Knob type universal meter structure with replaceable turntable frame

Abstract

The utility model relates to a knob-type universal meter structure with a replaceable turntable frame, which comprises a knob, a shell, a turntable frame and a turntable, and is characterized in that the shell is provided with a positioning groove, and a plurality of first screw columns are arranged in the circumferential direction of the positioning groove in an array manner; a plurality of sleeve holes are formed in the rotary table frame, and the sleeve holes and the first screw columns are arranged in a matched and sleeved mode; a gear groove is formed in the upper surface of the rotary table frame, an elastic wall structure used for being matched with the gear groove to achieve gear switching is arranged on the side wall of the rotary table, and the rotary table is in sliding connection with the rotary table frame. A sliding groove is formed in the lower surface of the rotary table frame. A rotary knob penetrates through a positioning groove to be in sliding connection with the sliding groove and is fixedly connected with the rotary table. The first screw column is fixedly connected with a circuit board through a self-tapping screw; the requirement for changing the number of gears can be met by replacing the rotary table frame, and the function can be achieved with the minimum change.

Description

Technical Field

[0001] The utility model relates to a knob-type multimeter structure with a replaceable turntable frame, belonging to the technical field of multimeters. Background Art

[0002] Digital multimeters are widely used in the measurement field, involving all major, medium and small electronic industries. At present, the structure of the dial stop of the general knob multimeter is integrated on the outer shell. One shell can only correspond to one fixed gear. If there is a need to change the number of different functional gears, multiple similar shell molds must be opened, which requires a lot of time and R&D funds, and the shell products produced have a single function. If one of the gear functions is abandoned, the cost of occupying idle materials is high. Utility Model Content

[0003] In order to solve the above problems existing in the prior art, the utility model provides a knob-type multimeter structure with a replaceable turntable frame, which can replace the turntable frame to meet the demand for changing the number of gear positions and meet the function with minimal changes.

[0004] The technical solution of the utility model is as follows:

[0005] A knob-type multimeter structure with a replaceable turntable frame comprises a knob, a shell, a turntable frame and a turntable, wherein the shell is provided with a positioning groove, and a plurality of first screw columns are arranged in a circumferential array of the positioning groove; the turntable frame is provided with a plurality of sleeve holes, and the sleeve holes and the first screw columns are matched and sleeved; the upper surface of the turntable frame is provided with a gear slot, and the side wall of the turntable is provided with a spring wall structure for cooperating with the gear slot to realize gear switching, and the turntable is slidably connected to the turntable frame; the lower surface of the turntable frame is provided with a sliding slot, and the knob passes through the positioning slot and is slidably connected to the sliding slot, and the knob is fixedly connected to the turntable; the first screw column is fixedly connected to a circuit board by a self-tapping screw.

[0006] Wherein, a positioning column is arranged on the positioning groove, and a positioning hole matching the positioning column is arranged on the turntable frame.

[0007] Among them, two stop protrusions are symmetrically arranged on the sliding groove, and a stop slide is arranged on the side of the knob facing the turntable. The stop slide slides on the sliding groove, and the two stop protrusions are used to limit the sliding range of the stop slide.

[0008] Wherein, the upper surface of the turntable frame is provided with sliding ribs, and the turntable is slidably connected to the turntable frame through the sliding ribs.

[0009] Wherein, a second screw column is arranged on the side of the knob facing the turntable, a screw hole matching the second screw column is arranged on the surface of the turntable, and the knob is connected to the turntable through threads.

[0010] Wherein, a handle is arranged on the side of the knob opposite to the turntable.

[0011] The utility model has the following beneficial effects:

[0012] The utility model makes the turntable frame and the shell detachable, which can meet the requirement that only the same outer shell is needed in any gear position. It is only necessary to develop different turntable frames for replacement according to needs. The cost occupied by the turntable frame accounts for much less than the outer shell, which greatly reduces resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is an exploded diagram of the module of the utility model;

[0014] Figure 2 This is a schematic diagram of the housing structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the upper surface of the turntable frame of the utility model;

[0016] Figure 4 This is a schematic diagram of the lower surface of the turntable frame of the utility model;

[0017] Figure 5 This is a side half-section view of the turntable frame of the utility model;

[0018] Figure 6 This is a schematic diagram of the lower surface of the knob of the utility model;

[0019] Figure 7 It is a schematic diagram of the upper surface of the knob of the utility model.

[0020] The reference numerals in the figure are as follows:

[0021] 1. Knob; 2. Housing; 21. Positioning slot; 22. First screw column; 23. Positioning column; 3. Turntable frame; 31. Hole; 32. Positioning slot; 33. Sliding rib; 34. Stopping protrusion; 35. Sliding slot; 36. Positioning hole; 4. Turntable; 5. Self-tapping screw; 6. Circuit board; 11. Turning handle; 12. Stop slide; 13. Second screw column. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] See also Figures 1 to 7 , the utility model provides a technical solution:

[0024] A knob-type multimeter structure with a replaceable turntable frame includes a knob 1, a housing 2, a turntable frame 3 and a turntable 4. The housing 2 is provided with a positioning groove 21, and a plurality of first screw columns 22 are arranged in a circumferential array on the positioning groove 21. A positioning column 23 is also arranged on the positioning groove 21; a plurality of sleeve holes 31 are arranged on the turntable frame 3, and the sleeve holes 31 and the first screw columns 22 are matched and sleeved, and a positioning hole 36 matching the positioning column 23 is arranged on the turntable frame 3; by matching the positioning hole 36 and the positioning column 23, the turntable frame 3 and the positioning groove 21 are fitted together, the turntable frame 3 is installed in the positioning groove 21 of the shell 2, the sleeve hole 31 is sleeved on the outside of the positioning column 23, and the turntable frame 3 is pressed by the sleeve hole 31 to stabilize the connection between the two; the upper surface of the turntable frame 3 is provided with a gear groove 32, and the number of the gear grooves 32 on the turntable frame 3 is developed according to functional requirements. The side wall of the turntable 4 is provided with an elastic wall structure for cooperating with the gear groove 32 to realize gear switching, and the cooperation between the elastic wall structure and the gear groove 32 can adopt any existing structure that can realize gear adjustment The structure is a structure in which the gear adjustment is realized by a spring and a steel column; a sliding rib 33 is provided on the upper surface of the turntable frame 3, and the turntable 4 is slidably connected to the turntable frame 3 through the sliding rib 33 to prevent excessive contact friction from affecting the rotation feel; a sliding groove 35 is provided on the lower surface of the turntable frame 3, that is, on the side of the turntable frame 3 away from the turntable 4, and the sliding groove 35 is a hollow circular ring, and two stopper protrusions 34 are symmetrically provided on the sliding groove 35, and the two stopper protrusions 34 form an arc-shaped slideway on the sliding groove 35, and the knob 1 A stop slide 12 is provided on the side facing the turntable 4. The stop slide 12 passes through the positioning groove 21. The stop slide 12 slides on the arc-shaped slide formed between the two stop protrusions 34. Due to the stop protrusions 34 provided on both sides, when the stop slide 12 slides to the two ends of the outermost edge of the arc-shaped slide, it will be hindered by the stop protrusions 34 and cannot continue to rotate, that is, the sliding range of the stop slide 12 is limited, and the rotation angle of the knob 1 is limited; the first screw column 22 is fixedly connected to the circuit board 6 by the self-tapping screw 5.

[0025] A second screw column 13 is arranged on the side facing the knob 1 and the turntable 4 , and a screw hole matching the second screw column 13 is arranged on the surface of the turntable 4 . The knob 1 and the turntable 4 are connected by threads.

[0026] A handle 11 is provided on the side of the knob 1 opposite to the turntable 4 .

[0027] The working principle of the above-mentioned knob-type multimeter structure with a replaceable turntable frame is as follows:

[0028] The number and shape of the gear slots of the turntable frame 3 can be replaced according to functional requirements. The turntable frame 3 is inserted into the corresponding first screw column 22 through the sleeve hole 31 and assembled through the positioning column 23, so that the turntable frame 3 can be detachable and the gear function of the shell can be changed according to different needs.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A knob-type multimeter structure with a replaceable turntable frame, characterized in that: The utility model comprises a knob (1), a shell (2), a turntable frame (3) and a turntable (4), wherein a positioning groove (21) is provided on the shell (2), and a plurality of first screw columns (22) are arranged in a circumferential array on the positioning groove (21); a plurality of sleeve holes (31) are provided on the turntable frame (3), and the sleeve holes (31) and the first screw columns (22) are matched and sleeved; a gear groove (32) is provided on the upper surface of the turntable frame (3), and a spring wall structure for cooperating with the gear groove (32) to realize gear switching is provided on the side wall of the turntable (4), and the turntable (4) is slidably connected to the turntable frame (3); a sliding groove (35) is provided on the lower surface of the turntable frame (3), and the knob (1) passes through the positioning groove (21) and is slidably connected to the sliding groove (35), and the knob (1) is fixedly connected to the turntable (4); and the first screw column (22) is fixedly connected to a circuit board (6) by a self-tapping screw (5).

2. The knob-type multimeter structure with a replaceable turntable frame as claimed in claim 1, characterized in that: The positioning groove (21) is provided with a positioning column (23), and the turntable frame (3) is provided with a positioning hole (36) matching the positioning column (23).

3. The knob-type multimeter structure with a replaceable turntable frame as claimed in claim 1, characterized in that: Two stop protrusions (34) are symmetrically arranged on the sliding groove (35); a stop slide (12) is arranged on the side of the knob (1) facing the turntable (4); the stop slide (12) slides on the sliding groove (35); and the two stop protrusions (34) are used to limit the sliding range of the stop slide (12).

4. The knob-type multimeter structure with a replaceable turntable frame as claimed in claim 1, characterized in that: The upper surface of the turntable frame (3) is provided with sliding ribs (33), and the turntable (4) is slidably connected to the turntable frame (3) via the sliding ribs (33).

5. The knob-type multimeter structure with a replaceable turntable frame as claimed in claim 1, characterized in that: A second screw column (13) is arranged on the side of the knob (1) facing the turntable (4), a screw hole matching the second screw column (13) is arranged on the surface of the turntable (4), and the knob (1) and the turntable (4) are connected by threads.

6. The knob-type multimeter structure with a replaceable turntable frame as claimed in claim 1, characterized in that: A rotating handle (11) is provided on the side of the rotating knob (1) opposite to the rotating disk (4).

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