CN201711917U - Structure of connecting rod positioning sleeve - Google Patents

Abstract

The utility model relates to a structure of a connecting rod positioning sleeve, which comprises a connecting rod and a positioning unit. One end of the connecting rod is assembled together with a wrench tool, the other end is provided with a sleeving portion sleeved with a sleeve in a projecting manner, and the inner edge of the sleeving portion is provided with a shaft hole, a compression hole and a positioning hole for assembling the positioning unit. The positioning unit comprises a compression rod, a link rod, a link spring and at least one positioning component, the positioning component is sleeved into the positioning hole of the sleeving portion, a positioning spring is arranged between the positioning component and the wall face of the positioning hole so that the positioning component is elastically pushed by the positioning spring to inwardly contract, the end edge of the link rod corresponding to the positioning component forms an abutting portion which can be exactly in abutted contact with the positioning component, and when the acting compression rod drives the link rod to drive the positioning component to be clamped with or released from the sleeve, the acting direction of the positioning component cannot be affected by gravity, thereby increasing efficiency and practicality of the connecting rod sleeved with the sleeve.

Description

The structure of extension bar abutment sleeve

Technical field

The utility model is subordinate to a kind of field of hand-held tool sleeve extension rod, the particularly improvement carried out of its structure that fixes sleeve of the extension bar of using at pneumatic tool.

Background technology

Along with the progress in epoch and constantly development, the use kenel of hand-held tool, functional type are also as too numerous to enumerate as the stars in the sky, as open-end wrench, box spanner, bottle opener instrument etc.When wherein general sleeve barrel tool uses, for the switching that makes things convenient for sleeve and make sleeve can go deep into narrow place pulling operation, often utilize the usefulness of Rod-connecting tool as binding, switching, and be used for the structure of sheathed sleeve is to utilize the steel ball of its protrusion to be fastened on recess in the sleeve mostly, reaches the purpose of combination, abutment sleeve.Yet for the box spanner of pneumatic type, because the torsion that drives is very big, it is unsafe only utilizing the steel ball location between sleeve and the extension bar, therefore just has extension bar as shown in Figure 1 to produce.

The above-mentioned extension bar of commonly using shown in Figure 1, in the end of front end socket sleeve, push rod 91, connecting rod 92 and backstay 93 are set respectively, this push rod 91 can promote connecting rod 92, and 92 on this connecting rod forms inclined-plane 921 in end face, in order to drive this backstay 93, make these backstay 93 outer ends do to protrude or conceal and shrink in the inside and outside action in this extension bar end, when utilizing this backstay outwards to protrude, be the fixing integrated structure of fast disassembly type, and can avoid sleeve under the driving of high torsion, to separate with extension bar with the sleeve fixing.Yet, when this commonly uses the case use,, when this extension bar desire breaks away from sleeve, must make this backstay 93 be positioned at orientation upwards because be to utilize inclined-plane ejection mode to make interlock between backstay 93 and the connecting rod 92, can make it because of contracting in the gravity downwards.That is when this backstay 93 directions down or during the left and right sides, just can't inwardly contract, cause the inconvenience in the use.In addition, commonly use its connecting rod 92 of extension bar and only can drive the combination that a backstay 93 makes to fix sleeve, steadiness still has deficiency, and necessity of being improved is again arranged.

In view of this, the design people deeply inquires at the aforementioned creation problem of commonly using, and by the research and development of being engaged in related industry for many years and manufacturing experience, actively seek solution, research and development through long-term endeavour, finally Cheng Gong the structure of developing extension bar abutment sleeve of the present utility model is commonly used the problem of creation with improvement.

The utility model content

Main purpose of the present utility model is a kind of all scalable in any direction start is provided and the structure that fixes or break away from the extension bar abutment sleeve of sleeve, to promote convenience and the efficient that extension bar uses.

Another purpose of the present utility model is to provide a kind of structure of extension bar abutment sleeve, makes extension bar have two keepers and combining that sleeve is done to fix, and promotes the steadiness that uses.

For reaching above-mentioned purpose, technical solution of the present utility model is:

A kind of structure of extension bar abutment sleeve, it comprises an extension bar, this extension bar one end and Wrench winding, end then is convexly equipped with the socket part of socket sleeve in addition, and establishes the positioning unit of this sleeve of fixing in this socket part inner edge; Wherein, this positioning unit is formed the elasticity serial verb construction by a depression bar, trace and interlock spring, drive at least one keeper and do to fix the action of this sleeve, this keeper radially is set in the locating hole of this socket part one side, and between this keeper one end and this locating hole wall, establish one and locate spring, this keeper is subjected to the elasticity pushing tow of this retainer spring and inwardly latent contracting, and this trace forms a top-joining part to ora terminalis that should keeper again, just can contact with this keeper contact.

The socket part of this extension bar is formed with an axis hole in the axial inner edge of end face, and the appropriate location of adjacent this locating hole of side radially, then be provided with the pressure hole of vertically running through this axis hole, this axis hole is provided with in regular turn for this interlock spring and trace, and should press Kong Ze to be provided with for this depression bar, and this trace cuts open the body of rod that should depression bar and is provided with a breach, and in the side formation one oblique face that supports of this breach, the body of rod of the corresponding end of this depression bar then is and cuts open the half hitch structure simultaneously, and offer a breach in nearly outer end appropriate location, and this breach one side forms an inclined thrust surface, utilize the inclined thrust surface of this depression bar to contact with the face that tiltedly supports of trace, during this depression bar action, drive this trace and make corresponding displacement interlock, and drive this keeper do fixing simultaneously or break away from the moving action of cover in this axis hole place.

This locating hole can run through this both sides, socket part, and respectively establish simultaneously positioning piece in both sides, this keeper is convex, after its end than path wears this retainer spring, in the inside and outside slip of this locating hole, the ora terminalis that contacts with this keeper of this trace again, formation two is the top-joining part of arc circle shape, and the external end edge contact corresponding contact, and then when making this trace start, can drive the action that this two keeper makes to fix or break away from sleeve simultaneously with this two keeper.

The utility model adopts said structure, pushes this depression bar and can promote to contract in the trace and move inward, and then makes keeper be subjected to the resilient force of retainer spring and inwardly contracts shift-in and break away from sleeve; Otherwise, when the external force of pressing moulded rod is removed, this trace just moves forward because of the resilient force of interlock spring, drive depression bar and keeper displacement simultaneously, make keeper outwards protrude and fix with sleeve, be to utilize depression bar to drive the trace start in a word, drive the keeper fixing or break away from sleeve by trace again, make extension bar have more steadiness with combining of sleeve, utilize this keeper to have independently elastic telescopic characteristics simultaneously, make the orientation of its start must not consider gravity direction, and can promote the efficient and the practicality of this extension bar cover group sleeve.

Below in conjunction with preferred embodiment and conjunction with figs. the utility model is elaborated.

Description of drawings

Fig. 1 is a three-dimensional exploded view of commonly using creation;

Fig. 2 is a three-dimensional exploded view of the present utility model;

Fig. 3 is an assembled sectional view of the present utility model;

Fig. 4 fixes the assembled sectional view of state for the utility model shows keeper and sleeve.

The main element symbol description

10 extension bars 11 are nested with 12 socket parts, hole

13 axis holes 14 are pressed hole 15 locating holes

20 positioning units, 21 depression bars, 211 breach

212 inclined thrust surfaces, 22 traces, 221 breach

222 tiltedly support face 223 top-joining parts 23 interlock springs

24 keepers, 25 retainer springs, 26 cover plates

31 sleeves

The specific embodiment

See also Fig. 2 to shown in Figure 4, be the structure of extension bar abutment sleeve of the present utility model, formed with positioning unit 20 by an extension bar 10, wherein:

This extension bar 10 is the object of general elongated rod shape, the one end be provided with for Wrench (not shown) cover group be nested with hole 11, end then is convexly equipped with and forms a socket part 12 in addition.This socket part 12 is four horn shapes, just but sleeve is in the inner edge of these sleeve 31 corresponding ends, and form an axis hole 13 in the axial inner edge of its end face, radially side two appropriate locations then form adjacent and vertically run through the pressure hole 14 and the locating hole 15 of this axis hole 13, use for this positioning unit and establish for 20 groups.

This positioning unit 20 is combined by members such as a depression bar 21, trace 22, interlock spring 23, two keepers 24 and retainer springs 25.This depression bar 21 is located in this pressure hole 14,22 of this interlock spring 23 and traces are located in this axis hole 13 in regular turn, and this two keeper 24 wear respectively one the location spring 25 after, be sheathed on this locating hole 15 both sides, utilize a cover plate 26 to cover at last again and be fixed in this axis hole 13 outsides.

Hold above-mentioned, 22 pairs of this traces should depression bar 21 the body of rod cut open and be provided with a breach 221, and in the side formation one oblique face 222 that supports of this breach 221, the body of rod of these depression bar 21 corresponding ends is and cuts open the half hitch structure simultaneously, and offer a breach 211 in nearly outer end appropriate location, and these breach 211 1 sides then form an inclined thrust surface 212.Utilize the face 222 that tiltedly supports of the inclined thrust surface 212 of this depression bar 21 and trace 22 contact according to this, and can make this depression bar 21 push the time, drive this trace 22 is made correspondence in these axis hole 13 places displacement.Secondly, respectively this keeper 24 generally is convex, its end than path wears this retainer spring 25 and in these locating hole 15 inside and outside slips, that is this retainer spring 25 places between this keeper 24 and locating hole 15 walls, make this keeper 24 be subjected to the elasticity pushing tow and inside latent the contracting of this retainer spring 25, protrude from outside this locating hole 15 through the ejection of this trace 22 again.What further specify is, the ora terminalis that 22 pairs of this traces should keeper 24 forms the top-joining part 223 of concave arc shape in both sides, and respectively the ora terminalis of these keeper 24 correspondences then forms arc circle shape, just can with top-joining part 223 against contacting.

The above-mentioned member of mat is formed, can promote this trace 22 and inwardly contract when this depression bar 21 is pressed, when this trace 22 moves inward, this two keeper 24 just is subjected to the resilient force of retainer spring 25 and inwardly contracts and move (as shown in Figure 3), and then can break away from sleeve 31.Otherwise when the external force of pushing was removed, this trace 22 was just because of the resilient force of interlock spring 23 moves forward, and drove this depression bar 21 and keeper 24 displacements simultaneously, made this two keeper 24 outwards protrude and fixed (as shown in Figure 4) with sleeve 31.Not only extension bar 10 has more steadiness with combining of sleeve 31, utilizes this keeper 24 to have independently elastic telescopic characteristics simultaneously, makes the orientation of its start must not consider gravity direction, and can promote the efficient and the practicality of these extension bar 10 cover group sleeves 31.

The foregoing description only is to explanation of the present utility model, not from the scope of the utility model spirit, have the knack of this skill person with and the various distortion done, modify and application, all should be included in the patent protection category of the present utility model.

Claims (3)

1. the structure of an extension bar abutment sleeve, it comprises an extension bar, this extension bar one end and Wrench winding, end then is convexly equipped with the socket part of socket sleeve in addition, and establishes a positioning unit that fixes this sleeve in this socket part inner edge;

It is characterized in that: this positioning unit is formed the elasticity serial verb construction by a depression bar, trace and interlock spring, drive at least one keeper and do to fix the action of this sleeve, this keeper radially is set in the locating hole of this socket part one side, and between this keeper one end and this locating hole wall, establish one and locate spring, this keeper is subjected to the elasticity pushing tow of this retainer spring and inwardly conceals and contract, this trace forms a top-joining part to ora terminalis that should keeper again, just can contact with this keeper contact.

2. the structure of extension bar abutment sleeve as claimed in claim 1, it is characterized in that: the socket part of this extension bar is formed with an axis hole in the axial inner edge of end face, and the appropriate location of adjacent this locating hole of side radially, then be provided with the pressure hole of vertically running through this axis hole, this axis hole is provided with in regular turn for this interlock spring and trace, and should press Kong Ze to be provided with for this depression bar, and this trace cuts open the body of rod that should depression bar and is provided with a breach, and in the side formation one oblique face that supports of this breach, the body of rod of the corresponding end of this depression bar then is and cuts open the half hitch structure simultaneously, and offer a breach in nearly outer end appropriate location, and this breach one side forms an inclined thrust surface, utilizes the inclined thrust surface of this depression bar to contact with the face that tiltedly supports of trace, during this depression bar action, drive this trace and make corresponding displacement interlock, and drive this keeper do fixing simultaneously or break away from the moving action of cover in this axis hole place.

3. the structure of extension bar abutment sleeve as claimed in claim 1 or 2, it is characterized in that: this locating hole can run through this both sides, socket part, and respectively establish simultaneously positioning piece in both sides, this keeper is convex, after its end than path wears this retainer spring, in the inside and outside slip of this locating hole, the ora terminalis that contacts with this keeper of this trace again, formation two is the top-joining part of arc circle shape, and the external end edge contact corresponding with this two keeper contact, and then when making this trace start, can drive the action that this two keeper makes to fix or break away from sleeve simultaneously.

Images