Sealing doctor blade assembly

Abstract

The utility model relates to a sealing doctor blade component, which belongs to the technical field of VVT (variable valve timing) phase actuators and comprises a plastic doctor blade and a metal elastic sheet, the plastic doctor blade is rectangular, a pair of long side surfaces of the plastic doctor blade are respectively a scraping surface and a back surface, and a rectangular groove consistent with the length direction of the back surface is arranged in the middle of the back surface. Shaft holes are correspondingly formed in two long groove walls of the rectangular groove; the metal elastic sheet is C-shaped, two ends of the metal elastic sheet are respectively a connecting end and a free end, convex shafts are correspondingly arranged at near end parts of two sides of the connecting end, an arc opening of the metal elastic sheet is inwards arranged in the rectangular groove, the connecting end of the metal elastic sheet is rotatably connected to the two shaft holes through the convex shafts on two sides, the free end of the metal elastic sheet is connected to the bottom of the rectangular groove in a sliding manner, and the middle part of the arc back of the metal elastic sheet is always exposed out of the rectangular groove; the metal elastic sheet is usually connected to the plastic scraping sheet to form the external member, and the external member is beneficial to improving the installation efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to VVT phase executor especially relates to a sealed wiper blade assembly. BACKGROUND

[0002] As Figures 4-5 shown, VVT phase executor includes stator 10, rotor 20, front cover plate 30 and rear cover plate 40, and the rotor 20 is rotationally arranged inside the stator 10, and the front cover plate 30 and the rear cover plate 40 enclose the rotor 20 inside the stator 10;The inner wall of the stator is circumferentially provided with a plurality of protrusions 10.1, and a plurality of protrusions 10.1 are separated into a plurality of cavities 10.2, and the outer wall of the rotor 20 is provided with a plurality of rudders 20.1, and a plurality of rudders 20.1 are rotationally arranged in a plurality of cavities 10.2 one by one, and each rudder 20.1 circumferentially divides the corresponding cavity 10.2 into two independent chambers, and the oil enters the two chambers respectively, and the oil pressure difference of the two chambers is adjusted, and the oil pressure is transmitted to the rudder 20.1, so as to drive the rotor 20 to rotate back and forth in the stator 10. In order to seal the rudder 20.1 in the cavity 10.2 where it is located, the front and rear end faces of the rudder 20.1 are usually directly sealed and contacted with the front cover plate 30 and the rear cover plate 40 respectively, and the outer wall of the rotor 20 is directly sealed and contacted with the inner surface of the protrusion 10.1, and the wiper blade assembly 50 is arranged on the outer surface of the rudder 20.1 to be sealed and contacted with the cavity wall of the cavity 10.2. The components of the conventional wiper blade assembly 50 are independent of each other and cannot be pre-assembled, and need to be manually installed one by one into the installation groove 20.11 arranged on the rudder 20.1, so the installation efficiency is low, which affects the production efficiency. UTILITY MODEL CONTENTS

[0003] The utility model aims at improving the above-mentioned deficiencies existing in the prior art wiper blade assembly.

[0004] Therefore, the utility model adopts the following technical scheme:

[0005] A sealed wiper blade assembly, comprising a plastic wiper blade and a metal spring piece, the plastic wiper blade is rectangular, one pair of long side faces are divided into a scraping surface and a back surface, the back surface is centrally provided with a rectangular slot consistent with the length direction, and corresponding shaft holes are provided on the two long slot walls; the metal spring piece is C-shaped, and its two ends are divided into a connecting end and a free end, corresponding convex shafts are provided on the two sides of the proximal end of the connecting end, the metal spring piece is arranged in the rectangular slot with the arc opening facing inward, the connecting end is rotationally connected to the two shaft holes through the convex shafts on the two sides, the free end is slidably connected to the bottom of the rectangular slot, and the arc back middle part is always exposed outside the rectangular slot, so that the metal spring piece is always connected to the plastic wiper blade to form a set.

[0006] As a preferred scheme, a reinforcing rib perpendicular to the length direction of the rectangular slot is protruded on the bottom of the rectangular slot.

[0007] As a preferred solution, the reinforcing rib is arranged at the middle of the length direction of the rectangular groove.

[0008] As a preferred solution, the metal spring is arranged outside the reinforcing rib.

[0009] As a preferred solution, the shaft hole is a circular through hole, and the convex shaft is rectangular.

[0010] As a preferred solution, the middle part of the metal spring extends to both sides to form a wide supporting surface.

[0011] As a preferred solution, the connecting end of the metal spring is provided with a first arc-shaped part which is outwardly curved, and the arc back of the first arc-shaped part is in contact with the groove bottom of the rectangular groove.

[0012] As a preferred solution, the free end of the metal spring is provided with a second arc-shaped part which is outwardly curved, and the arc back of the second arc-shaped part is in contact with the groove bottom of the rectangular groove.

[0013] As a preferred solution, when the free end of the metal spring slides to the other end of the rectangular groove which is away from the shaft hole, the arc back of the middle part of the metal spring exposes the back of the plastic scraping piece.

[0014] The plastic scraping piece and the metal spring of the utility model can be pre-assembled into a kit, and can be integrally and disposable installed on the rotor of the VVT phase actuator, which is beneficial to improve the installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Structure diagram of the sealing scraping piece assembly disclosed by the utility model

[0016] Figure 2 Exploded view of the sealing scraping piece assembly disclosed by the utility model

[0017] Figure 3 Sectional view of the sealing scraping piece assembly disclosed by the utility model

[0018] Figure 4 Structure diagram of the rudder piece sealing structure of the prior phase actuator

[0019] Figure 5 Structure diagram of the rudder piece sealing structure of the prior phase actuator DETAILED DESCRIPTION

[0020] The utility model will be described below in combination with the drawings and specific embodiments.

[0021] As Figures 1-3The sealing wiper assembly comprises a plastic wiper 1 and a metal spring 2. The plastic wiper 1 is rectangular, and one pair of long edges is divided into a wiper surface and a back surface. A long slot 1.1 is arranged in the middle of the back surface and is consistent with the length direction of the back surface. Two long slot walls of the long slot 1.1 are provided with shaft holes 1.11 corresponding to the long slot walls. The shaft holes 1.11 are round through holes. The metal spring 2 is C-shaped, and two ends of the metal spring 2 are divided into a connecting end and a free end. Rectangular convex shafts 2.1 are arranged on both sides of the connecting end. The metal spring 2 is arranged in the long slot 1.1 with the arc opening facing inwards. The connecting end is rotatably connected to the two shaft holes 1.11 through the convex shafts 2.1 on both sides. The free end is slidably connected to the bottom of the long slot 1.1. The middle part of the arc back of the metal spring 2 is always exposed outside the long slot 1.1, so that the metal spring 2 is always connected to the plastic wiper 1 to form a set.

[0022] In order to keep the two ends of the plastic wiper 1 balanced, when the free end of the metal spring 2 slides to the other end of the long slot 1.1 away from the shaft hole 1.11, the middle part of the arc back of the metal spring 2 is exposed to the back of the plastic wiper 1. In addition, the middle part of the metal spring 2 is extended to both sides to form a wide supporting surface 2.2.

[0023] In order to improve the strength of the plastic wiper 1, a reinforcing rib 1.12 perpendicular to the length direction of the long slot 1.1 is arranged on the bottom of the long slot 1.1. The reinforcing rib 1.12 is arranged at the middle of the length direction of the long slot 1.11, and the metal spring 2 is arranged outside the reinforcing rib 1.12.

[0024] In order to make the two ends of the metal spring 2 slide smoothly, a first arc-shaped part 2.3 is arranged on the connecting end of the metal spring 2, and a second arc-shaped part 2.4 is arranged on the free end of the metal spring 2. The arc back of the first arc-shaped part 2.3 and the arc back of the second arc-shaped part 2.4 are in contact with the bottom of the long slot 1.11.

[0025] In combination Figures 4-5 When installed, the utility model can be installed in the installation slot 20.11 arranged on the rudder 20.1 at one time, and the metal spring 2 is inside and the plastic wiper 1 is outside. The metal spring 2 elastically supports and pushes the plastic wiper 1 out of the outer surface of the rudder 20.1, and the plastic wiper 1 is in close contact with the cavity wall of the partition cavity 10.2 to achieve sealing.

Claims

1. A sealing wiper assembly comprising a plastic wiper blade (1) and a metal spring blade (2), characterized in that: The plastic scraping piece (1) is in the shape of a rectangular block, one pair of long side surfaces of which are respectively a scraping surface and a back surface, the back surface of which is centrally provided with a rectangular slot (1.1) in the same direction as the length of the back surface, and two long slot walls of the rectangular slot (1.1) are respectively provided with an axle hole (1.11); the metal elastic piece (2) is in the shape of C, and two ends of the metal elastic piece (2) are respectively a connecting end and a free end, the connecting end of the metal elastic piece (2) is provided with a convex axle (2.1) at the proximal end of the connecting end, the metal elastic piece (2) is arranged in the rectangular slot (1.1) with the arc opening facing inward, the connecting end of the metal elastic piece (2) is respectively rotatably connected to the two axle holes (1.11) through the two convex axles (2.1), the free end of the metal elastic piece (2) is slidably connected to the bottom of the rectangular slot (1.1), and the arc back of the metal elastic piece (2) is always exposed outside the rectangular slot (1.1), so that the metal elastic piece (2) is always connected to the plastic scraping piece (1) to form a set.

2. A sealing blade assembly according to claim 1, wherein: The bottom of the rectangular slot (1.1) is provided with a reinforcing rib (1.12) perpendicular to the length direction of the rectangular slot (1.1).

3. A sealing blade assembly according to claim 2, wherein: The reinforcing rib (1.12) is arranged at the middle of the length direction of the rectangular slot (1.1).

4. A sealing blade assembly according to claim 2, wherein: The metal elastic piece (2) is arranged outside the reinforcing rib (1.12).

5. A sealing blade assembly according to claim 1, wherein: The axle hole (1.11) is a round through hole, and the convex axle (2.1) is in the shape of a rectangle.

6. A sealing blade assembly according to claim 1, wherein: The middle of the metal elastic piece (2) extends to both sides to form a wide supporting surface (2.2).

7. A sealing blade assembly according to claim 1, wherein: The connecting end of the metal elastic piece (2) is provided with a first outwardly curved arc-shaped part (2.3), and the arc back of the first outwardly curved arc-shaped part (2.3) is in contact with the bottom of the rectangular slot (1.1).

8. A sealing blade assembly according to claim 1, wherein: The free end of the metal elastic piece (2) is provided with a second outwardly curved arc-shaped part (2.4), and the arc back of the second outwardly curved arc-shaped part (2.4) is in contact with the bottom of the rectangular slot (1.1).

9. A sealing blade assembly according to claim 1, wherein: When the free end of the metal elastic piece (2) slides to the other end of the rectangular slot (1.1) away from the axle hole (1.11), the arc back of the metal elastic piece (2) is exposed to the back of the plastic scraping piece (1).

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