A front compartment wire harness front apron rubber piece sheath

Abstract

The present application relates to the technical fields of wire harness sheath, in particular to a kind of automobile front compartment wire harness front wall rubber part sheath, including rubber main body I and rubber main body II, rubber main body I and rubber main body II cooperate to form cavity structure;Rubber main body I and rubber main body II are connected with the wire harness hole of front wall by annular buckle.The beneficial effects generated by the present application are: the sheath adopts the split structure of rubber main body I and rubber main body II, and is fixed by annular sealing rib, effectively solves the stable difficulty of sheath cavity forming process, makes the sheath have sound-insulation cavity structure while being convenient to manufacture;Limiting protrusion on rubber main body I effectively limits the rotation of rubber main body II and annular buckle, while arc-shaped groove can limit the axial position of rubber main body I, rubber main body II and annular buckle, to further ensure the relative position between rubber main body I, rubber main body II and annular buckle, guarantee the structural stability of sheath.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wire harness sheath, in particular to a rubber part sheath for a front apron of a wire harness in a front compartment of an automobile. BACKGROUND

[0002] The wire harness rubber part refers to an elastic rubber part used at a through hole of a body sheet metal during wire harness passing through the sheet metal, so as to ensure good waterproof performance, wire harness protection, and smooth transition of the wire harness. Because the sound in the engine and the engine compartment is relatively loud during automobile driving, the sound is transmitted into the driver's compartment through the sheet metal hole. The front apron rubber part needs to meet the NVH sound insulation requirements of the whole vehicle. The front apron rubber part generally has relatively high sound insulation requirements. In the traditional design, a whole cavity structure is generally designed, but such a structure has relatively large limitations on product design and production mode. In the past design, the rubber part of the front apron is a technical difficulty, and it is difficult to meet the bidirectional index requirements of the cavity and the molding process. SUMMARY

[0003] The present application provides a rubber part sheath for a front apron of a wire harness in a front compartment of an automobile, which solves the problem that the cavity and the molding process cannot be avoided in the prior art.

[0004] The technical scheme of the present application is as follows:

[0005] A rubber part sheath for a front apron of a wire harness in a front compartment of an automobile, comprising a rubber main body I and a rubber main body II, the rubber main body I and the rubber main body II cooperate to form a cavity structure; the rubber main body I and the rubber main body II are connected with a wire harness hole of the front apron through an annular buckle. The sheath adopts a split structure of the rubber main body I and the rubber main body II, which facilitates the setting of the sound insulation cavity and improves the molding process of the sheath, facilitates the manufacturing of the sheath, and the rubber main body I and the rubber main body II can be installed into the wire harness hole of the front apron through the annular buckle.

[0006] The rubber main body I and the rubber main body II are both funnel-shaped structures, and the rubber main body I and the rubber main body II are oppositely arranged and are inserted and cooperated with each other. The two funnel-shaped structures are buckled to form a shuttle-shaped cavity structure, which meets the sound insulation requirements of the front apron.

[0007] The rubber main body I is provided with a positioning structure matched with the rubber main body II and the annular buckle, and the annular buckle and the rubber main body I are provided with a locking structure matched with the front apron. The positioning structure fixes the relative positions of the rubber main body I, the rubber main body II and the annular buckle, ensures the structural stability of the sheath, the locking structure fixes the sheath on the front apron, and ensures the installation stability of the sheath.

[0008] The positioning structure comprises limiting protrusions and arc-shaped grooves which are alternately arranged on the inner side of the rubber main body I; the large end opening of the rubber main body II is provided with an end face positioning ring I, and the end face positioning ring I is provided with a positioning groove I; the annular buckle is provided with an end face positioning ring II, and the end face positioning ring II is provided with a positioning groove II; the end face positioning ring I and the end face positioning ring II are clamped into the arc-shaped grooves, and the positioning groove I and the positioning groove II are matched with the limiting protrusions. The arc-shaped grooves limit the axial movement of the rubber main body II and the annular buckle, and the limiting protrusions prevent the relative rotation between the rubber main body II and the rubber main body I through the cooperation with the positioning groove I and the positioning groove II.

[0009] The lower surface of the end face positioning ring I is attached to the lower side wall of the arc-shaped groove, the upper surface of the end face positioning ring II is attached to the upper side wall of the arc-shaped groove, and the diameter of the arc-shaped groove is greater than or equal to the diameter of the end face positioning ring I and the end face positioning ring II. The arc-shaped groove limits the axial movement of the end face positioning ring I and the end face positioning ring II.

[0010] The upper surface of the end face positioning ring I is provided with an end face protrusion, the lower surface of the end face positioning ring II is provided with an end face groove, and the end face protrusion is matched with the end face groove. The annular buckle and the rubber main body II are prevented from relative rotation.

[0011] The outer side of the rubber main body II is provided with an annular groove, the inner side of the annular buckle is provided with an annular protrusion, and the annular groove is matched with the annular protrusion. The axial movement of the rubber main body II and the annular buckle is prevented.

[0012] The locking structure comprises a sealing rib and a spring tongue, the sealing rib is arranged on the rubber main body I, and the sealing rib is matched with one side surface of the front wall; the spring tongue is arranged on the annular buckle, and the spring tongue is matched with the other side surface of the front wall. The sealing rib and the spring tongue are matched to lock the front wall, so that the sheath is installed into the wire harness hole of the front wall.

[0013] The sealing rib comprises an inner sealing rib and an outer sealing rib which are concentrically arranged, and the inner sealing rib and the outer sealing rib are arranged at the large end opening of the rubber main body I. The double-layer sealing rib makes the sheath have better sealing property.

[0014] The number of the spring tongues is at least one. Multiple spring tongues work together to ensure the stable installation of the sheath.

[0015] The beneficial effects of the present application are: the sheath adopts the split structure of the rubber main body I and the rubber main body II, and is fixed through the annular sealing rib, effectively solves the stable difficulty of the sheath cavity forming process, and makes the sheath convenient to manufacture while having the sound insulation cavity structure; the limiting protrusion on the rubber main body I effectively limits the rotation of the rubber main body II and the annular buckle, and the arc-shaped groove can limit the axial position of the rubber main body I, the rubber main body II and the annular buckle, thereby ensuring the relative position between the rubber main body I, the rubber main body II and the annular buckle, and ensuring the structural stability of the sheath; the sealing rib on the rubber main body I and the elastic tongue on the annular buckle cooperate to fix the sheath on the wire harness hole of the front wall panel, and ensure the stable installation of the sheath. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is an explosion schematic diagram of the sheath of the rubber part of the automobile front compartment wire harness front wall panel.

[0018] Figure 2 It is a sectional view of the rubber main body.

[0019] Figure 3 It is a sectional view of the sheath assembly.

[0020] Figure 4 It is Figure 3 It is an enlarged schematic view of position A in the middle.

[0021] In the figure: 1-rubber main body I, 11-arc-shaped groove, 12-limiting protrusion, 13-inside sealing rib, 14-outside sealing rib, 2-rubber main body II, 21-annular groove, 22-end face protrusion, 23-positioning groove I, 3-annular buckle, 31-elastic tongue, 32-annular protrusion, 33-positioning groove II, 4-cavity structure, 5-front wall panel. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Embodiment 1, as Figure 1As shown in the figure, a rubber sheath for a front compartment wire harness front apron of a car comprises a rubber main body I 1 and a rubber main body II 2, and the rubber main body I 1 and the rubber main body II 2 cooperate to form a cavity structure 4; the rubber main body I 1 and the rubber main body II 2 are connected with the wire harness hole of the front apron 5 through a ring buckle 3. The sheath adopts a split structure of the rubber main body I 1 and the rubber main body II 2, which makes the sheath have a sound insulation cavity structure and is convenient for forming and manufacturing, and takes into account the two-way index requirements of the cavity and the forming process; at the same time, the rubber main body I 1 and the rubber main body II 2 are assembled and connected through the ring buckle 3, and are installed on the wire harness hole of the front apron 5, to ensure stable installation.

[0024] Further, as shown in the figure, Figure 2 , Figure 3 The rubber main body I 1 and the rubber main body II 2 are both funnel-shaped structures, and are arranged oppositely, and the rubber main body I 1 and the rubber main body II 2 are inserted and cooperated. The two large ends of the funnel-shaped structures are connected to form a shuttle-shaped cavity structure 4. When the sheath is used, the wire harness passes through the sheath from the small end of the funnel-shaped structure, the small end of the funnel-shaped structure fixes the wire harness, and at the same time can play a sealing role; the shuttle-shaped cavity structure 4 has a sound insulation effect.

[0025] Further, the rubber main body I 1 is provided with a positioning structure cooperating with the rubber main body II 2 and the ring buckle 3, and the ring buckle 3 and the rubber main body I 1 are provided with a locking structure cooperating with the front apron 5. The positioning structure determines the relative position between the rubber main body I 1, the rubber main body II 2 and the ring buckle 3, to ensure accurate assembly of the sheath; and the sheath is assembled to the front apron 5 through the locking structure, to ensure stable installation of the sheath on the front apron 5.

[0026] In example 2, the difference from example 1 is that the positioning structure comprises limiting protrusions 12 and arc-shaped grooves 11, the limiting protrusions 12 and the arc-shaped grooves 11 are alternately arranged on the inner side of the rubber main body I 1; the rubber main body II 2 is provided with an end face positioning ring I at the large end opening, the end face positioning ring I is provided with a positioning groove I 23, the ring buckle 3 is provided with an end face positioning ring II, the end face positioning ring II is provided with a positioning groove II 33, the end face positioning ring I and the end face positioning ring II are clamped into the arc-shaped grooves 11, and the positioning groove I 23 and the positioning groove II 33 cooperate with the limiting protrusions 12. In this embodiment, the number of limiting protrusions 12 and arc-shaped grooves 11 is 4, and the number of positioning groove I 23 and positioning groove II 33 is 4. The limiting protrusions 12 are clamped into the positioning groove I 23 and the positioning groove II 33, so that the rubber main body I 1 does not rotate relative to the rubber main body II 2 and the ring buckle 3, to ensure stable use of the sheath.

[0027] Further, the lower surface of the end face positioning ring I is attached to the lower side wall of the arc-shaped groove 11, the upper surface of the end face positioning ring II is attached to the upper side wall of the arc-shaped groove 11, and the diameter of the arc-shaped groove 11 is greater than or equal to the diameter of the end face positioning ring I and the end face positioning ring II. The arc-shaped groove 11 limits the axial direction of the end face positioning ring I and the end face positioning ring II, thereby ensuring the axial position fixation between the rubber main body I 1 and the rubber main body II 2 and the annular buckle 3.

[0028] Further, the upper surface of the end face positioning ring I is provided with an end face protrusion 22, the lower surface of the end face positioning ring II is provided with an end face groove, and the end face protrusion 22 cooperates with the end face groove. The cooperation between the end face protrusion 22 and the end face groove prevents the relative rotation between the rubber main body II 2 and the annular buckle 3. The outer side of the rubber main body II 2 is provided with an annular groove 21, the inner side of the annular buckle 3 is provided with an annular protrusion 32, and the annular groove 21 cooperates with the annular protrusion 32. The annular protrusion 32 is clamped into the annular groove 21, thereby fixing the axial relative position between the rubber main body II 2 and the annular buckle 3.

[0029] Embodiment 3, which is different from Embodiment 1 or Embodiment 2, as shown in Figure 4 The locking structure includes a sealing rib and a spring tongue 31. The sealing rib is arranged on the rubber main body I 1, and cooperates with one side surface of the front wall 5. The spring tongue 31 is arranged on the annular buckle 3, and cooperates with the other side surface of the front wall 5. The cooperation between the spring tongue 31 and the sealing rib fixes the sheath on the wire harness hole of the front wall 5, thereby ensuring the stable installation of the sheath.

[0030] Further, the sealing rib includes an inner sealing rib 13 and an outer sealing rib 14 arranged concentrically. Both the inner sealing rib 13 and the outer sealing rib 14 are arranged at the large end opening of the rubber main body I 1. During the installation of the sheath, the inner sealing rib 13 and the outer sealing rib 14 are deformed by pressing the rubber main body I 1, thereby making the inner sealing rib 13 and the outer sealing rib 14 tightly attached to one side of the front wall 5. The double sealing ribs effectively ensure the sealing performance of the sheath on the wire harness hole of the front wall 5.

[0031] Further, the number of the spring tongues 31 is at least one. In this embodiment, the number of the spring tongues 31 is four, and the spring tongues 31 are uniformly arranged on the outer circle of the annular buckle 3. During the installation of the sheath, the wire harness hole of the front wall 5 extrudes and deforms the spring tongues 31. When the spring tongues 31 completely pass through the front wall 5, the spring tongues 31 rebound, and the spring tongues 31 tightly clamp the edge of the wire harness hole of the front wall 5, thereby ensuring the stable installation of the sheath.

[0032] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automobile front compartment wire harness front cowl panel rubber member sheath, characterized by, The application relates to a rubber main body I (1) and a rubber main body II (2), the rubber main body I (1) and the rubber main body II (2) cooperate to form a cavity structure (4), the rubber main body I (1) and the rubber main body II (2) are connected with a wire harness hole of a front wall (5) through an annular buckle (3), the rubber main body I (1) and the rubber main body II (2) are oppositely arranged and are in plug-in cooperation, the rubber main body I (1) is provided with a positioning structure matched with the rubber main body II (2) and the annular buckle (3), the annular buckle (3) and the rubber main body I (1) are provided with locking structures matched with the front wall (5), the positioning structure comprises limiting protrusions (12) and arc-shaped grooves (11), the limiting protrusions (12) and the arc-shaped grooves (11) are alternately arranged on the inner side of the rubber main body I (1), the rubber main body II (2) is provided with an end face positioning ring I at a large-end opening, the end face positioning ring I is provided with a positioning groove I (23), the annular buckle (3) is provided with an end face positioning ring II, the end face positioning ring II is provided with a positioning groove II (33), the end face positioning ring I and the end face positioning ring II are clamped into the arc-shaped grooves (11), and the positioning groove I (23) and the positioning groove II (33) are matched with the limiting protrusions (12), the locking structure comprises sealing ribs and elastic tongues (31), the sealing ribs are arranged on the rubber main body I (1) and matched with one side surface of the front wall (5), the elastic tongues (31) are arranged on the annular buckle (3) and matched with the other side surface of the front wall (5).

2. The automobile front bay wiring harness front apron rubber member sheath according to claim 1, characterized by, The lower surface of the end face positioning ring I is attached to the lower side wall of the arc-shaped groove (11), the upper surface of the end face positioning ring II is attached to the upper side wall of the arc-shaped groove (11), and the diameter size of the arc-shaped groove (11) is greater than or equal to the diameter size of the end face positioning ring I and the end face positioning ring II.

3. The rubber boot of an automobile engine bay wire harness front apron according to claim 1 or 2, characterized in that, The end face positioning ring I is provided with an end face protrusion (22) on the upper surface, the end face positioning ring II is provided with an end face recess on the lower surface, and the end face protrusion (22) is matched with the end face recess.

4. The rubber boot of an automobile engine compartment wire harness front cowl panel of claim 3, wherein, The rubber main body II (2) is provided with an annular groove (21) on the outer side, and the inner side of the annular buckle (3) is provided with an annular protrusion (32), the annular groove (21) is matched with the annular protrusion (32).

5. The rubber boot of an automobile engine compartment wire harness front cowl panel of claim 1, wherein, The sealing ribs comprise inner sealing ribs (13) and outer sealing ribs (14) arranged concentrically, and the inner sealing ribs (13) and the outer sealing ribs (14) are arranged at the large-end opening of the rubber main body I (1).

6. The automobile engine bay wire harness front apron rubber member sheath according to claim 5, characterized by, The number of the elastic tongues (31) is at least one.

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