A lock and a sealed window of a granary applying the same

Abstract

The utility model discloses a lock and a granary sealing window using the same, wherein the lock comprises a rack and a transmission component and an execution component assembled on the rack. The transmission component is configured as a linear motion reversing mechanism, which is provided with an input part for receiving linear driving force and an output part for outputting linear output force to drive the execution component to perform extension or retraction movement. The granary sealing window comprises a window frame, a window sash installed on the window frame in an openable and closable manner, and the lock as described above. The lock provided by the utility model adopts the linear motion reversing mechanism, which can break through the limitation of the traditional transmission path of "rotation-linear conversion", can be directly connected with a linear driver, and fundamentally improves the dependence on high-torque motors for obtaining large thrust, thereby providing a lock for the sealing window or door, which is more direct in power transmission, more economical in system composition, and more reliable and durable in work.

Description

Technical Field

[0001] This utility model belongs to the field of lock technology, specifically relating to a lock and a grain warehouse sealing window using the same. Background Technology

[0002] The safe storage of grain is a strategic cornerstone for safeguarding the national economy and people's livelihood. For grain warehouses, especially large flat warehouses, the airtightness of their doors and windows is crucial for maintaining a constant temperature environment, inhibiting the growth of insects and mold, and achieving green grain preservation. In such storage buildings, the functional requirements for door and window locks far exceed ordinary fixing and anti-theft functions. Their core mission is to provide sufficient and uniform clamping force to drive the window sash (or door sash) to overcome the resistance of the inner sealing strip, causing it to undergo controllable elastic deformation, thereby forming a continuous and reliable airtight barrier around the entire perimeter of the door and window.

[0003] To meet this high standard of sealing requirements, one of the commonly adopted solutions in this field is to use a rotary-linear conversion mechanism as the core of the lock's transmission, specifically a gear-rack mechanism. The working principle of this mechanism is as follows: a drive motor provides rotational power, which drives the gear to rotate, thereby driving the meshing rack to move linearly, and finally the rack drives the bolt to complete the locking action.

[0004] However, this transmission mechanism, which relies on "rotation-linear conversion," faces serious challenges in practical applications: First, achieving high thrust output significantly increases the cost and energy consumption of the drive system. In the final stage of window sash locking, the latch needs to apply a large thrust along the tangent of the window sash's rotational motion to push it against the window frame, thereby compressing the weatherstripping. For a rack and pinion mechanism, the output thrust is directly related to the input torque. To meet the aforementioned thrust requirements, the drive motor must be able to provide sufficiently high output torque, which directly necessitates the use of a higher-power motor. High-power motors not only significantly increase equipment costs but also cause a substantial increase in energy consumption.

[0005] Secondly, the system has significant reliability issues when providing high thrust. In the final stage of the locking process, if significant resistance is encountered, the drive motor needs to continuously output high torque, which can easily lead to overheating and burnout due to overload. If this happens, it will directly cause the entire locking system to fail.

[0006] Therefore, there is an urgent need in this field for an innovative locking technology solution that can break through the limitations of the traditional transmission path of "rotation-linear conversion" and fundamentally improve the dependence on high-torque motors to obtain large thrust, thereby providing a lock for modern grain warehouses with more direct power transmission, more economical system configuration, and more reliable and durable operation. Utility Model Content

[0007] To address the technical problems of high system cost, high energy consumption, and insufficient reliability in existing technologies, this utility model provides a lock and a grain warehouse sealing window using the same.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A lock includes a frame and a transmission component and an execution component mounted on the frame. The transmission component is configured as a linear motion reversing mechanism, which is equipped with an input part for receiving linear driving force and an output part for outputting linear output force to drive the execution component to perform an extension or retraction movement; wherein the direction of the linear output force output by the output part is different from the direction of the linear driving force received by the input part.

[0009] As a limitation of this utility model, the transmission component includes: A push-pull rod, which is slidably mounted on the frame, serves as the input section for connection with a linear driver to receive linear driving force; A swing plate, which is rotatably mounted on the frame and linked with the push-pull rod, so that the push-pull rod drives the swing plate to swing around its rotation center; The swing plate is linked with the actuating component and serves as the output unit to convert the linear driving force received by the push-pull rod into a linear output force that acts on the actuating component.

[0010] As a further limitation of this utility model, the frame is provided with a first guide groove that is consistent with the direction of the linear driving force and a second guide groove that is consistent with the direction of the linear output force. The swing plate is provided with a first pin that is slidably assembled with the first guide groove, and a second pin that is slidably assembled with the second guide groove.

[0011] As a further limitation of this utility model, the swing plate is provided with a first elongated hole and a second elongated hole; the first pin is slidably assembled in the first elongated hole, and the second pin is slidably assembled in the second elongated hole.

[0012] As a further limitation of this utility model, a first contact ball is provided between the contact surface of the swing plate and the frame to reduce friction.

[0013] As another limitation of this utility model, the actuating end of the actuating component has a pressing inclined surface.

[0014] As a further limitation of this utility model, the actuating component includes a slide rail disposed on the frame and a locking tongue slidably mounted on the slide rail; the length direction of the slide rail is consistent with the direction of the linear output force; The latch has a pressing bevel.

[0015] As a further limitation of this utility model, the latch also has a pressing plane, which is disposed at the front of the bottom surface of the latch and connects to the bottom end of the pressing slope.

[0016] As a further limitation of this utility model, it also includes a locking seat for use in conjunction with the locking seat, the locking seat having a guide slope adapted to the pressing slope and a guide plane adapted to the pressing plane.

[0017] This utility model also discloses a grain warehouse sealing window, including a window frame and a window sash that can be opened and closed and installed on the window frame, and also includes a lock mounted on the window frame and a lock seat mounted on the window sash; the lock is the lock as described above, and the lock seat corresponds to the position of the actuating end of the actuating component in the lock.

[0018] By adopting the above-mentioned technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows: (1) This utility model provides a more efficient, economical, and reliable power transmission solution. The core innovation of this utility model lies in the use of a linear motion reversing mechanism as the transmission component. This mechanism is essentially a "linear-oscillating-linear" system, which efficiently realizes the conversion of linear motion direction through the partial oscillation of the oscillating plate. This design has three advantages: High thrust output: This mechanism can directly interface with linear actuators (such as electric or hydraulic actuators). These actuators themselves can provide thrust output far exceeding that of traditional rotary motors, easily meeting the enormous clamping force required to compress sealing strips; Low system cost and energy consumption: The linear drive has a simple structure and its cost is lower than that of the "motor + gear and rack" combination while providing the same thrust. It also requires less drive power, thus significantly reducing equipment cost and operating energy consumption. High reliability: Linear drives are less prone to motor burnout due to overload or jamming, significantly improving operational reliability.

[0019] (2) The present invention has a ball bearing between the contact surface of the swing plate and the frame. This design transforms the traditional surface contact sliding friction into point contact rolling friction, which effectively reduces the frictional resistance and wear during the transmission process, ensures the smooth and sensitive operation of the lock, and extends its service life.

[0020] (3) The end of the actuator (lock tongue) of this utility model adopts an optimized composite surface design, that is, it has both a pressing bevel and a pressing plane; During the locking process, the pressing slope of the latch interacts with the corresponding guide slope on the lock seat, generating a component force perpendicular to the direction of the latch movement. This component force continuously pushes the window sash against the window frame, compressing the sealing strip and achieving a reliable "wedge effect" and progressive compression. Once locked in place, the pressing plane of the latch fits tightly against the guide plane of the lock seat, providing a large area of ​​normal support. This design not only makes the pressing force distribution more uniform and avoids stress concentration, but more importantly, it forms a stable surface contact retaining mechanism that effectively prevents the window sash from rebounding after external disturbances or relaxation of the sealing strip stress, ensuring long-term stability and reliability of the sealing performance. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the lock in the locked state in an embodiment of the present invention; Figure 2 This is a structural schematic diagram of the lock in the locked state from another perspective in an embodiment of this utility model; Figure 3 This is a structural schematic diagram of the lock in the locked state from a third-person perspective in an embodiment of this utility model; Figure 4 This is a schematic diagram of the lock in the unlocked state in an embodiment of this utility model; Figure 5 This is a schematic diagram of the application structure of the lock on the window frame in an embodiment of this utility model; Figure 6 This is a cross-sectional view showing the structural relationship between the locking tongue and the locking seat in an embodiment of this utility model. In the diagram: 1. Frame; 2. Transmission components; 3. Actuation components; 4. Lock seat; 5. Window frame; 6. Window sash; 101. Push-pull rod; 102. Swing plate; 103. Bushing; 104. First guide groove; 105. Second guide groove; 106. First pin; 107. Second pin; 108. First elongated hole; 201. Slide rail; 202. Locking tongue; 203. Pressing ramp; 204. Pressing plane; 301. Guide ramp; 302. Guide plane. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0024] This embodiment provides a lock with a linear motion reversing mechanism, which is suitable for grain warehouse sealing windows or grain warehouse insulated airtight doors with strict sealing performance requirements.

[0025] like Figures 1 to 5 As shown, the lock includes a frame 1 and a transmission component 2 and an actuation component 3 mounted on the frame 1. The transmission component 2 and the actuation component 3 are linked. It usually also includes a lock seat 4 for use. When locking is required, the transmission component 2 drives the actuation component 3 to extend into the lock seat 4; when unlocking is required, the transmission component 2 drives the actuation component 3 to retract from the lock seat 4.

[0026] The transmission component 2 constitutes a linear motion reversing mechanism, which can efficiently convert the linear driving force of linear actuators such as electric actuators into linear output force for driving the linear motion of the actuator 3. The transmission component 2 includes a push-pull rod 101 and a swing plate 102 that are linked together. The push-pull rod 101 is slidably mounted on the frame 1. In this embodiment, the push-pull rod 101 is slidably mounted on the frame 1 through a bushing 103 to achieve precise guidance with low friction. As the input part of the transmission component 2, the push-pull rod 101 is used to connect to the output end of a linear actuator (such as an electric actuator or a hydraulic actuator) to receive the linear driving force. It should be noted that the push-pull rod 101 can be directly connected to the linear actuator, or it can be indirectly connected to the linear actuator through a connecting rod or other linkage components.

[0027] The swing plate 102 is rotatably mounted on the frame 1. In this embodiment, the swing plate 102 has a triangular plate-like structure, with one corner rotatably connected to the frame 1 and the other two corners slidably connected to the frame 1. As the output part of the transmission component 2, it is used to convert the linear driving force received by the push-pull rod 101 into a linear output force in a different direction, and act on the actuator 3 to drive the actuator 3 to perform an extension or retraction movement.

[0028] Furthermore, such as Figures 1 to 4As shown, the frame 1 has a first guide groove 104 and a second guide groove 105. The length direction of the first guide groove 104 is consistent with the direction of the linear driving force, and the length direction of the second guide groove 105 is consistent with the direction of the linear output force. One corner of the swing plate 102 is rotatably connected to the frame 1 via a shaft; the second corner is slidably engaged with the first guide groove 104 via a first pin 106, and is linked with the push-pull rod 101 via the first pin 106. Specifically, a first elongated hole 108 is provided at the second corner of the swing plate 102. The bottom end of the first pin 106 is fixedly connected to the push-pull rod 101, and extends vertically upward through the first guide groove 104 and into the first elongated hole 108 of the swing plate 102. The third corner is slidably engaged with the second guide groove 105 via the second pin 107, and is linked to the actuating component 3 via the second pin 107. Specifically, a second elongated hole is provided at the triangular position of the swing plate 102. The top of the second pin 107 is connected to the actuating component 3, and extends vertically downward through the second elongated hole of the swing plate 102 into the second guide groove 105. Since the second elongated hole is blocked by the locking tongue 202, it cannot be observed in the attached drawing.

[0029] To reduce friction, multiple ball bearings are embedded between the contact surfaces of the swing plate 102 and the frame 1.

[0030] The actuator 3 includes a slide rail 201 fixedly mounted on the frame 1 and a locking tongue 202 slidably mounted on the slide rail 201. The length direction of the slide rail 201 is consistent with the direction of the linear output force. The front end of the locking tongue 202 adopts a special surface design, such as... Figure 3 As shown, a pressing inclined surface 203 and a pressing plane 204 are formed sequentially from top to bottom.

[0031] like Figure 6 As shown, the lock seat 4 is fixedly installed at the corresponding position of the window sash 6, and is provided with a guide slope 301 and a guide plane 302 that are adapted to the surface of the lock tongue 202.

[0032] Working process: When it is necessary to lock the window sash 6, the push-pull rod 101 moves linearly along the direction of the first guide groove 104 under the action of linear driving force. The push-pull rod 101 drives the swing plate 102 to swing counterclockwise around its axis through the first pin 106. The swing plate 102 slides in the second guide groove 105 through the second pin 107, converting the linear driving force into a linear output force in a different direction (in this embodiment, the linear driving force is perpendicular to the linear output force), driving the locking tongue 202 to extend along the slide rail 201; In the initial locking phase, the pressing bevel 203 of the latch 202 first contacts the guide bevel 301 of the lock seat 4. The interaction of the bevels generates a component force perpendicular to the direction of movement of the latch 202, gradually pressing the window sash 6 against the window frame 5 and compressing the sealing strip. When the latch 202 continues to extend to the fully locked position, the pressing plane 204 is completely in contact with the guide plane 302 of the lock seat 4. At this time, the window sash 6 is completely compressed, the sealing strip reaches the designed compression amount, and a reliable airtight seal is formed.

[0033] The unlocking process is the opposite. Under the action of linear driving force, the push-pull rod 101 moves in the opposite direction, and through the first pin 106, it drives the swing plate 102 to swing clockwise around its axis, driving the lock tongue 202 to retract along the slide rail 201 and release the pressure on the window sash 6.

[0034] This utility model also discloses a sealed window for a grain warehouse, including a window frame 5, a window sash 6 that is openable and closable and mounted on the window frame 5, and a locking mechanism, wherein the locking mechanism adopts the lock described above. Figure 5 As shown, the main structure of the lock is assembled on the window frame 5 via the frame 1, and the lock base 4 is correspondingly embedded in the window sash 6. (Refer to...) Figure 6 The position of the lock seat 4 corresponds to the position of the execution end of the actuator 3.

[0035] It should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features. 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 lock, comprising a frame and a transmission component and an actuation component mounted on the frame, characterized in that, The transmission component is configured as a linear motion reversing mechanism, which is equipped with an input section for receiving linear driving force and an output section for outputting linear output force to drive the actuator to perform extension or retraction movements; wherein the direction of the linear output force output by the output section is different from the direction of the linear driving force received by the input section.

2. The lock according to claim 1, characterized in that, The transmission component includes: A push-pull rod, which is slidably mounted on the frame, serves as the input section for connection with a linear driver to receive linear driving force; A swing plate, which is rotatably mounted on the frame and linked with the push-pull rod, so that the push-pull rod drives the swing plate to swing around its rotation center; The swing plate is linked with the actuating component and serves as the output unit to convert the linear driving force received by the push-pull rod into a linear output force that acts on the actuating component.

3. The lock according to claim 2, characterized in that, The frame is provided with a first guide groove that is consistent with the direction of the linear driving force and a second guide groove that is consistent with the direction of the linear output force. The swing plate is provided with a first pin that is slidably assembled with the first guide groove, and a second pin that is slidably assembled with the second guide groove.

4. The lock according to claim 3, characterized in that, The swing plate is provided with a first elongated hole and a second elongated hole; the first pin is slidably assembled in the first elongated hole, and the second pin is slidably assembled in the second elongated hole.

5. The lock according to claim 4, characterized in that, A first contact ball is provided between the contact surface of the swing plate and the frame to reduce friction.

6. The lock according to any one of claims 1-5, characterized in that, The actuating end of the actuating component has a clamping bevel.

7. The lock according to claim 6, characterized in that, The actuating component includes a slide rail mounted on the frame and a locking tongue slidably mounted on the slide rail; the length direction of the slide rail is consistent with the direction of the linear output force. The latch has a pressing bevel.

8. The lock according to claim 7, characterized in that, The latch also has a pressing plane, which is located at the front of the bottom surface of the latch and connects to the bottom end of the pressing slope.

9. The lock according to claim 8, characterized in that, It also includes a locking seat for use in conjunction with the locking seat having a guide ramp adapted to the clamping ramp and a guide plane adapted to the clamping plane.

10. A sealed window for a grain warehouse, comprising a window frame and a window sash operablely mounted on the window frame, characterized in that, It also includes a lock mounted on the window frame and a lock seat mounted on the window sash; the lock is the lock as described in any one of claims 1-9, and the lock seat corresponds to the position of the actuating end of the actuating component in the lock.

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