A lighting controller knob rotation angle measurement fixture

Abstract

The application belongs to the technical field of measuring tooling, and particularly relates to a kind of illumination controller knob rotation angle measuring tooling, comprising: dial, vice ruler, mandrel, set screw;Wherein, the upper surface of dial is engraved with angle scale line, and the center has cylindrical boss, and the cylindrical boss has center hole, and the lower surface of dial has connecting structure fixedly connected with measured piece;Vice ruler center has big hole, middle hole and small hole, big hole is sleeved on the cylindrical boss of dial;Middle hole and small hole are sleeved on mandrel and are fixed, dial rotates relative to mandrel and vice ruler, the end face of mandrel has clearance fit with the blind hole of the knob of measured piece, and the wall surface has the radial threaded hole communicating with blind hole, and set screw is screwed into threaded hole and is fixed against knob;Rotating knurled knob drives the knob of measured piece and vice ruler to rotate relative to dial, and the rotation angle of knob of measured piece can be accurately measured through dial and vice ruler scale.

Description

Technical Field

[0001] The present application belongs to the technical field of measuring tooling, and in particular relates to a tooling for measuring the rotation angle of a lighting controller knob. Background Art

[0002] Lighting controllers such as Figure 10-11 As shown, it consists of a box body (a) and a knob (b). The box body is a rectangular parallelepiped, and the knob is a shaft structure, mounted on the top of the box body. During assembly, the knob's rotation angle must be measured. The clockwise rotation angle is 220°±2°. The conventional method involves marking a line on the shaft and observing with a protractor placed on the top surface of the knob. Since this relies on visual observation, it is difficult for the protractor center to coincide with the knob center. This measurement method results in large errors and is difficult to guarantee accuracy. Summary of the Invention

[0003] In order to solve the above problems, the present application provides a lighting controller knob rotation angle measurement tool, comprising:

[0004] Dial, scale, spindle, set screw, circlip, lock nut and knurled knob;

[0005] The outer edge of the upper surface of the scale plate is engraved with angle scale lines, the center is provided with a cylindrical boss, the cylindrical boss has a central hole, and the lower surface of the scale plate has a connection structure fixedly connected to the measured object;

[0006] The center of the secondary ruler has a concentric large hole, a middle hole and a small hole, and the large hole is mounted on the cylindrical boss of the dial;

[0007] The core shaft includes a first cylindrical section, a second cylindrical section, a third cylindrical section, a fourth cylindrical section and a threaded section. The end face of the first cylindrical section has a blind hole that is gap-matched with the knob of the measured part, and the wall surface has a radial threaded hole connected to the blind hole. The set screw is screwed into the threaded hole and fixed against the knob; the second cylindrical section can be rotatably sleeved in the center hole of the dial, the diameter of the third cylindrical section is larger than that of the second cylindrical section and the fourth cylindrical section, the third cylindrical section is sleeved in the middle hole, and the fourth cylindrical section is sleeved in the small hole. The locking nut is installed on the threaded section, and the secondary scale is fixed between the locking nut and the third cylindrical section. Turning the knurled knob drives the knob of the measured part and the secondary scale to rotate relative to the dial.

[0008] Preferably, a bushing is provided in an interference fit on the outer cylindrical surface of the second cylindrical segment, and a retaining ring having a diameter larger than that of the bushing is provided at one end of the bushing away from the third cylindrical segment, and the center hole of the dial has an expanded hole for accommodating the retaining ring, and the displacement freedom of the dial in two axial directions is limited by the retaining ring of the bushing and the third cylindrical segment.

[0009] Preferably, an annular groove is provided between the first cylindrical section and the second cylindrical section, and an elastic retaining ring for limiting the axial displacement of the bushing is installed in the annular groove.

[0010] Preferably, the connection structure of the scale plate includes at least two rectangular blocks for clamping on the measured object.

[0011] Preferably, the lower surface of the scale plate has a guide rail, the rectangular block has a guide groove slidably connected to the guide rail, and the guide groove has a positioning bolt. After the positioning bolt is screwed in, the positioning bolt abuts against the guide rail to limit the displacement of the rectangular block.

[0012] Preferably, the cuboid has a through hole for passing a screwdriver, and the screwdriver is used to tighten the set screw.

[0013] Preferably, a washer is provided between the locking nut and the secondary ruler.

[0014] Preferably, the core shaft has a square section for mounting a knurled knob, the knurled knob has a square hole sleeved on the square section, the end of the square section is an externally threaded end section, and a cap nut for tightening the knurled knob is mounted on the externally threaded end section.

[0015] This application can measure the knob angle and improve measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the installation of a measuring tool and a lighting controller knob in a preferred embodiment of the present application.

[0017] Figure 2 yes Figure 1 Right view of .

[0018] Figure 3 It is a schematic diagram of a dial according to a preferred embodiment of the present application.

[0019] Figure 4 This is a half-section view of a dial according to a preferred embodiment of the present application.

[0020] Figure 5 It is a side view of a dial according to a preferred embodiment of the present application.

[0021] Figure 6 Schematic diagram of a secondary ruler according to a preferred embodiment of the present application.

[0022] Figure 7 This is a half-section view of a secondary ruler according to a preferred embodiment of the present application.

[0023] Figure 8 This is a schematic diagram of a core shaft in a preferred embodiment of the present application.

[0024] Figure 9 This is a schematic diagram of a knurled knob according to a preferred embodiment of the present application.

[0025] Figure 10This is the front view of the lighting controller.

[0026] Figure 11 is a side view of the lighting controller. DETAILED DESCRIPTION

[0027] To make the technical solution and its advantages of the present application clearer, the technical solution of the present application will be described in further detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present application and are only used to explain the present application, not to limit the present application. It should be noted that, for ease of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0028] like Figure 1-Figure 2 As shown, a lighting controller knob rotation angle measurement tool includes:

[0029] Dial 1, secondary scale 2, bushing 3, core shaft 4, set screw 5, elastic retaining ring 6, lock nut 8 and knurled knob 9.

[0030] Among them, the dial 1 is as follows Figure 3-Figure 5 As shown, the whole is a disc structure, with a large-diameter circular plate in the middle. Angle scale lines are engraved on the outer edge of the circular plate, and the adjacent scale lines differ by 1°. A small-diameter cylindrical boss protrudes from the upper surface of the circular plate. The circular plate and the cylindrical boss have a center hole. The lower surface of the dial 1 has a connection structure that is fixedly connected to the measured object;

[0031] Secondary ruler 2 Figure 6-Figure 7 As shown, the secondary ruler 2 is a circular disc with a concentric large hole, a medium hole, and a small hole at its center. The large hole fits over the cylindrical boss of the scale plate 1. The outer edge of the secondary ruler 2 is tapered. Starting from the horizontal line, the tapered surface is engraved with 30 scale lines on both sides of the outer edge in a clockwise direction. This scale line, when aligned with the scale lines of the scale plate 1, provides an accuracy of 2 minutes. The outer edges of the scale lines of the secondary ruler 2 contact the inner edges of the scale lines of the scale plate 1, and the reading method is the same as that of a universal angle ruler. There is a 0.1mm gap between the lower surface of the secondary ruler 2 and the upper surface of the scale plate 1.

[0032] Mandrel 4 Figure 8-Figure 9As shown, the axial structure comprises, in order, a first cylindrical segment, a second cylindrical segment, a third cylindrical segment, a fourth cylindrical segment, and a threaded segment. The leftmost cylindrical segment is the first cylindrical segment. Its end face has a blind hole that provides a clearance fit with the knob b of the test piece. Its wall surface has a radial threaded hole connecting to the blind hole. A set screw 5 is screwed into the threaded hole to abut against the knob b, enabling synchronous rotation. The second cylindrical segment is rotatably mounted within the center hole of the scale plate 1. The third cylindrical segment has a larger diameter than the second and fourth cylindrical segments. The third cylindrical segment fits within the center hole, while the fourth cylindrical segment fits within the small hole. A locking nut 8 is mounted on the threaded segment. When the locking nut 8 is loosened, the secondary scale 2 can rotate about the core shaft 4. When the locking nut 8 is screwed in, it secures the secondary scale 2 between the locking nut 8 and the third cylindrical segment. Turning the knurled knob 9 causes the knob b of the test piece and the secondary scale 2 to rotate relative to the scale plate 1.

[0033] In some optional embodiments, a bushing 3 is provided on the outer cylindrical surface of the second cylindrical segment in an interference fit. The bushing 3 is made of tin bronze. A retaining ring having a larger diameter than the bushing 3 is provided at the end of the bushing 3 away from the third cylindrical segment. The central hole of the scale plate 1 has an expanded hole to accommodate the retaining ring. The retaining ring of the bushing 3 and the third cylindrical segment constrain the scale plate 1's axial displacement in both directions.

[0034] In some optional embodiments, an annular groove is provided between the first cylindrical segment and the second cylindrical segment, and an elastic retaining ring 6 for limiting the axial displacement of the bushing 3 is installed in the annular groove.

[0035] In some optional embodiments, the connection structure of the scale plate 1 includes at least two rectangular blocks for clamping on the measured object. The lower surfaces of the two rectangular blocks are recessed near the scale plate 1 to form a stop for clamping on the width surface of the lighting controller box body a.

[0036] In some optional embodiments, the lower surface of the dial 1 has a guide rail, and the rectangular block has a guide groove. The rectangular block and the dial 1 are connected through the guide rail and guide groove. The guide groove has a positioning bolt. After the positioning bolt is screwed in, the positioning bolt rests on the guide rail to limit the displacement of the rectangular block.

[0037] In some optional embodiments, the cuboid has a through hole for passing a screwdriver, which is used to tighten the set screw 5.

[0038] In some optional embodiments, to ensure that the secondary ruler 2 is subjected to uniform force when tightened, a washer 7 is installed on the left side of the locking nut 8. By tightening the locking nut 8, the secondary ruler 2 and the core shaft 4 are fixed together.

[0039] In some optional embodiments, the core shaft 4 has a square section for mounting the knurled knob 9, the knurled knob 9 has a square hole sleeved on the square section, the end of the square section is an externally threaded end section, and a cap nut 10 for tightening the knurled knob 9 is mounted on the externally threaded end section.

[0040] The specific steps for measuring the rotation angle of the lighting controller knob are as follows:

[0041] 1. Install the angle measurement tooling on the lighting controller;

[0042] Step 1: Place the dial 1 on the width surface of the controller box a, align the knob b with the blind hole of the core shaft 4, and install it into the blind hole.

[0043] Step 2: Rotate the core shaft 4 and observe from the through hole on one side of the dial 1 until the head of the set screw 5 is seen. Use a screwdriver to tighten the set screw 5 through the through hole so that the core shaft 4 and the knob b can rotate synchronously.

[0044] 2. Measure the rotation angle of knob b;

[0045] Step 1: Loosen the locking nut 8 to allow the secondary scale 2 to rotate around the core shaft 4. When the scale lines of the secondary scale 2 and the dial 1 are aligned with zero, tighten the locking nut 8. At this time, the secondary scale 2 and the core shaft 4 are fixed together.

[0046] Step 2: Turn the knurled knob 9 clockwise to rotate the core shaft 4, sub-rule 2 and knob b until they can no longer be turned. Read the value, which is the rotation angle of knob b.

[0047] 3. Disassemble the angle measurement tooling;

[0048] Step 1: Rotate the knurled knob 9 counterclockwise to return to the starting position.

[0049] Step 2: Use a screwdriver to loosen the set screw 5 through the through hole on the dial 1, and then remove the angle measuring fixture upwards.

[0050] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A lighting controller knob rotation angle measurement tool, characterized in that: include: Dial (1), secondary scale (2), spindle (4), set screw (5), circlip (6), lock nut (8) and knurled knob (9); The outer edge of the upper surface of the scale plate (1) is engraved with angle scale lines, the center of the scale plate (1) is provided with a cylindrical boss, the cylindrical boss has a central hole, and the lower surface of the scale plate (1) has a connection structure fixedly connected to the measured object; The center of the secondary ruler (2) has a concentric large hole, a middle hole and a small hole, and the large hole is sleeved on the cylindrical boss of the dial (1); The core shaft (4) includes a first cylindrical section, a second cylindrical section, a third cylindrical section, a fourth cylindrical section and a threaded section. The end face of the first cylindrical section has a blind hole that is clearance-matched with the knob of the measured object, and the wall surface has a radial threaded hole connected to the blind hole. The set screw (5) is screwed into the threaded hole and fixed against the knob; the second cylindrical section can be rotatably sleeved in the center hole of the scale (1). The diameter of the third cylindrical section is larger than that of the second cylindrical section and the fourth cylindrical section. The third cylindrical section is sleeved in the middle hole, and the fourth cylindrical section is sleeved in the small hole. The locking nut (8) is installed on the threaded section. The secondary scale (2) is fixed between the locking nut (8) and the third cylindrical section. Rotating the knurled knob (9) drives the knob of the measured object and the secondary scale (2) to rotate relative to the scale (1).

2. The lighting controller knob rotation angle measuring tool according to claim 1, characterized in that: A bushing (3) is sleeved on the outer cylindrical surface of the second cylindrical segment in an interference fit, and an end of the bushing (3) away from the third cylindrical segment has a retaining ring with a diameter larger than that of the bushing (3). The central hole of the scale plate (1) has an expanded hole for accommodating the retaining ring, and the displacement freedom of the scale plate (1) in two axial directions is limited by the retaining ring of the bushing (3) and the third cylindrical segment.

3. The lighting controller knob rotation angle measuring tool as claimed in claim 2, characterized in that: An annular groove is provided between the first cylindrical section and the second cylindrical section, and an elastic retaining ring (6) for limiting the axial displacement of the bushing (3) is installed in the annular groove.

4. The lighting controller knob rotation angle measuring tool according to claim 1, characterized in that: The connection structure of the scale plate (1) comprises at least two rectangular blocks, which are used to be clamped on the measured object.

5. The lighting controller knob rotation angle measuring tool as claimed in claim 4, characterized in that: The lower surface of the scale plate (1) has a guide rail, the rectangular block has a guide groove slidably connected to the guide rail, and the guide groove has a positioning bolt. After the positioning bolt is screwed in, the positioning bolt abuts against the guide rail to limit the displacement of the rectangular block.

6. The lighting controller knob rotation angle measuring tool as claimed in claim 4, characterized in that: The rectangular parallelepiped has a through hole for passing a screwdriver, and the screwdriver is used to tighten the set screw (5).

7. The lighting controller knob rotation angle measuring tool according to claim 1, characterized in that: A washer (7) is provided between the locking nut (8) and the secondary ruler (2).

8. The lighting controller knob rotation angle measuring tool according to claim 1, characterized in that: The core shaft (4) has a square section on which a knurled knob (9) is mounted. The knurled knob (9) has a square hole sleeved on the square section. The end of the square section is an externally threaded end section. A cap nut (10) for tightening the knurled knob (9) is mounted on the externally threaded end section.

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