Limiting structure for inside turning of sliding fan

Abstract

The utility model provides a push -and -pull fan inside falls limit structure, including fixed in the limit casing of push -and -pull fan and in the limit casing one side vertical slidable external movement component, still include trigger, blocking piece, transmission part, wherein, trigger is configured as when being pressed by the door and window frame, displacement occurs, and through transmission part drive blocking piece removal, make the protruding part from a blocking position switch to a avoiding position. Through setting triggerable by the door and window frame trigger, the blocking piece of blocking movement component and the transmission part of connecting both, constitute a set of pure mechanical type position sensing and linkage control system. Change the activation logic of the existing push -and -pull window inside falls function, limit inside falls function from 'everywhere available' to 'only position available'.

Description

Technical Field

[0001] This utility model relates to the technical field of sliding window hardware, specifically to an inverted limiting structure inside a sliding sash. Background Technology

[0002] In the field of sliding windows, our company has previously applied for and successfully provided a high-efficiency hardware system integrating tilting, airtightness, and sliding, as disclosed in patent document CN119801364A, entitled "A Sliding Window Assembly with Inward Tilt, Airtightness, and Sliding Functions." Specifically, when the sliding key disengages from the slot of the limiting member, the inward tilt linkage unlocks, allowing the user to pull the glass sash inward to achieve tilting; simultaneously, by sliding the sliding key in the inclined groove, the sliding glass sash can be driven to move slightly outward, closely adhering to the door and window frame profile, achieving airtightness and locking effect.

[0003] However, practical experience has revealed a drawback in the aforementioned advanced dual-hardware system that impacts user experience. Since the tilt-in function's activation depends solely on the handle's operation, regardless of the sliding sash's position on the track, it can be tilted inwards from any position on the track. The primary purpose of the tilt-in function is to open the sliding sash inwards at a certain angle when ventilation is needed, particularly at door / window locations. However, tilting inwards from non-window locations, such as at the position corresponding to a fixed sash, causes unnecessary additional loads on the tilt-in linkage, guide wheels, and other components, affecting aesthetics. Since the sliding sash's displacement already exposes the door / window, the exposed door / window itself provides effective ventilation. Therefore, performing a separate tilt-in operation is not only impractical but also increases mechanical wear and functional damage to the hardware due to frequent unnecessary starts and stops and loads on the tilt-in linkage mechanism. Utility Model Content

[0004] This invention proposes an inward tilting limiting structure for push-pull windows, which solves the problem that in the prior art, push-pull glass windows can be tilted inward at any position on the track, resulting in increased wear.

[0005] The technical solution of this utility model is implemented as follows: The sliding fan inner limiting structure includes a limiting shell fixed to the sliding glass fan profile and an external moving part that can slide vertically on one side of the limiting shell; It also includes a trigger and a blocking member movably disposed on the limiting housing; the trigger has a contact portion exposed outside the limiting housing, and the blocking member has a protrusion for blocking the movement of external moving parts; A transmission component is movably connected inside the limiting housing, and the transmission component is located between the trigger component and the blocking component and is movably connected to both of them; The trigger is configured to displace when pressed by a door or window frame and drive the blocking member to move via a transmission member, so that the protrusion switches from a blocking position to a yielding position.

[0006] Furthermore, the limiting housing is provided with a guide groove for the sliding of the moving part; in the blocking position, the protrusion of the blocking member extends into the guide groove; in the avoidance position, the protrusion of the blocking member retracts from the guide groove.

[0007] Furthermore, the external moving component is located at the end of the corner of a door and window hardware system and is driven by the corner.

[0008] Furthermore, an extended notch is formed between the end of the corner unit and the external moving part.

[0009] Furthermore, the trigger is slidably disposed in a sliding hole opened on the limiting housing; the blocking member is slidably disposed in a sliding groove opened inside the limiting housing; the transmission member is rotatably disposed in a movable groove opened inside the limiting housing via a rotating shaft, and both ends of the transmission member extend to the sliding hole and the sliding groove respectively and are in transmission cooperation with the trigger and the blocking member.

[0010] Furthermore, the top of the transmission component abuts against the end of the trigger component; the bottom of the transmission component extends and inserts into the transmission hole or transmission groove opened on the blocking component.

[0011] Furthermore, the trigger is provided with an anti-detachment protrusion, and the inner wall of the sliding hole is provided with a limiting protrusion that cooperates with the anti-detachment protrusion. The cooperation between the anti-detachment protrusion and the limiting protrusion restricts the sliding stroke of the trigger in the sliding hole.

[0012] Furthermore, the contact portion of the trigger is located away from the anti-detachment protrusion.

[0013] Furthermore, it also includes an elastic reset member that applies a spring force to the blocking member to move it toward the blocking position.

[0014] Furthermore, the elastic reset element is a spring, and there are two springs. The two springs are respectively disposed on both sides of the blocking element along its sliding direction, and respectively abut against the inner wall of the slide groove and the blocking element.

[0015] The beneficial effects of the technical solution provided in this application are as follows: 1. This application constructs a purely mechanical position sensing and linkage control system by setting a trigger that can be triggered by the door and window frame, a blocking component that can block the moving parts, and a transmission component connecting the two. It changes the activation logic of the existing tilt-and-turn function of sliding windows, restricting the tilt-and-turn function from "available anywhere" to "available only at a specific location." Specifically, the blocking of the moving parts is released and the tilt-and-turn function is activated only when the glass sash moves to the preset window position, the trigger contacts the door and window frame, and the aforementioned linkage control is initiated. This not only solves the core problem of unnecessary, unsightly, and wasteful tilt-and-turn operations at non-window positions, but also provides a clear structural principle, eliminates the need for electronic components, offers high reliability and low cost, and is easy to integrate into existing hardware systems. 2. This application, through the specific mechanical configuration of using block-shaped components as triggering and blocking components, and rod-shaped components as transmission components, combined with guide grooves to guide the path of moving parts, makes the transmission of the entire limiting action more direct, precise, and reliable. The introduction of the elastic reset component ensures that after the glass sash leaves the window position, the entire limiting structure can automatically and quickly reset to the normally closed blocking state, achieving fully automated "open when it comes, close when it leaves," requiring no additional user operation and improving the user experience. The symmetrical arrangement of the double springs further ensures the force balance and smooth movement of the limiting block during sliding and reset, preventing one-sided wear and jamming, and improving the consistency of the mechanism's actions. 3. In this application, the anti-disengagement protrusion on the trigger and the upper limit protrusion on the limiting housing cooperate to form an effective stroke limiting mechanism, preventing the trigger from slipping out or being damaged due to excessive sliding during frequent use, thus ensuring the structural integrity and functional stability for long-term use. Simultaneously, the abutment and insertion-type transmission connection between the transmission component, trigger, and blocking component, as well as the guide slope or arc surface design at the end of the trigger, these optimized details work together to make the force transmission between components smoother, the action conversion efficiency higher, and the contact process with the door and window frame smoother, effectively reducing impact and noise, making the entire mechanism operate more smoothly and reliably. Attached Figure Description

[0016] 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, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the installation of Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the installation of Embodiment 2 of this utility model; Figure 3 This is an exploded view of Embodiment 2 of the present invention; Figure 4 This is an exploded view of the inverted limiting structure inside the push-pull fan of this utility model; Figure 5 This is a schematic diagram showing the state of the adjusting block of this utility model abutting against the door and window frame profile; Figure 6 This is a side view of the adjusting block of this utility model abutting against the door and window frame profile.

[0018] In the figure: 1 Limiting housing, 11 Sliding hole, 12 Movable groove, 13 Sliding groove, 14 Guide groove, 15 Limiting protrusion, 2 Rotating shaft, 3 Transmission component, 4 Blocking component, 5 Triggering component, 6 External moving component, 7 Elastic reset component, 8 Sliding glass sash profile, 9 Door and window frame profile, 10 Corner unit. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] The core of this utility model lies in providing a key functional supplement and optimization to existing advanced sliding window hardware systems, such as the "Sliding Window Assembly with Inward Tilt, Airtightness, and Translation" disclosed in our prior patent CN119801364A. It should be noted that the hardware system disclosed in that prior patent document constitutes the application basis and practical environment of this utility model; furthermore, the hardware system itself belongs to the prior art known in this field. This system uses a handle to drive a linkage mechanism composed of gears, racks, sliding members, and flexible transmission strips, ultimately controlling the movement of the pulley assemblies at the top and bottom of the sash, thereby achieving multiple functions such as translation, lateral movement, sealing, and locking of the sash. Specifically, the rotational motion of the handle is converted into the linear motion of the rack through internal gears. This rack is connected to the sliding members arranged around the sash, and adjacent sliding members are connected at the corners of the sash by flexible strips to achieve continuous transmission of motion.

[0021] It should be noted that in this hardware system, different rotation angles of the handle correspond to different functional states: typically, rotating the handle upwards to a vertical position unlocks the tilt-in function; for the specific working principle of the tilt-in function, please refer to the aforementioned prior patent documents. The tilt-in limiting structure of this utility model is designed to impose a positional constraint on the "unlocking of the tilt-in function" step in this system.

[0022] Example 1

[0023] Please see Figure 1 , Figure 5 , Figure 6 The sliding sash inner limiting structure of this utility model comprises a limiting housing 1, a trigger 5, a blocking member 4, and a transmission member 3. The limiting housing 1 serves as the mounting base for the entire structure and is fixed to the side of the sliding sash profile 8 by screws or other fasteners. Its installation position is usually preferably in the lower area of ​​the sash to ensure effective interaction with the door and window frame profile 9.

[0024] A guide groove 14 is provided on the side of the limiting housing 1 near the sliding glass sash profile 8. The guide groove 14 is used to guide and accommodate the sliding of the external moving part 6 from the hardware system. The "external moving part 6" here corresponds to the key moving part that realizes the inward tilting unlocking function in the prior patent. The up and down sliding of this part 6 is directly related to the unlocking and locking of the inward tilting function.

[0025] In this embodiment, the trigger 5 is specifically embodied as a block-shaped adjusting block. The trigger 5 is slidably disposed in a sliding hole 11 opened in the limiting housing 1. A portion of the trigger 5, i.e., its contact portion, extends from the limiting housing 1, facing and located on the outside of the sliding sash profile 8, allowing it to contact the fixed door / window frame profile 9. To ensure that the trigger 5 does not accidentally dislodge from the sliding hole 11 during sliding and to limit its sliding stroke, one or more anti-dislodgement protrusions 51 are provided on the side wall of the trigger 5. Correspondingly, a limiting protrusion 15 that cooperates with the anti-dislodgement protrusion 51 is provided on the inner wall of the sliding hole 11. The cooperation between the anti-dislodgement protrusion 51 and the limiting protrusion 15 constitutes a reliable stroke limiting mechanism.

[0026] In this embodiment, the blocking member 4 is specifically embodied as a block-shaped limiting block. The blocking member 4 is slidably disposed within a groove 13 formed inside the limiting housing 1. The blocking member 4 has a protruding portion, i.e., its protrusion, the position of which is designed to interfere with the path of the guide groove 14. The blocking member 4 can slide between two key positions within the groove 13: one is the "blocking position," in which its protrusion extends into the guide groove 14; the other is the "avoidance position," in which its protrusion completely retracts from the path of the guide groove 14.

[0027] To ensure that the blocking member 4 automatically remains in the "blocking position" without external force intervention and automatically resets after the triggering action, this invention includes an elastic reset member 7. This elastic reset member 7 is preferably a spring. To further enhance the smoothness of movement and the balance of force, two springs are preferably used. These two springs are respectively disposed on both sides of the blocking member 4 along its sliding direction, with each end firmly abutting against the inner wall of the slide groove 13 and the side of the blocking member 4, respectively, jointly applying a spring force to the blocking member 4 to tend towards the "blocking position".

[0028] The transmission component 3, serving as a bridge connecting the triggering and execution actions, is specifically embodied in this embodiment as a rod-shaped swing arm. The transmission component 3 is rotatably mounted in a movable slot 12 within the limiting housing 1 via a rotating shaft 2. The overall shape of the transmission component 3 can be designed as an S-shape or other suitable lever shape to optimize the force transmission path and transmission ratio. Both ends of the transmission component 3 are movably connected to the trigger component 5 and the blocking component 4, respectively. Specifically, the top of the transmission component 3 forms an abutting transmission relationship with the end of the trigger component 5 located within the limiting housing 1; while the bottom of the transmission component 3 extends and inserts into a transmission hole or groove on the blocking component 4, forming an insert-type transmission connection. This connection method ensures effective force transmission and precise conversion of the direction of motion.

[0029] The working principle of this utility model is as follows: When the sliding sash is in a non-window position, that is, in the normal state where the trigger 5 is not in contact with the door / window frame profile 9, the combined force of the two springs pushes the blocking member 4 to the "blocking position," causing its protrusion to firmly extend into the guide groove 14. At this time, the up-and-down sliding path of the external moving part 6 of the hardware system is blocked by the blocking member 4, preventing the handle from being rotated to the inward tilt unlocking angle, thereby effectively preventing the activation of the inward tilt function in non-target positions.

[0030] When the user slides the sliding sash to the preset window position, the exposed contact portion of the trigger 5 on the limiting housing 1 contacts and is pressed against the side wall of the door / window frame profile 9. This pressing force pushes the trigger 5 to slide inward in the sliding hole 11. The inward movement of the trigger 5, in turn, pushes the top of the transmission member 3, which abuts against its end, forcing the transmission member 3 to rotate around the pivot 2.

[0031] The rotation of the transmission component 3 causes its bottom to move within the transmission hole or groove of the blocking component 4, thereby actuating the blocking component 4 to resist the elastic force of the two springs and slide inward within the slide groove 13, moving from its "blocking position" to its "avoidance position". In this position, the protrusion of the blocking component 4 completely exits the path of the guide groove 14, releasing it from obstruction of the movement path of the external moving component 6.

[0032] At this point, with the external moving part 6's movement path unobstructed, the user can operate the handle normally. The handle can be rotated to the inward tilt unlocking angle, driving the external moving part 6 to complete the corresponding movement to unlock the inward tilt linkage. Subsequently, the user can pull the sash towards the room, smoothly achieving inward tilt ventilation. It is worth noting that even when the limiting structure of this invention is in the released state at the window position, it will not affect the handle's continued rotation to activate other functions, such as the side-shift sealing function, because the movement path of the external moving part 6 required for this function is also unobstructed.

[0033] When the glass sash moves away from the window position, the trigger 5 loses the resistance from the door and window frame profile 9. Under the restoring force of the two springs, the blocking member 4 is pushed back to the "blocking position," and through the reverse transmission of the transmission member 3, the trigger 5 is also reset to its initial extended state. The entire limiting structure returns to its normally closed blocking state, and the activation of the tilt-in function is once again prohibited. This process is completely automated and requires no user intervention.

[0034] Based on the above basic embodiments, this utility model also provides another preferred embodiment, which further optimizes the integration and spatial adaptability of the limiting structure with the entire hardware system.

[0035] Example 2

[0036] Please see Figure 2 , Figure 3 In this embodiment, the external moving component 6 is integrated into the corner unit 10 of the door and window hardware system. It should be noted that the corner unit 10 is a conventional component in sliding window hardware systems, mainly used to change the direction of power transmission at the corner of the glass sash. It is usually achieved through gear or slider structures in the door and window hardware system to realize the movement linkage between adjacent sliding parts.

[0037] In this embodiment, the external moving component 6 is specifically positioned at the end of a lower corner bracket 10 near the corner of the door / window frame profile 9. An extended notch is provided at the connection point between the end of the corner bracket 10 and the external moving component 6. This design allows the corner bracket 10 itself to serve as the final transmission body driving the movement of the external moving component 6. Correspondingly, the sliding sash inner limiting structure is provided on the glass sash and precisely aligned with the position of the external moving component 6 at the end of the corner bracket 10.

[0038] Since the corner bracket 10 is integrated into the lower part of the glass sash, this layout allows the inverted limiting structure inside the sliding sash to be installed naturally in this position, thereby enabling more precise contact and abutment with the door and window frame profile 9 that has moved to this position.

[0039] Even better, such as Figure 2 , Figure 3As shown, in this configuration, the inverted limiting structure inside the sliding sash can be reversed. That is, the installation orientation of the limiting housing 1 is adjusted so that the contact portion of the trigger 5 faces downward. This orientation allows the trigger 5 to better contact the upper edge or specific protruding structure of the door / window frame profile 9 from below when the sash moves to the window position, resulting in a more direct and reliable contact guidance. Of course, the scope of protection of this utility model is not limited to the specific direction of the trigger 5 facing upward or downward. Those skilled in the art can choose the most suitable installation orientation according to the actual installation environment and the matching relationship with the door / window frame profile 9. These are all equivalent embodiments under the concept of this utility model.

[0040] This embodiment, by coordinating the layout and design of the limiting structure with the corner unit 10 module of the existing hardware system, not only makes full use of the internal space of the system and simplifies the overall structure, but also further improves the accuracy and reliability of position triggering through flexible configurations such as reverse installation.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sliding fan inner limiting structure, characterized in that, It includes a limiting housing (1) fixed to the sliding glass sash profile and an external moving part (6) that can slide vertically on one side of the limiting housing (1). It also includes a trigger (5) and a blocking member (4) movably disposed on the limiting housing (1); the trigger (5) has a contact portion exposed outside the limiting housing (1), and the blocking member (4) has a protrusion for blocking the movement of an external moving part (6); The limiting housing (1) is movably connected to a transmission component (3), and the transmission component (3) is located between the trigger component (5) and the blocking component (4) and is movably connected to both of them; The trigger (5) is configured to move when it is pressed by the door or window frame and drive the blocking member (4) to move through the transmission member (3), so that the protrusion switches from a blocking position to a yielding position.

2. The sliding fan inner inverted limiting structure as described in claim 1, characterized in that, The limiting housing (1) is provided with a guide groove (14) for the moving part (6) to slide; in the blocking position, the protrusion of the blocking member (4) extends into the guide groove (14); in the avoidance position, the protrusion of the blocking member (4) exits from the guide groove (14).

3. The sliding fan inner inverted limiting structure as described in claim 1, characterized in that, The external moving part (6) is located at the end of the corner (10) of a door and window hardware system and is driven by the corner (10).

4. The sliding fan inner inverted limiting structure as described in claim 3, characterized in that, An extended notch is formed between the end of the corner (10) and the external moving part (6).

5. The sliding fan inner inverted limiting structure as described in claim 1, characterized in that, The trigger (5) is slidably disposed in the sliding hole (11) opened on the limiting housing (1); the blocking member (4) is slidably disposed in the sliding groove (13) opened inside the limiting housing (1); the transmission member (3) is rotatably disposed in the movable groove (12) opened inside the limiting housing (1) via a rotating shaft (2), and the two ends of the transmission member (3) extend to the sliding hole (11) and the sliding groove (13) respectively and are in transmission cooperation with the trigger (5) and the blocking member (4).

6. The sliding fan inner inverted limiting structure as described in claim 5, characterized in that, The top of the transmission member (3) abuts against the end of the trigger member (5); the bottom of the transmission member (3) extends and inserts into the transmission hole or transmission groove opened on the blocking member (4).

7. The sliding fan inner inverted limiting structure as described in claim 5, characterized in that, The trigger (5) is provided with an anti-detachment protrusion (51), and the inner wall of the sliding hole (11) is provided with a limiting protrusion (15) that cooperates with the anti-detachment protrusion (51). The cooperation between the anti-detachment protrusion (51) and the limiting protrusion (15) restricts the sliding stroke of the trigger (5) in the sliding hole (11).

8. The sliding fan inner inverted limiting structure as described in claim 7, characterized in that, The contact portion of the trigger (5) is on the side away from the anti-detachment protrusion (51).

9. The sliding fan inner inverted limiting structure as described in claim 1, characterized in that, It also includes an elastic reset member (7), which applies an elastic force to the blocking member (4) to make it tend toward the blocking position.

10. The sliding fan inner inverted limiting structure as described in claim 9, characterized in that, The elastic reset member (7) is a spring, and there are two springs. The two springs are respectively disposed on both sides of the blocking member (4) along its sliding direction and respectively abut against the inner wall of the slide groove (13) and the blocking member (4).

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