Thread transmission mechanism and electric valve containing thread transmission mechanism

A thread transmission and electric valve technology, applied in the direction of engine components, lift valves, valve details, etc., can solve the problems of difficult assembly and low thread accuracy, achieve stable rotation, ensure position accuracy and strength, and avoid excessive contact length Effect

Pending Publication Date: 2020-04-17
浙江中宝自控元件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of difficult assembly and low thread precision existing in the existing electric valve thread transmi

Method used

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  • Thread transmission mechanism and electric valve containing thread transmission mechanism
  • Thread transmission mechanism and electric valve containing thread transmission mechanism
  • Thread transmission mechanism and electric valve containing thread transmission mechanism

Examples

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Example Embodiment

[0022] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Such as Figure 1-Figure 4 As shown, the threaded transmission mechanism of the electric valve of the present invention includes an internal threaded component 1 and an external threaded component. The external threaded component and the internal threaded component are connected by threaded matching transmission. The external threaded component includes an external threaded component 2 and a mounting seat 3, and an external threaded component 2 It includes a stepped semi-cylindrical base 15 and an externally threaded rod 16. The externally threaded rod 16 is fixedly connected to the bottom of the base. The mounting seat 3 and the base 15 are in a stepped semi-cylindrical shape that cooperates with each other; the lower part of the mounting seat 3 and the base 15 cooperate to form The motor rotor 7 of the electric valve is connected to th...

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Abstract

The invention discloses a thread transmission mechanism and an electric valve containing the thread transmission mechanism. An externally threaded component of the electric valve includes an externally threaded part and a mounting seat, the externally threaded part includes a stepped semi-cylindrical base and an externally threaded rod, the externally threaded rod is fixedly connected with the bottom of the base, the mounting seat and the base are in a stepped semi-cylindrical shape which is matched with each other; the mounting seat and the lower section of the base are matched to form a transmission part which is connected to a rotor of the electric valve, a semi-cylindrical part integrally formed with the externally threaded rod is formed on an axial plane part of the base, and a semi-circular groove matched with the semi-cylindrical part is formed on the mounting seat. The semi-cylindrical part is arranged and formed on the externally threaded part, the length of the semi-cylindrical part is controlled to be close to the length of an external thread, and position accuracy and strength of thread injection can be ensured. In addition, semi-cylindrical bosses and semi-cylindricalgrooves which are convex and concave fitted in the axial direction are formed on the mounting base and the externally threaded part, and coaxiality of the mounting of the externally threaded part anda threaded seat can be ensured.

Description

technical field [0001] The invention belongs to the technical field of refrigeration electric valves, in particular to a screw drive mechanism and an electric valve including the mechanism. Background technique [0002] The electric valve is mainly used in the refrigeration or heating system. By changing the flow area of ​​the valve port of the electric valve, it is linked with the frequency conversion compressor in the system to control the refrigerant pressure of the refrigeration or heating system. Existing electric valves are usually driven by stepping motors, and the threaded mechanism converts the rotational motion of the motor into linear motion, so that the tapered valve core elastically connected with the thread approaches or moves away from the valve port. In order to ensure the flow adjustment accuracy of the electric valve and the stability of the electric valve, the manufacturing accuracy of the thread structure is very critical, especially after the thread stru...

Claims

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Application Information

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IPC IPC(8): F16K1/02F16K1/32F16K27/02F16K31/04F16K31/50
CPCF16K1/02F16K1/32F16K27/02F16K31/047F16K31/50
Inventor 王林炜
Owner 浙江中宝自控元件有限公司
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