Detection ruler

Abstract

The utility model discloses a detection ruler, which relates to the technical field of building detection and comprises a fixed ruler, an extension ruler is rotatably mounted at one end of the fixed ruler, and the angle between the fixed ruler and the extension ruler is converted between 0 degree, 90 degrees, 180 degrees or 270 degrees by rotating the extension ruler; a knob is screwed on the rotating shaft between the fixed ruler and the extension ruler, and the angle between the fixed ruler and the extension ruler is locked by rotating the knob; and when the angle between the fixed ruler and the extended ruler is 0 degree and 180 degrees, at least one side surfaces of the fixed ruler and the extended ruler are flush. By adjusting different states of the detection ruler, various measurements are realized, the number of detection tools is reduced, and the detection ruler is convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of building detection, in particular to a detection ruler. Background Art

[0002] During the construction of a house, it is usually necessary to use a measuring ruler to check the flatness, horizontality, verticality or right angle of the cement wall or the ground in order to obtain more accurate construction data. The existing measuring ruler has a single structure and cannot achieve multiple tests. It requires the use of multiple tools, which results in a large number of testing tools and is very inconvenient to carry. Utility Model Content

[0003] The utility model aims to provide a detection ruler, which can realize various measurements by adjusting different states of the detection ruler, reduce the number of detection tools, and is convenient to carry.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a detection ruler, comprising a fixed ruler, one end of which is rotatably mounted with an extension ruler, and the angle between the fixed ruler and the extension ruler is converted between 0°, 90°, 180° or 270° by rotating the extension ruler; a knob is threadedly connected on a rotating shaft between the fixed ruler and the extension ruler, and the angle between the fixed ruler and the extension ruler is locked by rotating the knob; when the angle between the fixed ruler and the extension ruler is between 0° and 180°, at least one side of the two is flush.

[0005] After adopting the above structure, when detecting flatness, the angle between the fixed ruler and the extension ruler is at 0° or 180°, and the knob is tightened; the length of the detection ruler can be selectively adjusted according to the size of the surface to be detected. The surface of the fixed ruler and the extension ruler that are flush with each other is placed against the surface to be detected, and then the gap is observed, and the feeler gauge is used to detect the flatness; when detecting the right angle, the angle between the fixed ruler and the extension ruler is at 90° or 270° according to the inner angle or the outer angle, and the knob is tightened, and the above-mentioned flush surface is placed against the right angle, and the wall adhesion of the fixed ruler and the extension ruler is observed, so as to determine whether the right angle is qualified.

[0006] In order to increase the detection of levelness, a spirit level is provided on the fixed ruler.

[0007] In order to protect the extension ruler, a ruler groove is provided on the fixed ruler, and notches are provided on both sides of the ruler groove. The extension ruler can be screwed into the ruler groove from any notch. When the extension ruler is in the unfolded or folded state, one side surface of the extension ruler is flush with the notch surface of the ruler groove.

[0008] In order to achieve rapid positioning and ensure the accuracy of the detection ruler, the width of the fixed ruler and the extended ruler are consistent, and a pre-positioning structure is arranged between them. The pre-positioning structure includes a rotating piece hinged on the fixed ruler and located on one side of the slot, and a stand column is arranged on the other side of the slot relative to the rotating piece. The rotating piece is provided with a hook groove, and the hook groove is inserted into the stand column after rotating the rotating piece, and the side of the slot is closed; the outer side surface of the rotating piece is flush with the slot surface; there are two rotating pieces, which are respectively located on the slots on both sides of the ruler slot; one end of the extended ruler located on the rotating axis is a plane, and when the angle between the fixed ruler and the extended ruler is 90°, the plane fits with its corresponding rotating piece.

[0009] In order to facilitate the detection of verticality by the detection ruler, a verticality detector is provided on the side of the fixed ruler adjacent to the flat surface of the extension ruler.

[0010] In order to adjust the length of the detection ruler, a slide groove is provided on the fixed ruler along its length direction, and the rotating shaft is installed in the slide groove to slide up and down.

[0011] In order to avoid interference with the bottom of the ruler groove when the extension ruler is rotated, an arc-shaped avoidance bottom is provided at the bottom of the ruler groove to prevent the extension ruler from being rotated in.

[0012] In order to ensure more stable locking, rotating shafts are symmetrically arranged on both sides of the extension ruler. The rotating shafts are rotatably installed on the two side walls of the ruler groove respectively, and the rotating shaft on at least one side passes through the side wall and is screwed with a knob.

[0013] In order to increase friction, finger patterns are provided on the knob.

[0014] After adopting the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model provides a detection ruler that solves the technical problems in the prior art that the detection ruler has a single structure and cannot measure a variety of different items, and workers need to carry different detection tools and a large number of detection tools. The utility model realizes various measurements by adjusting different states of the detection ruler, reduces the number of detection tools, and is convenient to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a detection ruler of the utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the structure in the expanded state;

[0018] Figure 3 yes Figure 1 Schematic diagram of the structure in the middle vertical state;

[0019] Figure 4 yes Figure 2A partial enlarged view of middle A;

[0020] Figure 5 It is a schematic diagram of the bottom structure of the ruler slot;

[0021] Figure 6 yes Figure 5 A partial enlarged view of B in the middle;

[0022] Figure 7 It is a structural diagram of embodiment 4.

[0023] In the figure, 1. fixed ruler, 11. ruler slot, 15. slide slot, 2. extension ruler, 21. knob, 3. level, 4. rotating plate, 41. column, 5. verticality tester. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] The positions mentioned in this specification are based on the positions of the detection ruler of the utility model when it is working normally, and do not limit the positions during storage and transportation. They only represent relative position relationships, not absolute position relationships.

[0026] Embodiment 1:

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown together, a detection ruler includes a fixed ruler 1, one end of which is rotatably mounted with an extension ruler 2, and the angle between the fixed ruler 1 and the extension ruler 2 is converted between 0°, 90°, 180° or 270° by rotating the extension ruler 2.

[0028] A rotating shaft is fixed to one end of the extension ruler 2, and a mounting hole for rotatably mounting the rotating shaft is provided at one end of the fixed ruler 1. Through the cooperation between the rotating shaft and the mounting hole, the extension ruler 2 is rotatably mounted on one end of the fixed ruler 1. A thread is provided at one end of the rotating shaft passing through the mounting hole, and a knob 21 is screwed on the thread. The angle between the fixed ruler 1 and the extension ruler 2 is locked by rotating the knob 21. In order to facilitate the tightening of the knob 21, a finger pattern is provided on the knob 21.

[0029] When the angles between the fixed ruler 1 and the extension ruler 2 are at 0° and 180°, that is, when the fixed ruler 1 and the extension ruler 2 are in a folded or flattened state, at least one side surface of the two is flush.

[0030] When testing the flatness, set the angle between the fixed ruler 1 and the extended ruler 2 to 0° or 180°, and tighten the knob 21; according to the size of the surface to be tested, the detection ruler can be selectively adjusted to be folded or flattened. Place the flush surface of the fixed ruler 1 and the extended ruler 2 against the surface to be tested, then observe the gap and use a feeler gauge to determine whether the flatness is qualified.

[0031] When checking the right angle, the angle between the fixed ruler 1 and the extended ruler 2 is set at 90° or 270° according to the inner angle or the outer angle, ensuring that the flat surface measured above is in contact with the right angle, and tighten the knob 21 to observe the wall adhesion of the fixed ruler 1 and the extended ruler 2, so as to determine whether the right angle is qualified.

[0032] In order to increase the detection of levelness, a level 3 is provided on the side opposite to the flush surface of the fixed ruler 1. The level 3 is a bubble meter in this embodiment. When measuring the levelness, the flush surface is placed against the surface to be detected, and the bubble position is observed to determine whether it is level.

[0033] In order to facilitate the detection of verticality by the detection ruler, a verticality detector 5 is provided on the side of the fixed ruler 1 adjacent to the flat surface of the extension ruler 2. The flat surface of the fixed ruler 1 that is flush with the extension ruler 2 is placed against the surface to be measured, and then the value of the verticality detector 5 is read. The verticality detector 5 can use a gravity verticality needle, and the details can be referred to the verticality detector 5 installed on the ruler.

[0034] Embodiment 2:

[0035] In order to protect the extension ruler 2, the fixed ruler 1 is provided with a ruler groove 11 in this embodiment, and notches are respectively provided on both sides of the ruler groove 11. The extension ruler 2 can be screwed into the ruler groove 11 from any notch. When the angle between the fixed ruler 1 and the extension ruler 2 is 180°, one side surface of the extension ruler 2 is flush with the notch surface of the ruler groove 11. Thus, it can be ensured that both sides of the ruler grooves 11 on both sides are flush with the sides of the extension ruler 2.

[0036] like Figure 5 and Figure 6 As shown together, in order to avoid interference with the bottom of the ruler groove 11, the bottom of the ruler groove 11 is provided with an arc-shaped avoidance bottom to avoid the extension ruler 2 from being screwed in.

[0037] The extension ruler 2 is symmetrically provided with rotating shafts on both sides, and the rotating shafts are rotatably mounted on the two side walls of the ruler slot 11, respectively, and the rotating shaft on at least one side passes through the side wall and is screwed with a knob 21. In order to achieve stable fixation, the rotating shafts on both sides of this embodiment pass through the side wall and are screwed with a knob 21, and the fixation on both sides makes the fixation more stable.

[0038] Embodiment three:

[0039] like Figure 1 , Figure 2 and Figure 3 As shown together, this embodiment adds a pre-positioning structure on the basis of the second embodiment, so as to facilitate the angle conversion between the fixed ruler 1 and the extension ruler 2.

[0040] The width of the fixed ruler 1 and the extension ruler 2 are consistent, and a pre-positioning structure is arranged between them, which includes a rotating piece 4 hinged on the fixed ruler 1 and located on one side of the slot, and a support column 41 is arranged on the other side of the slot relative to the rotating piece 4, and a hook groove is arranged on the rotating piece 4. By rotating the rotating piece 4, the hook groove is inserted into the support column 41, so that the upper end of the slot is closed; the outer side surface of the rotating piece 4 is flush with the slot surface; so that the setting of the rotating piece 4 will not affect the flushness of the flush surface of the fixed ruler 1 and the extension ruler 2. There are two rotating pieces 4, which are respectively located on the slots on both sides of the ruler slot 11; one end of the extension ruler 2 located on the rotation axis is a plane, and when the angle between the fixed ruler 1 and the extension ruler 2 is 90°, the plane fits with the corresponding rotating piece 4.

[0041] When the angle between the fixed ruler 1 and the extension ruler 2 is 180°, the extension ruler 2 is in the unfolded state (such as Figure 2 As shown in the figure, the rotating pieces 4 on both sides of the ruler slot 11 are rotated and connected to the corresponding posts 41. Since the widths of the fixed ruler 1 and the extension ruler 2 are the same, the rotating pieces 4 are tightly attached to both sides of the extension ruler 2 at this time. Then, the knob 21 is tightened to achieve an angle of 180° between the fixed ruler 1 and the extension ruler 2.

[0042] When the angle between the fixed ruler 1 and the extended ruler 2 is at 90°, the rotating piece 4 located at the corresponding side of the plane at one end of the rotation axis of the extended ruler 2 is rotated and connected to the corresponding column 41. At this time, the plane is close to the rotating piece 4, so as to limit the extension ruler 2 and prevent the extension ruler 2 from falling. Then, the knob 21 is tightened to achieve the angle of 90° between the fixed ruler 1 and the extended ruler 2.

[0043] Embodiment 4:

[0044] like Figure 7 As shown, in order to increase the functionality of the detection ruler and adjust the total length of the extended ruler, a slide groove 15 is provided on the fixed ruler 1 along its length direction, and the rotating shaft is slidably installed in the slide groove 15. Therefore, when the length needs to be adjusted, the rotating shaft can be slid downward to adjust the length of the extended ruler 2 extending above the fixed ruler 1, so as to facilitate the adjustment of the total length of the extended ruler.

[0045] The utility model provides a detection ruler that solves the technical problems in the prior art that the detection ruler has a single structure and cannot measure a variety of different items, and workers need to carry different detection tools and a large number of detection tools. The utility model realizes various measurements by adjusting different states of the detection ruler, reduces the number of detection tools, and is convenient to carry.

[0046] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A detection ruler, characterized in that: The invention comprises a fixed ruler, one end of which is rotatably mounted with an extension ruler, and the angle between the fixed ruler and the extension ruler is switched between 0°, 90°, 180° or 270° by rotating the extension ruler; a knob is screwed on a rotating shaft between the fixed ruler and the extension ruler, and the angle between the fixed ruler and the extension ruler is locked by rotating the knob; when the angle between the fixed ruler and the extension ruler is between 0° and 180°, at least one side of the two is flush.

2. A detection ruler according to claim 1, characterized in that: A level is arranged on the fixed ruler.

3. The detection ruler according to claim 1, characterized in that: The fixed ruler is provided with a ruler groove, and notches are respectively provided on both sides of the ruler groove. The extension ruler can be screwed into the ruler groove from any notch. When the extension ruler is in an unfolded or folded state, one side surface of the extension ruler is flush with the notch surface of the ruler groove.

4. A detection ruler according to claim 3, characterized in that: The width of the fixed ruler is consistent with that of the extended ruler, and a pre-positioning structure is arranged between them, and the pre-positioning structure includes a rotating piece hinged on the fixed ruler and located on one side of the slot, and a stand column is arranged on the other side of the slot relative to the rotating piece, and a hook groove is arranged on the rotating piece, and the hook groove is inserted into the stand column by rotating the rotating piece, and the side of the slot is closed; the outer side surface of the rotating piece is flush with the slot surface; there are two rotating pieces, which are respectively located on the slots on both sides of the ruler slot; one end of the extended ruler located on the rotation axis is a plane, and when the angle between the fixed ruler and the extended ruler is 90°, the plane fits with the corresponding rotating piece.

5. The detection ruler according to claim 1, characterized in that: A verticality detector is arranged on a surface of the fixed ruler adjacent to the flush surface of the extension ruler.

6. The detection ruler according to claim 1, characterized in that: The fixed ruler is provided with a slide groove along its length direction, and the rotating shaft is slidably installed in the slide groove up and down.

7. The detection ruler according to claim 3, characterized in that: The bottom of the ruler groove is provided with an arc-shaped avoidance bottom for avoiding the extension ruler from being screwed in.

8. The detection ruler according to claim 3, characterized in that: Rotation shafts are symmetrically arranged on both sides of the extension ruler, and the rotation shafts are rotatably mounted on the two side walls of the ruler groove respectively. The rotation shaft on at least one side passes through the side wall and is screwed with the knob.

9. The detection ruler according to claim 1, characterized in that: The knob is provided with handprints.

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