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;It further includes bushing, limiting piece and elastic piece;By 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 adjustment of low temperature section;Only when pressing button, rotating handle can drive limit part to rotate in inner adjusting area, realize the water temperature adjustment of high temperature section;And the setting of having self-lubricating bushing also avoids 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 outer wall of the rotary handle shown has an externally open mounting groove. 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] However, 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

[0004] 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.

[0005] The present invention adopts the following solution:

[0006] 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;

[0007] The rotary handle is used to drive the valve stem of the temperature control valve core to rotate, and its side wall is provided with a first externally open mounting groove; the bushing is made of self-lubricating plastic material, and has a second externally open mounting cavity, which is locked in the mounting groove; the button is disposed in the mounting cavity; the elastic element acts on the bottom of the button; the limiting member is fixedly disposed relative to the rotary handle, and an arc segment is provided on one end face of the limiting member, the inner side of the arc segment forms an inner adjustment area, and the other side opposite the arc segment forms an outer adjustment area; the limiting pin is inserted radially into the button, and one end of the pin forms a limiting part;

[0008] 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.

[0009] Furthermore, the inner wall of the mounting groove is provided with a first step; the outer peripheral wall of the bushing is provided with a second step that matches the first step, so that the bushing can be engaged in the mounting groove.

[0010] Furthermore, both the mounting groove and the mounting cavity have clearance grooves on their side walls to allow the limiting pin to move; and both the mounting groove and the mounting cavity have drainage holes at least at their bottoms.

[0011] Furthermore, the inner wall of the mounting cavity is evenly provided with multiple axially arranged guide ribs.

[0012] Furthermore, the bottom of the mounting groove is provided with a first positioning groove or a first positioning post; the bottom of the bushing is provided with a second positioning post or a second positioning groove that is adapted to the first positioning groove or the first positioning post.

[0013] Furthermore, one end of the arc segment forms a limiting surface, and the other end is set on a limiting retaining wall.

[0014] This utility model also includes a shower faucet, comprising 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 a limiting member is sleeved on the thermostatic valve core.

[0015] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0016] This utility model provides a knob mechanism. By setting the inner and outer adjustment areas of the limiting member, in the normal state, that is, when the button is not pressed, rotating the handle can drive the limiting part to rotate in the outer adjustment area to achieve 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 to achieve water temperature adjustment in the high temperature range; and the setting of the self-lubricating bushing also avoids the situation where the button is repeatedly pressed and the rotating handle is scratched and the paint is chipped off. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the existing knob mechanism structure;

[0019] Figure 2 This is an exploded structural diagram of a knob mechanism according to an embodiment of the present utility model;

[0020] Figure 3 This is a cross-sectional structural schematic diagram of a knob mechanism according to an embodiment of the present utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of a shower faucet according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of a rotary handle of a knob mechanism according to an embodiment of the present invention. Figure 1 ;

[0023] Figure 6 This is a schematic diagram of the structure of a rotary handle of a knob mechanism according to an embodiment of the present invention. Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the structure of a bushing for a knob mechanism according to an embodiment of the present invention;

[0025] Figure 8 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;

[0026] Figure 9 This is a schematic diagram of the button structure of a knob mechanism according to an embodiment of the present utility model;

[0027] Icons: Rotary handle 1, Button 2, Limit pin 3, Bushing 4, Limiting component 5, Elastic component 6, Groove 7, Limiting cavity 8, Temperature control valve core 9, Mounting groove 10, First clearance groove 11, Mounting cavity 12, Second step 13, Second clearance groove 14, Through hole 15, Limiting step 16, Clearance hole 17, Arc segment 18, Limiting surface 19, Limiting retaining wall 20, Outer adjustment area 21, Inner adjustment area 22, Limiting part 23, First step 24, Drain hole 25. Detailed Implementation

[0028] 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.

[0029] Example

[0030] 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;

[0031] In this embodiment, as Figure 4 As shown, the installation of the knob mechanism onto the shower faucet will be explained in detail.

[0032] Specifically, such as Figure 5 and Figure 6 As shown, the rotary handle 1 includes a groove 7 with one end open. A limiting cavity 8, adapted to the valve stem of the temperature control valve core 9, is provided in the middle of the groove 7 for connecting with the valve stem and driving the valve stem to rotate, thereby controlling the temperature control valve core 9. A first externally open mounting groove 10 is provided on the side wall of the rotary handle 1; a first step 24 is provided on the inner side wall of the mounting groove 10; and a first clearance groove 11 is provided along the axial direction.

[0033] like Figure 7 As shown, the bushing 4 is made of self-lubricating plastic and has a mounting cavity 12 with a second external opening; a second step 13 adapted to the first step 24 is provided on the outer peripheral wall, so that the bushing 4 can be inserted from the first external opening and thus locked in the mounting groove 10; a second clearance groove 14 opposite to the first clearance groove 11 is provided on the side wall of the bushing 4. Figure 9 As shown, a through hole 15 is provided on the side wall of the button 2; the button 2 is installed in the mounting cavity 12. The limiting pin 3 passes through the clearance groove and is inserted into the through hole 15. Under the limiting action of the limiting pin 3, the button 2 will not come out of the mounting cavity 12. A limiting step 16 is provided inside the button 2, and a clearance hole 17 is provided at the bottom of the bushing 4. The elastic element 6 is a spring, the upper end of which abuts against the limiting step 16, and the lower end abuts against the bottom wall of the mounting groove 10 through the clearance hole 17.

[0034] like Figure 8As 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; an inner adjustment area 22 is formed inside the arc segment 18. One end of the limiting pin 3 forms a limiting part 23. 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, so that the limiting part 23 moves away from the limiting surface 19 and into the inner adjustment area 22, thereby allowing the rotating handle 1 to drive the limiting part 23 to rotate in the inner adjustment area 22.

[0035] 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 1 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.

[0036] In this embodiment, the mounting groove 10 and the mounting cavity 12 are provided with drainage holes 25 at least at their bottoms to better facilitate drainage and prevent scale buildup. The bushing 4 is made of a self-lubricating plastic material, which effectively prevents the button 2 from being scratched and chipped by the rotating handle 1 due to repeated pressing. The inner wall of the mounting cavity 12 is evenly provided with multiple axially arranged guide ribs (not shown in the figures) to further reduce friction with the button 2. The bottom of the mounting groove 10 is provided with a first positioning groove or a first positioning post; the bottom of the bushing 4 is provided with a second positioning post or a second positioning groove that matches the first positioning groove or the first positioning post, to facilitate the installation of the bushing 4.

[0037] This utility model also includes a shower faucet, comprising a thermostatic valve core 9 fixedly mounted on the faucet body, and a knob mechanism, wherein the rotating handle 1 is connected to the valve stem of the thermostatic valve core 9; and the limiting member 5 is sleeved on the thermostatic valve core 9. This knob mechanism effectively prevents accidental contact with the rotating handle 1, which could lead to the unexpected outflow of hot water and scalding of the user.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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 rotating handle (1) is used to drive the valve stem of the temperature control valve core (9) to rotate, and a first external opening mounting groove (10) is provided on its side wall; the bushing (4) is made of self-lubricating plastic material, and has a second external opening mounting cavity (12), which is locked in the mounting groove (10); the button (2) is set in the mounting cavity (12); the elastic element (6) acts on the bottom of the button (2); the limiting element (5) is fixed relative to the rotating handle (1), and an arc segment (18) is provided on one end face, the inner side of the arc segment (18) forms an inner adjustment area (22), and the other side opposite to the arc segment (18) forms an outer adjustment area (21); the limiting pin (3) is inserted radially 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 inner wall of the mounting groove (10) is provided with a first step (24); the outer peripheral wall of the bushing (4) is provided with a second step (13) that is adapted to the first step (24) so ​​that the bushing (4) can be locked in the mounting groove (10).

3. The knob mechanism according to claim 1, characterized in that, Both the mounting groove (10) and the mounting cavity (12) are provided with clearance grooves for the movement of the limiting pin (3); and the mounting groove (10) and the mounting cavity (12) are provided with drainage holes (25) at least at the bottom.

4. The knob mechanism according to claim 1, characterized in that, The inner wall of the mounting cavity (12) is provided with multiple axially arranged guide ribs.

5. The knob mechanism according to claim 1, characterized in that, The bottom of the mounting groove (10) is provided with a first positioning groove or a first positioning post; the bottom of the bushing (4) is provided with a second positioning post or a second positioning groove that is adapted to the first positioning groove or the first positioning post.

6. 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).

7. A shower faucet, comprising a thermostatic valve core (9) fixedly mounted on the faucet body, characterized in that, It also includes a knob mechanism as described in any one of claims 1 to 6, wherein the rotary handle (1) is connected to the valve stem of the temperature control valve core (9); and the limiting member (5) is sleeved on the temperature control valve core (9).

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