A pick-resistant power lock

Abstract

This utility model discloses a pry-resistant power lock relating to the field of power lock technology, comprising: a housing; a sliding track disposed within the housing; a lock cylinder that slides and rotates within the sliding track; a conductive knob connected to the lock cylinder, the conductive knob having multiple deep and shallow grooves on its outer periphery; a conductive key disposed within the housing, the conductive key being elastically connected to the housing via a compression spring and engaging with the deep and shallow grooves under the action of elastic force to limit the rotational position of the conductive knob; a first connecting member between the lock cylinder and the conductive knob; and a second connecting member between the conductive knob and the housing; the first connecting member is configured to allow the lock cylinder to be axially pressed and moved along the sliding track only when the lock cylinder rotates to a predetermined angle; the second connecting member is configured to allow the lock cylinder to drive the conductive knob to rotate only after the lock cylinder has rotated to the predetermined angle and been axially pressed.

Description

Technical Field

[0001] This utility model relates to the technical field of power locks, specifically to a pry-resistant power lock. Background Technology

[0002] With the increasing number of industrial equipment, smart terminals, and critical power supply systems, power management security has become a crucial guarantee for equipment operational reliability. In scenarios such as distribution cabinets, charging piles, and power equipment, key-controlled power locks are typically installed outside the power switches to prevent unauthorized personnel from arbitrarily turning on the power or performing malicious operations.

[0003] Existing power locks have relatively simple structures, mostly mechanical rotary mechanisms, which only require a key to be inserted and turned to activate or deactivate an internal knob. However, these locks generally suffer from exposed internal structures and a single transmission path in the lock cylinder, making them vulnerable to damage from technical lock-picking tools. Power can be forcibly opened without a valid key, leading to equipment malfunction or safety accidents.

[0004] For example, a common method of unlocking by vibration involves inserting a special vibrating key into the lock cylinder and striking it forcefully. The instantaneous impact causes the pins or levers inside the lock cylinder to bounce, and in the brief gap before the pins return to their original positions, the lock cylinder is rapidly rotated, thus allowing the lock to be opened abnormally. This type of attack is particularly effective against traditional lock cylinders with simple structures, and it requires simple tools, is highly concealed, and poses a significant security risk.

[0005] Another method is the insert-type unlocking, where a thin metal strip is inserted into the gap of the lock cylinder to actuate the pins or lever mechanism inside the cylinder, aligning them with the shear line, thus simulating a normal unlocked state without a key. This method is particularly effective for lock cylinders with simple structures and a lack of internal blocking design, and has a high success rate. Utility Model Content

[0006] The purpose of this invention is to provide a pry-resistant power lock to solve the problem mentioned in the background art that traditional power locks are easily forcibly opened.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pry-resistant power lock, comprising: a housing; a sliding track disposed within the housing; a lock cylinder that slides and rotates within the sliding track; a conductive knob connected to the lock cylinder, the outer periphery of which is provided with multiple deep and shallow grooves; a conductive key disposed within the housing, the conductive key being elastically connected to the housing via a compression spring and engaging with the deep and shallow grooves under elastic force to limit the rotational position of the conductive knob; a first connecting member is provided between the lock cylinder and the conductive knob, and a second connecting member is provided between the conductive knob and the housing; the first connecting member is configured to allow the lock cylinder to be axially pressed and moved along the sliding track only when the lock cylinder rotates to a predetermined angle; the second connecting member is configured to allow the lock cylinder to drive the conductive knob to rotate only after the lock cylinder has rotated to the predetermined angle and been axially pressed.

[0008] Preferably, the first connector includes a plurality of arc-shaped locking blocks, a plurality of arc-shaped locking plates, and an elastic spring disposed between the lock cylinder and the conductive knob; the arc-shaped locking blocks are fixedly disposed on the lock cylinder, and the arc-shaped locking plates are fixedly disposed on the conductive knob, the arc-shaped locking blocks and the arc-shaped locking plates having the same radius of curvature; the elastic spring is used to provide a return force after the lock cylinder is axially pressed; when the lock cylinder rotates to a predetermined angle, the arc-shaped locking blocks can enter the gap between two adjacent arc-shaped locking plates and slide axially within the gap.

[0009] Preferably, the second connector includes an anti-rotation through hole disposed on the conductive knob; a rotating column disposed inside the housing, the upper part of the rotating column being provided with an anti-rotation protrusion that cooperates with the anti-rotation through hole; and a telescopic spring disposed between the housing and the conductive knob, the telescopic spring being used to provide a restoring force after the conductive knob is driven to rotate.

[0010] Preferably, the plurality of arc-shaped locking blocks and the plurality of arc-shaped locking plates are staggered relative to each other, so that each arc-shaped locking block can accurately enter the gap between two adjacent arc-shaped locking plates when the lock cylinder rotates to a predetermined angle.

[0011] Preferably, the side of the arc-shaped locking plate is provided with staggered vibration protrusions. The vibration protrusions slide along the gap between the two arc-shaped locking plates and contact the arc-shaped locking block to apply intermittent slight vibrations to the lock cylinder.

[0012] Preferably, the outer casing is provided with an ejection groove that matches the rotation angle of the lock cylinder. When the lock cylinder vibrates, the ejection groove provides release space for the pins or paddles located inside the lock cylinder, allowing the pins or paddles to partially or completely eject from the lock cylinder.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting a first connector between the lock cylinder and the conductive knob, axial pressing is only allowed after the lock cylinder is rotated to a predetermined angle, and the conductive knob is further rotated in conjunction with the lock cylinder. This effectively breaks the single path of the traditional lock cylinder that can be connected to the power supply with a single turn, and increases the difficulty of unauthorized opening.

[0015] 2. This utility model sets a misalignment structure and vibration protrusion between the arc-shaped locking block and the arc-shaped locking plate, so that the lock cylinder vibrates during rotation or sliding. An ejection groove matching the rotation angle of the lock cylinder is set in the outer shell, so that the pins or paddles in the lock cylinder are ejected under vibration, thereby interfering with the unlocking path of technical vibration tools and improving the resistance to vibration unlocking methods. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a schematic diagram of a pry-resistant power lock structure according to the present invention;

[0018] Figure 2 This is an exploded view of the anti-pry type power lock structure of this utility model;

[0019] Figure 3 This is an exploded view of the anti-pry type power lock structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the pop-out slot structure of an anti-pry power lock according to this utility model;

[0021] Figure 5 This utility model relates to a pry-resistant power lock. Figure 3 Enlarged view of the structure at point A;

[0022] Figure 6 This utility model relates to a pry-resistant power lock. Figure 2 Enlarged view of the structure at point B;

[0023] Figure 7 This utility model relates to a pry-resistant power lock. Figure 3 Enlarged view of the structure at point C;

[0024] Figure 8 This utility model relates to a pry-resistant power lock. Figure 2Enlarged view of the structure at point D;

[0025] The attached diagram lists the components represented by each number as follows:

[0026] The components include: outer shell (100), sliding rail (101), lock cylinder (102), conductive knob (103), deep and shallow grooves (104), conductive key (105), compression spring (106), first connector (107), arc-shaped snap block (107a), arc-shaped snap plate (107b), elastic spring (107c), second connector (108), anti-rotation through hole (108a), rotating column (108b), anti-rotation protrusion (108c), telescopic spring (108d), vibration protrusion (109), and pop-out groove (110). Detailed Implementation

[0027] 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 scope of protection of the present utility model.

[0028] Please see Figure 1-8 This utility model provides a pry-resistant power lock, including a housing 100 and a sliding track 101 disposed inside the housing 100;

[0029] A lock cylinder 102 that can slide and rotate in the sliding track 101;

[0030] A conductive knob 103 connected to the lock cylinder 102 has multiple deep and shallow grooves 104 on its outer periphery.

[0031] The conductive key 105 is located inside the housing 100. The conductive key 105 is elastically connected to the housing 100 via a compression spring 106. Under the action of the elastic force, it engages with the deep and shallow grooves 104 of the conductive knob 103 to limit the rotation position of the conductive knob 103.

[0032] A first connector 107 is provided between the lock cylinder 102 and the conductive knob 103, and a second connector 108 is provided between the conductive knob 103 and the outer casing 100;

[0033] The first connector 107 is configured such that the lock cylinder 102 can be pressed and moved axially along the sliding track 101 only when the lock cylinder 102 is rotated to a predetermined angle;

[0034] The second connector 108 is configured such that the lock cylinder 102 can only drive the conductive knob 103 to continue rotating after the lock cylinder 102 has rotated to a predetermined angle and been pressed.

[0035] During the rotation of the conductive knob 103, the deep and shallow grooves 104 on its outer periphery sequentially engage with the conductive key 105, causing the conductive key 105 to move to different positions within the housing 100. This allows the conductive key 105 to be switched on or off with the power switch, thus controlling the power supply. Specifically, when the deep groove engages with the conductive key 105, the conductive key 105 contacts the conductive switch, and the power is turned on. When the shallow groove engages with the conductive key 105, the conductive key 105 separates from the conductive switch, and the power is turned off.

[0036] The first connector 107 includes: a plurality of arc-shaped snap-fit ​​blocks 107a, a plurality of arc-shaped snap-fit ​​plates 107b, and an elastic spring 107c disposed between the lock cylinder 102 and the conductive knob 103;

[0037] The arc-shaped locking block 107a is fixedly mounted on the lock cylinder 102, and the arc-shaped locking plate 107b is fixedly mounted on the conductive knob 103. The arc-shaped locking block 107a and the arc-shaped locking plate 107b have the same radius of curvature. The arc-shaped locking block 107a and the arc-shaped locking plate 107b abut against each other, thereby preventing the lock cylinder 102 from sliding in the sliding track 101.

[0038] The elastic spring 107c is used to provide axial return force after the lock cylinder 102 is pressed;

[0039] When the lock cylinder 102 rotates to a preset angle, the arc-shaped locking block 107a can accurately enter the gap between two adjacent arc-shaped locking plates 107b. The arc-shaped locking block 107a can slide axially within the gap, so that the lock cylinder 102 can slide in the sliding track 101.

[0040] In the specific structure, two arc-shaped locking blocks 107a and two corresponding arc-shaped locking plates 107b are provided, and the locking blocks and locking plates are arranged in a staggered manner. When the lock cylinder 102 rotates, the outer side of the arc-shaped locking block 107a contacts the side of the arc-shaped locking plate 107b; only when the lock cylinder 102 rotates to a preset angle can the arc-shaped locking block 107a enter the gap between the locking plates to achieve position positioning.

[0041] The second connector 108 includes: an anti-rotation through hole 108a disposed on the conductive knob 103;

[0042] The rotating column 108b is provided inside the housing 100, and the upper part of the rotating column 108b is provided with an anti-rotation protrusion 108c that cooperates with the anti-rotation through hole 108a;

[0043] The telescopic spring 108d, which is disposed between the conductive knob 103 and the housing 100, is used to provide a restoring force after the conductive knob 103 is driven to rotate.

[0044] During operation, the anti-rotation protrusion 108c and the anti-rotation through hole 108a are engaged to prevent the conductive knob 103 from being rotated prematurely. Only when the lock cylinder 102 is pressed down and moved away, the anti-rotation protrusion 108c separates from the anti-rotation through hole 108a, and the conductive knob 103 can be rotated.

[0045] Furthermore, the side of the arc-shaped latching plate 107b is provided with staggered vibration protrusions 109. During the rotation of the lock cylinder 102 and the sliding of the arc-shaped latching block 107a along the gap between the two latching plates, the vibration protrusions 109 and the latching block make contact friction, thereby generating intermittent slight vibrations to the lock cylinder 102, which are used to interfere with technical lock picking behavior, such as vibration unlocking.

[0046] In addition, the outer casing 100 is provided with an ejection groove 110 that matches the rotation angle of the lock cylinder 102. When the lock cylinder 102 vibrates, it provides release space for the pins or paddles inside the lock cylinder 102, allowing them to partially or completely eject from the lock cylinder 102 structure, interfering with its normal position and thus disrupting the abnormal opening path.

[0047] Working principle: During normal use, the power lock operates as follows:

[0048] In the initial state, the lock cylinder 102 is in the closed position, and the conductive knob 103 and the outer shell 100 are engaged with each other through the anti-rotation protrusion 108c and the anti-rotation through hole 108a in the second connector 108. The lock cylinder 102 cannot directly drive the conductive knob 103 to rotate. The conductive key 105 is engaged with a certain groove. At this time, the conductive key 105 is not in contact with the power switch or is disconnected, and the power is in the off state.

[0049] When the matching key is inserted into the lock cylinder 102 and rotated, the lock cylinder 102 causes the arc-shaped locking block 107a fixed thereon to rotate as well. Only when the lock cylinder 102 rotates to a predetermined angle can the arc-shaped locking block 107a accurately enter the gap between two adjacent arc-shaped locking plates 107b on the conductive knob 103.

[0050] When the lock cylinder 102 rotates to the predetermined angle, the user can press the lock cylinder 102 axially. At this time, the arc-shaped locking block 107a slides forward along the gap between the locking plates, breaking through the limiting structure of the first connecting member 107, thereby forming a linkage connection between the lock cylinder 102 and the conductive knob 103. During this process, the side of the arc-shaped locking plate 107b is provided with misaligned vibration protrusions 109. When the arc-shaped locking block 107a slides axially, it rubs against the vibration protrusions 109, generating slight intermittent vibrations, which can interfere with the unlocking rhythm when illegal attempts are made to open the lock. At the same time, the pop-out groove 110 preset in the outer shell 100 provides release space for the tumblers or paddles inside the lock cylinder 102 at the moment the lock cylinder 102 vibrates, causing them to pop out partially or completely, disrupting the normal internal structural layout of the lock cylinder 102, thereby locking the rotation of the lock cylinder 102 again.

[0051] While axially pressing, the anti-rotation protrusion 108c in the second connector 108 disengages from the anti-rotation through hole 108a, and the conductive knob 103 loses its anti-rotation constraint. In this state, continuing to rotate the lock cylinder 102 will cause the conductive knob 103 to rotate.

[0052] When the conductive knob 103 is rotated, the deep and shallow grooves 104 on its outer periphery successively engage with the conductive key 105. Under the elastic force of the compression spring 106, the conductive key 105 jumps and engages in different deep and shallow grooves 104. The position of the conductive key 105 changes accordingly, eventually making it contact or disconnect from the power switch, thus turning the power on or off.

[0053] When the lock cylinder 102 rotates back to the initial angle, the arc-shaped locking block 107a exits the gap between the arc-shaped locking plates 107b, and the lock cylinder 102 automatically resets under the action of the elastic spring 107c; ​​the conductive knob 103 also resets to its original position under the action of the telescopic spring 108d, and relocks the rotation angle through the second connector 108 to prevent the conductive knob 103 from being rotated directly.

[0054] 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.

[0055] 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 pick-resistant power lock, characterized by: A housing (100), a sliding track (101) disposed within the housing (100), and a lock cylinder (102) that slides and rotates in the sliding track (101). A conductive knob (103) is connected to the lock cylinder (102), and the outer periphery of the conductive knob (103) is provided with a plurality of deep and shallow grooves (104). The conductive key (105) is disposed in the housing (100). The conductive key (105) is elastically connected to the housing (100) through a compression spring (106) and engages with the deep and shallow grooves (104) under the action of elastic force, thereby limiting the rotation position of the conductive knob (103). A first connector (107) is provided between the lock cylinder (102) and the conductive knob (103), and a second connector (108) is provided between the conductive knob (103) and the outer shell (100). The first connector (107) is configured such that when the lock cylinder (102) rotates to a predetermined angle, the lock cylinder (102) can be pressed and moved axially along the sliding track (101); The second connector (108) is configured such that after the lock cylinder (102) is rotated to the predetermined angle and axially pressed, the lock cylinder (102) can drive the conductive knob (103) to rotate.

2. The anti-pick power lock according to claim 1, characterized in that: The first connector (107) includes a plurality of arc-shaped snap-fit ​​blocks (107a), a plurality of arc-shaped snap-fit ​​plates (107b), and an elastic spring (107c) disposed between the lock cylinder (102) and the conductive knob (103). The arc-shaped latching block (107a) is fixedly mounted on the lock cylinder (102), and the arc-shaped latching plate (107b) is fixedly mounted on the conductive knob (103). The arc-shaped latching block (107a) and the arc-shaped latching plate (107b) have the same radius of curvature. The elastic spring (107c) is used to provide a return force after the lock cylinder (102) is axially pressed; When the lock cylinder (102) is rotated to a predetermined angle, the arc-shaped locking block (107a) can enter the gap between two adjacent arc-shaped locking plates (107b) and slide axially within the gap.

3. The anti-prying power lock of claim 1, wherein: The second connector (108) includes: An anti-rotation through hole (108a) is provided on the conductive knob (103). A rotating column (108b) is disposed inside the outer casing (100), and an anti-rotation protrusion (108c) is provided on the upper part of the rotating column (108b) to cooperate with the anti-rotation through hole (108a). A telescopic spring (108d) is disposed between the housing (100) and the conductive knob (103), the telescopic spring (108d) being used to provide a restoring force after the conductive knob (103) is rotated.

4. The anti-pick power lock according to claim 2, wherein: The multiple arc-shaped locking blocks (107a) and the multiple arc-shaped locking plates (107b) are arranged in a staggered manner so that each arc-shaped locking block (107a) can accurately enter the gap between two adjacent arc-shaped locking plates (107b) when the lock cylinder (102) rotates to a predetermined angle.

5. The anti-pick power lock of claim 2, wherein: The side of the arc-shaped locking plate (107b) is provided with staggered vibration protrusions (109). The vibration protrusions (109) slide along the gap between the two arc-shaped locking plates (107b) on the arc-shaped locking block (107a) and come into contact with the arc-shaped locking block (107a) to apply intermittent slight vibration to the lock cylinder (102).

6. The anti-prying power lock of claim 1, wherein: The outer casing (100) is provided with a pop-out groove (110) that matches the rotation angle of the lock cylinder (102). When the lock cylinder (102) vibrates, the pop-out groove (110) provides a release space for the pins or paddles set in the lock cylinder (102), so that the pins or paddles can be partially or completely popped out of the lock cylinder (102).

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