CN112977202A - Passenger active safety protection device, child safety seat, vehicle seat and vehicle - Google Patents

Abstract

The present disclosure relates to an occupant active safety device, a child safety seat, a vehicle seat and a vehicle. The occupant active safety device includes: the safety seat headrest and the protective cover body are movably arranged on the safety seat headrest and have a highest position, a normal position and a blocking position in the motion track; a gap exists between the protective cover body at the highest position and the head of the passenger in a normal sitting posture in the vertical direction, so that the passenger can conveniently sit in the gap; the protective cover body moves to the normal position after sitting, and the protective cover body can timely move to the blocking position from the normal position to perform safety protection when emergency braking or forward collision occurs, so that the safety protection performance of passengers is improved.

Description

Passenger active safety protection device, child safety seat, vehicle seat and vehicle

Technical Field

The disclosure relates to the field of passenger safety protection, in particular to a passenger active safety protection device, a child safety seat, a vehicle seat and a vehicle.

Background

When a passenger takes a vehicle and has sudden braking, a forward collision or a backward collision, the body of the passenger wearing the safety belt is restrained by the safety belt to realize small movement displacement, and the head of the passenger is greatly inclined forwards or backwards relative to the body due to lack of proper restraint, so that the neck injury is easily caused, and the safety threat is particularly serious for an infant with a fragile neck.

In some related arts, there are a case where the body of the occupant is restrained by a seat belt and the head and neck of the occupant is fixed by a fixed type protection device to restrain the movement of the head and neck, and there is a case where a headband or a helmet is worn on the occupant and a cord is provided between the back side of the headband or the helmet and a seat to restrain the forward movement of the head in sudden braking or forward collision, but it is easy to cause discomfort in wearing comfort or free movement of the head and neck of the occupant, resulting in a lack of willingness of the occupant to wear the protection device. In other related technologies known by the inventor, the protective cover body is connected to the seat in a rotating mode, when the vehicle brakes suddenly or collides forwards, the protective cover body rotates forwards rapidly from a normal position to a blocking position limiting the inertial swing range of the head of the passenger under the action of inertia, active safety protection for the head and neck of the passenger is achieved, limitation on movement of the head and neck of the passenger is reduced, and comfort of the passenger is improved.

Disclosure of Invention

The inventor researches and discovers that the front edge of the protective cover body in the related art can cause the passengers to be inconvenient to sit down under the normal position, if the normal position is wholly heightened, the passengers can sit down conveniently, but the passengers can be far away from the normal position to the blocking position, and when the passengers suddenly brake or collide forwards, the risk that the protective cover body cannot timely rotate to the blocking position from the normal position to perform safety protection exists.

In view of this, the embodiment of the present disclosure provides a passenger active safety protection device, a child safety seat, a vehicle seat and a vehicle, which can not only facilitate seating of a passenger, but also ensure that a protective cover body moves to a blocking position in time to perform safety protection when emergency braking or forward collision occurs.

In one aspect of the present disclosure, an occupant active safety device for actively protecting an occupant in a vehicle is provided, including:

a safety seat headrest for mounting on a vehicle; and

the protective cover body is movably arranged on the headrest of the safety seat, and has a highest position, a normal position and a blocking position in the motion track, and a gap exists between the protective cover body at the highest position and the head of the passenger in a normal sitting posture in the vertical direction; a gap is formed between the protective cover body in the normal position and the head of the passenger in the normal sitting posture, and part of the protective cover body is positioned above the head of the passenger; the protective cover body in the blocking position can limit the inertial swing range of the head of the passenger;

wherein the shield body is configured to: moving from the highest position to the normal position under the action of self weight; and when the forward acceleration of the vehicle is smaller than a preset negative threshold value, the vehicle moves from the normal position to the blocking position under the action of inertia.

In some embodiments, the movement of the protective covering relative to the safety seat headrest is a rotation or a sliding.

In some embodiments, a damping mechanism is further included for damping movement of the protective cover from the uppermost position to the normal position.

In some embodiments, a sliding connection mechanism is further included and is disposed between the protective covering and the safety seat headrest for effecting movement of the protective covering relative to the safety seat headrest.

In some embodiments, the sliding connection mechanism comprises a sliding frame provided with a sliding groove and a roller assembly arranged in the sliding groove, the sliding frame is fixedly installed with the outer side of the headrest of the safety seat, and the roller assembly is rotatably connected to the end part of the protective cover body positioned at the outer side of the headrest of the safety seat.

In some embodiments, the roller assembly includes at least two sets of rollers, each set of rollers includes two rollers respectively mounted inside and outside the protective cover, and the at least two sets of rollers are spaced apart in the sliding direction along the sliding groove.

In some embodiments, the sliding groove is a circular arc groove, and the sliding frame is provided with a long accommodating groove opening on the opposite surface of the protective cover body, and the long accommodating groove opening is used for the protective cover body to be embedded and rotate.

In some embodiments, still including setting up the bayonet lock subassembly in the sliding tray, the bayonet lock subassembly includes bayonet lock base of fixed mounting on the protecting shield body and installs bayonet lock and spring in the bayonet lock base, and the first end of bayonet lock is tightly pushed up by the spring, and the groove face of second end butt sliding tray is equipped with first arch on the groove face for carry out the screens to the second end of bayonet lock when the preceding acceleration of vehicle is not less than predetermined negative threshold value, in order to realize the spacing step-out in the normal state position of the protecting shield body.

In some embodiments, the second end of the bayonet has a chamfer and the first projection is a trapezoidal projection.

In some embodiments, the bayonet assembly further comprises an adjusting bolt disposed between the bayonet and the spring for adjusting the pre-load of the spring, the adjusting bolt having a first end biased against the spring and a second end threadedly coupled to the bayonet.

In some embodiments, the bayonet assembly further comprises a locating pin, the bayonet is provided with a stroke runner extending along the telescopic direction of the bayonet, the bayonet base is provided with a locating pin hole, and the locating pin penetrates into the locating pin hole and the stroke runner to limit circumferential rotation of the bayonet.

In some embodiments, the dowel holes are multiple and distributed along the circumference and/or the axial direction of the bayonet.

In some embodiments, the groove surface is provided with a plurality of second protrusions for abutting against the bayonet pins to buffer the movement of the protective cover body from the highest position to the normal position, the plurality of second protrusions are arranged at intervals in the sliding direction, and the protrusion height of the second protrusions is lower than that of the first protrusions.

In some embodiments, the second end of the bayonet has a chamfer and the second projection is a trapezoidal projection.

In some embodiments, the safety seat headrest further comprises a backrest plate and a first safety pull belt in a herringbone shape, wherein the backrest plate is used for inserting the safety seat headrest on a seat of a vehicle, the sliding connection mechanism comprises a pair of sliding frames fixed on two sides of the safety seat headrest, and the first safety pull belt is provided with a first end used for being connected with the vehicle and a pair of second ends fixedly connected with the pair of sliding frames respectively.

In some embodiments, the safety seat headrest further comprises a back plate and a second safety pull belt, wherein the back plate is used for inserting the safety seat headrest on a seat of a vehicle, the first end of the second safety pull belt is used for being connected with the vehicle, and the second end of the second safety pull belt is connected with the rear side of the safety seat headrest.

In some embodiments, the seat cushion further comprises a skin made of an energy absorbing material, and the sliding connection mechanism comprises a pair of sliding frames fixed on two sides of the safety seat headrest, and the skin wraps the sliding frames.

In some embodiments, the top of the protective cover body is provided with a channel extending forwards, an inertial body is arranged in the channel, the inertial body is in sliding or rolling contact with the channel and is configured to slide or roll relative to the channel under the action of inertia and drive the protective cover body to move to the blocking position.

In some embodiments, the inertial body comprises at least one spherical inertial body capable of rolling along the channel, and the bottom of the rear side of the channel is provided with a containing groove for maintaining the static state of the spherical inertial body in the channel when the protective cover body is in the normal position.

In one aspect of the present disclosure, a child safety seat is provided, comprising the aforementioned occupant active safety shield apparatus.

In one aspect of the present disclosure, a vehicle seat is provided that includes the aforementioned occupant active safety restraint apparatus.

In one aspect of the disclosure, a vehicle is provided, comprising the aforementioned occupant active safety protection device, the aforementioned child safety seat or the aforementioned vehicle seat.

Therefore, according to the embodiment of the disclosure, the protective cover body has the highest position, the normal position and the blocking position in the motion track, and a gap exists between the protective cover body at the highest position and the head of the passenger in the normal sitting posture in the vertical direction, so that the passenger can conveniently sit in the seat; go into seat back protective cover body and move to the normality position, the protective cover body can in time move to the position of blockking from the normality position and carry out safety protection when emergency brake or preceding collision, has improved safety protection performance.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:

FIG. 1 is a schematic illustration of a mounting structure of some embodiments of an occupant active safety restraint device according to the present disclosure;

FIGS. 2, 3 and 4 are schematic illustrations of a shield body 200 in an uppermost position 200A, a normal position 200B and a blocking position 200C, respectively, in some embodiments of the occupant active safety shield apparatus of the present disclosure;

FIG. 5 is a schematic illustration of a sliding frame 300 in some embodiments of the occupant active safety shield apparatus of the present disclosure;

FIG. 6 is a schematic illustration of a sliding connection mechanism in some embodiments of the occupant active safety shield apparatus of the present disclosure;

FIG. 7 is a schematic illustration of a shield body 200 in some embodiments of the disclosed occupant active safety shield apparatus;

FIG. 8 is a schematic illustration of the internal construction of bayonet assembly 400 in some embodiments of the occupant active safety shield apparatus of the present disclosure;

FIG. 9 is a schematic structural view of the adjusting bolt 403 in the embodiment of FIG. 8;

FIG. 10 is a schematic structural diagram of the embodiment of FIG. 8 showing the cooperative mounting of detent 402 and spring 404;

FIG. 11 is a schematic diagram of the external configuration of bayonet assembly 400 in some embodiments of the occupant active safety shield apparatus of the present disclosure;

FIGS. 12, 13, and 14 are schematic views of bayonet assembly 400 in shield body 200 in an uppermost position 200A, a normal position 200B, and a blocking position 200C, respectively, of some embodiments of the occupant active safety shield apparatus of the present disclosure;

FIG. 15 is a schematic illustration of a first seatbelt strap in some embodiments of the occupant active safety device of the present disclosure;

FIG. 16 is a schematic illustration of a second seatbelt strap in still other embodiments of the occupant active safety device of the present disclosure;

FIG. 17 is a schematic illustration of an inertial body 202 in some embodiments of the disclosed active occupant safety restraint apparatus;

FIG. 18 is a cut-away view of some embodiments of the occupant active safety shield apparatus of the present disclosure;

fig. 19 is a schematic view of a skin 102 in some embodiments of the occupant active safety shield apparatus of the present disclosure.

Description of the reference numerals

100. A safety seat headrest; 101. a backup plate; 102. covering a skin;

200. a protective mask body; 200A, highest position; 200B, normal position; 200C, the blocking position; 201. a channel; 202. an inertial body; 203. accommodating grooves;

300. a slide frame; 301. a roller assembly; 302. a second protrusion; 303. a first protrusion; 304. a sliding groove; 305. the accommodating long notch;

400. a bayonet assembly; 401. a bayonet base; 402. a bayonet lock; 403. adjusting the bolt; 404. a spring; 405. positioning pins; 406. a travel chute; 407. a positioning pin hole;

500. a first safety pull belt; 500' and a second safety draw tape.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

FIG. 1 is a schematic illustration of an installation configuration of some embodiments of an occupant active safety restraint apparatus according to the present disclosure. Referring to fig. 1 in combination with fig. 2 to 19, in some embodiments, an occupant active safety device for actively protecting an occupant in a vehicle, which may be a home or commercial automobile, a ship, a small or large aircraft, or the like, includes a safety seat headrest 100 and a protective hood body 200. The occupant may comprise an adult or a child, and may be the driver or a typical occupant of the vehicle. The safety seat headrest 100 may be directly mounted on the body of the child safety seat or may be directly mounted at the headrest position of the motor vehicle seat.

In the present disclosure, "front" refers to a direction in which an occupant faces after sitting, and correspondingly, "rear" refers to a direction in which the occupant faces away after sitting, "left" refers to a direction in which the occupant sits in the left hand, and "right" refers to a direction in which the occupant sits in the right hand.

In the embodiment shown in fig. 1-4, the occupant active safety device includes a safety seat headrest 100 and a shield body 200, the safety seat headrest 100 being adapted to be mounted on a vehicle; the protective cover body 200 is movably mounted on the safety seat headrest 100, and as shown in fig. 2 to 4, has an uppermost position 200A, a normal position 200B and a blocking position 200C in its movement locus, and as shown in fig. 2, the protective cover body 200 at the uppermost position 200A has a gap in the vertical direction with the head of the occupant in a normal sitting posture; as shown in fig. 3, the protective cover 200 in the normal position 200B is spaced from the head of the occupant in the normal sitting position and partially above the head of the occupant; as shown in FIG. 4, the protective shield body 200 in the blocking position 200C can limit the inertial swing range of the occupant's head.

The highest position 200A of the protective cover body 200 is the highest position that the protective cover body 200 can reach with respect to the safety seat headrest 100, as shown in fig. 2, when the protective cover body 200 is located at the highest position 200A, a gap exists between the protective cover body 200 and the head of the passenger in the normal sitting posture in the vertical direction, the passenger does not collide with the protective cover body 200 when sitting, and the sitting is convenient.

The normal position 200B of the protective cover body 200 is the position of the protective cover body 200 when the forward acceleration of the vehicle is not less than the preset negative threshold, that is, the position of the vehicle when sudden braking or forward collision does not occur during the driving process, wherein the preset negative threshold is a negative value, and the value thereof can be determined according to the influence degree of the acceleration on the head and neck of the passenger. As shown in fig. 3, when the protective cover body 200 is at the normal position 200B, although the normal position 200B is lower than the highest position 200A, since the head position of the seated occupant is also lower than the head position of the occupant before the seating, the head of the occupant is partially above the head of the occupant with a gap from the protective cover body 200 at the normal position, and the head of the occupant in the normal sitting posture is not restricted.

The blocking position 200C of the shield body 200 refers to a position at which the shield body 200 can restrict the inertial swing range of the occupant's head. As shown in fig. 4, the protective cover body 200 in the blocking position 200C limits the forward swing range of the head of the occupant from the front of the head of the occupant, so that the head of the occupant swings to the inner lining of the protective cover body 200 at most under the inertia effect, the energy of the head of the occupant seated therein is effectively absorbed, the displacement of the forward movement of the head of the occupant is limited, and the effects of protecting the head of the occupant and preventing neck whiplash injury caused by excessive forward bending of the head are achieved.

In order to enable the protective cover body 200 to smoothly move from the highest position 200A to the normal position 200B after the passenger sits in the seat, the protective cover body 200 can be configured to move from the highest position 200A to the normal position 200B under the action of self weight; to achieve occupant head and neck protection with protective shields 200 in blocking position 200C, protective shields 200 may be configured to move from normal position 200B to blocking position 200C under inertia when the vehicle's forward acceleration is less than a predetermined negative threshold.

The movement of the shield body 200 with respect to the safety seat headrest 100 may be rotational or sliding. The shield body 200 may be rotatably mounted on the safety seat headrest 100 by a rotation shaft structure, and may be rotatably or slidably mounted on the safety seat headrest 100 by a sliding connection structure. In some embodiments, the occupant active safety device further includes a sliding connection mechanism disposed between the shield body 200 and the safety seat headrest 100 for effecting movement of the shield body 200 relative to the safety seat headrest 100.

Taking the embodiment shown in fig. 5 to 8 as an example, the sliding connection mechanism includes a sliding frame 300 provided with a sliding groove 304 and a roller assembly 301 disposed in the sliding groove 304, the sliding frame 300 is formed by die casting or wire cutting of a hard rigid wear-resistant material, the sliding frame 300 is fixedly mounted on the outer side of the safety seat headrest 100 and can be fixedly mounted by riveting, the width of the sliding groove 304 is designed to accommodate the roller assembly 301 to slide smoothly in the sliding groove 304, and the roller assembly 301 is rotatably connected to the end portion of the protective cover body 200 located on the outer side of the safety seat headrest 100. The sliding connection is multi-point stressed, and the structural strength risk of the rotating connection mechanism stressed by a single rotating point can be prevented.

Referring to fig. 6 to 8, in some embodiments, the roller assembly 301 includes at least two sets of rollers, each set including two rollers respectively installed inside and outside the shield body 200, the at least two sets of rollers being spaced apart in the sliding direction along the sliding groove 304, thereby improving the reliability of the sliding connection. In order to ensure the sliding stability, in some embodiments, as shown in fig. 5 and 6, the sliding groove 304 is a circular arc groove, and the sliding frame 300 is provided with a receiving long notch 305 on the surface opposite to the shield body 200, into which the shield body 200 is inserted and rotated. In other embodiments, the sliding slot 304 is an arcuate slot of other forms, wherein the movement of the protective shield body 200 relative to the safety seat headrest 100 is sliding.

With respect to how shield body 200 is normally retained in normal position 200B, in some embodiments, as shown in FIGS. 6-11, occupant active safety shield apparatus further includes a bayonet assembly 400 disposed within sliding channel 304, bayonet assembly 400 including a bayonet base 401 fixedly mounted to shield body 200, bayonet 402 and a spring 404 mounted within bayonet base 401, bayonet 402 being formed of a hard, wear-resistant material, bayonet base 401 having a receiving space for spring 404 to normally telescope against bayonet 402. As shown in fig. 8 and 13, a first end of the locking pin 402 is pressed by the spring 404, a second end of the locking pin is pressed against a groove surface of the sliding groove 304, and a first protrusion 303 is disposed on the groove surface and used for locking the second end of the locking pin 402 when the forward acceleration of the vehicle is not less than a preset negative threshold value, so as to limit and stop the protective cover 200 at the normal position 200B. The matching of the bayonet lock component and the bulge is easy to implement, and the practicability is high.

The magnitude of the pretightening force of the spring 404 determines the magnitude of the inertial motion threshold of the protective cover body 200, when sudden braking or forward collision occurs during the driving process of the vehicle, the forward acceleration of the vehicle is smaller than a preset negative threshold, the protective cover body 200 overcomes the elastic force of the spring 404 on the latch 402 under the inertia effect, the latch 402 retracts to be separated from the first protrusion 303, and as shown in fig. 14, the protective cover body 200 moves to a blocking position 200C capable of limiting the inertial swing range of the head of the passenger.

To facilitate the first protrusion 303 squeezing detent 402 to compress spring 404 for retraction when the vehicle's forward acceleration is less than a preset negative threshold, in some embodiments, as shown in FIG. 10, the second end of detent 402 has a chamfer, as shown in FIGS. 11 and 13, first protrusion 303 is a trapezoidal protrusion.

Considering that the ages, weights and safety preferences of different passengers are different, when the ages or heights and weights of the passengers are smaller, a guardian needs a smaller inertial motion threshold value, so that the protective cover body 200 is more sensitive to inertial motion and has more protection opportunities for the smaller passengers; when the passenger is old or tall and heavy), the supporting and stress-bearing capacity of the neck is stronger, if the inertial motion threshold value of the protective cover body 200 is set to be smaller, the inertial motion situation of the protective cover body 200 can frequently occur, the riding experience of the passenger is influenced, therefore, the inertial motion threshold value is larger, and the traffic tool can trigger the protective cover body 200 to move and protect the function when enough injury and collision happen.

In order to allow a user to adjust the threshold of inertial motion of shield body 200 as desired to meet the needs of different occupants, in some embodiments, as shown in FIGS. 8-10, latch assembly 400 further includes an adjustment bolt 403 disposed between latch 402 and spring 404 for adjusting the preload of spring 404, the adjustment bolt 403 being biased by spring 404 at a first end and threadably coupled to latch 402 at a second end. The length of the spring 404 abutting against the bayonet 402 is adjusted by the relative rotation of the bayonet 402 and the adjusting bolt 403, so that the pre-tightening force of the spring 404 is adjusted, that is, the inertial movement threshold of the protective shield body 200 is adjusted.

Relative rotation of bayonet 402 and adjusting bolt 403 may be achieved by adjusting bayonet 402 relative to adjusting bolt 403, in order to avoid relative rotation between adjusting bolt 403 and bayonet 402 after adjustment, in some embodiments, as shown in figures 8-11, bayonet assembly 400 further comprises a detent pin 405, bayonet 402 is provided with a travel slot 406 extending in its telescopic direction, bayonet base 401 is provided with a detent pin hole 407, and as shown in figure 11, detent pin 405 penetrates detent pin hole 407 and travel slot 406 to limit circumferential rotation of bayonet 402.

To ensure that the alignment pins 405 can penetrate the travel slots 406 due to the different orientation of the travel slots 406 after rotating the bayonet 402 to adjust the threshold of inertial motion of differently sized shields 200, in some embodiments, as shown in FIG. 11, the alignment pin holes 407 are multiple and distributed along the circumference of the bayonet 402.

In order to allow a user to intuitively adjust the inertial motion threshold of the protective cover body 200 according to needs, in some embodiments, as shown in fig. 11, the plurality of positioning pin holes 407 are distributed along the axial direction of the latch 402, the positioning pin 405 penetrates the stroke sliding slot 406 after penetrating the positioning pin holes 407 at different positions in the axial direction, and the positioning pin 405 axially limits the latch 402, so that the length of the spring 404 abutting against the latch 402 is adjusted, the size of the inertial motion threshold of the protective cover body 200 is adjusted, and the adjustment is simple and reliable and has high practicability. The positioning pin holes 407 in different axial positions corresponding to different inertial motion thresholds can be obtained through repeated experiments.

In order to provide occupant seating time and to prevent restraint of the occupant when the protective shield body 200 is rapidly moved from the uppermost position 200A to the normal position 200B, in some embodiments, the occupant active safety device further includes a cushioning mechanism for cushioning movement of the protective shield body 200 from the uppermost position 200A to the normal position 200B. The protective cover body 200 can slowly move from the highest position 200A to the normal position 200B, a passenger pushes the protective cover body 200 to the highest position 200A before sitting in, the protective cover body 200 starts to slowly move to the normal position 200B, the passenger can sit in the seat during the period without worrying that the head can collide with the protective cover body 200, and the buffer protective cover body 200 also avoids overlarge impulse from moving from the highest position 200A to the normal position 200B so that the buffer protective cover body 200 can rush from the normal position 200B to the blocking position 200C.

As an implementation of the buffer mechanism, in some embodiments, as shown in fig. 8, 11 and 12, a plurality of second protrusions 302 are provided on the groove surface for abutting against the latch 402 to buffer the movement of the protective cover body 200 from the highest position 200A to the normal position 200B, the plurality of second protrusions 302 are arranged at intervals in the sliding direction, and the protrusion height of the second protrusions 302 is lower than the protrusion height of the first protrusions 303. The second bulge 302 with the bulge height lower than that of the first bulge 303 can not clamp the bayonet 402, and the second bulges 302 are arranged at intervals in the sliding direction to abut against the bayonet 402 one by one, so that the movement of the protective cover body 200 from the highest position 200A to the normal position 200B is slowed down, the structure is simple, and the implementation is easy.

In order to facilitate the second protrusion 302 pressing the detent 402 to compress the spring 404 for retraction, in some embodiments, as shown in FIGS. 10 and 11, the second end of the detent 402 has a chamfered corner and the second protrusion 302 is a trapezoidal protrusion.

In other embodiments, the damping mechanism is a damping mechanism, which also damps the movement of the protective cover body 200 from the highest position 200A to the normal position 200B.

In order to ensure the strength and stability of the safety seat headrest 100 when being impacted by the head of the occupant, in some embodiments, as shown in fig. 15, the occupant active safety guard further includes a back plate 101 and a first safety pull strap 500 having a chevron shape, the back plate 101 is used for inserting the safety seat headrest 100 on a seat of a vehicle, the sliding connection mechanism includes a pair of sliding frames 300 fixed on both sides of the safety seat headrest 100, and the first safety pull strap 500 has a first end for connecting with the vehicle and a pair of second ends fixedly connected with the pair of sliding frames 300, respectively. The strength of the top of the headrest is ensured by pulling the sliding frame 300 by the upper pull belt, the bottom of the safety seat headrest 100 is limited by the backup plate 101 as a limiting mechanism, and the installation stability is high.

As an alternative embodiment, as shown in fig. 16, the active safety protection device for an occupant further includes a back plate 101 and a second safety harness 500 ', the back plate 101 is used for inserting the safety seat headrest 100 on a vehicle, a first end of the second safety harness 500' is used for being connected with the vehicle, and a second end of the second safety harness is connected with the rear side of the safety seat headrest 100, so that the stress strength and the stability can be ensured.

Referring to fig. 17 and 19, in some embodiments, the active occupant safety device further includes a skin 102 made of an energy absorbing material, and the sliding connection mechanism includes a pair of sliding frames 300 fixed to both sides of the safety seat headrest 100, the skin 102 wrapping the sliding frames 300. The outer side of the sliding frame 300 is sleeved with the skin 102 matched with the shape of the seat, so that the shapes of the two sides of the protection device are beautified, and the safety seat headrest 100 has a new function of protecting the head of a passenger by side impact energy absorption.

In order to ensure that the protective hood 200 can move rapidly from the normal position 200B to the blocking position 200C under the inertia effect when the forward acceleration of the vehicle is less than the preset negative threshold, in some embodiments, as shown in fig. 17 and 18, a channel 201 extending forward is provided at the top of the protective hood 200, an inertial body 202 is provided in the channel 201, the inertial body 202 is in sliding or rolling contact with the channel 201, and the inertial body 202 is configured to slide or roll relative to the channel 201 under the inertia effect and drive the protective hood 200 to move to the blocking position 200C. The movement of the inertial body 202 in the passage 201 can cause the gravity center of the whole protective cover body 200 to change, and the collision of the inertial body 202 with the front end of the passage 201 can bring impulse and improve the movement speed of the protective cover body 200.

As shown in fig. 17 and 18, the inertial body 202 includes at least one spherical inertial body, such as a metal ball, etc., which can roll along the channel 201, and in other embodiments, the inertial body may also include an inertial body with other shapes, such as a rectangular parallelepiped, a drum, an ellipsoid, etc. As shown in fig. 18, the bottom of the rear side of the channel 201 is provided with a receiving groove 203 for maintaining the static state of the spherical inertial body in the channel 201 when the shield body 200 is in the normal position 200B. That is, the spherical inertial body is held by the accommodation groove 203 when the shield body 200 is in the normal position 200B, and the center of gravity of the spherical inertial body is not sufficient to cross the notch of the accommodation groove 203 when the forward acceleration of the vehicle is not less than the preset negative threshold value. When the forward acceleration of the vehicle is smaller than the preset negative threshold, the spherical inertia body is separated from the accommodating groove 203 under the inertia effect, and quickly impacts towards the front end along the channel 201. In some embodiments, the receiving groove 203 may be configured as a circular arc shaped groove that fits in comparison to the contour of a spherical inertia body.

The various embodiments of the occupant active safety shield apparatus of the present disclosure described above may be applied to a child safety seat, a vehicle seat, or within a vehicle. Accordingly, the present disclosure provides a child safety seat, a vehicle seat, and a vehicle that may include embodiments of any of the foregoing occupant active safety guards. The vehicle of the present disclosure may further include the aforementioned child safety seat or the aforementioned vehicle seat as a vehicle.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (22)

1. An occupant active safety shield apparatus for actively shielding an occupant in a vehicle, comprising:

a safety seat headrest (100) for mounting on the vehicle; and

a shield body (200) movably mounted on the safety seat headrest (100) and having an uppermost position (200A), a normal position (200B), and a blocking position (200C) in a movement locus thereof, the shield body (200) at the uppermost position (200A) having a gap in a vertical direction with a head of an occupant in a normal sitting posture; the protective hood body (200) in the normal position (200B) has a gap with the head of the passenger in a normal sitting position, and is partially positioned above the head of the passenger; the protective shield (200) in the blocking position (200C) is capable of limiting the range of inertial head swing of the occupant;

wherein the protective shield body (200) is configured to: moving under gravity from said uppermost position (200A) to said normal position (200B); moving from the normal position (200B) to the blocking position (200C) under inertia when the forward acceleration of the vehicle is less than a preset negative threshold.

2. The active occupant safety protection device according to claim 1, wherein the movement of the shield body (200) relative to the safety seat headrest (100) is a rotation or a sliding.

3. The active occupant safety protection device according to claim 1, further comprising a damping mechanism for damping movement of the protective shield body (200) from the uppermost position (200A) to the normal position (200B).

4. The active occupant safety shield apparatus according to claim 1, further comprising a sliding connection mechanism disposed between the shield body (200) and the safety seat headrest (100) for effecting movement of the shield body (200) relative to the safety seat headrest (100).

5. The active occupant safety protection device according to claim 4, wherein the sliding connection mechanism comprises a sliding frame (300) provided with a sliding groove (304) and a roller assembly (301) arranged in the sliding groove (304), the sliding frame (300) is fixedly installed with the outer side of the safety seat headrest (100), and the roller assembly (301) is rotatably connected to the end portion of the protective cover body (200) positioned at the outer side of the safety seat headrest (100).

6. The active occupant safety shield apparatus according to claim 5, wherein the roller assembly (301) includes at least two sets of rollers, each set of rollers including two rollers mounted inside and outside the shield body (200), respectively, the at least two sets of rollers being spaced apart in a sliding direction along the sliding groove (304).

7. The active passenger safety device according to claim 5, wherein the sliding groove (304) is a circular arc groove, and the sliding frame (300) is provided with a receiving long notch (305) on the surface opposite to the protective cover body (200) for the protective cover body (200) to be inserted and rotated.

8. The active occupant safety protection device according to claim 5, further comprising a latch assembly (400) disposed in the sliding groove (304), wherein the latch assembly (400) comprises a latch base (401) fixedly mounted on the protective shield body (200), and a latch (402) and a spring (404) mounted in the latch base (401), a first end of the latch (402) is abutted by the spring (404), a second end of the latch (402) is abutted by a groove surface of the sliding groove (304), and a first protrusion (303) is disposed on the groove surface for latching a second end of the latch (402) when a forward acceleration of the vehicle is not less than a preset negative threshold value, so as to achieve a step limit stop of the protective shield body (200) in the normal position (200B).

9. The active occupant safety shield of claim 8, wherein the second end of the latch (402) has a chamfer and the first protrusion (303) is a trapezoidal protrusion.

10. The active occupant safety shield apparatus of claim 8, wherein the latch assembly (400) further comprises an adjustment bolt (403) disposed between the latch (402) and the spring (404) for adjusting the pretension of the spring (404), the adjustment bolt (403) being biased by the spring (404) at a first end and threadedly coupled to the latch (402) at a second end.

11. The active occupant safety shield apparatus of claim 10, wherein the latch assembly (400) further comprises a detent pin (405), the latch (402) is provided with a travel runner (406) extending in a direction of extension and retraction thereof, the latch base (401) is provided with a detent pin hole (407), and the detent pin (405) penetrates the detent pin hole (407) and the travel runner (406) to limit circumferential rotation of the latch (402).

12. The active occupant safety shield of claim 11, wherein the registration pin holes (407) are a plurality and are distributed along a circumferential and/or axial direction of the latch pins (402).

13. The active occupant safety shield apparatus according to claim 8, wherein a plurality of second protrusions (302) are provided on the groove surface for abutting against the latch pins (402) to cushion the movement of the shield body (200) from the highest position (200A) to the normal position (200B), the plurality of second protrusions (302) are arranged at intervals in the sliding direction, and the protrusion height of the second protrusions (302) is lower than the protrusion height of the first protrusions (303).

14. The active occupant safety shield of claim 13, wherein the second end of the bayonet (402) has a chamfer and the second protrusion (302) is a trapezoidal protrusion.

15. The active occupant safety protection device according to claim 4, further comprising a back plate (101) and a first safety pull strap (500) in a herringbone shape, wherein the back plate (101) is used for inserting the safety seat headrest (100) on a seat of the vehicle, the sliding connection mechanism comprises a pair of sliding frames (300) fixed on two sides of the safety seat headrest (100), and the first safety pull strap (500) is provided with a first end used for being connected with the vehicle and a pair of second ends fixedly connected with the pair of sliding frames (300) respectively.

16. The active occupant safety restraint device of claim 1, further comprising a back plate (101) and a second safety harness (500 '), wherein the back plate (101) is used for inserting the safety seat headrest (100) on a seat of the vehicle, and the second safety harness (500') has a first end used for connecting with the vehicle and a second end connected with a rear side of the safety seat headrest (100).

17. The active occupant safety shield apparatus according to claim 4, further comprising a skin (102) made of an energy absorbing material, wherein the sliding connection mechanism includes a pair of sliding frames (300) fixed on both sides of the safety seat headrest (100), and the skin (102) wraps the sliding frames (300).

18. The active occupant safety protection device according to claim 1, wherein a channel (201) extending forward is formed at the top of the protective cover body (200), an inertial body (202) is formed in the channel (201), and the inertial body (202) is in sliding or rolling contact with the channel (201), configured to slide or roll relative to the channel (201) under the action of inertia and move the protective cover body (202) to the blocking position (200C).

19. The active occupant safety protection device according to claim 18, wherein the inertial body (202) comprises at least one spherical inertial body rollable along the channel (201), and the bottom of the rear side of the channel (201) is provided with a receiving groove (203) for maintaining the spherical inertial body in a stationary state in the channel (201) when the protective cover body (200) is in the normal position (200B).

20. A child safety seat, comprising: an occupant active safety shield as claimed in any one of claims 1 to 19.

21. A vehicle seat, characterized by comprising: an occupant active safety shield as claimed in any one of claims 1 to 19.

22. A vehicle, characterized by comprising: an occupant active safety shield as claimed in any one of claims 1 to 19, a child safety seat as claimed in claim 20 or a vehicle seat as claimed in claim 21.

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