Single-control transmission adjusting device and electric curtain

Abstract

The utility model relates to a single-control transmission adjusting device and an electric curtain, the single-control transmission adjusting device is assembled on a transmission box device, the single-control transmission adjusting device is used for connecting a driving mechanism, and the transmission box device is provided with a transmission box body, a first transmission assembly and a second transmission assembly. The single-control transmission adjusting device comprises a push rod assembly, a front gear, a rear gear, a first pre-pressing mechanism and a second pre-pressing mechanism, the push rod assembly is connected with the driving mechanism, the front gear and the rear gear are slidably connected to the push rod assembly, and the two ends of the first pre-pressing mechanism elastically abut against the push rod assembly and the first transmission assembly respectively. The two ends of the second pre-pressing mechanism elastically abut against the front gear and the rear gear respectively, the push rod assembly is provided with a stop part for limiting the rear gear, and the push rod assembly is rotationally installed on the transmission box body. The single-control transmission adjusting device is connected with the driving mechanism to achieve axial movement and rotation, the transmission mechanism is simple and ingenious, and the needed installation space is small.

Description

Technical Field

[0001] The utility model relates to the technical field of light shielding, in particular to an electric curtain, and more particularly to a single-control transmission adjustment device and an electric curtain. Background Art

[0002] The curtain cloth of the electric curtain has the functions of opening and closing and light regulation. Correspondingly, the electric curtain is provided with an opening and closing power mechanism and a light regulation power mechanism to respectively execute the opening and closing and light regulation power outputs. The power mechanism with dual power outputs not only requires a large layout structure in space, but also correspondingly increases at the connection parts of the transmission box structure and the track device. For example, the Chinese published document CN216932693U discloses a dual-power structure for a curtain, in which the opening and closing driving component and the light regulation driving component are independently arranged in terms of structure.

[0003] However, the driving parts of the electric curtain are arranged side by side or vertically on the track device. The installation space required for the driving parts mainly depends on the internal mechanism layout and the transmission mechanism. There are technical problems of complex transmission structure and large installation space for the independently arranged opening and closing driving component and the light regulation driving component, so improvement is needed. Summary of the Utility Model

[0004] To overcome the problems existing in the related art, an embodiment of the utility model provides a single-control transmission adjustment device and an electric curtain to solve the technical problems of large occupied space structure and complex transmission structure.

[0005] According to the first aspect of the embodiment of the utility model, a single-control transmission adjustment device is provided. The single-control transmission adjustment device is assembled in a transmission box device and is used to connect a driving mechanism. The transmission box device is provided with a transmission box body, a first transmission component and a second transmission component. The driving mechanism is used to output linear reciprocating movement and rotation:

[0006] The single-control transmission adjustment device includes a push rod assembly, a front gear, a rear gear, a first preloading mechanism and a second preloading mechanism. The push rod assembly is connected to the driving mechanism. The front gear and the rear gear are slidably connected to the push rod assembly. Two ends of the first preloading mechanism respectively elastically push against the push rod assembly and the first transmission component. Two ends of the second preloading mechanism respectively elastically push against the front gear and the rear gear. The push rod assembly is provided with a stop portion for limiting the rear gear. The push rod assembly is rotatably installed in the transmission box body;

[0007] Wherein, when the driving mechanism pushes the push rod assembly to linearly move in the first direction, the push rod assembly pushes the front gear to separate from the first transmission component, and the rear gear is meshed and drivingly connected to the second transmission component under the pressure of the second preloading mechanism;

[0008] When the driving mechanism pushes the push rod assembly to linearly move in the second direction, the front gear is meshed and drivingly connected with the first transmission assembly under the pressure of the second preloading mechanism, and the rear gear is separated from the second transmission assembly under the drive of the stopping portion. The first direction and the second direction are opposite directions.

[0009] In one embodiment, the push rod assembly includes a transmission member connected to the driving mechanism and a push rod fixed to the transmission member. The transmission member is provided with a sleeve portion, and the sleeve portion passes through the first preloading mechanism and abuts against the front gear.

[0010] In one embodiment, the first preloading mechanism elastically abuts against the transmission member and the first transmission assembly, and the first preloading mechanism is slidably and cooperatively connected with the transmission member.

[0011] In one embodiment, the first preloading mechanism includes a connecting member and a first compression spring. The connecting member is slidably connected to the transmission member. Two ends of the first compression spring respectively and elastically abut against the transmission member and the connecting member, and the connecting member abuts against the first transmission assembly.

[0012] In one embodiment, at least one sliding rib is provided on one of the connecting member and the transmission member, and a matching sliding groove is provided on the other one. The sliding rib and the sliding groove cooperate with each other to transmit torque force.

[0013] In one embodiment, the front gear is provided with a front boss facing the rear gear, the rear gear is provided with a rear boss facing the front gear, the second preloading mechanism is provided as a second compression spring, and two ends of the second compression spring are respectively connected and defined by the front boss and the rear boss.

[0014] In one embodiment, the push rod assembly is provided with at least one transmission surface, and the front gear and the rear gear are provided with connecting holes matching the transmission surface.

[0015] In one embodiment, the first transmission assembly includes a first transmission gear. The first transmission gear is provided with a first internal tooth hole and an arc-shaped rib protruding annularly from the end face. The first preloading mechanism elastically abuts against the arc-shaped rib, and the front gear is cooperatively connected with the first internal tooth hole.

[0016] In one embodiment, the transmission box body is provided with a rotating column, the push rod assembly is provided with a central hole, and the rotating column and the central hole are inserted and rotatably and cooperatively connected.

[0017] The second aspect of the present utility model discloses an electric curtain, which includes the single-control transmission adjustment device as described above. The electric curtain further includes a transmission box device, a guide rail assembly, and a driving mechanism. The single-control transmission adjustment device is installed on the transmission box device, and the driving mechanism is correspondingly drivingly connected to the first transmission assembly or the second transmission assembly through the single-control transmission adjustment device.

[0018] The technical solution provided by the embodiment of the present utility model may include the following beneficial effects: The driving mechanism drives the push rod assembly to move linearly back and forth. The push rod assembly and the stopping part combine the elastic pre-tightening forces of the first pre-pressing mechanism and the second pre-pressing mechanism to realize the position switching output of the front gear and the rear gear and switch the output part of the transmission torque. The switching is flexible and the reset effect is good. The single-control transmission adjustment device is connected to the driving mechanism to realize axial movement and rotation. The transmission mechanism is concise and ingenious, and the required installation space is small.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present utility model and used together with the specification to explain the principles of the present utility model.

[0021] Figure 1 is a schematic structural diagram showing the connection between the single-control transmission adjustment device and the driving mechanism according to an exemplary embodiment.

[0022] Figure 2 is a schematic structural diagram showing the single-control transmission adjustment device according to an exemplary embodiment.

[0023] Figure 3 is an exploded structural diagram showing the single-control transmission adjustment device according to an exemplary embodiment.

[0024] Figure 4 is a schematic structural diagram showing the single-control transmission adjustment device from another angle according to an exemplary embodiment.

[0025] Figure 5 is an exploded schematic diagram showing the push rod assembly and the first pre-pressing mechanism according to an exemplary embodiment.

[0026] Figure 6 is an enlarged cross-sectional view showing the assembly of the single-control transmission adjustment device and the transmission box device according to an exemplary embodiment.

[0027] Figure 7 is a schematic structural diagram showing the electric curtain according to an exemplary embodiment.

[0028] In the figure, there is a single-control drive adjustment device 10; a push rod assembly 11; a transmission member 111; a sliding groove 1111; a sleeve portion 1112; a pipe body portion 1113; a push rod 112; a transmission surface 1121; a stop portion 113; a first preloading mechanism 12; a connecting member 121; a sliding rib 1211; a first compression spring 122; a front gear 13; a connecting hole 131; a rear gear 14; a second preloading mechanism 15; a drive mechanism 20; a first transmission assembly 30; a first transmission gear 31; a first internal tooth hole 311; an arc-shaped rib 312; a second transmission assembly 40; a second transmission gear 41; a transmission box body 50; a rotating column 51; a guide rail assembly 60. Detailed implementation mode

[0029] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation of this patent; in order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] In the drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, if terms such as "connection" are used to indicate the connection relationship between components, this term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Such as Figures 1 to 3 、 Figure 6As shown in the figure, the present utility model provides a single-control transmission adjustment device. The single-control transmission adjustment device 10 is assembled in a transmission box device to constitute a transmission power switching function within the transmission box device. The single-control transmission adjustment device 10 is used to connect a driving mechanism 20, and the driving mechanism 20 is used to output linear reciprocating movement and rotation, so that the single-control transmission adjustment device 10 can achieve axial linear movement and rotational movement around the axis.

[0033] The transmission box device is provided with a transmission box body 50, and a first transmission component 30 and a second transmission component 40 are installed at intervals within the transmission box body 50. Among them, the first transmission component 30 is provided with a first transmission gear 31, the second transmission component 40 is provided with a second transmission gear 41, and the first transmission gear 31 and the second transmission gear 41 are arranged at intervals and respectively cooperate with the single-control transmission adjustment device 10 for transmission to constitute power transmission output.

[0034] The single-control transmission adjustment device 10 includes a push rod assembly 11, a front gear 13 and a rear gear 14 slidably installed on the push rod assembly 11. The push rod assembly 11 is connected to the driving mechanism 20 and realizes axial movement or rotation under the drive of the driving mechanism 20. Among them, when the push rod assembly 11 moves axially, the axial position switching of the front gear 13 and the rear gear 14 is realized; when the push rod assembly 11 rotates, the front gear 13 and the rear gear 14 rotate and the torque force of one of them is transmitted and output.

[0035] The first preloading mechanism 12 is set as an elastic telescopic structure. The two ends of the first preloading mechanism 12 respectively elastically push against the push rod assembly 11 and the first transmission component 30, so that an appropriate elastic pre-tightening force exists between the push rod assembly 11 and the first transmission component 30. The driving mechanism 20 is connected to the push rod assembly 11, and the first preloading mechanism 12 can keep the push rod assembly 11 and the driving mechanism 20 in a tightly transmitted connection.

[0036] The second preloading mechanism 15 is set as an elastic telescopic structure. Optionally, the second preloading mechanism 15 can be set as a spring; or, the second preloading mechanism 15 can be set as an elastic structure with an elastic part, such as an elastic ring, and connecting parts 121 are arranged at both ends of the spring, etc.

[0037] In a preferred embodiment, the front gear 13 is provided with a front boss facing the rear gear 14, the rear gear 14 is provided with a rear boss facing the front gear 13, the second preloading mechanism 15 is set as a second compression spring, and the two ends of the second compression spring are respectively connected and limited to the front boss and the rear boss. The front boss and the rear boss limit the two ends of the second compression spring to keep the conveying direction of the elastic pre-tightening force balanced and the installation position of the second compression spring stable.

[0038] Both ends of the second preloading mechanism 15 elastically push against the front gear 13 and the rear gear 14 respectively, so that the positions of the front gear 13 and the rear gear 14 can be relatively compressed and movable, and can maintain a distance and have an elastic preloading force for reset. The push rod assembly 11 is provided with a stop portion 113 that limits the rear gear 14. The rear gear 14 slides along the push rod assembly 11 and stops at the stop portion 113 to form the maximum moving distance of the rear gear 14. At the same time, when the push rod assembly 11 moves axially, the stop portion 113 can drive the rear gear 14 to move, so that the rear gear 14 moves with the push rod assembly 11. Among them, the push rod assembly 11 is rotatably installed on the transmission box body 50.

[0039] The working process is as follows: When the driving mechanism 20 pushes the push rod assembly 11 to move linearly in the first direction, the push rod assembly 11 pushes the front gear 13 to separate from the first transmission assembly 30, and the rear gear 14 is engaged and driven with the second transmission assembly 40 under the pressure of the second preloading mechanism 15. When the driving mechanism 20 pushes the push rod assembly 11 to move linearly in the second direction, the front gear 13 is engaged and driven with the first transmission assembly 30 under the pressure of the second preloading mechanism 15, and the rear gear 14 is separated from the second transmission assembly 40 under the drive of the stop portion 113. The first direction and the second direction are opposite directions.

[0040] The rear gear 14 and the front gear 13 are set as movable structures and are both subject to the elastic preloading force of the second preloading mechanism 15. During the sliding process of the push rod assembly 11, the front gear 13 can be automatically aligned to the meshing and mating position of the first transmission gear 31; or the rear gear 14 can be automatically aligned to the meshing and mating position of the second transmission gear 41.

[0041] The driving mechanism 20 drives the push rod assembly 11 to move linearly back and forth. The push rod assembly 11 and the stop portion 113 combine the elastic preloading forces of the first preloading mechanism 12 and the second preloading mechanism 15 to realize the position switching output of the front gear 13 and the rear gear 14 and the switching of the output part of the transmission torque. The switching is flexible and the reset effect is good. The single-control transmission adjustment device 10 is connected to the driving mechanism 20 to realize axial movement and rotation. The transmission mechanism is simple and ingenious, and the required installation space is small.

[0042] Such as Figures 3 to 5As shown, the push rod assembly 11 is a shaft-shaped structural member, and the front gear 13 and the rear gear 14 are defined to be installed on the push rod assembly 11. Among them, the push rod assembly 11 includes a transmission member 111 connected to the driving mechanism 20 and a push rod 112 fixed to the transmission member 111. The transmission member 111 is provided with a sleeve portion 1112, and the sleeve portion 1112 passes through the first preloading mechanism 12 and abuts against the front gear 13. The front gear 13 and the rear gear 14 are defined between the transmission member 111 and the stop portion 113. The stop portion 113 is a stepped surface or a stop surface or a stop rib on the push rod 112. One end of the second preloading assembly pushes the front gear 13 towards the transmission member 111, and the other end pushes the rear gear 14 towards the stop portion 113. The outer diameter of the transmission member 111 is larger than the outer diameter of the push rod 112, forming a stepped structure. The transmission member 111 is fixed to the end of the push rod 112, and the sleeve portion 1112 extends along the axial direction of the push rod 112 and abuts against the front gear 13, so that when the push rod assembly 11 moves in the first direction, the front gear 13 is pushed away from the first transmission gear 31.

[0043] The front gear 13 and the rear gear 14 are slidably connected to the push rod 112, and the push rod 112 drives the front gear 13 and the rear gear 14 to rotate. Among them, the push rod assembly 11 is provided with at least one transmission surface 1121, and the front gear 13 and the rear gear 14 are provided with connection holes 131 that match the transmission surface 1121. The push rod 112 is provided with a transmission surface 1121 to form a complementary power transmission surface 1121. The push rod 112 is set as a spline shaft, a serrated shaft, or a rectangular shaft, and the transmission surface 1121 is a plane or a curved surface structure. The connection hole 131 is adapted to the cross-section of the push rod 112 to form a power transmission structure.

[0044] The transmission member 111 is installed at one end of the push rod 112 to form a flange-like structure. The first preloading mechanism 12 elastically abuts against the transmission member 111 and the first transmission assembly 30, and the first preloading mechanism 12 is slidably connected to the transmission member 111. The first preloading mechanism 12 pushes the transmission member 111 to elastically reset, so that the front gear 13 has a preloading tendency to cooperate with the connection of the first transmission assembly 30. The first preloading mechanism 12 is slidably connected to the transmission member 111, and the two form a sliding connection. Correspondingly, the sliding connection part forms a mutual limitation, so that the rotation of the first preloading mechanism 12 and the transmission member 111 is consistent.

[0045] Further, the first preloading mechanism 12 includes a connecting member 121 and a first compression spring 122. The connecting member 121 is slidably connected to the transmission member 111. Both ends of the first compression spring 122 elastically abut against the transmission member 111 and the connecting member 121 respectively. The connecting member 121 abuts against the first transmission assembly 30. Under the action of the elastic preloading force of the first compression spring 122, the transmission member 111 and the connecting member 121 elastically extend towards both ends, and the connecting member 121 is slidably connected to the transmission member 111 to form sliding consistency. Accordingly, the first compression spring 122 rotates with the connecting member 121 and the transmission member 111 and has no association with the push rod 112, so that the first compression spring 122 is stationary relative to the rotating member.

[0046] Preferably, both the connecting member 121 and the transmission member 111 are provided with tube body parts 1113 that are inserted and matched with each other. The tube body parts 1113 are provided with at least partially mutually transmitted transmission mating surfaces to realize the linear guiding movement and torque transmission synchronous movement of the connecting member 121 and the transmission member 111.

[0047] In an alternative embodiment, at least one sliding rib 1211 is provided on one of the connecting member 121 and the transmission member 111, and a matching sliding groove 1111 is provided on the other. The sliding rib 1211 and the sliding groove 1111 cooperate with each other to transmit torque force. The sliding rib 1211 and the sliding groove 1111 are mutually engaged, and the connecting member 121 and the transmission member 111 are inserted and matched with each other to form assembly positioning to prevent the first compression spring 122 from being exposed. The tube body part 1113 and the sleeve part 1112 provided on the connecting member 121 are of a concentric tube structure, and the first compression spring 122 surrounds the sleeve part 1112 and is located within the area surrounded by the tube body part 1113.

[0048] As Figures 3 to 6 shown, the first transmission assembly 30 includes a first transmission gear 31. The first transmission gear 31 is provided with a first internal tooth hole 311, and the front gear 13 is connected in cooperation with the first internal tooth hole 311. The push rod 112 passes through the center of the first transmission gear 31. The shape of the first internal tooth hole 311 and the shape of the front gear 13 are complementary to form a gear sliding insertion fit. Among them, when the first internal tooth hole 311 and the front gear 13 are aligned, the second preloading mechanism 15 directly pushes the front gear 13 into the first internal tooth hole 311. When the first internal tooth hole 311 and the front gear 13 are offset, the second preloading mechanism 15 pushes the front gear 13 against the first transmission gear 31 and maintains a preloading force, and the push rod 112 drives the front gear 13 to rotate until the front gear 13 is inserted into the first internal tooth hole 311, thereby realizing elastic transmission connection.

[0049] Based on the same principle, the second transmission gear 41 is provided with a second internal tooth hole. The push rod 112 passes through the center of the second transmission gear 41. The shape of the second internal tooth hole is complementary to the shape of the rear gear 14 to form a gear sliding plug-in fit. Among them, when the second internal tooth hole is aligned with the rear gear 14, the second preloading mechanism 15 directly pushes the rear gear 14 into the second internal tooth hole. When the second internal tooth hole and the rear gear 14 are offset, the second preloading mechanism 15 pushes the rear gear 14 against the second transmission gear 41 and maintains a pre-tightening force. The push rod 112 drives the rear gear 14 to rotate until the rear gear 14 is inserted into the second internal tooth hole, thereby realizing an elastic transmission connection.

[0050] Further, the first transmission gear 31 has an arc-shaped convex rib 312 protruding annularly from the end face. The first preloading mechanism 12 elastically abuts against the arc-shaped convex rib 312. The arc-shaped convex rib 312 is provided protruding around the end face of the first transmission gear 31 to form an annular convex rib. The connecting member 121 abuts against the arc-shaped convex rib 312, which can not only maintain the stability of the abutting connection position but also reduce the rotational resistance of the connecting member 121.

[0051] The other end of the push rod 112 is in sliding and rotational connection with the transmission box body 50. For example, the transmission box body 50 is provided with a counterbore structure for accommodating and supporting the push rod 112. In one embodiment, the transmission box body 50 is provided with a rotating column 51, and the push rod assembly 11 is provided with a central hole. The rotating column 51 and the central hole are in plug-in rotational connection. The rotating column 51 is of a cantilever column structure. The push rod 112 is connected to the rotating column 51 through the central hole, and the end of the push rod 112 is supported to maintain the rotational stability of the push rod 112.

[0052] Such as Figure 1 、 Figure 2 and Figure 7 As shown in

[0053] Other embodiments of the present utility model will be readily conceived by those skilled in the art after considering the specification and practicing the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present utility model and include well-known knowledge or conventional technical means in the technical field not disclosed in the present utility model. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present utility model are pointed out by the following claims.

[0054] It should be understood that the present utility model is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present utility model is only limited by the appended claims.

Claims

1. A single-control transmission adjustment device, the single-control transmission adjustment device (10) being mounted on a transmission box device, the single-control transmission adjustment device (10) being used to connect a drive mechanism (20), the transmission box device being provided with a transmission box body (50), a first transmission assembly (30) and a second transmission assembly (40), the drive mechanism (20) being used to output linear reciprocating movement and rotation, characterized in that: The single-control transmission adjustment device (10) comprises a push rod assembly (11), a front gear (13), a rear gear (14), a first pre-pressing mechanism (12) and a second pre-pressing mechanism (15); the push rod assembly (11) is connected to a driving mechanism (20); the front gear (13) and the rear gear (14) are slidably connected to the push rod assembly (11); two ends of the first pre-pressing mechanism (12) elastically push the push rod assembly (11) and the first transmission assembly (30); two ends of the second pre-pressing mechanism (15) elastically push the front gear (13) and the rear gear (14); the push rod assembly (11) is provided with a stopper (113) for limiting the rear gear (14); and the push rod assembly (11) can be rotatably mounted on the transmission housing (50); When the driving mechanism (20) pushes the push rod assembly (11) to move linearly in the first direction, the push rod assembly (11) pushes the front gear (13) to separate from the first transmission assembly (30), and the rear gear (14) is meshed and drivenly connected with the second transmission assembly (40) under the pressure of the second pre-pressing mechanism (15); When the driving mechanism (20) pushes the push rod assembly (11) to move linearly in the second direction, the front gear (13) is meshed and driven with the first transmission assembly (30) under the pressure of the second pre-pressing mechanism (15), and the rear gear (14) is separated from the second transmission assembly (40) under the drive of the stopper (113), and the first direction and the second direction are opposite directions.

2. The single-control transmission adjustment device according to claim 1, characterized in that: The push rod assembly (11) comprises a transmission member (111) connected to the drive mechanism (20) and a push rod (112) fixed to the transmission member (111); the transmission member (111) is provided with a sleeve portion (1112); the sleeve portion (1112) passes through the first pre-pressing mechanism (12) and pushes against the front gear (13).

3. The single-control transmission adjustment device according to claim 2, characterized in that: The first pre-pressing mechanism (12) elastically pushes the transmission member (111) and the first transmission assembly (30), and the first pre-pressing mechanism (12) is connected to the transmission member (111) in a sliding manner.

4. The single-control transmission adjustment device according to claim 3, characterized in that: The first pre-compression mechanism (12) comprises a connecting member (121) and a first compression spring (122); the connecting member (121) is slidably connected to the transmission member (111); two ends of the first compression spring (122) elastically push against the transmission member (111) and the connecting member (121) respectively; and the connecting member (121) pushes against the first transmission assembly (30).

5. The single-control transmission adjustment device according to claim 4, characterized in that: One of the connecting member (121) and the transmission member (111) is provided with at least one sliding rib (1211), and the other is provided with a matching sliding groove (1111); the sliding rib (1211) and the sliding groove (1111) cooperate with each other to transmit torque.

6. The single-control transmission adjustment device according to claim 1, characterized in that: The front gear (13) is provided with a front boss facing the direction of the rear gear (14), and the rear gear (14) is provided with a rear boss facing the direction of the front gear (13). The second pre-compression mechanism (15) is provided as a second compression spring, and the two ends of the second compression spring are respectively connected to the front boss and the rear boss.

7. The single-control transmission adjustment device according to claim 1, characterized in that: The push rod assembly (11) is provided with at least one transmission surface (1121), and the front gear (13) and the rear gear (14) are provided with connection holes (131) matching the transmission surface (1121).

8. The single-control transmission adjustment device according to claim 1, characterized in that: The first transmission assembly (30) comprises a first transmission gear (31), the first transmission gear (31) being provided with a first internal tooth hole (311) and an arcuate convex rib (312) protruding in an annular manner from an end surface, the first pre-pressing mechanism (12) being elastically abutted against the arcuate convex rib (312), and the front gear (13) being cooperatively connected with the first internal tooth hole (311).

9. The single-control transmission adjustment device according to claim 1, characterized in that: The transmission housing (50) is provided with a rotating column (51), the push rod assembly (11) is provided with a central hole, and the rotating column (51) and the central hole are plug-connected and rotationally matched.

10. An electric curtain, characterized in that: The electric curtain comprises a single-control transmission adjustment device (10) as claimed in any one of claims 1 to 9, and further comprises a transmission box device, a guide rail assembly (60) and a drive mechanism (20), wherein the single-control transmission adjustment device (10) is installed on the transmission box device, and the drive mechanism (20) is correspondingly driven and connected to the first transmission assembly (30) or the second transmission assembly (40) through the single-control transmission adjustment device (10).

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