CN102326932A

CN102326932A - Draw bar packback

Info

Publication number: CN102326932A
Application number: CN201110302727A
Authority: CN
Inventors: 林卫良
Original assignee: 林卫良
Current assignee: NINGBO ZHONGDI STEREO CASES MANUFACTURING CO., LTD.
Priority date: 2011-09-30
Filing date: 2011-09-30
Publication date: 2012-01-25
Anticipated expiration: 2031-09-30
Also published as: CN102326932B

Abstract

The invention relates to a draw bar packback comprising a draw bar sleeve arranged inside bottom of the packback, a draw bar arranged in the draw bar sleeve and packback belts arranged at the left side and right side of the packback, wherein the lower end of the draw bar is provided with a cross bar vertical to the draw bar, the left end part and right end part of the cross bar are respectively fixedly connected with the lower ends of the packback belts at the left side and the right side, the other ends of the packback belts at the left side and the right side respectively pass through lower packback belt holes at the bottoms of the left packback and the right packback and then passes through corresponding upper packback belt holes so as to be respectively clamped and fixed together with a left strap pin and a right strap pin, and the draw bar draws the cross bar while lengths of the packback belts arranged at the left side and the right side are released. The draw bar is used for pulling the cross bar and driving the packback belts to be attracted or released, the upper ends of the packback belts are connected with the upper packback belt holes by virtue of character buttons, the length of the packback belts can be regulated, and the abrasion and pollution caused by overlong external packback belts in a dragging and pulling process are avoided. The draw bar packback provided by the invention has the advantages of being beneficial to reduction of the volume and weight of the draw bar packback, being suitable for children to carry, being flexible and convenient to operate and being novel and fashion in appearance.

Description

The pull bar knapsack

Technical field

The present invention relates to a kind of knapsack, be specifically related to the pull bar knapsack that a kind of backpack band and pull bar are coordinated mutually.

Background technology

Can supply both shoulders back and the case and bag of drawing down at present, make things convenient for whilst on tour to carry more heavier article, can use rod-pulling type case and bag hauling to alleviate heavy burden, this pair of braces pull bar knapsack begins to be used by primary and secondary students, soon in the parents of student, promotes.But in use find the defective of many uses aspect gradually; For example; This knapsack is being placed on ground when dilatory, backpack strip can not shrink easily friction on the ground automatically makes the braces contamination wear, must take off or be banded on the knapsack for this reason; This lacks practicality to pupils not only complicacy but also loaded down with trivial details.

CN200620083242.2 proposes a kind of detachable children pull bar knapsack; Knapsack and pull bar are movably connected by double buckle, and the crossbeam that establish on pull bar top is fixed on the knapsack by the fixed band activity at the knapsack back side, are fixed on the knapsack when using pull bar; The time spent can not unloaded; The pull bar loading and unloading are much more complicated than backpack strip being taken off or is bundled on the knapsack, also lack practicality, this structure also is not suitable for students in middle and primary schools and uses.

Summary of the invention

The technical problem that the present invention will solve is to utilize pull bar when moving up and down, to drive the backpack strip folding and unfolding, reaches the elasticity of free adjustment backpack strip, to adapt to the needs that haul away on student or the both shoulders back of the body or the ground.

Design of the present invention is; The pull bar knapsack comprises knapsack, is located at the pull bar sleeve pipe of knapsack inside story face; Be located at pull bar and the backpack strip that is located at the knapsack left and right sides in the pull bar sleeve pipe; It is characterized in that said pull bar lower end establish one with the perpendicular cross bar of pull bar, the left and right end portions of said cross bar respectively with the backpack strip lower end Joint of left and right sides, the upper end of left and right sides backpack strip is respectively through with holes through corresponding last knapsack again behind the following backpack strip hole of knapsack bottom surface, the left and right sides; Fixing with left and right sides suspender clip chucking respectively, draw the length of putting the left and right sides backpack strip in the time of pull bar pulling cross bar.

Establish axial groove on the said pull bar sleeve pipe.

Establish the supporting seat of a tie-strut sleeve pipe in the said knapsack bottom surface.

Be connected fixing between said pull bar and the cross bar by crossbar mount.

Said backpack strip upper end is by day word button fastening and be stuck in a knapsack side with holes.

Described pull bar sleeve pipe and the rectangular tube of pull bar that is enclosed within the pull bar sleeve pipe for flattening.

Said knapsack outer bottom lower end is established one and is supported feet and the left and right sides roller that knapsack stands up.

The present invention compared with prior art has following advantage: the pull bar end is established cross bar, utilizes pull bar pulling cross bar and drives backpack strip and tighten up or loosen, and has four knapsacks with holes on the knapsack; The braces upper end is with holes through knapsack on day word buckle, and can regulate braces length through a day word button, and the backpack strip hole is connected on the cross bar and the bottom of braces is run through down; Braces and pull bar are connected as a single entity, under the bigger situation of BW, through the pull bar handle; In the process that pull bar elongates; Outside braces is drawn on the pull bar and is shortened, and makes knapsack dilatory on the ground, has avoided the wearing and tearing and the pollution that because outside braces is long braces are caused in the dilatory process.Pull bar and pull bar sleeve pipe help dwindling pull bar knapsack volume, weight reduction for flattening square tube; Be cheaper than children and carry, the day word of adjusting braces length is buckled and is hidden in inclusion inside, does not influence the attractive in appearance of knapsack; And under the situation that weight increases; The use pull bar is dilatory, flexible and convenient operation, the novel fashion of outward appearance.

Description of drawings

Fig. 1 is the internal structure cutaway view of pull bar knapsack of the present invention.

Fig. 2 is the side view of pull bar knapsack of the present invention.

Fig. 3 is the rearview of Fig. 1, and the expression pull bar is the pull-up state not.

Fig. 4 is the rearview of Fig. 1, and the expression pull bar is the pull-up state.

The specific embodiment

Fig. 1～2 are depicted as the knapsack upright state; Shown in Figure 1 is vertical view at the bottom of the case of pull bar knapsack; The upper end of pull bar 3 connects handle 1, and the pull bar 3 outer drag link sleeve pipes 4 that surround, pull bar casing shoe just knapsack inner bottom surface are established the supporting seat 8 of a tie-strut sleeve pipe 4; Pull bar sleeve pipe 4 is located at the centre of knapsack inside story face; The left and right sides of pull bar sleeve pipe 4 is established left and right sides backpack strip 6 respectively, goes up a side of knapsack with holes 2 about backpack strip 6 upper ends are stuck in, and the lower end of left and right sides backpack strip 6 is fastened on the left and right end portions of cross bar 5 respectively behind the following backpack strip hole 2 through correspondence.Connect in the middle of the lower end of pull bar 3 one with the perpendicular cross bar 5 of pull bar, be connected through rivet by crossbar mount 9 between cross bar 5 and the pull bar 3 and fix.Shown in Figure 2 is pull bar knapsack longitudinal section; When representing in pull bar 3 advances push rod tube 4 fully; Backpack strip 6 loosens fully; Can from about and corresponding up and down knapsack with holes 2 pull out, make the knapsack Braces hanged over tow shoulders, the suspender clip of said backpack strip upper end is with day word button 7 fastenings and be stuck in a side of knapsack with holes 2.Can buckle 7 according to the day word of human body needs adjusting backpack strip 6 upper ends, regulate the use length of backpack strip.Place state vertically for supporting knapsack, establish one in knapsack outer bottom lower end and support the feet 12 and left and right sides roller 11 that knapsack stands up.

Vertical view when Fig. 3 representes that pull bar 3 advances in the pull bar sleeve pipe 4 fully; Be the left view of Fig. 2, cross bar 5 is pushed to the hypomere of pull bar sleeve pipe 4, also promptly pushes the lower end of axial groove 13 to; Backpack strip 6 major parts can be pulled out outside the knapsack; As shown in Figure 2, pressing locking button 10 can be locked at pull bar 3 in the pull bar sleeve pipe, prevents that pull bar 3 from being dropped by vibration.

Shown in Figure 4ly be the vertical view of pull bar 3 when pulling out pull bar sleeve pipe 4 fully; Pull bar sleeve pipe 4 is the flattening rectangular tube of same axis with the pull bar 3 that is enclosed within the pull bar sleeve pipe 4; Pull bar 3 can be enclosed within pull bar sleeve pipe 4 pulling arbitrarily up and down; Be fixed on pull bar 3 terminal cross bars 5 and follow pull bar 3 upper and lower displacements, be illustrated in figure 4 as pull bar 3 and be pulled to the extreme higher position, backpack strip 6 is pulled to promptly strains backpack strip 6 in the case and bag along the axial groove 13 on the pull bar sleeve pipe 4; When case and bag are hauled away, can protect the not contaminated and wearing and tearing of backpack strip 6 on ground level.

Claims

1. pull bar knapsack; Comprise knapsack; Be located at the pull bar sleeve pipe of knapsack inside story face, be located at pull bar and the backpack strip that is located at the knapsack left and right sides in the pull bar sleeve pipe, it is characterized in that said pull bar lower end establish one with the perpendicular cross bar of pull bar; The left and right end portions of said cross bar respectively with the backpack strip lower end Joint of left and right sides; The upper end of left and right sides backpack strip is respectively through with holes through corresponding last knapsack again behind the following backpack strip hole of knapsack bottom surface, the left and right sides, and is fixing with left and right sides suspender clip chucking respectively, draws the length of putting the left and right sides backpack strip in the time of pull bar pulling cross bar.

2. pull bar knapsack according to claim 1 is characterized in that establishing on the said pull bar sleeve pipe (4) axial groove (13).

3. pull bar knapsack according to claim 1 is characterized in that establishing in the said knapsack bottom surface supporting seat (8) of a tie-strut sleeve pipe (4).

4. pull bar knapsack according to claim 1 is characterized in that being connected by crossbar mount (9) between said pull bar (3) and the cross bar (5) fixing.

5. pull bar knapsack according to claim 1 is characterized in that said backpack strip (6) upper end is by day word button (7) fastening and be stuck in the side in knapsack hole (2).

6. pull bar knapsack according to claim 1 is characterized in that said pull bar sleeve pipe (4) and is enclosed within the rectangular tube of pull bar (3) for flattening in the pull bar sleeve pipe.

7. pull bar knapsack according to claim 1 is characterized in that said knapsack outer bottom lower end establishes one and support feet (12) and the left and right sides roller (11) that knapsack stands up.