Long measuring tape with tape releasing device

Abstract

The utility model discloses a long measuring tape with a tape releasing device, which comprises a shell, a tape core arranged in the shell, a tape wound outside the tape core, a cover plate fixed on the right side of the shell, a handle seat rotatably connected on the cover plate, and a crank handle connected with the handle seat. A central gear and a plurality of planetary gears meshed on the outer side of the central gear are installed in the shell, each planetary gear is in shaft connection with the crank handle, the button penetrates through the crank handle and the crank handle seat in a left-right extending mode, a spring extending left and right is installed in the left end of the shell, and the left end of the button is pressed at the right end of the spring. The button penetrates through the center gear and is in linkage with the center gear, a polygonal clamping part is arranged at the left end of the button in a protruding mode, a polygonal hole penetrating left and right is formed in the ruler core, the polygonal clamping part extends into the ruler core, and the polygonal clamping part is connected with or separated from the polygonal hole in a clamped mode. The button plays a role of a tape releasing device, and when the tape is pulled out, the hand cannot be hit by the crank handle.

Description

Technical Field

[0001] The utility model relates to a measuring tape, in particular to a long measuring tape with a measuring tape and a releasing device. Background Art

[0002] A long tape measure is a commonly used measuring tool that can measure the size and distance of a long object and is widely used in engineering measurement fields such as machinery, construction, and decoration. Conventional long tape measures with a crank handle, such as a crank-type tape measure with a grip disclosed in CN208720925U, lack a tape release device. When the tape is pulled out for use, the tape will drive the ruler core to rotate, the ruler core will drive the gear set to rotate, and the gear set will drive the crank seat and the crank handle to rotate. In other words, the crank handle will rotate with it, and the crank handle is easy to hit the hand, affecting the user's experience. Utility Model Content

[0003] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide a long tape measure with a release device.

[0004] The technical solution of the utility model is: a long tape measure with a ruler and a releasing device, comprising a shell, a ruler core is installed in the shell, a ruler tape is wound outside the ruler core, a cover plate is fixed on the right side of the shell, a crank seat is rotatably connected to the cover plate, a crank handle is connected to the crank seat, a central gear and a plurality of planetary gears meshing on the outside of the central gear are installed in the shell, each planetary gear is axially connected to the crank handle, it also includes a button, the button extends left and right through the crank handle and the crank seat, a spring extending left and right is installed in the left end of the shell, the left end of the button is pressed on the right end of the spring, the button passes through the central gear and is linked with the central gear, a polygonal clamping portion is convexly provided on the left end of the button, a polygonal hole is provided in the ruler core that passes left and right, the polygonal clamping portion extends into the ruler core, and the polygonal clamping portion is clamped or separated from the polygonal hole.

[0005] Furthermore, one end of the crank handle has a first through hole extending left to right, the crank base has a second through hole extending left to right, the button passes through the first through hole and the second through hole, and the right end of the button is exposed outside the crank base.

[0006] Furthermore, the button passes through the center gear and is linked with the center gear, which means that: the center gear has a square tenon hole that passes through the center gear from left to right, and a square tenon head is protruding from the outer wall of the button and is located on the right side of the polygonal clamping part. The square tenon head is clamped with the square tenon hole, and the center gear rotates to drive the button to rotate.

[0007] Furthermore, the left end of the central gear is used to block the right end of the polygonal clamping portion.

[0008] Furthermore, when the button is not pressed, the polygonal engaging portion is engaged with the polygonal hole; when the button is pressed and moves to the left, the polygonal engaging portion is separated from the polygonal hole.

[0009] The long tape measure with a tape release device provided by the utility model has the beneficial effect that when the tape measure is needed to be measured, before the tape measure is pulled out, the button is pressed to move the button to the left, the polygonal clamping portion is separated from the polygonal hole, so that the tape core is separated from the button, at which time the tape measure and the tape core are "released", and the tape measure, the tape core and the crank seat and the crank handle will not be linked, which is equivalent to the button playing the role of a "tape measure releasing device". When the tape measure is pulled out, the tape core rotates, and the tape core will not transmit force to the button, the crank seat and the crank handle, the crank handle will not rotate, and the crank handle will not hit the hand; when the tape measure needs to be reeled in, the button is released, and the button is reset under the elastic force of the spring, the polygonal clamping portion is clamped with the polygonal hole, and after the crank handle is turned, the crank handle drives the crank seat to rotate, the crank seat drives the planetary gear to rotate, the planetary gear drives the center gear to rotate, the center gear drives the button to rotate, and the button drives the tape core to rotate, so that the tape measure can be smoothly reeled into the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0012] Figure 3 It is an exploded schematic diagram of the utility model;

[0013] Figure 4 It is a structural schematic diagram of a button of the utility model;

[0014] Figure 5 It is a structural schematic diagram of the central gear of the utility model;

[0015] Figure 6 It is a structural schematic diagram of the ruler core of the utility model.

[0016] As shown in the figure: 1-housing, 2-rule core, 21-polygonal hole, 3-rule tape, 4-cover plate, 5-crank seat, 51-second through hole, 6-pin, 7-crank handle, 71-first through hole, 8-center gear, 81-square tenon hole, 9-planetary gear, 10-button, 101-polygonal clamping part, 102-square tenon, 11-spring. DETAILED DESCRIPTION

[0017] In order to more intuitively and completely understand the technical solution of the utility model, the following non-limiting feature description is now provided in conjunction with the accompanying drawings of the utility model:

[0018] like Figure 1 — Figure 6As shown, a long tape measure with a ruler and tape release device comprises a shell 1, a ruler core 2 is installed in the shell 1, a ruler tape 3 is wound outside the ruler core 2, a cover plate 4 is fixed on the right side of the shell 1, a crank seat 5 is rotatably connected to the cover plate 4, and a crank handle 7 is connected to the crank seat 5 through a pin 6. A central gear 8 and a plurality of planetary gears 9 meshing on the outside of the central gear 8 are installed in the shell 1, and each planetary gear 9 is axially connected to the crank handle 7, that is, the planetary gear 9 is linked with the crank handle 7. It also includes a button 10, which extends left and right through the crank handle 7 and the crank seat 5. A spring 11 extending left and right is installed in the left end of the shell 1, and the left end of the button 10 is pressed on the right end of the spring 11. The button 10 passes through the central gear 8 and is linked with the central gear 8. A polygonal clamping portion 101 is convexly provided on the left end of the button 10, and a polygonal hole 21 is provided in the ruler core 2, which passes through the ruler core 2. The polygonal clamping portion 101 extends into the ruler core 2, and the polygonal clamping portion 101 is clamped or separated from the polygonal hole 21.

[0019] like Figure 2 and Figure 3 As shown, one end of the crank handle 7 has a first through hole 71 extending from left to right, the crank base 5 has a second through hole 51 extending from left to right, the button 10 passes through the first through hole 71 and the second through hole 51, and the right end of the button 10 is exposed outside the crank base 5. The button 10 is exposed outside the crank base 5, which is convenient for pressing by hand.

[0020] like Figure 2 , Figure 4 , Figure 5 As shown, the button 10 passes through the center gear 8 and is linked with the center gear 8, which means that: the center gear 8 has a square tenon hole 81 that passes through the center gear 8 from left to right, and a square tenon 102 is protruding from the outer wall of the button 10 and is located on the right side of the polygonal clamping portion 101. The square tenon 102 is clamped with the square tenon hole 81, and the center gear 8 rotates, which drives the button 10 to rotate.

[0021] like Figure 2 As shown, the left end of the central gear 8 is used to block the right end of the polygonal clamping portion 101 so that the button 10 will not fall off.

[0022] When the button 10 is not pressed, the polygonal engaging portion 101 is engaged with the polygonal hole 21 ; when the button 10 is pressed and moves to the left, the polygonal engaging portion 101 is separated from the polygonal hole 21 .

[0023] When using, when it is necessary to measure with a tape measure, before pulling out the tape 3, press the button 10 to move the button 10 to the left, and the polygonal clamping portion 101 separates from the polygonal hole 21, so that the ruler core 2 is separated from the button 10. At this time, the tape 3 and the ruler core 2 are "released". At this time, the tape 3 and the ruler core 2 will not be linked with the crank seat 5 and the crank handle 7, which is equivalent to the button 10 playing the role of a "tape release device". When the tape 3 is pulled out, the ruler core 2 rotates, and the ruler core 2 will not transmit force to the button 10, nor will it be transmitted to the crank seat 5 and the crank handle 7, the crank handle 7 will not rotate, and the crank handle 7 will not hit the hand; when it is necessary to reel in the measuring tape 3, release the button 10, the button 10 is reset under the elastic force of the spring 11, the polygonal clamping portion 101 is clamped with the polygonal hole 21, and after the crank handle 7 is turned, the crank handle 7 drives the crank seat 5 to rotate, the crank seat 5 drives the planetary gear 9 to rotate, the planetary gear 9 drives the center gear 8 to rotate, the center gear 8 drives the button 10 to rotate, and the button 10 drives the ruler core 2 to rotate, so that the ruler tape 3 can be smoothly reeled into the housing 1.

[0024] Of course, the above are only preferred embodiments of the present invention, and the patent scope of the present invention is not limited thereto. All simple modifications and equivalent structural changes made using the description and drawings of the present invention should be included in the patent protection scope of the present invention.

Claims

1. A long tape measure with a tape release device, comprising a housing, a ruler core installed in the housing, a ruler tape wound outside the ruler core, a cover plate fixed on the right side of the housing, a crank seat rotatably connected to the cover plate, a crank handle connected to the crank seat, a central gear and a plurality of planetary gears meshing on the outside of the central gear installed in the housing, each planetary gear is axially connected to the crank handle, and the characteristics are: It also includes a button, which extends left and right through the crank handle and the crank seat. A spring extending left and right is installed in the left end of the shell. The left end of the button is pressed on the right end of the spring. The button passes through the center gear and is linked with the center gear. A polygonal clamping part is protruded on the left end of the button. A polygonal hole is provided in the ruler core which passes through the ruler core. The polygonal clamping part extends into the ruler core. The polygonal clamping part is clamped or separated with the polygonal hole.

2. A long tape measure with a release device according to claim 1, characterized in that: One end of the crank handle is provided with a first through hole which passes through left and right, the crank base is provided with a second through hole which passes through left and right, the button passes through the first through hole and the second through hole, and the right end of the button is exposed outside the crank base.

3. A long tape measure with a tape release device according to claim 1, characterized in that: The button passes through the center gear and is linked with the center gear, which means that: the center gear has a square tenon hole that passes through the center gear from left to right, and a square tenon head is protruding from the outer wall of the button and is located on the right side of the polygonal clamping part. The square tenon head is clamped with the square tenon hole, and the button is driven to rotate when the center gear rotates.

4. A long tape measure with a release device according to claim 1, characterized in that: The left end of the central gear is used to block the right end of the polygonal clamping part.

5. A long tape measure with a release device according to claim 1, characterized in that: When the button is not pressed, the polygonal clamping portion is clamped with the polygonal hole; when the button is pressed and moves to the left, the polygonal clamping portion is separated from the polygonal hole.

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