Ice breaking device in door lock, door lock and vehicle

Abstract

The utility model belongs to the technical field and discloses an ice breaking device in a door lock, the door lock and a vehicle. The ice breaking device in the door lock is located in a lock shell of the door lock and comprises a ratchet wheel, an ice breaking device and an ice breaking device, the abutting piece is arranged on the ratchet wheel, and the arrangement position of the abutting piece deviates from the axis of the ratchet wheel; the icebreaking mechanism comprises a wheel rod and a driving assembly, the wheel rod is coaxially pivoted with the ratchet wheel, the driving assembly can drive the wheel rod to rotate in the first direction, the abutting piece is located on the downstream portion of the wheel rod in the first direction, and the wheel rod can push the abutting piece when rotating in the first direction; the door lock comprises a lock catch and the ice breaking device in the door lock. The vehicle comprises the door lock. The problems that in the prior art, an icebreaking connecting rod is used for pushing a cam, then a ratchet wheel is driven, in the severe weather such as ice and snow, triggering of an automobile door switch is unstable, and the cam is prone to being damaged are solved.

Description

Technical Field

[0001] This utility model relates to the field of automotive door lock technology, and in particular to an ice-breaking device inside a door lock, a door lock, and a vehicle. Background Technology

[0002] In today's automotive manufacturing industry, the performance of door opening assistance systems is crucial, especially in cold weather, where the effectiveness of the ice-breaking device inside the door lock directly affects the vehicle's ease of use and safety.

[0003] Currently, most door unlocking systems utilize internal ice-breaking devices that employ an ice-breaking linkage to drive a cam, which in turn drives a ratchet. This traditional structure can meet ice-breaking needs in normal environments to a certain extent. When the door lock becomes difficult to open due to freezing, this structure uses mechanical transmission, with the push force of the ice-breaking linkage, to rotate the cam, thereby driving the ratchet and unlocking the door. However, this existing structure has many limitations. In extreme conditions, such as extreme cold accompanied by strong winds or blizzards, the drawbacks of this structure become apparent. On one hand, the increased viscosity or even solidification of the lubricant inside the door lock due to low temperatures significantly increases friction as the ice-breaking linkage pushes the cam. This can easily lead to unstable triggering, preventing the door from opening or closing properly, causing great inconvenience to users and potentially endangering lives in emergencies. On the other hand, excessive friction and the freezing force of ice under extreme conditions can put enormous pressure on the internal structure. Prolonged exposure to such harsh conditions can easily damage components such as ice-breaking linkages and cams, increasing vehicle maintenance costs and failure rates, and seriously affecting the overall reliability and service life of the vehicle.

[0004] In summary, the performance deficiencies of existing door lock internal ice-breaking structures under extreme conditions necessitate a new and more reliable internal ice-breaking structure to address these issues and improve the stability and reliability of vehicle door assist opening systems in various environments. Utility Model Content

[0005] The purpose of this utility model is to provide an ice-breaking device inside a door lock, a door lock, and a vehicle, aiming to solve the problems of unstable door opening and closing triggering and easy damage of the cam caused by the existing working method of using an ice-breaking linkage to push a cam and then drive a ratchet in severe weather such as ice and snow.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An ice-breaking device for a door lock, located inside the lock housing, includes:

[0008] A ratchet, which is pivotally connected to the lock housing;

[0009] An abutment is provided on the ratchet, and its position is offset from the axis of the ratchet;

[0010] An ice-breaking mechanism includes a wheel and a drive assembly. The wheel is coaxially pivotally connected to the ratchet. The drive assembly is capable of driving the wheel to rotate in a first direction. Along the first direction, an abutment is located downstream of the wheel, and the wheel can push the abutment when it rotates in the first direction.

[0011] As a preferred embodiment of an ice-breaking device inside a door lock, the abutment has a columnar structure, and the wheel rod has a groove. When the wheel rod pushes the abutment, the abutment can be positioned in the groove.

[0012] As a preferred embodiment of the ice-breaking device inside the door lock, it also includes a reset element for resetting the wheel lever.

[0013] As a preferred embodiment of the ice-breaking device inside a door lock, the reset element is a torsion spring, which is sleeved on the shaft of the ratchet, and the two ends of the torsion spring are respectively connected to the ratchet and the wheel rod.

[0014] As a preferred embodiment of an ice-breaking device inside a door lock, the drive assembly includes a pull cable and an actuator, the actuator being fixedly mounted on the lock housing, one end of the pull cable being connected to the actuator, and the other end of the pull cable being fixedly connected to the wheel rod.

[0015] As a preferred embodiment of the ice-breaking device inside the door lock, the drive assembly further includes a hook, with one end of the pull cable not connected to the actuator being fixedly connected to the hook, which is hooked onto the wheel rod.

[0016] A door lock includes a latch and an ice-breaking device inside the lock as described in any of the above embodiments, wherein the ratchet rotates in a first direction to disengage from the latch and rotates in a second direction to engage with the latch, the first direction being opposite to the second direction.

[0017] As a preferred solution for a door lock, it also includes a pawl, which is pivotally connected to the lock housing. When the ratchet is engaged with the latch, the pawl can lock the ratchet in the latched position.

[0018] As a preferred embodiment of the door lock, it also includes a buffer element, which is fixedly disposed in the lock housing. When the ratchet rotates to its limit position in a first direction, it can abut against one end of the buffer element, and when the ratchet rotates to its limit position in a second direction, it can abut against the other end of the buffer element.

[0019] A vehicle including a door lock as described in any of the above embodiments.

[0020] Beneficial effects:

[0021] This utility model provides an ice-breaking device inside a door lock, a door lock, and a vehicle. The ice-breaking device is located inside the lock housing and includes a ratchet, a stop member, and an ice-breaking mechanism. The ratchet is pivotally connected to the lock housing. The stop member is disposed on the ratchet and its position is offset from the ratchet's axis. The ice-breaking mechanism includes a wheel rod and a drive assembly. The wheel rod is coaxially pivotally connected to the ratchet, and the drive assembly can drive the wheel rod to rotate in a first direction. Along the first direction, the stop member is located downstream of the wheel rod, and the wheel rod can push the stop member when rotating in the first direction. By placing the stop member on the ratchet, it is equivalent to the wheel rod directly driving the ratchet, without the need for power transmission through an intermediate cam, which has higher reliability and stability compared with the prior art. Both the door lock and the vehicle have the above-mentioned ice-breaking device built in, enabling the vehicle door to be opened normally in cold, icy environments. This utility model solves the problems of unstable door opening and closing triggering and easy damage to the cam caused by the existing technology of using an ice-breaking linkage to push a cam, which in turn drives the ratchet, in severe weather conditions such as ice and snow. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the door lock ice-breaking device in this embodiment of the present invention when the ratchet is in the unlocked position;

[0023] Figure 2 This is a schematic diagram of the structure of the ice-breaking device inside the door lock in this embodiment of the present invention when the ratchet is in the locked position;

[0024] Figure 3 This is an exploded view of the ice-breaking device inside the door lock in an embodiment of this utility model.

[0025] In the picture:

[0026] 100. Lock; 1. Lock housing; 2. Ratchet; 21. Abutment; 3. Ice-breaking mechanism; 31. Wheel rod; 32. Hook; 33. Pull line; 34. Actuator; 4. Reset component; 5. Pawl; 6. Buffer component; 7. Trigger signal cam; 71. Trigger unit. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] like Figures 1-3 As shown, this embodiment provides an ice-breaking device inside a door lock. This device is located inside the lock housing 1 of the door lock. The ice-breaking device includes a ratchet 2, an abutment 21, and an ice-breaking mechanism 3. The ratchet 2 is pivotally connected to the lock housing 1 and can rotate around its axis. The abutment 21 is disposed on the ratchet 2, but its position is offset from the axis of the ratchet 2. Therefore, when the abutment 21 is moved, it can drive the ratchet 2 to rotate. The ice-breaking mechanism 3 includes a wheel 31 and a drive assembly. The wheel 31 is coaxially pivotally connected to the ratchet 2. The drive assembly can drive the wheel 31 to rotate in a first direction. Along the first direction, the abutment 21 is located downstream of the wheel 31. When the wheel 31 rotates in the first direction, it can push the abutment 21 and the frozen ratchet 2 together to rotate in the first direction, thereby assisting in opening the door lock.

[0032] Preferably, the abutment 21 and the ratchet 2 are integrally formed, which is equivalent to the drive assembly driving the wheel 31 to directly drive the ratchet 2 to rotate, reducing the number of intermediate energy transfers, simplifying the structure, and enhancing the stability and reliability of the structure. In actual production, the abutment 21 and the ratchet 2 are manufactured using an integral molding process, reducing the connection points between parts and lowering the probability of failure.

[0033] Preferably, the abutment 21 has a columnar structure, and the wheel rod 31 has a groove. The abutment 21 can be positioned within the groove. When the wheel rod 31 rotates, the ratchet is pushed by the engagement of the groove and the abutment 21. This connection method is simple and reliable, and can accurately transmit power. At the same time, the groove reduces wear between the abutment 21 and the wheel rod 31.

[0034] Preferably, the ice-breaking device inside the door lock further includes a reset component 4, which is used to reset the wheel rod 31. The reset component 4 can be a torsion spring, a spring, etc. In this embodiment, the reset component 4 is a torsion spring. The torsion spring is sleeved on the rotating shaft of the ratchet 2. The two ends of the torsion spring are respectively connected to the ratchet 2 and the wheel rod 31. The torsion spring is used to reset the wheel rod 31. When the drive assembly stops driving the wheel rod 31, the torsion spring can make the wheel rod 31 return to the initial position, preparing for the next ice-breaking operation.

[0035] Preferably, the wheel lever 31 has two configurations in its initial position. One configuration is where the wheel lever 31 abuts against the abutment member 21. This allows for immediate pushing of the abutment member 21 and ratchet 2 upon activation of the drive assembly, resulting in a faster response time. However, this configuration requires higher manufacturing precision for individual components. The other configuration has a preset distance between the wheel lever 31 and the abutment member 21. The wheel lever 31 only contacts and pushes the abutment member 21 after rotating a certain angle. This preset distance reduces the dimensional accuracy requirements for components, improving production efficiency without affecting the ice-breaking function.

[0036] Preferably, the drive assembly includes a hook 32, a pull cable 33, and an actuator 34. The actuator 34 is fixedly mounted on the lock housing 1. One end of the pull cable 33 is connected to the actuator 34, and the other end of the pull cable 33 is fixedly connected to the hook 32. The hook 32 is hooked onto the wheel rod 31. When the actuator 34 is started, the pull cable 33 pulls the hook 32, thereby driving the wheel rod 31 to rotate. The actuator 34 can use a motor, electromagnet, or other power source, which can be selected according to actual needs. There are no restrictions here. In some scenarios where the response speed requirement is high, an electromagnet can be used as the power source of the actuator 34, which can quickly pull the pull cable 33 to realize the rotation of the wheel rod 31.

[0037] This embodiment also discloses a door lock, such as Figures 1-2As shown, the door lock includes a latch 100 and an ice-breaking device inside the door lock as described in any of the above embodiments. The ratchet 2 rotates in a first direction and disengages from the latch 100, and rotates in a second direction and engages with the latch 100. The first direction and the second direction are opposite.

[0038] Preferably, the door lock also includes a pawl 5, which is pivotally connected to the lock housing 1. When the ratchet 2 is engaged with the latch 100, the pawl 5 can lock the ratchet 2 in the engaged position to prevent the door lock from being opened accidentally and improve the security of the door lock.

[0039] Preferably, the door lock further includes a buffer member 6, which is fixedly disposed in the lock housing 1. When the ratchet 2 rotates to its limit position in a first direction, it can abut against one end of the buffer member 6, and when the ratchet 2 rotates to its limit position in a second direction, it can abut against the other end of the buffer member 6. The buffer member 6 is made of rubber, which can effectively buffer the impact force when the ratchet 2 rotates, reduce the wear of parts, and extend the service life of the door lock.

[0040] Preferably, the door lock further includes a trigger signal cam 7, which is coaxially pivotally connected to the ratchet 2 and can rotate synchronously with the rotation of the ratchet 2. The trigger signal cam 7 is provided with a trigger part 71, which is used to trigger a micro switch. The micro switch is electrically connected to the drive assembly. When the pawl 5 releases the ratchet 2, the trigger part 71 rotates with the ratchet 2 and triggers the micro switch, indicating that the ratchet 2 is rotating and the door lock is normally opened, and the drive assembly is not working. When the pawl 5 releases the ratchet 2 but the ratchet 2 does not rotate, that is, the trigger part 71 does not trigger the micro switch, indicating that the ratchet 2 is not rotating. It is determined that the door lock is blocked from opening due to freezing or other reasons. The micro switch releases an electrical signal to the drive assembly, and the actuator 34 in the drive assembly is activated. It pulls the wheel rod 31 through the pull cable 33, thereby driving the ratchet 2 to rotate and complete the ice-breaking and unlocking.

[0041] This embodiment also discloses a vehicle that includes the door lock described in any of the above solutions. Applying this door lock with an ice-breaking device to a vehicle can solve the problem of the door lock freezing and being unable to open or close properly in cold environments, thereby improving the convenience and safety of the vehicle.

[0042] As can be seen from the above embodiments, compared with the existing technology of "ice-breaking linkage pushing cam, which ultimately drives ratchet", the ice-breaking device inside the door lock proposed in this utility model improves the structure of the existing technology. By setting an abutment on the ratchet and making the abutment and ratchet integrated, the ice-breaking linkage can directly drive the ratchet, eliminating the intermediate link of the cam in the existing technology. This makes the structure of the ice-breaking device simpler, effectively improves the structural strength, and provides good ice-breaking effect. It has advantages such as high reliability and stability, and can effectively solve the problem of door locks failing to work properly due to icing. It has broad application prospects. In practical applications, the structure and parameters of the door lock can be adjusted and optimized according to different needs and scenarios to meet the needs of more users.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An ice-breaking device inside a door lock, located inside the lock case (1) of the door lock, characterized in that, include: Ratchet (2), which is pivotally connected to the lock housing (1); An abutment (21) is disposed on the ratchet (2) and its position is offset from the axis of the ratchet (2); The ice-breaking mechanism (3) includes a wheel (31) and a drive assembly. The wheel (31) is coaxially pivotally connected to the ratchet (2). The drive assembly can drive the wheel (31) to rotate in a first direction. Along the first direction, the abutment (21) is located downstream of the wheel (31). When the wheel (31) rotates in the first direction, it can push the abutment (21).

2. The door lock internal ice-breaking device according to claim 1, characterized in that, The abutment (21) is a columnar structure, and the wheel rod (31) is provided with a groove. When the wheel rod (31) pushes the abutment (21), the abutment (21) can be positioned in the groove.

3. The door lock internal ice-breaking device according to claim 1, characterized in that, It also includes a reset member (4) for resetting the wheel rod (31).

4. The door lock internal ice-breaking device according to claim 3, characterized in that, The reset component (4) is a torsion spring, which is sleeved on the shaft of the ratchet (2). The two ends of the torsion spring are respectively connected to the ratchet (2) and the wheel rod (31).

5. The door lock internal ice-breaking device according to any one of claims 1-4, characterized in that, The drive assembly includes a pull cable (33) and an actuator (34). The actuator (34) is fixedly mounted on the lock housing (1). One end of the pull cable (33) is connected to the actuator (34), and the other end of the pull cable (33) is fixedly connected to the wheel rod (31).

6. The door lock internal ice-breaking device according to claim 5, characterized in that, The drive assembly also includes a hook (32), one end of the pull line (33) not connected to the actuator (34) is fixedly connected to the hook (32), and the hook (32) is hooked to the wheel rod (31).

7. A door lock, characterized in that, Includes a latch (100) and an ice-breaking device inside the door lock as described in any one of claims 1-6, wherein the ratchet (2) rotates in a first direction to disengage from the latch (100) and rotates in a second direction to engage with the latch (100), wherein the first direction is opposite to the second direction.

8. The door lock according to claim 7, characterized in that, It also includes a pawl (5), which is pivotally connected to the lock housing (1). When the ratchet (2) is engaged with the lock (100), the pawl (5) can lock the ratchet (2) in the engaged position.

9. The door lock according to claim 7, characterized in that, It also includes a buffer (6), which is fixedly disposed in the lock housing (1). When the ratchet (2) rotates to the limit position in the first direction, it can abut against one end of the buffer (6). When the ratchet (2) rotates to the limit position in the second direction, it can abut against the other end of the buffer (6).

10. A vehicle, characterized in that, Including the door lock as described in any one of claims 7-9.

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