CN1286693C - Head tube rotary structure of automotive carriage - Google Patents

Abstract

The invention is to provide structure around a head pipe of a body frame for a vehicle that can improve welding workability while reducing the number of parts. SOLUTION: A head pipe gusset 20 is fixed to the rear side of the head pipe 19 of the body frame 11, and one end parts 21a, 22a of a lateral pair of seat pillar 21 and down tube 22 extending backward are welded to the head pipe gusset 20. The head pipe gusset 20 has vertically long flat rectangular cross section, and one end parts 21a, 22a, which are formed flat, of the seat pillar 21 and down tube 22 are welded to both side face parts 20e, extending along the longitudinal direction of the vehicle, of the head pipe gusset 20.

Description

The vehicle frame

[technical field that the present invention belongs to]

The present invention relates to the vehicle frame in the vehicles such as a kind of two-wheeled motor vehicle.

[prior art]

Past, the vehicle frame that forms two-wheeled motor vehicle is provided with at leading section and is diverted the head pipe that axle runs through, the person in charge of tubulose and down pipe are from the rear extension of this pipe to vehicle, simultaneously, in order to ensure intensity, between the described person in charge and down pipe, set up the trombone slide that is subjected to of tubulose, and, at the described cylinder head that is subjected to pass through on the trombone slide bracket support driving engine.The described person in charge is shorter, and the leading section of pair of right and left tubulose seat pillar is welded on this person in charge's the rearward end, and rearward extends.

[inventing problem to be solved]

But, in such prior art, the person in charge of tubulose and to be subjected to parts such as trombone slide be essential, when having increased part count, because the cross section of these pipes etc. is rounded, welds so must carry out three-dimensional during the end, thereby have problem such as welding operation difference in welding.

Therefore, the object of the present invention is to provide a kind of when attempting to reduce part count, can improve the vehicle frame of welding operation.

[scheme of dealing with problems]

To achieve these goals, the invention of being put down in writing in the technical scheme 1 is a kind of vehicle frame, it is characterized by, rear side fixed head bobbin carriage (head pipe casstte) at vehicle frame head pipe, an end of the pair of right and left vehicle frame pipe that rearward extends is welded on this bobbin carriage, the cross section of aforementioned bobbin carriage is long flat, rectangular on above-below direction, simultaneously, aforesaid end in the aforementioned vehicle frame pipe forms flat condition, and the end that forms flat condition in the aforementioned vehicle frame pipe is soldered in aforementioned the bobbin carriage along on the side surface part of vehicle fore-and-aft direction configuration.

The invention of being put down in writing in the technical scheme 2 on the basis of the structure that technology case 1 is put down in writing, is characterized by, and aforementioned vehicle frame pipe is seat pillar and a down pipe of being arranged to pair of right and left.

The invention of being put down in writing in the technical scheme 3 on the basis of technical scheme 1 or 2 structures of being put down in writing, is characterized by, and aforementioned bobbin carriage made hollow structure, peripheral part is welded and constituted by two metal sheets.

The invention of being put down in writing in the technical scheme 4 on the basis of the structure that technical scheme 3 is put down in writing, is characterized by, in aforementioned bobbin carriage, antivibrating parts under compressive state by two metal sheet clampings.

[effect of invention]

As mentioned above, adopt the invention of being put down in writing in the technical scheme, with the cross section is that the rear side of pipe is to the end disposed in the bigger bobbin carriage welding of rectangular rigidity, vehicle frame pipe (seat pillar, down pipe) is welded to the rear side of this bobbin carriage, can save the person in charge in the past like this and be subjected to trombone slide, reduce the number of parts.

And an end of vehicle frame pipe forms flat condition, owing on the smooth survey face of the soldered bobbin carriage to the end in this end, so compare with existing three-dimensional welding operation, can improve operability and precision, is easy to utilize the automation of realization welding operations such as robot.

The invention of adopting technical scheme 3 to be put down in writing, on the basis of above-mentioned effect, a bobbin carriage makes hollow structure, periphery is welded and constitutes with two metal sheet structures, therefore, can easily realize the moulding of described bobbin carriage.

The invention of adopting technical scheme 4 to be put down in writing, on the basis of above-mentioned effect, in a bobbin carriage since by two metal sheets with compressive state clamping vibration absorption material, therefore, can reduce the vibration of side, prevent that engine vibration etc. from being propagated and become sound pollution source.And, owing between the metal sheet of centering structure, be provided with antivibrating parts, so, under the situation of centering welding, can compress antivibrating parts, thereby, can be easier under compressive state, be configured.

[simple declaration of accompanying drawing]

Fig. 1 relates to the lateral plan of the two-wheeled motor vehicle of the embodiment of the invention.

Fig. 2 relates to the planar view of the two-wheeled motor vehicle of same embodiment.

Fig. 3 relates to the lateral plan of the vehicle frame of same embodiment.

Fig. 4 relates to the planar view of the vehicle frame of same embodiment.

Fig. 5 is the diagram that expression relates to the part of vehicle frame same embodiment, that the arrow A direction is observed from Fig. 3.

Fig. 6 is the diagram that expression relates to the part of vehicle frame same embodiment, that the arrow B direction is observed from Fig. 3.

Fig. 7 is the diagram that expression relates to the part of vehicle frame same embodiment, that the arrow C direction is observed from Fig. 3.

Fig. 8 relate to same embodiment, along the cutaway view of D-D line among Fig. 3.

[label declaration]

11 vehicle frames

12 single cylinder engines

19 pipes

20 bobbin carriages

The 20a front edge

The 20e side surface part

21 seat pillars (vehicle frame pipe)

22 down pipes (vehicle frame pipe)

29 antivibrating parts

[example of invention]

Below, the present invention will be described according to embodiment.

Fig. 1 to Fig. 8 represents embodiments of the invention.

At first, its structure is described.In the two-wheeled motor vehicle of this embodiment, single cylinder engine 12 is fixed on the vehicle frame 11 as skeleton, and simultaneously, front-wheel 13 is supported in the front of described vehicle frame 11 by steering shaft etc., and, but the postbrachium 14 that trailing wheel 15 is swung by easy on and off is bearing in rear end side.And the propulsive effort of driving engine 12 is passed to described trailing wheel 15 by messenger chain 16 transmission devices such as grade.In addition, in Fig. 1 and Fig. 2, the vehicle seat that label 17 is taken for chaufeur, label 18 is a Fuel Tank.

Shown in Fig. 3 waited, vehicle frame 11 was provided with the tubular head pipe 19 that is run through by aforementioned steering shaft at leading section, and a bobbin carriage 20 is fixed on the rear side of this pipe 19 by welding.

This bobbin carriage 20 by peripheral part 20d is welded, forms cross section flat, rectangular than length on above-below direction to form so-called hollow structure by two metal sheet 20c.In this state, between two metal sheet 20c, be equipped with the antivibrating parts of making by rubber 29 with the compressive state clamping.In antivibrating parts 29, the outstanding locator protrusions 29a that is provided with in two positions of a side, these locator protrusionss 29a is from being formed at knock hole 20 outstanding settings the on the metal sheet 20c.Described antivibrating parts 29 utilizes a locator protrusions 29a among the metal sheet 20c to be installed on the assigned position before two metal sheet 20c are welded, thus two metal sheet 20c of centering welding.

And, with the state of from the beginning managing 19 sandwich a pair of front edge 20a of portion that offers described bobbin carriage 20 front sides is welded.

And, on the one hand, be fixed by welding in as an end 21a of the pair of right and left seat pillar 21 of " vehicle frame pipe " on two side 20e on top of a bobbin carriage 20 postmedian 20b, on the other hand, be fixed by welding on two side 20e of lower side of this rear portion 20b as an end 22a of the pair of right and left down pipe 22 of " vehicle frame pipe ".

These seat pillars 21 and down pipe 22 are in a tubular form, end 21a, a 22a separately is crushed by the stress moulding of pipe, form smooth shape, end 21a, the 22a of this flat condition is fixed on two smooth on the bobbin carriage 20 side 20e by welding.

And the other end 21b of these seat pillars 21 and the other end 22b of down pipe 22 are connected by connection pipe 23.

And then, the leading section 24a of seat rail 24 is fixed in the top of described seat pillar 21, this seat rail 24 rearward approximate horizontal extends, and, the soldered bottom that is fixed to this seat pillar 21 of the leading section 25a of back stay 25, this back stay 25 extends backward obliquely, and end 25b is soldered thereafter is fixed on the aforementioned seat rail 24.

In addition, between the rearward end 24b side of the rearward end 25b of described back stay 25 side and seat rail 24, set up reinforced pipe 26.

And, pars intermedia at the above-below direction of described seat pillar 21 sets up the transverse tube 27 that has connected left and right sides seat pillar 21, simultaneously, as shown in Figure 4, seat tray 30, first carriage 31 and second carriage 32 are erected on the rearward end 24b of two seat rails 24.

As Fig. 3 and shown in Figure 8, on aforementioned bobbin carriage 20, make each root, amount to two through tubes 33 extend through be formed on the facial 20e of left and right sides each to, amount to everywhere among the through hole 20f, by welding fixedly periphery and the through tube 33 of through hole 20f.And, bolt 34 is extended through in the described through tube 33, by making described bolt 34 and nut 36 screws thread fit, driving engine suspension roughly triangular in shape carriage 37 is installed.The cylinder head 12a of driving engine 12 is supported on this driving engine suspension with on the carriage 37.And the front support of Fuel Tank 18 is also the same with through tube 33 with carriage 38, and is soldered fixing in the mode that runs through a bobbin carriage 20.

Therefore, is that 19 rear side is managed in 20 assemblings of the bigger bobbin carriage of rectangular rigidity to the end by welding with the cross section, by seat pillar 21 and down pipe 22 being welded to the rear side of these bobbin carriages 20, can save the person in charge in the past and be subjected to trombone slide, reduce the number of parts.

And, end 21a, the 22a of described seat pillar 21 and down pipe 22 forms flat condition, because on the smooth side surface part 20e of these ends 21a, the soldered bobbin carriage to the end 20 of 22a, so compare with existing three-dimensional welding operation, improve operability and precision, be easier to utilize the automation of realization welding operations such as robot.

And then, even support with the through tube 33 of carriage 37 and Fuel Tank under the situation of welding with carriage 38 on the bobbin carriage 20 to the end will being used to support the driving engine suspension, owing on the flattened side 20e of this bobbin carriage 20, weld, so, can simplify welding operation, simultaneously, owing to the existence of these through tubes 33 and carriage 38, can improve the rigidity of a bobbin carriage 20.

Claims (4)

1, a kind of vehicle frame, it is characterized by, rear side fixed head bobbin carriage at vehicle frame head pipe, an end of the pair of right and left vehicle frame pipe that rearward extends is welded on described the bobbin carriage, the cross section of described bobbin carriage is long flat, rectangular at above-below direction, simultaneously, the described end in the described vehicle frame pipe forms flat condition, and the end that forms flat condition in the described vehicle frame pipe is soldered in described the bobbin carriage along on the side surface part of vehicle fore-and-aft direction configuration.

2, vehicle frame as claimed in claim 1 is characterized by, and described vehicle frame pipe is seat pillar and a down pipe of being arranged to pair of right and left.

3, vehicle frame as claimed in claim 1 or 2 is characterized by, and described bobbin carriage made hollow structure, peripheral part is welded and constituted by two metal sheets.

4, vehicle frame as claimed in claim 3 is characterized by, in described bobbin carriage, antivibrating parts under compressive state by two metal sheet clampings.

Images