JP7621113B2 - Room Dimension Measuring Device - Google Patents

Description

The present invention is a room dimension measuring device that measures the dimensions of a room and expresses the dimensions for cutting and processing by numerical control, etc., when cutting tatami mats, carpets, etc. to fit the shape of the room.
This relates to a room dimension measuring device that calculates the dimensions of a room based on polar coordinate data consisting of length data and angle data to measurement points around the room measured with a position near the center of the room as a reference point, and converts the data into data suitable for cutting and displaying it.

When laying tatami mats or carpets in a room, the stated area of the room is not necessarily the same as the actual area, so when installing, the actual dimensions of the room are measured in advance and the mats are cut and processed to fit the shape of the room based on the results.

Such a room dimension measuring device is comprised of a main body of the room dimension measuring device, a probe to be applied to the measuring point, and a portable terminal device or an infrared remote control device for operating the room dimension measuring device,
The main body includes a base, a rotating table rotatably mounted on the base,
On this rotating table are mounted a rotary encoder which detects the rotation angle of the rotating table relative to the base, a linear encoder which winds up a wire or tape and detects the length of the pulled-out wire or tape, and a laser light source which emits a laser beam in the direction of the rotating table. A probe with a sharp tip is connected to the tip of the wire of the linear encoder of the main body, and the probe is equipped with an optical sensor for receiving the laser beam from the main body,
A responder and a responder LED are provided for emitting a light beam (a modulated optical signal) towards the main body upon receiving the laser beam.
Room dimension measuring devices having the above configuration have been proposed (see, for example, Patent Documents 1 and 2 listed below).

A case where the dimensions of a room are measured using such a room dimension measuring device will be described.
The person measuring places the main body of the room dimension measuring device approximately in the center of the room and operates a mobile terminal device (or an infrared remote control) to input various conditions necessary for the measurement, such as "the standard size of tatami mats to be laid in the room (58, 36, Honma)" and "room size (number of tatami mats to be laid)."
By inputting the measurement conditions, the locations to be measured can be determined; for example, 14 locations for measurements in a 6-tatami room, or 28 locations for measurements in a small room.
Then, the measurer holds the probe in his hand, pulls it out from the main body, places it against the first measurement point, and, with the tip in contact with the first measurement point, operates the portable terminal device to start measurement.The main body of the room dimension measuring device then rotates clockwise while emitting a laser beam, and when the laser beam passes through the optical sensor provided in the probe, the response device in the probe sends a response signal (modulated optical signal) to the main body, and the calculation unit of the main body stores the linear encoder value at this time as length data at the first measurement point, and the rotary encoder value as angle data at the first measurement point.

Next, the person measures the second measurement point and, with the tip in contact with the second measurement point, operates the portable terminal device to perform the next measurement. The main body then rotates further clockwise while emitting the laser beam, and when the laser beam passes through the optical sensor provided in the probe, the response device of the probe transmits a response signal to the main body, and the calculation unit of the main body stores the value of the linear encoder at this time as the length data at the second measurement point and the value of the rotary encoder as the angle data at the second measurement point.
By repeating this procedure, if the measurement is to be made throughout a six-tatami room, the 14th measurement point is measured, and then
Return to the first measurement point and measure the first measurement point again, and the room dimension measuring device will complete the measurement.
The dimensions of the room are calculated based on polar coordinate data consisting of length data and angle data.

Patent No. 3659436 Public Relations

Patent No. 6074650 Public Relations

In recent years, tatami mats have become more versatile and are no longer only used in Japanese-style rooms, but are now also used in Western-style rooms, corridors, judo halls, bathrooms, and other places. As a result, the surfaces that a tatami mat comes into contact with are not always perpendicular to the floor, and there are also measurement points that are not perpendicular to the floor.
When the measurement point is on a vertical surface, as shown in Figure 12 (a), the tip of the probe makes line contact with the measurement point. However, when the measurement point is on an inclined surface as shown in Figure 12 (b), the tip of the probe makes point contact with the measurement point. (Figure 12 is an exaggerated drawing, and the surface is not actually inclined so much.)
The length data measured by the room dimension measuring device is the length from the center of rotation of the main body to the point where the tip is in point contact, so if a tatami mat is made with dimensions allocated based on this length data,
If the thickness of the tatami mat to be laid is greater than the height at which the tips are in point contact, the tatami mats will push against each other and be compressed when laid down.
Furthermore, if the thickness of the tatami mat to be laid is thinner than the height at which its tip makes point contact, gaps will form between the tatami mat and the baseboard or threshold when it is laid down.
In this specification, tatami mats that are larger than the actual dimensions of the room and that get compressed when laid down are referred to as "tatami mats with positive dimensional errors", and tatami mats that leave gaps between them and the baseboards or thresholds when laid down are referred to as "tatami mats with negative dimensional errors".
Both "tatami mats with positive dimensional errors" and "tatami mats with negative dimensional errors" will detract from the aesthetic appearance.

Therefore, at measurement points that are on an inclined surface, craftsmen with knowledge and experience in tatami mat manufacturing use a ruler to measure the length that would result in an error, and then make corrections with delicate care.
However, in recent years, people who have no knowledge or experience in tatami mat manufacturing are increasingly measuring room dimensions, and there is a demand for a room dimension measuring device that does not require correction.

a linear encoder for obtaining length data;
a body having a rotary encoder for obtaining angle data;
It consists of a probe with a tip that is placed on a measurement point in the room,
Place the unit in the center of the room.
Rotate the main body while the tip of the probe is in contact with the measurement point.
A room dimension measuring device that calculates the dimensions of a room as length data and angle data at a measurement point from a linear encoder value and a rotary encoder value when the main body is facing the direction of a probe,
When the measurement point is on an inclined surface, the tip is brought into point contact with the measurement point at the same height as the thickness of the tatami mat to be laid, thereby obtaining length data and angle data.

The tip portion is composed of a first tip portion and a second tip portion,
The second tip is removably mountable on the first tip;
Depending on whether the second tip is attached to the first tip or not,
The height at which the tip is brought into point contact with the measurement point is determined in stages.

By sliding the tip up and down,
The height at which the tip makes point contact with the measurement point is continuously determined.

a linear encoder for obtaining length data;
a body having a rotary encoder for obtaining angle data;
It consists of a probe with a tip that is placed on a measurement point in the room,
Place the unit in the center of the room.
Rotate the main body while the tip of the probe is in contact with the measurement point.
A room dimension measuring device that calculates the dimensions of a room as length data and angle data at a measurement point from a linear encoder value and a rotary encoder value when the main body is facing the direction of a probe,
When the measurement point is on an inclined surface, the tip is brought into point contact with the measurement point at the same height as the thickness of the tatami mat to be laid, and length data and angle data are obtained.
Tatami mats manufactured using the obtained length data will have no positive or negative dimensional errors, and can be laid out beautifully without any overlapping or gaps.

The tip portion is composed of a first tip portion and a second tip portion,
The second tip is removably mountable on the first tip;
Depending on whether the second tip is attached to the first tip or not,
The height at which the tip is brought into point contact with the measurement point is determined in stages.
All the operator has to do is decide whether to measure with the second tip attached on top of the first tip or without, based on the thickness of the tatami mat to be laid, so setting up is simple and it is easy to use.
In addition, even if the thickness of the tatami mat to be laid and the height of the tip do not match exactly, the worker only has to determine it in stages, so there is no risk of making a setting error.
Furthermore, the method of detachably mounting the second tip portion onto the first tip portion can be performed in a simple manner, and therefore the manufacturing cost is low.

By sliding the tip up and down,
The height at which the tip portion makes point contact with the measurement point is continuously determined,
Since the thickness of the tatami mat and the height of the tip can be made to match exactly, it can satisfy the needs of measurers who have very strict measurement accuracy.

FIG. 1 is a diagram for explaining the external configuration of a room dimension measuring device according to the present invention. FIG. 2 is a diagram for explaining the internal configuration of the room dimension measuring device of the present invention. FIG. 3 is a diagram for explaining the functional blocks of the room dimension measuring device of the present invention. FIG. 4 is a diagram for explaining the tip portion of the first embodiment of the room dimension measuring device of the present invention, where FIG. 4(a) is a top view, FIG. 4(b) is a side view, and FIG. 4(c) is a view from the sharp tip side. 5A and 5B are diagrams for explaining the second tip of the first embodiment of the room dimension measuring device of the present invention, in which Fig. 5A is a top view, Fig. 5B is a side view, Fig. 5C is a view seen from the sharp tip side, and Fig. 5D is a perspective view. 6A and 6B are perspective views of a probe of a room dimension measuring device according to a first embodiment of the present invention, in which FIG. 6A shows only the first tip portion, and FIG. 6B shows the first tip portion with the second tip portion attached. FIG. 7 is a diagram for explaining the effect of the room dimension measuring device of the present invention, where FIG. 7(a) shows the case where the thickness of the tatami mat laid in the room is 70 mm, and FIG. 7(b) shows the case where the thickness is 50 mm. Figure 8 is a diagram for explaining the tip portion of a second embodiment of the room dimension measuring device of the present invention, where Figure 8(a) is a top view, Figure 8(b) is a side view, and Figure 8(c) is a view from the sharp tip side. FIG. 9 is a perspective view of a probe of a room dimension measuring device according to a second embodiment of the present invention. Figure 10 is a diagram for explaining the tip portion of the third embodiment of the room dimension measuring device of the present invention, where Figure 10(a) is a top view, Figure 10(b) is a side view, and Figure 10(c) is a view from the sharp tip side. FIG. 11 is a perspective view of a probe of a room dimension measuring device according to a third embodiment of the present invention. FIG. 12 is a diagram for explaining the problems with a conventional room dimension measuring device, where FIG. 12(a) shows the case where the measurement point is on a vertical surface, and FIG. 12(b) shows the case where the measurement point is on an inclined surface.

(First embodiment)
The basic configurations of the first, second, and third embodiments of the present invention are implemented using the room dimension measuring device described in Japanese Patent No. 3,659,436 and Japanese Patent No. 6,074,650.
The external configuration of the room dimension measuring device (1) of the present invention will be described with reference to Figure 1. The room dimension measuring device (1) comprises a main body (2), a probe (3), and a portable terminal device (4), and the portable terminal device (4) can also be replaced by an infrared remote control device (not shown).

The main body case (5) of the main body (2) is provided with a display (6) that displays the operating status and measurement results of the room dimension measuring device (1), a buzzer (8) that sounds the operating status and warnings, a storage battery (12) that powers the room dimension measuring device (1), a power switch (10), a connector (11) for sending and receiving data via wired connection with a computer or the like, a spirit level (9) for checking that the main body (2) is placed horizontally on the room floor, and a main body handle (7).

The probe case (13) of the probe (3) has a sharp tip (15) for contacting the measurement point and a probe handle (14) for holding in the hand of the person measuring the dimensions of the room.

Next, the internal configuration of the room dimension measuring device (1) of the present invention will be described with reference to FIG.
In the main body (2), a rotary encoder (19) and a circular bearing (27) are provided at the center of an approximately circular rotating table (17). The rotating table (17) is attached to a base (16) so as to be freely rotatable about the axis of the rotary encoder (19). Angle data is obtained from the rotation angle of the rotary encoder (19) relative to the base (16), and length data is obtained from the length of a wire (24) drawn out of a linear encoder (18) provided above the rotating table (17).

The rotating table (17) is also provided with a motor (23), a gear (25), and a small gear (26) for rotating the rotating table (17).

The rotating table (17) is also provided with a laser light source (20) that emits a vertically elongated laser beam (21) in the direction of the rotating table (17), and a main body optical sensor (22) for receiving the beam (modulated optical signal) emitted from the response device (30) of the probe (3).

The rotating table (17) is also provided with a control board (29) for controlling the room dimension measuring device (1).

In addition, three legs (28) are provided at the bottom of the base (16).

Inside the probe (3), there are a secondary optical sensor (33) and a primary optical sensor (32) for receiving the laser beam (21) emitted from the laser light source (20) of the main body (2), and a response LED (31) and a response device (30) for transmitting a beam (modulated optical signal) to the main body (2).

In addition, a storage battery (41) for operating the response device (30) is provided inside the probe (3).

The tip (15) of the probe (3) is attached to the end of the wire (24) of the linear encoder (18) by a pin (34).

Next, the functional blocks of the room dimension measuring device (1) of the present invention will be described with reference to FIG.
The control board (29) of the main body (2) is provided with a display operation unit (6) for displaying the operating status of the room dimension measuring device (1) and the room dimension measurement results, a communication unit (37) for sending and receiving operational commands and operating status from the mobile terminal device (4) and for sending length data and angle data, a memory unit (36) for storing operating conditions, tatami mat standards, length data, angle data, etc., a length counter (39) for counting signals from the linear encoder (18), an angle counter (38) for counting signals from the rotary encoder (19), and a motor control circuit (40) for rotating the motor (23).
Also provided is a calculation unit (35) for executing a room dimension measurement operation according to a predetermined sequence and calculating the room dimensions based on polar coordinate data consisting of length data and angle data.

The probe (3) is provided with a response device (30) and a response LED (31) for transmitting a beam (modulated optical signal) to the main body (2) upon timing when the sub-optical sensor (33) and main optical sensor (32) receive the laser beam (21).

The mobile terminal device (4) is provided with a display operation unit (42) for displaying the operating status of the room dimension measuring device (1) and the room dimension measurement results, and a communication unit (44) for transmitting and receiving measurement result data and operation commands to and from the room dimension measuring device (1) and a personal computer.

The tip portion (101) of the first embodiment of the room dimension measuring device of the present invention will be described with reference to FIGS.
4(a) is a top view, FIG. 4(b) is a side view, and FIG. 4(c) is a view seen from the sharp tip side.
Figure 5 is a diagram for explaining the second tip portion of the first embodiment of the room dimension measuring device of the present invention, where Figure 5(a) is a top view, Figure 5(b) is a side view, Figure 5(c) is a view from the sharp tip side, and Figure 5(d) is a perspective view.
FIG. 6 is a perspective view of a probe of a first embodiment of a room dimension measuring device of the present invention, in which FIG. 6(a) shows only the first tip portion, and FIG. 6(b) shows the first tip portion with the second tip portion attached.

The tip portion (15) of the present invention is composed of a first tip portion (101) and a second tip portion (111),
The second tip portion (111) is provided with a pin (112) and a guide (113), and the first tip portion (101) is provided with a hole (102) for inserting the pin (112) of the second tip portion (111) and a groove (103) for slidingly inserting the guide (113) of the second tip portion (111) from above.
In a state in which the second tip portion (111) is attached to the first tip portion (101), as shown in FIG. 6(b), the first tip portion (101) and the second tip portion (111) are integrated to form one tip portion (15), the groove (103) holds the second tip portion (111) so as not to shift laterally (in the direction of rotation of the main body), and the hole (102) holds the second tip portion (111) so as not to shift forward and backward.

The second tip portion (111) is attached to the first tip portion (101) by holding the second tip portion (111) vertically in one hand and dropping it downward from above the first tip portion (101) while aligning the guide (113) with the groove (103). The pin (112) fits into the hole (102) and is held in place by the weight of the second tip portion (111) and the frictional resistance between the guide (113) and the groove (103), so that it will not come off during measurement.
When removing the second tip portion (111), the second tip portion (111) can be removed by holding it with one hand and pulling it upward.
In this manner, the tip portion of the first embodiment is structured such that the second tip portion (111) can be detachably attached to the top of the first tip portion (101) without using any tools.

In the present invention, the height from the probe bottom (3a) to the first tip apex (101a) is 50 mm, and the height of the second tip (111) ((vertical dimension) dimension L in Figure 5) is either 10 mm or 20 mm.
When only the first tip portion (101) is present, the height from the probe bottom portion (3a) to the first tip apex (101a) is 50 mm. When the second tip portion (111) with a height of 10 mm is attached to the first tip portion (101), the height from the probe bottom portion (3a) to the second tip apex (111a) is 60 mm. When the second tip portion (111) with a height of 20 mm is attached, the height from the probe bottom portion (3a) to the second tip apex (111a) is 70 mm.

The reason for this is that the most commonly produced tatami mats are 50mm thick, with the thickest being 70mm.
Also, the height of the first tip apex (101a) may be set to 30 mm so as to accommodate extremely thin tatami mats.

Next, a state in which the tip portion (15) comes into contact with a measurement point when the measurement point is on an inclined surface will be described with reference to FIG.
FIG. 7 shows only the up-down direction (height from the floor) of the position where the tip (15) makes point contact with the measurement point, and the left-right direction is determined by the position where the measurer makes contact with the tip (15).

FIG. 7(a) shows a state in which a second tip portion (111) having a height of 20 mm is attached onto a first tip portion (101) having a height of 50 mm, and the tip portion (15) is held in contact with a measurement point, and shows the attachment state of the second tip portion (111) to the first tip portion (101) when the thickness of the tatami to be laid is 70 mm.
In this state, the length of the wire (24) pulled out from the main body (2) is the length to the position where the second tip apex (111a) is in point contact with the measurement point, and so the measured length data is the length to the point where it comes into contact when a 70 mm thick tatami mat is laid out, and so a 70 mm thick tatami mat produced using this length data will be one that contains neither positive nor negative dimensional error.

FIG. 7(b) shows the state in which the tip (15) is held in contact with the measurement point with only the first tip (101) having a height of 50 mm, and shows the state in which the second tip (111) is attached to the first tip (101) when the thickness of the tatami to be laid is 50 mm.
In this state, the length of the wire (24) pulled out from the main body (2) is the length to the position where the first tip apex (101a) is in point contact with the measurement point, so the measured length data is the length to the point where it comes into contact when a tatami mat with a thickness of 50 mm is laid down.
A 50mm thick tatami mat manufactured based only on this length data will contain no positive or negative dimensional errors.

Next, a method for measuring the dimensions of a room using the room dimension measuring device (1) of the first embodiment will be described.
The person making the measurement places the main body (2) of the room dimension measuring device (1) in approximately the center of the room, and if the thickness of the tatami mats to be laid in the room or hallway where the measurement is about to be made is 60 mm, then attaches the second tip (111) with a height of 10 mm onto the first tip (101) to make the height from the bottom of the probe (3a) to the apex (111a) of the second tip 60 mm, and operates the portable terminal device (4) to input various conditions necessary for the measurement, such as "the standard size of tatami mats to be laid in the room (58, 36, honma)" and "the size of the room (number of tatami mats to be laid)".
By inputting the measurement conditions, the locations to be measured can be determined; for example, 14 locations for measurements in a 6-tatami room, or 28 locations for measurements in a small room.
The measurer then holds the probe (3) in his/her hand, pulls it out from the main body (2), places it against the first measurement point, and holds the tip (15) in contact with the first measurement point. Then, he/she operates the mobile terminal device (4) to start the measurement.

The main body (2) of the room dimension measuring device (1) rotates clockwise while emitting a laser beam (21), and when the main body (2) faces the direction of the probe (3), the response device (30) of the probe (3) transmits a response signal (modulated optical signal) toward the main body (2), (strictly speaking, the length data and angle data are transmitted at the moment when the center of the width direction of the vertical optical axis of the laser beam (21) passes through the secondary optical sensor (33) provided on the probe (3) and reaches the center of the width direction of the main optical sensor (32), so the measurer must keep the tip (15) in contact with the measurement point during this time.) The calculation unit (35) of the main body (2) stores the value of the linear encoder (18) at this time as the length data at the first measurement point, and the value of the rotary encoder (19) as the angle data at the first measurement point.

Next, the measurer moves to the second measurement point, applies the probe (3) to the second measurement point, and holds it with the tip (15) in contact with the first measurement point. Then, when the user operates the mobile terminal device (4) to execute the next measurement, the main body (2) further rotates clockwise while emitting the laser beam (21), and when the main body (2) faces the direction of the probe (3), the response device (30) of the probe (3) transmits a response signal (modulated optical signal) to the main body (2), and the calculation unit (43) of the main body (2) stores the value of the linear encoder (18) at this time as length data at the second measurement point and the value of the rotary encoder (19) as angle data at the second measurement point.
By repeating this procedure, if the measurement is to be made throughout a six-tatami room, the 14th measurement point is measured, and then
By returning to the first measurement point and measuring the first measurement point again, the room dimension measuring device (1) completes the measurement and determines the dimensions of the room based on the polar coordinate data consisting of length data and angle data.

Even in cases where a thick alcove pillar (tokobashira) protrudes beyond the side of the threshold toward the center of the room and there is a measurement point where the lower part of the alcove pillar is cut into, the height of the tip (15) is based on the thickness of the tatami mat to be laid, so the person making the measurement can insert the tip (15) into the gap in the cut part to take the measurement.

As described above, when the measurement point is on an inclined surface, the room dimension measuring device (1) of the first embodiment of the present invention measures length data by setting the position where the tip (15) makes point contact with the measurement point at the same height (same vertical position) as the point where the tatami mat will come into contact when laid out. Therefore, the tatami mats manufactured using the obtained length data will have no positive or negative dimensional errors, and can be laid out beautifully without any overlapping or gaps.

In addition, the only thing the operator needs to do with the tip portion (15) of the first embodiment is to decide, based on the thickness of the tatami mat to be laid, whether to measure with the second tip portion (111) attached on top of the first tip portion (101) or to measure with only the first tip portion (101), making it easy to set up and use.

The tip (15) of the first embodiment of the present invention is not sharp, and both the first tip (101) and the second tip (111) are shaped to have a length (height) in the vertical direction. This is because when the measurement point is on a vertical surface (as shown in Figure 12(a)), the tip is stabilized by making line contact with the vertical surface and being firmly attached to it.

In addition, what the worker does is to attach a second tip portion (111) having a height of 10 mm on top of the first tip portion (101) to form a tip portion (15) having a height of 60 mm if the thickness of the tatami mat to be laid is not exactly 60 mm,
If the thickness of the tatami mat to be laid is close to 70 mm, then a 20 mm second tip portion (111) is attached to form a tip portion (15) with a height of 70 mm. Since the determination is made in stages, it is simple and there is no risk of setting errors.

In addition, the structure of the tip portion (15) is simple, consisting of a pin (112), a guide (113), and a groove (103), allowing the second tip portion (111) to be detachably attached onto the first tip portion (101), and therefore the manufacturing cost is low.

Second Embodiment
The probe (3) and tip portion (201) of the second embodiment will be described with reference to FIGS.
In the second embodiment, the tip portion (201) slides up and down, so that the height of the tip portion (201) can be set continuously (steplessly) to the same height as the thickness of the tatami mat to be laid.
The tip (201) is attached to a sliding plate (203), which is passed through a support (202) and is structured so as to be able to slide up and down, and can be fixed at any position (height) by a screw (204).

In addition, the probe (3) of the second embodiment includes a sub-optical sensor (33), a main optical sensor (32), a response device (30), and a response LED (31), as shown in FIG. 3(b).

In addition, inside the probe (3) of the second embodiment, the probe bottom (3a) of the tip portion (201)
A photomicrosensor (205) and a slit plate (206) are provided to detect the height from the tip, and the signal output from the photomicrosensor (205) is counted by the response device (30) to calculate the height and transmit it to the main body (2) by an optical signal. The calculation unit (35) of the main body (2) displays the height of the tip (201) on the display unit (6) and also transmits it to the portable terminal device (4) and displays it on the display operation unit (42) of the portable terminal device (4) (a display unit may be provided in the probe (3) so as to display it).

In the second embodiment, the measurer places the main body (2) of the room dimension measuring device (1) in approximately the center of the room, and while watching the height of the tip (201) displayed on the display operation section (42) of the mobile terminal device (4), if the thickness of the tatami to be laid is 60 mm, slide it so that the height of the tip (201) is 60 mm, and then tighten the screws (204) to fix it in place.

The second embodiment of the room dimension measuring device (1) is configured so that the tip (201) slides up and down on the tip of the probe (3), allowing the operator to set the height of the tip to the same height as the thickness of the tatami mat to be laid.

In addition, the room dimension measuring device (1) of the second embodiment can continuously determine the height of the tip (201), so it can be precisely adjusted to a tatami mat not exactly 50 mm, or exactly 60 mm, or exactly 70 mm, but 52 mm, 63 mm, 68 mm, etc., and can satisfy the needs of measurers who have very strict measurement accuracy.

In addition, for those operators who require very precise measurements, the display operation unit (42) has a function for switching the display of the height of the tip (201) between the height from the bottom (3 a) of the probe to the top surface of the tip (201) or the height to the bottom surface.

Third Embodiment
The probe (3) and tip portion (301) of the third embodiment will be described with reference to Figs.
In the third embodiment, the height of the tip portion (301) can be continuously (steplessly) determined to be the same as the thickness of the tatami mat to be laid down by attaching the tip portion (301) at any position in the vertical direction.
The tip (301) is attached to a tip attachment part (302), and a rubber magnet (303) is attached to the tip attachment part (302). The tip (301) is fixed by magnetic force and is held in place by a guide (305) and a groove (306) so as not to slip out of place.
The tip (301) has a pointed tip apex (301a).

In addition, a ruler (304) is attached to the tip attachment part (302), so the person measuring adjusts the height of the tip (301) to the same height as the thickness of the tatami mat while looking at the scale on the ruler (304).

In addition, the probe (3) of the second embodiment includes a sub-optical sensor (33), a main optical sensor (32), a response device (30), and a response LED (31), as shown in FIG. 3(b).

In the third embodiment, the measurer places the main body (2) of the room dimension measuring device (1) in approximately the center of the room, and if the thickness of the tatami mat to be laid in the room or hallway to be measured is 60 mm, the measurer visually checks the scale on the ruler (304) and adjusts it so that the height of the tip apex (301a) is 60 mm.

Moreover, the tip portion (301) of the third embodiment has a simple structure and is inexpensive to manufacture.

1 Room dimension measuring device 2 Main body 3 Probe 3a Probe bottom 4 Portable terminal device 5 Main body case 6 Display 7 Main body handle 8 Buzzer 9 Level 10 Power switch 11 Connector 12 Storage battery 13 Probe case 14 Probe handle 15 Tip 16 Base 17 Rotating table 18 Linear encoder 19 Rotary encoder 20 Laser light source 21 Laser beam 22 Main body light sensor 23 Motor 24 Wire 25 Gear 26 Pinion 27 Bearing 28 Leg 29 Control board 30 Response device 31 Response LED
32 Main optical sensor 33 Sub optical sensor 34 Pin 35 Calculation unit 36 Memory unit 37 Communication unit 38 Angle counter 39 Length counter 40 Motor control circuit 41 Storage battery 42 Display operation unit 43 Calculation unit 44 Communication unit 45 Storage battery 101 First tip 101a First tip apex 102 Hole 103 Groove 104
111 Second tip portion 111a Second tip portion apex 112 Pin 113 Guide 201 Tip portion 201a Tip portion apex 202 Support 203 Slide plate 204 Screw 205 Photomicrosensor 206 Slit plate 301 Tip portion 301a Tip portion apex 302 Tip portion attachment portion 303 Rubber magnet 304 Ruler 305 Guide 306 Groove

Claims (3)

A dimension measuring device that is installed in the center of a room and determines the dimensions of the room while rotating,
The dimension measuring device is
a dimension measuring device body including a base, a rotary table rotatably mounted on the base, a laser light source mounted on the rotary table, a wire mounted on the rotary table, a linear encoder for obtaining length data when the wire mounted on the rotary table is pulled out, and a rotary encoder for obtaining angle data mounted on the rotary table;
a response device that transmits the light beam received from the laser light source to the dimension measuring device body as a response signal, and a probe that is coupled to the tip of the wire and has a tip portion for contacting a measurement point in a room;
the tip has a first tip and a second tip;
The second tip portion is configured to be detachable from the upper portion of the first tip portion,
A room dimension measuring device characterized in that when the tip is pulled out from the main body of the dimension measuring device and brought into contact with each measurement point in the room, the second tip at the top of the tip can be detached and attached to match the height position to be measured. The tip of the probe is configured such that a height from a probe bottom to a vertex of the first tip is 30 mm to 50 mm, and a height from a bottom of the second tip to a vertex of the second tip is 10 mm to 40 mm,
A room dimension measuring device as described in claim 1, characterized in that when the tip portion is pulled out from the dimension measuring device body and brought into contact with each measurement point in the room, the second tip portion at the upper part of the tip portion can be detached and attached to match the height position to be measured. A dimension measuring device that is installed in the center of a room and determines the dimensions of the room while rotating,
The dimension measuring device is
a dimension measuring device body including a base, a rotary table rotatably mounted on the base, a laser light source mounted on the rotary table, a wire mounted on the rotary table, a linear encoder for obtaining length data when the wire mounted on the rotary table is pulled out, and a rotary encoder for obtaining angle data mounted on the rotary table;
a response device that transmits the light beam received from the laser light source to the dimension measuring device body as a response signal, and a probe that is coupled to the tip of the wire and has a tip portion for contacting a measurement point in a room;
The apex of the tip portion is configured to be able to be determined steplessly in the up and down direction within a constant height range from the bottom of the probe,
A room dimension measuring device characterized in that, when the tip is pulled out from the dimension measuring device body and brought into contact with each measurement point in the room, the apex of the tip can be determined to match the height position to be measured and measured.

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