JP4733090B2 - Grommet assembly - Google Patents

Description

  The present invention relates to a grommet assembly that extends from the inside of a passenger compartment to the outside through a vehicle body (body panel) of a vehicle.

  The transmission control cable connects the transmission lever device in the passenger compartment to the transmission outside the passenger compartment, and transmits the lever operation by the driver to the transmission. The control cable is a body panel that partitions the exterior of the passenger compartment. Need to penetrate. And it is necessary to employ | adopt the suitable structure which dust, water, etc. do not penetrate | invade in a penetration part.

  In view of this, there has been conventionally known an object of providing a two-point tightening type cable penetrating structure in which a good sealing state can be obtained without causing an increase in cost and component mass (see Patent Document 1).

  According to the through structure of the transmission control cable for the body panel according to the invention described in Patent Document 1, the retainer is fixed to the body panel at two fixing points sandwiching the cable opening, and the two fixing points are connected. In a structure in which the offset distance to the retainer edge is different on both sides of the fixed line, a retainer inclined portion that is inclined toward the body panel is provided on the side where the offset distance of the retainer is large. When the retainer is fixed to the body panel, the retainer inclined portion is elastically deformed so as to warp in the direction opposite to the body panel. This elastic deformation generates an auxiliary pressing force for the retainer to press the grommet, and the addition of this auxiliary pressing force compensates mainly for the sealing force on the side where the offset distance is large, and the sealing force on both sides of the fixed line is uneven. Is reduced.

  Conventionally, a remote control type shift operation mechanism employing a push-pull cable is known as a shift operation mechanism configured to absorb relative movement between a transaxle and a body panel.

  In this type of operation mechanism that allows the control cable to pass through the floor panel of the vehicle body, a part of the floor panel is opened, so that foreign matter and sound such as water, exhaust gas, or dust that bounce off the road surface enter the vehicle interior. It is necessary to seal the opening to prevent it. On the other hand, it is necessary to be able to easily assemble the member to be sealed and the long control cable.

  As a structure that satisfies these conditions, a hole for conducting a control cable connected to the transmission is formed in the floor panel of the vehicle, and rubber grommets are tightly connected to this hole. It is also known that it has been fitted. The grommet is formed with a through hole for covering and holding the outer peripheral portion of the control cable and a slit connected to the through hole. Further, a protector made of sponge rubber is fitted in the slit. The transmission is installed outside the room.

  In such a structure, with the control cable pre-conducted to the hole in the floor panel, the intermediate part of the control cable is guided to the through hole while passing through the slit, and the grommet is attached to the hole, A protector is attached to the outdoor side (road surface side) surface.

  Therefore, the assembling work of the control cable to the vehicle body can be easily performed, and foreign matter can be prevented from entering the room through the through hole. However, in such a support structure, the grommet itself is elastic to some extent. Since it can be deformed, there is a technical problem that a slit connected to the through hole is opened by a pressing force directed from the inside to the outside of the through hole by inserting the protector. Such a problem may occur due to a shift in the mounting posture of the control cable or the grommet, and the problem that foreign matter or exhaust gas or the like entering the room due to the opening of the slit cannot be prevented sufficiently. there were.

  The invention described in Patent Document 2 has a technical problem of providing a through structure (support structure) for a control cable of a transmission with high sealing performance.

  And in order to solve such a technical problem, the control cable connected to the transmission is inserted into the opening formed in the vehicle body panel so as to extend from the interior of the vehicle to the outside of the vehicle, and is inserted into the control cable insertion hole. In the control cable support structure of the transmission in which the grommet having a leading slit is attached to the opening portion and the opening portion is sealed and the control cable is held by the grommet, the grommet is attached to the body panel and fixed. A member is provided, and a pressing means for applying a load to the grommet in a direction in which the slit is closed is provided on the holding member.

  And by such a solution, in the state where the grommet is attached to the body panel by the holding member, the pressing force in the direction of closing the slit is always applied to the grommet by the pressing portion, and the wall surfaces of the slit are sealed, for example, the road surface Thus, foreign matter such as water, exhaust gas, dust, etc. or outside air that bounces off from the vehicle does not pass through the grommet and enter the vehicle interior.

JP 2000-85395 A Japanese Patent Laid-Open No. 9-240303

  The control cable penetrating structure described in Patent Documents 1 and 2 is, in short, a grommet that constitutes the penetrating structure includes a metal plate and a rubber packing. In order to solve this problem, a one-touch assembly type control cable penetrating structure in which a claw is provided on the grommet side has come out.

  However, in the case of the one-touch assembly type control cable penetration structure, the grommet is press-fitted into the through hole of the vehicle body by pushing a predetermined position of the grommet. For this reason, since the grommet will bend if the rigidity of the grommet itself is not high, there is a new technical problem that it is difficult to press-fit the grommet into the through hole of the vehicle body.

  Therefore, in the grommet that is integrally molded with rubber, solutions are proposed such as thickening the pressing part or combining with a metal plate, but in any case, the weight of the grommet itself increases, leading to an increase in cost. There are technical challenges.

  An object of the present invention is to provide a grommet assembly that solves such technical problems and can be easily press-fitted into a through hole of a vehicle body and is light in weight.

The grommet assembly of the present invention includes a grommet made of an elastomeric material press-fitted into the opening hole,
A flange is provided at the periphery, and is detachably attached to the back surface of the grommet, and is formed of a rigid cylindrical body with a flange provided at the periphery of one end thereof.
While providing a portion where the thickness in the front and back direction is thicker than the thickness in the front and back direction of the peripheral part of the grommet on the inner peripheral side from the peripheral edge of the grommet ,
A plate extending toward the axial direction of the cylindrical body is provided on the inner surface of the cylindrical body,
When the grommet and the tubular body are fitted and attached, one end of the plate is in contact with the thick part of the grommet.

  Moreover, it is preferable that the said plate is provided radially.

  Moreover, the said to-be-inserted object can be wiring, such as a control cable and an electric wire.

According to the present invention, a plate extending toward the axial direction of the cylindrical body is provided on the inner surface of the cylindrical body,
When the grommet and the tubular body are fitted and attached, it is required that one end of the plate comes into contact with the thick part of the grommet, so that it can be easily press-fitted into the through hole of the vehicle body and the weight is increased. A light grommet assembly can be provided.

  The grommet assembly of the present invention will be described in detail below with reference to the accompanying drawings.

  FIG. 1A is an explanatory plan view showing an example of a cylindrical body constituting the grommet assembly of the present invention, and FIG. 1B is a partial sectional explanatory view showing a radial plate constituting the cylindrical body, FIG. FIG. 3 is an explanatory plan view showing an example of a grommet constituting the grommet assembly of the present invention, FIG. 3 is a partial sectional explanatory view of the grommet, FIG. 4 is a perspective view showing an example of the grommet assembly of the present invention, and FIG. It is explanatory drawing which shows the assembly | attachment procedure of a cable.

  1-4, the grommet assembly G of the present invention is made of an elastomeric material (for example, ethylene / propylene / diene rubber (EPDM) or the like) that is liquid-tightly pressed into an opening provided in a vehicle body such as a vehicle. A grommet (plate-like body) 2 and a grommet 2 that are preferably employed) in order to guide an inserted object such as an electric wire (wiring) or a control cable from the inside of the vehicle body to the outside. And a cylindrical body 1 having rigidity and having a flange 1a at the periphery of one end thereof. As a material of the cylindrical body 1, for example, a polyamide resin or the like is preferably employed. In this Embodiment, it is not restricted to the structure by which to-be-inserted objects, such as a control cable, are press-fitted in an opening hole via the bush 2a provided in the grommet 2. FIG. For example, a configuration in which an opening hole is simply provided in the grommet 2 and an insertion object such as a control cable is press-fitted into the opening hole may be employed.

  As shown in FIGS. 2 to 3, an object to be inserted such as a control cable is led out from the inside of the vehicle body through a through hole 2 b formed in a bush 2 a provided in the grommet 2. The inner surface of the through-hole 2b is formed with irregularities 2c. When the object to be inserted is inserted into the through-hole 2b, a labyrinth is defined between the object to be inserted and the through-hole 2b. There is an advantage that rainwater or the like can be prevented from entering between the object and the through hole 2b.

As shown in FIG. 3 , the flange 1 a of the cylindrical body 1 is detachably attached to a recess 2 r provided on the back surface R side of the grommet 2. That is, the flange portion 1a is fitted by a folded portion 2p formed by folding a peripheral edge 2s on one end side of the grommet 2. Further, as shown in FIG. 1B, a thick portion is formed in the grommet 2 on the inner peripheral side from the recess 2r (see FIG. 3) of the grommet 2, and the plate is provided radially. The end portion 1 da of 1 d and the inner surface 2 e of the thick portion of the grommet 2 can come into contact with each other.

  A projecting portion 1 b that partially closes the opening OP of the tubular body 1 is formed integrally with the main body 1 c of the tubular body 1 on the other end side of the tubular body 1. Needless to say, it is not essential that the protruding portion 1 b is formed integrally with the main body 1 c of the cylindrical body 1, and the protruding portion 1 b can be provided separately from the cylindrical body 1. And included in the present invention. The distal end of the plate 1d with the grommet 2 (the end opposite to 1da) is connected to the protruding portion 1b (that is, the peripheral edge of the opening OP of the cylindrical body 1).

Further, six plates 1d arranged radially from the inner surface side of the cylindrical body 1 are extended toward the axial direction of the cylindrical body 1, and the plates 1d are supported by the protruding portions 1b. . The number of plates 1d is not limited to six. For example, it is possible to have fewer than 6, such as 3, 4, 5, etc., and more than 6, such as 7, 8, 9, 10, etc. Further, the plate 1d can be formed integrally with the cylindrical body 1 or can be a separate body. Further, as shown in FIG. 4, when the grommet 2 and the tubular body 1 are fitted and attached, the proximal side of the radially arranged plate 1d with the grommet 2 (see FIG. 1B). end 1da of is adapted to abut against the inner surface 2 e of the thicker portion of the grommet 2.

  As described above, the grommet assembly G of the present invention is provided with the protruding portion 1b that partially closes the opening OP of the cylindrical body 1, and the axial direction of the cylindrical body 1 radially from the inner surface of the cylindrical body 1 A radial plate 1d extending toward the surface is provided, and the radial plate 1d is supported by the protruding portion 1b. For this reason, when the cylindrical body 1 is press-fitted into the through hole H (see FIG. 5) of the vehicle body while pressing the grommet 2 with a finger, there is an advantage that deformation of the cylindrical body can be prevented. Here, with reference to FIG. 5, the procedure for assembling the control cable to the vehicle via the outer plate P of the vehicle or the like will be described. In FIG. 5, the shift lever L side from the outer plate P indicates the vehicle inner side, and the transmission M side from the outer plate P indicates the vehicle outer side. Next, in FIG. 5, reference numeral L is a shift lever device, La is a bracket for fixing the outer casing C of the control cable to the inside of the vehicle, 11 is a cable end on the shift lever device L side, and 13 is a shift lever. A casing cap on the device L side (fixing tool for the outer casing C of the control cable to the bracket La), H is a through hole formed in the outer plate P, M is a transmission, and Ma is an outer casing C of the control cable. A bracket for fixing to the transmission M arranged on the rear side, 12 a cable end on the transmission M side, and 14 a casing cap on the transmission M side (fixing tool for the outer casing C of the control cable to the bracket Ma). Show. (A) First, the cable end 11 on the shift lever device L side of the control cable (C, 11) and the casing cap 13 on the shift lever device L side of the control cable (C, 11) are inserted into the through hole H of the vehicle body from the outside of the vehicle. (B) The penetration structure (G) is press-fitted into the through hole H of the outer plate P from the outside of the vehicle. (C) The cable end 11 on the transmission lever device L side is fixed to the transmission lever device L. (D) The casing cap 13 on the transmission lever device L side is fixed to the bracket La of the transmission lever device L. (E) The casing cap 14 on the transmission M side is fixed to the bracket Ma of the transmission M. (F) The cable end 12 on the transmission M side is fixed to the transmission M. As a result, as shown in FIG. 1 (b), the peripheral edge 2s of the grommet 2 is in close contact with the vehicle body P, and the inner peripheral side end surface of the folded portion 2p is in contact with the outer surface of the tubular body 1. Intrusion of rainwater or the like into P is reliably prevented.

(A) is plane explanatory drawing which shows an example of the cylindrical body which comprises the grommet assembly of this invention, (b) is partial sectional explanatory drawing which shows the plate which comprises the said cylindrical body. It is plane explanatory drawing which shows an example of the grommet which comprises the grommet assembly of this invention. It is sectional explanatory drawing which shows the structure of the bush which comprises the grommet. It is a perspective view which shows an example of the grommet assembly of this invention. It is explanatory drawing which shows the assembly | attachment procedure of the control cable to a vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylindrical body 1a collar part 1b protrusion part 1c main body 1d plate 2 grommet 2a bush 2b through-hole 2c unevenness 2p folding | turning part 2r recess 2s periphery G grommet assembly H through-hole R back surface of a vehicle body

Claims (3)

Grommet made of elastomeric material press-fitted into the opening hole;
A flange is provided at the periphery, and is detachably attached to the back surface of the grommet, and is formed of a rigid cylindrical body with a flange provided at the periphery of one end thereof.
While providing a portion where the thickness in the front and back direction is thicker than the thickness in the front and back direction of the peripheral part of the grommet on the inner peripheral side from the peripheral edge of the grommet ,
A plate extending toward the axial direction of the cylindrical body is provided on the inner surface of the cylindrical body,
A grommet assembly, wherein when the grommet and the tubular body are fitted and attached, one end of the plate abuts against a thick part of the grommet. The grommet assembly according to claim 1, wherein the plates are provided radially. The grommet assembly according to claim 1 or 2, wherein the other end of the plate is joined at the periphery of the opening of the cylindrical body.

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