Motor riveting structure to prevent housing cracking
By introducing a crack-preventing cover plate and threaded shaft design into the stepper motor's packaging structure, the cracking problem at the connection between the housing and the protective sleeve is solved, enhancing the motor's stability and the wires' tensile strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU LONGDE TECH CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-06-30
AI Technical Summary
In the existing packaging structure of stepper motors, the connection between the housing and the protective sleeve is prone to cracking, leading to packaging failure.
The casing crack prevention cover is combined with the casing. Through the cooperation of positioning blocks and positioning holes, the casing clamps and grooves are connected to prevent cracking at the connection between the casing and the protective sleeve. The design of threaded shaft and fasteners enhances the tensile strength of the wire.
It effectively prevents cracking at the connection between the housing and the protective sleeve, enhances the tensile strength of the wires, and ensures stable operation of the motor.
Smart Images
Figure CN224438648U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of stepper motor housing packaging technology, and in particular to a motor riveting structure to prevent housing cracking. Background Technology
[0002] A stepper motor is a type of induction motor. Its working principle involves using electronic circuits to convert direct current into a time-sharing, multi-phase sequential control current. This current powers the stepper motor, allowing it to function properly. The driver is the multi-phase sequential controller that provides the time-sharing power to the stepper motor. Although stepper motors are widely used, they cannot be used like ordinary DC or AC motors under normal conditions. They require a control system consisting of dual-ring pulse signals, power drive circuits, and other components. During the manufacturing process of a stepper motor, a cover plate needs to be encapsulated.
[0003] The structure of commonly used stepper motors on the market is relatively simple. In particular, the motor's packaging structure has remained basically unchanged for decades. In the existing packaging structure, because there is no additional protection at the connection between the housing and the protective sleeve on both sides, the connection between the housing and the protective sleeve on both sides is prone to cracking after the packaging cover is removed and the motor has been running for a long time. Utility Model Content
[0004] In view of the shortcomings of the prior art, this application provides a riveting structure to prevent the motor housing from cracking, which overcomes the shortcomings of the prior art and aims to solve the problems in the prior art.
[0005] To achieve the above objectives, this application provides the following technical solution: a motor riveting anti-crack structure for the housing, comprising a housing and an anti-crack cover plate, wherein the housing and the anti-crack cover plate are adapted to each other, a rubber protective sleeve is fixedly connected to the outer wall of the housing, four positioning blocks are fixedly connected at equal intervals to the upper inner wall of the housing, four positioning holes are equidistantly opened on the outer wall of the anti-crack cover plate, the positioning blocks are adapted to the positioning holes, two housing clips are fixedly connected to the outer wall of the anti-crack cover plate, and clip grooves are opened at both ends of the connection between the housing and the rubber protective sleeve, the housing clips are adapted to the clip grooves.
[0006] By adopting the above technical solution, the anti-chassis crack cover is placed on the upper side inside the casing, aligning the positioning block with the positioning hole to play an auxiliary positioning role. Then, the anti-chassis crack cover is sealed on the upper side of the casing, and the casing latch will enter the latch groove to fasten it. This can protect the connection between the casing and the protective sleeve on both sides and prevent the casing and the protective sleeve from cracking.
[0007] As a preferred technical solution of this application, the front side of the protective shell is provided with a wire hole, and the top of the protective shell is provided with a plurality of threaded shafts. The bottom inner wall of the wire hole is fixedly connected with a plurality of lower fixing members, and the upper side inside the wire hole is provided with a plurality of upper fixing members. The inner wall of the lower fixing members is fixedly connected with a plurality of protrusions one, and the inner wall of the upper fixing members is fixedly connected with a plurality of protrusions two. The top of the upper fixing members is provided with a bearing. The threaded shafts are threadedly connected to the protective shell, the lower end of the threaded shafts is inside the wire hole, and the lower end of the threaded shafts is connected to the upper fixing members through a bearing.
[0008] By adopting the above technical solution, the rotating threaded shaft can drive the upper fixed part to move downward. Since the threaded shaft and the upper fixed part are connected by a bearing, the upper fixed part can not rotate during the downward movement. The lower fixed part and the upper fixed part can clamp the wire passing through the wire hole. Furthermore, the first and second protrusions increase the friction with the wire, thereby giving the wire better tensile strength.
[0009] As a preferred technical solution of this application, the number of threaded shafts, lower fixing parts and upper fixing parts are equal, and each threaded shaft, each lower fixing part and each upper fixing part corresponds one-to-one.
[0010] By adopting the above technical solution, multiple threaded shafts, lower fixing parts, and upper fixing parts can clamp multiple wires.
[0011] As a preferred technical solution of this application, a knob is fixedly installed on the upper end of the threaded shaft.
[0012] By adopting the above technical solution, it is convenient to rotate the threaded shaft.
[0013] As a preferred technical solution of this application, mounting plates are symmetrically arranged on both sides of the anti-chassis crack cover plate, and the mounting plates and the anti-chassis crack cover plate are integrally formed by casting, and mounting holes are provided on the mounting plates.
[0014] By adopting the above technical solution, the subsequent installation of the motor is facilitated.
[0015] As a preferred technical solution of this application, the upper parts of both sides of the housing are symmetrically provided with side holes that match the mounting plate.
[0016] By adopting the above technical solution, it is convenient for the mounting plate to pass through without affecting the sealing of the casing crack prevention cover.
[0017] The beneficial effects of this application are:
[0018] 1. By placing the anti-crack cover plate inside the housing on the upper side, aligning the positioning block with the positioning hole, it plays an auxiliary positioning role and prevents the sealing from deviating. Then, the anti-crack cover plate is sealed on the upper side of the housing, and the housing clip will enter the clip groove to fasten it. This can protect the connection between the housing and the protective sleeve on both sides and prevent cracks between the housing and the protective sleeve.
[0019] 2. The upper fixing part can be moved downward by rotating the threaded shaft. Since the threaded shaft and the upper fixing part are connected by a bearing, the upper fixing part can be supported so that it does not rotate during the downward movement. The lower fixing part and the upper fixing part can clamp the wire passing through the wire hole. Furthermore, the first and second protrusions increase the friction with the wire, thereby giving the wire better tensile strength. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this application;
[0021] Figure 2 For this application Figure 1 Enlarged view of A in the middle;
[0022] Figure 3 For this application Figure 1 A magnified view of B in the middle.
[0023] In the diagram: 1. Housing; 2. Housing crack prevention cover; 3. Rubber protective sleeve; 4. Mounting plate; 5. Mounting hole; 6. Housing latch; 7. Clamping groove; 8. Wire hole; 9. Threaded shaft; 10. Knob; 11. Positioning block; 12. Positioning hole; 13. Lower fixing part; 14. Upper fixing part; 15. Bearing; 16. Protrusion one; 17. Protrusion two; 18. Side hole. Detailed Implementation
[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0025] Reference Figure 1-2The motor riveting anti-crack structure includes a housing 1 and an anti-crack cover 2. The housing 1 and the anti-crack cover 2 are compatible. A rubber protective sleeve 3 is fixedly connected to the outer wall of the housing 1. Four positioning blocks 11 are fixedly connected at equal intervals to the upper inner wall of the housing 1. Four positioning holes 12 are opened at equal intervals on the outer wall of the anti-crack cover 2. The positioning blocks 11 are compatible with the positioning holes 12. Two housing clips 6 are fixedly connected to the outer wall of the anti-crack cover 2. Clip grooves 7 are opened at the connection between the housing 1 and the rubber protective sleeve 3 on both sides. The housing clips 6 are compatible with the clip grooves 7.
[0026] In use, by placing the anti-chassis crack cover 2 on the upper side inside the casing 1, the positioning block 11 is aligned with the positioning hole 12 to assist in positioning and prevent the sealing from deviating. Then, the anti-chassis crack cover 2 is sealed on the upper side of the casing 1, and the casing latch 6 will enter the latch groove 7 to fasten it. This can protect the connection between the casing 1 and the protective sleeve 3 on both sides and prevent the casing 1 and the protective sleeve 3 from cracking.
[0027] Reference Figure 1 and Figure 3 The protective sleeve 3 has a wire hole 8 on its front side, and several threaded shafts 9 pass through the top of the protective sleeve 3. Several lower fixing parts 13 are fixedly connected to the bottom inner wall of the wire hole 8, and several upper fixing parts 14 are provided on the upper side inside the wire hole 8. The cross-sections of the lower fixing parts 13 and the upper fixing parts 14 are both arc-shaped, and the lower fixing parts 13 and the upper fixing parts 14 are symmetrically distributed vertically. Several protrusions 16 are fixedly connected to the inner wall of the lower fixing parts 13, and several protrusions 17 are fixedly connected to the inner wall of the upper fixing parts 14. A bearing 15 is provided on the top of the upper fixing parts 14. The threaded shafts 9 are connected to the protective sleeve 3 by threads. The lower end of the threaded shafts 9 is inside the wire hole 8, and the lower end of the threaded shafts 9 is connected to the upper fixing parts 14 by the bearing 15.
[0028] In use, rotating the threaded shaft 9 can drive the upper fixing member 14 to move downward. Since the threaded shaft 9 and the upper fixing member 14 are connected by the bearing 15, the upper fixing member 14 can be supported so that it does not rotate during the downward movement. The lower fixing member 13 and the upper fixing member 14 can clamp the wire passing through the wire hole 8. The first protrusion 16 and the second protrusion 17 increase the friction with the wire, thereby giving the wire better anti-pull performance.
[0029] Reference Figure 3 The number of threaded shafts 9, lower fixing parts 13, and upper fixing parts 14 are equal, and each threaded shaft 9, each lower fixing part 13, and each upper fixing part 14 corresponds one-to-one. In use, multiple wires can be clamped by multiple threaded shafts 9, lower fixing parts 13, and upper fixing parts 14.
[0030] Reference Figure 1A knob 10 is fixedly installed on the upper end of the threaded shaft 9. In use, the threaded shaft 9 can be easily rotated by the knob 10.
[0031] Reference Figure 1 The anti-crack cover plate 2 has symmetrical mounting plates 4 on both sides. The mounting plates 4 and the anti-crack cover plate 2 are integrally formed by casting. The mounting plates 4 have mounting holes 5. In use, the mounting holes 5 on the mounting plates 4 facilitate the subsequent installation of the motor.
[0032] Reference Figure 2 The upper sides of the housing 1 are symmetrically provided with side holes 18 that match the mounting plate 4. In use, the mounting plate 4 can be easily passed through the side holes 18 that match the mounting plate 4 without affecting the sealing of the housing crack prevention cover 2.
[0033] Working principle: During the encapsulation process of the anti-chassis crack cover 2, the anti-chassis crack cover 2 is first placed on the upper side inside the casing 1, so that the positioning block 11 is aligned with the positioning hole 12, which plays an auxiliary positioning role and prevents the encapsulation from deviating. Then, the anti-chassis crack cover 2 is encapsulated on the upper side of the casing 1, and the casing latch 6 will enter the latch groove 7 to fasten it, which can protect the connection between the casing 1 and the protective sleeve 3 on both sides and prevent the casing 1 and the protective sleeve 3 from cracking.
[0034] In addition, after the wire passes through the wire hole 8, the upper fixing member 14 can be moved downward by rotating the threaded shaft 9. Since the threaded shaft 9 is connected to the upper fixing member 14 through the bearing 15, it can support the upper fixing member 14 so that it does not rotate during the downward movement. The lower fixing member 13 and the upper fixing member 14 can clamp the wire passing through the wire hole 8, and the first protrusion 16 and the second protrusion 17 increase the friction with the wire, thereby giving the wire better anti-pull performance.
[0035] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A riveted anti-crack structure for motor housing, comprising a housing (1) and an anti-crack cover plate (2), characterized in that, The housing (1) is adapted to the housing crack prevention cover (2). The outer wall of the housing (1) is fixedly connected to the rubber protective sleeve (3). The upper inner wall of the housing (1) is fixedly connected to four positioning blocks (11) at equal intervals. The outer wall of the housing crack prevention cover (2) is provided with four positioning holes (12) at equal intervals. The positioning blocks (11) are adapted to the positioning holes (12). The outer wall of the housing crack prevention cover (2) is fixedly connected to two housing fasteners (6). The connection between the housing (1) and the rubber protective sleeve (3) on both sides is provided with fastening grooves (7). The housing fasteners (6) are adapted to the fastening grooves (7).
2. The motor riveting anti-crack structure according to claim 1, characterized in that, The front side of the protective sleeve (3) is provided with a wire hole (8), and the top of the protective sleeve (3) is provided with several threaded shafts (9). Several lower fixing parts (13) are fixedly connected to the bottom inner wall of the wire hole (8), and several upper fixing parts (14) are provided on the upper side inside the wire hole (8). Several protrusions (16) are fixedly connected to the inner wall of the lower fixing parts (13), and several protrusions (17) are fixedly connected to the inner wall of the upper fixing parts (14). A bearing (15) is provided on the top of the upper fixing parts (14). The threaded shafts (9) are connected to the protective sleeve (3) by threads. The lower end of the threaded shafts (9) is inside the wire hole (8), and the lower end of the threaded shafts (9) is connected to the upper fixing parts (14) by the bearing (15).
3. The motor riveting anti-crack structure according to claim 2, characterized in that, The number of threaded shafts (9), lower fixing members (13) and upper fixing members (14) are equal, and each threaded shaft (9), each lower fixing member (13) and each upper fixing member (14) corresponds to one another.
4. The motor riveting anti-crack structure according to claim 2, characterized in that, A knob (10) is fixedly installed on the upper end of the threaded shaft (9).
5. The motor riveting anti-chamber cracking structure according to claim 1, characterized in that, The casing crack prevention cover (2) is symmetrically provided with mounting plates (4) on both sides. The mounting plates (4) and the casing crack prevention cover (2) are integrally formed by casting. The mounting plates (4) are provided with mounting holes (5).
6. The motor riveting anti-crack structure according to claim 5, characterized in that, The upper sides of the housing (1) are symmetrically provided with side holes (18) that match the mounting plate (4).