CN219229241U

CN219229241U - Draw bar knapsack with freely-contractible knapsack belt

Info

Publication number: CN219229241U
Application number: CN202221695924.4U
Authority: CN
Inventors: 朱振磊
Original assignee: Shandong Leiwei Outdoor Products Co ltd
Current assignee: Shandong Leiwei Outdoor Products Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2023-06-23
Anticipated expiration: 2032-07-01

Abstract

The utility model discloses a freely-contractible pull rod knapsack with a knapsack belt, and relates to the technical field of pull rod backpacks. According to the utility model, the pressing bar is pressed to enable the pawl to slide on the supporting rod until the pawl is separated from the surface of the ratchet wheel, the knob is rotated to drive the ratchet wheel, the winding drum and the central shaft to rotate, so that the backpack belt in the interior is extended, the pressing bar is loosened, the spring is elastically deformed to generate elasticity, the pawl returns to the original position, the length fixing is completed, the problems that the length of the backpack belt of the existing part of pull rod backpack is fixed, the use is inconvenient and the use mode of the pull rod backpack is limited are solved, the length of the backpack belt is freely adjusted, and the use convenience is improved.

Description

Draw bar knapsack with freely-contractible knapsack belt

Technical Field

The utility model relates to the technical field of pull rod backpacks, in particular to a pull rod backpack with freely-contractible backpack straps.

Background

The utility model provides a pull rod package, knapsack with pull rod is fit for going out office, travel usefulness, shows the gas matter, and fashion, unique, pull rod package also has and designs for 2-16 year old generation children, and from child's view, creates children's favorite schoolbag, and the case carrying handle is mostly working of plastics, and the case pull rod is mostly scalable, presses down lock button repeatedly stretching several times during the selection, and the pull rod should stretch out and draw back freely, and the fit clearance of dead lever and telescopic link should be moderate, and the volume of expanding can not be too big to have following problem to prior art:

1. in the prior art, the pull rod knapsack can be pulled on the ground in the use process, when the road surface is uneven, the pull is laborious, the pull rod knapsack can be severely jolted, the pull rod knapsack frequently impacts when going up and down stairs, and the service life of the pull rod knapsack is reduced;

2. the pull rod knapsack of the prior art is a dual-purpose knapsack, can be pulled and carried, has fixed knapsack belt length of the existing part pull rod knapsack, is inconvenient to use in some cases, limits the use mode of the pull rod knapsack, and is too short for some people with large body size and high height.

Disclosure of Invention

The utility model provides a draw bar backpack with freely retractable backpack straps, which solves the problems in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a draw bar knapsack that knapsack belt can freely shrink, includes draw bar knapsack body, one side fixedly connected with of draw bar knapsack body is shouldered, the lower extreme fixedly connected with telescopic strap mechanism of shouldered, telescopic strap mechanism includes the ratchet, one side fixedly connected with reel of ratchet.

The outer surface of the telescopic strap mechanism is fixedly connected with one side of the pull rod knapsack body, and the lower side of the pull rod knapsack body is fixedly connected with a vibration reduction plate mechanism.

The vibration reduction plate mechanism comprises a vibration reduction wheel mechanism, the vibration reduction wheel mechanism comprises a turnover steel sheet, and a connecting shaft is fixedly arranged in the middle of the axis of the turnover steel sheet.

The technical scheme of the utility model is further improved as follows: the spool is characterized in that a central shaft is fixedly arranged in the middle of the axis of the spool, the middle of the axis of the central shaft is fixedly arranged in the middle of the ratchet wheel, one end of the central shaft is fixedly connected with a knob, and the outer surface of the knob is provided with an anti-skid groove.

The technical scheme of the utility model is further improved as follows: the outer surface of center pin rotates and is connected with flexible casing, the inner wall of flexible casing overlaps with one side of reel and one side of ratchet, the inside fixedly connected with bracing piece of flexible casing.

The technical scheme of the utility model is further improved as follows: the outer surface sliding connection of bracing piece has the pawl, one side fixedly connected with of pawl presses the strip, the outside of pawl and the outside joint of ratchet, the opposite side fixedly connected with spring one of pawl, the other end and the inner wall fixed connection of flexible casing of spring one.

The technical scheme of the utility model is further improved as follows: the outer surface fixedly connected with elastic ball of connecting axle, the outer surface fixedly connected with spring two of connecting axle, turn over the outside fixedly connected with pipeline of steel sheet, the inner wall of pipeline and the outer surface of elastic ball and the other end fixed connection of spring two, the both ends rotation of connecting axle are connected with the gyro wheel, the surface fixedly connected with friction strip of gyro wheel.

The technical scheme of the utility model is further improved as follows: the outer surface of vibration reduction wheel mechanism fixed mounting has the bottom plate, one side fixedly connected with foam-rubber cushion of bottom plate, the inside fixedly connected with vibration reduction strip mechanism of bottom plate.

The technical scheme of the utility model is further improved as follows: the vibration reduction strip mechanism comprises an elastic ellipsoid, the lower end of the elastic ellipsoid is fixedly connected with a movable cylinder, the upper end of the elastic ellipsoid is fixedly connected with a connecting column, the outer surface of the connecting column is in sliding connection with the inside of the movable cylinder, the lower side of the connecting column is fixedly connected with a spring III, and the lower end of the spring III is fixedly connected with the bottom surface of the inner cavity of the movable cylinder.

By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:

1. the utility model provides a draw bar knapsack with freely contractible knapsack straps, which adopts a telescopic shell, a supporting rod, a first spring, a pawl, a pressing bar, an anti-slip groove, a knob, knapsack straps, a ratchet wheel, a winding drum and a central shaft to be matched, the pawl slides on the supporting rod until the pawl is separated from the surface of the ratchet wheel by pressing the pressing bar, the knob is rotated to drive the ratchet wheel, the winding drum and the central shaft to rotate, so that the inside knapsack straps are stretched, the pressing bar is loosened, the first spring elastically deforms to generate elasticity, the pawl returns to the original position, the fixation of the length is completed, the problem that the knapsack straps of the existing part draw bar knapsack are inconvenient to use in some cases and the use mode of the draw bar knapsack is limited is solved, the length of the knapsack straps is freely adjusted according to the situation, and the use convenience is improved.

2. The utility model provides a freely contractible pull rod knapsack, which adopts a bottom plate, a foam-rubber cushion, a pipeline, a turnover steel sheet, elastic balls, a spring II, a connecting shaft, rollers, friction strips, a connecting column, a movable barrel, a spring III and elastic ellipsoids to be matched, wherein the friction force is increased by the friction strips when the rollers rotate, the stability is improved, the two turnover steel sheets increase the elastic restoring force of an internal structure, the three groups of springs II cushion and reduce jolting in dragging, the four elastic balls support and buffer shaking in the pipeline, the connecting column slides in the movable barrel, the spring III and the elastic ellipsoids are compressed to deform to generate elasticity, the elasticity belongs to reaction force, the up-down vibration is counteracted, the problem that the serious jolting condition occurs when the pull rod knapsack is solved, the problem of collision frequently occurs when the pull rod knapsack is up-down stairs, and the effects of reducing the jolting degree of the rolling of wheels and the destructive force when the wheels collide are achieved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of the inside of the telescopic belt mechanism of the present utility model;

FIG. 3 is a schematic view of the structure of the damper plate mechanism of the present utility model;

FIG. 4 is a schematic cross-sectional view of a damper wheel mechanism according to the present utility model;

FIG. 5 is a schematic view of the structure of the inside of the vibration damping strip mechanism of the present utility model.

In the figure: 1. a pull rod backpack body;

2. a shoulder strap;

3. a telescopic belt mechanism; 31. a telescoping housing; 32. a support rod; 33. a first spring; 34. a pawl; 35. pressing the strip; 36. an anti-skid groove; 37. a knob; 38. a backpack strap; 39. a ratchet wheel; 310. a reel; 311. a central shaft;

4. a vibration damping plate mechanism; 41. a bottom plate; 42. a vibration reduction wheel mechanism; 421. a pipe; 422. turning over the steel sheet; 423. a spring ball; 424. a second spring; 425. a connecting shaft; 426. a roller; 427. a friction bar; 43. a sponge cushion; 44. a vibration damping bar mechanism; 441. a connecting column; 442. a movable cylinder; 443. a third spring; 444. an elastic ellipsoid.

Detailed Description

The utility model is further illustrated by the following examples:

example 1

As shown in fig. 1-5, the utility model provides a draw-bar knapsack with freely retractable knapsack belt, which comprises a draw-bar knapsack body 1, wherein one side of the draw-bar knapsack body 1 is fixedly connected with a shoulder belt 2, the lower end of the shoulder belt 2 is fixedly connected with a telescopic belt mechanism 3, the telescopic belt mechanism 3 comprises a ratchet wheel 39, one side of the ratchet wheel 39 is fixedly connected with a winding drum 310, the outer surface of the telescopic belt mechanism 3 is fixedly connected with one side of the draw-bar knapsack body 1, the lower side of the draw-bar knapsack body 1 is fixedly connected with a vibration-damping plate mechanism 4, the vibration-damping plate mechanism 4 comprises a vibration-damping wheel mechanism 42, the vibration-damping wheel mechanism 42 comprises a turnover steel sheet 422, and the middle part of the axle center of the turnover steel sheet 422 is fixedly provided with a connecting shaft 425.

In this embodiment, by providing the telescopic strap mechanism 3, the extension, shortening and fixing of the backpack strap are adjusted in a ratchet wheel rotation manner, the usage manner is improved, the vibration reduction wheel mechanism 42 is provided to cope with various usage environments, the jolt degree during rolling is reduced, the vibration reduction bar mechanism 44 is provided to buffer and reduce the destructive force during impact, and the vibration reduction plate mechanism 4 is provided to improve the stability of the dragging process.

Example 2

As shown in fig. 1-5, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, a central shaft 311 is fixedly installed in the middle of the axis of the winding drum 310, the middle of the axis of the central shaft 311 is fixedly installed in the middle of the ratchet wheel 39, one end of the central shaft 311 is fixedly connected with a knob 37, an anti-slip groove 36 is formed in the outer surface of the knob 37, the outer surface of the central shaft 311 is rotationally connected with a telescopic shell 31, the inner wall of the telescopic shell 31 is overlapped with one side of the winding drum 310 and one side of the ratchet wheel 39, a supporting rod 32 is fixedly connected with the inner side of the telescopic shell 31, a pawl 34 is slidably connected with the outer surface of the supporting rod 32, a pressing bar 35 is fixedly connected with one side of the pawl 34, the outer side of the pawl 34 is clamped with the outer side of the ratchet wheel 39, a first spring 33 is fixedly connected with the other side of the pawl 34, and the other end of the first spring 33 is fixedly connected with the inner wall of the telescopic shell 31.

In this embodiment, by pressing the pressing bar 35, the pawl 34 slides on the support rod 32 until the pawl 34 is separated from the surface of the ratchet wheel 39, and rotating the knob 37, the ratchet wheel 39, the winding drum 310 and the central shaft 311 are driven to rotate, so that the backpack strap 38 inside is stretched, the pressing bar 35 is loosened, the first spring 33 is elastically deformed to generate elasticity, so that the pawl 34 returns to the original position, the fixing of the length is completed, the problem that the backpack strap length of the existing part of pull rod backpack is fixed, the use is inconvenient in some cases, the use mode of the pull rod backpack is limited is solved, the length of the backpack strap is freely adjusted according to the situation, and the use convenience is improved.

Example 3

As shown in fig. 1-5, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the elastic ball 423 is fixedly connected to the outer surface of the connecting shaft 425, the spring II 424 is fixedly connected to the outer surface of the connecting shaft 425, the pipeline 421 is fixedly connected to the outer surface of the turnover steel sheet 422, the inner wall of the pipeline 421 is fixedly connected to the outer surface of the elastic ball 423 and the other end of the spring II 424, the rollers 426 are rotatably connected to the two ends of the connecting shaft 425, the friction strips 427 are fixedly connected to the outer surface of the rollers 426, the bottom plate 41 is fixedly mounted on the outer surface of the vibration reduction wheel mechanism 42, the sponge cushion 43 is fixedly connected to one side of the bottom plate 41, the vibration reduction strip mechanism 44 is fixedly connected to the inner portion of the bottom plate 41, the vibration reduction strip mechanism 44 comprises an elastic ellipsoid 444, the lower end of the elastic ellipsoid 444 is fixedly connected to the movable cylinder 442, the upper end of the elastic ellipsoid 444 is fixedly connected to the connecting column 441, the outer surface of the connecting column 441 is in sliding connection with the inner cavity bottom surface of the movable cylinder 442, the lower side of the connecting column 441 is fixedly connected to the spring III 443.

In this embodiment, the friction bar 427 is used to increase the friction force of the roller 426 during rotation, so as to improve stability, the two folding steel sheets 422 are used to increase elastic restoring force of the internal structure, the three groups of springs II 424 are used to buffer and reduce jolt during dragging, the four elastic balls 423 are supported and buffer to shake inside the pipeline 421, the connecting column 441 slides inside the movable cylinder 442, the three springs 443 and the elastic ellipsoid 444 are compressed, so that the three springs 443 and the elastic ellipsoid 444 deform to generate elastic force, the elastic force belongs to reacting force, and the up-down vibration is counteracted, so that the problem that the tie rod knapsack is severely jolt when the tie rod is on uneven road surface, and the problem of collision is frequently caused when the tie rod is on stairs, so as to achieve the effect of reducing jolt degree of rolling wheels and destructive force when the tie rod is bumped.

The working principle of the freely retractable draw bar backpack with the backpack strap is specifically described below.

As shown in fig. 1-5, when the draw bar backpack with freely retractable backpack strap is used, the pressing bar 35 is pressed, so that the pawl 34 slides on the supporting rod 32 until the pawl 34 is separated from the surface of the ratchet wheel 39, the knob 37 is rotated to drive the ratchet wheel 39, the winding drum 310 and the central shaft 311 to rotate, so that the backpack strap 38 in the backpack strap is stretched, the pressing bar 35 is loosened, the first spring 33 is elastically deformed to generate elastic force, so that the pawl 34 returns to the original position, the fixing of the length is completed, the friction bar 427 increases the friction force when the roller 426 rotates, the stability is improved, the second turnover steel sheet 422 increases the elastic restoring force of the inner structure, the third spring 424 group buffers and reduces jolting in dragging, the fourth elastic ball 423 supports and buffers shaking in the pipeline 421, the connecting column 441 slides in the movable drum 442, the third 443 and the elastic ellipsoid 444 are compressed, so that the elastic force generated by deformation generates elastic force, and the elastic force belongs to the reaction force, and the up-down vibration is counteracted.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims

1. The utility model provides a freely collapsible pull rod knapsack of knapsack area, includes pull rod knapsack body (1), its characterized in that: one side of the pull rod backpack body (1) is fixedly connected with a shoulder strap (2), the lower end of the shoulder strap (2) is fixedly connected with a telescopic strap mechanism (3), the telescopic strap mechanism (3) comprises a ratchet wheel (39), and one side of the ratchet wheel (39) is fixedly connected with a winding drum (310);

the outer surface of the telescopic belt mechanism (3) is fixedly connected with one side of the pull rod knapsack body (1), and the lower side of the pull rod knapsack body (1) is fixedly connected with a vibration reduction plate mechanism (4);

the vibration reduction plate mechanism (4) comprises a vibration reduction wheel mechanism (42), the vibration reduction wheel mechanism (42) comprises a turnover steel sheet (422), and a connecting shaft (425) is fixedly arranged in the middle of the axle center of the turnover steel sheet (422).

2. A tie-bar backpack with freely retractable backpack strap according to claim 1, wherein: the novel spool is characterized in that a central shaft (311) is fixedly arranged in the middle of the axis of the spool (310), the middle of the axis of the central shaft (311) is fixedly arranged in the middle of the ratchet wheel (39), one end of the central shaft (311) is fixedly connected with a knob (37), and the outer surface of the knob (37) is provided with an anti-slip groove (36).

3. A tie-bar backpack with freely retractable backpack strap according to claim 2, wherein: the outer surface of center pin (311) rotates and is connected with flexible casing (31), the inner wall of flexible casing (31) overlap joint with one side of reel (310) and one side of ratchet (39), the inside fixedly connected with bracing piece (32) of flexible casing (31).

4. A tie-bar backpack with freely retractable backpack strap according to claim 3, wherein: the outer surface sliding connection of bracing piece (32) has pawl (34), one side fixedly connected with of pawl (34) presses strip (35), the outside of pawl (34) and the outside joint of ratchet (39), the opposite side fixedly connected with spring (33) of pawl (34), the other end and the inner wall fixed connection of flexible casing (31) of spring (33).

5. A tie-bar backpack with freely retractable backpack strap according to claim 1, wherein: the outer surface fixedly connected with elasticity ball (423) of connecting axle (425), the outer surface fixedly connected with spring two (424) of connecting axle (425), the outside fixedly connected with pipeline (421) of turning over steel sheet (422), the inner wall of pipeline (421) and the outer surface of elasticity ball (423) and the other end fixed connection of spring two (424), the both ends rotation of connecting axle (425) are connected with gyro wheel (426), the outer surface fixedly connected with friction strip (427) of gyro wheel (426).

6. A tie-bar backpack with freely retractable backpack strap according to claim 1, wherein: the outer surface of damping wheel mechanism (42) is fixed mounting has bottom plate (41), one side fixedly connected with foam-rubber cushion (43) of bottom plate (41), the inside fixedly connected with damping strip mechanism (44) of bottom plate (41).

7. A tie-bar backpack with freely retractable backpack strap of claim 6, wherein: the vibration reduction strip mechanism (44) comprises an elastic ellipsoid (444), the lower end of the elastic ellipsoid (444) is fixedly connected with a movable cylinder (442), the upper end of the elastic ellipsoid (444) is fixedly connected with a connecting column (441), the outer surface of the connecting column (441) is in sliding connection with the inside of the movable cylinder (442), the lower side of the connecting column (441) is fixedly connected with a third spring (443), and the lower end of the third spring (443) is fixedly connected with the bottom surface of an inner cavity of the movable cylinder (442).