CN2628404Y - Steering head with improved structure - Google Patents

Abstract

The utility model relates to a headstock bowl group with a modified structure, the upper and lower bowl groups at the upper and lower ends of the headstock of a bicycle are mainly improved, a convex end of the upper and lower bowl groups is provided with a pipe neck, an outside thread is equipped with the pipe neck, more than one throw part is provided with the appropriate place at the outer edge of the capacity space of the other end, and the outside threads and screws of the upper and lower bowl groups are fixed in the inside thread of the headstock pipe, thus realizing the simple assembly and maintenance effectiveness through the mutually fixed screws of the both; the utility model has eased the possible damage to the upper and lower bowls and the headstock pipe resulted from the upper and lower bowls pressed into the headstock pipe by the existing machinery, and is indeed quite a value in use of the industry.

Description

Structure improved headstock bowl group

Technical field

The utility model relates to the attaching parts in a kind of bicycle field, particularly relates to a kind of structure improved headstock bowl group that is applied to bicycle trade.

Background technology

Well known, it mainly is to be disposed between head tube, handle straight tube and the front fork straight tube three that existing headstock bowl is organized it, and its main function is to make the rotation of front fork straight tube in head tube more smooth and easy, and reaches the effect of safe handling by its stable rotation.Therefore with regard to headstock bowl group, its structure stack-mounted difficulty, and the intensity after the assembling, just representing its integral structure whether to have enough competitive power, yet the package assembly that current industrial community is utilized, it is no matter be concealed or general expression, wherein, following bowl group all is by bearing, watertight cover and packing ring are formed, and the custom usefulness on, following bowl caliber is to be a smooth side, it all is directly to utilize mechanical brute force to be pressed into institute to become with the flush fit mode of head tube, No. 415415 " the package assembly improvement of headstock bowl " sees also shown in Figure 6 as annex one Taiwan patent announcement, and annex two sees also shown in Figure 7 for Taiwan patent announcement No. 414178 " headstock bowl group structure ", yet this kind array mode can cause following many disadvantages, is described as follows:

One, existing upper and lower bowl group is pressed into head tube with machinery, if the angle when being pressed into has deviation slightly, then causes the infringement of upper and lower bowl group easily, and can make the shaft strength can't be average, makes the rotation of handlebar have some setbacks;

Two, the mode of existing upper and lower bowl group indenter pipe, be to utilize machinery to be pressed into, itself just has the difficulty of accuracy rate aspect the mode of inserting, again when maintenance, need utilize instrument that upper and lower bowl group is knocked open, and the as easy as rolling off a log damage that causes upper and lower bowl group of this kind mode, it is quite inconvenient and practical that the group of existing as can be known upper and lower bowl group is unloaded mode;

Three, if existing upper and lower bowl group has deviation when being pressed into, cause the precision of making bicycle low, will cause the qualification rate of making bicycle to descend, and then the cost of enterprise is increased, and make insuperior bicycle, also can influence enterprise on market image and competitive power is reduced;

Above-mentioned is the structure of general existing structure improved headstock bowl group, but because this kind structure not only can cause easily, and has sizable troubles such as misgivings on can be safe in utilization, so integral body, and it can be said so and quite not have practicality.

This shows that above-mentioned existing structure improved headstock bowl group still has many defectives, and demands urgently further being improved.

In order to solve the defective of existing structure improved headstock bowl group, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but does not see always that for a long time suitable design finished by development, and this obviously is the problem that the anxious desire of relevant dealer solves.

Because the defective that above-mentioned existing structure improved headstock bowl group exists, the design people is based on being engaged in this type of product design manufacturing abundant for many years practical experience and expertise, actively studied innovation, in the hope of founding a kind of structure improved headstock bowl group of new structure, can improve general existing on the market conventional structure improved headstock bowl group structure, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the utility model that has practical value finally.

Summary of the invention

Main purpose of the present utility model is, overcome the defective that existing structure improved headstock bowl group exists, and provide a kind of structure improved headstock bowl group of new structure, make its firm more and changeableization, can increase more effect, its structure is simpler and easy, assembling is quick, can reach easy to maintenance, safe effect really again.

The purpose of this utility model and solve its technical problem underlying and realize by the following technical solutions.According to the structure improved headstock bowl group that the utility model proposes, it mainly comprises a head tube, upper and lower side in head tube is respectively equipped with a upper and lower bowl group, this upper and lower bowl group includes upper and lower bearing and upper and lower bowl seat, one end of wherein upper and lower bowl seat is provided with accommodation space, this accommodation space is installed with upper and lower bearing, and the other end then is provided with outside thread, and this outside thread is in and is provided with negative thread in the head tube relatively.

The purpose of this utility model and solve its technical matters and can also adopt following technical measures further to realize.

Aforesaid structure improved headstock bowl group, wherein said internal and external screw thread also can be designed to closeer helicitic texture.

Aforesaid structure improved headstock bowl group wherein is provided with more than one pulling part at upper and lower bowl seat outer rim place.

The utility model compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, the structure improved headstock bowl of the utility model group, promptly utilize a end to be provided with the accommodation space that two bearings are housed in upper and lower bowl group, be provided with several pulling parts at the inside recess of the appropriate location of accommodation space outer rim again, and the protruding place of the other end of accommodation space is provided with a caliber relatively, is provided with outside thread on caliber, with the outside thread of upper and lower bowl group, be fixed at the negative thread of head tube, and with the solid effect that reaches simple and easy assembling, maintenance of both mutual spiral shells;

The utility model is compared with prior art constructions and is had the following advantages:

1, the structure improved headstock bowl of the utility model group, its upper and lower bowl group is the frame mode that utilizes spiral shell solid with the combination of headstock bowl, therefore when being screwed into the headstock bowl, can reach the solid effect of high-precision spiral shell, changed the headstock bowl group of custom usefulness, need utilize machinery to knock in, and increase the trouble when making.

2, the structure improved headstock bowl of the utility model group, the set outside thread of its upper and lower bowl group, when assembling and dismounting maintenance, can reach easy, easy effect, and do not have existing headstock bowl group if when the dismounting maintenance, need to utilize instrument to knock open upper and lower bowl group, and the doubt that injures upper and lower bowl and head tube is arranged.

3, the structure improved headstock bowl of the utility model group, the set outside thread of wherein upper and lower bowl group can be a closeer screw thread again, and this structure can make the upper and lower bowl and the area of contact of head tube increase, and makes structure of the present utility model more firm.

4, the structure improved headstock bowl of the utility model group is simple in structure, thereby cost-cutting is significantly increased economic efficiency.

In sum, the structure improved headstock bowl of the utility model group has above-mentioned many advantages and practical value, more existing structure improved headstock bowl set product has the multinomial effect of enhancement, and simple structure is suitable for practicality, has the extensive value of industry.No matter it structurally or bigger improvement is all arranged on the function, and have large improvement technically, and produced handy and practical effect, and have the effect of enhancement really, thereby be suitable for practicality more, really is a new and innovative, progressive, practical new design.

The specific embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Description of drawings

Fig. 1 is the structure improved headstock bowl of a utility model group schematic appearance;

Fig. 2 is the structure improved headstock bowl of a utility model component solution structure scheme drawing;

Fig. 3 is the structure improved headstock bowl of a utility model group section-drawing;

Fig. 4 is that the structure improved headstock bowl of the utility model is organized another enforcement illustration;

Fig. 5 is the part sectional view of the structure improved headstock bowl of the utility model group; And

Fig. 6 is the part sectional view that the structure improved headstock bowl of the utility model is organized another embodiment.

Fig. 7 is the decomposing schematic representation of existing headstock bowl assembly;

Fig. 8 is the decomposing schematic representation of another existing headstock bowl assembly;

Number in the figure:

10-----bearing 20-----goes up the bowl group

The last bowl seat of 21-----22-----accommodation space

23-----pulling part 24-----caliber

Following bowl of group of 25-----outside thread 30-----

Following bowl of seat of 31-----33-----pulling part

34-----caliber 35-----outside thread

40-----head tube 41-----negative thread

The specific embodiment

Below in conjunction with accompanying drawing and preferred embodiment, to according to the structure improved headstock bowl group that the utility model proposes, its specific embodiment, structure, feature and effect thereof, describe in detail as after.

See also Fig. 1, shown in Figure 2, the structure improved headstock bowl of the utility model group, it mainly comprises: a head tube 40, the upper and lower side in head tube 40 are respectively equipped with bowl group 20 on, following bowl of group 30, it is characterized in that:

The inner edge of these head tube 40 upper and lower ends is provided with a negative thread 41; Last bowl group 20,30 of following bowl groups include: on, lower bearing 10, last bowl seat 21, following bowl seat 31, and wherein go up bowl seat 21, one end of following bowl seat 31 is provided with an accommodation space 22, this accommodation space 22 is to be installed with for two bearings 10, at last bowl seat 21, the inside recess of accommodation space 22 outer rim appropriate locations of following bowl seat 31 is provided with more than one pulling part 23,33, the other end with respect to accommodation space 22 then convexes with a caliber 24,34, caliber 24,34 are provided with outside thread 25,35, bearing 10 is reached upward bowl seat 21, following bowl seat 31 combines bowl group 20, following bowl group 30, to go up bowl group 20, the outside thread 25 of following bowl group 30,35, be fixed at the negative thread 41 of head tube 40, and both mutual spiral shells of mat reach simple and easy assembling admittedly, the effect of maintenance.

The utility model in use, be to utilize a spanner (figure does not show), the holding part (figure does not show) of spanner is held on the pulling part 23,33 of bowl group 20, following bowl of group 30, and pulling part 23,33 and spanner can be pulled bowl group 20, following bowl of group 30 after fixing, thereby internal and external screw thread can be screwed into upper and lower bowl group easily, spiral shell goes out owing to be provided with, and has the effect of easy assembling, maintenance.

For making the utility model reach more high strength structure, this internal and external screw thread is designed to a closeer screw thread, because of closeer screw thread, the upper and lower bowl group and the area of contact of head tube are increased, make that structure of the present utility model is more firm, be particularly useful for the bicycle for mountain-climbing person's that fierceness drives needs.The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any personnel that are familiar with this technology may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent embodiment of equivalent variations, every content that does not break away from technical solutions of the utility model,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.

Claims (3)

1, a kind of structure improved headstock bowl group, it is characterized in that: it mainly comprises a head tube, upper and lower side in head tube is respectively equipped with a upper and lower bowl group, this upper and lower bowl group includes upper and lower bearing and upper and lower bowl seat, one end of wherein upper and lower bowl seat is provided with accommodation space, this accommodation space is installed with upper and lower bearing, and the other end then is provided with outside thread, and this outside thread is in and is provided with negative thread in the head tube relatively.

2, structure improved headstock bowl group according to claim 1 is characterized in that wherein said internal and external screw thread also can be designed to closeer helicitic texture.

3, structure improved headstock bowl group according to claim 1 is characterized in that being provided with more than one pulling part at upper and lower bowl seat outer rim place.

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