Key type universal change-over switch

Abstract

The invention discloses a key type universal change-over switch, which comprises a switch main body and a key knob. The key knob comprises a sleeve, a lock cylinder and a coupler, a fool-proof structure is arranged at the joint of the switch main body and the key knob, and a positioning slot for insertion of an insertion part of the sleeve is formed in the switch main body; the fool-proof structure comprises a center insertion shaft arranged in the positioning insertion groove and a center insertion hole formed in the coupler and used for the center insertion shaft to be inserted, strip-shaped convex edges are formed on the periphery of the center insertion shaft, and strip-shaped grooves are formed in the inner wall of the center insertion hole; a locking buckle assembly is arranged on the switch body, the locking buckle assembly is mainly composed of a locking ring and a locking operation rod connected to the locking ring, a locking protruding block is arranged on the inner wall of the locking ring in a protruding mode, and a locking side groove for the locking protruding block to be embedded in is formed in the outer wall of the inserting part. The switch is reasonable and compact in structure, high in stability, convenient and fast to install, flexible, diversified and comprehensive in design, capable of meeting diversified requirements of customers, low in cost, high in use safety and long in service life.

Description

technical field [0001] The invention relates to the field of universal transfer switches, in particular to a key-type universal transfer switch. Background technique [0002] In the existing universal transfer switch products, there are the following deficiencies: [0003] (1) In the actual use of the handle-type universal switch, the manipulator is exposed on the outside of the instrument, and non-related professionals can touch and operate it, causing certain safety hazards. [0004] (2) Due to the limitations of the connection structure between the key button and the switch body, there is no instruction for installation, which is not only inconvenient to install, but also has low stability after installation; and it is easy to appear random installation between the key button and the switch body, thus damaging the product . [0005] (3) In the key button structure, the design of the key pull-out position is single, which cannot meet the different requirements of the cus...

AI Technical Summary

Problems solved by technology

[0003] (1) In the actual use of the handle-type universal switch, the manipulator is exposed on the appearance of the instrument, and non-related professionals can touch and operate it, causing certain safety hazards

[0004] (2) Due to the limitations of the connection structure between the key button and the switch body, there is no instruction for installation, which is not only inconvenient to install, but also has low stability after installation; and it is easy to appear random installation between the key button and the switch body, thus damaging the product

[0005] (3) In the key button structure, the design of the key pull-out position is single, which cannot meet the different requirements of the customer for the key pull-out position; moreover, when the customer has different requirements for the key pull-out position, it is necessary to open the mold many times to process the product. high cost

[0006] (4) The key socket of the key button is exposed, and dust, water vapor, foreign matter, etc. often enter, which has a great impact on the internal structure and affects product performance

[0007] (5) The metal lock cylinder and the plastic coupling are only connected by the square connecting shaft in the middle. After the force is applied, the transmission is performed only by the square connecting shaft. After a long time of use, the plastic coupling is prone to deformation at the joint As a result, a virtual position is generated, thereby affecting the transmission between the metal lock cylinder and the plastic coupling, and the transmission reliability is low

[0008] (6) The dustproof and waterproof performance of the key button is low, which affects product performance

[0009] (7) When the customer has different requirements for the shape and size of the front ring of the key button, the front ring needs to be redesigned and processed, but it cannot be connected with the sleeve

Images