CN200963797Y

CN200963797Y - Ratchet wheel adjustable wrench

Info

Publication number: CN200963797Y
Application number: CN 200620126490
Authority: CN
Inventors: 牟群芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-18
Filing date: 2006-10-18
Publication date: 2007-10-24
Anticipated expiration: 2016-10-18

Abstract

The utility model provides a ratchet wheel adjustable wrench which can be wrung repeatedly and can fit various bizarre deformed nuts with reducible reverse angle. Two arc-shaped flutes are respectively arranged on the plane working nip of a wrench fixed claw and on the plane working nip of an active claw at the head of the adjustable wrench at the opening of the wrench, the two claws are respectively arranged a wedge block structure provided with a wedged guiding column. The wrench reverses the original position through the flexible wedged guiding column in the arc-shaped flute and the wedge block structure, the reverse angle is reduced to fit for various bizarre deformed nuts and enlarge the application scope. Therefore the practicality function of the common adjustable wrench can be extremely extended.

Description

The ratchet adjustable wrench

Technical field

The utility model belongs to the hand-held tool of securing members such as a kind of quick connection demounting bolt nut, a kind of ratchet adjustable wrench that ratcher function is arranged of more specifically saying so.

Background technology

At present, there is following drawback in the widely used common adjustable wrench of mechanical industry: whenever screw and once all must withdraw from down side, inefficiency; The A/F instability is easily twisted bald nut, the easy slippage of old bald nut, and spanner is poor for applicability; The restriction of falling the square degree 60 degree, narrow location operation inconvenience.

The utility model content

The purpose of this utility model provides a kind of new mechanism of ratchet adjustable wrench, and the ratchet adjustable wrench that this mechanism makes has repeatedly sour jujube to twist to have ratcher function, can dwindle down square degree, can adapt to the characteristics that various special-shaped ` are out of shape nuts.

The purpose of this utility model is achieved in that

As figure (1),,, on the body of fixed claw 3 and movable claw 10, be shaped on a cotter mechanism respectively as figure (2) just as being shaped on an arc groove C and F respectively in the fixed claw 3 of opening adjustable wrench 1 and the plane work jaw of movable claw 10.Cotter mechanism on the spanner fixed claw 3 is by placing claw that the wedge shape guide pillar 5 that one slot V and working flank D are housed in the vestibule A of one stage E is arranged, and return spring 4 and the shop bolt 2 that is installed on the body constitute.Cotter mechanism on the spanner movable claw 10 is by placing the wedge shape guide pillar 6 that a slot N and work toothed surface H are housed in the claw vestibule B, and return spring 7 and the compressing tablet 8 and the screw 9 that are installed on the body constitute.

As figure (3), the cotter mechanism on the spanner fixed claw 3 also can be made into: place the wedge shape guide pillar 11 that a keyway M and working flank D are housed in the vestibule K of fixed claw 3 no stage E, shop bolt 2 formations on return spring 4 and the body.

As figure (4), just as on a fixed claw (3) of opening adjustable wrench (1), being shaped on telescopic cotter mechanism.

As figure (5), just as on a movable claw (10) of opening adjustable wrench (1), being shaped on telescopic cotter mechanism.

The utility model has following major advantage and utility function:

1. but the opening sour jujube twists, high efficiency

The positive and negative moment relation that takes place when the utility model utilizes spanner to work with nut, the geometrical clamp face that back, former opening adjustable wrench two pawls location is formed is converted to the live splint face.(as Fig. 6) has the wedge shape guide pillar of certain work profile of tooth to stretch out vestibule and wedge clamping nut in the real space of deep-slotted chip breaker and target by the spring recuperability when spanner bears the precession of forward force couple role clamping nut, and the counter-force of (as Fig. 7) target overcomes the utility function that the spring recuperability promotes to realize in the wedge shape guide pillar withdrawal vestibule spanner original position side efficient operation when spanner bears reverse force couple role.

2, but automatic fine tuning, and utility function is complete

The utility model is owing to there is movable wedge grip face, then adjust not in place or the relatively moving along with the wedge shape guide pillar when displacement taking place changing of worm gear at adjustable wrench, the spacing defection of wedge grip face changes, make it to adapt at any time bolt, the nut dimensional requirement, again since when spanner applies locking torque and pulls body two pawl jaws and produce the resilient expansion distortion wedge grip face of activity can relatively move and realize that the gap compensates, thereby the reliable clamping of retention nut, can not twist bald nut and can be applicable to old bald nut, like circular pipe fitting, also the profile of target can unrestrictedly be used.

3, the working flank that has several profiles of tooth to constitute on the inclined-plane of wedge shape guide pillar of the present utility model utilizes the mutual classification engagement of between cog to dwindle down square degree greatly, is convenient to the narrow location operation.

Description of drawings

Fig. 1 is an overall structure schematic diagram of the present utility model:

Fig. 2 is a head construction schematic diagram of the present utility model:

Fig. 3 is the structural representation that fixed claw does not have the step vestibule;

Fig. 4 is the utility model list fixed claw structural representation:

Fig. 5 is the utility model list movable claw structural representation

Fig. 6 is a clamping nut working state schematic representation:

Fig. 7 be backhaul when side view:

The specific embodiment

As figure (1); The ratchet adjustable wrench is shaped on a cotter mechanism just as being shaped on an arc groove C and F respectively in the fixed claw 3 of opening adjustable wrench 1 and the plane work jaw of movable claw 10 respectively as figure (2) on the body of fixed claw 3 and movable claw 10.Cotter mechanism on the spanner fixed claw 3 is by placing claw that the wedge shape guide pillar 5 that one slot V and working flank D are housed in the vestibule A of one stage E is arranged, and return spring 4 and the shop bolt 2 that is installed on the body constitute.Cotter mechanism on the spanner movable claw 10 is by placing the wedge shape guide pillar 6 that a slot N and working flank H are housed in the claw vestibule B, return spring 7, and the compressing tablet 8 and the screw 9 that are installed on the body constitute.

As figure (3), the cotter mechanism on the ratchet adjustable wrench fixed claw 3 also can be made into: by placing claw not have the wedge shape guide pillar 11 that a keyway M and working flank H are housed in the vestibule K of stage E, return spring 4 and the shop bolt 2 that is installed on the body constitute.

As figure (4), just as on a fixed claw (3) of opening adjustable wrench (1), be shaped on as figure (2) or figure (3) telescopic cotter mechanism.

As figure (5), just as on a movable claw (10) of opening adjustable wrench (1), be shaped on as figure (2) telescopic cotter mechanism.

Mainly Figure 7 shows that example below, narrate use of the present utility model with Fig. 6: when using the work of the utility model ratchet adjustable wrench, (as Fig. 6) with ratchet adjustable wrench movable claw adjust to need the position after, insert corresponding nut between arc groove.Rotating ratchet adjustable wrench handle then, its turning moment screws nut by two wedge shape guide pillars.When (as Fig. 7) backhaul is square, reverse turn ratchet adjustable wrench handle, then the reverse couple of nut promotes the wedge shape guide pillar, and the corresponding return spring of wedge shape guide pillar compression, the vestibule of withdrawing, nut realize that in arc groove original position is square.

Claims

1. a ratchet adjustable wrench is characterized in that being shaped on an arc groove (C) and (F) respectively just as the plane work jaw in the fixed claw (3) of opening adjustable wrench (1) and movable claw (10), on the body of fixed claw (3) and movable claw (10), be shaped on a telescopic cotter mechanism respectively, cotter mechanism on the spanner fixed claw (3) is by placing claw that the wedge shape guide pillar (4) that one slot (V) and working flank (D) are housed in the vestibule (A) of one stage E is arranged, return spring (5), constitute with the shop bolt (2) that is installed on the body, spanner movable claw (10) cotter mechanism is by placing the wedge shape guide pillar (6) that a slot (N) and work toothed surface H are housed in the claw vestibule (B), return spring (7) and the compressing tablet (8) and the screw (9) that are installed on the body constitute.

2. its feature of ratchet adjustable wrench according to claim 1 also is also can be made into just as the cotter mechanism on opening adjustable wrench fixed claw (3) by placing claw not have the wedge shape guide pillar (11) that a keyway (M) and working flank (D) are housed in the vestibule (K) of stage (E), return spring (4) and the shop bolt (2) that is installed on the body constitute.

3. its feature of ratchet adjustable wrench according to claim 1 also is just as be shaped on telescopic cotter mechanism on one of them pawl of the fixed claw (3) of opening adjustable wrench (1) and movable claw (10).