Miniature worm gear reducer

Abstract

The utility model discloses a miniature worm gear reducer relates to worm gear reducer technical field, including box and bottom cover, the bottom cover is provided with bottom cover in the box downside, the bottom cover one side surface is installed with oil drain bolt, the oil drain bolt one end inboard is provided with inflatable gasket, the oil drain bolt is provided with one -way inflation valve away from inflatable gasket one end. The utility model discloses the oil drain bolt, inflatable gasket and one -way inflation valve of setting, make the oil drain bolt install on the bottom cover, through one -way inflation valve to the inflation of inflatable gasket inboard, make inflatable gasket swell up, and then seal processing is carried out to the contact end of oil drain bolt and bottom cover inboard, and inflatable gasket can carry out the plugging seal processing to the gap between oil drain bolt and bottom cover, avoids the gap between oil drain bolt and bottom cover and appears the oil leakage of causing after long -time use.

Description

Technical Field

[0001] This utility model relates to the field of worm gear reducer technology, specifically a miniature worm gear reducer. Background Technology

[0002] Worm gear reducers, also known as worm gear reducers, are devices used to transmit low power. When replacing spare parts with a worm gear reducer, a running-in and load test must be performed before it is put into formal use. Existing worm gear reducers have drain bolts on the reducer housing; however, after prolonged use, these bolts can loosen, allowing lubricating oil to leak out and affecting the reducer's stable operation. Utility Model Content

[0003] The technical problem this utility model aims to solve is to overcome existing defects and provide a miniature worm gear reducer. Through the inclusion of a drain bolt, an inflatable sealing gasket, and a one-way inflation valve, the drain bolt is installed on the bottom cover. Inflation of the sealing gasket via the one-way inflation valve causes it to expand, sealing the contact point between the drain bolt and the bottom cover. The inflatable sealing gasket also seals any gaps between the drain bolt and the bottom cover, preventing oil leakage after prolonged use. This effectively solves the problems described in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a miniature worm gear reducer, comprising a housing and a bottom cover. The bottom cover is provided on the lower side of the housing, and an oil drain bolt is installed on one side of the bottom cover. An air-filled sealing gasket is provided on the inner side of one end of the oil drain bolt, and a one-way air-filled valve is provided on the end of the oil drain bolt away from the air-filled sealing gasket. A support shaft is provided on the inner side of the housing, and a wheel bearing is sleeved on the outer side of the support shaft. An output shaft is provided on the outer side of the wheel bearing, and a worm gear is keyed to the outer side of the output shaft. A worm is provided on the lower side of the worm gear.

[0005] Furthermore, rod bearings are fitted at both ends of the worm gear, and an input shaft is provided at one end of the worm gear. An oil seal is provided on the input shaft near the rod bearing.

[0006] Furthermore, a top cover is provided on the upper side of the housing, and an exhaust cover is installed on the top cover.

[0007] Furthermore, a groove is provided on the inner side of the housing corresponding to the position of the worm gear, and lubricating oil is injected into the housing.

[0008] Furthermore, the top cover is bolted to the housing, and a sealing ring is provided between the contact surfaces of the top cover and the housing.

[0009] Furthermore, a sealing ring is provided between the bottom cover and the contact surface of the housing.

[0010] This invention utilizes a drain bolt, an inflatable sealing gasket, and a one-way inflation valve. After the drain bolt is installed on the bottom cover, air is inflated into the inside of the inflatable sealing gasket through the one-way inflation valve, causing the gasket to expand and seal the contact point between the drain bolt and the inside of the bottom cover. The inflatable sealing gasket also seals the gap between the drain bolt and the bottom cover, preventing oil leakage caused by gaps that may appear after prolonged use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0012] Figure 2 This utility model Figure 1 Schematic diagram of the right side of the drain plug;

[0013] Figure 3 This utility model Figure 2 Schematic diagram of the main cross-sectional structure of the inflatable sealing gasket.

[0014] In the diagram: 1. Input shaft; 2. Worm gear; 3. Exhaust cover; 4. Worm; 5. Rod bearing; 6. Oil drain bolt; 7. Bottom cover; 8. Support shaft; 9. Housing; 10. Output shaft; 11. Wheel bearing; 12. Top cover; 13. Wheel groove; 14. Oil seal; 15. Inflation gasket; 16. One-way inflation valve. Detailed Implementation

[0015] Please see Figure 1-3 This embodiment provides a technical solution: a miniature worm gear reducer, including a housing 9 and a bottom cover 7. The bottom cover 7 is provided on the lower side of the housing 9. An oil drain bolt 6 is installed on one side of the bottom cover 7. An air-filled sealing gasket 15 is provided on the inner side of one end of the oil drain bolt 6. A one-way air-filled valve 16 is provided on the end of the oil drain bolt 6 away from the air-filled sealing gasket 15. A support shaft 8 is provided on the inner side of the housing 9. A wheel bearing 11 is sleeved on the outer side of the support shaft 8. An output shaft 10 is provided on the outer side of the wheel bearing 11. A worm gear 2 is keyed to the outer side of the output shaft 10. A worm 4 is provided on the lower side of the worm gear 2.

[0016] like Figure 1-3As shown, during use, the input shaft 1 is connected to the motor, which drives the input shaft 1 to rotate, thereby causing the worm 4 to rotate. The worm 4 drives the worm wheel 2 to rotate, which in turn drives the output shaft 10 to rotate, thus reducing the input speed of the motor. When the temperature rises, the lubricating oil inside the housing 9 is prone to generating gas, which can be released by opening the vent cover 3. The rod bearing 5 provides stable support for the worm 4, ensuring its stable rotation. The worm wheel 2 is stably connected to the output shaft 10, allowing its rotation to drive the output shaft 10. After prolonged use, the drain bolt 6 may loosen, creating a gap between it and the housing 9, which could lead to oil leakage. After the drain bolt 6 is installed on the housing 9, air is injected into the air sealing gasket 15 through the one-way air valve 16. This causes the air sealing gasket 15 to expand and seal the gap between the drain bolt 6 and the housing 9, preventing lubricating oil leakage.

[0017] Both ends of the worm gear 4 are fitted with rod bearings 5, and one end of the worm gear 4 is provided with an input shaft 1. An oil seal 14 is provided on the input shaft 1 near the rod bearing 5.

[0018] The top cover 12 is provided on the upper side of the box body 9, and an exhaust cover 3 is installed on the top cover 12.

[0019] A groove 13 is provided on the inner side of the housing 9 corresponding to the position of the worm gear 2, and lubricating oil is injected into the housing 9.

[0020] The top cover 12 is connected to the box body 9 by bolts, and a sealing ring is provided between the contact surfaces of the top cover 12 and the box body 9.

[0021] A sealing ring is provided between the contact surface of the bottom cover 7 and the box body 9.

[0022] During use, the input shaft 1 is connected to the motor, which drives the input shaft 1 to rotate, thereby causing the worm 4 to rotate. The worm 4 drives the worm wheel 2 to rotate, which in turn drives the output shaft 10 to rotate, thus reducing the input speed of the motor. When the temperature rises, the lubricating oil inside the housing 9 is prone to producing gas, which can be released by opening the vent cover 3. The rod bearing 5 provides stable support for the worm 4, ensuring its stable rotation. The worm wheel 2 is stably connected to the output shaft 10, allowing its rotation to drive the output shaft 10. After prolonged use, the drain bolt 6 may loosen, creating a gap between it and the housing 9, which could lead to oil leakage. After the drain bolt 6 is installed on the housing 9, air is injected into the air sealing gasket 15 through the one-way air valve 16. This causes the air sealing gasket 15 to expand and seal the gap between the drain bolt 6 and the housing 9, preventing lubricating oil leakage.

Claims

1. A miniature worm gear reducer, comprising a housing (9) and a bottom cover (7), characterized in that: The box body (9) is provided with a bottom cover (7) on the lower side. A drain bolt (6) is installed on one side of the bottom cover (7). An inflation sealing gasket (15) is provided on the inner side of one end of the drain bolt (6). A one-way inflation valve (16) is provided on the end of the drain bolt (6) away from the inflation sealing gasket (15). A support shaft (8) is provided on the inner side of the box body (9). A wheel bearing (11) is sleeved on the outer side of the support shaft (8). An output shaft (10) is provided on the outer side of the wheel bearing (11). A worm gear (2) is keyed to the outer side of the output shaft (10). A worm (4) is provided on the lower side of the worm gear (2).

2. The miniature worm gear reducer according to claim 1, characterized in that: Both ends of the worm (4) are fitted with rod bearings (5), and one end of the worm (4) is provided with an input shaft (1). An oil seal (14) is provided on the input shaft (1) near the rod bearing (5).

3. The miniature worm gear reducer according to claim 2, characterized in that: The box (9) is provided with a top cover (12) on the upper side, and an exhaust cover (3) is installed on the top cover (12).

4. The miniature worm gear reducer according to claim 1, characterized in that: The inner side of the housing (9) is provided with a wheel groove (13) corresponding to the position of the worm gear (2), and the housing (9) is filled with lubricating oil.

5. The miniature worm gear reducer according to claim 3, characterized in that: The top cover (12) is connected to the box body (9) by bolts, and a sealing ring is provided between the contact surfaces of the top cover (12) and the box body (9).

6. The miniature worm gear reducer according to claim 1, characterized in that: A sealing ring is provided between the contact surface of the bottom cover (7) and the box body (9).

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