CN201113633Y - Motor Junction Box - Google Patents

Abstract

The utility model provides a motor junction box, includes the base that can install in motor body, and the upper cover that combines with this base, its characterized in that: the upper surface of the seat board of the base is provided with a wedge-shaped wall with a certain height; a middle ring with a high ring surface, which can be sleeved on the periphery of the wedge-shaped wall of the base, and the ring surface is provided with at least one wire outlet screw hole; at least one pipe joint, the external thread at one end of the pipe joint is screwed into the wire outlet screw hole of the middle ring, and the end surface of the external thread props against the outer surface of the wedge-shaped wall of the base, so that the middle ring is combined with the base. Through the structure, the wire outlet direction of the motor can be simply and conveniently changed by adjusting the relative position of the wire outlet screw hole of the middle ring and the base only by removing the upper cover and the pipe joint; and the middle ring can be conveniently provided with a rectifier.

Description

Motor Junction Box

technical field

The utility model relates to a junction box, in particular to a motor junction box, which has a middle ring installed on the base of the junction box, the middle ring can adjust the relative position of the outlet screw hole and the base by means of a pipe joint, so as to facilitate Change the outlet direction of the motor; at the same time, a rectifier can be conveniently installed in the middle ring.

Background technique

Motors are widely used in all industries and can be called the source of power. In the design of a general motor, externally connected electrical terminals are provided at appropriate positions on the outer shell, and these terminals are housed and protected in a box, which is generally called a junction box. The motor junction box of the prior art, as shown in Taiwan Patent No. 347166 and No. 513009, includes a bottom box that can be installed on the motor body, and an upper cover that is combined with the bottom box, and is assembled with each other by screws or snaps. . When in use, the electrical terminals are generally arranged or installed in the bottom box, and an outlet hole is provided at an appropriate position of the bottom box, so that external wiring can be connected to and connected to the electrical terminals. The above-mentioned motor junction box often has the following problems in actual operation:

1. The installation position of the motor is often limited by the environmental space, so it cannot be smoothly connected to the outside through the preset outlet hole. The improved method is to bend the wiring as much as possible, and the bottom box can also be disassembled to adjust the direction of its outlet hole. However, since the installation position of the bottom box relative to the motor has been limited, it can only be reversed from up to down or left to right. Adjustment.

2. When adjusting the outgoing line direction as above, the upper cover and the bottom box must be disassembled, and then the bottom box can be turned to adjust the outgoing line direction; after the adjustment, the screws must be locked one by one according to the disassembly method to secure the bottom box. It is particularly time-consuming to assemble the upper cover and the bottom box when installing it on the motor.

3. The bottom box of the prior art is integrated, so the wiring is limited to the space in the bottom box. When more complicated or bulky wiring is encountered, the space that the bottom box can accommodate is often insufficient and must be replaced. Large box body; but the setting of the installation position of the bottom box on the motor as mentioned above, this kind of box body replacement may not be feasible.

4. The pipe joint connected outside the outlet hole of the bottom box of the prior art to organize the wiring, after passing through the outlet hole, the pipe joint is fixed on the bottom with a nut and the external thread. However, when such a design stretches out the wiring, it must also undergo repeated screw disassembly and assembly, and the screws are easily lost during the process.

5. The fixed bottom plate of the rectifier in the prior art needs to extend a thin piece into the waterproof film on the bottom surface of the junction box. This will make the surface pressure of the waterproof film uneven and cause water leakage, thereby reducing the waterproof level, and even causing the entire motor to short circuit and burn out. Moreover, in this fixing method, the rectifier and the junction box can only be reassembled after the entire junction box is removed.

Utility model content

In order to solve the many shortcomings of the above motor junction box, the utility model provides another motor junction box, which has a base that can be installed on the motor body, and an upper cover combined with the base, wherein the seat plate of the base A wedge-shaped wall with a height is formed on the upper surface; a middle ring with a high-height ring surface can be sleeved on the periphery of the wedge-shaped wall of the above-mentioned base, and at least one outlet screw hole is arranged on the ring surface; at least one pipe joint, with one end The outer thread of the outer thread is screwed into the outlet screw hole of the middle ring, and the end surface of the outer thread is against the outer surface of the wedge-shaped wall of the base, thereby combining the middle ring with the base.

Compared with the existing motor junction box, the motor junction box with the above structure of the present utility model has at least the following advantages, so as to solve the corresponding shortcomings:

(1) The middle ring of the present utility model can be placed in an appropriate position along the periphery of the wedge-shaped wall of the base to find out the best outlet direction. Therefore, it is possible to solve the problem that the existing wire outlet hole of the motor junction box cannot be smoothly connected to the outside due to the limitation of the environmental space.

(2) The utility model only needs to loosen the pipe joint, and can easily change the direction of the outlet of the motor by adjusting the relative position of the outlet screw hole of the middle ring and the base. Therefore, it can solve the problem that the existing motor junction box must repeatedly remove the bottom box to adjust the outgoing line direction.

(3) The middle ring of the utility model can be conveniently removed from the base according to the requirement of the wiring space so as to expand its wiring space. Therefore, there is no problem of insufficient wiring space caused by the integrated bottom box of the conventional motor junction box.

(4) The pipe joint of the present utility model is directly screwed in the outlet screw hole of the middle ring, so when adjusting the direction of the outlet or extending the wiring outwards, it is only necessary to control the screwing and dismounting of the pipe joint. There is no problem of repeated disassembly and assembly of the nut of the existing junction box, so the possibility of parts loss can also be reduced.

(5) Any ring surface of the utility model that does not have outlet screw holes can be provided as a mounting surface for a rectifier, and its installation method will not damage the ring surface, that is, it will not affect the waterproof level of the junction box, which can solve the problem of The existing rectifier has the shortcomings of water leakage and motor short circuit caused by the extension of the fixed piece into the junction box.

Description of drawings

FIG. 1 is an exploded perspective view of components of a motor junction box of the present invention.

Fig. 2 is a top view of the combined structure of the motor junction box of the present invention.

3 is an exploded perspective view of components of a motor junction box according to another embodiment of the present invention, showing a rectifier installed on one of the ring surfaces of the middle ring.

Explanation of reference symbols:

10 base

11 seat plate

12 Terminals

13 wedge wall

14 screw holes

15 mounting holes

20 Central

21 Torus

22, 23 Outlet screw holes

24 longitudinal groove

30, 32 pipe joints

301, 321 external thread

303, 323 hex nut

305, 325 hex nut

40 cover

41 Mounting hole

42 screws

50 Wiring

52 Nut

54 copper sheet

56 rubber ring

60 rectifier

62 Fixed piece

64 Fixed elements

66 mounting holes

Detailed ways

With reference to the following detailed description of a preferred embodiment of the utility model and accompanying drawings, the technical contents and purpose effects of the utility model will be further understood.

A motor junction box of the present utility model, its preferred embodiment is shown in Figure 1, including a base 10, a middle ring 20, two pipe joints 30, 32 and an upper cover 40, wherein:

On the base 10, several terminals 12 are vertically arranged on the seat plate 11, and are equipped with nuts 52 and copper sheets 54 for wiring, which is a conventional design of a motor junction box. The base 10 is characterized in that a wedge-shaped wall 13 with a suitable height is formed on the upper surface of the seat plate 11 , and the wedge-shaped wall 13 is retracted on the seat plate 11 in a preferred embodiment of the present invention.

The middle ring 20 has a high annular surface 21, which can be nested on the periphery of the wedge-shaped wall 13 of the above-mentioned base 10; at least one outlet screw hole is arranged on the annular surface 21, or as a preferred embodiment of the present utility model, two outlets Screw holes 22,23.

Pipe joints 30, 32, one end of which is an external thread 301, 321, preferably other external pipe parts outside the external thread 301, 321 are provided with facilities for tools or hand operation, such as hexagonal nuts as shown in Figure 1 303, 305, 323, 325.

The upper cover 40 is used to cover the upper opening of the base 10. The cover is provided with mounting holes 41 at the four corners of the cover as in a preferred embodiment of the present utility model, and screws 42 are inserted into each part of the base 10 to be screwed. The screw holes 14 are used to fasten the upper cover 40 directly with the base 10 .

Refer to Figure 1 and Figure 2. In the above-mentioned motor junction box, the base 10 is screwed into the preset installation hole 15 by means of a combination such as a screw, so that the base 10 is installed on the motor body. Either one of the pipe joints 30 and 32 (only the pipe joint 32 is shown in Figure 2), screw its external thread 321 into one of the outlet screw holes 23 of the middle ring 20, and adjust the outlet screw hole of the middle ring 20 according to the installation environment of the motor 22 and 23 are placed on the periphery of the wedge-shaped wall 13 of the base 10 after facing the best outgoing direction, and then the pipe joint 32 is screwed deeper, so that the end surface of the external thread 321 is against the outer surface of the wedge-shaped wall 13 of the base, In this way, the middle ring 20 is fixedly combined with the base 10 and the direction of wire outlet is determined. The wiring 50 is then connected to the appropriate terminal 12 through the nipple 32 and secured with a nut 52 and copper sheet 54 (FIG. 1) for wiring. After all the wiring is completed, finally cover the upper cover 40 and fix it with the screw 42 shown in FIG. 1 through the screw hole.

In the above-mentioned motor junction box of the present invention, a rubber ring 56 is further included between the joint surfaces of the middle ring 20 , the upper cover 40 and the base 10 to enhance the airtightness and waterproof effect of the combination of the above components. The above-mentioned rubber ring 56 also includes a rubber pad having the same properties and functions in a possible implementation mode.

The above-mentioned motor junction box of the utility model utilizes the way that the pipe joint is screwed into the outlet screw hole of the middle ring and resists the wedge-shaped wall. It only needs to remove the upper cover and loosen the pipe joint to adjust the position of the middle ring as required. The relative position of the outlet screw hole and the base makes it easy to change the outlet direction of the motor. In addition, according to wiring requirements, the middle ring can also be removed conveniently to provide a larger wiring space. Therefore, the utility model can provide various electrical work options with different needs under one specification.

FIG. 3 is an exploded perspective view of components of a motor junction box according to another embodiment of the present invention. This embodiment shows that any annular surface 21 that does not have outlet screw holes 22, 23 in the middle ring 20 can be provided as a mounting surface for a rectifier. The installation method is shown in FIG. , use a fixing element 64 (such as a self-tapping screw) to pass through the mounting hole 66 of the fixing piece 62 and screw it into the longitudinal groove 24 on the ring surface 21, so that the rectifier 60 is installed on the ring surface 21. Since the fixing element 64 does not penetrate the annulus 21 in the above-mentioned installation process, it will not damage the waterproofness of the annulus 21, that is, it will not affect the waterproof level of the junction box of the present utility model; but the above-mentioned installation method can solve the problem of the existing rectifier Disadvantages of water leakage and motor short circuit caused by the extension of the fixed piece into the junction box. Therefore, the above installation method has at least the following advantages:

1. There is no need for additional drilling and tapping, so the waterproof effect of the entire junction box will not be damaged.

2. There is no need for drilling and tapping, so the processing cost can be saved.

3. The grooves are arranged on the other three surfaces except the surface where the outlet hole is located, so that the user can choose the installation position of the rectifier arbitrarily.

4. The above structure can save the redundant work of having to remove the base when installing the rectifier.

The above detailed description is a specific description of a feasible embodiment of the present utility model, but this embodiment is not used to limit the protection scope of the present utility model, and any work done without departing from the technical idea of the present utility model Any modification or variation shall be included in the patent scope of this application.

Claims (7)

1. A motor junction box comprising a base provided with a mounting hole so as to be installed on the motor body through a coupling element; an upper cover is provided with a mounting hole so as to be combined with the base through a coupling element; it is characterized in that: The above-mentioned base forms a wedge-shaped wall with a height on the upper surface of the seat plate; A middle ring, which can be placed on the periphery of the wedge-shaped wall of the above-mentioned base, has a ring surface of a certain height, and at least one outlet screw hole is provided on the ring surface; at least one pipe joint, one end of which is externally threaded; The pipe joint is screwed into the outlet screw hole of the middle ring, and the external thread end surface of the pipe joint is pressed against the outer surface of the wedge-shaped wall of the base, so that the middle ring is combined with the base. 2. The motor junction box according to claim 1, wherein the wedge-shaped wall of the base is formed by shrinking along the shape of the base. 3. The motor junction box according to claim 1, wherein two outlet screw holes are provided on the ring surface of the middle ring. 4. The motor junction box according to claim 1, characterized in that, any ring surface of the middle ring without threaded holes is a mounting surface for a rectifier. 5. The motor junction box according to claim 4, wherein the rectifier is screwed in the longitudinal groove on the ring surface with a fixing element directly passing through the mounting hole of the fixing piece, and the rectifier is installed on the said ring. 6. The motor junction box according to claim 5, wherein the fixing element is a self-tapping screw. 7. The motor junction box according to claim 1, characterized in that, between the joint surfaces of the middle ring, the upper cover and the base, there is also one of a rubber ring and a rubber pad.

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