Tool lock with backup unlocking mechanism

Abstract

The utility model discloses a tool lock with spare unlocking mechanism relates to lock technical field, including shell, drive motor, lock bar and with the drive block that lock bar is connected, and drive motor drives lock bar to extend or retract shell, its key lies in the unlocking mechanism of increasing equipment, and this mechanism contains first reset spring, fastener and unlocking pull rope, and drive block bottom is equipped with spring cavity, and unlocking pull rope one end is fixed with lock bar through fastener, and the other end extends from shell rope hole, and first reset spring is placed in spring cavity for lock bar extension reset. This tool lock can effectively cope with drive motor power failure, burn, jam and other faults, and staff pulls external unlocking pull rope and can drive lock bar to move, and cooperates first reset spring and unlocks quickly, avoids the lock of lock " lock dead ", and improves unlocking reliability, can be high -efficiently unlocked in the scene such as emergency maintenance, rescue and so on, avoids the security hidden danger, and simple structure, easy assembly maintenance simultaneously, and strong applicability.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a tool lock with a backup unlocking mechanism. Background Technology

[0002] Electric locks, due to their ease of operation and high degree of automation, have gradually replaced traditional mechanical locks and become the mainstream type of lock. Examples include electronic seat locks, charging gun locks, and toolbox locks. Existing power tool locks typically consist of a housing, a drive motor, a locking lever, and a drive block. Their core working principle is as follows: the drive motor outputs power to drive the drive block in conjunction with the locking lever, enabling the locking lever to extend from the housing (locking) or retract into the housing (unlocking), thus meeting the needs of quickly opening and closing equipment or tools.

[0003] However, existing power tool locks have significant technical flaws in practical applications: their unlocking function relies entirely on the normal operation of the drive motor. When encountering sudden power outages, burnt-out motor coils, or jammed motor transmission components, the drive motor cannot provide driving force, and the lock lever will remain in its current state (locked or partially locked). Due to the lack of effective emergency unlocking methods, workers cannot quickly reset the lock lever to unlock the tool lock. This not only leads to equipment downtime and obstruction of tool access, affecting production efficiency, but also, in special scenarios involving emergency repairs and rescue operations, may delay response time due to the inability to unlock in a timely manner, causing safety hazards or greater economic losses.

[0004] Currently, improvements to power tool locks in the industry mainly focus on optimizing motor drive efficiency and improving the structural strength of the lock bar. No effective solution has yet been proposed that can quickly unlock the lock in the event of a motor failure. Therefore, developing a tool lock with a backup unlocking function that can cope with motor failures has become an urgent technical problem to be solved in the current power tool lock field. Utility Model Content

[0005] To address the shortcomings in the prior art, this utility model provides a tool lock with a backup unlocking mechanism.

[0006] The technical solution adopted by this utility model is: a tool lock with a backup unlocking mechanism, including a housing, a drive motor, a locking rod, and a drive block connected to the locking rod. The drive motor is used to drive the locking rod to extend out of or retract into the housing. It also includes a backup unlocking mechanism, which includes a first return spring, a fastener, and an unlocking pull rope. The bottom of the drive block is provided with a spring cavity. One end of the unlocking pull rope is fixed to the locking rod by the fastener, and the other end extends out of the housing from the rope hole. The first return spring is provided in the spring cavity to reset the locking rod when it extends out of the housing.

[0007] Furthermore, the fastener is a screw, the bottom of the spring cavity is provided with an internal threaded hole, and one end of the unlocking pull rope is connected to the internal threaded hole through the fastener.

[0008] Furthermore, the outer casing includes a bottom shell and an upper cover that fits onto the bottom shell. The upper cover is provided with a locking hole for extending and retracting the locking rod, and the bottom shell is provided with a rope hole for extending the unlocking pull rope.

[0009] Furthermore, the side of the drive block is provided with toothed surfaces, and the output end of the drive motor is connected to a drive gear, which meshes with the toothed surfaces.

[0010] Furthermore, a second reset spring is also fitted on the locking rod between the upper cover and the drive block.

[0011] Furthermore, mounting ears are provided on both sides of the bottom shell, and mounting holes are provided on the mounting ears.

[0012] Furthermore, the bottom shell and the top cover are fastened together by bolts.

[0013] The beneficial effects of this utility model are:

[0014] 1. Effectively addresses motor failures and ensures reliable unlocking: This tool lock completely overcomes the reliance on motor unlocking in existing power tool locks by adding a backup unlocking mechanism consisting of a first return spring, fasteners, and an unlocking pull rope. When the drive motor fails to operate due to power failure, burnout, jamming, or other malfunctions, the operator can pull the unlocking pull rope on the outside of the casing to directly move the lock lever, quickly retracting the lever and unlocking the lock. This prevents the lock from becoming "locked" due to motor failure and significantly improves the unlocking reliability of the tool lock.

[0015] 2. Enhance the applicability of emergency scenarios and avoid safety hazards: In special scenarios such as emergency repairs and rescue operations that require the rapid opening and closing of tool locks, the backup unlocking mechanism provides an efficient emergency unlocking solution. This can avoid delays in handling due to motor failure, reduce the risk of safety accidents, and improve the safety applicability of tool locks in complex working conditions.

[0016] In addition to the objectives, features and advantages described above, this utility model has other objectives, features and advantages.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0020] Figure 3 This is an exploded view of the present invention.

[0021] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0022] Figure 1-4 In the middle: 1. Outer shell; 2. Drive motor; 3. Locking rod; 4. Drive block; 5. First return spring; 6. Fastener; 7. Unlocking pull rope; 8. Spring cavity; 9. Rope hole; 10. Internal threaded hole; 11. Bottom shell; 12. Top cover; 13. Locking hole; 15. Toothed surface; 16. Drive gear; 17. Second return spring; 18. Mounting ear; 19. Mounting hole. Detailed Implementation

[0023] 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.

[0024] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] This utility model provides a tool lock with a backup unlocking mechanism.

[0026] In this embodiment, refer to Figure 1-4 The tool lock with a backup unlocking mechanism includes a housing 1, a drive motor 2, a locking rod 3, and a drive block 4 connected to the locking rod 3. The drive motor is used to drive the locking rod to extend out of or retract into the housing. It also includes a backup unlocking mechanism, which includes a first return spring 5, a fastener 6, and an unlocking pull rope 7. The bottom of the drive block is provided with a spring cavity 8. One end of the unlocking pull rope is fixed to the locking rod by the fastener, and the other end extends out of the housing from the rope hole 9 of the housing. The first return spring is provided in the spring cavity to reset the locking rod when it extends out of the housing.

[0027] In this embodiment, the tool lock body consists of a shell, a drive motor, a lock rod, and a drive block. The drive motor drives the lock rod to extend and retract to open and close the lock. In the additional spare unlocking mechanism, the first return spring is placed in the spring cavity at the bottom of the drive block to provide a return force for the lock rod to extend. One end of the unlocking pull rope is fixed to the lock rod by a fastener, and the other end passes through the rope hole in the shell to form a spare unlocking channel outside the motor drive.

[0028] Breaking away from the existing single unlocking mode of tool locks that rely solely on motors, this design allows for quick unlocking by pulling the external unlocking rope when the motor fails, moving the lock bar and coordinating with the first reset spring to prevent the lock from "locking up," thus improving unlocking reliability and facilitating unlocking even after power failure. It also lays the structural foundation for subsequent emergency applications in special fields.

[0029] Specifically, the fastener is a screw, the bottom of the spring cavity is provided with an internal threaded hole 10, and one end of the unlocking pull rope is connected to the internal threaded hole 10 through the fastener.

[0030] In this embodiment, the fastener of the backup unlocking mechanism is specifically set as a screw, and an internal threaded hole is machined at the bottom of the spring cavity. One end of the unlocking pull rope is threadedly connected to the internal threaded hole through the screw, so as to realize the detachable fixation of the pull rope and the locking rod.

[0031] Specifically, the outer shell includes a bottom shell 11 and an upper cover 12 that covers the bottom shell 11. The upper cover 12 is provided with a lock hole 13 for the extension and retraction of the lock rod, and the bottom shell is provided with a rope hole for the extension of the unlocking pull rope.

[0032] In this embodiment, the outer shell is divided into a split structure of a bottom shell and a top cover. The top cover has a lock hole for the extension and retraction of the lock rod to ensure the precise movement path of the lock rod. The bottom shell has a rope hole for the extension of the unlocking rope so that the extension position of the rope avoids the working area of ​​the lock rod. The split design facilitates the assembly and maintenance of the internal components of the lock.

[0033] Specifically, the drive block has a toothed surface 15 on its side, and the output end of the drive motor is connected to a drive gear 16, which meshes with the toothed surface 15.

[0034] In this embodiment, toothed surfaces are machined on the side of the drive block, and a drive gear is installed at the output end of the drive motor. Through the meshing transmission between the gear and the toothed surfaces, the rotational power of the motor is converted into the linear motion of the drive block, thereby driving the locking rod to extend and retract.

[0035] Specifically, a second return spring 17 is also fitted on the locking rod between the upper cover and the drive block.

[0036] In this embodiment, a second reset spring is sleeved on the outside of the locking rod between the upper cover and the drive block, forming a bidirectional reset structure with the first reset spring in the spring cavity, which further optimizes the flexibility of the locking rod movement and avoids slow locking rod reset due to insufficient spring force of a single spring.

[0037] Specifically, mounting ears 18 are provided on both sides of the bottom shell, and mounting holes 19 are provided on the mounting ears 18.

[0038] In this embodiment, mounting ears are provided on both sides of the bottom shell, and mounting holes are machined on the mounting ears. By passing bolts or other connecting parts through the mounting holes, the tool can be locked onto the target carrier such as equipment or cabinet.

[0039] Specifically, the bottom shell and the top cover are fixed together by bolts.

[0040] In this embodiment, bolts are used as connectors, passing through the pre-set connection holes between the bottom shell and the top cover. The bottom shell and the top cover are detachably fixed by tightening the bolts.

[0041] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A tool lock with a backup unlocking mechanism, comprising a housing, a drive motor, a locking rod, and a drive block connected to the locking rod, wherein the drive motor is used to drive the locking rod to extend from or retract into the housing, characterized in that: It also includes a backup unlocking mechanism, which includes a first reset spring, a fastener, and an unlocking pull rope. The bottom of the drive block is provided with a spring cavity. One end of the unlocking pull rope is fixed to the locking rod by the fastener, and the other end extends out of the outer shell from the rope hole of the outer shell. The first reset spring is provided in the spring cavity to reset the locking rod when it extends out of the outer shell.

2. The tool lock with a backup unlocking mechanism according to claim 1, characterized in that: The fastener is a screw, and the bottom of the spring cavity is provided with an internal threaded hole. One end of the unlocking pull rope is connected to the internal threaded hole through the fastener.

3. The tool lock with a backup unlocking mechanism according to claim 1, characterized in that: The outer casing includes a bottom shell and an upper cover that fits over the bottom shell. The upper cover has a locking hole for extending and retracting the locking rod, and the bottom shell has a rope hole for extending the unlocking pull rope.

4. The tool lock with a backup unlocking mechanism according to claim 1, characterized in that: The drive block has a toothed surface on its side, and the output end of the drive motor is connected to a drive gear, which meshes with the toothed surface.

5. The tool lock with a backup unlocking mechanism according to claim 3, characterized in that: A second reset spring is also fitted on the locking rod between the upper cover and the drive block.

6. The tool lock with a backup unlocking mechanism according to claim 3, characterized in that: The bottom shell has mounting ears on both sides, and mounting ears have mounting holes.

7. The tool lock with a backup unlocking mechanism according to claim 3, characterized in that: The bottom shell and the top cover are fastened together by bolts.

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