Knob mechanism and shower faucet

Abstract

The utility model provides a kind of knob mechanism and shower faucet, knob mechanism includes rotating handle, button, limit pin;Its characterized in that, still include bushing, limiting piece and elastic piece.The setting of the inner adjusting area and the outer adjusting area of limiting piece, it can drive limit part to rotate in outer adjusting area by rotating handle in normal state, that is, when not pressing button, realize the water temperature regulation of low temperature section;Only when pressing button, rotating handle can drive limit part to rotate in inner adjusting area, realize the water temperature regulation of high temperature section;And the setting of having self-lubricating bushing, it can be directly installed in mounting cavity from the opening end of chamber, installation is convenient and fast also make rotating handle molding simple;Also avoid the situation that button is repeatedly pressed and is scratched by rotating handle.

Description

Technical Field

[0001] This utility model relates to the field of bathroom fixtures technology, and more specifically, to a knob mechanism and a shower faucet. Background Technology

[0002] Currently, for shower faucets that use a rotary handle for temperature adjustment, to prevent accidental spillage of hot water and scalding from users, a limiting mechanism is usually added. This mechanism typically includes a button and a limit pin. Figure 1 The rotary handle shown has an open mounting cavity for connecting to the valve core, and an open mounting groove is provided on the outer side wall. The button is installed in the mounting groove, and the limiting pin is inserted into the side wall of the button and placed inside the rotary handle. The button can move along the axial direction of the mounting groove so that the limiting pin can be limited or released, thereby allowing the rotary handle to rotate or rotate further.

[0003] The mounting cavity and mounting groove of the rotary handle are set with openings in two vertical directions. The forming mold needs to have core-pulling elements of a certain length in these two directions that are adapted to the shape of the mounting cavity and mounting groove, making the mold relatively complex.

[0004] Furthermore, in actual use, this structure has the following shortcomings: the rotary handle is usually made of metal, and the button often gets scratched or even has paint peeled off after being pressed repeatedly in the mounting slot. In particular, when the pressing pressure is uneven and the button is pressed at an angle, the paint on the outer surface of the button is very easy to be scratched off. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a knob mechanism and a shower faucet to solve the above problems.

[0006] The present invention adopts the following solution:

[0007] This application provides a knob mechanism, including a rotary handle, a button, and a limit pin; it also includes a bushing, a limit member, and an elastic member;

[0008] The rotary handle has a chamber with one open end and a through hole on its side wall; the chamber is positioned on one side of the through hole to form a mounting cavity; the bushing is made of self-lubricating plastic and has a mounting groove with one open end; the bushing enters the mounting cavity from the open end of the chamber, the opening of the mounting groove is opposite to the through hole, and the inner diameter of the mounting groove is smaller than the diameter of the through hole; the bushing has a clearance groove on its side wall; the button is movably disposed in the mounting groove; the elastic element is disposed in the mounting groove and acts on the button;

[0009] The limiting member is fixedly disposed relative to the rotating handle, and an arc segment is provided on one end face of the limiting member. An inner adjustment area is formed on the inner side of the arc segment, and an outer adjustment area is formed on the other side opposite to the arc segment. The limiting pin passes radially through the clearance groove and is inserted into the button, and a limiting part is formed at one end of the pin.

[0010] When the button is not pressed, the rotating handle can drive the limiting part to rotate in the outer adjustment area; while when the button is pressed, the rotating handle can drive the limiting part to rotate in the inner adjustment area.

[0011] Furthermore, the end face of the mounting groove has a protrusion that is placed inside the through hole.

[0012] Furthermore, the bushing has a fixing part protruding on both sides, and the fixing part has a first mounting hole; the chamber has a fixing post protruding along the axial direction, and the fixing post has a second mounting hole opposite to the first mounting hole.

[0013] Furthermore, the bottom of the bushing is provided with multiple drainage holes.

[0014] Furthermore, a limiting cavity is provided in the chamber for connecting the valve stem of the temperature regulating valve core; and the bottom of the drain hole and the upper end of the limiting cavity have a certain clearance space.

[0015] Furthermore, the inner wall of the mounting groove is evenly provided with multiple axially arranged guide ribs.

[0016] Furthermore, one end of the arc segment forms a limiting surface, and the other end is set on a limiting retaining wall.

[0017] This utility model also provides a shower faucet, including a thermostatic valve core fixed on the faucet body, and a knob mechanism, wherein the rotating handle is connected to the valve stem of the thermostatic valve core; and the limiting member is sleeved on the thermostatic valve core.

[0018] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0019] This utility model provides a knob mechanism. Through the setting of an inner and outer adjustment area of ​​the limiting member, in the normal state (i.e., when the button is not pressed), rotating the handle can drive the limiting part to rotate in the outer adjustment area, achieving water temperature adjustment in the low-temperature range. Only when the button is pressed can rotating the handle drive the limiting part to rotate in the inner adjustment area, achieving water temperature adjustment in the high-temperature range. The self-lubricating bushing allows it to be directly installed into the mounting cavity from the opening end of the chamber, making installation convenient and quick, and simplifying the forming of the rotary handle. It also avoids the situation where repeated pressing of the button causes scratches and paint damage from the rotary handle. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the existing knob mechanism structure;

[0022] Figure 2 This is an exploded structural diagram of a knob mechanism according to an embodiment of the present utility model;

[0023] Figure 3 This is a cross-sectional structural schematic diagram of a knob mechanism according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the rotating handle structure of a knob mechanism according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a bushing for a knob mechanism according to an embodiment of the present invention. Figure 1 ;

[0026] Figure 6 This is a schematic diagram of the structure of a bushing for a knob mechanism according to an embodiment of the present invention. Figure 2 ;

[0027] Figure 7 This is a schematic diagram of the structure of a limiting member of a knob mechanism according to an embodiment of the present utility model;

[0028] Figure 8 This is a schematic diagram of the button structure of a knob mechanism according to an embodiment of the present utility model;

[0029] Figure 9 This is a cross-sectional structural diagram of a shower faucet with a knob mechanism according to an embodiment of the present utility model;

[0030] Icons: 1. Rotary handle; 2. Button; 3. Limit pin; 4. Bushing; 5. Limiting component; 6. Elastic component; 7. Chamber; 8. Limiting cavity; 9. Temperature regulating valve core; 10. Through hole; 11. Mounting groove; 12. Fixing part; 13. First mounting hole; 14. Fixing column; 15. Circular groove; 16. Through hole; 17. Limiting step; 18. Arc segment; 19. Limiting surface; 20. Limiting retaining wall; 21. Outer adjustment area; 22. Inner adjustment area; 23. Limiting part; 24. Limiting groove; 25. Drain hole; 26. Protrusion; 27. Temperature regulating valve core; 28. Guide rib. Detailed Implementation

[0031] 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. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] Example

[0033] Combination Figures 2 to 9 As shown, this embodiment provides a knob mechanism, including a rotary handle 1, a button 2, and a limiting pin 3; it also includes a bushing 4, a limiting member 5, and an elastic member 6;

[0034] like Figure 4 As shown, the rotary handle 1 has a chamber 7 with one end open and a through hole 10 provided on the side wall; the chamber 7 is placed on one side of the through hole 10 to form an installation cavity 9; a limiting cavity 8 is provided at the axis of the chamber 7 for connecting the valve stem of the temperature regulating valve core 27.

[0035] like Figure 5 and Figure 6 As shown, the bushing 4 is made of self-lubricating plastic and has a mounting groove 11 with one open end. Fixing portions 12 protrude from both sides of the bushing 4, and the fixing portions 12 have first mounting holes 13. A fixing post 14 protrudes from the cavity 7 along its axial direction, and the fixing post 14 has a second mounting hole opposite to the first mounting hole 13. The bushing 4 enters the mounting cavity 9 from the open end of the cavity 7, so that the second mounting hole and the first mounting hole 13 are opposite each other, and is fixed with screws. The opening of the mounting groove 11 is opposite to the through hole 10, and the inner diameter of the mounting groove 11 is smaller than the diameter of the through hole 10 to avoid the button 2 scraping against the through hole 10 of the rotating handle 1. An avoidance groove 15 is provided on the side wall of the bushing 4; Figure 8The button 2 has a through hole 1610 on its side wall and a limiting step 17 in its inner cavity. The button 2 is movably disposed within the mounting groove 11. The limiting pin 3 passes radially through the clearance groove 15 and is inserted into the through hole 1610 of the button 2, with one end forming a limiting portion 23. The bottom of the mounting groove 11 has a limiting groove 24 opposite to the limiting step 17. The elastic element 6 is a spring, with its two ends abutting against the limiting step 17 and the limiting groove 24, respectively. Under the action of the limiting pin 3 and the spring, the button 2 can drive the limiting pin 3 to move within the range of the clearance groove 15.

[0036] The self-lubricating bushing 4 can be directly installed in the mounting cavity 9 from the opening end of the cavity 7, making installation convenient and quick and simplifying the forming of the rotary handle 1; it also avoids the situation where the button 2 is repeatedly pressed and scratched by the rotary handle 1, causing paint to be chipped.

[0037] like Figure 7 and Figure 9 As shown, the limiting member 5 is a through-hole boss; it is fixedly sleeved on the temperature control valve. An arc segment 18 is provided on the bottom wall of the larger end. One end of the arc segment 18 forms a limiting surface 19, and the other end is provided on a limiting baffle 20. The outer adjustment area 21 is formed between the limiting surface 19 and the outer end face of the baffle; the inner adjustment area 22 is formed on the inner side of the arc segment 18. In the normal state, the limiting part 23 is placed in the outer adjustment area 21, that is, when the button 2 is not pressed, the rotating handle 1 can drive the limiting part 23 to rotate in the outer adjustment area 21; while when the button 2 is pressed, the limiting pin 3 moves down along the clearance groove 15, so that the limiting part 23 moves away from the limiting surface 19 and into the inner adjustment area 22, thereby the rotating handle 1 can drive the limiting part 23 to rotate in the inner adjustment area 22.

[0038] The outer adjustment zone 21 is designed to adjust the water temperature in the low-temperature range, while the inner adjustment zone 22 is designed to adjust the water temperature in the high-temperature range. Thus, the rotating handle 11 can only rotate the limiting part 23 in the inner adjustment zone 22 when the button 2 is pressed, thereby adjusting the water temperature in the high-temperature range; this prevents accidental contact with the rotating handle 1 from causing hot water to flow out unexpectedly and scalding the user.

[0039] Furthermore, such as Figure 3 and Figure 5 As shown, the end face of the mounting groove 11 has a protrusion 26, which is placed inside the through hole 10. It can form an effective positioning, which facilitates the installation of the bushing 4. At the same time, it can also prevent the button 2 from scratching the through hole 10 and causing paint to fall off.

[0040] In this embodiment, the bottom of the bushing 4 is provided with multiple drainage holes 25, and the bottom of the drainage holes 25 has a certain clearance space with the upper end of the limiting groove 24. This allows water entering the mounting groove 11 to be discharged more effectively. The inner wall of the mounting groove 11 is evenly provided with multiple axially arranged guide ribs 28 to further reduce friction with the side wall of the button 2.

[0041] This utility model also provides a shower faucet, including a thermostatic valve core 27 fixed on the faucet body, and a knob mechanism. The rotating handle 1 is connected to the valve stem of the thermostatic valve core 27; the limiting member 5 is sleeved on the thermostatic valve core 27. This knob mechanism effectively prevents accidental contact with the rotating handle 1, which could lead to the unexpected flow of hot water and scalding of the user.

[0042] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A knob mechanism, comprising a rotary handle (1), a button (2), and a limiting pin (3); characterized in that, It also includes a bushing (4), a limiting element (5), and an elastic element (6); The rotary handle (1) has a chamber (7) with one end open and a through hole (10) on its side wall; the chamber (7) is placed on one side of the through hole (10) to form a mounting cavity (9); the bushing (4) is made of self-lubricating plastic material and has a mounting groove (11) with one end open; the bushing (4) enters from the opening end of the chamber (7) and is installed in the mounting cavity (9); the opening of the mounting groove (11) is opposite to the through hole (10), and the inner diameter of the mounting groove (11) is smaller than the diameter of the through hole (10); the bushing (4) has a clearance groove (15) on its side wall; the button (2) is movably disposed in the mounting groove (11); the elastic element (6) is disposed in the mounting groove (11) and acts on the button (2); The limiting member (5) is fixedly disposed relative to the rotating handle (1), and an arc segment (18) is provided on one end face. An inner adjustment area (22) is formed on the inner side of the arc segment (18), and an outer adjustment area (21) is formed on the other side opposite to the arc segment (18). The limiting pin (3) passes radially through the clearance groove (15) and is inserted into the button (2), and a limiting part (23) is formed at one end of it. When the button (2) is not pressed, the rotating handle (1) can drive the limiting part (23) to rotate in the outer adjustment area (21); while when the button (2) is pressed, the rotating handle (1) can drive the limiting part (23) to rotate in the inner adjustment area (22).

2. The knob mechanism according to claim 1, characterized in that, The end face of the mounting groove (11) is provided with a protrusion (26) which is placed inside the through hole (10).

3. The knob mechanism according to claim 1, characterized in that, The bushing (4) has a fixing part (12) protruding on both sides, and the fixing part (12) has a first mounting hole (13); the chamber (7) has a fixing post (14) protruding along the axial direction, and the fixing post (14) has a second mounting hole opposite to the first mounting hole (13).

4. The knob mechanism according to claim 1, characterized in that, The bottom of the bushing (4) is provided with multiple drainage holes (25).

5. The knob mechanism according to claim 4, characterized in that, The chamber (7) is provided with a limiting cavity (8) for connecting the valve stem of the temperature regulating valve core (27); and the bottom of the drain hole (25) has a certain clearance space with the upper end of the limiting cavity (8).

6. The knob mechanism according to claim 1, characterized in that, The inner wall of the mounting groove (11) is provided with multiple axially arranged guide ribs.

7. The knob mechanism according to claim 1, characterized in that, One end of the arc segment (18) forms a limiting surface (19), and the other end is set on the limiting retaining wall (20).

8. A shower faucet, comprising a thermostatic valve core (27) fixedly mounted on the faucet body, characterized in that, It also includes a knob mechanism as described in any one of claims 1 to 7, wherein the rotary handle (1) is connected to the valve stem of the temperature control valve core (27); and the limiting member (5) is sleeved on the temperature control valve core (27).

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