JPH0628629U - Level Adapter for Level Sensor - Google Patents

Abstract

(57) [Abstract] [Purpose] To make it possible to easily know the height position of the laser beam even during noise. [Structure] Scale reading unit 2 that can slide along the staff 1
And the sensor mounting portion 4 to which the level sensor 3 is mounted
And an adapter fixing screw 5 for fixing the scale reading unit 2 at an arbitrary position on the staff 1, and a sensor fixing screw 14 for fixing the level sensor 3 to the sensor mounting unit 4,
An adapter-side display 13 for displaying the height position of the laser beam detected by the light receiving portion of the level sensor 3 is provided on the surface 4b of the sensor mounting portion 4 opposite to the sensor mounting surface 4a. This makes it possible to work while always looking at the display.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a staff adapter for a level sensor for fixing a level sensor used for leveling to a staff.

[0002]

[Prior art]

 As a conventional level sensor staff adapter, as shown in FIG. 4, a scale reading unit 102 slidable along the staff 1, a sensor mounting unit 104 to which the level sensor 3 is mounted, and a scale reading unit 102 are provided. Some of them are provided with an adapter fixing screw 105 for fixing at an arbitrary position on the staff 1 and a sensor fixing screw 115 for fixing the level sensor 3 to the sensor mounting portion 104.

The graduation reading unit 102 has a U-shaped cross section, a graduation reading hole 102a is provided in the graduation facing portion, and a pair of pointers 109 facing each other as a reading scale unit are provided on the inner peripheral edge of the graduation reading hole 102a. Has been. The plate-shaped sensor mounting portion 104 is formed integrally with the scale reading portion 102, and the light receiving center position 10 of the level sensor 3 and the pointer 109 of the scale reading portion 102 are aligned with the sensor mounting surface 104a of the sensor mounting portion 104. A positioning pin 113 is provided for this purpose, and a hole 124a for the sensor fixing screw is provided.

In order to perform leveling, a level sensor staff adapter to which the level sensor 3 is fixed is slid along the staff 1 so that the level sensor 3 projects the height of the laser beam B projected from the electronic level device 12. When the position is detected, the adapter fixing screw 105 is screwed in to fix the level sensor staff adapter to the staff 1. Then, the scale 8 of the staff 1 that matches the pointer 109 of the scale reading unit 102 is read.

[0005]

[Problems to be solved by the device]

 However, with the above-mentioned level sensor staff adapter, the level sensor 3 can be mounted only in the same direction as the direction of the staff scale 8, and as shown in FIG. Since the scale 8 of the staff 1 is read while standing between the staff 12 and the staff 1, the laser beam B projected from the electronic level device 12 to the level sensor 3 is often blocked, and it is impossible to avoid this. It was necessary to read the scale 8 of the staff 1 with various postures, and there was a problem that workability was poor.

Another conventional level sensor staff adapter (not shown) is one in which the level sensor 3 is attached in the direction opposite to the direction of the staff scale 8. According to this level sensor staff adapter, a laser Since there is no danger of blocking the beam B, the staff graduation 8 can be read without taking an unnatural posture.

However, as shown in FIG. 5, when leveling 1 is set up under a cliff or a cliff or near a wall for leveling work, the scale 8 of the level 1 faces the scale and the scale 8 is read. It is difficult to carry out the work, so in order to avoid this, it is necessary to proceed with the work while listening to the buzzer sound from the level sensor that indicates the height position of the laser beam B. There was a problem that it was difficult to distinguish the buzzer sound and it was difficult to know the height position of the laser beam.

The present invention has been made in view of such circumstances, and an object thereof is to provide a level sensor staff adapter capable of easily knowing the height position of a laser beam even in noise. is there.

[0009]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a level sensor staff adapter according to a first aspect of the present invention is a scale reading unit slidable along a staff, a sensor mounting portion to which a level sensor is mounted, and the scale reading unit. A level sensor staff adapter comprising: an adapter fixing means for fixing the sensor at an arbitrary position above; and a sensor fixing means for fixing the level sensor at the sensor mounting portion. An adapter-side display for displaying the height position of the laser beam detected by the light receiving portion of the level sensor is provided on the surface opposite to the mounting surface.

Further, the level sensor staff adapter according to a second aspect of the present invention is provided on the back surface of the level sensor and is connectable to a sensor side connector connected to an output side of a light receiving section of the level sensor. Then, the adapter-side connector connected to the input side of the adapter-side display is provided on the sensor mounting surface of the sensor mounting portion.

[0011]

[Action]

 As mentioned above, since the adapter side display that displays the height position of the laser beam detected by the light receiving part of the level sensor is provided on the surface opposite to the sensor mounting surface of the sensor mounting part, while always watching the display. The height position of the laser beam can be accurately known even in a noise where the user can work and the buzzer sound of the level sensor notifying the height position of the laser beam is inaudible.

If an adapter-side connector that can be connected to the sensor-side connector provided on the back surface of the level sensor is provided on the sensor mounting surface of the sensor mounting portion, the level sensor of the level sensor can be used without the connection code. The output side of the light receiving section and the input side of the adapter side display can be electrically connected.

[0013]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a staff adapter for a level sensor according to an embodiment of the present invention. This level sensor rod adapter is for fixing the scale reading unit 2 slidable along the rod 1, the sensor mounting unit 4 to which the level sensor 3 is attached, and the scale reading unit 2 at arbitrary positions on the rod 1. The adapter fixing screw 5 and the sensor fixing screw 14 for fixing the level sensor 3 to the sensor mounting portion 4 are provided.

The level sensor 3 has a built-in buzzer sound generator that emits three kinds of buzzer sounds representing the height position of the laser beam B. Further, on the surface of the level sensor 3, as shown in FIG. 2, a light receiving portion 3a for receiving the laser beam B, a display 3b for displaying the height position of the laser beam B, and switches 3c are arranged. .

A rotary shaft 6 parallel to the longitudinal axis O of the staff 1 is rotatably connected to the scale reading unit 2 via a bearing unit 7, and the sensor mounting unit 4 is fixed to the rotary shaft 6. .

The scale reading unit 2 having a U-shaped cross section is slidably fitted on the staff 1. A scale 8 is provided on the surface of the staff 1 along the longitudinal axis O, and a scale reading hole 2a is provided at the center of the scale reading unit 2 facing the scale 8. On the inner peripheral edge of the scale reading hole 2a, a pair of pointers 9 and 9 that face each other as a reading scale portion are provided. An unillustrated female screw is provided on the side surface of the scale reading unit 2, and an adapter fixing screw 5 is screwed into the female screw.

The sensor mounting portion 4 is provided with a hole (not shown) for a sensor fixing screw, and the surface 4b of the sensor mounting portion 4 opposite to the sensor mounting surface 4a displays the height position of the laser beam B on the adapter side 13. Is provided, and an unillustrated insertion plug (connector on the adapter side) that also serves as a positioning pin for the level sensor 3 is erected on the sensor mounting surface 4a of the sensor mounting portion 4. It is electrically connected to the input side of 13. On the other hand, on the back surface of the level sensor 3, a jack (not shown) for inserting the insertion plug and a female screw (not shown) for screwing the sensor fixing screw 14 are provided. The jack is electrically connected to the output side of the light receiving section 3a of the level sensor 3. When the plug is inserted into the jack on the back of the level sensor 3, the light receiving center position 10 of the level sensor 3 and the pointer 9 of the scale reading unit 2 coincide with each other, and at the same time, the light receiving unit 3a of the level sensor 3 and the display on the adapter side. 13 is electrically connected.

Next, how to use the level sensor staff adapter of this embodiment will be described.

First, the level sensor 3 is fixed to the level sensor rod adapter. To fix the level sensor 3 to the level sensor rod adapter, the back surface of the level sensor 3 is brought into contact with the sensor mounting surface 4a of the sensor mounting portion 4. At this time, the insertion plug of the sensor mounting portion 4 is inserted into the jack on the rear surface of the level sensor 3, and the female screw on the rear surface of the level sensor 3 is aligned with the hole of the sensor mounting portion 4. Then, the sensor fixing screw 14 is screwed into the female screw on the back surface of the level sensor 3 from the surface 4b opposite to the sensor mounting surface 4a. In this way, the level sensor 3 is fixed to the scale mounting portion 4 of the level sensor staff adapter in a state in which the light receiving center position 10 of the level sensor 3 and the pointer 9 of the scale reading unit 2 coincide with each other. At this time, as shown by the chain double-dashed line in FIG. 1, the sensor mounting portion 4 is rotated so that the light receiving portion 3a of the level sensor 3 faces the direction opposite to the scale display surface 1a of the staff 1.

Next, the scale reading unit 2 of the level sensor staff adapter is fitted to the staff 1.

After that, the laser beam B projected from the electronic level device 12 is received by the light receiving portion 3 a of the level sensor 3. Since the height position of the laser beam B can be known by the adapter side display 13 regardless of the noise level, the level sensor staff adapter is slid along the staff 1 according to the display. Then, when the laser beam B overlaps the light receiving center position 10 of the level sensor 3, the adapter fixing screw 5 is tightened, whereby the level sensor staff adapter is fixed to the staff 1.

Finally, the scale 8 of the staff 1 that matches the pointer 9 of the scale reading unit 2 is read.

Since the light receiving portion 3a of the level sensor 3 faces in the direction opposite to the scale display surface 1a of the staff 1, as shown in FIG. 3, the worker 11 who supports the staff 1 does not block the laser beam B and the staff 11 supports the staff. You can read it by standing in front of the scale 8.

In addition, when the leveling work is performed by setting the leveling rod 1 on the cliff or the edge of the cliff, as shown in FIG. It is rotated by ° so that the laser beam B is received. Since the operator can face the scale display surface 1a of the staff 1 on a line orthogonal to the laser beam B, and the adapter side display 13 can be seen diagonally in front of the operator facing the scale 8 of the staff 1. The height position of the laser beam B can be known even in a loud noise such that the buzzer sound is eliminated, and the staff scale 8 can be easily and safely read even under a cliff or a cliff.

As described above, the plug that is erected on the sensor mounting surface 4 a of the sensor mounting portion 4 is inserted into the jack provided on the back surface of the level sensor 3 to receive the light receiving portion 3 a of the level sensor 3 and the adapter side. Since the display 13 is electrically connected and the connection cord that hangs down for a long time is not necessary, the leveling work becomes easier.

In the above-described embodiment, the case where the sensor mounting portion 4 is simply rotatable is described, but a click stop mechanism may be adopted to hold the sensor mounting portion 4 at a predetermined rotation position. Good.

In the above-described embodiment, the case where the sensor mounting portion 4 is rotatable about an axis parallel to the longitudinal axis O of the staff 1 has been described, but instead of this, the sensor mounting portion 4 is fixed. Even if the sensor mounting surface 4a is oriented in the same direction as the scale display surface 1a of the staff, the same effect as that of the above-described embodiment can be obtained.

[0029]

[Effect of device]

 As described above, according to the level sensor staff adapter according to the first aspect, it is possible to always work while looking at the display, and even in a noise in which the alarm sound of the level sensor notifying the height position of the laser beam cannot be heard. , It is possible to know the height position of the laser beam accurately.

According to the level sensor staff adapter of the second aspect, the output side of the light receiving portion of the level sensor and the input side of the adapter side display are electrically connected without using a connection cord. The leveling work can be performed without being hindered by the connection cord.

[Brief description of drawings]

FIG. 1 is a perspective view showing a staff adapter for a level sensor according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a sensor mounting portion of the level sensor staff adapter of FIG. 1 is rotated by 180 °.

FIG. 3 is a view for explaining a method of using the level sensor staff adapter of FIG. 1.

FIG. 4 is a perspective view showing a conventional leveling rod adapter for a level sensor.

FIG. 5 is a view for explaining a method of using a conventional level sensor staff adapter.

[Explanation of symbols]

 1 Scale 2 Scale reading part 3 Level sensor 3a Light receiving part 4 Sensor mounting part 4a Sensor mounting surface 4b Opposite surface of sensor mounting surface 5 Adapter fixing screw 6 Rotating shaft 7 Bearing part 8 Scale marking 13 Adapter side display 14 Sensor fixing screw

Claims (2)

[Scope of utility model registration request] 1. A scale reading unit slidable along a staff, a sensor mounting unit to which a level sensor is mounted, an adapter fixing unit for fixing the scale reading unit at an arbitrary position on the staff, In a level sensor staff adapter having a sensor fixing means for fixing the level sensor to a sensor mounting portion, a laser beam detected by a light receiving portion of the level sensor on a surface opposite to the sensor mounting surface of the sensor mounting portion. A level sensor staff adapter which is provided with an adapter-side display for displaying the beam height position. 2. An adapter side that is connectable to a sensor side connector that is provided on the back surface of the level sensor and that is connected to the output side of the light receiving section of the level sensor, and that is connected to the input side of the adapter side display. The level sensor staff adapter according to claim 1, wherein a connector is provided on a sensor mounting surface of the sensor mounting portion.