Separated headrest
By designing a separate headrest, the airbag expansion reduces the acceleration difference between the head and chest, solving the problem that the existing headrest cannot fully support the head during collision, and improving the occupant's protection effect and the score of the whip test.
Patent Information
- Application Number
- CN202421420057.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-06-20
AI Technical Summary
During collision, the existing headrests are not fully supported due to rotation and initial gap, resulting in a large difference in acceleration between the head and chest, affecting the NIC value and whipping score.
A detached headrest is designed, including a main body pillow, a protective pillow and an expansion airbag device. When the vehicle collided, the airbag expanded, the main body pillow was separated from the protective pillow, and the airbag expanded to the side and neck, reducing the acceleration difference between the head and the chest.
Through the expansion of the airbag, the difference between the occupant's head and chest is reduced after the collision, effectively protecting the occupant's neck and side face, and improving the score of the whipping test.
Smart Images
Figure CN222554797U_ABST
Abstract
Description
Technical Field
[0001] The utility model mainly relates to the technical field of automobile safety, in particular to a split headrest. Background Art
[0002] When a vehicle collides, the seat assembly and restraint system play a vital role in protecting the occupants. In order to reduce the injuries to the occupants, CAE simulates various tests to reduce or avoid injuries to the driver and passengers. The low-speed rear impact (whiplash) is one of the important tests for occupant protection. There are many factors that affect the score during the entire whiplash test, among which NIC directly affects the whiplash score. The neck injury value NIC(t)=0.2Arelx(t)+[Vrelx(t)]2; From the formula, it can be seen that the factor affecting the NIC injury of the dummy is the acceleration difference between the T1 position and the head at the same time. The greater the difference between the two, the greater the NIC, and vice versa, the smaller the NIC; during the rear impact, the seat back assembly and the headrest assembly will rotate due to the impact. Due to the initial gap in the backset, the head is not supported accordingly, resulting in an initial acceleration of almost 0m / s2; at the same time, due to the displacement of the dummy, there is a certain acceleration in the chest. As a result, when the head contacts the headrest, there is a difference in the acceleration of the head and chest, which affects the NIC and then affects the whiplash score.
[0003] The existing headrest has an internal space for arranging airbags. Since the A side is specified by the OEM or vehicle layout, there is limited space for adding functions to the headrest. In addition to ensuring overall comfort, strength and other performance must be ensured in the limited space, so the airbag cannot be fully inflated. Therefore, if the airbag is arranged in the internal space of the headrest, it cannot fully protect the driver and passengers from injury or prevent injury when the airbag is deployed.
[0004] Therefore need a kind of separation type headrest to solve the above problems. Utility Model Content
[0005] The technical solution of the utility model aims at the technical problem that the existing technical solution is too single, provides a solution that is significantly different from the existing technology, and mainly provides a detachable headrest to solve the technical problems raised in the above-mentioned background technology.
[0006] The utility model adopts the following technical solution to solve the above technical problems: a detachable headrest, including a main foam pillow, the front ends of the main foam pillow are clamped with side foam pillows, the front side of the main foam pillow is clamped with the protective foam pillow, an expansion airbag device is arranged between the main foam pillow and the protective foam pillow, and the bottom of the main foam pillow is connected and fixed to one end of a symmetrically arranged insertion rod.
[0007] Preferably, the expansion airbag device includes symmetrically arranged side airbags, the side airbags are connected to the expansion slide rod, the side airbags are connected to the generator, and the generator is electrically connected to a plurality of controllers.
[0008] Preferably, the two side airbags are connected to a back neck airbag, the back neck airbag is connected to a generator, and the back neck airbag is connected to an expansion slide rod.
[0009] Preferably, the expansion slide rod includes a symmetrically arranged first cross bar, the two ends of the first cross bar are slidably connected to the inner circle of the second cross bar, the outer circle of the second cross bar close to the first cross bar is connected and fixed to the end of the longitudinal rod, the longitudinal rod is slidably connected to the slide groove opened in the connecting block, and the connecting block is connected and fixed to the main foam pillow.
[0010] Preferably, the longitudinal rod is connected and fixed to the communication position of the side airbag and the rear neck airbag.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: when the collision of the vehicle reaches a certain intensity, the controller is triggered, and the controller controls the generator, the generator sends a signal, ignites the gas generator to generate gas, filters and cools the gas, and then breaks through the airbag membrane, so that the side airbag and the rear neck airbag pop out, thereby reducing the difference between the body and the head after the impact, and finally achieving the effect of protecting the sides of the occupant's neck and side face.
[0012] Moreover, the side airbag and the rear neck airbag have different expansion degrees. The thickness of the side airbag expanding toward the front of the seat is between 15mm and 20mm, while the thickness of the rear neck airbag expanding toward the front of the seat is about 4mm to 5mm. This can fully cater to the passenger's head and neck, thereby providing full protection.
[0013] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model;
[0015] Figure 2 It is a schematic diagram of the structure of the side airbag and the back neck airbag after expansion of the utility model;
[0016] Figure 3 It is a schematic diagram of the internal structure of the utility model;
[0017] Figure 4 It is a structural schematic diagram of the expansion slide rod in the utility model.
[0018] In the figure: 1-main foam pillow, 2-protective foam pillow, 3-insertion rod, 4-expansion airbag device, 41-side airbag, 42-back neck airbag, 43-expansion slide bar, 431-connecting block, 4311-slide groove, 432-longitudinal rod, 433-first cross bar, 434-second cross bar, 5-side foam pillow. DETAILED DESCRIPTION
[0019] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.
[0020] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field of the present invention. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0022] See also Figure 1-3 A separate headrest includes a main foam pillow 1, the front ends of the main foam pillow 1 are clamped with side foam pillows 5, the front side of the main foam pillow 1 is clamped with the protective foam pillow 2, an expansion airbag device 4 is arranged between the main foam pillow 1 and the protective foam pillow 2, and the bottom of the main foam pillow 1 is connected and fixed to one end of a symmetrically arranged insertion rod 3. After the expansion airbag device 4 is opened, the protective foam pillows 2 on both sides of the main foam pillow 1 will be affected by the expansion airbag device 4 and separated from the main foam pillow 1, thereby giving the expansion airbag device 4 sufficient expansion space, so that the driver and passengers can fully protect their heads and necks.
[0023] The expandable airbag device 4 includes symmetrically arranged side airbags 41, which are connected to the expansion slide rod 43, and the side airbags 41 are connected to the generator. The generator is electrically connected to multiple controllers. When the vehicle collision reaches a certain intensity, the controller is triggered, and the controller controls the generator. The generator sends a signal to ignite the gas generator to generate gas, which is filtered and cooled, and then breaks through the airbag membrane, so that the side airbags 41 and the rear neck airbags 42 pop out, thereby reducing the difference between the body and the head after the impact, and finally protecting the sides of the occupant's neck and side face.
[0024] The two side airbags 41 are connected to a back neck airbag 42, and the back neck airbag 42 is connected to a generator, and the back neck airbag 42 is connected to an expansion slide bar 43. The back neck airbag 41 can protect the back of the occupant's head, and the side airbag 41 and the back neck airbag 42 have different expansion degrees. The thickness of the side airbag 41 expanded toward the front side of the seat is between 15mm and 20mm, and the thickness of the back neck airbag 42 expanded toward the front side of the seat is about 4mm to 5mm, so that it can fully cater to the passenger's head and neck, thereby providing full protection.
[0025] The expansion slide bar 43 includes a symmetrically arranged first cross bar 433, both ends of the first cross bar 433 are slidably connected to the inner circle of the second cross bar 434, the outer circle of the second cross bar 434 close to the first cross bar 433 is connected and fixed to the end of the longitudinal bar 432, the longitudinal bar 432 is slidably connected to the slide groove 4311 opened by the connecting block 431, and the connecting block 431 is connected and fixed to the main bubble pillow 1. When the expansion airbag device 4 is triggered, the side bubble pillow 5 will be expanded by the side airbag 41 and disintegrated from the main bubble pillow 1, and the first cross bar 433 will be affected by the side bubble pillow 5 and the side airbag 41 to slide out of the second cross bar 434 by a certain distance, thereby limiting the side bubble pillow 5 and preventing it from flying out, but still providing expansion space for the side airbag 41, and can be reset again for repeated use.
[0026] The longitudinal rod 432 is connected and fixed to the connecting position of the side airbag 41 and the rear neck airbag 42. This method limits the positions of both sides of the rear neck airbag 42 so that excessive expansion will not occur, thereby cooperating with the side airbag 41 to fully protect the passenger.
[0027] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.
Claims
1. A detachable headrest, characterized in that: The invention comprises a main foam pillow (1), the front sides of the main foam pillow (1) are clamped with side foam pillows (5), the front side of the main foam pillow (1) is clamped with a protective foam pillow (2), an expansion airbag device (4) is arranged between the main foam pillow (1) and the protective foam pillow (2), and the bottom of the main foam pillow (1) is connected and fixed to one end of a symmetrically arranged insertion rod (3).
2. A detachable headrest according to claim 1, characterized in that: The expansion airbag device (4) comprises symmetrically arranged side airbags (41), the side airbags (41) are connected to the expansion slide rods (43), the side airbags (41) are connected to the generator, and the generator is electrically connected to a plurality of controllers.
3. A detachable headrest according to claim 2, characterized in that: The two side airbags (41) are connected to a back neck airbag (42), the back neck airbag (42) is connected to a generator, and the back neck airbag (42) is connected to an expansion slide bar (43).
4. The detachable headrest according to claim 3, characterized in that: The expansion slide bar (43) includes a symmetrically arranged first cross bar (433), the two ends of the first cross bar (433) are slidably connected to the inner circle of the second cross bar (434), the outer circle of the second cross bar (434) close to the first cross bar (433) is connected and fixed to the end of the longitudinal bar (432), the longitudinal bar (432) is slidably connected to the slide groove (4311) provided in the connecting block (431), and the connecting block (431) is connected and fixed to the main foam pillow (1).
5. The detachable headrest according to claim 4, characterized in that: The longitudinal rod (432) is connected and fixed to the communication position of the side airbag (41) and the rear neck airbag (42).