JP3014697U - Tape measure with braking mechanism - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a braking mechanism for the tape measure 1 of the measuring tape 2 with good operability and durability. A drum 21 is rotatably provided inside a case 11 that is vertically divided into two parts, and is wound around the drum 21 by a winding spring 24 installed at the center of the case 11. Measuring tape 2 is case 1
1, the drum 21 is not formed from the center shaft 23 around which the measuring tape 2 is wound, and the flange portions 22 that extend in the radial direction from both ends of the center shaft 23, and the case is provided above the tape outlet 14. 11 Provided with a stop button 2 made of synthetic resin biased in a direction projecting to the outside, and forming a collar 31 capable of pressing the outer circumference of both the collar portions 22 of the drum 21 on both sides of the inner side surface of the case of the stop button 2. Then, the rotation of the drum 21 is braked by pressing the stop button 3 and pressing the outer periphery of both the collar portions 22 of the drum 21 with the collar 31 of the stop button 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a braking mechanism for a measuring tape of a tape measure.

[0002]

[Prior art]

 The conventional tape measure braking mechanism fixes the tape when the stop button is pressed. That is, even if the stop button is released, the lock mechanism is activated by pressing the stop button, and the tape is locked. To release the braking, the stop button is slid in the releasing direction, or if it is a seesaw-shaped stop button, the release side is pressed to release the lock mechanism.

[0003]

[Problems to be solved by the device]

 When applying a measuring tape to the object to be measured, pull out to an appropriate length, operate the locking mechanism to fix the tape, measure, and then move to the next measurement, the tape is locked. If the release button is operated to release, the speed of measurement cannot be maintained. In particular, such tape measure operation is performed with one hand, and the tape measure body is held in the hand with the index finger, that is, from the second finger to the little finger, and the thumb holds the upper part of the tape outlet on the front side of the body. Become. Therefore, the stop button is usually installed on the front side of the main body where the thumb touches, and the thumb operates the stop mechanism. When operating, it is difficult to move the thumb at the front position up and down. In the slide-type stop mechanism, the slide button must be slid up and down on the front, and in the seesaw-type stop mechanism, the thumb must be moved up and down to select the button pressing position. None of these have good operability.

Further, since the tape itself is pressed and fixed, there is also a problem that the tape surface is rubbed, the display on the tape surface disappears, and the tape cannot be used as a measuring tool. In this invention, while pressing the stop button, the tape is fixed and used for measurement, and when the stop button is released, the tape is unfixed and quickly rolled into the case for good operability and damage to the tape. The present invention provides a tape measure stop mechanism that is durable and has no durability, and solves the problems of the conventional tape measure.

[0005]

[Means for Solving the Problems]

 In the tape measure with a braking mechanism according to the first aspect of the invention, a drum is rotatably provided inside a case that is vertically divided into two parts, and is wound by a winding spring installed in the center of the case. In a tape measure in which the measuring tape wound on the drum is wound in a case, the drum is not provided with a center shaft around which the measuring tape is wound and a collar portion that radially extends from both ends of the center shaft. Provided with a stop button made of synthetic resin that is urged in a direction protruding to the outside of the case above the tape draw-out port, and it is possible to press the outer circumference of both flange parts of the drum on both sides of the inside surface of the case of the stop button. It is configured such that the rotation of the drum is stopped by pressing the stop button and pressing the outer circumference of both flanges of the drum with the stop button collar.

Further, in the tape measure with the braking mechanism according to the second aspect of the present invention, a bifurcated arm receiver is rotatably provided above the tape outlet in the case, and the stop button arm is inserted into the bifurcated arm receiver. By doing so, the stop button is swingably supported on the case about the rotation center of the arm receiver.

[0007]

[Action]

 According to the first aspect of the present invention, the rotation of the drum is stopped by pressing the stop button provided near the tape outlet, the measuring tape is fixed, and the pressing of the stop button is released to measure. The measurement tape can be easily pulled out by winding up the measurement tape or pulling the measurement tape against the winding spring.

[0008] Since the stop button is only pressed or released with a finger, operability can be improved. Since the stop button does not directly act on the measuring tape, it does not damage the measuring tape. In addition, since the stop button is made of synthetic resin, even if the outer circumference of both flanges of the drum is pressed, the drum will not be worn, and therefore the durability will be excellent.

According to the invention of claim 2, even if the stop button is worn or damaged during use, the arm of the stop button is removed from the arm receiver, and the arm of the new stop button is inserted and installed in the arm receiver. For example, the stop button can be easily replaced, which improves maintainability.

[0010]

【Example】

 1 is a partial cross-sectional view of a tape measure 1 of the present invention, FIG. 2 is a partial vertical cross-sectional view, and FIG. 3 is a projection view of a stop button 3. The case 11 of the measuring tape 1 has a substantially circular shape, is divided into two parts in the vertical direction, and is fixed by a central shaft 12 and fixing screws 13 provided at a plurality of peripheral positions. Inside the case 11, there is a drum 21 pivotally mounted on the central shaft 12. The drum 21 is composed of a center shaft 23 around which the measuring tape 2 is wound, and circular collar portions 22, 22 attached to both ends of the center shaft 23. One end of the measuring tape 2 is attached to the center shaft 23 of the drum 21 and is wound around the outer periphery of the center shaft 23, and the other end is pulled out from the lower side surface of the case 11 through the tape outlet 14 to the outside for measurement. Can be served. After the measurement, the winding spring 24 wound around the central hollow portion between the center shaft 23 and the central shaft 12 is automatically drawn into the drum 21 and wound up.

An L-shaped cushion 25 is provided at the other end of the tape 2 so that the L-shaped cushion 25 is hooked at the tape outlet 14 so that the tape 2 is not entirely wound in the drum 21. . A stop button 3 is attached above the tape outlet 14. That is, in the stop button 3, the stop button arm 33 is attached to the bifurcated arm receiver 16 provided above the tape outlet 14. The bifurcated arm receiver 16 is axially attached to the arm shaft 15 above the tape outlet 14 in the case 11, and is biased in the counterclockwise direction in FIG. 1 by a spring (not shown). Therefore, the stop button 3 in which the stop button arm 33 is inserted into the bifurcated arm receiver 16 is urged in the direction projecting to the outside of the case and can swing about the arm shaft 15. It is supported by the case 11.

The stop button 3 has a button portion projecting to the outside of the case 11, and both sides of the drum 21 that winds the measuring tape 2 by a braking portion 32 including collars 31 and 31 extending to both sides on the inner surface of the case 11. The outer circumferences of the collar portions 22, 22 can be attached so that they can be pressed. The stop button 3 is made of synthetic resin, and ABS resin is widely used, but DURACON (trade name), which is a kind of polyacetal resin with high hardness and toughness, is the most suitable material, and it has good feel and tenacity and elasticity. Since it does not slip, it is strong against friction and does not dent into long-term use, thus forming a durable stop member. If the stop member is composed of a metal leaf spring or the like, rust is generated and it does not feel good to the touch, and the drum 21 is worn away, so that it is not an appropriate material. The DURACON has the above-mentioned characteristics, but the material of the stop button of the present invention is not limited to this, and other materials may be used as long as they have the same function.

In the tape measure 1 provided with the stop button 3 configured as described above, by pressing the stop button 3 protruding outside the case 11, the stop button 3 swings toward the inside of the case 11 about the arm shaft 15. As a result, the braking portion 32 on the inner surface of the case 11 presses the outer periphery of the collar portion 22 of the drum 21, so that the rotation of the drum 21 can be stopped with a light force. The pulled-out tape 2 is pulled in fairly fast by the winding force of the winding spring 24, but the winding speed can be adjusted by the pressing degree of the stop button 3. Although there is a risk of cuts if touched, adjusting the wrapping speed can prevent danger and enable quick and safe measurement.

When the pressing of the stop button 3 is released, the stop button 3 returns to the direction in which it protrudes to the outside of the case 1, and the braking portion 32 separates from the flange portion 22 of the drum 21 to rotate the drum 21. release.

[0015]

[Effect of device]

 The tape measure can be operated by simply holding the tape measure in one hand and changing the pressing force without changing the pressing position of the thumb, and the tape measure can be quickly and easily operated. Also, since the stop button presses the outer circumference of the drum, it does not press the measuring tape itself, so it can withstand long-term use without damaging the measuring tape.

Since the stop button is made of synthetic resin, it does not abrade the drum even if the outer circumferences of both flanges of the drum are pressed, and thus the durability is excellent. According to the invention as set forth in claim 2, since the arm of the stop button is inserted into the arm receiver, even if the brim of the button is worn or damaged during use, the stop button must be replaced and inserted. It only needs to be put on again, and it has the effect of forming a tape measure with good maintainability.

[Brief description of drawings]

1 is a partial cross-sectional view of a tape measure of the present invention.

FIG. 2 is a partial vertical sectional view of a tape measure of the present invention.

FIG. 3 is a projection view of the stop button of the tape measure of the present invention, (a) is a front view of the stop button, (b) is a side view, (c) is a plan view, and (d) is a rear view.

[Explanation of symbols]

 1 Tape measure 11 Case 14 Tape outlet 2 Measuring tape 21 Drum 22 Collar 23 Central shaft 24 Entrainment spring 3 Stop button 16 Arm receiver 31 Collar 33 Stop button arm

Claims (2)

[Scope of utility model registration request] 1. A measuring tape in which a drum is rotatably provided inside a case which is vertically divided into two parts, and which is wound around the drum by a winding spring installed in a central portion of the case. In a tape measure adapted to be wound into a case, the drum is not provided with a center shaft around which the measuring tape is wound and a collar portion that radially extends from both side ends of the center shaft, and outside the case above the tape outlet. A stop button made of synthetic resin urged in the protruding direction is provided, and a collar that can press the outer circumferences of both the flange portions of the drum is formed on both sides of the inner side surface of the case of the stop button, and the stop button is pressed. A tape measure with a braking mechanism, characterized in that the rotation of the drum is braked by pressing the outer circumference of both flanges of the drum with the stop button collar. 2. A rotatably provided bifurcated arm receiver above the tape outlet in the case, and by inserting the stop button arm into the bifurcated arm receiver, the stop button is rotated about the center of rotation of the arm receiver. The tape measure with a braking mechanism according to claim 1, wherein the tape measure is supported by the case so as to be swingable around the.