Handle rotating structure and door lock

Abstract

The utility model discloses a handle rotating structure and a door lock, the handle rotating structure comprises a middle frame, a lock cylinder, a handle piece and a locking mechanism, the lock cylinder is installed on the middle frame, and the lock cylinder is provided with a lock hole; the handle piece is rotationally mounted on the middle frame and shields the lock hole, and the handle piece is provided with a slot; the locking mechanism comprises an elastic piece and a shifting button used for being shifted by a hand, one end of the shifting button is installed on the middle frame through the elastic piece, the other end of the shifting button is inserted into the inserting groove, and the shifting button can be separated from the inserting groove by shifting the shifting button so that the lock hole can be exposed after the handle piece rotates. When the lock needs to be opened, the shifting button is shifted, the shifting button can be separated from the inserting groove, the locking mechanism releases the handle and rotates the handle, so that the lock hole is exposed, a user can open the door by using a key, the locking mechanism has the functions of locking and releasing the handle piece, a hole position does not need to be formed in the handle piece, the appearance of the door lock cannot be damaged, and the grade of the door lock is improved; the whole structural scheme is easy to install, high in practicability and operability, convenient and fast.

Description

Technical Field

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

[0002] At present, smart door locks generally use passwords, fingerprints, IC cards or face recognition to unlock, but in order to ensure unlocking in power-off or emergency situations, smart door locks retain mechanical locks, so the door locks are all equipped with keyholes for mechanical locks.

[0003] In some existing smart door locks, the handle cannot be turned, and the handle blocks the keyhole, making it difficult to insert the key into the keyhole. In order to open the lock, a hole is opened on the handle, and then the key can be inserted into the keyhole after passing through the hole. However, this will destroy the appearance of the door lock, reduce the grade of the smart door lock, and is very inconvenient to use. Utility Model Content

[0004] The utility model aims to provide a handle rotation structure and a door lock to solve the technical problems that the handle of some existing smart door locks cannot be rotated, the handle blocks the key hole, and the key is difficult to insert into the key hole. In order to open the lock, a hole is opened on the handle, and then the key can be inserted into the key hole after passing through the hole. This will destroy the appearance of the door lock, reduce the grade of the smart door lock, and is very inconvenient to use.

[0005] The technical solution of the utility model is as follows:

[0006] In order to achieve the above object, the utility model provides a handle rotation structure, comprising:

[0007] Middle frame;

[0008] A lock core is installed on the middle frame, and the lock core is provided with a lock hole;

[0009] A handle piece is rotatably mounted on the middle frame and covers the lock hole, and the handle piece is provided with a slot;

[0010] The locking mechanism includes an elastic member and a dial button for manual operation, wherein one end of the dial button is mounted on the middle frame through the elastic member and the other end is inserted into the slot. By moving the dial button, the dial button can be disengaged from the slot, so that the lock hole can be exposed after the handle is rotated.

[0011] Furthermore, the dial button includes a stopper and a lever for manual activation, the lever is protruding from the outer wall of the stopper, the middle frame has a laterally arranged limit groove and a dial hole connected to the limit groove, the lever is located in the dial hole, one end of the stopper is installed in the limit groove through the elastic member, and the other end is inserted into the slot.

[0012] Further, the stop member includes a slide plate and a protrusion protruding from one side of the slide plate, the lever protrudes from the other side of the slide plate and is arranged opposite to the protrusion, the protrusion and the lever are both protruding from the middle position of the slide plate, the elastic member, the protrusion and part of the slide plate are all inserted into the limiting groove, and one end of the elastic member abuts against the inner wall of the limiting groove, and the other end abuts against the protrusion through the slide plate, and the other part of the slide plate is inserted into the slot.

[0013] Furthermore, an introduction portion is provided at one end of the slide away from the slot to prevent the elastic member from excessively bending when compressed, and the distance between the introduction portion and the elastic member gradually increases from the end close to the protrusion toward the end away from the protrusion.

[0014] Further, the middle frame includes a lock plate, a pressure plate and multiple first fasteners, the lock plate includes a base plate, a first side plate, two oppositely arranged second side plates and multiple spaced studs, the base plate is provided with a receiving groove, the first side plate, the second side plate and the studs are all convexly arranged on the bottom wall of the receiving groove, the two ends of the first side plate are respectively connected to the two second side plates, the pressure plate is penetrated by a plurality of first through holes, the stud is provided with a first threaded hole, the first fastener is connected to the first threaded hole after passing through the first through hole, the base plate, the pressure plate, the first side plate and the two second side plates enclose the limiting groove, the dial hole is provided on the base plate, and the lock core and the handle member are both installed on the base plate.

[0015] Furthermore, the handle member includes a handle connecting seat, a handle head and a plurality of second fasteners. The middle frame is also penetrated by a mounting hole, the handle connecting seat is provided with a plurality of second through holes, and the handle head is provided with a plurality of second threaded holes. The handle connecting seat is provided on one side of the middle frame and is located in the accommodating groove, the handle head is provided on the other side of the middle frame and is connected to the handle connecting seat after passing through the mounting hole, the second fastener is connected to the second threaded hole after passing through the second through hole, the middle frame and the dial button are combined to form a positioning groove with a U-shaped cross-section, the handle connecting seat is convexly provided with a positioning rod, the positioning rod is inserted into the positioning groove, the slot is provided on the side of the handle connecting seat close to the positioning rod, and the handle head blocks the lock hole.

[0016] Furthermore, the length of the pressing plate and the length of the sliding plate are both greater than the length of the second side plate, and the pressing plate, the sliding plate and the protruding portion together form the positioning groove.

[0017] Further, the protruding portion includes a first baffle and two oppositely arranged second baffles, the first baffle and the second baffle are both protruding on one surface of the skateboard, the two ends of the first baffle are respectively connected to the two second baffles, the elastic member abuts against the first baffle, the pressure plate, the skateboard, the first baffle and the two second baffles form an avoidance groove for avoiding the positioning rod, and the avoidance groove is connected to the positioning groove.

[0018] Furthermore, the bottom wall of the accommodating groove is provided with a groove, the mounting hole passes through the bottom wall of the groove to the base plate, and the locking plate also includes at least one support plate for supporting the dial button, and the support plate is protruding on the inner wall of the groove.

[0019] The utility model also provides a door lock, comprising the handle rotating structure as described above.

[0020] Compared with the prior art, the beneficial effects of the present invention include at least:

[0021] The handle piece of the utility model is rotatably installed on the middle frame. When the lock is not needed, one end of the dial button in the locking mechanism is installed on the middle frame through an elastic member, and the other end is inserted into the slot of the handle piece. The locking mechanism can tighten the handle piece to prevent the handle piece from rotating. At this time, the handle piece blocks the lock hole. When the lock needs to be opened, the dial button is turned, the dial button can be disengaged from the slot, and the locking mechanism releases the handle. The handle is rotated to expose the lock hole, and the user can use the key to open the door. The locking mechanism has the function of locking and releasing the handle piece. There is no need to open a hole on the handle piece, which will not damage the appearance of the door lock, thereby improving the grade of the door lock. The entire structural scheme is simple to install, has strong practicality and operability, is convenient and fast, and has a wide range of application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of the handle rotation structure provided in the embodiment of the utility model Figure 1 ;

[0023] Figure 2 A schematic diagram of the structure of the handle rotation structure provided in the embodiment of the utility model Figure 2 ;

[0024] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0025] Figure 4 A cross-sectional view of a handle rotation structure provided in an embodiment of the utility model;

[0026] Figure 5 for Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0027] Figure 6 An exploded view of a handle rotation structure provided in an embodiment of the utility model;

[0028] Figure 7 A schematic diagram of the structure of a dial button provided in an embodiment of the utility model;

[0029] Figure 8 A schematic diagram of the structure of the middle frame provided in an embodiment of the utility model;

[0030] Fig. 9 for Figure 8 A partial enlarged schematic diagram of point C in the middle;

[0031] Fig.10 A schematic diagram of the structure of a pressing plate provided in an embodiment of the utility model;

[0032] Fig.11 This is a schematic structural diagram of a handle provided in an embodiment of the utility model.

[0033] In the figure:

[0034] 10. middle frame; 11. mounting hole; 12. limiting groove; 13. shifting hole; 14. locking plate; 141. base plate; 1411. receiving groove; 142. first side plate; 143. second side plate; 144. stud; 1441. first threaded hole; 145. positioning pin; 146. support plate; 15. pressing plate; 151. first through hole; 152. positioning hole; 16. first fastener; 17. mounting hole; 18. groove; 20. handle piece; 21. slot; 22. handle connection seat; 221. Second through hole; 222. Positioning rod; 23. Handle head; 231. Second threaded hole; 232. Grip portion; 233. Plug; 24. Second fastener; 30. Locking mechanism; 31. Elastic member; 32. Push button; 321. Stop member; 322. Push rod; 323. Slide plate; 3231. Introducing portion; 324. Protruding portion; 3241. First baffle plate; 3242. Second baffle plate; 40. Positioning groove; 50. Wave washer; 60. Avoidance groove; 70. Cover plate. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0036] See also Figures 1 to 7As shown, the embodiment of the utility model discloses a handle rotation structure, which is applied to a door lock. The handle rotation structure includes a middle frame 10, a lock core, a handle member 20 and a locking mechanism 30. The middle frame 10 is provided with an embedding hole 11, the lock core is installed on the embedding hole 11 of the middle frame 10, the lock core is provided with a lock hole for inserting a key, the handle member 20 is rotatably installed on the middle frame 10 and covers the lock hole, the handle member 20 is designed to be a rotatable structure, and the outer wall surface of the handle member 20 is provided with a slot 21; the locking mechanism 30 includes an elastic member 31 and a key for inserting a key. The dial button 32 is manually turned. When the lock is not needed, one end of the dial button 32 is installed on the middle frame 10 through the elastic member 31, and the other end is inserted into the slot 21. The locking mechanism 30 can fasten the handle 20 to prevent the handle 20 from rotating. When the lock needs to be opened, there is no need to drill a hole on the handle 20. By turning the dial button 32, the dial button 32 can be disengaged from the slot 21. At this time, the dial button 32 compresses the elastic member 31. After the handle 20 is manually rotated, the lock hole can be exposed, which is convenient for the key to be inserted into the lock. The elastic member 31 can be a spring.

[0037] In this embodiment, the dial button 32 includes a stopper 321 and a dial rod 322 for manual operation. The dial rod 322 is protruded from the outer wall of the stopper 321. The middle frame 10 has a laterally arranged limit groove 12 and a dial hole 13 connected to the limit groove 12. The dial hole 13 is a vertically arranged long strip hole. The dial rod 322 is located in the dial hole 13. One end of the stopper 321 is installed in the limit groove 12 through the elastic member 31, and the other end is inserted into the slot 21. The stopper 321 can tighten the handle member 20 under the action of the elastic member 31, so that the handle member 20 can be fixed when it is centered, which is the usage state of the door lock most of the time.

[0038] The stopper 321 includes a slide plate 323 and a protrusion 324 protruding from one side of the slide plate 323, and the lever 322 protrudes from the other side of the slide plate 323 and is arranged opposite to the protrusion 324. The protrusion 324 and the lever 322 are both protruding from the middle position of the slide plate 323. The elastic member 31, the protrusion 324 and a part of the slide plate 323 are all inserted into the limiting groove 12, and one end of the elastic member 31 abuts against the inner wall of the limiting groove 12, and the other end abuts against the protrusion 324 through the slide plate 323. The other part of the slide plate 323 is inserted into the slot 21. At this time, the elastic member 31 is in an extended state, and under the elastic action of the elastic member 31, the slide plate 323 can limit the rotation of the handle member 20.

[0039] In some embodiments, an introduction portion 3231 is provided at the end of the slide plate 323 away from the slot 21, and the introduction portion 3231 is an inclined slope structure. The distance between the introduction portion 3231 and the elastic member 31 gradually increases from the end close to the protrusion 324 to the end away from the protrusion 324. In the process of the elastic member 31 being compressed, the elastic member 31 will continuously adjust its posture with the cooperation of the introduction portion 3231 to prevent the elastic member 31 from excessive bending when being compressed.

[0040] The locking mechanism 30 of this embodiment is designed with an elastic member 31 with a reset function. When the handle member 20 is in the centered state, the handle member 20 can be rotated left or right after the button 32 is pushed upward. During the movement, the elastic member 31 is in a compressed state; when the handle member 20 returns to the centered position, the button 32 is pushed by the elastic member 31 and inserted into the slot 21 of the handle connecting seat 22 to achieve the combination. At this time, the handle member 20 is completely fixed.

[0041] Please read further Figures 4 to 11 In this embodiment, the middle frame 10 includes a locking plate 14, a pressing plate 15 and a plurality of first fasteners 16. The locking plate 14 includes a base plate 141, a first side plate 142, two second side plates 143 arranged opposite to each other and a plurality of studs 144 arranged at intervals. The base plate 141 is provided with a receiving groove 1411. The first side plate 142, the second side plate 143 and the studs 144 are all convexly arranged on the bottom wall of the receiving groove 1411. The two ends of the first side plate 142 are respectively connected to the two second side plates 143. The pressing plate 15 is provided with a plurality of first through holes 151, the stud 144 is provided with a first threaded hole 1441, and the first fastener 16 passes through the first through hole 151 and is connected with the first threaded hole 1441, so as to fix the pressing plate 15 on the lock plate 14, the base plate 141, the pressing plate 15, the first side plate 142 and the two second side plates 143 are surrounded to form the limiting groove 12, the shifting hole 13 is provided on the base plate 141, and the lock core and the handle 20 are both installed on the base plate 141.

[0042] In some embodiments, the locking plate 14 also includes at least one positioning pin 145, which is protruding from the inner wall of the receiving groove 1411. The pressure plate 15 is also penetrated by at least one positioning hole 152. Before installing the first fastener 16, the positioning pin 145 is inserted into the positioning hole 152 to achieve preliminary positioning of the pressure plate 15.

[0043] The handle member 20 includes a handle connection seat 22, a handle head 23 and a plurality of second fasteners 24. The middle frame 10 is also provided with a mounting hole 17. The handle connection seat 22 is provided with a plurality of second through holes 221. The handle head 23 is provided with a plurality of second threaded holes 231. The handle connection seat 22 is provided on one side of the middle frame 10 and is located in the receiving groove 1411. The handle head 23 is provided on the other side of the middle frame 10 and is connected to the handle connection seat 22 after passing through the mounting hole 17. The second fastener 24 passes through the second through holes 221 and is connected to the second threaded holes 231. The two threaded holes 231 are connected, and the middle frame 10 and the button 32 are enclosed to form a positioning groove 40 with a U-shaped cross-section. The handle connecting seat 22 is protruded with a positioning rod 222, and the positioning rod 222 is inserted into the positioning groove 40. The slot 21 is arranged on the side of the handle connecting seat 22 close to the positioning rod 222, and the handle head 23 blocks the lock hole. When the button 32 moves to the side away from the handle connecting seat 22 and the button 32 is out of the slot 21, the handle piece 20 can be directly rotated, and the positioning rod 222 can be out of the positioning groove 40.

[0044] In some embodiments, the length of the pressure plate 15 and the length of the slide plate 323 are both greater than the length of the second side plate 143. The pressure plate 15, the slide plate 323 and the protrusion 324 enclose the positioning groove 40. The positioning rod 222 is inserted into the positioning groove 40 to assist in positioning the handle 20, so that the button 32 can be smoothly inserted into the slot 21.

[0045] The handle rotation structure also includes a ring-shaped wave washer 50. The handle piece 20 is designed to be movable and can rotate. The handle head 23 includes a gripping portion 232 and a plug 233 connected to the gripping portion 232. The plug 233 passes through the wave washer 50 and the mounting hole 17 in turn to be connected to the handle connecting seat 22. The second threaded hole 231 is provided on the plug 233. The wave washer 50 is sleeved on the plug 233 of the handle head 23. The wave washer 50 is clamped between the middle frame 10 and the gripping portion 232 to fill the gap between the handle piece 20 and the middle frame 10 and improve the hand feel.

[0046] The protruding portion 324 includes a first baffle plate 3241 and two oppositely arranged second baffle plates 3242. The first baffle plate 3241 and the second baffle plates 3242 are both protruded on one surface of the slide plate 323. The two ends of the first baffle plate 3241 are respectively connected to the two second baffle plates 3242. The first baffle plate 3241 is correspondingly arranged to the first side plate 142. The two second baffle plates 3242 are respectively corresponding to the two second side plates 143. The elastic member 31 abuts against the first baffle plate 3241. The pressure plate 15, the slide plate 323, the first baffle plate 3241 and the two second baffle plates 3242 are enclosed to form an avoidance groove 60 for avoiding the positioning rod 222. The avoidance groove 60 is connected to the positioning groove 40. The positioning rod 222 is allowed to be inserted into the avoidance groove 60, but when the dial button 32 can be disengaged from the slot 21, the positioning rod 222 needs to be disengaged from the avoidance groove 60 at the same time.

[0047] In some embodiments, a groove 18 is provided on the bottom wall of the accommodating groove 1411, and a mounting hole 17 passes through the base plate 141 from the bottom wall of the groove 18. The locking plate 14 also includes at least one support plate 146, which is protruding from the inner wall of the groove 18. The support plate 146 is used to support the dial button 32, and the dial button 32 can slide up and down relative to the support plate 146.

[0048] The handle rotation structure also includes a cover plate 70, which is installed on the middle frame 10 and can cover the lock hole to prevent external moisture or dust from entering the lock hole.

[0049] The utility model also discloses a door lock, comprising the handle rotating structure as described above.

[0050] The assembly of the handle rotation structure includes the following steps:

[0051] Step S101, assembling the lock core, and installing the lock core on the embedding hole 11 of the middle frame 10;

[0052] Step S102, assembling the handle 20, installing the annular wave washer 50 on the plug 233 of the handle head 23, and then installing them together on the mounting hole 17 of the middle frame 10; placing the handle connecting seat 22 inside the receiving groove 1411 of the middle frame 10, and finally fixing the handle head 23 and the handle connecting seat 22 together through a plurality of second fasteners 24, at this time, the handle 20 is in a state of being able to rotate left and right;

[0053] Step S103, assemble the locking mechanism 30, put the elastic member 31 and the dial button 32 on the lock plate 14, and finally cover the pressure plate 15 and fix it with multiple first fasteners 16. At this time, when the handle 20 is rotated to the center, the top of the dial button 32 is installed in the limiting groove 12 of the middle frame 10 through the elastic member 31, and the dial button 32 is pushed by the elastic member 31, and its bottom will be inserted into the slot 21 of the handle connecting seat 22, and the dial rod 322 of the dial button 32 is located in the dial hole 13. The locking mechanism 30 can fasten the handle 20 to prevent the handle 20 from rotating, and the handle 20 blocks the lock hole. When the lock needs to be opened, the dial button 32 is pushed upward, and the dial button 32 can be disengaged from the slot 21. The locking mechanism 30 releases the handle 20, and the handle 20 is rotated to expose the lock hole, and then the key is inserted into the lock core to unlock the door. After unlocking, open the door, remove the key, and rotate the handle 20 in the opposite direction to reset it.

[0054] To sum up, the handle piece 20 of the utility model is rotatably installed on the middle frame 10. When the lock is not needed, one end of the dial button 32 in the locking mechanism 30 is installed on the middle frame 10 through the elastic member 31, and the other end is inserted into the slot 21 of the handle piece 20. The locking mechanism 30 can tighten the handle piece 20 to prevent the handle piece 20 from rotating. The handle piece 20 blocks the lock hole. When the lock needs to be opened, the dial button 32 is turned, and the dial button 32 can be disengaged from the slot 21. The locking mechanism 30 releases the handle and rotates the handle to expose the lock hole, which is convenient for the key to be inserted into the lock. The locking mechanism 30 has the function of locking and releasing the handle piece 20. There is no need to open a hole on the handle piece 20, which will not damage the appearance of the door lock, thereby improving the grade of the door lock. The operation is convenient and quick, and suitable for large-scale promotion.

[0055] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A handle rotation structure, characterized in that: include: Middle frame; A lock core is installed on the middle frame, and the lock core is provided with a lock hole; A handle piece is rotatably mounted on the middle frame and covers the lock hole, and the handle piece is provided with a slot; The locking mechanism includes an elastic member and a dial button for manual operation, wherein one end of the dial button is mounted on the middle frame through the elastic member and the other end is inserted into the slot. By moving the dial button, the dial button can be disengaged from the slot, so that the lock hole can be exposed after the handle is rotated.

2. The handle rotation structure according to claim 1, characterized in that: The dial button includes a stopper and a lever for manual activation, the lever is protruding from the outer wall of the stopper, the middle frame has a laterally arranged limit groove and a dial hole connected to the limit groove, the lever is located in the dial hole, one end of the stopper is installed in the limit groove through the elastic member, and the other end is inserted into the slot.

3. The handle rotation structure according to claim 2, characterized in that: The stop member includes a slide plate and a protruding portion protruding from one side of the slide plate, the lever protruding from the other side of the slide plate and arranged opposite to the protruding portion, the protruding portion and the lever both protruding from the middle position of the slide plate, the elastic member, the protruding portion and a portion of the slide plate are all inserted into the limiting groove, and one end of the elastic member abuts against the inner wall of the limiting groove, and the other end abuts against the protruding portion through the slide plate, and another part of the slide plate is inserted into the slot.

4. The handle rotation structure according to claim 3, characterized in that: An end of the slide away from the slot is provided with an introduction portion for preventing the elastic member from excessive bending when compressed, and the distance between the introduction portion and the elastic member gradually increases from the end close to the protrusion toward the end away from the protrusion.

5. The handle rotation structure according to claim 3, characterized in that: The middle frame includes a lock plate, a pressure plate and multiple first fasteners, the lock plate includes a base plate, a first side plate, two oppositely arranged second side plates and multiple spaced studs, the base plate is provided with a receiving groove, the first side plate, the second side plate and the studs are all convexly arranged on the bottom wall of the receiving groove, the two ends of the first side plate are respectively connected to the two second side plates, the pressure plate is penetrated by a plurality of first through holes, the stud is provided with a first threaded hole, the first fastener is connected to the first threaded hole after passing through the first through hole, the base plate, the pressure plate, the first side plate and the two second side plates are surrounded to form the limiting groove, the dial hole is provided on the base plate, and the lock core and the handle member are both installed on the base plate.

6. The handle rotation structure according to claim 5, characterized in that: The handle member includes a handle connecting seat, a handle head and multiple second fasteners. The middle frame is also penetrated by a mounting hole, the handle connecting seat is provided with multiple second through holes, and the handle head is provided with multiple second threaded holes. The handle connecting seat is arranged on one side of the middle frame and is located in the accommodating groove, the handle head is arranged on the other side of the middle frame and is connected to the handle connecting seat after passing through the mounting hole, the second fastener is connected to the second threaded hole after passing through the second through hole, the middle frame and the dial button are combined to form a positioning groove with a U-shaped cross-section, the handle connecting seat is convexly provided with a positioning rod, the positioning rod is inserted into the positioning groove, the slot is arranged on the side of the handle connecting seat close to the positioning rod, and the handle head blocks the lock hole.

7. The handle rotation structure according to claim 6, characterized in that: The length of the pressing plate and the length of the sliding plate are both greater than the length of the second side plate, and the pressing plate, the sliding plate and the protruding portion enclose the positioning groove.

8. The handle rotation structure according to claim 6, characterized in that: The protruding portion includes a first baffle and two oppositely arranged second baffles, the first baffle and the second baffle are both protruding on one surface of the slide plate, the two ends of the first baffle are respectively connected to the two second baffles, the elastic member abuts against the first baffle, the pressure plate, the slide plate, the first baffle and the two second baffles form an avoidance groove for avoiding the positioning rod, and the avoidance groove is connected to the positioning groove.

9. The handle rotation structure according to claim 6, characterized in that: The bottom wall of the accommodating groove is provided with a groove, the mounting hole passes through the base plate from the bottom wall of the groove, and the locking plate further includes at least one support plate for supporting the dial button, and the support plate is convexly arranged on the inner wall of the groove.

10. A door lock, characterized in that: It comprises the handle rotation structure as described in any one of claims 1-9.

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