Wiring terminal assembly

Abstract

The utility model provides a wiring terminal assembly, which comprises a wiring support and a wiring terminal, the wiring support comprises an arc side wall and a circumferential clamping piece, the arc side wall is arranged on the side surface of the top of a motor stator and is matched and positioned with the outer cylindrical surface of the motor stator, and the circumferential clamping piece is arranged on the side surface of the top of the motor stator. The circumferential clamping piece is located above the top of the motor stator and connected with the arc side wall, and the circumferential clamping piece is provided with a plurality of clamping columns to form a surrounding type clamping groove which carries out axis limiting on the wiring terminal; the first end of the wiring terminal is inserted into the clamping groove to be clamped, the second end is provided with a lead connecting end, and the upper surface, away from the motor stator, of the wiring terminal is provided with wiring terminal butt joint holes communicated with the lead connecting end. According to the utility model, under the condition that the basic frame does not interfere with moving parts, the position fixing requirements of the wiring bracket and the motor as well as the wiring bracket and the wiring terminal can be met, and meanwhile, the relative accuracy of positioning can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of vehicle-mounted refrigeration equipment, in particular to a wiring terminal assembly. Background Art

[0002] The on-board electric scroll compressor based on the deep back shell design will face a new problem when connecting the terminal and the motor terminal, that is, the positioning of the motor terminal. Different from the traditional design, the deep back shell product installs the end of the motor with the terminal into the nearly closed back shell, and there is no space to manually connect the terminal and the terminal. Therefore, the intermediate component terminal bracket is required to define the position of the motor terminal, so as to realize the alignment installation of the subsequent terminal and the terminal bracket.

[0003] The surrounding environment of the terminal in the compressor is relatively compact, and there are moving parts such as the rotor around it. How to reasonably utilize the structural characteristics of parts such as the motor and the housing to fix the wiring bracket while meeting the space requirements is a difficulty in the design of deep back shell products, and is also a problem that the utility model needs to solve.

[0004] Patent CN114421684A discloses a motor terminal mounting bracket, including a bracket body and a snap mechanism. One side surface of the bracket body is a terminal mounting surface, and a snap mechanism is arranged on the mounting surface. A groove is provided on the other side of the bracket body, and mating surfaces for mating with the motor winding frame are provided on both sides of the groove. A plurality of mating holes for mating with the motor stator bolts are provided on the other side of the bracket body. Patent CN114421684A requires the use of motor stator fixing bolts to fix the bracket body. This solution cannot complete the fixing of the bracket when dealing with a heat-fit motor solution that does not use bolts for fixing. In terms of fixing the terminal, the contact surface between the two columnar snaps and the terminal is too small, and the positioning of the terminal is limited. The terminal is easily lifted up under the action of the lead wire, resulting in positioning failure.

[0005] In view of this, the utility model provides a terminal block assembly. Utility Model Content

[0006] In response to the problems in the prior art, the terminal assembly of the utility model overcomes the difficulties of the prior art and can meet the requirements of position fixing of the wiring bracket and the motor, the wiring bracket and the terminal without interfering with the moving parts, while achieving relative positioning accuracy.

[0007] An embodiment of the utility model provides a compressor suspension assembly, comprising:

[0008] Wiring brackets and terminals;

[0009] The wiring bracket includes: an arc-shaped side wall and a circumferential clamping member. The arc-shaped side wall is disposed on the side of the top of the motor stator and is positioned in cooperation with the outer cylindrical surface of the motor stator. The circumferential clamping member is located above the top of the motor stator and connects the arc-shaped side wall. The circumferential clamping member has a plurality of clamping posts to form a circumferential clamping groove for axially limiting the wiring terminal.

[0010] The first end of the wiring terminal is inserted into the clamping groove for clamping, and the second end is provided with a lead connection end. A wiring post docking hole communicated with the lead connection end respectively is provided on the upper surface of the wiring terminal facing away from the motor stator.

[0011] Preferably, two inner retracted shoulders are respectively provided on two sections of the outer arc surface of the arc-shaped side wall. The inner retracted shoulders are aligned with the current-carrying grooves of the motor stator to form a positioning channel into which at least two positioning posts of the heating sleeve tooling are inserted respectively. The middle part of the outer arc surface of the arc-shaped side wall is at least partially coplanar with the outer cylindrical surface of the motor stator.

[0012] Preferably, at least part of the first outer contour line of the first cross-section of the inner retracted shoulder based on the motor axis overlaps with at least part of the second outer contour line of the second cross-section of the current-carrying groove based on the motor axis.

[0013] Preferably, the circumferential clamping member includes an end plate and first, second, third, and fourth clamping posts protruding in the same direction from the four sides of the end plate. When the wiring terminal is inserted into the circumferential clamping groove, the first, second, third, and fourth clamping posts respectively clamp the four sides of the first end of the wiring terminal, and the end plate abuts against the first end of the wiring terminal. The outer peripheral surface of the third clamping post located outside the wiring terminal is coplanar with the outer arc surface of the arc-shaped side wall.

[0014] Preferably, the wiring post docking holes of the wiring terminal are arranged in a triangular pattern, and a clamping channel for inserting and clamping the first clamping post is formed between the wiring post docking holes.

[0015] Preferably, the circumferential clamping groove limits the insertion direction of the lead in the first direction perpendicular to the motor axis for the wiring bracket.

[0016] Preferably, the heating sleeve tooling includes a circular ring portion sleeved on the lower end of the motor stator and at least two positioning posts protruding from one side of the circular ring portion. The positioning posts respectively pass through the current-carrying grooves of the motor stator and the two inner retracted shoulders of the arc-shaped side wall.

[0017] Preferably, the heating sleeve tooling limits the wiring bracket in the second direction parallel to the motor axis, and the second direction is perpendicular to the first direction.

[0018] Preferably, the thermal sleeve tooling includes a plurality of columnar insertion rods which pass through the motor core and cooperate with the positioning columns for positioning.

[0019] An embodiment of the present invention further provides a wiring terminal assembly method, which uses the above-mentioned wiring terminal assembly and includes the following steps:

[0020] S110. Sleeve the thermal sleeve tooling on the lower end of the motor stator, and make the positioning columns of the thermal sleeve tooling pass through the current-carrying grooves at different positions of the motor stator;

[0021] S120. Align the wiring bracket based on the positioning columns and connect it to the top of the motor stator;

[0022] S130. Connect the motor lead wire to the lead wire connection end of the wiring terminal, and insert the wiring terminal into the circumferential clamping groove of the wiring bracket;

[0023] S140. Thermally sleeve the outer shell of the compressor on the outer periphery of the motor stator with the thermal sleeve tooling;

[0024] S150. Withdraw the thermal sleeve tooling from between the outer shell of the compressor and the motor stator.

[0025] The wiring terminal assembly of the present invention can, by using the motor end face, current-carrying grooves, the inner side of the shell, and the outer contour structure of the terminal, reasonably design the structure of the wiring bracket, and meet the position fixing requirements of the wiring bracket and the motor, and the wiring bracket and the wiring terminal under the basic framework of not interfering with the moving parts, and at the same time can achieve relative accuracy of positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects, and advantages of the present invention will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0027] Figure 1 is an assembly perspective view of the wiring terminal assembly of the present invention.

[0028] Figure 2 is a perspective view of the wiring bracket in the wiring terminal assembly of the present invention.

[0029] Figure 3 is a perspective view of the wiring terminal in the wiring terminal assembly of the present invention.

[0030] Figure 4 is a perspective view of the motor stator assembled with the wiring terminal assembly of the present invention.

[0031] Figure 5 is a perspective view of the thermal sleeve tooling assembled with the wiring terminal assembly of the present invention.

[0032] Reference numerals

[0033] 1 Wiring bracket

[0034] 11 Arc side wall

[0035] 12. Shoulder retraction

[0036] 13 Circumferential clamp

[0037] 14 Wraparound snap-in slots

[0038] 15 First column

[0039] 16 Second column

[0040] 17 The third column

[0041] 18 Fourth column

[0042] 19 End plate

[0043] 2. Heat-shrink tooling

[0044] 21 Ring

[0045] 22 Positioning column

[0046] 3 Motor stator

[0047] 31. Winding frame

[0048] 32 Winding

[0049] 33 Iron Core

[0050] 34 Flow channel

[0051] 35 Lead

[0052] 4 Terminal blocks

[0053] 41 Terminal connection hole

[0054] 42 Lead connection terminal

[0055] 43 snap-in channel DETAILED DESCRIPTION

[0056] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present application. The present application can also be implemented or applied through other different specific implementation methods, and the details in the present application can also be modified or changed in various ways according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0057] The following will refer to the accompanying drawings to provide a detailed description of the embodiments of the present application so that those skilled in the art to which the present application pertains can easily implement it. The present application can be embodied in many different forms and is not limited to the embodiments described herein.

[0058] In the description of the present application, the reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics represented in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics represented can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples represented in the present application and the features of different embodiments or examples.

[0059] In addition, the terms "first" and "second" are used only for the purpose of indication and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of these features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0060] To clearly illustrate the present application, devices irrelevant to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0061] Throughout the specification, when it is said that a device is "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" with other elements interposed therebetween. In addition, when it is said that a certain device "includes" a certain component, unless there is a particularly contrary record, it does not exclude other components but means that other components can also be included.

[0062] When it is said that a device is "above" another device, this can be directly above the other device, but it can also be accompanied by other devices therebetween. When it is said that a device is "directly" above another device by contrast, there are no other devices therebetween.

[0063] Although in some instances the terms first, second, etc. are used herein to denote various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface, etc. are indicated. Further, as used herein, the singular forms "a", "an", and "the" are intended to also include the plural forms unless the context clearly dictates otherwise. It should be further understood that the terms "comprising", "including" indicate the presence of the features, steps, operations, elements, components, items, kinds, and / or groups, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are to be construed as inclusive, or meaning any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C". An exception to this definition only occurs when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0064] The technical terms used herein are only for referring to specific embodiments and are not intended to limit the present application. The singular forms used herein also include the plural forms as long as the context does not clearly indicate the contrary. The meaning of "including" used in the specification is to embody specific characteristics, regions, integers, steps, operations, elements, and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0065] Although not defined differently, including the technical terms and scientific terms used herein, all terms have the same meaning as generally understood by those skilled in the technical field to which the present application pertains. Terms defined in commonly used dictionaries are additionally interpreted to have a meaning consistent with the relevant technical literature and the content currently presented, and should not be over-interpreted as ideal or overly formulaic meanings as long as they are not defined.

[0066] Figure 1 is an assembled perspective view of the wiring terminal assembly of the present utility model. Figure 2 is a perspective view of the wiring bracket in the wiring terminal assembly of the present utility model. Figure 3 is a perspective view of the wiring terminal in the wiring terminal assembly of the present utility model. Figure 4 is a perspective view of the motor stator assembled with the wiring terminal assembly of the present utility model. Figure 5 is a perspective view of the hot sleeve tooling assembled with the wiring terminal assembly of the present utility model. Refer to Figures 1 to 5As shown in the figure, the terminal assembly of the present utility model includes a wiring bracket 1 and a terminal 4. Among them, the wiring bracket 1 includes an arc-shaped side wall 11 and a circumferential clamping member 13. The arc-shaped side wall 11 is arranged on the side of the top of the motor stator 3 and is positioned in cooperation with the outer cylindrical surface of the motor stator 3. The circumferential clamping member 13 is located above the top of the motor stator 3 and is connected to the arc-shaped side wall 11. The circumferential clamping member 13 has a number of clamping columns to form a circumferential clamping groove 14 for axially limiting the docking terminal 4. The first end of the terminal 4 is inserted into the circumferential clamping groove 14 for clamping, and the second end is provided with a lead connection end 42. The motor lead can be inserted into the lead connection end 42 along the opening direction of the terminal 4 (in this embodiment, the opening direction of the terminal 4 is determined by the connection line between the first end and the second end of the terminal 4) for connection. The upper surface of the terminal 4 facing away from the motor stator 3 is provided with a terminal connection hole 41 that is respectively communicated with the lead connection end 42.

[0067] In a preferred embodiment, two inner retracted shoulders 12 are respectively provided on two sections of the outer arc surface of the arc-shaped side wall 11. The inner retracted shoulders 12 are aligned with the flow channels 34 of the motor stator 3 to form a positioning channel into which at least two positioning columns 22 of the heating sleeve tooling 2 can be inserted. The middle part of the outer arc surface of the arc-shaped side wall 11 is at least partially coplanar with the outer cylindrical surface of the motor stator 3, but not limited thereto.

[0068] In a preferred embodiment, at least a part of the first outer contour line of the inner retracted shoulder 12 based on the first cross-section in the axial direction of the motor overlaps with at least a part of the second outer contour line of the flow channel 34 based on the second cross-section in the axial direction of the motor, but not limited thereto.

[0069] In a preferred embodiment, the circumferential clamping member 13 includes an end plate 19 and first clamping columns 15, second clamping columns 16, third clamping columns 17, and fourth clamping columns 18 that protrude in the same direction from the four sides of the end plate 19. When the terminal 4 is inserted into the circumferential clamping groove, the first clamping columns 15, second clamping columns 16, third clamping columns 17, and fourth clamping columns 18 respectively clamp the four sides of the first end of the terminal 4, and the end plate 19 abuts against the first end of the terminal 4 (the end plate 19 can block the insertion depth of the terminal 4). The outer peripheral surface of the third clamping column 17 located outside the terminal 4 is coplanar with the outer arc surface of the arc-shaped side wall 11. After the heating sleeve is completed, the outer arc surface of the third clamping column 17 can abut against the inner peripheral surface of the compressor housing, and the rigidity of the inner peripheral surface of the housing is fully utilized to further enhance the clamping force of the circumferential clamping groove 14, but not limited thereto.

[0070] In a preferred embodiment, the terminal connection holes 41 of the terminal 4 are arranged in a triangular pattern, and a clamping channel 43 for inserting and clamping the second clamping column 16 is formed between the terminal connection holes 41, but not limited thereto.

[0071] In a preferred embodiment, the surrounding clamping groove 14 limits the lead insertion direction of the wiring bracket 1 in a first direction perpendicular to the axial direction of the motor. The lead insertion limit here refers to limiting the direction of the lead inserted into the terminal 4, but not limited thereto.

[0072] In a preferred embodiment, the hot sleeve tooling 2 includes a circular ring portion 21 sleeved on the lower end of the motor stator 3 and at least two positioning posts 22 protruding from one side of the circular ring portion 21. The positioning posts 22 respectively pass through the current-carrying grooves 34 of the motor stator 3 and two retracted shoulders 12 on the arc side wall 11, but not limited thereto.

[0073] In a preferred embodiment, the hot sleeve tooling 2 limits the wiring bracket 1 in a second direction parallel to the axial direction of the motor. The second direction is perpendicular to the first direction, but not limited thereto.

[0074] In a preferred embodiment, the hot sleeve tooling 2 includes a plurality of columnar insertion rods. The columnar insertion rods pass through the motor core and cooperate with the positioning posts 22 for positioning, but not limited thereto.

[0075] Continue to refer to the following Figures 1 to 5 , and introduce the specific implementation manners of the present invention:

[0076] Considering from the general perspective of the fixation of the wiring bracket 1, starting from the general components and features in the surrounding space of the wiring bracket 1, the present invention addresses the issues of the fixation of the wiring bracket 1 itself and the fixation of the wiring bracket 1 to the terminals. Whether the motor is installed by bolt fixation or hot sleeve method, the features that always exist are the end face of the iron core, the current-carrying grooves on the outer side of the iron core, and the winding skeleton of the motor. The wiring bracket 1 will be fixed under the action of the above three features and the hot sleeve tooling. Among them, the end face of the iron core is used to limit the axial position of the bracket, and the clamping posts of the hot sleeve tooling 2 will pass through the current-carrying grooves on the outer side of the motor iron core and then clamp the wiring bracket 1 in the gap formed with the motor winding skeleton. In this way, the appearance features of the motor are fully utilized to achieve the purpose of fixing the wiring bracket 1.

[0077] Continue to refer to Figure 1, the motor is limited by the end face, inner side face and clamping column of the shrink fitting 2. The lower end face of the wiring bracket 1 sits on the end face of the motor's iron core, and the axial positioning is limited by the cooperation with the shrink fitting 2. At the same time, the main part of the wiring bracket 1 is clamped between the motor winding skeleton and the shrink fitting 2 bracket, completing the fixation of the wiring bracket 1 relative to the motor. Under the action of the clamping column of the wiring bracket 1, the motor terminal is restricted in its remaining degrees of freedom unless it is withdrawn in the reverse direction of the insertion direction. Under the premise that the length of the motor lead is reasonable, the motor terminal and the wiring bracket 1 will fit more tightly under the push of the lead. In this way, the position fixation of the motor-wiring bracket 1 and the wiring bracket 1-motor terminal is completed. By adjusting the corresponding tolerances, the positioning of the wiring bracket 1 can be made more accurate, so as to achieve the purpose of accurately docking the terminal. In the present invention, the terminal block 4 is fixed from the perspective of increasing the contact surface. The terminal block 4 and the terminal bracket 1 are in more complete contact, leaving only one degree of freedom for installation and disassembly. In order to achieve accurate positioning and firm fixation, the buckle part of the bracket adopts a conformal design, which makes full use of the outer contour of the terminal block 4 and greatly reduces the possibility of the lead wire causing the terminal block 4 to overturn.

[0078] Continue to see Figure 2 The main structure of the wiring bracket 1 has arc surfaces inside and outside, and the upper and lower end surfaces are planes. The bracket body serves to connect the rest of the bracket and to be stuck between the shrink fit fixture 2 and the motor during installation, thus serving as a limit. The bracket body has two slots arranged along the arc direction, and the cross-sectional shape of the slots is consistent with the flow groove of the motor, which is convenient for matching with the clamping column of the shrink fit fixture 2. Three clamping columns for limiting the wiring terminals 4 are arranged above the bracket body.

[0079] Continue to see Figure 3 The wiring terminal 4 includes a wiring post docking hole and a lead wire connection terminal. When the wiring terminal 4 is fixed, the remaining surfaces thereof except the lead wire direction are limited by the wiring bracket 1.

[0080] Continue to see Figure 4 The motor stator 3 includes a winding frame 31, windings 32, a stator core 33 and lead wires 35, and the stator core 33 has axial flow slots 34.

[0081] Continue to see Figure 5, the body of the shrink-fitting tooling 2 is an annular frustum. The upper end face of the frustum is for placing the motor, and the inner side of the frustum is for radially limiting the motor. When necessary, a columnar structure can be added inside to pass through the core of the motor to make the radial limit of the motor more accurate. There are two axially extending clamping columns at the edge of the body. The cross-sectional shape of the clamping column matches the axial flow channel of the motor, and at the same time, it circumferentially limits the motor and the wiring bracket 1. The clamping column can be designed as a split part with the body of the shrink-fitting tooling 2 and fixed by bolts, which can improve the versatility of the shrink-fitting tooling 2. After the motor is shrink-fitted, the shrink-fitting tooling 2 is axially removed from the flow channel between the housing and the motor.

[0082] In the structure of the wiring bracket in the present utility model, it consists of the body of the bracket, the clamping groove for bracket fixing, and the clamping column for fixing the wiring terminal. Among them, the body and the clamping groove of the bracket are responsible for the relative fixation of the bracket and the motor, and the clamping column is responsible for the fixation with the wiring terminal. The fixing method of the wiring bracket is limited by the end face of the motor iron core, the winding skeleton, and the shrink-fitting tooling. The shrink-fitting tooling for supporting the wiring bracket has axially extending clamping columns. The clamping column and the main body of the shrink-fitting tooling can be integrally designed or combined in a split and fixed manner. When in use, while the clamping column fixes the motor, it limits the wiring bracket. After the assembly is completed, the shrink-fitting tooling is axially removed.

[0083] The present utility model also provides a wiring terminal assembly method, which uses the above-mentioned wiring terminal assembly, including the following steps:

[0084] S110. Sleeve the shrink-fitting tooling 2 on the lower end of the motor stator 3, and make the positioning column 22 of the shrink-fitting tooling 2 pass through the flow channels 34 at different positions of the motor stator 3.

[0085] S120. Align the wiring bracket 1 based on the positioning column 22 and connect it to the top of the motor stator 3.

[0086] S130. Connect the motor lead wire to the lead connection end 42 of the wiring terminal 4, and insert the wiring terminal 4 into the circumferential clamping groove 14 of the wiring bracket 1 (for reference, see Figure 1 's state).

[0087] S140. Heat-sleeve the housing of the compressor on the outer periphery of the motor stator 3 with the shrink-fitting tooling 2.

[0088] S150. Withdraw the shrink-fitting tooling 2 from between the housing of the compressor and the motor stator 3.

[0089] During the entire heat-sleeve installation process, the combination of the wiring bracket 1 and the wiring terminal 4 can accurately perform the lead wire docking with the cooperation of the shrink-fitting tooling 2. The relevant technical features and technical effects are as described above and will not be elaborated here.

[0090] The applicable scope of the present utility model is wider. In the case where the motor has an axial flow channel, whether the motor is fixed by bolts or not, the relative fixation of the wiring bracket and the motor can be completed. Compared with the structure of the prior art, the positioning of the wiring terminal of the present utility model is more firm. The sufficient contact and the conforming design concept greatly reduce the possibility of problems affecting the positioning such as deflection and overturning. At the same time, the positioning of the wiring terminal is more accurate, facilitating subsequent installation.

[0091] In summary, the wiring terminal assembly of the present utility model can, by using the motor end face, the flow channel, the inner side of the housing and the outer contour structure of the terminal, reasonably design the structure of the wiring bracket 1, and meet the position fixation requirements of the wiring bracket 1 and the motor, and the wiring bracket 1 and the wiring terminal under the basic framework of not interfering with the moving parts, and at the same time can achieve relative accuracy of positioning.

[0092] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. A terminal block assembly, characterized in that, Comprising: A wiring bracket (1) and a wiring terminal (4); The wiring bracket (1) includes: an arc-shaped side wall (11) and a circumferential clamping member (13). The arc-shaped side wall (11) is disposed on the side of the top of the motor stator (3) and is positioned in cooperation with the outer cylindrical surface of the motor stator (3). The circumferential clamping member (13) is located above the top of the motor stator (3) and connects the arc-shaped side wall (11). The circumferential clamping member (13) has a plurality of clamping posts to form a surrounding clamping groove (14) for axially limiting the wiring terminal (4); The first end of the wiring terminal (4) is inserted into the surrounding clamping groove (14) for clamping, and the second end is provided with a lead connection end (42). The upper surface of the wiring terminal (4) facing away from the motor stator (3) is provided with a wiring post docking hole (41) that is respectively communicated with the lead connection end (42).

2. The terminal block assembly according to claim 1, characterized in that, Two inner retracted shoulders (12) are respectively provided on two sections of the outer arc surface of the arc-shaped side wall (11). The inner retracted shoulders (12) are aligned with the current-carrying grooves (34) of the motor stator (3) to form a positioning channel into which at least two positioning posts (22) of the heat sleeve tooling (2) are respectively inserted. The middle part of the outer arc surface of the arc-shaped side wall (11) is at least partially coplanar with the outer cylindrical surface of the motor stator (3).

3. The terminal block assembly according to claim 2, characterized in that, At least part of the first outer contour line of the first cross-section of the inner retracted shoulder (12) along the motor axis overlaps with at least part of the second outer contour line of the second cross-section of the current-carrying groove (34) along the motor axis.

4. The terminal block assembly according to claim 2, characterized in that, The circumferential clamping member (13) includes an end plate (19) and first clamping posts (15), second clamping posts (16), third clamping posts (17), and fourth clamping posts (18) that protrude in the same direction from the four sides of the end plate (19). When the wiring terminal (4) is inserted into the surrounding clamping groove, the first clamping posts (15), second clamping posts (16), third clamping posts (17), and fourth clamping posts (18) respectively clamp the four sides of the first end of the wiring terminal (4). The end plate (19) abuts against the first end of the wiring terminal (4). The outer peripheral surface of the third clamping post (17) located outside the wiring terminal (4) is coplanar with the outer arc surface of the arc-shaped side wall (11).

5. The terminal block assembly according to claim 4, characterized in that, The wiring post docking holes (41) of the wiring terminal (4) are arranged in a pin shape, and a clamping channel (43) for inserting and clamping the second clamping post (16) is formed between the wiring post docking holes (41).

6. The terminal block assembly according to claim 4, wherein, The surrounding clamping groove (14) limits the lead insertion direction of the wiring bracket (1) in a first direction perpendicular to the motor axis.

7. The terminal block assembly according to claim 6, wherein, The heat sleeve tooling (2) includes a circular ring portion (21) sleeved on the lower end of the motor stator (3) and at least two positioning posts (22) protruding from one side of the circular ring portion (21). The positioning posts (22) respectively pass through the current-carrying grooves (34) of the motor stator (3) and the two inner retracted shoulders (12) of the arc-shaped side wall (11).

8. The terminal block assembly according to claim 7, characterized in that, The heat sleeve tooling (2) limits the wiring bracket (1) in a second direction parallel to the motor axis, and the second direction is perpendicular to the first direction.

9. The terminal block assembly according to claim 7, wherein, The hot-sheathing tooling (2) includes a plurality of columnar insertion rods which pass through the motor core and cooperate with the positioning columns (22) for positioning together.

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