Steering engine with waterproof shell and electronic equipment

Abstract

The embodiment of the utility model relates to the technical field of steering engines, and particularly discloses a steering engine with a waterproof shell and electronic equipment, the steering engine comprises a shell, a driving mechanism, an angle detection mechanism and a circuit board, the shell comprises an upper shell and a lower shell, the upper shell is provided with a first groove and a through hole for communicating the first groove with the outside, and the lower shell is provided with a second groove; the upper shell is provided with a convex ring at the end part of the notch of the first groove, the lower shell is provided with a second groove, the lower shell is provided with an annular groove at the end part of the notch of the second groove, the convex ring is inserted into the annular groove, and the first groove and the second groove are communicated to form an accommodating cavity; the driving mechanism, the angle detection mechanism and the circuit board are all arranged in the accommodating cavity, and an output shaft of the driving mechanism extends out of the shell from the through hole; the angle detection mechanism is used for detecting the rotation angle of the output shaft; the circuit board is connected with the angle detection mechanism and the driving mechanism. According to the embodiment of the utility model, the connection sealing performance and the connection strength of the upper shell and the lower shell can be enhanced by utilizing the insertion matching between the convex ring of the upper shell and the annular groove of the lower shell.

Description

Technical Field

[0001] The embodiments of the utility model relate to the technical field of steering gears, and in particular to a steering gear and an electronic device with a waterproof housing. Background Art

[0002] As a position (angle) servo drive, a servo is suitable for control systems that require continuous and maintained angle changes. It consists of a housing, motor, reduction gear set, sensor, and control circuitry, forming an automatic control device. Its operating principle is that the control circuit receives sensor signals and, after applying complex algorithms to them, controls the motor's speed and direction, achieving the desired angle. Servos are used in a variety of applications, including marine, aerospace, drones, industrial automation, and electronic toys. They are key components for achieving flexible movement and precise control of equipment.

[0003] In the process of realizing the present invention, the inventors found that: at present, in order to facilitate installation and maintenance, the casing of the servo is split into an upper casing and a lower casing, and the upper casing and the lower casing are detachable and fixed. However, when the upper casing and the lower casing are detachable, a gap will be formed at the joint between the upper casing and the lower casing. External liquid can enter the casing through the gap and damage the internal components of the servo, thereby greatly reducing the service life of the servo. Utility Model Content

[0004] The main technical problem solved by the embodiments of the utility model is to provide a steering gear and an electronic device with a waterproof shell, which can effectively prevent external water from entering the interior of the steering gear through the connection gap between the upper shell and the lower shell.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a steering gear with a waterproof shell, comprising: a shell, a driving mechanism, an angle detection mechanism and a circuit board; the shell comprises an upper shell and a lower shell, the upper shell is provided with a first groove and a through hole, the through hole connects the first groove with the outside, the upper shell is provided with a convex ring at the end of the notch of the first groove, the convex ring surrounds the notch of the first groove, the lower shell is provided with a second groove, the lower shell is provided with an annular groove at the end of the notch of the second groove, the annular groove surrounds the notch of the second groove, the convex ring is inserted into the annular groove, the first groove and the second groove are connected to form an accommodating cavity; the driving mechanism is provided in the accommodating cavity, and the output shaft of the driving mechanism extends from the through hole to the outside of the shell; the angle detection mechanism is provided in the accommodating cavity, and the angle detection mechanism is used to detect the rotation angle of the output shaft; the circuit board is provided in the accommodating cavity, and the circuit board is connected to the angle detection mechanism and the driving mechanism.

[0006] Optionally, the shell further includes a first gasket, which is disposed in the annular groove, and the convex ring abuts against the first gasket after being inserted into the annular groove.

[0007] Optionally, a first step is formed between the convex ring and the end of the upper shell; the shell also includes a second gasket, the second gasket is sleeved on the convex ring, and the second gasket is supported on the first step, and the end of one side wall of the second groove is located on the first step and abuts the second gasket.

[0008] Optionally, a second step is formed between the convex ring and the end of the lower shell, and the second step is closer to the second groove than the first step; the shell also includes a third gasket, which is supported on the second step, and the end of the other side wall of the second groove is located on the second step and abuts the third gasket.

[0009] Optionally, there are multiple convex rings and annular grooves, and the multiple convex rings are spaced apart and arranged, and one convex ring is inserted into one annular groove.

[0010] Optionally, the lower shell is further provided with a wire hole; the servo also includes a wire and a sealing ring, the sealing ring is provided in the wire hole, one end of the wire is connected to the circuit board, and the other end of the wire passes through the sealing ring and extends out of the shell.

[0011] Optionally, the lower shell is provided with a limiting groove on the inner wall of the wire hole, the outer ring of the sealing ring is provided with a limiting platform, the limiting platform is plugged into the limiting groove, and the inner ring of the sealing ring is sleeved on the wire.

[0012] Optionally, along a direction perpendicular to the output shaft, the cross-sectional area of ​​the mounting plate is larger than the cross-sectional area of ​​the annular cover, and the mounting plate covers the annular cover.

[0013] Optionally, a screw hole is provided at the end of the output shaft extending out of the accommodating cavity, the mounting plate includes a plate body and a screw connection piece, the plate body is provided with a mounting hole, and the screw connection piece passes through the mounting hole and is screwed to the screw hole.

[0014] Optionally, the shell includes an upper shell, a lower shell and a sealing gasket, the upper shell and the lower shell are detachably fixed, the upper shell and the lower shell jointly enclose the accommodating cavity, and the sealing gasket is arranged at the joint between the upper shell and the lower shell.

[0015] Optionally, the driving mechanism includes a bearing, the outer ring of the bearing abuts the side wall of the through hole, and the inner ring of the bearing is sleeved on the output shaft; the bearing also includes a first sealing ring and a second sealing ring, the first sealing ring is arranged on the end face of the bearing facing the outside world, and is located between the inner ring and the outer ring, and the second sealing ring is arranged on the end face of the bearing facing the accommodating cavity, and is located between the inner ring and the outer ring.

[0016] Optionally, the bearing includes a first spring hoop and a second spring hoop; the first sealing ring is provided with a first ring groove, and the first spring hoop is accommodated in the first ring groove in a compressed state; the second washer is provided with a second ring groove, and the second spring hoop is accommodated in the second ring groove in a compressed state.

[0017] In order to solve the above technical problems, another technical solution adopted by the present invention is to provide an electronic device including the above-mentioned steering gear.

[0018] The beneficial effects of the embodiment of the utility model are as follows: different from the prior art, the embodiment of the utility model provides a servo with a waterproof shell, including: a shell, a driving mechanism, an angle detection mechanism and a circuit board; wherein the shell includes an upper shell and a lower shell, the upper shell is provided with a first groove and a through hole, the through hole connects the first groove with the outside world, the upper shell is provided with a convex ring at the end of the notch of the first groove, the convex ring surrounds the notch of the first groove, the lower shell is provided with a second groove, the lower shell is provided with an annular groove at the end of the notch of the second groove, the annular groove surrounds the second groove The notch, the convex ring is plugged into the annular groove, and the first groove and the second groove are connected to form a receiving chamber; the driving mechanism is arranged in the receiving chamber, and the output shaft of the driving mechanism extends from the through hole outside the shell; the angle detection mechanism is arranged in the receiving chamber, and the angle detection mechanism is used to detect the rotation angle of the output shaft; the circuit board is arranged in the receiving chamber, and the circuit board is connected to the angle detection mechanism and the driving mechanism, and the circuit board is used to receive the rotation angle of the angle detection mechanism to control the driving mechanism to adjust the servo, so as to meet the current working needs. Through the above structure, the utility model can utilize the plug-in cooperation of the convex ring provided on the upper shell and the annular groove provided on the lower shell to achieve a sealed connection between the upper shell and the lower shell, extend the movement path of the external liquid into the servo shell body, thereby enhancing the waterproofness between the upper shell and the lower shell, protecting the internal components of the servo, and thus extending the service life of the servo. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying any creative work.

[0020] Figure 1 This is an exploded schematic diagram of a steering gear with a waterproof housing provided by an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the assembly of a steering gear with a waterproof housing provided by an embodiment of the present utility model;

[0022] Figure 3 This is a cross-sectional schematic diagram of a steering gear with a waterproof housing provided by an embodiment of the present utility model;

[0023] Figure 4 yes Figure 3 A partial enlarged view of part A in the middle;

[0024] Reference numerals:

[0025] 1000, servo;

[0026] 1. Housing; 11. Upper housing; 111. First groove; 112. Through hole; 113. Raised ring; 114. First step; 115. Second step; 12. Lower housing; 121. Second groove; 122. Annular groove; 123. Wire hole; 1231. Limiting groove; 13. First washer; 14. Second washer; 15. Third washer;

[0027] 2. Driving mechanism;

[0028] 3. Angle detection mechanism;

[0029] 4. Circuit board;

[0030] 5. Sealing ring; 51. Limiting platform;

[0031] 6. Wire;

[0032] 7. Bearings; DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this utility model belongs. The terms used in this specification and in the description of this utility model are only for the purpose of describing specific embodiments and are not intended to limit the utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the relevant listed items.

[0035] Due to their different structures and layouts of internal components, servos have formed a variety of servos that can achieve unique functions, such as servos with high heat dissipation, servos with waterproof casings, servos with ventilation ducts, etc. For the sake of convenience of description, the servos with waterproof casings will be referred to as servos in the following text of this application.

[0036] See also Figure 1 and Figure 2 The servo 1000 includes a housing 1, a drive mechanism 2, an angle detection mechanism 3 and a circuit board 4. The housing 1 is provided with a receiving cavity and an axial hole. The axial hole connects the receiving cavity with the outside world. The drive mechanism 2, the angle detection mechanism 3 and the circuit board 4 are all received in the receiving cavity. The output shaft portion of the drive mechanism 2 extends through the axial hole, and the drive mechanism 2 and the angle detection mechanism 3 are both electrically connected to the circuit board 4. The angle detection mechanism 3 is used to detect the rotation angle of the output shaft. The circuit board 4 is used to receive the data detected by the angle detection mechanism 3 and control the movement of the drive mechanism 2 according to the internal control algorithm to meet the current working needs.

[0037] In some embodiments, a first water retaining ring is extended from the outer surface of the shell 1. Specifically, the first water retaining ring extends in a direction parallel to the central axis of the axial hole. The first water retaining ring is arranged around the axial hole. The first water retaining ring is used to prevent external water from flowing into the axial hole in a direction perpendicular to the central axis of the axial hole; further, the first water retaining ring is extended with a water retaining eave in a direction perpendicular to the central axis of the axial hole. The water retaining eave is arranged around one end of the first water retaining ring away from the shell 1. The water retaining eave is used to hinder the flow of water that may be attached to the outer wall of the first water retaining ring, thereby increasing the resistance to water movement.

[0038] In some embodiments, the drive mechanism 2 includes a drive assembly and a ring cover, the output shaft of the drive assembly extends from the shaft hole to the receiving cavity, the ring cover includes a cover body and a second water retaining ring, the cover body is fixed to the side wall of the part of the output shaft extending from the receiving cavity, and the cover body is arranged around the output shaft, the second water retaining ring is fixed to the surface of the cover body facing the shell 1 to prevent external water from directly entering the interior of the servo 1000 along the axial direction of the output shaft through the gap between the side wall of the output shaft and the inner wall of the shaft hole, and the second water retaining ring is arranged around the output shaft to prevent external water from entering the gap between the side wall of the output shaft and the inner wall of the shaft hole along the radial direction of the output shaft, the first water retaining ring and the surface of the cover body facing the shell 1 are separated by a first gap, the second water retaining ring and the surface of the shell 1 facing the cover body are separated by a second gap, the first water retaining ring and the second water retaining ring are spaced apart along the axial direction perpendicular to the output shaft, and the projection of the first water retaining ring and the projection of the second water retaining ring at least partially overlap. Through the above structure, the first water retaining ring and the second water retaining ring are spaced apart and matched with the first gap and the second gap, and the projection of the first water retaining ring and the projection of the second water retaining ring at least partially overlap, which greatly increases the path that external water needs to pass through to enter the gap between the side wall of the output shaft and the inner wall of the shaft hole along the radial direction of the output shaft, thereby improving the waterproof ability of the servo 1000 and extending the service life of the servo 1000.

[0039] In other embodiments, see Figures 1 to 3The housing 1 includes an upper shell 11 and a lower shell 12. The upper shell 11 is provided with a first groove 111 and a through hole 112. The through hole 112 connects the first groove 111 with the outside, and the through hole 112 is used for the output shaft of the driving mechanism 2 to extend. The upper shell 11 is provided with a convex ring 113 at the end of the notch of the first groove 111. The convex ring 113 surrounds the notch of the first groove 111. The lower shell 12 is provided with a second groove 121. The lower shell 12 is provided with an annular groove 122 at the end of the notch of the second groove 121. The annular groove 122 surrounds the notch of the second groove 121. The convex ring 113 is inserted into the ring shaped groove 122, the first groove 111 and the second groove 121 are connected to form an accommodating cavity; the driving mechanism 2 is arranged in the accommodating cavity, and the output shaft of the driving mechanism 2 extends from the through hole 112 to the outside of the shell 1; the angle detection mechanism 3 is arranged in the accommodating cavity, and the angle detection mechanism 3 is used to detect the rotation angle of the output shaft; the circuit board 4 is arranged in the accommodating cavity, the circuit board 4 is connected to the angle detection mechanism 3 and the driving mechanism 2, and the circuit board 4 is used to receive the data detected by the angle detection mechanism 3, and control the movement of the driving mechanism 2 according to the internal control algorithm, so as to meet the current working needs. Through the above-described structure, the engagement of the protruding ring 113 with the annular groove 122 extends the path for external liquid to enter the interior of the housing 1 through the gap between the upper shell 11 and the lower shell 12, thereby achieving a sealed connection between the removable upper shell 11 and the lower shell 12. This extends the path required for external liquid to enter the interior of the housing 1 through the gap, thereby improving the waterproofness of the removable upper shell 11 and the lower shell 12, reducing the probability of external liquid entering the interior of the steering gear 1000 and damaging its components, and extending the service life of the steering gear 1000. Furthermore, compared to the prior art connection structure that directly contacts the end faces of the upper shell 11 and the lower shell 12 via screws, the mating structure between the protruding ring 113 and the annular groove 122 effectively enhances the overall structural strength of the housing 1 and improves its ability to withstand external impact forces.

[0040] It is understandable that the shapes of the protruding ring 113 and the annular groove 122 should be adapted so that when the protruding ring 113 is inserted into the annular groove 122, the sealing member can abut against the annular groove 122, so that an effective sealing connection is formed between the protruding ring 113 and the annular groove 122, thereby reducing the possibility of external liquid entering the interior of the servo 1000; alternatively, in some embodiments, the protruding ring 113 and the annular groove 122 are interference fit to ensure a sealed connection between the protruding ring 113 and the annular groove 122.

[0041] It should be noted that the overall shape of the convex ring 113 and the annular groove 122 includes but is not limited to: circle, rectangle, ellipse, or any irregular shape. It is only necessary to ensure that the overall shape of the convex ring 113 matches the end face of the notch of the first groove 111 of the upper shell 11, and the end face of the notch of the annular groove 122 and the second groove 121 of the lower shell 12.

[0042] In some embodiments, see Figure 3 and Figure 4 The shell 1 also includes a first gasket 13, which is arranged in the annular groove 122. After the convex ring 113 is inserted into the annular groove 122, it abuts against the first gasket 13. The material of the sealing ring 5 should be elastic, so that after the convex ring 113 is inserted into the annular groove 122, the first gasket 13 can achieve a certain degree of elastic deformation to fill the small gap between the convex ring 113 and the annular groove 122, thereby improving the sealing performance of the connection between the upper shell 11 and the lower shell 12.

[0043] It can be understood that the area enclosed by the inner circle of the first gasket 13 in its natural state should be smaller than the enclosed area of ​​the annular groove 122, so that when the first gasket 13 is installed in the annular groove 122, it needs to rely on the first gasket 13's own elasticity to wrap around the inner wall of the annular groove 122 close to the second groove 121, thereby improving the sealing performance of the first gasket 13 and reducing the possibility of external liquid entering the second groove 121 after passing through the first gasket 13.

[0044] Furthermore, a first step 114 is formed between the protruding ring 113 and the end of the upper shell 11. The housing 1 also includes a second gasket 14. The second gasket 14 is sleeved around the protruding ring 113 and supported on the first step 114. The end of a side wall of the second groove 121 is located on the first step 114 and abuts the second gasket 14. By adding the second gasket 14, the elastic deformation generated by the second gasket 14 when the protruding ring 113 is inserted into the annular groove 122 is utilized to fill the gap between the first step 114 and the end of the notch of the second groove 121, further improving the sealing between the upper shell 11 and the lower shell 12, and preventing external liquid from entering the interior of the housing 1.

[0045] It can be understood that the area enclosed by the inner circle of the second gasket 14 in its natural state should be smaller than the enclosed area of ​​the outer wall of the convex ring 113, so that when the second gasket 14 is sleeved on the convex ring 113, it needs to rely on the elasticity of the second gasket 14 itself to wrap the side wall 111 of the convex ring 113 away from the first groove, thereby improving the sealing performance of the second gasket 14 and reducing the possibility of external liquid entering the second groove 121 after passing through the second gasket 14.

[0046] It should be noted that since the second gasket 14 is sleeved on the protruding ring 113, it is in direct contact with the external environment. Therefore, the second gasket 14 should be made of a high-temperature and corrosion-resistant material to extend the service life of the second gasket 14 under the erosion of the external harsh environment, thereby improving the sealing performance between the upper shell 11 and the lower shell 12. The materials of the second gasket 14 include, but are not limited to, fluororubber, perfluororubber, hydrogenated nitrile rubber, EPDM rubber, acrylic rubber, etc.

[0047] In some embodiments, a second step 115 is formed between the protruding ring 113 and the end of the lower shell 12. The second step 115 is closer to the second groove 121 than the first step 114. The housing 1 further includes a third gasket 15, which is supported on the second step 115. The end of the other sidewall of the second groove 121 is located on the second step 115 and abuts the third gasket 15. The third gasket 15 relies on its own elastic deformation to fill the gap between the end of the other sidewall of the second groove 121 and the second step 115 when the protruding ring 113 is inserted into the annular groove 122, thereby improving the sealing performance of the connection between the upper shell 11 and the lower shell 12.

[0048] It can be understood that the inner ring of the third gasket 15 does not require any parts to be mounted, and is simply carried on the second step 115. Therefore, the area enclosed by the outer ring of the third gasket 15 in its natural state should be greater than or equal to the area enclosed by the inner wall of the convex ring 113, so that the third gasket 15 can be stably carried on the second step 115 to avoid unexpected displacement.

[0049] In some embodiments, a receiving groove (not shown) is provided at the bottom of the second step 115, and at least a portion of the third gasket 15 is received in the receiving groove. In order to ensure that the third gasket 15 can be fully deformed when the convex ring 113 is inserted into the annular groove 122, the depth of the above-mentioned receiving groove is relatively shallow, so that when the third gasket 15 is received in the receiving groove, most of the part protrudes from the receiving groove, which only serves to limit the third gasket 15, avoiding unexpected displacement of the third gasket 15, thereby affecting the installation and causing abnormal sealing function of the third gasket 15.

[0050] It should be noted that the first gasket 13 and the third gasket 15 need to withstand compression, and therefore, they need to ensure good elastic deformation capabilities. The materials of the first gasket 13 and the third gasket 15 include, but are not limited to, nitrile rubber, EPDM rubber, hydrogenated nitrile rubber, silicone rubber, fluorosilicone rubber, etc., which are not specifically limited in this embodiment.

[0051] In some embodiments, there are multiple protruding rings 113 and annular grooves 122, and the multiple protruding rings 113 are spaced apart and arranged in a spaced manner, with one protruding ring 113 inserted into one annular groove 122. The arrangement of the multiple protruding rings 113 and the multiple annular grooves 122 further extends the path required for external liquid to enter the interior of the housing 1 through the gap between the upper shell 11 and the lower shell 12. In addition, multiple first gaskets 13, second gaskets 14, and third gaskets 15 may be sequentially arranged between the multiple protruding rings 113 and the multiple annular grooves 122, thereby further improving the sealing performance of the connection between the protruding rings 113 and the annular grooves 122, thereby ensuring that the components inside the housing 1 are not corroded by liquid in the external environment.

[0052] In some embodiments, please refer to Figure 1 and Figure 3 The lower housing 12 is further provided with a wire hole 123. The servo 1000 also includes a wire 6 and a sealing ring 5. The sealing ring 5 is disposed in the wire hole 123. One end of the wire 6 is connected to the circuit board 4, and the other end of the wire 6 passes through the sealing ring 5 and extends outside the housing 1. Specifically, the sealing ring 5 is clamped by the wire 6 and the wire hole 123, and undergoes a certain degree of elastic deformation, so that the sealing ring 5 is in close contact with the outer wall of the wire 6 and the inner wall of the wire hole 123, effectively preventing foreign matter such as external liquids and dust from entering the housing 1 through the wire hole 123.

[0053] Furthermore, in order to enhance the blocking effect of the wire hole 123 on external foreign matter when the wire 6 is not passed through, the inner ring of the sealing ring 5 is in a closed state when in a natural state; when the wire 6 passes through the inner ring of the sealing ring 5, the inner ring of the sealing ring 5 undergoes a large elastic deformation, and the inner ring of the sealing ring 5, supported by the wire 6, forms an elastic deformation state that can completely cover the wire 6, so that when the sealing ring 5 needs to be disassembled and repaired to repair the driving mechanism 2, external foreign matter can enter the interior of the shell 1 through the wire hole 123.

[0054] In some embodiments, see Figure 3 The lower housing 12 has a limiting groove 1231 on the inner wall of the wire hole 123. The outer ring of the sealing ring 5 is provided with a limiting platform 51, which is inserted into the limiting groove 1231. The inner ring of the sealing ring 5 is sleeved onto the wire 6. The plug-in fit between the limiting platform 51 and the limiting groove 1231 further extends the movement path of external liquid into the interior of the housing 1 through the gap between the wire control and the sealing ring 5, thereby effectively blocking external liquid.

[0055] In some embodiments, drive mechanism 2 includes a bearing 7, the outer ring of which abuts the sidewall of through-hole 112, and the inner ring of which is sleeved onto the output shaft. Bearing 7 also includes a first sealing ring and a second sealing ring. The first sealing ring is disposed on the end surface of bearing 7 facing the outside world and is located between the inner and outer rings. The second sealing ring is disposed on the end surface of bearing 7 facing the accommodating cavity and is located between the inner and outer rings. The first and second sealing rings effectively prevent external impurities such as liquid from entering housing 1 through the ball gap between the inner and outer rings of bearing 7, thereby enhancing the waterproofing of bearing 7.

[0056] In some embodiments, the bearing 7 includes a first spring hoop (not shown) and a second spring hoop (not shown); the first sealing ring is provided with a first ring groove, and the first spring hoop is received in the first ring groove in a compressed state; the second sealing ring is provided with a second ring groove, and the second spring hoop is received in the second ring groove in a compressed state. By utilizing the pre-tightening force of the first spring hoop on the first ring groove in a compressed state, the first sealing ring can be firmly mounted on the outer ring or inner ring of the bearing 7, and the presence of the pre-tightening force ensures the stability of the installation of the first sealing ring; similarly, by utilizing the pre-tightening force of the second spring hoop on the second ring groove in a compressed state, the second sealing ring can be firmly mounted on the outer ring or inner ring of the bearing 7, and the presence of the pre-tightening force ensures the stability of the installation of the second sealing ring, thereby preventing the first sealing ring or the second sealing ring from falling off during the operation of the bearing 7.

[0057] In the embodiment of the present utility model, the servo 1000 includes a housing 1, a drive mechanism 2, an angle detection mechanism 3 and a circuit board 4. The housing 1 includes an upper shell 11 and a lower shell 12. The upper shell 11 is provided with a first groove 111 and a through hole 112. The through hole 112 connects the first groove 111 with the outside world. The upper shell 11 is provided with a convex ring 113 at the end of the notch of the first groove 111. The convex ring 113 surrounds the notch of the first groove 111. The lower shell 12 is provided with a second groove 121. The lower shell 12 is provided with an annular groove 122 at the end of the notch of the second groove 121. The annular groove 122 surrounds the first groove 111. The notches of the second grooves 121 are connected to the convex ring 113, which is inserted into the annular groove 122. The first groove 111 and the second groove 121 are connected to form an accommodating chamber. The drive mechanism 2, the angle detection mechanism 3 and the circuit board 4 are all accommodated in the accommodating chamber, and the output shaft of the drive mechanism 2 extends from the through hole 112 outside the housing 1. The angle detection mechanism 3 is used to detect the rotation angle of the output shaft and provide feedback to the circuit board 4 connected thereto; the circuit board 4 is used to receive the data detected by the angle detection mechanism 3 and control the movement of the drive mechanism 2 according to the internal control algorithm to meet the current working requirements. Through the above structure, the plug-in cooperation of the convex ring 113 and the annular groove 122 is used to extend the path for external liquid to enter the interior of the housing 1, thereby achieving a sealed connection between the upper shell 11 and the lower shell 12, improving the sealing effect between the upper shell 11 and the lower shell 12 of the detachable structure, and the plug-in structure of the convex ring 113 and the annular groove 122 strengthens the connection strength between the upper shell 11 and the lower shell 12, thereby improving the overall structural strength of the housing 1.

[0058] The present invention further provides an embodiment of an electronic device, which includes the aforementioned servo 1000. Regarding the structure and function of the servo 1000, please refer to the aforementioned embodiment, which will not be described in detail here.

[0059] It should be noted that the preferred embodiments of the present invention are given in the specification and drawings of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations on the content of the present invention. The purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of the present invention; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A steering gear with a waterproof housing, characterized in that: include: The housing comprises an upper shell and a lower shell, the upper shell being provided with a first groove and a through hole, the through hole connecting the first groove with the outside, the upper shell being provided with a convex ring at the end of the notch of the first groove, the convex ring surrounding the notch of the first groove, the lower shell being provided with a second groove, the lower shell being provided with an annular groove at the end of the notch of the second groove, the annular groove surrounding the notch of the second groove, the convex ring being inserted into the annular groove, and the first groove and the second groove being connected to form an accommodating cavity; A driving mechanism is disposed in the accommodating cavity, wherein an output shaft of the driving mechanism extends from the through hole to the outside of the housing; An angle detection mechanism is provided in the accommodating cavity, and is used to detect the rotation angle of the output shaft; A circuit board is arranged in the accommodating cavity, and the circuit board is connected to the angle detection mechanism and the driving mechanism.

2. The steering gear according to claim 1, characterized in that: The shell further includes a first washer, which is disposed in the annular groove. The convex ring abuts against the first washer after being inserted into the annular groove.

3. The steering gear according to claim 2, characterized in that: A first step is formed between the convex ring and the end of the upper shell; The housing further includes a second washer, the second washer is sleeved with the convex ring, and the second washer is supported on the first step. An end portion of a side wall of the second groove is located on the first step and abuts against the second washer.

4. The steering gear according to claim 3, characterized in that: A second step is formed between the convex ring and the end of the lower shell, and the second step is closer to the second groove than the first step; The housing further includes a third washer, which is carried on the second step. The end of the other side wall of the second groove is located on the second step and abuts against the third washer.

5. The steering gear according to claim 1, characterized in that: There are multiple convex rings and multiple annular grooves, and the multiple convex rings are spaced apart and sleeved, and one convex ring is inserted into one annular groove.

6. The steering gear according to claim 1, characterized in that: The lower shell is also provided with a wire hole; The servo also includes a wire and a sealing ring. The sealing ring is arranged in the wire hole. One end of the wire is connected to the circuit board, and the other end of the wire passes through the sealing ring and extends out of the shell.

7. The steering gear according to claim 6, characterized in that: The lower shell is provided with a limiting groove on the inner wall of the wire hole, the outer ring of the sealing ring is provided with a limiting platform, the limiting platform is plugged into the limiting groove, and the inner ring of the sealing ring is sleeved on the wire.

8. The steering gear according to any one of claims 1 to 7, characterized in that: The driving mechanism includes a bearing, the outer ring of the bearing abuts against the side wall of the through hole, and the inner ring of the bearing is sleeved on the output shaft; The bearing further includes a first sealing ring and a second sealing ring. The first sealing ring is arranged on the end surface of the bearing facing the outside world and is located between the inner ring and the outer ring. The second sealing ring is arranged on the end surface of the bearing facing the accommodating cavity and is located between the inner ring and the outer ring.

9. The steering gear according to claim 8, characterized in that: The bearing includes a first spring hoop and a second spring hoop; The first sealing ring is provided with a first ring groove, and the first spring hoop is received in the first ring groove in a compressed state; The second sealing ring is provided with a second ring groove, and the second spring hoop is received in the second ring groove in a compressed state.

10. An electronic device, characterized in that: Comprising a steering gear as described in any one of claims 1-9.

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