GB2606771A

GB2606771A - A new type of full cord dimming system

Info

Publication number: GB2606771A
Application number: GB2107280.6A
Authority: GB
Inventors: Huang Zhican; Chen Yujiao
Original assignee: Shenzhen Shyugj Tech Co Ltd
Current assignee: Shenzhen Shyugj Tech Co Ltd
Priority date: 2021-05-11
Filing date: 2021-05-21
Publication date: 2022-11-23
Also published as: CN113257605B; CN113257605A; GB202107280D0

Abstract

A pull cord dimming system includes a lighting load and a dimmer for controlling the load. The load and the dimmer are connected in series between live and neutral wires of an AC source. The dimmer is a pull cord dimming system, wherein pulling the cord 3 of a pull switch arrangement 1 causes rotation of a cord reverse swing component 2, which actuates a micro switch 51 inside the pull cord dimmer to control the on/off/dimming of the load through signal recognition of the action of the micro switch. Different control signals are produced according to the duration of micro switch actuation, thereby to realize on/off switching and brightness adjustment of the lighting load.

Description

A NEW TYPE OF FULL CORD DIMMING SYSTEM

BACKGROUND OF THE INVENTION

Technical Field

The invention relates to the field of dimmer technology, and specifically, it involves a new type of pull cord dimming system.

Description of Related Art

Dimmer is widely used at home and abroad, for the purpose of satisfying people's different requirements for lighting brightness in different application scenarios and regulating atmosphere. Besides, by reducing the brightness of lights, it can save energy, reduce pollution and alleviate atmospheric warming to some extent.

At present, the cord switch on the market only has the function of switching lamps but does not have the dimming function. And the household dimmer on the market is mainly installed in the junction box, and chiefly uses the control method of manual rotation or manual push-type for dimming. Such an installation position and control method is relatively fixed, it is unable to change installation position according to the actual needs. In addition, for old buildings which have been wired and installed with cord switch, reinstalling dimmers requires changing the house wiring.

BRIEF SUMMARY OF THE INVENTION

In order to overcome the shortcomings of the existing technology, this product provides a new type of pull cord dimming system.

The technical scheme of the invention is as follows: A new type of pull cord dimming system, comprising a load and a dimmer for controlling the load. The load and the dimmer are connected in series between the live wire and the neutral wire of the AC source The dimmer is a pull cord dimmer. When the cord of the dimmer is pulled. it will touch the micro switch inside the dimmer, thereby identifying the micro switch action by a signal to control the on/off/dimming of the load.

According to the the above invention, the pull cord dimmer includes a housing, a cord reverse swing component, a cord, a transmission assembly, and a dimming PCB assembly.

A first opening is provided under the housing, one end of the cord passes through the first opening and is slidably installed in the housing.

The cord reverse swing component which is rotatably installed in the housing.

The transmission assembly is installed in the housing, and is connected with the cord and the cord reverse swing component.

The dimming PCB assembly is installed in the housing, and the dimming PCB assembly is provided with the micro switch. The micro switch is arranged on the rotation path of the cord reverse swing component.

When the cord is pulled downward, it drives the cord reverse swing component to rotate around a central axis through the transmission assembly, so that the cord reverse swing component touches the micro switch, and sends out different control signals according to the duration of the touch.

According to above invention, the transmission assembly includes a cord fixing seat, a cord sliding guide component, and a first reset spring.

The cord fixing seat is installed in the housing, the bottom of the cord fixing seat is provided with a second opening, the side wall of the cord fixing seat is provided with a sliding groove and a rotating shaft, and the cord reverse swing component can be rotatably installed on the rotating shaft.

The cord sliding guide is installed in the cord fixing seat. The cord passes through the second opening and is connected to the cord sliding guide component. One side of the cord sliding guide component is provided with a force arm, and one end of the force arm passes through the sliding groove, and is driven by the cord to slide along the sliding groove, besides, one side of the cord reverse swing component is set on the sliding path of the force arm; The first return spring is installed in the cord fixing seat, one end of the first return spring is connected with the cord sliding guide component, the other end of the first return spring is connected with the bottom of the cord fixing seat, and the cord passes through the first return spring: The cord reverse swing component includes a hollow rotating column, a first swing arm and a second swing arm. The hollow rotating column is rotatably installed on the rotating shaft. The first swing arm and the second swing arm are symmetrically arranged on both sides of the hollow rotating columns. The first swing arm is arranged on the sliding path of the force arm, and the micro switch is arranged on the rotation path of the second swing arm.

A blocking screw is provided at the end of the rotating shaft away from the cord fixing seat.

The housing includes a top plate, an inner cover and an outer cover. The outer cover covers the inner cover and is connected with the top plate. The cord reverse swing component, the transmission assembly and the dimming PCB assembly are installed in the space enclosed by the bottom housing and the inner cover.

The side wall of the cord fixing seat is provided with a hollow first fixing column with screw holes, and the top plate is provided with a second fixing column with screw holes. The first fixing column is arranged on the second fixing column, and the first fixing column and the second fixing column are fixed by a first screw.

The inner cover is provided with a first screw hole, the dimming PCB assembly is provided with a second screw hole, the top plate is provided with a third screw hole. The second screw passes through the first screw hole and the the second screw hole and the third screw hole in turn, fixing the inner cover, the dimming PCB assembly and the top plate.

The top pleat and the outer cover are circular. The outer edge of the top plate is provided with external threads, the inner edge of the outer cover is provided with internal threads, and the outer cover is fixed to the top plate by the internal and external threads.

The transmission assembly includes a rotating component and a second return spring.

The rotating component is rotatably installed in the cord fixing seat and located below the cord sliding guide component. The middle of the rotating component is provided with a third opening. The cord and the first return spring pass through the third opening and connect to the sliding guide component, the rotating component is provided with a rotating guide component distributed along the circumference of the third opening, and the cord sliding guide component is provided with a rotating guide seat that matches with the rotating guide seat.

The second return spring is installed in the cord fixing seat, one end of the second return spring is connected with the rotating component, the other end of the second return spring is connected with the bottom of the cord fixing seat, and the cord and the first return spring pass through the second return spring.

The rotating guide component is provided with a first guide slope, and the rotating guide seat is provided with a second guide slope. The first guide slope and the second guide slope have the same inclination angle.

According to the above-mentioned invention, the beneficial effects of the invention are: The invention rotates the cord reverse swing component by pulling the cord, touches the micro switch on the dimming PCB assembly, and sends out different control signals according to the duration of touching the micro switch, so, it can realize the functions of load on/off, dimming, etc. The invention can be installed on the ceiling of each application, the installation position is flexible, and there is no need to change the wiring.

With the transmission assembly of the invention, when the cord is pulled repeatedly, the force arm of the cord sliding guide component slides repeatedly, so that it can drives the cord reverse swing component to rotate repeatedly, so that the rotation angle is touched and transmitted to the micro switch on the dimming PCB assembly. Realize the cycle of on and off states, and achieve the purpose of controlling the dimming of the entire dimming circuit; at the same time, through the rotating component and two return springs, it can achieve a crisp sound, and a soft spring hand feel every time when the cord is pulled.

The invention adopts the structural design of the inner and outer cover, the outer cover can cover the screws and screw holes on the inner cover, which can not only ensure the structural stability of the product, but also ensure the beautiful appearance of the product.

The invention adopts internal and external threads to fix the top plate and the outer cover, which not only facilitates the installation/disassembly of the product, but also further ensures that the appearance of the product is exquisite.

Description of the drawings

Fig.I is a wiring diagram of the late pull cord dimmer of the present invention; Fig.2 is the structure explosion diagram of the late pull cord dimmer of the invention; Fig.3 is the structure diagram of the late pull cord dimmer of the invention; Fig.4 is a schematic diagram of the connection of the cord reverse swing component, the transmission assembly and the dimming PCB assembly of the invention; Fig.5 is a schematic diagram of the structure of the cord sliding guide component of the invention; Fig.6 is a schematic diagram of the structure of the rotating component of the invention; Fig.7 is a schematic diagram of the structure of the cord reverse swing component of the invention; Fig.8 is a schematic diagram of the structure of the top plate of the invention; Fig.9 is a schematic diagram of the structural of the inner cover of the invention with the teiminal cover removed; Fig.10 is a schematic diagram of the structure of the outer cover of the present invention; Fi2.11 is a schematic diagram of the structure of the late pull cord dimmer after removing the outer cover and pulling cord.

In the figure, the reference signs are as follows: I. Housing; 11. First opening; 12. Top plate; 121 Second fixing post; 122. Third screw hole; 123. External thread; 13. Inner cover; 131. First screw hole; 132. Fourth Opening; 133. Terminal slot; 134. Terminal cover; 135. Fifth opening; 14. Outer cover; 141. Internal thread; 2. Cord reverse swing component; 21. Hollow rotating column; 22. First swing arm; 23. Second swing arm; 3. The cord; 31. The handle; 4. Transmission assembly; 41. Cord fixing seat; 411. Second opening; 412. Rotating shaft; 4121. Blocking screw; 413. Sliding groove; 414. First fixing post; 42. Cord sliding guide component; 421. Force arm; 422. Rotation guide seat; 4221. Second guide slope; 43. First return spring; 44. Rotation component; 441. Third opening; 442. Rotation guide component; 4421. First guide slope; 45. Second return springs; 5. Dimming PCB assembly; 51. Micro switch; 52. Fine adjustment knob; 53. Wiring terminal; 54. Second screw hole; 6. The first screw; 7. The second screw.

DETAILED DESCRIPTION OF THE INVENTION

In order to make the technical problems, technical solutions and beneficial effects to be solved by the invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and examples.

It should be noted that the terms "setting", "connection", "installation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a whole; it can be a mechanical connection, or it can be an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. The directions or positions indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positions shown in the drawings, and are only for ease of description and cannot be understood as restrictions on this technical solution. The terms "first" and "second" are only used for ease of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features.

Please refer to Fig. I. This example provides a new type of pull cord dimming system, including a load and a dimmer for controlling the load. The load and dimmer are connected in series between the live and neutral lines of the AC source. The dimmer is the pull cord dimmer, when pulling the cord 3 of the pull cord diminer, the micro switch 51 inside the pull cord dimmer will be touched, thereby identifying the action of the micro switch 51 through the signal to control the on/off of the load /Dimming.

Please refer to FIG 2 to FIG. 4, the pull cord dimmer includes a housing 1, a cord reverse swing component 2, a cord 3, a transmission assembly 4 and a dimming PCB assembly 5. A first opening 11 is provided under the housing 1, one end of the cord 3 passes through the first opening 11, and is slidably installed in the housing 1, and the cord reverse swing component 2 is rotatably installed in the housing 1., the transmission assembly 4 is installed in the housing 1, and is connected to the cord 3 and the cord reverse swing component 2. The dimming PCB assembly 5 is installed in the housing 1, and the dimming PCB assembly 5 is provided with a micro switch 51. The micro switch 51 is electrically connected to the dimming circuit on the dimming PCB assembly 5. The micro switch 51 is arranged on the rotation path of the cord reverse swing component 2; when the cord 3 is pulled downward, the cord 3 drives the cord reverse swing component 2 to rotate around a central axis through the transmission assembly 4, so that the cord reverse swing component 2 touches the micro switch 51, and different control signals are sent to dimming circuit according to the duration of the touch. So as to realize the load on/off, dimming and other functions. Specifically, the software signal recognizes the duration of connection between the cord reverse swing component 2 and the micro switch 51. lithe duration is long, it will enter the dimming mode to achieve the purpose of dinuning. If the duration is short (only act once until the internal spring sounds), it will change the opening and closing state of the switch. Please refer to FIG. 2, FIG. 4, FIG. 5. and FIG. 6, the transmission assembly 4 includes a cord fixing scat 41, a cord sliding guide component 42, a first return spring 43, a rotating part 44, and a second return spring 45.

The cord fixing scat 41 is installed in the housing 1, the cord sliding guide component 42 is installed in the cord fixing seat 41, the bottom of the cord fixing seat 41 is provided with a second opening 411, and the cord 3 passes through the second opening 411 connected to the cord sliding guide component 42, the side wall of the cord fixing seat 41 is provided with a rotating shaft 412, the cord reverse swing component 2 is rotatably mounted on the rotating shaft 412; The side wall of the cord fixing seat 41 is provided with a sliding groove 413, one side of the cord sliding guide component 42 is provided with a force arm 421. One end of the force arm 421 passes through the sliding groove 413 and is driven by the cord 3 slides along the sliding groove 413. One side of the cord reverse swing component 2 is set on the sliding path of the force arm 421; when the cord 3 is pulled downward, the force arm 421 slides along the sliding groove 413, when the force arm 421 touches the cord reverse swing component 2, the force aim 421 drives the cord reverse swing component 2 to rotate around the rotation shaft 412, so that the cord reverse swing component 2 touches the micro switch 51.

The first return spring 43 is installed in the cord fixed seat 41, one end of the first return spring 43 is connected to the cord sliding guide component 42, and the other end of the first return spring 43 is connected to the bottom of the cord fixed scat 41, and is pulled the cord 3 passes through the first return spring 43; when the cord 3 is pulled downwards, the cord sliding guide component 42 slides down and compresses the first return spring 43, which generates elastic force; after the cord 3 is released, the cord sliding guide component 42 is reset under the action of the elastic force of the first return spring 43.

The rotating component 44 is rotatably installed in the cord fixed seat 41, and is located below the cord sliding guide component 42, the middle of the rotating component 44 is provided with a third opening 441, and the cord 3 and the first return spring 43 pass through the third opening 441, the third openings 441 are connected to the cord sliding guide component 42, the rotating component 44 is provided with a rotating guide component 442 distributed along the circumference of the third opening 441, the cord sliding guide component 42 is provided with a rotating guide seat that matches with the rotating guide component 442, when the cord sliding guide component 42 slides downward, the rotating guide component 442 and the rotating guide scat 422 drive the rotating component 44 to rotate around the cord 3 and slide downward along with the cord sliding guide component 42.

The second return spring 45 is installed in the housing 1, one end of the second return spring 45 is connected to the rotating component 44, the other end of the second return spring 45 is connected to the bottom of the cord fixed seat 41, and the cord 3 is connected to the first return spring 43 and passes through the second return spring 45; when the cord 3 is pulled downwards, the rotating component 44 slides down following the cord sliding guide component 42, and the First return spring 43 and the second return spring 45 are compressed when the cord sliding guide component 42 and the rotating component 44 slide down, and then generates elastic force, the rotating component 44 cooperates with the rotating guide component 442 and the rotating guide seat 422 to rotate under the elastic force of the first return spring 43 and the second return spring 45; The rotating component 44 cooperates with the rotating guide component 442 and the rotating guide seat 422 to reset under the elastic force of the first return spring 43 and the second return spring 45, and achieve a crisp sound, and a soft spring hand feel.

Using the above-mentioned transmission assembly 4, when the cord 3 is repeatedly pulled, the force arm 421 of the cord sliding guide component 42 slides repeatedly, to drive the cord reverse swing component 2 to rotate repeatedly, so that the rotation angle is touched and transmitted to the micro switch 51 on the PCB assembly 5, realize the cycle of on and off states to achieve the dimming effect of controlling the entire dimming circuit.

Please refer to picture 7, the cord reverse swing component 2 includes a hollow rotating column 21, a first swing arm 22, and a second swing arm 23. The hollow rotating column 21 is rotatably installed on the rotating shaft 412, and the first swing arm 22 And the second swing arm 23 are symmetrically arranged on both sides of the hollow rotating column 21, the first swing arm 22 is arranged on the sliding path of the force arm 421, the micro switch 51 is arranged on the rotation path of the second swing arm 23, the force arm 421, when sliding down along the sliding groove 413, the force arm 421 touches the first swing arm 22, driving the first swing arm 22 and the second swing arm 23 to rotate around the rotation shaft 412. as a result, the second swing arm 23 is in contact with the micro switch 51.

Please refer to picture 2 and 4, a blocking screw 4121 is provided at one end of the rotating shaft 412 away from the cord fixed seat 41 to prevent the rotating component 44 from falling off the rotating shaft 412 when the rotating component 44 rotates.

Please refer to picture 5 and 6, the rotation guide component 442 is provided with a first guide slope 4421, the rotation guide seat 422 is provided with a second guide slope 4221, the first guide slope 4421 and the second guide slope 4221 have the same inclination angle, through the above-mentioned first guide slope 4421 and second guide slope 4221, the rotating component 44 realizes rotation under the action of the first guiding inclined surface 4421 and the second guiding inclined surface 4221.

Please refer to picture 4, the dimming PCB assembly 5 is also provided with a fine adjustment knob 52 and a terminal 53, both the fine adjustment knob 52 and the terminal 53 are electrically connected to the dimming circuit on the dimming PCB assembly 5, the fine adjustment knob 52 is used for the minimum brightness of the light source is fine-tuned, and the terminal 53 is used to connect the circuit.

Please refer to picture 2, 8, 9, 10, the housing 1 includes a top plate 12, an inner cover 13, and an outer cover 14. The outer cover 14 covers the inner cover 13 and is connected to the top plate 12. The cord reverse swing component 2, the transmission assembly 4 and the dimming PCB assembly 5 are installed in the space enclosed by the bottom shell and the inner cover 13, the side wall of the cord fixing seat 41 is provided with a hollow first fixed post 414 with screw holes, and the top plate 12 is provided with a second fixed post 121 with screw holes, and the first fixed post 414 is installed on the second fixed post 121, the first fixed post 414 and the second fixed post 121 are fixed by the first screw 6, a first screw hole 131 is provided on the inner cover 13, a second screw hole 54 is provided on the dimming PCB assembly 5, a third screw hole 122 is provided on the top plate 12, and the second screw 7 passes through the first screw hole 131, the second screw hole 54 and the third screw hole 122 fix the inner cover 13, the dimming PCB assembly 5 and the top plate 12. By adopting the structural design of the inner and outer covers, the outer cover 14 can block the screws and screw holes on the inner cover 13, which can ensure the structural stability of the product and the exquisite appearance of the product.

Please refer to picture 8 and 10, the top plate 12 and the outer cover 14 are circular, the outer edge of the top plate 12 is provided with an external thread 123, the inner edge of the outer cover 14 is provided with an internal thread 141, and the outer cover 14 passes through the internal thread 141 and the external thread 123 is fixed to the top plate 12, the top plate 12 and the outer cover 14 are fixed by means of internal and external threads 123, which not only facilitates the installation/disassembly of the product, but also further guarantees the exquisite appearance of the product.

Please refer to picture 9 and 11, the inner cover 13 is further provided with a fourth opening 132 that cooperates with the fine adjustment knob 52, and the adjustment end of the fine adjustment knob 52 is arranged in the fourth opening 132, with the above arrangement, when the minimum brightness of the light source needs to be fine-tuned, it can be adjusted by the fine adjustment knob 52 only by twisting the outer cover 14 without disassembling the inner cover 13.

Please refer to picture 2 and 9, the inner cover 13 is also provided with a terminal slot 133 and a terminal cover 134, the terminal cover 134 is clamped on die terminal slot 133, and the terminal slot 133 is provided with a fifth opening 135 that matches the terminal 53. When wiring is required, the terminal cover 134 is opened, and the wiring passes through the fifth opening 135 to connect to the wiring terminal 53.

Please refer to picture 2, the end of the draw cord 3 away from the housing 1 is provided with a draw handle 31, which is convenient for people to pull the draw cord 3 by hand.

It should be understood that those of ordinary skill in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the protection scope of the appended claims of the present invention.

The patent of the present invention is exemplarily described above in conjunction with the accompanying drawings. Obviously, the realization of the patent of the present invention is not limited by the above methods, as long as various improvements made by the method concept and technical solutions of the present invention patent are adopted, or without improvement if the concept and technical scheme of the patent of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

What is claimed is: 1. A new type of pull cord dimming system, comprising a load and a dimmer for controlling the load, the load and the dimmer are connected in series between the live and neutral wires of the AC source, and are characterized in this: The dimmer is a pull cord dimmer. When the cord of the pull cord dimmer is pulled, the micro switch inside this dimmer is touched, so as to identify the position of the micro switch actions through a signal to control the on/off/dimming of the load.
2.The new pull cord dimming system according to claim 1, It is characterized in that, the cord dimmer comprises a housing, a cord reverse swing component, a pull cord, a transmission assembly, and a dimming PCB assembly; A first opening is provided under the housing, and one end of the cord passes through the first opening and is slidably installed in the housing; The cord reverse swing component is rotatably installed in the housing; The transmission assembly is installed in the housing, and connects the cord and the cord reverse swing component; The dimming PCB assembly is installed in the housing and is provided with the micro switch, the micro switch is provided on the rotation path of the cord reverse swing component; When the cord is pulled downwards, the cord drives the cord reverse swing component to rotate around a central axis through the transmission assembly, so that the cord reverse swing component touches the micro switch, and send out different control signals according to the duration of the touch.
3.The new pull cord dimming system according to claim 2, it is characterized in that the transmission assembly includes a cord fixing seat a cord sliding guide component and the first return spring; The cord fixing seat is installed in the housing, the bottom of the cord fixing seat is provided with a second opening, the side wall of the cord fixing seat is provided with a sliding groove and a rotating shaft, and the cord reverse swing component is rotatably mounted on the rotating shaft; The cord sliding guide component is installed in the cord fixing seat, the cord passing through the second opening is connected to the cord sliding guide component, and one side of the cord sliding guide component is provided with a force arm, one end of the force arm passes through the sliding groove and is driven by the cord to slide along the sliding groove, and one side of the cord reverse swing component is provided on the sliding path of the force arm; The first return spring is installed in the cord fixing seat, one end of the first return spring is connected to the cord sliding guide component, and the other end of the first return spring is connected to the bottom of the cord fixing seat and the cord passes through the first return spring.
4.The new cord dimming system according to claim 3, it is characterized in that the cord reverse swing component comprises a hollow rotating column, the first swing arm and the second swing arm and the hollow rotating column is rotatably set on the rotating shaft, the first swing arm and the second swing arm are symmetrically arranged on both sides of the hollow rotating column, the first swing arm is arranged on the sliding path of the force arm, the micro switch is arranged on the rotation path oldie second swing arm
5.The new pull cord dimming system according to claim 4, it is characterized in that the end of the rotating shaft away from the cord fixing seat is provided with a blocking screw.
6.The new pull cord dimming system according to claim 4, it is characterized in that the housing includes a top plate, an inner cover, and an outer cover, and the outer cover covers the inner cover and is connected to the top plate. The cord reverse swing component, the transmission assembly and the dimming PCB assembly are installed in the space enclosed by the bottom shell and the inner covet
7. The new pull cord dimming system according to claim 5, it is characterized in that the side wall of the pull cord fixing seat is provided with a hollow first fixing post with screw holes, and the top plate is provided with the second fixed post with screw holes, the first fixed post is sleeved on the second fixed post, the first fixed post and the second fixed post arc fixed by the first screw.
8. The new type pull cord dimming system of claim 6, it is characterized in that the inner cover is provided with a first screw hole, the dimming PCB assembly is provided with a second screw hole, and the top plate is provided with a third screw hole, the second screw passes through the first screw hole, the second screw hole and the third screw hole in order to fix the inner cover, the dimming PCB assembly and the top plate.
9. The new pull cord dimming system according to claim 6, it is characterized in that the top plate and the outer cover are circular, the outer edge of the top plate is provided with external threads, and the inner edge of the outer cover is provided with internal thread, the outer cover is fixed to the top plate through the internal thread and the external thread.
10. The new pull cord dimming system according to claim 3, it is characterized in that the transmission assembly further comprises a rotating component and a second return spring; The rotating component is rotatably installed in the cord fixing seat and located below the cord sliding guide component, a third opening is provided in the middle of the rotating component, the cord and the first return spring passes through the third opening and is connected to the cord sliding guide component, the rotating component is provided with a rotating guide component distributed along the circumference of the third opening, and the cord sliding guide component is provided with rotation guide seat matched with rotation guide seat; The second return spring is installed in the cord fixing seat, one end of the second return spring is connected with the rotating component, and the other end of the second return spring is connected with the bottom of the cord fixing seat, and the cord and the first return spring pass through the second return spring.