CN1086977C

CN1086977C - Ratchet type open mouth wrench

Info

Publication number: CN1086977C
Application number: CN99119378A
Authority: CN
Inventors: 蔡振昌
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-14
Filing date: 1999-09-14
Publication date: 2002-07-03
Anticipated expiration: 2019-09-14
Also published as: CN1287905A

Abstract

The present invention relates to a double-ratchet open wrench structure which is mainly composed of a wrench body, a ratchet wheel, a right ratchet, a spring, a left ratchet, an elastic clamp, an axle bed, an upper wrench cover and a fixing screw, wherein the left ratchet and the right ratchet form the duplex lever performance on two parts of the ratchet circumference. The present invention obviously breakthroughs the structure of an open wrench, and in addition, because of the invention of a special double-ratchet action mode, the wrench structure produces the forward gearing transmission operation of one or two ratchets and has the intrinsic continuous and duplicated force transmission efficiency. The present invention also designs various dimension modes which conform to the specifications of the existing screw bolts or screw caps for the selective replacement of the axle bed, and provides the practicality effect for the wide wrench application.

Description

A kind of ratchet type open mouth wrench

The present invention relates to the widely used Wrench of a kind of industry and family, particularly a kind of ratchet type open mouth wrench.

General open-end wrench is a kind ofly to be enough to control nut or bolt head produces the instrument that screws or loosen, no matter be used in industry and household aspect, all be to belong to suitable practicality and use hand-held tool widely again, inquire into regard to present traditional open-end wrench, be not difficult to find the structure content that it is most, promptly be to utilize the ratchet principle to produce the into effect of tooth action, but because of all only being that the single action ratchet is made flowing mode (comprise reversible transition formula) in its design, the single-lift ratchet structure of this kind, in case it is jagged to run into ratchet itself, or a part of circumference position is not when having ratchet, its cooperate ratchet hold up son promptly may because of profile of tooth can not be chimeric, and the ability to function of strength is passed in forfeiture, is not enough to effectively to control screwing or loosening rotation of nut or bolt head; And, Dan Qingzi is used, and only can produce the power transmission effect at a position on the ratchet circumference, therefore, formed power transmission effect equates with the application of force, if the tightness of nut or bolt is stronger, then is to cause the handling of spanner more to be not easy, this shows, the open-end wrench that tradition is known still has not enough place in application of force transmission, it is practical that apparent difficulty deserves to be called.

Main purpose of the present invention is: design novel spanner structure, promptly adopt a kind of ratchet type open mouth wrench, make it reach the purpose that the application of force reaches times power of reception and registration continuously and can be widely used.

The present invention adopts following structure to realize above-mentioned purpose, a wrench body, and the end is provided with the suitable long handle of arc seat, and at inner half the circular-arc flange that forms of arc seat, this flange side also has the containing groove that is arranged with arc edge and circle nest, also is arranged with a plurality of screws on the handle; One ratchet-gear wheel is with curved track groove fit body flange, and is concaved with the opening of clip slot in inside formation one; One elasticity folder is inserted in the clip slot of ratchet-gear wheel, and its side position is set up into the bead of corresponding shape separately; One axle bed for the two pincers ends of peristome are provided with the pedestal of wave groove, and utilizes peripheral teat to be embedded in the clip slot of ratchet-gear wheel, and the concave arc that sets up separately relatively on its teat fastens the spring clip bead; Son is held up on the right side, is the round nest with the chimeric main body containing groove of end axle, and other end is extended into one the block face of spring end by putting is provided, and its body inner arc edge has the profile of tooth of proper engageable ratchet-gear wheel again; Zuo Qingzi is the arc edge with central shaft engaging main body containing groove, and the two ends branch is set as the actuating arm that the block face that urges spring and inner edge are provided with profile of tooth; Spring, for the end respectively against the left and right compression spring of holding up sub-block face; One spanner loam cake, the shape profile is identical with main body, and utilizes a plurality of locating holes that the screw of fixed screw interlocking main body is provided.With combinations thereof both had been ratchet type open mouth wrench.

This ratchet type open mouth wrench, owing to be a left side, the right side is held up son and is nibbled card with two generations of ratchet-gear wheel and cooperate, and utilize the elasticity folder that is positioned in the ratchet-gear wheel clip slot to form bar thick stick principle with axle bed, make and hold up sub chimeric ratchet-gear wheel again and also possess the effect of bar thick stick, therefore, in order to do wrench body during (even bolt head or nut surface have been out of shape also can be chimeric fully) with the ripple glaze peristome grip bolt head of ratchet-gear wheel or nut, the turn power of handle position can via one or simultaneously two hold up son and advance tooth and produce the power transmission effect, screw or unclamp action to finish bolt or nut, make it have the application of force and reach the use effect that the reception room reaches times power continuously; Again owing to use upper and lower end face to be provided with the axle bed of cylinder or sleeve in this kind structure, and same the location with the chimeric spring clip edge of concave arc can reach axle bed and change the outfit easy and increase the implementation benefit of the different functions of use of tool spanner; At the peristome of axle bed, designed the multiple size kenel that meets existing bolt or nut specification, supply the selectivity of axle bed to change the outfit, provide spanner widely used practical function; Wrench body can set up two arc seats in the end separately, with the number of combinations of increase ratchet component and axle bed, and then the axle bed of being convenient to install different size simultaneously or using function, improved the convenience that spanner uses.In sum, the present invention removes and significantly to break through the structural of open-end wrench, more holds up the sub-mode of action because of grinding special the answering of wound, make spanner structure be produced single or two hold up the transmission that son advances tooth and move intrinsic continuity and diploid power transmission effect.

Describe in detail below in conjunction with accompanying drawing;

Fig. 1 is a structural upright exploded view of the present invention

Fig. 2 is that structural group of the present invention is to closing detailed diagrammatic sketch

Fig. 3 is the use schematic diagram of structure of the present invention

Fig. 4 A be the present invention other plant the stereogram of cylinder formula axle bed

Fig. 4 B is the stereogram that the present invention plants telescopic axle bed in addition

Fig. 5 is the assembling schematic diagram of another structure of the present invention.

At first, please cooperate shown in the explanation of consulting Fig. 1 Fig. 2 and Fig. 3, the present invention mainly by wrench body 2, ratchet-gear wheel 3, the right side hold up son 4, spring S, a left side hold up son 5, elasticity folder 6, axle bed 7, spanner loam cake 8 and fixed screw A and form,

Wherein, the end of wrench body 2 is provided with the suitable long handle of arc seat 21, and at arc seat 21 inner half circular-arc flange 22 that form, these flange 22 sides also have the containing groove 24 that is arranged with arc edge 23 and circle nest 241, also are arranged with a plurality of screws 25 on the handle; One ratchet-gear wheel 3 with curved track groove 31 fit body flange 22 is the openings 33 that are concaved with clip slot 32 in inside formation one; One inserts the bullet elasticity folder 6 in the ratchet-gear wheel clip slot 32, is the bead 61 that sets up into corresponding shape in the side position separately; And axle bed 7 is provided with the pedestal of wave groove 711 for 71 pairs of pincers ends of peristome, and utilizes peripheral teat 72 to be embedded in the clip slot 32 of ratchet-gear wheel 3,73 of concave arcs that sets up separately relatively on its teat 72 just with spring clip bead 61 fastenings; It is round nests 241 with end axle 41 chimeric main body containing grooves 24 that son 4 is held up on the right side, and other end is extended into one the block face 42 of spring S end by putting is provided, and its body inner arc edge has the profile of tooth 43 of proper engageable ratchet-gear wheel 3 again; It is arc edge 23 with central shaft 51 engaging main body containing grooves 24 that 5 of sons are held up on a left side, and the two ends branch is set as the actuating arm 54 that the block face 52 that urges spring S and inner edge are provided with profile of tooth 53; The spanner loam cake 8 that one appearance profile and main body 2 are identical is to utilize a plurality of locating holes 81 that the screw 25 of fixed screw A interlocking main body 2 is provided, and is connected into ratchet type open mouth wrench (matching relationship as shown in Figure 2) by group; Its motion analysis is as follows:

When spanner structure during with the wave groove 711 clamping nut B1 of axle bed peristome 71 or bolt head B2, an if left side, the profile of tooth 43 of son 5 and 4 is held up on the right side, 53 proper and ratchet-gear wheel 3 engagements, this moment, wrench body 2 turned clockwise, the external force that is produced can be via a left side, son 5 is held up on the right side, 4 effects are simultaneously passed on, making axle bed 7 be controlled nut B1 or bolt head B2 produces and screws action, make into tooth and after spanner 2 rotates to certain angle, change by counter-clockwise displacement, a so that left side, the right side is held up son 5 and 4 one ends and is pulled because of no fixed support need utilize spring S tension force top, cause its profile of tooth 43,53 can't be with chimeric and produce spring effect (promptly be so-called advance tooth action) with ratchet-gear wheel 3, be carried out up to ratchet-gear wheel 3 in this way repeatedly and go to about 150 when spending, will cause the right side to hold up son 4 can not be chimeric fully with wheel 3 with sour jujube.Hold up the chimeric of son 5 and ratchet-gear wheel 3 but still keep a left side, this moment, external force promptly turned clockwise with spanner 2, can hold up son 5 via a left side then and be passed to ratchet-gear wheel 3, utilized axle bed 7 to reach nut B1 or bolt head B2 again; Repeating aforementioned activities again goes to about about 220 degree up to ratchet-gear wheel 3, it is promptly no longer chimeric with ratchet-gear wheel 3 that this moment, son 5 was held up on a left side, and only have the right side to hold up son 4 chimeric ratchet-gear wheel 3 effects, this moment, external force promptly turned clockwise with spanner 2, then can hold up son 4 via the right side and be transmitted to ratchet-gear wheel 3, utilize axle bed 7 to reach nut B1 or bolt head B2 again; When the structure desire is done counterclockwise switching and is used, then can utilize 2 one-tenths of spanners to be inverted mode with peristome 71 engaging nut B1 or bolt head B2, it promptly is original start that turns clockwise that spanner 2 at this moment is rotated counterclockwise; Elasticity folder 6 makes axle bed 7 produce leverage, so that the left and right son 5,4 of holding up forms double leverage at ratchet-gear wheel 3 circumference two positions, can make motive power through any one or simultaneously two hold up the transmission action that son makes tooth, continuity is provided and the spanner function of holding up the son effect is again arranged again.

And then please cooperate shown in the explanation of Fig. 4-A, Fig. 4-B and Fig. 5: the present invention is installed in the open type axle bed 7 of ratchet-gear wheel clip slot 32 again, interchangeablely dresses up axle bed 7` and the 7`` that upper and lower end face is provided with cylinder 71` or sleeve 71``, and equally with teat 72`; And the chimeric clip slot 32 of 72``, and utilize the chimeric spring clip bead 61 of concave arc 7`, 73`` and locate (shown in Fig. 4-A, Fig. 4-B), change the outfit easy and increase the implementation benefit of the different functions of use of tool spanner to reach axle bed; In addition, wrench body 2 of the present invention can set up two arc seat 21 and 21` in the end separately, to increase the number of combinations (as shown in Figure 5) of ratchet component (comprising ratchet-gear wheel 3 and left and right son 5,4 and the spring S of holding up) and axle bed 7 (also containing elasticity folder 6), and then the axle bed 7 of being convenient to install different size simultaneously or using function, to reach the effect that improves the spanner ease of use.

Claims

1. ratchet type open mouth wrench is characterized in that:

One wrench body; The end is provided with the suitable long handle of arc seat, and at inner half the circular-arc flange that forms of arc seat, this flange side also has the containing groove that is arranged with arc edge and circle nest, also is arranged with a plurality of screws on the handle;

One ratchet-gear wheel; Be with curved track groove fit body flange, and be concaved with the opening of clip slot in inside formation one;

One elasticity folder; Insert in the clip slot of ratchet-gear wheel, its side position is set up into the bead of corresponding shape separately;

One axle bed; For the two pincers ends of peristome are provided with the pedestal of wave groove, and utilize peripheral teat to be embedded in the clip slot of ratchet-gear wheel, the concave arc that sets up separately relatively on its teat fastens the spring clip bead;

Son is held up on the right side; Be round nest, and other end extended into one the block face of spring end by putting is provided that its body inner arc edge has the profile of tooth of proper engageable ratchet-gear wheel again with the chimeric main body containing groove of end axle;

Zuo Qingzi; Be arc edge, and the two ends branch is set as the actuating arm that the block face that urges spring and inner edge are provided with profile of tooth with central shaft engaging main body containing groove;

Spring: for the end respectively against the left and right compression spring of holding up sub-block face;

One spanner loam cake; Appearance profile is identical with main body, and utilizes a plurality of locating holes that the screw of fixed screw interlocking main body is provided.

2. ratchet type open mouth wrench according to claim 1 is characterized in that: the open type axle bed, interchangeablely dress up the axle bed that upper and lower end face is provided with cylinder or sleeve, and equally with the chimeric spring clip bead of concave arc.

3. ratchet type open mouth wrench according to claim 1 is characterized in that: the peristome of axle bed can be the multiple size kenel that meets existing bolt or nut specification.

4. ratchet type open mouth wrench according to claim 1 is characterized in that: wrench body can set up two arc seats in the end separately.