CN204077435U - A kind of anti-whiplash injury seat framing structure - Google Patents

Abstract

The utility model discloses a kind of anti-whiplash injury seat framing structure, comprise support body, be arranged on the S shape spring at support body backrest place, be symmetricly set on two rotating shafts on support body top, connect the rotating shaft adapter plate between two rotating shafts, and being arranged on the backrest depression bar be connected on rear side of S shape spring and with described rotating shaft, the upper end of described backrest depression bar is also provided with adjustable head pillow frame, is provided with the retracing spring offseted with backrest depression bar between two rotating shafts.The pressure of passenger-back during collision is converted into the bearing force to head of passenger by the utility model, by the conversion to passenger's trunk motion during collision, originally the mode of motion being harmful to passenger is converted into actv. support, the generation of the whiplash injury caused by rear-end impact can be effectively reduced.

Description

An anti-whiplash seat frame structure

technical field

The utility model relates to the technical field of automobile passive safety, in particular to an anti-whiplash seat frame structure.

Background technique

Automobile traffic accidents have become a major public hazard that threatens and harms human beings in the world today. Traffic accidents not only cause huge casualties, but also bring huge economic losses to the whole world. In various types of vehicle traffic accidents, the head and neck of the human body is the most common injury site, which is especially common in rear-end collisions of automobiles. In rear-end collisions, the proportion of neck injuries is as high as 77.1%. Neck injury, usually called whiplash injury, specifically refers to the injury caused by the sudden hyperextension and hyperflexion force on the occupant's head and neck in a rear-end collision of a motor vehicle, which causes the soft tissue of the neck to bear excessive stress. It often causes multiple and long-lasting symptoms, such as headache, fatigue, dizziness, inability to concentrate, neck pain and neck and shoulder pain, etc. Although the symptoms caused by whiplash are not life-threatening, the treatment cost is high , and may produce long-term, significant sequelae. As an important support and protection component, car seats are more important to support passengers when a collision occurs. However, the current seat structure cannot support the passenger's head well when a rear-end collision occurs. Whiplash injuries from collisions have occurred from time to time.

For example, Chinese patent application No. 201320562946.8 discloses a translational energy-absorbing seat for preventing whiplash under rear-end collisions, including a seat headrest, a seat back, a seat cushion, and the seat cushion The sliding guide rail fixedly connected, the fixed guide rail fixedly connected with the car floor, the locking mechanism for adjusting the front and rear positions of the seat, the adjustment handle for adjusting the front and rear positions of the seat, and the translational energy-absorbing mechanism installed under the seat cushion, The translational energy-absorbing mechanism is arranged symmetrically on both sides of the seat. Although the above-mentioned patent achieves the purpose of preventing whiplash through the improvement of the base, the structure is complicated and affects assembly.

Utility model content

In view of this, the purpose of this utility model is to provide a new type of anti-whiplash seat frame structure, so that when a rear-end collision occurs, the seat headrest can provide more effective support and protection for the passenger's head, so as to achieve Purpose of reducing whiplash.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: an anti-whiplash seat frame structure, including a frame body, an S-shaped spring arranged on the backrest of the frame body, and two symmetrically arranged on the upper part of the frame body. The rotating shaft is connected to the rotating shaft fixing plate between the two rotating shafts, and the backrest pressure rod arranged on the rear side of the S-shaped spring and connected with the rotating shaft. An adjustable headrest frame is also provided on the upper end of the above-mentioned back pressure bar. In order to ensure the reset of the backrest pressure bar after a rear-end collision, a return spring is installed between the two rotating shafts against the backrest pressure bar. Through the restoring force of the return spring, the backrest pressure bar can be reset to ensure that the seat can be used repeatedly . With the above-mentioned technical scheme, the pressure on the back of the passenger during the collision is converted into a supporting force for the head of the passenger through the backrest pressure rod, the rotating shaft and the return spring, and the movement form that is originally harmful to the passenger is converted into an effective support, effectively reducing the impact caused by rear-end collisions. Collision results in whiplash damage.

In order to ensure that only when a rear-end collision occurs, the passenger's back is in contact with the backrest pressure rod, and the gap between the backrest pressure rod and the S-shaped spring is 5-10 mm. Front limit rods and rear limit rods are respectively installed on the front and rear of the backrest pressure rod on the frame body, wherein the front limit rod is used to limit the gap between the backrest pressure rod and the S-shaped spring, and the rear limit rod ensures When it happens, the backrest pressure bar will not deform too much.

The headrest frame is manufactured by bending and welding round steel, and the welded headrest frame is installed on the frame body through the headrest conduit at the upper end of the backrest pressure rod. The backrest pressure rod is bent by a bend pipe, and the upper part of the bent backrest pressure rod is welded to the rotating shaft to realize the synchronous movement of the backrest pressure rod and the rotating shaft. Up and down adjustment to realize the up and down adjustment of the headrest frame. The rotating shaft is made of cast steel, and the mating surfaces at both ends must be machined to ensure the accuracy of its installation and fit. The rotating end of the rotating shaft is installed at both ends of the frame body, and the rotation of the headrest frame around the upper end of the frame body is realized through the cooperation of the shaft surfaces of the two ends. . In order to limit the movement of the headrest frame and the rotating shaft except for the rotation, and at the same time ensure the synchronous rotation of the two rotating shafts, the two rotating shafts are respectively provided with special-shaped surfaces on the side close to the rotating shaft fixing plate. Through the cooperation of the special-shaped surfaces, the space between the rotating shaft fixing plate and the rotating shaft is limited. relative motion. In order to facilitate installation, the rotating shaft fixing plate is divided into upper and lower parts, which are fixed by bolts.

Beneficial effects of the utility model: the utility model converts the original fixed headrest framework into a mechanism that can rotate around the frame body through the backrest pressure rod, the rotating shaft, the return spring and the rotatable headrest framework. When a rear-end collision occurs, the entire torso of the passenger will move backward due to the inertial force. At this time, the passenger's back pressure is relatively large, and the large back pressure presses the backrest rod to move backward, thereby driving the headrest frame to rotate forward. Since the passenger's head is supported by the forward-moving seat headrest during the backward movement, the hyperextension and hyperflexion of the head and neck caused by the rear collision will be greatly reduced, thereby achieving the purpose of reducing whiplash injuries, and The structure is simple and easy to implement, and the setting of the return spring ensures the reusability of the structure.

The utility model will be described in detail below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is the front view of the utility model.

Fig. 2 is a perspective view of the utility model.

Fig. 3 is a structural schematic diagram of the rotating shaft.

FIG. 4 is a schematic structural view of a rotating shaft fixing plate.

Detailed ways

Embodiment, please refer to Fig. 1 to 2 together, a kind of anti-whiplash seat framework structure, comprises frame body 9, the S-shaped spring 8 that is arranged on the backrest of frame body 9, two symmetrically arranged on frame body 9 tops Two rotating shafts 3, connecting the rotating shaft fixing plate 2 between the two rotating shafts 3, and the back pressure rod 7 arranged on the rear side of the S-shaped spring 8 and connected with the rotating shaft 3. An adjustable headrest frame 1 is also provided on the upper end of the backrest pressing bar 7, and a back-moving spring 4 that is offset against the backrest pressing bar 7 is installed between the two rotating shafts 3. Both the above-mentioned backrest pressing rod 7 and the headrest frame 1 are bent. The gap between the backrest pressing bar 7 and the S-shaped spring 8 is 5～10mm, and the front and rear limiting bars 6 and the rear limiting bars 5 are respectively installed on the backrest pressing bar 7 on the support body 9 . Wherein, the front limit rod 6 is used to limit the gap between the backrest pressure rod 7 and the S-shaped spring 8, and the rear limit rod 5 ensures that the backrest pressure rod 7 will not deform too much when a rear-end collision occurs.

Please refer to Figures 3 to 4 together. In order to limit the movement of the headrest frame 1 and the rotating shaft 3 except for the rotation, and at the same time ensure the synchronous rotation of the two rotating shafts 3, the two rotating shafts 3 are respectively provided with special-shaped surfaces 10 on the side close to the rotating shaft fixing plate 2. , the relative movement between the rotating shaft fixing plate 2 and the rotating shaft 3 is limited through the cooperation of the special-shaped surfaces. In order to facilitate installation, the rotating shaft fixing plate is divided into upper and lower parts, which are fixed by bolts.

The above embodiments have only set forth the basic principles of the present utility model, and without departing from the spirit and scope of the present utility model, the present utility model also has various transformations, and these transformations all should be regarded as falling into the scope of the utility model claimed. within.

Claims (5)

1. an anti-whiplash injury seat framing structure, comprise support body (9), be arranged on the S shape spring (8) at support body (9) backrest place, it is characterized in that: also comprise two rotating shafts (3) being symmetricly set on support body (9) top, connect the rotating shaft adapter plate (2) between two rotating shafts (3), and be arranged on S shape spring (8) rear side and the backrest depression bar (7) be connected with described rotating shaft (3); The upper end of described backrest depression bar (7) is also provided with adjustable head pillow frame (1), is provided with the retracing spring (4) offseted with backrest depression bar (7) between two rotating shafts (3).

2. anti-whiplash injury seat framing structure as claimed in claim 1, is characterized in that: also comprise and being installed on support body (9) for limiting the front limit bar (6) and rear position-limited lever (5) that backrest depression bar (7) seesaws.

3. anti-whiplash injury seat framing structure as claimed in claim 1 or 2, is characterized in that: the gap between described backrest depression bar (7) and S shape spring (8) is 5 ~ 10mm.

4. anti-whiplash injury seat framing structure as claimed in claim 3, is characterized in that: described backrest depression bar (7) and head pillow frame (1) are bent.

5. anti-whiplash injury seat framing structure as claimed in claim 3, is characterized in that: described rotating shaft (3) is respectively equipped with the shaped face (10) for limiting relative motion between rotating shaft adapter plate and rotating shaft near rotating shaft adapter plate (2) side.