JP2001074773A - Portable measuring instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for holding one test lead rod by a measuring instrument itself and unnecessary sagging of a cord at the time of measurement. SOLUTION: The portable measuring instrument comprises a case body 12, an outer cover 22, and an intermediate cover 32 provided, in the plane facing the outer cover 22, with a recess 35 for containing two test lead rods 41 and one or more protrusions 38 for winding the cord 45 of each test lead rod 41 at a part other than the containing recess 35. A holder 37 for holding one test lead rod 41 freely in provided on one side part 35a in the containing recess 35 of the intermediate cover 32 in the longitudinal direction and a cut 28 for leading out a part of one test lead rod 41 including the contact pin 44 thereof held by the holder 37 is provided at the side plate 24 part of the outer cover 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable measuring instrument capable of smoothly performing an operation of measuring a voltage or the like using two test lead bars.

[0002]

2. Description of the Related Art In a portable measuring instrument such as a digital tester or an analog tester which can be easily carried, usually, a current value, a voltage value and a resistance value of an object to be measured are measured by using two test lead rods. And a function of conducting an electrical continuity test.

In this case, two test lead rods each having a contact pin protruding from the side of the grip portion are pulled out from the portable measuring instrument via a cord, and one of the test lead rods is pulled out. The gripping part is gripped by one hand, and the test lead rod is gripped by the other hand, and the contact pin is brought into contact with a predetermined position of the object to be measured. Will be done.

[0004]

However, at the time of actual measurement work at the site, both hands are blocked because the test lead rods must be individually gripped, so that the portable measuring instrument itself must be placed on a desk or the like. Whenever various setting operations such as range setting are required, the measurement work must be interrupted, the test lead rod must be released, and the necessary operation work must be performed. there were.

[0005] Further, at the time of measurement, there is another inconvenience that the cord drawn from the portable measuring instrument droops unnecessarily and clings together, thereby hindering a smooth measuring operation.

The present invention has been made in view of the above-mentioned problems in the prior art, and one of the test lead bars can be held by the portable measuring device itself to eliminate the need for grasping by hand. It is an object of the present invention to provide an easy-to-use portable measuring instrument which can be prevented from hanging down.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and the first feature of the present invention is that a case body and an opening surface of the case body can be freely opened and closed. An outer lid body that covers at least a middle lid body that is built in between the case body and the outer lid body at the time of covering,
On the surface of the inner lid facing the outer lid, a storage portion recessed to accommodate two test lead rods, and a cord included in each test lead bar at a portion excluding the storage portion At least one or more projections protrudingly provided for winding are provided. A holder capable of holding one test lead rod is provided on one side in the length direction of the inner cover in the storage section. In the side plate portion of the outer lid body which is disposed and located at the portion facing the holder when the lid is covered, a portion including the contact pin of one test lead rod held by the holder can be led out to the outside. That the notch is provided.

A second feature of the present invention is that a case body, an outer lid body that opens and closes the opening surface of the case body, and a cover body between the case body and the outer lid body when the cover is closed. A storage portion provided with at least a built-in inner lid, and a storage portion recessed to receive two test lead rods freely on a surface of the inner lid facing the outer lid; At least one or more projections protruded to wind the cord of each test lead rod at the part to be removed are provided, and the side plate part of the outer lid has a test lead rod taken out. There is a drawer notch for allowing the cord to be freely drawn.

Further, it is preferable to provide an eaves portion at the top of the projection in each of the above inventions for preventing the wound cord from being pulled out.

[0010]

FIG. 1 is a front view showing an opened state of an example of the present invention, FIG. 2 is a bottom view of FIG. 1 in which a test lead rod is omitted, and FIG. 4 (a) is a plan view of FIG. 3, FIG. 4 (b) is a bottom view of FIG. 3, and FIG. 5 is a longitudinal sectional view taken along line AA of FIG. .

[0011] According to these figures, the entire portable measuring instrument 11 has a case body 12 formed to have an appropriate planar shape such as a substantially square shape, and an opening surface 1 of the case body 12.
An outer lid 22 for opening and closing the cover 2a, and an inner lid 3 built in between the case body 12 and the outer lid 22 when the lid is closed.
2 at least.

Among them, the case body 12 has a front panel provided with a solar panel S, a dial 14 for setting a range and the like, a liquid crystal display section 15 for displaying measured values and the like on the front side. 13 and a side plate portion 16 surrounding the periphery of the front plate portion 13 at an appropriate height.

A pair of bearings, which are spaced apart from each other and have fitting holes 18 whose opening surfaces face each other, are provided on the end surface 16a side of one side plate portion 16 located in the longitudinal direction of the case body 12. Parts 17, 17 are provided.

The outer lid 22 is provided on the opening surface 1 of the case body 12.
A side plate portion having a cover plate portion 23 that covers 2a and an end surface 24a that surrounds the periphery of the cover plate portion 23 at an appropriate height and that comes into contact with the end surface 16a of the side plate portion 16 so as to face-to-face with each other. 24.

In addition, the bearing portions 17 of the case body 12,
On the end face 24a side of the outer lid body 22 facing the support shaft 17, there is provided a support shaft portion 25 having fitting protrusions 26, 26 which can be freely fitted into the fitting holes 18, 18, respectively. By fitting the mating projections 26, 26 into the corresponding fitting holes 18, 18, the outer lid 22
Can be opened and closed freely. Further, the side plate portion 24 of the cover plate portion 23 located on the opposite side to the side plate portion 24 provided with the support shaft portion 25 is provided with a pressure contact allowing the pressure contact with the corresponding portion of the inner lid body 32 at the time of covering. A piece 27 is provided.

On the other hand, the inner cover 32 built in between the case body 12 and the outer cover 22
A top plate portion 33 arranged to cover 2a;
3 and a hem plate 34 arranged along the inner peripheral side of the side plate 16 of the case body 12.

Further, the top plate portion 33 on the side facing the lid plate portion 23 has a storage portion 35 in which two test lead rods 41, 41 can be freely stored near one side half in the length direction. Are recessed toward the case body 12 side. In this case, the appropriate position of the storage section 35 is
A total of three support pieces 36, 36, 36 for stably positioning the test lead rods 41, 41 are erected, and the gripping portions 42 of the test lead rod 41 are separately provided between the respective support pieces 36, 36. It is desirable to be able to pinch or hold.

Further, near the other half in the length direction of the top plate 33, the cords 45, 45 of the two test lead rods 41, 41 housed in the housing 35 are wound together so as to be wound. A pair of protrusions 38, 38 which are appropriately spaced apart, are provided upright. The protrusion 38 is not limited to the illustrated example, and may be formed by erecting one or more pillars at appropriate positions. Also, the protrusion 3
It is preferable to provide an eaves portion 39 that protrudes in the surface direction in order to prevent the pulled out cord 45 from being pulled out, at the top portion 38a of 8.

Further, one of the test lead rods 41 is provided with a grip 42 on one side 35a of the inner lid body 32 in the length direction in the storage portion 35 along the length direction of the storage portion 35. A holder 37 that can be held through the intermediary is provided. In this case, the holder 37 can be appropriately shaped.
A slit 37 having an inner diameter capable of contacting the step portion 43 of the grip portion 42 to prevent the test lead rod 41 from retreating further, and having such a small width that the cord 45 can be introduced into the top portion thereof.
It is preferable to form a substantially cylindrical shape having a. Reference numeral 40 in FIGS. 1 and 4 indicates a lead-out groove for pulling out the cord 45 from the inside of the case main body 12.

In addition, the side plate 16 of the case body 12 located at a position facing the holder 37 when the cover is closed, and the outer cover 2
Each of the two side plate portions 24 is provided with a cutout portion 19, 28 for leading out a portion including the contact pin 44 of the test lead rod 41 held by the holder 37 to the outside. In this case, depending on the height of the holder 37, the cutout portion 28 may be provided only on the side of the side plate portion 24 of the outer lid 22.

Further, the cord 45 of the other test lead rod 41 taken out can be freely pulled out to the side plate portion 24 of the outer lid body 22 located on the opposite side to the lead-out notch portion 28. It is preferable to provide a cutout portion 29 for drawing. In addition, in the corresponding portion of the cover plate portion 23 of the outer cover body 22,
A cutout window 30 into which the eaves 39 of the projection 38 of the inner lid 32 can be introduced can be provided.

Since the present invention is constructed as described above, the portable measuring instrument 11 when not in use is provided with the code 4
5 and 45 are wound through a pair of protrusions 38, 38, and two test lead rods 4 are inserted into the storage portion 35 of the inner cover 32.
1 can be easily carried by accommodating 1 and closing the outer lid 22 to make it compact. Moreover, the protrusion 3
In the case where 8 has the eaves portion 39, the cord 45 can be stably wound without pulling out after winding.

On the other hand, during normal use, the outer lid 2
2, the two test lead rods 41 are removed while removing the cords 45, 45 wound around the pair of projections 38, 38.
Is taken out, and the cord 45,
By pulling out 45 and closing the outer lid 22,
The measurement operation can be started while the test lead rod 41 is individually gripped by both hands. In this case, the cords 45, 45 of an unnecessary length are wound around the pair of projections 38, 38, so that the pulled-out cords 45, 45 are prevented from hanging more than necessary and the measurement is performed smoothly. Can perform work. When the cutout portion 29 is not provided, the measurement operation is performed with the lid open.

If it is necessary to keep one hand open at the time of measurement, the outer lid 22 is opened, one test lead rod 41 is taken out, and the step portion 44 of the grip portion 42 is engaged with the holder 37. The test lead rod 41 is inserted from the outside and held until it reaches the other end.
By removing the cord 45 wound around 38 while removing it, and closing the outer lid 22, one test lead rod 41 is supported on the portable measuring instrument 11 side as shown in FIG. The other test lead rod 41 can be arranged so that it can be gripped with one hand. For this reason, even if various setting operations such as turning the dial 14 for setting the range are required, the necessary operation can be performed using one free hand, so that the measurement operation can be performed efficiently and smoothly. Can be carried out.

[0025]

As described above, according to the present invention, when not in use, the portable measuring instrument has two test lead rods accommodated in the accommodating portion after the cord is wound through the projecting portion. It can be easily carried by closing the outer lid and making it compact. When the projection has an eaves portion, the cord can be stably wound.

On the other hand, during normal use, the two test lead rods are taken out while removing the cord wound on the protruding portion, and the measurement work is performed while holding the test lead rods separately with both hands. You can enter. In this case, by winding a cord of an unnecessary length around the protrusion,
The measurement work can be performed smoothly by preventing the cord being pulled out from hanging more than necessary.

When it is necessary to keep one hand open during measurement, one test lead rod is taken out and inserted into the holder from outside, and the other test lead rod is taken out while removing the cord. Thus, one test lead rod can be supported by the portable measuring instrument, and the other test lead rod can be arranged so as to be gripped by one hand. For this reason, even if various setting operations such as a range setting are required, the necessary operation can be performed using one free hand, so that the measurement operation can be performed efficiently and smoothly.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of the present invention in an open state.

FIG. 2 is a bottom view of FIG. 1 omitting a test lead bar.

FIG. 3 is a front view showing an example of the present invention in a cover state.

4A is a plan view of FIG. 2, and FIG. 4B is a bottom view of FIG.

FIG. 5 is a longitudinal sectional view in the direction of arrows AA in FIG. 2;

FIG. 6 is a perspective view showing an example of a use state of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Portable measuring device 12 Case main body 12a Opening surface 13 Front plate part 14 Dial 15 Liquid crystal display part 16 Side plate part 16a End surface 17 Bearing part 18 Fitting hole 19 Derivation notch part 22 Outer cover part 23 Cover plate part 24 Side plate part 24a End face 25 Support shaft part 26 Fitting protrusion 27 Press-contact piece 28 Notch part for derivation 29 Notch part for drawing out 30 Notch window 32 Middle lid part 33 Top plate part 34 Hem plate part 35 Storage part 35a One side part 36 Support piece 37 Holder 37a Slit 38 Projecting part 38a Top part 39 Eave part 40 Outgoing groove 41 Test lead rod 42 Gripping part 43 Step part 44 Contact pin 45 Cord P Solar panel

Claims (3)

[Claims] 1. A case body comprising: a case body; an outer cover body for opening and closing the opening surface of the case body; and an inner cover body provided between the case body and the outer cover body at the time of covering. On the surface of the inner lid facing the outer lid, a storage portion recessed to accommodate two test lead rods, and a cord included in each test lead bar at a portion excluding the storage portion At least one or more projections protrudingly provided for winding are provided. A holder capable of holding one test lead rod is provided on one side in the length direction of the inner cover in the storage section. In the side plate portion of the outer lid body which is disposed and located at the portion facing the holder when the lid is covered, a portion including the contact pin of one test lead rod held by the holder can be led out to the outside. A portable measuring instrument provided with a notch for use in a portable device. 2. A system comprising: a case main body; an outer lid body for opening and closing the opening surface of the case main body; and an inner lid body incorporated between the case main body and the outer lid body at the time of covering. On the surface of the inner lid facing the outer lid, a storage portion recessed to accommodate two test lead rods, and a cord included in each test lead bar at a portion excluding the storage portion At least one or more protrusions protruded to wind the wire, and a cutout portion for pulling out a cord of a test lead rod taken out is freely provided on a side plate portion of the outer lid body. A portable measuring device characterized by comprising: 3. The portable measuring instrument according to claim 1, wherein an eave portion is provided at a top portion of the projection to prevent the wound cord from being pulled out.