JP3225400B2 - Base material detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to, for example, gypsum board,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base material detector used for detecting a base material existing inside a wall or ceiling of a house made of plywood or the like.

[0002]

2. Description of the Related Art Conventionally, as a base material detector of this type, as shown in Japanese Utility Model Publication No. 3-5911, a handle, an insertion needle fixed to the handle and insertable into a detection site such as a wall surface, and the like.
A guide body slidably provided in the handle body in a front-rear direction, having a needle outlet hole through which the insertion needle projects and a contact portion capable of abutting the detection portion at a front end thereof; There is known a structure having an elastic body which urges the insertion needle into the needle outlet hole by urging the insertion needle in the sliding direction.

[0003] Thus, the handle is grasped by hand, and the contact portion of the guide body is brought into contact with a wall surface of a gypsum board or the like as a detection site, and the handle is pushed toward the wall surface while holding the handle. Then, the guide body slides backward into the handle body against the spring member as an elastic body, whereby the insertion needle is exposed and protrudes from the needle outlet hole, and the insertion needle is further pushed by the handle body so that the insertion needle becomes a wall or the like. The insertion needle penetrates a wall or the like in a part where no base material is inserted, and in a part where the base material is present, the insertion needle It pierces the base material and cannot be inserted any more, and you can feel the change in insertion resistance accompanying the insertion of such an insertion needle into the wall etc. by responding, or set the insertion stop position of the insertion needle to the guide body. The base material can be checked visually with the immersion position. The presence or absence in which was to recognize.

[0004]

However, in the case of the above-mentioned conventional structure, if the operator mistakenly retreats the guide body during non-use or use, the insertion needle is exposed from the needle outlet. And a very dangerous condition occurs.For this reason, a cap that covers the needle outlet is detachably attached to the front end of the guide body, but the cap is attached and detached each time it is used or not used. It is necessary to do it, and it is thought that this attachment and detachment is troublesome,
Further, since this cap is unnecessary when used, there is a disadvantage that the cap may sometimes be lost.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and the invention according to claim 1 of the present invention comprises a handle, and a handle fixed to the handle. ,
An insertion needle that can be inserted into a detection site such as a wall surface, and a contact that is provided on the handle so as to be slidable back and forth, and that can be brought into contact with the detection site at a needle outlet hole and a front end where the insertion needle projects and sinks. a guide member having a contact portion, becomes an elastic body to be retracted into the needle Deana the difference Komihari urges the guide member in the forward sliding direction, on
The handle is composed of a rear handle, a middle guide, and a front handle.
Consists of three parts that are mutually removable
The insertion needle is pinched and fixed between the handle member and the guide member.
Is, releasable lock for blocking the switching member provided reciprocally angle rotated to the locked position or unlocked position in the circumferential direction on the handle body, the retraction sliding of the guide member by rotating operation of said switching member And a mechanism.

According to a second aspect of the present invention, as the lock mechanism, a plurality of sliding protrusions having a front surface on a rear outer peripheral surface of the guide body and a regulating surface capable of contacting the handle body are provided. A sliding groove located between the sliding protrusions, and a guide protrusion extending in the front-rear direction that can be fitted to the sliding groove in the handle and a fitting groove that can be fitted to the sliding protrusion. A guide recess is formed, and the switching member is formed with a regulating protrusion that can be fitted in the sliding groove and a fitting recess that can be fitted in the sliding convex, and further, a front portion of the regulating member. A sliding hole through which the guide body is inserted is formed, and an engaging convex portion that fits into the sliding concave groove and a locking concave portion that fits into the sliding convex portion are formed at the rear portion. The front surface may be formed as a blocking surface for preventing the guide body from sliding backward by opposing the rear surface of the sliding protrusion at the locking position of the switching member. It is.

According to a third aspect of the present invention, a detention mechanism is provided between the handle and the switching member, the detention mechanism being capable of restricting a reciprocating angle rotation limit of the switching member. In addition, the invention according to claim 4 is characterized in that the detention mechanism includes a mutually protruding protrusion and two recesses, and the invention according to claim 5 is characterized in that: The guide body is provided with a depth scale for indicating the insertion depth of the insertion needle.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 15 show an embodiment of the present invention, in which 1 is a handle, which is made of a synthetic resin in this case. The handle member 2, the guide member 3 in the middle part, and the regulating member 4 in the front part are composed of three mutually detachable members. The handle member 2 and the guide member 3 are screwed together by screwing parts 2a. And
Also, two locking grooves 3b are formed in the guide member 3, two locking claws 4a are formed in the regulating member 4, and the guiding members are elastically engaged with the locking claws 4a in the locking grooves 3a. 3 and the regulating member 4 are connected to each other.

Reference numeral 5 denotes an insertion needle which is made of a metal wire such as stainless steel and has a base portion formed into an L-shaped bent portion 5a and a tip portion formed into a sharp portion 5b which can be inserted into a detection site W such as a wall surface. In this case, an insertion hole 6a is formed in the holding member 6 that can be fitted to the step peripheral surface 3c of the guide member 3, and the insertion hole 6a is formed.
The handle 5 is inserted into the handle 5 to form a seat 7 that can be brought into contact with the front end face of the handle 2. The handle 5 and the guide 3 are screwed together so that the bent portion 5a of the Holding member 6 on guide member side
Between the rear end face and the seat plate 7 on the handle member 2 side,
The holding member 6 is separated from the handle member 2 and the guide member 3.
And the insertion needle 5 can be detached and replaced.

Reference numeral 8 denotes a guide body, which is made of synthetic resin, is provided on the handle body 1 so as to be slidable back and forth, and has a needle outlet hole 8a in the center of which the insertion needle 5 protrudes and sinks. A deformation prevention cylinder 6d having a fitting hole 6b formed in the holding member 6 and an insertion hole 6c through which the insertion needle 5 can be inserted.
Of the insertion needle 5 by slidingly engaging the deformation preventing cylinder 6d with the deformation preventing hole 8b so that the deformation preventing cylinder 6d is slidably fitted in the guide body 8. At the front end of the guide body 8, a flat surface-like contact portion 8c that can contact the detection portion W is formed at the front end of the guide body 8.

Reference numeral 9 denotes an elastic body, which in this case is formed of a compression spring, and is bridged between the holding member 6 and the rear end face of the guide body 8 to urge the guide body 8 elastically in the forward sliding direction. The insertion needle 5 is configured to be immersed in the needle outlet 8a.

Reference numeral 10 denotes a lock mechanism, and the handle 1
And a switching member 11 provided rotatably at a reciprocating angle at a lock position L or a release position F in the circumferential direction, so that the guide member 8 is prevented from sliding backward by rotating the switching member 11. are doing.

In this case, as the lock mechanism 10, four slides are provided on the outer peripheral surface of the rear portion of the guide body 8, the front surface of which is a regulating surface 12 a capable of contacting the step surface 4 b of the regulating member 4 as the handle 1. Four sliding concave grooves 13 are formed between the moving convex part 12 and the adjacent sliding convex parts 12, and can be fitted into the sliding concave grooves 13 in the guide member 3 as the handle 1. An end face member which forms a guide concave portion 15 which can be fitted to the guide convex portion 14 and the sliding convex portion 12 extending in the front-rear direction, and which can be interposed between the opposing surfaces of the guide member 3 and the regulating member 4 in the switching member 11. 11a is integrally formed, and a regulating protrusion 16 that can be fitted into the sliding concave groove 13 and a fitting recess 17 that can be fitted into the sliding convex portion 12 are formed on the end face member 11a. The front surface is opposed to the rear surface of the sliding convex portion 11 at the locking position L of the switching member, and the guide body 8 slides backward. A triangular mark-shaped indicator 4c is formed on the surface of the regulating member 4 as the handle 1 so as to protrude, and a sliding hole 4d through which the guide body 8 is inserted is formed at the front of the regulating member 4. At the rear, an engaging convex portion 4e fitted to the sliding concave groove 13 and a locking concave portion 4f fitted to the sliding convex portion 12 are formed at the rear portion, and the lock position L or the release position is formed on the surface of the switching member 11. F-shaped display units 11b and 11
c is raised along with the letters LOCK and FREE.

In the release position F shown in FIG.
As shown in FIGS. 4, 6, 7, and 8, at the forward position, the sliding concave groove 13 engages with the engaging convex portion 4e formed on the regulating member 4, and the sliding convex portion engages with the locking concave portion 4f. 12 engages, the regulating surface 12a of the sliding convex portion 12 abuts on the step surface 4b, and the sliding groove 13 is opposed to the guiding convex portion 14 and the regulating convex portion 16 and the sliding convex portion is formed. Numeral 12 is opposed to the guide concave portion 15 and the regulating concave portion 17, so that in this release position F, the guide body 8 can slide backward, and when the switching member 11 is turned in the direction of the arrow in FIG. , FIGS. 3 and 5
The blocking surface 16a of the restricting convex portion 16 is opposed to the rear end surface of the sliding convex portion 12 as in the lock position of FIG.
The sliding of the guide member 8 is prevented or canceled by the reciprocating angle rotation operation of the switching member 11.

Reference numeral 18 denotes a detention mechanism. In this case, FIG.
A convex portion 18a is formed at the rear of the inner peripheral surface of the guide body 8, and two long and short concave portions 18b and 1 corresponding to the lock position L or the release position F are formed on the outer peripheral surface of the handle member 2 as the handle body 1.
8b, and a concave portion 18b
The overhanging projections 18c and 18c are formed in the vicinity of 18b, so that at the release position F in FIGS. 6 and 7, the projection 18a fits into the long recess 18b, and the imaginary line in FIGS. In the lock position L indicated by, the convex portion 18a fits in the short concave portion 18b, and the convex portion 18c fits in and out of the concave portions 18b, 18b with the reciprocating angle rotation of the switching member 11. When the switching member 11 is held in the lock position L or the release position F and the rotation operation is started, the protrusion 1
The configuration is such that the resistance of the turning operation of the switching member 11 is given by the 8a getting over the overhanging convex portions 18c.

Reference numeral 19 denotes a depth scale. In this case, FIG.
As described above, the index for the depth scale 19 is the front end face 8d of the guide body 8, and the immersion distance of the tip of the insertion needle 5 from the front end face 8d of the guide body 8 at the forward position of the guide body 8 is considered Then, on the outer peripheral surface of the guide body 8, standard wall thickness dimensions of 0, 3 mm, 6 mm, 9 mm, 12 mm, 1
Seven wall thickness scales indicating 5 mm and 18 mm are engraved, and when the guide body 8 is retracted, the position where the front end face 8 d of the guide body 8 matches the depth scale 19 is visually observed.
The projection length of the insertion needle 5 from the front end face 8d and the thickness T of the wall material W
Is configured to read.

Since this embodiment has the above configuration,
In detecting the base material S, as shown in FIGS. 13 and 14, the grip body 1 is gripped by hand, and the abutting portion 8c of the guide body 8 abuts against a wall surface of a gypsum board or the like as the detection site W, and is gripped. Body 1
When the grip body 1 is pressed toward the wall surface or the like while holding the guide member, the guide body 8 slides backward into the grip body 1 against the spring member as the elastic body 9, whereby the insertion needle 5 comes out of the needle. The insertion needle 5 is exposed and protrudes from the hole 8a, and the insertion needle 5 is inserted into a detection site W such as a wall surface by further pressing movement of the gripping body 1. At a site where there is no base material S, as shown in FIG. And so on,
In addition, in a portion where the base material is present, as shown in FIG.
The insertion of the insertion needle 5 into the wall surface or the like is felt in response to the change in insertion resistance, and the insertion stop position of the insertion needle 5 The presence or absence of the base material S can be recognized by visually confirming the position of immersion into the handle body 1, and at this time, the handle body 1 is pivoted to the lock position L or the release position F in the circumferential direction. A switching member 11 is freely provided, and a releasable lock mechanism 10 that prevents the guide body 8 from sliding backward by a rotating operation of the switching member 11.
Is provided, the reciprocating angle rotation operation of the switching member 11 can allow or prevent the guide body 8 from sliding backward during use or when not in use. Even if the guide body 8 is accidentally retracted or collides with the outside and the guide body 8 is retracted, the guide mechanism 8 is prevented from sliding backward by the lock mechanism 10, and the insertion needle 5 is moved out. It can be prevented from being exposed and protruded from the hole 8a, the danger of use can be avoided and the safety can be improved, and the locking and releasing operation is performed only by the reciprocating angle rotation operation of the switching member 11 in the circumferential direction. And the detection workability can be improved.

In this case, the handle 1 is made up of three mutually detachable members, a rear handle member 2, a middle guide member 3 and a front regulating member 4. Is fixed between the handle member 2 and the guide member 3,
The disassembly of the handle member 2 and the guide member 3 makes it easy to replace the insertion needle 5 by disassembling the handle member 2 and the guide member 3.
A plurality of sliding convex portions 12 having a front surface on a rear outer peripheral surface of the guide body 8 as a regulating surface 12a capable of contacting the handle body 1 and sliding concave grooves located between adjacent sliding convex portions 12. 13, a guide convex portion 14 extending in the front-rear direction, which can be fitted in the sliding concave groove, and a guide concave portion 15, which can be fitted in the sliding convex portion, are formed in the handle body 1; Sliding groove 1 in member 11
3 is formed with a regulating projection 16 that can be fitted into the sliding projection 3 and a fitting recess 17 that can be fitted into the sliding projection 12. Further, a sliding hole 4d through which the guide body 8 is inserted into the front of the regulating member 4. And an engaging projection 4e fitted in the sliding groove 13 and a locking recess 4f fitted in the sliding projection 12 at the rear, and the front surface of the regulating projection 16 is In the lock position L, the guide member 8 is formed on the blocking surface 16a opposite to the rear surface of the slide convex portion 12 to prevent the guide member 8 from sliding backward. The sliding concave groove 13 engages with the engaged engaging convex portion 4e and the locking concave portion 4e.
f engages the sliding protrusion 12, and the sliding protrusion 12
, And the sliding concave groove 13 is opposed to the guide convex portion 14 and the restricting convex portion 16, and the sliding convex portion 12 is opposed to the guide concave portion 15 and the restricting concave portion 17,
Therefore, in the release position F, the guide body 8 can slide backward, and when the switching member 11 is turned in the direction of the arrow in FIG. 6, the guide member 8 becomes like the lock position L in FIGS. The blocking surface 16a of the restricting convex portion 16 is opposed to the rear end surface of the sliding convex portion 12, so that the guide body 8 cannot be moved backward and reciprocally. The backward sliding of the body 8 can be prevented or released, the structure of the lock mechanism 10 can be simplified, and the locking and releasing operations can be reliably performed.

Also, in this case, since the detention mechanism 18 is provided between the handle 1 and the switching member 11 so as to restrict the reciprocating angle rotation limit of the switching member 11, the switching member for performing the reciprocating rotation operation is provided. 11 can be securely held at the lock position L and the release position F, which can prevent unexpected rotation and further enhance the safety of use. In this case, the detention mechanisms 18 can be mutually connected. Since the projections 18a and the two recesses 18b, 18b are detachable from each other, the structure of the detention mechanism can be simplified.
Is provided with a depth scale 19 for indicating the insertion depth of the insertion needle 5 on the outer peripheral surface thereof. For example, when the insertion needle 5 pierces the base material S as shown in FIG. Thickness T
Can be read, and by knowing the thickness of the wall material,
For example, know the unit price of different wall materials depending on the thickness and use it for the estimated cost of interior renovation to calculate the cost accurately,
It is possible to know the required length of the hanging material such as nails, screw nails, heatons, etc., so that it can be used as a wall thickness measuring instrument, and the flexibility of use can be increased. Since the index for the depth scale 19 is the front end face 8d of the guide body 8, the position where the depth scale 19 matches the front end face 8d of the guide body 8 is read to determine the protrusion length and the thickness of the wall material W. T is read, so that the depth scale can be easily read, and in this case,
Since the depth scale 19 is a wall thickness scale, the thickness T of the wall material W can be more easily read.

It should be noted that the present invention is not limited to the structure shown in the above-described embodiment. For example, the shapes and structures of the handle 1, the seeding member 2, the guide member 3, and the regulating member 4, the guide 8, the lock mechanism 10. The design and the like of the detention mechanism 18 are appropriately changed and designed.

[0021]

As described above, according to the first aspect of the present invention, in detecting the base material, the grip is grasped by hand, and the contact portion of the guide is used as a gypsum as a detection portion. When the handle comes into contact with the wall of a board or the like and pushes the grip toward the wall while holding the grip, the guide slides backward into the grip against the elastic body. The insertion needle protrudes from the exit hole, and the insertion needle is inserted into a detection site such as a wall surface by further pushing of the gripping body.In a region where there is no base material, the insertion needle penetrates the wall surface etc. In a certain part, the insertion needle pierces the base material after penetrating a wall surface or the like as a detection part, and further insertion becomes impossible,
By feeling the change in insertion resistance accompanying the insertion of such an insertion needle into a wall surface or the like in response, or visually checking the insertion stop position of the insertion needle with the position where the guide body is immersed in the handle body, The presence or absence of the base material will be recognized. At this time, the above-mentioned handle body will be
The three parts of the guide member and the front regulating member are detachable from each other
The insertion needle is located between the handle and the guide.
Because it is clamped and fixed, assembly and disassembly becomes easy and
By disassembling the handle member and the guide member, the insertion needle
And a switching member is provided on the handle body so as to be rotatable in a reciprocating angle at a lock position or a release position in the circumferential direction , and the guide member is slid backward by a rotation operation of the switching member. A releasable lock mechanism is provided to prevent the reciprocating angle of the switching member, so that the sliding movement of the guide body can be permitted or prevented during use or when not in use. At times, even if an operator accidentally tries to retract the guide body or collides with the outside and the guide body is retracted, the locking mechanism prevents the guide body from retreating and slides the insertion needle. It is possible to prevent the needle from being exposed and protruded from the needle outlet hole, thereby avoiding the danger of use, improving the safety, and performing the locking and releasing operations only by the reciprocating angle rotation operation of the switching member in the circumferential direction. thing Can, it is possible to improve the detection workability.

In the second aspect of the present invention, in the release position, the sliding concave groove engages with the engaging convex portion formed in the regulating member and slides into the locking concave portion in the forward position. The moving convex portion is engaged, and the regulating surface of the sliding convex portion contacts the step surface,
In addition, the sliding concave groove is opposed to the guide convex portion and the regulating convex portion, and the sliding convex portion is opposed to the guide concave portion and the regulating concave portion. Therefore, in this release position, the guide body can slide backward. And, when the switching member is rotated by an angle,
In the locked position, the blocking surface of the restricting convex portion is opposed to the rear end surface of the sliding convex portion, so that the sliding movement of the guide body is disabled. The movement can be prevented or released, the structure of the lock mechanism can be simplified, and the locking and releasing operations can be performed reliably.

According to the third aspect of the present invention, a detention mechanism is provided between the handle and the switching member, the detention mechanism being capable of restricting a reciprocating angle rotation limit of the switching member. switching member to operate can be detained securely in the locking position and release position, much to prevent accidental rotation, it is possible to increase the safety of use more, also, in the invention of claim 4, wherein Since the detention mechanism is composed of a convex portion and two concave portions that can be fitted and removed from each other, the structure of the detainment mechanism can be simplified, and in the invention according to claim 5 ,
Since the guide body is provided with a depth scale indicating the insertion depth of the insertion needle, when the insertion needle pierces the base material, the thickness of the wall material can be read, and the thickness of the wall material can be read. By knowing the thickness, for example, knowing the unit price of the wall material that varies depending on the thickness, utilizing it for the estimated cost of indoor renovation, and accurately calculating the cost, and the necessity of hanging materials such as nails, screw nails, heaton, etc. The length can be known, and therefore, it can be used for a wall thickness measurement tool, and the flexibility of use can be increased.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an embodiment of the present invention.

FIG. 2 is an overall sectional view of an embodiment of the present invention.

FIG. 3 is a partial sectional view of the embodiment of the present invention.

FIG. 4 is a partial sectional view of the embodiment of the present invention.

FIG. 5 is a cross-sectional view of a lock position according to the embodiment of the present invention.

FIG. 6 is a cross-sectional view of a release position according to the embodiment of the present invention.

FIG. 7 is a cross-sectional view of the embodiment of the present invention.

FIG. 8 is a cross-sectional view of the embodiment of the present invention.

FIG. 9 is an exploded perspective view of the embodiment of the present invention.

FIG. 10 is an exploded perspective view of the embodiment of the present invention.

FIG. 11 is an exploded perspective view of the embodiment of the present invention.

FIG. 12 is a partial side view of the embodiment of the present invention.

FIG. 13 is a side sectional view of a use state of the embodiment of the present invention.

FIG. 14 is a side sectional view of a use state of the embodiment of the present invention.

FIG. 15 is a side sectional view of a use state of the embodiment of the present invention.

[Explanation of symbols]

 W Detection site S Base material L Lock position F Release position 1 Handle body 2 Handle member 3 Guide member 4 Restriction member 4d Sliding hole 4e Engagement protrusion 4f Locking recess 5 Insertion needle 8 Guide body 8a Needle outlet hole 8c Contact portion 9 Elastic body 10 Lock mechanism 11 Switching member 12 Sliding convex portion 12a Restricting surface 13 Sliding concave groove 14 Guide convex portion 15 Guide concave portion 16 Restricting convex portion 16a Inhibiting surface 17 Fitting concave portion 18 Detention mechanism 18a Convex portion 18b Recessed portion 19 Depth scale

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G01V 9/00

Claims (5)

(57) [Claims] 1. A handle body, an insertion needle fixed to the handle body and capable of being inserted into a detection site such as a wall surface, and provided slidably forward and backward on the handle body, and the insertion needle projects and retracts. A guide body having a needle exit hole and a contact portion at a front end portion capable of contacting the detection portion; and an elasticity for urging the guide body in a forward sliding direction to retract the insertion needle into the needle exit hole. Body with the above handle
The body consists of a rear handle, a middle guide and a front
The insertion needle is made up of three mutually removable control members.
A switching member fixedly sandwiched between the handle member and the guide member, and provided on the handle body so as to be rotatable in a reciprocating angle at a lock position or a release position in a circumferential direction; and a rotating operation of the switching member. And a releasable lock mechanism for preventing the guide body from sliding backward. 2. The lock mechanism according to claim 1, wherein a plurality of sliding protrusions are provided on the outer peripheral surface of a rear portion of the guide body, the front surface of which is a regulating surface capable of contacting the handle body, and between the adjacent sliding protrusions. Forming a guide groove extending in the front-rear direction, which can be fitted in the slide groove, and a guide recess, which can be fitted in the slide protrusion, in the handle body; The switching member has a regulating protrusion that can be fitted in the sliding groove and a fitting recess that can be fitted in the sliding protrusion, and a slide in which a guide body is inserted through a front portion of the regulating member. A moving hole is formed, and at the rear, an engaging projection fitted to the sliding groove and a locking recess fitted to the sliding projection are formed, and the front surface of the regulating projection is positioned at the locking position of the switching member. underlying material detection device according to claim 1, characterized in that formed on the blocking surface that blocks retraction sliding faces the rear surface of the sliding Dototsu portion guide body in. Wherein said handle member and the base material detection according to claim 1 or 2, wherein the reciprocating angular rotation limit of said switching member formed by providing a restriction can be detained mechanism between the switching member Utensils. 4. The base material detecting device according to claim 3, wherein said detention mechanism comprises a mutually convex and concave portion and two concave portions. 5. 請 characterized by comprising providing a depth scale for displaying the insertion depth of the insertion needle to the guide body
The substrate detection tool according to any one of claims 1 to 4 .