Automobile windshield wiper water spray motor

Abstract

The invention discloses a car windshield wiper water spraying motor, which belongs to the field of automobile parts manufacturing and has the advantage of preventing air binding. The technical scheme is as follows: the motor comprises a shell, blades, a motor and a cover body, wherein the cover body is connected to the rear of the shell, the blades are arranged at the head of the shell, a liquid suction pipe is arranged at the head of the shell, a liquid outlet pipe is arranged on the outer wall of the shell near one end of the liquid suction pipe, the inner wall of the liquid suction pipe is tapered, the diameter of the inner wall of the liquid suction pipe near one end of the shell is larger than the diameter of the end away from the shell, a first opening and a second opening arranged along the length direction of the liquid suction pipe are arranged at one end of the liquid suction pipe away from the shell, the length of the second opening is larger than the length of the first opening, an impeller extending toward the liquid suction pipe is arranged at one end of the blade away from the motor, and the impeller extends to a position between the end of the second opening and the end of the first opening.

Description

Technical Field

[0001] The invention relates to the field of automobile parts manufacturing, and in particular to an automobile windshield wiper water spraying motor. Background Art

[0002] The car wiper water spray motor is mainly used to cooperate with the wiper action to clean the car glass. The car water spray motor has a simple structure and relatively simple technical content. There are many car water spray motor manufacturers that provide supporting services for car manufacturers, and the market competition is very fierce.

[0003] The water spray motor mainly includes a shell, a motor, and blades. The motor drives the blades to rotate. The blades are arranged at the head position of the shell. A liquid outlet pipe is arranged on the side of the shell. The outside of the liquid outlet pipe is connected to the pipeline. The liquid is passed from the liquid outlet pipe into the pipeline through the rotation of the blades, and then the water spraying operation is carried out through the nozzle.

[0004] When there is air at the head of the shell, the air density is very small and cannot be thrown to the outer edge of the blade, which will block part or all of the flow path of the blade, interrupting the drainage, which is the phenomenon of air binding. In particular, in order to prevent the backflow of liquid, the water spray motor will be equipped with a one-way valve to prevent backflow on the pipeline. Due to the setting of the one-way valve, when air binding occurs, the one-way valve cannot be opened at all, resulting in the inability to transport liquid.

[0005] During the customer's use, when the original spray was in use, after the cleaning liquid in the spray pot was sprayed out, air entered the pump, and it could not work normally after refilling. The user mistakenly believed that "after eliminating the air blockage, the spraying was normal" that the spray pump had failed, resulting in a large number of after-sales claims, which had an adverse negative impact on automobile manufacturers and manufacturers.

[0006] And when there is no liquid in the shell, the blades are prone to wear and produce loud noise. Summary of the invention

[0007] The object of the present invention is to provide a car windshield wiper water spray motor, which has the advantage of preventing air binding.

[0008] The above technical objectives of the present invention are achieved through the following technical solutions: a car wiper water spray motor, comprising a shell, blades, a motor, and a cover body, the cover body is connected to the rear of the shell, the blades are arranged at the head position of the shell, the inner wall of the suction tube is conical, the diameter of the inner wall of the suction tube close to one end of the shell is larger than the diameter of the end away from the shell, the end of the suction tube away from the shell is provided with a first opening and a second opening arranged along the length direction of the suction tube, the length of the second opening is greater than the length of the first opening, the end of the blade away from the motor is provided with an impeller extending toward the suction tube, and the impeller extends to a position between the end of the second opening and the end of the first opening.

[0009] By adopting the above technical solution, the pipette is inserted into the liquid, and the impeller is driven by the motor to rotate to generate centrifugal force, so that the liquid in contact with the impeller also generates centrifugal force, and the liquid flows toward the inner wall of the pipette. Since the inner wall of the pipette is conical, the liquid moving toward the inner wall of the pipette generates an upward component force, and through the continuous operation of the impeller, the liquid continues to move upward along the inner wall of the pipette to the blade position, so that the blade position is filled with liquid, thereby avoiding the occurrence of air binding. The liquid is then discharged from the liquid outlet pipe through the rotation of the blades. Since the blades rotate to throw away the liquid, the liquid discharged from the liquid outlet pipe has a large impact force, which is convenient for flushing the one-way valve, so there is no need to perform preliminary water injection on the blade position separately.

[0010] Furthermore, it also includes a sealing head, which includes a sealing cylinder, a sealing ring body, a sealing ring, and two supporting feet. The sealing ring body is fixedly connected to the outer side wall of one end of the sealing cylinder, and the sealing ring is arranged on the outer circumferential side wall of the sealing ring body. The two supporting feet form a straight line with the center of the sealing cylinder, and the sealing cylinder is located between the two supporting feet. One end of the two supporting feet is connected to the sealing ring body, and the length of the supporting feet is slightly longer than the length of the sealing cylinder. The end of the motor is provided with a boss that is plugged into the sealing cylinder, and the motor shaft passes through the boss. The two supporting feet abut against the end of the motor. The head of the shell is provided with a suction pipe, and the outer side wall of the shell near one end of the suction pipe is provided with a liquid outlet pipe. The interior of the shell is provided with a pumping chamber, a sealing chamber, and a motor chamber in sequence from the head to the tail. The inner wall of the pumping chamber is provided with a pumping step, and the inner wall of the sealing chamber is provided with a sealing step. The motor shaft passes through the sealing cylinder and is connected to the blade. The blade is located in the pumping chamber, the sealing head is located in the sealing chamber, and the motor is located in the motor chamber.

[0011] By adopting the above technical scheme, the supporting foot faces the motor, and the end of the motor shaft passes through the sealing tube, so that the supporting foot abuts against the end of the motor, the boss is inserted into the sealing tube, and the blade is then inserted and fixed to the end of the motor shaft. The supporting foot and the abutting position of the motor are used as a fulcrum to adjust the left and right position of the motor, so that a good gap is maintained between the blade and the sealing ring body to avoid friction with the sealing ring body when the blade rotates, thereby improving the installation effect, and then the whole is installed in the shell, the blade is located in the pumping cavity, the sealing head is located in the sealing cavity, the motor is located in the motor cavity, the sealing ring body abuts against the sealing step, and the sealing ring provides a sealing effect in the sealing cavity, and then the cover body is fixed, and the cover body abuts against the tail of the motor to achieve effective fixation.

[0012] Furthermore, the sealing head also includes two limit feet, the limit feet and the center of the sealing tube form a straight line, the sealing tube is located between the two limit feet, one end of the two limit feet is connected to the sealing ring body, the length of the limit feet is slightly smaller than the length of the sealing tube, and the two limit feet, two supporting feet and the sealing tube form a cross shape.

[0013] By adopting the above technical solution, the outer edges of the limiting feet and the supporting feet can contact the inner wall of the shell, thereby comprehensively improving the limiting effect on the sealing head, so that the installed sealing head can have a good fixing effect.

[0014] Furthermore, a connecting wing is integrally provided between the two limiting feet, the two supporting feet and the sealing cylinder, close to one end of the sealing ring body.

[0015] By adopting the above technical solution, the connecting wing effectively improves the connection strength of the supporting foot and the limiting foot, and reduces the phenomenon of deformation and breakage.

[0016] Furthermore, the connection position between the inner wall of the sealing cylinder and the boss is in a flared shape.

[0017] By adopting the above technical solution, the flared structure reduces the restrictive effect on the boss, and while the boss and the sealing cylinder are centrally positioned, it is easy to adjust the installation angle of the motor.

[0018] Furthermore, a separator ring is provided on the inner wall of the sealing cylinder, and the separator ring forms a mounting portion at one end of the inner wall of the sealing cylinder close to the sealing ring body and a sealing portion at one end away from the sealing ring body. A sealing gasket is provided in the sealing portion, and the sealing gasket contacts the boss.

[0019] By adopting the above technical solution, when the sealing cylinder is connected to the boss, the sealing gasket is squeezed, so that it can better contact and seal with the boss, effectively preventing liquid from flowing into the sealing cylinder and damaging the motor.

[0020] Furthermore, the sealing gasket is provided with an annular extension portion at one end close to the boss, the extension portion is provided with a notch, and the extension portion abuts against the boss.

[0021] By adopting the above technical solution, the extension part improves the interference effect between the sealing gasket and the boss, and the notch facilitates the extension part to be squeezed and deformed, thereby improving the gap filling ability and the overall sealing effect.

[0022] Furthermore, the blades are sequentially provided with extended mounting posts close to the motor, and the extended mounting posts are inserted into the mounting portion and connected to the motor shaft.

[0023] By adopting the above technical solution, there are no blades on the extended mounting column, and the mounting portion increases the distance between the position where the liquid flows more and the sealing position of the sealing tube, thereby reducing liquid seepage and improving the overall sealing effect.

[0024] Furthermore, an inclined transition step is provided at one end of the sealing step away from the pumping step, and a bayonet adapted to interfere with the sealing step and the transition step is provided at one side of the supporting foot and the limiting foot away from the sealing cylinder.

[0025] By adopting the above technical solution, after the sealing head is installed, the bayonet is clamped on the sealing step and the transition step, thereby enhancing the limiting effect on the sealing head and reducing the shaking of the sealing head.

[0026] Furthermore, a support column that contacts the tail of the motor is provided inside the cover body, and a limiting convex strip that supports the motor housing is provided inside the shell.

[0027] By adopting the above technical solution, the limiting convex strip is convenient for limiting the motor, so as to avoid a large range of tilting during the installation of the motor, which may cause a change in the position of the sealing head and the motor.

[0028] In summary, the present invention has the following beneficial effects:

[0029] 1. Before assembling the blades and the shell, the installation status of the blades can be adjusted to improve the accuracy after installation;

[0030] 2. The sealing head can achieve good sealing effect and increase the service life of the motor;

[0031] 3. Improved installation precision effectively ensures smooth rotation of blades and reduces blade wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a stereogram of this embodiment;

[0033] Figure 2 is an exploded view of this embodiment;

[0034] Figure 3 is a cross-sectional view of this embodiment.

[0035] In the figure, 1, shell; 11, suction tube; 111, first opening; 112, second opening; 12, liquid outlet pipe; 13, pumping step; 131, pumping chamber; 14, sealing step; 141, sealing chamber; 15, transition step; 16, motor chamber; 17, limiting convex strip; 2, blade; 21, extension mounting column; 22, impeller; 3, motor; 31, motor shaft; 32, boss; 4, cover; 41, support column; 5, sealing head; 51, sealing cylinder; 52, sealing ring body; 521, ring groove; 53, sealing ring; 54, supporting foot; 55, limiting foot; 56, connecting wing; 57, separating ring; 571, mounting portion; 572, sealing portion; 58, sealing gasket; 581, extension portion; 582, notch; 59, bayonet. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0037] A car windshield wiper water spraying motor, comprising a housing 1, a blade 2, a motor 3, and a cover 4, wherein the cover 4 is connected to the rear of the housing 1, the blade 2 is plugged and fixed to the end of a motor shaft 31 on the motor 3, the motor 3 and the blade 2 are both installed in the housing 1, the head of the housing 1 is integrally provided with a liquid suction pipe 11, the outer wall of the housing 1 close to one end of the liquid suction pipe 11 is integrally provided with a liquid outlet pipe 12, the inside of the housing 1 is sequentially provided with a pumping chamber 131, a sealing chamber 141, and a motor chamber 16 from the head to the tail, the inner wall of the pumping chamber 131 is provided with a pumping step 13, the inner wall of the sealing chamber 141 is provided with a sealing step 14, the blade 2 and the motor 3 are connected to the motor 3, and the motor 3 and the blade 2 are connected to the motor 3. After the machine 3 is installed, the blade 2 is located in the pumping chamber 131, the motor 3 is located in the motor chamber 16, and a sealing head 5 is provided in the sealing chamber 141 to isolate the blade 2 and the motor 3. The sealing head 5 can prevent the liquid at the position of the blade 2 from entering the motor 3. During operation, the motor 3 drives the blade 2 to rotate, and the blade 2 can suck the liquid into the pumping chamber 131 through the suction tube 11, and then the liquid in the pumping chamber 131 is discharged through the liquid outlet pipe 12 through the centrifugal force, thereby realizing the function of conveying liquid. The conveyed liquid is sprayed onto the automobile glass through an external nozzle, thereby realizing the washing function of the automobile glass.

[0038] Moreover, the inner wall of the liquid suction pipe 11 is tapered, and the diameter of the inner wall of the liquid suction pipe 11 at one end close to the shell 1 is larger than the diameter of the end away from the shell 1. The end of the liquid suction pipe 11 away from the shell 1 is provided with a first opening 111 and a second opening 112 arranged along the length direction of the liquid suction pipe 11, and the length of the second opening 112 is larger than the length of the first opening 111. The end of the blade 2 away from the motor 3 is provided with an impeller 22 extending toward the liquid suction pipe 11, and the impeller 22 extends to a position between the end of the second opening 112 and the end of the first opening 111. When water needs to be pumped, the liquid suction pipe 11 extends into the liquid storage tank, and the first opening 111 and the second opening 112 are provided to ensure that there is a certain space for liquid to flow into the liquid suction pipe 11 and contact with the impeller 22. In the process of sucking liquid, the liquid suction pipe 11 is inserted into the liquid, and the impeller 22 is driven by the motor 3 to rotate The rotation generates centrifugal force, which also generates centrifugal force for the liquid in contact with the impeller 22, and the liquid flows toward the inner wall of the suction tube 11. Since the inner wall of the suction tube 11 is conical, the liquid moving toward the inner wall of the suction tube 11 generates an upward component of force, and through the continuous operation of the impeller 22, the liquid continues to move upward along the inner wall of the suction tube 11 into the pumping chamber 131, so that the pumping chamber 131 is filled with liquid, and then through the rotation of the blade 2, the liquid is discharged from the liquid outlet pipe 12 to realize the water spraying operation. Therefore, the air binding phenomenon is effectively avoided during the working process, and the liquid is discharged from the liquid outlet pipe 12 through the rotation of the blade 2. Since the blade 2 rotates to throw away the liquid, the liquid discharged from the liquid outlet pipe 12 has a large impulse, which is convenient for flushing the one-way valve, so there is no need to perform preliminary water injection work at the position of the blade 2 separately.

[0039] The sealing head 5 includes a sealing cylinder 51, a sealing ring body 52, a sealing ring 53, and two supporting feet 54. The sealing ring body 52 is fixedly connected to the outer side wall of one end of the sealing cylinder 51. An annular groove 521 for installing the sealing ring 53 is arranged on the outer circumferential side wall of the sealing ring body 52. ​​The two supporting feet 54 form a straight line with the center of the sealing cylinder 51. The sealing cylinder 51 is located between the two supporting feet 54. One end of the two supporting feet 54 is connected to the sealing ring body 52. ​​The length of the supporting feet 54 is slightly longer than the length of the sealing cylinder 51. A boss 32 plugged into the sealing cylinder 51 is provided at the end of the motor 3. The motor shaft 31 passes through the boss 32. During the installation process, the motor shaft 31 is passed through the sealing cylinder 51 to connect with the blade 2. At this time, the boss 32 is inserted into the sealing cylinder 51, and the two supporting feet 54 can abut against the end of the motor 3. The blade 2 is then plugged and fixed to the end of the motor shaft 31, thereby The preliminary connection between the blade 2, the sealing head 5 and the motor 3 is achieved. After the preliminary connection is completed, the support foot 54 and the contact position of the motor 3 are used as the fulcrum to adjust the left and right position of the motor 3, so that the blade 2 and the sealing ring body 52 maintain a good gap, avoid friction between the blade 2 and the sealing ring body 52 when the blade 2 rotates, and improve the overall installation effect of the blade 2, thereby avoiding the existing blade 2 and motor 3 being installed in the shell 1, resulting in the inability to perform fine-tuning work, so that the installation and fixation of the blade 2 is more precise, the friction during the operation of the blade 2 is reduced, the overall service life is increased, and the noise during operation is reduced. The connection position between the inner wall of the sealing cylinder 51 and the boss 32 is flared, and the flared structure reduces the restriction on the boss 32. While the boss 32 and the sealing cylinder 51 play a center positioning role, it is convenient to adjust the installation angle of the motor 3.

[0040] After the adjustment is completed, the whole is installed in the shell 1, the blade 2 is installed in the pumping chamber 131, the sealing head 5 is installed in the sealing chamber 141, and the motor 3 is installed in the motor chamber 16. At this time, the sealing ring body 52 is in contact with the sealing step 14, and the contact sealing effect between the sealing ring 53 and the inner wall of the sealing chamber 141 effectively isolates the liquid in the pumping chamber 131 from entering the motor chamber 16. Then fix the cover body 4, and the cover body 4 is in contact with the tail of the motor 3, so that the head and tail of the motor 3 can be fixed, reducing the shaking of the motor 3 after installation, and a support column 41 is set at the tail of the cover body 4, so that the cover body 4 contacts the tail of the motor 3 through the support column 41, thereby reducing the contact area between the cover body 4 and the tail of the motor 3, reducing the displacement of the position of the motor 3 caused by the cover body 4 during the fixing process, and two support columns 41 are set to improve the stability of the support.

[0041] The sealing head 5 also includes two limiting feet 55, which form a straight line with the center of the sealing cylinder 51. The sealing cylinder 51 is located between the two limiting feet 55. One end of the two limiting feet 55 is connected to the sealing ring body 52. ​​The length of the limiting feet 55 is slightly smaller than the length of the sealing cylinder 51. The two limiting feet 55, the two supporting feet 54 and the sealing cylinder 51 form a cross shape. The sealing step 14 is provided with an inclined transition step 15 at one end away from the pumping step 13. The supporting feet 54 and the limiting feet 55 are provided with a bayonet 59 that is adapted to and interferes with the sealing step 14 and the transition step 15 on the side away from the sealing cylinder 51. The transition step 15 facilitates the sealing head 5 to slide into the sealing cavity 141. When the sealing head 5 enters the sealing cavity 141, the bayonet 59 just interferes with the sealing step 14 and the transition step 15, thereby enhancing the limiting effect on the four positions of the sealing head 5, improving the stability of the connection of the sealing head 5, and thus improving the comprehensiveness of the seal.

[0042] A connecting wing 56 is integrally provided between the two limiting feet 55 and the two supporting feet 54 and the sealing tube 51 near one end of the sealing ring body 52, which effectively improves the connection strength of the supporting feet 54 and the limiting feet 55 and reduces deformation and breakage.

[0043] A separator ring 57 is provided on the inner wall of the sealing cylinder 51. The separator ring 57 forms a mounting portion 571 on the inner wall of the sealing cylinder 51 close to the sealing ring body 52 and a sealing portion 572 on the inner wall away from the sealing ring body 52. ​​A sealing gasket 58 is provided in the sealing portion 572. The sealing gasket 58 is provided with an annular extension portion 581 on the end close to the boss 32. A notch 582 is provided on the extension portion 581. The extension portion 581 contacts the boss 32. When the sealing head 5 is connected to the motor 3, the sealing cylinder 51 contacts the extension portion 581, and the extension portion 581 is squeezed. Since the notch 582 is provided on the extension portion 581, the extension portion 581 can be effectively deformed to fill the gap between the boss 32 and the sealing gasket 58, thereby ensuring a good sealing effect even after fine-tuning, effectively preventing liquid from flowing into the sealing cylinder 51 and damaging the motor 3, and improving the overall sealing effect.

[0044] The blades 2 are provided with extended mounting columns 21 in sequence near the motor 3. The extended mounting columns 21 are inserted into the mounting portion 571 and connected to the motor shaft 31. There are no blades 2 on the extended mounting columns 21. The mounting portion 571 increases the distance between the position where the liquid flows more and the sealing position of the sealing tube 51, thereby reducing liquid seepage and improving the overall sealing effect.

[0045] The housing 1 is provided with a limiting convex strip 17 for supporting the outer shell of the motor 3. The limiting convex strip 17 is convenient for limiting the motor 3 to avoid a large range of tilting during the installation of the motor 3, which may affect the position change of the sealing head 5 and the motor 3.

[0046] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A car windshield wiper water spray motor, comprising a housing (1), blades (2), a motor (3), and a cover (4), wherein the cover (4) is connected to the rear of the housing (1), and the blades (2) are arranged at the head of the housing (1), wherein: The head of the shell (1) is provided with a liquid suction pipe (11); the outer wall of the shell (1) close to one end of the liquid suction pipe (11) is provided with a liquid outlet pipe (12); the inner wall of the liquid suction pipe (11) is tapered; the diameter of the inner wall of the liquid suction pipe (11) close to the shell (1) is larger than the diameter of the end away from the shell (1); the end of the liquid suction pipe (11) away from the shell (1) is provided with a first opening (111) and a second opening (112) arranged along the length direction of the liquid suction pipe (11); the length of the second opening (112) is larger than the length of the first opening (111); the end of the blade (2) away from the motor (3) is provided with an impeller (22) extending toward the liquid suction pipe (11); the impeller (22) extends to a position between the end of the second opening (112) and the end of the first opening (111); The invention also comprises a sealing head (5), wherein the sealing head (5) comprises a sealing cylinder (51), a sealing ring body (52), a sealing ring (53), and two supporting legs (54); the sealing ring body (52) is fixedly connected to the outer side wall of one end of the sealing cylinder (51); the sealing ring (53) is arranged on the outer circumferential side wall of the sealing ring body (52); the two supporting legs (54) and the center of the sealing cylinder (51) form a straight line; the sealing cylinder (51) is located between the two supporting legs (54); one end of the two supporting legs (54) is connected to the sealing ring body (52); the length of the supporting legs (54) is slightly longer than the length of the sealing cylinder (51); and the end of the motor (3) is provided with a sealing member connected to the sealing cylinder (51). The motor shaft (31) is connected to the boss (32) of the housing (1), the motor shaft (31) passes through the boss (32), the two supporting feet (54) are in contact with the ends of the motor (3), the housing (1) is provided with a pumping chamber (131), a sealing chamber (141), and a motor chamber (16) in sequence from the head to the tail, the inner wall of the pumping chamber (131) is provided with a pumping step (13), the inner wall of the sealing chamber (141) is provided with a sealing step (14), the motor shaft (31) passes through the sealing cylinder (51) and is connected to the blade (2), the blade (2) is located in the pumping chamber (131), the sealing head (5) is located in the sealing chamber (141), and the motor (3) is located in the motor chamber (16); The sealing head (5) further comprises two limiting feet (55), wherein the limiting feet (55) and the center of the sealing cylinder (51) form a straight line, and the sealing cylinder (51) is located between the two limiting feet (55), and one end of the two limiting feet (55) is connected to the sealing ring body (52), and the length of the limiting feet (55) is slightly smaller than the length of the sealing cylinder (51), and the two limiting feet (55), the two supporting feet (54) and the sealing cylinder (51) form a cross shape; The connection position between the inner wall of the sealing cylinder (51) and the boss (32) is in a flared shape; The blades (2) are provided with extended mounting columns (21) in sequence near the motor (3); the extended mounting columns (21) are inserted into the mounting portion (571) and connected to the motor shaft (31); A support column (41) is provided inside the cover body (4) and contacts the rear end of the motor (3); and a limiting convex strip (17) is provided inside the housing (1) and supports the outer shell of the motor (3); The inner wall of the sealing cylinder (51) is provided with a separator ring (57), and the separator ring (57) forms a mounting portion (571) at one end of the inner wall of the sealing cylinder (51) close to the sealing ring body (52), and a sealing portion (572) at one end away from the sealing ring body (52). A sealing gasket (58) is provided in the sealing portion (572), and the sealing gasket (58) contacts the boss (32); an annular extension portion (581) is provided at one end of the sealing gasket (58) close to the boss (32), and a notch (582) is provided on the extension portion (581), and the extension portion (581) contacts the boss (32); An inclined transition step (15) is provided at one end of the sealing step (14) away from the pumping step (13), and a bayonet (59) adapted to abut against the sealing step (14) and the transition step (15) is provided at one side of the supporting foot (54) and the limiting foot (55) away from the sealing cylinder (51).

2. The automobile windshield wiper water spray motor according to claim 1, characterized in that: A connecting wing (56) is integrally provided between the two limiting feet (55), the two supporting feet (54) and the sealing cylinder (51) near one end of the sealing ring body (52).

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