JP2006168663A - Cap member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cap member capable of preventing intrusion of a foreign matter by ensuring sealing property of a joint part of a vehicle panel and a strut mount. <P>SOLUTION: First and second outer peripheral projection parts 12, 13 circumferentially continued while projecting from the outer peripheral surface to an outside in a radial direction are arranged on an opening side of a body part 11 constituted in a bottomed cylindrical body and projection dimensions of the first and second outer peripheral projection parts 12, 13 are set larger than a distance between opposed surfaces of an outer peripheral surface of a case body 3 and an inner peripheral surface of a wall part of the vehicle panel 7. Thereby, in the state in which the strut mount 1 is mounted to the vehicle panel 7, the first outer peripheral projection part 12 is clamped/retained between an upper surface of the strut mount 1 and a lower surface of the vehicle panel 7 and the second outer peripheral projection part 13 is abutted on the inner peripheral surface of the wall part of the vehicle panel 7. Therefore, intrusion of the foreign matter such as rain water, muddy water and dust can be prevented by ensuring the sealing property of the joint part of the vehicle panel 7 and the strut mount 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cap member, and more particularly, to a cap member that can secure a sealing property of a joint portion between a vehicle panel and a strut mount and prevent entry of foreign matter.

  Generally, in a suspension device such as an automobile, a so-called strut mount is interposed in a mounting portion of the shock absorber on the vehicle side, and a cap member is externally fitted from above the strut mount, so that the vehicle can be Blocks the impact sound of the strut mount.

  For example, in Japanese Patent Application Laid-Open No. 2002-147518, a mounting cap (cap member) made of a bell-like rubber-like elastic body protrudes inward from a lower end inner peripheral surface of a cap body (main body portion). A technique that includes a circumferential protrusion is disclosed. According to this technique, since the circumferential protrusion is configured to be engageable with the peripheral flange of the outer cylinder of the strut mount, it is possible to prevent the mounting cap from falling off the strut mount. Further, since the lower end of the cap body is configured to come into contact with the surface of the vehicle panel, the cap for mounting can be fixed without swinging.

  Furthermore, a plurality of leg portions are formed at predetermined intervals in the circumferential direction on the outer peripheral surface side of the lower end opening of the cap body. The leg portion is configured to engage with the outer surface side of the annular collar (wall portion) rising from the periphery of the installation hole (mounting installation hole) of the vehicle panel, and the lower end of the leg portion is in contact with the surface of the vehicle panel. Yes.

As a result, the mounting cap is slightly tilted, and one of the plurality of legs is in contact with the outer surface side of the annular collar, and the circumferential protrusion on the leg is moved to the peripheral flange of the outer cylinder. Can be engaged. Then, the cap body is tilted to a horizontal position with this leg as a fulcrum, the opposite circumferential protrusion is engaged with the peripheral flange of the outer cylinder, and the same leg is engaged with the outer surface of the annular collar. The mounting cap can be easily attached to the strut mount, and the working efficiency can be improved.
JP 2002-147518 A (paragraph [0006], FIG. 3 etc.)

  However, in the above-described conventional cap member, since the sealing performance of the joint portion between the vehicle panel and the strut mount is low, muddy water, rainwater, dust, etc. However, there is a problem in that the intrusion occurs at the joint between the vehicle panel and the strut mount, causing the performance of the strut mount to deteriorate.

  The present invention has been made to solve the above-described problems, and provides a cap member that can secure a sealing property of a joint portion between a vehicle panel and a strut mount and prevent entry of foreign matter. It is an object.

  In order to achieve this object, the cap member according to claim 1 has a main body configured from a rubber-like elastic body to a bottomed cylindrical body, and the main body is externally fitted to the strut mount. The strut mount is inserted and attached from below into a mounting hole provided in a vehicle panel in a state where the cap member is fitted, and the mount is used as a sound insulating member. In the installation hole, a flange-like wall portion is erected upward, and the main body portion extends from the outer peripheral surface to the outer side in the radial direction and continues in the circumferential direction. The first outer peripheral overhanging portion is located closer to the opening of the main body than the second outer peripheral overhanging portion, and the second outer peripheral overhanging portion is the first outer peripheral overhanging portion. The first outer periphery with a predetermined interval The projecting dimension of the first and second outer peripheral projecting portions is approximately parallel to the projecting portion, and the projecting dimension of the first and second outer peripheral projecting portions is determined by the distance between the opposing surfaces of the outer peripheral surface of the strut mount and the inner peripheral surface of the wall portion of the mount installation hole. When the strut mount is attached to the vehicle panel, the tip end portion of the first outer peripheral overhanging portion is held between the upper surface of the strut mount and the lower surface of the vehicle panel. At the same time, the distal end portion of the second outer peripheral overhanging portion is configured to come into contact with the inner peripheral surface of the wall portion of the mount installation hole.

  The cap member according to claim 2 is the cap member according to claim 1, wherein the main body portion includes one or a plurality of inner peripheral overhang portions that extend in the radial direction from the inner peripheral surface and continue in the circumferential direction. In the state where the main body portion is externally fitted to the strut mount, the inner peripheral overhanging portion is configured to be crimped to the outer peripheral surface of the strut mount by the elastic restoring force of the main body portion. .

  According to the cap member of the first aspect, the main body configured from the rubber-like elastic body to the bottomed cylindrical body is continuous in the circumferential direction while projecting radially outward from the outer circumferential surface thereof. The first outer periphery overhanging portion is disposed, and the overhanging dimension of the first outer periphery overhanging portion is larger than the distance between the opposing surfaces of the outer peripheral surface of the strut mount and the inner peripheral surface of the wall portion of the mount installation hole. Is set. As a result, when the strut mount is attached to the vehicle panel, the tip of the first outer peripheral overhanging portion is held between the upper surface of the strut mount and the lower surface of the vehicle panel. As a result, it is possible to prevent the entry of foreign matter such as rainwater, muddy water, and dust.

  Further, since the tip end portion of the first outer peripheral overhanging portion is held between the upper surface of the strut mount and the lower surface of the vehicle panel, the first outer peripheral overhanging portion is fixed to the strut mount, and the cap member is the strut mount. There is an effect that it can be prevented from falling off.

  Further, since the first outer peripheral overhanging portion is continuously arranged in the circumferential direction while projecting radially outward from the outer peripheral surface of the main body portion, the vehicle is always provided even when the cap member rotates around the axis. There is an effect that the sealing property of the joint portion between the panel and the strut mount can be secured, and the intrusion of foreign matters such as rain water, muddy water, and dust can be prevented.

  Further, at a position spaced apart from the first outer peripheral overhanging portion, the second outer peripheral overhanging portion that extends in the radial direction from the outer peripheral surface and extends in the circumferential direction is substantially parallel to the first outer overhanging portion. The projecting dimension of the second outer peripheral projecting portion is set larger than the distance between the opposing surfaces of the outer peripheral surface of the strut mount and the inner peripheral surface of the wall portion of the mount installation hole. As a result, in the state where the strut mount is attached to the vehicle panel, the tip of the second outer peripheral overhanging portion comes into contact with the inner peripheral surface of the wall portion of the mount installation hole. There is an effect that it is possible to secure sealing performance and prevent intrusion of foreign matters such as rainwater, muddy water, and dust.

  In addition, since the second outer peripheral overhanging portion is continuously arranged in the circumferential direction while projecting radially outward from the outer peripheral surface of the main body, even when the cap member rotates around the axis, the vehicle is always There is an effect that the sealing property of the joint portion between the panel and the strut mount can be secured, and the intrusion of foreign matters such as rain water, muddy water, and dust can be prevented.

  Further, as described above, the joint portion between the vehicle panel and the strut mount is secured by the two outer peripheral overhanging portions of the first and second outer peripheral overhanging portions. As compared with the case where only the sealing performance of the joint portion between the vehicle panel and the strut mount is ensured, there is an effect that the intrusion of foreign matters such as rainwater, muddy water, and dust can be more reliably prevented.

  In addition, the cap member achieves a function as a sound insulation member that blocks the impact sound of the strut mount and a function as a seal member that prevents the intrusion of foreign matter from the joint between the vehicle panel and the strut mount with one component at the same time. This eliminates the need to separately provide a seal member for preventing the intrusion of foreign matter, thereby reducing the number of parts and reducing the product cost accordingly.

  According to the cap member of the second aspect, in addition to the effect produced by the cap member of the first aspect, the main body portion includes an inner peripheral overhanging portion that extends in the radial direction from the inner peripheral surface and continues in the circumferential direction. ing. As a result, in the state in which the main body portion is externally fitted to the strut mount, the inner peripheral overhanging portion and the strut mount are in contact with each other, so that the main body portion is compared with the case where the inner peripheral surface of the main body portion is in contact with the strut mount. And the frictional resistance between the strut mount and the strut mount can be reduced. As a result, it is easy to externally fit the main body part to the strut mount, and the working efficiency can be improved.

  Here, when the strut mount is attached to the vehicle panel, the strut mount with the cap member fitted thereto is inserted from below into a mount installation hole provided in the vehicle panel. In this case, as described above, since the contact area between the inner peripheral overhanging portion and the strut mount is secured, the main body portion is prevented from sliding and the cap member is prevented from falling off the strut mount. be able to. As a result, there is an effect that the work efficiency can be improved.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of the strut mount 1 and shows a state where the strut mount 1 is mounted on the vehicle panel 7. First, the overall configuration of the strut mount 1 will be described with reference to FIG.

  The strut mount 1 is a member interposed between a shock absorber 21 for attenuating vertical vibration and a mounting portion on the vehicle side, and a core metal member 2 and a case body disposed around the core metal member 2. 3, a vibration isolating base 4 made of a rubber-like elastic body interposed between the case body 3 and the core metal member 2, a cover member 5 fixed to the lower surface side of the vibration isolating base 4, and the cover member 5 and a bound bumper seat 6 that supports a bound bumper (not shown) that is fixed to the lower surface side of 5.

  The metal core member 2 is a member having a substantially T-shaped cross section whose upper end protrudes in a flange shape in the direction perpendicular to the axis (left and right direction in FIG. 1), and the outer peripheral surface of the protruding portion is a fixing portion of the vibration isolating base 4. ing. A piston rod 22 is passed through a through hole 2a formed through the core metal member 2 in the axial direction (vertical direction in FIG. 1). By tightening the piston rod 22 with a fastening member 23 such as a nut, the piston rod 22 is fixed to the cored bar member 2.

  The case body 3 is erected in a direction perpendicular to the axis (vertical direction in FIG. 1) so as to cover the flat portion sandwiched between the vehicle panel 7 and the cover member 5 and the periphery of the cored bar member 2 from the flat portion. And the inner peripheral surface of the standing portion is a fixing portion of the vibration isolating base 4, and the outer peripheral surface is a fitting portion of a cap member 10 to be described later. Moreover, the upper part and the lower part of the standing part have openings, and the piston rod 22 can be inserted.

  The anti-vibration base 4 is a cylindrical rubber-like elastic body that connects the core metal member 2 and the case body 3, and is vulcanized and bonded to the core metal member 2 and the case body 3.

  The cover member 5 is arranged around the cored bar member 2, and the upper surface of the cover member 5 comes into contact with the lower surface side of the flat portion of the case body 3 and the lower surface side of the vibration isolation substrate 4, thereby connecting the case body 3 and the vibration isolation substrate 4. Hold.

  The bound bumper seat 6 is a cylindrical member that is disposed around the cored bar member 2 and the piston rod 22 and has a substantially corrugated cross section. The upper end portion is fixed to the cover member 5 and the lower end side is a bound bumper ( (Not shown).

  The vehicle panel 7 is provided with a mount installation hole, and the strut mount 1 is inserted from below the mount installation hole (downward in FIG. 1), and is formed through the vehicle panel 7, the case body 3 and the cover member 5. The strut mount 1 is fastened and fixed to the vehicle panel 7 by inserting the bolts 24 through the mounting holes.

  Note that a flange-like wall portion is formed in the mount installation hole of the vehicle panel 7 so as to stand upward from the peripheral portion thereof (upward in FIG. 1). The strut mount 1 is attached to the vehicle panel 7 with the cap member 10 fitted on the outer periphery of the case body 3.

  Here, the structure of the cap member 10 will be described with reference to FIG.

  2A is a top view of the cap member 10, FIG. 2B is a cross-sectional view of the cap member 10 taken along the line IIb-IIb in FIG. 2A, and FIG. FIG.

  As shown in FIG. 2, the cap member 10 includes a main body portion 11, a first outer peripheral overhang portion 12 and a second outer peripheral overhang portion 13 formed on the lower end outer peripheral surface of the main body portion 11, and the main body portion 11. A first inner peripheral overhanging portion 14 and a second inner peripheral overhanging portion 15 formed on the inner peripheral surface of the lower end are provided.

  The main body 11 is formed in a deep dish shape from a rubber-like elastic body, and is formed in a substantially circular shape in a top view as shown in FIG. The inner diameter of the main body 11 is set to be substantially the same as or slightly larger than the outer diameter of the standing portion of the case body 3 (see FIG. 1), and when the cap member 10 is externally fitted to the strut mount 1. Is configured such that the first and second inner peripheral overhanging portions 14 and 15 of the main body 11 abut on the outer peripheral surface of the case body 3 (standing portion).

  The axial dimension of the main body 11 (FIG. 2B, vertical dimension) is such that there is a gap between the tip of the piston rod 22 (see FIG. 1) and the inner peripheral upper surface of the main body 11 when a large displacement is input. It is set to be formed. Accordingly, even when the piston rod 22 vibrates up and down due to vibration during vehicle travel, the cap member 10 is prevented from falling off the strut mount 1 (see FIG. 1) due to the tip of the piston rod 22 pressing the main body 11. can do.

  In addition, although the main-body part 11 is comprised by the deep dish shape, it is not necessarily restricted to this, For example, you may comprise the upper surface of a main-body part in a substantially plane or a substantially circular arc shape. That is, it is sufficient that the main body portion 11 is fitted to the strut mount 1 so that the tip of the piston rod 22 does not press the upper surface of the main body portion 11 when the piston rod 22 is displaced maximum.

  The first outer peripheral overhanging portion 12 is formed so as to project radially outward from the outer peripheral surface of the lower end of the main body 11, and the overhanging dimension is the outer peripheral surface of the standing portion of the case body 3 (see FIG. 1) and the vehicle panel. 7 (see FIG. 1) is set to be larger than the distance between the opposing surfaces of the wall portion and the inner peripheral surface.

  As a result, when the strut mount 1 is attached to the vehicle panel 7 (see FIG. 1), the distal end portion of the first outer peripheral overhanging portion 12 is sandwiched between the upper surface of the strut mount 1 and the lower surface of the vehicle panel 7. Since it is held, it is possible to secure the sealing property of the joint portion between the vehicle panel 7 and the strut mount 1 and to prevent the entry of foreign matters such as rainwater, muddy water, and dust.

  Moreover, since the front-end | tip part of the 1st outer periphery overhang | projection part 12 is pinched and hold | maintained between the upper surface of the strut mount 1 and the lower surface of the vehicle panel 7, the 1st outer periphery overhang | projection part 12 is fixed to the strut mount 1, It is possible to prevent the cap member 10 from falling off the strut mount 1.

  Further, as shown in FIG. 2A, the first outer peripheral overhanging portion 12 is continuously arranged in the circumferential direction while projecting radially from the outer peripheral surface of the main body portion 11. Even when it rotates around the axis, it is always possible to ensure the sealing performance of the joint between the vehicle panel 7 and the strut mount 1 and prevent the entry of foreign matter such as rain water, muddy water, and dust.

  As shown in FIG. 2B, the second outer peripheral overhanging portion 13 is located above the first outer peripheral overhanging portion 12 (upward in FIG. 2B) and has a diameter from the outer peripheral surface of the main body portion 11. Projecting outwardly in the direction, the projecting dimension is between the opposing surfaces of the outer peripheral surface of the standing portion of the case body 3 (see FIG. 1) and the inner peripheral surface of the wall portion of the vehicle panel 7 (see FIG. 1). It is set larger than the distance.

  Thereby, in a state where the strut mount 1 is attached to the vehicle panel 7 (see FIG. 1), the tip end portion of the second outer peripheral overhanging portion 13 comes into contact with the inner peripheral surface of the wall portion of the vehicle panel 7. It is possible to secure the sealing property of the joint portion between 7 and the strut mount 1 and prevent the entry of foreign matter such as rainwater, muddy water, and dust.

  Further, as shown in FIG. 2 (a), the second outer peripheral overhanging portion 13 is continuously arranged in the circumferential direction while projecting radially from the outer peripheral surface of the main body portion 11, so that the cap member 10 is Even when it rotates around the axis, it is always possible to ensure the sealing performance of the joint between the vehicle panel 7 and the strut mount 1 and prevent the entry of foreign matter such as rain water, muddy water, and dust.

  Thus, since the sealing property is secured by the two outer peripheral overhanging portions 12 and 13 at the joint portion between the vehicle panel 7 and the strut mount 1, one outer peripheral overhanging portion is the vehicle panel 7 and the strut mount 1. As compared with the case of ensuring the sealing performance of the joint portion with rainwater, it is possible to more reliably prevent intrusion of foreign matters such as rainwater, muddy water, and dust.

  In this embodiment, the two outer projecting portions 12 and 13 are provided. However, the present invention is not necessarily limited to this, and three or more outer projecting portions are provided. May be.

  Further, the cap member 10 has a function as a sound insulation member that blocks the impact sound of the strut mount 1 and a function as a seal member that prevents intrusion of foreign matter from the joint portion between the vehicle panel 7 and the strut mount 1. Since it can be achieved simultaneously with parts, it is not necessary to separately provide a seal member for preventing the intrusion of foreign matters. As a result, the number of parts can be reduced and the product cost can be reduced.

  In addition, although the front-end | tip part of the 1st and 2nd outer periphery overhang | projection parts 12 and 13 is formed in the substantially circular arc shape, it is not necessarily restricted to this, For example, even if a front-end | tip part is comprised in a substantially triangular shape. good. In other words, any shape that can ensure a seal allowance when the distal ends of the first and second outer peripheral overhanging portions 12 and 13 are pressed or pressed is acceptable.

  As shown in FIG. 2C, the first inner peripheral overhanging portion 14 is continuously disposed in the circumferential direction while projecting radially inward from the lower end inner peripheral surface of the main body portion 11. The inner peripheral overhanging portion 15 is located above the first inner peripheral overhanging portion 14 (upward in FIG. 2 (c)), and extends inward in the radial direction from the inner peripheral surface of the main body portion 11 in the circumferential direction. It is arranged continuously.

  Thereby, in the state in which the main body 11 is externally fitted to the case body 3 (see FIG. 1), the first and second inner peripheral overhanging portions 14 and 15 come into contact with the outer peripheral surface of the case body 3, so that the main body The frictional resistance between the main body 11 and the case body 3 can be reduced as compared with the case where the inner peripheral surface of the body 11 is in contact with the case body 3. As a result, it is easy to externally fit the main body 11 to the case body 3, and work efficiency can be improved.

  Here, as described above, when the strut mount 1 (see FIG. 1) is attached to the vehicle panel 7 (see FIG. 1), the strut mount 1 in a state where the cap member 10 is externally provided is provided on the vehicle panel 7. Insert from below the mounting hole. In this case, since the contact area between the first and second inner peripheral projecting portions 14 and 15 and the strut mount 1 is ensured, the cap member 10 is prevented from sliding by the main body portion 11 being slid. 1 can be prevented from falling off. As a result, work efficiency can be improved.

  In this embodiment, the inner peripheral overhanging portions 14 and 15 are formed by two, but the present invention is not necessarily limited to this, and may be formed by one, or may be formed by three or more. May be. However, when the number of the inner peripheral overhanging portions is small, the contact area between the main body portion 11 and the strut mount 1 is reduced, so that the cap member 10 may fall off the strut mount 1. On the other hand, when the number of the inner peripheral overhang portions is large, the contact area between the main body portion 11 and the strut mount 1 increases, and a strong force is required when the cap member 10 is externally fitted to the case body 3. A decrease in efficiency occurs. Therefore, it is desirable that the inner peripheral overhanging portion is composed of about two to four.

  Moreover, although the front-end | tip part of the 1st and 2nd inner peripheral overhang | projection parts 14 and 15 is formed in substantially circular arc shape, it is not necessarily restricted to this, For example, a front-end | tip part is comprised in substantially triangular shape. Also good. In other words, any shape that can secure a contact area between the first and second inner peripheral overhanging portions 14 and 15 and the outer peripheral surface of the case body 3 when the tip end abuts on the outer peripheral surface of the case body 3 is acceptable.

  The present invention has been described based on the embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be easily made without departing from the spirit of the present invention. It can be guessed.

It is sectional drawing of a strut mount. (A) is a top view of the cap member, (b) is a cross-sectional view of the cap member taken along line IIb-IIb in FIG. 2 (a), and (c) is a partially enlarged cross-sectional view of the cap member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Strut mount 7 Vehicle panel 10 Cap member 11 Main-body part 12 1st outer periphery overhang | projection part 13 2nd outer periphery overhang | projection part 14 1st inner periphery overhang | projection part (a part of inner periphery overhang | projection part)
15 2nd inner circumference overhang part (a part of inner circumference overhang part)

Claims (2)

In a cap member used as a sound insulation member, having a main body configured from a rubber-like elastic body to a bottomed cylindrical body, and the main body being externally fitted to a strut mount,
The strut mount is inserted and attached from below into a mount installation hole provided in a vehicle panel with the cap member fitted, and a flange-like wall portion is formed in the mount installation hole. It is erected upward,
The main body portion includes first and second outer peripheral overhang portions that are continuous in the circumferential direction while projecting radially outward from the outer circumferential surface thereof.
The first outer peripheral overhanging portion is positioned closer to the opening side of the main body than the second outer peripheral overhanging portion, and the second outer peripheral overhanging portion has a predetermined interval from the first outer peripheral overhanging portion. The first outer peripheral overhanging portion is arranged in parallel with the gap,
The overhang dimension of the first and second outer peripheral overhang portions is set larger than the distance between the opposing surfaces of the outer peripheral surface of the strut mount and the inner peripheral surface of the wall portion of the mount installation hole,
In a state where the strut mount is attached to the vehicle panel, the distal end portion of the first outer peripheral overhanging portion is held between the upper surface of the strut mount and the lower surface of the vehicle panel, and the second A cap member characterized in that a tip end portion of an outer peripheral overhanging portion is configured to abut on an inner peripheral surface of a wall portion of the mount installation hole.   2. The cap member according to claim 1, wherein the main body portion includes an inner peripheral overhanging portion that extends inward in the radial direction from the inner peripheral surface thereof and continues in the circumferential direction.

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