A new electronic lock

Abstract

This utility model discloses a novel electronic lock, including a housing, a top cover, and a latch. The latch is connected to and nested in the housing via a latch transmission block. The housing is equipped with a motor, a gear set, and a lever. The motor drives a worm gear, which in turn transmits power to the lever via the gear set, thereby driving the latch to extend and retract, achieving locking and unlocking. The gear set includes a buffer gear assembly and a secondary transmission gear. The buffer gear assembly includes an outer gear and a buffer gear. The buffer gear has an elastic pawl damping wheel and a gear output. The elastic pawl damping wheel is nested and connected to the inner side of the outer gear via friction transmission. The overall design mainly utilizes the friction transmission between the elastic pawl damping wheel and the outer gear to set the overload protection torque. The structure is compact, uses fewer parts, reduces the failure rate, extends the service life, and the overload protection structure is low-cost and easy to install and replace.

Description

Technical Field

[0001] This utility model relates to the field of electronic lock technology, specifically a novel electronic lock. Background Technology

[0002] Electronic locks use a motor to transmit power to a drive mechanism, which in turn actuates the bolt assembly to lock and unlock. However, current unlocking methods only work when the electronic lock is in a stable or normal state. If the motor rotates excessively without any structural protection, it may stall, causing overheating and creating a safety hazard. While some electronic locks employ electronic protection structures, their flexibility is poor, their cost is high, and the user experience is subpar.

[0003] Therefore, how to provide a new type of electronic lock that is easy to install, remove, replace, and is low in cost has become a technical problem to be solved. Utility Model Content

[0004] The purpose of this invention is to provide a new type of electronic lock that is easy to install, remove, and replace, and has low cost, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A novel electronic lock includes a housing, a top cover, and a latch. The latch is connected to and nested within the housing via a latch transmission block. The housing houses a motor, a gear set, and a lever. A worm gear is connected to the motor's output shaft, meshing with the input end of the gear set. The input end of the lever meshes with the output end of the gear set, and the output end of the lever actuates the latch transmission block, thereby driving the latch to extend and retract. The gear set includes a buffer gear assembly and a secondary transmission gear. The buffer gear assembly includes an outer gear and a buffer gear. The buffer gear has an elastic ratchet damping wheel and a gear output. The elastic ratchet damping wheel is nested and frictionally connected inside the outer gear. The gear output meshes with the input end of the secondary transmission gear, and the output end of the secondary transmission gear meshes with the output end of the lever.

[0007] Preferably, the elastic ratchet damping wheel of the buffer gear is fitted onto the inner wall of the outer gear by a plurality of elastic ratchet protrusions around its periphery to dampen friction, thereby causing the outer gear to rotate and thus frictionally driving the buffer gear to rotate as a whole.

[0008] Preferably, the box body is provided with a latch guide groove, the latch transmission block is nested in the latch guide groove, the middle part of the latch transmission block is provided with a support rod, a return spring is nested on the support rod, the middle part of the latch guide groove is provided with a positioning step, and the bottom end of the return spring on the support rod is engaged with the positioning step.

[0009] Preferably, the box body is also provided with a positioning cover plate, which is fastened to the box body. The positioning cover plate is used to assist in positioning and covering the motor, gear set, actuating rod and locking tongue transmission block.

[0010] Preferably, the side of the locking tongue transmission block is provided with a transmission boss, and the output end of the outer wall of the actuating rod is matched and connected with the transmission boss for transmission.

[0011] Preferably, the housing is provided with several positioning posts, which are used to position and install the buffer gear assembly, the secondary transmission gear and the actuating rod.

[0012] Preferably, the power input terminal of the motor is connected to the battery via a plug-in power supply PCB board.

[0013] Preferably, the elastic ratchet damping wheel is made of nylon, rubber, or POM material.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model employs a buffer gear assembly comprising an outer gear and a buffer gear. The buffer gear has an elastic pawl damping wheel and a gear output section. The elastic pawl damping wheel is nested within the outer gear via friction transmission. It primarily drives a worm gear via a motor, which in turn transmits power to the lever through gear meshing, thereby driving the latch's extension and retraction to achieve locking and unlocking. The overall design utilizes the friction transmission between the elastic pawl damping wheel and the outer gear, and sets an overload protection torque. When a reverse external force presses against the latch or the latch transmission block jams, the motor will overcome the transmittable friction between the outer gear and the elastic pawl damping wheel, causing the outer gear to idle around the elastic pawl damping wheel without further transmitting power to the lever. This serves as an overload protection structure to protect the motor and prevent damage from overload. In addition, when the latch encounters resistance during its extension, the outer gear and the elastic ratchet damping wheel rotate freely, allowing the latch transmission block to keep the latch unaffected by the motor's driving force, enabling it to remain in place or retract, thus protecting the latch. This protects both the gear set and the motor from the impact of resistance, and automatically resets after the external force is removed. The structure is compact, uses fewer parts, reduces the failure rate, extends service life, and the overload protection structure is low-cost and easy to install, remove, and replace. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the top cover of this utility model after it is opened;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the box structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the transmission mechanism of this utility model;

[0020] Figure 5 This is an exploded view of the connection structure of the gear set and the actuating lever of this utility model;

[0021] Figure 6 This is an exploded view of the buffer gear assembly of this utility model;

[0022] Figure 7 This is a schematic diagram of the bottom of the buffer gear assembly of this utility model after installation.

[0023] In the diagram: 1. Box body; 2. Top cover; 3. Locking tongue; 4. Positioning cover plate; 5. Motor; 6. Buffer gear assembly; 7. Secondary transmission gear; 8. Actuating rod; 9. Battery; 11. Locking tongue guide groove; 12. Positioning step; 13. Positioning post; 14. Battery placement slot; 31. Locking tongue transmission block; 32. Support rod; 33. Return spring; 34. Transmission boss; 51. Worm gear; 52. Plug-in power supply PCB board; 61. Outer gear; 62. Buffer gear; 621. Elastic ratchet damping wheel; 622. Gear output section. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-7 This utility model provides a technical solution:

[0026] like Figure 1 As shown, a novel electronic lock includes a housing 1, a top cover 2, and a locking tongue 3.

[0027] like Figure 2 , Figure 3As shown, the locking tongue 3 is connected to and nested on the housing 1 via the locking tongue transmission block 31. The housing 1 is equipped with a motor 5, a gear set and a lever 8. A worm gear 51 is connected to the output shaft of the motor 5. The worm gear 51 meshes with the input end of the gear set for transmission. The housing 1 is also provided with a positioning cover plate 4, which is fastened to the housing 1. The positioning cover plate 4 is mainly used to assist in positioning and covering the motor 5, gear set, lever 8 and locking tongue transmission block 31.

[0028] like Figures 4 to 7 As shown, the gear set includes a buffer gear assembly 6 and a secondary transmission gear 7. The buffer gear assembly 6 includes an outer gear 61 and a buffer gear 62. The buffer gear 62 has an elastic pawl damping wheel portion 621 and a gear output portion 622. The elastic pawl damping wheel portion 621 is nested and frictionally connected inside the outer gear 61. The gear output portion 622 meshes with the input end of the secondary transmission gear 7, and the output end of the secondary transmission gear 7 meshes with the output end of the actuating lever 8. The actuating lever 8 actuates the locking tongue transmission block 31, thereby driving the locking tongue 3 to extend and retract.

[0029] The elastic ratchet damping wheel 621 of the buffer gear 62 is fitted against the inner wall of the outer gear 61 by several elastic ratchet protrusions around its periphery, which dampens and frictionally abuts against the inner wall of the outer gear 61. This causes the outer gear 61 to rotate, thereby frictionally driving the buffer gear 62 to rotate as a whole. The elastic ratchet damping wheel 621 is made of nylon, rubber, or POM material, which has high wear resistance and a long service life.

[0030] like Figure 3 , Figure 4 As shown, the box body 1 is provided with a latch guide groove 11, and the latch transmission block 31 is nested in the latch guide groove 11. A support rod 32 is provided in the middle of the latch transmission block 31, and a return spring 33 is nested on the support rod 32. A positioning step 12 is provided in the middle of the latch guide groove 11, and the bottom end of the return spring 33 on the support rod 32 is engaged with the positioning step 12. The latch transmission block 31 is connected to the positioning step 12 via the support rod 32 and the return spring 33, enabling the latch transmission block 31 to slide elastically within the latch guide groove 11. The power input terminal of the motor 5 is connected to the battery 9 via a plug-in power supply PCB board 52.

[0031] The side of the locking tongue transmission block 31 is provided with a transmission boss 34, and the output end of the actuating rod (8) is matched and connected with the transmission boss 34 for transmission. The housing 1 is provided with three positioning posts 13, which are used to position and install the buffer gear assembly 6, the secondary transmission gear 7 and the actuating rod 8.

[0032] In practical use, the worm gear 51 at the output end of the motor 5 first drives the outer gear 61 to rotate, and the buffer gear 62 rotates through the friction transmission of the elastic ratchet damping wheel part 621. The buffer gear 62 then meshes with the gear output part 622 and drives the secondary transmission gear 7 to rotate, thereby driving the actuating rod 8 to rotate. This drives the transmission to the transmission boss 34 of the lock tongue transmission block 31, which in turn actuates the lock tongue transmission block 34, thereby driving the lock tongue 3 to extend and retract. The locking and unlocking are achieved by the return spring 33.

[0033] The entire system is driven by motor 5, which drives worm gear 51, which in turn transmits power to lever 8 via gear set, thereby driving the extension and retraction of the latch to achieve locking and unlocking. It primarily utilizes the friction transmission between the elastic pawl damping wheel 621 and the outer gear 61, and sets an overload protection torque. When a reverse external force presses against the latch 3 or the latch transmission block 31 becomes jammed, motor 5 will overcome the transmittable friction between the outer gear 61 and the elastic pawl damping wheel 621, causing the outer gear 61 to idle around the elastic pawl damping wheel 621 without further transmitting power to lever 8. This serves as an overload protection structure to protect motor 5 and prevent damage from overload. Furthermore, when the latch 3 encounters resistance during its extension, the outer gear 61 and the elastic ratchet damping wheel 621 rotate freely, allowing the latch transmission block 31 to keep the latch unaffected by the driving force of the motor 5, enabling it to remain in its original position or retract, thus protecting the latch 3. This protects both the gear set and the motor 5 from the impact of resistance, and automatically resets after the external force is removed. The structure is compact, uses fewer parts, reduces the failure rate, extends service life, and the overload protection structure is low-cost and easy to install and replace.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel electronic lock, comprising a housing (1), a top cover (2), and a bolt (3), characterized in that: The latch (3) is connected to and nested in the housing (1) via a latch transmission block (31). The housing (1) is equipped with a motor (5), a gear set, and a lever (8). A worm gear (51) is connected to the output shaft of the motor (5). The worm gear (51) meshes with the input end of the gear set. The input end of the lever (8) meshes with the output end of the gear set. The output end of the lever (8) actuates the latch transmission block (31), thereby driving the latch (3) to extend and retract. The gear set includes a buffer gear assembly (…). 6) and secondary transmission gear (7), the buffer gear assembly (6) includes an outer gear (61) and a buffer gear (62), the buffer gear (62) is provided with an elastic pawl damping wheel part (621) and a gear output part (622), the elastic pawl damping wheel part (621) is nested and connected to the inside of the outer gear (61) for friction transmission, the gear output part (622) is meshed with the input end of the secondary transmission gear (7) for transmission, and the output end of the secondary transmission gear (7) is meshed with the output end of the lever (8) for transmission.

2. The novel electronic lock according to claim 1, characterized in that: The elastic ratchet damping wheel part (621) of the buffer gear (62) is mounted on the inner wall of the outer gear (61) by a number of elastic ratchet protrusions around its periphery corresponding to damping friction, thereby enabling the outer gear (61) to rotate and thus driving the buffer gear (62) to rotate as a whole.

3. The novel electronic lock according to claim 1, characterized in that: The box body (1) is provided with a latch guide groove (11), and the latch transmission block (31) is nested in the latch guide groove (11). The latch transmission block (31) is provided with a support rod (32) in the middle, and a return spring (33) is nested on the support rod (32). The latch guide groove (11) is provided with a positioning step (12) in the middle, and the bottom end of the return spring (33) on the support rod (32) is engaged with the positioning step (12).

4. A novel electronic lock according to claim 1, characterized in that: The box body (1) is also provided with a positioning cover plate (4), which is fastened to the box body (1). The positioning cover plate (4) is used to assist in positioning and covering the motor (5), gear set, toggle lever (8) and lock tongue transmission block (31).

5. A novel electronic lock according to claim 1 or 2, characterized in that: The side of the locking tongue transmission block (31) is provided with a transmission boss (34), and the output end of the outer wall of the actuating rod (8) is matched and connected with the transmission boss (34) for transmission.

6. A novel electronic lock according to claim 1, characterized in that: The box (1) is provided with several positioning posts (13), which are used to position and install the buffer gear assembly (6), the secondary transmission gear (7) and the actuating rod (8).

7. A novel electronic lock according to claim 1, characterized in that: The power input terminal of the motor (5) is connected to the battery (9) via a plug-in power supply PCB board (52).

8. A novel electronic lock according to claim 1, characterized in that: The elastic ratchet damping wheel (621) is made of nylon, rubber or POM material.

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