CN2202430Y

CN2202430Y - Draw rod for trunk with wheels

Info

Publication number: CN2202430Y
Application number: CN 94223139
Authority: CN
Inventors: 刘钢
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-29
Filing date: 1994-09-29
Publication date: 1995-07-05
Anticipated expiration: 2004-09-29

Abstract

The utility model discloses a draw rod for a trunk with wheels, comprising an external pipe with a screw thread segment which can be connected with the trunk, and a movable internal pipe which is sheathed in the external pipe, wherein, the top of the internal pipe is fixed on a handle. The utility model is characterized in that a positioning device which comprises radial through holes on the external pipe, the balls on the wall of the internal pipe, and a cone plunger piston with a saddle in the internal pipe is installed between the internal pipe and the external pipe; a regulating device comprises a spring whose both ends are respectively fixed on the plunger piston and the internal pipe, a center pole which is fixed on the plunger piston, a regulating rod which is connected with the center pole, and a spacing through hole which can limit the amount of the movement of the center pole. The utility model solves the problems that the positioning of the internal pipe of the draw rod is unreliable; the regulation of the length is troublesome, etc.

Description

Draw rod for trunk with wheels

The utility model relates to a kind of pull bar that is used for the case and bag of belt wheel.

The Travelling trunk pulling handle of existing belt wheel, comprised the hollow outer pipe that fuses with suitcase, the band handle of kink in outer tube interior pipe, on outer tube wall, install must pull piece with hand and just can compress or throw off inner tubal wall and maintain static the plastic cement piece that maybe can do telescopic moving with pipe in realizing.The shortcoming of this Travelling trunk pulling handle is: 1) compress the power that is produced with the plastic cement piece and can not strengthen automatically in the pull bar use, on the contrary, weaken along with the increase of wearing and tearing, the location of therefore interior pipe is unreliable; 2) must pull piece when adjusting pull bar length, regulating finishes still back pulls piece again, and it is not too convenient therefore to use.

The purpose of this utility model is to overcome the shortcoming that exists in the above-mentioned prior art, provides a kind of length of adjusting yoke easily and the Travelling trunk pulling handle of the belt wheel that in use can locate reliably.

The Travelling trunk pulling handle of the utility model belt wheel includes following structure and forms:

1) its bottom has thread segment, top that one section energy fuses by nut and packing ring and casing have the seam that can locate on casing hollow outer pipe;

2) pipe in handle hollow has been fixed at kink its top in outer tube;

3) positioner that pipe stopped on outer tube reliably in a cover can make; This device comprise row along the quantity of outer tube length direction setting be at least one group radial direction through hole, one group of its quantity of installing on the inner pipe wall equate with above-mentioned one group of radial direction through hole hole count and diameter greater than the ball of this through-hole aperture, in interior pipe, install can be with its taper seat pushing tow ball so that the conical plunger of the band saddle in the through-hole wall of ball embedding outer tube;

4) cover can change the adjusting device of pull bar length easily; This device includes its two ends and is fixed in spring on plunger and the interior pipe respectively, a center-pole that is fixed on the plunger, a limiting through hole that is arranged on the tube wall of interior pipe top, and one link into an integrated entity with center-pole, thereby make it can drive the adjusting rod that center-pole moves up and down in the length range that limiting through hole limited and be used for the support ball in case the saddle that it tumbles during bar downwards in regulating.

To and contrast accompanying drawing by embodiment below, the Travelling trunk pulling handle of the utility model belt wheel will be further described below.Have in the accompanying drawing:

Fig. 1 is its stereogram when using on casing;

Fig. 2 and Fig. 3 are respectively the stereogram of the Travelling trunk pulling handle of belt wheel at the band broken section behind the location and in adjustment process.

Pull bar of the present utility model can be seen from Fig. 2 and Fig. 3.Each casing has the identical pull bar of two root architectures simultaneously.Each root pull bar includes the outer tube 7 of threaded section 13 of a root bottom part, top band seam 6; The interior pipe 5 of handle 1 has been fixed at kink its top in outer tube; The positioner that combines by radial direction through hole 8, ball 10, plunger 9; By its two ends be separately fixed at the spring 12 of plunger and interior pipe bottom, on plunger affixed center-pole 4, manage in being arranged on and handle on the adjusting rod 2 that links into an integrated entity of limiting through hole 3, one and center-pole and plunger on the adjusting device that combines of the saddle 11 that has.

Radial direction through hole along the setting of outer tube length direction in the present embodiment has three row, that is to say, pull bar can adjust three kinds of different length; If columns increases, the utility model pull bar also can access more length specification.

Each group radial direction through hole quantity in the positioner is two, and the ball number on its inner tubal wall also is two, and ball diameter is slightly larger than the radial direction through hole aperture on the outer tube, can outwards not deviate from from through hole when being subjected to the plunger extruding to guarantee ball.Fig. 2 expresses the position relation of each assembly under the situation of location, wherein the circular hole wall little than ball diameter retrained ball on the outer wall of plunger 9 and the outer tube, if pipe is subjected to the effect of handle upper lifting force at this moment, then interior pipe has the trend that ball moves upward of carrying secretly, the extruding of the plunger conical surface that ball will be subjected to enlarging gradually, therefore go up handle (promptly spurring suitcase rolls forward), then the location is reliable more, pipe in use can not stretch again in that is to say, pull bar length can not change.

Fig. 3 expresses the position relation of each assembly when adjusting pull bar length.When adjusting the length of pull bar, must spur handle 1 and adjusting rod 2 simultaneously, make adjusting rod 2 arrive the top of limiting through hole 3, the plunger active force that overcome spring 12 moves up with center-pole this moment; Because diminishing of plunger cone diameter, the inside tube hub of ball bounces back and by saddle 11 supports; This moment inner and outer pipe between no any pining down, so interior pipe can be with drawing on the handle or press down and stretch out or the indentation outer tube.When choosing the length of pull bar, can be with the openhanded adjusting rod 2 of opening, at this moment interior pipe is under the handle pulling, ball on it will slip into a row radial direction through hole, meanwhile, plunger on the center-pole resets under the spring force effect, and the mutual alignment of assemblies such as plunger and ball returns to again under the positioning states of Fig. 2, and the length of pull bar again can be relatively stable.

From Fig. 1, can see that the outer tube of the utility model pull bar all is installed in the casing, and not need when walking pulling when suitcase, interior bar all can be pressed in the outer tube, at this moment only expose the seam of outer tube and handle, adjusting rod on the casing.Pulling then can be pulled out pipe in it if desired, the state when dotted line is represented its pulling among the figure.

The advantage of the Travelling trunk pulling handle of the utility model belt wheel is: 1) it is with reliable positioner, has guaranteed in use constant of pull bar length; 2) only with the hand of a pulling handle with regard to the length of capable of regulating pull bar and the location of finishing pull bar, so the speed of adjusting is fast and easy.

Claims

1, the Travelling trunk pulling handle of the belt wheel of a kind of outer tube (7) that includes threaded section (13) and seam (6), interior pipe (5) that handle (1) has been fixed at kink its top in outer tube, it is characterized in that it have a cover can make in the positioner that on outer tube, stops reliably of pipe and the cover adjusting device that can change pull bar length easily; Positioner can include: row along the quantity of outer tube length direction setting be at least one group radial direction through hole (8), one group of its quantity of installing on the inner tubal wall equate with above-mentioned one group of radial direction through hole hole count and diameter greater than the ball (10) of this through-hole aperture, in interior pipe, install can be with its taper seat pushing tow ball so that the conical plunger (9) of the band saddle (11) in the through-hole wall of ball embedding outer tube; Adjusting device can include: its two ends be fixed in respectively spring (12) on plunger and the interior pipe, one be fixed in center-pole (4) on the plunger, one be arranged on the tube wall of pipe top limiting through hole (3) thereby, one link into an integrated entity with center-pole and to make its adjusting rod (2) that can drive center-pole and in the length range that limiting through hole limited, move up and down, be used for the support ball downwards in adjusting in case the saddle (11) that it tumbles during bar.