CN110646647B - Measuring probes and measuring devices - Google Patents

Abstract

The present invention can accurately position the cover part on the clamping part at each position, and can prevent the increase of the manufacturing cost; the present invention comprises a probe (2), a clamping part (3), a cover part (4), (5) and the positioning part (6), (7), the positioning part has a protrusion (6) and a groove part (7), the cover part has a first cover part (4) and a second cover part (5), the first The cover member (4) is provided with a front end hole (41), and the second cover member (5) is provided with a protrusion (6), and the dimension (T1) from the center line (X) to the inner surface of the front end hole (41) is less than The dimension (T2) from the center line (X) to the inner side (60) of the protrusion (6); as a result, according to the invention, the cover part can be positioned accurately on the clamping part at each position, Furthermore, an increase in manufacturing cost can be prevented.

Description

Measuring probes and measuring devices

technical field

The present invention relates to a measuring probe and a measuring device having the measuring probe and measuring electrical characteristics.

Background technique

As a measurement probe, there is, for example, a probe disclosed in Patent Document 1. The measuring probe of Patent Document 1 has a probe, a clamping portion, a probe cover, and a positioning mechanism. The tip of the probe cover is provided with a tip hole through which the tip of the probe protrudes outward. In the measuring probe of Patent Document 1, the probe cover is positioned on the holding part at each of the first position, the second position and the third position by the positioning mechanism, wherein the first position is to make the probe a position where the needle protrudes outward from the probe cover with a length of a first predetermined value, and a second position is a position where the probe protrudes outward from the probe cover with a length of a second predetermined value shorter than the length of the first predetermined value, The third position is a position where the probe is housed inside the probe cover without protruding outward from the probe cover.

The positioning mechanism in the measuring probe of Patent Document 1 has a convex portion provided on the inner wall of the probe cover, a guide groove formed on the surface of the clamping portion, and first, second, and third branch grooves. In the measuring probe of Patent Document 1, by moving the convex portion in the guide groove in the axial direction, the convex portion fits into the first branch groove, the second branch groove, and the third branch groove, so that the first position, the second branch groove At each of the position and the third position, the probe cover is positioned on the clamping portion.

[Prior Art Literature]

【Patent Literature】

Patent Document 1: Japanese Publication, Japanese Patent Laid-Open No. 2011-191281

However, in the measuring probe of Patent Document 1, for example, as shown in (C) of FIG. In the convex portion 402 , a dimension T10 from the axis X to the inner wall of the front hole 401 is smaller than a dimension T20 from the axis X to the inner wall of the convex portion 402 . As a result, in the measuring probe of Patent Document 1, for example, as shown in (B) of FIG. 402 is crushed or the like as shown by the dotted line in (C) of FIG. the convex part shown). In this case, it may not be possible to accurately position the probe cover on the holding part at each position. This means that the probe does not protrude outward from the probe cover with a length of the first predetermined value or a length of the second predetermined value.

Here, when a sliding mold is used as the mold, the convex portion 402 (the convex portion shown by the solid line in (C) in FIG. 9 and (B) in FIG. 10 ) can be obtained according to the design. The probe cover is accurately positioned on the clamping portion at each position. However, when a slide type mold is used, mold design and mold production become complicated, mold cost increases, and manufacturing cost increases accordingly.

Contents of the invention

The problem to be solved by the present invention is to provide a measuring probe and a measuring device capable of accurately positioning a cover member on a holding member at various positions and preventing an increase in manufacturing cost.

The measuring probe of the present invention has the following features.

The measuring head of the present invention is provided with: a rod-shaped probe, a rod-shaped holding member that covers and supports the rear end portion of the probe, and a cylindrical cover member that covers the front end portion of the probe and holds the probe. The front end part of the component, and is installed on the clamping component in a manner that can move along the centerline direction of the probe and the clamping component and can rotate around the centerline, and the positioning part is respectively arranged on the clamping component and the cover component , and the cover member is positioned on the holding member at each of the first position and the second position, wherein the above-mentioned first position is a position where the probe protrudes from the cover member to the outside by a length of a first predetermined value , the second position is a position where the probe protrudes outward from the cover member with a length of a second predetermined value less than the length of the first predetermined value; the positioning portion has: a protrusion, which is arranged on the inner surface of the cover member or clips On the outer side of the holding part, a groove is provided on the outer side of the holding part or the inner side of the cover part, and the protrusion is engaged in the groove in a manner capable of moving along the center line and rotating around the center line; The cover member has a first cover member on the side of the front end portion and a second cover member on the side of the rear end portion. On the first cover member and the second cover member, there are respectively provided the first cover member and the first cover member which are fitted into each other so as to be a single body. The second cover member is formed as an integral fitting portion, and a front end hole through which the front end portion of the probe protrudes outward is provided on the front end portion of the first cover member, and a protrusion or a protrusion is provided on the inner surface of the second cover member. The dimension of the groove portion from the centerline to the inner surface of the front hole is smaller than the dimension from the centerline to the inner surface of the protrusion.

In the measuring probe of the present invention, it is preferable that the front end side of the protrusion is perpendicular to the center line, and the rear end side of the protrusion moves from the inner side of the protrusion toward the second cover member as it goes from the front end side to the rear end side. The inner side of the protrusion, or the outer side of the protrusion is inclined to the outer side of the clamping part.

The measuring probe of the present invention has the following features.

The measuring head of the present invention is provided with: a rod-shaped probe, a rod-shaped holding member that covers and supports the rear end portion of the probe, and a cylindrical cover member that covers the front end portion of the probe and holds the probe. The front end part of the component, and is installed on the clamping component in a manner that can move along the centerline direction of the probe and the clamping component and can rotate around the centerline, and the positioning part is respectively arranged on the clamping component and the cover component , and the cover member is positioned on the holding member at each of the first position and the second position, wherein the above-mentioned first position is a position where the probe protrudes from the cover member to the outside by a length of a first predetermined value , the second position is a position where the probe protrudes outward from the cover member by a length of a second predetermined value less than the length of the first predetermined value; the positioning portion has: a protrusion disposed on the outer surface of the clamping member , a groove portion, which is provided on the inner surface of the cover member, and the protrusion is engaged in the groove portion in a manner that can move along the centerline direction and can rotate around the centerline; the cover member has a first cover member on the front end side and a rear The second cover member on the side of the end part is respectively provided with a fitting portion on the first cover member and the second cover member so that the first cover member and the second cover member of the single body are integrally formed. The front end portion of the first cover member is provided with a front end hole for the front end portion of the probe to protrude to the outside, and a groove portion is provided on the inner surface of the second cover member, and the dimension from the center line to the inner surface of the front end hole is, Smaller than the dimension from the center line to the inner surface of the protrusion.

In the measurement probe of the present invention, it is preferable that the front end side of the protrusion is perpendicular to the center line, and the rear end side of the protrusion moves from the front end side to the rear end side from the outer side of the protrusion to the side of the holding member. Outer side sloping.

The measuring probe of the present invention has the following features.

The measuring head of the present invention is provided with: a rod-shaped probe, a rod-shaped holding member that covers and supports the rear end portion of the probe, and a cylindrical cover member that covers the front end portion of the probe and holds the probe. The front end part of the component, and is installed on the clamping component in a manner that can move along the centerline direction of the probe and the clamping component and can rotate around the centerline, and the positioning part is respectively arranged on the clamping component and the cover component , and the cover member is positioned on the holding member at each of the first position and the second position, wherein the above-mentioned first position is a position where the probe protrudes from the cover member to the outside by a length of a first predetermined value , the second position is a position where the probe protrudes outward from the cover member by a length of a second predetermined value less than the length of the first predetermined value; the positioning portion has: a protrusion disposed on the inner side of the cover member, The groove part is provided on the outer surface of the holding member, and the protrusion is engaged in the groove part in a manner capable of moving along the center line and rotating around the center line; the cover part has a first cover part on the front end part side and a rear The second cover member on the side of the end part is respectively provided with a fitting portion on the first cover member and the second cover member so that the first cover member and the second cover member of the single body are integrally formed. The front end portion of the first cover member is provided with a front end hole for the front end portion of the probe to protrude to the outside, and a protrusion is provided on the inner surface of the second cover member, and the dimension from the center line to the inner surface of the front end hole is, Smaller than the dimension from the center line to the inner surface of the protrusion.

In the measuring probe of the present invention, it is preferable that the front end side of the protrusion is perpendicular to the center line, and the rear end side of the protrusion moves from the inner side of the protrusion toward the second cover member as it goes from the front end side to the rear end side. The inner side is sloped.

The measurement probe of the present invention preferably has a groove portion having a moving groove portion disposed along the centerline direction, the protrusion is fitted in the moving groove portion in a manner capable of moving along the centerline direction, and the first positioning The groove part for positioning and the groove part for second positioning are respectively provided around the center line from the groove part for movement, and the protrusion is engaged with the groove part for positioning first and the groove for second positioning in such a manner as to be rotatable around the center line. part, it is possible to position the cover part on the clamping part at various positions.

In the measurement probe of the present invention, it is preferred that: among the wall surfaces of the positioning grooves of the first positioning groove and the second positioning groove, the wall surface on the opposite side to the moving groove is provided with a The stop surface for stopping the rotation of the protrusion around the center line is provided with a locking protrusion on the bottom surface of each positioning groove, and when the protrusion abuts against the stop surface, the locking protrusion is locked on the The surface of the protrusion is on the opposite side to the surface abutting against the stopper surface.

In the measuring probe of the present invention, preferably, a first visual recognition display part for visual recognition of the first position and a second visual recognition display part for visual recognition of the second position are respectively provided on the outer surface of the holding member.

In the measurement probe of the present invention, it is preferred that the positioning portion positions the cover member on the clamping member at each of the first position, the second position and the third position, wherein the third position does not allow the probe to It protrudes from the cover member to the outside, but is housed in the cover member.

The measurement probe of the present invention preferably has a groove portion having a moving groove portion disposed along the centerline direction, and the protruding portion is fitted in the moving groove portion in a manner capable of moving along the centerline direction. The groove portion for positioning, the groove portion for second positioning, and the groove portion for third positioning are provided around the center line from the rear end, middle, and front end of the groove portion for movement, respectively, and the projection is rotatable around the center line. Engaging with the first positioning groove, the second positioning groove, and the third positioning groove, the cover member is positioned on the holding member at each position.

In the measurement probe of the present invention, it is preferable that the wall surface of each positioning groove of the first positioning groove, the second positioning groove, and the third positioning groove is on the opposite side to the movement groove. On the wall surface, there is a stop surface that stops the rotation of the protrusion around the center line, and a locking protrusion is provided on the bottom surface of each positioning groove. When the protrusion abuts against the stop surface, the The locking convex portion is locked on the surface of the protruding portion on the opposite side to the surface abutting against the stopper surface.

In the measuring probe of the present invention, it is preferred that: on the outer surface of the clamping member, a first visual recognition display part for visual recognition of the first position, a second visual recognition display part for visual recognition of the second position, and a visual recognition display part for visual recognition of the second position are respectively provided on the outer surface of the holding member The third visual identification display part of the third position.

A measuring device according to the present invention is characterized by comprising: the measuring probe configured as described above, and a measuring device main body that performs electrical measurement processing via the measuring probe configured as described above.

(invention effect)

According to the present invention, it is possible to provide a measuring probe and a measuring device capable of accurately positioning a cover member on a holding member at each position and preventing an increase in manufacturing cost.

Description of drawings

FIG. 1 is a partially enlarged perspective view showing a portion of a measuring probe according to an embodiment of the present invention broken away.

FIG. 2 is an explanatory view showing a measurement probe. Among them, (A) is a front view of the measuring probe (view from the direction of IIA in Fig. 1), (B) is a top view of the measuring probe (view from the direction of IIB in Fig. 1), and (C) is a view showing Bottom view of the measuring probe (IIC arrow view in Figure 1).

Fig. 3 is an exploded perspective view showing main parts (a probe, a holding member, a first cover member, and a second cover member).

Fig. 4 is an enlarged vertical sectional view of a main part showing a state in which a protrusion is fitted into a moving groove (an enlarged sectional view taken along line IV-IV in (B) of Fig. 2 ).

5 is an enlarged vertical sectional view of a main part showing a state where the cover member is positioned on the holding member at various positions (an enlarged sectional view taken along line V-V in FIG. 2(A)). Among them, (A) is an enlarged longitudinal sectional view of the main part showing the state where the cover member is positioned on the holding member at the third position, and (B) is an enlarged longitudinal sectional view showing that the cover member is positioned on the holding member at the second position. (C) is an enlarged longitudinal sectional view of main parts showing a state in which the cover member is positioned on the holding member at the first position.

Fig. 6 is a front view of main parts showing a state where the cover member is positioned on the holding member at various positions. Among them, (A) is a front view showing the main part of the state where the cover member is positioned on the holding member at the third position, and (B) is a front view showing that the cover member is positioned on the holding member at the second position. A front view of a main part of a state, (C) is a front view of a main part showing a state in which the cover member is positioned on the holding member at the first position.

Fig. 7 is a cross-sectional explanatory view showing the operation of the positioning unit. Among them, (A) is a cross-sectional explanatory view showing a state where the protrusion is engaged with the moving groove (a cross-sectional explanatory view corresponding to (B) in FIG. 7 ), and (B) is a cross-sectional explanatory view showing that the protrusion is engaged with the A cross-sectional explanatory view of the state of the moving groove connected to the three positioning grooves (an enlarged cross-sectional view taken along line VIIB-VIIB in FIG. 4), (C) showing the state where the protrusion is engaged with the third positioning groove Cross-sectional explanatory view (a cross-sectional explanatory view corresponding to (B) in FIG. 7 ).

Fig. 8 is a developed explanatory view showing the operation of the positioning unit. Among them, (A) is a development explanatory view showing a state in which the protrusion is engaged with the third positioning groove, (B) is a development explanatory view showing a state in which the protrusion is engaged in the second positioning groove, (C ) is a developed explanatory view showing a state in which the protrusion is engaged with the first positioning groove.

Fig. 9 is an enlarged longitudinal sectional view showing a cover member. Among them, (A) is an enlarged vertical cross-sectional view showing the first cover member and the second cover member which are separately formed, and (B) is a state in which the first cover member and the second cover member are integrally formed as a single body. (C) is an enlarged longitudinal sectional view showing a cover member (probe cover of the measuring probe of Patent Document 1) not implementing the present invention.

Fig. 10 is a cross-sectional explanatory view showing a state in which a cover member is formed. Among them, (A) is a cross-sectional explanatory view showing the state of the second cover member formed independently from the first cover member, and (B) is a view showing the formation of the cover member not implementing the present invention (the measurement probe of Patent Document 1). Cross-sectional explanatory drawing of the state of the probe cover).

Fig. 11 is a diagram showing the appearance of a measuring device main body and a measuring probe in the measuring device.

(Symbol Description)

1...Measuring probe

2…probe

3…Holding parts

30...inclined surface

31...First visual recognition display unit

32...Second visual recognition display part

33...The third visual recognition display part

34...The first character display part

35...Second character display part

36...Slot display for movement

4...First cover member (cover member)

40...Fitting convex part (fitting part)

41...Front hole

42…vertical wall

5...Second cover member (cover member)

50...Fitting concave part (fitting part)

51...flange

52...Protruding display part

53…Mold

54...Mold

6...Protruding part (positioning part)

60...Inner side

61...Front side

62…Rear end side

7...Groove (positioning part)

70...Slot for movement

71...First positioning groove

72...Second positioning groove

73...Third positioning groove

74…stop surface

75...Locking convex part

8...Insulated wire (cable wire)

A...the first specified value

B...Second specified value

T1...Dimensions from the center line X to the inner surface of the front hole 41

T2...Dimensions from the center line X to the inner surface 60 of the protrusion 6 as a positioning part

X...Centerline (axis)

PL1...parting line

10...Measuring device

100…Measuring device body

110…shell

120...Operation Department

130...Display

400…probe cover

401...Front hole

402...Convex part

403…Mold

404…Mold

T10...Dimensions from the axis X to the inner wall of the tip hole 401

T20...Dimensions from the axis X to the inner wall of the protrusion 402

PL10...parting line

Detailed ways

Hereinafter, an example of an embodiment (example) of a measuring probe according to the present invention will be described in detail with reference to the drawings.

(Explanation of the configuration of the embodiment)

Hereinafter, the configuration of the measuring probe 1 according to the present embodiment will be described. In addition, "front end" means the left end of a drawing in this example, and "rear end" means the right end of a drawing in this example.

(Description of Measuring Probe 1)

The measurement probe 1 according to the present embodiment, as shown in FIGS. cable) 8. The measurement probes 1 are used in a pair and constitute a measurement device 10 (see FIG. 11 ) described later. Here, the measuring device 10 is configured to include a pair of measuring probes 1, 1, and a measuring device main body 100 (see FIG. 11 ) for measuring the electrical characteristics of the object to be measured. , 8 are respectively connected with measuring probes 1, 1. In addition, the measurement probes 1 and 1 in FIG. 11 are in a state where the probes 2 (not shown) are housed in the cover members 4 and 5 .

(Description of Probe 2)

The probe 2 is composed of a conductive member such as brass whose surface is plated with gold or nickel. As shown in FIG. 1, FIG. 3-FIG. 5, and FIG. 7, the probe 2 is formed in the shape of a round rod in this example. The tip of the probe 2 is formed in a conical pointed shape so that it can be easily brought into contact with the object to be measured. The rear end side (not shown) of the probe 2 is electrically connected to the insulated wire 8 in the holding member 3 .

(Description of clamping part 3)

The holding member 3 is made of an insulating member such as polyvinyl chloride resin. As shown in FIGS. 1-7 , the holding member 3 is formed in the shape of a round bar or a cylinder in this example. The holding member 3 fixes the probe 2 and the insulated wire 8 inside it. The holding member 3 covers the rear end portion of the probe 2 and is supported by, for example, screwing or bonding. Thereby, the centerline X of the probe 2 and the centerline X of the holding member 3 are coaxial. In addition, the front end portion of the probe 2 protrudes from the front end of the holding member 3 . As for the holding member 3, it is preferable to form the holding member for positive electrodes in red, and to form the holding member for negative electrodes in black.

On the outer surface of the front end portion of the holding member 3 , that is, on the plane (upper surface) in this example, there is provided an inclined surface 30 that inclines upward from the front end side toward the rear end side. On the outer side of the front end portion of the holding member 3, that is, on the plane and the front in this example, a groove portion 7 (guide) as a positioning portion is provided. In addition, the front end of the groove portion 7 is positioned at the rear end of the inclined surface 30 . The front end portion of the holding member 3 in this example is formed in a truncated conical shape whose diameter (outer diameter) gradually decreases toward the front end.

(Description of cover parts 4 and 5)

The cover members 4 and 5 are made of an insulating member such as polypropylene. The colors of the cover members 4 and 5 and the color of the holding member 3 may be the same color or different colors. As shown in FIGS. 1-7 , 9 , and 10 , the cover members 4 , 5 are formed in a cylindrical shape in this example. The inner diameters of the cover members 4 , 5 are larger than the outer diameters of the probe 2 and the clamping member 3 . The tip portion of the probe 2 and the tip portion of the holding member 3 are covered inside the cover members 4 , 5 . The cover members 4 and 5 are attached to the holding member 3 so as to be movable in the direction of the center line X of the probe 2 and the holding member 3 and to be rotatable around the center line X.

The cover members include a first cover member 4 (cap) on the front end portion side and a second cover member 5 (barrier) on the rear end portion side. The first cover member 4 includes a small-diameter front end portion, a middle-diameter middle portion, and a large-diameter rear end portion. A rear end hole having a circular cross section is provided at the rear end portion of the first cover member 4 . The inner diameter of the rear end hole of the first cover member 4 is larger than the outer diameter of the front end portion of the second cover member 5 . Thus, the front end portion of the second cover member 5 is fitted into the rear end hole of the first cover member 4 .

On the inner side of the rear end hole of the first cover member 4 , a fitting protrusion 40 is integrally provided in an annular shape. On the outer surface of the front end portion of the second cover member 5 , a fitting recess 50 is provided in an annular shape. By fitting the fitting convex portion 40 and the fitting concave portion 50 to each other, the first cover member 4 and the second cover member 5 which are formed independently are integrally formed.

Here, the front end side surface of the fitting convex portion 40 is perpendicular to the center line X, and the rear end side surface of the fitting convex portion 40 moves from the inner side surface side of the fitting convex portion 40 as it goes from the front end side to the rear end side. It is inclined toward the inner side of the first cover member 4 . Accordingly, it is easy to fit the fitting convex portion 40 into the fitting concave portion 50 , and it is difficult for the fitting convex portion 40 to come off from the fitting concave portion 50 . Alternatively, the first cover member 4 may be provided with a fitting concave portion, and the second cover member 5 may be provided with a fitting convex portion.

A front end hole 41 having a circular cross section through which the front end portion of the probe 2 protrudes outward is provided at the front end portion of the first cover member 4 . In the middle part of the first cover member 4 is provided a middle hole which is fitted into the front end part of the holding member 3 from the outside. A vertical wall 42 perpendicular to the center line X is provided at the boundary of the front hole 41 and the middle hole. The intermediate hole is formed in the shape of a truncated cone whose inner diameter gradually increases from the front end side toward the rear end side. Thereby, it is comprised so that the middle part of the 1st cover member 4 may fit easily in the front-end|tip part of the clamping member 3 which has a truncated conical shape from the outside.

The second cover member 5 is formed in a cylindrical shape with the same diameter. The second cover member 5 is provided with a fitting hole for fitting the holding member 3 from the outside. A circular flange portion 51 is integrally provided on the outer surface of the front end portion of the second cover member 5 . A fitting recessed portion 50 is provided on the outer surface of the second cover member 5 on the front end side of the flange portion 51 . The outer surface of the second cover member 5 on the front end side of the fitting recess 50 is inclined such that the outer diameter gradually becomes smaller toward the front end. That is, the tapered surface is formed so that the fitting convex portion 40 is easily fitted into the fitting concave portion 50 . A protrusion 6 (protrusion) as a positioning portion is provided on the inner side of the middle portion of the second cover member 5 .

The dimension T1 from the center line X to the inner surface of the front end hole 41 in the first cover member 4 is smaller than the dimension from the center line X to the inner surface 60 of the protrusion 6 serving as a positioning portion in the second cover member 5 . T2.

(Description of positioning units 6 and 7)

As shown in FIGS. 1-8 , the positioning portion includes a protrusion 6 provided on the inner side of the second cover member 5 and a groove 7 provided on the outer side of the clamping member 3 . The protrusion 6 is engaged with the groove 7 so as to be movable in the direction of the center line X and rotatable around the center line X. As shown in FIG.

In the first position ((C) in Fig. 5, the position shown in (C) in Fig. 6), the second position ((B) in Fig. position) and the third position (the positions shown in (A) in FIG. 5 and (A) in FIG. superior.

The first position is a position where the probe 2 protrudes outward from the front end hole 41 of the first cover member 4 by a length of a first predetermined value A. As shown in FIG. The second position is a position where the probe 2 protrudes outward from the front end hole 41 of the first cover member 4 by a length of a second predetermined value B shorter than the length of the first predetermined value A. As shown in FIG. The third position is a position where the probe 2 is housed in the cover members 4 , 5 without protruding outward from the front end hole 41 of the first cover member 4 .

In addition, the length of the specified value A is set to a length of 19 mm or less according to CAT II of the IEC61010 standard. Regarding the length of the specified value B, it is set to a length of 4mm or less according to CATⅢ of the same standard.

As shown in (A) and (B) of FIG. 9 and (A) of FIG. 10 , the inner surface 60 of the protrusion 6 is parallel to the central line X. As shown in FIG. The front end side 61 of the protrusion 6 is perpendicular to the center line X. As shown in FIG. The rear end side 62 of the protrusion 6 is inclined from the inner side 60 of the protrusion 6 toward the inner side of the second cover member 5 as it goes from the front end to the rear end.

As shown in FIGS. 1-8 , the groove portion 7 includes a moving groove portion 70 , a first positioning groove portion 71 , a second positioning groove portion 72 , and a third positioning groove portion 73 . The wall surfaces of the positioning grooves 71 , 72 , 73 are perpendicular to the center line X. As shown in FIG. The moving groove portion 70 is provided on the plane of the holding member 3 along the centerline X direction, and the protrusion 6 is fitted into the moving groove portion 70 so as to be movable along the centerline direction. The first positioning groove portion 71, the second positioning groove portion 72, and the third positioning groove portion 73 are respectively provided: in the range from the plane to the front of the clamping member 3, from the moving groove portion 70 The rear end, the middle, and the front end are arranged around the centerline X, and the protrusion 6 is engaged with the first positioning groove part 71, the second positioning groove part 72, and the third positioning groove part 71 so as to be rotatable around the centerline X. The groove portion 73 positions the cover members 4 and 5 on the holding member 3 at each of the first position, the second position, and the third position. The first positioning groove portion 71 , the second positioning groove portion 72 , and the third positioning groove portion 73 are provided perpendicular to the moving groove portion 70 .

(Description of the stop surface 74 and the locking protrusion 75)

As shown in FIG. 7 and FIG. 8, in the wall surfaces of each positioning groove portion of the first positioning groove portion 71, the second positioning groove portion 72, and the third positioning groove portion 73, relative to the moving groove On the wall surface opposite to the portion 70 , a stopper surface 74 for stopping the rotation of the protrusion 6 around the center line X is provided. The stop surface 74 is parallel to the center line X. As shown in FIG.

As shown in Fig. 7 and Fig. 8, a locking protrusion 75 is provided on the bottom surface of each positioning groove portion 71, 72, 73, and when the protrusion 6 abuts on the stop surface 74, the locking protrusion The portion 75 is locked on the surface of the protruding portion 6 opposite to the surface abutting against the stopper surface 74 . The locking protrusion 75 is parallel to the central line X, and is formed as a small convex line with a semicircular cross section.

(Description of Visual Recognition Display Section)

As shown in FIGS. 1-3 , and 6 , a first visual recognition display part 31 , a second visual recognition display part 32 and a third visual recognition display part 33 are respectively provided on the outer surface of the clamping member 3 . Each visual recognition display part of the first visual recognition display part 31, the second visual recognition display part 32 and the third visual recognition display part 33 forms an annular shape or partial It is constituted by narrow grooves provided in an annular shape. In addition, each visual recognition display portion may be provided in a color different from that of the holding member 3 , for example, in addition to being a groove.

The first visual recognition display portion 31 is provided at a position on the rear end side of the first positioning groove portion 71 , and enables visual recognition of the first position of the cover members 4 , 5 . That is, when the cover members 4 and 5 are located at the first position, the rear end of the second cover member 5 is located at the first visual recognition display portion 31 .

As a result, by visually observing the state in which the rear end of the second cover member 5 is located in the first visual recognition display portion 31 , it can be visually recognized as the state in which the cover members 4 and 5 are located in the first position.

Moreover, the 2nd visual recognition display part 32 is provided in the same position as the 1st positioning groove part 71, and the 2nd position of the cover members 4 and 5 is visually recognized. That is, as shown in (B) of FIG. 6 , when the cover members 4 , 5 are located at the second position, the rear end of the second cover member 5 is located at the second visual recognition display portion 32 .

As a result, by visually observing the state in which the rear end of the second cover member 5 is located in the second visual recognition display portion 32 , it can be visually recognized as the state in which the cover members 4 and 5 are located in the second position. Furthermore, the third visual recognition display portion 33 is provided between the first positioning groove portion 71 and the second positioning groove portion 72 , and visually recognizes the third position of the cover members 4 , 5 . That is, as shown in (A) of FIG. 2 and FIG. 6 , when the cover members 4 and 5 are located at the third position, the rear end of the second cover member 5 is located at the third visual recognition display portion 33 .

As a result, by visually observing the state in which the rear end of the second cover member 5 is located in the third visual recognition display portion 33 , it can be visually recognized as the state in which the cover members 4 and 5 are located in the third position.

(Explanation of the character display part)

As shown in (C) of FIG. 2 , a first character display portion 34 and a second character display portion 35 are respectively provided on the outer surface of the holding member 3 . The first character display portion 34 is provided adjacent to the rear end side of the first visual recognition display portion 31 . The first character display part 34 is a character of "CAT II" of the IEC61010 standard. The second character display portion 35 is provided adjacent to the rear end side of the second visual recognition display portion 32 . The second character display part 35 is a character of "CAT III" of the IEC61010 standard.

Through the rear end of the second cover member 5 being adjacent to “CAT II” of the first character display portion 34, it can be visually recognized that the cover members 4, 5 are located at the first position, and the probe 2 starts from the second position with the length of the first specified value A. A state in which the front end hole 41 of the cover member 4 protrudes outward.

In addition, since the rear end of the second cover member 5 is adjacent to “CAT III” on the second character display portion 35, it can be visually recognized that the cover members 4 and 5 are located at the second position, and the probe 2 is positioned at the second predetermined value B. A state in which the length protrudes outward from the front end hole 41 of the first cover member 4 .

(Description of the moving groove display unit 36 and the protrusion display unit 52)

As shown in (B) in FIG. 1 and FIG. 2 , in the plane of the clamping member 3, a moving groove portion is provided at a position extending from the moving groove portion 70 in the direction of the center line X toward the rear end side. display unit 36 . The moving groove portion display portion 36 is constituted by, for example, lines of a grid pattern. In addition, the moving groove portion display portion 36 may be provided, for example, as a line having a color different from that of the holding member 3 instead of a grid pattern line.

As shown in FIG. 1 and (B) in FIG. 2 , in the rear end of the second cover member 5 , at a position extending from the protrusion 6 toward the rear end side in the direction of the central line X, a protrusion display portion is provided. 52. The protrusion display portion 52 is, for example, a notch. In addition, the protrusion display part 52 may be provided so that it may give it the color different from the color of the 2nd cover member 5, for example other than a notch.

When the movement groove display portion 36 of the clamping member 3 and the projection display portion 52 of the second cover member 5 are overlapped in the direction of the center line X, the projection 6 of the second cover member 5 is located at the clamping position. The state of the moving groove portion 70 of the component 3 .

As a result, it can be visually recognized that the protrusion 6 is located in the moving groove 70 by visually observing the state where the moving groove display 36 and the projection display 52 overlap in the center line X direction.

(Description of the manufacturing process of the measuring probe 1)

Next, the manufacturing process of the measuring probe 1 will be described.

First, the probe 2 and the holding member 3 are manufactured by insert molding. On the other hand, the first cover member 4 and the second cover member 5 are formed independently, respectively.

As shown in (A) of FIG. 10 , the second cover member 5 is formed by molds 53 , 54 . The dies 53 and 54 separate the corners of the inner side surface 60 and the rear end side surface 62 of the protrusion 6 as a parting line PL1. As a result, when the molds 53, 54 are pulled out, the protrusion 6 will not be crushed, etc., so that the protrusion 6 (consisting of the inner side surface 60, the front end side surface 61, and the rear end side surface 62) can be obtained according to the design. Part 6).

Next, as shown in (A) and (B) in FIG. The first cover part 4 and the second cover part 5 of the body are formed in one piece.

Then, the integral cover members 4 and 5 are fitted to the front end portion of the probe 2 and the front end portion of the holding member 3 from the outside. That is, by sliding the inner surface 60 of the protrusion 6 of the second cover member 5 along the inclined surface 30 of the holding member 3 , the protrusion 6 is engaged with the front end side of the moving groove 70 . At this time, since the inclined surface 30 of the holding member 3 is an inclined surface that inclines upward from the front end to the rear end, on the other hand, the rear end side surface 62 of the protrusion 6 of the second cover member 5 is inclined as described above. Therefore, by sliding the protrusion 6 , the protrusion 6 can be easily and reliably engaged with the moving groove 70 . Moreover, since the front end side surface 61 of the protruding portion 6 of the second cover member 5 is formed as a vertical surface as described above, when the protruding portion 6 is fitted into the moving groove portion 70, the protruding portion 6 is not easy to move from the moving groove portion. 70 off. In this way, the measuring probe 1 is assembled, and the manufacturing process of the measuring probe 1 is completed.

(Explanation of action of embodiment)

The measuring probe 1 according to the present embodiment has the above-mentioned configuration. Hereinafter, the action of the measuring probe 1 according to the present embodiment will be described.

First, the normal state will be described.

In the normal state, as shown in Fig. 1, Fig. 2, Fig. 4, (A) in Fig. 5 and (A) in Fig. The front end hole 41 of the cover member 4 protrudes to the outside, but is accommodated in the cover members 4 and 5 and is protected by the cover members 4 and 5 .

At this time, as shown by the solid lines in (C) in FIG. 7 and (A) in FIG. 74 and the locking protrusion 75. As a result, the state of the cover members 4 and 5 in the third position is maintained.

In addition, as shown in (A) of FIG. 1 , FIG. 2 , and FIG. 6 , the rear end of the second cover member 5 is located in the third visual recognition display portion 33 . As a result, it can be visually recognized that the cover members 4 and 5 are in the third position.

Second, when changing from the normal state to a state in which the probe 2 protrudes outward from the front end hole 41 of the first cover member 4 by a length of the second predetermined value B (the state of the length of the second predetermined value B), or making the probe 2 The operation of the needle 2 in the state where the length of the first predetermined value A protrudes outward from the front end hole 41 of the first cover member 4 (the state of the length of the first predetermined value A) will be described.

During this operation, the fingertips are brought into contact with the flange portion 51 of the cover member 5 to perform the operation.

First, the cover members 4 and 5 at the third position are rotated around the center line X relative to the clamping member 3, and the protrusions located between the stopper surfaces 74 and the locking protrusions 75 of the third positioning grooves 73 are 6 (protrusion 6 shown by a solid line in (A) in FIG. 8 ) is located at the tip of the groove portion 70 for movement (see the two-dot chain line in (A) in FIG. 8 ).

At this time, the projection display part 52 of the second cover member 5 and the movement groove display part 36 of the holding member 3 overlap in the centerline X direction (see FIG. 1 and (B) in FIG. 2 ). As a result, it can be visually recognized that the protrusion 6 is located in the moving groove 70 . That is, it can be visually recognized that the cover members 4 and 5 can move in the direction of the center line X with respect to the clamping member 3 .

Next, the cover members 4 and 5 at the third position are moved relative to the holding member 3 from the front end side toward the rear end side in the direction of the center line X, so that the protrusion 6 located at the front end of the moving groove portion 70 ( FIG. 8 The protrusion 6 shown by the two-dot chain line in (A)) is located in the middle of the moving groove portion 70 (refer to the protrusion 6 shown by the two-dot chain line in (B) in FIG. 8 ) Or the rear end of the groove part 70 for movement (refer to the protrusion part 6 shown by the dashed-two dotted line in FIG. 8(C)).

At this time, the rear end of the second cover member 5 is positioned at the second visual recognition display part 32 or the first visual recognition display part 31 . As a result, it can be visually recognized that the cover members 4 and 5 are in the second position or the first position. Furthermore, the rear end of the second cover member 5 is adjacent to “CAT III” of the second character display portion 35 or “CAT II” of the first character display portion 34 . As a result, it can be visually recognized that the cover members 4 and 5 are located at the second position or the first position, and that the probe 2 extends from the front end of the first cover member 4 with the length of the second predetermined value B or the length of the first predetermined value A. The hole 41 protrudes outward.

Then, the cover members 4 and 5 located at the second position or the first position are rotated around the center line X relative to the clamping member 3, so that the protrusion 6 located at the middle or rear end of the moving groove 70 (in FIG. (B) or (C), the protrusion 6 shown by the two-dot chain line) is located between the stop surface 74 of the second positioning groove 72 or the first positioning groove 71 and the locking protrusion 75. between (refer to the solid line in (B) or (C) in Fig. 8).

At this time, when the protrusion 6 gets over the locking protrusion 75, a sense of moderation (Feeling of moderation) can be obtained. From this moderate feeling, it can be recognized that the protrusion 6 is located between the stopper surface 74 and the locking protrusion 75 of the second positioning groove 72 or the first positioning groove 71 . In addition, since the protrusion 6 is in contact with the stopper surface 74 , the rotation of the cover members 4 and 5 around the center line X with respect to the holding member 3 can be restricted.

In this way, when the cover parts 4, 5 are in the second position, as shown in (B) in FIG. 5 and (B) in FIG. The front end hole 41 protrudes to the outside. In addition, when the cover parts 4, 5 are in the first position, as shown in (C) in FIG. 5 and (C) in FIG. The front end hole 41 protrudes to the outside. At this time, the front end surface of the holding member 3 is in contact with the vertical wall 42 of the first cover member 4 .

In addition, regarding the operation of changing from the state of the length of the second specified value B to the normal state or the state of the length of the first specified value A, or the operation of changing from the state of the length of the first specified value A to the normal state or the state of the length of the second specified value B The operation of the state is substantially the same as the operation of changing from the normal state to the state of the length of the second predetermined value B or the state of the length of the first predetermined value A, so the description thereof is omitted.

(Explanation of Effect of Embodiment)

The measuring probe 1 according to the present embodiment has the above-mentioned configuration and functions. Hereinafter, effects of the measuring probe 1 according to the present embodiment will be described.

In the measuring probe 1 according to this embodiment, the cover member is divided into the first cover member 4 having the tip hole 41 and the second cover member 5 having the protrusion 6, so that the first cover can be formed independently. part 4 and the second cover part 5.

As a result, in the measuring probe 1 according to the present embodiment, even if the dimension T1 from the center line X to the inner surface of the tip hole 41 in the first cover member 4 is smaller than the dimension T1 from the center line X in the second cover member 5 Even in the case of the dimension T2 from the center line X to the inner surface 60 of the protrusion 6 as the positioning portion, the protrusion 6 manufactured according to the design can be obtained. That is, by dividing the cover member into the first cover member 4 and the second cover member 5 , in the inner surface of the fitting hole of the second cover member 5 , there is no gap formed from the center line X to the inner surface of the fitting hole. The dimension is smaller than the dimension T2 from the center line X to the inner surface 60 of the protrusion 6 . As a result, the second cover member 5 can be molded by the two-part molds 53 and 54 having the corners of the inner side surface 60 and the rear end side surface 62 of the protrusion 6 as the parting line PL1. Thus, when the molds 53, 54 are pulled out, the protrusion 6 will not be crushed, etc., so that the protrusion 6 (consisting of the inner side 60, the front side 61, and the rear side 62) can be obtained according to the design. 6).

In the measuring probe 1 according to the present embodiment, the protruding portion 6 manufactured according to the design can be obtained, so the cover members 4 and 5 can be positioned accurately at each of the first position, the second position, and the third position. Positioned on the clamping part 3. Furthermore, in the measuring probe 1 according to the present embodiment, the molds 53 and 54 divided into two parts are used instead of the slide mold, so the mold design and mold manufacturing become simple and the mold cost becomes low. Accordingly, manufacturing cost can be reduced.

Here, referring to FIG. 9(C) and FIG. 10(B), a probe cover 400 that does not implement the measuring probe of the present invention (the measuring probe of Patent Document 1) will be described.

As shown in (C) of FIG. 9 , this probe cover 400 is not divided into two like the first cover member 4 and the second cover member 5 of the present invention, but is constituted by one cover member. In addition, this probe cover 400 has a front end hole 401 at its front end, and a protrusion 402 as a positioning mechanism is provided on the inner wall of the probe cover 400 , and the dimension T10 from the axis X to the inner wall of the front end hole 401 is , which is smaller than the dimension T20 from the axis X to the inner wall of the convex portion 402 .

As a result, when forming this probe cover 400, the molds 53 and 54 divided into two parts using the corners of the protrusions 6 as the parting line PL1 of the present invention cannot be used, but (B) in FIG. 10 As shown, molds 403 and 404 divided into two using the rear end of the front hole 401 as the parting line PL10 are used. Therefore, when the molds 403 and 404 are pulled out, the convex portion 402 is crushed by the mold 403 as shown by the dotted line in (C) in FIG. (C) in 9, and the convex part shown by the solid line in (B) in FIG. 10). In this case, it may not be possible to accurately position the probe cover 400 on the clamping portion (not shown) at each position. This means that the probe (not shown) does not protrude outward from the probe cover 400 by the length of the first predetermined value or the length of the second predetermined value.

In addition, in the molding of the probe cover 400, when a slide mold is used instead of the two-part molds 403 and 404 shown in (B) in FIG. 9 (C) and the convex part shown by the solid line in (B) in FIG. However, when a slide type mold is used, mold design and mold production become complicated, mold cost increases, and manufacturing cost increases accordingly.

On the other hand, in the measuring probe 1 according to the present embodiment, the protruding portion 6 manufactured according to the design can be obtained, and therefore, the cover member can be placed at each of the first position, the second position, and the third position. 4, 5 are accurately positioned on the clamping part 3. Furthermore, in the measuring probe 1 according to the present embodiment, the molds 53 and 54 divided into two parts are used instead of the slide mold, so the mold design and mold manufacturing become simple and the mold cost becomes low. Accordingly, manufacturing cost can be reduced.

In the measuring probe 1 according to the present embodiment, the front end side surface 61 of the protrusion 6 is perpendicular to the center line X, therefore, the distance between the front end side surface 61 of the protrusion 6 and the groove 7 perpendicular to the center line X can be adjusted. The wall surfaces are reliably in contact with each other. That is, in the measuring probe 1 according to the present embodiment, each of the front end side surface 61 of the protruding portion 6 and the first positioning groove portion 71 , the second positioning groove portion 72 , and the third positioning groove portion 73 can The wall surface on the front end side of the positioning groove portion is reliably in surface contact. Thus, in the measuring probe 1 according to the present embodiment, the cover members 4 and 5 can be more accurately and reliably positioned on the holding member at each of the first position, the second position, and the third position. 3 on.

In the measuring probe 1 according to the present embodiment, the rear end side surface 62 of the protrusion 6 extends from the inner surface 60 of the protrusion 6 toward the inner surface of the second cover member 5 as it goes from the front end side to the rear end side. Since the side is inclined, by sliding the protrusion 6 of the cover member 5 along the inclined surface 30 of the holding member 3, the protrusion 6 can be easily and reliably engaged with the moving groove 70 . Furthermore, in the measuring probe 1 according to the present embodiment, the front end side surface 61 of the protrusion 6 is perpendicular to the center line X, and therefore, when the protrusion 6 is fitted into the moving groove 70 , the protrusion 6 is not easily moved from the center line X. The moving groove portion 70 comes off.

In the measuring probe 1 according to the present embodiment, the moving groove 70 is provided on the outer surface of the clamping member 3 along the center line X direction, and the moving groove 70 is formed from the rear end, the middle, and the front end. Around the center line X, a first positioning groove portion 71 , a second positioning groove portion 72 , and a third positioning groove portion 73 are respectively provided. As a result, in the measuring probe 1 according to the present embodiment, the protrusion 6 provided on the inner surface of the cover member 5 can be engaged with the moving groove so as to be movable in the center line X direction. 70, and are respectively engaged with the first positioning groove portion 71, the second positioning groove portion 72, and the third positioning groove portion 73 so as to be rotatable around the center line X. Accordingly, in the measuring probe 1 according to the present embodiment, the cover members 4 and 5 can be positioned on the clamping member 3 at the first position, the second position, and the third position.

In the measuring probe 1 according to this embodiment, the first positioning groove portion 71, the second positioning groove portion 72, and the third positioning groove portion 73 are respectively provided with a stopper surface 74 and a locking protrusion. Section 75. As a result, in the measuring probe 1 according to the present embodiment, by sandwiching the protrusion 6 between the stopper surface 74 and the locking protrusion 75, the cover members 4 and 5 can be maintained at the first position, the second position, and the second position. The status of each position of the second position and the third position.

In the measuring probe 1 according to the present embodiment, the locking protrusions 75 are respectively provided in the first positioning groove 71 , the second positioning groove 72 , and the third positioning groove 73 . As a result, in the measuring probe 1 according to the present embodiment, when the protrusion 6 passes over the locking protrusion 75, a proper feeling can be obtained, and the position of the protrusion 6 in the first positioning groove can be recognized based on the proper feeling. 71 , the second positioning groove 72 , and the third positioning groove 73 , between the stopper surface 74 and the locking protrusion 75 of any one of the positioning grooves 73 .

In the measuring probe 1 according to this embodiment, the first visual recognition display part 31 , the second visual recognition display part 32 , and the third visual recognition display part 33 are respectively provided on the clamping member 3 . As a result, in the measuring probe 1 according to the present embodiment, the rear end of the second cover member 5 is positioned at the first visual recognition display part 31 , the second visual recognition display part 32 and the third visual recognition display part 31 by visual observation. The state of the display unit 33 can be visually recognized as a state in which of the first position, the second position, and the third position the cover members 4 and 5 are located.

Furthermore, in the measuring probe 1 according to the present embodiment, “CAT II” of the first character display portion 34 and “CAT III” of the second character display portion 35 are respectively provided on the clamping member 3 . As a result, in the measuring probe 1 according to the present embodiment, the rear end of the second cover member 5 and "CAT II" of the first character display part 34 and "CAT III" of the second character display part 35 are visually observed. Adjacent states can be visually recognized: the cover parts 4 and 5 are located at the first position or the second position, and the probe 2 moves from the first cover part 4 with the length of the first specified value A or the length of the second specified value B. The state in which the front end hole 41 protrudes outward.

Furthermore, in the measuring probe 1 according to the present embodiment, the movement groove display portion 36 is provided on the holding member 3 , and the protrusion display portion 52 is provided on the second cover member 5 . As a result, in the measuring probe 1 according to the present embodiment, the protrusion display portion 52 of the second cover member 5 and the movement groove display portion 36 of the clamping member 3 are displayed in the center line X direction by visual observation. In the superimposed state, it is possible to visually recognize the state in which the protruding portion 6 is located in the moving groove portion 70 . That is, it can be visually recognized that the cover members 4 and 5 can move in the centerline X direction with respect to the clamping member 3 . In the measuring probe 1 according to the present embodiment, the holding member 3 formed by insert-molding the probe 2 and the first cover member 4 and the second cover member 5 formed separately and integrated are integrally assembled. As a result, in the measuring probe 1 according to the present embodiment, there is no risk of loss of components such as the probe 2 , the holding member 3 , the first cover member 4 , and the second cover member 5 . In the measuring probe 1 according to the present embodiment, the fitting convex portion 40 is provided on the first cover member 4 , and the fitting concave portion 50 is provided on the second cover member 5 . As a result, in the measuring probe 1 according to the present embodiment, the first cover member 4 and the second cover member 5 can be easily assembled, and the assembled first cover member 4 and the second cover member 5 are not easily assembled. Disengagement occurs.

In addition, in the measuring probe 1 according to this embodiment, the inclined surface 30 and the groove portion 7 serving as a positioning portion are provided on the clamping member 3 , and the protrusion 6 serving as a positioning portion is provided on the second cover member 5 . As a result, in the measuring probe 1 according to the present embodiment, the second cover member 5 integrated with the first cover member 4 can be easily assembled to the holding member 3 integrated with the probe 2 . In addition, the assembled clamping member 3 and the second cover member 5 are less prone to detachment.

(explanation of examples other than embodiment)

In addition, in the above-described embodiment, the moving groove portion 70 , the first positioning groove portion 71 , the second positioning groove portion 72 , and the third positioning groove portion 73 are perpendicular to each other. However, in the present invention, it is also possible to configure such that the moving groove portion 70 and the first positioning groove portion 71, the second positioning groove portion 72, and the third positioning groove portion 73 are not perpendicular to each other, but intersect obliquely. . In addition, in the above-described embodiment, the second character display unit 35 is described as the character "CAT III" of the IEC61010 standard. However, in the present invention, as the second character display portion 35 , characters of “CAT III, IV” of the IEC61010 standard may be described.

Furthermore, in the above embodiment, the cover members (the first cover member 4 and the second cover member 4 and the second The cover parts 5 ) are respectively positioned on the clamping parts 3 . However, in the present invention, the cover members (the first cover member 4 and the second cover member 5 ) may be positioned on the holding member 3 at each of the first position and the second position.

Furthermore, in the above-described embodiment, the protrusion 6 as the positioning portion is provided on the inner side surface of the second cover member 5 as the cover member, and the groove portion 7 (moving groove portion 70, first positioning portion 70) as the positioning portion is provided on the inner side surface of the second cover member 5 as the cover member. A groove portion 71 , a second positioning groove portion 72 , and a third positioning groove portion 73 ) are provided on the outer surface of the holding member.

However, in the present invention, it is also possible to configure the protrusion 6 as the positioning portion on the outer surface of the holding member 3, and the groove portion 7 (moving groove portion 70, first positioning groove portion 70, first positioning portion) The groove portion 71 , the second positioning groove portion 72 , and the third positioning groove portion 73 ) are provided on the inner surface of the second cover member 5 as a cover member. In this case, it is preferable that the rear end side of the protrusion 6 is inclined from the outer side of the protrusion 6 toward the outer side of the holding member 3 as it goes from the front end to the rear end.

(Description of measuring device)

Hereinafter, an example of a measurement device (embodiment) according to the present invention will be described in detail with reference to FIG. 11 .

The measuring device 10 shown in FIG. 11 is a card-type digital multimeter as an example of a "measuring device", which includes a measuring device main body 100 and a pair of measuring probes 1, 1, and is configured to be able to measure voltage values and current values. And various electrical parameters such as resistance value.

In this case, the measuring device main body 100 is an example of a "measuring device main body", and includes a case 110 for accommodating a measurement circuit (not shown), an operation unit 120 and a display unit 130 arranged on the front side of the case 110. , the measuring device main body 100 is configured to be able to perform electrical measurement processing via the two measuring probes 1 , 1 .

In addition, since the details of the configuration of the measuring probe 1 have already been described in the description of the measuring probe 1 described above, detailed description of the measuring probe 1 will be omitted here. It should be noted that the present invention is not limited to the above-mentioned embodiments.

Claims (12)

1. A probe for measuring, characterized in that, have: stick probe, a rod-shaped clamping member covering and supporting the rear end portion of the probe, a cylindrical cover member that covers the front end portion of the probe and the front end portion of the holding member, and is movable along the center line direction of the probe and the holding member and is capable of It is installed on the clamping part in a manner of rotating the center line, The positioning part is respectively provided on the clamping part and the cover part, and at each position of the first position and the second position, the cover part is positioned on the clamping part, wherein, The first position is a position where the probe protrudes outward from the cover member by a length of a first predetermined value, and the second position is a position where the probe is protruded by a length shorter than the first predetermined value. 2. The length of the specified value protrudes outward from the cover part; The positioning part has: a protrusion provided on the outer side of the clamping member, a groove portion provided on an inner side surface of the cover member, and the protrusion is engaged with the groove portion in a manner capable of moving in the direction of the center line and rotating around the center line; The cover member has a first cover member on the front end portion side and a second cover member on the rear end portion side, Fitting portions are respectively provided on the first cover member and the second cover member, and the fitting portions are mutually fitted to form the first cover member and the second cover member as a single body. as one, A front end hole through which a front end portion of the probe protrudes outward is provided on a front end portion of the first cover member, The groove portion is provided on an inner side surface of the second cover member, A dimension from the centerline to an inner surface of the front hole is smaller than a dimension from the centerline to an outer surface of the protrusion. 2. The measuring probe according to claim 1, wherein: The front side of the protrusion is perpendicular to the centerline, The rear end side of the protrusion is inclined from the outer side of the protrusion toward the outer side of the holding member as it goes from the front end to the rear end. 3. A probe for measuring, characterized in that, have: stick probe, a rod-shaped clamping member covering and supporting the rear end portion of the probe, a cylindrical cover member that covers the front end portion of the probe and the front end portion of the holding member, and is movable along the center line direction of the probe and the holding member and is capable of It is installed on the clamping part in a manner of rotating the center line, The positioning part is respectively provided on the clamping part and the cover part, and at each position of the first position and the second position, the cover part is positioned on the clamping part, wherein, The first position is a position where the probe protrudes outward from the cover member by a length of a first predetermined value, and the second position is a position where the probe is protruded by a length shorter than the first predetermined value. 2. The length of the specified value protrudes outward from the cover part; The positioning part has: a protrusion provided on the inner side of the cover member, a groove portion, which is provided on the outer surface of the clamping member, and the protrusion is engaged with the groove portion in a manner capable of moving along the direction of the center line and rotating around the center line; The cover member has a first cover member on the front end portion side and a second cover member on the rear end portion side, Fitting portions are respectively provided on the first cover member and the second cover member, and the fitting portions are mutually fitted to form the first cover member and the second cover member as a single body. as one, A front end hole through which a front end portion of the probe protrudes outward is provided on a front end portion of the first cover member, The protrusion is provided on the inner side of the second cover member, A dimension from the centerline to an inner surface of the front hole is smaller than a dimension from the centerline to an inner surface of the protrusion. 4. The measuring probe according to claim 3, wherein: The front side of the protrusion is perpendicular to the centerline, The rear end side of the protrusion is inclined from the inner side of the protrusion toward the inner side of the second cover member as it goes from the front end to the rear end. 5. The measuring probe according to claim 1 or 3, wherein: The groove part has: a moving groove portion provided along the centerline direction, and the protrusion is fitted in the moving groove portion so as to be movable along the centerline direction, The first positioning groove portion and the second positioning groove portion are respectively provided from the moving groove portion around the center line, and the protrusion is engaged with the center line so as to be rotatable around the center line. The first positioning groove portion and the second positioning groove portion can position the cover member on the holding member at each of the positions. 6. The measuring probe according to claim 5, wherein: Among the wall surfaces of the positioning groove portions of the first positioning groove portion and the second positioning groove portion, the wall surface on the opposite side to the moving groove portion is provided so that the protruding portion The stop surface for the stop of rotation about the centerline, A locking protrusion is provided on the bottom surface of each positioning groove, and when the protrusion abuts against the stop surface, the locking protrusion is locked on the opposite side of the protrusion. The surface abutting against the stopper surface is the surface on the opposite side. 7. The measuring probe according to claim 1 or 3, wherein: A first visual recognition display part for visual recognition of the first position and a second visual recognition display part for visual recognition of the second position are respectively provided on the outer surface of the clamping member. 8. The measuring probe according to claim 1 or 3, wherein: At each of the first position, the second position, and the third position, the positioning portion positions the cover member on the clamping member, wherein the third position does not The probe protrudes from the cover member to the outside, but is housed in a position inside the cover member. 9. The measuring probe according to claim 8, wherein: The groove part has: a moving groove portion provided along the centerline direction, and the protrusion is fitted in the moving groove portion so as to be movable along the centerline direction, The first positioning groove portion, the second positioning groove portion, and the third positioning groove portion are respectively provided around the center line from the rear end, the middle, and the front end of the moving groove portion. The cover is engaged with the first positioning groove, the second positioning groove, and the third positioning groove so as to be rotatable around the center line, and the cover is positioned at each position. A part is positioned on the clamping part. 10. The measuring probe according to claim 9, wherein: Among the wall surfaces of the positioning grooves of the first positioning groove, the second positioning groove, and the third positioning groove, the wall surface on the opposite side to the moving groove on, a stop surface is provided to stop the rotation of said projection about said centerline, A locking protrusion is provided on the bottom surface of each positioning groove, and when the protrusion abuts against the stop surface, the locking protrusion is locked on the opposite side of the protrusion. The surface abutting against the stopper surface is the surface on the opposite side. 11. The measuring probe according to claim 8, wherein: On the outer surface of the clamping member, there are respectively provided a first visual recognition display part for visual recognition of the first position, a second visual recognition display part for visual recognition of the second position, and a third visual recognition display part for visual recognition of the second position. A third visual identification display of the location. 12. A measuring device characterized in that, have: A measuring probe as claimed in any one of claims 1 to 11, and A measuring device main body that performs electrical measurement processing via the measuring probe.

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