Tractor for liftable mosquito net
A technology of retractors and mosquito nets, applied in applications, home appliances, other seating furniture, etc., can solve the problems of inconvenient low-cost mass production, difficult and high cost of manufacturing, and not compact enough to achieve simple structure, simple and compact structure, The effect of improving the service life
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Embodiment 1
[0029] As shown in Figures 1 to 3, the retractor of this embodiment includes a housing 1, a central shaft 11, a driven gear 2 that transmits power from a driving gear 13, a reel 10 and a lifting rope 9, The driven gear 2 is connected with the reel 10 and is mounted on the central axis 11 in series, and one end of the lifting rope 9 is connected with the reel 10 and the other end is connected with a traction point of the account body; between the driven gear 2 and the reel 10, a When the pulling force of the lifting rope 9 significantly exceeds the maximum normal pulling force of the lifting rope 9 during the lifting of the tent body, the overload separation device of the power connection and the brake device that prevents the passive reversal of the reel in the tractor will be separated. The overload separation device of this embodiment is made up of bolt wheel 6, constant pressure spring 5, protruding bolt 4, internal gear 7; Bolt wheel 6 is coaxially fixedly connected with dr...
Embodiment 2
[0032] As shown in Figure 4 and Figure 5, this embodiment improves the braking device on the basis of Embodiment 1, the braking device consists of a braking chainring 23, a braking tooth 25, a pin 24, a spline shaft 20, Advance and retreat screw rod 19, fixed nut 18, active toothed disc 21, screw spring 17, passive toothed disc 22; spline shaft 20 is connected with internal gear 7, and its axis hole is matched with central shaft 11; forward and backward screw rod 19 is connected with active toothed disc 21 is fixedly connected, the passive gear plate 22 is fixedly connected with the reel 10, the central hole of the advancing and retreating screw rod 19 is a flower hole matched with the spline shaft 20, the screw rod spring 17, the advancing and retreating screw rod 19, and the driving gear plate 21 are sequentially mounted on the spline On the shaft 20, the fixed nut 18 is fixed on the housing 1, and the screw hole of the fixed nut 18 is screwed in by the forward and backward s...
Embodiment 3
[0035] Such as Figure 6 , Figure 7 As shown, the braking device of this embodiment adopts the method of technical solution 7, and its structure and working principle are not repeated as described in the second embodiment. Connected brake tooth chute 24.1 and the brake tooth 25.1 that cooperates with chute, its groove will face the inwall of housing 1, and the bottom of groove will have the stopper that stops brake tooth 25.1 and can not fall out.
[0036] The overload separation device of this embodiment adopts the method of technical measure 4. One end of the bolt wheel 6 of the overload separation device has an axial hole that cooperates with the central shaft 11, and the other end has a guide hole 6.3, and the bolt hole 6.2 runs through the guide hole 6.3. In the middle of the hole 6.2 there is an axial pressure regulating screw hole 14 penetrating through the end face of the bolt wheel 6, and an axial guide rail 6.4 protrudes from the hole wall of the guide hole 6.3; Th...
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