A right angle rule for checking

Abstract

The utility model relates to a set square, specifically is a right angle set square for detection, including the shell and the rotation installation in the shell of a plurality of thicknesses increase gradually and mutually stack's right angle ruler piece, the two sides of right angle ruler piece close with the shell rotation connection all are formed with arc clamping slot, still include a plurality of with right angle ruler piece one -to -one corresponding elastic card mechanism, elastic card mechanism and arc clamping slot joint cooperation to when right angle ruler piece turns out the shell or retracts the shell, the position fixed relative to the shell, unlocking piece, with elastic card mechanism cooperation, when unlocking piece triggers unlocking, elastic card mechanism separates from arc clamping slot. Through the elastic card mechanism that sets up realizes right angle ruler piece when turning out the shell and using, can keep the stability of right angle ruler piece relative to the shell, when using right angle ruler piece and carrying out clearance measurement, can keep the stability of right angle ruler piece operation.

Description

Technical Field

[0001] This utility model relates to a feeler gauge, specifically a right-angle feeler gauge for testing. Background Technology

[0002] A feeler gauge is made of thin steel sheets and consists of several gauge pieces (rulers) of different thicknesses. It is mainly used to check the gap between two mating surfaces, hence it is also called a "feeler gauge" or "seam gauge." Each gauge piece is marked with its thickness in millimeters.

[0003] The following technical limitations exist in feeler gauges used for APA probe gap detection: First, traditional feeler gauges are all rigid straight pieces; second, in engineering testing practice, because the straight piece structure cannot closely fit the curved surface contour, the testing personnel need to manually bend the straight piece to achieve effective measurement. This structural characteristic not only reduces testing efficiency, but also poses a risk of measurement error due to improper bending.

[0004] Secondly, even if a feeler gauge with a certain angle is used for measurement, the existing feeler gauges are generally directly installed in the gauge housing with a rotating shaft. The feeler gauge is prone to relative rotation with respect to the gauge housing. Especially when testing complex equipment, the rotation of the feeler gauge relative to the gauge housing makes it inconvenient to perform fixed-point testing. Utility Model Content

[0005] The purpose of this invention is to provide a right-angle feeler gauge for testing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a right-angle feeler gauge for testing, comprising a gauge housing and a plurality of right-angle feeler plates of progressively increasing thickness and stacked on top of each other, rotatably mounted within the gauge housing; each right-angle feeler plate has an arc-shaped groove formed on both sides near its rotatable connection with the gauge housing; it also includes an elastic locking mechanism, which engages with the arc-shaped groove to fix the position of the right-angle feeler plate relative to the gauge housing when it rotates out of or retracts from the gauge housing; and an unlocking component, which cooperates with the elastic locking mechanism, such that when the unlocking component triggers unlocking, the elastic locking mechanism disengages from the arc-shaped groove.

[0007] The right-angle feeler gauge for testing as described above: the elastic locking mechanism includes: a U-shaped sliding frame and a circular limiting block fixed thereto, the U-shaped sliding frame passing through the gauge shell and being able to slide relative to the gauge shell; a spring, placed inside the gauge shell and located inside the U-shaped sliding frame, the two ends of the spring being connected to the circular limiting block and the inner wall of the gauge shell respectively.

[0008] The right-angle feeler gauge for testing as described above: the unlocking component includes: a squeezing pusher that is slidably mounted on the side end of the gauge housing, the end of the squeezing pusher having an inclined squeezing portion, the inclined squeezing portion being inserted into a through groove formed on the U-shaped sliding frame and abutting against an inclined pressure portion formed in the through groove.

[0009] As described above, the right-angle feeler gauge for testing has a strip-shaped groove formed on the extrusion pusher, and a U-shaped limiting member fixed on the gauge shell passes through the strip-shaped groove so that the extrusion pusher can slide relative to the gauge shell in a specific direction.

[0010] The right-angle feeler gauge for testing as described above: the extrusion pusher is also fixed with a pushing part, which is arranged in a trapezoidal shape.

[0011] The right-angle feeler gauge used for testing as described above: the width of the plurality of right-angle gauge pieces is 20mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the elastic locking mechanism ensures the stability of the right-angle ruler relative to the ruler shell when it is rotated out of the shell for use. When using the right-angle ruler for gap measurement, the stability of the right-angle ruler operation is maintained. Especially in the space-constrained environment of nuclear power equipment, the high operational stability can effectively improve the measurement efficiency. At the same time, setting the feeler gauge to a right-angle shape can be effectively used for measurement with APA vibration probes, effectively conforming to the curved surface contour and improving the measurement accuracy.

[0013] It should also be noted that when the right-angle ruler is retracted into the ruler case, it is also restricted by the elastic locking mechanism to ensure that it will not become loose during carrying. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a right-angle feeler gauge for testing; Figure 2 A schematic diagram showing the structure of a right-angle feeler gauge after one of the gauge pieces has been rotated out; Figure 3 A schematic diagram illustrating the structure of a right-angle feeler gauge used to test the angle of a ruler after one piece of the gauge has been rotated out. Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 A schematic diagram showing the separation state of a right-angle feeler gauge when it is pressed and pushed, and when the elastic locking mechanism separates from the gauge housing. Figure 6 for Figure 5 Enlarged view of the structure at point B; Figure 7 This is a schematic diagram showing the structure after the casing of a right-angle feeler gauge has been removed. Figure 8 for Figure 7 Enlarged view of the structure at point C; Figure 9 A schematic diagram showing the separation state of the extrusion pusher and the elastic locking mechanism in a right-angle feeler gauge for testing. Figure 10 A schematic diagram showing the connection status between the circular limit block and the U-shaped sliding frame in a right-angle feeler gauge for testing.

[0015] In the figure: 1-ruler shell, 2-right-angle ruler piece, 201-arc groove, 3-U-shaped limiting component, 4-extrusion pushing component, 401-strip groove, 402-inclined extrusion part, 403-pushing part, 5-U-shaped sliding frame, 501-inclined pressure-bearing part, 502-through groove, 6-circular limiting block, 7-spring. Detailed Implementation

[0016] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0017] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0018] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0019] Please see Figures 1-10 In this embodiment of the present invention, a right-angle feeler gauge for testing includes a housing 1 and multiple right-angle feeler plates 2, whose thickness increases sequentially and are stacked on top of each other, rotatably mounted within the housing 1; each right-angle feeler plate 2 has an arc-shaped groove 201 formed on both sides near its rotatable connection with the housing 1; it also includes an elastic locking mechanism, which engages with the arc-shaped groove 201 to fix the position of the right-angle feeler plate 2 relative to the housing 1 when it rotates out of or retracts from the housing 1; and an unlocking component, which cooperates with the elastic locking mechanism, such that when the unlocking component triggers unlocking, the elastic locking mechanism disengages from the arc-shaped groove 201.

[0020] The above-mentioned flexible locking mechanism can be configured to engage with the arc-shaped slots 201 on multiple right-angle ruler pieces 2, so that multiple right-angle ruler pieces 2 can rotate freely when unlocking. Alternatively, multiple flexible locking mechanisms can be configured to correspond one-to-one with multiple right-angle ruler pieces 2.

[0021] In this embodiment, the elastic locking mechanism ensures the stability of the right-angle ruler 2 relative to the ruler housing 1 when it is rotated out of the housing 1 for use. This maintains the stability of the right-angle ruler 2 during gap measurement, especially in the space-constrained environment of nuclear power equipment, where its high operational stability effectively improves measurement efficiency. Furthermore, the right-angle shape of the feeler gauge in this embodiment allows for effective application in APA vibration probe measurements, effectively conforming to curved surface contours and improving measurement accuracy.

[0022] It should also be noted that when the right-angle ruler 2 is retracted into the ruler housing 1, it can also be restricted by the elastic locking mechanism to ensure that it will not become loose during carrying.

[0023] In one embodiment, the width of the plurality of right-angle ruler pieces 2 is 20mm, and the thickness of the plurality of right-angle ruler pieces 2 is 1mm, 1.15mm, 1.16mm, 1.17mm, etc., respectively. The specific quantity and size can be selected according to actual needs.

[0024] Further, please refer to Figures 3-10 The elastic locking mechanism includes: a U-shaped sliding frame 5 and a circular limiting block 6 fixed thereto, the U-shaped sliding frame 5 passing through the ruler shell 1 and being able to slide relative to the ruler shell 1; and a spring 7 placed inside the ruler shell 1 and located inside the U-shaped sliding frame 5, the two ends of the spring 7 being connected to the circular limiting block 6 and the inner wall of the ruler shell 1, respectively.

[0025] The spring 7 is always in a compressed state. When the U-shaped sliding frame 5 moves toward the outside of the ruler shell 1, the spring 7 is further compressed. Keeping the spring 7 in a compressed state can ensure the stability of the right-angle ruler 2.

[0026] In this embodiment, the circular limiting block 6 is engaged in the arc-shaped slot 201 under the action of the spring 7, thereby limiting the right-angle ruler piece 2. When the U-shaped sliding frame 5 moves towards the outside of the ruler shell 1 under the force of the unlocking component, it drives the circular limiting block 6 to move synchronously, causing the circular limiting block 6 to disengage from the arc-shaped slot 201. At this time, the right-angle ruler piece 2 loses the limiting force and can rotate freely. When the U-shaped sliding frame 5 disengages from the force of the unlocking component, the U-shaped sliding frame 5 moves towards the inside of the ruler shell 1 under the action of the spring 7's reset force, thereby driving the circular limiting block 6 to reset. The circular limiting block 6 is engaged in the arc-shaped slot 201 again, thereby re-limiting the right-angle ruler piece 2. This ensures that the right-angle ruler piece 2 remains stable during use and storage, and the operation is simple. The free rotation and limiting fixation of the right-angle ruler piece 2 can be achieved with a simple unlocking action, which improves the convenience and efficiency of use to a certain extent.

[0027] Further, please refer to Figure 9 The unlocking component includes a squeezing pusher 4 that is slidably installed on the side of the ruler shell 1. The end of the squeezing pusher 4 is formed with an inclined squeezing part 402. The inclined squeezing part 402 is inserted into the through groove 502 formed on the U-shaped sliding frame 5 and abuts against the inclined pressure-receiving part 501 formed in the through groove 502.

[0028] Among them, the two inclined surfaces of the inclined pressing part 402 and the inclined pressing part 501 are kept parallel and in contact. When the pressing pusher 4 moves toward the U-shaped sliding frame 5, the U-shaped sliding frame 5 has a component force that moves toward the outside of the ruler shell 1, thereby driving the U-shaped sliding frame 5 to move, so as to finally unlock (the unlocking process has been described above and will not be repeated here).

[0029] Preferably, in order to ensure the stability of the sliding of the extrusion pusher 4, a strip groove 401 is formed on the extrusion pusher 4, and a U-shaped limiting member 3 fixed on the ruler shell 1 passes through the strip groove 401 so that the extrusion pusher 4 can slide relative to the ruler shell 1 in a directional manner. The length of the U-shaped limiting member 3 is less than the length of the strip groove 401, so that the extrusion pusher 4 can undergo a certain length displacement change relative to the ruler shell 1.

[0030] Preferably, in order to facilitate the pushing of the squeezing pusher 4, the squeezing pusher 4 is also fixed with a pushing part 403. The pushing part 403 is arranged in a trapezoidal shape. It should also be noted that the pushing part 403 on each squeezing pusher 4 can be staggered, so that when the user's hand touches the pushing part 403, there can be a larger contact area, which facilitates the pushing operation.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A right-angle feeler gauge for testing, comprising a gauge housing (1) and a plurality of right-angle gauge pieces (2) of sequentially increasing thickness and stacked on top of each other, rotatably mounted within the gauge housing (1); characterized in that, The right-angle ruler (2) has arc-shaped slots (201) on both sides that are close to the ruler shell (1) for rotational connection; it also includes an elastic locking mechanism, which engages with the arc-shaped slots (201) to fix the position of the right-angle ruler (2) relative to the ruler shell (1) when it rotates out of or retracts into the ruler shell (1); and an unlocking component, which cooperates with the elastic locking mechanism, and when the unlocking component triggers unlocking, the elastic locking mechanism disengages from the arc-shaped slots (201).

2. A right-angle feeler gauge for testing according to claim 1, characterized in that, The elastic locking mechanism includes: a U-shaped sliding frame (5) and a circular limiting block (6) fixed thereto, the U-shaped sliding frame (5) passing through the ruler shell (1) and being able to slide relative to the ruler shell (1); a spring (7) placed inside the ruler shell (1) and located inside the U-shaped sliding frame (5), the two ends of the spring (7) being connected to the circular limiting block (6) and the inner wall of the ruler shell (1) respectively.

3. A right-angle feeler gauge for testing according to claim 2, characterized in that, The unlocking component includes: a squeezing pusher (4) slidably mounted on the side end of the ruler shell (1), the end of the squeezing pusher (4) having an inclined squeezing part (402), the inclined squeezing part (402) being inserted into a through groove (502) formed on the U-shaped sliding frame (5) and abutting against an inclined pressure-bearing part (501) formed in the through groove (502).

4. A right-angle feeler gauge for testing according to claim 3, characterized in that, A strip groove (401) is formed on the extrusion pusher (4), and a U-shaped limiting member (3) fixed on the ruler shell (1) passes through the strip groove (401) so that the extrusion pusher (4) can slide relative to the ruler shell (1).

5. A right-angle feeler gauge for testing according to claim 4, characterized in that, The extrusion pusher (4) is also fixed with a pusher (403), which is arranged in a trapezoidal shape.

6. A right-angle feeler gauge for testing according to claim 1, characterized in that, The width of the plurality of right-angle ruler pieces (2) is 20 mm.

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