CN201645375U

CN201645375U - Ratchet wrench

Info

Publication number: CN201645375U
Application number: CN2010201728672U
Authority: CN
Inventors: 忻明良
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-23
Filing date: 2010-04-23
Publication date: 2010-11-24
Anticipated expiration: 2020-04-23

Abstract

The utility model discloses a ratchet wrench which has higher assembling efficiency and lower production cost in the premise of retaining the advantages of simple structure, flexible operation, reverse idle rotation and positive rotation without disengagement. The ratchet wrench comprises a handle and a cutter rod, wherein the interior of the handle is provided with a hollow cavity; the inner wall of the handle column which is inserted on the handle is provided with two clamp grooves; teeth are respectively elastically clamped and inserted in the two clamp grooves; ratchets provided with the cutter rod can be sleeved in the hole of the handle column in a relative rotation way, and one end of the ratchets, which is away from the cutter rod, is provided with a clamping spring groove; the clamping spring groove is clamped with a clamping spring on the handle column so that the ratchets and the handle column can be axially limited; the clamping teeth on the outer edge of the ratchet is engaged with the teeth; a reversing ring is sleeved on the periphery of the handle column; the interior of the reversing ring is provided with two protrusions; and the two teeth are respectively butted with the two protrusions.

Description

Ratchet spanner

Technical field

The utility model relates to a kind of hand-operated tools fastening, that connect or dismantle that is used for, and specifically is that a kind of armrest handle rotates the ratchet spanner of handling.

Background technology

The applicant's patent formerly " ZL 200420082398.X " discloses a kind of ratchet spanner, it comprises handle, knife bar, the cavity that one hollow is arranged in the handle, be plugged on the handle post outer peripheral face on the handle and offer two draw-in grooves, teeth elasticity card respectively are inserted in above-mentioned two draw-in grooves, the relatively turnable handle post periphery bottom that is sleeved on of tooth papillae of knife bar is housed, the inner edge latch of tooth papillae and teeth engagement, handle post periphery top is set with a commutation circle, alternately on the inner edge side face of this commutation circle offer two teeth locating slots, one of them teeth that is contained on the handle post enter in the corresponding locating slot, when handle rotates, enter teeth and the engagement of the tooth on the tooth papillae in the locating slot, thereby transmission torsion, and do not enter teeth in the locating slot, then not with tooth papillae on the tooth engagement, thereby knife bar can oppositely be dallied and be rotated in the forward.

Though that the said structure ratchet spanner has is simple in structure, flexible operation, can oppositely dally not to break away from the advantage of forward rotation once more, but need to use screw to be connected between tooth papillae and the handle post and carry out axial limiting, make the assembling of producing described ratchet spanner bother, efficiency of assembling is lower, production cost is higher.

The utility model content

The technical problems to be solved in the utility model is, provides a kind of at the ratchet spanner that keeps that original structure is simple, significantly improves self efficiency of assembling under the flexible operation, the prerequisite that must not break away from once more the advantage of forward rotation that can oppositely dally, reduces production costs.

The technical solution of the utility model is, the utility model ratchet spanner, it comprises handle, knife bar, the cavity that one hollow is arranged in the handle, be plugged on and offer two draw-in grooves on the handle column wall on the handle, teeth elasticity card respectively are inserted in above-mentioned two draw-in grooves, the tooth papillae that knife bar is housed is connected with the relatively turnable fit in the hole of handle post, and on the end away from knife bar of tooth papillae the jump ring groove is set, this jump ring groove and be installed in jump ring clamping on the handle post so that axial limiting between tooth papillae and the handle post, the outer rim latch of tooth papillae and teeth engagement are set with a commutation circle on the handle post periphery, the inside of described commutation circle is provided with two projectioies, and two teeth offset with two projectioies separately.

After adopting said structure, the utility model compared with prior art, have the following advantages: operation principle of the present utility model is, teeth can be under the drive of handle post forward promote the outer rim latch of tooth papillae so that tooth papillae and handle post forward rotate synchronously, simultaneously, tooth papillae drives the knife bar forward rotation, at this moment, the reverse rotation of handle post, tooth papillae is just motionless, the handle post is idle running oppositely, and another teeth can oppositely promote the outer rim latch of tooth papillae under the drive of handle post, so that tooth papillae and the rotation of handle post reverse sync, simultaneously, tooth papillae drives the knife bar backward rotation, at this moment, when the handle post was rotated in the forward, tooth papillae was just motionless, the handle post can dally by forward, when commutation circle during for the centre position, two teeth all mesh with the outer rim latch of tooth papillae, and the handle post can not dally.

See also the Fig. 4 in the specific embodiment, when the teeth of being blocked by tooth papillae among the figure by commutated the circle projection push up back after, the teeth of being blocked by tooth papillae and the outer rim latch engagement of tooth papillae are only arranged not, the handle post just can drive tooth papillae and turn clockwise, and self can dally counterclockwise, the reason of idle running is counterclockwise, when the handle post rotates counterclockwise, the outer rim latch of tooth papillae will back down teeth, these teeth are return to the draw-in groove that it is installed, so just realized counterclockwise idle running, and the handle post is when clockwise rotating, because of teeth elasticity card is inserted in the draw-in groove, the outer rim latch that makes these teeth and tooth papillae keeps engagement so these teeth can automatically reset, the outer rim latch of tooth papillae will prop up teeth, physics law according to interaction force, at this moment, teeth will promote tooth papillae and turn clockwise, the handle post just can drive tooth papillae and turn clockwise, and when the teeth of not blocked by tooth papillae among the figure are commutated after the projection of circle push up back, only has the outer rim latch of the teeth of being blocked by tooth papillae and tooth papillae to mesh, tooth papillae just can drive tooth papillae and be rotated counterclockwise, and self can dally clockwise, and principle is the same, does not add and gives unnecessary details.

Because the axial limiting between tooth papillae and the handle post adopts jump ring, saved original screw, so can improve greatly the efficiency of assembling of ratchet spanner, production cost reduces.

Comprehensively above-mentioned, outer rim latch and the teeth of the disclosed technical scheme of the utility model by tooth papillae mesh and realize that reverse idle running must not break away from the function of forward rotation once more, total structure is still simple, flexible operation, and efficiency of assembling can improve greatly, and production cost reduces.

Description of drawings

Fig. 1 is the cutaway view of the utility model ratchet spanner.

Fig. 2 is the explosive view of the utility model ratchet spanner.

Fig. 3 is the partial exploded view of the utility model ratchet spanner.

Fig. 4 is the structural representation of above-mentioned Fig. 3 after assembling.

Fig. 5 is the structural representation of commutation circle.

Shown in the figure, 1, turncap, 2, handle, 3, the handle post, 4, spring, 5, teeth, 6, tooth papillae, 7, commutation circle, 8, jump ring, 9, ring-like protrusion, 10, steel ball, 11, projection, 12, steel ball locating slot, 13, magnet steel, 14, limit the jump ring of magnet steel, 15, knife bar, 16, the jump ring groove.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying

drawing

1,2,3,4,5.

The utility model ratchet spanner, it comprises handle 2, knife bar 15, the cavity that one hollow is arranged in the handle 2, be plugged on handle post 3 inwalls on the handle 2 and offer two draw-in grooves, teeth 5 elasticity card respectively are inserted in above-mentioned two draw-in grooves, the tooth papillae 6 that knife bar 15 is housed is connected with the relatively turnable fit in the hole of handle post 3, and on the end away from knife bar 15 of tooth papillae 6 jump ring groove 16 is set, this jump ring groove 16 and be installed in jump ring 8 clampings on the handle post 3 so that axial limiting between tooth papillae 6 and the handle post 3, the outer rim latch of tooth papillae 6 and teeth 5 engagements, be set with a commutation circle 7 on handle post 3 peripheries, this commutation circle 7 is defined between the bottom of the ring-like protrusion 9 of tooth papillae 6 and handle 2, the inside of described commutation circle 7 is provided with two projectioies, 11, two teeth 5 and offsets with two projectioies 11 separately.

Handle 2 is stamped turncap 1, drops out to prevent the cutter that is positioned over handle 2 inside.

Described two draw-in grooves are the eccentric draw-in groove that is parallel to each other.

Described commutation is enclosed and is offered steel ball locating slot 12 on 7 inner peripheral surfaces, the steel ball 10 that is contained in the handle post 3 outer peripheral face radial holes is conflicted with this locating slot elasticity, 7 rotations of commutation circle, the steel ball 10 and the forward and backward seam of steel ball locating slot 12 are offseted, one of them default teeth 5 are pushed up back by

projection

11,5 outer rim latches with tooth papillae 6 of another teeth keep engagement, rotate on demand with control handle post 3.

Offer a breach of placing spring 4 on the described teeth 5 respectively.

Magnet steel 13 is housed at the bottom of the centre bore of described tooth papillae 6, and magnet steel 13 is fixed at the bottom of the centre bore of tooth papillae 6 by knife bar 14 in, knife bar 15 is plugged in this centre bore.

Claims

1. ratchet spanner, it comprises handle (2), knife bar (15), the cavity that one hollow is arranged in the handle (2), it is characterized in that, be plugged on handle post (3) inwall on the handle (2) and offer two draw-in grooves, teeth (5) elasticity card respectively are inserted in above-mentioned two draw-in grooves, the tooth papillae (6) that knife bar (15) are housed is connected with the relatively turnable fit in hole of handle post (3), and on the end away from knife bar (15) of tooth papillae (6) jump ring groove (16) is set, this jump ring groove (16) and be installed in jump ring (8) clamping on the handle post (3) so that axial limiting between tooth papillae (6) and the handle post (3), the outer rim latch of tooth papillae (6) and teeth (5) engagement, be set with a commutation circle (7) on handle post (3) periphery, the inside of described commutation circle (7) is provided with two projectioies (11), and two teeth (5) offset with two projectioies (11) separately.

2. ratchet spanner according to claim 1 is characterized in that, offers steel ball locating slot (12) on described commutation circle (7) inner peripheral surface, and the steel ball (10) that is contained in handle post (3) the outer peripheral face radial hole is conflicted with this locating slot elasticity.

3. ratchet spanner according to claim 1 is characterized in that, offers a breach of placing spring (4) on the described teeth (5) respectively.