Lock head protection structure and snakelike chain lock thereof

Abstract

The utility model discloses a lock head protection structure and a snakelike chain lock thereof. The lock head protection structure comprises a lock head with a key hole. The protective shell is arranged outside the lock head in a sleeving manner and is provided with a key extending hole; the self-opening and self-closing plugging piece is movably mounted in the protective shell and is used for plugging the key extending hole; the guide cavity is positioned in the protective shell and between the key extending hole and the key hole of the lock head; the supporting plate is fixedly arranged in the guiding cavity and provided with a guiding hole coaxial with a key hole outside the key stretching-in hole, in daily use, by the adoption of the technical scheme, the obtained S-shaped chain lock has the aesthetic feeling of an industrial product as a whole, then the sales volume of the product can be increased, meanwhile, a sealing protection structure is formed by the protection shell and the self-opening-closing plugging piece, and the service life of the S-shaped chain lock is prolonged. According to the self-opening and self-closing lock, the situation that a surface coating or spray paint falls off due to scratching or impacting of the lock head can be avoided, the service life of the lock head is prolonged, when the lock head needs to be opened, a key matched with the lock head jacks the self-opening and self-closing plugging piece, penetrates through the guide hole and then is inserted into the lock head, and then unlocking action can be conducted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lockset, concretely relates to a lock head protection structure and its snake chain lock. BACKGROUND

[0002] Chain lock is composed of chain and lock head two parts. Chain is the main part of the lock, its thickness, length and material determine the overall strength and application range of the lock; The lock head contains lock cylinder and lock tongue and other components, the quality of the lock cylinder directly affects the anti-theft performance of the lock, high-quality lock cylinder has complex internal structure, can effectively prevent lock picking and technical unlocking, for example:

[0003] The utility model discloses a chain lock of Chinese utility model patent no. CN116556783A, one end of the chain is connected together with the lock shell, so there is no risk of loss, and the overall fixed structure is hidden in the lock shell and cannot be damaged, and cannot be unlocked without the correct key, but it has the following defects:

[0004] 1, the lock head is directly exposed, and the surface is easy to scratch and damage the anticorrosive plating or paint after a long time, resulting in the lock head being corroded and damaged;

[0005] 2, the keyhole is directly exposed, which can cause dust, rainwater and other objects to enter the lock head, causing the internal mechanism to be jammed and unable to be unlocked;

[0006] 3, without guide mechanism, the key is difficult to accurately align the pin or blade structure inside the lock cylinder, and the key is easy to tilt in the lock cylinder, which aggravates the wear of the lock cylinder internal structure and the key, the precision of the lock cylinder will decrease, affecting the normal work of the lock cylinder internal mechanical structure. SUMMARY

[0007] The utility model aims at solving one of the technical problems existing in the prior art.

[0008] The application provides a lock head protection structure, a lock head protection structure, comprising:

[0009] The protective shell is sleeved outside the lock head with a keyhole, and the key is inserted into the hole;

[0010] The self-opening and closing plugging member is movably installed in the protective shell and is used for plugging the key insertion hole.

[0011] Further comprising:

[0012] The guide cavity is located between the key insertion hole and the keyhole of the lock head in the protective shell;

[0013] The support plate is fixedly arranged in the guide cavity and has a guide hole coaxial with the keyhole outside the key insertion hole.

[0014] The support plates are provided with a plurality of guide holes, the guide holes on the bottom support plate are closed circular holes, and the guide holes on the other support plates are long strip-shaped holes with arc-shaped inner ends.

[0015] The support plates are provided with at least two plates.

[0016] The self-opening and closing blocking member comprises:

[0017] A rotating shaft is rotatably installed at the top of the guide cavity;

[0018] A cover plate is fixedly connected with the rotating shaft through a turnover frame and can block the key insertion hole;

[0019] A resilient member is arranged to apply a force to the turnover frame to turn the turnover frame towards the key insertion hole.

[0020] The resilient member comprises:

[0021] A helical torsion spring is sleeved on the rotating shaft and provided with two extension rods at two ends, one of the extension rods abuts against the bottom surface of the cover plate, and the other extension rod abuts against the inner wall of the guide cavity.

[0022] Further comprising:

[0023] A lower hole is arranged at the bottom end of the protective shell;

[0024] An installation cavity is arranged in the protective shell and communicates with the guide cavity at the top end;

[0025] A plurality of U-shaped clamping plates are arranged in the installation cavity at intervals;

[0026] The installation cavity is located between the lower hole and the guide cavity.

[0027] The protective shell comprises left and right parts, and the left and right parts of the protective shell are connected with each other through a clamping structure.

[0028] The clamping structure comprises:

[0029] A plurality of clamping columns are fixedly arranged on the left / right part of the protective shell;

[0030] A plurality of clamping holes are arranged on the right / left part of the protective shell;

[0031] Each clamping column is inserted into the corresponding clamping hole in an interference fit.

[0032] Meanwhile, a snake-shaped chain lock is disclosed, which comprises a lock head, a key hole, a lock cylinder, a lock hole, a chain, a fixed end and a movable end, the fixed end and the movable end are fixedly arranged at two ends of the chain respectively, the fixed end is fixedly connected with the lock head and extends out of the lower hole, the movable end can be inserted into the lock hole through the protective shell, and a flexible material sleeve with ductility is sleeved on the surface of the chain.

[0033] The beneficial effects of the utility model are as follows:

[0034] 1、Through the setting of the protective shell and the self-opening and closing plugging piece, the surface plating or paint of the lock head can be prevented from falling off due to scratching or impact, and rainwater or dust can be prevented from entering the lock head, thereby prolonging the service life of the lock head.

[0035] 2、Through the setting of the guide cavity and the support plates with guide holes, the key can be coaxial with the key hole on the lock cylinder when the key is inserted into the lock cylinder, so that the key and the internal structure of the lock cylinder are prevented from being excessively worn, thereby prolonging the service life of the lock cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 It is a perspective view of the lock head protection structure in the embodiment of the present application (complete protective shell).

[0037] Figure 2 It is a perspective view of the lock head protection structure in the embodiment of the present application (protective shell opened).

[0038] Figure 3 It is a perspective view of the internal structure of the protective shell in the embodiment of the present application.

[0039] Figure 4 It is a sectional view of the internal structure of the lock head protection structure in the embodiment of the present application.

[0040] Figure 5 It is a perspective view of the assembly state of the snake-shaped chain lock and the lock head protection mechanism in the embodiment of the present application (the chain is composed of a plurality of iron rings connected in series).

[0041] Figure 6 It is a perspective view of the assembly state of the snake-shaped chain lock and the lock head protection mechanism in the embodiment of the present application (the chain is composed of a plurality of columnar bodies connected in series).

[0042] Figure 7 It is a perspective view of the assembly state of the snake-shaped chain lock and the lock head protection mechanism in the embodiment of the present application (with a flexible material sleeve state).

[0043] REFERENCE NUMERALS

[0044] 1-protective shell, 2-key insertion hole, 3-self-opening and closing plugging piece, 31-rotation shaft, 32-cover plate, 33-elastic member, 331-spiral torsion spring, 332-extension rod, 4-guide cavity, 5-support plate, 6-guide hole, 7-lower hole, 8-mounting cavity, 9-U-shaped clamping plate, 10-clamping hole, 100-key hole, 200-lock head, 300-lock cylinder, 400-lock hole, 500-chain, 600-fixed end, 700-movable end, 800-flexible material sleeve. DETAILED DESCRIPTION

[0045] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly described. Obviously, the described embodiments are a part rather than all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the range of protection of the present application.

[0046] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the front and rear associated objects are in an "or" relationship.

[0047] The lock head protection structure and the snake chain lock provided by the embodiments of the present application will be described in detail below in combination with the drawings and specific embodiments and application scenarios.

[0048] Embodiment 1:

[0049] As shown in the drawings, Figures 1 to 4 The present application provides a lock head protection structure, which comprises a protection shell 1, which is sleeved outside a lock head 200 with a key hole 100 outside, and has a key insertion hole 2; a self-opening and closing plugging member 3 movably installed in the protection shell 1, used for plugging the key insertion hole 2.

[0050] Further, it further comprises a guide cavity 4 located between the key insertion hole 2 and the key hole 100 of the lock head 200 in the protection shell 1; a support plate 5 fixedly arranged in the guide cavity 4, provided with a guide hole 6 coaxial with the key hole 100 outside the key insertion hole 2.

[0051] Preferably, the support plate 5 is provided with a plurality of guide holes 6, and the guide holes 6 on the bottom support plate 5 are closed circles, and the guide holes 6 on the remaining support plates 5 are long strips, and the inner ends are circular arcs.

[0052] Preferably, the support plate 5 is provided with at least two support plates.

[0053] Further, the self-opening and closing plugging member 3 comprises: a rotating shaft 31 rotatably arranged at the top of the guide cavity 4; a cover plate 32 fixedly connected with the rotating shaft 31 through a turnover frame, capable of plugging the key insertion hole 2; and an elastic member 33 for applying a turning force to the turnover frame towards the key insertion hole 2.

[0054] Further, the elastic member 33 comprises a helical torsion spring 331 sleeved on the rotating shaft 31, and both ends of the helical torsion spring 331 are provided with extension rods 332, one of which abuts against the bottom surface of the cover plate 32, and the other of which abuts against the inner wall of the guide cavity 4.

[0055] Further, the protective shell 1 is provided with a lower hole 7 at the bottom end, and a mounting cavity 8 in communication with the guide cavity 4 at the top end.

[0056] Preferably, the protective shell 1 comprises left and right parts, and the left and right parts of the protective shell 1 are connected to each other through a clamping structure.

[0057] Further, the clamping structure comprises a plurality of clamping columns fixed on the left / right part of the protective shell 1, and a plurality of clamping holes 10 provided on the right / left part of the protective shell 1, each clamping column being inserted into the corresponding clamping hole 10 in an interference fit.

[0058] Meanwhile, a snake-shaped chain lock is disclosed, which comprises a lock head 200, a keyhole 100, a lock cylinder 300, a lock hole 400, a chain 500, a fixed end 600 and a movable end 700, the fixed end 600 and the movable end 700 being respectively fixed on both ends of the chain 500, the fixed end 600 being fixedly connected to the lock head 200 and extending out of the lower hole 7, the movable end 700 being capable of being inserted into the lock hole 400 through the protective shell 1, and the chain 500 being sleeved with a flexible material sleeve 800 (leather, cloth, rubber or flexible plastic) having ductility.

[0059] Preferably, the chain 500 is formed by a plurality of iron rings sleeved and connected in series.

[0060] Preferably, the chain 500 is formed by a plurality of columnar bodies connected in series through hinge shafts.

[0061] The obtained snake-shaped chain lock has the aesthetic sense of an industrial product, thereby improving the sales of the product, and the protective shell 1 and the self-opening and closing sealing member 3 form a sealed protection structure, which can avoid the surface plating or paint of the lock head 200 from being peeled off due to scratching or impact, thereby prolonging the service life of the lock head.

[0062] In this embodiment of the present application, due to the above structure, under the action of the helical torsion spring 331, the extension rod 332 presses the cover plate 32 to block the key insertion hole 2, the clamping posts and the clamping holes 10 on the left and right parts of the protective shell 1 are inserted into each other in interference fit, and the outer surface of the lock head 200 is completely wrapped and closed. When unlocking is needed, the key matched with the lock head 200 is inserted into the key insertion hole 2, the cover plate 32 is pushed into the guide cavity 4 from the key insertion hole 2, the cover plate 32 and the turnover plate are lowered around the rotating shaft 31 and enter the long strip-shaped guide hole 6, after the key is inserted into each guide hole 6, the cover plate 32 and the turnover plate are turned to the end of the guide hole 6, the knob spring is deformed to store elastic potential energy, as the key continues to be inserted, after the key passes through the guide hole 6 at the center of the closed circle, the key is inserted into the lock head 200, and then the key is turned to unlock the lock core, when the key is pulled out, after the key is separated from each guide hole 6, the elastic potential energy of the knob spring is released to push the turnover frame and the cover plate 32 to move around the rotating shaft 31 to the key insertion hole 2, and after the key is separated from the key insertion hole 2, the cover plate 32 blocks the key insertion hole 2;

[0063] When the key is inserted into the guide cavity 4, the periphery of the key is in contact with the inner wall of each guide hole 6 and the surface of the cover plate 32, so that the key is inserted into the lock body in a coaxial manner with the key hole 100 on the lock body, and the positioning effect of the key periphery is improved by the arrangement of the plurality of support plates 5 and the plurality of guide holes 6.

[0064] When the left and right parts of the protective shell 1 are folded, the clamping posts are inserted into the corresponding clamping holes 10 in interference fit, the peripheral wall of the lock head 200 is matched with each U-shaped clamping plate 9, and the upper end and the lower end are respectively in abutment with the top and the bottom of the mounting cavity 8.

[0065] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that includes a list of elements not only includes those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0066] The embodiments of the present application are described above with reference to the accompanying drawings, but the present application is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims.

Claims

1. A lock cylinder protection structure, characterized by, The utility model relates to a lock head protection structure, including: Protective shell (1) is set outside the lock head (200) with keyhole (100) outside, with key insertion hole (2); Self-opening and closing blocking piece (3) is movably installed in the protective shell (1) and is used for blocking the key insertion hole (2).

2. A lock cylinder protection structure according to claim 1, wherein Also including: Guide cavity (4) is located between the key insertion hole (2) and the keyhole (100) of the lock head (200) in the protective shell (1); Support plate (5) is fixed in the guide cavity (4) and has guide hole (6) coaxial with the keyhole (100) outside the key insertion hole (2).

3. The lock head protection structure according to claim 2, wherein: The support plate (5) is provided with a plurality of bottom support plates (5) on the guide hole (6) of the closed circular, and the guide hole (6) of the rest support plate (5) is long strip-shaped, and the inner end is circular arc-shaped.

4. The lock head protection structure according to claim 3, wherein: The support plate (5) is provided with at least two plates.

5. The lock cylinder protection structure of claim 2, wherein The self-opening and closing blocking piece (3) includes: The rotating shaft (31) is rotatably installed at the top of the guide cavity (4); The cover plate (32) is fixed with the rotating shaft (31) through the turnover frame and can block the key insertion hole (2); The elastic member (33) is used for exerting the force on the turnover frame to the key insertion hole (2).

6. A lock cylinder protection structure according to claim 5, wherein The elastic member (33) includes: The helical torsional spring (331) is sleeved on the rotating shaft (31), both ends are provided with extension rods (332), one of the extension rods (332) is abutted with the bottom surface of the cover plate (32), and the other extension rod (332) is abutted with the inner wall of the guide cavity (4).

7. The lock cylinder protection structure of claim 1, wherein Also including: Lower hole (7) is arranged at the bottom end of the protective shell (1); The installation cavity (8) is arranged in the protective shell (1), and the top end is communicated with the guide cavity (4); A plurality of U-shaped clamping plates (9) are arranged in the installation cavity (8) at intervals; The installation cavity (8) is located between the lower hole (7) and the guide cavity (4).

8. The lock head protection structure according to claim 7, wherein: The protective shell (1) includes left and right two parts, and the left and right two parts of the protective shell (1) are connected with each other through the clamping structure.

9. A lock cylinder protection structure according to claim 8, wherein The clamping structure includes: A plurality of clamping columns are fixed on the left / right part of the protective shell (1); A plurality of clamping holes (10) are arranged on the right / left part of the protective shell (1); Wherein, each clamping column is inserted into the corresponding clamping hole (10) with interference.

10. A serpentine chain lock according to the lock head protection structure of claim 7, comprising a lock head (200), a keyhole (100), a lock core (300), a lock hole (400), a chain (500), a fixed end (600), and a movable end (700), characterized in that: The fixed end (600) and the movable end (700) are respectively fixed at two ends of the chain (500), the fixed end (600) is fixedly connected with the lock head (200) and extends out of the lower hole (7), the movable end (700) can be inserted into the lock hole (400) through the protective shell (1), and the chain (500) is sleeved with the flexible material sleeve (800) having ductility.

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