DE202014004397U1 - Adjustment unit of a handlebar / fork assembly - Google Patents

Abstract

Adjustment unit of a handlebar / fork assembly on the frame of an in particular two-wheeled, single-track vehicle for length adjustment of the stem and height adjustment of the handlebar, with a total of four-fold clamping which connects the fork stem (14) and stem (5) to one another in an adjustable manner, characterized in that two of these clamps arise through radial surface pressure and thus two supports are created in each of the two adjustment areas, which ensure additional safety and freedom from play.

Description

The invention relates to an adjustment of a handlebar / fork assembly on the frame ( 15 ) of a Einspurfahrzeuges, which makes it possible, easily, quickly and without the use of tools, the handlebar ( 13 ) in height and the stem ( 5 ) in length to adjust. This is done with a total of five clamps. The lower clamping piece ( 2 ), is powered by two screws ( 17 ) on the steerer tube ( 14 ) clamped. The same clamping piece also has a clamping lever ( 3 ), which connects between angled tube ( 1 ) and clamping piece or can solve. Another clamping lever ( 6 ) is located at the lower end of the stem and clamps it on the angle tube. A central clamping lever ( 4 ) pinches and releases two more compounds at the same time. At the lower end of the angle tube, a connection between the angle tube and fork stem is made, at the top between the angle tube and stem. The invention is used for quick and comfortable adjustment of handlebar height and stem.

State of the art:

From the prior art adjustable handlebar / fork assemblies are known in the bicycle accessories. These are various, mostly isolated adjustment possibilities of such an assembly. Thus, there are inventions that allow the height of the handlebar in extension of the head tube without tools. Others make it possible to adjust the stem angle. Others can be adjusted by a rotation of a component about an axis parallel to the ground and form a combination of adjustment of handlebar height and stem angle. Other technical solutions allow the adjustment of the head length.

Disadvantages of many of these solutions is that they often can not be combined with other adjustment solutions or the adjustment is not possible without tools and technical understanding. Furthermore, in some solutions, the adjustment ranges are rather low. Thus, for example, in those solutions in which the handlebar unit rotates about an axis parallel to the ground on the stem, only a fine adjustment of the handlebar position possible. In addition, there is currently no complete solution on the market, which allows a tool-free adjustment of handlebar height and nose length simultaneously.

The invention is to make it possible by his adjustment options further that a bicycle can be used by several people with different body sizes. It can be adjusted to the desired position with a few simple steps handlebar height and nose length.

Description:

The invention consists of an angle tube which is inserted into the steerer. The steerer is enclosed by the lower clamping piece such that the upper edge of the shank rests on a shoulder provided for this purpose in the interior of the clamping piece. The steerer remains unchanged. By tightening two screws, the clamping piece can be fixed on the steerer tube. A simple slotted Einstellrin, which wraps around the steerer tube and is connected by a thread below the lower clamping piece with this, makes it possible to bias the steering head bearing. The clamping piece is also slotted in the upper third and provided with a clamping lever. By loosening this lever, the angle tube in clamping piece and steerer tube along the steering axis is displaced. By closing this lever, a connection between the clamping piece and the angle tube is formed. A groove in the angle tube is used in the height adjustment as anti-rotation. Your counterpart is connected to the lower clamping lever on the lower clamping piece. At the upper end of the angle tube, the stem is plugged. The special stem is also slotted. Again, a clamp connection can be solved and closed, which allows the movement and fixation of the stem on the angle tube. In the area of clamping, the stem has a surface, its counterpart is located in the adjustment of the upper part of the angle tube. These two surfaces form the anti-twist device of the upper adjustment. Inside the angled tube is another crucial mechanism. A central clamping lever on the knee of the angle tube allows the movement of two in-line drawbars. If the clamp is closed, the tie rods are drawn to the knee of the angle tube. In this case, an applied at the end of the rod plate (end plate) presses on an elastic element, which is supported on another plate (Abstützteller) at the end of the angle tube. By this process, a compression (optionally also by spreading on a cone) of the elastic (possibly slotted) component takes place, which has an increase in diameter result. This creates a surface pressure / friction on the inner surface of the steerer tube (below) or on the inner surface of the stem (above). This not only increases the resistance of the entire unit against slippage of the angle tube / stem, but it also arises above, and as below, in each case a second support point. Due to the surface pressure and the two bearing points, the entire system is free of play. Both adjustment paths can be adjusted independently of each other. So it is easily possible to set the minimum nose length at maximum handlebar height and vice versa. The adjustment paths are limited by end stops.

Show it

1 the invention together with handlebar and frame, in the interior of the steerer is obliquely from above,

2 the invention 1 in an exploded view from the side,

3 the invention opened obliquely from above with all operating levers,

4 the lower clamping piece in section, as well as the structure of the inner clamping by surface pressure in a detailed view,

5 the upper clamping piece in section, as well as the structure of the inner clamping by surface pressure in a detailed view,

6 the invention in the front view.

The 1 shows the invention from above obliquely. At the bottom is the vehicle frame ( 15 ), which at the front end of the head tube ( 21 ) Has. In this head tube ( 21 ) is the tax rate ( 18 ) in which the steerer ( 14 ) can turn. The lower clamping piece ( 2 ) is with screws, preferably 2 pieces, ( 17 ) on the steerer tube ( 14 ) clamped. Between tax rate ( 18 ) and lower clamping piece ( 2 ) is the adjusting ring ( 7 ), which after fixation of the lower clamping piece ( 2 ) on the steerer tube ( 14 ) the tax rate ( 18 ). Top of the clamping piece ( 2 ) protrudes the angle tube ( 1 ). At the knee of the angle tube ( 1 ) is the central clamping lever ( 4 ), which inside the angle tube ( 1 ) the two tension rods ( 8th . 9 ) served. At the upper end of the angle tube ( 1 ) is the stem ( 5 ) attached. This has similar to the lower clamping piece ( 2 ) via a slot ( 20 ) and the upper clamping lever ( 6 ), whereby the stem ( 5 ) on the angle tube ( 1 ) is clamped. At the top of the 1 is still the handlebar ( 13 ) to recognize which of the stem ( 5 ) is held.

The 2 shows an exploded view of the invention.

The 3 shows the invention from obliquely above, in the embodiment with all three clamping levers open ( 3 . 4 . 6 ).

The 4 shows a detail of the invention. You can see the cutout around the lower end of the angle tube ( 1 ) in a sectional view. You can see next to tax rate ( 18 ), Head tube ( 21 ), Steerer tube ( 14 ) and the lower clamping piece ( 2 ), especially by the central clamping lever ( 4 ) triggered clamping mechanism. This pulls when closing the lever ( 4 ) the lower drawbar ( 9 ) on, with her firmly connected end plate ( 10 ). Between this end plate ( 10 ) and the support plate ( 12 ), which in turn at the angle tube ( 1 ) is supported, is the elastic element ( 11 ). This element ( 11 ) is achieved by pulling the end plate ( 10 ) against the backing pad ( 12 ) in its height and thus widened its diameter. This creates a surface pressure on the inner wall of the steerer tube ( 14 ). As already stated in the description, the elastic (slotted) element can also be spread by a cone, which can also lead to a surface pressure on the inner wall of the steerer tube.

The 5 shows a detail of the invention. You can see the cutout around the upper end of the angle tube ( 1 ) in a sectional view. You can see next to the stem ( 5 ), especially by the central clamping lever ( 4 ) triggered clamping mechanism. This pulls in when closing the lever ( 4 ) the upper drawbar ( 8th ) on the end plate ( 10 ). Between this end plate ( 10 ) and the support plate ( 12 ), which in turn at the angle tube ( 1 ) is supported, is the elastic element ( 11 ). This element ( 11 ) is achieved by pulling the end plate ( 10 ) against the backing pad ( 12 ) in its height and thus widened its diameter. This creates a surface pressure on the inner wall of the stem ( 5 ). As already stated in the description, the elastic (slotted) element can also be spread by a cone, which can also lead to a surface pressure on the inner wall of the stem.

LIST OF REFERENCE NUMBERS

1

elbow

2

Lower clamping piece

3

Lower clamping lever

4

Central clamping lever

5

porch

6

Upper clamping lever

7

adjustment

8th

Upper drawbar

9

Lower drawbar

10

Endteller

11

Elastic element

12

supporting pads

13

handlebars

14

steerer

15

frame

16

pen

17

screw

18

tax rate

19

Slot lower clamping piece

20

stem slot

21

head tube

22

guide

23

mother

Claims (10)

Adjustment of a handlebar / fork assembly on the frame of a particular two-wheeled, single-track vehicle for length adjustment of the stem and height adjustment of the handlebar, with a total of four times clamping, which steerer ( 14 ) and stem ( 5 ) connected to each other adjustable, characterized in that two of these clamps caused by radial surface pressure and thus arise at the two adjustment each two supports, which provide additional security and backlash. Clamping device according to claim 1, characterized in that an angled pipe ( 1 ) Steerer ( 14 ), Stem ( 5 ) and handlebars ( 13 ) connects to each other. Clamping device according to claim 1, characterized in that a central lever ( 4 ), preferably by twisting the lever, in both adjustment directions in each case a tension rod ( 8th . 9 ), which produces or dissolves the support mentioned in claim 1. Clamping device according to claim 1, characterized in that the clamping connection between the lower clamping piece ( 2 ) and the steerer without further machining of the steerer tube ( 14 ) after shortening, can be done. Clamping device according to claim 1, characterized in that a setting element ( 7 ) via a thread on the lower clamping piece ( 2 ) and the bias of the frame ( 15 ) bearing ( 18 ) makes adjustable. Clamping device according to claim 1, characterized in that an adjustment of the invention along the steering axis, in combination with the mentioned in claim 3 lever ( 4 ), by an additional lever ( 3 ) on the lower clamping piece, preferably with a rotation of the lever, can be locked or unlocked. Clamping device according to claim 1, characterized in that the lower clamping piece is slotted in the upper third ( 19 ) is to enable the function of claim 6. Clamping device according to claim 1, characterized in that a special stem ( 5 ) over the upper part of the angle tube ( 1 ) is pushed. Clamping device according to claim 1, characterized in that said stem of claim 8 also has a slot (Fig. 20 ) at its lower end. Clamping device according to claim 1, characterized in that on the stem a further clamping lever ( 6 ), which preferably by rotation, the stem ( 5 ) on the angle tube ( 1 ) is stuck.

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