CN212921441U - Worm connecting structure, wiper driving mechanism and wiper - Google Patents
Worm connecting structure, wiper driving mechanism and wiper Download PDFInfo
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- CN212921441U CN212921441U CN202021323599.XU CN202021323599U CN212921441U CN 212921441 U CN212921441 U CN 212921441U CN 202021323599 U CN202021323599 U CN 202021323599U CN 212921441 U CN212921441 U CN 212921441U
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Abstract
The utility model provides a worm connection structure, is including the worm of locating the casing, and its one end and driving motor output shaft, casing and driving motor pass through the installation department and are connected as an organic whole, and the embedment resin normal running fit in the cooperation portion of the worm other end and casing. The cooperation portion forms the mating holes with the inside sunken cooperation of worm terminal surface, and the mating holes axis matches with the worm axis, and the vertical sunken hole of cooperation portion top surface is formed with the hole of irritating, irritates hole and mating holes intercommunication, and the rotating part of the worm other end is worn in the mating holes, has the potting resin in the hole of embedment, will rotate the portion parcel after the potting resin encapsulation, rotates portion and potting resin normal running fit. A wiper drive mechanism comprising: the worm driving mechanism comprises a driving motor, a shell, a gear and a worm connecting structure; the gear is rotatably arranged in the shell and meshed with the worm. A wiper comprises a wiper driving mechanism, a connecting rod assembly and a brush body. Through the embedment resin structure to the worm suspension is realized to simpler and easier mode, and the cooperation is more stable.
Description
Technical Field
The utility model relates to a wiper especially is relevant with a worm connection structure, wiper actuating mechanism and wiper.
Background
Wipers are important automotive parts/assemblies, and are commonly used to wipe the front or rear windshield of an automobile. The wiper includes a drive mechanism, a link mechanism, a brush body, and the like.
In a wiper driving mechanism, a motor and a gear are generally used to output driving force in a direction to drive a link mechanism to drive a brush body to rotate in a reciprocating manner. At present, a wiper driving mechanism comprises a motor, a worm, a gear and a shell for bearing the worm and the gear, and the worm is not suspended in many schemes, so that the worm and the shell have friction in long-term use, and the stability and the precision after long-term use are influenced; although the suspension is realized by the scheme that a bolt/screw matched with the other end of the worm is utilized to realize support by rotationally matching the axial worm, after long-term use, abrasion caused by rotational friction exists inevitably, so that the stability of operation is influenced, and the eccentricity and the precision are influenced, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
To the not enough and defect of above-mentioned relevant prior art, the utility model provides a worm connection structure, wiper actuating mechanism and wiper not only can realize the worm suspension under the suspension state through increasing simple and easy mode moreover, and the stability of using for a long time is ensured to more lasting cooperation.
In order to achieve the above purpose, the utility model adopts the following technology:
the utility model provides a worm connection structure, is including locating the worm of casing, and its one end and driving motor output shaft, casing and driving motor pass through the installation department and are connected as an organic whole, its characterized in that, the embedment resin normal running fit in the cooperation portion of worm other end and casing.
Further, the matching portion and the end face matched with the worm are inwards sunken to form a matching hole, the axis of the matching hole is matched with the axis of the worm, a filling hole is formed in the vertical sunken portion of the top face of the matching portion and communicated with the matching hole, the rotating portion at the other end of the worm penetrates through the matching hole, filling resin is arranged in the filling hole, the rotating portion is wrapped after the filling resin is filled, and the rotating portion is in rotating fit with the filling resin.
Further, the front end of the rotating part is a conical surface.
Furthermore, the end wall of the matching part matched with the worm is provided with a first annular groove and a second annular groove at intervals, the first annular groove and the second annular groove are communicated with the filling and sealing hole, and the axes of the first annular groove and the second annular groove are overlapped with the axis of the matching hole.
Further, the first annular groove is close to the end face of the matching portion matched with the worm, the diameter of the first annular groove is smaller than that of the second annular groove, a first preset gap is formed between a partition wall between the first annular groove and the second annular groove and the rotating portion of the matching portion, the partition wall between the second annular groove and the filling and sealing hole and the rotating portion of the matching portion are matched, a second preset gap is formed between the partition wall and the filling and sealing hole, and the first preset gap is smaller than the second preset gap.
Furthermore, a sealing ring is arranged on the end face of the matching part matched with the worm.
A wiper drive mechanism, comprising: the driving motor, the shell, the gear and the worm connecting structure are arranged in the shell; the gear is rotatably arranged in the shell and meshed with the worm. The housing is provided with a plurality of mounting portions having screw holes for mounting the driving mechanism at a predetermined position.
The wiper is characterized by comprising the wiper driving mechanism, a connecting rod assembly connected with the wiper driving mechanism and a brush body connected with the connecting rod assembly.
The utility model has the advantages that:
through simple and easy structure and implementation, realize the suspension of worm and casing internal bottom surface to improved worm and casing normal running fit's stability and coaxial precision, long-term the back of using can not lead to the fact wearing and tearing to the worm, through this kind of structural design's wiper actuating mechanism and wiper, stability is strong, compares in through the axial set up bolt/screw in order with the worm tip normal running fit's mode, and is simple and easy convenient more.
Drawings
Fig. 1 is a schematic structural view of a worm connection structure and a wiper drive mechanism according to an embodiment of the present application.
Fig. 2 is a partial sectional view of a worm connection structure according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are some, but not all embodiments of the present invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the worm connection structure applied to the wiper drive mechanism is provided for the present example.
The worm connecting structure of the embodiment includes a worm 3 provided in a housing 2, one end of which is connected to an output shaft of a driving motor 1, and the housing 2 and the driving motor 1 are connected as a whole through an installation part, and is characterized in that the other end of the worm 3 is rotationally fitted with a potting resin 4 in a fitting part 21 of the housing 2.
During implementation, one end of the worm 3 is assembled firstly and is connected with an output shaft of the driving motor 1, then the shell 2 is assembled and is connected with the driving motor 1 through the installation part, meanwhile, the other end of the worm 3 penetrates through the matching part 21, and then the molding of the potting resin 4 is completed through potting/injection molding. Not only realized that worm 3 suspends in casing 2, had predetermined clearance with casing 2 inner bottom surface, made the other end normal running fit of worm 3 simultaneously and filled resin 4, ensured normal running fit's stability, avoided the wearing and tearing of normal running fit portion to worm 3.
When the device is used, the driving motor 1 works to drive the worm 3 to rotate, and the worm 3 is suspended in the shell 2 to rotate.
As a preferred embodiment of this example, as shown in fig. 2, there are the following preferred embodiments:
(1) the cooperation portion 21 inwards caves in with worm 3 complex terminal surface and forms the mating holes, and the mating holes axis matches with worm 3 axis, and the vertical sunken hole of filling that is formed with of cooperation portion 21 top surface irritates hole and mating holes intercommunication, and the rotation portion 31 of the 3 other ends of worm wears in the mating holes, has potting resin 4 in the potting hole, and the portion 31 parcel will rotate after potting resin 4 seals, rotation portion 31 and 4 normal running fit of potting resin.
In this way, molding/injection of the potting resin 4 is facilitated to complete the wrapping of the potting resin 4 to the rotating portion 31 at the other end of the worm 3 to form a running fit.
(2) The end wall of the matching part 21 matched with the worm 3 is provided with a first annular groove 211 and a second annular groove 212 at intervals, the first annular groove 211 and the second annular groove 212 are communicated with the filling and sealing hole, and the axes of the first annular groove 211 and the second annular groove 212 are coincident with the axis of the matching hole. The first annular groove 211 is arranged close to the end face of the matching portion 21 matched with the worm 3, the diameter of the first annular groove 211 is smaller than that of the second annular groove 212, a first preset gap is formed between a partition wall between the first annular groove 211 and the second annular groove 212 and the rotating portion 31 matched with the matching portion 21, a second preset gap is formed between the partition wall between the second annular groove 212 and the filling and sealing hole and the rotating portion 31 matched with the matching portion 21, and the first preset gap is smaller than the second preset gap.
By the mode, the gradient structure is formed after the potting resin 4 is molded, the situation that the potting resin 4 is possibly separated from the potting hole after long-term use is avoided, and the position of the potting resin 4 is ensured to be kept stable. Specifically, the design of the first preset gap and the second preset gap enables the first annular groove 211 and the second annular groove 212 to be communicated with the filling and sealing hole, and injection molding/filling and sealing are conveniently performed.
(3) The end surface of the matching part 21 matched with the worm 3 is provided with a sealing ring 6.
(4) The front end of the rotating part 31 is a conical surface 32, so that after the potting resin 4 is molded, the front end of the rotating part 31 is matched with the rotating part more stably, and the coaxial precision is guaranteed.
Example 2
As shown in fig. 1, a wiper drive mechanism is provided for the present example.
In this example, the wiper drive mechanism includes: a drive motor 1, a housing 2, a gear 5, and a worm connecting structure as in embodiment 1; the gear 5 is rotatably provided in the housing 2 and meshes with the worm 3. The housing 2 is provided with a plurality of mounting portions 20 having screw holes for mounting the drive mechanism at a predetermined position.
During implementation, the worm connecting structure is assembled firstly, then the gear 5 is assembled, the gear 5 is meshed with the worm 3, and then lubricating oil is applied to the gear 5 and the worm 3. The wiper drive mechanism is then mounted to the location of application by the mounting portion 20.
Example 3
The present application also provides an embodiment of a wiper, in which the wiper driving mechanism is the wiper driving mechanism according to embodiment 2, and the wiper driving mechanism is connected with a connecting rod assembly, and the connecting rod assembly is connected with the brush body.
The connecting rod assembly is driven to swing through the wiper driving mechanism, so that the brush body moves to wipe water.
Claims (9)
1. The utility model provides a worm connection structure, is including locating worm (3) of casing (2), and its one end and driving motor (1) output shaft, and casing (2) are connected as an organic whole through the installation department with driving motor (1), and its characterized in that, potting resin (4) normal running fit in the cooperation portion (21) of worm (3) other end and casing (2).
2. The worm connecting structure according to claim 1, wherein an end face of the matching portion (21) matched with the worm (3) is recessed inwards to form a matching hole, the axis of the matching hole is matched with the axis of the worm (3), a filling hole is formed in the top surface of the matching portion (21) in a vertical recessed manner and is communicated with the matching hole, the rotating portion (31) at the other end of the worm (3) penetrates through the matching hole, filling resin (4) is arranged in the filling hole, the rotating portion (31) is wrapped after the filling resin (4) is filled, and the rotating portion (31) is matched with the filling resin (4) in a rotating manner.
3. The worm connection according to claim 2, characterized in that the front end of the turning portion (31) is a tapered surface (32).
4. The worm connection according to claim 2, characterized in that the end wall of the fitting portion (21) to which the worm (3) is fitted is provided with a first annular groove (211) and a second annular groove (212) at a spacing, the first annular groove (211) and the second annular groove (212) communicating with the potting hole, and the axes of the first annular groove (211) and the second annular groove (212) coincide with the fitting hole axis.
5. The worm connection according to claim 4, characterised in that the first annular groove (211) is provided close to the end face of the fitting portion (21) with the worm (3), the diameter of the first annular groove (211) being smaller than the diameter of the second annular groove (212), a first predetermined clearance being provided between the partition wall between the first annular groove (211) and the second annular groove (212) and the rotating portion (31) fitted into the fitting portion (21), a second predetermined clearance being provided between the partition wall between the second annular groove (212) and the potting hole and the rotating portion (31) fitted into the fitting portion (21), the first predetermined clearance being smaller than the second predetermined clearance.
6. The worm connection according to claim 1, characterised in that the end surface of the engagement portion (21) engaging the worm (3) is provided with a sealing ring (6).
7. A wiper drive mechanism, comprising: a drive motor (1), a housing (2), a gear (5), and a worm connection according to any one of claims 1 to 6; the gear (5) is rotatably arranged on the shell (2) and is meshed with the worm (3).
8. The wiper drive mechanism according to claim 7, wherein the housing (2) is provided with a plurality of mounting portions (20) having screw holes for mounting the drive mechanism at predetermined positions.
9. A wiper comprising the wiper drive mechanism according to claim 7, and a link assembly connected to the wiper drive mechanism, and a brush body connected to the link assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021323599.XU CN212921441U (en) | 2020-07-08 | 2020-07-08 | Worm connecting structure, wiper driving mechanism and wiper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021323599.XU CN212921441U (en) | 2020-07-08 | 2020-07-08 | Worm connecting structure, wiper driving mechanism and wiper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212921441U true CN212921441U (en) | 2021-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021323599.XU Active CN212921441U (en) | 2020-07-08 | 2020-07-08 | Worm connecting structure, wiper driving mechanism and wiper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212921441U (en) |
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2020
- 2020-07-08 CN CN202021323599.XU patent/CN212921441U/en active Active
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