CN2875148Y

CN2875148Y - Central rod of multiple-folding umbrella

Info

Publication number: CN2875148Y
Application number: CN 200620054547
Authority: CN
Inventors: 黄禄财
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-24
Filing date: 2006-01-24
Publication date: 2007-03-07
Anticipated expiration: 2016-01-24

Abstract

A multi-folding umbrella medium bar provided is composed of a plurality of aluminum pipes which shrink on each other from inside to outside according to their caliber sizes. At the diameter-changing end located at the juncture of two adjacent pipes, the cross section of the diameter-changing end of an internal pipe (2) with a comparatively smaller caliber size expands to be the enlarging part of the internal pipe (2), and the cross section of the diameter-changing end of an external pipe (1) with a comparatively larger smaller caliber size shrinks to be the shrinking part (11) of the external pipe (1). The enlarge part of the internal pipe (2) comes into being through fixing a copper sleeve (3) at the end of the internal pipe (2), with the external wall of the copper sleeve (3) in a sliding matching with the internal wall of the external pipe (1). The external diameter of the copper sleeve (3) is slightly larger than the inner diameter of the shrinking part (11) of the external pipe (1). The copper sleeve (3) is made of copper. The multi-folding umbrella medium bar in the utility model can shorten the length of the shrinking part greatly so as to make the umbrella medium bar nicer and enjoys a smoother umbrella opening and folding owing to the small friction of the walls of pipes.

Description

Rod in many folding umbrellas

Technical field

The utility model relates to the member of en-toutcas, relates in particular to a kind of middle rod of multi-bended en-toutcas.

Background technology

The middle rod of more existing many folding umbrellas, connection between its more piece body adopts the bigger outer tube of caliber to dwindle at cohesive end, the snap fit that the less interior pipe of caliber enlarges at cohesive end, as application number is 02227707.2, name is called the Chinese utility model patent of " being used for automatically opening the rod of receiving many folding umbrellas ", wherein Bang structure as shown in Figure 1, the interior pipe 5 and the outer tube 6 that comprise the slip socket, wherein, the top of interior pipe 5 is provided with the expansion section 51 that enlarges outward, the bottom of its outer tube 6 then forms the portion 61 that dwindles toward interior contraction, when rod in the umbrella launches fully, described expansion section 51 be stuck in the portion of dwindling 61 places prevent in pipe deviate from.Adopt rod in the umbrella of this structure, it dwindles portion 61 and need do longlyer, like this in rod just be unlikely to rock when launching severity too, rod looks not too attractive in appearance in the umbrella but make like this.In addition, in order to alleviate the weight of umbrella, rod adopts the aluminum material of light weight mostly in the umbrella, and frictional force is bigger when sliding relatively between the interior pipe of aluminium matter and the outer tube, parachute-opening and feel smooth and easy inadequately when closing one's umbrella.

The utility model content

The technical problems to be solved in the utility model is to provide a kind of portion that dwindles short and open rod in the many smoothly folding umbrellas of receipts.

The technical scheme in the invention for solving the above technical problem is, manufacture and design rod in a kind of many folding umbrellas, form according to the flexible successively from outside to inside fit of caliber size by more piece aluminum pipe body, the 2-section pipe body of described adjacent socket is in the reducing end of its linking, the cross section of the reducing end of the interior pipe that caliber is less relatively expands outwardly the shape with the bigger body cross section of caliber that coincide, form the expansion section of pipe in this, the cross section at the outer tube reducing place that caliber is big inwardly shrinks the shape with the cross section of the little interior pipe of caliber that coincide, form the portion that dwindles of this outer tube, the utility model special feature is: the expansion section of pipe is by a fixedly sleeved copper sheathing forms in the end of interior pipe in described, the inner tubal wall face of the outside wall surface of this copper sheathing and described outer tube is slidingly matched, frictional force between the two is less, and the external diameter of copper sheathing is slightly larger than the internal diameter that outer tube dwindles portion.Can shorten the length that outer tube dwindles portion greatly thus.

The reducing end of pipe is provided with the expansion port that the described copper sheathing of restriction outwards moves in described.

The outer wall of described copper sheathing is concordant with the outer wall of the expansion port of described interior pipe.

The length of described copper sheathing is 10 to 20 millimeters.

Pipe offers locating hole with the tube wall of copper sheathing socket place in described, and described copper sheathing and this locating hole corresponding position are provided with stamping forming interior recess, and recess just in time snaps in the described locating hole copper sheathing is fixed in this.

Compare with prior art, the utility model is rolled in the umbrella excellent at the convergence part of interior pipe overcoat one copper sheathing more, can effectively avoid producing when rod launches in the umbrella and rock, and can shorten the length that outer tube dwindles portion greatly thus, and rod is more attractive in appearance in making; In addition, the frictional resistance between copper sheathing and the aluminium matter outer tube is less, and it is smooth and easy to make umbrella open receipts.

Description of drawings

Fig. 1 is the structural representation of rod in existing many folding umbrellas;

Fig. 2 rolls over the structural representation of the outer tube 1 of rod in the umbrella more for the utility model;

Fig. 3 rolls over the structural representation of the interior pipe 2 of rod in the umbrella more for the utility model;

Fig. 4 be when rod launches in the umbrella described in structural representation between pipe 2 and the outer tube 1;

Fig. 5 is the enlarged drawing of copper sheathing 3 and interior pipe 2 junctions.

The specific embodiment

Be described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing.

Rod in many folding umbrellas of the present utility model, form according to the flexible successively from outside to inside fit of caliber size by two joints or above aluminum pipe body, as Fig. 2 and shown in Figure 4, in the end that the 2-section pipe body of adjacent socket is connected, the reducing place cross section of the outer tube 1 that caliber is big inwardly shrinks the shape with little interior pipe 2 cross sections of caliber that coincide, and forms the portion that dwindles 11 of this outer tube.As Fig. 3 or shown in Figure 4, cohesive end external stability socket one copper sheathing 3 of the interior pipe 2 that described caliber is little and the expansion section of pipe 2 in forming, this copper sheathing 3 is positioned at outer tube 1, the shape of cross section of its shape of cross section and interior pipe 2 matches, its external diameter is slightly larger than that outer tube 1 dwindles the internal diameter of portion 11 but the internal diameter that is slightly less than outer tube 1, the inner tubal wall face of the outside wall surface of copper sheathing 3 and aluminium matter outer tube 1 is slidingly matched, and frictional force between the two is less, makes umbrella open the time receiving and feels very smooth and easy.When rod launched in the umbrella, described copper sheathing 3 was stuck in the portion that dwindles 11 places of outer tube and can not deviates from, and the slit between the inwall of copper sheathing 3 outer walls and outer tube 1 is very little, can effectively prevent to produce when rod launches in the umbrella to rock.

The cohesive end of pipe 2 can adopt following two kinds of versions in described:

One, direct fixedly sleeved described copper sheathing 3 the linking end of interior pipe 2 outside need not internally to manage 2 ends and do the enlarging processing, can reduce operation.

Two, as shown in Figure 3, the reducing terminal part of pipe 2 enlarges outward and forms the expansion port 21 that the described copper sheathing 3 of restriction outwards moves in described, described copper sheathing 3 is positioned at the below of this expansion port 21, its apical margin is near the bottom of expansion port 21, its outer wall is concordant with the outer wall of expansion port 21, the height of copper sheathing 3 is 10 to 20 millimeters, and this structure makes copper sheathing 3 be not easy to break away from interior pipe 2, uses comparatively reliable.

As shown in Figure 5, on pipe 2 in copper sheathing 3 is fixed on, offer locating hole 23 on the tube wall of pipe 2 and copper sheathing 3 socket places in described, be provided with stamping forming interior recess 31 with these locating hole 23 corresponding positions on described copper sheathing 3 sidewalls, recess 31 just in time is pressed in this locating hole 22 copper sheathing 3 is fixed in being somebody's turn to do, and also can adopt other fixed form.

Claims

1, rod in a kind of many folding umbrellas, form according to the flexible successively from outside to inside fit of caliber size by more piece aluminum pipe body, the 2-section pipe body of described adjacent socket is in the reducing end of its linking, the cross section of the reducing end of the interior pipe (2) that caliber is less relatively expands outwardly the shape with the bigger body cross section of caliber that coincide, form the expansion section of pipe (2) in being somebody's turn to do, the cross section at the outer tube that caliber is big (1) reducing place inwardly shrinks the shape with the cross section of the little interior pipe (2) of caliber that coincide, form the portion that dwindles (11) of this outer tube (1), it is characterized in that: the expansion section of pipe (2) is by forming at the fixedly sleeved copper sheathing in the end of interior pipe (2) (3) in described, the inner tubal wall face of outside wall surface of this copper sheathing (3) and described outer tube (1) is slidingly matched, and its external diameter is slightly larger than the internal diameter that outer tube (1) dwindles portion (11).

2, rod in many folding umbrellas according to claim 1, it is characterized in that: the reducing terminal part of pipe (2) is provided with the expansion port (21) that the described copper sheathing of restriction (3) outwards moves in described.

3, rod in many folding umbrellas according to claim 2, it is characterized in that: the outer wall of described copper sheathing (3) is concordant with the outer wall of the expansion port (21) of described interior pipe (2).

4, rod in many folding umbrellas according to claim 1 and 2, it is characterized in that: the length of described copper sheathing (3) is 10 to 20 millimeters.

5, rod in many folding umbrellas according to claim 1 and 2, it is characterized in that: pipe (2) offers locating hole (23) with the tube wall of copper sheathing (3) socket place in described, described copper sheathing (3) is provided with stamping forming interior recess (31) with this locating hole (23) corresponding position, and recess (31) just in time snaps in the described locating hole (22) in this.