Child lock mechanism for vehicle-mounted refrigerator door

Abstract

The child lock mechanism comprises a box body with an opening in the upper portion and an upper cover, and a lock groove is formed in the lower portion of the front side of the upper cover. The child lock assembly comprises a spring bolt, the spring bolt comprises a bent bolt part and a torsional spring assembly, an abutting piece is arranged below the spring bolt, when the child lock is opened, the spring bolt moves upwards on the abutting piece below the spring bolt to abut against the spring bolt, and the bent bolt part of the spring bolt penetrates through the lock opening of the lower cover to be matched with the interior of the lock groove of the upper cover. At the moment, the locking plane makes contact with and abuts against the upper surface of the groove edge in the horizontal direction, upward movement of the upper cover is limited, a stable locking state is formed, children are effectively prevented from accidentally opening the refrigerator door, and driving safety is guaranteed; when the child lock is in the opened state, automatic locking of the refrigerator in the closing process can be achieved, additional operation of a user is not needed, and use convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted refrigerators, in particular to a child lock mechanism for a vehicle-mounted refrigerator door. Background Art

[0002] With the popularization of automotive culture and the development of technology, the user-friendly design of vehicle-mounted devices has been increasingly emphasized. Among them, as an important accessory to improve the quality of travel, the safety and convenience of vehicle-mounted refrigerators have become the focus of consumers' attention. Especially in the scenario of family travel, ensuring children's safety has become a basic requirement. Although traditional vehicle-mounted refrigerators provide the function of refrigeration and preservation, they are insufficient in preventing accidental opening caused by children's misoperation. Most vehicle-mounted refrigerators on the market are equipped with a child lock function, aiming to restrict children from randomly opening the refrigerator door and avoiding safety problems such as cold air leakage, food contamination, or children coming into contact with inedible items.

[0003] However, most of the existing child lock mechanisms for vehicle-mounted refrigerators rely on manual operation, that is, users need to manually open or close the child lock before and after each use. This process is cumbersome and easily forgotten. When parents fail to lock it in time due to negligence, children may take the opportunity to open the refrigerator door, causing unnecessary trouble or even potential safety hazards. In addition, the design of manual child locks is often relatively simple, achieved through buttons or sliders for locking, with low technical content and difficult to meet the modern consumers' pursuit of intelligence and automation. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a child lock mechanism for a vehicle-mounted refrigerator door, which has the characteristics of simple structure and being relatively stable and reliable after being locked.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A child lock mechanism for a vehicle-mounted refrigerator door, including a box body with an opening at the upper part, an upper cover provided on the box body that can close or open the opening of the box body, a lock groove provided below the front side of the upper cover, and a child lock assembly provided on the box body that can cooperate with the lock groove and keep the upper cover in a closed state.

[0007] The child lock assembly includes a lock tongue, the lock tongue includes a first strip-shaped part, a bent tongue part provided at the upper end of the first strip-shaped part and bent backward and capable of inserting into the lock groove, a torsion spring assembly provided at the lower end of the first strip-shaped part that can make the bent tongue part have a forward rotation tendency to disengage from the lock groove, and a telescopic abutting member provided below the lock tongue, and the abutting member abuts against the lower part of the lock tongue to limit the forward rotation of the bent tongue part under the elastic force of the torsion spring assembly.

[0008] A lower cover that can cooperate with the upper cover is fixedly arranged above the box body, the rear side of the upper cover is hingedly connected to the lower cover, a lower cover groove is arranged on the upper surface of the front side of the lower cover, and an upper cover protrusion that can cooperate with the lower cover groove is arranged at the lower part of the front side of the upper cover;

[0009] The locking groove is arranged on the front side of the upper cover protrusion, and the front side wall of the lower cover groove is provided with a locking opening, and the bent tongue portion can pass through the locking opening and abut against the lower bottom surface of the locking groove to limit the upper cover from moving upward.

[0010] The rear end surface of the bent tongue portion forms an upwardly inclined lock tongue slope, a groove edge extending forward is formed below the lock groove, the upper end of the abutment is made of soft elastic material, and when the upper cover moves downward, the groove edge can abut the lock tongue slope and push the bent tongue portion to rotate forward.

[0011] The child lock assembly includes a fixed shell fixedly installed on the box body, and the lock tongue also includes a second strip portion bent forward at the lower end of the first strip portion, a pin shaft passes through the bending part of the first strip portion and the second strip portion, the torsion spring assembly is arranged on the pin shaft, and the lock tongue is hinged on the fixed shell through the pin shaft.

[0012] The lower surface of the rear end of the bent tongue portion forms a locking plane, and the locking plane contacts and abuts against the upper surface of the groove in a horizontal direction to limit the upper cover from moving upward.

[0013] The child lock assembly includes an electric drive module, and the extension and retraction of the abutment member is driven and controlled by the electric drive module.

[0014] The fixed shell is provided with an electric drive module capable of driving and controlling the abutment member to extend and retract upward and downward.

[0015] The electric drive module includes a drive motor and a control module connected to the vehicle computer.

[0016] The beneficial effects of the utility model are:

[0017] 1. Safe and stable locking: When the child lock is turned on, the lock tongue moves up on the abutment below to hold the lock tongue. The bent tongue of the lock tongue passes through the lock opening of the lower cover and fits into the lock groove of the upper cover. At this time, the bent tongue is fixed and cannot rotate. The locking plane contacts and abuts against the upper surface of the groove in the horizontal direction, so that the upper cover is limited to move upward, forming a stable locking state, effectively preventing children from accidentally opening the refrigerator door and ensuring driving safety.

[0018] 2. Quick and convenient locking: When the upper cover is in the open state and the child lock is also in the open state, when the upper cover moves down to close, the groove edge of the lock groove abuts against the inclined surface of the lock tongue of the bent tongue part, pushing the bent tongue part forward. Since the upper end of the abutment can undergo a certain deformation, the bent tongue part rotates forward until the bent tongue part is out of the lock groove. When the upper cover moves down to the closed state, the upper surface of the abutment part returns to its original state, the bent tongue part rebounds into the lock groove, the locking plane contacts and abuts against the upper surface of the groove edge, and the upper cover is limited in its upward movement. When the child lock is in the open state, the refrigerator is automatically locked during the closing process without the need for additional user operations, which greatly improves the convenience of use.

[0019] 3. Simple structure and high reliability: The main component of the child lock mechanism is the lock tongue. The elastic force of the torsion spring assembly makes the lock tongue tend to rotate forward, that is, when the abutment moves downward, the bent tongue can automatically disengage from the lock slot under the action of the torsion spring, and the child lock state is closed; when the abutment moves upward, the elastic force of the torsion spring is overcome, the lock tongue rotates backward, the bent tongue cooperates with the lock slot, the child lock state is opened, and the upward movement of the lower cover is limited.

[0020] 4. Intelligent control and flexibility: The child lock mechanism mainly opens or closes the child lock by moving the abutment up and down. The abutment is driven and controlled by the electric drive module, and the electric drive module is connected to the car computer. The car computer can facilitate the management of the child lock and view the status of the child lock. Furthermore, the user can also customize the time and logic of opening the child lock. It has great scalability, enhanced intelligence, and greatly improved the safety performance and user experience of the car refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the appearance structure of the car refrigerator;

[0022] Figure 2 It is a schematic diagram of the exploded structure of the child lock assembly;

[0023] Figure 3 It is a schematic diagram of the structure of the lock tongue;

[0024] Figure 4 It is a schematic diagram of the assembly of the child lock component and the upper cover;

[0025] Figure 5 is a cross-sectional view of the child lock assembly during the process of the upper cover moving downward and closing;

[0026] Figure 6 is a cross-sectional view of the child lock assembly when the bent tongue abuts against the lock groove;

[0027] Figure 7 is a cross-sectional view of the child lock assembly when the bent tongue is engaged with the lock groove;

[0028] Figure 8 It is a cross-sectional view of the child lock assembly when the child lock is closed. DETAILED DESCRIPTION

[0029] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of them.

[0030] Reference Figure 1 , Figure 2 The utility model proposes a child lock mechanism for a vehicle refrigerator door, comprising a box body 1 with an opening at the top, an upper cover 21 which can close or open the opening of the box body 1, a lock groove 2100 is provided at the lower front side of the upper cover 21, and a child lock assembly 3 which can cooperate with the lock groove 2100 and keep the upper cover 21 in a closed state is provided on the box body 1;

[0031] Reference Figure 2-4 The child lock assembly 3 includes a lock tongue 33, which includes a first strip portion 331, a bent tongue portion 330 disposed at the upper end of the first strip portion 331 and bent backward to be inserted into the lock slot 2100, a torsion spring assembly 35 is disposed at the lower end of the first strip portion 331 to enable the bent tongue portion 330 to rotate forward to escape from the lock slot 2100, the torsion spring assembly 35 is disposed at both sides of the first strip portion 331, and a retractable abutment member 32 is disposed below the lock tongue 33, the upper surface of the abutment member 32 abuts against the lower part of the lock tongue 33 to limit the bent tongue portion 330 from rotating forward under the elastic force of the torsion spring assembly 35. Preferably, the upper surface of the abutment member 32 is an arc surface.

[0032] Reference Figure 1 A lower cover 20 that can cooperate with the upper cover 21 is fixedly provided on the box body 1, the rear side of the upper cover 21 is hingedly connected to the lower cover 20, a lower cover groove 200 is provided on the upper surface of the front side of the lower cover 20, and an upper cover protrusion 210 that can cooperate with the lower cover groove 200 is provided on the lower part of the front side of the upper cover 21;

[0033] Reference Figure 1 , Figure 7 The locking groove 2100 is arranged on the front side of the upper cover protrusion 210, and the front side wall of the lower cover groove 200 is provided with a locking opening 2000. The bent tongue portion 330 can pass through the locking opening 2000 and abut against the lower bottom surface of the locking groove 2100 to limit the upper cover 21 from moving upward.

[0034] Furthermore, when the child lock is opened, the lock tongue 33 moves up on the abutment 32 below to support the lock tongue 33, and the bent tongue portion 330 of the lock tongue 33 passes through the lock opening 2000 of the lower cover 20 and cooperates with the lock groove 2100 of the upper cover 21. At this time, the bent tongue portion 330 is fixed in position and cannot rotate. The locking plane 3301 contacts and abuts against the upper surface of the groove edge 2101 in the horizontal direction, so that the upward movement of the upper cover 21 is restricted, forming a stable locking state, effectively preventing children from accidentally opening the refrigerator door, and ensuring driving safety.

[0035] Reference Figure 5 , Figure 6 The rear end surface of the bent tongue portion 330 forms an upwardly inclined lock tongue inclined surface 3300, and a groove edge 2101 extending forward is formed under the lock groove 2100. The upper end of the abutment 32 is made of a soft elastic material. Optionally, a rubber layer or a soft rubber layer of a certain thickness is provided on the upper surface of the abutment 32. When the upper cover 21 moves downward, the groove edge 2101 can abut the lock tongue inclined surface 3300 and push the bent tongue portion 330 to rotate forward.

[0036] Furthermore, when the upper cover 21 is in the open state and the child lock is also in the open state, during the process of the upper cover 21 moving downward to close, the groove edge 2101 of the lock groove 2100 abuts against the lock tongue inclined surface 3300 of the bent tongue portion 330, pushing the bent tongue portion 330 forward, and because the upper end of the abutment 32 can undergo a certain deformation, the bent tongue portion 330 rotates forward until the bent tongue portion 330 is separated from the lock groove 2100. The arc-shaped upper surface of the abutment 32 further increases the elasticity of the upper surface of the abutment 32, which is conducive to the forward rotation of the lock tongue 33 when the force is applied. When the upper cover 21 moves downward to the closed state, the upper surface of the abutment 32 returns to its original state, the bent tongue portion 330 rebounds into the lock groove 2100, the locking plane 3301 contacts and abuts against the upper surface of the groove edge 2101, and the upper cover 21 is limited in its upward movement. When the child lock is in the open state, the refrigerator is automatically locked during the closing process without the need for additional operations by the user, which greatly improves the convenience of use.

[0037] Reference Figure 2 , Figure 3 The child lock assembly 3 includes a fixed shell 30 fixedly installed on the box body 1, and the lock tongue 33 also includes a second strip portion 332 bent forward at the lower end of the first strip portion 331. A pin shaft 34 passes through the bending part of the first strip portion 331 and the second strip portion 332. The torsion spring assembly 35 is arranged on the pin shaft 34, and the lock tongue 33 is hinged on the fixed shell 30 through the pin shaft 34.

[0038] Furthermore, the lock tongue 33, a main component of the child lock mechanism, utilizes the elastic force of the torsion spring assembly 35 to make the lock tongue 33 tend to rotate forward, that is, when the abutment 32 moves downward, the bent tongue portion 330 can automatically disengage from the lock slot 2100 under the action of the torsion spring, and the child lock state is closed; when the abutment 32 moves upward, the elastic force of the torsion spring is overcome, the lock tongue 33 rotates backward, the bent tongue portion 330 cooperates with the lock slot 2100, the child lock state is opened, and the upward movement of the lower cover 21 is restricted.

[0039] Reference Figure 2 or Figure 4 An electric driving module 31 for driving the abutment member 32 to move up and down is installed on the fixed housing 30.

[0040] Reference Figure 7 The lower surface of the rear end of the bent tongue portion 330 forms a locking plane 3301, which contacts and abuts against the upper surface of the groove edge 2101 in the horizontal direction to limit the upper cover 21 from moving upward. At this time, when the upper cover 21 is pulled upward, the upper surface of the groove edge 2101 exerts a force on the locking plane 3301 vertically upward, which is the dead point of the force on the lock tongue 33. The lock tongue 33 has no tendency to rotate, and under the top contact of the abutment member 32, the lock tongue 33 is further limited from rotating forward, ensuring that the bent tongue portion 330 maintains the matching state with the lock groove 2100.

[0041] Reference Figure 1 , Figure 6 The middle of the lower cover 20 is provided with an upper opening 201 which is connected with the opening of the box body 1. The lower surface of the upper cover 21 is provided with a rubber ring 211 which can be sealed with the edge of the upper opening 201. The upper cover 21 is closed with the lower cover 20, and the upper opening 201 fits the rubber ring 211, which not only strengthens the sealing of the refrigerator and reduces the loss of cold, but also further improves the stability and durability of the overall structure, ensuring the good performance of the refrigerator under various road conditions. When the child lock is in the closed state, the bent tongue portion 330 is separated from the lock groove 2100, and the upper cover 21 and the lower cover 20 are also maintained in the closed state.

[0042] Furthermore, the electric drive module 31 includes a drive motor and a control module connected to the vehicle computer. The child lock mechanism mainly opens or closes the child lock by moving the abutment 32 up and down. The abutment 32 is driven and controlled by the electric drive module 31. The electric drive module 31 is connected to the vehicle computer. The vehicle computer can facilitate the management of the child lock and check the status of the child lock. Furthermore, the user can also customize the time and logic of opening the child lock. For example, through the vehicle computer networking, the status of the refrigerator and the status of the child lock can be remotely checked, and the timing of unlocking can be automatically defined. It has greater expansibility, enhanced intelligence, and greatly improved the safety performance and user experience of the vehicle refrigerator.

Claims

1. A child lock mechanism for a vehicle refrigerator door, characterized in that: The invention comprises a box body (1) with an opening at the top, the box body (1) being provided with an upper cover (21) capable of closing or opening the opening of the box body (1), a lock slot (2100) being provided at the lower front side of the upper cover (21), and the box body (1) being provided with a child lock assembly (3) capable of cooperating with the lock slot (2100) and enabling the upper cover (21) to remain in a closed state; The child lock assembly (3) comprises a lock tongue (33), the lock tongue (33) comprising a first strip portion (331), a bent tongue portion (330) arranged at the upper end of the first strip portion (331) and bent backwards to be inserted into the lock slot (2100), a torsion spring assembly (35) is arranged at the lower end of the first strip portion (331) to enable the bent tongue portion (330) to have a tendency to rotate forward to escape from the lock slot (2100), a retractable abutment (32) is arranged below the lock tongue (33), the abutment (32) abuts against the lower part of the lock tongue (33) to limit the bent tongue portion (330) from rotating forward under the elastic force of the torsion spring assembly (35).

2. A child lock mechanism for a vehicle refrigerator door according to claim 1, characterized in that: A lower cover (20) capable of cooperating with the upper cover (21) is fixedly provided above the box body (1); the rear side of the upper cover (21) is hingedly connected to the lower cover (20); a lower cover groove (200) is provided on the upper surface of the front side of the lower cover (20); and an upper cover protrusion (210) capable of cooperating with the lower cover groove (200) is provided on the lower part of the front side of the upper cover (21); The locking groove (2100) is arranged on the front side of the upper cover protrusion (210), and the front side wall of the lower cover groove (200) is provided with a locking opening (2000). The bent tongue portion (330) can pass through the locking opening (2000) and abut against the lower bottom surface of the locking groove (2100) to limit the upper cover (21) from moving upward.

3. The child lock mechanism for a vehicle refrigerator door according to claim 1, characterized in that: The rear end surface of the bent tongue portion (330) forms an upwardly inclined locking tongue inclined surface (3300), and a groove edge (2101) extending forward is formed below the locking groove (2100). The upper end of the abutment member (32) is made of a soft elastic material. When the upper cover (21) moves downward, the groove edge (2101) can abut against the locking tongue inclined surface (3300) and push the bent tongue portion (330) to rotate forward.

4. The child lock mechanism for a vehicle refrigerator door according to claim 2, characterized in that: The child lock assembly (3) comprises a fixed housing (30) fixedly mounted on a box body (1); the lock tongue (33) further comprises a second strip portion (332) arranged at the lower end of the first strip portion (331) and bent forward; a pin shaft (34) passes through the bending portion between the first strip portion (331) and the second strip portion (332); the torsion spring assembly (35) is arranged on the pin shaft (34); and the lock tongue (33) is hinged to the fixed housing (30) via the pin shaft (34).

5. The child lock mechanism for a vehicle refrigerator door according to claim 3, characterized in that: The lower surface of the rear end of the bent tongue portion (330) forms a locking plane (3301), and the locking plane (3301) contacts and abuts against the upper surface of the groove edge (2101) in the horizontal direction to limit the upper cover (21) from moving upward.

6. The child lock mechanism for a vehicle refrigerator door according to claim 1, characterized in that: The child lock assembly (3) comprises an electric drive module (31), and the extension and retraction of the abutment member (32) is driven and controlled by the electric drive module (31).

7. The child lock mechanism for a vehicle refrigerator door according to claim 4, characterized in that: The fixed housing (30) is provided with an electric drive module (31) capable of driving and controlling the abutment member (32) to extend and retract upward and downward.

8. The child lock mechanism for a vehicle refrigerator door according to claim 6, characterized in that: The electric drive module (31) comprises a drive motor and a control module connected to a vehicle computer.

9. The child lock mechanism for a vehicle refrigerator door according to claim 2, characterized in that: The middle of the lower cover (20) is provided with an upper opening (201) which is in communication with the opening of the box body (1). The lower surface of the upper cover (21) is provided with a rubber ring (211) which can be sealed with the edge of the upper opening (201).

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