CN213753881U

CN213753881U - Electric stay bar and sealing structure thereof

Info

Publication number: CN213753881U
Application number: CN202022693924.8U
Authority: CN
Inventors: 柏森; 曹蛟龙
Original assignee: Magna Automotive Parts Suzhou Co ltd
Current assignee: Magna Automotive Parts Suzhou Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-07-20
Anticipated expiration: 2030-11-19

Abstract

The utility model belongs to the technical field of the car, a electricity vaulting pole and seal structure thereof is disclosed, this seal structure set up in the ball socket of electricity vaulting pole and with between ball socket connected's the pencil pipe, the seal structure of electricity vaulting pole includes: the outer wall of the annular insert is embedded and combined with the inner wall of the end part of the wiring harness pipe; the annular elastic piece is arranged on the outer end face, away from the wiring harness tube, of the insert; and the wire harness pipe joint is arranged on the ball socket and comprises a joint body and a flange annularly arranged on the periphery of the joint body, the joint body can be placed into the insert and fixedly connected with the insert, so that a preset distance smaller than the thickness of the elastic piece is formed between the outer end face of the insert and the flange, and the elastic piece is abutted between the insert and the flange. The utility model provides an electric vaulting pole and seal structure thereof can alleviate and even avoid the electric vaulting pole in the risk that pencil pipe and pencil coupling junction intake.

Description

Electric stay bar and sealing structure thereof

Technical Field

The utility model relates to the field of automotive technology, especially, relate to an electricity vaulting pole and seal structure thereof.

Background

The electric support rod is an important accessory of the tail door of the automobile trunk and mainly comprises a tube shell, a screw rod sleeve and a ball socket (socket), a motor and a screw rod are arranged in the tube shell, a telescopic tube is in threaded connection with the screw rod, the ball socket and the telescopic tube are fixedly connected onto the tail door of the automobile, so that when the screw rod is driven to rotate by the motor, the screw rod sleeve can stretch into and stretch out of the tube shell along the axial direction of the screw rod in a reciprocating translation mode, the rotary motion of the screw rod is converted into linear motion, and the tail door of the automobile is driven to be automatically opened and closed.

The wire harness used for supplying power to the electric stay bar and transmitting control signals is led in from the outside of the electric stay bar through a wire harness pipe joint on the ball socket, the part of the wire harness positioned outside the electric stay bar penetrates through a wire harness pipe, one end of the wire harness pipe is connected to the inside of an automobile cabin or a tail door, and the other end of the wire harness pipe is sleeved and connected with the wire harness pipe joint.

Because the tail gate is in the state of closing entirely for a long time, and the electricity vaulting pole is arranged in the rivers groove, often receives from last rivers impact extremely down, makes the electricity vaulting pole often face the risk that the junction intake of pencil pipe and pencil coupling.

Therefore, the above problems need to be solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric vaulting pole and seal structure thereof to alleviate and even avoid the electric vaulting pole in the risk of pencil pipe and pencil coupling junction intaking.

To achieve the purpose, the utility model adopts the following technical proposal:

a sealing structure of an electric stay is arranged between a ball socket of the electric stay and a wire harness pipe connected with the ball socket, and comprises:

the outer wall of the annular insert is embedded and combined with the inner wall of the end part of the wiring harness pipe;

the annular elastic piece is arranged on the outer end face, away from the wiring harness tube, of the insert; and

the wire harness pipe joint is arranged on the ball socket and comprises a joint body and a flange annularly arranged on the periphery of the joint body, the joint body can be placed into the insert and fixedly connected with the insert, a preset distance smaller than the thickness of the elastic piece is formed between the outer end face of the insert and the flange, and the elastic piece is abutted between the insert and the flange.

Preferably, the harness tube is made of an elastic material, and the insert is embedded inside an end face of the harness tube, and a portion of the harness tube outside the outer end face of the insert is formed as the elastic member.

Preferably, the outer end surface of the insert is an inclined surface, and the inclined surface is inclined from outside to inside in the radial direction of the insert toward the other end of the insert.

Preferably, the elastic material is rubber.

Preferably, the elastic member is bonded to the outer end surface of the insert.

Preferably, the inner wall of inserts is provided with joint portion, connect this physical stamina with joint portion adaptation joint.

Preferably, the number of the clamping parts is more than two.

Preferably, the outer wall of the insert is concavely and/or convexly provided with a combining part to increase the area of the combining surface of the insert and the cable harness pipe.

Preferably, the wire harness pipe and the insert are molded in a plastic coating mode.

The utility model discloses still adopt following technical scheme:

an electric stay comprising a sealing structure of the electric stay as described above.

The utility model has the advantages that:

the utility model provides an electricity vaulting pole and seal structure thereof, after installing pencil pipe to the ball socket, the elastic component is and is supported the elastic deformation state of pressing, makes it keep in having the elastic potential energy that answers the deformation to can form annular sealed face in inserts and flange to reverse tightly to both sides, effectively prevent inside outside water, dust etc. get into the electricity vaulting pole from pencil pipe and pencil coupling junction.

Drawings

Fig. 1 is a schematic structural diagram of an electric stay bar in an embodiment of the present invention;

fig. 2 is a schematic view of a sealing structure of an electric stay bar in an embodiment of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is a schematic structural view of a ball socket in an embodiment of the invention;

fig. 5 is a schematic structural view of a wire harness tube and an insert in an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an insert in an embodiment of the present invention.

In the figure:

1. a pipe shell; 2. a telescopic pipe; 3. a ball socket; 4. a wire harness; 5. a harness tube;

100. an insert; 101. a ratchet groove; 102. a bonding section;

200. an elastic member;

300. a harness pipe joint; 301. a connector body; 302. a flange; 303. a ratchet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Referring to fig. 1, the embodiment provides an electric stay bar, which can be applied to an automobile and includes a tube shell 1, a telescopic tube 2 telescopically disposed on the tube shell 1, and two ball sockets 3 respectively disposed at ends of the tube shell 1 and the telescopic tube 2 which are deviated from each other, wherein the two ball sockets 3 are respectively rotatably connected to an automobile body and a tailgate, and a circuit board, a motor, a screw pair and the like are disposed in the tube shell 1 to drive the telescopic tube 2 to perform telescopic motion along the axial direction of the electric stay bar when the electric stay bar receives an external control signal, so as to automatically open or close the tailgate.

The wire harness 4 for supplying power to the electric stay rod and transmitting the control signal is led into the electric stay rod through the wire harness pipe joint 300 connected to the ball socket 3 at the end of the pipe shell 1, the part of the wire harness 4 positioned outside the electric stay rod is penetrated in the wire harness pipe 5, one end of the wire harness pipe 5 is connected to the inside of the automobile cabin or the tail door, the other end of the wire harness pipe 5 is fixedly connected with the wire harness pipe joint 300, in order to reduce or even avoid the risk of water entering the joint of the wire harness pipe 5 and the wire harness pipe joint 300, the electric stay rod provided by the embodiment further comprises the ball socket 3 arranged at the end of the pipe shell 1 of the electric stay rod and a sealing structure between the wire harness pipe 5 connected with the ball socket 3, and the sealing structure is specifically described below.

Referring to fig. 2 to 6, the sealing structure includes an insert 100, an elastic member 200, and a wire harness adapter 300, wherein the insert 100 and the elastic member 200 are annular. Wherein, the insert 100 is arranged in the wire harness tube 5, and the outer wall of the insert is combined with the inner wall of the end part of the wire harness tube 5 in an embedding way; the elastic piece 200 is arranged on the outer end face, away from the wire harness pipe 5, of the insert 100; the wire harness pipe joint 300 is arranged on the ball socket 3 at the end of the pipe shell 1, a through hole capable of leading the wire harness 4 into the ball socket 3 is formed in the wire harness pipe joint 300, the wire harness pipe joint 300 comprises a joint body 301 and a flange 302 annularly arranged on the periphery of the joint body 301, the joint body 301 can be placed into the insert 100 and fixedly connected with the insert 100 when being installed with the wire harness pipe 5, a preset distance smaller than the thickness of the elastic piece 200 is formed between the outer end face of the insert 100 and the flange 302, and the elastic piece 200 is pressed between the insert 100 and the flange 302.

By means of the above structure, after the harness pipe 5 is mounted to the ball socket 3, the elastic member 200 is in an elastically deformed state of being pressed, so that it is kept in an elastic potential energy having a return deformation, and thus it can be reversely pressed against the insert 100 and the flange 302 to both sides to form an annular sealing surface, thereby effectively preventing external water, dust, etc. from entering the inside of the electric stay rod from the connection position of the harness pipe 5 and the harness pipe joint 300.

In an alternative embodiment, the insert 100 may be screwed with the harness pipe joint 300, that is, the inner wall of the insert 100 is provided with an internal thread, and the outer circumference of the joint body 301 of the harness pipe joint 300 is provided with an external thread adapted to the internal thread, and during installation, the harness pipe 5 is tightened until the elastic member 200 and the flange 302 are tightly pressed and deformed.

However, since the harness 4 is disposed in the harness pipe 5, when the harness pipe 5 is rotated, the harness 4 is twisted and wound, and it is difficult to accurately control the screwing degree of the external thread and the internal thread in the assembling process of the electric stay bar, that is, to control the size of the preset distance, so that the magnitude of the pressing force between the elastic member 200 and the flange 302 cannot be accurately set.

Therefore, in the present embodiment, the insert 100 and the wire harness pipe joint 300 are preferably connected in a sleeved manner in a clamping manner, please refer to fig. 3 to 5, the inner wall of the insert 100 is provided with a clamping portion, the joint body 301 can be clamped with the clamping portion in an adaptive manner, so that the wire harness 4 is not twisted even if the wire harness 5 is not required to be rotated in the connection process of the insert 100 and the wire harness pipe joint, and because the clamping portion and another clamping structure of the joint body 301 adapted to the clamping portion have certain positions, the preset distance formed between the outer end face of the insert 100 and the flange 302 after the insert 100 is connected with the joint body 301 has a uniquely determined value, so that the abutting pressure between the elastic member 200 and the flange 302 can be determined according to the setting positions of the structures such as the clamping portion, the flange 302 and the like and the parameters such as the thickness of the elastic member 200, and the sealing effect of the sealing structure can be ensured.

Specifically, in the present embodiment, the fastening portion is an annular ratchet groove 101 concavely disposed on the inner wall of the insert 100, and correspondingly, the outer periphery of the connector body 301 is provided with an annular ratchet 303, when the insert 100 and the connector body 301 are inserted in place, the ratchet groove 101 and the ratchet 303 are correspondingly engaged, and the insert 100 and the connector body 301 can be prevented from falling off accidentally. Preferably, the number of the clamping portions can be more than two, so as to increase the pulling resistance of the insert 100 after being clamped with the connector body 301. Of course, in other alternative embodiments, the ratchet groove 101 and the ratchet 303 can be interchangeably provided on the connector body 301 and the insert 100, respectively, or other clamping structures can be adopted by the implementer, which is not limited in detail herein.

Referring to fig. 3 and 5, in the present embodiment, the harness tube 5 may be made of an elastic material such as rubber, the insert 100 is embedded inside an end surface of the harness tube 5, and a portion of the harness tube 5 located outside an outer end surface of the insert 100 is formed as the elastic member 200, so that when the harness tube 5 is connected to the harness adapter 300 via the insert 100, the portion of the harness tube 5 located outside the outer end surface of the insert 100 may be tightly abutted by the insert 100 and the flange 302 of the harness adapter 300 to form a sealing structure, thereby avoiding an additional installation of the independent elastic member 200 such as a gasket.

Further, the outer end surface of the insert 100 is preferably an inclined surface which is inclined from outside to inside in the radial direction of the insert 100 toward the other end of the insert 100 to form a conical ring surface, so that after the harness pipe 5 is connected to the harness pipe joint 300, a portion of the elastic member 200 (i.e., a portion of the harness pipe 5 outside the outer end surface of the insert 100) located at the outer edge of the outer end surface and between the flanges 302 is compressed to a greater extent than a portion located inside the outer edge of the outer end surface, so that the portion of the elastic member 200 located inside the outer edge of the outer end surface is limited to be maintained at an original position during deformation, the elastic member 200 is prevented from turning outwards, and a sealing effect is ensured.

It can be understood that, in order to form a reliable engaging structure, the insert 100 should be made of a plastic material, for example, in the present embodiment, the insert 100 may be formed by injection molding of a nylon material mixed with glass fibers, and the harness tube 5 is made of a rubber material, if the insert 100 is directly inserted into the harness tube 5, the holding force therebetween is provided only by the restoring elastic force of the harness tube 5 that is expanded and deformed by the insert 100, and the holding force is difficult to be suitable for maintaining the engaging state of the harness tube 5 when the insert is inserted into and pulled out of the harness tube 5, and for this reason, in the present embodiment, the harness tube 5 and the insert 100 may be formed by plastic-coating (also called over-molding).

Specifically, a mold for injection molding of the harness tube 5 may be configured, an insert capable of fixing the insert 100 is disposed in a cavity of the mold, after the insert 100 is obtained by injection molding in advance, a vulcanized rubber suitable for combining nylon and rubber is coated on an outer circumferential surface of the insert 100, then the insert 100 is fixed to the insert, and in a process of closing the mold to form the harness tube 5, a high-temperature environment in the mold may solidify the vulcanized rubber and firmly combine the obtained harness tube 5 made of rubber material with the insert 100.

Preferably, in the process of applying the vulcanized rubber to the insert 100, the vulcanized rubber may also be applied to the outer end surface of the insert 100, so that the portion of the wire harness tube 5 for forming the elastic member 200 may be adhered to the outer end surface of the insert 100. Of course, in other embodiments that use a separate elastic washer as the elastic member 200, the elastic washer may be bonded to the outer end surface of the insert 100 after the insert 100 and the harness pipe 5 are molded, and the embodiment is not limited herein.

As shown in fig. 6, the outer wall of the insert 100 is concavely and/or convexly provided with a combination portion 102 to increase the area of the combination surface of the insert 100 and the harness pipe 5, and the combination portion 102 may further adopt more than two combination structure forms, for example, the combination portion 102 may be set to be a regular or irregular cross-sectional shape such as a spherical convex shape, a square shape, a triangular shape and/or a dovetail shape, so that the outer peripheral surface of the insert 100, that is, the combination surface of the insert 100 and the harness pipe 5 obtains a larger surface area, thereby obtaining a better holding force between the insert 100 and the harness pipe 5.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A sealing structure of an electric stay is arranged between a ball socket (3) of the electric stay and a cable harness pipe (5) connected with the ball socket (3), and is characterized by comprising:

the outer wall of the annular insert (100) is embedded and combined with the inner wall of the end part of the cable harness tube (5);

the annular elastic piece (200) is arranged on the outer end face, away from the wiring harness tube (5), of the insert (100); and

the wire harness pipe joint (300) is arranged on the ball socket (3), the wire harness pipe joint (300) comprises a joint body (301) and a flange (302) which is annularly arranged on the periphery of the joint body (301), the joint body (301) can be placed into the insert (100) and is fixedly connected with the insert (100), so that a preset interval which is smaller than the thickness of the elastic piece (200) is formed between the outer end face of the insert (100) and the flange (302), and the elastic piece (200) is pressed between the insert (100) and the flange (302).

2. The sealing structure of an electric stay according to claim 1, wherein the harness tube (5) is made of an elastic material, and the insert (100) is embedded inside an end face of the harness tube (5), and a portion of the harness tube (5) outside the outer end face of the insert (100) is formed as the elastic member (200).

3. The sealing structure of an electric stay bar according to claim 2, wherein the outer end surface of the insert (100) is an inclined surface which is inclined toward the other end of the insert (100) from outside to inside in a radial direction of the insert (100).

4. The sealing structure of an electric stay according to claim 2, wherein the elastic material is rubber.

5. The sealing structure of an electric stay bar according to any one of claims 1 to 4, wherein the elastic member (200) is adhesively attached to the outer end surface of the insert (100).

6. The sealing structure of the electric stay bar according to claim 1, wherein the inner wall of the insert (100) is provided with a clamping portion, and the joint body (301) can be in adaptive clamping with the clamping portion.

7. The sealing structure of an electric stay bar according to claim 6, wherein the number of the catching portions is two or more.

8. The sealing structure of an electric stay bar according to claim 1, wherein the outer wall of the insert (100) is concavely and/or convexly provided with a bonding portion (102) to increase the area of the bonding surface of the insert (100) with the harness tube (5).

9. The sealing structure of an electric stay bar according to claim 1, wherein the harness tube (5) is over-molded with the insert (100).

10. An electric stay characterized by comprising a sealing structure of the electric stay according to any one of claims 1 to 9.