Oil-seepage-proof metal gear box structure

Abstract

The utility model belongs to the technical field of gear boxes, and particularly relates to an anti-oil-leakage metal gear box structure which comprises a shell and further comprises ball bearings fixedly installed at the two ends in the shell, a rubber sealing ring is fixedly installed between the ball bearings, the ball bearings are installed through the shell, and the rubber sealing ring is fixedly installed between the ball bearings. A rubber sealing ring is connected between ball bearings, a first O-shaped sealing ring is mounted through a transmission body, a metal output shaft is in close fit with the rubber sealing ring, and the tail end of the sealing ring is in interference fit with a metal inner gear ring, so that the output end of the gear box achieves a sealing effect, and grease is prevented from seeping from the interior of the gear box; and then the output assembly of the oil seepage prevention structure in the gearbox is in interference fit with the first O-shaped sealing ring, the first O-shaped sealing ring is extruded through the ball bearing and the output assembly, the sealing effect is achieved in the gearbox, grease seepage is prevented, and therefore transmission smoothness is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of gearbox technology, and in particular relates to a metal gearbox structure that prevents oil leakage. Background Technology

[0002] Metal gearboxes are a common type of transmission device, mainly composed of gears, bearings, and housings. They are primarily used to transmit power and change speed and torque. When metal gearboxes are in operation, lubricating oil is applied to the transmission parts. Leakage of this lubricating oil can easily affect the smoothness of the transmission, thereby reducing the smoothness of the gearbox's power transmission. Therefore, an oil-proof metal gearbox structure is proposed.

[0003] For example, Chinese patent CN221054269U discloses an oil-proof gearbox, including a housing, a gear set installed inside the housing, a housing cover installed on the housing, a joint sealing mechanism at the connection between the housing and the housing cover, a plurality of hollow end caps and sealing end caps installed on the housing and the housing cover, a plurality of rotating shafts of the gear set being rotatably connected to the hollow end caps and sealing end caps, and an on-shaft sealing mechanism at the connection between the rotating shafts and the hollow end caps, with an oil collection device connected to the on-shaft sealing mechanism.

[0004] The existing technical documents have the following problems:

[0005] Existing technical documents have some drawbacks in use, such as: when a metal gearbox is in operation, lubricating oil is applied to the transmission parts, and leakage of this lubricating oil can easily affect the smoothness of the transmission, thereby reducing the smoothness of the gearbox's power transmission. Furthermore, the internal gear ring is directly exposed to the air, making it susceptible to dust corrosion, affecting the sealing of the connection and reducing the service life of the gearbox. Therefore, we propose an oil-leakage-proof metal gearbox structure. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned technical problems by providing an oil-proof metal gearbox structure that prevents oil leakage at the transmission point and improves the sealing performance of the internal gear ring.

[0007] In view of this, the present invention provides an oil-proof metal gearbox structure, including a housing, and further comprising: ball bearings fixedly installed at both ends inside the housing, a rubber sealing ring fixedly installed between the ball bearings, a first O-ring fixedly installed on one side of the ball bearings, a transmission body fixedly installed on one side of the first O-ring, a metal output shaft passing through the other side of the housing, a metal internal gear ring sleeved on one side of the housing, plastic flanges fixedly installed at both ends inside the metal internal gear ring, a second O-ring sleeved on the surface of the plastic flange, self-tapping screws passing through both ends of the metal internal gear ring, and a power body fixedly installed on one side of the metal internal gear ring.

[0008] Based on the above structure, the first O-ring is squeezed by the ball bearing and the output component to achieve an internal sealing effect, preventing grease leakage and ensuring smooth transmission. The second O-ring is interference-fitted with the metal internal gear ring to achieve a sealing effect, thereby avoiding direct contact between the connection and the external part and improving the service life of the metal internal gear ring.

[0009] Preferably, a transmission gear is fixedly installed between the two ends inside the transmission body. The transmission gear is made of stainless steel and is used to facilitate the transmission of power to the transmission body.

[0010] Preferably, a connecting groove is fixedly provided between the plastic flanges, and the plastic flanges are made of plastic material. The connecting groove facilitates connection with the power body.

[0011] Preferably, the two ends of the metal output shaft are fixedly provided with limiting grooves, and the other side of the metal output shaft is fixedly provided with a snap-fit ​​groove, which facilitates the stable connection between the metal output shaft and the external device.

[0012] Preferably, the inner wall of the snap-fit ​​groove is fixedly provided with a threaded groove, which is made of alloy material, and the threaded groove facilitates the connection and disassembly of external devices.

[0013] Preferably, a protective shell is fixedly installed on the surface of the power body to protect the power body.

[0014] The beneficial effects of this utility model are:

[0015] 1. This oil-proof metal gearbox structure uses a housing to install ball bearings, then connects rubber seals between the ball bearings, and finally installs a first O-ring seal through the transmission body. By tightly fitting the metal output shaft to the rubber seal and interfering with the end of the seal to the metal internal gear ring, the gearbox output end achieves a sealing effect, preventing grease from leaking out of the gearbox. Then, the oil-proof output component inside the gearbox is interfering with the first O-ring seal, and the ball bearings and output component press against the first O-ring seal to achieve an internal sealing effect, preventing grease leakage and ensuring smooth transmission.

[0016] 2. This oil-proof metal gearbox structure uses a metal internal gear ring to install a plastic flange, followed by the installation of self-tapping screws and a second O-ring seal via the plastic flange. During assembly, the plastic flange is fitted onto the second O-ring seal to engage with the metal internal gear ring, and then the plastic flange and metal internal gear ring are secured with self-tapping screws. The second O-ring seal and the metal internal gear ring have an interference fit, achieving a sealing effect, thereby preventing direct contact between the connection and the external component and improving the service life of the metal internal gear ring. Attached Figure Description

[0017] Figure 1 This is a perspective view of the entire utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a partial structural diagram of the shell in this utility model;

[0020] Figure 4 This is a partial structural diagram of the metal internal gear ring in this utility model;

[0021] Figure 5 This is a partial perspective view of the metal output shaft in this utility model.

[0022] The markings in the diagram are as follows:

[0023] 1. Metal output shaft; 101. Limiting groove; 102. Snap-fit ​​groove; 103. Threaded groove; 2. Housing; 201. Ball bearing; 202. Rubber sealing ring; 203. First O-ring seal; 204. Transmission body; 205. Transmission gear; 3. Metal internal gear ring; 301. Plastic flange; 302. Second O-ring seal; 303. Self-tapping screw; 304. Connecting groove; 4. Power body; 401. Protective shell. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This application discloses an oil-proof metal gearbox structure. Please refer to [link / reference]. Figures 1-5 The device includes a housing 2, and further includes: ball bearings 201 fixedly installed at both ends inside the housing 2, rubber sealing rings 202 fixedly installed between the ball bearings 201, a first O-ring 203 fixedly installed on one side of the ball bearings 201, a transmission body 204 fixedly installed on one side of the first O-ring 203, a metal output shaft 1 through the other side of the housing 2, a metal internal gear ring 3 sleeved on one side of the housing 2, plastic flanges 301 fixedly installed at both ends inside the metal internal gear ring 3, a second O-ring 302 sleeved on the surface of the plastic flange 301, self-tapping screws 303 through the two ends of the metal internal gear ring 3, and a power body 4 fixedly installed on one side of the metal internal gear ring 3.

[0026] Based on the above structure, the ball bearings 201 are installed through the housing 2, and then the rubber seals 202 are connected between the ball bearings 201. Next, the first O-ring seal 203 is installed through the transmission body 204. By tightly fitting the metal output shaft 1 to the rubber seal 202, and by interference-fitting the end of the seal ring to the metal internal gear ring 3, the gearbox output end achieves a sealing effect, preventing grease from leaking out of the gearbox. Then, the gearbox's internal oil-proof structure output assembly is interference-fitted with the first O-ring seal 203. The ball bearings 201 and the output assembly compress the first O-ring seal 203, thus... The internal seal prevents grease leakage, ensuring smooth transmission. The plastic flange 301 is installed via the metal internal gear ring 3, and then the self-tapping screw 303 and the second O-ring seal 302 are installed via the plastic flange 301. During assembly, the plastic flange 301 is fitted onto the second O-ring seal 302 and the metal internal gear ring 3, and then the plastic flange 301 and the metal internal gear ring 3 are secured with the self-tapping screw 303. The interference fit between the second O-ring seal 302 and the metal internal gear ring 3 achieves a sealing effect, thus preventing direct contact between the connection and the external parts and extending the service life of the metal internal gear ring 3.

[0027] In one embodiment, a transmission gear 205 is fixedly installed between the two ends inside the transmission body 204, and the transmission gear 205 is made of stainless steel.

[0028] Specifically, the transmission gear 205 is connected through the transmission body 204.

[0029] In this embodiment, the transmission gear 205 is used to facilitate the transmission of power.

[0030] In one embodiment, a connecting groove 304 is fixedly provided between the plastic flanges 301, and the plastic flanges 301 are made of plastic.

[0031] Specifically, the connecting groove 304 is set between the plastic flanges 301.

[0032] In this embodiment, the connecting groove 304 is used to connect the power body 4.

[0033] In one embodiment, limiting grooves 101 are fixedly provided at both ends of the metal output shaft 1, and a snap-fit ​​groove 102 is fixedly provided on the other side of the metal output shaft 1.

[0034] Specifically, the limiting groove 101 and the snap-fit ​​groove 102 are set by the metal output shaft 1.

[0035] In this embodiment, the use of the limiting groove 101 and the snap-fit ​​groove 102 facilitates the connection of external devices.

[0036] In one embodiment, the inner wall of the snap-fit ​​groove 102 is fixedly provided with a threaded groove 103, which is made of alloy material.

[0037] Specifically, the threaded groove 103 is set by the snap-fit ​​groove 102.

[0038] In this embodiment, the threaded groove 103 facilitates the connection and disassembly of external devices.

[0039] In one embodiment, a protective shell 401 is fixedly mounted on the surface of the power body 4.

[0040] Specifically, the protective shell 401 is installed via the power unit 4.

[0041] In this embodiment, the protective shell 401 is used to protect the surface of the power body 4.

[0042] In this embodiment, an oil-proof metal gearbox structure is used such that, a limiting groove 101 and a snap-fit ​​groove 102 are provided through a metal output shaft 1, and a threaded groove 103 is provided through the snap-fit ​​groove 102. A ball bearing 201 is installed through a housing 2, and a rubber sealing ring 202 is connected between the ball bearings 201. A first O-ring seal 203 is then installed through a transmission body 204, which connects to a transmission gear 205. By tightly fitting the metal output shaft 1 and the rubber sealing ring 202, and by interference-fitting the end of the sealing ring with the metal internal gear ring 3, the gearbox output end is sealed. Then, the oil-proof structure output assembly inside the gearbox connects with the first O-ring seal 205. An O-ring 203 is press-fitted with the output assembly via a ball bearing 201 to achieve internal sealing. A metal internal gear ring 3 is used to install a plastic flange 301. Then, a self-tapping screw 303 is used to install a second O-ring 302 onto the plastic flange 301. During assembly, the plastic flange 301 is fitted onto the second O-ring 302 and the metal internal gear ring 3, and then the plastic flange 301 and the metal internal gear ring 3 are fixed with self-tapping screws 303. The second O-ring 302 and the metal internal gear ring 3 are press-fitted. A connecting groove 304 is then created between the plastic flanges 301. Finally, the protective shell 401 is installed via the power unit 4.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oil-proof metal gearbox structure, comprising a housing (2), characterized in that, Also includes: Ball bearings (201) are fixedly installed at both ends inside the housing (2). Rubber sealing rings (202) are fixedly installed between the ball bearings (201). A first O-ring (203) is fixedly installed on one side of the ball bearings (201). A transmission body (204) is fixedly installed on one side of the first O-ring (203). A metal output shaft (1) is installed through the other side of the housing (2). A metal internal gear ring (3) is sleeved on one side of the housing (2). Plastic flanges (301) are fixedly installed at both ends inside the metal internal gear ring (3). A second O-ring (302) is sleeved on the surface of the plastic flange (301). Self-tapping screws (303) are installed through the two ends of the metal internal gear ring (3). A power body (4) is fixedly installed on one side of the metal internal gear ring (3).

2. The oil-proof metal gearbox structure according to claim 1, characterized in that: A transmission gear (205) is fixedly installed between the two ends inside the transmission body (204), and the transmission gear (205) is made of stainless steel.

3. The oil-proof metal gearbox structure according to claim 1, characterized in that: A connecting groove (304) is fixedly provided between the plastic flanges (301), and the plastic flanges (301) are made of plastic.

4. The oil-proof metal gearbox structure according to claim 1, characterized in that: Limiting grooves (101) are fixedly provided at both ends of the metal output shaft (1), and a snap-fit ​​groove (102) is fixedly provided on the other side of the metal output shaft (1).

5. The oil-proof metal gearbox structure according to claim 4, characterized in that: The inner wall of the snap-fit ​​groove (102) is fixedly provided with a threaded groove (103), which is made of alloy material.

6. The oil-proof metal gearbox structure according to claim 1, characterized in that: A protective shell (401) is fixedly installed on the surface of the power body (4).

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