An elastic support device for a curtain cord roller

Abstract

An elastic support device for a curtain cord reel includes a base, a cover, and a drum. A positioning block with a cord threading hole is located at the bottom of the base. The cover is positioned on the upper part of the base, and the two ends of the base and the two ends of the cover are fastened together by a snap-fit ​​structure. A drum is positioned between the base and the cover, with a cord wound around its outer wall. One end of the cord passes downwards through the cord threading hole. Two left support rods (front and rear) are located on the upper left side of the base, and two right support rods (front and rear) are located on the upper right side of the base. The height H1 of the left support rod is lower than the height H2 of the right support rod. An elastic support leg is located at the top of the left support rod. The elastic deformation of the elastic support leg reduces the height of the left support rod, allowing the base to be smoothly inserted into the track. After insertion, the elastic support leg returns to its original position under elastic force, ensuring good support between the cord reel and the track, making the cord reel assembly more stable and reliable.

Description

Technical Field

[0001] This utility model relates to a cord reel, and more particularly to an elastic support device for a curtain cord reel, belonging to the field of curtain technology. Background Technology

[0002] There are many types of blinds, such as Venetian blinds and honeycomb blinds. Their structure mainly consists of a track, curtain fabric, a cord winder for raising and lowering the curtain, and a drive mechanism for rotating the cord winder. The cord winder comprises a cord winder bracket, a drum, and a cord. The cord winder bracket is installed in the track. To ensure the cord winder is stable and does not wobble during winding or unwinding, the cord winder bracket needs to be accurately and reliably positioned in conjunction with the track. Existing cord winder brackets (as shown in the attached image) Figure 8 — Figure 9 (As shown) It typically includes a base 1′ and a protective cover 2′. Support rods 3′ facing upwards are set at the four corners of the base 1′. A protruding positioning block 4′ is set at the bottom of the base. The rope winding bracket is set in the track, which consists of a base plate 5′ and two side plates 6′. A positioning hole 7′ is opened in the base plate 5′, and the positioning block 4′ is positioned and fitted with the positioning hole 7′. Vertical side plates 6′ are set on both sides of the base plate 5′. An upper baffle 8′ is set on the upper inner wall of the side plates 6′. A barb 9′ is set on the inner side of the upper baffle 8′. A groove 10′ is formed between the barb 9′, the upper baffle 8′, and the side plates 7′. During installation, the elastic deformation of the side plates 6′ is used to slightly open the side plates 6′ outwards, making the upper opening of the track wider. Then, the rope winding bracket is placed into the track from the upper opening downwards, and the positioning block 4′ fits perfectly. The support rods 3' at the four corners of the rope winding bracket are inserted into the positioning holes 7' of the base plate 5' and the slots 10' on the inner walls of the side plates 6', thus positioning the rope winding bracket. However, this structure has the following drawbacks: because the inner side of the upper baffle 8' is provided with barbs 9', when the rope winding bracket is placed into the track from the top of the track, the top of the support rods 3' at the four corners is easily blocked by the barbs 9', making it impossible for them to be inserted into the slots 10'. Workers need to forcefully turn the side plates 6' to insert the support rods 3' into the slots 10' of the barbs 9', making the assembly operation more troublesome. In addition, some people want to insert the rope winding bracket into the track from the side, but because the bottom of the base 1' is provided with a protruding positioning block 4', its height is slightly higher than the height inside the track, so the rope winding bracket cannot be inserted into the track from the side. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an elastic support device for curtain rope rollers that makes the assembly of the rope roller and the track more convenient and labor-saving.

[0004] The technical solution of the elastic support device for a curtain cord reel of this utility model is as follows: it includes a base, a protective cover, and a drum. A positioning block is provided at the bottom of the base, and a cord threading hole is opened in the positioning block. A protective cover is provided at the top of the base. The two ends of the base and the two ends of the protective cover are fastened together by a snap-fit ​​structure. A drum is provided between the base and the protective cover. A cord is wound around the outer wall of the drum. One end of the cord passes downward through the cord threading hole. Two left support rods are provided at the upper left side of the base, and two right support rods are provided at the upper right side of the base. The height H1 of the left support rod is lower than the height H2 of the right support rod. An elastic support leg is provided at the top of the left support rod.

[0005] Furthermore, the elastic support leg includes a vertical support plate, on which a horizontal elastic plate is provided, and an elastic deformation space is formed between the lower part of the horizontal elastic plate and the upper part of the left support rod.

[0006] Furthermore, a hemispherical protrusion is provided on the upper part of the side of the transverse elastic sheet away from the vertical support sheet.

[0007] Furthermore, the buckle structure includes slots on the inner walls of the left and right support rods, and buckles on the outer walls of the four corners of the cover, with the cover being secured to the slots via the buckles.

[0008] Furthermore, the base is provided with lower semi-circular shaft holes at both ends, and the cover is provided with upper semi-circular shaft holes at both ends. The drum is rotatably engaged with the lower and upper semi-circular shaft holes.

[0009] The beneficial effects of this utility model's elastic support device for a curtain cord reel are as follows: By shortening the height of the left support rod (the support rod on the side corresponding to the protruding positioning block of the base) and setting an elastic leg on the upper part of the left support rod, the height of the left support rod is reduced by the elastic deformation of the elastic leg, so that the base can be smoothly inserted from one side of the track, making the installation of the cord reel more convenient and quick. After being inserted into place (i.e., the protruding positioning block at the bottom of the base 1 is inserted into the positioning hole of the track), the elastic leg can be reset under the action of elasticity, ensuring that it can play a good supporting role between the cord reel and the track, making the cord reel assembly more stable and reliable, and preventing it from shaking when the cord is reeled in. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of an elastic support device for a curtain rope roller according to the present invention;

[0011] Figure 2 This is a schematic diagram of the elastic support device and track of a curtain rope roller according to this utility model.

[0012] Figure 3This is an exploded perspective view of the elastic support device for a curtain rope roller according to this utility model;

[0013] Figure 4 yes Figure 4 A magnified view of part A;

[0014] Figure 5 This is a front view diagram of the base;

[0015] Figure 6 This is a 3D diagram showing the base inserted into the side of the track;

[0016] Figure 7 This is a schematic diagram of the structure of an elastic support device for a curtain rope roller, as described in this utility model, installed in a curtain.

[0017] Figure 8 This is a 3D schematic diagram showing the existing rope reel inserted from above the track.

[0018] Figure 9 This is a schematic diagram of the existing rope reel and track working together.

[0019] Figure 1 — Figure 7 In the middle section, 1. Base; 11. Rope hole; 12. Left support rod; 13. Right support rod; 14. Elastic support leg; 141. Vertical support piece; 142. Horizontal elastic piece; 143. Elastic deformation space; 144. Protrusion; 15. Slot; 16. Lower semi-circular shaft hole; 17. Positioning block; 2. Protective cover; 21. Inverted buckle; 22. Upper semi-circular shaft hole; 3. Drum; 4. Rope winding; 100. Track; 101. Base plate; 102. Side plates; 103. Positioning hole; 104. Upper baffle; 105. Inverted hook; 106. Slot; 107. Curtain body; 108. Tail cover;

[0020] Figure 8 — Figure 9 In the middle, 1′ is the base; 2′ is the protective cover; 3′ is the support rod; 4′ is the positioning block; 5′ is the bottom plate; 6′ is the side plates; 7′ is the positioning hole; 8′ is the upper baffle; 9′ is the barb; 10′ is the slot. Detailed Implementation

[0021] This utility model relates to an elastic support device for a curtain cord reel, such as... Figure 1 — Figure 7As shown, the device includes a base 1, a protective cover 2, and a drum 3. A positioning block 17 is provided at the bottom of the base 1, and a rope hole 11 is provided in the positioning block 17. The protective cover 2 is provided on the upper part of the base 11. The two ends of the base 1 and the two ends of the protective cover 2 are fastened together by a snap-fit ​​structure. A drum 3 is provided between the base 1 and the protective cover 2. A rope 4 is wound around the outer wall of the drum 3. One end of the rope 4 passes downward through the rope hole 11. Two left support rods 12 are provided on the upper left side of the base 1, and two right support rods 13 are provided on the upper right side of the base 1. The height H1 of the left support rod 12 is lower than the height H2 of the right support rod 13. An elastic support leg 14 is provided on the upper part of the left support rod 12.

[0022] Furthermore, the elastic support leg 14 includes a vertical support plate 141, on which a horizontal elastic plate 142 is disposed. An elastic deformation space 143 is formed between the lower part of the horizontal elastic plate 142 and the upper part of the left support rod 12. The vertical support plate 141 and the horizontal elastic plate 142 form a "┐" shaped elastic support leg 14. When the horizontal elastic plate 142 is subjected to downward compressive force, it can elastically bend and deform towards the downward elastic deformation space 143, thereby reducing the height of the elastic support leg 14.

[0023] Furthermore, a hemispherical protrusion 144 is provided on the upper part of the lateral elastic piece 142 away from the vertical support piece 141. With the hemispherical protrusion 144, the contact area between the lateral elastic piece 142 and the upper baffle 104 of the track 100 is reduced, and the friction is reduced. On the one hand, this makes it easier for the elastic support leg 14 to be inserted into the track 100, and on the other hand, it reduces the wear of the elastic support leg 14 when it is inserted into the slot 106 of the track 100.

[0024] Furthermore, the buckle structure includes slots 15 formed on the inner walls of the left support rod 12 and the right support rod 13, and buckles 21 set on the outer walls of the four corners of the cover 2. The cover 2 is secured to the slots 15 by the buckles 21. With the cooperation of the buckles 21 and the slots 15, the cover 2 is very easy to install and remove.

[0025] Furthermore, the base 1 is provided with lower semi-circular shaft holes 16 at both ends, and the protective cover 2 is provided with upper semi-circular shaft holes 22 at both ends. The drum 3 is rotatably engaged with the lower semi-circular shaft holes 16 and the upper semi-circular shaft holes 22.

[0026] This utility model discloses an elastic support device for a curtain cord reel, applicable to various curtains such as Venetian blinds and honeycomb blinds. The curtain mainly includes a track 100, which consists of a base plate 101 and two side plates 102. Positioning holes 103 are provided in the base plate 101, and vertical side plates 102 are provided on both sides of the base plate 101. An upper baffle 104 is provided on the upper inner wall of the side plates 102, and a barb 105 is provided on the inner side of the upper baffle 104. A groove 106 is formed between the barb 105, the upper baffle 104, and the side plates 102 to fix the cord reel to the track. In track 100, the positioning block 17 at the bottom of the rope winder base 1 is positioned and engaged with the positioning hole 103 at the bottom of track 100. A curtain 107 is provided at the lower part of track 100. One end of the rope 4 of the rope winder passes through the rope hole 11 and then passes through the bottom of the curtain 107 and is fixedly connected to it. Tail caps 108 are provided at both ends of track 100. A drive structure is provided in track 100 inside the tail cap 108. The drive structure can be composed of a manual rope pull and gear transmission components, or it can be driven by a motor. The output shaft of the gear transmission component or the motor drives the drum 3 of the rope winder to rotate. When assembling the rope winder using this solution with the track 100, the base 1 can be inserted into the side opening of the track 100 first. Since the left support rod 12 of the base 11 is equipped with an elastic support leg 14, the elastic support leg 14 can be inserted into the slot 106 first. The slot 106 squeezes the elastic support leg 14, causing it to deform downward elastically, thereby reducing the height of the left support rod 12. This allows the positioning block 17 protruding from the left side and bottom of the base 1 to be smoothly inserted into the track 100 until the positioning block 17 at the bottom of the base 1 moves to align with the positioning hole 103 of the track 100. At the corresponding position, the positioning block 17 is inserted into the positioning hole 103, and the elastic support leg 14 is elastically reset upward under the action of elastic force. Then, the drum 3 with the winding rope 4 wound on the outer wall is placed into the base 1. The lower end of the winding rope 4 passes through the rope hole 11 and is connected to the curtain body 107. The lower parts of both ends of the drum 3 are engaged with the lower semi-circular shaft hole 16 of the base 1. Finally, the protective cover 2 is placed on the upper part of the drum 3. The upper semi-circular shaft hole 22 at both ends of the protective cover 2 is engaged with the upper parts of both ends of the drum 3. The inverted buckle 21 of the protective cover 2 is engaged with the slot 15 of the base 1, so that the winding rope device and the track 100 are assembled.

[0027] The above specific embodiments are used to explain and illustrate the present utility model, and are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made to the present utility model within the spirit and protection scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. An elastic support device for a curtain cord reel, comprising a base (1), a cover (2), and a drum (3), wherein a positioning block (17) is provided at the bottom of the base (1), a cord threading hole (11) is provided in the positioning block (17), the cover (2) is provided at the upper part of the base (1), the two ends of the base (1) are fastened to the two ends of the cover (2) by a snap-fit ​​structure, and a drum (3) is provided between the base (1) and the cover (2), wherein a cord (4) is wound around the outer wall of the drum (3), and one end of the cord (4) passes downward through the cord threading hole (11), characterized in that: The base (1) has two left support rods (12) on the upper left side and two right support rods (13) on the upper right side. The height H1 of the left support rod (12) is lower than the height H2 of the right support rod (13). An elastic support leg (14) is provided on the upper part of the left support rod (12).

2. The elastic support device for a curtain cord reel as described in claim 1, characterized in that: The elastic support leg (14) includes a vertical support plate (141), and a horizontal elastic plate (142) is provided on the vertical support plate (141). An elastic deformation space (143) is formed between the lower part of the horizontal elastic plate (142) and the upper part of the left support rod (12).

3. The elastic support device for a curtain cord reel as described in claim 2, characterized in that: A hemispherical protrusion (144) is provided on the upper part of the side of the transverse elastic sheet (142) away from the vertical support sheet (141).

4. The elastic support device for a curtain cord reel as described in claim 1, characterized in that: The buckle structure includes slots (15) on the inner walls of the left support rod (12) and the right support rod (13), and buckles (21) on the outer walls of the four corners of the cover (2). The cover (2) is fastened to the slots (15) by the buckles (21).

5. The elastic support device for a curtain cord reel as described in claim 1, characterized in that: The base (1) is provided with lower semi-circular shaft holes (16) at both ends, and the cover (2) is provided with upper semi-circular shaft holes (22) at both ends. The drum (3) rotates with the lower semi-circular shaft holes (16) and the upper semi-circular shaft holes (22).

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