CN114368360A - Shaft retainer ring fixing structure of wiper link mechanism - Google Patents

Abstract

The invention discloses a shaft collar fixing structure of a wiper connecting rod mechanism, belongs to a collar groove structure for a shaft, and aims to improve the accuracy of collar assembly. The device comprises a wiper output shaft, wherein a clamping ring groove which is inwards sunken along the radial direction of the wiper output shaft is arranged on the wiper output shaft, and the clamping ring groove comprises an inner side groove wall, an outer side groove wall and a groove bottom wall; the inner side groove wall is an inclined plane which gradually inclines towards the inner end of the wiper output shaft along the radial direction of the clamping ring groove. According to the invention, the inner side groove wall is an inclined surface gradually inclined towards the inner side of the wiper output shaft along the radial direction of the clamping ring groove, so that the opening width of the clamping ring groove is increased, the path of the clamping ring sliding through the clamping ring groove to be advanced is prolonged, the time for the clamping ring to contract is further prolonged, and the probability of the clamping ring sliding through the clamping ring groove is reduced; more importantly, the inner side groove wall is an inclined surface, so that the clamping ring slides to the bottom of the clamping ring groove along the inclined surface of the chamfer under the action of the contracting force of the clamping ring, and the clamping ring is favorably and accurately assembled in place.

Description

Shaft retainer ring fixing structure of wiper link mechanism

Technical Field

The invention belongs to the field of shaft collar groove structures, and particularly relates to a shaft collar fixing structure of a wiper link mechanism.

Background

The wiper output shaft of the wiper link mechanism is used for installing the wiper scraping arm on the wiper supporting seat to drive the wiper scraping arm to move. As shown in fig. 1, along the axial direction of the wiper output shaft 1, one end of the wiper output shaft 1 connected with the wiper arm 6 is the outer end of the wiper output shaft 1, the other end of the wiper output shaft 1 is the inner end thereof, and the inner end of the wiper output shaft 1 is connected with the wiper shaft connecting plate 5. A clamping ring groove 1A is arranged on the wiper output shaft 1, and the wiper output shaft 1 is divided into an inner section 1B between the clamping ring groove 1A and the inner end and an outer section 1C between the clamping ring groove 1A and the outer end through the clamping ring groove 1A. The inner section 1B penetrates through an inner hole of the wiper bearing seat 3 to be connected with a wiper shaft connecting plate 5, the inner end of the wiper bearing seat 3 is in contact constraint through the wiper shaft connecting plate 5, and a wave washer is arranged between the inner end of the wiper bearing seat 3 and the wiper shaft connecting plate 5 to eliminate a gap between the axial direction of the wiper shaft assembly and the bearing seat. 3 outer ends of the wiper supporting seat are restrained through a clamping ring 2 clamped in a clamping ring groove 1A, the clamping ring 2 is pressed in through the outer end of a wiper output shaft 1, the deformation inner diameter of the clamping ring 2 is enlarged to enter the clamping ring groove 1A nearby in the pressing-in process, and the assembly is completed through the contraction of the elastic deformation force until the clamping ring groove 1A is entered.

The conventional wiper output shaft ring groove structure is shown in fig. 2, and includes an inner groove wall 1a1, an outer groove wall 1a2 and a groove bottom wall 1A3, wherein the inner groove wall 1a1 is perpendicular to the wiper output shaft 1. The structure of the wiper collar groove of the structure has the following defects: in the axial assembling and pressing process of the clamping ring 2 along the wiper output shaft 1, the clamping ring 2 deforms greatly and contracts and compresses at the position of completely entering the clamping ring groove 1A, but in the process, the clamping ring 2 possibly enters the inner side section 1B on the inner side of the clamping ring groove 1A without completely contracting, and the quality hidden trouble that the clamping ring is not assembled in place exists.

Disclosure of Invention

The invention aims to solve the problem of high probability of the assembly failure between the conventional clamping ring and the clamping ring groove, and provides a clamping ring fixing structure of a wiper connecting rod mechanism, which improves the accuracy of the assembly of the clamping ring.

The technical scheme adopted by the invention is as follows: the shaft clamping ring fixing structure of the windscreen wiper connecting rod mechanism comprises a windscreen wiper output shaft, wherein a clamping ring groove which is inwards sunken along the radial direction of the windscreen wiper output shaft is arranged on the windscreen wiper output shaft, and the windscreen wiper output shaft is divided into an inner side section positioned on the inner side of the clamping ring groove and an outer side section positioned on the outer side of the clamping ring groove through the clamping ring groove along the axial direction of the windscreen wiper output shaft; the clamping ring groove comprises an inner side groove wall, an outer side groove wall and a groove bottom wall; the inner side groove wall is an inclined plane which gradually inclines towards the inner end of the wiper output shaft along the radial direction of the clamping ring groove;

one end of the inner side groove wall connected with the groove bottom wall is the bottom end of the wiper along the radial direction of the wiper output shaft, and the other end of the inner side groove wall is the top end of the wiper; the distance between the bottom of the inner side groove wall and the outer side groove wall is matched with the clamping ring.

Furthermore, the inclination angle of the inner side groove wall is A, A is more than or equal to 30 degrees and less than or equal to 75 degrees, and the inclination angle of the inner side groove wall is the included angle between the inner side groove wall and the central axis of the wiper output shaft.

Furthermore, the outer side groove wall is a plane vertical to the output shaft of the wiper.

Furthermore, the inner side section of the wiper output shaft is inserted into the wiper supporting seat, and a flat gasket is sleeved on the wiper output shaft and arranged between the outer end face of the wiper supporting seat and the clamping ring.

Further, the rand includes the rand body, is provided with the opening that link up the rand body along its radial on the rand body.

Furthermore, the retainer ring body is an integrated piece and comprises a clamping part and reinforcing parts arranged at two ends of the clamping part along the annular direction of the retainer ring body, and the reinforcing parts at two ends surround the opening; and the reinforcing part is formed by the outward bulge and thickening of the outer wall of the clamping ring body.

The invention has the beneficial effects that: according to the invention, the inner side groove wall is an inclined surface gradually inclined towards the inner side of the wiper output shaft along the radial direction of the clamping ring groove, so that the opening width of the clamping ring groove is increased, the path of the clamping ring sliding through the clamping ring groove to be advanced is prolonged, the time for the clamping ring to contract is further prolonged, and the probability of the clamping ring sliding through the clamping ring groove is reduced; more importantly, the inner side groove wall is an inclined surface, so that the clamping ring slides to the bottom of the clamping ring groove along the inclined surface of the chamfer under the action of the contracting force of the clamping ring, and the clamping ring is favorably and accurately assembled in place.

Drawings

FIG. 1 is a schematic view of a wiper linkage structure;

FIG. 2 is a prior art schematic view of a wiper output shaft;

FIG. 3 is a schematic view of the wiper output shaft disclosed in the present invention;

FIG. 4 is an assembly view of the wiper output shaft collar disclosed by the present invention;

figure 5 is a schematic view of the collar.

In the figure, a wiper output shaft 1, a retainer ring groove 1A, an inner groove wall 1A1, an outer groove wall 1A2, a groove bottom wall 1A3, an inner section 1B, an outer section 1C, a retainer ring 2, a retainer ring body 2A, an opening 2B, a clamping part 2A1, a reinforcing part 2A2, a wiper supporting seat 3, a flat gasket 4, a wiper shaft connecting plate 5 and a wiper scraping arm 6.

Detailed Description

The invention is further described below with reference to the following figures and examples:

the shaft collar fixing structure of the wiper linkage mechanism comprises a wiper output shaft 1, as shown in fig. 3, wherein a collar groove 1A which is inwards recessed along the radial direction of the wiper output shaft 1 is arranged on the wiper output shaft 1, and the wiper output shaft 1 is divided into an inner section 1B which is positioned at the inner side of the collar groove 1A and an outer section 1C which is positioned at the outer side of the collar groove 1A along the axial direction of the wiper output shaft through the collar groove 1A; the clamp ring groove 1A comprises an inner groove wall 1A1, an outer groove wall 1A2 and a groove bottom wall 1A 3; the inner side groove wall 1A1 is an inclined surface which gradually inclines outwards to the inner end of the wiper output shaft 1 along the radial direction of the clamping ring groove 1A; along the radial direction of the wiper output shaft 1, one end of the inner side groove wall 1A1 connected with the groove bottom wall 1A3 is the bottom end of the inner side groove wall, and the other end of the inner side groove wall is the top end of the inner side groove wall; the distance between the bottom end of the inner groove wall 1A1 and the outer groove wall 1A2 is matched with the clamp ring 2.

In the invention, the snap ring groove 1A comprises an inner groove wall 1A1, an outer groove wall 1A2 and a groove bottom wall 1A3, wherein the inner groove wall 1A1 and the outer groove wall 1A2 are oppositely arranged, the groove bottom wall 1A3 connects the inner groove wall 1A1 and the outer groove wall 1A2 together, and the three jointly form the snap ring groove 1A. Relatively, the inner groove wall 1a1 is closer to the inner end of the wiper output shaft 1, i.e. the inner groove wall 1a1 is an end face of the inner section 1B; the outer groove wall 1a2 is closer to the outer end of the wiper output shaft 1, i.e., the outer groove wall 1a2 is an end face of the outer section 1C. Because the rand 2 slides in from the outer end of the wiper output shaft 1 to the inner end direction in the assembling process, namely the acting force for driving the rand 2 is applied to the inner end direction of the wiper output shaft 1 along the axial direction of the wiper output shaft 1, the width of the notch of the rand groove 1A is small, and the phenomenon that the rand 2 slides through the rand groove 1A is easy to occur.

According to the invention, the inner side groove wall 1A1 is an inclined surface gradually inclined towards the inner side of the wiper output shaft 1 along the radial direction of the clamping ring groove 1A, so that the opening width of the clamping ring groove 1A is increased, the path which needs to be traveled when the clamping ring 2 slides through the clamping ring groove 1A is prolonged, the time for the clamping ring 2 to contract is further prolonged, and the probability that the clamping ring 2 slides through the clamping ring groove 1A is reduced; more importantly, the inner side groove wall 1A1 is an inclined surface, so that the clamping ring 2 slides to the bottom of the clamping ring groove 1A along the inclined surface of the inclined angle under the action of the contraction force, and the accurate assembly of the clamping ring 2 is ensured.

The smaller the inclination angle of the inner groove wall 1A1, the larger the opening width of the collar groove 1A, and the more the collar 2 is easily retracted into the collar groove 1A, but the larger the opening width, the larger the range of the collar groove 1A penetrating into the inner end of the wiper output shaft 1, and the more the mounting of the wiper support base 3 is affected. The larger the inclination angle of the inner side groove wall 1A1, the smaller the opening width of the collar groove 1A, and the easier it is for the collar 2 to straddle the collar groove 1A, which is disadvantageous for the collar 2 to be assembled in place. The inclination angle of the inner side groove wall 1A1 is A, A is more than or equal to 30 degrees and less than or equal to 75 degrees, and the inclination angle of the inner side groove wall 1A1 is the included angle between the inner side groove wall 1A1 and the central axis of the wiper output shaft 1. After many times of practice, the installation is carried out at the inclination angles of 30 degrees, 45 degrees, 60 degrees and 75 degrees, the assembling accuracy of the clamping ring 2 is extremely high, and the phenomenon that the clamping ring 2 spans the clamping ring groove 1A does not occur.

In order to effectively limit the collar 2 at the outer side of the collar 2, the outer groove wall 1a2 is a plane perpendicular to the wiper output shaft 1.

Preferably, as shown in fig. 4, the inner section 1B of the wiper output shaft 1 is inserted into the wiper support base 3, since the wiper support base 3 is made of a material which is generally softer than the wiper output shaft 1, and the inner groove wall 1a1 is provided with an inclination angle, if the outer end surface of the wiper support base 3 is directly contacted with the collar 2, the parts of the wiper support base 3 are seriously worn and generate foreign matters in the using process, which affects the using reliability of the product. In order to avoid the problems, the invention is characterized in that a flat gasket 4 is sleeved on the wiper output shaft 1, and the flat gasket 4 is arranged between the outer end surface of the wiper supporting seat 3 and the retainer ring 2 in a cushioning mode.

In order to facilitate the assembly of the collar 2 while ensuring the shrink performance of the collar 2, as shown in fig. 5, the collar 2 includes a collar body 2A, and an opening 2B penetrating the collar body 2A in a radial direction thereof is provided on the collar body 2A. The collar 2 of the structure is deformed by the growth of the opening 2B, so that the inner diameter of the collar 2 is expanded, and the collar is assembled into the wiper output shaft 1

In order to ensure the strength of the opening 2B, the collar body 2A is an integral piece, and includes a clamping portion 2A1 and reinforcing portions 2A2 arranged at two ends of the clamping portion 2A1 along the circumferential direction, and the opening 2B is surrounded by the reinforcing portions 2A2 at the two ends; and the reinforcing portion 2A2 is formed by an outwardly projecting thickening of the outer wall of the collar body 2A.

Claims (6)

1. The shaft collar fixing structure of the wiper linkage mechanism comprises a wiper output shaft (1), wherein a collar groove (1A) which is inwards recessed along the radial direction of the wiper output shaft is arranged on the wiper output shaft (1), and the wiper output shaft (1) is divided into an inner side section (1B) positioned on the inner side of the collar groove (1A) and an outer side section (1C) positioned on the outer side of the collar groove (1A) along the axial direction of the wiper output shaft through the collar groove (1A); the clamping ring groove (1A) comprises an inner groove wall (1A1), an outer groove wall (1A2) and a groove bottom wall (1A 3); the method is characterized in that: the inner side groove wall (1A1) is a slope which gradually inclines towards the inner end of the wiper output shaft (1) along the radial direction of the clamping ring groove (1A);

along the radial direction of the wiper output shaft (1), one end of the inner side groove wall (1A1) connected with the groove bottom wall (1A3) is the bottom end of the inner side groove wall, and the other end of the inner side groove wall is the top end of the inner side groove wall; the distance between the bottom end of the inner groove wall (1A1) and the outer groove wall (1A2) is matched with the clamping ring (2).

2. The wiper linkage shaft collar fixing structure of claim 1, wherein: the inclination angle of the inner side groove wall (1A1) is A, A is more than or equal to 30 degrees and less than or equal to 75 degrees, and the inclination angle of the inner side groove wall (1A1) is the included angle between the inner side groove wall (1A1) and the central axis of the wiper output shaft (1).

3. The wiper linkage shaft collar fixing structure of claim 1 or 2, wherein: the outer side groove wall (1A2) is a plane vertical to the wiper output shaft (1).

4. The wiper linkage shaft collar fixing structure of claim 1 or 2, wherein: the inner side section (1B) of the wiper output shaft (1) is inserted into the wiper support seat (3), a flat gasket (4) is sleeved on the wiper output shaft (1), and the flat gasket (4) is arranged between the outer end face of the wiper support seat (3) and the clamping ring (2).

5. The wiper linkage shaft collar fixing structure of claim 1 or 2, wherein: rand (2) are provided with along its opening (2B) of radially running through rand body (2A) including rand body (2A) on rand body (2A).

6. The wiper linkage shaft collar fixing structure of claim 5, wherein: the clamping ring body (2A) is an integral piece and comprises a clamping part (2A1) and reinforcing parts (2A2) arranged at two ends of the clamping part (2A1) along the annular direction, and the reinforcing parts (2A2) at the two ends enclose to form the opening (2B); and the reinforcing part (2A2) is formed by the outward protruding thickening of the outer wall of the collar body (2A).

Images