CN201098863Y

CN201098863Y - Modified fast-disengaging extension rod structure

Info

Publication number: CN201098863Y
Application number: CNU2007200985297U
Authority: CN
Inventors: 陈章英
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-13
Filing date: 2007-09-13
Publication date: 2008-08-13
Anticipated expiration: 2017-09-13

Abstract

An improved quick-release extension rod structure is provided and is composed of a housing body, a rod body and a detent unit. The housing body with a hollow shape sheathes the rod body. One end of the rod body is provided with a nesting part. The detent unit is arranged between the housing body and the rod body, and coordinately controlled by the housing body; the detent unit is provided with a convex part, and a first end and a second end are respectively provided on the two ends of the detent unit ; in a first state, the detent unit is constrained at the convex part, ensuring that the first end of the detent unit radially moves outwards along the rod body and recedes to the outside of the nesting part; in a second state, the first end of the detent unit radially moves inwards along the rod body into the nesting part to fixedly limit position; through the structure, the purpose of quick release and plug-in connection and the effect of avoiding the detent unit incapability in reverting to the first state can be achieved. The improved quick-release extension rod structure can achieve the purposes of the quick release and the plug-in connection with the screwdriver head, and the situation that the plug-in connection with the screwdriver head can not be realized as a result of the nesting block incapability in reverting can be avoided.

Description

Improved fast uncoupling bar structure

Technical field

The utility model relates to a kind of hand-operated tools, relates in particular to a kind of quick grafting screwdriver head and prevent to peg graft to lose efficacy and simply constructed improved fast uncoupling bar structure.

Background technology

Existing connecing soon taken off bar and seen also shown in Figure 1A to Fig. 1 C, this fast uncoupling bar is to have a body 10 and a body of rod 20, these body of rod 20 inside are provided with a shrinking block 30 and an elastic component 40, this body 10 is socketed on outside the body of rod 20, and a clamping piece 21 is set between this body 10 and the body of rod 20, this shrinking block 30 is provided with a link stopper 31 and a limited block 32, normal condition is subjected to clamping piece 21 effects (shown in Figure 1A) for this limited block 32, reach spacing purpose, this link stopper 31 can avoid clamping piece 21 other ends to act on shrinking block 30, take off bar and be subjected to external force effect or vibration effect if connect soon, cause this shrinking block 30 displacements, this clamping piece 21 is towards the body of rod 20 inner move (shown in Figure 1B) simultaneously, when the time spent is done in these shrinking block 30 below elastic components 40 ejections, then this link stopper 31 or shrinking block 30 front ends are subjected to clamping piece 21 effects (shown in Fig. 1 C), can't the involution normal position, cause screwdriver head to insert, take off the effect that bar integral body loses the grafting screwdriver head and connect soon, so puzzlement that causes the user to use, therefore as a complete unit, be the not high design of a kind of stability, the necessity that is improved is arranged in fact.

The utility model content

Technical problem underlying to be solved in the utility model is, overcome the above-mentioned defective that prior art exists, and a kind of improved fast uncoupling bar structure is provided, and reach the purpose of quick release and grafting screwdriver head, avoid shrinking block can't involution cause the pegging graft situation of screwdriver head.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of improved fast uncoupling bar structure comprises a body, a body of rod and a clamping piece; It is characterized in that this body is the hollow form, and this body is socketed on outside the body of rod; This body of rod one end is a fit portion; This clamping piece is to be installed between the body and the body of rod and controlled by the body interlock, this clamping piece is provided with a protuberance, these clamping piece two ends are respectively one first end and one second end, and when first state, this clamping piece is subject to protuberance, make first end of this clamping piece move along body of rod radial outward, and retreat to outside this fit portion, when second state, first end of this clamping piece moves along body of rod radial inward, and go deep in this fit portion, in order to spacing fixing; Reach the purpose of quick release and grafting by said structure, and avoid the effect that clamping piece can't involution to the first state.

Aforesaid improved fast uncoupling bar structure wherein has the section of replacing in the body, so that clamping piece is pushed in the fit portion when second state.

Aforesaid improved fast uncoupling bar structure, wherein clamping piece is a U-shaped, and this first end is short than second end.

Aforesaid improved fast uncoupling bar structure, wherein protuberance is circle or triangle.

Aforesaid improved fast uncoupling bar structure, wherein protuberance has elasticity.

Aforesaid improved fast uncoupling bar structure, wherein protuberance is spring or shell fragment.

First end by this clamping piece moves along body of rod radial inward, and go deep in this fit portion, in order to spacing screwdriver head, after finishing using, push away this shrinking block involution to the first state on this body, unload screwdriver head simultaneously, reach the purpose of quick release and grafting screwdriver head by said structure, and first end of clamping piece is avoided shrinking block can't involution cause the pegging graft situation of screwdriver head along the characteristic that body of rod radial outward moves when first state.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Figure 1A is the normal condition profile of existing fast uncoupling bar structure.

Figure 1B is the transition state profile of existing fast uncoupling bar structure.

Fig. 1 C is the failure state profile of existing fast uncoupling bar structure.

Fig. 2 is the perspective exploded view of the improved fast uncoupling bar structure of the utility model.

Fig. 2 A is the local enlarged diagram of decomposition texture shown in Figure 2.

Fig. 3 is the first state schematic perspective view of the improved fast uncoupling bar structure of the utility model.

Fig. 4 is the second state schematic perspective view of the improved fast uncoupling bar structure of the utility model.

Fig. 5 is first state profile of the improved fast uncoupling bar structure of the utility model.

Fig. 5 A is the local enlarged diagram of structure shown in Figure 5.

Fig. 6 is second state profile of the improved fast uncoupling bar structure of the utility model.

Fig. 6 A is the local enlarged diagram of structure shown in Figure 6.

The number in the figure explanation:

10------the body 11------sections of replacing

The 20------body of rod 21------clamping pieces

211------first end 212------, second ends

213------protuberance 22------holes

23------draw-in groove 24------joint portions

25------fit portion 30------shrinking blocks

31------link stopper 32------limited blocks

33------pushing and pressing face 40------elastic components

41------C shape button 42------fixing covers

50------connecting rod 51------binding ends

60------screwdriver head 61------concave ring grooves

62------lead angle 63------drive ends

The specific embodiment

The utility model is relevant a kind of improved fast uncoupling bar structure, see also Fig. 2 to shown in Figure 4, comprise that a body 10, a body of rod 20, a clamping piece 21, a shrinking block 30, two elastic components 40, C shape button 41, fix cover 42, one connecting rod 50 and a screwdriver head 60, wherein:

This body 10 is the hollow form, and the internal diameter of this body 10 is slightly larger than the external diameter of the body of rod 20, and this body 10 is socketed on outside the body of rod 20, is provided with a section of replacing 11 in this body 10;

These body of rod 20 inner ccontaining shrinking block 30 and elastic components 40, this body of rod 20 radially is provided with two holes 22, this hole 22 is to be through to the body of rod 20 inside, these body of rod 20 external rings are established a draw-in groove 23, this draw-in groove 23 is to detain 41 chimericly for C shape, and this body of rod 20 is outside to be detained 41 belows with C shape and elastic component 40 is set in regular turn and fixes cover 42, and these body of rod 20 1 ends are provided with a joint portion 24 and a fit portion 25, this joint portion 24 and fit portion 25 are hexagons, plug for this connecting rod 50 and screwdriver head 60 respectively;

This clamping piece 21 is U-shaped (seeing Fig. 2 A for details), and be installed between this body 10 and the body of rod 20, and be arranged among the hole 22, this clamping piece 21 is provided with a protuberance 213, this protuberance 213 supports for circle or triangle paste with the body of rod 20 effects, and this protuberance 213 also has elasticity and acts on the body of rod 20 and pushing against, as spring or shell fragment, these clamping piece 21 two ends are respectively one first end 211 and one second end 212, and this first end 211 is short than second end 212;

This shrinking block 30 is provided with a link stopper 31, and these shrinking block 30 1 ends are provided with a limited block 32, and the other end is a pushing and pressing face 33, and these limited block 32 belows contact with elastic component 40;

These connecting rod 50 1 ends are inserted in the joint portion 24 of the body of rod 20, and a spacing end of fixing this elastic component 40, and these connecting rod 50 other ends are provided with a binding end 51, use for lever or other pulling tool combination;

This screwdriver head 60 is provided with a concave ring groove 61, a lead angle 62 and a drive end 63, this lead angle 62 is to work in coordination with link stopper 31, function with correcting and location, this drive end 63 are to cooperate screw to can be a word, cross, square or hexagon, and present embodiment is example with the cross.

See also shown in Fig. 5 and Fig. 5 A, when first state, this shrinking block 30 is subjected to elastic component 40 pushing and pressing, limited block 32 by second end, the 212 spacing shrinking blocks 30 of this clamping piece 21, make this shrinking block 30 be unlikely to eject outside the body of rod 20, and this clamping piece 21 is subject to protuberance 213, this clamping piece 21 is that the fulcrum rotation is (if this protuberance 213 is spring or shell fragment with protuberance 213, then this clamping piece 21 is pushed against by the elastic force effect), make first end 211 of this clamping piece 21 move along the body of rod 20 radial outward, be unlikely to penetrate with this body of rod 20 inside, and cause the phenomenon of interference, cause this screwdriver head 60 to peg graft; See also again shown in Fig. 6 and Fig. 6 A, when second state, this screwdriver head 60 is plugged in fit portion 25, this lead angle 62 cooperates link stopper 31 effects, to contact and push against shrinking block 30 downward with this pushing and pressing face 33, interlock is oppressed this elastic component 40, section of replacing on this body 10 11 and clamping piece 21 pushing and pressing effects simultaneously, and first end 211 that drives this clamping piece 21 moves along body of rod radial inward, and go deep into this body of rod 20 inside, this first end 211 fastens concave ring groove 61, in order to spacing screwdriver head 60, so promptly finishes the action of grafting screwdriver head 60.

As taking out down screwdriver head 60, only need to promote gently this body 10, this section of replacing 11 does not act on clamping piece 21, this clamping piece 21 and shrinking block 30 involution to the first states, this screwdriver head 60 is not subjected to clamping piece 21 position-limiting actions, and this shrinking block 30 outwards ejects, and interlock ejects screwdriver head 60, this limited block 32 is subjected to clamping piece 21 position-limiting actions afterwards, so promptly easily finishes the operation that discharges screwdriver head 60.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1, a kind of improved fast uncoupling bar structure comprises a body, a body of rod and a clamping piece; It is characterized in that,

This body is the hollow form, and this body is socketed on outside the body of rod;

This body of rod one end is a fit portion;

This clamping piece is to be installed between the body and the body of rod and controlled by the body interlock, this clamping piece is provided with a protuberance, these clamping piece two ends are respectively one first end and one second end, and when first state, this clamping piece is subject to protuberance, make first end of this clamping piece move along body of rod radial outward, and retreat to outside this fit portion, when second state, first end of this clamping piece moves along body of rod radial inward, and go deep in this fit portion, in order to spacing fixing.

2, improved fast uncoupling bar structure according to claim 1 is characterized in that having the section of replacing in the described body, so that clamping piece is pushed in the fit portion when second state.

3, improved fast uncoupling bar structure according to claim 1 and 2 it is characterized in that described clamping piece is a U-shaped, and this first end is short than second end.

4, improved fast uncoupling bar structure according to claim 1 and 2 is characterized in that described protuberance is circle or triangle.

5, improved fast uncoupling bar structure according to claim 1 and 2 is characterized in that described protuberance has elasticity.

6, improved fast uncoupling bar structure according to claim 1 and 2 is characterized in that described protuberance is spring or shell fragment.