CN115240338A - A mechanism for preventing secondary opening and its gate - Google Patents

Abstract

The invention discloses a mechanism for preventing secondary opening, which is used for preventing the secondary opening of a gate. , a limit post, installed on the flat plate portion, and limited and accommodated in the arc groove, the flat plate portion first extends upwards and then horizontally bends to form a stopper piece, the stopper piece has a hypotenuse and The straight edge connected with the beveled edge forms a first through hole through the flat plate portion, and a stud passes through the first through hole to lock the locking hook on the base, so that the locking hook surrounds The stud rotates on the trajectory defined by the arc groove; an inner slider is accommodated in the base and pushes the lock hook to rotate; a lock hook spring, one end is fixed to the lock hook, and the other end is fixed to the lock hook. The base makes it exert elastic force on the lock hook to form a turning moment.

Description

A mechanism for preventing secondary opening and its gate

technical field

The invention relates to the field of retail cash boxes or cash bags, in particular to a mechanism for preventing secondary opening and a gate thereof.

Background technique

In the retail field, it is usually required that after the cash box and the cash bag are removed from the equipment, the gate is not allowed to be opened twice without being reset after opening the box, so as to prevent internal personnel from committing crimes. Therefore, after reset and initialization, this type of box is not only required to be allowed to be opened only once, but also needs to have a self-locking function.

Therefore, it is necessary to develop a mechanism for preventing secondary opening and its gate.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a mechanism for preventing secondary opening and a gate thereof. By setting the lock hook and the self-locking of the gate, the purpose that the gate cannot be opened twice is realized.

The present invention is achieved through the following technical solutions: a mechanism for preventing secondary opening, used for preventing secondary opening of a gate, comprising: a base, the base has an arc groove; a lock hook, accommodated in the base, the The locking hook has a flat plate portion and a limit post, which is installed on the flat plate portion and is limited and accommodated in the arc groove. The flat plate portion first extends upward and then is horizontally bent to form a blocking piece. The stop piece has a beveled edge and a straight edge connected to the beveled edge, a first through hole is formed through the flat plate portion, and a stud passes through the first through hole to lock the locking hook on the base , so that the lock hook rotates around the trajectory defined by the stud and the arc groove; an inner slider is accommodated in the base and pushes the lock hook to rotate; a lock hook spring, one end is fixed on the The other end of the lock hook is fixed on the base, so that it exerts elastic force on the lock hook to form a steering torque; during the opening process of the gate, the steering torque of the lock hook spring to the lock hook is clockwise first. The torque gradually changes to 0, and then the counterclockwise torque gradually changes from 0; in the process of closing the gate, the gate pushes the inclined surface to drive the lock hook to rotate. When the lock hook is completely reset, the straight edge stops The gate is prevented from moving, and the gate is prevented from being opened twice.

Further, the flat plate portion is bent upward to form a fixing piece, a second through hole is formed through the fixing piece, and the stud passes through the first through hole and the second through hole at the same time, so that the The lock hook is locked to rotate on the base.

Further, a retaining spring is used to clamp the stud on the surface of the fixing plate, so that the stud and the locking hook are fastened and installed.

Further, the height of the fixing piece is lower than the blocking piece.

Further, an outer sliding block is also included, the outer sliding block is located outside the base and assembled with the inner sliding block, so that the inner sliding block slides stably in the base.

Further, a spring limit shaft is installed in the base and passes through the inner slider, a slider return spring is sleeved on the spring limit shaft, and one end of the spring limit shaft is lowly connected to the inner slider, The other end is lowly connected to the side wall of the base.

Another technical solution is: a gate, the gate has the above-mentioned secondary opening prevention mechanism, comprising: a gate base, the gate base accommodates the secondary opening prevention mechanism; a gate assembly, covering On the gate base, the gate assembly has a locking feature post and an opening transmission mechanism, the locking feature post is exposed in the arc groove in the initial state before the gate is opened, and during the closing process of the gate Push the oblique side and stop at the straight side; a gate opening key, the gate opening key has a gate opening mandrel and a telescopic slider mandrel, the gate opening mandrel pushes the opening The transmission mechanism drives the gate assembly to slide, and the retractable sliding block top rod pushes the inner sliding block to slide, thereby driving the lock hook to rotate.

Further, the gate opening top rod and the telescopic sliding block top rod are fixedly installed on the same side of the base at the same time.

Compared with the prior art, the beneficial effects that the present invention can achieve are:

Due to the ingenious design of the oblique side and the straight side of the lock hook and the ingenious cooperation of the two with the locking feature column, the secondary opening prevention mechanism and the gate thereof are simple in structure and low in cost; the sliding block can be effectively used to change The lock hook spring acts on the torsion direction of the lock hook, and realizes the self-locking function of the lock hook in the reset position; effectively realizes the effect of preventing secondary opening of the gate, and has a self-locking function, which protects the cash box against falling and violent opening. .

Description of drawings

Fig. 1 shows the three-dimensional exploded view of the mechanism for preventing secondary opening of the present invention;

Fig. 2 shows the assembly diagram of the mechanism for preventing secondary opening of the present invention;

FIG. 3 is an assembly diagram of another perspective of the mechanism for preventing secondary opening according to the present invention;

Fig. 4 shows the three-dimensional exploded view of the gate of the present invention;

Fig. 5 shows the three-dimensional combined view of the gate of the present invention;

Figure 6 shows a perspective view of the gate opening key of the gate of the present invention;

Fig. 7 shows the position state relationship diagram between the locking feature of the gate and the lock hook in the initial state;

Fig. 8 is an enlarged view of part A in Fig. 7;

Figure 9 is a schematic diagram of the state when the retractable slider top rod just contacts the inner slider;

Figure 10 is a schematic diagram of the state when the gate opening ejector rod begins to contact the opening transmission mechanism;

Fig. 11 is the enlarged schematic diagram of the part of Fig. 10;

Figure 12 is a schematic diagram of a critical state where the moment of the lock hook is 0;

Figure 13 is a schematic diagram of the critical state where the retractable slider push rod pushes the inner slider to the limit position, and the lock hook jumps over 0 torque;

Figure 14 is a schematic diagram of the fully open state of the gate;

Figure 15 is a schematic diagram of the relationship between the lock hook, the gate locking feature column, the inner slider, the retractable slider top rod, etc. corresponding to the fully open state of the gate;

Fig. 16 is the enlarged schematic diagram of the part of Fig. 15;

Figure 17 is a schematic diagram of the state when the gate opening key is just pulled out and the gate starts to close;

Fig. 18 is a schematic diagram of the state between the components of the anti-secondary opening mechanism in the state of Fig. 17;

Fig. 19 is a partial enlarged schematic view of Fig. 18;

Figure 20 is a schematic diagram of the locking feature post opening the lock hook to a critical position;

Figure 21 is a schematic diagram of the state when the gate locking feature column is returned;

Figure 22 is a schematic diagram of the state when the top rod of the telescopic slider leaves the inner slider, and the inner slider is completely reset under the action of its own return spring force.

In the figure: 1. Prevent secondary opening mechanism; 11, Base; 111, Arc groove; 12, Lock hook; 121, Flat plate part; 122, Limit post; Side; 124, the first through hole; 125, the fixing piece; 1251, the second through hole; 13, the stud; 14, the inner slider; 15, the hook spring; 16, the retaining spring; 17, the outer slider; 18 , spring limit shaft; 19, slider return spring; 2, gate base; 3, gate; 31, open transmission mechanism; 32, locking feature column; 4, gate opening key; 41, gate opening ejector rod; 42, Telescopic sliding block ejector rod; 43. Base.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be combined arbitrarily to form new embodiments. .

As shown in FIG. 1 to FIG. 3 , the present invention discloses a secondary opening prevention mechanism 1 , comprising a base 11 , a lock hook 12 accommodated in the base 11 , and installed on the base through the lock hook 12 11, a stud 13 enables the lock hook 12 to rotate around the stud 13; an inner slider 14 is accommodated in the base 11 and pushes the lock hook 12 to rotate; an outer slider 17 is located at Outside the base 11, it is assembled to the inner slider 14; a hook spring 15, one end is fixed to the lock hook 12, and the other end is fixed to the base 11, so that it exerts elastic force on the lock hook 12, Create steering torque.

Specifically, the base 11 has an arc groove 111 ; the locking hook 12 has a flat plate portion 121 and a limit post 122 , which are installed on the flat plate portion 121 and are limited and accommodated in the arc groove 111 . The flat plate portion 121 is first extended upward and then horizontally bent to form a blocking piece 123 . The blocking piece 123 has a beveled edge 1231 and a straight edge 1232 connected to the beveled edge 1231 , and a stopper piece 123 is formed through the flat plate portion 121 . A first through hole 125 , the stud 13 passes through the first through hole 125 to lock the locking hook 12 to the base 11 , so that the locking hook 12 surrounds the stud 13 in the arc groove The trajectory defined by 111 rotates.

Further, the flat plate portion 121 is bent upward to form a fixing piece 125 , the fixing piece 125 penetrates to form a second through hole 1251 , and the stud 13 simultaneously passes through the first through hole 124 and the second through hole 125 . Hole 1251, for locking the locking hook 12 on the base 11 for rotation; a retaining spring 16 for snapping the stud 13 on the surface of the fixing piece 125, so that the stud 13 and the locking hook 12 are tightly connected The height of the fixed piece 125 is lower than the stop piece 123; a spring limit shaft 18 is installed in the base 11 and passes through the inner slider 14, and a slider return spring 19 The spring limiting shaft 18 is sleeved, one end of which is lowly connected to the inner slider 14 , and the other end is lowly connected to the side wall of the base 11 .

As shown in FIG. 4 to FIG. 6 , the present invention discloses a gate, the gate has the above-mentioned secondary opening prevention mechanism 1 , and includes: a gate base 2 , and the gate base 2 accommodates the secondary opening prevention mechanism 1 . Opening mechanism 1; a gate assembly 3 covered on the gate base 2, the gate assembly 3 having a locking feature column 32 and an opening transmission mechanism 31, the locking feature column 32 is in the initial state before the gate is opened , exposed in the arc groove 111, and pushes the oblique side 1231 and stops at the straight side 1232 during the closing process of the gate; a gate opening key 4, the gate opening key 4 has a gate opening top A rod 41 and a telescopic sliding block top rod 42, the gate opening top rod 41 pushes the opening transmission mechanism 31 to drive the gate assembly 3 to slide, and the telescopic sliding block top rod 42 pushes the inner slider 14 slides to drive the lock hook 12 to rotate.

Further, the gate opening key 4 has a base portion 43 , and the gate opening top rod 41 and the telescopic slider top rod 42 are fixedly installed on the same side of the base portion 43 at the same time.

The description of the opening working state of the secondary opening prevention mechanism and the gate of the gate is as follows:

As shown in FIG. 7 and FIG. 8 , in the initial state, the positional state relationship between the locking feature post 32 and the locking hook 12 is shown. At this time, the locking feature post 32 and the locking hook 12 In an unlocked state (ie, the shackle is in an open state, which is maintained by the clockwise moment of the shackle spring on the shackle).

As shown in FIG. 9 , in the initial state, the retractable slider top rod 42 of the gate opening key 4 first pushes the inner slider 14 to move, and then the gate opening top rod 41 starts to contact the opening transmission mechanism 31, and push it to drive the gate to move;

As shown in FIG. 10 and FIG. 11 , after the inner slider 14 moves a short distance (9.1 mm in this embodiment), the gate opening top rod 41 starts to contact the opening transmission mechanism 31 , and the lock The hook 12 is pushed by the inner slider 14 to rotate counterclockwise by a certain angle (21 degrees in this embodiment). At this time, the acting force is above the turning point, and the torque of the lock hook spring 15 to the lock hook 12 is still Clockwise.

As shown in FIG. 12 , when the locking hook 12 is in a critical state where the torque is 0, the telescopic slider top rod 42 and the gate opening top rod 41 continue to push the inner slider 14 to move and the gate Open, the lock hook 12 continues to rotate counterclockwise under the push of the inner slider 14, when the force of the lock hook spring 15 jumps over the rotation axis of the lock hook 12 (that is, the lock hook spring force The moment generated by the lock hook is 0), and the locking feature post 32 of the gate has been disengaged from the lock hook 12 at this time, completing the complete unlocking action.

As shown in FIG. 13 , when the retractable slider push rod 42 pushes the inner slider 14 to move to the limit position, the lock hook 12 jumps over the critical state of zero torque, and the lock hook spring 15 has a positive effect on the lock hook 15 . The force of the hook 12 will generate a counterclockwise moment to reset the locking hook 12 to the locked state.

As shown in FIG. 14 to FIG. 16 , the gate opening ejector rod 41 continues to push the opening rotation mechanism 31 to open the gate. During this process, since the inner slider 14 is in the limit position and cannot be moved, it is not suitable for The reaction force of the telescopic sliding block top rod 42 causes the telescopic sliding block top rod 42 to perform telescopic motion until the gate is fully opened.

The description of the closed working state of the secondary opening prevention mechanism and the gate of the gate is as follows:

When the gate opening key 4 is pulled out, the gate will be automatically closed under the action of the restoring spring force of the gate opening mechanism. During this process, as shown in FIG. 17 to FIG. 21 , the The acting force of the locking feature post 32 on the lock hook 12 can be decomposed into two forces in the horizontal direction and the vertical direction, wherein the vertical force can make the lock hook 12 open, and the lock hook spring 15 is the moment generated by the lock hook. Still in a counterclockwise direction, when the gate locking feature post 32 returns, the lock hook 12 will automatically return to a horizontal state under the force of the lock hook spring 15 . During the entire process of closing and resetting the gate, the retractable slider top rod 41 performs telescopic motion and pushes against the inner slider 14, so that the inner slider 14 cannot completely complete the reset action.

As shown in FIG. 22 , the gate opening key 4 continues to be pulled out after the gate is reset and closed, and the retractable slider top rod 42 will leave the inner slider 14 , and the inner slider 14 is in Under the elastic force of the slider reset spring 19, it is completely reset; after the inner slider 14 is completely reset, it will form a self-locking on the lock hook 12, so that the lock hook 12 cannot be opened, so as to realize the The effect that the gate cannot be opened twice.

The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of the present invention. Scope of protection claimed.

Claims (8)

1. a mechanism for preventing secondary opening, characterized in that, comprising: a base, the base has an arc groove; A lock hook is accommodated in the base. The lock hook has a flat plate portion and a limit post, which is installed on the flat plate portion and is limitedly accommodated in the arc groove. The flat plate portion first extends upward and then horizontally. Bending to form a blocking piece, the blocking piece has a hypotenuse and a straight side connected with the hypotenuse, a first through hole is formed through the flat plate portion, and a stud passes through the first pass The hole locks the locking hook on the base, so that the locking hook rotates around the trajectory defined by the stud and the arc groove; an inner slider, accommodated in the base, and pushes the lock hook to rotate; a lock hook spring, one end is fixed on the lock hook, and the other end is fixed on the base, so that it applies elastic force to the lock hook to form a steering torque; During the gate opening process, the steering torque of the lock hook spring to the lock hook first gradually changes from clockwise torque to 0, and then gradually changes from 0 to counterclockwise torque; during the closing process of the gate, the gate Pushing the inclined surface drives the lock hook to rotate, and when the lock hook is completely reset, the straight side stops the gate from moving, preventing the gate from being opened twice. 2 . The mechanism for preventing secondary opening according to claim 1 , wherein the flat plate portion is bent upward to form a fixing piece, the fixing piece penetrates to form a second through hole, and the stud passes through the fixing piece at the same time. 3 . The first through hole and the second through hole allow the locking hook to be locked on the base to rotate. 3 . The mechanism for preventing secondary opening as claimed in claim 2 , wherein a retaining spring clamps the stud on the surface of the fixing plate, so that the stud and the locking hook are fastened and installed. 4 . 4 . The mechanism for preventing secondary opening according to claim 2 , wherein the height of the fixing piece is lower than that of the blocking piece. 5 . 5 . The mechanism for preventing secondary opening according to claim 1 , further comprising an outer sliding block, the outer sliding block is located outside the base and assembled with the inner sliding block, so that the inner The slider slides stably in the base. 6 . The mechanism for preventing secondary opening according to claim 1 , wherein a spring limiting shaft is installed in the base and passes through the inner slider, and a slider return spring is sleeved on the A spring limiting shaft, one end of which is lowly connected to the inner sliding block, and the other end is lowly connected to the side wall of the base. 7. A gate, the gate having the mechanism for preventing secondary opening according to any one of claims 1 to 6, characterized in that, comprising: a gate base, the gate base accommodates the secondary opening prevention mechanism; A gate assembly is covered on the gate base, the gate assembly has a locking feature column and an opening transmission mechanism, the locking feature column is exposed in the arc groove in the initial state before the gate is opened, and is opened at the gate. Pushing the oblique side and blocking the straight side during the closing process of the gate; A gate opening key, the gate opening key has a gate opening mandrel and a telescopic slider mandrel, the gate opening mandrel pushes the opening transmission mechanism to drive the gate assembly to slide, and the telescopic slide The block ejector rod pushes the inner slide block to slide and then drives the lock hook to rotate. 8 . The gate of claim 7 , wherein the gate opening key has a base, and the gate opening jack and the telescopic slider jack are fixedly installed on the same side of the base at the same time. 9 .

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