DE10029083A1 - Adapter for bicycle's lightweight pump valve - Google Patents

Abstract

The pressure pin(3) of the adapter is movable in a guiding clamping sleeve(4) and a clamping ring(5) prevents the pin from sliding out. The clamping sleeve is designed so that two air passages(7) are created between the clamping sleeve and adapter housing(1). The pressure pin is connected to an operating cylinder and adjusting screw. The operating cylinder at the front is beveled on two sides for better air guiding.

Description

The present invention relates to an adapter for bicycle Light pump valves with an accurate compressed air measurement and Filling of bicycle tires as done with a car valve can be.

Many bicycle tires today are equipped with a light pump valve equipped, they are predominantly based on feeling (by thumb pressure) inflated by hand, with an accurate air pressure above this Valves is not measurable.

Instead of hand, these bicycle tires are also made with compressed air is filled with an adapter that is available in the bicycle trade free passage, the same outside dimensions as a car valve screwed onto the bicycle valve.

This filling process of the bicycle tire is mostly inaccurate, since the connected tire inflation meter only then takes a measurement indicates when due to air pressure compensation between tires and Filling knife the valve is currently in the open position. Another disadvantage with this filling process occurs when one has filled up too much compressed air, which can only be achieved by loosening the Valve can be drained again and re-measured the filling process must be repeated.

The tire can also burst if the air pressure is uncontrollable enter.  

The object of the invention is to overcome the disadvantages the state of the art this with economic means to create new adapters for bicycle light pump valves with the one presses bicycle tires with compressed air like a car valve can fill a tire inflation knife.

The adapter is screwed onto the light pump valve.

This adapter performs the same function as a car valve, the Compressed air can be fed in precisely metered amounts via the tire inflation knife or be drained again.

If it is inflated by hand, you can use the adapter with the common pressure gauge the air pressure can be checked and checked by Gently press the adapter pin to release compressed air. For the first time, it is now possible to use bicycle tires with a light pump ven tile optimally with measurable compressed air like a car valve, according to the specifications of the respective tire manufacturer.

For the cyclist, this means increased safety as a Overpressure in the tire and thus a bursting of the same avoided The right air is also responsible for driving comfort pressure increased significantly.

Further features, details and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the drawing lt Figure 1 - Figure 2 - Fig. 3..:.

Fig. 1 shows a schematic axial section through an adapter 1 according to the invention for bicycle light pump valves which can be made of metal or plastic, the adapter pressure pin 3 can be of different lengths, since it protrude through it into the light pump Valve with slight pressure opens the valve seal.

Readily recognize from Fig. 1 that the adapter housing 1 on the light-pump-valve via its internal thread 2 is screwed and sealed via the seal 6. The adapter pressure pin 3 is slidably mounted in the guide clamping bush 4 made of plastic and is secured against sliding out to the rear by a clamping ring 5 . The guide clamping bush 4 is designed so that two air channels 7 are provided on both sides between the guide clamping bush 4 and the adapter housing 1 .

When the adapter housing 1 is screwed onto the light pump valve, the adapter pressure pin 3 protrudes into the light pump valve for different lengths, depending on the type of valve, but has no printable contact with the valve seal.

The adapter pressure pin 3 is always adapted in length and diameter to the respective valve type, its diameter being smaller than the bore of the light pump valve into which it projects because of the air passage.

If the adapter pressure pin 3 is moved under slight pressure, the valve seal of the light pump valve opens and the compressed air can flow out. If the pressure on the adapter pressure pin 3 is removed again, the valve seal closes again immediately and the adapter pressure pin 3 slides back under the counter pressure of the valve seal.

When connecting a tire inflation knife or pressing a pressure gauge, its inner pressure pin presses against the adapter pressure pin 3 and this then opens the valve seal, the compressed air from the bicycle tire flows to the measurement display and the air pressure can be read as when connecting to a car valve during the filling process.

This version of an adapter 1 , Fig. 1, for bicycle light pump valves is very inexpensive to manufacture.

FIG. 2 also shows a schematic axial section through an adapter 1 of the same function according to the invention as in FIG. 1, but the adapter pressure pin 3 can also be adjusted in its longitudinal direction compared to FIG. 1 via the actuating cylinder 10 and the adjusting screw 8 . The actuating cylinder 10 is smaller in diameter due to the air passage than the guide bore in the adapter housing 1 and in its front area on two sides 9 to the adapter pressure pin 3 towards to facilitate air entry into the light pump valve or the air outlet.

The adjusting cylinder 10 is made of plastic, its internal thread for the adjusting screw 8 being designed as a clamping thread in order to lock the adjusting screw 8 in any position.

Fig. 3 shows a schematic axial section through an adapter 1 according to the invention for bicycle light pump valves which can be plugged onto the light pump valve and is sealed via the clamping seal 11 and 15 . The adapter pressure pin 3 is slidably mounted in the guide clamping bush 4 and over the push rod 12 to which it is connected.

The guide clamping sleeve 4 is as in Fig. 1 and Fig. 2 so designed that two air channels 7 are present.

In contrast to FIG. 1 and FIG. 2, the adapter pressure pin 3 can be adjusted continuously for all types of light pump valves via the push rod 12 without its length having to be adapted to each type of valve. The push rod 12 is locked by the clamping seal 15 via the knurled nut 13 , for the respective position of the adapter push pin 3 , via the air connection 14 , the tire inflation knife is connected.

This adapter 1 according to FIG. 3 is particularly suitable for bicycle workshops in which the air pressure on bicycles is checked using various types of light pump valves.

Reference list

1

Adapter housing

2

Adapter housing internal thread

3rd

Adapter pressure pin

4

Guide clamping bush

5

Clamping ring

6

poetry

7

Air ducts

8th

Set screw

9

two bevelled sides on the positioning cylinder

10th

Actuating cylinder

11

Clamping seal

12th

Push rods

13

Knurled nut

14

Air connection

15

Clamping seal

16

Valve holder

17th

various light pump valve inserts (lightning valves), available in bicycle shops.

18th

Valve seal

19th

Rocker arm air connection from tire inflator

Claims (5)

1. Adapter for bicycle light pump valves with a movable adapter pressure pin, characterized in that the adapter pressure pin ( 3 ) in the guide clamping bush ( 4 ) is slidably mounted and its sliding out is secured by the clamping ring ( 5 ). 2. Adapter according to claim 1, characterized in that the guide clamping bush ( 4 ) is designed such that two air channels ( 7 ) between the guide clamping bush ( 4 ) and the adapter housing ( 1 ) are present. 3. Adapter according to claim 2, characterized in that the adapter pressure pin ( 3 ) with an actuating cylinder ( 10 ) and the adjusting screw ( 8 ) is connected. 4. Adapter according to claim 3, characterized in that the actuating cylinder ( 10 ) is chamfered forward on two sides ( 9 ) for better air flow. 5. Adapter according to claim 4, characterized in that the adapter pressure pin ( 3 ) after its continuously displaceable mounting in the guide clamping bush ( 4 ) is connected to a push rod ( 12 ) which is chamfered to the front on two sides ( 9 ) and over the Clamping seal ( 15 ) and the knurled nut ( 13 ) is sealed and locked.