CN203641221U

CN203641221U - Safety locking pin

Info

Publication number: CN203641221U
Application number: CN201420025004.0U
Authority: CN
Inventors: 郁永清
Original assignee: TAICANG BAIFUQIN CARS EXPECTED Co Ltd
Current assignee: TAICANG BAIFUQIN CARS EXPECTED Co Ltd
Priority date: 2014-01-16
Filing date: 2014-01-16
Publication date: 2014-06-11
Anticipated expiration: 2024-01-16

Abstract

The utility model discloses a safety locking pin comprising a pin shaft and a snap ring. A mounting hole is formed at the connecting end of the pin shaft, and a matched inserting part is arranged at the connecting end of the snap ring and hinged to the pin shaft; a clamping groove is formed at the movable end of the pin shaft, and a lock catch matched with the clamping groove is arranged at the movable end of the snap ring. The safety locking pin is integrally formed, so that tiny parts are prevented from being eaten by children mistakenly or lost; the length of the pin shaft is slightly larger than the width of the snap ring, so that the sharp pin shaft is prevented from puncturing or scratching a user; the clamping groove of the pin shaft is clamped in the lock catch, and a self-locking function is realized; the safety locking pin is convenient to mount and dismount, and less prone to falling off in use.

Description

A kind of safety locking pin

Technical field

The utility model relates to a kind of mechanical connecting element, relates in particular to the safety locking pin that can repeatedly dismantle.

Background technique

In some toys, the application of lock pin is very extensive, and the appearance of various lock pins, for the connection between each several part provides convenience.For the toy that often needs dismounting or replacing connected element, the lock pin that connects use not only needs to play good mechanical connection effect, and will ensure that lock pin installation is convenient and not fragile in installation process.

On existing market, common lock pin is mainly to fix by the screw of bearing pin and bearing pin end, while removing, screw need to be rotated at every turn, the screw that rotates is easily lost or is swallowed and in mouth, cause accident by children, outstanding screw fixed end simultaneously, easily scratch user, for avoiding these to occur unexpectedly, at children toys and the easily instrument of contact of other children, use little component as should be reduced on seat, perambulator as far as possible.

Summary of the invention

The utility model provides a kind of safety locking pin in order to solve deficiency of the prior art, and integral type design, does not have independent tiny component, installs and dismantles simply, elegant in appearance, uses safely, has anti-drop function.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of safety locking pin, comprises bearing pin and snap ring, and bearing pin connecting end is provided with mounting hole, snap ring connecting end be provided with supporting cutting graftage part and bearing pin hinged; Bearing pin movable end has draw-in groove, and snap ring movable end has the snap close supporting with draw-in groove.

As a kind of preferred version of safety locking pin described in the utility model, described snap ring is bent to form by the steel wire of doubling, snap close is made up of the retaining ring of U-shaped bayonet socket and bayonet socket upper end, the U-shaped bayonet socket of snap close is formed on steel wire doubling top, two steel wires of U-shaped bayonet socket end are to bending in the other direction, form the retaining ring being communicated with U-shaped bayonet socket, two, retaining ring top steel wire is bent to form snap ring main body side by side, at snap ring connecting end two steel wires form semi-enclosed rectangle cutting graftage part, the draw-in groove of bearing pin movable end is inserted at the two ends of cutting graftage part, hinged fixing with bearing pin, ring clasp is curved.

As a kind of preferred version of safety locking pin described in the utility model, described retaining ring is rectangle, and the deformation slight by rectangle retaining ring just can snap in and pull out bayonet socket by the draw-in groove of bearing pin.

As a kind of preferred version of safety locking pin described in the utility model, described retaining ring is del, and bearing pin slips into U-shaped bayonet socket more easily along the retaining ring of del.

As a kind of preferred version of safety locking pin described in the utility model, on described snap ring, have fixed plate, fixed plate from two sides by two fixations with steel wire.

As a kind of preferred version of safety locking pin described in the utility model, on described snap ring, there is fixed plate, fixed plate is arranged on snap close end and the cutting graftage part of snap ring, fixed plate bends inwards from three directions, steel wire is clamped, prevent distortion, prevent that fixed plate is shifted along steel wire simultaneously.

Beneficial effect:

Safety locking pin described in the utility model, integral type forms, and avoids tiny component eaten by mistake by children or lose; Bearing pin is slightly longer than and snap ring width, avoids sharp-pointed bearing pin to stab or scratch user; The draw-in groove of bearing pin snaps in snap close, has auto-lock function; Install and convenient disassembly, in use, can not come off.

Brief description of the drawings

Fig. 1 is the safety locking pin structural representation described in embodiment 1.

Fig. 2 is the safety locking pin structural representation described in embodiment 2.

Wherein: 1, bearing pin 2, snap ring 3, fixed plate 11, mounting hole 12, draw-in groove 21, cutting graftage part 22, U-shaped bayonet socket 23, retaining ring

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Embodiment 1

As shown in Figure 1, a kind of safety locking pin, comprises the fixed plate 3 on bearing pin 1, snap ring 2 and snap ring 2, and bearing pin connecting end is provided with mounting hole 11, and mounting hole 11 can be that through hole can be also blind hole.Snap ring 2 connecting ends are provided with supporting cutting graftage part 21, and bearing pin 1 movable end has draw-in groove 12, and snap ring 2 movable ends have the snap close supporting with draw-in groove 12, and described snap close is made up of the retaining ring 23 of U-shaped bayonet socket 22 and bayonet socket upper end, and retaining ring is rectangular.Particularly, snap ring 2 can be processed by the following method, by a steel wire doubling, make its doubling end form U-shaped bayonet socket 22, U-shaped bayonet socket end upwards bends after the bending of two ends simultaneously, finally bend inwards simultaneously and form rectangle retaining ring 23, two steel wires of end at retaining ring merge, steel wire after merging is carried out to arc bending, make snap ring semicircular in shape, at steel wire opening end corresponding position, bend a rectangle cutting graftage part 21, cutting graftage part 21 is inserted to the mounting hole 11 of bearing pin, fixing with fixed plate 3 at cutting graftage part 21 ends, also be fixed with fixed plate 2 at retaining ring 23 ends, in use, the movable end of bearing pin 1 is inserted and treated in fixing parts, then snap ring 2 is rotated, bearing pin 1 is snapped in to the U-shaped bayonet socket 22 of snap ring end, just can normally use.

In addition, according to as installed needs, in the present embodiment, the global shape of snap ring can be various shapes, and operated by rotary motion camber is convenient to the processing and fabricating of steel wire, can select as required the steel wire of different elasticity capacities to make simultaneously.

Embodiment 1

As shown in Figure 2, a kind of safety locking pin, comprises the fixed plate 3 on bearing pin 1, snap ring 2 and snap ring 2, and bearing pin connecting end is provided with mounting hole 11, and mounting hole 11 can be that through hole can be also blind hole.Snap ring 2 connecting ends are provided with supporting cutting graftage part 21, and bearing pin 1 movable end has draw-in groove 12, and snap ring 2 movable ends have the snap close supporting with draw-in groove 12, and described snap close is made up of the retaining ring 23 of U-shaped bayonet socket 22 and bayonet socket upper end, and retaining ring is del.Particularly, snap ring 2 can be processed by the following method, by a steel wire doubling, make its doubling end form U-shaped bayonet socket 22, simultaneously inside horizontal buckling after the outside several angle bending of U-shaped bayonet socket end, form del retaining ring 23, two steel wires of end at retaining ring 23 merge, steel wire after merging is carried out to arc bending, make snap ring semicircular in shape, at steel wire opening end corresponding position, bend a rectangle cutting graftage part 21, cutting graftage part 21 is inserted to the mounting hole 11 of bearing pin, fixing with fixed plate 3 at cutting graftage part 21 ends, also be fixed with fixed plate 3 at retaining ring end, in use, the movable end of bearing pin 1 is inserted and treated in fixing parts, then snap ring 2 is rotated, bearing pin 1 is snapped in to the U-shaped bayonet socket 22 of snap ring end, just can normally use.

Although mode of execution of the present utility model is illustrated in specification, these mode of executions just, as prompting, should not limit protection domain of the present utility model.In the scope that does not depart from the utility model aim, carrying out various omissions, displacement and change all should be included in protection domain of the present utility model.

Claims

1. a safety locking pin, is characterized in that: comprise bearing pin and snap ring, bearing pin connecting end is provided with mounting hole, snap ring connecting end be provided with supporting cutting graftage part and bearing pin hinged; Bearing pin movable end has draw-in groove, and snap ring movable end has the snap close supporting with draw-in groove.

2. safety locking pin according to claim 1, is characterized in that: described snap ring is bent to form by the steel wire of doubling, and snap close is made up of the retaining ring of U-shaped bayonet socket and bayonet socket upper end.

3. safety locking pin according to claim 2, is characterized in that: described retaining ring is rectangle or inverted triangle shape.

4. safety locking pin according to claim 2, is characterized in that: on described snap ring, have fixed plate, fixed plate from two sides by two fixations with steel wire.

5. safety locking pin according to claim 2, is characterized in that: on described snap ring, have fixed plate, fixed plate is arranged on snap close end and the cutting graftage part of snap ring, from both sides and the fixing steel wire in lower end.