Waterproof junction box structure of motor

Abstract

The utility model discloses a waterproof junction box structure of a motor, which relates to the technical field of motors and comprises a junction box base, a junction box top cover, a sealing ring, a first sealing assembly and a second sealing assembly. The junction box base is welded to the periphery of the motor body, the junction box top cover is installed at an upper opening of the junction box base, the sealing ring is installed in a first sealing groove in the upper end face of the junction box base, and the first sealing assembly is installed between a second sealing groove of the flange part and a third sealing groove in the upper end face of the junction box base. And the second sealing assembly is mounted between a fourth sealing groove in the inner wall of the junction box base and the lower edge of the guide part of the junction box top cover. Through close fit of the junction box base and the junction box top cover and multiple layers of sealing assemblies, waterproof and dustproof motor wiring and stable and sealed wire outlet assembly design are realized, the environmental adaptability and reliability of the motor are improved, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and particularly relates to a waterproof junction box structure for a motor. Background Art

[0002] During the operation of a three-phase asynchronous motor, the junction box plays a crucial role. It is mainly responsible for protecting the wiring structure of the motor. By using the junction box, the hiding function of the wiring structure can be realized, thus avoiding the exposure of the wiring part to the external environment, which can effectively prevent problems such as accidental electric shock caused by poor contact or external factors. However, the junction boxes on the market currently have deficiencies in waterproof performance, which to a certain extent limits their application in humid or underwater environments and also increases the difficulty and cost of motor maintenance. Summary of the Utility Model

[0003] In view of this, the utility model provides a waterproof junction box structure for a motor. The structure is ingeniously designed and can effectively improve the waterproof performance of the junction box to solve the technical problem of poor waterproof performance in the prior art.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A waterproof junction box structure for a motor, comprising:

[0006] A junction box base, which is installed on the outer periphery of the motor body;

[0007] A junction box top cover, which is installed at the upper opening of the junction box base;

[0008] A sealing ring, which is installed in the first sealing groove on the upper end face of the junction box base, and the flange portion of the junction box top cover presses against the upper end face of the sealing ring;

[0009] A first sealing component, which is installed between the second sealing groove of the flange portion and the third sealing groove on the upper end face of the junction box base;

[0010] A second sealing component, which is installed between the fourth sealing groove on the inner wall of the junction box base and the lower edge of the guiding portion of the junction box top cover. The second sealing component is arranged around the side wall of the junction box base. The second sealing component includes a circular sealing portion, a contraction portion and a second sealing lip connected in sequence. The circular sealing portion is fixedly connected to the side wall of the fourth sealing groove through a plurality of pressing plates. The contraction portion is located in the upper part of the fourth sealing groove. The second sealing lip extends from the upper part of the fourth sealing groove into the inner cavity of the junction box base, and the second sealing lip abuts against the arc portion of the lower edge of the guiding portion;

[0011] Among them, the first sealing component is arranged around the base of the junction box.

[0012] Further, the first sealing component includes an upper sealing arm, a connecting part, and a lower sealing arm that are connected in sequence. The upper sealing arm is received in the second sealing groove, the lower sealing arm is received in the third sealing groove, and the connecting part is received between the second sealing groove and the third sealing groove.

[0013] Furthermore, a plurality of first sealing lips are provided on the upper end surface of the upper sealing arm, and the first sealing lips are pressed against the top wall of the second sealing groove.

[0014] Furthermore, a plurality of first sealing lips are provided on the lower end surface of the lower sealing arm, and the first sealing lips are pressed against the bottom wall of the third sealing groove.

[0015] As can be seen from the above technical solutions, the advantages of the present utility model are as follows:

[0016] 1. Through the tight fit of the base of the junction box and the top cover of the junction box, the present utility model realizes the waterproof and dustproof protection of the motor wiring part, improving the environmental adaptability and service life of the motor.

[0017] 2. By using multiple sealing components, including the first sealing component, the second sealing component, and the third sealing component, the present utility model ensures the all-round sealing of the junction box, effectively preventing the intrusion of moisture and dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0019] Figure 1 It is a schematic diagram of the structure of the motor waterproof junction box of the present utility model.

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the motor waterproof junction box of the present utility model.

[0021] Figure 3 It is Figure 2 a partial structural diagram of the sealing ring, the first sealing component, and the second sealing component of

[0022] Figure 4 It is Figure 3 a partial structural diagram of the first sealing component, the second sealing component, and the pressing plate of

[0023] Figure 5 It is Figure 2 a schematic cross-sectional structure diagram of the wire outlet component of

[0024] Figure 6 The Figure 5 structural schematic diagram of the outgoing line guide sleeve and the third sealing assembly during assembly.

[0025] Figure 7 is the three-dimensional schematic diagram of the structure of the waterproof terminal box of the utility model.

[0026] Description of the reference numerals:

[0027] 10 - Motor body;

[0028] 1 - Terminal box base; 11 - Groove; 12 - First sealing groove; 13 - Third sealing groove; 14 - Fourth sealing groove; 15 - Mounting groove;

[0029] 2 - Terminal box top cover; 21 - Depressed part; 22 - Arc part; 23 - Second sealing groove; 24 - Flange part; 25 - Guide part;

[0030] 3 - Sealing ring;

[0031] 4 - First sealing assembly; 41 - Upper sealing arm; 42 - Connecting part; 43 - First sealing lip; 44 - Lower sealing arm;

[0032] 5 - Second sealing assembly; 51 - Ring-shaped sealing part; 52 - Shrinking part; 53 - Second sealing lip; 6 - Pressure plate;

[0033] 7 - Terminal;

[0034] 8 - Outgoing line assembly; 81 - Outgoing line pipe; 811 - First screw section; 812 - Smooth rod section; 813 - Second screw section; 82 - First nut; 83 - First gasket; 84 - Second nut; 85 - Second gasket; 86 - Outgoing line guide sleeve; 87 - Rubber ring;

[0035] 9 - Third sealing assembly; 91 - Mounting part; 92 - Sealing protrusion. Detailed implementation manners

[0036] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with the implementation manners and drawings. Herein, the illustrative implementation manners of the present utility model and their descriptions are used to explain the present utility model, but do not limit the present utility model.

[0037] Refer to Figures 1 to 7 , as Figure 1As shown in the figure, this embodiment provides a waterproof junction box structure for a motor, which includes a junction box base 1, a junction box top cover 2, a sealing ring 3, a first sealing component 4 and a second sealing component 5. The junction box base 1 is welded to the outer periphery of the motor body 10, and the junction box top cover 2 is installed at the upper opening of the junction box base 1. A pair of grooves 11 are provided on the left and right side walls of the junction box base 1 for subsequent bolt fixation. The sealing ring 3 is installed in the first sealing groove 12 on the upper end surface of the junction box base 1, and the flange portion 24 of the junction box top cover 2 presses against the upper end surface of the sealing ring 3, thereby forming a preliminary sealing effect. The first sealing component 4 is installed between the second sealing groove 23 of the flange portion 24 and the third sealing groove 13 on the upper end surface of the junction box base 1 to further enhance the sealing performance. The second sealing component 5 is installed between the fourth sealing groove 14 on the inner wall of the junction box base 1 and the lower edge of the guiding portion 25 of the junction box top cover 2 to achieve all-round sealing protection of the wiring base. The terminal 7 is installed on the bottom wall of the junction box base 1 and extends into the motor body 10.

[0038] Among them, the first sealing component 4 and the second sealing component 5 are arranged around the junction box base 1.

[0039] In some embodiments, as Figure 2 、 Figure 3 and Figure 7 shown, recessed portions 21 corresponding to the grooves 11 one by one are provided around the top of the junction box top cover 2. A plurality of bolts pass through the through holes of the recessed portions 21 and cooperate with the nuts provided in the grooves 11 to firmly lock the junction box top cover 2 on the junction box base 1, ensuring the stability of the structure.

[0040] In some embodiments, the main bodies of the first sealing component 4 and the second sealing component 5 are both annular, making the sealing effect more uniform and reliable.

[0041] In some embodiments, as Figure 4 shown, the first sealing component 4 includes an upper sealing arm 41, a connecting portion 42 and a lower sealing arm 44 connected in sequence. The upper sealing arm 41 is accommodated in the second sealing groove 23, the lower sealing arm 44 is accommodated in the third sealing groove 13, and the connecting portion 42 is accommodated between the second sealing groove 23 and the third sealing groove 13 to form a tight sealing structure.

[0042] In some embodiments, a plurality of first sealing lips 43 are provided on the upper end surface of the upper sealing arm 41 and the lower end surface of the lower sealing arm 44. These first sealing lips 43 respectively press against the top wall of the second sealing groove 23 and the first sealing lip 43 presses against the bottom wall of the third sealing groove 13, thereby effectively preventing the intrusion of moisture and dust.

[0043] In some embodiments, as Figure 4As shown, the second sealing assembly 5 is arranged around the side wall of the junction box base 1, and includes an annular sealing portion 51, a constriction portion 52, and a second sealing lip 53 that are connected in sequence. The annular sealing portion 51 is installed on the side wall of the fourth sealing groove 14. The constriction portion 52 is located above the fourth sealing groove 14. The second sealing lip 53 extends from the upper part of the fourth sealing groove 14 into the inner cavity of the junction box base 1, so that the second sealing assembly 5 can closely fit between the junction box base 1 and the junction box top cover 2 to form a reliable sealing barrier.

[0044] In some embodiments, the annular sealing portion 51 is fixedly connected to the side wall of the fourth sealing groove 14 through a plurality of pressing plates 6. The pressing plates 6 are installed in the fourth sealing groove 14 by connection means such as screws, making the second sealing assembly 5 more stable and less likely to loosen or shift.

[0045] In some embodiments, the second sealing lip 53 abuts against the arc portion 22 at the lower edge of the guiding portion 25, further enhancing the sealing effect and effectively preventing moisture and dust from seeping in through the gap between the junction box top cover 2 and the junction box base 1.

[0046] In some embodiments, such as Figure 2 、 Figure 5 、 Figure 6 As shown, this embodiment further includes an outgoing line assembly 8. The outgoing line assembly 8 includes: an outgoing line pipe 81, a first nut 82, a second nut 84, a second gasket 85, and an outgoing line guide sleeve 86.

[0047] Among them, the outgoing line pipe 81 is composed of a first screw section 811, a smooth rod section 812, and a second screw section 813 connected in sequence. During installation, the first screw section 811 and the smooth rod section 812 are inserted into the installation groove 15 on the side wall of the junction box base 1, so that the second screw section 813 abuts against the junction box base 1, thus ensuring the stable installation of the outgoing line assembly 8. The first nut 82 is installed on the outer periphery of the first screw section 811 to fix one end of the outgoing line pipe 81 and prevent the outgoing line pipe 81 from loosening or falling off. The second nut 84 is arranged closely against the first gasket 83 on the outer periphery of the second screw section 813. By tightening the second nut 84, the position of the outgoing line pipe 81 can be further adjusted and fixed. The second gasket 85 is installed on the right side of the second nut 84, which can reduce the friction and wear between the second nut 84 and the outgoing line guide sleeve 86. The outgoing line guide sleeve 86 is arranged closely against the second gasket 85 on the outer periphery of the second screw section 813. The outgoing line guide sleeve 86 provides a smooth outgoing line channel for the wire, and also through the third sealing assembly 9 arranged on its inner wall. The third sealing assembly 9 is in an annular structure, effectively preventing the intrusion of moisture and dust.

[0048] In some embodiments, such as Figure 6As shown in the figure, the third sealing assembly 9 includes two-side mounting parts 91 and a sealing projection 92. The sealing projection 92 connects the two-side mounting parts 91 to form a reliable sealing barrier. A rubber ring 87 is provided in the cavity jointly formed by the sealing projection 92 and the wire outlet guide sleeve 86, further enhancing the sealing effect and making the wire outlet assembly 8 perform excellently in terms of waterproof and dustproof.

[0049] The wire outlet assembly 8 of this embodiment has the advantages of stable structure, convenient installation, good sealing effect, etc., and can effectively protect the wires inside the motor from the influence of the external environment, improving the overall reliability and service life of the motor.

[0050] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A waterproof junction box structure for a motor, characterized in that, Including: A junction box base (1), and the junction box base (1) is installed on the outer periphery of a motor body (10); A junction box top cover (2), and the junction box top cover (2) is installed at the upper opening of the junction box base (1); A sealing ring (3), and the sealing ring (3) is installed in a first sealing groove (12) on the upper end surface of the junction box base (1), and a flange portion (24) of the junction box top cover (2) presses against the upper end surface of the sealing ring (3); A first sealing assembly (4), and the first sealing assembly (4) is installed between a second sealing groove (23) of the flange portion (24) and a third sealing groove (13) on the upper end surface of the junction box base (1); A second sealing assembly (5), and the second sealing assembly (5) is installed between a fourth sealing groove (14) on the inner wall of the junction box base (1) and the lower edge of a guiding portion (25) of the junction box top cover (2). The second sealing assembly (5) is arranged around the side wall of the junction box base (1). The second sealing assembly (5) includes a circular sealing portion (51), a constriction portion (52), and a second sealing lip (53) that are connected in sequence. The circular sealing portion (51) is fixedly connected to the side wall of the fourth sealing groove (14) through a plurality of pressing plates (6). The constriction portion (52) is located in the upper part of the fourth sealing groove (14). The second sealing lip (53) extends from the upper part of the fourth sealing groove (14) into the inner cavity of the junction box base (1), and the second sealing lip (53) abuts against an arc portion (22) of the lower edge of the guiding portion (25); Wherein, the first sealing assembly (4) is arranged around the junction box base (1).

2. The motor waterproof junction box structure according to claim 1, characterized in that, The first sealing assembly (4) includes an upper sealing arm (41), a connecting portion (42), and a lower sealing arm (44) that are connected in sequence. The upper sealing arm (41) is received in the second sealing groove (23). The lower sealing arm (44) is received in the third sealing groove (13). The connecting portion (42) is received between the second sealing groove (23) and the third sealing groove (13).

3. The motor waterproof junction box structure according to claim 2, wherein, A plurality of first sealing lips (43) are provided on the upper end surface of the upper sealing arm (41), and the first sealing lips (43) press against the top wall of the second sealing groove (23).

4. The motor waterproof junction box structure according to claim 2, characterized in that, A plurality of first sealing lips (43) are provided on the lower end surface of the lower sealing arm (44), and the first sealing lips (43) press against the bottom wall of the third sealing groove (13).

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