Invisible door lock knob mistaken opening prevention protective cover

Abstract

The utility model provides an invisible door lock knob mistaken opening prevention protective cover which comprises a bottom plate and a cover body, a U-shaped notch is formed in the bottom plate, and a plurality of locking parts are arranged on the bottom plate in the circumferential direction. The cover body comprises a bottom cover and a rotating cover, a plurality of mounting holes are formed in the bottom cover, the rotating cover is rotatably arranged on the bottom cover, a through hole is formed in the bottom cover, a plurality of first clamping teeth are arranged on the side wall of the through hole, an avoiding notch is formed in the side face of the rotating cover, a pressing block is mounted at the position of the avoiding notch of the rotating cover through a torsion spring, and second clamping teeth are arranged at the bottom of the pressing block. The bottom plate is locked through the knob cover plate of the invisible door, then the cover body is installed on the bottom plate, the knob is arranged in the rotary cover, in a normal state, the first clamping tooth and the second clamping tooth are meshed, the rotary cover cannot rotate, when the pressing block is pressed, the first clamping tooth and the second clamping tooth are separated, and meanwhile the pressing block abuts against the two ends of the knob. The knob can be rotated while the rotary cover is rotated, so that the invisible door is prevented from being opened by mistakenly rotating the knob by children, and the environmental safety of the children is improved.

Description

Technical Field

[0001] The utility model relates to the field of child locks, and more specifically, to a protective cover for preventing accidental opening of a knob of an invisible door lock. Background Art

[0002] As a type of door lock, invisible door locks are widely used in daily life. For example, in the existing patent with the patent number CN102383650B and the name "An Invisible Door Lock", children often turn the knob to open the door lock and go out when adults are not paying attention in daily life, resulting in accidental injuries to children. Therefore, how to prevent the rotary button of the invisible door lock from being accidentally opened by children is an urgent problem to be solved. Summary of the Utility Model

[0003] The utility model provides a protective cover for preventing accidental opening of a knob of an invisible door lock, aiming to improve the technical problem that the existing invisible door lock is easily accidentally opened by children.

[0004] To achieve the above object, the utility model adopts the following technical solutions: A protective cover for preventing accidental opening of a knob of an invisible door lock includes a bottom plate and a cover body. The bottom plate is provided with a U-shaped notch, and a plurality of locking parts are circumferentially arranged on the bottom plate; the cover body includes a bottom cover and a rotating cover. The bottom cover is provided with a plurality of mounting holes, the rotating cover is rotatably arranged on the bottom cover, the bottom cover is provided with a through hole, a plurality of first teeth are arranged on the side wall of the through hole, an avoidance notch is formed on the side surface of the rotating cover, a pressing block is installed at the position of the avoidance notch of the rotating cover through a torsion spring, and a second tooth is arranged at the bottom of the pressing block.

[0005] Further, the pressing block further includes a limiting plate, and the second tooth is arranged at the bottom of the limiting plate.

[0006] Further, the bottom cover includes a bottom lid and a cover ring. The bottom lid is provided with the mounting holes, a positioning post is arranged on one side of the mounting hole of the bottom lid, and the first teeth are arranged on the inner side surface of the cover ring.

[0007] Further, the locking part includes a fixing plate in a 7-shaped form arranged on the bottom plate, and a fixing hole is formed on the fixing plate.

[0008] Further, a plurality of positioning threaded holes are further arranged on the bottom lid, and a plurality of locking threaded holes are formed on the cover ring.

[0009] Further, the number of the first teeth is 8 - 12, and the number of the second teeth is 1 - 2.

[0010] Further, the rotating cover is made of a transparent material.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The anti - accidental - opening protection cover for the knob of an invisible door lock of the present utility model has a simple structure and is reasonably and ingeniously designed. It includes a bottom plate and a cover body. The bottom plate is provided with a U - shaped notch, and a number of locking parts are circumferentially arranged on the bottom plate; the cover body includes a bottom cover and a rotating cover. The bottom cover is provided with a number of mounting holes, the rotating cover is rotatably arranged on the bottom cover, the bottom cover is provided with a through - hole, a number of first locking teeth are arranged on the side wall of the through - hole, an avoidance notch is opened on the side surface of the rotating cover, a pressing block is installed at the position of the avoidance notch of the rotating cover through a torsion spring, and a second locking tooth is arranged at the bottom of the pressing block. When in use, first lock the bottom plate through the knob cover plate of the invisible door, and then install the cover body on the bottom plate so that the knob is placed inside the rotating cover. Under normal conditions, the first locking tooth and the second locking tooth are engaged, and the rotating cover cannot rotate. When the knob needs to be rotated, by pressing the pressing block, the first locking tooth and the second locking tooth are disengaged, and at the same time, the pressing block abuts against both ends of the knob. When the rotating cover is rotated, the knob can be rotated, realizing the prevention of children accidentally rotating the knob and opening the invisible door, and improving the environmental safety of children. Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0014] Figure 1 is a schematic structural diagram of an anti - accidental - opening protection cover for the knob of an invisible door lock of the present utility model;

[0015] Figure 2 is an exploded view of an anti - accidental - opening protection cover for the knob of an invisible door lock of the present utility model.

[0016] Figure 3 is a schematic structural diagram of the bottom plate of an anti - accidental - opening protection cover for the knob of an invisible door lock of the present utility model;

[0017] Figure 4 is a schematic structural diagram of the cover body of an anti - accidental - opening protection cover for the knob of an invisible door lock of the present utility model;

[0018] Figure 5 is a schematic structural diagram of another angle of an anti - accidental - opening protection cover for the knob of an invisible door lock of the present utility model;

[0019] Figure 6 is a schematic structural diagram of the bottom cover of an anti - accidental - opening protection cover for the knob of an invisible door lock of the present utility model;

[0020] Figure 7 is a schematic structural diagram of the cover ring of an anti - accidental - opening protection cover for the knob of an invisible door lock of the present utility model;

[0021] Figure 8 It is a schematic structural view of the rotating cover of a protection cover for preventing accidental opening of the knob of an invisible door lock of the present utility model;

[0022] Figure 9 It is a schematic structural view of the pressing block of a protection cover for preventing accidental opening of the knob of an invisible door lock of the present utility model.

[0023] Description of main component symbols

[0024] 10. Bottom plate; 101. U-shaped notch; 102. Fixed plate; 1021. Fixed hole;

[0025] 20. Bottom cover; 201. Bottom lid; 2011. Mounting hole; 2012. Positioning post; 2013. Positioning threaded hole; 202. Cover ring; 2021. First tooth; 2022. Locking threaded hole;

[0026] 30. Rotating cover; 301. Pressing block; 3011. Second tooth. Specific embodiments

[0027] To make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model. Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0028] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0030] Embodiment

[0031] Referring to Figures 1-4 As shown, the present utility model discloses a protective cover for preventing accidental opening of an invisible door lock knob, which includes a bottom plate 10 and a cover body. The bottom plate 10 is provided with a U-shaped notch 101, and a plurality of locking portions are circumferentially arranged on the bottom plate 10; specifically, the locking portion includes a fixing plate 102 in a shape of "7" arranged on the bottom plate 10, and a fixing hole 1021 is opened on the fixing plate 102. During use, first loosen the cover plate of the invisible door knob, insert the bottom plate 10 into the space between the knob cover plate and the door panel along the U-shaped notch 101, and then lock and rotate the cover plate to press and fix the bottom plate 10.

[0032] Referring to Figures 2-9 As shown, the cover body includes a bottom cover 20 and a rotating cover 30. The bottom cover 20 is provided with a plurality of mounting holes 2011, the rotating cover 30 is rotatably arranged on the bottom cover 20, a through hole is opened on the bottom cover 20, and a plurality of first engaging teeth 2021 are arranged on the side wall of the through hole. Specifically, the bottom cover 20 includes a bottom lid 201 and a cover ring 202. The bottom lid 201 is provided with mounting holes 2011, a positioning post 2012 is arranged on one side of the mounting hole 2011 of the bottom lid 201, the inner side surface of the cover ring 202 is provided with first engaging teeth 2021. The fixing plate 102 of the bottom plate 10 is inserted into the mounting hole 2011 and then the bottom lid 201 is rotated to align the fixing hole 1021 with the positioning post 2012, and the bottom lid 201 is locked to the bottom plate 10 by screws. A plurality of positioning threaded holes 2013 are further arranged on the bottom lid 201, and a plurality of locking threaded holes 2022 are opened on the cover ring 202. The cover ring 202 is locked to the bottom lid 201 by bolts passing through the locking threaded holes 2022 and the positioning threaded holes 2013. The rotating cover 30 is installed between the bottom lid 201 and the cover ring 202 and protrudes from the cover ring 202, and the first engaging teeth 2021 are close to the side surface of the rotating cover 30, so as to cover the knob.

[0033] Referring to Figures 1-9As shown in the figure, an avoidance notch is formed on the side surface of the rotary cover 30. The pressing block 301 is installed at the position of the avoidance notch of the rotary cover 30 through a torsion spring, and a second engaging tooth 3011 is arranged at the bottom of the pressing block 301. Specifically, in the normal state, the torsion spring (not shown in the figure) drives the pressing block 301 to protrude from the avoidance notch. The pressing block 301 further includes a limiting plate, and the second engaging tooth 3011 is arranged at the bottom of the limiting plate. The second engaging tooth 3011 extends outside the rotary cover 30. When the second engaging tooth 3011 engages with the first engaging tooth 2021 arranged on the inner side surface of the cover ring 202, the rotary cover 30 cannot rotate, and this is the locked state to prevent children from rotating the knob; when it is necessary to rotate the knob to open the invisible door, by pressing the two pressing blocks 301 to compress the torsion spring, at the same time, the pressing blocks 301 move towards the inside of the rotary cover and abut against both ends of the knob, driving the first engaging tooth 2021 to disengage from the second engaging tooth 3011, and rotating the rotary cover 30 while rotating the knob to realize the closing and opening of the invisible door lock, preventing children from rotating the knob to open the invisible door. The first engaging tooth 2021 includes 8 - 12, and the second engaging tooth 3011 includes 1 - 2. In this embodiment, the first engaging tooth 2021 includes 10, and the second engaging tooth 3011 includes 2, which improves the engaging strength.

[0034] In addition, the rotary cover 30 is made of a transparent material, which can timely observe the rotation condition of the knob.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An anti-misoperation protection cover for an invisible door lock knob, characterized in that; It includes a bottom plate and a cover body. The bottom plate is provided with a U-shaped notch, and several locking parts are circumferentially arranged on the bottom plate; the cover body includes a bottom cover and a rotating cover. The bottom cover is provided with several mounting holes, the rotating cover is rotatably arranged on the bottom cover, the bottom cover is provided with a through hole, several first teeth are arranged on the side wall of the through hole, an avoidance notch is arranged on the side surface of the rotating cover, a pressing block is installed at the position of the avoidance notch of the rotating cover through a torsion spring, and a second tooth is arranged at the bottom of the pressing block.

2. The anti-misoperation protection cover for the invisible door lock knob according to claim 1, characterized in that: The pressing block further includes a limiting plate, and the second tooth is arranged at the bottom of the limiting plate.

3. The anti-misoperation protection cover for the invisible door lock knob according to claim 1, characterized in that: The bottom cover includes a bottom lid and a cover ring. The bottom lid is provided with the mounting holes, a positioning post is arranged on one side of the mounting holes of the bottom lid, and the first teeth are arranged on the inner side surface of the cover ring.

4. The anti-misoperation protection cover for the invisible door lock knob according to claim 1, wherein: The locking part includes a 7-shaped fixing plate arranged on the bottom plate, and a fixing hole is arranged on the fixing plate.

5. The anti-misoperation protection cover for the invisible door lock knob according to claim 3, characterized in that: Several positioning threaded holes are further arranged on the bottom lid, and several locking threaded holes are arranged on the cover ring.

6. The anti-misoperation protection cover for the invisible door lock knob according to claim 1, wherein: The number of the first teeth is 8 - 12, and the number of the second teeth is 1 - 2.

7. The anti-misoperation protection cover for the invisible door lock knob according to claim 1, wherein: The rotating cover is made of a transparent material.

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