Lower transmission gear structure and injection mold thereof

Abstract

The utility model discloses a lower transmission gear structure and an injection mold thereof, and relates to the technical field of roller shutter door transmission gears, the lower transmission gear structure comprises a plurality of transmission gears, each transmission gear comprises a gear disc, the outer surface of each gear disc is provided with a plurality of teeth, the teeth are sequentially and annularly arranged, two sides of each gear disc are respectively and fixedly provided with an anti-falling plate, and each anti-falling plate is provided with an anti-falling groove; a plurality of annularly-arranged penetrating grooves are formed in the two anti-disengaging plates, and a plurality of impurity discharging and drainage grooves are formed in the outer surface of the gear disc. The anti-falling plates are arranged on the two sides of the transmission gear (namely the two sides of the chain meshing position), the position of the chain on the transmission gear is limited, the risk that the chain is separated from the transmission gear is reduced, the stability of meshing of the chain and teeth is improved, and the service life of the chain is prolonged. The friction force between the chain and the anti-falling plate can be obviously reduced through the anti-damage balls arranged on the anti-falling plate, the energy loss is reduced, the transmission efficiency is improved, the abrasion of the chain and the anti-falling plate is reduced, and the service life of the chain is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling shutter door transmission gears, in particular to a lower transmission gear structure and an injection mold thereof. Background Art

[0002] The transmission gear for rolling shutter doors is a gear device specially designed for the opening and closing operation of rolling shutter doors. The design of this gear is intended to improve the mechanical efficiency of the transmission. This gear is usually installed in the transmission system of the rolling shutter door and is usually driven by a chain or toothed belt to convert the rotational motion of the motor into the lifting motion of the door body. The design of the transmission gear for rolling shutter doors takes into account its special working environment and usage requirements to ensure long-term stable and efficient operation.

[0003] Gears are commonly used transmission parts for rolling shutter doors and are particularly important in the structure of rolling shutter doors. Occasionally, the chain will detach from the gears between the chain and the gears, which will cause a series of problems, affecting the normal use and stability of the rolling shutter door and requiring frequent maintenance. The existing gears cannot reduce the occurrence of the chain detaching from the gears. Utility Model Content

[0004] The purpose of the utility model is to provide a lower transmission gear structure and an injection mold thereof, which solves the problem that the existing lower transmission gear structure cannot reduce the occurrence of the phenomenon of the chain being separated from the lower transmission gear structure.

[0005] The utility model solves the above technical problems through the following technical solutions, and the utility model includes:

[0006] Multiple transmission gears, the transmission gears include a gear plate, the outer surface of the gear plate is provided with multiple teeth, the multiple teeth are arranged in a ring shape in sequence, anti-slip plates are fixed on both sides of the gear plate, and the interior of the two anti-slip plates is provided with multiple ring-shaped through grooves.

[0007] Preferably, a plurality of debris drainage grooves are provided on the outer surface of the gear plate, and a plurality of debris drainage holes arranged in a ring are provided inside the two anti-slip plates.

[0008] Preferably, the plurality of impurity removal holes respectively correspond to the notches of the plurality of impurity removal drainage grooves.

[0009] Preferably, a plurality of rolling grooves are provided on one side of the two anti-slip plates, and anti-damage balls are movably connected inside the plurality of rolling grooves.

[0010] A lower transmission gear structure injection mold includes a mold part, wherein the mold part includes a first fixed plate and a second fixed plate, one side of the first fixed plate is provided with a female template through a stripping plate, and one side of the second fixed plate is provided with a male template.

[0011] Preferably, two spacer plates are provided on one side of the second fixing plate, a support plate is provided on one side of the two spacer plates, and the male template is provided on the inner side of the support plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model limits the position of the chain on the transmission gear by arranging anti-slip plates on both sides of the transmission gear (i.e., on both sides of the chain meshing position), helps to reduce the risk of the chain detaching from the transmission gear and increases the stability of the chain and the teeth in meshing. The anti-damage balls arranged on the anti-slip plates can significantly reduce the friction between the chain and the anti-slip plates, reduce energy loss, improve transmission efficiency, reduce wear of the chain and the anti-slip plates, and extend the service life of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the disassembly of the utility model;

[0016] Figure 3 for Figure 2 Right view of;

[0017] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0018] The numbers in the figure represent:

[0019] 1. Transmission gear; 11. Gear plate; 12. Teeth; 13. Anti-slip plate; 14. Through groove; 15. Drainage groove for debris removal; 16. Drainage hole; 17. Rolling groove; 18. Anti-damage ball bearing; 2. Mold; 21. First fixed plate; 22. Second fixed plate; 23. Female mold plate; 24. Male mold plate; 25. Spacer plate; 26. Support plate. DETAILED DESCRIPTION

[0020] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0021] This embodiment provides a technical solution: a lower transmission gear structure and its injection mold, such as Figure 3 and Figure 4As shown, it includes multiple transmission gears 1, and the transmission gear 1 includes a gear plate 11. The two sides of the gear plate 11 are inclined, which facilitates the smooth sliding of impurities around the gear plate 11, and prevents impurities from accumulating on both sides of the gear plate 11 and getting stuck between the gear plate 11 and the chain or belt, causing accelerated wear of the chain or belt. The outer surface of the gear plate 11 is provided with a plurality of teeth 12, and the two sides of the teeth 12 are also inclined. Impurities at the position where the chain and the teeth 12 fit together can slide down along the teeth 12, and the multiple teeth 12 are arranged in a circular manner in sequence. The two anti-slip plates 13 are arranged in a ring shape, and anti-slip plates 13 are fixed on both sides of the gear plate 11. The anti-slip plates 13 on both sides of the teeth 12 and the gear plate 11 can help reduce the risk of the chain escaping from the teeth 12, and at the same time increase the stability of the chain during the engagement of the teeth 12, thereby ensuring the normal operation and use of the rolling door. The interior of the two anti-slip plates 13 is provided with a plurality of annularly arranged through grooves 14, and impurities sliding down from both sides of the gear plate 11 can fall through the through grooves 14, thereby preventing impurities from accumulating between the anti-slip plates 13 and the gear plate 11.

[0022] like Figure 3 and Figure 4 As shown, the outer surface of the gear plate 11 is provided with a plurality of impurity drainage grooves 15, and the impurity drainage grooves 15 are arranged between every two adjacent teeth 12, so that the impurity particles falling between the teeth 12 on the outer surface of the gear plate 11 are introduced into the impurity drainage grooves 15 and fall out of the gear plate 11 along the inclined direction of the impurity drainage grooves 15, so as to prevent the impurity particles from affecting the normal operation and service life of the chain. The interior of the two anti-slip plates 13 is provided with a plurality of impurity drainage holes 16 arranged in an annular shape, and the plurality of impurity drainage holes 16 are respectively connected to the notches of the plurality of impurity drainage grooves 15. Correspondingly, a plurality of rolling grooves 17 are provided on one side of the two anti-slip plates 13, and anti-damage balls 18 are movably connected inside the plurality of rolling grooves 17. The anti-damage balls 18 can serve as rolling elements, which can significantly reduce the friction between the chain and the anti-slip plates 13, reduce energy loss, improve transmission efficiency, make the chain more stable when the gears move, reduce vibration and noise, and thus improve the smoothness of the overall operation. Due to the reduction in friction, the wear of the chain and the anti-slip plates 13 will be reduced, thereby extending their service life and reducing the frequency of maintenance and replacement.

[0023] A lower transmission gear structure injection mold includes a mold part 2, and the mold part 2 includes a first fixed plate 21 and a second fixed plate 22. A female template 23 is provided on one side of the first fixed plate 21 through a stripping plate, and a male template 24 is provided on one side of the second fixed plate 22. Two spacer plates 25 are provided on one side of the second fixed plate 22, an upper ejector plate and a lower ejector plate are provided between the two spacer plates 25, and four stop pins are provided between the two spacer plates 25. A supporting plate 26 is provided on one side of the two spacer plates 25, and the male template 24 is provided on the inner side of the supporting plate 26. The structure of the transmission gear 1 except the anti-damage ball 18 is injection molded using the male template 24 and the female template 23. Later, the anti-damage ball 18 is embedded in the rolling groove 17 using existing technology, and the transmission gear 1 can be completely manufactured.

[0024] When in use, the chain is installed on the transmission gear 1, meshing with the teeth 12 and placing it between the two anti-slip plates 13. The anti-slip plates 13 are used to limit the position of the chain on the transmission gear 1, helping to reduce the risk of the chain detaching from the transmission gear 1 and increase the stability of the engagement between the chain and the teeth 12. The anti-damage balls 18 set on the anti-slip plates 13 can significantly reduce the friction between the chain and the anti-slip plates 13, reduce energy loss, improve transmission efficiency, make the chain more stable when the transmission gear 1 moves, reduce vibration and noise, thereby improving the smoothness of the overall operation, and due to the reduction in friction, the wear of the chain and the anti-slip plates 13 will be reduced, thereby extending their service life and reducing the frequency of maintenance and replacement.

[0025] The meshing area between the chain and the transmission gear 1 and the area around the transmission gear 1 itself are the most common locations where foreign matter (such as dust, pebbles, metal chips, etc.) enters the chain and the transmission gear 1. Foreign matter on the side of the transmission gear 1 can fall out of the transmission gear 1 through the inclined edge of the gear plate 11 itself and the through groove 14 opened on the anti-slip plate 13. At the meshing position of the chain and the transmission gear 1, foreign matter will enter the debris drainage groove 15 and have the opportunity to be discharged from the inclined path of the debris drainage groove 15 and the debris drainage hole 16, thereby avoiding foreign matter interfering with the normal transmission and meshing of the chain and the transmission gear 1, effectively reducing foreign matter interference, and reducing the risk of the chain and the transmission gear 1 being detached.

[0026] The above are only preferred embodiments of the present invention and are intended to be illustrative rather than restrictive. Those skilled in the art will appreciate that many changes, modifications, and even equivalents may be made to the embodiments within the spirit and scope of the claims, all of which fall within the scope of protection of the present invention.

Claims

1. A lower transmission gear structure, characterized in that: include: A plurality of transmission gears (1) are provided, wherein the transmission gears (1) include a gear plate (11), the outer surface of the gear plate (11) is provided with a plurality of teeth (12), the plurality of teeth (12) are sequentially arranged in a ring shape, anti-slip plates (13) are fixed on both sides of the gear plate (11), and the interiors of the two anti-slip plates (13) are provided with a plurality of through grooves (14) arranged in a ring shape.

2. The lower transmission gear structure according to claim 1, characterized in that: The outer surface of the gear plate (11) is provided with a plurality of impurity drainage grooves (15), and the interiors of the two anti-slip plates (13) are both provided with a plurality of impurity drainage holes (16) arranged in a ring shape.

3. The lower transmission gear structure according to claim 2, characterized in that: The plurality of impurity removal holes (16) respectively correspond to the notches of the plurality of impurity removal drainage grooves (15).

4. The lower transmission gear structure according to claim 3, characterized in that: One side of the two anti-slip plates (13) is provided with a plurality of rolling grooves (17), and the interiors of the plurality of rolling grooves (17) are movably connected with anti-damage balls (18).

5. An injection mold for a lower transmission gear structure, the injection mold being applied to the lower transmission gear structure according to claim 4, characterized in that: The invention comprises a mold part (2), wherein the mold part (2) comprises a first fixing plate (21) and a second fixing plate (22), a female template (23) is provided on one side of the first fixing plate (21) through a stripping plate, and a male template (24) is provided on one side of the second fixing plate (22).

6. The lower transmission gear structure injection mold according to claim 5, characterized in that: Two spacer plates (25) are provided on one side of the second fixing plate (22), a support plate (26) is provided on one side of the two spacer plates (25), and the male template (24) is provided on the inner side of the support plate (26).

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