DE202005019741U1 - Coupling key for connecting fire hoses has several surfaces and back stop and has different standard wrench widths between back stop and surfaces whereby gripping area is provided on the coupling key - Google Patents

Abstract

The coupling key has several key surfaces. The back stop (2) is at one end of the key. The wrench width between back stop and surfaces are related in such a manner that between back stop and first key surface (1.1), second key surface (1.2), third key surface (1.3), fourth key surface (1.4) and fifth key surface (1.5), there is definite standard wrench width. The coupling key has a gripping area (3).

Description

The The invention relates to a coupling key for coupling fire hoses. such coupling key are used in particular in the fire service.

To DIN 14 822 (Part 1 and Part 2) are standardized coupling key, the for the coupling of A, B and C pressure and suction hoses as well as for the connection are provided on pumps and valves. These keys exist from a handle and a crescent-shaped cam part. The latter indicates depending from the number of sizes of to operate clutches cams, with the distance between two cams each corresponds to a coupling size. Here are the Cam formed as rectangular in cross-section or trapezoidal projections.

An in DE 93 14 270.6 U1 The coupling key shown also serves for the coupling of A, B and C couplings. For this purpose, it also has cam-like elevations on the crescent-shaped part, which serve to encompass the corresponding coupling size.

In DE 92 13 406.8 U1 Another coupling key for fire service fittings is described. This is characterized by the fact that it has another cam and is thus extended by a clutch size D. Nevertheless, he also like the known coupling key described above has a major disadvantage: It is not possible to detect a specific coupling size quickly and accurately by means of the cams, since the assignment of the two required for attaching to the clutch cam is not obvious. Usually you will only find out by testing the cams, which are in the desired distance for the clutch size to be operated.

There at missions the speed of fire plays a major role in the fire department is a fast Domes of fire hoses very important. With the known clutch keys that can not be guaranteed become.

The The object of the invention is to provide a coupling key create, with which a fast and purposeful comprehension of all common coupling sizes is possible.

The Task is solved with the features of the first protection claim. advantageous Embodiments emerge from the subclaims.

Of the inventive coupling key for Domes of fire hoses has a key area consisting of several key areas which is bounded at one end by a stop, respectively the stop and one of the key surfaces one defined wrench size is assignable such that between the stop and the first Key area a Storz D corresponding wrench size, between the stop and the second key area a dangerous good DN32 corresponding Key-width, between the stop and the third key area a Storz C and dangerous goods DN50 corresponding wrench size, between the stop and the fourth key surface a Storz B corresponding key width as well as between the stop and the fifth key surface a Storz A corresponding Key-width is detectable.

Of the as a substantially planar structure executed coupling key has a handle portion which is opposite to the stop End of the key area is arranged. But he can also have a grip area, the on the side facing away from the key areas Side of the key area is arranged.

Of the Grip area has openings for further Operating functions.

So the grip area has an opening for the procedure a square key as well as openings for the Engagement of hex keys.

Besides that is provided in the handle area one of the attachment of the clutch wrench opening.

The the stop opposite, obliquely tapered end of the key area is also as a key used.

On Reason that every wrench size a fitting distance from the key area on a page limiting stop is attributable to one of the key areas is a easy, fast attachment to the right size guaranteed. The stop serves as the first limit at each wrench size, while the second limit depending on on the size of the to be detected Clutch of one of the wrench flats of the key area is formed.

The Invention will be explained in more detail below by exemplary embodiments.

It demonstrate:

1 : Handle area at one end of the key area

2 : Handle area on the back of the key area

3 : Clutch wrench in engagement with wrench size "Storz D"

4 : Clutch wrench engaged with spanner size "Dangerous goods DN32"

5.1 : Clutch wrench in engagement with key width "Storz C"

5.2 : Clutch wrench engaged with key width "Dangerous goods DN50"

6 : Clutch wrench engaged with wrench size "Storz B"

7 : Clutch key engaged with key width "Storz A" The clutch key according to the invention has a key area 1 on, which consists of several contours. Each of these contours represents a key area 1.1 . 1.2 . 1.3 . 1.4 or 1.5 which can be brought into or out of engagement with the couplings to be opened or closed, for example fire hoses. The key area 1 gets at its one end from a stop 2 limited. To attach to the couplings of the fire hoses come here in each case the stop 2 and one of the key areas 1.1 . 1.2 . 1.3 . 1.4 or 1.5 , which are arranged so that they can be assigned to different key widths. So be between the stop 2 and the key area 1.1 the wrench size "Storz D", between the stop 2 and the key area 1.2 "Dangerous goods DN32", between the stop 2 and the key area 1.3 "Storz C and DN50", between the stop 2 and the key area 1.4 "Storz B" and between the stop 2 and the key area 1.5 "Storz A" recorded.

Thus, the stop serves 2 for each wrench size as a point of contact with the coupling of the fire hose to be operated. The second point of attack is formed by the appropriate key area. Because the key areas 1.1 . 1.2 . 1.3 . 1.4 . 1.5 represent a contour area without cams or similar stops, with each of the key faces 1.1 . 1.2 . 1.3 . 1.4 . 1.5 forms a single contour, a quick, basically "blind", attachment to the clutch is possible.

In the execution after 1 there is a grip area 3 at the stop 2 opposite end of the key area 1 ,

In the version of the clutch key after 2 is the grip area 3 on the back of the key area 1 ie on the key surfaces 1.1 . 1.2 . 1.3 . 1.4 and 1.5 opposite side, arranged.

The grip area 3 is still intended for further operating functions. For this purpose he has openings 4.1 . 4.2 . 4.3 . 4.4 on. This is how the opening works 4.1 the inclusion of a square wrench, which can be used for example as Handradersatz in wall hydrant cabinets. The openings 4.2 and 4.3 are intended for the engagement of hex keys with different key sizes, eg for battery terminals in cars or trucks.

Another opening 4.4 may be provided, for example, for attachment to the firefighter's work clothing or for hanging on the wall or in the vehicle.

When running the clutch key with the at the back of the key area 1 arranged grip area 3 is that the stop 2 opposite end E of the key area 1 formed tapered.

Thereby this part of the clutch key (the end E) is also as a key can be used - for example as a key for one Riser or a wall hydrant.

Of the entire clutch key is made of a flat material. All can be with this clutch key common Clutch sizes recorded and even more operating functions can be realized.

This as a substantially planar structure executed coupling key is easy to handle, low weight and relatively small Dimensions and is easy and inexpensive to produce.

When particularly advantageous over the well-known clutch keys But is the trouble-free and fast capture of the correct key size by the coupling key according to the invention see. This is achieved on the basis of the above contoured training of the key areas in conjunction with one all Common key areas Attack.

Claims (8)

Clutch key for coupling fire hoses, one of several key surfaces ( 1.1 . 1.2 . 1.3 . 1.4 . 1.5 ) existing key area ( 1 ), which at one end of a stop ( 2 ), whereby in each case the stop ( 2 ) and one of the key surfaces ( 1.1 . 1.2 . 1.3 . 1.4 . 1.5 ) a defined key width is assignable such that - between the stop ( 2 ) and the first key area ( 1.1 ) a wrench size Storz D, - between the stop ( 2 ) and the second Key area ( 1.2 ) a key width dangerous goods DN32, - between the stop ( 2 ) and the third key area ( 1.3 ) a wrench size Storz C and dangerous goods DN50, - between the stop ( 2 ) and the fourth key area ( 1.4 ) a wrench size Storz B and - between the stop ( 2 ) and the fifth key area ( 1.5 ) a key width Storz A is operable. A coupling key according to claim 1, characterized in that the coupling key designed as a substantially planar structure comprises a grip region ( 3 ), which at the stop ( 2 ) opposite end of the key area ( 1 ) is arranged. A coupling key according to claim 1, characterized in that the coupling key designed as a substantially planar structure comprises a grip region ( 3 ), which on the the key surfaces ( 1.1 . 1.2 . 1.3 . 1.4 . 1.5 ) facing away from the key area ( 1 ) is arranged. A coupling key according to claim 2 or 3, characterized in that the grip area ( 3 ) Openings ( 4.1 . 4.2 . 4.3 . 4.4 ) for further operating functions. Clutch key according to claim 4, characterized in that the grip area ( 3 ) an opening ( 4.1 ) for the engagement of a square wrench has. Clutch key according to claim 4 or 5, characterized in that the grip area ( 3 ) Openings ( 4.2 . 4.3 ) for the engagement of a hex wrench. Clutch key according to one of claims 4 to 6, characterized in that in the grip area ( 3 ) one of the attachment of the clutch wrench serving opening ( 4.4 ) is provided. Clutch key according to one of claims 1 or 3 to 7, characterized in that the stop ( 2 ) opposite, tapered end (E) of the key area ( 1 ) can be used as a key.