CN100389039C

CN100389039C - Mounting stucture of opened strut

Info

Publication number: CN100389039C
Application number: CNB2004100571818A
Authority: CN
Inventors: 竹本聪
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2003-09-24
Filing date: 2004-08-27
Publication date: 2008-05-21
Anticipated expiration: 2024-08-27
Also published as: JP4355185B2; CN1600623A; JP2005096545A

Abstract

The purpose of this invention is to provide a mounting structure for an open stay capable of reducing cost and spot points by finely mounting an end portion of the open stay, without providing a bracket neat a joint portion of two components. At a lower end portion 21a of a back pillar 21 and an upper end portion 22a of a rear combination adapter 22 that are parts superimposed with each other at the time of welding, mounting holes 21b, 22b formed so as to penetrate those two components are provided. At the upper end portion 22a of the rear combination adapter 22, a weld nut 5 for mounting a pivot shaft 4 so as to fit with the mounting hole 22b is welded.

Description

Open wide the installation constitution of strut

Technical field

The present invention relates to switching bodies such as tailgate or car protecgulum are maintained the installation constitution of the unlimited strut of assigned position.

Background technology

The rear structure of hatchback vehicle, for having with the upper end is that the structure of tailgate and unlimited strut freely is arranged to open and close in the center, described unlimited strut is used to assist the opening of this tailgate and tailgate is maintained assigned position, for example, and the position of standard-sized sheet (hereinafter referred to as " full open position of coupler ").Unlimited strut usually one end hinged support on tailgate, its other end via the carriage hinged support be disposed at vehicle rear about back prop on [for example, with reference to Japanese kokai publication hei 9-267640 communique (0009～0012 paragraph, Fig. 1)].

In addition, as the installation constitution of so unlimited strut, structure shown in Figure 5 was arranged in the past.In this structure, be configured in vehicle rear about parts constitute by back prop BP and back modular adapter RC, open wide carriage BK and the welded nut WN that strut is installed usefulness being welded with to the place that upside departs from a little from these faying surfaces TF (weld part).

But, in existing structure, because back prop BP is provided with the carriage BK that is used to install the special use of opening wide strut, so there is the high problem of cost on this degree, especially be disposed at vehicle rear about parts with the occasion of two component set-ups, owing to except welding these two parts, also need other weld brackets, exist number of welds to become many problems.

Summary of the invention

Therefore, the object of the present invention is to provide a kind of like this installation constitution of unlimited strut: near the bonding part of two parts, carriage is not set and the end of opening wide strut is installed functionally, can seek the reduction of cost and the minimizing of solder joint number whereby.

In order to solve foregoing problems, the installation constitution of unlimited strut of the present invention is used for, the end of opening wide strut is installed near the weld part of and weld together overlapping by the part of two parts, wherein, on described weld part, form the hole that connects described two parts, the nut that will be used to install jointed shaft engages with described alignment of a hole and with it, and described jointed shaft is used for the end of the described unlimited strut of hinged support.

At this, so-called " unlimited strut " is to be used for assisting tailgate or car protecgulum etc. to open and close the rotation of bodies by the gas counter-force, and the while maintains the switching body member of assigned position.

According to the present invention, the hole on the weld part that is arranged on each parts as when welding location with the hole and after the weld part of two parts of welding, make nut aim at this hole and with its welding.Then, the end of opening wide strut is installed in the Kong Bingyu nut combination that makes jointed shaft pass two parts subsequently on this jointed shaft.According to above way, owing to parts in the parts of overlapping back welding become the makeshift of the carriage that was provided with in the past, thus do not need to prepare in addition carriage, can cost-cutting and minimizing solder joint number.Have again because in the hole that weld part forms, except the effect that is used for the break-through jointed shaft and, the location is not used the hole with the effect in hole so do not need to be provided with respectively to locate when also playing welding on two parts, can reduce manufacturing cost on this degree.

According to the present invention, because hole and nut are set on overlapping part, carriage can be set and the end of opening wide strut can be installed functionally, so can seek the minimizing of cost reduction and solder joint number.

Description of drawings

Fig. 1 is the overall perspective view of the vehicle of the expression installation constitution that uses unlimited strut of the present invention.

Fig. 2 is the exploded drawings of the state after the decomposition of the expression installation constitution that opens wide strut.

Fig. 3 is the enlarged drawing of part of end of representing the unlimited strut of erection plan 2 in detail.

Fig. 4 is the section-drawing along the A-A line of Fig. 3.

Fig. 5 is the figure of the installation constitution of the existing unlimited strut of expression.

The specific embodiment

Suitably embodiments of the invention are described in detail below with reference to accompanying drawing.In the accompanying drawing of institute's reference, Fig. 1 is the overall perspective view of vehicle of the installation constitution of the expression unlimited strut that uses embodiments of the invention, Fig. 2 is the exploded drawings of the state after the decomposition of the expression installation constitution that opens wide strut, and Fig. 3 is the enlarged drawing of part of end of representing the unlimited strut of erection plan 2 in detail.Fig. 4 is the section-drawing along the A-A line of Fig. 3.

As shown in Figure 1, vehicle M is so-called hatchback vehicle, mainly has at its rear portion: be the tailgate 1 that rotate at the center with the upper end; Be configured in the

side panel

2,2 of the left and right sides of this tailgate 1; Be configured in the unlimited strut 3 (only diagram left side) between tailgate 1 and the side panel 2,2.Have again,,, omit the explanation on right side so the left side only is described in the following description because

side panel

2,2 is a left-right symmetric.

As shown in Figure 2, side panel 2 is by the back prop 21 that is configured in upside and back modular adapter 22 these two component set-ups that are configured in downside.Back prop 21 is that the punch forming thickness of slab is about the parts that the plate of 0.8mm forms, and its bottom 21a becomes the part (weld part) of and welding overlapping with the upper end 22a of back modular adapter 22, is located at the outside (the car outside) of back modular adapter 22.On the suitable position of this bottom 21a, be formed with the mounting hole 21b that is used to install following jointed shaft 4.

Back modular adapter 22 is that the punch forming thickness of slab is the parts that the plate of 1mm forms, and its upper end 22a becomes the part (weld part) of and welding overlapping with the bottom 21a of back prop 21.The parting line of upper end 22a (ora terminalis) is the shape of step, welds (with reference to Fig. 3) along the shape (weld is configured to roughly L font) of this step.

In addition, on the suitable position of this upper end 22a, be formed with the mounting hole 22b coaxial with the mounting hole 21b that on the 21a of aforementioned lower end portion, forms.That is, on bottom 21a and upper end 22a, be formed with mounting hole 21b, the 22b that connects these two parts.Have, be welded with the welded nut (with reference to Fig. 4) that is used for fixing jointed shaft 4 on the inboard (car inboard) of the part of the formation mounting hole 22b in the 22a of upper end, this welded nut is aimed at mounting hole 22b (coaxial).The size of

mounting hole

21b, 22b, with the same diameter of pin of the location usefulness of welder, the location of the workpiece during for use in welding.

Open wide strut 3 mainly by constituting: the articulated

section

33,33 on the base end part of bar 32, the leading section that is arranged on this bar 32 and cylinder 31 that inside has been enclosed the cylinder 31 of the hollow of gas, engages at the piston that slides on the inner face of this cylinder 31 (not shown), with this piston and given prominence to outside cylinder 31 with the lower part.And on tailgate shown in Figure 11, the articulated section 33 of bar 32 sides as shown in Figure 3 and Figure 4, is rotated and freely to be entrenched on the head 41 of jointed shaft 4 that section form is a concavity through carriage (not shown) hinged support in the articulated section 33 of cylinder 31 sides.

Have again, be formed with through hole on the aforementioned piston in opening wide strut 3.For this reason, because the gas volume of full close position (having closed the position of tailgate 1 fully) with the gas volume ratio of full open position of coupler, has compressed the volume of bar 32, so the interior pressure of the inner pressure ratio full open position of coupler of full close position is high.Therefore, when reaching tailgate 1 midway, only just can move to full open position of coupler to tailgate 1 thereafter, and it is remained on tailgate 1 on the full open position of coupler with unlimited strut 3.

Jointed shaft 4 is as Fig. 2 and shown in Figure 4, is formed with the spherical head 41 of articulated section 33 that hinged support opens wide the bar 32 of strut 3 on the one end, simultaneously, is formed with the external thread part 42 that screws with welded nut 5 on its other end.Be formed extended at both sides step flange portion 43 to radial outside on the central portion of jointed shaft 4, this flange part 43 contacts with the face of the mounting hole 21b that is formed with back prop 21.

Below with reference to Fig. 2～Fig. 4 the assemble method of the installation constitution of this unlimited strut 3 is described.

As shown in Figure 2, at first, under the overlapping state of the upper end 22a of bottom 21a that makes back prop 21 and back modular adapter 22, the mounting hole 21b, the 22b that form on this bottom 21a and upper end 22a are arranged on the anchor clamps of not shown welder.Specifically, pass mounting

hole

21b, 22b, with back prop 21 and back modular adapter 22 location by the pin that makes the location usefulness that is arranged on the welder.Then, carry out spot welding by described welder going up by four positions (representing with X among Fig. 3) that like this

mounting hole

21b, 22b are arranged on the upper end 22a of the bottom 21a of the back prop 21 that is positioned on the anchor clamps and back modular adapter 22.

After welding back prop 21 and the back modular adapter 22, as shown in Figure 4, from the inboard (car inboard) of back modular adapter 22 welded nut is set and makes it to aim at and weld with mounting hole 22b.So far, the assembling operation that opens wide the installation constitution of strut 3 finishes.

Next, with reference to Fig. 4 the installation method that opens wide strut 3 is described.

As shown in Figure 4, make jointed shaft 4 pass mounting hole 21b, the 22b of back prop 21 and back modular adapter 22, precession welded nut 5 contacts with back prop 21 up to its flange part 43.After having done like this, the articulated section 33 of the bar 32 that opens wide strut 3 is entrenched on the head 41 of the jointed shaft 4 that is fixed on the back prop 21, the installation exercise that opens wide strut 3 thus finishes.

As mentioned above, can obtain following effect in the present embodiment.

Because the upper end 22a of the back modular adapter 22 of and welding overlapping with the bottom 21a of back prop 21 becomes the makeshift of existing design-calculated carriage, thus do not need to prepare in addition carriage, can cost-cutting.Have again, because the mounting hole 21b, the 22b that form on as the bottom 21a of weld part and upper end 22a, except the effect that is used for inserting logical jointed shaft 4 and, also have when welding as the effect of location with the hole, do not use the hole so do not need on two parts, to be provided with respectively the location, can on this degree, reduce manufacturing cost.

In addition, in the present embodiment, because just can deal with problems with 4 in the weld as shown in Figure 3, so compare with the existing structure of the weld of the joint that needs 5 RC that are used for back prop BP and back modular adapter altogether shown in Figure 5 or back prop BP and the joint of carriage BK, can shorten spending in a little welded-on production time.

Have again, in the present embodiment, because can be with 4 joints that carry out back prop 21 and back modular adapter 22, compare with the existing structure of the joint of back modular adapter PC so carry out the unlimited strut of back prop, can improve the bond strength of back prop 21 and back modular adapter 22 with 3 of usefulness shown in Figure 5.In addition, in the present embodiment, because the installation portion of the lap of back prop 21 and back modular adapter 22, so can utilize the power that tightens up of welded nut 5 and jointed shaft 4 to improve the bond strength of back prop 21 and back modular adapter 22 as unlimited strut 3.

In the present embodiment, as shown in Figure 3, because the weld of back prop 21 and back modular adapter 22 is configured to roughly L font, compare so be configured on left and right directions roughly the existing structure of row, can improve the bond strength of back prop 21 and back modular adapter 22 with weld shown in Figure 5.

The present invention is not limited to previous embodiment, can implement with various forms.

In the present embodiment, on the rear structure of vehicle, used unlimited strut of the present invention, but the present invention is not limited to this.For example, in the structure of car protecgulum with unlimited strut supporting of front part of vehicle, can use structure of the present invention in the front portion of vehicle.Have again, in the present embodiment, on vehicle, used structure of the present invention, but much less, so long as utilize the structure that opens wide strut, except vehicle and also can use.

In the present embodiment, about vehicle, respectively be provided with in the structure of back prop 21 and back modular adapter 22 and used the present invention, but the back prop 21 integrally formed structures about for example or about back modular adapter 22 integrally formed structures in also can use the present invention.Particularly in both being made the single-piece structure respectively, since be arranged on both overlapping (the monolithic devices back prop about and behind the monolithic devices modular adapter about) on unlimited strut both are located when welding with mounting hole, so the off normal can easily prevent to weld the time.That is, use the hole owing on modular adapter behind monolithic devices back prop and the monolithic devices, form the unlimited strut of double as with the location of the pair of right and left of mounting hole, so can weld both accurately.

In the present embodiment, the thickness of slab of back prop 21 is about 0.8mm, and the thickness of slab of back modular adapter 22 is about 1mm, but the present invention is not limited to this, can carry out suitable change.But, if as present embodiment, the back prop that is configured in the top is a thin plate, and the back modular adapter that is configured in the below is a slab, then owing to can in the supporting of lightweight back prop, make it to aim at, so the location when welding becomes easier with the back modular adapter.

Claims

1. the installation constitution of a unlimited strut is used on the weld part of and weld together overlapping by the part of back prop and back modular adapter the end of opening wide strut being installed, it is characterized in that,

On described weld part, form the hole that connects described back prop and back modular adapter,

The nut that will be used to install jointed shaft engages with described alignment of a hole and with it, and described jointed shaft is used for the end of the described unlimited strut of hinged support,

Described hole is respectively formed on described back prop and the back modular adapter, and the hole is used in the location during modular adapter as described back prop of welding and back.