Cord length adjuster

Abstract

The utility model discloses a cord length regulator, and particularly relates to the technical field of length regulators, the cord length regulator comprises a shell, a handle penetrates through the shell, the front end of the handle penetrates through the front of the shell, a plane ratchet wheel is fixedly sleeved on the handle, and a tooth groove meshed with the plane ratchet wheel is processed on the inner wall of the front end of the shell. A threading hole is formed in one side of the handle, round holes corresponding to the threading hole are formed in the two sides of the shell, a round plate is clamped in the shell, and a reset spring is connected between the front end of the round plate and the rear end of the handle. The rotating part is held by hand to drive the winding part to rotate to wind and release the rope, the plane ratchet wheel is meshed with the tooth grooves in the inner wall of the shell, the rope can be tightened by rotating the handle clockwise, and the rope can be released by rotating the handle anticlockwise, so that the Roman shade is convenient to adjust, and no tool is needed. And the length of the rope can be manually adjusted, so that the use is very convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to length adjuster technical field, more specifically, a kind of string length adjuster. BACKGROUND

[0002] Rope of Roman curtain back is used to lift and lower the curtain. Currently, the length of the string is usually adjusted manually, which may have a large error in the length direction, because Roman curtain needs at least two or more adjusters, and the length of the string may cause unevenness.

[0003] Although the existing adjuster can achieve the adjusting effect, it still needs to manually twist the adjuster with a screwdriver when winding or unwinding the string, which is very inconvenient to operate. Therefore, the utility model provides a string length adjuster which is convenient to operate. UTILITY MODEL CONTENT

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a string length adjuster, which rotates the winding part to wind or unwind the string by hand, and engages the flat ratchet with the tooth groove on the inner wall of the shell. Clockwise rotation of the handle can tighten the string, and counterclockwise rotation of the handle can unwind the string, which is convenient for adjusting the Roman curtain and manually adjusting the length of the string without the aid of any tool, which is very convenient to use, so as to solve the problems in the above-mentioned background art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a string length adjuster, comprising a shell, a handle is penetrated through the inside of the shell, and the front end of the handle is penetrated through the front of the shell. A flat ratchet is fixedly sleeved on the handle, a tooth groove engaged with the flat ratchet is processed on the inner wall of the front end of the shell, a threading hole is formed on one side of the handle, circular holes corresponding to the threading hole are formed on both sides of the shell, a circular plate is clamped in the inside of the shell, and a return spring is connected between the front end of the circular plate and the rear end of the handle.

[0006] In a preferred embodiment, a circular groove is formed on the rear end of the handle, and one end of the return spring away from the circular plate is rotationally connected with the circular groove. The circular groove can limit the return spring and avoid damage caused by rotation of the return spring with the handle.

[0007] In a preferred embodiment, a clamping block is processed on the circular plate, clamping grooves are formed on the outer walls of both sides of the shell, and the clamping block is clamped with the clamping groove. The circular plate is fixed by clamping, and the circular plate and the handle can be taken out of the shell by pushing the clamping block out of the clamping groove, which is convenient for fixing the string and replacing the handle.

[0008] In a preferred embodiment, the handle comprises a winding part and a handheld rotating part, the threading hole is arranged on the winding part, and the front end of the handheld rotating part penetrates the front of the shell, facilitating the user to wind and unwind the rope.

[0009] In a preferred embodiment, the outer wall surface of the handheld rotating part is processed with a plurality of anti-skid grooves, which are arranged in a ring array on the outer wall surface of the handheld rotating part, for increasing the friction of the surface of the handheld rotating part and enabling the handheld rotating part to rotate more stably.

[0010] In a preferred embodiment, the front end of the shell is fixedly provided with a ring plate, the handheld rotating part penetrates the ring plate, and a plurality of marking strips are fixedly arranged on the outer wall of the front end of the ring plate and arranged in a ring array on the front end of the ring plate, one marking strip located at the top center of the front end of the ring plate is coated with blue paint, and the blue paint can make the marking strip more conspicuous, thereby facilitating the user to check.

[0011] In a preferred embodiment, a red vertical plate is fixedly arranged at the top end of the handheld rotating part and located in front of the ring plate, and the number of rotations of the handheld rotating part can be obtained by observing the number of the red vertical plate, thereby facilitating the user to better adjust the length of the rope.

[0012] In a preferred embodiment, a pawl is fixedly arranged at the rear end of the circular plate, and the entire adjuster can be clamped on the Roman curtain rod by using the pawl.

[0013] The technical effects and advantages of the present utility model are as follows:

[0014] 1. The handheld rotating part drives the winding part to rotate to wind and unwind the rope, the plane ratchet is engaged with the tooth groove on the inner wall of the shell, the handle can be rotated clockwise to tighten the rope and counterclockwise to unwind the rope, thereby facilitating the adjustment of the Roman curtain, and the length of the rope can be manually adjusted without any tool, which is very convenient to use.

[0015] 2. The red vertical plate and the marking strip coated with blue paint cooperate to facilitate the user to record the number of rotations of the handle, and the position of the marking strip pointed by the red vertical plate facilitates the user to synchronously and quickly adjust the two adjusters of the Roman curtain, thereby improving the flatness of the adjusted Roman curtain. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a sectional view of the shell of the present utility model;

[0018] Figure 3 It is a sectional view of the shell of the present utility model;

[0019] Figure 4 This is a structural diagram of the winding part and the handheld rotating part of the utility model;

[0020] Figure 5 It is a cross-sectional view of the shell of the present utility model.

[0021] The accompanying drawings are marked as follows: 1, housing; 2, handle; 3, flat ratchet; 4, tooth groove; 5, threading hole; 6, round hole; 7, round plate; 8, return spring; 9, round groove; 10, clamping block; 11, clamping groove; 12, anti-slip groove; 13, ring plate; 14, marking strip; 15, red vertical plate; 16, claw;

[0022] 201. Winding unit; 202. Handheld rotating unit. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Refer to the instruction manual Figures 1-5 The present invention provides a cord length adjuster, comprising a housing 1, wherein a handle 2 is provided inside the housing 1, and the front end of the handle 2 passes through the front of the housing 1. Specifically, the handle 2 comprises a winding portion 201 and a handheld rotating portion 202, the threading hole 5 is provided on the winding portion 201, and the front end of the handheld rotating portion 202 passes through the front of the housing 1, so as to facilitate the user to wind up and release the cord;

[0025] A flat ratchet 3 is fixedly sleeved on the handle 2, and a tooth groove 4 is machined on the inner wall of the front end of the housing 1 to engage with the flat ratchet 3. A threading hole 5 is opened on one side of the handle 2, and circular holes 6 corresponding to the threading holes 5 are opened on both sides of the housing 1. A circular plate 7 is clamped inside the housing 1, and a claw 16 is fixed on the rear end of the circular plate 7. The claw 16 can be used to clamp the entire adjuster on the Roman curtain rod for use;

[0026] A return spring 8 is connected between the front end of the circular plate 7 and the rear end of the handle 2. Specifically, the return spring 8 is an elastic element that can restore the mechanical parts to their initial positions. When the hand-held rotating part 202 is pushed, the winding part 201 squeezes the return spring 8 to contract and store elastic potential energy. When the hand-held rotating part 202 is released, the return spring 8 releases the stored elastic potential energy, thereby automatically pushing the winding part 201 to return to its original position.

[0027] And, the handle 2 rear end is provided with a circular groove 9, and one end of the reset spring 8 away from the circular plate 7 is rotationally connected with the circular groove 9, and the reset spring 8 can be limited by the circular groove 9, and meanwhile, the reset spring 8 is prevented from rotating with the handle 2 and being damaged;

[0028] Moreover, the circular plate 7 is processed with a clamping block 10, the shell 1 both sides outer wall is provided with a clamping groove 11, the clamping block 10 is clamped with the clamping groove 11, and the circular plate 7 is fixed by clamping, and the circular plate 7 and the handle 2 can be taken out from the shell 1 by pushing the clamping block 10 out of the clamping groove 11, so that the fixing rope is convenient, and the handle 2 is replaced;

[0029] The outer wall surface of the handheld rotating part 202 is processed with a plurality of anti-skid grooves 12, and the plurality of anti-skid grooves 12 are arranged in a ring shape on the outer wall surface of the handheld rotating part 202, so as to increase the friction of the surface of the handheld rotating part 202, and the handheld rotating part 202 can be more stably rotated.

[0030] In use, one end of the rope of the Roman curtain is sequentially threaded through the circular hole 6 and the threading hole 5, and is knotted, and then the clamping jaw 16 is clamped on the Roman curtain rod, so that the height of the Roman curtain can be adjusted by rotating the handheld rotating part 202 clockwise, and the handheld rotating part 202 drives the winding part 201 to normally rotate, so that the rope is wound on the winding part 201, and when the handheld rotating part 202 is counterclockwise rotated, the handheld rotating part 202 cannot normally rotate due to the meshing of the planar ratchet wheel 3 and the tooth groove 4, so that the adjuster is prevented from loosening and sagging under the action of gravity after a long time, and when the Roman curtain needs to be lowered, the user can push the handheld rotating part 202 along the axis to separate the planar ratchet wheel 3 from the tooth groove 4 on the inner wall of the shell 1, and then the handheld rotating part 202 is counterclockwise rotated, so that the rope is loosened from the winding part 201, and the Roman curtain is lowered by adjusting the length of the rope. The handle 2 and the spring are matched in the embodiment, and any tool is not needed, so that the length of the rope can be manually adjusted, and the use is very convenient.

[0031] Referring to the drawings accompanying the specification Figures 1-5 The front end of the shell 1 is fixedly provided with a ring plate 13, the handheld rotating part 202 penetrates through the ring plate 13, a plurality of mark strips 14 are fixedly arranged on the outer wall of the front end of the ring plate 13, and the plurality of mark strips 14 are arranged in a ring shape on the front end of the ring plate 13, and one mark strip 14 on the top center of the front end of the ring plate 13 is coated with blue paint, so as to make the mark strip 14 more prominent.

[0032] The top end of the handheld rotating part 202 is fixedly provided with a red vertical plate 15, and the red vertical plate 15 is arranged in front of the ring plate 13.

[0033] By setting the red vertical plate 15 on the handheld rotating part 202, the user drives the red vertical plate 15 to rotate together when rotating the handheld rotating part 202, and the red vertical plate 15 passes in front of the mark strip 14 coated with blue paint every time the handheld rotating part 202 rotates one round, so that the user can know the number of rotations of the handheld rotating part 202 by observing the number of red vertical plate 15, and the red vertical plate 15 cooperates with the plurality of mark strips 14 to adjust two wire ropes on the roman shade at the same time, and the staff can make the adjustment of the two adjusters consistent through the position of the red vertical plate 15 and the mark strip 14, thereby improving the flatness of the adjusted roman shade.

[0034] Finally: the above only for the preferred embodiments of the present application have, and not for limiting the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included within the scope of the present application.

Claims

1. A cord length adjuster characterized by: Including shell (1), the handle (2) is through in the shell (1) inside, and the handle (2) front end is through the front of shell (1), the handle (2) is fixed with the planar ratchet wheel (3) of setting, the shell (1) front end inner wall is processed with the tooth groove (4) of being engaged with planar ratchet wheel (3); The handle (2) one side is provided with threading hole (5), the shell (1) both sides are provided with the round hole (6) corresponding with threading hole (5), the shell (1) inside is clamped with round plate (7), and the round plate (7) front end is connected with the rear end of handle (2) between reset spring (8).

2. A cord length adjuster according to claim 1, characterized in that: The handle (2) rear end is provided with circular groove (9), and the end of reset spring (8) away from round plate (7) is rotatably connected with circular groove (9).

3. A cord length adjuster according to claim 1, wherein: The round plate (7) is processed with clamping block (10), the shell (1) both sides outer walls are provided with clamping groove (11), and clamping block (10) is clamped with clamping groove (11).

4. A cord length adjuster according to claim 1, characterized in that: The handle (2) includes winding part (201) and handheld rotating part (202), the threading hole (5) is provided on winding part (201), and the handheld rotating part (202) front end is through the front of shell (1).

5. A cord length adjuster according to claim 4, wherein: The outer wall surface of handheld rotating part (202) is processed with a plurality of anti-skid grooves (12), and a plurality of anti-skid grooves (12) are arranged in annular array on the outer wall of handheld rotating part (202).

6. A cord length adjuster according to claim 4, wherein: The shell (1) front end is fixedly provided with ring plate (13), the handheld rotating part (202) is through ring plate (13), and the ring plate (13) front end outer wall is fixedly provided with a plurality of marking strips (14), a plurality of marking strips (14) are arranged in annular array on the front end of ring plate (13), and one marking strip (14) surface is smeared with blue paint on the front end top center of ring plate (13).

7. A cord length adjuster according to claim 6, wherein: The handheld rotating part (202) top end is fixedly provided with red vertical plate (15), and the red vertical plate (15) is arranged in front of ring plate (13).

8. A cord length adjuster according to claim 1, characterized in that: The round plate (7) rear end is fixedly provided with clamping jaw (16).

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