Lock cylinder structure and inward opening inwardly tilting window

Abstract

This invention relates to the field of doors and windows, and discloses a lock cylinder structure and an inward-opening, tilt-and-turn window. The lock cylinder structure includes a base, a handle, a first gear, a first rack, a locking assembly, and a button. The first gear is mounted on the base and is rotatably connected to the base. The handle is mounted on the first gear. The first rack is mounted on the base and is slidably connected to the base. The first rack and the first gear mesh with each other, allowing relative sliding between the rack and the base. The locking assembly is mounted on the base and is used to lock or release the first gear. The button is mounted on the locking assembly and is used to abut against the window frame, causing the locking assembly to lock the first gear. This invention also provides an inward-opening, tilt-and-turn window, which includes the aforementioned lock cylinder structure. This invention provides a lock cylinder structure and an inward-opening, tilt-and-turn window to effectively prevent the window from falling off due to accidental operation of the handle when the window is not fully closed.

Description

Technical Field

[0001] This invention relates to the field of doors and windows, and more particularly to a lock cylinder structure and an inward-opening and tilt-and-turn window. Background Technology

[0002] Inward-opening and tilt-and-turn windows, also known in the industry as inward-opening casement windows, require the window to be completely closed before switching from an inward-opening to a tilt-and-turn window, or vice versa, using current technology. The operator then needs to rotate the handle to turn the lock cylinder, thereby adjusting the opening and closing of the lock seat and locking points.

[0003] For example, Chinese Patent Publication No. CN108678616A discloses an inward-opening and inward-tilting window structure, which includes a handle, a window frame, and a sash window. It also includes a first transmission rod, a diagonal rod, a locking point, a locking seat, a conversion angle, and a second transmission rod. The handle and the first transmission rod are connected by a transmission mechanism, and the handle is connected to the locking point through the first transmission rod. The handle can be rotated twice. The first rotation of the handle causes the locking point and the locking seat to separate through the first transmission rod, forming an inward-opening window. The second rotation of the handle causes the first transmission rod to be pulled upward. The raised first transmission rod triggers the second transmission rod to push through the conversion angle, causing the diagonal rod to unfold, forming an inward-tilting window.

[0004] However, taking the switching from the inward-opening to the inward-tilting position as an example, if the operator is in a hurry and turns the handle before the window is fully closed, the window can easily fall out of the lock, making it impossible to close and possibly requiring repair. Figure 1 The image shows a window that has fallen out of the lock. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a lock cylinder structure and an inward-opening and inward-tilting window to effectively prevent the window from falling off due to accidental operation of the handle when the window is not fully closed.

[0006] The solution to the technical problem of this invention is:

[0007] A lock cylinder structure includes a base, a handle, a first gear, a first rack, a locking assembly, and a button. The first gear is mounted on the base and is rotatably connected to the base. The handle is mounted on the first gear. The first rack is mounted on the base and is slidably connected to the base. The first rack and the first gear mesh with each other, allowing the rack and the base to slide relative to each other. The locking assembly is mounted on the base and is used to lock or release the first gear. The button is mounted on the locking assembly and is used to abut against a window frame, causing the locking assembly to lock the first gear.

[0008] The beneficial effects of this invention are as follows: The lock cylinder structure, by incorporating a locking component linked to the window frame, ensures that the window must be fully closed and the button pressed before the handle can be rotated to switch between open and closed states. This structure physically locks the handle's rotation when the window is not fully closed, effectively preventing the window from falling off due to accidental handle operation when the window is not tightly closed, thus improving the safety and reliability of inward-opening and tilt-and-turn windows. Furthermore, the window's opening state switching operation requires the window to be fully closed. When the window is not fully closed, the locking component locks the first gear, preventing the handle from rotating and thus preventing the first rack from sliding to switch window states, fundamentally avoiding the risk of accidental operation.

[0009] As a further improvement to the above technical solution, the locking assembly includes a pin, a guide rail, a mounting bracket, and a first spring. The mounting bracket is mounted on the base, the guide rail is fixed on the mounting bracket, and the pin is mounted on the guide rail. The pin and the guide rail are slidably connected. One end of the first spring is connected to the mounting bracket or the guide rail, and the other end of the first spring is connected to the pin. The first gear has a locking hole, and the pin is inserted into the locking hole. The button extends beyond the base and is kinetically connected to the pin to drive the pin out of the locking hole. In its natural state, the first spring pushes the pin into the locking hole, locking the first gear. When the window is fully closed and the button is pressed, the button drives the pin to overcome the force of the first spring and exit the locking hole, thereby releasing the first gear. The structural principle is straightforward, and the locking is reliable.

[0010] As a further improvement to the above technical solution, the button includes a pressing block, a second rack, a second gear, a third gear, a third rack, and a connecting shaft. The connecting shaft is mounted on the mounting bracket. The second gear and the third gear are both mounted on the connecting shaft and are coaxially driven. The second gear and the third gear are rotatable relative to the connecting shaft. The pressing block and the second rack are fixedly connected, and the pressing block and the base are slidably connected. The pressing block extends beyond the base. The third rack is fixed to the pin and meshes with the third gear. The second gear meshes with the second rack. This rack and pinion transmission structure can convert the linear pressing action of the window frame on the pressing block into a linear action that drives the pin to slide through the transmission of the second rack, the second gear, the connecting shaft, the third gear, and the third rack. This design adapts to the limited installation space on the window and can stably and reliably realize the conversion of movement direction and the transmission of force.

[0011] As a further improvement to the above technical solution, a first guide hole is provided on the base, and the pressing block and the inner wall of the first guide hole are slidably connected. The first guide hole on the base is slidably connected to the pressing block, which guides and limits the linear movement of the pressing block, ensuring the stability and linearity of the pressing action.

[0012] As a further improvement to the above technical solution, the ends of the pressing block facing away from the first spring have rounded corners on both sides, which are used to abut against the window frame. The rounded corner design makes the contact between the window frame and the pressing block smoother during the closing process, which helps guide the window frame to press the pressing block in smoothly, and also reduces wear on the contact parts of the window frame or the pressing block.

[0013] As a further improvement to the above technical solution, the first rack is provided with a groove extending along its length, and a fixing block extends from the base. The fixing block is inserted into the groove, and the fixing block and the groove can slide relative to each other. The sliding engagement between the groove on the first rack and the fixing block extending from the base restricts the first rack to move only in a straight line along its length, preventing the first rack from shifting or falling off during transmission and ensuring the stability of the transmission.

[0014] As a further improvement to the above technical solution, the handle includes a grip and a square shaft. A square hole is formed in the middle of one end face of the first gear. The square shaft and the square hole are coaxially connected for transmission, and the grip is fixed on the square shaft. This structure is simple, and when the user rotates the grip, the torque is directly and reliably transmitted to the first gear through the square shaft.

[0015] As a further improvement to the above technical solution, the handle also includes a second spring, a locking block, a connecting seat fixed on the base, a ring fixed on the connecting seat, and a turntable mounted on the square shaft. The turntable and the square shaft are coaxially connected. The inner circumferential wall of the ring has multiple toothed blocks, with grooves formed between adjacent toothed blocks. The turntable has a second guide hole along its radial direction. The locking block is located in the second guide hole and can slide relative to it. The second spring is located between the bottom surface of the second guide hole and the locking block, with its two ends connected to the locking block and the bottom surface of the second guide hole, respectively. The locking block is inserted into the groove. When the square shaft and the turntable rotate coaxially, the locking block compresses the second spring to disengage from the groove. When the handle is rotated, the locking block engages or disengages from the groove on the ring under the action of the second spring, providing a clear sense of the grip position and operational feedback, and preventing the handle from rotating arbitrarily in non-operating positions.

[0016] As a further improvement to the above technical solution, among all the toothed blocks on the inner circumferential wall of the annulus, at least two adjacent toothed blocks have an extension portion extending away from their tooth root on the tooth tip, and a first space is provided between two adjacent extension portions. The locking block can pass through the first space and be inserted into the corresponding groove. This design, by setting a wider first space, allows the locking block to pass smoothly through and lock into a specific groove, achieving precise positioning of different window states such as "opening inward" and "tilting inward".

[0017] The present invention also provides an inward-opening and tilt-and-turn window, which includes the lock cylinder structure described in any of the above-mentioned technical solutions. This inward-opening and tilt-and-turn window has an anti-misoperation function. When the window sash is fully closed relative to the window frame, pressing the button on the inner wall of the window frame releases the first gear of the locking component, at which point the handle can be turned to switch the window state, thus improving the safety and reliability of window use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating a malfunction in an inward-opening and tilt-and-turn window in the existing technology.

[0019] Figure 2 This is an exploded view of a lock cylinder structure according to one embodiment of the present invention.

[0020] Figure 3 This is the invention Figure 2 A magnified view of point G in the image.

[0021] Figure 4 This is an isometric view of a lock cylinder structure according to one embodiment of the present invention.

[0022] Figure 5 This is the invention Figure 4 A magnified view of point H in the image.

[0023] Figure 6 This is a cross-sectional view taken along the central axis of the square axis in one embodiment of the present invention.

[0024] Figure 7 This is the invention Figure 6 Enlarged view of point J in the image.

[0025] Figure 8 This is a schematic diagram of the structure of the first gear, square shaft, second guide hole, second spring, ring and tooth block of the present invention.

[0026] Figure 9 This is a schematic diagram of an inward-opening and tilt-and-turn window installed on fixed glass.

[0027] Reference numerals in the attached drawings: 1-First gear, 11-Locking hole, 2-First rack, 21-Slide groove, 3-Locking assembly, 31-Pin, 32-Guide rail, 33-Mounting bracket, 34-First spring, 4-Button, 41-Pressing block, 411-Rounded corner, 412-Second rack, 413-Second gear, 414-Third gear, 415-Third rack, 416-Connecting shaft, 5-Base, 51-First guide hole, 52-Fixing block, 61-Square shaft, 62-Second spring, 63-Clocking block, 64-Connecting seat, 65-Ring, 651-Gear block, 652-Extension, 653-Groove, 66-Turntable, 661-Second guide hole, 8-Fixing glass, 9-Inward opening and tilting window. Detailed Implementation

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments have been briefly explained above. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0029] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connection relationships mentioned herein do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0030] This embodiment provides a lock cylinder structure designed to solve the problem of inward-opening and tilt-and-turn windows potentially falling off due to accidental handle operation when the window is not fully closed. This lock cylinder structure, by incorporating a locking component 3 linked to the window frame, ensures that the window must be fully closed and button 4 pressed before the handle can be turned to switch between open and closed states, thus effectively preventing accidental operation. In particular, as... Figure 9 The diagram shows an inward-opening and tilt-and-turn window 9 installed on fixed glass 8. Its maintenance requires extreme care to avoid damaging the fixed glass. Therefore, it is best to avoid damaging the inward-opening and tilt-and-turn window 9 altogether.

[0031] like Figures 2 to 8As shown, a lock cylinder structure includes a base 5, a handle, a first gear 1, a first rack 2, a locking assembly 3, and a button 4. The first gear 1 is mounted on the base 5, and the first gear 1 and the base 5 are rotatably connected relative to each other. The handle is mounted on the first gear 1. The first rack 2 is mounted on the base 5, and the first rack 2 and the base 5 are slidably connected relative to each other. The first rack 2 and the first gear 1 mesh with each other, allowing the first rack 2 and the base 5 to slide relative to each other. The locking assembly 3 is mounted on the base 5 and is used to lock or release the first gear 1. The button 4 is mounted on the locking assembly 3 and is used to abut against a window frame, causing the locking assembly 3 to lock the first gear 1.

[0032] In this embodiment, the lock cylinder structure includes a base 5, a handle, a first gear 1, a first rack 2, a locking assembly 3, and a button 4. The first gear 1 is rotatably mounted on the base 5. The handle is fixedly mounted on the first gear 1 for user operation. The first rack 2 is slidably mounted on the base 5 and meshes with the first gear 1. When the handle is rotated, causing the first gear 1 to rotate, the first gear 1 drives the first rack 2 to slide along its length. The end of the first rack 2 is used to connect to the window's transmission rod, such as the first transmission rod described in the background art of this invention. The transmission rod is driven to move by the sliding of the first rack 2, thereby controlling the engagement or disengagement of the window lock point and the lock seat, realizing the locking or opening of the window. The locking assembly 3 is mounted on the base 5 and is used to selectively lock or release the first gear 1, preventing it from rotating or allowing it to rotate freely. The button 4 is mounted on the locking assembly 3 and extends partially to the outside of the base 5. It is designed to abut against the inner surface of the window frame when the window is fully closed.

[0033] When the window is open or tilted inwards and not fully closed to the window frame, button 4 is not pressed. The locking assembly 3, under its own elastic force, is locked, locking the first gear 1. At this time, the handle cannot be turned, thus preventing the switching between open and tilted window states. When the window is fully closed, the inner surface of the window frame presses against button 4, causing button 4 to move inwards towards the base 5. The movement of button 4 triggers the locking assembly 3, switching it from the locked position to the released position, releasing the lock on the first gear 1. At this point, the operator can normally turn the handle, driving the transmission mechanism through the first gear 1 and the first rack 2 to switch the window between the inward-open and tilted-in states. This design ensures that the window state switching operation is only possible when the window is fully closed, fundamentally avoiding the risk of the window falling due to operating the handle before the window is closed.

[0034] like Figure 2 , Figure 3 , Figure 6 , Figure 7As shown, in one embodiment, the locking assembly 3 includes a pin 31, a guide rail 32, a mounting bracket 33, and a first spring 34. The mounting bracket 33 is disposed on the base 5, the guide rail 32 is fixed on the mounting bracket 33, the pin 31 is disposed on the guide rail 32, and the pin 31 and the guide rail 32 are slidably connected relative to each other. One end of the first spring 34 is connected to the mounting bracket 33 or the guide rail 32, and the other end of the first spring 34 is connected to the pin 31. The first gear 1 is provided with a locking hole 11, and the pin 31 is inserted into the locking hole 11. The button 4 extends beyond the base 5, and the button 4 is kinetically connected to the pin 31 to drive the pin 31 out of the locking hole 11.

[0035] In this embodiment, the mounting bracket 33 is fixed to the base 5. The guide rail 32 is fixed to the mounting bracket 33. The pin 31 is slidably disposed on the guide rail 32, and its sliding direction is approximately radial along the first gear 1. A locking hole 11 is provided at the bottom of at least one tooth groove of the first gear 1. In the natural state (i.e., when the button 4 is not pressed), one end of the first spring 34 is connected to the mounting bracket 33 or the guide rail 32, and the other end is connected to the pin 31. The elastic force of the first spring 34 pushes the pin 31, causing its end to insert into the locking hole 11 of the tooth groove of the first gear 1. At this time, the end of the pin 31 is located in the locking hole 11 of the tooth groove, forming mechanical interference with the rotation of the gear, thereby locking the first gear 1. When the button 4 is pressed by the window frame, the button 4 will drive the pin 31 to slide along the guide rail 32 against the elastic force of the first spring 34, causing its end to exit from the locking hole 11 of the tooth groove, and the first gear 1 is released and can rotate freely. This structure utilizes the engagement of pin 31 with the tooth groove to achieve locking, which is straightforward and highly reliable.

[0036] like Figures 2 to 7As shown, in one embodiment, the button 4 includes a pressing block 41, a second rack 412, a second gear 413, a third gear 414, a third rack 415, and a connecting shaft 416. The connecting shaft 416 is mounted on the mounting bracket 33. The second gear 413 and the third gear 414 are both mounted on the connecting shaft 416 and are coaxially driven. The second gear 413 and the third gear 414 are rotatable relative to the connecting shaft 416. The pressing block 41 and the second rack 412 are fixedly connected, and the pressing block 41 and the base 5 are slidably connected. The pressing block 41 extends beyond the base 5. The third rack 415 is fixed to the latch 31 and meshes with the third gear 414. The second gear 413 meshes with the second rack 412. This allows for the effective transmission of external pressing action to the latch 31 and adapts to the limited installation space on the window. Therefore, button 4 can adopt a gear and rack transmission structure.

[0037] In this embodiment, the connecting shaft 416 is rotatably supported on or fixed to the mounting bracket 33. When the connecting shaft 416 and the mounting bracket 33 are fixedly connected, the second gear 413 and the third gear 414 are coaxially sleeved on the connecting shaft 416, and can rotate independently relative to the connecting shaft 416. When the connecting shaft 416 is rotatably mounted on the mounting bracket 33, the second gear 413 and the third gear 414 are connected to the connecting shaft 416 by a flat key or other means to achieve coaxial transmission and ensure that they rotate synchronously. The pressing block 41 is disposed outside the base 5 and is fixedly connected to the second rack 412. The pressing block 41 is slidably disposed on the base 5, and its sliding direction is consistent with the pressing direction of the window frame. The third rack 415 is fixedly connected to the pin 31. The second rack 412 meshes with the second gear 413, and the third rack 415 meshes with the third gear 414. When the window is closed and the window frame presses against the pressing block 41, the pressing block 41 drives the second rack 412 to move linearly. The second rack 412 drives the second gear 413 to rotate, and the second gear 413 drives the third gear 414 to rotate synchronously through the connecting shaft 416. The third gear 414 then drives the third rack 415 to move linearly. The third rack 415 drives the pin 31 fixed to it to slide, realizing the withdrawal of the pin 31 from the locking hole 11. This gear and rack transmission method can stably and reliably convert the linear motion of the pressing block 41 into the linear motion of the pin 31, and the direction of motion transmission can be changed through the intermediate gear, which facilitates the layout and installation of the entire lock cylinder structure on the window sash.

[0038] like Figure 2 , Figure 3As shown, to ensure smooth sliding of the pressing block 41 without jamming, a first guide hole 51 is provided on the base 5. In one embodiment, the base 5 has a first guide hole 51, and the pressing block 41 and the inner wall of the first guide hole 51 are slidably connected relative to each other. The first guide hole 51 guides and limits the sliding of the pressing block 41, ensuring the linearity and stability of the pressing action.

[0039] The end face of the pressing block 41 facing away from the first spring 34 (i.e., the end face that abuts against the window frame) is its directly stressed part. In one embodiment, both sides of the end of the pressing block 41 facing away from the first spring 34 are rounded with corners 411, which are used to abut against the window frame. The rounded corners 411 make the contact between the window frame and the pressing block 41 smoother during the closing process, which helps guide the window frame to press the pressing block 41 in, and also reduces wear on the surface of the window frame or the pressing block 41 itself.

[0040] like Figures 2 to 5 As shown, to limit the movement trajectory of the first rack 2, ensure reliable meshing with the first gear 1, and prevent it from falling off the base 5, in one embodiment, the first rack 2 is provided with a groove 21 extending along its length direction. A fixing block 52 extends from the base 5 and is inserted into the groove 21. The fixing block 52 and the groove 21 can slide relative to each other. Through the cooperation of the groove 21 and the fixing block 52, the first rack 2 is constrained to slide only in a straight line along the length direction of the groove 21 (i.e., its own length direction) without deviation or tilting, thus ensuring stable transmission.

[0041] like Figures 2 to 4 As shown, in one embodiment, the handle includes a grip and a square shaft 61. A square hole is formed in the middle of one end face of the first gear 1. The square shaft 61 and the square hole are coaxially connected for transmission. The grip is fixed to the square shaft 61. One end of the square shaft 61 is inserted into the square hole, forming a coaxial transmission connection. The grip is fixedly installed on the other end of the square shaft 61. When the user rotates the grip, the torque is transmitted to the first gear 1 through the square shaft 61. The structure is simple, and the transmission is direct and reliable.

[0042] To provide a clear tactile feedback when the handle is turned and to prevent it from rotating arbitrarily in non-operating positions, in one embodiment, the handle further includes a second spring 62, a locking block 63, a connecting seat 64 fixed to the base 5, a ring 65 fixed to the connecting seat 64, and a turntable 66 mounted on the square shaft 61. The turntable 66 and the square shaft 61 are coaxially connected. The inner circumferential wall of the ring 65 is provided with multiple toothed blocks 651, and adjacent toothed blocks 651 form grooves 653. The turntable 66 is provided with a first toothed block 651 along its radial direction. Two guide holes 661 are provided, and the locking block 63 is disposed in the second guide hole 661. The locking block 63 and the second guide hole 661 can slide relative to each other. The second spring 62 is disposed between the bottom surface of the second guide hole 661 and the locking block 63. The two ends of the second spring 62 are respectively connected to the locking block 63 and the bottom surface of the second guide hole 661. The locking block 63 is inserted into the groove 653. When the square shaft 61 and the turntable 66 rotate coaxially, the locking block 63 compresses the second spring 62 to exit from the groove 653.

[0043] like Figures 2 to 4 , Figure 8 As shown, in this embodiment, the ring 65 is fixed on the connecting seat 64, and a plurality of inwardly protruding toothed blocks 651 are evenly distributed on its inner peripheral wall, with grooves 653 formed between adjacent toothed blocks 651. The turntable 66 is coaxially fixedly sleeved on the square shaft 61 and can rotate together with the square shaft 61. The turntable 66 is provided with a second guide hole 661 extending radially therefrom. The locking block 63 is disposed in the second guide hole 661 and can slide radially within the second guide hole 661. The second spring 62 is accommodated in the second guide hole 661, with one end connected to the bottom surface of the second guide hole 661 and the other end connected to the locking block 63. In its natural state, the elastic force of the second spring 62 pushes the locking block 63, causing it to partially extend out of the turntable 66 and engage with one of the grooves 653 of the ring 65. When the handle needs to be rotated, the applied torque causes the square shaft 61 and the turntable 66 to rotate. The locking block 63 on the turntable 66 is acted upon by the inclined surface of the sidewall of the groove 653, compressing the second spring 62 and retracting into the second guide hole 661, thereby sliding out of the current groove 653. When rotation continues until the locking block 63, under the action of the second spring 62, engages in the next groove 653, a clear "click" sound and tactile feedback are provided. This ratchet structure provides clear operational feedback.

[0044] like Figure 8 As shown, in one embodiment, among all the tooth blocks 651 on the inner peripheral wall of the ring 65, at least two adjacent tooth blocks 651 are provided with an extension portion 652 extending away from their tooth root on the tooth tip, and a first space is provided between two adjacent extension portions 652, and the locking block 63 can be inserted into the corresponding groove 653 through the first space.

[0045] In this embodiment, in order to enable the locking block 63 to accurately engage with the groove 653 corresponding to the "inward opening", "inward tilting" or "locked" state, among all the tooth blocks 651 on the inner peripheral wall of the ring 65, the tooth tips of two adjacent tooth blocks 651 are provided with an extension portion 652 extending away from the tooth root direction (i.e., approximately towards the center of the ring 65).

[0046] In a preferred embodiment, three sets of such structures can be evenly arranged along the circumference of the ring 65, each set including two adjacent toothed blocks 651 with extensions 652. The central angle between two adjacent sets is 90 degrees, and these three sets of structures correspond to the three working states of the window: "tilt in", "open in", and "locked".

[0047] The working process is as follows: When the window is in the "inward opening" state, the end of the locking block 63, under the action of the second spring 62, is locked in the deep groove formed by the corresponding first space and the corresponding adjacent groove 653. After the window is fully closed, press button 4 to unlock, and then turn the handle. The locking block 63 first disengages from the current deep groove and temporarily falls into a groove 653 (without an extension 652 on the toothed block 651) during the rotation. Continue to turn the handle, and when the locking block 63 rotates with the turntable to align with the first space corresponding to the next "locked" state, the locking block 63 obtains sufficient radial movement space under the action of the second spring 62, allowing its end to fully extend, pass through the first space, and finally lock into the corresponding groove. At this time, the window enters the "locked" state. If it is necessary to switch to the "tilt-in" state, continue to turn the handle in the same direction. The locking block will compress the second spring 62 and slide out of the current groove until it locks into the next deep groove preset for the "tilt-in" state.

[0048] This invention also provides an inward-opening and tilt-and-turn window, which includes the lock cylinder structure described in any of the above-mentioned technical solutions. The lock cylinder structure is installed on the window sash, and its first rack 2 is connected to the transmission rod mechanism inside the window sash. The button 4 faces the inside of the window frame. When the window sash is completely closed relative to the window frame, the inner wall of the window frame presses against the button 4, causing the locking component 3 inside the lock cylinder to release the first gear 1. At this time, turning the handle can switch the window opening mode. This inward-opening and tilt-and-turn window has an anti-misoperation function, improving the safety and reliability of use.

[0049] In summary, the core working principle of the lock cylinder structure and inward-opening / tilting window provided by this invention lies in the mechanical interlocking method that forcibly associates the operability of the handle (i.e., the rotatability of the first gear 1) with the fully closed state of the window (indicated by the button being pressed by the window frame). When the window is not fully closed, the locking component 3 automatically locks the drive gear under the action of the first spring, preventing the handle from turning, thereby physically preventing the user from switching the window state and effectively preventing the window from falling off due to accidental operation. The entire device has a reasonable structure, consists entirely of mechanical components, requires no electricity, has high reliability, long service life, and good practicality.

[0050] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A lock cylinder structure, comprising a base (5) and a handle, characterized in that, The lock cylinder structure also includes: a first gear (1), a first rack (2), a locking assembly (3), and a button (4). The first gear (1) is mounted on the base (5), and the first gear (1) and the base (5) are rotatably connected. The handle is mounted on the first gear (1). The first rack (2) is mounted on the base (5), and the first rack (2) and the base (5) are slidably connected. The first rack (2) and the first gear (1) mesh with each other, allowing the first rack (2) and the base (5) to slide relative to each other. The locking assembly (3) is mounted on the base (5) and is used to lock or release the handle. The first gear (1) is mounted on the locking assembly (3), and the button (4) is used to abut against the window frame so that the locking assembly (3) locks the first gear (1). The locking assembly (3) includes a pin (31), a guide rail (32), a mounting bracket (33), and a first spring (34). The mounting bracket (33) is mounted on the base (5), the guide rail (32) is fixed on the mounting bracket (33), the pin (31) is mounted on the guide rail (32), and the pin (31) and the guide rail (32) are slidably connected. One end of the first spring (34) is connected to the mounting bracket (33) or the guide rail (32). The other end of (34) is connected to the pin (31). The first gear (1) is provided with a locking hole (11). The pin (31) is inserted into the locking hole (11). The button (4) extends beyond the base (5). The button (4) and the pin (31) are connected in a transmission manner to drive the pin (31) out of the locking hole (11). The button (4) includes a pressing block (41), a second rack (412), a second gear (413), a third gear (414), a third rack (415), and a connecting shaft (416). The connecting shaft (416) is provided on the mounting bracket (33). The second gear (413) and the third gear (414) All of the components are mounted on the connecting shaft (416). The second gear (413) and the third gear (414) are coaxially driven. The second gear (413) and the third gear (414) can rotate relative to the connecting shaft (416). The pressing block (41) and the second rack (412) are fixedly connected. The pressing block (41) and the base (5) are slidably connected. The pressing block (41) extends beyond the base (5). The third rack (415) is fixed on the pin (31). The third rack (415) meshes with the third gear (414). The second gear (413) meshes with the second rack (412).

2. The lock cylinder structure according to claim 1, characterized in that, The base (5) has a first guide hole (51) and the pressing block (41) and the inner wall of the first guide hole (51) are slidably connected.

3. The lock cylinder structure according to claim 1, characterized in that, The pressing block (41) has rounded corners (411) on both sides of its end facing away from the first spring (34), and the rounded corners (411) are used to abut against the window frame.

4. The lock cylinder structure according to claim 1, characterized in that, The first rack (2) is provided with a groove (21) extending along its length direction, and a fixing block (52) extends from the base (5). The fixing block (52) is inserted into the groove (21), and the fixing block (52) and the groove (21) can slide relative to each other.

5. The lock cylinder structure according to claim 1, characterized in that, The handle includes a grip and a square shaft (61). A square hole is provided in the middle of one end face of the first gear (1). The square shaft (61) and the square hole are coaxially connected. The grip is fixed on the square shaft (61).

6. The lock cylinder structure according to claim 5, characterized in that, The handle also includes a second spring (62), a locking block (63), a connecting seat (64) fixed on the base (5), a ring (65) fixed on the connecting seat (64), and a turntable (66) provided on the square shaft (61). The turntable (66) and the square shaft (61) are coaxially connected. The inner circumferential wall of the ring (65) is provided with a plurality of toothed blocks (651), and a groove (653) is formed between adjacent toothed blocks (651). The turntable (66) is provided with a second guide hole (661) along the radial direction of the turntable (66). The locking block (63) is provided on the... In the second guide hole (661), the locking block (63) and the second guide hole (661) can slide relative to each other. The second spring (62) is provided between the bottom surface of the second guide hole (661) and the locking block (63). The two ends of the second spring (62) are respectively connected to the bottom surface of the locking block (63) and the second guide hole (661). The locking block (63) is inserted into the groove (653). When the square shaft (61) and the turntable (66) rotate coaxially, the locking block (63) compresses the second spring (62) to exit from the groove (653).

7. The lock cylinder structure according to claim 6, characterized in that, Among all the toothed blocks (651) on the inner peripheral wall of the ring (65), at least two adjacent toothed blocks (651) have an extension (652) on the tooth tip that extends away from the tooth root. A first space is provided between two adjacent extensions (652), and the card block (63) can be inserted into the corresponding groove (653) through the first space.

8. An inward-opening and tilt-and-turn window, characterized in that, Includes the lock cylinder structure as described in any one of claims 1 to 7.

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