CN205417447U

CN205417447U - Car and fixing device thereof

Info

Publication number: CN205417447U
Application number: CN201620250869.6U
Authority: CN
Inventors: 刘杰; 杨向兵; 高正娟
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2016-03-29
Filing date: 2016-03-29
Publication date: 2016-08-03
Anticipated expiration: 2026-03-29

Abstract

The utility model provides a car and fixing device thereof, the car includes preceding panel beating, isolated pad and the pipeline of enclosing, the fixed surface who encloses the panel beating before the is provided with the double -screw bolt, and fixing device includes: the portion of surrouning for the cover is established outside the double -screw bolt, and only relatively the double -screw bolt single direction that encloses the panel beating along draw close before remove, the axial one end of the portion of surrouning is used for filling up to by enclosing the panel beating in the front on the surface isolated, being equipped with accommodation space's fixed part, being connected with the axial other end of the portion of surrouning, accommodation space is used for holding the nanotube way to with the pipeline in the make progress anticreep cooperation of the footpath of pipeline, the portion of encircling overlaps when establishing on the double -screw bolt, the fixed part can use the double -screw bolt as the rotation center rotation of axes. The utility model discloses an in the scheme, utilize same fixing device to come to realize simultaneously isolated the trend fixed and pipeline of filling up and arrange, not only reduced fixing device's quantity, enclose double -screw bolt quantity and the isolated quantity that stacks up the through -hole on the panel beating before still having reduced to the cost is reduced has alleviateed the car gross weight, has promoted the soundproof and heat resistant effect.

Description

Automobile and fixing device thereof

Technical Field

The utility model relates to the technical field of automobiles, especially, relate to an automobile and fixing device thereof.

Background

The insulating pad has been arranged to the preceding panel beating outside of enclosing of present most cars, and insulating pad plays the thermal-insulated effect of giving sound insulation, can let in the noise that the engine produced spreads into the car still less to NVH (noise vibration harshness) performance of car has been promoted. Isolated pad is fixed before on enclosing the panel beating, and implementation mode is: enclose the panel beating before and set up a plurality of double-screw bolts towards the one side of isolated pad is fixed, set up a plurality of through-holes on isolated pad, the double-screw bolt passes the through-hole one by one, with each double-screw bolt fixed with first fixing device one by one, this first fixing device will isolate to fill up and lean on before and to enclose the panel beating.

The pipeline is arranged in the outer side of the front wall metal plate according to the set trend, and the implementation mode is as follows: the front wall metal plate is fixedly provided with a plurality of studs facing one side of the pipeline according to the trend of the pipeline, each stud is fixed with a second fixing device one by one, and the pipeline is stabilized by the second fixing device.

However, the prior art has the following disadvantages:

1. need utilize two kinds of different fixing device to realize the fixed of isolated pad and the trend of pipeline respectively and arrange, not only cause the fixing device that uses on the car more in quantity, but also cause preceding stud on enclosing the panel beating more in quantity to cause cost and car gross weight to increase.

2. The insulating pad is required to be provided with a through hole to avoid the stud fixed with the second fixing device on the front wall metal plate, so that the number of the through holes on the insulating pad is large, and the sound and heat insulation effect of the insulating pad is weakened.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be: be used for realizing on the current car that isolated pad is fixed and the fixing device quantity that the pipeline trend was arranged is more, and it is more to enclose double-screw bolt quantity on the panel beating before, causes cost and car gross weight to increase. In addition, the number of the through holes on the isolation pad is large, and the sound insulation and heat insulation effects are weakened.

In order to solve the problem, the utility model provides a fixing device for on car, the car is including preceding enclosing the panel beating, being located before enclose the isolated pad and the pipeline in the panel beating outside, before enclose the panel beating towards the fixed surface of isolated pad, pipeline is provided with the double-screw bolt, isolated pad is equipped with the confession the through-hole that the double-screw bolt passed, fixing device includes: the surrounding part is sleeved outside the stud and can only move relative to the stud along a single direction of closing the front wall metal plate, and one axial end of the surrounding part is used for enabling the isolation pad to abut against the surface of the front wall metal plate; the fixing part is provided with an accommodating space and is connected with the other axial end of the surrounding part, the accommodating space is used for accommodating the pipeline and is matched with the pipeline in a radial anti-disengaging manner in the pipeline, and when the surrounding part is sleeved on the stud, the fixing part can rotate by taking the stud as a rotating central shaft.

Optionally, the fixing device further comprises: the anti-rotation portions are fixed to the end face, at one axial end, of the end face, used for abutting against the isolation pad, and arranged at intervals in the circumferential direction of the surrounding portion, and can be inserted into the isolation pad to prevent the fixing device from rotating with the stud as a rotating center shaft.

Optionally, the fixing device further comprises: the annular contact boss is fixed with one axial end, and the surrounding part is positioned between the contact boss and the fixed part in the axial direction of the surrounding part;

the contact boss is used for being movably sleeved on the stud in the axial direction and penetrates through the through hole in the isolation pad to be abutted to the surface of the front wall metal plate.

Optionally, the surface of the embracing portion facing the stud in the radial direction is provided with: the clamping teeth are sequentially arranged along the axial direction, and tooth tips of the clamping teeth are used for extending into intervals between two adjacent teeth of the stud along the radial inward direction so as to prevent the surrounding part from moving relative to the stud along the direction far away from the front wall metal plate.

Optionally, the fixing portion includes:

the first limiting arm and the second limiting arm are arranged at intervals along the circumferential direction of the surrounding part, and one ends of the first limiting arm and the second limiting arm in the axial direction are fixed to the surrounding part;

The first elastic arm and the second elastic arm are positioned between the first limiting arm and the second limiting arm, one end of each of the first elastic arm and the second elastic arm is fixed with the other end of each of the first limiting arm and the second limiting arm in the axial direction, and the other ends of the first elastic arm and the second elastic arm are arranged at intervals along the radial direction of the encircling part;

the first limiting arm, the second limiting arm, the first elastic arm and the second elastic arm enclose the accommodating space;

when the first elastic arm and the second elastic arm are extruded along the direction from the fixed part to the surrounding part, the first elastic arm and the second elastic arm are far away from each other so that the pipeline can enter the accommodating space.

Optionally, a distance between the first and second elastic arms gradually decreases in a direction from the fixing portion to the surrounding portion.

Optionally, the fixing portion further includes: the first and second reinforcing ribs are respectively positioned at the outer sides of the first and second limiting arms in the radial direction of the encircling part, and the first and second reinforcing ribs are respectively fixed with one ends of the first and second limiting arms and the encircling part.

Optionally, the embracing portion comprises: the first column part, the middle column part and the second column part are sequentially arranged and fixed together along the axial direction;

the first column part is connected with the fixing part;

The middle column part and the second column part are respectively provided with a through hole for the stud to pass through, and the second column part is used for enabling the isolation pad to abut against the front wall metal plate;

the outer diameters of the first and second column portions are larger than the outer diameter of the middle column portion.

Optionally, the fixing part is connected with the surrounding part in a torsion-resistant manner, and the surrounding part can rotate relative to the stud; or,

the fixing part can rotate relative to the surrounding part, and the surrounding part is used for being connected with the stud in an anti-torsion mode.

Optionally, the surrounding part is a closed ring; or the surrounding part is annular with a plurality of gaps, and the gaps penetrate through the surrounding part along the radial direction.

Optionally, the fixing means is an integrally formed part.

Additionally, the utility model also provides an automobile, it includes: a front wall metal plate; the isolation pad and the pipeline are positioned on the outer side of the front wall metal plate, a stud is fixedly arranged on the surface of the front wall metal plate facing the isolation pad and the pipeline, and the stud penetrates through a through hole in the isolation pad; in any of the above-mentioned fixing devices, the embracing portion is sleeved outside the stud, and abuts against the isolation pad on the surface of the front wall metal plate, and the accommodating space accommodates the pipeline and is matched with the pipeline in a radial anti-drop manner of the pipeline.

Compared with the prior art, the technical scheme of the utility model have following advantage:

make fixing device's the relative double-screw bolt of portion of embracing remove to completely cut apart to fill up and lean on before enclosing the panel beating after on the surface, owing to encircle the portion can not remove along the direction of enclosing the panel beating before keeping away from relatively the double-screw bolt, so can guarantee to encircle the portion and will completely cut apart to fill up and lean on before enclosing the panel beating all the time, realized the fixed of completely cutting off the pad. In addition, the fixing part of the fixing device rotates to the direction of the accommodating space to be consistent with the set direction of the pipeline, and after the pipeline is installed in the accommodating space, the pipeline cannot be separated from the accommodating space, so that the pipeline is well arranged according to the set direction. Because the fixing of isolated pad and the trend of pipeline are arranged simultaneously to the utilization same fixing device, have not only reduced fixing device's quantity, have still reduced before enclose on the panel beating be used for with fixing device complex double-screw bolt quantity and isolated the quantity of stacking up the through-hole to the cost is reduced has alleviateed the car total weight, has promoted syllable-dividing thermal-insulated effect.

Drawings

Fig. 1 is a schematic view of fixing an isolation pad and arranging a pipeline direction outside a front wall metal plate of an automobile by using a fixing device in an embodiment of the present invention, and a cross-sectional view of the fixing device is illustrated in the figure;

Fig. 2 is a perspective view of the fixing device shown in fig. 1.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1, the present embodiment provides an automobile, which includes a front wall metal plate 6, an isolation pad 5 located outside the front wall metal plate 6, and a pipeline 4, where the outside is a side of the front wall metal plate 6 away from a tail of the automobile in a vehicle length direction. The insulating pad 5 has the functions of sound insulation and heat insulation, and can transmit less noise generated by the engine into the automobile, so that the NVH (noise vibration harshness) performance of the automobile is improved. The function of the circuit 4 is numerous and includes, for example, the implementation of the actuation of a clutch, the actuation of a braking system, etc. The pipe 4 is typically a rigid pipe, but it may be a flexible pipe.

The front wall metal plate 6 is fixedly provided with a stud 60 facing the isolation pad 5 and the surface S1 of the pipeline 4. In the present embodiment, the stud 60 is fixed to the surface S1 of the dash metal panel 6 by welding. Of course, in other embodiments, the stud 60 may be fixed to the dash metal plate 6 in other manners. The number of the studs 60 on the front wall sheet metal 6 is several, and in the drawings of the present embodiment, only one stud 60 is illustrated in consideration of the drawing width. The studs 60 penetrate through the through holes 50 on the isolation pad 5, so that the isolation pad 5 is sleeved on the studs 60 of the front wall metal plate 6.

The outside of preceding wall panel beating 6 still is provided with fixing device G, and fixing device G is used for fixing isolated pad 5 before enclosing panel beating 6 to arrange pipeline 4 according to setting for the trend well.

As shown in fig. 1 to 2, the fixing device G includes an encircling portion 1. The surrounding portion 1 is sleeved outside the stud 60 and can move relative to the stud 60 along a direction X1 of closing the front wall metal plate 6, but cannot move relative to the stud 60 along a direction X2 of keeping away from the front wall metal plate 6, that is, after the surrounding portion 1 is sleeved on the stud 60, the surrounding portion 1 can only move relative to the stud 60 along a single direction (i.e., a direction X1) of closing the front wall metal plate 6. The axial one end of embracing portion 1 will completely cut off and fill up 5 and lean on before enclosing on the surface S1 of panel beating 6, because fixing device G' S portion of embracing 1 can not remove along the direction X2 of enclosing panel beating 6 before keeping away from relatively double-screw bolt 60, so can guarantee to embrace portion 1 and will completely cut off and fill up 5 and lean on before enclosing on the surface S1 of panel beating 6 all the time, realized completely cutting off the fixed of filling up 5. After the isolation pad 5 is fixed, the fixing device G is fixed on the axial X relative to the front wall metal plate 6 and cannot shake in the axial X.

The fixing device G further comprises a fixing portion 2 provided with a receiving space 20. Fixed part 2 is connected with the axial other end of embracing portion 1, and accommodation space 20 holds pipeline 4 to at the radial of pipeline 4 and pipeline 4 anticreep cooperation, make pipeline 4 install can not deviate from accommodation space 20 after to in the accommodation space 20. The fixing portion 2 can rotate about the stud 60 as a rotation center axis, so that the orientation of the accommodating space 20 can be adjusted to be identical to the orientation of the pipeline 4. As can be seen from the foregoing, the fixing device G is fixed to the front wall metal plate 6 in the axial direction X, so that the pipeline 4 in the accommodating space 20 is also fixed to the front wall metal plate 6 in the axial direction X, and the pipeline 4 can be arranged according to the set direction by adjusting the direction of the accommodating space 20.

Utilize fixing device G to fix isolated pad 5 on preceding panel beating 6 to arrange the method that is good with pipeline 4 according to setting for the trend and do: the surrounding part 1 is sleeved on the stud 60, so that the fixing device G moves relative to the stud 60 along the direction X1 of closing towards the front surrounding metal plate 6 until the isolation pad 5 is tightly abutted against the surface S1 of the front surrounding metal plate 6 by the axial end of the surrounding part 1. After fixing device G stops to remove along direction X1, owing to encircle portion 1 can not remove along the direction X2 of enclosing panel beating 6 before keeping away from relatively double-screw bolt 60, so isolated pad 5 can support all the time and lean on before enclosing panel beating 6 under the effect of portion 1 of embracing, has realized isolated the fixing of filling up 5. Then, the fixing portion 2 is rotated with the stud 60 as a rotation center axis, so that the direction of the accommodating space 20 on the fixing portion 2 is the same as the set direction of the pipeline 4, and then the pipeline 4 is installed in the accommodating space 20 of the fixing portion 2, so as to arrange the pipeline 4 according to the set direction.

According to the above, the utility model discloses an among the technical scheme, utilize same fixing device G to realize simultaneously that isolated pad 5's fixed and pipeline 4's trend is arranged, not only reduced fixing device G's quantity, still reduced before enclose on the panel beating 6 be used for with fixing device G complex double-screw bolt 60 quantity and isolated pad 5 go up through-hole 50's quantity to the cost is reduced has alleviateed car gross weight, has promoted the thermal-insulated effect that gives sound insulation.

In the present embodiment, the manner in which the embracing portion 1 is movable relative to the stud 60 in the direction X1 toward the dash panel 6, but is not movable relative to the stud 60 in the direction X2 away from the dash panel 6 is: the surface of the surrounding part 1 facing the stud 60 in the radial direction is provided with a plurality of latch teeth 10 which are sequentially arranged along the axial direction X, and the tooth tips of the latch teeth 10 can extend into the interval between two adjacent teeth (not shown) of the stud 60 in the radial inward direction.

When a force is applied to the fixing device G in the direction X1, the latch 10 is pressed in the radially outward direction, so that the embracing portion 1 can move relative to the stud 60 in the direction X1 of closing the front metal sheet 6. When the above-described force applied to the fixing device G is removed, the tips of the latch 10 are restored to the natural state to project in the radially inward direction into the space between the adjacent two teeth of the stud 60, so that the embracing portion 1 cannot move relative to the stud 60 in the direction X2 away from the dash metal panel 6.

The technical scheme of the utility model in, the quantity of latch 10 can be arbitrary for encircling portion 1, in this embodiment to take five latch 10 as an example.

In the present embodiment, the longitudinal section of the latch 10 is a triangle, and the longitudinal section refers to a section obtained by cutting the latch 10 with a plane passing through the central axis of the surrounding portion 1 and parallel to the central axis. Of course, in other embodiments, the longitudinal section of the latch 10 may be set to other shapes according to the shape of the thread on the stud 60, so that the embracing portion 1 can move relative to the stud 60 in the direction X1 of approaching the dash panel 6, but cannot move relative to the stud 60 in the direction X2 of departing from the dash panel 6.

It should be noted that, in the technical solution of the present invention, the surrounding portion 1 can move along the direction X1 of the front wall metal plate 6 relative to the stud 60, but the implementation manner that the stud 60 can not move along the direction X2 of the front wall metal plate 6 away from the front wall relative to the stud 60 should not be limited to this embodiment. This can be achieved, for example, when the surround 1 is threadedly engaged with the stud 60.

In this embodiment, the surrounding portion 1 is an annular shape with two notches 11, the two notches 11 are arranged at an interval of 180 degrees in the circumferential direction of the surrounding portion 1, and the two rows of the latch 10 are provided. In other embodiments, the number of the notches 11 on the surrounding portion 1 may also be one or more than three. It should be noted that, when the number of the notches 11 is two or more, the relative position between the notches 11 should not be limited by the embodiment. In addition, no matter how many notches 11 are formed in the surrounding part 1, it is ensured that the surrounding part 1 can be sleeved on the stud 60 and cannot fall off from the stud 60. The provision of the notches 11 allows a saving of material for the embracing portion 1.

In the modified example of the present embodiment, the surrounding portion 1 is a closed ring shape, i.e. there is no gap 11, and the surrounding portion 1 surrounds the stud 60 along 360 degrees.

In the present embodiment, the embracing portion 1 includes a first pillar portion 12, an intermediate pillar portion 13, and a second pillar portion 14, which are sequentially disposed and fixed together in the axial direction X. The first column part 12 is connected with the fixing part 2, the middle column part 13 and the second column part 14 are both provided with through holes (not marked) for the studs 60 to pass through, the hole diameters of the through holes in the middle column part 13 and the second column part 14 are not smaller than the outer diameter of the studs 60, and the latch 10 is arranged on the middle column part 13. The second column portion 14 abuts the insulating mat 5 against the surface S1 of the dash metal plate 6. The outer diameters of the first pillar portion 12 and the second pillar portion 14 are both larger than the outer diameter of the intermediate pillar portion 13, that is, the first pillar portion 12 and the second pillar portion 14 are thicker than the intermediate pillar portion 13, and the embracing portion 1 is configured to have a structure with thick ends and thin middle.

When the manual part 1 that encircles moves along the direction X1 that closes before enclosing panel beating 6 relative double-screw bolt 60 along drawing close, the operating force that the staff was applyed can be applyed on thicker first column portion 12, second column portion 14 for utilize fixing device G to fix isolated pad 5 on preceding enclosing panel beating 6, and it is more convenient to arrange the manual operation that the pipeline 4 was according to setting for the trend. In addition, the surrounding part 1 is of a structure with thick two ends and thin middle, so that the material of the surrounding part 1 can be saved, the cost of the fixing device G is reduced, and the weight of the fixing device G is reduced.

Further, in the present embodiment, the first pillar portion 12, the intermediate pillar portion 13, and the second pillar portion 14 are all cylindrical. Of course, in other embodiments, the first pillar portion 12, the middle pillar portion 13, and the second pillar portion 14 may be provided with other pillar structures, and the shapes of the three are not limited in the technical solution of the present invention.

In the technical solution of the present invention, the shape and structure of the surrounding portion 1 should not be limited to the embodiments.

In the present embodiment, the fixing portion 2 is connected with the surrounding portion 1 in an anti-torsion manner, that is, the fixing portion 1 and the surrounding portion 1 cannot rotate relatively, and the surrounding portion 1 can rotate relative to the stud 60, so that when the surrounding portion 1 rotates around the stud 60, the fixing portion 2 rotates together to adjust the direction of the accommodating space 20.

In a modification of the present embodiment, the surrounding portion 1 is connected to the stud 60 in a rotationally fixed manner, and the fixing portion 2 is rotatable relative to the surrounding portion 1. When the orientation of the accommodating space 20 is adjusted, the surrounding part 1 is not moved, and the fixing part 2 is rotated only by the stud 60 position rotation central shaft.

In the present embodiment, the fixing portion 2 includes a first defining arm 21, a second defining arm 22, a first elastic arm 23, and a second elastic arm 24 enclosing the accommodating space 20. The first limiting arm 21 and the second limiting arm 22 are arranged at intervals along the circumferential direction of the embracing portion 1, and one end of the first limiting arm 21 and one end of the second limiting arm 22 in the axial direction X are both fixed to the first column portion 12 of the embracing portion 1. The first elastic arm 23 and the second elastic arm 24 are located between the first defining arm 21 and the second defining arm 22. One end of the first elastic arm 23 is fixed to the end of the first limiting arm 21 that is not fixed to the surrounding portion 1, one end of the second elastic arm 24 is fixed to the end of the second limiting arm 22 that is not fixed to the surrounding portion 1, and the other ends of the first elastic arm 23 and the second elastic arm 24 are arranged at intervals along the radial direction of the surrounding portion 1.

When the first elastic arm 23 and the second elastic arm 24 are pressed in a direction (i.e., the direction X1) from the fixed portion 2 to the embracing portion 1, the first elastic arm 23 and the second elastic arm 24 are far away from each other, so that the pipeline 4 can enter the accommodating space 20. After the pipeline 4 enters the accommodating space 20, the first elastic arm 23 and the second elastic arm 24 recover to be deformed, so that the pipeline 4 is prevented from being pulled out of the accommodating space 20.

In the present embodiment, the distance L between the first elastic arm 23 and the second elastic arm 24 is gradually decreased in the direction from the fixed portion 2 to the embracing portion 1, so that the first elastic arm 23 and the second elastic arm 24 are more easily pressed to install the pipeline 4 into the accommodating space 20, and the pipeline 4 is less likely to fall out after entering the accommodating space 20.

In this embodiment, the fixing portion 2 further includes a first reinforcing rib 25 and a second reinforcing rib 26 respectively located at outer sides of the first limiting arm 21 and the second limiting arm 22 in a radial direction of the surrounding portion 1, the first reinforcing rib 25 is fixed to the surrounding portion 1 and one end of the first limiting arm 21 fixed to the surrounding portion 1, and the second reinforcing rib 26 is fixed to the surrounding portion 1 and one end of the second limiting arm 22 fixed to the surrounding portion 1.

When the pipe 4 is inserted into the housing space 20, the first and second limiting arms 21 and 22 may be deformed away from each other by the pressing, and the mechanical strength of the first and second limiting arms 21 and 22 can be improved by providing the first and second reinforcing ribs 25 and 26, and the first and second limiting arms 21 and 22 can be prevented from being broken due to the deformation.

In the present embodiment, the first ribs 25 and the second ribs 26 are both fan-shaped. Of course, the first and second reinforcing ribs 25, 26 may be formed in any other shape.

In the technical solution of the present invention, the shape and structure of the fixing portion 2 should not be limited to the given embodiment.

In this embodiment, the fixing device G further includes a plurality of rotation preventing portions 15, and all the rotation preventing portions 15 are fixed on an end surface S2 at one axial end of the surrounding portion 1, which is used for abutting against the insulating pad 5, and are arranged at intervals in the circumferential direction of the surrounding portion 1. Specifically, the rotation preventing portion 15 is fixed to the second column portion 14. The number of the rotation preventing portions 15 on the fixing device G may be any number, and in this embodiment, three rotation preventing portions 15 are taken as an example. The rotation preventing portions 15 can be inserted into the insulating pad 5 to be in torsional fit with the insulating pad 5, that is, after all the rotation preventing portions 15 are inserted into the insulating pad 5, the fixing device 5 cannot rotate relative to the insulating pad 5 along the circumferential direction around the stud 60, so that deviation of the trend of the pipeline 4 caused by rotation of the fixing device G is avoided.

In the present embodiment, the rotation preventing portion 15 has a conical shape with a tip end that is away from the end surface S2 of the fixing device G in the axial direction X. Since the material of the insulating mat 5 is soft, the tips of the rotation preventing portions 15 can easily penetrate into the insulating mat 5. It should be noted that, in the technical scheme of the utility model, the shape of preventing turning portion 15 should not be limited to the embodiment given, as long as fixing device G will completely cut off and fill up 5 and lean on when enclosing panel beating 6 before, prevent that turning portion 15 can puncture into completely cut off fill up 5 in can.

In this embodiment, the fixing device G further includes an annular contact boss 3, the contact boss 3 is fixed to an axial end of the surrounding portion 1, which is used for abutting against the isolation pad 5, and the surrounding portion 1 is located between the contact boss 3 and the fixing portion 2 in the axial direction X. The contact boss 3 is movably sleeved on the stud 60 in the axial direction X and abuts against the front wall metal plate 6 along the axial direction X after penetrating through the through hole 50 on the isolation pad 5. Thus, after the fixing device G is sleeved on the stud 60 and fitted, the position of the fixing portion 2 of the fixing device G in the axial direction X is constant, and the installation accuracy of the pipeline 4 in the axial direction X is ensured.

Of course, in the technical solution of the present invention, if the requirement of the installation accuracy of the pipeline 4 in the axial direction X is not considered, the fixing device G may not have the contact boss 3.

In the present embodiment, the contact boss 3 is cylindrical, and is provided with a chamfer 30 at an opening of a hollow hole (not identified) for the stud 60 to pass through, so as to avoid a welding point 61 on the stud 60. In the technical solution of the present invention, the shape of the contact boss 3 is not limited.

In the present embodiment, the fixing device G is an integrally formed piece, that is, the fixing device G is formed by an integrally forming method. In other embodiments, some of the components of the fixture G may be fixedly connected together by other than integral molding.

Further, the fixing device G is a plastic part, which is formed by an injection molding method. On one hand, the fixing device G for plastic parts is beneficial to reducing weight, and on the other hand, the processing method is also very simple and is convenient for batch production. However, in the technical solution of the present invention, there is no limitation on the material of the fixing device G.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.

Claims

1. The utility model provides a fixing device for on car, the car is including preceding enclosing the panel beating, being located before enclose the isolated pad and the pipeline in the panel beating outside, before enclose the panel beating towards the fixed surface of isolated pad, pipeline is provided with the double-screw bolt, isolated pad is equipped with the confession the through-hole that the double-screw bolt passed, a serial communication port, fixing device includes:

the surrounding part is sleeved outside the stud and can only move relative to the stud along a single direction of closing the front wall metal plate, and one axial end of the surrounding part is used for enabling the isolation pad to abut against the surface of the front wall metal plate;

the fixing part is provided with an accommodating space and is connected with the other axial end of the surrounding part, the accommodating space is used for accommodating the pipeline and is matched with the pipeline in a radial anti-disengaging manner in the pipeline, and when the surrounding part is sleeved on the stud, the fixing part can rotate by taking the stud as a rotating central shaft.

2. The fixture of claim 1, further comprising: the anti-rotation portions are fixed to the end face, at one axial end, of the end face, used for abutting against the isolation pad, and arranged at intervals in the circumferential direction of the surrounding portion, and can be inserted into the isolation pad to prevent the fixing device from rotating with the stud as a rotating center shaft.

3. The fixture of claim 1, further comprising: the annular contact boss is fixed with one axial end, and the surrounding part is positioned between the contact boss and the fixed part in the axial direction of the surrounding part;

4. The fixing device according to claim 1, characterized in that the surface of the embracing portion facing radially towards the stud is provided with: the clamping teeth are sequentially arranged along the axial direction, and tooth tips of the clamping teeth are used for extending into intervals between two adjacent teeth of the stud along the radial inward direction so as to prevent the surrounding part from moving relative to the stud along the direction far away from the front wall metal plate.

5. The fixture of claim 1, wherein the fixture comprises:

6. The fastening device of claim 5, wherein the distance between the first and second resilient arms decreases in a direction from the fastening portion toward the embracing portion.

7. The fixation device of claim 5, wherein the fixation portion further comprises: the first and second reinforcing ribs are respectively positioned at the outer sides of the first and second limiting arms in the radial direction of the encircling part, and the first and second reinforcing ribs are respectively fixed with one ends of the first and second limiting arms and the encircling part.

8. The securing device of claim 1, wherein the embracing portion comprises: the first column part, the middle column part and the second column part are sequentially arranged and fixed together along the axial direction;

the first column part is connected with the fixing part;

9. The fastening device according to one of claims 1 to 8, characterized in that the fastening part is connected in a rotationally fixed manner to an encircling part which can be rotated relative to the stud; or,

10. The fastening device of any one of claims 1 to 8, wherein the surround is a closed loop; or the surrounding part is annular with a plurality of gaps, and the gaps penetrate through the surrounding part along the radial direction.

11. A fixation device as claimed in any one of claims 1 to 8, wherein the fixation device is an integrally formed part.

12. An automobile, comprising:

a front wall metal plate;

the isolation pad and the pipeline are positioned on the outer side of the front wall metal plate, a stud is fixedly arranged on the surface of the front wall metal plate facing the isolation pad and the pipeline, and the stud penetrates through a through hole in the isolation pad;

the fixing device of any one of claims 1 to 11, wherein the surrounding portion is sleeved outside the stud and abuts the isolation pad against the surface of the front wall metal plate, and the accommodating space accommodates the pipeline and is in anti-drop fit with the pipeline in a radial direction of the pipeline.