JP5649043B2 - Vehicle side door device - Google Patents

Description

  The present invention relates to a vehicle side door device configured to close a door opening formed in a side wall by rotating the side door from the outside of the vehicle body toward the side wall of the vehicle body.

  Conventionally, there is a vehicle side door device disclosed in Patent Document 1 below. According to this publication, a door opening is formed on the side wall of the vehicle body, and a side door is provided that closes the door opening so as to be openable and closable from the outside of the vehicle body. The front end of the door is pivotally supported by the front opening edge of the door opening so that the rear side of the door moves toward the outside of the vehicle body and can be rotated backward. The doors face each other in the width direction of the vehicle body, and are joined to each other so as to have a hollow closed cross-sectional shape in plan view. And a reinforcing panel coupled to the upper edge of the inner panel by spot welding at a plurality of front and rear locations. In general, the reinforcing panel has a thickness greater than that of the inner panel, so that high strength and rigidity are ensured.

  Then, when the door is rotated outward toward the outside of the vehicle body, the door opening is opened by the door. Further, when the door is rotated backward from the outside of the vehicle body, the door opening is closed by the door.

  On the other hand, when the vehicle collides with an object ahead (front collision) while traveling forward, and the impact force due to the collision is applied to the door, the door tries to deform. Is prevented by reinforcement by the reinforcing panel.

JP 2000-71769 A

  By the way, as described above, when the door is rotated backward from the outside of the vehicle body and the door opening is closed, the rear end of the inner panel usually collides with the rear opening edge of the door opening. The reverse rotation described above is prevented. For this reason, when the backward rotation of the door is blocked to a certain extent in this way, the inertial force generated in the inner panel and the reinforcing panel due to the backward rotation of the door until the door is blocked. The midway part of these panels in the front-rear direction tends to bend so as to have a convex arc shape toward the inside of the vehicle body in plan view of the vehicle body.

  When bending as described above, the bending radii of both members of the upper edge of the inner panel and the reinforcing panel tend to be small, but the bending radii of these two members are different from each other. The relative positions of these two members tend to be displaced in the front-rear direction. In particular, when the door rotates backward, on the rear side of the door where the rotational speed is relatively fast and the inertial force is large, the displacement of the relative position of both members tends to be larger.

  And when the relative position of the both members is greatly displaced, a large shear stress is generated in the welded portion of the two members by spot welding with each other, and there is a possibility that weld peeling will occur. That is, if the door is repeatedly rotated in an attempt to repeatedly close the door opening, there is a risk that the door will be damaged in a short period of time.

  The present invention has been made paying attention to the above situation, and an object of the present invention is to repeatedly rotate the side door toward the side wall in order to repeatedly close the door opening formed on the side wall of the vehicle body. In this case, the door is prevented from being damaged in a short period of time based on the inertial force of the rotation of the door, thereby improving the life of the door.

According to the first aspect of the present invention, a door opening 10 is formed in the side wall 6 of the vehicle body 2, a side door 13 is provided that can be opened and closed from the outside of the vehicle body 2, and the rear side of the door 13 is the side of the vehicle body 2. The front end is pivotally supported on the front opening edge 11 of the door opening 10 so as to be able to go outwards and to return backwards A and B, and the door 13 faces each other in the width direction of the vehicle body 2. The inner and outer panels 20 and 21 coupled to each other so as to have a hollow closed cross-sectional shape in a plan view (FIGS. 3 and 7 ), and the inner surface of the upper edge 22 over the substantially entire length of the inner surface of the upper edge 22 of the inner panel 20 And a reinforcing panel 23 that is connected to the upper edge 22 of the inner panel 20 at a plurality of front and rear locations by spot welding.
In a range 40 from the abutting portion of the door 13 to the rear opening edge 12 of the door opening 10 in the front-rear direction of the vehicle body 2 to the last welded portion W ′ of the welded portion W by spot welding, Forming a weakened portion 42 in a portion extending in the front-rear direction of the inner panel 20 ,
The vehicle side door device characterized in that the weak portion 42 is a bead convex toward the outside of the vehicle body 2 and the bead is brought into contact with a rear end portion which is a free end portion of the reinforcing panel 23. It is.

According to the second aspect of the present invention, a plurality of welded portions W ′ and W ′ that are the rearmost portions of the respective welded portions W in the vertical direction of the reinforcing panel 23 are provided so as to be lined up and down. 2. The vehicle side door device according to claim 1, wherein the fragile portion is formed to extend substantially in parallel.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

According to the first aspect of the present invention, a door opening is formed in the side wall of the vehicle body, a side door is provided that can be opened and closed from the outside of the vehicle body, and the rear side of the door moves outward and outward from the vehicle body. The front end is pivotally supported on the front opening edge of the door opening so as to be rotatable, and the doors face each other in the width direction of the vehicle body and are coupled to each other so as to have a hollow closed cross-sectional shape in plan view. An inner panel, an outer panel, a reinforcing panel that extends along the inner surface of the upper edge of the inner edge of the inner edge of the inner panel, and is joined to the upper edge of the inner panel by spot welding at a plurality of front and rear positions. In a vehicle side door device comprising:
In the longitudinal direction of the vehicle body, the inner panel extends in the longitudinal direction in a range from the contact portion of the door to the rear opening edge of the door opening to the last welded portion of the spot welded portion. A weak part is formed in the part.

  Here, when the door is rotated backward from the outside of the vehicle body and the door opening is closed, the rear end portion of the inner panel usually collides with the rear opening edge of the door opening and further returns. Movement is blocked. For this reason, when the door opening is closed to some extent by the backward rotation of the door in this way, as described in the prior art, both the upper edge of the inner panel and the reinforcing panel are The relative positions of the members tend to be displaced in the front-rear direction. In particular, when the door rotates backward, on the rear side of the door where the rotation speed is relatively high and the inertial force is large, the displacement of the relative position of both the above-described members becomes larger. There is a concern that the shear stress of the last welded portion becomes large and weld peeling occurs.

  However, according to the invention, when a large shear stress is generated in the welding portion at the rearmost portion due to the displacement of the relative positions of the two members, the fragile portion is elastically deformed such as being easily bent, It is prevented that the relative position of both members tries to be displaced. For this reason, it is prevented that welding peeling arises in the mutual welding part of the said both members. Therefore, in order to repeatedly close the door opening formed on the side wall of the vehicle body, when the side door is repeatedly rotated toward the side wall, the door is damaged in a short period of time based on the inertial force of the rotation of the door. Is prevented and an increase in the service life of the door is achieved.

  Moreover, since the above-mentioned effect of improving the service life of the door can be achieved without providing a separate reinforcing material, the above effect can be achieved at a low cost with a light weight and simple configuration.

A second aspect of the present invention, a plurality so as to align the weld respectively the rearmost of each unit weld in the vertical direction of the reinforcing panel in the vertical, the fragile portion so as to extend substantially parallel long in the direction in which these welds are arranged Is forming.

  For this reason, when the door is rotated backward from the outside of the vehicle body and the door opening is closed as described above, the respective portions in the longitudinal direction of the weakened portion extending substantially parallel to the plurality of welded portions are substantially mutually connected. A uniform stress is generated, and each portion of the fragile portion is easily elastically deformed. Therefore, since the displacement of the relative position of both the above-mentioned members is more reliably prevented, it is more reliably prevented that welding peeling occurs at the welded portion of the both members.

FIG. 3 is a partially enlarged detail view of FIG. 2. It is a side view of a vehicle body front part. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1. FIG. 4 is a sectional view taken along line IV-IV in FIG. 1. FIG. 5 is a cross-sectional view taken along line VV in FIG. 1. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 1. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 2.

  In the vehicle hood device of the present invention, in order to repeatedly close the door opening formed on the side wall of the vehicle body, when the side door is repeatedly rotated toward the side wall, this is based on the inertial force of the rotation of the door. In order to realize the object of preventing the door from being damaged in a short period of time and improving the life of the door, a mode for carrying out the present invention is as follows.

That is, in a side door device of a vehicle, a door opening is formed on a side wall of the vehicle body, and a side door is provided that closes the door opening so as to be opened and closed from the outside of the vehicle body. The front end of the door is pivotally supported by the front opening edge of the door opening so that the rear side of the door moves toward the outside of the vehicle body and can be rotated backward. The doors face each other in the width direction of the vehicle body and are coupled to each other so as to have a hollow closed cross-sectional shape in plan view, and the inner surface of the upper edge of the inner panel extends over substantially the entire inner surface of the upper edge of the inner panel. And a reinforcing panel coupled to the upper edge of the inner panel by spot welding at a plurality of front and rear locations. In the longitudinal direction of the vehicle body, the inner panel extends in the longitudinal direction in a range from the contact portion of the door to the rear opening edge of the door opening to the last welded portion of the spot welded portion. A fragile part is formed in the part. Further, the weak part is a bead convex toward the outside of the vehicle body, and the bead is brought into contact with a rear end part which is a free end part of the reinforcing panel.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 denotes a vehicle exemplified by an automobile. In the drawing, an arrow Fr indicates the front of the vehicle 1 in the traveling direction.

  The vehicle body 2 of the vehicle 1 is supported on the road surface 4 by front and rear wheels 3. The interior of the vehicle body 2 is a vehicle compartment 5. The side wall 6 of the vehicle body 2 is made of sheet metal, and a front side door device 7 is provided at the front portion of the side wall 6. Hereinafter, the side door device 7 will be described.

  A door opening 10 is formed in the front portion of the side wall 6 of the vehicle body 2. The front opening edge portion 11 of the door opening 10 is configured by a front pillar that extends in the vertical direction and has a cross section of each of the vertical directions in the shape of a hollow closed cross section. Further, the rear opening edge 12 of the door opening 10 is constituted by a rear pillar that extends in the vertical direction and has a rectangular hollow closed cross section in the vertical direction. The front and rear opening edge portions 11 and 12 both have high strength and high rigidity and constitute a skeleton member of the vehicle body 2.

  A side door 13 is provided for closing the door opening 10 so as to be openable and closable from the outside of the vehicle body 2. The door 13 has a rear end that moves toward the outer side of the vehicle body 2, and a front end edge 11 of the door opening 10 is formed by a pair of upper and lower hinges 14, 14 so that the backward rotation A, B is possible. It is pivotally supported by.

  Then, when the door 13 is rotated A toward the outside of the vehicle body 2, the door opening 10 is opened by the door 13 (two-dot chain line in FIG. 7). When the door 13 is rotated backward B from the outside of the vehicle body 2, the door opening 10 is closed by the door 13 (solid line in each figure).

  The door 13 includes a sheet metal door main body 17 constituting a lower part thereof, and a door window 18 constituting an upper part and supported by the door main body 17. The door main body 17 faces each other in the width direction of the vehicle body 2 and is coupled to each other so as to have a hollow closed cross-sectional shape in plan view (FIGS. 3 and 6), and the inner panel 20 And a reinforcing panel 23 that reinforces the upper edge 22 that is the waistline. The reinforcing panel 23 extends along the inner surface of the upper end edge 22 over substantially the entire inner surface of the upper end edge 22 and is joined to the upper end edge 22 of the inner panel 20 by spot welding at a plurality of front and rear positions. . A symbol W in each figure indicates a welded portion by each spot welding.

  The inner panel 20 faces the front and rear directions of the vehicle body 2 and extends long in the vertical direction before and after the rear panels 26 and 27, and the front and rear panels 26 and 27, the inner side of the vehicle body 2 is the edge of the side of the vehicle body 2. A main panel 28 that is integrally connected to each other and extends linearly in the front-rear direction, and an outer side of the vehicle body 2 of the front and rear panels 26 and 27 are integrally formed on each edge portion of the wing. Directional flanges 29 and 29 are provided. And each outward flange 29 of the said inner panel 20 and the front and rear-end edge part of the said outer panel 21 are mutually couple | bonded. Although not shown in detail, the lower end edges of the inner and outer panels 20 and 21 are also coupled to each other.

  The reinforcing panel 23 faces each other in the vertical direction and extends linearly in the front-rear direction of the vehicle body 2, and the lower panels 32, 33, and the upper and lower panels 32, 33 on the inner side of the vehicle body 2 A connecting panel 34 that integrally connects the edges and extends in the vertical direction, and the outer side of the vehicle body 2 of the upper and lower panels 32 and 33 is outwardly formed integrally with each edge of the wing. Flange 35, 35 is provided.

  That is, the cross section of each part in the front-rear direction of the reinforcing panel 23 has a lateral hat shape, and the reinforcing panel 23 is thicker than the inner panel 20. High rigidity. The rear end portion of the reinforcing panel 23 is located substantially at the same position in the front-rear direction of the vehicle body 2 as the rear end portion of the upper end edge 22 of the inner panel 20. A notch 36 is formed in the upper outward flange 35 at the rear end of the reinforcing panel 23.

  A sealing material 39 is attached to the outer edge of the door 13. The sealing material 39 seals between the opening edge portions 11 and 12 of the door opening 10 and the outer edge portion of the door 13. At the rear outer edge of the door 13, the sealing material 39 is attached to the outer surface of the rear panel 27 of the inner panel 20 in the width direction of the vehicle body 2. The rear outer edge portion of the door 13 that has closed the door opening 10 is in pressure contact with the outer surface of the rear opening edge portion 12 through the sealing material 39.

  From the contact portion (pressure contact portion) of the door 13 through the sealing material 39 to the rear opening edge 12 of the door opening 10 in the front-rear direction of the vehicle body 2, the last of the welded portions W by the spot welding. A weakened portion 42 is formed at a portion extending in the front-rear direction of the inner panel 20, that is, a rear end portion of the main panel 28 in a range 40 reaching the welded portion W ′. Specifically, the fragile portion 42 is a bead having a convex shape toward the outer side of the vehicle body 2 at the rear end portion of the main panel 28 of the inner panel 20 and extends long in the vertical direction. The bead is in contact (including pressure contact) with the inner surface of the vehicle body 2 at the rear end of the connection panel 34 of the reinforcing panel 23.

A plurality (three places) of welded portions W ′ and W ′ that are the rearmost portions of the welded portions W in the vertical direction of the reinforcing panel 23 are arranged vertically. The direction in which these welds W ′ are arranged is the side edge of the vehicle body 2 (FIG. 1), the rear edge of the main panel 28 of the inner panel 20 and the edge of the outer side of the vehicle 2 of the rear panel 27 on the outer side of the vehicle 2. Are substantially parallel to the bent portion 44 formed by Further, the respective welded portions W ′ and the fragile portion 42 at the rearmost portion, and the fragile portion 42 and the bent portion 44 are positioned in the vicinity of each other in the front-rear direction of the vehicle body 2.

  According to the above configuration, the range from the contact portion of the door 13 to the rear opening edge 12 of the door opening 10 in the front-rear direction of the vehicle body 2 to the last welded portion W ′ of the welded portion W by spot welding. 40, a weakened portion 42 is formed in a portion extending in the front-rear direction of the inner panel 20.

  Here, as shown by a two-dot chain line in FIG. 7, when the door 13 is rotated backward B from the outside of the vehicle body 2 and the door opening 10 is closed, the rear end of the inner panel 20 is usually Colliding with the rear opening edge 12 of the door opening 10, further backward rotation B is prevented. For this reason, when the backward rotation B of the door 13 is blocked to a certain degree of impact in this way, the inner panel 20 and the reinforcing panel 23 are moved by the backward rotation B of the door 13 until the blocking is reached. Due to the generated inertial force, the midway part in the front-rear direction of both the panels 20 and 23 is bent so as to have a convex arc shape toward the inside of the vehicle body 2 in plan view of the vehicle body 2 (FIG. 7). (Alternatively, the alternate long and short dash line in FIG. 7 is exaggerated for convenience of explanation).

  In the case of bending as described above, the bending radii of both the members 22, 23 of the upper end edge portion 22 of the inner panel 20 and the reinforcing panel 23 tend to be reduced. Since the respective bending radii are different from each other, the relative positions of the two members 22 and 23 tend to be displaced in the front-rear direction.

  In particular, when the door 13 rotates backward B, on the rear side of the door 13 where the rotational speed is relatively fast and the inertial force is large, the displacement of the relative positions of both the members 22 and 23 becomes larger. Due to this displacement, there is a possibility that the shear stress of the last welded portion W ′ is increased and weld peeling occurs.

  However, according to the above-described configuration, the fragile portion 42 is easily bent when a large shearing stress is generated in the last welded portion W ′ due to the displacement of the relative positions of the two members 22 and 23. It is possible to prevent the relative positions of the two members 22 and 23 from being displaced due to elastic deformation. For this reason, it is prevented that welding peeling arises in the mutual welding part W 'of both the said members 22 and 23. FIG. Therefore, when the side door 13 is repeatedly rotated toward the side wall 6 in order to repeatedly close the door opening 10 formed in the side wall 6 of the vehicle body 2, this door is based on the inertia force of the rotation of the door 13. 13 is prevented from being damaged in a short period of time, and an improvement in the life of the door 13 is achieved.

  Moreover, since the effect of improving the lifetime of the door 13 described above can be achieved without providing a separate reinforcing material, the above effect can be achieved at a low cost with a light weight and simple configuration.

Further, as described above, a plurality of welded portions W ′ and W ′ that are the rearmost portions of the respective welded portions W in the vertical direction of the reinforcing panel 23 are provided so as to be lined up and down, and these welded portions W ′ and W ′ are aligned. The fragile portion 42 is formed so as to extend long in parallel with the direction.

  For this reason, the door 13 is rotated backward B from the outside of the vehicle body 2 as described above at each longitudinal portion of the weakened portion 42 extending substantially parallel to the plurality of welded portions W ′ and W ′. When the door opening 10 is closed, substantially uniform stresses are generated, and each portion of the fragile portion 42 is easily elastically deformed. Therefore, since the displacement of the relative position of both the members 22 and 23 is more reliably prevented, it is more reliably prevented that the welding separation of the welded portions W ′ of the both members 22 and 23 occurs. .

  Further, as described above, the last welded portions W ′ and W ′ are provided so as to be lined up and down substantially parallel to the bent portion 44.

  For this reason, the relative positions of the welded portions W ′ and W ′ with respect to the bent portion 44, which tend to be high in strength, are substantially the same, so that the door 13 can be rotated backward from the outside of the vehicle body 2 as described above. When the door opening 10 is closed, the stresses generated in the welds W ′ and W ′ are substantially uniform. Therefore, it is possible to more reliably prevent weld peeling from occurring in the welded portions W ′ and W ′ of the members 22 and 23.

In addition, although the above is based on the example of illustration, you may apply the structure of the said front side door apparatus 7 to the rear side door apparatus provided in the rear part of the said side wall 6. FIG. Further, the weak portion 42 may be provided several Article birefringence. Moreover, the weak part 42 may be a thin part.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 5 Car compartment 6 Side wall 7 Side door apparatus 10 Door opening 11 Front opening edge part 12 Rear opening edge part 13 Door 20 Inner panel 21 Outer panel 22 Upper end edge part 23 Reinforcement panel 39 Sealing material 40 Range 42 Weak part 44 Bending part A Forward rotation B Reverse rotation W, W 'Welded part

Claims (2)

A door opening is formed on the side wall of the vehicle body, and a side door is provided for closing the door opening from the outside of the vehicle body so that the door can be opened and closed. The inner panel, the outer panel, and the inner panel are coupled to each other so that the doors face each other in the width direction of the vehicle body and have a hollow closed cross-sectional shape in plan view. A vehicle side door comprising a reinforcing panel that extends along the inner surface of the upper edge of the upper edge of the panel and that is connected to the upper edge of the inner panel by spot welding at a plurality of front and rear positions. In the device
In the longitudinal direction of the vehicle body, the inner panel extends in the longitudinal direction in a range from the contact portion of the door to the rear opening edge of the door opening to the last welded portion of the spot welded portion. Forming a fragile part in the part ,
The vehicle side door device according to claim 1, wherein the weak part is a bead having a convex shape toward the outside of the vehicle body, and the bead is brought into contact with a rear end part which is a free end part of the reinforcing panel . And characterized in that the welds are the last portion of each unit weld in the vertical direction of the reinforcing panel a plurality so as to align vertically to form the fragile portion so as to extend substantially parallel long in the direction in which these welds are arranged The vehicle side door device according to claim 1.

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