CN221096156U - Self-locking mechanism, box door lock comprising same and box body - Google Patents

Abstract

The utility model provides a self-locking mechanism, which comprises: the lock comprises a key, a key rod, a lock tongue seat, a lock tongue, a shaft, a first swing seat, a second swing seat, an unlocking PIN seat, a torsion spring, a tension spring, a compression spring and a base. The self-locking mechanism can realize unlocking (self locking) and opening (closing) of the box door lock simultaneously by only one action, and improves the operation comfort and convenience. The utility model further provides a box door lock comprising the self-locking mechanism, and a box body comprising the self-locking mechanism or the box door lock, in particular a vehicle-mounted refrigerator.

Description

Self-locking mechanism, box door lock comprising same and box body

Technical Field

The utility model relates to a self-locking mechanism, in particular to the technical field of door locks. More particularly, the present utility model relates to a self-locking mechanism or a box door lock for a vehicle-mounted refrigerator, a box body, or other box bodies used in a transportation means such as an automobile, a ship, an aerospace vehicle, or the like.

Background

In the prior art, vehicles such as automobiles, ships, aerospace vehicles and the like are generally provided with vehicle-mounted refrigerators, cabinets or other boxes, and as the boxes are applied to the vehicles, the boxes jolt along with the movement of the vehicles, particularly when traffic accidents occur, under strong impact, the doors of the boxes are sprung out, and things in the boxes are sprung out to hurt people. In addition, the household refrigerator or other refrigerator bodies can cause safety accidents after accidents or misoperation of children.

The traditional self-locking mechanism is large in structure and heavy in weight, and is not suitable for occasions such as a vehicle-mounted refrigerator. In addition, conventional self-locking mechanisms typically require two actions to unlock (self) the door and to open (close) the door, are relatively complex to operate, and are inconvenient to use on a vehicle. Furthermore, the conventional self-locking mechanism often causes a locking phenomenon of the door lock due to the asynchronous movement of the lock tongue.

Thus, there is a need for an improved self-locking mechanism that ameliorates the aforementioned disadvantages.

Disclosure of utility model

It is therefore an object of the present utility model to provide a self-locking mechanism which is particularly suitable for use on vehicles such as automobiles, ships, aerospace vehicles and the like. The self-locking mechanism can provide a self-locking function for a door lock of a vehicle-mounted refrigerator, for example, so that the door of the vehicle-mounted refrigerator cannot be sprung open when a traffic accident occurs. In addition, the self-locking mechanism has higher integration level, can provide unlocking (self) and opening (closing) of the door lock in a small space, and meets the space requirement of the vehicle-mounted refrigerator. Meanwhile, the self-locking mechanism can realize unlocking (self) and opening (closing) of the door lock simultaneously by only one action, thereby meeting the requirements of the vehicle-mounted refrigerator on the aspects of operation convenience, comfort and the like.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a self-locking mechanism for a door of a vehicle, comprising: the lock comprises a key, a key rod, a lock tongue seat, a lock tongue, a shaft, a first swing seat, a second swing seat, an unlocking PIN seat, a torsion spring, a tension spring, a compression spring and a base. The first pendulum seat comprises a body, a shaft hole, a limit column, a pushing plate and a side column. The first pendulum is mounted on the base via a shaft. Specifically, the shaft may pass through the shaft hole of the first swing seat and the through hole of the base center block to fix the first swing seat to the base. The first swing seat is further connected to the first side wall of the base through a tension spring. The second pendulum seat comprises a body, a connecting arm and a baffle. The second swing seat is mounted on the base through a torsion spring. Specifically, the second pendulum is mounted via a torsion spring on a base center post of the base, which is located on the base center block. One end of the lock tongue is connected to the distal end of the connecting arm of the second swing seat, and the other end is inserted into the lock tongue seat and has an inclined front end surface. The button is installed in the upper end of button pole, and the lower extreme of button pole is connected in one side of the body of first pendulum seat, and this side is with first lateral wall homonymy for when pressing the button, the button can make first pendulum seat rotate around the axle via the button pole.

The unlocking PIN seat, the pressure spring and the unlocking PIN are sequentially arranged on the base. Specifically, the unlocking PIN holder has a bottom mounting portion and a body that provides a space for accommodating the compression spring and the unlocking PIN, and that has a through hole at its top to allow a center post of the unlocking PIN to pass therethrough while preventing a base portion of the unlocking PIN from passing therethrough, the body being opened at a side close to the first swing holder to allow a vertical side wall of the unlocking PIN to be in contact-fit with the first swing holder. The unlocking PIN has a central column and a base with a vertical side wall on the side close to the first pendulum. The vertical sidewall has a horizontal top surface and an inclined bottom surface. The side post of the first swing seat is positioned on one side of the first side wall of the base and is provided with a lateral protrusion on the side close to the unlocking PIN. The lateral projection has an inclined top surface and a horizontal bottom surface. The inclined top surface of the lateral protrusion matches the inclined bottom surface of the vertical sidewall of the unlocking PIN such that when the unlocking PIN is pressed, the unlocking PIN can force the first pendulum to rotate about the shaft such that the limit post on the first pendulum is withdrawn from the limit stop of the locking bolt.

In the unlocking process of the self-locking mechanism of the utility model:

When the key is pressed vertically, the key is pressed down, the key rod moves downwards to drive the first swing seat to rotate around the shaft, and the limiting column on the first swing seat withdraws from the limiting spigot of the lock tongue. At this time, the unlocking of the self-locking mechanism can be realized, and the lock tongue is allowed to move horizontally.

The key is continuously pressed, the key rod continuously moves downwards to drive the first swing seat to rotate around the shaft, and the pushing plate on the first swing seat abuts against the baffle plate of the second swing seat and pushes the second swing seat to rotate. At this time, the latch bolt is horizontally moved backward by the rotation of the second swing seat, and withdrawn from the latch to allow the door to be opened.

After the box door is opened, the key is released, and at the moment, all parts of the self-locking mechanism are automatically reset to original positions under the action of the torsion spring and the tension spring.

In the self-locking process of the self-locking mechanism of the utility model:

After taking away the article in the box of on-vehicle refrigerator for example, the user can close the chamber door, and the unblock PIN is pushed down to the chamber door this moment, and the inclined bottom surface of the vertical lateral wall of unblock PIN presses the protruding slope top surface of side column of first pendulum for first pendulum is rotatory around the axle, and spacing post on the first pendulum withdraws from the spacing tang of spring bolt this moment, realizes the unblock of self-locking mechanism, in order to allow spring bolt horizontal migration.

And continuously closing the box door, wherein a lock catch on the box door presses down the inclined surface at the front end of the lock tongue at the moment, and pushes the lock tongue to move horizontally and backwards until the box door is completely closed.

When the box door is completely closed, the lock tongue is inserted into the lock catch of the box door, all parts (except the unlocking PIN and the pressure spring) of the self-locking mechanism are automatically reset to the original positions under the action of the torsion spring and the tension spring, and the limiting column on the first swing seat is locked in the limiting spigot of the lock tongue, so that the whole self-locking mechanism realizes self locking.

At this time, the unlocking PIN continues to move downward due to the continuous depression of the door such that the horizontal top surface of the vertical sidewall of the unlocking PIN is located below the horizontal bottom surface of the lateral protrusion of the first swing seat, thereby restricting the horizontal top surface of the vertical sidewall of the unlocking PIN below the horizontal bottom surface of the lateral protrusion of the first swing seat, preventing it from preventing the first swing seat from being reset.

The unlocking PIN can be released from the lateral protrusion of the first swing seat along with the rotation of the first swing seat around the shaft driven by the pressing key in the unlocking process, and is reset to the original position by the acting force of the pressure spring.

Preferably, the self-locking mechanism of the present utility model has two locking tongues in pairs of opposite orientation.

Preferably, the end of the lock tongue of the self-locking mechanism inserted into the lock tongue seat of the present utility model has a wedge-shaped front end.

Preferably, the lower end of the key lever of the self-locking mechanism of the present utility model is hinged to the base of the body of the first swing seat.

The utility model further provides a door lock comprising the self-locking mechanism.

The utility model further provides a cabinet, in particular a refrigerator, more particularly a vehicle-mounted refrigerator, comprising a self-locking mechanism or a cabinet door lock as described above.

The utility model has the beneficial effects that: the self-locking mechanism can realize unlocking and opening of the box door lock simultaneously by only one action (pressing a key) when the door is opened, and can realize closing and self-locking by only one action (closing the box door) when the door is closed, so that the operation comfort and convenience of a vehicle-mounted refrigerator are greatly improved. In addition, the self-locking mechanism of the utility model significantly improves the safety of, for example, a vehicle-mounted refrigerator due to the self-locking function thereof, and significantly reduces the space requirement and the self weight due to higher integration. In addition, the self-locking mechanism further improves consistency control of the lock tongue, and reduces clamping stagnation of the door lock caused by asynchronous lock tongue.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic illustration of an embodiment of a self-locking mechanism of the present utility model;

FIG. 2 is an exploded perspective view of an embodiment of the self-locking mechanism of the present utility model;

FIG. 3 is a partial schematic view of an embodiment of the self-locking mechanism of the present utility model showing the manner in which the first pendulum is mounted;

FIG. 4 is a partial schematic view of an embodiment of the self-locking mechanism of the present utility model showing the manner in which a tension spring is installed;

FIG. 5 is a partial schematic view of an embodiment of the self-locking mechanism of the present utility model showing the manner in which the second pendulum is mounted;

FIG. 6 is a side view of an embodiment of the self-locking mechanism of the present utility model and a cross-sectional view at the unlock PIN, showing the manner in which the unlock PIN mechanism is installed;

FIGS. 7-10 illustrate the unlocking process of an embodiment of the self-locking mechanism of the present utility model;

Fig. 11-13 illustrate the self-locking process of the self-locking mechanism embodiment of the present utility model.

Detailed Description

Reference will now be made in detail to the preferred embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the like or similar elements or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Referring first to fig. 1, there is shown a basic application of the self-locking mechanism of the present utility model, in which a case, such as a refrigerator in a vehicle, applied to a vehicle such as an automobile, a ship, an aerospace vehicle, etc., generally includes a door 15 and a door frame 14. The door 15 has two catches 16, 17 in pairs, the door frame 14 having a recess matching it, to allow it to accommodate said catches 16, 17. The door frame 14 is further provided with the self-locking mechanism of the utility model, the locking tongues 4, 5 of which can be inserted into the grooves of the respective catches 16, 17, respectively, in order to lock the door 15.

With further reference to fig. 2, there is shown an exploded perspective view of the self-locking mechanism of the present utility model. The self-locking mechanism comprises a key 1, a key rod 2, a lock tongue seat 3, lock tongues 4 and 5, a shaft 6, a first swing seat 7, a second swing seat 8, an unlocking PIN9, an unlocking PIN seat 10, a torsion spring 11, a tension spring 12, a pressure spring 13 and a base 18.

With further reference to fig. 2-4, it can be seen that the first pendulum seat 7 is mounted on the base 18 via the shaft 6. Specifically, the shaft 6 may pass through the shaft hole of the first swing seat 7 and the through hole of the base center block to fix the first swing seat 7 to the base 18. Further, the first swing seat 7 is connected to the first side wall of the base 18 via a tension spring 12. The key 1 is mounted on the upper end of the key lever 2, and the lower end of the key lever 2 is connected to one side of the first swing seat 7, which is on the same side as the first side wall, so that when the key 1 is pressed, the key 1 can rotate the first swing seat 7 around the shaft 6 via the key lever 2.

With further reference to fig. 5, the second pendulum 8 is mounted on the base 18 via a torsion spring 11. Specifically, the second pendulum 8 is mounted via a torsion spring 11 on a base center post of a base 18, which is located on a base center block. One end of the lock tongue 4, 5 is connected to the distal end of the connecting arm of the second swing seat 8, and the other end is inserted into the lock tongue seat 3.

With further reference to fig. 6, the unlocking PIN holder 10, the compression spring 13 and the unlocking PIN9 are mounted on the base 18 in sequence, wherein the unlocking PIN holder 10 has a bottom mounting portion and a body providing a space for accommodating the compression spring 13 and the unlocking PIN9, and the body has a through hole at its top to allow the center post of the unlocking PIN9 to pass therethrough while preventing the base of the unlocking PIN9 from passing therethrough, the body being opened at a side close to the first swing 7 to allow the vertical side wall of the unlocking PIN9 to be in contact-fit with the first swing 7. The unlocking PIN9 has a central column and a base with a vertical side wall on the side close to the first pendulum 7. The vertical sidewall has a horizontal top surface and an inclined bottom surface. The jamb of the first pendulum 7 is located on the first side wall side of the base and has a lateral projection on the side close to the unlocking PIN 9. The lateral projection has an inclined top surface and a horizontal bottom surface. The inclined top surface of the lateral projection matches the inclined bottom surface of the vertical side wall of the unlocking PIN9, so that when the unlocking PIN9 is pressed, the unlocking PIN9 can force the first pendulum 7 to rotate about the axis, so that the limit posts 21, 22 on the first pendulum 7 are withdrawn from the limit stops 23, 24 of the locking tongues.

Referring further to fig. 7-10, the unlocking process of the self-locking mechanism of the present utility model is shown.

Referring to fig. 7 to 8, when the key 1 is pressed vertically, the key 1 is pressed down, and the key lever 2 moves downward to drive the first swing seat 7 to rotate around the shaft 6, and the limit posts 21 and 22 on the first swing seat 7 withdraw from the limit stops 23 and 24 of the lock tongues 4 and 5, respectively. At this time, unlocking of the self-locking mechanism can be realized, allowing the lock tongues 4, 5 to move horizontally.

Referring to fig. 9, continuing to press the key 1, the key lever 2 continues to move downwards to drive the first swinging seat 7 to rotate around the shaft 6, and the pushing plate 20 on the first swinging seat 7 abuts against the baffle 25 of the second swinging seat 8 and pushes the second swinging seat 8 to rotate. At this time, the locking bolts 4, 5 are horizontally moved rearward by the rotation of the second swing seat 8, and withdrawn from the catches 16, 17 to allow the door 15 to be opened.

Referring to fig. 10, after the door 15 is opened, the key 1 is released, and at this time, the components of the self-locking mechanism are automatically restored to the original positions due to the torsion spring 11 and the tension spring 12.

With further reference to fig. 11-13, the self-locking process of the self-locking mechanism of the present utility model is illustrated.

Referring to fig. 1 and 11-12, after taking the articles in the case of, for example, a car refrigerator, the user can close the door 15, at this time the door 15 presses down the unlocking PIN9, the inclined bottom surface of the vertical sidewall of the unlocking PIN9 presses the inclined top surface of the lateral protrusion of the side post 19 of the first swinging seat 7, forcing the first swinging seat 7 to rotate around the shaft 6, so that the limit posts 21, 22 on the first swinging seat 7 withdraw from the limit stops 23, 24 of the locking tongues 4, 5, respectively, unlocking the self-locking mechanism is realized, allowing the locking tongues 4, 5 to move horizontally.

Continuing to close the door 15, the latches 16 and 17 on the door 15 respectively press the inclined surfaces at the front ends of the bolts 4 and 5, and push the bolts 4 and 5 to move horizontally and backwards until the door 15 is completely closed.

Referring to fig. 13, when the door 15 is completely closed, the components of the self-locking mechanism (except for the unlocking PIN9 and the compression spring 13) are automatically reset to the original positions due to the action of the torsion spring 11 and the tension spring 12, and the limit posts 21 and 22 on the first swing seat 7 are locked in the limit stops 23 and 24 of the lock tongues 4 and 5, so that the whole self-locking mechanism realizes self locking.

At this time, the unlocking PIN9 continues to move downward due to the continuous depression of the door 15, so that the horizontal top surface of the vertical side wall of the unlocking PIN9 is located below the horizontal bottom surface of the lateral protrusion of the first swing seat 7.

The unlocking PIN 9 is released from the lateral protrusion of the first swing seat 7 by rotating the first swing seat 7 around the shaft 6 along with the pressing of the key 1 in the unlocking process, and is reset to the original position by the acting force of the pressure spring 13.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "high", "low", "front", "rear", and "concave", "convex", etc. indicate orientations, positional relationships, or shapes based on the orientations, positional relationships, or shapes shown in the drawings, are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation configuration and operation, and thus are not to be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used merely for descriptive purposes and not to be construed as indicating or implying relative importance or order.

While the preferred embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that combinations, variations, modifications, alternatives and variations of the above embodiments may be made by those skilled in the art within the scope of the utility model.

Claims (10)

1. A self-locking mechanism, characterized in that the self-locking mechanism comprises: the key, the key rod, the lock tongue seat, the lock tongue, the shaft, the first swing seat, the second swing seat, the unlocking PIN seat, the torsion spring, the tension spring, the compression spring and the base,

The first swinging seat comprises a body, a shaft hole, a limit column, a pushing plate and a side column, the first swinging seat is arranged on the base through the shaft and is connected with a first side wall of the base through the tension spring,

The second swing seat comprises a body, a connecting arm and a baffle plate, the second swing seat is arranged on the base through the torsion spring, one end of the lock tongue is connected with the far end of the connecting arm of the second swing seat, the other end of the lock tongue is inserted into the lock tongue seat and is provided with an inclined front end surface,

The key is arranged at the upper end of the key rod, the lower end of the key rod is connected with one side of the body of the first swing seat, the side is the same with the first side wall,

The unlocking PIN has a central column and a base part, the base part has a downwardly extending vertical side wall on the side close to the first swing seat, the vertical side wall has a horizontal top surface and an inclined bottom surface, the side column of the first swing seat is positioned on the side of the first side wall of the base, and a lateral protrusion on the side close to the unlocking PIN, the lateral protrusion has an inclined top surface and a horizontal bottom surface, the inclined top surface of the lateral protrusion is matched with the inclined bottom surface of the vertical side wall of the unlocking PIN,

The unlocking PIN seat is provided with a bottom mounting part and a body, the unlocking PIN seat is mounted on the base through the bottom mounting part, the body of the unlocking PIN seat provides a space for accommodating the pressure spring and the unlocking PIN, the body of the unlocking PIN seat is provided with a through hole at the top to allow a center column of the unlocking PIN to pass through and prevent a base of the unlocking PIN from passing through, and the body of the unlocking PIN seat is opened at one side close to the first swing seat to allow a vertical side wall of the unlocking PIN to be in contact fit with the first swing seat.

2. The self-locking mechanism of claim 1, wherein the shaft passes through the shaft hole of the first pendulum and the through hole of the base center block of the base to secure the first pendulum to the base.

3. The self-locking mechanism of claim 2, wherein the second pendulum is mounted to a base center post of the base via the torsion spring, the base center post being located on the base center block.

4. The self-locking mechanism of claim 1, wherein the locking bolt is a pair of two locking bolts of opposite orientation.

5. The self-locking mechanism of claim 1, wherein the end of the locking bolt that is inserted into the bolt seat has a wedge-shaped front end.

6. The self-locking mechanism of claim 1, wherein the lower end of the key lever is hinged to the base of the body of the first swing.

7. A door lock, characterized in that it comprises a self-locking mechanism according to any one of claims 1-6.

8. A box comprising a self-locking mechanism according to any one of claims 1 to 6 or a box door lock according to claim 7.

9. The cabinet of claim 8, wherein the cabinet is a refrigerator.

10. The cabinet of claim 9, wherein the refrigerator is a vehicle-mounted refrigerator.