Range-extending transmission box

Abstract

The utility model belongs to the technical field of door and window hardware, and particularly discloses a range extending transmission box which comprises a first shell assembly, a driving module and a driven module meshed with the driving module, the driving module comprises a power gear arranged in the first shell assembly, the power gear is meshed with a transmission rack, and the transmission rack is driven by the power gear to move linearly; the driven module comprises a driven gear assembly meshed with at least one end of the transmission rack and a driven rack meshed with the driven gear assembly, and the transmission ratio of the driven gear assembly is configured to enable the linear motion speed of the driven rack to be larger than that of the transmission rack. The range-extending transmission box is compact in structure, can be quickly assembled, can greatly improve the transmission speed and the stroke of the output shaft in the transmission box, and can be matched with locking devices on more door and window frames.

Description

TECHNICAL FIELD

[0001] The utility model relates to door and window hardware technical field, concretely relates to a range extending transmission box. BACKGROUND

[0002] At present, many horizontal sliding doors and windows are equipped with transmission boxes to realize opening or closing, the user drives the gear installed in the wheel guard plate to rotate through the handle, then drives the sliding plate to move through the meshing of the gear and the rack on the sliding plate, and the opening or closing of the door and window is realized through the cooperation of the riveted and fixed anti-picking pin on the sliding plate and the locking device on the door and window frame.

[0003] But at present, most transmission boxes are installed in the limited cavity range on the door and window frame, and the conventional transmission boxes mostly adopt single-stage gear and rack, and the single-stage transmission is difficult to flexibly adjust the output speed and stroke, and when the gear in the wheel guard plate of the transmission box rotates, the movement range of the locking arm or output shaft is limited, so that the locking arm or output shaft can not cooperate with the locking device on the door and window frame to realize the closing of the door and window.

[0004] The utility model is just made based on the above situation. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of prior art, providing a range extending transmission box, the range extending transmission box is compact in structure, can be quickly assembled, and can greatly improve the transmission speed and stroke of the output shaft in the transmission box, and can be adapted to more locking devices on the door and window frame.

[0006] The utility model is realized through the following technical schemes:

[0007] A range extending transmission box, comprising a first shell assembly, a driving module, and a driven module meshing with the driving module, the driving module comprises a power gear arranged in the first shell assembly, the power gear is meshed with a transmission rack, and the transmission rack moves linearly under the driving of the power gear; the driven module comprises a driven gear assembly meshing with at least one end of the transmission rack and a driven rack meshing with the driven gear assembly, and the transmission ratio of the driven gear assembly is configured to make the linear motion speed of the driven rack greater than that of the transmission rack.

[0008] The range extending transmission box as described above, the driven gear assembly comprises coaxially arranged first driven gear and second driven gear, the first driven gear is meshed with the transmission rack, the second driven gear is meshed with the driven rack, and the pitch diameter of the second driven gear is greater than that of the first driven gear.

[0009] The range extending transmission box as claimed in claim 1, wherein the first housing assembly is detachably connected with a second housing assembly, and the transmission rack, the driven gear assembly and the driven rack are arranged inside the second housing assembly.

[0010] The range extending transmission box as claimed in claim 1, wherein both ends of the transmission rack are engaged with a driven gear assembly, and the two driven gear assemblies are respectively engaged with the teeth at both ends of the driven rack.

[0011] The range extending transmission box as claimed in claim 1, wherein a long hole is formed on the second housing assembly, and the power gear is engaged with the transmission rack through the long hole.

[0012] The range extending transmission box as claimed in claim 1, wherein a first protruding tooth is arranged on the middle part of the transmission rack and is perpendicular to the transmission rack and matches the power gear, and second protruding teeth are arranged on both ends of the transmission rack and are engaged with the driven gear assembly, and the power gear is engaged with the first protruding tooth through the long hole.

[0013] The range extending transmission box as claimed in claim 1, wherein a clamping structure is arranged between the first housing assembly and the second housing assembly, and the clamping structure comprises a clamping block arranged on the first housing assembly and a clamping groove arranged on the second housing assembly and matched with the clamping block.

[0014] The range extending transmission box as claimed in claim 1, wherein the first housing assembly comprises a first housing and a second housing, the clamping block is arranged below the first housing and the second housing and is outwardly turned to the same side, and a first clamping groove and a second clamping groove matched with the clamping block are correspondingly arranged on the second housing assembly; the first clamping groove is a notch arranged on the second housing assembly and distributed along one side of the long hole in the radial direction; and the second clamping groove is a protruding rib arranged on the second housing assembly and distributed along the other side of the long hole in the radial direction.

[0015] The range extending transmission box as claimed in claim 1, wherein the first housing assembly further comprises a third housing arranged between the first housing and the second housing, and a cavity accommodating the power gear is arranged in the third housing.

[0016] The range extending transmission box as claimed in claim 1, wherein output shafts are arranged at both ends of the driven rack, and long strip-shaped limiting grooves matched with the output shafts are correspondingly arranged on the second housing assembly.

[0017] Compared with the prior art, the range extending transmission box has the following advantages:

[0018] 1. The range extending transmission box has a simple structure, realizes multiplication of output speed and output shaft stroke through gear set transmission ratio design, and simplifies assembly process through modular housing assembly, thereby solving the problems of low transmission efficiency, heavy structure and inconvenient disassembly in the prior art.

[0019] 2. The driven gear assembly of this utility model adopts a coaxial double gear structure (first driven gear and second driven gear). The pitch circle diameter of the first driven gear is smaller than that of the second driven gear, thereby doubling the transmission speed and output shaft stroke to adapt to high precision or large stroke requirements.

[0020] 3. The shell components of this utility model are quickly assembled by using outward-folding locking blocks, notches, and protruding ribs on the same side, which improves the efficiency of assembly and disassembly.

[0021] 4. The elongated limiting groove of this utility model cooperates with the output shaft to avoid movement deviation and extend service life. Attached Figure Description

[0022] To more clearly illustrate the structural features and effects of this utility model, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the structure of the range extender transmission box of this utility model;

[0024] Figure 2 This is a schematic diagram of the assembly structure of the range extender transmission box of this utility model;

[0025] Figure 3 This is an exploded view of the range extender transmission box structure of this utility model;

[0026] Figure 4 for Figure 2 Enlarged diagram of point A in the middle. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0028] like Figures 1-4 As shown, a range extender transmission box includes a first housing assembly 1, a drive module 2, and a driven module 3 meshing with the drive module 2. The drive module 2 includes a power gear 21 disposed in the first housing assembly 1, the power gear 21 meshing with a transmission rack 22, and the transmission rack 22 moving linearly under the drive of the power gear 21. The driven module 3 includes a driven gear assembly 31 meshing with at least one end of the transmission rack 22 and a driven rack 32 meshing with the driven gear assembly 31. The transmission ratio of the driven gear assembly 31 is configured such that the linear speed of the driven rack 32 is greater than the linear speed of the transmission rack 22.

[0029] The utility model discloses a simple structure of range extending transmission box, and through the transmission ratio design of driven gear assembly 31, the multiplication of output speed and output shaft stroke is realized, and through the modularization of shell assembly 2, the assembly process is simplified, and the problems of low transmission efficiency, heavy structure and inconvenient disassembly in the prior art are solved.

[0030] Specifically, the driven gear assembly 31 in the utility model includes coaxially arranged first driven gear 311 and second driven gear 312, the first driven gear 311 is engaged with the transmission rack 22, the second driven gear 312 is engaged with the driven rack 32, and the pitch circle diameter of the second driven gear 312 is greater than the pitch circle diameter of the first driven gear 311.

[0031] In the utility model, the pitch circle diameter of the first driven gear is less than the second driven gear, forming 1:N (N>1) transmission ratio, realizing the multiplication of transmission speed and output shaft stroke, to adapt to high-precision or large-stroke demand scenarios.

[0032] As shown in Figure 2 and Figure 3 The utility model discloses a first shell assembly 1 detachably connected with second shell assembly 4, and the transmission rack 22, driven gear assembly 31 and driven rack 32 are arranged inside the second shell assembly 4.

[0033] As shown in Figure 2 and Figure 3 The utility model discloses that the both ends of transmission rack 22 are engaged with a driven gear assembly 31, and the two driven gear assemblies 31 are engaged with the teeth of the two ends of driven rack 32 respectively.

[0034] In the embodiment, the second shell assembly 4 is provided with a long hole 41, and the power gear 21 is engaged with the transmission rack 22 through the long hole 41.

[0035] Specifically, the middle part of the transmission rack 22 is provided with a first convex tooth 221 perpendicular to the transmission rack 22 and matched with the power gear 21, and the two ends of the transmission rack 22 are provided with a second convex tooth 222 engaged with the driven gear assembly 31, and the power gear 21 is engaged with the first convex tooth 22 through the long hole 41.

[0036] As shown in Figures 2-3 The utility model discloses a first shell assembly 1 and second shell assembly 4 between being equipped with the clamping structure 5, and the clamping structure 5 includes the clamping block 51 of being equipped with on the first shell assembly 1 and the clamping groove 52, 53 of being equipped with on the second shell assembly 4 and with the clamping block 51 adaptation.

[0037] Specifically, the first shell assembly 1 includes a first shell 11, a second shell 12, and a clamping block 51 arranged below the first shell 11 and the second shell 12 and outwardly turned to the same side, and the second shell assembly 4 is correspondingly provided with a first clamping groove 52 and a second clamping groove 53 matched with the clamping block 51, the first clamping groove 52 is a notch 521 arranged on the second shell assembly 4 and distributed along one side of the long hole 41 in the radial direction, and the second clamping groove 53 is a convex rib 531 arranged on the second shell assembly 4 and distributed along the other side of the long hole 41 in the radial direction. The lower part of the convex rib 531 forms a clamping position of the second clamping groove 53, when the clamping block 51 of the first shell 11 and the second shell 12 is installed and clamped in the long hole 41, one side of the clamping block 51 is clamped below the side of the long hole 41 through the notch 521, and the other side of the clamping block 51 is clamped above the other side of the long hole 41 through the convex rib 531, and when installing, the first shell assembly 1 can be buckled by applying force in one direction, which is easy and simple to operate.

[0038] The first shell assembly 1 of the embodiment further includes a third shell 13 arranged between the first shell 11 and the second shell 12, and the third shell 13 is provided with a cavity 131 for accommodating the power gear 21.

[0039] As shown in Figure 2 and Figure 3 The utility model discloses a driven rack 32 is provided with output shaft 321 at both ends, and the second shell assembly 4 is correspondingly provided with long strip shape's limit slot 42 matched with output shaft 321. The output shaft at both ends of the driven rack is matched with the long strip shape's limit slot 42 on the second shell assembly, ensures that the movement range is controllable, avoids movement deviation, and prolongs the service life.

[0040] The above embodiments are typical application modes of the utility model, and those skilled in the art can adjust the transmission ratio, materials and connection modes according to actual needs, and such improvements all fall within the protection scope of the utility model.

Claims

1. A range extender drive box, comprising a first housing assembly (1), a drive module (2), and a driven module (3) engaging with the drive module (2), characterized in that... The drive module (2) includes a power gear (21) disposed in the first housing assembly (1), the power gear (21) meshing with a transmission rack (22), the transmission rack (22) moving in a straight line under the drive of the power gear (21); the driven module (3) includes a driven gear assembly (31) meshing with at least one end of the transmission rack (22) and a driven rack (32) meshing with the driven gear assembly (31), the transmission ratio of the driven gear assembly (31) being configured such that the linear speed of the driven rack (32) is greater than the linear speed of the transmission rack (22).

2. The range extender drive box according to claim 1, characterized in that... The driven gear assembly (31) includes a first driven gear (311) and a second driven gear (312) arranged coaxially. The first driven gear (311) meshes with the transmission rack (22), and the second driven gear (312) meshes with the driven rack (32). The pitch circle diameter of the second driven gear (312) is larger than that of the first driven gear (311).

3. The range extender drive box according to claim 1, characterized in that... The first housing assembly (1) is detachably connected to the second housing assembly (4), and the transmission rack (22), driven gear assembly (31) and driven rack (32) are all located inside the second housing assembly (4).

4. The range extender drive box according to claim 3, characterized in that... Both ends of the transmission rack (22) are engaged with a driven gear assembly (31), and the two driven gear assemblies (31) are respectively engaged with the teeth at both ends of the driven rack (32).

5. The range extender drive box according to claim 4, characterized in that... The second housing assembly (4) has an elongated hole (41) on it, and the power gear (21) meshes with the transmission rack (22) through the elongated hole (41).

6. The range extender drive box according to claim 5, characterized in that... The transmission rack (22) has a first tooth (221) in the middle that is perpendicular to the transmission rack (22) and matches the power gear (21). The two ends of the transmission rack (22) have second teeth (222) that mesh with the driven gear assembly (31). The power gear (21) meshes with the first tooth (221) through the elongated hole (41).

7. The range extender drive box according to claim 3, characterized in that... A locking structure (5) is provided between the first housing assembly (1) and the second housing assembly (4). The locking structure (5) includes a locking block (51) on the first housing assembly (1) and a locking groove (52, 53) on the second housing assembly (4) that is adapted to the locking block (51).

8. The range extender drive box according to claim 7, characterized in that... The first housing assembly (1) includes a first housing (11) and a second housing (12). The locking block (51) is located below the first housing (11) and the second housing (12) and is turned outward to the same side. The second housing assembly (4) is provided with a first locking groove (52) and a second locking groove (53) that cooperate with the locking block (51). The first locking groove (52) is a notch (521) provided on the second housing assembly (4) along one radial side of the elongated hole (41). The second locking groove (53) is a rib (531) provided on the second housing assembly (4) along the other radial side of the elongated hole (41).

9. The range extender drive box according to claim 8, characterized in that... The first housing assembly (1) further includes a third housing (13) disposed between the first housing (11) and the second housing (12), and the third housing (13) has a cavity (131) for accommodating the power gear (21).

10. The range extender drive box according to claim 4, characterized in that... Both ends of the driven rack (32) are provided with output shafts (321), and the second housing assembly (4) is provided with a corresponding elongated limiting groove (42) that cooperates with the output shafts (321).

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