Transmission box with adjustable handle center distance and door and window

Abstract

The utility model provides a transmission box with adjustable handle center distance and a door and window, the transmission box comprises a transmission shell and a transmission box body, the transmission box body is embedded in the transmission shell, an adjusting assembly is arranged in the transmission shell, a gear sleeve used for being connected with a handle driving shaft is arranged in the transmission box body, and the handle driving shaft is connected with the adjusting assembly. The transmission box body can move up and down in the transmission shell through an adjusting assembly. The transmission box body is formed by splicing a first box body and a second box body. According to the transmission box, the transmission box body moves up and down in the transmission shell by adjusting the adjusting assembly, so that the vertical distance between the lap joint face of the transmission box and the surface of a C-shaped groove of a window sash profile and the axis of a shaft hole of the transmission box can be changed, and the center distance of a handle of the transmission box is adjusted; therefore, the specifications and types of the transmission box can be reduced, the mold opening, manufacturing and inventory costs are reduced, and the problems of multiple specifications and high mold opening, manufacturing and inventory costs caused by the non-adjustable center distance of the handle of the transmission box are solved.

Description

Technical Field

[0001] This utility model relates to the field of door and window hardware technology, and in particular to a transmission box and door / window with adjustable handle center distance. Background Technology

[0002] The handle and transmission box are installed on the window sash profile, which is the conventional way to open and close doors and windows in the industry. Door and window manufacturers have a variety of window sash profile specifications and models. Different specifications of profiles have different cavity dimensions, resulting in different distances between the surface of the C-groove of the window sash profile and the bottom of the cavity. In order to meet the aesthetic requirements, the handle needs to be installed centered on the surface of the window sash profile. This requires the center distance of the handle of the transmission box itself to match the specifications of the window sash profile. This leads to a variety of transmission box specifications, resulting in higher costs for mold making, manufacturing, and inventory. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a transmission box and door / window with adjustable handle center distance, in order to solve the problem of multiple specifications and high costs of mold opening, manufacturing and inventory caused by the non-adjustable handle center distance of the transmission box itself.

[0004] To solve the above-mentioned technical problems, the technical solution used in this utility model is as follows:

[0005] The present invention discloses a transmission box with adjustable handle center distance, comprising a transmission housing and a transmission box body. The transmission box body is embedded in the transmission housing, and an adjustment component is provided inside the transmission housing. A gear sleeve for connecting the handle drive shaft is provided inside the transmission box body, and the transmission box body can move up and down inside the transmission housing through the adjustment component.

[0006] The transmission housing is composed of a first housing and a second housing.

[0007] Preferably, the adjustment assembly includes an adjustment screw and an adjustment block;

[0008] The transmission housing has protrusions on both the left and right sides, and the adjusting blocks are fixedly installed inside the protrusions. The transmission housing has adjusting screws that correspond one-to-one with the adjusting blocks. The adjusting screws are axially locked in the transmission housing and can rotate. The adjusting screws pass through the corresponding adjusting blocks and are threadedly connected to the corresponding adjusting blocks.

[0009] More preferably, the transmission housing is provided with a groove corresponding to the protrusion, the protrusion slides in the corresponding groove, and the adjusting screw passes through the protrusion from one side of the groove, and the other end abuts against the side wall of the groove on the other side.

[0010] More preferably, the transmission housing is provided with a first slide hole and a scale is provided on the side of the first slide hole, and the transmission box is provided with a scale indicator block that can slide in the first slide hole.

[0011] Preferably, the gear sleeve is provided with a cover, a first spring and a retaining ring in sequence from its first end to its second end. The two ends of the first spring abut against the cover and the retaining ring respectively, and the first spring causes the retaining ring to tilt. The retaining ring is provided with a first through hole that matches the cross-section of the handle drive shaft.

[0012] The transmission housing is provided with a disassembly and assembly hole on its surface leading to the retaining ring.

[0013] More preferably, the number of retaining rings is at least two.

[0014] Preferably, a second spring is provided radially along the gear sleeve inside the transmission housing, a groove is provided on the outer surface of the gear sleeve, a ball is provided between the second spring and the groove, and the second spring pushes the ball into the groove.

[0015] Preferably, the transmission housing includes a housing body, a first locking bar, and a second locking bar. The first locking bar and the second locking bar are slidably connected to the housing body on the left and right sides of the housing body, respectively, and the left end of the first locking bar is fastened to the right end of the second locking bar. The left end of the first locking bar extends downward and is provided with a toothed rack plate, and the right end of the second locking bar extends downward and is provided with a buckle plate.

[0016] The transmission housing contains a transmission gear plate positioned in a left-right direction. The left side of the transmission gear plate meshes with the gear sleeve. An ear plate extends forward from the upper side of the transmission gear plate, and a buckle plate passes through the ear plate and is slidably connected to it. The front side of the transmission gear plate has a tooth groove in a left-right direction, and the rear side has a protrusion parallel to the tooth groove. The transmission housing has a second slide hole, and the protrusion is slidably connected in the second slide hole. A fixing post is provided in the housing between the rack plate and the transmission gear plate. A gear is sleeved on the fixing post, and the gear is slidably connected to the fixing post. The axial direction of the gear is perpendicular to the axial direction of the gear sleeve. The two sides of the gear mesh with the teeth in the tooth groove and the teeth on the rack plate, respectively.

[0017] Preferably, at least one fastening component is provided at each end of the transmission housing, and the fastening component is used to fix the transmission housing in the cavity of the door and window sash profile;

[0018] The fastening assembly includes a first screw and a first washer threadedly connected to the first screw. The first washer has a notch. The transmission housing has a locking block corresponding to the notch. When the locking block is engaged at the notch, it can prevent the first washer from rotating simultaneously with the first screw. A washer is provided between the screw head of the first screw and the first washer.

[0019] Another objective of this utility model is to provide a door and window, including a door and window frame, a door and window sash, and the aforementioned transmission box with adjustable handle center distance. The door and window sash is installed in the door and window frame, and the transmission box is installed inside the profile of the door and window sash.

[0020] Compared with the prior art, the beneficial effects of the adjustable handle center distance transmission box of this utility model are mainly reflected in the following: the transmission box is embedded in the transmission housing, and the transmission housing is provided with an adjustment component. By adjusting the adjustment component, the transmission box can move up and down within the transmission housing, thereby changing the vertical distance between the overlapping surface of the transmission box and the C-groove surface of the window sash profile and the axis of the shaft hole of the transmission box. This realizes the adjustment of the handle center distance of the transmission box, thereby reducing the variety of transmission box specifications, reducing mold opening, manufacturing and inventory costs, and solving the problem of multiple specifications and high mold opening, manufacturing and inventory costs caused by the non-adjustable handle center distance of the transmission box itself. The transmission box of this utility model can adapt to the installation needs of various handle center distances, has strong versatility, and can also effectively deal with the situation where there are deviations in the process holes processed by door and window factories.

[0021] Compared with the prior art, the present invention uses a transmission box with adjustable handle center distance on a door or window, which has the beneficial effects of the aforementioned transmission box with adjustable handle center distance. In particular, when there is a deviation in the handle center distance determined by the installation process hole on the door or window sash profile, the handle center distance of the transmission box can be adjusted to adapt to the position of the installation process hole, meet the installation requirements, and reduce the difficulty of the installation process. Attached Figure Description

[0022] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0023] Figure 1 The present invention provides an overall structure for a transmission box with an adjustable handle center distance. Figure 1 ;

[0024] Figure 2 The present invention provides an overall structure for a transmission box with an adjustable handle center distance. Figure 2 ;

[0025] Figure 3 An internal structure of a transmission box with adjustable handle center distance provided in this embodiment of the utility model. Figure 1 ;

[0026] Figure 4 An internal structure of a transmission box with adjustable handle center distance provided in this embodiment of the utility model. Figure 2 ;

[0027] Figure 5 for Figure 2 AA section view in the middle;

[0028] Figure 6 A schematic diagram of the internal structure of a transmission box with adjustable handle center distance provided in this embodiment of the utility model when the door and window are in the open position;

[0029] Figure 7 A schematic diagram of the internal structure of a transmission box with adjustable handle center distance provided in this embodiment of the utility model when the doors and windows are locked.

[0030] Figure 8 An exploded view of a transmission box with an adjustable handle center distance, provided for an embodiment of this utility model;

[0031] Figure 9 An installation state diagram of the fastening assembly provided in an embodiment of this utility model;

[0032] Figure 10 A schematic diagram of a transmission box-type door sash profile with adjustable handle center distance provided for an embodiment of this utility model;

[0033] Figure Descriptions: 1. Transmission housing; 2. Transmission box; 3. Gear sleeve; 4. Adjusting screw; 5. Adjusting block; 6. Protrusion; 101. First housing; 102. Second housing; 7. Receiving cavity; 8. Shoulder; 9. Slide groove; 10. First slide hole; 11. Scale indicator block; 12. Cover; 13. First spring; 14. Snap ring; 15. First through hole; 16. Disassembly hole; 17. Second spring; 18. Groove; 19. Ball bearing; 104. First locking bar; 105. Second locking bar; 106. Rack plate; 103. Transmission gear plate; 20. Ear plate; 21. Protrusion; 22. Fixing post; 23. Gear; 24. First box; 201. Second box; 202. Mounting through hole; 25. Second slide hole; 26. First screw; 27. First washer; 28. Notch; 29. ​​Locking block; 30. Washer; 31. Door and window sash profile; 32. C-groove; 33. Handle drive shaft; 34. Detailed Implementation

[0034] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand this utility model and implement it. However, the embodiments are not intended to limit this utility model. In this embodiment, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this utility model.

[0035] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to and integrated with the other element, or there may be an intervening element present. The terms "mounted," "one end," "the other end," and similar expressions used in this invention are for illustrative purposes only.

[0036] This embodiment provides a transmission box with an adjustable handle center distance, such as... Figures 1 to 2 As shown, it includes a transmission housing 1 and a transmission box 2. The transmission box 2 is embedded in the transmission housing 1. An adjustment component is provided in the transmission housing 1. A gear sleeve 3 for connecting the handle drive shaft 34 is provided in the transmission box 2. The transmission box 2 can move up and down in the transmission housing 1 through the above-mentioned adjustment component.

[0037] In this embodiment, the transmission box 2 is embedded in the transmission housing 1. An adjustment component is provided in the transmission housing 1. By adjusting the adjustment component, the transmission box 2 can be moved up and down in the transmission housing 1, thereby changing the vertical distance between the overlapping surface of the transmission box and the C-groove 33 of the door and window sash profile and the axis of the shaft hole of the transmission box. This realizes the adjustment of the center distance of the handle of the transmission box, thereby reducing the variety of specifications of the transmission box, reducing the mold opening, manufacturing and inventory costs, and solving the problem of many specifications and high mold opening, manufacturing and inventory costs caused by the non-adjustable center distance of the handle of the transmission box itself.

[0038] This utility model transmission box can adapt to the installation needs of various handle center distances, has strong versatility, and can also effectively deal with the situation where there are deviations in the installation process holes processed by door and window factories.

[0039] It should be noted that the size and adjustment range of the center distance of the transmission box's handle in this embodiment can be divided according to the specifications of the door and window sash profile 32, specifically into 18mm~25mm, 25mm~32mm, 32mm~39mm, etc. When the center distance of the transmission box handle is in the range of 18mm~25mm, such as... Figure 1 and Figure 2As shown, where Figure 1 The center distance between the handles of the transmission box is 18mm. Figure 2 The center distance of the handles in the transmission box is 25mm.

[0040] In a preferred embodiment, such as Figures 3 to 4 As shown, the adjustment assembly includes adjusting screws 4 and adjusting blocks 5. Both sides of the transmission housing 2 have protrusions 6, and adjusting blocks 5 are fixedly installed within each protrusion 6. The transmission housing 1 has adjusting screws 4 corresponding to the adjusting blocks 5 one-to-one. The adjusting screws 4 are axially fixed within the transmission housing 1 and can rotate, meaning that while axially fixed, the adjusting screws 4 can rotate around their axes. The adjusting screws 4 pass through the corresponding adjusting blocks 5 and are threadedly connected to them. In this embodiment, because the adjusting screws 4 are axially fixed, rotating the adjusting screws 4 will cause the adjusting blocks 5 to move axially. Since the adjusting blocks 5 are fixed within the protrusions 6 of the transmission housing 2, they will correspondingly cause the transmission housing 2 to move axially with respect to the adjusting screws 4. Specifically, as an example, the adjusting blocks 5 are inserted from the surface of the protrusions 6 and embedded within them. This method is convenient to install and provides reliable fixation.

[0041] Preferably, the adjusting screw 4 is a cylindrical head screw. The transmission housing 1 includes a housing body, which is composed of a first housing 101 and a second housing 102. The first housing 101 and the second housing 102 are respectively provided with receiving cavities 7 for embedding half of the cylindrical head of the adjusting screw 4. After the adjusting screw 4 is installed through the protrusion 6, the first housing 101 and the second housing 102 are joined together, and the shoulder 8 formed by the receiving cavity 7 secures the cylindrical head of the adjusting screw 4, thereby axially securing the adjusting screw 4. Furthermore, the transmission housing 1 is provided with a sliding groove 9 corresponding to the protrusion 6 of the transmission housing 2. The protrusion 6 slides within the corresponding sliding groove 9, and the other end of the adjusting screw 4 abuts against the side wall of the sliding groove 9, thus preventing over-adjustment that could cause the protrusion 6 to dislodge from the adjusting screw 4. Specifically, the adjusting screw 4 can be a cylindrical head hexagonal screw. A hexagonal wrench can be inserted into the cylindrical head of the adjusting screw 4 and rotated clockwise or counterclockwise to easily move the transmission housing 1 left or right.

[0042] In another further preferred embodiment, such as Figures 1 to 2 As shown, the transmission housing 1 is provided with a first slide hole 10 and a scale is provided on the side of the first slide hole 10. The transmission box 2 is provided with a scale indicator block 11. The scale indicator block 11 slides in the first slide hole 10 to point to the corresponding scale. When the transmission box 2 moves, the movement distance can be intuitively obtained and controlled by the cooperation of the scale and the scale indicator block 11, making the adjustment operation more precise and controllable.

[0043] In another preferred embodiment, such as Figure 5As shown, a cover 12, a first spring 13, and a retaining ring 14 are sequentially arranged inside the gear sleeve 3 from its first end to its second end. The two ends of the first spring 13 abut against the cover 12 and the retaining ring 14 respectively, causing the retaining ring 14 to tilt. The retaining ring 14 is provided with a first through hole 15 that matches the cross-section of the handle drive shaft 34. The transmission housing 1 is provided with a disassembly and assembly hole 16 that leads from its surface to the retaining ring 14.

[0044] It should be noted that the inner end face of the second end of the gear sleeve 3 is an inclined surface. The retaining ring 14 is placed against this inclined inner end face. At this time, the first through hole 15 is also inclined. After the first spring 13 abuts against the retaining ring 14 without external force, the retaining ring 14 can be kept in an inclined state, ensuring that the plane of the retaining ring 14 is not perpendicular to the axial direction of the gear sleeve 3. When installing the handle drive shaft 34, the end of the handle drive shaft 34 pushes the retaining ring 14 along its axial direction, which compresses the first spring 13. When the end face of the first spring 13 abutting against the retaining ring 14 is compressed to be perpendicular to the axial direction of the gear sleeve 3, the retaining ring 14 is also perpendicular to the axial direction of the gear sleeve 3. At this time, the handle drive shaft 34... A first spring 13 and a retaining ring 14 pass through the gear sleeve 3 axially. The retaining ring 14, under the rebound force of the first spring 13, returns to its tilted state, ultimately securing the handle drive shaft 34 using the wall of the tilted first through hole 15. Tests have shown that this structure can generate an axial stopping force of no less than 50 kg for the handle drive shaft 34, effectively ensuring its reliable fastening. To disassemble the handle drive shaft 34, a disassembly tool is inserted into the disassembly hole 16 and pried the retaining ring 14, compressing the first spring 13 until the plane of the retaining ring 14 changes to be perpendicular to the axial direction of the gear sleeve 3. Then, the handle drive shaft 34 can be removed axially along the gear sleeve 3. It should be noted that the size of the first through hole 15 is the same as or equivalent to the cross-sectional size of the handle drive shaft 34; for example, both the cross-sectional size of the handle drive shaft 34 and the size of the first through hole 15 are 7mm x 7mm. To facilitate installation and prevent jamming, in this embodiment, the outer diameter of the first spring 13 and the retaining ring 14 should be slightly smaller than the inner diameter of the gear sleeve 3. In specific installation, as an example, the cover 12 and the gear sleeve 3 can be riveted together so that the cover 12 is fastened inside the gear sleeve 3. This reduces the difficulty of the installation process and saves space, thereby reducing the external size of the transmission box 2 in this embodiment.

[0045] In a further preferred embodiment, such as Figure 5 As shown, there are at least two retaining rings 14, which increases the number of first through holes 15 used to secure the handle drive shaft 34. This increases the friction between the hole wall of the first through hole 15 and the handle drive shaft 34 when they are secured, thereby improving the tensile strength and stability of the handle drive shaft 34. The end face of the retaining ring 14 near the disassembly hole 16 is beveled, which allows the disassembly tool to pass through the disassembly hole 16 and be easily inserted into the end face of the retaining ring 14, thereby prying the retaining ring 14.

[0046] In another preferred embodiment, such as Figure 3 and Figure 8 As shown, a second spring 17 is radially arranged inside the transmission housing 2 along the gear sleeve 3. A groove 18 is provided on the outer surface of the gear sleeve 3. A ball bearing 19 is arranged between the second spring 17 and the groove 18, and the second spring 17 pushes the ball bearing 19 into the groove 18. The ball bearing 19 rotates when the gear sleeve 3 rotates, thereby generating sliding friction, which increases the rotational resistance of the gear sleeve 3. After appropriately increasing the rotational resistance of the gear sleeve 3, the user will feel a certain feedback force when rotating the handle, thereby improving the user experience.

[0047] In another preferred embodiment, such as Figures 6 to 8 As shown, the transmission housing 1 includes a housing body, a first locking bar 104, and a second locking bar 105. The first locking bar 104 and the second locking bar 105 are slidably connected to the housing body on the left and right sides, respectively, and the left end of the first locking bar 104 is fastened to the right end of the second locking bar 105. A toothed rack plate 106 extends downward from the left end of the first locking bar 104, and a buckle plate 103 extends downward from the right end of the second locking bar 105. A transmission gear plate 20 is provided inside the transmission housing 2, which is placed in the left-right direction. The lower side of the transmission gear plate 20 meshes with the gear sleeve 3, and the upper side of the transmission gear plate 20 extends forward to form an ear. Plate 21 and buckle plate 103 pass through and slide through ear plate 21. The front side of transmission gear plate 20 is provided with tooth grooves along the left and right direction, and the rear side is provided with a protrusion 22 parallel to the tooth grooves. The transmission housing 2 is provided with a second slide hole 26, and the protrusion 22 is slidably connected in the second slide hole 26. A fixing post 23 is provided between the rack plate 106 and the transmission gear plate 20 inside the housing body. The fixing post 23 is fitted with a gear 24, and the gear 24 is slidably connected to the fixing post 23. The axis of the gear 24 is perpendicular to the axis of the gear sleeve 3. The two sides of the gear 24 mesh with the teeth of the tooth groove and the teeth on the rack plate 106, respectively. It should be noted that the thickness of the transmission gear plate 20 should be sufficient to ensure that the tooth groove has an appropriate depth so that when the gear 24 meshes with the teeth in the tooth groove, the gear 24 can be partially resting in the tooth groove, so that when the transmission gear plate 20 moves, it can drive the gear 24 to move on the fixing post 23.

[0048] In this embodiment, when the gear sleeve 3 is driven to rotate counterclockwise by the handle drive shaft 34, the transmission gear plate 20 will move to the right, which in turn will drive the second locking bar 105 to move to the right. At the same time, the gear 24 will also rotate from front to back, which will drive the first locking bar 104 to move to the left, so that the first locking bar 104 and the second locking bar 105 move towards each other. When the gear sleeve 3 is driven to rotate clockwise by the handle drive shaft 34, the transmission gear plate 20 will move to the left, which in turn will drive the second locking bar 105 to move to the left. At the same time, the gear 24 will also rotate from back to front, which will drive the first locking bar 104 to move to the right, so that the first locking bar 104 and the second locking bar 105 move away from each other, thereby realizing bidirectional transmission. When the center distance of the handle is reduced by moving the transmission housing 2 upward through the adjusting component, the gear sleeve 3 pushes the transmission gear plate 20 upward along the buckle plate 103, and then pushes the gear 24 upward along the fixed column 23 through the transmission gear plate 20; when the center distance of the handle is increased by moving the transmission housing 2 downward through the adjusting component, the transmission housing 2 can drive the transmission gear plate 20 downward along the buckle plate 103 through the protrusion 22, and then push the gear 24 downward along the fixed column 23 through the transmission gear plate 20, thereby realizing the up and down movement of the transmission housing 2.

[0049] It should be noted that the sliding fit between the convex strip 22 and the second slide hole 26 not only ensures that the transmission gear plate 20 can move precisely left and right with the gear sleeve 3, but also improves the stability of the transmission gear plate 20's up and down movement, ensuring the smooth operation of the machine.

[0050] To facilitate the assembly of the above-mentioned structural components inside the transmission housing 2, it is further preferred that the transmission housing 2 is assembled from a first housing 201 and a first housing 202, specifically by riveting the first housing 201 and the first housing 202 together.

[0051] In a specific embodiment, such as Figures 1 to 2 As shown, at least one fastening component is provided at each end of the transmission housing 1. The fastening component is used to fix the transmission housing 1 into the cavity of the door / window sash profile 32. Correspondingly, the transmission housing 1 is provided with mounting through holes 25 corresponding to the fastening components, so that the fastening components can be installed through the mounting through holes 25; for example Figures 8 to 9 As shown, the fastening assembly includes a first screw 27 and a first washer 28 threadedly connected to the first screw 27. The first washer 28 is provided with a notch 29. The transmission housing 1 is provided with a locking block 30 corresponding to the notch 29. When the locking block 30 is locked at the notch 29, it can prevent the first washer 28 from rotating simultaneously with the first screw 27. A washer 31 is provided between the screw head of the first screw 27 and the first washer 28.

[0052] During installation, the worker only needs to turn the first screw 27 to engage the locking block 30 at the notch 29. Continuing to turn the first screw 27 in the same direction, the worker can secure the first washer 28 close to the screw head of the first screw 27, thus tightening the C-groove 33 of the door / window sash profile 32. Installation is quick and reliable, and there is no need to drill holes in the door / window sash profile 32, thus avoiding damage to the profile. It is important to note that the minimum clear width of the first washer 28 should be slightly smaller than the clear width between the openings of the C-groove 33 of the door / window sash profile 32 at the installation location. This allows the first washer 28 to be inserted into the C-groove 33 of the door / window sash profile 32 along with the transmission box. Simultaneously, the maximum clear width of the first washer 28 should be slightly larger than the clear width between the openings of the C-groove 33 of the door / window sash profile 32 at the installation location, ensuring that both ends of the first washer 28 can reach the openings of the C-groove 33 of the door / window sash profile 32, achieving the tightening function.

[0053] This second embodiment provides a door and window, including a door and window frame, a door and window sash, and a transmission box with an adjustable handle center distance as described above. The door and window sash is installed in the door and window frame, and the transmission box is installed inside the profile of the door and window sash.

[0054] In this embodiment, the door and window use the aforementioned adjustable handle center distance transmission box, which has the beneficial effects of the aforementioned adjustable handle center distance transmission box. In particular, when there is a deviation in the handle center distance determined by the installation process hole on the door and window sash profile 32, the handle center distance of the transmission box can be adjusted to adapt to the position of the installation process hole, meet the installation requirements, and reduce the difficulty of the installation process.

[0055] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A lever center distance adjustable transmission box, characterized in that: The transmission shell and the transmission box are provided with an adjusting assembly and a gear sleeve for connecting a handle driving shaft, respectively. The transmission box is composed of a first box and a second box.

2. A lever center-adjustable transmission box according to claim 1, characterized in that: The adjusting assembly comprises an adjusting screw and an adjusting block. The transmission box is provided with a protruding part on both sides, and the adjusting block is fixedly arranged in the protruding part.

3. A handle center-adjustable transmission box according to claim 2, characterized in that: The transmission shell is provided with a sliding groove corresponding to the protruding part, and the protruding part slides in the corresponding sliding groove.

4. The lever center-adjustable transmission box according to claim 2, characterized in that: The transmission shell is provided with a first sliding hole and a scale on the side of the first sliding hole, and the transmission box is provided with a scale indicating block which can slide in the first sliding hole.

5. The lever center adjustable transmission box according to claim 1, characterized in that: The gear sleeve is provided with a cover, a first spring and a clasp from the first end to the second end of the gear sleeve. The transmission shell is provided with a dismounting hole leading to the clasp.

6. A handle center-adjustable transmission box according to claim 5, characterized in that: The number of the clasp is at least two.

7. The adjustable lever center drive of claim 1, wherein: The transmission box is provided with a second spring radially along the gear sleeve, and the gear sleeve is provided with a groove.

8. The adjustable lever center drive of claim 1, wherein: The transmission shell comprises a shell body, a first lock strip and a second lock strip, the first lock strip and the second lock strip are respectively slidably connected with the shell body on the left and right sides of the shell body, and the left end of the first lock strip and the right end of the second lock strip are connected by buckling. The transmission box is provided with a transmission gear plate placed along the left and right directions, the lower side of the transmission gear plate is engaged with the gear sleeve, the upper side of the transmission gear plate extends forward to form an ear plate, the buckle plate penetrates the ear plate and is slidably connected with the ear plate, the front side of the transmission gear plate is provided with a gear slot along the left and right directions, and the rear side is provided with a protruding strip parallel to the gear slot, the transmission box is provided with a second sliding hole, and the protruding strip is slidably connected in the second sliding hole. The shell body is provided with a fixed column between the gear rack plate and the transmission gear plate, the fixed column is provided with a gear, and the gear is slidably connected with the fixed column, the axial direction of the gear is perpendicular to the axial direction of the gear sleeve, and the gear on both sides is engaged with the gear teeth in the gear slot and the gear teeth on the gear rack plate, respectively.

9. The adjustable lever center drive of claim 1, wherein: At least one fastening assembly is arranged at each end of the transmission housing, and the fastening assembly is used to fix the transmission housing in the cavity of the door and window sash profile; The fastening assembly comprises a first screw and a first washer which is threadedly connected with the first screw, the first washer is provided with a notch, the transmission housing is provided with a clamping block corresponding to the notch, and the clamping block can prevent the first washer from rotating simultaneously with the first screw when the clamping block is clamped in the notch; a washer is arranged between the screw head of the first screw and the first washer.

10. A door or window, characterised in that: The door and window frame, the door and window sash, and the transmission box with adjustable handle center distance according to any one of claims 1 to 9 are provided, the door and window sash is installed in the door and window frame, and the transmission box is installed in the profile of the door and window sash.

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