Background technology
In the past, the method for clamping annex normally adopted metal fixture on the fire fighting truck, though solid and reliable, have following shortcoming: 1, versatility is poor.The annex of every kind of specification all will have special fixture, can't adapt to the present situation that fire-fighting annex specification is various, customer demand is changeable.2, complex structure.Complex mechanical construction causes design, production cost height, uses, safeguards inconvenience, and take bigger installing space.3, damage the fire fighting truck annex easily.Time is long slightly, and annex is gently then black and blue, the heavy then disconnected residual arm of leg.4, the clamping of incompatibility annex in irregular shape needs.
Recently, the mode of more employing has three kinds: the one, and rubber or plastic clamp, the same metal fixture of shortcoming, and easily aging.The 2nd, the elastic string bondage, shortcoming is insecure, easily aging.The third method is to adopt the bondage of flat bandage.
Existing technology is that plucking formula self-thread gluing is sewed on flat bandage, relies on the effect of self-thread gluing, realizes the bondage function.Major defect is: 1, plucking formula self-thread gluing access times are limited, and the time has just been grown and has been done for.2, be not easy to tie up very tightly.3, insecure, being subjected to doing the time spent than big external force can become flexible.
Summary of the invention
The utility model provides a kind of bandage of locking at the deficiency of prior art and the actual needs of fire fighting truck solid and reliablely, can not cause damage to bandage simultaneously, and tightens up conveniently, and locking rapidly discharges and is easy to flat bandage tightening buckle.
Key problem in technology of the present utility model is that the design principle of bandage tightening buckle should be locked bandage solid and reliablely, can not cause damage to bandage simultaneously, and tightens up conveniently, and locking discharges easily rapidly.
The fastening structure that the eccentric cylinder that the design adopts cooperates with the inclined-plane can be good at reaching this requirement.
Below introduce structure of the present utility model in detail, tightening buckle is the core component of this installation way, is made up of retaining button, locking card, axle, four parts of torsion spring.
The retaining button is one and buckles formation with the big slightly flat rigid narrow orifice of bandage cross section, and the inner surface of a side is the inclined-plane, and coarse groove is arranged above, and opposite side is circular axis;
Locking card is a cylindrical part, and its cylinder has ratchet shape fin, and a through hole is axially arranged, and a side has handle.
The axis of above-mentioned retaining button embeds in the through hole of locking card, retaining button, locking card are coupled to one, the inner surface inclined-plane of the ratchet shape fin of locking card cylinder and retaining button one side coincide, the torsion spring of locking card ratchet shape fin being pushed to the inner surface inclined-plane of retaining button one side is arranged on the axis of retaining button, constitute the bandage retaining mechanism.
One end of retaining button can be provided with the latch closure that is connected and fixed bandage.
The realization of whole installation way also needs the hook of bandage and bandage one end.
Work of the present utility model is owing to the effect of torsion spring, and locking card rotates around eccentric shaft, and the face of cylinder contacts with the inclined-plane of retaining button.Pinch the pressure handle handle, this contact-making surface is opened, and forms the gap; Flat bandage is passed this gap, decontrol handle, bandage will be clamped.At this moment, bandage can only the coverlet direction spur, and reciprocal pulling is limited, and draws tighter and tighter, unless pinch the pressure handle handle once more.
The effect of hook is that the other end of bandage and the latch closure of tightening buckle are connected, and does not so just need all to wear bandage at every turn, has improved the convenience of using, thereby has made it have actual use value.
Bandage is the mixing fabric, the intensity height, and good toughness can not wear and tear by the bondage object, can be used for all kinds of annexes of bondage, equipment.
The center fixed of bandage onboard, an end is fixed on the hook, the other end is clamped on the tightening buckle.Bandage hangs over hook on the tightening buckle behind annex, the free end of pulling bandage, and annex will be tightened; Pinch the handle of pressing tightening buckle, be pulled outwardly, just can unmuzzle easily.
Advantage of the present utility model can well address the above problem.This technology can adapt to the clamping needs of the annex of plurality of specifications, various materials, reduces the difficulty of design and construction of annex clamping, improves clamping reliability and access convenience, prevents that clamping spare from damaging annex, reduces and produce and maintenance cost.Tightening buckle cooperates flat bandage to use can promote the use of other similar field.
The specific embodiment
Embodiment of the present utility model is referring to accompanying drawing.
A kind of flat bandage tightening buckle is characterized in that being made up of retaining button 1, locking card 2, axle 3, torsion spring 4:
Retaining button 1 is one and buckles formation with the big slightly flat rigid narrow orifice of bandage cross section, and the inner surface of a side is the inclined-plane, and coarse groove is arranged above, and opposite side is circular axle 3;
Locking card 2 is cylindrical parts, and its cylinder has ratchet shape fin, and a through hole is axially arranged, and a side has handle;
The axle of retaining button embeds in the through hole of locking card, retaining button, locking card are coupled to one, the inner surface inclined-plane of the ratchet shape fin of locking card cylinder and retaining button one side coincide, on the axle of retaining button the torsion spring 4 of locking card ratchet shape fin being pushed to the inner surface inclined-plane of retaining button one side is arranged, form the bandage retaining mechanism.
One end of retaining button 1 can be provided with the latch closure that is connected and fixed bandage 6.
One end of bandage 6 is connected with the hook 5 with the latch closure coupling.