CN209483772U - Body of a motor car structural elements - Google Patents

Abstract

The utility model relates to auto parts processing technique fields, especially body of a motor car structural elements, including bolt, gasket, nut and rubber sleeve, rubber sleeve includes end, end tail and the through-hole inside rubber sleeve, end can be bonded with the head of bolt, and the end face of inner wall to the end tail of through-hole is equipped with arc transiting surface；Arc transiting surface is equipped with the groove being arranged along rubber sleeve length direction, slidably connects rubber strip in groove, rubber strip protrudes from through-hole wall.This programme make bolt carry out when being fastenedly connected of workpiece, avoid washer squeeze rubber sleeve and inside bending occurs for rubber sleeve, result in the need for manually carrying out stirring keeping rubber sleeve open and flat in component surface, increase the fussy degree of work.

Description

Body of a motor car structural elements

Technical field

The utility model relates to auto parts processing technique fields, and in particular to body of a motor car structural elements.

Background technique

Due to environmental protection and energy-efficient needs, the lightweight of automobile has become the trend of world car development, car mass Half is reduced, fuel consumption can also reduce nearly half.It is present in the market, automobile primary traffic specification vehicle Continuous optimization, specification Under the premise of principal parameter size retains, complete vehicle structure intensity is promoted, consumptive material dosage is reduced, using light material, such as aluminium, magnesium, pottery Porcelain, plastics, glass fibre or carbon fibre composite etc..Wherein, the light material of current automotive light weight technology use is mostly Carbon fiber enhancement resin base composite material.

Application of the carbon fibre composite part on automobile is most of using splicing connection, and for there is detachable maintaining demand Workpiece then need to be fastenedly connected using the component of bolt class.But due to carbon fibre composite anode with higher Current potential, about 300mV, and common aluminium alloy, alloy steel material then cathode potential with higher on automobile, respectively may be about- 780mV and -730mV.It is not difficult to find out that having biggish potential difference between carbon fibre composite and metal material, in corrosive medium In, the galvanic corrosion of metal material can be caused when the two contact, the corrosion rate of metal material is obviously accelerated, in a short time It can lead to effective destruction.

In the prior art, a kind of mode is by bolt sleeve in a rubber sleeve, and rubber sleeve is column structure and is equipped with It is punctured on the workpiece that two need to connect for the through-hole that fastening bolt passes through, then by rubber sleeve, keeps rubber sleeve curved by washer Song fits on the surface of workpiece, reuses nut and fastens bolt, to make two work piece connections.It is padded on set When circle makes rubber sleeve bend outward, need manually to stir rubber sleeve；If not stirring rubber sleeve, it may occur that rubber sleeve It bends inwardly, such washer is difficult to be tightly attached on workpiece, leads to not carry out being fastenedly connected for two workpiece.

Utility model content

The purpose of this utility model is to provide body of a motor car structural elements, and bolt is made to carry out being fastenedly connected for workpiece When, avoid washer squeeze rubber sleeve and inside bending occurs for rubber sleeve, result in the need for manually carrying out stirring keeping rubber sleeve open and flat In workpiece surface, the fussy degree of work is increased.

In order to achieve the above objectives, the base case that the technical solution of the utility model provides are as follows:

Body of a motor car structural elements, including bolt, gasket, nut and rubber sleeve, rubber sleeve include end, end tail and set Through-hole inside rubber sleeve, end can be bonded with the head of bolt, and the end face of inner wall to the end tail of through-hole is equipped with arc-shaped transition Face；Arc transiting surface is equipped with the groove being arranged along rubber sleeve length direction, slidably connects rubber strip in groove, rubber strip is convex For through-hole wall.

This programme has the technical effect that

1, through-hole wall is equipped with the groove being arranged along rubber sleeve length direction, slidably connects rubber strip, rubber in groove Item protrudes from through-hole wall.When bolt is inserted into out of rubber sleeve through-hole, bolt is contacted with through-hole wall, recessed when moving to When the position of slot, the part that bolt end is protruded with rubber strip offsets.During bolt continuously gos deep into, bolt will Rubber strip is pushed to outside rubber sleeve, extends outward one end of rubber strip.

2, the end face of the inner wall of through-hole to end tail is equipped with arc transiting surface, since the end face of inner wall to the end tail of through-hole is arc Shape transition face, arcuately transition face is arranged groove.Rubber strip is carried out along arc transiting surface to external extension at this time, while by In the characteristic of arc, rubber strip is slided along arcwall face always while extending, and enables rubber strip close to workpiece Surface is extended, and rubber strip can be made open and flat in workpiece surface without artificially adjusting rubber strip.

Using the technical program, rubber sleeve is inserted into the workpiece that two need split, then bolt is inserted into rubber sleeve.When After bolt is contacted with the rubber sleeve in rubber sleeve through-hole, constantly deeply with bolt, bolt end is by the rubber in rubber sleeve Adhesive tape is constantly ejected to outside.Extend rubber strip along the inner wall of through-hole inner arc, and then makes rubber strip without artificial It stirs, the surface that can be bonded component is extended, and it is easy to operate, reduce many and diverse degree of work.

Further, the width of the opening portion of groove is less than the width of bottom portion of groove.

The width of the opening portion of groove is less than the width of bottom portion of groove, then makes the section of rubber strip also trapezoidal.Due to ladder Characteristic small under width in shape, will not deviate from during rubber strip slides in groove into groove, and cause rubber strip can not Extended to workpiece surface.

Further, the screw thread cooperated with bolt surface is equipped with inside through-hole.

With the screw thread of bolt surface cooperation inside through-hole, keeps the cooperation of bolt and through-hole even closer, can be avoided simultaneously Bolt with nut during tightening, the case where being reversed due to by external force that nut applied is tightened.

Further, groove is at least three, slidably connects rubber strip in each groove.

Groove at least there are three, rubber strip is slidably connected in each groove, then at least there are three rubber strip for Gasket carries out and being isolated between workpiece.Enable gasket steadily on rubber strip, is not deviated towards either party, avoid padding Piece shaking, the case where causing nut that can not be tightened on bolt, or gasket and workpiece is caused to contact.

Further, it is interference fitted between bolt and rubber sleeve.

After interference fit between bolt and rubber sleeve is assembled to bolt on workpiece, the surface of bolt and rubber sleeve are logical Elastic pressure is generated between the inner wall of hole, to obtain being fastenedly connected for the two, and then is attached workpiece with making bolt fastening.

Detailed description of the invention

Fig. 1 is the assembling figure of the utility model body of a motor car structural elements；

Fig. 2 is the structural schematic diagram of rubber sleeve in Fig. 1；

Fig. 3 is the shaft section cross-sectional view of Fig. 2；

Fig. 4 is the A-A cross-sectional view of Fig. 3.

Specific embodiment

It is further described below by specific embodiment:

Appended drawing reference in Figure of description includes: workpiece 1, rubber strip 2, gasket 3, nut 4, bolt 5, rubber sleeve 6, end First 7, tail 8, groove 9, arc transiting surface 10 are held.

Embodiment is basic as shown in attached drawing 1 to attached drawing 4:

As shown in Figure 1, body of a motor car structural elements, including bolt 5, gasket 3, nut 4 and rubber sleeve 6.Such as Fig. 3 institute Show, rubber sleeve 6 includes end 7, end tail 8 and the through-hole inside rubber sleeve 6, as shown in figure 4,6 inner wall of rubber sleeve has up and down Four grooves 9 in left and right, groove 9 are dovetail groove, and notch is connected to through-hole.

As shown in figure 3, embedded with sliding up and down the rubber strip 2 of connection in groove 9, as shown in figure 4, rubber strip 2 be in it is recessed The section that slot 9 cooperates is trapezoidal structure.A part of rubber strip 2 is located in groove 9, and offsets with the side wall of groove 9, another Part is extend out to the outside of groove 9 by the notch of groove 9.

As shown in figure 3, the inner wall of rubber sleeve 6 has the arc transiting surface 10 for gradually carrying out transition outward from middle part to lower part, Arc transiting surface 10 is extended along the lower surface of end tail 8；The inner wall of rubber sleeve 6 is protruding with the screw thread being adapted to 5 surface of bolt (being not drawn into figure).

When specific operation:

When preliminary assembly, it is aligned the hole of two workpiece 1, rubber sleeve 6 is passed through into hole.Since 6 inner wall of rubber sleeve is equipped with spiral shell Bolt 5 is screwed into rubber sleeve 6 by line, and since rubber sleeve 6 and bolt 5 are interference fitted, rubber sleeve 6 tightly wraps up bolt 5 Firmly.As shown in figure 3, continuing to screw in bolt 5, bolt 5 when the part that the lower surface of bolt 5 is protruded with 2 upper surface of rubber strip offsets Rubber strip 2 is slided downwards along groove 9.Since arc transiting surface 10 extends along 8 lower surface of end tail, then rubber strip 2 is sliding Slided when dynamic also along end 8 lower surface of tail, meanwhile, groove 9 is in isosceles trapezoid shape, rubber strip 2 be difficult to from groove 9 with The opening abjection of inner wall connection.

After the lower surface on 5 head of bolt and the upper surface of 6 end 7 of rubber sleeve contact, as shown in Figure 1, without artificial It is adjusted, rubber strip 2 is to extend along the surface of workpiece 1.Gasket 3 is covered from 5 tail portion of bolt at this time, then nut 4 is screwed On bolt 5, the head of bolt 5 is set tightly to offset with the end 7 of rubber sleeve 6, gasket 3 tightly offsets with rubber strip 2.Effectively The contact between bolt 5 and workpiece 1 has been isolated, has avoided 5 contact workpiece 1 of bolt and the galvanic corrosion of generation.

Claims (5)

1. body of a motor car structural elements, including bolt, gasket, nut and rubber sleeve, it is characterised in that: rubber sleeve includes end Head, end tail and the through-hole inside rubber sleeve, the end can be bondeds with the head of bolt, and the inner wall of the through-hole is to holding tail End face be equipped with arc transiting surface；The arc transiting surface is equipped with the groove being arranged along rubber sleeve length direction, the groove Rubber strip is inside slidably connected, the rubber strip protrudes from through-hole wall.

2. body of a motor car structural elements according to claim 1, it is characterised in that: the width of the opening portion of the groove Less than the width of bottom portion of groove.

3. body of a motor car structural elements according to claim 2, it is characterised in that: the through-hole inside is equipped with and bolt The screw thread of surface engagement.

4. body of a motor car structural elements according to claim 3, it is characterised in that: the groove is at least three, often The rubber strip is slidably connected in one groove.

5. body of a motor car structural elements according to claim 4, it is characterised in that: mistake between the bolt and rubber sleeve It is full of cooperation.