CN218276314U - High-speed motor wiring structure - Google Patents

Abstract

The utility model discloses a high-speed motor wiring structure, include: a binding post, a circuit board and a binding base; the number of the binding posts is three, one end of each binding post is respectively connected with the U wire, the V wire and the W wire of the motor coil, and the other end of each binding post is connected to the circuit board; the wire holder is four cores, wherein three cores are connected with the three wiring terminals; the high-speed motor comprises an inner shell and an outer shell, an inner shell binding post is further arranged on the inner shell, one end of the inner shell binding post is connected with the inner shell, the other end of the inner shell binding post is connected to the circuit board, and the inner shell binding post is connected with a fourth core of the wire holder. The utility model ensures the integrity of the air duct of the motor shell, avoids abnormal sound and improves the assembly efficiency; the wiring terminal is protected from contacting other metal parts, and the motor rotor assembly and the stator assembly are protected from being invaded by impurities such as dust; the failure rate of the motor is greatly reduced, and the service life of the motor is prolonged; the blocking to the air current can be effectively reduced, the generation of vortex is eliminated, and the noise is further reduced.

Description

A high-speed motor wiring structure

technical field

The utility model relates to a wiring structure of a high-speed motor, in particular to a small or miniature high-speed motor, especially a wiring structure suitable for a small or miniature high-speed brushless motor of a hair dryer.

Background technique

High-speed hair dryers have been pursued by more and more consumers, so the requirements for high-speed motors, which are the power part of high-speed hair dryers, are also getting higher and higher. At present, 6 terminal blocks (U1, V1, W1, U2, V2, W2) of the three sets of windings of the small or miniature high-speed motor used for hair dryer are directly connected to the circuit board 10 through the terminal post, and then set on the circuit board The connection socket 11 is drawn out, and the grounding shielding wire 30 needs to be inserted into the plug-in terminal 13 of the motor shell through a separate plug-in terminal 12, as shown in Fig. 1a, b. This structure has the following problems: a. The installation process is complicated, and it is necessary to complete two processes of terminal block installation and ground shielding wire installation, and the assembly efficiency is low. structure, it is easy to generate noise and reduce wind speed; c, the plug terminal 12 inserted into the plug-in end of the motor shell is usually higher than the end face of the motor shell, so that it is easy to produce abnormal noise after the motor is installed in the air duct of the hair dryer; d, usually to reduce motor noise , The motor casing of the high-speed hair dryer is further provided with a sound-absorbing and shock-absorbing sleeve, and the structure of the plug terminal 12 and the plug-in end of the motor casing will interfere with the positioning and installation of the sound-absorbing and shock-absorbing sleeve.

In view of this, the utility model provides a kind of brand-new solution.

Utility model content

The purpose of this utility model is to propose a high-speed motor wiring structure to solve the above-mentioned defects in the prior art, improve assembly efficiency and avoid abnormal noise without destroying the integrity of the air duct of the motor casing.

Another purpose of the utility model is to propose a high-speed motor wiring structure, which can realize the protection of the rotor assembly and stator assembly of the motor, prevent the intrusion of impurities such as dust, reduce the failure rate of the motor, and increase the service life of the motor.

Another purpose of the utility model is to propose a high-speed motor wiring structure, which can effectively reduce the obstruction of the wiring structure to the airflow, eliminate the generation of eddy currents, and further reduce noise.

The technical scheme adopted by the utility model is as follows: a high-speed motor wiring structure, including: a terminal, a circuit board, and a terminal block; wherein, the terminal is three, and one end is respectively connected with the U, V, and W lines of the motor coil, The other end is connected to the circuit board; the terminal block is four cores, three of which are connected to the three terminal posts; the high-speed motor includes an inner and outer double-layer shell, and further on the inner shell An inner housing terminal is provided, one end of the inner housing terminal is connected to the inner housing, the other end is connected to the circuit board, and is connected to the fourth core of the terminal block.

Preferably, the wiring structure of the high-speed motor further includes a terminal bracket, which is arranged between the inner housing of the motor and the circuit board to form a closed chamber, and the terminal and the terminal of the inner housing are both located in the cavity indoor.

Preferably, the terminal bracket is made of insulating material.

Preferably, the terminal bracket is a cylindrical structure matched with the bearing installation structure.

Preferably, the inner wall surface of the cylindrical structure of the terminal bracket is in clearance fit with the bearing installation structure.

Preferably, both the cylindrical structure of the terminal bracket and the circuit board are provided with a cutting structure.

Preferably, the cutting structure is in the shape of a concave groove.

Preferably, the cutting structures are plural, and the number is greater than two.

A high-speed motor wiring structure of the utility model has the advantages and effects of:

By changing the connection structure and connection method of the ground shielding wire, the integrity of the air duct of the motor casing is ensured, the abnormal sound is avoided, and the assembly efficiency is improved at the same time;

By adding the terminal bracket, on the one hand, it is used to position the terminal, on the one hand, it plays the role of insulation, protecting the terminal from contact with other metal parts, and on the other hand, it protects the motor rotor assembly and stator assembly from dust and other impurities Intrusion; greatly reduce the failure rate of the motor, and prolong the service life of the motor;

Through the optimization of the terminal structure, that is, the setting of the cutting structure, it can effectively reduce the obstruction of the airflow, eliminate the generation of eddy current, and further reduce the noise.

Description of drawings

Fig. 1a, b show the structural representation of prior art

Fig. 2 shows the structural representation of the utility model embodiment 1

Fig. 3 shows the terminal block and connection schematic diagram of Embodiment 1 of the present utility model

Fig. 4 shows the structural representation of the utility model embodiment 2

Fig. 5 a, b show the structural representation of the utility model embodiment 3

The numbers in the figure are as follows:

10-circuit board 11-wiring socket

12-plug terminal 13-plug end of motor shell

20-binding post 21-circuit board

22-Terminal seat 23-Inner shell terminal

24-Terminal post bracket 25-Cutting structure

30-Ground shielding wire

detailed description

Below in conjunction with accompanying drawing and embodiment, the technical solution of the utility model is described further.

Example 1

As shown in Figure 2, a high-speed motor wiring structure, the high-speed motor includes an inner and outer double-layer casing, and reinforced guide ribs are arranged between the double-layer casings to form an air duct. The high-speed motor also includes a rotor assembly (at least including Bearings, rotating shafts, rotor magnets), stator components (at least including motor coils, coil supports, and iron cores), terminal posts 20, circuit boards 21, and terminal blocks 22; wherein, there are three terminal posts 20, one end of which is respectively connected to the motor coil U, V, W lines are connected, and the other end is connected to the circuit board 21; the terminal block 22 is four-core, and three cores are connected to the three terminal posts; the inner housing is further provided with An inner housing terminal 23, specifically a groove is arranged on the inner housing, and one end of the inner housing terminal 23 is inserted into the groove (not shown in the figure) through an interference fit, and the grounding shielding wire is preset in the groove. In the slot, it can be electrically connected with the terminal post 23 of the inner case; the other end of the terminal post 23 of the inner case is connected to the circuit board and connected to the fourth core of the terminal block, as shown in FIG. 3 .

The grounding shielding wire is connected to the circuit board through the terminal post of the inner shell, and then connected to the additional core of the terminal block, so that the connection of all lines can be completed by one insertion, and the assembly efficiency is improved. At the same time, the integrity of the motor casing is guaranteed, thereby ensuring the integrity of the air duct and avoiding abnormal sound and noise.

Example 2

As shown in Figure 4, as another structural form of the present application, a high-speed motor wiring structure is based on the above-mentioned embodiment 1, further adding a terminal bracket 24, which is bonded or screwed to the inner casing of the motor Between the circuit board and the circuit board, a closed chamber is formed, and the terminal posts and the terminal posts of the inner casing are located in the chamber.

Preferably, the terminal bracket is made of insulating material.

Preferably, the terminal bracket is a cylindrical structure that cooperates with the bearing mounting structure (a bearing mounting seat in this embodiment), and the cylindrical structure of the terminal bracket and the circuit board are both provided with a cutting structure 25.

The inner wall surface of the cylindrical structure of the terminal bracket is in clearance fit with the bearing installation structure.

In this embodiment, the cutting structure 25 is in the shape of a groove extending from one end of the motor inner casing toward the circuit board and gradually widening. The grooves are plural in number and the number is greater than 2.

Example 3

As another structural form of the present application, a high-speed motor wiring structure, the terminal bracket 24 is a cylindrical structure that cooperates with the bearing mounting structure (a bearing mounting seat in this embodiment), and the wiring The plate 21 is circular to match the end face of the terminal bracket 24, as shown in Figs. 5a and b.

The inner wall surface of the cylindrical structure of the terminal bracket is in clearance fit with the bearing installation structure.

It should be noted that the high-speed motor wiring structure proposed by the utility model can be applied to related fields such as hair dryers, bladeless fans, negative pressure vacuum cleaners, hand dryers, and bathroom drying; the direction terms mentioned in this application , For example: up, down, left, right, front, back, inside, outside, side, etc., are only referring to the directions of the drawings. In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, Or integrally connected; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations. At the same time, those of ordinary skill in the art can understand that in each implementation manner of the utility model, many technical details are proposed in order to make readers better understand the utility model. However, even without these technical details and various changes and modifications based on the above embodiments, they can be made and implemented without departing from the scope of protection defined by the claims of the present invention.

Claims (9)

1. The utility model provides a high-speed motor wiring structure which characterized in that: the method comprises the following steps: a binding post, a circuit board and a binding base; the number of the binding posts is three, one end of each binding post is respectively connected with the U wire, the V wire and the W wire of the motor coil, and the other end of each binding post is connected to the circuit board; the wire holder is four-core, wherein three cores are connected with the three wiring terminals; the high-speed motor comprises an inner shell and an outer shell, an inner shell binding post is further arranged on the inner shell, one end of the inner shell binding post is connected with the inner shell, the other end of the inner shell binding post is connected to the circuit board, and the inner shell binding post is connected with a fourth core of the wire holder.

2. A high-speed motor wiring structure according to claim 1, characterized in that: the wiring structure of the high-speed motor further comprises a wiring terminal support, the wiring terminal support is arranged between the motor inner shell and the circuit board to form a closed cavity, and the wiring terminal of the inner shell are both positioned in the cavity.

3. A high-speed motor wiring structure according to claim 2, characterized in that: the terminal post bracket is made of insulating materials.

4. A high-speed motor wiring structure according to claim 2, characterized in that: the terminal support is a cylindrical structure matched with the bearing mounting structure.

5. The high-speed motor wiring structure according to claim 4, characterized in that: the inner wall surface of the cylindrical structure of the terminal support is in clearance fit with the bearing mounting structure.

6. A high-speed motor wiring structure according to claim 4 or 5, characterized in that: the cylindrical structure of the terminal support and the circuit board are both provided with cutting structures.

7. The high-speed motor wiring structure according to claim 6, wherein: the cutting structure is plural, and the number is more than 2.

8. A high-speed motor wiring structure according to claim 6, characterized in that: the cutting structure is in a groove shape which is inwards concave.

9. A high-speed motor wiring structure according to claim 8, characterized in that: the groove shape extends from one end of the motor inner shell to the circuit board direction and is gradually widened.

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