CN2799185Y

CN2799185Y - Telescopic bar

Info

Publication number: CN2799185Y
Application number: CN 200520026052
Authority: CN
Inventors: 李�杰
Original assignee: Tianjin Jinmao Group Co Ltd
Current assignee: Tianjin Jinmao Group Co Ltd
Priority date: 2005-06-03
Filing date: 2005-06-03
Publication date: 2006-07-26
Anticipated expiration: 2015-06-03

Abstract

The utility model relates to a telescopic rod, which comprises an inner tube and an outer tube which are telescopic and a mutually sheathed, wherein the tube wall of the inner tube is provided with a positioning hole which is matched and combined with a positioning pin of a locking device; a tapered connecting head group of an installing tool head is connected with one end of the inner tube; the locking device which is provided with the positioning pin is sheathed on the outer tube; a handle is arranged at the other end of the outer tube. The utility model which is provided with a guide sleeve can cause the telescopic rod to be more stable, and the utility model can effectively prevent the adverse influence caused by the sliding touch between the inner tube and the outer tube from being generated; a cover body is fixedly provided together with a sleeve main body by pin bolts which are arranged in the locking device so that the safety of a tool rod is enhanced, and the operation is more convenient; the utility model which is provided with the tapered connecting head structure can enable a rod body to be matched and connected with different tool heads, and the applicability is strong. The integral arrangement of the utility model has the advantages of simple structure and safety. Compared with the prior art, the telescopic rod is more attractive to acceptors.

Description

Expansion link

Technical field

The utility model belongs to the hand-operated tools field, particularly has the expansion link of guiding mechanism and locked configuration.

Background technology

Known hand-operated tools expansion link, a kind of bar telescopic positioning device is disclosed for No. 94204530.0 as disclosed Chinese patent, mainly plug mutually flexible in, one location device is set between the outer body of rod, this positioner then is to clamp by one first, one clamping body and one second is formed to clamp, by first, two compel to the gradient of clamp that body is jammed by two ends of clamping body goes in its gradient inner edge, make stressed the strutting of its ring wall and dually push against outer bar inwall, and because of first, two to clamp the two is the mode with the jammed clamping body in both sides, therefore have that the strength of pushing doubles and firmly, the effect that is difficult for disengagement.

The device that and for example disclosed Chinese patent discloses a kind of in order to fastening means No. 01264414.5, comprise a lever, this lever has a holding part for a ccontaining location mechanism, and detent mechanism comprises a button, a spring and a buckle, under the normality, spring is the press-side of ejection button upwards, the fastening end of buckle is then protruded button downwards, and engages with the groove of tool heads, and borrows and push press-side, impel the positioning end of buckle to leave the groove of tool heads, deviate from lever to allow tool heads.

Disclosed for another example Chinese patent discloses a kind of stepping pin formula expansion link for No. 99257310.6, its outer tube right-hand member suit one handle, positioning sleeve is housed in the outer tube, the locking cover of locking device is sleeved on above the outer tube, button and secondary spring is housed, suit deflecting plate above the alignment pin in the groove of the projection of locking cover, this plate stretches to button, return spring is positioned at the top of alignment pin, puts a capping again, and interior pipe is inserted in the hole of locking cover, and extend in the outer tube, sheath and nipple are housed on the interior pipe, press button, the hole of pipe in alignment pin leaves, pipe can move up and down in making, the levelling Len req, telescoping tube can be connected with other instruments, enlarges its scope of application.

The interior pipe of long expansion link is packed into behind the outer tube, interior pipe has inclination in outer tube, thereby can bump the generation adverse influence because of the cunning between inner and outer pipes, known expansion link relates to the scheme complex structure of head it off, a kind of structure of market demand is more brief, and the expansion link that stability better has guiding and lock function comes out.

Summary of the invention

Problem to be solved in the utility model is to overcome the above-mentioned defective that aforementioned techniques exists, a kind of expansion link is provided, comprise telescopic interior pipe of mutual intussusception and outer tube, wherein, be provided with on the inner pipe wall with the alignment pin coupling of locking device and combine locating hole, the taper joint group of one erecting tools head is connected with interior Guan Yiduan, and a locking device with alignment pin is sleeved on the outer tube, and one handle is arranged at the outer tube other end.

The utility model solves its technical problem and also can take following technical scheme further to realize.

Aforesaid expansion link, wherein, described locking device, comprise the cover body that is connected with outer tube, interior pipe is threaded onto in the outer tube via the less interior tube inlet portion of this cover body bore, on the cover body, be convexly equipped with suitching type button portion, one lock beans press-fit locking key portion in button portion in conjunction with a spring by the locking gland, in abutting connection with this locking member portion start button portion is set, one spring leaf press-fits start button portion in button portion in conjunction with spring by the open portion gland, one end of spring leaf is held aforementioned lock beans in the month, and the other end device of this spring leaf is in the bottom of open portion gland; Be fitted to each other part device one pin at locking gland and cover body.

Aforesaid expansion link, wherein, described taper joint group has externally threaded connector by the taper joint of the protruding key of assembling of an outer surface distribution erecting tools head in conjunction with one and constitutes.

Aforesaid expansion link, wherein, a fairlead is by the tail end of pin apparatuses at interior pipe.

Aforesaid expansion link, wherein, described fairlead is made of along the flange with the outer tube diameter coupling that is provided with the joint portion that is complementary with interior pipe and this fairlead end.

Aforesaid expansion link wherein, in axial direction connects on inner pipe wall guide part is set.

Aforesaid expansion link, wherein, described guide part is set to along interior tubular axis to the guide surface that connects.

Aforesaid expansion link, wherein, the described locating hole that combines with the alignment pin coupling of locking device is provided with along aforesaid targeting part cloth.

Aforesaid expansion link, wherein, an outer mouth protective cover is sleeved on inner tube portion, and cover covers the joint portion of the connector of interior pipe and taper joint group.

The utility model compared with prior art has significant advantage and beneficial effect.By above technical scheme as can be known, the utility model has following advantage at least under the structure configuration of excellence:

The utility model is provided with fairlead, can make expansion link more steady; Can effectively avoid bumping the generation adverse influence because of the cunning between inner and outer pipes; The utility model is arranged in the locking device and with pin lid and cover body is installed, and makes the security of tool bar improve more convenient operation; The utility model is provided with taper joint structure, and it is strong to make the body of rod can connect different tool heads applicabilities; The utility model integral body is provided with simple in structure, and is safe and reliable, and more affine compared with the prior art audient is applicable to multiple hand-operated tools, and it is stronger that industry is promoted power, is easy to be accepted by market, realized aforesaid goal of the invention fully.

For further understanding technology contents of the present utility model, characteristics and effect, exemplify following preferred embodiment now, and conjunction with figs. is described in detail as follows:

The specific embodiment of the present utility model is provided in detail by following most preferred embodiment.

Description of drawings

Fig. 1 is the utility model overall structure schematic diagram;

Fig. 2 is the utility model overall structure decomposing schematic representation

Fig. 3 is that the utility model A-A is to partial cutaway schematic.

The specific embodiment

Below in conjunction with preferred embodiment, the specific embodiment, feature and effect thereof that foundation the utility model is provided, describe in detail as after; For simple and purpose clearly, hereinafter appropriate omission the description of known technology, in order to avoid those unnecessary details influences are to the description of the technical program.

As Figure 1-3, a kind of expansion link, comprise telescopic interior pipe 1 of mutual intussusception and outer tube 2, wherein, on inner pipe wall, in axial direction connect guide part 11 is set, this guide part is set to along interior tubular axis to the guide surface that connects, combine locating hole 111 along these guide part 11 distribution settings with the alignment pin coupling of locking device, the taper joint group 3 of one erecting tools head is connected with interior Guan Yiduan, one locking device 5 with alignment pin is sleeved on the outer tube, and a fixed handle 6 is arranged at the outer tube other end;

One fairlead 7 is by the tail end of pin 72 device at interior pipe, and described fairlead 7 is made of along the flange 71 with the outer tube diameter coupling that is provided with joint portion 70 and this fairlead end of being complementary with interior pipe.Fairlead installs on inner pipe by pin 72 by its joint portion 70, and the flange 71 of this fairlead and outer tube diameter coupling have promptly limited interior pipe and deviate from by outer tube, and pipe is flexible along outer coaxial tube in can well guiding again.

Described locking device 5, comprise the cover body 51 that is connected with outer tube, interior pipe is threaded onto in the outer tube via the less interior tube inlet portion of this cover body bore, on cover body 51, be convexly equipped with suitching type button portion 511, one lock beans 52 press-fit locking key portion 5111 in button portion in conjunction with a spring 53 by locking gland 54, in abutting connection with this locking member portion start button portion 5112 is set, one spring leaf 56 press-fits start button portion in button portion in conjunction with spring 55 by open portion gland 57, one end of spring leaf 56 is held aforementioned lock beans 52 in the month, and the other end device of this spring leaf is in the bottom of open portion gland;

When depressing start button portion, spring leaf has been held the lock beans in the month, and the user that leaves adjusts the length of expansion link.

For the locking gland 54 that prevents locking key portion ejects under the effect of spring leaf, locking gland 54 and cover body be fitted to each other part device one pin 58, to improve the instrument security.

Taper joint group 3 has externally threaded connector 31 by the taper joint 32 of the protruding key of assembling of an outer surface distribution erecting tools head in conjunction with one and constitutes;

One outer mouth protective cover 4 is connected with the port part tight fit with the combination of taper joint group of interior pipe, and pipe is hidden in the sheath with connector 31 joint portions of taper joint group in making, and is not only attractive in appearance but also the effect of stable taper joint group connector 31 arranged.

After the preferred embodiment that describes in detail, being familiar with this technology personage can clearly understand, do not breaking away under described claim and the spirit, can carry out various variations and modification, and the utility model also is not subject to the embodiment of illustrated embodiment in the specification.

Claims

1. expansion link, comprise mutual intussusception telescopic interior pipe (1) and outer tube (2), it is characterized in that, be provided with on the described inner pipe wall with the alignment pin coupling of locking device and combine locating hole (111), the taper joint group (3) of one erecting tools head is connected with interior Guan Yiduan, one locking device (5) with alignment pin is sleeved on the outer tube, and one handle (6) is arranged at the outer tube other end.

2. expansion link as claimed in claim 1, it is characterized in that, described locking device (5), comprise the cover body (51) that is connected with outer tube, interior pipe is threaded onto in the outer tube via the less interior tube inlet portion of this cover body bore, on cover body (51), be convexly equipped with suitching type button portion (511), one lock beans (52) press-fit locking key portion (5111) in button portion in conjunction with a spring (53) by locking gland (54), in abutting connection with this locking member portion start button portion (5112) is set, one spring leaf (56) press-fits start button portion in button portion in conjunction with spring (55) by open portion gland (57), one end of spring leaf (56) is held aforementioned lock beans (52) in the month, and the other end device of this spring leaf is in the bottom of open portion gland; Be fitted to each other part device one pin (58) at locking gland (54) and cover body.

3. expansion link as claimed in claim 2 is characterized in that, described taper joint group (3) has externally threaded connector (31) formation by the taper joint (32) of the protruding key of assembling of an outer surface distribution erecting tools head in conjunction with one.

4. expansion link as claimed in claim 3 is characterized in that, a fairlead (7) is by the tail end of pin (72) device at interior pipe.

5. expansion link as claimed in claim 4 is characterized in that, described fairlead (7) is made of along the flange (71) with the outer tube diameter coupling that is provided with the joint portion (70) that is complementary with interior pipe and this fairlead end.

6. expansion link as claimed in claim 5 is characterized in that, in axial direction connects on inner pipe wall guide part (11) is set.

7. expansion link as claimed in claim 6 is characterized in that, described guide part (11) is set to along interior tubular axis to the guide surface that connects.

8. expansion link as claimed in claim 7 is characterized in that, the described locating hole (111) that combines with the alignment pin coupling of locking device is provided with along aforesaid targeting part cloth.

9. expansion link as claimed in claim 8 is characterized in that, an outer mouth protective cover (4) is sleeved on inner tube portion, and cover covers the joint portion of the connector (31) of interior pipe and taper joint group.