Hidden rear wiper motor assembly

Abstract

A hidden rear windscreen wiper motor assembly comprises a rear windscreen wiper motor and a pre-hanging assembly, the rear windscreen wiper motor can be installed on a fixing piece through the pre-hanging assembly, the pre-hanging assembly comprises a supporting sleeve and a rubber plug, a motor shaft of the rear windscreen wiper motor is rotatably arranged in the supporting sleeve, and the rubber plug is arranged in the supporting sleeve. The rubber plug can be fixed to a fixing piece, the supporting sleeve is sleeved with the rubber plug, and the supporting sleeve and the rear wiper motor can be pre-hung to the fixing piece. According to the utility model, the rear wiper motor is pre-hung on the fixing piece, so that the subsequent fixing operation of the rear wiper motor can be simplified, and the mode is firm in installation and can be suitable for pre-hanging of motor bases made of different materials.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile wipers, in particular to a hidden rear wiper motor assembly. Background Art

[0002] The rear wiper of a car is a cleaning device used to clean the rear windshield. As users have increasingly higher requirements for the sophistication of the car's appearance, some models are now beginning to adopt a hidden rear wiper motor layout, that is, the rear wiper motor is arranged between the spoiler and the rear windshield, so that the rear wiper motor is located inside the rear windshield and is almost invisible from the outside.

[0003] However, when assembling the rear wiper motor, due to its heavy weight, workers can only hold the motor with one hand and an electric wrench with the other hand during actual installation. They first pre-tighten the mounting points of the rear wiper motor on the tailgate sheet metal, and then tighten the mounting points separately to install it. This is time-consuming and labor-intensive, and the assembly efficiency is low.

[0004] In response to the above problems, there is currently a method of reducing the weight of the hidden rear wiper motor, thereby realizing the assembly method of pre-hanging the rear wiper motor on the rear windshield and then tightening the mounting point. This assembly method is more labor-saving and efficient than the previous method. In order to reduce the weight of the rear wiper motor, a plastic material can be used to make the motor base, so that the motor shaft part where the rear wiper motor is installed on the rear windshield can withstand the weight of the rear wiper motor, making it easier for workers to assemble. However, the use of plastic material will significantly reduce the strength of the motor base. If the strength is to be comparable to that of a metal motor base, the thickness of the motor base needs to be greatly increased, making the already tight corresponding area of ​​the tailgate sheet metal even worse. Therefore, the scenarios in which this type of technical solution is applicable are very limited. Summary of the Invention

[0005] In view of this, the utility model provides a hidden rear wiper motor assembly that can be pre-hung on the rear windshield glass and is more labor-saving during assembly.

[0006] The utility model provides a hidden rear wiper motor assembly, including a rear wiper motor and a pre-hanging component, the rear wiper motor can be installed on the fixing part through the pre-hanging component, the pre-hanging component includes a supporting sleeve and a rubber plug, the motor shaft of the rear wiper motor is rotatably arranged in the supporting sleeve, the rubber plug can be fixed on the fixing part, the rubber plug is sleeved outside the supporting sleeve, and can fix the supporting sleeve and the rear wiper motor to the fixing part.

[0007] In some embodiments of the present invention, the rubber plug includes a first lip portion, a second lip portion and a connecting portion, the first lip portion is used to be arranged above the fixing member and to abut against the fixing member, the second lip portion is used to be arranged below the fixing member and to abut against the fixing member, the connecting portion is used to pass through the mounting hole on the fixing member, and the first lip portion and the second lip portion are connected together through the connecting portion.

[0008] In some embodiments of the present invention, the first lip portion includes a bowl mouth portion and a groove portion, the edge of the bowl mouth portion is bent toward the second lip portion, the groove portion is formed between the bowl mouth portion and the connecting portion, the first lip portion is abutted against the fixing member through the bowl mouth portion, and the groove portion is used to absorb the elastic deformation of the bowl mouth portion.

[0009] In some embodiments of the present invention, the connecting portion includes a first abutting portion, which is arranged on a side of the connecting portion facing the fixing member, and the connecting portion abuts and seals against the inner wall of the mounting hole through the first abutting portion.

[0010] In some embodiments of the present invention, the first abutting portion includes a plurality of elastic synapses spaced from top to bottom along the axial direction of the support sleeve, the elastic synapses are arranged between the first lip portion and the second lip portion, and the elastic synapses abut against the inner wall of the mounting hole.

[0011] In some embodiments of the present invention, the connecting portion includes a second abutting portion, which is arranged on a side of the connecting portion facing the supporting sleeve, and the connecting portion abuts and seals against the outer wall of the supporting sleeve through the second abutting portion.

[0012] In some embodiments of the present invention, the second abutment portion includes a first flange, a second flange, and a third flange spaced apart from top to bottom along the axial direction of the support sleeve, the first flange is located above the first lip portion, the third flange is located above the second lip portion, the second flange is located between the first flange and the second flange, and the first flange, the second flange, and the third flange respectively abut against the outer wall of the support sleeve.

[0013] In some embodiments of the present invention, the pre-hanging assembly also includes a waterproof ring, which is arranged in a radial groove provided on the top of the support sleeve and is sleeved on the motor shaft. The inner surface of the waterproof ring is abutted against and sealed against the outer wall of the motor shaft.

[0014] In some embodiments of the present invention, the pre-hanging assembly also includes a thrust ring, which includes an assembly portion and a limiting portion extending radially outward from the assembly portion, and the assembly portion is sleeved on the motor shaft, and one end of the limiting portion is against the waterproof ring, and the other end is against the top end of the support sleeve.

[0015] In some embodiments of the present invention, the support sleeve includes a mounting flange, a recessed portion, and a receiving hole. The diameters of the mounting flange, the recessed portion, and the receiving hole increase successively. The mounting flange is arranged above the recessed portion, and the recessed portion is arranged above the receiving hole. The mounting flange is used to abut against the motor shaft and circumferentially limit the motor shaft. The wall surface of the recessed portion is separated from the surface of the motor shaft, and the receiving hole is used to abut against the support seat of the rear wiper motor.

[0016] The hidden rear wiper motor assembly of the present invention pre-installs the motor shaft together with the rear wiper motor on the rear windshield through a pre-hung component that can be firmly mounted on the rear windshield. This allows workers to fix the rear wiper motor to the tailgate sheet metal without having to hold the motor for a long time in the subsequent process. Instead, they only need to perform simple alignment and pre-positioning operations. The operation is simple and labor-saving, and all mounting bases can be tightened directly at one time, avoiding the need for workers to hold the motor with one hand and an electric wrench with the other hand to repeatedly tighten and install the rear wiper motor on the tailgate sheet metal, thereby improving assembly efficiency. The hidden rear wiper motor assembly of the present invention has good sealing performance between the rear windshield and the fixing connection effect. In addition, this hidden rear wiper motor assembly is not limited by the material of the motor base and is applicable to both metal and plastic bases, and has a wide range of applicable scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the hidden rear wiper motor provided by the utility model.

[0018] Figure 2 This is a schematic cross-sectional view of the hidden rear wiper motor along line AA in the present invention.

[0019] Figure 3 This is a top view of the hidden rear wiper motor in the present invention.

[0020] Among them: 1. Rear wiper motor; 11. Motor shaft; 12. Motor body; 13. Mounting seat; 14. Support seat; 2. Pre-hanging assembly; 3. Support sleeve; 31. Mounting flange; 32. Recessed portion; 33. Receiving hole; 4. Rubber plug; 41. First lip portion; 411. Bowl mouth portion; 412. Groove portion; 42. Second lip portion; 43. Connecting portion; 43a. First abutting portion; 43b. Second abutting portion; 431. Elastic synapse; 432. First flange; 433. Second flange; 434. Third flange; 5. Waterproof ring; 6. Thrust ring; 61. Assembly portion; 62. Limiting portion. DETAILED DESCRIPTION

[0021] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0022] It should be noted that the terms "first", "second", "third", "fourth", etc. in the description and claims of the present utility model are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0023] The utility model provides a hidden rear wiper motor assembly. The hidden rear wiper motor assembly of the utility model can be pre-hung on the rear windshield during assembly, thereby improving the assembly efficiency of the entire vehicle.

[0024] See also Figures 1 to 3 The concealed rear wiper motor assembly of the present invention includes a rear wiper motor 1 and a pre-hook assembly 2. The rear wiper motor 1 includes a motor shaft 11, a motor body 12, and a mounting base 13. The rear wiper motor 1 is mounted on a fixed component via the pre-hook assembly 2. The motor shaft 11, motor body 12, and mounting base 13 are fixed together as a whole. The mounting base 13 is used to be fixed to the tailgate sheet metal. The pre-hook assembly 2 includes a support sleeve 3 and a rubber plug 4. The motor shaft 11 is rotatably disposed within the support sleeve 3. The rubber plug 4 is fixed relative to the fixed component and is clamped in the mounting hole on the fixed component. The rubber plug 4 is mounted on the outside of the support sleeve 3 to fix the support sleeve 3 relative to the fixed component.

[0025] Specifically, in this embodiment, the fixing part is the rear windshield of the automobile, and the mounting seat 13 is provided with three mounting points 131 for assembling with the motor mounting bracket on the tailgate sheet metal. That is to say, the mounting seat 13 and the motor body 12 and the motor shaft 11 thereon are all mounted on the tailgate sheet metal, with a portion of the motor shaft 11 located below the fixing part and a portion protruding upward from the fixing part; the support sleeve 3 is a hollow tubular structure, with a portion of the support sleeve 3 located below the fixing part and a portion protruding upward from the fixing part, the motor shaft 11 is passed through the support sleeve 3 and can rotate within the support sleeve 3, and the rubber plug 4 is sleeved on the outside of the support sleeve 3 by an interference fit. It is easy to understand that the rubber plug 4 and the support sleeve 3 do not rotate together with the motor shaft 11, but are relatively fixed to the fixing part. When the motor shaft 11 rotates within the support sleeve 3, the relative fixed relationship between the rubber plug 4 and the fixing part will not be affected; the rubber plug 4 is made of an elastic material, such as rubber, so that workers can pre-insert the rubber plug 4 into the mounting hole on the fixing part during assembly. The hidden rear wiper motor assembly of the present invention pre-hangs the rear wiper motor 1 on the rear windshield glass through a pre-hanging component 2 that can be firmly installed with the rear windshield glass, so that workers do not need to hold the rear wiper motor 1 for a long time when installing it on the tailgate sheet metal, but only need to perform simple alignment and pre-positioning operations. The operation is simple and labor-saving, and can also avoid workers from repeatedly tightening and installing the motor on the tailgate sheet metal, thereby improving assembly efficiency.

[0026] Please refer to Figure 2Furthermore, the rubber plug 4 of the present invention includes a first lip portion 41, a second lip portion 42 and a connecting portion 43. The first lip portion 41 is used to be installed above the fixing member and abut against the fixing member, the second lip portion 42 is used to be installed below the fixing member and abut against the fixing member, and the connecting portion 43 is used to pass through the mounting hole on the fixing member. The first lip portion 41 and the second lip portion 42 are connected as a whole through the connecting portion 43. Specifically, in this embodiment, the connecting portion 43 is recessed between the first lip portion 41 and the second lip portion 42, the outer edge diameter of the first lip portion 41 is larger than the outer edge diameter of the second lip portion 42, which is larger than the outer edge diameter of the connecting portion 43, that is, the rubber plug 4 as a whole is a hollow "I"-shaped structure with a larger upper part and a smaller lower part; the first lip portion 41 is an elastic leather bowl-shaped structure, which includes a bowl mouth portion 411 and a groove portion 412, the edge of the bowl mouth portion 411 is bent toward the second lip portion 42, the groove portion 412 is formed between the bowl mouth portion 411 and the connecting portion 43, the first lip portion 41 is abutted against the fixing part through the bowl mouth portion 411, and the groove portion 412 can absorb the deformation of the bowl mouth portion 411 when the bowl mouth portion 411 is deformed under force, so that the bowl mouth portion 411 can maintain a good contact state with the fixing part. The strength of the second lip portion 42 can be set to be greater than the strength of the first lip portion 41, and the surface of the second lip portion 42 opposite to the fixing part can be set to a plane, so that there is good contact and support between the second lip portion 42 and the fixing part. In the process of placing the rubber plug 4 into the mounting hole or in the process of driving the vehicle, the first lip portion 41 and the second lip portion 42 clamp the fixing part from the upper and lower ends, that is, the inner and outer sides of the fixing part, respectively. The first lip portion 41 contacts and seals the fixing part from above through the bowl mouth portion 411. The second lip portion 42 can provide better support for the fixing part, effectively improving the stability of the fixation between the rubber plug 4 and the fixing part. The utility model realizes the relative fixation between the fixing part and the pre-hanging assembly 2 by clamping the first lip portion 41 and the second lip portion 42 at the upper and lower ends of the fixing part, and contacts and seals the fixing part from the upper and lower ends at the same time, and has a good fixed connection effect.

[0027] Furthermore, the connecting portion 43 of the present invention includes a first abutting portion 43a and a second abutting portion 43b, the first abutting portion 43a is arranged on the side of the connecting portion 43 facing the fixing member, and the connecting portion 43 abuts and seals with the inner wall of the mounting hole through the second abutting portion 43b, the first abutting portion 43a is arranged on the side of the connecting portion 43 facing the supporting sleeve 3, and the connecting portion 43 abuts and seals with the outer wall of the supporting sleeve 3 through the first abutting portion 43a, that is, the first abutting portion 43a and the second abutting portion 43b are respectively arranged on the inner wall and the outer wall of the connecting portion 43, and the first abutting portion 43a and the second abutting portion 43b respectively abut and seal with the mounting hole wall outside the connecting portion 43 and the support sleeve 3 inside the connecting portion 43. Specifically, in this embodiment, the first abutting portion 43a includes three elastic synapses 431 spaced apart from each other along the axial direction of the rubber plug 4 from top to bottom. The elastic synapses 431 are arranged below the first lip portion 41 and above the second lip portion 42, that is, between the first lip portion 41 and the second lip portion 42. The elastic synapses 431 abut against the inner wall of the mounting hole; the second abutting portion 43b includes a first flange 432, a second flange 433 and a third flange 434 spaced apart from each other along the axial direction of the rubber plug 4 from top to bottom. The three flanges 434 are arranged such that the first flange 432 is located above the first lip portion 41, the third flange 434 is located above the second lip portion 42 and below the first abutting portion 43a, and the second flange 433 is located between the first flange 432 and the second flange 433 and above the first abutting portion 43a. By arranging the three flanges at positions where the rubber plug 4 is relatively subjected to greater force and distributing them relatively evenly along the axial direction of the rubber plug 4, the rubber plug 4 and the support sleeve 3 can be firmly fitted and not easily loosened. The connecting portion 43 in the present invention abuts and seals against the fixing member and the support sleeve 3 respectively through the first abutting portion 43a and the second abutting portion 43b, so that the rubber plug 4 and the support sleeve 3 are firmly combined with the fixing member, which can effectively avoid the risk of loosening between the rubber plug 4 and the fixing member after long-term use, causing it to rotate with the motor shaft 11 and thus generating friction noise. In addition, the first abutting portion 43 a , the second abutting portion 43 b , the first lip portion 41 and the second lip portion 42 in the present invention are all sealed, which can improve the service life and safety of the rear wiper motor 1 to a certain extent.

[0028] Furthermore, the pre-hanging assembly 2 of the present invention also includes a waterproof ring 5 and a thrust ring 6. The waterproof ring 5 is provided in a radial groove provided at the top of the support sleeve 3 and is sleeved on the motor shaft 11. The inner surface of the waterproof ring 5 is abutted and sealed against the outer wall of the motor shaft 11, and can rotate with the motor shaft 11. The thrust ring 6 is sleeved on the motor shaft 11 and relatively fixed to the motor shaft 11, and can rotate with the motor shaft 11. The thrust ring 6 includes an assembly portion 61 and a limiting portion 62. The assembly portion 61 is sleeved on the motor shaft 11 and abuts against the waterproof ring 5, and can prevent the waterproof ring 5 from moving upward. The limiting portion 62 is a flange obtained by extending the top end of the assembly portion 61 radially outward along the motor shaft 11. The flange abuts against the top end of the support sleeve 3, and can prevent the support sleeve 3 from moving upward. Specifically, in this embodiment, a portion of the inner wall of the support sleeve 3 protrudes inward from the motor shaft 11, forming a mounting flange 31 on the inner wall of the support sleeve 3. The waterproof ring 5 is disposed above the mounting flange 31 along the axial direction of the motor shaft 11. The thrust ring 6 is disposed above the waterproof ring 5 along the axial direction of the motor shaft 11. The present invention utilizes the waterproof ring 5 and the thrust ring 6 to achieve a waterproof seal between the support sleeve 3 and the motor shaft 11, and to define the relative position between the support sleeve 3 and the motor shaft 11. This allows for pre-assembly of the support sleeve 3 and the motor shaft 11 at a relatively low cost, and the installation operation is relatively simple.

[0029] Furthermore, the support sleeve 3 is provided with a recessed portion 32 below the mounting flange 31. The recessed portion 32 is recessed relative to the mounting flange 31 toward the outer surface of the support sleeve 3. The diameter of the recessed portion 32 is larger than the diameter of the mounting flange 31. This prevents the recessed portion 32 from contacting the motor shaft 11, thereby reducing the friction between the motor shaft 11 and the support sleeve 3 and allowing the motor shaft 11 to rotate more smoothly. In addition, the bottom of the support sleeve 3 is provided with a receiving hole 33. The diameter of the receiving hole 33 is larger than the diameter of the recessed portion 32. When the support sleeve 3 is fitted onto the outside of the motor shaft 11, the support seat 14 of the motor shaft 11 can be accommodated within the receiving hole 33 and abut against the abutment surface formed between the receiving hole 33 and the recessed portion 32, thereby defining the installation position of the support sleeve 3 on the motor body 12. The accommodation and abutment between the support seat 14 and the receiving hole 33 provide a relatively stable connection between the motor body 12 and the support sleeve 3.

[0030] When assembling the concealed rear wiper motor assembly of the present invention, first attach the support sleeve 3 to the motor shaft 11, then attach the waterproof ring 5 to the motor shaft 11, and attach the thrust ring 6 to the motor shaft 11, above the waterproof ring 5. At this point, the support sleeve 3 is positioned relative to the motor shaft 11. The rubber plug 4 is then inserted into the mounting hole on the fixture. Finally, the motor shaft 11, along with the support sleeve 3, is inserted into the rubber plug 4, completing the pre-assembly of the rear wiper motor 1. The motor shaft 11, along with the motor body 12 and mounting base 13 below, are firmly fixed to the fixture, allowing workers to easily secure the mounting base 13 to the tailgate sheet metal.

[0031] In summary, the hidden rear wiper motor assembly of the present invention pre-installs the motor shaft together with the rear wiper motor on the fixing part through a pre-hanging component that can be firmly installed with the fixing part, so that workers do not need to hold the rear wiper motor for a long time when fixing it to the tailgate sheet metal in the subsequent process. They only need to perform simple alignment and pre-positioning operations. The operation is simple and labor-saving, and all mounting seats can be tightened at one time, avoiding the need for workers to hold the motor with one hand and hold an electric wrench with the other hand to repeatedly tighten and install when fixing the rear wiper motor on the tailgate sheet metal, thereby improving assembly efficiency. The sealing between the fixing parts of the hidden rear wiper motor assembly in the present invention is good, and the fixed connection effect is good. In addition, this hidden rear wiper motor assembly does not need to be limited by the material of the motor base, and is applicable to both metal bases and plastic bases, and has a wide range of applicable scenarios.

[0032] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A hidden rear wiper motor assembly, characterized by: The invention comprises a rear wiper motor (1) and a pre-hanging assembly (2), wherein the rear wiper motor (1) can be mounted on a fixing member via the pre-hanging assembly (2), wherein the pre-hanging assembly (2) comprises a supporting sleeve (3) and a rubber plug (4), wherein a motor shaft (11) of the rear wiper motor (1) is rotatably arranged in the supporting sleeve (3), and the rubber plug (4) is fixed to the fixing member, and the rubber plug (4) is sleeved outside the supporting sleeve (3) and can fix the supporting sleeve (3) and the rear wiper motor (1) to the fixing member.

2. The hidden rear wiper motor assembly according to claim 1, characterized in that: The rubber plug (4) includes a first lip portion (41), a second lip portion (42) and a connecting portion (43), wherein the first lip portion (41) is used to be arranged above the fixing member and to abut against the fixing member, the second lip portion (42) is used to be arranged below the fixing member and to abut against the fixing member, and the connecting portion (43) is used to be passed through the mounting hole on the fixing member, and the first lip portion (41) and the second lip portion (42) are connected together through the connecting portion (43).

3. The hidden rear wiper motor assembly according to claim 2, characterized in that: The first lip portion (41) includes a bowl mouth portion (411) and a groove portion (412), the edge of the bowl mouth portion (411) is bent toward the second lip portion (42), the groove portion (412) is formed between the bowl mouth portion (411) and the connecting portion (43), the first lip portion (41) is abutted against the fixing member through the bowl mouth portion (411), and the groove portion (412) is used to absorb the elastic deformation of the bowl mouth portion (411).

4. The hidden rear wiper motor assembly according to claim 2, characterized in that: The connecting portion (43) includes a first abutting portion (43a), which is arranged on a side of the connecting portion (43) facing the fixing member. The connecting portion (43) abuts against and seals the inner wall of the mounting hole through the first abutting portion (43a).

5. The hidden rear wiper motor assembly according to claim 4, characterized in that: The first abutting portion (43a) includes a plurality of elastic synapses (431) arranged at intervals from top to bottom along the axial direction of the supporting sleeve (3), the elastic synapses (431) are arranged between the first lip portion (41) and the second lip portion (42), and the elastic synapses (431) abut against the inner wall of the mounting hole.

6. The hidden rear wiper motor assembly according to claim 2, characterized in that: The connecting portion (43) includes a second abutting portion (43b), which is arranged on a side of the connecting portion (43) facing the supporting sleeve (3). The connecting portion (43) abuts against and seals the outer wall of the supporting sleeve (3) through the second abutting portion (43b).

7. The hidden rear wiper motor assembly according to claim 6, characterized in that: The second abutting portion (43b) includes a first flange (432), a second flange (433) and a third flange (434) which are spaced apart from top to bottom along the axial direction of the support sleeve (3), wherein the first flange (432) is located above the first lip portion (41), the third flange (434) is located above the second lip portion (42), and the second flange (433) is located between the first flange (432) and the second flange (433), and the first flange (432), the second flange (433) and the third flange (434) respectively abut against the outer wall of the support sleeve (3).

8. The hidden rear wiper motor assembly according to claim 1, characterized in that: The pre-hanging assembly (2) further comprises a waterproof ring (5), which is arranged in a radial groove provided at the top of the supporting sleeve (3) and sleeved on the motor shaft (11), and the inner surface of the waterproof ring (5) abuts against and seals the outer wall of the motor shaft (11).

9. The hidden rear wiper motor assembly according to claim 8, characterized in that: The pre-hanging assembly (2) further includes a thrust ring (6), the thrust ring (6) including an assembly portion (61) and a limiting portion (62) extending radially outward from the assembly portion (61), the assembly portion (61) being sleeved on the motor shaft (11), one end of the limiting portion (62) being in contact with the waterproof ring (5), and the other end being in contact with the top end of the support sleeve (3).

10. The hidden rear wiper motor assembly according to claim 1, characterized in that: The support sleeve (3) comprises a mounting flange (31), a recessed portion (32) and a receiving hole (33); the diameters of the mounting flange (31), the recessed portion (32) and the receiving hole (33) increase successively; the mounting flange (31) is arranged above the recessed portion (32); the recessed portion (32) is arranged above the receiving hole (33); the mounting flange (31) is used to abut against the motor shaft (11) and circumferentially limit the motor shaft (11); the wall surface of the recessed portion (32) is separated from the surface of the motor shaft (11); and the receiving hole (33) is used to abut against the support seat (14) of the rear wiper motor.

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