JP6635014B2 - Vehicle side door structure - Google Patents

Description

  The present invention relates to a vehicle side door structure.

  The side door of the vehicle is provided with a lock mechanism for maintaining a door lock state in which the side door is closed. For example, the side door described in Patent Literature 1 includes an outer panel that constitutes an outer panel, a handle base provided on a surface of the outer panel on the inner side in the vehicle width direction (vehicle compartment side), and a bell crank provided on the handle base. Have. In addition, a rod-shaped member that extends in the vehicle up-down direction and that is disposed on the inner side in the vehicle width direction with respect to the handle base and that is connected to the bell crank and a lock mechanism that maintains a door locked state of the side door is provided. I have. Then, the bell crank rotates by the operation of the door handle and the rod moves downward, whereby the door lock state of the side door by the lock mechanism is released.

  Here, at the time of a side collision where a collision load is applied to the side surface of the vehicle, the outer panel is deformed inward in the vehicle width direction, so that the handle base is displaced inward in the vehicle width direction. When the handle base displaced inward in the vehicle width direction pushes the rod inward in the vehicle width direction, the bell crank may rotate and the rod may move downward, thus moving the rod downward. Then, the door lock state maintained by the lock mechanism may be released.

  In order to prevent the door lock state from being released at the time of such a side collision, in the side door described in Patent Literature 2, a metal plate is welded to provide a protruding portion on the rod, and a reinforcement is provided on the outer panel with a concave portion. When the outer panel is deformed inward in the vehicle width direction at the time of a side collision of the vehicle, the downward movement of the rod is prevented by the protrusion being received by the concave portion, thereby preventing an unintended door lock state. To prevent cancellation.

JP-A-2006-137810 JP 2010-13257 A

  In the side door described in Patent Literature 2, a metal plate to be welded to the rod is required to prevent the door from being unlocked at the time of a side collision of the vehicle. Therefore, the number of parts constituting the rod increases as compared with a rod without such a metal plate.

  The present invention has been made in view of such circumstances, and a problem to be solved is to prevent the door lock state from being released at the time of a side collision without increasing the number of parts constituting the rod. It is an object of the present invention to provide a vehicle side door structure.

  A vehicle side door structure that solves the above-mentioned problems includes an outer panel that constitutes an outer plate of a vehicle side door, a handle base provided on an inner surface of the outer panel in a vehicle width direction, and a rotatable handle handle. A supported bell crank, and a bar-shaped member disposed inward of the handle base in the vehicle width direction and extending in the vehicle vertical direction and connected to the bell crank, and rotated in the vehicle vertical direction by rotation of the bell crank. And a lock mechanism for maintaining a door lock state in which a side door of the vehicle is closed, and when the rod moves downward, the door lock state by the lock mechanism is released. Side handle structure of a vehicle, wherein the handle base has an inclined surface that is inclined obliquely downward toward the inside in the vehicle width direction. The rod is provided with a bent portion bent toward the inclined surface, and the handle base is displaced inward in the vehicle width direction by deformation of the outer panel inward in the vehicle width direction, whereby the bending is performed. In the state where the portion is in contact with the inclined surface, the acting direction of the pressing force acting on the inclined surface from the bent portion, and the force acting in the direction perpendicular to the inclined surface, which is the component force of the pressing force When the angle formed by the action direction of the above is “θ” and the static friction coefficient of the inclined surface is “μ”, the inclined angle of the inclined surface is set so as to satisfy the conditional expression of “tan θ <μ”. ing.

  When the handle base is displaced inward in the vehicle width direction due to deformation of the outer panel inward in the vehicle width direction, the bent portion contacts the inclined surface when the bent portion is in contact with the inclined surface. The maximum static friction force acting between them is defined as “M”. When the force acting in a direction parallel to the inclined surface and acting to slide the bent portion in contact with the inclined surface downward along the inclined surface is defined as “F2”, this force is If the conditional expression “F2 <M” indicating that F2 is smaller than the maximum static frictional force M is satisfied, the bent portion in contact with the inclined surface is prevented from sliding downward along the inclined surface, Thus, it is possible to prevent the rod from moving downward and releasing the door lock state.

  Here, the pressing force that acts on the inclined surface from the bent portion is “F”, and the force that is a component force of the pressing force F and acts on the inclined surface in the vertical direction is “F1”. If the angle between the action direction of the pressing force F and the action direction of the component force F1 is “θ”, the component force F1 can be represented by “F1 = F · cos θ”. Since the force F2 is a component of the pressing force F and acts in a direction parallel to the inclined surface, the component F2 can be represented by “F2 = F · sin θ”. If the static friction coefficient of the inclined surface 41 is “μ”, the maximum static friction force M can be represented by “M = μ · F1”, and thus can be represented by “M = μ · F · cos θ”. . Therefore, the above conditional expression “F2 <M” can be modified into a conditional expression “F · sin θ <μ · F · cos θ”, and when this expression is further modified, “tan θ <μ” is obtained.

  Therefore, in the configuration, the inclination angle of the inclined surface is set so as to satisfy the conditional expression represented by “tan θ <μ”. Therefore, when the handle base is displaced inward in the vehicle width direction due to the deformation of the outer panel inward in the vehicle width direction, and the bent portion of the rod comes into contact with the inclined surface of the handle base, the stationary member acts between the bent portion and the inclined surface. The movement of the rod downward can be suppressed by the frictional force, so that the door lock state can be prevented from being released. Here, in the same configuration, since the bent portion is provided by bending the rod, the door lock state at the time of a side collision can be achieved without adding a new part to the rod, that is, without increasing the number of parts constituting the rod. Can be suppressed from being released.

  In addition, when a metal plate is welded to a rod as in the above-described conventional method, a step of welding the metal plate is required unlike a rod having no metal plate. Is unnecessary, so that the welding process of the metal plate is not required, and the manufacturing process of the rod can be reduced.

1 is a partial side view of a vehicle to which a side door structure of a vehicle according to an embodiment is applied. The perspective view which looked at the structure of the handle base periphery of the embodiment from the vehicle interior side. FIG. 3 is a sectional view of the side door taken along line 3-3 in FIG. 1. FIG. 3 is a cross-sectional view of the side door along a line 3-3 in FIG. 1 at the time of a side collision. FIG. 3 is a schematic diagram for explaining a force acting on the inclined surface of the embodiment.

Hereinafter, an embodiment of a side door structure of a vehicle will be described with reference to FIGS.
In each of the drawings, the front of the vehicle is indicated by an arrow FR, the rear of the vehicle is indicated by an arrow RR, the upper part of the vehicle is indicated by an arrow UP, and the lower part of the vehicle is indicated by an arrow DN. The direction inside the vehicle in the vehicle width direction is indicated by an arrow IN, and the direction outside the vehicle in the vehicle width direction is indicated by an arrow OUT.

  As shown in FIG. 1, a front side door 20 (hereinafter, referred to as a side door 20) is provided on a side surface of the vehicle 10 for opening and closing an occupant entry / exit door opening provided on a front seat side of the vehicle 10. I have. A side door of the vehicle 10 is also provided with a rear side door that opens and closes a door opening for passengers provided on the rear seat side of the vehicle 10.

The side door 20 is provided with a lock mechanism 90 for maintaining a door lock state in which the side door 20 is closed.
Further, the side door 20 includes an outer panel 22 that forms an outer plate of the side door 20. A door handle 30 is provided below the belt line on the outer side of the outer panel 22 in the vehicle width direction. The door handle 30 is swingably supported in the vehicle width direction. By swinging the door handle 30 outward in the vehicle width direction, the door lock state of the side door 20 maintained by the lock mechanism is released, and the side door 20 can be opened.

  As shown in FIG. 2, a handle base 40 is attached to the inner surface of the outer panel 22 in the vehicle width direction. On the inner surface of the handle base 40 in the vehicle width direction, an inclined surface 41 that is inclined obliquely downward toward the inside in the vehicle width direction is integrally formed. A bell crank 50 is attached to the handle base 40.

  The bell crank 50 is provided with an engaging portion 52 with which a claw portion provided on the door handle 30 is engaged, and a rotating shaft 51 extending in the vehicle front-rear direction and supported by a bearing portion provided on the handle base 40. The bell crank 50 is rotatably supported about the rotation shaft 51. A spring 60 for urging the bell crank 50 in a direction in which the door lock state is maintained is provided on the outer periphery of the rotating shaft 51.

  A rod-shaped rod 70 extending in the vehicle vertical direction is connected to the bell crank 50. The rod 70 is disposed inside the handle base 40 in the vehicle width direction. The rod 70 has a bent portion 74 bent toward the inclined surface 41.

  The upper end 71 of the rod 70 is inserted into a hole provided in the bell crank 50, whereby the upper end 71 is rotatably supported on the bell crank 50. The rod 70 moves in the vertical direction of the vehicle due to the rotation of the bell crank 50. For example, when the bell crank 50 rotates in a direction in which the upper end 71 of the rod 70 connected to the bell crank 50 moves upward of the vehicle, the rod 70 moves upward of the vehicle. On the other hand, when the bell crank 50 rotates in a direction in which the upper end 71 moves downward in the vehicle, the rod 70 moves downward in the vehicle.

  The lower end 72 of the rod 70 is connected to a door lock open lever 80. The door lock open lever 80 is a member that rotates in the vertical direction of the vehicle as the rod 70 moves up and down. When the rod 70 moves downward in the vehicle, the door lock open lever 80 rotates downward in the vehicle. On the other hand, when the rod 70 moves upward of the vehicle, the door lock open lever 80 rotates upward of the vehicle.

  The door lock open lever 80 is connected to the lock mechanism 90. When the door lock open lever 80 rotates downward in the vehicle, the door lock state maintained by the lock mechanism 90 is released.

  As shown in FIG. 3, when the door handle 30 swings outward in the vehicle width direction, the claw portion 31 of the door handle 30 moves outward in the vehicle width direction. When the claw portion 31 moves outward in the vehicle width direction, the engaging portion 52 of the bell crank 50 with which the claw portion 31 is engaged is retracted outward in the vehicle width direction. The bell crank 50 rotates in the direction of moving downward (the direction of the arrow R shown in FIG. 3). When the bell crank 50 rotates in the direction of arrow R, the rod 70 moves toward the lower side of the vehicle (the direction of arrow B shown in FIG. 3), and the door lock open lever 80 moves downward of the vehicle (in the direction of arrow L shown in FIG. 3). ). By the rotation of the door lock open lever 80, the door lock state of the side door 20 by the lock mechanism 90 is released.

  On the other hand, as shown in FIG. 4, when a side collision of the vehicle occurs in a state where the door is locked by the lock mechanism 90, a force E that deforms the outer panel 22 inward in the vehicle width direction is applied to the outer panel 22. Is added. When the outer panel 22 is deformed inward in the vehicle width direction, the handle base 40 is displaced inward in the vehicle width direction, so that the bent portion 74 of the rod 70 comes into contact with the inclined surface 41 of the handle base 40. Since the bent portion 74 comes into contact with the inclined surface 41 in this manner, even if the bell crank 50 attempts to rotate in the direction in which the door lock state is released (the direction of the arrow R shown in FIG. 4), the rod 70 moves downward (in the vehicle). Since it is difficult to move in the direction of arrow B shown in FIG. 4), the door lock state by the lock mechanism 90 is easily maintained.

  As described above, in the side door structure, the movement of the rod 70 downward of the vehicle is suppressed by the contact between the bent portion 74 and the inclined surface 41 at the time of the side collision of the vehicle. If the contacted bent portion 74 slides downward along the inclined surface 41, the rod 70 moves downward of the vehicle, and the door lock state may be released. Therefore, in the present embodiment, in order to prevent the bent portion 74 in contact with the inclined surface 41 from sliding downward along the inclined surface 41, the inclination angle of the inclined surface 41 is set so as to satisfy the conditional expression described below. are doing.

  FIG. 5 shows a state in which the handle portion 40 is displaced inward in the vehicle width direction due to the deformation of the outer panel 22 inward in the vehicle width direction, so that the bent portion 74 is in contact with the inclined surface 41. In FIG. 5, a contact point where the bent portion 74 and the inclined surface 41 are in contact is indicated by “S”.

  As shown in FIG. 5, the maximum static friction force acting between the bent portion 74 in contact with the inclined surface 41 and the inclined surface 41 is defined as “M”. A force acting in a direction parallel to the inclined surface 41 and acting to slide the bent portion 74 in contact with the inclined surface 41 downward along the inclined surface 41 is referred to as “F2”. I do. If this force F2 is smaller than the maximum static friction force M, that is, if the following conditional expression “F2 <M” is satisfied, the bent portion 74 that is in contact with the inclined surface 41 slides downward along the inclined surface 41. Can be suppressed, whereby it is possible to prevent the rod 70 from moving downward and releasing the door lock state.

  Here, at the time of a side collision, when a force for rotating the bell crank 50 in a direction in which the door lock state is released (the direction of the arrow R shown in FIG. 4) acts on the bell crank 50, the rod 70 is moved downward. Since the force to be applied acts on the rod 70, the bent portion 74 presses the inclined surface 41 at the contact point S. The pressing force acting on the inclined surface 41 from the bent portion 74 in this manner is “F”. A force acting in a direction perpendicular to the inclined surface 41, which is a component force of the pressing force F, is defined as “F1”. If the angle between the action direction of the pressing force F and the action direction of the component force F1 is “θ”, the component force F1 can be expressed by the following equation 1.

F1 = F · cos θ (1)
Since the force F2 is a component of the pressing force F and acts in a direction parallel to the inclined surface 41, the component F2 can be expressed by the following equation (2).

F2 = F · sin θ (2)
When the static friction coefficient of the inclined surface 41 is “μ”, the maximum static friction force M can be expressed by the following equation 3.

M = μ · F1 (3)
By substituting “F1 = F · cos θ” in Equation 1 for “M = μ · F1” in Equation 3, the maximum static friction force M can be expressed by the following Equation 4.

M = μ · F · cos θ (4)
Substituting “F2 = F · sin θ” of the above equation 2 and “M = μ · F · cos θ” of the above equation 4 into the above conditional equation “F2 <M”, the above conditional equation “F2 <M” becomes the following equation. 4 can be transformed.

F · sin θ <μ · F · cos θ (5)
By multiplying both sides of Equation 5 by “1 / F” and “1 / cos θ”, Equation 5 can be transformed into the following Equation 6.

(Sin θ / cos θ) <μ (6)
Then, since “(sin θ / cos θ) = tan θ”, Equation 6 can be transformed into the following Equation 7.

tanθ <μ (7)
Accordingly, if the expression 7 is satisfied, the above-mentioned conditional expression “F2 <M” is satisfied, and the slip of the bent portion 74 on the inclined surface 41 can be suppressed.

  Here, as shown in FIG. 5, the surface of the handle base 40 connected to the upper part of the inclined surface 41 in the vehicle vertical direction is defined as a reference surface 42 with respect to the inclined surface 41. When the angle between the surface parallel to the reference surface 42 and the inclined surface 41 is defined as the inclination angle θa of the inclined surface 41, the angle θ also changes according to the magnitude of the inclined angle θa. The value of “tan θ” also changes.

  Therefore, in the present embodiment, the inclination angle θa of the inclined surface 41 is set so as to satisfy “tan θ <μ”, which is the conditional expression represented by Expression 7 above. Therefore, when the handle base 40 is displaced inward in the vehicle width direction due to the deformation of the outer panel 22 inward in the vehicle width direction and the bent portion 74 of the rod 70 contacts the inclined surface 41 of the handle base 40, even if the bell crank 50 rotates. Even if it is attempted, the downward movement of the rod 70 is suppressed by the static frictional force acting between the bent portion 74 and the inclined surface 41. Therefore, it is possible to suppress the door lock state from being released.

According to the present embodiment described above, the following effects can be obtained.
(1) The handle base 40 is provided with an inclined surface 41 inclined obliquely downward toward the inside in the vehicle width direction. The rod 70 has a bent portion 74 bent toward the inclined surface 41. The inclination angle θa of the inclined surface 41 is set so as to satisfy the above-mentioned conditional expression “tan θ <μ”. Therefore, it is possible to prevent the door lock state from being released at the time of a side collision.

  (2) Since the bent portion 74 is provided by bending the rod 70, the door lock state at the time of a side collision can be achieved without adding new parts to the rod 70, that is, without increasing the number of parts constituting the rod 70. Can be suppressed from being released.

  (3) In addition, when a metal plate is welded to a rod as in the related art, a step of welding the metal plate is required, unlike a rod having no metal plate. In this regard, since such a metal plate is not required for the rod 70 of the present embodiment, a welding process of the metal plate is not required, and the manufacturing process of the rod can be reduced.

The above embodiment can be modified as follows.
The inclined surface 41 is formed integrally with the handle base 40. In addition, a member provided with the inclined surface 41 may be assembled to the handle base 40.

  -The side door structure described in the above embodiment can be applied to a rear side door of a vehicle.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 20 ... Front side door (side door), 22 ... Outer panel, 30 ... Door handle, 31 ... Claw part, 40 ... Handle base, 41 ... Inclined surface, 42 ... Reference surface, 50 ... Bell crank, 51 ... Rotating shaft, 52 engaging portion, 60 spring, 70 rod, 71 upper end, 72 lower end, 74 bending portion, 80 door lock open lever, 90 locking mechanism.

Claims (1)

An outer panel forming an outer plate of a side door of the vehicle, a handle base provided on an inner surface of the outer panel in a vehicle width direction, a bell crank rotatably supported by the handle base, A rod-shaped member arranged in the vehicle width direction and extending in the vehicle vertical direction, connected to the bell crank, and a rod that moves in the vehicle vertical direction by rotation of the bell crank, and a side door is closed. A lock mechanism for maintaining a door lock state, which is a state, wherein the rod is moved downward to release the door lock state by the lock mechanism, a side door structure of the vehicle,
The handle base is provided with an inclined surface that is inclined obliquely downward toward the inside in the vehicle width direction,
The rod is provided with a bent portion bent toward the inclined surface,
In a state where the handle base is displaced inward in the vehicle width direction due to the deformation of the outer panel inward in the vehicle width direction and the bent portion is in contact with the inclined surface, the pressing force acting on the inclined surface from the bent portion is reduced. The angle between the acting direction and the acting direction of the force acting in the direction perpendicular to the inclined surface, which is a component of the pressing force, is defined as “θ”, and the static friction coefficient of the inclined surface is defined as “μ”. And the inclination angle of the inclined surface is set so as to satisfy the conditional expression of “tan θ <μ”.

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