Transmission structure

Abstract

The utility model relates to a transmission structure which comprises a transmission main shaft, two transmission wheels and two iron pieces are coaxially connected to the transmission main shaft, and the transmission wheels and the iron pieces are rotationally connected to the transmission main shaft. A clutch part is arranged between the iron piece and the transmission wheel; the clutch part comprises a rotating piece, two magnetic beads and two grooves, and the rotating piece, the two magnetic beads and the two grooves are arranged on the inner side wall of the transmission wheel. After the transmission structure is adopted, when the two clutch parts are both in a meshed state, the single transmission main shaft can be driven by the single motor, the two transmission wheels are driven by the single transmission main shaft to rotate simultaneously, then the corresponding belt wheels are driven to rotate simultaneously, and curtains on the two sides can be opened and closed together; when one of the two clutch parts is in a meshed state, the single motor drives the single transmission main shaft to drive one belt pulley to rotate, and independent opening and closing of the curtain on one side can be achieved. The single motor and the single transmission main shaft are low in cost and suitable for large-scale production and application.

Description

Technical Field

[0001] The utility model relates to the technical field of electric curtain accessories, and specifically relates to a transmission structure. Background Art

[0002] In the prior art, a single curtain can be synchronously opened and closed in opposite directions through two tracks at the same horizontal height, and the two sides of the curtain can be opened and closed independently. This solves the technical problem that the opening position of a single curtain is only in the middle or fixed to one side.

[0003] In the prior art, two motors, curtain tracks, and two pulleys are used. The output shafts of the two motors are respectively connected to two driving main shafts; the two driving main shafts are respectively connected to two independent transmission structures, and the two transmission structures are respectively connected to the pulleys. Thus, the two motors respectively control the two pulleys to drive the belt and the pulley car to move on the track, and the pulley car drives the curtain to move, thereby controlling the opening and closing of the curtain. However, the above solution uses two main shafts and two motors, resulting in a relatively high cost. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is the relatively high cost of using two main shafts and two motors in the prior art.

[0005] The utility model solves the above technical problem through the following technical solution: a transmission structure, including: a driving main shaft, on which two transmission wheels and two iron parts corresponding to the transmission wheels are coaxially connected, and both the transmission wheel and the iron part are rotatably connected to the driving main shaft; a clutch part is arranged between the iron part and the corresponding transmission wheel; the clutch part includes: a rotating part, which is drivingly connected to the driving main shaft, two magnetic beads, which are respectively adsorbed on the iron part, the two magnetic beads are located on opposite sides of the rotating part, and two grooves are arranged on the inner side wall of the transmission wheel.

[0006] Specifically, the two iron parts are located between the two transmission wheels, or the two transmission wheels are located between the two iron parts.

[0007] Specifically, the iron part is fixedly connected with a limiting gear; or, a limiting tooth is arranged on the outer circle of the iron part.

[0008] Specifically, it further includes a mounting plate, on which an opening for the driving main shaft to pass through is provided, and the two limiting gears are located on both sides of the mounting plate.

[0009] Specifically, a magnetic block is arranged on one side of the rotating part facing the iron part.

[0010] Specifically, a cavity is arranged inside the rotating part, and the cavity is used to accommodate the magnetic block.

[0011] Specifically, the number of the magnetic blocks is two, and the two magnetic blocks are centrosymmetric about the central axis of the transmission main shaft.

[0012] Specifically, it further includes two transmission gears. The transmission gears are meshed with the corresponding transmission wheels, and the transmission gears are also coaxially connected with belt pulleys. The two belt pulleys are at the same horizontal height.

[0013] Specifically, a spline connection is adopted between the transmission main shaft and the rotating part.

[0014] Specifically, one end of the transmission main shaft is provided with a spline end or a spline groove.

[0015] Specifically, a second bearing is connected between the limiting gear and the mounting plate.

[0016] On the basis of conforming to the common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0017] The positive and progressive effects of the present invention are as follows: After adopting the above transmission structure, when both clutch parts are in the meshed state, a single motor can drive a single transmission main shaft, and the single transmission main shaft can drive two transmission wheels to rotate simultaneously, and then drive two belt pulleys to rotate simultaneously, so as to realize the opening and closing of the curtains on both sides together; when one of the two clutch parts is in the meshed state, the single motor driving the single transmission main shaft can drive one of the belt pulleys to rotate, so as to realize the independent opening and closing of one side of the curtain. The single motor and the single transmission main shaft have low costs and are suitable for large-scale production applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an exploded view of a transmission structure of the present invention.

[0019] Figure 2 It is a structural diagram of the transmission main shaft in the present invention.

[0020] Figure 3 It is a structural diagram of a transmission structure of the present invention.

[0021] Figure 4 It is a structural diagram of an embodiment of a transmission structure of the present invention after omitting the mounting plate.

[0022] Figure 5 It is a structural diagram of another embodiment of a transmission structure in the present invention after omitting the mounting plate.

[0023] Figure 6 It is a structural diagram of the clutch part in the present invention.

[0024] Figure 7 It is a structural diagram of a limiting gear in the present invention from one perspective.

[0025] Figure 8 This is a structural diagram of the limiting gear in another perspective in the present utility model.

[0026] Explanation of reference numerals in the drawings: 1, main transmission box; 2, spline end; 3, transmission main shaft; 4, limiting gear; 5, transmission wheel; 6, belt pulley; 7, clutch part; 8, mounting plate; 9, transmission gear; 10, rotating part; 11, iron part; 12, magnetic bead; 13, groove; 14, first bearing; 15, second bearing; 16, magnetic block; 17, limiting tooth. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present utility model.

[0028] It should be noted that in the claims and the description of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one" does not exclude the existence of another identical element in the process, method, article or device including the element.

[0029] The present utility model discloses a transmission structure, as Figures 1-7 shown, including: a transmission main shaft 3, two transmission wheels 5 coaxially connected to the transmission main shaft 3, and two iron parts 11 corresponding to the transmission wheels 5. Both the transmission wheels 5 and the iron parts 11 are rotatably connected to the transmission main shaft 3; a clutch part 7 is provided between the iron part 11 and the corresponding transmission wheel 5; the clutch part 7 includes: a rotating part 10, the rotating part 10 is drivingly connected to the transmission main shaft 3, two magnetic beads 12, adsorbed on the iron part 11, the two magnetic beads 12 are located on opposite sides of the rotating part 10, and two grooves 13 are provided on the inner side wall of the transmission wheel 5.

[0030] The structures of the two driving wheels 5 are completely identical, and the structures of the two iron parts 11 are completely identical. The iron part 11 is preferably made of an iron part or an iron alloy part, which is relatively easy to manufacture. Of course, cobalt, nickel and their alloy parts can also be used, and the iron part 11 that can be adsorbed by the magnetic beads 12.

[0031] This transmission structure is arranged in the main transmission box 1, as Figure 1 shown. The principle is described in detail below:

[0032] The rotating part 10 is preferably an oval part, and the two magnetic beads 12 are preferably arranged symmetrically about the center of the rotating part 10. The two magnetic beads 12 are directly adsorbed on the iron part 11. In the initial state, the rotating part 10 is located between the two magnetic beads 12, and the magnetic beads 12 are adsorbed on the iron part 11 and do not move. At this time, when the transmission main shaft 3 rotates, the rotating part 10 rotates with the transmission main shaft 3, so that the rotating part 10 abuts against the magnetic beads 12. Due to the adsorption force between the magnetic beads 12 and the iron part 11, the magnet 12 and the iron part 11 are driven to rotate at the same time. The adsorption force between the two magnetic beads 12 and the limiting gear 4 is greater than the gravity of the iron part 11, so that the rotating part 10 and the iron part 11 rotate synchronously, and at this time the two magnetic beads 12 do not cooperate with the two grooves 13, so the clutch part 7 is in the disengaged state.

[0033] When the iron part 11 does not rotate, the rotation of the iron part 11 can be restricted by an external driving force. At this time, since the transmission main shaft 3 is rotating and the iron part 11 is restricted by the external driving force and cannot rotate, the rotating part 10 rotates relative to the iron part 11. When the rotating part 10 rotates, it pushes the magnetic beads 12 on both sides, so that the two magnetic beads 12 are respectively stuck into the two grooves 13, forming a state where the rotating part 10 abuts against the driving wheel 5 through the magnetic beads 12, and the clutch part is in the engaged state. In this way, when the transmission main shaft 3 continues to rotate, it will drive the driving wheel 5 to rotate at the same time. There is a certain distance between the iron part 11 and the groove 13, but this distance is less than the diameter of the magnetic bead 12, ensuring that after a part of the magnetic bead 12 enters the groove 13, the rest of the magnetic bead 12 still contacts the iron part 11, and the magnetic bead 12 always contacts the iron part 11.

[0034] Therefore, when the external driving force restricts the rotation of a single iron part 11, a single clutch part 7 is in the engaged state, realizing the rotation of a single driving wheel 5, and finally achieving the purpose of unilateral opening and closing; when the external driving force restricts the rotation of the two iron parts 11, the two clutch parts 7 are in the engaged state, realizing the transmission of the two driving wheels 5, and finally achieving the purpose of opening and closing the curtains on both sides. The structure is compact and occupies little internal space. With the above structure, the cost of a single motor and a single transmission main shaft 3 is relatively low, which is suitable for large-scale production applications.

[0035] Specifically, the two iron parts 11 are located between the two driving wheels 5 or the two driving wheels 5 are located between the two iron parts 11.

[0036] This application has two drive wheels 5, two clutch parts 7, and two iron parts 11. There are various installation methods. In one embodiment, preferably, as Figure 3 , 4 shown, from top to bottom in the figure are the drive wheel 5, the clutch part 7, the iron part 11, the iron part 11, the clutch part 7, and the drive wheel 5. This installation method makes it convenient for installers to install, and the structure is balanced and stable during operation. Moreover, the distance between the two drive wheels 5 is relatively far, which is applicable to the structure when two relatively far tracks need to be installed. Another embodiment can also be adopted, such as Figure 5 shown, from top to bottom are the iron part 11, the clutch part 7, the drive wheel 5, the drive wheel 5, the clutch part 7, and the iron part 11. This installation method makes it convenient for installers to install, and the structure is balanced and stable during operation. Moreover, the distance between the two drive wheels 5 is relatively close, which is applicable to the structure when two relatively close tracks need to be installed.

[0037] Specifically, the iron part 11 is fixedly connected with a limiting gear 4; or, the outer ring of the iron part 11 is provided with limiting teeth.

[0038] Since the externally connected driving force is required to restrict the rotation of the iron part 11, the driving main shaft 3 can rotate relative to the iron part 11, so that the clutch part 7 changes from the disengaged state to the engaged state. Setting the iron part 11 alone is not easily restricted by the externally connected driving force. Preferably, a limiting gear 4 is set and fixedly connected to one side of the iron part 11, and the rotation of the limiting gear 4 is locked to prevent the iron part 11 from rotating. At this time, the iron part 11 is an iron ring, and the limiting gear 4 is fixedly connected with the iron part 11. In another way, a plurality of limiting teeth are directly machined on the outer ring of the iron part 11, which can reduce the steps of connecting and assembling the limiting gear 4 with the iron part 11.

[0039] The output end of the externally connected driving force preferably uses a motor. The output shaft of the motor is provided with fixed teeth adapted to the limiting teeth 17. The fixed teeth are continuous and are arranged along a part of the circumferential direction of the output shaft. That is, when the motor drives the output shaft to rotate, when the fixed teeth cooperate with the limiting teeth 17 on the limiting gear 4 or the limiting teeth 17 on the outer ring of the iron part 11, the iron part 11 is restricted from rotating; when the fixed teeth are misaligned with the limiting teeth 17, the iron part 11 can rotate freely.

[0040] As Figure 6 , 7 shown, the middle part of the front surface of the limiting gear 4 protrudes towards the drive wheel 5. The iron part 11 is fixedly connected to the position on the middle part of the front surface of the limiting gear 4 towards the drive wheel 5. Moreover, a groove is provided in the middle part of the back surface of the limiting gear 4 for the bearing to be embedded, and a through hole for the driving main shaft 3 to extend into is provided in the middle part.

[0041] Specifically, it further includes a mounting plate 8. The mounting plate 8 is provided with an opening through which the driving main shaft 3 passes, and the two limiting gears are located on both sides of the mounting plate 8.

[0042] Preferably, the mounting plate 8 is located at the middle position inside the main transmission case 1. The two limiting gears 4 can be respectively mounted on both sides of the mounting plate 8. Preferably, the two limiting gears 4 are mounted on the front and back sides of the mounting plate 8, so that the limiting gears 4 are rotatably connected to the mounting plate 8. The front and back sides of a single mounting plate 8 provide mounting positions for the two limiting gears 4. Then, the clutch part 7 is installed, and finally the transmission wheel 5 is sleeved outside the clutch part 7, which can reduce the number of mounting plates 8.

[0043] Specifically, a magnetic block 16 is provided on the side of the rotating part 10 away from the transmission wheel 5.

[0044] In order to ensure that the suction force between the rotating part 10 and the iron part 11 can drive the iron part 11 to rotate simultaneously when the rotating part 10 rotates in the initial state, a magnetic block 16 is arranged inside the rotating part 10. The magnetic block 16 is attracted to the iron part 11 to increase the suction force between the iron part 11 and the rotating part 10.

[0045] Specifically, a cavity is provided inside the rotating part 10 for accommodating the magnetic block 16. The number of magnetic blocks 16 is two, and the two magnetic blocks 16 are centrosymmetric about the central axis of the driving main shaft 3.

[0046] The installation method of the magnetic block 16 can be: a cavity is provided inside the rotating part 10 for accommodating the magnetic block 16, ensuring that the magnetic block 16 does not protrude from the surface of the rotating part 10.

[0047] Preferably, two magnetic blocks 16 are provided, and the two magnetic blocks 16 are centrosymmetric about the central axis of the driving main shaft 3 to ensure the balance of the suction force of the magnetic blocks 16 when the rotating part 10 rotates.

[0048] Specifically, it further includes two transmission gears 9. The transmission gears 9 are meshed with the transmission wheel 5, and the transmission gears 9 are also coaxially connected with belt wheels 6. The two belt wheels 6 are at the same horizontal height.

[0049] As Figure 3 、 4 shown, the transmission gear 9 meshed with the upper transmission wheel 5 is located on the right side, and the corresponding belt wheel 6 is located on the right side. The transmission gear 9 meshed with the lower transmission wheel 5 is located on the left side, and the corresponding belt wheel 6 is located on the left side, making the structure symmetric, reasonable and ensuring the compactness of the internal structure of the main transmission case 1.

[0050] Specifically, a spline connection is adopted between the driving main shaft 3 and the rotating part 10.

[0051] The spline fitting method ensures that the transmission main shaft 3 and the rotating member 10 always rotate synchronously, and there is no relative movement along the circumferential direction of the transmission main shaft 3. Meanwhile, it can be assembled along the axial direction of the transmission main shaft 3.

[0052] Specifically, one end of the transmission main shaft 3 is provided with a spline end 2 or a spline groove.

[0053] Such as Figure 2 As shown, specifically, one end of the transmission main shaft 3 is provided with a spline end 2 or a spline groove. Through the design of the spline end 2 or the spline groove, it is convenient for the output shaft of the external motor to cooperate with the spline end 2 or the spline groove on the transmission main shaft 3. When one end of the transmission main shaft 3 is the spline end 2, one end of the corresponding output shaft of the external motor is a spline groove, which can cooperate with the spline end 2; and when one end of the transmission main shaft 3 is a spline groove, one end of the corresponding output shaft of the external motor is a spline end 2, which can cooperate with the spline groove. It is convenient for the output shaft of the external motor to be closely fitted with the transmission main shaft 3.

[0054] Specifically, a second bearing 15 is connected between the limiting gear 4 and the mounting plate 8.

[0055] By providing the above-mentioned second bearing 15, preferably, the limiting gear 4 rotates relatively stably on the mounting plate 8. The pulley 6 is coaxially connected with a first bearing 14. By providing the above-mentioned first bearing 14, the rotational accuracy of the pulley 6 can be ensured.

[0056] After considering the specification and practice disclosed herein, those skilled in the art will readily think of other embodiments of the present invention. This application aims to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field not disclosed in the present invention. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0057] It should be understood that the present invention is not limited to the precise 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 invention is only limited by the appended claims.

Claims

1. A transmission structure, characterized in that: Comprising: A driving main shaft (3), on which two driving wheels (5) and two iron parts (11) corresponding to the driving wheels (5) are coaxially connected. The driving wheels (5) and the iron parts (11) are both rotatably connected to the driving main shaft (3); A clutch part (7) is arranged between the iron part (11) and the corresponding driving wheel (5); The clutch part (7) comprises: A rotating part (10), which is drivingly connected to the driving main shaft (3), Two magnetic beads (12), which are adsorbed on the iron part (11), and the two magnetic beads (12) are respectively located on opposite sides of the rotating part (10), Two grooves (13), which are arranged on the inner side wall of the driving wheel (5).

2. The transmission structure according to claim 1, characterized in that: The two iron parts (11) are located between the two driving wheels (5), or the two driving wheels (5) are located between the two iron parts (11).

3. A transmission structure according to claim 1, characterized in that: The iron part (11) is fixedly connected with a limiting gear (4); or, the outer circle of the iron part (11) is provided with limiting teeth.

4. A transmission structure according to claim 3, characterized in that: It further comprises a mounting plate (8), on which an opening for the driving main shaft (3) to pass through is provided, and the two limiting gears (4) are located on both sides of the mounting plate (8).

5. A transmission structure according to claim 1, characterized in that: A magnetic block (16) is arranged on the side of the rotating part (10) facing the iron part (11).

6. A transmission structure according to claim 5, characterized in that: A cavity is arranged inside the rotating part (10) for accommodating the magnetic block (16).

7. A transmission structure according to claim 5, wherein: The number of the magnetic blocks (16) is two, and the two magnetic blocks (16) are centrosymmetric about the central axis of the driving main shaft (3).

8. A transmission structure according to claim 1, characterized in that: It further comprises two driving gears (9), the driving gears (9) are meshed with the corresponding driving wheels (5), and the driving gears (9) are also coaxially connected with belt wheels (6), and the two belt wheels (6) are at the same horizontal height.

9. A transmission structure according to claim 1, characterized in that: The driving main shaft (3) and the rotating part (10) are connected by splines.

10. A transmission structure according to claim 4, characterized in that: A second bearing (15) is connected between the limiting gear (4) and the mounting plate (8).

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