Hand-push windproof roller shutter one-way damper and hand-push windproof roller shutter

Abstract

The utility model relates to a one-way damper of a hand-push windproof roller shutter and the hand-push windproof roller shutter. The one-way damper for the hand-push windproof roller shutter comprises a damper body, a driving rotating shaft, a one-way driving assembly and a crown rotating wheel assembly. The one-way driving assembly and the crown rotating wheel assembly are arranged on a driving rotating shaft in a sleeving mode and are sequentially arranged in the axial direction of the driving rotating shaft. The damper body is connected with the one-way driving assembly; the crown rotating wheel assembly is connected with a rolling pipe of the roller shutter; the one-way driving assembly can only rotate in the clockwise direction or the anticlockwise direction and is used for restricting the rotating direction of the driving rotating shaft. According to the scheme, it can be ensured that the curtain cloth cannot slide down due to the dead weight, the curtain cloth can more accurately stay at the needed position, the balance requirement for the torque force of the torsional spring and the torque generated by the gravity of the curtain cloth is lowered, and therefore the curtain cloth adjusting device can adapt to curtain cloth of different materials and sizes, and is high in universality, simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling curtains, in particular to a hand-pushed windproof rolling curtain one-way damper and a hand-pushed windproof rolling curtain. Background Art

[0002] A damper is a device used to slow down or limit the movement of an object. At present, in hand-pushed windproof roller blinds, a torsion spring is generally used to raise and lower the curtain, and a friction plate is used to stop the curtain. The winding force of the torsion spring is equal to the weight of the curtain. When the user uses his hand to apply upward or downward force under the curtain to move the curtain up or down, the torque force of the torsion spring and the torque generated by the gravity of the curtain need to be precisely balanced, and the friction plate can make the curtain stay at any place the user wants.

[0003] The hand-pushed windproof roller shutter with friction plate structure braking needs to maintain a precise balance between the torque of the torsion spring and the torque generated by the weight of the curtain during the production process. However, since the weight of the curtain will change with the material and size, it is necessary to constantly select and adjust the torque of the torsion spring to match the curtains of different materials and sizes. The accuracy requirements of the torsion spring are high, resulting in the need to customize the corresponding torsion spring for each roller shutter. Not only is the adjustment efficiency low and the production cost high, but the torsion spring of the same specification cannot be adapted to curtains of different materials and sizes, and the versatility is low. At the same time, after long-term use, the torsion spring is prone to deformation or aging, causing the torque to deviate or decrease. When the customized torque becomes smaller, the torque of the spring will be less than the torque of the curtain weight, causing the curtain to slide down due to its own weight, which cannot meet the user's need to stay in a certain position accurately.

[0004] Therefore, it is urgent to design a hand-pushed windproof roller blind one-way damper and a hand-pushed windproof roller blind, which can ensure that the curtain will not slide down due to its own weight, so that the curtain can stay in the required position more accurately, and reduce the balance requirements between the torque force of the torsion spring and the torque generated by the gravity of the curtain, so that it can adapt to curtains of different materials and sizes, with high versatility and practicality. At the same time, it effectively reduces the production cost, improves the adjustment efficiency and the number of pre-tightening circles of the torsion spring, and has a simple structure, effectively meets the needs of users, and improves the user experience. Utility Model Content

[0005] In order to overcome the problems existing in the related art, the present application provides a hand-pushed windproof roller blind one-way damper and a hand-pushed windproof roller blind, which can ensure that the curtain will not slide down due to its own weight, so that the curtain can stay in the required position more accurately, and reduce the balance requirements between the torque force of the torsion spring and the torque generated by the gravity of the curtain, so that it can adapt to curtains of different materials and sizes, with high versatility and high practicality. At the same time, it effectively reduces the production cost, improves the adjustment efficiency and the number of pre-tightening circles of the torsion spring, and has a simple structure, effectively meets the needs of users, and improves the user experience.

[0006] One of the purposes of the present application is to provide a hand-pushed windproof roller shutter one-way damper, comprising a damper body, a transmission shaft, a one-way drive assembly and a crown wheel assembly; the one-way drive assembly and the crown wheel assembly are both mounted on the transmission shaft and are arranged in sequence along the axial direction of the transmission shaft; the damper body is connected to the one-way drive assembly; the crown wheel assembly is connected to the roller tube of the roller shutter; wherein the one-way drive assembly can only rotate in a clockwise or counterclockwise direction, so as to restrict the rotation direction of the transmission shaft.

[0007] In a preferred technical solution of the present application, the one-way drive assembly includes a driving shaft and a one-way spring; the driving shaft is sleeved on the transmission shaft and connected to the one-way spring; the one-way spring is sleeved on the damper body and has an interference fit with the damper body.

[0008] In a preferred technical solution of the present application, the driving shaft comprises a narrow diameter portion and a wide diameter portion which are connected to each other; the narrow diameter portion is sleeved on one end of the driving shaft; a strip groove is provided on the wide diameter portion; and the end of the one-way spring is arranged in the strip groove.

[0009] In a preferred technical solution of the present application, the one-way drive assembly includes a stop shaft and a needle roller; one end of the stop shaft is sleeved on the transmission shaft, and the other end is arranged in the damper body, and a movable gap is provided between the stop shaft and the damper body; the needle roller is arranged at the movable gap, so that the stop shaft can only rotate in a clockwise or counterclockwise direction relative to the damper body.

[0010] In a preferred technical solution of the present application, a needle roller groove is provided on the end side of the stop shaft, and the groove pitch of the needle roller groove decreases successively along the circumferential direction of the stop shaft; the needle roller is arranged in the needle roller groove.

[0011] In a preferred technical solution of the present application, the crown wheel assembly includes a crown wheel and a one-way bearing; the one-way bearing is sleeved on the transmission shaft; and the crown wheel is sleeved on the one-way bearing.

[0012] In a preferred technical solution of the present application, the crown wheel assembly also includes a wheel plug; the wheel plug is sleeved on the transmission shaft and is arranged in sequence with the one-way bearing along the axial direction of the transmission shaft; the crown wheel is sleeved on the wheel plug and abuts against the wheel plug.

[0013] In a preferred technical solution of the present application, the crown wheel assembly further includes an elastic retaining ring; an annular groove is provided at one end of the transmission shaft; the elastic retaining ring is arranged in the annular groove to position the crown wheel on the transmission shaft.

[0014] In the preferred technical solution of the present application, it also includes a body sleeve; the body sleeve is sleeved on the damper body; the one-way spring is sleeved on the body sleeve and has an interference fit with the body sleeve.

[0015] The second purpose of the present application is to provide a hand-push windproof roller blind, including the above-mentioned hand-push windproof roller blind one-way damper.

[0016] The technical solution provided by this application may have the following beneficial effects:

[0017] The hand-pushed windproof roller blind one-way damper provided in the present application includes a damper body, a transmission shaft, a one-way drive assembly and a crown wheel assembly. When the curtain stops and slides down due to its own weight, the one-way spring is pressed against the body sleeve, which greatly increases the friction between the one-way spring and the body sleeve, and then acts on the drive shaft and is synchronously transmitted to the transmission shaft, the crown wheel and the roller tube, thereby making the drive shaft, the transmission shaft and the crown wheel unable to rotate, thereby stopping the curtain and allowing the curtain to stay at the required position more accurately.

[0018] Since the hand-pushed windproof roller shutter one-way damper can effectively prevent the curtain from sliding down due to its own weight, the counterweight of the bottom rail can be increased to increase the number of pre-tightening turns of the torsion spring. Moreover, since there is no need to maintain a precise balance between the torque force of the torsion spring and the torque generated by the gravity of the curtain, it can be adapted to curtains of different materials and sizes, and has high versatility and strong practicality.

[0019] Compared with the existing hand-pushed windproof roller blinds, the one-way damper provided by the present application can ensure that the curtain will not slide down due to its own weight, so that the curtain can stay in the required position more accurately, reducing the balance requirements between the torque force of the torsion spring and the torque generated by the gravity of the curtain, so that it can adapt to curtains of different materials and sizes, with high versatility and high practicality. At the same time, it effectively reduces the production cost, improves the adjustment efficiency and the number of pre-tightening turns of the torsion spring. Moreover, because it prevents the curtain from falling in one direction, when the curtain rises, the one-way damper does not generate resistance to the roller tube, so that the curtain can rise faster and more labor-saving.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0022] Figure 1 is an exploded schematic diagram of a hand-pushed windproof roller blind one-way damper shown in an embodiment of the present application;

[0023] Figure 2 It is a structural schematic diagram of a hand-pushed windproof roller blind one-way damper shown in an embodiment of the present application;

[0024] Figure 3 is another structural schematic diagram of the hand-pushed windproof roller blind one-way damper shown in an embodiment of the present application;

[0025] Figure 4 It is a partial structural schematic diagram of a hand-pushed windproof roller blind one-way damper shown in an embodiment of the present application;

[0026] Figure 5 is a schematic structural diagram of a damper body shown in an embodiment of the present application;

[0027] Figure 6 is a schematic structural diagram of a crown wheel assembly shown in an embodiment of the present application;

[0028] Figure 7 It is a partial front view schematic diagram of a hand-pushed windproof roller blind one-way damper shown in an embodiment of the present application;

[0029] Figure 8 is an exploded schematic diagram of another one-way drive assembly shown in an embodiment of the present application;

[0030] Fig. 9 It is a schematic structural diagram of another one-way drive assembly shown in an embodiment of the present application.

[0031] Reference numerals:

[0032] 1. Damper body; 11. First body; 12. Second body; 2. Transmission shaft; 21. Annular groove; 31. Driving shaft; 311. Narrow diameter portion; 312. Wide diameter portion; 313. Strip groove; 32. One-way spring; 33. Stop shaft; 34. Needle roller; 35. Needle roller groove; 4. Crown wheel assembly; 41. Crown wheel; 42. One-way bearing; 43. Wheel plug; 44. Circlip; 5. Body sleeve; 6. Protective sleeve; 7. Screw hole; 8. Screw. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0034] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0035] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0036] The existing hand-pushed windproof roller blinds need to constantly select and adjust the torque of the torsion spring to match the curtains of different materials and sizes during the production process, which requires high precision of the torsion spring and low versatility. At the same time, after long-term use, the torsion spring is prone to deformation or aging, resulting in deviation or reduction of the torque, so that the curtain will slide down due to its own weight when it stops, which cannot meet the user's need to stay in a certain position accurately.

[0037] In response to the above problems, the embodiments of the present application provide a hand-pushed windproof roller shutter one-way damper and a hand-pushed windproof roller shutter, which can ensure that the curtain will not slide down due to its own weight, so that the curtain can stay in the required position more accurately, reducing the balance requirement between the torque force of the torsion spring and the torque generated by the gravity of the curtain, so that it can adapt to curtains of different materials and sizes, with high versatility, simple structure and low cost.

[0038] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0039] Embodiment 1

[0040] See also Figure 1-Figure 7The hand-pushed windproof roller blind one-way damper of the present application comprises a damper body 1, a transmission shaft 2, a one-way drive assembly and a crown wheel assembly 4. The one-way drive assembly and the crown wheel assembly 4 are both sleeved on the transmission shaft 2 and arranged in sequence along the axial direction of the transmission shaft 2, so that the centers of gravity of the transmission shaft 2, the one-way drive assembly and the crown wheel assembly 4 can be connected in a straight line. In order to improve the stability and durability of the structure, the damper body 1, the transmission shaft 2, the one-way drive assembly and the crown wheel assembly 4 are preferably made of stainless steel and aluminum alloy.

[0041] The damper body 1 includes a first body 11 and a second body 12, and the first body 11 and the second body 12 are integrally formed. In order to protect the damper body 1 and reduce the wear of the damper body 1, the hand-pushed windproof roller blind one-way damper also includes a body sleeve 5. The body sleeve 5 is sleeved on the damper body 1, specifically, the body sleeve 5 is sleeved on the first body 11 and connected to the one-way drive assembly.

[0042] The one-way drive assembly is connected to the transmission shaft 2 and the damper body 1 respectively, wherein the one-way drive assembly can only rotate in a clockwise or counterclockwise direction, and is used to restrict the rotation direction of the transmission shaft 2. Specifically, Figure 1 , Figure 4 , Figure 5 and Figure 7 As shown, the one-way drive assembly includes a drive shaft 31 and a one-way spring 32. The drive shaft 31 is sleeved on the transmission shaft 2, and the one-way spring 32 is connected to the drive shaft 31 and the damper body 1 respectively. More specifically, the drive shaft 31 includes a narrow diameter portion 311 and a wide diameter portion 312 that are connected to each other. The narrow diameter portion 311 is sleeved on one end of the transmission shaft 2 so that the drive shaft 31 can rotate with the transmission shaft 2. The wide diameter portion 312 is provided with a strip groove 313, and the end of the one-way spring 32 is arranged in the strip groove 313. At the same time, the one-way spring 32 is sleeved on the damper body 1 and has an interference fit with the damper body 1. Exemplarily, the one-way spring 32 is sleeved on the first body 11. Preferably, in order to reduce the wear of the first body 11, the one-way spring 32 is sleeved on the body sleeve 5 and has an interference fit with the body sleeve 5. That is, the one-way spring 32 includes a body and an end portion, wherein the body is spirally shaped and sleeved on the body sleeve 5 , and the end portion extends into the strip groove 313 in a direction away from the body and abuts against the groove wall of the strip groove.

[0043] Furthermore, if Figure 1 and Figure 2As shown, in order to protect the one-way drive assembly, the hand-pushed windproof roller blind one-way damper further includes a protective sleeve 6, which is sleeved on the drive shaft 31 and connected to the damper body 1. Specifically, screw holes 7 are provided at corresponding positions of the protective sleeve 6 and the damper body 1, and screws 8 are passed through the screw holes 7 on the protective sleeve 6 and the damper body 1 in sequence, thereby fixing the protective sleeve 6 on the damper body 1.

[0044] The crown wheel assembly 4 is sleeved on the transmission shaft 2 and connected to the roller tube of the rolling curtain. Figure 1 As shown, the crown wheel assembly 4 includes a crown wheel 41 and a one-way bearing 42. The one-way bearing 42 is sleeved on the transmission shaft 2, and the crown wheel 41 is sleeved on the one-way bearing 42. Further, in order to prevent the crown wheel 41 from deviating during rotation, as shown in FIG. Figure 6 and Figure 7 As shown, the crown wheel assembly 4 also includes a wheel plug 43 adapted to the crown wheel 41. The wheel plug 43 is sleeved on the transmission shaft 2 and is sequentially arranged with the one-way bearing 42 along the axial direction of the transmission shaft 2. The crown wheel 41 is sleeved on the wheel plug 43 and abuts against the wheel plug 43. The width of the crown wheel 41 is slightly greater than or equal to the sum of the widths of the one-way bearing 42 and the wheel plug 43, so that the crown wheel 41 can cover the one-way bearing 42 and the wheel plug 43.

[0045] Furthermore, in order to prevent the crown wheel 41 from being separated from the transmission shaft 2, the crown wheel assembly 4 further includes an elastic retaining ring 44, and the elastic retaining ring 44 is clamped on the transmission shaft 2 to position the crown wheel 41 on the transmission shaft 2. Specifically, Figure 1 , Figure 3 and Figure 7 As shown, an annular groove 21 is provided at one end of the transmission shaft 2, and the elastic retaining ring 44 is arranged in the annular groove 21. When the one-way bearing 42 and the crown wheel 41 are sleeved on the transmission shaft 2, the annular groove 21 extends out of the plane where the crown wheel 41 is located, so that the elastic retaining ring 44 can abut against one side surface of the crown wheel 41, and at this time, the other side surface opposite to the crown wheel 41 contacts the narrow diameter portion 311 of the driving shaft 31.

[0046] Working principle:

[0047] After the hand-push windproof roller blind one-way damper is applied to the hand-push windproof roller blind, when the user uses his hand to apply an upward force under the curtain to make the curtain rise, the torsion spring releases energy and the roller tube moves clockwise. At this time, the crown wheel 41, the wheel plug 43, the transmission shaft 2, and the drive shaft 31 rotate synchronously clockwise, giving the end of the one-way spring 32 a force away from its axis, driving the main body sleeve 5 to move synchronously clockwise, thereby realizing synchronous linkage. At this time, there is less resistance preventing the curtain from rising, so that the curtain can be raised faster and more labor-saving. When the curtain stops, the hand force is withdrawn, and the curtain has a downward movement tendency under the action of the torque generated by its own weight, driving the crown wheel 41, the wheel plug 43, the transmission shaft 2, and the drive shaft 31 to synchronously have a tendency to rotate (i.e., rotate counterclockwise), giving the end of the one-way spring 32 a force toward its axis, so that the end of the one-way spring 32 can be pressed against the main body sleeve 5, thereby greatly increasing the friction between the one-way spring 32 and the main body sleeve 5, making the main body sleeve 5 unable to rotate, and then synchronously transmitted to the transmission shaft 2, the crown wheel 41 and the winding tube, making the transmission shaft 2 and the crown wheel 41 unable to rotate, thereby stopping the curtain, and effectively preventing the curtain from sliding down when stopped.

[0048] In the first embodiment of the present invention, the hand-pushed windproof roller blind one-way damper provided by the present application includes a damper body, a transmission shaft, a one-way drive assembly and a crown wheel assembly. When the curtain stops and slides down due to its own weight, the one-way spring is pressed against the body sleeve, which greatly increases the friction between the one-way spring and the body sleeve, and then acts on the drive shaft and is synchronously transmitted to the transmission shaft, the crown wheel and the roller tube, thereby making the drive shaft, the transmission shaft and the crown wheel unable to rotate, thereby stopping the curtain and allowing the curtain to stay at the required position more accurately.

[0049] Since the hand-pushed windproof roller shutter one-way damper can effectively prevent the curtain from sliding down due to its own weight, the counterweight of the bottom rail can be increased to increase the number of pre-tightening turns of the torsion spring. Moreover, since there is no need to maintain a precise balance between the torque force of the torsion spring and the torque generated by the gravity of the curtain, it can be adapted to curtains of different materials and sizes, and has high versatility and strong practicality.

[0050] Compared with the existing hand-pushed windproof roller blinds, the one-way damper provided by the present application can ensure that the curtain will not slide down due to its own weight, so that the curtain can stay in the required position more accurately, reducing the balance requirements between the torque force of the torsion spring and the torque generated by the gravity of the curtain, so that it can adapt to curtains of different materials and sizes, with high versatility and practicality. At the same time, it effectively reduces the production cost, improves the adjustment efficiency and the number of pre-tightening turns of the torsion spring. Moreover, because it prevents the curtain from falling in one direction, when the curtain rises, it does not generate resistance to the roller tube, so that the curtain can rise faster and more labor-saving.

[0051] Embodiment 2

[0052] As a parallel implementation scheme of the first embodiment, the difference between the second embodiment and the first embodiment is only the specific structure of the one-way drive assembly. The other structures are detailed in the first embodiment and will not be repeated here.

[0053] See also Figure 1-Figure 9 The one-way drive assembly provided in the second embodiment includes a stop shaft 33 and a needle roller 34, one end of the stop shaft 33 is sleeved on the transmission shaft 2, and the other end is arranged in the damper body 1, and an active gap is provided between the stop shaft 33 and the damper body 1, and the needle roller 34 is arranged at the active gap, so that the stop shaft 33 can only rotate in the clockwise or counterclockwise direction relative to the damper body 1.

[0054] Specifically, Figure 8-Figure 9 As shown, the end side of the stop shaft 33 is provided with a needle roller groove 35, and the groove pitch of the needle roller groove 35 decreases in sequence along the circumferential direction of the stop shaft 33; the needle roller 34 is arranged in the needle roller groove 35. Further, in order to reduce the wear of the damper body 1, in this structure, the body sleeve 5 can be arranged in the first body 11.

[0055] Working principle:

[0056] After the hand-push windproof roller blind one-way damper is applied to the hand-push windproof roller blind, when the user uses his hand to apply an upward force under the curtain to make the curtain rise, the torsion spring releases energy and the roller tube moves clockwise. At this time, the crown wheel 41, the wheel plug 43, the transmission shaft 2, and the stop shaft 33 rotate synchronously clockwise, so that the needle roller 34 moves in the direction of increasing the groove pitch. Since the needle roller 34 can rotate by itself, the above structure can rotate smoothly clockwise. At this time, there is less resistance to prevent the curtain from rising, so that the curtain can be raised faster and more labor-saving. When the curtain stops, the hand force is withdrawn, and the curtain has a downward movement tendency under the action of the torque generated by its own weight, driving the crown wheel 41, the wheel plug 43, the transmission shaft 2, and the stop shaft 33 to synchronously have a tendency to rotate (i.e., rotate counterclockwise). At this time, since the needle roller 34 moves in the direction of smaller slot pitch, the needle roller 34 cannot rotate by itself, and is thus stuck between the stop shaft 33 and the damper body 1, making it impossible for the stop shaft 33 to rotate counterclockwise, and synchronously acts on the transmission shaft 2, the wheel plug 43, the crown wheel 41 and the winding tube, making it impossible for the transmission shaft 2 and the crown wheel 41 to rotate counterclockwise, thereby stopping the curtain and ensuring that the curtain will not slide down due to its own weight.

[0057] In the second embodiment, the principle of the one-way driving component provided in the second embodiment is similar to that of the first embodiment. The working process thereof is detailed in the working principle, and the effect thereof is detailed in the first embodiment, which will not be described again here.

[0058] Embodiment 3

[0059] Corresponding to the above-mentioned hand-pushed windproof roller blind one-way damper, the present application also provides a hand-pushed windproof roller blind, please refer to Figure 1-Figure 9 , specifically:

[0060] Based on the structure of the above-mentioned embodiment 1 or embodiment 2, the hand-pushed windproof roller blind provided in this embodiment 3 includes a roller tube, a curtain cloth and the above-mentioned hand-pushed windproof roller blind one-way damper.

[0061] The hand-pushed windproof roller blind one-way damper is connected to the rolling tube. Specifically, the rolling tube is sleeved on the crown wheel 41, and the curtain fabric is rolled on the rolling tube.

[0062] The specific structure of the hand-pushed windproof roller blind one-way damper is detailed in the above-mentioned embodiment 1 and embodiment 2, and will not be repeated here.

[0063] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0064] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A one-way damper for a hand-pushed windproof roller blind, characterized in that: It comprises a damper body (1), a transmission shaft (2), a one-way drive assembly and a crown wheel assembly (4); The one-way drive assembly and the crown wheel assembly (4) are both sleeved on the transmission shaft (2) and are arranged in sequence along the axial direction of the transmission shaft (2); The damper body (1) is connected to the one-way drive assembly; The crown wheel assembly (4) is connected to the roller tube of the rolling blind; The one-way drive assembly can only rotate in a clockwise or counterclockwise direction, and is used to restrict the rotation direction of the transmission shaft (2).

2. The hand-pushed windproof roller blind one-way damper according to claim 1 is characterized in that: The one-way driving assembly comprises a driving shaft (31) and a one-way spring (32); The driving shaft (31) is sleeved on the transmission shaft (2) and connected to the one-way spring (32); The one-way spring (32) is sleeved on the damper body (1) and is interference fit with the damper body (1).

3. The hand-pushed windproof roller blind one-way damper according to claim 2 is characterized in that: The driving shaft (31) comprises a narrow diameter portion (311) and a wide diameter portion (312) which are connected to each other; The narrow diameter portion (311) is sleeved on one end of the transmission shaft (2); The wide diameter portion (312) is provided with a strip-shaped groove (313); The end of the one-way spring (32) is arranged in the strip-shaped groove (313).

4. The hand-pushed windproof roller blind one-way damper according to claim 1 is characterized in that: The one-way drive assembly comprises a stop shaft (33) and a needle roller (34); One end of the stop shaft (33) is sleeved on the transmission shaft (2), and the other end is arranged inside the damper body (1), and a movable gap is provided between the stop shaft (33) and the damper body (1); The needle roller (34) is arranged at the movable gap, so that the stop shaft (33) can only rotate in a clockwise or counterclockwise direction relative to the damper body (1).

5. The hand-pushed windproof roller blind one-way damper according to claim 4 is characterized in that: The end side of the stop shaft (33) is provided with a needle roller groove (35). The groove pitch of the needle roller groove (35) decreases in sequence along the circumferential direction of the stop shaft (33); The needle roller (34) is arranged in the needle roller groove (35).

6. The hand-pushed windproof roller blind one-way damper according to claim 1, characterized in that: The crown wheel assembly (4) comprises a crown wheel (41) and a one-way bearing (42); The one-way bearing (42) is sleeved on the transmission shaft (2); The crown wheel (41) is sleeved on the one-way bearing (42).

7. The hand-pushed windproof roller blind one-way damper according to claim 6, characterized in that: The crown wheel assembly (4) further comprises a wheel plug (43); The wheel plug (43) is sleeved on the transmission shaft (2), and is arranged in sequence with the one-way bearing (42) along the axial direction of the transmission shaft (2); The crown wheel (41) is sleeved on the wheel plug (43) and abuts against the wheel plug (43).

8. The hand-pushed windproof roller blind one-way damper according to claim 1, characterized in that: The crown wheel assembly (4) further comprises an elastic retaining ring (44); One end of the transmission shaft (2) is provided with an annular groove (21); The elastic retaining ring (44) is arranged in the annular groove (21) and is used to position the crown wheel (41) on the transmission shaft (2).

9. The hand-pushed windproof roller blind one-way damper according to claim 2, characterized in that: Also includes a body sleeve (5); The body shaft sleeve (5) is sleeved on the damper body (1); The one-way spring (32) is sleeved on the main body sleeve (5) and is interference fit with the main body sleeve (5).

10. A hand-pushed windproof roller blind, characterized in that: A one-way damper for a hand-pushed windproof roller blind comprising the one-way damper for a hand-pushed windproof roller blind as described in any one of claims 1 to 9.

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