CN201220393Y

CN201220393Y - Control sleeve locating structure of telescopic ratchet wrench

Info

Publication number: CN201220393Y
Application number: CNU2008201254734U
Authority: CN
Inventors: 陈家佑
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-08
Filing date: 2008-07-08
Publication date: 2009-04-15
Anticipated expiration: 2018-07-08

Abstract

The utility model relates to a control sleeve position limiting structure of a telescopic ratchet wrench. The telescopic ratchet wrench comprises a joint rod which is used for pivotally sheathing a body part, the control sleeve is sheathed on the outside of the sheathing space of the joint rod and the body part so that the positioning stretching and the shrinkage action between the joint rod and the body part can be realized; a position limiting part is arranged on the peripheral wall of the opening end of the joint rod; a position limiting ring is fixedly screwed on the position limiting part and performs the position limiting function when the control sleeve conducts the forward displacement; when the control sleeve is adjusted to be located on the position limiting position, a return spring is released to abut against the position limiting ring so that the control sleeve is enabled to be kept in the position limiting position, and the position limiting ring can be easily dethatched; and the purposes that the disassembly is convenient and the blockage and the falling of foreign materials between the control sleeve and the joint rod can not easily happen can be achieved.

Description

The control cover position limiting structure of telescopic ratchet spanner

Technical field

The utility model relates to a kind of control cover position limiting structure of telescopic ratchet spanner.

Background technology

The arm of force length of general ratchet spanner is fixed, cause operator's the application of force to fix, so go up than requiring great effort and can't reaching the convenient purpose of using in operation, and United States Patent (USP) is announced No. 2007/0131070 and is disclosed a kind of telescopic ratchet spanner of adjusting ratchet spanner length, can conveniently adjust ratchet spanner length, see also shown in Figure 1, telescopic ratchet spanner assembled sectional view for aforesaid U.S. Patent, this telescopic ratchet spanner 10 includes a connecting rod 11, the whole body portion 12 that the storage tank 111 of this connecting rod 11 is inserted in a ratchet spanner 10 for pivot, and this connecting rod 11 and this 12 sheathed outsides of body portion and be equipped with a control cover 13, wherein, these body portion 12 1 sides are concaved with a chute 121 along long axis direction, equidistantly be provided with the circular locating slot 122 of number on this chute 121, and these connecting rod 11 correspondences locating slot 122 wherein provides the containing hole 112 of a correspondence, for a ccontaining location steel ball 113, and in these connecting rod 11 outer peripheral faces relatively recessed of 13 internal ring wall rings of this control cover be separated with one first positioning ring groove 14 and one second positioning ring groove 15 of suitable distance, on this first positioning ring groove 14 and this second positioning ring groove 15 and be respectively equipped with one the one C shape button, 16 and 1 the 2nd C shape button 17, these control cover 13 internal ring walls are arranged with respectively in relative these both sides, positioning ball 113 position and are formed with a releasing slots 131 and a stopper slot 132, make and form a block 133 for this positioning ball 115 of block therebetween, and this releasing slots 131 is to should a C shape detaining 16 positions, in this stopper slot 132 and be equipped with a returning spring 134, these returning spring 134 front ends are resisted against on these block 133 end faces, the rear end is resisted against the 2nd C shape and detains 17 end faces, can be by operating these control cover 13 convenient these ratchet spanner 10 length of adjustment and remaining on the spacing position.Though above-mentioned existing ratchet spanner 10 can conveniently be adjusted these ratchet spanner 10 length and remains on the spacing position by operating this control cover 13, but during as if the desire repair demolition, then C shape button 16 must be utilized special-purpose instrument dismounting, control cover 13 could be unloaded, with renewal part, so quite inconvenience in the dismounting, again, this control cover 13 and connecting rod 11 front ends, buckle 16 setting because of a C type and be formed with certain slit, so block dirt easily even cause foreign matter to drop, and block this control cover 13, so the real necessity that remains to be improved of the telescopic ratchet spanner of prior art.

The utility model content

The utility model provides a kind of control cover position limiting structure of telescopic ratchet spanner, this telescopic ratchet spanner comprises a connecting rod, be with the whole body portion of a ratchet spanner for pivot, this control is sheathed on sheathed outside of this connecting rod and this body portion, this body portion one side is concaved with a chute along long axis direction, this slide-bar is provided with several locating slots, the outer peripheral face of this connecting rod is this control cover and encircle the recessed location annular groove that has relatively, on this positioning ring groove and be provided with C shape button, and this connecting rod correspondence locating slot has wherein provided a containing hole, be positioned one of them locating slot for a ccontaining location steel ball, and the spacing returning spring that is provided with in the control cover, during for adjustment torsion, abut against this C shape button by this returning spring, this positioning ball then breaks away from the block of this control cover, and is slidedly arranged on this chute for the body minister degree of adjusting this torque spanner, and the position limiting structure of this control cover comprises the limiting section of the openend periphery wall of being located at this connecting rod, and is fixed at the spacing ring on this limiting section.

The beneficial effects of the utility model: when making the utility model operate this control to be placed in the position location by above-mentioned feature, this returning spring front end is resisted against this spacing ring, make this control cover remain on spacing position, and can be fixed on this limiting section by this spacing ring, and can unload this spacing ring and this control cover easily, be difficult for generation between this control cover and this connecting rod and block the purpose that dirt or foreign matter fall into to reach simultaneously to make things convenient for assembling and dismantling and make.

Description of drawings

Fig. 1 is the assembled sectional view of the telescopic ratchet spanner of a kind of prior art.

Fig. 2 is a stereogram of the present utility model.

Fig. 3 is an exploded view of the present utility model.

Fig. 4 is enclosed within on the position of adjusting ratchet spanner length to show control for partial sectional view of the present utility model.

Fig. 5 is enclosed within on the position of spacing ratchet spanner length to show control for partial sectional view of the present utility model.

The specific embodiment

See also Fig. 2 and shown in Figure 3, be the stereogram and the exploded view of the control of a kind of telescopic ratchet spanner of the utility model cover position limiting structure, the control cover position limiting structure of this telescopic ratchet spanner includes a body 20, a connecting rod 30, a control cover 40 and one spacing ring 50; Wherein:

These body 20, one ends have a ratchet head 21, are extended with the whole body portion 22 along this ratchet head 21, and these body portion 22 1 sides are concaved with a chute 23 along long axis direction, equidistantly are provided with several circular locating slots 24 on this chute 23.

This connecting rod 30, it is a hollow lever, its front end is offered the containing hole 32 with an opening 31, the body portion 22 that supplies pivot to be inserted in this body 20, end is a blind end 33 in addition, and be concaved with one in the relative outer peripheral face one suitable distance ring of these opening 31 ends and locate annular groove 34, button is provided with C shape button 35 on this positioning ring groove 34, this C shape button 35 protrudes in outside this positioning ring groove 34, and provided a containing hole 36 in an outer peripheral face correspondence locating slot 24 wherein near these opening 31 ends, for a ccontaining location steel ball 37, spacing mobile this positioning ball 37 of these containing hole 36 confessions is positioned a locating slot 24 wherein, and the periphery wall in these connecting rod 30 openends is provided with a limiting section 38, and this limiting section 38 is located on the opening 31 end periphery walls of this connecting rod 30, and is formed with several external screw threads.

This control cover 40, the pivot cover is located on this connecting rod 30 and this 22 sheathed outsides of body portion, these control cover 40 internal ring walls are arranged with respectively in relative these both sides, positioning ball 37 position and are formed with a releasing slots 41 and a stopper slot 42, make and form a block 43 for this positioning ball 37 of block therebetween, and 41 pairs of this releasing slots should limiting section 38 positions, in this stopper slot 42 and be equipped with a returning spring 44, the circle, elastic recovery position that makes this returning spring 44 is in 24 of adjacent two locating slots, these returning spring 44 front ends are resisted against on these block 43 end faces, the rear end is resisted against this C shape and detains 35 end faces, and be limited in 35 on this block 43 and this C shape button, break away from these positioning balls 37 of block for block 43 of adjusting this control cover 40.

This spacing ring 50, be located at the opening 31 end outer peripheral edges of this connecting rod 30, it is a hollow ring body, be equipped with several internal threads 51 that should limiting section 38 in these spacing ring 50 internal ring walls, for utilizing lock to establish mode with this limiting section 38 screws togather, for adjusting this control cover 40 when the spacing position, 41 of this releasing slots overlap should spacing ring 50, these block 43 end walls are this spacing ring 50 of block then, and this control cover 40 is remained on the spacing position.

Still see also shown in Figure 3, in the time will assembling this telescopic ratchet spanner, at first this C shape button 35 is buckled on the positioning ring groove 34 of this connecting rod 30, be inserted in this returning spring 44 again, this spacing ring 50 also can be inserted in and this control cover 40 in regular turn in this body portion 22, this body portion 22 can be inserted in the containing hole 32 of this connecting rod 30, with this body portion 22 24 pairs of locating slots wherein should the containing hole 36 of connecting rod 30, this positioning ball 37 can be inserted this containing hole 36 and be positioned on this locating slot 24, should control cover 40 again detains 35 directions towards C shape and compresses, again this spacing ring 50 is locked on this limiting section 38, can decontrol this control cover 40, promptly finish Assembly Action, in the time will dismantling, unscrewing this spacing ring 50 can dismantle.

See also shown in Figure 4, for partial sectional view of the present utility model is enclosed within on the position of adjusting ratchet wrench length to show control, in the time will adjusting the length of this ratchet wrench, promptly adjust the length that this body portion 22 extends, at first, this connecting rod 30 will be gripped on the other hand and cover 40 should be controlled towards right-hand slippage, another hand grips this body portion 22, simultaneously, this returning spring 44 is compressed towards this C shape button 35 by the block 43 in this control cover 40, at this moment, 37 of this positioning balls break away from the blocks of this block 43 in a locating slot 24 wherein, are slidedly arranged on the chute 23 of the releasing slots 41 of this control cover 40 and this body portion 22, and the block by this spacing ring 50, prevent that this positioning ball 37 from skidding off, this connecting rod 30 can relative cunning be established by the embedding system of positioning ball 37 no longer with 22 in this body portion, and the user can stretch and shorten these body portion 22 length arbitrarily.

See also shown in Figure 5, for partial sectional view of the present utility model is enclosed within on the position of spacing ratchet wrench length to show control, after the length of having adjusted this

body portion

22,24 pairs of the locating slots of correspondence should be controlled cover 40, can should control cover 40 back passes, make this returning spring 44 discharge front end on these block 43 end faces, the rear end is resisted against this

C shape button

35,42 covers of the releasing slots of this control cover 40 are should spacing ring 50, and these spacing ring 50 madial walls can should control overlap 40 block 43 by block, this control cover 40 is remained on the spacing position, simultaneously, this positioning ball 37 is limited on this locating slot 24 by the block of this block 43, and embedding system this connecting rod 30 and this body portion 22, this control cover 40 is remained on the spacing position, again, when this control cover 40 remains on spacing position, be a state of fitting between this control cover 40 and this spacing ring 50 substantially, and the leading edge of this spacing ring 50 just trims with these control cover 40 leading edges so that should control overlap 40 and this connecting rod 30 between difficult generation block the purpose that dirt or foreign matter fall into.

Claims

1, a kind of control cover position limiting structure of telescopic ratchet spanner, this telescopic ratchet spanner comprises a connecting rod, this connecting rod is a hollow lever, its front end is provided with opening, and be with the whole body portion for pivot, this body portion front end periphery also is arranged with a control cover, this body portion one side is concaved with a chute along long axis direction, this chute is provided with several locating slots, the outer peripheral face of this connecting rod leading portion is this control cover and encircle the recessed location annular groove that has relatively, and on this positioning ring groove and be provided with C shape button, and this connecting rod correspondence locating slot has wherein provided a containing hole, and be provided with a returning spring in the control cover, can compress this returning spring during for this control cover of adjustment and replace toward C shape button direction, at this moment, this positioning ball then breaks away from the block of this control cover, and for adjusting this body minister degree, it is characterized in that:

One limiting section is located on the periphery wall of this connecting rod openend, and has several external screw threads;

One spacing ring is a hollow ring body, and its internal ring wall is to should being equipped with several internal threads by limiting section, and this spacing ring is fixed on this limiting section.

2, overlap position limiting structure according to the control of the described telescopic ratchet spanner of claim 1, it is characterized in that, this control cover internal ring wall is concaved with a releasing slots and a stopper slot respectively in these both sides, positioning ball position relatively, and form a block therebetween, and this releasing slots is to should the spacing ring position, in this stopper slot then ring establish this returning spring.

3, overlap position limiting structure according to the control of the described telescopic ratchet spanner of claim 1, it is characterized in that, when this control cover remains on spacing position, be a state of fitting between this control cover and this spacing ring substantially, and the leading edge of this spacing ring is proper and this control cover leading edge trims.