A dual-stay electrical latch mechanism

Abstract

The utility model relates to a kind of double pull wire electric suction lock mechanism, including shell, the accommodation space is formed in the shell, driving member and with the transmission assembly being connected with the driving member are installed on the shell, first rack, second rack and sector gear are equipped in the accommodation space, the sector gear is located between the first rack and second rack and is engaged with the first rack and second rack, the sector gear is connected with the transmission assembly, the first rack is connected with suction pull wire, the second rack is connected with release pull wire, driving member drives transmission assembly movement to drive sector gear clockwise or counterclockwise rotation, to drive the suction pull wire execution lock or release pull wire execution unlock.The utility model has the advantages of compact structure, transmission precision reliable, high integration and can reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a double-pull-cord electric suction lock mechanism. It can be applied to scenarios such as car trunk locks, tailgate locks, and side door locks. Background Technology

[0002] Automotive electric locks are key safety and comfort components in modern vehicles. Their performance directly affects the vehicle's safety and user experience. Traditional electric lock mechanisms, especially those with electric opening and closing functions, usually rely on a motor to drive a transmission mechanism to pull a cable, thereby controlling the opening (release) and closing (engagement) of the lock tongue.

[0003] In existing technologies, there are various forms of solutions for bidirectional (i.e., locking and unlocking) cable drive. A common approach is to use two independent drive motors to control the cable engagement and release respectively. Although this solution has simple control logic, it has inherent disadvantages such as a large number of parts, non-compact structure, large space occupation, and high manufacturing cost, which goes against the development trend of highly integrated and lightweight automotive parts. Utility Model Content

[0004] The purpose of this utility model is to provide a double-pull-wire electric suction lock mechanism that is compact in structure, has precise and reliable transmission, high integration, and can reduce costs.

[0005] A double-pull-cord electric suction lock mechanism includes a housing with an accommodating space inside. A driving component and a transmission assembly connected to the driving component are mounted on the housing. A first rack, a second rack, and a sector gear are provided within the accommodating space. The sector gear is positioned between and meshes with the first and second racks. The sector gear is connected to the transmission assembly. A pull-in cord is connected to the first rack, and a release cord is connected to the second rack. The driving component drives the transmission assembly to rotate, thereby causing the sector gear to rotate clockwise or counterclockwise, thus locking the pull-in cord or unlocking the cord.

[0006] In the above solution, by integrating the drive unit, transmission components, and meshing sector gears, first rack, and second rack into the same housing, the layout is reasonable and the structure is highly integrated, greatly saving installation space. It is especially suitable for scenarios with demanding space requirements, such as car doors. Using the sector gear as the reversing core, its single clockwise or counterclockwise rotational motion drives the first rack or second rack to perform linear motion, respectively. This structure forms a mechanical interlock mechanism, ensuring that when the locking action is performed, the unlocking release cable is in a non-working state, and vice versa, fundamentally avoiding misoperation and motion interference, resulting in extremely high operational reliability. Using a single drive unit and a single transmission system, both the cable engagement and release functions can be achieved. This design simplifies the system structure, reduces the need for multiple drive components, and effectively reduces manufacturing costs and the complexity of control logic.

[0007] Furthermore, the housing includes an upper shell and a bottom shell, the upper shell covers the bottom shell, the upper shell is provided with a mounting groove, the transmission assembly is embedded in the mounting groove, and the drive component is mounted on the upper shell.

[0008] In the above scheme, a modular unit that is easy to assemble and maintain is formed by adopting a split upper shell and lower shell structure. This design greatly facilitates the installation and positioning of the sector gear, the first rack, the second rack, the transmission components and the drive components, simplifies the production process, improves assembly efficiency, and is conducive to large-scale manufacturing. The mounting slots set on the upper shell provide space for the transmission components to be accommodated and positioned. This design ensures the coaxiality and relative position accuracy of the gear shafts of the transmission components, and avoids problems such as transmission jamming, abnormal noise or accelerated wear caused by cumulative assembly errors.

[0009] Furthermore, the first rack has several first protrusions on both sides, the second rack has several second protrusions on both sides, and the upper shell and the bottom shell have several sliding grooves, with the first and second protrusions movably embedded in the sliding grooves.

[0010] In the above design, the first and second protruding structures are movably embedded in the grooves of the upper and lower shells, providing precise linear guidance for the movement of the first and second racks. This design effectively prevents the first and second racks from swaying, warping, or jamming during reciprocating motion, ensuring the continuous stability and precision of the meshing relationship between the first and second racks and the sector gear, thereby guaranteeing the accurate positioning of the pull-in and release actions. During assembly, simply aligning the first protruding structures on both sides of the first rack and the second protruding structures on both sides of the second rack with the grooves inside the shell completes the positioning and installation, eliminating the need for additional fasteners or complex adjustment steps, greatly simplifying the assembly process. This design is particularly suitable for automated production lines, effectively improving production efficiency.

[0011] Furthermore, the transmission component is a planetary gear set.

[0012] In the above solution, the planetary gear set can achieve a high reduction ratio with its compact structure. This design allows the use of small, high-speed drive components. After the planetary gear set reduces speed and increases torque, it outputs a sufficiently large torque to reliably pull the pull cable and release the pull cable. This ensures that the electric lock can be stably locked and unlocked under various working conditions, such as icing and high resistance of the sealing strip. This achieves the effect of a small motor driving a large force, optimizes motor selection, and reduces system power consumption and cost.

[0013] Furthermore, the planetary gear set includes a drive gear, a first-stage gear set, a first-stage gear disk, a second-stage gear set, and a second-stage gear disk connected in sequence. The internal teeth of the sector gear mesh with the pinion of the second-stage gear disk, and the external teeth of the sector gear mesh with the first rack and the second rack.

[0014] In the above scheme, a highly efficient and compact two-stage reduction system is constructed through a series power path consisting of a drive gear, a first-stage gear set, a first-stage gear disk, a second-stage gear set, and a second-stage gear disk. This design can transform the high-speed, low-torque rotation of the drive component into the low-speed, high-torque output required by the sector gear step by step, providing extremely abundant power for the engagement and release actions. The internal teeth of the sector gear serve as the end of the transmission, meshing with the pinion of the second-stage gear disk and directly receiving power from the planetary gear set. Its external teeth serve as the starting point for the execution, driving the first and second racks to move.

[0015] Furthermore, a positioning sensor is provided on one side of the planetary gear set, and a groove is provided on the secondary gear disk.

[0016] In the above scheme, the groove is set on the secondary gear disk, and its angular position precisely corresponds to the limit working position of the release cable and the pull cable. When locking or unlocking is completed, the sensor state changes when the groove rotates to the position sensor, generating a clear position signal.

[0017] Furthermore, the driving component is connected to a worm gear, which meshes with the driving gear.

[0018] In the above scheme, the driving component drives the worm to rotate, which in turn drives the driving gear to rotate, thereby driving the planetary gear set, which is the transmission component, to move. The structure is simple and compact, so that a single driving component can realize two driving functions: attracting and releasing the cable.

[0019] This utility model discloses a double-pull-cord electric suction lock mechanism, which features a compact structure, precise and reliable transmission, high integration, and cost reduction. By integrating the driving component, transmission assembly, and intermeshing sector gear, first rack, and second rack into the same housing, the layout is reasonable and the structure is highly integrated, greatly saving installation space, especially suitable for scenarios with demanding space requirements, such as car doors. Using the sector gear as the reversing core, its single clockwise or counterclockwise rotational motion drives the first rack or second rack to perform linear motion, respectively. This structure forms a mechanical interlock mechanism, ensuring that when the locking action is performed, the unlocking release cable is in a non-working state, and vice versa, fundamentally avoiding misoperation and motion interference, resulting in extremely high operational reliability. Using a single driving component and a single transmission system, both the cable engaging and releasing functions can be achieved. This design simplifies the system structure, reduces the need for multiple driving components, and effectively reduces manufacturing costs and the complexity of control logic. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a double-pull-cord electric suction lock mechanism according to one embodiment.

[0021] Figure 2 This is a schematic diagram of the internal structure of the accommodating space according to one embodiment.

[0022] Figure 3 This is a schematic diagram of the shell structure of one embodiment.

[0023] Figure 4 This is a schematic diagram of the upper shell structure of one embodiment.

[0024] Figure 5 This is a schematic diagram of a transmission component structure according to one embodiment.

[0025] Explanation of reference numerals: 1. Housing; 11. Upper housing; 111. Mounting groove; 112. Slide groove; 12. Bottom housing; 2. Drive component; 3. Transmission assembly; 31. Drive gear; 32. First-stage gear set; 33. First-stage gear disk; 34. Second-stage gear set; 35. Second-stage gear disk; 351. Pinion; 352. Groove; 4. First rack; 41. First protruding structure; 5. Second rack; 51. Second protruding structure; 6. Sector gear; 7. Pull-in cable; 8. Release cable; 9. Position sensor; 10. Worm gear. Detailed Implementation

[0026] The following will describe in further detail a double-pull-cord electric suction lock mechanism of the present invention with reference to specific embodiments and accompanying drawings.

[0027] like Figure 1 and Figure 2As shown in a preferred embodiment, the present invention provides a double-pull-cord electric suction lock mechanism, including a housing 1, with an accommodating space formed inside the housing 1. A driving component 2 and a transmission assembly 3 connected to the driving component 2 are installed on the housing 1. A first rack 4, a second rack 5, and a sector gear 6 are provided in the accommodating space. The sector gear 6 is located between the first rack 4 and the second rack 5 and meshes with the first rack 4 and the second rack 5. The sector gear 6 is connected to the transmission assembly 3. The first rack 4 is connected to a suction cable 7, and the second rack 5 is connected to a release cable 8. The driving component 2 drives the transmission assembly 3 to move, thereby causing the sector gear 6 to rotate clockwise or counterclockwise, so as to drive the suction cable 7 to lock or the release cable 8 to unlock.

[0028] By integrating the drive component 2, transmission assembly 3, and the meshing sector gear 6, first rack 4, and second rack 5 into the same housing 1, the layout is reasonable and the structure is highly integrated, greatly saving installation space, especially suitable for scenarios with demanding space requirements such as car tailgates; using the sector gear 6 as the reversing core, its single clockwise or counterclockwise rotational motion drives the first rack 4 or the second rack 5 to perform linear motion respectively. This structure forms a mechanical interlock mechanism, ensuring that when the locking action is performed, the unlocking release cable 8 is in a non-working state, and vice versa, fundamentally avoiding misoperation and motion interference, and ensuring extremely high operational reliability; using a single drive component 2 and a transmission system, where the drive component 2 is a motor, both the engaging cable 7 and the releasing cable 8 can be driven. This design simplifies the system structure, reduces the need for multiple drive components, and effectively reduces manufacturing costs and the complexity of control logic.

[0029] like Figures 1 to 3 As shown, in some embodiments, the housing 1 includes an upper housing 11 and a bottom housing 12. The upper housing 11 covers the bottom housing 12, and the upper housing 11 is provided with a mounting groove 111. The transmission assembly 3 is embedded in the mounting groove 111, and the drive component 2 is mounted on the upper housing 11. By adopting a split structure of the upper housing 11 and the bottom housing 12, a modular unit that is easy to assemble and maintain is formed. This design greatly facilitates the installation and positioning of the sector gear 6, the first rack 4, the second rack 5, the transmission assembly 3, and the drive component 2, simplifies the production process, improves assembly efficiency, and is conducive to large-scale manufacturing. The mounting groove 111 provided on the upper housing 11 provides space for the transmission assembly 3 to be accommodated and positioned. This design ensures the coaxiality and relative position accuracy of the gear shafts of the transmission assembly 3, and avoids problems such as transmission jamming, abnormal noise, or accelerated wear caused by accumulated assembly errors.

[0030] like Figure 2 , Figure 4 and Figure 5As shown, in some embodiments, the first rack 4 has a plurality of first protrusions 41 on both sides, the second rack 5 has a plurality of second protrusions 51 on both sides, and the upper shell 11 and the bottom shell 12 have a plurality of sliding grooves 112, in which the first protrusions 41 and the second protrusions 51 are movably embedded. The first protrusion structure 41 and the second protrusion structure 51 are movably embedded in the sliding grooves 112 of the upper shell 11 and the bottom shell 12, providing precise linear guidance for the movement of the first rack 4 and the second rack 5. This design effectively prevents the first rack 4 and the second rack 5 from swaying, warping or jamming during reciprocating motion, ensuring the continuous stability and precision of the meshing relationship between the first rack 4 and the second rack 5 and the sector gear 6, thereby ensuring the accurate positioning of the pull-in cable 7 and the release cable 8. During assembly, simply align the first protrusion structure 41 on both sides of the first rack 4 and the second protrusion structure 51 on both sides of the second rack 5 with the sliding grooves 112 in the shell 1 to complete the positioning and installation, eliminating the need for additional fasteners or complex adjustment steps, greatly simplifying the assembly process, and is particularly suitable for automated production lines, effectively improving production efficiency.

[0031] like Figure 5 As shown, in some embodiments, the transmission component 3 is a planetary gear set. The planetary gear set, with its compact structure, enables a high reduction ratio. This design allows for the use of a small, high-speed drive component 2. After reduction and torque amplification through the planetary gear set, it outputs a sufficiently large torque to reliably pull the engagement cable 7 and the release cable 8, ensuring stable locking and unlocking of the electric lock under various working conditions, such as icing or high resistance from the sealing strip. This achieves the effect of a small motor driving a large force, optimizes motor selection, and reduces system power consumption and cost.

[0032] like Figure 5 As shown, in some embodiments, the planetary gear set includes a drive gear 31, a first-stage gear set 32, a first-stage gear disk 33, a second-stage gear set 34, and a second-stage gear disk 35 connected in sequence. The internal teeth of the sector gear 6 mesh with the pinion 351 of the second-stage gear disk 35, and the external teeth of the sector gear 6 mesh with the first rack 4 and the second rack 5. Through the series power path of the drive gear 31, the first-stage gear set 32, the first-stage gear disk 33, the second-stage gear set 34, and the second-stage gear disk 35, a highly efficient and compact two-stage reduction system is constructed. This design can convert the high-speed, low-torque rotation of the drive component 2 into the low-speed, high-torque output required by the sector gear 6, providing extremely abundant power for the engagement and release actions of the pull cable 7. The internal teeth of the sector gear 6, as the end of the transmission, mesh with the pinion 351 of the second-stage gear disk 35, directly receiving power from the planetary gear set, while its external teeth, as the starting point of the execution, are used to drive the first rack 4 and the second rack 5 to move.

[0033] like Figure 2As shown, in some embodiments, a position sensor 9 is provided on one side of the planetary gear set, and a groove 352 is provided on the secondary gear disk 35. The groove 352 is provided on the secondary gear disk 35, and its angular position precisely corresponds to the limit working position of the release cable 8 and the pull cable 7. When locking or unlocking is completed, when the groove 352 rotates to the position sensor 9, the sensor state changes and generates a clear position signal.

[0034] like Figure 5 As shown, in some embodiments, the drive component 2 is connected to a worm gear 10, which meshes with the drive gear 31. The drive component 2 drives the worm gear 10 to rotate, which in turn drives the drive gear 31 to rotate, thereby driving the planetary gear set, i.e., the transmission component 3, to move. The structure is simple and compact, so that a single drive component 2 can achieve two driving functions: engaging the pull cable 7 and releasing the pull cable 8.

[0035] The working principle and process of this utility model of a double-pull-cord electric suction lock mechanism are as follows: When the vehicle receives a "close door" or "lock" command, the electronic control unit sends a command to the drive component 2. The drive component 2 starts to rotate in the preset "lock" direction. The output torque of the drive component 2 is transmitted through the transmission component 3. The final output power of the transmission component 3 is transmitted to the sector gear 6, driving it to rotate clockwise. The teeth of the clockwise rotating sector gear 6 mesh with the first rack 4, pushing the first rack 4 to make linear motion. The linear motion of the first rack 4 directly pulls the suction cable 7, which is firmly connected to it. The second rack 5, due to its reverse meshing relationship with the sector gear 6, remains stationary or slightly returns to its original position in the opposite direction during this process, and the release cable 8 is in a relaxed non-working state. When the vehicle receives a "open door" or "unlock" command, the mechanism executes in reverse.

[0036] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 according to the specific circumstances.

[0039] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A double-pull-cord electric suction lock mechanism, comprising a housing, wherein an accommodating space is formed within the housing, characterized in that, The housing is equipped with a drive unit and a transmission assembly connected to the drive unit. The accommodating space is provided with a first rack, a second rack, and a sector gear. The sector gear is located between the first rack and the second rack and meshes with the first rack and the second rack. The sector gear is connected to the transmission assembly. The first rack is connected to a pull cable, and the second rack is connected to a release cable. The drive unit drives the transmission assembly to move, thereby causing the sector gear to rotate clockwise or counterclockwise, so as to drive the pull cable to lock or the release cable to unlock.

2. The double-pull-cord electric suction lock mechanism according to claim 1, characterized in that, The housing includes an upper shell and a bottom shell. The upper shell covers the bottom shell and has a mounting groove. The transmission component is embedded in the mounting groove, and the drive component is mounted on the upper shell.

3. The double-pull-cord electric suction lock mechanism according to claim 2, characterized in that, The first rack has several first protrusions on both sides, the second rack has several second protrusions on both sides, and the upper shell and the bottom shell have several sliding grooves. The first and second protrusions are movably embedded in the sliding grooves.

4. The double-pull-cord electric suction lock mechanism according to claim 1, characterized in that, The transmission component is a planetary gear set.

5. The double-pull-cord electric suction lock mechanism according to claim 4, characterized in that, The planetary gear set includes a drive gear, a first-stage gear set, a first-stage gear disk, a second-stage gear set, and a second-stage gear disk connected in sequence, and the sector gear meshes with the pinion of the second-stage gear disk.

6. The double-pull-cord electric suction lock mechanism according to claim 5, characterized in that, A positioning sensor is provided on one side of the planetary gear set, and a groove is provided on the secondary gear disk.

7. The double-pull-cord electric suction lock mechanism according to claim 5, characterized in that, The driving component is connected to a worm gear, which meshes with the driving gear.

Images