly includes a plurality of rolling curtain blades 10, and these rolling curtain blades 10 are arranged in sequence to form a rolling and unfolding rolling curtain structure.
[0034] Taking Figure 1 as an example, at the head end of the rolling curtain assembly (i.e., the end far from the rolling curtain box 13), an end plate 14 is provided. The end plate 14 is used to close the end of the rolling curtain assembly to ensure the integrity and stability of the rolling curtain assembly. Of course, only the first section of the rolling curtain blade 10 may be provided without the end plate 14.
[0035] The side of the rolling curtain component is fixedly connected to the chain. Specifically, the side of each rolling curtain blade 10 is connected to a link 26 of the chain through a connecting shaft 25. The side of each rolling curtain blade 10 is connected to a link 26 through a connecting shaft 25. This one-to-one connection method enables each rolling curtain blade 10 to be stably supported by the chain, ensuring the flatness and stability of the rolling curtain component during movement. The connecting shaft 25 passes through the side of the rolling curtain blade 10 and mates with the connecting hole on the link 26 to achieve the fixed connection between the rolling curtain blade 10 and the chain. A sleeve 24 is sleeved outside the connecting shaft 25, and the sleeve 24 can rotate on the connecting shaft 25, so that when the chain moves, the zipper head 23 can work relatively stably. Electric drive unit The electric drive unit (not shown in the figure) is the power source for driving the movement of the rolling curtain component. It is installed at one end of the pickup truck cargo box and is usually arranged adjacent to the rolling curtain box 13. The electric drive unit includes components such as a motor and a gear transmission mechanism. The motor meshes with the chain through the gear transmission mechanism. A transmission block 27 is provided on the link 26, and the gear of the electric drive unit cooperates with the transmission block 27 to drive the link 26 to move by driving the transmission block 27. When the motor starts, the gear rotates, driving the chain to move linearly along the chute of the guide rail assembly, thereby realizing the unfolding or retraction of the rolling curtain component. In this embodiment, a commercially available electric drive unit is directly adopted without modifying the structure.
[0036] Dust-proof zipper structure The dust-proof zipper structure is the core innovative part of the present invention. It can effectively seal the chute of the guide rail assembly, prevent external dust, sediment and other particulate matters from entering, thereby ensuring the smooth sliding of the rolling curtain component and extending the service life of the rolling curtain. The zipper assembly includes an upper dust-proof cloth 21 with upper chain teeth, a lower dust-proof cloth 22 with lower chain teeth and a zipper head 23. The upper chain teeth are arranged along the lower edge of the upper dust-proof cloth 21, and the lower chain teeth are arranged along the upper edge of the lower dust-proof cloth 22. The zipper head 23 forms a zipper mating structure with the upper chain teeth and the lower chain teeth, that is, the zipper head 23 can slide on the upper chain teeth and the lower chain teeth to realize the opening and closing of the zipper. The upper dust-proof cloth 21 is fixed on the upper frame assembly 15. Preferably, when the upper frame assembly 15 of the guide rail assembly is a split structure, the upper dust-proof cloth 21 is fixed on the upper sealing strip, and the upper sealing strip is fixed on the upper profile by means of glue or bolts to ensure the stable installation of the upper dust-proof cloth 21. The upper dust-proof cloth 21 extends along the length direction of the upper frame assembly 15, and the upper chain teeth at its edge are located at the opening of the chute. The lower dust-proof cloth 22 is fixed to the lower frame assembly 16. Similarly, when the lower frame assembly 16 of the guide rail assembly is of a split structure, the lower dust-proof cloth 22 is fixed to the lower sealing strip, and the lower sealing strip is fixed to the lower profile. The lower dust-proof cloth 22 also extends along the length direction of the lower frame assembly 16, and the lower chain teeth at its edge are located at the opening of the chute.
[0037] The zipper head 23 is fixedly connected to the rolling curtain assembly. The specific fixing method can be welding, bolt connection, etc., as long as the zipper head 23 can move synchronously with the rolling curtain assembly. In a preferred embodiment, the zipper head 23 is fixed to the sleeve 24 and is located between the rolling curtain assembly and the chain. Since the sleeve 24 is sleeved on the connecting shaft 25, and the connecting shaft 25 is connected to the rolling curtain blades 10 and the chain links 26, the zipper head 23 can move synchronously with the movement of the rolling curtain assembly. 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 chute, the lower frame assembly 16 is located below the chute, and the upper chain teeth of the upper dust-proof cloth 21 and the lower chain teeth of the lower dust-proof cloth 22 are respectively located on the upper and lower sides of the opening of the chute. The zipper head 23 is located on the side of the chute, adjacent to the side of the rolling curtain assembly, and is installed on the connecting shaft 25 through the sleeve 24, and is located between the rolling curtain blades 10 and the chain links 26. Such a position setting enables the zipper head 23 to move synchronously along the opening of the chute when the rolling curtain assembly moves, realizing the engagement and separation of the upper chain teeth and the lower chain teeth. When the zipper head 23 is fixed to the first rolling curtain blade of the rolling curtain assembly, the zipper assembly is used to seal the chute between the first rolling curtain blade and the end of the stroke of the guide rail assembly. When the rolling curtain assembly is fully deployed, the first rolling curtain blade reaches the end of the stroke of the guide rail assembly. At this time, the zipper head 23 is located at the opening of the chute at the end of the stroke of the guide rail assembly. At this time, the zipper is fully opened. When the rolling curtain assembly is retracted into the rolling curtain box 13, the first rolling curtain blade moves towards the rolling curtain box 13, and the chute between the first rolling curtain blade and the end of the stroke of the guide rail assembly no longer accommodates the rolling curtain assembly. Under the action of the zipper head 23, closing the upper dust-proof cloth 21 and the lower dust-proof cloth 22 can effectively seal the gap between the first rolling curtain blade and the end of the guide rail assembly, preventing dust from entering. The rolling curtain assembly can adopt an end plate 14. When the zipper head 23 is fixed to the end plate 14, the zipper assembly is used to seal the chute between the end plate 14 and the end of the stroke of the guide rail assembly. The end plate 14, as the end closing component of the rolling curtain assembly, the gap between it and the end of the stroke of the guide rail assembly is likely to become a channel for dust to enter. By fixing the zipper head 23 to the end plate 14, the gap can be sealed by the zipper assembly when the rolling curtain assembly moves, improving the dust-proof effect. Specific usage instructions When it is necessary to pull out the electric rolling curtain of the pickup truck cargo box, the user starts the electric drive unit through the control switch. The motor of the electric drive unit starts to rotate, drives the driving block 27 on the chain to move through the gear transmission mechanism, and then drives the chain to move along the chute of the guide rail assembly in the direction away from the rolling curtain box 13. When the chain moves, the rolling curtain blades 10 of the rolling curtain assembly are sequentially unfolded through the connecting shaft 25 and the sleeve 24. Since the zipper head 23 is fixed on the sleeve 24, as the chain and the rolling curtain assembly move, the zipper head 23 also moves synchronously in the unfolding direction. During the movement, the zipper head 23 separates the upper chain teeth of the upper dust-proof cloth 21 and the lower chain teeth of the lower dust-proof cloth 22, so that the zipper assembly is in an open state, and the opening of the chute is exposed, allowing the chain and the rolling curtain assembly to slide freely in the chute. When the rolling curtain assembly is fully unfolded, the rolling curtain blades 10 cover the entire cargo box opening. At this time, the zipper head 23 is located at the end of the stroke of the guide rail assembly, and the gap between the first rolling curtain blade or the end plate 14 and the end of the guide rail assembly is exposed through the open state of the zipper assembly, meeting the requirement of fully opening the cargo box opening. When it is necessary to close the electric rolling curtain, the electric drive unit runs in reverse, and the motor drives the gear transmission mechanism to make the chain move in the direction close to the rolling curtain box 13. The chain drives the rolling curtain blades 10 of the rolling curtain assembly to be sequentially retracted into the rolling curtain box 13, and at the same time, the zipper head 23 also moves in the reverse direction with the chain and the rolling curtain assembly. During the reverse movement, the zipper head 23 gradually meshes the upper chain teeth and the lower chain teeth. As the zipper head 23 moves, the upper dust-proof cloth 21 and the lower dust-proof cloth 22 gradually cover the opening of the chute. When the rolling curtain assembly is completely received in the rolling curtain box 13, the zipper head 23 moves to the initial position, the zipper assembly is completely closed, the upper dust-proof cloth 21 and the lower dust-proof cloth 22 are closely attached, and the opening of the chute is completely sealed, effectively preventing external dust, sediment and other particulate matters from entering the inside of the chute. During the whole working process, the electric drive unit realizes the precise control of the moving speed and position of the rolling curtain assembly by precisely controlling the rotation direction and speed of the motor. The zipper assembly is mechanically connected with the rolling curtain assembly and the chain, realizing synchronous action, ensuring that the chute opening is exposed when the rolling curtain is opened and the chute opening is sealed when the rolling curtain is closed, so as to effectively solve the dust-proof problem of the traditional pickup truck rolling curtain without affecting the normal use of the rolling curtain.
[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An electric rolling curtain, comprising a guide rail assembly, the guide rail assembly including an upper frame assembly (15) and a lower frame assembly (16) and a chute located therebetween; a rolling curtain assembly, the side of the rolling curtain assembly being fixedly connected to a chain, the chain being placed in the chute of the guide rail assembly and being able to drive the rolling curtain assembly to move under the action of an electric drive unit; It is characterized in that further comprising a zipper assembly, the zipper assembly including an upper dust-proof cloth (21) with upper teeth, a lower dust-proof cloth (22) with lower teeth and a zipper head (23), the upper teeth, the zipper head (23) and the lower teeth forming a zipper mating structure; wherein, the zipper head is fixedly connected to the rolling curtain assembly, the upper dust-proof cloth (21) is fixed on the upper frame assembly (15), the lower dust-proof cloth (22) is fixed on the lower frame assembly (16), and when the rolling curtain assembly moves, it drives the zipper head to move, thereby realizing the opening and closing and sealing of the zipper assembly relative to the chute.
2. An electric rolling curtain according to claim 1, characterized in that, There are two guide rail assemblies, namely a first guide rail assembly (11) and a second guide rail assembly (12), and the rolling curtain assembly is located between the first guide rail assembly and the second guide rail assembly.
3. An electric rolling curtain according to claim 1, characterized in that, The side of the rolling curtain assembly is connected to the chain through a connecting shaft (25), a sleeve (24) is sleeved outside the connecting shaft (25), and the zipper head (23) is installed on the sleeve (24) and is located between the rolling curtain assembly and the chain.
4. An electric rolling curtain according to claim 1, characterized in that, The rolling curtain assembly includes a plurality of rolling curtain blades, the chain includes a plurality of chain links, the side of each rolling curtain blade is connected to a chain link through a connecting shaft, a sleeve is sleeved outside the connecting shaft, and the zipper head is fixed on the sleeve and is located between the rolling curtain blade and the chain link.
5. An electric rolling curtain according to claim 4, characterized in that, The zipper head (23) is fixed on the first rolling curtain blade of the rolling curtain assembly, and the zipper assembly is used to seal the chute between the first rolling curtain blade and the end of the travel of the guide rail assembly; or, the zipper head (23) is fixed on the end plate of the rolling curtain assembly, and the zipper assembly is used to seal the chute between the end plate and the end of the travel of the guide rail assembly.
6. The electric rolling curtain according to claim 1, wherein, The chain link is provided with a transmission block (27), and the electric drive unit drives the chain link to move through the transmission block, and the rolling curtain blade is fixed on the chain link.
7. An electric rolling curtain according to claim 1, characterized in that, The upper frame assembly (15) includes an upper profile and an upper sealing strip fixed on the upper profile, the upper dust-proof cloth (21) is fixed on the upper sealing strip, the lower frame assembly (16) includes a lower profile and a lower sealing strip fixed on the lower profile, and the lower dust-proof cloth (22) is fixed on the lower sealing strip.
8. An electric rolling curtain according to claim 7, characterized in that, The upper frame assembly and the lower frame assembly are of an integral structure, the integral structure has a profile body, the chute is formed on the side of the profile body, the chain link is located in the chute, and the connecting shaft at the end of the rolling curtain blade extends into the chute to be connected to the chain link.
9. A pickup truck having a cargo loading area, characterized in that, The electric rolling curtain according to any one of claims 1-8 is used in the cargo loading area.