Wiring structure and wiring method for variable frequency motor

Abstract

The present invention belongs to the technical field of motors, and in particular to a wiring structure and a wiring method for a variable frequency motor; the present invention provides a wiring structure for a variable frequency motor, comprising: a motor body, the outer wall of which is provided with a wiring port; a power cord, the outer wall of which is symmetrically provided with two retractable lock tongues; a limiting ring groove is circumferentially provided on the outer wall of the power cord; a sealing ring is sleeved on the outer wall of the power cord and is located in the limiting ring groove; wherein the power cord is horizontally inserted into the wiring port until the lock tongue is limited by the inner wall of the wiring port; the sealing ring is squeezed and deformed by the inner wall of the wiring port, and the lower part of the sealing ring is inclined and detached from the limiting ring groove; the power cord is pulled upward obliquely to increase the gap between the bottom wall of the power cord and the inner bottom wall of the wiring port, and the lower part of the sealing ring gradually slides into the limiting ring groove; through the cooperation of the sealing ring, the power cord and the wiring port, the sealing effect of the power cord and the wiring port is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and specifically relates to conductive connections, and in particular to a wiring structure and a wiring method for variable frequency motors. Background Art

[0002] After the power cord is connected to the variable frequency motor, there will be a certain gap between the outer wall of the power cord and the wiring port; dust or powder in the working environment of the motor will enter the gap, resulting in increased contact resistance, poor contact or arcing. Therefore, during the wiring process, a sealing ring needs to be set on the outer wall of the power cord, and the sealing ring is inserted into the wiring port synchronously with the power cord. After the power cord is connected and fixed to the motor, the sealing ring seals the gap between the outer wall of the power cord and the wiring port.

[0003] In the related art, a sealing ring is often placed on the outer wall of a power cord, and the power cord drives the sealing ring to be inserted into the wiring port synchronously. During the insertion process, the sealing ring is not easy to be inserted into the wiring port synchronously with the power cord, resulting in the sealing ring sliding outward relative to the power cord and some parts not being sealed properly, affecting the sealing effect.

[0004] Therefore, how to prevent the sealing ring from tilting after being synchronously inserted into the inner wall of the connection port of the variable frequency motor along with the power cord is a technical problem that urgently needs to be solved in the field.

[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0006] The embodiments of the present disclosure at least provide a wiring structure for a variable frequency motor and a working method thereof.

[0007] In a first aspect, an embodiment of the present disclosure provides a wiring structure for a variable frequency motor, comprising:

[0008] The motor body has an outer wall provided with a wiring port;

[0009] The power cord has two retractable locking tongues symmetrically arranged on its outer wall;

[0010] The outer wall of the power cord is provided with a limiting ring groove in the circumferential direction;

[0011] A sealing ring, which is sleeved on the outer wall of the power cord and located in the limiting ring groove;

[0012] The power cord is inserted horizontally into the wiring port until the lock tongue is limited by the inner wall of the wiring port;

[0013] The sealing ring is squeezed and deformed by the inner wall of the wiring port, and the lower part of the sealing ring is tilted and separated from the limiting ring groove;

[0014] The power cord is pulled upward obliquely to increase the gap between the bottom wall of the power cord and the inner bottom wall of the wiring port, and the lower part of the sealing ring is elastically reset to slide into the limiting ring groove.

[0015] In an optional embodiment, two grooves are symmetrically formed on the inner wall of the wiring port, and one groove corresponds to one locking tongue;

[0016] The locking tongue comprises: a fixing post, which is arranged on the outer wall of the power line;

[0017] A telescopic sleeve, the lifting sleeve of which is arranged on the outer wall of the fixed column;

[0018] A return spring is sleeved on the outer wall of the fixed column, and one end of the return spring is fixed on the telescopic sleeve;

[0019] Wherein, the power line is horizontally inserted into the wiring port, and the reset spring is suitable for pushing the telescopic sleeve until the telescopic sleeve is inserted into the groove.

[0020] In an optional embodiment, a lower guide groove is formed at the lower portion of the outer wall of the power cord, and the lower guide groove extends along the axis of the power cord;

[0021] The sealing ring is squeezed and deformed by the inner wall of the wiring port, and the lower part of the sealing ring slides from the limiting ring groove into the lower guide groove.

[0022] In an optional embodiment, the lower guide groove is in an arc shape, and the groove depth of the lower guide groove gradually deepens from one side of the limiting ring groove to the other side;

[0023] When the power cord is pulled upward at an angle, the distance between the top wall of the lower guide groove and the inner bottom wall of the wiring port gradually increases, so that the sealing ring elastically contracts and resets itself in the limiting ring groove.

[0024] In an optional embodiment, an upper guide groove is provided on the upper portion of the outer wall of the power cord, and the upper guide groove extends along the axis of the power cord;

[0025] When the power cord is disassembled, the upper part of the sealing ring slides from the limiting ring groove into the upper guide groove.

[0026] In an optional embodiment, the upper guide groove is in an arc shape, and the groove depth of the upper guide groove gradually deepens from one side of the limiting ring groove to the other side;

[0027] When the power cord is pulled downward at an angle, the distance between the top wall of the upper guide groove and the inner bottom wall of the wiring port gradually increases, so that the sealing ring gradually slides from the limiting ring groove into the upper guide groove.

[0028] In an optional embodiment, the motor body has an outer wall provided with a wiring port;

[0029] The power cord has two retractable locking tongues symmetrically arranged on its outer wall;

[0030] The outer wall of the power line is provided with a limiting ring groove in the circumferential direction, and a lower guide groove is arranged on the side of the limiting ring groove away from the wiring port.

[0031] A sealing ring, which is sleeved on the outer wall of the power cord and located in the limiting ring groove;

[0032] The power cord is inserted horizontally into the wiring port until the lock tongue is limited by the inner wall of the wiring port;

[0033] The sealing ring is squeezed and deformed by the inner wall of the wiring port, and the lower part of the sealing ring slides from the limiting ring groove into the lower guide groove;

[0034] Pull the power cord upward obliquely to increase the gap between the bottom wall of the power cord and the inner bottom wall of the wiring port, and the lower part of the sealing ring slides from the lower guide groove into the limiting ring groove.

[0035] In an optional embodiment, two grooves are symmetrically formed on the inner wall of the wiring port, and one groove corresponds to one locking tongue;

[0036] The locking tongue comprises: a fixing post, which is arranged on the outer wall of the power line;

[0037] A telescopic sleeve, the lifting sleeve of which is arranged on the outer wall of the fixed column;

[0038] A return spring is sleeved on the outer wall of the fixed column, and one end of the return spring is fixed on the telescopic sleeve;

[0039] Wherein, the power line is horizontally inserted into the wiring port, and the reset spring is suitable for pushing the telescopic sleeve until the telescopic sleeve is inserted into the groove.

[0040] In an optional embodiment, the lower guide groove is in an arc shape, and the groove depth of the lower guide groove gradually deepens from one side of the limiting ring groove to the other side;

[0041] When the power cord is pulled upward at an angle, the distance between the top wall of the lower guide groove and the inner bottom wall of the wiring port gradually increases, so that the sealing ring elastically contracts and resets itself in the limiting ring groove.

[0042] In an optional embodiment, an upper guide groove is provided on the upper portion of the outer wall of the power cord, and the upper guide groove extends along the axis of the power cord;

[0043] When the power cord is disassembled, the upper part of the sealing ring slides from the limiting ring groove into the upper guide groove.

[0044] In an optional embodiment, the upper guide groove is in an arc shape, and the groove depth of the upper guide groove gradually deepens from one side of the limiting ring groove to the other side;

[0045] When the power cord is pulled downward obliquely, the distance between the top wall of the upper guide groove and the inner top wall of the wiring port gradually increases, so that the sealing ring gradually slides from the limiting ring groove into the upper guide groove.

[0046] In a second aspect, an embodiment of the present disclosure further provides a wiring method for a wiring structure, the wiring method comprising:

[0047] The power cord is inserted horizontally into the wiring port until the lock tongue is limited by the inner wall of the wiring port;

[0048] The sealing ring is squeezed and deformed by the inner wall of the wiring port, and the lower part of the sealing ring is tilted and separated from the limiting ring groove;

[0049] Pull the power cord upward at an angle to increase the gap between the bottom wall of the power cord and the inner bottom wall of the wiring port, and the lower part of the sealing ring gradually slides into the limiting ring groove.

[0050] The beneficial effects of the present invention are as follows: the present invention provides a wiring structure and wiring method for a variable frequency motor, and the sealing effect of the power cord and the wiring port is improved through the cooperation of the sealing ring, the power cord and the wiring port. When the power cord is inserted into the wiring break to connect the circuit, the sealing ring is squeezed and deformed and then detaches from the limit ring groove, and the sealing ring is in an inclined state at this time; and when the power cord is connected and fixed to the wiring port, the power cord is pulled upward at an angle to increase the gap between the bottom wall of the power cord and the inner bottom wall of the wiring port, and the lower part of the sealing ring gradually slides into the limit ring groove, thereby improving the sealing effect between the power cord and the wiring break.

[0051] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0052] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] 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.

[0054] Figure 1 A three-dimensional diagram of a wiring structure for a variable frequency motor provided in an embodiment of the present disclosure;

[0055] Figure 2 A schematic diagram of the unfolded state of the power cord and the connection break provided in the embodiment of the present disclosure;

[0056] Figure 3 A three-dimensional diagram of a power cord provided for an embodiment of the present disclosure;

[0057] Figure 4 A sectional front view of a power cord and a lock tongue provided in an embodiment of the present disclosure;

[0058] Figure 5 A schematic diagram of a state where a power cord provided in an embodiment of the present disclosure is not plugged into a wiring port;

[0059] Figure 6 A schematic diagram of a state in which a power cord is horizontally inserted into a wiring port in the prior art;

[0060] Figure 7 A schematic diagram of a power cord provided in an embodiment of the present disclosure being pulled upward.

[0061] In the figure:

[0062] 1. Motor body; 2. Wiring port; 3. Power cord; 31. Lower guide groove; 32. Upper guide groove; 4. Limit ring groove; 5. Sealing ring; 6. Lock tongue; 61. Fixed column; 62. Telescopic sleeve; 63. Reset spring; 7. Cable organizer. DETAILED DESCRIPTION

[0063] 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.

[0064] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0065] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0066] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0067] Research has found the following shortcomings of the prior art: during the wiring process, a sealing ring needs to be put on the outer wall of the power cord, and the sealing ring is inserted into the wiring port synchronously with the power cord. After the power cord is connected and fixed to the motor, the sealing ring seals the gap between the outer wall of the power cord and the wiring port.

[0068] In the related art, a sealing ring is often placed on the outer wall of a power cord, and the power cord drives the sealing ring to be inserted into the wiring port synchronously. During the insertion process, the sealing ring is not easy to be inserted into the wiring port synchronously with the power cord, resulting in the sealing ring sliding outward relative to the power cord and some parts not being sealed properly, affecting the sealing effect.

[0069] Therefore, how to prevent the sealing ring from tilting after being synchronously inserted into the inner wall of the connection port of the variable frequency motor along with the power cord is a technical problem that urgently needs to be solved in the field.

[0070] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0071] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0072] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0073] like Figures 1 to 7 As shown, at least one embodiment provides a wiring structure for a variable frequency motor, including: a motor body 1, whose outer wall is provided with a wiring port 2; the motor body 1 is a variable frequency motor, the lower end of the motor body 1 is connected to a gear box in a transmission manner, a rotating rod is sleeved on the output shaft of the gear box, and a lifting sleeve is sleeved on the outer wall of the rotating rod, which is suitable for driving the lifting sleeve to move vertically up and down when the rotating rod rotates. Further, a protective sleeve is fixed on the side wall of the gear box, the protective sleeve is sleeved on the outer wall of the lifting rod, the protective sleeve is adapted to the lifting rod, and the protective sleeve is suitable for preventing the lifting rod from rotating, that is, the lifting rod can only be lifted vertically relative to the protective sleeve.

[0074] Reference Figure 2 The power cord 3 has two retractable locking tongues 6 symmetrically arranged on its outer wall; a cable organizer 7 is fixed to the outer wall of the protective cover, and the power cord 3 is electrically connected to the motor body 1 after passing through the cable organizer 7.

[0075] Reference Figure 3 A limiting ring groove 4 is circumferentially provided on the outer wall of the power cord 3 ; the limiting ring groove 4 is arranged at the end of the power cord 3 , and the power cord 3 is inserted into the wiring port 2 , and the limiting ring groove 4 is simultaneously inserted into the wiring port 2 .

[0076] Reference Figure 5 , a sealing ring 5 is sleeved on the outer wall of the power cord 3 and is located in the limiting ring groove 4; when the power cord 3 is not inserted into the wiring port 2, the annular sealing ring 5 is arranged concentrically with the power cord 3.

[0077] Reference Figure 6 The power cord 3 is horizontally inserted into the wiring port 2 until the lock tongue 6 is limited by the inner wall of the wiring port 2; the sealing ring 5 is squeezed and deformed by the inner wall of the wiring port 2, and the lower part of the sealing ring 5 is inclined and detached from the limiting ring groove 4.

[0078] Reference Figure 7, pull the power cord 3 upward at an angle to increase the gap between the bottom wall of the power cord 3 and the inner bottom wall of the wiring port 2, and the lower part of the sealing ring 5 gradually slides into the limiting ring groove 4. The cooperation of the sealing ring 5, the power cord 3 and the wiring port 2 improves the sealing effect of the power cord 3 and the wiring port 2. When the power cord 3 is inserted into the wiring break to connect the circuit, the sealing ring 5 is squeezed and deformed and then detached from the limiting ring groove 4. At this time, the sealing ring 5 is in an inclined state; and when the power cord 3 is connected and fixed to the wiring port 2, pull the power cord 3 upward at an angle to increase the gap between the bottom wall of the power cord 3 and the inner bottom wall of the wiring port 2, and the lower part of the sealing ring 5 gradually slides into the limiting ring groove 4, which improves the sealing effect between the power cord 3 and the wiring break.

[0079] Reference Figure 4 The inner wall of the wiring port 2 is symmetrically provided with two grooves, one groove corresponding to one locking tongue 6; when the power cord 3 is inserted into the wiring port 2, the locking tongue 6 is limited by the inner wall of the wiring port 2 and retracts toward the power cord 3, until the locking tongue 6 moves to the groove, and the return spring 63 pushes the telescopic sleeve 62 to move upward to be inserted into the groove, thereby preventing the power cord 3 from detaching from the wiring port 2. At this time, the power cord 3 is electrically connected to the motor body 1.

[0080] Continue to refer to the attached Figure 4 The locking tongue 6 includes: a fixing column 61, which is arranged on the outer wall of the power cord 3; the fixing column 61 is arranged radially along the power cord 3, and the two fixing columns 61 are symmetrically arranged, and the outer end of the fixing column 61 slightly protrudes from the outer wall of the power cord 3 so that the power cord 3 can be inserted into the wiring port 2.

[0081] Continue to refer to the attached Figure 4 , a telescopic sleeve 62, wherein the lifting sleeve is arranged on the outer wall of the fixed column 61; the interior of the telescopic sleeve 62 is hollow.

[0082] Continue to refer to the attached Figure 4 , a return spring 63 is sleeved on the outer wall of the fixed column 61 and one end of the return spring 63 is fixed on the telescopic sleeve 62.

[0083] Reference Figure 5 When the power cord 3 is connected and fixed to the wiring port 2, the power cord 3 is horizontally inserted into the wiring port 2, and the telescopic sleeve 62 is squeezed by the inner wall of the wiring port 2 to shrink toward the axial direction of the power cord 3 until the telescopic sleeve 62 moves to the groove. The return spring 63 is suitable for pushing the telescopic sleeve 62 until the telescopic sleeve 62 is inserted into the groove. The outer wall of the telescopic sleeve 62 abuts against the inner wall of the groove to prevent the power cord 3 from escaping from the wiring port 2.

[0084] Reference Figure 3, a lower guide groove 31 is provided at the lower part of the outer wall of the power cord 3, and the lower guide groove 31 extends along the axis of the power cord 3; wherein the sealing ring 5 is squeezed and deformed by the inner wall of the wiring port 2, and the lower part of the sealing ring 5 slides from the limiting ring groove 4 into the lower guide groove 31. At this time, the sealing ring 5 changes from being concentric with the power cord 3 to being inclined relative to the power cord 3. For details, please refer to the attached Figure 6 The sealing ring 5 in the tilted state has a poor sealing effect between the outer wall of the power cord 3 and the inner wall of the connection port 2 due to the stretching deformation of its lower part. When the power cord 3 is inserted into the connection port 2 and the sealing ring 5 remains in the tilted state for a long time, the sealing effect will be poor. Figure 7 After the power cord 3 is inserted into the wiring port 2, the power cord 3 is pulled upward at an angle, and the distance between the bottom of the power cord 3 and the inner bottom wall of the wiring port 2 increases, and the sealing ring 5 gradually resets from the inclined state to a state perpendicular to the axis of the power cord 3.

[0085] Reference Figure 3 and Figure 6 The lower guide groove 31 is in an arc shape, and the groove depth of the lower guide groove 31 gradually deepens from one side of the limiting ring groove 4 to the other side; refer to the attached Figure 7 When the power cord 3 is pulled upward at an angle, the distance between the bottom of the power cord 3 and the inner bottom wall of the wiring port 2 increases, that is, the distance between the top wall of the lower guide groove 31 and the inner bottom wall of the wiring port 2 increases, and the activity space of the sealing ring 5 increases. The sealing ring 5 is reset and contracted under the action of its own elastic force, that is, the sealing ring 5 is gradually reset from the inclined state to the state of being concentric with the power cord 3, so that the sealing ring 5 is elastically contracted and reset to the limiting ring groove 4.

[0086] Continue to refer to the attached Figure 3 , an upper guide groove 32 is provided on the upper part of the outer wall of the power cord 3, and the upper guide groove 32 extends along the axis of the power cord 3; wherein, when the power cord 3 is disassembled, the upper part of the sealing ring 5 slides from the limiting ring groove 4 into the upper guide groove 32. The upper guide groove 32 is in an arc shape, and the groove depth of the upper guide groove 32 gradually deepens from one side of the limiting ring groove 4 to the other side; when the power cord 3 needs to be disassembled, the power cord 3 is pulled downward obliquely, and the top wall of the upper guide groove 32 gradually moves away from the inner bottom wall of the wiring port 2. When the power cord 3 is pulled outward, the locking tongue 6 is disengaged from the groove. As the power cord 3 continues to move outward, the upper part of the sealing ring 5 is suitable for sliding from the limiting ring groove 4 to the upper guide groove 32, so that the power cord 3 can be disengaged from the wiring port 2.

[0087] Reference Figure 1At least one embodiment provides a wiring structure for a variable frequency motor, comprising: a motor body 1, whose outer wall is provided with a wiring port 2; a power cord 3, whose outer wall is symmetrically provided with two retractable lock tongues 6; a limiting ring groove 4 is circumferentially provided on the outer wall of the power cord 3, and a lower guide groove 31 is arranged on the side of the limiting ring groove 4 away from the wiring port 2, and a sealing ring 5 is sleeved on the outer wall of the power cord 3 and is located in the limiting ring groove 4; wherein the power cord 3 is horizontally inserted into the wiring port 2 until the lock tongue 6 is limited by the inner wall of the wiring port 2; the sealing ring 5 is squeezed and deformed by the inner wall of the wiring port 2, and the lower part of the sealing ring 5 slides from the limiting ring groove 4 into the lower guide groove 31; the power cord 3 is pulled upward obliquely to increase the gap between the bottom wall of the power cord 3 and the inner bottom wall of the wiring port 2, and the lower part of the sealing ring 5 slides from the lower guide groove 31 into the limiting ring groove 4.

[0088] At least one embodiment provides a wiring method for a wiring structure, the wiring method comprising: the power cord 3 is horizontally inserted into the wiring port 2 until the lock tongue 6 is limited by the inner wall of the wiring port 2; the sealing ring 5 is squeezed and deformed by the inner wall of the wiring port 2, and the lower part of the sealing ring 5 is tilted and detached from the limiting ring groove 4; the power cord 3 is pulled upward at an angle to increase the gap between the bottom wall of the power cord 3 and the inner bottom wall of the wiring port 2, and the lower part of the sealing ring 5 gradually slides into the limiting ring groove 4.

[0089] To sum up, the power cord 3 is horizontally inserted into the wiring port 2 until the lock tongue 6 is limited by the groove, and the power cord 3 is pulled upward to increase the distance between the bottom of the power cord 3 and the inner bottom wall of the wiring port 2, that is, the distance between the top wall of the lower guide groove 31 and the inner bottom wall of the wiring port 2 is increased, and the activity space of the sealing ring 5 is increased. The sealing ring 5 is reset and contracted under the action of its own elastic force, that is, the sealing ring 5 is gradually reset from the inclined state to the state of the concentric circle with the power cord 3, so that the sealing ring 5 elastically shrinks and resets to the limiting ring groove 4.

[0090] 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.

[0091] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is 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 a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0092] 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 wiring structure for a variable frequency motor, characterized in that: include: A motor body (1) has an outer wall provided with a wiring port (2); A power cord (3) having two retractable locking tongues (6) symmetrically arranged on its outer wall; The outer wall of the power cord (3) is provided with a limiting ring groove (4) in the circumferential direction; A sealing ring (5) is sleeved on the outer wall of the power cord (3) and is located in the limiting ring groove (4); The power cord (3) is horizontally inserted into the wiring port (2) until the lock tongue (6) is limited by the inner wall of the wiring port (2); The sealing ring (5) is squeezed and deformed by the inner wall of the wiring port (2), and the lower part of the sealing ring (5) is separated from the limiting ring groove (4); The power cord (3) is pulled upward at an angle, so that the gap between the bottom wall of the power cord (3) and the inner bottom wall of the wiring port (2) increases, and the lower part of the sealing ring (5) is elastically reset to slide into the limiting ring groove (4); The inner wall of the wiring port (2) is symmetrically provided with two grooves, one groove corresponding to one locking tongue (6); The locking tongue (6) comprises: a fixing column (61) which is arranged on the outer wall of the power cord (3); A telescopic sleeve (62), wherein the telescopic sleeve is arranged on the outer wall of the fixed column (61); A return spring (63), which is sleeved on the outer wall of the fixed column (61) and has one end fixed on the telescopic sleeve (62); The power cord (3) is horizontally inserted into the wiring port (2), and the return spring (63) is suitable for pushing the telescopic sleeve (62) into the insertion groove.

2. The wiring structure for a variable frequency motor according to claim 1, characterized in that: A lower guide groove (31) is provided at the lower portion of the outer wall of the power cord (3), and the lower guide groove (31) extends along the axis of the power cord (3); The sealing ring (5) is squeezed and deformed by the inner wall of the wiring port (2), and the lower part of the sealing ring (5) slides from the limiting ring groove (4) into the lower guide groove (31).

3. The wiring structure for a variable frequency motor according to claim 2, characterized in that: The lower guide groove (31) is in an arc shape, and the groove depth of the lower guide groove (31) gradually increases from one side of the limiting ring groove (4) to the other side; When the power cord (3) is pulled upward at an angle, the distance between the top wall of the lower guide groove (31) and the inner bottom wall of the wiring port (2) gradually increases, so that the sealing ring (5) elastically contracts and returns to its original position in the limiting ring groove (4).

4. The wiring structure for a variable frequency motor according to claim 1, characterized in that: An upper guide groove (32) is provided on the upper portion of the outer wall of the power cord (3), and the upper guide groove (32) extends along the axis of the power cord (3); When the power cord (3) is disassembled, the upper portion of the sealing ring (5) slides from the limiting ring groove (4) into the upper guide groove (32).

5. The wiring structure for a variable frequency motor according to claim 4, characterized in that: The upper guide groove (32) is in an arc shape, and the groove depth of the upper guide groove (32) gradually increases from one side of the limiting ring groove (4) to the other side; When the power cord (3) is pulled downward at an angle, the distance between the top wall of the upper guide groove (32) and the inner top wall of the wiring port (2) increases, so that the sealing ring (5) slides from the limiting ring groove (4) into the upper guide groove (32).

6. A wiring method for a wiring structure, characterized in that: Using the variable frequency motor wiring structure according to any one of claims 1 to 5, the wiring method includes: The power cord (3) is horizontally inserted into the wiring port (2) until the locking tongue (6) is limited by the inner wall of the wiring port (2); The sealing ring (5) is squeezed and deformed by the inner wall of the wiring port (2), and the lower part of the sealing ring (5) is inclined and separated from the limiting ring groove (4); The power cord (3) is pulled upward at an angle to increase the gap between the bottom wall of the power cord (3) and the inner bottom wall of the wiring port (2), and the lower part of the sealing ring (5) gradually slides into the limiting ring groove (4).

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