A transmission case

Abstract

The transmission box comprises a shell assembly, a lever transmission mechanism, a secondary shell and a locking insert. Specifically, the lever transmission mechanism is arranged in the shell assembly, and the lever transmission mechanism has a mounting hole for inserting a square shaft of a handle. The secondary shell is arranged on a profile slot of a door and window profile, and the secondary shell is arranged on a side of the shell assembly facing the handle. The side of the secondary shell facing the handle is configured with a mounting groove. The locking insert is slidably arranged in the mounting groove. After the transmission box is installed, the handle is installed. At this time, the locking insert is pulled out from the mounting groove of the secondary shell by a part, and is pressed against the inner wall of the door and window profile to fix the handle. Since the secondary shell is offset from the center of the profile slot, the length of the locking screw can be shortened, and the stroke of the locking insert is short, which improves the installation efficiency and prevents the locking insert from falling off into the profile slot during disassembly.

Description

Technical Field

[0001] This invention relates to the field of door and window lock technology, and in particular to a transmission box. Background Technology

[0002] The transmission box is a key component that converts the rotation of a door or window handle into the movement of a transmission rod. The core functional components of a common transmission box are a gear and rack drive mechanism, a housing, and a locking nut. The gear and rack drive mechanism is housed within the housing and has mounting holes for the square shaft of the handle to be inserted. The locking nut is inserted into the housing. During installation, the housing is installed in the profile slot of the door or window frame. The square shaft of the handle passes through the door or window frame and is inserted into the mounting hole of the gear and rack drive mechanism. The handle is locked to the locking nut by screws or other locking components passing through the door or window frame. In this structure, the locking nut is relatively far from the inner wall of the door or window frame near the handle, requiring a longer locking screw. Simultaneously, the travel of the locking nut is long, resulting in a longer installation time. Therefore, increasing the range of locking screw length and installation time is necessary. Summary of the Invention

[0003] The purpose of this invention is to provide a transmission box that addresses the technical problems of increased screw length range and installation time in related technologies.

[0004] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a transmission box, the transmission box comprising:

[0005] Housing assembly;

[0006] A lever transmission mechanism is disposed within the housing assembly, and the lever transmission mechanism has a mounting hole for the square shaft of the handle to be inserted.

[0007] The sub-shell is mounted on the profile groove of the door and window profile, and the side of the shell assembly facing the handle is provided. The side of the sub-shell facing the handle is provided with a mounting groove.

[0008] The locking insert is slidably disposed within the mounting groove.

[0009] In some embodiments, the housing assembly includes a first and second housing that interlock, and the lever transmission mechanism includes a transmission rod and an eccentric drive member. The transmission rod is movably disposed between the first and second housings along its length direction and has a drive groove at a preset angle to its length direction. The eccentric drive member is rotatably disposed on the second housing, and the mounting hole is constructed at the rotation center of the eccentric drive member. The end of the eccentric drive member away from the rotation center is provided with a lever pin that can be inserted into the drive groove.

[0010] In some embodiments, the subshell is spatially misaligned with the rotational plane of the eccentric drive.

[0011] In some embodiments, the connection between the top of the first shell and the top of the second shell is provided with an outwardly extending guide section, and the guide section is provided with a guide groove extending along the length direction, and the transmission rod is disposed in the guide groove.

[0012] In some embodiments, the bottom of the guide slide is provided with a mounting groove, the eccentric drive member is disposed in the mounting groove, the transmission rod has a toggle part that extends into the mounting groove, the drive slide is provided on the toggle part, and the preset included angle is 90°.

[0013] In some embodiments, the first shell is located on the side of the second shell away from the handle, and the secondary shell is located on the side of the second shell away from the first shell.

[0014] In some embodiments, the bottom of the guide section of the second shell is provided with a snap-fit ​​groove, the top of the sub-shell is inserted into the snap-fit ​​groove, the bottom of the guide section of the first shell is provided with an insertion groove extending to the snap-fit ​​groove, and the side wall of the sub-shell near the top is provided with an extension section extending into the insertion groove.

[0015] In some embodiments, a limiting groove is provided at the bottom of the second shell, and a hook structure extending into the limiting groove is constructed on one side of the sub-shell.

[0016] In some embodiments, the first and / or second shells have through holes, a locking member is inserted through the through holes, and a clamping member is locked at the end of the locking member away from the head. The clamping member is hung on the inner wall of the profile groove, and the first and / or second shells are provided with an anti-rotation structure that abuts against the clamping member.

[0017] In some embodiments, the mounting groove has a first guide protrusion inside, and the outer wall of the locking insert has a first guide groove for guiding the first guide protrusion; and / or, the outer wall of the locking insert has a second guide protrusion, and the mounting groove has a second guide groove for guiding the second guide protrusion inside.

[0018] Compared with the prior art, the transmission box of the present invention has at least the following beneficial effects:

[0019] This invention discloses a transmission box, which includes a housing assembly, a lever transmission mechanism, a secondary housing, and a locking insert. Specifically, the lever transmission mechanism is disposed within the housing assembly and has a mounting hole for inserting a square shaft for a handle. The secondary housing is mounted on the profile groove of a door / window profile, with the secondary housing positioned on the side of the housing assembly facing the handle. The side of the secondary housing facing the handle has a mounting groove. The locking insert is slidably disposed within the mounting groove. During installation, the locking insert is first placed in the mounting groove, then the secondary housing is mounted on the profile groove of the door / window profile, and the housing assembly is partially inserted into the profile groove of the door / window profile. The door / window profile has a hole at a position opposite to the mounting hole for the square shaft to pass through. The square shaft is inserted into the mounting hole, and then a locking screw or other locking component passes through the door and window profile and locks with the locking insert in the mounting groove on the side of the sub-shell facing the handle. Since the sub-shell of the present invention is set on the side of the housing assembly facing the handle, and the side of the sub-shell facing the handle has a mounting groove; the locking insert is set in the mounting groove, so the distance between the locking insert and the door and window profile near the inner wall of the handle is shorter, the length of the locking screw required is shorter, the stroke of the locking nut is shorter, and the installation time is shorter. Therefore, the length range of the locking screw engagement is increased and the installation time is reduced, thus improving the installation efficiency. At the same time, the locking insert being set in the mounting groove can prevent the locking insert from falling into the profile groove during the installation process.

[0020] After the transmission box is installed, the handle is installed. At this time, the locking insert is pulled out part of the mounting groove of the sub-shell and pressed against the inner wall of the door and window profile to fix the handle. Since the sub-shell is off-center from the profile groove, the length of the locking screw can be shortened and the stroke of the locking insert is short, which not only improves the installation efficiency, but also prevents the locking insert from falling into the profile groove during disassembly.

[0021] This invention discloses a transmission box that replaces the gear and rack drive mechanism with a lever transmission mechanism. While maintaining the same handle mounting position and transmission distance, the height of the transmission box is significantly reduced (from the conventional 26mm to less than 19mm from the surface of the fan slot). This makes it suitable for extremely narrow fan profiles, ensuring that the mounting slot does not mill into the glass pressure line. This avoids the increased processing difficulty and reduced processing efficiency caused by milling through the profile, as is common with gear and rack drive mechanisms. It also avoids the problem of weakened strength at the milled-through position, and prevents increased risk of water leakage to the indoor side from the glass pressure line and the problem of encroaching on glass installation space, which could prevent the glass from being laid flat. This invention achieves mechanism replacement while maintaining the same transmission distance, and the sub-shell structure ensures that the locking insert does not interfere with the movement of the transmission mechanism.

[0022] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the assembly structure of the transmission box provided in an embodiment of the present invention;

[0025] Figure 2 This is an exploded structural diagram of the transmission box provided in an embodiment of the present invention;

[0026] Figure 3 An exploded structural diagram of the transmission box provided in an embodiment of the present invention from another perspective;

[0027] Figure 4 This is an exploded structural diagram of the transmission box and the door / window profile provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the assembly structure of the transmission box and the door and window profiles provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of an existing transmission box;

[0030] Figure 7 This is a schematic diagram of the existing assembly structure of the transmission box and door / window profiles.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Housing assembly; 11. First housing section; 111. Guide section; 112. Guide groove; 113. Mounting groove; 114. Insertion groove; 115. Through hole; 116. Anti-rotation structure; 12. Second housing section; 121. Snap-fit ​​groove; 122. Limiting groove;

[0033] 2. Door and window profiles; 21. Profile groove; 22. Visible surface; 23. Bottom of sash profile groove; 24. Glass installation space;

[0034] 3. Lever transmission mechanism; 31. Transmission rod; 311. Actuating part; 312. Drive groove; 32. Eccentric drive component; 321. Mounting hole; 33. Actuating pin; 34. Rotating drum;

[0035] 4. Handle; 41. Square shaft;

[0036] 5. Subshell; 51. Mounting slot; 511. First guide protrusion; 52. Extension section; 53. Hook structure;

[0037] 6. Locking insert; 61. First guide groove;

[0038] 7. Locking component; 71. Head;

[0039] 8. Clamping components;

[0040] 9. Gear and rack drive mechanism; 91. Locking nut. Detailed Implementation

[0041] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0042] In the description of this invention, it should be clearly stated that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Existing transmission boxes such as Figure 6-7As shown, the core functional components are the gear and rack drive mechanism 9, the outer casing, and the locking nut. The gear and rack drive mechanism 9 is located inside the outer casing and has a mounting hole 321 for the square shaft 41 of the handle 4 to be inserted. The locking nut 91 is inserted into the outer casing. During installation, the outer casing is installed in the profile slot 21 of the door and window profile 2. The square shaft 41 of the handle 4 passes through the door and window profile 2 and is inserted into the mounting hole 321 of the gear and rack drive mechanism 9. The handle 4 is locked to the locking nut 91 by screws or other locking components passing through the door and window profile 2. The locking nut 91 of this structure is far from the inner wall of the door and window profile 2 near the handle 4, requiring a long locking screw. At the same time, the stroke of the locking nut 91 is long, and the installation time is long. Therefore, the length range of the screws and other locking components is increased, as is the installation time.

[0045] Example 1

[0046] like Figure 1-5 As shown, an embodiment of the present invention provides a transmission box, which includes:

[0047] Housing assembly 1;

[0048] The lever transmission mechanism 3 is disposed inside the housing assembly 1. The lever transmission mechanism 3 has a mounting hole 321 for the square shaft 41 of the handle 4 to be inserted.

[0049] Sub-shell 5 is mounted on the profile groove 21 of the door and window profile 2, and the side of the shell assembly 1 facing the handle 4 is provided. The side of the sub-shell 5 facing the handle 4 is provided with a mounting groove 51.

[0050] The locking insert 6 is slidably disposed in the mounting groove 51.

[0051] In this embodiment, the transmission box includes a housing assembly 1, a lever transmission mechanism 3, a secondary housing 5, and a locking insert 6. Specifically, the lever transmission mechanism 3 is disposed within the housing assembly 1 and has a mounting hole 321 for inserting the square shaft 41 of the handle 4. The secondary housing 5 is mounted on the profile groove 21 of the door / window profile 2, and the secondary housing 5 is positioned on the side of the housing assembly 1 facing the handle 4. The side of the secondary housing 5 facing the handle 4 has a mounting groove 51. The locking insert 6 is slidably disposed within the mounting groove 51. During installation, the locking insert 6 is first slidably disposed within the mounting groove 51, then the secondary housing 5 is mounted on the profile groove 21 of the door / window profile 2, and the housing assembly 1 is partially inserted into the profile groove 21 of the door / window profile 2. The door / window profile 2 has a corresponding opening at the mounting hole 321 for the square shaft 41 to pass through. The square shaft 41 is inserted into the mounting hole 321, and then a locking screw or other locking component passes through the door and window profile 2 and locks with the locking insert 6 in the mounting groove 51 on the side of the sub-shell 5 facing the handle 4. Since the sub-shell 5 in this embodiment is set with the shell assembly 1 facing the handle 4, and the side of the sub-shell 5 facing the handle 4 has a mounting groove 51; the locking insert 6 is set in the mounting groove 51, so the distance between the locking insert 6 and the inner wall of the door and window profile 2 near the handle 4 is shorter, the length of the locking screw is shorter, the stroke of the locking nut is shorter, and the installation time is shorter. Therefore, the length range of the locking screw is increased and the installation time is reduced, thus improving the installation efficiency. At the same time, the locking insert 6 is set in the mounting groove 51 to prevent the locking insert 6 from falling into the profile groove 21 during the installation process.

[0052] After the transmission box is installed, the handle 4 is installed. At this time, the locking insert 6 is pulled out from the mounting groove 51 of the sub-shell 5 and presses against the inner wall of the door and window profile 2 to fix the handle 4. Since the sub-shell 5 is offset from the center of the profile groove 21, the length of the locking screw can be shortened and the stroke of the locking insert 6 is short, which not only improves the installation efficiency, but also prevents the locking insert 6 from falling into the profile groove 21 during disassembly.

[0053] like Figure 6-7 As shown, in the prior art, it is generally required that after the handle 4 is rotated 90 degrees, the transmission rod 31 moves a distance of not less than 18mm. Due to the limitation of the principle of the gear and rack drive mechanism 9, the total height of the transmission box is usually more than 25mm.

[0054] In pursuit of aesthetics, the visible surface 22 of modern window and door profiles 2 is becoming increasingly narrow, resulting in a smaller installation cavity for the transmission box (the profile slot 21 of the window and door profile 2). When installing the transmission box of the traditional gear and rack drive mechanism 9, it is often necessary to mill through the bottom 23 of the sash profile slot. This increases the processing difficulty and reduces processing efficiency; weakens the strength at the milled position; increases the risk of water leakage to the indoor side at the glass pressure line position; and encroaches on the glass installation space 24, making it impossible to lay the glass flat. Therefore, the transmission box using the gear and rack drive mechanism 9 is not suitable for window and door profiles 2 with a narrow visible surface 22.

[0055] In some embodiments, the housing assembly 1 includes a first housing 11 and a second housing 12 that interlock with each other. The lever transmission mechanism 3 includes a transmission rod 31 and an eccentric drive member 32. The transmission rod 31 is movably disposed between the first housing 11 and the second housing 12 along its length direction. The transmission rod 31 has a drive groove 312 that forms a preset angle with its length direction. The eccentric drive member 32 is rotatably disposed on the second housing 12. A mounting hole 321 is constructed at the rotation center of the eccentric drive member 32. The end of the eccentric drive member 32 away from the rotation center is provided with a lever pin 33 that can be inserted into the drive groove 312. Due to the present embodiment... For example, by replacing the gear and rack drive mechanism 9 with a lever transmission mechanism 3, the height of the transmission box is significantly reduced (from the conventional 26mm to less than 19mm from the surface of the fan slot) while keeping the handle 4 installation position and transmission distance unchanged. This makes it suitable for extremely narrow fan profiles, ensuring that the mounting slot will not be milled into the glass pressure line position. This avoids the problems of increased processing difficulty and reduced processing efficiency caused by milling through the profile with the transmission box of the gear and rack drive mechanism 9; it also avoids the problem of weakened strength at the milled-through position; it avoids the increased risk of water leakage to the indoor side at the glass pressure line position and the problem of encroaching on the glass installation space 24, which would prevent the glass from being laid flat. This invention achieves mechanism replacement while ensuring that the transmission distance remains unchanged. The structure of the sub-shell ensures that the locking insert will not interfere with the movement of the transmission mechanism.

[0056] In some embodiments, the subshell 5 is spatially misaligned with the rotational plane of the eccentric drive member 32.

[0057] In some embodiments, a rotating roller 34 is sleeved on the actuating pin 33, and the position where the actuating pin 33 contacts the transmission rod 31 is where the rotating roller 34 rolls, reducing resistance.

[0058] In some embodiments, an extended guide section 111 is constructed at the connection between the top of the first shell 11 and the second shell 12. The guide section 111 of the first shell 11 can extend outward along both the length and width directions of the first shell 11, and the guide section 111 of the second shell 12 can extend outward along both the length and width directions of the second shell 12. A guide groove 112 extending along the length direction is provided on the guide section 111, and the transmission rod 31 is disposed in the guide groove 112, and the transmission rod 31 is limited and guided by the guide groove 112.

[0059] In some embodiments, the bottom of the guide groove 112 is provided with a mounting groove 113, the eccentric drive member 32 is disposed in the mounting groove 113, the transmission rod 31 has a toggle part 311 extending into the mounting groove 113, the drive groove 312 is provided on the toggle part 311, and the preset included angle is 90°.

[0060] In some embodiments, the first housing 11 is located on the side of the second housing 12 away from the handle 4, and the sub-housing 5 is located on the side of the second housing 12 away from the first housing 11. This makes the distance between the locking insert 6 and the inner wall of the door and window profile 2 near the handle 4 shorter, requiring a shorter length of locking screw, resulting in a shorter stroke of the locking nut and a shorter installation time. Therefore, it increases the length range of the locking screw and reduces the installation time, improving installation efficiency. At the same time, the locking insert 6 is located in the mounting groove 51 to prevent the locking insert 6 from falling into the profile groove 21 during installation.

[0061] In some embodiments, the bottom of the guide section 111 of the second shell 12 is provided with a mounting groove 121, and the top of the sub-shell 5 is inserted into the mounting groove 121. The bottom of the guide section 111 of the first shell 11 is provided with an insertion groove 114 extending to the mounting groove 121. The side wall of the sub-shell 5 near the top is provided with an extension section 52 extending into the insertion groove 114. By inserting the top of the sub-shell 5 into the mounting groove 121 and extending the extension section 52 of the side wall of the sub-shell 5 near the top into the insertion groove 114, the top of the sub-shell 5 and the shell assembly 1 are positioned, which facilitates assembly.

[0062] In some embodiments, a limiting groove 122 is provided at the bottom of the second shell 12, and a hook structure 53 is constructed on one side of the sub-shell 5 that extends into the limiting groove 122. By extending the hook structure 53 on one side of the sub-shell 5 into the limiting groove 122, the bottom of the sub-shell 5 is positioned with the shell assembly 1, which facilitates assembly.

[0063] In some embodiments, the first shell 11 and / or the second shell 12 are provided with through holes 115, and a locking member 7 is provided through the through holes 115. The end of the locking member 7 away from the head 71 is locked with a clamping member 8. The clamping member 8 is hung on the inner wall of the profile slot 21 to fix the shell assembly 1 to the inner wall of the profile slot 21. The first shell 11 and / or the second shell 12 are provided with an anti-rotation structure 116 that abuts against the clamping member 8 to prevent the clamping member 8 from rotating.

[0064] In some embodiments, the inner structure of the mounting groove 51 has a first guide protrusion 511, and the outer wall of the locking insert 6 has a first guide groove 61 for guiding the first guide protrusion 511.

[0065] In some embodiments, the outer wall of the locking insert 6 is configured with a second guide protrusion, and the inner structure of the mounting groove 51 is configured with a second guide groove to guide the second guide protrusion.

[0066] In summary, those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0067] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A transmission box, characterized in that, The transmission box includes: Housing assembly (1); A lever transmission mechanism (3) is disposed within the housing assembly (1), and the lever transmission mechanism (3) has a mounting hole (321) for inserting a square shaft (41) of the handle (4). The sub-shell (5) is mounted on the profile groove (21) of the door and window profile (2) and is located on the side of the shell assembly (1) facing the handle (4). The side of the sub-shell (5) facing the handle (4) has a mounting groove (51). The locking insert (6) is slidably disposed in the mounting groove (51); The housing assembly (1) includes a first sub-shell (11) and a second sub-shell (12) that are interlocked. The lever transmission mechanism (3) includes a transmission rod (31) and an eccentric drive member (32). The transmission rod (31) is movably disposed between the first sub-shell (11) and the second sub-shell (12) along the length direction. The subshell (5) and the eccentric drive (32) are spatially misaligned in the plane of rotation; The top of the first shell (11) and the second shell (12) are both constructed with outwardly extending guide sections (111). The first sub-shell (11) is located on the side of the second sub-shell (12) away from the handle (4), and the sub-shell (5) is located on the side of the second sub-shell (12) away from the first sub-shell (11); The bottom of the guide section (111) of the second shell (12) is provided with a snap-fit ​​groove (121), and the top of the sub-shell (5) is inserted into the snap-fit ​​groove (121). The bottom of the guide section (111) of the first shell (11) is provided with an insertion groove (114) extending to the snap-fit ​​groove (121). The side wall of the sub-shell (5) near the top is provided with an extension section (52) extending into the insertion groove (114). The bottom of the second shell (12) is provided with a limiting groove (122), and one side of the sub-shell (5) is provided with a hook structure (53) that extends into the limiting groove (122).

2. The transmission box according to claim 1, characterized in that, The transmission rod (31) has a drive groove (312) at a preset angle to its length direction. The eccentric drive member (32) is rotatably mounted on the second housing (12). The mounting hole (321) is constructed at the rotation center of the eccentric drive member (32). The end of the eccentric drive member (32) away from the rotation center is provided with a toggle pin (33) that can be inserted into the drive groove (312).

3. The transmission box according to claim 2, characterized in that, The guide section (111) is provided with a guide groove (112) extending along the length direction, and the transmission rod (31) is disposed in the guide groove (112).

4. The transmission box according to claim 3, characterized in that, The bottom of the guide slide (112) is provided with an installation groove (113), the eccentric drive member (32) is disposed in the installation groove (113), the transmission rod (31) has a toggle part (311) extending into the installation groove (113), the drive slide (312) is provided on the toggle part (311), and the preset included angle is 90°.

5. The transmission box according to claim 2, characterized in that, The first shell (11) and / or the second shell (12) have through holes (115), and a locking member (7) is provided in the through hole (115). A clamping member (8) is locked at the end of the locking member (7) away from the head (71). The clamping member (8) is hung on the inner wall of the profile slot (21). The first shell (11) and / or the second shell (12) are provided with an anti-rotation structure (116) that abuts against the clamping member (8).

6. The transmission box according to claim 1, characterized in that, The mounting groove (51) has a first guide protrusion (511) inside, and the outer wall of the locking insert (6) has a first guide groove (61) for guiding the first guide protrusion (511); and / or, the outer wall of the locking insert (6) has a second guide protrusion, and the mounting groove (51) has a second guide groove for guiding the second guide protrusion inside.

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