Wire connector, junction box assembly and motor

Abstract

The invention provides a wire connector, a junction box assembly and a motor, the junction box is provided with a wire passing hole, the wire connector comprises a connecting main body, the connecting main body is provided with a wire inlet hole and at least two mutually insulated wiring parts, the two wiring parts comprise a power supply wiring part and a ground wire wiring part, and the power supply wiring part and the ground wire wiring part are arranged in the connecting main body. The power supply wiring part comprises a power supply wire inlet end and a power supply wire outlet end; the ground wire wiring part comprises a ground wire inlet structure and a ground wire outlet structure; a power line inlet end and the ground line inlet structure are both led to the line inlet hole, the connecting main body further comprises a connecting pipe, the first end of the connecting pipe is communicated with the line inlet hole in a sealed mode, and the second end of the connecting pipe is connected with the line passing hole in a sealed mode, so that the protection level of the motor can be ensured, and the connecting technology of the power line and the ground line is simplified.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a wire connector, a junction box assembly and a motor. Background Art

[0002] In the prior art, such as Figure 12-17 As shown in the figure, the connection between the motor and the power supply is usually made by a lead-type connector. At the same time, to ensure the safety of electricity use, all motors are equipped with a grounding device. The grounding device uses a lead wire (such as Fig.13 The grounding lead is also led out through the waterproof connector. Because it is also a cylinder like the power connector, when the power line and the ground line pass through the waterproof connector at the same time, there is still a gap at the line after the waterproof connector is locked, such as Fig.14 and Fig.15 As shown, gluing is required to ensure the motor protection level, which makes the motor manufacturing process complicated, time-consuming, and increases the motor production cost and material cost. Fig.16 As shown, when the power line and the ground line pass through the junction box separately, there are many processes and the protection performance is insufficient.

[0003] How to ensure the protection level of the motor while simplifying the connection process of the power cord and the ground wire is a technical problem that needs to be solved urgently. Summary of the invention

[0004] Therefore, the present invention provides a wire connector, a junction box assembly and a motor, which can not only ensure the protection level of the motor, but also simplify the connection process of the power line and the ground line.

[0005] A wire connector provided by the present invention is connected to a junction box of a motor, wherein the junction box is provided with a wire through hole, and the wire connector comprises a connection body, wherein the connection body is provided with a wire inlet hole and at least two mutually insulated wiring parts, wherein the two wiring parts comprise a power wiring part and a ground wiring part, wherein the power wiring part comprises a power inlet terminal and a power outlet terminal, and wherein the ground wiring part comprises a ground inlet structure and a ground outlet structure;

[0006] The power line inlet terminal and the ground line inlet structure both lead to the inlet hole. The connection body also includes a connecting tube, a first end of the connecting tube is sealed and connected to the inlet hole, and a second end of the connecting tube is sealed and connected to the wire hole.

[0007] In some embodiments, a waterproof joint is provided at the second end of the connecting pipe, and the second end of the connecting pipe is connected to the junction box via the waterproof joint.

[0008] In some embodiments, the ground wire connection part includes a conductor block, the ground wire input structure includes a first hole arranged on the conductor block, and the ground wire output structure includes a second hole arranged on the conductor block, the second hole is a threaded hole, and a bolt is arranged in the threaded hole.

[0009] The invention also provides a junction box assembly, comprising a junction box and the wire connector.

[0010] The present invention also provides a motor, comprising a casing, a power cord, a ground wire and the junction box assembly, wherein the junction box is arranged on the casing, and the outlet end of the power cord passes through the junction box, the wire hole, and the wire inlet hole in sequence and is electrically connected to the power inlet end; the ground wire comprises a ground wire inlet section and a ground wire outlet section, and the outlet end of the ground wire inlet section passes through the junction box, the wire hole, and the wire inlet hole in sequence and is electrically connected to the ground wire inlet structure, and the inlet end of the ground wire outlet section is electrically connected to the ground wire outlet structure.

[0011] In some embodiments, when the ground wire connection portion includes a conductor block, and the conductor block includes a first hole and a second hole, the outlet end of the ground wire inlet section is inserted into the first hole and electrically connected to the conductor block, and the outlet end of the ground wire inlet section is electrically connected to the conductor block via the second hole.

[0012] In some embodiments, when the second hole is a threaded hole and is provided with a bolt, the inlet end of the ground wire outlet section includes a terminal, and the bolt is sealedly connected to the second hole thread and presses the terminal onto the conductor block.

[0013] In some embodiments, the second hole is a blind hole.

[0014] In some embodiments, the second hole is interconnected with the first hole, the bolt includes a nut and a threaded rod, the nut squeezes the terminal, and the threaded rod squeezes the outlet end of the ground wire inlet section.

[0015] In some embodiments, the threaded rod includes a threaded segment, an end surface of the threaded segment is provided with a blind hole, a guide rod is inserted into the blind hole, and an elastic member is provided between the guide rod and the bottom surface of the blind hole.

[0016] The inlet end of the power line and the inlet end of the ground line of the present invention both lead to the inlet hole, and a connecting tube is provided at the inlet hole, which makes it possible for the wire connector to be sealed and connected only by the connecting tube. The outer periphery of the wire hole and the connecting tube are both round, which is convenient for sealing. The sealing requirement can be met without gluing, thereby improving the sealing performance of the junction box, simplifying the production process, and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 It is a schematic diagram of a wire connector provided with a power line and a ground line entry section in an embodiment of the present invention;

[0019] Figure 2 The embodiment of the present invention Figure 1 A top view of

[0020] Figure 3 The embodiment of the present invention Figure 1 When the ground wire is provided, it is integrated;

[0021] Figure 4 is a cross-sectional view of a wire connector provided with a power line, a ground line inlet section, and a ground line outlet section according to an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the conductor block structure of an embodiment of the present invention;

[0023] Figure 6 is a schematic diagram of a first hole and a second hole in an embodiment of the present invention being connected;

[0024] Figure 7 It is a schematic diagram of the guide rod squeezing the ground wire into the section when the guide rod and the elastic member are provided in the embodiment of the present invention;

[0025] Figure 8 The embodiment of the present invention Figure 7 Enlarged view of point A in the middle;

[0026] Fig. 9 is a schematic diagram of a waterproof joint according to an embodiment of the present invention when a connecting pipe is passed through;

[0027] Fig.10 is a first schematic diagram of a motor provided with a junction box according to an embodiment of the present invention;

[0028] Fig.11 is a second schematic diagram of a motor provided with a junction box according to an embodiment of the present invention;

[0029] Fig.12 It is a schematic diagram of the appearance of a wire connector in the prior art;

[0030] Fig.13 It is a schematic diagram of ground wire in the prior art;

[0031] Fig.14 It is a schematic diagram of the prior art in which the ground wire and the power wire pass through the waterproof connector at the same time;

[0032] Fig.15 yes Fig.14 A top sectional view of

[0033] Fig.16 It is a schematic diagram of a motor in the prior art when the ground wire and the power wire pass through the junction box respectively;

[0034] Fig.17 It is a schematic diagram of a motor when a ground wire and a power wire pass through a waterproof connector at the same time in the prior art.

[0035] The accompanying drawings are marked as follows:

[0036] 1. Connecting body; 101. Wire entry hole; 2. Junction box; 3. Wire passing hole; 4. Connecting tube; 5. Conductor block; 501. First hole; 502. Second hole; 6. Waterproof joint; 7. Bolt; 701. Nut; 702. Threaded rod; 703. Guide rod; 704. Elastic part; 8. Power cord; 901. Ground wire entry section; 902. Ground wire exit section. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0038] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0039] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0040] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0041] The present invention provides a wire connector, a junction box assembly and a motor, which can ensure the protection level of the motor and simplify the connection process of a power line and a ground line.

[0042] See also Figure 1-11 As shown, according to an embodiment of the present invention, a wire connector provided by the present invention is connected to a terminal box 2 of a motor, the terminal box 2 is provided with a wire through hole 3, the wire connector comprises a connection body 1, the connection body 1 is provided with a wire inlet hole 101, at least two mutually insulated wiring parts, the two wiring parts comprise a power wiring part and a ground wiring part, the power wiring part comprises a power inlet terminal and a power outlet terminal, the ground wiring part comprises a ground inlet structure and a ground outlet structure;

[0043] The power line inlet terminal and the ground line inlet structure both lead to the inlet hole 101 , and the connection body 1 also includes a connecting tube 4 , a first end of the connecting tube 4 is sealed and connected to the inlet hole 101 , and a second end of the connecting tube 4 is sealed and connected to the wire hole 3 .

[0044] In the prior art, the power line and the ground line pass through the wire hole at the same time, and the two lines need to be sealed and connected to the wire hole at the same time. When the two lines are taken as a whole, the outer peripheral surface is not a circular hole, while the wire hole is a circular hole, which needs to be sealed with glue. The present application sets a hole on the connecting body 1, and the power line inlet end and the ground line inlet end both lead to the wire inlet hole 101, and the wire inlet hole 101 is provided with a connecting tube 4, which makes it possible for the wire connector to be sealed only with the connecting tube 4. The outer periphery of the wire hole 3 and the connecting tube 4 are both round, which is convenient for sealing. The sealing requirements can be met without gluing, which improves the sealing performance of the junction box 2, simplifies the production process, and saves costs. The connecting tube 4 is an insulating hose, and the insulating material can be a polyvinyl chloride mixture.

[0045] Preferably, Fig.11 As shown, the second end of the connecting pipe 4 is provided with a waterproof joint 6 , and the second end of the connecting pipe 4 is connected to the junction box 2 via the waterproof joint 6 .

[0046] By providing the waterproof joint 6 , the convenience of sealing the connecting pipe 4 and the junction box 2 is improved.

[0047] Preferably, Figure 1 , Figure 4-Figure 8 As shown, the ground wire connection part includes a conductor block 5, the ground wire inlet structure includes a first hole 501 arranged on the conductor block 5, and the ground wire outlet structure includes a second hole 502 arranged on the conductor block 5, the second hole 502 is a threaded hole, and a bolt 7 is arranged in the threaded hole.

[0048] By setting the conductor block 5, the conductor block 5 is provided with a first hole 501 and a second hole 502. The first hole 501 is used for direct electrical connection with the motor, and the second hole 502 is used for direct electrical connection with the earth. Since the first hole 501 and the second hole 502 are both set on the conductor block 5, the connection between the earth and the motor passes through the conductor block 5. The setting of the conductor block 5 improves the sealing performance of the ground wire and the wire connector.

[0049] Specifically, the connection body 1 is cylindrical as a whole, the first end face of the connection body 1 is provided with a power supply input terminal, and the second end face is provided with a power supply output terminal, and the power supply output terminal is used to connect to an external power supply. The connection body 1 is provided with a conductor block 5, and the conductor block 5 is sealed and arranged in the connection body 1. The conductor block 5 can be a rectangular block, the first surface of the conductor block 5 faces the first end of the connection body 1, the first hole 501 is arranged on the first surface, the second surface of the conductor block 5 faces the outer peripheral surface of the connection body 1 and is perpendicular to the first surface, the second hole 502 is arranged on the second surface, and the outer peripheral surface of the connection body 1 is provided with a plane, which is flush with the second surface to facilitate the fixing of the bolt 7.

[0050] The first hole 501 is arranged on the end surface of the first end, a plane is arranged on the outer cylindrical surface of the connecting body 1, and the second hole 502 is arranged on the plane.

[0051] The present invention also provides a junction box assembly, such as Fig.10 and Fig.11 As shown, it includes a junction box 2 and the wire connector.

[0052] The junction box assembly has good sealing performance.

[0053] The present invention also provides a motor, such as Fig.10 and Fig.11 As shown, it includes a casing, a power cord 8, a ground wire and the junction box assembly described in claim 4, the junction box 2 is arranged on the casing, and the outlet end of the power cord 8 passes through the junction box 2, the wire hole 3, and the wire inlet hole 101 in sequence and is electrically connected to the power inlet end; the ground wire includes a ground wire inlet section 901 and a ground wire outlet section 902, the outlet end of the ground wire inlet section 901 passes through the junction box 2, the wire hole 3, and the wire inlet hole 101 in sequence and is electrically connected to the ground wire inlet structure, and the inlet end of the ground wire outlet section 902 is electrically connected to the ground wire outlet structure.

[0054] The inlet end of the power line 8 is electrically connected to the stator assembly of the motor, and the inlet end of the ground wire inlet section 901 is connected to the housing of the motor by means of screw crimping, and the inlet end of the ground wire inlet section 901 is located in the junction box 2. The power line 8 and the ground wire inlet section 901 directly connected to the motor are either located in the motor or in the junction box 2, which can be isolated from the external environment of the motor and have a good waterproof effect.

[0055] The ground wire inlet section 901 is used for electrical connection between the housing and the ground wire inlet structure, and the ground wire outlet section 902 is used for electrical connection between the ground wire outlet structure and the earth. The outlet end of the ground wire inlet section 901 is electrically connected to the ground wire inlet structure, and the inlet end of the ground wire outlet section 902 is electrically connected to the ground wire outlet structure. Since the ground wire inlet structure and the ground wire outlet structure are also electrically connected, the housing of the motor is connected to the earth through the ground wire inlet section 901, the wire connector and the ground wire outlet section 902, that is, the grounding of the motor is achieved. The grounding of the motor is achieved in the above manner, which improves the sealing performance of the motor and reduces the possibility of external liquids, dust, insects, etc. entering the motor from the wire hole 3.

[0056] Preferably, Figure 4-Figure 8 As shown, when the ground wire connection part includes a conductor block 5, and the conductor block 5 includes a first hole 501 and a second hole 502, the outlet end of the ground wire inlet section 901 is inserted into the first hole 501 and electrically connected to the conductor block 5, and the outlet end of the ground wire outlet section 902 is electrically connected to the conductor block 5 via the second hole 502.

[0057] The outlet end of the ground wire inlet section 901 is inserted into the first hole 501 and electrically connected to the first hole 501, and the outlet end of the ground wire inlet section 902 is electrically connected to the conductor block 5 through the second hole 502, thus achieving a conductive connection between the ground wire inlet section 901 and the ground wire outlet section 902.

[0058] Preferably, Figure 4-Figure 8 As shown, when the second hole 502 is a threaded hole and is provided with a bolt 7 , the inlet end of the ground wire outlet section 902 includes a terminal, and the bolt 7 is threadedly and sealedly connected to the second hole 502 and squeezes the terminal onto the conductor block 5 .

[0059] The bolt 7 is threadedly sealed with the second hole 502 and the terminal is pressed onto the conductor block 5, so that external liquid, dust and insects cannot enter the inlet hole 101 from the second hole 502. Since the first end of the connecting tube 4 is sealed and connected to the hole, and the second end of the connecting tube 4 is sealed and connected to the wire hole 3, external liquid, dust and insects cannot enter the junction box 2 through the wire connector. The stability of the motor operation is improved, and the protection performance of the motor is improved. The inlet end of the ground wire segment 902 is fixed to the conductor block 5 by inserting the bolt 7 into the second hole 502, which improves the firmness of the ground wire segment 902.

[0060] Furthermore, the terminal is a circular gasket, and the bolt 7 passes through the circular gasket and is inserted into the second hole 502 to electrically connect the inlet end of the ground wire outlet section 902 with the conductor block 5 .

[0061] Preferably, Figure 4 As shown, the second hole 502 is a blind hole.

[0062] By making the second hole 502 a blind hole, foreign matter from the outside cannot enter the wire inlet hole 101 through the second hole 502. At this time, there is no requirement for sealing between the bolt 7 and the second hole 502, which reduces the connection requirements of the ground wire outlet section 902. As long as it is conductive with the conductor, it is beneficial to improve the installation efficiency. Since the second hole 502 is a blind hole, the performance of isolating the outside from the wire inlet hole 101 is high, which is beneficial to improve the protection performance of the motor.

[0063] Preferably, Figure 6-Figure 8 As shown, the second hole 502 is connected to the first hole 501 , and the bolt 7 includes a nut 701 and a threaded rod 702 . The nut 701 squeezes the terminal, and the threaded rod 702 squeezes the outlet end of the ground wire inlet section 901 .

[0064] The nut 701 squeezes the annular gasket, and the threaded rod 702 squeezes the outlet end of the ground wire entry section 901. This makes it possible for the threaded rod 702 to squeeze the outlet end of the ground wire entry section 901 when the bolt 7 squeezes the terminal of the outlet section, thereby fixing the outlet end of the ground wire entry section 901 and improving the stability of the ground wire connection.

[0065] Preferably, Figure 7-Figure 8 As shown, the threaded rod 702 includes a threaded section, an end surface of the threaded section is provided with a blind hole, a guide rod 703 is inserted into the blind hole, and an elastic member 704 is provided between the guide rod 703 and the bottom surface of the blind hole.

[0066] When the threaded rod 702 squeezes the outlet end of the ground wire entry section 901, the guide rod 703 is compressed and squeezes the elastic member 704; that is, the guide rod 703 can move along the axial direction of the threaded rod 702, so that the guide rod 703 can complete the squeezing of the outlet end of the ground wire entry section 901 while the packaging nut 701 squeezes the terminal; one situation is that the nut 701 has already squeezed the terminal, and the guide rod 703 does not produce enough squeezing force on the outlet end of the ground wire entry section 901, or even does not contact the outlet end of the ground wire entry section 901; another situation is that the guide rod 703 has already produced enough squeezing force on the outlet end of the ground wire entry section 901, and the nut 701 still produces enough squeezing force on the terminal, or even does not contact the terminal. Through the above-mentioned arrangement, the firmness of the connection between the outlet end of the ground wire entry section 901, the terminal and the conductor is further improved. The elastic member 704 can be a spring.

[0067] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A wire connector connected to a junction box (2) of a motor, wherein the junction box (2) is provided with a wire hole (3), characterized in that: The wire connector comprises a connecting body (1), the connecting body (1) being provided with a wire entry hole (101), and at least two mutually insulated wiring parts, the two wiring parts comprising a power wiring part and a ground wiring part, the power wiring part comprising a power inlet terminal and a power outlet terminal, and the ground wiring part comprising a ground inlet structure and a ground outlet structure; The power line inlet terminal and the ground line inlet structure both lead to the inlet hole (101), and the connection body (1) further comprises a connection tube (4), a first end of the connection tube (4) being sealed and connected to the inlet hole (101), and a second end of the connection tube (4) being sealed and connected to the wire through hole (3).

2. The wire connector according to claim 1, characterized in that: The second end of the connecting pipe (4) is provided with a waterproof joint (6), and the second end of the connecting pipe (4) is connected to the junction box (2) via the waterproof joint (6).

3. The wire connector according to claim 1, characterized in that: The ground wire connection portion comprises a conductor block (5), the ground wire inlet structure comprises a first hole (501) arranged on the conductor block (5), and the ground wire outlet structure comprises a second hole (502) arranged on the conductor block (5), the second hole (502) is a threaded hole, and a bolt (7) is arranged in the threaded hole.

4. A junction box assembly, comprising a junction box (2) and the wire connector according to any one of claims 1 to 3.

5. A motor, characterized in that: The invention comprises a housing, a power cord (8), a ground wire and a junction box (2) assembly as claimed in claim 4, wherein the junction box (2) is arranged on the housing, and the outlet end of the power cord (8) passes through the junction box (2), the wire hole (3) and the wire inlet hole (101) in sequence and is electrically connected to the power inlet end; the ground wire comprises a ground wire inlet section (901) and a ground wire outlet section (902), and the outlet end of the ground wire inlet section (901) passes through the junction box (2), the wire hole (3) and the wire inlet hole (101) in sequence and is electrically connected to the ground wire inlet structure, and the inlet end of the ground wire outlet section (902) is electrically connected to the ground wire outlet structure.

6. The motor according to claim 5, characterized in that When the ground wire connection portion includes a conductor block (5), and the conductor block (5) includes a first hole (501) and a second hole (502), the outlet end of the ground wire inlet section (901) is inserted into the first hole (501) and electrically connected to the conductor block (5), and the outlet end of the ground wire outlet section (902) is electrically connected to the conductor block (5) via the second hole (502).

7. The motor according to claim 6, characterized in that When the second hole (502) is a threaded hole and is provided with a bolt (7), the inlet end of the ground wire outlet section (902) includes a terminal, and the bolt (7) is threadedly sealed with the second hole (502) and presses the terminal onto the conductor block (5).

8. The motor according to claim 6, characterized in that The second hole (502) is a blind hole.

9. The motor according to claim 7, characterized in that The second hole (502) is connected to the first hole (501), and the bolt (7) comprises a nut (701) and a threaded rod (702), the nut (701) squeezes the terminal, and the threaded rod (702) squeezes the outlet end of the ground wire inlet section (901).

10. The motor according to claim 9, characterized in that The threaded rod (702) comprises a threaded section, the end surface of the threaded section is provided with a blind hole, a guide rod (703) is inserted into the blind hole, and an elastic member (704) is provided between the guide rod (703) and the bottom surface of the blind hole.

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