Measuring scale with folding structure

Abstract

The utility model discloses a measuring scale with a folding structure, which relates to the technical field of measuring scales and comprises a first scale, a second scale and a third scale, a first connecting shaft is mounted on the outer wall above the first scale, the first scale is connected with the second scale through the first connecting shaft, and the second scale is connected with the third scale through the second connecting shaft. A second connecting shaft is installed on the inner wall of the lower portion of the first ruler, the first ruler is connected with a third ruler through the second connecting shaft, and scale marks are arranged on the surfaces of the first ruler, the second ruler and the third ruler. According to the measuring scale with the folding structure, a first connecting shaft and a second connecting shaft which are arranged on the first scale in an up-down staggered manner are matched with a limiting seat, so that the second scale and the third scale can be folded and limited, and the measuring scale has the folding structure; the handle capable of extending outwards and limiting is arranged in the first scale, so that a user can carry the measuring scale conveniently, and the measuring scale is convenient to carry by hand.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring rulers, in particular to a measuring ruler with a folding structure. Background Art

[0002] Surveying and mapping engineering is an engineering field that uses various measuring techniques and instruments to measure, record and analyze the earth's surface in order to obtain geographic information data and produce maps, charts or digital models. In surveying and mapping engineering, it is necessary to use corresponding measuring rulers. A measuring ruler is a tool used to measure length or distance, usually composed of scale lines and numbers or scale marks. Aligning the starting position of the measuring ruler with the starting point of the object being measured and ensuring that the ruler is parallel to the object being measured can make the measurement result accurate.

[0003] The measuring rulers currently on the market are relatively long in length for the convenience of measuring operations. The existing measuring rulers are relatively long and are mostly integrated, which makes them easy to break when carried. Therefore, we propose a measuring ruler with a folding structure. Utility Model Content

[0004] The purpose of the utility model is to provide a measuring ruler with a folding structure to solve the problems raised by the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a measuring scale with a folding structure, comprising a first scale, a second scale and a third scale, wherein a first connecting shaft is installed on the upper outer wall of the first scale, and the first scale is connected to the second scale via the first connecting shaft, a second connecting shaft is installed on the lower inner wall of the first scale, and the first scale is connected to the third scale via the second connecting shaft, and scale lines are arranged on the surfaces of the first scale, the second scale and the third scale.

[0006] Preferably, a limiting groove is provided on one side of the second ruler and the third ruler, a fixing seat is provided on a surface of one side of the first ruler close to the limiting groove, and a movable cavity is provided inside the fixing seat.

[0007] Preferably, a movable block is docked inside the movable cavity, and a guide rod connected to the inner wall of the movable cavity passes through the middle of the movable block. A spring is sleeved on the outer side of the guide rod, and both ends of the spring are respectively connected to the movable cavity and the movable block.

[0008] Preferably, the outer end of the movable block is connected to the limiting seat, and the inner wall of the limiting seat is connected to the limiting block, and the limiting block is docked inside the limiting groove.

[0009] Preferably, a mounting cavity is provided in the middle of one side of the first ruler close to the fixing seat, and mounting grooves are provided on both sides of the mounting cavity, and a docking frame is embedded and installed inside one end of the mounting groove.

[0010] Preferably, a handle is inserted inside the installation cavity, and both ends of the handle are connected to installation blocks, and the installation blocks are butt-inserted inside the installation groove.

[0011] Preferably, a limiting rod passes through the middle of the mounting block, and both ends of the limiting rod are connected to the inner wall of the mounting groove, and a magnetic block is provided on one side of the mounting block.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the measuring ruler with a folding structure can fold and limit the second ruler and the third ruler by the mutual cooperation between the first connecting axis and the second connecting axis and the limit seat which are staggered above and below the first ruler, so that the measuring ruler has a folding structure, and by arranging a handle inside the first ruler that can extend outward and limit the position, it is convenient for the user to carry it by hand, so that the measuring ruler is easy to carry by hand.

[0013] 1. The measuring scale with a folding structure first pulls the upper limit seat toward the side close to the fixed seat to the limit position, then turns the second scale 180° toward the front of the first scale through the first connecting axis to fit with the surface of the first scale, and then loosens the pulled limit seat. The loosened limit seat can automatically reset by the elastic force of the spring to limit the second scale after folding, and then pulls the lower limit seat outward to the limit position, then turns the third scale 180° toward the back of the first scale through the second connecting axis to fit with the back of the first scale, and finally loosens the pulled limit seat to fold and limit the third scale. The first connecting axis and the second connecting axis, which are staggered above and below the first scale, cooperate with the limit seat, and the second and third scales can be folded and limited, so that the measuring scale has a folding structure;

[0014] 2. When the measuring ruler with a folding structure needs to be carried, the handle inside the installation cavity is pulled outward, and as the installation block moves, the connected magnetic block and docking frame can be separated until the handle is pulled to the limit position. At this time, the handle extends out of the installation cavity, and the user can carry the measuring ruler by hand through the handle. After carrying, the handle is pushed inward so that the magnetic block and the docking frame are attracted to limit the position. By arranging a handle that can extend outward and limit the position inside the first ruler, it is convenient for the user to carry it by hand, so that the measuring ruler is easy to carry by hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the folding structure of the utility model from the left;

[0017] Figure 3 This is a schematic diagram of the folded and cutaway structure of the utility model from the left side;

[0018] Figure 4 This is a schematic diagram of the folded top view cutaway structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the main cutaway structure of the utility model.

[0020] In the figure: 1. first scale; 2. first connecting axis; 3. second scale; 4. second connecting axis; 5. third scale; 6. limit groove; 7. fixing seat; 8. movable cavity; 9. movable block; 10. guide rod; 11. spring; 12. limit seat; 13. limit block; 14. mounting cavity; 15. mounting groove; 16. docking frame; 17. handle; 18. mounting block; 19. limit rod; 20. magnetic block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a technical solution: a measuring ruler with a folding structure, comprising a first ruler 1, a second ruler 3 and a third ruler 5, a first connecting shaft 2 is installed on the upper outer wall of the first ruler 1, and the first ruler 1 is connected to the second ruler 3 through the first connecting shaft 2, a second connecting shaft 4 is installed on the lower inner wall of the first ruler 1, and the first ruler 1 is connected to the third ruler 5 through the second connecting shaft 4, and scale lines are arranged on the surfaces of the first ruler 1, the second ruler 3 and the third ruler 5.

[0023] A limiting groove 6 is provided on one side of the second scale 3 and the third scale 5. A fixed seat 7 is provided on the surface of one side of the first scale 1 close to the limiting groove 6, and a movable cavity 8 is provided inside the fixed seat 7; a movable block 9 is docked inside the movable cavity 8, and a guide rod 10 connected to the inner wall of the movable cavity 8 passes through the middle of the movable block 9, a spring 11 is sleeved on the outer side of the guide rod 10, and the two ends of the spring 11 are respectively connected to the movable cavity 8 and the movable block 9; the outer end of the movable block 9 is connected to the limiting seat 12, and the inner wall of the limiting seat 12 is connected to the limiting block 13, the limiting block 13 is docked inside the limiting groove 6, and the limiting block 13 is plug-connected to the limiting groove 6. The cross-sectional size of the movable block 9 matches the cross-sectional size of the movable cavity 8. The movable block 9 forms a telescopic structure between the spring 11 and the movable cavity 8, and the directions of the two limiting seats 12 are symmetrically arranged.

[0024] During the specific implementation, the upper limit seat 12 is first pulled to the side close to the fixed seat 7 to the limit position, and the pulled limit seat 12 drives the connected movable block 9 to move along the guide rod 10 inside the movable cavity 8, and the movable block 9 squeezes the spring 11 sleeved on the outside of the guide rod 10, and then the second scale 3 is flipped 180° to the front of the first scale 1 through the first connecting shaft 2, so that the second scale 3 and the surface of the first scale 1 fit together, and then the pulled limit seat 12 is loosened, and the loosened limit seat 12 can automatically reset to the initial position by the elastic force of the spring 11. At this time, the limit seat 12 is sleeved on the outside of the second scale 3, and the limit block 13 is inserted in the second The second scale 3 is folded and limited inside the limiting groove 6 on the scale 3, and then the limiting seat 12 below is also pulled outward to the limit position, and then the third scale 5 is flipped 180° to the back of the first scale 1 through the second connecting shaft 4, so that the third scale 5 and the back of the first scale 1 are in contact, and finally the pulled limiting seat 12 is loosened, and the loosened limiting seat 12 is automatically reset by the elastic force of the spring 11 to fold and limit the third scale 5. Through the mutual cooperation between the first connecting shaft 2 and the second connecting shaft 4 and the limiting seat 12 which are staggered up and down on the first scale 1, the second scale 3 and the third scale 5 can be folded and limited, so that the measuring scale has a folding structure.

[0025] See also Figure 1 , Figure 2 , Figure 3 and Figure 5A mounting cavity 14 is provided in the middle of one side of the first scale 1 close to the fixing seat 7, and mounting grooves 15 are provided on both sides of the mounting cavity 14, and a docking frame 16 is embedded and installed inside one end of the mounting groove 15; a handle 17 is inserted into the mounting cavity 14, and mounting blocks 18 are connected at both ends of the handle 17, and the mounting block 18 is docked and inserted inside the mounting groove 15; a limiting rod 19 runs through the middle of the mounting block 18, and both ends of the limiting rod 19 are connected to the inner wall of the mounting groove 15, and a magnetic block 20 is provided on one side of the mounting block 18, and the docking frame 16 is made of metal iron, and the magnetic block 20 and the docking frame 16 are connected by suction, and the mounting block 18 and the mounting groove 15 are connected by sliding, and the mounting blocks 18 are symmetrically distributed about the center line of the handle 17.

[0026] During specific implementation, the handle 17 in the initial state is inside the mounting cavity 14, and the magnetic block 20 and the docking frame 16 are attracted to each other. When the measuring scale needs to be carried, the handle 17 inside the mounting cavity 14 is pulled outward, and the pulled handle 17 moves stably inside the mounting groove 15 along the limiting rod 19 through the mounting blocks 18 connected at both ends, and as the mounting block 18 moves, the connected magnetic block 20 and the docking frame 16 can be separated until the handle 17 is pulled to the limit position. At this time, the handle 17 extends out of the mounting cavity 14, and the user can carry the measuring scale by hand through the handle 17. After carrying is completed, the handle 17 is pushed inward to the limit position until the magnetic block 20 and the docking frame 16 are attracted to each other, and the handle 17 can be limited. By arranging a handle 17 that can extend outward and limit the position inside the first scale 1, it is convenient for the user to carry it by hand, thereby making the measuring scale easy to carry by hand.

[0027] To sum up, when using the measuring ruler with a folding structure, the first ruler 1, the second ruler 3 and the third ruler 5 are unfolded into a horizontal rotation state, and the places that need to be measured in the surveying and mapping project can be accurately measured. When the measuring ruler is not in use, the limit seat 12 is pulled outward to the extreme position, and then the second ruler 3 is flipped 180° to the front of the first ruler 1 through the first connecting shaft 2, and the third ruler 5 is flipped 180° to the back of the first ruler 1 through the second connecting shaft 4. Finally, the pulled limit seat 12 is loosened, and the loosened limit seat 12 is automatically reset by the elastic force of the spring 11 to fold and limit the second ruler 3 and the third ruler 5. The contents not described in detail in this description belong to the existing technology known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A measuring ruler with a folding structure, comprising a first ruler (1), a second ruler (3) and a third ruler (5), characterized in that: A first connecting shaft (2) is installed on the upper outer wall of the first scale (1), and the first scale (1) is connected to a second scale (3) via the first connecting shaft (2); a second connecting shaft (4) is installed on the lower inner wall of the first scale (1), and the first scale (1) is connected to a third scale (5) via the second connecting shaft (4); and scale lines are arranged on the surfaces of the first scale (1), the second scale (3) and the third scale (5).

2. A measuring ruler with a folding structure according to claim 1, characterized in that: A limiting groove (6) is provided on one side of the second scale (3) and the third scale (5); a fixing seat (7) is provided on a surface of one side of the first scale (1) close to the limiting groove (6); and a movable cavity (8) is provided inside the fixing seat (7).

3. The measuring ruler with a folding structure according to claim 2, characterized in that: The movable cavity (8) is connected to a movable block (9) inside, and a guide rod (10) connected to the inner wall of the movable cavity (8) passes through the middle of the movable block (9), and a spring (11) is sleeved on the outer side of the guide rod (10), and the two ends of the spring (11) are respectively connected to the movable cavity (8) and the movable block (9).

4. The measuring ruler with a folding structure according to claim 3, characterized in that: The outer end of the movable block (9) is connected to a limiting seat (12), and the inner wall of the limiting seat (12) is connected to a limiting block (13), and the limiting block (13) is docked inside the limiting groove (6).

5. The measuring ruler with a folding structure according to claim 1, characterized in that: A mounting cavity (14) is provided in the middle of one side of the first scale (1) close to the fixing seat (7), and mounting grooves (15) are provided on both sides of the mounting cavity (14), and a docking frame (16) is embedded and installed inside one end of the mounting groove (15).

6. The measuring ruler with a folding structure according to claim 5, characterized in that: A handle (17) is inserted into the interior of the installation cavity (14), and both ends of the handle (17) are connected to installation blocks (18), and the installation blocks (18) are butt-inserted into the interior of the installation groove (15).

7. The measuring ruler with a folding structure according to claim 6, characterized in that: A limiting rod (19) passes through the middle of the installation block (18), and both ends of the limiting rod (19) are connected to the inner wall of the installation groove (15). A magnetic attraction block (20) is provided on one side of the installation block (18).

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