KR102698617B1 - Shock absorption apparatus for safety belt - Google Patents

Abstract

The present invention relates to a shock absorbing device for a seat belt, which secures the function of a retractor when an impact occurs on a moving body, and at the same time provides elasticity corresponding to the physical condition of the wearer to the webbing to which the seat belt is connected, thereby absorbing secondary impact that may be applied to the chest and shoulders by the webbing, thereby preventing injury to the wearer of the seat belt.
The shock absorbing device for a seat belt according to the present invention comprises a tongue (80) connected to a retractor by a webbing (82) and a buckle (70) fastened to the tongue (80), and a shock absorbing device for a seat belt for absorbing shock applied to the webbing, comprising a plate-shaped elastic bracket (44) having a tongue (60) fastened to the buckle (70) fastened to the other side thereof, and a buckle bracket (20) having a buckle (10) fastened to the tongue (80) fastened to one side thereof in a plate shape corresponding to the elastic bracket (44), and the elastic bracket (44) comprises a hollow spring holder (42) mounted on both ends thereof, an elastic spring (54) accommodated in the spring holder (42) to provide elastic force to the buckle bracket (20), and a spring (54) formed by the elastic spring (54). It can be configured to include an elasticity adjustment means for maintaining the arrangement with the buckle bracket (20) while transmitting elasticity to the buckle bracket (20) and adjusting the elasticity of the elastic spring (54).

Description

{SHOCK ABSORPTION APPARATUS FOR SAFETY BELT}

The present invention relates to a shock absorber for a seat belt, and more specifically, to a shock absorber for a seat belt which secures the function of a retractor when an impact occurs on a moving object, and at the same time provides elasticity corresponding to the physical condition of the wearer to the webbing to which the seat belt is connected, thereby absorbing secondary impact that may be applied to the chest and shoulders by the webbing, thereby preventing injury to the seat belt wearer.

Vehicles carrying people are equipped with seat belts to prevent injuries to drivers and passengers from various external impacts such as collision accidents.

In particular, in the case of automobiles, it independently plays a role in protecting the driver and passengers depending on the size of the impact in the event of a collision, but it also plays a secondary role in protecting the driver and passengers more safely when linked with the airbag device.

Referring to FIGS. 6 and 7, the schematic configuration of a conventional seat belt device comprises a buckle (10) fixed to one side of a floor panel with a cable (74), a retractor on which webbing (82) fixed to the lower part of a center pillar is wound, a tongue (80) provided to be fastened to the buckle (10) on the webbing unwound from the retractor to a predetermined length, a guide that prevents the webbing from being unwound or twisted, and an anchor that can adjust the height of the belt.

The above retractor is normally fixed to the center pillar so that the tongue provided at the end of the webbing can be selectively fastened and released from the buckle to withdraw the webbing, and is installed built into the floor panel so that it is fixed in the event of a collision.

In addition, the safety belt is designed to prevent the wearer's body from being thrown forward or in the direction of the accident in the event of a collision by fixing both ends of a webbing having a certain width to the center pillar of the floor panel and positioning the wearer between them, as shown in Fig. 6.

However, the seat belt according to the above conventional technology prevents the driver and passengers from being thrown forward and hitting the steering wheel or dashboard of the car in the event of a car accident by pressing their bodies against the seat, but there is a problem in that, since the tension of the webbing is not adjusted, a considerable secondary impact is applied to the wearer's chest and shoulders supported by the webbing, resulting in injuries to the ribs or collarbone.

Accordingly, Korean Patent No. 10-1288816 (registration date, July 17, 2013) comprises: a body having one side closed and an interior filled with a dilatant fluid; a friction member immersed in the dilatant fluid through an opening of the body and controlled to move by the dilatant fluid when stress is generated in the dilatant fluid by contact with the dilatant fluid; an elastic member installed between the inside of the body and the friction member to elastically limit the position of the friction member; And a packing that blocks the leakage of the expansion fluid; wherein one side of the body is connected and fixed to one of a buckle and a bracket of a seat belt, the friction member is connected to one of the bracket, the webbing of the seat belt, and an intermediary means connected to the bracket or the webbing of the seat belt by penetrating an opposite surface to the one side of the body, the packing is provided on an opposite surface to the one side of the closed body, a slit is formed, and the friction member is made of an elastic material so as to enable linear movement through the slit, and the friction member moves in the expansion fluid according to the generation, change, and release of stress applied to the seat belt to adjust the tension applied to the seat belt.

However, the conventional load adjusting device for seat belts as described above can relieve physical pressure caused by seat belt webbing, but has a problem in that it is inconvenient to use because it cannot adjust the load applied to the webbing to correspond to the physical condition of the wearer.

In particular, the conventional load adjusting device for seat belts, such as the above, has a problem in that its operation is unreliable because it cannot absorb shock when the friction members are located at both ends of the body.

Meanwhile, the conventional seat belt load adjusting device as described above has the problem of increased cost because it must be installed by modifying the seat belt device of a new car that is released as a finished vehicle, and there is the problem that it may limit the after-sales service of the finished vehicle manufacturer because it entails modification of the finished vehicle.

In particular, there is a problem that buyers of complete vehicles tend to be highly averse to modifications that may affect the interior of the vehicle, and there is a problem that they are reluctant to install conventional seat belt load adjusting devices even though they can function as an alternative to secondary impacts.

The present invention is intended to solve the above-described problems, and has the purpose of providing a shock absorbing device for a seat belt that can prevent injury to a seat belt wearer by absorbing secondary impact that may be applied to the seat belt wearer without making any modification to the automobile being produced.

In addition, the present invention aims to provide a shock absorbing device for a seat belt capable of alleviating secondary impact caused by webbing by adjusting elasticity corresponding to the physical condition of the wearer.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned can be more clearly understood from the following description explaining preferred embodiments.

In order to achieve the above object, the shock absorbing device for a seat belt according to the present invention comprises a tongue (80) connected to a retractor by a webbing (82) and a buckle (70) fastened to the tongue (80), a shock absorbing device for a seat belt for absorbing shock applied to the webbing, comprising a plate-shaped elastic bracket (44) having a tongue (60) fastened to the buckle (70) fastened to the other side thereof, and a buckle bracket (20) having a buckle (10) fastened to the tongue (80) fastened to one side thereof in a plate shape corresponding to the elastic bracket (44), and the elastic bracket (44) comprises a hollow spring holder (42) mounted on both ends thereof, an elastic spring (54) accommodated in the spring holder (42) for providing elastic force to the buckle bracket (20), and the It can be configured to include an elasticity adjustment means for transmitting the elastic force of the elastic spring (54) to the buckle bracket (20) while maintaining the arrangement with the buckle bracket (20) and adjusting the elasticity of the elastic spring (54).

For example, the buckle bracket (20) and the elastic bracket (44) may have bracket holes (22, 48) formed through both ends, and the elasticity adjustment means may include an elasticity adjustment bolt (50) and an elasticity adjustment nut (58) that penetrate the elastic spring (54) and have a screw portion that penetrates the bracket holes (22, 48) to transmit the elastic force of the elastic spring (54) to the buckle bracket (20).

For example, the invention may further include a front release portion (32) formed in a plate shape having a predetermined width on one side to press the release button (12) of the buckle portion (10), a rear release portion (34) formed on the other side to press the release button of the buckle (70) fastened to the tongue (60) of the elastic bracket (44), and a double release button (30) having a sliding hole (36) formed in the center in the longitudinal direction, and the double release button (30) may be configured to include a mounting bolt (38) inserted through the sliding hole (36) so as to be mounted and slidable on the buckle portion (10).

For example, when the double release button (30) is operated to release the buckle (70) of the vehicle after the tongue (60) of the elastic bracket (44) is fastened to it, the device may further include a plate spring mounted on the elastic bracket (44) at a position opposite to the release button of the buckle (70) of the vehicle.

As an example, the double release button (30) may be configured to be formed to a length such that the release button (12) of the buckle part (10) is operated first and then the release button of the buckle (70) of the vehicle is operated later, or the release button of the buckle (70) of the vehicle is operated first and then the release button (12) of the buckle part (10) is operated later.

As described above, according to the present invention, since the elasticity can be adjusted to fit the physical condition of the wearer, the product can be installed, thereby improving convenience and preference and encouraging the wearing of seat belts.

Meanwhile, it has the effect of preventing injuries to seat belt wearers by securing the function of a retractor without making any modifications to the finished vehicle being shipped, and at the same time absorbing secondary impacts that may be applied to the wearer.

In addition, the present invention has the effect of improving the seat belt wearing rate because it can produce a product with a relatively simple structure and low manufacturing cost.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

Figure 1 is a shock absorbing device for a seat belt according to the present invention.
Figure 2 is an exploded perspective view of a shock absorbing device for a seat belt according to the present invention.
Figure 3 is a cross-sectional view of the cut section along line AA of Figure 1.
Figure 4 is a diagram showing the usage status of a shock absorbing device for a seat belt according to the present invention.
Figure 5 is a cross-sectional view of the cut section of line BB of Figure 4.
Fig. 6 is a seat for an automobile equipped with a conventional automobile seat belt.
Fig. 7 shows a conventional seat belt for an automobile.

Hereinafter, a shock absorbing device for a seat belt according to the present invention will be described in detail with reference to the attached drawings. Various embodiments of the present invention will be described below, but it should be understood that the technical idea of the present invention is not limited thereto and may be modified and implemented in various ways by those skilled in the art. In addition, the terms used in this specification have been used to describe the concept of the present invention and embodiments thereof, and are not intended to limit the present invention to the dictionary or phraseological meaning of the terms. For example, a singular expression in this specification may include a plural expression unless the context clearly indicates otherwise. In addition, in this specification, terms such as "include" or "have" mean the presence of a certain configuration, step, operation, or a combination thereof, and do not exclude the possibility of the presence or addition of other configurations, steps, or operations unless the context clearly indicates otherwise.

Unless stated otherwise herein, “connected” or “coupled” may include one element/feature being directly connected or coupled to another element/feature, or indirectly connected or coupled via another element/feature, and does not necessarily mean directly mechanically connected or coupled. Thus, while the various schematic diagrams depicted in the drawings illustrate exemplary arrangements of elements and components, additional intervening elements, devices, features or components may be present in an actual embodiment (assuming the functionality of the depicted elements is not adversely affected).

Meanwhile, when adding quotation marks to components of the drawings, identical components are given the same symbols as much as possible even if they are shown on different drawings, and detailed descriptions of well-known functions and configurations that may unnecessarily obscure the gist of the present invention are omitted. In addition, directional terms such as 'upper', 'lower', 'front', 'rear', 'leading', 'front', 'rear', etc. are used in relation to the orientation of the disclosed drawing(s). Since components of the embodiments of the present invention can be positioned in various orientations, directional terms are used for the purpose of illustration and not limitation.

The present invention is a device that secures the function of a retractor when an impact occurs on a moving body and at the same time provides elasticity corresponding to the physical condition of a wearer to a webbing to which a seat belt is connected, thereby alleviating secondary impact that may be applied to the chest and shoulders by the webbing.

The present invention can be applied to all moving objects equipped with a seat belt to protect the wearer, but the following description will describe an example in which it is applied to a seat belt of an automobile.

FIG. 1 is a shock absorbing device for a seat belt according to the present invention, FIG. 2 is an exploded perspective view of the shock absorbing device for a seat belt according to the present invention, and FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1.

A shock absorbing device for a seat belt according to one embodiment of the present invention may be configured to include a buckle portion (10), a buckle bracket (20), an elastic providing portion (40), and a tongue portion (60), as shown in FIGS. 1 to 3.

As an example, the buckle bracket (20) is formed in a plate shape with the buckle (10) attached to one side. In addition, the buckle bracket (20) is formed with bracket holes (22) penetrating through both ends.

The above buckle part (10) is configured with a release button (12) and a tongue insertion hole (14) on one side, and the other side is configured to be joined to the buckle part bracket (20), and an ejector, a lock plate, a button hook, etc. are configured on the inside (see FIGS. 3 and 5). However, since this is a known configuration, a detailed description is omitted.

The above elasticity providing unit (40) is configured by having an elasticity bracket (44) formed in a plate shape to correspond to the buckle bracket (20), a spring holder (42) for providing elasticity to the buckle bracket (20) is mounted on both ends of the elasticity bracket (44), and a tongue (60) is joined to protrude in the center.

The above elastic bracket (44) is formed with a bracket hole (48) that communicates with the bracket hole (22) formed in the above buckle bracket (20).

The above spring holder (42) is configured to include an elastic spring (54) accommodated on the inside to provide elasticity, an elastic adjustment bolt (50) that penetrates the elastic spring (54) and the bracket hole (22, 48) to expose the screw portion and is coupled, and an elastic adjustment nut (58) that is coupled to the elastic adjustment bolt (50) on the outside of the buckle bracket (20).

As an example, it is preferable that the elastic spring (54) and the elastic adjustment bolt (50) are configured so that the elastic adjustment bolt (50) does not come off to the outside of the spring holder (42) through a separation prevention washer (52).

Meanwhile, it is preferable that the elastic adjustment bolt (50) be double-fastened with an elastic fixing nut (56) and the elastic adjustment nut (58).

The shock absorbing device for a seat belt according to the present invention configured as described above is arranged in a form in which the buckle bracket (20) and the elastic bracket (44) are in contact with each other as shown in FIGS. 1 to 3, and this arrangement state is maintained by fastening the elastic adjustment bolt (50) and the elastic adjustment nut (58).

In addition, the buckle bracket (20) and the elastic bracket (44) can maintain the arrangement state by the elastic adjustment bolt (50) and the elastic adjustment nut (58), and the bonding force of the buckle bracket (20) and the elastic bracket (44) is adjusted by the elastic force of the elastic spring (54).

Accordingly, the elastic force provided from the elastic spring (54) can be adjusted by adjusting the elastic adjustment nut (58) to correspond to the wearer's physical condition. That is, by adjusting the threshold of external force that can cause the buckle bracket (20) and the elastic bracket (44) to separate when an impact accident occurs, the function of the retractor of an already installed automobile can be secured without causing any problems.

Meanwhile, the shock absorbing device for a seat belt according to the present invention may further include a double release button (30) mounted on the buckle portion (10).

The above double release button (30) is formed in the shape of a plate having a certain width, and has a front release portion (32) bent on one side to press the release button (12) of the buckle portion (10), and a rear release portion (34) formed on the other side to press the release button of the buckle (70) fastened to the tongue portion (60) formed in the elastic providing portion (40), and a sliding hole (36) is formed in the central portion in the longitudinal direction. In addition, a mounting bolt (38) is inserted and fastened in the sliding hole (36) so that the double release button (30) can be mounted and slid on the buckle portion (10).

Accordingly, the double release button (30) can release the release button of the buckle part (10) and the release button of the car buckle (70) fastened to the tongue part (60) simultaneously or sequentially. That is, by adjusting the length of the double release button (30), the release button (12) of the buckle part (10) can be operated first and then the release button of the car buckle (70) can be operated later, or the release button of the car buckle (70) can be operated first and then the release button (12) of the buckle part (10) can be operated later.

As an example, a rubber spring not shown in the drawing may be further configured on the other side of the elastic bracket (44).

It is preferable that the above-mentioned plate spring be mounted at a position opposite to the release button of the buckle (70) of the vehicle when the tongue (60) of the elastic bracket (44) is fastened to the buckle (70) of the vehicle.

Therefore, when the double release button (30) is operated to release the buckle (70) of the vehicle from the tongue (60) of the elastic bracket (44), the elastic force of the plate spring is provided to the buckle (70) of the vehicle so that a smoother release can be achieved.

Fig. 4 is a diagram showing the usage status of a shock absorbing device for a seat belt according to the present invention, and Fig. 5 is a cross-sectional view taken along line B-B of Fig. 4.

The operation of a shock absorbing device for a seat belt according to one embodiment of the present invention will be described with reference to FIGS. 1 to 5.

The present invention is fastened to a buckle (70) of a vehicle as shown in the above-described Figures 4 and 5. That is, it is coupled by fastening the tongue (60) formed in the elastic bracket (44) to the buckle (70) of the vehicle.

Here, the buckle (70) of the above-mentioned vehicle is fixed to the seat floor panel of the vehicle through a wire fixing ring (74).

In addition, the buckle (70) of the above-mentioned vehicle is fastened with a tongue (80) that is stretched over a webbing (82) wound on a retractor mounted on the inside of the center pillar.

The above webbing (82) is a fiber portion that wraps around the body as shown in Fig. 6, and is commonly called a belt, and is made of synthetic fibers such as nylon or polyester. When the seat belt is a three-point type, this webbing supports the wearer's shoulders and chest, stably restraining the body, thereby protecting the wearer's body.

The above retractor serves to pull and fix the webbing, and provides a length of webbing that fits the wearer's body shape. At the same time, when stress is applied to the webbing due to sudden braking or impact of the vehicle, it detects this and limits the loosening of the webbing.

As described above, the present invention is used by fastening a tongue (60) formed on an elastic bracket (44) to a buckle (70) of an automobile.

Here, the above buckle bracket (20) and the elastic bracket (44) are fastened by the elastic adjustment bolt (50) and the elastic adjustment nut (58) so as to maintain a constant arrangement state by the elastic force of the elastic spring (54). This arrangement state of the buckle bracket (20) and the elastic bracket (44) is maintained until a certain amount of external force is applied to the buckle bracket (20), and the buckle bracket (20) and the elastic bracket (44) are separated only when an external force exceeding the elastic force provided by the elastic spring (54) is applied.

The person wearing the seat belt fastens the car's tongue (80) to the buckle (10) in the same way as before.

Here, the elastic bracket (44) and the buckle bracket (20) are maintained in a position by fastening the elastic adjustment bolt (50) and the elastic adjustment nut (58) as described above.

Therefore, in the event of an impact accident in a car, the wearer's body is prevented from being thrown forward or in the direction of the accident by the car's retractor. In other words, the function of the retractor that is already installed is secured.

Meanwhile, when the above impact accident occurs, if an external force exceeding the threshold of elastic force provided by the elastic spring (54) acts on the webbing, the buckle bracket (20) and the elastic bracket (44) separate from each other and absorb the external force exceeding the threshold.

Accordingly, the present invention prevents injuries that may occur to the wearer by absorbing shock to the chest or shoulder area of the wearer as the buckle bracket (20) separates from the elastic bracket (44).

Meanwhile, the elastic force for separating the buckle bracket (20) and the elastic bracket (44) can be appropriately adjusted according to the wearer's physical condition by tightening or loosening the elastic adjustment nut (58) in the elastic adjustment bolt (50).

The shock absorber for a seat belt according to the present invention can be released by pressing the release button of the buckle part (10) to detach the tongue (80) of the vehicle, and by pressing the release button of the buckle (70) of the vehicle to detach the shock absorber for a seat belt according to the present invention. Here, the release button of the buckle part (10) and the release button of the buckle (70) of the vehicle may be operated regardless of the order.

Meanwhile, in the case where the shock absorbing device for a seat belt according to the present invention further includes the double release button (30), when the shock absorbing device for a seat belt according to the present invention is fastened to the buckle (70) of a vehicle as shown in FIGS. 4 and 5, the front release portion (32) formed on one side of the double release button (30) is positioned adjacent to the release button (12) of the buckle portion (10), and the rear release portion (34) formed on the other side is positioned adjacent to the release button of the buckle (70) of the vehicle.

Accordingly, when the above double release button (30) is slid and pressed through the mounting bolt (38) and sliding hole (36) attached to the buckle part (10), the tongue (80) of the car attached to the buckle part (10) and the buckle (70) of the car attached to the tongue part (60) of the elastic bracket (44) are simultaneously released.

As described above, the wearer can easily and conveniently install and use the shock absorbing device for a seat belt according to the present invention on the buckle (70) of the vehicle without making any modifications to the existing vehicle.

The embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical idea of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those with ordinary knowledge in the technical field of the present invention can improve and change the technical idea of the present invention in various forms. Accordingly, such improvements and changes will fall within the protection scope of the present invention if they are obvious to those with ordinary knowledge.

10: Buckle 12: Release button
14: Tongue insert 20: Buckle bracket
22, 48: Bracket hole 30: Double release button
32: Front release part 34: Rear release part
36: Sliding hole 38: Mounting bolt
40: Elasticity providing part 42: Spring holder
44: Elastic bracket 50: Elastic adjustment bolt
52: Anti-separation washer 54: Elastic spring
56: Elastic fixing nut 58: Elastic adjusting nut
60: hollow 70: buckle
80: Tongue 82: Webbing

Claims (5)

In a seat belt device including a tongue (80) connected to a retractor by a webbing (82) and a buckle (70) fastened to the tongue (80), a shock absorbing device for a seat belt for absorbing shock applied to the webbing,
A plate-shaped elastic bracket (44) having a tongue (60) attached to the other side to be fastened with the above buckle (70),
It includes a buckle bracket (20) having a buckle portion (10) joined to one side to be fastened with the tongue (80) in a plate shape corresponding to the elastic bracket (44).
The elastic bracket (44) is a shock absorbing device for a seat belt, comprising: a hollow spring holder (42) mounted on both ends; an elastic spring (54) accommodated in the spring holder (42) to provide elasticity to the buckle bracket (20); and an elasticity adjusting means for transmitting the elasticity of the elastic spring (54) to the buckle bracket (20) while maintaining the arrangement with the buckle bracket (20) and adjusting the elasticity of the elastic spring (54).
In claim 1,
The above buckle bracket (20) and the above elastic bracket (44) have bracket holes (22, 48) formed through both ends,
The above elasticity adjustment means is a shock absorbing device for a seat belt, which includes an elasticity adjustment bolt (50) and an elasticity adjustment nut (58) that penetrate the elastic spring (54) and have a screw portion that penetrates the bracket hole (22, 48) to transmit the elastic force of the elastic spring (54) to the buckle bracket (20).
In claim 1 or claim 2,
It further includes a front release part (32) that is bent on one side to be able to press the release button (12) of the buckle part (10) in the form of a plate having a certain width, a rear release part (34) that is formed on the other side to be able to press the release button of the buckle (70) that is fastened to the tongue part (60) of the elastic part bracket (44), and a double release button (30) that has a sliding hole (36) formed in the central part in the longitudinal direction.
The above double release button (30) is a shock absorbing device for a seat belt, which includes a mounting bolt (38) that is inserted so as to be mounted and slidable in the buckle portion (10) through the sliding hole (36).
In claim 3,
A shock absorbing device for a seat belt, further comprising a plate spring mounted on the elastic bracket (44) at a position opposite to the release button of the buckle (70) of the vehicle when the double release button (30) is operated to release the buckle (70) of the elastic bracket (44) after the tongue (60) of the elastic bracket (44) is fastened to the buckle (70) of the vehicle.
In claim 3,
The above double release button (30) is a shock absorbing device for a seat belt, which is formed to a length such that the release button (12) of the buckle part (10) is operated first and then the release button of the buckle (70) of the vehicle is operated later, or the release button of the buckle (70) of the vehicle is operated first and then the release button (12) of the buckle part (10) is operated later.