JP2005193776A - Vehicular tire blowout device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular tire blowout device in which close attention need not be paid by preventing a hand from being brought into contact with a projection part for blowout of a tire or a hand from being hooked by the projection part in advance when the tire or peripheral parts of the tire are changed. <P>SOLUTION: The vehicular tire blowout device 19 has a projection part 20 which is brought into contact with a circumferential surface of a front tire 7b of a front wheel 7 to blow out the front tire 7b when an impact load toward the center side in the longitudinal direction is input in a front end of a vehicle body 1, and the front end of the vehicle body 1 is collapsed and deformed backwardly on the vehicle body 1. A cover 21 to cover the projection part 20 is provided, the cover 21 is brought into contact with the front tire 7b and collapsed and deformed when the vehicle body 1 is collapsed and deformed, and the projection part 20 is brought into contact with the tire to blow out the tire. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle tire puncture device for puncturing a wheel tire when a front end portion or a rear end portion of a vehicle body is crushed and deformed by an impact load inputted to a front end portion or a rear end portion of the vehicle body. is there.

  As this type of tire puncture device, there is known a tire puncture projection provided on a vehicle body that faces the front end portion or the rear end portion of the circumferential surface of the tire with a gap (see, for example, Patent Document 1). ).

In this tire puncture device, when an impact load directed rearward or forward is input to the front end portion or the rear end portion of the vehicle body, and the front portion or the rear portion of the vehicle body is crushed and deformed rearward or forward, the protrusions are The tire is punctured by contacting the tire peripheral surface of the rear wheel.
JP-A-10-297399

  However, in the above-described tire puncture device, since the sharp protrusion is exposed and attached to the vehicle body, there is a risk that the hand may touch the protrusion or be caught by the protrusion when replacing the tire or tire peripheral parts. Because of this, it was necessary to pay close attention.

  Therefore, it is necessary to pay close attention to this invention by preventing the hand from coming into contact with the tire puncture protrusion or being caught by the protrusion when replacing the tire or tire peripheral parts. It is an object of the present invention to provide a tire puncture device for a vehicle without any problem.

  In order to achieve this object, according to the first aspect of the present invention, an impact load directed to the front-rear direction center side is input to the front-rear direction end portion of the vehicle body, and the front-rear direction end portion of the vehicle body is crushed and deformed toward the front-rear direction center side. In a vehicle tire puncture device in which a protrusion that contacts the circumferential surface of a wheel tire and punctures the tire is provided on the vehicle body, a cover that covers the protrusion is provided, and the cover is It is provided so that it can be punctured by contacting the tire and contacting the tire when the vehicle body is crushed and deformed.

  According to this configuration, it is possible to prevent the hand from coming into contact with the tire puncture protrusion or being caught by the protrusion when the tire or the tire peripheral component is replaced.

  In addition, the tire can be punctured by the protrusions because the cover comes into contact with the tire and deforms when the front and rear end of the vehicle body is deformed.

  Even if the wheel punctures and the wheel moves to the center side in the longitudinal direction of the vehicle body due to the crushing deformation of the longitudinal end portion of the vehicle body, the wheel is brought into the vehicle body by a dimension twice the thickness in the radial direction of the tire. No deformation force is applied. As a result, the allowance for crushing at the end portion in the front-rear direction of the vehicle body can be increased by a size that is twice the thickness in the radial direction of the tire.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In FIGS. 1A and 1B, 1 is a vehicle body of an automobile (vehicle), and 2 is a front pillar of the vehicle body 1. In FIG. 1A, 3 is a front fender of the vehicle body 1, 4 is a rear fender of the vehicle body 1, 5 is a front wheel arrangement space on the front side of the vehicle body 1, and 6 is a rear wheel arrangement on the rear side of the vehicle body 1. An installation space 7 is a front wheel arranged in the front wheel arrangement space 5, and 8 is a rear wheel arranged in the rear wheel arrangement space 6.

  And the front wheel 7 has the wheel main body 7a and the front tire 7b with which the wheel main body 7a was mounted | worn. The rear wheel 8 has a wheel body 8a and a rear tire 8b attached to the wheel body 8a.

  Further, in FIG. 1B, 9 is a compartment of the vehicle body 1, 10 is a floor panel of the compartment 9, 11 is a side sill fixed to the lower end portion of the front pillar 2 and the side portion of the floor panel 10, and 12 is A cowl top of the vehicle body 1, 13 is a dash panel welded to the cowl top 12 and the floor panel 10, and 14 is an engine room at the front of the vehicle body 1.

  Note that both side portions of the dash panel 13 are fixed to the front pillar 2 by welding. As shown in FIG. 3, the lower end portion of the front pillar 2 and the side portion of the dash panel 13 face the front wheel arrangement space 5 and face the front tire 7b.

  Further, hood ridge panels 15 and 15 are disposed on both sides of the engine room 14 as shown in FIG. 1B, and the front side as shown in FIG. 1B and FIG. Members 16 are provided. In FIG.1 (b), 17 is a wheel housing and 18 is a strut housing.

  A tire puncture device 19 extending in the vehicle width direction is attached to the side of the dash panel 13 as shown in FIGS. 1B, 2 and 3.

  As shown in FIGS. 4 to 6, the tire puncture device 19 has a knife-edge-shaped protrusion 20 having a triangular side surface and an acute tip, and a metal plate cover 21 that covers the protrusion 20. .

  As shown in FIG. 5, the cover 21 has an upper wall 21a, a rear wall 21b, and a bottom wall 21c, an upper front wall (upper flange) 21d that protrudes downward from the front end of the upper wall 21a, and a bottom wall 21c. A lower front wall (lower flange) 21e that protrudes upward from the front end of the front end.

  Thereby, the cover 21 is formed in a substantially inverted C shape from the upper wall 21a, the rear wall 21b, the bottom wall 21c, the upper front wall 21d, and the lower front wall 21e in FIG. Then, the rear wall 21 b is fixed to the side portion of the dash panel 13.

  The cover 21 has an outer wall 21 f that closes the outer side end of the vehicle body 1. In the outer wall 21f, the front end upper part 21f1 and the front end lower part 21f2 shown in FIG. 7 are welded and fixed to the upper front wall 21d and the lower front wall 21e, respectively.

  Moreover, the protrusion 20 is disposed in the space 22 in the cover 21 as shown in FIG. 5, and the base end is welded and fixed to the intermediate portion in the vertical direction of the rear wall 21b. And the knife edge part 20a of the front-end | tip of the projection part 20 is made to face the slit-shaped space 23 between the upper front wall 21d of the cover 21, and the lower front wall 21e, as shown in FIG. 4, FIG. .

  Further, a folding induction portion 24 is formed at both ends of the upper wall 21a in the vehicle width direction, a folding induction portion 25 is formed at both ends of the bottom wall 21c in the vehicle width direction, and a folding induction portion is formed at the upper and lower portions of the outer wall 21f. The part is formed.

  The folding inducing portion 24 includes a center bead 24a extending from the front-rear direction center of the vehicle width direction edge of the upper wall 21a toward the vehicle width direction center of the upper wall 21a, a front portion of the vehicle width direction edge of the upper wall 21a, and Inclined beads 24b, 24c extend from the rear to the center side end 24a 'in the vehicle width direction of the center bead 24a.

  Further, the folding inducing portion 25 includes a center bead 25a extending from the center in the front-rear direction of the edge in the vehicle width direction of the bottom wall 21c toward the center in the vehicle width direction of the bottom wall 21c, and the front of the edge in the vehicle width direction of the bottom wall 21c. Inclined beads 25b, 25c extending from the rear and rear portions to the vehicle width direction center side end 25a 'of the central bead 25a.

  Further, the folding inducing portion 26 includes a center bead 26a extending from the center in the front-rear direction of the edge in the vehicle width direction of the outer wall 21f toward the center in the vertical direction of the outer wall 21f, and a front portion of the edge in the vehicle width direction of the outer wall 21f. In addition, there are inclined beads 26b and 26c extending from the rear portion to the center portion 26a 'in the vertical direction of the central bead 26a.

  Each of the three beads 24a to 24c, 25a to 25c, and 26a to 26c is formed by bulging outward (outward) from the space 22 in the cover 21 as shown in FIG. .

  Next, the operation of the vehicle tire puncture device 19 having such a configuration will be described.

In such a configuration, since the knife edge-shaped protrusion 20 of the tire puncture device 19 is covered with the cover 21, the operator's hand protrudes when the front wheel 7 and its surrounding parts are replaced. Contact with or catching on the portion 20 is prevented in advance. As a result, it is not necessary to pay close attention to the tire puncture device 19 when exchanging the front wheel 7 and its surrounding parts. In the state of FIG. 9A, FIG. An impact load to the rear of the vehicle body is input to the front end of the vehicle body 1 shown, and the front end portion 16a side of the front side member 16 starts to be crushed toward the rear of the vehicle body 1 due to the impact load, and the front end 16b of the front side member 16 is moved rearward. When moved, the front wheel 7 is moved rearwardly from the position indicated by the broken line to the position indicated by the solid line as shown in FIG. 7 b comes into contact with the front surface of the cover 21 of the tire puncture device 19.

  Thereafter, when the front side member 16 is further crushed rearward, the front wheel 7 is further moved rearward, and the cover 21 is crushed and deformed by the front tire 7b as shown in FIG. 9C.

  That is, the upper wall 21a is bent upward from the portion along the central bead 24a by the action of the folding inducing portion 24 of FIGS. 4 and 6, and bent upward as shown in FIGS. On the other hand, the bottom wall 21c is bent downward from the portion along the central bead 25a by the action of the folding induction portion 25 of FIGS. 4 and 6, and bent downward as shown in FIGS. In addition, at the same time, the outer wall 21f is bent outward from the portion along the central bead 26a by the action of the folding induction portion 26 of FIGS. 4 and 6, and bent outward as shown in FIG.

  Due to the crushing deformation of the cover 21, the front end of the knife edge-shaped protrusion 20, that is, the knife edge portion 20 a bites into the front tire 7 b and punctures the front tire 7 b as shown in FIG.

  As a result, even if the front wheel 7 moves rearward by the dimension obtained by adding the front and rear dimensions a and b of the front tire 7b (that is, twice the thickness in the radial direction of the front tire 7b), The dash panel 13 is not moved rearward by the front wheel 7 due to the rearward movement. Therefore, the front side member 16 is deformed rearward by the dimension obtained by adding the dimensions a and b, and the impact load input from the front side of the vehicle body 1 can be sufficiently absorbed.

  Moreover, after the front tire 7b is punctured, the protrusion 20 and the cover 21 are further deformed rearward and crushed to absorb a part of the impact load, so that the impact load can be absorbed more effectively. The tire puncture device 19 having such a configuration can also be applied to the rear wheel 8.

  As described above, in the vehicle tire puncture device 19 according to the embodiment of the present invention, an impact load toward the center in the front-rear direction is input to the front-rear direction end of the vehicle body 1 (the front end or the rear end of the vehicle 1). When the front-rear end of the vehicle body 1 is crushed and deformed toward the center in the front-rear direction, it comes into contact with the peripheral surface of the tire (front tire 7b or rear tire 8b) of the wheel (front wheel 7 or rear wheel 8). The vehicle body 1 has a protrusion 20 that punctures the tire (front tire 7b or rear tire 8b). In addition, a cover 21 is provided to cover the protruding portion 20, and the cover 21 contacts the tire (the front tire 7 b or the rear tire 8 b) when the vehicle body 1 is crushed and deformed to be crushed and deformed. Can be punctured by contacting the tire.

According to this configuration, it is possible to prevent the hand from coming into contact with the tire puncture projection 20 or being caught by the projection 20 when exchanging the tire or tire peripheral components, so that safety is improved. As a result, it is not necessary to pay close attention to the tire puncture device 19 when exchanging the wheel and its surrounding parts. Moreover, the cover 21 is deformed when the longitudinal end portion of the vehicle body 1 is deformed. The tire (the front tire 7b or the rear tire 8b) can be punctured by the protrusion 20 by contacting and deforming the tire (the front tire 7b or the rear tire 8b).

  Even if the wheel (front wheel 7 or rear wheel 8) moves to the center in the front-rear direction of the vehicle body 1 due to the deformation of the end of the vehicle body 1 in the front-rear direction due to the puncture of the tire (front tire 7b or rear tire 8b). The wheel (front wheel 7 or rear wheel 8) does not exert a deformation force on the vehicle body 1 by a dimension twice the radial thickness of the tire (front tire 7b or rear tire 8b). As a result, the allowance for crushing of the end portion in the front-rear direction of the vehicle body 1 can be increased by a size that is twice the radial thickness of the tire (front tire 7b or rear tire 8b).

  Therefore, when the wheel is the front wheel 7, the crushing margin of the front end portion of the vehicle body 1 can be increased by a dimension that is twice the radial thickness of the front tire 7 b, so that the energy of the impact load input from the front end of the vehicle body 1 As a result, the probability that the dash panel 13 is deformed to the passenger compartment side can be further reduced.

  The front-rear direction end of the vehicle body 1 is a front end portion or a rear end portion of the vehicle body 1. Further, since the front-rear direction center side of the vehicle body 1 is the vehicle compartment 9 side, when an impact load directed rearward or forward is input to the front end portion or the rear end portion of the vehicle body 1, the front portion or the rear portion of the vehicle body 1 is input. Will be crushed and deformed backward or forward.

  Further, the cover 21 of the vehicle tire puncture device 19 according to the embodiment of the present invention is in contact with the tire (the front tire 7b or the rear tire 8b) when the vehicle body 1 is crushed and deformed so as to be crushed and deformed. It is formed in a shape that can absorb part of the load.

  According to this configuration, after the tire (the front tire 7b or the rear tire 8b) is punctured, the protrusion 20 and the cover 21 are further deformed and crushed to absorb a part of the impact load. Can absorb shock load.

  In the embodiment described above, an example in which the cover 21 is formed from a metal plate is shown. However, the cover 21 is not necessarily a metal plate. For example, you may form from a synthetic resin, rubber | gum, etc.

  Moreover, although the cross-sectional shape of the cover 21 is formed in reverse C shape (or C shape), it is not necessarily limited to this shape. For example, the upper front wall 21d and the lower front wall 21e of the cover 21 may be omitted, and the cross-sectional shape of the cover 21 may be formed in a U shape.

  Furthermore, in the above-described embodiment, one side portion of the tire puncture device 19 is configured to correspond to approximately half of the peripheral surface of the front tire 7b, but the configuration is not necessarily limited thereto. For example, the tire puncture device 19 can be made to face the entire width direction of the peripheral surface of the front tire 7b.

(A) is a perspective view of a vehicle provided with a tire puncture device according to the present invention, and (b) is a schematic perspective view showing a framework of a vehicle body front portion of the vehicle of (a). It is a schematic perspective view which shows the relationship between the schematic structure of the vehicle body front part of FIG.1 (b), and a tire puncture apparatus. It is a schematic plan view which shows the relationship between the front tire of Fig.1 (a), and a tire puncture apparatus. FIG. 4 is an enlarged perspective view of the tire puncture device shown in FIGS. 1B, 2, and 3. It is sectional drawing which follows the A1-A1 line | wire of FIG. It is a disassembled perspective view of the tire puncture apparatus shown in FIG. It is a partial side view of the cover of FIG. It is explanatory drawing of the bend | folding induction bead of the cover of FIG. (A)-(d) is an effect explanatory view of a tire puncture device. FIG. 10 is an enlarged perspective view of a deformed state of the cover of the tire puncture device in FIG. It is sectional drawing which follows the A2-A2 line | wire of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Car body 7 ... Front wheel 7b ... Front tire (tire)
8 ... Rear wheel 8b ... Rear tire (tire)
19 ... Tire puncture device 20 ... Projection 21 ... Cover

Claims (2)

When an impact load directed to the front-rear direction center side is input to the front-rear direction end portion of the vehicle body and the front-rear direction end portion of the vehicle body is crushed and deformed to the front-rear direction center side, In a vehicle tire puncture device in which a protrusion for puncturing a tire is provided on the vehicle body,
A cover for covering the protruding portion is provided, and the cover is provided so as to be crushed and deformed by contacting the tire when the vehicle body is deformed to be crushed, and the protruding portion is brought into contact with the tire to be punctured. A tire puncture device for a vehicle. The vehicle according to claim 1, wherein the cover is formed in a shape capable of absorbing a part of the impact load when the cover is deformed by contact with the tire when the vehicle body is deformed. Tire puncture device.

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