Plastic worm gear structure

Abstract

This utility model discloses a plastic worm gear structure, belonging to the field of gear structure technology. This solution utilizes the rotation of the gear assembly itself to drive the vertical column and the circular linkage plate to move, achieving oil supply through mechanical linkage. It does not require an external power device, saving energy and featuring a compact structure suitable for small equipment installation. Through the periodic cooperation between the protruding block of the circular linkage plate and the vertical moving ring, intermittent grease supply is achieved, avoiding continuous oil leakage. Combined with the sealing design of the one-way sealing plug and the inverted conical oil outlet hole, it ensures that grease is released only when meshing is required, reducing lubricant consumption. Furthermore, the heating wire in the conical guide chamber can heat the grease, solving the problem of grease solidification in low-temperature environments. At the same time, the oil brush bristles are in continuous contact with the worm assembly, which can evenly coat the worm surface and then carry it into the meshing area of ​​the gear assembly and worm assembly through meshing transmission, avoiding local dry friction, effectively reducing tooth surface wear, and extending the service life of the structure.

Description

Technical Field

[0001] This utility model relates to the field of gear structure technology, and in particular to a plastic worm gear structure. Background Technology

[0002] Worm gears are mechanical transmission structures composed of a worm and a worm wheel (a special gear that meshes with the worm). They are mainly used to transmit motion and power between spatially intersecting shafts, typically with an intersecting angle of 90 degrees. Plastic worm gears are widely used in light-load transmission scenarios such as smart homes, small appliances, and precision transmission equipment due to their advantages of light weight, low cost, good shock absorption and noise reduction, and convenient molding.

[0003] A transmission gear worm gear with Chinese patent number CN213981893U includes, from left to right, a first connecting body, a second connecting body, a third connecting body, a fourth connecting body, a fifth connecting body, a transmission body, a sixth connecting body, and a seventh connecting body. The diameter of the second connecting body is larger than the diameter of the first connecting body and smaller than the diameter of the third connecting body. This utility model has a simple structure, is easy to install, has high transmission precision, good transmission effect, high reliability, and long service life.

[0004] Traditional plastic worm gears rely on manual application of grease periodically. However, their smooth plastic surface has poor oil absorption, and the grease is easily lost quickly due to the centrifugal force or vibration of the gears during operation. This leads to frequent dry friction in the meshing area, which aggravates tooth surface wear and significantly shortens the service life. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a plastic worm gear structure that solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a plastic worm gear structure, including a gear assembly, a worm gear assembly meshing with the front end of the gear assembly, multiple vertical rods fixedly connected to the upper end of the gear assembly, a ring-shaped linkage plate fixedly connected to the upper end of the multiple vertical rods, an oil outlet hole opened at the upper end of the ring-shaped linkage plate, a small oil storage frame installed on the upper side of the meshing part of the gear assembly and the worm gear assembly, a conical guide chamber fixedly connected to the lower end of the small oil storage frame, an oil outlet fixedly connected to the lower end of the conical guide chamber, an inverted conical oil outlet hole fixedly connected to the inner end of the oil outlet, multiple vertical springs fixedly connected to the lower end of the multiple vertical springs, a vertical moving ring fixedly connected to the lower side of the vertical moving ring, and a one-way sealing plug fixedly connected to the upper side of the vertical moving ring.

[0007] As a further technical solution of this utility model, multiple vertical springs are arranged in a ring at equal intervals, and an electric heating wire is fixedly connected to the inner wall of the conical flow guide chamber.

[0008] As a further technical solution of this utility model, the one-way sealing plug and the inverted conical oil outlet are interlocked, and an overflow channel is provided between the vertical moving ring and the one-way sealing plug.

[0009] As a further technical solution of this utility model, a mounting side plate is fixedly connected to the upper left side of the small oil storage frame, and a bolt connector is threaded into the mounting side plate.

[0010] As a further technical solution of this utility model, the ring-shaped linkage plate and the vertical moving ring cooperate with each other, and the vertical moving ring, the overflow channel and the gap oil outlet are symmetrically arranged vertically.

[0011] As a further technical solution of this utility model, the lower end of the ring-shaped linkage plate is fixedly connected with multiple protruding blocks, and the lower ends of the multiple protruding blocks are arranged in a ring at equal intervals.

[0012] As a further technical solution of this utility model, multiple oil brush bristles are fixedly connected to the lower end of the protruding block, and the multiple oil brush bristles and the worm gear assembly are in contact with each other.

[0013] This utility model provides a plastic worm gear structure, which has the following advantages compared with the prior art: This design presents a plastic worm gear structure. The scheme utilizes the rotation of the gear assembly itself to drive the movement of a vertical rod and a circular linkage plate, achieving oil supply through mechanical linkage. No external power unit is required, saving energy and resulting in a compact structure suitable for small equipment installation. The periodic cooperation between the protruding block of the circular linkage plate and the vertical moving ring enables intermittent grease supply, preventing continuous oil leakage. Combined with a one-way sealing plug and an inverted conical oil outlet, the grease is ensured to be released only when meshing is required, reducing lubricant consumption. Furthermore, the heating wire within the conical guide chamber heats the grease, solving the problem of grease solidification at low temperatures and ensuring fluidity. Simultaneously, the continuous contact between the oil brush bristles and the worm assembly ensures that the grease is evenly applied to the worm surface and then carried into the meshing area between the gear assembly and the worm assembly through meshing transmission, avoiding localized dry friction, effectively reducing tooth surface wear, and extending the structure's service life. Attached Figure Description

[0014] Figure 1 This is a top view schematic diagram of the worm gear structure of this utility model; Figure 2 This is a bottom view schematic diagram of the worm gear structure of this utility model; Figure 3 This is a schematic diagram of the small oil storage frame structure of this utility model; Figure 4 This is a schematic diagram of the oil outlet structure of this utility model.

[0015] In the picture: 1. Gear assembly; 2. Worm gear assembly; 3. Vertical column; 4. Circular linkage plate; 5. Small oil reservoir; 6. Mounting side plate; 7. Heating wire; 8. Gap oil outlet; 9. Protruding block; 10. Oil brush bristles; 11. Oil outlet bottom port; 12. Inverted conical oil outlet; 13. Vertical spring; 14. Vertical moving ring; 15. One-way sealing plug; 16. Bolted connector; 17. Conical guide chamber. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 This utility model provides a plastic worm gear structure technical solution: including a gear assembly 1, a worm gear assembly 2 meshing with the front end of the gear assembly 1, multiple vertical rods 3 fixedly connected to the upper end of the gear assembly 1, a ring-shaped linkage plate 4 fixedly connected to the upper end of the multiple vertical rods 3, an oil outlet hole 8 opened at the upper end of the ring-shaped linkage plate 4, a small oil storage frame 5 installed on the upper side of the meshing part of the gear assembly 1 and the worm gear assembly 2, a conical guide chamber 17 fixedly connected to the lower end of the small oil storage frame 5, an oil outlet bottom port 11 fixedly connected to the lower end of the conical guide chamber 17, an inverted conical oil outlet hole 12 fixedly connected to the inner end of the oil outlet bottom port 11, multiple vertical springs 13 fixedly connected to the lower end of the multiple vertical springs 13, a vertical moving ring 14 fixedly connected to the lower end of the multiple vertical springs 13, and a one-way sealing plug 15 fixedly connected to the upper side of the vertical moving ring 14.

[0018] Please see Figures 2-4 Multiple vertical springs 13 are arranged in a ring at equal intervals. The one-way sealing plug 15 and the inverted conical oil outlet 12 are engaged with each other. An overflow channel is opened between the vertical moving ring 14 and the one-way sealing plug 15. The upper left side of the small oil storage frame 5 is fixedly connected to the mounting side plate 6. The mounting side plate 6 is internally threaded with a bolt connector 16. The ring-shaped linkage plate 4 and the vertical moving ring 14 cooperate with each other.

[0019] By setting the protruding block 9 of the ring-shaped linkage plate 4 to periodically cooperate with the vertical moving ring 14, the grease is supplied intermittently to avoid continuous oil leakage. With the sealing design of the one-way sealing plug 15 and the inverted conical oil outlet 12, the grease is ensured to be released only when engagement is required, reducing the consumption of lubricating materials. The small oil storage frame 5 is fixed by the mounting side plate 6 and bolt connector 16, which facilitates disassembly and replenishment of grease. All components outside the ring-shaped linkage plate 4 are made of ultra-lightweight materials.

[0020] Please see Figures 2-4 The inner wall of the conical guide chamber 17 is fixedly connected with an electric heating wire 7. The vertical moving ring 14 and the overflow channel and the gap oil outlet 8 are symmetrically arranged vertically. The lower end of the ring-shaped linkage plate 4 is fixedly connected with multiple protruding blocks 9. The lower ends of the multiple protruding blocks 9 are arranged in a ring at equal intervals. The lower ends of the protruding blocks 9 are fixedly connected with multiple oil brush bristles 10. The multiple oil brush bristles 10 and the worm gear assembly 2 are in contact with each other.

[0021] The heating wire 7 inside the conical guide chamber 17 can heat the grease, solving the problem of grease solidification in low-temperature environments and ensuring fluidity. The cooperation between the overflow channel and the gap oil outlet 8 ensures a stable grease delivery path, unaffected by equipment vibration. The oil brush bristles 10 are in continuous contact with the worm gear assembly 2, which can evenly coat the grease on the worm gear surface. Then, through meshing transmission, the grease is carried into the meshing area of ​​the gear assembly 1 and the worm gear assembly 2, avoiding local dry friction, effectively reducing tooth surface wear, and extending the service life of the structure.

[0022] The working principle of this utility model is as follows: In this solution, the gear assembly 1 and the worm gear assembly 2 are driven by an external motor to maintain a meshing transmission state. When the gear assembly 1 rotates, it will drive the ring-shaped linkage plate 4 to rotate synchronously through multiple vertical rods 3 fixed at the upper end. The small oil storage frame 5 is fixed to the corresponding position of the equipment through the mounting side plate 6 on the upper left end and the bolt connecting piece 16 with internal thread. The lubricating grease stored inside it will flow into the conical guide chamber 17 connected at the lower end. The electric current on the inner wall of the conical guide chamber 17... The heating element 7 can heat the grease, preventing it from solidifying at low temperatures and ensuring its fluidity. Under normal conditions, the inverted conical oil outlet 12 at the inner end of the oil outlet 11 engages with the one-way sealing plug 15 on the upper side of the vertical moving ring 14 to form a seal and prevent grease leakage. The vertical moving ring 14 is supported by multiple annularly distributed vertical springs 13 connected to its lower end, maintaining its engagement with the annular linkage plate 4. When the annular linkage plate 4 rotates with the gear assembly 1, the multiple annularly distributed protruding vertical springs fixed at its lower end... Block 9 periodically contacts and pushes the vertical moving ring 14 upward, causing the vertical spring 13 to compress. At this time, the one-way sealing plug 15 separates from the inverted conical oil outlet 12. The grease in the conical guide chamber 17 flows out through the oil outlet bottom 11, the overflow channel between the vertical moving ring 14 and the one-way sealing plug 15, and then through the gap oil outlet 8 opened at the upper end of the ring-shaped linkage plate 4. The flowing grease is absorbed by the multiple oil bristles 10 fixed at the bottom of the protruding block 9 at the lower end of the ring-shaped linkage plate 4. The oil bristles 10 are always... Maintaining contact with the worm gear assembly 2, as the worm gear assembly 2 rotates, the grease is evenly applied to the surface of the worm gear assembly 2 and carried into the meshing area of ​​the gear assembly 1 and the worm gear assembly 2 through the meshing transmission of the two, achieving continuous lubrication. When the protruding block 9 rotates away from the vertical moving ring 14, the vertical spring 13 returns to its original position, driving the vertical moving ring 14 and the one-way sealing plug 15 to move down. The one-way sealing plug 15 engages and seals with the inverted conical oil outlet 12 again, stopping the oil supply. This cycle repeats to complete intermittent precise lubrication.

[0023] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A plastic worm gear structure, characterized by, The system includes a gear assembly (1), the front end of which is meshed with a worm gear assembly (2). Multiple vertical rods (3) are fixedly connected to the upper end of the gear assembly (1). A circular linkage plate (4) is fixedly connected to the upper end of each of the multiple vertical rods (3). An oil outlet hole (8) is provided at the upper end of the circular linkage plate (4). A small oil reservoir (5) is installed on the upper side of the meshing point between the gear assembly (1) and the worm gear assembly (2). A conical flow guide chamber (17) is fixedly connected to the lower end. An oil outlet bottom port (11) is fixedly connected to the lower end of the conical flow guide chamber (17). An inverted conical oil outlet hole (12) is fixedly connected to the inner end of the oil outlet bottom port (11). A plurality of vertical springs (13) are fixedly connected to the lower end of the oil outlet bottom port (11). A vertical moving ring (14) is fixedly connected to the lower end of the plurality of vertical springs (13). A one-way sealing plug (15) is fixedly connected to the upper side of the vertical moving ring (14).

2. A plastic worm gear structure according to claim 1, wherein The multiple vertical springs (13) are arranged in a ring at equal intervals, and the inner wall of the conical flow guide chamber (17) is fixedly connected with an electric heating wire (7).

3. The plastic worm gear structure according to claim 1, wherein The one-way sealing plug (15) and the inverted conical oil outlet (12) are engaged with each other, and an overflow channel is provided between the vertical moving ring (14) and the one-way sealing plug (15).

4. The plastic worm gear structure according to claim 1, wherein The small oil storage frame (5) is fixedly connected to the upper left side of the mounting side plate (6), and the mounting side plate (6) is internally threaded with a bolt connector (16).

5. A plastic worm gear structure according to claim 3, wherein The circular linkage plate (4) and the vertical moving ring (14) cooperate with each other, and the vertical moving ring (14) and the overflow channel and the gap oil outlet (8) are symmetrically arranged vertically.

6. A plastic worm gear structure according to claim 1, wherein The lower end of the circular linkage plate (4) is fixedly connected to a plurality of protruding blocks (9), and the lower ends of the plurality of protruding blocks (9) are arranged in a ring at equal intervals.

7. A plastic worm gear structure according to claim 6, wherein The lower end of the protruding block (9) is fixedly connected to a plurality of oil bristles (10), and the plurality of oil bristles (10) and the worm gear assembly (2) are in contact with each other.

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