Multi-weighing-stand lead seal structure and weighing instrument comprising same

Abstract

This invention provides a multi-platform lead-sealed structure and a weighing instrument including the same. The multi-platform lead-sealed structure includes a housing, multiple platform circuit board assemblies, multiple lead-sealed covers, and multiple lead-sealed screws. The platform circuit board assemblies are disposed within the housing. Each lead-sealed cover covers a corresponding platform circuit board assembly. The lead-sealed screws pass through the bottom of the housing into the corresponding platform circuit board assembly and the lead-sealed cover. The portion of the lead-sealed screw located at the bottom of the housing is sealed with a lead-sealing component. This invention enables the maintenance of other components unrelated to metrological performance, such as power modules, display modules, and other communication modules, such as PLC communication and serial communication, without damaging the lead seals, making maintenance more convenient and economical.

Description

Technical Field

[0001] This invention relates to the field of measuring instruments, and in particular to a multi-platform lead-sealed structure and a weighing instrument including the same. Background Technology

[0002] In the existing technology, the lead sealing method of existing products is mainly the overall lead sealing, that is, after the instrument is calibrated, the entire instrument shell is sealed with a lead sealing kit, which makes it easy for operators or inspectors to identify, and also prevents the operator's operation from affecting the measurement performance.

[0003] However, the common practice of sealing the entire instrument casing with lead-sealed kits is detrimental to the maintenance of other internal components. The purpose of lead sealing is to prevent operator error from affecting metrological performance. Simultaneously, any improper operation that affects metrological performance should be easily identifiable. Therefore, essentially only components affecting metrological performance should be sealed; components that do not affect metrological performance can be left unsealed or sealed as little as possible.

[0004] However, the existing overall lead-sealing solution seals all internal components of the instrument with lead. This means that any maintenance of any internal component requires breaking the lead seal.

[0005] In addition, lead seal kits are consumables, which causes trouble and economic losses for users.

[0006] In view of this, the inventors of this application have designed a multi-platform lead seal structure in order to overcome the above-mentioned technical problems. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the existing technology, such as the easy wear and tear of the integral lead seal, which increases the consumption cost and causes trouble and economic loss to users. The present invention provides a multi-platform lead seal structure and a weighing instrument including the lead seal.

[0008] The present invention solves the above-mentioned technical problems through the following technical solution:

[0009] A multi-scale weighing platform lead-sealing structure is characterized in that the multi-scale weighing platform lead-sealing structure includes a housing, multiple weighing platform circuit board assemblies, multiple lead-sealing covers, and multiple lead-sealing screws. The weighing platform circuit board assemblies are disposed inside the housing. Each lead-sealing cover covers the corresponding weighing platform circuit board assembly. The lead-sealing screws pass through the bottom of the housing into the corresponding weighing platform circuit board assembly and the lead-sealing cover. The portion of the lead-sealing screw located at the bottom of the housing is sealed with a lead-sealing component.

[0010] According to one embodiment of the present invention, each of the lead seal covers is fixed to the housing by a plurality of screws.

[0011] According to one embodiment of the present invention, the weighing platform circuit board assembly includes interconnected weighing platform circuit boards, electronic components, weighing platform wiring harnesses, and connectors.

[0012] According to one embodiment of the present invention, a sealing ring is provided between the lead-sealing screw and the housing.

[0013] According to one embodiment of the present invention, the housing is provided with a first threaded hole, the lead seal cover is provided with a second threaded hole, and the lead seal screw passes through the first threaded hole and the second threaded hole in sequence and is screwed and fixed in the second threaded hole.

[0014] According to one embodiment of the present invention, the portion of the lead-sealed screw located at the bottom of the housing is sealed with a paper-sealed lead-sealed component.

[0015] According to one embodiment of the present invention, the lead sealing component of the paper seal is lead sealing paper, which is attached to the bottom of the housing and covers the exposed portion of the lead sealing screw.

[0016] According to one embodiment of the present invention, the portion of the lead-sealed screw located at the bottom of the housing is sealed with a lead-sealed component using a wire lead seal.

[0017] According to one embodiment of the present invention, the lead seal component of the lead seal includes a lead seal wire, a lead seal head, and a lead seal post. The lead seal post is fixed to the bottom of the housing. The lead seal wire passes through the lead seal screw and the lead seal post in sequence, is tightened, and connected to the lead seal head.

[0018] The present invention also provides a weighing instrument, characterized in that the weighing instrument includes the multi-platform lead-sealed structure as described above.

[0019] The positive and progressive effects of this invention are as follows:

[0020] The multi-platform lead-seal structure and the weighing instrument including it of the present invention have the following advantages:

[0021] First, the independent lead seal scheme for multiple weighing platforms allows for the maintenance of other components unrelated to metrological performance, such as power modules, display modules, and other communication modules, such as PLC communication and serial communication, without damaging the lead seals, making maintenance more convenient and economical.

[0022] Second, a photoelectric switch was added to the circuit board of the weighing platform. After the lead seal screws are installed, the software can identify the lead seal status of each weighing platform and display the lead seal status of each weighing platform on the instrument software interface. Attached Figure Description

[0023] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always denote the same features, wherein:

[0024] Figure 1 This is a schematic diagram of the multi-platform lead seal structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the paper lead seal in the multi-platform lead seal structure of the present invention.

[0026] Figure 3 This is a schematic diagram of the lead seal in the center line of the multi-platform lead seal structure of the present invention.

[0027] [Attached image labels]

[0028] Casing 10

[0029] Scale platform circuit board assembly 20

[0030] Lead seal 30

[0031] 40 lead-sealed screws

[0032] Screw 31

[0033] Sealing ring 50

[0034] First threaded hole 11

[0035] Second threaded hole 32

[0036] Lead seal paper 41

[0037] Lead sealing wire 42

[0038] Lead end cap 43

[0039] Lead seal post 44

[0040] Scale platform wiring harness and connector 21

[0041] 45mm round hole Detailed Implementation

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] Embodiments of the invention will now be described in detail with reference to the accompanying drawings. Preferred embodiments of the invention will now be described in detail, examples of which are shown in the drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts.

[0044] Furthermore, although the terminology used in this invention is selected from commonly known and used terms, some terms mentioned in this specification may have been selected by the applicant in his or her judgment, and their detailed meanings are explained in the relevant sections of the description herein.

[0045] Furthermore, the invention should be understood not only through the actual terminology used, but also through the meaning implied by each term.

[0046] Figure 1 This is a schematic diagram of the multi-platform lead seal structure of the present invention. Figure 2 This is a schematic diagram of the paper lead seal in the multi-platform lead seal structure of the present invention. Figure 3 This is a schematic diagram of the lead seal in the center line of the multi-platform lead seal structure of the present invention.

[0047] like Figures 1 to 3 As shown, this invention discloses a multi-platform lead-sealed structure, which includes a housing 10, multiple platform circuit board assemblies 20, multiple lead-sealed covers 30, and multiple lead-sealed screws 40. The platform circuit board assemblies 20 are disposed within the housing 10. Each lead-sealed cover 30 covers its corresponding platform circuit board assembly 20. The lead-sealed screws 40 are inserted from the bottom of the housing 10 into the corresponding platform circuit board assembly 20 and lead-sealed cover 30. The portion of the lead-sealed screw 40 located at the bottom of the housing 10 is sealed with a lead-sealing component.

[0048] Preferably, each lead seal 30 is secured to the housing 10 by a plurality of screws 31. The weighing platform circuit board assembly 20 includes interconnected weighing platform circuit boards, electronic components, weighing platform wiring harnesses, and connectors.

[0049] Furthermore, a sealing ring 50 is provided between the lead-sealing screw 40 and the housing 10.

[0050] A first threaded hole 11 is provided on the housing 10, and a second threaded hole 32 is provided on the lead seal cover 30. The lead seal screw 40 passes through the first threaded hole 11 and the second threaded hole 32 in sequence and is tightened and fixed in the second threaded hole 32.

[0051] The portion of the lead-sealed screw 40 located at the bottom of the housing 10 is sealed with a paper-sealed component. For example, the paper-sealed component is a lead-sealing paper 41, which is attached to the bottom of the housing 10, covering the exposed portion of the lead-sealed screw 40.

[0052] Alternatively, the portion of the lead-sealing screw 40 located at the bottom of the housing 10 can also be sealed using a lead-sealing component of a wire seal. For example, the lead-sealing component of the wire seal includes a lead-sealing wire 42, a lead-sealing head 43, and a lead-sealing post 44. The lead-sealing post 44 is fixed to the bottom of the housing 10, and the lead-sealing wire 42 passes through the lead-sealing screw 40 and the lead-sealing post 44 in sequence, is tightened, and connected to the lead-sealing head 43.

[0053] The present invention also provides a weighing instrument, which includes the multi-platform lead-sealed structure as described above.

[0054] According to the above structural description, for multiple independent weighing platform circuit board assemblies installed inside the instrument, the multi-weighing platform lead seal structure of the present invention can individually seal each weighing platform circuit board assembly with the outer casing, so as not to affect the maintenance of other components inside the instrument, or only the weighing platform circuit board that needs maintenance can be broken for maintenance, while the lead seal status of other weighing platform circuit boards remains unaffected.

[0055] The specific sealing method for each weighing platform is as follows: A lead seal cover 30 encloses the weighing platform circuit board assembly 20, its related electronic components, wiring harness, and connectors 21, and the circuit board assembly 20 is then secured to the housing 10 using screws 31. Lead seal screws 40 pass through the threads of the housing 10, through the sealing ring 50 and the circuit board assembly 20, and are tightened into the threads of the lead seal cover 30. Furthermore, the methods for using lead seals (both paper and wire) vary slightly depending on the country and region.

[0056] For the paper seal method, fragile seal paper 41 is used and affixed to the round hole of the outer casing 10 to cover the seal screw 40. This prevents the seal screw 40 from being removed without the fragile seal paper 41 being damaged, thus preventing the replacement of the weighing platform circuit board assembly 20 or the weighing platform wiring harness and connector 21, as well as other components that affect the measurement performance.

[0057] For wire sealing, lead sealing wire 42 and lead sealing head 43 (not limited to plastic lead sealing head and metal lead head) are used. The lead sealing wire 42 passes through the round hole 45 of the lead sealing screw 40 and the round hole of the lead sealing post 43 in sequence, is tightened and converges into the two holes of the lead sealing head 43, and fastens the plastic lead sealing head or uses lead sealing pliers to press the metal lead sealing head, thereby completing the installation of the wire sealing.

[0058] If there are multiple weighing platform circuit boards, the lead sealing method for the other weighing platforms is the same, and will not be repeated here. This embodiment only uses two weighing platforms to illustrate the technical solution of this application, but the application scenarios of the technical solution of this application are not limited by the number of weighing platform circuit board components, and are all within the protection scope of this application.

[0059] For example, a customer purchases a multi-weighing instrument, assuming two weighing platforms. After two years of use and sealing, the power module fails due to an unexpected malfunction and needs replacement. Because the power module is not sealed, the instrument housing can be opened directly without damaging the seal to replace it. If the circuit board of the second weighing platform is damaged and needs replacement, only the seal of the second weighing platform needs to be broken to replace or repair it, without damaging the seal of the first weighing platform.

[0060] This invention relates to a multi-platform lead-sealed structure and a weighing instrument including the same, which separates the metering-related components from other parts and performs individual partial lead sealing, rather than sealing the entire casing. Furthermore, multiple weighing platforms (which can be the same or different platforms) can be repeatedly and independently sealed.

[0061] In summary, the multi-platform lead-seal structure and the weighing instrument including it of the present invention have the following advantages:

[0062] First, the independent lead seal scheme for multiple weighing platforms allows for the maintenance of other components unrelated to metrological performance, such as power modules, display modules, and other communication modules, such as PLC communication and serial communication, without damaging the lead seals, making maintenance more convenient and economical.

[0063] Second, a photoelectric switch was added to the circuit board of the weighing platform. After the lead seal screws are installed, the software can identify the lead seal status of each weighing platform and display the lead seal status of each weighing platform on the instrument software interface.

[0064] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A multi-platform lead seal structure, characterized in that, The multi-scale weighing platform lead-sealing structure includes a housing, multiple scale platform circuit board assemblies, multiple lead-sealing covers, and multiple lead-sealing screws. The scale platform circuit board assemblies are disposed inside the housing. Each lead-sealing cover covers the corresponding scale platform circuit board assembly. The lead-sealing screws pass through the bottom of the housing into the corresponding scale platform circuit board assembly and the lead-sealing cover. The portion of the lead-sealing screw located at the bottom of the housing is sealed with a lead-sealing component.

2. The multi-weighing platform lead seal structure as described in claim 1, characterized in that, Each of the lead seal covers is secured to the housing by a plurality of screws.

3. The multi-platform lead seal structure as described in claim 1, characterized in that, The weighing platform circuit board assembly includes interconnected weighing platform circuit boards, electronic components, weighing platform wiring harnesses, and connectors.

4. The multi-weighing platform lead seal structure as described in claim 1, characterized in that, A sealing ring is provided between the lead-sealing screw and the housing.

5. The multi-platform lead seal structure as described in claim 4, characterized in that, The housing has a first threaded hole, and the lead seal cover has a second threaded hole. The lead seal screw passes through the first threaded hole and the second threaded hole in sequence and is tightened and fixed in the second threaded hole.

6. The multi-weighing platform lead seal structure as described in claim 1, characterized in that, The portion of the lead-sealed screw located at the bottom of the housing is sealed with a paper lead-sealed component.

7. The multi-platform lead seal structure as described in claim 6, characterized in that, The lead seal component of the paper seal is lead seal paper, which is attached to the bottom of the housing and covers the exposed part of the lead seal screw.

8. The multi-weighing platform lead seal structure as described in claim 1, characterized in that, The portion of the lead-sealed screw located at the bottom of the housing is sealed with a lead-sealed component using a wire lead seal.

9. The multi-platform lead seal structure as described in claim 8, characterized in that, The lead seal component of the lead seal includes a lead seal wire, a lead seal head, and a lead seal post. The lead seal post is fixed to the bottom of the housing. The lead seal wire passes through the lead seal screw and the lead seal post in sequence, is tightened, and connected to the lead seal head.

10. A weighing instrument, characterized in that, The weighing instrument includes the multi-platform lead-sealed structure as described in any one of claims 1-9.

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