CN2170909Y - Bike toothless front fork headset - Google Patents

Abstract

The utility model relates to a toothless front fork bowl group of a bicycle, which is mainly characterized in that a caulking groove is arranged on a front fork tube, a binding sleeve with a groove is sleeved outside the front fork tube, threads are arranged on the periphery of the binding sleeve, so that an upper bowl group component can be bound on the binding groove in a screw way, a ratchet washer is arranged on the inner ring surface of an upper plug in a cushioning way, a convex block extends out of the inner ring surface of the ratchet washer, the convex block can be propped into the caulking groove, and a bolt is used for penetrating and tightly propping the upper plug from the outside; in addition, a tightening ring is arranged on the inner surface of the upper tightening ring, and the tightening ring is also provided with a supporting block which extends into the caulking groove, so that the utility model is integrally and stably combined without loosening.

Description

The utility model relates to a toothless front fork bowl set of a bicycle, in particular to a front fork bowl set which cannot be loosened.

The function of the front fork bowl is to provide the rotation function of the handlebar, so that when the handlebar is turned, it can drive the front wheel to turn together, but it does not affect the original direction of the entire frame body, so the function of the front fork bowl is extremely important. In the design, the fixation of the front fork bowl will be listed as an important design focus, because if the front fork bowl is slightly loose under the condition of continuous steering action and vehicle body vibration, it will affect the entire handlebar and The stability of the combination between the frame bodies, and such a phenomenon will cause danger on the road, and as shown in Figure 4 and Figure 5, the gap between the oblique cone-shaped pressure ring 50 and the upper plug 60 that also has an oblique cone-shaped slope is used. The design of the positioning is achieved by the pressing effect of the pressure ring 50. A compression tube 51 is set above the pressure ring 50. One end of the compression tube 51 is connected with the handlebar bundle tube 52 as a whole, and the compression tube 51 is sleeved on the front fork. Except for the tube 70, the top surface of the front fork tube 70 has a screw hole 71 with an internal thread, which must be screwed into a pressing cover 53, so that the pressing cover 53 presses the pressing tube 51 downwards, so that the end of the pressing tube 51 is pressed. The pressure of the cover 53 is pressed downward, and then the pressure ring 50 is pressed and the oblique cone surface of the upper plug 60 is compressed by longitudinal and radial pressure, and it is positioned by such a pressing effect, and such a structure The type has insufficient concerns in terms of robustness, because in terms of the vibration force of the car body, especially when traveling on bumpy roads, the vibration frequency of the car body is extremely high, and the force is alternating when it is shaken. The type, that is, the continuous alternating vibration of up and down, so the positioning in a tight way may cause wear after being subjected to high-frequency interactive vibration force due to the material, resulting in a gap between the tight fit between the two , produce noise, give people a bad impression of poor quality, or must be adjusted again, so it is not ideal in terms of looseness; in addition, because it is tightened by the inclined surface, in addition to the slope accuracy of the inclined surface must be paid attention to, The tight position of the fit will affect the margin of the upper bowl steel ball 61, and too tight or too loose fit of the upper plug 60 will cause flaws in the rotational performance. It will cause the compression tube 51 to be directly stressed or even deformed, causing the matching accuracy of the pressure ring 50 and the steel ball 61 to be directly damaged, and the collision of the handlebar when the vehicle body is dumped is almost inevitable, which fully proves that such a design has deficiencies.

The main purpose of the utility model is to provide a toothless front fork bowl set for a bicycle. By setting a slot on the front fork, a harness sleeve is arranged on the outside, and the outer screw sleeve is tightened, the upper plug and other components, wherein The inner surface of the upper plug is filled with a ratchet washer, so that the combination of the front fork tube and the front fork bowl and other components is more stable, and it will never loosen.

The utility model provides a toothless front fork bowl set for a bicycle, which includes a front fork tube, a harness, and an upper clamp. There is a longitudinal slot on the top, and the surface is provided with male threads to match the upper plug and the upper clamp. A ratchet washer is set on the harness sleeve. The inner ring of the ratchet washer is provided with a protrusion, and the protrusion is extended In the socket of the front fork tube, the ratchet washer is covered with the upper plug, and a bolt is screwed in from the upper plug and pressed against the ratchet end.

The bicycle toothless front fork headset is characterized in that: the top section of the harness can form a ring slope.

The above toothless front fork bowl set for bicycle is characterized in that: a tightening ring can be provided on the inner ring surface of the upper tightening, and the inner ring surface has a butting block that protrudes into the slot of the front fork tube.

The above toothless front fork bowl set for a bicycle is characterized in that: the inner ring surface of the tightening ring can also form a slope shape matching with the slope of the harness sleeve.

Further illustrate structural feature and purpose of the present utility model below in conjunction with accompanying drawing.

Brief description of the drawings:

Fig. 1 is an exploded view of the utility model.

Fig. 2 is a partially assembled plan view of the upper bowl part of the utility model.

Fig. 3 is the combined plane view of the utility model.

Fig. 4 is an exploded view of the existing front fork bowl set.

Fig. 5 is a combined plan view of the existing front fork bowl set.

Please refer to Fig. 1 and Fig. 2, the front fork tube 10 of the present invention is provided with a slot 11 on its peripheral surface, which is pierced and stretched from the bottom surface of the frame body 12, and then a bundle sleeve with a longitudinal slot 21 is sleeved on it. 20. The top surface of the bundle sleeve 20 forms an inclined surface, and threads are provided on the peripheral side, and the ratchet washer 30, the upper plug 31, the waterproof ring 32, the tightening ring 41 and the upper pressing 40.

The ratchet washer 30 is an annular body, its outer peripheral surface forms a ratchet shape, and a protruding block 301 protrudes from the inner surface, so that the protruding block 301 can be extended in the socket 11 of the front fork tube 10, and its outer surface is sleeved. An upper plug 31 with a waterproof ring 32 is provided on the top pad, and an oblique screw hole 33 is provided on the upper plug 31, so that a bolt 34 can be screwed in from the outside to reach the ratchet part of the ratchet washer 30, Make it positioned; And in the upper portion of the bundle sleeve 20, a tightening 40 is screwed, and a tightening ring 41 is preset on its inner surface, and a block 42 is established on the inner surface of the tightening ring 41, so that the block 42 is also stretched on the In the embedded groove 11 of the front fork tube 10, the inner surface of the tightening ring 41 is an inclined surface, which can be matched with the inclined surface of the top section of the harness sleeve 20, so that when the upper tightening 40 is screwed, the tightening ring 41 can be positioned on the inclined surface. Compressing the harness 20 causes the harness 20 to shrink and have a tightening effect.

When the utility model is assembled, the screw action of the upper tightening 40 can be used to make the harness 20 be pressed by the tightening ring 41 and tightly tightened on the front fork tube 10 by adjusting the slot 21 provided thereon. In combination with the rotation of the upper plug 40 itself, the harness sleeve 20 can be tightened more firmly on the front fork tube 10. In addition, the upper plug 31 has a ratchet washer 30 on its inner surface, so that the protrusion on the upper plug 31 The block 301 can be extended into the slot 11 of the front fork tube 10, and a bolt 34 is screwed in from the outer diameter of the upper plug 31 through the screw hole 33, and its end is against the ratchet position of the ratchet washer 30, And can effectively prevent its reverse loosening.

Therefore, the effect of the present utility model is that the harness 20 can be effectively tightened by the effect of the tightening ring 41, and the tightening ring 41 itself cannot be rotated because the abutting block 42 is in the embedded groove 11. To ensure the positioning of the harness 20, the harness 20 can be firmly connected to the front fork tube 10 through the rotation of the upper clamp 40, and the upper plug 31 is abutted against the ratchet washer by a bolt 34 30 and has a positioning function, and the protrusion 301 of the inner ring surface of the ratchet washer 30 is also extended into the slot 11, so unless the user unscrews the bolt 34 with a tool, the ratchet washer 30 will not be caused by Vibration and loosening, and indeed achieve the effect of preventing loosening that cannot be achieved by existing products, and effectively solve the above-mentioned existing drawbacks caused by poor road conditions.

Claims (4)

1, a kind of bicycle anodontia front fork bowl group, comprise front fork tube, collar, go up packing, it is characterized in that: front fork tube is provided with a caulking groove, and its outer sheathed a branch of cover is established one and slotted longitudinally on this collar, the surface is then established external screw thread and is matched with top plug and last packing, ring is established a projection in the sheathed ratchet washer on collar, this ratchet washer, and this projection is stretched among the caulking groove of front fork tube, the outer sheathed described top plug of this ratchet washer, and a bolt is screwed into beyond the Great Wall and is pushed against on ratchet end by last.

2, bicycle anodontia front fork bowl group according to claim 1 is characterized in that: described collar top section forms a ring inclined-plane.

3, bicycle anodontia front fork bowl group according to claim 2 is characterized in that: the described inner ring surface of going up packing is established a packing ring, and its inner ring surface has to piece to stretching in the caulking groove of front fork tube.

4, bicycle anodontia front fork bowl group according to claim 3, it is characterized in that: described packing ring inner ring surface also forms the inclined plane shape that cooperates with the collar inclined-plane.

Images