Room Dimension Measuring Device

Abstract

To prevent cases of spoiled appearance due to tatami pushing each other or a gap generated when laid out since when the tatami is created by measured length data it would contain dimension error for the length data measured by a dimension measuring device for the room would be the length from a rotational center of a body to a point where a tip comes into a point contact by having the place where the tip abuts with the measuring point be in the point contact when the measurement point is an inclined plane.SOLUTION: Length data and angle data are obtained by having a tip 15 which is brought into a point contact with a measuring point at the same height as the thickness of the tatami to be laid out when the measuring point is on an inclined surface.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] 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. [Background technology]

[0002] When laying tatami mats or carpets in a room, the stated area of ​​the room is not always 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.

[0003] 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 response LED are provided for emitting a light beam (modulated optical signal) toward the main body when a laser beam is received. Room dimension measuring devices having the above configuration have been proposed (see, for example, Patent Documents 1 and 2 below).

[0004] 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 various measurement conditions, the locations to be measured can be determined; for example, 14 locations will be measured in a 6-tatami room, and 28 locations will be measured in a small room. Then, the measurer holds the probe in his / her 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 transmits 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.

[0005] Next, the person measures the second measurement point and, with the tip of the device 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. When the laser beam passes through the optical sensor provided in the probe, the response device of the probe sends a response signal to the main body, and the calculation unit of the main body stores the linear encoder value at this time as the length data at the second measurement point and the rotary encoder value as the angle data at the second measurement point. By repeating this procedure, if the measurement is done in a 6-tatami room, the 14th measurement point is measured, and then Return to the first measurement point and measure the first measurement point again. The room dimension measurement device completes the measurement. The dimensions of the room are calculated based on polar coordinate data consisting of length data and angle data. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 3659436 Public Relations

[0007] [Patent Document 2] Patent No. 6074650 Public Relations DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0008] In recent years, tatami mats have become more versatile and are no longer just 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.

[0009] 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. [Means for solving the problem]

[0010] 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.

[0011] The tip portion is composed of a first tip portion and a second tip portion, The second tip can be detachably attached onto 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.

[0012] By sliding the tip up and down, The height at which the tip makes point contact with the measurement point is continuously determined. Effect of the Invention

[0013] 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.

[0014] The tip portion is composed of a first tip portion and a second tip portion, The second tip can be detachably attached onto 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 it is easy to set up and 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 is a simple method, and therefore the manufacturing cost is low.

[0015] 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. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a diagram for explaining the external configuration of a room dimension measuring device of the present invention. [Diagram 2] FIG. 2 is a diagram for explaining the internal configuration of the room dimension measuring device of the present invention. [Diagram 3] FIG. 3 is a diagram for explaining the functional blocks of the room dimension measuring device of the present invention. [Figure 4] Figure 4 is a diagram for explaining the tip portion of the first embodiment of the room dimension measuring device of the present invention, where Figure 4(a) is a top view, Figure 4(b) is a side view, and Figure 4(c) is a view from the sharp tip side. [Diagram 5] Fig. 5 is a diagram for explaining the second tip portion of the first embodiment of the room dimension measuring device of the present invention, Fig. 5(a) is a top view, Fig. 5(b) is a side view, Fig. 5(c) is a view seen from the sharp tip side, and Fig. 5(d) is a perspective view. [Figure 6] Figure 6 is a perspective view of a probe of a first embodiment of a room dimension measuring device of the present invention, where Figure 6(a) shows only the first tip portion, and Figure 6(b) shows the first tip portion with the second tip portion attached. [Figure 7] 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] 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 diagram from the top, Figure 8(b) is a diagram from the side, and Figure 8(c) is a diagram viewed from the sharp tip side. [Figure 9] FIG. 9 is a perspective view of a probe of the second embodiment of the room dimension measuring device of the present invention. [Figure 10]Figure 10 is a diagram for explaining the tip portion of a third embodiment of a 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. [Figure 11] FIG. 11 is a perspective view of a probe of a room dimension measuring device according to the third embodiment of the present invention. [Figure 12] FIG. 12 is a diagram illustrating the problems with a conventional room dimension measurement 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. BEST MODE FOR CARRYING OUT THEINVENTION

[0017] (First embodiment) The basic configuration of the first, second, and third embodiments of the present invention is implemented using the room dimension measuring device described in Japanese Patent No. 3659436 and Japanese Patent No. 6074650. 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) is composed of a main body (2), a probe (3), and a portable terminal device (4), and the portable terminal device (4) can also be substituted with an infrared remote control device (not shown).

[0018] The main body case (5) of the main body (2) is provided with a display unit (6) that displays the operating status and measurement results of the room dimension measuring device (1), a buzzer (8) that outputs sound to indicate the operating status and warnings, a storage battery (12) that serves as the power source for the room dimension measuring device (1), a power switch (10), a connector (11) for sending and receiving data via cable with a personal 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).

[0019] The probe case (13) of the probe (3) is provided with a sharp tip (15) for contacting the measurement point and a probe handle (14) for holding in the hand of a person measuring the dimensions of a room.

[0020] 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 the wire (24) drawn out of the linear encoder (18) provided above the rotating table (17).

[0021] The rotating table (17) is provided with a motor (23), a gear (25), and a pinion (26) for rotating the rotating table (17).

[0022] 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 a beam (modulated optical signal) emitted from a response device (30) of the probe (3).

[0023] In addition, the rotating table (17) is provided with a control board (29) for controlling the room dimension measuring device (1).

[0024] In addition, three legs (28) are provided on the lower part of the base (16).

[0025] Inside the probe (3), there are provided a sub-optical sensor (33) and a main optical sensor (32) for receiving the laser beam (21) emitted from the laser light source (20) of the main body (2), as well as a response LED (31) and a response device (30) for transmitting a beam (modulated optical signal) to the main body (2).

[0026] Inside the probe (3) is a storage battery (41) for operating the response device (30). It is provided.

[0027] Further, the head of a wire (24) of a linear encoder (18) is attached to the tip (15) of the probe (3) by a pin (34).

[0028] 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.

[0029] 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) when the sub-optical sensor (33) and the main optical sensor (32) receive the laser beam (21).

[0030] The portable 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.

[0031] 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, 5 and 6. 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. 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.

[0032] 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 or backward.

[0033] 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). Therefore, the second tip portion (111) will not come off during measurement. To remove the second tip portion (111), the second tip portion (111) can be removed by holding it with a hand and pulling it upward. In this manner, the tip portion of the first embodiment has a structure that allows the second tip portion (111) to be detachably attached to the upper portion of the first tip portion (101) without using any tools.

[0034] 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 available in two sizes: 10 mm and 20 mm. When only the first tip portion (101) is present, the height from the probe bottom (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 (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 (3a) to the second tip apex (111a) is 70 mm.

[0035] 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 be compatible with extremely thin tatami mats.

[0036] 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).

[0037] 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, with the tip portion (15) held in contact with the 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 the measured length data is the length to the point where it will come into contact when a tatami mat with a thickness of 70 mm is laid out, and therefore a 70 mm thick tatami mat manufactured based on this length data will be a tatami mat that does not contain any positive or negative dimensional error.

[0038] FIG. 7(b) shows the state in which the tip portion (15) is held in contact with the measurement point with only the first tip portion (101) having a height of 50 mm, and shows the state in which the second tip portion (111) is attached to the first tip portion (101) when the thickness of the tatami mat to be laid is 50 mm. In this state, the length of the wire (24) drawn 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.

[0039] 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, forming a tip (15). The person making the measurement then 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)", "the size of the room (the number of tatami mats to be laid)", etc. By inputting the various measurement conditions, the locations to be measured can be determined; for example, 14 locations will be measured in a 6-tatami room, and 28 locations will be measured 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.

[0040] 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 and angle data are transmitted at the moment when the center in the width direction of the vertically elongated optical axis of the laser beam (21) passes through the secondary optical sensor (33) provided on the probe (3) and reaches the center in the width direction of the main optical sensor (32). During this time, the measurer must keep the tip (15) in contact with the measurement point.) 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.

[0041] 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) toward 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 done in a 6-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.

[0042] Furthermore, in cases such as Japanese-style rooms where a thick alcove pillar projects beyond the side of the threshold toward the center of the room and there is a measurement point where the bottom of the alcove pillar is cut into, the height of tip (15) is based on the thickness of the tatami mat to be laid, so the measurer can insert tip (15) into the gap in the cut part to take the measurement.

[0043] 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 to be at the same height (same vertical position) as the point where it will be in contact when the tatami mat is laid out. Therefore, a tatami mat manufactured using the obtained length data will be one that does not contain any positive or negative dimensional error, and will be able to be laid out beautifully without any overlapping or gaps.

[0044] Furthermore, in the first embodiment, all the operator has to do with the tip portion (15) 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), so the setting is simple and it is easy to use.

[0045] The reason why the tip portion (15) in the first embodiment of the present invention is not sharp, and both the first tip portion (101) and the second tip portion (111) are shaped to have a length (height) in the vertical direction, is that when the measurement point is on a vertical surface (as shown in FIG. 12(a)), the tip portion is stabilized by making line contact with the vertical surface and firmly abutting it.

[0046] In addition, what the worker does is to attach a second tip portion (111) with a height of 10 mm on top of the first tip portion (101) to form a tip portion (15) with a height of 60 mm, even if the thickness of the tatami mat to be laid is not exactly 60 mm, if it is close to 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 this can be determined step by step, it is simple and there is no risk of setting errors.

[0047] 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.

[0048] (Second embodiment) The probe (3) and the 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), and the sliding plate (203) is passed through a support (202) so that it can slide up and down, and can be fixed at any position (height) by a screw (204).

[0049] Inside the probe (3) of the second embodiment, there are provided 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).

[0050] 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 of the probe, 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) as 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 the height).

[0051] In the second embodiment, the person who measures 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 end (201) displayed on the display operation unit (42) of the mobile terminal device (4), if the thickness of the tatami to be laid is 60 mm, slides it so that the height of the tip end (201) is 60 mm, and tightens the screws (204) to fix it in place.

[0052] The room dimension measuring device (1) of the second embodiment is configured so that the tip (201) slides up and down at the tip of the probe (3), allowing the operator to determine the height of the tip to be the same as the thickness of the tatami mat to be laid.

[0053] Furthermore, the room dimension measuring device (1) of the second embodiment can continuously determine the height of the tip portion (201), so that it can precisely match the thickness of 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 requirements for measurement accuracy.

[0054] In addition, for users 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 (3a) of the probe to the top surface of the tip (201) or the height to the bottom surface.

[0055] (Third embodiment) The probe (3) and the 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), to which a rubber magnet (303) is attached, so that the tip (301) is fixed by magnetic force and is held in place by a guide (305) and a groove (306). The tip portion (301) has a pointed tip apex (301a).

[0056] In addition, a ruler (304) is attached to the tip attachment part (302), so the person measuring adjusts the height of the tip part (301) to the same height as the thickness of the tatami mat while looking at the scale on the ruler (304).

[0057] Inside the probe (3) of the second embodiment, there are provided 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).

[0058] 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, he or she visually checks the scale on the ruler (304) and adjusts it so that the height of the tip apex (301a) is 60 mm.

[0059] Moreover, the tip portion (301) of the third embodiment has a simple structure and is inexpensive to manufacture. [Explanation of symbols]

[0060] 1. Room Dimension Measuring Device 2 Main unit 3 transducer 3a Bottom of transducer 4. Portable terminal device 5 Main unit case 6 Display section 7 Main body handle 8 Buzzer 9 Level 10 Power Switch 11 Connectors 12 Storage battery 13 Probe case 14 Probe handle 15 Tip 16 Foundation 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 Gears 26 Pinion 27 Bearings 28 legs 29 Control Board 30 Answering Machine 31 Response LED 32 Optical sensor main 33 Optical sensor sub 34 pin 35 Arithmetic section 36 Memory section 37 Communications Department 38 Angle Counter 39 Length Counter 40 Motor control circuit 41 Storage battery 42 Display operation section 43 Arithmetic section 44 Communications Department 45 Storage battery 101 1st tip 101a First tip apex 102 holes 103 Groove 104 111 Second tip 111a Second tip apex 112 pin 113 Guide 201 Tip 201a Tip apex 202 Post 203 Sliding plate 204 Screw 205 Photomicrosensor 206 Slit Plate 301 Tip 301a Tip apex 302 Tip attachment part 303 Rubber Magnet 304 Ruler 305 Guide 306 Groove

Claims

1. 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.

2. The tip of the probe is configured such that the height from the bottom of the probe to the apex of the first tip is 30 mm to 50 mm, and the height from the bottom of the second tip to the apex 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.

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 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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