CN215859904U

CN215859904U - Venetian blind and rope locking device thereof

Info

Publication number: CN215859904U
Application number: CN202121471253.9U
Authority: CN
Inventors: 谭志华
Original assignee: Hunan Jiahonghua Smart Home Co ltd
Current assignee: Hunan Jiahonghua Smart Home Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-02-18
Anticipated expiration: 2031-06-30

Abstract

The utility model provides a blind and a rope locking device thereof, wherein the rope locking device comprises a mounting plate, a first fixed pulley for guiding a pull rope is fixed on the mounting plate, a shaft seat is also fixed on the mounting plate, and a rope locking mechanism is installed on the shaft seat; the rope locking mechanism comprises a pressure head, a connecting shaft connected with the pressure head and a first spring sleeved on the connecting shaft, and the connecting shaft is arranged in the shaft seat in a sliding manner; a cambered surface groove is formed in a second surface, facing the first fixed pulley, of the pressure head, and the pressure head can enable the pull rope to be tightly pressed on the peripheral surface of the first fixed pulley under the tension action of the first spring; the pull rope pressing device is connected with the free end of the connecting shaft and used for controlling the pressing head to press or loosen the pull rope. The blind window curtain adopts the rope locking device to lock the rope. The pressure head compresses the pull rope through the elastic force of the first spring on the rope locking mechanism, the traction device controls the pressure head to compress or release the pull rope, the pressing force of the rope locking device on the pull rope is adjustable, and rope locking is reliable.

Description

Venetian blind and rope locking device thereof

Technical Field

The utility model relates to the technical field of shutter curtains, in particular to a shutter curtain and a rope locking device thereof.

Background

The existing venetian blinds usually comprise a plurality of pull ropes connected with the venetian blind blades, the telescopic pull ropes are used for enabling the blades to be integrally folded or put down, and the pull ropes are guided by fixed pulleys and realize the locking of the venetian blind at any lifting position by a rope locking device.

The rope locking device in the prior art comprises a mounting plate, wherein a fixed pulley is arranged on the mounting plate, a sliding groove is formed in one side of the fixed pulley, a locking shaft is arranged in the sliding groove, a pull rope can move between the locking shaft and the fixed pulley, the locking shaft can be driven to move upwards to the top end of the sliding groove when the pull rope is pulled towards one side of a positioning shaft, and the locking shaft can compress the pull rope at the moment so as to lock the pull rope; when the pull rope is pulled towards the other side, the locking shaft can be driven to move downwards to the bottom end of the sliding groove, so that the pull rope is loosened.

However, in the prior art, the locking shaft moves the locking rope in the sliding groove, and when the rope drives the locking shaft to move incompletely, or the friction force between the rope and the locking shaft is insufficient, or the pressing force between the locking shaft and the rope is insufficient, the locking of the rope cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model provides a blind and a rope locking device thereof, which can realize locking rapidly and are reliable in rope locking through a novel locking structure.

In order to solve the problems, the utility model provides a rope locking device which comprises a mounting plate, wherein a first fixed pulley for guiding a pull rope is fixed on the mounting plate;

the rope locking mechanism comprises a pressure head, a connecting shaft connected with a first surface of the pressure head and a first spring sleeved on the connecting shaft, the free end of the connecting shaft penetrates through the shaft seat and is arranged in the shaft seat in a sliding manner, and two ends of the first spring are respectively fixed on the shaft seat and the pressure head;

a cambered surface groove is formed in a second surface, facing the first fixed pulley, of the pressure head, the inner cambered surface of the cambered surface groove is matched with the cambered surface of the outer peripheral surface of the first fixed pulley, and the pressure head can enable the pull rope to be tightly pressed on the outer peripheral surface of the first fixed pulley under the tension action of the first spring;

the pull rope pressing device is fixed on the outer frame, connected with the free end of the connecting shaft and used for controlling the pressing head to press or loosen the pull rope.

In a possible embodiment, the central axis of the connecting shaft extends in a radial direction of the first fixed pulley.

In a possible embodiment, the free end of the connecting shaft is provided with a stop.

In one possible embodiment, the traction device includes a housing, a traction rope, a drum, and a handle secured to a first end of the drum;

a second fixed pulley is arranged on the mounting plate near the free end of the connecting shaft, the first end of the traction rope is connected to the free end of the connecting shaft, the traction rope is guided by the second fixed pulley and then wound on the rotary drum, and the second end of the traction rope is fixed on the rotary drum;

the rotary drum is accommodated in a shell, an installation shaft is fixed in the shell, an installation hole is formed in the second end of the rotary drum, the rotary drum is sleeved on the installation shaft, and the rocking handle is arranged on the first surface of the shell;

a gear button is further arranged on the first surface of the shell; when the drum rotates for a set angle in a first direction for tensioning the pull rope, the gear button can block the crank from rotating in the reverse direction of the first direction.

In a possible embodiment, the gear button comprises a pressing portion and a stopper portion, and the pressing portion is arranged on one side of the stopper portion; a second spring is connected to the lower surface of the stop block part; the shell is provided with a sliding groove below the stop block part, the bottom of the second spring is fixed at the bottom of the sliding groove, and the pressing part can move up and down along the extending direction of the sliding groove; when the pressing portion is pressed down, the stopper portion can be accommodated in the chute.

In a possible embodiment, the stopper portion is provided with a slope for sliding from the bottom to the top of the rocking handle when the rocking handle rotates so that the stopper portion is received in the sliding groove.

The utility model provides a rope locking device which comprises a rope locking mechanism arranged on an installation plate, wherein a pressure head is enabled to press a pull rope under the elastic force action of a first spring on the rope locking mechanism, the pressing or loosening action of the pressure head is controlled by taking a traction device as a control switch, the pressing force of the rope locking device on the pull rope is adjustable, the rope locking is reliable, and the failure rate is low.

The utility model also provides a blind window curtain which comprises the rope locking device. Through adopting foretell lock rope ware, can realize fast through draw gear that lock rope ware locks or loosen the stay cord, easy operation, convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a deadlocking mechanism according to an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of the draft gear A of FIG. 1;

FIG. 3 is a schematic diagram of a button structure according to an embodiment of the present invention;

fig. 4 is a front view of a blind according to another embodiment of the present invention.

Description of reference numerals: 100. mounting a box; 200. a rope locking device; 210. mounting a plate; 211. a first fixed pulley; 212. a shaft seat; 213. a second fixed pulley; 214. a guide post; 220. a rope locking mechanism; 221. a pressure head; 222. a connecting shaft; 223. a first spring; 224. a baffle plate; 230. a traction device; 231. a hauling rope; 232. a rocking handle; 233. a rotating drum; 234. a housing; 235. a gear button; 201. a bevel; 202. a stopper part; 203. a pressing part; 236. a limiting block; 237. a second spring; 238. a chute; 300. pulling a rope; 400. an angle adjusting rope; 500. a blade; 600. an outer frame.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Example one

Referring to fig. 1 to 3, the present embodiment provides a cord lock, which includes a mounting plate 210, wherein the mounting plate 210 is mounted in a mounting box 100 of a top of a window blind by a fastener such as a bolt, and a first fixed pulley 211 is fixed on the mounting plate 210, and the first fixed pulley 211 is used for guiding a pull cord 300. A shaft seat 212 is further disposed on the mounting plate 210, and the shaft seat 212 is fixed to the mounting plate 210 by a screw.

In a possible implementation manner, a rope locking mechanism 220 is mounted on the shaft seat 212, the rope locking mechanism 220 includes a pressing head 221, a connecting shaft 222 is fixed on one side of the pressing head 221, the connecting shaft 222 is disposed through a shaft hole of the shaft seat 212, and the connecting shaft 222 is slidably disposed in the shaft hole. Optionally, a first spring 223 is sleeved on the connecting shaft 222, the first spring 223 is disposed between the shaft seat 212 and the pressing head 221, and two ends of the first spring 223 are fixed on the opposite surfaces of the shaft seat 212 and the pressing head 221 respectively.

Optionally, a cambered groove is formed in a surface of the pressing head 221 facing the first fixed pulley 211, and an inner cambered surface of the cambered groove is matched with an outer peripheral surface of the first fixed pulley 211. In specific implementation, the pressing head 221 is pressed against the first fixed pulley 211 under the elastic force of the first spring 223, and when the pull rope 300 is arranged on the first fixed pulley 211, the arc-shaped groove on the pressing head 221 can be pressed on the pull rope 300, so that the pull rope 300 can be locked.

Further, the central axis of the connecting shaft 222 of the rope locking mechanism 220 extends in the radial direction of the first fixed pulley 211, so that the maximum pushing force can be ensured.

Optionally, a stop 224 is disposed at the free end of the connecting shaft 222 to prevent the connecting shaft 222 from coming out of the boss 212.

In one possible implementation, the cord locking mechanism 220 controls its ram 221 to press or release the draw cord 300 via the traction device 230. Specifically, the draft gear 230 includes a housing 234, a draft cord 231, a drum 233, and a crank 232 fixedly attached to one end of the drum 233. The mounting plate 210 is provided with a second fixed pulley 213 near the free end of the connecting shaft 222, a first end of the pulling rope 231 is connected to the free end of the connecting shaft 222, the pulling rope 231 is guided by the second fixed pulley 213 to be wound around the drum 233, and a second end of the pulling rope 231 is fixed to the drum 233. The drum 233 is accommodated in the housing 234, a mounting shaft (not shown) is fixed in the housing 234, a mounting hole (not shown) is formed at the other end of the drum 233, the drum 233 is fitted over the mounting shaft, and the crank 232 is disposed on the outside of the housing 234.

That is, the pull cord 231 is wound around the drum 233 by rotating the handle 232, and the drum 233 is rotated on the mounting shaft. When the pull rope 231 is rotated, the length thereof is shortened to pull the connection shaft 222 outward, and at this time, the first spring 223 is contracted to separate the pressing head 221 from the pull rope 300. It should be noted here that the pulling rope 231 is guided by the second fixed pulley 213 to pull the connecting shaft 222 along the axial direction of the connecting shaft 222.

Referring to fig. 2 and 3, in one possible embodiment, a gear button 235 is also provided on the first face of the housing on which the crank 232 is provided; the gear button 235 includes a stopper portion 202 and a pressing portion 203, the pressing portion 203 is disposed on one side of the stopper portion 202, and the stopper portion 202 and the pressing portion 203 are disposed in a staggered manner, i.e., the stopper portion 202 is disposed above the pressing portion 203, so as to facilitate pressing. Optionally, a second spring 237 is connected to the lower surface of the stopper portion 202, the second spring 237 is received in a slide groove 238 provided in the housing 234, the top end of the second spring 237 is fixed to the bottom of the stopper portion 202, and the stopper portion 202 is received in the slide groove 238 when the shift knob 235 is engaged.

For example, when the traction device 230 is used in a specific application, as shown in fig. 1, the pulling rope 231 is shortened by rotating the crank 232 in the counterclockwise direction to pull out the connecting shaft 222, when passing through the shift button 235 (disposed at a position where the crank 232 is rotated by 180 degrees), the crank 232 can pass through the shift button 235 and be disposed at the other side of the shift button 235 by pressing the pressing portion 203 of the shift button 235, and the rotation of the crank 232 is restricted by the blocking action of the stopper portion 202 of the shift button 235, at which time the crank 232 is locked at the position. When the pull rope 300 needs to be pressed, the rocking handle 232 can be automatically reset under the action of the first spring 223 by only pressing the pressing part 203 downwards.

Optionally, a stop block 236 is disposed on one side of the starting position of the rocking handle 232 to limit the clockwise rotation of the rocking handle 232.

Preferably, a slope 201 is provided on the stopper portion 202, and the slope 201 is used to slide the rocking handle 232 from the bottom to the top when the rocking handle is rotated so that the stopper portion 202 is received in the sliding groove 238. That is, when the crank 232 is rotated, the gear button 235 is automatically depressed by the ramp 201 action, thereby bypassing the gear button 235.

Example two

Referring to fig. 4, the present embodiment provides a blind window covering including the cord lock 200 of the first embodiment. The window blind further comprises a pull rope 300, an angle adjusting rope 400 and blades 500, wherein the pull rope 300 comprises two pull ropes which respectively penetrate through the middle of each blade 500 and are connected with each blade 500, and the pull rope 300 is guided by a first fixed pulley 211 and a guide post 214 arranged on the mounting plate 210. The angle adjusting string 400 provided on the window blind is used to control the turning setting angle of the vanes 500. Alternatively, the traction device 230 of the cord locker 200 is provided on an outer frame 600 provided on a bottom window of the blind.

Illustratively, when the present embodiment is used specifically, the rocking handle 232 is rotated to make the gear button 235 block the rocking handle 232 from rotating, and at this time, the pressing head 221 is disengaged from the pulling rope 300, the vane 500 is drawn from bottom to top by pulling the pulling rope 300, and when drawn to a proper position, the pressing portion 203 of the gear button 235 is pressed, and the rope locking mechanism 220 locks the pulling rope 300, so as to achieve the position limitation of the vane 500. When the illumination intensity needs to be adjusted, the turning angle of the blade 500 is controlled by pulling the angle adjusting rope 400.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rope locking device comprises a mounting plate, wherein a first fixed pulley for guiding a pull rope is fixed on the mounting plate;

2. The rope locking device of claim 1, wherein the central axis of the connecting shaft extends in a radial direction of the first fixed pulley.

3. The rope locker of claim 1 wherein the free end of the connecting shaft is provided with a stop.

4. The cord locker of any one of claims 1 to 3 wherein said traction means comprises a housing, a traction cord, a drum, and a crank secured to a first end of said drum;

5. The cord locker of claim 4, wherein the shift button comprises a pressing part and a stopper part, the pressing part being disposed at one side of the stopper part; a second spring is connected to the lower surface of the stop block part; the shell is provided with a sliding groove below the stop block part, the bottom of the second spring is fixed at the bottom of the sliding groove, and the pressing part can move up and down along the extending direction of the sliding groove; when the pressing portion is pressed down, the stopper portion can be accommodated in the chute.

6. The cord locker of claim 5 wherein the stopper portion is provided with a ramp surface for sliding from a bottom to a top thereof when the crank is rotated to receive the stopper portion in the chute.

7. A window blind comprising the cord lock of any one of claims 1 to 6.