A locking mechanism for preventing accidental opening of handle door and window lock

Abstract

The present invention relates to a locking mechanism for preventing mis-opening of a handle door and window lock, comprising a mounting seat, a rotating shaft being arranged in the mounting seat, one end of the rotating shaft being fixedly connected to the handle, a transmission square bar being fixedly inserted on the central axis of the rotating shaft, the handle driving the transmission square bar to rotate through the rotating shaft, an axially extending shaft sleeve being arranged in the middle of the mounting seat, the rotating shaft being rotatably inserted in the shaft sleeve, the shaft sleeve being coaxially divided into a fixed section and a rotating section, a plane cam being rotatably sleeved outside the rotating section, a locking sleeve being fixedly sleeved outside the fixed section, a through hole being axially arranged on the locking sleeve, a lock pin outer sleeve spring being movably inserted in the through hole, one end of the lock pin being formed into a circular lock cap, the circular lock cap being movably matched with the plane cam, and the other end of the lock pin being matched with a locking hole arranged at the end of the handle. When the plane cam rotates, one end of the lock pin can be inserted into the locking hole, the handle can no longer rotate, and the mis-opening operation by children can be effectively prevented, and the locking mechanism has the advantages of simple and compact structural design, convenient operation and use by adults, and high reliability.

Description

Technical Field

[0001] The invention relates to a locking mechanism for preventing mis-opening of a handle door and window lock. Background Art

[0002] The opening and closing operation of existing door and window locks is very convenient and easy, especially window locks. The convenient and easy opening and closing operation makes it easy for children to open, which increases many safety hazards. For this reason, some door and window locks designed to prevent children from opening by mistake have also appeared. They all add a mechanical lock core design in the lock body and use traditional keys to open. This design has a complex structure, which not only greatly increases the production cost of the product, but also requires the key to be kept specially. Obviously, the normal operation and use of adults also becomes cumbersome, and it is difficult to be recognized in the market. Summary of the invention

[0003] In order to overcome the problem that the common door and window locks with anti-misopening design in the prior art have complex structural design, which not only greatly increases the production cost of the product, but also makes the normal operation and use of adults cumbersome, the present invention provides a handle door and window lock anti-misopening locking mechanism, which has a simple and compact structural design, is easy for adults to operate and use, and has strong reliability.

[0004] The technical solution adopted by the present invention to solve its technical problems is: it includes a mounting seat, a rotating shaft is provided in the mounting seat, one end of the rotating shaft is fixedly connected to the handle, and a transmission square bar is fixedly inserted on the central axis of the rotating shaft, and the handle drives the transmission square bar to rotate through the rotating shaft, and an axially extending shaft sleeve is provided in the middle of the mounting seat, the rotating shaft can be rotatably inserted in the shaft sleeve, and the shaft sleeve is coaxially divided into a fixed section and a rotating section front and back, a flat cam is rotatably sleeved on the outside of the rotating section, and a locking sleeve is fixedly sleeved on the outside of the fixed section, and an axial through hole is provided on the locking sleeve, and a locking pin outer sleeve spring is movably inserted in the through hole, one end of the locking pin is formed as a circular locking cap, and the circular locking cap is movably matched with the flat cam, and the other end of the locking pin is matched with the locking hole provided in the end of the handle.

[0005] A mounting hole is arranged on the mounting seat, a shielding cover is arranged on the rotating section relative to the mounting hole, and a pressing spring is arranged between the shielding cover and the plane cam to position the shielding cover.

[0006] A groove is arranged on one side of the plane cam relative to the shielding cover, and the pressing spring is sleeved outside the rotating section in the groove.

[0007] A long hole is provided on the central axis of the rotating shaft for fixing and plugging the transmission square bar. The end of the rotating shaft protruding from the shaft sleeve is fixedly plugged with the handle and is fixedly connected to the handle through the connecting screw in the long hole. The handle drives the transmission square bar to rotate through the rotating shaft.

[0008] Through the above-mentioned specific design, the present invention can rotate the plane cam to insert one end of the lock pin into the locking hole of the handle. The handle is connected to the locking sleeve through the lock pin, and the handle can no longer rotate, which can effectively prevent children from accidentally opening the handle. It has the advantages of simple and compact structural design, easy operation and use by adults, and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 It is a schematic diagram of the structure of the present invention in an unlocked state.

[0011] Figure 2 It is a structural schematic diagram of the present invention in a locked state.

[0012] In the figure: 1, mounting seat, 2, rotating shaft, 3, handle, 4, transmission square bar, 5, bushing, 5A, fixed section, 5B, rotating section, 6, flat cam, 7, locking sleeve, 8, through hole, 9, locking pin, 9a, round locking cap, 10, spring, 11, locking hole, 12, mounting hole, 13 protective cover, 14, top pressure spring, 15, groove, 16, long hole, 17, connecting screw. DETAILED DESCRIPTION

[0013] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0014] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0015] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0016] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] As shown in the figure, the present invention includes a mounting base 1, in which a rotating shaft 2 is provided, one end of the rotating shaft 2 is fixedly connected to a handle 3, a transmission square bar 4 is fixedly inserted on the central axis of the rotating shaft 2, and the handle 3 drives the transmission square bar 4 to rotate through the rotating shaft 2. An axially extending shaft sleeve 5 is provided in the middle of the mounting base 1, and the rotating shaft 2 is rotatably inserted in the shaft sleeve 5. The shaft sleeve 5 is coaxially divided into a fixed section 5A and a rotating section 5B front and back. The rotating section 5B is rotatably sleeved with a plane cam 6 outside, and the fixed section 5A is fixedly sleeved with a locking sleeve 7 outside. An axial through hole 8 is provided on the locking sleeve 7, and a spring 10 is movably inserted in the through hole 8. One end of the locking pin 9 is formed as a circular lock cap 9a, and the circular lock cap 9a is movably matched with the plane cam 6, and the other end of the locking pin 9 is matched with a locking hole 11 provided at the end of the handle 3. The mounting seat 1 is provided with a mounting hole 12, and the mounting hole 12 is used to install and fix the lock body on the profile by means of mounting screws. The rotating section 5B is covered with a shielding cover 13 relative to the mounting hole 12, and a pressing spring 14 is provided between the shielding cover 13 and the plane cam 6 to position the shielding cover 13. The rotating shielding cover 13 can expose the mounting hole 12 for easy installation. After the installation is completed, the rotating shielding cover 13 covers the mounting hole 12 to make the surface more concise. The pressing spring 14 presses the shielding cover 13, and the shielding cover 13 will not loosen. A groove 15 is provided on one side of the plane cam 6 relative to the shielding cover 13, and the pressing spring 14 is sleeved on the outside of the rotating section 5B in the groove 15. The pressing spring 14 is protected in the groove 15, which prolongs the service life of the pressing spring 14 and improves reliability. A long hole 16 is provided on the central axis of the rotating shaft 2 for fixing and plugging the transmission square bar 4. The end of the rotating shaft 2 protruding from the sleeve 5 is fixedly plugged with the handle 3 and is fixedly connected to the handle 3 through a connecting screw 17 in the long hole 16. The handle 3 drives the transmission square bar 4 to rotate through the rotating shaft 2.

[0018] After the window sash is closed and locked, if it is necessary to prevent children from opening the window by mistake, the operator can further rotate the plane cam 6, and the plane cam 6 pushes the lock pin 9 linearly through the counteracting circular lock cap 9a, the spring 10 is compressed, and the outer end of the lock pin 9 is inserted into the lock hole 11 opened at the end of the handle 3, that is, the handle 3 is connected to the lock sleeve 7 through the lock pin 9. Since the locking sleeve 7 and the fixed section 5A of the shaft sleeve 5 are fixedly matched, that is, the locking sleeve 7 cannot rotate in the fixed section 5A, then the handle 3 cannot rotate, that is, it is locked, which can prevent accidental opening. Continue to rotate the plane cam 6 or in the opposite direction, the lock pin 9 is separated from the lock hole 11 on the handle 3 under the action of the spring 10, the handle 3 is unlocked, and the handle 3 can be rotated to unlock.

[0019] The above-described embodiments are merely descriptions of preferred implementations of a handle door and window lock anti-misopening locking mechanism of the present invention, and are not intended to limit the concept and scope of the invention. Without departing from the scheme of the present invention, various external modifications and improvements made by technicians in this field to the technical scheme of the present invention should all fall within the protection scope of the handle door and window lock anti-misopening locking mechanism of the present invention.

Claims

1. A locking mechanism for preventing accidental opening of a handle door and window lock, comprising a mounting seat, a rotating shaft is arranged in the mounting seat, one end of the rotating shaft is fixedly connected to the handle, a transmission square bar is fixedly inserted on the central axis of the rotating shaft, and the handle drives the transmission square bar to rotate through the rotating shaft, wherein: An axially extending shaft sleeve (5) is provided in the middle of the mounting seat (1), the rotating shaft (2) is rotatably inserted in the shaft sleeve (5), the shaft sleeve (5) is coaxially divided into a fixed section (5A) and a rotating section (5B) front and rear, the rotating section (5B) is rotatably sleeved on the outside of the flat cam (6), the fixed section (5A) is fixedly sleeved on the outside of the locking sleeve (7), a through hole (8) is axially provided on the locking sleeve (7), a locking pin (9) and an outer sleeve spring (10) are movably inserted in the through hole (8), one end of the locking pin (9) is formed into a circular locking cap (9a), the circular locking cap (9a) is movably matched with the flat cam (6), and the other end of the locking pin (9) is matched with a locking hole (11) provided at the end of the handle (3).

2. The anti-misopening locking mechanism for handle door and window lock according to claim 1 is characterized in that The mounting seat (1) is provided with a mounting hole (12); the rotating section (5B) is provided with a protective cover (13) relative to the mounting hole (12); and a pressing spring (14) is provided between the protective cover (13) and the plane cam (6) to position the protective cover (13).

3. The anti-misopening locking mechanism of the handle door and window lock according to claim 2 is characterized in that A groove (15) is provided on one side of the planar cam (6) relative to the shielding cover (13), and the pressure spring (14) is sleeved in the groove (15) outside the rotating section (5B).

4. A handle door and window lock anti-misopening locking mechanism according to claim 1, 2 or 3, characterized in that A long hole (16) is provided on the central axis of the rotating shaft (2) for fixedly inserting the transmission square bar (4). The end of the rotating shaft (2) protruding from the shaft sleeve (5) is fixedly inserted with the handle (3) and is fixedly connected to the handle (3) via a connecting screw (17) in the long hole (16). The handle (3) drives the transmission square bar (4) to rotate via the rotating shaft (2).

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