CN112682940A - Rolling mechanism and air conditioner - Google Patents

Abstract

The invention provides a roller shutter mechanism and an air conditioner, wherein the roller shutter mechanism comprises a first rotating part, a second rotating part, a roller shutter, a pull rope and an auxiliary rope, and the roller shutter, the pull rope and the auxiliary rope are mutually related when moving or being pulled by the limitation of the winding mode and the connection mode of the roller shutter, the pull rope and the auxiliary rope. When the roller shutter is unfolded, the auxiliary rope moves to generate pulling force on the pull rope and the roller shutter, so that the auxiliary roller shutter is unfolded, and the roller shutter is smoothly unfolded. When the roller shutter is in the unfolded state, if an external force (for example, an accidental touch of a child) pulls the roller shutter in a direction away from the second rotating portion, a tensile force is applied to the roller shutter due to the presence of the auxiliary cord to prevent the external force from pulling the roller shutter, so that the auxiliary cord also has a locking effect on the roller shutter to keep the roller shutter in the unfolded state.

Description

Rolling mechanism and air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to a roller shutter mechanism and an air conditioner.

Background

Most air inlets and air outlets of air conditioners in the market are not completely sealed, the air inlets and the air outlets of the whole air conditioners are communicated and contacted with the outside in a non-running state, dust and foreign matters in the air easily enter the air conditioners, so that internal dirt is caused, the heat exchange efficiency and the health of consumers of the air conditioners are influenced, and the gaps of the air outlets also influence the integrity of the appearance.

In order to avoid the influence on the appearance of the air conditioner when opening or closing the air opening, a rolling mechanism in which a rolling shutter opens or closes the air opening by being rolled and unrolled is used in the related art. However, since the air inlet of the air conditioner is generally horizontally arranged, the roller shutter is relatively flexible, and the roller shutter is not smooth enough and difficult to ensure the flatness during operation.

Disclosure of Invention

The invention provides a roller shutter mechanism and an air conditioner, which aim to realize smooth movement of a roller shutter.

In order to achieve the above object, according to one aspect of the present invention, there is provided a roll screen mechanism including: a first rotating part rotatably provided; a second rotating portion spaced apart from the first rotating portion; the first end of the roller shutter is connected with the first rotating part, and at least one part of the roller shutter is wound on the first rotating part along a first winding direction by taking the first end as a starting point; a pull rope, a first end of which is located on the second rotating portion, at least a part of which is wound around the second rotating portion in a second winding direction with the first end as a starting point, and a second end of which is connected to a second end of the roller shutter, wherein the second winding direction is opposite to the first winding direction; an auxiliary rope, a first end of which is connected to the first rotating portion, a part of which is wound around the first rotating portion in the second winding direction with the first end as a starting point, a second end of which is located on the second rotating portion, and a part of which is wound around the second rotating portion in the first winding direction with the second end as a starting point; wherein the first end of the pull rope and the second end of the auxiliary rope are respectively connected with the second rotating part; or the first end of the pull rope is connected with the second end of the auxiliary rope.

Further, the roller shutter mechanism further includes: a coil spring structure cooperating with the second rotating portion to apply a constant torque to the second rotating portion.

Further, the second rotating portion includes: the coil spring structure is matched with the second rotating shaft; the first wire guide wheel is sleeved on the second rotating shaft, and the pull rope is matched with the first wire guide wheel; and the second wire guide wheel is sleeved on the second rotating shaft, and the auxiliary rope is matched with the second wire guide wheel.

Further, the first wire guide wheel has an annular groove to receive the pulling rope, the second wire guide wheel has an annular groove to receive the auxiliary rope, and the roll blind mechanism further includes: the coil spring structure is located in the mounting box, and the second rotating shaft penetrates through the mounting box.

Furthermore, the mounting box comprises an upper box body, a lower box body and a guide sleeve, the upper box body is detachably connected with the lower box body, the coil spring structure and the guide sleeve are both located in a cavity between the upper box body and the lower box body, and the second rotating shaft penetrates through the guide sleeve.

Further, the second rotating shaft is provided with a first limiting surface and a second limiting surface, the coil spring structure is matched with the first limiting surface, the first wire wheel is matched with the second limiting surface to realize circumferential limiting, and the second wire wheel is matched with the second limiting surface to realize circumferential limiting.

Further, the first rotating portion includes: the first rotating shaft is rotatably arranged; the winding drum is sleeved on the first rotating shaft, and the roller shutter is connected with the winding drum; and the third wire guide wheel is sleeved on the first rotating shaft, and the auxiliary rope is matched with the third wire guide wheel.

Furthermore, the first rotating shaft is provided with a third limiting surface and a fourth limiting surface, the winding drum is in limiting fit with the third limiting surface, and the third wire guide wheel is in fit with the fourth limiting surface.

Further, the third wire guide wheel has an annular groove for accommodating the auxiliary rope, and the roller shutter mechanism further comprises a driving part which is in driving connection with the first rotating shaft.

Further, the roller shutter mechanism further includes: the frame is provided with an air opening, and the roller shutter is used for covering or avoiding the air opening; a first fixing box disposed at one end of the frame, the first rotating part being disposed in the first fixing box; and the second fixed box is arranged at the other end of the frame, and the second rotating part is arranged in the second fixed box.

According to another aspect of the present invention, there is provided an air conditioner including the above-described rolling shutter mechanism.

The technical scheme of the invention provides a roller shutter mechanism which comprises a first rotating part, a second rotating part, a roller shutter, a pull rope and an auxiliary rope, and the roller shutter, the pull rope and the auxiliary rope are related to each other when moving or under tension through the limitation of the winding mode and the connection mode of the roller shutter, the pull rope and the auxiliary rope. When the roller shutter is unfolded, the auxiliary rope moves to generate pulling force on the pull rope and the roller shutter, so that the auxiliary roller shutter is unfolded, and the roller shutter is smoothly unfolded. When the roller shutter is in the unfolded state, if an external force (for example, an accidental touch of a child) pulls the roller shutter in a direction away from the second rotating portion, a tensile force is applied to the roller shutter due to the presence of the auxiliary cord to prevent the external force from pulling the roller shutter, so that the auxiliary cord also has a locking effect on the roller shutter to keep the roller shutter in the unfolded state.

By adopting the scheme, the first rotating part synchronously rotates through the auxiliary rope or the transmission second rotating part of the roller shutter when rotating, and the roller shutter and the pull rope are wound or unfolded by changing the rotating direction, so that the air opening or the closed air opening of the air conditioner can be opened. Through the cooperation of stay cord and supplementary rope, can make roll up the curtain and receive pulling force and pulling force value relatively more stable always at the operation in-process, guaranteed like this that roll up the curtain and smoothly curled or expand to there is better roughness after expanding. Moreover, by adopting the scheme, the operation can be realized only by one driving part, and the driving parts do not need to be arranged on the two rotating parts respectively, so that the structure is simplified, and the cost is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 illustrates an exploded view of a roller shade mechanism provided by an embodiment of the present invention;

FIG. 2 is a schematic view of the roller shade mechanism of FIG. 1 in a shade-extended state;

FIG. 3 is a schematic view of the roller shade mechanism of FIG. 1 in a rolled-up state;

fig. 4 shows a sectional view of the second rotating portion and the like in fig. 1;

fig. 5 is a perspective view showing the structure of the second rotating portion and the like in fig. 1;

fig. 6 is a perspective view showing the structure of the first rotating portion and the like in fig. 1.

Wherein the figures include the following reference numerals:

10. a first rotating section; 11. a first rotating shaft; 12. a reel; 13. a third wire guide wheel; 20. a second rotating part; 21. a second rotating shaft; 22. a first wire guide wheel; 23. a second wire guide wheel; 31. rolling a curtain; 32. pulling a rope; 33. an auxiliary rope; 40. a coil spring structure; 50. mounting a box; 51. an upper box body; 52. a lower box body; 53. a guide sleeve; 60. a drive section; 71. a frame; 72. a first stationary box; 73. a second stationary box; 74. and a roller.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, an embodiment of the present invention provides a roll screen mechanism including: a first rotating part 10 rotatably provided; a second rotating portion 20 spaced apart from the first rotating portion 10; a rolling shutter 31, a first end of the rolling shutter 31 being connected to the first rotating part 10, at least a portion of the rolling shutter 31 being wound around the first rotating part 10 in a first winding direction with the first end thereof as a starting point; a pulling rope 32, a first end of the pulling rope 32 is located on the second rotating portion 20, at least a portion of the pulling rope 32 is wound around the second rotating portion 20 in a second winding direction with the first end as a starting point, and a second end of the pulling rope 32 is connected to a second end of the rolling curtain 31, wherein the second winding direction is opposite to the first winding direction; an auxiliary rope 33, a first end of the auxiliary rope 33 is connected to the first rotating part 10, a part of the auxiliary rope 33 is wound around the first rotating part 10 in the second winding direction with the first end as a starting point, a second end of the auxiliary rope 33 is located on the second rotating part 20, and a part of the auxiliary rope 33 is wound around the second rotating part 20 in the first winding direction with the second end as a starting point; wherein, the first end of the pulling rope 32 and the second end of the auxiliary rope 33 are respectively connected with the second rotating part 20; alternatively, the first end of the pulling rope 32 and the second end of the auxiliary rope 33 are connected.

The scheme is limited by the winding mode and the connection mode of the roller shutter 31, the pull rope 32 and the auxiliary rope 33, so that the roller shutter 31, the pull rope 32 and the auxiliary rope 33 can be mutually related when moving or being subjected to pulling force. Thus, when the roller shutter 31 is unfolded, the movement of the auxiliary cord 33 generates a pulling force on the pulling cord 32 and the roller shutter 31, thereby functioning to assist the roller shutter 31 in unfolding, so that the roller shutter 31 is smoothly unfolded. When the roller shutter 31 is in the unwound state, if an external force (for example, an accidental touch by a child) pulls the roller shutter 31 in a direction away from the second rotating portion 20, the auxiliary cord 33 is present, and thus, a tensile force is applied to the roller shutter 31 to prevent the external force from pulling the roller shutter 31, and therefore, the auxiliary cord 33 also has a locking effect on the roller shutter 31, and the roller shutter 31 is maintained in the unwound state.

The auxiliary rope 33 and the pull rope 32 in the scheme can adopt different ropes, namely the auxiliary rope 33 and the pull rope 32 are respectively wound on the second rotating part 20, and the auxiliary rope 33 and the pull rope 32 are not directly connected; alternatively, the end of the auxiliary rope 33 on the second rotating part 20 and the end of the pulling rope 32 on the second rotating part 20 are connected together, i.e., the auxiliary rope 33 and the pulling rope 32 form a single rope, which can also achieve the above-mentioned effects.

In this embodiment, the relationship between the roller blind 31, the pulling rope 32 and the auxiliary rope 33 can also be understood as forming a ring-shaped area around which the first rotating part 10 rotates with the second rotating part 20 driven by the auxiliary rope 33 or the roller blind 31. The first and second rotating portions 10 and 20 are located within the annular region. Since the roll screen 31, the pull cord 32 and the auxiliary cord 33 are formed around the annular region, they are associated with each other when they are moved or pulled.

Here, the annular region is understood to be a region around which the outer contours of the roller blind 31, the cord 32, and the auxiliary cord 33 are formed. For example, the roller shutter 31, the pull rope 32 and the auxiliary rope 33 are connected end to end in sequence; alternatively, the roll screen 31, the pulling rope 32 and the auxiliary rope 33 are not connected end to end, and the roll screen 31, the pulling rope 32 or the auxiliary rope 33 may be wound around the first rotating part 10 or the second rotating part 20 in a part, respectively, and such an arrangement may also be understood as an annular region. In this embodiment, the pulling rope 32 and the auxiliary rope 33 may be two ropes that are not connected, or may be one rope formed by connecting the two ropes end to end.

Wherein the pulling rope 32 may be wound around the second rotating part 20, and the auxiliary rope 33 may be wound around the first rotating part 10 or the second rotating part 20. When the first rotating part 10 rotates forwards, the roller shutter is unfolded, and the auxiliary rope 33 drives the second rotating part 20 to rotate; when the first rotating portion 10 rotates reversely, the rolling screen 31 rolls up, and the rolling screen 31 rotates the second rotating portion 20.

By adopting the scheme, when the first rotating part 10 rotates, the second rotating part 20 synchronously rotates through the transmission of the auxiliary rope 33 or the roller shutter 31, and the rolling shutter 31 and the pull rope 32 are wound or unfolded by changing the rotating direction, so that the air opening or the closed air opening of the air conditioner can be opened. Through the cooperation of the pulling rope 32 and the auxiliary rope 33, the roller shutter 31 is always under tension in the operation process, and the tension value is relatively stable, so that the roller shutter 31 is ensured to be smoothly curled or unfolded, and has better flatness after being unfolded. Moreover, by adopting the scheme, the operation can be realized only by one driving part, and the driving parts do not need to be arranged on the two rotating parts respectively, so that the structure is simplified, and the cost is reduced. Other structural interference affecting the operation of the roller shutter 31 can be reduced by the auxiliary cord 33.

As shown in fig. 1, the first rotating part 10 rotates clockwise to unwind the roll screen 31, and the roll screen 31 is stretched by a tensile force of the pulling rope 32, wherein the pulling rope 32 may be applied by a driving mechanism or an elastic structure, or by an auxiliary rope 33. In the case of no auxiliary cord 33, if the tension of the cord 32 is insufficient due to structural jamming or if a force opposite to the tension of the cord 32 is applied to the roll screen 31 by mistake, the roll screen 31 may not be smoothly unfolded and may be piled or wrinkled. Due to the existence of the auxiliary rope 33, when the first rotating part 10 rotates, the auxiliary rope 33 moves along with the first rotating part, the auxiliary rope 33 can apply clockwise rotating acting force on the second rotating part 20, so that auxiliary pulling force is applied to the pulling rope 32, the situation that the pulling force of the pulling rope 32 is insufficient is avoided, the anti-interference capability is improved, and the roller shutter 31 can be smoothly and flatly unfolded.

Also, due to the presence of the auxiliary cord 33, the auxiliary cord 33 may keep a tensile force on the second rotating portion 20 and the pulling cord 32 at all times after the roll screen 31 is unrolled, or the auxiliary cord 33 may generate a tensile force when a force is applied to the roll screen 31 in a direction toward the first rotating portion 10. The auxiliary rope 33 prevents the roll screen 31 from moving toward the first rotating part 10 by the tensile force of the auxiliary rope 33, and keeps the roll screen 31 in the unfolded state, so that the auxiliary rope 33 also has a function of locking the roll screen 31 when the roll screen 31 is applied with an external force.

In this embodiment, the roller shutter mechanism further includes: the coil spring structure 40, the coil spring structure 40 and the second rotating part 20 cooperate to apply a torque to the second rotating part 20. The torque direction is a direction in which the cord 32 is wound around the second rotating portion 20. The direction of the torque applied to the second rotating part 20 by the coil spring structure 40 is the same as the direction of the torque applied to the second rotating part 20 by the auxiliary cord 33. Further, the coil spring structure 40 is a constant force coil spring structure, so that the pulling force applied by the constant force coil spring structure to the pulling rope 32 is constant, that is, the pulling force applied by the pulling rope 32 to the roller shutter 31 is constant, and the pulling force does not change due to the moving position of the roller shutter 31, so that the roller shutter 31 keeps flatness and moves smoothly.

In the present embodiment, the second rotating portion 20 includes: the second rotating shaft 21, the coil spring structure 40 and the second rotating shaft 21 are matched; a first wire guide wheel 22 sleeved on the second rotating shaft 21, and a pull rope 32 matched with the first wire guide wheel 22; and a second wire guide wheel 23 sleeved on the second rotating shaft 21, wherein the auxiliary rope 33 is matched with the second wire guide wheel 23. In this way, the first wire guide wheel 22 winds and drives the pulling rope 32, and the second wire guide wheel 23 winds and drives the auxiliary rope 33, so that the pulling rope 32 and the auxiliary rope 33 are prevented from being scattered.

In the present embodiment, the first wire guide wheel 22 has an annular groove for receiving the pulling rope 32, the second wire guide wheel 23 has an annular groove for receiving the auxiliary rope 33, and the roll blind mechanism further includes: a mounting box 50, the coil spring structure 40 is positioned in the mounting box 50, and the second rotating shaft 21 passes through the mounting box 50. The provision of annular grooves facilitates the accommodation of the pull cord 32 and the auxiliary cord 33. Wherein, stay cord 32 and first wire wheel are two, and two stay cords 32 and two first wire wheels 22 one-to-one cooperation, mounting box 50 is located between two first wire wheels 22.

Specifically, a first end of the pulling rope 32 is fixedly connected to the first wire guide wheel 22, and at least a portion of the pulling rope 32 is wound around the annular groove of the first wire guide wheel 22 in the second winding direction with the first end thereof as a starting point. The second end of the auxiliary rope 33 is fixedly connected to the second wire guide wheel 23, and a portion of the auxiliary rope 33 is wound around the annular groove of the second wire guide wheel 23 in the first winding direction with the second end thereof as a starting point.

In this embodiment, the mounting box 50 includes an upper box 51, a lower box 52 and a guide 53, the upper box 51 and the lower box 52 are detachably connected, the coil spring structure 40 and the guide 53 are both located in a cavity between the upper box 51 and the lower box 52, and the second rotating shaft 21 passes through the guide 53. Providing the mounting box 50 as a detachable structure facilitates the arrangement and installation of the various components. The guide sleeve 53 can support the second rotating shaft 21 and reduce the rotation resistance. The guide sleeve 53 can also be understood as a bearing.

Wherein, the second shaft 21 has a first limiting surface and a second limiting surface, the coil spring structure 40 is matched with the first limiting surface, the first wire wheel 22 is matched with the second limiting surface to realize circumferential limitation, and the second wire wheel 23 is matched with the second limiting surface to realize circumferential limitation. This achieves circumferential spacing of the coil spring structure 40, the first wire guide pulley 22, the second wire guide pulley 23 and the second rotary shaft 21, respectively.

Optionally, the roller shutter mechanism further comprises a guide device, which cooperates with the auxiliary cord 33 and the pull cord 32 to guide the auxiliary cord 33 and the pull cord 32. This can guide the movement path of the auxiliary rope 33 or the pull rope 32, and avoid scattering or interference.

Alternatively, the guide means comprises a plurality of rotatable rollers 74, the auxiliary cord 33 and the pull cord 32 each cooperating with at least one roller 74. The roller 74 is used to limit and guide the auxiliary rope 33 and the pull rope 32. Specifically, the auxiliary rope 33 or the pull rope 32 is wound around at least two rollers 74 respectively to play a role of limiting and guiding, and the wire is prevented from being off.

In the present embodiment, the first rotating portion 10 includes: a first rotating shaft 11 rotatably provided; a winding drum 12 sleeved on the first rotating shaft 11, wherein the roller shutter 31 is connected with the winding drum 12; and a third wire guide wheel 13 sleeved on the first rotating shaft 11, wherein the auxiliary rope 33 is matched with the third wire guide wheel 13. The first rotating shaft 11 drives the winding drum 12 to rotate, and the winding and unwinding of the roll screen 31 are realized through the winding drum 12. The auxiliary rope 33 is wound or unwound by the rotation of the third wire guide wheel 13.

Specifically, a first end of the roll screen 31 is fixedly connected to the first rotating shaft 11, and at least a portion of the roll screen 31 is wound around the first rotating shaft 11 in the first winding direction with the first end thereof as a starting point. A first end of the auxiliary rope 33 is fixedly connected to the third wire guide wheel 13, and a portion of the auxiliary rope 33 is wound around the annular groove of the third wire guide wheel 13 in the second winding direction with the first end thereof as a starting point.

In this embodiment, the first rotating shaft 11 has a third limiting surface and a fourth limiting surface, the winding drum 12 is in limiting fit with the third limiting surface, and the third guide roller 13 is in limiting fit with the fourth limiting surface. In this way the reel 12, the third wire guide wheel 13 and the first shaft 11, respectively, are circumferentially limited.

In this embodiment, the third wire guide wheel 13 has an annular groove for receiving the auxiliary cord 33, and the rolling shutter mechanism further includes a driving part 60, and the driving part 60 is drivingly connected to the first rotating shaft 11. The auxiliary rope 33 can be limited by the annular groove. The driving portion 60 is used for driving the first rotating shaft 11 to rotate. Specifically, the driving part includes a motor and a gear box.

Further, the roller shutter mechanism further includes: a frame 71, the frame 71 having an air opening, the roller shutter 31 for covering or avoiding the air opening; a first fixed case 72 provided at one end of the frame 71, the first rotating portion 10 being provided in the first fixed case 72; and a second fixed case 73 provided at the other end of the frame 71, and the second rotating part 20 is provided in the second fixed case 73. Through the arrangement, the arrangement and the connection of all the components are convenient to realize. The roller shutter 31 avoids the air opening when being rolled up, the air opening is opened, the roller shutter 31 covers the air opening when being unfolded, and the air opening is closed. Specifically, the roll screen 31 has a winding position wound on the first rotating portion 10 and a unwinding position unwound between the first rotating portion 10 and the second rotating portion 20. The wind gap is covered or avoided by the position switching of the roller shutter 31.

In the present application, one end of the cord 32 is connected to the second rotating portion 20, and the other end of the cord 32 is connected to the other end of the roll screen 31. Herein connected is meant to be connected whenever two parts are in a mating relationship. Alternatively, in another embodiment, not shown, the pulling rope 32 and the auxiliary rope 33 are connected, the pulling rope 32 and the auxiliary rope 33 form a general rope, and the general rope is not fixedly connected with the second rotating part 20, but is sleeved on the second rotating part 20 or wound on the second rotating part 20.

Another embodiment of the present invention provides an air conditioner, which includes the above rolling shutter mechanism. By adopting the scheme, when the first rotating part 10 rotates, the second rotating part 20 synchronously rotates through the transmission of the auxiliary rope 33 or the roller shutter 31, and the rolling or unfolding of the roller shutter 31 and the pull rope 32 is realized by changing the rotating direction, so that the air opening or the closed air opening of the air conditioner can be opened. Through the cooperation of the pulling rope 32 and the auxiliary rope 33, the roller shutter 31 is always under tension in the operation process, and the tension value is relatively stable, so that the roller shutter 31 is ensured to be smoothly curled or unfolded, and has better flatness after being unfolded.

In the scheme, the roller shutter 31 is completely unfolded in the non-operation state of the air conditioner, the flatness is good, the flatness is leveled through the coil spring structure 40 on the right side, the winding drum 12 is fixed and cannot rotate under the self-locking condition of the stepping motor, the coil spring structure 40 on the right side applies clockwise rotation force to the second rotating shaft 21, the second rotating shaft 21 drives the first wire guide wheel 22 to rotate clockwise, so that the end, with the rope, of the roller shutter 31 keeps constant force transmitted by the coil spring structure 40, and the roller shutter 31 of the air conditioner can also have good flatness in the non-operation state; in addition, in the running state, the right side of the roller shutter 31 has proper tension, so that the roller shutter 31 can run smoothly, and the roller shutter 31 is wound on the winding drum smoothly, so that the next running is facilitated.

When the air conditioner is operated, the air inlet and the air outlet need to be opened for the roller shutter 31, the stepping motor rotates in the forward direction, the roller shutter 31 is driven to rotate anticlockwise by the gear assembly to drive the roller 12, the roller shutter 31 is pulled from one side to the other side, and when the air inlet and the air outlet are completely opened, the stepping motor stops moving.

When the air conditioner is finished, the stepping motor rotates reversely to drive the first rotating shaft 11 to rotate through the transmission of the gear assembly, meanwhile, the winding drum 12 is driven to rotate, the roller shutter 31 is soft and has no thrust, at this time, the roller shutter 31 is pulled to move through the coil spring structure 40 on the other side and is wound on the first wire guide wheel 22, so that the air inlet and the air outlet are completely closed, the appearance is opened and closed, and the air conditioner operates repeatedly as described above.

The auxiliary rope 33 is opposite to the winding direction of the roller blind 31 on the winding drum 12, and the auxiliary rope 33 moves in the opposite direction during the rotation of the stepping motor drives the roller blind 31 on the winding drum 12 to move. The roller shutter 31 and the auxiliary rope 33 form a closed loop between the rotation centers of the first and second shafts 11 and 21. The rolling shutter 31 does not deviate from the movement locus even if it is affected by an external force. If the auxiliary rope 33 is not involved in forming a closed loop, only the roller blind 31 is connected to the two rotation centers of the first rotating shaft and the second rotating shaft 21, and if the roller blind 31 is subjected to an external pulling force exceeding the pulling force of the coil spring structure 40, the roller blind 31 will be pulled out of the movement track.

The stepping motor rotates clockwise to drive the first rotating shaft 11 to rotate clockwise through the transmission of the gear assembly, meanwhile, the winding drum 12 is driven to rotate, the roller shutter 31 is soft and has no thrust, at the moment, the roller shutter 31 is pulled to move through the coil spring structure 40 on the other side, if the pulling force of the external force on the roller shutter 31 is greater than the pulling force of the constant-force coil spring, the roller shutter 31 cannot move according to the pulling force of the coil spring structure 40. And first pivot 11 drives third wire wheel 13 clockwise simultaneously and rotates, third wire wheel 13 clockwise rotates winding auxiliary rope 33 and makes it produce the pulling force, transmit the pulling force to second wire wheel 23 through auxiliary rope 33, make second wire wheel 23 clockwise rotate, rethread second pivot 21 drives first wire wheel 22 clockwise, the power that the one end that at this moment rolls up 31 area rope receives is the power of coil spring structure 40 plus auxiliary rope 33's pulling force, the anti-jamming ability of roll up 31 has greatly been improved.

By adopting the scheme, the air inlet or the air outlet can be completely sealed when the air conditioner is in a non-running state, so that foreign matters are prevented from entering the air conditioner to influence the running state and the service life of the air conditioner; the appearance of the air conditioner and the structure of the air conditioner are not obviously changed in the operation process, and the appearance of the air conditioner is not provided with a structure similar to an air deflector and the appearance surface does not influence the overall appearance; the interference influence of external objects is reduced, and the stability of the opening and closing mechanism positioned at the air inlet is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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.

Claims (11)

1. A roller shutter mechanism, comprising:

a first rotating section (10) rotatably provided;

a second rotating portion (20) spaced apart from the first rotating portion (10);

a roll screen (31), a first end of the roll screen (31) is connected with the first rotating part (10), and at least one part of the roll screen (31) is wound on the first rotating part (10) along a first winding direction by taking the first end as a starting point;

a pulling rope (32), wherein a first end of the pulling rope (32) is positioned on the second rotating part (20), at least one part of the pulling rope (32) is wound on the second rotating part (20) along a second winding direction by taking the first end as a starting point, and a second end of the pulling rope (32) is connected with a second end of the roller shutter (31), wherein the second winding direction is opposite to the first winding direction;

an auxiliary rope (33), a first end of the auxiliary rope (33) being connected to the first rotating part (10), a portion of the auxiliary rope (33) being wound around the first rotating part (10) in the second winding direction with the first end thereof being a starting point, a second end of the auxiliary rope (33) being located on the second rotating part (20), a portion of the auxiliary rope (33) being wound around the second rotating part (20) in the first winding direction with the second end thereof being a starting point;

wherein a first end of the pull rope (32) and a second end of the auxiliary rope (33) are respectively connected with the second rotating part (20); or the first end of the pull rope (32) is connected with the second end of the auxiliary rope (33).

2. The roller shade mechanism of claim 1, further comprising:

a coil spring structure (40), said coil spring structure (40) cooperating with said second rotating part (20) to apply a constant torque to said second rotating part (20).

3. The shutter mechanism according to claim 2, characterized in that the second rotating portion (20) includes:

a second shaft (21), said coil spring structure (40) cooperating with said second shaft (21);

the first wire guide wheel (22) is sleeved on the second rotating shaft (21), and the pull rope (32) is matched with the first wire guide wheel (22);

and the second wire guide wheel (23) is sleeved on the second rotating shaft (21), and the auxiliary rope (33) is matched with the second wire guide wheel (23).

4. The roller shutter mechanism according to claim 3, wherein the first wire guide wheel (22) has an annular groove that receives the pull cord (32), and the second wire guide wheel (23) has an annular groove that receives the auxiliary cord (33), the roller shutter mechanism further comprising:

a mounting box (50), wherein the coil spring structure (40) is positioned in the mounting box (50), and the second rotating shaft (21) penetrates through the mounting box (50).

5. The blind mechanism according to claim 4, characterized in that the mounting box (50) comprises an upper box (51), a lower box (52) and a guide sleeve (53), the upper box (51) and the lower box (52) being detachably connected, the coil spring structure (40) and the guide sleeve (53) being both located in a cavity between the upper box (51) and the lower box (52), the second shaft (21) passing through the guide sleeve (53).

6. The blind mechanism of claim 3, wherein the second shaft (21) has a first stop surface and a second stop surface, the coil spring structure (40) cooperating with the first stop surface, the first wire guide wheel (22) cooperating with the second stop surface to effect circumferential stop, and the second wire guide wheel (23) cooperating with the second stop surface to effect circumferential stop.

7. The shutter mechanism according to claim 1, characterized in that the first rotation portion (10) comprises:

a first rotating shaft (11) rotatably provided;

the winding drum (12) is sleeved on the first rotating shaft (11), and the roller blind (31) is connected with the winding drum (12);

and the third wire guide wheel (13) is sleeved on the first rotating shaft (11), and the auxiliary rope (33) is matched with the third wire guide wheel (13).

8. The roller shutter mechanism according to claim 7, characterized in that the first shaft (11) has a third stop surface and a fourth stop surface, the drum (12) and the third stop surface engaging in a stop manner, and the third guide wheel (13) and the fourth stop surface engaging in a stop manner.

9. Roller shutter mechanism according to claim 7, characterized in that the third guide pulley (13) has an annular groove accommodating the auxiliary cord (33), the roller shutter mechanism further comprising a drive part (60), the drive part (60) being in driving connection with the first rotary shaft (11).

10. The roller shade mechanism of claim 1, further comprising:

a frame (71), wherein the frame (71) is provided with an air opening, and the roller shutter (31) is used for covering or avoiding the air opening;

a first fixed case (72) provided at one end of the frame (71), the first rotating portion (10) being provided inside the first fixed case (72);

and a second fixed box (73) provided at the other end of the frame (71), the second rotating portion (20) being provided in the second fixed box (73).

11. An air conditioner characterized in that it comprises a roller shutter mechanism according to any one of claims 1 to 10.

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