Self-locking transmission shell structure and door and window handle structure using same

Abstract

The application discloses a self-locking transmission shell structure and a door and window handle structure using the same. The self-locking transmission shell structure comprises a shell, a transmission assembly, a locking hook and a supporting piece. The transmission assembly comprises a transmission rack and a transmission gear meshing with one side of the transmission rack. The locking hook is rotatably connected to the upper end of the shell. The upper end of the supporting piece is connected with the locking hook, and the lower end is rotatably connected with the shell. The upper end of the transmission rack is provided with a limiting piece, and the locking hook is provided with a limiting groove. When the transmission rack is lifted to a first predetermined position, the limiting piece is located in the limiting groove. When the transmission rack is lowered to a second predetermined position, the limiting piece is separated from the limiting groove. Through cooperation of the limiting piece, the limiting groove and the elastic piece, the transmission rack can be moved to the predetermined position, the door and window handle can be positioned and kept in place without rebounding in the open lifting state, the handle movement is slowed down in the lowering process, the handle is prevented from rotating at a high speed, and the door and window will not be attenuated even if they are frequently used.

Description

Technical Field

[0001] The present invention relates to the technical field of doors and windows, and in particular to a self-locking transmission housing structure and a door and window handle structure using the same. Background Art

[0002] In modern commercial and residential buildings, lifting and sliding doors and windows have become the preferred decoration solution for many owners. They use the principle of leverage to control the lifting and lowering of the door and window sashes by rotating the handle. It is important to note that in the raised state, the handle must have sufficient self-locking force to overcome the directional pull of the door and window sash's own weight to ensure that the handle does not rebound. There are two common solutions on the market, but both have some problems:

[0003] The first method is to achieve self-locking by increasing the frictional self-locking force of the handle. However, this frictional self-locking force will gradually weaken after frequent use, increasing the operating force. As a result, the handle cannot be held in place when the door or window is raised, and may even rebound.

[0004] The second method is to add a damping spring to the transmission rod and use the elastic force of the damping spring to overcome the weight of the door or window. However, when the door or window is lowered and closed, the damping spring needs to be compressed, which increases the elastic force of the damping spring and causes the handle to not be fully in place when locked. Summary of the Invention

[0005] The purpose of the present invention is to provide a self-locking transmission housing structure and a door and window handle structure using the same, aiming to solve the problem that door and window handles rebound after frequent use and cannot be fully locked into place.

[0006] The locking mechanism is configured to lock the locking cam of the vehicle when the locking cam is engaged with the gear train, and the locking mechanism can be adjusted accordingly when the locking cam is engaged with the gear train.

[0007] Furthermore, a transmission through hole is provided on a side of the transmission rack close to the lock hook member, a transmission shaft is provided on the transmission through hole, and the limiting member is a roller sleeve, which is rotatably provided on the transmission shaft.

[0008] Furthermore, the limiting groove is provided on one side of the locking hook member, and an arc-shaped transition section is provided on the inner side wall of the limiting groove close to the supporting member.

[0009] Furthermore, when the transmission rack is lifted to a first predetermined position, the upper end of the support member is tilted toward a side close to the transmission rack; when the transmission rack is lowered to a second predetermined position, the support member is parallel to the vertical direction.

[0010] Furthermore, when the transmission rack descends to the second predetermined position, the limiting member is located below the limiting groove, and the transmission rack has a predetermined descending space.

[0011] Furthermore, a limiting portion is provided at the upper end of the shell, and the limiting portion is located above the lock hook member. When the transmission rack is lifted to the first predetermined position and continues to lift the predetermined rising space, the lock hook member abuts against the limiting portion.

[0012] Furthermore, it also includes a rotating shaft component, which can be rotatably connected to the shell, and a through hole is provided in the rotating shaft component. The end of the support component away from the locking hook component is axially inserted into the through hole and can move axially in the through hole.

[0013] Furthermore, the elastic member is a spring, a supporting portion is provided on the surface of the support member, the spring is sleeved on the surface of the support member, and one end of the spring is supported on the supporting portion, and the other end is supported on the rotating shaft member.

[0014] Furthermore, the shell is provided with a receiving groove, the receiving groove is provided with a first through hole, the transmission gear is provided in the receiving groove, the transmission gear is provided with a second through hole, and the first through hole corresponds to the second through hole in position.

[0015] An embodiment of the present invention further provides a door and window handle structure, comprising a handle and the self-locking transmission housing structure as described above.

[0016] The embodiment of the present invention provides a self-locking transmission housing structure and a door and window handle structure using the same. The self-locking transmission housing structure includes a housing and a transmission assembly, a lock hook, and a support member disposed within the housing. The transmission assembly includes a transmission rack disposed in a vertical direction and a transmission gear meshed with one side of the transmission rack. The lock hook member is rotatably connected to the upper end of the housing. The upper end of the support member is rotatably connected to the lock hook member. The lower end of the support member is rotatably connected to the housing. The support member is provided with an elastic member. The upper end of the transmission rack is provided with a limit member, and the lock hook member is provided with a limit slot. When the transmission rack is raised to a first predetermined position, the limit member is located in the limit slot. When the transmission rack is lowered to a second predetermined position, the limit member is disengaged from the limit slot. The present invention, through the cooperation of the limit member, the limit slot, and the elastic member, enables the transmission rack to move to a predetermined position, so that the door and window handle is in place and does not rebound when the door and window are opened and raised, and is retained in position. The movement of the handle is slowed down during the lowering process to prevent the handle from rotating at high speed. Moreover, the door and window will not attenuate due to frequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of a self-locking transmission housing structure provided by an embodiment of the present invention;

[0019] Figure 2 An exploded view of a self-locking transmission housing structure provided by an embodiment of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of part A;

[0021] Figure 4 for Figure 2 Enlarged view of part B;

[0022] Figure 5 A cross-section of a self-locking transmission housing structure provided by an embodiment of the present invention Figure 1 ;

[0023] Figure 6 A cross-section of a self-locking transmission housing structure provided by an embodiment of the present invention Figure 2 ;

[0024] Figure 7 A cross-section of a self-locking transmission housing structure provided by an embodiment of the present invention Figure 3 ;

[0025] Figure 8 This is a schematic structural diagram of a rotating shaft provided in an embodiment of the present invention.

[0026] Description of the symbols in the figure:

[0027] 10. Housing; 11. Limiting portion; 12. Accommodating groove; 121. First through hole;

[0028] 20. Transmission assembly; 21. Transmission rack; 22. Transmission gear; 221. Second through hole; 23. Limiting member; 24. Transmission through hole; 25. Transmission shaft;

[0029] 30. Lock hook; 31. Limiting groove; 32. Arc-shaped transition section;

[0030] 40. Support member; 41. Elastic member; 42. Abutting portion;

[0031] 50. Rotating shaft; 51. Via hole. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0034] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0035] It should be further understood that the term "and / or" used in the present description and appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0036] Combine Figures 1 to 4As shown, a self-locking transmission housing structure provided by an embodiment of the present invention includes a housing 10 and a transmission assembly 20, a lock hook member 30 and a support member 40 arranged in the housing 10. The transmission assembly 20 includes a transmission rack 21 arranged in a vertical direction and a transmission gear 22 meshed with one side of the transmission rack 21. The lock hook member 30 is rotatably connected to the upper end of the housing 10, the upper end of the support member 40 is rotatably connected to the lock hook member 30, and the lower end of the support member 40 is rotatably connected to the housing 10. An elastic member 41 is provided on the support member 40, a limiting member 23 is provided at the upper end of the transmission rack 21, and a limiting groove 31 is provided on the lock hook member 30; when the transmission rack 21 is lifted to the first predetermined position, the limiting member 23 is located in the limiting groove 31, and the elastic member 41 is in a normal state, so that the lock hook member 30 positions the transmission rack 21; when the transmission rack 21 is lowered to the second predetermined position, the limiting member 23 is disengaged from the limiting groove 31, and the elastic member 41 is in a compressed state, so that the lock hook member 30 is self-locking.

[0037] In this embodiment, the housing 10 is the outer portion of the self-locking transmission housing structure, typically made of a sturdy material such as metal or plastic. The housing 10 primarily protects the internal components. The transmission assembly 20 includes a transmission rack 21 and a transmission gear 22. The transmission rack 21 is typically a long, vertically extending bar with a toothed structure, used to transmit power. The transmission gear 22 meshes with the transmission rack 21 and is connected to the handle. Rotation of the handle drives the movement of the transmission rack 21. The locking hook 30 ensures that the handle does not rebound or become unstable when the door or window is raised. The locking hook 30 rotates within the housing 10, locking and unlocking the movement of the transmission rack 21. When raised, the locking hook 30 automatically locks the transmission rack 21 and unlocks when lowered, allowing the door or window to close. The upper end of the support member 40 is connected to the locking hook 30, forming a rotational joint that allows it to follow the movement of the locking hook 30. The lower end of the support member 40 is connected to the housing 10, allowing it to rotate relative to the housing 10. An elastic member 41 is fixed to the support member 40, providing additional elastic force to assist in the raising or lowering of the transmission rack 21. A limit member 23, typically a protruding structure, is provided at the upper end of the transmission rack 21. A limit slot 31 is provided on the lock hook member 30 for use with the limit member 23. When the transmission rack 21 is raised to a first predetermined position, the limit member 23 is located within the limit slot 31, allowing the lock hook member 30 to position the transmission rack 21. When the transmission rack 21 is lowered to a second predetermined position, the limit member 23 disengages the limit slot 31, unlocking the transmission rack 21. The lock hook member 30 then enters a self-locking state, allowing the door or window to close.

[0038] Furthermore, the self-locking function of the self-locking transmission housing structure enhances the safety of the door and window system. Users no longer have to worry about the door or window suddenly closing or rebounding when raised, thus reducing potential hazards. Furthermore, the self-locking transmission housing structure can withstand frequent use without malfunction or damage. The elastic member 41 on the support member 40 provides additional elastic force, reducing the user's grip when operating the handle, making operation easier and more comfortable. In its normal state, the elastic member 41 is uncompressed. In its compressed state, the elastic member 41 is compressed and generates a rebound force.

[0039] In one embodiment, a transmission through hole 24 is provided on the side of the transmission rack 21 close to the lock hook 30 , a transmission shaft 25 is provided on the transmission through hole 24 , and the limiting member 23 is a roller sleeve rotatably provided on the transmission shaft 25 .

[0040] In this embodiment, when the handle rotates, the transmission gear 22 and the transmission rack 21 engage with each other, causing the transmission rack 21 to move up and down; a transmission through hole 24 is provided on the side of the transmission rack 21 close to the lock hook member 30, and the function of the transmission through hole 24 is to guide the position of the transmission shaft 25 and provide a method for connecting the transmission rack 21 and the transmission shaft 25; the transmission shaft 25 is an axis connected to the transmission rack 21 through the transmission through hole 24, and the roller sleeve is a protruding structure, similar to a roller; the main function of the roller sleeve is to provide rolling support on the transmission rack 21 (that is, when the transmission rack 21 slides, it drives the roller sleeve to slide in the limit groove 31), and at the same time, when it moves to a certain position, the limit member 23 can interact with the lock hook member 30 or other limiting structures to control the position of the transmission rack 21. The roller sleeve is usually made of a wear-resistant material, such as plastic or metal; the roller sleeve rotates freely on the transmission shaft 25, thereby reducing the friction of the transmission rack 21 and improving the smoothness of movement; when the transmission rack 21 moves to a certain position, the limit member 23 (roller sleeve) can interact with other structures, such as the locking hook member 30, to lock the transmission rack 21 in the raised position, thereby realizing a self-locking function.

[0041] Furthermore, the design of the roller sleeve helps to reduce the friction of the transmission rack 21, thereby reducing the force required for operation and improving the smoothness of operation; the roller sleeve is usually made of wear-resistant material to increase its durability, so that it can withstand long-term use without being easily worn or damaged.

[0042] In one embodiment, the limiting groove 31 is provided on one side of the lock hook member 30 , and an arc-shaped transition section 32 is provided on the inner side wall of the limiting groove 31 close to the support member 40 .

[0043] In this embodiment, the stop slot 31 is a special structure provided on one side of the lock hook 30, typically in the form of a groove. The arcuate transition section 32 is a portion of the stop slot 31, located on the inner sidewall of the stop slot 31 and having an arcuate or curved shape, providing a smooth transition. The arcuate transition section 32 allows the stop member 23 to smoothly enter and lock within the stop slot 31 when the transmission rack 21 moves into the stop slot 31. The arcuate transition section 32 is located below the opening of the stop slot 31, i.e., toward the support member 40. The main function of the stop slot 31 is to lock the transmission rack 21 when it reaches a specific position, thereby ensuring that the door or window remains open or closed in the desired position. The lock hook 30 typically interacts with the stop slot 31. When the transmission rack 21 reaches the target position, the stop member 23 can enter the stop slot 31, locking the transmission rack 21 and preventing it from further movement.

[0044] Furthermore, multiple limit slots 31 can be designed to allow doors and windows to be locked in different positions, thereby providing more control options; combined with mechanical or electronic devices, an automatic unlocking function can be realized so that doors and windows can be automatically unlocked and closed when needed; and by adding sensors and feedback devices, the position of the transmission rack 21 can be monitored and controlled, thereby further improving the intelligence and safety of the self-locking transmission housing structure.

[0045] Combine Figures 5 to 7 As shown, in one embodiment, when the transmission rack 21 is lifted to the first predetermined position, the upper end of the support member 40 is inclined toward the side close to the transmission rack 21; when the transmission rack 21 is lowered to the second predetermined position, the support member 40 is parallel to the vertical direction.

[0046] In this embodiment, when the transmission rack 21 is raised to the first predetermined position (eg Figure 5 As shown, the same below), the upper end of the support member 40 is inclined toward the side close to the transmission rack 21, that is, the inclination angle is relatively large; when the transmission rack 21 drops to the second predetermined position (as Figure 6 , the same below), the support member 40 is parallel to the vertical direction, that is, the inclination angle is reduced or is zero. The change in the inclination angle of the support member 40 plays an important role in stability. When the transmission rack 21 is raised to the first predetermined position, the inclination of the support member 40 helps to support the stability of the doors and windows in a high position and prevent the doors and windows from tilting or shaking. The change in the inclination angle between the support member 40 and the transmission rack 21 can also reduce the friction of the support member 40 on the transmission rack 21, which helps to reduce the force required when operating the doors and windows and improve the smoothness of operation. When the support member 40 is parallel to the vertical direction, it helps to achieve a self-locking function when the doors and windows reach the second predetermined position, ensuring that the doors and windows are firmly locked when closed, thereby enhancing safety.

[0047] Furthermore, the tilt angle can be adjusted as needed to adapt to the size and weight of different doors and windows, which can increase the flexibility of the system; combined with sensors and electronic control, the tilt angle of the support 40 can be automatically adjusted. For example, in strong winds or emergencies, the system can automatically adjust to improve the stability of doors and windows.

[0048] In one embodiment, when the transmission rack 21 descends to the second predetermined position, the limiting member 23 is located below the limiting slot 31 , and the transmission rack 21 has a predetermined descending space.

[0049] In this embodiment, when the transmission rack 21 descends to the second predetermined position, the limiting member 23 is located below the limiting groove 31; the transmission rack 21 has a predetermined descending space, that is, after descending to the second predetermined position, there is still a certain space, and the transmission rack 21 can continue to descend a certain distance (such as Figure 7 The predetermined lowering space ensures a completely sealed closure of the door and window. Once the transmission rack 21 reaches the second predetermined position, the door and window can continue to descend a certain distance, ensuring that the door and window sealing strips are completely in contact with the door frame, providing a better seal. This is crucial for providing excellent sound insulation, heat insulation, and waterproofing, contributing to improved indoor comfort and energy efficiency. The combination of the stopper 23 and the stopper groove 31 ensures that the door and window are locked in the correct position and prevented from being over-closed or over-opened, improving the reliability of the door and window system and reducing the risk of damage or failure.

[0050] In one embodiment, a limiting portion 11 is provided at the upper end of the housing 10 , and the limiting portion 11 is located above the lock hook 30 . When the transmission rack 21 is lifted to the first predetermined position and continues to lift the predetermined lifting space, the lock hook 30 abuts against the limiting portion 11 .

[0051] In this embodiment, the stopper 11 is located at the upper end of the housing 10, typically above the hook member 30. The stopper 11 provides a stop or a stop point when the transmission rack 21 reaches the first predetermined position and continues to rise to a predetermined height. This stopper interacts with the hook member 30 to limit the rise of the transmission rack 21. The stopper 11 ensures that the transmission rack 21 stops rising after reaching a specific height, helping to control the opening height of doors and windows to meet safety, ventilation, or other specific requirements. The hook member 30 is chamfered around its perimeter to ensure a smooth transition with the stopper 11 during rotation. Without the chamfer, the hook member 30 could become stuck with the stopper 11 during rotation, preventing it from rotating properly. When the transmission rack 21 is in the first predetermined position, the stopper 31 opens toward the transmission rack 21. When the transmission rack 21 is in the second predetermined position, the stopper 31 opens toward the transmission gear 22.

[0052] Combine Figure 8 As shown, in one embodiment, a rotating shaft 50 is further included, which can be rotatably connected to the housing 10. A through hole 51 is provided in the rotating shaft 50. The end of the support member 40 away from the lock hook member 30 is axially inserted into the through hole 51 and can move axially in the through hole 51.

[0053] In this embodiment, the pivot member 50 is rotatably connected to the housing 10. Its primary function is to provide axial movement. The through hole 51 is an opening located in the pivot member 50, typically circular or oval in shape. The through hole 51 allows one end of the support member 40 to be inserted therein, and the support member 40 can move axially within the through hole 51. The pivot member 50 provides a support point for the support member 40, ensuring that the door or window can be rotated or opened. The axial mobility of the support member 40 provides greater flexibility for the door or window, allowing adjustment to accommodate different opening angles or heights.

[0054] In one embodiment, the elastic member 41 is a spring, and a supporting portion 42 is provided on the surface of the support member 40 . The spring is sleeved on the surface of the support member 40 , and one end of the spring is supported on the supporting portion 42 , and the other end is supported on the rotating shaft 50 .

[0055] In this embodiment, the elastic member 41 is usually a spring, and its function is to provide elastic support and restoring force; one end of the spring is connected to the abutting portion 42, and the other end is connected to the rotating shaft member 50. Through this connection method, elastic support of the support member 40 is achieved. The abutting portion 42 is a part of the surface of the support member 40, usually a protruding part or surface structure. One end of the spring abuts against the abutting portion 42 to ensure the connection between the spring and the support member 40. The spring provides elastic support to the support member 40, so that the support member 40 can have a certain elastic support in the door and window system. The spring has a restoring force. When the door and window system is subjected to external force or movement, the spring can return to its original state to ensure the normal operation of the door and window system. The spring can also play a shock-absorbing role during the movement of the door and window system, reducing the impact force, thereby extending the service life of the system.

[0056] In one embodiment, a receiving groove 12 is provided on the housing 10, a first through hole 121 is opened on the receiving groove 12, a transmission gear 22 is provided in the receiving groove 12, a second through hole 221 is opened on the transmission gear 22, and the first through hole 121 and the second through hole 221 are positioned correspondingly.

[0057] In this embodiment, the receiving slot 12 is typically located in an appropriate position within the housing 10 to accommodate the transmission gear 22. The first through-hole 121 is a hole formed in the receiving slot 12 to support and position the transmission gear 22. The first through-hole 121 corresponds to the position of the receiving slot 12 to ensure proper installation and movement of the transmission gear 22. The transmission gear 22 is a key component in the door and window system, typically used to control the raising and lowering of the door and window. The second through-hole 221 is a hole formed in the transmission gear 22 to mate with the first through-hole 121. Through the relative positioning of the receiving slot 12, the first through-hole 121, and the second through-hole 221, the transmission gear 22 can be accurately positioned and secured within the housing 10. The accurate positioning of the transmission gear 22 helps improve transmission efficiency, ensures smooth power transmission, and thus reduces the force required to operate the door and window.

[0058] An embodiment of the present invention further provides a door and window handle structure, comprising a handle and the self-locking transmission housing structure as described above.

[0059] In this embodiment, the handle is the operating part of the door and window system, usually located inside or outside the door and window, for users to operate by hand to open or close the door and window. The design of the handle makes the door and window easy to open and close, providing a user-friendly operating experience. The self-locking transmission housing structure plays a key role in the operation of the door and window system, controlling the lifting and lowering of the door and window, as well as the realization of the self-locking function. The key advantage of the self-locking transmission housing structure is that it provides a self-locking function, ensuring that the door and window remain in a specific position when opened or closed without instability or rebound, thereby improving the safety and sealing of the door and window. By using elements such as springs, the self-locking transmission housing structure can also reduce the force required by the user to operate the door and window, providing an easier operating experience.

[0060] The various embodiments are described in a progressive manner throughout the specification. Each embodiment focuses on the differences from the other embodiments, and reference can be made to the common and similar parts between the various embodiments. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0061] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or article comprising a series of elements may include not only those elements, but also other elements not explicitly listed, or may also include elements inherent to such process, method, article or article. In the absence of further restrictions, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or article comprising the element.

Claims

1. A self-locking transmission housing structure, characterized in that: include: A housing and a transmission assembly, a lock hook and a support member arranged in the housing, the transmission assembly including a transmission rack arranged in a vertical direction and a transmission gear meshing with one side of the transmission rack, the lock hook member is rotatably connected to the upper end of the housing, the upper end of the support member is rotatably connected to the lock hook member, and the lower end of the support member is rotatably connected to the housing, an elastic member is provided on the support member, a limiting member is provided at the upper end of the transmission rack, and a limiting groove is provided on the lock hook member; When the transmission rack is lifted to a first predetermined position, the limiting member is located in the limiting groove, and the elastic member is in a normal state, so that the lock hook member positions the transmission rack; when the transmission rack is lowered to a second predetermined position, the limiting member is disengaged from the limiting groove, and the elastic member is in a compressed state, so that the lock hook member self-locks.

2. The self-locking transmission housing structure according to claim 1, characterized in that: A transmission through hole is provided on one side of the transmission rack close to the lock hook member, a transmission shaft is provided on the transmission through hole, and the limiting member is a roller sleeve, which is rotatably provided on the transmission shaft.

3. The self-locking transmission housing structure according to claim 2, characterized in that: The limiting groove is arranged on one side of the locking hook component, and an arc-shaped transition section is arranged on the inner side wall of the limiting groove close to the supporting component.

4. The self-locking transmission housing structure according to claim 1, characterized in that: When the transmission rack is lifted to a first predetermined position, the upper end of the support member is inclined toward a side close to the transmission rack; when the transmission rack is lowered to a second predetermined position, the support member is parallel to the vertical direction.

5. The self-locking transmission housing structure according to claim 1, characterized in that: When the transmission rack descends to the second predetermined position, the limiting member is located below the limiting groove, and the transmission rack has a predetermined descending space.

6. The self-locking transmission housing structure according to claim 1, characterized in that: A limiting portion is provided at the upper end of the shell, and the limiting portion is located above the lock hook member. When the transmission rack is lifted to a first predetermined position and continues to lift a predetermined lifting space, the lock hook member abuts against the limiting portion.

7. The self-locking transmission housing structure according to claim 1, characterized in that: It also includes a rotating shaft component, which is rotatably connected to the shell, and a through hole is provided in the rotating shaft component. The end of the support component away from the locking hook component is axially inserted into the through hole and can move axially in the through hole.

8. The self-locking transmission housing structure according to claim 7, characterized in that: The elastic member is a spring. A supporting portion is provided on the surface of the supporting member. The spring is sleeved on the surface of the supporting member. One end of the spring is supported on the supporting portion, and the other end is supported on the rotating shaft.

9. The self-locking transmission housing structure according to claim 1, characterized in that: The housing is provided with a receiving groove, the receiving groove is provided with a first through hole, the transmission gear is provided in the receiving groove, the transmission gear is provided with a second through hole, and the first through hole corresponds to the second through hole in position.

10. A door and window handle structure, characterized in that: It comprises a handle and a self-locking transmission housing structure as claimed in any one of claims 1 to 9.

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