Novel fastener with high transmission efficiency, compact structure and low power consumption

Abstract

The novel fastener is high in transmission efficiency, compact in structure and low in power consumption and comprises a shell and a shell cover, a worm wheel shaft, a fastener output rocker arm shaft and a motor are arranged in the shell, a worm wheel and a driven gear are arranged on the worm wheel shaft, and the worm wheel and the driven gear are arranged on the fastener output rocker arm shaft. A fastener output rocker arm and a swing arm are arranged on the fastener output rocker arm shaft, a worm is assembled on the motor, a shaft sleeve is arranged on the worm, and the worm is matched with the worm wheel. The locking device has the advantages that parts of the locking device are optimized, the worm gear, the driven gear and the swing arm are removed, a worm gear reset spring is removed, the structure is compact, the transmission efficiency is effectively improved, the action process is stable, and the tolerance of the stroke is large.

Description

Technical Field

[0001] The utility model relates to a locking device, in particular to a novel locking device with high transmission efficiency, compact structure and low power consumption. Background Art

[0002] At present, a locking device is composed of a housing, a motor, a worm, a worm wheel, a worm wheel reset spring, a driven gear, a swing arm, an output rocker arm shaft, a worm wheel shaft, etc.; the vehicle-mounted controller BCM energizes the locking device motor, the rotation of the motor drives the worm to rotate, the worm drives the worm wheel to rotate, and at the same time, it is necessary to overcome the worm wheel reset spring force, the spur gear on the worm wheel drives the driven gear to rotate, the rotation of the driven gear drives the swing arm to rotate, the swing arm drives the output rocker arm shaft to rotate, and the locking device rocker arm connected to the output rocker arm shaft rotates accordingly, thereby realizing the central control locking / unlocking action.

[0003] The locker of this structure has a worm gear return spring in it, and the force of the worm gear return spring needs to be overcome when working to reduce the output force of the locker. Due to the large number of parts and the overly complicated transmission relationship, the transmission efficiency is low. At low temperatures of -40°C, the viscosity of the grease is high, and its damping force increases. At the same time, the output power of the motor decreases under low voltage conditions, causing the central control locking / unlocking function to fail, reducing customer satisfaction.

[0004] Another type of locking device is composed of a housing, a motor, a worm, a worm wheel, a driven gear, a swing arm, an output rocker arm shaft, a worm wheel shaft, etc.; the on-board controller BCM energizes the locking device motor, the motor rotation drives the worm to rotate, the worm drives the worm wheel to rotate, and the driven gear is located on the worm wheel and rotates around the worm wheel shaft, so the driven gear rotates around the axis of the worm wheel shaft as the worm wheel rotates, and the boss / toothed boss on the driven gear enters the U-shaped groove in the swing arm, driving the swing arm to rotate around the output rocker arm shaft, and the locking device rocker arm connected to the output rocker arm shaft rotates accordingly, thereby realizing the central control locking / unlocking action.

[0005] Although there is no spring return damping in the locker of this structure, there is a clutch phenomenon when the driven gear moves the swing arm. During the clutch process, the boss on the driven gear moves the position point in the slot of the swing arm to change, resulting in a sharp change in transmission efficiency, resulting in low efficiency of the output rocker arm shaft transmitting the force of the locker rocker arm. At the same time, when the initial position of the swing arm is in the middle of the stroke, the boss on the rotating driven gear will contact the arc surface of the swing arm and cannot enter the slot of the swing arm from the extreme position at one end, causing the swing arm to be unable to rotate with the rotation of the driven gear, resulting in the failure of the central control locking / unlocking function, reducing customer satisfaction. Utility Model Content

[0006] The embodiment of the present application provides a new type of locking device with high transmission efficiency, compact structure and low power consumption, optimizes the parts of the locking device, including the worm gear, driven gear and swing arm, and removes the worm gear return spring. The structure is compact, the transmission efficiency is effectively improved, the movement process is smooth, and the travel tolerance is large.

[0007] The embodiment of the present application provides a new type of locking device with high transmission efficiency, compact structure and low power consumption, including a shell and a shell cover, wherein a worm gear shaft, a locking device output rocker arm shaft and a motor are arranged in the shell, a worm gear and a driven gear are arranged on the worm gear shaft, a locking device output rocker arm and a swing arm are arranged on the locking device output rocker arm shaft, a worm is assembled on the motor, a shaft sleeve is arranged on the worm, and the worm cooperates with the worm gear.

[0008] One end of the locker output rocker arm is provided with an assembly groove, and the other end of the locker output rocker arm is provided with a nylon joint. The assembly groove is rectangular and cooperates with the protrusion at the tail of the locker output rocker arm shaft. The locker output rocker arm is fixed on the locker output rocker arm by a cross-slotted washer self-tapping screw.

[0009] The shell is provided with a switch fixing seat, which is fixed by hot riveting with an electric soldering iron. The motor is plugged with a motor pin on the wiring harness sub-assembly, and one end of the motor pin on the wiring harness sub-assembly is clamped in the shell.

[0010] The worm wheel is arranged on a side close to the housing, the driven gear is arranged on the worm wheel, a limiting groove is arranged in the worm wheel, the limiting groove is arc-shaped as a whole, a limiting block matching the limiting groove is arranged at the bottom of the driven gear, and the limiting block is embedded in the limiting groove.

[0011] A sealing ring is arranged between the locker output rocker arm shaft and the housing, the locker output rocker arm rotates in conjunction with the locker output rocker arm shaft, the locker output rocker arm shaft is provided with flower teeth, a groove meshing with the flower teeth is arranged in the swing arm, the swing arm cooperates with the flower teeth, the swing arm is fan-shaped as a whole, and the outer ring of the swing arm meshes with the driven gear.

[0012] The motor and the worm are connected via a key, the motor drives the worm to rotate, the worm is meshed with the worm wheel, and the worm drives the worm wheel to rotate.

[0013] The shell body and the shell cover are locked by bolts, and the shell body and the shell cover are connected and fixed by ultrasonic welding.

[0014] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0015] Compared with the traditional interlock, the interlock is optimized in parts, such as worm wheel, driven gear, swing arm, and the worm wheel reset spring is removed. The driven gear is arranged on the worm wheel, and the limit groove in the turbine and the protrusion on the driven gear cooperate to limit and fix, which can just drive the driven gear to rotate around the worm wheel shaft. Through the meshing of the driven gear and the gear on the swing arm, the swing arm is driven to rotate around the output rocker arm shaft of the interlock, and the output rocker arm shaft of the interlock rotates accordingly to drive the output rocker arm of the interlock to rotate, thereby realizing the unlocking / locking action of the interlock to meet the needs of customers. The structure is compact, the transmission efficiency is effectively improved, the action process is smooth, and the tolerance of the stroke is large. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded view of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the worm gear in the utility model;

[0019] Figure 4 for Figure 3 Sectional view at A in the middle;

[0020] Figure 5 It is a schematic diagram of the swing arm and the driven gear in the utility model. DETAILED DESCRIPTION

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] A novel locking device with high transmission efficiency, compact structure and low power consumption comprises a shell 11 and a shell cover 1. A worm gear shaft 3, a locking device output rocker arm shaft 7 and a motor 15 are arranged in the shell 11. A worm gear shaft 3 is arranged on a worm gear 12 and a driven gear 13. The locking device output rocker arm shaft 7 is arranged on a locking device output rocker arm 8 and a swing arm 2. A worm 14 is assembled on the motor 15. A shaft sleeve 4 is arranged on the worm 14. The worm 14 cooperates with the worm gear 12.

[0023] One end of the latch output rocker arm 8 is provided with a mounting groove, and the other end of the latch output rocker arm 8 is provided with a nylon joint 9. The mounting groove is rectangular and matches with the protrusion at the tail of the latch output rocker arm shaft 7. The latch output rocker arm 8 is fixed on the latch output rocker arm 8 by a cross groove washer self-tapping screw 10;

[0024] The output rocker arm 8 of the closer is limited by the cooperation of the assembly groove and the protrusion, and then fixed by the cross-slotted self-tapping screw 10 with a washer to ensure its fixing effect so that when the output rocker arm shaft 7 of the closer rotates, the output rocker arm 8 of the closer can rotate with it.

[0025] The shell 11 is provided with a switch fixing seat 5, which is fixed by hot riveting with an electric soldering iron. The motor 15 is plugged with a motor pin 16 on the wiring harness sub-assembly, and one end of the motor pin 16 on the wiring harness sub-assembly is clamped in the shell 11.

[0026] The worm wheel 12 is arranged on a side close to the housing 11, and the driven gear 13 is arranged on the worm wheel 12. A limiting groove is arranged in the worm wheel 12, and the limiting groove is arc-shaped as a whole. A limiting block matching the limiting groove is arranged at the bottom of the driven gear 13, and the limiting block is embedded in the limiting groove; the driven gear 13 can effectively rotate by following the rotation of the worm wheel 12 through the cooperation of the limiting groove and the limiting block.

[0027] A sealing ring 6 is arranged between the locking device output rocker arm shaft 7 and the housing 11, the locking device output rocker arm 8 rotates in conjunction with the locking device output rocker arm shaft 7, the locking device output rocker arm shaft 7 is provided with flower teeth, and a groove meshing with the flower teeth is arranged in the swing arm 2. The swing arm 2 cooperates with the flower teeth, and the swing arm 2 is fan-shaped as a whole, and the outer ring of the swing arm 2 meshes with the driven gear 13.

[0028] The motor 15 is connected to the worm 14 via a key, the motor 15 drives the worm 14 to rotate, the worm 14 is meshed with the worm wheel 12, and the worm 14 drives the worm wheel 12 to rotate.

[0029] The shell 11 and the shell cover 1 are locked by bolts, and the shell 11 and the shell cover 1 are connected and fixed by ultrasonic welding, so that the outer rings of the shell 11 and the shell cover 1 are tightly connected.

[0030] The parts of the locker will be optimized, including the worm wheel 12, the driven gear 13, and the swing arm 2, and the return spring of the worm wheel 12 will be removed. The driven gear will be arranged on the worm wheel 12, and the limit groove in the worm wheel and the protrusion on the driven gear 13 will cooperate to limit and fix, which can just drive the driven gear 13 to rotate around the worm wheel shaft 3. Through the meshing of the driven gear 13 and the gear on the swing arm 2, the swing arm 2 is driven to rotate around the output rocker arm shaft 7 of the locker, and the output rocker arm shaft 7 of the locker rotates accordingly to drive the output rocker arm 8 of the locker to rotate, thereby realizing the unlocking / locking action of the locker to meet the needs of customers. Compared with the traditional locker, the utility model has a compact structure, effectively improves the efficiency of the transmission, and the action process is smooth, and the tolerance of the stroke is large.

[0031] Since the reset spring on the worm gear 12 is cancelled, there is no need to overcome its reset force during operation, thereby ensuring the output force of the locking device; compared with the traditional locking device, the number of parts is significantly reduced, the transmission relationship is simple and clear, and the force transmission efficiency is improved. It can ensure its normal operation at a low temperature of -40°C, and even when the output power of the motor 15 decreases under low voltage conditions, it can still meet the actual needs of the locking device and reduce customer satisfaction.

[0032] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0033] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A novel locking device with high transmission efficiency, compact structure and low power consumption, comprising a housing and a housing cover, wherein a worm gear shaft, a locking device output rocker arm shaft and a motor are arranged in the housing, a worm gear and a driven gear are arranged on the worm gear shaft, a locking device output rocker arm and a swing arm are arranged on the locking device output rocker arm shaft, a worm is mounted on the motor, a shaft sleeve is arranged on the worm, and the worm matches the worm gear; The worm wheel is arranged on a side close to the housing, the driven gear is arranged on the worm wheel, a limiting groove is arranged in the worm wheel, the limiting groove is in an arc shape as a whole, a limiting block matching with the limiting groove is arranged at the bottom of the driven gear, and the limiting block is embedded in the limiting groove; A sealing ring is arranged between the output rocker arm shaft of the locker and the housing, the output rocker arm of the locker rotates in conjunction with the output rocker arm shaft of the locker, the output rocker arm shaft of the locker is provided with a flower tooth, a groove meshing with the flower tooth is arranged in the swing arm, the swing arm matches with the flower tooth, the swing arm is fan-shaped as a whole, and the outer ring of the swing arm meshes with the driven gear; The motor and the worm are connected via a key, the motor drives the worm to rotate, the worm is meshed with the worm wheel, and the worm drives the worm wheel to rotate.

2. A novel locking device with high transmission efficiency, compact structure and low power consumption as claimed in claim 1, characterized in that: One end of the locker output rocker arm is provided with an assembly groove, and the other end of the locker output rocker arm is provided with a nylon joint. The assembly groove is rectangular and cooperates with the protrusion at the tail of the locker output rocker arm shaft. The locker output rocker arm is fixed to the locker output rocker arm by a cross-slotted washer self-tapping screw.

3. A novel locking device with high transmission efficiency, compact structure and low power consumption as claimed in claim 1, characterized in that: The shell is provided with a switch fixing seat, which is fixed by hot riveting with an electric soldering iron. The motor is plugged with a motor pin on the wiring harness sub-assembly, and one end of the motor pin on the wiring harness sub-assembly is clamped in the shell.

4. A novel locking device with high transmission efficiency, compact structure and low power consumption as claimed in claim 1, characterized in that: The shell body and the shell cover are locked by bolts, and the shell body and the shell cover are connected and fixed by ultrasonic welding.

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