阅读说明：本技术 一种具有折叠式轮子的手推车的结构 (Structure of handcart with foldable wheels ) 是由 严能进 于 2019-11-25 设计创作，主要内容包括：本发明是一种具有折叠式轮子的手推车的结构,包括支架、脚架、折叠轮组、连接柱、底架、折叠铲板、限位板和螺丝,其特征是：所述的支架的支架主体下端的缺口槽连接脚架的螺丝槽外壁,支架主体下端的凸点与脚架的螺丝槽以及底架的通孔通过螺丝固定连接；所述的折叠轮组的折叠架的半圆环体与脚架的凹槽通过连接柱铰接,V形突出与脚架的V形凹槽连接,V形突出中间的螺丝槽与限位板通过螺丝连接；所述的底架的底架主体的凹槽与折叠铲板的铲板主体的半圆环体通过连接柱铰接。其有益效果是：结构简单、轮子可以折叠,运输、收藏占据空间较小,同时结构件以铝合金为材料比较耐用。(The invention relates to a structure of a trolley with folding wheels, which comprises a bracket, a foot rest, a folding wheel set, a connecting column, a chassis, a folding shovel plate, a limiting plate and screws, and is characterized in that: the notch groove at the lower end of the bracket main body of the bracket is connected with the outer wall of the screw groove of the foot rest, and the salient point at the lower end of the bracket main body is fixedly connected with the screw groove of the foot rest and the through hole of the underframe through screws; the semi-circular body of the folding frame of the folding wheel set is hinged with the groove of the foot rest through a connecting column, the V-shaped protrusion is connected with the V-shaped groove of the foot rest, and a screw groove in the middle of the V-shaped protrusion is connected with the limiting plate through a screw; the groove of the underframe main body of the underframe is hinged with the semicircular ring body of the shovel plate main body of the folding shovel plate through a connecting column. The beneficial effects are as follows: the structure is simple, the wheels can be folded, the occupied space for transportation and storage is small, and meanwhile, the structural member is durable by taking aluminum alloy as a material.)

1. The utility model provides a structure of handcart with foldable wheel, includes support, foot rest, folding wheelset, spliced pole, chassis, folding shovel board, limiting plate and screw, characterized by: the notch groove at the lower end of the bracket main body of the bracket is connected with the outer wall of the screw groove of the foot rest, and the salient point at the lower end of the bracket main body is fixedly connected with the screw groove of the foot rest and the through hole of the underframe through screws; the semi-circular body of the folding frame of the folding wheel set is hinged with the groove of the foot rest through a connecting column, the V-shaped protrusion is connected with the V-shaped groove of the foot rest, and a screw groove in the middle of the V-shaped protrusion is connected with the limiting plate through a screw; the groove of the underframe main body of the underframe is hinged with the semicircular ring body of the shovel plate main body of the folding shovel plate through a connecting column.

2. A cart structure with collapsible wheels, as claimed in claim 1, wherein: the middle of the bracket main body of the bracket comprises a notch groove, and a salient point is arranged in the notch groove.

3. A cart structure with collapsible wheels, as claimed in claim 1, wherein: the middle of the foot rest comprises a screw groove, one side of the screw groove is provided with a linear hinge structure consisting of a groove with a string parallel to the circle center, a small groove opposite to the groove and a silica gel column, and two V-shaped grooves are arranged beside the groove.

4. A cart structure with collapsible wheels, as claimed in claim 1, wherein: folding wheelset include folding leg, tripod, wheel and rivet, the wheel pass through the rivet and be connected with the tripod, the tripod passes through the rivet and is connected with the folding leg.

5. A cart structure with collapsible wheels, as claimed in claim 1, wherein: the two ends of the main body of the bottom frame are respectively provided with three through holes, the cavity on one side is provided with two groups of reinforcing ribs, the middle on the other side is also provided with a cavity, and the side of the cavity is provided with a linear hinge structure consisting of a groove with a chord parallel to the circle center, a small groove opposite to the groove and a silica gel column.

6. A cart structure with collapsible wheels, as claimed in claim 1, wherein: the folding shovel plate comprises a shovel plate main body, an extension plate, a cylinder, a thin plate strip and a screw, wherein the bevel groove of the shovel plate main body is connected with the hook buckle of the extension plate through the cylinder, and two ends of the screw groove are connected with the thin plate strip through the screw.

7. A cart structure with collapsible wheels, as in claim 4, wherein: the folding frame comprises a rectangular groove, a through hole is formed in the rectangular groove, one side of the bottom of the rectangular groove is provided with a linear hinge structure consisting of a semicircular ring body, a semicircular groove with the same center of circle and a silica gel column, the other side of the bottom of the rectangular groove is provided with a V-shaped protrusion, and a screw groove is formed in the middle of the V-shaped protrusion.

8. A cart structure with collapsible wheels, as claimed in claim 6, wherein: the shovel board main part be a rectangular sheet metal, there is the screw groove in the centre, sheet metal one end has a linear hinge structure that comprises semicircle ring body and the semicircle recess of concentric circles and silica gel column, respectively has a bevel connection groove about the other end of sheet metal.

9. A cart structure with collapsible wheels, as claimed in claim 1, wherein: the extension plate is a rectangular thin plate, a screw groove is formed in the middle of the extension plate, a hook buckle is respectively arranged at the upper end and the lower end of one end of the thin plate, and a transverse column is arranged between the two hook buckles.

Technical Field

The invention belongs to the technical field of trolleys, and particularly relates to a technology of a trolley structure with folding wheels.

Background

The wheels of the prior hand cart generally do not have a folding function because of the need for bearing weight, and are generally larger in diameter | so as not to be easily caught by obstacles! The disadvantages are then: occupies a large space when being transported and stored. Especially, the stair climbing vehicle with three wheels on one side occupies a large space! Chinese patent: "folding stair climbing vehicle (ZL 2018102914119)" discloses a stair climbing vehicle with foldable wheels, which can basically solve the above technical problems. But the disadvantages are: the structure is more complicated, and the main structure takes plastics as the material, and is more easy ageing and reduces the bearing capacity.

Disclosure of Invention

The invention aims to provide a structure of a trolley with folding wheels, which has simple structure, foldable wheels, small occupied space for transportation and storage, and durable structural members made of aluminum alloy.

In order to achieve the purpose, the technical solution of the invention is as follows: a structure of a trolley with folding wheels is shown in figure 1, a transverse sectional view 2 and a vertical sectional view 3 and comprises a support, a foot rest, a folding wheel set, a connecting column, a bottom frame, a folding shovel plate, a limiting plate and screws. The bracket comprises a bracket main body and a transverse tube as shown in fig. 4. The bracket main body is formed by bending an aluminum pipe, the section of the bracket main body is shown as a sectional view 5, and the bracket main body comprises three notch grooves and a screw groove outer wall for connecting a foot rest. A salient point is arranged in the gap groove and is fixedly connected with a screw groove of the foot rest through a screw. The cross tube is shown in a sectional view 6, and a screw groove is formed in the middle of the cross tube and connected with the bracket main body through screws. Obviously, the bracket main body and the transverse tube can be welded, and the bracket can also be of a telescopic design.

The foot rest is shown in fig. 7 and a sectional view 8, and comprises three screw grooves in the middle, the outer wall of the foot rest is used for being connected with the notch groove of the support, and the inner wall of the foot rest is used for being connected with a screw. One side of the folding frame is provided with a linear hinge structure consisting of a groove with a string parallel to the circle center, a small groove opposite to the groove and a silica gel column, and the linear hinge structure is used for connecting the semi-circular ring body of the folding frame. Two V-shaped grooves are arranged beside the groove and used for connecting the V-shaped protrusions of the folding frame. So that the folding wheel frame can not swing left and right. It is obvious that a semicircular or trapezoidal groove has the same effect.

The folding wheel set is shown in fig. 9 and a sectional view 10 and comprises a folding frame, a tripod, wheels and rivets. As shown in fig. 11 and a sectional view 12, the folding leg has a main body including a triangular or trapezoidal rectangular groove, and the rectangular groove is provided with a through hole for connecting the tripod with a rivet. One side of the bottom of the rectangular groove is provided with a linear hinged structure consisting of a semicircular ring body, a semicircular groove with the same center and a silica gel column, and the linear hinged structure is used for being connected with the groove of the foot rest. The other side of the bottom of the rectangular groove is provided with a V-shaped protrusion which is used for being connected with a V-shaped groove of the foot rest. The middle of the V-shaped protrusion is provided with a screw groove which is used for being connected with the limiting plate through screws. The tripod, wheels and rivets are all standard components. Outlined. The wheel pass through the rivet and be connected with the tripod, the tripod passes through the rivet and is connected with the folding leg. Obviously, in order to strengthen the bearing force, a steel groove can be arranged on the rectangular groove of the folding frame for installing the tripod.

The connecting column is a strip-shaped cylinder.

The underframe, as shown in fig. 13, includes an underframe main body and a plug. The chassis main part is gone up both ends and respectively has three through-hole for be connected with the three screw groove of foot rest through the screw. The chassis main body is shown in a sectional view 14, one side of the chassis main body is provided with a cavity, and two groups of reinforcing ribs are arranged in the cavity and used for increasing the strength when screws are connected. The middle of the other side of the folding shovel plate is also provided with a cavity, and a linear hinge structure consisting of a groove with a chord parallel to the circle center, a small groove opposite to the groove and a silica gel column is arranged beside the cavity and is used for connecting a semi-circular ring body of the folding shovel plate. The plug is shown in fig. 15 and comprises a decorative surface and a step, wherein the decorative surface and the step are integrally connected. The cavity of the underframe main body is connected with the step of the plug.

The folding shovel plate is shown in fig. 16 and a cross section 17 and comprises a shovel plate main body, an extension plate, a cylinder, a thin plate strip and a screw. The shovel plate main body is a rectangular thin plate as shown in a sectional view 18, a screw groove is formed in the middle of the shovel plate main body, and the shovel plate main body is connected with a thin plate strip through screws. One end of the thin plate is provided with a linear hinge structure consisting of a semi-circular ring body, a concentric semi-circular groove and a silica gel column and used for being connected with the groove of the bottom frame. The other end of the thin plate is respectively provided with an inclined opening groove at the upper part and the lower part for connecting the hook of the extension plate. The extension plate is shown in a sectional view of fig. 19, and the main body of the extension plate is a rectangular thin plate, and a screw groove is formed in the middle of the extension plate, and the extension plate is connected with a thin plate strip through screws. The upper end and the lower end of one end of the thin plate are respectively provided with a hook buckle for connecting the bevel groove of the shovel plate main body. The middle of the two hooks is provided with a cross column which forms a rectangular cavity with the side wall, the upper hooks of the shovel plate main body and the side wall, and the shovel plate main body is fixedly connected with the extension plate through a cylinder. The cylinder is a cylindrical strip or a screw and a rivet. The said thin plate strip is shown in fig. 20, and has a countersunk hole in the middle for connecting with the screw grooves of the shovel main body and the extension plate through screws. The screw is a general component outline. The bevel groove of the shovel plate main body is connected with the hook buckle of the extension plate through a cylinder, and two ends of the screw groove are connected with the thin plate strip through screws. Obviously, the folding shovel plate can be connected with the foot rest by using the existing general components and structures.

The limiting plate is a thin plate as shown in fig. 21, and has a countersunk hole in the middle, and is connected with two ends of a screw groove of a folding frame of the folding wheel set through screws. When the V-shaped protrusion of the folding frame of the folding wheel set is connected with the V-shaped groove of the foot rest, the up-and-down swing of the folding wheel set is prevented.

The bracket, the foot stool, the folding wheel set, the connecting column, the underframe, the folding shovel plate, the limiting plate and the screw are connected and in a folding state, and the folding state is shown in fig. 22 and a cross sectional view 23. The folding wheel set rotates 90 degrees relative to the foot rest by taking the connecting column as an axis; the folding shovel plate rotates 90 degrees relative to the bottom frame by taking the connecting column as an axis. And because the silica gel column enhances the friction force, the silica gel column can keep a folded state after rotating.

Support, foot rest, folding wheelset, spliced pole, chassis, folding shovel board, limiting plate and screw be connected as shown in figure 1 and horizontal cross-sectional view 2 and vertical cross-sectional view 3, the breach groove of support main part lower extreme of support connect the screw groove outer wall of foot rest, the bump of support main part lower extreme passes through screw fixed connection with the screw groove of foot rest and the through-hole of chassis. The semicircular ring body of the folding frame of the folding wheel set is hinged to the groove of the foot rest through the connecting column, the V-shaped protrusion is connected with the V-shaped groove of the foot rest, and the screw groove in the middle of the V-shaped protrusion is connected with the limiting plate through screws. The groove of the underframe main body of the underframe is hinged with the semicircular ring body of the shovel plate main body of the folding shovel plate through a connecting column.

Obviously, the combined structure of the foot rest and the folding wheel set in the technical scheme can be applied to products such as a traveling case, a belt wheel escalator, a belt wheel dining car and the like besides the stair climbing car. Meanwhile, the linear hinge structure can be replaced by other hinge structures such as a hinge structure. Equivalents and simple modifications as such are intended to be included within the scope of this patent.

After the scheme is adopted, the invention has the beneficial effects that: the structure is simple, the wheels can be folded, the occupied space for transportation and storage is small, and meanwhile, the structural member is durable by taking aluminum alloy as a material.

Drawings

Figure 1 is a schematic view of an assembly of the present invention.

Figure 2 is a transverse cross-sectional view of the combination of the present invention.

Fig. 3 is a vertical cross-sectional view of the combination of the present invention.

Fig. 4 is a schematic view of a stent of the present invention.

Fig. 5 is a schematic cross-sectional view of a stent of the present invention.

Figure 6 is a cross-sectional schematic view of a cross tube of the present invention.

Fig. 7 is a schematic view of the foot rest of the present invention.

Fig. 8 is a schematic cross-sectional view of a foot rest according to the present invention.

FIG. 9 is a schematic view of a folding wheel assembly of the present invention.

Fig. 10 is a cross-sectional view of the folding wheel assembly of the present invention.

Figure 11 is a schematic view of a folding stand according to the present invention.

Figure 12 is a schematic cross-sectional view of a folding stand of the present invention.

Fig. 13 is a schematic view of the inventive chassis.

Fig. 14 is a cross-sectional schematic view of the chassis body of the present invention.

Fig. 15 is a schematic view of a plug of the present invention.

Fig. 16 is a schematic view of a folding blade of the present invention.

Fig. 17 is a cross-sectional view of a folding blade of the present invention.

FIG. 18 is a schematic cross-sectional view of a blade body of the present invention.

Fig. 19 is a schematic cross-sectional view of an extension board of the present invention.

Fig. 20 is a schematic view of a web of the present invention.

Fig. 21 is a schematic view of a restriction plate of the invention.

Fig. 22 is a schematic view of the bracket, the foot rest, the folding wheel set, the connecting column, the underframe, the folding shovel plate, the limiting plate and the screw connection and folding state of the invention.

Fig. 23 is a sectional view showing a state in which a stand, a foot stool, a folding wheel set, a connecting column, an underframe, a folding shovel plate, a limiting plate and screws are connected and folded according to the present invention.

Description of reference numerals:

10. a support; 11. a stent body; 111. a notch groove; 112. salient points; 12. a transverse tube; 121. a screw groove; 20. a foot rest; 21. a screw groove; 22. a groove; 23. a small groove; 24. a silica gel column; 25. a V-shaped groove; 30. a folding wheel set; 31. a folding frame; 311. a rectangular groove; 312. a through hole; 313. a semi-torus; 314. a semicircular groove; 315. a silica gel column; 316. v-shaped protrusion; 317. a screw groove; 32. a tripod; 33. a wheel; 34. riveting; 40. connecting columns; 50. a chassis; 51. a chassis main body; 511. a through hole; 512. a cavity; 513. reinforcing ribs; 514. a cavity; 515. a groove; 516. a small groove; 517. a silica gel column; 52. a plug; 521. a decorative surface; 522. a step; 60. folding the shovel plate; 61. a blade body; 611. a thin plate; 612. a screw groove; 613. a semi-torus; 614. a semicircular groove; 615. a silica gel column; 616. a bevel groove; 62. an extension plate; 621. a thin plate; 622. a screw groove; 623. hooking and buckling; 624. a cross post; 63. a cylinder; 64. a web; 641. a countersunk hole; 65. a screw; 70. a limiting plate; 71. a countersunk hole; 80. and (4) screws.

Detailed Description

Example (b):

the structure of a trolley with folding wheels, as shown in fig. 1, a transverse sectional view 2 and a vertical sectional view 3, comprises a bracket 10, a foot rest 20, a folding wheel group 30, a connecting column 40, a base frame 50, a folding shovel plate 60, a limiting plate 70 and a screw 80. The bracket 10 is shown in fig. 4 and comprises a bracket main body 11 and a transverse tube 12. The bracket body 11 is formed by bending an aluminum pipe, and has a cross section as shown in fig. 5, and includes three notch grooves 111 in the middle. A bump 112 is provided in the notch groove 111. The cross tube 12 is shown in cross-section in fig. 6 with a screw slot 121 in the middle.

The foot rest 20 is shown in fig. 7 and fig. 8, and includes three screw grooves 21 in the middle. One side of the groove is provided with a linear hinge structure consisting of a groove 22 with a chord parallel to the center of a circle, a small groove 23 opposite to the groove 22 and a silica gel column 24. Adjacent the groove 22 are two V-shaped grooves 25.

The folding wheel set 30 is shown in fig. 9 and a sectional view 10, and includes a folding leg 31, a tripod 32, a wheel 33, and a rivet 34. As shown in fig. 11 and fig. 12, the main body of the folding leg 31 is a rectangular groove 311, and the rectangular groove 311 is provided with a through hole 312. One side of the bottom of the rectangular groove 311 is provided with a linear hinge structure consisting of a semicircular ring body 313, a concentric semicircular groove 314 and a silica gel column 315. The other side of the bottom of the rectangular slot 311 has a V-shaped protrusion 316. In the middle of the V-shaped protrusion 316 is a screw groove 317. The tripod 32, the wheels 33 and the rivets 34 are all standard components. Outlined. The wheel 33 is connected with the tripod 32 through the rivet 34, and the tripod 32 is connected with the folding frame 31 through the rivet 34.

The connecting column 40 is a strip cylinder.

As shown in fig. 13, the chassis 50 includes a chassis body 51 and a plug 52. The chassis main body 51 has three through holes 511 at both ends thereof. The chassis body 51 is shown in a cross-sectional view in fig. 14, and has a cavity 512 at one side, and two sets of ribs 513 are disposed in the cavity 512. The middle of the other side of the cavity is also provided with a cavity 514, and a linear hinge structure consisting of a groove 515 with a chord parallel to the center of a circle, a small groove 516 opposite to the groove 515 and a silica gel column 517 is arranged beside the cavity 514. As shown in fig. 15, the plug 52 includes a decorative surface 521 and a step 522, and the decorative surface 521 and the step 522 are integrally connected. Cavities 512 and 514 of chassis body 51 are coupled to step 522 of plug 52.

The folding blade 60, as shown in fig. 16 and fig. 17, includes a blade body 61, an extension plate 62, a cylinder 63, a thin plate 64, and a screw 65. As shown in fig. 18, the main body of the shovel 61 is a rectangular thin plate 611 with a screw groove 612 in the middle. The sheet 611 has a linear hinge structure at one end comprising a semicircular ring 613, a concentric semicircular groove 614 and a silica gel column 615. The other end of the thin plate 611 has a bevel groove 616 at the upper and lower sides. The extension plate 62 is shown in cross-section in fig. 19, and has a rectangular thin plate 621 with a screw groove 622 in the middle. The upper and lower ends of one end of the thin plate 621 are respectively provided with a hook 623. A cross column 624 is arranged in the middle of the two clasps 623. The cylinder 63 is a cylindrical strip or a screw and a rivet. The web 64 is shown in fig. 20 with a counterbore 641. The screw 65 is a general component outline. The bevel groove 616 of the shovel plate main body 61 and the hook 623 of the extension plate 62 are connected through the cylinder 63, and both ends of the screw grooves 612 and 622 are connected with the thin plate strip 64 through screws 65.

The limiting plate 70 is a thin plate with a countersunk hole 71 in the middle, as shown in fig. 21.

The bracket 10, the foot rest 20, the folding wheel set 30, the connecting column 40, the base frame 50, the folding shovel plate 60, the limiting plate 70 and the screw 80 are connected and in a folded state as shown in fig. 22 and a cross-sectional view 23. The folding wheel set 30 rotates 90 degrees relative to the foot rest 20 by taking the connecting column 40 as an axis; folding shovel 60 rotates 90 degrees about connecting post 40 relative to base frame 50.

Support 10, foot rest 20, folding wheelset 30, spliced pole 40, chassis 50, folding shovel board 60, limiting plate 70 and screw 80 be connected as shown in fig. 1 and horizontal cross sectional view 2 and vertical cross sectional view 3, support 10's support main body 11 lower extreme breach groove 111 connect the screw groove 21 outer wall of foot rest 20, the bump 112 of support main body 11 lower extreme passes through screw 80 fixed connection with the screw groove 21 of foot rest 20 and the through-hole 511 of chassis 50. The semicircular ring body 313 of the folding leg 31 of the folding wheel set 30 is hinged with the groove 22 of the foot rest 20 through the connecting column 40, the V-shaped protrusion 316 is connected with the V-shaped groove 25 of the foot rest 20, and the screw groove 317 in the middle of the V-shaped protrusion 316 is connected with the limiting plate 70 through the screw 80. Groove 515 of base frame body 51 of base frame 50 is hinged to semi-circular ring 613 of blade body 61 of folding blade 60 through connecting column 40.