Wire outlet clamp and motor using same

Abstract

The utility model discloses a wire outlet clamp and a motor using the same. The wire outlet clamp comprises a sealing gasket and a wire clamp body which are integrally formed. Wherein more than two wire through holes are formed between the wire clamp body and the sealing gasket in a penetrating manner, and the aperture of each wire through hole is gradually reduced in the direction from the wire clamp body to the sealing gasket; and the sealing gasket and the wire clamp body are made of materials suitable for extrusion deformation. According to the utility model, the operation of inserting the lead wire is convenient and efficient, and the sealing requirement when the lead wire is adapted to a motor can be met by utilizing the characteristic that the lead wire is extruded to deform.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a wire outlet clamp and a motor using the same. Background Art

[0002] Enclosed motors are suitable for use in poor and humid environments. Water vapor can enter the motor windings through the power cord, which can reduce the motor's service life and even burn out the motor in severe cases.

[0003] The wire clamp is located at the connection between the motor's terminal box and the motor assembly, and plays a sealing role. Conventional dual-voltage single-phase AC asynchronous motors have five or six lead wires. When using nylon-type wire clamps with higher hardness, they are all fastened together by locks. This structure is not easy to remove when installed inside the motor, making maintenance difficult, and it is easy to misalign and clamp the wires during installation. When the motor uses six leads, the seven-hole wire clamp needs to be filled with a short lead, which is not very versatile and cumbersome to install, thus reducing the efficiency of motor production. In addition, the outer periphery of the wire clamp cannot fit tightly with the motor, resulting in a gap between the mating surface of the wire clamp and the motor, which affects the stability of the wire clamp during long-term use.

[0004] Therefore, with regard to the problems existing in the outlet clamps currently used in the prior art, it is necessary to optimize their structure once again. Utility Model Content

[0005] The first purpose of the utility model is to provide a wire outlet clamp to solve the technical problem of optimizing its overall use performance.

[0006] The second object of the utility model is to provide a motor to solve the technical problem of optimizing the performance of the outlet clamp used in the motor.

[0007] The outlet clamp of the utility model is realized in this way:

[0008] A wire outlet clamp, comprising: an integrally formed sealing pad and a wire clamp body; wherein

[0009] There are two or more wire holes formed between the wire clamp body and the sealing gasket, and the diameter of each of the wire holes gradually decreases along the wire clamp body toward the sealing gasket; and

[0010] The sealing pad and the wire clamp body are both made of materials suitable for extrusion deformation.

[0011] In an optional implementation of the present invention, the sealing pad and the wire clamp body are both made of rubber material.

[0012] In an optional implementation of the present invention, the sealing pad and the wire clamp body are both formed with two or more cutouts extending along the lead-out direction of the lead wires and connecting each wire-through hole.

[0013] In an optional implementation of the utility model, seven wire holes are formed between the wire clamp body and the sealing pad; and the seven wire holes are arranged in two rows; and

[0014] The wire holes in each row are distributed in a staggered manner with respect to the wire holes in the adjacent row.

[0015] In an optional implementation of the present invention, the diameter of each of the wire holes is the same; or

[0016] The aperture of at least one of the wire-through holes is different from the apertures of the other wire-through holes.

[0017] In an optional implementation of the present invention, a pair of outer side walls in the length direction of the wire clamp body are chamfered from the end away from the sealing gasket toward the side of the sealing gasket.

[0018] In an optional implementation of the utility model, the cross-sectional area of ​​the sealing gasket perpendicular to the direction in which the lead wires are led out is larger than the cross-sectional area of ​​the wire clamp body perpendicular to the direction in which the lead wires are led out; and

[0019] The thickness of the sealing pad along the direction in which the lead wires are output is smaller than the thickness of the wire clamp body along the direction in which the lead wires are output.

[0020] The motor of the utility model is realized as follows:

[0021] A motor comprises: a motor assembly, a junction box, and a wire outlet clamp arranged between the motor assembly and the junction box;

[0022] The lead wires on the motor assembly enter the junction box after being guided by the lead wire clamp; and

[0023] The sealing pad is used to be connected to the junction box, and the wire clamp body is used to be fixed in the motor assembly.

[0024] In an optional implementation of the utility model, the motor assembly is provided with a guide column that is plugged into and matched with the sealing gasket, and the sealing gasket is formed with a guide hole for being sleeved on the guide column.

[0025] In an optional implementation of the utility model, the end cover of the motor assembly is provided with a wire outlet groove for matching the wire clamp body; and

[0026] When the wire clamp body is embedded in the wire outlet groove, the sealing gasket is suitable for covering the notch of the wire outlet groove.

[0027] By adopting the above technical scheme, the utility model has the following beneficial effects: the outlet clamp of the utility model and the motor using the same, through the cooperation of the sealing gasket and the wire clamp body, when installing, the wire clamp body and the motor assembly are assembled together, and then matched with the junction box through the sealing gasket. Under such a structure, the sealing gasket forms a mutual seal between the motor assembly and the junction box, preventing water vapor from entering the junction box or the end cover through the gap between the junction box and the end cover of the motor assembly. That is to say, the sealing gasket can realize the matching of the outlet clamp of the utility model with the junction box, and can also realize the sealing cooperation between the motor assembly and the junction box, achieving the effect of killing two birds with one stone.

[0028] Furthermore, by arranging multiple wire holes on the wire outlet clamp, and each wire hole is designed with a corresponding incision, this structure is combined with the design of the wire outlet clamp using a material suitable for extrusion deformation, so that each lead can enter the wire hole through the incision, which greatly reduces the difficulty of assembling the lead and the wire outlet clamp. In addition, by adopting this structure, the stability of the position of the lead in the wire hole can be improved, preventing the lead from shaking or falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the exploded structure of the motor of the utility model;

[0030] Figure 2 This is a schematic structural diagram of the outlet clamp of the utility model from a first perspective;

[0031] Figure 3 This is a schematic structural diagram of the outlet clamp of the utility model from a second viewing angle;

[0032] Figure 4 This is a schematic structural diagram of the outlet clamp of the utility model from a third viewing angle;

[0033] Figure 5 It is a schematic diagram of the matching structure of the outlet clamp, the motor and the junction box of the utility model;

[0034] Figure 6 It is a schematic structural diagram of a junction box of a motor of the utility model.

[0035] In the figure: sealing gasket 1, guide hole 11, connecting hole 12, wire clamp body 2, wire hole 3, cutout 4, chamfer K, motor assembly 5, junction box 6, end cover 7, wire outlet groove 8, assembly groove 9, guide column 10. DETAILED DESCRIPTION

[0036] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0037] Embodiment 1:

[0038] See also Figures 1 to 6 As shown, this embodiment provides a wire outlet clamp, including: an integrally formed sealing pad 1 and a wire clamp body 2; wherein the wire clamp body 2 and the sealing pad 1 are formed with two or more wire through holes 3; and the sealing pad 1 and the wire clamp body 2 are both made of a material suitable for extrusion deformation. In terms of material, for example, a specific optional implementation method is that the sealing pad 1 and the wire clamp body 2 are both made of rubber material.

[0039] Next, an optional implementation is given as an example with reference to the accompanying drawings. Seven wire holes 3 are formed between the wire clamp body 2 and the sealing gasket 1; and the seven wire holes 3 are arranged in two rows. Of course, it can also be arranged in a three-row structure. The consideration here is to improve the utilization rate of the layout space on the sealing gasket 1 without increasing the overall size of the sealing gasket 1. It should be noted that the aperture of each wire hole 3 here can be the same; or the aperture of at least one wire hole 3 is different from the aperture of the other wire holes 3. The specific aperture of the wire hole 3 here can be determined in combination with the use requirements of the lead wires of the specific motor, and this embodiment does not make an absolute limitation on this.

[0040] Based on the above situation, furthermore, considering the reasonable use of the space of the sealing gasket 1, as many wire holes 3 as possible can be accommodated on the sealing gasket 1 of a certain size, and the wire holes 3 in each row are staggered with the wire holes 3 in the adjacent rows.

[0041] Furthermore, in order to improve the efficiency of inserting the lead wire into the outlet clamp, the present embodiment also forms two or more cutouts 4 extending along the outlet direction of the lead wire and connecting each through hole 3 on both the sealing pad 1 and the wire clamp body 2. In the case of using seven through holes 3, seven cutouts 4 are designed accordingly. Under this structure, the outlet clamp is designed with a material suitable for extrusion deformation, so that each lead wire can enter the through hole 3 through the cutout 4, which greatly reduces the difficulty of assembling the lead wire and the outlet clamp. In addition, the structure can also improve the stability of the position of the lead wire in the through hole 3, preventing the lead wire from shaking or falling off.

[0042] In addition, considering that the outlet clamp of this embodiment needs to be fixed to the end cover 7 of the motor assembly 5 when used in the motor, a structure suitable for the assembly of the outlet clamp needs to be designed on the end cover 7. Considering the convenience of mold opening and production, a wire clamp body 2 formed of a rectangular parallelepiped is generally used. Therefore, this embodiment takes the wire clamp body 2 in the shape of a rectangular parallelepiped as an example, and a chamfer K is formed on a pair of outer side walls in the length direction of the wire clamp body 2 from its end away from the sealing gasket 1 to the side of the sealing gasket 1. It should be noted that the design of the chamfer K here is mainly to make the wire clamp body 2 assembled with the motor assembly 5 when the outlet clamp of this example is fixed to the motor. At this time, the chamfer K is combined with the design of the material of the sealing gasket 1 suitable for extrusion deformation, so that the wire clamp body 2 can be more easily assembled into the motor assembly 5, and at the same time, the wire clamp body 2 can be fastened in the motor assembly 5 by using the micro-deformation of the wire clamp body 2. Of course, in principle, a chamfer K can also be formed on a pair of side walls in the width direction of the wire clamp body 2, and this embodiment does not make an absolute limitation on this. Since the outer side wall of the wire clamp body 2 in the length direction has a large contact area with the motor assembly 5 during assembly, the chamfer K is preferably designed on the outer side wall in the length direction.

[0043] It is necessary to explain next that, since the sealing gasket 1 also needs to assume a sealing effect when it is used in a specific motor, the cross-sectional area of ​​the sealing gasket 1 perpendicular to the lead-out direction is larger than the cross-sectional area of ​​the wire clamp body 2 perpendicular to the lead-out direction; and the thickness of the sealing gasket 1 along the lead-out direction is smaller than the thickness of the wire clamp body 2 along the lead-out direction.

[0044] In summary, for the lead-out clamp of this embodiment, not only is the operation of inserting the lead-in convenient and efficient, but its characteristic of being squeezed and deformed can also be used to meet the sealing requirements when it is adapted to the motor.

[0045] Embodiment 2:

[0046] See also Figures 1 to 6 As shown, based on the outlet clamp of embodiment 1, this embodiment provides a motor, including: a motor assembly 5, a terminal box 6, and an outlet clamp as in embodiment 1 arranged between the motor assembly 5 and the terminal box 6; the lead wire on the motor assembly 5 enters the terminal box 6 after being guided by the outlet clamp; and the sealing pad 1 is used to be connected to the terminal box 6, and the wire clamp body 2 is used to be fixed in the motor assembly 5. The motor assembly 5 and the terminal box 6 in this embodiment can be selected by any mature means in the prior art, and this embodiment does not make an absolute limitation on the implementation principle thereof.

[0047] More specifically, the end cover 7 of the motor assembly 5 is provided with a wire outlet groove 8 for mating with the wire clamp body 2; and when the wire clamp body 2 is embedded in the wire outlet groove 8, the sealing gasket 1 is suitable for covering the notch of the wire outlet groove 8. In such a structure, the sealing gasket 1 forms a mutual seal between the motor assembly 5 and the junction box 6, preventing water vapor from entering the junction box 6 or the end cover 7 from the gap between the junction box 6 and the end cover 7 of the motor assembly 5. That is to say, the sealing gasket 1 can not only realize the mating of the wire outlet clamp of the utility model with the junction box 6, but also realize the sealing cooperation of the motor assembly 5 and the junction box 6, achieving the effect of killing two birds with one stone.

[0048] Furthermore, in conjunction with the accompanying drawings, an optional implementation is given as an example, in which at least two connection holes 12 are designed on the sealing gasket 1 for fastening it between the terminal box 6 and the motor assembly 5. Correspondingly, an assembly groove 9 for installing the sealing gasket 1 is provided in the terminal box 6, and two screws are inserted from the inside of the terminal box 6, and a threaded hole for adapting the screws is designed on the end cover 7 of the motor assembly 5, so that the terminal box 6 and the front cover 7 can be tightly connected together, and the sealing gasket 1 can also be firmly fixed between the terminal box 6 and the motor assembly 5. Under this structure, that is to say, for the outlet clamp of this embodiment, it is mainly fixed to the motor assembly 5 by utilizing its characteristic of being squeezed and deformed, thereby ensuring the realization of the sealing effect. Then, the outlet clamp is fastened at the same time by utilizing the connection assembly between the outlet box and the motor assembly 5 itself, so that the outlet clamp is reliably fixed, so that there is no need to consider additional auxiliary fixing methods for the outlet clamp itself, which simplifies the assembly process and can simultaneously achieve the sealing and the lead-out effect of the lead wire.

[0049] Considering the reliability of the sealing effect of the sealing gasket 1 on the notch of the outlet groove 8 of the end cover 7, a guide column 10 plugged with the sealing gasket 1 is provided on the motor assembly 5, and a guide hole 11 for sleeved on the guide column 10 is formed on the sealing gasket 1. In this way, on the premise that the sealing gasket 1 is assembled with the terminal box 6, its position relative to the notch of the outlet groove 8 is also reliably defined by the guide column 10, and there will be no problem of outlet deviation.

[0050] Finally, it should be noted that the aperture of the wire hole 3 used in this embodiment gradually decreases along the wire clamp body 2 toward the sealing pad 1. When the lead wires inside the motor are in a loose state, it is easy to rub against the rotor. When all the lead wires are placed in it and inserted into the wire outlet groove 8 of the end cover 7, you only need to pull the lead wires separately to easily pull them out so that each lead wire is in a straight state. Then install the junction box 6 so that the wire clamp is subjected to pressure in the direction of the end cover 7. The groove wall of the wire outlet groove 8 around it also exerts an extrusion effect on the wire clamp, which can effectively improve the tightness between the lead wire and the wire hole 3 and greatly improve the waterproof performance. If the motor uses six wires, since the wire clamp is a rubber body, the extrusion effect will squeeze the seventh extra wire hole 3 closed. In this way, there is no need to fill the extra wire hole 3 with short leads. The wire clamp can also achieve the above effect and has better versatility.

[0051] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0052] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are 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 on the present invention.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0055] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0056] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A wire outlet clamp, characterized in that: include: The sealing gasket and the wire clamp body are formed in one piece; There are two or more wire holes formed between the wire clamp body and the sealing gasket, and the diameter of each of the wire holes gradually decreases along the wire clamp body toward the sealing gasket; and The sealing pad and the wire clamp body are both made of materials suitable for extrusion deformation.

2. The outlet clamp according to claim 1, characterized in that: The sealing pad and the wire clamp body are both made of rubber material.

3. The outlet clamp according to claim 1 or 2, characterized in that: The sealing pad and the wire clamp body are both formed with more than two cutouts extending along the wire outlet direction of the lead wire and communicating with each wire through hole.

4. The outlet clamp according to claim 1 or 2, characterized in that: Seven wire holes are formed between the wire clamp body and the sealing pad; and the seven wire holes are arranged in two rows; and The wire holes in each row are distributed in a staggered manner with respect to the wire holes in the adjacent row.

5. The outlet clamp according to claim 4, characterized in that: The diameter of each of the wire-passing holes is the same; or The aperture of at least one of the wire-through holes is different from the apertures of the other wire-through holes.

6. The outlet clamp according to claim 1 or 2, characterized in that: A pair of outer side walls in the length direction of the wire clamp body are chamfered from the end away from the sealing gasket toward one side of the sealing gasket.

7. The outlet clamp according to claim 1, characterized in that: The cross-sectional area of ​​the sealing gasket perpendicular to the direction in which the lead wires are led out is larger than the cross-sectional area of ​​the wire clamp body perpendicular to the direction in which the lead wires are led out; and The thickness of the sealing pad along the direction in which the lead wires are output is smaller than the thickness of the wire clamp body along the direction in which the lead wires are output.

8. A motor, characterized in that: include: A motor assembly, a junction box, and a terminal clamp according to any one of claims 1 to 7 disposed between the motor assembly and the junction box; The lead wires on the motor assembly enter the junction box after being guided by the lead wire clamp; and The sealing gasket is used to be connected to the junction box, and the wire clamp body is used to be fixed in the motor assembly.

9. The motor according to claim 8, characterized in that The motor assembly is provided with a guide column which is plugged and matched with the sealing gasket, and the sealing gasket is formed with a guide hole which is used for being sleeved on the guide column.

10. The motor according to claim 8 or 9, characterized in that: The end cover of the motor assembly is provided with a wire outlet groove for matching the wire clamp body; and When the wire clamp body is embedded in the wire outlet groove, the sealing gasket is suitable for covering the notch of the wire outlet groove.

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