Lock cylinder structure and door lock

Abstract

The utility model relates to the technical field of locks, and discloses a lock cylinder structure and a door lock, the lock cylinder structure comprises a lock head body, one axial end of the lock head body is provided with a first lock shell part, the inner side peripheral wall of the first lock shell part is enclosed to form a first accommodating cavity, and the first accommodating cavity is suitable for accommodating a lock liner; the anti-explosion piece is arranged in the first containing cavity, and the anti-explosion piece is suitable for freely rotating when the lock cylinder structure is forcedly twisted; a limiting part is arranged at one axial end of the first lock shell part, and the limiting part is formed by extending the inner side peripheral wall of the first lock shell part in the radial direction in the direction close to the axis of the first lock shell part. The limiting part is arranged at the end, away from the lock cylinder in the axial direction, of the anti-explosion piece and suitable for axially limiting the anti-explosion piece. According to the lock cylinder structure provided by the utility model, when the lock cylinder encounters external strong torsion, the anti-explosion piece can rotate freely so as to achieve the purpose of torsion resistance, and when the lock cylinder is fractured, the anti-explosion piece can prevent the fractured part of the lock cylinder from being taken out or falling out, so that the reliability and the safety of the lock cylinder structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to a lock core structure and a door lock. Background Art

[0002] The existing lock cylinder is generally assembled directly from the outside to the inside. When the lock cylinder is opened by strong twisting and violent destruction, the lock cylinder is easily damaged, and the broken part of the lock cylinder and internal parts are easily taken out, and the reliability and safety need to be improved. Utility Model Content

[0003] In view of this, the utility model provides a lock core structure and a door lock to solve the problem that the lock core of the existing lock is easily damaged when the lock core is violently twisted to open, and the broken part and internal parts of the lock core are easily taken out.

[0004] In a first aspect, the utility model provides a lock core structure, comprising:

[0005] The lock body has a first lock housing portion at one axial end thereof, and the inner peripheral wall of the first lock housing portion encloses a first accommodating cavity, and the first accommodating cavity is suitable for accommodating the lock core;

[0006] The explosion-proof disk is built into the first accommodating cavity; the explosion-proof disk is arranged at one axial end of the lock core, and the explosion-proof disk is suitable for freely rotating when the lock core structure is strongly twisted;

[0007] A limiting portion is provided at one axial end of the first lock shell portion, and the limiting portion is extended radially from the inner circumferential wall of the first lock shell portion toward the axial direction close to the first lock shell portion; the limiting portion is provided at one end of the explosion-proof plate axially away from the lock core, and the limiting portion is suitable for axially limiting the explosion-proof plate.

[0008] Beneficial effect: The lock core structure provided by the utility model, on the one hand, when the lock core encounters strong external torsion, the explosion-proof plate can rotate freely, thereby achieving the purpose of torsion resistance; on the other hand, since the lock core is assembled from the inner end to the outer end, and the explosion-proof plate is axially limited by the limiting part, when the lock core breaks, the explosion-proof plate can prevent the broken part of the lock core from being taken out or falling out, thereby improving the reliability and safety of the lock core structure.

[0009] In an optional embodiment, a first step portion is formed at one end of the explosion-proof plate axially close to the lock core, one axial end of the first step portion is suitable for abutting against the lock core, and the other end is suitable for abutting against one side of the limiting portion axially close to the lock core.

[0010] Beneficial effect: By providing a first step portion at one end of the explosion-proof piece axially close to the lock core, the first step portion is axially abutted against the limiting portion, thereby preventing the explosion-proof piece from detaching from the first accommodating cavity axially away from the lock core, thereby preventing the lock core and its broken parts from being taken out or falling out, thereby improving the reliability and safety of the lock core structure.

[0011] In an optional embodiment, the inner peripheral wall of the limiting portion encloses a first limiting groove; the explosion-proof plate forms a second step portion at one end axially away from the lock core, and the second step portion is clamped with the first limiting groove.

[0012] Beneficial effect: The second step portion is engaged with the first limiting groove to further limit the explosion-proof plate, which is beneficial to ensure that the explosion-proof plate and the lock core are always in a coaxial state during the rotation process in the first accommodating chamber.

[0013] In an optional embodiment, the explosion-proof disk is provided with an insertion opening along the axial direction, and the insertion opening is suitable for guiding the key into the lock cylinder.

[0014] Beneficial effect: The normal opening function of the lock core is maintained under the premise that the explosion-proof plate prevents the broken part of the lock core from being taken out or falling out.

[0015] In an optional embodiment, the lock core structure further includes a dial wheel, and the dial wheel is coaxially arranged with the lock core;

[0016] A second lock housing portion is provided at the other axial end of the lock body, and a second limiting groove is formed between the second lock housing portion and the first lock housing portion along the axial interval, and the second limiting groove is suitable for axially limiting the dial wheel.

[0017] Beneficial effect: The second limiting groove limits the axial position of the thumbwheel, thereby preventing the thumbwheel from axially deviating during operation.

[0018] In an optional embodiment, a first socket slot is provided at one end of the thumbwheel axially close to the lock core; a first socket portion is provided at one end of the lock core axially close to the thumbwheel, and the first socket portion is suitable for being inserted into the first socket slot;

[0019] The inner peripheral wall of the second lock housing portion encloses a second accommodating cavity; the lock core structure also includes a plug, and one axial end of the plug is built into the second accommodating cavity;

[0020] A second socket slot is provided at one end of the thumbwheel axially close to the plug; a second socket portion is provided at one end of the plug axially close to the thumbwheel, and the second socket portion is suitable for being inserted into the second socket slot.

[0021] Beneficial effect: the thumbwheel is arranged between the second lock shell part and the first lock shell part, the first socket part of the lock core is inserted into the first socket slot of the thumbwheel, and the second socket part of the plug is inserted into the second socket slot of the thumbwheel to radially limit the thumbwheel.

[0022] In an optional embodiment, the lock core structure also includes a gasket, which is coaxially arranged with the second socket portion, and the gasket is arranged between the second lock shell portion and the dial wheel. One axial end of the gasket abuts against the end face of the second lock shell portion, and the other end is suitable for axially limiting the dial wheel.

[0023] Beneficial effect: In order to facilitate the assembly of the thumbwheel, during the assembly process, after the first socket portion of the lock core is inserted into the first socket slot of the thumbwheel, a gasket can be set between the second lock shell portion and the thumbwheel to limit the axial displacement of the thumbwheel, and then the plug is inserted into the second accommodating cavity from a side port of the second accommodating cavity close to the inner end, and the plug passes through the gasket until the second socket portion of the plug is inserted into the second socket slot of the thumbwheel.

[0024] In an optional embodiment, a first slot is formed at one end of the lock core close to the dial wheel along the axial direction;

[0025] The lock core structure also includes a first retaining spring, which is clamped in the first retaining groove. One axial end of the first retaining spring is suitable for abutting against the end face of the first lock housing part axially close to one end of the dial wheel, and the other end is suitable for abutting against the end face of one axial end of the dial wheel.

[0026] Beneficial effect: During the assembly process, the first retaining spring is clamped in the first retaining groove, so that the end of the dial wheel close to the lock core is axially limited by the first retaining spring.

[0027] In an optional embodiment, a second slot is formed at one end of the plug axially close to the thumbwheel;

[0028] The lock core structure also includes a second retaining spring, which is clamped in the second retaining groove. One axial end of the second retaining spring is suitable for abutting against the gasket, and the other end is suitable for abutting against the end surface of the other axial end of the dial wheel.

[0029] Beneficial effect: During the assembly process, the second retaining spring is clamped in the second retaining groove, and one axial end of the second retaining spring abuts against the gasket, and the other end abuts against the end face of the other axial end of the dial wheel, so that the second retaining spring axially limits the end of the dial wheel close to the plug, thereby completing the assembly of the dial wheel on the lock body and between the lock core and the plug.

[0030] In a second aspect, the utility model further provides a door lock, comprising: a door lock body, and a lock core structure as described above.

[0031] Beneficial effects: The door lock of the second aspect includes the lock core structure of the first aspect, and therefore, the door lock of the second aspect includes all the beneficial effects of the lock core structure of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A cross-sectional view of a lock core structure according to an embodiment of the utility model;

[0034] Figure 2 A cross-sectional view of a lock body of a lock core structure according to an embodiment of the utility model;

[0035] Figure 3 A cross-sectional view of a lock core of a lock core structure according to an embodiment of the utility model;

[0036] Figure 4 A cross-sectional view of an explosion-proof disk of a lock core structure according to an embodiment of the utility model;

[0037] Figure 5 A cross-sectional view of a thumbwheel of a lock core structure according to an embodiment of the utility model;

[0038] Figure 6 A cross-sectional view of a plug of a lock core structure according to an embodiment of the utility model;

[0039] Figure 7 It is a schematic diagram of assembling a lock core and an explosion-proof disk of a lock core structure on a lock body according to an embodiment of the utility model;

[0040] Figure 8 It is a schematic diagram of assembling a lock core, an explosion-proof plate and a dial wheel on a lock body of a lock core structure of an embodiment of the utility model;

[0041] Fig. 9 It is a schematic diagram of assembling a lock core, an explosion-proof plate, a dial wheel, a gasket and a first retaining spring on a lock body of a lock core structure of an embodiment of the utility model;

[0042] Fig.10 This is a schematic diagram of the assembly of a lock core, explosion-proof plate, dial wheel, gasket and plug, as well as a first retaining spring and a second retaining spring on a lock body of a lock core structure of an embodiment of the utility model.

[0043] Description of reference numerals:

[0044] 10. Lock body; 11. First lock housing; 111. First accommodating cavity; 112. Limiting portion; 113. First limiting groove; 12. Second lock housing; 121. Second accommodating cavity; 13. Second limiting groove;

[0045] 20. Lock core; 21. First socket portion; 22. First slot;

[0046] 30. explosion-proof disk; 31. first step portion; 32. second step portion; 33. insertion port;

[0047] 40. thumbwheel; 41. first socket; 42. second socket;

[0048] 50. plug; 51. second socket portion; 52. second slot;

[0049] 60. Gasket;

[0050] 71. First retaining spring; 72. Second retaining spring. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0052] Combine the following Figures 1 to 10 , describing an embodiment of the utility model.

[0053] According to an embodiment of the present utility model, on the one hand, a lock core structure is provided, comprising:

[0054] Lock body 10, see Figure 1 As shown, a first lock housing portion 11 is provided at one axial end thereof, please combine Figure 2 As shown, the inner peripheral wall of the first lock housing portion 11 encloses a first accommodating cavity 111, and the first accommodating cavity 111 is suitable for accommodating the lock core 20;

[0055] The explosion-proof disc 30 is built into the first accommodating chamber 111; the explosion-proof disc 30 is arranged at one axial end of the lock core 20, and the explosion-proof disc 30 is suitable for freely rotating when the lock core structure is strongly twisted, so as to achieve the purpose of anti-twist;

[0056] A limiting portion 112 is provided at one axial end of the first lock shell portion 11, and the limiting portion 112 is formed by the inner circumferential wall of the first lock shell portion 11 extending radially toward the axial direction of the first lock shell portion 11; the limiting portion 112 is provided at one end of the explosion-proof plate 30 axially away from the lock core 20, and the limiting portion 112 is suitable for axially limiting the explosion-proof plate 30. When the lock core 20 is broken, the explosion-proof plate 30 can prevent the broken part of the lock core 20 from being taken out or falling out.

[0057] Furthermore, the limiting portion 112 and the first lock housing portion 11 may be an integrally formed structure.

[0058] Please note that, see Figure 2 As shown, the limiting portion 112 is disposed on one side of the lock body 10 close to the outer end; see Figure 7 As shown, during the assembly process, the explosion-proof plate 30 can be first inserted into the first accommodating cavity 111 from a side port of the first accommodating cavity 111 close to the inner end, until the explosion-proof plate 30 abuts against the limiting portion 112, and then the lock core 20 can be inserted into the first accommodating cavity 111 from a side port of the first accommodating cavity 111 close to the inner end, until the lock core 20 abuts against the explosion-proof plate 30, thereby realizing the assembly of the lock core 20 from the inner end to the outer end.

[0059] The lock core structure provided by the utility model, on the one hand, when the lock core 20 encounters strong external torsion, the explosion-proof plate 30 can rotate freely, thereby achieving the purpose of torsion resistance; on the other hand, since the lock core 20 is assembled from the inner end to the outer end, and the explosion-proof plate 30 is axially limited by the limiting portion 112, when the lock core 20 is broken, the explosion-proof plate 30 can prevent the broken part of the lock core 20 from being taken out or falling out, thereby improving the reliability and safety of the lock core structure.

[0060] In some embodiments, see Figure 4 As shown, the explosion-proof disc 30 forms a first step portion 31 at one end of the axial direction close to the lock core 20. Figure 7 As shown, one axial end of the first step portion 31 is suitable for abutting against the lock core 20, and the other end is suitable for abutting against a side of the limiting portion 112 axially close to the lock core 20.

[0061] Furthermore, the outer peripheral wall of the first step portion 31 is gap-matched with the inner rear wall of the first accommodating cavity 111 .

[0062] In this embodiment, a first step portion 31 is provided at one end of the explosion-proof piece 30 axially close to the lock core 20, so that the first step portion 31 is axially abutted against the limiting portion 112, thereby preventing the explosion-proof piece 30 from escaping from the first accommodating cavity 111 axially away from the lock core 20, thereby preventing the lock core 20 and its broken parts from being taken out or falling out, thereby improving the reliability and safety of the lock core structure.

[0063] In some embodiments, see Figure 2 As shown, the inner peripheral wall of the limiting portion 112 encloses a first limiting groove 113; Figure 4 and Figure 7 As shown, a second step portion 32 is formed at one end of the explosion-proof plate 30 axially away from the lock core 20 , and the second step portion 32 is engaged with the first limiting groove 113 .

[0064] Furthermore, the outer peripheral wall of the second step portion 32 is gap-matched with the inner rear wall of the first limiting groove 113 .

[0065] In this embodiment, the second step portion 32 is engaged with the first limiting groove 113 to further limit the explosion-proof plate 30, which is beneficial to ensure that the explosion-proof plate 30 and the lock core 20 are always in a coaxial state during the rotation process in the first accommodating chamber 111.

[0066] In some embodiments, see Figure 4 As shown, the explosion-proof plate 30 is provided with an insertion port 33 along the axial direction, and the insertion port 33 is suitable for guiding the key into the lock core 20, so as to maintain the normal opening function of the lock core 20 under the premise that the explosion-proof plate 30 prevents the broken part of the lock core 20 from being taken out or falling out.

[0067] In some embodiments, see Figure 1 As shown, the lock core structure further includes a dial wheel 40, which is coaxially arranged with the lock core 20;

[0068] Please combine Figure 2 and Figure 8 As shown, a second lock housing portion 12 is provided at the other axial end of the lock body 10, and a second limiting groove 13 is formed axially between the second lock housing portion 12 and the first lock housing portion 11, and the second limiting groove 13 is suitable for axially limiting the dial wheel 40, thereby preventing the dial wheel 40 from axially offset during operation.

[0069] In some embodiments, see Figure 5 As shown, the first socket 41 is formed at one end of the dial wheel 40 axially close to the lock core 20; see Figure 3 As shown, the end of the lock core 20 close to the thumbwheel 40 along the axial direction is provided with a first socket 21. Fig.10 As shown, the first socket portion 21 is suitable for being inserted into the first socket slot 41;

[0070] See also Figure 2 As shown, the inner peripheral wall of the second lock shell portion 12 encloses a second accommodating cavity 121; Fig.10 As shown, the lock core structure further includes a plug 50, and one axial end of the plug 50 is built into the second accommodating cavity 121;

[0071] Please see again Figure 5 As shown, the thumbwheel 40 has a second socket 42 at one end thereof axially close to the plug 50; see Figure 6 As shown, the plug 50 is provided with a second socket portion 51 at one end thereof close to the thumbwheel 40 in the axial direction. Fig.10 As shown, the second socket portion 51 is suitable for being inserted into the second socket slot 42 .

[0072] In this embodiment, the dial wheel 40 is arranged between the second lock shell part 12 and the first lock shell part 11, the first socket part 21 of the lock core 20 is inserted into the first socket slot 41 of the dial wheel 40, and the second socket part 51 of the plug 50 is inserted into the second socket slot 42 of the dial wheel 40 to radially limit the dial wheel 40.

[0073] In some embodiments, see Fig.10 As shown, the lock core structure also includes a gasket 60, which is coaxially arranged with the second socket portion 51, and is arranged between the second lock housing portion 12 and the dial wheel 40. One axial end of the gasket 60 abuts against the end surface of the second lock housing portion 12, and the other end is suitable for axially limiting the dial wheel 40.

[0074] Please note that, see Fig. 9 As shown, in order to facilitate the assembly of the thumbwheel 40, during the assembly process, after the first socket portion 21 of the lock core 20 is inserted into the first socket slot 41 of the thumbwheel 40, a gasket 60 can be set between the second lock shell portion 12 and the thumbwheel 40 to limit the axial displacement of the thumbwheel 40, and then the plug 50 is inserted into the second accommodating cavity 121 from a side port close to the inner end of the second accommodating cavity 121, and the plug 50 passes through the gasket 60 until the second socket portion 51 of the plug 50 is inserted into the second socket slot 42 of the thumbwheel 40.

[0075] In some embodiments, see Figure 3 As shown, a first slot 22 is formed at one end of the lock core 20 axially close to the dial wheel 40;

[0076] Please combine Fig. 9 As shown, the lock core structure also includes a first retaining spring 71, which is clamped in the first retaining groove 22, and one axial end of the first retaining spring 71 is suitable for abutting against the end face of the first lock housing part 11 axially close to one end of the dial wheel 40, and the other end is suitable for abutting against the end face of one axial end of the dial wheel 40.

[0077] It should be noted that, during the assembly process, the first retaining spring 71 is engaged in the first retaining groove 22 , so that the first retaining spring 71 is used to axially limit the end of the dial wheel 40 axially close to the lock core 20 .

[0078] In some embodiments, see Figure 6 As shown, a second slot 52 is formed at one end of the plug 50 axially close to the dial wheel 40;

[0079] Please combine Fig.10 As shown, the lock core structure also includes a second retaining spring 72, which is clamped in the second retaining groove 52, and one axial end of the second retaining spring 72 is suitable for abutting against the gasket 60, and the other end is suitable for abutting against the end surface of the other axial end of the dial wheel 40.

[0080] It should be noted that during the assembly process, the second retaining spring 72 is clamped in the second retaining groove 52, and one axial end of the second retaining spring 72 abuts against the gasket 60, and the other end abuts against the end face of the other axial end of the dial wheel 40, thereby axially limiting the end of the dial wheel 40 axially close to the plug 50 through the second retaining spring 72, thereby completing the assembly of the dial wheel 40 on the lock body 10 and between the lock core 20 and the plug 50.

[0081] According to an embodiment of the present utility model, on the other hand, a door lock is provided, comprising: a door lock body, and the lock core structure as described above.

[0082] The door lock in the present embodiment includes the lock core structure described above, and therefore, the door lock in the present embodiment includes all the beneficial effects of the lock core structure described above.

[0083] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A lock core structure, characterized in that: include: The lock body (10) has a first lock housing portion (11) disposed at one axial end thereof, the inner peripheral wall of the first lock housing portion (11) enclosing a first accommodating cavity (111), and the first accommodating cavity (111) is suitable for accommodating a lock core (20); An explosion-proof disc (30) is built into the first accommodating cavity (111); the explosion-proof disc (30) is arranged at one axial end of the lock core (20), and the explosion-proof disc (30) is suitable for freely rotating when the lock core structure is forcibly twisted; A limiting portion (112) is provided at one axial end of the first lock shell portion (11), and the limiting portion (112) is formed by the inner peripheral wall of the first lock shell portion (11) extending radially toward the axial direction of the first lock shell portion (11); the limiting portion (112) is provided at one end of the explosion-proof plate (30) axially away from the lock core (20), and the limiting portion (112) is suitable for axially limiting the explosion-proof plate (30).

2. The lock core structure according to claim 1, characterized in that: The explosion-proof plate (30) forms a first step portion (31) at one end axially close to the lock core (20), and one axial end of the first step portion (31) is suitable for abutting against the lock core (20), and the other end is suitable for abutting against one side of the limiting portion (112) axially close to the lock core (20).

3. The lock core structure according to claim 2, characterized in that: The inner peripheral wall of the limiting portion (112) encloses a first limiting groove (113); the explosion-proof plate (30) forms a second step portion (32) at one end axially away from the lock core (20), and the second step portion (32) is snap-fitted with the first limiting groove (113).

4. The lock core structure according to claim 1, characterized in that: The explosion-proof disc (30) is provided with an insertion opening (33) along the axial direction, and the insertion opening (33) is suitable for guiding the key into the lock core (20).

5. The lock core structure according to any one of claims 1 to 4, characterized in that: The lock core structure further comprises a dial wheel (40), wherein the dial wheel (40) is coaxially arranged with the lock core (20); A second lock housing portion (12) is provided at the other axial end of the lock body (10), and a second limiting groove (13) is formed between the second lock housing portion (12) and the first lock housing portion (11) along the axial direction, and the second limiting groove (13) is suitable for axially limiting the dial wheel (40).

6. The lock core structure according to claim 5, characterized in that: A first socket slot (41) is provided at one end of the thumbwheel (40) close to the lock core (20) in the axial direction; a first socket portion (21) is provided at one end of the lock core (20) close to the thumbwheel (40) in the axial direction, and the first socket portion (21) is suitable for being inserted into the first socket slot (41); The inner peripheral wall of the second lock shell portion (12) encloses a second accommodating cavity (121); the lock core structure further comprises a plug (50), and one axial end of the plug (50) is built into the second accommodating cavity (121); A second socket slot (42) is provided at one end of the thumbwheel (40) axially close to the plug (50); a second socket portion (51) is provided at one end of the plug (50) axially close to the thumbwheel (40), and the second socket portion (51) is suitable for being inserted into the second socket slot (42).

7. The lock core structure according to claim 6, characterized in that: The lock core structure also includes a gasket (60), which is coaxially arranged with the second socket portion (51), and the gasket (60) is arranged between the second lock shell portion (12) and the thumbwheel (40), and one axial end of the gasket (60) abuts against the end surface of the second lock shell portion (12), and the other end is suitable for axially limiting the thumbwheel (40).

8. The lock core structure according to claim 5, characterized in that: A first locking groove (22) is formed on one end of the lock core (20) axially close to the dial wheel (40); The lock core structure also includes a first retaining spring (71), which is clamped in the first retaining groove (22), and one axial end of the first retaining spring (71) is suitable for abutting against the end surface of the first lock housing part (11) along the axial direction close to one end of the dial wheel (40), and the other end is suitable for abutting against the end surface of one axial end of the dial wheel (40).

9. The lock core structure according to claim 7, characterized in that: A second slot (52) is formed at one end of the plug (50) axially close to the thumbwheel (40); The lock core structure also includes a second retaining spring (72), which is clamped in the second retaining groove (52), and one axial end of the second retaining spring (72) is suitable for abutting against the gasket (60), and the other end is suitable for abutting against the end surface of the other axial end of the dial wheel (40).

10. A door lock, characterized in that: include: A door lock body, and a lock core structure as described in any one of claims 1 to 9 above.

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