Handle lock capable of preventing mistaken opening

Abstract

The utility model discloses a handle lock capable of preventing mistaken opening. The handle lock comprises a mounting seat, a rotating handle rotationally arranged on the mounting seat, and a square rod inserted into the rotating handle, a locking ring is arranged on the mounting base, a plurality of locking grooves are formed in the periphery of the locking ring at intervals, an unlocking rod is arranged in the rotating handle in a sliding mode, a non-arc-shaped locking convex part is formed on the unlocking rod, the rotating handle has a locking state and an unlocking state, and when the rotating handle is in the locking state, the unlocking convex part is locked in the locking state. When the locking convex part is arranged in the locking groove, the rotation of the rotating handle is limited, and when the rotating handle is in an unlocking state, the locking convex part moves downwards and is separated from the locking groove; a damping ring is rotatably arranged at the bottom of the mounting seat, the damping ring is clamped with the rotating handle, a damping convex part is formed on the mounting seat, and a plurality of damping grooves for placing the damping convex part are formed in the periphery of the damping ring at intervals.

Description

Technical Field

[0001] The utility model relates to the technical field of door and window locks, in particular to a handle lock which prevents accidental opening. Background Art

[0002] Handle locks are commonly used safety devices in people's lives. They are hardware designed for space privacy.

[0003] In the related art, a handle lock is provided with a keyhole and a handle on the side outside the door leaf. The user unlocks the door with a key and then opens it with the handle. A rotating part is provided on the side inside the room of the handle lock. The user can directly turn the rotating part by hand to open the handle lock directly.

[0004] The handle lock in the prior art is only provided with a button for locking and unlocking, but the locking force of the button is insufficient. Under a certain external force, the handle in the locked state can still be forcibly rotated, causing children to accidentally touch the rotating part on the door leaf and open the handle lock. At the same time, because children are too young to be aware of closing the door, strangers may enter the house through the open door leaf, creating a safety hazard. Utility Model Content

[0005] In order to solve the technical problems existing in the background technology, the utility model proposes a handle lock that prevents accidental opening.

[0006] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0007] A handle lock for preventing accidental opening comprises a mounting base, a rotating handle rotated on the mounting base, and a square rod inserted into the rotating handle;

[0008] The mounting seat is provided with a locking ring, and a plurality of locking grooves are arranged at intervals on the outer circumference of the locking ring. An unlocking lever is slidably provided in the rotating handle, and a non-arc-shaped locking protrusion is formed on the unlocking lever. The rotating handle includes a locked state and an unlocked state. When the rotating handle is in the locked state, the locking protrusion is placed in the locking groove to limit the rotation of the rotating handle. When the rotating handle is in the unlocked state, the locking protrusion moves downward and disengages from the locking groove.

[0009] A damping ring is rotated on the bottom of the mounting seat and is clamped with the rotating handle. A damping convex portion is formed on the mounting seat, and a plurality of damping grooves for inserting the damping convex portions are arranged at intervals on the outer circumference of the damping ring.

[0010] Preferably, the unlocking lever includes a pressing portion and a locking portion, the locking portion is inserted into the pressing portion, the end of the locking portion forms a locking protrusion, and the locking protrusion is formed on the locking protrusion. Through the above improvement, when the unlocking lever is in the locked state, the unlocking lever is in the initial position, at which time the locking protrusion on the locking protrusion is placed in the locking groove, thereby restricting the rotation of the rotating handle. When the unlocking lever is in the unlocked state, the pressing portion drives the locking portion to descend, causing the locking protrusion on the locking protrusion to disengage from the locking groove, allowing the rotating handle to rotate.

[0011] Preferably, a return spring is sleeved on the pressing portion, and a limit plate is formed within the rotating handle to limit the upward movement of the locking portion. The locking portion is inserted into the limit plate and connected to the pressing portion. One end of the return spring abuts the limit plate, and the other end abuts the pressing portion, so that the pressing portion always has an upward movement tendency. Through the above improvement, the return spring will act on the pressing portion, so that the entire unlocking lever always has an upward movement tendency, realizing the automatic reset of the unlocking lever, and the limit plate can limit the locking portion, preventing the unlocking lever from separating from the rotating handle.

[0012] Preferably, a damping spring is sleeved on the locking ring, and the damping spring abuts against the bottom of the unlocking lever. Through the above improvement, the damping spring abuts against the bottom of the unlocking lever, thereby increasing the force required to press down the unlocking lever, further reducing the chance of accidental touch reduction.

[0013] Preferably, the rotating handle is formed with a snap-fitting protrusion, the damping ring is formed with a snap-fitting groove for receiving the snap-fitting protrusion, and a reinforcing metal ring is provided at the end of the damping ring. The rotating handle and the damping ring are riveted together, or the reinforcing metal ring and the damping ring are riveted together. With the above improvements, the reinforcing metal ring can be located at the end surface of the damping ring. Its main function is to connect the rotating handle and the damping ring to form an integral whole through riveting, thereby increasing the connection strength.

[0014] Preferably, a plug-in protrusion is formed on the bottom of the locking ring, and a plug-in groove is formed on the mounting seat for the plug-in protrusion to be placed in. Through the above improvements, the reliability of the locking ring installation is improved and the locking ring is prevented from rotating.

[0015] Preferably, a positioning ring is provided on the mounting seat, a plurality of anti-rotation protrusions are formed on the outer periphery of the positioning ring, and an anti-rotation groove is formed on the locking ring for the anti-rotation protrusions to be placed in. Through the above improvements, the reliability of the locking ring installation is further improved.

[0016] Preferably, the rotating handle is provided with a limiting convex portion, and a rotation-stopping channel for the locking protrusion to slide is formed between the limiting convex portions. With the above improvement, the limiting convex portion can slide up and down in the rotation-stopping channel, and the rotation-stopping channel restricts the limiting convex portion from rotating, so that the rotating handle rotates synchronously with the unlocking lever.

[0017] Preferably, the locking protrusion is in the shape of a regular polygon. Through the above improvements, the locking protrusion on the locking protrusion is in a non-circular arc shape, which improves the strength of the locking protrusion and the locking ring when they are engaged, and prevents the rotating handle from being forcibly rotated.

[0018] Preferably, the outer periphery of the locking portion is formed with a plurality of abutting protrusions, the pressing portion is formed with a connecting groove for the locking portion to be inserted, and the abutting protrusions abut against the groove wall of the connecting groove. Through the above improvements, the reliability of the connection between the locking portion and the pressing portion is improved.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0020] By setting the locking protrusion on the unlocking rod to a non-arc shape, the clamping strength between the locking protrusion and the locking ring is increased, so that when the rotating handle is in the locked state, greater force is required to rotate the rotating handle. In addition, a damping ring is provided at the bottom of the mounting seat, and the damping ring is clamped with the rotating handle, which further increases the force required to rotate the rotating handle, thereby preventing children from accidentally touching the rotating handle, causing the rotating handle to rotate and leading to mislocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the overall structure of the utility model;

[0022] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0023] Figure 3 It is an exploded view of the overall structure of the utility model;

[0024] Figure 4 This is a cross-sectional view of the unlocking lever and the mounting seat of the utility model;

[0025] Figure 5 This is a structural diagram of the bottom of the mounting base of the utility model;

[0026] Figure 6 This is a schematic structural diagram of the positioning ring of the utility model;

[0027] Figure 7 This is a schematic structural diagram of the locking ring of the utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the locking ring and the positioning ring of the utility model;

[0029] Figure 9 This is a schematic diagram of the structure of the rotating handle of the utility model;

[0030] Figure 10 This is a schematic structural diagram of the damping ring of the utility model;

[0031] Figure 11 This is a cross-sectional view of an embodiment of the reinforced metal ring of the utility model;

[0032] Figure 12 This is a structural schematic diagram of another embodiment of the reinforced metal ring of the utility model;

[0033] In the figure: 1. Mounting seat; 2. Rotating handle; 3. Unlocking lever; 4. Locking ring; 5. Damping ring; 6. Square rod; 1.1. Locking protrusion; 1.2. Locking groove; 1.3. Damping protrusion; 1.4. Damping groove; 2.1. Pressing portion; 2.2. Locking portion; 2.3. Locking protrusion; 2.4. Return spring; 2.5. Limiting platform; 2.6. Damping spring; 3.1. Clamping protrusion; 3.2. Clamping groove; 3.3. Reinforced metal ring; 4.1. Inserting protrusion; 4.2. Inserting groove; 4.3. Positioning ring; 4.4. Anti-rotation protrusion; 4.5. Anti-rotation groove; 4.6. Limiting protrusion; 4.7. Anti-rotation channel; 5.1. Tightening protrusion; 5.2. Connecting groove; DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] It should be understood that although terms such as upper, middle, lower, top, end, etc. appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish elements from each other for ease of understanding, and are not used to define any direction or order limitation.

[0036] like Figure 1-12 As shown, a handle lock for preventing accidental opening includes a mounting base 1, a rotating handle 2 rotated on the mounting base 1, and a square rod 6 inserted into the rotating handle 2.

[0037] Specifically, a locking ring 4 is provided on the mounting base 1, and a plurality of locking grooves 1.2 are arranged at intervals on the outer circumference of the locking ring 4, and an unlocking rod 3 is slidingly provided in the rotating handle 2. The unlocking rod 3 rotates with the rotating handle 2. A non-arc-shaped locking protrusion 1.1 is formed on the unlocking rod 3. The rotating handle 2 includes a locked state and an unlocked state. When the rotating handle 2 is in the locked state, the locking protrusion 1.1 is placed in the locking groove 1.2 to limit the rotation of the rotating handle 2. When the rotating handle 2 is in the unlocked state, the locking protrusion 1.1 moves downward and disengages from the locking groove 1.2. At this time, the rotating handle 2 can be rotated.

[0038] In addition, a damping ring 5 is provided at the bottom of the mounting base 1, which is engaged with the rotating handle 2. A damping protrusion 1.3 is formed on the mounting base 1, and a plurality of damping grooves 1.4 for the damping protrusions 1.3 to be placed are arranged at intervals on the outer circumference of the damping ring 5.

[0039] By setting the locking protrusion 1.1 on the unlocking rod 3 to a non-arc shape, the clamping strength between the locking protrusion 1.1 and the locking ring 4 is increased, so that when the rotating handle 2 is in a locked state, compared with the traditional arc-shaped locking protrusion 1.1, it is necessary to overcome a greater force when forcibly driving the rotating handle 2, and a damping ring 5 is provided at the bottom of the mounting base 1, and the damping ring 5 is clamped with the rotating handle 2, which further increases the force required when the rotating handle 2 is rotated, thereby preventing children from accidentally touching it, causing the rotating handle 2 to rotate, resulting in mislocking.

[0040] like Figures 2 to 4 As shown, a further explanation of the implementation method of the unlocking rod 3 in this embodiment is provided, wherein the unlocking rod 3 includes a pressing portion 2.1 and a locking portion 2.2, the locking portion 2.2 is inserted into the pressing portion 2.1, the end of the locking portion 2.2 constitutes a locking protrusion 2.3, and the locking protrusion 1.1 is constituted on the locking protrusion 1.1.

[0041] When the unlocking lever 3 is in the locked state, the unlocking lever 3 is in the initial position. At this time, the locking protrusion 1.1 on the locking protrusion 2.3 is placed in the locking groove 1.2, thereby restricting the rotation of the rotating handle 2. When it is necessary to unlock, the pressing part 2.1 can be pressed downward to make the unlocking lever 3 enter the unlocking state. At this time, the pressing part 2.1 drives the locking part 2.2 to descend, so that the locking protrusion 1.1 on the locking protrusion 2.3 is disengaged from the locking groove 1.2, so that the rotating handle 2 can be rotated.

[0042] Furthermore, a return spring 2.4 is sleeved on the pressing part 2.1, and a limit platform 2.5 is formed in the rotating handle 2 to limit the upward movement of the locking part 2.2. The locking part 2.2 is passed through the limit platform 2.5 and connected to the pressing part 2.1. One end of the return spring 2.4 abuts the limit platform 2.5, and the other end abuts the pressing part 2.1, so that the pressing part 2.1 always has an upward movement trend.

[0043] Among them, the reset spring 2.4 will act on the pressing part 2.1, so that the entire unlocking rod 3 always has an upward movement trend. When the pressing part 2.1 is released from the pressure of the hand, it will automatically rise and reset, realizing the automatic reset of the unlocking rod 3, and the limit platform 2.5 can limit the locking part 2.2 to prevent the unlocking rod 3 from being separated from the rotating handle 2.

[0044] In addition, a limiting protrusion 4.6 is formed in the rotating handle 2, and a stop channel 4.7 for the locking protrusion 2.3 to slide is formed between the limiting protrusions 4.6. The limiting protrusion 4.6 can slide up and down in the stop channel 4.7, ensuring the stability of the entire unlocking rod 3 during the up and down sliding process, and the stop channel 4.7 limits the rotation of the limiting protrusion 4.6, so that the rotating handle 2 rotates synchronously with the unlocking rod 3, so that the rotating handle 2 has a locked state and an unlocked state.

[0045] Preferably, the outer periphery of the locking portion 2.2 is formed with a plurality of abutting protrusions 5.1, and the pressing portion 2.1 is formed with a connecting groove 5.2 for inserting the locking portion 2.2, and the abutting protrusions 5.1 abut against the groove wall of the connecting groove 5.2, thereby improving the reliability of the connection between the locking portion 2.2 and the pressing portion 2.1.

[0046] Preferably, the locking protrusion 2.3 is set in a regular polygon, such as a regular pentagon or a regular hexagon, so that the locking protrusion 1.1 on the locking protrusion 2.3 is set in a non-circular arc shape, which improves the strength of the locking protrusion 2.3 when it is engaged with the locking ring 4, and prevents the rotating handle 2 from being forced to rotate.

[0047] like Figures 2 to 4 As shown, in some other embodiments, a damping spring 2.6 is provided on the locking ring 4, and the damping spring 2.6 abuts against the bottom of the unlocking rod 3. The damping spring 2.6 abuts against the bottom of the unlocking rod 3, thereby increasing the force required to press down the unlocking rod 3. When it is necessary to press the part 2.1 downward to unlock, a greater force is required, thereby further reducing the chance of unlocking due to accidental pressing by children.

[0048] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 9 、 Figure 10 As shown, a further explanation of the implementation method of the damping ring 5 in this embodiment is provided, wherein a snap-fitting protrusion 3.1 is formed on the rotating handle 2, and a snap-fitting groove 3.2 for the snap-fitting protrusion 3.1 to be placed is formed on the damping ring 5. The snap-fitting protrusion 3.1 cooperates with the snap-fitting groove 3.2 to achieve a preliminary connection between the damping ring 5 and the rotating handle.

[0049] Preferably, the engaging protrusions 3.1 are provided on both sides of the damping ring 5, and the damping ring 5 engages with the engaging protrusions 3.1 on both sides simultaneously, thereby further improving the damping effect.

[0050] Preferably, the number of the engaging grooves 3.2 is greater than the locking grooves 1.2, and the locking grooves 1.2 coincide with the engaging grooves 3.2 along the axial direction of the unlocking rod 3, so that when the locking grooves 1.2 are engaged with the locking protrusions 1.1, the engaging grooves 3.2 and the engaging protrusions 3.1 are in an engaged state.

[0051] like Figure 11 、 Figure 12 As shown, in addition, a reinforcing metal ring 3.3 is provided at the end of the damping ring 5, and the rotating handle 2 and the damping ring 5 are riveted together. The rotating handle 2 and the damping ring 5 are connected to form a whole by riveting, thereby increasing the connection strength and the structural strength of the damping ring 5.

[0052] In other embodiments, the reinforcing metal ring 3 . 3 may also be riveted to the damping ring 5 to improve the structural strength of the damping ring 5 .

[0053] Preferably, the reinforcing metal ring 3.3 may also be covered on the transmission surface of the damping ring 5 and the rotating handle 2 to ensure the transmission strength.

[0054] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 As shown, further explanation of the installation of the locking ring 4 in this embodiment is provided, wherein a plug-in protrusion 4.1 is formed at the bottom of the locking ring 4, and a plug-in groove 4.2 for the plug-in protrusion 4.1 to be placed is formed on the mounting seat 1, thereby improving the reliability of the installation of the locking ring 4 and preventing the locking ring 4 from rotating.

[0055] In addition, a positioning ring 4.3 is provided on the mounting seat 1, and a plurality of anti-rotation protrusions 4.4 are formed on the outer periphery of the positioning ring 4.3, and an anti-rotation groove 4.5 for the anti-rotation protrusions 4.4 to be placed is formed on the locking ring 4, which further improves the reliability of the installation of the locking ring 4.3.

[0056] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A handle lock that prevents accidental opening, characterized in that: It comprises a mounting seat (1), a rotating handle (2) rotated on the mounting seat (1), and a square rod (6) inserted into the rotating handle (2); A locking ring (4) is provided on the mounting seat (1), and a plurality of locking grooves (1.2) are arranged at intervals on the outer circumference of the locking ring (4). An unlocking rod (3) is slidably provided in the rotating handle (2), and a locking protrusion (1.1) arranged in a non-circular arc shape is formed on the unlocking rod (3). The rotating handle (2) includes a locked state and an unlocked state. When the rotating handle (2) is in the locked state, the locking protrusion (1.1) is placed in the locking groove (1.2) to limit the rotation of the rotating handle (2). When the rotating handle (2) is in the unlocked state, the locking protrusion (1.1) moves downward and disengages from the locking groove (1.2). A damping ring (5) is provided at the bottom of the mounting seat (1), the damping ring (5) being engaged with the rotating handle (2), a damping convex portion (1.3) being formed on the mounting seat (1), and a plurality of damping grooves (1.4) for the damping convex portions (1.3) to be placed are arranged at intervals on the outer periphery of the damping ring (5).

2. The handle lock for preventing accidental opening according to claim 1, characterized in that: The unlocking lever (3) comprises a pressing portion (2.1) and a locking portion (2.2), wherein the locking portion (2.2) is plugged into the pressing portion (2.1), an end portion of the locking portion (2.2) forms a locking protrusion (2.3), and the locking protrusion (1.1) is formed on the locking protrusion (1.1).

3. The handle lock for preventing accidental opening according to claim 2, characterized in that: A return spring (2.4) is sleeved on the pressing portion (2.1); a limit platform (2.5) for limiting the upward movement of the locking portion (2.2) is formed in the rotating handle (2); the locking portion (2.2) is passed through the limit platform (2.5) and connected to the pressing portion (2.1); one end of the return spring (2.4) abuts against the limit platform (2.5) and the other end abuts against the pressing portion (2.1), so that the pressing portion (2.1) always has an upward movement trend.

4. The handle lock for preventing accidental opening according to claim 1, characterized in that: A damping spring (2.6) is sleeved on the locking ring (4), and the damping spring (2.6) abuts against the bottom of the unlocking rod (3).

5. The handle lock for preventing accidental opening according to claim 1, characterized in that: A clamping protrusion (3.1) is formed on the rotating handle (2), a clamping groove (3.2) for the clamping protrusion (3.1) to be placed is formed on the damping ring (5), and a reinforcing metal ring (3.3) is provided at the end of the damping ring (5). The rotating handle (2) and the damping ring (5) are riveted, or the reinforcing metal ring (3.3) and the damping ring (5) are riveted.

6. The handle lock for preventing accidental opening according to claim 1, characterized in that: A plug-in protrusion (4.1) is formed at the bottom of the locking ring (4), and a plug-in groove (4.2) for the plug-in protrusion (4.1) to be inserted is formed on the mounting seat (1).

7. The handle lock for preventing accidental opening according to claim 1, characterized in that: A positioning ring (4.3) is provided on the mounting seat (1), a plurality of anti-rotation protrusions (4.4) are formed on the outer periphery of the positioning ring (4.3), and an anti-rotation groove (4.5) for the anti-rotation protrusions (4.4) to be placed is formed on the locking ring (4).

8. The handle lock for preventing accidental opening according to claim 1, characterized in that: A limiting convex portion (4.6) is formed in the rotating handle (2), and a rotation-stopping channel (4.7) for the locking convex block (2.3) to slide is formed between the limiting convex portions (4.6).

9. The handle lock for preventing accidental opening according to claim 2, characterized in that: The locking protrusion (2.3) is arranged in the shape of a regular polygon.

10. The handle lock for preventing accidental opening according to claim 2, characterized in that: The outer periphery of the locking portion (2.2) is formed with a plurality of abutting protrusions (5.1), the pressing portion (2.1) is formed with a connecting groove (5.2) for the locking portion (2.2) to be inserted, and the abutting protrusions (5.1) abut against the groove wall of the connecting groove (5.2).

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