CN201022510Y

CN201022510Y - Pipe leg telescopic regulator

Info

Publication number: CN201022510Y
Application number: CNU2007201062655U
Authority: CN
Inventors: 杨宝庆
Original assignee: Zhejiang Hengfeng Top Leisure Co Ltd
Current assignee: Zhejiang Hengfeng Top Leisure Co Ltd
Priority date: 2007-02-06
Filing date: 2007-02-06
Publication date: 2008-02-20
Anticipated expiration: 2017-02-06

Abstract

The utility model provides a foot tube expansion regulation device, comprising a convex wheel wrench, a regulating seat, a pressure block, a U-shaped card and a center shaft. Inner of the regulating seat is hollow structure, the upper is provided with a large hollow cavity which is provided with an outer foot tube, and the lower is provided with a small hollow cavity which is provided with an expansion inner tube. The regulating device hollow cavity is provided with the pressure block, U-shaped card therein. The convex wheel wrench is connected with the regulating seat or the pressure block through the center shaft. The utility model uses two schemes to regulate the expansion of the expansion inner tube, one is that the pressure block is at same side with the convex wheel wrench; the other is that the pressure block is arranged at the opposite side of the convex wheel wrench. The two schemes can overcome the disadvantages of the prior art whose foot tube lock is unstable and the expansion tube surface is damaged, which can be used for the regulation of pin height of chair, desk, and bed, etc.

Description

Pin pipe expansion and cotraction regulator

Technical field

The utility model relates to a kind of B﹠C, B﹠C that especially a kind of pin pipe height can be regulated.

Background technology

The structure of existing a kind of pin pipe arrangement for adjusting height is seen China utility model patent ZL200620102243.7, and it is made up of card, adjusting base, spring, adjustment seat, transmitter shaft, cam spanner, central shaft and screw.This utility model has following shortcoming: card directly is stuck on the internal pin when complex structure and locking state, easily the internal pin card is gone out scar even damage; And having only unidirectional locking effect along the direction of pin pipe, when the outside direction of internal pin is pulled out, be easy to pull out, locking effect is not firm.

Summary of the invention

Problems such as the purpose of this utility model provides a kind of pin pipe expansion and cotraction regulator and solves the complex structure that exists in the sub-arrangement for adjusting height of B﹠C in the prior art, blocks bad pipe easily and has only one-way locking, and locking effect is not firm.

Above-mentioned technical problem of the present utility model is to solve by two following technical schemes:

Scheme one: the utility model is by cam spanner 1, adjustment seat 2, briquetting 3, U-shaped card 4 and central shaft 5 are formed, see Fig. 1, adjustment seat 2 inside are cavity structure, the big cavity 21 of dress outer foot tube 7 is arranged at its top, the areola 22 of the flexible interior pipe 8 of dress is arranged at the bottom, in adjuster 2 cavitys briquetting 3 is housed, U-shaped card 4, one end of briquetting 3 has a plush copper 31, one circular hole is arranged on the plush copper, this circular hole links together by central shaft 5 and cam spanner 1, respectively there is a hole U-shaped card 4 both sides, link together by central shaft 5 and cam spanner 1 and briquetting 3 by this hole, briquetting 3 is positioned at the same side with cam spanner 1, with U-shaped card 4 is fixed support, and cam spanner 1 can rotate around central shaft 5, utilizes the eccentric structure of cam, rotatablely moving of cam 11 changed into the rectilinear motion of briquetting 3, move thereby promote briquetting 3, the other end of briquetting 3 be with stretch in the contact-making surface of pipe 8, with flexible in 8 the pipe face of managing be complementary;

Scheme two: compare with scheme 1, the characteristics of this programme are the offsides that briquetting 3 is installed on cam spanner 1, and the related components shape has been done some changes.This programme is by cam spanner 1, adjustment seat 2, briquetting 3, U-shaped card 4 and central shaft 5 are formed, see Fig. 7, adjustment seat 2 inside are cavity structure, the big cavity 21 of dress outer foot tube 7 is arranged at its top, the areola 22 of the flexible interior pipe 8 of dress is arranged at the bottom, described adjustment seat 2 one sides have a plush copper 23, one hole is arranged on the plush copper 23, plush copper 23 links together by central shaft 5 and cam spanner 1, briquetting 3 is positioned at the offside of cam spanner 1, is fixed support with U-shaped card 4, and cam spanner 1 can rotate around central shaft 5, respectively there is a hole U-shaped card 4 both sides, link together by central shaft 5 and cam spanner 1, briquetting 3 is contained on the bottom of U-shaped card 4, and briquetting 3 is positioned at adjustment seat 2, the end face of briquetting 3 is complementary with the pipe face of flexible interior pipe 8, when pulling cam spanner 1, utilize the off-centre of cam, tension U-shaped card 4 and briquetting 3, thereby compress flexible in pipe 8 and locking, vice versa.

In two above-mentioned schemes, can be both pipe by matching used outer foot tube 7 and flexible interior pipe 8, also can be both square tube, as long as the counterface with flexible interior pipe of the cavity up and down of adjustment seat and briquetting is done corresponding change, wherein the adjustment seat cavity has two kinds of sizes, the inside dimension of big cavity 21 and the outside dimension of outer foot tube 7 are tight fit, the inside dimension of areola 22 is a matched in clearance with the outside dimension of flexible interior pipe 8, and the inside dimension of outer foot tube 7 is movable the cooperation with the outside dimension of flexible interior pipe 8.

Because the utility model has utilized cam structure 11, by the cooperation of U-shaped card 4 and briquetting 3, thereby it is more simple to make revolving force and straight line force change structure mutually, locking effect is more firm, and do not hinder flexible in pipe.The utility model can be used for the pin pipe of bed, chair or the pin pipe height of other furniture is regulated.

Description of drawings

Fig. 1 is the locking state schematic perspective view of the utility model scheme one;

Fig. 2 is the locking state structure chart of the utility model scheme one;

Fig. 3 is the structure chart of the adjustment seat 2 of the utility model scheme one;

Fig. 4 is the structure chart of the U-shaped card 4 of the utility model scheme one;

Fig. 5 is the structure chart of the utility model scheme one cam spanner 1;

Fig. 6 is the structure chart of briquetting 3 in the utility model scheme one;

Fig. 7 is the locking state structure chart of the utility model scheme two;

Fig. 8 is the structure chart of adjustment seat 2 in the utility model scheme two;

Fig. 9 is the structure chart of briquetting 3 in the utility model scheme two.

The specific embodiment

Below by embodiment also in conjunction with the accompanying drawings, the utility model is further described in detail.

Embodiment 1: according to scheme one, briquetting 3 is placed the same side of cam spanner 1, utilizes the off-centre of cam to come mobile briquetting 3, thereby compress or loosen flexible in pipe 8, see Fig. 1 and Fig. 2; Adjustment seat 2 is the plastic cement injection mo(u)lding, there is cavity inside, its internal cavity has two kinds of sizes, the outer tube surface size of big cavity 21 and square outer foot tube 7 is a tight fit, and areola 22 and square flexible interior pipe 8 outer tube surface sizes are matched in clearance, and there is an opening 23 in the front, there are two strip gabs 24 at the back side, one square depression 25 is arranged between the strip gab 24, be used for tangling U-shaped card 4, see Fig. 3; U-shaped card 4 is for cold drawing strikes out U-shaped, and respectively there is a hole both sides, see Fig. 4; The dual-side of U-shaped card 4 penetrates by two strip gabs 24 at adjustment seat 2 back sides respectively, to adjustment seat 2 positive outlets, links together by central shaft 5 and cam spanner 1 and briquetting 3; Central shaft is a tubular rivet, and cam spanner 1 is the plastic cement moulding, and front end is a cam structure 11, and the cam middle part has groove 12, and the back is the spanner 13 that makes things convenient for people's hand operated, sees Fig. 5; Briquetting 3 is the plastic cement moulding, and an end has plush copper 31 and the arc depression 32 that matches with cam spanner 1, and a hole is arranged on the plush copper 31, and the other end is to compress end face 33 to match with the surface of flexible interior pipe 8, sees Fig. 6.Cam spanner 1 can rotate around central shaft 5, when cam spanner 1 is pulled up, structural principle according to cam off-centre, and the hole on the briquetting plush copper 31 is bigger, requisite space is provided for the lateral displacement of briquetting 3, thereby rotatablely moving of cam structure 11 changed into the rectilinear motion of briquetting 3, reach will be flexible in pipe 8 lockings or loosen.And because the height of the front openings 23 of adjustment seat 2 is greater than the height of U type card 4, so have a down dip on can be in the certain angle scope in the front openings 23 of U-shaped card 4 in adjustment seat 2, in flexible, manage under 8 situations about being compressed by briquetting 3, U-shaped card 4 can be along with managing 8 in flexible along its pipe direction suffered pressure or pulling force, automatically be adjusted into corresponding heeling condition by level, thereby strengthen the effect of locking, and reach the effect of two-sided locking, make that locking is more firm.Want to unclamp and regulate flexible interior pipe 8, then as long as cam spanner 1 is pulled off.

Embodiment 2: according to scheme two, briquetting 3 is placed the offside of cam spanner 1, utilizes the off-centre of cam, by U-shaped card 4 pulling briquettings 3 compress or loosen flexible in pipe 8, see Fig. 7.Adjustment seat 2 is the plastic cement injection mo(u)lding, see Fig. 8, its internal cavity has two kinds of sizes, the inside dimension of big cavity 21 and the outside dimension of square outer foot tube 7 are tight fit, and the outside dimension of the inside dimension of areola 22 and square flexible interior pipe 8 is a matched in clearance, and there is a plush copper 23 in the front of adjustment seat, one hole is arranged on the plush copper 23, plush copper 23 both sides are two side openings 24, and there is square breach 25 at the back side, as the activity space of briquetting 3; U-shaped card 4 strikes out U-shaped for cold drawing, respectively there is a hole both sides, promptly square breach 25 penetrates to the side opening 24 in adjustment seat 2 fronts the dual-side of U-shaped card 4 from the back side of adjustment seat 2, and link together by central shaft 5 and cam spanner 1, briquetting 3 is the plastic cement moulding, the front has and the flexible interior pipe 8 tension planes 31 of matching, there is a square elongated slot 32 at the back side, by this square elongated slot 32 and U-shaped card 4 tight fits, briquetting 3 is contained on the U-shaped card 4, briquetting 3 is spacing at square breach 25 places of adjustment seat 2, see Fig. 9; Central shaft is a tubular rivet, and cam spanner 1 is the plastic cement moulding, and front end is a cam structure 11, and the cam middle part has groove 12, and the back is the spanner 13 that makes things convenient for people's hand operated.Cam spanner 1 can rotate around central shaft 5, when cam spanner 1 is pulled up, cam spanner 1 is by its eccentric structural principle, and the hole on the adjustment seat plush copper 23 is bigger, for the lateral displacement of briquetting 3 and U-shaped card 4 provides requisite space, thereby rotatablely moving of cam structure 11 changed into the rectilinear motion of U-shaped card 4 and briquetting 3, reach the function of pipe 8 relative outer foot tube 7 tension lockings in will stretching, and because the height of the square breach 25 at adjustment seat 2 back sides is greater than the height of briquetting 3, so briquetting 3 has certain scope of activities together with U-shaped card 4 on adjustment seat 2, horizontal plane has a down dip in the certain angle scope relatively, in flexible, manage under 8 situations about being strained by cam structure 11, U-shaped card 4 can be along with managing 8 in flexible along its pipe direction suffered pressure or pulling force, automatically be adjusted into corresponding heeling condition by level, thereby strengthen the effect of locking, and reach the effect of two-sided locking, make that locking is more firm.Want to unclamp and regulate flexible interior pipe 8, then as long as cam spanner 4 is pulled off.

Claims

1. pin pipe expansion and cotraction regulator, form by cam spanner (1), adjustment seat (2), briquetting (3), U-shaped card (4) and central shaft (5), adjustment seat (2) inside is cavity structure, the big cavity (21) of dress outer foot tube (7) usefulness is arranged at its top, the areola (22) of flexible interior pipe (8) usefulness of dress is arranged at the bottom, it is characterized in that:

(a). in described adjustment seat (2) cavity briquetting (3) is housed, U-shaped card (4), briquetting (3) has a plush copper (31), one circular hole is arranged on the plush copper, this circular hole links together by central shaft (5) and cam spanner (1), respectively there is a hole U-shaped card (4) both sides, link together by central shaft (5) and cam spanner (1) and briquetting (3) by this hole, briquetting (3) is positioned at the same side with cam spanner (1), the other end of briquetting (3) is and the interior contact-making surface of managing (8) that stretches, be complementary with the pipe face of flexible interior pipe (8), with U-shaped card (4) is fixed support, cam spanner (1) can center on central shaft (5) and rotate, utilize the eccentric structure of cam, rotatablely moving of cam (11) changed into the rectilinear motion of briquetting (3), move thereby promote briquetting (3), make it to compress or loosen flexible in pipe (8);

(b). described adjustment seat (2) goes up the front a plush copper (23), plush copper has a hole on (23), plush copper (23) links together by central shaft (5) and cam spanner (1), and respectively there is a side opening (24) plush copper (23) both sides, and there is a square breach (25) at the back side; Respectively there is a hole U-shaped card (4) both sides, the dual-side of U-shaped card (4) promptly penetrates to the positive side opening (24) of adjustment seat (2) from the square breach in the back side (25) of adjustment seat (2), link together by central shaft (5) and cam spanner (1), briquetting (3) is contained on the bottom of U-shaped card (4), briquetting (3) is positioned at the square breach (25) at adjustment seat (2) back side, offside in cam spanner (1), the end face of briquetting (3) is complementary with the pipe face of flexible interior pipe (8), when pulling cam spanner (1), utilize the off-centre of cam, tension or loosen U-shaped card (4) and briquetting (3), thus compress or loosen flexible in pipe (8).

2. pin pipe expansion and cotraction regulator according to claim 1, it is characterized in that the adjustment seat (2) in described (a) money is the plastic cement injection mo(u)lding, there is an opening (23) in the front, there are two strip gabs (24) at the back side, one square depression (25) is arranged between the strip gab (24), be used for tangling U-shaped card (4); Described U-shaped card (4) is the cold drawing punch forming, respectively there is a hole both sides, the dual-side of U-shaped card (4) penetrates from two strip gabs (24) at adjustment seat (2) back side respectively, to the positive outlet (23) of adjustment seat (2), link together by central shaft (5) and cam spanner (1) and briquetting (3); Described briquetting (3) is the plastic cement moulding, and the one end has plush copper (31) and the arc depression (32) that matches with cam spanner (1), and plush copper has a hole on (31), and the other end is complementary with flexible interior surface of managing (8) for compressing end face (33).

3. pin pipe expansion and cotraction regulator according to claim 1, there is a plush copper (23) in the front that it is characterized in that the adjustment seat (2) in described (b) money, plush copper has a hole on (23), respectively there is a side opening (24) plush copper (23) both sides, there is square breach (25) at the back side, as the activity space of briquetting (3); Described U-shaped card (4) strikes out U-shaped for cold drawing, respectively there is a hole both sides, the dual-side of U-shaped card (4) promptly penetrates to the positive side opening (24) of adjustment seat (2) from the square breach in the back side (25) of adjustment seat (2), links together by central shaft (5) and cam spanner (1); Described cam spanner (1) is the plastic cement moulding, and front end is cam structure (11), and the cam middle part has groove (12), and the back is the spanner (13) that makes things convenient for people's hand operated; Described briquetting (3) is the plastic cement moulding, the front have and flexible in the tension end face (31) that matches of pipe (8), the back side has square elongated slot (32), is used for cooperating with U-shaped card (4) being installed on the U-shaped card (4).