A blade anti-theft lock core

Abstract

The present invention discloses a blade anti-theft lock core, including a lock shell, a lock core and a side column. The lock core is provided with a plurality of lock core blade straight-through grooves, and each lock core blade straight-through groove is provided with an outer blade, an inner blade and a blade spring. The outer blade includes an upper outer blade and a lower outer blade, and the inner blade includes an upper inner blade and a lower inner blade. The blade spring includes an upper blade spring and a lower blade spring. The upper outer blade, the lower inner blade and the upper blade spring form a first blade group, and the lower outer blade, the upper inner blade and the lower blade spring form a second blade group. The first blade group and the second blade group form a whole in the lock core blade straight-through groove. The above technical scheme solves the defect that three blades or four blades share one spring in the prior art, and some blades are in a floating state without force when unlocking. The structural design is reasonable, the technical opening difficulty is increased, the key quantity is increased, the mutual opening rate is reduced, and it is safe, reliable and practical.

Description

Technical Field

[0001] The invention relates to the technical field of lock cores, and in particular to a blade anti-theft lock core. Background Art

[0002] Locks are an indispensable item in people's daily lives. Humans have been using locks to keep important items and prevent their belongings from being stolen since ancient times. The core anti-theft part of a lock is the lock core, and the performance of the lock core directly affects the anti-theft performance of the entire lock. There are many types of lock cores at present. Traditional mechanical pin locks and blade lock cores have been circulating in the market for many years, and the unlocking tools developed for them can be seen everywhere. The performance of the lock core has long failed to meet the anti-theft requirements.

[0003] In recent years, manufacturers have developed many lock cylinders with good performance to address this phenomenon. The most representative structure is the side column lock cylinder, especially the blade side column lock cylinder. The advantage of the blade side column lock cylinder over the pin side column lock cylinder is that the key quantity is much higher for the same lock cylinder length. The original blade side column lock cylinder had only one blade in the blade slot (blade storage bin) of the lock cylinder, and later it was increased to two and three. Among them, the more reasonable design is that the blade spring acts on the paired blades. If one of the blades is moved, the other blades will move at the same time. Among them, the more representative one is the structure in which three blades share one blade spring; but this structure also has a disadvantage: when unlocking, only two blades are affected by the blade spring, and the remaining blades will be in a springless state. The springless blades are very easy to open each other, and affect the anti-technical opening performance, which has certain quality and safety risks. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a blade anti-theft lock core with a reasonable structural design, increased technical opening difficulty and increased key quantity, reduced mutual opening rate, and safe and reliable.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a blade anti-theft lock core, comprising a lock shell, a lock core and a side column, the lock core is provided with a plurality of lock core blade straight-through grooves, each lock core blade straight-through groove is provided with an outer blade, an inner blade and a leaf spring, the outer blade comprises an upper outer blade and a lower outer blade, the inner blade comprises an upper inner blade and a lower inner blade, the leaf spring comprises an upper leaf spring and a lower leaf spring, the upper outer blade, the lower inner blade and the upper leaf spring constitute a first leaf group, the lower outer blade, the upper inner blade and the lower leaf spring constitute a second leaf group, the first leaf group and the second leaf group form a whole in the lock core blade straight-through groove.

[0006] The present invention is further configured such that when any one of the leaves in the first leaf group and the second leaf group is moved, the other three leaves and the leaf spring are moved as a whole at the same time.

[0007] The present invention is further configured such that: the side columns are square side columns or V-shaped side columns.

[0008] The present invention is further configured as follows: the upper outer blade and the lower outer blade both include an outer blade body, an outer blade key socket is provided in the outer blade body, an outer tooth matching boss is provided in the outer blade key socket, an outer blade compression spring boss is integrally provided at one end of the outer blade body, and an outer blade notch and an outer blade side column starting bevel are provided at the other end of the outer blade body.

[0009] The present invention is further configured as follows: the upper inner blade and the lower inner blade both include an inner blade body, an inner blade key jack is provided in the inner blade body, an inner blade compression spring boss is integrally provided at one end of the inner blade body, and an inner blade password slot is provided at the other end of the inner blade body.

[0010] The present invention is further configured as follows: a key is provided at one end of the lock core, and the key is provided with upper outer teeth, upper inner teeth, lower outer teeth and lower inner teeth, the upper outer teeth match the upper outer blades, the upper inner teeth match the upper inner blades, the lower outer teeth match the lower outer blades, and the lower inner teeth match the lower inner blades.

[0011] The present invention is further configured as follows: when the key is not inserted, one end of the upper leaf spring abuts against the outer leaf compression spring boss of the upper outer leaf, and the other end abuts against the inner leaf compression spring boss of the lower inner leaf; one end of the lower leaf spring abuts against the inner leaf compression spring boss of the upper inner leaf, and the other end abuts against the outer leaf compression spring boss of the lower outer leaf.

[0012] The present invention is further configured as follows: when the key is inserted, the upper outer blade compresses the upper blade spring downward to move, while the lower inner blade compresses the upper blade spring upward to move; the upper inner blade compresses the lower blade spring downward to move, while the lower outer blade compresses the lower blade spring upward to move.

[0013] The advantages of the present invention are: compared with the prior art, the structural setting of the present invention is more reasonable. Since the blade groove of the lock core is a straight-through groove, when any blade in the first blade group and the second blade group is moved, the other three blades and the blade spring all move as a whole at the same time. The advantage of this design is that each blade is stressed by the spring when unlocking, which solves the defect that some blades are floating and not stressed when unlocking because three blades or four blades share one spring, greatly improving the anti-theft performance of the lock core and the reliability of product quality; the structural design is reasonable, increases the technical opening difficulty and the number of keys, reduces the mutual opening rate, is safe and reliable, and has good practicality.

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an explosion diagram of the first embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of assembling the outer blade, the inner blade and the blade spring of the first embodiment of the present invention;

[0017] Figure 3 This is a schematic structural diagram of a soft-start outer blade according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic structural diagram of a bidirectional start-up type outer blade according to an embodiment of the present invention;

[0019] Figure 5 This is a schematic structural diagram of a hard-start type outer blade according to an embodiment of the present invention;

[0020] Figure 6 This is a schematic diagram of the structure of the inner blade of the first embodiment of the present invention;

[0021] Figure 7 This is a schematic diagram of the structure of the blade state when no key is inserted in the first embodiment of the present invention;

[0022] Figure 8 This is a schematic diagram of the structure of the blade movement principle when a key is inserted in the first embodiment of the present invention;

[0023] Fig. 9 This is a schematic diagram of the structure of a key according to an embodiment of the present invention;

[0024] Fig.10 This is a schematic diagram of the key teeth and blade position matching in the first embodiment of the present invention;

[0025] Fig.11 This is a schematic structural diagram of a square side column according to an embodiment of the present invention;

[0026] Fig.12 This is a schematic diagram of the structure of the outer blade of the second embodiment of the present invention;

[0027] Fig.13 This is a schematic diagram of the structure of the inner blade of the second embodiment of the present invention;

[0028] Fig.14 This is a schematic diagram of the structure of the blade state when no key is inserted in the second embodiment of the present invention;

[0029] Fig.15 This is a schematic diagram of the structure of the blade movement principle when a key is inserted in the second embodiment of the present invention;

[0030] Fig.16 It is a schematic structural diagram of a V-shaped side column according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0031] In the description of this embodiment, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore, cannot be understood as limiting the present invention. In addition, if the terms "first", "second", and "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] Embodiment 1

[0033] See also Figures 1 to 11 The present invention discloses a blade anti-theft lock core, comprising a lock shell 1, a lock core 2 and a side column 3. The lock core 2 is provided with a plurality of lock core blade straight-through grooves 21. Each lock core blade straight-through groove 21 is provided with an outer blade, an inner blade and a blade spring. The outer blade comprises an upper outer blade 4 and a lower outer blade 5. The inner blade comprises an upper inner blade 6 and a lower inner blade 7. The blade spring comprises an upper blade spring 8 and a lower blade spring 9. The upper outer blade 4, the lower inner blade 7 and the upper blade spring 8 constitute a first blade group. The lower outer blade 5, the upper inner blade 6 and the lower blade spring 9 constitute a second blade group. The first blade group and the second blade group form a whole in the lock core blade straight-through groove 21.

[0034] Preferably, the lock core 2 is provided with a side column groove identical to the lock core blade straight groove 21, the side column 3 is installed in the side column groove, the lock housing 1 is provided with a lock core cavity, and the lock core 2 is embedded in the lock core cavity. When any one of the blades in the first blade group and the second blade group is moved, the other three blades and the blade spring are moved as a whole at the same time.

[0035] In order to make the structural arrangement of the present invention more reasonable, preferably, the side column 3 described in this embodiment is a square side column or a V-shaped side column.

[0036] The upper outer blade 4 and the lower outer blade 5 both include an outer blade body 10, in which an outer blade key socket 101 is provided, in which an outer blade key socket 101 is provided an outer tooth matching boss 102, one end of the outer blade body 10 is integrally provided with an outer blade compression spring boss 103, and the other end of the outer blade body 10 is provided with an outer blade notch 104 and an outer blade side column starting bevel 105.

[0037] The upper inner blade 6 and the lower inner blade 7 both include an inner blade body 11, in which an inner blade key insertion hole 111 is arranged, an inner blade compression spring boss 112 is integrally arranged at one end of the inner blade body 11, and an inner blade password slot 113 is arranged at the other end of the inner blade body 11.

[0038] A key 12 is provided at one end of the lock core 2, and the key 12 is provided with an upper outer tooth flower 121, an upper inner tooth flower 122, a lower outer tooth flower 123 and a lower inner tooth flower 124. The upper outer tooth flower 121 matches the upper outer blade 4, the upper inner tooth flower 122 matches the upper inner blade 6, the lower outer tooth flower 123 matches the lower outer blade 5, and the lower inner tooth flower 124 matches the lower inner blade 7.

[0039] When the key 12 is not inserted, one end of the upper leaf spring 8 abuts against the outer leaf compression spring boss of the upper outer leaf 4, and the other end abuts against the inner leaf compression spring boss of the lower inner leaf 7; one end of the lower leaf spring 9 abuts against the inner leaf compression spring boss of the upper inner leaf 6, and the other end abuts against the outer leaf compression spring boss of the lower outer leaf 5.

[0040] When the key 12 is inserted, the upper outer blade 4 compresses the upper blade spring 8 downward to move, and at the same time, the lower inner blade 7 compresses the upper blade spring 8 upward to move; the upper inner blade 6 compresses the lower blade spring 9 downward to move, and at the same time, the lower outer blade 5 compresses the lower blade spring 9 upward to move.

[0041] The side column 3 of this embodiment is a square side column, and the shape and size of the outer blade notch 104 and the inner blade password notch 113 match the square side column. In the process of removing the key, the side column on the blade is used to start the bevel to push the side column out of the side column slot.

[0042] In actual application, since the blade groove of the lock core is a straight-through groove, when any blade in the first blade group and the second blade group is moved, the other three blades and the blade spring all move as a whole at the same time. The advantage of this design is that each blade is stressed by the spring when unlocking, which solves the defect that some blades are floating and not stressed when unlocking because of the existing three blades or four blades sharing one spring, greatly improving the anti-theft performance of the lock core and the reliability of product quality; the structural design is reasonable, increases the technical opening difficulty and the number of keys, reduces the mutual opening rate, is safe and reliable, and has good practicality.

[0043] Embodiment 2

[0044] See also Figures 12 to 16 The second embodiment is a structural improvement based on the above embodiment. The side column 3 adopts a V-shaped side column, and the shapes of the outer blade notch 104 and the inner blade password notch 113 are set to a V-groove shape matching the side column 3.

[0045] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. A blade anti-theft lock core, comprising a lock housing (1), a lock core (2) and a side column (3), characterized in that: The lock core (2) is provided with a plurality of lock core blade straight-through grooves (21), each of which is provided with an outer blade, an inner blade and a blade spring, the outer blade comprising an upper outer blade (4) and a lower outer blade (5), the inner blade comprising an upper inner blade (6) and a lower inner blade (7), the blade spring comprising an upper blade spring (8) and a lower blade spring (9), the upper outer blade (4), the lower inner blade (7) and the upper blade spring (8) forming a first blade group, the lower outer blade (5), the upper inner blade (6) and the lower blade spring (9) forming a second blade group, the first blade group and the second blade group forming a whole in the lock core blade straight-through groove (21); The side column (3) is a square side column or a V-shaped side column; The upper outer blade (4) and the lower outer blade (5) both comprise an outer blade body (10), an outer blade key insertion hole (101) is arranged in the outer blade body (10), an outer tooth matching boss (102) is arranged in the outer blade key insertion hole (101), an outer blade compression spring boss (103) is integrally arranged at one end of the outer blade body (10), and an outer blade notch (104) and an outer blade side column starting bevel (105) are arranged at the other end of the outer blade body (10); The upper inner blade (6) and the lower inner blade (7) both comprise an inner blade body (11), an inner blade key insertion hole (111) is provided in the inner blade body (11), an inner blade compression spring boss (112) is integrally provided at one end of the inner blade body (11), and an inner blade password slot (113) is provided at the other end of the inner blade body (11); A key (12) is provided at one end of the lock core (2); the key (12) is provided with an upper outer tooth flower (121), an upper inner tooth flower (122), a lower outer tooth flower (123) and a lower inner tooth flower (124); the upper outer tooth flower (121) matches the upper outer blade (4), the upper inner tooth flower (122) matches the upper inner blade (6), the lower outer tooth flower (123) matches the lower outer blade (5), and the lower inner tooth flower (124) matches the lower inner blade (7); When the key (12) is not inserted, one end of the upper leaf spring (8) abuts against the outer leaf compression spring boss of the upper outer leaf (4), and the other end abuts against the inner leaf compression spring boss of the lower inner leaf (7); one end of the lower leaf spring (9) abuts against the inner leaf compression spring boss of the upper inner leaf (6), and the other end abuts against the outer leaf compression spring boss of the lower outer leaf (5).

2. A blade anti-theft lock core according to claim 1, characterized in that: When the key (12) is inserted, the upper outer blade (4) compresses the upper blade spring (8) downwards and moves, while the lower inner blade (7) compresses the upper blade spring (8) upwards and moves; the upper inner blade (6) compresses the lower blade spring (9) downwards and moves, while the lower outer blade (5) compresses the lower blade spring (9) upwards and moves.

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