CN2796966Y

CN2796966Y - Hand tools with joint locking mechanism

Info

Publication number: CN2796966Y
Application number: CNU2004200927936U
Authority: CN
Inventors: 林育成
Original assignee: Lea Way Hand Tool Corp
Current assignee: Apex Tool HK Ltd Taiwan Branch
Priority date: 2004-09-20
Filing date: 2004-09-20
Publication date: 2006-07-19
Anticipated expiration: 2014-09-20
Also published as: EP1637286A1; ATE380630T1; DE602005003735T2; EP1637286B1; DE602005003735D1

Abstract

A hand tool with joint locking mechanism features that a head at its back end is pivoted to a handle at its front end, and the joint locking mechanism is arranged between the front end of handle and the back end of head and has the first scarf joint unit, the second scarf joint unit, a pull button unit and the first elastic unit. The first scarf joint device is arranged at the rear end of the head, the front end of the handle is provided with a first hole which extends along the length direction of the handle approximately so as to accommodate the second scarf joint device, and the handle is further provided with a second hole which is vertical to the first hole and is communicated with the first hole so as to accommodate the pull button device. The pull button device is provided with a pull button part and a fixing part arranged below the pull button part, and the fixing part extends from the second hole and is combined with the second scarf joint device. The first elastic device is arranged in the first hole and provides forward jacking force for the second scarf joint device, so that the front end of the second scarf joint device is mutually scarf-jointed and positioned with the first scarf joint device.

Description

Hand-held tool with articulation locking mechanism

Technical field

The utility model relates to a kind of hand-held tool with articulation locking mechanism, and particularly a kind of have head angle adjustment function and locate more convenient and firm hand-held tool.

Background technology

Tool assembly commonly used with articulation mechanism, TaiWan, China the 421111st and wait for No. 488349 and announce the patent case for example, it mainly comprises a spanner portion and a shank part, a protruding end of spanner portion can utilize a screw to be pivotally attached to a female ends of shank part.The some of outside, protruding end is provided with tooth portion, with one be arranged at that the steel ball in the cinclides intermeshes in the female ends.Other places between spanner portion and the shank part product of pulling, the one end is provided with a caulking groove portion, can be cross-placed on the abutting end inner edge of shank part, the product other end of pulling is provided with a curved tooth portion, can be when the product of pulling slides into the precalculated position, form engagement with another partly set blocking part of outside, spanner portion protruding end, mat makes the movable jaw spanner reach fixed angle, makes the adjustment of movable jaw spanner angle more convenient and firm with the location.Yet the steel ball of this kind spanner is rounded, and can't reach firm engagement with the tooth portion of protruding end, and the blocking part of the curved tooth portion of its product of pulling and spanner portion protruding end, simultaneously also as the tooth portion of steel ball and protruding end, cause wearing and tearing because of long-term use most probably, thereby form use inconvenience and reduction hand-held tool life-span.

And for example TaiWan, China is announced the patent case No. 478444, and its center in the handle body is provided with a perforation, is provided with internal thread in its bottom, to hold a trace and to be screwed into, leader's build-in trace and can rotating synchronously with trace, the groove cover for seat on handle body top is gone into head, is locked by bolt.Ccontaining one supports only seat in the perforation of handle body, and the one end is connected to the top of trace, and its other end is established a concave-arc part.A ccontaining worm screw in the groove seat of handle body, the end bar of its end stretches out outside a brood of hole, and other is provided with an annular groove, to embed the clasp location, makes the rotating free degree of worm screw tool.The extension end of head is made as worm gear, and with the screw engages interlock, other end build-in one flexible handle of screw rod is able to rotary expansion, the interlock worm and wheel, thereby it is arbitrarily angled that head is swung.Yet this kind mechanism also most probably because long-term the use, and makes the odontotripsis of worm gear and screw rod, and causes inner becoming flexible and can't strong fix.In addition, also most probably because of clasp, trace, support and end the loosening mutually of seat or the arbitrary element of flexible handle and can't use.

Given this, provide a kind of hand-held tool with articulation locking mechanism, it has convenient and firm angle adjustment and location, uses and improves aforementioned numerous shortcomings, just becomes the anxious problem for breaking through again for the treatment of of an industry for this reason.

The utility model content

Main purpose of the present utility model provides a kind of hand-held tool with articulation locking mechanism, and has convenient and firm head angle adjustment and positioning function.

For reaching above-mentioned purpose, the utility model provides a kind of hand-held tool with articulation locking mechanism, it is characterized in that this articulation locking mechanism is to be located between the rear end of the front end of hand-held tool shank and hand-held tool head, and this articulation locking mechanism comprises one first scarfing device, one second scarfing device, a pull-button device and one first elastic device.This first scarfing device is located at the rear end of hand-held tool head, and be provided with one roughly along first hole that this shank length direction extends in the front end of shank, to hold this second scarfing device, shank is established second hole vertical with this first hole and that be communicated with this first hole in addition, to hold this pull-button device.This pull-button device has the fixed part that a pull-button portion and is located at this pull-button subordinate side, and this fixed part is to extend in this second hole and combine with this second scarfing device.This first elastic device is located in this first hole, and this second scarfing device one jacking force forwards is provided, and makes the front end of this second scarfing device and this first scarfing device rabbet the location mutually.

For making the those skilled in the art more understand technical characterstic of the present utility model; and can implement according to this; now cooperate graphic explaining detailedly with following embodiment; just its narration only is in order to narrate preferred embodiment of the present utility model; but not the utility model is done any type of restriction; every any modification or change of being done under identical creation spirit all should belong to the scope that the utility model is protected.

Description of drawings

Fig. 1 is for showing the perspective exploded view with hand-held tool of an articulation locking mechanism of the present utility model;

Fig. 2 is for showing the local plane that amplifies of hand-held tool;

Fig. 3 is the profile of Fig. 2 along the A-A line, and wherein pull-button is to be locking-in state;

Fig. 4 is the profile of Fig. 2 along the A-A line, and wherein pull-button is to be released state;

Fig. 5 is for showing the local side view that amplifies of hand-held tool;

Fig. 6 is the profile of Fig. 5 along the B-B line, and wherein pull-button is to be locking-in state;

Fig. 7 is the profile of Fig. 5 along the B-B line, and wherein pull-button is to be released state;

Fig. 8 is the profile of Fig. 2 along the A-A line, and wherein head is that relative shank is 0 ° of inclination;

Fig. 9 is the profile of Fig. 2 along the A-A line, and wherein head is that relative shank is 11.25 ° of inclinations;

Figure 10 is the profile of Fig. 2 along the A-A line, and wherein head is that relative shank is 25 ° of inclinations;

Figure 11 is for showing the rotation schematic diagram of shank; With

Figure 12 is for showing another design of pull-button device.

The specific embodiment

Fig. 1 shows the perspective exploded view with hand-held tool of an articulation locking mechanism of the present utility model.Spanner 10 mainly comprises a head 20, a shank 30 and an articulation locking mechanism 40.The rear end of head 20 has a protuberance 21, is provided with a perforation 22 in it, and the front end of shank 30 has a depressed part 31, and it is provided with two perforations 32, and wherein a perforation 32 is provided with internal thread, cooperating a screw 24, and head 20 is pivotally attached to shank 30.About the details of screw 24 and two perforations 32, can not give unnecessary details at this with reference to No. 566274 bulletin of TaiWan, China patent.Other has one first hole 33 to be located at the front end of shank 30, and roughly extends along this shank 30 length directions, and one second hole 34 is one sides of being located at shank 30, and with first hole, 33 vertical connections.Articulation locking mechanism 40 mainly can comprise one first scarfing device, is located at the rear end of this head 20, and one second scarfing device is located in first hole 33 of shank 30 front ends, one first elastic device and a pull-button device 45.This first scarfing device is preferably plurality of grooves 23, and along the surface setting of this protuberance 21, this groove 23 preferably extends along the direction of principal axis of perforation 22 with uniformly-spaced.Generally speaking, the surface of protuberance 21 is 180 ° a circular arc, or other suitable shapes, and the surface of protuberance 21 can be provided with 9 grooves, and making the angle between adjacent grooves is 22.5 °.This second scarfing device is preferably a lock pin 42, and this first elastic device is preferably one first spring 41.The front end of lock pin 42 is provided with an interlocking portion, this interlocking portion is roughly the projection 43 of a circular arc, and as shown in Figure 3, first spring 41 is the bottoms that are placed in first hole 33, so that lock pin 42 1 jacking force forwards to be provided, so that the projection 43 of lock pin 42 is rabbeted the location mutually with arbitrary groove 23.Can be provided with two pairs of clamping grooves 44,46 between the front and back end of lock pin 42, and pull-button portion can be provided with for 451 times two relative clip hooks 452, it may extend into and blocks two relative clamping grooves 44 in second hole 34, makes pull-button device 45 can drive lock pin 42 and moves in this first hole 33.Shield type design can be adopted by pull-button portion 451, and its surface can be provided with a plurality of on-slip teeth, strengthening anti-slip effect, or shows that by an English words " LOCK ", a schematic diagram of this a head side and a two-way arrow is combined (please refer to Figure 12).In addition, two relative clamping grooves 44 also can replace (not shown) with a clip hole of being located at lock pin 42 length directions, pull-button portion can be provided with a clip hook (not shown) for 451 times, it is interior to block the clip hole to may extend into second hole 34, also can make this pull-button device 45 drive these lock pins 42 and move in this first hole 33.

Preferably, articulation locking mechanism 40 can further comprise a location device 50.Positioner 50 has a setting element and one second elastic device, preferably, this setting element is a location-plate 51 and this second elastic device is one second spring 52, positioner 50 can place the set large-diameter portion 331 (please refer to Fig. 3) of first hole, 33 front ends, first hole 33 of large-diameter portion 331 rear ends then forms a minor diameter part 332 (please refer to Fig. 3), and large-diameter portion 331 is to twist a shoulder hole in the front end in first hole 33.Location-plate 51 is to have one roughly to be complementary configuration with projection 43, be sticked in wherein the groove 23 with guide projections 43, the rear end of second spring 52 is to replace on this large-

diameter portion

331 and 332 formed shoulders 333 of minor diameter part, and its front end is replaced location-plate 51, so that this location-plate 51 1 jacking force forward to be provided, the projection 53 of location-plate 51 also can together be sticked in wherein the groove 23 with the projection 43 of lock pin 42.

Fig. 2 and 5 shows local plane and the side view that amplifies of hand-held tool respectively.By Fig. 3 and 6 as can be known, pull-button 45 is when being locking-in state, the projection 43 of lock pin 42 and the projection 53 of location-plate 51 respectively with it wherein a groove 23 be mobilizable chimeric, and at pull-button 45 when being released state, only there are the projection 53 of location-plate 51 and a groove 23 wherein to be mobilizable chimeric, thereby when release, head shank 30 relatively pivots, so that lock pin 42 does not cause head 20 with heavily upright nature swing when withdrawing from.By Fig. 8 to 10 as can be known, when external force drive head 20 is selected angle of bend, can make head 20 bend to an angle of presetting to reach the function of branch position, Figure 11 then shows the rotation schematic diagram of shank.

Claims

1. A hand tool with a joint locking mechanism, which has a head and a handle, wherein the head has a rear end, the handle has a front end, and the rear of the head The ends are pivotally connected; the joint locking mechanism is set between the front end of the handle and the rear end of the head, and the front end of the handle is provided with a An extended first hole and a second hole perpendicular to said first hole and communicating with said first hole, characterized in that:

The joint locking mechanism includes:

a first scarfing device, located at the rear end of the head;

A second embedding device, arranged in the first hole at the front end of the handle, has a front end and a rear end;

A knob device, which has a knob part and a fixing part arranged under the knob part, the fixing part extends from the second hole and engages with the second embedding device Combining; and a first elastic device, which is arranged in the first hole, provides a forward pushing force of the second embedding device, so that the front end of the second embedding device and the first A crimping device is crimped and positioned with each other.

2. The hand tool according to claim 1, further comprising a fixing device, wherein the rear end of the head has a convex pivot joint, and the front end of the handle has a concave pivot joint, It is just pivotally engaged with the convex pivot joint; the fixing device is passed between the convex pivot joint and the concave pivot joint, and is formed with the convex pivot joint. It is movably engaged and fixedly engaged with the concave pivot joint.

3. The hand tool according to claim 2, wherein said first engaging means comprises a plurality of grooves arranged at equal intervals along the surface of said convex pivot joint, said second engaging means The front end is provided with at least one embedding portion, so that the at least one embedding portion can just be engaged with one of the said equal grooves, so as to complete the first embedding device and the said first embedding device. The second engaging means are engaged and positioned mutually.

4. The hand tool according to claim 3, further comprising a positioning device, the positioning device has a positioning element and a second elastic device, wherein the positioning element is arranged at the front end of the first hole , and it has a shape that is substantially complementary to the at least one engaging portion at the front end of the second engaging device, so as to guide the at least one engaging portion to snap into the equal recess In one of the slots; the front end of the second elastic device is set at a rear position of the positioning element to provide a forward pushing force for the positioning element.

5. The hand tool according to claim 4, wherein the front end of the first hole has a large diameter portion, and the rear end has a small diameter portion, a shoulder is formed between the large diameter portion and the small diameter portion, The second elastic device is accommodated in the large-diameter portion, and its front end abuts against the positioning element, while its rear end abuts against the shoulder.

6. The hand tool according to claim 2, wherein two opposite locking grooves are provided between the front end and the rear end of the second engagement device, and the fixing part of the pull button device includes two opposite The catch hooks, the two opposite catch hooks can just hold the two opposite catch grooves, so that the pull button device has to drive the second embedding device along the Move in the first hole.

7. The hand tool according to claim 2, wherein a locking hole is provided between the front end and the rear end of the second engagement device, and the fixing part of the pull button device includes a locking hook, The locking hook can just be locked into the locking hole, so that the pull button device can drive the second embedding device to move along the first hole.

8. The hand tool according to claim 3, wherein said convex pivot surface is a circular arc surface.

9. The hand tool according to claim 1, wherein the surface of the knob part of the knob device is provided with a plurality of anti-slip teeth.

10. The hand tool according to claim 1, wherein the surface of the knob part of the knob device is a combination of an English word "LOCK", a schematic diagram showing the side of the head and a two-way arrow .