Inner door lock with foldable handle

Abstract

The utility model relates to an inner door lock, in particular to an inner door lock with a foldable handle, which comprises bases mounted inside and outside a door, the two bases are internally provided with handle heads which are rotatably matched with the bases and realize unlocking through the matching of a square shaft, and the square shaft is internally provided with a counter locking plate for counter locking. The outer handle and the inner handle are used for being in linkage with the handle head, in the back locking state, the other end of the outer handle and the other end of the inner handle are folded by being attached to the door face, one end of the handle is attached to the door face, the other end of the handle is made into a tilting structure, and the back locking function is achieved by pressing the tilting part to the door face. Meanwhile, the effect of folding the handle is better achieved, the folded handle is tightly attached to the door face, potential safety hazards are reduced, the door lock is very attractive, the overall structure of the lock body is further optimized through continuous upgrading, and the door lock further has the advantages of being simple in structure, convenient to machine, easy to assemble and high in practicability.

Description

Technical Field

[0001] The utility model relates to an inner door lock, in particular to an inner door lock with a foldable handle. Background Art

[0002] With the advancement of technology, there are now various types of interior door locks. However, all locks on the market have an anti-lock function to prevent people outside the door from entering the door without a key, and the structures of the anti-lock function are also countless. A common method is to anti-lock the door lock by lifting the outer handle. For example, the patent with publication number CN219887779U, named "An Ecological Door Lock", is also the case. However, these locks do not think of protecting the lock when they are anti-locked. Most of the volume of the lock handle protrudes from the door surface, and children may accidentally touch it when playing. If you are not careful, the inner handle will hit the wall when closing the door, etc. How to create a new anti-locking method is the technical problem we need to solve now. Utility Model Content

[0003] In view of the deficiencies in the existing technology, the utility model provides an inner door lock with a foldable handle.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an internal door lock with a foldable handle, characterized in that it includes a base installed inside and outside the door, both bases are provided with a handle head that rotates with the base and is unlocked by cooperating with a square shaft, and the square shaft is provided with an anti-locking plate for the anti-locking function, and also includes an outer handle and an inner handle for linking the handle head, one end of the outer handle and the inner handle is rotatably connected to the handle head, in the unlocked state, the other end of the outer handle and the inner handle is linked with the handle head by lifting away from the door surface, and in the anti-locked state, the other end of the outer handle and the inner handle is folded by being close to the door surface.

[0005] The base is provided with a limit groove to prevent the outer handle and the inner handle from rotating with the axial direction of the handle head as the center axis. The outer handle and the inner handle are provided with limit blocks that match the limit groove. In the reverse locked state, the outer handle and the inner handle are locked into the limit groove by the limit blocks to achieve rotation limitation.

[0006] A locking block is provided in the handle head to prevent the limit block of the outer handle or the inner handle from escaping from the limit groove. The handle head is also provided with a first guide groove which is connected to the limit groove and for reciprocating movement of the locking block. The locking block is provided with a guide hole which cooperates with the anti-locking piece. The locking block realizes reciprocating movement in the handle head through the rotation of the anti-locking piece, and the unlocked state and the anti-locked state are converted through the reciprocating movement of the locking block.

[0007] The limit block is provided with a protrusion that matches the locking block, and the outer handle and the inner handle are rotationally limited by the cooperation between the protrusion and the end of the locking block.

[0008] The end of the locking block and a matching side of the protrusion are provided with a guide surface for facilitating the conversion from the unlocked state to the reversed locked state.

[0009] A first elastic device for forcing the locking block to clamp the protrusion is arranged in the first guide groove.

[0010] The outer handle and the inner handle are respectively provided with a lock core device and a turning button which cooperate with the anti-locking piece.

[0011] The handle head is provided with a pin for the outer handle or the inner handle to rotate and cooperate with, the outer handle and the inner handle are provided with mounting holes for cooperating with the pin, the number of the pins is two and they are arranged symmetrically, the handle head is provided with a third guide groove for cooperating with the pin, and the third guide groove is provided with a third elastic device that forces the pin to be stuck in the mounting hole.

[0012] The handle head is provided with a spring block for forcing the outer handle and the inner handle to lift up and away from the door surface, the handle head is provided with a second guide groove for the spring block to reciprocate, the second guide groove is provided with a second elastic device, and the spring block is elastically pressed on the outer handle and the inner handle through the cooperation of the second elastic device.

[0013] An installation groove for assembling the decorative panel is provided on the inner handle and / or the outer handle at a position relative to the human hand grip, and the installation panel is fixedly assembled in the installation groove by magnetic adsorption.

[0014] The beneficial effects of the utility model are as follows: one end of the handle is close to the door surface, and the other end is made into a tilted structure. The anti-locking function is realized by pressing the tilted part to the door surface, and the folding effect of the handle is also better achieved. The folded handle is close to the door surface, which not only reduces safety hazards but also looks very beautiful. Since the handle is close to the door surface, children are prevented from playing with the handle to a large extent. Through continuous upgrading, the overall structure of the lock body is further optimized. The utility model also has the characteristics of simple structure, convenient processing and easy assembly, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of Example 1 in the unlocked state;

[0016] Figure 2 This is a schematic diagram of the structure of Example 1 when the inner handle starts the anti-locking function;

[0017] Figure 3 The structural decomposition of Example 1 Figure 1 ;

[0018] Figure 4 The structural decomposition of Example 1 Figure 2 ;

[0019] Figure 5It is a cross-sectional view of Example 1 when the inner handle is in the state of activating the anti-locking function;

[0020] Figure 6 is a cross-sectional view of Example 1 in an unlocked state;

[0021] Figure 7 This is a schematic diagram of the structure of Example 1 when the base, upper cover, handle head and locking block cooperate;

[0022] Figure 8 This is a schematic diagram of the structure of Example 1 when the anti-locking function is released under the cooperation of the base, the upper cover, the handle head and the lock block;

[0023] Fig. 9 This is a schematic diagram of the base structure of Example 1;

[0024] Fig.10 This is a schematic diagram of the structure of the outer handle of Example 1;

[0025] Fig.11 This is a schematic structural diagram of the locking block of Example 1;

[0026] Fig.12 This is a schematic diagram of the structure of the handle of Example 1;

[0027] Fig.13 This is a schematic diagram of the structure of Example 2 when the anti-lock function is activated on the outside handle;

[0028] Fig.14 This is a schematic diagram of the structure of Example 2 in the unlocked state. DETAILED DESCRIPTION

[0029] Embodiment 1: Figure 1-Figure 12 As shown, a foldable handle interior door lock comprises a base 110 installed inside and outside the door, a handle head 120 is provided in both bases 110 for rotationally cooperating with the base 110 and realizing unlocking through cooperation with a square shaft 130, a reverse locking piece 131 for reverse locking function is provided in the square shaft 130, and an outer handle 100 and an inner handle 200 for linkage with the handle head 120 are also included, one end of the outer handle 100 and the inner handle 200 are rotationally connected to the handle head 120, and in the unlocked state, the outer handle 100 and the inner handle 200 are The other end of 0 is linked with the handle head 120 by tilting away from the door surface. The unlocked state here refers to the state without opening the anti-lock state. In this case, the lock can be unlocked by rotating the outer handle 100 and the inner handle 200. In the anti-lock state, the other ends of the outer handle 100 and the inner handle 200 are folded by approaching the door surface. The matching relationship between the square shaft 130 and the lock tongue is a relatively mature technology in the field of locks. As long as the square shaft 130 is rotated, the lock will open. No more details are given here. The specific usage method is shown below.

[0030] The base 110 is provided with a limiting groove 111 to prevent the outer handle 100 and the inner handle 200 from rotating around the axial direction of the handle head 120. The outer handle 100 and the inner handle 200 are provided with a limiting block 140 that matches the limiting groove 111. In the reverse locked state, the outer handle 100 and the inner handle 200 are locked in the limiting groove 111 by the limiting block 140 to achieve rotation limitation. When reverse locked, the limiting block 140 is stuck in the limiting groove 111, so the outer handle 100 and the inner handle 200 are unable to rotate, and the lock body cannot be opened.

[0031] The handle head 120 is provided with a locking block 121 for preventing the limiting block 140 of the outer handle 100 or the inner handle 200 from being separated from the limiting groove 111. The handle head 120 is also provided with a first guide groove 122 which is connected to the limiting groove 111 and for the reciprocating motion of the locking block 121. The locking block 121 is provided with a guide hole 132 which cooperates with the anti-locking piece 131. The locking block 121 realizes reciprocating motion in the handle head 120 through the rotation of the anti-locking piece 131, and the unlocked state and the anti-locked state are converted through the reciprocating motion of the locking block 121.

[0032] The limit block 140 is provided with a protrusion 141 that cooperates with the locking block 121. The outer handle 100 and the inner handle 200 realize rotation limitation through the cooperation between the protrusion 141 and the end of the locking block 121. In the reverse locking state, the locking block 121 always clamps the protrusion 141.

[0033] The end of the locking block 121 and the mating side of the protrusion 141 are provided with a guide surface 123 for convenient conversion from the unlocked state to the reversed state. The guide surface 123 is added so that the locking block 121 can be temporarily retracted into the first guide groove 122 when the inner handle 200 and the outer handle 100 are turned inward to open the reversed function. When the protrusion 141 reaches the bottom of the end of the locking block 121, the locking block 121 will extend out of the first guide groove 122 again to jam the protrusion 141. No key or knob 210 is required to make the locking block 121 enter the first guide groove 122, which is highly practical.

[0034] A first elastic device 124 for forcing the locking block 121 to clamp the protrusion 141 is provided in the first guide groove 122. The first elastic device 124, the second elastic device 129 and the third elastic device 127 can all adopt spring structures, which are easy to install and low in cost. The first elastic device 124 enables the locking block 121 to elastically clamp the protrusion 141.

[0035] The outer handle 100 and the inner handle 200 are respectively provided with a lock core device 150 and a knob 210 that cooperate with the anti-locking plate 131. The main function of the knob 210 is to release the anti-locking function. Whether inside or outside the house, the anti-locking function is activated by pushing the inner handle 200 and the outer handle 100 to the door surface.

[0036] The handle head 120 is provided with a pin 125 for rotationally engaging with the outer handle 100 or the inner handle 200, and the outer handle 100 and the inner handle 200 are provided with mounting holes 160 for engaging with the pin 125. The number of the pins 125 is two and they are symmetrically arranged, and the handle head 120 is provided with a third guide groove 126 for engaging with the pin 125. The third guide groove 126 is provided with a third elastic device 127 that forces the pin 125 to be inserted into the mounting hole 160. In addition, an upper cover 220 is provided on the base 110, and a through hole 221 is provided on the upper cover 220 at the inner handle 200 and at a position corresponding to the pin 125. A sharp tool can be inserted into the through hole 221 to disengage the pin 125 from the mounting hole 160, thereby removing the inner handle 200, and then the lock bodies can be disassembled one by one, which will not be elaborated herein.

[0037] The handle head 120 is provided with a spring block 170 forcing the outer handle 100 and the inner handle 200 to tilt up and away from the door surface. The handle head 120 is provided with a second guide groove 128 for the spring block 170 to reciprocate. The second guide groove 128 is provided with a second elastic device 129. The spring block 170 is elastically pressed on the outer handle 100 and the inner handle 200 by the second elastic device 129. The addition of the spring block 170 allows the outer handle 100 and the inner handle 200 to quickly pop open after the anti-work function is released, which is highly practical.

[0038] An installation groove 190 for assembling the decorative panel 180 is provided on the inner handle 200 and / or the outer handle 100 and at a position relative to the human hand grip. The installation panel is fixedly installed in the installation groove 190 by magnetic adsorption. The detachable design of the decorative panel 180 can increase the sense of design of the handle and customize the customer's favorite color or pattern. A magnet is provided in the installation groove 190, and an iron installation sheet is provided on the back of the decorative panel 180. The decorative panel 180 can be inserted into the installation groove 190 by fixing the wooden board and the installation sheet. The use of magnetic adsorption makes disassembly and assembly more convenient.

[0039] Directions:

[0040] Since the outer handle 100 and the inner handle 200 of the present application have two rotation directions, for the sake of ease of understanding, the rotation with the axial direction of the handle head 120 as the central axis is referred to as the door opening rotation direction, and the rotation with the axial direction of the pin 125 as the central axis is referred to as the anti-locking rotation direction. In the unlocked state, the outer handle 100 and the inner handle 200 are in a tilted state, such as Figure 1 As shown, it is convenient for hand holding, and the limit block 140 is separated from the limit groove 111. At this time, the door can be opened by rotating the outer handle 100 and the inner handle 200 in the door opening rotation direction;

[0041] When it is necessary to reverse-lock the lock body from outside the door, the raised end of the outside handle 100 needs to be pressed toward the door surface. During the pressing process, the protrusion 141 on the outside handle 100 causes the lock block 121 to temporarily retract into the first guide groove 122. When the protrusion 141 reaches the bottom of the lock block 121, the lock block 121 extends out of the first guide groove 122 again to clamp the protrusion 141, so that the outside handle 100 is limited. At this time, the outside handle 100 cannot be rotated in the reverse-locking rotation direction. At the same time, the limiting block 140 is also stuck in the limiting groove 111, and the outside handle 100 cannot be rotated in the door opening rotation direction, and the lock is in the reverse-locking state. When it is necessary to reverse-lock the lock body from inside the door, the method for the outside handle 100 outside the door is the same, and no further description is given. It should be noted that no matter whether it is inside or outside the door, the reverse-locking function can only be activated by pushing the outside handle 100 and the inside handle 200 to the door surface;

[0042] When the anti-lock function needs to be released, if you are outside the door, you only need to insert the matching key and turn the lock cylinder. The lock cylinder is linked to the anti-lock plate 131, which means that the anti-lock plate 131 is rotated. In this way, with the cooperation of the guide hole 132, the lock block 121 starts to move and retracts into the first guide groove 122, thus releasing the outer handle 100. The outer handle 100 and the inner handle 200 are bounced open by the spring block 170 and stand up again. The limit block 140 is separated from the limit groove 111 again, and the lock enters the unlocked state; if you are inside the door, you only need to turn the knob 210, because the knob 210 is linked to the anti-lock plate 131, but whether it is inside or outside the door, to release the anti-lock function, that is, to enter the unlocked state, the outer handle 100 and the inner handle 200 will stand up.

[0043] Embodiment 2: Figure 13-14 As shown, the difference between this embodiment and embodiment 1 is that the area of ​​the upper cover 220 is further increased, so that the entire outer handle 100 or the inner handle 200 can be covered. In embodiment 1, when the outer handle 100 and the inner handle 200 are in the reverse locked state, there is still a gap between them and the door surface. Although the hand cannot be inserted into the gap, it is still not aesthetically pleasing. Lengthening the upper cover 220 solves this problem to a large extent, making the lock body more aesthetically pleasing and more practical as a whole.

[0044] The above shows and describes the basic principle, main features and advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, simple changes and substitutions by ordinary technicians in this field are within the protection scope of the utility model.

Claims

1. An interior door lock with a foldable handle, characterized in that: The invention comprises a base (110) installed inside and outside the door, wherein the two bases (110) are each provided with a handle head (120) which is rotatably matched with the base (110) and is unlocked by matching with a square shaft (130), wherein the square shaft (130) is provided with an anti-locking piece (131) for an anti-locking function, and further comprises an outer handle (100) and an inner handle (200) for linking the handle head (120), wherein one end of the outer handle (100) and the inner handle (200) are rotatably connected to the handle head (120), and in an unlocked state, the other end of the outer handle (100) and the inner handle (200) are linked with the handle head (120) by being lifted away from the door surface, and in an anti-locked state, the other end of the outer handle (100) and the inner handle (200) are folded close to the door surface.

2. An interior door lock with a foldable handle as claimed in claim 1, characterized in that: The base (110) is provided with a limiting groove (111) for preventing the outer handle (100) and the inner handle (200) from rotating with the axial direction of the handle head (120) as the central axis; the outer handle (100) and the inner handle (200) are provided with a limiting block (140) that matches the limiting groove (111); in the reverse locking state, the outer handle (100) and the inner handle (200) are locked into the limiting groove (111) by the limiting block (140) to achieve rotation limitation.

3. An interior door lock with a foldable handle as claimed in claim 2, characterized in that: The handle head (120) is provided with a locking block (121) for preventing a limiting block (140) of an outer handle (100) or an inner handle (200) from being separated from a limiting groove (111); the handle head (120) is also provided with a first guide groove (122) which is in communication with the limiting groove (111) and for reciprocating movement of the locking block (121); the locking block (121) is provided with a guide hole (132) for matching an anti-locking plate (131); the locking block (121) is reciprocated in the handle head (120) by the rotation of the anti-locking plate (131); and the unlocked state and the anti-locked state are switched by the reciprocating movement of the locking block (121).

4. An interior door lock with a foldable handle as claimed in claim 2, characterized in that: The limiting block (140) is provided with a protrusion (141) that matches the locking block (121), and the outer handle (100) and the inner handle (200) are rotationally limited by the matching of the protrusion (141) and the end of the locking block (121).

5. An interior door lock with a foldable handle as claimed in claim 4, characterized in that: The end of the locking block (121) and the mating side of the protrusion (141) are provided with a guide surface (123) for facilitating the conversion from the unlocked state to the reversed locked state.

6. An interior door lock with a foldable handle as claimed in claim 3, characterized in that: A first elastic device (124) for forcing the locking block (121) to clamp the protrusion (141) is provided in the first guide groove (122).

7. An interior door lock with a foldable handle as claimed in claim 1, characterized in that: The outer handle (100) and the inner handle (200) are respectively provided with a lock core device (150) and a rotary knob (210) that cooperate with the anti-locking plate (131).

8. An interior door lock with a foldable handle as claimed in claim 1, characterized in that: The handle head (120) is provided with a pin (125) for rotationally engaging with the outer handle (100) or the inner handle (200); the outer handle (100) and the inner handle (200) are provided with mounting holes (160) for engaging with the pin (125); the number of the pins (125) is two and they are symmetrically arranged; the handle head (120) is provided with a third guide groove (126) for engaging with the pin (125); and the third guide groove (126) is provided with a third elastic device (127) for forcing the pin (125) to be inserted into the mounting hole (160).

9. An interior door lock with a foldable handle as claimed in any one of claims 1 to 8, characterized in that: The handle head (120) is provided with a spring block (170) for forcing the outer handle (100) and the inner handle (200) to tilt up and away from the door surface. The handle head (120) is provided with a second guide groove (128) for the spring block (170) to reciprocate. A second elastic device (129) is provided in the second guide groove (128). The spring block (170) is pressed against the outer handle (100) and the inner handle (200) by the elastic cooperation of the second elastic device (129).

10. An interior door lock with a foldable handle as claimed in claim 9, characterized in that: An installation groove (190) for assembling the decorative panel (180) is provided on the inner handle (200) and / or the outer handle (100) at a position relative to the human hand grip, and the installation panel is fixedly assembled in the installation groove (190) by means of magnetic adsorption.

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