CN211501809U

CN211501809U - Thermostatic faucet

Info

Publication number: CN211501809U
Application number: CN201922339266.XU
Authority: CN
Inventors: 王灵勇; 陈杰; 陈世亮; 张佳奇
Original assignee: Hangzhou Boda Design Consulting Co ltd
Current assignee: Hangzhou Boda Design Consulting Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-15
Anticipated expiration: 2029-12-24

Abstract

The utility model discloses a constant temperature tap, including leading casing, cold water interface of intaking, hot and cold water mixing chamber mixes the water outlet, is equipped with temperature adjusting valve core in the water inlet department in hot and cold water mixing chamber, temperature adjusting valve core's valve rod passes through the clutch and is connected with motor drive. The utility model discloses a constant temperature tap through simple institutional advancement, just can avoid driving motor to prolong the life of valve and motor at the impact that the extreme position caused to the valve.

Description

Thermostatic faucet

Technical Field

The utility model relates to a tap, especially a constant temperature tap that can mix cold water and hot water.

Background

The invention patent of the Chinese patent with the patent number of 200510040756.X discloses an intelligent temperature control water mixing faucet, which comprises a faucet shell 1 with a cold water inlet port 2, a hot water inlet port 3 and a water mixing outlet 4, a valve core 5 at the junction of cold water and hot water inlet channels in the faucet shell 1, a motor 6, a temperature measuring sensing element 9 and a control driving circuit, wherein a valve rod of the valve core 5 is connected with the motor 6. However, the technical solution of the invention still has a defect: when the motor drives the valve rod, the two limit positions are completely closed or completely opened, the motor rotates from quick to sudden rest, the torque and momentum of the motor can cause great impact on the valve, the service life of the valve and the motor is influenced, and if the stepping motor is adopted, the cost is high although the rotation and the stop of the motor can be accurately controlled.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a constant temperature tap through simple institutional advancement, just can avoid driving motor to prolong the life of valve and motor at the impact that the extreme position caused to the valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the constant temperature faucet comprises a faucet shell, a cold water inlet connector, a hot water inlet connector, a cold and hot water mixing cavity and a mixed water outlet, wherein a water temperature adjusting valve core is arranged at the water inlet of the cold and hot water mixing cavity, and a valve rod of the water temperature adjusting valve core is in transmission connection with a motor through a clutch.

The clutch includes: the clutch comprises a first clutch disc fixedly connected to a motor rotating shaft and a second clutch disc connected to a valve rod in an axially sliding mode, wherein a spring used for pushing the second clutch disc to the first clutch disc is arranged on the valve rod, inclined teeth are radially arranged on the end face of the first clutch disc and the end face of the second clutch disc, the first clutch disc and the second clutch disc are meshed through the inclined teeth, when the torque force of a motor is larger than the surface friction force meshed with the inclined teeth, the second clutch disc overcomes the elastic force of the spring to axially move away from the first clutch disc, and the clutch is disengaged.

The valve rod is provided with a shaft notch surface, and the central hole of the second disc of the clutch is provided with a circular notch surface matched with the shaft notch surface, so that the valve rod and the second disc of the clutch rotate synchronously.

A temperature sensor is arranged in the cold and hot water mixing cavity, and the temperature sensor and the motor are electrically connected with the electric control device through corresponding leads.

Compared with the prior art, the beneficial effects of the utility model are that: by adopting the technical scheme, the valve rod of the water temperature adjusting valve core is in transmission connection with the motor through the clutch, and the structure can prevent the motor from blocking rotation and damaging the valve or the motor as long as the preset clutch is disengaged under large torsion.

The further beneficial effects are that: the clutch with the structure has the advantages that the structure is simple, the size is small, and the torque (torque) of the clutch can be adjusted by adjusting the angle of the helical teeth or the elastic force of the spring.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is a sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1

FIG. 5 is a schematic illustration of the disassembled structure of FIG. 1;

FIG. 6 is a schematic view of the positioning frame of FIG. 5;

FIG. 7 is a schematic view of the positioning notch of FIG. 6;

fig. 8 is a schematic diagram of a disassembled structure of the clutch of fig. 5.

Detailed Description

In order to make the technical solution of the present invention clearer, the following describes the present invention in detail with reference to fig. 1 to 8. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

The utility model relates to a constant temperature tap, including leading casing 00, cold water inlet port 01, hot water inlet port 02, cold and hot water mixing chamber 03 mixes water outlet 04, is equipped with temperature adjusting valve core 6 in the water inlet department of cold and hot water mixing chamber 03, the valve rod of temperature adjusting valve core 6 passes through the clutch and is connected with the 2 transmissions of motor.

Preferably, the clutch includes: the clutch device comprises a first clutch disk 3 fixedly connected to a rotating shaft of a motor 2 and a second clutch disk 4 connected to a valve rod in an axially sliding mode, wherein a spring 5 used for pushing the second clutch disk 4 to the first clutch disk 3 is arranged on the valve rod, inclined teeth are radially arranged on the end face of the first clutch disk 3 and the end face of the second clutch disk 4, the first clutch disk 3 and the second clutch disk 4 are meshed through the inclined teeth, when the torsion of the motor 2 is larger than the surface friction force meshed by the inclined teeth, the second clutch disk 4 overcomes the elastic force of the spring 5 to axially move away from the first clutch disk 3, and the clutch is disengaged. The valve rod is provided with a shaft notch surface 6-1, and the central hole of the second disc 4 of the clutch is provided with a circular notch surface matched with the shaft notch surface 6-1, so that the valve rod and the second disc 4 of the clutch rotate synchronously. The principle is basically the same as ZL200510040756.X, and is not described herein any more. The water temperature regulating valve core 6 can be the valve core disclosed in the invention patent or the water temperature regulating valve core 6 designed by the application, the water temperature regulating valve core 6 of the application comprises the valve rod and a hollow shaft body 6-3, the hollow shaft body 6-3 can be rotatably arranged in a valve core sleeve 06 of the faucet shell 00, the top of the valve core sleeve 06 is provided with a hot water square hole 3-1 communicated with a hot water channel 07 and a cold water square hole 3-2 communicated with a cold water channel 08 in parallel along the axial direction, the upper part of a cavity 6-4 of the hollow shaft body 6-3 is provided with a hot water square hole 2-1 corresponding to the hot water square hole 3-1 along the axial direction and a cold water square hole 2-2 corresponding to the cold water square hole 3-2 along the axial direction, the hot water square hole 2-1 and the cold water square hole 2-2 are arranged along the circumferential direction in a staggered manner, the right end of the chamber 6-4 is communicated with the cold and hot water mixing cavity 03. The square hole structure can realize linear and equal proportion increase or decrease of hot water and cold water entering the cavity through positive and negative rotation of the water temperature adjusting valve core, so that set water temperature can be accurately and quickly adjusted, and only hot water or only cold water can be adjusted.

As further optimization, two ends of the hollow shaft body 6-3 are provided with sealing rings 6-5. The end part of the tap shell 00 is fixedly provided with a positioning frame 9, the positioning frame 9 is provided with a through hole for penetrating through the valve rod, the upper part of the through hole is provided with a positioning notch 9-1, the valve rod is provided with a positioning pin 7 at the position corresponding to the positioning notch 9-1, when the water temperature adjusting shaft 6 rotates forwards and backwards, the positioning pin 7 swings in the positioning notch 9-1 in a reciprocating way, and the positioning notch 9-1 is used for limiting the rotation angle of the water temperature adjusting shaft 6. The lower part of the positioning frame 9 is provided with a support 9-2 for fixing the micro switch 8, the second disc 4 of the clutch is provided with a boss 4-1, and when the boss 4-1 touches the micro switch 8, the micro switch 8 sends an initial position electric signal to the electric control device when the water temperature adjusting shaft 6 is positioned.

Further preferably, the mixed water outlet 04 is provided with a water outlet valve 10, and a valve rod of the water outlet valve 10 is connected with a water outlet valve motor through a clutch. Speed reducers 1 are arranged among the motors 2, the water outlet valve motors and the corresponding valve rods.

Further optimization, pressure balance valves 09 are arranged between the hot water channel 07 and the hot water square hole 3-1 and between the cold water channel 08 and the cold water square hole 3-2, a mixed water impact block 05 is arranged in the cold and hot water mixing cavity 03, and the mixed water impact block 05 is opposite to the right end of the cavity 6-4, so that cold water and hot water flowing out of the right end of the cavity 6-4 are fully mixed when colliding with the mixed water impact block 05.

Claims

1. The utility model provides a thermostatic faucet, includes tap casing (00), cold water interface (01) of intaking, hot water interface (02) of intaking, hot and cold water mixing chamber (03), mixes water outlet (04), is equipped with temperature regulation case (6), its characterized in that in the water inlet department of hot and cold water mixing chamber (03): and a valve rod of the water temperature regulating valve core (6) is in transmission connection with the motor (2) through a clutch.

2. The thermostatic faucet of claim 1, wherein the clutch comprises: the clutch comprises a first clutch disc (3) fixedly connected to a rotating shaft of a motor (2), and a second clutch disc (4) connected to a valve rod in an axially sliding mode, wherein a spring (5) used for pushing the second clutch disc (4) to the first clutch disc (3) is arranged on the valve rod, inclined teeth are radially arranged on the end face of the first clutch disc (3) and the end face of the second clutch disc (4), the first clutch disc (3) and the second clutch disc (4) are meshed through the inclined teeth, when the torsion of the motor (2) is larger than the surface friction force meshed with the inclined teeth, the second clutch disc (4) overcomes the elastic force of the spring (5) and axially moves away from the first clutch disc (3), and the clutch is disengaged.

3. The thermostatic faucet according to claim 2, characterized in that the valve stem is provided with a shaft relief (6-1) and the central hole of the second disc (4) of the clutch is provided with a relief adapted to the shaft relief (6-1) so that the valve stem and the second disc (4) of the clutch rotate synchronously.

4. A thermostatic faucet according to any one of claims 1 to 3, wherein: a temperature sensor (11) is arranged in the cold and hot water mixing cavity (03), and the temperature sensor (11) and the motor (2) are electrically connected with an electric control device through corresponding leads.