JPH0434085Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to an attitude control device for a vehicle such as an automobile.

(Prior Art) When a conventional vehicle is subjected to a large deceleration G due to sudden braking, the vehicle causes a phenomenon of nose dive, that is, rear lift. In order to prevent this, it has been attempted to increase the damping force of the shock absorber on the rear axle of the vehicle, but this method has the disadvantage of worsening the riding comfort of the vehicle. Further, there is a method for electrically increasing the damping force of the shock absorber when a deceleration G of more than a set value is applied to the vehicle using an acceleration sensor, but this method has the disadvantage of being expensive. Furthermore, there is a method for electrically increasing the damping force of the shock absorber depending on the position where the brake is depressed, but the stiffness method has the drawback of causing a deterioration in riding comfort when the brake is depressed on a downhill slope or the like.

Additionally, there is Japanese Unexamined Patent Publication No. 1981-81809 as a prior document.

(Problems to be solved by the invention) This invention aims to provide a vehicle attitude control device that reliably prevents the nose dive of the vehicle during sudden braking, has a simple structure at low cost, and does not impair ride comfort. Take it as a challenge.

(Means for Solving the Problems) In order to solve the above problems, this invention consists of a ratchet, a wire wound around the shaft of the ratchet with one end fixed, a return spring, a pawl that can be engaged with the ratchet, and a setting value. A winding mechanism consisting of an inertial body that moves a pawl to engage the ratchet when subjected to an acceleration of the above amount is attached to either the vehicle body or the rear axle of the vehicle, and the other end of the wire is connected to either the vehicle body or the rear axle of the vehicle. or the other.

(Operation of the invention) When a deceleration G of less than a set value is applied to the vehicle, the displacement of the inertial body is small and the pawl is pushed up a little, but it is not engaged with the ratchet. However, when the deceleration G exceeds the set value, the displacement of the inertial body is large and the pawl is pushed up greatly and engaged with the ratchet, so the rotation of the ratchet is restrained and the length of the wire extending from the ratchet does not change. Therefore, nose dive of the vehicle body is prevented.

(Description of Embodiments) This invention will be explained below with reference to drawings showing embodiments. First, the winding mechanism will be explained with reference to FIGS. 4 and 5. The winding mechanism 1 includes a ratchet 11, a wire 13 wound around the shaft 12 of the ratchet 11 with one end fixed, a return coil spring 14 attached to the shaft 12,
A first pawl 15, a second pawl that can be engaged with the ratchet 11.
and a pendulum (inertial body) 17 that moves the pawls 15 and 16 to engage the ratchet 11 when receiving an acceleration exceeding a set value. When a deceleration G of less than a set value is applied to the winding mechanism 1, the displacement of the pendulum 17 is small and the first pawl 15 is pushed up a little, but it does not engage the ratchet 11. However, when the deceleration G exceeds the set value, the displacement of the pendulum 17 is large and the first pawl 15 is pushed up greatly and engaged with the ratchet 11, so that the rotation of the ratchet is restricted. The withdrawal of the wire 13 wound around the shaft 12 of the ratchet 11 is therefore locked. If the tip of the first pawl 15 hits the tip 11a of the ratchet 11 and is thrown off without engaging with the ratchet 11, the second pawl 16 is lifted by the rise of the protrusion 15a at the rear end of the first pawl 15. is engaged with the ratchet 11 to ensure locking. Note that this winding mechanism 1 is adjusted so that it does not operate solely due to gravity on a slope or the like.

In this embodiment, the winding mechanism 1 described above is attached to each of the right and left sides of the vehicle body 2, and both ends of the wire 13 are attached to hooks 4 attached to the rear axle 3.

With the above configuration, the deceleration G of the vehicle body 2 is greater than the set value.
When the wire 13 acts, the wire 13 is locked and the nose dive of the vehicle body 2 is prevented. Note that even if the winding mechanism 1 is attached to the rear axle 3 and the other end of the wire 13 is attached to the vehicle body 2, the effect is the same.

(Effects of the invention) Although the invention has an extremely simple structure, it has the effect of reliably preventing nose dive during sudden braking of the vehicle without impairing ride comfort. Furthermore, the structure is simple and therefore inexpensive. Furthermore, if this device is attached to the four wheels of a vehicle to sense lateral acceleration, roll control becomes possible.

[Brief explanation of the drawing]

FIG. 1 shows an example of how one embodiment is mounted on a vehicle. FIG. 2 shows a left side view of FIG. FIG. 3 shows a rear view of FIG. 1. FIG. 4 shows a perspective view of the winding mechanism. FIG. 5 is a diagram showing the operating state of FIG. 4. 1... Winding mechanism, 2... Vehicle body, 3... Rear axle,
11...Ratchet, 12...Ratchet axis,
13...Wire, 14...Returning coil spring, 1
5, 16...nail, 17...pendulum (inertial body).

Claims (1)

[Scope of utility model registration request] A ratchet, a wire wrapped around the shaft of the ratchet with one end fixed, a coiled spring for return, a claw that can engage the ratchet, and an inertial body that moves the claw to engage the ratchet when it receives acceleration exceeding a set value. 1. A vehicle attitude control device, characterized in that a winding mechanism is attached to either the vehicle body or the rear axle of the vehicle, and the other end of the wire is attached to the other of the vehicle body or the rear axle of the vehicle.