Composite guide rail for electric fabric roller shutter

Abstract

The utility model relates to the technical field of fabric roller shutter sunshade equipment, in particular to a composite guide rail for an electric fabric roller shutter. A sliding groove used for being embedded into the side edge of the fabric roller shutter is formed in a sliding rail of the composite guide rail. A supporting table is arranged at the bottom of the sliding groove. The supporting table and the inner wall of the inserting groove form a buffering cavity in a surrounding mode. And an elastic supporting structure is arranged in the buffer chamber. The first side edge of the connecting strip in the elastic supporting structure is connected with the supporting table. The connecting strip expands towards the outer side of the sliding rail. The first supporting strip, the second supporting strip and the third supporting strip are sequentially connected to form a bent structure. And the bending structure is connected with the second side edge of the connecting strip. The first supporting strips are folded inwards towards the inner sides of the sliding rails. The second supporting strip expands towards the outer side of the sliding rail. The third supporting strip is folded inwards towards the inner side of the sliding rail. According to the composite guide rail for the electric fabric roller shutter, the machining difficulty is reduced, the supporting effect on the fabric roller shutter is improved, and the smoothness of winding and unwinding of the fabric roller shutter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fabric rolling shutter sunshade equipment, and particularly relates to a composite guide rail for an electric fabric rolling shutter. Background Art

[0002] The electric fabric rolling shutter is a widely used modern building external sunshade device. Its main feature is to achieve the automatic lifting and lowering of the fabric rolling shutter through an electric drive system, so as to achieve the purposes of sunshading, light adjustment, privacy protection, and energy conservation. Among them, the head end of the fabric rolling shutter is inserted into the drive shaft of the drive component through an upper buckle strip. The tail end of the fabric rolling shutter is clamped in the lower buckle strip groove of the bottom beam through a lower buckle strip. A rolling shutter side convex is arranged on the side edge of the fabric rolling shutter. The rolling shutter side convex is inserted into the track of the chute, and the fabric rolling shutter is lifted and lowered along the track of the chute under the drive of the drive component.

[0003] The applicant has made two major product iterative designs for the above-mentioned traditional guide rail for electric fabric rolling shutters, and both have obtained patent authorization. The first product upgrade involves the guide rail for fabric rolling shutters disclosed in the Chinese patent CN213743178U which has obtained the utility model authorization. Among them, aiming at the problem of poor flatness of the fabric rolling shutter during winding and unwinding, an elastic component is arranged between the tensioning end face of the chute and the buckle groove of the guide rail, so that the fabric rolling shutter inserted into the track forms a flexible connection with the guide rail, and a steel wire spring is used as the elastic component to apply a tensioning force to the side edge of the fabric rolling shutter, thereby ensuring the flatness of the fabric rolling shutter during winding and unwinding.

[0004] However, using a steel wire spring as the elastic component, on the one hand, the assembly process of the steel wire spring is relatively complex; on the other hand, the steel wire spring forms a point support structure between the buckle groove and the chute, and it is difficult to provide a uniform tension for the fabric rolling shutter in the horizontal direction.

[0005] Based on the above problems, on the basis of the first product upgrade, the applicant carried out the second product upgrade. The second product upgrade involves a linear support guide rail for an electric fabric rolling shutter disclosed in the Chinese patent CN218479775U which has obtained the utility model authorization. Among them, the linear support guide rail is provided with an elastic support strip in the second chute of the composite guide rail. By using the elastic support strip extending along the axis of the composite guide rail, a linear support is formed between the zipper slide rail and the composite guide rail, optimizing the point support structure of the steel wire spring in the first-generation product, and providing a more uniform tension for the fabric curtain in the horizontal direction.

[0006] However, in the above-mentioned second-generation products, the composite guide rail and the elastic support strip are integrally injection-molded. The bending structure of the elastic support strip makes it difficult in the processing technology. In order to reduce the demolding difficulty of the composite guide rail, the processing technology usually adopts a certain advance amount. In this way, for the elastic support strip, it is difficult to ensure the forming posture of the bending structure, which greatly affects the elastic effect of the elastic support strip. During the actual use process, the actual maintenance cycle of the second-generation products is much earlier than the preset maintenance cycle, increasing the maintenance cost. The applicant needs to conduct a new round of product upgrade and optimization for the electric fabric roller shutter guide rail in view of the above technical problems. Summary of the Invention

[0007] The purpose of the present utility model is to provide a composite guide rail structure during the use of an electric fabric roller shutter, so as to reduce the processing difficulty of the composite guide rail, improve the support effect on the fabric roller shutter, and enhance the smoothness of the retraction and extension of the fabric roller shutter.

[0008] To achieve the above purpose, the present utility model adopts the following scheme:

[0009] A composite guide rail for an electric fabric roller shutter includes an outer frame structure, a track, and a slide rail for installation on a building structure. The track is clamped in a card slot of the outer frame structure, and the slide rail is embedded in a slot of the track.

[0010] A chute for embedding the side edge of the fabric roller shutter is provided on the slide rail. A support platform is arranged at the bottom of the chute. The support platform and the inner wall of the slot surround to form a buffer chamber. An elastic support structure is arranged in the buffer chamber. The longitudinal direction of the elastic support structure is arranged along the extension direction of the chute, and the compression direction of the elastic support structure points to the opening of the slot.

[0011] The elastic support structure includes a connecting strip, a first support strip, a second support strip, and a third support strip. The first side of the connecting strip is connected to the support platform. The connecting strip expands towards the outside of the slide rail. The first support strip, the second support strip, and the third support strip are sequentially connected to form a bending structure. The bending structure is connected to the second side of the connecting strip. The first support strip retracts towards the inside of the slide rail. The second support strip expands towards the outside of the slide rail. The third support strip retracts towards the inside of the slide rail. The third support strip is in contact with the inner wall of the slot.

[0012] Preferably, the first support strip and the connecting strip are connected to form a first V-shaped bend. The second support strip and the first support strip are connected to form a second V-shaped bend. The third support strip and the second support strip are connected to form a third V-shaped bend.

[0013] Preferably, rounded corners are provided at the outer sides of the bending parts of the first V-shaped bend, the second V-shaped bend, and the third V-shaped bend.

[0014] Preferably, arc-shaped grooves are provided on the inner sides of the bends of the first V-shaped bend, the second V-shaped bend, and the third V-shaped bend. With such an arrangement, the arc-shaped grooves are used to form a thinning structure at the bends, providing a directional guide for the compression of the elastic support structure, thereby further enhancing the support effect on the fabric roller blind. In addition, the design of the arc-shaped grooves is also beneficial for placing the core-pulling body during the processing and forming of the elastic support structure, not only further reducing the difficulty of demolding, but also facilitating the elastic support structure to maintain the formed posture, thereby ensuring the consistency of the forming process of the elastic support structure.

[0015] Preferably, a limiting plate is provided in the slot. The limiting plate is located outside the buffer chamber, and the limiting plate and the inner wall of the slot surround to form a guiding groove. With such an arrangement, the guiding groove is used to provide limiting guidance for the elastic support structure during compression or reset, which is beneficial to avoid the situation of longitudinal inclination of the elastic support structure, thereby further enhancing the stability of the elastic support structure applying a tension force to the fabric roller blind.

[0016] Preferably, a pair of elastic support structures are symmetrically arranged along the center line of the sliding groove.

[0017] Preferably, clamping plates are provided at the opening of the track, and a pair of clamping plates are symmetrically arranged along the center line of the track.

[0018] Preferably, the radius of the arc-shaped groove is 0.3 mm - 0.5 mm.

[0019] Preferably, the thicknesses of the connecting strip, the first support strip, the second support strip, and the third support strip are all 0.6 mm - 0.8 mm.

[0020] Preferably, the cross-sections of the connecting strip, the first support strip, the second support strip, and the third support strip are all spindle-shaped. With such an arrangement, the spindle-shaped structure is beneficial for the elastic support structure to form a thinning structure at the bend, providing a directional guide for the compression of the elastic support structure.

[0021] Compared with the prior art, a composite guide rail for an electric fabric rolling curtain provided by the utility model has the following substantial features and improvements: By arranging an elastic support structure in a buffer chamber formed between a slot and a slide rail, the composite guide rail for the electric fabric rolling curtain uses the elastic support structure to provide stable support for the fabric rolling curtain, which can effectively absorb and relieve external force impacts, reduce vibrations and noises during the operation of the fabric rolling curtain, improve the smoothness and quietness of the operation. The elastic support structure is formed by a continuous W-shaped bending structure successively connected by a connecting strip, a first support strip, a second support strip, and a third support strip. The W-shaped bending structure is integrated on the slide rail by using the connecting strip, which is beneficial to the integral molding of the elastic support structure and the slide rail, greatly reducing the processing difficulty of the composite guide rail. And by setting an initial expansion direction towards the outside of the slide rail on the connecting strip, a compression tendency guidance is provided for the elastic support structure, which is beneficial to the stability of the elastic support structure for buffering, improving the support effect on the fabric rolling curtain and the smoothness of the retraction and extension of the fabric rolling curtain. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. is an assembly structure schematic diagram of a composite guide rail for an electric fabric rolling curtain in an embodiment of the utility model.

[0023] Figure 2 FIG. is an end face structure schematic diagram of a composite guide rail for an electric fabric rolling curtain in an embodiment of the utility model.

[0024] Figure 3 is Figure 2 a partial enlarged structure schematic diagram of part A in FIG.

[0025] Reference numerals: 1, outer frame structure; 2, track; 3, slide rail; 4, card slot; 5, slot; 6, chute; 7, support platform; 8, elastic support structure; 9, buffer chamber; 10, limit plate; 11, clamping plate; 81, connecting strip; 82, first support strip; 83, second support strip; 84, third support strip; 85, fillet; 86, arc groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following describes in detail the specific embodiments of the utility model with reference to the drawings.

[0027] As Figures 1 - 3 shown, an embodiment of the utility model provides a composite guide rail for an electric fabric rolling curtain, aiming to reduce the processing difficulty of the composite guide rail, improve the support effect on the fabric rolling curtain, and enhance the smoothness of the retraction and extension of the fabric rolling curtain.

[0028] In the embodiment of the present utility model, a composite guide rail for an electric fabric rolling curtain uses an elastic support structure 8 to provide stable support for the fabric rolling curtain, which can effectively absorb and relieve external force impacts, reduce vibrations and noises during the operation of the fabric rolling curtain, and improve the smoothness and quietness of the operation. The elastic support structure 8 forms a continuous W-shaped bending structure through a connecting strip 81, a first support strip 82, a second support strip 83, and a third support strip 84 connected in sequence. The W-shaped bending structure is integrated on the slide rail 3 by using the connecting strip 81, which is beneficial to the integral molding of the elastic support structure 8 and the slide rail 3, greatly reducing the processing difficulty of the composite guide rail. And by means of the initial expansion direction of the connecting strip 81 towards the outside of the slide rail 3, a compression tendency guidance is provided for the elastic support structure 8, which is beneficial to the stability of the elastic support structure 8 for buffering, improves the support effect on the fabric rolling curtain, and enhances the smoothness of the retraction and extension of the fabric rolling curtain.

[0029] As Figure 1 shown in combination with Figure 2 as shown, a composite guide rail for an electric fabric rolling curtain includes an outer frame structure 1, a track 2, and a slide rail 3 for installation on a building structure. The track 2 is snap-fitted into a slot 4 of the outer frame structure 1. The slide rail 3 is embedded in a slot 5 of the track 2.

[0030] As Figure 2 shown, a chute 6 for embedding the side edge of the fabric rolling curtain is provided on the slide rail 3. A support platform 7 is provided at the bottom of the chute 6. The support platform 7 and the inner wall of the slot 5 surround to form a buffer chamber 9. An elastic support structure 8 is provided in the buffer chamber 9. The longitudinal direction of the elastic support structure 8 is arranged along the extension direction of the chute 6. The compression direction of the elastic support structure 8 points to the opening of the slot 5.

[0031] As Figure 2 shown in combination with Figure 3 as shown, the elastic support structure 8 includes a connecting strip 81, a first support strip 82, a second support strip 83, and a third support strip 84. The first side of the connecting strip 81 is connected to the support platform 7. The connecting strip 81 expands towards the outside of the slide rail 3. The first support strip 82, the second support strip 83, and the third support strip 84 are connected in sequence to form a bending structure. The bending structure is connected to the second side of the connecting strip 81. The first support strip 82 retracts towards the inside of the slide rail 3. The second support strip 83 expands towards the outside of the slide rail 3. The third support strip 84 retracts towards the inside of the slide rail 3. The third support strip 84 is in contact with the inner wall of the slot 5.

[0032] As Figure 3As shown, the first support bar 82 and the connecting bar 81 are connected to form a first V-shaped bend. The second support bar 83 and the first support bar 82 are connected to form a second V-shaped bend. The third support bar 84 and the second support bar 83 are connected to form a third V-shaped bend. Fillets 85 are provided at the outer sides of the bends of the first V-shaped bend, the second V-shaped bend, and the third V-shaped bend for transition. Arc grooves 86 are provided at the inner sides of the bends of the first V-shaped bend, the second V-shaped bend, and the third V-shaped bend.

[0033] For example, the thicknesses of the connecting bar 81, the first support bar 82, the second support bar 83, and the third support bar 84 are all 0.6 mm - 0.8 mm. The structural dimensions of the connecting bar 81, the first support bar 82, the second support bar 83, and the third support bar 84 can also be adaptively adjusted according to the actual support requirements of the fabric rolling curtain.

[0034] Among them, the arc groove 86 is used to form a thinning structure at the bend, providing a directional guide for the compression of the elastic support structure 8, thereby further improving the support effect on the fabric rolling curtain. In addition, the design of the arc groove 86 is also beneficial to placing the core-pulling body during the processing and forming of the elastic support structure 8, which not only further reduces the demolding difficulty but also helps the elastic support structure 8 to maintain the forming posture, thereby ensuring the consistency of the forming process of the elastic support structure 8.

[0035] For example, the radius of the arc groove 86 is 0.3 mm - 0.5 mm, which is convenient for adapting to the minimum radius of the core-pulling body and meeting the requirements of the forming process.

[0036] According to some preferred embodiments of the present utility model, as Figure 2 shown, a pair of elastic support structures 8 are symmetrically arranged along the center line of the sliding groove 6.

[0037] In order to further improve the use stability of the composite guide rail, as Figure 2 shown, a limiting plate 10 is provided in the slot 5. The limiting plate 10 is located outside the buffer chamber 9. The limiting plate 10 and the inner wall of the slot 5 surround to form a guide groove. With such a setting, the guide groove is used to provide limiting guidance for the elastic support structure 8 during the compression or reset process, which is beneficial to avoiding the situation of longitudinal inclination of the elastic support structure 8, and further improving the stability of the elastic support structure 8 applying a tension force to the fabric rolling curtain.

[0038] In order to further reduce the assembly difficulty of the composite guide rail, as Figure 2 shown, a clamping plate 11 is provided at the opening of the track 2, and a pair of clamping plates 11 are symmetrically arranged along the center line of the track 2. Among them, the clamping plate 11 is used for the assembler to apply a clamping force to the track 2 by using a special caliper, thereby facilitating the installation of the track 2 into the outer frame structure 1.

[0039] According to a preferred embodiment of the present utility model, the cross-sections of the connecting strip 81, the first support strip 82, the second support strip 83 and the third support strip 84 are all fusiform. With such a setting, the fusiform structure is conducive to forming a thinning structure at the bending part of the elastic support structure 8, providing a directional guidance for the compression of the elastic support structure 8.

[0040] The present utility model is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present utility model can also have other implementation manners. For those skilled in the art, any technical solutions formed by making any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A composite guide rail for an electric fabric roller blind, comprising an outer frame structure (1) for installation on a building structure, a track (2) and a slide rail (3), wherein the track (2) is engaged in a slot (4) of the outer frame structure (1), and the slide rail (3) is embedded in a slot (5) of the track (2), characterized in that: The slide rail (3) is provided with a slide groove (6) for embedding into the side edge of the fabric roller blind, the bottom of the slide groove (6) is provided with a support platform (7), the support platform (7) and the inner wall of the slot (5) surround to form a buffer chamber (9), an elastic support structure (8) is provided in the buffer chamber (9), the longitudinal direction of the elastic support structure (8) is arranged along the extension direction of the slide groove (6), and the compression direction of the elastic support structure (8) points to the opening of the slot (5); The elastic support structure (8) comprises a connecting bar (81), a first supporting bar (82), a second supporting bar (83) and a third supporting bar (84); the first side of the connecting bar (81) is connected to the support platform (7); the connecting bar (81) expands toward the outside of the slide rail (3); the first supporting bar (82), the second supporting bar (83) and the third supporting bar (84) are sequentially connected to form a bending structure; the bending structure is connected to the second side of the connecting bar (81); the first supporting bar (82) is retracted toward the inside of the slide rail (3); the second supporting bar (83) is expanded toward the outside of the slide rail (3); the third supporting bar (84) is retracted toward the inside of the slide rail (3); and the third supporting bar (84) is in contact with the inner wall of the slot (5).

2. The composite guide rail for electric fabric roller blinds according to claim 1, characterized in that: The first support bar (82) and the connecting bar (81) are connected to form a first V-shaped bend, the second support bar (83) and the first support bar (82) are connected to form a second V-shaped bend, and the third support bar (84) and the second support bar (83) are connected to form a third V-shaped bend.

3. The composite guide rail for electric fabric roller blinds according to claim 2, characterized in that: Rounded corners (85) are provided on the outer sides of the bends of the first V-shaped bend, the second V-shaped bend and the third V-shaped bend for transition.

4. The composite guide rail for electric fabric roller blinds according to claim 2, characterized in that: Arc grooves (86) are arranged on the inner sides of the bends of the first V-shaped bend, the second V-shaped bend and the third V-shaped bend.

5. The composite guide rail for electric fabric roller blinds according to claim 1, characterized in that: A limiting plate (10) is provided in the slot (5), the limiting plate (10) is located outside the buffer chamber (9), and the limiting plate (10) and the inner wall of the slot (5) surround each other to form a guide groove.

6. The composite guide rail for electric fabric roller blinds according to claim 1, characterized in that: A pair of elastic support structures (8) are symmetrically arranged along the center line of the slide groove (6).

7. The composite guide rail for electric fabric roller blinds according to claim 1, characterized in that: A clamping plate (11) is provided at the opening of the track (2), and a pair of clamping plates (11) are symmetrically arranged along the center line of the track (2).

8. The composite guide rail for electric fabric roller blinds according to claim 4, characterized in that: The radius of the arc groove (86) is 0.3 mm-0.5 mm.

9. The composite guide rail for electric fabric roller blinds according to claim 1, characterized in that: The thickness of the connecting strip (81), the first supporting strip (82), the second supporting strip (83) and the third supporting strip (84) are all 0.6 mm to 0.8 mm.

10. The composite guide rail for electric fabric roller blinds according to claim 2, characterized in that: The cross-sections of the connecting strip (81), the first supporting strip (82), the second supporting strip (83) and the third supporting strip (84) are all shuttle-shaped.

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