Anti-scald faucet

Abstract

An anti-scald faucet comprises a shell and a valve element embedded in the top of the shell, a control handle is installed on an adjusting rod of the valve element, and a rotating groove is formed between the valve element and the shell in a hollowed-out mode. A rotation limiting device is arranged in the rotating groove and comprises a limiting seat fixedly arranged in the rotating groove and a limiter rotationally arranged in the rotating groove and linked with the valve element. The limiter is in linkage with the valve element, the limiter is driven to rotate when the valve element rotates, the limiter rotates till the end faces of the two sides of the limiter make contact with the end faces of the two sides of the limiting base, and therefore the rotating stroke of the valve element is limited. The anti-scald valve has the advantages that the rotation limiting device limits the rotation stroke of the valve element, rotation of the valve element is effectively prevented, water using safety is improved, and the anti-scald protection function is provided.

Description

Technical Field

[0001] This utility model relates to the field of faucet technology, specifically an anti-scalding faucet. Background Technology

[0002] A faucet is a common term for a water valve, used to control the flow of water. Its design has evolved from old-fashioned cast iron faucets to electroplated knobs, then to stainless steel single-temperature single-control faucets, and finally to dual-temperature dual-control faucets. Existing mixer faucets, especially traditional mechanical or valve-driven ones, generally have a significant safety hazard: if a user unintentionally or improperly rotates the control handle excessively to the maximum hot water position, undiluted hot water may flow out directly. This is particularly dangerous for the elderly, children, and others who have difficulty sensing or reacting to water temperature, easily causing scalding accidents, inconvenience, and safety risks. Furthermore, existing mixer faucets often lack effective physical limits or warning mechanisms for water temperature adjustment. Users typically rely on feeling or experience to judge the water temperature, which not only increases the risk of misoperation but also makes precise temperature control difficult. In certain special applications, such as hospitals, kindergartens, or nursing homes where water safety requirements are higher, the shortcomings of existing mixer faucets are particularly pronounced, failing to provide sufficient active safety protection. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of existing technologies and provide a scalding faucet with a simple structure, low manufacturing cost, compact structure, reliable linkage between valve core and limiter, active anti-scalding protection, controllable hot water flow, high safety, and enhanced user experience.

[0004] The purpose of this utility model is achieved by the following method: an anti-scalding faucet, comprising a housing and a valve core embedded in its top, a control handle mounted on the adjusting rod of the valve core, and a rotating groove hollowed out between the valve core and the housing; a rotation limiting device is provided in the rotating groove, the rotating limiting device comprising a limiting seat fixedly disposed in the rotating groove, and a limiter rotatably disposed in the rotating groove and linked with the valve core; the limiter is linked with the valve core, and when the valve core rotates, it drives the limiter to rotate, and the limiter rotates until its two end faces contact the two end faces of the limiting seat, thereby limiting the rotation stroke of the valve core.

[0005] The outer surface of the valve core is recessed with several adjusting teeth, and the inner wall of the limiter is protruded with connecting teeth. The connecting teeth mesh with the adjusting teeth to realize the linkage between the limiter and the valve core.

[0006] The limiter has a U-shaped cross-section, with a mounting platform extending outward from its top, which is positioned above the rotating groove.

[0007] The mounting platform extends downward to provide an insert plate, which is installed and connected in the rotating groove. The connecting teeth are arranged across the inner wall of the extended mounting platform and the insert plate.

[0008] The top surface of the limiter is marked with a hot / cold rotation symbol.

[0009] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0010] 2. The rotation limiting device restricts the rotation stroke of the valve core, effectively preventing the valve core from rotating, improving water safety, and providing anti-scalding protection.

[0011] 3. By adjusting the installation position of the limiter, the maximum rotation angle of the valve core can be precisely controlled, effectively controlling the flow rate of hot water, preventing scalding of users, ensuring high safety, and adapting to different usage scenarios and safety requirements.

[0012] 4. The meshing of the valve core's adjusting teeth and the limiter's connecting teeth not only achieves reliable linkage of the valve core, but also results in a compact, stable, and efficient structure, making it easy for users to maintain and replace. Attached Figure Description

[0013] Figure 1 This is a rendering of the final assembly of this utility model.

[0014] Figure 2 This is a schematic diagram showing the installation state of the control handle and the adjusting rod in this utility model.

[0015] Figure 3 This is a schematic diagram of the water-stopped state of the rotation limiting device in this utility model.

[0016] Figure 4 This is an exploded view of the structure of the limiter and the limiting seat in this utility model.

[0017] Figure 5 This is a schematic diagram showing the position of the limiter in the cold water state of this utility model.

[0018] Figure 6 This is a schematic diagram showing the position of the limiter in the hot water state in this utility model. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings. A scalding-proof faucet includes a housing 1 and a valve core 2 embedded in its top. A control handle 3 is mounted on an adjusting rod 21 of the valve core 2. A rotating groove 4 is hollowed out between the valve core 2 and the housing 1. A rotation limiting device 5 is provided in the rotating groove 4. The rotation limiting device 5 includes a limiting seat 51 fixedly disposed in the rotating groove 4 and a limiter 52 rotatably disposed in the rotating groove 4 and linked with the valve core 2. The limiter 52 is linked with the valve core 2. When the valve core 2 rotates, it drives the limiter 52 to rotate. The limiter 52 rotates until its two end faces contact the two end faces of the limiting seat 51, thereby limiting the rotation stroke of the valve core 2.

[0020] like Figure 1-3 As shown: The valve core, as the determining component for controlling the flow of hot and cold water, has a pre-drilled groove between it and the housing for rotation, within which a rotation limiting device is installed. It should be noted that the rotation limiting device includes a fixed component limit seat, which does not rotate with the valve core; and a movable component limiter, designed to be linked with the valve core. When the user rotates the valve core using the control handle to adjust the water temperature, the limiter rotates along with the valve core. When the user rotates the valve core to its maximum angle towards hot or cold water, the limiter rotates synchronously until its two end faces contact the outer end faces of the limit seat, mechanically limiting the valve core and preventing further rotation, thus restricting the valve core's rotation stroke within a safe range. This mechanical limitation prevents the valve core from rotating excessively to a high-temperature area that could cause scalding, even if the user is careless or a child operates it, significantly improving water safety. This active limiting function allows users to use the faucet safely, especially for the elderly and children, greatly reducing the risk of accidental scalding.

[0021] The outer surface of the valve core 2 is recessed with a plurality of adjusting teeth 22, and the inner wall of the limiter 52 is protruded with connecting teeth. The connecting teeth mesh with the adjusting teeth 22 to realize the linkage between the limiter 52 and the valve core 2.

[0022] like Figure 3-4As shown: To link the valve core and the limiter, adjusting teeth are recessed on the outer surface of the valve core, and correspondingly, connecting teeth are protruding on the inner wall of the limiter. When the valve core and the limiter are engaged, the connecting teeth of the limiter precisely insert and mesh with the adjusting teeth of the valve core. This "tooth-to-tooth" meshing connection ensures that the valve core can directly drive the limiter to rotate synchronously at any rotation angle. This gear-type meshing linkage is not only simple and compact in structure, but also provides a strong connection and reliable transmission, ensuring that the rotational motion of the valve core is stably transmitted to the limiter, enabling it to accurately perform its limiting function. Compared to friction linkage or other complex structures, this meshing method offers higher precision and a longer service life, effectively avoiding the risk of anti-scalding function failure due to unstable linkage.

[0023] Furthermore, the connecting teeth can rotate to engage with the appropriate adjustment groove, adjusting the installation device of the limiter, thereby flexibly adjusting the maximum rotation angle of the valve core, providing flexible adjustment to meet the diverse needs of modern applications.

[0024] The limiter 52 has a 7-shaped cross section, and a mounting platform 521 extends outward from its top. The mounting platform 521 is located above the rotating groove 4.

[0025] like Figure 4 As shown, the limiter has a 7-shaped cross-section with a mounting platform extending outwards from its top. This platform connects to the top of the rotating slot, allowing part of the limiter to extend into the slot. This ensures a more stable installation of the limiter within the rotating slot, aiding in its positioning and preventing it from deviating from its predetermined track during rotation. The mounting platform, located above the rotating slot, does not directly participate in the rotational limiting function but is an integral part of the overall limiter structure, providing convenient installation and improving stability and ease of installation within the rotating slot. The limiter's shape design not only ensures reliability when performing its rotational limiting function but also facilitates subsequent marking or connection, optimizing the overall product structure and assembly efficiency.

[0026] The mounting platform 521 extends downward to provide an insert plate 522, which is installed and connected in the rotating groove 4. The connecting teeth are arranged across the inner wall of the extended mounting platform 521 and the insert plate 522.

[0027] like Figure 4As shown: The mounting platform extends downwards and is equipped with an insert plate, which is then inserted into the rotating groove. Simultaneously, the aforementioned connecting teeth span the inner walls of the extended mounting platform and the insert plate. The insert plate, mounting platform, and connecting teeth are designed as a single unit, resulting in a more compact and stable installation. This not only simplifies the manufacturing and assembly process of the limiter but also makes the positioning of the connecting teeth more precise and reliable, further enhancing the stability of the linkage between the limiter and the valve core, ensuring the effective execution of the faucet's anti-scalding function.

[0028] The top end face of the limiter 52 is marked with a hot and cold rotation mark 6.

[0029] like Figure 3-6 As shown: The top face of the limiter is marked with an indicator to show the direction of hot and cold water rotation. When the user rotates the valve core using the control handle, the limiter rotates accordingly due to the linkage between the limiter and the valve core. The hot and cold water rotation indicator on its top clearly displays the current water temperature adjustment direction to the user, greatly enhancing the faucet's user-friendliness and providing clear visual guidance. This allows users to quickly and accurately determine the current water temperature adjustment direction and position. The hot and cold water rotation indicator not only reduces guesswork and misoperation during adjustment, improving ease of use, but also, combined with its physical anti-scalding function, further strengthens the faucet's overall safety and user experience. This is especially beneficial for those unfamiliar with faucet operation, such as children or the elderly.

[0030] In summary: A rotating groove is cut out between the valve core and the housing, and a rotation limiting device is installed in the rotating groove to control the rotation stroke of the valve core, thereby achieving the purpose of preventing scalding.

[0031] When the user operates the control handle to adjust the water temperature, the valve core rotates accordingly. Because the limiter and valve core are reliably linked through the meshing of connecting teeth and adjusting teeth, the limiter also rotates synchronously. When the valve core rotates to the preset maximum safe angle, the limiter makes physical contact with the limit seat fixed in the rotating groove, forming a mechanical block and thus limiting the valve core's further rotation. This mechanical limitation fundamentally prevents the user from excessively turning the faucet to a high-temperature area that could cause scalding, effectively protecting against accidental operation.

[0032] Furthermore, by adjusting the installation position of the limiter, the maximum rotation angle of the valve core can be flexibly set, thereby controlling the maximum flow rate at the hot water end or ensuring that the mixing ratio of hot and cold water is always within a safe range, effectively preventing scalding accidents. Meanwhile, the hot and cold rotation indicator on the top face of the limiter provides users with intuitive operating instructions, further enhancing product safety and user experience.

[0033] The entire rotation limiting device has a compact structure, reliable linkage, and clear functions. It effectively solves the safety hazards of existing mixing faucets and provides a practical and effective solution for water safety in homes and public places. Therefore, it can be widely promoted.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A scalding-proof faucet, comprising a housing (1) and a valve core (2) embedded in its top, wherein a control handle (3) is mounted on an adjusting rod (21) of the valve core (2), characterized in that: A rotating groove (4) is provided between the valve core (2) and the housing (1); a rotation limiting device (5) is provided in the rotating groove (4), the rotating limiting device (5) includes a limiting seat (51) fixedly provided in the rotating groove (4), and a limiter (52) rotatably provided in the rotating groove (4) and linked with the valve core (2); the limiter (52) is linked with the valve core (2), and when the valve core (2) rotates, it drives the limiter (52) to rotate, and the limiter (52) rotates until its two end faces contact the two end faces of the limiting seat (51), thereby limiting the rotation stroke of the valve core (2).

2. The anti-scalding faucet according to claim 1, characterized in that: The outer surface of the valve core (2) is recessed with a number of adjusting teeth (22), and the inner wall of the limiter (52) is protruded with connecting teeth. The connecting teeth mesh with the adjusting teeth (22) to realize the linkage between the limiter (52) and the valve core (2).

3. The anti-scalding faucet according to claim 2, characterized in that: The limiter (52) has a 7-shaped cross section, and a mounting platform (521) extends outward from its top. The mounting platform (521) is located above the rotating groove (4).

4. A scalding-proof faucet according to claim 3, characterized in that: The mounting platform (521) extends downward to provide a plug plate (522), which is installed and connected in the rotating groove (4). The connecting teeth are arranged across the inner wall of the extended mounting platform (521) and the plug plate (522).

5. A scalding-proof faucet according to claim 1, characterized in that: The top end face of the limiter (52) is marked with a hot and cold rotation mark (6).

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