Power supply lock capable of identifying opening of different keys

Abstract

The utility model discloses a power supply lock capable of identifying opening of different keys in the technical field of electrical safety control. The power supply lock comprises a shell. A first lock cylinder and a second lock cylinder are sequentially and coaxially arranged in the shell in the central axis direction, key holes are formed in the two lock cylinders respectively, the first lock cylinder is used for being matched with a short key, and the second lock cylinder is used for being matched with a long key. The long key is long enough to penetrate through the first lock cylinder to be inserted into the second lock cylinder, and therefore rotation control over the second lock cylinder is achieved. The first lock cylinder and the second lock cylinder which are coaxially arranged are arranged and matched with the one-way bearing structure to correspond to insertion and rotation of different keys respectively, so that one long key can penetrate through the first lock cylinder to control the second lock cylinder, the other short key can only control the first lock cylinder, and therefore multi-user and multi-authority control is achieved.

Description

Technical Field

[0001] This utility model relates to the field of electrical safety control technology, specifically a power lock that can recognize different keys to open. Background Technology

[0002] Power locks are widely used in industrial equipment, power control cabinets, distributed power systems, and other applications to control the on / off state of power, ensuring equipment safety and managing access permissions. Existing power locks generally include a housing, a lock cylinder, and a power control structure. Some products use a key to drive the lock cylinder, controlling the power switch and thus opening or closing the electrical equipment.

[0003] However, most existing power locks only support a single key opening method, failing to support multi-user or multi-access control. They also cannot distinguish which key opened the lock at what time, lacking usage records and access tracking mechanisms. This presents numerous inconveniences in practical applications. For example, when multiple maintenance personnel or operators share a single set of equipment, in the event of misoperation or a safety incident, it is impossible to accurately trace the operator, affecting subsequent management and responsibility allocation. Summary of the Invention

[0004] The purpose of this utility model is to provide a power lock that can identify different keys, so as to solve the problems mentioned in the background art that the power lock cannot distinguish the identity of the opening key and lacks multi-user management function. It also addresses the problems of some existing power locks that rely on electronic identification structure, such as complex structure, high cost, poor protection and easy circuit failure.

[0005] This utility model provides the following technical solution: a power lock capable of recognizing different keys, comprising a housing, a first lock cylinder and a second lock cylinder disposed within the housing, the first lock cylinder and the second lock cylinder being coaxially arranged and each having a keyhole for inserting different keys; the first lock cylinder and the second lock cylinder being connected by a one-way bearing, so that when one lock cylinder is rotated, the other lock cylinder can move accordingly or remain stationary; the first lock cylinder and the second lock cylinder are respectively connected to conductive components disposed within the housing, for realizing power supply on / off control.

[0006] Preferably, the conductive component includes a first conductive knob disposed at the end of the first lock cylinder, a second conductive knob disposed at the end of the second lock cylinder, the first and second conductive knobs having deep and shallow grooves respectively; a conductive key slidably disposed within the housing; the conductive key is connected to the housing via a compression spring and abuts against the surfaces of the first and second conductive knobs respectively under the action of elastic force; the conductive key engages with the deep and shallow grooves to realize the conduction or disconnection of power.

[0007] Preferably, the surfaces of the first and second conductive knobs are each provided with a plurality of deep and shallow grooves arranged in a circumferential direction.

[0008] Preferably, the deep and shallow groove arrays on the first and second conductive knobs are arranged at different angles on the circumference.

[0009] Preferably, the end of the conductive key is provided with a protruding structure to enhance the contact area with the deep groove, thereby improving conductivity stability and preventing false triggering.

[0010] Preferably, the first lock cylinder can be controlled by inserting a short key, and the second lock cylinder can be controlled by inserting a long key, so as to realize the function of driving the first lock cylinder or the second lock cylinder respectively by keys of different lengths.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Enable different keys to control the same power lock: By setting up a first lock cylinder and a second lock cylinder arranged coaxially, and with the cooperation of a one-way bearing structure, different keys are inserted and rotated respectively, so that a long key can pass through the first lock cylinder to control the second lock cylinder, while another short key can only control the first lock cylinder, thereby realizing multi-user and multi-access control.

[0013] 2. An array of deep and shallow grooves with different circumferential angles is set on the two conductive knobs. In conjunction with the conductive key that contacts the surface of the conductive knob, the current lock cylinder being turned can be identified according to the engagement position angle, thereby indirectly realizing the identification of the key. No electronic identification system is required, and the structure is more stable and reliable.

[0014] 3. This utility model adopts a purely mechanical structure to realize key recognition and on / off control, avoiding the complexity and environmental adaptability problems introduced by electronic components. It is particularly suitable for complex industrial environments such as high temperature, high humidity, and high dust, and its stability and reliability are significantly improved. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a power lock structure that can recognize different keys to open according to this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a power lock that can be opened by different keys according to this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of a power lock that can be opened by different keys according to this utility model.

[0019] Figure 4 This is a schematic diagram of the first conductive knob structure of a power lock that can be opened by different keys according to the present invention.

[0020] Figure 5 This is a schematic diagram of the second conductive knob structure of a power lock that can be opened by different keys according to this utility model;

[0021] The components represented by each number in the attached figure are listed below: housing (100), first lock cylinder (101), second lock cylinder (102), keyhole (103), one-way bearing (104), conductive element (105), first conductive knob (105a), second conductive knob (105b), deep and shallow grooves (105c), deep groove (105c-1), shallow groove (105c-2), conductive key (105d), contact rod (105e), compression spring (105f), and conductive switch (105g). Detailed Implementation

[0022] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 This utility model provides a power lock that can recognize different keys for opening, including a housing 100. Inside the housing 100, a first lock cylinder 101 and a second lock cylinder 102 are coaxially arranged along the central axis. Each lock cylinder has a keyhole 103. The first lock cylinder 101 is used with a short key, and the second lock cylinder 102 is used with a long key. The length of the long key is sufficient to pass through the first lock cylinder 101 and be inserted into the second lock cylinder 102, thereby enabling rotational control of the second lock cylinder 102.

[0024] A one-way bearing 104 is provided between the first lock cylinder 101 and the second lock cylinder 102. The inner ring of the one-way bearing 104 is fixedly connected to the first lock cylinder 101, and the outer ring is fixedly connected to the second lock cylinder 102. This bearing allows the first lock cylinder 101 to rotate synchronously when the user rotates the second lock cylinder 102. However, rotating only the first lock cylinder 101 will not rotate the second lock cylinder 102, thus achieving one-way linkage between the two lock cylinders. This structure separates the two key control paths, allowing the power lock to achieve the same control effect regardless of the type of key inserted by the user.

[0025] The ends of the first lock cylinder 101 and the second lock cylinder 102 are respectively fixedly connected to a first conductive knob 105a and a second conductive knob 105b. Both conductive knobs are located inside the housing 100 and are coaxially connected to their respective lock cylinders. The surfaces of the knobs are evenly provided with multiple alternating deep and shallow grooves along the circumferential direction, forming a groove array. Specifically, the groove array of the first conductive knob 105a is arranged at 90-degree intervals, with two sets of deep and shallow grooves 105c; the groove array of the second conductive knob 105b is arranged at 60-degree intervals, with three sets of deep and shallow grooves 105c. Each set of grooves includes a deep groove 105c-1 and a shallow groove 105c-2, for selective engagement of the conductive key 105d.

[0026] The housing 100 contains two sets of conductive keys 105d, each corresponding to one of the two conductive knobs. Each conductive key 105d is radially slidable, and one end of each key is equipped with a compression spring 105f to keep it pressed against the surface of the corresponding conductive knob, ensuring that the front end of the conductive key 105d is in close contact with the knob surface. When the conductive key 105d slides, it contacts the conductive switch 105g inside the housing 100 via a contact rod 105e, thereby controlling the on / off state of the power supply.

[0027] When the first or second lock cylinder 102 is rotated, the lock cylinder drives the connected conductive knob to rotate synchronously. The conductive key 105d remains in contact with the knob surface under the action of the spring and achieves different states of conduction control according to the depth of the groove. When the conductive key 105d is inserted into the deep groove, its front end is pressed into the deep groove, so that the contact rod 105e contacts the conductive switch 105g, forming a conductive circuit and realizing power closure; when rotated to the shallow groove position, the conductive key 105d cannot be inserted deeply, so that the contact rod 105e is disengaged from the conductive switch 105g, the circuit is broken, and the power is turned off.

[0028] Because the groove arrays of the two conductive knobs are arranged at different angles in the circumferential direction, the rotation angle corresponding to the conductive key 105d being embedded in the deep groove 105c-1 is different when different keys are turned. By observing the angle of key rotation or the rotation stroke of the lock cylinder, it can be determined whether the first lock cylinder 101 or the second lock cylinder 102 is being rotated, thereby identifying which key controls the power switch and achieving physical identification of the key type without relying on electronic components.

[0029] With the above structure, when the user uses different keys to open the power lock, not only can the power supply be controlled, but the contact angle between the conductive key 105d and the groove can also be used to indirectly identify whether the key corresponding to the first lock cylinder 101 or the second lock cylinder 102 is being used. This enables the identification and recording function. The structure is simple, the identification is clear, and it is suitable for industrial use scenarios with high requirements for access control and power management.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A power lock capable of recognizing different keys for opening, characterized in that: Includes a housing (100), a first lock cylinder (101) and a second lock cylinder (102) disposed within the housing (100), the first lock cylinder (101) and the second lock cylinder (102) being coaxially arranged and having keyholes (103) for inserting different keys respectively. The first lock cylinder (101) and the second lock cylinder (102) are connected by a one-way bearing (104) to enable the other lock cylinder to move or remain stationary when one of the lock cylinders is rotated. The first lock cylinder (101) and the second lock cylinder (102) are respectively connected to the conductive element (105) disposed in the housing (100) to realize the on-off control of the power supply.

2. The power lock capable of recognizing different keys as described in claim 1, characterized in that: The conductive component (105) includes a first conductive knob (105a) disposed at the end of the first lock cylinder (101) and a second conductive knob (105b) disposed at the end of the second lock cylinder (102). The first conductive knob (105a) and the second conductive knob (105b) are respectively provided with deep and shallow grooves (105c). A conductive key (105d) is slidably disposed within the housing (100); the conductive key (105d) is connected to the housing (100) via a compression spring (105f), and under the action of elastic force, it abuts against the surfaces of the first conductive knob (105a) and the second conductive knob (105b) respectively; The conductive key (105d) engages with the deep and shallow grooves (105c) to enable or disable the power supply.

3. The power lock capable of recognizing different keys as described in claim 2, characterized in that: The surfaces of the first conductive knob (105a) and the second conductive knob (105b) are each provided with a plurality of deep and shallow grooves (105c) arranged in a circumferential direction.

4. The power lock capable of recognizing different keys as described in claim 2, characterized in that: The array of deep and shallow grooves (105c) on the first conductive knob (105a) and the second conductive knob (105b) are arranged at different angles on the circumference.

5. The power lock capable of recognizing different keys as described in claim 2, characterized in that: The end of the conductive key (105d) is provided with a protruding structure to enhance the contact area with the deep groove, thereby improving conductivity stability and preventing false triggering.

6. The power lock capable of recognizing different keys as described in claim 1, characterized in that: The first lock cylinder (101) can be controlled by inserting a short key, and the second lock cylinder (102) can be controlled by inserting a long key, so as to realize the function of driving the first lock cylinder (101) or the second lock cylinder (102) respectively by keys of different lengths.

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