阅读说明：本技术 适用于电动窗帘的传动箱及应用有该传动箱的电动窗帘 (Transmission case suitable for electric curtain and electric curtain applying same ) 是由 孙勇 俞锡鹏 鲍永林 翁建君 汪冰 于 2020-07-08 设计创作，主要内容包括：本发明涉及一种适用于电动窗帘的传动箱及具有传动箱的电动窗帘,传动箱,包括传动箱壳体,其特征在于,所述传动箱壳体内设置有用于与电动窗帘的电机实现传动配合的离合装置。在电动窗帘的电机转动下,传动箱内的离合装置随电机转动,离合装置带动电动窗帘的遮阳帘沿着轨道移动。通过将离合装置设置在传动箱壳体内,而不是像传统电动窗帘结构那样将离合装置设置在电机壳体内,从而可以有效缩短电机壳体长度,方便更换或修理出现故障的离合装置。(The invention relates to a transmission case suitable for an electric curtain and the electric curtain with the transmission case. Under the rotation of the motor of the electric curtain, the clutch device in the transmission case rotates along with the motor, and the clutch device drives the sunshade curtain of the electric curtain to move along the track. The clutch device is arranged in the transmission case shell instead of the traditional electric curtain structure, so that the length of the motor shell can be effectively shortened, and the clutch device with faults can be conveniently replaced or repaired.)

1. The transmission case suitable for the electric curtain comprises a transmission case shell (10) and is characterized in that a clutch device (11) which is used for being in transmission fit with a motor (2) of the electric curtain is arranged in the transmission case shell (10).

2. A transmission housing adapted for a motorized window treatment according to claim 1, wherein the clutch means (11) comprises:

the driving piece (111) is in transmission connection with an output shaft of the motor (2);

the driven piece (112) is used for being in transmission connection with a sunshade curtain of the electric curtain; when the motor runs, the driving part (111) drives the driven part (112) to move; when the sunshade curtain moves, the driven part (112) and the driving part (111) are separated from the transmission relation.

3. Transmission housing for a motorized window treatment according to claim 2, characterized in that a travel detection means (12) is provided in the transmission housing (10) for detecting the displacement distance of the shade.

4. A transmission housing adapted for a motorized window treatment according to claim 3, wherein the stroke detecting means (12) comprises:

the rotating piece (121) is positioned in the transmission case shell (10) and is in coaxial transmission with the clutch device (11);

and a detection probe (122) disposed adjacent to the rotary member (121) and recording rotational movement information of the rotary member (121).

5. The transmission case for a motorized window treatment according to claim 4, wherein the rotating member (121) has a plurality of magnets (1210), the detecting probe (122) is a sensor for sensing the intensity of the magnetic field generated by the magnets (1210), and the rotating member (121) is fixed coaxially with the driven member (112) of the clutch device (11).

6. The transmission case suitable for the electric curtain as claimed in claim 2, wherein a magnetic field intensity detection probe is arranged in the motor (2), a rotating piece is arranged in the transmission case shell (10), and the rotating piece is coaxially driven with the clutch device (11); wherein, the rotating piece (121') is matched with a magnetic field intensity detection probe in the motor (2) to form a stroke detection device for detecting the displacement distance of the sun-shading curtain.

7. The transmission case suitable for the electric window curtain as claimed in any one of claims 1 to 6, wherein a first metal contact (13) connected with the stroke detection device is arranged on the transmission case shell (10), and a second metal contact (21) electrically contacted with the first metal contact (13) is arranged on the motor (2).

8. The transmission case for the motorized window treatment according to any one of claims 1 to 6, wherein the transmission case (1) is detachably connected with the motor (2).

9. Motorized window treatment applying a transmission according to claim 1 or 2, comprising a motor (2) and a track (3), characterized in that the transmission (1) is detachably connected to the motor (2).

10. Electric window curtain with a gearbox according to any of claims 3 to 6, comprising a motor (2) and a track (3), characterised in that the gearbox (1) is detachably connected to the motor (2).

Technical Field

The invention relates to the field of electric curtains, in particular to a transmission case suitable for an electric curtain and an electric curtain applying the transmission case.

Background

With the increasing requirements of people on home life, more and more families begin to install electric curtains, and the curtains (also called as sun shades) are opened or closed by controlling the electric curtains.

The electric curtain on the market at present mainly includes motor and track, has driving motor, control circuit board, clutch and stroke detection device in the motor, and stroke detection device is responsible for detecting the stroke length that the (window) curtain moved along with the track, and control circuit board passes through the wire with stroke detection device and is connected, is equipped with a plurality of links on the track, and the (window) curtain hangs in the corresponding link on the track through the couple. When the electric curtain works, the electrified motor drives the curtain to move along the track; when the motor is powered off, the motor drives the curtain to move in a mode of manually pulling the curtain by using a clutch device in the motor.

There are some problems with current motorized window treatments: the clutch device is arranged in the motor, so that the motor is required to have a longer shell; in addition, when the clutch device in the motor fails, the whole motor needs to be disassembled first, and then the clutch device with the failure needs to be repaired or replaced, which undoubtedly increases the replacement cost when the curtain motor fails.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a transmission box suitable for a motorized window shade in view of the above prior art. After the transmission case is respectively matched and installed with the motor and the rail of the electric curtain, the length of the motor shell can be effectively shortened, and the clutch device with faults can be conveniently replaced or repaired.

The second technical problem to be solved by the invention is to provide the electric curtain with the transmission case.

The third technical problem to be solved by the invention is to provide another electric curtain applying the transmission case.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the transmission case suitable for the electric curtain comprises a transmission case shell and is characterized in that a clutch device which is used for being in transmission fit with a motor of the electric curtain is arranged in the transmission case shell.

After the transmission box is in transmission fit connection with the motor of the electric curtain, the clutch device in the transmission box rotates along with the rotating motor under the rotation of the motor, and the clutch device drives the sunshade curtain of the electric curtain to move along the track. The clutch device is arranged in the transmission case shell instead of the traditional electric curtain structure, so that the length of the motor shell can be effectively shortened, and the clutch device with faults can be conveniently replaced or repaired.

As an implementation structure of the clutch device, specifically, the clutch device herein includes:

the driving part is used for being in transmission connection with an output shaft of the motor;

the driven part is used for being in transmission connection with a sunshade curtain of the electric curtain; when the motor runs, the driving part drives the driven part to move; when the sunshade screen moves, the driven part and the driving part are separated from the transmission relation.

In addition, a stroke detection device for detecting the displacement distance of the curtain can be arranged in the transmission case shell according to the requirement. Therefore, the length of the motor shell can be effectively shortened, and the fault stroke detection device is convenient to replace or repair. As for the stroke detecting device herein, specifically, the stroke detecting device includes:

the rotating piece is positioned in the transmission case shell and is in coaxial transmission with the clutch device;

and a detection probe disposed adjacent to the rotating member to record rotational movement information of the rotating member. For example, the rotational movement information here includes the number of rotations and the rotation angle of the rotating member when rotating.

Furthermore, the rotating part is provided with a plurality of magnets, the detection probe is a sensor for sensing the magnetic field intensity generated by the magnets, and the rotating part and a driven part of the clutch device are coaxially fixed.

The rotating piece is designed into a circular turntable according to the requirement, a plurality of holes which are uniformly distributed along the edge direction of the circular turntable can be arranged on the circular turntable, and the magnets are placed in the holes. In practical cases, the detecting probe here may be a probe of a hall plate, the hall plate is located in the transmission case, and a hall element on the hall plate can sense a periodically changing magnetic field and convert the periodically changing magnetic field intensity signal into a periodically changing electric signal, so as to record the movement information such as the number of rotations and the rotation angle of the rotating member when the rotating member rotates.

Of course, the rotating member may also be provided with a grating or a light-reflecting strip, and the detection probe disposed near the rotating member is a light-sensing sensor, so that the light-sensing sensor can sense the electrical signal with periodic variation generated when the rotating member rotates by detecting the light variation of the grating or the light-reflecting strip on the rotating member.

In the stroke detection device of this aspect, the rotary member may be fixed coaxially with the driving member of the clutch device or may be fixed coaxially with the driven member of the clutch device. Preferably, the rotary member is fixed coaxially with the driven member of the clutch device.

When the driven part of the clutch device rotates along with the driving part, the rotating part rotates along with the driven part, the magnets on the driven part also rotate along with the driven part, the magnetic field intensity detection probe arranged in the transmission case shell continuously detects the magnetic field intensity change generated by the magnets on the driven part, then the number of turns of the driven part which have been rotated can be obtained by the control circuit board of the motor according to the detected magnetic field intensity, and then the distance of the sunshade curtain moving along the track can be accurately calculated according to the number of turns of the driven part which have been rotated.

In the actual production process, as another arrangement mode of the stroke detection device for detecting the curtain displacement distance, a magnetic field intensity detection probe can be arranged in the motor, a rotating piece is arranged in the transmission case shell, and the rotating piece and the clutch device are coaxially driven; the rotating piece is matched with a magnetic field intensity detection probe in the motor to form a stroke detection device for detecting the displacement distance of the sun-shading curtain; wherein, the rotating member is a circular turntable.

In the stroke detection device of this aspect, the rotary member may be fixed coaxially with the driving member of the clutch device or may be fixed coaxially with the driven member of the clutch device. Preferably, the rotary member is fixed coaxially with the driven member of the clutch device.

In order to conveniently match and install the transmission case and the track of the electric curtain, one end of the transmission case shell is provided with a track installation opening for installing the track of the electric curtain.

In order to realize the connection between the stroke detection device and the control circuit board of the motor, as an improvement measure, a first metal contact connected with the stroke detection device is arranged on the transmission case body, and a second metal contact electrically contacted with the first metal contact is arranged on the motor. Therefore, after the first metal contact of the transmission case is matched and electrically connected with the second metal contact on the motor, the stroke detection device is in communication connection with the control circuit board in the motor, and the control circuit board can conveniently process the data detected by the stroke detection device to obtain the moving distance of the sunshade curtain of the electric curtain. In particular, the first metal contact here can be located on the outer side of the transmission housing bottom.

In order to facilitate the assembly between the transmission case and the motor and the subsequent maintenance requirement, in the transmission case suitable for the electric window curtain, the transmission case and the motor are detachably connected together. That is, the transmission case has a fitting structure that realizes detachable connection with the motor.

Of course, the transmission case and the motor can be fastened together according to the requirement.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the electric curtain with the transmission case comprises a motor and a track, and is characterized in that the transmission case and the motor are detachably connected together.

After a motor of the electric curtain is started, the motor drives a clutch device of the transmission case to rotate, the clutch device drives a sunshade curtain of the electric curtain to move along a track of the electric curtain, and the stroke detection device detects the displacement distance of the sunshade curtain. Because the clutch device of the electric curtain is arranged in the transmission case shell, and the clutch device is not arranged in the motor shell, the length of the motor shell can be effectively shortened, and the clutch device with faults can be conveniently replaced or repaired. Certainly, because transmission case and motor are in the same place for detachably connecting, make things convenient for the equipment between transmission case and the motor like this, the convenience is dismantled both and is carried out the maintenance.

The technical scheme adopted by the invention for solving the third technical problem is as follows: the electric curtain with the transmission case comprises a motor and a track, and is characterized in that the transmission case and the motor are detachably connected together. Wherein, in the electric curtain, the stroke detection device is arranged in the transmission case shell.

After the motor of the electric curtain is started, the motor drives the clutch device of the transmission case to rotate, the sun-shading curtain of the electric curtain is driven by the clutch device to move along the track of the electric curtain, and the travel detection device in the transmission case detects the displacement distance of the sun-shading curtain. Because the clutch device of the electric curtain is arranged in the transmission case shell, and the clutch device is not arranged in the motor shell, the length of the motor shell can be effectively shortened, and the clutch device with faults can be conveniently replaced or repaired. Certainly, because transmission case and motor are in the same place for detachably connecting, make things convenient for the equipment between transmission case and the motor like this, the convenience is dismantled both and is carried out the maintenance.

Compared with the prior art, the invention has the advantages that:

firstly, the clutch device of the electric curtain is arranged in the transmission case shell, so that the clutch device is not arranged in the motor shell like the transmission electric curtain, the length of the motor shell of the electric curtain can be effectively shortened, and the clutch device with faults can be conveniently replaced or repaired;

secondly, the transmission case also arranges the stroke detection device in the transmission case shell, thereby being convenient for replacing or repairing faults of the stroke detection device;

thirdly, as the rotating piece of the stroke detection device is coaxially connected with the driven piece of the clutch device, when a user pulls the curtain manually, the driven piece of the clutch device still rotates, and the stroke detection device can detect the stroke displacement of the hand-pulled curtain at the moment, so that the defect that the stroke position information cannot be judged after the traditional electric curtain is pulled by hand;

compared with the traditional scheme that the clutch device is arranged in the motor shell, in the electric curtain, the motor output shaft does not have rotation torque input in the process of pulling the curtain by hand, and the transmission process of a transmission gear of the original traditional transmission case and the motor output shaft is not needed, so that the transmission loss is reduced, and the pull curtain is smoother and is more labor-saving;

finally, the transmission case is also provided with a metal contact according to the requirement, so that the metal contact on the transmission case can be electrically contacted with the metal contact on the motor, the communication connection between the stroke detection device in the transmission case and the control circuit board of the motor is realized, the problem of inconvenient assembly and matching caused by the adoption of a long lead wire between the control circuit board in the motor and the stroke detection device of the traditional electric curtain is avoided, and the control connection between the motor and the transmission case is facilitated.

Drawings

FIG. 1 is a schematic structural view of a first transmission case according to an embodiment of the present invention;

FIG. 2 is a schematic bottom view of the transmission housing of FIG. 1;

FIG. 3 is an exploded view of the transmission housing of FIG. 1;

FIG. 4 is an exploded view of the clutch device and the travel detection device of FIG. 3;

FIG. 5 is a schematic view of a motor structure according to an embodiment of the present invention;

FIG. 6 is a schematic view of a motorized window treatment according to an embodiment of the present invention;

FIG. 7 is a schematic view of the motorized window treatment of FIG. 6 with the motor and the transmission housing separated;

fig. 8 is a schematic diagram of the connection between the control circuit board, the driving motor and the stroke detection device in the embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

This embodiment provides two types of gear boxes suitable for use in a motorized window treatment. Referring to fig. 1 to 3, the first transmission case includes a transmission case 10 and a cover plate 101 that is sealed and matched with the transmission case, and a clutch device 11 that is used for realizing transmission matching with the motor 2 of the electric curtain and a stroke detection device 12 that detects the displacement distance of the curtain are arranged in the transmission case 10. The clutch device 11 and the stroke detection device 12 are positioned in a space formed after the transmission case shell 10 and the cover plate 101 are packaged. Wherein, clutch 11 includes:

the driving piece 111 is used for being in transmission connection with an output shaft of the motor 2;

a driven member 112, which is used for being connected with the sunshade curtain of the electric curtain in a transmission way; when the motor runs, the driving part 111 drives the driven part 112 to move; when the sunshade curtain moves, the driven part 112 and the driving part 111 are separated from the transmission relation.

Referring to fig. 3 and 4, the stroke detecting device 12 in the transmission case includes:

the rotating part 121 is positioned in the transmission case shell 10 and is in coaxial transmission with the driven part 112, the rotating part 121 is provided with a plurality of magnets 1210, the rotating part 121 is designed into a circular turntable form, a plurality of holes uniformly distributed along the edge direction of the circular turntable are formed in the circular turntable, and the magnets are placed in the holes;

and a detection probe 122 arranged close to the rotary member 121, the detection probe 122 being located inside the transmission housing 10, the detection probe 122 being responsible for recording information on the rotary movement of the rotary member 121. The rotational movement information here includes, for example, the number of rotations and the rotation angle of the rotating member 121 when rotating. The sensing probe 122 in this embodiment employs a sensor that senses the strength of the magnetic field generated by the magnet 1210. Specifically, the detecting probe 122 is a hall plate probe, the hall plate may be disposed in the transmission case 10, and a hall element close to the circular turntable is disposed on the hall plate, where the hall element is the hall plate probe. The hall element on the hall plate can induce a periodically changing magnetic field and convert a periodically changing magnetic field intensity signal into a periodically changing electrical signal, so as to record the movement information such as the number of rotations and the rotation angle of the rotating member 121 during rotation.

Of course, the rotating member 121 in this embodiment may be fixed coaxially with the driving member 111 of the clutch device 11. Preferably, the embodiment adopts an arrangement mode that the rotating member 121 and the driven member 112 of the clutch device 11 are coaxially fixed.

In addition, as shown in fig. 1 and 2, a rail mounting opening 100 for mounting a rail of a motorized window shade is further formed at one end of the transmission housing 10, so that the transmission housing 1 can be easily assembled with the rail of the motorized window shade.

In order to realize the connection between the stroke detection device 12 in the transmission case and the control circuit board of the motor 2, referring to fig. 2 and 5, the transmission case 10 of this embodiment is further provided with a first metal contact 13 connected with the stroke detection device 12, and the motor 2 is provided with a second metal contact 21 electrically contacted with the first metal contact 13. Among them, referring to fig. 5, the motor 2 of this embodiment includes:

a motor housing 20 having the second metal contact 21;

the driving motor 21 is positioned in the motor housing 20, and the driving motor 21 is responsible for driving the driving piece 111 of the clutch device 11 to rotate;

a control circuit board 22 located inside the motor housing 20, the control circuit board 22 being connected to the driving motor 21; wherein the control circuit board 22 is connected with the second metal contact 21. The control circuit board 22 may also be provided on the outside of the motor housing 20 as needed.

Therefore, after the first metal contact 13 of the transmission case 1 is matched and electrically contacted with the second metal contact 21 on the motor shell 20, the stroke detection device 12 in the transmission case is in communication connection with the control circuit board in the motor 2, so that the control circuit board 22 can conveniently obtain the moving distance of the sunshade curtain of the electric window curtain according to the data processing detected by the stroke detection device. In particular, the first metal contact 13 here may be located on the outer side of the bottom of the transmission housing 10.

Of course, the transmission housing 10 also has a hook structure 14 for hanging the curtain.

In order to facilitate the assembly between the transmission case 1 and the motor 2 and the subsequent maintenance needs, the transmission case has a matching structure 15 which is detachably connected with the motor, namely the transmission case and the motor are detachably connected together.

After the transmission case of the embodiment is assembled with the motor of the motorized window shade, after the motor 2 is started to rotate, the driving part 111 of the clutch device 11 in the transmission case 1 rotates along with the motor 2, when the driven part 112 rotates along with the driving part 111, the rotating part 121 rotates along with the driven part 112, each magnet 121 on the rotating part 121 rotates along with the driven part, the detection probe 122 arranged in the transmission case shell 10 can continuously detect the magnetic field intensity change generated by the magnet on the driven part 112, then the control circuit board 22 of the motor can obtain the number of turns of the driven part which have been rotated according to the detected magnetic field intensity, and then the distance of the sunshade curtain of the motorized window shade moving along the track can be accurately calculated according to the number of turns of the driven part which have been rotated. Here, the clutch device 11 and the stroke detection device 12 are disposed in the transmission case 10, instead of being disposed in the motor case as in the conventional electric curtain structure, so that the length of the motor case can be effectively shortened, and the faulty clutch device and stroke detection device can be conveniently replaced or repaired. Different from the structure of the first transmission case, in the second transmission case provided in this embodiment, a rotating member is also provided in the transmission case housing 10 of the transmission case, the rotating member and the driven member 112 are coaxially driven, a magnetic field strength detection probe is provided in the motor assembled in cooperation therewith, and the rotating member in the transmission case housing 10 cooperates with the magnetic field strength detection probe in the motor to form a stroke detection device for detecting the displacement distance of the sunshade curtain. That is, a part of the stroke detection device is located on the transmission case, and the other part of the stroke detection device is arranged on the motor.

Of course, according to actual requirements, the rotating member 121 may be provided with a grating or a reflective strip, and the detection probe 122 disposed near the rotating member 121 may be a light-sensitive sensor, so that the detection probe 122 senses the electrical signal with a periodic variation generated when the rotating member rotates by detecting the light variation of the grating or the reflective strip on the rotating member.

Referring to fig. 6, the embodiment provides a motorized window shade to which the first transmission case is applied. The electric curtain comprises a motor 2 and a track 3, and a transmission case 1 is detachably connected with the motor 2.

After the motor 2 of the electric curtain is started to rotate, the motor 2 drives the clutch device 11 of the transmission case 1 to rotate, the clutch device 11 drives the sunshade curtain of the electric curtain to move along the track 3 of the electric curtain, and the stroke detection device 12 in the transmission case 1 detects the displacement distance of the sunshade curtain. Because the clutch device of the electric curtain is arranged in the transmission case shell, and the clutch device is not arranged in the motor shell, the length of the motor shell can be effectively shortened, and the clutch device with faults can be conveniently replaced or repaired. Certainly, because transmission case and motor are in the same place for detachably connecting, make things convenient for the equipment between transmission case and the motor like this, the convenience is dismantled both and is carried out the maintenance.

It should be noted that, because the clutch device 11 and the stroke detection device 12 of the motorized window shade are both disposed in the transmission case 10, the clutch device 11 and the stroke detection device 12 are not disposed in the motor housing 20 as in the conventional motorized window shade, which can effectively shorten the length of the motor housing, and facilitate replacement or repair of the clutch device and the stroke detection device that have faults.

In addition, the embodiment also provides a motorized window shade applying the second transmission case. The electric curtain also comprises a motor 2 and a track 3, and the transmission case 1 is detachably connected with the motor 2.

After the motor 2 of the electric curtain is started to rotate, the motor 2 drives the clutch device 11 of the transmission case 1 to rotate, the clutch device 11 drives the sunshade curtain of the electric curtain to move along the track 3 of the electric curtain, the magnetic field intensity detection probe in the motor 2 detects the magnet intensity generated by each magnet 121 arranged on the rotating piece 121, and the control circuit board 22 in the motor obtains the moving distance of the sunshade curtain along with the track. Because the clutch device of the electric curtain is arranged in the transmission case shell, and the clutch device is not arranged in the motor shell, the length of the motor shell can be effectively shortened, and the clutch device with faults can be conveniently replaced or repaired. Of course, the transmission case and the motor are detachably connected, so that the transmission case and the motor are convenient to assemble and maintain after being disassembled.

Although preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.