Pump head for a bicycle pump and bicycle pump equipped with the pump head

Abstract

Pump head for a bicycle pump, which can be connected to a pump housing or pump hose and which comprises a housing with a connection head for connection to a bicycle valve, characterized in that an air release aid for actuating a valve plunger of the bicycle valve is arranged on the housing.

Description

Field of invention

[0001] The invention relates to a pump head for a bicycle pump. The invention further relates to a bicycle pump equipped with the pump head. Background of the invention

[0002] Bicycle pumps come in various designs. In particular, there are hand pumps with a pump housing containing a piston connected to a handle. There are also floor pumps and various types of electrically operated pumps.

[0003] A bicycle pump consists of a pump head with a connector for attaching it to the bicycle valve. In particular, there are pump heads designed for use with the CLIK VALVE® system. With this system, the connector head incorporates locking elements that engage in a groove on the valve. This eliminates the need for a lever to clamp the connector onto the valve.

[0004] Sometimes you want to not only inflate your bicycle tires but also deflate them, especially to adjust the tire pressure for off-road riding. Manually operating the valve stem, for example with a fingernail, is inconvenient and often quite difficult, particularly with the CLIK VALVE® stem mentioned above.

[0005] Patent DE 10 2018 121 352 B3 therefore proposes equipping a bicycle pump with an air release valve. This valve is operated via a button to release air. However, adding a valve to the pump results in a more complex design and increased weight, and is particularly disadvantageous for portable hand pumps. Object of the invention

[0006] In contrast, the invention is based on the objective of providing a pump head or a bicycle pump equipped with a pump head, which is simple and robust in design and enables comfortable air release. Summary of the invention

[0007] The object of the invention is already achieved by a pump head for a bicycle pump with the features of claim 1 and by a bicycle pump with the pump head.

[0008] Preferred embodiments and further developments of the invention can be found in the subject matter of the dependent claims, the description and the drawings.

[0009] The invention relates to a pump head for a bicycle pump.

[0010] The pump head can be connected to a pump housing or a pump hose. For this purpose, the pump head includes a connector, which may in particular include a thread, especially an internal thread.

[0011] The pump head includes a housing with a connection head for connecting to a bicycle valve.

[0012] The housing can be made of metal or plastic.

[0013] Preferably, the housing, including a connecting piece for the pump housing or the pump hose, is formed in one piece, wherein the connection head is inserted into the housing, in particular into a side wall of the housing, and in particular screwed in.

[0014] According to the invention, an air release aid for actuating a valve stem of the bicycle valve is arranged on the housing of the pump head. In particular, an annular recess with a central nozzle is arranged on the housing.

[0015] The housing therefore includes an integrated actuating mechanism for the bicycle valve plunger. Due to the ring-shaped recess, the housing is centered on the bicycle valve when air is released, and the valve plunger is actuated via the central port to release the air.

[0016] This allows air to be released easily. At the same time, the pump head can be designed to be simple and lightweight.

[0017] The air release device is preferably arranged on a side wall of the housing.

[0018] In particular, the central axis of the annular recess with the central nozzle runs parallel to the central axis of the connection head.

[0019] The connection head and recess, along with the central nozzle, are arranged side by side, allowing for convenient switching between inflating and deflating.

[0020] Preferably, the central axes of the annular recesses intersect with the central nozzle and the central axis of the connection head intersects with the central axis of the housing.

[0021] The ring-shaped recess with the central nozzle can be arranged, in particular, between the connection head and a connecting piece for the pump housing and the hose.

[0022] In particular, the annular recess with the central nozzle can be arranged at the level of the connector, especially at the level of a thread of the connector. This allows for a particularly compact design.

[0023] The annular recess is preferably designed as a circular cylinder with respect to the outer contour, in which a circular cylindrical nozzle sits.

[0024] The top of the circular cylindrical nozzle preferably aligns with the opposite side wall of the housing.

[0025] In one embodiment of the invention, the outer wall of the housing is designed as a circular cylinder segment, at least in the area of ​​the annular recess with the central nozzle.

[0026] The circular cylindrical depression is located in this circular cylinder segment.

[0027] The connection head can, in particular, include a locking mechanism for a click valve (e.g., CLIK VALVE®). The combination of a leverless locking mechanism with the air release aid according to the invention allows for particularly convenient switching between inflation and deflation.

[0028] In the case of a metal component, the ring-shaped recess can be easily created in the housing by milling.

[0029] The invention further relates to a bicycle pump comprising the pump head described above. The bicycle pump can be designed, in particular, as a hand pump with a handle for manual inflation, which can be conveniently carried along. It can also be a floor pump. The use of the connection head for an electrically operated pump is also possible. Brief description of the drawings

[0030] The subject matter of the invention will below be described in relation to the drawings. Fig. 1, Fig. 2, Fig. 3 to Fig. The four illustrated examples will be explained in more detail. Fig. Figure 1 shows a first embodiment of a pump head in a perspective view. Fig. Figure 2 shows an alternative embodiment of a pump head according to the invention in a perspective view. Fig. 3 is a central longitudinal section of the in Fig. 1 pump head shown. Fig. Figure 4 shows a schematic view of an embodiment of a bicycle pump. Detailed description of the drawings

[0031] Fig. Figure 1 shows a perspective view of a first embodiment of a pump head 1 according to the invention.

[0032] The pump head 1 comprises a cylindrical housing 10. A connection head 20 for a bicycle valve is inserted into the side wall of the housing 10, in particular screwed in.

[0033] Below the connection head 20, i.e. in the direction of a connecting piece 13 for a pump housing 3 or a hose, there is an annular recess 11 with a central nozzle 12 in the side wall of the housing 10 as an air release aid.

[0034] The connecting piece 13 includes an internal thread 14 for connection to the pump housing 3 or hose.

[0035] Fig. Figure 2 shows an alternative embodiment of a pump head 1.

[0036] Unlike the one in Fig. In the embodiment shown in Figure 1, the housing 10 comprises a laterally extending extension 15 with a flat side surface 16.

[0037] The connecting head 20 and the ring-shaped recess 11 with the central nozzle 12 are both inserted into the flat side surface 16. Fig. The housing 10 shown in Figure 2 is somewhat heavier due to its larger volume. However, the air release aid in the form of the ring-shaped indentation 11 with the central nozzle 12 can be centered somewhat better on the bicycle valve, since the outer contour of the housing 10 in this area does not follow the curvature of the circular cylindrical side wall.

[0038] Fig. 3 is a central longitudinal section of the in Fig. 1. Pump head shown 1.

[0039] The central axis m AThe connection head 20 runs parallel to the central axis m S of the nozzle 12, around which the ring-shaped depression 11 extends.

[0040] The central axis further intersects m A and m S perpendicular to the central axis m G of the case 10.

[0041] Air can flow to the bicycle valve via the connecting piece 13 with the thread 14 through the channel 17, which runs at a right angle towards the connection head 20.

[0042] In this embodiment, the connecting head 20 comprises locking elements 21, for example in the form of balls, which can move out of the way when the connecting head 20 is placed on the bicycle valve and lock into a groove of the bicycle valve.

[0043] The annular recess 11 can, in particular, have a circular cylindrical outer contour. The central nozzle 12 is also circular cylindrical. The recess 11 can, in particular, be milled into a metal housing. If the pump head 1 is made of plastic, the recess 11 can be provided by the injection mold.

[0044] The top surface of the nozzle 12 is flush with the adjacent side wall of the housing 10. In the case of a circular cylindrical design of the housing 10, the end face of the nozzle 12 can in particular be designed as a circular cylindrical surface.

[0045] The recess 11 and the nozzle 12 are located at the level of the thread 14. This enables a compact design.

[0046] Due to the parallel central axes m A and m S Switching between inflating and deflating is particularly convenient.

[0047] The annular recess can have an outer diameter of 5 to 8 mm, particularly 5 to 6 mm, and / or a depth of 0.8 to 1.5 mm. The outer diameter of the nozzle can be between 1.5 and 2.5 mm.

[0048] Fig. Figure 4 is a schematic representation of a bicycle pump 2.

[0049] The in Fig. The bicycle pump 2 shown in Figure 4 is designed as a hand pump, which can be carried along and comprises a pump housing 3 in which the pump piston is located. The pump is operated manually via the handle 4.

[0050] As explained above, the pump head 1 can also be used for other pump types.

[0051] The invention made it possible to provide a simple and robust bicycle pump with a pump head featuring an air release aid. Reference symbol list 1 pump head 2 bicycle pumps 3 Pump housings 4 handles 10 cases 11 ring-shaped depression 12 nozzles 13 Connecting piece 14 internal threads 15 lateral process 16 flat side surfaces Channel 17 20 connection head 21 locking elements QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2018 121 352 B3

[0005]

Claims

Pump head for a bicycle pump, which can be connected to a pump housing or pump hose and which comprises a housing with a connection head for connection to a bicycle valve, characterized in that an air release aid for actuating a valve plunger of the bicycle valve is arranged on the housing. Pump head according to the preceding claim, characterized in that the air release aid is designed as an annular depression with a central nozzle. Pump head according to one of the preceding claims, characterized in that the air release aid is arranged on a side wall of the housing. Pump head according to one of the preceding claims, characterized in that the central axis of the air release aid is arranged parallel to the central axis of the connection head. Pump head according to one of the preceding claims, characterized in that the central axis of the air release aid and the central axis of the connection head intersect with the central axis of the housing. Pump head according to one of the preceding claims, characterized in that the air release aid is arranged between the connection head and a connecting piece for the pump housing or the hose. Pump head according to one of the preceding claims, characterized in that the annular recess is designed as a circular cylinder in which a circular cylindrical nozzle is seated. Pump head according to one of the preceding claims, characterized in that the outer wall of the housing is designed as a circular cylinder segment at least in the area of ​​the air release aid. Pump head according to one of the preceding claims, characterized in that the annular recess is milled into the housing. Pump head according to one of the preceding claims, characterized in that the connection head has a locking mechanism for a click valve, in particular CLIK ALVE®. Bicycle pump comprising a pump head according to one of the preceding claims.

Images