A waterproof and dustproof shell for high sealing and adapting to the inner core of an encoder

Abstract

The utility model relates to the technical field of the shell of encoder inner core, concretely to a waterproof and dustproof shell of high sealing property adaptation encoder inner core, including the casing, the casing is installed with the end cover, the junction of casing and end cover is installed with the sealed O type ring, the inside of casing is equipped with two groups of oil collecting groove, the one side of casing is equipped with the ventilation area, the inside sliding connection of ventilation area has two groups of the ball, the utility model's purpose is: through solid butter in the semi-solid butter filling area of encoder inner core and shell forms the sealing effect reaches the effect of dustproof waterproof, on one hand prevents the connection of encoder inner core and shell not to have the seal, leads to the pollutant in the external environment to invade inside, and then causes the performance of encoder inner core to decline, shortens the life, even the equipment failure problem, on the other hand, the oil collecting groove can be lubricated to the inner core bottom bearing through smearing butter, and improve the anticorrosive ability of bearing.

Description

Technical Field

[0001] This utility model relates to the technical field of housings for encoder cores, specifically a waterproof and dustproof housing with high sealing performance adapted to encoder cores. Background Technology

[0002] The encoder core is the core functional module of the encoder, which directly generates and converts position / speed signals. It includes the encoder disk, read head, and signal processing circuit. Its performance determines the encoder's resolution and response speed. The encoder housing is a mechanical structure that protects the core, provides an installation interface and isolates it from the environment. The materials are divided into metal and plastic, and the structural types include shaft type, flange type and blind hole type. Its core function is to ensure the stable operation of the core in environments with high vibration resistance and high temperature resistance.

[0003] Existing encoder housings sometimes fail to seal properly during use, allowing dust and moisture to enter and damage the encoder core or cause it to become contaminated and damp, thus affecting the encoder's lifespan and accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a highly sealed waterproof and dustproof housing for an encoder core. Solid grease forms a seal between the encoder core and the housing in a semi-solid grease-filled area, achieving a dustproof and waterproof effect. This prevents external contaminants from entering the housing due to a lack of seal at the connection point, which could lead to performance degradation, shortened lifespan, or even equipment failure. Furthermore, the grease sealant in the oil collection groove lubricates the bearing at the bottom of the core and improves its corrosion resistance, thus addressing the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waterproof and dustproof housing for a high-sealing encoder core, comprising a housing, an end cap mounted on the housing, a sealing O-ring installed at the connection between the housing and the end cap, two sets of oil collection grooves inside the housing, a venting strip on one side of the housing, and two sets of plugging balls slidably connected inside the venting strip.

[0006] Preferably, one side of each of the two sets of oil collection troughs is connected to a feed pipe, and the two sets of oil collection troughs are connected to the inner core insertion point inside the shell.

[0007] Preferably, a ventilation pipe is connected to one side of the ventilation strip, one end of the ventilation pipe is connected to the encoder housing heat sink, and an air outlet pipe is connected to one side of the ventilation strip.

[0008] Preferably, two sets of springs are fixedly connected inside the ventilation belt, and a stop ball is fixedly connected to one end of each set of springs.

[0009] Preferably, the two sets of ball plugs are slidably connected at the connection between the oil collection trough and the shell.

[0010] Preferably, the sealing O-ring is sized to match the end cap.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Some semi-solid grease will pass through the oil collection groove to form a seal in the semi-solid grease filling area between the encoder core and the outer shell, achieving a dustproof and waterproof effect. On the one hand, it prevents the connection between the encoder core and the outer shell from being unsealed, allowing pollutants from the external environment to enter the interior, which could lead to a decrease in the performance of the encoder core, a shortened lifespan, or even equipment failure. On the other hand, by applying grease to the oil collection groove, it can lubricate the bearing at the bottom of the core and improve the bearing's corrosion resistance.

[0013] 2. When the ball blockage obstructs the connection between the oil collection groove and the inner core insertion point inside the housing, it blocks the oil collection groove, preventing the encoder inner core from rotating synchronously with the motor during operation and transmitting heat. This heat transfers to the inside of the oil collection groove, causing the semi-solid grease inside to melt. The semi-solid grease inside the oil collection groove cannot replenish the semi-solid grease at the connection between the encoder inner core and the housing in time, resulting in abnormal sealing at the connection between the encoder inner core and the housing and affecting its normal operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a waterproof and dustproof outer shell for a highly sealed encoder core according to this utility model.

[0015] Figure 2 This is a cross-sectional view of a waterproof and dustproof housing for a highly sealed encoder core according to this utility model.

[0016] Figure 3 This is a cross-sectional view of the ventilation strip of a waterproof and dustproof housing adapted to the encoder core of this utility model with high sealing performance.

[0017] Figure 4 This utility model provides a highly sealed waterproof and dustproof housing adapted to the encoder core. Figure 3 Enlarged view of the structure at point A in the middle.

[0018] In the diagram: 1. Shell; 2. End cap; 3. Sealing O-ring; 4. Oil collection groove; 5. Feed pipe; 6. Ventilation belt; 7. Spring; 8. Blocking ball; 9. Ventilation pipe; 10. Air outlet pipe. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1 to 4 This utility model provides a waterproof and dustproof housing with high sealing performance that is compatible with encoder cores. It includes a housing 1, an end cap 2 installed on the housing 1, a sealing O-ring 3 installed at the connection between the housing 1 and the end cap 2, two sets of oil collection grooves 4 inside the housing 1, and a ventilation strip 6 on one side of the housing 1. Two sets of plugs 8 are slidably connected inside the ventilation strip 6.

[0021] The construction workers installed the encoder core inside the housing, then fitted the end cover 2 with a sealing O-ring 3 of appropriate size, and then fixed the end cover 2 to the housing 1 with a non-detachable screw. By fitting the sealing O-ring 3 of appropriate size, a suitable sealing effect is achieved, thereby realizing dustproof and waterproof.

[0022] Construction workers transfer semi-solid grease through two sets of feed pipes 5, distributing the semi-solid grease inside the two sets of oil collection grooves 4. Some of the semi-solid grease will pass through the oil collection grooves 4, forming a sealing effect in the semi-solid grease filling area between the encoder core and the outer shell, achieving a dustproof and waterproof effect. On the one hand, this prevents the connection between the encoder core and the outer shell from being unsealed, allowing pollutants from the external environment to enter the interior, which could lead to a decrease in the performance of the encoder core, a shortened lifespan, or even equipment failure. On the other hand, by applying grease, the oil collection grooves 4 can lubricate the bearing at the bottom of the core and improve the bearing's corrosion resistance.

[0023] When the encoder starts working, the encoder housing heat sink operates, transmitting gas to cool the encoder. Part of the transmitted gas is transmitted through the ventilation pipe 9 to the ventilation belt 6, and then discharged through the exhaust pipe 10 on one side of the ventilation belt 6, allowing the gas to circulate in the ventilation belt 6. On the one hand, this cools the inner core of the encoder. On the other hand, as the gas circulates in the ventilation belt 6, it pushes two sets of blocking balls 8. At this time, the air pressure is greater than the elastic force of the spring 7 below the blocking ball 8. The spring 7 elastically deforms and stretches, thereby blocking the connection between the oil collection groove 4 and the inner core insertion point inside the housing 1. This blocks the oil collection groove 4, preventing the inner core of the encoder from rotating synchronously with the motor during operation and transmitting heat. The heat is transferred to the inside of the oil collection groove 4, causing the semi-solid grease inside the oil collection groove 4 to melt. The semi-solid grease inside the oil collection groove 4 cannot replenish the semi-solid grease at the connection between the inner core of the encoder and the housing in time, resulting in abnormal sealing at the connection between the inner core of the encoder and the housing, affecting its normal operation.

[0024] After the work is completed, the heat sink of the encoder housing 1 stops working, and the ventilation pipe 9 no longer transmits gas to the ventilation belt 6. At this time, the spring 7 is greater than the air pressure, and the spring 7 drives the plug ball 8 to return to the ventilation belt 6. The oil collection groove 4 is opened to connect with the inner core insertion point inside the housing 1. The construction personnel can replenish the semi-solid grease consumed during the work when the oil collection groove 4 is connected to the inner core insertion point inside the housing 1 through the oil collection groove 4 to ensure the stability of the next work.

[0025] In an optional embodiment, each of the two sets of oil collection tanks 4 is connected to an inlet pipe 5 on one side, and the two sets of oil collection tanks 4 are connected to the inner core insertion point inside the housing 1.

[0026] It should be noted that the construction personnel deliver semi-solid grease to two sets of oil collection tanks 4 through two sets of feed pipes 5, so that it is evenly distributed. After some of the grease flows through the oil collection tank 4, it forms a sealing layer in the filling area between the encoder core and the outer shell, thus achieving the function of dustproof and waterproof.

[0027] In an optional embodiment, a ventilation duct 9 is connected to one side of the ventilation strip 6, one end of the ventilation duct 9 is connected to the encoder housing heat sink, and an air outlet duct 10 is connected to one side of the ventilation strip 6.

[0028] It should be noted that when the encoder housing heat sink is working, heat is dissipated through gas conduction. Some of the gas is introduced into the ventilation belt 6 through the ventilation pipe 9, and after circulating along the ventilation belt 6, it is discharged from the exhaust pipe 10 on one side, forming a surrounding gas flow path.

[0029] In an optional embodiment, two sets of springs 7 are fixedly connected inside the ventilation belt 6, and a ball stopper 8 is fixedly connected to one end of each set of springs 7.

[0030] It should be noted that after the work is completed, the encoder housing heat sink stops rotating, and the ventilation pipe 9 stops supplying air to the ventilation strip 6. At this time, the spring force of spring 7 is greater than the internal air pressure, pushing the stop ball 8 back into the ventilation strip 6, so that the oil collection groove 4 is connected to the inner core insertion point of the housing 1. The construction personnel can replenish the semi-solid grease consumed during the work in this part through the oil collection groove 4 to ensure stable operation in the next operation.

[0031] In an optional embodiment, two sets of ball bearings 8 are slidably connected at the point where the oil collection trough 4 communicates with the housing 1.

[0032] It should be noted that when the encoder is working, gas enters the ventilation belt 6 through the ventilation pipe 9. The air pressure causes the plug ball 8 to overcome the elastic force of the spring 7 and block the oil collection groove 4 and the inner core insertion point. This prevents the grease in the oil collection groove 4 from melting due to the heat of the inner core and failing to be replenished in time, which would lead to seal failure. After the encoder stops, the air pressure disappears, the spring 7 resets and drives the plug ball 8 to open the connection, making it easy for construction personnel to replenish grease to maintain the sealing effect.

[0033] In an optional embodiment, the sealing O-ring 3 is sized to fit the end cap 2.

[0034] It should be noted that the end cap 2 is fitted with a sealing O-ring 3 of appropriate size, and then the end cap 2 is fixed to the housing 1 with a non-detachable screw.

[0035] Working principle: The construction personnel install the encoder core inside the housing, then put a sealing O-ring 3 of appropriate size on the end cover 2, and then fix the end cover 2 to the housing 1 with a non-detachable screw;

[0036] Construction workers transmit semi-solid grease through two sets of feed pipes 5, so that the semi-solid grease is distributed inside the two sets of oil collection grooves 4. Some of the semi-solid grease will pass through the oil collection grooves 4 and form a seal in the semi-solid grease filling area between the encoder core and the outer shell.

[0037] When the encoder starts working, the encoder housing heat sink works, and the heat sink transmits gas to cool the encoder. Part of the transmitted gas is transmitted to the ventilation belt 6 through the ventilation pipe 9, and then discharged through the air outlet pipe 10 on one side of the ventilation belt 6, so that the gas circulates in the ventilation belt 6, which cools the inner core of the encoder.

[0038] When the gas flows through the ventilation belt 6, the gas will push the two sets of blocking balls 8. At this time, the gas pressure is greater than the elastic force of the spring 7 below the blocking ball 8. The spring 7 elastically deforms and stretches, thereby blocking the oil collection groove 4 and the inner core insertion point inside the housing 1, thus blocking the oil collection groove 4.

[0039] After the work is completed, the encoder housing heat sink stops working, and the ventilation pipe 9 no longer transmits gas to the ventilation belt 6. At this time, the spring 7 is greater than the air pressure, and the spring 7 drives the blocking ball 8 to return to the ventilation belt 6, opening the connection between the oil collection groove 4 and the inner core insertion point inside the housing 1. The construction personnel can replenish the semi-solid grease consumed during the work when the oil collection groove 4 is connected to the inner core insertion point inside the housing 1 through the oil collection groove 4.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof and dustproof housing for a highly sealed encoder core, comprising a housing (1), characterized in that, An end cap (2) is installed on the housing (1). A sealing O-ring (3) is installed at the connection between the housing (1) and the end cap (2). Two sets of oil collection grooves (4) are provided inside the housing (1). The two sets of oil collection grooves (4) are rectangular. A ventilation band (6) is provided on one side of the housing (1). Two sets of plugs (8) are slidably connected inside the ventilation band (6).

2. The waterproof and dustproof housing for a high-sealing encoder core according to claim 1, characterized in that, Both sets of oil collection tanks (4) are connected to a feed pipe (5) on one side, and both sets of oil collection tanks (4) are connected to the inner core insertion point inside the shell (1).

3. The waterproof and dustproof housing for a high-sealing encoder core according to claim 1, characterized in that, The ventilation strip (6) is connected to a ventilation pipe (9) on one side, and one end of the ventilation pipe (9) is connected to the heat sink of the encoder housing. The ventilation strip (6) is connected to an air outlet pipe (10) on one side.

4. The waterproof and dustproof housing for a high-sealing encoder core according to claim 1, characterized in that, The ventilation belt (6) is internally connected to two sets of springs (7), and each set of springs (7) is fixedly connected to a ball stopper (8) at one end.

5. The waterproof and dustproof housing for a high-sealing encoder core according to claim 1, characterized in that, The two sets of plugs (8) are slidably connected at the connection between the oil collection tank (4) and the shell (1).

6. The waterproof and dustproof housing for a high-sealing encoder core according to claim 1, characterized in that, The sealing O-ring (3) is sized to match the end cap (2).

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