A snap-fit ​​locking structure for motor and transmission box

Abstract

This utility model relates to a snap-fit ​​locking structure for a motor and a transmission box. It solves the technical problems of poor stability and cumbersome installation in existing motor-transmission box connections. It includes a transmission box body and a motor housing located on one side of the transmission box body. One side of the transmission box body has a recessed area matching the shape of the motor housing. One side of the motor housing is located within the recessed area, with one end of the transmission box body flush with one end of the motor housing. A positioning groove is located at one end of the recessed area, and a positioning protrusion that inserts into the positioning groove is located at the outer end of the motor housing. A snap-fit ​​positioning component is provided between the positioning protrusion and the positioning groove. A press-type snap-fit ​​locking component is provided between the other end of the recessed area and the end of the motor housing furthest from the positioning protrusion. The advantages are: by utilizing the two-end fixing mode of the snap-fit ​​positioning component and the press-type snap-fit ​​locking component, the forces are distributed evenly at both ends, significantly improving the overall connection stability and avoiding the problem of loosening at the locking point.

Description

Technical Field

[0001] This utility model belongs to the technical field of motors and transmission boxes, specifically relating to a snap-fit ​​locking structure for motors and transmission boxes. Background Technology

[0002] In various mechanical equipment, the motor, as the power source, needs to work closely with the transmission box to achieve efficient power transmission and conversion. However, traditional motor-transmission box connection methods have many drawbacks. Some existing technologies use simple slots and blocks, with connection holes and slots on the main transmission box, and a connection box and two sets of blocks around the rotating shaft on the upper part of the motor for locking and fixing. However, during long-term operation, due to factors such as vibration, the motor is very likely to detach from the transmission box. This may not only cause the motor to fall and be damaged, resulting in economic losses, but also affect the normal operation of the equipment and reduce work efficiency. At the same time, some methods that use screws to fix the motor and transmission box are not only cumbersome to install, but also require precise manual operation of the screw tightening force. Too little force may lead to an insecure connection and the cover falling off, while too much force may cause deformation of the transmission box, thus affecting the normal operation of the transmission mechanism. Summary of the Invention

[0003] The purpose of this utility model is to address the above-mentioned problems by providing a snap-fit ​​locking structure for the motor and transmission box.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a motor and transmission box snap-fit ​​locking structure, including a transmission box body and a motor housing disposed on one side of the transmission box body. One side of the transmission box body has a recessed area that matches the shape of the motor housing. One side of the motor housing is disposed within the recessed area, and one end of the transmission box body is flush with one end of the motor housing. One end of the recessed area has an inwardly recessed positioning groove, and one end of the outer side of the motor housing has a positioning protrusion that inserts into the positioning groove. A snap-fit ​​positioning component is provided between the positioning protrusion and the positioning groove, and a press-type snap-fit ​​locking component is provided between the other end of the recessed area and the end of the motor housing away from the positioning protrusion.

[0005] In the aforementioned snap-fit ​​locking structure between the motor and transmission housing, the length of the motor housing is less than the length of the transmission housing, and the width of the motor housing is equal to the width of the transmission housing. The recessed area is axially positioned along the transmission housing, with one end extending to one edge of the transmission housing and the other end having an arc-shaped portion that matches the outer side of the motor housing. The arc-shaped portion serves as an auxiliary positioning feature for the motor housing.

[0006] In the above-mentioned motor and transmission box snap-fit ​​locking structure, the motor housing is box-shaped and has an opening on the side of the motor housing near the transmission box. The opening of the motor housing is closed by a motor housing cover plate, and the positioning protrusion is integrally formed on the outer side of one end of the motor housing cover plate.

[0007] In the aforementioned snap-fit ​​locking structure for a motor and transmission box, the positioning groove matches the shape of the positioning protrusion, and the positioning groove is located at the end of the recessed area away from the arc-shaped portion. This ensures the accuracy and stability of the insertion, thereby achieving effective positioning.

[0008] In the above-mentioned locking and engaging structure of a motor and transmission box, the locking and positioning component includes several vertical locking parts disposed on the inner side of the end of the positioning groove away from the arc-shaped part, and the outer side of one end of the positioning protrusion has several vertical locking grooves corresponding one-to-one with the vertical locking parts, and the vertical locking parts are inserted into the vertical locking grooves.

[0009] In the aforementioned snap-fit ​​locking structure for a motor and transmission box, the positioning groove has arc-shaped transition portions on both sides of one end with a vertical snap-fit ​​portion. One side of each arc-shaped transition portion has an arc-shaped limiting piece, and the positioning protrusion has arc-shaped limiting grooves on both sides of one end with a vertical snap-fit ​​groove that abut against the arc-shaped limiting piece. The arc-shaped transition portion acts as a guide when the positioning protrusion is inserted into the positioning groove, improving assembly convenience. The abutment between the arc-shaped limiting piece and the arc-shaped limiting groove, based on the axial positioning achieved by the vertical snap-fit ​​portion and the vertical snap-fit ​​groove, adds lateral limiting, preventing possible lateral swaying between the motor housing and the transmission box, making the positioning structure more complete and the positioning effect more stable.

[0010] In the aforementioned snap-fit ​​locking structure between the motor and transmission box, the motor housing contains a motor body and a circuit board connected to the motor body. The motor body is connected to an output head protruding from the motor housing cover via a transmission assembly. A pulley is rotatably mounted inside the transmission box, and the output head inserts into the transmission box and is plugged into the pulley. The positioning and locking of the external structure ensures a stable connection between the motor housing and the transmission box, while the plugging of the internal output head into the pulley enables power transmission. The coordinated operation of the internal and external structures reflects the overall design's harmony.

[0011] In the aforementioned snap-fit ​​locking structure between the motor and transmission box, the circuit board is connected to a wire passing through a positioning protrusion. The transmission box, flush with the motor housing, has a wire-passing notch that communicates with the positioning groove. The wire passes through the positioning protrusion, and the wire-passing notch on the transmission box provides reasonable routing space for the wire, preventing it from being squeezed or damaged during assembly. Furthermore, the design of the wire-passing notch communicating with the positioning groove and being located at the same flush end utilizes existing structural space while ensuring smooth wiring.

[0012] In the above-mentioned motor and transmission box snap-fit ​​locking structure, the press-type snap-fit ​​locking assembly includes an elastic snap-fit ​​seat disposed on the inner side of the motor housing away from the positioning protrusion. The elastic snap-fit ​​seat has snap-fit ​​parts at both ends. The upper end of the snap-fit ​​part is provided with a snap-fit ​​connector that penetrates the motor housing cover plate axially upward. The recessed area is provided with snap-fit ​​grooves on both sides of the end away from the positioning groove, which are respectively provided with snap-fit ​​grooves corresponding to the snap-fit ​​connectors.

[0013] In the aforementioned snap-fit ​​locking structure for a motor and transmission box, the elastic snap-fit ​​seat has a pressing part axially penetrating the motor housing at the center of one side. A movable snap-fit ​​seat plate is located below the elastic snap-fit ​​seat. Both ends of the movable snap-fit ​​seat plate have elastic fixing parts corresponding to the snap-fit ​​part, and a spring is provided between the elastic fixing part and the snap-fit ​​part. When the pressing part is subjected to force, a series of components cause the snap-fit ​​connector to disengage from the snap-fit ​​groove, achieving unlocking. When the pressing part is released, under the action of the spring, the snap-fit ​​connector resets and snaps into the snap-fit ​​groove, achieving locking.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] 1. The device achieves initial positioning by inserting the positioning protrusion into the positioning groove, and the vertical locking part of the locking positioning component is inserted into the vertical locking groove one by one, thus realizing stable axial positioning.

[0016] 2. The recessed area of ​​the transmission housing of the device matches the shape of the motor housing, allowing the motor housing to be precisely embedded within it. At the same time, the curved part further restricts lateral swaying, thus forming a multi-directional, all-round positioning system. This effectively avoids relative displacement between the motor housing and the transmission housing, ensuring the accuracy of positioning and the stability of the structure.

[0017] 3. This device utilizes a two-end fixing mode of snap-fit ​​positioning component and press-type snap-locking component, with forces applied at both ends, which can evenly distribute external forces and greatly improve the overall stability of the connection, avoiding the problem of easy loosening of the locking point. At the same time, the press-type snap-locking component realizes the operation of pressing to unlock and automatically locking without the need for additional tools. Compared with traditional bolt connection methods, it greatly simplifies the assembly and disassembly process and improves operation efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the transmission box in this utility model.

[0020] Figure 3 This is the front view of the transmission box in this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the motor housing in this utility model.

[0022] Figure 5 This is the front view of the motor housing in this utility model.

[0023] Figure 6 This is a structural diagram of the internal structure of the motor housing in this utility model.

[0024] In the diagram: 1. Transmission housing; 11. Recessed area; 12. Positioning groove; 13. Arc-shaped part; 14. Arc-shaped transition part; 15. Arc-shaped limiting piece; 16. Arc-shaped limiting groove; 17. Pulley body; 18. Wire passing notch; 2. Motor housing; 21. Positioning protrusion; 22. Motor housing cover plate; 23. Motor body; 24. Circuit board; 25. Output head; 26. Wire; 3. Snap-fit ​​positioning assembly; 31. Vertical snap-fit ​​part; 32. Vertical snap-fit ​​groove; 4. Press-type snap-fit ​​locking assembly; 41. Elastic snap-fit ​​seat; 42. Snap-fit ​​connector; 43. Snap-fit ​​groove; 44. Pressing part; 45. Snap-fit ​​seat movable plate; 46. Elastic fixing part; 47. Spring component; 48. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1-6 As shown, a snap-fit ​​locking structure for a motor and a transmission housing includes a transmission housing 1 and a motor housing 2 disposed on one side of the transmission housing 1. One side of the transmission housing 1 has a recessed area 11 that matches the shape of the motor housing 2. One side of the motor housing 2 is disposed within the recessed area 11, and one end of the transmission housing 1 is flush with one end of the motor housing 2. One end of the recessed area 11 has an inwardly recessed positioning groove 12, and one end of the motor housing 2 on the outer side has a positioning protrusion 21 that is inserted into the positioning groove 12. A snap-fit ​​positioning component 3 is provided between the positioning protrusion 21 and the positioning groove 12, and a press-type snap-fit ​​locking component 4 is provided between the other end of the recessed area 11 and the end of the motor housing 2 away from the end with the positioning protrusion 21.

[0027] Combination Figures 1-5As shown, the length of the motor housing 2 is less than the length of the transmission housing 1, and the width of the motor housing 2 is equal to the width of the transmission housing 1. The recessed area 11 is provided along the axial direction of the transmission housing 1. One end of the recessed area 11 extends to one edge of the transmission housing 1, and the other end of the recessed area 11 has an arc-shaped portion 13 that matches the outer side of the motor housing 2. The arc-shaped portion 13 serves as an auxiliary positioning feature for the motor housing 2.

[0028] The motor housing 2 is box-shaped and has an opening on the side of the motor housing 2 closest to the transmission housing 1. The opening of the motor housing 2 is closed by the motor housing cover plate 22, and the positioning protrusion 21 is integrally formed on the outer side of one end of the motor housing cover plate 22.

[0029] Specifically, the positioning groove 12 matches the shape of the positioning protrusion 21, and the positioning groove 12 is located at the end of the recessed area 11 away from the arc-shaped part 13. This ensures the accuracy and stability of the insertion between the two, thereby achieving effective positioning.

[0030] Furthermore, the snap-fit ​​positioning component 3 includes several vertical snap-fit ​​portions 31 disposed on the inner side of the end of the positioning groove 12 away from the arc-shaped portion 13, and the outer side of one end of the positioning protrusion 21 has several vertical snap-fit ​​grooves 32 corresponding to the vertical snap-fit ​​portions 31, and the vertical snap-fit ​​portions 31 are inserted into the vertical snap-fit ​​grooves 32.

[0031] Furthermore, the positioning groove 12 has arc-shaped transition portions 14 on both sides of one end of the vertical locking portion 31, and an arc-shaped limiting piece 15 on one side of the arc-shaped transition portion 14. The positioning protrusion 21 has arc-shaped limiting grooves 16 on both sides of one end of the vertical locking groove 32, which abut against the arc-shaped limiting piece 15. The arc-shaped transition portion 14 acts as a guide when the positioning protrusion 21 is inserted into the positioning groove 12, improving assembly convenience. The abutment between the arc-shaped limiting piece 15 and the arc-shaped limiting groove 16, based on the axial positioning achieved by the vertical locking portion 31 and the vertical locking groove 32, adds lateral limiting, preventing possible lateral swaying between the motor housing 2 and the transmission box 1, making the positioning structure more complete and the positioning effect more stable.

[0032] Combination Figure 2 , Figure 4 and Figure 6 As shown, the motor housing 2 contains a motor body 23 and a circuit board 24 connected to the motor body 23. The motor body 23 is connected to an output head 25 that protrudes from the motor housing cover plate 22 via a transmission assembly. A pulley body 17 is rotatably mounted inside the transmission housing 1, and the output head 25 passes through the transmission housing 1 and is plugged into the pulley body 17. The positioning and locking of the external structure ensures a stable connection between the motor housing 2 and the transmission housing 1, while the plugging of the internal output head 25 into the pulley body 17 enables power transmission. The internal and external structures work together, demonstrating the overall design coordination.

[0033] The circuit board 24 is connected to a wire 26 that passes through the positioning protrusion 21. The transmission housing 1, flush with the motor housing 2, has a wire-passing notch 18 that communicates with the positioning groove 12. The wire 26 passes through the positioning protrusion 21, and the wire-passing notch 18 on the transmission housing 1 provides reasonable routing space for the wire 26, preventing the wire 26 from being squeezed or damaged during assembly. At the same time, the design of the wire-passing notch 18 communicating with the positioning groove 12 and being located at the same level as both utilizes the existing structural space and ensures smooth wiring.

[0034] Specifically, the press-type buckle locking assembly 4 includes an elastic snap-fit ​​seat 41 disposed on the inner side of the end of the motor housing 2 away from the positioning protrusion 21. The elastic snap-fit ​​seat 41 has snap-fit ​​parts 42 at both ends. The upper end of the snap-fit ​​part 42 is provided with a snap-fit ​​connector 43 that penetrates the motor housing cover plate 22 axially upward. The recessed area 11 is provided with snap-fit ​​grooves 44 on both sides of the end away from the positioning groove 12, which are respectively provided with snap-fit ​​grooves 44 corresponding to the snap-fit ​​connector 43.

[0035] Meanwhile, a pressing part 45 axially penetrates the motor housing 2 is provided in the middle of one side of the elastic locking seat 41. A locking seat movable plate 46 is provided below the elastic locking seat 41. Both ends of the locking seat movable plate 46 are respectively provided with elastic fixing parts 47 corresponding to the locking part 42, and a spring member 48 is provided between the elastic fixing part 47 and the locking part 42. When the pressing part 45 is subjected to force, the locking head 43 is disengaged from the locking groove 44 through the action of a series of components, thereby unlocking; when the pressing part 45 is released, the locking head 43 returns to the locking groove 44 under the action of the spring member 48, thereby locking.

[0036] The principle of this embodiment is as follows:

[0037] During assembly, the end of the motor housing 2 with the positioning protrusion 21 is aligned with the positioning groove 12 of the recessed area 11 of the transmission housing 1, and pushed in axially. The arc-shaped transition part 14 in the positioning groove 12 acts as a guide, guiding the positioning protrusion 21 to smoothly insert into the positioning groove 12. During this process, the arc-shaped limiting grooves 16 on both sides of the positioning protrusion 21 gradually fit with the arc-shaped limiting piece 15 in the positioning groove 12, forming a preliminary lateral limit to prevent left and right deviation during assembly. As the motor housing 2 is continuously pushed in, the vertical locking part 31 in the positioning groove 12 gradually aligns with and engages with the vertical locking groove 32 of the positioning protrusion 21. The vertical locking groove 32 and the vertical locking groove 31 are inserted one-to-one to restrict the relative movement of the motor housing 2 and the transmission box 1 from the axial direction. At the same time, the arc-shaped limiting piece 15 and the arc-shaped limiting groove 16 are completely abutted to further enhance the lateral positioning. At this time, one end of the motor housing 2 is accurately positioned. When the other end of the motor housing 2 is in contact with the arc-shaped part 13 of the recessed area 11, the press-type buckle locking component 4 starts to work. The buckle 43 passes through the motor housing cover plate 22 and is inserted into the corresponding locking groove 44 of the recessed area 11. At this time, both ends of the motor housing 2 are fixed by the buckle positioning component 3 and the press-type buckle locking component 4 respectively, and the whole is locked and assembled.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0039] Although this document frequently uses terms such as transmission housing 1, recessed area 11, positioning groove 12, arc-shaped part 13, arc-shaped transition part 14, arc-shaped limiting piece 15, arc-shaped limiting groove 16, pulley body 17, wire notch 18, motor housing 2, positioning protrusion 21, motor housing cover plate 22, motor body 23, circuit board 24, output head 25, wire 26, snap-fit ​​positioning assembly 3, vertical snap-fit ​​part 31, vertical snap-fit ​​groove 32, press-type snap-fit ​​locking assembly 4, elastic snap-fit ​​seat 41, snap-fit ​​part 42, snap-fit ​​connector 43, snap-fit ​​groove 44, pressing part 45, snap-fit ​​seat movable plate 46, elastic fixing part 47, spring part 48, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A snap-fit ​​locking structure for a motor and a transmission housing, comprising a transmission housing (1) and a motor housing (2) disposed on one side of the transmission housing (1), characterized in that, The transmission housing (1) has a recessed area (11) on one side that matches the shape of the motor housing (2). The motor housing (2) is located in the recessed area (11) on one side and one end of the transmission housing (1) is flush with one end of the motor housing (2). The recessed area (11) has an inwardly recessed positioning groove (12) at one end and a positioning protrusion (21) that is inserted into the positioning groove (12) at one end of the outer side of the motor housing (2). A snap-fit ​​positioning component (3) is provided between the positioning protrusion (21) and the positioning groove (12). A press-type snap-fit ​​locking component (4) is provided between the other end of the recessed area (11) and the end of the motor housing (2) away from the positioning protrusion (21).

2. The snap-fit ​​locking structure for a motor and transmission box according to claim 1, characterized in that, The length of the motor housing (2) is less than the length of the transmission box (1) and the width of the motor housing (2) is equal to the width of the transmission box (1). The recessed area (11) is arranged along the axial direction of the transmission box (1). One end of the recessed area (11) extends to one edge of the transmission box (1) and the other end of the recessed area (11) has an arc-shaped part (13) that matches the outer side of the motor housing (2).

3. The snap-fit ​​locking structure for a motor and transmission box according to claim 1, characterized in that, The motor housing (2) is box-shaped and has an opening on the side of the motor housing (2) near the transmission housing (1). The opening of the motor housing (2) is closed by the motor housing cover plate (22). The positioning protrusion (21) is integrally formed on the outer side of one end of the motor housing cover plate (22).

4. A snap-fit ​​locking structure for a motor and a transmission box according to claim 2 or 3, characterized in that, The positioning groove (12) matches the shape of the positioning protrusion (21), and the positioning groove (12) is located at the end of the recessed area (11) away from the arc-shaped part (13).

5. The snap-fit ​​locking structure for a motor and transmission box according to claim 4, characterized in that, The snap-fit ​​positioning component (3) includes several vertical snap-fit ​​parts (31) disposed on the inner side of one end of the positioning groove (12) away from the arc-shaped part (13). The outer side of one end of the positioning protrusion (21) has several vertical snap-fit ​​grooves (32) that correspond one-to-one with the vertical snap-fit ​​parts (31), and the vertical snap-fit ​​parts (31) are inserted into the vertical snap-fit ​​grooves (32).

6. The snap-fit ​​locking structure for a motor and transmission box according to claim 5, characterized in that, The positioning groove (12) has an arc-shaped transition portion (14) on both sides of one end of the vertical snap-fit ​​portion (31), and an arc-shaped limiting piece (15) on one side of the arc-shaped transition portion (14). The positioning protrusion (21) has an arc-shaped limiting groove (16) on both sides of one end of the vertical snap-fit ​​groove (32) that abuts against the arc-shaped limiting piece (15).

7. The snap-fit ​​locking structure for a motor and transmission box according to claim 3, characterized in that, The motor housing (2) contains a motor body (23) and a circuit board (24) connected to the motor body (23). The motor body (23) is connected to the output head (25) that passes through the motor housing cover plate (22) through a transmission assembly. The transmission box (1) contains a pulley body (17) that rotates inside. The output head (25) passes into the transmission box (1) and is plugged into the pulley body (17).

8. The snap-fit ​​locking structure for a motor and transmission box according to claim 1, characterized in that, The circuit board (24) is connected to a wire (26) that passes through the positioning protrusion (21). The transmission box (1) is flush with the motor housing (2) and has a wire passage notch (18) that communicates with the positioning groove (12).

9. The snap-fit ​​locking structure for a motor and transmission box according to claim 1, characterized in that, The press-type snap-lock assembly (4) includes an elastic snap-fit ​​seat (41) disposed on the inner side of the motor housing (2) away from the positioning protrusion (21). The elastic snap-fit ​​seat (41) is provided with snap-fit ​​parts (42) at both ends. The upper end of the snap-fit ​​part (42) is provided with a snap-fit ​​connector (43) that penetrates the motor housing cover plate (22) axially upward. The recessed area (11) is provided with snap-fit ​​grooves (44) on both sides of the end away from the positioning groove (12) that correspond to the snap-fit ​​connector (43).

10. The snap-fit ​​locking structure for a motor and transmission box according to claim 9, characterized in that, The elastic snap-fit ​​seat (41) has a pressing part (45) that axially penetrates the motor housing (2) in the middle of one side. The elastic snap-fit ​​seat (41) has a snap-fit ​​seat movable plate (46) below it. The snap-fit ​​seat movable plate (46) has elastic fixing parts (47) at both ends that correspond to the snap-fit ​​part (42). A spring (48) is provided between the elastic fixing part (47) and the snap-fit ​​part (42).

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