CN1185973C - Three point pullover buckle - Google Patents

Abstract

The present invention discloses a three-point pullover buckle and relates to the technical field of a safety belt buckle. The three-point pullover buckle comprises a locking buckle, a locking card and a button, wherein the locking buckle is provided with a locking hole and a threading hole of a safety belt; the locking card is buckled with the locking buckle and is provided with a threading hole of a safety belt; the button can control the switching-on of the locking card; two pins of the button penetrate through the locking buckle wall which corresponds to a button cover, and are embedded into chutes on both side walls of the locking hole; a pressure spring is arranged between the button cover and the locking buckle wall. The present invention is characterized in that the inner side of the end of the pins of the button are provided with a buckling foot which can be buckled with a card foot of the locking card; the outer side is provided with an inverse buckle which can prevent the button from being ejected by the pressure spring; the inverse buckle is embedded into a strip-shaped hole on the side wall of the locking buckle outside the chutes, and can partially move frontward and backward along the strip-shaped hole. Compared with the prior art, the present invention has the advantages of few used parts and components, low cost, simple assembly technology and high productive efficiency, and is especially suitable for buckling a three-point pullover safety belt.

Description

Three point pullover buckle

Technical field

The present invention relates to a kind of safety belt buckle, especially a kind of buckle that is applicable to three point pullover formula safety belt.

Background technology

Conventional security band buckle is to rely on the elasticity of plastics distortion of pintle hook lock card base to snap in, in order to guarantee its elasticity, certainly exist a weak part snapping in the position, thereby cause card base in use to rupture easily or skid off, in addition, the inevitable aging phenomenon that plastics itself exist will reduce the elasticity of working of plastics, also cause it in use to rupture easily, influence life of product and security.For this reason, person skilled is improved safety belt buckle, wishes to overcome the existing defective of conventional security band buckle.It as the patent No. 99257288.6 Chinese patent " safety belt buckle ", its described safety belt buckle is made up of snap close and pintle hook lock, on snap close, be provided with a controlled lockmaking Ka Kaiqidekongzhigai, fix a pin on two pins of lid, pin can be done local upper and lower moving by the action of lid, a spring is equipped with in the lockhole bottom, can make pintle hook lock eject snap close under the spring force effect; Pintle hook lock is put together by left and right pintle hook lock, the pair of meshing card base that forms after the amalgamation can with the pin snapping.The described safety belt buckle of this patent has overcome the above-mentioned shortcoming of conventional security band buckle, but, it need to insert these parts independently of pin in assembling process, and the mount pin period of the day from 11 p.m. to 1 a.m needs in the elastic force that overcomes a powerful volute spring pin to be inserted in two pins accurately, assembly technology is complicated bothersome, and efficient is low.

Summary of the invention

The object of the present invention is to provide a kind of shortcoming that overcomes traditional product, assemble simple and safe and reliable safety belt buckle.

Technical scheme of the present invention is achieved in that this kind three point pullover buckle, comprise that tool lockhole and safety belt connect the snap close in hole, with being arranged on the snap close snapping, safety belt connects the pintle hook lock in hole, the button that controlled lockmaking card is opened, two pins of button pass in the chute on the two side that the locking walls corresponding with button cover be inlaid in lockhole, be provided with a stage clip between button cover and the locking walls, it is characterized in that inboard, described button pin end is provided with one and can buckles pin with the card base of pintle hook lock fastens, the outside is provided with one and can prevents the back-off that button is ejected by stage clip, and back-off is inlaid in the bar hole on the snap close sidewall in the chute outside and before can doing along bar hole, the back is local moves.

Described button pin and the cross section lockhole parallel sidewalls are the flag shape of band flagpole, and button foot portion is processed into and is convenient to card base and slips into inclined-plane in the lockhole.

Described pintle hook lock is put together by left and right pintle hook lock, left side pintle hook lock has a clamp, clamp is provided with at least one convex tendon, right pintle hook lock is provided with and the convex tendon corresponding grooves, the lower end of clamp has can limit the step that the left relatively pintle hook lock of right pintle hook lock moves down, end, right pintle hook lock lower end be provided with a pair of can with buckle the card base that climbers close, the end, lower end of clamp and card base end all are processed into and are convenient to card base and slip into the interior inclined-plane of lockhole.

Be provided with on the pin of described button and in the chute on the two side of lockhole and prevent to install the structure of makeing mistakes.This prevent to install the structure of makeing mistakes be chute two on the base angle be the right angle, twice base angles are chamfering, pin is provided with right angle corresponding with chute and chamfering.

Compared with prior art, advantage of the present invention is: 1, used parts are few, and cost is low; 2, assembly technology is simple, the efficient height.

Figure of description

Fig. 1 is the general assembly three-dimensional exploded view of the embodiment of the invention;

Fig. 2 is the front view of embodiment of the invention buckling state;

Fig. 3 is that the B-B of Fig. 2 is to cutaway view;

Fig. 4 presses the schematic diagram in following time for button among Fig. 3;

Fig. 5 for for the C-C of Fig. 3 to cutaway view;

Fig. 6 is the front view of snap close;

Fig. 7 is that the A-A of Fig. 6 is to cutaway view;

Fig. 8 is the front view of pintle hook lock;

Fig. 9 is the upward view of Fig. 8;

Figure 10 is the stereogram of button;

Figure 11 is the stereogram of left pintle hook lock;

Figure 12 is the stereogram of right pintle hook lock.

Specific embodiment

Below in conjunction with embodiment the present invention is described in further detail.

As Fig. 1～shown in Figure 12, be a preferred embodiment of the present invention.As shown in Figure 1, the present embodiment three point pullover buckle comprises that tool lockhole 3.5 and safety belt connect the snap close 3 in flat hole 3.6, connects the pintle hook lock in flat hole 5.1,6.1 and the button 1 that a controlled lockmaking card is opened with safety belt is arranged on snap close 3 snappings.There is an oval dimple 3.2 on snap close 3 surfaces, form the chute 3.4 of two symmetries on lockhole 3.5 two sides, and chute 3.4 all communicates with dimple 3.2, have the bar hole 3.7 (referring to Fig. 5) of two correspondences on the locking walls in two chute 3.4 outsides.Button 1 has a button cover 1.2, and the size of button cover 1.2 and dimple 3.2 coincide, and two pins 1.3 of button 1 pass in the chute 3.4 on the two side that the locking walls corresponding with button cover 1.2 be inlaid in lockhole 3.5 (referring to Fig. 1, Fig. 5).Chute 3.4 two on the base angle be the right angle, twice base angles are chamfering 3.8, pin 1.3 is provided with the chamfering 1.5 (referring to Fig. 1, Figure 10) corresponding with chute 3.4.The length of chute 3.4 is greater than pin 1.3 length, and the thickness of button cover 1.2 is convenient to button 1 like this and is made local forward and backward move (referring to Fig. 5) less than the degree of depth of dimple 3.2 in addition.Be provided with a taper stage clip 2 between button cover 1.2 and the locking walls, inboard, button pin 1.3 end be provided with one can fasten with the card base 5.1 of pintle hook lock 5 buckle pin 1.4, the outside is provided with one and can prevents the back-off 1.1 that button 1 is ejected by stage clip 2, back-off 1.1 is inlaid in the bar hole 3.7 on the snap close sidewall in chute 3.4 outsides and can does forward and backward part along bar hole 3.7 and move, and the spacing button 1 that just makes of 3.7 pairs of buttons 1 of bar hole is made time spent button cover 1.2 concordant with the locking walls outer surface (referring to Fig. 1, Fig. 3, Figure 10) in no external force.Pintle hook lock is put together by left pintle hook lock 6 and right pintle hook lock 5, left side pintle hook lock 6 has a clamp 6.2, clamp 6.2 is provided with a convex tendon 6.3 and two projections 6.4, right pintle hook lock 5 is provided with and convex tendon 6.3 and projection 6.4 corresponding grooves 5.3, and the lower end of clamp 6.2 has can limit the step 6.5 (referring to Fig. 1, Fig. 8, Fig. 9, Figure 11) that the left relatively pintle hook lock 6 of right pintle hook lock 5 moves down.End, right pintle hook lock 5 lower end be provided with a pair of can with the card base 5.2 (referring to Fig. 9, Figure 12) of buckle pin 1.4 fastenings.The end, lower end of clamp 6.2 and card base 5.2 ends all are processed into and are convenient to card base 5.2 and slip into inclined-plane (referring to Fig. 9, Figure 11, Figure 12) in the lockhole 3.5.The bottom of lockhole 3.5 is provided with one can be for the cylinder 3.9 of little spring 4 installations, cylinder 3.9 lower ends are provided with the groove 3.10 that can block little spring 4 lower ends, after pintle hook lock inserts lockhole 3.5, the little spring 4 (referring to Fig. 3, Fig. 4, Fig. 7) on the just corresponding cylinder 3.9 of breach 6.6 in the middle of the end, clamp 6.2 lower end.

During assembling, earlier on the cylinder 3.9 of lockhole 3.5 bottoms, load onto little spring 4, again taper stage clip 2 is placed between button cover 1.2 and the locking walls and two pins 1.3 of button 1 are inserted the assembling of promptly having finished in the chutes 3.4 snap close 3.When button 1 is installed, when back-off 1.1 slides into bar hole 3.7 positions, under the effect of the elastic force that pin 1.3 elastic deformations are produced, back-off 1.1 snaps in bar hole 3.7, thereby makes whole button 1 can only do local forward and backward moving and can not ejected by taper stage clip 2.

During use, at first safety belt is through connecting in the flat hole separately respectively, then with left and right pintle hook lock amalgamation, and pintle hook lock inserted in lockhole, this moment card base 5.2 pressure of generation of inclined surface of inclined-plane mutual-buckled feet 1.4, this pressure promotes button 1 and moves inward, and compression taper stage clip 2, but when two inclined-planes slid into two inclined-planes relatively and just stagger, button 1 i.e. resilience under the elastic force effect of stage clip 2, thereby made button pin 1.4 and card base 5.2 fasten and pintle hook lock is pinned.If will open pintle hook lock, then only need press knob down 1, pintle hook lock promptly ejects under the effect of lockhole 3.5 bottom little springs 4 automatically.

Claims (7)

1, a kind of three point pullover buckle, comprise that tool lockhole and safety belt connect the snap close in hole, with being arranged on the snap close snapping, safety belt connects the pintle hook lock in hole, the button that controlled lockmaking card is opened, two pins of button pass in the chute on the two side that the locking walls corresponding with button cover be inlaid in lockhole, be provided with a stage clip between button cover and the locking walls, it is characterized in that inboard, described button pin end is provided with one and can buckles pin with the card base of pintle hook lock fastens, the outside is provided with one and can prevents the back-off that button is ejected by stage clip, and back-off is inlaid in the bar hole on the snap close sidewall in the chute outside and before can doing along bar hole, the back is local moves.

2, three point pullover buckle as claimed in claim 1 is characterized in that described button pin and the cross section lockhole parallel sidewalls the flag shape for the band flagpole, and button foot portion is processed into and is convenient to card base and slips into inclined-plane in the lockhole.

3, three point pullover buckle as claimed in claim 1 is characterized in that described pintle hook lock is put together by left and right pintle hook lock, and left pintle hook lock has a clamp, and clamp is provided with at least one convex tendon, and right pintle hook lock is provided with and the convex tendon corresponding grooves.

4, three point pullover buckle as claimed in claim 3, the lower end that it is characterized in that described clamp has can limit the step that the left relatively pintle hook lock of right pintle hook lock moves down.

5, three point pullover buckle as claimed in claim 3, it is characterized in that end, described right pintle hook lock lower end be provided with a pair of can with buckle the card base that climbers close.

6,, it is characterized in that the end, lower end of described clamp and card base end all are processed into and be convenient to card base and slip into inclined-plane in the lockhole as claim 3 or 4 or 5 described three point pullover buckles.

7, three point pullover buckle as claimed in claim 1, it is characterized in that being provided with on the pin of described button and in the chute on the two side of lockhole and prevent to install the structure of makeing mistakes, this prevents to install the structure of makeing mistakes: chute two on the base angle be the right angle, twice base angles are chamfering, and pin is provided with right angle corresponding with chute and chamfering.

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