CN222992051U - Transmission box and electric curtain - Google Patents
Transmission box and electric curtain Download PDFInfo
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- CN222992051U CN222992051U CN202422401953.0U CN202422401953U CN222992051U CN 222992051 U CN222992051 U CN 222992051U CN 202422401953 U CN202422401953 U CN 202422401953U CN 222992051 U CN222992051 U CN 222992051U
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Abstract
本实用新型是关于一种传动箱及电动窗帘，传动箱包括传动箱体和安装于所述传动箱体内的至少一组传动组件。所述传动组件包括用于连接驱动源的输入转件和用于连接输出皮带的传动轮，所述输入转件的中心轴线和所述传动轮的中心轴线重合，所述输入转件和所述传动轮传动连接，所述输入转件相对于所述传动轮轴向滑动，所述输入转件和所述传动轮之间设置有弹性件，所述输入转件受到所述弹性件朝向所述传动箱体外伸出的弹性力。输出转件可以活动伸缩，在驱动源对接过程中能够沿轴向活动直至抵接位置完成，实现自动对接的效果，提高传动箱的安装便捷性及传动的可靠性。
The utility model relates to a transmission box and electric curtains, wherein the transmission box includes a transmission box body and at least one transmission assembly installed in the transmission box body. The transmission assembly includes an input rotating member for connecting a driving source and a transmission wheel for connecting an output belt, wherein the central axis of the input rotating member coincides with the central axis of the transmission wheel, the input rotating member and the transmission wheel are in transmission connection, the input rotating member slides axially relative to the transmission wheel, an elastic member is provided between the input rotating member and the transmission wheel, and the input rotating member is subjected to an elastic force of the elastic member extending toward the outside of the transmission box body. The output rotating member can be flexibly extended and retracted, and can move axially until the abutment position is completed during the docking process of the driving source, thereby achieving an automatic docking effect and improving the installation convenience of the transmission box and the reliability of the transmission.
Description
Technical Field
The utility model relates to the technical field of shading, in particular to an electric curtain, and especially relates to a transmission case and an electric curtain.
Background
The electric curtain is used as an important component of the intelligent home system, and the design and the functions of the electric curtain are continuously evolved so as to adapt to the convenience and the intelligent requirements of modern life. Wherein, the motor is as the power source, and the performance of motor directly influences the operation effect and the life of (window) curtain. The design of the guide rail needs to take into account the load bearing, stability and ease of installation. The cooperation of the belt and the pulley ensures that the curtain is opened and closed smoothly.
In the motorized window treatment system, the detachable connection of the motor housing and the gear box is designed to facilitate maintenance and upgrade. However, when the motor shaft and the transmission case are in butt joint, the plug-in parts of the shaft and the groove are required to be precisely matched, the angles are required to be adjusted consistently, and the assembly difficulty is high. When the motor shaft is provided with the floating butt joint mechanism, the technical problems that the whole mechanism of the motor box is huge and the installation space and the attractiveness are affected are easily caused, so improvement is needed.
Disclosure of utility model
In order to overcome the problems in the related art, the embodiment of the utility model provides a transmission case and an electric curtain, which are used for solving the technical problems of large butting difficulty and huge motor case structure.
According to a first aspect of an embodiment of the present utility model, there is provided a gearbox comprising a gearbox body and at least one set of drive components mounted within the gearbox body;
The transmission assembly comprises an input rotating member used for being connected with a driving source and a transmission wheel used for being connected with an output belt, the central axis of the input rotating member coincides with the central axis of the transmission wheel, the input rotating member is in transmission connection with the transmission wheel, the input rotating member axially slides relative to the transmission wheel, an elastic member is arranged between the input rotating member and the transmission wheel, and the input rotating member is subjected to elastic force of the elastic member extending outwards towards the transmission box body.
In an embodiment, the driving wheel is provided with a driving cavity, at least part of the input rotating member is inserted in the driving cavity in a sliding manner, and the elastic member is positioned in the driving cavity and elastically pushes against the input rotating member.
In one embodiment, the wall surface of the transmission cavity is provided with a spline groove, and the input rotary piece is provided with a spline shaft matched with the transmission cavity.
In an embodiment, the device further comprises a guide post, one end of the guide post is fixedly connected with the input rotating piece, the other end of the guide post is connected with the driving wheel in a sliding mode, and the elastic piece is sleeved on the guide post.
In one embodiment, the end of the guide post is provided with a stop collar.
In one embodiment, the transmission case is provided with a mounting shaft, and the transmission wheel is rotatably connected to the mounting shaft.
In an embodiment, the driving wheel comprises a belt wheel part and a driving part protruding out of the belt wheel part, the belt wheel part is connected with the mounting shaft through a driving bearing, and the driving part is in driving connection with the input rotating piece.
In one embodiment, the transmission case further comprises a locking member mounted to the transmission case, the locking member being provided with a guide cavity, and the input rotary member being slidably defined in the guide cavity.
In one embodiment, two sets of transmission components are arranged in parallel in the transmission box body, and the transmission wheels of the two sets of transmission components have a height difference.
According to a second aspect of the embodiment of the utility model, there is provided a motorized window treatment, including a motor assembly, a track device and a transmission case as described above, where the motor assembly is provided with a power output shaft corresponding to the transmission assembly, and the power output shaft is in plug-in fit with the input rotary member.
The technical scheme provided by the embodiment of the utility model has the beneficial effects that the elastic piece elastically compresses the input rotating piece and the driving wheel so that the output rotating piece can relatively slide and stretch along the axial direction, and therefore, the tight fit is kept when the transmission case is in butt joint with the driving source. And moreover, the output rotating piece can stretch out and draw back movably, can move along the axial direction until the abutting position is completed in the abutting process of the driving source, so that the effect of automatic abutting is realized, and the installation convenience and the transmission reliability of the transmission case are improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
Fig. 1 is a schematic view illustrating a structure of a motorized window treatment according to an embodiment.
FIG. 2 is an assembled schematic diagram illustrating a motor assembly and a gear box according to one embodiment.
FIG. 3 is a schematic partial cross-sectional view illustrating assembly of a motor assembly and a transmission according to one embodiment.
Fig. 4 is an enlarged schematic view at a in fig. 3.
Fig. 5 is an exploded schematic view showing a transmission case according to an embodiment.
Fig. 6 is an exploded schematic view showing a transmission assembly according to one embodiment.
In the drawings, the transmission case 10, the transmission case 11, the lower case 111, the upper case 112, the mounting shaft 1121, the cover 113, the upper transmission chamber 114, the lower transmission chamber 115, the transmission assembly 12, the input rotary member 121, the transmission wheel 122, the pulley portion 1221, the transmission portion 1222, the transmission chamber 1223, the elastic member 123, the locking member 124, the guide chamber 1241, the second transmission group 125, the first transmission group 126, the guide post 127, the stopper collar 1271, the transmission bearing 128, the motor assembly 20, and the rail device 30 are illustrated.
Detailed Description
In which the drawings are for illustrative purposes only and are not intended to be construed as limiting the utility model, and in which certain elements of the drawings may be omitted, enlarged or reduced in order to better illustrate embodiments of the utility model, and not to represent actual product dimensions, it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present utility model, it should be understood that, if the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is merely for convenience in describing the present utility model and simplifying the description, and it is not indicated or implied that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for illustration and are not to be construed as limitations of the present utility model, and that the specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
In the description of the present utility model, unless explicitly stated or limited otherwise, the term "coupled" or the like should be interpreted broadly, as referring to a connection between two components, for example, a fixed connection, a removable connection, or a combination, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediary, a communication between two components, or an interaction between two components. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 6, the present utility model provides a transmission case 10, where the transmission case 10 is used to connect a driving source of a motorized window treatment, and the driving source may be configured as a single-axis output power mechanism or a dual-axis output power mechanism.
The transmission case 10 comprises a transmission case body 11 and at least one set of transmission assemblies 12 mounted in the transmission case body 11, the transmission case body 11 being adapted to be connected to the track device 30 and to define a transmission belt. The transmission assembly 12 is rotatably installed on the transmission box 11 and is connected with the transmission belt, so that power output by the driving source is transmitted to the transmission belt through the transmission assembly 12, and the transmission belt can drive the curtain to open and close.
Optionally, a group of transmission components 12 is arranged in the transmission box 11, and the transmission components 12 can drive one or two transmission belts to open and close. Optionally, two sets of transmission assemblies 12 are disposed in the transmission case 11, and each set of transmission assemblies 12 can drive the transmission belt to move. It is further preferred that the two sets of drive assemblies 12 are spaced apart in parallel and that the connected drive belts have a height differential so as to effect a staggered drive. Wherein, two groups of transmission components 12 are arranged in parallel in the transmission box 11, and the transmission wheels 122 of the two groups of transmission components 12 have a height difference.
The transmission assembly 12 includes an input rotary member 121 for connecting a driving source and a transmission wheel 122 for connecting an output belt, and a central axis of the input rotary member 121 and a central axis of the transmission wheel 122 coincide. The input rotary member 121 and the driving wheel 122 are coaxially arranged, the input rotary member 121 is in driving connection with the driving wheel 122, and the input rotary member 121 axially slides relative to the driving wheel 122.
The input rotary member 121 and the driving wheel 122 are in driving engagement, and direct engagement or indirect engagement can be adopted. In the direct transmission fit mode, for example, the input rotary member 121 and the driving wheel 122 are in transmission fit by adopting a tooth-shaped complementary structure, that is, a plurality of tooth-shaped grooves are formed at the end of the input rotary member 121, and a plurality of matched tooth-shaped bosses are formed in the axial direction of the driving wheel 122, so that the tooth-shaped bosses are inserted into the corresponding tooth-shaped grooves, gear shaping fit is realized, and axial sliding is realized. In a further alternative embodiment, the input rotor 121 and the drive wheel 122 are in a plug-in fit, and the plug-in locations of both are provided with a drive surface. I.e. the input rotor 121 is inserted into the driving wheel 122, or the driving wheel 122 is inserted into the input rotor 121. Preferably, the input rotary member 121 and the driving wheel 122 are connected by a shaft and a hole, and the hole may be a polygonal hole or a splined hole, the polygonal hole is arranged on the driving wheel 122, and the section of the shaft is also a polygonal or splined shaft.
An elastic member 123 is provided between the input rotary member 121 and the driving wheel 122, and the input rotary member 121 receives an elastic force of the elastic member 123 extending toward the outside of the driving case 11. The elastic member 123 is preloaded by the input rotary member 121 and the driving wheel 122, so that an elastic preload is formed between the input rotary member 121 and the driving wheel 122, and the elastic preload can eliminate axial transmission between the input rotary member 121 and the driving wheel 122. Preferably, the elastic member 123 is provided as a compression spring.
In addition, when the driving source is connected to the input rotary member 121, the input rotary member 121 is in elastic pretightening force and axially sliding fit, so that the power output shaft of the driving source is randomly inserted and can be adjusted to a transmission fit position after rotating, manual alignment is not needed, and convenience in assembly and effectiveness in transmission are improved. The output rotary member can slide relatively in the axial direction to be telescopic, so that the transmission case 10 is kept tightly attached when being abutted with the driving source.
As shown in fig. 3 to 6, the input rotary member 121 and the driving wheel 122 are in plug-in sliding fit, and a circumferential limit connection is arranged between the input rotary member and the driving wheel. In one embodiment, the driving wheel 122 is provided with a driving cavity 1223, at least part of the input rotary member 121 is slidably inserted into the driving cavity 1223, and the elastic member 123 is located in the driving cavity 1223 and elastically pushes against the input rotary member 121. The inner wall of the transmission cavity 1223 is provided with a transmission portion 1222, the transmission portion 1222 is provided as at least one transmission surface or one or more tooth grooves, and the portion of the input rotor 121 inserted into the transmission cavity 1223 is provided with a mating portion matching the transmission portion 1222 to achieve a plug-in mating and axial sliding.
In a preferred embodiment, the walls of the drive chamber 1223 are configured as spline grooves and the input rotor 121 is configured as a spline shaft with mating drive surfaces. The input rotary piece 121 and the transmission cavity 1223 are matched by adopting a spline structure, so that the transmission is stable, and the axial sliding smoothness is good. Preferably, one end of the elastic member 123 abuts against the bottom surface of the transmission chamber 1223, and the other abuts against the end surface of the input rotary member 121, thereby achieving elastic abutment.
In an embodiment, the transmission case 10 further includes a guiding column 127, one end of the guiding column 127 is fixedly connected to the input rotating member 121, the other end is slidably connected to the driving wheel 122, and the elastic member 123 is sleeved on the guiding column 127. The guide column 127 is fixedly connected with the input rotary member 121, and both constitute a coaxial structure. The elastic member 123 is located between the guide post 127 and the transmission chamber 1223, so that the movable range of the elastic member 123 is controllable.
The guide post 127 passes out of the drive wheel 122 and is slidably connected to the drive wheel 122. Further, the end of the guide post 127 is provided with a stop collar 1271. The sliding wheel connecting guide post 127 is provided with a sliding hole, and the outer contour dimension of the stop collar 1271 is larger than the size of the sliding hole, so that the dimension of the input rotary member 121 far away from the driving wheel 122 is limited by the position and the dimension of the stop collar 1271, thereby facilitating adjustment of the spacing distance of the driving wheel 122 relative to the input rotary member 121 and precompression of the elastic member 123.
The transmission case 10 is provided with a thin-walled structure, a multi-chamber structure which can be composed of two or more thin-walled structural members, and different transmission assemblies 12 can be distributed in different chambers to be respectively supported and connected. Optionally, the gearbox 10 is provided with a mounting shaft 1121, and the drive wheel 122 is rotatably connected to the mounting shaft 1121. The mounting shaft 1121 is cylindrical or tubular in shape, and the mounting shaft 1121 is inserted into the driving wheel 122 and constitutes a rotatable connection. Preferably, a drive bearing 128 is provided between the mounting shaft 1121 and the drive wheel 122 to increase rotational flexibility. Further, the mounting shaft 1121 is provided as a stepped shaft to which the transmission bearing 128 is mounted and against which the inner race abuts, having constituted axial positioning.
In one embodiment, the drive wheel 122 includes a pulley portion 1221 and a drive portion 1222 protruding from the pulley portion 1221, the pulley portion 1221 being coupled to the mounting shaft 1121 by a drive bearing 128, the drive portion 1222 being drivingly coupled to the input rotor 121. The transmission portion 1222 and the pulley portion 1221 form a stepped structure, the transmission portion 1222 extends toward the input rotary member 121, and the pulley portion 1221 is sized to fit the size of the transmission belt, which facilitates uniform assembly of the transmission belt. The length of the transmission portion 1222 of different transmission assemblies 12 can be flexibly set according to different length specifications, and can be connected to the input rotor 121 at the same height.
The guide posts 127 define the separation distance between the drive wheel 122 and the input rotor 121 such that the drive assembly 12 forms a unitary pre-installation structure.
In one embodiment, the transmission case 10 further includes a locking member 124 mounted to the transmission case body 11, the locking member 124 being provided with a guide chamber 1241, and the input rotary member 121 being slidably defined in the guide chamber 1241. The locking member 124 is mounted to the transmission case 11, the opening of the guide chamber 1241 faces the input rotary member 121 side, and the input rotary member 121 is inserted into the guide chamber 1241. The guide cavity 1241 defines a circumferential range of motion of the input rotor 121, wherein the input rotor 121 is slidable and rotatable along the guide cavity 1241. Preferably, the radial partial protrusion of the input rotary member 121 forms a limit ring, the limit ring and the transmission portion 1222 of the input rotary member 121 form a step structure, and the limit ring is slidably matched with the cavity wall of the guide cavity 1241, so that the sliding matching area can be reduced, and the sliding flexibility is improved.
Further, the portion of the locking member 124 beyond the transmission case 11 is provided with at least one locking projection radially projecting, and the input rotary member 121 is movably mounted to the locking member 124. The locking lug is a non-circular lug structure and the locking member 124 and locking lug are rotated after being inserted into the motor assembly 20 to lock the transmission case 10 and the motor assembly 20 together.
In one embodiment, the transmission case 10 includes a lower case 111, an upper case 112, and a cover plate 113, and the partition is detachably connected to the upper case 112. The transmission assemblies 12 are provided with two groups, and the two groups of transmission assemblies 12 are respectively provided with a first transmission group 126 and a second transmission group 125 in parallel at intervals. The upper case 112 includes an upper transmission chamber 114 and a lower transmission chamber 115, and a partition plate is provided between the upper transmission chamber 114 and the lower transmission chamber 115. The partition plate is formed with a mounting shaft 1121 protruding therefrom, the first transmission group 126 is mounted to the upper case 112, and a pulley portion 1221 of the first transmission group 126 is located in the lower transmission chamber 115. The cover plate 113 is formed with another mounting shaft 1121 protruding therefrom, and the second transmission group 125 is mounted to the mounting shaft 1121 of the cover plate 113 such that the pulley portion 1221 of the second transmission group 125 is positioned in the upper transmission chamber 114. The partition plate is provided with a clearance hole at a position corresponding to the second transmission group 125, and the second transmission group 125 penetrates into the upper case 112 along the clearance hole.
The two locking pieces 124 are installed on the lower case 111 at intervals, and the lower case 111 is fastened on the outer side of the upper case 112, so that the input rotating pieces 121 of the two sets of transmission assemblies 12 are inserted into the corresponding locking pieces 124, thereby realizing lower sliding limitation and convenient assembly.
As shown in fig. 1 to 2, the transmission case 10 disclosed in the above embodiment is applied to a motorized window treatment, wherein the motorized window treatment includes a motor assembly 20, a rail device 30 and the transmission case 10, and the motor assembly 20 is provided with a power output shaft corresponding to the transmission assembly 12, and the power output shaft is in plug-in fit with an input rotary member 121. The power output shaft is in plug-in fit with the input rotary member 121 and transmits torque force to achieve power transmission. Preferably, two groups of power output shafts are arranged, the two groups of power output shafts are independently controlled, the transmission case 10 is provided with two groups of corresponding transmission assemblies 12, floating butt joint of the input rotating piece 121 is realized through the elastic piece 123, and convenience in connection is improved.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422401953.0U CN222992051U (en) | 2024-09-30 | 2024-09-30 | Transmission box and electric curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422401953.0U CN222992051U (en) | 2024-09-30 | 2024-09-30 | Transmission box and electric curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222992051U true CN222992051U (en) | 2025-06-17 |
Family
ID=95998569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422401953.0U Active CN222992051U (en) | 2024-09-30 | 2024-09-30 | Transmission box and electric curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222992051U (en) |
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2024
- 2024-09-30 CN CN202422401953.0U patent/CN222992051U/en active Active
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