CN215456085U

CN215456085U - Telescopic pull rod knapsack

Info

Publication number: CN215456085U
Application number: CN202121450091.0U
Authority: CN
Inventors: 陈少锋
Original assignee: Fujian Quanzhou Fengtai Clothing Co ltd
Current assignee: Fujian Quanzhou Fengtai Clothing Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-11
Anticipated expiration: 2031-06-29

Abstract

The utility model relates to the technical field of pull rod backpacks, in particular to a telescopic pull rod backpack which comprises a backpack, a pull rod telescopic device, straps and rubber sleeves, wherein the pull rod telescopic device with a folding and unfolding function is arranged on one side of the backpack, two groups of straps are arranged in the pull rod telescopic device, and the straps are equidistantly provided with the rubber sleeves; when the pull rod moves, the pull rod drives the ratchet wheel to rotate through the through hole, the ratchet wheel enables the straps to move through the matching effect of the ratchet wheel teeth and the rubber sleeve, and therefore the straps are collected into the folding and unfolding box body along with the movement of the pull rod, the straps are tightened, the tightened straps are straightened and are parallel to the folding and unfolding box body, the straps cannot contact with the ground when the backpack is dragged, and the straps are prevented from being soiled.

Description

Telescopic pull rod knapsack

Technical Field

The utility model relates to the technical field of pull rod backpacks, in particular to a telescopic pull rod backpack.

Background

The backpack refers to a general name of a bag carried on the back when going out or marching. The material is diversified, and fashion trends are led by cases made of genuine leather, plastic materials, terylene, canvas, nylon, cotton, hemp and other textures. The style of the case is also expanded from the traditional business bag, schoolbag and traveling bag to the pen bag, change purse, small perfume bag and the like.

The pull rod backpack is a dual-purpose bag which can be carried on the back and also can be pulled, but the existing pull rod backpack still has defects, straps of the existing pull rod backpack are mostly of fixed structures, and the straps can be dragged on the ground without length adjustment when the backpack is pulled, so that the straps are easy to twist into rollers and are polluted by dust and the like on the ground, and the straps are damaged.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a retractable backpack, which solves the above problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: a telescopic pull rod backpack comprises a backpack, a pull rod telescopic device, straps and rubber sleeves, wherein the pull rod telescopic device with a folding and unfolding function is arranged on one side of the backpack, two groups of straps are arranged in the pull rod telescopic device, and the straps are equidistantly provided with the rubber sleeves;

the pull rod telescopic device comprises a folding and unfolding box body, the folding and unfolding box body is fixedly connected with a backpack, two groups of guide box bodies are symmetrically arranged on one side of the folding and unfolding box body, two groups of grooves are formed in the side walls of the guide box bodies and the side walls of the folding and unfolding box body, two groups of first shafts are arranged in the folding and unfolding box body, two groups of ratchet wheels are symmetrically connected to the first shafts, two groups of bearings are symmetrically arranged at two ends of the first shafts, the bearings are embedded into the folding and unfolding box body, and the guide box bodies are connected with a pull rod mechanism.

Preferably, the pull rod mechanism comprises a cross rod, the cross rod is symmetrically connected with two groups of pull rods, a plurality of through holes are formed in the pull rods at equal intervals, one end of each pull rod is fixedly connected with a guide block, a sliding groove is formed in each guide block, a guide pillar is arranged in each sliding groove along the central line, a spring is sleeved on each guide pillar, two groups of vertical bearings are symmetrically arranged at two ends of each guide pillar, and each vertical bearing is embedded into a hole groove in each clamping block.

Preferably, two groups of ratchet wheels are symmetrically distributed on two sides of the strap, ratchet wheel teeth on the ratchet wheels are matched and connected with the rubber sleeve, and the sponge pad is arranged on one side of the folding and unfolding box body.

Preferably, the through hole is matched with ratchet teeth on the connecting ratchet wheel.

Preferably, the guide block is connected with the guide box body in a matching way.

Preferably, fixture block one end is the hemisphere, and fixture block one end cooperation connecting groove.

Compared with the prior art, the utility model has the beneficial effects that:

1. when the backpack needs to be dragged, the backpack is pressed, the cross rod is pulled, the cross rod drives the guide blocks to move along the inner wall of the guide box body through the pull rod, meanwhile, the guide blocks move to enable the guide box body and the folding and unfolding box body to extrude two groups of guide blocks, the guide blocks linearly retreat under the matching action of the guide columns and the upright bearings, and the springs are compressed until one ends of the guide blocks slide into the corresponding grooves under the action of the rebounding force of the springs, so that the stretched pull rod is fixed, and people can conveniently drag the backpack;

2. when the pull rod moves, the pull rod drives the ratchet wheel to rotate through the through hole, the ratchet wheel enables the straps to move through the matching effect of the ratchet wheel teeth and the rubber sleeve, and therefore the straps are collected into the folding and unfolding box body along with the movement of the pull rod, the straps are tightened, the tightened straps are straightened and are parallel to the folding and unfolding box body, the straps cannot contact with the ground when the backpack is dragged, and the straps are prevented from being soiled.

Drawings

FIG. 1 is a side cross-sectional view of the structure of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a combination view of the storage box and the guiding box of the present invention.

In the figure: 1. a backpack; 2. a pull rod telescopic device; 3. a harness; 4. a rubber sleeve; 201. a box body is collected and placed; 202. a guiding box body; 203. a groove; 204. a ratchet wheel; 205. a first shaft; 206. a pull rod mechanism; 2061. a cross bar; 2062. a pull rod; 2063. a through hole; 2064. a guide block; 2065. a chute; 2066. a clamping block; 2067. a guide post; 2068. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a telescopic pull rod backpack comprises a backpack 1, a pull rod telescopic device 2, straps 3 and rubber sleeves 4, wherein the pull rod telescopic device 2 with a folding function is arranged on one side of the backpack 1, two sets of straps 3 are arranged in the pull rod telescopic device 2, a plurality of rubber sleeves 4 are arranged at equal distances on the straps 3, a pull rod mechanism 206 comprises a cross rod 2061, the cross rod 2061 is symmetrically connected with the two sets of pull rods 2062, a plurality of through holes 2063 are arranged at equal distances on the pull rod 2062, one end of the pull rod 2062 is fixedly connected with a guide block 2064, a chute 5 is arranged in the guide block 2064, a guide post 2067 is arranged along the central line in the chute 2065, a spring 2068 is sleeved on the guide post 2067, two sets of vertical bearings are symmetrically arranged at two ends of the guide post 2067, the vertical bearings are embedded in a hole groove arranged in a clamping block 2066, the guide block 2064 is matched and connected with a guide box body 202, one end of the clamping block 2066 is hemispherical, one end of the clamping block 2066 is matched and connected with a groove 203, wherein when the backpack 1 needs to be pulled, the cross rod 2061 is pulled, the cross rod 2061 drives the guide block 2064 to move along the inner wall of the guide box body 202 through the pull rod 2062, meanwhile, the guide block 2064 moves, so that the guide box body 202 and the folding and unfolding box body 201 extrude two groups of guide blocks 2064, the guide blocks 2064 linearly retreat under the matching action of the guide post 2067 and the vertical bearing, and the spring 2068 is compressed until one end of the guide block 2064 slides into the corresponding groove 203 under the action of the rebounding force of the spring 2068, so that the pulled pull rod 2062 is fixed, and people can pull the backpack 1 conveniently;

further, the draw bar telescoping device 2 comprises a retraction box 201, the retraction box 201 is fixedly connected with the backpack 1, two sets of guide box 202 are symmetrically arranged on one side of the retraction box 201, two sets of grooves 203 are respectively arranged on the side walls of the guide box 202 and the retraction box 201, two sets of first shafts 205 are arranged in the retraction box 201, two sets of ratchet wheels 204 are symmetrically connected on the first shafts 205, two sets of bearings are symmetrically arranged at two ends of the first shafts 205, the bearings are embedded in the retraction box 201, the guide box 202 is connected with a draw bar mechanism 206, two sets of ratchet wheels 204 are symmetrically distributed on two sides of the shoulder strap 3, ratchet teeth on the ratchet wheels 204 are matched and connected with the rubber sleeve 4, through holes 2063 are matched and connected with ratchet teeth on the ratchet wheels 204, a sponge pad is arranged on one side of the retraction box 201, when the draw bar 2062 moves, the draw bar 2062 drives the ratchet wheels 204 to rotate through the matching action of the ratchet wheels 204 and the rubber sleeve 4, so that the shoulder strap 3 moves along with the draw bar 2062, thereby, the shoulder straps 3 are tightened, the tightened shoulder straps 3 are straightened and are parallel to the storage box body 201, when the backpack 1 is dragged, the shoulder straps 3 can not contact the ground, and the shoulder straps 3 are prevented from being polluted.

The working principle is as follows: in the using process, when the backpack 1 needs to be dragged, the backpack 1 is pressed, the cross rod 2061 is pulled, the cross rod 2061 drives the guide block 2064 to move along the inner wall of the guide box body 202 through the pull rod 2062, meanwhile, the guide blocks 2064 move, so that the guide box body 202 and the storage box body 201 extrude two groups of guide blocks 2064, the guide blocks 2064 linearly retreat under the matching action of the guide posts 2067 and the vertical bearings, and compresses the spring 2068 until, under the action of the spring 2068, one end of the guide block 2064 slides into the corresponding groove 203, so that the pulled pull rod 2062 is fixed, and at the same time, when the pull rod 2062 moves, the pull rod 2062 drives the ratchet 204 to rotate through the through hole 2063, the ratchet 204 moves the shoulder strap 3 through the matching action of the ratchet teeth and the rubber sleeve 4, so that the shoulder strap 3 moves along with the pull rod 2062 and is collected into the collecting and releasing box body 201, thereby, the shoulder straps 3 are tightened, and the tightened shoulder straps 3 are straightened and are parallel to the storage box 201.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a telescopic pull rod knapsack, includes knapsack (1), pull rod telescoping device (2), braces (3), rubber sleeve (4), its characterized in that: a pull rod telescopic device (2) with a retracting function is arranged on one side of the backpack (1), two groups of braces (3) are arranged in the pull rod telescopic device (2), and a plurality of rubber sleeves (4) are arranged on the braces (3) at equal intervals;

the pull rod telescopic device (2) comprises a folding box body (201), the folding box body (201) is fixedly connected with a backpack (1), two groups of guide box bodies (202) are symmetrically arranged on one side of the folding box body (201), two groups of grooves (203) are formed in the side walls of the guide box bodies (202) and the folding box body (201), two groups of first shafts (205) are arranged in the folding box body (201), two groups of ratchet wheels (204) are symmetrically connected on the first shafts (205), two groups of bearings are symmetrically arranged at two ends of the first shafts (205), the bearings are embedded into the folding box body (201), and a pull rod mechanism (206) is connected with the guide box bodies (202).

2. The retractable pole backpack of claim 1, wherein: the pull rod mechanism (206) comprises a cross rod (2061), the cross rod (2061) is symmetrically connected with two groups of pull rods (2062), a plurality of through holes (2063) are formed in the pull rod (2062) at equal intervals, one end of each pull rod (2062) is fixedly connected with a guide block (2064), a sliding groove (2065) is formed in each guide block (2064), a guide pillar (2067) is arranged in each sliding groove (2065) along the central line, a spring (2068) is sleeved on each guide pillar (2067), two groups of upright bearings are symmetrically arranged at two ends of each guide pillar (2067), and the upright bearings are embedded into the hole grooves formed in the corresponding clamp blocks (2066).

3. The retractable pole backpack of claim 1, wherein: two groups of ratchet wheels (204) are symmetrically distributed on two sides of the shoulder strap (3), ratchet wheel teeth on the ratchet wheels (204) are matched and connected with the rubber sleeve (4), and a sponge pad is arranged on one side of the folding and unfolding box body (201).

4. The retractable pole backpack of claim 2, wherein: the through hole (2063) is matched with ratchet teeth on the ratchet wheel (204).

5. The retractable pole backpack of claim 2, wherein: the guide block (2064) is matched and connected with the guide box body (202).

6. The retractable pole backpack of claim 2, wherein: one end of the clamping block (2066) is hemispherical, and one end of the clamping block (2066) is matched with the connecting groove (203).