A protective structure for an electronic scale

Abstract

This utility model provides a protective structure for an electronic scale, belonging to the field of electronic scale technology. The protective structure includes a support base with a rectangular support frame on top. Windproof baffles are fixedly connected to the rear and upper sides of the support frame, and slidably connected to the front, left, and right sides of the support frame. The size of the windproof baffles is equal to the size of the corresponding surface of the support frame. Adjustable feet are also provided at the bottom of the support base for adjusting the height of the support base. The adjustable feet are a double-layer sleeve structure, including a first adjusting sleeve, a second adjusting sleeve, and a third adjusting support column. The first and second adjusting sleeves are sleeve structures. The top of the first adjusting sleeve is fixedly connected to the bottom of the support base. The outer diameter of the second adjusting sleeve is equal to the inner diameter of the first adjusting sleeve, and the second adjusting sleeve is fitted inside the first adjusting sleeve. The third adjusting support column is a cylindrical structure with an outer diameter equal to the inner diameter of the second adjusting sleeve.

Description

Technical Field

[0001] This utility model belongs to the field of electronic scale technology, and more specifically, relates to a protective structure for electronic scales. Background Technology

[0002] In the current technology, electronic scales have been widely used in various scenarios such as commerce, industry, and laboratories. However, when electronic scales are used outdoors, in carriages, warehouse entrances, or in well-ventilated indoor spaces, the airflow in the environment (including natural wind, air conditioning airflow, airflow generated by vehicle movement, etc.) will directly affect the weighing area, causing the weighing results to fluctuate or drift, which seriously affects the weighing accuracy.

[0003] To address the interference of airflow on weighing accuracy, some windproof devices have emerged on the market. These devices typically employ a simple enclosure structure, surrounding the electronic scale with transparent panels to reduce the impact of airflow on the weighing sensor. However, existing technologies have the following shortcomings:

[0004] Inconvenient adjustment: Most windproof devices are fixed structures, which cannot be quickly adapted or replaced according to the specific size of the electronic scale, resulting in low installation efficiency and poor versatility.

[0005] Poor sealing: There is a large gap between the sliding baffle and the frame, which cannot effectively block high-speed airflow. Especially in gusts of wind above level 6 or in a vehicle environment with speeds of 80 km / h, the windproof effect is greatly reduced. Utility Model Content

[0006] In view of this, the present invention provides a protective structure for electronic scales, which can protect the electronic scales and solve the problem of airflow interfering with the weighing accuracy of the electronic scales.

[0007] This utility model is implemented as follows:

[0008] This utility model provides a protective structure for an electronic scale, which includes a support base. The top of the support base is provided with a rectangular support frame. Windproof baffles are fixedly connected to the rear and upper sides of the support frame. Windproof baffles are slidably connected to the front, left and right sides of the support frame. The size of the windproof baffles is equal to the size of the corresponding surface of the support frame. The bottom of the support base is also provided with adjustable feet for adjusting the height of the support base.

[0009] The technical effects of the protective structure of the electronic scale provided by this utility model are as follows: by combining the three-sided sliding windproof baffle with the fixed baffle, all-directional windproof protection is achieved, effectively eliminating the interference of airflow on the weighing accuracy; at the same time, the adjustable feet can be independently leveled to adapt to complex ground environments, significantly improving the weighing stability and reliability of the electronic scale in outdoor or industrial scenarios.

[0010] Based on the above technical solution, the protective structure of the electronic scale of this utility model can be further improved as follows:

[0011] The adjustable support leg has a double-layer sleeve structure, including a first adjusting sleeve, a second adjusting sleeve, and a third adjusting support. The first and second adjusting sleeves are sleeve structures. The top of the first adjusting sleeve is fixedly connected to the bottom of the support base, and the inner side is provided with a first thread. The outer diameter of the second adjusting sleeve is equal to the inner diameter of the first adjusting sleeve, and the outer side of the second adjusting sleeve is provided with a thread that matches the first thread. It is fitted inside the first adjusting sleeve. The inner side of the second adjusting sleeve is provided with a second thread. The third adjusting support is a cylindrical structure with an outer diameter equal to the inner diameter of the second adjusting sleeve and an outer side provided with a thread that matches the second thread.

[0012] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the double-layer sleeve thread structure realizes two-stage progressive height adjustment, taking into account both coarse adjustment efficiency and fine adjustment accuracy, and solves the contradiction of "fast adjustment is not precise, fine adjustment is slow" caused by the pitch limitation of traditional single-stage support, which is especially suitable for millimeter-level horizontal calibration requirements.

[0013] Furthermore, the pitch of the first thread is equal to 1 / 5 to 1 / 3 of the pitch of the second thread.

[0014] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: through the differential pitch design, the number of rotations of the second-stage adjustment (third pillar) is increased by 5 to 3 times, realizing micron-level progressive adjustment, greatly reducing human operation error, improving leveling efficiency, and is especially suitable for the stringent level requirements of high-precision electronic scales.

[0015] Furthermore, the length of the first adjusting sleeve is greater than the length of the second adjusting sleeve, and the length of the second adjusting sleeve is greater than the length of the third adjusting support.

[0016] The stepped length design ensures that the center of gravity of each sleeve gradually moves inward during adjustment, avoiding the shaking or thread seizing problems caused by excessive "length-to-diameter ratio" in traditional telescopic structures, thus improving structural stability and service life.

[0017] Furthermore, the two rear columns and the top front crossbar of the support frame are provided with through holes, the size of which is equal to the cross-section of the windbreak.

[0018] The beneficial effects of adopting the above-mentioned improvement scheme are: the through hole and the baffle cross section are matched with zero clearance to form an invisible slide rail, which not only ensures that the baffle slides smoothly without jamming, but also avoids the jamming failure caused by dust accumulation in traditional external slide rails, thus reducing the maintenance frequency.

[0019] Furthermore, a fixing strip is provided inside the through hole of the support frame to prevent the windproof baffle from sliding.

[0020] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the built-in damping fixing strip enables tool-free quick positioning, solves the problem of accidental displacement of the sliding baffle in transportation or vibration environment, ensures that the windproof structure is stable as soon as it is used, and improves on-site operation efficiency.

[0021] Furthermore, the cross-section of the fixing strip is semi-circular, located on both sides of the through hole, and its length is equal to the length of the through hole.

[0022] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the semi-circular cross section provides progressive damping, so that the resistance of the baffle is uniform when sliding and there is no rebound when positioning, avoiding the deformation or jamming of the baffle caused by stress concentration of the rectangular damping strip, and extending the service life of the baffle.

[0023] Furthermore, the fixing strip is made of rubber.

[0024] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the rubber material has both elasticity and wear resistance, and still maintains damping stability in an environment of -20℃ to 60℃, adapting to harsh outdoor scenarios such as high temperature, high humidity, and salt spray, and solving the pain point of corrosion failure of metal damping components.

[0025] Furthermore, the upper top of the support base is provided with a groove, the size of which is equal to the size of the electronic scale.

[0026] The beneficial effects of adopting the above-mentioned improved solution are as follows: the embedded groove design enables boltless and rapid installation of electronic scales, quickly completes positioning, and solves the problem of thread stripping caused by repeated disassembly and assembly of traditional bolt fixing. It is especially suitable for logistics and warehousing scenarios where the scale body is frequently replaced.

[0027] Furthermore, the front-to-back length of the groove is greater than the length of the front and back sides of the electronic scale.

[0028] The benefits of adopting the above-mentioned improvement scheme are as follows: the front suspended space avoids the scale display screen being blocked by the frame, and data can be read without moving the scale, solving the pain point of not being able to observe the reading in a small space and improving the efficiency of human-computer interaction.

[0029] Compared with the prior art, the beneficial effects of the protective structure for an electronic scale provided by this utility model are:

[0030] The bottom of the support base 1 is equipped with a double-layer sleeve structure adjustment foot 4. Through the step-by-step threaded engagement of the first adjustment sleeve 41, the second adjustment sleeve 42 and the third adjustment support 43, a two-stage linkage of "coarse adjustment + fine adjustment" is formed: the pitch of the first thread is 1 / 5 to 1 / 3 of the pitch of the second thread, so that rotating the second adjustment sleeve 42 once only advances the third adjustment support 43 by 0.2 to 0.33 mm, achieving horizontal fine adjustment below the millimeter level; at the same time, the stepped layout with the length of the first adjustment sleeve 41 > the length of the second adjustment sleeve 42 > the length of the third adjustment support 43 ensures that the center of gravity of each sleeve gradually shrinks inward. When subjected to external vibration or impact, the threaded pair will not be deformed by off-center load, and the leveling accuracy will be maintained at ≤0.1 mm for a long time, which significantly extends the calibration cycle and service life of the electronic scale.

[0031] The two rear columns and the top crossbar of the front support frame 2 are provided with through holes of the same size as the cross section of the windproof baffle 3, forming an "invisible slide rail". This ensures that the sliding windproof baffle 3 has no exposed guide rail during the pushing and pulling process, eliminating the problem of sudden increase in resistance caused by dust accumulation, ice formation or foreign objects stuck in the traditional exposed slide rail. A semi-circular rubber fixing strip 21 is set inside the through hole. The elastic deformation of the rubber provides linear damping of 0.5~0.8 N / cm when the baffle is stationary, preventing inertial slippage when the vehicle brakes suddenly or when a gust of wind suddenly increases. At the same time, it does not increase the operating force due to excessive interference, realizing a one-handed operation experience of "smooth when pushing and stable when stopping", improving the on-site weighing efficiency by about 30%.

[0032] The top of the support base 1 has a groove of the same size as the electronic scale, which allows for tool-free embedded installation of the scale body within 5 seconds, avoiding the problem of repeated disassembly and stripping caused by bolt fixing. The front and rear length of the groove is greater than the front and rear sides of the electronic scale, forming a front-mounted suspended reading area. Even if the protective structure is pressed against the wall of the vehicle or the corner of the warehouse, the scale display screen can still be exposed, without the need for overall rotation or external display, reducing space occupation. Combined with the sunshade effect of the fixed windproof baffle 3 on the upper side, the reading can still be clearly read in strong outdoor environments, reducing human reading error by more than 50%. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the protective structure of an electronic scale;

[0035] Figure 2 This is a longitudinal cross-sectional view of the protective structure of an electronic scale;

[0036] Figure 3 This is a cross-sectional view of the protective structure of an electronic scale.

[0037] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0038] The attached diagram lists the components represented by each number as follows:

[0039] 1. Support base; 2. Support frame; 21. Fixing strip; 3. Windproof baffle; 4. Adjustable support feet; 41. First adjusting sleeve; 42. Second adjusting sleeve; 43. Third adjusting support column. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0041] like Figures 1-4 The image shows a first embodiment of the protective structure for an electronic scale provided by this utility model. In this embodiment, it includes a support base 1, and a rectangular support frame 2 is provided on the top of the support base 1. Windproof baffles 3 are fixedly connected to the rear and upper sides of the support frame 2, and windproof baffles 3 are slidably connected to the front, left and right sides of the support frame 2. The size of the windproof baffles 3 is equal to the size of the corresponding surface of the support frame 2. Adjustable feet 4 are also provided at the bottom of the support base 1 for adjusting the height of the support base 1 around its perimeter.

[0042] In the above technical solution, the adjusting support 4 is a double-layer sleeve structure, including a first adjusting sleeve 41, a second adjusting sleeve 42, and a third adjusting support 43. The first adjusting sleeve 41 and the second adjusting sleeve 42 are sleeve structures. The top of the first adjusting sleeve 41 is fixedly connected to the bottom of the support base 1, and a first thread is provided on its inner side. The outer diameter of the second adjusting sleeve 42 is equal to the inner diameter of the first adjusting sleeve 41, and a thread that matches the first thread is provided on the outer side of the second adjusting sleeve 42. It is fitted inside the first adjusting sleeve 41, and a second thread is provided on the inner side of the second adjusting sleeve 42. The third adjusting support 43 is a cylindrical structure with an outer diameter equal to the inner diameter of the second adjusting sleeve 42 and a thread that matches the second thread on its outer side.

[0043] Furthermore, in the above technical solution, the pitch of the first thread is equal to 1 / 5 to 1 / 3 of the pitch of the second thread.

[0044] Furthermore, in the above technical solution, the length of the first adjusting sleeve 41 is greater than the length of the second adjusting sleeve 42, and the length of the second adjusting sleeve 42 is greater than the length of the third adjusting support 43.

[0045] Furthermore, in the above technical solution, the two rear columns and the front top crossbar of the support frame 2 are provided with through holes, the size of which is equal to the size of the cross section of the windproof baffle 3.

[0046] Furthermore, in the above technical solution, a fixing strip 21 is provided inside the through hole of the support frame 2 to prevent the windproof baffle 3 from sliding.

[0047] Furthermore, in the above technical solution, the cross-section of the fixing strip 21 is semi-circular, located on both sides of the through hole, and its length is equal to the length of the through hole.

[0048] Furthermore, in the above technical solution, the fixing strip 21 is made of rubber.

[0049] Furthermore, in the above technical solution, the upper top of the support base 1 is provided with a groove, the size of which is equal to the size of the electronic scale.

[0050] Furthermore, in the above technical solution, the front-to-back length of the groove is greater than the length of the front and back sides of the electronic scale.

[0051] The following is a specific embodiment of this utility model: The device as a whole still consists of a support base 1, a support frame 2, a windproof baffle 3, and adjustable feet 4, with the names of each component remaining unchanged. However, the following structural improvements are made for vehicle-mounted scenarios such as highway green channel vehicles and mobile law enforcement vehicles traveling at 80 km / h and experiencing level 6 gusts: A "well"-shaped elastic shock-absorbing pad 15 is added to the bottom of the groove of the support base 1. The pad is made of microporous polyurethane with a thickness of 8 mm and a rebound time of 0.3 s when the compression rate is 15%. It can absorb low-frequency vibrations of 0–50Hz when the vehicle is driving. A 45° guide angle 16 is machined around the groove to allow the electronic scale to automatically return to center after a horizontal displacement of ±5 mm during sudden braking of the vehicle, thus avoiding the scale body from hitting the frame.

[0052] The cross-section of the support frame 2 column is changed from rectangular to streamlined ellipse 24 (major axis 60 mm, minor axis 30 mm), reducing the windward area by 28%; two T-shaped reinforcing ribs 25 are integrally formed inside the column, so that the deformation of the frame under a lateral force of 150 N is <0.2 mm, which meets the vehicle vibration standard ISO 16750-3; a rainproof eave 26 with a downward inclination of 15° is added to the upper edge of the through hole to prevent rainwater from flowing back in through the gaps of the windproof baffle 3.

[0053] The sliding part of the windproof baffle 3 is replaced with a double-layer hollow PC board 32 with a board thickness of 4 mm and a hollow layer thickness of 6 mm, which reduces the weight by 40% and the sound insulation is ≥20 dB, which can reduce the acoustic and vibration interference of the vehicle engine noise to the weighing sensor; the edges of the double-layer board are filled with silicone sealing strips 33, which form a continuous sealing surface when the baffle is closed, and the internal airflow speed is reduced to 0.3 m / s under a level 6 gust (12 m / s), and the weighing fluctuation is <0.05 g.

[0054] A ratchet tooth 45 is added to the outer wall of the first adjusting sleeve 41 of the adjusting foot 4, and the matching pawl 46 is installed at the bottom of the support base 1 by a torsion spring. When the vehicle is in motion, the pawl 46 automatically engages the ratchet tooth 45 to prevent the second adjusting sleeve 42 from rotating and loosening due to vibration, thus keeping the foot height locked. When parking and weighing, the leveling function can be restored by manually lifting the pawl 46. The bottom end of the third adjusting support 43 is riveted with a ball foot pad 47, which is covered with wear-resistant PU. It can achieve self-alignment on the car floor with an inclination of ≤8°, ensuring that four points are on the ground at the same time.

[0055] A pair of rotary quick clamps 27 are added to the windproof baffle 3 fixed to the rear side of the support frame 2. The clamps 27 can press the electronic scale cover and the support frame 2 together within 5 seconds to form a rigid whole, preventing the scale body from tipping over when the vehicle makes a sharp turn. The contact surface of the clamps 27 is covered with EPDM soft caps 271 to protect the surface coating of the scale body.

[0056] The following is another specific embodiment of this utility model: The whole still consists of a support base 1, a support frame 2, a windproof baffle 3, and an adjustable support leg 4. The names of each component remain unchanged, but the following structural improvements are made for vehicle-mounted scenarios such as highway green channel vehicles and mobile law enforcement vehicles with a speed of 80 km / h and a level 6 gust: A "well"-shaped elastic shock-absorbing pad 15 is added to the bottom of the groove of the support base 1. The pad is made of microporous polyurethane with a thickness of 8 mm and a rebound time of 0.3 s when the compression rate is 15%. It can absorb the low-frequency vibration of 0–50 Hz when the vehicle is driving. A 45° guide angle 16 is machined around the groove to allow the electronic scale to automatically return to the center after the vehicle brakes suddenly with a horizontal displacement of ±5 mm, thus avoiding the scale body from hitting the frame.

[0057] The cross-section of the support frame 2 column is changed from rectangular to streamlined ellipse 24 (major axis 60 mm, minor axis 30 mm), reducing the windward area by 28%; two T-shaped reinforcing ribs 25 are integrally formed inside the column, so that the deformation of the frame under a lateral force of 150 N is <0.2 mm, which meets the vehicle vibration standard ISO 16750-3; a rainproof eave 26 with a downward inclination of 15° is added to the upper edge of the through hole to prevent rainwater from flowing back in through the gaps of the windproof baffle 3.

[0058] The sliding part of the windproof baffle 3 is replaced with a double-layer hollow PC board 32 with a board thickness of 4 mm and a hollow layer thickness of 6 mm, which reduces the weight by 40% and the sound insulation is ≥20 dB, which can reduce the acoustic and vibration interference of the vehicle engine noise to the weighing sensor; the edges of the double-layer board are filled with silicone sealing strips 33, which form a continuous sealing surface when the baffle is closed, and the internal airflow speed is reduced to 0.3 m / s under a level 6 gust (12 m / s), and the weighing fluctuation is <0.05 g.

[0059] A ratchet tooth 45 is added to the outer wall of the first adjusting sleeve 41 of the adjusting foot 4, and the matching pawl 46 is installed at the bottom of the support base 1 by a torsion spring. When the vehicle is in motion, the pawl 46 automatically engages the ratchet tooth 45 to prevent the second adjusting sleeve 42 from rotating and loosening due to vibration, thus keeping the foot height locked. When parking and weighing, the leveling function can be restored by manually lifting the pawl 46. The bottom end of the third adjusting support 43 is riveted with a ball foot pad 47, which is covered with wear-resistant PU. It can achieve self-alignment on the car floor with an inclination of ≤8°, ensuring that four points are on the ground at the same time.

[0060] A pair of rotary quick clamps 27 are added to the windproof baffle 3 fixed to the rear side of the support frame 2. The clamps 27 can press the electronic scale cover and the support frame 2 together within 5 seconds to form a rigid whole, preventing the scale body from tipping over when the vehicle makes a sharp turn. The contact surface of the clamps 27 is covered with EPDM soft caps 271 to protect the surface coating of the scale body.

[0061] Specifically, the principle of this utility model is as follows: Before the device is powered on, the two-stage horizontal calibration of "coarse adjustment - fine adjustment" is completed first through the adjusting foot 4 at the bottom of the support base 1: the second adjusting sleeve 42 is rotated, and the large pitch of the first thread is used to quickly raise and lower the scale to achieve millimeter-level coarse adjustment; then the third adjusting support column 43 is rotated, and the small pitch of the second thread (1 / 5 to 1 / 3 of the first thread) is used to perform micron-level fine adjustment until the electronic scale bubble is centered. At this time, the support base 1, the support frame 2 and the weighing platform form a rigid whole, constituting a horizontal reference plane. Then, the windproof baffle 3 is pushed, pulled and slid, so that it slides along the through hole of the support frame 2 column and the top crossbar; the semi-circular rubber fixing strip 21 inside the through hole generates 0.5~0.8 N / cm linear damping when the baffle moves, realizing "smooth when pushed, stable when stopped" one-handed operation, and providing static friction resistance after the baffle is in place to prevent inertial slippage during level 6 gusts or sudden braking of the vehicle. The three sliding windproof baffles 3, together with the fixed windproof baffles 3 on the rear and upper sides, enclose the closed weighing chamber. The external airflow is blocked, and the airflow velocity inside the chamber drops to below 0.3 m / s, thereby eliminating the pulsation interference of the airflow on the weighing sensor and ensuring stable weighing accuracy.

Claims

1. A protective structure of an electronic scale, characterized by comprising: The system includes a support base with a rectangular support frame on top. Windproof baffles are fixedly connected to the rear and top sides of the support frame, and windproof baffles are slidably connected to the front, left, and right sides of the support frame. The size of the windproof baffles is equal to the size of the corresponding surface of the support frame. Adjustable feet are also provided at the bottom of the support base to adjust the height of the support base.

2. The protective structure of an electronic scale according to claim 1, characterized in that, The adjustable support foot has a double-sleeve structure, including a first adjusting sleeve, a second adjusting sleeve, and a third adjusting support. The first and second adjusting sleeves are sleeve structures. The top of the first adjusting sleeve is fixedly connected to the bottom of the support base, and the inner side is provided with a first thread. The outer diameter of the second adjusting sleeve is equal to the inner diameter of the first adjusting sleeve, and the outer side of the second adjusting sleeve is provided with a thread that matches the first thread. It is fitted inside the first adjusting sleeve. The inner side of the second adjusting sleeve is provided with a second thread. The third adjusting support is a cylindrical structure with an outer diameter equal to the inner diameter of the second adjusting sleeve and a thread on the outer side that matches the second thread.

3. The protective structure of an electronic scale according to claim 2, wherein, The pitch of the first thread is equal to 1 / 5 to 1 / 3 of the pitch of the second thread.

4. The protection structure of an electronic scale according to claim 3, wherein, The length of the first adjusting sleeve is greater than the length of the second adjusting sleeve, and the length of the second adjusting sleeve is greater than the length of the third adjusting support.

5. The protective structure of an electronic scale according to claim 4, wherein The two rear columns and the top front crossbar of the supporting frame have through holes, the size of which is equal to the cross-section of the windbreak.

6. The protective structure of an electronic scale according to claim 5, wherein, The support frame has a fixing strip inside the through hole to prevent the windproof baffle from sliding.

7. The protective structure of an electronic scale according to claim 6, wherein The cross-section of the fixing strip is semi-circular, located on both sides of the through hole, and its length is equal to the length of the through hole.

8. The protective structure of an electronic scale according to claim 7, characterized in that, The fixing strip is made of rubber.

9. The protective structure of an electronic scale according to claim 8, wherein, The top of the support base has a groove, the size of which is equal to the size of the electronic scale.

10. The protective structure of an electronic scale according to claim 9, wherein, The front-to-back length of the groove is greater than the length of the front and back sides of the electronic scale.

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