JPH051143U - Angle sensor - Google Patents

Abstract

(57) [Abstract] [Purpose] The tilt angle detection range can be changed easily. [Structure] A removable stopper 6 is provided which is attached to an arm 3a whose one end is rotatably attached to a fulcrum shaft 2 of a gantry 1, and has a dimension different in the direction perpendicular to the axis of the arm 3a and the arm 3a penetrates the arm 3a. Magnet 4 with a hole
a, 4b are prepared, the magnets 4a, 4b are attached and replaced by the stopper 6, and the angle range for detection is changed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention is an angle sensor that detects an angle such as an inclination.

[0002]

[Prior art]

  FIG. 3 is a front view of an angle sensor showing a conventional example. Figure of conventional angle sensor As shown in FIG. 3, the magnet 4 and the arm 3 attached to one end of the magnet 4 Of the fulcrum shaft 2 which holds the arm 3 and allows the arm 3 to rotate, and the magnet 4. By moving, the reed switch 5 that senses the fulcrum shaft 2 and the reed switch 4 It has a mount 1 for attachment.

[0003]   Here, since the arm 3 is normally oriented in the vertical direction due to the movement, When the gantry 1 tilts over a certain angle, the magnet 4 moves the reed switch 5 in the operating angle range. Once inside, the reed switch 5 operates and detects the tilt of the gantry 1. Also, the detection angle When changing the degree, the arm 3 and the magnet 4 are fixed. I adjusted it by changing the sensitivity of the switch.

[0004]

[Problems to be solved by the device]

  However, in the conventional angle sensor, the lead angle is changed to change the sensing angle range. It is not easy to change the switch angle, and it is difficult to change it significantly. It was. The purpose of the present invention is to increase the angle range for detecting the tilt in order to solve such a problem. It is to provide an angle sensor that can be changed arbitrarily.

[0005]

[Means for Solving the Problems]

  The angle sensor of the present invention has a fulcrum shaft mounted on one surface of a pedestal and a fulcrum shaft mounted on the fulcrum shaft. The end is rotatably attached and maintains its orientation vertically due to gravity. Arm and a stopper that can be attached to and detached from the other end of this arm, and this stopper. The reed switch, which is located under the topper, is attached to the frame, and the arm. A through hole is formed that penetrates the It has a plurality of magnets.

[0006]

【Example】

  Next, the present invention will be described with reference to the drawings.

[0007]   (A), (b) and (c) shows an embodiment of the present invention, in which (a) is an angle sensor Front views, (b) and (c) are partial views for explaining the operation of the angle sensor. This angle sensor is attached and attached to the lower end of the arm 3a as shown in FIG. 1 (a). It has a removable stopper 6 and a hole through which the arm 3a penetrates, and Prepare a plurality of magnets 4a, 4b having different lengths in the direction perpendicular to the axial direction, That is, the magnet 6a and the attachment are replaced by the stopper 6. So Other than that, it is the same as the conventional example.

[0008]   Next, the operation of this angle sensor will be described. First, as shown in Fig. 1 (b), Attach the magnet 4a of small size. As a result, Task 1 has the corners indicated by the arrows. Within the temperature range, the switch 5 is turned on by the magnetic field of the magnet 4. Also, the mount When 1 is tilted more than a certain angle, the rotation of the arm causes the magnet 4 to Move to inside the off area of the card switch 5, the reed switch 5 is turned off, Determine that is tilted. Next, as shown in FIG. 1C, the stopper 6 is removed, When the magnet 4b having a larger size is replaced, the ON angle range is greatly changed.

[0009]   2 (a), 2 (b) and 2 (c) show another embodiment of the present invention, in which FIG. Front view of the sensor, (b) and (c) are partial views for explaining the operation of the angle sensor. is there. This angle sensor is the same as the angle sensor in the above-mentioned embodiment with respect to the make contact. , A break contact. That is, the arms are attached to the large and small magnets 4c and 4a. A hole through which 3a penetrates is made to be parallel to the magnetic pole direction and the arm axis. This movement As shown in FIGS. 2 (b) and 2 (c), the work is performed by magnets 4c and 4a. The magnetic switch 5 is turned off by the magnetic field. The tilt of the mount within the off-angle range Reed switch 5 when the off switch 5 is turned off and the tilt exceeds the off angle range. Turns on. Also in this angle sensor, the magnet 4c and the magnet 4a are The size of the off angle range is different.

[0010]

[Effect of device]

  As explained above, the present invention has one end of the arm that changes its inclination by gravity. It has a stopper that allows the magnet to be attached and detached and a hole that allows the arm to pass through. Prepare multiple magnets with different lengths in the vertical direction, and An angle that detects tilting motion by replacing multiple magnets with the lid The effect that an angle sensor that can easily change the degree range to any force can be obtained There is.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (a) is a front view of an angle sensor, and (b) and (c) are partial views for explaining the operation of the angle sensor.

2A and 2B show another embodiment of the present invention, FIG. 2A is a front view of an angle sensor, and FIGS. 2B and 2C are partial views for explaining the operation of the angle sensor.

FIG. 3 is a front view of an angle sensor showing a conventional example.

[Explanation of symbols]

1 stand 2 fulcrum axis 3a, 3 arms 4,4a, 4b, 4c, 4d magnets 5 reed switch 6 stopper

Claims (3)

[Scope of utility model registration request] 1. A fulcrum shaft mounted on one surface of a pedestal, an arm having one end side rotatably mounted on the fulcrum shaft and maintaining its orientation in the vertical direction by gravity, and a mounting / removing unit at the other end of the arm. With possible stoppers,
Below the stopper, there are provided a reed switch attached to the gantry, and a plurality of magnets having a through hole penetrating the arm and having different vertical dimensions with respect to the through hole. A characteristic angle sensor. 2. The direction in which the length of the magnet is different is
The angle sensor according to claim 1, wherein the angle sensor is parallel to the direction of the magnetic pole of the magnet. 3. The angle sensor according to claim 1, wherein the direction in which the length of the magnet is different is perpendicular to the direction of the magnetic pole of the magnet.