TWI611975B - Fork - Google Patents

Description

Fork

The present invention relates to a bicycle or electric vehicle component, and more particularly to a front fork.

Bicycles, also known as bicycles, are a universally used environmentally friendly vehicle. Nowadays, with the concept of low-carbon and environmental protection being deeply rooted in the hearts of the people, the bicycle industry has once again become a sunrise industry, showing unlimited vitality and vitality. The bicycle is mainly composed of a frame, a front fork, a handlebar, a saddle and the like. The front fork is in the front part of the bicycle structure, and is mainly composed of a left fork and a right fork, and is coupled to the front riser. The upper end of the front riser is used to connect the handlebars, and the left and right forks are respectively disposed on the front wheel. The side, and the left and right fork lower ends are combined with the front axle member to form a bicycle guiding system.

As bicycles continue to move toward high-end, stylish, and lightweight routes, the requirements for details are getting higher and higher. As disclosed in the prior application TW 102119341, the front fork 3 can be provided with a high joint strength and can save man-hours. The front fork 3 is suitable for being mounted on the front riser 4, The front riser 4 includes a tubular portion 41 and a cylindrical connecting member 42 at the lower end of the tubular portion 41. The front fork 3 includes a left fork 31 and a right fork 32. The left fork 31 includes a left shoulder. Department 311, And a left fork leg 312 bent downward from the left connecting shoulder 311, the left connecting shoulder 311 having a left recess 313 corresponding to the cylindrical connecting member 42 of the front riser 4, and one located on the left a left connecting end edge 314 at the opening of the recess 313, the left recess 313 of the left fork 31 being welded to the connecting piece 42 of the front riser 4, the right fork 32 including a right connecting shoulder 321 and one from The right connecting shoulder 321 bends the downward right leg 322, which has a right recess 323 corresponding to the cylindrical connecting member 42 of the front riser 4, and an opening in the right recess 323 The right connecting end edge 324 of the right fork 32 is welded to the connecting member 42 of the front riser 4, and the right connecting end edge 324 of the right fork 32 and the left connecting end edge of the left fork 31 314 pairs welded.

However, there is still room for improvement in the details of the prior patent. The tubular portion 41 of the front riser 4 of the prior patent is in communication with the left fork 31 and the right fork 32. Therefore, when immersed in the plating solution for electroplating, the liquid passes through The front riser 4 flows into the left fork 31 and the right fork 32, causing water to accumulate, and when drilling the front riser 4, for example, for arranging the brake wire, the generated iron cuts fall into the left fork 31 and the right fork. In 32, the sound is caused when shaking.

Accordingly, it is an object of the present invention to provide a front fork that can further improve detail.

Thus, the front fork of the present invention is suitable for being mounted on a front riser, the front riser including a tubular portion, and a cylindrical connecting member located below the tubular portion, the lower end of the tubular portion slightly protruding the connecting member, The front fork includes a left fork and a right fork, and the left fork is mounted on the left side of the front riser, The left fork includes a left connecting shoulder and a left fork leg bent downward from the left connecting shoulder, the left connecting shoulder having a left alcove corresponding to the cylindrical connecting member of the front riser, and a a left connecting end edge of the left recess, the left recess of the left fork is disposed on the outer side of the front riser and the outer side of the front side, the right fork is mounted on the right side of the front riser, The right fork includes a right connecting shoulder, and a right fork leg bent downward from the right connecting shoulder, the right connecting shoulder having a right abutment corresponding to the cylindrical connecting member of the front riser, and a a right connecting end edge of the right recess, the right recess of the right fork is disposed on the connecting portion of the front riser and the outer side of the tubular portion, and the lower end opening of the tubular portion is not blocked by the left fork The right fork is shielded.

The effect of the present invention is that since the lower end opening of the tubular portion is not shielded by the left fork and the right fork, and the space between the left fork and the right fork is sealed from the outside, the plating is immersed in the plating solution. When the liquid does not flow into the left fork and the right fork via the front riser, to avoid water accumulation, and for example, when drilling the front riser for arranging the brake line, the generated iron cutting does not fall into the left fork. In the right fork, the sound of the sway is avoided, the detail is improved effectively, and the overall quality and texture are improved, and the object of the present invention is achieved.

1‧‧‧ front fork

11‧‧‧ Left fork

111‧‧‧Left connection shoulder

112‧‧‧left fork

113‧‧‧left alcove

114‧‧‧Left connecting edge

12‧‧‧right fork

121‧‧‧right connecting shoulder

122‧‧‧right fork legs

123‧‧‧Room

124‧‧‧right connecting edge

2‧‧‧Pre-standing pipe

21‧‧‧Tube

22‧‧‧Connecting parts

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a front elevational view showing a conventional front fork; FIG. 2 is a front exploded view. A preferred embodiment of a front fork of the present invention; Figure 3 is a front elevational view showing a left fork and a right fork of the preferred embodiment; and Figure 4 is a cross-sectional view taken along line IV-IV of Figure 3, illustrating a tubular shape of the preferred embodiment The lower end opening is not obscured by the left fork and the right fork.

Referring to Figures 2, 3 and 4, a preferred embodiment of the front fork 1 of the present invention is adapted for mounting on a front riser 2, the front riser 2 comprising a tubular portion 21 and one below the tubular portion 21 The cylindrical connecting member 22 has a lower end slightly protruding from the connecting member 22. The front fork 1 includes a left fork 11 and a right fork 12.

The left fork 11 is mounted on the left side of the front riser 2, the left fork 11 includes a left connecting shoulder 111, and a left fork 112 that is bent downward from the left connecting shoulder 111, wherein the left fork 11 The left connecting shoulder 111 is integrally formed with the left fork leg 112 having a left recess 113 corresponding to the cylindrical connecting member 22 of the front riser 2, and one opening at the opening of the left recess 113 The left connecting edge 114.

The right fork 12 is mounted on the right side of the front riser 2, the right fork 12 is bilaterally symmetrical with the left fork 11, the right fork 12 includes a right connecting shoulder 121, and one is bent downward from the right connecting shoulder 121. The right fork leg 122, wherein the right connecting shoulder 121 of the right fork 12 is integrally formed with the right fork leg 122 having a right alcove 123 corresponding to the cylindrical connecting member 22 of the front riser 2 And a right connecting end edge 124 at the opening of the right recess 123.

In the preferred embodiment, the left alcove 113 of the left fork 11 is provided. The connecting member 22 of the front riser 2 and the outer side of the tubular portion 21, the right recess 123 of the right fork 12 is disposed on the outer side of the connecting member 22 of the front riser 2 and the tubular portion 21. The lower end opening of the tubular portion 21 is not shielded by the left fork 11 and the right fork 12. The left connecting end edge 114 and the right connecting end edge 124 are welded to each other at the connecting member 22, and the left connecting end edge 114 and the right connecting end edge 124 are separated from each other at the tubular portion 21 and welded to the outer side surface of the tubular portion 21, respectively, and after the welding is completed, the left fork 11 and the space in the right fork 12 are sealed. Connected with the outside world.

It is to be noted that the left concave chamber 113 and the right concave chamber 123 may be welded to the outer side of the connecting member 22 and the tubular portion 21 in stages.

In the preferred embodiment, the left fork 11 and the right fork 12 integrally formed of the aluminum alloy are formed into a steel front fork 1, which can save the welding and grinding steps, omit the CNC turning shoulder joint step and the above cost, and reduce the manufacturing cost and labor. One-third of the cost, and can effectively increase the capacity to achieve energy-saving and carbon-reducing effects.

It is further explained that the left alcove 113 of the left fork 11 and the top end of the right alcove 123 of the right fork 12 are flush with the cylindrical connecting member 22 of the front riser 2, so that the appearance is visually more beautiful.

In summary, the effect of the present invention is that the lower end opening of the tubular portion 21 is not shielded by the left fork 11 and the right fork 12, and the space in the left fork 11 and the right fork 12 is sealed from the outside. The communication is so that when the plating solution is immersed in the plating solution, the liquid does not flow into the left fork 11 and the right fork 12 via the front riser 2, thereby avoiding water accumulation, and for example, in order to configure the brake wire. When the front riser 2 is drilled, the generated iron cut does not fall into the left fork 11 and the right fork 12, avoiding the sound when shaking, effectively improving the details, improving the overall quality and texture, and indeed achieving the present. The purpose of the invention.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

1‧‧‧ front fork

11‧‧‧ Left fork

111‧‧‧Left connection shoulder

112‧‧‧left fork

113‧‧‧left alcove

114‧‧‧Left connecting edge

12‧‧‧right fork

121‧‧‧right connecting shoulder

122‧‧‧right fork legs

123‧‧‧Room

124‧‧‧right connecting edge

2‧‧‧Pre-standing pipe

21‧‧‧Tube

22‧‧‧Connecting parts

Claims (3)

A front fork adapted to be mounted on a front riser, the front riser including a tubular portion, and a cylindrical connecting member below the tubular portion, the lower end of the tubular portion slightly protruding the connecting member, the front fork The utility model comprises: a left fork, the left fork is mounted on the left side of the front riser, the left fork comprises a left connecting shoulder, and a left fork leg bent downward from the left connecting shoulder, the left connecting shoulder has a left recess corresponding to the cylindrical connecting member of the front riser, and a left connecting end edge at the opening of the left recess, the left recess of the left fork being disposed on the connecting member of the front riser and the tubular An outer side of the portion; and a right fork mounted to the right side of the front riser, the right fork including a right connecting shoulder, and a right fork leg bent downward from the right connecting shoulder, The right connecting shoulder has a right abutment corresponding to the cylindrical connecting member of the front riser, and a right connecting end edge at the opening of the right recess, the right alcove of the right fork is disposed on the front riser a connecting member and an outer side surface of the tubular portion, the lower end opening of the tubular portion is not The left fork and the right fork are shielded, and the vertical portion of the left connecting end edge and the right connecting end edge are welded to each other at the connecting member, and the left connecting end edge and the right connecting end edge are separated from each other at the tubular portion And respectively welded to the outer side surface of the tubular portion, the radius of curvature of the horizontal portion of the left connecting end edge and the right connecting end edge welded to the outer side surface of the tubular portion is corresponding to the cross section of the tubular portion a radius of the out-of-plane contour, the left recess of the left fork is welded to the connecting piece of the front riser and the outer side of the tubular portion, and the right recess of the right fork is welded to the connecting piece of the front riser and the tubular On the outer side of the part. The front fork according to claim 1, wherein the left connecting shoulder of the left fork is integrally formed with the left fork leg, and the right connecting shoulder of the right fork is integrally formed with the right fork leg. The front fork according to claim 1, wherein the left alcove of the left fork and the right alcove top of the right fork are flush with the cylindrical connecting piece of the front riser.