Door lock convenient to assemble

Abstract

The utility model discloses a door lock convenient to assemble, which comprises an inner handle and an outer handle which are connected through a square shaft. A square shaft sleeve used for being connected with a square shaft is arranged in the inner handle, and a counter locking assembly and a locking assembly are arranged in the square shaft sleeve, so that the door lock is more compact in structure, the size of the handle is reduced, the door handle is smaller, and the production cost of the door lock is reduced. The back locking assembly comprises a rotating part and a back locking button, a threaded groove is formed in the outer side wall of the rotating part, the back locking button is arranged on the inner handle in a sliding mode, and a pressing head at one end of the back locking button is matched with the threaded groove; the locking assembly comprises a locking cam and a locking piece which are rotationally arranged in the square shaft sleeve, the locking cam is arranged below the rotating piece, one end of the linkage plate is connected with the rotating piece, and the other end of the linkage plate is connected with the locking cam. The assembly difficulty of the door lock is reduced, the production efficiency is improved and the production cost is reduced; meanwhile, installation operation of the door lock is simplified, and installation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of door locks, and more particularly to a door lock that is easy to assemble. Background Art

[0002] A door lock is a commonly used door protection device to prevent illegal intrusion. It usually includes an inner base and an outer base installed on the inside and outside of the door panel. An inner handle and an outer handle are respectively rotatably provided on the inner base and the outer base. Generally, people can drive the lock bolt in the door frame to retract into the lock body by pressing down and turning the inner handle or the outer handle to open the door.

[0003] In order to prevent people outside the door from unlocking by turning the outer handle, the lock tongue is locked by the locking assembly so that the lock tongue cannot be retracted into the lock housing, thereby realizing the reverse locking of the door lock and improving the privacy of the room. In order to optimize the structure of the door lock, the locking assembly is built into the outer handle, and the reverse locking assembly that drives the locking assembly is built into the inner handle. However, in order to accommodate the locking assembly and the reverse locking assembly, the handle is made larger and has an unsightly appearance. In addition, the door lock assembly operation is relatively complicated. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a door lock that is easy to assemble.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A door lock that is easy to assemble, comprising an inner handle and an outer handle, wherein the inner handle is rotatably mounted on an inner base, and the outer handle is rotatably mounted on an outer base, and the inner and outer handles are connected by a square shaft; the inner handle is embedded with a square shaft sleeve for connecting to the square shaft, and the square shaft sleeve is embedded with an anti-locking assembly and a locking assembly, and the anti-locking assembly and the locking assembly are linked via a linkage plate;

[0007] The anti-locking assembly includes a rotating member and an anti-locking button. The outer wall of the rotating member is provided with a threaded groove. The anti-locking button is slidably provided on the inner handle, and a pressing head at one end thereof cooperates with the threaded groove.

[0008] The locking assembly includes a locking cam and a locking member rotatably disposed in a square shaft sleeve, wherein the locking cam is placed below the rotating member, and one end of the linkage plate is connected to the rotating member, and the other end is connected to the locking cam;

[0009] The inner base is provided with a locking groove adapted to the locking piece. The anti-lock button drives the rotating piece to rotate, and drives the locking cam to rotate through the linkage plate. The cam surface of the locking cam squeezes the locking piece outward, so that a part of the locking piece passes through the through hole of the square shaft sleeve and is placed in the locking groove, thereby locking the inner handle to the inner base.

[0010] The utility model is further provided with a limiting protrusion longitudinally on the inner side wall of the handle head of the inner handle, and a limiting groove adapted to the limiting protrusion is provided on the outer side wall of the square shaft sleeve. The limiting protrusion cooperates with the limiting groove to limit the relative rotation of the square shaft sleeve and the inner handle.

[0011] The utility model is further provided with limiting steps on both sides of the locking piece, and the limiting steps abut against the penetration hole to prevent the locking piece from being separated from the square shaft sleeve.

[0012] The utility model is further provided with: a flange is protruding outwards from the end of the square shaft, and after the square shaft is inserted from the upper end of the square shaft sleeve, the flange abuts against the bottom wall of the square shaft sleeve.

[0013] The utility model is further provided with: a pressing portion is provided on the outer side wall of the anti-lock button, a button window is provided on the inner handle, and the pressing portion passes through the button window.

[0014] The utility model is further configured that bearings are sleeved on both upper and lower ends of the rotating member.

[0015] The utility model is further provided with an emergency unlocking piece on the outer handle, one end of the emergency unlocking piece is connected to the linkage plate, and the other end is provided with an unlocking bearing hole.

[0016] The present invention has the following beneficial effects: the locking assembly and the rotating member of the anti-lock assembly of the door lock are both built into the square shaft sleeve and are installed on the inner handle through the square shaft sleeve, which makes the structure of the door lock more compact, reduces the volume of the handle, makes the door handle more compact, and improves the appearance of the door lock; reduces the production cost of the door lock; when assembling the door lock, first insert the square shaft from the top of the square shaft sleeve, and the flange at the upper end of the square shaft abuts against the bottom wall of the square shaft sleeve; then the locking cam with the linkage plate and the locking member are installed into the square shaft sleeve together; finally, the rotating member is installed into the square shaft sleeve along the upper end of the linkage plate, thereby completing the assembly of the locking assembly and the anti-lock assembly in the square shaft sleeve; finally, the assembled square shaft sleeve is inserted into the inner handle, thereby completing the complete assembly of the inner handle; reduces the assembly difficulty of the door lock, improves the production efficiency, and reduces the production cost; at the same time, when installing the door lock, it is only necessary to insert the square shaft on the inner handle along the inner base to connect it with the outer handle on the outer base, which simplifies the installation operation of the door lock and improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a door lock that is easy to assemble according to the present invention;

[0018] Figure 2 This is a schematic structural diagram of a door lock that is easy to assemble according to the present invention, with the square shaft removed;

[0019] Figure 3 This is an assembly diagram of a locking component and an anti-locking component of a door lock that is easy to assemble according to the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of a door lock that is easy to assemble according to the present invention;

[0021] Figure 5 This is a diagram showing the coordination between the locking assembly and the rotating member of a door lock that is easy to assemble according to the present invention;

[0022] Figure 6 This is a structural schematic diagram of an anti-locking assembly of a door lock that is easy to assemble according to the present invention;

[0023] Figure 7 This is a schematic structural diagram of an anti-lock button of a door lock that is easy to assemble according to the present invention;

[0024] Figure 8 This is a schematic structural diagram of a locking member of a door lock that is easy to assemble according to the present invention;

[0025] Figure 9 This is a schematic structural diagram of a square shaft sleeve of a door lock that is easy to assemble according to the present invention;

[0026] Figure 10 This is a structural schematic diagram of an inner handle of a door lock that is easy to assemble according to the present invention;

[0027] Explanation of the accompanying drawings: 1. Inner base; 11. Locking groove; 2. Outer base; 3. Inner handle; 31. Button window; 32. Limiting protrusion; 33. Square shaft sleeve; 331. Limiting groove; 332. Through hole; 34. Anti-locking assembly; 341. Rotating part; 3411. Threaded groove; 342. Anti-locking button; 3421. Clamping head; 3422. Pressing part; 35. Locking assembly; 351. Locking cam; 352. Locking part; 3521. Limiting step; 4. Outer handle; 41. Emergency unlocking part; 411. Unlocking hole; 5. Linkage plate; 6. Square shaft; 61. Flange. DETAILED DESCRIPTION

[0028] Refer to the attached Figures 1 to 10 The utility model is further described in detail for a door lock that is easy to assemble.

[0029] A door lock that is easy to assemble, comprising an inner handle 3 and an outer handle 4, wherein the inner handle 3 is rotatably mounted on an inner base 1, and the outer handle 4 is rotatably mounted on an outer base 2, and the inner handle 3 and the outer handle 4 are connected via a square shaft 6; the inner handle 3 is provided with a square shaft sleeve 33 for connecting to the square shaft 6, wherein a reverse locking assembly 34 and a locking assembly 35 are provided within the square shaft sleeve 33, and the reverse locking assembly 34 and the locking assembly 35 are linked via a linkage plate 5; the locking assembly 35 and the rotating member 341 of the reverse locking assembly 34 of the door lock are both built into the square shaft sleeve 33 and mounted on the inner handle 3 via the square shaft sleeve 33, making the door lock structure more compact, reducing the volume of the handle, making the door handle more compact, improving the appearance of the door lock, and reducing the production cost of the door lock;

[0030] The anti-locking assembly 34 includes a rotating member 341 and an anti-locking button 342. The outer wall of the rotating member 341 is provided with a threaded groove 3411. The anti-locking button 342 is slidably provided on the inner handle 3, and a pressing head 3421 at one end thereof cooperates with the threaded groove 3411.

[0031] The locking assembly 35 includes a locking cam 351 and a locking member 352 rotatably disposed in the square shaft sleeve 33. The locking cam 351 is placed below the rotating member 341. One end of the linkage plate 5 is connected to the rotating member 341, and the other end is connected to the locking cam 351.

[0032] The inner base 1 is provided with a locking groove 11 adapted for the locking member 352. The reverse locking button 342 drives the rotating member 341 to rotate, which drives the locking cam 351 to rotate via the linkage plate 5. The cam surface of the locking cam 351 presses the locking member 352 outward, causing a portion of the locking member 352 to pass through the through hole 332 of the square shaft sleeve 33 and be placed in the locking groove 11, thereby locking the inner handle 3 to the inner base 1. At the same time, the inner handle 3 is connected to the outer handle 4 via the square shaft 6. After the inner handle 3 is locked to the inner base 1, the outer handle 4 cannot rotate relative to the outer base 2, thereby realizing the reverse locking of the door lock.

[0033] When assembling the door lock, first insert the square shaft 6 from the top of the square shaft sleeve 33, and the flange 61 at the upper end of the square shaft 6 rests on the bottom wall of the square shaft sleeve 33; then install the locking cam 351 and the locking piece 352 with the linkage plate 5 into the square shaft sleeve 33, and finally install the rotating piece 341 into the square shaft sleeve 33 along the upper end of the linkage plate 5, so as to complete the assembly of the locking component 35 and the anti-locking component 34 in the square shaft sleeve 33, and finally insert the assembled square shaft sleeve 33 into the inner handle 3 to complete the complete assembly of the inner handle 3; reduce the assembly difficulty of the door lock, improve production efficiency, and reduce production costs; at the same time, when installing the door lock, you only need to insert the square shaft 6 on the inner handle 3 along the inner base 1 to connect it with the outer handle 4 on the outer base 2, which simplifies the installation operation of the door lock and improves installation efficiency.

[0034] A limiting protrusion 32 is longitudinally provided on the inner side wall of the handle head of the inner handle 3, and a limiting groove 331 is provided on the outer side wall of the square shaft sleeve 33 to match the limiting protrusion 32. The limiting protrusion 32 cooperates with the limiting groove 331 to limit the relative rotation of the square shaft sleeve 33 and the inner handle 3. When assembling the square shaft sleeve 33, the limiting groove 331 on the square shaft sleeve 33 is inserted into the inner handle 3 along the limiting protrusion 32 to facilitate the assembly operation of the square shaft sleeve 33 on the inner handle 3.

[0035] Limiting steps 3521 are provided on both sides of the locking piece 352, and the limiting steps 3521 abut against the penetration hole 332 to prevent the locking piece 352 from detaching from the square shaft sleeve 33; so that when the other shaft sleeve 33 is disassembled and assembled, the locking piece 352 in the square shaft sleeve 33 is prevented from falling out of the penetration hole 332.

[0036] The end of the square shaft 6 is provided with a flange 61 protruding outward. After the square shaft 6 is inserted from the upper end of the square shaft sleeve 33, the flange 61 abuts against the bottom wall of the square shaft sleeve 33; that is, after the square shaft 6 is assembled, it is no longer necessary to fix it to the square shaft sleeve 33 through a top screw, which simplifies the assembly process.

[0037] The outer side wall of the anti-lock button 342 is provided with a pressing portion 3422, and the inner handle 3 is provided with a button window 31, and the pressing portion 3422 passes through the button window 31; when the door lock is anti-locked or unlocked, the pressing portion 3422 of the anti-lock button 342 is pressed to make the anti-lock button 342 slide up and down along the inner handle 3, thereby driving the rotating member 341 to rotate; the upper and lower ends of the rotating member 341 are both provided with bearings, so that the rotating member 341 can rotate more smoothly in the square shaft sleeve 33.

[0038] An emergency unlocking member 41 is provided on the outer handle 4, one end of the emergency unlocking member 41 is connected to the linkage plate 5, and the other end is provided with an unlocking hole 411; a person outside the door can insert a tool into the unlocking hole 411 of the emergency unlocking member 41, twist the emergency unlocking member 41 to drive the linkage plate 5 to rotate, thereby driving the locking cam 351 to rotate, so that the locking member 352 on the locking cam 351 is retracted from the locking groove 11 of the inner base 1 into the square shaft sleeve 33, thereby realizing emergency unlocking of the door lock.

[0039] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A door lock that is easy to assemble, comprising an inner handle and an outer handle, wherein the inner handle is rotatably mounted on an inner base, the outer handle is rotatably mounted on an outer base, and the inner and outer handles are connected by a square shaft; wherein: The inner handle is equipped with a square shaft sleeve for connecting the square shaft, and the square shaft sleeve is equipped with an anti-locking component and a locking component, and the anti-locking component and the locking component are linked through a linkage plate; The anti-locking assembly includes a rotating member and an anti-locking button. The outer wall of the rotating member is provided with a threaded groove. The anti-locking button is slidably provided on the inner handle, and a pressing head at one end thereof cooperates with the threaded groove. The locking assembly includes a locking cam and a locking member rotatably disposed in a square shaft sleeve, wherein the locking cam is placed below the rotating member, and one end of the linkage plate is connected to the rotating member, and the other end is connected to the locking cam; The inner base is provided with a locking groove adapted to the locking piece. The anti-lock button drives the rotating piece to rotate, and drives the locking cam to rotate through the linkage plate. The cam surface of the locking cam squeezes the locking piece outward, so that a part of the locking piece passes through the through hole of the square shaft sleeve and is placed in the locking groove, thereby locking the inner handle to the inner base.

2. The door lock that is easy to assemble according to claim 1, characterized in that: A limiting protrusion is longitudinally provided on the inner side wall of the handle head of the inner handle, and a limiting groove adapted to the limiting protrusion is provided on the outer side wall of the square shaft sleeve. The limiting protrusion cooperates with the limiting groove to limit the relative rotation of the square shaft sleeve and the inner handle.

3. The door lock that is easy to assemble according to claim 2, characterized in that: Limiting steps are provided on both sides of the locking piece, and the limiting steps abut against the penetration hole to prevent the locking piece from being separated from the square shaft sleeve.

4. The door lock that is easy to assemble according to claim 3, characterized in that: The end of the square shaft is provided with a flange protruding outwards. After the square shaft is inserted from the upper end of the square shaft sleeve, the flange abuts against the bottom wall of the square shaft sleeve.

5. A door lock that is easy to assemble according to claim 1, 2, 3 or 4, characterized in that: A pressing portion is provided on the outer side wall of the anti-lock button, a button window is provided on the inner handle, and the pressing portion passes through the button window.

6. A door lock that is easy to assemble according to claim 1, 2, 3 or 4, characterized in that: The upper and lower ends of the rotating member are sleeved with bearings.

7. A door lock that is easy to assemble according to claim 1, 2, 3 or 4, characterized in that: An emergency unlocking piece is provided on the outer handle, one end of the emergency unlocking piece is connected to the linkage plate, and the other end is provided with an unlocking bearing hole.

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