High strength safety seat headrest

Abstract

The utility model discloses a high -strength security seat headrest relates to seat headrest technical field, including first skeleton, first skeleton sliding connection has second skeleton, and first skeleton is provided with protection subassembly with second skeleton, the protection subassembly includes accommodating groove, the accommodating groove is established in the inside of first skeleton, two storage boxes are fixedly installed in the inside of accommodating groove, two the storage box is filled with viscous fluid, two storage boxes are rotatably connected with rotation axis, the part of rotation axis in two storage boxes is fixedly installed with stirring vane, and the part of rotation axis between two storage boxes is fixedly installed with gear, the utility model discloses through with the impact of head to the impact of second skeleton, converts into the power of second skeleton and rack movement, and rack movement drives gear rotation, and gear, rotation axis, stirring vane synchronous rotation make viscous fluid produce internal friction, and convert mechanical energy into heat energy dissipation.

Description

Technical Field

[0001] This utility model relates to the field of seat headrest technology, and in particular to a high-strength safety seat headrest. Background Technology

[0002] A headrest is a device installed on the upper part of the back of a vehicle seat to restrain the occupant's head from tilting back relative to the torso. The core function of a headrest is to reduce the risk of cervical spine injury in a collision by limiting the range of head movement, while also providing comfort support during daily driving.

[0003] Most existing seat headrests use EPP foam or PU foam as filling material, and absorb energy through the compression deformation of the filling material. However, the deformation of the filling material has elastic recovery. When the head collides with the seat headrest due to an accident, some energy will be released in the opposite direction, causing the head to bounce back, resulting in insufficient actual energy absorption efficiency and increasing the risk of cervical spine injury. Utility Model Content

[0004] Given that existing seat headrests mostly use EPP foam or PU foam as filling material, and absorb energy through the compression deformation of the filling material, but the deformation of the filling material has elastic recovery, when the head collides with the seat headrest due to an accident, some energy will be released in the opposite direction, causing the head to bounce back, resulting in insufficient actual energy absorption efficiency and exacerbating the risk of cervical spine injury, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a high-strength safety seat headrest, which converts the impact of the head hitting the second frame into the power for the movement of the second frame and rack. The movement of the rack drives the gear to rotate, and the gear, rotating shaft and stirring blade rotate synchronously, causing the viscous fluid to generate internal friction, converting mechanical energy into heat energy for dissipation. The energy absorption process of this solution is irreversible, which improves the energy absorption efficiency and avoids the risk of cervical spine injury caused by rebound.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high-strength safety seat headrest, including a first frame, a second frame slidably connected to the first frame, and protective components provided on the first frame and the second frame;

[0007] The protective assembly includes a receiving groove, which is formed inside the first frame. Two storage boxes are fixedly installed inside the receiving groove. The two storage boxes are filled with a viscous fluid. The two storage boxes are rotatably connected to a rotating shaft. The portion of the rotating shaft located inside the two storage boxes is fixedly equipped with a stirring blade. The portion of the rotating shaft located between the two storage boxes is fixedly equipped with a gear. A rack is fixedly installed on the second frame. The rack is slidably connected to the first frame. The rack extends into the receiving groove and meshes with the gear.

[0008] In a preferred embodiment of the high-strength safety seat headrest described in this utility model, the outer side of the second frame is covered with a first energy-absorbing layer, and the outer side of the first energy-absorbing layer is covered with a second energy-absorbing layer.

[0009] As a preferred embodiment of the high-strength safety seat headrest described in this utility model, flanges are respectively provided on both sides of the front end of the second frame, the first energy-absorbing layer, and the second energy-absorbing layer.

[0010] As a preferred embodiment of the high-strength safety seat headrest of this utility model, the first frame is provided with sliding grooves on the left and right sides respectively, the second frame is fixedly connected with sliders, and the two sliders are slidably connected to the sliding grooves respectively.

[0011] As a preferred embodiment of the high-strength safety seat headrest described in this utility model, the slider and the slide groove are provided with a locking component;

[0012] The locking component includes a directional groove, which is formed on the slider. Two inserts are slidably connected to the directional groove. Insert teeth are formed on the upper and lower surfaces of the groove, and the two inserts are inserted into the gaps between a number of insert teeth.

[0013] As a preferred embodiment of the high-strength safety seat headrest of this utility model, the locking assembly further includes a compression ball located in the directional groove and between two inserts. The second frame and the slider are provided with a storage groove. A spring is fixedly installed in the storage groove. The spring is fixedly connected to the compression ball. An operating rod is fixedly connected to the compression ball. The operating rod passes through the second frame, the first energy-absorbing layer, and the second energy-absorbing layer.

[0014] As a preferred embodiment of the high-strength safety seat headrest described in this utility model, the two inserts are provided with grooves.

[0015] The beneficial effects of this utility model are:

[0016] 1. This utility model converts the impact of the head hitting the second frame into the power for the movement of the second frame and rack. The movement of the rack drives the gear to rotate. The gear, rotating shaft and stirring blade rotate synchronously, causing internal friction in the viscous fluid, which converts mechanical energy into heat energy for dissipation. The energy absorption process of this solution is irreversible, which improves the energy absorption efficiency and avoids the risk of cervical spine injury caused by rebound.

[0017] 2. This utility model absorbs the initial impact through the first energy-absorbing layer, protects the cervical spine by preventing excessive deformation through the second energy-absorbing layer, and combines the damping generated by the viscous fluid to form a three-level energy-absorbing system that covers low-speed to high-speed collision scenarios, thus improving its practicality.

[0018] 3. This utility model uses a locking component to fix the slider in the groove, thereby determining the position of the second frame and avoiding affecting the driving experience. When a traffic accident occurs, the force of the head impact will hit the insert block, causing the insert block to break due to the groove, allowing the slider to slide and ensuring the timely operation of the protective component. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-strength safety seat headrest according to the present invention.

[0021] Figure 2 This is a horizontal cross-sectional view of a high-strength safety seat headrest according to the present invention.

[0022] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0023] Figure 4 for Figure 2 Enlarged diagram of point B in the middle.

[0024] Figure 5 This is a vertical cross-sectional view of a high-strength safety seat headrest according to the present invention.

[0025] Figure 6 for Figure 5 Enlarged diagram of point C in the middle.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. First frame; 2. Second frame; 3. Protective component; 301. Receiving groove; 302. Storage box; 303. Rotating shaft; 304. Stirring blade; 305. Gear; 306. Rack; 4. First energy-absorbing layer; 5. Second energy-absorbing layer; 6. Flange; 7. Slide groove; 8. Slider; 9. Locking component; 901. Orientation groove; 902. Insertion block; 903. Insertion tooth; 904. Extrusion ball; 905. Storage groove; 906. Spring; 907. Operating lever; 10. Break groove. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] Reference Figures 1-4 This is the first embodiment of the present invention, which provides a high-strength safety seat headrest, including a first frame 1, and a second frame 2 slidably connected to the first frame 1. The first frame 1 and the second frame 2 are made of high carbon steel. The first frame 1 is installed on the seat in a traditional way, such as by inserting a rod and buckling together. The second frame 2 can slide back and forth on the first frame 1, so as to better fit the head and provide support. The first frame 1 and the second frame 2 are provided with protective components 3.

[0031] The protective component 3 includes a receiving groove 301, which provides space for the installation of other parts. The receiving groove 301 is located inside the first frame 1. Two storage boxes 302 are fixedly installed inside the receiving groove 301. The two storage boxes 302 are filled with a viscous fluid, which is high-viscosity silicone oil. The viscous fluid generates a damping force on the rotation of the stirring blade 304, which can dissipate the energy of the rotation of the stirring blade 304. The two storage boxes 302 are respectively located at both ends of the receiving groove 301 to ensure the stability of the damping force of the viscous fluid on the stirring blade 304. The two storage boxes 302 are rotatably connected to a rotating shaft 303, which is located between the two storage boxes. A stirring blade 304 is fixedly installed in part of 302. A gear 305 is fixedly installed in part of the rotating shaft 303 located between the two storage boxes 302. The rotating shaft 303, stirring blade 304, and gear 305 rotate synchronously. A rack 306 is fixedly installed in the second frame 2. The rack 306 is slidably connected to the first frame 1. The rack 306 extends into the receiving groove 301 and meshes with the gear 305. When the rack 306 moves with the second frame 2, the rack 306 drives the gear 305 to rotate. The gear 305 drives the rotating shaft 303 and stirring blade 304 to rotate together. The rotating stirring blade 304 stirs the viscous fluid and generates damping, which consumes the energy of the impact and thus provides protection.

[0032] The first frame 1 has sliding grooves 7 on its left and right sides respectively. The second frame 2 is fixedly connected with sliders 8. The two sliders 8 are slidably connected to the sliding grooves 7 respectively. The sliding grooves 7 and sliders 8 cooperate to guide the sliding direction of the second frame 2.

[0033] Example 2

[0034] Reference Figures 1-2This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that: the outer side of the second skeleton 2 is covered with a first energy-absorbing layer 4, and the outer side of the first energy-absorbing layer 4 is covered with a second energy-absorbing layer 5. The first energy-absorbing layer 4 is rigid polyurethane, and the second energy-absorbing layer 5 is soft silicone. The first energy-absorbing layer 4 has a stronger deformation capacity than the second energy-absorbing layer 5 and is responsible for absorbing the initial impact. The second energy-absorbing layer 5 has a weaker deformation capacity than the first energy-absorbing layer 4 to prevent excessive deformation and protect the cervical spine. Through the deformation of the first energy-absorbing layer 4, the deformation of the second energy-absorbing layer 5, and the damping generated by the viscous fluid, a three-level energy absorption system is formed to achieve energy gradient attenuation. In order to improve aesthetics, the second skeleton 2, the first energy-absorbing layer 4, and the second energy-absorbing layer 5 can be wrapped inside the outer skin, and the first skeleton 1 is wrapped by another outer skin.

[0035] The second frame 2, the first energy-absorbing layer 4, and the second energy-absorbing layer 5 are respectively provided with flanges 6 on both sides of the front end. The flanges 6 increase the contact area between the headrest and the head, disperse pressure, and improve the response to lateral impacts.

[0036] Example 3

[0037] Reference Figures 2-6 This is the third embodiment of the present invention, which differs from the second embodiment in that: the slider 8 and the slide groove 7 are provided with a locking component 9;

[0038] The locking component 9 includes a directional groove 901, which is formed on the slider 8. Two insert blocks 902 are slidably connected to the directional groove 901. The two insert blocks 902 can slide up and down in the guide groove 902. When the two insert blocks 902 move away from each other along the guide groove 902, the insert blocks 902 will insert into the gaps of the insert teeth 903. When the two insert blocks 902 move closer to each other along the guide groove 902, the insert blocks 902 will leave the gaps of the insert teeth 903. Insert teeth 903 are respectively formed on the upper and lower surfaces of the slide groove 7. The two insert blocks 902 are respectively inserted into the gaps of several insert teeth 903. By pushing the extrusion ball 904 between the two insert blocks 902, the insert blocks 902 are inserted into the gaps of the insert teeth 903. At this time, the insert blocks 902 and the insert teeth 903 cooperate to fix the position of the slider 8.

[0039] The locking assembly 9 also includes a compression ball 904, which is located in the directional groove 901 and between the two inserts 902. The distance between the two inserts 902 can be controlled by the state of the compression ball 904 in the positioning groove 901. The second frame 2 and the slider 8 have a storage groove 905. A spring 906 is fixedly installed in the storage groove 905. When the compression ball 904 moves, the spring 906 will deform. The spring 906 is fixedly connected to the compression ball 904. An operating rod 907 is fixedly connected to the compression ball 904. The operating rod 907 passes through the second frame 2, the first energy-absorbing layer 4, and the second energy-absorbing layer 5. The position of the compression ball 904 can be changed by pushing and pulling the operating rod 907, thereby controlling whether the compression ball 904 pushes the insert 902.

[0040] The two inserts 902 are provided with break grooves 10. By setting the break grooves 10, the strength of the inserts 902 is reduced. In the event of an accident, the impact of the head will break the inserts 902, allowing the slider 8 to slide, thereby enabling the protective component 3 to work.

[0041] In use, pull the operating lever 907 outward to allow part of the extrusion ball 904 to enter the storage slot 905. At this time, the spring 906 is compressed, and the restraint on the insertion block 902 is reduced. Then, push the second frame 2. The insertion block 902 slides up and down in the orientation slot 901 due to the inclined surface of the insertion teeth 903, allowing the second frame 2 to slide. This allows the second frame 2 to better fit the head. After the second frame 2 is adjusted, push the operating lever 907 back to its original position. The arc surface of the extrusion ball 904 pushes the insertion block 902 into the gap of the insertion teeth 903, limiting the slider 8 and the second frame 2. The spring 906 can prevent the operating lever 907 from moving arbitrarily.

[0042] When a rear-end collision occurs, the occupant's head tilts backward. The first energy-absorbing layer 4 absorbs the initial impact, and the second energy-absorbing layer 5 prevents excessive deformation and protects the cervical spine. If the impact force of the rear-end collision is too large, the force of the head tilting backward will impact the insert block 902. The insert block 902 will break due to the broken groove 10, allowing the slider 8 to slide. In turn, the second frame 2 slides in the opposite direction. The second frame 2 drives the rack 306 to move. The movement of the rack 306 drives the gear 305 to rotate. The gear 305, the rotating shaft 303, and the stirring blade 304 rotate synchronously. The stirring blade 304 stirs the viscous fluid and uses the internal friction of the viscous fluid to generate damping, converting mechanical energy into heat energy for dissipation.

[0043] The remaining structure is the same as that in Example 1.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A high-strength safety seat headrest, characterized in that: It includes a first frame (1), a second frame (2) is slidably connected to the first frame (1), and protective components (3) are provided on the first frame (1) and the second frame (2); The protective component (3) includes a receiving groove (301) which is opened inside the first frame (1). Two storage boxes (302) are fixedly installed inside the receiving groove (301). The two storage boxes (302) are filled with viscous fluid. The two storage boxes (302) are rotatably connected to a rotating shaft (303). A stirring blade (304) is fixedly installed on the part of the rotating shaft (303) located inside the two storage boxes (302). A gear (305) is fixedly installed on the part of the rotating shaft (303) located between the two storage boxes (302). A rack (306) is fixedly installed on the second frame (2). The rack (306) is slidably connected to the first frame (1). The rack (306) extends into the receiving groove (301) and meshes with the gear (305).

2. The high-strength safety seat headrest according to claim 1, characterized in that: The second skeleton (2) is covered with a first energy-absorbing layer (4) on the outside, and the first energy-absorbing layer (4) is covered with a second energy-absorbing layer (5) on the outside.

3. A high-strength safety seat headrest according to claim 2, characterized in that: The front ends of the second skeleton (2), the first energy-absorbing layer (4), and the second energy-absorbing layer (5) are respectively provided with flanges (6).

4. A high-strength safety seat headrest according to claim 2, characterized in that: The first frame (1) has sliding grooves (7) on its left and right sides respectively, and the second frame (2) is fixedly connected with sliders (8), and the two sliders (8) are slidably connected to the sliding grooves (7) respectively.

5. A high-strength safety seat headrest according to claim 4, characterized in that: The slider (8) and the slide (7) are provided with locking components (9); The locking component (9) includes a directional groove (901), which is opened on the slider (8). The directional groove (901) is slidably connected to two inserts (902). The upper and lower surfaces of the slide groove (7) are respectively provided with insert teeth (903), and the two inserts (902) are respectively inserted into the gaps of a number of insert teeth (903).

6. A high-strength safety seat headrest according to claim 5, characterized in that: The locking assembly (9) also includes a compression ball (904), which is located in the directional groove (901) and between two inserts (902). The second frame (2) and the slider (8) are provided with a storage groove (905). A spring (906) is fixedly installed in the storage groove (905). The spring (906) is fixedly connected to the compression ball (904). An operating rod (907) is fixedly connected to the compression ball (904). The operating rod (907) passes through the second frame (2), the first energy-absorbing layer (4), and the second energy-absorbing layer (5).

7. A high-strength safety seat headrest according to claim 5, characterized in that: The two inserts (902) are provided with slots (10).

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