CN101761273B - Automatic unlocking device for drawers in cash drawer - Google Patents

Abstract

The invention discloses a stable and reliable automatic unlocking device for a drawer in a cash register box, which comprises a box body and a bottom plate arranged on the box body; an electromagnet is arranged on the bottom plate, an iron core is movably arranged in the electromagnet, a retainer ring is arranged on the iron core, a reset spring is nested in the iron core at the inner side of the retainer ring, a strip-shaped draw bar hole is arranged in the iron core at the outer side of the retainer ring, the bottom plate is also provided with a rotating pin, a swing plate is movably arranged on the rotating pin, a striking head for unlocking is arranged at the outer side of the swing plate, both ends of the swing plate are respectively provided with a protruding outward draw bar and an upright downward limit bar, the draw bar protrudes into a draw bar hole, the bottom plate is also provided with a circular arc-shaped limit hole, and the limit bar protrudes into the limit hole. The automatic unlocking device is mainly used for the cash register box in which the drawer can be automatically opened.

Description

Automatic unlocking device for drawers in cash drawer

technical field

The invention relates to an automatic unlocking device for a drawer in a cash register.

Background technique

As everyone knows, cash registers are widely used to collect coins or bills in shopping malls, supermarkets, hotels, retail stores and other occasions. Present cash registers are usually provided with an automatic unlocking device that is respectively positioned on the drawer box body of the drawer and the automatic decoupling of the limit pin. An iron core is movably arranged in the electromagnet, and the end of the iron core is an impact head for knocking off the hook. In actual use, the stability of this automatic unlocking device is relatively poor, which often leads to the inability to open the drawer.

Contents of the invention

The technical problem to be solved by the present invention is to provide a stable and reliable automatic unlocking device for the drawer in the cash register.

In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: the automatic unlocking device for the drawer in the cash register box, including: a box body and a bottom plate arranged on the box body, an electromagnet is arranged on the bottom plate, and iron bars are movable in the electromagnet. core, the iron core is provided with a retaining ring, and the iron core is set with a return spring on the inner side of the retaining ring, and the iron core is provided with a long rod hole on the outer side of the retaining ring, and a rotating pin is also arranged on the bottom plate. A swing piece is movable on the pin, an impact head for unlocking is arranged on the outside of the swing piece, and a pulling rod protruding outwards and a vertically downward limit rod are respectively arranged at both ends of the swinging piece, and the pulling rod extends into the In the pull rod hole, the bottom plate is also provided with a circular arc-shaped limit hole, and the limit rod extends into the limit hole.

The swing piece, the pulling rod, the impact head and the limit rod are of an integrated structure.

The beneficial effects of the present invention are: the present invention adds a retaining ring to the iron core, and sets a return spring between the iron core and the electromagnet. The end of the iron core hits the hook through the swing mechanism, and the movement of the swing mechanism Restricted by the limit hole, its running track is very smooth. This makes the whole automatic unlocking device stable and reliable.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is a schematic top view of the structure of FIG. 1 .

Fig. 3 is a schematic diagram of the structure of the swing piece.

FIG. 4 is a schematic view of the right view of FIG. 3 .

Fig. 5 is a structural schematic diagram of the iron core.

Among Fig. 1 to Fig. 5: 1, bottom plate, 2, electromagnet, 3, iron core, 31, retaining ring, 32, U-shaped groove, 33, pin hole, 4, return spring, 5, rotating pin, 6, swing Sheet, 61, pull bar, 62, impact head, 63, limit rod, 64, rotating hole, 7, bearing pin, 8, limit pin, 9, cotter pin, 11, limit hole.

Detailed ways

Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Fig. 1 and Fig. 2, the automatic unlocking device of the drawer in the cash register box according to the present invention comprises: a box body and a bottom plate 1 arranged on the box body, the bottom plate 1 is provided with an electromagnet 2, and the electromagnet 2 The activity is provided with iron core 3, and iron core 3 is provided with retaining ring 31, and iron core 3 is set with back-moving spring 4 in the inner side of retaining ring 31, and iron core 3 is provided with elongated pull rod hole in the outer side of retaining ring 31, as As shown in Figure 5, the tie rod hole is formed by a U-shaped groove 32 opened on the outer end surface of the iron core 3 and a pin shaft 7 pierced in the pin holes 33 on both side walls of the U-shaped groove; Also be provided with rotating pin 5, as shown in Figure 3 and Figure 4, the outside of swing piece 6 is provided with the impact head 62 that is used for unlocking, and the two ends of swing piece 6 are respectively provided with outwardly protruding pulling rod 61 and vertical direction. The lower limit rod 63, the swing piece 6, the pull rod 61, the impact head 62 and the limit rod 63 are of an integrated structure. Positioning hole 11 - as shown in FIG. 2 , the limiting rod 63 extends into the limiting hole 11 , and the rotating pin 5 is movably arranged in the rotating hole 64 on the swing piece 6 . A limit pin 8 is also arranged on the bottom plate 1 , and one end of the limit pin 8 is provided with a pin cap, and the other end is provided with a cotter pin 9 .

The working principle of the present invention is: when the electromagnet 2 is not working, the iron core 3 will be under the action of the reset compression spring 4, the bottom of the U-shaped groove 32 will squeeze the pull rod 61, and the swing piece 6 will rotate clockwise around the rotating pin 5. Rotate until the limit rod 63 is blocked in the limit hole 11 to maintain static balance; when the drawer is opened, the electromagnet 2 is energized for about 50 milliseconds, and the coil in the electromagnet 2 produces an instant magnetic force, which overcomes the suction force produced by the iron core 3 Reset the elastic force of the compression spring 4, so that the pull rod 61 retracts along with the iron core 3, so that the swing piece 6 rotates counterclockwise around the rotation pin 5. During the rotation of the swing piece 6, the impact head 62 will hit and be stuck in the limit position. The hook on the pin 8 makes the hook rotate outwards and slips off from the limit pin 8 to realize automatic unlocking; then, the drawer is opened under the action of the pop-up mechanism. After the electromagnet 2 is energized, the swing piece 6 will return to the initial position under the action of the reset stage spring 8 .

Claims (2)

1. The automatic unlocking device for the drawer in the cash register box, comprising: a box body and a bottom plate arranged on the box body, an electromagnet is arranged on the bottom plate, and an iron core is movable in the electromagnet, and it is characterized in that: the iron core is A retaining ring is provided, and the iron core is set with a return spring on the inner side of the retaining ring, and the iron core is provided with a strip-shaped pull rod hole on the outer side of the retaining ring, and a rotating pin is also arranged on the bottom plate, and a movable pin is arranged on the rotating pin. The swinging piece is provided with an impact head for unlocking on the outside of the swinging piece, and the two ends of the swinging piece are respectively provided with an outwardly protruding pull rod and a vertically downward limit rod, and the pull rod extends into the pull rod hole. The base plate is also provided with an arc-shaped limiting hole, and the limiting rod extends into the limiting hole. 2. The automatic unlocking device according to claim 1, characterized in that: the swing piece, the pulling rod, the striking head and the limit rod are of an integrated structure.

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