JP2012106622A - Vehicle door structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vehicle door structure that can improve design flexibility as a door structure while securing required energy absorbing ability.SOLUTION: The vehicle door structure 10 includes: a side door body 14; a door trim 16 that covers the side door body 14 from the inside of the vehicle; and a door speaker 22 that is provided in a part overlapping a vehicle seat between the side door body 14 and the door trim 16. The door speaker 22 is configured to double as a function for issuing sound to a vehicle cabin and a function for absorbing energy of side collision that is input in the side door body 14.

Description

  The present invention relates to a vehicle door structure applied to a vehicle such as an automobile.

  A technique is known in which a shock absorbing pad for absorbing side collision energy is provided on the back surface of the side door interior lining at a position corresponding to the occupant's waist (see, for example, Patent Document 1).

JP 2006-69347 A

  However, in the configuration in which the single-function shock absorbing pad is provided, there is room for improvement from the viewpoint of improving the degree of freedom in designing the door.

  An object of the present invention is to obtain a vehicle door structure that can improve the degree of freedom of design as a door structure while ensuring required energy absorption performance in consideration of the above facts.

  The vehicle door structure according to claim 1 is a vehicle door structure for occupant seating in a side view between a side door main body, a door trim that covers the side door main body from a vehicle interior side, and the side door main body and the door trim. A speaker provided at a portion overlapping the seat and configured to perform a function of emitting sound toward the passenger compartment and a function of absorbing energy of a side collision input to the side door body; ing.

  In the vehicle door structure according to the first aspect, when a colliding body collides with the side door body from the side, a part of the collision energy is absorbed by deformation or destruction of the speaker. Thereby, required energy absorption is achieved. Here, since the speaker is disposed so as to function as an energy absorbing member, the sound generation function as the speaker and the energy absorbing function as the energy absorbing member are integrated, and design restrictions as the door structure are reduced.

  Thus, in the vehicle door structure according to the first aspect, the degree of freedom in designing the door structure can be improved while ensuring the required energy absorption performance.

  A vehicle door structure according to a second aspect of the present invention is the vehicle door structure according to the first aspect, wherein the speaker is fixed to the door trim.

  In the vehicle door structure according to the second aspect, since the speaker is fixed to the door trim, the energy of impact input to the side door main body can be effectively absorbed by the speaker.

  A vehicle door structure according to a third aspect of the present invention is the vehicle door structure according to the first or second aspect, wherein the speaker is a rear portion in the vehicle front-rear direction between the side door body and the door trim. And it is arrange | positioned in the lower part of the vehicle up-down direction, and the accommodating part which accommodates in-vehicle goods is provided in the vehicle front-back direction front side with respect to the said speaker.

  In the vehicle door structure according to claim 3, compared with a configuration in which the speaker and the energy absorbing member are separately provided, a large storage portion is provided in front of the speaker provided in the rear lower portion of the side door main body. it can.

  As described above, the vehicle door structure according to the present invention has an excellent effect that the degree of freedom in designing the door structure can be improved while ensuring the required energy absorption performance.

It is sectional drawing which followed the 1-1 line | wire of FIG. 3 which shows the principal part of the vehicle door structure which concerns on the 1st Embodiment of this invention. (A)-(C) are the figures which show typically the energy absorption process by the door speaker which comprises the door structure for vehicles which concerns on the 1st Embodiment of this invention. (A) is a side view which shows the side door of the motor vehicle to which the vehicle door structure which concerns on the 1st Embodiment of this invention was applied, (B) is a side view which shows the side door which concerns on a comparative example. It is sectional drawing corresponding to FIG. 1 which shows the principal part of the vehicle door structure which concerns on the 2nd Embodiment of this invention. (A)-(B) are figures which show typically the energy absorption process by the door speaker which comprises the door structure for vehicles which concerns on the 2nd Embodiment of this invention.

  A vehicle side door structure 10 as a vehicle door structure according to a first embodiment of the present invention will be described with reference to FIGS. In addition, arrow FR, arrow UP, arrow IN, and arrow OUT that are appropriately described in each figure are the front direction (traveling direction) of the automobile to which the vehicle side door structure 10 is applied, the upward direction, the inner side in the vehicle width direction, And the outside. In the following description, when using the up / down and front / rear directions, the up / down direction of the vehicle and the front / rear direction of the vehicle front / rear direction are indicated unless otherwise specified.

  FIG. 3A shows a side view of a front side door 12 to which the vehicle side door structure 10 is applied as viewed from the vehicle interior side. FIG. 1 is a cross-sectional view taken along line 1-1 of FIG. As shown in these drawings, the side door 12 includes a side door main body 14 and a door trim 16 that is an interior member that covers the side door main body 14 from the vehicle interior side.

  The side door body 14 is formed as a hollow structure that is flat in the vehicle width direction by joining the peripheral portions of the outer panel 18 and the inner panel 20 by hemming or the like. An impact beam 25 as a reinforcing member is provided on the outer panel 18 side at the lower part in the side door body 14. A space R is formed between the side door main body 14 and the door trim 16.

  In this space R, a door speaker 22 is provided as shown in FIG. As shown in FIG. 3A, the door speaker 22 is disposed in the lower rear portion of the side door 12. That is, the door speaker 22 is disposed at a position overlapping the vehicle seat 24 (a seat cushion frame (not shown)) in a side view. In the configuration in which the vehicle seat 24 slides back and forth, the door speaker 22 overlaps the vehicle seat 24 regardless of the slide position of the vehicle seat 24.

  As shown in FIG. 1, the door speaker 22 includes a speaker box 26, a frame 28, cone paper 34 supported by the frame 28 via an edge 30 and a damper 32, and a voice coil (magnet) that vibrates the cone paper 34. 36) as a main part. The door speaker 22 is configured to generate a sound when the voice coil 36 vibrates the cone paper 34. The speaker box 26 accommodates other components therein.

  In this embodiment, the speaker box 26 includes a back plate 38 that covers the frame 28 from the side opposite to the cone paper 34 side. The back plate 38 is close to the central portion (the portion excluding the peripheral side) of the conical frame 28, and the frame 28 and the back plate 38 on the peripheral wall 40 of the speaker box 26 are affected by a load from the outside in the vehicle width direction. When the portion 40 </ b> A located therebetween is crushed, the frame 28 is configured to press inward in the vehicle width direction. When the frame 28 is deformed (irreversible deformation) or broken by this pressing, the energy required for the deformation or fracture is absorbed. Note that the back plate 38 is configured to be as close to the frame 28 as possible within the range of restrictions for establishing a speaker, and may be configured to contact the frame 28 as long as the requirements as a speaker are satisfied.

  In this embodiment, the door speaker 22 is fixed to the door trim 16. Specifically, the side door main body 14 side in a state where the flange 42 protruding vertically from the periphery of the speaker box 26 is abutted against a plurality of screw bosses 44 protruding outward in the vehicle width direction from the door trim 16. Thus, the door speaker 22 is fixed to the door trim 16 by screwing the screws 46 into the screw bosses 44 respectively.

  In this fixed state, a gap G in the vehicle width direction is formed between the back plate 38 of the door speaker 22 and the inner panel 20 of the side door body 14. The gap G absorbs dimensional errors and assembly errors of the door speaker 22 fixed to the door trim 16. Further, the peripheral portion of the speaker box 26 on the door trim 16 side and the door trim 16 are sealed over the entire periphery with a caulking sponge.

  As shown in FIG. 3A, the side door 12 has a door pocket 48 as a storage unit disposed in front of the door speaker 22. The door pocket 48 has an opening 48A that is long in the front-rear direction, and can accommodate a relatively large vehicle-mounted product such as a map or a book. In the side door 12, a switch base 50 provided with various switches is disposed above the door pocket 48, and an inside handle 52 for opening and closing the side door 12 is disposed above the switch base 50. Has been.

  Next, the operation of the first embodiment will be described.

  In a vehicle in which the vehicle side door structure 10 having the above-described configuration is applied to the side door 12, sound from an in-vehicle audio device, an in-vehicle radio, or the like is emitted from the door speaker 22 into the vehicle interior.

  When a colliding body collides with the side door 12 of this automobile from the side, an impact load F is input from the side door body 14 to the back plate 38 of the speaker box 26 as shown in FIG. Due to this load, the portion 40A of the peripheral wall 40 of the speaker box 26 located between the frame 28 and the back plate 38 is crushed in the vehicle width direction (by axial force), and primary energy absorption is achieved.

  Next, when the portion 40A is crushed, the back plate 38 presses the frame 28 inward in the vehicle width direction while contacting the frame 28 as shown in FIG. When the pressing load exceeds the proof stress of the frame 28, the frame 28 is broken on the peripheral side, and secondary energy absorption is achieved.

  Further, when the door trim 16 comes into contact with the vehicle seat 24 (the seat cushion frame), the peripheral wall 40 is further crushed to achieve the third energy absorption, and the load is transmitted to the vehicle seat 24.

  As described above, in the vehicle side door structure 10, part of the energy of the side collision is absorbed by the destruction of the door speaker 22. Thus, since the door speaker 22 performs the sound generation function as the speaker and the function as the energy absorbing member, in other words, the sound generation function and the energy absorption function are integrated in the door speaker 22. Compared with the structure which performs a function with a different member, it contributes to the improvement of the design freedom of the side door 12. FIG.

  For example, in the side door 100 according to the comparative example shown in FIG. 3B, a speaker 102 that performs a sound generation function is disposed in the front lower part, and an energy absorption pad 104 that performs an energy absorption function is disposed in the rear lower part. Therefore, the layout of the door trim is restricted. In this comparative example, a large storage portion such as the door pocket 48 cannot be provided, and only one small plastic bottle holder 106 is provided between the speaker 102 and the energy absorption pad 104.

  On the other hand, in the vehicle side door structure 10, as described above, the door speaker 22 is arranged at the lower rear portion of the side door 12 to integrate the sound generation function and the energy absorption function. 12 design flexibility is high.

  In the vehicle side door structure 10, since the door speaker 22 is fixed to the door trim 16, the door speaker 22 can ensure required energy absorption performance. That is, since the door speaker 22 is arranged to receive the load from the side door main body 14 without following the side door main body 14, compared with the configuration in which the door speaker 22 is fixed to the inner panel 20, the initial side collision is performed. Energy absorption can be achieved.

  Furthermore, in the vehicle side door structure 10, a large door pocket 48 can be obtained as compared with the side door 100 as described above.

(Second Embodiment)
Next, a second embodiment of the present invention will be described. Note that parts and portions that are basically the same as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  FIG. 4 shows a vehicle side door structure 60 according to a second embodiment of the present invention in a cross section corresponding to FIG. As shown in this figure, the vehicle side door structure 60 is different from the door speaker 22 having the speaker box 26 in that it includes a door speaker 62 having a speaker box 64. This is different from the vehicle side door structure 10.

  The speaker box 64 has ribs 68 that protrude from the back plate 66 toward the peripheral edge of the frame 28. One or more ribs 68 are provided along the periphery of the frame 28 so as to form a continuous or intermittent ring. When the portion 40A located between the frame 28 and the back plate 66 in the peripheral wall 40 of the speaker box 26 is crushed by a load from the outside in the vehicle width direction, the rib 68 presses the peripheral edge of the frame 28 and breaks it. It is configured. The rib 68 is configured to be close to the frame 28 and may be configured to contact the frame 28. Other configurations of the vehicle side door structure 60 are the same as the corresponding configurations of the vehicle side door structure 10.

  Therefore, also by the vehicle side door structure 60 according to the second embodiment, the same effect can be obtained basically by the same operation as the vehicle side door structure 10 according to the first embodiment.

  Supplementally, in the vehicle side door structure 60, when an impact load is input from the side door body 14 to the back plate 66 of the speaker box 26, as shown in FIG. 5A, the frame 28 and the back plate on the peripheral wall 40. The portion 40 </ b> A located between the first and second portions 66 is crushed in the vehicle width direction (by axial force), and primary energy absorption is performed. Next, as shown in FIG. 5 (B), the rib 68 presses the periphery of the frame 28 inward in the vehicle width direction while contacting the periphery of the frame 28. When the pressing load exceeds the proof stress of the frame 28, the frame 28 is broken at the peripheral side where the rib 68 is in contact, and secondary energy absorption is achieved. Thereafter, as in the first embodiment, the peripheral wall 40 is further crushed and the third energy is absorbed, and the load is transmitted to the vehicle seat 24.

  Further, since the vehicle side door structure 60 has a configuration in which the frame 28 is broken by the ribs 68, it is easy to set the break timing and breakage point of the frame 28 and contribute to achieving stable energy absorption.

  In each of the above-described embodiments, an example in which the present invention is applied to the front side door 12 has been described. However, the present invention is not limited to this, and for example, a rear side door (including a slide door) may be used. The present invention may be applied.

  Further, in each of the above-described embodiments, an example in which the large door pocket 48 is disposed in front of the door speakers 22 and 62 has been described. However, the present invention is not limited to this, for example, a plurality of small or medium-sized storages. The parts may be appropriately combined and arranged in front of the door speaker 22 or the like.

  In addition, the present invention can be implemented with various modifications without departing from the gist thereof.

DESCRIPTION OF SYMBOLS 10 Side door structure for vehicles 12 Side door 14 Side door main body 16 Door trim 22 Door speaker (speaker)
24 Vehicle seat (passenger seat)
48 Door pocket (storage part)
60 Vehicle side door structure 62 Door speaker (speaker)

Claims (3)

The side door body,
A door trim covering the side door body from the vehicle interior side;
Provided in a portion overlapping the occupant seating seat in a side view between the side door body and the door trim, and a function of emitting a sound toward the passenger compartment, and a side collision input to the side door body. A speaker configured to perform a function of absorbing energy;
A vehicle door structure comprising:   The vehicle door structure according to claim 1, wherein the speaker is fixed to the door trim. The speaker is disposed at a rear portion in the vehicle front-rear direction between the side door body and the door trim and at a lower portion in the vehicle vertical direction,
The vehicle door structure according to claim 1 or 2, wherein a storage portion for storing the vehicle-mounted product is provided on a front side of the speaker in the front-rear direction of the vehicle.

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