Sound insulation member

Abstract

To provide a sound insulation member which enables reduction of assembly man-hours and achieves high robustness and sealability to improve sound insulation.SOLUTION: A sound insulation member includes: a fitting part which is fitted in an end of an inner weather strip; a seal part which fills a gap between the inner weather strip and a door inner panel; a vertical inner panel contact plate which contacts with an outer wall surface at a vehicle indoor side of the door inner panel; and a planar sandwiching plate which is elastically deformed by contacting with an inner wall surface at a door inner side of the door inner panel. The inner panel contact plate and the sandwiching plate respectively contact with the outer wall surface and the inner wall surface of the door inner panel, and are sandwiched between the plates at the door inner panel.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a sound insulation member provided on a vehicle door.

Background Art

[0002] Conventionally, a vehicle door has a door panel composed of a door outer panel and a door inner panel, and an inner weather strip and an outer weather strip disposed along the upper end portions of the door inner panel and the door outer panel, respectively.

[0003] Due to its structure, such a vehicle door forms a gap portion between the terminal portion of the door, that is, between the end portion of the inner weather strip and the door inner panel. This gap portion serves as a passage for air flowing between the inside and outside of the vehicle, and is a cause of leak sounds that are unpleasant inside the vehicle, such as road noise and wind noise generated along with the air flow during driving.

[0004] In order to prevent the generation of such leak sounds, for example, a sound insulation member has been proposed that includes a fitting portion that is fitted into at least one of the front and rear end portions of the inner weather strip disposed on the upper portion of the door inner panel, and a seal portion that closes the gap portion between the inner weather strip and the door inner panel (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in the above-described conventional sound insulation member, the robustness is low, and due to minute variations in vehicle door members such as inner weather strips and door inner panels, and vibrations during driving, a leak portion as an inadvertent gap opening is formed in the sealed portion, resulting in insufficient sealing performance and the generation of leak sounds.

[0007] Generally, minute differences in the dimensions of various vehicle door members such as inner weather strips and door inner panels and the subtle differences in the way they are assembled appear as minute differences in the shape of the opening edge of the gap portion for each manufactured vehicle door.

[0008] That is, according to the conventional sound insulation member, since it is configured to only cover the opening edge of the gap portion at the seal portion, when there are variations in the vehicle door members, the opening edge of the gap portion cannot be sufficiently sealed, and there is a possibility of inadvertently forming a leak portion.

[0009] For this reason, at the actual vehicle manufacturing site, for each manufactured vehicle door, after attaching the sound insulation member to the gap portion, it is necessary to determine whether a leak portion is formed at the sealed portion, and if there is a leak portion, additional reinforcement work such as applying a separate seal member to close it is required. As a result, there is a concern that the assembly man-hours cannot be reduced.

[0010] Furthermore, after the vehicle is manufactured, due to vibrations during vehicle driving and aging deterioration, the sound insulation member may be displaced or deformed from the gap portion, resulting in the formation of a leak portion between the seal portion and the upper end portion of the door inner panel.

[0011] The present invention has been made in view of such circumstances, and an object thereof is to provide a sound insulation member that can not only reduce assembly man-hours, but also realize high robustness and sealing performance to improve sound insulation performance.

Means for Solving the Problems

[0012] In order to solve the above-described conventional problems, in the present invention, (1) a fitting portion that is fitted into at least one of the front-door-side end or the rear-door-side end of an inner weather strip disposed at the upper part of a door inner panel, a seal portion that closes a gap between the inner weather strip and the door inner panel, a vertical inner panel contact plate that contacts an outer wall surface on the vehicle interior side of the door inner panel, and a flat sandwiching plate that contacts an inner wall surface on the inner side of the door of the door inner panel and elastically deforms, wherein the inner panel contact plate and the sandwiching plate are adjacent along the extending direction of the door inner panel, and are configured to contact the outer wall surface and the inner wall surface of the door inner panel located at the end of the inner weather strip, respectively, and sandwich and fix the door inner panel between the plates. A sound insulation member is provided.

[0013] Further, the sound insulation member according to the present invention has the following features (2) to (4). (2) The inner panel contact plate and the sandwiching plate each form an overlapping portion that extends in an alternating opposite direction on the upper and lower sides at the opposing side edges. (3) The inner panel contact plate and the sandwiching plate are each a protruding piece portion extending from a wall surface on the vehicle interior side of the seal portion. The sandwiching plate forms a V-shaped groove in a cross-sectional view together with the wall surface of the seal portion, and the inner panel contact plate is formed with at least a part thereof located above the sandwiching plate. (4) The end portion of the door inner panel has a straight portion that extends substantially linearly along the front-rear direction of the door, and an inclined portion that bends and inclines from the straight portion toward the vehicle interior side on the end side of the straight portion. The inner panel contact plate covers the straight portion and the inclined portion of the door inner panel from above and makes surface contact with each outer wall surface, and the sandwiching plate makes surface contact with the inner wall surface of the inclined portion of the door inner panel on the end side of the inner panel contact plate. (5) The end portion of the door inner panel has an extension portion branched from a portion sandwiched between the inner panel contact plate and the clamping plate, and an insertion portion for inserting the upper end portion of the extension portion is formed at the bottom of the seal portion.

Effect of the Invention

[0014] This According to the invention, a fitting portion fitted into at least one of the front end portion or the rear end portion of the inner weather strip disposed at the upper portion of the door inner panel on the door front side or the door rear side, a seal portion for closing a gap between the inner weather strip and the door inner panel, a vertical inner panel contact plate that contacts the outer wall surface on the vehicle interior side of the door inner panel, and a flat clamping plate that contacts the inner wall surface on the door inner side of the door inner panel and elastically deforms. Since it is configured to have these components, not only can the number of assembly steps be reduced, but also the gap portion between the end portion of the inner weather strip and the door inner panel can be surely closed, achieving high robustness and sealing performance and improving the sound insulation effect.

[0015] That is, the sound insulation member according to the present invention is attached to the end portion of the inner weather strip via a fitting portion, and the seal portion closes the gap portion to block leak sound.

[0016] Particularly in the present invention, the inner panel contact plate and the clamping plate are adjacent along the extending direction of the door inner panel, and are respectively in contact with the outer wall surface and the inner wall surface of the door inner panel located at the end portion of the inner weather strip to sandwich and fix the door inner panel between the plates. Therefore, it is possible to prevent the seal portion disposed in the gap portion from being displaced due to minute variations in the vehicle door members or vibrations during traveling, and the sound insulation member can be stably mounted in the gap portion between the door inner panel and the inner weather strip.

[0017] That is, when the sound insulation member is attached to the gap portion via the fitting portion, the clamping plate disposed on the inner side of the door of the door inner panel abuts against the inner wall surface of the door inner panel and elastically deforms, and its outer surface is in a state of being pressure-bonded to the inner wall surface.

[0018] In other words, the elastically deformed clamping plate constantly generates an elastic separating force that moves the sound insulation member as a whole from the inner wall surface of the door inner panel to the inner side of the door.

[0019] The inner panel contact plate to which the separating force of such a clamping plate is transmitted and is drawn to the inner side of the door is disposed on the vehicle interior side of the door inner panel, so that the inner surface portion is in a state of being pressure-bonded to the outer wall surface of the door inner panel facing it.

[0020] In this way, the sound insulation member firmly performs the wrapping function on the upper end portion of the door inner panel that forms the opening edge portion of the gap portion by bringing the side surface portions of the clamping plate and the inner panel contact plate into close contact with the inner and outer wall surface portions of the door inner panel from the inside and outside, sandwiching the door inner panel between the two plates, while closing the gap portion and being firmly attached to the door inner panel.

[0021] That is, according to the present invention, since each plate deforms and pressure-bonds along the opening edge portion of the gap portion, it allows for the shape difference of the opening edge portion and adapts to the subtle variations of the vehicle door member, and does not inadvertently form a leak portion at the sealing portion between the upper end portion of the door inner panel and the seal portion.

[0022] Therefore, it is possible to reduce the assembly man-hours and realize high robustness of the vehicle door, and there is an effect that the entire opening edge portion of the gap portion can be reliably sealed and the sound insulation performance can be improved.

[0023] Also, ThisAccording to the invention, since the inner panel contact plate and the clamping plate respectively form overlapping portions that extend in opposite directions alternately at the upper and lower sides at the opposing side edges, by overlapping the overlapping portions of each other alternately in the vertical direction and the inner and outer sides of the door inner panel, the sealing performance at the adjacent boundary portion between the clamping plate and the inner panel contact plate can be improved, and there is an effect that the sound insulation performance can be further improved.

[0024] Also, This According to the invention, the inner panel contact plate and the clamping plate are respectively projecting pieces extending from the wall surface on the vehicle interior side of the sealing portion. The clamping plate forms a V-shaped groove in a sectional view together with the wall surface of the sealing portion, and the inner panel contact plate is formed with at least a part thereof positioned above the clamping plate. Therefore, the clamping plate can be elastically deformed by bending like a leaf spring to generate a stronger elastic stress, and the contact area of each plate with the inner and outer wall surfaces of the door inner panel can be enlarged as much as possible, and there is an effect that the adhesion of each plate to the door inner panel can be enhanced.

[0025] Also, This According to the invention, the end portion of the door inner panel has a straight portion that extends substantially linearly along the front-rear direction of the door, and an inclined portion that bends and inclines from the straight portion toward the vehicle interior side on the end side of the straight portion. The inner panel contact plate covers the straight portion and the inclined portion of the door inner panel from above and is in surface contact with the respective outer wall surfaces, and the clamping plate is in surface contact with the inner wall surface of the inclined portion of the door inner panel on the end side of the inner panel contact plate. Therefore, the displacement of the sound insulation member in the front-rear direction using the bent shape of the door inner panel can be restricted, and the fixing of the sound insulation member to the gap portion can be made firm.

[0026] That is, the elastic stress that separates from the inner wall surface of the inclined portion generated by the clamping plate is transmitted to the inner panel contact plate, and the inner panel contact plate can be pressure-bonded to the bent portion formed by the straight portion and the inclined portion of the door inner panel, and the front and rear sides at the end of the door inner panel can be alternately clamped and engaged from the inside and outside by each plate.

[0027] Also, This According to the invention, the end portion of the door inner panel has an extension portion branched from the portion clamped by the inner panel contact plate and the clamping plate, and an insertion portion for inserting the upper end portion of the extension portion is formed at the bottom of the seal portion. Therefore, the sound insulation member is fitted and fixed to the extension portion of the door inner panel, and the fixing state of the sound insulation member that closes the gap portion can be made more firm, and the sound insulation performance can be stabilized.

Brief Description of the Drawings

[0028]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0029] The gist of the present invention is a fitting portion fitted into at least one of an end portion on the front side of the door or an end portion on the rear side of the door of an inner weather strip disposed at the upper portion of a door inner panel, a seal portion for closing a gap between the inner weather strip and the door inner panel, a vertical inner panel contact plate that contacts an outer wall surface on the vehicle interior side of the door inner panel, and a flat clamping plate that contacts an inner wall surface on the inner side of the door of the door inner panel and elastically deforms. The inner panel contact plate and the clamping plate are adjacent along the extending direction of the door inner panel, and are configured to contact the outer wall surface and the inner wall surface of the door inner panel located at the end portion of the inner weather strip, respectively, and sandwich and fix the door inner panel between the plates. It is an object of the present invention to provide a sound insulation member characterized by this.

[0030] Further, the inner panel contact plate and the clamping plate are each characterized in that they form overlapping portions that extend in opposite directions alternately at the upper and lower sides at opposite side edges.

[0031] Further, the inner panel contact plate and the clamping plate are each projecting pieces extending from a wall surface on the vehicle interior side of the seal portion. The clamping plate forms a V-shaped groove in a cross-sectional view together with the wall surface of the seal portion, and the inner panel contact plate is formed with at least a part thereof positioned above the clamping plate.

[0032] Further, an end portion of the door inner panel has a straight portion extending substantially linearly along the front-rear direction of the door, and an inclined portion that bends and inclines from the straight portion toward the vehicle interior side on the end side of the straight portion. The inner panel contact plate covers the straight portion and the inclined portion of the door inner panel from above and is in surface contact with the outer wall surfaces thereof, and the clamping plate is in surface contact with the inner wall surface of the inclined portion of the door inner panel on the end side of the inner panel contact plate.

[0033] Further, the end portion of the door inner panel has an extension portion branched from a portion sandwiched between the inner panel contact plate and the clamping plate, and is characterized in that an insertion portion for inserting the upper end portion of the extension portion is formed at the bottom of the seal portion.

[0034] Hereinafter, embodiments of the present invention will be described. In the following, the description will be given in the order of [1. Basic Structure of Vehicle Door] and [2. Sound Insulation Member]. In the following description, unless otherwise specified, the up and down sides are the up and down sides in the door up and down direction, the front and rear sides are the front side on the door center side and the rear side on the door end side in the door longitudinal direction, and the inner and outer sides are the inner side on the door thickness direction and the outer sides on the vehicle interior side and the vehicle exterior side other than the door inner side.

[0035] [1. Basic Structure of Vehicle Door] Hereinafter, the basic structure of a vehicle door including the sound insulation member according to the present embodiment will be described. FIGS. 1(a) and 1(b) are a side view and a partial enlarged perspective view of the door rear end, respectively, showing the structure of the vehicle door as viewed from the vehicle interior side, FIG. 2 is an upper perspective view showing a state where the sound insulation member is mounted in a gap between the inner weather strip and the door inner panel as viewed from the front side of the door, and FIG. 3 is a cross-sectional view taken along line A-A showing a state where the sound insulation member is mounted in a gap between the inner weather strip and the door inner panel.

[0036] As shown in Fig. 1(a), the vehicle door D basically includes a door panel D1 corresponding to the lower half of the vehicle door D and a weather strip D2 disposed along the upper edge of the door panel D1 and corresponding to the upper half of the vehicle door D.

[0037] The door panel D1 is hollow inside and is composed of a door inner panel D10 disposed inside the vehicle and an outer panel disposed outside the vehicle opposite to the door inner panel D10.

[0038] At the upper ends of the door inner panel D10 and the outer panel, an elongated inner weather strip D20 and an outer weather strip are disposed along the longitudinal direction, respectively.

[0039] Also, as shown in Fig. 1(b), a gap portion S communicating with the internal space of the vehicle door D is formed between the end of the inner weather strip D20 and the door inner panel D10 at the front and rear end portions of the vehicle door D.

[0040] Such a basic structure of the vehicle door D is common to various vehicle doors such as a front side door disposed on the front side of the vehicle, a rear side door disposed on the rear side of the vehicle, and a flush door excluding a door frame that functions as a window frame. sa That is, the sound insulation member A1 according to the present invention is not affected by the type of the vehicle door D. As the basic structure of the vehicle door D, as shown in Figs. 1(a) and 2, it is configured to improve the sound insulation property by closing the gap portion S inevitably formed between the inner weather strip D20 and the door inner panel D10.

[0041]

[0042] The inner weather strip D20 is provided at the upper end of the door inner panel D10 along the belt line of the vehicle.

[0043] ​Specifically, the inner weather strip D20 includes a plurality of protruding ridges D21 that protrude outward at predetermined intervals in the outer circumferential direction and extend along the longitudinal direction, and a lower fitting recess that is fitted and corresponds to the upper end portion of the door inner panel D10. A concave groove portion D22 that extends along the longitudinal direction in a side view and is concave in an end view is formed between the plurality of protruding ridges D21.

[0044] The end portion of the door inner panel D10 is bent and inclined in a plan view. As shown in FIG. 3, it has a straight portion D11 that extends substantially linearly along the front-rear direction of the vehicle door, and an inclined portion D12 that bends and inclines from the straight portion D11 toward the vehicle interior side on the end side of the straight portion D11.

[0045] Furthermore, as shown in FIGS. 1(b) and 3, the end portion of the door inner panel D10 has an extension portion D13 that branches from a portion sandwiched between the inner panel contact plate 30 and the clamping plate 40 of the sound insulation member A1 described later.

[0046] That is, the end portion of the door inner panel D10 branches in a bifurcated shape in a plan view. As shown in FIGS. 1(b) and 3, it has a straight portion D11 continuous from the central portion of the door inner panel D10, an inclined portion D12 on the outer side of the vehicle door D that bends and inclines from the straight portion D11 toward the vehicle interior side, and an extension portion D13 on the inner side of the vehicle door D that extends substantially linearly from the straight portion D11 toward the end side.

[0047] With respect to such a door inner panel D10, the inner weather strip D20 according to the present embodiment has an outer end portion D23 disposed near the straight portion D11 of the door inner panel D10 on the vehicle interior side with the door inner panel D10 as a boundary, and an inner end portion D24 that protrudes and extends toward the outermost end side of the vehicle door D from the outer end portion D23 and is disposed near the straight portion D11 and the extension portion D13 on the inner side of the vehicle door D.

[0048] Further, as shown in Fig. 1(a), at both ends of the front and rear sides of the door inner panel D10, a frame-shaped door frame D30 is erected with its base end portion attached inside the door panel D1. A gap portion S is formed on the inner side of the vehicle door near the base end portion of the door frame D30.

[0049] In other words, the gap portion S of the present embodiment forms an opening edge portion S1 (shown by a broken line in Fig. 1(b)) by the upper end portion D10c of the door inner panel D10, the end portions D23 and D24 of the inner weather strip D20, and the base end portion D31 of the door frame D30, and is formed at two locations on the front and rear side end portions of the door inner panel D10.

[0050] That is, as shown in Fig. 1(a), the sound insulation members A1 and A2 according to the present embodiment are attached to the front side end portion and the rear side end portion of the inner weather strip D20 in the front side door as the vehicle door D, and two are provided in each of the two gap portions S. Note that the sound insulation members A1 and A2 may be configured to be attached to either the front side end portion or the rear side end portion of the inner weather strip D20.

[0051] [2. Sound Insulation Member] Hereinafter, the sound insulation member A1 attached to the gap portion S at the rear side end portion of the door inner panel D10 and the inner weather strip D20 will be described as an example. Fig. 4 is an upper perspective view seen from the front side of the vehicle showing the configuration of the sound insulation member, Figs. 5(a) and 5(b) are a plan view and a side view seen from the vehicle interior side showing the configuration of the sound insulation member, Fig. 6 is a lower perspective view seen from the rear side of the vehicle showing the configuration of the sound insulation member, Fig. 7 is a bottom view showing the configuration of the sound insulation member, Figs. 8(a) and 8(b) are schematic plan views and schematic side views showing the mounting form in the gap portion between the inner panel contact plate and the clamping plate, and Figs. 9(a) and 9(b) are schematic longitudinal sectional views showing the morphological changes before and after mounting in the gap portion between the inner panel contact plate and the clamping plate.

[0052] This sound insulation member A1 is made of resin and is formed in a substantially square block shape as a whole. As shown in FIG. 4, it has a fitting portion 10 that is fitted into the end portion on the rear side of the door of the inner weather strip D20 disposed at the upper part of the door inner panel D10, a sealing portion 20 that closes the gap between the inner weather strip D20 and the door inner panel D10, a vertical inner panel contact plate 30 that contacts the outer wall surface D10a on the vehicle interior side of the door inner panel D10, and a flat clamping plate 40 that contacts the inner wall surface D10b on the inner side of the door of the door inner panel D10 and elastically deforms.

[0053] That is, as shown in FIGS. 4 to 6, the sound insulation member A1 integrally forms sealing function parts such as the fitting portion 10, the inner panel contact plate 30, and the clamping plate 40 on the outer peripheral side centered on the sealing portion 20.

[0054] Specifically, most of the sound insulation member A1 is a sealing portion 20 that closes the gap portion S and serves as the core of the sealing function. The inner panel contact plate 30 and the clamping plate 40 are formed side by side in the front-rear direction on one side wall 20c located on the vehicle interior side of the sealing portion 20, and the fitting portion 10 is formed on the front side wall 20b and the one side wall 20c located on the inner side of the door of the sealing portion 20.

[0055] The material of such a sound insulation member A1 is not particularly limited as long as it has excellent durability, weather resistance, and can be elastically deformed while having shape retention. For example, synthetic resins such as olefin-based elastomers (TPO) or ethylene-propylene-diene rubber (EPDM) can be adopted.

[0056] As shown in FIGS. 4 and 5(a), the sealing portion 20 is an internally hollow, capped rectangular tube-shaped block body that forms most of the sound insulation member A1, and is formed into a cap-shaped part that completely covers the gap portion S. That is, the sealing portion 20 is formed in a substantially similar planar shape that is slightly larger than the planar shape of the opening edge portion of the gap portion S in plan view.

[0057] As shown in FIG. 4, the seal portion 20 according to the present embodiment has a substantially trapezoidal square tube shape that gradually widens from the front to the rear, and as shown in FIG. 5(a), it includes a front half portion 21 having a rectangular shape in plan view and disposed on the front side (the door center side in the extending direction of the vehicle door D), and a rear half portion 22 having a pedestal shape in plan view and disposed on the rear side (the door outer end side in the extending direction of the vehicle door D).

[0058] Specifically, as shown in FIGS. 4 to 6, the seal portion 20 has an upper side that is substantially triangular in plan view Wall 2 0a, a front side wall 20b that hangs down at the outer edge of the upper side wall 20a and forms the outer peripheral side wall of the seal portion 20, and is disposed opposite to the end portion D23 of the inner weather strip D20, a side wall 20c disposed on the vehicle interior side, and another side wall 20d disposed on the door inner side, and is configured in a cap shape that is open downward and rearward.

[0059] As shown in FIG. 5(a), the side wall 20c includes a first side straight wall portion 21c that extends substantially linearly in the front-rear direction in the front half portion 21 in plan view, and a first side inclined wall portion 22c that protrudes obliquely inward from the first side straight wall portion 21c in the rear half portion 22.

[0060] In addition, the other side wall 20d includes a second side straight wall portion 21d that extends substantially linearly in the front-rear direction from the front half portion 21 to the middle of the rear half portion 22 in plan view, and a second side inclined wall portion 22d that protrudes obliquely inward from the second side straight wall portion 21d at the rear end of the rear half portion 22.

[0061] As shown in FIGS. 6 and 7, the seal portion 20 is provided with an inner cylindrical body 24 inside, and has a substantially double-cylindrical structure inside and outside by the inner cylindrical body 24 and the outer peripheral side wall. The inner cylindrical body 24 has a substantially triangular tube shape, and each cylindrical wall is disposed substantially parallel to each outer peripheral side wall of the seal portion 20, and hangs vertically from the substantially central portion of the upper side wall 20a (top surface) inside the seal portion 20 along the outer shape of the rear half portion 22 of the seal portion 20.

[0062] As shown in FIG. 7, the inner cylinder 24 is formed in a cylindrical shape by an inclined wall portion 22c on one side of the sealing portion 20 and an L-shaped cylindrical wall portion 25 that is connected at both ends to the inner surface of the same inclined wall portion 22c. That is, the other side wall of the inner cylinder 24 constitutes the inclined wall portion 22c on one side of the sealing portion 20.

[0063] Further, as shown in FIG. 7, an insertion portion 60 corresponding to be inserted into the upper end portion of the extension portion D13 of the door inner panel D10 is formed at the bottom of the sealing portion 20.

[0064] As shown in FIGS. 3, 4, and 7, the insertion portion 60 is formed as a vertically open notch portion 61 that vertically cuts the front side wall 20b from the lower end to the upper end at a predetermined position in the width direction of the front side wall 20b, and the Other side wall 20 d and Other side wall 20 d and the cylindrical wall portion 25 of the inner cylinder 24 that faces the side wall 20 at a certain interval, and is formed as a longitudinally slit portion that is substantially linear when viewed from the bottom surface.

[0065] Further, the insertion portion 60 has two pressing ribs 62 and 63 that press against both sides in the thickness direction of the extension portion D13 of the door inner panel D10 and sandwich the extension portion D13 therebetween.

[0066] Specifically, as shown in FIG. 7, the insertion portion 60 includes a vertical linear outer pressing rib 62 that protrudes outward from the inner surface of the other side wall 20d facing the base end portion of the extension portion D13 and presses the base end portion of the extension portion D13 from the outside, and a vertical linear inner pressing rib 63 that protrudes outward from the outer surface of the cylindrical wall portion 25 of the inner cylinder 24 facing the middle portion of the extension portion D13 and presses the middle portion of the extension portion D13 from the inside.

[0067] Thereby, the state in which the extension portion D13 of the door inner panel D10 is inserted into the insertion portion 60 is made strong, and the movement of the left and right sides of the sound insulation member A1 can be restricted.

[0068] Also, at a predetermined position of the seal portion 20, as shown in FIGS. 4 and 5(a), a plurality of bottomed cylindrical damping portions 50 are formed. The damping portions 50 are formed by recessing the upper wall 20a of the front half portion 21 of the seal portion 20 downward in a square shape and forming a plurality (three in this embodiment) adjacent to each other in the longitudinal direction (front-rear direction). One damping portion 50 has a substantially square cylindrical shape with an upper opening surrounded by a bottom wall 51 and side walls 52 facing each other.

[0069] Thereby, the noise that has entered the gap portion S between the door inner panel D10 and the inner weather strip D20 can be attenuated and silenced. Also, by providing a plurality of damping portions 50, the sound insulation member A1 can be hollowed out to reduce the overall weight, and the material cost can be reduced as much as possible.

[0070] In particular, since the damping portions 50 of the present embodiment are formed in a plurality adjacent to each other along the longitudinal direction in the front half portion 21 of the seal portion 20, the flowing air that concentrates on the triangular apex of the gap portion S can be surely blocked above and below with the position of the damping portion 50 as a boundary, and the vibration caused by the flowing air can be attenuated. Therefore, the mounting state of the sound insulation member A1 at the gap portion S can be stabilized as much as possible.

[0071] The fitting portion 10 is formed in an uneven shape in accordance with the shape of the end portion of the inner weather strip, and includes a fitting protrusion 11 that is inserted and fitted from the end face side and a fitting flange 12 that is inserted and fitted from the outer peripheral side with respect to the concave groove portion D22 and the fitting recess at the end portion of the inner weather strip D20, as shown in FIGS. 4, 5(a), and 6.

[0072] As shown in FIGS. 4 to 6, the fitting protrusion 11 includes a front protrusion 11a formed to protrude forward from the front side wall 20b of the seal portion 20 and Other a side inclined wall portion 22 d formed to protrude forward from the rear end side of the other side wall 20d of the seal portion 20.

[0073] In other words, the front side wall 20b of the seal portion 20 and Other a side inclined wall portion 22 dThat is, in a state where the sound insulation member A is fitted to the end portions D23 and D24 of the inner weather strip D20 via the fitting portion 10, it functions as an abutment regulating surface portion where the end surfaces of the end portions D23 and D24 of the inner weather strip D20 abut against each other.

[0074] As shown in FIGS. 4 to 6, the fitting protrusion 11 is composed of a front protrusion 11a formed to protrude forward from the front side wall 20b of the seal portion 20 and the other side Inclination wall portion 2 2 formed to protrude forward from the wall surface of d and a rear protrusion 11b.

[0075] These front protrusions 11a and rear protrusions 11b can be inserted from the end surface side of the inner weather strip D20 (the extending direction side of the inner weather strip D20 orthogonal to the groove depth direction) into the groove portion D22 or the fitting recess at the end of the inner weather strip D20.

[0076] As shown in FIGS. 4, 5(a), and 6, the fitting flange 12 is an elongated strip plate, and is formed to protrude toward the inside of the door from the upper and lower middle portions of the side wall 20 Other on the inside of the door of the seal portion 20 and extend in the front-rear direction of the seal portion 20. It can be inserted into the groove portion D22 at the end of the inner weather strip D20 from the outer peripheral side (groove depth direction side) of the inner weather strip D20. d side wall 20

[0077] Further, as shown in FIGS. 4, 5(a), and 6, the fitting portion 10 is configured to have upper and lower covering portions 13 and 14 that cover the inner weather strip D20 from above and below along the longitudinal direction, and reinforce the regulating force for the vertical movement of the sound insulation member A1 fitted to the inner weather strip D20.

[0078] The upper covering portion 13 is substantially L-shaped in plan view and is located above the front protrusion 11a, the rear protrusion 11b, and the fitting flange 12, and is on the side wall 20 Other side wall 20 dIt is formed to protrude outward so as to be continuous with each upper edge of the front side wall 20b. As a result, the upper surface of the end portion of the inner weather strip D20 and the protruding portion on the vehicle interior side are covered from above and are in surface contact.

[0079] The lower covering portion 14 is in the shape of a rectangular strip plate in plan view, and is located below the front protrusion 11a, the rear protrusion 11b, and the fitting flange 12, and is formed to protrude outward from the lower edge of the side wall 20 of the seal portion 20. Other side wall 20 d As a result, the bottom surface of the end portion of the inner weather strip D20 is covered from below and is in surface contact.

[0080] That is, the fitting portion 10 is configured such that, on the outer peripheral side of the inner weather strip D20, the protruding portion of the inner weather strip D20 is inserted and disposed in the gap formed between the upper covering portion 13 and the fitting flange 12, the fitting flange 12 is inserted and disposed in the groove portion D22 of the inner weather strip D20, and on the end side of the inner weather strip D20, the fitting protrusion 11 is inserted and disposed in the opposing groove portion D22, and further covered from above and below by the upper and lower covering portions 13 and 14.

[0081] In addition, as shown in FIGS. 4 to 6, a seal lip 70 is extended at the rear end edge portion on the rear side of the door of the seal portion 20. Specifically, the seal lip 70 is a flange-shaped strip having a predetermined width formed along the rear end edge portions of the upper side wall 20a and one side wall 20c of the seal portion 20, and is formed to expand and extend rearward and outward from the rear end edge portion.

[0082] The seal lip 70 is formed to be elastically deformable, and as shown in FIG. 2, it is elastically pressed against the base end portion of the door frame D30 forming the opening edge portion S1 of the gap portion S so as to be able to seal the gap portion S.

[0083] Also, as shown in FIG. 6, a plurality of contact ribs 71 are formed below the seal lip 70 and extend to the outermost end side of the door inner panel D10 and contact the base end surface portion of the door frame D30. Each of the contact ribs 71 is formed by extending rearward from the rear side cylindrical wall portion 25 of the inner cylindrical body 24.

[0084] As shown in FIGS. 2, 4 to 6, the inner panel contact plate 30 and the clamping plate 40 are formed adjacent to each other along the extending direction of the door inner panel D10, and are configured to contact the inner wall surface and the outer wall surface of the door inner panel D10 located at the end portion of the inner weather strip D20, respectively, and clamp and fix the door inner panel D10 between the plates.

[0085] That is, as a remarkable point of the present invention, since the sound insulation members A1 and A2 are formed by adjacent inner panel contact plates 30 and clamping plates 40, as shown in FIG. 2, the respective plates are alternately arranged in the longitudinal direction (front-rear direction) and the thickness direction of the door inner panel D10, and the door inner panel D10 arranged between the plates is sandwiched from both sides by the elastically deformed clamping plate 40, and can be brought into close contact with the opening edge portion S1 (upper end portion D10c) of the gap portion S from the inside and outside.

[0086] The inner panel contact plate 30 and the clamping plate 40 are each formed as an elastically deformable protruding piece extending from the wall surface of one side wall 20c on the vehicle interior side of the seal portion 20.

[0087] As shown in FIGS. 3, 7 and 9(b), the inner panel contact plate 30 is a portion that covers the bent portion of the straight portion D11 and the inclined portion D12 of the door inner panel D10 from above, and is configured to contact the outer wall surface D10a of the door inner panel D10.

[0088] Specifically, the inner panel contact plate 30 enables the door inner panel D10 to be disposed at the front side of the seal portion 20 and inside the corner portion on the vehicle interior side. As shown in FIGS. 3, 7, and 9(b), it is composed of an inner panel cover portion 23 corresponding to the lower half of the front one-side corner portion of the seal portion 20, and a panel contact lip 31 formed over the entire outer peripheral edge of the inner panel cover portion 23.

[0089] As shown in FIGS. 3 and 4, the inner panel cover portion 23 has a substantially L-shaped cross-sectional view. It has a notch portion 61 formed by notching at a predetermined position of the front side wall 20b, and at the boundary portion between the one-side straight wall portion 21c and the one-side inclined wall portion 22c of the seal portion 20, a notch portion 64 formed by vertically notching the side edge of the one-side straight wall portion 21c from the lower end to the middle portion, so that the door inner panel D10 can be inserted in a substantially front-rear direction side and formed to be disposed inside.

[0090] Also, as shown in FIGS. 4 and 5(b), the panel contact lip 31 is an elastic deformable substantially L-shaped and flat strip plate in cross-sectional view With the body which extends along the outer peripheral edge of the inner panel cover portion 23, protrudes outward, and hangs down in a downwardly expanding shape.

[0091] When the door inner panel D10 is disposed inside the inner panel contact plate 30 having such a configuration and the elastic force from the clamping plate 40 described later is transmitted, as shown in FIGS. 3 and 9(b), both side edge portions of the panel contact lip 31 and the inner panel cover portion 23 (portions corresponding to both ends of the substantially L-shaped L in cross-sectional view) contact the outer wall surface D10a of the door inner panel D10.

[0092] As shown in FIGS. 2, 3, and 7, the clamping plate 40 is configured to be in surface contact with the inner wall surface D10b of the inclined portion D12 of the door inner panel D10 on the end side further than the end portion covered by the inner panel contact plate 30.

[0093] Specifically, the clamping plate 40 is an elastically deformable flat strip body. As shown in FIGS. 4 to 5(b), it is formed as a panel pressing lip 41 that protrudes outward from one side wall 20c on the vehicle interior side of the seal portion 20 at one side inclined wall portion 22c of the rear half portion 22 of the seal portion 20 and has its tip directed upward in the inclined direction.

[0094] Also, as shown in FIGS. 4, 5(b), 9(a) and 9(b), the clamping plate 40 Of positions a part below the clamping plate 40 and forms a V-shaped groove in cross section together with the wall surface of the seal portion 20 (the wall surface of one side wall 20c).

[0095] In other words, as shown in FIGS. 2 and 9(b), when an external force directed toward the inside of the door (the seal portion 20 side) is applied to the clamping plate 40 via the outer surface 41a, the clamping plate 40 is formed as a leaf spring portion in a folded form in which the base end portion is bent and elastically deformed so that the tip end portion is directed upward, and constantly generates an elastic force directed toward the outer side of the seal portion 20 that opposes and repels the external force in the folded form.

[0096] Also, as shown in FIGS. 5(b), 8(b) to 9(b), the clamping plate 40 attaches the base end portion of the panel pressing lip 41 to a lower portion of one side inclined wall portion 22c that is located below the upper end portion (the middle portion in the vertical direction of one side straight wall portion 21c) of the inner panel cover portion 23 in at least one side straight wall portion 21c.

[0097] As a result, the clamping plate 40 disposed on the inside of the door of the door inner panel D10 abuts against the inner wall surface D10b of the door inner panel D10 from the inside of the door and elastically deforms, and its outer surface 41a is in a state of being pressure-bonded to the inner wall surface D10b.

[0098] That is, as shown in FIG. 9(b), the clamping plate 40 that is elastically deformed and forms a folded shape on the inner side of the door has the tip of the panel pressure contact lip 41 of the clamping plate 40 located above and at substantially the same height as the base end of the inner panel contact plate 30 in a side view, and constantly generates an elastic separation force that moves the sound insulation member A1 as a whole toward the inner side of the door from the inner wall surface D10b of the door inner panel D10.

[0099] Due to the elastic force of such a clamping plate 40, the inner panel contact plate 30 will be pulled toward the inner side of the door.

[0100] As shown in FIGS. 9(a) and 9(b), such an inner panel contact plate 30 is disposed on the vehicle interior side of the door inner panel D10, that is, on the outer wall surface D10a side, so that its inner surface is pressure-bonded to the outer wall surface D10a of the door inner panel D10 facing it.

[0101] In this way, as shown in FIGS. 2 and 9(b), the inner panel contact plate 30 and the clamping plate 40 of the sound insulation member A1 are in close contact with the outer wall surface D10a and the inner wall surface D10b of the upper end portion D10c of the door inner panel D10, respectively, with the door inner panel D10 interposed therebetween, clamp the door inner panel between the two plates, and firmly perform the lapping function of the upper end portion D10c of the door inner panel D10 that forms the opening edge portion S1 of the gap portion S.

[0102] Also, as shown in FIGS. 8(a) and 8(b), the inner panel contact plate 30 and the clamping plate 40 respectively form overlapping portions 32 and 42 that extend in opposite directions alternately in the vertical direction at the opposing side edges.

[0103] Specifically, the overlapping portion 32 of the inner panel contact plate 30 is a part of the panel contact lip 31, and is formed by extending the side edge near the base end portion to the rear side.

[0104] Further, the overlap portion 42 of the clamping plate 40 is formed by extending the side edge of the tip end portion forward. The overlap portion 42 of the clamping plate 40 is formed by gradually increasing the width from the base end portion to the tip end portion of the panel pressure contact lip 41.

[0105] Further, at the base end portion of the inner panel contact plate 30 facing the side edge of the clamping plate 40, a lap insertion portion 33 is formed for the overlap portion 42 of the clamping plate 40 to fit into the gap portion S when the clamping plate 40 is in a bent form inside the door with the sound insulation member A. The lap insertion portion 33 is formed by linearly notching a part of the protruding upper surface of the base of the inner panel cover portion 23 forward.

[0106] Thus, when the door inner panel D10 is disposed between the two plates 30 and 40 and the clamping plate 40 is in a folded form, as shown in FIG. 8(b), the overlap portion 42 at the tip end portion of the panel pressure contact lip 41 of the clamping plate 40, which is positioned at substantially the same height as the base end portion of the inner panel contact plate 30 in a side view, is located inside the overlap portion 32 of the inner panel contact plate 30.

[0107] In such a state, the overlap portions 32 and 42 face the outer wall surface D10a and the inner wall surface D10b of the door inner panel D10 and cross and overlap each other in a side view, fulfilling the lapping function of the gap portion S. Further, as shown in FIG. 8(a), when the overlap portion 42 fits into the lap insertion portion 33, the folded form of the clamping plate 40 can be stabilized and the overlapping state can be made firm.

[0108] As described above, according to the present invention, there is an effect that a sound insulation member can be attached to the end portion of the inner weather strip via a fitting portion, and the gap portion can be closed by the seal portion of the sound insulation member to sound-insulate leak sounds such as road noise and wind noise.

[0109] In particular, the inner panel contact plate and the clamping plate can prevent the seal portion disposed in the gap from being displaced due to minute variations in the vehicle door member or vibrations during driving, and there is an effect that the sound insulation member can be stably mounted in the gap between the door inner panel and the inner weather strip.

[0110] Further, since the inner panel contact plate 30 and the clamping plate 40 are each formed with overlapping portions 32 and 42 that extend in opposite directions alternately on the upper and lower sides at the opposing side edges, by overlapping the respective overlapping portions 32 and 42 of each other alternately in the vertical direction and the inner and outer sides of the door inner panel, the sealing performance at the adjacent boundary portion between the clamping plate 40 and the inner panel contact plate 30 can be improved, and there is an effect that the sound insulation performance can be further improved.

[0111] Further, the inner panel contact plate 30 and the clamping plate 40 are each projecting pieces extending from the wall surface on the vehicle interior side of the seal portion 20. The clamping plate 40 forms a V-shaped groove in cross-section together with the wall surface of the seal portion 20, and the inner panel contact plate 30 is formed with at least a part thereof positioned above the clamping plate 40. Therefore, the clamping plate 40 can be bent and elastically deformed like a leaf spring to generate a stronger elastic stress, and the contact area of each of the plates 30 and 40 with the inner and outer wall surfaces D10a and D10b of the door inner panel D10 can be expanded as much as possible, and there is an effect that the adhesion of each of the plates 30 and 40 to the door inner panel D10 can be enhanced.

[0112] Further, the inner panel contact plate 30 covers the straight portion D11 and the inclined portion D12 of the door inner panel D10 from above and is in surface contact with the respective outer wall surfaces D10a, and the clamping plate 40 is in surface contact with the inner wall surface D10b of the inclined portion D12 of the door inner panel D10 on the end side rather than the inner panel contact plate 30. Therefore, it is possible to regulate the displacement of the sound insulation member A1 in the front-rear direction by utilizing the bent shape of the door inner panel D10, and there is an effect that the fixing of the sound insulation member A1 to the gap portion S can be made firm.

[0113] In addition, since the fitting portion 60 for fitting and inserting the upper end portion of the extending portion D13 of the door inner panel D10 is formed at the bottom portion of the seal portion 20, the sound insulation member A1 can be more firmly fixed by fitting and fixing the sound insulation member A1 to the extending portion D13 of the door inner panel D10 to close the gap portion S, and there is an effect that the sound insulation performance can be stabilized.

[0114] That is, according to the present invention, there is an effect that it is possible to provide a sound insulation member that can not only reduce the assembly man-hours, but also realize high robustness and sealing performance to improve the sound insulation performance.

[0115] Finally, the description of each of the above-described embodiments is an example of the present invention, and the present invention is not limited to the above-described embodiments. Of course, various modifications can be made according to the design and the like as long as they do not depart from the technical idea of the present invention even if they are other than the above-described embodiments.

Explanation of reference numerals

[0116] D Vehicle door D10 Door inner panel D20 Inner weather strip D30 Door frame A1 Sound insulation member 10 Fitting portion 20 Seal portion 30 Inner panel contact plate 40 Clamping plate

Claims

1. A fitting portion that is fitted into at least one of the front end or the rear end of the inner weather strip disposed at the upper part of the door inner panel on the door side; A seal portion that closes the gap between the inner weather strip and the door inner panel; A vertical inner panel contact plate that contacts the outer wall surface on the vehicle interior side of the door inner panel; A flat sandwiching plate that contacts the inner wall surface on the inner side of the door of the door inner panel and elastically deforms, and has: The inner panel contact plate and the sandwiching plate are each a protruding piece portion extending from the wall surface on the vehicle interior side of the seal portion; The inner panel contact plate and the sandwiching plate are adjacent to each other in the extending direction of the door inner panel, and are configured to contact the outer wall surface and the inner wall surface of the door inner panel located at the end of the inner weather strip, respectively, and sandwich and fix the door inner panel between the plates. A sound insulation member characterized by that.

2. The sound insulation member according to claim 1, wherein the inner panel contact plate and the sandwiching plate each form an overlapping portion that extends in an alternating direction in the vertical direction at the opposing side edges.

3. The sandwiching plate forms a V-shaped groove in a cross-sectional view together with the wall surface of the seal portion, and the inner panel contact plate is formed with at least a part thereof located above the sandwiching plate. The sound insulation member according to claim 1 or claim 2, characterized by that.

4. A fitting portion that is fitted into at least one of the front end or the rear end of the inner weather strip disposed at the upper part of the door inner panel on the door side; A seal portion that closes the gap between the inner weather strip and the door inner panel; A vertical inner panel contact plate that contacts the outer wall surface on the vehicle interior side of the door inner panel; A flat sandwiching plate that contacts the inner wall surface on the inner side of the door of the door inner panel and elastically deforms, and has: The inner panel contact plate and the sandwiching plate are adjacent to each other along the extending direction of the door inner panel, and are configured to contact the outer wall surface and the inner wall surface of the door inner panel located at the end of the inner weather strip, respectively, and sandwich and fix the door inner panel between the plates. The end portion of the door inner panel has a straight portion that extends substantially linearly along the front-rear direction of the door, and an inclined portion that bends and inclines from the straight portion toward the vehicle interior side on the end side of the straight portion. The inner panel contact plate covers the straight portion and the inclined portion of the door inner panel from above and is in surface contact with the outer wall surfaces thereof. The clamping plate is a sound insulation member characterized by being in surface contact with the inner wall surface of the inclined portion of the door inner panel on the end side of the inner panel contact plate.

5. A fitting portion fitted into at least one of the front end or the rear end of the inner weather strip disposed at the upper part of the door inner panel on the door front side or the door rear side. A seal portion for closing the gap between the inner weather strip and the door inner panel. A vertical inner panel contact plate that contacts the outer wall surface on the vehicle interior side of the door inner panel. A flat clamping plate that contacts the inner wall surface on the door inner side of the door inner panel and elastically deforms. The inner panel contact plate and the clamping plate are adjacent along the extending direction of the door inner panel, and are configured to contact the outer wall surface and the inner wall surface of the door inner panel located at the end of the inner weather strip respectively, and to clamp and fix the door inner panel between the plates. The end portion of the door inner panel has an extended portion branched from the portion clamped by the inner panel contact plate and the clamping plate. A sound insulation member characterized in that an insertion portion for inserting the upper end portion of the extended portion is formed at the bottom of the seal portion.

Images