CN111840946A

CN111840946A - Portable multifunctional ball net rack

Info

Publication number: CN111840946A
Application number: CN202010772369.XA
Authority: CN
Inventors: 韩正好
Original assignee: Henan Vocational College of Applied Technology
Current assignee: Henan Vocational College of Applied Technology
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2020-10-30
Anticipated expiration: 2040-08-04
Also published as: CN111840946B

Abstract

The invention relates to the field of ball net racks, in particular to a portable multifunctional ball net rack. Comprises a ball net rack box body, a folding rod component, an unfolding driving component, a locking device, an unlocking device and a chain driving lifting device; the folding rod assembly is arranged in the ball net rack box body and comprises a folding rod section, a folding rod section and a ball net; the net comprises a first net segment corresponding to the first section of the folding rod, a second net segment corresponding to the second section of the folding rod and a third net segment corresponding to the third section of the folding rod, and the locking device is configured to block the unfolding of the first section of the folding rod, the second section of the folding rod and the third section of the folding rod after the first section of the folding rod, the second section of the folding rod and the third section of the folding rod are folded; the unlocking device is configured to act on the locking device; the chain drives the lifting device to make the folding rod component extend out of the ball net rack box body and contract into the ball net rack box body. Different ball games can be played in different unfolding states, the ball game playing device is small in size, convenient to carry, semi-automatic in unfolding or folding the ball net, and convenient and fast to use.

Description

Portable multifunctional ball net rack

Technical Field

The invention relates to the field of ball net frames, in particular to a portable multifunctional ball net frame, and particularly relates to a ball net frame with adjustable net height and adjustable support height.

Background

Badminton and tennis are popular with people, but cannot be widely popularized due to the limitation of fields and equipment. And the traditional ball net rack is a field-one ball net rack, and the net height and the support height of the ball net rack are fixed. The existing portable multipurpose net rack can refer to Chinese patent document CN109925688A, which discloses a portable multipurpose net rack comprising a base, an angle support seat, two telescopic support rods, two support rods and a net, wherein the base is provided with a slot, the angle support seat comprises a bottom plate and two side plates, the bottom plate is detachably inserted into the slot, and two sides of the two side plates are respectively provided with at least one first through hole; the two telescopic supporting rods are respectively detachably arranged between the two side plates, one end of each telescopic supporting rod is respectively provided with a second through hole, the second through holes correspond to the first through holes, and the other end of each telescopic supporting rod is provided with a rotating angle piece; one end of each of the two support rods is detachably connected with a rotating angle piece; two ends of the net are respectively detachably sleeved on the two support rods. However, in actual use of the net cage in this document, the base is placed on the ground and provided with a handle hole for easy picking. Then stretch and expand two telescopic support rods, when the badminton net rack function is needed, the other end of the rotating angle piece is arranged upwards, the rotating angle piece is fixed through a bolt, and then the two support rods are respectively inserted into the rotating angle piece, so that the assembly of the support rods and the telescopic support rods is completed. And finally, unfolding the net, sewing two ends of the net to form through holes, sleeving two ends of the net on two support rods respectively, supporting and unfolding the net through the two support rods, and completing the assembly of the net and the support rods, thus starting playing the ball. When the tennis net rack function is needed, the corner piece is rotated, and the other end of the corner piece is arranged downwards, so that the two supporting rods are positioned below, the tennis net rotates to the below, and the rapid switching is realized. Because the disassembly and assembly are needed, the use steps are complicated and the use is inconvenient.

Disclosure of Invention

The invention provides a portable multifunctional ball net rack, which aims to solve the problem that the existing ball net rack can not carry out different balls and the problems of difficult carrying and complex installation.

The portable multifunctional ball net rack adopts the following technical scheme:

a portable multifunctional ball net rack comprises a ball net rack box body, a folding rod assembly, an unfolding driving assembly, a locking device, an unlocking device and a chain driving lifting device; the folding rod assembly is arranged in the ball net rack box body and comprises a folding rod section, a folding rod section and a ball net; the upper end of one section of the folding rod is rotatably connected with the lower end of the second section of the folding rod through a shaft, and the upper end of the second section of the folding rod is connected with the lower end of the third section of the folding rod through a shaft; the net comprises a first net segment corresponding to one section of the folding rod, a second net segment corresponding to two sections of the folding rod and a third net segment corresponding to three sections of the folding rod, wherein the first net segment, the second net segment and the third net segment are folded along with the first section of the folding rod, the second section of the folding rod and the third section of the folding rod and are wound on the first section of the folding rod, the second section of the folding rod and the third section of the folding rod after being folded; the unfolding driving component is configured to store force when the folding rod first section, the folding rod second section and the folding rod third section are folded so as to unfold the folding rod first section, the folding rod second section and the folding rod third section; the locking device is configured to block the unfolding of the first folding rod section, the second folding rod section and the third folding rod section after the first folding rod section, the second folding rod section and the third folding rod section are folded; the unlocking device is configured to act on the locking device so that the locking device releases the obstruction to the unfolding of the folding rod first section, the folding rod second section and the folding rod third section; the chain drive lifting device is configured to drive the folding rod assembly to ascend and descend so that the folding rod assembly can extend out of the ball net rack box body and retract into the ball net rack box body.

Furthermore, the unfolding driving assembly comprises a first coil spring and a second coil spring, the first coil spring is arranged at the joint of the first section of the folding rod and the second section of the folding rod, the second coil spring is arranged at the joint of the second section of the folding rod and the third section of the folding rod, the force stored by the first coil spring is used for folding the second section of the folding rod relative to the first section of the folding rod, and the force stored by the second coil spring is used for folding the third section of the folding rod relative to the second section of the folding rod.

Furthermore, the locking device comprises a first convex block, a first contact rod of the coil spring, a second convex block and a second contact rod of the coil spring; the first contact rod of the coil spring is rotatably arranged on one section of the folding rod, a first clamping block is arranged at the right end of the first contact rod of the coil spring, a first protruding block is arranged on the first coil spring, the first clamping block of the first contact rod of the coil spring is matched with the first protruding block, so that after the second section of the folding rod is folded relative to the first section of the folding rod, the first clamping block is arranged at the right end of the first contact rod of the coil spring, and the first protruding block is arranged on the left side of the first clamping block, so; the second contact rod of the coil spring is rotatably arranged on the third folding rod section, one end of the second contact rod of the coil spring is provided with a second clamping block, the second protruding block is arranged on the second coil spring, the second clamping block of the second contact rod of the coil spring is matched with the second protruding block, so that after the third folding rod section is folded relative to the second folding rod section, the second clamping block is positioned at the right end of the second contact rod of the coil spring, and the second protruding block is positioned at the left side of the second clamping block, so that the second coil spring is.

Furthermore, the unlocking device comprises a two-section switch contact rod, a limit buckle, a three-section switch contact rod, a contact rod table, a fixed pulley, an unlocking block, a folding switch rod and a mounting seat; the left side and the right side of the upper surface of the mounting seat are respectively provided with a supporting plate, the fixed pulley is arranged below the contact rod table, the unlocking block is arranged below the fixed pulley, the upper end of the folding switch rod is rotatably arranged below the right end of the unlocking block, the lower end of the folding switch rod is rotatably connected with the upper surface of the mounting seat, the two-section switch contact rod is arranged at the left end of the contact rod table, the three-section switch contact rod is arranged in the middle of the contact rod table, and the limit buckle is arranged at one section of the folding rod and used for guiding the vertical movement of the two-section switch contact rod; the upper surface of the unlocking block is high at the left and low at the right, the left end of the unlocking block is placed at the upper end of the supporting plate at the left side, and when the unlocking block moves to the first position towards the right side, the two-section switch contact rod moves upwards to act on the coil spring contact rod for unlocking; when the unlocking block continues to move to the right to the second position, the three-section switch contact rod acts on the coil spring second contact rod to unlock.

Further, the chain driving lifting device comprises a telescopic rod device and two lifting parts arranged on the left side and the right side of the telescopic rod device, and each lifting part comprises a chain device, a ratchet wheel orienting device, a control rod device, a transmission device and a power device; the folding rod component is arranged at the upper end of the telescopic rod device; the chain device comprises a chain, a chain shaft and a chain wheel; the chain shafts are rotatably arranged on the ball net rack box body, the upper ends of the two chains are respectively arranged on two sides of the upper end of the telescopic rod device, and the two chains are respectively contracted on the two chain shafts and meshed with the chain wheel; the ratchet wheel is rotatably arranged in the ball net rack box body, the ratchet wheel drives the chain wheel and the chain shaft to rotate through the transmission device, and at the same moment, the ratchet wheel only drives one of the chain wheel and the chain shaft to rotate through the transmission device; when the transmission device drives the chain wheel to rotate, the chain wheel drives the chain to unfold, so that the telescopic rod is unfolded, and the upper end of the telescopic rod device and the folding rod assembly on the upper side of the telescopic rod device move upwards; when the transmission device drives the chain shaft to rotate, the chain shaft drives the chain to contract, so that the telescopic rod contracts, and the upper end of the telescopic rod and the folding rod assembly on the upper side of the telescopic rod move downwards; the power device is configured to drive the ratchet wheel to rotate; the ratchet wheel orienting device is arranged on the ball net rack box body and acts on the ratchet wheel to enable the ratchet wheel to rotate only in one direction; the control rod device acts on the ratchet wheel orienting device and the transmission device and is provided with three working gears, so that the ratchet wheel rotates along a first direction under the action of the ratchet wheel orienting device when the first working gear is in a first working gear, and the ratchet wheel drives the chain wheel to rotate through the transmission device; when the chain wheel is in the second working gear, the chain wheel is separated from the chain, the transmission device is separated from the chain shaft, and the ratchet wheel orientation device is driven to act so as to change the direction of the ratchet wheel allowed to rotate; and in the third working gear, the ratchet wheel rotates along a second direction opposite to the first direction under the action of the ratchet wheel orienting device, so that the chain wheel is separated from the chain, and the ratchet wheel drives the chain shaft to rotate through the transmission device.

Furthermore, the power device comprises a hand wheel which is connected with the ratchet wheel through a hand wheel connecting column; the chain wheel is arranged on the control rod, the middle part of each section of the chain is provided with a recess or a guide groove, the chain wheel can be allowed to be separated from the chain under the driving of the control rod, and the transmission device comprises two transmission gears, two chain shaft end face teeth, a limiting connecting rod and a telescopic shaft; the telescopic shaft is telescopically arranged on the ratchet wheel and coaxially rotates along with the ratchet wheel; the two transmission gears are meshed with each other, one transmission gear is arranged on the telescopic shaft, the other transmission gear is arranged on the control rod, one end of the limiting connecting rod is rotatably arranged on the telescopic shaft, the other end of the limiting connecting rod is rotatably arranged on the control rod, and the limiting connecting rod can drive the telescopic shaft to move back and forth when the control rod moves back and forth so as to enable the two transmission gears to be meshed with each other at any time; one chain shaft end face tooth is arranged at the front end of the chain shaft, the other chain shaft end face tooth is arranged at the rear end of the telescopic shaft, and the two chain shaft end face teeth are meshed with each other in the third working gear.

Furthermore, the unlocking device also comprises an unfolding switch which is arranged in the ball net rack box body in a manner of moving left and right and is connected with the unlocking block so as to drive the unlocking block to move left and right.

Furthermore, a ratchet shell is arranged in the ball net rack box body, a ratchet is arranged in the ratchet shell through a ratchet shaft, and a ratchet orientation device is arranged in the ratchet shell; the ratchet shaft is provided with a sliding hole with a backward opening, a telescopic shaft guide rail is arranged in the sliding hole, and the telescopic shaft is slidably arranged on the telescopic shaft guide rail.

The invention has the beneficial effects that: the folding rod assembly comprises a folding rod first section, a folding rod second section, a folding rod third section and a net. The upper end of one section of the folding rod is rotationally connected with the lower end of the second section of the folding rod through a shaft, and the upper end of the second section of the folding rod is connected with the lower end of the third section of the folding rod through a shaft. The unfolding driving component is configured to store force when the folding rod first section, the folding rod second section and the folding rod third section are folded, so that the folding rod first section, the folding rod second section and the folding rod third section are unfolded. The locking device is configured to hinder the unfolding of the first folding rod section, the second folding rod section and the third folding rod section after the first folding rod section, the second folding rod section and the third folding rod section are folded. The unlocking means is configured to act on the locking means so that the locking means unblocks the unfolding of the first folding bar section, the second folding bar section and the third folding bar section. The chain driven lifting device is configured to drive the folding bar assembly up and down. The net comprises a first net section corresponding to one section of the folding rod, a second net section corresponding to two sections of the folding rod and a third net section corresponding to three sections of the folding rod, wherein the first net section, the second net section and the third net section are folded along with the first section of the folding rod, the second section of the folding rod and the third section of the folding rod and are wound on the first section of the folding rod, the second section of the folding rod and the third section of the folding rod after being folded. The ball net rack can be unfolded in different states to perform different ball games, and the three-section folding ball net has the advantages of small volume, portability, semi-automation for unfolding or folding the ball net, convenience and rapidness.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a portable multi-purpose ball net rack according to an embodiment of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is an enlarged view at C of FIG. 1;

FIG. 5 is a schematic view of a regular triangular prism structure of a portable multifunctional ball net rack;

FIG. 6 is an enlarged view taken at D in FIG. 5;

FIG. 7 is a schematic view of the connection of the hand wheel and the ratchet wheel of the portable multifunctional ball net rack;

FIG. 8 is a side view of a portable multi-purpose ball net rack;

fig. 9 is an enlarged view at E in fig. 8;

FIG. 10 is a schematic structural view of a regular triangular prism;

fig. 11 is a side view of a sprocket and a chain of a portable multifunction ball net stand.

1. A ball net rack box body; 401. folding the rod by one section; 402. a folding rod section; 403. folding the pole three-section; 404. a two-stage switch feeler lever; 405, a limit buckle; 406. a three-stage switch feeler lever; 407. a feeler lever stage; 408. a fixed pulley; 409. a folding switch; 410. a first coil spring; 411. a coil spring switch; 412. a feeler lever of the coil spring; 414. a limiting block; 415. a torsion spring; 416. a second coil spring; 417. a second coil spring switch; 420. a coil spring secondary feeler lever; 421. a support plate; 422. a second section of the telescopic rod; 423. a telescopic rod is arranged in the third section; 430. a telescopic rod is provided with four sections; 424. a telescopic shaft shoulder; 425. folding the switch lever; 427. a mounting seat; 428. a deployment switch; 5. a chain; 6. a chain shaft; 601, performing heat treatment on the mixture; a bearing; 602. chain shaft end face teeth; 7. a control lever; 701. a sprocket; 702. a fixing buckle; 703. a transmission gear; 704. a limiting connecting rod; 705. a switch slot; 706. a hand-held block; 801. a first ratchet wheel shell; 802 ratchet wheel; 804. a ratchet wheel positioning rod; 805. a ratchet wheel positioning tooth; 806. a controller connecting rod; 807. a regular triangular prism; 809. a locator turn key; 811. a hand wheel connecting column; 812. a hand wheel; 814. a telescopic shaft guide rail; 815. a telescopic shaft.

Detailed Description

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

As shown in fig. 1, an embodiment of a portable multifunctional ball net rack according to the present invention includes: the tennis net rack box body 1, the folding rod assembly, the unfolding driving assembly, the locking device, the unlocking device and the chain driving lifting device. The folding rod assembly is arranged in the ball net rack box body 1, and comprises a folding rod section 401, a folding rod section 402, a folding rod section 403 and a ball net. The upper end of the first section 401 of the folding rod is rotatably connected with the lower end of the second section 402 of the folding rod through a shaft, and the upper end of the second section 402 of the folding rod is connected with the lower end of the third section 403 of the folding rod through a shaft. The unfolding drive assembly is configured to accumulate force during folding of the folding bar segment 401, the folding bar segment 402 and the folding bar segment 403 for unfolding of the folding bar segment 401, the folding bar segment 402 and the folding bar segment 403. The locking device is configured to hinder the unfolding of the folding bar segment 401, the folding bar segment 402 and the folding bar segment 403 after the folding bar segment 401, the folding bar segment 402 and the folding bar segment 403 are folded. The unlocking means are configured to act on the locking means so that the locking means unblock the unfolding of the folding bar segment 401, the folding bar segment 402 and the folding bar segment 403. The chain driven lifting device is configured to drive the folding bar assembly up and down. So that the folding bar assembly can extend out of the ball net rack box 1 and retract into the ball net rack box 1. The net comprises a first net segment corresponding to the first folding rod segment 401, a second net segment corresponding to the second folding rod segment 402 and a third net segment corresponding to the third folding rod segment 403, wherein the first net segment, the second net segment and the third net segment are folded along with the first folding rod segment 401, the second folding rod segment 402 and the third folding rod segment 403, and are wound on the first folding rod segment 401, the second folding rod segment 402 and the third folding rod segment 403 after being folded.

In this embodiment, the unfolding driving assembly comprises a first coil spring 410 and a second coil spring 416, wherein the first coil spring 410 is arranged at the joint of the first folding rod segment 401 and the second folding rod segment 402, the second coil spring 416 is arranged at the joint of the second folding rod segment 402 and the third folding rod segment 403, the force of the first coil spring 410 is accumulated in the folding of the second folding rod segment 402 relative to the first folding rod segment 401, and the force of the second coil spring 416 is accumulated in the folding of the third folding rod segment 403 relative to the second folding rod segment 402.

In this embodiment, the locking device includes a first tab 411, a second coil spring feeler lever 412, a second tab 417, and a second coil spring feeler lever 420. The first coil spring contact rod 412 is rotatably installed on the first folding rod section 401, a first clamping block is arranged at the right end of the first coil spring contact rod 412, the first protruding block 411 is installed on the first coil spring 410, the first clamping block of the first coil spring contact rod 412 is matched with the first protruding block 411, so that after the second folding rod section 402 is folded relative to the first folding rod section 401, the first clamping block is located at the right end of the first coil spring contact rod 412, and the first protruding block 411 is located on the left side of the first clamping block to block the first coil spring 410 from moving under the blocking effect of the first. The coil spring two-touch rod installation 420 can rotatably fold the rod three sections 403, one end of the coil spring two-touch rod 420 is provided with a second clamping block, the second protruding block 417 is installed on the second coil spring 416, the second clamping block of the coil spring two-touch rod 420 is matched with the second protruding block 417, so that after the folding rod three sections 403 are folded relative to the folding rod two sections 402, the second clamping block is positioned at the right end of the coil spring two-touch rod 420, and the second protruding block 417 is positioned at the left side of the second clamping block to block the movement of the second coil spring 416 under the blocking effect.

In this embodiment, the locking device further includes a torsion spring 415, a stopper 414, and a spring 429. The stopper 414 is installed on one section 401 of the folding rod, the torsion spring 415 is installed on the rotation shaft of the coil spring one-touch rod 412, one end of the torsion spring is connected with the coil spring one-touch rod 412, and the other end acts on the stopper so as to keep the coil spring one-touch rod 412 horizontal. One end of a spring 429 is mounted at the right end of the coil spring two-touch rod 420, and the other end of the spring 429 is mounted at the folding rod three-segment 403. The coil spring two contact rod 420 is kept horizontal by the restoring force of the spring 429.

In this embodiment, the unlocking device includes a two-stage switch contact lever 404, a limit buckle 405, a three-stage switch contact lever 406, a contact lever table 407, a fixed pulley 408, an unlocking block 409, a folding switch lever 425, and a mounting base 427. The left and right sides of the upper surface of the mounting seat 427 are provided with supporting plates 421. The fixed pulley 408 is installed below the feeler lever stand 407, the unlocking block 409 is installed below the fixed pulley 408, the upper end of the folding switch lever 425 is rotatably installed below the right end of the unlocking block 409, the lower end of the folding switch lever 425 is rotatably connected with the upper surface of the mounting seat 427, the two-stage switch feeler lever 404 is installed at the left end of the feeler lever stand 407, and the three-stage switch feeler lever 406 is installed in the middle of the feeler lever stand 407. The limit buckle 405 is mounted on the first section 401 of the folding bar and is used for guiding the second section switch contact rod 404. The upper surface of the unlocking block 409 is high at the left and low at the right, the left end of the unlocking block 409 is placed at the upper end of the supporting plate at the left side, and when the unlocking block 409 moves to the first position towards the right, the two-section switch contact rod 404 moves upwards to act on the coil spring contact rod 412 for unlocking; when the unlocking block 409 moves to the right to the second position, the three-segment switch contact lever 406 acts on the coil spring second contact lever 420 to unlock. The two-stage switch contact lever 404, the three-stage switch contact lever 406, the contact lever table 407, and the fixed pulley 408 are raised and lowered along with the folding lever assembly.

In this embodiment, the chain-driven lifting device includes a telescopic rod device and two lifting portions disposed on the left and right sides of the telescopic rod device, and the lifting portions include a chain device, a ratchet wheel orientation device, a control rod device, a transmission device, and a power device. The folding rod component is arranged at the upper end of the telescopic rod device. The chain device comprises a chain 5, a chain shaft 6, a chain wheel 701 and a bearing 601. The upper ends of the two chains 5 are respectively arranged at the two sides of the upper end of the telescopic rod device. The two chains 5 are respectively contracted on the two chain shafts 6 and meshed with the chain wheel 701, and the chain shafts 6 are rotatably mounted on the ball net rack box body 1 through bearings 601. The ratchet 802 is rotatably mounted on the ball net rack box 1, the ratchet 802 drives the chain wheel 701 and the chain shaft 6 to rotate through the transmission device, and at the same time, the ratchet drives only one of the chain wheel 701 and the chain shaft 6 to rotate through the transmission device. When the transmission device drives the chain wheel 701 to rotate, the chain wheel 701 drives the chain to unfold so that the telescopic rod is unfolded, and then the upper end of the telescopic rod device and the folding rod assembly on the upper side of the telescopic rod device move upwards. When the transmission device drives the chain shaft 6 to rotate, the chain shaft 6 drives the chain to contract so as to contract the telescopic rod, and then the upper end of the telescopic rod and the folding rod assembly on the upper side of the telescopic rod move downwards. The power device is configured to drive the ratchet wheel to rotate. The ratchet wheel orienting device is arranged on the box body and acts on the ratchet wheel to enable the ratchet wheel to rotate only in one direction. The control rod device acts on the ratchet wheel orientation device and the transmission device and is provided with three working gears, so that when the first working gear is in a first working gear, the ratchet wheel rotates along a first direction under the action of the ratchet wheel orientation device, and the ratchet wheel is driven 701 to rotate through the transmission device; in the second working gear, the ratchet wheel orienting device is driven to act so that the ratchet wheel orienting device changes the direction of allowing the ratchet wheel to rotate, the chain wheel 701 is separated from the chain 5, and the transmission device is separated from the chain shaft 6; in the third operating position, the ratchet 802 is rotated in a second direction opposite to the first direction under the action of the ratchet orienting device, so that the chain wheel 701 is separated from the chain 5, and the ratchet drives the chain shaft 6 to rotate through the transmission device. The chain driven lifting device also has a guide rail or channel that keeps the chain 5 in a vertical position at all times during the unwinding process.

In this embodiment, the lever assembly includes a lever 7 rotatably mounted to the ball rack housing 1, a hand piece 706, a switch slot 705, a gear feedback key 708, a gear feedback key spring 709, and a retaining buckle 702. The switch slot 705 is installed on the ball net rack box 1, the control rod 7 passes through the switch slot 705, and the gear feedback key 708 and the gear feedback key spring 709 are installed on the rear side of the control rod 7. The fixing buckle 702 is installed in the tennis net rack case 1, and is provided with a fixing hole in the front-rear direction, the inner surface of the fixing hole is provided with 3 annular gear grooves 707, and the rear end of the control rod 7 is rotatably installed in the fixing hole. The range feedback key 708 is inserted into a circumferential range groove 707 by a range feedback key spring 709 to position an operating range of the lever mechanism. The hand-held block 706 is mounted to the front end of the control rod 7, and in the third operating range, the hand-held block 706 is inserted into the switch slot 705.

In this embodiment, the ratchet orientation device is disposed on the upper side of the ratchet 802, and the ratchet orientation device includes two ratchet positioning rods 804, ratchet positioning teeth 805, a controller connecting rod 806, a regular triangular prism 807 whose axis extends in the front-back direction, and a positioner steering key 809. A through hole is opened in the regular triangular prism 807, the positioner steering key 809 is installed on the wall surface of the through hole, the ratchet positioning teeth 805 are installed on the lower end surface of the ratchet positioning rod 804, the upper end of the controller connecting rod 806 is installed on the ball grid rack box 1, and the upper ends of the two ratchet positioning rods 804 are all rotatably installed on the ball grid rack box 1. A regular triangular prism 807 is located at the lower end of the controller connecting rod 806, the regular triangular prism 807 being located between the two ratchet positioning rods 804 and being in contact with the two ratchet positioning rods 804. The control rod 7 is provided with a push block, the control rod 7 penetrates through a through hole in the regular triangular prism 807, when the second gear is in a second gear, the push block is attached to a positioner steering key 809 to drive the regular triangular prism 807 to rotate, so that the lower end of one ratchet positioning rod 804 is lifted, the lower end 805 of the ratchet positioning rod 804 is separated from the ratchet wheel, the lower end of the other ratchet positioning rod 804 falls, the lower end 805 of the other ratchet positioning rod 804 is meshed with the ratchet wheel, and the direction allowing the ratchet wheel to rotate in a single direction is changed.

In this embodiment, the power device includes a hand wheel 812, and the hand wheel 812 is connected to the ratchet 802 via a hand wheel connection post 811. The sprocket 701 is mounted to the control rod 7 and, as shown in fig. 11, the middle of each link of the chain has a recess or channel that allows the sprocket 701 to be disengaged from the chain by the control rod 7. The transmission device comprises two transmission gears 703, two chain shaft end face teeth 602, a limiting connecting rod 704 and a telescopic shaft. The telescopic shaft is telescopically arranged on the ratchet wheel and coaxially rotates along with the ratchet wheel. Two driving gears 703 are meshed with each other, one driving gear 703 is installed on a telescopic shaft 815, the other driving gear 703 is installed on a control rod 7, one end of a limiting connecting rod 704 is rotatably installed on the telescopic shaft 815, the other end of the limiting connecting rod 704 is rotatably installed on the control rod 7, and the limiting connecting rod 704 can drive the telescopic shaft 815 to move back and forth when the control rod 7 moves back and forth so that the two driving gears 703 are meshed at any time. One chain shaft end face tooth 602 is mounted at the front end of the chain shaft 6, the other chain shaft end face tooth 602 is mounted at the rear end of the telescopic shaft 815, the two chain shaft end face teeth 602 are meshed with each other in the third working gear, and at the moment, the chain wheel 701 moves backwards under the action of the control rod 7 and then is separated from the chain wheel 701. In the second working gear, the sprocket 701 moves backward under the action of the control lever 7 and then is separated from the sprocket 701, and a certain interval is formed between two chain shaft end face teeth 602.

In this embodiment, the telescopic rod device comprises a two-section telescopic rod 422, a three-section telescopic rod 423 and a four-section telescopic rod 430. The two telescopic rod sections 422 are sleeved outside the mounting seat 427, the three telescopic rod sections 423 are sleeved outside the two telescopic rod sections 422, and the four telescopic rod sections 430 are sleeved outside the three telescopic rod sections 423. The outer sides of the mounting seat 427, the two telescopic rod sections 422 and the three telescopic rod sections 423 are all provided with telescopic shaft shoulders 424. When the telescopic rod stretches, the telescopic rod on the outer side moves, and at the moment, the telescopic rod section on the outer side and the telescopic rod section on the inner side are connected in a matched mode through the telescopic shaft shoulder 424. When the outer telescopic rod rises to the limit height, the telescopic shaft shoulder 424 is used for blocking the outer telescopic rod, and the outer telescopic rod and the inner telescopic rod are prevented from being disconnected. Because the left end of the unlocking block 409 is placed at the upper end of the left supporting plate and is also positioned at the upper ends of the two telescopic rod sections 422, the three telescopic rod sections 423 and the four telescopic rod sections 430, when the unlocking block 409 is not moved, the expansion of the telescopic rod device can be prevented, namely the lifting of the folding rod assembly is prevented, and the lifting of the telescopic rod device and the folding rod assembly caused by the rotation of the ratchet wheel due to misoperation is prevented. When the unlocking block 409 is located at the first position and the second position, the extension of the telescopic rod device is not affected.

In this embodiment, the unlocking device further includes an unfolding switch 428, the unfolding switch 428 is installed in the rack box 1 in a manner of moving left and right, and is connected to the folding control switch 409 to drive the unlocking block 409 to move left and right. A ratchet shell is arranged in the ball net rack box body 1, a ratchet is arranged in the ratchet shell through a ratchet shaft, and a ratchet orienting device is arranged in the ratchet shell. The ratchet shaft is provided with a slide hole with a backward opening, a telescopic shaft guide rail 814 is arranged in the slide hole, and the telescopic shaft 815 is slidably arranged on the telescopic shaft guide rail 814.

When the hand-held block 706 is at the outermost edge and is in the first operating position, the gear feedback key 708 is located in the annular gear groove 707 at the forefront of the through hole, and the sprocket 701 is engaged with the chain 5. Sliding the deployment switch 428 into the proper position moves the unlocking block 409 into the proper position, such as the first position or the second position, where the folding bar assembly does not deploy with the net wrapped. Clockwise rotation of the left hand wheel 812 rotates the ratchet wheel 802, counterclockwise rotation of the right hand wheel 812 rotates the ratchet wheel 802, the ratchet wheel 802 drives the telescopic shaft 815 to rotate, and the telescopic shaft 815 generates rotatable force on the chain device through the two transmission gears 703, the control rod 7 and the chain wheel 701, so that the telescopic rod device and the folding rod assembly are lifted. After the folding rod assembly extends out of the net rack box body 1, the net section wound on the folding rod assembly is unfolded, then the folding rod assembly is unfolded under the action of the unfolding driving assembly, and the net section corresponding to the net is immediately unfolded. The ratchet wheel orientation device prevents the ratchet wheel from reversing when the ratchet wheel rotates for a certain angle, so that the ratchet wheel can not descend under the action of the gravity of the folding rod assembly.

When the folding rod assembly needs to descend, the net is folded along with the folding rod assembly in sequence, the folding rod assembly is kept in a folded state under the action of the locking device, and the net is wound on the folded folding rod assembly after the folding is finished. Then the control rod 7 is pushed to move backwards, so that the chain wheel 701 and the chain 5 are staggered and no longer engaged, and when the hand-held block 706 is in the second working gear position, the control rod 7 is rotated to drive the regular triangular prism 807 of the ratchet wheel orientation device to change the direction of the allowable rotation of the ratchet wheel 802. When the ratchet orienting device is adjusted, the control rod 7 is pushed to enable the handheld block 706 to be in the third working gear, the two face gears 602 are meshed, the hand wheel 812 is rotated to move the ratchet 802 at the moment, the chain shaft 6 is driven by the ratchet shaft to rotate, the chain 5 is retracted, the telescopic rod device and the folding rod assembly are further lowered, and the whole mechanism is retracted into the ball net rack box body 1.

When the folding bar assembly is again required to be raised, the control lever 7 is pulled to move forward to disengage the two face gears 602 and disengage them, and when the hand piece 706 is in the second operating position, the control lever 7 is rotated to drive the regular triangular prism 807 of the ratchet wheel orientation device to change the direction of the allowed rotation of the ratchet wheel 802. When the ratchet wheel orientation device is adjusted, the control rod 7 is pulled to enable the handheld block 706 to be in the first working gear, so that the chain wheel 701 is meshed with the chain 5, and at the moment, the hand wheel 812 is rotated to move the ratchet wheel 802 to drive the chain wheel 701 to rotate.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a portable multi-functional ball net frame which characterized in that: comprises a ball net rack box body, a folding rod component, an unfolding driving component, a locking device, an unlocking device and a chain driving lifting device; the folding rod assembly is arranged in the ball net rack box body and comprises a folding rod section, a folding rod section and a ball net; the upper end of one section of the folding rod is rotatably connected with the lower end of the second section of the folding rod through a shaft, and the upper end of the second section of the folding rod is connected with the lower end of the third section of the folding rod through a shaft; the net comprises a first net segment corresponding to one section of the folding rod, a second net segment corresponding to two sections of the folding rod and a third net segment corresponding to three sections of the folding rod, wherein the first net segment, the second net segment and the third net segment are folded along with the first section of the folding rod, the second section of the folding rod and the third section of the folding rod and are wound on the first section of the folding rod, the second section of the folding rod and the third section of the folding rod after being folded; the unfolding driving component is configured to store force when the folding rod first section, the folding rod second section and the folding rod third section are folded so as to unfold the folding rod first section, the folding rod second section and the folding rod third section; the locking device is configured to block the unfolding of the first folding rod section, the second folding rod section and the third folding rod section after the first folding rod section, the second folding rod section and the third folding rod section are folded; the unlocking device is configured to act on the locking device so that the locking device releases the obstruction to the unfolding of the folding rod first section, the folding rod second section and the folding rod third section; the chain drive lifting device is configured to drive the folding rod assembly to ascend and descend so that the folding rod assembly can extend out of the ball net rack box body and retract into the ball net rack box body.

2. The portable multifunctional ball net rack according to claim 1, characterized in that: the unfolding driving assembly comprises a first coil spring and a second coil spring, the first coil spring is arranged at the joint of the first section of the folding rod and the second section of the folding rod, the second coil spring is arranged at the joint of the second section of the folding rod and the third section of the folding rod, the force stored by the first coil spring is used for folding the second section of the folding rod relative to the first section of the folding rod, and the force stored by the second coil spring is used for folding the third section of the folding rod relative to the second section of the.

3. The portable multifunctional ball net rack according to claim 2, characterized in that: the locking device comprises a first projection, a first contact rod of the coil spring, a second projection and a second contact rod of the coil spring; a first contact rod of the coil spring is rotatably arranged on one section of the folding rod, a first clamping block is arranged at the right end of the first contact rod of the coil spring, a first protruding block is arranged on the first coil spring, and the first clamping block of the first contact rod of the coil spring is matched with the first protruding block, so that after the second section of the folding rod is folded relative to the first section of the folding rod, the first protruding block is positioned on the left side of the first clamping block, and the first coil spring is blocked from moving under the; the second contact rod of the coil spring is rotatably arranged on the third folding rod section, one end of the second contact rod of the coil spring is provided with a second clamping block, the second protruding block is arranged on the second coil spring, the second clamping block of the second contact rod of the coil spring is matched with the second protruding block, so that after the third folding rod section is folded relative to the second folding rod section, the second clamping block is positioned at the right end of the second contact rod of the coil spring, and the second protruding block is positioned at the left side of the second clamping block, so that the second coil spring is.

4. A portable multi-functional ball net mount according to claim 3, wherein: the unlocking device comprises a two-section switch contact rod, a limit buckle, a three-section switch contact rod, a contact rod table, a fixed pulley, an unlocking block, a folding switch rod and a mounting seat; the left side and the right side of the upper surface of the mounting seat are respectively provided with a supporting plate, the fixed pulley is arranged below the contact rod table, the unlocking block is arranged below the fixed pulley, the upper end of the folding switch rod is rotatably arranged below the right end of the unlocking block, the lower end of the folding switch rod is rotatably connected with the upper surface of the mounting seat, the two-section switch contact rod is arranged at the left end of the contact rod table, the three-section switch contact rod is arranged in the middle of the contact rod table, and the limit buckle is arranged at one section of the folding rod and used for guiding the vertical movement of the two-section switch contact rod; the upper surface of the unlocking block is high at the left and low at the right, the left end of the unlocking block is placed at the upper end of the supporting plate at the left side, and when the unlocking block moves to the first position towards the right side, the two-section switch contact rod moves upwards to act on the coil spring contact rod for unlocking; when the unlocking block continues to move to the right to the second position, the three-section switch contact rod acts on the coil spring second contact rod to unlock.

5. The portable multifunctional ball net rack according to claim 4, characterized in that: the chain driving lifting device comprises a telescopic rod device and two lifting parts arranged on the left side and the right side of the telescopic rod device, and each lifting part comprises a chain device, a ratchet wheel orienting device, a control rod device, a transmission device and a power device; the folding rod component is arranged at the upper end of the telescopic rod device; the chain device comprises a chain, a chain shaft and a chain wheel; the chain shafts are rotatably arranged on the ball net rack box body, the upper ends of the two chains are respectively arranged on two sides of the upper end of the telescopic rod device, and the two chains are respectively contracted on the two chain shafts and meshed with the chain wheel; the ratchet wheel is rotatably arranged in the ball net rack box body, the ratchet wheel drives the chain wheel and the chain shaft to rotate through the transmission device, and at the same moment, the ratchet wheel only drives one of the chain wheel and the chain shaft to rotate through the transmission device; when the transmission device drives the chain wheel to rotate, the chain wheel drives the chain to unfold, so that the telescopic rod is unfolded, and the upper end of the telescopic rod device and the folding rod assembly on the upper side of the telescopic rod device move upwards; when the transmission device drives the chain shaft to rotate, the chain shaft drives the chain to contract, so that the telescopic rod contracts, and the upper end of the telescopic rod and the folding rod assembly on the upper side of the telescopic rod move downwards; the power device is configured to drive the ratchet wheel to rotate; the ratchet wheel orienting device is arranged on the ball net rack box body and acts on the ratchet wheel to enable the ratchet wheel to rotate only in one direction; the control rod device acts on the ratchet wheel orienting device and the transmission device and is provided with three working gears, so that the ratchet wheel rotates along a first direction under the action of the ratchet wheel orienting device when the first working gear is in a first working gear, and the ratchet wheel drives the chain wheel to rotate through the transmission device; when the chain wheel is in the second working gear, the chain wheel is separated from the chain, the transmission device is separated from the chain shaft, and the ratchet wheel orientation device is driven to act so as to change the direction of the ratchet wheel allowed to rotate; and in the third working gear, the ratchet wheel rotates along a second direction opposite to the first direction under the action of the ratchet wheel orienting device, so that the chain wheel is separated from the chain, and the ratchet wheel drives the chain shaft to rotate through the transmission device.

6. The portable multifunctional ball net rack according to claim 5, characterized in that: the control rod device comprises a control rod, a gear feedback key spring and a fixing buckle, wherein the control rod is rotatably arranged in the ball net rack box body in a back-and-forth moving mode; a gear feedback key and a gear feedback key spring are arranged on the rear side of the control rod; the fixed button is installed in the ball net rack box body, and is provided with the fixed orifices of fore-and-aft direction, and the internal surface of fixed orifices is provided with 3 annular gear grooves, and the rear end of control lever rotationally installs in the fixed orifices, and the gear feedback key inserts an annular gear groove under the effect of gear feedback key spring to fix a position a work gear of control lever apparatus.

7. The portable multifunctional ball net rack according to claim 6, characterized in that: the ratchet wheel orientation device is arranged above the ratchet wheel and comprises two ratchet wheel positioning rods, ratchet wheel positioning teeth, a controller connecting rod, a regular triangular prism and a positioner steering key, wherein the axis of the regular triangular prism extends in the front-back direction; the right triangular prism is provided with a through hole, the positioner steering key is arranged on the wall surface of the through hole, the ratchet positioning teeth are arranged on the lower end surfaces of the ratchet positioning rods, the upper end of the controller connecting rod is arranged on the ball net rack box body, and the upper ends of the two ratchet positioning rods are rotatably arranged on the ball net rack box body; the positive triangular prism is arranged at the lower end of the controller connecting rod, is positioned between the two ratchet wheel positioning rods and is in contact with the two ratchet wheel positioning rods; the control rod is provided with a push block, the control rod penetrates through a through hole in the regular triangular prism, and the control rod acts on the steering key of the positioner through the push block to drive the regular triangular prism to rotate when the second working gear is in a second working gear.

8. The portable multifunctional ball net rack according to claim 7, characterized in that: the power device comprises a hand wheel which is connected with the ratchet wheel through a hand wheel connecting column; the chain wheel is arranged on the control rod, the middle part of each section of the chain is provided with a recess or a guide groove, the chain wheel can be allowed to be separated from the chain under the driving of the control rod, and the transmission device comprises two transmission gears, two chain shaft end face teeth, a limiting connecting rod and a telescopic shaft; the telescopic shaft is telescopically arranged on the ratchet wheel and coaxially rotates along with the ratchet wheel; the two transmission gears are meshed with each other, one transmission gear is arranged on the telescopic shaft, the other transmission gear is arranged on the control rod, one end of the limiting connecting rod is rotatably arranged on the telescopic shaft, the other end of the limiting connecting rod is rotatably arranged on the control rod, and the limiting connecting rod can drive the telescopic shaft to move back and forth when the control rod moves back and forth so as to enable the two transmission gears to be meshed with each other at any time; one chain shaft end face tooth is arranged at the front end of the chain shaft, the other chain shaft end face tooth is arranged at the rear end of the telescopic shaft, and the two chain shaft end face teeth are meshed with each other in the third working gear.

9. The portable multifunctional ball net rack according to claim 8, characterized in that: the unlocking device further comprises an unfolding switch which is arranged in the ball net rack box body in a left-right moving mode and is connected with the unlocking block so as to drive the unlocking block to move left and right.

10. The portable multifunctional ball net rack according to claim 9, characterized in that: a ratchet shell is arranged in the ball net rack box body, a ratchet is arranged in the ratchet shell through a ratchet shaft, and a ratchet orienting device is arranged in the ratchet shell; the ratchet shaft is provided with a sliding hole with a backward opening, a telescopic shaft guide rail is arranged in the sliding hole, and the telescopic shaft is slidably arranged on the telescopic shaft guide rail.