JPS596174A - Hood for car - Google Patents

Abstract

PURPOSE:To prevent contact of a hood to a chassis when the hood is closed and soften the impact and suppress generation of the accident with the dead and the injured, by the organic linking between a hood hinge link, hood damper, and a hood lock striker. CONSTITUTION:When a collision occurs, a load is transmitted to the ring part 11c of a hood hinge link 11, absorbed by an intermediate body 18 through a hood-side hinge pin. Said hinge link 11 is turned in the direction of arrow (b) around a chassis-side hinge pin 12 by the weight over a prescribed value, because of the presence of the hinge pin 12, and the long lever part 11b of the hood hinge link 11 pushes-up the rear edge part 14a of a hood 14 obliquely upward, revolving the ring part 11c through the peripheral part of the intermediate part. Therefore, the hood 14 performs displacement with its rear edge part 14a set upwardly, retreating obliquely, and the impact energy can be absorbed through the above-mentioned retreat.

Description

[Detailed description of the invention]

The present invention relates to an automobile hood equipped with a mechanism for reducing injuries to pedestrians when an automobile collides with them. An example of the structure of an automobile hood is shown in FIG. 1 in the figure is the hood damper, and figure 2 ζ
As shown separately, a threaded portion 3 is provided on the periphery and is integrally molded with an elastic body such as rubber, and the hood ridge q
The screw portion 3 is fitted into a hole 5 provided at a predetermined portion of the screw portion 3 by adjusting the degree of protrusion. 6.6 is the hood hinge link, which is hook-shaped. One end is fixed to the outer surface of the rear end of the hood 2, and the other end is pivotally connected to the vehicle body, and this pivot allows the hood to be opened and closed freely. 8 is food lock striker＼
Yes, installed on the radiator core 1-9. It is provided to engage with a lock ratchet (not shown) to fix the hood 2 in the closed state. In this automobile hood structure, the purpose of installing the hood damper I is to prevent the hood 2 from coming into contact with the vehicle body when it is closed, and to absorb shock. In other words, the amount of deflection of the hood damper I is set to about 3 to 41, and it is protruded and fixed in consideration of the amount of deflection, and by contracting when the hood comes into contact with it, it absorbs the impact energy when the hood is closed. be. Therefore, when the hood 2 is closed, the damper I is in a contracted state by absorbing the energy at the time of closing, and if any impact is applied to the top surface of the hood from L, it will absorb this. I can't. By the way, as shown in FIG. 3, when the automobile 7 collides with the pedestrian M at the tip of the hood 2, the upper half of the body is pushed forward by the automobile, but the lower half of the body is not pushed.
was scooped up onto the boat by Hood 2, and fell with his head facing towards Hood 2, receiving a second impact. In this situation, if the hood 2 had a function to absorb the second impact when the head or the like hits the ground, it would be possible to alleviate the impact, but as mentioned above, the conventional hood damper I The purpose of this is to absorb shock when the hood is open, and since it has no shock absorbing power when the hood is closed, the primary impact of a car collision can cause damage to the head, etc. in the event of a fall. In some cases, the second impact caused by the vehicle colliding with the hood 2 is aggravated, resulting in death or injury. On the other hand, since the hood hinge link 6 is constructed considering only the ability to open and close the hood q,
．． There is no countermeasure against the second impact; the first impact is only alleviated by its deformation. Since the hood lock striker 8 is installed for the purpose of maintaining the hood 2 in a closed state, it is similar to the hood hinge link 6 in that the first hood lock striker 8 is provided with the hood lock striker 8 for the purpose of keeping the hood 2 closed. There is no countermeasure against the second guard, and its transformation absorbs energy from the first attack.
It's not small. The present invention alleviates injuries caused by the first impact and injuries caused by the second impact that is added to the injuries, and uses the hood hinge links and hood dampers, which are essential components of the hood. , hood lock striker, and the hood lock striker, which are organically linked to reduce and prevent damage, and rotate when a load of more than a predetermined value is applied to the rear of the heavy body that rests on the front end of the hood, pushing up the rear end of the hood. A hood hinge link to be displaced, a heavy body (which can be rotated at one end), a hood damper (having an arm that pushes up and displaces the front end of the hood by rotation), Freedom of the first arm due to Koyoru Hood's retirement: 1
@ + Touch and rotate the arm. It has a protrusion provided on the surface of the hood, and a striker rond having an allowable diameter of 1 for the rear and dimensional movement of the hood. l-ru self-help 1
By providing City ITJ Food, we will achieve the above-mentioned 1. @2
The purpose of this invention is to reduce the impact of accidents resulting in death or injury.The structure of the present invention will be explained below according to an embodiment shown in the drawings. , l] is the hood hinge link,
It is hook-shaped and consists of a short rod portion IIa and a long rod portion 11b with a longer diameter than the short rod portion 13a.

[2 by car body side panel 1
3, and the blade length rod part 11b is provided with a ring part 11c at its end. ing. Reference numeral 14 denotes a hood, and a bracket 16 having a hood-side hinge pin 15 implanted on its side surface is fixed to the back surface of the rear end portion 14a by bolts 17 and 17ζ. Reference numeral 1B denotes an intervening body, which is made of an elastic material such as rubber, and is fitted between the ring portion 11c of the 7-do hinge link 1 and the hood side hinge bin 15. In other words, the long rod portion iib of the hood hinge link 11 connects the bracket 1 provided on the hood 14 via the intervening body 18 with the ring portion 11C provided at the end thereof.
It is pivoted to 6. Next, the structure of adding a hood damper will be explained based on the same figure and FIG. A bolt part 23 is provided at the tip thereof, and a bolt part 24 and a nut 25 are attached to the bolt part 2. It is a cylindrical body having a circumferentially protruding tongue edge 27 at one end peripheral edge, into which the center shaft 21 is fitted with a hole 281, and the bolt portion 2
The end surface is in pressure contact with the waratsuya 24 attached to 3. Reference numeral 29 denotes an outer cylinder, which is a cylindrical body, into which the outer peripheral part (the inner peripheral surface of the tube) is fitted with pressure contact 90,
Furthermore, the peripheral edge 31 at one end is pressed against the tongue edge 27 of the push The outer cylinder 2
9, and a damper rubber X made of an elastic body is provided at the tip. In this embodiment having the above configuration, the hood ridge q is installed at a predetermined position [the outer cylinder in which the arm 33 is implanted] by fixing the hood ridge q at a predetermined position. 29
and center shaft 2).
By screwing the bolt part 23 of the bolt part 24 with the nut 25, the part/year 24 is fixed, and at this time, the rotation position of the arm 23 is set in the direction of the front end of the hood 14. The position where the back surface contacts the damper rubber 34 when closed (see Fig. 6)

[Install everything as shown.] Further, in FIG. 4, 4θ is a protrusion, which is provided by protruding the hood inner panel 14' in one direction of the inner opening, and its position is near the front of the abutting part of the damper rubber 34. It is. Next, in FIG. 7, 50 is a hood lock striker, which is fixed inside the center of the tip of the hood 14.
The striker rond 51 has a long diameter in the front to enable rearward movement of the hood, and a front upper and lower diameter to enable upward movement after the hood 14 has moved backward to some extent. It has a large diameter. Hood hinge link 11 according to the above configuration. )-Doda/Paka, protrusion 40. Food Lock Striker-50 (
In this case, when the hood 14 is normally closed, the damper rubber I is brought into contact with the back surface of the hood 14, and due to the elasticity of the damper rubber and the torsion of the hood 14,
Shock absorption occurs when the hood is closed. On the other hand, in the hood hinge link 11, the normal opening and closing of the 7-door 14 involves rotating the hood-side hinge pin 15 at the center of the intervening body 18 and moving the rear end part one turn in the direction of arrow (A). conduct. In the event of a collision as shown in Fig. 3 (7), the 1X bow will first be exposed to the hinge bin 15 on the hood side.
17, the long rod part 11' of the hood hinge link 10
b, that is, to the ring portion 11C. At that time, since an elastic intervening body 18 is provided between the ring IT C and the hood-side hinge pin 15, the collision energy is absorbed by the intervening body 18 (as described above), and the impact energy is absorbed by the ring part 11 c In this way, the length tF f41 of the 7-hinged link 1]
st] b When a load is applied to the tip of the hood from the hood tip side,
The hinge link 11 is rotatable by the vehicle body side hinge pier 12 under a load of a predetermined value or more, and the load is applied to the tip of the long hitting part 11a located above the part of the vehicle body hinge pin 12 which is the pivot point of the short rod part 11b. , the hood hinge link /l rotates in the direction of arrow (0) about the vehicle body side hinge pin [2, and accordingly, the long rod portion 11b of the hood hinge link 11
The rear end 14a of the hood 14 is pushed diagonally upward while rotating the hood 14 around the intervening body. As a result hood 14
The rear end portion 14b is moved upwardly and displaced obliquely backward, and the energy of the primary impact is absorbed during this movement. On the front 91M side of the hood, as the hood 14 retreats, the protrusion 40 provided on the rear surface of the hood 14 still contacts the tamper rubber 34 at the tip of the arm 33 of the hood damper 20. , a rotational torque is applied to the arm 33. When a torque of a certain value or more is applied, the % and the center axis 21, the X and the inner circumferential surface of the outer cylinder, and the
, 7 langes n and one end peripheral edge of the outer cylinder 31. Tongue edge i and outer cylinder f
The arm η rotates toward the rear of the vehicle body while creating friction on each contact surface of the hood peripheral edge 3], and at this time, the friction at each portion absorbs the impact energy from the tip of the hood toward the rear of the vehicle body. ],ru. In other words, the relaxation of the first elimination = energy absorption is 7
- This is done by both dohi/siri/ri11 and food tampering. Next, we will explain the second shock-reducing effect. As mentioned above, the hood hinge link 11 rotates as the hood 14 moves toward the rear of the vehicle body. a Ci, the hood is pushed diagonally upwards.On the other hand, the hood damper 2o also rotates as described above, pushing the hood front end 1.4b upward.For this reason, the hood 1.4H is pushed up diagonally upward. As shown, the rear end is connected by the hood hinge link 11, and the front end is connected by the hood hinge link 11.
- It is pushed up by the tambour 20 and is in a state of floating above the vehicle body. As mentioned above, the pedestrian who fell down with the back of the head facing towards the vehicle body rests on the hood 14 which is pushed up by the hood hinge link 11 and the hood damper 201. As a result of this second impact 1, the arm 33 of the hood damper 20 that is pushing up the hood 14 is tilted slightly toward the front of the vehicle body from the vertical line, as shown in FIG. When the vehicle is in the state of The arm sword rotates to the front side of the single body while creating a friction between 22 and the outer cylinder one end station @ part 3), the tongue edge zH and the outer cylinder other end peripheral part 31. Each of the above-mentioned surfaces (Koriru F@Suki) absorbs the ejected energy applied to the pedestrian due to the collision with the C1 hood 14, alleviating the secondary impact on the pedestrian and reducing the amount of injury caused. 1 can be heard.Also food 1
4 is lifted from the vehicle body, the pair of hood hinge links 11. With the addition of the hood damper, the hood 1
Energy absorption can also be achieved by bending 4 itself. Incidentally, the retreat of the hood 14 and the displacement of the F force are caused by the striker rod 5I of the hood lock striker 50, which is engaged with the lock ratchet 52, moving toward the vehicle (A=', f4j[direction]), as shown in FIG. Since it is a long shuttle and the upper and lower diameters are large in the front r, the hood 14 (I hood lock striker) is used to reduce the displacement E and t 11.
This can be done without any hassle. FIG. 9 shows another embodiment of the invention. That is, in this embodiment, the protrusion 40' is formed separately, and the hood 171 is fixed to the hood inner panel 14' with bolts 9 (the hood ridge 171 is of the conventional type). A hood damper I is provided.The function of the protrusion 40' in this embodiment is the same as in the previous embodiment, but the middle r5g suction 11!2 when the hood 14 is closed is different from that of the conventional hood damper. 1 (Since this is done, the hood damper 20 exclusively performs the function of absorbing the first and second shocks mentioned above. to n [rotated by a load greater than a fixed value,
A hood hinge link that presses the temporary end of the hood and moves the beard, and one end of the hood is attached to the vehicle body for rotation.
11. A hood damper having an arm that pushes up and displaces the front end of the hood at its free end by rotation 11, and when the hood retreats due to the load, it comes into contact with the free end of the arm and rotates the arm. The hood is equipped with a protrusion on the back of the hood and a striker rod with a diameter Wf W that moves the hood backwards and upwards, making it possible for the hood to move backwards and upwardly. In this case, due to the rotation of the hood hinge link and its elasticity, and the rotational friction of the hood damper arm toward the rear of the heavy body,
By absorbing energy, it is possible to reduce injuries to pedestrians by 1 yen by alleviating the primary impact. Furthermore, in the case where the pedestrian falls onto the top surface of the hood after the collision, the hood is in a state of being raised above the vehicle body due to the above-mentioned retreat, so the hood itself is deflected, causing the ff
? In addition, energy is absorbed by the rotational friction of the arm of the hood damper toward the front of the vehicle body, and the second impact caused by the collision of the 91I part with the hood when a pedestrian falls down can be alleviated. This also makes it possible to reduce injuries caused by this second impact.

[Brief explanation of the drawing]

No. 11 is a perspective view showing an example of the conventional hood fhi 4. Fig. 2 is an explanatory diagram showing the installation status of the L1 conventional hood tamper. Fig. 3 is a perspective view showing an example of the conventional hood fhi 4. Condition 9
1i, p, Shikoku, FIG. 4 is a theory showing one embodiment of the present invention, Shikoku, FIG. Figure 7 is a perspective view showing the mounting state of the hoodlock striker, Figure 7 shows the length of the hoodlock striker without showing the example, and Figures 1 and 18 show the installation state of the hood lock striker. FIG. 9 is an explanatory diagram showing an embodiment of the present invention. 11 Hood hinge link, 14... Hood, 16.
, Frakenote, 18. Intermediate, 20 Food Tampa,
2]・Central axis, %・、butsu/yu, 29・・outer cylinder, 33・
・Arm, 34...Damp rubber, 40...Protrusion,
50・Food lock striker-151... Striker rod. Procedural amendment (voluntary) 18/1982 2711 Patent application No. 112671. No. 2, Name of the invention Automobile hood 3 Relationship with the tenant farmer Applicant (899) Nissan Motor Co., Ltd. 4, Agent 104 Higashijo; Association building 5, subject of amendment 6, content of amendment (1) In the third line of page 4 of the specification, the text ``...upper body'' is corrected to ``...lower body.'' (2) On the fourth line of the same page, it says “lower body...”
...Upper body..." I corrected myself. (3) Details 14! Page 11, lines 7 to 9 “...
This is done by rotating the hood side hinge bin 13 at the center of the intervening body/g and rotating the rear end in the direction of the arrow (A). '', it is corrected to read, ``...do this with the two hinge bins on the vehicle body as the center of rotation.''that's all

Claims (1)

[Claims] (1) A predetermined load or more is applied to the rear of the vehicle body against the front end of the hood (the hood hinge link rotates and pushes up the rear end of the hood, and
A hood tamper has an arm which is movably mounted and whose free end pushes up and displaces the front end of the hood by rotation, and when the hood retreats due to the load, it comes into contact with the free end of the arm (7 arms are rotated). This automobile hood is provided with a protrusion &B provided on the back side of the hood, and a striker W/B for controlling the rear and upward movement diameter of the hood.