Button type door lock self-locking structure

Abstract

The utility model discloses a button type door lock self-locking structure which comprises a handle assembly, a sliding button, a rotating piece, a guiding piece and a locking piece, a door inner handle is provided with a sliding groove, the sliding button is matched with the sliding groove in a sliding mode, and the sliding button is provided with a rotating driving piece; the rotating piece is rotationally arranged in the inside-door handle, the rotating shaft is connected with the rotating piece, the sliding button slides, and the rotating driving piece drives the rotating piece to rotate; the guide piece is arranged in the outside door handle; the connecting shell is provided with a limiting groove, the locking piece comprises an orienting piece and a linear moving piece, the orienting piece is arranged at the tail end of the rotating shaft, the linear moving piece is rotationally connected with the orienting piece, and the orienting piece abuts against the guiding face of the guiding piece; the connecting shell is provided with a limiting groove, the limiting groove is right opposite to the linear moving part, the rotating shaft rotates and drives the orientation part to rotate, and under the guiding effect of the guiding part, the linear moving part moves towards the limiting groove and is matched with the limiting groove in an inserted mode. By the adoption of the arrangement, when a user closes the door lock, the door lock can be reversely locked through the door handle, and the door handle has the advantage of being easy and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of door lock structure, specifically relates to a button formula's door lock self -locking structure. BACKGROUND

[0002] Door lock safety has been a problem of life safety that is concerned, in order to prevent others from entering the door by improper behavior outside the door, usually adopt self -locking type door lock, the existing self -locking type door lock usually is inside lock type and press type two: inside lock type is in the door after locking in the door again with key reverse locking, and press type is in the door after locking press the button of the handle inside the door, to limit the handle rotation reverse locking. However, from the use habit, people through the handle after pulling the door, then use the door reverse locking or press the button in the center position of the handle, usually there is the situation of forgetting, there is also the problem of complicated operation. Therefore, there is still room for improvement. SUMMARY

[0003] In order to overcome the deficiencies of the prior art, the utility model discloses a button formula's door lock self -locking structure, when closing the door lock, the user can reverse lock the door lock through the door handle, which has the advantages of simple operation.

[0004] The utility model discloses a button formula's door lock self -locking structure, which realizes the following technical scheme:

[0005] A button formula's door lock self -locking structure, comprising:

[0006] A handle assembly, the handle assembly comprises a door handle, an outer handle, a connecting shell, a shaft and a movable lock tongue, the door handle and the outer handle are arranged on the two sides of the connecting shell respectively, the connecting shell is embedded on the door, the middle part of the shaft is rotationally connected with the connecting shell, the two ends of the shaft are connected with the door handle and the outer handle respectively, the outer handle is provided with a slot, and the slot extends towards the connecting shell direction;

[0007] A sliding button, the door handle is provided with a sliding groove, the sliding button is slidably matched with the sliding groove, and the sliding button is provided with a rotation driving part;

[0008] A rotating part, the rotating part is rotationally arranged in the door handle, the shaft is connected with the rotating part, the sliding button is slid, the rotation driving part moves towards the rotating part, and drives the rotating part to rotate;

[0009] A guide part, the guide part is arranged in the outer handle and opposite to the shaft;

[0010] The connecting shell is provided with a limiting slot, the limiting slot is opposite to the linear moving piece, the rotating shaft is rotated to drive the directional piece to rotate, under the guiding effect of the guide piece, the linear moving piece moves towards the limiting slot and is inserted and matched with the limiting slot.

[0011] The connecting shell is provided with a limiting slot, the limiting slot is opposite to the linear moving piece, the rotating shaft is rotated to drive the directional piece to rotate, under the guiding effect of the guide piece, the linear moving piece moves towards the limiting slot and is inserted and matched with the limiting slot.

[0012] Further, the rotating piece comprises a gear, the gear is connected with the end of the rotating shaft, the gear is rotationally connected with the door handle, the rotating driving piece comprises a connecting plate and an engaging piece arranged at the end of the connecting plate, the end of the connecting plate away from the engaging piece is connected with the sliding button, and the engaging piece is engaged with the gear.

[0013] Further, the engaging piece comprises an open slot, the open slot extends along the length direction of the sliding slot, one inner wall of the open slot is provided with an engaging tooth, and the engaging tooth of the open slot is engaged with the gear.

[0014] Further, the guide piece comprises a circular base, the circular base is coaxial with the rotating shaft, and a convex portion is protruded from the edge of the end face of the circular base towards the rotating shaft; the end of the rotating shaft is provided with a flat shaft, the directional piece comprises a connecting seat, the connecting seat is provided with a boosting piece, an annular groove is formed between the connecting seat and the boosting piece, the linear moving piece is rotationally matched with the annular groove, the connecting seat and the boosting piece are both provided with an insertion hole which is inserted and matched with the flat shaft, an arc-shaped protrusion is arranged on the end face of the connecting seat towards the guide piece, and the arc-shaped protrusion is abutted against the edge of the circular base through the boosting effect of the boosting piece.

[0015] Further, the boosting piece comprises symmetrical guide pieces and symmetrical directional pieces, the symmetrical guide pieces are arranged on the inner wall of the door handle close to the connecting shell, the symmetrical guide pieces comprise a circular ring, the circular ring is provided with a recess, the recess corresponds to the convex portion, and the shape and size of the recess are same as those of the convex portion, the symmetrical directional pieces comprise a fixing seat, an arc-shaped protrusion is arranged on the end face of the fixing seat towards the symmetrical guide pieces, the arc-shaped protrusions are symmetrically arranged about the annular groove with the arc-shaped protrusions, and the arc-shaped protrusions are abutted against the annular end face of the circular ring.

[0016] Further, the straight line moving piece comprises a rotating ring, a hanging lug and a limiting rod, the rotating ring is rotationally connected with the annular groove, the hanging lug is fixedly connected with the outer circumferential surface of the rotating ring, and the limiting rod is fixedly connected with the hanging lug, the door outer handle is provided with a positioning hole corresponding to the limiting groove, the positioning hole is communicated with the insertion groove, the rotating ring is insertedly connected with the insertion groove, the hanging lug is insertedly connected with the positioning hole, and the limiting rod is inserted with the limiting groove under the guidance of the guide when the straight line moving piece moves towards the limiting groove, so that the rotation of the door outer handle is limited.

[0017] Further, the circular base is provided with a circular hole, the part close to the connecting shell of the circular hole is insertedly connected with the flat shaft, and the end part away from the connecting shell of the circular hole is provided with a hollow.

[0018] Further, the protruding parts of the circular base are two opposite ones, the arc-shaped protruding blocks of the connecting seat are two opposite ones, the recessed parts of the circular ring are two opposite ones, the arc-shaped protruding parts of the fixed seat are two opposite ones, and the numbers of the hanging lug and the limiting rod are both two opposite ones.

[0019] Further, the door inner handle and the door outer handle both adopt a shell structure and both have an inner cavity.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] The utility model discloses a door lock, which comprises a door, a door inner handle, a door outer handle, a connecting shell, a connecting seat, a circular ring, a fixed seat, a limiting groove, a guide, a straight line moving piece, a rotating shaft, a locking piece, a positioning piece, a rotating driving piece and a rotating piece. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model.

[0023] Figure 2 It is the door outer handle dismounting state diagram of the utility model.

[0024] Figure 3 It is one of the utility model's explosion drawing.

[0025] Figure 4 As Figure 2 The local structure schematic view in.

[0026] Figure 5 As the second explosion map of the utility model.

[0027] In the figure: 1, the door handle inside; 11, sliding groove; 12, sliding button; 13, rotating drive part; 131, connecting plate; 132, open slot; 14, rotating part; 15, rotating shaft; 151, flat shaft; 2, connecting shell; 21, limit slot; 3, door handle outside; 30, door cover; 31, guide part; 311, circular base; 312, protruding part; 313, circular hole; 314, rotating column; 315, flat hole; 32, symmetrical guide part; 321, circular ring; 322, recessed part; 33, annular wave groove; 34, directional part; 341, connecting seat; 342, arc-shaped protruding block; 35, symmetrical directional part; 351, fixed seat; 352, arc-shaped protrusion; 36, annular groove; 37, linear moving part; 371, rotating ring; 372, ear; 373, limit rod; 38, positioning hole; 39, insertion slot. DETAILED DESCRIPTION

[0028] The utility model will be further explained in detail below in combination with the drawings and specific embodiments. The terms such as "upper", "inner", "middle", "left", "right" and "one" cited in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model that can be implemented. The change or adjustment of the relative relationship is also regarded as the scope of the utility model that can be implemented without substantial change of technical content.

[0029] The utility model is designed to improve the user experience, and the door can be self-locked / counter-locked by the handle when the door is closed, which can improve the convenience and reduce the situation of forgetting to counter-lock after closing the door. Therefore, a button type door lock self-locking structure is designed, and the button type door lock self-locking structure of the utility model is introduced in detail as follows:

[0030] A button type door lock self-locking structure, as shown in Figures 1 to 5 , including handle assembly, sliding button 12, rotating part 14, guide part 31 and locking part.

[0031] The handle assembly comprises a door inner handle 1, a door outer handle 3, a connecting housing 2, a rotating shaft 15 and a movable lock tongue, the door inner handle 1 and the door outer handle 3 are both in a housing type structure and have inner cavities; the door inner handle 1 and the door outer handle 3 are arranged on two sides of the connecting housing 2, the connecting housing 2 is embedded on a door plate, the middle part of the rotating shaft 15 is rotationally connected with the connecting housing 2, and the two ends of the rotating shaft 15 are connected with the door inner handle 1 and the door outer handle 3 respectively, so that when the door inner handle 1 or the door outer handle 3 is rotated, the other handle can also be synchronously rotated with the rotating shaft 15.

[0032] The door inner handle 1 is provided with a sliding groove 11 on the side close to the door plate, a sliding button 12 is slidingly matched with the sliding groove 11, and the sliding button 12 is provided with a rotating driving part 13; a rotating part 14 is rotationally arranged in the door inner handle 1, and the end of the rotating shaft 15 is connected with the rotating part 14; when the sliding button 12 is slid, the rotating driving part 13 moves along the sliding groove 11 towards the rotating part 14 and drives the rotating part 14 to rotate.

[0033] The rotating part 14 comprises a gear, the gear is connected with the end of the rotating shaft 15 through a screw or a bolt, and the gear is also rotationally connected with the door inner handle 1; the rotating driving part 13 comprises a connecting plate 131 and a meshing part arranged at the end of the connecting plate 131, the end of the connecting plate 131 away from the meshing part is integrally connected with the sliding button 12, and the meshing part is engaged with the gear, so that when the sliding button 12 is pushed, the connecting plate 131 can be driven to move transversely, and the meshing part is engaged with the gear, so that the gear and the rotating shaft 15 are driven to rotate.

[0034] The meshing part comprises an open slot 132 integrally connected with the connecting plate 131, the open slot 132 extends along the length direction of the sliding groove 11, one inner wall of the open slot 132 is provided with a meshing tooth, and the meshing tooth of the open slot 132 is engaged with the gear, so as to realize the function of driving the gear and the rotating shaft 15 to rotate by using the connecting plate 131 and the open slot.

[0035] The door handle 3 is provided with a slot 39 extending towards the connecting housing 2, the guide 31 is arranged in the slot 39 of the door handle 3 and is opposite to the rotating shaft 15; the guide 31 comprises a circular base 311 coaxial with the rotating shaft 15, and the end surface of the circular base 311 towards the rotating shaft 15 is provided with a protruding part 312, and the number of the protruding parts 312 is two to form corresponding guide surfaces on the running edge of the circular base 311. The connecting housing 2 is provided with a limiting groove 21, and the locking part comprises a directional part 34 and a linear moving part 37, the directional part 34 is arranged at the other end of the rotating shaft 15, the linear moving part 37 is rotationally connected with the directional part 34 and is inserted and matched with the slot 39, and the directional part 34 is abutted with the guide surfaces of the guide 31. The connecting housing 2 is provided with the limiting groove 21 opposite to the linear moving part 37, the rotating shaft 15 is rotated to drive the directional part 34 to rotate, under the guidance of the guide 31, the linear moving part 37 moves forward and backward towards the limiting groove 21, when the linear moving part 37 is inserted and matched with the limiting groove 21, the linear moving part 39 is kept relatively fixed with the connecting housing 2, and at the same time, the consistency between the linear moving part 37 and the slot 39 is achieved, so that the free rotation of the door handle 3 is limited, and the function of the door lock self-locking is achieved.

[0036] In the embodiment, the end of the rotating shaft 15 is provided with a flat shaft 151, the directional part 34 comprises a connecting seat 341, the connecting seat 341 is connected with a boosting part by a screw, an annular groove 36 is formed between the connecting seat 341 and the boosting part, and the linear moving part 37 is rotationally matched with the annular groove 36 to realize the relative movement between the linear moving part 37 and the connecting seat 341 and the circular base 311; at the same time, the connecting seat 341 and the boosting part are both provided with an insertion hole inserted and matched with the flat shaft 151, the end surface of the connecting seat 341 towards the guide 31 is provided with an arc-shaped protruding block 342, the number of the arc-shaped protruding blocks 342 is two, the top end of the arc-shaped protruding block 342 corresponds to the bottom end of the guide surface of the guide 31, and the arc-shaped protruding block 342 is abutted with the edge of the circular base 311 by the boosting action of the boosting part. Therefore, in the process that the rotating shaft 15 drives the flat shaft 151 to rotate synchronously, under the guidance of the guide surface of the guide 31, the directional part 34 moves up and down, when the directional part 34 moves towards the connecting housing 2, the linear moving part 37 moves towards the limiting groove 21 and is inserted and matched with the limiting groove 21, so that the free rotation of the door handle 3 is limited, and the function of the door lock self-locking is achieved.

[0037] In this embodiment, the booster is in a relatively symmetrical structure with the positioning member and the guide member 31 to realize the function of stable guidance. The booster includes symmetrical guide members 32 and symmetrical orientation members 35. The symmetrical guide members 32 are arranged on the inner wall of the door outer handle 3 close to the connecting housing 2. The symmetrical guide members 32 include circular rings 321, which are provided with recesses 322. The recesses 322 are opposite to each other, and the two recesses 322 correspond to the two protrusions 312, respectively. The shape and size of the recesses 322 are the same as those of the protrusions 312. Therefore, the annular wave groove 33 is formed between the guide member 31 and the symmetrical guide member 32, so as to facilitate the stable and reciprocating fluctuation of the orientation member 34 and the symmetrical orientation member 35 in the wave groove, and at the same time, the linear moving member 37 approaches or moves away from the limiting groove 21, thereby realizing the self-locking or unlocking of the door lock.

[0038] The symmetrical orientation member 35 includes a fixed seat 351, which is provided with arc-shaped protrusions 352 on the end face facing the symmetrical guide member 32. The arc-shaped protrusions 352 are opposite to each other, and the arc-shaped protrusions 352 and the arc-shaped blocks 342 are symmetrically arranged about the annular groove 36. The distance between the vertex of the arc-shaped protrusion 352 and the vertex of the arc-shaped block 342 is equal to the distance between the guide surface of the guide member 31 and the guide surface of the symmetrical guide member 32, thereby realizing the function of the positioning member and the symmetrical positioning member slidingly fitted in the annular wave groove 33. Therefore, during the rotation of the rotating shaft 15, under the combined guidance of the guide surface of the guide member 31 and the guide surface of the symmetrical guide member 32, the positioning member, the linear moving member 37 and the symmetrical positioning member can realize the fluctuation function, and at the same time, the linear moving member 37 can be driven to move towards the limiting groove 21, thereby realizing the function of the self-locking of the door lock.

[0039] In the embodiment, in order to realize the function that the linear moving piece 37 overcomes the rotating movement of the rotating shaft 15 and is oriented to move towards the limiting groove 21. The linear moving piece 37 comprises a rotating ring 371, two hanging ears 372 and two limiting rods 373. The rotating ring 371 is rotationally matched with the annular groove 36. The two hanging ears 372 are respectively arranged on the outer circumferential surfaces of the opposite sides of the rotating ring 371. The two limiting rods 373 are respectively corresponding to the two hanging ears 372. One end of the limiting rod 373 is fixedly connected with the hanging ear 372. The insertion slot 39 of the door handle 3 is in a cylindrical shape. The door handle 3 is provided with two positioning holes 38 corresponding to the two hanging ears 372. The positioning hole 38 is in communication with the insertion slot 39 and is opposite to the limiting groove 21. The rotating ring 371 is slidably matched with the insertion slot 39. The two hanging ears of the linear moving piece 37 are slidably matched with the two positioning holes 372. Meanwhile, the limiting rod 373 is arranged in the positioning hole. Therefore, under the limiting effect of the positioning hole 38 and the hanging ear 372, in the process of rotating the rotating shaft 15 and the flat shaft 151, the linear moving piece 37 can be prevented from rotating together. Meanwhile, when the arc-shaped protrusion 342 abuts against the protruding part 312 of the guide piece 31, the linear moving piece 37 will be upwardly moved, thereby driving the limiting rod 373 of the linear moving piece 37 to move towards the limiting groove 21 and be matched with the limiting groove 21, so as to realize the function of self-locking of the door lock.

[0040] It should be noted that the protruding part 312, the arc-shaped protrusion 342, the recessed part 322 and the arc-shaped protrusion 352 are all provided with two, which is mainly to facilitate the application to the forward and reverse rotation of the rotating shaft 15. That is, when the rotating shaft is rotated forwardly or reversely, the limiting rod 373 can be quickly matched with the limiting groove 21, so as to realize the self-locking of the door lock. Meanwhile, the linear moving piece 37 of the utility model is provided with two limiting rods 373, which can make the overall structure of the linear moving piece 37 symmetrical and stable, so as to improve the stability of the limiting rod 373 in realizing the self-locking function of the door lock.

[0041] In addition, since the sliding button 12 is located in the door handle 1, in some special cases, the door may be mistakenly self-locked, for example, when children are playing indoors or adults operate incorrectly, the sliding button 12 is mistakenly operated to cause the door to be self-locked, in order for the outdoor personnel to timely release the self-locked state of the door, the door lock is also upgraded: the circular base 311 is provided with a circular hole 313, the circular hole 313 is rotationally matched with a rotating column 314, the rotating column 314 is provided with a through-shaped hole 315 corresponding to the flat shaft 151, the part of the through-shaped hole 315 close to the connecting shell 2 is insertedly matched with the flat shaft 151, and the part of the through-shaped hole 315 away from the connecting shell 2 is provided to be empty; at the same time, the handle part of the door handle 3 is provided with a face cover 30 covering the through-shaped hole 315, the face cover 30 is provided in a manner that can be fixed by glue or integrally formed at the edge connection and provided as a weak thin surface, so that when the face cover 30 is removed, the face cover 30 can be removed by forcible removal, and safety can be improved. After the face cover 30 is removed, the outdoor personnel can insert a wrench or the like into the through-shaped hole 315 to rotate, so as to drive the rotating column 314, the flat shaft 151 and the rotating shaft 15 to rotate together, and the straight line moving part 37 is moved forward and backward under the guidance of the guide surface of the guide part 31, so as to realize the function of releasing the self-locking of the door lock.

[0042] In summary, the sliding button 12, the rotating driving part 13 and the rotating part 14 are arranged on the door lock, when the sliding button 12 is pushed, the rotating driving part 13 is driven to slide and drive the rotating part 14 to rotate, the rotating shaft 15 is rotated synchronously, in the process of rotating the rotating shaft 15, the positioning part of the locking part is guided by the guide surface of the guide part 31, so that the locking part is moved up and down as a whole, and the straight line moving part 37 is moved towards the limiting groove 21, the straight line moving part 37 is insertedly matched with the limiting groove 21, so as to realize the function of self-locking of the door lock. Since the sliding button 12 is located on the door handle 1, when the door is closed, the door lock can be conveniently self-locked, compared with the reverse key and the button type reverse locking mode of the prior art, the sliding button 12 can be used to realize self-locking, so that the operation is simple, efficient and not easy to forget.

[0043] The embodiments of the utility model are not limited to this, according to the above content of the utility model, using the ordinary technical knowledge and usual means in the art, under the premise of not departing from the above basic technical thought of the utility model, the utility model can also make other various forms of modification, replacement or combination, all fall within the protection scope of the utility model.

Claims

1. A button-type door lock self-locking structure, characterized in that, The utility model provides a door handle assembly, which comprises a door handle, a door knob, a connecting shell, a rotating shaft and a movable lock tongue, the door handle and the door knob are arranged on two sides of the connecting shell respectively, the connecting shell is embedded in a door, the middle part of the rotating shaft is rotationally connected with the connecting shell, the two ends of the rotating shaft are connected with the door handle and the door knob respectively, the door knob is provided with a slot extending towards the connecting shell, and the door handle is provided with a sliding groove. A sliding button is arranged in the sliding groove of the door handle, the sliding button is provided with a rotating driving part, and the rotating driving part is arranged in the door handle. A rotating part is arranged in the door handle, the rotating shaft is connected with the rotating part, the sliding button is slid, the rotating driving part moves towards the rotating part and drives the rotating part to rotate. A guide part is arranged in the door knob and faces the rotating shaft. A locking part is arranged in the connecting shell, the locking part comprises a directional part and a linear moving part, the directional part is arranged at the end of the rotating shaft, the linear moving part is inserted into the slot to make the linear moving part slide along the extension direction of the slot, the linear moving part is rotationally connected with the directional part, and the directional part abuts against the guide surface of the guide part. The connecting shell is provided with a limiting slot, the limiting slot faces the linear moving part, the rotating shaft rotates and drives the directional part to rotate, the linear moving part moves towards the limiting slot under the guidance of the guide part, and the linear moving part is inserted into the limiting slot. The rotating part comprises a gear, the gear is connected with the end of the rotating shaft, the gear is rotationally connected with the door handle, the rotating driving part comprises a connecting plate and an engaging part arranged at the end of the connecting plate, the end of the connecting plate away from the engaging part is connected with the sliding button, and the engaging part engages with the gear.

2. The button-type door lock self-locking structure according to claim 1, characterized in that, The engaging part comprises an open slot extending along the length direction of the sliding groove, one inner wall of the open slot is provided with an engaging tooth, and the engaging tooth of the open slot engages with the gear.

3. The button-type door lock self-locking structure according to claim 2, characterized in that, The guide part comprises a circular base coaxial with the rotating shaft, the end surface of the rotating shaft is provided with a convex part, the end of the rotating shaft is provided with a flat shaft, the directional part comprises a connecting seat provided with a boosting part, an annular groove is formed between the connecting seat and the boosting part, the linear moving part rotationally engages with the annular groove, the connecting seat and the boosting part are provided with an insertion hole inserted into the flat shaft, the end surface of the connecting seat is provided with an arc-shaped protrusion abutting against the edge of the circular base under the boosting action of the boosting part.

4. The button-type door lock self-locking structure according to claim 1, characterized in that, ​ 5. The button-type door lock self-locking structure according to claim 4, characterized in that, The booster comprises symmetrical guiding members and symmetrical orientation members, the symmetrical guiding members are arranged on the inner wall of the connecting shell in the outer door handle, the symmetrical guiding members comprise a circular ring, the circular ring is provided with a recess, the recess corresponds to the protruding part, and the shape and size of the recess are the same as those of the protruding part, the symmetrical orientation members comprise a fixing seat, the fixing seat is provided with an arc-shaped protrusion on the end face of the symmetrical guiding member, the arc-shaped protrusion is arranged symmetrically with the arc-shaped protruding block about the annular groove, and the arc-shaped protrusion abuts against the annular end face of the circular ring.

6. The button-type door lock self-locking structure according to claim 5, wherein The straight line moving member comprises a rotating ring, a hanging ear and a limiting rod, the rotating ring is rotationally connected with the annular groove, the hanging ear is fixedly connected with the outer circumferential surface of the rotating ring, and the limiting rod is fixedly connected with the hanging ear, the outer door handle is provided with a positioning hole corresponding to the limiting groove, the positioning hole is in communication with the insertion slot, the rotating ring is insertedly connected with the insertion slot, the hanging ear is insertedly connected with the positioning hole, and the limiting rod is guided by the guiding member when the rotating shaft rotates, the limiting rod is insertedly connected with the limiting groove when the straight line moving member moves towards the limiting groove, and the rotation of the outer door handle is limited.

7. The button-type door lock self-locking structure according to claim 6, characterized in that, The protruding parts of the circular base are two opposite protruding parts, the arc-shaped protruding blocks of the connecting seat are two opposite arc-shaped protruding blocks, the recesses of the circular ring are two opposite recesses, the arc-shaped protrusions of the fixing seat are two opposite arc-shaped protrusions, and the number of the hanging ear and the limiting rod is two.

8. A push-button door lock self-locking structure according to any one of claims 4 to 7, characterized in that, The circular base is provided with a circular hole, the part of the circular hole close to the connecting shell is insertedly connected with the flat shaft, the end part of the circular hole away from the connecting shell is provided with an empty space, and the outer door handle is provided with a surface cover covering the flat shaft.

9. A push-button door lock self-locking structure according to any one of claims 1 to 7, characterized in that, The inner door handle and the outer door handle both adopt a shell structure and both have an inner cavity.

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