Temperature limiting structure of thermostatic valve core
Through the combined design of the temperature limiting ring and adjustment screw, the problem of the water outlet temperature in the high-temperature section of the constant temperature faucet cannot be accurately controlled, and the precise adjustment of the water outlet temperature of multiple stages and the improvement of production efficiency is achieved.
Patent Information
- Application Number
- CN202421684374.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In the multi-stage temperature adjustment of the existing constant temperature faucet, the maximum water outlet temperature in the high-temperature section cannot be accurately controlled, resulting in the production of multiple specifications of temperature limiting rings and debugging one by one, which cannot ensure uniformity.
A temperature limiting structure of a constant temperature valve core is designed. Through the combination of a temperature limiting ring, a temperature adjusting handwheel and a adjustment screw, the multi-section accurate limit of the positioning pin is achieved. The adjustment screw can adjust the position of the positioning pin to control the outlet temperature of the high-temperature section.
It realizes precise control of the effluent temperature in the high-temperature section, simplifies the production process, reduces the diversified demand for temperature limiting ring specifications, and improves production efficiency.
Smart Images
Figure CN223049515U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of adjustable bathroom faucets. More specifically, the utility model relates to a temperature limiting structure of a constant temperature valve core. Background Art
[0002] In the existing constant temperature faucet, a temperature limiting ring is arranged between the constant temperature valve core and the temperature regulating handwheel. A positioning pin is arranged on the temperature regulating handwheel, and a limiting block is usually arranged on the temperature limiting ring. When the temperature regulating handwheel rotates in one direction to a certain extent, the positioning pin on it abuts against the limiting block, so that the temperature regulating handwheel cannot rotate any more. At this time, the outlet water temperature of the constant temperature faucet is fixed at about 40°C.
[0003] In order to meet the requirements of different consumer groups for water temperature, at present, many constant temperature faucets have a two-stage temperature adjustment mode, namely a conventional temperature section and a high temperature section. After the outlet water temperature reaches the highest value of the conventional temperature section, the user can make the positioning pin displace by pressing a button or other means. Usually, a second limiting block is arranged on the temperature limiting ring in this method. When the positioning pin is stuck on the second limiting block due to the rotation of the temperature regulating handwheel, the highest temperature of the high temperature section is reached. For example, the authorized announcement number CN214743708U discloses a temperature limiting device of a constant temperature faucet. Through the cooperation of the positioning ball and the positioning hole, the adjustment range of the temperature limiting device can be improved. However, for such temperature limiting rings with multiple temperature sections, there is an actual problem that the highest outlet water temperature of the higher temperature section cannot be accurately guaranteed in the actual production process. First of all, for the constant temperature magnetic valves used in constant temperature faucets, there are certain differences in the setting of the temperature packages even for different brands or the same brand and the same specification. After determining the screwing stroke of the adjustment knob when the constant temperature magnetic valve reaches the highest temperature of the conventional temperature section, the screwing strokes of the adjustment knob from the highest temperature of the conventional temperature section to the highest temperature of the high temperature section are different. Since the temperature limiting ring has the same size specification, the screwing strokes of the temperature regulating handwheels of each constant temperature faucet are forced to be the same. Therefore, when the highest outlet water temperature of the conventional temperature section of the constant temperature faucet with multiple highest outlet water temperatures is the same, the highest outlet water temperature of the high temperature section cannot be accurately controlled. In production, it is necessary to batch produce temperature limiting rings of multiple specifications and debug them one by one to ensure that the highest outlet water temperature of the high temperature section is the same. Therefore, it is necessary to propose a new type of temperature limiting structure that can conveniently control the stroke of the adjustment knob of the constant temperature magnetic valve in multiple segments accurately. Summary of the Utility Model
[0004] An object of the utility model is to provide a temperature limiting structure of a constant temperature valve core, which can accurately and conveniently limit the stroke of the adjustment knob of the constant temperature magnetic valve in multiple segments, so as to ensure that the multiple outlet water temperatures can be accurately determined.
[0005] To achieve these objects and other advantages of the present utility model, according to one aspect of the present utility model, a temperature limiting structure for a constant temperature valve core is provided, which is sleeved at the end of the constant temperature valve core. The end of the constant temperature valve core is sequentially provided with an outer peripheral tooth groove and an adjustment knob. The temperature limiting structure includes:
[0006] A temperature limiting ring, which is sleeved on the outer periphery of the outer peripheral tooth groove of the constant temperature valve core. A flange is provided at one end of the temperature limiting ring away from the constant temperature valve core. An arc-shaped stop strip is provided along the circumferential direction on the surface of the flange away from the constant temperature valve core. A first convex block extends from the arc-shaped stop strip towards the center of the circle. A first through hole is opened in the first convex block parallel to the circumferential direction of the flange. An adjustment screw is fixedly sleeved and fixed in the first through hole; A temperature adjustment handwheel, which is meshed and sleeved on the adjustment knob of the constant temperature valve core. A reserved through hole is provided on the outer wall of the temperature adjustment handwheel. A pressing column is sleeved in the reserved through hole. A positioning pin is connected to the part of the pressing column located inside the temperature adjustment handwheel. The end of the positioning pin faces the temperature limiting ring; Among them, the rotation of the temperature adjustment handwheel drives the positioning pin to move along the circumferential direction of the flange. The axial movement of the pressing column in the reserved through hole drives the positioning pin to move radially along the flange. The end of the arc-shaped stop strip forms the first touch point of the positioning pin, and the end of the adjustment screw forms the second touch point of the positioning pin.
[0007] Preferably, an internal thread matching the adjustment screw is provided inside the first through hole.
[0008] Preferably, the first convex block is located at the end of the arc-shaped stop strip.
[0009] Preferably, a fixed cylinder is provided inside the temperature adjustment handwheel, which is coaxially and sleeved with the adjustment knob in a matching manner.
[0010] Preferably, a return spring is connected between one end of the pressing column located inside the temperature adjustment handwheel and the fixed cylinder.
[0011] Preferably, a limiting shell is connected between the reserved through hole and the fixed cylinder. The pressing column and the return spring are both located inside the limiting shell. A positioning pin limiting hole is opened on the limiting shell to pass through the positioning pin.
[0012] Preferably, a direction indicator is provided on the side wall of the temperature adjustment handwheel.
[0013] The present utility model at least includes the following beneficial effects:
[0014] First, for the temperature limiting structure of the constant temperature valve core provided by the present utility model, through the adjustment screw, the clamping position of the positioning pin on the temperature limiting ring can be effectively controlled in the high-temperature section water outlet mode;
[0015] Second, for the temperature-limiting structure of the constant-temperature valve core provided by the present utility model, in the production and processing process, the positioning ring can be produced only in the same specification, without the need to produce multiple specifications.
[0016] Other advantages, objectives, and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present utility model will be further described in detail below in conjunction with the drawings and embodiments:
[0018] Figure 1 It is an assembly schematic diagram of the temperature-limiting structure of the constant-temperature valve core of the present utility model;
[0019] Figure 2 It is a usage schematic diagram of the temperature-limiting ring in the temperature-limiting structure of the constant-temperature valve core of the present utility model;
[0020] Figure 3 It is a usage state schematic diagram of the temperature-adjusting handwheel in the temperature-limiting structure of the constant-temperature valve core of the present utility model;
[0021] Figure 4 It is a disassembly schematic diagram of the temperature-adjusting handwheel in the temperature-limiting structure of the constant-temperature valve core of the present utility model;
[0022] Figure 5 It is a working schematic diagram of the temperature-limiting structure of the constant-temperature valve core of the present utility model at the highest outlet water temperature in the conventional temperature range;
[0023] Figure 6 It is a working schematic diagram of the temperature-limiting structure of the constant-temperature valve core of the present utility model at the highest outlet water temperature in the high temperature range.
[0024] Legend: 1-temperature-adjusting handwheel, 10-fixed cylinder, 11-pressing column, 111-reset spring, 12-positioning pin, 13-reserved through hole, 14-limiting shell, 140-positioning pin limiting hole, 2-temperature-limiting ring, 20-temperature-limiting ring sleeve, 21-flange piece, 22-arc-shaped stop bar, 23-first convex block, 230-first through hole, 24-adjusting screw, 3-constant-temperature magnetic valve, 31-peripheral tooth groove, 32-adjusting knob, 4-valve core gland, 5-positioning piece, 6-valve core seat. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The present utility model will be further described in detail below in conjunction with the drawings, so that those skilled in the art can implement it according to the description in the specification.
[0026] It should be understood that the terms such as "having", "comprising", and "including" used herein do not exclude the presence or addition of one or more other elements or their combinations.
[0027] It should be noted that the experimental methods described in the following implementation schemes are all conventional methods unless otherwise specified, and the components can be obtained from commercial channels unless otherwise specified; in the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, they can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0028] As Figures 1 to 6 shown, the technical solution of the present application provides a temperature-limiting structure for a thermostatic valve core, which is sleeved on the end of the thermostatic valve core 3. The end of the thermostatic valve core 3 is sequentially provided with an outer peripheral tooth groove 31 and an adjustment knob 32. The temperature-limiting structure includes:
[0029] A temperature-limiting ring 2, which is sleeved on the outer periphery of the outer peripheral tooth groove 31 of the thermostatic valve core 3. One end of the temperature-limiting ring 2 away from the thermostatic valve core 3 is provided with a flange 21. The surface of the flange 21 away from the thermostatic valve core 3 is provided with an arc-shaped stop bar 22 along the circumferential direction. The arc-shaped stop bar 22 extends towards the center of the circle to form a first convex block 23, and a first through hole 230 is opened in the circumferential direction parallel to the flange 21 thereon. An adjustment screw 24 is fixedly sleeved and fixed in the first through hole 230; A temperature adjustment handwheel 1, which is meshed and sleeved on the adjustment knob 32 of the thermostatic valve core 3. A reserved through hole 13 is provided on the outer wall of the temperature adjustment handwheel 1. A pressing column 11 is sleeved in the reserved through hole 13. A positioning pin 12 is connected to the part of the pressing column 11 located inside the temperature adjustment handwheel 1, and the end of the positioning pin 12 faces the temperature-limiting ring 2; Among them, the rotation of the temperature adjustment handwheel 1 drives the positioning pin 12 to move along the circumferential direction of the flange 21, and the axial movement of the pressing column 11 in the reserved through hole 13 drives the positioning pin 12 to move radially along the flange 21. The end of the arc-shaped stop bar 22 forms the first touch point of the positioning pin 12, and the end of the adjustment screw 24 forms the second touch point of the positioning pin 12.
[0030] In this technical solution, as Figure 1As shown, the thermostatic faucet includes a valve core seat 6, a thermostatic magnetic valve 3, a positioning piece 5, a valve core gland 4, a temperature limit ring 2 and a temperature adjustment handwheel 1 that are sequentially joined together. The valve core seat 6 is fixed to the wall or tabletop of the bathroom and is connected to the cold and hot water pipelines. The thermostatic valve core 3 is sleeved in the valve core seat 6 and extends out at one end. The positioning piece 5 is provided with a card slot to ensure that the main body part of the thermostatic valve core 3 does not rotate or displace within the valve core seat 6. The outer periphery of the thermostatic valve core 3 is provided with an outer peripheral tooth groove 31. The temperature limit ring 3 includes a temperature limit ring sleeve 20 and a flange piece 21. The inner cylinder of the temperature limit ring sleeve 20 is provided with a tooth groove matching the outer peripheral tooth groove 31. When the temperature limit ring sleeve 20 is sleeved on the outer peripheral tooth groove 31 of the thermostatic valve core 3, it remains in a fixed state. The arc-shaped stop bar 22 is fixed to the outermost periphery of the flange piece 21. The arc-shaped stop bar 22 extends a first convex block 23 towards the center of the circle. A first through hole 230 is opened on the first convex block 23. The adjusting screw 24 passes through the first through hole 230 and is fixed to the first convex block 23 by a nut or other forms. The adjusting knob 32 passes through the temperature limit ring 2 and meshes with the temperature adjustment handwheel 1. The rotation of the temperature adjustment handwheel 1 drives the rotation of the adjusting knob 32.
[0031] In this technical solution, the adjustment of the outlet water temperature depends on the screwing stroke of the adjusting knob 32. When the end of the arc-shaped stop bar 22 abuts against the positioning pin 12 and the temperature adjustment handwheel 1 can no longer rotate, in this case, the outlet water temperature corresponding to the screwing stroke of the adjusting knob 32 is exactly the highest outlet water temperature in the conventional temperature range. And when the end of the adjusting screw 24 abuts against the positioning pin 12 and the temperature adjustment handwheel 1 can no longer rotate, in this case, the outlet water temperature corresponding to the screwing stroke of the adjusting knob 32 is exactly the highest temperature in the high temperature range. When the outlet water temperature is in the conventional temperature range, the user does not press the pressing column 11. At this time, the circular motion trajectory of the positioning pin 12 exactly coincides with the arc-shaped stop bar 22 and is blocked by the end of the arc-shaped stop bar 22. When the positioning pin 12 abuts against the end of the arc-shaped stop bar 22, the screwing stroke of the adjusting knob 32 exactly makes the controlled outlet water temperature of the thermostatic valve core 3 the highest temperature in the conventional temperature range. When the user presses the pressing column 11 to enter the high temperature range outlet water mode, at this time, the pressing column 11 moves towards the inside of the temperature adjustment handwheel 1 along the reserved through hole 13, driving the position of the positioning pin 12 to change. At this time, the motion trajectory of the positioning pin 12 exactly coincides with the first convex block 23. Since the adjusting screw 24 is sleeved on the first convex block 23, the positioning pin 12 will abut against the end of the adjusting screw 24. The adjusting screw 24 can be appropriately adjusted in position on the first convex block 23 and can be replaced with adjusting screws 24 of different lengths when the size and length are not appropriate.
[0032] In this technical solution, after the stroke of the adjustment knob 32 in the normal temperature range is confirmed, the stroke corresponding to the highest outlet water temperature in the high temperature range cannot ensure precise and uniform adjustment for each thermostatic valve core 3. Since the extension amount of the adjustment screw 24 from the first convex block 23 can be adjusted, the operator can control the stroke of the adjustment knob 32 by adjusting the extension amount of the adjustment screw 24, so as to achieve the purpose of accurately and uniformly setting the highest outlet water temperature in the high temperature range of the thermostatic faucet.
[0033] In another technical solution, internal threads matching the adjustment screw 24 are provided inside the first through hole 230, and the position of the adjustment screw 24 can be adjusted and fixed by rotation.
[0034] In another technical solution, the first convex block 23 is located at the end of the arc-shaped strip 22. As shown in Figure 2 (a) and Figure 2 (b), the process of screwing the adjustment screw 24 is not affected by the arc-shaped strip 22.
[0035] In another technical solution, a fixed cylinder 10 is provided inside the temperature adjustment handwheel 1, which is coaxially and matingly sleeved with the adjustment knob 32. Tooth grooves are provided on the outer circumference of the adjustment knob 32, and corresponding tooth grooves are provided on the inner cylinder wall of the fixed cylinder 10. The fixed cylinder 10 can be fixedly sleeved on the outer circumference of the adjustment knob 32.
[0036] In another technical solution, a return spring 111 is connected between one end of the pressing column 11 inside the temperature adjustment handwheel 1 and the fixed cylinder 10. As shown in Figure 4 , when the water outlet is in the normal temperature range, the user does not need to press the pressing column 11, and the return spring 111 is not compressed. When the water outlet is in the high temperature range, the user needs to first press the pressing column 11 and continue to turn the temperature adjustment handwheel 1. At this time, the return spring 111 is compressed, the positioning pin 12 changes its movement trajectory and is blocked by the inner side wall of the arc-shaped strip 22. The user can release the pressing column 11 after pressing and turning it once. When the user turns the temperature adjustment handwheel 1 back so that the position of the positioning pin 12 moves out of the restricted range of the arc-shaped strip 22, the return spring 111 returns from the compressed state, the pressing column 11 rebounds to the initial position, and the movement trajectory of the positioning pin 12 returns to conflict with the end of the arc-shaped strip 22. At this time, when the user turns the temperature adjustment handwheel 1 again, the positioning pin 12 is stuck at the end of the arc-shaped strip 22.
[0037] In another technical solution, a limiting shell 14 is connected between the reserved through hole 13 and the fixed cylinder 10. The pressing column 11 and the return spring 111 are both located inside the limiting shell 14. A positioning pin limiting hole 140 is formed in the limiting shell 14 to allow the positioning pin 12 to pass through. The pressing column 111 is restricted by the displacement of the limiting shell 14 and can only displace axially. The positioning pin limiting hole 140 is strip-shaped. Since the positioning pin 12 is inserted into the positioning pin limiting hole 140, the pressing column 111 will not rotate.
[0038] In another technical solution, a direction indication is provided on the side wall of the temperature adjustment handwheel 11, so that the user can obtain information on temperature increase or decrease when the temperature adjustment handwheel 1 is screwed clockwise or counterclockwise.
[0039] The number of components and the processing scale described here are used to simplify the description of the present invention. The application, modification, and variation of the present invention are obvious to those skilled in the art.
[0040] Although the embodiments of the present invention have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples described here.
Claims
1. The temperature limiting structure of the thermostatic valve core is sleeved on the end of the thermostatic valve core, and the end of the thermostatic valve core is sequentially provided with peripheral teeth and an adjusting button, characterized in that: The temperature limiting structure comprises: A temperature limiting ring, which is clamped on the outer periphery of the outer peripheral tooth groove of the thermostatic valve core, a flange piece is provided at one end of the temperature limiting ring away from the thermostatic valve core, and an arc-shaped stop bar is provided along the circumferential direction on one side of the flange piece away from the thermostatic valve core, and a first protrusion is extended toward the center of the circle on the arc-shaped stop bar, and a first through hole is opened on the arc-shaped stop bar parallel to the circumferential direction of the flange piece, and an adjusting screw is matched and fixed in the first through hole; A temperature control hand wheel, which is engaged with the card sleeve on the adjusting button of the thermostatic valve core, the outer wall of the temperature control hand wheel is provided with a reserved through hole, a pressing column is sleeved in the reserved through hole, and the part of the pressing column located in the temperature control hand wheel is connected with a positioning pin, and the end of the positioning pin faces the temperature limiting ring; Among them, the rotation of the temperature control hand wheel drives the positioning pin to move circumferentially along the flange piece, and the axial movement of the pressing column in the reserved through hole drives the positioning pin to move radially along the flange piece. The end of the arc-shaped strip forms the first contact pressure point of the positioning pin, and the end of the adjusting screw forms the second contact pressure point of the positioning pin.
2. The temperature limiting structure of the thermostatic valve core according to claim 1, characterized in that: An internal thread matching the adjusting screw is arranged inside the first through hole.
3. The temperature limiting structure of the thermostatic valve core according to claim 2, characterized in that: The first protrusion is located at the end of the arc-shaped baffle.
4. The temperature limiting structure of the thermostatic valve core according to claim 3, characterized in that: A fixing sleeve is arranged inside the temperature regulating hand wheel, and the fixing sleeve is coaxially matched with the regulating knob.
5. The temperature limiting structure of the thermostatic valve core according to claim 4, characterized in that: A return spring is connected between one end of the pressing column located in the temperature regulating hand wheel and the fixing cylinder.
6. The temperature limiting structure of the thermostatic valve core according to claim 5, characterized in that: A limiting shell is connected between the reserved through hole and the fixing cylinder, the pressing column and the return spring are both located in the limiting shell, and a positioning pin limiting hole is provided on the limiting shell to allow the positioning pin to pass through.
7. The temperature limiting structure of the thermostatic valve core according to claim 6, characterized in that: The side wall of the temperature regulating hand wheel is provided with a direction indicator.