Detachable reference point long rack ruler

Abstract

A detachable datum point long frame ruler comprises a protective shell, one end of the protective shell is fixedly connected with a handheld grip, the other end of the protective shell is provided with a datum point, the middle of the protective shell is rotationally connected with a hand-cranking crank, the tail end of a measuring belt is connected into the hand-cranking crank, and a pull ring assembly is installed at the end of the measuring belt. A datum point bin is formed in one side of the protective shell, and a pull ring buckle is fixedly connected to the protective shell. The beneficial effects of the long rack ruler are that the reference point of the long rack ruler can be disassembled and sub-packaged, the long rack ruler can be conveniently used by a worker, can be stored and can be conveniently transported by the worker, the housing reinforcing ribs are installed in the long rack ruler, the strength of the housing can be increased, the wear resistance of the housing can be increased, and the anchor hook is additionally arranged on the pull ring assembly, so that the long rack ruler is convenient to assemble and disassemble. The anchor hook is convenient to fix at the starting point, and especially when a single person uses the anchor hook alone, the anchor hook is convenient to fix the starting point.

Description

Technical Field

[0001] The utility model relates to a long ruler, in particular to a long ruler with a detachable reference point. Background Art

[0002] A long ruler, also known as a long steel ruler or a long tape measure, is a measuring tool commonly used in fields such as engineering surveying and construction engineering, and has characteristics such as a long measuring range, high precision, and strong durability.

[0003] The existing Chinese patent technology 202120954260.8 discloses a lightweight frame-type long steel tape measure, including a long steel tape measure body and a placement frame. A chute and a moving groove are provided on the placement frame. The chute is communicated with the moving groove. A slider is slidably connected in the chute. A moving block is fixedly connected to the slider. The moving block is slidably connected in the moving groove. The moving block is in a semi-spherical shape. A rotating rod is rotatably connected to the slider. After the user turns the push rod on the placement frame vertically and further pushes the push rod, the slider slides in the chute. The sliding of the slider drives the moving block to slide in the moving groove. When the slider slides in the chute close to the tape position, the swinging amplitude of the human arm is small, so the speed of retracting the tape is fast. When the slider slides in the chute away from the tape position, the speed of retracting the tape is slow, which is convenient for adjusting the different speeds of retracting the tape and improving the working efficiency of the frame-type long steel tape measure.

[0004] Although in the prior art, when it is necessary to adjust the speed of retracting the steel tape of the steel tape measure, the user turns the push rod on the placement frame vertically and further pushes the push rod. The push rod drives the rotating rod to slide, the sliding of the rotating rod drives the slider to slide in the chute, and the sliding of the slider drives the moving block to slide in the moving groove. When the slider slides in the chute close to the tape position, the swinging amplitude of the human arm is small, so the speed of retracting the tape is fast. When the slider slides in the chute away from the tape position, the speed of retracting the tape is slow, which is convenient for adjusting the different speeds of retracting the tape and improving the working efficiency of the frame-type long steel tape measure. However, during its transportation and storage, its reference point cannot be disassembled, resulting in its inability to be folded and stored, wasting its transportation space and being rather inconvenient. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a long ruler with a detachable reference point for the problem in the prior art that its reference point cannot be disassembled, resulting in its inability to be folded and stored, wasting its transportation space and being rather inconvenient.

[0006] To achieve the above object, the present utility model adopts the following technical solutions: A detachable reference point long ruler, which includes a protective housing 3. One end of the protective housing 3 is fixedly connected with a hand grip 1. A reference point 4 is installed at the other end of the protective housing 3. And a hand crank 2 is rotatably connected to the middle of the protective housing 3. The end of a measuring belt 6 is connected inside the hand crank 2. A pull ring assembly 5 is installed at the end of the measuring belt 6. A reference point bin 7 is opened on one side of the protective housing 3. And a pull ring buckle 8 is fixedly connected to the protective housing 3.

[0007] Furthermore, the protective housing 3 includes a housing main body 31. A housing reinforcing rib 32 is installed inside the housing main body 31. And an outlet wear-resistant frame 33 is provided at the outlet of the protective housing 3. A reference point installation groove 35 is opened in the middle of the bottom end of the protective housing 3.

[0008] Furthermore, a metal roller 34 is also provided inside the housing main body 31.

[0009] Furthermore, the pull ring assembly 5 includes a belt card 51. A pull ring 52 is installed at one end of the belt card 51. And an anchor hook 53 is provided below the belt card 51.

[0010] Furthermore, the hand crank 2 is a foldable crank.

[0011] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows: This long ruler has at least the following advantages:

[0012] The reference point of this long ruler can be disassembled and packaged separately, which can not only facilitate the use of the staff, but also be stored, making it convenient for the staff to transport.

[0013] A housing reinforcing rib is installed inside, which can increase the strength of the housing and its wear resistance.

[0014] An anchor hook is added to the pull ring assembly. The function of the anchor hook is to facilitate fixation at the starting point, especially when used alone by one person, it is convenient to fix the starting point.

[0015] An outlet wear-resistant frame is additionally provided at its outlet to increase the wear resistance at the outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1It is a schematic structural diagram of the present utility model.

[0018] Figure 2 It is a schematic internal structure diagram of the protective housing in the present utility model.

[0019] Figure 3 It is a schematic structural diagram of the pull - ring assembly in the present utility model.

[0020] Figure 4 It is a schematic side - structure diagram of the present utility model.

[0021] Figure 5 It is a schematic structural diagram of the reference - point bin in the present utility model.

[0022] Explanation of reference numerals: Hand - held grip 1, Hand - crank 2, Protective housing 3, Reference point 4, Pull - ring assembly 5, Measuring belt 6, Reference - point bin 7, Pull - ring buckle 8, Housing main body 31, Housing reinforcing rib 32, Outlet wear - resistant frame 33, Metal roller 34, Reference - point installation groove 35, Belt card 51, Pull - ring 52, Anchor hook 53. Detailed implementation manners

[0023] Refer to Figures 1 - 5 As shown, the technical solution adopted in this detailed implementation manner is as follows: It includes a protective housing 3. One end of the protective housing 3 is fixedly connected with a hand - held grip 1. The other end of the protective housing 3 is provided with a reference point 4. And a hand - crank 2 is rotatably connected to the middle of the protective housing 3. The end of a measuring belt 6 is connected inside the hand - crank 2. The end of the measuring belt 6 is provided with a pull - ring assembly 5. A reference - point bin 7 is opened on one side of the protective housing 3. And a pull - ring buckle 8 is fixedly connected to the protective housing 3.

[0024] More specifically, the protective housing 3 includes a housing main body 31. A housing reinforcing rib 32 is installed inside the housing main body 31. And an outlet wear - resistant frame 33 is provided at the outlet of the protective housing 3. A reference - point installation groove 35 is opened in the middle of the bottom end of the protective housing 3. The housing reinforcing rib 32 can, on the one hand, play a role in strengthening the housing main body 31, and on the other hand, prevent the side of the measuring belt 6 from wearing the housing main body 31. And the outlet wear - resistant frame 33 can increase the wear resistance at its outlet.

[0025] More specifically, a metal roller 34 is also provided inside the housing main body 31. The metal roller 34 can, on the one hand, make the measuring belt 6 enter and exit more smoothly, and on the other hand, better protect the protective housing 3.

[0026] More specifically, the pull - ring assembly 5 includes a belt card 51. A pull - ring 52 is installed at one end of the belt card 51. And an anchor hook 53 is provided below the belt card 51. The function of the anchor hook 53 is to facilitate fixation at the starting point, especially when used alone by one person, it is convenient to fix the starting point.

[0027] More specifically, the hand crank 2 is a foldable crank.

[0028] The working principle of the present utility model: When in use, the staff can install its reference point 4 at the reference point installation groove 35, so that the staff can normally use this long ruler. When in use, the staff can pull its pull ring assembly 5 and measure through the measuring belt 6. When folding and storing is needed, the staff only needs to remove the reference point 4 from the reference point installation groove 35 and place it in the reference point bin 7. Then, after folding and storing the hand crank 2, the storage of this long ruler can be completed. Among them, when measuring and using, its anchor hook 53 can facilitate the fixation of its starting point.

[0029] The above is only used to illustrate the technical solution of the present utility model and not to limit it. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present utility model, as long as they do not depart from the spirit and scope of the technical solution of the present utility model, shall be covered within the scope of the claims of the present utility model.

Claims

1. A detachable reference point long ruler, characterized in that: It includes a protective housing (3), one end of the protective housing (3) is fixedly connected to a hand grip (1), a reference point (4) is installed at the other end of the protective housing (3), and a hand crank (2) is rotatably connected to the middle of the protective housing (3). The end of a measuring belt (6) is connected inside the hand crank (2), and a pull-ring assembly (5) is installed at the end of the measuring belt (6). A reference-point bin (7) is provided on one side of the protective housing (3), and a pull-ring buckle (8) is fixedly connected to the protective housing (3).

2. The split reference point long ruler according to claim 1, wherein: The protective housing (3) includes a housing main body (31). A housing reinforcing rib (32) is installed in the inner cavity of the housing main body (31), and an outlet wear-resistant frame (33) is provided at the outlet of the protective housing (3). A reference-point installation groove (35) is provided in the middle of the bottom end of the protective housing (3).

3. The split-type reference point long ruler according to claim 2, characterized in that: A metal roller (34) is further provided in the housing main body (31).

4. The split reference point long ruler according to claim 1, characterized in that: The pull-ring assembly (5) includes a belt card (51). A pull ring (52) is installed at one end of the belt card (51), and an anchor hook (53) is provided below the belt card (51).

5. The split reference point long ruler according to claim 1, wherein: The hand crank (2) is a foldable crank.

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