CN201067881Y

CN201067881Y - Universal pipe jaw

Info

Publication number: CN201067881Y
Application number: CNU2007200412882U
Authority: CN
Inventors: 刘德宝
Original assignee: JIANGSU SAINTY INTERNATIONAL GROUP SUMEX TOOLS CO Ltd
Current assignee: JIANGSU SAINTY INTERNATIONAL GROUP SUMEX TOOLS CO Ltd
Priority date: 2007-08-01
Filing date: 2007-08-01
Publication date: 2008-06-04
Anticipated expiration: 2017-08-01

Abstract

The utility model relates to a universal extension rod and belongs to the technical field of hardware tools. The universal extension rod comprises a sleeve and a rod body one end of which is provided with a first pin hole inserting into one end of the sleeve. The end face of one end of the rod body is a convex spherical surface and the perisporium of one end of the sleeve is provided with a second pin hole. A pin body passes through the first pin hole and the second pin hole to connect the sleeve with the rod body by pin joint. The inside of the sleeve is provided with an elastic part, one end of which resists the end face of the convex spherical surface of the rod body. The sleeve is internally cut with a through hole which is divided into a mutually combining step containing straight-hole section and a trumpet shaped hole reaming section. The hole reaming section is arranged at the cut grafting end of the sleeve and the rod body and the step of the straight-hole section is provided with a magnet which forms an interference fit with the perisporium of the straight-hole section. The other end of the elastic part resists one end face of the magnet. The universal extension rod of the utility model has the advantages of: 1. having simple structure and low cost; 2. being flexible selection in times of combining nested tools; 3. ensuring the reliable connection between the tool working head and the sleeve; 4. being convenient for assembling and disassembling parts.

Description

Universal extension bar

Technical field

The utility model relates to a kind of extension bar, and the mobilizable extension bar in particular on the manual hardware ﹠ tools belongs to the metallic tool fitting technical field.

Background technology

Existing various manual hardware ﹠ tools much is furnished with the accessory-extension bar of special making, and extension bar can be easily connects between various tool operation head and the tool body, thereby adapts to the different work occasion.At an end of its straight-bar special interior hexagonal extension bar of making of pegging graft, peg graft in the shrinkage pool of interior hexagonal extension bar termination during use screwdriver head, four rib posts or sleeve such as pull at the tool operation head again, can finish various manual workings such as some screwdriver.

Understand according to the applicant, above-mentioned traditional extension bar all is upright and outspoken fixing, therefore promptly can't use manual hardware ﹠ tools to carry out operation in narrow space (as the space of instrument self length greater than working space length).Produced the movable extension bar that can turn round again for this reason, this activity extension bar not carry-over moment mutually still when a linear position of operation head and tool body that can make tool, thus satisfy the demand of manual hardware ﹠ tools operation in narrow space.This movable extension bar is referring to United States Patent (USP) (patent No. US6347564), this patent disclosure a kind of instrument (actual is exactly that screw rises), have rotating extension bar parts in this instrument; But this extension bar modular construction design is complicated, causes the cost of manufacture height, is unfavorable for daily promoting the use of; In addition, contain one part-working head in this extension bar parts, two shrinkage pools that these working head two ends have are the dead end formula, and two shrinkage pools do not communicate with each other, and can only carry out from the first end of working when therefore changing the rapid wear elastic component in the working head, and are very inconvenient.

The utility model content

The purpose of this utility model is: the shortcoming at above prior art exists, a kind of universal extension bar that is used on the manual hardware ﹠ tools is proposed, and this extension bar is not only simple in structure, with low cost, and mounting or dismounting are more convenient.

In order to reach above purpose, universal extension bar of the present utility model comprises a sleeve that can match with hand-operated tools operation head and the body of rod that can match with the hand-operated tools body; The described body of rod one end has first pin-and-hole and inserts in described sleeve one end, and the end face of this body of rod one end is protruding spherical; Have second pin-and-hole on the perisporium of described sleeve one end, one shank passes described first pin-and-hole and second pin-and-hole with sleeve and body of rod pin joint, be provided with an elastic component in the described sleeve, one end of this elastic component is against the described body of rod and is on protruding spherical the end face, its improvements are: be shaped on a through hole in the described sleeve, what described through hole was divided into mutual linking contains step straight hole section and horn-like reaming section, described reaming section is positioned at an end of sleeve and body of rod grafting, the step place of described straight hole section is provided with a magnet, the perisporium of described magnet and described straight hole section forms interference fit, and the described elastic component other end is against on magnet one end face.

The further improvement of above-mentioned universal extension bar is, the perisporium of described reaming section is a taper seat, and its tapering is an acute angle.

During assembling, the end that containing of the above-mentioned body of rod is protruding spherical inserts sleeve through hole reaming section from one of sleeve, passes sleeve and this body of rod one end with sleeve and this body of rod one end pin joint with shank again; One elastic component is inserted sleeve through hole straight hole section from the other end of sleeve, then magnet is also inserted sleeve through hole straight hole section and drops on step from the other end of sleeve, promptly finish the assembling of the universal extension bar of the utility model; Certainly, elastic component also can be earlier after the insertion of sleeve through arriving the through hole straight hole section of sleeve after the through hole reaming section of sleeve.Otherwise unloading process then.

During use, the body of rod other end and the hand-operated tools of the universal extension bar of the utility model that assembles are connected (as be sandwiched in the three-jaw chuck of power drill or insert in the shrinkage pool of the handle body of rod that screw rises or the like), again with the tool operation head (as the screw screwdriver bit, collet head or hexagonal handle drill bit etc.) insert sleeve through hole straight hole section from the other end of sleeve, one end face of tool operation head contacts and is held with the magnet other end, promptly can use.When running into the space narrow and small local time, rotatable hand-operated tools body, the body of rod has an end of spherical end face then to follow the rotation of hand-operated tools body in sleeve through hole reaming section, the body of rod reached and was case of bending with its affixed relative sleeve of hand-operated tools body this moment, can be implemented in narrow and small place, space like this and still can use hand-operated tools to carry out operation (as a boring or a screw etc.).

In sum, universal extension bar of the present utility model is compared the extension bar of existing various hand-operated tools adapteds, promptly realize rotating by simple structural design relative to the bending of hand-operated tools body, still can use hand-operated tools to carry out operation in the narrow space thereby be implemented in, therefore with low cost, be suitable for applying; And, can guarantee that therefore the tool operation head is in reliable the connection all the time with sleeve and can not drops because magnet has suction to the tool operation head that inserts sleeve through hole straight hole section; These universal extension bar mounting or dismounting are convenient in addition.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the universal extension bar cross-sectional view of the utility model embodiment.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the cross-sectional view of Knock-Down Component-sleeve among Fig. 1.

Fig. 4 is the cross-sectional view of Knock-Down Component-body of rod among Fig. 1.

The specific embodiment

Embodiment

The universal extension bar of present embodiment comprises a sleeve 1 that can match with hand-operated tools operation head and the body of rod 2 that can match with the hand-operated tools body as shown in Figure 1.One end of the body of rod 2 has first pin-and-hole 4 (as shown in Figure 4) and inserts in the end of sleeve 1, and the end face of an end of this body of rod 2 forms protruding spherical 3.Sleeve 1 is inserted with on this end perisporium of the body of rod 2 and has second pin-and-hole 5 (as shown in Figure 3), passes the end pin joint that first pin-and-hole 4 and second pin-and-hole 5 are about to sleeve 1 and this body of rod 2 with bearing pin 6.

As shown in Figure 1, be provided with coil type spring 7 always in the sleeve 1, an end of spring 7 is against on protruding spherical 3 of the body of rod that inserts in the sleeve 12.As shown in Figure 3, be shaped on a through hole in the sleeve 1, through hole is divided into the straight hole section 8 and a horn-like reaming section 9 of mutual linking, and the reaming section 9 of through hole is positioned at an end of sleeve 1 and the body of rod 2 grafting.Be shaped on a step 12 near the middle part of the straight hole section 8 of through hole, step 12 places are provided with a magnetic patch 10 (as shown in Figure 1); The magnetic patch 10 of present embodiment is disc (as shown in Figure 2), and the perisporium of itself and through hole straight hole section 8 forms interference fit; The other end of spring 7 is against on magnetic patch 10 1 end faces.

As shown in Figure 3, the perisporium of the reaming section 9 of through hole forms a taper seat, and its tapering is an acute angle, and the acute angle scope is 15-75 °, and the preferred tapering of present embodiment is 45 °.The cross section of the straight hole section 8 of through hole is regular hexagon (as shown in Figure 2), and its end perisporium near the reaming section 9 of through hole forms spherical 11 recessed (as shown in Figure 3).The straight hole section 8 and the reaming section 9 mutual joining places of through hole can be direct inflection transition or rounding off, the preferred rounding off of present embodiment (as shown in Figure 3).

During assembling, the body of rod 2 there is a protruding spherical end in one of the sleeve 1 reaming section 9 of inserting sleeve 1 inner via hole, passes second pin-and-hole 5 of first pin-and-hole 4 of sleeve 1 and the body of rod 2 with sleeve 1 and the body of rod 2 pin joints with bearing pin 6; Again spring 7 is inserted in the through hole straight hole section 8 of sleeve 1 from the other end of sleeve 1, then also insert in the through hole straight hole section 8 of sleeve 1 magnetic patch 10 and drop on step 12 from the other end of sleeve 1, this moment, one end of spring 7 was against the body of rod that inserts in the sleeve 12 on protruding spherical 3, the other end is against on magnetic patch 10 1 end faces, promptly finishes the assembling of the universal extension bar of the utility model.Certainly, also can be earlier spring 7 be inserted sleeve 1 from of sleeve 1, arrive the through hole straight hole sections 8 of sleeves 1, and then finish the body of rod 2 by said process an end of protruding spherical end face and the pin joint of sleeve 1 are arranged through through hole reaming section 9 backs of sleeve 1.

Process during dismounting is just in time opposite with above-mentioned assembling process, differs and carefully states.

During use, the other end and the hand-operated tools body of the above-mentioned body of rod that assembles 2 are connected (as be sandwiched in the three-jaw chuck of power drill or insert in the shrinkage pool of the handle body of rod that screw rises, or the like), again with the tool operation head (as the screw screwdriver bit, collet head or hexagonal handle drill bit etc.) insert in the through hole straight hole section 8 of sleeve 1 from the other end of sleeve 1, one end face of tool operation head contacts and is held with magnetic patch 10 other ends, promptly can use.When running into the space narrow and small local time, rotatable hand-operated tools body, the body of rod 2 has an end of protruding spherical end face promptly to follow the rotation of hand-operated tools body in sleeve 1 through hole reaming section 9, the body of rod 2 reaches and is case of bending with the relative sleeve 1 of its affixed hand-operated tools body at this moment, can be implemented in narrow and small place, space like this and still can use hand-operated tools to carry out operation (as a boring or a screw etc.).

Also what deserves to be mentioned is 1) when not needing hand-operated tools to carry out buckling work, only need to get final product with the universal extension bar that existing extension bar commonly used is replaced present embodiment; Or between the body of rod 2 of the universal extension bar of present embodiment and hand-operated tools body, add a cover easily, prop up the body of rod 2 and rotate with the bending that the hand-operated tools body can stop universal extension bar.2) end that protruding spherical end face is arranged of the body of rod 2 only need be by behind one first pin-and-hole 4 and sleeve 1 pin joint, can finish a taper seat that forms at the perisporium by through hole reaming section 9 and be contained and carry out the bending rotation in the space.Obviously compare aforementioned existing rotatable flector, the structure of extension bar part was both simple and practical, saved cost again, applied in being beneficial on a large scale.

The universal extension bar that experiment showed, present embodiment has: 1. simple in structure, easy to use, with low cost; 2. choose flexible 3. when being combined into sheathing tool and guarantee that the tool operation head is in reliable the connection all the time with sleeve and can not drops; 4. the mounting or dismounting part is more convenient.

The utility model is not limited to described in the foregoing description, as 1) can remove recessed spherical 11 of through hole straight hole section 8 one ends, straight hole section 8 and the direct inflection transition of reaming section 9 mutual joining places, so the interior structure of through hole seem more succinct and manufacturing cost lower; 2) spring 7 also can adopt the elastic component of awl coil type spring, non-helical type spring or other type etc.; 3) magnetic patch 10 also can be other regular polygons such as regular hexagon; 4) cross section of straight hole section 8 also can be other regular polygon of square; Or the like.In addition to the implementation, all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1. universal extension bar comprises a sleeve that can match with hand-operated tools operation head and the body of rod that can match with the hand-operated tools body; The described body of rod one end has first pin-and-hole and inserts in described sleeve one end, and the end face of this body of rod one end is protruding spherical; Have second pin-and-hole on the perisporium of described sleeve one end, one shank passes described first pin-and-hole and second pin-and-hole with sleeve and body of rod pin joint, be provided with an elastic component in the described sleeve, one end of this elastic component is against the described body of rod and is on protruding spherical the end face, it is characterized in that: be shaped on a through hole in the described sleeve, what described through hole was divided into mutual linking contains step straight hole section and horn-like reaming section, described reaming section is positioned at an end of sleeve and body of rod grafting, the step place of described straight hole section is provided with a magnet, the perisporium of described magnet and described straight hole section forms interference fit, and the described elastic component other end is against on magnet one end face.

2. according to the described universal extension bar of claim 1, it is characterized in that: the perisporium of described reaming section is a taper seat, and its tapering is an acute angle.

3. according to the described universal extension bar of claim 2, it is characterized in that: the cross section of described straight hole section is a regular hexagon, and it forms one recessed spherical near end perisporium of described reaming section; Described step is positioned near the middle part of described straight hole section.

4. according to the described universal extension bar of claim 3, it is characterized in that: described magnet is the disc magnetic patch.

5. according to the described universal extension bar of claim 4, it is characterized in that: the scope of described acute angle is the 15-75 degree.

6. according to the described universal extension bar of claim 5, it is characterized in that: described acute angle is 45 degree.

7. according to the arbitrary described universal extension bar of claim 1-6, it is characterized in that: described elastic component is a spring, and described shank is a bearing pin.