A spraying motor for a rail transit vehicle wiper

Abstract

This utility model relates to the field of rail transit equipment technology, specifically disclosing a spray motor for a windshield wiper of a rail transit vehicle, including a motor upper cover, a motor body, a motor lower cover, a motor base, and an impeller. The motor upper cover is configured as a container with one open end for mounting the motor body; the opening of the motor upper cover is sealed by the motor base; the motor lower cover is sealed to the motor base, and a cavity is provided between the motor base and the motor lower cover; the output shaft of the motor body passes through the motor base and is drivenly connected to the impeller disposed in the cavity; the motor lower cover is also provided with a drain outlet and a water inlet. This utility model has a simple overall structure, is convenient and practical, and has high reliability. In particular, through various good sealing settings, it prevents washing liquid from entering the motor, improving its reliability. Furthermore, the impeller of this utility model is less prone to clogging and damage compared to the impeller pump design.

Description

Technical Field

[0001] This utility model belongs to the field of rail transit equipment technology, specifically relating to a spray motor for a windshield wiper of a rail transit vehicle. Background Technology

[0002] Currently, the spray motors used in windshield wipers of rail transit vehicles all employ an impeller pump structure. When air is present in the impeller cavity or water supply pipe, the spray motor may fail to pump water, preventing the windshield from being cleaned when needed, thus impairing the driver's visibility and affecting driving safety. In addition, the spray motors used in windshield wipers of rail transit vehicles are directly connected to the vehicle's power supply via a switch. When the washer fluid freezes or the spray pipe becomes blocked, it can easily damage the impeller or cause the impeller cavity seal to fail, allowing washer fluid to enter the motor and cause a short circuit, resulting in the vehicle tripping and affecting driving safety.

[0003] Therefore, it is necessary to propose a spray motor for windshield wipers of rail transit vehicles that is simple in structure, easy to use, and highly reliable to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of this utility model is to provide a spray motor for windshield wipers of rail transit vehicles that is simple in structure, easy to use, and highly reliable. The technical solution is as follows:

[0005] A spray motor for a windshield wiper of a rail transit vehicle includes a motor upper cover, a motor body, a motor lower cover, a motor base, and an impeller;

[0006] The motor cover is configured as a container with one open end for mounting the motor body;

[0007] The opening of the motor cover is sealed by the motor base;

[0008] The lower cover of the motor is sealed to the motor base, and a cavity is provided between the motor base and the lower cover of the motor;

[0009] The output shaft of the motor body passes through the motor base and is connected to the impeller installed in the cavity via a transmission.

[0010] The motor's lower cover is also equipped with a drain outlet and a water inlet.

[0011] Preferably, the lead wire of the motor body passes through the motor cover and is connected to a connector for connecting to external wires, and the lead wire and the motor cover are coated with sealant.

[0012] Preferably, the output shaft of the motor base and the motor body is sealed by a skeleton oil seal ring.

[0013] Preferably, the lower cover of the motor and the motor base are sealed by an O-ring.

[0014] Preferably, the drain outlet of the motor lower cover adopts an internal thread interface and is connected to a drain connector, which is connected to an external spray pipe.

[0015] Preferably, the upper cover and lower cover of the motor are fixed to the motor base by fastening screws.

[0016] Preferably, the impeller is a self-priming centrifugal impeller, with the inner side of the impeller having a spiral self-priming structure and the outer side having a scattering curved surface structure. When the impeller rotates at high speed, the bottom of the impeller can draw in the washing liquid and throw the drawn-in washing liquid to the surrounding area of ​​the impeller.

[0017] Preferably, the water inlet is located at the bottom of the motor's lower cover, and the drain outlet is located on the side of the impeller.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] A spray motor for a windshield wiper in rail transit vehicles includes an upper motor cover, a motor body, a lower motor cover, a motor base, and an impeller. The upper motor cover is configured as a container with one open end for mounting the motor body; the opening of the upper motor cover is sealed by the motor base; the lower motor cover is sealed to the motor base, and a cavity is provided between the motor base and the lower motor cover; the output shaft of the motor body passes through the motor base and is drively connected to the impeller disposed in the cavity; the lower motor cover also has a drain outlet and a water inlet. This utility model has a simple overall structure, is convenient and practical, and has high reliability. In particular, through various excellent sealing designs, it prevents washing liquid from entering the motor, further improving its reliability. Compared with the impeller pump design, the impeller of this utility model is less prone to clogging and damage.

[0020] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a spray motor for a windshield wiper of a rail transit vehicle according to the present invention;

[0022] Figure 2 for Figure 1 Internal cross-sectional view of the spray motor for the windshield wipers of medium-speed rail vehicles;

[0023] Figure 3 for Figure 2 Schematic diagram of the middle impeller;

[0024] Figure 4for Figure 3 A sectional view.

[0025] In the diagram: 1. Drain connector; 2. Fastening screw; 3. Motor lower cover; 4. Connector; 5. Motor upper cover; 6. Motor body; 7. Frame oil seal ring; 8. Motor base; 9. O-ring seal; 10. Impeller. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example:

[0027] See Figure 1 and Figure 2 A spray motor for a windshield wiper in rail transit vehicles is disclosed. The spray motor is mounted on a water tank and pumps detergent solution from the tank to the windshield via a spray pipe when needed, cleaning the windshield and providing the driver with a clear view. The motor includes an upper cover 5, a motor body 6, a lower cover 3, a base 8, and an impeller 10. The upper cover 5 is an open container for mounting the motor body 6; the opening of the upper cover 5 is sealed by the base 8. The lower cover 3 is sealed to the base 8, and a cavity is provided between the base 8 and the lower cover 3. The output shaft of the motor body 6 passes through the base 8 and is connected to the impeller 10 located in the cavity. The lower cover 3 also has a drain outlet and a water inlet.

[0028] The control part of the spray motor in this embodiment consists of a spray motor MCU control circuit, a spray motor switch circuit, a spray motor drive circuit, and a current detection circuit. When the spray switch is closed, the MCU receives the closing command of the control switch and sends a command to drive the spray motor to operate. The motor body 6 drives the impeller 10 to rotate at high speed. The washing liquid enters from the bottom of the impeller through the spiral impeller on the inner side of the impeller. Under the action of centrifugal force, it is thrown to the outer side of the impeller by the scattering structure and discharged from the outlet of the motor lower cover 3. When the overcurrent detection circuit detects that the spray motor is overcurrent, it stops the spray motor from operating.

[0029] The lead wire of the motor body 6 passes through the motor cover 5 and is connected to a connector 4. This avoids direct connection to the vehicle's power supply via a switch, preventing short circuits caused by impeller damage or impeller cavity seal failure due to freezing of the washing liquid or blockage of the spray pipe, which could lead to the vehicle tripping and affecting driving safety. For connection to external wires, the lead wire is coated with sealant between itself and the motor cover 5 to prevent external impurities or water droplets from entering the motor body 6 and causing short circuits.

[0030] The output shaft of the motor base 8 and the motor body 6 are sealed by a skeleton oil seal ring 7 to prevent washing liquid from entering the motor body 6 and causing risks such as short circuit.

[0031] The motor lower cover 3 and the motor base 8 are sealed by an O-ring 9 to prevent the washing liquid from leaking.

[0032] The drain outlet of the motor lower cover 3 adopts an internal thread interface so as to connect with various drain connectors 1, which are connected to the external spray pipes.

[0033] The upper cover 5 and the lower cover 3 of the motor are fixed to the motor base 8 by fastening screws 2.

[0034] See Figure 3 and Figure 4 The impeller 10 is a self-priming centrifugal impeller. The inner side of the impeller 10 has a spiral self-priming structure, and the outer side has a scattering curved surface structure. When the spray motor body 6 rotates at high speed, it drives the impeller 10 to rotate at high speed. The bottom of the impeller 10 can suck in the washing liquid, which is thrown to the outside of the impeller by the scattering structure under the action of centrifugal force and discharged from the outlet of the motor cover. It is then pumped to the front window glass through the spray pipeline.

[0035] The water inlet is located at the bottom of the motor lower cover 3, and the drain outlet is located on the side of the impeller.

[0036] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spray motor for a windshield wiper in rail transit vehicles, characterized in that, Includes motor top cover (5), motor body (6), motor bottom cover (3), motor base (8) and impeller (10); The motor cover (5) is configured as a container with one end open for mounting the motor body (6). The opening of the motor cover (5) is sealed by the motor base (8); The motor lower cover (3) is sealed to the motor base (8), and a cavity is provided between the motor base (8) and the motor lower cover (3); The output shaft of the motor body (6) passes through the motor base (8) and is connected to the impeller (10) set in the cavity for transmission. The motor lower cover (3) is also provided with a drain outlet and a water inlet.

2. A spray motor for a windshield wiper in a rail transit vehicle according to claim 1, characterized in that, The lead wire of the motor body (6) passes through the motor cover (5) and is connected to a connector (4) for connecting with external wires. The lead wire and the motor cover (5) are coated with sealant.

3. A spray motor for a windshield wiper in a rail transit vehicle according to claim 1, characterized in that, The output shafts of the motor base (8) and the motor body (6) are sealed by a skeleton oil seal ring (7).

4. A spray motor for a windshield wiper in a rail transit vehicle according to claim 1, characterized in that, The motor lower cover (3) and the motor base (8) are sealed by an O-ring (9).

5. A spray motor for a windshield wiper in a rail transit vehicle according to claim 1, characterized in that, The drain outlet of the motor lower cover (3) adopts an internal thread interface and is connected to the drain connector (1), which is connected to the external spray pipe.

6. A spray motor for a windshield wiper in a rail transit vehicle according to claim 1, characterized in that, The upper cover (5) and lower cover (3) of the motor are fixed to the motor base (8) by fastening screws (2).

7. A spray motor for a windshield wiper of a rail transit vehicle according to any one of claims 1-6, characterized in that, The impeller (10) is a self-priming centrifugal impeller. The inner side of the impeller (10) has a spiral self-priming structure, and the outer side has a scattering curved surface structure. When the impeller (10) rotates at high speed, the bottom of the impeller (10) can suck in the washing liquid and throw the sucked washing liquid to the surrounding area of ​​the impeller.

8. A spray motor for a windshield wiper in a rail transit vehicle according to claim 7, characterized in that, The water inlet is located at the bottom of the motor cover (3), and the drain outlet is located on the side of the impeller (10).

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