CN2249519Y

CN2249519Y - Buckle of safety belt

Info

Publication number: CN2249519Y
Application number: CN 95229310
Authority: CN
Inventors: 孙德水; 尤春甫; 徐庆忠
Original assignee: ZHENXING LABOR PROTECTING PRODUCTS FACTORY BEIJING
Current assignee: ZHENXING LABOR PROTECTING PRODUCTS FACTORY BEIJING
Priority date: 1995-12-28
Filing date: 1995-12-28
Publication date: 1997-03-19
Anticipated expiration: 2005-12-28

Abstract

The utility model relates to a safety hook of a safety belt, which belongs to labor protection articles. The utility model is composed of a hook body 1, a main and a subsidiary safety pieces 3, 7, positioning pins 6, 9, and restoring springs 5, 8. The utility model is characterized in that the main and the subsidiary safety pieces 3, 7 are hinged together by a central pin 11; the waist of the main safety piece 3 is provided with a slideway 11; the upper part of the main safety piece is provided with a convex corner 12 and a trapezoidal corner 2. The utility model has the advantages of reliable safety performance, one-hand operation in use, light weight, and convenience.

Description

The belt fittings safety door hook

The utility model belongs to the articles for labour protection field, relates to a kind of belt fittings safety door hook.

One of the indispensable accessory of existing safety belt safety door hook, its major and minor safety plate is respectively only by a pin and coupler body hinge location, be fixed on the central pin of main safety plate waist, only play the effect of insurance clamp, its slideway is positioned on the coupler body, influence coupler body intensity, and after the locking of the central pin of the dop of secondary safety plate and main safety plate, the insurance function that forms a little less than, simultaneously, because main safety plate top edge has only the right outside to combine with the monoplane type contact that the chimoto inboard is small size, the two axially misplaces along pin easily, unfavorable safety.

The purpose of this utility model is, a kind of new type of safe band accessory safety door hook is provided, and has bigger safety performance, and operation simultaneously is very convenient again, and after the safety door hook locking, insurance function is strong, and hook end and main safety plate do not misplace.

Concrete scheme is:

Comprise coupler body 1, main safety plate 3, secondary safety plate 7, shop bolt 6 and 9, return

spring

5 and 8; It is characterized in that, also comprise main safety plate 3 and secondary safety plate 7 hinges central pin 11 together, the slideway 4 that main safety plate 3 hurdle waists have central pin 11; There is the angle 12 of protrusion at position, main safety plate 3 upper left corner, and position, the upper right corner has and the corresponding notch cuttype of the inboard shape size of the hook end of coupler body 1 angle 2, thereby reliably guarantees safety door hook in locking and dispose procedure, and main safety plate 3 and secondary safety plate 7 all do not produce dislocation.

Usefulness of the present utility model is: main safety plate 3, secondary safety plate 7 respectively have two hinge points, one of them is total hinge point, simultaneously because the protrusion angle 12 of main safety plate 3 and the effect at notch cuttype angle 2, can guarantee reliably that safety door hook is in locking and dispose procedure, especially under lock-out state, main safety plate 3, secondary safety plate 7 all do not misplace, thereby have more reliable security insurance performance, and in using, one-handed performance, light and handy convenient.

Fig. 1, belt fittings safety door hook lock-out state front view;

Fig. 2, the left view of Fig. 1;

Fig. 3, the right view of Fig. 1;

Fig. 4, the complete release conditions figure of belt fittings safety door hook;

Embodiment: in conjunction with the accompanying drawings, further be illustrated.

The hook termination of coupler body 1 is curved, and the chimoto inboard is chamfer shape; Main safety plate 3 is by pin 6 and coupler body 1 hinge, main safety plate 3 hurdle waist slideways 4 are " " shape, it is the arc of band straight flange, straight flange is that locking institute is indispensable, the notch cuttype angle 2 at position, the upper right corner is corresponding with the inboard chamfer of chimoto, protrusion angle 12 shapes and the size at position, the upper left corner can be lived coupler body 1 from coupler body 1 upper and lower two side plane mounting boards, can be enough to prevent main safety plate 3 dislocation in locking back; Secondary safety plate 7 is by pin 9 and coupler body 1 hinge; Central pin 11 is in the same place main safety plate 3 and secondary safety plate 7 hinges, and there is packing ring 10 at two ends, help slideway 4 and slide.

Using method and operating principle: no external force is in normal lock state as the time spent, as shown in Figure 1, during release, execute A power earlier in secondary safety plate 7 afterbodys, then it is an axle with pin 9, compression retracteding position spring 8, and be rotated counterclockwise, drive central pin 11 simultaneously along sliding on slideway 4 straight flanges, reach the summit after, execute the waist top of B power again in main safety plate 3, then it is an axle with pin 6, compression retracteding position spring 5, and be rotated counterclockwise, cambered way 4 slips over central pin 11 gradually and reaches the summit, at this moment, the ladder type angle, position, the upper right corner 2 of the chimoto of coupler body 1 and main safety plate 3 breaks away to greatest extent, promptly is in complete release conditions, as shown in Figure 4; At this moment, cancel B power earlier, main safety plate 3 automatically replies lock-out state under return spring 5 effects, cancel A power again, and secondary safety plate 7 automatically replies lock-out state under return spring 8 effects; A power and B power are cancelled simultaneously, also can automatically reply lock-out state; Do not cancel A power, then latch-up-free effect if cancel B power earlier; If only cancel A power, do not cancel B power, then be in release conditions always.

Claims

1. belt fittings safety door hook, comprise coupler body (1), main safety plate (3), secondary safety plate (7), alignment pin fixed (6 and 9), return spring (5 and 8), it is characterized in that: comprise that also main safety plate (3) hurdle waist has the slideway (4) of central pin (11) main safety plate (3) and secondary safety plate (7) while hinge central pin (11) together.

2. belt fittings safety door hook according to claim 1, it is characterized in that: main safety plate (3) position, the upper right corner has and the corresponding notch cuttype angle (2) of the inboard shape size of the hook end of coupler body (1), and there is the protrusion angle (12) from both sides, upper and lower plane mounting board coupler bodies (1) at its position, upper left corner.

3. belt fittings safety door hook according to claim 1 and 2 is characterized in that: the hook end of coupler body (1) is curved.