DE202008008457U1 - Upper shell electronic balance - Google Patents

Abstract

Upper pan Electronic balance with a chassis (1), which is a substantially horizontal one Area (1a), to which a low-path transducer (3) attached which further has a substantially vertical region (1b), on which a display and control unit (2) is arranged, and with a load shell (5) which acts as an overload protection over a Intermediate part (4) on the transducer (3) is supported and this hood-shaped covered, characterized that the chassis of a profile (1) with open and / or closed Channels (8a, 8b, 8c), the channels (8a, 8b, 8c) for receiving supply and connection cables are formed.

Description

The The invention relates to a Oberschalige electronic balance with a Chassis, which has a substantially horizontal area, on which a low-path transducer is attached, the one further substantially vertical region at which a display and operating unit is arranged, and with a load tray, which itself acting as an overload protection Supported intermediate part on the transducer and covers this dome-shaped.

Such a balance is known from the DE 42 33 395 C1 , In this, the horizontal portion of the chassis is formed as a round one-piece pot-shaped tray with three angularly spaced support legs, of which a support foot projects radially from the lower part by means of a connecting piece. At this connector, a vertical tripod is arranged, which has a receiving storage for a display and control unit. The transducer is located inside the tub. The load shell is designed as a round hood and is supported on the transducer by an intermediate part acting as an overload protection. The housing is thus designed relatively complex, its production associated with high costs.

Furthermore, from the DE 10 2005 060 105 B3 an upper-level electronic balance is known in which the chassis consists of a one-piece sheet metal blank, at the horizontal region of the transducer is fixed and at its, formed by an upward bending edge vertical display and control unit is attached. By further bends at least three support feet are formed. The one-piece sheet metal blank faces the DE 42 33 395 C1 a great simplification, to achieve a sufficiently high stability of the chassis, however, a large sheet thickness is necessary, which makes the chassis and thus the balance difficult and thus difficult to transport. In addition, the cables that are laid open on the sheet metal blank make the scale prone to failure in rough industrial operation, since there is a risk that cables may be accidentally damaged or even torn off.

task The invention is therefore an inexpensive, robust and still specify light scales that are suitable for industrial use, especially suitable for the paint and varnish mixing sector is.

These Task is for a balance of the type mentioned solved that the chassis from a profile with open and / or closed channels, the channels for receiving supply and / or connection cables are formed

Such Profiles are usually called hollow profiles in the extrusion process produced.

By the hollow profile can be a given stability achieve significantly lower material costs. Closed channels of the hollow profile can preferably for internal scale connection cables are used while outwardly open channels preferably for external connection cables are used. Examples of this are power cables and cables to external peripherals. These external cables can be used by the user of the balance partly laid in the channels of the profile. Of the free lying part of these cables can be reduced to a minimum.

The Invention is in an embodiment with reference to the attached drawings explained in more detail. there shows:

1 a perspective view of the scale

2 a back view of the scale

3 an exploded view of the scale

In 1 you can see a scale with a chassis 1 with a substantially horizontal area 1a and a substantially vertical area 1b , the scale's transducer is under the round load pan 5 hidden. The display and control unit 2 is at the top of the vertical area 1b attached to the chassis. The chassis 1 consists of a hollow profile, which has open and / or closed channels. Two channels open to the outside 8a and 8b can be seen in the rear view of the scale in 2 , The channels 8a and 8b are designed so that depressed cables remain fixed in these channels. In 2 this is for the power cord 9a and for the data cable 9b shown. Both cables can thereby be separated from the display and control unit 2 are led to the footprint of the scale and are protected. In 1 and 2 is indicated that the cables are passed through a breakthrough in the footprint of the balance. In the event that this breakthrough is located directly under the scale, the cables can reach into the horizontal area of the chassis 1a be guided, and are therefore practically free at any point.

In the exploded view in 3 it can be seen that the profile, which is the chassis 1 also forms one or more closed channels 8c can have. In this closed channel 8c In-house connection cables can be routed. The cable from the transducer 3 to the display and control unit 2 can do this, for example an opening 13 in the graduation cap 12 , which closes the front end of the profile, and a corresponding breakthrough 14 in the housing base plate 10 over the canal 8c in the display and control unit 2 be guided. Also possible are mutually corresponding openings in the housing base plate 10 and the horizontal area 1a of the profile. The cable itself is here in 3 not shown for reasons of clarity. This in-board connection cable is thus very well protected. In the event that the profile consists of an electrically conductive material, the EMC protection is given without further measures. Advantageously, therefore, the profile consists of an aluminum alloy and is produced by extrusion.

In 3 you can still see the transducer 3 that by screws 6b from below at the horizontal area 1a of the chassis 1 is attached. Through these screws 6b at the same time becomes a housing lower plate 10 that the transducer 3 Protected from below, fixed. At the transducer 3 is the intermediate part 4 by means of screws 6c attached, with the intermediate part 4 turn the load pan 5 carries and at the same time over the adjustable stop screws 11 acts as overload protection. The housing base plate 10 is sized in shape and size so that it is from the load shell 5 is covered and thus both the transducer 3 protects against mechanical influences as well as in interaction with the load shell 5 represents a lateral overload protection. It thus forms the fixed part of the vertical and horizontal stop of the overload protection.

The balance stands on two front support feet 7 by screws 6a on the lower housing plate 10 attached, and a rear support leg 7a ,

The width of the profile for the chassis 1 is advantageously 20% to 50% of the width or the diameter of the load shell 5 , In this dimensioning the necessary stability is achieved with the least cost of materials.

With appropriate design of the display and control unit 2 this can alternatively also at the front end of the horizontal area 1a of the chassis 1 be attached. In this case, the vertical part could be 1b of the chassis 1 omitted and the end cap 12 would close the back end of the profile. In this way, both a superscript as well as a superior display and control unit manufacturing technology can be realized very easily.

1

profile

1a

horizontal Area

1b

vertical Area

2

Display- and control unit

3

transducers

4

intermediate part

5

cargo trays

6a, 6b, 6c

screw

7, 7a

Support foot

8a, 8b, 8c

channel

9a

power cable

9b

data cable

10

Housing plate

11

stop screw

12

end cap

13

opening in the graduation cap

14

breakthrough in the housing base plate

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 4233395 C1 [0002, 0003]
• - DE 102005060105 B3 [0003]

Claims (8)

Upper-shell electronic balance with a chassis ( 1 ), which has a substantially horizontal area ( 1a ), on which a low-path transducer ( 3 ), which further comprises a substantially vertical area ( 1b ), on which a display and control unit ( 2 ) and with a load pan ( 5 ), which act as an overload protection intermediate part ( 4 ) on the transducer ( 3 ) and this hood-shaped covered, characterized in that the chassis of a profile ( 1 ) with open and / or closed channels ( 8a . 8b . 8c ), whereby the channels ( 8a . 8b . 8c ) are designed for receiving supply and connection cables. Upper-shell electronic balance according to claim 1, characterized in that the profile is an extruded profile Upper shell scale according to claim 1 or 2, characterized in that the open channel (s) ( 8a . 8b ) of the profile are formed in cross section so that inserted cables ( 9 ) in the channel ( 8a . 8b ) being held. Upper-shell electronic balance according to one of claims 1 to 3, characterized in that the display and operating unit ( 2 ) is arranged at the end of the profile that the profile within the display and control unit ( 2 ) terminates, allowing cables directly from a closed channel ( 8c ) of the profile into the interior of the display and control unit ( 2 ) are feasible. Upper-shell electronic balance according to claim 4, characterized in that the other end of the profile by an end cap ( 12 ) is closable. Upper-shell electronic balance according to one of claims 1 to 5, characterized in that the width of the profile between 20% and 50% of the width of the load shell ( 5 ) is. Upper-shell electronic balance according to one of claims 1 to 6, characterized in that between transducer ( 3 ) and Profile a housing base plate ( 10 ) is arranged, whose shape of the load shell ( 5 ) and which is covered by the load shell dome-shaped. Upper-shell electronic balance according to one of claims 1 to 6, characterized in that the housing lower plate ( 10 ) forms the fixed part of the vertical and horizontal stop of the overload protection.