JP2964079B1 - Inner measuring tool - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To prevent a slide rod 4 from slidably moving under its own weight even when a slide prevention mechanism 7 is released during measurement when a push / pull operation is not performed by hand with a simple configuration.
Provided is an innovative inner measuring tool which can prevent the sliding surface from being damaged by the tightening screw 12 by reducing the tightening of the tightening screw 12 as in the related art. An engaging recess (6) is provided on a main body (2) along the left-right direction of the main body, and a slide rod (4) is engaged with the engaging recess (6) so as to slide freely from a side end of the main body (2).
In an inner diameter measuring tool provided with a scale 5 for measuring the inner diameter on the surface of the body, a mounting portion 8 is provided on the slide rod 4, and the mounting portion 8 slides the engagement recess 6 of the main body 2 with the slide rod 4. A contact tongue piece 10 is provided to abut against the surface section 9, and the contact of the contact tongue piece 10 with the slide sliding surface section 9 causes sliding resistance. An inner radius measuring tool configured so that the sliding rod 4 does not slide due to the sliding resistance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner diameter measuring device.

[0002]

2. Description of the Related Art A conventional inner measuring instrument is generally provided with engaging recesses on the front and rear surfaces of a horizontally long main body along the left and right directions, and slide rods 4 respectively protrude from both ends of the main body 2 into the engaging recesses. The slide rod 4 is freely engaged, and a scale for measuring the inner diameter is provided on the surface of the slide rod 4.

More specifically, as shown in FIGS. 1 to 4, the slide rods 4 are provided so as to be freely slidable to the left and right.
Are a first slide rod 4A and a second slide rod 4B, and a scale 5 displaying a numerical value starting from a numerical value of the length of the main body 2 from the slide distal end to the proximal end of the first slide rod 4A.
A is provided, and a scale 5B is provided from the numerical value at the time when the first slide rod 4A protrudes maximum from the slide tip of the second slide rod 4B toward the base end. Configuration. Therefore,
For example, when measuring the inner distance between the columns, one slide rod 4 (first slide rod 4A) is slid out from the main body 2 to one side, and the tip abuts against the inner surface of one column.

When the slide protrusion of the first slide rod 4A is sufficient, the scale 5A provided on the first slide rod 4A is read with the other end of the main body 2 abutting against the inner side surface of the other pillar. Can be measured.

If the slide projection of the first slide rod 4A is not sufficient, the second slide rod 4B is further slid to the other side, and its tip is brought into contact with the inner surface of the other column. By reading the scale 5B of the two slide rods 4B, the inner diameter can be measured.

[0006]

In such a conventional inner measuring tool, a slide preventing mechanism 7 for preventing the sliding movement of the slide rod 4 is provided so as to be capable of being released.

[0007] However, in this conventional slide prevention mechanism, generally, a screw for preventing slide is simply screwed onto a slide rod and the tip of the screw is moved by tightening and rotating the screw. Alternatively, the slide rod cannot be slid by being pressed against the slide sliding surface portion of the slide rod. Conversely, the tightening screw is loosened and turned to be released and slidably movable.

Therefore, in the conventional inner measuring instrument, if the tightening screw of the slide prevention mechanism is loosened, the slide rod will inadvertently slide and protrude due to its own weight only by tilting the main body. Inadvertent slide projections are very inconvenient.

Further, if the slide rod is used so as to be pushed and pulled by hand at the time of measurement with the tightening screw being lightly tightened so that the slide rod does not move carelessly when the slide rod is not pulled by hand, this tightening is performed. Not only does the attached screw scratch the sliding surface, resulting in poor appearance, but also makes it difficult to perform a smooth sliding movement, making measurement difficult, and inferior in durability.

The present invention has found such a problem,
If the push / pull movement is not performed by hand with a simple configuration, even if the slide prevention mechanism is released during measurement, the slide rod can be prevented from slidably moving under its own weight. It is an object of the present invention to provide a revolutionary inner measuring tool which can prevent a moving surface from being damaged by a tightening screw.

[0011]

The gist of the present invention will be described with reference to the accompanying drawings.

The engaging recess 6 is formed in the main body 2 along the lateral direction of the main body.
The slide rod 4 is slidably engaged with the engagement recess 6 from the side end of the main body 2, and a scale 5 for measuring the inner diameter is provided on the surface of the slide rod 4. The slide rod 4 is provided with an attachment portion 8, and the attachment portion 8 is provided with an abutment tongue piece 10 which abuts on a slide sliding surface 9 of the engagement recess 6 of the main body 2 with the slide rod 4. A sliding resistance is generated by the contact of the piece 10 with the sliding sliding surface portion 9 so that the sliding rod 4 does not slide due to its own weight even if the main body 2 is tilted, due to its own weight . Position where the contact tongue piece 10 is provided
The slide rod 4 is provided with a fixing hole 11 and is fixed to the fixing hole 11.
Hole 11 is provided directly as screw hole 15 or provided in fastening hole 11
Tightening to prevent slide through seat plate 16 with screw holes 15
A screw 12 is screwed in, and the screw 12
Press the tongue piece 10 and slide the contact tongue piece 10
Blocks sliding movement of slide rod 4 by pressing against sliding surface 9
The rotation operation of the tightening screw 12
A slide blocking mechanism 7 that can be released
The rod 4 has a channel shape in cross section or a C shape in cross section,
Longitudinal direction, such as a shape with one surface cut along the length
The groove 13 is provided at a predetermined position.
With the abutting tongue piece 10 as the mounting portion 8
The member 14 is fitted into the escape groove 13 so that the contact tongue piece 10
It is configured so that it is slightly protruded from the
The fitting member 14 is closed at the end opening of the slide rod 4.
The inner measuring device according to the present invention, characterized in that the contact tongue piece 10 is provided on the fitting member 14 as a material .

The contact tongue piece 10 is formed in a leaf spring shape so as to be pressed against the slide sliding surface portion 9 by the action of the leaf spring, and the degree of the pressure is pushed and pulled by hand. Is set so that the slide rod 4 can slide and can be slid, and when not pushed and pulled by hand, the body 2 is tilted directly downward so that the slide rod 4 does not slide downward due to its own weight even if the body 2 is inverted. The inner measuring device according to claim 1, characterized in that:

The fitting member 14 provided with the contact tongue piece 10 is integrally formed of resin, and the screw hole 15 is formed at a position of the fitting member 14 below the contact tongue piece 10. The seat plate disposing portion 17 on which the provided seat plate 16 can be disposed is provided.
The present invention relates to the inner measuring tool according to any one of (1) and (2) .

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

The slide rod 4 is inserted into the engagement recess 6 provided in the main body 2.
Are slidably engaged with each other. However, since the contact tongue piece 10 provided on the slide rod 4 is always in contact with the slide sliding surface 9, a sliding resistance is generated. The sliding rod 4 can be slid smoothly by pushing and pulling the sliding rod 4 by hand. However, even if the main body 2 is tilted unless the force is given by hand, depending on the weight of the sliding rod 4, the sliding resistance causes the sliding rod 4 to slide. do not do.

That is, for example, a slide prevention mechanism 7 which can be released by turning the tightening screw 12 is provided.
Even if the slide prevention mechanism 7 is released by loosening the slide lever 12, the slide rod 4 does not slide inadvertently due to the sliding resistance by the contact tongue piece 10 unless the slide rod 4 is manually pulled.

Therefore, when the scale 5 is read by pulling the slide rod 4 during the measurement, the slide rod 4 does not slide by itself due to its own weight, so that the inner distance measurement can be performed easily and speedily.

Further, unlike the prior art, the distal end of the tightening screw is not directly in contact with the sliding surface, so that the sliding surface 9 is not damaged by the distal end of the tightening screw and slides well. Is also smooth and durable.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

At the center of the upper part of a horizontally long rectangular body 2 provided with a horizontal measurement reference plane 1 at the bottom, a bubble tube type level 3 for visually recognizing the level is provided. A slide rod 4 is freely provided, and a scale 5 for measuring the inner diameter is provided on the surface of the slide rod 4.

More specifically, the slide rods 4 provided so as to be freely slidable to the left and right are a first slide rod 4A and a second slide rod 4B, respectively. A scale 5A indicating a numerical value starting from the length numerical value of the main body 2 is provided.
A scale 5B starting from the numerical value at the time when the first slide rod 4A protrudes the maximum from the slide distal end to the base end of B.
And the slide rod 4 is provided with a scale 5 for measuring the inner diameter.

An engaging recess 6 in which the two slide rods 4 (4A, 4B) are flush with the front and rear surfaces of the main body 2 so as to be slidably laterally on the front and rear surfaces of the main body 2, respectively. The slide rods 4A and 4B are slidably engaged with the engagement recesses 6 provided on the front and rear surfaces, respectively, and the slide prevention mechanism 7 for preventing the slide movement of the slide rods 4A and 4B is tightened with a tightening screw 12. It is provided so that it can be released by loosening rotation operation.

In this embodiment, the slide rod 4 is provided with a mounting portion 8, and the mounting portion 8 is brought into contact with a slide sliding surface portion 9 of the engaging recess 6 of the main body 2 with the slide rod 4. A tongue piece 10 is provided, and a sliding resistance is generated by the contact of the tongue piece 10 with the slide sliding surface portion 9. Even when the main body 2 is tilted, the slide rod 4 is slid by the own weight of the slide rod 4. It is configured not to slide due to dynamic resistance.

More specifically, the contact tongue piece 10 is formed in the shape of a leaf spring, and the slide sliding surface 9 is formed by the action of a leaf spring.
By pressing and pulling the degree of repression by hand, the slide rod 4 can be slid smoothly, and the tightening screw 12 is loosened to release the slide prevention mechanism 7. However, in the case where the body 2 is not pushed and pulled by hand, the body pressure is set such that the sliding rod 4 does not slide downward depending on the weight of the sliding rod 4 even when the main body 2 is tilted right down and turned upside down.

More specifically, the contact tongue piece portion
A fastening hole 11 is provided in the slide rod 4 at the position where 10 is provided, and a fastening plate for preventing sliding is provided via a seat plate 16 having a screw hole 15 disposed in the fastening hole 11 in the fastening hole 11. A screw 12 is screwed on, and the contact tongue piece 10 is pressed by the screwing of the tightening screw 12, and the contact tongue piece 10 is strongly pressed against the slide sliding surface 9 to slide the slide rod 4. The slide prevention mechanism 7 is configured to prevent the movement.

That is, each of the slide rods 4A and 4B has a fixing hole 11 formed therein.
The seat plate 16 provided with the screw hole 15 is screwed into the fixing hole 11 and the tightening screw 12 is screwed. The tightening screw 12 is tightened and screwed, so that the slide rods 4A and 4B are formed. The contact tongue piece 10 is strongly pressed against the slide sliding surface 9 at the bottom of the engaging recess 6 to prevent the sliding movement of the slide rods 4A and 4B, and conversely, by loosening the tightening screw 12, the contact tongue piece 10 Is pressed so as to release the slide prevention mechanism 7 so that the slide rods 4A and 4B can slide against the sliding resistance of the contact tongue piece 10.

Further, the slide rod 4 is formed in a substantially channel shape in cross section, and one surface on the bottom side of the engaging concave portion 6 is cut away along the length direction to have a clearance groove 13 in the length direction. A predetermined position of the escape groove 13 is used as the mounting portion 8, and the fitting member 14 provided with the contact tongue piece 10 is inserted into the escape groove 13.
And the contact tongue piece 10 is disposed so as to protrude slightly from the clearance groove 13, and the slide tongue is engaged with the slide rod 4 in the engagement recess 6. The piece 10 is configured so as to resiliently contact the slide sliding surface 9 at the bottom of the engagement recess 6.

The fitting member 14 is connected to the slide rod 4
The contact tongue piece 10 is provided on the fitting member 14, and the fitting member 14 provided with the contact tongue piece 10 is integrally formed of resin. A seat plate 16 provided with the screw hole 15 at a position below the contact tongue piece 10 of the fitting member 14.
A seat plate disposing portion 17 capable of disposing the disposing portion is provided.

Further, stoppers 18 are respectively provided so as to be located in the escape grooves 13 and screwed so as to protrude from the slide sliding surface 9 of the main body 2. The slide rods 4A and 4B are prevented from being excessively slid by abutting against the plate 16 or the contact tongue piece 10 or the fitting member 14 provided with the contact tongue piece 10, thereby preventing one slide part 18 from sliding. The stopper portion 18 is configured to perform a function of preventing it from slipping out when it protrudes, and to perform a positioning function when the device returns and slides.

Further, a tightening screw for the slide prevention mechanism 7 is provided.
12, marks A, B, and the like for distinguishing the first slide rod 4A from the second slide rod 4B are displayed.

Therefore, in this embodiment, the seat plate 16 is engaged with the seat plate disposing portion 17 provided below the contact tongue piece portion 10 at the distal end of the fitting member 14, and this fitting is performed. The member 14 is closed and engaged with the opening at the end of the slide rod 4, and the tightening screw 12 is inserted through a fastening hole 11 provided at a position corresponding to the screw hole 15 of the seat plate 16 of the slide rod 4. And screwed into the screw hole 15.

The slide rod 4 is slidably engaged with the engagement recess 6 provided in the main body 2, but the contact tongue piece 10 provided on the slide rod 4 always has the slide slide surface 9.
The sliding rod 4 can be pushed and pulled by hand against the sliding resistance to smoothly slide, but the body 2 is tilted unless a force is applied by hand. However, depending on the own weight of the slide rod 4, the slide resistance does not cause the slide rod 4 to slide.

That is, even if the slide screw 4 is released by hand even if the tightening screw 12 is loosened to release the slide prevention mechanism 7, the slide rod is inadvertently caused by the sliding resistance of the contact tongue piece 10. 4 does not slide out.

Accordingly, when the scale 5 is read by pulling the slide rod 4 during the measurement, the slide rod 4 does not slide by itself due to its own weight, so that the inner distance measurement can be performed easily and speedily.

Further, instead of the configuration in which the tip of the tightening screw is directly in contact with the sliding surface as in the conventional example, the contact tongue piece 10 for pressing the tightening screw 12 against the sliding surface is pressed to slide the sliding surface. Since the sliding surface 9 is not damaged by the tip of the tightening screw, the sliding surface 9 is well formed, the sliding movement is smooth, and the durability is excellent.

In this embodiment, the contact tongue piece 10 is formed integrally with the fitting member 14, and the fitting member 14 is
Can be arranged at a predetermined position by closing the opening at the end, the manufacture is easy, the number of parts can be reduced, and the assembling work becomes extremely simple.

That is, in order to reduce the weight and to make the slide rod 4 have a hollow structure or a partially cut-out hollow structure in relation to the stopper part 18, the end opening of the slide rod 4 is generally closed and fitted with the closing member 14. However, since the contact tongue piece 10 can be provided at a predetermined position by integral molding using the closing member 14, the number of parts can be reduced, mounting is simplified, and mass productivity is improved. .

Also, the contact tongue piece 10 is formed by utilizing the escape groove 13 for relative sliding of the stopper 18 which is the notch.
Is brought into contact with the slide sliding surface portion 9, so that the configuration becomes simpler and excellent in practicality.

In addition, since the seat plate 16 provided with the screw holes 15 is arranged without performing burring on the fastening holes 11,
Since the production efficiency is further improved, and the seat plate 16 can be easily arranged in the positioning state on the seat plate disposing portion 17 of the fitting member 14, the structure becomes more excellent.

Further, the contact tongue piece 10 is formed into a plate spring shape by resin molding of the fitting member 14, and can be easily designed to have the above-mentioned elasticity by the material and thickness of the resin.
The slide sliding surface portion 9 can be easily designed so as not to be damaged by sliding.

In the present embodiment, since the bubble tube type level 3 is provided in the main body 2, even if the level is held by hand and floated in the air, or even if the floor surface is not somewhat horizontal, this can be easily performed. It is possible to perform highly accurate inner measurement because it can be modified and measured.In addition, since it is possible to perform accurate inner measurement even if it is held in hand and floated in the air, inner measurement can be performed very easily. It is an extremely excellent inner measuring tool.

Further, since the bottom surface of the main body 2 is used as the horizontal measurement reference plane 1 and the bubble level type 3 is provided at the upper part, it can be used as a normal horizontal measuring instrument, and is extremely excellent in practicality. In the present embodiment, the slide rod 4 is provided on both the front and rear surfaces. However, the slide rod 4 may be provided on one side, or the slide prevention mechanism 7 may not be provided. 4 may be configured to simply prevent the slide movement without permission.

[0044]

Since the present invention is constructed as described above, it is possible to prevent the slide rod from slidably moving by its own weight when it is not pushed and pulled by a simple structure. When reading the scale, the slide rod does not slide by itself due to its own weight, so that it is an epoch-making inner measuring instrument which can perform inner measuring easily and speedily.

Further , the contact tongue piece is tightened with a tightening screw.
By pressing, slide prevention using this contact tongue piece
The mechanism can be easily configured, and the tightening screw is
The sliding surfaces are less likely to be scratched because they do not touch each other.
When the id movement is smooth and it does not move
Even if the slide prevention mechanism is released during measurement, its own weight
To prevent the slide rod from sliding without permission
And the above-mentioned actions and effects are surely exhibited.
Measurement tool.

In addition, escape for relative movement of the stopper portion is performed.
The contact tongue is projected to the sliding surface using the groove
Can be easily arranged, and in the present invention
Is the end of a sliding rod provided with the fitting member provided with the contact tongue piece.
Since the closing member is used to close the opening, the number of parts is reduced.
It has been reduced, and the tongue piece has been attached to the specified position.
Extremely easy to manufacture, easy to manufacture and excellent in mass production
It is an inner measuring tool with excellent practicality.

According to the second aspect of the present invention, the slide rod can be smoothly slid by simply pushing and pulling by simply setting the degree of elasticity of the contact tongue, and is not pushed and pulled by hand. In this case, even when the main body is tilted right down and the inverted state is set, the slide rod does not slide downward due to the own weight of the slide rod, so that the above-described operation and effect can be surely exerted, thus providing an innovative inner distance measuring tool.

Further, in the invention according to the third aspect , the contact tongue piece and the fitting member are formed integrally, and the fitting plate is provided with a seat plate disposing portion for disposing the seat plate. The number of parts is reduced, the mounting of the contact tongue at a predetermined position becomes extremely simple, and the contact tongue that fulfills the above-mentioned functions and effects can be easily manufactured. It is a very practical inner measuring tool.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of this embodiment.

FIG. 2 is a front view of a state in which a first slide rod of the present embodiment is slid and protruded.

FIG. 3 is a rear view of the embodiment in a state where a first slide rod is slid out and a second slide rod is slid out.

FIG. 4 is an explanatory plan view of the present embodiment in the state shown in FIG. 3;

FIG. 5 is an enlarged explanatory plan sectional view in which a part of the embodiment is cut away.

FIG. 6 is an exploded perspective view of a main part of the present embodiment.

FIG. 7 shows a state in which the first slide rod on the left side of this embodiment releases the slide prevention mechanism, and the second slide rod on the right side presses the contact tongue piece against the slide slide surface without releasing the slide prevention mechanism. FIG. 6 is an enlarged side sectional view of a main part in a state where the second slide rod is not allowed to slide.

FIG. 8 is an explanatory rear view of the slide rod of the embodiment.

[Explanation of symbols]

 2 Body 5 Scale 6 Engagement concave part 7 Slide prevention mechanism 8 Mounting part 9 Slide sliding surface part 10 Contact tongue piece part 11 Fixing hole 12 Tightening screw 13 Escape groove 14 Engaging member (blocking member) 15 Screw hole 16 Seat Plate 17 Seat plate arrangement

Claims (3)

(57) [Claims] An engaging recess is provided in the main body along the left-right direction of the main body, and a slide rod is slidably engaged with the engaging concave portion from a side end of the main body, and the inner surface of the slide rod is used for measuring an inner set. In the inner diameter measuring tool provided with the scale of the above, a mounting portion is provided on the slide rod, and a contact tongue piece is provided on the mounting portion to abut on a slide sliding surface portion of the engagement recess of the main body with the slide rod. and causing the sliding resistance by the contact of the slide sliding surface of the contact tongue, the slide rod by also the own weight of the sliding rod by tilting the main body is configured so as not to slide moved by the sliding resistance, the person The tongue piece
A slide hole is provided in the slide rod at the position where it was provided.
Screws with the fixing holes directly or as screw holes
Tighten the screw to prevent slide through the seat plate with the mounting hole.
The contact tongue piece is screwed by the screwing of this tightening screw.
Pressing this contact tongue piece against the sliding surface
To prevent the slide rod from sliding.
The slide that can be released by turning the tightening screw
The slide rod has a channel-shaped cross section.
Shape or cross section C shape or one surface along the length direction
With a relief groove in the length direction such as a cut off shape and
Then, a predetermined position of the escape groove is used as the mounting portion, and
The fitting member provided with the tongue piece is fitted into the relief groove to make the contact.
The tongue piece is disposed so as to slightly protrude from the escape groove.
And the fitting member is connected to an end opening of the slide rod.
And the contact member is provided with the contact tongue piece.
Inner measuring instrument, characterized in that the. 2. The abutment tongue portion is formed in a leaf spring shape,
It is configured so as to abut against the slide sliding surface portion by the leaf spring action, and the slide rod can be slid by pushing and pulling the degree of resilience by hand, and when not pushing and pulling by hand, the main body is tilted directly downward. 2. The inner measuring instrument according to claim 1, wherein the elasticity is set such that the sliding rod does not slide downward depending on the weight of the sliding rod even in the inverted state. 3. A seat plate in which the fitting member provided with the contact tongue piece is integrally formed of resin, and the screw plate is provided at a position below the contact tongue piece of the fitting member. claim 1, characterized in that a seat plate arranging portion that can be arranged 1
Inner measuring instrument according to claim.