Outer stator wiring assembly

Abstract

The invention provides an outer stator wiring assembly comprising an outer stator which comprises a lead wire framework and a tooth part for winding a lead wire, and the lead wire framework is provided with at least one wire winding hole; the wiring terminal comprises a junction box upper cover, a junction box lower cover and an arc-shaped mounting bracket, a plurality of second wiring holes are formed in the upper surface of the junction box upper cover, the junction box upper cover and the junction box lower cover are oppositely combined to jointly form a plurality of first wiring holes, and the mounting bracket is connected to the outer side, deviating from the outer stator rotating shaft, of the junction box lower cover; the lower surface of the installation support is connected with the outer edge of the upper surface of the outer stator in a pressing mode, and the installation support is provided with a protruding positioning clamping tenon facing the rotating shaft of the outer stator and clamped in the winding hole. According to the invention, the terminal support and the motor can be relatively fixed without being influenced by the fixing form of the motor, the possibility of deflection, overturning and the like of the wiring terminal is avoided, the positioning is accurate, the installation is convenient and stable, the installation efficiency is improved, and errors generated during installation are reduced.

Description

Technical Field

[0001] The invention relates to the field of vehicle-mounted refrigeration equipment, and in particular to an external stator connection 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] Patent CN114421684A discloses a motor terminal mounting bracket, which includes a bracket body and a mounting buckle. A mounting buckle is provided on one side of the bracket to facilitate the installation of the terminal, and a groove is designed on the other side, and matching surfaces matching the motor lead frame are provided on both sides of the groove. In addition, a plurality of holes matching the motor stator bolts are provided on the bracket to facilitate installation and fixing.

[0004] Patent CN114421684A has certain limitations. It needs to use the motor stator fixing bolts to fix the bracket body, and it is not suitable for the heat-shrink motor solution. In terms of fixing the terminal, the gap between the bracket and the terminal is large, and the positioning of the terminal is limited. The terminal is easy to be lifted up under the action of the lead wire, resulting in positioning failure. In addition, there is a risk of breakage of the split installation buckle during installation.

[0005] In view of this, the present invention provides an outer stator terminal assembly. Summary of the invention

[0006] In response to the problems in the prior art, the external stator terminal assembly of the present invention overcomes the difficulties of the prior art and is not affected by the fixing form of the motor. It can complete the relative fixation of the terminal bracket and the motor, avoids the possibility of deflection and overturning of the terminal, etc., has accurate positioning, convenient and stable installation, improves installation efficiency, and reduces errors generated during installation.

[0007] An embodiment of the present invention provides an outer stator connection assembly, comprising:

[0008] An outer stator, the outer stator comprising a lead frame and a tooth portion for winding a lead, the lead frame being provided with at least one winding hole;

[0009] A wiring terminal comprises a wiring box upper cover, a wiring box lower cover and an arc-shaped mounting bracket, wherein the upper surface of the wiring box upper cover is provided with a plurality of second wiring holes, the wiring box upper cover and the wiring box lower cover are matched to form a plurality of first wiring holes together, the mounting bracket is connected to the outer side of the wiring box lower cover away from the outer stator rotation axis, the lower surface of the mounting bracket is pressed against the outer edge of the upper surface of the outer stator, the mounting bracket has a positioning tenon protruding toward the outer stator rotation axis, and the positioning tenon is engaged with the winding hole.

[0010] Preferably, the junction box lower cover and the mounting bracket are integrally formed.

[0011] Preferably, the lower surface of the mounting bracket is pressed against the upper surface of the stator silicon steel sheet at the outer periphery of the outer stator.

[0012] Preferably, each of the first wiring holes is connected to a corresponding second wiring hole through an independent channel.

[0013] Preferably, the winding hole is a pill hole, the upper edge and the lower edge of the pill hole are flat edges, and the left edge and the right edge of the pill hole are semicircular edges.

[0014] Preferably, an inverted right triangle is formed on the positioning tenon, and the base of the right triangle abuts against the flat edge of the upper edge of the inner circumference of the winding hole.

[0015] Preferably, the junction box upper cover and the junction box lower cover are buckled with each other via buckles.

[0016] Preferably, a gap is formed between the lower cover of the junction box and the upper surface of the lead frame.

[0017] Preferably, a gap is formed between the lower cover of the junction box and the upper surface of the teeth of the outer stator.

[0018] Preferably, a motor lead for connecting a lead is provided on the upper surface of the outer stator, and the motor lead is connected to the first wiring hole through a cable.

[0019] The external stator terminal assembly of the present invention can reasonably design the terminal bracket structure by utilizing the motor end face, flow groove, inner side of the shell and the outer contour structure of the terminal. Under the basic framework without interfering with the moving parts, it can meet the position fixing requirements of the terminal bracket and the motor, the terminal bracket and the terminal, and can achieve relative positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0021] Figure 1It is a three-dimensional view of the outer stator terminal assembly of the present invention.

[0022] Figure 2 It is a stereoscopic view of the connection terminals in the outer stator connection assembly of the present invention.

[0023] Figure 3 It is a top view of the outer stator terminal assembly of the present invention.

[0024] Figure 4 yes Figure 3 Sectional view along AA direction.

[0025] Figure 5 yes Figure 4 A partial enlarged view of .

[0026] Figure 6 1 is a top view of the outer stator of the present invention.

[0027] Figure 7 yes Figure 6 Cross-sectional view along the BB axis.

[0028] Reference numerals

[0029] 1 External stator

[0030] 2 Lead frame

[0031] 21 Winding hole

[0032] 3 Motor leads

[0033] 4 Terminal blocks

[0034] 41 Junction box cover

[0035] 42 Junction box lower cover

[0036] 43 Positioning tenon

[0037] 44 First wiring hole

[0038] 45 Second wiring hole

[0039] 46 Mounting bracket

[0040] 5 Stator silicon steel sheet

[0041] 6 Teeth DETAILED DESCRIPTION

[0042] 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.

[0043] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in a variety of different forms and is not limited to the embodiments described herein.

[0044] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] In order to clearly describe the present application, components irrelevant to the description are omitted, and the same reference symbols are given to the same or similar components throughout the specification.

[0047] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0048] When a device is said to be "on" another device, it may be directly on the other device, but there may also be other devices between it. In contrast, when a device is said to be "directly" on another device, there are no other devices between it.

[0049] Although the terms first, second, etc. are used to represent various elements in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate the existence of features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "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". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0050] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present application. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify 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.

[0051] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which this application belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with the relevant technical literature and the contents of the current disclosure, and unless defined, shall not be overly interpreted as ideal or very formal meanings.

[0052] Figure 1 It is a three-dimensional view of the outer stator terminal assembly of the present invention. Figure 2 It is a stereoscopic view of the connection terminals in the outer stator connection assembly of the present invention. Figure 3 It is a top view of the outer stator terminal assembly of the present invention. Figure 4 yes Figure 3 Sectional view along AA direction. Figure 5 yes Figure 4 A partial enlarged view of . Figure 6 1 is a top view of the outer stator of the present invention. Figure 7 yes Figure 6 The cross-sectional view along the BB axis. Figures 1 to 7As shown, the outer stator wiring assembly of the present invention comprises: an outer stator 1 and a wiring terminal 4. The outer stator 1 at least comprises a lead frame 2 and a tooth portion 6 for winding the lead wire, and the lead frame 2 is provided with at least one winding hole 21. The wiring terminal 4 comprises a wiring box upper cover 41, a wiring box lower cover 42 and an arc-shaped mounting bracket 46. The upper surface of the wiring box upper cover 41 is provided with a plurality of second wiring holes 45. The wiring box upper cover 41 and the wiring box lower cover 42 both have semicircular grooves. When the wiring box upper cover 41 and the wiring box lower cover 42 are matched, the upper and lower semicircular grooves jointly form a plurality of first wiring holes 44. The mounting bracket 46 is connected to the outer side of the wiring box lower cover 42 away from the rotation axis of the outer stator 1. The lower surface of the mounting bracket 46 is pressed against the outer edge of the upper surface of the outer stator 1. The mounting bracket 46 has a positioning tenon 43 protruding toward the rotation axis of the outer stator 1, and the positioning tenon 43 is engaged with the winding hole 21.

[0053] In a preferred embodiment, the junction box lower cover 42 and the mounting bracket 46 are integrally formed, but not limited thereto.

[0054] In a preferred embodiment, the lower surface of the mounting bracket 46 is pressed against the upper surface of the stator silicon steel sheet 5 at the outer periphery of the outer stator 1 , but the present invention is not limited thereto.

[0055] In a preferred embodiment, each first wiring hole 44 is connected to a corresponding second wiring hole 45 through an independent channel, but the present invention is not limited thereto.

[0056] In a preferred embodiment, the winding hole 21 is a pill hole, the upper edge and the lower edge of the pill hole are flat edges, and the left edge and the right edge of the pill hole are semicircular edges, but not limited thereto.

[0057] In a preferred embodiment, the positioning tenon 43 is in the shape of an inverted right triangle, and the base of the right triangle abuts against the flat edge of the upper edge of the inner circumference of the winding hole 21 , but the present invention is not limited thereto.

[0058] In a preferred embodiment, the junction box upper cover 41 and the junction box lower cover 42 are buckled together by means of buckles, but the present invention is not limited thereto.

[0059] In a preferred embodiment, a gap is formed between the lower cover 42 of the junction box and the upper surface of the lead frame 2, but the present invention is not limited thereto.

[0060] In a preferred embodiment, a gap is formed between the lower cover 42 of the terminal box and the upper surface of the tooth portion 6 of the outer stator 1 , but the present invention is not limited thereto.

[0061] In a preferred embodiment, the upper surface of the outer stator 1 is provided with a motor lead 3 for connecting the leads, and the motor lead 3 is connected to the first wiring hole 44 through a cable, but the present invention is not limited thereto.

[0062] The terminal block 4 in the present invention adopts an integrated terminal block fixing bracket, including a first wiring hole 44, a second wiring hole 45, an arc-shaped mounting bracket 46 and a fixing buckle. Among them, the arc-shaped mounting bracket 46 and the positioning tenon 43 are responsible for the relative fixation of the terminal block 4 and the motor. The fixing method of the terminal block 4 is limited by the end face of the motor stator, the lead frame 2 and its winding hole and the positioning tenon 43.

[0063] The present invention starts with the integration of the mounting bracket and the terminal block and the mounting method of the bracket, so as to achieve the purpose of firmly positioning the mounting bracket and avoiding the breakage of the buckle. The mounting bracket and a part of the terminal block are integrated, and the buckle used to constrain the terminal block on the original bracket is eliminated, so as to achieve the purpose of firmly positioning the terminal block and avoiding the breakage of the buckle. Whether the motor is fixed by bolts or by heat-shrunk, the features that always exist are the end face of the stator, the flow groove outside the core, and the lead frame of the motor. The mounting bracket will use the above three features for fixing.

[0064] See also Figure 1 and 2 As shown, the terminal block 4 of the present invention comprises a junction box upper cover 41, a junction box lower cover 42 and an arc-shaped mounting bracket 46. Among them, the junction box lower cover 42 and the arc-shaped mounting bracket 46 are integrated. The inner and outer sides of the junction box lower cover 42 are arc surfaces to match the lead frame 2 and the housing. There is a positioning tenon 43 on the inner arc surface, and the positioning tenon 43 is provided with a plane, which contacts the upper end surface of the winding hole of the lead frame 2 to form a first surface contact; the lower surface of the mounting bracket 46 is crimped to the outer edge of the upper surface of the outer stator 1. Specifically, the lower end of the mounting bracket 46 is provided with a plane, which contacts the upper end surface of the outer stator 1 to form a second surface contact. The upper and lower matching positioning of the two surface contacts (together forming an upper and lower clamping in opposite directions) can play a role in axial positioning, and effectively locate the position of the terminal block 4 on the outer stator 1.

[0065] See also Figures 3 to 7 As shown, the general structure of the heat-shrinkable motor applicable to this patent includes a stator core, lead wires, a lead frame 2, and windings, and an axial flow slot on the core. (The present invention is not limited to heat-shrinkable motors, but is also applicable to bolt-fixed motors.) The fixing state of the terminal fixing bracket of this patent is as shown in FIG. Figure 7 As shown, the lower end face of the mounting bracket is attached to the stator end face of the motor. When the positioning tenon 43 is buckled into the winding hole 21 on the lead frame 2, the integrated terminal bracket is fixed relative to the motor. By adjusting the corresponding tolerance, the positioning of the terminal bracket can be made more accurate, so as to achieve the purpose of accurately docking the terminal post.

[0066] The external stator terminal assembly of the present invention can effectively avoid the possibility of deflection, overturning, etc. of the terminal, and the positioning is more accurate, and the subsequent installation is more convenient and stable. The external stator terminal assembly avoids the risk of split installation buckle breakage, and can simplify assembly, improve installation efficiency, and reduce errors during installation. The lightweight design of the terminal makes its volume and mass smaller, and the outer side of the bracket can be flush with the outer side of the motor without affecting the size of the housing.

[0067] In summary, the external stator terminal assembly of the present invention can be unaffected by the fixing form of the motor, and can complete the relative fixation of the terminal bracket and the motor, avoiding the possibility of deflection, overturning, etc. of the terminal, with accurate positioning, convenient and stable installation, improved installation efficiency, and reduced errors generated during installation.

[0068] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An outer stator connection assembly, characterized in that: include: An external stator (1), the external stator (1) comprising a lead frame (2) and a tooth portion (6) for winding a lead, the lead frame (2) being provided with at least one winding hole (21); A wiring terminal (4) comprises a wiring box upper cover (41), a wiring box lower cover (42) and an arc-shaped mounting bracket (46), wherein the upper surface of the wiring box upper cover (41) is provided with a plurality of second wiring holes (45), the wiring box upper cover (41) and the wiring box lower cover (42) are matched to form a plurality of first wiring holes (44), the mounting bracket (46) is connected to the outer side of the wiring box lower cover (42) away from the rotation axis of the outer stator (1), the lower surface of the mounting bracket (46) is pressed against the outer edge of the upper surface of the outer stator (1), the mounting bracket (46) has a positioning tenon (43) protruding toward the rotation axis of the outer stator (1), and the positioning tenon (43) is engaged with the winding hole (21).

2. The outer stator terminal assembly according to claim 1, characterized in that: The junction box lower cover (42) and the mounting bracket (46) are integrally formed.

3. The outer stator terminal assembly according to claim 1, characterized in that: The lower surface of the mounting bracket (46) is pressed against the upper surface of the stator silicon steel sheet (5) at the outer periphery of the outer stator (1).

4. The outer stator terminal assembly according to claim 1, characterized in that: Each of the first wiring holes (44) is connected to a corresponding second wiring hole (45) through an independent channel.

5. The outer stator terminal assembly according to claim 1, characterized in that: The winding hole (21) is a pill hole, the upper edge and the lower edge of the pill hole are respectively flat edges, and the left edge and the right edge of the pill hole are respectively semicircular edges.

6. The outer stator terminal assembly according to claim 5, characterized in that: An inverted right triangle is formed on the positioning latch (43), and the base of the right triangle abuts against the flat edge of the upper edge of the inner circumference of the winding hole (21).

7. The outer stator terminal assembly according to claim 1, characterized in that: The junction box upper cover (41) and the junction box lower cover (42) are buckled together via a buckle.

8. The outer stator terminal assembly according to claim 1, characterized in that: A gap is formed between the lower cover (42) of the junction box and the upper surface of the lead frame (2).

9. The outer stator terminal assembly according to claim 1, characterized in that: A gap is formed between the lower cover (42) of the junction box and the upper surface of the tooth portion (6) of the outer stator (1).

10. The outer stator terminal assembly according to claim 1, characterized in that: A motor lead (3) for connecting leads is provided on the upper surface of the outer stator (1), and the motor lead (3) is connected to the first wiring hole (44) via a cable.

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