Brushless motor terminal plastic shell and stator cover assembly structure and working method thereof

Abstract

The present invention relates to the field of motor technology, and specifically to the technical field related to casings and outer covers; the present invention provides a brushless motor terminal plastic shell and stator cover assembly structure, including: a stator cover; a terminal plastic shell, which is clamped on the stator cover and has a wiring terminal arranged thereon; at least one buffer limit assembly, including: a limit block, and a buffer limit assembly slidably arranged at the opening of the limit block, and the buffer limit assembly is suitable for limiting the cable; wherein the cable forms a first pulling angle from the wiring terminal along the opening direction of the limit block, so as to trigger the cable to push the buffer limit assembly to slide slowly toward the wiring terminal, forming a second pulling angle for the cable. By setting the buffer limit assembly, the end of the cable is prevented from detaching from the wiring terminal, thereby improving the service life of the equipment.

Description

Technical Field

[0001] The present invention relates to the field of motor technology, specifically to casing and outer cover related technologies, and more particularly to a brushless motor terminal plastic shell and stator cover assembly structure and a working method thereof. Background Art

[0002] For the refrigerant-resistant brushless motor used in new energy vehicle air conditioners, the overall size of the motor is more compact than other industrial motors. The traditional three-phase lead installation method will increase the overall size of the motor.

[0003] Therefore, the direction of the three-phase lead wires of the refrigerant-resistant brushless motor used in new energy vehicle air conditioners needs to be different from that of traditional motors; the traditional cable installation method is that one end of the cable is fixed to the terminal on the stator cover, and after the cable is routed along the stator cover, the other end is connected and fixed to the main power supply.

[0004] However, with this installation method, when optimizing the layout of the cable routing, the ends of the cables will detach from the wiring terminals. Therefore, how to prevent the ends of the cables from detaching from the wiring terminals is a technical problem that needs to be urgently solved in the brushless motors for new energy vehicles. Summary of the invention

[0005] The purpose of the present invention is to provide a brushless motor terminal plastic shell and stator cover shell assembly structure.

[0006] In order to solve the above technical problems, the present invention provides a brushless motor terminal plastic shell and stator cover assembly structure, comprising:

[0007] stator housing;

[0008] A terminal plastic shell, which is clamped on the stator cover and has a connection terminal disposed thereon;

[0009] At least one buffering and limiting assembly comprises: a limiting block, and a buffering and limiting assembly slidably arranged at the opening of the limiting block, and the buffering and limiting assembly is suitable for limiting the cable; wherein,

[0010] The cable forms a first pulling angle from the wiring terminal along the opening direction of the limit block, so as to trigger the cable to push the buffer limit assembly to slide slowly toward the wiring terminal, thereby forming a second pulling angle of the cable.

[0011] Preferably, a slide groove is provided on the side wall of the limit block, and the sliding member of the buffer limit assembly is suitable for horizontal movement in the slide groove.

[0012] Preferably, the buffer limiter assembly comprises: a limiter plate, which is slidably arranged on the limiter block;

[0013] The connecting rod has two ends respectively fixed on the limit plate and the sliding member.

[0014] Preferably, the height of the sliding member is smaller than the slot height of the sliding slot.

[0015] Preferably, the sliding member comprises: a first positioning plate, the first positioning plate being vertically fixed to the lower end of the connecting rod;

[0016] A second positioning plate, which is horizontally arranged below the first positioning plate;

[0017] A hinge shaft, which is rotatably arranged on the second positioning plate, and the first positioning plate is fixed to the outer wall of the hinge shaft;

[0018] Among them, after the first positioning plate moves upward to abut against the inner top wall of the sliding groove, the limiting plate continues to move upward, and the first positioning plate is suitable for turning downward with the hinge axis as the axis.

[0019] Preferably, a limiting ring is fixed to the inner bottom wall of the limiting plate, and the inner wall of the limiting ring abuts against the outer wall of the cable.

[0020] Preferably, a sealing sleeve is sleeved on one end of the outer wall of the cable close to the wiring terminal, and the sealing sleeve abuts against the side wall of the terminal plastic shell.

[0021] Preferably, a plurality of shrinkage grooves are provided on the outer wall of the sealing sleeve along the circumferential direction, and the limiting ring is suitable for squeezing the sealing sleeve to shrink and deform in the direction of the terminal housing.

[0022] Preferably, a plurality of limit columns are fixed to the inner top wall of the slide slot, and the limit columns are suitable for abutting against the first positioning plate.

[0023] Preferably, the stator housing is provided with a wire retaining groove, and the cable is suitable for passing through the wire retaining groove.

[0024] Preferably, a slot is provided on the terminal plastic shell;

[0025] A buckle matched with the slot is fixed on the stator cover and is suitable for being inserted into the slot.

[0026] On the other hand, the present invention also provides a working method of the assembly structure of the brushless motor terminal plastic shell and the stator cover, characterized in that it includes:

[0027] After the sealing sleeve is sleeved on the outer wall of the cable, one end of the cable is fixed on the wiring terminal after passing through the buffer limit assembly;

[0028] The cable forms a first pulling angle from the wiring terminal along the opening direction of the limit block, so as to trigger the cable to push the buffer limit assembly to slide slowly toward the wiring terminal, thereby forming a second pulling angle of the cable.

[0029] The beneficial effect of the present invention is that the assembly structure of the terminal plastic shell and the stator cover of the brushless motor of the present invention, through the setting of the buffer limit assembly, when the cable is pulled to move toward the opening direction of the limit block to form a first pulling angle, the cable pushes the buffer limit assembly to make it slide slowly toward the terminal plastic shell direction, forming a second pulling angle of the cable. While the buffer limit assembly and the sliding member slide synchronously, they can reduce the pulling force on the cable near the wiring terminal to prevent it from detaching from the wiring terminal.

[0030] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practicing the present invention.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a stereogram of a preferred embodiment of the assembly structure of the brushless motor terminal plastic shell and the stator cover shell of the present invention;

[0034] Figure 2 is a three-dimensional diagram of the buffer limiter assembly of the present invention;

[0035] Figure 3 is a three-dimensional diagram of the buffer limit assembly and the sliding member of the present invention;

[0036] Figure 4 is a schematic diagram of a state in which the cable of the present invention is pulled to form a first pulling angle;

[0037] Figure 5 It is a schematic diagram of a state where the cable of the present invention is pulled to form a second pulling angle.

[0038] In the figure:

[0039] 1. stator housing; 11. wire slot; 12. slot;

[0040] 2. Terminal plastic shell; 21. Buckle; 22. Card block;

[0041] 3. Limit block; 30. Slide; 31. Limit column;

[0042] 4. Buffer limit assembly; 41. Limit plate; 42. Connecting rod; 43. Sliding member; 44. First positioning plate; 45. Second positioning plate; 46. Articulated shaft; 47. Limit ring;

[0043] 5. Sealing sleeve. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figures 1 to 5 As shown, in at least one embodiment, a brushless motor terminal plastic shell and stator cover assembly structure is provided, including: a stator cover 1, which is arranged on the motor stator; a wire clamping groove 11 is provided on the stator cover 1, and the cable is suitable for passing through the wire clamping groove 11. After one end of the cable is fixed on the wiring terminal, the cable passes through the wire clamping groove 11 and is fixed to the stator of the motor. A terminal plastic shell 2 is clamped on the stator cover 1 and is provided with a wiring terminal; a clamping groove 12 is provided on the terminal plastic shell 2; a buckle 21 adapted to the clamping groove 12 is fixed on the stator cover 1, which is suitable for inserting into the clamping groove 12. The terminal plastic shell 2 is clamped and fixed to the stator cover 1, which not only improves the stability of the fixation of the two, but also improves the quick connection between the two, and improves the work efficiency during assembly. Preferably, the terminal plastic shell 2 can be ultrasonically welded with the stator cover 1 to improve its waterproofness.

[0046] At least one buffer stopper assembly 4 includes: a stopper block 3, and a buffer stopper assembly 4 slidably arranged at the opening of the stopper block 3, and the buffer stopper assembly 4 is suitable for stopping the cable; wherein the cable forms a first pulling angle from the terminal along the opening direction of the stopper block 3, so as to trigger the cable to push the buffer stopper assembly 4 to slide slowly toward the terminal, thereby forming a second pulling angle of the cable. The stopper block 3 is fixed on the stator housing 1, and the opening of the stopper block 3 faces upward.

[0047] Reference Figure 4 and Figure 5 The cable is pulled upward along the opening direction of the limit block 3 to form a first pulling angle α, which refers to the angle between the force point of the cable and the fixed point of the cable and the terminal and the horizontal plane. The angle is greater than 30°; at this time, the cable is suitable for pushing the limit plate 41 to move horizontally along the limit block 3.

[0048] After the cable is limited by the limiting plate 41, a second pulling angle β is formed, which refers to an angle between the force point of the cable after being limited by the limiting plate 41 and the horizontal plane, extending to the fixing point of the cable and the terminal. The angle is smaller than α.

[0049] Reference Figure 2 The side wall of the limit block 3 is provided with a slide groove 30, and the sliding member 43 of the buffer limit assembly 4 is suitable for horizontal movement in the slide groove 30. The height of the sliding member 43 is less than the slot height of the slide groove 30. The sliding member 43 can move horizontally in the slide groove 30. When the limit plate 41 is driven by the cable to move in a direction away from the limit block 3, the limit plate 41 drives the sliding member 43 to slide upward synchronously until the upper end of the sliding member 43 abuts against the inner top wall of the slide groove 30.

[0050] Reference Figure 3 The buffer limit assembly 4 includes: a limit plate 41, which is slidably arranged on the limit block 3; the limit plate 41 is arranged above the cable. When the cable moves in the direction away from the limit block 3, the distance here refers to the cable moving upward away from the stator housing 1, the cable will push the limit plate 41 to slide horizontally in the direction of the terminal plastic shell 2, and the limit plate 41 plays a role in reducing the external force on the cable. The connecting rod 42, both ends of which are fixed on the limit plate 41 and the sliding member 43 respectively. The sliding member 43 includes: a first positioning plate 44, the first positioning plate 44 is vertically fixed at the lower end of the connecting rod 42; a second positioning plate 45, which is horizontally arranged below the first positioning plate 44; a hinge shaft 46, which is rotatably arranged on the second positioning plate 45, and the first positioning plate 44 is fixed to the outer wall of the hinge shaft 46; wherein, after the first positioning plate 44 moves upward to abut against the inner top wall of the slide slot 30, the limit plate 41 continues to move upward, and the first positioning plate 44 is suitable for turning downward with the hinge shaft 46 as the axis. When the cable pushes the limit plate 41 to move upward, the limit plate 41 simultaneously drives the first positioning plate 44 and the second positioning plate 45 to move upward until the first positioning plate 44 abuts against the inner top wall of the slide slot 30. At this time, the first positioning plate 44 is in surface contact with the inner top wall of the slide slot 30. When the cable continues to drive the limit plate 41 to move upward, when the limit plate 41 moves away from the limit block 3, the limit plate 41 drives the first positioning plate 44 to flip downward with the hinge shaft 46 as the axis until the first positioning plate 44 abuts against the second positioning plate 45. At this time, the first positioning plate 44 is in an inclined state, and the first positioning plate 44 is in line contact with the inner bottom wall of the slide slot 30; when the cable pushes the limit plate 41 to move horizontally, the friction between the first positioning plate 44 and the slide slot 30 is reduced.

[0051] Furthermore, a limiting ring 47 is fixed to the inner bottom wall of the limiting plate 41, and the inner wall of the limiting ring 47 abuts against the outer wall of the cable. A sealing sleeve 5 is sleeved on one end of the outer wall of the cable close to the terminal, and abuts against the side wall of the terminal plastic shell 2.

[0052] The outer wall of the sealing sleeve 5 is provided with a plurality of shrinkage grooves along the circumferential direction, and the limiting ring 47 is suitable for squeezing the sealing sleeve 5 to shrink and deform in the direction of the terminal cover. When the limiting plate 41 moves horizontally, it drives the limiting ring 47 to move horizontally synchronously, and the limiting ring 47 pushes the sealing sleeve 5 on the outer wall of the cable to shrink and deform until the limiting plate 41 abuts against the side wall of the terminal plastic shell 2. The limiting ring 47 squeezes the sealing sleeve 5 to seal the gap between the outer wall of the cable and the terminal plastic shell 2, thereby preventing dust from entering the terminal plastic shell 2.

[0053] The stator housing 1 is symmetrically provided with two clamping blocks 22 corresponding to the terminal plastic housing 2 . The clamping blocks 22 are arranged at the terminal plastic housing 2 away from the limiting plate 41 . The clamping blocks 22 are suitable for preventing the terminal plastic housing 2 from deforming and rebounding.

[0054] In order to increase the resistance to the buffer limit assembly 4, a plurality of limit columns 31 are fixed to the inner top wall of the slide groove 30, and the limit columns 31 are suitable for abutting against the first positioning plate 44. The stator housing 1 is provided with a wire clamping groove 11, and the cable is suitable for passing through the wire clamping groove 11. When the first positioning plate 44 is flipped downward with the hinge shaft 46 as the axis, the limit column 31 intermittently abuts against the first positioning plate 44 during the process of the limit plate 41 moving horizontally toward the terminal plastic shell 2. The limit column 31 is suitable for pushing the first limit plate 41 to move downward, and the resistance of the first positioning plate 44 when passing over the limit column 31 increases; so that the movement speed of the limit plate 41 on the limit block 3 is slowed down. At the same time, the limit plate 41 moves downward so that the limit ring 47 can better squeeze the sealing sleeve 5.

[0055] In some embodiments, the present invention further provides a working method of a brushless motor terminal plastic shell and stator cover assembly structure, comprising:

[0056] After the sealing sleeve 5 is sleeved on the outer wall of the cable, the cable passes through the buffer limit assembly 4 and one end is fixed on the wiring terminal;

[0057] The cable forms a first pulling angle from the wiring terminal along the opening direction of the limit block 3, so as to trigger the cable to push the buffer limit assembly 4 to slide slowly toward the wiring terminal, thereby forming a second pulling angle of the cable.

[0058] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0060] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A brushless motor terminal plastic shell and stator cover assembly structure, characterized in that: include: Stator housing (1); A terminal plastic shell (2) which is clamped onto the stator housing (1) and on which a connection terminal is arranged; at least one buffer limit assembly (4) and a limit block (3), the limit block (3) being fixed on the stator housing (1), and the limit block (3) having an opening facing upwards; The buffering and limiting assembly (4) is slidably arranged at the opening of the limiting block (3), and the buffering and limiting assembly (4) is suitable for limiting the cable; wherein: The cable forms a first pulling angle from the wiring terminal along the opening direction of the limit block (3), so as to trigger the cable to push the buffer limit assembly (4) to make it slide slowly in the direction of the wiring terminal, thereby forming a second pulling angle of the cable; A slide groove (30) is provided on the side wall of the limit block (3), and the sliding member (43) of the buffer limit assembly (4) is suitable for horizontal movement in the slide groove (30); The buffer limiter assembly (4) comprises: a limiter plate (41) which is slidably disposed on the limiter block (3); A connecting rod (42), two ends of which are respectively fixed on the limiting plate (41) and the sliding member (43); The height of the sliding member (43) is smaller than the slotting height of the sliding slot (30); The sliding member (43) comprises: a first positioning plate (44), wherein the first positioning plate (44) is vertically fixed to the lower end of the connecting rod (42); A second positioning plate (45) disposed horizontally below the first positioning plate (44); A hinge shaft (46) rotatably disposed on the second positioning plate (45), and the first positioning plate (44) is fixed to the outer wall of the hinge shaft (46); After the first positioning plate (44) moves upwards until it abuts against the inner top wall of the slide groove (30), the limiting plate (41) continues to move upwards, and the first positioning plate (44) is suitable for turning downwards with the hinge shaft (46) as the axis.

2. The assembly structure of the brushless motor terminal plastic shell and stator cover as claimed in claim 1, characterized in that: A limiting ring (47) is fixed to the inner bottom wall of the limiting plate (41), and the inner wall of the limiting ring (47) abuts against the outer wall of the cable.

3. The assembly structure of the brushless motor terminal plastic shell and stator cover as claimed in claim 2, characterized in that: A sealing sleeve (5) is sleeved on one end of the outer wall of the cable close to the wiring terminal, and the sealing sleeve abuts against the side wall of the terminal plastic shell (2).

4. The assembly structure of the brushless motor terminal plastic shell and stator cover as claimed in claim 3, characterized in that: The outer wall of the sealing sleeve (5) is provided with a plurality of shrinkage grooves along the circumferential direction, and the limiting ring (47) is suitable for squeezing the sealing sleeve (5) to shrink and deform in the direction of the terminal cover.

5. The assembly structure of the brushless motor terminal plastic shell and stator cover as claimed in claim 4, characterized in that: A plurality of limiting columns (31) are fixed to the inner top wall of the slide groove (30), and the limiting columns (31) are suitable for abutting against the first positioning plate (44).

6. The assembly structure of the brushless motor terminal plastic shell and stator cover as claimed in claim 5, characterized in that: The stator housing (1) is provided with a wire retaining groove (11), and the cable is suitable for passing through the wire retaining groove (11).

7. The assembly structure of the brushless motor terminal plastic shell and stator cover as claimed in claim 6, characterized in that: The terminal plastic shell (2) is provided with a slot (12); A buckle (21) adapted to the clamping slot (12) is fixed on the stator housing (1) and is suitable for being inserted into the clamping slot (12).

8. A working method of the assembly structure of the brushless motor terminal plastic shell and stator cover as claimed in claim 1, characterized in that: include: After the sealing sleeve (5) is sleeved on the outer wall of the cable, the cable passes through the buffer limit assembly (4) and one end of the cable is fixed on the wiring terminal; The cable forms a first pulling angle from the wiring terminal along the opening direction of the limit block (3), so as to trigger the cable to push the buffer limit assembly (4) to slide slowly in the direction of the wiring terminal, thereby forming a second pulling angle of the cable.

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