Roller shutter pull rope winding and unwinding device

Abstract

The utility model relates to the field of roller shutters, in particular to a roller shutter pull rope winding and unwinding device, which is characterized by comprising a roller shutter, a pull rope, a fixing seat and a rope winding mechanism, the fixing seat and the rope winding mechanism are arranged below the roller shutter, at least one guide wheel is arranged at the lower end of the roller shutter, one end of the pull rope is fixed on the fixing seat, and the other end of the pull rope is fixed on the rope winding mechanism. And the other end of the pull rope is wound on the rope winding mechanism after being wound on the upper guide wheel, and the rope winding mechanism can perform the action of winding the pull rope. The curtain can be conveniently pulled down through the pull rope, the pull rope can be rolled up, the lower end of the curtain can be limited, the quality of the roller shutter can be improved, cleaning and maintenance are facilitated, the pull rope can be prevented from being wound and knotted, a user can use the roller shutter conveniently, noise generated by the wind action is small, and the influence on rest of the user is very small. The device is particularly suitable for being used on ships.

Description

Technical Field

[0001] The utility model relates to the field of rolling curtains, in particular to a rolling curtain pull rope retracting and releasing device. Background Art

[0002] In the patent document entitled "Roller shutter with counterbalancing device" with the publication number of Chinese patent application CN104302861A, a technical solution of "arranging a pull cord on the bottom rod at the lower end of the flexible sheet-like member" is disclosed. Since the pull cord is mainly used on windows where the bottom rod is placed out of reach of operators, the length of the pull cord generally needs to be longer.

[0003] In this way, when the roller blind is pulled down, the draw cord is generally curled and placed on the windowsill, which makes the windowsill look very messy, is not only unsightly, but also affects the user's cleaning and maintenance of the windowsill. The draw cords are also prone to entanglement and knotting, which brings inconvenience to the user.

[0004] Furthermore, there is no restriction structure at the lower end of the flexible sheet member, so when the unfolded flexible sheet member is affected by wind, its lower end is prone to large shaking, so that the flexible sheet member and / or the bottom rod are prone to collide with the window frame and / or the wall to generate noise, which is easy to affect the user's rest. Especially when used on a ship, it is not only susceptible to strong winds, but also prone to aggravating the shaking of the curtain due to the shaking of the ship, which will cause loud noise, thus having a relatively large adverse effect on the crew's rest.

[0005] Therefore, it is very necessary to design a roller blind cord retracting and releasing device to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of the utility model is to solve the above-mentioned problems and shortcomings, and to provide a roller blind pull cord retracting and releasing device, which can not only facilitate the curtain to be pulled down by the pull cord, but also can roll up the pull cord and help limit the lower end of the curtain, which can help improve the quality of the roller blind and facilitate cleaning and maintenance, can avoid the entanglement and knotting of the pull cord, and is convenient for users to use. The noise generated by the wind is small, and the impact on the user's rest is very small. It is particularly suitable for use on ships.

[0007] The technical solution of the utility model is achieved in this way:

[0008] A roller blind pull cord retracting and releasing device is characterized in that it includes a roller blind, a pull cord, a fixing seat, and a rope winding mechanism, wherein the fixing seat and the rope winding mechanism are both arranged below the roller blind, and at least one guide wheel is provided at the lower end of the roller blind, one end of the pull cord is fixed to the fixing seat, and the other end of the pull cord is wound around the guide wheel and then wound around the rope winding mechanism, so that the rope winding mechanism can perform the action of winding the pull cord.

[0009] Preferably, there are two guide wheels, which are respectively arranged on the left and right corners of the lower end of the rolling curtain, and the pull rope is wound around the two guide wheels.

[0010] Preferably, the rolling blind comprises a curtain and a positioning crossbar, the positioning crossbar is arranged on the lower end of the curtain, and the guide wheel is arranged on the positioning crossbar.

[0011] Preferably, the curtain is a sunlight fabric or a sunlight film.

[0012] Preferably, a guide wheel is arranged between the rope winding mechanism and the guide wheel, and the pull rope is wound around the guide wheel.

[0013] Preferably, the rope winding mechanism is a rope winding mechanism with a self-locking function.

[0014] Preferably, the rope winding mechanism comprises a positioning seat and a winding wheel, the winding wheel is rotatably arranged on the positioning seat, the other end of the pull rope is fixed on the winding wheel, and the winding wheel can wind up the pull rope.

[0015] Preferably, a winding ring groove is provided on the outer circumferential surface of the winding wheel, and the winding ring groove can be used to wind up the draw rope.

[0016] Preferably, an elastic limiter is provided on the positioning seat, and the elastic limiter is made to elastically act on the winding wheel, so as to limit the rotation of the winding wheel through the elasticity of the elastic limiter.

[0017] Preferably, a rotating handle is provided on the winding wheel.

[0018] The beneficial effects of the utility model are as follows: on the roller blind pull rope retracting and releasing device, the purpose of pulling down the roller blind can be achieved by the pull rope, which can meet the normal use requirements of the roller blind. The purpose of winding the pull rope can be achieved by the rope winding mechanism, so there is no need to place the pull rope on the windowsill, thereby reducing the chance of the windowsill being messy, which can not only improve the quality of the installation and use of the roller blind, but also facilitate the user to clean and maintain. And this can avoid the situation where the pull rope is entangled and knotted, so that it is convenient for the user to use. Through the joint action of the guide wheel, the pull rope, the fixed seat and the rope winding mechanism, the purpose of limiting the lower end of the roller blind can be achieved, so that when the wind acts on the roller blind, the shaking amplitude of the lower end of the roller blind can be reduced, which can reduce the strength of the curtain collision, thereby achieving the purpose of reducing noise, and further reducing the impact on the user's rest. It is particularly suitable for use in a ship environment where there is both wind action and overall shaking, which can help to provide a better rest environment for the crew. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the roller blind pull rope retracting and releasing device in the utility model.

[0020] Figure 2It is a structural schematic diagram of the rope winding mechanism in the utility model. DETAILED DESCRIPTION

[0021] like Figure 1 As shown, a roller blind pull cord retracting and releasing device described in the utility model comprises a roller blind 1, a pull cord 2, a fixing seat 3, and a rope winding mechanism 4, wherein the fixing seat 3 and the rope winding mechanism 4 are both arranged below the roller blind 1, and at least one guide wheel 5 is provided at the lower end of the roller blind 1, one end of the pull cord 2 is fixed on the fixing seat 3, and the other end of the pull cord 2 is wound around the guide wheel 5 and then wound around the rope winding mechanism 4, so that the rope winding mechanism 4 can perform the action of winding the pull cord 2.

[0022] In the roller blind pull cord retracting and releasing device, the purpose of pulling down the roller blind 1 can be achieved by the pull cord 2, which can meet the normal use requirements of the roller blind. The purpose of winding the pull cord 2 can be achieved by the rope reeling mechanism 4, so that the pull cord 2 does not need to be placed on the windowsill, thereby reducing the probability of the windowsill being messy, which can not only improve the quality of the installation and use of the roller blind, but also facilitate the user to clean and maintain. And this can avoid the situation that the pull cord 2 is entangled and knotted, so that it is convenient for the user to use. Through the joint action of the guide wheel 5, the pull cord 2, the fixed seat 3 and the rope reeling mechanism 4, the purpose of limiting the lower end of the roller blind 1 can be achieved, so that when the wind force acts on the roller blind 1, the shaking amplitude of the lower end of the roller blind 1 can be reduced, which can reduce the strength of the curtain collision, thereby achieving the purpose of reducing noise, and then reducing the impact on the user's rest. It is particularly suitable for use in a ship environment where there is both wind force and overall shaking, which can help to provide a better rest environment for the crew.

[0023] like Figure 1 As shown, there are two guide wheels 5, which are respectively arranged on the left and right corners of the lower end of the rolling curtain 1, and the pull cord 2 is wound around the two guide wheels 5. This not only helps to limit the left and right corners of the lower end of the rolling curtain 1, but also makes the rolling curtain pull cord retracting and releasing device have a simple structure, which can improve the reliability of the rolling curtain pull cord retracting and releasing device while facilitating manufacturing.

[0024] like Figure 1 As shown, the rolling curtain 1 includes a curtain 11 and a positioning crossbar 12, wherein the positioning crossbar 12 is arranged on the lower end of the curtain 11, and the guide wheel 5 is arranged on the positioning crossbar 12. The positioning crossbar 12 can not only enhance the structural strength of the lower end of the curtain 11, but also enable the curtain 11 to be accurately and stably unfolded, thereby avoiding curling and bending at the lower end of the curtain 11, which can enhance the straightness of the drooping curtain 11, thereby improving the quality of the use of the rolling curtain 1. The positioning crossbar 12 can also provide a reliable installation position for the guide wheel 5, which can help improve the stability and reliability of the installation and positioning of the guide wheel 5, thereby helping to further improve the applicability of the rolling curtain pull cord retracting device.

[0025] The curtain 11 is a sun fabric or a sun film, which can make the sunshade effect of the roller curtain 1 very good, thereby helping to further improve the applicability of the roller curtain pull cord retracting and releasing device.

[0026] like Figure 1 As shown, a guide wheel 6 is arranged between the rope winding mechanism 4 and the guide wheel 5, and the pull rope 2 is wound around the guide wheel 6. The guide wheel 5 can be arranged to change the direction of the end of the pull rope 2, which can help the rope winding mechanism 4 have more installation positions, so as to meet more usage requirements, thereby helping to further improve the applicability of the roller blind pull rope retracting and releasing device.

[0027] like Figure 1 As shown, when two guide wheels 5 are used, the two guide wheels 5 are respectively located on the left and right ends of the positioning cross bar 12, the fixing seat 3 and the guide wheel 6 are respectively located directly below the two guide wheels 5, and the rope winding mechanism 4 is located below the side of the rolling curtain 1. This not only helps the pull rope 2 to stably limit the lower end of the rolling curtain 1, but also makes the pull rope 2 pull the rolling curtain 1 very stably and accurately, thereby ensuring that the lifting and lowering of the rolling curtain 1 is very stable and accurate, which helps to further improve the performance of the rolling curtain pull rope retracting device.

[0028] like Figure 1 and Figure 2 As shown, the rope winding mechanism 4 is a rope winding mechanism with a self-locking function. In this way, the rope winding mechanism 4 can be prevented from rotating freely, thereby improving the stability of the rope winding mechanism 4, and further enhancing the limiting effect of the pull cord 2 on the lower end of the rolling curtain 1, which helps to further improve the reliability and applicability of the rolling curtain pull cord retracting and releasing device.

[0029] like Figure 1 and Figure 2 As shown, the rope winding mechanism 4 includes a positioning seat 41 and a reel 42, wherein the reel 42 is rotatably arranged on the positioning seat 41, and the other end of the pull rope 2 is fixed on the reel 42, so that the reel 42 can reel the pull rope 2. Such a rope winding mechanism 4 is very simple and reliable, so that the pull rope 2 can be reeled in conveniently, which helps to further improve the applicability of the roller blind pull rope retracting and releasing device.

[0030] like Figure 2 As shown, a winding ring groove 421 is provided on the outer circumferential surface of the winding wheel 42, and the winding ring groove 421 can wind up the draw cord 2. The winding ring groove 421 can limit the winding draw cord, so that the winding of the draw cord 2 can be more stable and accurate, which helps to further improve the reliability and applicability of the roller blind draw cord retracting and releasing device.

[0031] like Figure 2As shown, the positioning seat 41 is provided with an elastic stopper 43, and the elastic stopper 43 is elastically acted on the winding wheel 42, so as to limit the rotation of the winding wheel 42 through the elasticity of the elastic stopper 43. The elastic stopper 43 is used to limit the rotation of the winding wheel 42, which can not only meet the normal winding demand of the rope winding mechanism 4, but also achieve the purpose of self-locking, and can constitute a rope winding mechanism with a self-locking function, which can prevent the rope winding mechanism 4 from rotating freely, so that the rope winding mechanism 4 has a very high stability, and then the pull cord 2 can be kept in a very stable state, which can make the pull cord 2 have a very good limiting effect on the lower end of the rolling curtain 1, which helps to further improve the reliability and applicability of the rolling curtain pull cord retracting device.

[0032] In the actual manufacturing process, the elastic limiter 43 can adopt the following structures: the first structure, the elastic limiter 43 is an arc-shaped spring piece, one end of the arc-shaped spring piece is fixed on the positioning seat 41, and the middle part of the arc-shaped spring piece is elastically pressed on the end surface of the winding wheel 42; the second structure, the elastic limiter 43 includes a spring and a steel ball, and a positioning groove with a notch smaller than the major diameter of the steel ball is opened on the fixing seat 3. The spring and the steel ball are arranged in the positioning groove in sequence, and the two ends of the spring are elastically pressed on the bottom of the positioning groove and the steel ball respectively. In the third structure, the elastic limiter 43 is an elastic block (such as an elastic plastic block, an elastic rubber block or an elastic silicone block, etc.), and the elastic block is elastically pressed against the end face of the winding wheel 42; in this way, the elastic limiter 43 can have the function of elastic limiting, thereby achieving the purpose of self-locking, and then a very stable and reliable rope winding mechanism with self-locking function can be formed.

[0033] like Figure 2 As shown, an embedding head 422 for rotational connection is provided on the end surface of the winding wheel 42, the outer end of the embedding head 422 is large and the inner end is small, and the winding wheel 42 is rotatably embedded on the positioning seat 41 through the embedding head 422. This helps to improve the stability and reliability of the installation and positioning of the winding wheel 42, thereby helping to further improve the reliability of the rope winding mechanism 4. The elastic limiter 43 can be changed to elastically act on the embedding head 422, which can also serve the purpose of limiting the rotation of the winding wheel 42.

[0034] like Figure 2 As shown, a rotating handle 44 is provided on the winding wheel 42. This can facilitate the rotation of the winding wheel 42, thereby helping to improve the convenience of winding the pull cord 2, and further helping to further improve the applicability of the roller blind pull cord retracting and releasing device.

[0035] like Figure 1As shown, in actual use, the upper end of the curtain 11 is fixedly wound on the automatic rolling mechanism 10, and the automatic rolling mechanism 10 adopts an existing structure, such as the automatic rolling mechanism of an electric roller blind, so as to meet the actual use requirements.

[0036] The above embodiments are preferred embodiments of the present utility model. All structures similar to the present utility model and equivalent changes made thereto should fall within the protection scope of the present utility model.

Claims

1. A roller blind cord retracting and releasing device, characterized in that: The invention comprises a rolling curtain (1), a pull rope (2), a fixing seat (3), and a rope winding mechanism (4), wherein the fixing seat (3) and the rope winding mechanism (4) are both arranged below the rolling curtain (1), at least one guide wheel (5) is provided at the lower end of the rolling curtain (1), one end of the pull rope (2) is fixed on the fixing seat (3), and the other end of the pull rope (2) is wound around the guide wheel (5) and then wound around the rope winding mechanism (4), so that the rope winding mechanism (4) can perform the action of winding up the pull rope (2).

2. The roller blind cord retracting and releasing device according to claim 1, characterized in that: There are two guide wheels (5), which are respectively arranged on the left and right corners of the lower end of the rolling curtain (1), and the pull rope (2) is wound around the two guide wheels (5).

3. The roller blind cord retracting and releasing device according to claim 1 or 2, characterized in that: The rolling curtain (1) comprises a curtain (11) and a positioning crossbar (12), wherein the positioning crossbar (12) is arranged on the lower end of the curtain (11), and the guide wheel (5) is arranged on the positioning crossbar (12).

4. The roller blind cord retracting and releasing device according to claim 3, characterized in that: The curtain (11) is a sunlight fabric or a sunlight film.

5. The roller blind cord retracting and releasing device according to claim 1, characterized in that: A guide wheel (6) is arranged between the rope winding mechanism (4) and the guide wheel (5), and the pull rope (2) is wound around the guide wheel (6).

6. The roller blind cord retracting and releasing device according to claim 1, characterized in that: The rope winding mechanism (4) is a rope winding mechanism with a self-locking function.

7. The roller blind cord retracting and releasing device according to claim 1, characterized in that: The rope winding mechanism (4) comprises a positioning seat (41) and a winding wheel (42). The winding wheel (42) is rotatably arranged on the positioning seat (41). The other end of the pull rope (2) is fixed on the winding wheel (42), and the winding wheel (42) can wind up the pull rope (2).

8. The roller blind cord retracting and releasing device according to claim 7, characterized in that: A winding ring groove (421) is provided on the outer circumferential surface of the winding wheel (42), and the winding ring groove (421) can be used to wind up the draw cord (2).

9. The roller blind cord retracting and releasing device according to claim 7, characterized in that: An elastic limiter (43) is arranged on the positioning seat (41), and the elastic limiter (43) elastically acts on the winding wheel (42) to limit the rotation of the winding wheel (42) through the elasticity of the elastic limiter (43).

10. The roller blind cord retracting and releasing device according to claim 7, characterized in that: The winding wheel (42) is provided with a rotating handle (44).

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