CN201208725Y

CN201208725Y - Automatic diagonal wrench with wheel gear locking mechanism

Info

Publication number: CN201208725Y
Application number: CNU2008200315463U
Authority: CN
Inventors: 俞庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-03
Filing date: 2008-02-03
Publication date: 2009-03-18
Anticipated expiration: 2018-02-03

Abstract

The utility model discloses a hand tool, and particularly relates to an automatic monkey spanner, which is provided with a gear locking mechanism and can automatically adjust the jaw to a proper size by applying grip strength to a handle, thereby gripping a nut or a bolt and locking the jaw. The jaw part thereof comprises a spanner opening position block and a spanner opening movable block; a chute is formed in the spanner opening position block; a sliding block with a rack is arranged on the spanner opening movable block; the sliding block is mounted in the chute; and the sliding block rack is meshed with a sector gear capable of swinging back and forth along a stationary shaft thereof through a coaxial change-speed gear. A retractable moving grab handle is arranged outside a spanner handle; a pressing rod is arranged in the moving grab handle and hinged with the tail end of the sector gear through a connecting rod; a gear locking mechanism is arranged in the inner cavity of the spanner handle; the main body of the gear locking mechanism includes a rotatable rocker; and a component with teeth is mounted at the upper end of the rocker and can be meshed with a gearwheel and a fixed tooth surface at the same time. The utility model is convenient in use, and the jaw can be adjusted to grip the nut and lock the jaw through applying grip strength to the spanner handle.

Description

A kind of self-adjusting wrench with gear retaining mechanism

Technical field

The utility model relates to a kind of manual tool, relates to specifically a kind ofly can regulating jaw automatically to appropriate size by handle being applied grip, vises the adjustable wrench of nut or bolt and locked jaw

Background technology

In the prior art, regulate spanner, pipe wrench and clamp are by adopting manual size of regulating jaw, generally all adopt " heuristic ", promptly selecting wrong adjusting, and select repeatedly with the method that cooperates various workpiece.This method is except trouble, time-consuming and inaccurate outside, also require to use two hands, its jaw all needs alignment pieces, as leans against the place, dead angle and more can't accurately regulate, it is inconvenient more to use; And solid wrench (be commonly called as to stay and pull) is not though need to regulate the size of jaw, but can only be used for rotating the workpiece of same size, particularly use more frequent building trade when being built into the dismounting scaffold, problem is more outstanding, exists disadvantages such as operating rate is slow, efficient is low, jaw easily skids.

The utility model content

In order to address the above problem, the utility model provides a kind of only can adjust jaw to appropriate size by spanner handle being applied grip, vise nut or bolt and locked jaw adjustable wrench.

Technical solutions of the utility model are: a kind of self-adjusting wrench with gear retaining mechanism, form by two and half sheet elements up and down, comprise and pull mouthful fixed block and pull a mouthful movable block, pull in mouthful fixed block and have chute, pull the slide block that mouthful movable block is provided with the band tooth bar, slide block is installed in the described chute, between described chute bottom surface and the slide block spring is housed, the gear wheel engagement of slide block tooth bar and below; Described gear wheel side is fixed with a coaxial change-speed gearing that diameter is less, and this change-speed gearing and can mesh along the tooth fan that its fixed axis swings back and forth; The spanner handle outside is provided with telescopic movable lever, is provided with pressure rod and resetting-mechanism in the movable lever, and pressure rod one end is terminal hinged by connecting rod and described tooth fan, and the pressure rod other end is affixed by arch spring leaf and movable lever inwall.

In the such scheme, be provided with the gear retaining mechanism in the spanner handle inner chamber, its main body comprises a rocking bar that can rotate along self fixed axis, a band tooth member is equipped with in rocking bar upper end, and this band tooth member one end tooth face coincide with described gear wheel, and one fixedly the flank of tooth is identical in the flank of tooth of its other end and the spanner handle chamber, described band tooth member can be simultaneously and gear wheel, fixing flank engagement, gear wheel is locked locking, so slide block just is fixed also together with pulling a mouthful movable block, thereby realizes the purpose of locking jaw; Rocking bar is equipped with connecting rod between fixed axis and band tooth member, this connecting rod is located at and is with the telescopic touch pole of back-moving spring hinged in the spanner handle inwall through hole with one; An and inwardly protruding part corresponding with touch pole is arranged on movable lever inwall.

The utility model principle is that the jaw of this product is open, holds spanner handle during use under spring action, the stressed retraction of movable lever, and the arch spring leaf moves inward thereupon.Because the arch spring leaf is a hard spring, when jaw does not vise nut or bolt, the suffered resistance of pressure rod is less, the arch spring leaf can not be out of shape, pressure rod orders about the swing clockwise of tooth fan, by change-speed gearing and gear wheel transferring power, slide block is driven pull a mouthful movable block to move inward and close up jaw; When jaw has vised nut or bolt, can't drive pressure rod again, the suffered resistance of pressure rod increases until the elastic force that surpasses the arch spring leaf; So arch spring leaf stress deformation, movable lever continues retraction, bossing moves and withstands thereupon touch pole on the movable handle, the rocking bar that touch pole is moved inward and order about the gear retaining mechanism moves to the gear wheel direction, finally making in band tooth member and gear wheel and the spanner chamber fixedly, the flank of tooth meshes simultaneously, gear wheel is locked locking, thereby locked pull a mouthful movable block, realized driving to finish regulating jaw and vising nut or bolt and two processes of locking jaw with grip.

The beneficial effects of the utility model are: rational in infrastructure, easy to use, and only by spanner handle being applied certain grip, once can adjust jaw and vise nut or bolt and lock jaw, compare with existing self-adjusting wrench, can significantly increase work efficiency.

Description of drawings:

The utility model is described in further detail below in conjunction with the drawings and specific embodiments:

Fig. 1 is a structural representation of the present utility model.

The specific embodiment:

Referring to Fig. 1, a kind of self-adjusting wrench with gear retaining mechanism is to be put together by two and half sheet elements up and down, and connects with screw.Its associated jaw portion is similar to existing adjustable wrench, comprise and pull mouthful fixed block 1 and pull mouthful movable block 2, pull in mouthful fixed block 1 and have chute, pull the slide block that mouthful movable block 2 is provided with the band tooth bar, slide block is installed in the described chute, spring 4 is housed between described chute bottom surface and the slide block, and slide block tooth bar 3 meshes with the gear wheel 5 of below; Described gear wheel 5 sides are fixed with a coaxial change-speed gearing 17 that diameter is less, and this change-speed gearing 17 and one are arranged in the spanner handle inner chamber, tooth fan 6 engagements that can swing back and forth along its fixed axis; The spanner handle outside is provided with telescopic movable lever 9, is provided with pressure rod 7 and back-moving spring 10 in the movable lever 9, and pressure rod 7 one ends are terminal hinged by connecting rod 11 and described tooth fan 6, and pressure rod 7 other ends are affixed by arch spring leaf 8 and movable lever 9 inwalls.Be provided with the gear retaining mechanism in the spanner handle inner chamber, its main body comprises a rocking bar 14 that can rotate along self fixed axis, a band tooth member 18 is equipped with in rocking bar 14 upper ends, these band tooth member 18 1 end tooth faces and described gear wheel 5 coincide, in the flank of tooth of its other end and the spanner handle chamber one fixedly the flank of tooth 16 coincide, described band tooth member 18 can be simultaneously and gear wheel 5, the fixedly flank of tooth 16 engagements, thereby gear wheel 5 is locked lockings, slide block is fixed together with pulling mouthful movable block 2, thus the purpose of realization locking jaw; Rocking bar 14 is equipped with connecting rod 19 between fixed axis and band tooth member 18, this connecting rod 19 is located at and is with the telescopic touch pole of back-moving spring 15 hinged in the spanner handle inwall through hole with one; An inwardly protruding part 12 corresponding with touch pole 15 is arranged on movable lever 9 inwalls.

The jaw of this product is open under spring 4 effects, holds spanner handle during use, movable lever 9 stressed retractions, and arch spring leaf 8 moves inward thereupon.Because arch spring leaf 8 is hard springs, when jaw does not vise nut or bolt, pressure rod 7 suffered resistances are less, arch spring leaf 8 can not be out of shape, pressure rod 7 orders about tooth fan 6 swing clockwise, by change-speed gearing 17 and gear wheel 5 transferring power, slide block 3 is driven pull mouthful movable block 2 to move inward and close up jaw; When jaw has vised nut or bolt, the driving gear fan 6 again, therefore pressure rod 7 suffered resistances increase until the elastic force that surpasses arch spring leaf 8, so the arch spring leaf is compressed distortion, movable lever 9 continues retraction, movable lever lug boss 12 moves and withstands thereupon touch pole 15, the rocking bar that makes touch pole 15 move inward and order about the gear retaining mechanism moves to gear wheel 5 directions, finally making in band tooth member 18 and gear wheel 5 and the spanner chamber fixedly, the flank of tooth 16 meshes simultaneously, with gear wheel 5 locking lockings, thus the locked mouthful movable block of pulling.After fulfiling assignment, only need unclamp spanner handle, movable lever 9 is got back to original position under the effect of back-moving spring 10, and touch pole 15 is also upspring under the effect of back-moving spring and got back to original position.

Claims

1. self-adjusting wrench with gear retaining mechanism, form by two and half sheet elements up and down, its associated jaw portion comprises pulls mouthful fixed block and pulls a mouthful movable block, pull in mouthful fixed block and have chute, pull the slide block that mouthful movable block is provided with the band tooth bar, slide block is installed in the described chute, between chute bottom surface and the slide block spring is housed, the gear wheel engagement of slide block tooth bar and below; Described gear wheel side is fixed with a coaxial change-speed gearing that diameter is less, and this change-speed gearing and can mesh along the tooth fan that its fixed axis swings back and forth; The spanner handle outside is provided with telescopic movable lever, is provided with pressure rod and resetting-mechanism in the movable lever, and pressure rod one end is terminal hinged by connecting rod and described tooth fan, and the pressure rod other end is affixed by arch spring leaf and movable lever inwall; It is characterized in that being provided with the gear retaining mechanism in the described spanner handle inner chamber, its main body comprises a rocking bar that can rotate along self fixed axis, a band tooth member is equipped with in the rocking bar upper end, this band tooth member one end tooth face and described gear wheel coincide, in the other end flank of tooth and the spanner handle chamber one fixedly the flank of tooth coincide, described band tooth member can be simultaneously and gear wheel, fixing flank engagement; Rocking bar is equipped with connecting rod between fixed axis and band tooth member, this connecting rod is located at and is with the telescopic touch pole of back-moving spring hinged in the spanner handle inwall through hole with one; An and inwardly protruding part corresponding with touch pole is arranged on movable lever inwall.