Support plate flatness detection device for electronic scale

Abstract

The application relates to a kind of electronic scale support plate flatness detection device. Including base and a plurality of negative electrode conductive terminals, the base is provided with a center point, all negative electrode conductive terminals are distributed around the center point. Each negative electrode conductive terminal is slidably installed on the base along the radial direction of the center point. The application adjusts the position of each negative electrode conductive terminal to adapt to the detection of electronic scale support plates of different specifications (size), realizes one-to-many purpose, expands the detection range and improves the flexibility of detection.

Description

TECHNICAL FIELD

[0001] The application relates to a support plate flatness detection device of an electronic scale. BACKGROUND

[0002] The applicant has proposed a variety of technical solutions for measuring the flatness of the support plate of an electronic scale by using electronic detection technology. For details, please refer to Chinese invention patent specification CN212030448U and CN217483448U. They include a power-on detection circuit composed of a positive electrode conducting terminal (conductive clamp) and a plurality of negative electrode conducting terminals. Each negative electrode conducting terminal forms a circuit branch, and each circuit branch is provided with an indicator lamp.

[0003] During detection, the metal support plate of the electronic scale to be detected is placed on all the negative electrode conducting terminals so that the negative electrode conducting terminals can support and contact the metal support plate, and then the positive electrode conducting terminal (conductive clamp) is connected with the metal support plate. Since the positive electrode conducting terminal (conductive clamp) is in conduction with the negative electrode conducting terminals through the metal support plate, the indicator lamps provided on the circuit branches of the negative electrode conducting terminals will be lit at this time. If the indicator lamp of a certain circuit branch is not lit, it indicates that the metal support plate is not in contact with the negative electrode conducting terminal associated with the unlit indicator lamp, and the flatness of the metal support plate to be detected is unqualified. Thus, the advantages of faster, simpler and more time-saving measurement can be achieved.

[0004] However, the above detection device can only be used for the detection of metal support plates of limited specifications (sizes) since the negative electrode conducting terminals are fixed. When detecting metal support plates of different specifications (sizes), a detection device needs to be provided for each specification (size) of the metal support plate accordingly, which brings inconvenience to the detection process. SUMMARY

[0005] The purpose of the present application is to provide a support plate flatness detection device of an electronic scale, which comprises a base and a plurality of negative electrode conducting terminals. The base is provided with a center point, and all the negative electrode conducting terminals are distributed circumferentially and spaced apart around the center point. Each negative electrode conducting terminal is slidably mounted on the base along the radial direction of the center point.

[0006] The present application adjusts the positions of the negative electrode conducting terminals to adapt to the detection of support plates of electronic scales of different specifications (sizes), realizes the purpose of one-to-many, expands the detection range, and improves the flexibility of detection. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 The detection circuit structure schematic diagram of the present application is shown;

[0008] Figure 2 The front view of the present application is shown;

[0009] Figure 3 A rear view of the present application is shown;

[0010] Figure 4 A schematic view of the present application is shown after moving the dial wheel away from the base; Figure 3

[0011] Figure 5 and Figure 6 respectively show perspective views of the present application from two different angles;

[0012] Figure 7 and Figure 8 respectively show perspective exploded views of the present application from two different angles;

[0013] Figure 9 A perspective view of the slider-crank mechanism of the present application is shown.

[0014] Reference numerals:

[0015] 10 base, 101 base shaft; 20 negative electrode conductive terminal; 30 dial wheel, 301 sliding groove, 302 center ring portion, 303 arm portion; 40 slider-crank mechanism, 401 crank, 402 connecting rod, 403 slider, 404 pivot of crank and connecting rod articulation; 50 damping ring. DETAILED DESCRIPTION

[0016] The present application will be further described in conjunction with the accompanying drawings.

[0017] As Figures 1 to 9 shown in a kind of electronic scale's support plate flatness detection device, including base 10 and multiple negative electrode conductive terminal 20, the base 10 is equipped with a center point O, all negative electrode conductive terminal 20 is distributed around the center point O circumferentially interval;

[0018] Each negative electrode conductive terminal 20 is slidably installed on the base 10 along the radial direction of the center point O.

[0019] The technical solution adjusts the position of each negative electrode conductive terminal to adapt to the detection of the support plate of electronic scale of different specifications (size), realizes the purpose of one-to-many, expands the detection range, and improves the flexibility of detection. In addition, the position adjustment of each negative electrode conductive terminal can realize the detection of different positions (contacts) of the support plate of the same specification (size) of electronic scale, and realize the comprehensive diversity of detection.

[0020] The base 10 is provided with a synchronous mechanism for synchronously sliding all negative electrode conductive terminals.

[0021] The technical solution adjusts all negative electrode conductive terminals synchronously by the synchronous mechanism.

[0022] ​The synchronous mechanism comprises a dial 30 and a plurality of crank slider mechanisms 40;

[0023] The number of the crank slider mechanisms 40 is equal to the number of the negative electrode conductive terminals 20, and each of the crank slider mechanisms 40 is matched with one of the negative electrode conductive terminals 20 respectively;

[0024] Each of the crank slider mechanisms 40 comprises a crank 401, a connecting rod 402 and a slider 403, one end of the crank 401 is hinged to the base 10, the other end of the crank 401 is hinged to one end of the connecting rod 402, the other end of the connecting rod 402 is hinged to the slider 403, the slider 403 is slidingly installed on the base 10 along the radial direction of the center point O, and the negative electrode conductive terminal 20 is installed on the slider 403, so as to realize the sliding of the negative electrode conductive terminal along the radial direction of the center point;

[0025] The dial 30 is rotatably installed on the base 10, and the rotation axis of the dial 30 passes through the center point O;

[0026] The dial 30 is provided with a plurality of sliding grooves 301, and the number of the sliding grooves 301 is equal to the number of the crank slider mechanisms 40;

[0027] The rotation shaft 404 of the crank 401 and the connecting rod 402 of each of the crank slider mechanisms 40 respectively passes through one of the sliding grooves 301.

[0028] The synchronous mechanism disclosed by the technical scheme is simple in structure and easy to implement, and all the crank slider mechanisms can be driven to move by the rotation of the dial.

[0029] The base 10 is provided with a damping mechanism for providing the dial 30 with a damping force to resist the rotation of the dial. The damping mechanism can avoid the free sliding of the negative electrode conductive terminal without constraint, so as to solve the dislocation problem of the negative electrode conductive terminal.

[0030] In the embodiment, when the positions of the negative electrode conductive terminals are adjusted, one of the negative electrode conductive terminals is manually dialled, so as to transmit the force to the dial, the dial is rotated against the damping force of the damping mechanism, and thus the other negative electrode conductive terminals are driven.

[0031] The dial 30 comprises a central ring part 302 and a plurality of arm parts 303 which are distributed in the circumferential direction of the rotation axis of the dial;

[0032] The number of the arm parts 303 is equal to the number of the sliding grooves 301, and each of the arm parts 301 is provided with one of the sliding grooves 301;

[0033] The base 10 is provided with a base shaft 101;

[0034] The damping mechanism comprises a damping ring 50;

[0035] The damping ring 50 is fixedly sleeved outside the base shaft 101, the central circular ring part 302 is rotatably sleeved outside the damping ring 50, and the inner circular surface of the central circular ring part 302 is in contact with the outer circular surface of the damping ring 50, thereby generating frictional damping.

[0036] The damping mechanism disclosed by the technical scheme has simple structure and is easy to implement.

[0037] In the embodiment, the number of the crank slider mechanisms, the negative electrode conductive terminals and the arm parts is 4.

[0038] All the negative electrode conductive terminals are distributed at equal intervals in the circumferential direction around the center point, and all the arm parts are distributed at equal intervals in the circumferential direction around the rotation axis of the dial.

[0039] The damping ring can be made of plastic.

[0040] The axis of the base shaft coincides with the rotation axis of the dial.

[0041] Each crank slider mechanism 40 is a concentric crank slider mechanism.

Claims

1. A support plate flatness detection device for an electronic scale, comprising a base and four negative electrode conductive terminals, the base being provided with a center point, and all the negative electrode conductive terminals being distributed equidistantly around the center point in a circumferential direction, characterized in that: each negative electrode conductive terminal is slidably mounted on the base along a radial direction of the center point; the synchronous mechanism comprises a dial and a plurality of crank slider mechanisms; the number of the crank slider mechanisms is equal to the number of the negative electrode conductive terminals, and each crank slider mechanism is paired with one negative electrode conductive terminal; each crank slider mechanism comprises a crank, a connecting rod and a slider, one end of the crank is hingedly connected to the base, the other end of the crank is hingedly connected to one end of the connecting rod, the other end of the connecting rod is hingedly connected to the slider, the slider is slidably mounted on the base along the radial direction of the center point, and the negative electrode conductive terminal is mounted on the slider; the dial is rotatably mounted on the base, and the rotation axis of the dial passes through the center point; the dial is provided with a number of grooves equal to the number of the crank slider mechanisms; and the rotation axis of the crank and the connecting rod of each crank slider mechanism passes through one groove.

2. The support plate flatness detection device for the electronic scale according to claim 1, characterized in that: the base is provided with a synchronous mechanism for synchronously sliding all the negative electrode conductive terminals.

3. The support plate flatness detection device for the electronic scale according to claim 1, characterized in that: the base is provided with a damping mechanism for providing a damping force to the dial to resist rotation of the dial.

4. The support plate flatness detection device for the electronic scale according to claim 3, characterized in that: the dial comprises a center ring and a plurality of arm portions distributed equidistantly around the rotation axis of the dial in a circumferential direction; the number of the arm portions is equal to the number of the grooves, and each arm portion is provided with one groove; the base is provided with a base shaft; the damping mechanism comprises a damping ring; the damping ring is fixedly sleeved outside the base shaft, the center ring is rotatably sleeved outside the damping ring, and the inner circular surface of the center ring is in contact with the outer circular surface of the damping ring.

5. The support plate flatness detection device for the electronic scale according to claim 4, characterized in that: each crank slider mechanism is a concentric crank slider mechanism. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 5. The electronic scale support plate flatness detection device according to claim 4, characterized in that: ​

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