Classifications

• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
  • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
  • G01B3/12—Measuring wheels
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
  • G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons

Definitions

• the invention relates to a odometer for maps or the like. according to the preamble of claim 1.
• the generic odometers already have simple reset devices in the form of a small peripheral part mounted in the housing from a corresponding recess of the housing projecting radially outward, which meshes with a pinion additionally fixed on the pointer shaft. It is thus possible to rotate the pointer (s) of the displacement sensor relatively quickly by rotating the last-mentioned gearwheel while simultaneously observing the pointer (s) until the pointer (s) is in again the starting position or zero position, from which a next path measurement can then be started via the impeller.
• the pointer can pivot slightly beyond the zero position during the reset - also as a result of the inertia of the wheels of the reduction gear which are considerably accelerated in this case - and thus during the reset a precise observation of the pointer and a sensitive rotation of the protruding from the housing Gear of the reset device is required.
• the invention has for its object to perfect the odometer according to the preamble of claim 1 so that a simpler and more reliable resetting of the pointer or the pointer of the odometer is achieved in such a simple constructive manner as possible that its manufacture is not more expensive than the production of the generic odometer fails.
• Figure 1 shows the odometer in a plan view.
• FIG. 2 shows an identical top view of the displacement meter after removal of its upper housing half according to FIG. 1;
• Fig. 3 is a view of the odometer in the direction of arrow III of Figure 1, but partially in a cross section along the line III-III of Fig. 2.
• 4 shows a slide of the odometer in a side view in the direction of arrow IV in FIG. 2.
• the odometer shown for maps or the like. has a lower housing half 1 and an upper housing half 2, both of which have a circular pointer housing 3 or 4 on their outer sides, into which a common pointer shaft 7, each with a pointer housing, is mounted axially in the two bottom walls 5 and 6 of the pointer housing 3, 4 a pointer 8 or 9 protrudes.
• a dial 10 which is customary in the case of such travel meters and is not shown here in more detail, is fixed, which, along its circumference, indicates different travel lengths in various concentric arcs of different scales.
• a small impeller 12 mounted in the extended bottom walls 5 and 6 is arranged, which is used when the travel meter is used to roll along the to mes send way of a map or the like. is determined.
• This Latufrad 12 is via a multi-stage reduction gear 13, the largest gear 14 is fixed on the pointer shaft 7, with the latter in a drive connection. Since such reduction gears mounted with their gears in the housing are known and customary, there is no need for a more detailed description here.
• the housing 1, 2 On its side opposite the impeller 12 in the tangential direction 11, the housing 1, 2 has a handle shaft 1 a, 2 a, which is also longitudinally divided within its division plane and is formed from two half-shells, and for the cohesion of the lower housing half 1 together with the handle shaft part 1 a with the upper housing half 2
• Upper handle part 2a serve in the latter and in the lower housing half along the edge of which are arranged small bores 15, into which pins (not shown) engage when the upper housing half 2 is placed thereon. Odometers in the design described so far are known and do not form part of the subject matter of the present invention.
• a cam plate 16 is fixed on the pointer shaft 7 directly next to the gear 14 of the reduction gear 13 and firmly connected to this gear 14, the circumferential curve 17 of which forms part of a mathematically precise Archimedean spiral with its pole is the pointer shaft axis.
• the gear 14, the cam plate 16 and the pointer shaft 7 can expediently be formed together as a one-piece polyamide body.
• a slide 18 is arranged in a transverse direction to the aforementioned tangential direction 11 and at the same time within the plane of the cam disk 16, which in this transverse direction extends parallel to the aforementioned tangential direction 11 radial Direction 19 of the pointer shaft 7 protrudes and bridges the lateral distance between this radial direction 19 and the tangential direction 11.
• the slider 18 forms, after the cam disk 16, an extension, referred to as a restoring pin 20, which can interact with the cam disk 16 in the manner described below.
• the slide 18, which is elongated transversely to the tangential direction 11, in the tangential direction 11 in FIG
• Actuating direction of the actuating pin 24 has hook part 28a, in which one end of a tension spring 21 is suspended, the other end, which protrudes into the recess of the associated half-shell of the handle handle 1a, is suspended from a hollow pin 22 which also forms a bore 15.
• the slide 18 also forms an actuating pin 24 projecting outwards through a matched recess 23 of the lower housing half 1, from which it together with the reset pin 20 counteracts the force of between the hollow pin 22 and the hook 28 securely held tension spring 21 can be flexibly moved into the housing 1, 2. So that the slide 18 cannot tilt and jam here, it also has, between the orbit of the cam disk 16 and the tangential direction 11, a projection 25 which projects further into the housing 1, 2 and which has a side provided on its adjacent bottom wall 5, parallel to the tangential direction 11 extending longitudinal groove 26 engages a guide pin 27 fixed in the bottom wall 5.
• the slide 18 is also preferred, it is also conceivable to arrange it in the housing 1, 2 in the tangential direction 11 in front of the handle 1a, 2a so that its actuating pin from the housing 1, 2 there transversely to Tangential direction 11 protrudes and the reset pin directly in the direction of the actuating pin inward towards the cam disc 16.
• a compression spring can be provided, which engages in the housing 1, 2 on the slide on the other side of the actuating pin and is arranged approximately at a location located to the side of the orbit of the cam disk 16, where the slide 18 is in the exemplary embodiment described and illustrated above.

Applications Claiming Priority (2)

Publications (1)

Family

ID=6228954

Family Applications (1)

Country Status (5)

Citations (3)

• 1984
  • 1984-02-27 DE DE19843407061 patent/DE3407061A1/de not_active Withdrawn
  • 1984-05-21 JP JP59501992A patent/JPS61501281A/ja active Pending
  • 1984-05-21 EP EP84901977A patent/EP0173688A1/de not_active Withdrawn
  • 1984-05-21 WO PCT/DE1984/000116 patent/WO1985004003A1/de not_active Application Discontinuation
  • 1984-08-31 KR KR1019840005351A patent/KR850006071A/ko not_active Application Discontinuation

Patent Citations (3)

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