Utility model content
In view of this, the purpose of this utility model is that proposing one can take down the exhibits tent bracket, and Movement transmit is smooth and easy, can reduce the stuck fault of transmission mechanism.
The one provided based on above-mentioned purpose the utility model can be taken down the exhibits tent bracket, comprise base and be arranged at the transmission mechanism on base, described transmission mechanism comprises two and is set in parallel in the threaded screw rod on base, two screws and two control stick groups, described screw coordinates with the thread segment of described threaded screw rod, each screw respectively with one described control stick group one end hinged;
Two described control stick group other ends are hinged with same single u-shaped bar respectively, and described U-shaped bar two ends are hinged on base;
Two described threaded screw rods to move to transmit by being connected with the vertically disposed transition axis of threaded screw rod, guarantee that two threaded screw rods are synchronized with the movement, each described threaded screw rod one end arranges first bevel gear, and these two first bevel gears engage with second bevel gear at described transition axis two ends respectively; One in described two threaded screw rods is connected with driving mechanism.
Preferably, described threaded screw rod only has interlude to have screw thread, and respectively there is a back-up block at thread segment two ends.
Preferably, described driving mechanism is direct drive mechanism or indirect drive mechanism.
Preferably, described direct drive mechanism comprises a crank coordinated with the end face of described threaded screw rod.
Preferably, described indirect drive mechanism comprises gear train and motor, the output gear that described gear train comprises the driven wheel be arranged on described threaded screw rod, is arranged on the transition gear on Corner Link and is arranged on the axle of described motor, wherein said driven wheel engages with described transition gear, and described output gear engages with described transition gear.
Preferably, described tent bracket of taking down the exhibits also comprises rear bar, and the two ends of described rear bar are hinged on described base;
Described in each, control stick group comprises action bars parallel in pairs, the two end portions of described rear bar respectively between the action bars parallel in pairs of two control stick groups through extension and freely-movable described action bars parallel in pairs;
Described rear bar is one or more.
Preferably, described tent bracket of taking down the exhibits also comprises front bar and connecting rod, and described front bar is hinged on described base, described connecting rod one end is hinged in described front bar, the other end is provided with buckle, and when described tent bracket of taking down the exhibits launches, described buckle is buckled on described U-shaped bar.
Preferably, described U-shaped bar to be linked together the U-shaped bar formed or the U-shaped bar of forming one piece by many bars.
Preferably, the both sides along each described screw direction of motion respectively arrange a travel switch.
Preferably, described transmission mechanism and driving mechanism hide be arranged at described base surrounding border tube in.
The taken down the exhibits tent bracket that the utility model provides, Movement transmit is smooth and easy, can reduce the stuck fault of transmission mechanism.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
As a preferred embodiment, tent support structure of originally can taking down the exhibits is simple, and transmission mechanism is rationally effective, operates steadily, with low cost, long service life.
As shown in Figure 1, this tent bracket of can taking down the exhibits comprises 1, base, and 2, control stick group, 3, screw, 4, threaded screw rod, 5, U-shaped bar, 6, rear bar, 7, front bar, 8, connecting rod, the 9, first bevel gear, the 10, second bevel gear, 11, transition axis, 12, driven wheel, 13, transition gear, 14, output gear, 15, motor, 16, crank, 17, buckle, 18, back-up block, 19, travel switch, 20, the first border tube, the 21, second border tube, 22, Corner Link.
As shown in Figure 2, U-shaped bar 5 two ends of the taken down the exhibits tent bracket of the present embodiment are hinged on base 1, article two, threaded screw rod 4 is set in parallel on base 1, article two, threaded screw rod 4 is respectively equipped with screw 3, two screws 3 are hinged with the bottom of two groups of control stick groups 2 respectively, and the top of two groups of control stick groups 2 is hinged with U-shaped bar 5 respectively.
In the present embodiment, U-shaped bar 5 is forming one piece, also can be the U-shaped bar that many bars are formed in other cases; Threaded screw rod 4 is hidden in the first border tube 20 of base 1; Rear bar 6 two ends are hinged on base 1, and each control stick group 2 comprises action bars parallel in pairs, the two end portions of rear bar 6 respectively between the action bars parallel in pairs of two control stick groups 2 through extension and freely-movable action bars parallel in pairs; Rear bar 6 can be one, also can be many.
As shown in Figure 3, when threaded screw rod 4 rotates, screw 3 threadingly screw mandrel 4 moves axially, and the control stick group 2 be hinged on screw 3 also moves with screw 3, when control stick group 2 moves and erects, drives U-shaped bar 5 to launch, when control stick group 2 is toppled over, drives the folding of U-shaped bar 5.
As shown in Figure 4, indeformable at work for ensureing threaded screw rod 4, only processing part screw thread on threaded screw rod 4, and two back-up blocks 18 are set at screw thread two ends, this back-up block 18 is supported on base 1.
Threaded screw rod 4 and screw 3 and control stick group 2 form one group of transmission mechanism, the utility model comprises two groups of these type of transmission mechanisms, as shown in Figure 5, two groups of transmission mechanisms are connected with the second bevel gear 10 be arranged on transition axis 11 by the first bevel gear 9 be arranged on threaded screw rod 4, the synchronized movement of one group of transmission mechanism is delivered to another group transmission mechanism, realize Liang Zu mechanism to be synchronized with the movement, ensure U-shaped bar 5 synchronous expansion and folding.
The utility model adopts the bevel gear of same model on threaded screw rod 4 and transition axis 11, and structure is simple, saves production cost.
In the present embodiment, transition axis 11 and the second bevel gear 10 disposed thereon form movement transferring and are hidden in the second border tube 21 of base 1 surrounding.
A threaded screw rod 4 is connected with driving mechanism, and this driving mechanism can be direct drive mechanism or indirect drive mechanism.
Direct drive mechanism is crank 16 double thread screw mandrel 4 Direct driver utilizing to coordinate with threaded screw rod 4 end face, when needs Direct driver, crank 16 is inserted threaded screw rod 4, rotate crank 16, threaded screw rod 4 rotates, drive screw 3 and the control stick group 2 be connected thereon threadingly screw mandrel 4 move axially, and now back-up block 18 is used as limited block, controls the stroke of main story and reversion.
Indirect drive mechanism comprises a gear train and a motor 15, as shown in Figure 6, gear train comprises a driven wheel 12 be arranged on threaded screw rod 4, an output gear 14 being arranged on the transition gear 13 on Corner Link 22 and being arranged on motor shaft, driven wheel 12 and transition gear 13 engage, and transition gear 13 and output gear 14 engage.When needs drive indirectly, open motor 15, the motor shaft of motor 15 drives output gear 14 mounted thereto to rotate, by being arranged on the transition gear 13 on Corner Link 22, transmit motion to the driven wheel 12 be arranged on threaded screw rod 4, drive screw 3 and control stick group 2 disposed thereon threadingly screw mandrel 4 move axially.A travel switch 19 is respectively set in the both sides of screw 3 direction of motion, controls the stroke of motor 15 main story and reversion.
As shown in Figure 7, in the present embodiment, tent bracket of can taking down the exhibits also comprises front bar 7 and connecting rod 8, front bar 7 two ends are hinged on base 1, connecting rod 8 one end is hinged in front bar 7, the other end with buckle 17, after tent bracket is opened, be stuck in by the buckle 17 of connecting rod 8 one end on U-shaped bar 5, the relatively U-shaped bar 5 of front bar 7 is fixed.When needs folding tent bracket, taken off from U-shaped bar 5 by the buckle 17 of connecting rod 8 one end, front bar 7 is free to rotate.
As shown in Figure 7,8, during tent folding, control stick group 2 is poured onto to be set level, and front bar 6, U-shaped bar 5 and rear bar 7 are all stacked on base 1.
The taken down the exhibits tent bracket that the present embodiment provides, adopt above-mentioned cradling piece structure, enhance the stationarity of screw 3 and threaded screw rod 4 transmission, adopt transition axis 11 transmission between two threaded screw rods 4, and arrange bevel gear in junction, the bevel gear of employing is same size, structure is simple, with low cost, enhance the stationarity of transmission, increase the service life.
Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle; any amendment of making, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.