Counter locking device and spherical lock

Abstract

The back locking device comprises a middle frame, a handle seat assembly, a ball lock shell, a clutch assembly and a rotary knob assembly, the middle frame is provided with an installation hole and two first inserting grooves formed in the inner wall of the installation hole, the handle seat assembly is rotationally installed on the installation hole and provided with two second inserting grooves, and the ball lock shell and the clutch assembly are connected through the second inserting grooves. One part of the second slot and the first slot can be enclosed to form a clamping cavity; the ball lock shell is fixed to the handle base assembly, the ball lock shell and the handle base assembly define a containing space, the ball lock shell is provided with an embedding hole communicating with the containing space and two third inserting grooves, and the other part of each second inserting groove and the corresponding third inserting groove define a guide channel; the clutch assembly comprises an elastic piece and a clutch piece, the clutch piece comprises a clutch body and two supporting arms which are both arranged on the clutch body in a protruding mode, the elastic piece is arranged between the clutch body and the handle base assembly in a clamped mode, and the two supporting arms are inserted into the two guide channels respectively; one end of the knob assembly is connected with the clutch piece, and the other end of the knob assembly penetrates through the embedding hole and then protrudes out of the ball lock shell.

Description

Technical Field

[0001] This utility model relates to the field of door lock structure technology, and in particular to a deadbolt device and a spherical lock. Background Technology

[0002] Currently, for doors equipped with spherical locks, after closing the door, pressing the deadbolt button on the inside of the spherical lock will put the spherical lock in a deadbolt state. At this time, if a person outside does not have the key, they will not be able to open the spherical lock.

[0003] However, if someone else finds the key or makes a duplicate, they can use it to open a door with a spherical lock that is locked from the inside. This poses a threat to the life and property of people inside, making the spherical lock very unsafe to use. Utility Model Content

[0004] The purpose of this utility model is to provide a deadbolt device and a spherical lock to solve the technical problem that if someone finds the key or makes a duplicate key, they can use the key to open the door with the spherical lock in the deadbolt state, which poses a threat to the life and property of people inside the room and makes the spherical lock very unsafe to use.

[0005] This utility model provides a locking device, including:

[0006] The middle frame is used to be installed on the door panel. The middle frame is provided with mounting holes and two opposing first slots, both of which are recessed into the inner wall of the mounting holes.

[0007] A handle base assembly is rotatably mounted on the mounting hole. The outer side wall of the handle base assembly is provided with two second slots. A portion of the second slot can be connected to the first slot and surround the first slot to form a laterally positioned retaining cavity.

[0008] A ball lock housing is fixed to the handle base assembly and surrounds the handle base assembly to form a receiving space. The ball lock housing is provided with an insert hole and two third slots. The second slot, the insert hole and the third slots are all in communication with the receiving space. Another part of the second slot is in communication with the third slot and surrounds the third slot to form a guide channel.

[0009] A clutch assembly, comprising an elastic element and a clutch element, the clutch element comprising a clutch body and two support arms protruding from the clutch body, the elastic element and the clutch body being located within the receiving space, the clutch element being inserted into the handle seat assembly and being able to rotate with the handle seat assembly, the elastic element being clamped between the clutch body and the handle seat assembly, and the two support arms being respectively inserted into the two guide channels;

[0010] A knob assembly, one end of which is connected to the clutch, and the other end protruding from the ball lock housing after passing through the mounting hole. When locking is required, rotating the knob assembly drives the clutch to move linearly toward the middle frame, compressing the elastic element and inserting the two support arms into the two retaining cavities respectively. When unlocking is required, rotating the knob assembly in the opposite direction resets the clutch under the elastic recovery of the elastic element, and disengages the two support arms from the two retaining cavities respectively.

[0011] Furthermore, the clutch body includes a main body and two pressure heads. The two support arms protrude from both ends of the outer wall of the clutch body, and the two pressure heads protrude from the two support arms. The elastic element is sandwiched between the main body and the handle seat assembly. The knob assembly has two track grooves on the side facing the middle frame. The two pressure heads slide on the two track grooves respectively. When the knob assembly is rotated, the pressure heads can move along the corresponding track grooves to the knob assembly outside the track grooves, and the knob assembly drives the clutch to move in a straight line. When the knob assembly is rotated in the opposite direction, the pressure heads can return to the corresponding track grooves, and the clutch is reset under the elastic recovery action of the elastic element.

[0012] Furthermore, the ball lock housing is also provided with a limiting cavity, the mounting hole is connected to one end of the limiting cavity, and both of the third slots are recessed on the inner wall of the other end of the limiting cavity;

[0013] The handle seat assembly is also provided with a positioning groove and two oppositely arranged notches. The positioning groove is located on the side of the handle seat assembly away from the middle frame. The second slot communicates with the positioning groove through the corresponding notch. The handle seat assembly is installed on the limiting cavity. The limiting cavity, the positioning groove, and the two notches constitute the receiving space. The main body abuts against the elastic element in the positioning groove. The support arm is "L" shaped. One end of the support arm is connected to the main body, and the other end passes through the corresponding notch and is located in the guide channel.

[0014] Furthermore, the knob assembly includes a drive shaft and a button. The drive shaft is located within the receiving space, and both of the track grooves are provided on the drive shaft. One end of the button is located within the receiving space and is fixedly connected to the drive shaft, while the other end passes through the mounting hole and protrudes outside the ball lock housing.

[0015] Furthermore, the drive shaft includes a shaft body and two spaced arc-shaped plates. Both arc-shaped plates protrude from one end of the shaft body, and the button is installed on the other end of the shaft body. Each arc-shaped plate has an arc-shaped surface. The arc-shaped surface on one arc-shaped plate, part of the shaft body, and the outer end face of the other arc-shaped plate enclose and form the track groove.

[0016] Furthermore, the drive shaft also includes a limiting block protruding from the outer wall of the shaft body, and the ball lock housing is also provided with an arc-shaped limiting groove, the limiting groove being recessed on the inner wall of the accommodating space, and the limiting block being slidably installed in the limiting groove.

[0017] Furthermore, the handle seat assembly includes a nut, a toggle member, a torsion spring, and a handle connecting shaft. The torsion spring has a first through hole and is sleeved on the middle frame through the first through hole. The torsion spring is sandwiched between the toggle member and the middle frame. The toggle member has a second through hole. One end of the handle connecting shaft is connected to the ball lock housing and surrounds the ball lock housing to form the receiving space. The other end of the handle connecting shaft passes through the mounting hole and the second through hole in sequence and is connected to the nut. The positioning groove, the two notch grooves, and the two second slots are all provided on the handle connecting shaft.

[0018] Furthermore, the torsion spring includes a torsion spring body and two torsion ends both connected to the torsion spring body, and the first through hole is provided on the torsion spring body;

[0019] The actuating component includes a paddle, a stop plate, and two blocks that are vertically connected to both ends of the paddle. The second through hole is provided on the paddle, and the stop plate protrudes from the inner wall of the second through hole.

[0020] The middle frame includes a frame body, a boss, and two protrusions. The boss and the protrusions are both protruding on one side of the frame body. The mounting hole passes through the boss and the frame body in sequence. The torsion spring is sleeved on the boss through the first through hole. The handle connecting shaft is also provided with two oppositely arranged stop grooves. The limiting block is inserted into one of the stop grooves. The two stop blocks and the two protrusions are all located on the same side of the two torsion ends, and the two torsion ends abut against the two stop blocks respectively. The stop blocks are located between the protrusions and the torsion spring body.

[0021] Furthermore, the handle connecting shaft includes a handle shaft and an annular retaining ring protruding from the outer wall of the handle shaft. One end of the handle shaft is connected to the ball lock housing, and the other end of the handle shaft passes through the mounting hole and the second through hole in sequence and is connected to the nut. The annular retaining ring abuts against the outer wall of the middle frame. The handle shaft is provided with an external thread, the stop groove, the positioning groove, two notch grooves and two second slots. The nut is installed on the external thread, and the second slot extends from the end of the handle shaft away from the nut through the annular retaining ring and recessed towards the middle of the handle shaft.

[0022] This utility model also provides a spherical lock, including the anti-locking device as described above.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] In this invention, when the deadbolt needs to be locked, rotating the knob assembly drives the clutch to move linearly towards the middle frame, compressing the elastic element. The two arms on the clutch insert into the two retaining cavities, causing the handle seat assembly to engage with the middle frame along with the clutch, preventing the handle seat assembly from rotating. Even if someone outside uses a key, they cannot open the spherical lock, thus achieving the purpose of locking from the inside. When unlocking is required, rotating the knob assembly in the opposite direction resets the clutch under the elastic recovery action of the elastic element. The two arms disengage from the two retaining cavities, separating the clutch from the middle frame. The handle seat assembly resumes rotation, and rotating the spherical lock housing drives the handle seat assembly to rotate, thereby opening the spherical lock. This invention offers advantages in cost, simple structure, and effective protection of life and property indoors. It is safe, reliable, and has broad market prospects. Attached Figure Description

[0025] Figure 1 Schematic diagram of the structure of the locking device provided in the embodiment of this utility model Figure 1 ;

[0026] Figure 2 A cross-sectional view of the locking device provided in an embodiment of this utility model;

[0027] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0028] Figure 4 Explosion of the locking device provided in the embodiment of this utility model Figure 1 ;

[0029] Figure 5 A cross-sectional view of the combined middle frame, handle connecting shaft, and ball lock housing provided in an embodiment of this utility model;

[0030] Figure 6Schematic diagram of the structure of the locking device provided in the embodiment of this utility model Figure 2 ;

[0031] Figure 7 Explosion of the locking device provided in the embodiment of this utility model Figure 2 ;

[0032] Figure 8 This is a schematic diagram of the structure of the middle frame provided in an embodiment of the present utility model;

[0033] Figure 9 This is a schematic diagram of the clutch component provided in an embodiment of the present utility model;

[0034] Figure 10 A schematic diagram of the transmission shaft provided in an embodiment of this utility model;

[0035] Figure 11 This is a schematic diagram of the structure of the handle connecting shaft provided in an embodiment of the present utility model;

[0036] Figure 12 A schematic diagram of the handle cover provided in an embodiment of this utility model;

[0037] Figure 13 A schematic diagram of the structure of the spherical hand cover provided in this embodiment of the utility model;

[0038] Figure 14 This is a schematic diagram of the structure of the toggle member provided in an embodiment of the present utility model.

[0039] In the picture:

[0040] 10. Middle frame; 11. Mounting hole; 12. First slot; 13. Frame; 14. Boss; 15. Protrusion; 16. First receiving groove; 17. Second receiving groove; 20. Handle seat assembly; 21. Second slot; 22. Positioning groove; 23. Notch groove; 24. First threaded hole; 25. Nut; 26. Actuator; 261. Second through hole; 262. Paddle; 263. Stop plate; 264. 27. Stop block; 271. Torsion spring; 272. First through hole; 273. Torsion spring body; 274. Torsion end; 28. Handle connecting shaft; 281. Handle shaft; 2811. Stop groove; 2812. External thread; 282. Annular retaining ring; 283. Square groove; 29. ​​Plum blossom washer; 291. Fourth through hole; 292. Bushing; 2921. Third through hole; 30. Ball lock housing; 31. Insertion hole; 32. 33. Third slot; 34. Limiting cavity; 35. Limiting groove; 36. First fastener; 37. Handle cover; 38. Through hole; 39. First through hole; 30. Second through hole; 31. Spherical hand cover; 32. Recessed cavity; 33. U-shaped groove; 44. Second threaded hole; 45. Second fastener; 46. Clutch assembly; 47. Elastic element; 48. Clutch component; 49. Clutch body; 40. 11. Main body; 4212. Top pressure head; 422. Support arm; 50. Knob assembly; 51. Track groove; 52. Drive shaft; 521. Shaft body; 522. Arc plate; 5221. Arc surface; 523. Limiting block; 524. Receiving cavity; 525. Third through hole; 53. Button key; 54. Third fastener; 55. Spring pad; 60. Holding cavity; 70. Receiving space; 80. Guide channel. Detailed Implementation

[0041] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0042] Please see Figures 1 to 12 As shown in the figure, this utility model embodiment discloses a deadbolt device, which is mainly used in a spherical lock. The deadbolt device is located on the indoor side to achieve the purpose of deadbolting the door panel.

[0043] The deadbolt device includes a middle frame 10, a handle base assembly 20, a ball lock housing 30, a clutch assembly 40, and a knob assembly 50. The middle frame 10 is used to install on the door panel. The middle frame 10 has a mounting hole 11 and two opposing first slots 12. Both first slots 12 are recessed on the inner wall of the mounting hole 11. The cross-section of the first slot 12 is an "L" shape. The handle base assembly 20 is rotatably installed on the mounting hole 11. The outer wall of the handle base assembly 20 has two opposing second slots 21. The cross-section of the second slots 21 is an "L" shape. In the initial state, when the handle base assembly 20 is not rotated, a part of the second slot 21 can be opposite to and connected to the first slot 12. A part of the second slot 21 and the first slot 12 enclose a lateral locking cavity 60. When the handle base assembly 20 is rotated, the second slot 21 and the first slot 12 are staggered and no longer connected.

[0044] The ball lock housing 30 is fixed to the handle seat assembly 20 and forms a receiving space 70 with the handle seat assembly 20. The ball lock housing 30 can drive the handle seat assembly 20 to rotate together. The ball lock housing 30 is provided with an insert hole 31 and two third slots 32. The insert hole 31 and the third slots 32 are located on both sides of the ball lock housing 30. The cross-section of the third slot 32 is an "L" shaped structure. The second slot 21, the insert hole 31 and the third slot 32 are all connected to the receiving space 70. The other part of the second slot 21 is opposite to and connected to the third slot 32. The other part of the second slot 21 and the third slot 32 form a guide channel 80. In the initial state, the third slot 32 can be connected to the first slot 12. The guide channel 80 is connected to the holding cavity 60.

[0045] The clutch assembly 40 includes an elastic element 41 and a clutch element 42. The clutch element 42 includes a clutch body 421 and two support arms 422 protruding from the clutch body 421. The elastic element 41 and the clutch body 421 are both located within the receiving space 70. The clutch element 42 is inserted into the handle seat assembly 20 and can rotate with the handle seat assembly 20. The elastic element 41 is sandwiched between the clutch body 421 and the handle seat assembly 20. The support arms 422 have an "L" shaped structure. The two support arms 422 are respectively inserted into the two guide channels 80. At this time, the support arms 422 are not inserted into the holding cavity 60 under the action of the elastic element 41. The elastic element 41 is a spring.

[0046] One end of the knob assembly 50 is connected to the clutch 42, and the other end protrudes from the ball lock housing 30 after passing through the mounting hole 31, so that it can be gripped by a person. When it is necessary to lock, the person turns the knob assembly 50, which drives the clutch 42 to move linearly towards the middle frame 10. The elastic element 41 is compressed, and the two support arms 422 are respectively inserted into the two retaining cavities 60, so that the handle seat assembly 20 is engaged with the middle frame 10 along with the clutch 42, thereby preventing the handle seat assembly 20 from rotating. Even if someone outside uses a key, they cannot open the ball lock, thus achieving the purpose of locking from the inside. When it is necessary to unlock, the knob assembly 50 is turned in the opposite direction. The clutch 42 is reset under the elastic recovery action of the elastic element 41. The two support arms 422 are respectively disengaged from the two retaining cavities 60, the clutch 42 is separated from the middle frame 10, the handle seat assembly 20 resumes rotation, and turning the ball lock housing 30 will drive the handle seat assembly 20 to rotate together, thereby opening the ball lock.

[0047] In this embodiment, the clutch body 421 includes a main body 4211 and two pressing heads 4212. Two support arms 422 protrude from both ends of the outer wall of the clutch body 421, and the two pressing heads 4212 protrude from the two support arms 422. The cross-section of the pressing head 4212 is triangular. An elastic element 41 is sandwiched between the main body 4211 and the handle seat assembly 20. The knob assembly 50 has two spaced track grooves 51 on the side facing the middle frame 10. The two pressing heads 4212 slide on the two track grooves 51 respectively. When needed... To lock, rotate the knob assembly 50. The pressure head 4212 can move along the corresponding track groove 51 to the side end of the knob assembly 50 outside the track groove 51. The knob assembly 50 drives the clutch 42 to move in a straight line. The elastic element 41 is compressed, and the two support arms 422 are respectively inserted into the two holding cavities 60. When unlocking is required, rotate the knob assembly 50 in the opposite direction. The pressure head 4212 can return to the corresponding track groove 51. The clutch 42 is reset under the elastic recovery action of the elastic element 41, and the two support arms 422 are respectively disengaged from the two holding cavities 60.

[0048] The ball lock housing 30 also has a limiting cavity 33, with the mounting hole 31 communicating with one end of the limiting cavity 33. Two third slots 32 are recessed into the inner wall of the other end of the limiting cavity 33. The inner diameter of the mounting hole 31 is smaller than the inner diameter of the limiting cavity 33. The handle seat assembly 20 also has a positioning groove 22 and two opposing notches 23. The positioning groove 22 is located on the side of the handle seat assembly 20 away from the middle frame 10. The second slot 21 communicates with the positioning groove 22 through the corresponding notch 23. The handle seat assembly 20 is installed... Mounted on the limiting cavity 33, the second slot 21, the notch 23 and the positioning slot 22 are all connected to the limiting cavity 33. Part of the limiting cavity 33, the positioning slot 22 and the two notches 23 constitute the accommodating space 70. The main body 4211 presses against the elastic member 41 in the positioning slot 22. The support arm 422 has an "L" shaped structure. One end of the support arm 422 is connected to the main body 4211 and the other end passes through the corresponding notch 23 and is located in the guide channel 80 to fix the clutch member 42.

[0049] In this embodiment, the knob assembly 50 includes a drive shaft 52 and a button 53. The drive shaft 52 is located in the receiving space 70. Two track grooves 51 are provided on the side end of the drive shaft 52 near the middle frame 10. One end of the button 53 is located in the receiving space 70 and is fixedly connected to the drive shaft 52. The other end passes through the mounting hole 31 and protrudes outside the ball lock housing 30 so that it can be held by hand.

[0050] The drive shaft 52 includes a shaft body 521 and two spaced arc-shaped plates 522. Both arc-shaped plates 522 protrude from one side of the shaft body 521. A button 53 is installed on the other side of the shaft body 521. The side of the arc-shaped plate 522 away from the shaft body 521 has an inwardly recessed arc-shaped surface 5221. The arc-shaped surface 5221 on one arc-shaped plate 522, part of the shaft body 521, and the outer end face of the other arc-shaped plate 522 enclose the track groove 51.

[0051] The drive shaft 52 also includes a limiting block 523 protruding from the outer wall of the shaft body 521. The ball lock housing 30 is also provided with an arc-shaped limiting groove 34. The limiting groove 34 is recessed on the inner wall of the receiving space 70 and communicates with the receiving space 70. The limiting block 523 is slidably installed in the limiting groove 34 to limit the rotation range of the knob assembly 50.

[0052] Please refer to further information. Figures 4 to 14In this embodiment, the ball lock housing 30 includes a first fastener 35, a handle cover 36, and a spherical hand cover 37 connected to the handle cover 36. The handle cover 36 has a through hole 361, a first through hole 362, and two third slots 32. The axis of the first through hole 362 is perpendicular to the axis of the through hole 361. The first through hole 362 and the third slots 32 are both connected to the through hole 361. The spherical hand cover 37 has a cavity 371 and an insert hole 31 connected to the cavity 371. The handle seat assembly 20 is inserted into the through hole 361. The handle seat assembly 20 also has a first threaded hole 24. The first fastener 35 passes through the first through hole 362 and is connected to the first threaded hole 24. The cavity 371 and the through hole 361 are connected to form the limiting cavity 33. The first fastener 35 is an internal hexagon set screw.

[0053] In some embodiments, the edge of the spherical hand cover 37 is provided with a U-shaped groove 372, and the inner wall of the hand cover 36 and the U-shaped groove 372 are enclosed to form the limiting groove 34.

[0054] The ball lock housing 30 also includes multiple second fasteners 38, the handle cover 36 is also provided with multiple second through holes 363, and the spherical hand cover 37 is also provided with multiple second threaded holes 373. The number of second fasteners 38, second through holes 363 and second threaded holes 373 are all three. The second fasteners 38 pass through the corresponding second through holes 261 and are connected to the corresponding second threaded holes 373, thereby fixing the spherical hand cover 37 to the handle cover 36.

[0055] The knob assembly 50 also includes a third fastener 54 and an annular spring washer 55. The drive shaft 52 is also provided with a receiving cavity 524 and a third through hole 525 communicating with the receiving cavity 524. Both the receiving cavity 524 and the third through hole 525 are arranged horizontally. The button 53 is provided with a third threaded hole. The third fastener 54 passes through the spring washer 55 and the third through hole 525 in sequence and then connects to the third threaded hole, thereby fixing the button 53 to the drive shaft 52. The third fastener 54 is a screw.

[0056] In this embodiment, the handle seat assembly 20 includes a nut 25, a toggle member 26, a torsion spring 27, and a handle connecting shaft 28. The torsion spring 27 has a first through hole 271 and is sleeved on the middle frame 10 through the first through hole 271. The torsion spring 27 is sandwiched between the toggle member 26 and the middle frame 10. The toggle member 26 has a second through hole 261. One end of the handle connecting shaft 28 is connected to the ball lock housing 30 and surrounds the ball lock housing 30 to form the receiving space 70. The other end of the handle connecting shaft 28 passes through the mounting hole 11 and the second through hole 261 in sequence and is connected to the nut 25, so that the handle seat assembly 20 can rotate relative to the middle frame 10. The positioning groove 22, two notch grooves 23, and two second slots 21 are all provided on the handle connecting shaft 28.

[0057] The torsion spring 27 includes a torsion spring body 272 and two torsion ends 273 connected to the torsion spring body 272. A first through hole 271 is provided on the torsion spring body 272. The actuating member 26 includes a paddle 262, a stop plate 263, and two stops 264 respectively vertically connected to both ends of the paddle 262. A second through hole 261 is provided on the paddle 262, and the stop plate 263 protrudes from the inner wall of the second through hole 261. The middle frame 10 includes a frame body 13, a boss 14, and two protrusions 15. The boss 14 and the protrusions 15 both protrude from one side of the frame body 13. Mounting holes 11 pass through the boss 14 in sequence. 4 and frame 13, torsion spring 27 is sleeved on the outer wall of boss 14 through first through hole 271, handle connecting shaft 28 is also provided with two oppositely arranged stop grooves 2811, limit block 523 is inserted into one of the stop grooves 2811 so that the toggle member 26 can rotate together with handle connecting shaft 28, two stop blocks 264 and two protrusions 15 are all located on the same side of two torsion ends 273, and the two torsion ends 273 respectively abut against the two stop blocks 264. The stop block 264 is located between protrusion 15 and torsion spring body 272 to limit the rotation range of handle connecting shaft 28.

[0058] The handle connecting shaft 28 includes a handle shaft 281 and an annular retaining ring 282 protruding from the outer wall of the handle shaft 281. One end of the handle shaft 281 is connected to the ball lock housing 30, and the other end of the handle shaft 281 passes through the mounting hole 11 and the second through hole 261 in sequence and is connected to the nut 25. The annular retaining ring 282 abuts against the outer wall of the middle frame 10. The handle shaft 281 is provided with an external thread 2812, the stop groove 2811, the positioning groove 22, and two notch grooves 23. The two second slots 21 are provided, wherein the external thread 2812 and the stop groove 2811 are provided on the end of the handle shaft 281 away from the knob assembly 50, the positioning groove 22, the two notch grooves 23 and the two second slots 21 are all provided on the end of the handle shaft 281 near the knob assembly 50, the nut 25 is installed on the external thread 2812, and the second slot 21 extends from the end of the handle shaft 281 away from the nut 25 through the annular retaining ring 282 and is recessed toward the middle of the handle shaft 281.

[0059] In some embodiments, the side of the middle frame 10 facing the knob assembly 50 is provided with a first receiving groove 16, the mounting hole 11 and the first slot 12 are both provided on the bottom wall of the first receiving groove 16, and the annular retaining ring 282 is located in the first receiving groove 16 to position the handle connecting shaft 28.

[0060] The handle seat assembly 20 also includes a plum blossom washer 29 and a bushing 292. The plum blossom washer 29 is sandwiched between the toggle member 26 and the nut 25. The side of the middle frame 10 away from the knob assembly 50 is provided with a second receiving groove 17. The mounting hole 11 is provided on the bottom wall of the second receiving groove 17. The bushing 292 is installed in the second receiving groove 17. The bushing 292 is provided with a third through hole 2921. The plum blossom washer 29 is provided with a fourth through hole 291. One end of the handle connecting shaft 28 is connected to the ball lock housing 30. The other end of the handle connecting shaft 28 passes through the mounting hole 11, the third through hole 2921, the second through hole 261 and the fourth through hole 291 in sequence and is connected to the nut 25. The handle connecting shaft 28 is also provided with a square groove 283 for connecting with a square shaft.

[0061] This utility model also discloses a spherical lock, including the anti-locking device as described above.

[0062] In summary, when the deadbolt device of this utility model needs to be deadbolted, rotating the knob assembly 50 drives the clutch 42 to move linearly towards the middle frame 10, compressing the elastic element 41. The two support arms 422 on the clutch 42 are respectively inserted into the two retaining cavities 60, so that the handle seat assembly 20 is engaged with the middle frame 10 along with the clutch 42, thereby preventing the handle seat assembly 20 from rotating. Even if someone outside uses a key, they cannot open the ball lock, achieving the purpose of deadbolting from the inside. When unlocking is required, rotating the knob assembly 50 in the opposite direction causes the clutch 42 to reset under the elastic recovery action of the elastic element 41. The two support arms 422 disengage from the two retaining cavities 60, the clutch 42 separates from the middle frame 10, and the handle seat assembly 20 resumes rotation. Rotating the ball lock shell 30 can drive the handle seat assembly 20, thereby opening the ball lock. It has low cost advantages, simple structure, can effectively protect the life and property of people indoors, is safe and reliable to use, and has broad market prospects.

[0063] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A locking device, characterized in that, include: The middle frame is used to be installed on the door panel. The middle frame is provided with mounting holes and two opposing first slots, both of which are recessed into the inner wall of the mounting holes. A handle base assembly is rotatably mounted on the mounting hole. The outer side wall of the handle base assembly is provided with two second slots. A portion of the second slot can be connected to the first slot and surround the first slot to form a laterally positioned retaining cavity. A ball lock housing is fixed to the handle base assembly and surrounds the handle base assembly to form a receiving space. The ball lock housing is provided with an insert hole and two third slots. The second slot, the insert hole and the third slots are all in communication with the receiving space. Another part of the second slot is in communication with the third slot and surrounds the third slot to form a guide channel. A clutch assembly, comprising an elastic element and a clutch element, the clutch element comprising a clutch body and two support arms protruding from the clutch body, the elastic element and the clutch body being located within the receiving space, the clutch element being inserted into the handle seat assembly and being able to rotate with the handle seat assembly, the elastic element being clamped between the clutch body and the handle seat assembly, and the two support arms being respectively inserted into the two guide channels; A knob assembly, one end of which is connected to the clutch, and the other end protruding from the ball lock housing after passing through the mounting hole. When locking is required, rotating the knob assembly drives the clutch to move linearly toward the middle frame, compressing the elastic element and inserting the two support arms into the two retaining cavities respectively. When unlocking is required, rotating the knob assembly in the opposite direction resets the clutch under the elastic recovery of the elastic element, and disengages the two support arms from the two retaining cavities respectively.

2. The locking device according to claim 1, characterized in that, The clutch body includes a main body and two pressure heads. The two support arms protrude from both ends of the outer wall of the clutch body, and the two pressure heads protrude from the two support arms. The elastic element is sandwiched between the main body and the handle seat assembly. The knob assembly has two track grooves on the side facing the middle frame. The two pressure heads slide on the two track grooves. When the knob assembly is rotated, the pressure heads can move along the corresponding track grooves to the knob assembly outside the track grooves, and the knob assembly drives the clutch to move in a straight line. When the knob assembly is rotated in the opposite direction, the pressure heads can return to the corresponding track grooves, and the clutch is reset under the elastic recovery action of the elastic element.

3. The locking device according to claim 2, characterized in that, The ball lock housing is also provided with a limiting cavity, the mounting hole is connected to one end of the limiting cavity, and both third slots are recessed on the inner wall of the other end of the limiting cavity; The handle seat assembly is also provided with a positioning groove and two oppositely arranged notches. The positioning groove is located on the side of the handle seat assembly away from the middle frame. The second slot communicates with the positioning groove through the corresponding notch. The handle seat assembly is installed on the limiting cavity. The limiting cavity, the positioning groove, and the two notches constitute the receiving space. The main body abuts against the elastic element in the positioning groove. The support arm is "L" shaped. One end of the support arm is connected to the main body, and the other end passes through the corresponding notch and is located in the guide channel.

4. The locking device according to claim 3, characterized in that, The knob assembly includes a drive shaft and a button. The drive shaft is located within the receiving space. Both of the track grooves are provided on the drive shaft. One end of the button is located within the receiving space and is fixedly connected to the drive shaft, while the other end passes through the mounting hole and protrudes outside the ball lock housing.

5. The locking device according to claim 4, characterized in that, The drive shaft includes a shaft body and two spaced arc-shaped plates. Both arc-shaped plates protrude from one end of the shaft body, and the button is installed on the other end of the shaft body. Each arc-shaped plate has an arc-shaped surface. The arc-shaped surface on one arc-shaped plate, part of the shaft body, and the outer end face of the other arc-shaped plate enclose and form the track groove.

6. The locking device according to claim 5, characterized in that, The drive shaft also includes a limiting block protruding from the outer wall of the shaft body, and the ball lock housing is also provided with an arc-shaped limiting groove, which is recessed on the inner wall of the accommodating space, and the limiting block is slidably installed in the limiting groove.

7. The locking device according to claim 6, characterized in that, The handle seat assembly includes a nut, a toggle member, a torsion spring, and a handle connecting shaft. The torsion spring has a first through hole and is sleeved on the middle frame through the first through hole. The torsion spring is sandwiched between the toggle member and the middle frame. The toggle member has a second through hole. One end of the handle connecting shaft is connected to the ball lock housing and surrounds the ball lock housing to form the receiving space. The other end of the handle connecting shaft passes through the mounting hole and the second through hole in sequence and is connected to the nut. The positioning groove, the two notch grooves, and the two second slots are all provided on the handle connecting shaft.

8. The locking device according to claim 7, characterized in that, The torsion spring includes a torsion spring body and two torsion ends, both of which are connected to the torsion spring body, and the first through hole is provided on the torsion spring body. The actuating component includes a paddle, a stop plate, and two blocks that are vertically connected to both ends of the paddle. The second through hole is provided on the paddle, and the stop plate protrudes from the inner wall of the second through hole. The middle frame includes a frame body, a boss, and two protrusions. The boss and the protrusions are both protruding on one side of the frame body. The mounting hole passes through the boss and the frame body in sequence. The torsion spring is sleeved on the boss through the first through hole. The handle connecting shaft is also provided with two oppositely arranged stop grooves. The limiting block is inserted into one of the stop grooves. The two stop blocks and the two protrusions are all located on the same side of the two torsion ends, and the two torsion ends abut against the two stop blocks respectively. The stop blocks are located between the protrusions and the torsion spring body.

9. The locking device according to claim 8, characterized in that, The handle connecting shaft includes a handle shaft and an annular retaining ring protruding from the outer wall of the handle shaft. One end of the handle shaft is connected to the ball lock housing, and the other end of the handle shaft passes through the mounting hole and the second through hole in sequence and is connected to the nut. The annular retaining ring abuts against the outer wall of the middle frame. The handle shaft is provided with an external thread, the stop groove, the positioning groove, two notch grooves and two second slots. The nut is installed on the external thread, and the second slot extends from the end of the handle shaft away from the nut through the annular retaining ring and is recessed toward the middle of the handle shaft.

10. A spherical lock, characterized in that, Includes the locking device as described in any one of claims 1-9.

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