CN112681894A - Lock body structure - Google Patents

Abstract

The invention discloses a lock body structure, comprising: the lock body shell is provided with a lining plate of a lock tongue hole; the limiting groove component is arranged on one side, close to the lock tongue hole, in the lock body shell, the opening end of the limiting groove component is opposite to the lock tongue hole, and a side hole is formed in one side wall of the limiting groove component; the turnover tongue is arranged in the opening end of the limiting groove component and can move along the length direction of the limiting groove component, a limiting lug is arranged on the side part of the turnover tongue, a clamping groove is arranged at the rear end of the turnover tongue, a limiting clamping plate with the length larger than the width of the turnover tongue is arranged on the side wall of one side of the clamping groove, and the front end of the turnover tongue penetrates through the bolt hole; the positioning spring is arranged in the limiting groove component, one end of the positioning spring is connected to the bottom surface of the limiting groove component, and the other end of the positioning spring exerts elastic force on the bottom surface of the clamping groove; the locking component is rotatably arranged on a pin shaft arranged on the lock body shell, and one end of the locking component can penetrate through the side hole to extend into the limiting groove component and is abutted against the limiting clamping plate; and an unlocking assembly controlling the locking assembly to rotate. The lock body structure has the characteristic of short unlocking stroke, and is more convenient to unlock.

Description

Lock body structure

Technical Field

The invention relates to the technical field of locks, in particular to a lock body structure.

Background

Most of the existing lock tongues are of an inclined tongue type which can only extend and retract, a common inclined tongue type lock tongue can quickly rebound to automatically lock a door under the action of elastic force when the door is closed, but the inclined tongue type lock tongue has a long stroke and large opening force when the door is unlocked. When the latch bolt type lock is arranged in a wet place such as a bathroom, water is easily stained on hands, the hands and the lock handle are easy to slide when the lock is unlocked, the lock is not easy to open, and the defects of long unlocking stroke and large unlocking force of the latch bolt are more obvious. In addition, since bathroom locks are typically not keyed, closing the door outside the door can result in the door being locked when the lock is activated by a mistake. At the moment, the false image is given to people, people are mistaken for being in the bathroom, and a professional tool is needed to open the door.

Disclosure of Invention

The present invention is made to solve the above-mentioned technical problems, and an object of the present invention is to provide a lock body structure that can lock quickly and has the advantages of short unlocking stroke, small force required, and no back locking when the door is closed.

In order to achieve the above object, the present invention provides a lock body structure including: the lock body shell 1 and the lining plate 13 are arranged on the side part of the lock body shell 1 and are provided with lock bolt holes 2; the limiting groove member 4 is arranged on one side, close to the lock tongue hole 2, in the lock body shell 1, the opening end of the limiting groove member is opposite to the lock tongue hole 2, and a side hole 41 is arranged on one side wall of the limiting groove member 4; the turnover tongue 3 is arranged in the opening end of the limiting groove component 4 and can move along the length direction of the limiting groove component 4, a limiting lug 36 is arranged on the side part of the turnover tongue 3, a clamping groove 35 is arranged at the rear end of the turnover tongue 3, a limiting clamping plate 37 with the length larger than the width of the turnover tongue 3 is arranged on the side wall of one side of the clamping groove 35 of the turnover tongue 3, and the front end of the turnover tongue 3 penetrates through the lock tongue hole 2 of the lining plate 13; the positioning spring 5 is arranged in the limiting groove member 4, one end of the positioning spring is connected to the bottom surface of the limiting groove member 4, and the other end of the positioning spring exerts elastic force on the bottom surface of the clamping groove 35 of the turnover tongue 3; a locking assembly 6 rotatably mounted on a pin 14 provided on the lock body housing 1, wherein a first catch plate 61 provided at one end of the locking assembly 6 can extend into the limiting groove member 4 through the side hole 41 of the limiting groove member 4 and abut against the limiting catch plate 37; and the unlocking assembly 8 is arranged at the other end of the locking assembly 6, and controls the locking assembly 6 to rotate, so that the first clamping plate 61 of the locking assembly 6 moves downwards and is separated from the limiting clamping plate 37.

Preferably, the unlocking assembly 8 comprises an inner gear 81, and a reverse locking boss 83 and a first unlocking boss 84 are arranged on the periphery of the inner gear 81.

Preferably, a second catch plate 62 is arranged at the other end of the locking component 6, and one end of the second catch plate 62 can abut against the side surface of the anti-locking boss 83; a third catch plate 63 protrudes from the other end of the second catch plate 62, and the third catch plate 63 can abut against a side surface of the first unlocking protrusion 84.

Preferably, the anti-lock device further comprises a strip-shaped anti-lock strip plate 7, the anti-lock strip plate 7 penetrates through a slot formed in the bottom surface of the limiting groove member 4 and stretches over the limiting groove member 4, a positioning plate capable of abutting against the bottom surface of the clamping groove 35 of the turnover tongue 3 is arranged at one end, extending into the limiting groove member 4, of the anti-lock strip plate 7, and the positioning spring 5 is connected to the positioning plate; the periphery of the inner peach-shifting 81 is further provided with an anti-locking boss 85, and the anti-locking boss 85 can abut against the other end of the anti-locking strip plate 7.

Preferably, the inner wall of the lock body housing 1 is provided with a rotation stopping block 15, and the rotation stopping block 15 is located between the anti-locking boss 85 and the first unlocking boss 84 and used for limiting the rotation angle of the inner peach key 81.

Preferably, the unlocking assembly 8 further comprises an outer dial gear 82, the outer dial gear 82 and the inner dial gear 81 are coaxially arranged, and a second unlocking boss 86 capable of abutting against the third clamping plate 63 is arranged on the periphery of the outer dial gear 82.

Preferably, the bottom surface of the clamping groove 35 close to the inner wall of the lock body shell 1 is an arc surface.

Preferably, the pin 14 is further provided with a torsion spring 9, one torsion arm of which abuts against the inner wall of the lock body housing 1, and the other torsion arm of which is connected to the locking assembly 6, so as to apply an elastic force to one end of the locking assembly 6, so that the first catch plate 61 moves toward the limiting groove member 4.

As can be seen from the above description and practice, the lock body structure of the present invention has the following advantages:

1. the lock body structure of the invention is provided with the turnover tongue capable of horizontally sliding and rotating, when the door is closed, the turnover tongue can horizontally move under the action of the door frame, and when the door is opened, the turnover tongue can simultaneously rotate and horizontally move under the action of the door frame, so that the turnover tongue does not need to be independently driven to contract towards the inside of the lock body shell, the unlocking stroke is reduced, and the door can be opened without large external force.

2. The lock body structure can lock the turnover tongue and limit the rotation movement of the turnover tongue through the limiting clamping plate and the locking assembly, so that the door is reversely locked. When the door is unlocked, the rotating function of the turnover tongue can be recovered only by moving the locking assembly out of the limiting groove, so that the door is opened.

3. The lock body structure can lock the turnover bolt in the door through the inner shifting peach, but cannot open the turnover bolt outside the door, can open the door from the inside or outside the door when the turnover bolt is not locked through the outer shifting peach, and has an unlocking stroke greatly shortened compared with the existing inclined bolt type bolt.

4. The lock body structure of the invention enables the lock body to be reversely locked only in the door and not outside the door by arranging the anti-locking strip plate and the anti-locking lug boss, thereby effectively avoiding the phenomenon that the lock body is reversely locked when no person is in the door of the traditional lockset.

Drawings

Fig. 1 is a schematic view of the internal structure of a lock body structure according to an embodiment of the present invention.

Fig. 2 is a schematic view of a flip tongue according to an embodiment of the present invention from a first perspective.

Fig. 3 is a schematic view of a flip tongue according to an embodiment of the present invention from a second viewing angle.

Fig. 4 is a schematic view of a flip tongue according to an embodiment of the present invention from a third perspective.

Fig. 5 is an exploded view of a lock body structure according to an embodiment of the present invention.

Figure 6 is a schematic view of the lock body structure according to one embodiment of the present invention after the flip tongue is flipped to the inner side of the door.

Fig. 7 is a schematic structural view of an inner peach according to an embodiment of the present invention.

The reference numbers in the figures are:

1. the lock comprises a lock body shell 11, a first shell 12, a second shell 13, a lining plate 14, a pin shaft 15 and a rotation stopping block;

2. a lock tongue hole;

3. the turning tongue 31, the front end face 32, the rear end face 33, the first side face 34, the second side face 35, the clamping groove 36, the limiting bump 37 and the limiting clamping plate;

4. a limit groove member 41, a side hole;

5. a positioning spring;

6. the locking assembly 61, the first clamping plate 62, the second clamping plate 63 and the third clamping plate;

7. an anti-lock bar plate;

8. the unlocking assembly 81, the inner shifting peach 82, the outer shifting peach 83, the reverse locking boss 84, the first unlocking boss 85, the anti-locking boss 86 and the second unlocking boss;

9. a torsion spring.

Detailed Description

Exemplary embodiments will now be described more fully with reference to the accompanying drawings. The exemplary embodiments, however, may be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. In the present disclosure, the terms "include", "arrange", "disposed" and "disposed" are used to mean open-ended inclusion, and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first," "second," and the like are used merely as labels, and are not limiting as to the number or order of their objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Figure 1 is a schematic view of the internal structure of a lock body structure according to an embodiment of the present invention, and shows the connection relationship of the internal components of the lock body structure in the embodiment. Fig. 2 is a schematic view of a flip tongue according to an embodiment of the present invention, showing an upper end surface, a rear end surface and a second side surface of the flip tongue, from a first perspective. Fig. 3 is a schematic view of a flip tongue according to an embodiment of the present invention, showing an upper end surface, a front end surface and a first side surface of the flip tongue, from a second perspective. Fig. 4 is a schematic view of the flip tongue according to an embodiment of the present invention, showing the upper end surface, the rear end surface and the second side surface of the flip tongue, from a third perspective. Figure 5 is an exploded view of the lock body structure according to an embodiment of the present invention, showing the details and connections of the various components that make up the lock body structure. Figure 6 is a schematic view of the lock body structure according to one embodiment of the present invention after the flip tongue is flipped to the inner side of the door. Fig. 7 is a schematic structural view of an inner peach according to an embodiment of the present invention.

Referring to fig. 1 to 7, in this embodiment, the lock body structure includes a lock body housing 1, a flip-flop type bolt structure and a lock release assembly 8. The lock body shell 1 is composed of a first shell body 11, a second shell body 12 and a lining plate 13, the first shell body 11 and the second shell body 12 are buckled to form a hollow shell body, the lining plate 13 is arranged at the opening of the side edge of the shell body, and a lock tongue hole 2 is formed in the middle of the lining plate 13.

Convertible spring bolt structure sets up the one side that is close to spring bolt hole 2 at lock body shell 1, convertible spring bolt structure has a upset tongue 3, and the front end of upset tongue 3 can stretch out to the outside of lock body shell 1 via spring bolt hole 2 for thereby with the lockhole cooperation in the door frame with the door locking.

A U-shaped limiting groove member 4 is further arranged in the lock body shell 1, one end of the opening of the U-shaped limiting groove member faces the bolt hole 2, and the limiting groove member 4, the first shell 11 and the second shell 12 form a strip-shaped movable space. The turnover tongue 3 is disposed in the space and is movable in the longitudinal direction of the stopper groove member 4, i.e., in the y-axis direction in the figure.

Referring to fig. 2 to 5, the turning tongue 3 is a cylinder with a parallelogram cross section, and the front and rear ends thereof are inclined planes with the same direction, that is, the front end face 31 is parallel to the rear end face 32, wherein the front end face 31 is an end face extending out of the lock tongue hole 2, and the rear end face 32 is an end face located in the limiting groove member 4. In addition, the first side 33 and the second side 34 are also two parallel planes, wherein the first side 33 refers to the side where the turnover tongue 3 contacts with the inner side wall of the first housing 11, and the second side 34 refers to the side where the turnover tongue 3 contacts with the inner side wall of the second housing 12. The first side 33 is in sliding contact with the inner side wall of the first housing 11, and the second side 34 is in sliding contact with the inner side wall of the second housing 12. In addition, the intersection of the front end surface 31 and the first side surface 33 is set as a cambered surface, and the intersection of the rear end surface 32 and the second side surface 34 is set as a cambered surface, so that the friction force between the turnover tongue 3 and the inner wall of the lock body shell 1 during turnover is reduced, and the turnover is smoother.

A locking groove 35 is formed at the rear end of the flip tongue 3 along the transverse direction (i.e., the x-axis direction in the figure), and the locking groove 35 penetrates through the first side surface 33 and the rear end surface 32. A positioning spring 5 is arranged between the clamping groove 35 and the bottom surface of the limiting groove component 4, and the positioning spring 5 is used for enabling the front end of the turnover tongue 3 to extend out of the lock tongue hole 2 by utilizing the self elasticity. In this embodiment, the rear end of the positioning spring 5 is fixedly connected with, e.g., inserted into, the bottom surface of the limiting groove member 4, and the front end of the positioning spring 5 is disposed in the engaging groove 35. In order to make the turning tongue 3 smoother during turning, the bottom surface of the clamping groove 35 close to the inner wall of the lock body shell 1 is designed to be a cambered surface. Specifically, the intersection of the rear end surface 32 of the flip tongue 3 and the bottom surface of the slot 35 is an arc surface, and the intersection of the first side surface 33 of the flip tongue 3 and the bottom surface of the slot 35 is an arc surface.

The side part of the turnover tongue 3 is also provided with a limit bump 36 for controlling the length of the turnover tongue 3 extending out of the lock tongue hole 2, the limit bump 36 is a platform with a convex end face, and the distance between the outermost sides of the upper limit bump 36 and the outermost sides of the lower limit bump 36 are greater than the height of the lock tongue hole 2. The function of the spring is to make only the front part of the turnover tongue 3 extend out of the bolt hole 2 under the elastic force of the positioning spring 5. In addition, the distance between the outermost sides of the upper and lower limit projections 36 is slightly smaller than the distance between the upper and lower inner walls of the limit groove member 4, and the movement of the turnover tongue 3 in the z-axis direction is limited.

When the door is closed, the front end face 31 of the turnover tongue 3 positioned at the outer end of the bolt hole 2 is extruded by the door frame, so that the turnover tongue 3 moves towards the inside of the limiting groove component 4 along the negative direction of the y axis, the positioning spring 5 is compressed at the moment, when the door is closed, the turnover tongue 3 can move towards the outside of the bolt hole 2 along the length direction of the limiting groove component 4 under the resilience force of the positioning spring 5 until the door enters the lock hole in the door frame, and the door is closed at the moment. When the door is opened, the door is pushed to the inner side of the door, namely, a force along the positive direction of the x axis in the drawing is applied to the door, at the moment, the second side surface 34 of the turnover tongue 3 is subjected to an acting force of the door frame along the negative direction of the x axis, so that the turnover tongue 3 rotates along the direction of the z axis in the drawing until the rear end surface 32 is parallel to the yz plane (as shown in figure 6), and then the second side surface 34 of the turnover tongue 3 is extruded by the door frame, so that the turnover tongue 3 moves towards the limiting groove component 4 along the negative direction of the y axis until the front end of the turnover tongue 3 enters the limiting groove component 4, and at the moment, the door can be opened.

In order to make the lock body structure have the locking function, a limit catch plate 37 with the length larger than the width of the turnover tongue 3 is arranged on the side wall of the turnover tongue 3. A side hole 41 is opened in the side wall of the stopper groove member 4. As shown in fig. 5, in this embodiment, the side hole 41 is a long hole. A locking assembly 6 is provided within the lock body housing 1. Specifically, the locking assembly 6 is composed of two fixedly connected plate bodies, and the joint of the two fixedly connected plate bodies is provided with a shaft hole and hinged on a pin shaft 14 in the lock body shell 1, and can rotate around the pin shaft 14. It goes without saying that the locking assembly 6 can also be formed by a plate, which is hinged at its middle to the pin 14 in the lock housing 1.

One end of the locking assembly 6 is disposed within the side hole 41. Specifically, one end of the locking assembly 6 adjacent to the side hole 41 is provided with a first catch plate 61 slightly smaller in size than the side hole 41, and by rotating the locking assembly 6, the first catch plate 61 can be moved into or out of the spacing groove member 4 through the side hole 41. When the first catch plate 61 enters the limiting groove member 4, the first catch plate 61 abuts against the limiting catch plate 37, so that the limiting catch plate 37 is prevented from moving transversely, i.e. the limiting catch plate 37 is prevented from moving along the x-axis direction, and accordingly, the turning tongue 3 is prevented from rotating, i.e. the lock body structure is locked. At this time, if the door is in the closed state, it is unlocked. It should be noted that the height of the first catch plate 61 entering the limiting groove member 4 does not exceed the height of the limiting catch plate 37, so that the first catch plate 61 only limits the turning motion of the turning tongue 3 in the transverse direction, and does not limit the movement of the turning tongue 3 in the y-axis direction.

In this embodiment, the height of the restraining catch plate 37 and the restraining projection 36 is the same to increase the stability of the flip tongue. As shown in fig. 1 and 6, in this embodiment, the locking assembly 6 is disposed below the limiting groove member 4, when the locking assembly 6 rotates clockwise around the pin 14, the first catch plate 61 at the left end thereof is screwed up into the limiting groove member 4 to limit the rotation of the turning tongue 3, and when the locking assembly 6 rotates counterclockwise around the pin 14, the first catch plate 61 at the left end thereof is screwed down out of the limiting groove member 4 to release the limitation of the rotation of the turning tongue 3. In other embodiments, the locking assembly 6 may be disposed above the retaining groove member 4, and the locking and unlocking directions may be opposite to the rotation direction.

As shown in fig. 5, the pin 14 is further provided with a torsion spring 9, one torsion arm of which abuts against the inner wall of the lock body case 1 and the other torsion arm of which is connected to the lock unit 6, so as to apply an elastic force to one end of the lock unit 6, the elastic force causing the first locking plate 61 to move toward the stopper groove member 4.

As shown in fig. 1, 5 and 6, the other end of the locking assembly 6 is connected to the unlocking assembly 8. The unlocking assembly 8 comprises an inner dial 81, the inner dial 81 is in the shape of a cylinder rotatable about its axis, the axis of the cylinder being perpendicular to the inner wall of the lock body housing 1. As shown in fig. 7, an anti-lock boss 83 and a first unlocking boss 84 are provided on the circumferential edge of the inner peach 81. The thickness of the back locking boss 83 along the x-axis direction is not less than that of the inner peach-shifting 81; the thickness of the first unlocking boss 84 in the x-axis direction is less than the thickness of the inner picks 81.

Accordingly, the right end of the locking assembly 6 is provided with a second catch plate 62, one end of the second catch plate 62 can abut against the side surface of the reverse locking boss 83, and the other end of the second catch plate 62 is provided with a third catch plate 63 protruding from the surface of the circular arc-shaped part. The third catch 63 may abut against a side of the first unlocking ledge 84.

Preferably, the second catch plate 62 has a circular arc-shaped portion corresponding to the outer periphery of the inner thumb wheel 81, and the circular arc-shaped portion of the second catch plate 62 is in contact with the outer periphery of the unlocking assembly 8; the end part of the arc-shaped part of the second clamping plate 62 can be abutted against the side surface of the back locking boss 83; a third catch plate 63 is provided at the other end of the arcuate portion of the second catch plate 62 so as to project from the surface of the arcuate portion, and the third catch plate 63 can abut against the side surface of the first unlocking boss 84. The second catch plate 62 is arranged in parallel with the first unlocking protrusion 84, and preferably, the sum of the thicknesses of the second catch plate 62 and the first unlocking protrusion 84 in the x-axis direction is not greater than the thickness of the inner thumb wheel 81. The third chucking plates 63 are respectively provided on both side surfaces of the locking assembly 6.

Specifically, when the locking device is used, the inner ratchet 81 is rotated counterclockwise, and when the reverse locking boss 83 abuts against the second clamping plate 62, the locking assembly 6 is driven to rotate clockwise around the pin 14 by continuing to rotate, so that the first clamping plate 61 can be screwed into the limiting groove member 4, and the turnover tongue 3 is locked. If the inner dial peach 81 is rotated clockwise, when the first unlocking boss 84 abuts against the third clamping plate 63, the locking assembly 6 is driven to rotate counterclockwise around the pin shaft 14 by continuing to rotate, and the first clamping plate 61 can be unscrewed from the limiting groove member 4, so that the locking of the turnover tongue 3 is released.

Further, an elongated anti-lock slat 7 is provided in the stopper groove member 4 along the longitudinal direction (i.e., the y-axis direction in the drawing). The anti-locking strip plate 7 penetrates through a groove formed in the bottom surface of the limiting groove component 4 and stretches over the limiting groove component 4, a positioning plate which can be abutted against the bottom surface of the clamping groove 35 of the turnover tongue 3 is arranged at one end, extending into the limiting groove component 4, of the anti-locking strip plate 7, and the positioning spring 5 is connected to the positioning plate. One end of the anti-locking strip plate 7 is a positioning plate parallel to the xz plane, the end is arranged in the clamping groove 35, and the height of the end along the z axis is slightly smaller than that of the clamping groove 35, so that the overturning of the overturning tongue 3 is not influenced. The other end of the anti-lock strip plate 7 is a plate body parallel to the xy plane after being bent, and the end penetrates through the bottom surface of the limiting groove member 4 and is tangent to the side edge of the inner shifting peach 81. The anti-locking strip plate 7 is connected with the limiting groove member 4 in a sliding way and can slide along the length direction of the limiting groove member 4. Meanwhile, the periphery of the inner peach-shifting block 81 is further provided with an anti-locking boss 85, and the anti-locking boss 85 can abut against the other end of the anti-locking strip plate 7.

The anti-locking boss 83, the first unlocking boss 84 and the anti-locking boss 85 are sequentially arranged on the circumferential side edge of the inner dial peach 81 along the counterclockwise direction. The reverse locking boss 83 is arranged at a position close to the third clamping plate 63, and the reverse locking boss 83 can abut against the second clamping plate 62 when the inner shifting peach 81 rotates; the first unlocking boss 84 is arranged at a position close to the second clamping plate 62, the first unlocking boss 84 and the second unlocking boss are arranged side by side, and the first unlocking boss 84 can abut against the third clamping plate 63 when the inner shifting peach 81 rotates; the anti-lock boss 85 is disposed above the inner picks 81 at a position close to the anti-lock bar plate 7.

In the use, when closing the door, upset tongue 3 moves to the inside of spacing groove component 4 (being the negative direction motion of y axle in the drawing) under the extrusion of door frame, drives anti-lock slat 7 to right side horizontal migration, and its terminal surface drives interior thumb wheel 81 clockwise rotation after butt on anti-lock boss 85 in the removal process, can shift out the anti-lock boss 83 that is located on second cardboard 62 left this moment, removes the locking to locking subassembly 6, and locking subassembly 6 can be in the free rotation under the effect of external force.

In addition, be equipped with on the inner wall of lock body shell 1 and prevent revolving block 15, it is located to prevent revolving block 15 prevent locking boss 85 with the position between the first unblock boss 84 for the restriction the rotation angle of interior thumb wheel 81. When the inner cam 81 rotates counterclockwise, when the first unlocking boss 84 rotates to abut against the rotation stop block 15, the inner cam 81 cannot rotate counterclockwise, and the reverse locking boss 83 abuts against the middle portion of the second locking plate 62, so that the locking component 6 locks the turning tongue 3.

It should be noted that, in this embodiment, since the locking assembly 6 is located below the limiting groove member 4, the unlocking assembly 8 is disposed above the locking assembly 6, and the inversion tongue 3 is locked and unlocked in the above-described rotating manner. In other embodiments, if the locking assembly 6 is disposed above the limit groove member 4, the unlocking assembly 8 is disposed below the locking assembly 6, and the rotation direction of the unlocking assembly 8 is opposite to the above direction when the inversion tongue 3 is locked and unlocked.

The unlocking assembly 8 described above provides a structure that allows the lock body to be unlocked and unlocked at one side in the door. When the lock body needs to be unlocked outside the door, an outer dial peach 82 needs to be additionally arranged in the unlocking assembly 8. As shown in fig. 5, outer picks 82 are provided side by side on both sides of the inner picks 81. The outer peach 82 is also cylindrical in shape rotatable about its own axis, and is provided with a second unlocking boss 86 on its circumferential edge. When the inner cam 81 does not lock the locking component 6, the outer cam 82 is rotated clockwise, the second unlocking boss 86 on the outer cam can abut against the third clamping plate 63, and the outer cam continues to rotate to drive the locking component 6 to rotate counterclockwise around the pin shaft 14, so that the first clamping plate 61 can be screwed out of the limiting groove component 4, and the locking of the turnover tongue 3 is released. When the outer gear ring 82 is rotated counterclockwise, the second unlocking protrusion 86 abuts against the rotation stop block 15, thereby limiting the rotation angle of the outer gear ring 82.

In another embodiment, it is possible to provide only one outer dial 82 between the first housing 11 and the inner dial 81 for controlling the rotation of the outer dial 82 outside the door to unlock the turnover tongue 3; while in the door the turning tongue 3 can be locked or unlocked by controlling the rotation of the inner paddle 81.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. A lock body structure, comprising:

a lock body shell (1),

the lining plate (13) is arranged on the side part of the lock body shell (1) and is provided with a lock tongue hole (2);

the limiting groove component (4) is arranged on one side, close to the lock tongue hole (2), in the lock body shell (1), the opening end of the limiting groove component is opposite to the lock tongue hole (2), and a side hole (41) is formed in one side wall of the limiting groove component (4);

the turnover tongue (3) is arranged in the opening end of the limiting groove component (4) and can move along the length direction of the limiting groove component (4), a limiting convex block (36) is arranged on the side part of the turnover tongue (3), a clamping groove (35) is arranged at the rear end of the turnover tongue (3), a limiting clamping plate (37) with the length larger than the width of the turnover tongue (3) is arranged on the side wall of one side of the clamping groove (35) of the turnover tongue (3), and the front end of the turnover tongue (3) penetrates through a bolt locking hole (2) of the lining plate (13);

the positioning spring (5) is arranged in the limiting groove component (4), one end of the positioning spring is connected to the bottom surface of the limiting groove component (4), and the other end of the positioning spring exerts elastic force on the bottom surface of the clamping groove (35) of the turnover tongue (3);

the locking assembly (6) is rotatably arranged on a pin shaft (14) arranged on the lock body shell (1), and a first clamping plate (61) arranged at one end of the locking assembly (6) can penetrate through the side hole (41) of the limiting groove member (4) to extend into the limiting groove member (4) and abut against the limiting clamping plate (37); and

and the unlocking assembly (8) is arranged at the other end of the locking assembly (6) and controls the locking assembly (6) to rotate, so that the first clamping plate (61) of the locking assembly (6) moves downwards and is separated from the limiting clamping plate (37).

2. A lock body structure according to claim 1, characterized in that the unlocking assembly (8) comprises an inner tumbler (81), and that a counter locking boss (83) and a first unlocking boss (84) are provided at the periphery of the inner tumbler (81).

3. A lock body structure according to claim 2,

a second clamping plate (62) is arranged at the other end of the locking component (6), and one end of the second clamping plate (62) can abut against the side surface of the anti-locking boss (83);

and a third clamping plate (63) is arranged at the other end of the second clamping plate (62) in a protruding mode, and the third clamping plate (63) can abut against the side face of the first unlocking boss (84).

4. A lock body structure according to claim 2,

the anti-lock mechanism is characterized by further comprising a strip-shaped anti-lock strip plate (7), wherein the anti-lock strip plate (7) penetrates through a groove formed in the bottom surface of the limiting groove component (4) and stretches over the limiting groove component (4), a positioning plate capable of abutting against the bottom surface of a clamping groove (35) of the turnover tongue (3) is arranged at one end, extending into the limiting groove component (4), of the anti-lock strip plate (7), and the positioning spring (5) is connected to the positioning plate;

the periphery of interior thumb peach (81) still is equipped with prevents locking boss (85), prevent locking boss (85) can the butt in prevent the other end of locking slat (7).

5. A lock body structure according to claim 2, characterized in that the inner wall of the lock body housing (1) is provided with a rotation stopping block (15), and the rotation stopping block (15) is located at a position between the anti-lock boss (85) and the first unlocking boss (84) for limiting the rotation angle of the inner picks (81).

6. A lock body structure according to claim 3,

unblock subassembly (8) still include outer peach shifting (82), outer peach shifting (82) with interior peach shifting (81) coaxial arrangement the periphery of outer peach shifting (82) is equipped with can the butt in second unblock boss (86) of third cardboard (63).

7. A lock body structure according to any one of claims 1 to 6, characterized in that the bottom surface of the locking groove (35) near the inner wall of the lock body housing (1) is a cambered surface.

8. A lock body structure according to any of the claims 1 to 6, characterized in that a torsion spring (9) is also arranged on the pin (14), one torsion arm of which abuts against the inner wall of the lock body housing (1) and the other torsion arm of which is connected with the locking assembly (6) so as to apply an elastic force to one end of the locking assembly (6) which causes the first catch plate (61) to move towards the spacing groove member (4) side.

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