Electronic kitchen scale with adjustable display module

Abstract

The utility model relates to the technical field of weighing equipment, and discloses an electronic kitchen scale with an adjustable display mode, which comprises a weighing module, a display module and a flexible hose for connecting the weighing module and the display module. The weighing module comprises a bearing panel, a weighing sensor and a sensor connecting piece; the display module is integrated with a circuit board, a lithium battery and a display panel; the supporting framework is embedded in the flexible hose, a wire is arranged in the flexible hose, and the two ends of the flexible hose are detachably connected with the display module and the weighing module through connectors respectively. The flexible hose is plastically bent and kept shaped, so that the display module can be adjusted at any angle and position in a three-dimensional space. The maintenance cost is reduced through modular separation design, the adjustment freedom degree of the display module is improved through flexible hose connection, the problem of view angle shielding is effectively solved, the flexible hose structure embedded with the supporting framework provides high structural stability, and the display module is suitable for the complex kitchen environment.

Description

Technical Field

[0001] This invention relates to the field of weighing equipment technology, specifically to an electronic kitchen scale that achieves multi-dimensional adjustment of the display module through a flexible connection structure. Background Technology

[0002] Electronic scales convert the weight of an object into an electrical signal using a load cell, which is then converted from analog to digital and processed to display the value. Electronic kitchen scales need to meet requirements such as high accuracy (below ±1g), unit switching (grams / ounces / milliliters), and resistance to stains and water. Traditional structures often use an integrated design with the display module fixed to the side of the weighing area, leading to viewing obstruction issues for users in different operating postures.

[0003] To address the above issues, existing improvement solutions include:

[0004] 1. Detachable display screen (e.g., CN201920123456.7): The display screen is separated from the host through magnetic attraction or sliding rail, but it has problems such as poor connection stability and easy loss.

[0005] 2. Folding structure (e.g., JP2020105678A): The display screen is folded using a hinge, but it only supports single-plane angle adjustment and cannot meet the needs of complex scenarios.

[0006] 3. Projection display (e.g., US2021123456A1): Projects weight data onto the tabletop, but ambient light interference results in low readability.

[0007] The aforementioned prior art has the following drawbacks:

[0008] 1. Rigid human-computer interaction: The display module is in a fixed position, and the user's view is easily blocked by their hand when operating it;

[0009] 2. Short mechanical structure lifespan: Hinges / slide rails are prone to wear and loosening after frequent adjustments;

[0010] 3. Poor environmental adaptability: Liquid splashes can easily seep into the gaps between moving parts, causing short circuits. Summary of the Invention

[0011] In view of this, the technical problem to be solved by the present invention is to overcome the above-mentioned defects of existing electronic kitchen scales and to provide an electronic kitchen scale with an adjustable display module, which solves the space layout problem through modular separation and solves the human-computer interaction problem through a flexible adjustment mechanism.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] An electronic kitchen scale with an adjustable display module includes: a weighing module, a display module, and a flexible hose; wherein, the weighing module consists of a main support, a load-bearing panel, and a sensor assembly, the interior of the main support forms a first accommodating space to house the sensor assembly, and the sensor assembly is rigidly connected to the load-bearing panel; the display module consists of an instrument box, a circuit board, a lithium battery, and a display panel, the interior of the instrument box forms a second accommodating space to house the circuit board and the lithium battery, and the display panel is disposed on the surface of the instrument box; the two ends of the flexible hose are respectively connected to the weighing module and the display module, the hose wall has an embedded support frame, and the built-in wires realize the transmission of electrical signals between the weighing module and the display module; the flexible hose is plastically bendable and maintains its shape.

[0014] Furthermore, the flexible hose includes: a hose body, a spiral metal support frame, and a connecting structure; the hose body has an outer diameter of 8-15mm and a wall thickness of 1-2mm, and is made of food-grade silicone material; the spiral metal support frame is embedded inside the hose body wall, has a wire diameter of 0.5-1.5mm, a pitch of 2-6mm, and is made of 304 stainless steel or titanium alloy; the connecting structure is located at both ends of the hose body and is detachably connected to the interface of the weighing module / display module.

[0015] Furthermore, the torsional stiffness coefficient of the supporting frame is 5-15 N•mm / rad, and the bending fatigue life is greater than 100,000 cycles.

[0016] Furthermore, the sensor connector is a disc-shaped rigid component, with its upper surface in surface contact with the load-bearing panel and a sensor mounting slot provided on its lower side.

[0017] Furthermore, the display panel is a capacitive touchscreen with an oleophobic and hydrophobic nano-coating on its surface and an automatic brightness adjustment threshold of 50-1000 lux.

[0018] Furthermore, the bottom of the main support is provided with adjustable feet, including: a threaded adjustment rod, 20-30mm in length, made of nylon 66; a rubber suction cup, 15-20mm in diameter, with a Shore hardness of 50-60A; and anti-slip texture, set on the ground of the rubber suction cup, with a texture depth of 0.3-0.5mm.

[0019] Furthermore, the circuit board integrates the following modules: a Bluetooth 5.0 communication module for synchronizing recipe data with a smart terminal; a temperature compensation circuit for real-time correction of the weighing signal based on the DS18B20 sensor; and a low-power mode controller for turning off the backlight of the display panel after 5 minutes of inactivity.

[0020] Furthermore, the instrument box has the following features on its side: a charging port for charging the lithium battery; and a waterproof sealing ring made of fluororubber with a compression rate of 20%-30%.

[0021] Furthermore, the load-bearing panel is made of tempered glass.

[0022] Furthermore, the connection structure is a self-locking rotary joint.

[0023] The beneficial effects of this invention are as follows:

[0024] 1. Human-computer interaction optimization: The display module can be freely adjusted to the optimal viewing position via a flexible tube, avoiding obstruction of the view by hands or containers, and increasing the viewing angle adjustment range by 400%;

[0025] 2. Improved structural reliability: The support skeleton inside the flexible hose provides a torsional stiffness of 5-15 N•mm / rad and a bending fatigue life of >10 cycles, which is more than 8 times longer than that of a hinge structure.

[0026] 3. Enhanced environmental adaptability: The modular, separate design physically isolates circuit components from the weighing area, reducing the risk of liquid penetration;

[0027] 4. Reduced production and maintenance costs. Attached Figure Description

[0028] Figure 1 This is a perspective view of the overall structure of an electronic kitchen scale with an adjustable display module according to an embodiment of the present invention (showing the spatial relationship between the weighing module, flexible hose, and display module).

[0029] Figure 2 This is an exploded view of an electronic kitchen scale with an adjustable display module according to an embodiment of the present invention (deconstructing the connection structure of each component).

[0030] Figure 3 This is a bottom view of the electronic kitchen scale with an adjustable display module according to an embodiment of the present invention;

[0031] Figures 4-6 Schematic diagrams of other structural forms of the display module are shown;

[0032] Figures 7-10 This diagram illustrates how the adjustable display module of an electronic kitchen scale according to an embodiment of the present invention can be adjusted to different positions and angles. Detailed Implementation

[0033] The technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the scope of protection of the present invention.

[0034] It should be noted that in the description of this application, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0035] The terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly indicating the importance of the technical features shown.

[0036] Furthermore, it should be noted that, in the description of this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] This invention provides an electronic kitchen scale with an adjustable display module, the core technical solution of which includes:

[0038] 1. Modular Separation Structure: The weighing module and the display module are physically separated and electrically connected through a flexible hose; the flexible hose has a malleable support capability, and a support skeleton is embedded in its wall to ensure bending and shaping stability, while also enabling signal transmission through built-in wires.

[0039] 2. Multi-degree-of-freedom adjustment mechanism: The flexible tube can be bent in any direction and maintain its shape, enabling the display module to achieve three-dimensional spatial position adjustment to meet the needs of multi-angle observation.

[0040] 3. Enhanced environmental adaptability design: The instrument box of the display module adopts an IP67 waterproof structure and is equipped with fluororubber sealing rings to achieve waterproof sealing of electronic components.

[0041] The structure of each module in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0042] Please see Figures 1-3 The diagram below shows the structure of an electronic kitchen scale with an adjustable display module according to an embodiment of the present invention. The electronic scale specifically includes the following components:

[0043] Weighing module 100: includes main support 110, load-bearing panel 120, and sensor assembly 130.

[0044] The main support 110 is injection molded from ABS+PC composite material and consists of an upper part 111 and a lower part 112, which are detachably connected. A first receiving space is formed between the upper part 111 and the lower part 112, and a sensor mounting slot is provided in the first receiving space. The sensor mounting slot is fixed to the sensor assembly 130 by a snap-fit ​​structure. Anti-slip pads 115 are provided at the bottom of the lower part 112 for positioning and anti-slip. In some embodiments, threaded holes can be reserved at the four corners of the bottom of the lower part 112 for installing adjustable feet (not shown in the figure). The main support 110 provides structural support and protects the internal sensor assembly 130. The adjustable feet at the bottom can be used for horizontal calibration. A circular through hole is provided in the central area of ​​the upper part 112 for arranging the sensor assembly 130, so that it forms a rigid contact with the load-bearing panel 120. The upper part 111 and the lower part 112 of the main support can be detachably connected by multiple cylindrical buckles 114.

[0045] The load-bearing panel 120 is made of 6mm thick tempered glass (surface Mohs hardness ≥7), with CNC chamfered and polished edges, and an impact resistance of ≥10J. The load-bearing panel 120 is in direct contact with the upper surface of the sensor assembly 130.

[0046] The sensor assembly 130 includes a load cell 131, a load-bearing connector 132, and a fixing connector 133. The load cell 131 can be an S-shaped cantilever beam sensor with a measuring range of 0-10 kg, an overall accuracy of ±0.3 g, an output sensitivity of 2.0 mV / V, and an operating temperature of -20℃ to 70℃. The load cell 131 is locked and fixed to the load-bearing connector 132 via the fixing connector 133, and silicone shock-absorbing pads can be used at the four corners to buffer impact forces.

[0047] The load-bearing connector 132 is made of disc-shaped 45# steel, with dimensions matching the circular through-hole size of the upper part 111 of the main support. Its upper surface is ground (Ra0.8) to form full contact with the load-bearing panel 120; the lower side is machined with a snap-fit ​​to match the mounting slot of the load cell 131. The load-bearing connector 132 is used to evenly distribute the load-bearing pressure, avoiding measurement errors caused by localized stress concentration. The fixing connector 133 is made of rigid casting and is used for the fixed connection between the load cell 131 and the load-bearing panel 120 and the main support 110.

[0048] Display module 200 includes instrument box 210, circuit board 220, lithium battery 230 and display panel 240.

[0049] The instrument box 210 includes an upper housing 211 and a lower housing 212, which are sealed by ultrasonic welding or by a sealing ring. A charging interface slot 260 is provided on the side. The interior of the instrument box 210 forms a second accommodating space to accommodate the circuit board 220 and the lithium battery 230.

[0050] Circuit board 220 is the core control component of the electronic scale, including the main control chip, analog-to-digital converter, Bluetooth module, display module, and temperature compensation module. Display panel 240 corresponds to the display module on circuit board 220, employing a 2.8-inch TFT capacitive touchscreen (320×240 resolution, 300cd / m² brightness). The surface is coated with a silica-based nano-coating, with a contact angle ≥115°, reducing oil adhesion by 80%. Display panel 240 allows users to switch units (grams / ounces / milliliters) by sliding, double-tap to wake the backlight, and long-press for 3 seconds to enter calibration mode. Display panel 240 is located on the surface of the upper housing 211, facilitating user reading of weighing data and operation.

[0051] The lithium battery 230 uses a 3.7V / 2000mAh lithium polymer battery with a cycle life of ≥800 cycles and supports QC3.0 fast charging (0-80% charging time ≤1 hour). The lithium battery 230 is fixed in the lower housing 212 by the mounting clip 250.

[0052] Please see Figures 4-6 The diagram shows other structural forms of the display module 200. Of course, without affecting the function, the display module 200 can also be any other structural form, such as circular, square, rhomboid, irregular shape, etc.

[0053] Flexible hose 300: includes hose body 310, support frame (not shown in the figure) and connection structure 320.

[0054] The hose body 310 is made of food-grade liquid silicone (Shore hardness 55A, tensile strength ≥8MPa), with an outer diameter of 12mm, a wall thickness of 1.5mm, and a temperature resistance range of -40℃ to 220℃. The hose body 310 can be formed in one piece by an extrusion molding machine. It has 4 core 28AWG silver-plated wires embedded inside for data transmission, and is covered with a polyester fiber braided layer to enhance tensile strength.

[0055] The support frame can be made of 1.2mm diameter 304 stainless steel wire spirally wound with a 4mm pitch, at a winding density of 25 turns / 10cm. The ends are welded with fixing rings and riveted to the connecting structure at 320°. The bending fatigue life test (ASTM D671) shows 120,000 cycles without fracture, and the torsional stiffness coefficient is 10 N·mm / rad.

[0056] The connecting structures 320 are arranged at both ends of the flexible hose 300, including a first connecting structure 321 for detachable connection to the weighing module 100 and a second connecting structure 322 for connection to the display module 200. The first connecting structure 321 matches the third connecting structure 113 on the weighing module 100, and the second connecting structure 322 matches the fourth connecting structure 215 on the display module 200. The first connecting structure 321 / third connecting structure 113 and the second connecting structure 322 / fourth connecting structure 215 can be designed as a circular snap-fit ​​connection structure for easy and quick connection and disassembly, and can achieve 360° rotation adjustment. In an alternative embodiment, the connecting structure 320 can also be replaced by a magnetic interface (neodymium iron boron magnet + Hall sensor) to achieve quick assembly and disassembly. In some embodiments, the matching structure between the second connecting structure 322 and the fourth connecting structure 215 can be a rotatable connector structure, thereby enabling the display module 200 to achieve 360° rotation adjustment.

[0057] Please see Figures 7-10 The diagram shows the adjustment of the display module 200 at different positions and angles through the plastic bending of the flexible hose 300.

[0058] The working principle of the electronic kitchen scale with adjustable display module according to an embodiment of the present invention is as follows:

[0059] 1. Weighing signal transmission: The object is placed on the load-bearing panel 120 → the pressure is transmitted to the weighing sensor 131 through the load-bearing connector 132 → the strain gauge generates a differential voltage signal → the HX711 chip amplifies and converts the signal to an AD converter → the STM32 main controller performs digital filtering (moving average algorithm) → the processed weight data is transmitted to the display module 200 through the wires in the flexible hose 300.

[0060] 2. Display adjustment mechanism: The user manually bends the flexible hose 300 to the target angle → the support frame provides resistance to plastic deformation to maintain the shape → the connecting structure 320 allows the display module 200 to rotate horizontally to adapt to different viewing directions.

[0061] 3. Environmental adaptability: The waterproof sealing structure of the instrument box 210 and the separate design between the display module 200 and the weighing module 100 together prevent pollutants from entering.

[0062] Application scenarios of this invention include:

[0063] 1. Baking operation: When weighing flour, the display module 200 will be bent to the outside of the operation area to avoid splashing and contaminating the screen.

[0064] 2. Embedded installation: The weighing module 100 is embedded in the opening of the countertop, the flexible hose 300 extends to the edge of the countertop, and the display module 200 is exposed for easy reading.

[0065] 3. Multi-user adaptation: Left-handed users can rotate the display module 200° 180° and fix it to achieve reverse operation interface.

[0066] In the description of this specification, references to terms such as "some embodiments," "some examples," "exemplarily," "example," "preferred," or "further" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. 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.

[0067] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An electronic kitchen scale with an adjustable display module, characterized in that, include: The weighing module (100) consists of a main support (110), a load-bearing panel (120) and a sensor assembly (130). The main support (110) forms a first accommodating space to accommodate the sensor assembly (130), and the sensor assembly (130) is rigidly connected to the load-bearing panel (120). The display module (200) is composed of an instrument box (210), a circuit board (220), a lithium battery (230) and a display panel (240). The interior of the instrument box (210) forms a second accommodating space to accommodate the circuit board (220) and the lithium battery (230). The display panel (240) is arranged on the surface of the instrument box (210). The flexible hose (300) is connected at both ends to the weighing module (100) and the display module (200) respectively. Its tube wall is embedded with a support frame, and the built-in wire realizes the transmission of electrical signals between the weighing module (100) and the display module (200). The flexible hose (300) can be plastically bent and maintain its shape.

2. The electronic kitchen scale according to claim 1, characterized in that, The flexible hose (300) includes: The hose body (310) has an outer diameter of 8-15mm and a wall thickness of 1-2mm, and is made of food-grade silicone material. A spiral metal support skeleton is embedded inside the tube wall of the hose body (310), with a wire diameter of 0.5-1.5mm, a pitch of 2-6mm, and the material is 304 stainless steel or titanium alloy. The connecting structure (320) is disposed at both ends of the hose body (310) and is detachably connected to the interface of the weighing module (100) / display module (200).

3. The electronic kitchen scale according to claim 2, characterized in that, The torsional stiffness coefficient of the supporting frame is 5-15 N•mm / rad, and the bending fatigue life is greater than 100,000 cycles.

4. The electronic kitchen scale according to claim 1, characterized in that, The sensor connector (140) is a disc-shaped rigid component, with its upper surface in surface contact with the load-bearing panel (120) and a sensor mounting slot provided on its lower side.

5. The electronic kitchen scale according to claim 1, characterized in that, The display panel (240) is a capacitive touch screen with an oleophobic and hydrophobic nano-coating on its surface and an automatic brightness adjustment threshold of 50-1000 lux.

6. The electronic kitchen scale according to claim 1, characterized in that, The main support (110) is provided with adjustable feet at the bottom, including: Threaded adjusting rod, 20-30mm in length, made of Nylon 66; Rubber suction cup, diameter 15-20mm, Shore hardness 50-60A; Anti-slip texture is provided on the ground of the rubber suction cup, with a texture depth of 0.3-0.5mm.

7. The electronic kitchen scale according to claim 1, characterized in that, The circuit board (220) integrates the following modules: Bluetooth 5.0 communication module, used to synchronize recipe data with smart terminals; Temperature compensation circuit, based on DS18B20 sensor, corrects the weighing signal in real time; The low-power mode controller turns off the backlight of the display panel (240) after 5 minutes of inactivity.

8. The electronic kitchen scale according to claim 1, characterized in that, The instrument box (210) has the following features on its side: A charging port (260) is provided for charging the lithium battery (230); The waterproof sealing ring is made of fluororubber with a compression rate of 20%-30%.

9. The electronic kitchen scale according to claim 1, characterized in that, The load-bearing panel (120) is made of tempered glass.

10. The electronic kitchen scale according to claim 2, characterized in that, The connection structure (320) is a self-locking rotary joint.

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