JP3814760B2 - Base material detector - Google Patents

Description

[0001]
BACKGROUND 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, for example, a plaster board or a plywood board.
[0002]
[Prior art]
[0003]
[Patent Document 1]
Patent No. 2524369 [Patent Document 2]
Patent No. 2986461 [0004]
Conventionally, as this kind of base material detection tool, a handle body, an insertion needle fixed to the handle body and insertable into a detection part such as a wall surface, and the handle body are provided slidably back and forth. A guide body having a needle exit hole through which the insertion needle projects and a contact portion capable of contacting the detection site at the front end portion, and urging the guide body in the forward sliding direction so that the insertion needle is moved to the needle An elastic body that is immersed in the outlet hole. In the former structure, a mounting cylinder is fitted to the gripping body at the base end portion, and a magnet is swingably provided in the mounting cylinder. In this structure, a magnet is stored in a storage chamber formed in a cap that can be inserted into the handle body or the guide body so that the magnet can take either an inclined or vertical position, and the magnet can be seen in the storage chamber. A structure formed of a material is known.
[0005]
Thus, in both the above structures, the handle body is gripped by hand, the abutting portion of the guide body is abutted against a wall surface such as a plaster board as a detection part, and the handle body is directed toward the wall surface etc. while gripping the handle body. When the is pressed, the guide body slides back into the handle body against the spring member as an elastic body, so that the insertion needle is exposed and protrudes from the needle outlet hole, and the insertion needle is further pushed by further pushing of the handle body. The insertion needle penetrates the wall surface, etc. in the part where the base material is not inserted and inserted into the detection part such as the wall surface, and in the part where the base material exists, the insertion needle is inserted after penetrating the wall surface, etc. as the detection part M. The needle pierces the base material, and insertion beyond that is impossible, and you can feel the change in insertion resistance accompanying insertion of the insertion needle into the wall surface etc., and guide the insertion stop position of the insertion needle. By visually checking the body's immersion position In which it was to recognize the presence or absence of the underlying material.
[0006]
In the former structure, when the handle body is changed and the tip of the mounting cylinder is brought close to the wall surface or the like, the base material is a metal that can be magnetically attached, or a nail or the like exists in the wall surface or the like. In the case where the magnet swings upright and the base material is a material that can be non-magnetized, or where there is no nail or the like in the wall surface, the magnet is tilted and swung. You will know the location of the metal by the movement of the posture.
[0007]
In the latter structure, if the handle body is changed and the base end portion of the handle body is brought close to the wall surface, the base material is a metal that can be magnetically attached, or a nail or the like is present in the wall surface, etc. In the case where the magnet changes from an inclined position to a vertical position, and the base material is a material that can be non-magnetized, or in a part where there is no nail or the like in the wall surface, the magnet is in an inclined position. If the cap is inserted into the guide body and the cap is placed close to the wall surface, the base material is a metal that can be magnetically attached, or a nail in the wall surface, etc. The magnet is in the vertical position from the tilted position in the part where the etc. are present, and the magnet is in the tilted position in the part where the base material is non-magnetically attachable or there is no nail or the like in the wall surface. Vertical or inclined posture movement We will know the existence location of the magnetically attached metal capable by.
[0008]
[Problems to be solved by the invention]
However, in the case of the above-described conventional structure, in the former structure, when detecting the presence of the metal, the handle must be changed. Has to be changed, or a cap has to be inserted into the guide body, and the detection workability may be lowered accordingly.
[0009]
[Means for Solving the Problems]
The present invention aims to solve such problems. Among the present inventions, the invention according to claim 1 is fixed to the handle body and to the detection site such as a wall surface. An insertion needle, a guide body that is provided on the handle body so as to be slidable back and forth, and has a needle outlet hole through which the insertion needle protrudes and retracts, and a contact portion that can come into contact with the detection site at the front end portion, A magnet having an elastic body for urging the guide body in the forward sliding direction to cause the insertion needle to be immersed in the needle outlet hole, and having a passage hole for the insertion needle in the distal end portion of the guide body Is provided so that the magnet is visible from the outside of the guide body, and the magnet is provided so as to be retracted by a magnetic force with respect to the insertion needle. In the ingredients.
[0010]
According to a second aspect of the present invention, the guide body includes a bottomed cylindrical outer guide body and a bottomed cylindrical inner guide body fitted into the outer guide body. The needle outlet hole and the contact portion are provided on the bottom wall of the front end of the inner guide, and the magnet can be slidably mounted back and forth between the bottom wall of the outer guide body and the bottom wall of the front end of the inner guide body. And a needle through hole is formed in the bottom wall of the inner guide body, and the invention according to claim 3 is provided between the needle outlet hole and the needle through hole. And a needle guide tube penetrating the passage hole.
[0011]
According to a fourth aspect of the present invention, a depth scale for displaying the insertion depth of the insertion needle is provided between the inner peripheral surface of the outer guide body and the outer peripheral surface of the inner guide body. Further, the invention according to claim 5 is provided by a switching member 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 by a rotation operation of the switch member. And a releasable lock mechanism for preventing the guide body from sliding backward.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
1 to 15 show an embodiment of the present invention, in which 1 is a handle body, which is made of a synthetic resin. In this case, the handle body 1 includes a rear handle member 2, a middle part. The grip member 2 and the guide member 3 are screwed together by screwing portions 2a and 3a, and the guide member 3 is composed of three members that are detachable from each other. The two locking grooves 3b are formed in the control member 4, and the two locking claws 4a are formed in the restricting member 4. The guide member 3 and the restricting member 4 are elastically engaged with the locking claws 4a in the locking groove 3b. And are configured to be combined.
[0013]
Reference numeral 5 denotes an insertion needle, which is made of a metal wire that can be magnetized such as stainless steel, and has a base portion formed in an L-shaped bent portion 5a and a sharp portion 5b that can be inserted into a detection site M such as a wall surface. In this case, the bent portion 5a of the insertion needle 5 is sandwiched and held by the pair of holding members 6, 7 inner surface 6a and outer surface 7a, and the flange portions 6b, 7b of the holding members 6, 7 are held by the handle member 2. The insertion needle 5 is fixed to the handle body 1 by screwing and fixing with the guide member 3, and the holding members 6 and 7 are separated and inserted by separating the handle member 2 and the guide member 3. The needle 5 is configured to be attached and detached.
[0014]
Reference numeral 8 denotes a guide body which is made of synthetic resin and is provided on the handle body 1 so as to be slidable back and forth. In this case, the guide body 8 includes a bottomed cylindrical outer guide body 9 and an outer guide body 9. The inner guide body 10 has a bottomed cylindrical shape that is integrally fitted therein. Two guide protrusions 9 a are formed on the outer peripheral surface of the outer guide body 9, and the guide protrusion is formed on the inner peripheral surface of the guide member 3. Two guide recesses 3c that can be slidably engaged with the strips 9a are formed, and the guide protrusions 9a and the guide recesses 3c are provided so that the guide body 8 can be slid forward and backward in a non-rotating state. The bottom wall 9b of the front end of the outer guide body 9 is provided with a needle outlet hole 9c into which the insertion needle 5 projects and sinks and a flat surface-shaped contact portion 9d that can contact the detection part M. A magnet 11 having a passage hole 11a of the insertion needle 5 between the front end bottom wall 10a of the guide body 10 can be slidable in the front-rear direction. And a needle passage hole 10b is formed in the bottom wall 10a of the inner guide body 10, and the outer guide body 9 and the inner guide body 10 as the guide body 8 are made of a transparent synthetic resin. 11 is provided so as to be visible from the outside of the guide body 8. In this case, as shown in FIG. 13, when the guide body 8 is moved forward, the magnet 11 is moved backward by the magnetic force with respect to the insertion needle 5, and when a metal or the like is present at the detection portion M, the magnet 11 is driven by the magnetic force with respect to the metal or the like. Will move forward. In this case, the magnet 11 is configured to be retracted by the magnetic force applied to the insertion needle 5, but may be configured to be retracted by the insertion needle and / or another member. Further, there may be a structure in which the magnet 11 can be visually recognized from the outside only at a portion corresponding to the magnet housing portion 12 of the guide body 8.
[0015]
Further, in this case, a needle guide cylinder 13 made of a brass tube passing through the passage hole 11a is installed between the needle outlet hole 9c and the needle passage hole 10b, and the inner surface of the inlet of the needle passage hole 10b is tapered. Four spring guide protrusions 10 d are formed on the inner peripheral surface of the inner guide body 10.
[0016]
Reference numeral 14 denotes an elastic body, which is composed of a compression spring in this case. The elastic body 14 is installed between the holding member 6 and the rear end surface of the inner guide body 10 of the guide body 8, and elastically biases the guide body 8 in the forward sliding direction. Thus, the insertion needle 5 is configured to be immersed in the needle outlet hole 9c.
[0017]
A lock mechanism 15 includes a switching member 16 that is provided on the handle body 1 so as to be rotatable in a reciprocating angle at a lock position L or a release position F in the circumferential direction. It is configured to prevent the body 8 from sliding backward.
[0018]
In this case, as the lock mechanism 15, the switching member 16 is fitted on the outer peripheral surface of the guide member 3, and the switching member 16 is reciprocally rotatable by sandwiching the switching member 16 between the regulating member 4 and the guide member 3. Two guide recesses 16a that can be slidably engaged with the guide protrusion 9a are formed on the inner peripheral surface of the switching member 16, and the guide body is constituted by the guide protrusion 9a, the guide recess 3c, and the guide recess 16a. 8 is provided so as to be slidable back and forth in a non-rotating state, a locking projection 16b is formed on the inner peripheral surface of the switching member 16, and the locking projection 16b is abutted on the rear outer peripheral surface of the outer guide body 9 of the guide body 8. An L-shaped blocking convex part 17 having a retreating blocking surface 17a and a protrusion regulating surface 17b that can be in contact with each other is formed, and a triangular mark-like index 4b is formed on the surface of the regulating member 4 as the handle body 1, and the switching member 11 is formed. The lock position L or the release position F The display portions 11b and 11c are formed in a raised shape together with the English characters LOCK and FREE, and the locking projection 16b and the retraction preventing surface 17a are formed at the release position F of the switching member 16 as shown in FIGS. Since the guide body 8 does not come into contact, the guide body 8 can be retracted from the forward limit position where the protrusion restricting surface 17b and the inner surface of the restricting member 4 are in contact with each other. When the guide member 8 is moved backward in the state where the switching member 16 is rotated to the lock position L at the forward movement position, the locking projection 16b and the backward movement prevention surface 17a come into contact with each other. Therefore, the sliding movement of the switching member 16 is prevented, and the backward sliding of the guide body 8 is prevented or released by the reciprocating angle turning operation of the switching member 16.
[0019]
Reference numeral 18 denotes a depth scale. In this case, the print is formed on the display sheet 19. As shown in FIG. 11, the index with respect to the depth scale 18 is the front end face 4 c of the restricting member 4, and the advance limit of the guide body 8. In consideration of the immersion distance of the distal end portion of the insertion needle 5 from the contact portion 9d as the front end surface of the guide body 8 at the position, 0, 3 mm, 6 mm, 9 mm, 12 mm, 15 mm, 18 mm, 21 mm, 24 mm, 27 mm A wall thickness scale indicating 30 mm is printed, and this display sheet 19 is attached to the outer peripheral surface of the inner guide body 10 so that the depth between the inner peripheral surface of the outer guide body 9 and the outer peripheral surface of the inner guide body 10 is increased. A scale 18 is provided, and when the guide body 8 is retracted, the matching position between the front end surface 4a of the regulating member 4 as the handle body 1 and the depth scale 19 is visually observed, and the insertion from the contact portion 9d is performed. Read the protruding length of the needle 5 and the thickness T of the wall material W It is configured to take.
[0020]
Since this embodiment is configured as described above, when the base material S is detected, the handle body 1 is grasped by hand as shown in FIGS. 14 and 15, and the contact portion 9d of the guide body 8 is used as the detection portion M. When the handle body 1 is pressed against the wall surface or the like while holding the grip body 1, the guide body 8 enters the grip body 1 against the spring member as the elastic body 14. The insertion needle 5 is exposed and protrudes from the needle outlet hole 9c, and the insertion needle 5 is inserted into the detection part M such as the wall surface by the further pressing of the grip body 1, and the base material S is not present. In FIG. 15, the insertion needle 5 penetrates the wall surface and the like, and in the portion where the base material is present, the insertion needle is grounded after penetrating the wall surface as the detection portion M as shown in FIG. The material S is pierced and no further insertion is possible. The presence or absence of the base material S can be recognized by feeling the change in insertion resistance accompanying insertion or by visually confirming the insertion stop position of the insertion needle into the handle 1 of the guide body 8. At this time, a magnet 11 having a passage hole 11a of the insertion needle 5 is slidably mounted in the front end portion of the guide body 8 and is provided so as to be visible from the outside of the guide body 9. Therefore, for example, if the base material S is a metal shape steel other than wood or the like, or if a metal material such as a nail exists in the detection portion M, the magnetic force of the magnet 11 with respect to the base material S such as metal as shown in FIG. As shown in FIG. 13, if the base material S is wood or the like, the magnet 11 is retracted by the magnetic force with respect to the insertion needle 5, but the base material S is metal or the like. And moving forward as shown in FIG. Therefore, immediately before the insertion needle 5 is inserted into the detection part M such as a wall surface by pushing the grasping body 1, the presence of metal can be visually confirmed inside the detection part M, and the difference due to the presence of metal. Damage or breakage of the insertion needle 5 can be prevented, and when there is no metal inside the detection portion M, the insertion needle 5 is inserted into the detection portion M such as a wall surface by pushing the grip 1 as it is. Thus, the presence or absence of the base material S can be recognized, the presence or absence of the metal inside the detection portion M can be confirmed, and the presence or absence of the base material S can be confirmed by a series of continuous operations. Thus, the detection workability of the base material S can be improved in a state where the damage and breakage of 5 are prevented.
[0021]
In this case, since the magnet 11 is provided so as to be retracted by the magnetic force with respect to the insertion needle 5, the structure for retracting the magnet 11 can be simplified. 8 includes a bottomed cylindrical outer guide body 9 and a bottomed cylindrical inner guide body 10 fitted into the outer guide body 9, and the bottom wall 9b at the front end of the outer guide body 9 A magnet that is provided with a needle outlet 9c and an abutting portion 9d and that can be slidable back and forth between the bottom wall 9b of the outer guide body 9 and the bottom wall 10a of the front end portion of the inner guide body 10. Since the storage portion 12 is formed and the needle passage hole 10b is formed in the bottom wall 10a of the inner guide body 10, the magnet storage portion 12 can be easily provided at the distal end portion of the guide body 8, and in this case The through hole 10b passes between the needle outlet hole 9c and the needle through hole 10b. Since the needle guide cylinder 13 is installed, the needle guide cylinder 13 can guide the sliding of the insertion needle 5 back and forth and prevent dust from entering the handle body 1 from the needle outlet hole 9c. Can do.
[0022]
Further, in this case, since a depth scale 18 for displaying the insertion depth of the insertion needle 5 is provided between the inner peripheral surface of the outer guide body 9 and the outer peripheral surface of the inner guide body 10, for example, As shown in FIG. 14, when the insertion needle 5 is pierced into the base material S, the thickness T of the wall material can be read. By knowing the thickness of the wall material, for example, different wall materials can be obtained depending on the thickness. You can know the unit price and use it for the estimated cost of indoor renovation to accurately calculate the cost, or know the required length of hanging materials such as nails, screw nails, heatons, etc. Therefore, as a wall thickness measuring tool The depth scale 18 is provided between the inner peripheral surface of the outer guide body 9 and the outer peripheral surface of the inner guide body 10, and can be used for applications. It is possible to prevent the scale 18 from being lost or damaged. A switching member 16 provided at a locking position L or a releasing position F so as to be rotatable in a reciprocating angle, and a releasable locking mechanism 15 that prevents the guide body 8 from sliding backward by a turning operation of the switching member 16. Thus, the reciprocating angle turning operation of the switching member 16 can allow or prevent the sliding movement of the guide body 8 when in use or not in use. Thus, even if the guide body 8 is to be retracted or the guide body 8 is to be retracted by colliding with the outside, the lock mechanism 15 prevents the guide body from sliding backward, and the insertion needle 5 is inserted into the needle outlet hole 9c. It is possible to prevent the protrusion from being exposed, to improve the safety by avoiding the danger of use, and to perform the locking and releasing operation only by the reciprocating angle turning operation of the switching member 16 in the circumferential direction. Can It is possible to improve the workability out.
[0023]
The present invention is not limited to the structure shown in the above embodiment. For example, the forms and structures of the handle body 1, the handle member 2, the guide member 3, and the regulating member 4, the structure of the guide body 8, and the lock mechanism 15. Etc. are designed with appropriate changes.
[0024]
【The invention's effect】
As described above, according to the present invention, when detecting the base material, the grip body is grasped by hand, and the wall surface of a gypsum board or the like using the contact portion of the guide body as the detection portion. When the handle is pushed toward the wall or the like while holding the gripping body, the guide body slides back into the gripping body against the elastic body, so that the insertion needle is exposed and protrudes from the needle outlet hole. The insertion needle is inserted into the detection part such as the wall surface by further pushing the gripping body, and in the part where there is no base material, the insertion needle penetrates the wall surface etc. After penetrating the wall surface as the detection site, the insertion needle sticks into the base material, and insertion beyond that becomes impossible, and you can feel the change in insertion resistance due to insertion of such insertion needle into the wall surface etc. The insertion stop position of the insertion needle into the handle body of the guide body By visually confirming with the insertion position, the presence or absence of the base material will be recognized. At this time, a magnet having a passage hole for the insertion needle is provided in the front end portion of the guide body so as to be slidable back and forth. For example, if the base material is a metal shape steel other than wood, or if a metal material such as a nail is present at the detection site, the magnet against the metal such as the base material is provided. The magnet is moved forward by the magnetic force, that is, if the base material is wood or the like, the magnet is moved backward, but if there is a metal or the like such as the base material, the magnet is moved forward. Immediately before the insertion needle is inserted into the detection part such as a wall surface by pushing, the presence of metal can be visually confirmed inside the detection part, and the insertion needle is prevented from being damaged or broken due to the presence of metal. Inside the detection site When there is no genus, it is possible to recognize the presence or absence of the base material by inserting the insertion needle into the detection part such as the wall surface by pushing the gripping body as it is, and confirming the presence or absence of metal inside the detection part in can confirm the presence of the base material as it is a series of continuous operation, it is possible to improve the detection workability of the base material in a state where the prevented damage and breakage of Sakomihari, further, the magnet Is provided so as to be retracted by the magnetic force with respect to the insertion needle, the structure for retracting the magnet can be simplified.
[0025]
According to a second aspect of the present invention, the guide body includes a bottomed cylindrical outer guide body and a bottomed cylindrical inner guide body fitted into the outer guide body. The needle outlet hole and abutment are provided on the bottom wall of the front end of the body, and the magnet can be slid in the back and forth direction between the bottom wall of the outer guide body and the bottom wall of the front end of the inner guide body. such because the bottom wall of the inner guide body by forming a needle through hole to form the magnet housing section, can be provided a magnet housing unit easily to the tip portion of the guide body, the invention of claim 3, wherein In this case, since the needle guide cylinder penetrating the passage hole is installed between the needle outlet hole and the needle through hole, the needle guide cylinder can guide the back and forth sliding of the insertion needle. In addition, it is possible to prevent dust from entering the handle body from the needle exit hole.
[0026]
In the invention described in claim 4, a depth scale for displaying the insertion depth of the insertion needle is provided between the inner peripheral surface of the outer guide body and the outer peripheral surface of the inner guide body. If the insertion needle pierces the base material, the thickness of the wall material can be read, and by knowing the thickness of the wall material, for example, knowing the unit price of the wall material that varies depending on the thickness, indoor renovation It can be used to estimate the cost accurately and know the required length of hanging materials such as nails, screw nails, and heatons, and can therefore be used as a wall thickness measuring tool. The depth scale is provided between the inner peripheral surface of the outer guide body and the outer peripheral surface of the inner guide body, so that the versatility of use can be increased, so that the depth scale can be prevented from being lost or damaged. can be, also, in the invention of claim 5, wherein, also the lock position in a circumferential direction in the handle body The switching member is provided at the release position so that the reciprocating angle can be freely rotated, and the releasable lock mechanism that prevents the guide body from sliding backward by the rotating operation of the switching member. By rotating, the guide body can be allowed to slide back and forth during use or when it is not in use. When not in use, an operator may try to retreat the guide body by mistake, Even if the guide body is about to be retracted due to collision, the locking mechanism prevents the guide body from sliding backward and prevents the insertion needle from being exposed through the needle outlet hole. The safety can be improved by avoiding, and the lock and release operations can be performed only by the reciprocating angle rotation operation in the circumferential direction of the switching member, and the detection workability can be improved.
[0027]
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 a partial sectional view of an embodiment of the present invention.
FIG. 3 is a partial cross-sectional view of an embodiment of the present invention.
FIG. 4 is a partial cross-sectional view of an embodiment of the present invention.
FIG. 5 is a cross-sectional view of an embodiment of the present invention.
FIG. 6 is a cross-sectional view of an embodiment of the present invention.
FIG. 7 is a partial cross-sectional view of an embodiment of the present invention.
FIG. 8 is an exploded perspective view of an embodiment of the present invention.
FIG. 9 is an exploded perspective view of an embodiment of the present invention.
FIG. 10 is an exploded perspective view of an embodiment of the present invention.
FIG. 11 is a partially enlarged front view of an embodiment of the present invention.
FIG. 12 is a partial cross-sectional view showing a usage state of the embodiment of the present invention.
FIG. 13 is a partial cross-sectional view showing a usage state of the embodiment of the present invention.
FIG. 14 is a side view of the usage example of the embodiment of the present invention.
FIG. 15 is a side view of the usage example of the embodiment of the present invention.
[Explanation of symbols]
M Detection site S Base material L Lock position F Release position 1 Handle body 5 Insert needle 8 Guide body 9 Outer guide body 9c Needle outlet 9d Abutting portion 10 Inner guide body 11 Magnet 11a Passing hole 12 Magnet housing portion 13 Needle guide Cylinder 14 Elastic body 15 Locking mechanism 16 Switching member 18 Depth scale

Claims (5)

A handle body, an insertion needle that is fixed to the handle body and that can be inserted into a detection part such as a wall surface, and a needle outlet hole and a front end that are provided in the handle body so as to be slidable back and forth and project and retract. A guide body having an abutting portion capable of abutting on the detection site, and an elastic body that urges the guide body in a forward sliding direction to immerse the insertion needle into the needle outlet hole. The guide body is provided with a magnet having a passage hole for the insertion needle in the front end portion of the guide body so as to be slidable back and forth, and the magnet is provided so as to be visible from the outside of the guide body. A base material detector, wherein the base material detector is provided so as to be retracted by a magnetic force .   The guide body includes a bottomed cylindrical outer guide body and a bottomed cylindrical inner guide body fitted into the outer guide body, and the needle guide protrudes from the bottom wall of the front end portion of the outer guide body. A hole and an abutting portion are provided, and a magnet housing portion is formed between the bottom wall of the outer guide body and the bottom wall of the front end portion of the inner guide body so that the magnet can be slidably moved back and forth. 2. A base material detector according to claim 1, wherein a needle through hole is formed in the bottom wall of the guide body.   3. The base material detector according to claim 2, wherein a needle guide tube penetrating the passage hole is provided between the needle outlet hole and the needle through hole.   The depth scale which displays the insertion depth of the said insertion needle is provided between the inner peripheral surface of the said outer guide body, and the outer peripheral surface of an inner guide body, The any one of Claims 1-3 characterized by the above-mentioned. Item 1. A base material detector according to item 1.   A switching member provided on the handle body so as to be reciprocally rotatable at a lock position or a release position in a circumferential direction; and a releasable lock mechanism that prevents the guide body from sliding backward by a turning operation of the switch member; The base material detector according to any one of claims 1 to 4, wherein the base material detector is provided.

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