SECURITY LOCK
The security lock design addresses slot damage and instability by using a fastener with guide structures for stable hook engagement, enhancing theft prevention through improved anti-pull and anti-push performance.
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- SINOX CO LTD
- Filing Date
- 2023-08-16
- Publication Date
- 2026-04-10
AI Technical Summary
Conventional security locks for electronic devices damage the safety slot due to frequent pressure and are unstable, leading to ineffective theft prevention.
A security lock design featuring a fastener with axial mounting and guide structures that allow hooks to engage with the safety slot without displacing the fastener, ensuring stable support and secure engagement.
Prevents damage to the safety slot and enhances anti-pull and anti-push performance, improving theft prevention efficacy.
Smart Images
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Abstract
Description
Title of the invention: SECURITY LOCK
[0001] 1. Scope of the invention
[0002] The present invention relates to a security lock, in particular a security lock that is compatible with a security slot of a laptop computer.
[0003] 2. Description of the prior art
[0004] In order to prevent theft, a security slot is generally installed on an electronic device, in particular a portable electronic device such as a laptop, and the security slot is compatible with a particular lock such as a security lock and, as a result, the laptop is fixed in a position to prevent theft.
[0005] A conventional safety lock comprises a housing, a push rod, two hooks, a spring, and a fastening structure. The push rod is movably mounted within the housing and is capable of moving along a longitudinal direction, projecting outwards from the housing. The two hooks are movably mounted laterally within the housing and project outwards from the housing. In addition, two inclined guide structures are mounted respectively on an upper and a lower surface of the push rod, and the two hooks are mounted in the two guide structures. The spring is mounted between an inner wall surface of the housing and the push rod, and the spring pushes the push rod outwards.When the push rod compresses the spring and retracts into the housing a certain distance, the mounting structure engages with the push rod and, as a result, the push rod is held in position along the longitudinal direction.
[0006] To mount the safety lock on a device, the push rod must first be inserted into the safety slot and positioned flush against an inner surface facing an opening in the safety slot. The housing must then be pushed towards the safety slot; in another aspect, the push rod retracts relative to the housing. The two hooks that move towards the safety slot with the housing move obliquely and outwards along the two guide structures of the push rod and also engage with two lateral surfaces of the trapezoidal inner wall of the safety slot.When the case is pushed to move a certain distance, the fixing structure engages with the push stick to maintain the position of the push stick along the longitudinal direction and, as a result, the two hooks cannot retract and therefore continue to engage with the safety slot.
[0007] To disassemble the safety lock of the device, the safety lock must be moved to an unlocked state and, as a result, the fixing structure is no longer engaged with the push rod; the spring then pushes the housing out of the safety slot and causes the two hooks to retract obliquely along the guide structure to disengage from the safety slot.
[0008] However, the aforementioned conventional security lock has the following two drawbacks:
[0009] First, each time the safety lock is mounted on the device, the push rod must come to rest against the inner surface facing the opening of the safety slot, and the housing is pushed forcefully to compress the spring. This causes the inner surface facing the opening of the safety slot to be pressed by the push rod. The safety slot can be damaged, as the inner surface facing the opening of the safety slot can crack due to frequent or constant pressure exerted by the push rod.
[0010] In particular, the safety slot is formed as a single piece on the device housing and, consequently, is expensive and not environmentally friendly when the safety slot is damaged, as the entire device housing must be replaced. Furthermore, devices with frequently used safety slots are generally expensive, and it is particularly difficult for users to accept that costly devices are easily damaged under normal use and to afford the high cost of replacing damaged device housings.
[0011] Secondly, the push rod is movable relative to the housing, such that the push rod is not a stable support, and furthermore, the hooks are also movable; a combination of the push rod and the hooks is clearly unstable. However, the combination of the push rod and the hooks is intended to engage with the security slot, and it is apparently difficult to achieve a firm engagement with the security slot. The anti-pull performance along the longitudinal direction (x-axis) and the anti-push performance in two directions perpendicular to each other (y-axis and z-axis) of the conventional security lock are both insufficient, and therefore the conventional security lock is not effective in preventing theft.
[0012] The main objective of the present invention is to provide a safety lock that is configured to be mounted in a safety slot without pressing the safety slot to avoid damaging the safety slot.
[0013] The present invention relates to a security lock configured to secure an electronic device having a security slot, the security lock comprising a The fastener consists of a mounting element and at least one hook. The fastener is configured to be mounted axially in the electronic device's safety slot, and at least one guide structure is formed on the fastener. At least one hook is configured to move axially relative to the fastener, and at least one hook is configured to move radially outward along the at least one guide structure of the fastener to engage in the safety slot while simultaneously moving axially relative to the fastener. When the fastener is mounted in the safety slot and at least one hook moves relative to the fastener to engage in the safety slot, the fastener is configured to remain static.
[0014] To mount the safety lock in the safety slot, the fastening element must first be inserted into the safety slot of the electronic device, and then the hook must be moved towards the safety slot relative to the fastening element; the hook moves radially outwards along the guide structure of the fastening element to engage with the safety slot. In the aforementioned process, the fastening element remains static and does not undergo any displacement in terms of location or angle relative to the safety lock housing and the safety slot, but only the hook moves instead.
[0015] Thanks to this mounting process, the safety lock will not press against the safety slot and will also prevent any structural damage to the safety slot caused by frequent or constant loading of the safety lock. Furthermore, the fastening element will not move or rotate during this mounting process, thus providing stable support for the hook and ensuring that the hook engages securely with the safety slot. Consequently, the overall anti-pull and anti-push performance in two perpendicular directions is effectively improved.
[0016] Advantageously, at least one guide structure of the fastening element includes at least one stop part; when at least one hook moves relative to the fastening element, at least one hook is configured to come against at least one stop part and thus move radially outwards.
[0017] Advantageously, when at least one hook moves relative to the fastening element, at least one hook is configured to come radially against at least one part of the stop and thus move radially outwards.
[0018] Advantageously, when at least one hook moves towards the safety slot relative to the fastening element, at least one hook is configured to move along a curved path relative to the fastening element to engage in the safety slot.
[0019] Advantageously, the safety lock has a hook base connected to an inner end of at least one hook, and the hook base is axially movable relative to the fastening element; when at least one hook moves away from the safety slot relative to the fastening element, the hook base is configured to guide the inner end of at least one hook to move radially.
[0020] Advantageously, when the hook base moves axially relative to the fastening element, the hook base is configured to cause the axial movement of at least one hook and at the same time guide the inner end of at least one hook to move radially.
[0021] Advantageously, when at least one hook moves relative to the fastening element, at least one hook is configured to move along a curved path relative to the fastening element and, when at least one hook moves away from the safety slot relative to the fastening element, the hook base is configured to guide the inner end of at least one hook to move radially inwards.
[0022] Advantageously, the at least one guide structure of the fastening element comprises at least one stop portion; when the at least one hook moves relative to the fastening element, the at least one hook is configured to come radially abutted against the at least one stop portion and thus move radially outwards; a support point portion projecting from a radial outside side of the at least one hook and, when the at least one hook moves along a curved path along the at least one stop portion, the support point portion is configured to come abutted against the at least one stop portion so that the at least one hook moves along a curved path.
[0023] Advantageously, a guide part is formed on the inner end of at least one hook, protrudes radially inwards, and is inserted into the hook base.
[0024] Advantageously, at least one hook recess is formed on the hook base, and the at least one hook recess has a radial displacement space and an inlet which connect to each other; a width of the inlet is smaller than a width of the radial displacement space, and the guide part of the at least one hook passes through the inlet to be inserted into the radial displacement space.
[0025] Advantageously, a guide part is formed on the inner end of at least one hook and protrudes towards the hook base, and the guide part is inserted into the hook base.
[0026] Advantageously, at least one hook recess is formed on the hook base, and the at least one hook recess extends radially; the guide part of the at least one hook is inserted into the at least one hook recess.
[0027] In the drawings:
[0028] [Fig. 1] is a perspective view of a first embodiment of a lock safety according to the present invention;
[0029] [Fig.2] is an exploded view of the first embodiment of the safety lock;
[0030] [Fig.3] is another exploded view of the first embodiment of the lock security ;
[0031] [Fig.4] is a top cross-sectional view of the first embodiment of the lock security, showing serial operational movements of the security lock;
[0032] [Fig.5] is another top cross-sectional view of the first embodiment of the safety lock, showing serial operational movements of the safety lock;
[0033] [Fig.6] is a side section view of the first embodiment of the lock security, showing serial operational movements of the security lock;
[0034] [Fig.7] is another side sectional view of the first embodiment of the lock security, showing serial operational movements of the security lock;
[0035] [Fig.8] is a perspective view of a second embodiment of the lock safety according to the present invention, showing parts of the safety lock;
[0036] [Fig.9] is an exploded view of the second embodiment of the safety lock;
[0037] [Fig. 10] is a top cross-sectional view of the second embodiment of the lock security, showing serial operational movements of the security lock;
[0038] [Fig. 11] is another top cross-sectional view of the second embodiment of the safety lock, showing serial operational movements of the safety lock;
[0039] [Fig. 12] is a perspective view of the first embodiment of the lock safety, showing directions for an anti-traction test and anti-thrust tests;
[0040] [Fig. 13] is a perspective view of the first embodiment of the lock safety, showing a variant of the fastening elements;
[0041] [Fig. 14] is another perspective view of the first embodiment of the lock safety, showing another variant of the fastening elements;
[0042] [Fig. 15] is another perspective view of the first embodiment of the lock safety, showing another variant of the fastening elements;
[0043] [Fig. 16] is a perspective view of the second embodiment of the lock safety, showing a variant of the fastening elements;
[0044] [Fig. 17] is another perspective view of the second embodiment of the lock safety, showing another variant of the fastening elements;
[0045] [Fig. 18] is another perspective view of the second embodiment of the lock safety, showing another variant of the fastening elements;
[0046] [Fig. 19] is a perspective view of the second embodiment of the safety lock, showing yet another variant of the fixing elements;
[0047] [Fig.20] is a perspective view of the second embodiment of the lock safety, showing yet another variant of the fastening elements;
[0048] [Fig.21] is a perspective view of the second embodiment of the lock safety, showing yet another variant of the fastening elements;
[0049] [Fig.22] is a perspective view of the second embodiment of the lock security, showing a variant of the hooks;
[0050] [Fig.23] is another perspective view of the second embodiment of the lock security, showing another variant of the hooks;
[0051] [Fig.24] is another perspective view of the second embodiment of the lock security, showing another variant of the hooks;
[0052] With reference to Figures 1, 2 and 4, a first embodiment of a safety lock according to the present invention is configured to fix an electronic device 90, the electronic device 90 has a safety slot 91, and the safety lock comprises a fixing element 20 and at least one hook 30. In this embodiment, the safety lock has two hooks 30 but, in another embodiment, the safety lock may have only one hook 30. In addition, the safety lock has a housing 10, a hook base 40, a lock body 50 and a release element 60.
[0053] The housing 10 has an opening 11 corresponding to the safety slot 91, and the opening 11 can be located at one end of the housing 10.
[0054] The fixing element 20 is configured to be mounted axially in the safety slot 91 of the electronic device 90, and at least one guide structure 21 is formed on the fixing element 20. In this embodiment, the safety lock has two guide structures 21 to match the two hooks 30.
[0055] As shown in Figures 3 to 5, the hook 30 is able to move axially relative to the fastening element 20 and, when the hook 30 moves axially relative to the fastening element 20 towards the safety slot 91, the hook 30 moves radially outwards along the guide structure 21 of the fastening element 20 to engage in the safety slot 91. Furthermore, when the fastening element 20 is mounted in the safety slot 91, the fastening element 20 remains static as the hook 30 moves relative to the fastening element 20 to engage in the safety slot 91, i.e. that the fastening element 20 does not undergo any displacement in terms of location or angle relative to the housing 10 and the safety slot 91.
[0056] With reference to Figures 2, 4 and 5, the fastening element 20 is mounted on the opening 11 of the housing 10, and the fastening element 20 can be fixed to the housing 10 such that so that the fixing element 20 will not move or rotate relative to the housing 10, but without being limited to it; there may be variations, but at least the fixing element 20 will not move or rotate relative to the housing 10 when the hook 30 moves relative to the fixing element 20 to engage in the safety slot 91.
[0057] In this embodiment, an inner diameter of the opening 11 is close to an outer diameter of the housing 10, and the fastening element 20 approximately seals the opening 11, but is not limited to it. A cross-section of the opening 11 in the housing 10 may be slightly larger than a cross-section of a portion of the fastening element 20 that is located in the safety slot 91; the cross-section of the opening 11 may correspond to a cross-section of the safety slot 91 and, consequently, the cross-section of the fastening element 20 corresponds to the cross-section of the safety slot 91.
[0058] With reference to Figures 3 to 5, in this embodiment, each of the guide structures 21 of the two fastening elements 20 has at least one stop portion 211, and when the hook 30 moves relative to the fastening element 20, the hook 30 abuts against the stop portion 211 and thus moves radially outward. The hook 30 can abut against the stop portion 211 along a radial direction and, consequently, the hook 30 moves radially outward. Furthermore, each of the guide structures 21 comprises two stop portions 211, and the two stop portions 211 are located on two radially opposite sides of the hook 30, respectively. The number of stop portions 211 and the direction in which the stop portion 211 abuts are not limited as indicated above.Furthermore, a site where the abutment portion 211 abuts against the hook 30 can be planar, as shown in Figures 13, 16, and 19; but the site can be non-planar instead, for example, the site can have a rib 2111, as shown in Figures 14, 17, and 20, or have a groove 2112, as shown in Figures 15, 18, and 21. In addition, the guide structure 21, as well as the abutment portion 211, can be formed on an external surface of the fastener element 20, as shown in Figures 13 to 18; when the fastener element 20 has two guide structures 21, the two guide structures 21 are located on two opposite surfaces of the fastener element 20, respectively; More specifically, the two opposing surfaces comprise an upper surface and a lower surface of the fastening element 20.However, the guide structure 21, as well as the stop part 211, can be formed in the fixing element 20, as shown in Figures 19 to 21, and a channel is thus formed on the guide structures 21, but the configuration and means of the guide structure 21 of the fixing element 20 guiding the hook 30 to move are not limited, as indicated above.
[0059] With reference to Figures 3 to 5, when the hook 30 moves towards the safety slot 91 relative to the fastening element 20, the hook 30 moves radially outwards such that an outer end of the hook 30 protrudes from a radial side wall surface 22 of the fastening element 20, thus engaging with the safety slot 91. On the other hand, when the hook 30 moves away from the safety slot 91, the hook 30 moves radially inwards such that the outer end of the hook 30 retracts or only protrudes slightly from the radial side wall surface 22 of the fastening element 20. Consequently, an overall width of a portion of the safety lock in the safety slot 91 decreases.
[0060] When the hook 30 moves towards the safety slot 91 relative to the fixing element 20, the hook 30 can move in a straight line or along a curved path relative to the fixing element 20 to engage in the safety slot 91.
[0061] With reference to Figures 3 to 5 and Figures 13 to 15, in the first embodiment, the hook 30 moves along a curved path while the guide structure 21 forms a curved track, and a support point portion 31 is formed on the hook 30 and projects radially outwards from the hook 30.When the hook 30 moves along a curved path along the guide structure 21, the fulcrum part 31 abuts against a side wall surface of the abutment part 211 so that the hook 30 moves along a curved path, but the configuration and means of guiding the hook 30 so that it moves along a curved path are not limited to this; for example, a fulcrum part may be formed and project from the side wall surface of the abutment part 211 to abut against a radial outside side of the hook 30 so that the hook 30 moves along a curved path.
[0062] With reference to Figures 10 to 11 and Figures 16 to 21, in a second embodiment of the safety lock, the hook 30 moves in a straight line while the guide structure 21 forms a straight track.
[0063] With reference to Figures 3 to 5, the hook base 40 is connected to an inner end of the hook 30, and the hook base 40 is able to move axially relative to the fixing element 20. When the hook 30 moves away from the safety slot 91 relative to the fixing element 20, the hook base 40 guides the inner end of the hook 30 so that it moves radially inwards, and helps the hook 30 to move radially, whether the hook 30 moves in a straight line or along a curved path.
[0064] The hook base 40 can either only assist the hook 30 to move radially, or it can assist the hook 30 to move radially and also drive the hook 30. More specifically, the hook base 40 can drive the hook 30 in axial movement and guide the inner end of the hook 30 in radial movement relative to the fastening element 20 by pushing or pulling it, etc.
[0065] In the first embodiment, when the hook 30 moves along a curved path and away from the safety slot 91 relative to the fastening element 20, the hook base 40 guides the inner end of the hook 30 so that it moves radially inwards, thus helping the outer end of the hook 30 to retract.
[0066] In the first embodiment, a guide part 32 is formed on the inner end of the hook 30 and projects radially inwards from it, and the guide part 32 is inserted into the hook base 40, the hook base 40 thus being able to move the hook 30.
[0067] In the first embodiment, at least one hook recess 41 is formed on the hook base 40, and the number of at least one hook recess 41 is preferably two; the two hook recesses 41 are located on two opposite surfaces of the hook base 40, and the two opposite surfaces comprise an upper surface and a lower surface. The two hook recesses 41 correspond to the two hooks 30, respectively, and each of the two hook recesses 41 has a radial displacement space 411 and an inlet 412 that connect to each other. A width of the inlet 412 is smaller than a width of the radial displacement space 411, the guide part 32 of the corresponding hook 30 is inserted into the radial displacement space 411 via the inlet 412, and the guide part 32 is able to move radially in the radial displacement space 411.
[0068] With reference to Figures 8 to 10, in the second embodiment, the hook recess 41 in the hook base 40 differs from the first embodiment, and the insertion direction of the guide portion 32 of the hook 30 into the hook base 40 differs from the first embodiment. The two hooks 30 are located on opposite sides, at the top and bottom of the hook base 40, and the two guide portions 32 of the two hooks project towards the hook base 40 from the two inner ends of the two hooks 30, respectively. The guide portion 32 can be a cylinder, as shown in [Fig. 9], but the guide portion 32 can also be formed by bending the hook 30, which is flat instead, as shown in Figures 22 to 24.The two hook recesses 41 of the hook base 40 extend radially, and the two hook recesses 41 are preferably located on the left and right and spaced apart from each other, but the two hook recesses 41 may. be formed on the upper surface and lower surface of the hook base 40, respectively in place.
[0069] In addition, with reference to Figures 22 to 24, a radial lateral side of the outer end of the hook 30 which abuts against the safety slot 91 may be flat as shown in [Fig.22], or may have a boss 33 as shown in [Fig.23] or a recess 34 as shown in [Fig.24].
[0070] With reference to Figures 1, 3, 6, and 7, the lock body 50 may be key-operated or a combination lock. The lock body 50 has a core axis 51, and when the lock body 50 is in an unlocked state, the core axis 51 is able to move axially relative to the housing 10 and tends to move towards the security slot 91 or the fastening element 20. The core axis 51 is preferably moved via a first elastic element 71. One end of the core axis 51 directly or indirectly causes the hook 30 to move axially relative to the fastening element 20. The other end of the core axis 51 is preferably connected to the hook base 40 and causes the hook 30 to move via the hook base 40.
[0071] The unlocking element 60 is connected to the web axis 51, and the unlocking element 60 is able to move the web axis 51 away from the fixing element 20. Preferably, the unlocking element 60 protrudes outwards from the housing 10 and is able to be pressed towards the web axis 51; thus, the unlocking element 60 pushes the web axis 51 away from the fixing element 20 by means of at least one inclined surface 61; the unlocking element 60 tends to move away from the web axis 51, and the unlocking element 60 is preferably moved by means of a second elastic element 72, but not limited to it; the unlocking element 60 can drive the web axis 51 in another way. Furthermore, when the lock core 50 is in a locked state, the core axis 51 cannot move axially relative to the housing 10 and, as a result, the unlocking element 60 cannot be actuated or pressed.
[0072] With reference to Figures 4 and 5, to mount the safety lock in the safety slot 91, it is necessary first to actuate the unlocking element 60 to move the core axis 51 into the unlocked state of the lock core 50 and, as a result, the hook base 40 moves the two hooks 30 away from the safety slot 91 and thus the two hooks 30 retract relative to the fixing element 20. Consequently, the fixing element 20 and the outer ends of the two hooks 30 can be inserted into the safety slot 91; Then, when the release element 60 is released, the first elastic element 71 pushes the web pin 51 to move towards the safety slot 91, and further pushes the two hooks 30 via the hook base 40. Each of the two hooks 30 moves along one of the two guide structures 21 of the fastening element 20 in a straight line and obliquely as in the second embodiment or along a curved path as in the first embodiment and, as a result, the outer end of the hook 30 protrudes from the fastening element 20 to engage with the safety slot 91. Then, the locking core 50 goes into the locked state to render the unlocking element 60 inoperative, and thus the two hooks 30 continue to engage in the safety slot 91.
[0073] In the aforementioned assembly process, the fixing element 20 remains static and does not undergo any displacement in terms of location or angle relative to the housing 10 and the safety slot 91, but only the two hooks 30 move, thus avoiding damage to the safety slot 91.
[0074] In addition, the fixing element 20 will not move or rotate during the assembly process, thus providing a stable support to hold the two hooks 30 and also stably supporting the two hooks so that they engage with the safety slot 91. Therefore, the overall anti-pull and anti-push performance in two perpendicular directions is effectively improved.
[0075] Furthermore, the hook 30, which moves along a curved path in the first embodiment, is able to protrude over a greater distance than the hook 30, which moves in a straight line in the second embodiment. With the curved path of the guide structure 21, the stability of the hook 30 in the first embodiment is improved, thus enhancing its anti-traction and anti-thrust performance. More specifically, as shown in [Fig. 12], the result of a test of the first embodiment is as follows:
[0076] Regarding the anti-pull performance along a pull direction DI: a pull test is performed by engaging the two hooks 30 with a safety slot 91 of a fixed electronic device 90, and a string is threaded through the safety lock and pulled in the opposite direction of the electronic device 90 at a speed of 10 mm / min. Under the aforementioned test conditions, the anti-pull performance result is greater than 50 kgf.
[0077] Regarding the anti-thrust performance along a first radial direction D2: a thrust test is performed with a rod pushing downwards on the safety lock along the first radial direction D2 at a speed of 10 mm / min. Under the aforementioned test conditions, the result of the anti-thrust performance is greater than 50 kgf.
[0078] Regarding the anti-thrust performance along a second radial direction D3: a thrust test is performed with a rod pushing the safety lock along the second radial direction D3 at a speed of 10 mm / min. In the Under the aforementioned test conditions, the anti-thrust performance result is greater than 50 kgf.
[0079] Consequently, the anti-pull and anti-push performance in two perpendicular directions of the security lock of the present invention is effectively improved to further enhance an anti-theft effect.
Claims
Demands
1. A safety lock configured to secure an electronic device (90) having a safety slot (91); characterized in that the safety lock comprises: a fastening element (20) configured to be mounted axially in the safety slot (91) of the electronic device (90), and at least one guide structure (21) being formed on the fastening element (20); and at least one hook (30) configured to move axially relative to the fastening element (20), and at least one hook (30) being configured to move radially outwards along at least one guide structure (21) of the fastening element (20) to engage in the safety slot (91) while moving axially relative to the fastening element (20);in which, when the fastening element (20) is mounted in the safety slot (91) and at least one hook (30) moves relative to the fastening element (20) to engage in the safety slot (91), the fastening element (20) is configured to remain static; in which at least one guide structure (21) of the fastening element (20) includes at least one stop portion (211); when at least one hook (30) moves relative to the fastening element (20), at least one hook (30) is configured to abut against at least one stop portion (211) and thus move radially outwards.
2. Safety lock according to claim 1, characterized in that, when at least one hook (30) moves relative to the fixing element (20), at least one hook (30) is configured to come radially against at least one stop part (211) and thus move radially outwards.
3. Safety lock according to claim 1, characterized in that, when at least one hook (30) moves towards the safety slot (91) relative to the fastening element (20), at least one hook (30) is configured to move along a curved path relative to the fastening element (20) to engage in the safety slot (91).
4. A safety lock according to claim 1, characterized in that the safety lock has a hook base (40) connected to an inner end of at least one hook (30), and the hook base (40) is axially movable relative to the fixing element (20); when at least one hook (30) moves away from the safety slot (91) relative to the fixing element (20), the hook base (40) is configured to guide the inner end of at least one hook (30) to move radially.
5. Safety lock according to claim 4, characterized in that, when the hook base (40) moves axially relative to the fixing element (20), the hook base (40) is configured to cause axial movement of at least one hook (30) and at the same time guide the inner end of at least one hook (30) to move radially.
6. Safety lock according to claim 5, characterized in that, when at least one hook (30) moves relative to the fastening element (20), at least one hook (30) is configured to move along a curved path relative to the fastening element (20) and, when at least one hook (30) moves away from the safety slot (91) relative to the fastening element (20), the hook base (40) is configured to guide the inner end of at least one hook (30) to move radially inwards.
7. Safety lock according to claim 3 or 6, characterized in that a fulcrum part (31) projects from a radial outside side of at least one hook (30) and, when the at least one hook (30) moves along a curved path along the at least one stop part (211), the fulcrum part (31) is configured to abut against the at least one stop part (211) so that the at least one hook (30) moves along a curved path.
8. Safety lock according to any one of claims 4 to 6, characterized in that a guide part (32) is formed on the inner end of at least one hook (30), projects radially inwards, and is inserted into the hook base (40).
9. A safety lock according to claim 8, characterized in that at least one hook recess (41) is formed on the base of hook (40), and the at least one hook recess (41) has a radial displacement space (411) and an inlet (412) which connect to each other; a width of the inlet (412) is smaller than a width of the radial displacement space (411), and the guide portion (32) of the at least one hook (30) passes through the inlet (412) to be inserted into the radial displacement space (411).
10. Safety lock according to any one of claims 4 to 6, characterized in that a guide part (32) is formed on the inner end of at least one hook (30) and projects towards the hook base (40), and the guide part (32) is inserted into the hook base (40).
11. Safety lock according to claim 10, characterized in that at least one hook recess (41) is formed on the hook base (40), and the at least one hook recess (41) extends radially; the guide part (32) of the at least one hook (30) is inserted into the at least one hook recess (41).