Shell structure for weighing sensor and electronic balance

Abstract

The utility model relates to a shell structure for a weighing sensor and an electronic balance. The shell structure comprises a bottom shell, a wind shield, a tray and a scale pan, the bottom shell is of an integrated structure and is provided with a base and an enclosing wall arranged along the base, and the bottom shell is provided with an internal calibration mechanism installation area and a weighing sensor installation area in the length direction. The wind shield covers the top end of the enclosing wall and is provided with an avoiding through hole; the tray is arranged at the top bearing end of the weighing sensor bearing frame and is positioned above the wind shield; the scale pan is of an integrated structure and is provided with an object weighing top and a surrounding edge arranged along the object weighing top, the surrounding edge sleeves the top of the enclosing wall, and the object weighing top is elastically connected with the top of the tray in a pressing mode. According to the shell structure, the whole structure is regular, the weighing sensor can be installed, meanwhile, the shell structure can be conveniently opened for maintenance and the like, and the weighing sensor can be prevented from being influenced by external wind.

Description

Technical Field

[0001] This disclosure relates to the field of electronic balance technology, and more particularly to a housing structure for a weighing sensor and an electronic balance. Background Technology

[0002] like Figure 1 As shown, the applicant designed a double-lever weighing sensor 100. The weighing sensor 100 has a relatively regular overall structure, which is constructed into a rectangular structure and has achieved sufficient reduction in the span in the length direction.

[0003] The weighing sensor 100 is a core component of the electronic balance. Based on the regular structure of the weighing sensor 100, this application needs to design a matching housing structure. Under the premise of accommodating the weighing sensor 100, the housing structure can be easily opened for maintenance, and can also form a windproof effect on the weighing sensor 100 during weighing to prevent it from affecting the weighing value. Summary of the Invention

[0004] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, in the first aspect of this disclosure, a housing structure for a weighing sensor is provided, including a bottom shell, a baffle plate, a tray, and a weighing pan;

[0006] The bottom shell is an integral structure, with a base and a wall along the base. The bottom shell is provided with an internal calibration mechanism installation area and a weighing sensor installation area along its length.

[0007] The windbreak panel is installed on the top of the wall and has a clearance hole;

[0008] The tray is mounted on the top bearing end of the weighing sensor support frame and is located above the wind deflector.

[0009] The weighing pan is an integral structure, with a top for weighing the object and a surrounding edge along the top of the object. The surrounding edge is fitted onto the top of the surrounding wall, while the top of the object is elastically pressed against the top of the weighing pan.

[0010] In one feasible implementation, the tray is provided with a mounting hole connected to the top bearing end, and the bottom of the tray is provided with a downwardly extending mounting sleeve at the mounting hole. The clearance through hole is selected to avoid at least one of the top bearing end and the mounting sleeve.

[0011] In one feasible embodiment, the tray is configured as a plate-like structure having two opposite sides along the length direction and two opposite ends along the width direction, wherein both opposite sides and both opposite ends are provided with concave arc segments, and the degree of concavity of the concave arc segments of the two opposite sides is less than the degree of concavity of the concave arc segments of the two opposite ends.

[0012] Preferably, a narrow support leg is formed between adjacent side concave arc segments and end concave arc segments, and an elastic washer for pressing the top of the weighing object is installed on the narrow support leg.

[0013] Preferably, the narrow support leg has a mounting post near the outer end at its top, and the elastic washer is mounted on the mounting post.

[0014] Preferably, the elastic washer has a central through hole for mounting on a mounting post and an annular groove at the top.

[0015] In one possible implementation, the perimeter has an upper inner wall and a lower inner wall, the lower inner wall being recessed outward relative to the upper inner wall.

[0016] Preferably, at least a portion of the lower inner wall is vertically enclosed on the outer wall at the top of the enclosure, and a gap is left between the lower inner wall and the outer wall at the top of the enclosure after the enclosed portion is enclosed.

[0017] Preferably, the upper inner sidewall is aligned vertically with or protrudes inward from the top outer sidewall of the enclosure.

[0018] In one feasible implementation, the bottom shell is provided with reinforcing ribs at both the top and bottom, and the reinforcing ribs are constructed into a regular frame structure and are arranged symmetrically at the top and bottom.

[0019] In one feasible implementation, the top of the bottom shell is provided with a first mounting seat with a connection hole in the weighing sensor mounting area for mounting the weighing sensor base, and the bottom of the bottom shell is also provided with a downwardly protruding mounting sleeve at the first mounting seat. The inner diameter of the mounting sleeve is larger than the inner diameter of the connection hole so that the connection hole is constructed as a countersunk hole.

[0020] In one feasible implementation, a second mounting seat is provided at the four corners of the top of the bottom shell. The second mounting seat protrudes upward relative to the top of the bottom shell, and the bottom of the bottom shell is recessed upward at the second mounting seat to form a receiving area. An elastic bottom pad is installed at the receiving area on the bottom of the bottom shell.

[0021] In one feasible implementation, the wall has recessed transport grooves in the lower middle part of the outer side walls at both ends, and the side walls of the transport grooves are provided with ribs.

[0022] Preferably, the enclosure wall has inner protrusions at both ends corresponding to the positions of the transport troughs.

[0023] A second aspect of this disclosure provides an electronic balance including the aforementioned housing structure for a weighing sensor, wherein the weighing sensor further includes components such as a support frame, a double lever, a top conductor, and a bottom conductor.

[0024] Compared with the prior art, this disclosure includes at least the following beneficial effects:

[0025] The housing structure disclosed herein allows for the partitioned installation of the load cell and the internal calibration mechanism through the bottom shell. The wind baffle covers the top of the bottom shell's enclosure, preventing external wind from entering the bottom shell and affecting the load cell's weighing value during weighing. The weighing pan is movably fitted onto the top of the enclosure by the surrounding edge, and the top of the weighed object elastically presses against the top of the pan. The pan is installed in a detachable manner, allowing the weighing pan to be removed from the pan and the top of the enclosure. The pan can also be removed from the top bearing end of the load cell's support frame, facilitating the opening of the housing structure for easy maintenance or inspection. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0027] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0029] Figure 1 This is a three-dimensional structural diagram of the present disclosure;

[0030] Figure 2 This is a schematic diagram of the upward view of this disclosure;

[0031] Figure 3 This is a cross-sectional schematic diagram of the present disclosure;

[0032] Figure 4 for Figure 3 Enlarged diagram of point A in the diagram;

[0033] Figure 5 A three-dimensional structural diagram of the bottom shell of this disclosure after the weighing sensor is installed;

[0034] Figure 6 This is a partial structural diagram of the bottom shell of this disclosure;

[0035] Figure 7 This is a top view of the tray disclosed herein. Detailed Implementation

[0036] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0037] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0038] Based on the applicant's design concept for the weighing sensor 100, a housing structure is designed to accommodate the weighing sensor 100 while allowing the housing structure to be easily opened for maintenance or inspection, and also to provide a windbreak effect for the weighing sensor 100 during weighing to prevent external wind from affecting the weighing value.

[0039] Therefore, this disclosure provides a housing structure for a weighing sensor. Through the coordinated arrangement and assembly of the bottom shell, wind baffle, tray, and weighing pan, this disclosure enables the partitioned installation of the internal calibration mechanism and the weighing sensor. At the same time, the wind baffle can effectively prevent external wind from entering the bottom shell and affecting the weighing value. The unique design of the tray and weighing pan allows the bottom shell to be easily opened for maintenance and inspection.

[0040] The housing structure for the weighing sensor will be described in detail below through specific embodiments.

[0041] Reference Figures 1 to 7 As shown, this disclosure provides a housing structure for a weighing sensor, including a bottom shell 1, a wind baffle 2, a tray 3, and a weighing pan 4.

[0042] The bottom shell 1 is an integral structure with sufficient wall thickness to meet the installation strength requirements. It has a base 101 and a surrounding wall 102 set along the base 101. The surrounding wall 102 is continuously set along the edge of the base 101, thus constructing a bottom shell 1 with only an opening at the top. The space enclosed by the bottom shell 1 has an inner calibration mechanism installation area 103 and a weighing sensor installation area 104 along the length direction. The inner calibration mechanism (not shown) and the weighing sensor 100 are installed in separate areas, which are connected to each other but do not interfere with each other.

[0043] The windbreak plate 2 covers the top of the enclosure wall 102 and is provided with a clearance through hole 201. The windbreak plate 2 is plate-shaped, and its edge shape basically matches the shape of the inner side wall at the top of the enclosure wall 102. The inner side wall of the enclosure wall 102 is provided with a step 1021 continuously arranged around the enclosure wall 102 at the top. The windbreak plate 2 overlaps with the step 1021 through its edge. The overlapped windbreak plate 2 forms a cover over the top opening of the enclosure wall 102. The clearance through hole 201 located approximately in the center of the windbreak plate 2 is used for components that need to pass through, so as to avoid the passing components.

[0044] The tray 3 is detachably mounted on the top bearing end 501 of the weighing sensor support frame 5 and is located above the wind baffle 2. The tray 3 is mainly used to install and connect to the top bearing end 501 and simultaneously bear the pressure of the weighing pan 4, thereby realizing the transmission of weight force.

[0045] The weighing pan 4 is an integral structure, with a flat weighing top 401 and a surrounding edge 402 along the edge of the weighing top 401. The surrounding edge 402 is movably fitted onto the top of the wall 102, while the weighing top 401 is elastically pressed against the top of the tray 3. After being movably fitted, the surrounding edge 402 is not close to the outer wall of the top of the wall 102, but there is a gap between it and the outer wall of the top of the wall 102, so as not to hinder the slight vertical displacement of the weighing pan 4 during weighing.

[0046] The housing structure disclosed herein allows each component to be individually manufactured and molded to achieve the desired structural shape. Furthermore, due to the individual molding process, different materials can be matched according to requirements, resulting in a high degree of design freedom. After assembly, it enables the partitioned installation of the internal calibration mechanism and the load cell 100. More importantly, the simple wind baffle 2 design prevents external wind from interfering with the weighing of the internal load cell 100. In addition, the housing structure itself is easy to open, facilitating daily inspection, maintenance, and inspection.

[0047] Specifically, in this embodiment, the tray 3 is provided with a mounting hole 301 connected to the top bearing end 502. A downwardly extending mounting sleeve 302 is provided at the bottom of the tray 3 at the mounting hole 301. The clearance through hole 201 can be selected to avoid at least one of the top bearing end 501 or the mounting sleeve 302. In this embodiment, the top bearing end 501 is selected for clearance. In this case, the top bearing end 501 fits into the clearance through hole 201. After fitting, there is a gap between the clearance through hole 201 and the top bearing end 501, which does not hinder the slight vertical displacement of the weighing sensor support frame 5. Of course, in other embodiments, the mounting sleeve 302 can also be selected for clearance, or a portion of the top bearing end 501 and a portion of the mounting sleeve 302 can be selected for clearance together. Compared to selecting the lower top bearing end 501 for clearance in this embodiment, the overall vertical height of the electronic balance can be minimized, further reducing its volume.

[0048] Regarding the specific design and construction of the tray 3, in this embodiment, the tray 3 is constructed as a plate-like structure with a certain thickness, which meets the requirements for pressing and bearing capacity. It has two opposite sides along the length direction and two opposite ends along the width direction. Both the two opposite sides and the two opposite ends are provided with concave arc segments 303, and the degree of concavity of the concave arc segments on the two opposite sides is less than that on the two opposite ends. Thus, narrow support legs 304 can be formed between adjacent side concave arc segments and end concave arc segments. Elastic washers 6 are installed on the narrow support legs 304 for pressing against the top 401 of the object being weighed. It should be noted that the tray 3 has a total of four narrow support legs 304. The elastic washers 6 on these legs can form a relatively balanced bearing capacity on the weighing pan 4, thus preventing excessive local stress that could affect weighing accuracy.

[0049] In this embodiment, a locking post 305 is provided at the top near the outer end of the narrow support leg 304, and the elastic washer 6 is locked onto the locking post 305. Specifically, in this embodiment, the locking post 305 and the narrow support leg 304, i.e., the tray 3, are integrally formed, eliminating the need for additional installation and connection of the locking post 305 to the narrow support leg 304. After the elastic washer 6 is locked onto the locking post 305, it can be firmly locked onto the locking post 305 due to its elastic contraction characteristics and will not easily fall off.

[0050] Specifically, the elastic washer 6 in this embodiment has been optimized and improved as follows: the elastic washer 6 has a central through hole 601 for clamping onto the clamping post 305, and an annular groove 602 on the top. This type of elastic washer has a wider radial span to meet the crimping strength, while the annular groove 602 prevents the entire top surface from being completely compacted, maintaining sufficient elasticity after crimping to meet elastic crimping requirements.

[0051] In this embodiment, the enclosure 402 has an upper inner wall 4021 and a lower inner wall 4022. The lower inner wall 4022 is recessed outward relative to the upper inner wall 4021, thereby forming a vertically expanded area that will not touch the top of the enclosure 102 during weighing. At least part of the lower inner wall 4022 is vertically enclosed on the outer wall of the top of the enclosure 102, thus ensuring that the top of the enclosure 102 is always enclosed and not exposed. After enclosing, there is a gap between the lower inner wall 4022 and the outer wall of the top of the enclosure 102, so that they do not interfere with each other.

[0052] In this embodiment, the lower inner sidewall 4022 forms a cover over the top outer wall of the enclosure 102. The cover can be understood as the lower inner sidewall 4022 fitting over the top outer wall of the enclosure 102, which, together with the inner sidewall 4021 and the top of the weighing object 401, forms a cover over the top of the enclosure 102 and the internal components.

[0053] It should be noted that the upper inner sidewall 4021 is aligned vertically with the top outer sidewall of the enclosure 102 or protrudes inward from the top outer sidewall of the enclosure. With this structure, the upper inner sidewall 4021 can limit the displacement of the weighing pan 4 in the vertical direction, thus avoiding excessive weighing and damage to the electronic balance.

[0054] In this embodiment, the bottom shell 1 is provided with reinforcing ribs 105 at both the top and bottom. The reinforcing ribs 105 are constructed into a regular frame structure and are arranged symmetrically at the top and bottom, which improves strength while making it easy to form.

[0055] The top of the bottom shell 1 has a first mounting base 106 with a connection hole in the load cell mounting area 104 for mounting the load cell base 7. The bottom of the bottom shell 1 also has a protruding mounting sleeve (unmarked) at the first mounting base 106. The inner diameter of the mounting sleeve is larger than the inner diameter of the connection hole so that the connection hole is configured as a countersunk hole 107. The separate configuration of the first mounting base 106 and the mounting sleeve enhances the connection strength and makes the installation more secure and reliable. At the same time, the countersunk hole 107 facilitates the tightening operation of the countersunk screw.

[0056] Furthermore, a second mounting seat 108 is provided at the four corners of the top of the bottom shell 1. The second mounting seat 108 protrudes upward relative to the top of the bottom shell 1, and the bottom of the bottom shell 1 is recessed upward at the second mounting seat 108 to form a receiving area. An elastic bottom pad 8 is installed at the receiving area of ​​the bottom of the bottom shell 1.

[0057] In this embodiment, the bottom shell 1 is recessed and convex at the four corners of the bottom. After the elastic bottom pad 8 is installed, the vertical height span can be reduced as much as possible. At the same time, the installation strength can be guaranteed by the protrusion of the second mounting seat 108.

[0058] In this embodiment, the enclosure 102 has recessed transport grooves 109 in the lower middle part of its outer side walls at both ends, and the side walls of the transport grooves 109 are provided with ribs 9 to increase friction. With the above structural configuration, the transport grooves 109 provide a gripping position during transport, facilitating transport operations.

[0059] Furthermore, the enclosure 102 has inward protrusions (unmarked) at both ends of its inner sidewalls corresponding to the positions of the transport groove 109, thereby ensuring the wall thickness strength at the transport groove 109.

[0060] This disclosure also provides an electronic balance, including the housing structure for the weighing sensor described above. Specifically, the electronic balance of this disclosure also includes a weighing sensor 100, an internal calibration mechanism, a circuit system, and other components.

[0061] In this disclosure, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0062] In the description of this disclosure, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0063] In the description of this specification, the terms "this embodiment," "this embodiment," "other embodiments," "specific embodiments," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The above are merely preferred embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A housing structure for a weighing sensor, characterized in that: Includes the base, wind deflector, tray, and weighing pan; The bottom shell is an integral structure, with a base and a wall along the base. The bottom shell is provided with an internal calibration mechanism installation area and a weighing sensor installation area along its length. The windbreak panel is installed on the top of the wall and has a clearance hole; The tray is mounted on the top bearing end of the weighing sensor support frame and is located above the wind deflector. The weighing pan is an integral structure, with a top for weighing the object and a surrounding edge along the top of the object. The surrounding edge is fitted onto the top of the surrounding wall, while the top of the object is elastically pressed against the top of the weighing pan.

2. The housing structure for a weighing sensor according to claim 1, characterized in that, The tray is provided with a mounting hole at the top bearing end, and a mounting sleeve extending downward at the mounting hole is provided at the bottom of the tray. The clearance through hole is provided to avoid at least one of the top bearing end and the mounting sleeve.

3. The housing structure for a weighing sensor according to claim 1, characterized in that, The tray is constructed as a plate-like structure, having two opposite sides along the length direction and two opposite ends along the width direction, wherein both opposite sides and two opposite ends are provided with concave arc segments, and the degree of concavity of the concave arc segments of the two opposite sides is less than the degree of concavity of the concave arc segments of the two opposite ends.

4. The housing structure for a weighing sensor according to claim 3, characterized in that, A narrow support leg is formed between the adjacent concave arc segment on the side and the concave arc segment at the end. An elastic washer for pressing the top of the weighing object is installed on the narrow support leg. The elastic washer has an annular groove at the top.

5. The housing structure for a weighing sensor according to claim 1, characterized in that, The surrounding edge has an upper inner sidewall and a lower inner sidewall, and the lower inner sidewall is recessed outward relative to the upper inner sidewall. At least a portion of the lower inner wall is vertically enclosed on the outer wall at the top of the enclosure, and a gap is left between the lower inner wall and the outer wall at the top of the enclosure after the enclosed portion is enclosed.

6. The housing structure for a weighing sensor according to claim 5, characterized in that, The upper inner sidewall is aligned vertically with or protrudes inward from the top outer sidewall of the enclosure.

7. The housing structure for a weighing sensor according to claim 1, characterized in that, The top of the bottom shell is provided with a first mounting seat with a connection hole in the weighing sensor mounting area for mounting the weighing sensor base. The bottom of the bottom shell is also provided with a downwardly protruding mounting sleeve at the first mounting seat. The inner diameter of the mounting sleeve is larger than the inner diameter of the connection hole so that the connection hole is constructed as a countersunk hole.

8. The housing structure for a weighing sensor according to claim 1 or 7, characterized in that, The bottom shell has a second mounting seat at each of the four corners. The second mounting seat protrudes upward relative to the top of the bottom shell. The bottom of the bottom shell is recessed upward at the second mounting seat to form a receiving area. An elastic bottom pad is installed in the receiving area at the bottom of the bottom shell.

9. The housing structure for a weighing sensor according to claim 1, characterized in that, The wall has recessed transport grooves in the lower middle part of the outer side walls at both ends, and the side walls of the transport grooves are provided with ribs.

10. An electronic balance comprising the housing structure for a weighing sensor as claimed in any one of claims 1 to 9.

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