Large opening and closing handle structure applied to door and window lock

Abstract

A large opening and closing handle structure applied to a door and window lock comprises a shell, a hole groove is formed in the front face of the shell, a transmission groove is formed in the back face of the shell, the hole groove is communicated with the transmission groove through a transmission hole, a handle is arranged in the hole groove, and a hinge part hinged to the shell is arranged at one end of the handle. A transmission groove is formed in the outer side of the shell, a spring bolt and a transmission structure used for being in linkage with the spring bolt are arranged in the transmission groove, a spring bolt inlet and outlet communicated with the transmission groove is formed in the outer side of the shell, the transmission structure comprises a transmission piece in linkage with the spring bolt, a transmission tooth part is arranged at one end of the transmission piece, and a transmission gear meshed with the transmission tooth part is arranged on the hinge part. The transmission gear and the transmission part are matched to convert the swing angle motion of the handle into linear motion, the action space needed by the transmission gear is small, the large opening angle effect of the handle can be achieved in the effective space, finger operation is facilitated, meanwhile, the probability that fingernails are scratched is reduced, and the experience feeling of a user is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a large opening and closing handle structure applied to door and window locks. Background Technology

[0002] Referring to Chinese Patent No. 2022224689694, existing door and window locks include a lock body, which includes a front panel with a slot in the center. The slot includes a base plate opposite to the front panel, and a first locking mechanism is mounted on the base plate. A handle is hinged below the slot. The first locking mechanism includes a driving block and a driven block, both axially connected to the base plate of the slot, with an engagement portion between them. A drive block on the handle partially passes through the base plate of the slot and abuts against the driving block of the first locking mechanism. When the handle is flipped, the drive block rotates with it, causing the driving block to move, which in turn moves the driven block. When both the driving and driven blocks rotate simultaneously, the opening between them widens, allowing the first locking mechanism to separate from the lock hook, thus unlocking the door or window. When the external force disappears, the tension spring causes the driving block and the driven block to move closer together, thereby narrowing the opening between them and achieving the locking function.

[0003] However, in this patent, due to the size limitation of the lock body, there is no space inside the lock body for the drive block to rotate significantly. When the handle is turned, the drive block quickly presses against the active block of the first locking mechanism and drives the active block of the first locking mechanism to complete the unlocking action. This results in a small overall opening angle of the handle, making it difficult for fingers to operate and easily scratching fingernails, resulting in a poor user experience. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a large opening and closing handle structure for use in door and window locks.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A large-opening handle structure for door and window locks includes a housing. The front of the housing has a slot, and the back has a transmission groove. The slot and the transmission groove are connected by a transmission hole. A handle is provided in the slot. One end of the handle has a hinge part that is hinged to the housing. The transmission groove has a latch and a transmission structure for linkage with the latch. The outer side of the housing has a latch inlet and outlet that communicate with the transmission groove. The characteristic feature is that the transmission structure includes a transmission component that is linked to the latch. One end of the transmission component extends from the transmission hole into the slot. One end of the transmission component has a transmission tooth. The hinge part has a transmission gear that meshes with the transmission tooth.

[0007] In this embodiment, the transmission gear, hinge, and handle are integrally formed.

[0008] In this embodiment, the vertical length of the slot is greater than the vertical length of the handle, and a reserved space is left between the bottom surface of the other end of the handle and the bottom surface of the slot to facilitate the user's fingers to be inserted into the slot.

[0009] In this embodiment, the transmission groove is provided with a latch spring for driving the latch tongue to extend out of the outer shell, and the transmission structure also includes a rack spring for driving the transmission component to reset.

[0010] In this embodiment, a steering component is provided in the transmission groove. The steering component has a rotating shaft, a steering linkage, and a steering drive for driving the lock tongue to retract into the transmission groove. The rotating shaft is hinged to the outer shell. The other end of the transmission component has a clearance opening for avoiding the rotating shaft and a linkage opening for linking the steering linkage to allow the steering component to swing around the rotating shaft. The steering linkage is movably fitted in the linkage opening. The lock tongue has a mating slot. The steering component is located in the mating slot and can swing around the rotating shaft as the center of rotation within the mating slot.

[0011] In this embodiment, the other end of the transmission component is provided with a driving inclined surface for pulling the latch back into the transmission groove. The end of the driving inclined surface away from the latch inlet and outlet is inclined upward and away from the latch inlet and outlet. The latch is provided with a first linkage inclined surface that slides with the driving inclined surface.

[0012] In this embodiment, the other end of the transmission component is provided with a drive structure for pulling the latch back into the transmission groove. The drive structure includes a drive column, and the latch is provided with a second linkage inclined surface that slides with the drive column. The end of the second linkage inclined surface away from the latch inlet and outlet is inclined upward and away from the latch inlet and outlet.

[0013] In this embodiment, the other end of the transmission component is provided with a drive protrusion for pulling the lock tongue back into the transmission groove, and the lock tongue is provided with a linkage groove for the drive protrusion to be inserted into. The end of the linkage groove away from the lock tongue inlet and outlet is inclined upward and away from the lock tongue inlet and outlet.

[0014] In this embodiment, the transmission component and the locking tongue are linked by a pull rope. The transmission groove is provided with a reversing component for changing the direction of the pull rope. One end of the pull rope is connected to the locking tongue, and the other end is connected to the transmission component after being reversed by the reversing component.

[0015] In this embodiment, the other end of the transmission component is provided with a spring-loaded driving tooth segment, the locking tongue is provided with an elastically engaging tooth segment, and the transmission groove is provided with a linkage gear that causes the transmission component to pull the locking tongue back. The linkage gear is hinged to the outer shell, and the linkage gear meshes with both the spring-loaded driving tooth segment and the elastically engaging tooth segment.

[0016] The beneficial effects of this utility model are as follows: The handle of this utility model is equipped with a transmission gear, and a transmission component meshing with the transmission gear is provided in the transmission groove. When the handle is flipped to unlock, the handle can synchronously drive the transmission gear to rotate, so that the transmission gear synchronously drives the transmission component to move, thereby controlling the locking tongue to perform the unlocking action. The above structure converts the swing angle motion of the handle into linear motion through the cooperation between the transmission gear and the transmission component. The transmission gear requires little operating space, which allows the handle to achieve a large opening angle within an effective space, facilitating finger operation and reducing the chance of fingernail scratches, effectively improving the user experience. In addition, the reserved space further improves the convenience of user operation of the handle, further reduces the chance of fingernail scratches, and further enhances the user experience. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is the front view of Example 1;

[0019] Figure 2 This is a side view of Example 1;

[0020] Figure 3 This is an exploded view of Example 1;

[0021] Figure 4 This is an exploded view of the transmission and steering components in Example 1;

[0022] Figure 5 This is a diagram of the internal structure of Example 1;

[0023] Figure 6 This is a schematic diagram illustrating the movement of the steering component, locking tongue, and transmission component from the locked state to the unlocked state in Example 1.

[0024] Figure 7 This is a schematic diagram of the fit between the handle and the transmission structure in Example 1;

[0025] Figure 8 This is a schematic diagram illustrating the action of the handle changing from the locked state to the unlocked state in Example 1;

[0026] Figure 9 This is a schematic diagram showing the cooperation between the locking tongue and the transmission component in Example 2;

[0027] Figure 10This is a schematic diagram of the engagement between the locking tongue and the transmission component in Example 3;

[0028] Figure 11 This is a schematic diagram of the engagement between the locking tongue and the transmission component in Example 4;

[0029] Figure 12 This is a schematic diagram of the engagement between the locking tongue and the transmission component in Example 5;

[0030] Figure 13 This is a schematic diagram of the engagement between the locking tongue and the transmission component in Example 6. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Example 1:

[0032] Reference Figure 1-8 A large-opening handle structure for door and window locks includes a housing 1. The front of the housing 1 has a slot 11, and the back has a transmission groove 12. The slot 11 and the transmission groove 12 are connected by a transmission hole to form a transmission space. A handle 2 is provided in the slot 11, and one end of the handle 2 has a hinge part 21 that is hinged to the housing 1. The transmission groove 12 contains a latch 3 for cooperating with the lock seat, a transmission structure for linking the latch 3, and a latch spring 4 for driving the latch 3 to extend out of the housing 1. The outer side of the housing 1 has a latch inlet / outlet 13 that communicates with the transmission groove 12. The latch 3 is guided and fitted in the transmission groove 12. For example, the latch 3 has a guide groove, and the transmission groove 12 has a guide part that cooperates with the guide groove. When the latch 3 moves, it slides along the guide, so that the latch 3 extends out of the housing 1 through the latch inlet / outlet 13, or the latch 3 retracts into the transmission groove 12 from the latch inlet / outlet 13.

[0033] Furthermore, one end of the latch spring 4 is connected to the transmission groove 12, and the other end is connected to the latch 3. The latch spring 4 can use its elastic force to drive the tongue of the latch 3 through the latch inlet and outlet 13 and extend it out of the outer shell 1 to achieve the purpose of locking.

[0034] Furthermore, the transmission structure includes a transmission component 5 linked to the locking tongue 3. The transmission component 5 is guided and fitted in the transmission space. The sliding direction of the transmission component 5 is perpendicular or nearly perpendicular to the sliding direction of the locking tongue 3. One end of the transmission component 5 extends from the transmission hole into the slot 11. A transmission tooth 51 is provided on one end of the transmission component 5. A transmission gear 22 that meshes with the transmission tooth 51 is provided on the hinge part 21. In addition, a non-movable guide component 6 is provided in the transmission space. One end of the guide component 6 is provided with a positioning groove. A positioning protrusion that fits in the positioning groove and prevents the guide component 6 from moving is raised in the slot 11. The guide component 6 and the wall of the transmission space form a transmission guide groove for guiding the transmission component 5.

[0035] In this embodiment, the handle 2 is equipped with a transmission gear 22, and the transmission component 5 has a transmission tooth 51 that meshes with the transmission gear 22. When the handle 2 is flipped to unlock, the handle 2 can synchronously drive the transmission gear 22 to rotate, causing the transmission gear 22 to synchronously drive the transmission component 5 to move, thereby controlling the locking tongue 3 to perform the unlocking action. The above structure converts the angular motion of the handle 2 into linear motion through the cooperation between the transmission gear 22 and the transmission component 5. The transmission gear 22 requires little operating space, allowing the handle 2 to achieve a large opening angle within an effective space, which facilitates finger operation and reduces the chance of fingernails being scratched, effectively improving the user experience.

[0036] In a preferred embodiment, the hinge portion 21 is located on the back of the handle 2, and the transmission gear 22, the hinge portion 21, and the handle 2 are integrally formed, resulting in high structural stability. Furthermore, the hinge portion 21 is hinged to the outer casing 1 via a hinge shaft. For example, the hinge portion 21 has a first hinge hole, and the outer casing 1 has a second hinge hole corresponding to the first hinge hole. The hinge shaft fits into the first and second hinge holes, thereby hinged the handle 2 and the outer casing 1 together. Furthermore, the rotation center of the transmission gear 22 and the center of the first hinge hole are located on the same axis.

[0037] In a preferred embodiment, the vertical length of the slot 11 is greater than the vertical length of the handle 2. A reserved space is left between the bottom surface of the other end of the handle 2 and the bottom surface of the slot 11, which is conducive to the user's fingers being inserted into the slot 11. The reserved space can provide enough space for the user's fingers, thereby reducing the chance of fingernails being scratched.

[0038] In a preferred embodiment, the transmission structure further includes a rack and pinion spring 7 for driving the transmission component 5 to reset; during the process of the user pulling the handle 2 to unlock, the transmission component 5 compresses the rack and pinion spring 7; when the user releases the handle 2, the rack and pinion spring 7 unfolds, driving the transmission component 5 to slide and reset. In this embodiment, the transmission component 5 is provided with a transmission engagement part 52, one end of the rack and pinion spring 7 abuts against the transmission engagement part 52, and the other end abuts against the wall of the transmission groove 12.

[0039] In a preferred embodiment, a steering component 8 is provided in the transmission groove 12. The steering component 8 is provided with a rotating shaft 81, a steering linkage 82, and a steering drive 83 for driving the locking tongue 3 to retract into the transmission groove 12. The rotating shaft 81 is hinged to the outer shell 1. The other end of the transmission component 5 is provided with a clearance opening 531A for avoiding the rotating shaft 81 and a linkage opening 532A for linking the steering linkage 82 to allow the steering component 8 to swing around the rotating shaft 81. The steering linkage 82 is movably fitted in the linkage opening 532A. One end of the clearance opening 531A and one end of the linkage opening 532A are connected. The length direction of the clearance opening 531A is perpendicular to the length direction of the linkage opening 532A, and the length direction of the clearance opening 531A is parallel to the sliding direction of the transmission component 5. The locking tongue 3 is provided with a mating slot 30. The steering component 8 is located in the mating slot 30 and can swing around the rotating shaft 81 as the rotation center in the mating slot 30.

[0040] During the process of the user pulling the handle 2 to unlock, the transmission component 5 slides downward, causing the linkage port 532A to activate the steering linkage part 82, driving the steering component 8 to swing around the rotation center of the shaft part 81. Then, the steering drive part 83 abuts against the groove wall of the mating slot 30, pressing the latch 3 to move away from the latch inlet / outlet 13, causing the latch 3 to retract into the transmission groove 12 to achieve the purpose of unlocking. At this time, both the latch spring 4 and the rack spring 7 are in a compressed state. When the user releases the handle 2, the rack spring 7 activates the transmission component 5 to reset, causing the transmission component 5 to slide upward, causing the linkage port 532A to activate the steering linkage part 82. At this time, the steering component 8 swings back around the rotation center of the shaft part 81, allowing the steering drive part 83 to release the pressure on the latch 3. The latch spring 4 unfolds, causing the latch 3 to pass through the latch inlet / outlet 13 and extend out of the outer shell 1 to achieve the purpose of locking.

[0041] In a preferred embodiment, the latch 3 is provided with a locking mounting groove, and a locking point structure is installed in the locking mounting groove. The locking mounting groove includes a locking point guide groove 31A and a locking point linkage groove 32A. The locking point structure includes a locking point component 91 that can slide along the locking point guide groove 31A and a slanted buckle block 92 that can rotate and swing in the locking point linkage groove 32A. The sliding direction of the locking point component 91 is the same as the sliding direction of the latch 3. One end of the locking point component 91 is provided with a contact point 911, and the other end is provided with a contact spring 93 that presses against the groove wall of the transmission groove 12. The locking point component 91 is provided with a locking point recess, and a slanted buckle shaft 912 is provided in the locking point recess. The middle part of the slanted buckle block 92 is provided with a slanted buckle elongated hole 921 for the slanted buckle shaft 912 to pass through. One end of the slanted buckle block 92 is provided with a slanted buckle inclined surface 922. The locking point linkage groove 32A is provided with a latch latch inclined surface 33A.

[0042] When the window needs to be opened, the handle 2 is turned. The transmission gear 22 on the handle 2 drives the transmission component 5 to slide downward, causing the steering component 8 to rotate clockwise. The steering drive part 83 of the steering component 8 compresses the latch 3 and retracts it inward. When the latch slope 33A of the latch 3 is parallel to the inclined surface 922 of the latch, a slight collision sound will be heard. At this time, under the outward elastic force of the contact spring 93, the inclined shaft 912 on the contact 911 pushes the inclined block 92 to swing upward, so that the latch slope 33A and the inclined surface 922 are in close contact. Both are constantly subjected to the outward elastic force of the latch spring 4, and the latch 3 is retracted inward and is in the locked state. The handle 2 can be released to reset, and the window is in the open state, which can be opened easily. When the window sash is pushed to close, the contact 911 interferes with the lock seat, pushing the contact 911 inward to drive the inclined surface 922 of the inclined latch block 92 to slide out of the inclined surface 33A of the latch tongue. The latch tongue 3 is pushed outward by the latch tongue spring 4 and falls into the locking groove of the lock seat, thus locking the window sash. Example 2:

[0043] Reference Figure 9This embodiment is basically the same as the structure of embodiment 1, except that: the other end of the transmission component 5 is provided with a driving inclined surface 51B for pulling the locking tongue 3 back into the transmission groove 12. The end of the driving inclined surface 51B away from the locking tongue inlet and outlet 13 is inclined upward and away from the locking tongue inlet and outlet 13; the locking tongue 3 is provided with a first linkage inclined surface 31B that slides and cooperates with the driving inclined surface 51B. The first linkage inclined surface 31B is parallel to the driving inclined surface 51B; when the handle 2 is pulled, the transmission component 5 slides downward. During this process, the driving inclined surface 51B slides and presses the first linkage inclined surface 31B, causing the locking tongue 3 to move away from the locking tongue inlet and outlet 13 to achieve the pull-back effect, so that the tongue of the locking tongue 3 retracts into the outer shell 1, thereby achieving the purpose of unlocking; when the handle 2 is released, the transmission component 5 slides upward, and the locking tongue 3 is ejected towards the locking tongue inlet and outlet 13 by the action of the locking tongue spring 4, thereby achieving the purpose of locking. This embodiment utilizes the sliding engagement between the first linkage inclined surface 31B and the driving inclined surface 51B to achieve the unlocking purpose. The structure is reasonable and simple, which can effectively simplify the structure of door and window locks and reduce the production cost of door and window locks.

[0044] In a preferred embodiment, the transmission member 5 is provided with a protruding drive boss 52B, and the drive inclined surface 51B is the bottom surface of the drive boss 52B that is inclined; the locking tongue 3 is provided with a drive inclined groove for matching the drive boss 52B, and the first linkage inclined surface 31B is the bottom surface of the drive inclined groove that is inclined. Example 3:

[0045] Reference Figure 10 This embodiment is basically the same as the structure of embodiment 1, except that: the other end of the transmission component 5 is provided with a drive structure for pulling the latch 3 back into the transmission groove 12. The drive structure includes a drive column 52C, and there are one or more drive columns 52C. When there are multiple drive columns 52C, the multiple drive columns 52C are arranged in an upward direction away from the latch inlet and outlet 13. The latch 3 is provided with a second linkage inclined surface 31C that slides with the drive column 52C. The end of the second linkage inclined surface 31C away from the latch inlet and outlet 13 is inclined upward in a direction away from the latch inlet and outlet 13. Pulling the handle 2 causes the transmission component 5 to slide downward, which drives the drive column 52C to slide and press the second linkage inclined surface 31C, causing the latch 3 to move away from the latch inlet and outlet 13 to achieve the pull-back effect and unlocking purpose. When the handle 2 is released, the transmission component 5 slides upward, and the latch 3 is ejected towards the latch inlet and outlet 13 by the latch spring 4, achieving the locking purpose. This embodiment utilizes the sliding engagement between the second linkage inclined surface 31C and the drive column 52C to achieve the unlocking purpose. The structural design is reasonable and simple, which can effectively simplify the structure of door and window locks and reduce the production cost of door and window locks. Example 4:

[0046] Reference Figure 11 This embodiment is basically the same in structure as Embodiment 1, except that: the other end of the transmission component 5 is provided with a driving protrusion 51D for pulling the latch 3 back into the transmission groove 12, and the latch 3 is provided with a linkage inclined groove 31D for the driving protrusion 51D to be inserted into. The end of the linkage inclined groove 31D away from the latch inlet / outlet 13 is inclined upward and away from the latch inlet / outlet 13. Pulling the handle 2 causes the transmission component 5 to slide downward, which drives the driving protrusion 51D to slide and press against the groove surface of the linkage inclined groove 31D, causing the latch 3 to move away from the latch inlet / outlet 13, so as to achieve the effect of pulling back to unlock; when the handle 2 is released, the transmission component 5 slides upward, and the latch 3 is ejected towards the latch inlet / outlet 13 by the latch spring 4, thus achieving the purpose of locking. This embodiment uses the sliding cooperation between the linkage inclined groove 31D and the driving protrusion 51D to achieve the purpose of unlocking. The structure design is reasonable and simple, which can effectively simplify the structure of door and window locks and reduce the production cost of door and window locks. Example 5:

[0047] Reference Figure 12 This embodiment is basically the same in structure as Embodiment 1, except that: the transmission component 5 and the locking tongue 3 are linked by a pull rope 101, and the transmission groove 12 is provided with a reversing component 102 for reversing the pull rope 101. One end of the pull rope 101 is connected to the locking tongue 3, and the other end is connected to the transmission component 5 after being reversed by the reversing component 102. Pulling the handle 2 causes the pull rope 101 to pull the locking tongue 3 back into the transmission groove 12, thereby achieving the effect of pulling back to unlock. When the handle 2 is released, the locking tongue 3 is ejected outward by the locking tongue spring 4, thus achieving the purpose of locking. This embodiment uses the pull rope 101 to realize the transmission between the locking tongue 3 and the pull rope 101. The structural design is reasonable and simple, which can effectively simplify the structure of door and window locks and reduce the production cost of door and window locks. Example 6:

[0048] Reference Figure 13This embodiment is basically the same in structure as Embodiment 1, except that: the other end of the transmission component 5 is provided with a spring-loaded driving tooth segment 51E, the latch 3 is provided with an elastically engaged tooth segment 31E, and the transmission groove 12 is provided with a linkage gear 15 that causes the transmission component 5 to pull the latch 3 back. The linkage gear 15 is hinged to the outer shell 1, and the linkage gear 15 meshes with both the spring-loaded driving tooth segment 51E and the elastically engaged tooth segment 31E. Pulling the handle 2 causes the transmission component 5 to slide downward, allowing the spring-loaded driving tooth segment 51E to drive the linkage gear 15 to rotate. The linkage gear 15 then moves the elastically engaged tooth segment 31E, causing the latch 3 to retract into the spring-loaded transmission groove 12, thus achieving the unlocking purpose. After releasing the handle 2, the transmission component 5 is reset by the action of the rack and pinion spring 7, and the latch 3 is ejected outward by the action of the latch spring 4. At the same time, the elastically engaged tooth segment 31E drives the linkage gear 15 to rotate, causing the transmission component 5 to reset, thus achieving the locking purpose. This embodiment utilizes the linkage gear 15, the spring tongue drive tooth segment 51E, and the elastically mating tooth segment 31E to achieve transmission between the locking tongue 3 and the transmission component 5, which has the advantages of reasonable structural design, simplicity, and stable transmission.

[0049] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A large opening and closing handle structure for use in door and window locks, comprising a housing (1), wherein the front of the housing (1) is provided with a slot (11) and the back is provided with a transmission slot (12), the slot (11) and the transmission slot (12) are connected by a transmission hole, a handle (2) is provided in the slot (11), one end of the handle (2) is provided with a hinge part (21) that is hinged to the housing (1), a lock tongue (3) and a transmission structure for linkage of the lock tongue (3) are provided in the transmission slot (12), and a lock tongue inlet and outlet (13) communicating with the transmission slot (12) is provided on the outer side of the housing (1), characterized in that: The transmission structure includes a transmission component (5) that is linked with the locking tongue (3). One end of the transmission component (5) extends from the transmission hole into the slot (11). A transmission tooth (51) is provided on one end of the transmission component (5). A transmission gear (22) that meshes with the transmission tooth (51) is provided on the hinge part (21).

2. The large opening and closing handle structure applied to door and window locks according to claim 1, characterized in that: The transmission gear (22), hinge (21) and handle (2) are integrally formed.

3. The large opening and closing handle structure applied to door and window locks according to claim 1, characterized in that: The vertical length of the slot (11) is greater than the vertical length of the handle (2), and a reserved space is left between the bottom surface of the other end of the handle (2) and the bottom surface of the slot (11) to facilitate the user's fingers to be inserted into the slot (11).

4. A large opening and closing handle structure for door and window locks according to any one of claims 1-3, characterized in that: The transmission groove (12) is provided with a latch spring (4) for driving the latch (3) to extend out of the outer shell (1), and the transmission structure also includes a rack spring (7) for driving the transmission component (5) to reset.

5. The large opening and closing handle structure applied to door and window locks according to claim 4, characterized in that: The transmission groove (12) is provided with a steering component (8), the steering component (8) is provided with a rotating shaft (81), a steering linkage (82) and a steering drive (83) for driving the lock tongue (3) to retract into the transmission groove (12), the rotating shaft (81) is hinged to the outer shell (1); the other end of the transmission component (5) is provided with a clearance port (531A) for avoiding the rotating shaft (81) and a linkage port (532A) for linking the steering linkage (82) to allow the steering component (8) to swing around the rotating shaft (81) as the center, the steering linkage (82) is movably fitted in the linkage port (532A), the lock tongue (3) is provided with a mating slot (30), the steering component (8) is located in the mating slot (30) and can swing around the rotating shaft (81) as the rotation center in the mating slot (30).

6. The large opening and closing handle structure applied to door and window locks according to claim 4, characterized in that: The other end of the transmission component (5) is provided with a driving inclined surface (51B) for pulling the lock tongue (3) back into the transmission groove (12). The end of the driving inclined surface (51B) away from the lock tongue inlet and outlet (13) is inclined upward and away from the lock tongue inlet and outlet (13). The lock tongue (3) is provided with a first linkage inclined surface (31B) that slides with the driving inclined surface (51B).

7. The large opening and closing handle structure applied to door and window locks according to claim 4, characterized in that: The other end of the transmission component (5) is provided with a drive structure for pulling the lock tongue (3) back into the transmission groove (12). The drive structure includes a drive column (52C). The lock tongue (3) is provided with a second linkage inclined surface (31C) that slides with the drive column (52C). The end of the second linkage inclined surface (31C) away from the lock tongue inlet and outlet (13) is inclined upward and away from the lock tongue inlet and outlet (13).

8. The large opening and closing handle structure applied to door and window locks according to claim 4, characterized in that: The other end of the transmission component (5) is provided with a drive protrusion (51D) for pulling the lock tongue (3) back into the transmission groove (12). The lock tongue (3) is provided with a linkage groove (31D) for inserting the drive protrusion (51D). The end of the linkage groove (31D) away from the lock tongue inlet and outlet (13) is inclined upward and away from the lock tongue inlet and outlet (13).

9. The large opening and closing handle structure applied to door and window locks according to claim 4, characterized in that: The transmission component (5) and the locking tongue (3) are linked by a pull rope (101). The transmission groove (12) is provided with a reversing component (102) for reversing the pull rope (101). One end of the pull rope (101) is connected to the locking tongue (3), and the other end is connected to the transmission component (5) after being reversed by the reversing component (102).

10. The large opening and closing handle structure applied to door and window locks according to claim 4, characterized in that: The other end of the transmission component (5) is provided with a spring-loaded driving tooth segment (51E), the latch (3) is provided with an elastic engagement tooth segment (31E), and the transmission groove (12) is provided with a linkage gear (15) that causes the transmission component (5) to pull back the latch (3). The linkage gear (15) is hinged to the outer shell (1), and the linkage gear (15) meshes with both the spring-loaded driving tooth segment (51E) and the elastic engagement tooth segment (31E).

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