Junction box and motor and water pump using same

Abstract

The utility model discloses a junction box and a motor and a water pump using the same. The junction box comprises a shell and a shell cover which are suitable for being connected in a matched mode to form a containing cavity, and a sealing gasket arranged between the shell and the shell cover. Wherein a caulking groove used for fixing the sealing gasket is formed in the shell or the shell cover, and when the shell and the shell cover are assembled in place, the sealing gasket is clamped by the shell and the shell cover; a clamping assembly used for clamping the capacitor is further arranged in the containing cavity. The clamp assembly comprises at least one supporting rib arranged on the shell and used for supporting the capacitor from the bottom and at least one pressing rib arranged on the shell cover and used for abutting against the capacitor from the top.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a junction box and a motor and a water pump using the junction box. Background Art

[0002] A water pump is a machine that transports liquids or pressurizes liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the liquid pressure. It is mainly used to transport liquids including water, oil, acid and alkali liquids, emulsions, suspensions and other media. Some electronic components in the water pump, such as terminals, thermal protectors, capacitors, etc. The single-phase motor corresponding to the closed water pump in the water pump will be used in harsh environments. Its capacitors, thermal protectors, terminal blocks and other components will be corroded by water vapor and dust, which will reduce the life of the components, thereby greatly reducing the reliability of the motor operation.

[0003] Most of the single-phase motors in the prior art are fixed on the motor by a circuit box, and its composition structure includes bolts, a shell cover, a housing, a sealing gasket, a capacitor, a thermal protector, a terminal block, screws, etc. The installation of the capacitor in the circuit box is generally fixed by a clamp, such as but not limited to the single-phase motor terminal box disclosed by the announcement number CN218678671U. The locking column and the locking hole at both ends of the clamp need to be designed inside the terminal box body, which increases the complexity of assembly. In addition, the sealing ring, the stability of the state of the sealing ring during use directly affects the sealing of the entire terminal box. For this, it is necessary to consider that the sealing ring cannot shake in the terminal box. For this, the structure of opening a locking hole on the sealing ring in the above-mentioned public technology can be adopted to achieve this. However, although this structure can achieve effective fixing of the sealing ring, it is necessary to ensure that the locking hole on the sealing ring corresponds to the threaded hole on the terminal box body, and there must be no dimensional deviation to ensure that the locking screw can simultaneously penetrate the terminal box body and the sealing ring, so the required precision is high from the processing technology.

[0004] Therefore, with regard to the problems existing in the junction box currently used in the prior art, it is necessary to optimize its structure again. Utility Model Content

[0005] The first purpose of the utility model is to provide a junction box to solve the technical problem of optimizing the overall performance of the junction box.

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

[0007] The third object of the utility model is to provide a water pump to solve the technical problem of optimizing the performance of the motor used in the water pump.

[0008] The junction box of the utility model is realized as follows:

[0009] A junction box comprises: a shell and a shell cover which are adapted to be connected and matched to form a receiving cavity, and a sealing gasket arranged between the shell and the shell cover;

[0010] The housing or the housing cover is formed with an embedding groove for fixing the sealing gasket, and when the housing and the housing cover are assembled in place, the sealing gasket is clamped by the housing and the housing cover; and

[0011] The receiving cavity is also provided with a clamp assembly for clamping the capacitor;

[0012] The clamp assembly comprises at least one supporting rib arranged on the shell body for supporting the capacitor from the bottom and at least one pressing rib arranged on the shell cover for pressing the capacitor from the top.

[0013] In an optional implementation of the utility model, the embedding groove is provided on the shell cover;

[0014] The embedding groove at least comprises an annular groove arranged in an annular shape; and

[0015] The sealing gasket comprises at least an annular body for being embedded in the annular groove.

[0016] In an optional implementation of the present invention, the embedding groove further includes at least one notch disposed on the side edge of the annular groove facing the receiving cavity and communicating with the annular groove; and

[0017] The sealing gasket also includes an extension body connected to the annular body and suitable for extending into the notch.

[0018] In an optional implementation of the utility model, the shell body is integrally formed with two support ribs arranged at intervals, and the shell cover is integrally formed with two pressure ribs arranged at intervals;

[0019] Each of the supporting ribs and each of the pressing ribs is an arc-shaped structure adapted to the outer wall of the capacitor.

[0020] In an optional implementation of the present invention, a first connecting portion and a second connecting portion are provided in the housing; and

[0021] The first connection portion is provided with a first positioning column matched with a low-power device, and a second positioning column matched with a high-power device;

[0022] The second connecting portion is provided with a fastener for fixing the low-power device or the high-power device.

[0023] In an optional implementation of the present invention, a positioning assembly is further provided between the shell and the shell cover;

[0024] The positioning assembly comprises a positioning boss and a positioning groove which are plug-fitted.

[0025] In an optional implementation of the utility model, a fastening assembly for maintaining a fastened fit between the shell and the shell cover is further provided between the shell and the shell cover;

[0026] The fastening assembly comprises screws and fastening holes for use in conjunction with each other.

[0027] In an optional implementation of the present invention, the fastening hole includes a threaded hole formed on the housing suitable for matching with the screw thread, and a matching hole provided on the housing cover suitable for the screw to pass through; wherein

[0028] The matching hole comprises a small inner diameter hole and a large inner diameter hole which are connected to each other; the large inner diameter hole is located on the side of the shell cover facing the shell body, and the inner diameter of the small inner diameter hole is slightly smaller than the outer diameter of the threaded part of the screw.

[0029] The motor of the utility model is realized as follows:

[0030] A motor comprises: the junction box.

[0031] The water pump of the utility model is realized in this way:

[0032] A water pump comprises: the motor.

[0033] By adopting the above technical solution, the utility model has the following beneficial effects: the junction box of the utility model and the motor and water pump using the same fix the sealing gasket through the embedding groove for fixing the sealing gasket, thereby ensuring that the shell and the shell cover form a sealed fit and simplifying the operation process of fixing the sealing gasket. In addition, for fixing the capacitor in the junction box, the clamp assembly is directly arranged on the shell and the shell cover, so that the capacitor can be fixed synchronously during the process of assembling the shell and the shell cover, thereby simplifying the operation process of fixing the capacitor and improving the assembly efficiency of the overall junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the exploded structure of the housing and the housing cover of the junction box of the utility model;

[0035] Figure 2 It is a structural schematic diagram of the shell of the junction box of the utility model;

[0036] Figure 3 This is a schematic diagram of the overall exploded structure of the junction box of the utility model;

[0037] Figure 4 It is a schematic diagram of the matching structure of the clamp assembly and the capacitor of the junction box of the utility model;

[0038] Figure 5It is a structural schematic diagram of the housing cover and screws of the junction box of the utility model in a fastened state;

[0039] Figure 6 It is a schematic diagram of the structure of the housing cover and screws of the junction box of the utility model in a non-fastened state;

[0040] Figure 7 It is a structural schematic diagram of the second connection part and the first connection part of the junction box of the utility model being adapted to a high-power device.

[0041] In the figure: shell 1, shell cover 2, supporting ribs 11, pressing ribs 21, annular grooves 22, notched grooves 23, annular body 31, extension body 32, first connecting portion 41, second connecting portion 42, first positioning column 43, second positioning column 44, wiring protrusion 45, positioning boss 51, positioning groove 52, screw 6, threaded portion 61, threaded hole 71, small inner diameter hole 72, large inner diameter hole 73, capacitor 8, low power device 9, high power device 10, fastener 100. DETAILED DESCRIPTION

[0042] 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.

[0043] Embodiment 1:

[0044] See also Figures 1 to 7 As shown, this embodiment provides a junction box, comprising: a shell 1 and a shell cover 2 suitable for being matched and connected to form a receiving cavity, and a sealing gasket arranged between the shell 1 and the shell cover 2; wherein a groove for fixing the sealing gasket is formed on the shell 1 or the shell cover 2, and when the shell 1 and the shell cover 2 are assembled in place, the sealing gasket is clamped by the shell 1 and the shell cover 2. That is to say, the sealing gasket is pre-assembled in the shell 1 or the shell cover 2, and in the process of assembling the shell 1 and the shell cover 2, the sealing gasket is naturally clamped to achieve the sealing matching effect of the shell 1 and the shell cover 2.

[0045] Furthermore, in order to meet the fixing requirements of the capacitor 8 in the junction box, a clamp assembly for clamping the capacitor 8 is also provided in the receiving cavity; specifically, the clamp assembly includes at least one supporting rib 11 provided on the housing 1 for supporting the capacitor 8 from the bottom and at least one pressing rib 21 provided on the housing cover 2 for pressing the capacitor 8 from the top. In this regard, in a preferred embodiment, the supporting rib 11 is integrally formed on the housing 1, and the pressing rib 21 is integrally formed on the housing cover 2, which can not only simplify the processing and production process, but also simplify the assembly process.

[0046] Based on the above situation, in conjunction with the attached drawings, a specific optional implementation method is given as an example. Two support ribs 11 arranged at intervals are integrally formed on the shell 1, and two pressure ribs 21 arranged at intervals are integrally formed on the shell cover 2; each support rib 11 and each pressure rib 21 are arc-shaped structures that adapt to the outer wall of the capacitor 8. In more detail, the support ribs 11 and the pressure ribs 21 here can be relatively arranged, or they can be staggered. The "relative" here means that when the shell 1 and the shell cover 2 are assembled in place, the pressure rib 21 is located directly below the support rib 11, and the corresponding "staggered" means that when the shell 1 and the shell cover 2 are assembled in place, the pressure rib 21 is not in the area directly below the support rib 11. The above situations all meet the use requirements of this embodiment, and this embodiment does not make an absolute limitation on this.

[0047] Next, it is to be specifically described that, regarding the sealing gasket, an optional situation is given in conjunction with the accompanying drawings, where the embedding groove is provided on the shell cover 2. Regarding the embedding groove here, in an optional embodiment, the embedding groove includes an annular groove 22 arranged in an annular shape; and the sealing gasket includes an annular body 31 for embedding in the annular groove 22. For this situation, the following deformation can also be made: the embedding groove also includes at least one notch 23 connected to the annular groove 22 and provided on the side edge of the annular groove 22 facing the receiving cavity; and the sealing gasket also includes an extension body 32 connected to the annular body 31 and suitable for extending into the notch 23. Preferably, the notch 23 is designed to be multiple and evenly distributed, and the corresponding extension body 32 is also set to be multiple and evenly distributed. The shapes of the notch 23 and the extension body 32 here can meet the use requirements of this embodiment as long as they are adapted, and this embodiment is not absolutely limited to this. The sealing gasket and the embedding groove here can not only ensure that the sealing gasket is installed reliably in the embedding groove under the cooperation of the notch 23 and the extension body 32, but also avoid the problem of shaking or even slipping of the sealing gasket.

[0048] In addition, it is also necessary to explain that a first connection part 41 and a second connection part 42 are provided in the housing 1; and a first positioning column 43 matching with the low-power device 9 and a second positioning column 44 matching with the high-power device are provided on the first connection part 41; a fastener 100 for fixing the low-power device 9 or the high-power device 10 is provided on the second connection part 42, and this structure greatly improves the versatility of the second connection part 42. At the same time, the second connection part 42 can be fixed with only one fastener 100, such as a screw, so that the low-power device 9 or the high-power device 10 can be installed simply and quickly, which is conducive to management and maintenance.

[0049] In addition, a wiring protrusion 45 is provided at the wiring position in the shell 1 to prevent internal condensed water from entering and causing a short circuit. The condensed water is discharged from the drainage hole (the drainage hole here adopts any mature means in the prior art, which is not marked in the figure of this embodiment).

[0050] On the basis of the above structure, in order to improve the efficiency of the assembly process between the housing 1 and the housing cover 2, a positioning assembly is further provided between the housing 1 and the housing cover 2 in this embodiment; wherein the positioning assembly includes a positioning boss 51 and a positioning groove 52 in a plug-in fit. Here, the positioning boss 51 can be designed on the housing 1, and the positioning groove 52 can be designed on the housing cover 2. Alternatively, the positioning groove 52 can be designed on the housing cover 2, and the positioning boss 51 can be designed on the housing 1, and this embodiment does not make an absolute limitation on this.

[0051] Finally, it should be noted that, in order to fasten the shell 1 and the shell cover 2 to each other and avoid unexpected loosening, a fastening component for maintaining the fastened fit between the shell 1 and the shell cover 2 is provided between the shell 1 and the shell cover 2 of this embodiment. The specific fastening component includes a screw 6 and a fastening hole for use in conjunction therewith.

[0052] For the above situation, an optional implementation is given in conjunction with the accompanying drawings. The fastening hole includes a threaded hole 71 formed on the housing 1 and suitable for threading with the screw 6, and a matching hole provided on the housing cover 2 and suitable for the screw 6 to pass through; wherein the matching hole includes a small inner diameter hole 72 and a large inner diameter hole 73 that are connected and connected; the large inner diameter hole 73 is located on the side of the housing cover 2 facing the housing 1, and the inner diameter of the small inner diameter hole 72 is slightly smaller than the outer diameter of the threaded portion 61 of the screw 6. Under this structure, when the screw 6 passes through the small inner diameter hole 72, it needs to be screwed in with a tool until the threaded portion 61 of the screw 6 enters the threaded hole 71 of the housing 1 to tighten it. When it is necessary to maintain the internal components of the circuit box, when the screw 6 is disassembled with a tool, the screw 6 is unscrewed from the threaded hole 71 of the housing 1. Since the inner diameter of the small inner diameter hole 72 is slightly smaller than the outer diameter of the threaded portion 61 of the screw 6, the screw 6 will not fall off the housing cover 2, thereby avoiding the problem of needing to specially store the screw 6 during maintenance.

[0053] In summary, for the junction box of this embodiment, not only the overall production and processing process is simplified, but also the assembly process between the various components can be simplified, thereby reducing costs on the basis of simplifying the structure.

[0054] Embodiment 2:

[0055] Based on the junction box of Example 1, this embodiment provides a motor, including: the junction box of Example 1.

[0056] Embodiment 3:

[0057] Based on the motor of Example 2, this embodiment provides a water pump, including: the motor of Example 2.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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 junction box, characterized in that: include: A shell and a shell cover adapted to be connected and matched to form a receiving cavity, and a sealing gasket disposed between the shell and the shell cover; in The housing or the housing cover is formed with an embedding groove for fixing the sealing gasket, and when the housing and the housing cover are assembled in place, the sealing gasket is clamped by the housing and the housing cover; and The receiving cavity is also provided with a clamp assembly for clamping the capacitor; The clamp assembly comprises at least one supporting rib arranged on the shell body for supporting the capacitor from the bottom and at least one pressing rib arranged on the shell cover for pressing the capacitor from the top.

2. The junction box according to claim 1, characterized in that: The embedding groove is arranged on the shell cover; The embedding groove at least comprises an annular groove arranged in an annular shape; and The sealing gasket comprises at least an annular body for being embedded in the annular groove.

3. The junction box according to claim 2, characterized in that: The embedding groove further includes at least one notch which is arranged on the side edge of the annular groove facing the receiving cavity and is communicated with the annular groove; and The sealing gasket also includes an extension body connected to the annular body and suitable for extending into the notch.

4. The junction box according to any one of claims 1 to 3, characterized in that: The shell body is integrally formed with two support ribs arranged at intervals, and the shell cover is integrally formed with two pressure ribs arranged at intervals; Each of the supporting ribs and each of the pressing ribs is an arc-shaped structure adapted to the outer wall of the capacitor.

5. The junction box according to any one of claims 1 to 3, characterized in that: A first connecting portion and a second connecting portion are provided in the housing; and The first connection portion is provided with a first positioning column matched with a low-power device, and a second positioning column matched with a high-power device; The second connecting portion is provided with a fastener for fixing the low-power device or the high-power device.

6. The junction box according to claim 1, characterized in that: A positioning assembly is also provided between the shell and the shell cover; The positioning assembly comprises a positioning boss and a positioning groove which are plug-fitted.

7. The junction box according to claim 1, characterized in that: A fastening assembly for maintaining a fastened fit between the shell and the shell cover is also provided between the shell and the shell cover; The fastening assembly comprises screws and fastening holes for use in conjunction with each other.

8. The junction box according to claim 7, characterized in that: The fastening hole comprises a threaded hole formed on the housing and suitable for matching with the screw thread, and a matching hole provided on the housing cover and suitable for the screw to pass through; The matching hole comprises a small inner diameter hole and a large inner diameter hole which are connected to each other; the large inner diameter hole is located on the side of the shell cover facing the shell body, and the inner diameter of the small inner diameter hole is slightly smaller than the outer diameter of the threaded part of the screw.

9. A motor, characterized in that: include: A motor as claimed in any one of claims 1 to 8.

10. A water pump, characterized in that: include: The motor as claimed in claim 9.

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