Rope winder

Abstract

According to the technical scheme, the rope winder is characterized by comprising a base and a rope winding drum matched with the base in a rotating mode, an extending cylindrical section is arranged at one end of the rope winding drum, a fixed wheel is arranged on the cylindrical section in a sleeved mode, a rotating groove is formed in the end, corresponding to the cylindrical section, of the base, and the cylindrical section is matched with the rotating groove in a rotating mode. According to the utility model, the internal structure is optimized, so that the internal rope winding drum does not deviate after long-time rotation, the rotation is smooth, and the service life is longer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of curtain accessories, more specifically, it relates to a rope winding device. BACKGROUND

[0002] The rope winding device is applied to a curtain, especially a louver curtain, and is used for controlling the winding and unwinding of a pull rope.

[0003] In the prior art, the right end cover is the winding starting position of the rope, so that the right end cover side is subjected to a large force during the winding of the rope, and after long-term use, the split structure causes the right end cover and the shaft to be misaligned, which causes the shaft to deviate during rotation, and the rotation is not smooth, affecting normal use. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a rope winding device, which optimizes the internal structure so that the winding drum does not deviate after long-term rotation, the rotation is smooth, and the service life is longer.

[0005] To achieve the above object, the utility model provides the following technical scheme: a rope winding device, comprising a base and a winding drum in rotational cooperation with the base, one end of the winding drum is provided with an extended cylindrical segment, a fixed wheel is sleeved on the cylindrical segment, the base is provided with a rotating groove corresponding to one end of the cylindrical segment, and the cylindrical segment and the rotating groove are in rotational cooperation.

[0006] The utility model is further provided as follows: the cylindrical segment and the winding drum are integrally arranged.

[0007] The utility model is further provided as follows: the diameter of the cylindrical segment is smaller than the diameter of the winding drum.

[0008] The utility model is further provided as follows: the winding drum is provided with a rope clamping groove at one end close to the cylindrical segment, and the rope clamping groove is provided as a V-shaped notch structure.

[0009] The utility model is further provided as follows: the connection part of the winding drum and the cylindrical segment is provided with a bayonet, the fixed wheel is provided with a clamping part, and the clamping part and the bayonet are in clamping cooperation.

[0010] The utility model is further provided as follows: the rotating groove is provided with a protruding limiting part, and the limiting part is used for limiting the cylindrical segment.

[0011] The utility model further sets up: the protruding structure of limit portion is high in the middle and low on both sides, and limit portion is symmetrically arranged at both sides of rotary groove.

[0012] The utility model further sets up: square hole is provided in the axial direction of cylindrical section, and the square hole is used for connecting with the transmission rod outside.

[0013] The utility model further sets up: the other end of rope winding drum is provided with the wheel shaft of circumferential fixation, and the wheel shaft is rotatably connected with the base.

[0014] The utility model further sets up: one end of rope winding drum and wheel shaft cooperation is provided with the expansion section of diameter big and flared mouth structure.

[0015] Summarized above, the utility model has following beneficial effect:

[0016] Compared with prior art, the utility model sets up the cylindrical section of integral structure with rope winding drum, and the cylindrical section directly passes through fixed wheel rotatable connection on the base, and the cylindrical section is arranged at the position of rope winding starting end, because the cylindrical section is integrally formed with rope winding drum, therefore structural strength is high, can still guarantee the smooth rotation of rope winding drum after long time bearing the force of rope winding, has long service life. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is external structure schematic diagram.

[0018] Figure 2 It is cylindrical section and fixed wheel separation structure schematic diagram.

[0019] Figure 3 It is cross section structure schematic diagram.

[0020] Figure 4 It is rotary groove structure schematic diagram.

[0021] Fig. 1, base;101, rotary groove;2, rope winding drum;201, cylindrical section;3, fixed wheel;301, clamping portion;4, bayonet;5, rope clamping groove;6, limit portion;7, square hole;8, wheel shaft;9, expansion section. DETAILED DESCRIPTION

[0022] The utility model will be further explained in detail in connection with the drawings.

[0023] The embodiment discloses a rope winding device, like Figures 1-4As shown, including the base 1 and the base 1 with the winding rope drum 2, one end of the winding rope drum 2 is provided with an extended cylindrical segment 201, the diameter of the cylindrical segment 201 is smaller than the diameter of the winding rope drum 2, the cylindrical segment 201 is sleeved with the fixed wheel 3, the base 1 is provided with a rotating groove 101 corresponding to one end of the cylindrical segment 201, and the cylindrical segment 201 is rotatably connected with the rotating groove 101. Combined with the drawings Figure 1 When the winding rope drum 2 is wound around the curtain pull rope, it starts from one side of the cylindrical segment 201, and when the pull rope is retracted, the starting side will be subjected to a larger external force. The traditional winding rope structure is to first connect the winding rope drum 2 with the fixed wheel, and then connect the fixed wheel with the rotating groove. When subjected to a large external force for a long time, the cooperation is prone to deviation, resulting in poor rotation. Therefore, the cylindrical segment 201 is directly extended on the winding rope drum 2, and the rotating groove 101 of the base 1 is matched, so that the structure of the winding rope drum 2 is more stable.

[0024] Further, in order to improve the structural stability, the cylindrical segment 201 is integrally arranged with the winding rope drum 2.

[0025] Further, the winding rope drum 2 is provided with a rope clamping groove 5 at one end close to the cylindrical segment 201, and the rope clamping groove 5 is provided in a V-shaped notch structure. The fixed wheel 3 is connected with the pull rope head, and then wound out from the rope clamping groove 5, so that the pull rope can be well fixed to avoid loosening during winding.

[0026] Further, the connecting part of the winding rope drum 2 and the cylindrical segment 201 is provided with a bayonet 4, and the fixed wheel 3 is provided with a clamping part 301, which is clamped and matched with the bayonet 4. The bayonet 4 is provided as a notch, and the clamping part 301 is clamped therein to form a circumferential fixing and an axial fixing, so as to ensure stable connection.

[0027] Further, the rotating groove 101 is provided with a protruding limiting part 6, which is used for limiting the cylindrical segment 201. The limiting part 6 is provided to ensure that the cylindrical segment 201 will not come out of the rotating groove 101 during rotation. At the same time, in order to ensure the balance of force, the limiting parts 6 are symmetrically arranged on both sides of the rotating groove 101, and in order to ensure the convenience of installation and disassembly, the protruding structure of the limiting part 6 is high in the middle and low on both sides.

[0028] Further, a square hole 7 is arranged in the axial direction of the cylindrical segment 201, which is used for connecting with the external transmission rod. The square hole 7 is used for circumferential fixed connection with the external transmission rod to realize the transmission of torque.

[0029] Further, the other end of the winding rope drum 2 is provided with a circumferential fixed wheel shaft 8, for example, an axial clamping groove is arranged in the winding rope drum, a protruding clamping part is arranged on the wheel shaft 8, the wheel shaft 8 is rotatably connected with the base 1, the wheel shaft 8 is used for rotatably supporting the other end of the winding rope drum 2, and the wheel shaft 8 is also provided with a square hole. The transmission rod 7 penetrates through the winding rope drum 2 at both ends.

[0030] Further, the end of the winding rope drum 2 matched with the wheel shaft 8 is provided with an expansion section 9 with a trumpet-shaped structure with a larger diameter. Through the setting of the expansion section 9, the pull rope is allowed to slide down the expansion section during winding, so as to avoid winding of the pull rope to the outside of the expansion section 9, thereby preventing the rope from being stuck.

[0031] The above is only the preferred embodiment of the present application, and is not used for limiting the present application, and any modification, equivalent replacement, improvement, etc. made within the design concept of the present application shall be included in the protection scope of the present application.

Claims

1. A rope winder, comprising a base (1) and a rope drum (2) rotatably engaged with the base (1), characterized in that: One end of the rope drum (2) is provided with an extended cylindrical section (201), and a fixed wheel (3) is fitted on the cylindrical section (201). The base (1) is provided with a rotating groove (101) corresponding to one end of the cylindrical section (201), and the cylindrical section (201) and the rotating groove (101) are rotatably engaged.

2. A rope winder according to claim 1, characterized in that: The cylindrical section (201) is integrally formed with the rope drum (2).

3. A rope winder according to claim 1 or 2, characterized in that: The diameter of the cylindrical section (201) is smaller than the diameter of the rope drum (2).

4. A rope winder according to claim 1, characterized in that: The rope drum (2) has a rope-locking groove (5) at one end near the cylindrical section (201), and the rope-locking groove (5) is configured as a V-shaped notch structure.

5. A rope winder according to claim 1, characterized in that: The connection between the rope drum (2) and the cylindrical section (201) is provided with a bayonet (4), and the fixed wheel (3) is provided with a snap-fit ​​part (301), which engages with the bayonet (4).

6. A rope winder according to claim 1, characterized in that: The rotating groove (101) is provided with a protruding limiting part (6), which is used to limit the cylindrical section (201).

7. A rope winder according to claim 6, characterized in that: The limiting part (6) is symmetrically arranged on both sides of the rotating groove (101), and the protruding structure of the limiting part (6) is high in the middle and low on both sides.

8. A rope winder according to claim 1, characterized in that: The cylindrical section (201) has a square hole (7) in the axial direction, which is used to connect with an external transmission rod.

9. A rope winder according to claim 1, characterized in that: The other end of the rope drum (2) is fitted with a circumferentially fixed axle (8), which is rotatably connected to the base (1).

10. A rope winder according to claim 9, characterized in that: The end of the rope drum (2) that mates with the axle (8) is provided with an expansion section (9) with a larger diameter and a trumpet-shaped structure.

Images