Retractor and device with same

Abstract

The utility model provides a winder and a device with the winder. The winder comprises a driving mechanism, a transmission mechanism and a winding device used for winding and unwinding a braid. The driving mechanism is in driving connection with the transmission mechanism and is used for driving the transmission mechanism to rotate in a preset first direction; the end, away from the driving mechanism, of the transmission mechanism is in transmission connection with the winding device, and the transmission mechanism is used for driving the winding device to rotate in the preset second direction under driving of the driving mechanism so that the winding device can drive the braid to be switched between the tightening state and the loosening state. Through the arrangement of the driving mechanism and the transmission mechanism, the transmission mechanism is driven by the driving mechanism to drive the winding device used for winding and unwinding the braid to rotate, so that the winding device drives the braid to be switched between the tightening state and the loosening state, and the tightness of the safety belt is automatically adjusted; and the safety belt is adjusted to a proper and safe range, so that the user experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to safe seat technical field, concretely relates to a retractor and the device with it. BACKGROUND

[0002] The traditional safety seat's webbing is composed of ALOK regulator, safety belt, crotch belt and buckle, and the ALOK regulator is used for adjusting the tightness of the safety belt, and provides certain locking force to ensure that the safety belt has restraint force to the passenger when the vehicle collides.

[0003] The adjustment operation is complicated, because the clothes worn by children are thick or thin, every time the child is placed on the seat, it is required to manually adjust the tightness of the safety belt (to achieve the purpose of safety restraint), therefore in reality, many users omit the action of adjusting the tightness of the safety belt, just simply buckle the safety buckle, which undoubtedly leaves a safety hazard.

[0004] The tightness adjustment of the safety belt has no standard, and the user often does not know what tightness is appropriate, so the user either adjusts the safety belt very loose or very tight, which brings negative impact on the riding comfort of the child. INVENTION CONTENTS

[0005] The utility model provides a retractor and the device with it in view of the deficiency in the prior art, and the specific scheme is as follows:

[0006] Firstly, the application provides a retractor, which comprises a driving mechanism, a transmission mechanism and a winding device for winding and unwinding the webbing, the driving mechanism is drivingly connected to the transmission mechanism, and the driving mechanism is used to drive the transmission mechanism to rotate in a preset first direction.

[0007] One end of the transmission mechanism away from the driving mechanism is drivingly connected to the winding device, and the transmission mechanism is used to drive the winding device to rotate in a preset second direction under the driving of the driving mechanism, so that the winding device drives the webbing to switch between the tightening state and the relaxation state.

[0008] In one embodiment, the transmission mechanism comprises a first transmission part and a second transmission part, one end of the first transmission part is drivingly connected to the driving mechanism, the other end of the first transmission part is drivingly connected to the second transmission part, and the first transmission part is used to drive the second transmission part to rotate in the first direction under the driving of the driving mechanism.

[0009] One end of the second transmission part away from the first transmission part is drivingly connected to the winding device, and the second transmission part is used to drive the winding device to rotate in the second direction under the driving of the first transmission part.

[0010] In one specific embodiment, the first transmission part comprises a first bevel gear and a second bevel gear, the first bevel gear is connected with one of the driving mechanism and the second transmission part, the second bevel gear is connected with the other one of the driving mechanism and the second transmission part; the first bevel gear is meshed with the second bevel gear.

[0011] In one specific embodiment, an angle is formed between the axis of the first bevel gear and the axis of the second bevel gear;

[0012] The transmission ratio between the first bevel gear and the second bevel gear comprises 0.5:1-1.5:1.

[0013] In one specific embodiment, the second transmission part comprises a worm wheel and a worm, the worm wheel is connected with one of the first transmission part and the winding device, the worm is connected with the other one of the first transmission part and the winding device; the worm wheel is meshed with the worm.

[0014] In one specific embodiment, the transmission ratio between the worm wheel and the worm comprises 1:35-1:10.

[0015] In one specific embodiment, the winding device comprises a first winding part and a second winding part, the first winding part is drivingly connected with the end of the transmission mechanism away from the driving mechanism, the second winding part is drivingly connected with the side of the first winding part away from the transmission mechanism.

[0016] In one specific embodiment, the first winding part comprises a first spur gear, the second winding part comprises a second spur gear, the first spur gear is meshed with the second spur gear;

[0017] The transmission ratio between the first spur gear and the second spur gear comprises 1:5-1:1.

[0018] In one specific embodiment, two winding devices are included, each winding device is connected with a tape; both winding devices are drivingly connected with the end of the transmission mechanism away from the driving mechanism.

[0019] In the second part, the application provides a device comprising the winding device mentioned in the above technical solution.

[0020] Advantages:

[0021] The application sets the driving mechanism and the transmission mechanism, so that the transmission mechanism drives the winding device for winding and unwinding the belt to rotate under the driving of the driving mechanism, so as to drive the winding device to switch the belt between the tightening state and the loosening state, automatically adjust the tightness of the safety belt, adjust the safety belt to a suitable and safe range, and improve the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 is a schematic view of the three-dimensional structure of the present application;

[0024] Figure 2 is another schematic view of the three-dimensional structure of the present application;

[0025] Figure 3 is an exploded schematic view of the three-dimensional structure of the present application;

[0026] Figure 4 is a schematic view of the rotation direction of the winding device when the belt is loosened of the present application;

[0027] Figure 5 is a schematic view of the rotation direction of the winding device when the belt is tightened of the present application;

[0028] Figure 6 is a schematic view of the three-dimensional structure of the second embodiment of the present application.

[0029] The reference signs are as follows: 1-driving mechanism; 2-transmission mechanism; 21-first transmission part; 211-first helical gear; 212-second helical gear; 22-second transmission part; 221-worm wheel; 222-worm; 3-winding device; 31-first winding part; 311-first straight tooth cylindrical gear; 32-second winding part; 321-second straight tooth cylindrical gear; A-device; a-winder. DETAILED DESCRIPTION

[0030] The concept, specific structure and generated technical effects of the present application will be described clearly and completely in the following by combining with the embodiments and drawings, so as to fully understand the purpose, features and effects of the present application.

[0031] Hereinafter, various embodiments of the present application will be described more fully. The present application may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the application to those skilled in the art.

[0032] Hereinafter, the term "include" or "may include" used in various embodiments of the present application indicates the presence of the disclosed functions, operations, or elements and does not limit the addition of one or more functions, operations, or elements. Also, as used in various embodiments of the present application, the terms "include", "have", and their conjugates merely indicate the presence of the mentioned features, numbers, steps, operations, elements, components, or combinations thereof, and should not be construed as excluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof.

[0033] In various embodiments of the present application, the expression "or" or "at least one of A or / and B" includes any combination of the listed terms or all the terms. For example, the expression "A or B" or "at least one of A or / and B" can include A, can include B, or can include both A and B.

[0034] The expressions (such as "first", "second", and the like) used in various embodiments of the present application can modify various constituent elements in various embodiments, but can not limit the corresponding constituent elements. For example, the above expressions do not limit the order and / or importance of the described elements. The above expressions are used only for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, the first element can be referred to as the second element, and likewise, the second element can be referred to as the first element, without departing from the scope of various embodiments of the present application.

[0035] It should be noted that in the present application, unless otherwise explicitly specified and defined, the terms "mount", "connect", "fix", and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be direct connection, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the utility model, the person skilled in the art needs to understand that the terms indicating the orientation or position relationship in the article are based on the orientation or position relationship shown in the drawing, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the utility model.

[0037] The terms used in various embodiments of the utility model are only for the purpose of describing specific embodiments and are not intended to limit various embodiments of the utility model. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which various embodiments of the utility model belong. The terms (such as the terms defined in the commonly used dictionary) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning unless clearly defined in various embodiments of the utility model.

[0038] Embodiment one

[0039] The embodiment sets the driving mechanism and the transmission mechanism, so that the transmission mechanism drives the winding device for winding and unwinding the belt to rotate under the driving of the driving mechanism, so that the winding device drives the belt to switch between the tightening state and the relaxation state, realizes the automatic adjustment of the tightness of the safety belt, adjusts the safety belt to the appropriate and safe range, and improves the user experience. The specific scheme is as follows:

[0040] A winding device, as shown in the accompanying Figure 1 The driving mechanism 1 drives the transmission mechanism 2, and the driving mechanism 1 is used to drive the transmission mechanism 2 to rotate in a preset first direction.

[0041] The end of the transmission mechanism 2 away from the driving mechanism 1 is drivingly connected to the winding device 3, and the transmission mechanism 2 is used to drive the winding device 3 to rotate in a preset second direction under the driving of the driving mechanism 1, so that the winding device 3 drives the belt to switch between the tightening state and the relaxation state.

[0042] The embodiment provides a winding device, which comprises a driving mechanism 1, a transmission mechanism 2 and a winding device 3 responsible for winding and unwinding a belt. The driving mechanism 1 provides continuous and stable power and drivingly connects the transmission mechanism 2, ensures effective transmission of power, and drives the transmission mechanism 2 to rotate smoothly in a preset first direction.

[0043] The transmission mechanism 2 is drivingly connected to the winding device 3 away from one end of the driving mechanism 1. Under the driving of the driving mechanism 1, the transmission mechanism 2 not only stably transmits power, but also drives the winding device 3 to rotate in a preset second direction (in this embodiment, the first direction and the second direction are perpendicular to each other, and in actual application, they can also be adjusted according to actual needs), so that the winding device 3 can flexibly switch the state of the belt and freely convert between the tightening state and the loosening state, realize automatic adjustment of the tightness of the safety belt, and adjust the safety belt to a suitable and safe range, and improve the user experience.

[0044] In one specific embodiment, as shown in the accompanying drawings, Figure 2 The transmission mechanism 2 includes a first transmission part 21 and a second transmission part 22. One end of the first transmission part 21 is drivingly connected to the driving mechanism 1, and the other end of the first transmission part 21 is drivingly connected to the second transmission part 22. The first transmission part 21 is used to drive the second transmission part 22 to rotate in a first direction under the driving of the driving mechanism 1.

[0045] The second transmission part 22 is drivingly connected to the winding device 3 away from one end of the first transmission part 21. The second transmission part 22 is used to drive the winding device 3 to rotate in a second direction under the driving of the first transmission part 21.

[0046] One end of the first transmission part 21 is drivingly connected to the driving mechanism 1 to ensure effective transmission of power. When the driving mechanism 1 is started, the first transmission part 21 starts to rotate. The other end of the first transmission part 21 is connected to the second transmission part 22 to form a continuous transmission chain. Under the driving of the first transmission part 21, the second transmission part 22 rotates in a preset first direction.

[0047] Further, one end of the second transmission part 22 away from the first transmission part 21 is drivingly connected to the winding device 3, so that when the second transmission part 22 rotates under the driving of the first transmission part 21, it can further drive the winding device 3 to rotate in a preset second direction.

[0048] In one specific embodiment, as shown in the accompanying drawings, Figure 3 The first transmission part 21 includes a first bevel gear 211 and a second bevel gear 212. The first bevel gear 211 is connected to one of the driving mechanism 1 and the second transmission part 22, and the second bevel gear 212 is connected to the other one of the driving mechanism 1 and the second transmission part 22. The first bevel gear 211 is meshingly connected to the second bevel gear 212.

[0049] In this embodiment, the first bevel gear 211 and the second bevel gear 212 are staggered and meshingly connected to change the direction of power transmission, ensure effective transmission of power, and improve the stability and reliability of transmission.

[0050] Interlaced helical gears are transmission mechanisms in which two helical gears have the same number of teeth, intersect each other, but their axes do not intersect. Compared with traditional parallel shaft gears, interlaced helical gears have higher transmission efficiency and can transmit power better; the meshing of interlaced helical gears is smoother, so the noise generated is relatively lower; and because the manufacturing and installation requirements of interlaced helical gears are higher, their transmission accuracy is also relatively higher.

[0051] In practical applications, different transmission ratios and the direction of rotation of the driven shaft can be achieved by changing the size and direction of the helix angle of the first helical gear 211 and the second helical gear 212, so as to meet various transmission requirements.

[0052] In one specific embodiment, the axis of the first helical gear 211 and the axis of the second helical gear 212 form an angle; in practical applications, the direction and angle of transmission can be changed by adjusting the size of the angle, thereby meeting the application requirements in different scenarios.

[0053] The transmission ratio between the first helical gear 211 and the second helical gear 212 ranges from 0.5:1 to 1.5:1. This ensures both smooth transmission and improved efficiency. When the drive mechanism 1 provides power, this transmission ratio ensures a reasonable distribution of rotational speed between the first helical gear 211 and the second helical gear 212, thereby enabling the entire transmission mechanism to operate more efficiently.

[0054] In one specific embodiment, as shown in the appendix Figure 3 As shown, the second transmission unit 22 includes a worm gear 221 and a worm 222. The worm gear 221 is connected to one of the first transmission unit 21 and the winding device 3, and the worm 222 is connected to the other of the first transmission unit 21 and the winding device 3. The worm gear 221 and the worm 222 are meshed together.

[0055] In this embodiment, the worm gear 221 is connected to the first transmission unit 21, and the worm 222 is connected to the winding device 3, which ensures the effective transmission of power and provides a solid foundation for subsequent transmission operations.

[0056] The worm gear 221 and worm 222 are meshed together. When the first transmission unit 21 transmits power to the worm 222, the worm 222 drives the worm gear 221 to rotate, thereby transmitting power to the winding device 3. This not only makes the transmission process more efficient and smooth, but also achieves the effect of speed reduction and torque increase. The transmission method of the worm gear 221 and worm 222 has a compact structure, a large transmission ratio, and a certain degree of self-locking.

[0057] Further, the second transmission part 22 has a self-locking function. When the system is in certain specific working states, the worm wheel 221 can only be driven to rotate by the worm 222 in one direction, and the worm wheel 221 cannot drive the worm 222 in the opposite direction. When the belt is tightened, due to the self-locking property of the second transmission part 22, even if the pulling force transmitted on the belt is large, the belt in the winding device 3 cannot be pulled out to cause relaxation. This property not only improves the stability and safety of the system, but also ensures that the belt can maintain a long-lasting tension in the tightened state, thereby meeting the needs of various application scenarios. In addition, this self-locking function also enables the winding device to be automatically locked when it stops working, preventing accidental relaxation or shedding of the belt caused by external factors such as children struggling, vibration, etc.

[0058] In one specific embodiment, the transmission ratio between the worm wheel 221 and the worm 222 includes 1:35-1:10. Both the efficiency and stability of the transmission are considered, and the needs in actual application are also taken into account. Not only does this make the transmission mechanism more flexible in dealing with various complex working environments, but it also provides higher transmission precision and stability. At the same time, in actual application, by adjusting the transmission ratio between the worm wheel 221 and the worm 222, the performance of the transmission mechanism can be further optimized to meet the actual needs of different users.

[0059] In one specific embodiment, the winding device 3 includes a first winding part 31 and a second winding part 32, the first winding part 31 is in transmission connection with the end of the transmission mechanism 2 away from the driving mechanism 1, and the second winding part 32 is in transmission connection with the side of the first winding part 31 away from the transmission mechanism 2. This improves the flexibility and efficiency of the winding device, and also ensures the stability and reliability of the entire transmission system, thereby achieving automatic adjustment of the tightness of the safety belt and adjusting the safety belt to an appropriate and safe range, improving the user experience.

[0060] In one specific embodiment, the first winding part 31 includes a first spur gear 311, the second winding part 32 includes a second spur gear 321, and the first spur gear 311 is in meshing connection with the second spur gear 321. The tooth surface contact area of the spur gear is large and uniformly distributed, and it can withstand large loads and impacts, so the transmission is stable and reliable. The transmission ratio of the spur gear is determined by the number of teeth, and in actual application, different transmission ratios can be achieved by changing the tooth ratio of the gears. In addition, the manufacturing process of the spur gear is relatively mature, and the processing cost is relatively low. Due to the large and uniformly distributed tooth surface contact area, the service life of the spur gear is relatively long.

[0061] As shown in FIG. 1, the safety belt winding device 1 includes a driving mechanism 1, a transmission mechanism 2, and a winding device 3. The driving mechanism 1 is used to drive the transmission mechanism 2 to rotate, and the transmission mechanism 2 is used to drive the winding device 3 to rotate. The driving mechanism 1 includes a driving motor 11 and a driving gear 12, the driving motor 11 is in transmission connection with the driving gear 12, and the driving gear 12 is in meshing connection with the transmission mechanism 2. The transmission mechanism 2 includes a worm 222 and a worm wheel 221, the worm 222 is in transmission connection with the driving gear 12, and the worm wheel 221 is in transmission connection with the winding device 3. Figure 4As shown, the second winding part 32 contains two spur gears meshing with each other. When the belt needs to be loosened, the first spur gear 311 of the first winding part 31 rotates counterclockwise, the second spur gear 321 (i.e. the lower spur gear in the second winding part 32) connected with the first spur gear 311 rotates clockwise, and the upper spur gear in the second winding part 32 rotates counterclockwise, so that the belt is loosened from the first winding part 31.

[0062] On the contrary, as shown in the accompanying drawings, Figure 5 When the belt needs to be tightened, the first spur gear 311 of the first winding part 31 rotates clockwise, the second spur gear 321 (i.e. the lower spur gear in the second winding part 32) connected with the first spur gear 311 rotates counterclockwise, and the upper spur gear in the second winding part 32 rotates clockwise, so that the belt is tightened into the first winding part 31.

[0063] Further, the transmission ratio between the first spur gear 311 and the second spur gear 321 includes 1:5-1:1. Both the efficiency and stability of transmission are considered, and the needs in practical application are also taken into account. In practical application, the transmission ratio can be adjusted according to actual needs, so that the rotation speed between the first winding part 31 and the second winding part 32 can be flexibly controlled, thereby meeting different application scenarios and needs.

[0064] In one specific embodiment, two winding devices 3 are included, and each winding device 3 is connected with a belt; the two winding devices 3 are in transmission connection with the end of the transmission mechanism 2 away from the driving mechanism 1. The two winding devices 3 improve the flexibility and efficiency of the system, and provide higher reliability and stability for the system. By being equipped with the two winding devices 3, the system can more flexibly cope with various complex working environments and meet the diversified needs of users.

[0065] Embodiment two

[0066] As shown in the accompanying drawings, Figure 6 The present embodiment provides a device A, which includes the winder a mentioned in embodiment one.

[0067] The present application sets the driving mechanism and the transmission mechanism, so that the transmission mechanism drives the winding device for winding and unwinding the belt to rotate under the driving of the driving mechanism, so as to switch the belt between the tightening state and the loosening state, automatically adjust the tightness of the safety belt, adjust the safety belt to a suitable and safe range, and improve the user experience.

[0068] The above is a specific description of the preferred embodiment of the present application, but the present application is not limited to the embodiment, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A retractor characterized by, The application relates to a drive mechanism, a transmission mechanism and a winding device for winding and unwinding a belt, wherein the drive mechanism is connected to the transmission mechanism, and the drive mechanism is used to drive the transmission mechanism to rotate in a preset first direction; one end of the transmission mechanism away from the drive mechanism is connected to the winding device, and the transmission mechanism is used to drive the winding device to rotate in a preset second direction under the drive of the drive mechanism, so that the winding device drives the belt to switch between a tightening state and a loosening state. The transmission mechanism comprises a first transmission part and a second transmission part, one end of the first transmission part is connected to the drive mechanism, the other end of the first transmission part is connected to the second transmission part, and the first transmission part is used to drive the second transmission part to rotate in the first direction under the drive of the drive mechanism. One end of the second transmission part away from the first transmission part is connected to the winding device, and the second transmission part is used to drive the winding device to rotate in the second direction under the drive of the first transmission part.

2. A retractor according to claim 1, wherein, The first transmission part comprises a first bevel gear and a second bevel gear, one of the drive mechanism and the second transmission part is connected to the first bevel gear, and the other of the drive mechanism and the second transmission part is connected to the second bevel gear; the first bevel gear is connected to the second bevel gear in meshing mode. An angle is formed between the axis of the first bevel gear and the axis of the second bevel gear.

3. A retractor according to claim 2, wherein, The transmission ratio between the first bevel gear and the second bevel gear is 0.5:1-1.5:

1.

4. A retractor according to claim 3, wherein, The second transmission part comprises a worm wheel and a worm, one of the first transmission part and the winding device is connected to the worm wheel, and the other of the first transmission part and the winding device is connected to the worm; the worm wheel is connected to the worm in meshing mode. The transmission ratio between the worm wheel and the worm is 1:35-1:

10.

5. A retractor according to claim 2, wherein, The winding device comprises a first winding part and a second winding part, the first winding part is connected to one end of the transmission mechanism away from the drive mechanism in a transmission mode, and the second winding part is connected to one side of the first winding part away from the transmission mechanism in a transmission mode.

6. A retractor according to claim 5, wherein, The first winding part comprises a first spur gear, and the second winding part comprises a second spur gear; the first spur gear is connected to the second spur gear in meshing mode.

7. The retractor of claim 1, wherein The transmission ratio between the first spur gear and the second spur gear is 1:5-1:

1.

8. A retractor according to claim 7, wherein, Two winding devices are included, and each winding device is connected to one belt; the two winding devices are connected to one end of the transmission mechanism away from the drive mechanism in a transmission mode. The application further relates to a winding device according to any one of claims 1-9.

9. The retractor of claim 1, wherein, ​ 10. An apparatus, comprising: ​

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