A locking mechanism for a diagonal tie rod in an outward-opening, top-hung hardware system.

Abstract

A locking mechanism for a diagonal tie rod in an outward-opening, top-hung hardware system is disclosed. The diagonal tie rod includes a movable tie rod slidably mounted on a base for positioning a first connecting rod. The base has a first connecting rod with a limiting groove at one end near the base. The positioning device includes a limiting block with a locking part. When the window sash needs to be opened to its maximum position, the locking part extends out of the base and engages with the limiting groove to form a limiting connection, thus locking the window sash. The movable tie rod has an unlocking part. When the window sash needs to be closed, the locking part slides within the base driven by the handle. The unlocking part abuts against the limiting block, creating a lever effect that disengages the locking part from the limiting groove, thereby releasing the locked state of the window sash.

Description

Technical Field

[0001] This utility model relates to a locking mechanism for a diagonal tie rod in an outward-opening top-hung hardware system, belonging to the field of window sashes. Background Technology

[0002] Outward-opening top-hung windows are a new type of window opening mechanism. They combine the functions of outward-opening and top-hung windows by operating a handle, allowing for both casement and top-hung opening. When top-hung, a diagonal brace is needed to support the window sash and prevent it from closing automatically due to its own weight or slight wind pressure. Current outward-opening top-hung windows using diagonal braces have the following drawbacks: existing positioning mechanisms typically consist of multiple independent parts, resulting in a cumbersome structure, complex installation and debugging processes, and a tendency for assembly errors that affect positioning accuracy; some devices require additional operation for unlocking, which is inconvenient, and after prolonged use, wear and tear on frequently rubbing surfaces due to poor design can lead to positioning failure; under strong winds or external forces, some positioning devices may fail to reliably lock the window sash, posing a safety hazard of sash swaying or falling. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings and deficiencies of the existing technology and to provide a locking mechanism for a diagonal tie rod in an outward-opening top-hung hardware system.

[0004] A locking mechanism for a diagonal tie rod in an outward-opening, top-hung hardware system, the diagonal tie rod including a movable tie rod, the movable tie rod being slidably mounted on a base for positioning a first connecting rod of the diagonal tie rod, the base being provided with a first connecting rod, the first connecting rod having a limiting groove at one end near the base, and the positioning device including a limiting block having a locking part;

[0005] When the window sash needs to be opened to its maximum position, the locking part extends out of the base and engages with the limiting groove to form a limiting connection, thus locking the window sash. The movable pull rod is provided with an unlocking part. When the window sash needs to be closed, the locking part is driven by the handle to slide in the base. The unlocking part abuts against the limiting block to form a lever effect, thereby releasing the locking part from the limiting groove and thus unlocking the window sash.

[0006] This structure integrates functional components such as the first connecting rod and the movable tie rod onto a single base, avoiding the cumbersome installation of multiple parts in traditional methods. This simplifies the assembly process, reduces error accumulation, and improves positioning accuracy and reliability. The integrated base design ensures a fixed installation position and unified reference for the positioning mechanism. The locking mechanism between the limiting groove and the limiting block is reliable, requiring only simple adjustment of the handle's pull stroke during debugging, eliminating the need for complex torque or gap calibration and significantly saving on-site construction and maintenance time. The locking part extends through the limiting block and securely engages with the limiting groove at the maximum opening position, ensuring the window sash remains stably open under wind loads or external forces, preventing accidental swinging or falling and maximizing safety. Due to its compact structure and easy adjustment, this positioning device can be flexibly applied to various outward-opening top-hung windows, especially suitable for high-rise office buildings, commercial buildings, hotels, and other building scenarios with high requirements for sealing, sound insulation, and wind resistance.

[0007] Preferably, the base is provided with a mounting groove for accommodating the limiting block, and the limiting block is provided with a reset groove. The limiting block is rotatably mounted in the mounting groove through a fixing pin passing through the reset groove. A torsion spring is sleeved on the fixing pin and located in the reset groove, used to elastically drive the limiting block to unlock from the movable pull rod. The reset groove on the limiting block, in conjunction with the fixing pin and the torsion spring, allows the limiting block to automatically reset to the locking position after unlocking, eliminating the need for manual reset or additional operation, further improving ease of use and response speed. The torsion spring continuously applies an elastic preload to the limiting block, ensuring that the limiting block is tightly attached to the mounting groove in the unlocked state, preventing displacement of the limiting block due to vibration or wind, thus ensuring accurate engagement with the limiting groove with each opening and closing. The coordinated design of the reset groove, mounting groove, fixing pin, and torsion spring achieves the elastic reset function without the need for an additional reset spring seat or complex linkage mechanism, maintaining the overall compactness of the device and helping to reduce production and assembly costs.

[0008] Furthermore, the rear side of the reset groove is provided with a push-button part for cooperating with the unlocking part of the movable pull rod. The bottom of the push-button part has a fixing groove that fits into one end of the torsion spring. The fixing groove is L-shaped to match the shape of the torsion spring, and the other end of the torsion spring abuts against the bottom of the mounting groove. The push-button part cooperates with the unlocking part of the movable pull rod, so that the elastic force of the torsion spring acts directly on the push-button part through the fixing groove, thereby generating a clear and controllable lever displacement when pressed, ensuring accurate disengagement from the limiting groove in one go, and avoiding incomplete unlocking or jamming due to excessive shaking. The fixing groove adopts an L-shaped fitting structure with the same shape as the end of the torsion spring, which firmly locks the torsion spring in the bottom of the push-button part, effectively preventing swaying or eccentricity, ensuring that the spring is always in the optimal pre-tension position, and enhancing the stability of the device during repeated operation. The push-button part, fixing groove, reset groove and mounting groove are reasonably integrated into the base integrated structure, without the need for additional support components, which not only maintains the slim design of the device, but also further reduces material and production costs.

[0009] Furthermore, the pressing part includes an arc-shaped protruding pressing surface and inclined surfaces on both sides of the pressing surface. The unlocking part protrudes from the bottom of the movable pull rod, and the cross-section of the unlocking part is inverted trapezoidal. The inclined surfaces on both sides of the pressing surface guide the unlocking part into the center of the pressing part like inclined rails, so that the unlocking force of the movable pull rod is concentrated and transmitted in a predetermined direction, avoiding jamming caused by lateral deviation or uneven load. During the pressing process, the wider upper bottom of the inverted trapezoidal cross-section of the unlocking part first contacts the inclined surfaces on both sides, and then presses against the pressing surface, producing a self-centering effect, ensuring that the locking part evenly disengages from the limiting groove and stably exits.

[0010] Preferably, the base has a locking hole at its bottom, through which the locking part passes and is connected to the limiting groove. The limiting groove is an arc-shaped groove, and the locking part is a cylinder that matches the limiting groove. The geometric fit between the cylindrical locking part and the arc-shaped groove allows the locking part to automatically center and smoothly insert into the limiting groove at the end of its stroke. When unlocking, it can also smoothly exit along the same trajectory, making the operation more reliable and without jamming. The locking part, being a cylinder that matches the arc-shaped limiting groove, passes through the locking hole at the bottom of the base, enabling a combination of surface contact and line contact locking, ensuring extremely high resistance to lateral displacement at all opening positions.

[0011] Furthermore, the limiting groove has an opening, the width of which is greater than the width of the locking part. One side of the opening is inclined towards the base, and the locking hole is an elongated oval hole. The width of the limiting groove is greater than the diameter of the cylindrical locking part, and the inclined surface design of the opening side allows the locking part to automatically enter the limiting groove without strict alignment during its final stroke, greatly reducing the dimensional accuracy requirements during assembly and on-site installation. The elongated oval hole structure provides elastic movement space along the length of the hole for the locking part under different temperatures, wind forces, or minor deformations of the window sash, ensuring that the locking part can always smoothly enter and exit the limiting groove without generating excessive stress.

[0012] Preferably, the base is provided with a sliding groove, and a sliding block is slidably installed in the sliding groove. The sliding block extends out of the sliding groove through a sliding pin and is fixedly connected to the first connecting rod. The limiting groove is located at one end near the sliding groove. The sliding groove and the sliding block cooperate to form a linear guide rail, ensuring that the movable lever always moves smoothly along a predetermined trajectory during unlocking and locking actions. The sliding groove, sliding block, first connecting rod, and limiting groove are arranged in sections on the same base, eliminating the need for additional brackets or connecting parts, thus achieving a higher degree of modular integration.

[0013] Furthermore, a second connecting rod is rotatably mounted on the base, with the other end of the second connecting rod rotatably mounted on the first connecting rod. By adjusting the hinge point positions of the second connecting rod, the base, and the first connecting rod, the angle and travel range of the locking part can be flexibly set to adapt to the maximum opening angle and locking requirements of window sashes of different specifications. When the window sash approaches the maximum opening position, the second connecting rod and the first connecting rod form a nearly collinear mechanical configuration, generating a self-locking effect, reducing reliance on torsion springs and friction components, and improving overall stability.

[0014] Preferably, the base has a groove, and the movable pull rod is slidably installed in the groove. A fixing block is provided on the inner wall of the base to restrict the vertical movement of the movable pull rod. The fixing block restricts the vertical freedom of the movable pull rod, allowing it to move only horizontally along the groove. After restricting vertical movement, the movable pull rod always remains in the center of the groove. The fixing block and the groove are integrated, eliminating the need for additional guides or adjustment devices. The pull rod automatically centers after being inserted into the groove, allowing for rapid assembly without cumbersome height calibration.

[0015] Preferably, the other end of the movable pull rod extends out of the base and is fixedly installed on the first fixed seat, which is used to fix it to the window sash, and the other end of the first connecting rod is rotatably installed on the second fixed seat, which is used to fix it to the window frame.

[0016] The beneficial effects of this utility model are as follows: This device integrates functional components such as the positioning component, the first connecting rod, and the movable pull rod onto the same base, avoiding the cumbersome installation of multiple parts in traditional methods. This not only simplifies the assembly process but also reduces error accumulation and improves positioning accuracy and reliability. The integrated base design ensures a fixed installation position and unified reference for the positioning mechanism; the locking fit between the limiting groove and the limiting block is reliable. During debugging, only a simple adjustment of the handle's pulling stroke is required, eliminating the need for complex torque or gap calibration, greatly saving on-site construction and maintenance time. The locking part extends through the limiting block and is firmly locked into the limiting groove at the maximum opening position, ensuring that the window sash remains stably open under wind loads or external forces, eliminating the risk of accidental swinging or falling, and maximizing safety. Due to its compact structure and easy adjustment, this positioning device can be flexibly applied to various types of outward-opening top-hung windows, especially suitable for high-rise office buildings, commercial buildings, hotels, and other building scenarios with high requirements for sealing, sound insulation, and wind resistance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a rear view of the present invention;

[0020] Figure 3 yes Figure 2 Enlarged detail view of point A in the middle;

[0021] Figure 4 This is a cross-sectional view of the present invention;

[0022] Figure 5 for Figure 4 Enlarged detail view of point B in the middle;

[0023] Figure 6 This is a schematic diagram of the limiting block structure;

[0024] Figure 7 This is the rear view of the limit block;

[0025] In the figure, 1. Base; 11. Mounting groove; 12. Locking hole; 13. Sliding groove; 14. Sliding block; 15. Sliding pin; 16. Sliding groove; 17. Fixing block; 2. First connecting rod; 21. Limiting groove; 22. Opening; 3. Limiting block; 31. Locking part; 32. Reset groove; 33. Fixing pin; 34. Torsion spring; 35. Pressing part; 36. Fixing groove; 37. Pressing surface; 38. Inclined surface; 4. Movable pull rod; 41. Unlocking part. Detailed Implementation

[0026] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0027] It should be noted that all uses of "first" and "second" in the embodiments of this utility model are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0028] The directional and positional terms used in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0029] like Figure 1-7As shown, this is an embodiment of the locking mechanism of the diagonal tie rod for an externally opening and top-hung hardware system of the present invention. The diagonal tie rod includes a movable tie rod 4, which is slidably mounted on the base 1 and used to position the first connecting rod 2 of the diagonal tie rod. The base 1 is provided with the first connecting rod 2, and the end of the first connecting rod 2 near the base 1 is provided with a limiting groove 21. The positioning device includes a limiting block 3, and the limiting block 3 is provided with a locking part 31.

[0030] When the window sash needs to be opened to its maximum position, the locking part 31 extends out of the base 1 and engages with the limiting groove 21 to form a limiting connection, thus locking the window sash. The movable pull rod 4 is provided with an unlocking part 41. When the window sash needs to be closed, the locking part 31 is driven by the handle to slide in the base 1. The unlocking part 41 abuts against the limiting block 3 to form a lever effect, thereby releasing the locking part 31 from the limiting groove 21 and thus unlocking the window sash.

[0031] This device integrates functional components such as the first connecting rod 2 and the movable pull rod 4 onto the same base 1, avoiding the cumbersome installation of multiple parts in traditional methods. This not only simplifies the assembly process but also reduces error accumulation and improves positioning accuracy and reliability. The integrated design of the base 1 ensures a fixed installation position and unified reference for the positioning mechanism. The locking groove 21 and the locking block 3 have a reliable engagement, requiring only simple adjustment of the handle's pulling stroke during debugging, eliminating the need for complex torque or gap calibration, thus greatly saving on-site construction and maintenance time. The locking part 31 extends through the locking block 3 and is firmly locked into the locking groove 21 at the maximum opening position, ensuring that the window sash remains stably open under wind loads or external forces, preventing accidental swinging or falling risks, and maximizing safety. Due to its compact structure and easy adjustment, this positioning device can be flexibly applied to various outward-opening and top-hung window types, especially suitable for high-rise office buildings, commercial buildings, hotels, and other building scenarios with high requirements for sealing, sound insulation, and wind resistance.

[0032] The base 1 has a mounting groove 11 for accommodating the limiting block 3. The limiting block 3 has a reset groove 32. The limiting block 3 is rotatably mounted in the mounting groove 11 through the reset groove 32 via a fixing pin 33. A torsion spring 34 is sleeved on the fixing pin 33 and located in the reset groove 32, used to elastically drive the limiting block 3 to unlock from the movable pull rod 4. The reset groove 32 on the limiting block 3, together with the fixing pin 33 and the torsion spring 34, allows the limiting block 3 to automatically reset to the locking position after unlocking, without manual reset or additional operation, further improving ease of use and response speed. The torsion spring 34 continuously applies an elastic preload to the limiting block 3, ensuring that the limiting block 3 is tightly attached to the mounting groove 11 in the unlocked state, preventing the limiting block 3 from shifting due to vibration or wind, thus ensuring that it accurately engages with the limiting groove 21 each time it is opened or closed. The design of the reset groove 32, the mounting groove 11 and the fixed pin 33 and torsion spring 34 can achieve the elastic reset function without the need for additional reset spring seats or complex linkage mechanisms. This maintains the overall compactness of the device and helps to reduce production and assembly costs.

[0033] The rear side of the reset groove 32 is provided with a push part 35 for cooperating with the unlocking part 41 of the movable pull rod 4. The bottom of the push part 35 is provided with a fixing groove 36 that fits into one end of the torsion spring 34. The fixing groove 36 is L-shaped to match the shape of the torsion spring 34. The other end of the torsion spring 34 abuts against the bottom of the mounting groove 11. The push part 35 cooperates with the unlocking part 41 of the movable pull rod 4, so that the elastic force of the torsion spring 34 acts directly on the push part 35 through the fixing groove 36, thereby generating a clear and controllable lever displacement when pressed, ensuring accurate disengagement from the limiting groove 21 in one go, and avoiding incomplete unlocking or jamming due to excessive shaking. The fixing groove 36 adopts an L-shaped fitting structure with the same shape as the end of the torsion spring 34, which firmly locks the torsion spring 34 to the bottom of the push part 35, effectively preventing swaying or eccentricity, ensuring that the spring is always in the optimal pre-tension position, and enhancing the stability of the device during repeated operation. The push part 35, the fixing groove 36, the reset groove 32 and the mounting groove 11 are reasonably integrated into the integrated structure of the base 1, without the need for additional support components. This not only maintains the slim design of the device, but also further reduces material and production costs.

[0034] The pressing part 35 includes an arc-shaped protruding pressing surface 37 and inclined surfaces 38 on both sides of the pressing surface 37. The unlocking part 41 protrudes from the bottom of the movable pull rod 4, and the cross-section of the unlocking part 41 is inverted trapezoidal. The inclined surfaces 38 on both sides of the pressing surface 37 guide the unlocking part 41 into the center of the pressing part 35 like inclined rails, so that the unlocking force of the movable pull rod 4 is concentrated and transmitted in a predetermined direction, avoiding jamming caused by lateral deviation or uneven load. During the pressing process, the wider upper bottom of the inverted trapezoidal cross-section of the unlocking part 41 first contacts the inclined surfaces on both sides, and then presses against the pressing surface 37, producing a self-centering effect, ensuring that the locking part 31 evenly disengages from the limiting groove 21 and stably exits.

[0035] The base 1 has a locking hole 12 at its bottom. The locking part 31 passes through the locking hole 12 and is connected to the limiting groove 21 for positioning. The limiting groove 21 is an arc-shaped groove, and the locking part 31 is a cylinder that matches the limiting groove 21. The geometric fit between the cylindrical locking part 31 and the arc-shaped groove allows the locking part 31 to automatically center and smoothly insert into the limiting groove 21 at the end of its stroke. When unlocking, it can also smoothly exit along the same trajectory, making the operation more reliable and without jamming. The locking part 31 is a cylinder that matches the arc-shaped limiting groove 21. After passing through the locking hole 12 at the bottom of the base 1, it can achieve a combination of surface contact and line contact locking, ensuring extremely high resistance to lateral displacement at all opening positions.

[0036] In this embodiment, unlike the previous embodiment, the limiting groove 21 has an opening 22. The width of the limiting groove 21 is greater than the width of the locking part 31. One side of the opening 22 is inclined towards the base 1. The locking hole 12 is an elongated hole. The width of the limiting groove 21 is greater than the diameter of the cylindrical locking part 31, and the inclined surface design of the opening 22 towards the base 1 allows the locking part 31 to be automatically guided into the limiting groove 21 without strict alignment during its end stroke, greatly reducing the dimensional accuracy requirements during assembly and on-site installation. The elongated hole 12 provides elastic movement space along the length of the hole for the locking part 31 under different temperatures, wind forces, or minor deformations of the window sash, ensuring that the locking part 31 can always smoothly enter and exit the limiting groove 21 without generating excessive stress.

[0037] The base 1 is provided with a sliding groove 13, and a sliding block 14 is slidably installed in the sliding groove 13. The sliding block 14 extends out of the sliding groove 13 through a sliding pin 15 and is fixedly connected to the first connecting rod 2. The limiting groove 21 is provided at one end near the sliding groove 13. The sliding groove 13 and the sliding block 14 cooperate to form a linear guide rail, ensuring that the movable pull rod 4 always moves smoothly along a predetermined trajectory during unlocking and locking actions. The sliding groove 13, the sliding block 14, the first connecting rod 2, and the limiting groove 21 are arranged in sections on the same base 1, eliminating the need for additional brackets or connecting parts, and achieving a higher degree of modular integration.

[0038] The working principle of this device is as follows:

[0039] The user rotates the handle on the window sash inwards or outwards, causing the movable rod to move linearly along the base. When the window sash is fully open, the locking part of the limiting block, under its own weight and the force of the torsion spring, engages with the limiting groove of the first connecting rod, achieving the positioning function. When unlocking is required, the handle is rotated back about 30°, and the inverted trapezoidal unlocking part on the movable rod moves to the inclined surface of the limiting block and presses it down. The inverted trapezoidal unlocking part is pressed to the high point of the arc-shaped pressing surface, and the locking part of the limiting block lifts up and separates from the notch of the long connecting rod, thus unlocking the window sash and pulling it back.

[0040] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

[0041] Although the present invention has been described with reference to several specific embodiments, it should be understood that the present invention is not limited to the specific embodiments disclosed. The present invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A locking mechanism for a diagonal tie rod in an outward-opening, top-hung hardware system, the diagonal tie rod comprising a movable tie rod slidably mounted on a base for positioning a first connecting rod of the diagonal tie rod, the base being provided with the first connecting rod, characterized in that: The first connecting rod has a limiting groove at one end near the base, and the positioning device includes a limiting block, which has a locking part. When the window sash needs to be opened to its maximum position, the locking part extends out of the base and engages with the limiting groove to form a limiting connection, thus locking the window sash. The movable pull rod is provided with an unlocking part. When the window sash needs to be closed, the locking part is driven by the handle to slide in the base. The unlocking part abuts against the limiting block to form a lever effect, thereby releasing the locking part from the limiting groove and thus unlocking the window sash.

2. The locking mechanism of the diagonal tie rod for the outward-opening top-hung hardware system as described in claim 1, characterized in that: The base is provided with a mounting groove for accommodating the limiting block, and the limiting block is provided with a reset groove. The limiting block is rotatably mounted in the mounting groove by passing through the reset groove with a fixing pin. A torsion spring located in the reset groove is sleeved on the fixing pin, which is used to elastically drive the limiting block to unlock from the movable pull rod.

3. The locking mechanism of the diagonal tie rod for the outward-opening top-hung hardware system as described in claim 2, characterized in that: The rear side of the reset groove is provided with a push part for cooperating with the unlocking part of the movable pull rod. The bottom of the push part is provided with a fixing groove that fits into one end of the torsion spring. The fixing groove is L-shaped to match the shape of the torsion spring. The other end of the torsion spring abuts against the bottom of the mounting groove.

4. The locking mechanism of the diagonal tie rod for the outward-opening top-hung hardware system as described in claim 3, characterized in that: The pressing part includes an arc-shaped protruding pressing surface and inclined surfaces on both sides of the pressing surface. The unlocking part is protruding at the bottom of the movable lever, and the cross-section of the unlocking part is an inverted trapezoid.

5. The locking mechanism of the diagonal tie rod for the outward-opening top-hung hardware system as described in claim 1, characterized in that: The base has a locking hole at the bottom, and the locking part passes through the locking hole and is connected to the limiting groove for limiting. The limiting groove is an arc-shaped groove, and the locking part is a cylinder that matches the limiting groove.

6. The locking mechanism of the diagonal tie rod for the outward-opening top-hung hardware system as described in claim 5, characterized in that: The limiting groove has an opening, the width of the limiting groove is greater than the width of the locking part, one side of the opening is inclined towards the base, and the locking hole is an elongated hole.

7. The locking mechanism of the diagonal tie rod for the outward-opening top-hung hardware system as described in claim 1, characterized in that: The base is provided with a sliding groove, and a sliding block is slidably installed in the sliding groove. The sliding block extends out of the sliding groove through a sliding pin and is fixedly connected to the first connecting rod so that the first connecting rod can rotate relative to the base. The limiting groove is provided at one end near the sliding groove.

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