CN214666442U

CN214666442U - Tape measure convenient for measuring internal dimension

Info

Publication number: CN214666442U
Application number: CN202120684357.1U
Authority: CN
Inventors: 朱永理; 马晓强
Original assignee: Ningbo Oubo Hardware Industrial Co ltd
Current assignee: Ningbo Oubo Hardware Industrial Co ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2021-11-09
Anticipated expiration: 2031-04-02

Abstract

The utility model discloses a tape measure convenient for measuring internal dimensions, which comprises a shell, wherein the top position of the rear end of the shell is fixed with a transparent window, a tape core is fixed in the shell, a tape is wound outside the tape core, the front end opening of the shell is used for extending the tape core, the tape core is positioned at the rear position in the shell, the tape core is wound outside the tape core in a mode that a concave surface faces outwards, the rear position in the shell is also fixed with a roller component positioned above the tape core, the roller component is positioned below the transparent window, a roller positioned in front of the tape core is arranged at the middle position in the shell, and the tape is wound from the lower end of the roller after being wound from the upper end of the roller component; the top of transparent window is equipped with one and controls the outer scale marking that extends, and the bottom is equipped with one and controls the interior scale marking that extends and align outer scale marking and set up. The utility model discloses can eliminate the precision error that causes because of the printing error of positive and negative scale effectively, can the accurate scale that reads, eliminate because the reading error that the sight incline caused.

Description

Tape measure convenient for measuring internal dimension

Technical Field

The utility model relates to a tape measure, specifically say a make things convenient for inside dimensional measurement's tape measure.

Background

In the application scenario of tape measure, the measurement of the internal dimension is a frequently used scenario, such as the measurement of the internal dimension of a room. When the internal dimension of a common tape measure is measured, the tape measure is generally required to be bent at a corner to read the scale, so that inaccurate measurement is easily caused. Or the back of the measuring tape is required to be leaned against the wall surface, and then the scale value of the front end of the measuring tape is read and the length of the shell is added to obtain the accurate inner dimension, so that the problem of troublesome measurement is caused. At present there is also the design tape measure of being exclusively used in inside dimensions measurement, generally all need print the scale at the front and the back of tape measure, the positive and negative two sides of tape measure are concave surface and convex surface respectively, the concave surface is inwards, the convex surface is outwards, open transparent window at the top of tape measure shell, the tape measure breaks away from the transparent window through the top earlier behind the chi core, the opening of casing front end is guided to the recess that the rethread set up in the casing inside, through reading the scale at the tape measure back on the transparent window, obtain inside size, the tape measure of this kind of working method needs double-sided printing, the degree of accuracy of measurement is directly influenced to the inconsistency of positive and negative scale.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks of the prior art, the present invention is directed to: a tape measure is provided that facilitates internal dimensional measurements.

The technical solution of the utility model is that: a tape measure convenient for measuring internal dimensions comprises a shell, wherein a transparent window is fixed at the top of the rear end of the shell, a tape core is fixed in the shell, a tape is wound outside the tape core, and an opening at the front end of the shell is used for the tape to extend out;

the ruler core is positioned at the inner rear end position of the shell, the ruler belt is provided with a concave surface, the ruler belt is wound outside the ruler core in a mode that the concave surface faces outwards, a roller assembly positioned above the ruler core is further fixed at the inner rear end position of the shell, the roller assembly is positioned below the transparent window, a roller positioned in front of the ruler core is installed at the middle position in the shell, and the ruler belt bypasses from the lower end of the roller after bypassing the upper end of the roller assembly;

the top of transparent window is equipped with one and controls the outer scale marking that extends, and the bottom is equipped with one and controls the interior scale marking that extends and align outer scale marking and set up.

Further, the roller component comprises roller frames fixed on the inner walls of the left side and the right side of the shell and a plurality of rollers rotatably connected between the two roller frames, and the tape passes around each roller.

Furthermore, the inner sides of the two roller shaft frames are provided with a plurality of convex columns, and the left end and the right end of each roller shaft are sleeved outside the corresponding convex columns and are in rotating fit with the convex columns.

Further, all have the fixed column on the both ends inner wall about the shell, the fixed column has the jack, and both ends all have protruding axle about the gyro wheel, and the protruding axle inserts behind the corresponding jack for gyro wheel and fixed column normal running fit.

Further, the tape is separated from the core and then passes between the transparent window and the roller assembly.

Furthermore, the top of shell has a mounting hole, has the recess on the inner wall of mounting hole, has the sand grip on the outer wall of transparent window, and the sand grip is gone into in the recess.

Use the utility model provides a make things convenient for inside dimensional measurement's tape measure, its beneficial effect is: the scale belt is not required to be printed with scale marks on both sides, and only the scale marks are required to be printed on the concave surface of the scale belt, so that the precision error caused by the printing error of the scale on the front side and the back side can be effectively eliminated; when data are measured and read, as long as the outer scale mark line, the inner scale mark line and the scale line of the ruler belt are overlapped, scales can be accurately read, and reading errors caused by the deviation of sight lines are eliminated.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic cross-sectional view taken along the line A-A in FIG. 3;

FIG. 5 is an exploded view of the roller assembly of the present invention;

fig. 6 is a schematic view of the mounting of the transparent window and the housing of the present invention;

fig. 7 is a schematic structural view of a transparent window of the present invention;

fig. 8 is another schematic view of the transparent window of the present invention.

Shown in the figure: the ruler comprises a shell, 11 fixing columns, 111 inserting holes, 12 mounting holes, 121 grooves, 13 left shells, 14 right shells, 2 transparent windows, 21 protruding strips, 3 ruler cores, 4 ruler belts, 41 concave surfaces, 5 rolling shaft assemblies, 51 rolling shaft frames, 511 protruding columns, 52 rolling shafts, 6 rolling wheels, 61 protruding shafts, 7 outer scale marks and 8 inner scale marks.

Detailed Description

For a more intuitive and complete understanding of the technical solution of the present invention, the following non-limiting characteristic description is now performed by combining the drawings of the present invention:

as shown in fig. 1-8, a tape measure convenient for measuring internal dimensions comprises a housing 1, a transparent window 2 is fixed at the top of the rear end of the housing 1, a tape core 3 is fixed in the housing 1, a tape 4 is wound outside the tape core 3, and the front end of the housing 1 is provided with an opening for the tape 4 to extend out;

the ruler core 3 is positioned at the inner rear end position of the shell 1, the ruler belt 4 is provided with a concave surface 41, the ruler belt 4 is wound outside the ruler core 3 in a mode that the concave surface 41 faces outwards, a roller component 5 positioned above the ruler core 3 is further fixed at the inner rear end position of the shell 1, the roller component 5 is positioned below the transparent window 2, a roller 6 positioned in front of the ruler core 3 is installed at the middle position in the shell 1, and the ruler belt 4 bypasses from the upper end of the roller component 5 and then bypasses from the lower end of the roller 6;

the top of transparent window 2 is equipped with one and controls the outer scale marking 7 that extends, and the bottom is equipped with one and controls the interior scale marking 8 that extends and align outer scale marking 7 and set up.

As shown in FIG. 5, the roller assembly 5 includes roller frames 51 fixed to the inner walls of the left and right sides of the casing 1 and a plurality of rollers 52 rotatably connected between the roller frames 51, and the tape 4 is wound around each roller 52. In order to facilitate the installation of the roller 52, the inner sides of the two roller frames 51 are respectively provided with a plurality of convex columns 511, and the left and right ends of the roller 52 are sleeved outside the corresponding convex columns 511 and are in rotating fit with the convex columns 511.

As shown in fig. 4, in order to facilitate installation of the roller 6, the inner walls of the left and right ends of the housing 1 are provided with fixing posts 11, the fixing posts 11 are provided with insertion holes 111, the left and right ends of the roller 6 are provided with protruding shafts 61, and after the protruding shafts 61 are inserted into the corresponding insertion holes 111, the roller 6 is rotatably engaged with the fixing posts 11.

As shown in fig. 2, the tape 4 is separated from the core 3, passes between the transparent window 2 and the roller assembly 5, bypasses the roller 6, and finally extends out of the opening at the front end of the casing 1.

As shown in fig. 6, in order to facilitate the installation of the transparent window 2, the top of the housing 1 has an installation hole 12, a groove 121 is formed on the inner wall of the installation hole 12, a protrusion 21 is formed on the outer wall of the transparent window 2, and the protrusion 21 is inserted into the groove 121. The shell 1 is formed by splicing a left shell 13 and a right shell 14, and the transparent window 2 is convenient to mount.

The utility model provides a convenient internal dimension measuring tape, it need not print the scale mark on the two sides of the tape 4, only need to print the scale mark on the concave 41 of the tape 4, can eliminate the precision error caused by the printing error of the front and back scale effectively; when data are measured and read, the scales can be accurately read only by ensuring that the outer scale mark 7, the inner scale mark 8 and the scale mark of the tape 4 are overlapped, and reading errors caused by the deviation of sight lines are eliminated.

It is to be understood that the foregoing is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, which is defined by the following claims and drawings.

Claims

1. The utility model provides a make things convenient for inside dimensional measurement's tape measure, includes the shell, and the rear end top position of shell is fixed with a transparent window, and the shell internal fixation has the chi core, and the chi core is outer to be rolled up there is the chi area, and shell front end opening supplies the chi area to stretch out its characterized in that:

the ruler core is positioned at the inner rear end position of the shell, the ruler tape is wound outside the ruler core in a mode that the concave surface faces outwards, a roller assembly positioned above the ruler core is further fixed at the inner rear end position of the shell, the roller assembly is positioned below the transparent window, a roller positioned in front of the ruler core is installed at the middle position in the shell, and the ruler tape bypasses from the lower end of the roller after bypassing from the upper end of the roller assembly;

2. A tape measure for facilitating internal dimensional measurements as claimed in claim 1 wherein: the roller component comprises roller frames fixed on the inner walls of the left side and the right side of the shell and a plurality of rollers rotatably connected between the two roller frames, and the tape passes around each roller.

3. A tape measure for facilitating internal dimensional measurements as claimed in claim 2 wherein: the inner sides of the two roller shaft frames are respectively provided with a plurality of convex columns, and the left end and the right end of each roller shaft are sleeved outside the corresponding convex columns and are in rotating fit with the convex columns.

4. A tape measure for facilitating internal dimensional measurements as claimed in claim 1 wherein: all have the fixed column on the both ends inner wall about the shell, the fixed column has the jack, and both ends all have protruding axle about the gyro wheel, and protruding axle inserts behind the corresponding jack for gyro wheel and fixed column normal running fit.

5. A tape measure for facilitating internal dimensional measurements as claimed in claim 1 wherein: the tape is separated from the tape core and then passes through the transparent window and the roller component.

6. A tape measure for facilitating internal dimensional measurements as claimed in claim 1 wherein: the top of shell has a mounting hole, has the recess on the inner wall of mounting hole, has the sand grip on the outer wall of transparent window, and the sand grip card is gone into in the recess.