JP4630554B2 - Tape measure with power generation function - Google Patents

Description

The present invention relates to a tape measure having a power generation function.

Nowadays, many of the tape measures are widely used as an automatic winding type that automatically winds a measuring tape, and it is an urging means for winding the tape around the winding drum and winding the tape. The rotating drum is provided with a coil spring, and a case for storing the rotating drum.
Usually, since the tape is stored in the case, when measuring, pull the locking piece provided at the tip of the tape that locks to the tape inlet / outlet of the case with your finger, and then properly pull out the tape pulled out. The desired measurement is carried out.

When the tape is stored in the case after the measurement is completed, the tape is released by a coil spring built in the rotary drum in the case by releasing the tape braking device or the tape stopped by the hand. The tape is automatically wound up in the case, and the tape winding is completed when the locking piece at the tip of the tape is locked at the tape inlet / outlet. The tape doorway is provided with an impact buffering member that relaxes and absorbs the collision energy of the locking pieces that collide with the tape doorway at a considerable speed.
That is, in the measurement using the tape measure, the rotating drum is rotating when the tape is pulled out from the case or when the tape is wound in the case.

For this reason, the present applicant uses the rotation of the rotating drum, or manually generates power using a power generator that can be incorporated in the case, and supplies power to external equipment used during measurement work. , To provide a tape measure with a power generation function that can be used as driving power when an optional device such as a lighting device that illuminates the tape or surroundings, a storage device that stores measurement values, and a calculator is provided on the case To do.

The gist of the present invention is that in the case, in the tape measure, which is rotatably equipped with a rotating drum that winds the tape around, and has a biasing means that biases the tape in the winding direction in the rotating drum, A power generation device comprising at least a magnet and a coil is provided in the case, the magnet is provided in the rotating drum, and the coil is provided in the case, and the magnet rotates with the rotation of the rotating drum, It is a tape measure provided with the power generation function characterized by being able to supply the electric power generated in the coil to the outside.

In addition, in the tape measure, which is rotatably provided with a rotating drum for winding the tape around the case, and provided with a biasing means for biasing the tape in the winding direction, the power generation comprising at least a magnet and a coil the device is provided, the magnet is provided on the rotary drum, also the case, the circumferential wall of the orbiting shape having a portion of the rear wall and the bottom wall and at least the front wall, to engage the left side in the width direction of the circumferential wall Consists of a left side wall and a right side wall that engages the right side of the circumferential wall in the width direction, and the coil is provided on the circumferential wall, and the magnet of the power generator is manually rotated, and the rotation generates the coil. It is a tape measure provided with the power generation function characterized by being able to supply the generated electric power outside.

The tape measure having the power generation function of the present invention will be described in detail. The tape measure is a tape measure that can generate electric power by using rotation of a rotating drum or by a manual power generation device incorporated in a case.
A case is a member that accommodates a measuring tape that is usually a combination of left and right half cases, and is also the main body of a tape measure. The case is made of a resin material or a metal material. A shaft is erected on the side wall of the case, and a rotating drum around which a measuring tape with a scale printed is wound around the shaft. ing.
Further, the case is engaged with a circumferential wall having at least a front wall, a rear wall, and a bottom wall, a left wall that engages the left side in the width direction of the circumferential wall, and a right side in the width direction of the circumferential wall. to make up from the right side wall. The entrance / exit of the tape may be provided on the circumferential wall, or may be provided on the circumferential wall and the left side wall and / or the right side wall.

The rotating drum is housed in the case so as to be rotatable by means such as a shaft support, and a winding drum portion for winding the tape in a laminated form is formed on the outer periphery thereof, and the end portion of the winding drum Side walls for preventing lateral displacement of the tape wound around the winding drum are provided in the outward direction, that is, in the centrifugal direction of the rotating drum.
In addition, a space is provided inside the rotary drum, and a coiled spring for winding the tape is accommodated therein. One end of the spring is engaged with the rotary drum and connected to the tape, and the other end is engaged with a shaft standing in the case. This coiled spring stores the force to wind the tape when the spring is wound around the shaft by pulling out the tape, and when the pulled tape is released, it is rotated by restoring the spring wound around the shaft. The drum rotates in reverse and takes up the tape. According to JIS, such an automatic winding type tape measure is called a convex rule.

On one side of the space, a side wall is usually formed inward from the end of the winding drum, and a shaft through hole is formed at the center of the side wall. The opposite side is left open or an appropriate lid is provided.
Then, by pulling out the tape, the spring is wound around the shaft, whereby the winding force is accumulated. Further, when winding the tape, the wound spring returns, that is, spreads in the centrifugal direction around the shaft, thereby rotating the rotating drum and winding the tape around the winding drum in a laminated manner. The tape is formed from a steel material such as iron or stainless steel or a fiber. The coiled spring is formed from a steel material such as iron or stainless steel.

The tape enters and exits from the tape inlet / outlet provided below the case, and when the winding of the tape is finished, the locking piece at the tip of the tape is locked to the tape inlet / outlet, thereby the tape case. Pulling in is prevented.
In general, an impact buffering member that relaxes (including an absorbing function) the collision energy of the locking piece is provided at the tape doorway.
In addition, there are some provided with a lock mechanism for stopping (fixing) the drawn tape at an arbitrary position and a brake mechanism for controlling the tape winding speed.

The wall provided with the tape entrance is the front wall of the case, and the front wall rises upward from the tape entrance and reaches the top of the case. The wall falling from the top is the rear wall of the case, and the wall connecting the lower part of the rear wall and the lower part of the front wall is the bottom wall of the case. And the site | part which the front wall, the rear wall, and the bottom wall continued is a surrounding wall.
The wall connecting the same side of the front wall, the rear wall, and the bottom wall is the side wall of the case. Furthermore, some cases have a substantially horizontal top wall connecting the upper part of the front wall and the upper part of the rear wall. In that case, the part where the front wall, the top wall, the rear wall, and the bottom wall are continuous is the circumferential wall.

The power generator is preferably composed of a magnet and a coil having an arbitrary shape, and must be disposed so that the coil can pass through the magnetic field generated by the magnet. Specifically, the magnet may be arranged on the rotating drum and moved by rotating the rotating drum .
Alternatively, without using the rotation of the rotating drum, a magnet may be arranged on a manual rotating body incorporated in the case and moved together with the rotation of the rotating body.

When power generation uses the rotation of a rotating drum, a magnet is provided on the rotating drum and a coil is provided on the case. The coil may be provided directly on the case, or may be provided indirectly on the case with an appropriate member interposed.

  And the arrangement | positioning site | part to the rotating drum of a magnet is not specifically limited, What is necessary is just to arrange | position to a suitable site | part. Specifically, it is preferable that a plurality of the drums are provided on the side surface of the rotary drum and are arranged continuously in the rotation direction of the rotary drum. The side surface of the rotating drum accommodates a side wall for preventing lateral displacement of the tape formed outward from the end of the winding drum, that is, in the centrifugal direction of the rotating drum, and a coiled spring for winding the tape. It is a side wall formed on one side of the space being opened, and a lid provided on the opening on the opposite side of the space.

The magnet may be provided at or near the end of the side surface of the rotating drum. That is, it is the outermost end of the side wall for preventing lateral displacement of the tape formed outward from the end of the winding drum, that is, in the centrifugal direction of the rotating drum.
The magnet may be disposed on the side wall of the rotating drum with the outwardly facing surface of the flat magnet facing the side wall of the case. Of course, the magnet may be flush with or protrude from the side wall of the rotating drum. Moreover, you may provide in the both sides | surfaces of a rotating drum.

The part where the coil is provided in the case may be located anywhere as long as the relation between the coil and the magnetic field of the magnet is suitable. Specifically, the side surface of the case, that is, the side wall may be used, and a loop-shaped coil may be provided over almost the entire side surface. Furthermore, you may provide a coil in the both sides | surfaces of a case.
The form of the coil is not particularly limited, but a flat shape is excellent in arrangement. And although only one coil may be sufficient, you may provide multiple. A plurality of loops of one coil may be formed, but this form is the same as a form in which a plurality of coils are provided and the coils are continuously connected. And it is good to connect a coil or a loop in the rotation direction of a rotating drum.

In addition, the coil may be provided on the circumferential wall of the case, and in this case, the shape of the coil loop may be any shape as long as the relationship between the coil and the magnetic field of the magnet is suitable. Specifically, a coil may be provided over almost the entire area of the circumferential wall.
The form of the coil is not particularly limited, but a flat shape is excellent in arrangement. And although only one coil may be sufficient, you may provide multiple. A plurality of loops of one coil may be formed, but this form is the same as a form in which a plurality of coils are provided and the coils are continuously connected. And it is good to connect a coil or a loop in the direction where the rotating drum of a surrounding wall rotates.

When power generation is performed by manually driving the power generation apparatus incorporated in the case without using the rotation of the rotating drum, the magnet is manually rotated by an appropriate means, and the coil is provided in the case.
When rotating the magnet, for example, it is preferable to provide a plurality of plate bodies that can be rotated from the outside of the case, and to connect them in the rotation direction of the plate. The coil may be provided directly on the case, or may be provided indirectly on the case with an appropriate member interposed.
The magnets may be arranged on the plate body in the same manner as the state provided on the rotating drum described above, and the coils may be arranged in the same manner as described above.

The material for the magnet and coil is not particularly limited, and may be formed from a suitable material. The magnet may be formed from a rare earth material.
The structure for supplying the power generated in the coil to the outside, the connecting member for supply, etc. are not particularly limited, and specifically, a terminal member, a connector member, etc. may be arranged at an appropriate part of the case. . In addition, it is desirable to provide a protective member such as an appropriate cap on the terminal or connector in order to prevent dust from entering or short-circuiting when not in use.

The magnet and / or coil may be embedded in a member in which they are installed. The coil may be formed in a cylindrical shape or a flat loop shape. Furthermore, the coil may be provided with a wire directly on a member such as a case, or may be printed on a film and the film provided on a member such as a case. The coil may be provided by insert molding.
An arbitrary device that is driven by the power generated in the coil may be provided in the case, such as a tape, a light emitter for illuminating the surroundings, a storage device for storing measurement values, a computer, and the like. Moreover, you may provide the arbitrary electrical storage means for storing the electric power which generate | occur | produced in the coil.

  Therefore, since the tape measure having the power generation function of the present invention is configured as described above, the one that performs power generation by rotating the rotating drum is a magnet by rotating the rotating drum when the tape is pulled out or taken up. As the coil rotates, the coil disposed in the case cuts off the magnetic field of the magnet. As a result, electromagnetic induction occurs and electric power is generated at both ends of the coil.

In addition, in the case of manually driving the power generation apparatus incorporated in the case, the coil disposed in the case cuts off the magnetic field of the magnet by manually rotating the plate body on which the magnet is disposed. As a result, electromagnetic induction occurs and electric power is generated at both ends of the coil.

Since the tape measure provided with the power generation function of the present invention is configured as described above, the tape measure can be used as a generator, and power can be supplied to an external device used during measurement work. In addition, when the tape measure case is equipped with a lighting device for illuminating the tape, surroundings, a storage device for storing measurement values, and a computer, etc., it should also be used as power for driving these devices. Can do.

  A tape measure having a power generation function of the present invention will be described below with reference to the drawings. The magnets and coils in each figure are shown in a transparent state (solid line) for easy viewing. These installation forms are installed on the surface of the member or in a state of being embedded in the member.

  FIG. 1 is an exploded perspective view, partly cut away, of a tape measure having a power generation function according to the present invention. Reference numeral 1 denotes a tape measure case, and the case shown in FIG. 1 is a combination of left and right half cases. 2a is a side wall of the case 1, 2b is a front wall of the case 1, 2c is a rear wall of the case 1, and 2d is a bottom wall of the case 1. Reference numeral 6 denotes a tape inlet / outlet through which the tape 11 wound around the rotary drum 8 enters and exits, 7 denotes a shaft that supports the rotary drum 8, and 7 a denotes a bearing that supports the tip of the shaft 7. 8 is a rotating drum, 8a is a winding drum for winding the tape in a laminated form, 8b is a winding drum side wall for preventing lateral displacement of the wound tape, and 8d is a coil spring 12 for winding the tape 11. Side wall 8e is a through hole through which shaft 7 passes, 9 is a magnet provided on the side wall of rotating drum 8 and winding drum side wall 8b, and 10 is on side wall 2a on one side of case 1. The provided flat loop coil 15 is a terminal for supplying electric power generated in the coil to the outside. Although not shown in the figure, the generated power can be stored by providing an appropriate power storage device between the coil 10 and the terminal 15.

  FIG. 2 is a perspective view of the rotating drum. In this figure, a large number of magnets 9 are connected in the rotating direction of the rotating drum 8. 8 is a rotating drum, 8a is a winding drum for winding the tape in a laminated form, 8b is a winding drum side wall for preventing lateral displacement of the wound tape, and 8d is a coil spring 12 for winding the tape 11. A side wall 8e positioned on the side of the spring accommodating portion is a through hole through which the shaft 7 passes.

  FIG. 3 is a perspective view of the rotating drum. In this figure, a large number of magnets 9 are connected in the rotating direction of the rotating drum 8, and the end of the magnet 9 is provided on the peripheral edge of the rotating drum 8. It is a thing. 8 is a rotating drum, 8a is a winding drum for winding the tape in a laminated form, 8b is a winding drum side wall for preventing lateral displacement of the wound tape, and 8d is a coil spring 12 for winding the tape 11. A side wall 8e positioned on the side of the spring accommodating portion is a through hole through which the shaft 7 passes.

  FIG. 4 is a side view of the half case. In this figure, a flat loop-shaped coil 10 is provided on the side wall 2a on one side of the case 1 and connected in the direction in which the rotary drum rotates. 7 is a shaft on which the rotating drum 8 is supported, 15 is a terminal for supplying power generated in the coil to the outside, and 16 is a cover for protecting the terminal 15 when not in use.

  FIG. 5 is a perspective view of the half case. In this figure, a flat loop coil 10 is provided on the peripheral wall 2 of the case 1. Reference numeral 2a denotes a side wall of the case 1, 6 denotes a tape inlet / outlet through which the tape 11 enters and exits, 7 denotes a shaft on which the rotary drum 8 is supported, and 15 denotes a terminal for supplying electric power generated in the coil to the outside.

  FIG. 6 is an exploded perspective view of a three-piece case. In this figure, a flat loop-shaped coil 10 is engaged with a central circumferential wall 2e having a central circumferential shape and the left side of the central circumferential wall 2e. It is provided on the central peripheral wall 2e of the case composed of the left side wall 2f and the right side wall 2g engaged with the right side. Further, the coil 10 is connected in the direction in which the rotary drum rotates. Reference numeral 6 denotes a tape inlet / outlet through which the tape 11 enters and exits, 7 denotes a shaft on which the rotating drum 8 is supported, and 15 denotes a terminal for supplying electric power generated in the coil to the outside.

  FIG. 7 is a plan view of the coil formed on the film. This figure is installed on the side wall 2 a of the case 1. 10 is a coil formed on the film 10a, 10a is a film, and 10b is a through hole through which the shaft 7 passes.

  FIG. 8 is an exploded perspective view of a tape measure having another form of power generation function. In this figure, a plate 13 provided with a magnet 9 is rotatably provided outside the side wall 2a of the case 1 provided with the coil 10. The power is generated by manually rotating the plate 13. Reference numeral 1 denotes a tape measure case, and the case shown in the figure is a combination of left and right half cases. Reference numeral 2a denotes a side wall of the case 1, 6 denotes a tape inlet / outlet through which a tape 11 wound around the rotary drum 8 enters and exits, and the rotary drum 8 is supported by a shaft 7 (not visible in the figure). 7 a is a bearing that supports the tip of the shaft 7. 8 is a rotating drum, 8a is a winding drum for winding the tape in a laminated form, 8b is a winding drum side wall for preventing lateral deviation of the wound tape, and 8d is a coil spring 12 for winding the tape 11. A side wall located on the side of the spring accommodating portion, 8e is a through hole through which the shaft 7 passes, 9 is a magnet, 10 is a flat loop coil provided on the side wall 2a on one side of the case 1, and 13 is a plate. It is supported by the shaft 13b. Reference numeral 13 a denotes a retaining plate 13, and reference numeral 14 denotes a handle for rotating the plate 13. The generated electric power is guided to an external supply terminal 15 (not visible in the figure). Although not shown in the figure, the generated power can be stored by providing an appropriate power storage device between the coil 10 and the terminal 15.

  FIG. 9 is a side view of the tape measure with the half case removed, wherein 1 is the case, 6 is the tape inlet / outlet for the tape 11 wound around the rotary drum 8, and 6a is the collision energy of the locking piece 11a of the tape 11. Shock absorber for relieving vibration, 8 is a rotating drum supported by the shaft 7, 8a is a winding drum for winding the tape in a laminated form, 8b is a winding drum side wall for preventing lateral deviation of the wound tape. , 8c is a spring accommodating portion which is an accommodating space for the coil spring 12 for winding the tape 11, 15 is a terminal for supplying electric power generated in the coil to the outside, and 16 is a cover for protecting the terminal 15 when not in use.

FIG. 10 is a diagram illustrating an example of a tape measure provided with a lighting device, where the left diagram is a side view of the tape measure, and the right diagram is a front view of the tape measure. Reference numeral 17 denotes a light emitter for illumination, and 18 denotes a switch.
FIG. 11 is a diagram illustrating an example of a tape measure provided with a storage device, in which 19 is a display and 20 is a numeric keypad.
FIG. 12 is a diagram showing an example of a tape measure provided with a calculator, wherein 19 is a display and 20 is a numeric keypad.

Partially cut away exploded perspective view of a tape measure having a power generation function of the present invention Perspective view of rotating drum Perspective view of rotating drum Side view of half case Perspective view of half case Exploded perspective view of case in 3 piece form Plan view of coil formed on film An exploded perspective view of a tape measure having another form of power generation function Side view of tape measure with half case removed The figure which shows an example of the tape measure which provided the illuminating device The figure which shows an example of the tape measure which provided the memory | storage device The figure which shows an example of the tape measure which provided the computer

Explanation of symbols

1-case, 2-circumferential wall, 2a-side wall, 2b-front wall, 2c-rear wall, 2d-bottom wall, 2e-center circumferential wall, 2f-left side wall, 2g-right side wall, 6-tape doorway, 6a -Shock absorber, 7-shaft, 7a-bearing, 8-rotating drum, 8a-winding drum, 8b-winding drum side wall, 8c-spring accommodating part, 8d-side wall, 8e-through hole, 9-magnet, 10- Coil, 10a-film, 10b-through hole, 11-tape, 11a-locking piece, 12-coil spring, 13-plate, 13a-stop, 13b-shaft, 14-handle, 15-terminal, 16-cover, 17 -Light emitter, 18-switch, 19-display, 20-numeric keypad

Claims (19)

Into the case, and rotatably furnished the rotary drum for winding the tape around, the tape measure having a biasing means for biasing in a direction winding the tape, the power generating apparatus comprising a magnet and a coil provided on the rotating drum The magnet is provided on the rotating drum, and the coil is provided on the case, so that the magnet rotates with the rotation of the rotating drum, and the power generated in the coil by the rotation can be supplied to the outside. Tape measure with a power generation function characterized by 2. A tape measure having a power generation function according to claim 1 , wherein a plurality of magnets are provided on a side surface of the rotary drum, and the magnets are continuously provided in a rotation direction of the rotary drum. 3. A tape measure with a power generation function according to claim 2, wherein a magnet is provided at or near the end of the side surface of the rotating drum. 3. A tape measure with a power generation function according to claim 2 , wherein magnets are provided on both sides of the rotary drum. 2. A tape measure with a power generation function according to claim 1 , wherein a plurality of coils are provided on a side surface of the case, and the coils are connected in a direction in which the rotary drum rotates. 6. A tape measure with a power generation function according to claim 5 , wherein coils are provided on both sides of the case. 2. A tape measure with a power generation function according to claim 1 , wherein the coil is provided on a circumferential wall having at least a front wall, a rear wall, and a bottom wall of the case. 8. A tape measure having a power generation function according to claim 7, wherein a plurality of coils are provided, and the coils are continuously provided in a direction in which the rotary drum rotates. The case has a circumferentially shaped circumferential wall having at least a front wall, a rear wall, and a bottom wall, a left side wall that engages the left side of the circumferential wall in the width direction, and a right side that engages the right side of the circumferential wall in the width direction 2. A tape measure having a power generation function according to claim 1 , wherein the tape measure comprises a wall and a coil is provided on the surrounding wall. At least a magnet and a coil in a tape measure in which a rotating drum around which a tape is wound is rotatably mounted on a shaft standing in the case and provided with a biasing means for biasing the tape in the winding direction. the power generating device comprising a formed, the magnet is provided on the rotary drum, also the case, the circumferential wall of the orbiting shape having a portion of the rear wall and the bottom wall and at least the front wall, the left side in the width direction of the circumferential wall It is composed of a left side wall to be engaged and a right side wall to be engaged with the right side in the width direction of the circumferential wall, and a coil is provided on the circumferential wall . A tape measure with a power generation function characterized in that the power generated in the coil can be supplied to the outside Magnets and / or coils, tape measure that they comprise a power generating function according to claim 1 or claim 10, characterized that you have been embedded in the member to be installed 11. The tape measure having a power generation function according to claim 1 or 10, wherein the coil is in a flat loop shape. 13. A tape measure having a power generation function according to claim 12 , wherein the coil is formed in a film. The tape measure provided with the power generation function according to claim 1 or 10, wherein an arbitrary device driven by electric power generated in the coil is provided in the case. 11. A tape measure provided with a power generation function according to claim 1 or 10, wherein a light emitter that emits light by electric power generated in the coil is provided in the case. 11. A tape measure provided with a power generation function according to claim 1 or 10, wherein the case is provided with a storage device that operates by electric power generated in the coil. 11. A tape measure provided with a power generation function according to claim 1 or 10, wherein the case is provided with a calculator that operates with electric power generated in the coil. 11. A tape measure provided with a power generation function according to claim 1 or 10, wherein power storage means for storing electric power generated in the coil is provided. 11. A tape measure having a power generation function according to claim 1, wherein the magnet is made of a rare earth material.

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