JP3223069B2 - Grommet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grommet for supporting a harness in a harness through-hole formed in a vehicle body panel of an automobile or the like and sealing the harness through-hole, and more particularly, to a grommet for securely engaging the harness through-hole. Regarding grommets that can be made.

[0002]

2. Description of the Related Art As shown in FIG.
Reference numeral 0 denotes a harness through-hole 16a formed of a grommet body 12 and a resin lock member 14 and formed in a panel 16.
And a harness 18 inserted into the harness through hole 16a in a sealed state. That is, the grommet main body 12 has a harness support cylinder 20 formed at the center thereof for sealing the harness 18, and has a harness through hole 16a at the outer periphery.
Are formed.

[0005] A resin lock member 14 is fitted into an annular groove 26 of the grommet body 12. The resin lock member 14 is integrally attached to the grommet body 12. In addition, the locking claw 14 is formed on the resin locking member 14.
8 are formed in a cut-and-raised shape and are locked in the harness through holes 16a of the panel 16. At this time, the tongue portions 22 and 24 of the grommet main body 12 come into contact with the panel 16 in a sealed state, and the grommet 10 is locked to the panel 16. As described above, the tongue portions 22 and 24 of the grommet main body 12 sufficiently contact the panel 16 to seal the harness through hole 16a of the panel 16. On the other hand, since the harness 18 is supported by the harness support cylinder 20 in a sealed state, the grommet 10 is connected to the harness through-hole 16a and the harness through-hole 1a.
The space between the harness 18 and the harness 18 is sealed.

When the grommet 10 is attached to the harness through hole 16a of the panel 16, a resin lock member 14 is disposed in the harness through hole 16a, and the grommet body 12 is pressed in the direction of arrow A. Thereby, the locking claw 28 of the resin lock member 14 gets over the harness through hole 16a of the panel 16 and is locked in the harness through hole 16a.
The grommet 10 is attached to the panel 16. At this time, the locking claw 2 of the locking member 14 is locked by the locking sound generated when the locking claw 28 of the resin lock member 14 is locked in the harness through hole 16a.
8 can be confirmed.

[0005]

However, in order to confirm the locked state of the locking claw 28 only by the locking sound, the locking sound is canceled out by the surrounding noise and the like, and the locking state of the locking claw 28 is changed. There is a case that it cannot be confirmed.
Could be attached to In this case, as shown in FIG. 16, the tongues 22, 24 formed on the outer periphery of the grommet main body 12 do not sufficiently contact the panel 16, so that the harness through hole 16a of the panel 16 cannot be sealed, The grommet 10 may fall off the panel 16 due to vibration or the like.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem, and it is possible to securely lock a locking claw of a resin lock member into a harness through hole of a panel and visually check the locked state. To provide grommets.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a grommet body having a tongue for supporting a harness and sealing a harness through hole formed in a panel, and is integrally incorporated in the grommet body. And a locking member made of resin having a locking claw that can be locked in the harness through hole. The locking claw of the resin locking member is locked in the harness through hole, and the tongue of the grommet body passes through the harness. In the grommet that supports the harness in the harness through hole with the hole sealed, the lock pin that pushes and locks the locking claw of the resin lock member into the harness through hole moves into the guide provided in the resin lock member. A press that is freely assembled and protrudes convexly above the base of the grommet body with the lock pin temporarily locked, and can be deformed concavely when fully locked That it comprises a can be achieved by a grommet according to claim.

[0008] The object of the present invention is also provided in that the lock pin is incorporated between a temporary locking position where the pressing portion is pushed out of the guide in a convex manner and a full locking position where the locking claw is locked in the harness through hole. That can be achieved.

It is another object of the present invention to provide a temporary locking lock portion in which a lock pin is locked in a temporary locking groove formed in a cylindrical portion of a resin lock member, and a locking claw when the locking pin is pushed in. This can be attained by providing a final locking portion locked by a locking groove formed near the inner side.

Further, the above object of the present invention is attained by providing a temporary locking groove formed in a guide of a cylindrical portion of a resin lock member and a lock portion to be locked in the permanent locking groove, wherein the lock pin is provided. it can.

[0011]

According to the grommet of the present invention, the lock pin for pushing and locking the locking claw of the resin lock member into the harness through hole is movably incorporated into the guide provided on the resin lock member. In addition, a pressing portion is provided on the base of the grommet main body so as to protrude convexly in a temporarily locked state of the lock pin and to be concavely deformable in a fully locked state. As a result, after the locking claw of the resin lock member is locked in the harness through hole, by applying a pressing force to the pressing portion of the grommet main body, the lock pin is moved from the temporary locking state to the final locking state. Becomes By the movement of the lock pin, the locking claw of the resin lock member is securely locked in the harness through-hole, and the tongue of the grommet body contacts the panel to seal the harness through-hole, and the pressing portion has a convex shape. By deforming into a concave shape, the locked state of the resin lock member can be visually checked.

Further, the lock pin is incorporated between a temporary locking position where the pressing portion is pushed in the guide in a convex shape and a full locking position where the locking claw is locked in the harness through hole. Furthermore,
The lock pin is locked in a temporary locking groove formed in the cylindrical portion of the resin locking member, and is locked in a locking groove formed near the inside of the locking claw when pushed in. Or a common locking portion locked in the temporary locking groove and the full locking groove. As a result, the lock pin is held at the temporary locking position and the final locking position in the guide, and by applying a pressing force, the lock pin is reliably moved from the temporary locking position to the full locking position and locked. be able to.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the grommet of the present invention will be described in detail with reference to FIGS. 1 is a side view showing the entire appearance of the grommet of the present invention, FIG. 2 is a cross-sectional view in FIG. 1, FIG. 3 is a partial cross-sectional view of a main part in FIG.
7 is a sectional view taken along line AA in FIG. 3, FIG. 5 is a partial sectional view of a main part of the grommet body, FIG.
FIG. 8 is an operation explanatory view showing the temporarily locked state of the lock pin, and FIG. 8 is an operation explanatory view showing the fully locked state of the lock pin.

As shown in FIGS. 1 and 2, the grommet 3
Reference numeral 0 denotes a grommet main body 32, a resin lock member 34, and a lock pin 35 (see FIG. 2). The grommet main body 32 is integrally formed of a rubber elastic member. The grommet main body 32 has a base 36 formed in a disk shape, and an elastic bellows 38 is formed coaxially on the upper part of the base 36. A harness support tube 40 is formed coaxially above the bellows portion 38, and a harness 42 is fitted into the harness support tube 40. Also,
An annular outer tongue 44a and an inner tongue 44b (see FIG. 2) are formed coaxially on the outer periphery of the lower portion of the base 36.

As shown in FIG. 2, an annular groove 46 is formed in the base 36.
Is formed in the annular groove 46.
Is fitted. Thereby, the resin lock member 34 is integrally assembled to the grommet main body 32. The resin lock member 34 is integrally formed of a flexible resin material, and the flange portion 48 has a cylindrical portion 50 extending downward. A locking claw 52 is formed at a lower end of the cylindrical portion 50 at a predetermined interval, and the locking claw 52 is raised from the lower end of the cylindrical portion 50 so as to be bent outward. Tube part 50 at lower end
It is configured to be cantilevered.

As shown in FIG. 3, outside the locking claw 52,
A projection 52a is formed, a step 52b is formed above the projection 52a, and a lock groove 52c is formed inside the locking claw 52. A guide 50 is provided between the locking claw 52 and the cylindrical portion 50, that is, on the outer peripheral side of the cylindrical portion 50.
a is formed, and the lock pin 35 is inserted into the guide 50a.

As shown in FIG. 4, the lock pin 35 has a substantially T-shaped cross section, and is supported movably in the vertical direction along a guide 50a. The lock pin 35 is formed with a temporary lock portion 35a and a full lock portion 35b that protrude inward and outward, respectively. The temporary locking lock portion 35a is movably fitted in a temporary locking groove 50b formed in the cylindrical portion 50.
In addition, the final locking lock 35b is in contact with the upper end of the locking claw 52 in the temporary locking state as shown in FIG. At this time, the upper end 35c of the lock pin 35 is formed in a columnar shape, and is in contact with the pressing portion 37 formed on the base 36 of the grommet main body 32 to push the pressing portion 37 upward. The pressing portion 37 is formed in a circular shape as shown in FIG. 6, and is formed so as to be concave as shown in FIG. 5 when not in contact with the lock pin 35.

The operation of the grommet of the present invention configured as described above will be described with reference to FIGS. First,
As shown in FIG. 7, the locking claw 52 of the resin lock member 34
Is attached to the burring-processed harness through hole 58 of the panel 56. Next, when the grommet main body 32 is pushed into the harness through hole 58, the locking claw 52 of the resin lock member 34 is fitted into the harness through hole 58. At this time,
If the grommet main body 32 is not sufficiently pushed in the direction of arrow A, the protrusion 52a of the locking claw 52 is held in a position where it has passed over the burring portion 58a of the harness through hole 58 and is in an unlocked state in contact with the burring portion 56a. Will be.

Next, as shown in FIG. 8, the pressing portion 37 is pressed in the direction of arrow A to push down the lock pin 35 downward. As a result, the final lock portion 35 of the lock pin 35
b goes over the step 52b of the locking claw 52 and
c, and the lock pin 35 is locked at the lock position. At this time, the final locking lock portion 35b acts to push the step portion 52b in the direction of arrow B, and the locking claw 52 moves
Tilt in the direction. Therefore, the projection 52a of the locking claw 52
However, the outer tongue 44a and the inner tongue 44b of the grommet main body 32 are sufficiently contacted with the panel 56 by being locked to the burring portion 56a of the harness through hole 58, and the harness through hole 58 is sealed.

As described above, the pressing portion 37 of the grommet main body 32 is pressed in the direction of arrow A to position the lock pin 35 at the locking position, so that the pressing portion 37 is pushed in a concave shape. Therefore, by visually checking or touching that the pressing portion 37 has a concave shape, it can be surely confirmed that the locking claw 52 has been locked to the burring portion 58a.

In the above embodiment, the projection 52a of the locking claw 52
Has been described in a position over the burring portion 58a of the harness through-hole 58 and held in an unlocked state in contact with the burring portion 58a, but when the grommet 30 is attached to the harness through-hole 58 of the panel 56,
It is also conceivable that the projection 52a of the locking claw 52 is held at a position where it does not cross the burring portion 58a of the harness through hole 58.

In this case, as shown in FIG. 7, even when the pressing portion 37 is pressed in the direction of arrow A to push down the lock pin 35, the locking claw with which the full locking lock portion 35b of the lock pin 35 is in contact. Since 52 is held by the burring portion 58a, it is not tilted in the direction of arrow B as shown in FIG. Therefore, since the lock pin 35 does not descend, the pressing portion 37
Cannot be pushed down in a concave shape, and it can be confirmed that the locking claw 52 is in the unlocked state.

Next, a second embodiment of the grommet of the present invention will be described in detail with reference to FIGS. 9 is an operation explanatory view showing a provisionally locked state of the lock pin of the grommet of the present embodiment, FIG. 10 is a cross-sectional view taken along the line CC in FIG. 9, FIG. 11 is an operation explanatory view showing the fully locked state of the lock pin, FIG. 12 is a sectional view taken along line DD in FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. As shown in FIGS. 9 and 10, the grommet 60
The grommet body 62 includes a resin lock member 64 and a lock pin 65. The grommet body 62 has a base 66 formed in a disk shape. The resin lock member 64 is integrally formed of a flexible resin material, and has a cylindrical portion 70 extending at the center thereof, and a locking claw 72 provided at a lower end of the cylindrical portion 70 at a predetermined interval. It is formed.

A guide 70a is formed between the locking claw 72 and the cylindrical portion 70, that is, on the outer peripheral side of the cylindrical portion 70, and the lock pin 65 is inserted into the guide 70a. The lock pin 65 has a lock portion 65a formed therein. The lock portion 65a is movably fitted into the temporary locking groove 74 and the final locking groove 76 formed in the cylindrical portion 70. I have. The tip of the lock pin 65 is
In the provisionally locked state in which the lock portion 65a is locked in the temporary locking groove 74, the lock portion 65a is in contact with the upper end portion of the locking claw 72, and the rear portion is in the pressing portion 67 formed in the base 66 of the grommet main body 62. It is fitted and pushes the pressing portion 67 upward.
The pressing portion 67 is a bag-shaped thin portion formed in a substantially rectangular shape, and is formed such that the upper end portion expands and contracts in a concave shape when not in contact with the lock pin 65.

The operation of the grommet of the present embodiment configured as described above will be described. First, as shown in FIGS. 9 and 10, with the lock pin 65 inserted into the guide 70 a and the lock portion 65 a locked in the temporary locking groove 74, the locking claw 72 of the resin lock member 64 is The panel 56 is mounted in the harness through hole 58. Next, when the grommet main body 62 is pushed into the harness through hole 58, the resin lock member 6 is pressed.
The 4 locking claws 72 are fitted into the harness through holes 58. At this time, if the grommet main body 62 is not sufficiently pushed, the locking claw 72 does not climb over the harness through-hole 58 and is held in an unlocked state.

Next, as shown in FIGS. 11 and 12, the pressing portion 67 is pressed in the direction of arrow A to push down the lock pin 65 downward. As a result, the lock portion 65a of the lock pin 65 goes over the locking claw 72 and fits into the main locking groove 76, and the lock pin 65 is locked at the lock position. Accordingly, the locking claws 72 are locked in the harness through holes 58, and the grommet main body 62 sufficiently contacts the panel 56 to seal the harness through holes 58. As described above, since the pressing portion 67 of the grommet main body 62 is pressed in the direction of arrow A to position the lock pin 65 at the locking position, the upper end of the pressing portion 67 is deformed into a concave shape. Therefore, by visually checking or touching that the pressing portion 67 has a concave shape, it can be surely confirmed that the locking claw 72 has been locked to the panel 56.

When the grommet 60 is attached to the harness through hole 58 of the panel 56, the locking claw 72 may be held at a position where it does not cross the harness through hole 58. In this case, as shown in FIG. 9, even if the pressing portion 67 is pressed to push down the lock pin 65, the lock pin 65 cannot descend because the tip end of the lock pin 65 is in contact with the locking claw 72. It can be confirmed that the locking claw 72 is in the unlocked state.

Next, a third embodiment of the grommet of the present invention will be described in detail with reference to FIGS. This embodiment differs from the previous embodiment in that, for example, a pressing portion 6 formed on a base 66 of a grommet main body 62 shown in FIG.
7 is not provided, and an insertion hole 87 for a lock pin is provided. Therefore, the lock pin 85 can be inserted from outside the grommet main body 82 as shown in FIG. That is, the locking portion 65a is
The lock pin 85 in the temporarily locked state locked in the temporary locking groove 74 a protrudes from the grommet main body 82.

Then, the lock pin 85 in the fully locked state in which the lock portion 65a is fitted in the fully locked groove 76 of the guide 70a.
Is locked to the grommet body 82 so as to be substantially flush. At this time, the contact portion between the insertion hole 87 and the lock pin 85 is secured in a watertight state. Therefore, the lock pin 85 is easily inserted into the grommet main body 82, and the lock pin 85 is directly pushed in. Thus, the pushing operation can be performed more reliably. It can be further improved.

[0030]

As described above, according to the grommet of the present invention, the lock pin for pushing and locking the locking claw of the resin lock member into the harness through hole is provided in the guide provided on the resin lock member. In addition to being movably incorporated, a pressing portion is provided on the base of the grommet main body, which protrudes in a convex shape when the lock pin is temporarily locked, and is deformable in a concave shape in the fully locked state. As a result, the locking claw of the resin lock member is securely locked in the harness through hole, the tongue of the grommet body sufficiently contacts the panel to seal the harness through hole, and the resin lock is deformed by the pressing portion. The locked state of the member can be visually observed. Therefore, the locking claw of the resin lock member can be reliably locked in the harness through hole.

Further, the lock pin is incorporated between a temporary locking position for pushing the pressing portion in the guide in a convex shape and a full locking position for locking the locking claw in the harness through hole. Are locked in a temporary locking groove formed in the cylindrical portion of the cylindrical portion of the resin lock member, and are locked in a locking groove formed near the inside of the locking claw when pushed in. It is provided with a final locking lock. As a result, the lock pin is reliably positioned at the temporary locking position and the final locking position, and by pressing the pressing portion, the lock pin can be reliably moved from the temporary locking position to the full locking position. Therefore, it is possible to prevent the grommet from being mounted in the non-locked state, securely fix the grommet to the panel, and visually check the locked state of the grommet.

Further, when the lock portion of the lock pin is locked in the temporary locking groove and the permanent locking groove formed in the guide of the cylindrical portion, the structure of the lock pin can be simplified, so that the lock pin is mounted on the grommet body. The workability is good, and the workability can be improved.

[Brief description of the drawings]

FIG. 1 is a side view showing the entire appearance of a first embodiment of a grommet of the present invention.

FIG. 2 is a cross-sectional view of the grommet in FIG.

FIG. 3 is a partially enlarged view of a main part in FIG. 2;

FIG. 4 is a sectional view taken along line AA in FIG. 3;

FIG. 5 is a partially enlarged view showing a main part of a grommet main body.

6 is a view as viewed in the direction of arrow B in FIG. 5;

FIG. 7 is an operation explanatory view showing a temporarily locked state of the grommet.

FIG. 8 is an operation explanatory view showing a final locking state of the grommet.

FIG. 9 is a cross-sectional view showing a grommet according to a second embodiment of the present invention in a temporarily locked state.

FIG. 10 is a sectional view taken along line CC in FIG. 9;

FIG. 11 is a cross-sectional view showing a fully locked state in FIG.

FIG. 12 is a sectional view taken along line DD in FIG. 11;

FIG. 13 is a cross-sectional view showing a grommet according to a third embodiment of the present invention in a temporarily locked state.

FIG. 14 is a cross-sectional view showing the final locking state in FIG.

FIG. 15 is a cross-sectional view showing a locked state of a conventional grommet.

FIG. 16 is a cross-sectional view showing an unlocked state of a conventional grommet.

[Explanation of symbols]

 30 Grommet (first embodiment) 32, 62, 82 Grommet main body 34, 64 Resin lock member 35, 65, 85 Lock pin 35a Temporary lock part 35b Full lock part 37, 67 Press part 42 Wire harness 44a , 44b Tongue 50, 70 Tubular 50a, 70a Guide 50b, 74 Temporary locking groove 52, 72 Locking claw 52c Lock groove 56 Panel 58 Harness through hole 60 Grommet (Second embodiment) 65a Lock part 76 Main locking Groove 80 Grommet (Third embodiment)

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01B 17/58 H02G 3/22 B60R 16/02

Claims (4)

(57) [Claims] 1. A grommet main body having a tongue for supporting a harness and sealing a harness through hole formed in a panel, and a member integrated with the grommet main body and capable of engaging with the harness through hole. A locking claw provided with a locking claw, wherein the locking claw of the locking member is locked in the harness through-hole and the tongue of the grommet body seals the harness through-hole. In a grommet that supports a harness in the harness through hole, a lock pin that pushes and locks a locking claw of the resin lock member into the harness through hole is movable in a guide provided in the resin lock member. In addition to being incorporated, it protrudes in a convex shape on the base of the grommet main body in the provisionally locked state of the lock pin, and deforms in a concave shape in the fully locked state Grommet, characterized in that it comprises a capability pressing unit. 2. The lock pin is assembled between a temporary locking position for pushing the pressing portion in the guide in a convex shape and a full locking position for locking the locking claw in the harness through hole. The grommet according to claim 1, wherein the grommet is provided. 3. A temporary locking lock portion in which the lock pin is locked in a temporary locking groove formed in a cylindrical portion of the resin lock member, and a portion near the inside of the locking claw when pushed in. The grommet according to claim 1, further comprising a permanent locking portion that is locked by a locking groove formed in the grommet. 4. The lock pin according to claim 1, wherein the lock pin includes a temporary locking groove formed in a guide of a cylindrical portion of the resin locking member and a locking portion locked in a permanent locking groove. Item 3. Grommets according to items 1 and 2.