Headrest mechanism capable of actively moving forwards before impending collision of vehicle
By actively moving forward before the vehicle is about to crash, the screw motor drives the slide rail structure to make the headrest shell contact the passenger's neck, the problem that the traditional headrest cannot fit completely is solved and the safety during collision is improved.
Patent Information
- Application Number
- CN202422617180.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-29
AI Technical Summary
The existing seat headrest cannot fully fit the passenger's neck in a rear-end accident, resulting in a risk of whiplashing and unable to effectively protect the safety of the head and neck.
A headrest mechanism is designed to actively move forward before a vehicle is about to occur. The connecting bracket and slide rail structure is driven by a screw motor, so that the front shell of the headrest actively moves forward forward before the collision and contacts the passenger's neck to provide active protection.
It improves the safety of occupants during vehicle collisions, reduces the risk of whiplashing on the head and neck, and is suitable for many types of headrests.
Smart Images
Figure CN223161680U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle seats, in particular to a headrest mechanism that actively moves forward before a vehicle is about to collide. Background Art
[0002] The main function of the seat headrest is to prevent the cervical vertebrae of the front vehicle passengers from being injured due to inertia in safety accidents such as rear-end collisions. When a rear-end safety accident occurs in a vehicle, the heads of the passengers will swing backward instantly. Without a headrest, it will cause serious whiplash injuries. With a headrest, it can effectively relieve the huge impact force caused by the safety accident and prevent neck injuries caused by excessive backward tilting of the head. However, due to the sitting postures of the passengers, it is impossible to achieve complete fitting between the headrest and the passengers' necks, and there may still be a risk of whiplash injuries in case of an accident. Summary of the Utility Model
[0003] In view of the above problems, the purpose of the utility model is to provide a headrest mechanism that actively moves forward before a vehicle is about to collide, which can better protect the safety of the heads and necks of the vehicle occupants during a vehicle collision, so as to overcome the above-mentioned deficiencies of the prior art.
[0004] A headrest mechanism that actively moves forward before a vehicle is about to collide provided by the utility model includes: a headrest rod fixedly connected to a skeleton, a headrest fixing seat fixedly connected to the headrest rod, a slide rail guiding groove opened in the headrest fixing seat in the horizontal direction, a slide rail sliding back and forth in the slide rail guiding groove, a connecting bracket fixedly connected to the front end of the slide rail, a headrest front shell fixedly connected to the connecting bracket, and a lead screw motor fixedly connected to the headrest fixing seat. The lead screw of the lead screw motor passes through the headrest fixing seat and is threadedly connected to a lead screw hole opened on the connecting bracket. The lead screw of the lead screw motor drives the connecting bracket to move back and forth on the headrest fixing seat through the slide rail, indirectly driving the headrest front shell to move back and forth on the headrest fixing seat. When the lead screw motor receives a collision signal, it starts and drives the lead screw to rotate. During the rotation of the lead screw, the headrest front shell on the connecting bracket moves forward on the headrest fixing seat and contacts the passenger's neck.
[0005] As a preference of the utility model, two slide rail guiding grooves are symmetrically opened on the headrest fixing seat, and the connecting bracket is slidably connected to the headrest fixing seat through two slide rails.
[0006] As a preference of the utility model, a lead screw avoidance hole for the lead screw to pass through is opened on the headrest fixing seat.
[0007] The beneficial effects of the utility model are as follows: Compared with traditional headrests, by adding a headrest mechanism that actively moves forward, it can provide active protection for the heads and necks of vehicle occupants, and is applicable to more types of headrests, improving the safety factor of vehicle occupants during a collision. Description of the Drawings
[0008] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present utility model, other objects and results of the present utility model will become clearer and easier to understand. In the drawings:
[0009] Figure 1 It is a schematic diagram of the overall structure of this embodiment.
[0010] Figure 2 It is a schematic diagram of the connection bracket of this embodiment installed with the headrest fixing seat through the slide rail.
[0011] Figure 3 It is an exploded view of this embodiment.
[0012] The reference numerals therein include: headrest rod 1, headrest fixing seat 2, slide rail guide groove 3, slide rail 4, connection bracket 5, headrest front shell 6, lead screw motor 7, lead screw avoidance hole 8, lead screw hole 9, wire harness 10. Detailed implementation manners
[0013] Refer to Figures 1-3 As shown, a headrest mechanism for a vehicle that actively moves forward before an impending collision provided in this embodiment includes: two headrest rods 1 fixedly connected to the skeleton, a headrest fixing seat 2 fixedly connected to the two headrest rods 1, two slide rail guide grooves 3 opened in the headrest fixing seat 2 in the horizontal direction, a slide rail 4 sliding back and forth in the slide rail guide grooves 3, a connection bracket 5 fixedly connected to the front end of the slide rail 4, a headrest front shell 6 fixedly connected to the connection bracket 5, and a lead screw motor 7 fixedly connected to the headrest fixing seat 2. The lead screw of the lead screw motor 7 passes through the lead screw avoidance hole 8 of the headrest fixing seat 2 and is threadedly connected to the lead screw hole 9 opened on the connection bracket 5. The lead screw of the lead screw motor 7 drives the connection bracket 5 to move back and forth on the headrest fixing seat 2 through the slide rail 4, indirectly driving the headrest front shell 6 to move back and forth on the headrest fixing seat 2. Among them, the lead screw motor 7 is located on the back of the headrest fixing seat 2, the headrest front shell 6 is located on the front of the headrest fixing seat 2, and the soft package on the headrest front shell 6 contacts the neck of the passenger. The wire harness 10 of the lead screw motor 7 passes through the headrest rod 1 and is connected to the vehicle control system.
[0014] Working process: During the driving of the vehicle, the vehicle sensor recognizes the distance and speed from the front and rear vehicles. After judgment and prediction that a collision will occur within 1 - 2 s, the vehicle computer will transmit a start signal to the lead screw motor 7 through the wire harness 10. The lead screw motor 7 immediately starts to work, and the lead screw on the lead screw motor 7 starts to rotate, driving the connection bracket 5 to move forward relative to the headrest fixing seat 2 through the slide rail 4. The connection bracket 5 and the headrest front shell 6 are fixed together, thereby realizing the forward movement of the headrest to protect the head and neck safety of the vehicle occupants. One minute after the signal is sent, the vehicle computer sends a reverse signal to the lead screw motor 7 again so that the headrest front shell 6 can return to the initial position under the drive of the lead screw motor 7.
[0015] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims
1. A headrest mechanism that actively moves forward before a vehicle is about to collide, characterized in that, Including: A headrest rod fixedly connected to the skeleton, a headrest fixing seat fixedly connected to the headrest rod, a slide rail guiding groove horizontally opened on the headrest fixing seat, a slide rail sliding back and forth in the slide rail guiding groove, a connecting bracket fixedly connected to the front end of the slide rail, a headrest front shell fixedly connected to the connecting bracket, and a lead screw motor fixedly connected to the headrest fixing seat. The lead screw of the lead screw motor passes through the headrest fixing seat and is threadedly connected to a lead screw hole opened on the connecting bracket. The lead screw of the lead screw motor drives the connecting bracket to move back and forth on the headrest fixing seat through the slide rail, indirectly driving the headrest front shell to move back and forth on the headrest fixing seat. When the lead screw motor receives a collision signal, it starts and drives the lead screw to rotate. During the rotation of the lead screw, the headrest front shell on the connecting bracket moves forward on the headrest fixing seat and contacts the passenger's neck.
2. The headrest mechanism for actively moving forward before a vehicle is about to collide according to claim 1, wherein, Two slide rail guiding grooves are symmetrically opened on the headrest fixing seat, and the connecting bracket is slidably connected to the headrest fixing seat through the two slide rails.
3. The headrest mechanism for actively moving forward before a vehicle is about to collide according to claim 1, characterized in that, A lead screw avoidance hole for the lead screw to pass through is opened on the headrest fixing seat.