FR2541446A1 - TAPE MEASURE - Google Patents

Abstract

THE SUBJECT OF THE INVENTION IS A QUICK REWINDING TAPE METER INCLUDING A COIL 3 ROTATALLY MOUNTED IN AN EXTERNAL CASE 1 EQUIPPED WITH A HANDLE 6 ARRANGED SO AS TO ALLOW THE COIL TO ROTATE TO REWIND A MEASURING TAPE 5. ACCORDING TO L 'INVENTION, A SMALL SPROCKET WITH EXTERNAL TEETH 41 IS ATTACHED TO AN AXLE SUPPORTING THE COIL AND A LARGE SPROCKET WITH INTERNAL TEETH 23 IS ATTACHED TO AN AXIS OF THE HANDLE 6 AND IN MESH WITH THE SMALL PINION. A SPRING MAY BE PROVIDED TO CAUSE THE OUTSIDE FACE OF THE LARGE SPROCKET TO REMAIN IN CONTACT WITH THE SMALL SPROCKET.

Description

The present invention relates to a tape measure and

  especially a fast rewind tape measure.

  Until now, to make a tape measure, was disposed in an outer casing, a spool being rotatable on itself and on which was wound a measuring tape, the ribbon remaining wound on the coil outside periods of time. There is a tape measure fitted with a spiral spring inside the coil, the measuring tape being automatically rewound around the coil under the action of the force

  This type of tape measure is generally

  used when the tape is relatively short, ie less than 10 m long Since it is difficult to rewind the tape using the spring restoring force when the measuring tape has a length of between 10 m and 100 m, the tape measures were made so that we can rewind

  the measuring tape by manually turning a knob.

  Ribbon meters of this type have been made by arranging in a casing a coil which can turn on itself to allow rewinding of the ribbon around the coil and providing on the c 8 t of the housing a handle

to rotate the coil.

  When, instead of a ribbon, a rope is used to measure the lengths, the twisting of the rope is not a problem when rewinding, and so far, for rapid rewinding, accelerated the speed of rewinding several times compared to the speed obtained by the lever On the contrary, when using a tape to measure the lengths, if one

  rewinds the tape at high speed, the latter is sus-

  This explains why he did not

  has been manufactured so far from a rewind tape measure

swims fast.

  A rapid-rewind tape measure model has

  been made public recently This presentation was ef-

  For example, the rapid-rewind tape measure shown in the publication in question has a large external mechanism attached to the handle, a small mechanism attached to the reel, two mechanisms being involved In other words, the

  two mechanisms are nothing but sprockets

  sings external teeth and simply external grip.

  Therefore, the coil is rotated in a direction opposite to the direction of rotation of the joystick and the

  center of the coil is very far from the center of the

  net so when it comes to rewinding the meter to

  ribbon, turn the knob in the opposite direction.

  It is not possible to maneuver

  rewinding of the tape measure In addition, it was impossible to

  sible to make the tape measure itself in a form

  Compact The fast rewind tape measure

So there were disadvantages.

  The object of the present invention is to eliminate these drawbacks and to provide a fast-rewind tape measure. To this end, the invention provides for fixing a large pinion and a small pinion respectively on the handle and on the reel (at In this respect, the present invention does not differ from the already known invention).

  the pinion fixed on the handle is a pinion of annular type.

  inner toothed wheel, while the pinion attached to the spool is a pinion with external teeth, the outer gear pinion being placed inside the inner toothed gear so as to be in internal contact and to be

  engaged with the internal gear.

  The present invention provides a fast rewind tape measure consisting of placing in an outer casing a coil capable of rotating on itself and intended to allow the winding of a ribbon, and providing a handle on the c 8 outer casing so that the spool can be rotated with the handle to rewind a measuring tape, the tape measure being characterized by the fact that a small external gear is attached to a spindle supporting the spool, a large pinion with internal teeth

  is fixed on an axis of the handle and that the pinion has

  ture is in internal contact and meshes with the

pinion with internal teeth.

  In no way limiting, there is shown in the accompanying drawing an exemplary embodiment of the invention, drawing on which

  Figure 1 is a front view of the tape measure.

  FIG. 2 is a sectional view along the line

II-II of Figure 1.

  FIG. 3 is a front view of the coil, for example

  partially cleared, used in the example of the figure Figure 4 is a front view of another example

  of the tape measure according to the invention.

  FIG. 5 is a front view of the tape measure of

  Figure 4 which was removed a half-side.

  FIG. 6 is a front view of the tape measure from which a coil has been removed, and FIG. 7 is a perspective view, partially exploded, of the tape measure of FIG.

a plate supporting the axis.

  In the example of FIGS. 1 to 3, the housing 1 has, at its upper part, a handle 17 and a staking post 1. The stitching element 1 is also provided with a staking system. winding 2 comprising a handle 7 and an axis 21 in one piece with the handle 6 The outer toothed gear 41 of small diameter and having teeth on its circumferential periphery

  external is securely fixed on the axis 21.

  The winding system 2-is located on a salient part connected to the housing 1 and is housed between and supported by the wall of the projecting portion 11 and a support plate 12 covering the opening of the part

  The support portion 24 of the joystick 6 is.

  mounted and supported so as to be able to rotate on itself, in an orifice 14 of the projecting portion 11

  therefore, the winding system 2 can be rotated

  inside the housing 1 when the lever 6 is actuated The inside of the winding system 2 is hollowed out at 22, except for the axis 21 and the teeth of the internal gear are formed on the assembly of

  the inner peripheral wall of the recessed portion.

  A coil 3 for winding the ribbon is housed

  in the housing 1 and receives the measuring tape 5 which comes

  Wrap on it The reel 3, as shown by the

  Figures 2 and 3, is provided with flanges 32 of large diameter.

  be at each end of the axis 31 which is provided with a ring 33 for fixing the end of the measuring tape 5 and a groove 34 intended to receive the ring 33 when the ring 33 is placed Each of the flanges 32 is provided with several orifices distributed over the whole of the

  surface of the flanges 32 The holes allow the evaluation

  cuation of the water and sand that adhere to the ribbon of

  sure when you wash the meter with water Each of

  flanges 32 is further provided with another hole 37

  putting on or off the end of the ribbon 5 on

the ring 33 or out of the ring 33.

  An axle 4 supports the spool and can be inserted into the central hole 36 of the spool 3. One side of the spindle 4 is

  supported by the orifice 15 formed in the support plate

  port 12 and the other c 8 tee of axis 4 is supported by the ori-

  Fice 16 formed in the housing 1 The section of the central hole 36 of the coil 3 is square and the axis 4 also has and partially an outer shape of square section to prevent the axis 4 to turn crazy in the coil 3 Axis 4 extends to the side of the

  support plate 12 to join the bobbin system.

  The extended part is provided with an outer pinion having a small diameter and teeth on its outer periphery, these teeth meshing with the teeth of the inner gear 23. In this way, the axle 4 is rotatably mounted in the casing and it is provided with the external gear 41 placed

  between the winding system 2 and the support plate 12.

  The measuring tape 5 is made of strip steel, a synthetic resin band reinforced with fiber or a similar material and its usual length is included

between 50 m and 100 m.

  The winding system 2 has for example an internal gear 23 d Iun; inside diameter 45 mm, ltax

  4 has an outer pinion 41 having an outer diameter

  12 mm and the outer gear 41 is in internal contact with the internal gear 23 The rotational ratio

  from the internal gear 23 to the outer gear 41 is from 1 to 3.75.

  The drum 31 located in the spool 3 has an outer diameter

  63 mm, and supports a ring 33 and a ribbon of

  steel measuring length of 50 m is fixed on the

  33 When the knob 6 is turned, the steel meter can be rewound easily. Forty rotations of the knob are sufficient to rewind the entire tape and the ribbon can be rewound by a small number of rotations. ribbon can be rewound in the same direction as the direction of rotation of the joystick, rewinding the ribbon does not come with a weird feel and it is possible to rewind

the ribbon in a regular way -

  On the other hand, when the spool is directly connected to the joystick and rotates with it to rewind a ribbon 50 m long around the spool, it takes one hundred and fifty rotations of the joystick to rewind the ribbon and rewind the ribbon are tedious. Referring now to FIGS. 4-7, another type of tape measure according to the present invention will be described.

  This meter is made by lodging in a bot-

  10 a coil 30 for winding the ribbon, using a winding system 20 and an axis 40 for supporting and rotating the coil 30 The casing 10 is constituted by the screwed assembly of two symmetrical plates placed l Opposite the other An opening 19 extending through the two plates in question is provided in an opposite portion.

  of an exit of the ribbon in the box 10 The outer edge

  the opening 19 constitutes the handle 171.

  17 'is formed by the three sides (arranged as three sides of a regular octagon) located around

  of the axis 40 supporting the coil 30 and this handle

  takes at least three continuous straight parts and turns

  at an angle of 1350 The stake staking

  18 'is opposite the handle 17'.

  The winding system 20 is connected to the handle 60 located on the outside of the casing The base of the handle 60 is mounted in a hole in the casing 10 and installed so as to be able to turn on itself inside. A metal ring is fixed to the casing 10 between the orifice formed in the casing 10 and the base of the handle 60 in order to allow the setting

  regular rotation of the handle 60 The bobbin system

  20 is equipped with an internal gear 23 'and an axis 21', these two elements being an integral part of the winding system 20 The winding system 20 is composed of a hard thermoplastic synthetic resin, the polyacetal

for example.

  The axis 40 is placed inside the internal pinion 23 'The pin 40 is provided at one end with an outer pinion 41 The middle portion 42 of the pin 40 is mounted in the orifice 14' at an end The middle part 42 of

  the axis 40 is fixed in the orifice 14 formed in the pla-

  12 ', one end of the axis 21 being simul-

  The axles 40 and 21 are supported, in a rotational manner, by the support plate 12, so that the external gear 41 meshes with the hole 13 in the support plate 12. with the internal gear 23 Preferably, the axis 40 and the support plate 12 are made of synthetic resin

  hard thermoplastic such as polyacetal.

  The leaf spring 80 is placed close to the portion where the exteene pinion 41 is in internal contact with the internal gear 23. The leaf spring 80 recalls the internal gear 23 against the outer gear 41 so that the outer gear 41 can for sure meshes with the inner gear 23 and this spring is therefore used to prevent the gears produce friction noises when

they are turned.

  A metal ring 70 is interposed between the middle part 42 of the axis 40 and the orifice 14 'of the support plate 12' so as to ensure a regular rotation of

  axis 40 and to prevent the occurrence of abra-

may affect the latter.

  The axis 40 has a square outer shape in the

  section of Part 43 which is placed just outside the

  The spool 30 is placed on the portion 43. The central orifice 36 'is formed in the spool 30 in a square shape so as to allow this spool 30 to accurately staple in the spool.

Part 43.

  On both sides, the coil 30 has moreover

  two flanges 32 'and each flange 32' has perforations

  For the remainder, the coil 30 has the same structure as that shown in FIGS. 1-3, so that the measuring tape 50 can be placed between

the flanges 32 'of the coil 30.

  According to the present invention, the winding system is provided with an internal gear which meshes with an external pinion placed on the spindle to enable the spool to be rotated. When the lever mounted on the winding system is rotated, this rotates the coil at a high speed proportional to the rotational ratio of the internal gear with respect to the external gear and thus the

  ribbon can be rewound at high speed.

  the ribbon meter has the following advantage: a large length of unwound ribbon with a length greater than 10 m, and in particular having a length

  between 50 m and 100 m, can be quickly rewound

  Dement. In addition, according to the present invention, the winding system is provided with an internal gear and, therefore, the winding system can be rotated in the same direction as the spool, so that the meter can be rewound in the same direction as the direction of rotation of the joystick, which makes it possible to rewind regularly

tape.

  Furthermore, according to the invention, the bobbin system

  is equipped with an internal gear and can therefore mount the axis of the winding system close to the axis intended

  to the coil, which gives a good stability to the

  seems to be the meter when rewinding can be

  winding the ribbon more regularly In addition, the outer gear is placed in the recessed part of the winding system, we can reduce the volume of the casing, and

  the tape measure is therefore easier to wear.

  The winding system and axle are made of resin

  thermoplastic hard, so they are easy to manufacture.

  Even when they are run at high speed, they

  little noise and, as the metal ring is

  killed at the point of contact between these two elements they are

less exposed to abrasion.

  As the leaf spring is placed in the part o the outer pinion comes into internal contact with the inner pinion so as to come to press the outer periphery of the internal pinion on the outer pinion, the latter meshes securely with the internal pinion When one makes turn the axis at high speed, the gears are

  unable to produce noise.

Claims (4)

  A fast-rewinding tape measure comprising an outer casing, a rotatably mounted spool in the outer casing to allow unwinding of a ribbon, and a handle on the outside of the casing so that it can be rotated the reel using the joystick to rewind a measuring tape,   characterized by the fact that a small pinion with external teeth   The outer gear is attached to an axis supporting the spool, a large inner gear being attached to an axis of the joystick, the outer gear in contact with   internal and meshing with the internal gear.   The tape measure according to claim 1, wherein a spring is applied to an outer face of the   pinion with internal toothing to bring the pinion to   interior to stay in contact with the pinion. external ture.   3 tape measure according to one of claims 1   or 2, in which the axis supporting the coil and the small external gear are integrally made of resin hard synthetic.   4 tape measure according to claim 3, in the   which axis supporting the coil is supported by a   than support in hard synthetic resin, a ring of   metal being interposed between the axis and the support plate.   Tape measure according to one of claims 1 to   4, wherein the outer casing is provided with a support handle disposed at a portion opposite an outlet of the measuring tape, the handle being of three-sided shape   of a regular octagon around the axis supporting the   and comprising at least three continuous straight parts naked and shifted by 1350.