CN2597747Y

CN2597747Y - Knocking-type electric wrench clutch

Info

Publication number: CN2597747Y
Application number: CNU032291647U
Authority: CN
Inventors: 邹家宏; 张亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-03
Filing date: 2003-03-03
Publication date: 2004-01-07
Anticipated expiration: 2013-03-03

Abstract

The utility model relates to a clutch for striking electric spanners. The utility model comprises a motor, a principal axis and a flying wheel and is characterized in that a motor is connected with a clutch inner plate which is provided with at least two pieces of guiding strips, guiding shoes are provided to cooperate with the guiding strips and are provided with slots, the slots are enchased on the guiding strips, a circular spring is enchased into a spring slot on each of the guiding shoe, the outer margin surfaces of the guiding shoes are provided with friction sheets, the clutch inner plate is arranged on the inner concave of a clutch outer disc, the protruding margin of the clutch outer disc matches with the frictions sheets on the guiding shoes, and the clutch outer disc is connected with the flying wheel. The utility model has the advantages of avoiding blocking of motors and further protecting the normal operations of the motors and other circuit components.

Description

The clutch of knocking type electric wrench

Technical field

The utility model relates to a kind of clutch, particularly a kind of clutch of knocking type electric wrench.

Background technique

At present in the vehicle maintenance maintenance, often use the knocking type electric wrench to turn bolt, but because the knocking type electric wrench utilizes flywheel to bring gathering strength of it with motor and discharges to main shaft, when being locking state by stubborn bolt, flywheel stall and cause motor generation stall produces the damage that big electric current causes motor and other component.

Summary of the invention

The purpose of this utility model is to solve to use the knocking type electric wrench to turn bolt in the prior art, but because the knocking type electric wrench utilizes flywheel to bring gathering strength of it with motor and discharges to main shaft, when being locking state by stubborn bolt, flywheel stall and cause motor generation stall produces the problem that big electric current causes the damage of motor and other component.The clutch of the utility model design knocking type electric wrench, comprise motor, main shaft, flywheel, it is characterized in that: motor is connected with clutch inner, at least two gib blocks are arranged on the inner disc, the slide block that cooperates with gib block is arranged, groove is arranged on the slide block, groove is nested on the gib block, have in the spring groove on the annular spring embedding slide block, on the outer ledge face of slide block friction plate is arranged, inner disc is positioned on the inner concave of clutch outer, and the raised brim of clutch outer cooperates with friction plate on the slide block, and clutch outer connects flywheel.The utility model has the advantages that to prevent motor rotation blockage the normal operation of protection motor and other component.

Description of drawings

Below in conjunction with drawings and Examples the utility model is elaborated,

Accompanying drawing 1 is a structural representation of the present utility model,

Accompanying drawing 2 be A of the present utility model to partial schematic diagram,

Embodiment

Comprise motor 1, main shaft 2, flywheel 3 among the figure, it is characterized in that: motor 1 is connected with clutch inner 4, at least two gib blocks 5 are arranged on the inner disc 4, the slide block 6 that cooperates with gib block 5 is arranged, groove 7 is arranged on the slide block 6, groove 7 is nested on the gib block 5, have in the spring groove 9 on an annular spring 8 embedding slide blocks 6, on the outer ledge face of slide block 6 friction plate 10 is arranged, inner disc 4 is positioned on the inner concave of clutch outer 11, the raised brim 12 of clutch outer 11 cooperates with friction plate 10 on the slide block 6, and clutch outer 11 connects flywheels 3.When motor 1 rotating speed reaches certain value, slide block 6 on the clutch inner 4 is subjected to action of centrifugal force, slide outward along gib block 5, when sliding force during greater than annular spring 8, the raised brim 12 of the friction plate 10 contact clutch outers 11 on the outer ledge face of slide block 6, clutch inner 4 contacts with clutch outer 11, clutch outer 11 also rotates thereupon, when flywheel 3 impacts main shaft 2, because of the stubborn power of bolt is bigger, flywheel 2 meeting moment stalls, this moment, clutch outer 11 meetings reduced the speed of passing on, after clutch inner 4 speed reduce, slide block 6 is subjected to action of centrifugal force to be reduced, and annular spring 8 will draw in the slide block 6, the raised brim 12 of the outer dish 11 of friction plate 10 disconnecting clutch on the outer ledge face of slide block 6, thereby motor 1 and main shaft 1 flywheel 3 are broken away from, can prevent the stall of motor 1.

Claims

1, the clutch of knocking type electric wrench, comprise motor, main shaft, flywheel, it is characterized in that: motor is connected with clutch inner, at least two gib blocks are arranged on the inner disc, the slide block that cooperates with gib block is arranged, groove is arranged on the slide block, groove is nested on the gib block, have in the spring groove on the annular spring embedding slide block, on the outer ledge face of slide block friction plate is arranged, inner disc is positioned on the inner concave of clutch outer, and the raised brim of clutch outer cooperates with friction plate on the slide block, and clutch outer connects flywheel.