Hand-held electronic scale

Abstract

The application discloses a portable electronic scale, wherein the portable electronic scale comprises a shell, a weighing sensor and a suspension device, the weighing sensor is installed in the shell, and the portable electronic scale further comprises a limiting mechanism and a steering mechanism which are installed in the shell; the suspension device comprises a traction rope, the traction rope comprises a connecting section and a steering section which are connected with each other, the end of the connecting section is fixedly connected to a sensing end of the weighing sensor, and the steering section and the connecting section are arranged around the steering mechanism so that the connecting section is perpendicular to the sensing end of the weighing sensor; the limiting mechanism clamps the connecting section in a first direction and a second direction, and the first direction, the second direction and the extension direction of the connecting section are perpendicular to each other. The portable electronic scale can eliminate the measurement error caused by improper force direction, and greatly improves the measurement accuracy.

Description

Technical Field

[0001] This application relates to the field of portable scale technology, and in particular to a portable electronic scale. Background Technology

[0002] Handheld electronic scales, as portable weighing tools, are widely used in daily shopping, logistics transportation, and travel. Their core function is to convert the weight of an item into an electrical signal through sensors, ultimately presenting it in digital form. Currently, most handheld electronic scales on the market use strain gauge load cells as their core component. These sensors operate based on the metal resistance strain effect: when an external force is applied to the sensing end, the sensing end deforms, causing a change in its resistance value, which is then converted into an electrical signal proportional to the weight through a measuring circuit.

[0003] However, because strain gauge sensors are highly sensitive to the direction of force, their design requires that the external force be strictly perpendicular to the sensor's axis. If the applied force deviates from the perpendicular direction to the sensor (e.g., the wrist is tilted left or right or up and down), the sensor's elastic body will bear a non-perpendicular component of the force, causing the deformation of the strain gauge to fail to accurately reflect the actual weight. This problem is particularly prominent in scenarios requiring precise weighing, such as luggage and parcels. For example, air freight has strict weight limits; if the weighing error exceeds the allowable range due to improper force direction, it may lead to overweight fines or the hassle of repacking. Furthermore, the express delivery industry has extremely high requirements for the accuracy of billing weight; weighing errors directly affect shipping cost calculations and can even cause customer disputes.

[0004] Existing solutions mainly rely on users manually adjusting the direction of force application, such as using a level to assist users in adjusting the direction of force application. However, in actual operation, users are prone to insufficient strength or unstable posture, which can easily cause the direction of force application to deviate, making it difficult to ensure that the direction of force application is always perpendicular to the weighing sensor.

[0005] The above content is only used to assist in understanding the technical solution of the utility model and does not represent an admission that the above content is prior art. Utility Model Content

[0006] In view of the above problems, this utility model proposes a handheld electronic scale, which aims to solve the technical problem that handheld electronic scales are prone to measurement errors due to improper force application direction, resulting in low measurement accuracy.

[0007] To achieve the above objectives, the portable electronic scale proposed in this utility model includes a housing, a weighing sensor, and a suspension device. The weighing sensor is installed inside the housing. The portable electronic scale also includes a steering mechanism installed inside the housing.

[0008] The suspension device includes a traction rope, which includes a connecting section and a steering section connected to each other. The end of the connecting section is fixedly connected to the sensing end of the load cell. The steering mechanism is wound around the connection between the steering section and the connecting section so that the connecting section is perpendicular to the sensing end of the load cell.

[0009] In one embodiment, the portable electronic scale further includes a limiting mechanism located within the housing, the connecting segment abuts against the steering mechanism in a first direction, and the limiting mechanism limits the connecting segment in a second direction, wherein the first direction, the second direction, and the extension direction of the connecting segment are perpendicular to each other.

[0010] In one embodiment, the limiting mechanism limits the steering segment in the second direction.

[0011] In one embodiment, the housing includes a detachably connectable first housing and a second housing; the steering mechanism is mounted on the first housing and / or the second housing; the limiting mechanism includes a first limiting part and a second limiting part disposed in the first housing, and a third limiting part and a fourth limiting part disposed in the second housing; after the first housing and the second housing are joined, the first limiting part and the third limiting part clamp the connecting segment, and the second limiting part and the fourth limiting part clamp the steering segment.

[0012] In one embodiment, the traction rope further includes a hook section connected to the end of the steering section away from the connecting section; the portable electronic scale further includes a positioning mechanism installed in the housing, the positioning mechanism being located on the side of the steering mechanism away from the connecting section, and the hook section being wound around the positioning mechanism at the connection point between the steering section and the steering section.

[0013] In one embodiment, both the steering mechanism and the positioning mechanism have an arcuate surface around which the traction rope is wound.

[0014] In one embodiment, the limiting mechanism includes an arc-shaped plate and a clamping plate connected to the inner wall of the housing, and both the steering mechanism and the positioning mechanism are cylindrical; the arc-shaped plate is opposite to the clamping plate and clamps the connecting section, and the arc-shaped plate, the steering mechanism, and the positioning mechanism together clamp the steering section.

[0015] In one embodiment, the housing has an extension hole, the connecting section and the hook section are arranged in parallel, and the hook section extends out of the housing through the extension hole.

[0016] In one embodiment, the weighing sensor is a strain gauge sensor, which has a suspended beam sensing end, and the end of the connecting section is fixedly connected to the suspended beam sensing end.

[0017] In one embodiment, the suspension device further includes a fixing member, one end of the traction rope is fixedly connected to the fixing member, the fixing member is detachably connected to the sensing end of the suspension beam, and the vertical limiting channel is provided adjacent to the end of the fixing member.

[0018] In one embodiment, the portable electronic scale further includes a display module and / or a wireless ranging module. A control board is provided inside the housing. The control board is electrically connected to the weighing sensor, the display module, and the wireless ranging module. The housing has a display window corresponding to the display module and a ranging port corresponding to the wireless ranging module.

[0019] This portable electronic scale features a steering mechanism within its housing. This mechanism secures the end of the traction rope's connecting section to the sensing end of the load cell. The steering mechanism winds around the connection between the steering section and the connecting section of the traction rope, ensuring the connecting section is perpendicular to the sensing end of the load cell. This steering mechanism restricts the extension direction of the end of the traction rope connected to the sensing end during weighing to a direction perpendicular to the sensing end, ensuring the load cell's sensing end only bears vertical tension. In luggage weighing scenarios, users do not need to consciously maintain a lifting posture. Regardless of how the user sways in the winding direction of the steering section, the extension direction of the connecting section of the traction rope remains perpendicular to the sensing end of the load cell, allowing the sensor to obtain accurate force data, improving measurement accuracy and the reliability of weighing results. This is particularly suitable for applications with stringent weight accuracy requirements, such as air freight and express delivery billing. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of an embodiment of the portable electronic scale of this utility model is shown;

[0022] Figure 2 for Figure 1 Exploded view of a portable electronic scale;

[0023] Figure 3 for Figure 1 Cross-sectional view of a medium-sized portable electronic scale;

[0024] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0025] Figure 5for Figure 1 Longitudinal sectional view of a medium-sized portable electronic scale;

[0026] Figure 6 for Figure 1 Assembly diagram of a portable electronic scale after removing the second casing;

[0027] Figure 7 for Figure 6 A magnified view of a section at point B in the middle;

[0028] Figure 8 This is a schematic diagram of the structure of the first shell of the portable electronic scale of this utility model;

[0029] Figure 9 This is a schematic diagram of the structure of the second shell of the portable electronic scale of this utility model.

[0030] Explanation of icon numbers:

[0031] 100 case 110 protruding hole 120 First Shell 130 Second shell 200 Weighing sensor 210 Cantilever induction terminal 300 Suspension device 310 tow rope 311 Connecting segment 312 Turning section 313 Connecting section 320 Fasteners 400 Limiting mechanism 411 First limiting section 412 Third limiting section 421 Second limiting part 422 Fourth limiting part 430 Steering mechanism 440 Positioning mechanism 450 curved plate 460 plywood

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In addition, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those of ordinary skill in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0035] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text is to include three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies both A and B.

[0038] This utility model proposes a portable electronic scale.

[0039] In this embodiment of the utility model, please refer to Figures 1 to 7 The portable electronic scale includes a housing 100, a weighing sensor 200 and a suspension device 300. The housing 100 has an extension hole 110. The weighing sensor 200 is installed inside the housing 100. The portable electronic scale also includes a steering mechanism 430 installed inside the housing 100.

[0040] The suspension device 300 includes a traction rope 310, which includes a connecting section 311 and a steering section 312 connected to each other. The end of the connecting section 311 is fixedly connected to the sensing end of the load cell 200. A steering mechanism 430 is wound around the connection between the steering section 312 and the connecting section 311 so that the connecting section 311 is perpendicular to the sensing end of the load cell 200.

[0041] In this embodiment, the shape and form of the housing 100 can be varied. For example, the overall outer contour of the housing 100 can be elongated, rectangular, etc. The shape and size of the housing 100 can be selected and designed according to actual needs, and no specific limitation is made here. In practice, the housing 100 is provided with an extension hole 110 for the traction rope 310 to pass through. The shape of the extension hole 110 can be varied, such as circular, elongated, elliptical, etc. The weighing sensor 200 is a device that converts a mass signal into a measurable electrical signal output.

[0042] In one specific embodiment, the load cell 200 is a strain gauge sensor, which has a suspended beam sensing end 210, and the end of the connecting section 311 is fixedly connected to the suspended beam sensing end 210. A strain gauge sensor is a sensor that works based on the metal resistance strain effect. Specifically, it can be implemented using a combination structure of an elastic body and a strain gauge. When the elastic body is subjected to force, it deforms, and the strain gauge converts the deformation into a resistance change signal. Compared with other load cells 200, the strain gauge sensor offers moderate cost, simple structure, and high measurement accuracy. It should be noted that the suspended beam sensing end 210 refers to an elastic cantilever structure with at least one free end; that is, one end of the suspended beam sensing end 210 is relatively fixed, while the other end can freely and elastically deform. This free end is connected to the connecting section 311 of the traction rope 310 to transmit external force. The specific form of the suspended beam sensing end 210 can be varied and is not limited here, as long as it can convert the deformation at the suspended beam sensing end 210 into a digital signal.

[0043] It is understood that the traction rope 310 refers to a flexible strip structure, which can be made of materials such as nylon, polyester fiber, and leather, and its tensile strength must be more than three times the maximum weighing value. By using the traction rope 310, compared with traction components such as rigid columns, the torque caused by force deviation can be effectively eliminated, ensuring measurement accuracy. Specifically, the sensing end has a mounting hole, and the traction rope 310 can be fixedly connected to the mounting hole of the sensing end through structures such as bolts, screws, and studs. Among them, the connecting section 311 refers to the straight extension of the traction rope 310 that is directly connected to the weighing sensor 200. The turning section 312 refers to the transition section where the traction rope 310 changes direction through the turning mechanism 430, which realizes the turning of the traction rope 310.

[0044] The steering mechanism is a rigid structure fixed to the inner wall of the housing 100. The steering mechanism 430 can be integrally formed with the housing 100 or formed separately and connected. Specifically, the steering mechanism 430 can be a fixed pulley or a movable pulley. It should be noted that the traction rope 310 is wound around the steering mechanism 430, meaning that the extension direction of the traction rope can be changed through the steering mechanism 430. Thus, through the action of the steering mechanism 430, even if the user applies force in a deviated direction in the winding direction of the steering section 312, the extension direction of the connecting section 311 will remain perpendicular to the sensing end of the load cell 200, ensuring that the force of the traction rope 310 always acts perpendicularly on the load cell 200.

[0045] In actual products, the portable electronic scale also includes a control board and a battery housed within the casing. The control board is electrically connected to the load cell 200 to transmit electrical signals and achieve data transmission. The battery is electrically connected to the control board to power it. A switch button connected to the control board can be provided on the casing to control the weighing function on and off.

[0046] This portable electronic scale utilizes a steering mechanism 430 within the housing 100. This mechanism secures the end of the connecting section 311 of the traction rope 310 to the sensing end of the load cell 200. The steering mechanism 430 is wound around the connection between the steering section 312 and the connecting section 311 of the traction rope 310, ensuring that the connecting section 311 is perpendicular to the sensing end of the load cell 200. Thus, by changing the direction of the steering mechanism 430, the extension direction of the end of the traction rope 310 connected to the sensing end during the weighing process is restricted to a direction perpendicular to the sensing end, ensuring that the sensing end of the load cell 200 only bears vertical tension. In luggage weighing scenarios, users do not need to deliberately maintain a lifting posture. That is, no matter how the user sways in the winding direction of the turning section 312, the extension direction of the connecting section 311 of the traction rope 310 is always kept in the direction perpendicular to the sensing end of the weighing sensor 200, so that the sensor obtains accurate force data, improves measurement accuracy and the reliability of weighing results, and is particularly suitable for fields with strict requirements for weight accuracy, such as air freight and express delivery billing.

[0047] Furthermore, the portable electronic scale also includes a limiting mechanism 400 located within the housing 100, a connecting segment 311 abutting against a steering mechanism 430 in a first direction, and a limiting mechanism 400 limiting the connecting segment 311 in a second direction. The first direction, the second direction, and the extension direction of the connecting segment 311 are perpendicular to each other.

[0048] In this configuration, the first direction, the second direction, and the extension direction of the connecting segment 311 are all perpendicular to each other. When the connecting segment 311 extends vertically, the first direction can specifically be a front-back direction, and the second direction can specifically be a left-right direction. Of course, the first and second directions can also be two mutually perpendicular oblique directions. For ease of explanation, as shown... Figure 6 As shown, the following text will use the first direction as the left-right direction and the second direction as the front-back direction for illustrative purposes.

[0049] It is understandable that since the connecting section 311 abuts against the steering mechanism 430 in the first direction, when the traction rope 310 is under force, the connection between the connecting section 311 and the steering section 312 will always press against the steering mechanism. Therefore, there is no need to limit the connecting section 311 in the first direction (left-right direction). Therefore, by limiting the traction rope 311 in the second direction, the connecting section 311 can be prevented from shifting in the second direction (front-back direction). This prevents the load cell 200 from shifting laterally in the direction perpendicular to the connecting section 311. Specifically, when the user pulls the traction rope 310, the constraint effect of the limiting mechanism 400 and the steering mechanism in two orthogonal directions in the horizontal plane prevents the traction rope 310 from shifting laterally. Therefore, no matter how the user pulls, the sensing end of the load cell 200 always bears the tension in the vertical direction, which can further eliminate the measurement error caused by the force deviation in the second direction. Therefore, this structure can effectively eliminate the measurement error caused by the force deviation, greatly improving the measurement accuracy and the reliability of the weighing results.

[0050] The limiting mechanism 400 limits the connecting section 311 in the second direction. This limiting mechanism 400 can be a limiting channel, a limiting protrusion and a limiting groove clamping the connecting section 311, or a limiting groove provided on the steering mechanism 430. It is understood that while the limiting mechanism 400 limits the connecting section 311 in the second direction, it does not completely clamp and fix the connecting section 311; a gap of no more than 1 mm is allowed to allow the connecting section 311 to move in the direction perpendicular to the load cell 200.

[0051] Furthermore, the limiting mechanism 400 limits the steering segment 412 in the second direction.

[0052] It is understandable that when the traction rope 310 is under force, even if the steering segment 412 sways in the winding direction relative to the steering mechanism 430, the connection between the steering segment 412 and the steering segment 312 will always abut against the steering mechanism 430. Therefore, there is no need to limit the steering segment 412 in the first direction (left-right direction). By limiting the displacement of the steering segment 412 perpendicular to its direction of movement, the offset of the steering segment 412 in the second direction can be avoided from affecting the connecting segment 311, which can further improve the detection accuracy of the weighing sensor 200. The limiting mechanism 400 can be a limiting channel, a limiting protrusion and a limiting groove for clamping the connecting segment 311, or a limiting groove provided on the steering mechanism 430, as long as it can limit the steering segment 312 in the second direction. It is understandable that the limiting mechanism 400 limits the steering segment 312 in the second direction, but it does not completely clamp and fix the steering segment 312, allowing a gap of no more than 1 mm to allow the steering segment 312 to move in its extension direction.

[0053] In one embodiment, such as Figures 1 to 9 As shown, the housing 100 includes a detachable first housing 120 and a second housing 130; a steering mechanism 430, a positioning mechanism 440, an arc plate 450, and a clamping plate 460 are installed on the first housing 120 and / or the second housing 130; the limiting mechanism includes a first limiting part 411 and a second limiting part 421, and a third limiting part 412 and a fourth limiting part 422 provided in the second housing 130; after the first housing 120 and the second housing 130 are joined, the first limiting part 411 and the third limiting part 412 clamp the connecting section 311, and the second limiting part 421 and the fourth limiting part 422 clamp the steering section 312.

[0054] The first shell 120 and the second shell 130 can be connected by clips or screws to facilitate the installation and maintenance of internal components. The first limiting part 411 and the third limiting part 412 clamping the connecting section 311 restricts the lateral displacement of the connecting section 311 of the traction rope 310. For example, a limiting protrusion is provided in the first shell 120, and a limiting groove is provided in the second shell 130, forming a clamping space after splicing. The second limiting part 421 and the fourth limiting part 422 clamping the turning section 312 restricts the lateral displacement of the turning section 312 of the traction rope 310. For example, a limiting protrusion is provided in the turning channel 420 of the first shell 120, and a corresponding limiting groove is provided in the second shell 130, forming a smoothly transitioning guide channel after splicing.

[0055] Specifically, the first shell 120 and the second shell 130 are detachably connected for quick assembly and disassembly. The split-type installation design of the internal limiting mechanism 400 ensures that the traction rope 310 is precisely constrained after splicing. When the first shell 120 and the second shell 130 are spliced, the first limiting part 411 of the first shell 120 and the third limiting part 412 of the second shell 130 together limit the connecting section 311, while the second limiting part 421 and the fourth limiting part 422 of the second shell 130 limit the turning section 312. This ensures that the connecting section 311 of the traction rope is subjected to force perpendicularly to the load cell 200.

[0056] Furthermore, such as Figure 2 , Figure 6 and Figure 7 As shown, the traction rope 310 also includes a hook section 313 connected to the end of the steering section 312 away from the connecting section 311. The portable electronic scale also includes a positioning mechanism 440 installed in the housing 100. The positioning mechanism 440 is located on the side of the steering mechanism 430 away from the connecting section 311. The hook section 313 is wound around the positioning mechanism 440 at the connection between the steering section 312 and the hook section 313.

[0057] In this embodiment, the attachment section 313 refers to the suspension part where the traction rope 310 is connected to the item to be weighed. It is arranged parallel to the connecting section 311 to facilitate connection to suitcases, bags, or other items to be weighed. Specifically, the attachment section 313 can be connected to hooks or similar structures for easy attachment to the item. The positioning mechanism 440 can be used to position the attachment section 313 and also change its extension direction relative to the steering section 312.

[0058] The positioning mechanism 440 can be a fixed pulley or a movable pulley. By setting the positioning mechanism 440, the path of the traction rope 310 extending from the turning section 312 to the outside of the housing 100 is replanned. The traction rope 310 undergoes two turns, which can further prevent the sway at the hook section 313 from affecting the connecting section 311.

[0059] When the traction rope 310 is subjected to external force, its movement trajectory is restricted within the guide structure formed by the positioning mechanism 440 and the steering mechanism 430. This structural design not only further ensures the positioning accuracy of the connecting section 311 of the traction rope 310 in the direction perpendicular to the load cell, but also enables the smooth extension of the hook section 313 of the traction rope 310 outward from the housing 100.

[0060] Furthermore, the housing 100 has an extension hole 110, the hook section 313 and the connecting section 311 are arranged in parallel, and the hook section 313 extends out of the housing 100 through the extension hole 110.

[0061] In this embodiment, the protrusion hole 110 and the connecting section 311 can be located on the same side or opposite side of the load cell. When the traction rope 310 is subjected to external tension, the connecting section 311 maintains a force state perpendicular to the load cell through the steering mechanism, preventing the lateral force from being transmitted to the load cell 200. This eliminates measurement errors caused by the tilt of the traction rope 310 when the traction rope 310 is suspending an item outside the housing 100. When the user suspends an item and the traction rope 310 swings left and right or tilts forward and backward, the connecting section 311 generates a force only perpendicular to the load cell 200 due to the action of the steering mechanism 430 and the limiting mechanism 400. This solution maintains a force state perpendicular to the load cell 200 during the tensioning process of the traction rope 310 through the coordinated action of the steering mechanism 430 and the limiting mechanism 440, eliminating lateral force interference without user intervention and effectively solving the weighing error problem caused by the tilt of the traction rope 310.

[0062] In conjunction with the above embodiment having positioning mechanism 440, please further refer to... Figures 2 to 9 Both the steering mechanism 430 and the positioning mechanism 440 have arc surfaces for the traction rope 310 to be wound around.

[0063] The arc surface formed on the steering section serves to create line contact with the traction rope 310, preventing localized stress concentration and subsequent rope wear. The steering mechanism 430 is a steering component located at the connection between the connecting section 311 and the steering section 312. It can be implemented using a fixed cylinder, a rotatable roller, or similar structure. This arc surface contact reduces the frictional resistance of the traction rope 310 during steering. The positioning mechanism 440 forms the steering component at the connection between the steering section 312 and the connecting section 313. It can also be implemented using a fixed cylinder, a rotatable roller, or similar structure. This arc surface contact also reduces the frictional resistance of the traction rope 310 during steering.

[0064] Specifically, when the traction rope 310 is subjected to an external force, the connection between the connecting section 311 and the steering section 312 is steered by the arc surface of the steering mechanism 430, and the connection between the steering section 312 and the connecting section 313 is guided by the arc surface of the positioning mechanism 440. During this process, the direction of movement of the traction rope 310 is constrained by the arc surfaces of the two steering parts, reducing frictional resistance when the traction rope 310 is steered. Simultaneously, the arc-shaped support structure formed by the steering mechanism 430 and the positioning mechanism 440 effectively eliminates the torque caused by the deviation of the traction rope 310 in the non-gravity direction, ensuring that the direction of force application is always perpendicular to the sensing end of the weighing sensor 200.

[0065] Furthermore, such as Figures 6 to 9As shown, the limiting mechanism 400 also includes an arc-shaped plate 450 and a clamping plate 460 connected to the inner wall of the housing 100. The steering mechanism 430 and the positioning mechanism 440 are both cylindrical. The arc-shaped plate 450 is opposite to the clamping plate 460 and the steering mechanism 430 and clamps the connecting section 411. The arc-shaped plate 450, the steering mechanism 430 and the positioning mechanism 440 together clamp the steering section 312.

[0066] The arc-shaped plate 450 refers to a plate-like structure with a curved profile, which matches the movement trajectory of the traction rope 310 to form the guide surface of the steering channel 420. The clamping plate 460 refers to a plate-like structure used to clamp the traction rope 310. To ensure connection strength, the arc-shaped plate 450, the clamping plate 460, and the housing 100 may optionally be integrally formed. The cylinder refers to a columnar structure with a circular cross-section.

[0067] Specifically, the arc-shaped plate 450 and the clamping plate 460 form the constraint boundary of the connecting section 311, and the connecting section 311 of the traction rope 310 only retains the degree of freedom in the direction perpendicular to the load cell 200. The steering mechanism 430 is located in the transition area between the connecting section 311 and the steering section 312, and its cylindrical surface forms a tangential guide with the contact point between it and the traction rope 310. The positioning mechanism 440 is located in the transition area between the steering section 312 and the hook-up section 313, and its cylindrical surface forms a sliding support with the contact point between it and the traction rope 310. The curved profile of the arc plate 450, together with the cylindrical surfaces of the steering mechanism 430 and the positioning mechanism 440, forms a three-dimensional steering space trajectory, allowing the traction rope 310 to smoothly transition and abut against the steering mechanism 430 and the positioning mechanism 440 during the steering process. This prevents the traction rope 310 from rebounding to the outside away from the steering mechanism 430 and the positioning mechanism 440, thus enabling the traction rope 310 to form a stable motion trajectory during the steering process. This ensures that the connecting section 311 of the traction rope 310 always remains perpendicular to the load cell 200 under force, further improving the measurement accuracy and the reliability of the weighing results.

[0068] In one embodiment, such as Figure 1 , Figure 2 , Figures 6 to 9 As shown, the housing 100 extends in a long strip shape, and the extension hole 110 extends in a long strip shape along the length direction of the housing 100. The width of the traction rope 310 is smaller than the width of the extension hole 110 so that the traction rope 310 can move laterally within the extension hole 110.

[0069] The elongated shape of the housing 100 refers to its extension along the longitudinal axis to form a rod-like structure. Specifically, it can be a rectangular or cylindrical housing 100, facilitating grip and providing internal space to accommodate the weighing sensor 200 and the limiting mechanism 400. The elongated shape of the protruding hole 110 refers to the hole extending along the length of the housing 100 to form a narrow opening, increasing the lateral range of motion of the traction rope 310 and improving its usability. The width of the traction rope 310 being smaller than the width of the protruding hole 110 means that the diameter or cross-sectional dimension of the traction rope 310 is smaller than the lateral dimension of the opening, allowing the traction rope 310 to swing freely within the protruding hole 110.

[0070] In one embodiment, please refer to Figure 6 and Figure 7 The suspension device 300 also includes a fixing member 320, one end of the traction rope 310 is fixedly connected to the fixing member 320, the fixing member 320 is detachably connected to the suspension beam sensing end 210, and the steering mechanism 430 is provided near the end of the fixing member 320.

[0071] The fixing component 320 is a detachable part used to connect the traction rope 310 to the sensing end of the load cell 200. It can be implemented using studs, bolts, screws, or similar structures, and is fixed to the sensing end 210 of the suspended beam by tightening the threads. This allows the traction rope 310 to be detachably connected to the sensing end 210 of the suspended beam via the fixing component 320, facilitating the replacement or maintenance of the traction rope 310. The steering mechanism 430 is positioned near the end of the fixing component 320 to ensure that the connecting section 311 of the traction rope 310 always remains perpendicular to the load cell 200.

[0072] Specifically, after the traction rope 310 is connected to the suspended beam sensing end 210 via the fixing member 320, its extension direction is constrained by the steering mechanism 430. When an external force is applied to the traction rope 310, due to the small distance between the steering mechanism 430 and the fixing member 320, the traction rope 310 cannot produce significant lateral displacement before winding around the steering mechanism 430. Combined with the limiting mechanism 400, this ensures that the force direction of the traction rope 310 is always perpendicular to the suspended beam sensing end 210. The detachable design of the fixing member 320 means that after the traction rope 310 wears out, it is not necessary to replace the entire sensor; maintenance can be completed simply by removing the fixing member 320.

[0073] In one embodiment, the portable electronic scale further includes a display module and / or a wireless ranging module. A control board is provided inside the housing 100. The control board is electrically connected to the weighing sensor 200, the display module, and the wireless ranging module. The housing 100 has a display window corresponding to the display module and a ranging port corresponding to the wireless ranging module.

[0074] The display window refers to a transparent or semi-transparent area on the surface of the housing 100, which can be implemented using a rectangular opening covered by an acrylic sheet. This protects the display module and ensures visibility. The display module is a visual component used to display weighing data in real time. It can be implemented using an LCD or OLED display, and is connected to the control board via electrical signals to convert the weight data collected by the weighing sensor 200 into readable values ​​for easy user observation. Of course, in some embodiments, the portable electronic scale can also output weighing readings through a voice module, mechanical scale, or other means.

[0075] A wireless ranging sensor is a device that measures the distance between an object and a sensor using wireless signals (such as ultrasound, laser, radio waves, etc.). Its core principle is to transmit and receive reflected signals, and calculate the distance by combining parameters such as time difference, signal strength, or phase change. The ranging port refers to the signal transmission channel on the surface of the housing 100. Specifically, it can be implemented using a mesh-like opening or a circular opening encapsulated with a wave-transparent material to reduce wireless signal attenuation. The ranging value can be output through a display module, voice module, etc. By incorporating a wireless ranging module, this portable electronic scale also gains a ranging function, expanding its usability and enhancing its competitiveness.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A portable electronic scale, comprising a housing, a weighing sensor, and a suspension device, wherein the weighing sensor is installed inside the housing, characterized in that, The portable electronic scale also includes a steering mechanism installed inside the housing; The suspension device includes a traction rope, which includes a connecting section and a steering section connected to each other, and the end of the connecting section is fixedly connected to the sensing end of the weighing sensor. The steering mechanism is wound around the connection between the steering section and the connecting section so that the connecting section is perpendicular to the sensing end of the weighing sensor.

2. The portable electronic scale as described in claim 1, characterized in that, The portable electronic scale also includes a limiting mechanism located within the housing. The connecting segment abuts against the steering mechanism in a first direction, and the limiting mechanism limits the connecting segment in a second direction. The first direction, the second direction, and the extension direction of the connecting segment are perpendicular to each other.

3. The portable electronic scale as described in claim 2, characterized in that, The limiting mechanism limits the steering segment in the second direction.

4. The portable electronic scale as described in claim 3, characterized in that, The housing includes a detachable first housing and a second housing; the steering mechanism is installed on the first housing and / or the second housing; the limiting mechanism includes a first limiting part and a second limiting part disposed in the first housing, and a third limiting part and a fourth limiting part disposed in the second housing; after the first housing and the second housing are joined, the first limiting part and the third limiting part clamp the connecting section, and the second limiting part and the fourth limiting part clamp the steering section.

5. The portable electronic scale as described in any one of claims 2 to 4, characterized in that, The traction rope also includes a hook section connected to the end of the steering section away from the connecting section; the portable electronic scale also includes a positioning mechanism installed in the housing, the positioning mechanism being located on the side of the steering mechanism away from the connecting section, and the hook section being wound around the positioning mechanism at the connection point with the steering section.

6. The portable electronic scale as described in claim 5, characterized in that, Both the steering mechanism and the positioning mechanism have an arc surface for the traction rope to be wound around.

7. The portable electronic scale as described in claim 6, characterized in that, The limiting mechanism includes an arc-shaped plate and a clamping plate connected to the inner wall of the housing. The steering mechanism and the positioning mechanism are both cylindrical. The arc-shaped plate is opposite to the clamping plate and the steering mechanism and clamps the connecting section. The arc-shaped plate, the steering mechanism, and the positioning mechanism together clamp the steering section.

8. The portable electronic scale as described in claim 5, characterized in that, The housing has an extension hole, the connecting section and the hanging section are arranged in parallel, and the hanging section extends out of the housing through the extension hole.

9. The portable electronic scale as described in any one of claims 1 to 4, characterized in that, The weighing sensor is a strain gauge sensor, which has a suspended beam sensing end, and the end of the connecting section is fixedly connected to the suspended beam sensing end.

10. The portable electronic scale as described in claim 9, characterized in that, The suspension device also includes a fixing member, one end of the traction rope is fixedly connected to the fixing member, the fixing member is detachably connected to the suspension beam sensing end, and the steering mechanism is disposed near the end of the fixing member.

11. The portable electronic scale as described in any one of claims 1 to 4, characterized in that, The portable electronic scale also includes a display module and / or a wireless ranging module. A control board is provided inside the housing. The control board is electrically connected to the weighing sensor, the display module, and the wireless ranging module. The housing has a display window corresponding to the display module and a ranging port corresponding to the wireless ranging module.

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