Transmission mechanism of lock body and lock body

Abstract

The utility model discloses a transmission mechanism of a lock body and the lock body, and the transmission mechanism comprises a transmission gear which is rotatably mounted on a lock shell, and the transmission gear is used for being matched with a shifting block and driving the shifting block to rotate to enable a main spring bolt assembly to extend out of or retract into the lock shell; the return gear is rotationally installed on the lock shell and meshed with the transmission gear, the return gear is provided with a positioning part and a driving part, the driving part is used for being matched with the locking block so that the locking block can be switched to the unlocking working position from the locking working position, and the positioning part is used for being matched with the first trigger switch; and the motor is used for directly driving or driving the return gear to rotate through a gear. The return gear not only has a positioning function, but also can drive the locking block to move by arranging the driving part, so that the locking block is switched to an unlocking working position; the motor of the transmission mechanism drives the transmission gear to rotate through the return gear, compared with the prior art, at least one gear can be omitted, and the structure is more compact.

Description

Technical Field

[0001] The utility model relates to the field of intelligent locks, and in particular to a transmission mechanism of a lock body and a lock body. Background Art

[0002] The lock body is the main component of the smart lock. The patent document with publication number CN 219471770 U discloses a lock body. In the lock body of the patent document, the motor drives the transmission gear to rotate through the transmission of multiple gears. In addition, it also has a return gear meshing with the transmission gear. The return gear is only used for positioning, and the position of the transmission gear is positioned by cooperating with the fourth trigger switch. There are many gears in the above patent document and the structure is not compact enough. Utility Model Content

[0003] In view of the above problems, the utility model provides a transmission mechanism of a lock body and a lock body.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A transmission mechanism of a lock body, the lock body comprises a lock shell, a main lock bolt mechanism, a shifting block installed on the lock shell for driving the main lock bolt mechanism to move, a latch bolt mechanism installed on the lock shell and a circuit board, a first trigger switch is installed on the circuit board, the latch bolt mechanism comprises a latch bolt assembly and a locking block matched with the latch bolt assembly, the locking block has a locking working position and an unlocking working position, and the transmission mechanism comprises:

[0006] A transmission gear is rotatably mounted on the lock housing, and the transmission gear is used to cooperate with the shift block to drive the shift block to rotate so that the main lock tongue assembly extends out of or retracts into the lock housing;

[0007] a return gear, rotatably mounted on the lock housing and meshing with the transmission gear, the return gear having a positioning portion and a driving portion, the driving portion being used to cooperate with the locking block so that the locking block can be switched from the locking working position to the unlocking working position, and the positioning portion being used to cooperate with the first trigger switch;

[0008] The motor is used for driving the return gear to rotate directly or through a gear.

[0009] The positioning part cooperates with the first trigger switch to achieve positioning, that is, positioning the transmission gear is achieved by positioning the return gear.

[0010] The return gear of the present application not only has a positioning function, but also can drive the locking block to move by setting a driving part, so that the locking block switches to the unlocking working position; the motor of the transmission mechanism of the present application drives the transmission gear to rotate through the return gear. Compared with the prior art, at least one gear can be omitted, and the structure is more compact.

[0011] In one embodiment of the present invention, the shift block is rotatably mounted on the lock housing, the rotation axis of the shift block coincides with the rotation axis of the transmission gear, and the shift block has a main lock tongue shifting portion, which is used to cooperate with the main lock tongue mechanism to drive the main lock tongue mechanism to move.

[0012] In one embodiment of the present invention, an idle structure is provided between the transmission gear and the shift block. The specific idle structure may adopt the relevant structure of the patent document with publication number CN215485278U.

[0013] In one embodiment of the utility model, a second trigger switch is installed on the circuit board, and the second trigger switch is a switch for bidirectional detection. The second trigger switch has a pressure-receiving portion, and the shift block has a first convex portion and a second convex portion. When the shift block rotates, the main lock tongue mechanism can be driven to slide through the main lock tongue shifting portion. The first convex portion and the second convex portion are used to cooperate with the second trigger switch respectively. When the main lock tongue mechanism passes through the lock shell, the first convex portion presses the pressure-receiving portion of the second trigger switch. When the main lock tongue mechanism retracts into the lock shell, the second convex portion presses the pressure-receiving portion of the second trigger switch. The first convex portion and the second convex portion press the pressure-receiving portion to rotate in different directions.

[0014] A dual-direction switch is able to detect two states with one sensor.

[0015] In one embodiment of the present invention, the pressure-receiving portion is located between the first convex portion and the second convex portion.

[0016] In actual use, the structure of the latch bolt assembly and the locking block may adopt the relevant structure of the patent document with publication number CN 219471770 U. In one embodiment of the utility model, the latch bolt assembly includes:

[0017] An inclined tongue plate is slidably disposed on the lock housing;

[0018] The inclined tongue is rotatably mounted on the inclined tongue plate and can rotate around a first rotation axis. The inclined tongue has a first working surface and a second working surface. The first working surface and the second working surface are arranged obliquely and are respectively located on both sides of the inclined tongue. The first rotation axis is parallel to the first working surface and the second working surface. The inclined tongue also has a first slide groove and a second slide groove. The first slide groove is arranged obliquely with the second working surface, and the second slide groove is arranged obliquely with the first working surface.

[0019] The inclined tongue plate resetting elastic member is used to make the inclined tongue and the inclined tongue plate have a movement tendency to move toward the outside of the lock housing;

[0020] The locking block is rotatably arranged on the lock housing, and the locking block is used to slidably cooperate with the first sliding groove or the second sliding groove when the locking working position is locked. When the locking block cooperates with the first sliding groove, the inclined tongue cannot rotate relative to the inclined tongue plate, and the inclined tongue and the inclined tongue plate can only slide along the length direction of the first sliding groove. At this time, the second working surface is inclined relative to the sliding direction of the inclined tongue; when the locking block cooperates with the second sliding groove, the inclined tongue cannot rotate relative to the inclined tongue plate, and the inclined tongue and the inclined tongue plate can only slide along the length direction of the second sliding groove. At this time, the first working surface is inclined relative to the sliding direction of the inclined tongue;

[0021] The lock body also includes a locking block reset elastic member, which is used to directly or indirectly cooperate with the locking block to keep the locking block in a state of sliding cooperation with the first sliding groove or the second sliding groove.

[0022] The inclined tongue can be rotated to realize the switching of two installation directions. When the inclined tongue is used as the first installation direction, the first slide groove cooperates with the locking block, and the inclined tongue can only slide along the length direction of the first slide groove. At this time, the second working surface is inclined relative to the door frame. When the door is closed, the second working surface cooperates with the door frame. Under the reaction force of the door frame, the inclined tongue can slide along the length direction of the first slide groove and retract the lock body; when the inclined tongue is used as the second installation direction (at this time, the position of the inclined tongue has rotated relative to when it is used as the first installation position), the second slide groove can cooperate with the corresponding structure in the lock body, and the inclined tongue can only slide along the length direction of the second slide groove. At this time, the first working surface is inclined relative to the door frame. When the door is closed, the first working surface cooperates with the door frame. Under the reaction force of the door frame, the inclined tongue can slide along the length direction of the second slide groove and retract the lock body. The present application uses a rotatable inclined tongue, combined with the locking block and the first working surface, the second working surface, the first slide groove and the second slide groove of the inclined tongue, to realize the switching of two installation directions more conveniently without removing or replacing the inclined tongue.

[0023] In one embodiment of the present invention, the lock body further includes a trigger tongue assembly and a trigger tongue resetting elastic member;

[0024] The trigger tongue assembly is movably arranged on the lock housing and can extend out of the lock housing and retract into the lock housing. The trigger tongue assembly has an unlocking portion. When the trigger tongue assembly extends out of the lock housing, the unlocking portion applies a force to the locking block to overcome the force of the locking block reset elastic member, so that the locking block is in an unlocking working position. At this time, the locking block is disengaged from the first slide groove and the second slide groove, and the locking block can rotate relative to the inclined tongue plate after being pressed; when the trigger tongue assembly retracts into the lock housing, the locking block moves under the action of the locking block reset elastic member, and the locking block is in a locking working position, and the locking block cooperates with the first slide groove or the second slide groove;

[0025] The trigger tongue resetting elastic member cooperates with the trigger tongue assembly to enable the trigger tongue assembly to have a movement tendency of extending out of the lock housing.

[0026] This arrangement can automatically drive the locking block to move through the cooperation of the trigger tongue assembly and the locking block reset elastic member, without manual adjustment. Regardless of the direction in which it is installed, the trigger tongue assembly extends out of the lock housing before closing the door, and the locking block is disengaged from the first slide slot or the second slide slot. The lock tongue can automatically rotate and switch after receiving the reaction force of the door frame. When the trigger tongue assembly retracts into the lock housing, the locking block cooperates with the corresponding slide slot under the action of the locking block reset elastic member to lock the oblique tongue (the oblique tongue cannot rotate).

[0027] In one embodiment of the utility model, the locking block has a first matching portion, a second matching portion and a third matching portion, the first matching portion and the second matching portion are on both sides of the rotation axis of the locking block, the first matching portion is used to match with the first slide groove or the second slide groove, the second matching portion is used to match with the driving portion of the return gear, and the third matching portion is used to match with the unlocking portion of the trigger tongue assembly.

[0028] In one embodiment of the utility model, the inclined tongue plate reset elastic member is a compression spring, a tension spring, a torsion spring or a spring sheet, the locking block reset elastic member is a compression spring, a tension spring, a torsion spring or a spring sheet, and the trigger tongue reset elastic member is a compression spring, a tension spring, a torsion spring or a spring sheet.

[0029] In one embodiment of the present invention, a driving gear is fixed on the output shaft of the motor, and the driving gear is meshed with the return gear.

[0030] The present application also discloses a lock body, comprising the transmission mechanism of the lock body described above.

[0031] The beneficial effects of the utility model are as follows: the return gear of the present application not only has a positioning function, but also can drive the locking block to move by setting a driving part, so that the locking block switches to the unlocking working position; the motor of the transmission mechanism of the present application drives the transmission gear to rotate through the return gear. Compared with the prior art, at least one gear can be omitted, and the structure is more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the lock body in the locked door state;

[0033] Figure 2 This is a schematic diagram of the main structure of the circuit board hidden in the locked state;

[0034] Figure 3 This is a schematic diagram from another angle after the main structure of the circuit board is hidden in the locked state;

[0035] Figure 4 It is a schematic diagram of the lock body behind the hidden lock case;

[0036] Figure 5It is a schematic diagram of the oblique tongue mechanism, the trigger tongue assembly and the trigger tongue resetting elastic member;

[0037] Figure 6 is a schematic diagram of the latch mechanism;

[0038] Figure 7 It is a schematic diagram of the latch mechanism from another angle;

[0039] Figure 8 It is a schematic diagram of the lock body in the unlocked but unopened state;

[0040] Fig. 9 It is a schematic diagram of the lock body in the open door state;

[0041] Fig.10 This is a schematic diagram of the lock body at another angle when the door is open;

[0042] Fig.11 This is a schematic diagram of the door locking process.

[0043] The reference numerals in the figures are:

[0044] 1. Lock housing; 2. Main lock tongue mechanism; 3. Push block; 31. Main lock tongue push part; 32. First protrusion; 33. Second protrusion; 4. Oblique tongue assembly; 41. Oblique tongue plate; 42. Oblique tongue; 421. First working surface; 422. Second working surface; 423. First slide groove; 424. Second slide groove; 5. Lock block; 51. First matching part; 52. Second matching part; 53. Third matching part; 6. Circuit board; 61. First trigger switch; 62. Second trigger switch ; 621, pressure-bearing part; 63, first detection switch; 631, trigger head; 64, second detection switch; 71, transmission gear; 72, return gear; 721, positioning part; 722, driving part; 73, motor; 731, driving gear; 81, trigger tongue assembly; 811, unlocking part; 82, trigger tongue assembly reset elastic member; 9, trigger plate; 91, first contact part; 92, second contact part; 93, third contact part; 10, locking block reset elastic member. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0047] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] The utility model is described in detail below in conjunction with the accompanying drawings.

[0049] like Figures 1 to 11 The present embodiment discloses a lock body, including a lock shell 1, a main lock bolt mechanism 2, a shift block 3 installed on the lock shell 1 for driving the main lock bolt mechanism 2 to move, a latch bolt mechanism installed on the lock shell 1 and a circuit board 6, a first trigger switch 61 is installed on the circuit board 6, the latch bolt mechanism includes a latch bolt assembly 4 and a locking block 5 matched with the latch bolt assembly 4, and the locking block 5 has a locking working position and an unlocking working position.

[0050] like Figure 2 , Figure 4 and Figure 8 As shown, the lock body also includes:

[0051] The transmission gear 71 is rotatably mounted on the lock housing 1. The transmission gear 71 is used to cooperate with the shift block 3 to drive the shift block 3 to rotate so that the main lock tongue assembly extends out or retracts into the lock housing 1;

[0052] The return gear 72 is rotatably mounted on the lock housing 1 and meshes with the transmission gear 71. The return gear 72 has a positioning portion 721 and a driving portion 722. The driving portion 722 is used to cooperate with the locking block 5 so that the locking block 5 can be switched from the locking working position to the unlocking working position. The positioning portion 721 is used to cooperate with the first trigger switch 61.

[0053] The motor 73 is used to directly drive the return gear 72 to rotate or drive it through a gear.

[0054] The positioning portion 721 cooperates with the first trigger switch 61 to achieve positioning, that is, positioning the transmission gear 71 is achieved by positioning the return gear 72 .

[0055] The return gear 72 of the present application not only has a positioning function, but also can drive the locking block 5 to move by setting a driving part 722, so that the locking block 5 switches to the unlocking working position; the motor 73 of the transmission mechanism of the present application drives the transmission gear 71 to rotate through the return gear 72. Compared with the prior art, at least one gear can be omitted, and the structure is more compact.

[0056] In this embodiment, the shift block 3 is rotatably mounted on the lock housing 1, the rotation axis of the shift block 3 coincides with the rotation axis of the transmission gear 71, and the shift block 3 has a main lock tongue shifting portion 31, which is used to cooperate with the main lock tongue mechanism 2 to drive the main lock tongue mechanism 2 to move. An idle rotation structure is provided between the transmission gear 71 and the shift block 3, and the specific idle rotation structure can adopt the relevant structure of the patent document with publication number CN215485278U.

[0057] like Figure 1 and Figure 8 As shown, in this embodiment, a second trigger switch 62 is installed on the circuit board 6. The second trigger switch 62 is a switch for bidirectional detection. The second trigger switch 62 has a pressed portion 621. The shift block 3 has a first convex portion 32 and a second convex portion 33. When the shift block 3 rotates, the main lock tongue mechanism 2 can be driven to slide through the main lock tongue shifting portion 31. The first convex portion 32 and the second convex portion 33 are used to cooperate with the second trigger switch 62 respectively. When the main lock tongue mechanism 2 passes through the lock shell 1, the first convex portion 32 presses the pressed portion 621 of the second trigger switch 62. When the main lock tongue mechanism 2 retracts into the lock shell 1, the second convex portion 33 presses the pressed portion 621 of the second trigger switch 62. The first convex portion 32 and the second convex portion 33 press the pressed portion 621 to rotate in different directions.

[0058] A dual-direction switch is able to detect two states with one sensor.

[0059] In this embodiment, the pressed portion 621 is located between the first protrusion 32 and the second protrusion 33 .

[0060] In actual use, the structure of the latch bolt assembly 4 and the locking block 5 can adopt the relevant structure of the patent document with publication number CN 219471770 U. Figure 2 , Figure 6 and Figure 7 As shown, in this embodiment, the latch bolt assembly 4 includes:

[0061] The inclined tongue plate 41 is slidably disposed on the lock housing 1;

[0062] The inclined tongue 42 is rotatably mounted on the inclined tongue plate 41 and can rotate around a first rotation axis. The inclined tongue 42 has a first working surface 421 and a second working surface 422. The first working surface 421 and the second working surface 422 are arranged obliquely and are respectively located on both sides of the inclined tongue 42. The first rotation axis is parallel to the first working surface 421 and the second working surface 422. The inclined tongue 42 also has a first slide groove 423 and a second slide groove 424. The first slide groove 423 is arranged obliquely with the second working surface 422, and the second slide groove 424 is arranged obliquely with the first working surface 421.

[0063] The inclined tongue plate resetting elastic member (omitted and not shown in the figure) is used to make the inclined tongue 42 and the inclined tongue plate 41 have a movement tendency to move toward the outside of the lock housing 1;

[0064] The locking block 5 is rotatably arranged on the lock housing 1. The locking block 5 is used to slide and cooperate with the first sliding groove 423 or the second sliding groove 424 when the locking working position is locked. When the locking block 5 cooperates with the first sliding groove 423, the inclined tongue 42 cannot rotate relative to the inclined tongue plate 41, and the inclined tongue 42 and the inclined tongue plate 41 can only slide along the length direction of the first sliding groove 423. At this time, the second working surface 422 is tilted relative to the sliding direction of the inclined tongue 42; when the locking block 5 cooperates with the second sliding groove 424, the inclined tongue 42 cannot rotate relative to the inclined tongue plate 41, and the inclined tongue 42 and the inclined tongue plate 41 can only slide along the length direction of the second sliding groove 424. At this time, the first working surface 421 is tilted relative to the sliding direction of the inclined tongue 42;

[0065] like Figure 1 , Figure 6 and Figure 7 As shown, the lock body further includes a locking block reset elastic member 10, which is used to directly or indirectly cooperate with the locking block 5 to keep the locking block 5 in a state of sliding cooperation with the first sliding groove 423 or the second sliding groove 424.

[0066] The inclined tongue 42 can rotate to realize switching between two installation directions. When the inclined tongue 42 is used as the first installation direction, the first slide groove 423 cooperates with the locking block 5, and the inclined tongue 42 can only slide along the length direction of the first slide groove 423. At this time, the second working surface 422 is inclined relative to the door frame. When the door is closed, the second working surface 422 cooperates with the door frame. Under the reaction force of the door frame, the inclined tongue 42 can slide along the length direction of the first slide groove 423 and retract the lock body; when the inclined tongue 42 is used as the second installation direction (at this time, the position of the inclined tongue 42 has rotated relative to when it is used as the first installation position), the second slide groove 424 can cooperate with the corresponding structure in the lock body, and the inclined tongue 42 can only slide along the length direction of the second slide groove 424. At this time, the first working surface 421 is inclined relative to the door frame. When the door is closed, the first working surface 421 cooperates with the door frame. Under the reaction force of the door frame, the inclined tongue 42 can slide along the length direction of the second slide groove 424 and retract the lock body. The present application uses a rotatable inclined tongue 42, combined with a locking block 5 and the first working surface 421, the second working surface 422, the first slide groove 423 and the second slide groove 424 of the inclined tongue 42, so that the two installation directions can be switched more conveniently without removing or replacing the inclined tongue 42.

[0067] like Figure 1 and Figure 5 As shown, in this embodiment, the lock body further includes a trigger tongue assembly 81 and a trigger tongue assembly reset elastic member 82;

[0068] The trigger tongue assembly 81 is movably arranged on the lock housing 1, and can extend out of the lock housing 1 and retract into the lock housing 1. The trigger tongue assembly 81 has an unlocking portion 811. When the trigger tongue assembly 81 extends out of the lock housing 1, the unlocking portion 811 applies a force to the locking block 5 to overcome the force of the locking block reset elastic member 10, so that the locking block 5 is in the unlocking working position. At this time, the locking block 5 is disengaged from the first slide groove 423 and the second slide groove 424. The locking block 5 can rotate relative to the inclined tongue plate 41 after being pressed; when the trigger tongue assembly 81 retracts into the lock housing 1, the locking block 5 moves under the action of the locking block reset elastic member 10, and the locking block 5 is in the locking working position, and the locking block 5 cooperates with the first slide groove 423 or the second slide groove 424;

[0069] The trigger tongue assembly reset elastic member 82 cooperates with the trigger tongue assembly 81 to enable the trigger tongue assembly 81 to have a movement tendency of extending out of the lock housing 1 .

[0070] This arrangement can automatically drive the locking block 5 to move through the cooperation of the trigger tongue assembly 81 and the locking block reset elastic member 10, without manual adjustment. Regardless of the installation direction, the trigger tongue assembly 81 extends out of the lock housing 1 before closing the door, and the locking block 5 is disengaged from the first slide groove 423 or the second slide groove 424. The lock tongue can automatically rotate and switch after receiving the reaction force of the door frame. When the trigger tongue assembly 81 retracts into the lock housing 1, under the action of the locking block reset elastic member 10, the locking block 5 cooperates with the corresponding slide groove to lock the oblique tongue 42 (the oblique tongue 42 cannot rotate).

[0071] like Figure 5 As shown, in this embodiment, the locking block 5 has a first matching portion 51, a second matching portion 52 and a third matching portion 53. The first matching portion 51 and the second matching portion 52 are on both sides of the rotation axis of the locking block 5. The first matching portion 51 is used to match with the first slide groove 423 or the second slide groove 424, the second matching portion 52 is used to match with the driving portion 722 of the return gear 72, and the third matching portion 53 is used to match with the unlocking portion 811 of the trigger tongue assembly 81.

[0072] In this embodiment, each resetting elastic member is a compression spring, a tension spring, a torsion spring or a spring sheet.

[0073] like Figure 4 As shown, in this embodiment, a driving gear 731 is fixed on the output shaft of the motor 73 , and the driving gear 731 is meshed with the return gear 72 .

[0074] like Figure 2 , 5 As shown in , 8 to 11, in this embodiment, the lock body further includes a trigger plate 9, which is rotatably mounted on the lock housing 1. The trigger plate 9 has a first contact portion 91, a second contact portion 92 and a third contact portion 93. The trigger plate 9 has a triggering working position and a non-triggering working position. When the trigger plate 9 is in the triggering working position, the first contact portion 91 cooperates with the trigger head 631 of the first detection switch 63 to trigger the first detection switch 63. When the trigger plate 9 is in the non-triggering working position, the first contact portion 91 does not trigger the first detection switch 63. The inclined tongue assembly 4 is used to cooperate with the second contact portion 92. When the inclined tongue assembly 4 is retracted into the lock housing 1, the inclined tongue assembly 4 contacts the second contact portion 92 and drives the trigger plate 9 to switch to the non-triggering working position. When the locking block 5 is in the unlocking working position, the locking block 5 contacts the second contact portion 92 and drives the trigger plate 9 to switch to the non-triggering working position. The present application provides a trigger plate 9 rotatably mounted on the lock housing 1, so that the latch bolt assembly 4 and the locking block 5 share the first detection switch 63. Compared with the prior art, a trigger switch is omitted, which can save costs. In actual use, when the locking block 5 is in the locking working position, the trigger plate 9 is in the triggering working position, and when the latch bolt assembly 4 extends out of the lock housing 1, the trigger plate 9 is in the triggering working position.

[0075] like Figure 2 and 3 As shown, in this embodiment, a second detection switch 64 is installed on the circuit board 6, and the second detection switch 64 cooperates with the trigger tongue assembly 81 to detect the state of the trigger tongue assembly 81 extending out of the lock housing 1 or retracting into the lock housing 1.

[0076] In actual use, a trigger plate reset elastic member (omitted and not shown in the figure) may also be included, and the trigger plate reset elastic member is used to make the trigger plate 9 have a rotation tendency to rotate toward the trigger working position.

[0077] In this embodiment, the first detection switch 63 is used to disengage the inclined tongue assembly 4 backward and unlock the locking block 5, anyway, the first check switch is pressed; the second detection switch 64 is used to trigger the tongue assembly 81 to extend or retract into the lock housing 1; the first trigger switch 61 is used to determine the stop position of the transmission gear 71; the second trigger switch 62 is used to detect whether the main lock tongue is in place.

[0078] When the lock body of this embodiment is working, the motor 73 drives the return gear 72 to rotate, and the return gear 72 drives the locking block 5 to rotate, and the locking block 5 disengages from the slide groove. At this time, the inclined tongue 42 can rotate and retreat; while the return gear 72 drives the locking block 5 to rotate, it drives the shifting block 3 to rotate, and the shifting block 3 drives the main lock tongue mechanism 2 to extend or retract the lock shell 1.

[0079] The above description is only a preferred embodiment of the utility model, and does not limit the patent protection scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the utility model.

Claims

1. A transmission mechanism of a lock body, the lock body comprises a lock shell, a main lock bolt mechanism, a shift block mounted on the lock shell for driving the main lock bolt mechanism to move, a latch bolt mechanism mounted on the lock shell and a circuit board, a first trigger switch is mounted on the circuit board, the latch bolt mechanism comprises a latch bolt assembly and a locking block matched with the latch bolt assembly, the locking block has a locking working position and an unlocking working position, and is characterized in that: The transmission mechanism includes: A transmission gear is rotatably mounted on the lock housing, and the transmission gear is used to cooperate with the shift block to drive the shift block to rotate so that the main lock tongue assembly extends out of or retracts into the lock housing; a return gear, rotatably mounted on the lock housing and meshing with the transmission gear, the return gear having a positioning portion and a driving portion, the driving portion being used to cooperate with the locking block so that the locking block can be switched from the locking working position to the unlocking working position, and the positioning portion being used to cooperate with the first trigger switch; The motor is used for driving the return gear to rotate directly or through a gear.

2. The transmission mechanism of the lock body according to claim 1, characterized in that: The shift block is rotatably mounted on the lock housing, the rotation axis of the shift block coincides with the rotation axis of the transmission gear, and the shift block has a main lock tongue shifting portion, which is used to cooperate with the main lock tongue mechanism to drive the main lock tongue mechanism to move.

3. The transmission mechanism of the lock body according to claim 2, characterized in that: A second trigger switch is installed on the circuit board. The second trigger switch is a switch for bidirectional detection. The second trigger switch has a pressed portion. The shift block has a first convex portion and a second convex portion. When the shift block rotates, the main lock tongue mechanism can be driven to slide through the main lock tongue shifting portion. The first convex portion and the second convex portion are used to cooperate with the second trigger switch respectively. When the main lock tongue mechanism passes through the lock shell, the first convex portion presses the pressed portion of the second trigger switch. When the main lock tongue mechanism retracts into the lock shell, the second convex portion presses the pressed portion of the second trigger switch. The first convex portion and the second convex portion press the pressed portion to rotate in different directions.

4. The transmission mechanism of the lock body according to claim 3, characterized in that: The pressure receiving portion is located between the first convex portion and the second convex portion.

5. The transmission mechanism of the lock body according to claim 1, characterized in that: The latch bolt assembly comprises: An inclined tongue plate is slidably disposed on the lock housing; The inclined tongue is rotatably mounted on the inclined tongue plate and can rotate around a first rotation axis. The inclined tongue has a first working surface and a second working surface. The first working surface and the second working surface are arranged obliquely and are respectively located on both sides of the inclined tongue. The first rotation axis is parallel to the first working surface and the second working surface. The inclined tongue also has a first slide groove and a second slide groove. The first slide groove is arranged obliquely with the second working surface, and the second slide groove is arranged obliquely with the first working surface. The inclined tongue plate resetting elastic member is used to make the inclined tongue and the inclined tongue plate have a movement tendency to move toward the outside of the lock housing; The locking block is rotatably arranged on the lock housing, and the locking block is used to slidably cooperate with the first sliding groove or the second sliding groove when the locking working position is locked. When the locking block cooperates with the first sliding groove, the inclined tongue cannot rotate relative to the inclined tongue plate, and the inclined tongue and the inclined tongue plate can only slide along the length direction of the first sliding groove. At this time, the second working surface is inclined relative to the sliding direction of the inclined tongue; when the locking block cooperates with the second sliding groove, the inclined tongue cannot rotate relative to the inclined tongue plate, and the inclined tongue and the inclined tongue plate can only slide along the length direction of the second sliding groove. At this time, the first working surface is inclined relative to the sliding direction of the inclined tongue; The lock body also includes a locking block reset elastic member, which is used to directly or indirectly cooperate with the locking block to keep the locking block in a state of sliding cooperation with the first sliding groove or the second sliding groove.

6. The transmission mechanism of the lock body according to claim 5, characterized in that: The lock body also includes a trigger tongue assembly and a trigger tongue resetting elastic member; The trigger tongue assembly is movably arranged on the lock housing and can extend out of the lock housing and retract into the lock housing. The trigger tongue assembly has an unlocking portion. When the trigger tongue assembly extends out of the lock housing, the unlocking portion applies a force to the locking block to overcome the force of the locking block reset elastic member, so that the locking block is in an unlocking working position. At this time, the locking block is disengaged from the first slide groove and the second slide groove, and the locking block can rotate relative to the inclined tongue plate after being pressed. When the trigger tongue assembly retracts into the lock housing, the locking block moves under the action of the locking block reset elastic member, the locking block is in the locking working position, and the locking block cooperates with the first sliding groove or the second sliding groove; The trigger tongue resetting elastic member cooperates with the trigger tongue assembly to enable the trigger tongue assembly to have a movement tendency of extending out of the lock housing.

7. The transmission mechanism of the lock body according to claim 6, characterized in that: The locking block has a first matching portion, a second matching portion and a third matching portion, the first matching portion and the second matching portion are on both sides of the rotation axis of the locking block, the first matching portion is used to match with the first sliding groove or the second sliding groove, the second matching portion is used to match with the driving portion of the return gear, and the third matching portion is used to match with the unlocking portion of the trigger tongue assembly.

8. The transmission mechanism of the lock body according to claim 7, characterized in that: The inclined tongue plate reset elastic member is a compression spring, a tension spring, a torsion spring or a spring sheet, the locking block reset elastic member is a compression spring, a tension spring, a torsion spring or a spring sheet, and the trigger tongue reset elastic member is a compression spring, a tension spring, a torsion spring or a spring sheet.

9. The transmission mechanism of the lock body according to claim 1, characterized in that: A driving gear is fixed on the output shaft of the motor, and the driving gear is meshed with the return gear.

10. A lock body, characterized in that: A transmission mechanism comprising the lock body as claimed in any one of claims 1 to 9.

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