CN114877773B

CN114877773B - Tape measure structure

Info

Publication number: CN114877773B
Application number: CN202210482030.5A
Authority: CN
Inventors: 沈伯洪; 祝战钢
Original assignee: Ningbo Xinda Measuring Tools Co ltd
Current assignee: Ningbo Xinda Measuring Tools Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2023-09-29
Anticipated expiration: 2042-05-05
Also published as: CN114877773A

Abstract

The application discloses a tape measure structure, which comprises a tape measure main body, a middle core column and a tape measure core, wherein the tape measure core comprises a first end cover, a second end cover and a sleeve piece, a first limiting seat is arranged on the first end cover, a second limiting seat is arranged on the second end cover, the middle core column comprises a middle core column main body, fixing caps are fixed at two ends of the middle core column main body, each fixing cap comprises a flange part and a protruding part, a first annular tooth is arranged on the side wall of each protruding part, second annular teeth distributed in an annular mode are arranged behind the first limiting seat, and the protruding part of each fixing cap at one side of the middle core column main body is positioned in the corresponding second annular tooth. When the tape measure of the application is provided with the tape core, the tape core and the middle core column are locked by sleeving the limiting piece which is consistent with the shape of the locking groove in the locking groove formed between the first annular tooth and the second annular tooth, and further the coil springs arranged on the tape core and the middle core column are locked, so that special tools for locking the parts are omitted, and the efficiency and the safety of the tape core are greatly improved.

Description

Tape measure structure

Technical Field

The application relates to the technical field of measuring tape, in particular to a measuring tape structure.

Background

When the tape measure core is assembled in the main shell, the coil spring is firstly required to be installed in the tape measure core, and the tape is wound outside the tape measure core, but in the assembling process, because of the force of the coil spring, the coil spring and the tape core are required to be fixed in position by using special tools, and then the tape measure core is assembled in the tape measure shell. This results in a very time-consuming and laborious installation of the core.

Based on the above, there is a need for improvements over the prior art.

Disclosure of Invention

The application provides a tape measure structure aiming at the defects existing in the prior art.

The application is realized by the following technical scheme: the utility model provides a tape measure structure, includes tape measure main body, in the fixed well stem in tape measure main body and by the core of well stem pivoted support, the core includes first end cover, second end cover and the sleeve spare of connecting first end cover and second end cover, is provided with the coil spring locked groove that supplies the coil spring to fix on the sleeve spare be provided with first spacing seat on the first end cover be provided with the spacing seat of second on the second end cover, well stem includes well stem main body the both ends of well stem main body are fixed with the fixed cap, the fixed cap includes flange part and the protruding bulge of protruding establishing on the flange part with the first annular tooth is provided with on the lateral wall of bulge, is provided with the second annular tooth of annular distribution behind first spacing seat, and the bulge in the fixed cap of one side of well stem main body is located in the second annular tooth to make the locked groove between first annular tooth and the second annular tooth.

In the above technical scheme, the rear end position of the fixing cap is provided with a key slot, and two ends of the middle stem main body are provided with key shafts matched with the key slot.

In the above technical scheme, the tape measure main body includes fixed connection's last casing and lower casing be provided with first mount pad on the last casing be provided with the second mount pad on the lower casing, the fixed cap that is located well stem main body both sides is located first mount pad and second mount pad respectively, wherein be provided with on the second mount pad inner wall with the third annular tooth that first annular tooth form matches on the fixed cap.

In the technical scheme, the fixing piece for fastening the fixing caps on one side of the upper shell and the middle stem main body is arranged in the upper shell.

In the above technical scheme, the second end cover with sleeve spare integrated into one piece the circumferencial direction evenly distributed of the terminal surface of sleeve spare rear end has detained the claw the back terminal surface of first end cover go up protruding be equipped with sleeve spare shape matching's protruding seat the last catching groove that runs through with detaining claw shape matching of first end cover, the catching groove is located protruding seat lateral wall border position.

In the technical scheme, three groups of the buckling claws are arranged.

The application has the following beneficial effects: when the tape measure is provided with the tape core, the limit piece which is consistent with the shape of the locking groove can be sleeved in the locking groove formed between the first annular tooth and the second annular tooth to lock the tape core and the middle core column, and further the coil springs arranged on the tape core and the middle core column are locked, so that special tools for locking the parts are omitted, and the efficiency and the safety of the tape core are greatly improved.

Drawings

Fig. 1 is a schematic perspective view of the present application.

Fig. 2 is a schematic cross-sectional view of the present application.

Fig. 3 is a schematic diagram of the fit of the core and the center post.

Fig. 4 is an exploded view of the core and the center shank.

FIG. 5 is a schematic view of the structure of the second end cap and sleeve member of the core.

Fig. 6 is a schematic structural view of the first end cap of the core.

FIG. 7 is a schematic view of the structure of the first end cap of the core in another direction.

Fig. 8 is a schematic perspective view of the upper case.

Fig. 9 is a schematic perspective view of the lower case.

Detailed Description

The application is described in further detail below with reference to the attached drawings and detailed description: referring to fig. 1 to 9, a tape measure structure comprising a tape measure body 1, a center post 2 fixed in the tape measure body 1 and a tape core 3 rotatably supported by the center post 2, the tape core 3 comprising a first end cap 31, a second end cap 32 and a sleeve member 30 connecting the first end cap 31 and the second end cap 32, a coil spring locking groove 30a for fixing one end of a coil spring being provided on the sleeve member 30, a first stopper 31a being provided on the first end cap 31, a second stopper 32a being provided on the second end cap 32, the center post 2 comprising a center post body 20, a fixing cap 21 being fixed at both ends of the center post body 20, the fixing cap 21 comprising a flange portion 21a shape-matched with the first stopper 31a and the second stopper 32a and a convex portion 21b being provided on the flange portion 21a, a first annular tooth 101 being provided on a side wall of the convex portion 21b, a second annular tooth 102 being provided in annular distribution behind the first stopper 31a, wherein the first annular tooth 102 is formed in the second annular tooth 102 b in the annular cap body 20, and the second annular tooth 102 is formed between the first annular tooth 102 and the first annular tooth 102.

In the structure, when the tape measure is used for installing the tape core, the tape core and the middle core column are locked by the limiting piece which is sleeved in the locking groove and is consistent with the locking groove in shape and formed between the first annular tooth and the second annular tooth, and further the coil springs arranged on the tape core and the middle core column are locked, so that special tools are omitted for locking the components, and the efficiency and the safety of the tape core are greatly improved.

Specifically, a key slot is disposed at the rear end of the fixing cap 21, and key shafts matched with the key slot are disposed at two ends of the central stem body 20. The fixing cap 21 and the middle stem body 20 are integrally fixed by the cooperation of the key shaft and the key groove.

Further preferably, the tape measure body comprises an upper casing 11 and a lower casing 12 which are fixedly connected, a first mounting seat 201 is arranged on the upper casing 11, a second mounting seat 202 is arranged on the lower casing 12, fixing caps 21 positioned on two sides of the middle core column body 20 are respectively positioned in the first mounting seat 201 and the second mounting seat 202, and third annular teeth 103 matched with the first annular teeth 101 in shape on the fixing caps 21 are arranged on the inner wall of the second mounting seat 202. After the coil spring and the ruler core are fixed, the structure needs to be installed in the tape measure shell:

firstly, the integral piece of the coil spring and the ruler core (a limiting piece is sleeved in a locking groove formed between the first annular tooth and the second annular tooth) is firstly rotated along the direction of the lower shell 12, at the moment, a left side (the left side is defined by the left side in fig. 5) fixing cap 21 is installed in a second installation seat 202 arranged on the lower shell 12, and the coil spring installed on the ruler core and the middle core column is locked through the cooperation of a third annular piece 103 distributed on the inner wall of the second installation seat 202 and a first annular piece 101 on the fixing cat 21;

however, the stopper inserted into the lock groove formed between the first annular tooth and the second annular tooth at the time of the original insertion of the core is taken out, and at this time, since the coil spring and the core are already locked in the previous step, the coil spring is not released at the same time as the stopper is taken out;

finally, the upper shell 11 is aligned with the lower shell 12, so that the upper shell and the lower shell are fixed, at the moment, the fixing cat 21 at the left side enters the first mounting seat 201 of the upper shell 11, and finally, a fixing piece for fastening the upper shell 11 and the fixing cap 21 at one side of the middle stem main body 20 is arranged in the upper shell 11; at this time, both ends of the middle core column are fixed with the shell, and the positions of both ends of the middle core column are limited.

Wherein, the first mounting seat 201 is provided with a smooth side wall structure, so that the fixing cap can be aligned with the first mounting seat 201 without rotating to a specific angle;

specifically, the second end cover 32 and the sleeve member 30 are integrally formed, the fastening claws 30a are uniformly distributed in the circumferential direction of the end surface of the rear end of the sleeve member 30, the rear end surface of the first end cover 31 is convexly provided with a boss seat 31b matched with the shape of the sleeve member 30, the first end cover 31 is penetrated with a fastening groove 31c matched with the shape of the fastening claws 30a, and the fastening groove 31c is positioned at the adjacent position of the side wall of the boss seat 31 b. The locking claws 30a are provided with three groups.

The foregoing has shown and described the basic principles, principal features and advantages of the application. It will be appreciated by those skilled in the art that the application is not limited to the embodiments described above. The foregoing description of the embodiments of the application and the description will be given only of the principles of the application, and various changes and modifications can be made therein without departing from the spirit and scope of the application. Such variations and modifications are intended to be within the scope of the present application as claimed.

Claims

1. The utility model provides a tape structure, includes tape main body (1), in the interior fixed well stem (2) of tape main body (1) and by the core (3) of well stem (2) pivoted support, its characterized in that: the ruler core (3) comprises a first end cover (31), a second end cover (32) and a sleeve piece (30) for connecting the first end cover (31) and the second end cover (32), a coil spring locking groove (30 a) for fixing a coil spring is formed in the sleeve piece (30), a first limit seat (31 a) is formed in the first end cover (31), a second limit seat (32 a) is formed in the second end cover (32), the middle core column (2) comprises a middle core column main body (20), fixing caps (21) are fixed at two ends of the middle core column main body (20), the fixing caps (21) comprise flange portions (21 a) matched with the first limit seat (31 a) and the second limit seat (32 a) in shape, protruding portions (21 b) protruding on the flange portions (21 a), first annular teeth (101) are formed in the side walls of the protruding portions (21 b), second annular teeth (102) distributed in an annular mode are formed in the rear of the first limit seat (31 a), and the fixing caps (21) are located between the first annular teeth (102 b) and the second annular teeth (102) in the annular teeth (21) formed in the first annular teeth (21 b); the tape measure main body comprises an upper shell (11) and a lower shell (12) which are fixedly connected, a first mounting seat (201) is arranged on the upper shell (11), a second mounting seat (202) is arranged on the lower shell (12), fixing caps (21) positioned on two sides of the middle core column main body (20) are respectively positioned in the first mounting seat (201) and the second mounting seat (202), third annular teeth (103) matched with the first annular teeth (101) on the fixing caps (21) in shape are arranged on the inner wall of the second mounting seat (202), fixing pieces for fastening the upper shell (11) and the fixing caps (21) on one side of the middle core column main body (20) are arranged in the upper shell (11), buckling claws (30 a) are uniformly distributed in the circumferential direction of the end faces of the rear ends of the sleeve pieces (30), protruding seats (31 b) matched with the shapes of the sleeve pieces (30) are arranged on the rear end faces of the first end covers (31) in a protruding mode, and the protruding seats (31 b) are arranged on the side walls (31) adjacent to the protruding seats (31 c) in the positions, and the protruding seats (31 c) are adjacent to the side walls (31 b).

2. A tape measure construction according to claim 1 wherein: the rear end position of the fixing cap (21) is provided with a key groove, and two ends of the middle core column main body (20) are provided with key shafts matched with the key groove.

3. A tape measure construction according to claim 2 wherein: the buckling claw (30 a) is provided with three groups.