Controlling handle structure for pull rods of a luggage

A controlling handle structure for pull rods of a luggage, including a handle member having a receptacle, a lower base received in the receptacle of the handle member and having a chamber and a controlling mechanism received in the chamber of the lower base. The controlling mechanism includes a first linking arm which is connected with a press button at one end and has an engaging section at the other end, and a second linking arm having an engaging section opposite to and engaged with the engaging section of the first linking arm, wherein the press button is depressably received in the through hole of the handle member to pivotally drive the first linking arm which reversely pivotally drives the second linking arm, whereby locking members disposed below the first and second linking arms are simultaneously moved to lock the pull rods.

BACKGROUND OF THE INVENTION 
The present invention relates to a controlling handle structure for pull 
rods of a luggage, and more particularly to a controlling handle structure 
which enables a user to easily simultaneously lock/unlock the pull rods on 
both sides of the luggage by one pressing movement. 
Taiwanese Utility Model Application No. 82210282 (Publication No. 227101) 
discloses an improved pull rod structure of a luggage. In such pull rod 
structure, several shortcomings existing in the conventional device have 
been eliminated. However, there are still some problems existing in such 
pull rod structure. Especially, for example, as shown in FIG. 1, a 
clearance is defined between an inner tube 11 and an outer tube 12 so that 
when a handle A of the pull rod structure 1 is pulled upward and pushed 
downward, the inner tube 11 will be biased against the outer tube 12. 
Therefore, after a long period of use, the clearance between the inner and 
outer tubes 11, 12 will be enlarged to make the pull rod structure unable 
to be reliably locked. 
SUMMARY OF THE INVENTION 
It is therefore a primary object of the present invention to provide a 
controlling handle structure for pull rods of a luggage, which includes a 
handle member, a lower base received in the handle member and a 
controlling mechanism received in the lower base. The controlling 
mechanism includes a first linking arm and a second linking arm drivingly 
engaged with the first linking arm, whereby a user can depress a press 
button received in a through hole of the handle member to pivotally drive 
the first linking arm which reversely pivotally drives the second linking 
arm, so as to simultaneously move two locking members disposed below the 
linking arms to lock the pull rods on both sides of the luggage.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
Please refer to FIG. 2. The present invention mainly includes a handle 
member 2, a lower base 3, a controlling mechanism 4, a pair of rod means 
5, a pair of driving means 6 and a pair of locating sleeves 7. Each of the 
rod means 5 includes a rod member 51, a compression spring 52 and a fixing 
seat 53 for the spring 52. Each of the locating sleeves 7 is formed with 
several locating holes 71. Each of the driving means 6 includes a 
triangular pushing block 61, a locking member 62, an extension spring 63, 
a pad member 64, a fixing sleeve 66 and a fixing plate 65. 
The handle member 2 is formed with a receptacle 21, a lateral through hole 
22 and apertures. The lower base 3 is formed with a chamber 31 and 
apertures 311. 
The controlling mechanism 4 is disposed in the chamber 31 of the lower base 
3, including a first linking arm 41 which is connected with a press button 
43 at one end and has an engaging section 411 at the other end, and a 
second linking arm 42 having an engaging section 421 opposite to and 
engaged with the engaging section 411 of the first linking arm 41. The 
first and second linking arms 41, 42 are formed with through holes 412, 
422, whereby rivets B can be passed through the apertures of the handle 
member 2, apertures 311 of the lower base 3 and the through holes 411, 422 
of the linking arms 41, 42 to pivotably connect the same with the handle 
member 2 and the lower base 3. 
Please refer to FIG. 3. When assembled, the controlling mechanism 4 and the 
lower base 3 are fitted into the receptacle 21 of the handle member 2 with 
the press button 43 extending through the through hole 22 of the handle 
member 2. Also, the press button 43 and a lower face of the second linking 
arm 42 abut against top ends of the rod members 51 received in the 
locating sleeves 7. The lower end of the rod members 51 are connected with 
the pushing blocks 61, locking members 62 and the extension springs 63. 
Please refer to FIG. 4. When the press button 43 is pressed down, the first 
linking arm 41 is pivoted about the rivet B and through the engaging 
sections 411, 421, the second linking arm 42 is driven and reversely 
pivoted, whereby the driving means 6 are moved downward with the pushing 
blocks 61 pushing the locking members 62 outward from the locating holes 
of the locating sleeves 7. Reversely, when the press button 43 is 
released, the compression spring 53 restores the press button 63 as well 
as the pushing blocks 61 to their home positions and the extension springs 
63 restores the locking members 62 to their original locking positions as 
shown in FIG. 3. 
The above embodiment is only an example of the present invention and the 
scope of the present invention should not be limited to the example. Any 
modification or variation derived from the example should fall within the 
scope of the present invention.