Closed protection structure for compressor binding post

Abstract

The utility model discloses a closed protection structure for a compressor binding post, relates to the technical field of compressors, and particularly relates to the closed protection structure for the compressor binding post. The protective cover is of a circular plate-shaped structure formed by stamping, and a circular groove is formed in the inner side of the protective cover; three binding post through holes are concentrically and uniformly processed in the circular groove; a soldering lug through hole is formed in each binding post through hole; after a binding post body assembled on the binding post flange cover and a soldering lug at the front end of the binding post body penetrate through the binding post through hole and the soldering lug through hole, an opening part of the binding post flange cover is buckled in the circular groove to be assembled in a matched manner; an insulating material is injected between the protective cover and the binding post flange cover. According to the technical scheme, the problems that in the prior art, a compressor motor is burnt out due to short circuit caused by the fact that an inner side body of a binding post in a compressor is exposed in the compressor and metal impurities are adsorbed to the inner side of the binding post of the compressor due to abrasion or assembly are solved.

Description

Technical Field

[0001] This utility model relates to a sealed protection structure for compressor terminals, and more particularly to a sealed protection structure for compressor terminals. Background Technology

[0002] The compressor terminals are a crucial component of the compressor's electrical system, but also a weak point within it. This is because the inner side of the terminal is exposed to the compressor's environment, which is complex and filled with impurities such as refrigerant oil, refrigerant, and metal shavings. Metallic impurities, caused by wear or assembly defects, can easily adhere to the inside of the compressor terminals, potentially causing a short circuit and burning out the compressor motor.

[0003] To prevent impurities from adhering, a structure needs to be designed to provide a sealed protection for this area, isolating the inside of the compressor terminal from the internal environment of the compressor. Simultaneously, for mass production purposes, this structure must be simple to install, have low manufacturing costs, and ensure that no chemical changes occur within the compressor's internal environment.

[0004] Traditional terminal blocks with internal protection are expensive and not suitable for mass production. Current solutions, after considering factors such as cost, installation tolerance, structural complexity, and material durability, fail to achieve satisfactory results. A truly effective airtight protection structure needs to completely cover the outer circumference of the terminal block flange to prevent impurities from adsorbing, while ensuring the materials are compatible with the compressor's internal environment and do not generate excessive noise or vibration. This ensures maximum airtight protection without affecting the compressor's normal operation.

[0005] In view of the problems existing in the prior art, it is necessary to study and design a new type of sealed protection structure for compressor terminals to overcome the problems existing in the prior art. Summary of the Invention

[0006] The existing technology provides a sealed protection structure for compressor terminals, addressing the problem that the inner body of the compressor terminals is exposed inside the compressor, and that metal impurities are adsorbed on the inner side of the compressor terminals due to wear or assembly, causing short circuits and burning out the compressor motor.

[0007] One objective of this invention is to provide a sealed protection system for compressor terminals, which can effectively reduce the risk of compressor burnout due to short circuits caused by impurities accumulating at the terminals.

[0008] The technical means adopted in this utility model are as follows:

[0009] A hermetically sealed protective structure for compressor terminals includes: a terminal flange cover and a protective cover; the terminal flange cover and the protective cover work together with the terminal body, welding tabs and terminals to achieve tight contact and reduce vibration of the structure;

[0010] Furthermore, the protective cover is a circular plate structure made of insulating material with a heat resistance index of over 135℃, which can effectively cover the inside of the terminal block to prevent impurities in the environment from entering, while increasing the insulation distance at this location and greatly improving the electrical safety of the main parts of the compressor.

[0011] Furthermore, the stamping design is to prevent the solder pads from tearing during the stamping process, by adding rounded corners to both ends of the protective cover solder pads. The rounded corner design can meet the size design of the stamping die without interfering with the size fit of the entire sealing structure, eliminating the risk of tearing of the insulation material caused by stamping, and ensuring the reliability of the protective cover's release force through size fit.

[0012] Furthermore, to ensure the yield of the insulating material during processing and to prevent impurities from entering the rounded corners, the rounded corner size ranges from 1 / 25 to 1 / 30 of the outer diameter of the protective cover, and the number of rounded corners can be 1 or 2 times the number of solder pads.

[0013] Furthermore, a circular groove is machined on the inner side of the protective cover;

[0014] Furthermore, three terminal through holes are concentrically and evenly distributed within the circular groove;

[0015] Furthermore, each terminal block through hole is also machined with a solder pad through hole;

[0016] Furthermore, after the terminal body and the welding tab at its front end, which are mounted on the terminal flange cover, pass through the terminal through hole and the welding tab through hole, the opening of the terminal flange cover is fastened into the circular groove for assembly.

[0017] Furthermore, the protective cover and the terminal block are fitted with a specific clearance fit and a partial interference fit to ensure a pull-out force of not less than 20N; the terminal block and the terminal post are fitted with an interference fit to ensure a pull-out force of not less than 25N; the terminal block and the protective cover do not contact each other, or the thickness of the protective cover is increased to create an interference fit with the terminal block. Increasing the thickness can be achieved by increasing the thickness of a single piece or by stacking multiple pieces.

[0018] Furthermore, the terminal block is encapsulated with an internal glass body or a combination of glass body and ceramic ring. A rectangular solder pad is welded onto the terminal block, and the bottom of the solder pad has a protruding part that is significantly wider than the width of the solder pad, which is used to fit and lock onto the through hole of the solder pad.

[0019] Furthermore, insulating material is injected or edge sealing is applied between the protective cover and the terminal flange cover.

[0020] Furthermore, the insulating material includes polymers or composites of one or more of polyimide, polyethylene terephthalate, aromatic polyamide, polyethylene naphthalate, and polytetrafluoroethylene, or through bonding processes.

[0021] Furthermore, the noise generated by this sealed protective structure does not exceed 40dB in an environment with high refrigerant flow rates.

[0022] Furthermore, the clearance between the circular groove and the flange cover opening of the terminal block is less than 1mm.

[0023] Furthermore, the through-hole of the welding piece is an elongated through-hole with rounded corners at both ends. The rounded corners serve the following purposes: 1. To allow for assembly movement; 2. To prevent tearing during processing; 3. To allow for air venting during adhesive injection.

[0024] Furthermore, the edge of the protective cover is provided with 1-2 positioning protrusions to distinguish the orientation of the three welding pieces. This ensures the accuracy of the structure during assembly. The number of markings can be one, used to identify the front and back of the protective cover based on the relative positions of the column and the welding pieces; alternatively, there can be two markings of different shapes, simultaneously distinguishing the orientation of the welding pieces and the front and back of the protective cover.

[0025] Furthermore, the positioning protrusions used to distinguish the direction markings are in the shape of an arc or other shapes with rounded corners to avoid cutting the operator; the positioning protrusions can be designed as raised or recessed arc shapes or other shapes with rounded corners according to the difference between the outer diameter of the protective cover and the outer diameter of the flange cover.

[0026] Furthermore, the outer diameter of the protective cover is designed according to the different outer diameters of the terminal flange cover;

[0027] Furthermore, when the outer diameter of the terminal flange cover is less than 37.59 mm, the outer diameter of the corresponding protective cover design is +1-2 mm of the outer diameter of the terminal flange cover;

[0028] Furthermore, when the outer diameter of the terminal flange cover is between 37.59mm and 48.77mm, the corresponding outer diameter of the protective cover design is +2 to -4mm of the outer diameter of the terminal flange cover.

[0029] Furthermore, when the outer diameter of the terminal flange cover is greater than 48.77 mm, the outer diameter of the corresponding protective cover design is +4-5 mm of the outer diameter of the terminal flange cover.

[0030] Furthermore, the thickness of the protective cover is between 0.1mm and 0.75mm. Its thickness can be the thickness of a single material or the sum of the thicknesses of one or more materials. For models with a compressor housing inner diameter less than 150mm, a multi-layer or composite method using single or multiple materials is used; for models with a compressor housing inner diameter greater than or equal to 150mm, a single-layer method using a single material is used.

[0031] Furthermore, this sealed protective structure is compatible with all operating conditions inside the refrigeration compressor.

[0032] Furthermore, the compressor's interior contains a corrosive environment of refrigeration oil and refrigerant, and is subject to high temperature and high pressure conditions, with a compressor speed range of 0-140 rpm.

[0033] Furthermore, the refrigerant includes fluorocarbons, hydrocarbons, and carbon oxides such as R407C, R744, and R32.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] This invention presents a sealed protection structure for compressor terminals. Through the tight contact and fit of the terminal body, terminal flange cover, fins, protective cover, and terminals, a complete sealed protection structure is formed. This ensures the compressor terminal remains sealed, effectively isolating it from the compressor cavity environment, preventing impurity adsorption, and increasing creepage distance. Simultaneously, the use of high-insulation-grade materials significantly improves service life and durability. Furthermore, by utilizing tolerances and structural characteristics, this sealed protection structure maintains low vibration and noise levels even under high refrigerant flow conditions. Traditional terminals with internal protection are expensive and not suitable for mass production. In contrast, the sealed protection structure for compressor terminals proposed in this invention is low-cost, easy to install, robust, and highly durable. Therefore, this sealed protection structure for compressor terminals effectively solves the problem of poor compressor insulation at minimal cost, fundamentally eliminating electrical safety hazards such as short circuits caused by impurities adsorbed on the terminals, improving product reliability, and minimizing abnormal vibration and noise in the compressor.

[0036] In summary, the technical solution of this utility model solves the problem in the prior art where the inner side of the compressor's internal terminals is exposed inside the compressor, and metal impurities are adsorbed on the inner side of the compressor terminals due to wear or assembly, causing a short circuit and ultimately burning out the compressor motor. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the assembly structure of this utility model;

[0039] Figure 2 This is a front view of the protective cover of this utility model;

[0040] Figure 3 This is a rear view of the protective cover of this utility model;

[0041] Figure 4 This is a schematic diagram of the sealed protective structure of this utility model assembled on the compressor;

[0042] Figure 5 This is a flowchart of the process method for the sealed protective structure of this utility model.

[0043] In the diagram: 1. Terminal flange cover; 2. Terminal body; 3. Welding plate; 4. Terminal; 5. Protective cover; 51. Circular groove; 52. Terminal through hole; 53. Welding plate through hole; 54. Positioning protrusion. Detailed Implementation

[0044] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0048] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0049] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0050] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0051] As shown in the figure, this utility model provides a sealed protection structure for compressor terminals, including: a terminal flange cover 1 and a protective cover 5; the protective cover 5 is a circular plate structure formed by stamping, with a circular groove 51 machined on its inner side; three terminal through holes 52 are concentrically and evenly machined in the circular groove 51; each terminal through hole 52 is also machined with a welding plate through hole 53; after the terminal body 1 and the welding plate 3 at its front end are mounted on the terminal flange cover 1, they pass through the terminal through hole 52 and the welding plate through hole 53, and the opening of the terminal flange cover 1 is fastened into the circular groove 51 for assembly; insulating material is injected between the protective cover 5 and the terminal flange cover 1 or edge sealing is performed.

[0052] The clearance between the circular groove 51 and the opening of the terminal flange cover 1 is less than 1mm.

[0053] The through hole 53 of the welding sheet is an elongated through hole with rounded corners at both ends. The rounded corners serve the following purposes: 1. To allow for assembly movement; 2. To prevent tearing during processing; 3. To allow for air venting during adhesive injection.

[0054] The edge of the protective cover 5 is provided with 1-2 positioning protrusions 54 to distinguish the orientation of the three welding pieces 3.

[0055] The outer diameter of the protective cover 5 is designed according to the outer diameter of the terminal flange cover 1. When the outer diameter of the terminal flange cover 1 is less than 37.59mm, the outer diameter of the protective cover 5 is +1-2mm of the outer diameter of the terminal flange cover 1. When the outer diameter of the terminal flange cover 1 is between 37.59mm and 48.77mm, the outer diameter of the protective cover 5 is +2-4mm of the outer diameter of the terminal flange cover 1. When the outer diameter of the terminal flange cover 1 is greater than 48.77mm, the outer diameter of the protective cover 5 is +4-5mm of the outer diameter of the terminal flange cover 1.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sealed protection structure for compressor terminals, characterized in that: The sealed protection structure for the compressor terminal block includes: a terminal block flange cover (1) and a protective cover (5); The protective cover (5) is a circular plate structure formed by stamping, and a circular groove (51) is machined on its inner side; The circular groove (51) is provided with three concentric through holes (52) for wiring posts. Each of the aforementioned terminal through holes (52) is also machined with a solder pad through hole (53); After the terminal body (2) and the welding plate (3) at its front end are mounted on the terminal flange cover (1), they pass through the terminal through hole (52) and the welding plate through hole (53), and the opening of the terminal flange cover (1) is fastened in the circular groove (51) for assembly. Insulating material is injected or edge sealing is applied between the protective cover (5) and the terminal flange cover (1).

2. The hermetic protection structure for compressor terminals according to claim 1, characterized in that: The gap between the circular groove (51) and the opening of the terminal flange cover (1) is less than 1 mm.

3. The hermetic protection structure for compressor terminals according to claim 1, characterized in that: The welding sheet through hole (53) is an elongated through hole with rounded corners at both ends.

4. The hermetically sealed protection structure for compressor terminals according to claim 1, characterized in that: The protective cover (5) has 1-2 positioning protrusions (54) on its edge to distinguish the orientation of the three welding pieces (3).

5. The hermetic protection structure for compressor terminals according to claim 1, characterized in that: The outer diameter of the protective cover (5) is designed according to the different outer diameters of the terminal flange cover (1); When the outer diameter of the terminal flange cover (1) is less than 37.59 mm, the outer diameter of the corresponding protective cover (5) is designed to be +1-2 mm of the outer diameter of the terminal flange cover (1); When the outer diameter of the terminal flange cover (1) is between 37.59mm and 48.77mm, the outer diameter of the corresponding protective cover (5) is +2 to -4mm of the outer diameter of the terminal flange cover (1). When the outer diameter of the terminal flange cover (1) is greater than 48.77 mm, the outer diameter of the corresponding protective cover (5) is designed to be +4-5 mm of the outer diameter of the terminal flange cover (1).

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