GB2348184A - Braking device of a measuring tape - Google Patents

Braking device of a measuring tape Download PDF

Info

Publication number
GB2348184A
GB2348184A GB9906506A GB9906506A GB2348184A GB 2348184 A GB2348184 A GB 2348184A GB 9906506 A GB9906506 A GB 9906506A GB 9906506 A GB9906506 A GB 9906506A GB 2348184 A GB2348184 A GB 2348184A
Authority
GB
United Kingdom
Prior art keywords
measuring tape
casing
buffer body
braking device
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9906506A
Other versions
GB9906506D0 (en
Inventor
Henry Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Index Measuring Tape Co Ltd
Original Assignee
Index Measuring Tape Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Index Measuring Tape Co Ltd filed Critical Index Measuring Tape Co Ltd
Priority to GB9906506A priority Critical patent/GB2348184A/en
Priority to FR9904601A priority patent/FR2792401B3/en
Publication of GB9906506D0 publication Critical patent/GB9906506D0/en
Priority to DE29911539U priority patent/DE29911539U1/en
Publication of GB2348184A publication Critical patent/GB2348184A/en
Withdrawn legal-status Critical Current

Links

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
    • G01B3/10—Measuring tapes
    • G01B3/1005—Means for controlling winding or unwinding of tapes
    • 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
    • G01B3/10—Measuring tapes
    • G01B3/1005—Means for controlling winding or unwinding of tapes
    • G01B3/1007—Means for locking
    • G01B2003/1015—Means for locking engaging the tape in a direction transversal to the tape itself
    • 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
    • G01B3/10—Measuring tapes
    • G01B3/1005—Means for controlling winding or unwinding of tapes
    • G01B2003/1033—Means for activating the locking, braking or releasing of the tape, e.g. buttons
    • G01B2003/1038—Means for activating the locking, braking or releasing of the tape, e.g. buttons by translatory motion operation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tape Measures (AREA)
  • Braking Arrangements (AREA)

Abstract

A buffer body 2 is installed within the casing 11 and near the outlet of the measuring tape 13. The buffer body 2 is made of a material which has a larger friction index. When the braking button 12 is pressed, the pressing end 121 engages the top surface of the measuring tape 13 and the buffer body 2 will clamp the measuring tape. Thereby, as the measuring tape is braked, a larger friction force is obtained so as to fix the pulled measuring tape for measuring an object.

Description

AN IMPROVED BRAKING DEVICE OF A MEASURING TAPE BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved braking device of a measuring tape, and especially to an improved braking device, wherein the measuring tape can be fixed with a small force.
2. Description of the Prior Art As shown in Fig. 1,2A and 2B, a prior art measuring tape structure is disclosed.
The measuring tape includes a casing 11, a braking button 12, a measuring tape 13, an elastic strip 14, a winding wheel 15, and other components. With reference to Fig.
1A, the bottom pressing end 121 of the braking button 12 is separated with the measuring tape 13 so that the measuring tape 13 can be pulled or rewound freely. As shown in Fig. 2, when the user push the braking button 12 toward the sliding groove of the casing, the bottom pressing end 121 of the braking button 12 will tightly resist a, ainst the top surface of the measuring tape 13 so that the bottom of the measuring tape 13 contacts with part of the casing 11A,... However, since the casing 11 and the braking button 12 of the measuring tape are made by hard material. The friction forces between the bottom pressing end 121 of the braking button 12 and the top surface of the measuring tape 13, the bottom of the measuring tape 13 and the part casing 11A,... are small. Thus, they can not tightly engaged. Since an elastic strip 14 often applies a force to the measuring tape 13, thus when the measuring tape 13 is braked, a restoring force still applies to the measuring tape so that it is difficult to be fixed.
Moreover, since the casing 11 is made of materials without elasticity and only installed with one opening for receiving the measuring tape 13, the material on the rim portion of the casing also has no elasticity. When the measuring tape 13 is rewind backwards, the piece 131 in front of the measuring tape will be strongly impacted by the restoring force of the elastic strip 14. Thus, the user will not steadily hold the measuring tape. Moreover, he (or she) is possible hurt.
SUMMARY OF THE INVENTION Accordingly, the object of the present invention is to provide an improved braking device of a measuring tape. In this braking device of measuring tape, an elastic buffer body is matched with a braking button so as to attain the braking action of clamping a measuring tape. Thus, the measuring tape can be fixed without tightly pressing the measuring tape and the protection of the measuring tape is increased. In the improvement of the braking device of the present invention, a buffer body is installed the outlet of the measuring tape within the casing. Thus, the dynamic force thereof is absorbed by the buffer body and the rewinding speed is reduced so as not to impact the hand of the user.
The present invention will be better understood and its numerous objects and avantages will become apparent to those skilled in the art by referencing to the following drainas in which : BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is the schematic view of a pivotal axis measuring tape.
Fig. 2A is a cross sectional view of a prior art measuring tape structure.
Fig. 2B is a cross sectional view after a prior art measuring tape has acted.
Fig. 3A is a cross sectional view showing that the measuring tape of the present invention has not been braked.
Fig. 3B is a cross sectional view showing that the measuring tape of the present invention has been braked.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in Fig. 3, the measuring tape structure of the present invention is disclosed. The measuring tape of the present invention includes a casing 11, a braking button 12, a measuring tape 13, an elastic strip 14, a winding wheel 15, and other components. The casing 11 is formed by screwing a left and a right housing.
One of the housings has an elastic strip fixing shaft 21 on the center thereof. The measuring tape 13 winds the elastic strip 14. The braking button 12 can be pushed in a sliding groove 25 so that the pressing end 121 on the bottom thereof can press the measuring tape 13 or separated with the measuring tape so as to brake or release the measuring tape 13. Controlling the telescoping action of the measuring tape 13 by elastic strip 14 is well known in the prior art, thus the detail will not be further described herein. The following description only describes the improvement of the braking structure.
As shown in Figs. 3A and 3B, a buffer body 2 is located within the inner surface of the casing 11 near the outlet 111 for telescoping the measuring tape 13. The buffer body is made by elastic materials, integrally formed with the casing 2 and adhered to the casing 11. The buffer body is in a position so that when the braking button 12 is pushed downwards, the bottom pressing end 121 of the braking button 12 and the buffer body 2 will clamp the measuring tape 13, as shown in Fig. 3B.
Referring now to Fig. 3A, when the present invention has not been operated, the braking button 12 is on the upper portion of the sliding groove 16 of the casing 11. The pressing end 121 of the bottom thereof does not contact with the measuring tape 13, thus the measuring tape may be pulled freely. When the measuring tape 13 is pulled to a predetermined position so that it is required to be fixed, as shown in Fi. 3B, the control button needs to be pushed downwards. After the control key 12 move downwards, the pressing end 12 will eject the top end of the measuring tape 13 and to clamp the measuring tape 13 with the buffer body 2. Since the buffer body 2 is formed by rubber and other elastic material. As a result, the friction of the measuring tape 13 is increased greatly. Therefore, the measuring tape. 13 is fixed effectively.
Referring now to Fig. 3A, when the control key 12 pushed upwards, the measuring tape 13 is rewound. When the measuring tape is rewound by the action of the elastic strip 3 so that buffer body 2 within the inner surface of the casing 11 is also rewound, the buffer body 2 will rub the measuring tape 13. Therefore, the rewinding speed of the casing 13 can be reduced.
It will be appreciated that by the improved braking device of a measuring tape according to the present invention, the measuring tape may be fixed without strongly pressing the measuring tape. The rewinding speed of the measuring tape is reduced, and the holding sense of the user is thus not effected.
Although the present invention has been described using specified embodiment, the examples are meant to be illustrative and not restrictive. It is clear that many other variations would be possible without departing from the basic approach, demonstrated in the present invention.

Claims (4)

  1. What is Claimed is: 1. An improved braking device of a measuring tape, wherein the measuring tape primarily comprises a casing, an elastic strip, and a braking button, the casing is installed with a sliding groove and an output of the measuring tape, an elastic strip fixing shaft is installed on the center of the casing, the measuring tape is wound around the elastic strip, characterized in that: a buffer body is installed within the casing and near the outlet of the measuring tape, when the braking device is pressed, the pressing end on the top surface of the measuring tape and the buffer body will clamp the measuring tape.
  2. 2. The improved braking device of a measuring tape as claimed in claim 1, wherein the buffer body is made of rubber and other elastic materials.
  3. 3. The improved braking device of a measuring tape as claimed in claim 1 or 2, wherein the buffer body is adhered to the casing.
  4. 4. The improved braking device of a measuring tape as claimed in claim 1 or 2, wherein the buffer body is formed integrally with the casing.
GB9906506A 1999-03-23 1999-03-23 Braking device of a measuring tape Withdrawn GB2348184A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9906506A GB2348184A (en) 1999-03-23 1999-03-23 Braking device of a measuring tape
FR9904601A FR2792401B3 (en) 1999-03-23 1999-04-13 TAPE A BRAKE MECHANISM
DE29911539U DE29911539U1 (en) 1999-03-23 1999-06-29 Improved braking device of a measuring tape

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9906506A GB2348184A (en) 1999-03-23 1999-03-23 Braking device of a measuring tape
FR9904601A FR2792401B3 (en) 1999-03-23 1999-04-13 TAPE A BRAKE MECHANISM
DE29911539U DE29911539U1 (en) 1999-03-23 1999-06-29 Improved braking device of a measuring tape

Publications (2)

Publication Number Publication Date
GB9906506D0 GB9906506D0 (en) 1999-05-12
GB2348184A true GB2348184A (en) 2000-09-27

Family

ID=27220262

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9906506A Withdrawn GB2348184A (en) 1999-03-23 1999-03-23 Braking device of a measuring tape

Country Status (3)

Country Link
DE (1) DE29911539U1 (en)
FR (1) FR2792401B3 (en)
GB (1) GB2348184A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1435474A (en) * 1974-02-22 1976-05-12 Stanley Works Coilable rule
GB2034424A (en) * 1978-11-14 1980-06-04 Fisco Products Ltd Brake for elongate member
GB2131549A (en) * 1982-12-07 1984-06-20 Stanley Works Power returnable coilable rules
US4663854A (en) * 1984-06-20 1987-05-12 Randy Miller Tape measure with lock button
GB2229533A (en) * 1989-03-20 1990-09-26 Korea Measures Co Ltd Portable measuring tape
GB2244334A (en) * 1990-05-23 1991-11-27 Chen Wen Ping Height gauge
EP0531570A1 (en) * 1991-09-12 1993-03-17 SICFO-STANLEY Société industrielle et commerciale française des outils STANLEY Tape-measure with braking device
EP0823614A2 (en) * 1996-08-08 1998-02-11 Cooper Industries, Inc. Slide lock for retractable tape measure

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1435474A (en) * 1974-02-22 1976-05-12 Stanley Works Coilable rule
GB2034424A (en) * 1978-11-14 1980-06-04 Fisco Products Ltd Brake for elongate member
GB2131549A (en) * 1982-12-07 1984-06-20 Stanley Works Power returnable coilable rules
US4663854A (en) * 1984-06-20 1987-05-12 Randy Miller Tape measure with lock button
GB2229533A (en) * 1989-03-20 1990-09-26 Korea Measures Co Ltd Portable measuring tape
GB2244334A (en) * 1990-05-23 1991-11-27 Chen Wen Ping Height gauge
EP0531570A1 (en) * 1991-09-12 1993-03-17 SICFO-STANLEY Société industrielle et commerciale française des outils STANLEY Tape-measure with braking device
EP0823614A2 (en) * 1996-08-08 1998-02-11 Cooper Industries, Inc. Slide lock for retractable tape measure

Also Published As

Publication number Publication date
FR2792401A3 (en) 2000-10-20
GB9906506D0 (en) 1999-05-12
FR2792401B3 (en) 2001-03-23
DE29911539U1 (en) 1999-12-09

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)