A tent with double-motor drive for automatic unfolding and folding

Abstract

The present invention provides a tent with double-motor drive for automatic expansion and retraction, which includes a tent cloth, six groups of strut assemblies, and a double-motor drive mechanism for driving the six groups of strut assemblies to contract and expand. The strut assembly includes an upper strut, a lower strut hinged to the upper strut, and a middle strut hinged to the upper strut. The output shaft of the upper motor is fixedly connected to the central through hole of the wire reel. The output shaft of the lower motor is fixedly connected to the lower end of the lead screw in the lead screw-nut mechanism. The upper end of the lead screw is supported on the base outside the wire reel through a bearing. A steel wire connected to the lower strut is wound around the wire reel. The lead screw nut is hinged to the middle strut through a sliding connection frame, and the base is hinged to the upper strut. The structure of the present invention is simple and convenient to use. By driving the strut assembly to rotate through the motor lead screw assembly, the wire reel, and the steel wire, the opening and contraction of the entire tent can be realized, solving the problem that multiple people need to cooperate in the operation when the traditional tent is expanded or contracted, and broadening the usage scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of tents, and particularly to a tent that can be automatically retracted and deployed. Background Art

[0002] During the use of tents, due to their large volume, the process of opening and closing is often cumbersome and difficult. It is impossible for a single person to easily complete the opening and closing, and often requires multiple people to cooperate to complete the opening and closing process of the tent, which brings a lot of inconvenience to the use of the tent and limits many usage scenarios of the tent. Summary of the Invention

[0003] Some existing tents are not easily opened and closed due to their large volume, causing a lot of inconvenience in use. The present invention aims to solve this problem and provides a tent with a dual-motor drive for automatic retraction and deployment, which can be applied to various scenarios, broadens the usage scenarios of the tent, simplifies the operations before and after using the tent, and enables a single person to complete the opening and closing actions of the tent through the use of this product, which is very convenient to use.

[0004] The present invention is implemented by the following technical solutions:

[0005] A tent with a dual-motor drive for automatic retraction and deployment includes six groups of strut assemblies that connect and support the tent fabric, and also includes a dual-motor drive mechanism for driving the six groups of strut assemblies to retract and deploy;

[0006] The strut assembly includes a lower strut, an upper strut, and a middle strut. The upper strut is a hollow rod-shaped structure. The front end of the lower strut is hinged to the rear end of the upper strut, and two torsion springs are provided at the hinge. The upper middle part of the upper strut is hinged to the rear end of the middle strut;

[0007] The dual-motor drive mechanism includes an upper motor arranged above with its output shaft downward and a lower motor arranged below with its output shaft upward. The output shafts of the upper motor and the lower motor are concentrically arranged. The output shaft of the upper motor is fixedly connected to the central through hole of a coiled shaft with an annular cylindrical structure, and the output shaft of the lower motor is fixedly connected to the lower end of a screw rod through a coupling;

[0008] There is a hollow sleeve outside the screw rod. The bottom of the hollow sleeve is fixedly connected to the lower motor connecting flange of the lower motor. A screw nut is threadedly connected to the screw rod. The central through hole of an annular sliding connection frame is fixedly connected to the screw nut. Six first connecting ears extending radially outward along the sliding connection frame are evenly spaced on the outer circumferential surface of the sliding connection frame. Six strip-shaped through grooves are evenly spaced along the circumferential direction on the middle upper part of the outer circumferential surface of the hollow sleeve for guiding the corresponding first connecting ears. After the sliding connection frame is threadedly connected to the screw rod through the screw nut, the six first connecting ears respectively extend out from the strip-shaped through grooves of the corresponding hollow sleeve and are hinged to the front ends of the corresponding middle support rods. A bearing is fixedly arranged inside the upper end of the hollow sleeve. The upper end of the screw rod is supported in the bearing. The upper end surface of the bearing is fixedly connected to a circular base with an annular upper edge. Six second connecting ears extending radially outward along the base are evenly spaced on the outer circumferential surface of the annular upper edge of the base. The six second connecting ears are respectively hinged to the front ends of the corresponding upper support rods;

[0009] The upper motor is fixedly connected to the upper end surface of a hollow cylindrical motor frame sleeved outside the wire winding shaft through the upper motor connecting flange. The lower end surface of the motor frame is fixedly connected to the base. A circular guide disk is fixedly arranged inside the base. Six guide pulleys are evenly spaced on the annular upper end surface of the guide disk. Six steel wires are fixedly wound on the wire winding shaft. The rear ends of the steel wires pass through the barrel wall at the lower part of the motor frame, are guided by the corresponding guide pulleys, then pass through the annular upper edge of the base, enter the cavity of the upper support rod, extend out from the rear end of the upper support rod, and are wound at the hinge joint of the upper support rod and the lower support rod, and then are fixed to the front end of the lower support rod.

[0010] Further technical features include:

[0011] A stretching joint head is fixedly arranged at the front end of the lower support rod. A stretching joint socket is fixedly arranged at the rear end of the upper support rod. The stretching joint head and the stretching joint socket are hinged. The bodies of two torsion springs are arranged at intervals and sleeved on the hinge shaft of the stretching joint head and the stretching joint socket. One end of each torsion spring is fixed in the stretching joint head, and the other end of each torsion spring is fixed in the stretching joint socket. A through head of the upper support rod is fixedly arranged in the middle upper part of the upper support rod. An upper joint head is fixedly arranged at the front end of the upper support rod. A rear-end connecting head of the middle support rod is fixedly arranged at the rear end of the middle support rod. A front-end connecting head of the middle support rod is fixedly arranged at the front end of the middle support rod. The rear-end connecting head of the middle support rod is hinged to the through head of the upper support rod. The front-end connecting head of the middle support rod is hinged to the first connecting ear of the sliding connection frame. The upper joint head is hinged to the second connecting ear on the base.

[0012] The second connecting ear of the base is composed of two connecting ear pieces arranged at intervals, and a second connecting ear guide wheel is arranged between the two connecting ear pieces. A base wire through hole is opened at a position on the annular upper edge of the base between the two connecting ear pieces of each second connecting ear. A stretching joint socket guide wheel is arranged at a position near the rear end of the upper support rod in each stretching joint socket. A wire connecting hole is opened on the stretching joint head. The rear end of the wire extends out through the base wire through hole, is guided by the second connecting ear guide wheel, then passes through the upper joint head and extends into the cavity of the upper support rod, then extends out from the rear end of the upper support rod and is guided by the stretching joint socket guide wheel, and then is wound around the part between the two torsion springs on the hinge axis of the stretching joint head and the stretching joint socket, and then is fixed in the wire connecting hole.

[0013] A plurality of threaded holes are evenly spaced on the outer cylindrical surface of the bearing. Threaded holes corresponding to the threaded holes on the outer cylindrical surface of the bearing are opened at the upper end of the hollow sleeve. The outer cylindrical surface of the bearing is fixedly connected to the upper end of the hollow sleeve by bolts.

[0014] A plurality of threaded holes are evenly spaced on the annular upper end surface of the bearing. Threaded holes corresponding to the threaded holes on the annular upper end surface of the bearing are opened on the annular lower end surface of the base. The annular upper end surface of the bearing is fixedly connected to the annular lower end surface of the base by bolts.

[0015] The upper part of the hollow cylindrical structure of the motor frame is a circular motor frame connecting disc. A plurality of threaded holes are evenly spaced on the upper motor connecting flange. Threaded holes corresponding to the threaded holes on the upper motor connecting flange are evenly spaced on the motor frame connecting disc. The motor frame connecting disc is fixedly connected to the upper motor connecting flange by bolts. Six motor frame circular through holes are evenly spaced along the circumferential direction on the upper edge of the hollow cylindrical structure at the lower part of the motor frame. The wire fixed and wound on the wire reel inside the motor frame passes through the corresponding motor frame circular through hole;

[0016] A plurality of threaded holes are evenly spaced on the lower end surface of the hollow cylindrical structure of the motor frame. Threaded holes corresponding to the threaded holes on the hollow cylindrical structure of the motor frame are opened on the circular upper end surface of the base. The hollow cylindrical structure of the motor frame is fixedly connected to the circular upper end surface of the base by bolts.

[0017] The spool is an annular cylindrical structure with a central through-hole. Six spool through-holes are evenly spaced along the axial direction on the spool. Three annular guide grooves are evenly spaced from top to bottom on the lower part of the outer cylindrical surface of the spool. Six spool lower radial holes communicating with the corresponding spool through-holes are evenly spaced along the circumferential direction in each annular guide groove. Six spool upper radial holes communicating with the corresponding spool through-holes are evenly spaced along the circumferential direction on the upper part of the outer cylindrical surface of the spool. The axes of each spool through-hole, the axis of the corresponding spool upper radial hole below this spool through-hole, and the axes of the three spool lower radial holes below this spool upper radial hole are all in the same vertical plane.

[0018] Two spool through-holes symmetric about the axis of the spool are divided into a group of spool through-hole groups. The six spool through-holes are divided into three groups of spool through-hole groups in total. Two steel wires symmetric about the axis of the spool are divided into a group of steel wire groups. The six steel wires are divided into three groups of steel wire groups in total. The ends of the two steel wires in each group of steel wire groups respectively extend into the spool through-hole from above the two spool through-holes in the corresponding spool through-hole group, and extend out from the spool lower radial hole directly below the spool through-hole in the corresponding guide groove, and are wound counterclockwise in this guide groove.

[0019] The front end of each steel wire exposed above the corresponding spool through-hole is fixed by tying a knot, and a pin is inserted into the spool upper radial hole directly below the spool through-hole and then tightly fixed to this steel wire.

[0020] There is an electric control box fixed on the motor housing of the upper motor above the upper motor. A rechargeable battery pack and a control circuit connected to the rechargeable battery pack are arranged in the electric control box. The wire harnesses of the upper motor and the lower motor are both connected to the control circuit to control the forward and reverse rotations of the upper motor and the lower motor, and to realize the opening and closing actions of the tent.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The structure of the present invention is simple and easy to use. The upper motor drives the wire winding component to pull or relax the steel wire to control the contraction or expansion of the lower support rod, and the upper motor drives the screw rod component to control the contraction or expansion of the upper support rod, so as to realize the automatic control of the opening and contraction of the entire tent. The present invention solves the problem that multiple people need to cooperate in the operation when the traditional tent is unfolded or contracted, enables a single person to easily and conveniently use the tent, and broadens the usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] Figure 1Schematic diagram of the external structure of the strut assembly and the dual-motor drive mechanism in a tent with dual-motor drive for automatic deployment and retraction provided by the present invention.

[0025] Figure 2 Schematic diagram of the connection relationship between the strut assembly and the dual-motor drive mechanism in the present invention.

[0026] Figure 3 Schematic diagram of the strut assembly in the present invention.

[0027] Figure 4 Schematic diagram of the connection relationship between the lower strut and the upper strut in the present invention.

[0028] Figure 5 Exploded structural schematic diagram of the components of the dual-motor drive mechanism in the present invention.

[0029] Figure 6 Schematic diagram of the base in the present invention.

[0030] Figure 7 Schematic diagram of the wire reel in the present invention.

[0031] Figure 8 Schematic diagram of the connection of the upper motor to the motor bracket, wire reel, and guide disk in the present invention.

[0032] Figure 9 Schematic diagram of the connection of the lower motor to the lead screw and the sliding connection bracket in the present invention.

[0033] Figure 10 Schematic diagram of the overall structure of the dual-motor drive mechanism after assembly in the invention.

[0034] In the figure: 1. Lower strut, 2. Upper strut, 3. Middle strut, 4. Torsion spring, 5. Upper motor, 6. Lower motor, 7. Wire reel, 8. Lead screw, 9. Hollow sleeve, 10. Lower motor connection flange, 11. Lead screw nut, 12. Sliding connection bracket, 13. First connection ear, 14. Strip-shaped through slot, 15. Bearing, 16. Base, 17. Second connection ear, 18. Upper motor connection flange, 19. Motor bracket, 20. Guide disk, 21. Guide pulley, 22. Tensile joint head, 23. Tensile joint socket, 24. Upper strut through head, 25. Upper joint head, 26. Rear connection head of the middle strut, 27. Front connection head of the middle strut, 28. Second connection ear guide pulley, 29. Base wire through hole, 30. Tensile joint socket guide pulley, 31. Wire connection hole, 32. Motor bracket connection disk, 33. Circular through hole of the motor bracket, 34. Through hole of the wire reel, 35. Guide groove, 36. Lower radial hole of the wire reel, 37. Upper radial hole of the wire reel, 38. Wire, 39. Electric control box Detailed implementation manner

[0035] The present invention will be described in detail below with reference to the accompanying drawings:

[0036] The present invention provides a tent with double - motor drive for automatic retraction and deployment. As Figure 1 shown, it includes six sets of strut assemblies for connecting and supporting the tent fabric, and also includes a double - motor drive mechanism for driving the six sets of strut assemblies to retract and deploy;

[0037] The tent fabric is not shown in the figures. The covering and connection structures between the tent fabric and the strut assemblies have various implementation methods in the prior art and there is no unique new structure in the present invention, so no detailed description will be given.

[0038] As Figure 2 and Figure 3 shown, the strut assembly includes a lower strut 1, an upper strut 2 and a middle strut 3. The upper strut 2 is a hollow rod - shaped structure. The front end of the lower strut 1 is hinged to the rear end of the upper strut 2, and two torsion springs 4 are arranged at the hinge. The middle - upper part of the upper strut 2 is hinged to the rear end of the middle strut 3;

[0039] As Figure 2 and Figure 5 shown, the double - motor drive mechanism includes an upper motor 5 arranged above with its output shaft downward and a lower motor 6 arranged below with its output shaft upward. The output shafts of the upper motor 5 and the lower motor 6 are concentrically arranged. The output shaft of the upper motor 5 is fixedly connected to the central through - hole of a coiled - wire shaft 7 with an annular - cylindrical structure. The output shaft of the lower motor 6 is fixedly connected to the lower end of a screw rod 8 through a coupling;

[0040] As Figure 5 shown, there is a hollow sleeve 9 outside the screw rod 8. The bottom of the hollow sleeve 9 is fixedly connected to the lower - motor connection flange 10 of the lower motor 6. A screw - rod nut 11 is thread - connected to the screw rod 8. The central through - hole of an annular sliding connection frame 12 is fixedly connected to the screw - rod nut 11. Six first connection ears 13 extending radially outward along the sliding connection frame 12 are evenly arranged on the outer circumferential surface of the sliding connection frame 12. Six strip - shaped through - slots 14 are evenly arranged along the circumferential direction on the middle - upper part of the outer circumferential surface of the hollow sleeve 9 for guiding the corresponding first connection ears 13. After the sliding connection frame 12 is thread - connected to the screw rod 8 through the screw - rod nut 11, the six first connection ears 13 respectively extend out from the corresponding strip - shaped through - slots 14 of the hollow sleeve 9 and are hinged to the front ends of the corresponding middle struts 2. A bearing 15 is fixedly arranged inside the upper end of the hollow sleeve 9. The upper end of the screw rod 8 is supported in the bearing 15. The upper - end face of the bearing 15 is fixedly connected to a base 16 which is circular and has an annular upper edge. Six second connection ears 17 extending radially outward along the base 16 are evenly arranged on the outer circumferential surface of the annular upper edge of the base 16. The six second connection ears 17 are respectively hinged to the front ends of the corresponding upper struts 2;

[0041] As Figure 5 shown, the upper motor 5 is fixedly connected to the upper end surface of a hollow cylindrical motor frame 19 sleeved outside the wire winding shaft 7 through an upper motor connection flange 18. The lower end surface of the motor frame 19 is fixedly connected to the base 16. A circular guide plate 20 is fixedly arranged inside the base 16. Six guide pulleys 21 are evenly arranged at intervals on the annular upper end surface of the guide plate 20. Six steel wires 38 are fixedly wound on the wire winding shaft 7. The rear ends of the steel wires 38 pass through the barrel wall at the lower part of the motor frame 19, are guided by the corresponding guide pulleys 21, then pass through the annular upper edge of the base 16, enter the cavity of the upper support rod 2, extend from the rear end of the upper support rod 2, and are wound at the hinge joint of the upper support rod 2 and the lower support rod 1, and then are fixed to the front end of the lower support rod 1.

[0042] In this embodiment, as Figure 3 shown, a stretching joint head 22 is fixedly arranged at the front end of the lower support rod 1, and a stretching joint socket 23 is fixedly arranged at the rear end of the upper support rod 2. The stretching joint head 22 and the stretching joint socket 23 are hinged. The main bodies of the two torsion springs 4 are arranged at intervals and sleeved on the hinge shaft of the stretching joint head 22 and the stretching joint socket 23. One end of each torsion spring 4 is fixed in the stretching joint head 22, and the other end of each torsion spring 4 is fixed in the stretching joint socket 23. A through head 24 of the upper support rod is fixedly arranged in the middle upper part of the upper support rod 2, and an upper joint head 25 is fixedly arranged at the front end of the upper support rod 2. A rear end connecting head 26 of the middle support rod is fixedly arranged at the rear end of the middle support rod 3, and a front end connecting head 27 of the middle support rod is fixedly arranged at the front end of the middle support rod 3. The rear end connecting head 26 of the middle support rod is hinged to the through head 24 of the upper support rod, the front end connecting head 27 of the middle support rod is hinged to the first connecting ear 13 of the sliding connection frame 12, and the upper joint head 25 is hinged to the second connecting ear 17 on the base 16.

[0043] In this embodiment, as Figure 6 shown, the second connecting ear 17 of the base 16 is composed of two connecting ear pieces arranged at intervals. A second connecting ear guide wheel 28 is arranged between the two connecting ear pieces. A base wire through hole 29 is opened at the position between the two connecting ear pieces of each second connecting ear 28 on the annular upper edge of the base 16. As Figure 4 shown, a stretching joint socket guide wheel 30 is arranged at a position close to the rear end of the upper support rod 2 in each stretching joint socket 23. A wire connecting hole 31 is opened on the stretching joint head 22. The rear end of the steel wire 38 extends out from the base wire through hole 29, is guided by the second connecting ear guide wheel 28, then passes through the upper joint head 25 and extends into the cavity of the upper support rod 2, then extends out from the rear end of the upper support rod 2 and is guided by the stretching joint socket guide wheel 30, then is wound at the position between the two torsion springs 4 on the hinge shaft of the stretching joint head 22 and the stretching joint socket 23, and then is fixed in the wire connecting hole 31.

[0044] In this embodiment, a plurality of threaded holes are evenly spaced on the outer cylindrical surface of the bearing 15. Threaded holes corresponding one by one to the threaded holes on the outer cylindrical surface of the bearing 15 are provided at the upper end of the hollow sleeve 9. The outer cylindrical surface of the bearing 15 is fixedly connected to the upper end of the hollow sleeve 9 by bolts.

[0045] In this embodiment, a plurality of threaded holes are evenly spaced on the annular upper end surface of the bearing 15. As Figure 6 shown, threaded holes corresponding one by one to the threaded holes on the annular upper end surface of the bearing 15 are provided on the annular lower end surface of the base 16. The annular upper end surface of the bearing 15 is fixedly connected to the annular lower end surface of the base 16 by bolts.

[0046] In this embodiment, the upper part of the hollow cylindrical structure of the motor frame 19 is a circular motor frame connecting disk 32. A plurality of threaded holes are evenly spaced on the upper motor connecting flange 18. Threaded holes corresponding one by one to the threaded holes on the upper motor connecting flange 18 are evenly spaced on the motor frame connecting disk 32. The motor frame connecting disk 32 is fixedly connected to the upper motor connecting flange 18 by bolts. Six motor frame circular through holes 33 are evenly spaced along the circumferential direction on the lower hollow cylindrical structure of the motor frame 19. The steel wire 38 fixed and wound on the winding shaft 7 inside the motor frame 19 passes through the corresponding motor frame circular through holes 33;

[0047] A plurality of threaded holes are evenly spaced on the lower end surface of the hollow cylindrical structure of the motor frame 19. Threaded holes corresponding one by one to the threaded holes on the hollow cylindrical structure of the motor frame 19 are provided on the annular upper end surface of the base 16. The hollow cylindrical structure of the motor frame 19 is fixedly connected to the annular upper end surface of the base 16 by bolts.

[0048] In this embodiment, the winding shaft 7 is an annular cylindrical structure with a central through hole. Six winding shaft through holes 34 are evenly spaced along the axial direction on the winding shaft 7. Three annular guide grooves 35 are evenly spaced from top to bottom on the lower part of the outer cylindrical surface of the winding shaft 7. Six winding shaft lower radial holes 36 communicating with the corresponding winding shaft through holes are evenly spaced along the circumferential direction in each annular guide groove 35. Six winding shaft upper radial holes 37 communicating with the winding shaft through holes 34 are evenly spaced along the circumferential direction on the upper part of the outer cylindrical surface of the winding shaft 7. The axes of each winding shaft through hole 34, the axis of the winding shaft upper radial hole 37 corresponding to the lower part of this winding shaft through hole 34, and the axes of the three winding shaft lower radial holes 36 corresponding to the lower part of this winding shaft upper radial hole 37 are all in the same vertical plane;

[0049] The two spool through-holes 34 that are axisymmetric about the axis of the spool 7 are grouped into a set of spool through-hole groups. The six spool through-holes 34 are divided into three sets of spool through-hole groups. The two steel wires 38 that are axisymmetric about the axis of the spool 7 are grouped into a set of steel wire groups. The six steel wires 38 are divided into three sets of steel wire groups. The end parts of the two steel wires 38 in each set of steel wire groups respectively extend into the corresponding spool through-hole 34 from above the two spool through-holes 34 in the corresponding set of spool through-hole groups, and extend out from the spool lower radial holes 36 located directly below the corresponding spool through-hole 34 in the corresponding guiding groove 35, and are wound counterclockwise in the corresponding guiding groove 35.

[0050] In this embodiment, the end parts of two of the steel wires 38 respectively extend into the corresponding spool through-hole 34 from above the two symmetrically arranged spool through-holes 34 in the first set of spool through-hole groups, and extend out from the spool lower radial hole 36 located directly below the corresponding spool through-hole 34 in the first guiding groove 35, and are wound counterclockwise in the first guiding groove 35 from top to bottom. The end parts of the other two steel wires 38 respectively extend into the corresponding spool through-hole 34 from above the two spool through-holes 34 in the second set of spool through-hole groups, and extend out from the spool lower radial hole 36 located directly below the corresponding spool through-hole 34 in the second guiding groove 35, and are wound in the second guiding groove 35 from top to bottom. The end parts of the last two steel wires 38 respectively extend into the corresponding spool through-hole 34 from above the two spool through-holes 34 in the third set of spool through-hole groups, and extend out from the spool lower radial hole 36 located directly below the corresponding spool through-hole 34 in the third guiding groove 35, and are wound in the third guiding groove 35 from top to bottom.

[0051] In this embodiment, the front end of each steel wire 38 exposed above the corresponding spool through-hole 34 is fixed by tying a knot, and a pin is inserted into the spool upper radial hole 37 directly below the corresponding spool through-hole 34 to tightly fix the steel wire.

[0052] In this embodiment, there is an electric control box 39 fixed on the motor housing of the upper motor 5 above the upper motor 5. A rechargeable battery pack and a control circuit connected to the rechargeable battery pack are arranged in the electric control box 39. The wire harnesses of the upper motor 5 and the lower motor 6 are both connected to the control circuit to control the forward and reverse rotations of the upper motor 5 and the lower motor 6, and to realize the opening and closing actions of the tent.

[0053] The working principle and usage process of the present invention:

[0054] Shrinking process:

[0055] The lower motor 6 rotates, and the lower motor 6 drives the screw rod 8 to rotate. When the screw rod 8 rotates, it drives the screw nut 11 to move upward axially. When the screw nut 11 and the sliding connection frame 12 move, they drive the connecting head 27 at the front end of the middle support rod to move upward, and then through the middle support rod 3, the upper support rod 2 is pulled to rotate inward and gather; the upper motor 5 drives the wire reel 7 to rotate, the steel wire is wound around the wire reel 7, and the wire reel 7 pulls the lower support rod 1 through the steel wire 38 to overcome the elastic force of the torsion spring 4, so that the lower support rod 1 rotates around the hinge point of the stretching joint head 22 and the stretching joint socket 23, realizing contraction and folding.

[0056] Deployment process:

[0057] Place the present invention on the ground so that the stretching joint socket 23 contacts the ground. Start the lower motor 6, and the lower motor 6 drives the screw rod 8 to rotate. When the screw rod 8 rotates, it drives the screw nut 11 to move downward axially. When the screw nut 11 and the sliding connection frame 12 move, they drive the connecting head 27 at the front end of the middle support rod to move downward. The middle support rod 3 pushes the upper support rod 2 to rotate and expand radially outward. At this time, the upper support rod 2 is not fully rotated in place. At this time, the upper motor 5 drives the wire reel 7 to rotate, and the steel wire 38 wound around the wire reel 7 is released, so that the pulling force of the steel wire on the stretching joint head 22 disappears. The stretching joint head 22 and the stretching joint socket 23 are opened under the elastic force of the torsion spring 4, and the lower support rod 1 rotates around the hinge point of the stretching joint head 22 and the stretching joint socket 23, realizing the flipping and deployment of the lower support rod 1. At this time, the screw nut 11 and the sliding connection frame 12 continue to move downward until the upper support rod 3 is fully extended, realizing the opening process of the tent.

Claims

1. A tent that can be automatically unfolded and retracted by a dual motor drive, comprising six groups of support poles that connect and support the tent fabric, characterized in that: It also includes a dual-motor drive mechanism for driving the six groups of strut assemblies to retract and deploy; The support rod assembly comprises a lower support rod (1), an upper support rod (2) and a middle support rod (3), wherein the upper support rod (2) is a hollow rod-shaped structure, the front end of the lower support rod (1) is hinged to the rear end of the upper support rod (2), and two torsion springs (4) are provided at the hinge, and the upper middle portion of the upper support rod (2) is hinged to the rear end of the middle support rod (3); The dual-motor drive mechanism comprises an upper motor (5) arranged at the top and having its output shaft arranged downward, and a lower motor (6) arranged at the bottom and having its output shaft arranged upward, the output shaft of the upper motor (5) and the output shaft of the lower motor (6) being arranged concentrically, the output shaft of the upper motor (5) being fixedly connected to the central through hole of a winding shaft (7) having an annular cylindrical structure, and the output shaft of the lower motor (6) being fixedly connected to the lower end of a screw rod (8) via a coupling; The screw rod (8) is provided with a hollow sleeve (9) outside, the bottom of the hollow sleeve (9) is fixedly connected to the lower motor connection flange (10) of the lower motor (6), a screw nut (11) is threadedly connected to the screw rod (8), a central through hole of an annular sliding connection frame (12) is fixedly connected to the screw nut (11), six first connection ears (13) extending radially outward along the sliding connection frame (12) are evenly spaced on the outer circumferential surface of the sliding connection frame (12), six strip-shaped through grooves (14) are evenly spaced in the circumferential direction on the middle and upper part of the outer circumferential surface of the hollow sleeve (9) for guiding the corresponding first connection ears (13), and the sliding connection frame (12) is fixedly connected to the screw rod (8) by a screw thread. After the rod nut (11) is threadedly connected to the screw rod (8), six first connecting ears (13) respectively extend from the strip-shaped through groove (14) of the corresponding hollow sleeve (9) and are hinged to the front end of the corresponding middle support rod (3); a bearing (15) is fixedly provided inside the upper end of the hollow sleeve (9); the upper end of the screw rod (8) is supported in the bearing (15); the upper end surface of the bearing (15) is fixedly connected to a circular base (16) with an annular upper edge; six second connecting ears (17) extending radially outward from the base (16) are evenly spaced on the outer circumferential surface of the annular upper edge of the base (16); the six second connecting ears (17) are respectively hinged to the front end of the corresponding upper support rod (2); The upper motor (5) is fixedly connected to the upper end face of a hollow cylindrical motor frame (19) sleeved on the outside of the winding shaft (7) through the upper motor connecting flange (18), the lower end face of the motor frame (19) is fixedly connected to the base (16), a circular guide disc (20) is fixedly provided in the base (16), six guide pulleys (21) are evenly spaced on the annular upper end face of the guide disc (20), six steel wires (38) are fixed and wound on the winding shaft (7), the rear end of the steel wire (38) passes through the cylinder wall of the lower part of the motor frame (19) and is guided by the corresponding guide pulleys (21), then passes through the annular upper edge of the base (16), enters the cavity of the upper support rod (2), and then extends from the rear end of the upper support rod (2) and is wound around the hinge of the upper support rod (2) and the lower support rod (1), and is fixed to the front end of the lower support rod (1); The winding shaft (7) is an annular cylindrical structure with a central through hole. Six winding shaft through holes (34) are evenly spaced along the axial direction on the winding shaft (7). Three annular guide grooves (35) are evenly spaced from top to bottom on the lower part of the outer cylindrical surface of the winding shaft (7). Six radial holes (36) in the lower part of the winding shaft that are connected to the corresponding winding shaft through holes (34) are evenly spaced along the circumferential direction in each annular guide groove (35). The upper portion of the outer cylindrical surface of (7) is provided with six winding shaft upper radial holes (37) that are evenly spaced along the circumferential direction and communicate with the corresponding winding shaft through holes (34). The axis of each winding shaft through hole (34), the axis of the corresponding winding shaft upper radial hole (37) below the winding shaft through hole (34), and the axes of the three winding shaft lower radial holes (36) below the winding shaft upper radial hole (37) are all on the same vertical plane. Two winding shaft through holes (34) symmetrical about the axis of the winding shaft (7) are divided into one winding shaft through hole group, and six winding shaft through holes (34) are divided into three winding shaft through hole groups. Two steel wires (38) symmetrical about the axis of the winding shaft (7) are divided into one steel wire group, and six steel wires (38) are divided into three steel wire groups. The ends of the two steel wires (38) in each steel wire group extend into the winding shaft through hole (34) from above the two winding shaft through holes (34) in the corresponding winding shaft through hole group, and extend from the winding shaft lower radial hole (36) located directly below the winding shaft through hole (34) in the corresponding guide groove (35), and are wound counterclockwise in the guide groove (35).

2. A dual-motor driven automatic tent according to claim 1, characterized in that: The front end of the lower support rod (1) is fixedly provided with a stretching joint head (22), the rear end of the upper support rod (2) is fixedly provided with a stretching joint fossa (23), the stretching joint head (22) and the stretching joint fossa (23) are hinged, the main bodies of the two torsion springs (4) are arranged at intervals and are sleeved on the hinge axis of the stretching joint head (22) and the stretching joint fossa (23), one end of each torsion spring (4) is fixed in the stretching joint head (22), and the other end of each torsion spring (4) is fixed in the stretching joint fossa (23), the middle and upper part of the upper support rod (2) is fixedly provided with The upper support rod through-head (24) is fixedly provided with an upper joint head (25) at the front end of the upper support rod (2), the rear end of the middle support rod (3) is fixedly provided with a middle support rod rear end connecting head (26), the front end of the middle support rod (3) is fixedly provided with a middle support rod front end connecting head (27), the middle support rod rear end connecting head (26) is hinged to the upper support rod through-head (24), the middle support rod front end connecting head (27) is hinged to the first connecting ear (13) of the sliding connecting frame (12), and the upper joint head (25) is hinged to the second connecting ear (17) on the base (16).

3. A dual-motor driven automatic tent according to claim 2, characterized in that: The second connecting ear (17) of the base (16) is composed of two connecting ear pieces arranged at intervals, and a second connecting ear guide wheel (28) is arranged between the two connecting ear pieces. A base wire through hole (29) is opened on the annular upper edge of the base (16) at a position between the two connecting ear pieces of each second connecting ear (17). A stretching joint socket guide wheel (30) is set at a position near the rear end of the upper support rod (2) in each stretching joint socket (23). A stretching joint head (22) is opened. The rear end of the steel wire (38) extends from the base steel wire through hole (29) and is guided by the second connecting ear guide wheel (28), then passes through the upper joint head (25) and extends into the cavity of the upper support rod (2), then extends from the rear end of the upper support rod (2) and is guided by the stretching joint socket guide wheel (30), and then is wound around the position between the two torsion springs (4) on the hinge axis of the stretching joint head (22) and the stretching joint socket (23), and is fixed in the steel wire connecting hole (31).

4. The dual-motor driven automatic tent according to claim 1, characterized in that: The outer cylindrical surface of the bearing (15) is provided with a plurality of threaded holes at even intervals, the upper end of the hollow sleeve (9) is provided with threaded holes corresponding one to one to the threaded holes on the outer cylindrical surface of the bearing (15), and the outer cylindrical surface of the bearing (15) is fixedly connected to the upper end of the hollow sleeve (9) by bolts.

5. The dual-motor driven automatic tent according to claim 1, characterized in that: The annular upper end surface of the bearing (15) is provided with a plurality of threaded holes at even intervals, the annular lower end surface of the base (16) is provided with threaded holes corresponding one to one to the threaded holes on the annular upper end surface of the bearing (15), and the annular upper end surface of the bearing (15) is fixedly connected to the annular lower end surface of the base (16) by bolts.

6. The dual-motor driven automatic tent according to claim 1, characterized in that: The upper portion of the hollow cylindrical structure of the motor frame (19) is a circular motor frame connecting plate (32), a plurality of threaded holes are evenly spaced on the upper motor connecting flange (18), threaded holes are evenly spaced on the motor frame connecting plate (32) and correspond to the threaded holes on the upper motor connecting flange (18), the motor frame connecting plate (32) is fixedly connected to the upper motor connecting flange (18) by bolts, six motor frame circular through holes (33) are evenly spaced along the circumferential direction on the hollow cylindrical structure at the lower portion of the motor frame (19), and the steel wire (38) fixed and wound by the winding shaft (7) inside the motor frame (19) passes through the corresponding motor frame circular through holes (33); The lower end surface of the hollow cylindrical structure of the motor frame (19) is provided with a plurality of threaded holes at even intervals, the upper end surface of the circular ring of the base (16) is provided with threaded holes corresponding one to one to the threaded holes on the hollow cylindrical structure of the motor frame (19), and the hollow cylindrical structure of the motor frame (19) is fixedly connected to the upper end surface of the circular ring of the base (16) by bolts.

7. The dual-motor driven automatic tent according to claim 1, characterized in that: The front end of each steel wire (38) exposed above the corresponding winding shaft through hole (34) is fixed by tying a knot, and a pin is inserted into the radial hole (37) on the upper part of the winding shaft just below the winding shaft through hole (34) to tighten and fix the steel wire (38).

8. The dual-motor driven automatic tent according to claim 1, characterized in that: An electric control box (39) is provided above the upper motor (5) and is fixed on the motor housing of the upper motor (5). A rechargeable battery pack and a control circuit connected to the rechargeable battery pack are provided in the electric control box (39). The wiring harness of the upper motor (5) and the wiring harness of the lower motor (6) are both connected to the control circuit to control the forward and reverse rotation of the upper motor (5) and the lower motor (6), thereby realizing the opening and closing actions of the tent.

Images