A noise reducing self-reefing device

Abstract

The application provides a self-adaptive retractor with noise reduction, comprising a support, a mandrel, a toothed disc, a mandrel sleeve, a self-adaptive vehicle sensing assembly, a locking arm, a vehicle sensing pawl and a noise reduction block; wherein the noise reduction block is in transmission connection with the locking arm; when the locking arm rotates in the direction of ribbon pulling, the noise reduction block is driven to rotate in the direction away from the vehicle sensing pawl, so that the noise reduction block is separated from the vehicle sensing pawl; when the locking arm rotates in the direction of ribbon winding, the noise reduction block is driven to rotate in the direction close to the vehicle sensing pawl, so that the noise reduction block abuts against the vehicle sensing pawl and presses the vehicle sensing pawl against the vehicle sensing arm of the self-adaptive vehicle sensing assembly. The self-adaptive retractor with noise reduction provided by the application does not affect the normal vehicle sensing function of the retractor when the ribbon is pulled out, can limit the vehicle sensing ball and reduce noise when the ribbon is wound back, and has simple noise reduction structure and good noise reduction effect.

Description

Technical Field

[0001] This invention relates to the field of seat belt retractor technology, and more specifically to an adaptive retractor that reduces noise. Background Technology

[0002] The retractor refers to the retractor with an emergency locking function. It is a core component of car seat belts, and its functions include webbing retraction, vehicle tilt sensing, vehicle acceleration and deceleration sensing, and webbing acceleration sensing.

[0003] To ensure passenger comfort, car seat backrests are angle-adjustable. Ordinary retractors are insufficient; they must possess at least an angle-adjustable function, i.e., an adaptive function. These retractors with automatic adaptation to changes in tilt angle are called adaptive retractors.

[0004] For example, the applicant's earlier patent application CN207389143U disclosed an adaptive seatbelt retractor, which is simple to assemble, small in size, and does not lock up due to changes in tilt angle, exhibiting good adaptive function. However, the applicant discovered in practice that, for example, the aforementioned adaptive seatbelt retractor produces significant noise when the webbing retracts. The reason for this is that during webbing retraction, the free movement of the adaptive vehicle sensing component's sensing ball impacts the sensing arm, sensing seat, and other parts, generating noise that severely affects the driving experience.

[0005] Therefore, how to solve the problem of high noise in adaptive retractors during webbing rewinding has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide an adaptive retractor with reduced noise to solve the problem of high noise during webbing rewinding.

[0007] To achieve the above objectives, the present invention provides an adaptive retractor for reducing noise, comprising:

[0008] support;

[0009] A spindle is inserted into the bracket, and the spindle can rotate along the direction of webbing pull-out and the direction of webbing rewind.

[0010] A geared disc is disposed at one end of the spindle;

[0011] A mandrel sleeve is fixedly connected to the mandrel so that the mandrel sleeve can rotate synchronously with the mandrel.

[0012] An adaptive vehicle-sensing component is disposed on one radial side of the sensing gear, and includes a vehicle-sensing seat, a vehicle-sensing ball, and a vehicle-sensing arm;

[0013] The locking arm has one end frictionally connected to the spindle sleeve so that the locking arm can rotate with the spindle sleeve in the direction of webbing pull-out or webbing rewind, and the other end cooperates with the vehicle sensing seat of the adaptive vehicle sensing component.

[0014] A vehicle-sensing pawl is rotatably disposed on one radial side of the sensing gear disc. The locking end of the vehicle-sensing pawl engages with the outer peripheral teeth of the sensing gear disc, and the vehicle-sensing pawl can abut against the vehicle-sensing arm of the adaptive vehicle-sensing component.

[0015] It also includes a noise reduction block, which is rotatably disposed on the side of the vehicle-sensing pawl opposite to the adaptive vehicle-sensing component;

[0016] The noise reduction block is connected to the locking arm. When the locking arm rotates in the direction of webbing pull-out, it drives the noise reduction block to rotate away from the vehicle sensing pawl, so that the noise reduction block separates from the vehicle sensing pawl. When the locking arm rotates in the direction of webbing rewind, it drives the noise reduction block to rotate closer to the vehicle sensing pawl, so that the noise reduction block abuts against the vehicle sensing pawl and presses the vehicle sensing pawl against the vehicle sensing arm of the adaptive vehicle sensing component.

[0017] Preferably, the vehicle-sensing pawl has a first contact portion, and the noise reduction block has a second contact portion that cooperates with the first contact portion.

[0018] Preferably, the first contact portion is a contact protrusion protruding from the body of the vehicle-feeling ratchet, and the second contact portion is the contact surface of the noise reduction block facing the contact protrusion.

[0019] Preferably, the locking arm is hinged to the noise reduction block.

[0020] Preferably, one of the locking arm and the noise reduction block has a pin, and the other has a pin hole for the pin to be inserted.

[0021] Preferably, it also includes an end cap, which is fixedly connected to the bracket to cover the sensor-equipped toothed disc;

[0022] The locking arm, the noise reduction block, the vehicle-sensing pawl, and the adaptive vehicle-sensing component are installed inside the end cap.

[0023] Preferably, the vehicle-feeling pawl is rotatably mounted on the rotating shaft of the end cap via a shaft hole.

[0024] Preferably, the noise reduction block is rotatably mounted on the shaft hole of the end cap via a rotating shaft.

[0025] The present invention has the following beneficial effects:

[0026] In practical applications, when the spindle rotates along the webbing pull-out direction A, it drives the locking arm to rotate along the webbing pull-out direction A. At this time, the locking arm drives the noise reduction block to rotate away from the vehicle sensing pawl, so that the noise reduction block is separated from the vehicle sensing pawl, without affecting the normal vehicle sensing function of the adaptive vehicle sensing component and the vehicle sensing pawl.

[0027] When the spindle rotates along the webbing rewind direction B, it drives the locking arm to rotate along the webbing rewind direction B. At this time, the locking arm drives the noise reduction block to rotate towards the vehicle sensing pawl, so that the noise reduction block and the vehicle sensing pawl come into contact and finally press the vehicle sensing pawl against the vehicle sensing arm of the adaptive vehicle sensing component, thereby causing the vehicle sensing arm to press against the vehicle sensing ball. In this way, the vehicle sensing ball is restricted, preventing the vehicle sensing ball from moving randomly and hitting surrounding components to generate noise.

[0028] Therefore, the noise-reducing adaptive retractor provided by the present invention does not affect the normal machine feel function of the retractor when the webbing is pulled out, and can limit the machine feel ball to reduce noise when the webbing is rewound. The noise reduction structure is simple and the noise reduction effect is good. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and provide explanations, but do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 An external view of the noise-reducing adaptive take-up unit provided in an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the structure of the noise-reducing adaptive retractor after the end cap is hidden, as provided in an embodiment of the present invention.

[0032] Figure 3 This is a schematic diagram illustrating the engagement of the locking arm, noise reduction block, and vehicle-sensing pawl provided in an embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the structure of the end cap after its cover plate and the vehicle-feel buckle cover are removed, according to an embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the structure of the adaptive vehicle sensing component provided in an embodiment of the present invention;

[0035] Attached icon number

[0036] 1-Staff;

[0037] 2-Webbing;

[0038] 3-Feel-enhancing gear disc;

[0039] 4-Mandrel sleeve;

[0040] 5-Car-sensing component; 51-Car-sensing base; 52-Car-sensing ball; 53-Car-sensing arm;

[0041] 6-Locking arm;

[0042] 7-Car-feel ratchet;

[0043] 8-Noise reduction block;

[0044] 9-End cap; 91-Cover plate. Detailed Implementation

[0045] The core of this invention is to provide an adaptive retractor that reduces noise, in order to solve the problem of high noise during webbing rewinding.

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] like Figure 1 The image shown is an external view of the noise-reducing adaptive take-up unit provided in an embodiment of the present invention. Figure 2 The diagram shown is a structural schematic of the noise-reducing adaptive retractor after the hidden end cap 9 is provided in an embodiment of the present invention. Figure 3 This is a schematic diagram showing the interaction of the locking arm 6, the noise reduction block 8, and the vehicle-feeling pawl 7 provided in an embodiment of the present invention.

[0048] This invention discloses an adaptive retractor for reducing noise, comprising: a bracket 1, a spindle, a geared disc 3, a spindle sleeve 4, an adaptive vehicle-sensing component 5, a locking arm 6, a vehicle-sensing pawl 7, and a noise reduction block 8.

[0049] The mandrel is mounted on the bracket 1 and is used to wind the webbing 2. The mandrel can rotate in the direction of webbing pull-out and the direction of webbing rewind to realize the pulling out and rewinding of the webbing.

[0050] The gear disc 3 is located at one end of the spindle and connected to the spindle.

[0051] The mandrel sleeve 4 is fixed to the mandrel so that the mandrel sleeve 4 can rotate synchronously with the mandrel.

[0052] The adaptive vehicle-sensing component 5 is positioned on the radial side of the belt-driven gear 3. For example... Figure 5 As shown, the adaptive vehicle sensing component 5 includes a vehicle sensing base 51, a vehicle sensing ball 52, and a vehicle sensing arm 53, wherein the vehicle sensing base 51 is rotatably mounted on the vehicle sensing base and end cap of the retractor to achieve the adaptive function.

[0053] One end of the locking arm 6 is frictionally connected to the spindle sleeve 4, allowing the locking arm 6 to rotate with the spindle sleeve 4. The other end of the locking arm 6 engages with the sector teeth of the motion sensor seat 51 of the adaptive motion sensor assembly 5. The pulling and winding action of the webbing controls the locking arm 6 to rotate within a specified range along the webbing pulling direction and along the webbing winding direction, thereby realizing the engagement and disengagement of the locking arm 6's pointed teeth with the sector teeth of the motion sensor seat 53. When disengaged, the motion sensor seat 53 can rotate freely, achieving self-adaptation; when engaged, the motion sensor seat 53 is relatively fixed, achieving normal locking function.

[0054] The vehicle-sensing pawl 7 is rotatably mounted on one radial side of the sensing gear 3. The locking end of the vehicle-sensing pawl 7 engages with the outer peripheral teeth of the sensing gear 3. When the adaptive vehicle-sensing component 5 is activated, the vehicle-sensing ball 52 moves to lift the vehicle-sensing arm 53, which in turn lifts the vehicle-sensing pawl 7 until it engages with the outer peripheral teeth of the sensing gear 3, thus locking the sensing gear 3 and preventing it from rotating, thereby achieving the locking function. Furthermore, the vehicle-sensing pawl 7 can abut against the vehicle-sensing arm 53 of the adaptive vehicle-sensing component 5.

[0055] The noise reduction block 8 is rotatably disposed on the side of the vehicle sensing pawl 7 facing away from the adaptive vehicle sensing component 5. The noise reduction block 8 is throttle-connected to the locking arm 6. When the locking arm 6 rotates in the direction of webbing pull-out, it causes the noise reduction block 8 to rotate away from the vehicle sensing pawl 7, so that the noise reduction block 8 separates from the vehicle sensing pawl 7. When the locking arm 6 rotates in the direction of webbing rewind, it causes the noise reduction block 8 to rotate towards the vehicle sensing pawl 7, so that the noise reduction block 8 abuts against the vehicle sensing pawl 7 and presses the vehicle sensing pawl 7 against the vehicle sensing arm 53 of the adaptive vehicle sensing component 5.

[0056] like Figure 3 As shown, this noise-reducing adaptive retractor, in practical applications, when the mandrel rotates along the webbing pull-out direction A, drives the locking arm 6 to rotate along the webbing pull-out direction A, which corresponds to... Figure 3 In the counter-clockwise direction, the locking arm 6 drives the noise reduction block 8 to rotate away from the vehicle-feeling pawl 7, that is, the locking arm 6 drives the noise reduction block 8 along... Figure 3 Rotate counterclockwise to separate the noise reduction block 8 from the vehicle sensing pawl 7, without affecting the normal vehicle sensing function of the adaptive vehicle sensing component 5 and the vehicle sensing pawl 7.

[0057] When the spindle rotates along the webbing rewind direction B, it drives the locking arm 6 to rotate along the webbing rewind direction B, which corresponds to... Figure 3 In the clockwise direction, the locking arm 6 drives the noise reduction block 8 to rotate towards the vehicle-feeling pawl 7, that is, the locking arm 6 drives the noise reduction block 8 along... Figure 3The noise reduction block 8 is rotated clockwise so that it comes into contact with the vehicle sensing pawl 7 and eventually presses the vehicle sensing pawl 7 against the vehicle sensing arm 53 of the adaptive vehicle sensing component 5. This causes the vehicle sensing arm 53 to press against the vehicle sensing ball 52, thereby limiting the vehicle sensing ball 52 and preventing it from moving randomly and hitting surrounding components to generate noise.

[0058] Therefore, the noise-reducing adaptive retractor provided in this embodiment of the invention does not affect the normal machine feel function of the retractor when the webbing is pulled out, and can limit the machine feel ball 52 to reduce noise when the webbing is rewound. The noise reduction structure is simple and the noise reduction effect is good.

[0059] It should be noted that the adaptive vehicle sensing component of a traditional adaptive retractor, in addition to the vehicle sensing seat, vehicle sensing ball, and vehicle sensing arm, usually includes a counterweight. The counterweight is located below the vehicle sensing seat to ensure that the vehicle sensing seat remains perpendicular to the ground under the influence of gravity. However, the noise-reducing adaptive retractor provided by this invention, due to the inclusion of a noise-reducing block 8 pressing against the adaptive vehicle sensing component, can ensure that the vehicle sensing seat remains perpendicular to the ground in some situations. Therefore, in some embodiments, the noise-reducing adaptive retractor provided by this invention can eliminate the counterweight, thereby reducing the overall weight of the adaptive vehicle sensing component. When the webbing is in the rewinding state, the locking arm 6 and the fan-shaped teeth on the vehicle sensing seat 51 separate. At this time, if the vehicle accelerates or decelerates, the adaptive vehicle sensing component 5 will shake and impact the vehicle sensing cover, generating noise. The greater the weight of the adaptive vehicle sensing component, the greater the impact noise. Because the counterweight is eliminated, the overall weight of the adaptive vehicle sensing component is reduced, resulting in lower impact noise.

[0060] Therefore, the noise-reducing adaptive vehicle retractor provided in this embodiment of the invention, when the webbing is in the rewinding state, on the one hand, restricts the movement of the vehicle sensing ball 52 by the noise reduction block 8, thereby reducing the noise generated by the vehicle sensing ball 52 hitting the surrounding parts; on the other hand, the noise reduction block 8 replaces the function of the counterweight block of the traditional adaptive vehicle sensing component in some cases, thereby reducing the overall weight of the adaptive vehicle sensing component and also reducing the noise of the adaptive vehicle sensing component shaking and hitting the vehicle sensing cover when the vehicle accelerates or decelerates.

[0061] like Figure 3 As shown, the vehicle-feeding pawl 7 has a first contact portion 71, and the noise reduction block 8 has a second contact portion 81 that cooperates with the first contact portion 71. When the locking arm 6 drives the noise reduction block 8 along... Figure 3 When rotated counterclockwise, the second contact part 81 separates from the first contact part 71; when the locking arm 6 drives the noise reduction block 8 along... Figure 3 When rotated clockwise, the second contact part 81 engages with the first contact part 71, thereby pressing the vehicle sensing pawl 7 against the vehicle sensing arm 53 of the adaptive vehicle sensing component 5.

[0062] Advantageously, the first contact portion 71 is a contact protrusion protruding from the body of the vehicle-sensing ratchet pawl, and the second contact portion 81 is the contact surface of the noise-reducing block 8 facing the contact protrusion 71. This facilitates the engagement and disengagement of the noise-reducing block 8 and the vehicle-sensing ratchet pawl 7, resulting in good stability.

[0063] In some specific embodiments, to facilitate the transmission connection between the locking arm 6 and the noise reduction block 8, the locking arm 6 and the noise reduction block 8 can be hinged. In this way, the locking arm 6 can stably drive the noise reduction block 8 to rotate synchronously. When the locking arm 6 moves along... Figure 3 When the middle rotates counterclockwise, it drives the noise reduction block 8 to rotate counterclockwise simultaneously. When the locking arm 6 rotates counterclockwise... Figure 3 When rotated clockwise, the noise reduction block 8 is also rotated clockwise.

[0064] In some specific embodiments, one of the locking arm 6 and the noise reduction block 8 has a pin, and the other has a pin hole for the pin to be inserted, thereby realizing the hinged connection between the two, which is simple in structure and easy to manufacture.

[0065] like Figure 4 The diagram shown is a structural schematic of the end cover 9 provided in an embodiment of the present invention after its cover plate 91 and the vehicle-mounted latch are removed. To show the various components inside the end cover 9, the cover plate 91 of the end cover 9 (see...) Figure 1 It was removed.

[0066] See Figure 1 , Figure 4 To facilitate the installation of various components, the noise-reducing adaptive retractor described above in this embodiment also includes an end cap 9. The end cap 9 is fixedly connected to the bracket 1 to cover the geared disc 3. The end cap 9 can serve as the mounting base for various components, such as... Figure 4 As shown, the locking arm 6, noise reduction block 8, vehicle-sensing pawl 7, and adaptive vehicle-sensing component 7 can be installed inside the end cover 9.

[0067] Advantageously, for ease of assembly, the car-feeding pawl 9 can be rotatably mounted on the rotating shaft of the end cover 9 via a shaft hole. The shaft hole of the car-feeding pawl 7 and the rotating shaft of the end cover 9 can define the axis of rotation of the car-feeding pawl 7.

[0068] For ease of assembly, the noise reduction block 8 is rotatably mounted on the shaft hole of the end cover 9 via a rotating shaft. The rotating shaft of the noise reduction block 8 and the shaft hole of the end cover 9 define the rotation axis of the noise reduction block 8.

[0069] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0070] It should be understood that the use of terms such as "system," "device," "unit," and / or "module" in this application is merely one method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0071] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0072] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0073] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0074] If a flowchart is used in this application, it is used to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0075] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A self-adaptive retractor with noise reduction, comprising: a bracket; a spindle disposed in the bracket, the spindle being rotatable in a tape pulling direction and a tape winding direction; a belt sensing disc disposed at one end of the spindle; a spindle sleeve fixedly connected with the spindle so that the spindle sleeve can rotate synchronously with the spindle; a self-adaptive vehicle sensing assembly disposed at a radial side of the belt sensing disc, the self-adaptive vehicle sensing assembly comprising a vehicle sensing seat, a vehicle sensing ball and a vehicle sensing arm; a locking arm, one end of which is frictionally connected with the spindle sleeve so that the locking arm can rotate with the spindle sleeve in the tape pulling direction or the tape winding direction, and the other end of which is matched with the vehicle sensing seat of the self-adaptive vehicle sensing assembly; a vehicle sensing pawl rotatably disposed at a radial side of the belt sensing disc, a locking end of the vehicle sensing pawl being matched with a peripheral tooth of the belt sensing disc, and the vehicle sensing pawl being abuttable with the vehicle sensing arm of the self-adaptive vehicle sensing assembly; characterized in that a noise reduction block is further included, the noise reduction block being rotatably disposed at a side of the vehicle sensing pawl away from the self-adaptive vehicle sensing assembly; wherein the noise reduction block is in transmission connection with the locking arm, when the locking arm rotates in the tape pulling direction, the noise reduction block is driven to rotate away from the vehicle sensing pawl so that the noise reduction block is separated from the vehicle sensing pawl, and when the locking arm rotates in the tape winding direction, the noise reduction block is driven to rotate towards the vehicle sensing pawl so that the noise reduction block abuts against the vehicle sensing pawl and presses the vehicle sensing pawl against the vehicle sensing arm of the self-adaptive vehicle sensing assembly.

2. The noise reducing self-adapting retractor of claim 1, wherein, The vehicle sensing pawl is provided with a first abutting part, and the noise reduction block is provided with a second abutting part matched with the first abutting part.

3. The noise reducing self-adapting retractor of claim 2, wherein, The first abutting part is an abutting protrusion protruding from the vehicle sensing pawl body, and the second abutting part is an abutting surface of the noise reduction block facing the abutting protrusion.

4. The noise reducing self-adapting retractor of claim 1, wherein, The locking arm is hingedly connected with the noise reduction block.

5. The noise reducing self-adapting retractor of claim 4, wherein, One of the locking arm and the noise reduction block has a pin shaft, and the other has a pin hole for the pin shaft to be inserted.

6. The noise reducing self-adapting retractor of claim 1, wherein, An end cover is further included, the end cover being fixedly connected with the bracket to cover the belt sensing disc; the locking arm, the noise reduction block, the vehicle sensing pawl and the self-adaptive vehicle sensing assembly are installed in the end cover.

7. The noise reducing self-adapting retractor of claim 6, wherein, The vehicle sensing pawl is rotatably installed on a rotating shaft of the end cover through a shaft hole.

8. The noise reducing self-adapting retractor of claim 6, wherein, The noise reduction block is rotatably installed on the shaft hole of the end cover through a rotating shaft.

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