JP6173860B2 - Hood cushion device for vehicle - Google Patents

Description

  The present invention relates to a vehicle hood cushion device provided in a vehicle in order to regulate a closed position of an engine hood or the like of the vehicle.

  For example, as shown in FIG. 5, the vehicle is provided with a hood cushion device 120 at the upper end of the front portion of the vehicle body in order to regulate the closed position of the engine hood (also referred to as bonnet hood) 101 (patent). Literature 1, Patent Literature 2). In the figure, reference numeral 102 denotes a front fender.

The hood cushion device 120 includes a hood cushion 121 and an attachment member 131.
As shown in FIG. 6, the hood cushion 121 has a spiral thread groove 123 formed on the outer periphery of a cylindrical elastic body. On the other hand, the attachment member 131 is configured by a part of a vehicle component such as a radiator support upper, and an attachment hole 132 into which the screw groove 123 of the hood cushion is screwed is formed. It has been proposed that a screwing inlet 133 for the screw groove 123 of the hood cushion is formed by cutting out the mounting hole 132 in the radial direction. A peripheral edge 134 of the mounting hole 132 is raised at one side end 133a of the screwing inlet 133, and gradually lowered from the one side end 133a around the peripheral edge part 134 of the mounting hole 132. It is formed to be the lowest at the other side end 133 b of the entrance 133.

  In the hood cushion device 120, the protrusion height of the hood cushion 121 from the mounting member 131 is inserted by inserting it into the screwing inlet 133 of the mounting member 131 from the distal end side 123 c of the screw groove 123 and rotating the hood cushion 121. Is a predetermined height.

  However, there is a problem in that the hood cushion 121 rotates due to vibrations when the vehicle travels, and the height of the hood cushion 121 from the mounting member 131 changes. When the height of the hood cushion 121 from the mounting member 131 changes, the closed position of the engine hood 101 changes from the set position to buffer the engine hood 101 and the components of the vehicle body, or when the hood cushion 101 is closed. There is a possibility that the chattering noise of the engine hood 101 may be generated during traveling because the upper end of the engine does not come into contact with the engine hood 101.

Further, by reducing the width of the bottom of the screw groove 123 and increasing the frictional resistance between the inner surface of the screw groove 123 and the peripheral portion 134 of the mounting hole 132, the rotation of the hood cushion 121 due to the vibration of the vehicle is suppressed. However, in that case, a large force is required for the rotation of the hood cushion at the time of mounting, and the assembling work becomes difficult.
In addition, it has been proposed to provide a rotation restricting projection on the screw groove to suppress the rotation of the hood cushion due to the vibration of the vehicle. Or, since the rotation restricting projections to be left are different, it is troublesome.

JP-A-9-150755 JP 2001-233250 A

  The present invention has been made in view of the above points, and an object of the present invention is to provide a vehicle hood cushion device that can be easily assembled and can suppress rotation of the hood cushion due to vibration of the vehicle.

According to a first aspect of the present invention, there is formed a hood cushion having a spiral thread groove formed on the outer periphery of an elastic body, a mounting hole into which the thread groove of the hood cushion is screwed, and the hood cushion at the edge of the mounting hole. In a vehicular hood cushion device, an inner periphery of the mounting hole of the mounting member is connected to the screwing inlet. Except that the mounting hole has a minimum distance and a maximum distance from the hole center along the inner periphery, and the inner periphery of the spiral screw groove of the hood cushion has an axial center of the hood cushion. A distance from the center of the screw hole, and the distance from the center of the mounting hole to the inner periphery of the mounting hole is from the shaft center of the hood cushion. Inside thread groove There Ri Ah small than the maximum distance, wherein the inner peripheral shape of the screw groove of the inner peripheral shape as the hood cushion of the mounting hole of the mounting member comprises a polygon.

According to a second aspect of the present invention, there is formed a hood cushion having a spiral thread groove formed on the outer periphery of an elastic body, a mounting hole into which the thread groove of the hood cushion is screwed, and the hood cushion at the edge of the mounting hole. In a vehicular hood cushion device, an inner periphery of the mounting hole of the mounting member is connected to the screwing inlet. Except, the mounting hole has a minimum distance and a maximum distance from the hole center alternately along the inner periphery, and the inner periphery of the spiral thread groove of the hood cushion The hood cushion has a portion having a minimum distance and a maximum portion from the shaft center alternately along the inner periphery of the screw groove, and the distance from the hole center of the mounting hole to the inner periphery of the mounting hole is the minimum. The axis center of The inner circumference of the thread groove is smaller than the maximum distance, wherein the inner peripheral shape of the screw groove of the inner peripheral shape as the hood cushion of the mounting hole of the mounting member comprises a polygon.

  According to the present invention, when the hood cushion is rotated when the hood cushion is attached to the attachment hole, the portion where the distance from the hole center of the attachment hole is the smallest (the smallest diameter portion) is removed from the shaft center of the hood cushion. When the part where the distance is maximum (maximum diameter part) passes, the maximum diameter part of the inner circumference (ie bottom) of the screw groove of the hood cushion compresses and deforms, creating a click feeling. Is possible. Furthermore, the hood cushion can be assembled at a set height by counting the click feeling and rotating the hood cushion until a predetermined count is reached.

  In addition, according to the present invention, after the hood cushion is assembled, the part having the smallest distance from the center of the mounting hole (smallest diameter part) is the part having the largest distance from the shaft center of the hood cushion (the largest diameter part). ) Does not rotate, the hood cushion cannot rotate, and the hood cushion does not rotate due to the vibration of the vehicle and the height does not change. Furthermore, according to the present invention, even if the set height of the hood cushion is different, it is only necessary to change the rotation amount of the hood cushion, and the mounting operation is easy.

It is a perspective view which shows the hood cushion and attachment member in the hood cushion apparatus which concerns on one Embodiment. FIG. 2 is a plan view of the vicinity of the attachment hole of the hood cushion and attachment member of FIG. 1. It is sectional drawing which shows the hood cushion apparatus of the state which attached the hood cushion of FIG. 1 to the attachment member. It is a figure which shows the example of the inner peripheral shape of the screw hole of a mounting hole and a hood cushion. It is the schematic sectional view which looked at the engine room which mainly represented the engine hood and the hood cushion device from the front of the vehicle. It is a perspective view which shows the conventional food cushion apparatus.

  As shown in FIG. 5, the hood cushion device 10 of the embodiment shown in FIGS. 1 to 3 has an engine at the front portion of the vehicle body in order to regulate the closed position of an engine hood (also referred to as a hood hood) 101. It is provided at the upper end in the room and comprises a hood cushion 21 and an attachment member 51.

  In the hood cushion 21, a thread groove 22 is formed in a spiral shape on the outer periphery of a cylindrical elastic body. The elastic body is made of rubber or resin. The screw grooves 22 are formed at a predetermined pitch in the axial direction of the hood cushion 21 (that is, the length direction of the hood cushion). In the present embodiment, the thread groove 22 is formed in a range from the position of the tip of the hood cushion 21 (the end of the attachment start side to the attachment member 51) 12 to a position a predetermined amount before the other end 13. Yes.

  The inner periphery 23 of the screw groove 22 of the hood cushion 21 (that is, the bottom surface of the screw groove 22) is a polygon (in the illustrated example, a hexagon), and the distance a from the shaft center 21c of the hood cushion 21 is a minimum amin. And the maximum amax portion 23b are alternately provided along the inner periphery 23 of the screw groove 22. The shaft center 21 c is a central axis that passes through the center position of the cross section of the hood cushion 21. In the illustrated example, the portion 23a having the minimum distance is an intermediate position between the polygonal corner portions (vertex portions), while the portion 23b having the maximum distance is the polygonal corner portion (vertex portion). .

  In the present embodiment, the mounting member 51 is constituted by a part of a vehicle component such as a radiator support upper in an engine room of the vehicle. The attachment member 51 is made of a metal plate and has an attachment hole 55 into which the screw groove 22 of the hood cushion 21 is screwed. In the peripheral portion 56 of the mounting hole 55, a screwing inlet 59 for the thread groove 22 of the hood cushion 21 is formed by cutting out in the radial direction of the mounting hole 55. The peripheral edge 56 of the mounting hole 55 is gradually increased or decreased (lowered in the present embodiment) as it goes around the peripheral edge 56 of the mounting hole 55 from one side end 591 of the screwing inlet 59. The other end 593 of the screwing entrance 59 is formed in a spiral shape so that the difference in height from the one end 591 is maximized, and a step is formed between the one end 591 and the other end 593. Yes.

  The inner periphery 57 of the mounting hole 55 is polygonal (hexagonal in the illustrated example) except for the screwing inlet 59, and the distance b from the hole center 55c of the mounting hole 55 is the smallest. Bmin portions 57a and maximum bmax portions 57b are alternately provided along the inner periphery 57 of the mounting hole. In the illustrated example, the portion 57a with the smallest distance is an intermediate position between the polygonal corner portions (vertex portions), while the portion 57b with the largest distance is the polygonal corner portion (vertex portion). .

  The minimum value bmin of the distance from the hole center 55c of the mounting hole 55 is set so that the distance from the shaft center 21c of the hood cushion 21 is smaller than the maximum value amax, that is, bmin <amax. Furthermore, bmin + (0.5 to 2.0 mm) ≦ amax ≦ bmin + (3.0 to 5.0 mm) is preferable. With this setting, it is easy to rotate the hood cushion 21 by rotating the hood cushion 21 by screwing the screw groove 22 of the hood cushion 21 into the inner periphery 57 of the mounting hole 55, and the hood cushion 21 is caused by vibration of the vehicle. Rotation can be prevented more reliably.

  The hood cushion 21 is attached to the attachment member 51 from the front end 12 side of the hood cushion 21 by using the screwing inlet 59 formed in the peripheral portion 56 of the attachment hole 55 in the attachment member 51. The peripheral edge 56 of the mounting hole 55 is inserted into the screw groove 22 and screwed together. Then, the hood cushion 21 is rotated in the screwing direction until the hood cushion 21 reaches a predetermined height.

  When the hood cushion 21 is rotated, the portion (minimum diameter portion) 57a having the smallest distance from the hole center 55c of the mounting hole 55 and the portion (maximum diameter portion) having the largest distance from the shaft center 21c of the hood cushion 21 are provided. ) Since a click feeling is generated when 23b is pressed and rotated, attachment with a moderation feeling becomes possible. Furthermore, the hood cushion can be assembled at a set height by counting the click feeling and rotating the hood cushion 21 until the predetermined count is reached.

  Further, after the hood cushion 21 is screwed into the mounting hole 55 so as to have a predetermined height (that is, after assembly), the portion (minimum diameter portion) 57a having the smallest distance from the hole center 55c of the mounting hole 55. If the part (maximum diameter part) 23b having the maximum distance from the shaft center 21c of the hood cushion 21 does not pass through, the hood cushion 21 cannot be rotated. Can be prevented from changing.

  The inner peripheral shape of the screw groove 22 of the hood cushion 21 is not limited to a hexagonal shape, and a relatively small portion and a relatively large portion from the shaft center of the hood cushion are along the inner periphery of the screw groove. As long as it has alternately. Further, the inner peripheral shape of the mounting hole 55 is not limited to a hexagon, and the distance from the hole center of the mounting hole is relatively small and large as long as it alternately has a large portion along the inner periphery. Good.

  For example, in the example shown in (4-1) of FIG. 4, the shape of the inner periphery 571 of the mounting hole and the shape of the inner periphery 231 of the thread groove of the hood cushion are such that a part of the circle is linear. In the example shown in (4-2) of FIG. 4, the shape of the inner periphery 572 of the mounting hole and the shape of the inner periphery 232 of the screw groove of the hood cushion are configured in a square shape. In the example shown in 3), the shape of the inner periphery 573 of the mounting hole and the shape of the inner periphery 233 of the screw groove of the hood cushion are substantially triangular shapes configured by three arcs.

DESCRIPTION OF SYMBOLS 10 Hood cushion apparatus 21 Hood cushion 22 Thread groove 23 Inner circumference 23a Minimum part 23b Maximum part 51 Attachment part 55 Attachment hole 56 Peripheral part of attachment hole 57 Inner circumference of attachment hole 57a Minimum part 57b Maximum part 59 Entrance for screwing

Claims (2)

A hood cushion in which a spiral thread groove is formed on the outer periphery of the elastic body;
A mounting hole in which a screw groove of the hood cushion is screwed, and an attachment member in which a screwing entrance to a screw portion of the hood cushion is cut out in a radial direction of the mounting hole at an edge of the mounting hole;
In the vehicle hood cushion device,
The inner periphery of the mounting hole of the mounting member has a portion with a minimum distance and a maximum portion from the hole center of the mounting hole along the inner periphery, except for the entrance for screwing.
The inner periphery of the spiral thread groove of the hood cushion has a minimum part and a maximum part from the center of the axis of the hood cushion along the inner periphery of the thread groove,
Said distance inner periphery smallest of the the hole center of the mounting hole mounting hole, the inner circumference of the thread groove from the axial center of the hood cushion Ri Oh small than the maximum distance,
A vehicle hood cushion device , wherein an inner peripheral shape of the mounting hole of the mounting member and an inner peripheral shape of a screw groove of the hood cushion are polygonal . A hood cushion in which a spiral thread groove is formed on the outer periphery of the elastic body;
A mounting hole in which a screw groove of the hood cushion is screwed, and an attachment member in which a screwing entrance to a screw portion of the hood cushion is cut out in a radial direction of the mounting hole at an edge of the mounting hole;
In the vehicle hood cushion device,
The inner periphery of the mounting hole of the mounting member has a minimum portion and a maximum portion from the hole center of the mounting hole alternately along the inner periphery, except for the entrance for screwing.
The inner circumference of the spiral thread groove of the hood cushion has alternately the smallest part and the largest part from the center of the axis of the hood cushion along the inner circumference of the thread groove,
Said distance inner periphery smallest of the the hole center of the mounting hole mounting hole, the inner circumference of the thread groove from the axial center of the hood cushion Ri Oh small than the maximum distance,
A vehicle hood cushion device , wherein an inner peripheral shape of the mounting hole of the mounting member and an inner peripheral shape of a screw groove of the hood cushion are polygonal .

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