Lock body structure and door lock

Abstract

The application relates to the technical field of locks, and discloses a lock body structure and a door lock, which comprises a shell, a lock bolt is slidably arranged on one side of the shell, a lock bolt slider is slidably arranged in the shell and is provided with an unlocking portion on the side surface, an inner dial is rotatably arranged in the shell and is provided with a first protrusion on the outer periphery, an outer dial is coaxially rotatably arranged in the shell and is provided with a second protrusion and a third protrusion on the outer periphery, and a locking block is rotatably arranged in the shell and is provided with a fourth protrusion on the outer periphery; when the inner dial and the outer dial are rotated in the first direction, the first protrusion and the second protrusion abut against the unlocking portion to drive the lock bolt slider to move to the unlocking side; when the inner dial is rotated in the second direction, the first protrusion abuts against the fourth protrusion to drive the locking block to rotate in the first direction, so that the end surface of the fourth protrusion abuts against the side surface of the third protrusion to limit the rotation of the outer dial. The lock body structure utilizes the cooperation of the inner dial and the locking block, and can realize the functions of anti-locking and unlocking when the inner dial is rotated in the forward direction or the reverse direction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lock, in particular to a lock body structure and a door lock. BACKGROUND

[0002] A reverse turning knob is usually arranged on a door lock, when the door leaf is closed, the reverse turning knob is turned according to a preset direction, and the turning of the door handle is limited, that is, in a reverse locking state. However, the connection structure between the reverse turning knob and the handle in the existing door lock is relatively complex, and the stability is poor. When in use, the connection structure is prone to misalignment and other faults, affecting the reverse locking function. In addition, for some locks, such as a magnetic single lock tongue or a multi-lock tongue lock with a reverse locking lock tongue, when in use, the lock tongue related to the reverse locking function is usually retracted into the lock when the door leaf is in an open state. At this time, if someone mistakenly turns the reverse turning knob, the door handle cannot be turned, thereby affecting the normal use of the door lock. SUMMARY

[0003] The present application provides a lock body structure and a door lock to at least solve one of the above technical problems.

[0004] In order to achieve the above-mentioned purpose, in one aspect, the present application provides a lock body structure, comprising: a shell, one side of which is slidably provided with a lock tongue; a lock tongue slider, which is synchronously slidably arranged in the shell with the lock tongue, and a side surface of which is formed with an unlocking portion; an inner dial peach, which is rotatably arranged in the shell, and an outer periphery of which is formed with a first protrusion; an outer dial peach, which is coaxially rotatably arranged in the shell with the inner dial peach, and an outer periphery of which is formed with a second protrusion and a third protrusion; and a locking block, which is rotatably arranged in the shell, and an outer periphery of which is formed with a fourth protrusion; wherein when the inner dial peach is rotated in a first direction, the first protrusion can abut against the unlocking portion to drive the lock tongue slider to move to an unlocking side; when the outer dial peach is rotated in the first direction, the second protrusion can abut against the unlocking portion to drive the lock tongue slider to move to the unlocking side; when the inner dial peach is rotated in a second direction, the first protrusion abuts against the fourth protrusion to drive the locking block to rotate in the first direction, and then the end surface of the fourth protrusion abuts against the side surface of the third protrusion to limit the rotation of the outer dial peach.

[0005] Preferably, a limiting portion is formed on the lock tongue slider; an outer periphery of the inner dial peach is formed with a fifth protrusion; and when the lock tongue is slid into the shell, the limiting portion abuts against the fifth protrusion to limit the rotation of the inner dial peach in the second direction.

[0006] Preferably, the lock body structure further comprises: an unlocking push rod, which is synchronously slidably arranged in the shell with the lock tongue slider; and wherein an outer periphery of the locking block is formed with a sixth protrusion, and when the rotation of the outer dial peach is limited, the unlocking push rod abuts against the side surface of the sixth protrusion when moving to the unlocking side to drive the locking block to rotate and make the fourth protrusion away from the third protrusion.

[0007] Preferably, when the unlocking push rod moves to the unlocking side, it drives the locking block to rotate to the second direction, so that the fourth protrusion moves to the side of the first protrusion.

[0008] Preferably, the lock body structure further comprises: an unlocking knob coaxially arranged between the inner knob and the outer knob, and an unlocking slot is formed at the shaft center of the unlocking knob, and a groove is formed at one side of the unlocking knob to wrap the fourth protrusion; wherein a through hole is formed on the outer knob to be opposite to the unlocking slot.

[0009] Preferably, the lock body structure further comprises: a reset spring arranged in the shell to apply a force to the locking tongue towards the unlocking side.

[0010] Preferably, the locking tongue is a magnetic tongue, which can slide out of the shell when it is opposite to a lock tongue box with a magnet.

[0011] Preferably, the fourth protrusion is arranged at the lower side of the first protrusion and the upper side of the third protrusion.

[0012] Preferably, a seventh protrusion is formed on the inner knob to be opposite to the third protrusion, an inner abutting part protruding to the outer knob is formed on the first protrusion in the axial direction, and an outer abutting part protruding to the inner knob is formed on the second protrusion in the axial direction; the locking block is arranged in the shell to slide in the axial direction, and when the locking block slides in the axial direction, the fourth protrusion is in the rotating path of the inner abutting part and the third protrusion, or the fourth protrusion is in the rotating path of the outer abutting part and the seventh protrusion.

[0013] In order to achieve the above-mentioned purpose, in another aspect, the present application provides a door lock, comprising: a lock body structure as described above; an inner handle, one end of which penetrates through the shell and is connected with the inner knob; and an outer handle, one end of which penetrates through the shell and is connected with the outer knob.

[0014] According to the above description and practice, the lock body structure of the present application cancels the anti-lock knob in the traditional door lock, directly uses the cooperation of the inner knob and the locking block, and realizes the functions of anti-locking and unlocking when the inner knob is rotated in the forward direction / reverse direction. The structure inside the lock body is simplified, the stability of the lock body during operation is improved, and it is ensured that the lock body structure can operate stably for a long time. In addition, by using the cooperation of the locking tongue sliding block and the fifth protrusion on the inner knob, the situation that the lock body structure is mistakenly operated to be anti-locked in the unlocking state can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a schematic diagram of the internal structure of the lock body structure involved in an embodiment of the present application, in which part of the structure is in an exploded state.

[0016] Figure 2aFig. 1 is a schematic diagram of the internal structure of a lock body structure in an initial unlocking state according to an embodiment of the present application.

[0017] Figure 2b Fig. 2 is a schematic diagram of the internal structure of a lock body structure in a locked state and not being anti-locked according to an embodiment of the present application.

[0018] Figure 2c Fig. 3 is a schematic diagram of the internal structure of a lock body structure in an unlocking state by an outer knob according to an embodiment of the present application.

[0019] Figure 3a Fig. 4 is a schematic diagram of the internal structure of a lock body structure in an anti-locked state by an inner knob according to an embodiment of the present application.

[0020] Figures 3b to 3c Fig. 5 is a schematic diagram of the internal structure of a lock body structure in a fast unlocking state by an inner knob according to an embodiment of the present application.

[0021] Figure 4 Fig. 6 is a schematic diagram of the internal structure of a lock body structure in an emergency anti-locked release state by an unlocking knob according to an embodiment of the present application.

[0022] Reference signs in the drawings are:

[0023] 1, housing; 2, lock bolt; 3, lock bolt slider; 4, locking block; 5, inner knob; 6, outer knob; 7, unlocking push rod; 8, unlocking knob; 9, return spring; 10, lock bolt buckle box; 31, unlocking part; 32, limiting part; 41, fourth protrusion; 42, sixth protrusion; 51, first protrusion; 52, fifth protrusion; 53, seventh protrusion; 61, second protrusion; 62, third protrusion; 81, groove; 82, unlocking groove; 511, inner abutting part; 611, outer abutting part. DETAILED DESCRIPTION

[0024] Exemplary embodiments now will be described more fully hereinafter with reference to the accompanying drawings; however, this example embodiment can be implemented in any number of ways, and is not limited to the examples described herein. Rather, applications shall provide a example embodiment with sufficient information to enable others with ordinary skill in the art to practice the applications without unnecessary experimentation. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0025] In addition, the accompanying drawings are only schematic and are non-limiting illustrative of the disclosure. Like references denote like elements throughout the accompanying drawings, and description thereof is omitted when it is apparent. It should be noted that the terms "comprises", "comprising", "has", "having", "includes", "including", "contains", "containing" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises, has, includes, contains a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "first", "second", and the like, do not denote any order, quantity, combination or important / primary or secondary / tertiary, but are used to nomenclature elements of an embodiment. The terms "central", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, merely indicate or describe the orientation in the drawings and are not intended to denote or imply necessary or conventional orientations of the devices or elements described herein, therefore should not be construed as limiting the application.

[0026] Unless otherwise defined, the terms "mounting", "connected", "connecting" are to be construed as broad terms, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In this embodiment, a lock body structure is disclosed, please refer to Figures 1 to 4 , the lock body structure comprises: a shell 1, a lock tongue 2, a lock tongue slider 3, an inner knob 5, an outer knob 6 and a locking block 4. The shell 1 can be formed by two parts, and a space for accommodating other components is formed in the middle. Only one half of the shell 1 is shown in each figure to show the internal structure. One side of the shell 1 is provided with a lock tongue hole, and the lock tongue 2 is slidingly arranged at the side. The lock tongue 2 can be retracted in the lock tongue hole to achieve unlocking and locking.

[0028] The lock tongue slider 3 is slidingly arranged in the shell 1, one end of which is connected with the lock tongue 2 and slides synchronously with the lock tongue 2. The side surface of the lock tongue slider 3 is formed with an unlocking portion 31. The sliding assembly between the lock tongue slider 3 and the shell 1 and the sliding assembly between other structures in the following text can be realized by using the structures such as sliding groove, sliding rail and sliding rod in the prior art, and will not be described in detail. In this embodiment, the lock tongue 2 is a magnetic tongue, which can slide out of the shell 1 when it is opposite to the lock tongue buckle box 10 with a magnet. Specifically, when it is opposite to the lock tongue buckle box 10, it can be attracted by the magnet in the lock tongue buckle box 10, and automatically move into the lock tongue buckle box 10 to achieve locking.

[0029] The inner knob 5 and the outer knob 6 are coaxially arranged in the housing 1, and can be connected with the handles of the door in use, so that the user can rotate the two knobs through the handles. The inner knob 5 and the outer knob 6 are arranged towards the inner side and the outer side of the door leaf respectively in actual installation, and are connected with the inner handle and the outer handle respectively, so that the user can rotate one of the knobs in or out of the door.

[0030] The outer periphery of the inner knob 5 is formed with a first protrusion 51 opposite to the unlocking part 31. In the locked state, the unlocking part 31 is in the rotation path of the first protrusion 51 in the first direction. At this time, the inner knob 5 is rotated in the first direction, and the first protrusion 51 can abut against the unlocking part 31, thereby driving the bolt slider 3 to slide to the unlocking side, so as to realize unlocking. The outer periphery of the outer knob 6 is formed with a second protrusion 61 and a third protrusion 62 in the circumferential direction. The second protrusion 61 is opposite to the unlocking part 31. In the locked state, the unlocking part 31 is in the rotation path of the second protrusion 61 in the first direction. At this time, the outer knob 6 is rotated in the first direction, and the second protrusion 61 can abut against the unlocking part 31, thereby driving the bolt slider 3 to slide to the unlocking side, so as to realize unlocking.

[0031] The locking block 4 is rotatably arranged in the housing 1, and the outer periphery of the locking block 4 is formed with a fourth protrusion 41. The fourth protrusion 41 is in the rotation path of the first protrusion 51 in the second direction, and is in the rotation path of the third protrusion 62 in the first direction. When the inner knob 5 is rotated in the second direction, the first protrusion 51 abuts against the side surface of the fourth protrusion 41, thereby driving the locking block 4 to rotate in the first direction, and the end surface of the fourth protrusion 41 abuts against the side surface of the third protrusion 62. At this time, the length direction of the fourth protrusion 41 is the tangential direction of the outer knob 6, so as to limit the rotation of the outer knob 6.

[0032] Specifically, please refer to the lock body structure in the initial unlocking state in Figures 2a to 3c , Figure 2a , wherein the bolt 2 is retracted into the housing 1, and the bolt slider 3 slides to the right side in the housing 1. When the bolt 2 is moved into the bolt catch box 10, the bolt slider 3 is moved to the left side, and finally presents the state shown in Figure 2b . At this time, the unlocking part 31 is opposite to the first protrusion 51 and the second protrusion 61. If the inner knob 5 is rotated clockwise, the first protrusion 51 abuts against the unlocking part 31, thereby driving the bolt slider 3 to slide to the right side, so as to move the bolt 2 into the housing 1, and complete unlocking. If the outer knob 6 is rotated clockwise, the second protrusion 61 abuts against the unlocking part 31, thereby driving the bolt slider 3 to slide to the right side, so as to move the bolt 2 into the housing 1, and also complete unlocking. Figure 2c That is, the process of unlocking by rotating the outer knob 6 clockwise is shown.

[0033] In the locked state, the lock body structure can be relocked by rotating the inner knob 5 counterclockwise, and the outer knob 6 cannot be rotated clockwise to unlock subsequently. For details, please refer to Figure 3aWhen the inner knob 5 is rotated counterclockwise, the first protrusion 51 abuts against the side surface of the fourth protrusion 41, and drives the locking block 4 to rotate clockwise, and the end surface of the fourth protrusion 41 is correspondingly rotated to the side surface of the third protrusion 62. At this time, when the outer knob 6 is rotated clockwise, the third protrusion 62 abuts against the end surface of the fourth protrusion 41, and cannot drive the locking block 4 to rotate, and thus the outer knob 6 cannot be rotated clockwise, that is, the reverse locking is realized.

[0034] In the reverse locking state, since the locking block 4 only limits the outer knob 6, the inner knob 5 can also be rotated clockwise to realize the unlocking.

[0035] The lock body structure in the embodiment cancels the reverse knob in the traditional door lock, directly utilizes the cooperation of the inner knob 5 and the locking block 4, and realizes the reverse locking and unlocking functions when the inner knob 5 is rotated forwardly or reversely. The structure inside the lock body is simplified, the stability of the lock body during operation is improved, and it is ensured that the lock body structure can be stably operated for a long time.

[0036] In the embodiment, the fourth protrusion 41 is arranged on the lower side of the first protrusion 51 and the upper side of the third protrusion 62, so that the locking block 4 can be driven to rotate clockwise to limit the outer knob 6 when the inner knob 5 is rotated counterclockwise. Correspondingly, the first direction refers to the clockwise direction in the drawings, and the second direction refers to the counterclockwise direction in the drawings. In other embodiments, the positional relationship between the inner knob 5, the outer knob 6 and the locking block 4 can also be changed according to actual needs, and finally the inner knob 5 is rotated in two opposite directions during unlocking and reverse locking.

[0037] It should be noted that when the lock body structure is in the unlocking state, that is, the lock tongue 2 moves into the housing 1, the inner knob 5 is also rotated counterclockwise in the above-mentioned manner, and the lock body structure is also in the reverse locking state. At this time, the outer knob 6 and the outer handle connected thereto cannot be rotated, which affects the normal use of the lock body structure. Therefore, a fifth protrusion 52 is further formed on the inner knob 5, and a limiting portion 32 is formed on the lock tongue sliding block 3. When the lock tongue 2 moves into the housing 1 with the lock tongue sliding block 3, the limiting portion 32 abuts against the fifth protrusion 52, and the rotation of the inner knob 5 in the counterclockwise direction is limited, and the reverse locking cannot be realized. In other words, when the lock tongue 2 moves into the housing 1, the lock body structure cannot be in the reverse locking state by rotating the inner knob 5, and the phenomenon of reverse locking by mistake when the door leaf is opened by the user is avoided.

[0038] Further, in the embodiment, a unlocking push rod 7 is further arranged in the housing 1, which is used to release the reverse locking state when the inner handle is unlocked in the reverse locking state. Specifically, please refer to Figure 3b and Figure 3c, the unlocking push rod 7 is synchronously slid with the lock tongue slider 3 in the shell 1, the left end of the unlocking push rod 7 is fixedly connected with the lock tongue 2, and the sixth protrusion 42 is formed on the outer periphery of the locking block 4. In the anti-lock state, the rotation of the outer dial 6 is limited, at this time, when the inner dial 5 is rotated clockwise to unlock, the unlocking push rod 7 is driven by the lock tongue 2 to move to the unlocking side (i.e. the right side in the figure), and abuts against the side surface of the sixth protrusion 42, drives the locking block 4 to rotate counterclockwise, so that the fourth protrusion 41 is away from the third protrusion 62, and finally reaches the side surface of the first protrusion 51, i.e. the state shown in Figure 3c . At this time, the rotation limitation of the outer dial 6 is released, and the locking block 4 returns to the initial position, and the subsequent counterclockwise rotation of the inner dial 5 can continue to realize the anti-lock.

[0039] In other embodiments, the setting positions of the unlocking push rod 7, the locking block 4 and the sixth protrusion 42 can be changed according to actual needs, as long as the unlocking push rod 7 can abut against the side surface of the sixth protrusion 42 when moving to the unlocking side, and drive the locking block 4 to rotate so that the fourth protrusion 41 is away from the third protrusion 62, so that the inner dial 5 can realize unlocking and releasing the anti-lock at the same time.

[0040] In this embodiment, a unlocking dial 8 is rotatably arranged between the inner dial 5 and the outer dial 6, and is coaxially rotatable with the inner dial 5, the unlocking slot 82 is formed at the axis of the unlocking dial 8, the recess 81 is formed on one side of the unlocking dial 8 and is sleeved on the fourth protrusion 41, so that the unlocking dial 8 and the locking block 4 are synchronously rotatable, i.e. the two are meshingly connected together. The outer dial 6 is provided with a through hole opposite to the unlocking slot 82. The user can use a preset tool outside to rotate the unlocking dial 8 in the unlocking slot 82 in the shell 1, and then rotate the locking block 4 to make the fourth protrusion 41 away from the third protrusion 62, so as to realize the release of the anti-lock.

[0041] Figure 4 The process of releasing the anti-lock by the unlocking dial 8 is shown, and compared with the anti-lock state shown in Figure 3a , it can be seen that the clockwise rotation of the unlocking dial 8 can make the locking block 4 rotate counterclockwise, and then the fourth protrusion 41 is away from the third protrusion 62, and reaches the side surface of the first protrusion 51, so that the anti-lock state is released.

[0042] In addition, in this embodiment, the reset spring 9 is also arranged in the shell 1, the left end of the reset spring 9 is connected with the lock tongue 2, and an acting force towards the unlocking side is indirectly applied to the lock tongue slider 3. As shown in Figure 2a and Figure 2b , the reset spring 9 applies an acting force towards the right side to the lock tongue slider 3, when the lock tongue 2 and the lock tongue slider 3 are not subjected to other external acting forces, the reset spring 9 can pull the lock tongue 2 to the inside of the shell 1, so as to prevent the lock tongue 2 from colliding with the user or other objects.

[0043] For the lock body structure in this embodiment, two plums connected with the handles are provided, instead of one plum shared by the inner and outer handles, so that the inner and outer handles connected with the plums can rotate independently. In actual installation, there are left opening and right opening forms of the door leaf, and correspondingly, the inner plum 5 in the lock body structure will be on the inner side and the outer side of the door leaf in the two cases respectively. The realization of the above functions is realized by the inner plum 5 connected with the inner handle, and if it is directly connected with the outer handle, the above functions cannot be realized. Therefore, in order to ensure that the lock body structure can be applied to the left opening and right opening door leaf at the same time, the structure of the inner plum 5 and the outer plum 6 is specially improved. Please combine Figure 1 A seventh protrusion 53 opposite to the third protrusion 62 is formed on the inner plum 5, an inner abutting portion 511 protruding to the outer plum 6 is formed on the first protrusion 51 in the axial direction, an outer abutting portion 611 protruding to the inner plum 5 is formed on the second protrusion 61 in the axial direction, and the locking block 4 is arranged in the shell 1 in the axial sliding manner. The user can adjust the position of the locking block 4 according to the actual opening direction of the door leaf.

[0044] Specifically, in this embodiment, the fourth protrusion 41 is in the rotating path of the inner abutting portion 511 and the third protrusion 62. When the inner plum 5 is counterclockwise rotated, the inner abutting portion 511 thereon drives the locking block 4 to rotate, and then the fourth protrusion 41 abuts against the third protrusion 62 to limit the rotation of the outer plum 6. In this structure, the inner plum 5 of the lock body structure is arranged close to the inner side of the door leaf, and the outer plum 6 is arranged close to the outer side of the door leaf.

[0045] When it is necessary to arrange the inner plum 5 close to the outer side of the door leaf and the outer plum 6 close to the inner side of the door leaf to adapt to the opening direction of the door leaf, the user only needs to slide the locking block 4 in the axial direction, so that the fourth protrusion 41 thereon is in the rotating path of the outer abutting portion 611 and the seventh protrusion 53. At this time, the outer plum 6 is counterclockwise rotated, the outer abutting portion 611 thereon drives the locking block 4 to rotate, and then the fourth protrusion 41 abuts against the seventh protrusion 53 to limit the rotation of the inner plum 5, and the same anti-lock function can be realized on the inner side of the door.

[0046] It should be noted that the related structure for realizing the axial sliding of the locking block 4 is not the innovation of the present technical solution, and the related structure already exists in the prior art, for example, a through hole is formed on the shell 1, and the locking block 4 can be moved by a tool, so the related structure will not be described in detail.

[0047] In addition, in this embodiment, a door lock is also disclosed, which comprises the above-mentioned lock body structure, an inner handle and an outer handle. One end of the inner handle penetrates through the shell 1 and is connected with the inner plum 5, and one end of the outer handle penetrates through the shell 1 and is connected with the outer plum 6. The user can rotate the inner plum 5 by rotating the inner handle, and rotate the outer plum 6 by rotating the outer handle, to realize the functions of the above-mentioned lock body structure.

[0048] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

Claims

1. A lock body structure, characterized by, The lock body structure comprises: a shell, one side of which is provided with a sliding bolt; a sliding bolt block which is provided in the shell and synchronously slides with the sliding bolt, and is provided with an unlocking portion and a limiting portion on the side surface; an inner knob which is rotatably provided in the shell and is provided with a first protrusion and a fifth protrusion on the outer periphery; an outer knob which is coaxially rotatably provided in the shell and is provided with a second protrusion and a third protrusion on the outer periphery; a locking block which is rotatably provided in the shell and is provided with a fourth protrusion and a sixth protrusion on the outer periphery; an unlocking push rod which is synchronously slidably provided in the shell with the sliding bolt block; wherein when the sliding bolt is slid into the shell, the limiting portion is abutted against the fifth protrusion to limit the rotation of the inner knob in the second direction; when the inner knob is rotated in the first direction, the first protrusion is abutted against the unlocking portion to drive the sliding bolt block to move to the unlocking side; when the outer knob is rotated in the first direction, the second protrusion is abutted against the unlocking portion to drive the sliding bolt block to move to the unlocking side; when the inner knob is rotated in the second direction, the first protrusion is abutted against the fourth protrusion to drive the locking block to rotate in the first direction, so that the end surface of the fourth protrusion is abutted against the side surface of the third protrusion to limit the rotation of the outer knob; when the rotation of the outer knob is limited, the unlocking push rod is abutted against the side surface of the sixth protrusion when it moves to the unlocking side, so as to drive the locking block to rotate and make the fourth protrusion move away from the third protrusion.

2. The lock body structure according to claim 1, wherein when the unlocking push rod moves to the unlocking side, it drives the locking block to rotate in the second direction, so as to make the fourth protrusion move to the side surface of the first protrusion.

3. The lock body structure of claim 1, wherein The lock body structure further comprises: an unlocking knob which is coaxially rotatably provided between the inner knob and the outer knob, and is provided with an unlocking groove at the shaft center and a groove which is sleeved with the fourth protrusion on one side; wherein the outer knob is provided with a through hole which is opposite to the unlocking groove.

4. The lock body structure of claim 1, wherein The lock body structure further comprises: a reset spring which is provided in the shell and applies a force to the sliding bolt towards the unlocking side.

5. The lock body structure according to claim 1, wherein the sliding bolt is a magnetic bolt which can be slid out of the shell when it is opposite to a bolt box with a magnet.

6. The lock body structure according to claim 1, wherein the fourth protrusion is provided on the lower side of the first protrusion and the upper side of the third protrusion.

7. The lock body structure according to claim 1, wherein the inner knob is provided with a seventh protrusion which is opposite to the third protrusion, the first protrusion is provided with an inner abutting portion which protrudes towards the outer knob in the axial direction, and the second protrusion is provided with an outer abutting portion which protrudes towards the inner knob in the axial direction; the locking block is slidably provided in the shell in the axial direction, and when the locking block slides in the axial direction, the fourth protrusion is in the rotation path of the inner abutting portion and the third protrusion, or the fourth protrusion is in the rotation path of the outer abutting portion and the seventh protrusion.

8. A door lock characterized by The lock body structure comprises: any one of the lock body structures according to claims 1 to 7; an inner handle which penetrates the shell at one end and is connected with the inner knob; an outer handle which penetrates the shell at one end and is connected with the outer knob.

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