A lock core

Abstract

The present invention relates to a lock core, which includes a lock shell, a rotatable lock core is inserted into the first end of the mounting hole of the lock shell, the lock core is connected to a dial head, the dial head is provided with a left cavity and a right cavity that are interconnected, and a first slot is provided on the inner wall of the left cavity; the lock core is provided with an inserting portion extending axially, and a second slot is provided on the end side wall of the inserting portion; a right connecting piece is provided between the dial head and the lock core, and a right convex rib extending along the axial direction is provided on the outer peripheral wall of the right connecting piece; the inserting portion is inserted into the right cavity, and the right convex rib can fall into the first slot and the second slot at the same time. The advantage of the present invention is that compared with the existing structure, by providing the inserting portion in the lock core and inserting it into the right cavity, the effective length of the blade slot provided in the lock core can be effectively increased, and more blade slots can be added under the same lock core length, thereby increasing the password level of the lock core, increasing the key quantity and reducing the mutual opening rate.

Description

Technical Field

[0001] The invention relates to a lock core. Background Art

[0002] The existing lock core includes a lock shell, a first end of the mounting hole of the lock shell is inserted with a rotatable lock core, the lock core is connected to a dial head, the lock core is provided with a blade groove, each blade groove is provided with a blade, in the locked state, the blade will prevent the lock core from rotating relative to the lock shell, and the dial head cannot rotate at the same time, when the correct key is inserted into the lock core, each blade will be pushed to the unlocking position, the blade cannot prevent the lock core from rotating relative to the lock shell, and the dial head can rotate with the rotation of the lock core. Therefore, the decoding level of a lock core is related to the number of blade grooves it has. The higher the number of blade grooves, the higher the decoding level of the lock core, and the less likely it is to be cracked. However, due to the length of the lock core, the length of the lock core can only be limited, resulting in the number of blade grooves that can be formed by a lock core is also limited. In order to meet the existing conditions, how to improve the password level of the lock core is a goal that people have been pursuing. Summary of the invention

[0003] The object of the present invention is to provide a lock core with a higher password level.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A lock core comprises a lock shell, wherein a rotatable lock core is inserted into the first end of a mounting hole of the lock shell, the lock core is connected to a dial head, the dial head is provided with a left cavity and a right cavity which are connected to each other, and a first slot is provided on the inner wall of the left cavity; an inserting portion is axially extended to the lock core, and a second slot is provided on the end side wall of the inserting portion; a right connecting piece is provided between the dial head and the lock core, and a right convex rib extending along the axial direction is provided on the outer peripheral wall of the right connecting piece; the inserting portion is inserted into the right cavity, and the right convex rib can fall into the first slot and the second slot at the same time.

[0006] The advantage of the present invention is that compared with the existing structure, by providing an inserting part on the lock core and inserting it into the right cavity, the effective length of the blade groove set in the lock core can be effectively increased. Under a fixed lock core length, more blade grooves can be added, thereby increasing the password level of the lock core. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of the overall three-dimensional structure of the lock core in the embodiment.

[0008] Figure 2 2 is a schematic diagram of the structure of the lock core in the exploded state in the embodiment.

[0009] Figure 3 It is a schematic diagram of the structure of the disassembled state of the lock core in another viewing angle in the embodiment.

[0010] Figure 4 It is a schematic cross-sectional view of the lock core in the embodiment (when unlocked manually by twisting the key or driven to unlock by an electronic device).

[0011] Figure 5 It is a cross-sectional structural schematic diagram of the lock core in the embodiment (when the key is unlocked). DETAILED DESCRIPTION

[0012] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0013] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0014] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0015] In the description of the present invention, unless otherwise clearly defined, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0016] As attached Figure 1 To Attachment Figure 3 As shown, a lock core includes a lock shell 1, a rotatable lock core 2 is inserted into the first end of the mounting hole 11 of the lock shell 1, and the lock core 2 is connected to a dial head 3.

[0017] The dial head 3 is provided with a left cavity 31 and a right cavity 32 which are connected to each other, and the depth of the right cavity 32 is greater than that of the left cavity 31. A first slot 311 is provided on the inner wall of the left cavity 31; the lock core 2 is provided with an inserting portion 21 extending axially, and a second slot 211 is provided on the end side wall of the inserting portion 21; a right connecting piece 4 is provided between the dial head 3 and the lock core 2, and a right rib 41 extending along the axial direction is provided on the outer peripheral wall of the right connecting piece 4. Specifically, there is a pair of right ribs 41 which are symmetrically provided on the outer peripheral wall of the right connecting piece 4; the first slot 311 is two slots symmetrically provided on the inner wall of the left cavity 31 and provided for the two right ribs 41 to be clamped, and the second slot 211 is two slots symmetrically provided on the side wall of the inserting portion 21 and provided for the two right ribs 41 to be clamped. The plug-in portion 21 is inserted into the right cavity 32, and the right rib 41 can fall into the first slot 311 and the second slot 211 at the same time. At this time, the rotation of the lock core 2 can drive the rotation of the dial head 3 to realize the unlocking function. Figure 5 shown.

[0018] Compared with the existing structure, by providing an inserting portion 21 on the lock core 2 and inserting it into the right cavity 32, the effective length of the blade groove 22 provided on the lock core 2 can be effectively increased. Under a fixed lock core length, more blade grooves 22 can be added, thereby increasing the password level of the lock core. The lock core 2 can be provided with at least six blade grooves 22, and each blade groove 22 is provided with a blade, which greatly increases the password level of the lock core.

[0019] One end of the lock core outside the door is for key unlocking and the other end inside the door is for manual unlocking with a twist key or unlocking by an electronic device. Therefore, in order to achieve this function, a rotatable connecting sleeve 5 is inserted into the second end of the mounting hole 11 of the lock housing 1, and a connecting rod 6 is butt-connected to the left end of the connecting sleeve 5. The connecting rod 6 can be connected to a twist key for manual unlocking or connected to an electronic device for electronic unlocking.

[0020] A left connecting piece 7 is provided at the right end of the connecting sleeve 5. Specifically, a third groove 51 is provided on the inner wall of the right end of the connecting sleeve 5. A left convex rib 71 extending along the axial direction is provided on the outer peripheral wall of the left connecting piece 7. The left convex rib 71 has a pair of symmetrically arranged on the outer peripheral wall of the left connecting piece 7 and corresponding to the two grooves of the first groove 311.

[0021] The right end of the connecting sleeve 5 and the left end of the left connecting member 7 are provided with a first elastic member 81, which can be a tower spring. Under the action of the first elastic member 81, the right end of the left connecting member 7 keeps against the left end of the right connecting member 4 and makes the left convex rib 71 fall into the first slot 311 and the third slot 51 at the same time while the right convex rib 41 is out of the first slot 311. In this state, the rotation of the lock core 2 cannot drive the rotation of the dial head 3, and the rotation of the dial head 3 can only be driven by the rotation of the left connecting member 7, that is, the lock is manually unlocked by a twist key or unlocked by an electronic device. As shown in the attached figure Figure 4 shown.

[0022] The right connecting member 4 is provided with an axially extending right shaft hole 42 in a stepped shape, and a top shaft 9 is sleeved with a second elastic member 82 and then inserted into the right shaft hole 42 and connected to the right connecting member 4. An abutment top portion 91 is provided at one end of the top shaft 9 away from the right shaft hole 42 where it is inserted, and one end of the second elastic member 82 abuts against the abutment top portion 91 and the other end abuts against the step surface of the right shaft hole 42. When the key 100 is inserted into the lock core 2 until it is unlocked, one end of the key 100 acts on the abutment top portion 91 of the top shaft 9 to push the top shaft 9 to act on the left connecting member 7, so that the left convex rib 71 leaves the first slot 311 and the right convex rib 41 falls into the first slot 311 and the second slot 211 at the same time. The rotation of the lock core 2 can drive the rotation of the dial head 3 to realize the unlocking function, that is, the key unlocking function. The second elastic member 82 is a compression spring. As shown in the attached figure Figure 5 shown.

[0023] The left connecting piece 7 is provided with an axially extending left axial hole 72, and one end of the top shaft 9 inserted into the right axial hole 42 is axially extended with a docking shaft 92, the diameter of the docking shaft 92 is smaller than the diameter of the top shaft 9 and is inserted into the left axial hole 72, when the top part 91 pushes the top shaft 9, the end face 93 of the top shaft 9 acts on the left connecting piece 7.

[0024] The left shaft hole 72 is a stepped hole. The docking shaft 92 is inserted from the end with a smaller diameter of the left shaft hole 72 and extends into the end with a larger diameter. One end of the first elastic member 81 is sleeved on the docking shaft 92 and abuts against the step surface of the left shaft hole 72 .

[0025] The above embodiments are preferred implementations of the present invention, but the implementations of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention are equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A lock core, comprising a lock housing, a rotatable lock core being inserted into a first end of a mounting hole of the lock housing, and a dial head being connected to the lock core, characterized in that: The dial head is provided with a left cavity and a right cavity which are connected to each other, and a first groove is provided on the inner wall of the left cavity; the lock gall is axially extended to be provided with an inserting portion, and the end side wall of the inserting portion is provided with a second groove; a right connecting piece is provided between the dial head and the lock gall, and the outer peripheral wall of the right connecting piece is provided with a right convex rib extending along the axial direction; the inserting portion is inserted into the right cavity, and the right convex rib can fall into the first groove and the second groove at the same time, and the depth of the right cavity is greater than the depth of the left cavity; the second end of the mounting hole of the lock shell is inserted with a rotatable connecting sleeve, the left end of the connecting sleeve is butt-connected with a connecting rod, the inner wall of the right end of the connecting sleeve is provided with a third groove, the right end of the connecting sleeve is provided with a left connecting piece, and the outer peripheral wall of the left connecting piece is provided with a left convex rib extending along the axial direction, and the right end of the connecting sleeve and the left end of the left connecting piece are provided with a first elastic piece, and under the action of the first elastic piece, the right end of the left connecting piece keeps against the left end of the right connecting piece and makes the left convex rib fall into the first groove and the third groove at the same time while the right convex rib is out of the state of the first groove.

2. A lock core according to claim 1, characterized in that: There is a pair of right ribs which are symmetrically arranged on the outer wall of the right connecting piece; the first grooves are symmetrically arranged on the inner wall of the left cavity and are two grooves for the two right ribs to be clamped, and the second grooves are symmetrically arranged on the side wall of the plug-in part and are two grooves for the two right ribs to be clamped.

3. A lock core according to claim 1, characterized in that: The lock core is provided with at least a plurality of blade grooves, and each blade groove is provided with a blade.

4. A lock core according to any one of claims 1 to 3, characterized in that: The left convex ribs have a pair of symmetrically arranged on the outer peripheral wall of the left connecting member and correspond to the two grooves of the first groove.

5. A lock core according to any one of claims 1 to 3, characterized in that: The right connecting piece is provided with an axially extending right shaft hole in a stepped shape, a top shaft is sleeved with a second elastic piece and then inserted into the right shaft hole and connected to the right connecting piece, an abutment top is provided at one end of the top shaft away from the right shaft hole, one end of the second elastic piece abuts against the abutment top and the other end abuts against the step surface of the right shaft hole; when the key is inserted into the lock core until it is unlocked, one end of the key acts on the abutment top of the top shaft to push the top shaft to act on the left connecting piece, so that the left convex rib leaves the first slot and the right convex rib falls into the first slot and the second slot at the same time.

6. A lock core according to claim 5, characterized in that: The left connecting piece is provided with an axially extending left axial hole, and one end of the top shaft inserted into the right axial hole is axially extended with a docking shaft. The diameter of the docking shaft is smaller than the diameter of the top shaft and is inserted into the left axial hole. When the top shaft is pushed against the top, the end face of the top shaft acts on the left connecting piece.

7. A lock core according to claim 6, characterized in that: The left shaft hole is a stepped hole, the docking shaft is inserted from the end with a smaller diameter of the left shaft hole and extends into the end with a larger diameter, one end of the first elastic member is sleeved on the docking shaft and abuts against the step surface of the left shaft hole.

8. A lock core according to claim 7, characterized in that: The first elastic member is a tower spring, and the second elastic member is a compression spring.

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