CN214483569U

CN214483569U - Schoolbag with changeable volume

Info

Publication number: CN214483569U
Application number: CN202120645781.5U
Authority: CN
Inventors: 钱有才
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-10-26
Anticipated expiration: 2031-03-30

Abstract

The utility model discloses a schoolbag with changeable volume. The utility model discloses, including the main tank body, the top of main tank body is sewed up and is connected with folding box one, the bottom of main tank body is sewed up and is connected with folding box two, the front side fixedly connected with double toothed plate of main tank body, the surface that is close to the top on the double toothed plate is fixedly connected with the fold department of folding box one, the top fixedly connected with handle of double toothed plate, the bottom swing joint of folding box one has drag device, the spacing sliding connection of inner wall of double toothed plate has the bracing piece, the bottom and the drag device fixed connection of bracing piece, the tooth meshing on the double toothed plate has the gear, the tooth meshing that is far away from double toothed plate one side on the gear has the pinion rack; the problem of in the in-service use, because increased inside placing space among the traditional device, but when placing object article increase the condition, the weight of schoolbag has also increased, has inconvenient carrying is solved.

Description

Schoolbag with changeable volume

Technical Field

The utility model relates to a schoolbag technical field specifically is a schoolbag that can change volume size.

Background

The schoolbag refers to a bag made of cloth, leather and the like. The student is used for carrying textbooks and stationery. Traditional schoolbag is certain when using inside place the space, and is more and more when user's thing, the use of inconvenient schoolbag, although suitcase on the market increases inside area of placing through the cooperation of connecting cloth and zip fastener, can only increase to the biggest area like this, can not moderate the regulation according to the demand.

Therefore for solving above-mentioned problem, people provide a student's schoolbag convenient to adjust inside space of placing, as the student's schoolbag convenient to adjust inside space of placing that CN201922217665.9 disclosed, place box, braces and vice box of placing including the owner, the owner places the left surface of box and sews up and is connected with the braces, and the owner places the upper and lower left and right sides of box and all sews up and be connected with first snap-fastener to the main right side of placing the box is sewed up and is fixed with the connection box, the right-hand member of connecting the box is sewed up and is connected with the baffle, and the right flank of baffle is sewed up and is fixed with vice box of placing, and all sews up about the left side of baffle and install the connecting plate, the medial surface of connecting plate is sewed up and is fixed with the second snap-fastener.

However, in practical use, although the internal placing space is increased in the conventional device, when the number of placed articles is increased, the weight of the schoolbag is also increased, and the schoolbag is inconvenient to carry.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can change the schoolbag of volume size, the volume size that not only can change the schoolbag that possesses can also push-and-pull, and the problem of proposing in the background art has been solved to the advantage that conveniently carries when placing object article is more.

In order to achieve the above object, the utility model provides a following technical scheme: a schoolbag with a changeable volume comprises a main box body, wherein the top of the main box body is connected with a first folding box body in a sewing mode, the bottom of the main box body is connected with a second folding box body in a sewing mode, a double-face toothed plate is fixedly connected to the front side of the main box body, the surface, close to the top, of the double-face toothed plate is fixedly connected with a fold part of the first folding box body, and the top of the double-face toothed plate is fixedly connected with a handle;

the bottom of the first folding box body is movably connected with a dragging device, the inner wall of the double-face toothed plate is in limit sliding connection with a supporting rod, the bottom of the supporting rod is fixedly connected with the dragging device, teeth on the double-face toothed plate are meshed with a gear, teeth on one side, far away from the double-face toothed plate, of the gear are meshed with a toothed plate, the surface, close to the bottom, of the toothed plate is fixedly connected with a fold part of the second folding box body, a connecting rod is arranged in the double-face toothed plate, the surface of the connecting rod penetrates through the handle, the bottom of the connecting rod is fixedly connected with a connecting plate, the bottom of the connecting plate is fixedly connected with a fixing column, the surface of the fixing column is movably connected with the supporting rod and the inner wall of the double-face toothed plate, the side face of the connecting plate is movably connected with a push rod, the surface of the push rod penetrates through the handle and is in sliding connection with the handle, and the surface of the handle is provided with a sliding groove, the inner wall fixedly connected with spring of spout, the top of spring and the bottom fixed connection of push rod.

Preferably, the dragging device comprises a bottom plate, universal wheels, fixing rods and a mounting belt, the bottom of the second folding box body is movably connected with the bottom plate, the universal wheels are arranged at the bottom of the bottom plate, the fixing rods are fixedly connected to the top of the bottom plate, the mounting belt is movably connected to the surface of the fixing rods, and the inner side of the mounting belt is connected with the front side of the main box body in a sewing mode.

Preferably, the number of the gears is two, and the gears are rotatably connected with the front side of the main case.

Preferably, a rectangular groove is formed in the surface of the supporting rod, a rectangular column is fixedly connected to the surface of the connecting rod, the front side of the rectangular column is fixedly connected with the inner wall of the double-sided toothed plate, and the surface of the rectangular column is in limited sliding connection with the inner wall of the rectangular groove.

Preferably, the surface of the handle is provided with anti-skid grains.

Preferably, be provided with a plurality of damping device on the bottom plate, damping device includes flexible groove, air vent, damping spring, T type piece, flexible groove has been seted up on the surface of bottom plate, the air vent runs through to the bottom plate lower surface from flexible tank bottom, the bottom fixedly connected with damping spring in flexible groove, damping spring's top fixedly connected with T type piece, the top of T type piece and the bottom swing joint of folding box two.

Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model discloses a folding box one that sets up, folding box two, double-face toothed plate, the handle, the bracing piece, the gear, the cooperation between the pinion rack, the pulling handle drives double-face toothed plate upwards slides on the bracing piece, tooth meshing gear on the double-face toothed plate drives the gear and rotates, and then drives pinion rack relative gear downstream for folding box one upwards expandes along with double-face toothed plate's removal, folding box two expandes downwards along with the removal of pinion rack, realize collapsible flexible, change the volume size of schoolbag.

Through setting up the dilatory device for can conveniently carry when article are more.

Through the connecting rod that sets up, the connecting plate, the fixed column, the push rod, the spout, the cooperation between the spring, because the connecting rod, the push rod can be along with double toothed plate rebound, drive the connecting plate, fixed column rebound, pass the through-hole on the bracing piece as the fixed column, and when the inner wall contact with double toothed plate, can realize the locking of double toothed plate and bracing piece, through setting up the spring, make the push rod receive the elastic force effect of spring down to keep steady state, do not contact with the side of connecting plate, realize the locking. Make the push-and-pull that the schoolbag can be stable, when needs adjust schoolbag volume size, can press the top of push rod and make the spring extruded, the relative connecting rod of push rod moves down, when the bottom of push rod contacts with the side of connecting plate, can make the connecting plate move to the inboard, and then drives the fixed column and move to the inboard for the fixed column breaks away from the contact with double toothed plate and bracing piece, realizes adjustable flexible.

Through the cooperation of above-mentioned isotructure, solved in the in-service use process, because increased inside placing space among the traditional device, but under the condition that the placing object article increase, the weight of schoolbag has also increased, has the inconvenient problem of carrying.

Drawings

FIG. 1 is a sectional view of the present invention;

FIG. 2 is a rear view of the structure of the present invention;

FIG. 3 is an enlarged view of the point A of FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the point B in FIG. 1 according to the present invention;

FIG. 5 is a rear view of the rectangular post of the present invention;

fig. 6 is a sectional view of the damping device of the present invention.

In the figure: 1. a main box body; 2. folding the first box body; 21. a second folding box body; 3. a double toothed plate; 4. a handle; 5. a support bar; 51. a rectangular groove; 6. a gear; 7. a toothed plate; 8. a connecting rod; 81. a rectangular column; 9. a connecting plate; 10. fixing a column; 11. a push rod; 12. a chute; 13. a spring; 14. a base plate; 15. a universal wheel; 16. fixing the rod; 17. mounting a belt; 18. a telescopic groove; 181. a vent hole; 182. a damping spring; 183. and a T-shaped block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides a technical solution: the utility model provides a can change schoolbag of volume size, includes the main tank body 1, the top of main tank body 1 is sewed up and is connected with folding box 2, the bottom of main tank body 1 is all sewed up and is connected with folding box two 21, the front side fixedly connected with double toothed plate 3 of main tank body 1, the surface that is close to the top on double toothed plate 3 and the fold department fixed connection of folding box 2, double toothed plate 3's top fixedly connected with handle 4, the spacing sliding connection of inner wall of double toothed plate 3 has bracing piece 5, rectangular channel 51 has been seted up on the surface of bracing piece 5, the fixed surface of connecting rod 8 is connected with rectangular column 81, the front side of rectangular column 81 and double toothed plate 3's inner wall fixed connection, the surface of rectangular column 81 and the spacing sliding connection of inner wall of rectangular channel 51.

The bottom of the supporting rod 5 is fixedly connected with a dragging device, the teeth on the double-sided toothed plate 3 are meshed with a gear 6, the teeth on the gear 6 far away from one side of the double-sided toothed plate 3 are meshed with a toothed plate 7, the surface of the toothed plate 7 close to the bottom is fixedly connected with the fold part of the folding box body II 21, the inner wall of the double-sided toothed plate 3 is in limited sliding connection with the supporting rod 5, the bottom of the supporting rod 5 is fixedly connected with the dragging device, the teeth on the double-sided toothed plate 3 are meshed with the gear 6, the teeth on the gear 6 far away from one side of the double-sided toothed plate 3 are meshed with the toothed plate 7, the surface of the toothed plate 7 close to the bottom is fixedly connected with the fold part of the folding box body II 21, through the matching between the arranged folding box body I2, the folding box body II 21, the double-sided toothed plate 3, the handle 4, the supporting rod 5, the gear 6 and the toothed plate 7, the pulling handle 4 drives the double-sided toothed plate 3 to slide upwards on the supporting rod 5, and the surface of the handle 4 is provided with anti-slip grains, increased frictional force for the user is more laborsaving when pulling handle 4, and difficult slippage, tooth meshing gear 6 on the double toothed plate 3 drives gear 6 and rotates, and then drives 6 downstream of the relative gear of pinion rack 7, makes folding box 2 upwards expand along with the removal of double toothed plate 3, and folding box two 21 is along with the downward expansion of the removal of pinion rack 7, and the quantity of gear 6 is two, and gear 6 rotates with the front side of main tank 1 to be connected. Through setting up two gears 6 for it is more balanced to control the atress, makes folding flexible more convenient of folding box two 21, finally realizes collapsible flexible, changes the volume size of schoolbag.

The bottom of the first folding box body 2 is movably connected with a dragging device, the dragging device comprises a bottom plate 14, universal wheels 15, fixing rods 16 and a mounting belt 17, the bottom of the second folding box body 21 is movably connected with the bottom plate 14, the universal wheels 15 are arranged at the bottom of the bottom plate 14, the fixing rods 16 are fixedly connected to the top of the bottom plate 14, the surface of the fixing rods 16 is movably connected with the mounting belt 17, and the inner side of the mounting belt 17 is connected with the front side of the main box body 1 in a sewing mode. Through setting up bottom plate 14, dead lever 16, for main tank 1 provides the support, through setting up universal wheel 15, can realize that the removal of schoolbag is carried, through setting up installation area 17 for main tank 1 realizes fixedly with dead lever 16, makes more stable during the push-and-pull, is difficult for dropping, through setting up dilatory device, makes can conveniently carry when article are more.

Be equipped with connecting rod 8 in double-sided toothed plate 3, handle 4 is run through on the surface of connecting rod 8, and rectangular channel 51 has been seted up on the surface of bracing piece 5, the fixed surface of connecting rod 8 is connected with rectangular column 81, the front side of rectangular column 81 and double-sided toothed plate 3's inner wall fixed connection, rectangular column 81's the surface and the spacing sliding connection of inner wall of rectangular channel 51, when bracing piece 5 drove connecting rod 8 and carry out horizontal migration, rectangular channel 51 slides relative rectangular column 81, through the sliding fit between rectangular channel 51 and the rectangular column 81, can restrict the activity orbit of connecting rod 8. Bottom fixedly connected with connecting plate 9 of connecting rod 8, the bottom fixedly connected with fixed column 10 of connecting plate 9, the surface of fixed column 10 and the inner wall swing joint of bracing piece 5 and double-sided pinion rack 3, the side swing joint of connecting plate 9 has push rod 11, handle 4 is run through on the surface of push rod 11, and with 4 sliding connection of handle, spout 12 has been seted up on the surface of handle 4, the inner wall fixedly connected with spring 13 of spout 12, the top of spring 13 and the bottom fixed connection of push rod 11. Through the connecting rod 8 that sets up, connecting plate 9, fixed column 10, push rod 11, spout 12, cooperation between spring 13, because connecting rod 8, push rod 11 can be along with double toothed plate 3 rebound, drive connecting plate 9, fixed column 10 rebound, pass the through-hole on the bracing piece 5 as fixed column 10, and during the inner wall contact with double toothed plate 3, can realize double toothed plate 3 and bracing piece 5's locking, through setting up spring 13, make push rod 11 receive spring 13's elasticity effect down to keep stable state, do not contact with the side of connecting plate 9, realize the locking. Make the push-and-pull that the schoolbag can be stable, when needs adjust schoolbag volume size, can press the top of push rod 11 and make spring 13 extruded, push rod 11 relative connecting rod 8 moves down, when the bottom of push rod 11 and the side contact of connecting plate 9, can make connecting plate 9 move to the inboard, and then drive fixed column 10 and move to the inboard for fixed column 10 breaks away from the contact with double toothed plate 3 and bracing piece 5, realizes adjustable flexible.

Be provided with a plurality of damping device on the bottom plate 14, damping device includes flexible groove 18, air vent 181, damping spring 182, T type piece 183, flexible groove 18 has been seted up on the surface of bottom plate 14, air vent 181 runs through to bottom plate 14 lower surface from flexible groove 18 bottom, the bottom fixedly connected with damping spring 182 of flexible groove 18, damping spring 182's top fixedly connected with T type piece 183, the top of T type piece 183 and the bottom swing joint of two 21 folding boxes. Through setting up damping device, can support schoolbag atress problem completely, avoid books in the schoolbag to crush the pull rod when overweight, and avoided producing easy great noise at dilatory in-process.

The working principle is as follows: this but during the schoolbag of variable volume size used, pulling handle 4 drives double toothed plate 3 upwards slides on bracing piece 5, and tooth meshing gear 6 on double toothed plate 3 drives gear 6 and rotates, and then drives 6 downstream of the relative gear of pinion rack 7 for folding box 2 upwards expandes along with double toothed plate 3's removal, and folding box two 21 expandes along with pinion rack 7's removal downwards, realizes collapsible flexible, changes the volume size of schoolbag. The double-face toothed plate 3 drives the connecting rod 8, the connecting plate 9, the fixing column 10 and the push rod 11 to move upwards, the fixing column 10 penetrates through a through hole in the supporting rod 5 and contacts with the inner wall of the double-face toothed plate 3, locking of the double-face toothed plate 3 and the supporting rod 5 can be achieved, and the spring 13 enables the push rod 11 to be kept in a stable state under the elastic force action of the spring 13 and does not contact with the side face of the connecting plate 9, and locking is achieved. When schoolbag volume size is adjusted to needs, can press the top of push rod 11 and make spring 13 extruded, push rod 11 moves down relative to connecting rod 8, when the bottom of push rod 11 and the side contact of connecting plate 9, can make connecting plate 9 move to the inboard, and then drives fixed column 10 and move to the inboard for fixed column 10 breaks away from the contact with double toothed plate 3 and bracing piece 5, realizes adjustable flexible. The problem of in the in-service use, because increased inside placing space among the traditional device, but when placing object article increase the condition, the weight of schoolbag has also increased, has inconvenient carrying is solved.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a schoolbag of changeable volume size, includes main box body (1), its characterized in that: the top of the main box body (1) is connected with a first folding box body (2) in a sewing mode, the bottom of the main box body (1) is connected with a second folding box body (21) in a sewing mode, a double-face toothed plate (3) is fixedly connected to the front side of the main box body (1), the surface, close to the top, of the double-face toothed plate (3) is fixedly connected with a fold part of the first folding box body (2), and the top of the double-face toothed plate (3) is fixedly connected with a handle (4);

the bottom of the first folding box body (2) is movably connected with a dragging device, the inner wall of the double-face toothed plate (3) is connected with a supporting rod (5) in a limiting sliding mode, the bottom of the supporting rod (5) is fixedly connected with the dragging device, a plurality of through holes are formed in the surface of the supporting rod (5), teeth on the double-face toothed plate (3) are meshed with a gear (6), teeth on one side, far away from the double-face toothed plate (3), of the gear (6) are meshed with a toothed plate (7), the surface, close to the bottom, of the toothed plate (7) is fixedly connected with a fold position of the second folding box body (21), a connecting rod (8) is arranged in the double-face toothed plate (3), the surface of the connecting rod (8) penetrates through the handle (4), the bottom of the connecting rod (8) is fixedly connected with a connecting plate (9), and the bottom of the connecting plate (9) is fixedly connected with a fixing column (10), the surface of fixed column (10) and the inner wall swing joint of bracing piece (5) and double toothed plate (3), the side swing joint of connecting plate (9) has push rod (11), handle (4) is run through on the surface of push rod (11), and with handle (4) sliding connection, spout (12) have been seted up on the surface of handle (4), the inner wall fixedly connected with spring (13) of spout (12), the top of spring (13) and the bottom fixed connection of push rod (11).

2. A volume-changeable book bag according to claim 1, wherein: the dragging device comprises a bottom plate (14), universal wheels (15), fixing rods (16) and a mounting belt (17), the bottom of the second folding box body (21) is movably connected with the bottom plate (14), the universal wheels (15) are arranged at the bottom of the bottom plate (14), the fixing rods (16) are fixedly connected to the top of the bottom plate (14), the mounting belt (17) is movably connected to the surface of the fixing rods (16), and the inner side of the mounting belt (17) is connected with the front side of the main box body (1) in a sewing mode.

3. A volume-changeable book bag according to claim 1, wherein: the number of the gears (6) is two, and the gears (6) are rotationally connected with the front side of the main box body (1).

4. A volume-changeable book bag according to claim 1, wherein: rectangular channel (51) have been seted up on the surface of bracing piece (5), the fixed surface of connecting rod (8) is connected with rectangle post (81), the front side of rectangle post (81) and the inner wall fixed connection of double toothed plate (3), the surface of rectangle post (81) and the spacing sliding connection of inner wall of rectangular channel (51).

5. A volume-changeable book bag according to claim 1, wherein: the surface of the handle (4) is provided with anti-skid grains.

6. A variable volume bag as defined in claim 2, wherein: be provided with a plurality of damping device on bottom plate (14), damping device includes flexible groove (18), air vent (181), damping spring (182), T type piece (183), flexible groove (18) have been seted up on the surface of bottom plate (14), air vent (181) run through to bottom plate (14) lower surface from flexible groove (18) bottom, the bottom fixedly connected with damping spring (182) of flexible groove (18), the top fixedly connected with T type piece (183) of damping spring (182), the top of T type piece (183) and the bottom swing joint of folding box two (21).