JP6812266B2 - Clamp sensor and measuring device - Google Patents

Description

The present invention relates to a clamp sensor including a main body portion, a pair of sensor portions, and a regulating member that regulates the rotation of the sensor portions.

As a clamp sensor of this type, a clamp sensor disclosed by the applicant in Patent Document 1 below is known. This clamp sensor includes a main body portion and a pair of clamp portions, and is configured to be capable of detecting an amount to be detected for the detection target in a state where each clamp portion surrounds the detection target. Further, the clamp sensor opens the tip portions of each clamp portion by rotating the clamp portion by pushing the lever (operation lever) provided at the base end portion of one clamp portion, and pushes the lever. It is configured so that the tip portions of each clamp portion can be closed by releasing. Further, in this clamp sensor, each clamp portion is maintained in a closed state by sliding the slide portion arranged on the main body portion toward the lever in a state where the tip portions of the respective clamp portions are closed. It is configured so that the operation of opening the tips of the clamp portions (the operation of pushing the lever) is allowed by sliding the slide portion in a direction away from the lever.

Design Registration No. 1552341

However, the above-mentioned clamp sensor has the following problems to be improved. Specifically, in the above-mentioned clamp sensor, by sliding the slide portion arranged on the main body portion, the tip portions of the clamp portions are maintained in a closed state (hereinafter, this state is referred to as a "locked state"). (Also known as) and the state that allows the opening operation. Therefore, in this clamp sensor, when opening the tip portions of the clamp portions in the locked state, it is necessary to perform two operations, that is, an operation of sliding the slide portion in a direction away from the lever and an operation of pushing the lever. Further, in this clamp sensor, when locking each clamp portion in which the tip portions are open, the lever is released from being pushed in to close the tip portions of each clamp portion, and the slide portion is directed toward the lever. It is necessary to perform two operations of sliding. As described above, in this clamp sensor, the operation for opening and closing the tip portions of each clamp portion is complicated, and improvement of this point is desired.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a clamp sensor and a measuring device capable of improving operability.

In order to achieve the above object, the clamp sensor according to claim 1 is arranged on the main body portion and one end side of the main body portion, and at least one of the clamp sensors is rotatably configured so as to open and close each other. A pair of sensor units that detect the amount to be detected for the detection target while surrounding the detection target, and a regulating member that regulates the rotation of the rotatable sensor unit in the direction in which the tip portions are opened from each other. A clamp sensor including a lever, wherein the rotatable sensor portion is configured to be rotatable in a direction in which each of the tip portions opens in response to movement of the lever in a direction toward the main body portion. The restricting member is slidably arranged on the main body in a direction connecting the one end side and the other end side of the main body, and abuts on the lever in a state of being located on the one end side. The lever is configured to restrict the movement of the lever in the direction toward the main body and to release the movement restriction of the lever in the direction toward the main body when the lever is located on the other end side. The release button is provided on the surface of the lever so that it can be moved in the direction toward the main body and the direction away from the main body, and the release button is the restricting member when the release button is moved toward the main body. Is slid toward the other end, and is configured to allow the restricting member to slide toward the one end when it is moved away from the main body.

The clamp sensor according to claim 2 includes, in the clamp sensor according to claim 1, a first urging member that urges the restricting member from the other end side toward the one end side, and the regulation. The member is slid toward one end by the urging force of the first urging member when the release button is moved away from the main body.

Further, the clamp sensor according to claim 3 includes, in the clamp sensor according to claim 1 or 2, a second urging member that urges the release button in a direction away from the main body portion, and the release button comprises a second urging member. In a state where no external force is applied in the direction toward the main body, the second urging member is moved in a direction away from the main body by the urging force.

Further, the measuring device according to claim 4 measures the measured amount for the detection target based on the clamp sensor according to any one of claims 1 to 3 and the detected amount detected by the clamp sensor. It is equipped with a measuring unit.

The clamp sensor according to claim 1 and the measuring device according to claim 4 are slidably arranged on the main body portion and regulate the movement of a lever toward the main body portion in a state where the lever is slidably arranged on one end side. A regulatory member that lifts the movement restriction of the lever toward the main body when it is located on the other end side of the lever, and is arranged on the surface of the lever so that it can move toward the main body and away from the main body. The restricting member is slid toward the other end when it is moved toward the main body, and the regulating member is allowed to slide toward one end when it is moved away from the main body. It has a release button. Therefore, according to this clamp sensor and the measuring device, the release button is moved (pushed) in the direction toward the main body, and then the lever is moved together with the release button in the direction toward the main body in one continuous operation. Each sensor unit in a closed state (locked state) in which the tips are closed can be brought into an open state in which the tips are open. Therefore, according to the clamp sensor and the measuring device, two independent (non-continuous) operations, that is, an operation of sliding the lock slide portion and an operation of pushing the lever, are performed in order to open each clamp portion. The operability can be sufficiently improved as compared with the conventional clamp sensor that needs to be performed and the measuring device provided with the clamp sensor.

Further, according to the clamp sensor according to claim 2 and the measuring device according to claim 4, a first urging member for urging the regulating member from the other end side to the one end side of the main body portion is provided. As a result, when the release button moves away from the main body, the restricting member can be automatically slid toward one end of the main body by the urging force of the first urging member. Therefore, according to this clamp sensor and the measuring device, the rotatable sensor unit is compared with the configuration in which the regulating member does not automatically move to the one end side (the configuration in which the regulating member is manually slid to the one end side). It is possible to further improve the operability when releasing the locked state of.

Further, according to the clamp sensor according to claim 3 and the measuring device according to claim 4, a second urging member for urging the release button in a direction away from the main body portion is provided, so that the release button is directed toward the main body portion. The release button can be automatically moved in a direction away from the main body by the urging force of the second urging member in a state where no external force is applied in the direction. Therefore, according to this clamp sensor and the measuring device, the release button does not automatically move in the direction away from the main body (the release button is manually moved in the direction away from the main body). The operability when locking the rotatable sensor unit can be further improved.

It is a block diagram which shows the structure of the measuring apparatus 1. It is a perspective view of the clamp sensor 2 in a closed state. It is a perspective view of the clamp sensor 2 in an open state. It is a side view of the clamp sensor 2 with the case 21a removed. It is 1st explanatory drawing explaining the structure of the release button 15. It is a 2nd explanatory diagram explaining the structure of the release button 15. It is sectional drawing of the release button 15. It is 1st explanatory drawing explaining the usage method of the clamp sensor 2. It is a 2nd explanatory drawing explaining the usage method of the clamp sensor 2.

Hereinafter, embodiments of the clamp sensor and the measuring device will be described with reference to the accompanying drawings.

First, the configuration of the measuring device 1 shown in FIG. 1 as an example of the measuring device will be described. The measuring device 1 is configured to be capable of measuring a current (an example of a measured quantity) flowing through an electric wire 100 (see FIG. 2) as an example of a detection target. Specifically, as shown in FIG. 1, the measuring device 1 includes a clamp sensor 2, a measuring unit 3, an operating unit 4, a display unit 5, and a control unit 6.

The clamp sensor 2 is configured to be able to detect magnetism as a detected amount generated when a current is flowing through the electric wire 100 as a detection target in a non-contact manner (metal non-contact). Specifically, as shown in FIGS. 2 to 4, the clamp sensor 2 includes a main body portion 11, a pair of sensor portions 12, 13, a regulating member 14 (see FIG. 4), and a release button 15. There is.

As shown in FIGS. 2 and 3, the main body 11 is configured to include cases 21a and 21b that are fitted to each other to form a housing, and is a grip portion (a portion to be gripped) when the clamp sensor 2 is used. Functions as. Further, sensor portions 12 and 13 are arranged on the tip end portion 11a side (corresponding to one end portion side) of the main body portion 11, and magnetic (corresponding to the other end portion side) on the rear end portion 11b side (corresponding to the other end portion side). A cable 16 for outputting the detection signal S (see FIG. 1) when the detected amount) is detected to the measuring unit 3 is connected. Further, as shown in FIG. 4, an accommodating portion 11e partitioned by a rib 11c and an outer wall 11d is formed inside the main body 11, and the accommodating portion 11e includes a regulating member 14 and a spring 41 described later. (Corresponding to the first urging member) is arranged. Note that the same figure and FIGS. 8 and 9 described later show the clamp sensor 2 with the case 21a removed.

As shown in FIGS. 2 to 4, the sensor unit 12 is a housing composed of cases 22a and 22b that are fitted to each other to form a plan-view arc-shaped (substantially semicircular) housing and cases 22a and 22b. It is configured with a sensor (not shown) housed inside the body. Further, the sensor portion 12 is arranged on the main body portion 11 in a non-rotatable state by fixing the base end portion 12b side to the tip end portion 11a side of the main body portion 11.

As shown in FIGS. 2 to 4, the sensor unit 13 includes cases 23a and 23b that are fitted to each other to form a plan-view arc-shaped (substantially semicircular) housing, and a housing composed of cases 23a and 23b. It is configured with a sensor (not shown) housed inside the body. Further, in the sensor unit 13, the base end portion 13b is supported by the rotation shaft 31, the direction of the arrow A1 in which the tip portions 12a, 13a of the sensor portions 12 and 13 open, and the tip portions 12a, 13a close to each other. The tip portion 11a of the main body portion 11 is rotatably arranged around the rotation shaft 31 in the direction of the arrow A2. Further, the sensor unit 13 is urged in the direction of arrow A2 by a torsion spring 33 (FIGS. 5 and 6). Note that FIGS. 5 and 6 show the sensor unit 13 with the case 23a removed.

Further, as shown in FIGS. 2 to 4, the base end portion 13b of the sensor portion 13 is provided with a lever 32 used for an operation of rotating the sensor portion 13 (in this example, the sensor portion 13 and the lever). 32 is integrally formed). In this case, the lever 32 is in a state in which the tips 12a and 13a of the sensors 12 and 13 are closed (see FIG. 2: hereinafter, also referred to as a “closed state”), and the tips 12a and 13a of the sensors 12 and 13. It is configured to protrude from the main body 11 in any state in which the two are open (see FIG. 3: hereinafter, also referred to as “open state”). Further, as shown in FIGS. 5 and 6, an insertion hole 32b through which the tubular body 15a of the release button 15 can be inserted is formed on the upper surface 32a (surface) of the lever 32, and the release button 15 is formed on the lower portion of the lever 32. An opening 32c through which the contact portion 15c can be inserted is formed. Further, the lever 32 has an insertion hole 32e for abutting one end of a spring 51 (corresponding to a second urging member) for urging the release button 15 and inserting the rod 15b for the release button 15. The rib 32d is formed.

In this clamp sensor 2, when the lever 32 is moved in the direction of the arrow B1 toward the main body 11 (see FIGS. 2 and 3) (pushed toward the main body 11), the sensor 13 is indicated by the arrow A1. Rotate in the direction. Further, in this clamp sensor 2, as shown in FIG. 2, an annular body 60 is formed by the sensor portions 12 and 13 in a state where the tip portions 12a and 13a of the sensor portions 12 and 13 are closed to each other, and the annular body 60 forms an annular body 60. The sensors 12 and 13 detect the detected amount (magnetism generated when a current is flowing through the electric wire 100) with respect to the electric wire 100 in a state of surrounding (clamping) the electric wire 100.

The regulating member 14 is a member that regulates the rotation of the sensor portion 13 in the direction of the arrow A1, and as shown in FIG. 4, the direction connecting the front end portion 11a side and the rear end portion 11b side of the main body portion 11 ( It is slidably arranged in the accommodating portion 11e of the main body portion 11 in the length direction of the main body portion 11: the direction of the arrow D shown in the figure). Further, the regulating member 14 is formed in a plate shape, and the cross-sectional shape of the tip portion (the end portion of the main body portion 11 on the tip end portion 11a side) is formed in an arc shape.

In this case, as shown in FIG. 4, the regulating member 14 abuts on the lower end of the lever 32 of the sensor unit 13 in a state of being located on the tip end 11a side to restrict the movement of the lever 32 in the direction of the arrow B1. (Hereinafter, the state in which the movement of the lever 32 (rotation of the sensor unit 13) is restricted is also referred to as a "locked state"), and the closed states of the sensor units 12 and 13 are maintained. Further, as shown in FIGS. 8 and 9, the restricting member 14 releases the movement restriction of the lever 32 in the direction of the arrow B1 in a state of being located on the rear end portion 11b side. Further, the regulating member 14 is directed from the rear end portion 11b side to the tip end portion 11a side by the urging force of the spring 41 arranged at the rear end portion 11b of the accommodating portion 11e (in the direction of the arrow D1 shown in FIG. 4). ) Being urged.

As shown in FIGS. 5 to 7, the release button 15 includes a tubular body 15a, a rod 15b, and a contact portion 15c. As shown in FIG. 7, the tubular body 15a is formed in a cylindrical shape with a closed top surface. One end of the rod 15b is connected to the top surface of the tubular body 15a, and the other end is connected to the contact portion 15c. The contact portion 15c is a member that comes into contact with the regulation member 14, and the contact surface 15d that contacts the tip portion of the regulation member 14 is in the length direction of the release button 15 (directions of arrows B1 and B2 shown in the figure). ), It is configured to be tilted by about 45 °.

Further, as shown in FIGS. 5 and 6, the release button 15 is formed inside the lever 32 by inserting the tubular body 15a into the insertion hole 32b formed in the upper surface 32a of the lever 32 of the sensor unit 13. The rod 15b is arranged in the lever 32 in a state where the rod 15b is inserted into the insertion hole 32e of the rib 32d, and the direction of the arrow B1 toward the main body 11 and the direction of the arrow B2 away from the main body 11 can be moved. ing. Further, a spring 51 is arranged around the rod 15b. The spring 51 is arranged in a compressed state between the top surface inside the tubular body 15a and the rib 32d, and urges the release button 15 in the direction of arrow B2.

When the release button 15 is moved in the direction of the arrow B1 (in the state shown in FIGS. 6 and 8), the release button 15 is directed toward the rear end portion 11b of the main body portion 11 (in the direction of the arrow D2 shown in FIG. 8). ) The regulating member 14 is pressed and the regulating member 14 is slid toward the rear end portion 11b, whereby the movement restriction of the lever 32 (the movement restriction in the direction of the arrow B1) by the regulating member 14 is released. Further, when the release button 15 is moved in the direction of the arrow B2 (in the state of FIGS. 4 and 5), the release button 15 is directed toward the tip end portion 11a of the main body portion 11 (in the direction of the arrow D1 shown in the figure). Allows the regulating member 14 to slide. In this case, the release button 15 is urged by the spring 51 in the direction of the arrow B2 as described above. Therefore, when no external force (pressing pressure from the user's fingertip) is acting in the direction of the arrow B1, the release button 15 is oriented in the direction of the arrow B2 due to the urging force of the spring 51 as shown in FIG. Can be moved.

The measuring unit 3 executes a measurement process for measuring the current flowing through the electric wire 100 based on the magnetism (detection signal S output from the clamp sensor 2) detected by the clamp sensor 2 under the control of the control unit 6.

The operation unit 4 is configured to include various switches, and outputs an operation signal when each switch is operated. The display unit 5 displays the measured value of the current or the like according to the control of the control unit 6. The control unit 6 controls each unit constituting the measuring device 1 according to an operation signal output from the operation unit 4.

Next, a method of using the measuring device 1 will be described with reference to the drawings. As an example, an example of measuring the current flowing through the electric wire 100 shown in FIG. 2 will be described.

First, the operation unit 4 is operated to turn on the power, and then the sensor units 12 and 13 of the clamp sensor 2 clamp the electric wire 100 to be detected.

Here, in the clamp sensor 2 of the measuring device 1, as shown in FIG. 5, the spring 51 is attached in the initial state in which the external force in the direction of the arrow B1 is not acting on the release button 15 and the lever 32 of the sensor unit 13. The release button 15 is moved in the direction of the arrow B2 by the force, and the tubular body 15a of the release button 15 projects from the upper surface 32a of the lever 32. Further, in this state, as shown in FIG. 4, the regulation member 14 in the direction of the arrow D1 is allowed to slide, and the regulation member 14 is positioned on the tip end portion 11a side of the main body portion 11 by the urging force of the spring 41. The regulating member 14 is in contact with the lower end of the lever 32. Therefore, as a result of the movement of the lever 32 in the direction of the arrow B1 being restricted, the rotation of the sensor unit 13 in the direction of the arrow A1 (the direction in which the tip portions 12a and 13a of the sensor units 12 and 13 open each other) is restricted. Therefore, the sensor units 12 and 13 are maintained in the closed state.

When the electric wire 100 is clamped by the sensor portions 12 and 13 of the clamp sensor 2 in this state, the main body portion 11 is gripped and then released by the fingertips of the gripping hand (for example, the fingertips of the thumb). The button 15 is pushed toward the main body 11 (moved in the direction of the arrow B1 shown in FIG. 8). At this time, as shown in the figure, the contact surface 15d of the contact portion 15c of the release button 15 comes into contact with the tip end portion of the regulation member 14. Further, the component force in the direction of the arrow D2 of the force for pushing the release button 15 (the force in the direction of the arrow B1) acts on the contact portion between the regulating member 14 and the contact surface 15d. As a result, the regulating member 14 is moved in the direction of arrow D2.

Then, as shown in FIG. 8, when the release button 15 is pushed in (moved in the direction of the arrow B1) until the upper portion of the cylinder body 15a of the release button 15 is located near the upper surface 32a of the lever 32, the regulating member is used. 14 is located on the rear end portion 11b side of the main body portion 11 to release the contact state between the lower end portion of the lever 32 and the restricting member 14, thereby releasing the movement restriction of the lever 32 in the direction of the arrow B1. To.

Then, the release button 15 is pushed further. In this case, since the upper portion of the tubular body 15a of the release button 15 is located near the upper surface 32a of the lever 32, the fingertip pushing the release button 15 also comes into contact with the upper surface 32a, as shown in FIG. , The lever 32 is pushed toward the main body 11 together with the release button 15 (moved in the direction of arrow B1). As a result, as shown in the figure, the sensor unit 13 rotates in the direction of the arrow A1, and the sensor units 12 and 13 are opened.

Next, the sensor units 12 and 13 are brought closer to the electric wire 100, and then, as shown in FIG. 9, the electric wire 100 is passed through the gap between the tip portions 12a and 13a of the sensor units 12 and 13, and the sensor unit 12 and 13 are passed. The electric wire 100 is positioned at the opposite portion of 13. Next, the pressing of the release button 15 and the lever 32 (pressing on the release button 15 and the lever 32) is released.

At this time, the release button 15 is moved in the direction of the arrow B2 shown in FIG. 9 by the urging force of the spring 51. Further, the sensor unit 13 is rotated in the direction of the arrow A2 shown in the figure by the urging force of the torsion spring 33, and subsequently, as shown in FIG. 2, the tip portions 12a and 13a of the sensor units 12 and 13 are brought together. It becomes a closed closed state. As a result, as shown in the figure, the annular body 60 is formed by the sensor units 12 and 13, and the electric wire 100 is surrounded (clamped) by the annular body 60. Next, the sensor units 12 and 13 detect the magnetism generated by the current flowing through the electric wire 100 and output the detection signal S.

On the other hand, in the state where the release button 15 is moved in the direction of the arrow B2, the regulating member 14 in the direction of the arrow D1 shown in FIG. 4 (toward the tip end 11a side of the main body 11) is allowed to slide. The regulating member 14 is slid in the direction of arrow D1 by the urging force of the spring 41 and is located on the tip end portion 11a side. Further, in the state where the regulating member 14 is located on the tip end portion 11a side, the regulating member 14 comes into contact with the lower end portion of the lever 32 of the sensor unit 13, which restricts the movement of the lever 32 in the direction of the arrow B1. The sensor units 12 and 13 are locked.

Subsequently, the operation unit 4 is operated to instruct the start of measurement. In response to this, the control unit 6 controls the measurement unit 3 to execute the measurement process. In this measurement process, the measuring unit 3 receives a current flowing through the electric wire 100 (measured amount for the detection target) based on the detection signal S (magnetism as the detected amount detected by the clamp sensor 2) output from the clamp sensor 2. ) Is measured. Next, the control unit 6 controls the display unit 5 to display the value of the current measured by the measurement unit 3. With the above, the measurement of the current flowing through the electric wire 100 is completed.

On the other hand, when the measurement is completed and the clamp of the electric wire 100 is released, the release button 15 is pushed toward the main body 11 with a fingertip to move the regulating member 14 in the direction of arrow D2 (see FIG. 8). .. Subsequently, with the regulating member 14 located on the rear end 11b side of the main body 11 and the contact state between the lower end of the lever 32 and the regulating member 14 being released, the lever 32 is released together with the release button 15 of the main body. By pushing toward 11, the sensor unit 13 rotates in the direction of the arrow A1 as shown in FIG. 9, and the sensor units 12 and 13 are opened. Next, the electric wire 100 is passed through the gap between the tip portions 12a and 13a of the sensor portions 12 and 13, and the electric wire 100 is positioned outside the facing portion of the sensor portions 12 and 13. As a result, the clamp of the electric wire 100 by the sensor units 12 and 13 is released.

Subsequently, the release button 15 and the lever 32 are released from being pushed. At this time, the release button 15 is moved in the direction of arrow B2 (see FIG. 4) by the urging force of the spring 51. Further, the sensor unit 13 is rotated in the direction of the arrow A2 shown in the figure by the urging force of the torsion spring 33, and then the tip portions 12a and 13a of the sensor units 12 and 13 are closed to each other as shown in the figure. It becomes a closed state. Further, since the release button 15 is moved in the direction of the arrow B2, the regulating member 14 is slid in the direction of the arrow D1 by the urging force of the spring 41 and is located on the tip end portion 11a side of the sensor portion 13. The regulating member 14 comes into contact with the lower end of the lever 32. As a result, the movement of the lever 32 in the direction of the arrow B1 is restricted, and the sensor units 12 and 13 are locked.

In this way, the clamp sensor 2 and the measuring device 1 are slidably arranged on the main body 11 and are positioned on the front end 11a side to regulate the movement of the lever 32 in the direction of the arrow B1 and the rear end 11b. The regulating member 14 that releases the movement restriction of the lever 32 in the direction of the arrow B1 in the state of being positioned on the side, and the regulating member 14 that is arranged on the lever 32 so that the movement of the arrows B1 and B2 can be moved and is moved in the direction of the arrow B1 It is provided with a release button 15 that allows the regulating member 14 to slide toward the rear end portion 11b and slide toward the tip end portion 11a side of the regulating member 14 when moved in the direction of the arrow B2. Therefore, according to the clamp sensor 2 and the measuring device 1, the release button 15 is moved (pushed) in the direction of the arrow B1 and then the lever 32 is moved together with the release button 15 in the direction of the arrow B1. By the operation, the sensor units 12 and 13 in the closed state (locked state) can be opened. Therefore, according to the clamp sensor 2 and the measuring device 1, there are two independent (non-continuous) operations of sliding the locking slide portion and pushing the lever to open the clamp portion. The operability can be sufficiently improved as compared with the conventional clamp sensor and the measuring device provided with the clamp sensor.

Further, according to the clamp sensor 2 and the measuring device 1, the release button 15 is oriented in the direction of the arrow B2 because the spring 41 for urging the regulating member 14 from the rear end portion 11b side to the tip portion 11a side is provided. The restricting member 14 can be automatically slid toward the tip end portion 11a side of the main body portion 11 by the urging force of the spring 41 when moving to. Therefore, according to the clamp sensor 2 and the measuring device 1, the restricting member 14 does not automatically move to the tip portion 11a side (a configuration in which the regulating member 14 is manually slid toward the tip portion 11a side). The operability when releasing the locked state of the sensor unit 13 can be further improved.

Further, according to the clamp sensor 2 and the measuring device 1, since the spring 51 for urging the release button 15 in the direction of the arrow B2 is provided, the spring 51 is provided with no external force acting in the direction of the arrow B1. The release button 15 can be automatically moved in the direction of the arrow B2 by the urging force. Therefore, according to the clamp sensor 2 and the measuring device 1, the release button 15 does not automatically move in the direction of the arrow B2 (the release button 15 is manually moved in the direction of the arrow B2). The operability when the sensor unit 13 is locked can be further improved.

The configuration of the clamp sensor and the measuring device is not limited to the above configuration. For example, the configuration example in which the sensor unit 13 (only one of the sensor units 12 and 13) is rotatable has been described above, but both the configuration in which the sensor unit 12 can be rotated and the sensor units 12 and 13 can be rotated. It is also possible to adopt a configuration that enables it. When such a configuration is adopted, each member having the same function as the lever 32, the regulating member 14 and the release button 15 described above is provided for each rotatable sensor unit, so as to be the same as the clamp sensor 2 described above. The effect can be realized.

Further, the example in which the lever 32 is provided at the base end portion 13b of the sensor portion 13 (rotatable sensor portion) (the sensor portion 13 and the lever 32 are integrally formed) has been described above, but the sensor portion 13 and the lever 32 It is also possible to adopt a configuration in which is formed as a separate body. In this case, a configuration may be adopted in which the separately formed lever 32 is arranged (fixed) at the base end portion 13b of the sensor portion 13, or the lever 32 is arranged at a position separated from the sensor portion 13. A configuration may be adopted in which the sensor unit 13 and the lever 32 are connected via a link or the like.

Further, the shapes of the lever 32 and the release button 15 are not limited to the above-mentioned shapes, and can be changed as appropriate.

Further, although the example provided with the spring 41 for urging the regulating member 14 from the rear end portion 11b side toward the tip portion 11a side has been described above, the regulating member 14 is manually moved to the tip portion 11a side without the spring 41. It is also possible to adopt a configuration that slides with.

Further, although the example provided with the spring 51 for urging the release button 15 in the direction of the arrow B2 has been described above, the configuration in which the release button 15 is manually moved in the direction of the arrow B2 without the spring 51 is adopted. You can also.

Further, although the clamp sensor 2 that detects magnetism as the detected amount has been described as an example, it can be applied to a clamp sensor that detects various detected amounts (for example, voltage and capacitance) other than magnetism. Further, the measuring device 1 for measuring the current as an example of the measured quantity based on the detected amount (magnetic in the above example) detected by the clamp sensor 2 has been described as an example, but magnetic or the above-mentioned magnetic. It can be applied to a measuring device that measures various measured quantities other than current based on various detected quantities other than current.

1 Measuring device 2 Clamp sensor 3 Measuring part 11 Main body part 11a Tip part 11b Rear end part 12, 13 Sensor part 12a, 13a Tip part 14 Restricting member 15 Release button 15c Contact part 15d Contact surface 32 Lever 41,51 Spring 60 Ring 100 Electric wire A1, B1, B2, D, D1, D2 Arrow S Detection signal

Claims (4)

The detection target is detected in a state where at least one of the main body and one end of the main body is rotatably configured so as to open and close each other and surround the detection target. The rotatable sensor unit includes a pair of sensor units for detecting the amount, a regulating member for restricting the rotation of the rotatable sensor unit in a direction in which the tip portions are opened, and a lever. A clamp sensor configured to be rotatable in a direction in which each of the tip portions opens in response to the movement of the lever in the direction toward the main body portion.
The restricting member is slidably arranged on the main body in a direction connecting the one end side and the other end side of the main body, and abuts on the lever in a state of being located on the one end side. It is configured to restrict the movement of the lever in the direction toward the main body and to release the movement restriction of the lever in the direction toward the main body when it is located on the other end side.
A release button arranged on the surface of the lever is provided so that the lever can be moved in a direction toward the main body and in a direction away from the main body.
When the release button is moved toward the main body, the restricting member is slid toward the other end, and when the restricting member is moved away from the main body, the regulating member is said. A clamp sensor configured to allow sliding towards one end. A first urging member for urging the regulating member from the other end side toward the one end side is provided.
The clamp sensor according to claim 1, wherein the restricting member is slid toward one end by the urging force of the first urging member when the release button is moved away from the main body. A second urging member for urging the release button in a direction away from the main body is provided.
The clamp sensor according to claim 1 or 2, wherein the release button is moved in a direction away from the main body by the urging force of the second urging member in a state where no external force is applied in the direction toward the main body. .. A measuring device including the clamp sensor according to any one of claims 1 to 3 and a measuring unit that measures a measured amount for the detected object based on the detected amount detected by the clamp sensor.

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