Light fitting with cylinder deflection preventing structure

Abstract

The invention relates to a light fitting with a cylinder deflection preventing structure, which comprises a base plate, a backstay fixing seat, a vertical and horizontal pushing mechanism and a lifting cylinder, wherein the backstay fixing seat and the vertical and horizontal pushing mechanism are fixed on the base plate; the backstay fixing seat comprises a pedestal and two corresponding supporting arms protruded on the pedestal; the pedestal and the two supporting arms form an accommodation groove; one end of the lifting cylinder is connected with the light fitting and a holder, while the other end is connected to a connecting part in the accommodation groove of the backstay fixing seat in a rotating way; the side edge, close to the backstay fixing seat, on the base plate is protruded with a reinforced edge; one side, close to the reinforced edge, on the pedestal of the backstay fixing seat is also provided with a deflection preventing unit; and one end of the deflection preventing unit is fixed on the pedestal, while the other end is pressed against the reinforced edge. Under the combined action of the reinforced edge and the deflection preventing unit, the phenomenon of cylinder deflection caused by the slippage of the backstay fixing seat is avoided, and the reliability of the light fitting is enhanced.

Description

technical field [0001] The invention relates to a structure for preventing deflection, in particular to a lamp with a structure for preventing deflection of a cylinder. Background technique [0002] The vehicle-mounted liftable lamp 3 can be installed on a car or a fixed object, can be automatically lifted and reset, is easy to operate and use, and has the function of omnidirectional positioning. It has been widely used in satellite news interview vehicles, broadcast vehicles, military, and public security command Vehicles, emergency communication vehicles and other special vehicles and other types of vehicles. [0003] Such as figure 1 and figure 2 As shown, they are respectively the rear view of the lamp without the anti-deflection unit in the prior art and the top view of the deflected lifting cylinder after long-term use. The mast fixing seat 20 of the traditional vehicle-mounted lighting lamp 3 is fixed in the vertical direction. Bolts (211, 213, 214, 216) are fixed...

AI Technical Summary

Problems solved by technology

[0003] like figure 1 and figure 2 As shown, they are respectively the rear view of the lamp without the anti-deflection unit in the prior art and the top view of the deflected lifting cylinder after long-term use. The mast fixing seat 20 of the traditional vehicle-mounted lighting lamp 3 is fixed in the vertical direction. Bolts (211, 213, 214, 216) are fixed on the lamp chassis 10, the contact between the mast holder 20 and the chassis 10 is a plane, and the fixing bolts (211, 213, 214, 216) can only make the gap between the two Produces limited frictional force, and in actual use, due to the heavy weight of the lamp head and lamp holder (not shown in the figure), under the action of the lever principle, if the lifting cylinder 40 is to be erected, the gear 60 will be subjected to extreme pressure. Large force, before the gear 60 starts to rotate, the force received by the gear 60 in the horizontal direction often exceeds the friction force between the chassis 10 and the mast holder 20, so that the mast holder 20 slides in the Z direction, and finally causes the cylinder 40 to deflect. As a result, the lamp head (not shown in the figure) falls below the specified position and gets stuck, making the entire set of lamps 3 invalid

[0004] And because the bolts (211, 213, 214, 216) that fix the mast holder 20 are difficult to adjust after the lifting cylinder is assembled, even if adjusted, they will deflect after a period of use, reducing the reliability and maintainability of the lamp 3

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