Wiper motor with sealing structure

Abstract

The utility model discloses a wiper motor with a sealing structure, which comprises a motor, a reduction gearbox and an output shaft, and is characterized in that the reduction gearbox is provided with a sleeve, the output shaft extends out of the reduction gearbox from the sleeve, the output shaft can rotate in the sleeve, the output shaft is provided with an annular groove, and the annular groove can reduce the contact area between the output shaft and the sleeve; wherein a sealing structure is arranged between the sleeve and the output shaft, and the sealing structure forms sealing connection between the sleeve and the output shaft; through the arrangement of the sealing ring and the waterproof lining, effective sealing is achieved, the waterproof performance is good, rainwater is effectively prevented from flowing into the motor along the reduction gearbox, and the service life of the wiper motor is prolonged; through the arrangement of the mounting block, the guide block and the guide groove, the mounting block can slide in the axial direction of the output shaft, adjustment by a user is facilitated, through the arrangement of the extrusion block and the locking block, the extrusion block is rotated, and the locking block can be extruded inwards, so that locking between the output shaft and the mounting block is achieved, and the output shaft is prevented from moving during working.

Description

TECHNICAL FIELD

[0001] The utility model relates to wiper equipment technical field especially with sealing structure's wiper motor. BACKGROUND

[0002] The wiper is used to brush and scrape the raindrop and dust attached to the windshield of the vehicle to improve the visibility of the driver and increase the driving safety, and almost all the cars in the place are provided with the wiper, and the back window of the hatchback and the recreational vehicle is also provided with the wiper, and in addition to the car, other transport tools are also provided with the wiper, such as the train and the tram, and the existing wiper is generally driven through the cooperation of the wiper motor and the connecting rod structure in the process of use, so that the wiper can reciprocate, and the connecting rod structure bears the transmission effect.

[0003] For example, the utility model discloses a wiper motor assembly, by fixing it on the target installation surface, then installing the mounting frame on the fixed block through the installation bolt, under the action of the spring, the ball block is pressed on the installation surface, at this moment, the pressure sensor detects the pressure value, when the wiper motor assembly is fastened on the installation surface, the pressure value detected by the pressure sensor is inconvenient, and when the connection between the wiper motor assembly and the installation surface is loose, that is, the installation column is away from the installation surface by a certain distance, then the pressure value detected by the pressure sensor becomes small, the installation quality detection function of the wiper motor is realized, the installation situation of the wiper motor can be known in time by the user, and the working efficiency of the wiper motor assembly is ensured., but such structure still has the following several significant defects:

[0004] 1, the end part of the speed reducer body of the existing wiper motor is made into a chamfer structure for the convenience of pressing the bushing, so that rainwater inevitably seeps into the motor body along the speed reducer body, and the external rainwater is easy to seep into the motor body due to the poor sealing of the wiper motor, resulting in poor contact of the motor body;

[0005] 2, the existing wiper motor cannot adjust the installation distance between the wiper and the wiper motor according to the actual situation, and the practicability is low. SUMMARY

[0006] The utility model aims at solving one of the technical problems existing in the prior art.

[0007] The application provides a wiper motor with a sealing structure, which comprises a motor, a speed reducer and an output shaft, a sleeve is installed on the speed reducer, the output shaft extends out of the speed reducer from the sleeve, and the output shaft can rotate in the sleeve, an annular groove is arranged on the output shaft, and the annular groove can reduce the contact area between the output shaft and the sleeve.

[0008] The sealing structure is arranged between the sleeve and the output shaft, and forms a sealed connection between the sleeve and the output shaft.

[0009] Further, the sealing structure comprises a sealing ring, the output shaft is provided with an annular mounting groove, and the sealing ring is mounted in the annular mounting groove; the outer ring of the sealing ring is in interference fit with the sleeve, thereby forming a seal.

[0010] Further, the sealing structure further comprises a waterproof bushing, the output shaft is provided with an annular clamping groove, and the waterproof bushing is mounted in the annular clamping groove; the bottom end of the waterproof bushing is in abutment with the top end of the sleeve.

[0011] Further, the output shaft is slidably mounted with a mounting block, the mounting block is provided with a mounting groove, the mounting groove is provided with an extrusion block and a deformable locking block, the top end of the locking block is fixedly connected with the mounting block, the bottom end of the locking block is fixedly connected with a support block, the inner circumferential surface of the locking block and the support block is in abutment with the output shaft, the extrusion block is threadedly connected with the mounting block, and the locking between the output shaft and the mounting block can be realized by rotating the extrusion block to inwardly extrude the locking block.

[0012] Further, the extrusion block comprises an extrusion ring block, a connecting block and a rotating block, the connecting block is fixedly connected with the extrusion ring block and the rotating block at two ends respectively, the outer circumferential surface of the connecting block is provided with a thread, and the inner circumferential surface of the mounting groove is provided with a thread.

[0013] The connecting block is provided with a limiting block, and the limiting block is used for preventing the extrusion block from being separated from the mounting groove.

[0014] Further, the limiting block comprises a rotating block and a sliding block, the outer circumferential surface of the connecting block is provided with a rotating groove, the rotating block is rotatably mounted on the rotating groove, the outer circumferential surface of the rotating block is fixedly mounted with the sliding block, and the mounting groove is provided with a sliding groove in sliding fit with the sliding block.

[0015] Further, the inner diameter of the extrusion ring block gradually decreases in the direction close to the rotating block, and the outer diameter of the locking block gradually decreases in the direction.

[0016] Further, the mounting block and the locking block are provided with guide grooves, and the output shaft is provided with guide blocks in sliding fit with the guide grooves.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. Through the arrangement of the sealing ring and the waterproof bushing, effective sealing and good waterproof performance are achieved, the problem of poor sealing of the wiper motor can be solved, rainwater is prevented from flowing into the motor along the reduction gearbox, motor damage is avoided, and the service life of the wiper motor is prolonged.

[0019] 2, by the installation block, guide block and guide groove setting, installation block can slide along the output shaft axial, convenient for user adjustment, through the setting of extrusion block and locking block, rotating extrusion block, can be inward extrusion locking block, to realize the locking between output shaft and installation block, prevent its movement when working, improve the practicability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 For the structure diagram of a rain brush motor with sealing structure in the embodiment of the application;

[0021] Figure 2 For Figure 1 The sectional view structure diagram along the A-A direction;

[0022] Figure 3 For Figure 2 The enlarged structure diagram of B in the middle;

[0023] Figure 4 For Figure 2 The enlarged structure diagram of C in the middle;

[0024] Figure 5 For Figure 1 The enlarged structure diagram of D in the middle;

[0025] Figure 6 For Figure 2 The enlarged structure diagram of E in the middle.

[0026] Reference signs

[0027] 1-motor, 2-reduction box, 21-sleeve, 3-output shaft, 31-annular groove, 4-sealing structure, 41-sealing ring, 42-annular mounting groove, 43-waterproof bushing, 44-annular clamping groove, 5-mounting block, 51-mounting groove, 52-extrusion block, 521-extrusion ring block, 522-connection block, 523-rotating block, 524-limiting block, 525-rotating block, 526-sliding block, 527-rotating groove, 528-sliding groove, 53-locking block, 54-supporting block, 61-guide groove, 62-guide block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the application will be described clearly below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some of the embodiments of the application, not all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the application.

[0029] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] The following description, in conjunction with the accompanying drawings, details a wiper motor with a sealed structure provided in this application through specific embodiments and application scenarios.

[0031] Example 1:

[0032] like Figures 1 to 4 As shown, this application embodiment provides a wiper motor with a sealing structure, including a motor 1, a reduction gearbox 2, and an output shaft 3; a sleeve 21 is installed on the reduction gearbox 2, the output shaft 3 extends out of the reduction gearbox 2 from the sleeve 21, and the output shaft 3 can rotate within the sleeve 21; an annular groove 31 is provided on the output shaft 3, which can reduce the contact area between the output shaft 3 and the sleeve 21; wherein, a sealing structure 4 is provided between the sleeve 21 and the output shaft 3, and the sealing structure 4 forms a sealed connection between the sleeve 21 and the output shaft 3.

[0033] Furthermore, the sealing structure 4 includes a sealing ring 41, and the output shaft 3 is provided with an annular mounting groove 42. The sealing ring 41 is installed in the annular mounting groove 42, and the outer ring of the sealing ring 41 is press-fitted with the sleeve 21 to form a seal.

[0034] Furthermore, the sealing structure 4 also includes a waterproof bushing 43, and the output shaft 3 is provided with an annular groove 44, in which the waterproof bushing 43 is installed, and the bottom end of the waterproof bushing 43 is in contact with the top end of the sleeve 21.

[0035] In this embodiment of the present application, since the above structure is adopted, the motor 1 is fixedly installed on the reduction gearbox 2, the output shaft of the motor 1 is engaged with the gear inside the reduction gearbox 2, the output shaft 3 is arranged on the gear, the axis of the output shaft 3 coincides with the axis of the gear, the output shaft 3 is used to drive the automobile wiper to reciprocate, the annular mounting groove 42 is arranged on the output shaft 3, the sealing ring 41 is mounted in the annular mounting groove 42, and the sealing ring 41 can be axially limited, so that the risk of the sealing ring 41 being separated out during the rotation of the output shaft 3 does not occur, thereby ensuring that when the sleeve 21 and the output shaft 3 relatively rotate, the sleeve 21 and the output shaft 3 still have good sealing connection, the annular clamping groove 44 is arranged on the output shaft 3, the waterproof bushing 43 is mounted in the annular clamping groove 44, the bottom end of the waterproof bushing 43 is attached to the top end of the sleeve 21, and the waterproof bushing 43 can prevent rainwater from flowing into the sleeve 21, thereby further improving the sealing effect.

[0036] The annular groove 31 is arranged on the output shaft 3, the contact area between the output shaft 3 and the sleeve 21 can be reduced, the friction of the sleeve 21 during installation can be reduced, and the user can conveniently install the sleeve 21.

[0037] Embodiment 2

[0038] As shown in the drawings, Figure 5 and Figure 6 In this embodiment, in addition to the structural features of the foregoing embodiments, the mounting block 5 is slidingly mounted on the output shaft 3, the mounting groove 51 is arranged on the mounting block 5, the extrusion block 52 and the deformable locking block 53 are arranged in the mounting groove 51, the top end of the locking block 53 is fixedly connected with the mounting block 5, the bottom end is fixedly connected with the support block 54, the inner circumferential surfaces of the locking block 53 and the support block 54 are attached to the output shaft 3, the extrusion block 52 is threadedly connected with the mounting block 5, the extrusion block 52 is rotated, the locking block 53 is inwardly extruded, and the locking between the output shaft 3 and the mounting block 5 is achieved.

[0039] Further, the extrusion block 52 comprises the extrusion ring block 521, the connecting block 522 and the rotating block 523, the connecting block 522 is fixedly connected with the extrusion ring block 521 and the rotating block 523 at both ends, respectively, the outer circumferential surface of the connecting block 522 is provided with threads, and the inner circumferential surface of the mounting groove 51 is provided with threads; wherein the limiting block 524 is arranged on the connecting block 522, and the limiting block 524 is used to prevent the extrusion block 52 from being separated from the mounting groove 51.

[0040] Further, the limiting block 524 comprises the rotating block 525 and the sliding block 526, the rotating groove 527 is arranged on the outer circumferential surface of the connecting block 522, the rotating block 525 is rotatably mounted on the rotating groove 527, the sliding block 526 is fixedly mounted on the outer circumferential surface of the rotating block 525, and the sliding groove 528 that is in sliding cooperation with the sliding block 526 is arranged on the mounting groove 51.

[0041] Further, the inner diameter of the extrusion ring block 521 gradually decreases in the direction close to the rotating block 523, and the outer diameter of the locking block 53 gradually decreases in the direction.

[0042] Further, the mounting block 5 and the locking block 53 are provided with a guide groove 61, and the output shaft 3 is provided with a guide block 62 that is in sliding fit with the guide groove 61.

[0043] In this embodiment of the application, due to the adoption of the above structure, the outer peripheral surface of the mounting block 5 can be mounted with the automobile wiper, when adjustment is needed, the rotating block 523 is rotated, the rotating block 523 drives the extrusion ring block 521 and the connecting block 522 to rotate synchronously, since the outer peripheral surface of the connecting block 522 is provided with threads and the inner peripheral surface of the mounting groove 51 is provided with threads, the connecting block 522 is in threaded connection with the mounting block 5, thus the rotation of the connecting block 522 drives the rotating block 523 and the extrusion ring block 521 to slide in the direction of the reduction gearbox 2, since the inner diameter of the extrusion ring block 521 gradually decreases in the direction close to the rotating block 523 and the outer diameter of the locking block 53 gradually decreases in the direction, the sliding of the extrusion ring block 521 in the direction of the reduction gearbox 2 gradually reduces the extrusion force on the locking block 53, thereby reducing the friction between the locking block 53 and the output shaft 3, and the mounting block 5 can slide axially along the output shaft 3, which is convenient for the user to adjust;

[0044] By rotating the rotating block 523 in the opposite direction, the rotating block 523 drives the extrusion ring block 521 and the connecting block 522 to rotate synchronously, since the outer peripheral surface of the connecting block 522 is provided with threads and the inner peripheral surface of the mounting groove 51 is provided with threads, the connecting block 522 is in threaded connection with the mounting block 5, thus the rotation of the connecting block 522 drives the rotating block 523 and the extrusion ring block 521 to slide in the direction of the locking block 53, since the inner diameter of the extrusion ring block 521 gradually decreases in the direction close to the rotating block 523 and the outer diameter of the locking block 53 gradually decreases in the direction, the sliding of the extrusion ring block 521 in the direction of the locking block 53 extrudes the locking block 53 inward, thereby increasing the friction between the locking block 53 and the output shaft 3, and achieving the locking between the output shaft 3 and the mounting block 5;

[0045] During the rotation of the connecting block 522, the connecting block 522 does not rotate the rotating block 525, and the connecting block 522 drives the rotating block 525 to slide in the axial direction, the sliding of the rotating block 525 drives the sliding block 526 to slide in the sliding groove 528, the sliding block 526 and the sliding groove 528 cooperate to limit the position, which can prevent the extrusion block 52 from being separated from the mounting groove 51 during the adjustment process;

[0046] The locking block 53 is fixedly connected with a support block 54 at the bottom end, the support block 54 is located between the output shaft 3 and the connecting block 522, and plays a role in reducing the shaking;

[0047] The locking block 53 is provided with a guide slot 61, and the output shaft 3 is provided with a guide block 62 in sliding fit with the guide slot 61, and through the sliding fit of the guide block 62 with the guide slot 61, the rotation of the output shaft 3 can drive the mounting block 5 to rotate synchronously.

[0048] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements in the list, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the phrase "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be pointed out that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, features described with reference to certain examples can be combined in other examples.

[0049] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are only illustrative, not limiting, and those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A wiper motor with a sealing structure, comprising a motor, a reduction box and an output shaft, characterized in that, The sleeve is arranged on the reduction gearbox, the output shaft extends out of the reduction gearbox from the sleeve, and the output shaft is rotatable in the sleeve, and the output shaft is provided with an annular groove, which can reduce the contact area between the output shaft and the sleeve; The sealing structure is arranged between the sleeve and the output shaft, and forms a sealed connection between the sleeve and the output shaft.

2. The wiper motor with a sealing structure according to claim 1, wherein The sealing structure includes a sealing ring, the output shaft is provided with an annular mounting groove, the sealing ring is mounted in the annular mounting groove, and the outer ring of the sealing ring is in interference fit with the sleeve to form a seal.

3. The wiper motor with a sealing structure according to claim 1, wherein The sealing structure further includes a waterproof bushing, the output shaft is provided with an annular clamping groove, the waterproof bushing is mounted in the annular clamping groove, and the bottom end of the waterproof bushing is in close contact with the top end of the sleeve.

4. The wiper motor with a sealing structure according to claim 1, wherein The mounting block is slidably mounted on the output shaft, the mounting block is provided with a mounting groove, the mounting groove is provided with an extrusion block and a deformable locking block, the top end of the locking block is fixedly connected with the mounting block, the bottom end is fixedly connected with a support block, the inner circumferential surface of the locking block and the support block is in close contact with the output shaft, the extrusion block is threadedly connected with the mounting block, and rotating the extrusion block can extrude the locking block inward to lock the output shaft and the mounting block.

5. A wiper motor with a sealing structure according to claim 4, characterized in that, The extrusion block includes an extrusion ring block, a connecting block and a rotating block, the connecting block is fixedly connected with the extrusion ring block and the rotating block at both ends, the outer circumferential surface of the connecting block is provided with a thread, and the inner circumferential surface of the mounting groove is provided with a thread. The connecting block is provided with a limiting block, and the limiting block is used for preventing the extrusion block from being separated from the mounting groove.

6. A wiper motor with a sealing structure according to claim 5, wherein The limiting block includes a rotating block and a sliding block, the outer circumferential surface of the connecting block is provided with a rotating groove, the rotating block is rotatably mounted on the rotating groove, the outer circumferential surface of the rotating block is fixedly mounted with the sliding block, and the mounting groove is provided with a sliding groove in sliding fit with the sliding block.

7. The wiper motor with a sealing structure according to claim 5, wherein The inner diameter of the extrusion ring block gradually decreases in the direction close to the rotating block, and the outer diameter of the locking block gradually decreases in the direction.

8. The wiper motor with a sealing structure according to claim 4, wherein The mounting block and the locking block are provided with a guide groove, and the output shaft is provided with a guide block in sliding fit with the guide groove.

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