WO2020235761A1 - Car wiper - Google Patents

Abstract

The present invention relates to a car wiper and, more specifically, to a car wiper configured as a wiper assembly comprising: an adapter mounted on a wiper operating arm; an adapter holder for constraining the adapter; a frame holder to which the adapter holder and the adapter constrained thereby are coupled so as to be exposed upwards; left and right primary levers disposed on the left and right sides of the frame holder, respectively, such that respective one-side ends thereof, which face each other, are coupled to the left and right sides of the frame holder, respectively; left and right secondary levers connected to two lever joints, respectively, which are coupled to other-side ends of the left and right primary levers, respectively; four tertiary levers provided to be connected to fourth lever joints, respectively, which are formed on both ends of the left and right secondary levers, respectively; and a rubber-material blade assembled to be horizontally fitted to eight blade supports formed on both ends of the fourth tertiary levers, respectively. Each of the left and right primary levers, the left and right secondary levers, and the fourth tertiary levers is made of an elastic leaf spring metal material having elasticity. The left and right primary levers have left and right primary protruding bridges formed thereon, respectively, which are incised by punching so as to protrude upwards. Eight crows are formed on both ends of the fourth tertiary levers, respectively, and comprise crow clips, respectively, configured such that, during elastic pressing operations of the tertiary levers while holding the rubber-material blade, same move along slide assembly grooves of the blade together with the crows, and simultaneously enable the crows to rotate. (Representative drawing) figure 1

Description

Car wiper

The present invention relates to a wiper for an automobile, and specifically, to perform a wiping operation in a state in which the wiper blade is elastically in close contact with the windshield surface of a vehicle, while providing an operation in which the wiper blade is elastically attached to the windshield surface of a vehicle. Accordingly, the present invention relates to a wiper for a vehicle configured to minimize air resistance acting on the wiper during high-speed driving of a vehicle by allowing the installation height of the wiper assembly to be lowered.

Automobile wiper is a device for wiping rainwater or foreign matter flowing down on the windshield of a car when it rains. The driving force of the wiper motor installed in the car is transmitted through the link mechanism so that the wiper operating arm reciprocates at a predetermined angle. It is configured, and a wiper assembly having a blade made of rubber material attached to one side of the wiper operating arm is detachably installed at the front end.

The wiper assembly 100 detachably installed on the conventional wiper operating arm includes a frame body 102 to which the adapter 101 to which the tip of the wiper operating arm 200 is mounted is coupled as shown in FIG. A pair of rivet joints 103 that are symmetrically assembled at both ends of the frame body 102, and a pair of rivet joints 103 that are symmetrically assembled at both ends of the frame body 102, respectively. One frame 104, a plurality of pairs of second frames 106 that are symmetrically assembled rotatably with rivet joints 105 at both ends of each of the pair of first frames 104, and the plurality of pairs of The second frame 106 has a rubber blade 108 that is interchangeably fitted in a horizontal direction to the support 107 formed at both ends of the frame 106, and the blades 108 are provided on both sides of the blade 108. It has a structure in which a plate-shaped metal spring rail 109 that imparts an elastic force so that it can be elastically adhered to the windshield is embedded.

Wiper assembly 100 of the prior art as described above receives the kinetic force from the wiper operating arm 200 and finally mediates the trajectory motion of the blade 108, the wiper operating arm 200, the blade 108 and the blade It is configured to operate by driving the wiper operating arm 200 by concentrating a metal spring rail 109 to provide a certain elastic strength to 108 in one place, and the first and second frames 104 and 106 It is arranged in an even distribution in the main body 102, and the frame main body 102 is configured such that a plurality of holes are drilled to promote drainage of rainwater and reduce weight.

In addition, on both sides of the blade 108, a stepped step formed in a horizontal direction and a metal spring rail 109 so that it can be fitted horizontally to the support holes 107 formed at both ends of the second frame 106 are horizontally arranged. The slide insertion groove is configured to be symmetrically formed to be inserted.

However, in the prior art wiper assembly 100 as described above, the frame body 102 and the first and second frames 104 and 106 and the first and second frames 104 and 106 are press-molded using a steel plate material, and the blade 108 made of rubber material. Constructed by assembling metal spring rails 109 on both sides, this structure has a problem in that normal operation is impossible due to the phenomenon of freezing of the connecting parts and joints of each part in winter, and obstacles such as elastic deformation of the blades, resulting in the front of the vehicle. There is a problem in that the glass surface cannot be cleaned normally.

In addition, the prior art has a structure that it is difficult to transmit the pressing force to the entire blade 108 with an equally distributed load, since the portion for elastically pressing the blade is made of each point based on the plurality of rivet joints 105. As a result, there is a problem in that not only a partial significant difference appears in the wear rate of the blade 108, but also a phenomenon in which the entire windshield surface of the vehicle cannot be uniformly wiped due to separation due to the lifting phenomenon.

{Prior technical literature}

{Patent Literature}

(Patent Document 1) Utility Model Registration No. 20-0282487 (announced on July 22, 2002)

(Patent Document 2) Registered Patent No. 10-0616259 (2006. 08. 21. Announcement)

(Patent Document 3) Registered Patent No. 10-0682841 (Announcement on February 15, 2007)

(Patent Document 4) Registered Patent No. 10-1691427 (2017. 01. 09. Announcement)

The present invention has been proposed in consideration of all the problems encountered in the prior art as described above, a primary lever coupled to a frame holder of a wiper assembly on which a wiper operating arm is mounted, and both secondary levers coupled to both ends of the primary lever, and Formed with an elastic leaf spring structure having excellent elasticity while reducing the weight of each of the four tertiary levers coupled to both ends of each of the secondary rollers on both sides, but bending the elastic leaf spring structure of each of the primary and secondary levers In the meantime, the crows at both ends of each of the four turret levers hold the blade stably even if the turret lever itself flexes flexibly, while at the same time holding the blade stably and according to the change in curvature of the windshield of the car, the blade The blades of the wiper assembly for wiping the windshield surface of the vehicle are in close contact with the entire wiping area of the windshield surface of the vehicle with strong elasticity by interposing a crow clip that elastically adheres to the windshield surface, and the wiper Provides a wiper for automobiles that allows the assembly to be installed at a low height by being elastically attached to the windshield surface of the vehicle, thereby performing a wiping operation in a state that is in close contact with the windshield surface of the vehicle without being lifted by air resistance during high-speed driving. It was invented with a purpose.

The present invention is a means for pursuing the above object,

An adapter mounted on the wiper operating arm, an adapter holder constraining the adapter, a frame holder coupled so that the adapter holder and the adapter constrained thereto are exposed to the upper side, each of which is disposed on the left and right sides of the frame holder to face each other. Left and right secondary levers each of which one end is connected to the left and right primary levers coupled to the left and right sides of the frame holder, and two lever joints respectively coupled to the other end of the left and right primary levers, the Four tertiary levers are provided to be connected to four lever joints formed at both ends of each of the left and right secondary levers, and the four tertiary levers are fitted horizontally into the eight blade support holes formed at both ends of each of the four tertiary levers. A wiper for automobiles composed of a wiper assembly including a blade made of rubber material to be assembled,

Each of the left and right primary levers, the left and right secondary levers, and the four tertiary levers are made of an elastic plate spring metal material having elasticity,

Each of the left and right primary levers has left and right primary protruding bridges that are cut out by punching and protrude upward,

Each of the eight crows formed at both ends of the four turret levers moves along the slide assembly groove of the blade like a crow when the turret lever is elastically pressed while holding the blade made of rubber. It characterized in that it is configured to include a crow clip that is assembled to enable the rotation of the crow.

In addition, the left and right secondary levers are divided into one tenon formed long in length and the other end formed short in length based on an assembly connection hole prefabricated to the other end of each of the left and right primary levers. , It characterized in that the one side secondary protruding bridge and the other side secondary protruding bridge having a long and short length while being cut by punching and protruding upwardly are formed at each of the one side tenon and the other end.

In addition, each of the left and right primary levers and the left and right secondary levers is characterized in that the cross section is bent in any one selected from an inverted V shape or an arc shape.

In addition, each of the left and right primary levers and the left and right secondary levers is formed during punching to form left and right primary protruding bridges, one secondary protruding bridge, and the other secondary protruding bridge to allow air to escape. It characterized in that it is configured so that each punching hole is formed.

In addition, assembly holes for assembling the crow clip rotatably are formed on both sides of each of the eight crows formed at both ends of the four tertiary levers, and assembly holes are rotatably assembled on both sides of the crow clip. It is characterized in that it is configured so that both hinge projections protrude symmetrically.

In addition, the upper portion of the crow clip is configured so that both side inclined surfaces inclined at a certain angle toward the blade direction based on the upper protrusions formed to protrude toward the width direction of both hinge protrusions formed symmetrically. It features.

In addition, it is characterized in that the lower end of the crow clip is assembled so as to move along both slide assembly grooves formed in the blade and at the same time, it is characterized in that the support protrusions bent in a direction facing each other to hold the blade is formed.

According to the present invention, the wiper assembly installed so as to be in close contact with the windshield surface of an automobile includes a force elastically pressed by the wiper operating arm, left and right primary levers, left and right secondary levers and four tertiary levers composed of an elastic leaf spring structure. Since the blade can be pressed with a strong elastic force by each elastic action, the blade has an effect of enabling the wiping operation to be performed with an elastic contact force on the windshield surface of the vehicle.

In addition, according to the present invention, the left and right primary levers, left and right secondary levers, and four tertiary levers each press the blade elastically by the force pressed by the wiper operating arm. The installation height to the connected adapter and adapter holder is lowered, and air is escaped through the punching holes formed in each of the left and right primary levers and left and right secondary levers, thereby reducing air resistance during high-speed driving. As a result, the wiper does not lift when driving at high speed, and the blade has the effect of smoothly performing the wiping operation.

In addition, according to the present invention, since each of the four tertiary levers can press the blade with its own elastic force, the tertiary lever formed at the end of the blade presses the end of the blade with its own elastic force, so that the windshield surface of the car has a gentle curvature. Since the tip of the blade can be elastically adhered to the glass surface that changes from the inflection point that changes to abrupt curvature in, there is an effect that the entire wiping area of the blade can be wiped with a normal wiping operation.

1 is an exploded perspective view showing separate components constituting a wiper assembly to illustrate the present invention,

Figure 2 is a front view of the wiper assembly assembly state of the present invention,

Figure 3 is a front view of the assembly state of each component shown in a state in which left and right air spoilers of the wiper assembly of the present invention are separated,

4 is a cross-sectional view taken along line A-A of FIG. 3,

5 is a cross-sectional view taken along line B-B of FIG. 3,

Figure 6 (a) (b) (c) is a side view of the left and right primary levers assembled to the frame holder of the wiper assembly of the present invention and a bending process of the left and right primary levers shown in a cross-sectional view taken along line C-C.

7 is an exploded perspective view for explaining the assembly state of the assembly end of each of the left and right primary levers and the lever joint of the present invention,

8(a)(b) is a front view of the left and right secondary levers of the present invention,

9 is an exploded perspective view of a lever joint assembled at both ends of each of the left and right secondary levers of the present invention.

Figure 10 (a) (b) (c) is a bonding state diagram sequentially showing the bonding state of the lever joints formed at both ends of the left and right primary levers and the connecting holes formed on the left and right secondary levers of the present invention. .

11 is an enlarged view of part X of FIG. 1,

12 is a front installation state diagram of the tertiary lever of the present invention,

13 is a front operational state diagram of the tertiary lever of the present invention,

14 is a cross-sectional view taken along line C-C in FIG. 12.

Figure 15 (a) (b) is a comparison diagram of the wiper assembly of the present invention and the wiping operation of the prior art,

16 is a diagram illustrating a state in which components of the wiper assembly of the prior art are separated.

Hereinafter, a preferred embodiment of a wiper for a vehicle according to the present invention will be described in detail with reference to the accompanying drawings. For reference, terms and words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to describe their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention. In addition, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical spirit of the present invention, so various alternatives that can be substituted for them at the time of application It should be understood that there may be equivalents and variations.

Reference numeral 1 denotes a wiper assembly, wherein the wiper assembly 1 includes an adapter 2 to which a wiper operating arm (not shown) is connected, and an adapter holder 21 that is constrained in a state surrounding the adapter 2 Wow, the frame holder (3) to which the adapter holder (21) is detachably coupled to expose the adapter (2) to the top, and the insertion end (41) on both left and right sides of the frame holder (3) Left and right primary levers 4a and 4b formed to protrude to both sides while being inserted, and a lever formed on the opposite side of each of the insertion ends 41 of the left and right primary levers 4a and 4b Left and right secondary levers 5a and 5b detachably connected to the joint 43, and four tertiary levers detachably connected to each of both ends of the left and right secondary levers 5a and 5b. 6), and a rubber blade 7 that is assembled in a state that is fitted horizontally to each of the crows 61 formed one at each end of the four tertiary levers 6 It is formed of elements.

In addition, the left and right sides of the frame holder 3 cover the left and right primary levers 4a and 4b, the left and right secondary levers 5a and 5b and four tertiary levers 6 The left and right air spoilers 8a and 8b covering the state are assembled to be detachable, respectively.

The wiper assembly (1) has an adapter (2) for detachably connecting and attaching a wiper operating arm (not shown) of a vehicle to the adapter holder (21) assembled on the opened upper portion of the frame holder (3). It is assembled to be detachable in a structure exposed to the upper side of (3), and the adapter holder 21 to which the adapter 2 is assembled is configured to be inserted and attached from the open upper part of the frame holder 3 , Since this configuration is similar to the existing wiper configuration, a detailed description thereof will be omitted.

In addition, since the adapter 2 is also similar to the structure for detachably connecting the existing wiper, a detailed description thereof will be omitted.

Insertion grooves for integrally coupling one insertion end 41 of each of the left and right primary levers 4a and 4b on the left and right sides of the frame holder 3 constituting the wiper assembly 1 31) are formed respectively, and the insertion end 41 of each of the left and right primary levers 4a and 4b is forcibly fitted into the insertion grooves 31 formed on the left and right sides of the frame holder 3 It can be assembled and combined in a manner, or, although not shown in the drawing, each of the left and right primary levers 4a and 4b, which is a metal material, is attached to an injection mold for injection molding the frame holder 3 with a synthetic resin material. One insertion end of each of the left and right primary levers 4a and 4b on the left and right sides of the frame holder 3 is a so-called insert injection method in which one insertion end 41 is previously inserted. 41) can be configured to be integrally combined with the inserted state.

In addition, in each of the left and right primary levers 4a and 4b, a lever joint 43 formed of a synthetic resin material is coupled to the other assembly end 42 formed on the opposite side of one insertion end 41, which is shown in FIG. As shown in the left and right primary levers (4a) (4b) each of the other assembly end (42) has a locking groove (42a) is formed in a symmetrical shape, the lever joint (43) is forcibly fitted The elastic protrusions 43c on both sides of which the groove 43a and the locking protrusion 43b protrude to face each other are provided. Therefore, when the other side assembly end 42 of each of the left and right primary levers 4a and 4b is assembled into the force fitting groove 43a of the lever joint 43, both elastic protrusions 43c ) Is elastically opened, and then the locking protrusion 43b is elastically coupled to the locking groove 42a by the elastic action of returning to its original state, so in the end, the left and right primary levers 4a and 4b Each of the other assembly end 42 is assembled in a state in which the lever joint 43 is rigidly integrally coupled.

In addition, the assembly protrusion 44 protruding from the bottom of the lever joint 43, and the connecting holes 51 and 52 formed in each of the left and right secondary levers 5a and 5b are shown in FIG. (A) As shown in the figure, if the left and right primary levers (4a) (4b) and the left and right secondary levers (5a) (5b) are arranged in a straight line, they are formed and assembled in a state that is shifted at a right angle to each other. It becomes impossible. Therefore, in order to assemble the assembly protrusion 44 formed at the bottom of the lever joint 43 into the connecting holes 51 and 52 formed in each of the left and right secondary levers 5a and 5b, (B) As shown in the figure, when the left and right secondary levers 5a and 5b are rotated to form a right angle with respect to the left and right primary levers 4a and 4b, the connecting long hole 51, 52 and the assembly protrusion ( 44) are aligned in a straight line with each other, so assembly is possible, and after assembly by inserting the assembly protrusion 44 into the connecting hole 51, 52, the left and right secondary levers 5a ( If assembled by rotating the 5b) at an angle of 90° so that it is in a straight line with the left and right primary levers 4a and 4b, the left and right secondary levers ( The connection lengths 51 and 52 of 5a) and 5b are shifted in a right angle with respect to the assembly protrusion 44, so that the assembly protrusion 44 and the connection lengths 51 and 52 are bound together. To be assembled.

Lever joints 53a and 53b formed at both ends of each of the left and right secondary levers 5a and 5b having the same structure as the lever joints 43 formed at both ends of the left and right primary levers 4a and 4b. (54a, 54b) are attached in a structure that is assembled by an assembly type or a force-fitting type, and the assembly protrusions (53, 54) each protrude from the bottom of each of the lever joints (53a, 53b) (54a, 54b). Is formed (see Fig. 9), and each of the assembly protrusions 53 and 54 is an assembly protrusion protruding from the bottom of each of the lever joints 43 of the left and right primary levers 4a and 4b. 44).

In addition, four tertiary levers 6 are connected and coupled to each of the lever joints 53a, 53b, 54a, 54b formed at both ends of each of the left and right secondary levers 5a and 5b. Each of the three tertiary levers 6 has an assembly hole 62 into which the assembly protrusions 53 and 54 protruding one by one at the bottom of the lever joints 53a, 53b, 54a, 54b are inserted and connected. Is formed.

The assembly protrusions 53 protruding one by one at the bottom of each of the four tertiary levers 6 and one assembly hole 62 formed in each of the above-described lever joints 53a, 53b, 54a, 54b 54) is an assembly protrusion 44 formed on the lever joint 43 of the left and right primary levers 4a and 4b and the connection length 51 formed in the left and right secondary levers 5a and 5b. ) It has the same structure as 52.

Therefore, each of the four tertiary levers 6 is a lever joint 53a, 53b, 54a, which is assembled at both ends of each of the left and right secondary levers 5a, 5b in the state before the blade 7 is assembled. 54b), four tertiary levers 6 are separately assembled one by one.At this time, each of the tertiary levers 6 has left and right secondary levers 5a and 5b attached to the lever joint 43 as described above. It is configured to assemble the blade 7 in a state in which the four tertiary levers 6 are arranged in a straight line with the left and right secondary levers 5a and 5b after assembling in the same manner as in assembly.

On the other hand, one crow 61 is formed at both ends of each of the four tertiary levers 6 to allow the blade 7 to be detachably assembled, and both ends of each of the four tertiary levers 6 The eight crows 61 formed in are improved to have a structure different from the configuration formed in a tertiary lever applied to a conventional wiper. That is, the crow 61 has been improved in a structure that does not directly hold the blade 7 but uses a separate assembly component (this will be described later) to hold the blade 7.

In addition, metal elastic rails 73 and 74 for imparting elastic force to the blade 7 itself are buried on both sides of the blade 7 before and after. Since the metal elastic rails 73 and 74 are similar to the configuration applied to the existing wiper structure, a detailed description thereof will be omitted.

A feature of the present invention is that each of the primary levers 4a and 4b constituting the wiper assembly 1 configured as described above, the left and right secondary levers 5a and 5b, and the four tertiary levers 6 It is composed of an elastic leaf spring material so that the wiper assembly 1 has its own elastic force, and the left and right primary levers 4a and 4b and the left and right secondary levers 5a and 5b each have their own In order to increase elasticity, the left and right primary protruding bridges 45 and 46, one secondary protruding bridge 55a, 55b, and the other secondary protruding bridge 56a and 56b protrude respectively. have.

In addition, the left and right primary levers 4a and 4b, left and right primary protruding bridges 45 and 46, and the left and right secondary levers 5a and 5b and one secondary protruding bridge 55a, 55b ), the other secondary protruding bridge (56a, 56b) is bent to form an inverted V-shape or an arc (see Figs. 4, 5 and 6) to reinforce the elastic force. have.

In addition, the crows 61 formed at both ends of each of the four tertiary levers 6 are assembled parts for directly holding the blades 7, that is, a crow that is rotatably assembled to the crows 61 on both sides. There is another feature in that it is configured to hold the blade 7 using the clip 63.

To this end, in the present invention, each of the left and right primary levers 4a and 4b, the left and right secondary levers 5a and 5b constituting the wiper assembly 1, and the four tertiary levers 6 are 0.6 It is composed of an elastic plate spring metal material with excellent elasticity having a thickness of ∼1.2mm, and the left and right primary levers 4a and 4b have an insertion end 41 on one side of the frame holder 3 It is formed to be bent toward the direction in which the left and right secondary levers 5a and 5b are combined while being integrally coupled to both sides, and each of the left and right secondary levers 5a and 5b has a longer length. The tenon 50a and the other short end 50b are formed in a curved state to form an arc, and each of the four tertiary levers 6 is formed to form a short arch.

In addition, the left and right primary levers 4a and 4b and the left and right secondary levers 5a and 5b each have left and right primary protruding bridges 45 and 46 to increase their own elasticity. And one secondary protruding bridge 55a and 55b and the other secondary protruding bridge 56a and 56b are punched to protrude upward.

The left and right primary protruding bridges 45 and 46 are partially cut into a narrow width through the process of punching an elastic plate spring metal material and projecting upwards, while the left and right primary levers 4a )(4b) is separated from the body and protrudes upward.

In addition, each of the left and right secondary levers 5a and 5b is divided into one long-formed tenon 50a and the other short-formed end 50b based on the connection long- hole 51 and 52 formed in a long hole type. (See Fig. 1 and Fig. 8)

In addition, in each of the left and right secondary levers 5a and 5b, one long tenon 50a and the other short end 50b have a long length at both ends of the left and right primary levers 4a and 4b. It is configured to be connected and coupled in a symmetrical state (see Fig. 3).

In addition, a part of the body of each of the one side tenon 50a and the other end 50b is narrowed through a punching process at each of the one side tenon 50a and the other end 50b of the left and right secondary levers 5a and 5b. The one secondary protruding bridge (55a) (55b) and the other secondary protruding bridge (56a) (56b), which are cut in width and formed separately, are formed to protrude upward, respectively, and protrude in a state separated from the one side tenon (50a) The formed secondary protruding bridges 55a and 55b have a long length, and the other secondary protruding bridges 56a and 56b protruding from the other end 50b are configured to have a shorter length. .(See Figs. 1, 3, 8)

On the other hand, the left and right primary levers 4a and 4b are formed of an elastic leaf spring metal material and are processed in a curved state to apply elastic force toward the left and right secondary levers 5a and 5b, In addition, each of the left and right secondary levers 5a and 5b is processed to form an arch shape that is curved downward toward both left and right sides with respect to the connecting long holes 51 and 52.

In addition, the left and right primary levers 4a and 4b are configured to have a stronger elastic force than the left and right secondary levers 5a and 5b and four tertiary levers 6 made of an elastic leaf spring metal material. have.

In addition, the left and right primary levers 4a and 4b, the left and right secondary levers 5a and 5b, and the four tertiary levers 6 each have an elastic plate spring metal having a thickness of 0.6 to 1.2 mm. It is made of material and can reduce the weight of the wiper assembly 1a compared to the existing wiper made of steel plate material, and also the left and right primary levers 4a and 4b and left and right secondary levers 5a ( 5b) When forming the left and right primary protruding bridges 45 and 46, one secondary protruding bridge 55a, 55b, and the other secondary protruding bridges 56a and 56b to protrude through punching processing, a punching hole 47 ) 50 is configured to be formed respectively.

The left and right secondary levers 5a and 5b are formed in a structure in which lever joints 53a and 53b and 54a and 54b are integrally coupled to the ends of each of the one side tenon 50a and the other end 50b. Each of the lever joints 53a, 53b, 54a, and 54b is configured to be assembled in a structure that is prefabricated to the ends of one tenon (50a) and the other end (50b), or a structure that is combined by force fitting It can be configured to be combined with.

For example, as shown in Fig. 9, assembly holes 57 are formed at both ends of each of the left and right secondary levers 5a and 5b, and are inserted into the lever joints 53a and 53b, 54a and 54b, respectively. The groove 58 and the locking protrusion 59 are formed, and the left and right secondary levers 5a and 5b are fitted at both ends of the lever joints 53a and 53b and 54a and 54b. When inserted into the groove 58, the locking protrusion 59 is elastically raised upward, and when the assembly hole 57 is inserted to the position of the locking protrusion 59, the locking protrusion 59 While returning to the original position by the elastic force, it can be configured to be inserted into the assembly hole 57 and coupled to the engaging structure.

In addition, assembly protrusions 53 and 54 are formed to protrude one by one at the bottom of each of the lever joints 53a, 53b, 54a, 54b coupled to both ends of the left and right secondary levers 5a and 5b, The assembly protrusions 53 and 54 have the same structure as the assembly protrusions 44 of the lever joint 43 that are assembled at the assembly ends 42 of the left and right prime levers 4a and 4b described above. Consists of.

In addition, four tertiary levers 6 are assembled and coupled to each of the lever joints 53a, 53b, 54a, 54b coupled to both ends of the left and right secondary levers 5a, 5b.

Each of the lever joints 53a, 53b, 54a, and 54b has an assembly protrusion 53 and 54 for assembling the four tertiary levers 6, one by one. Therefore, the assembly long hole 62 formed in each of the tertiary levers 6 should be assembled to the assembly protrusions 53 and 54, and the assembly protrusions formed one by one in each of the lever joints 53a and 53b ( 53) (54) and the assembly method of the assembly hole 62 formed in each of the four tertiary levers 6, the left and right secondary levers assembled on the assembly protrusions 44 of the lever joint 43 described above. It is the same as the method of assembling the connection lengths 51 and 52 of (5a) and (5b) (see FIG. 10), so a detailed description thereof will be omitted.

At both ends of each of the four tertiary levers 6, one crow 61 for attaching and detaching the blade 7 is integrally formed, and the crow 61 is formed in a ∩-shaped cross section. Assembly holes 61a are formed in a symmetrical shape on the surfaces facing each other.

A crow clip 63 is rotatably assembled to each of the both crows 61 integrally formed at both ends of the tertiary lever 6. The crow clip 63 has hinge protrusions 65 rotatably assembled to the assembly hole 61a on the outer sides of both sides facing each other and protrudes in a symmetrical manner, and the upper part of the crow clip 63 Both side inclined surfaces 67a and 67b inclined downward at a certain angle toward the blade 7 based on the upper protrusion 66 are formed symmetrically, and the crow clip 63 is formed on both sides facing each other. The blade 7 is bent in a direction facing each other at the lower end and is inserted into the slide assembly grooves 71 and 72 symmetrically formed on both sides of the blade 7 before and after the blade 7 Both support protrusions 64 for holding) are formed to protrude symmetrically.

And a slide in which both support protrusions 64 formed at the lower end of the crow clip 63 formed at both ends of each of the four tertiary levers 6 are slidably fitted on both sides of the blade 7 Above the assembly grooves 71 and 72 are embedded metallic elastic rails 73 and 74 for imparting elastic force to the blade 7 (see FIGS. 4 and 5).

Meanwhile, in the process of protruding left and right primary protruding bridges 45 and 46 through a punching process on each of the left and right primary levers 4a and 4b, the left and right primary protruding bridges ( A punching hole 47 is formed in the protruding portion where the 45) 46 are separated from the left and right primary levers 4a and 4b, and the left and right secondary levers 5a and 5b ) In the process of protruding one secondary protruding bridge (55a) (55b) and the other secondary protruding bridge (56a) (56b) in each, a punching hole (50) is formed in each of the one side tenon (50a) and the other side tenon (50b) It is structured to be.

Accordingly, punching holes 47 and 50 formed in each of the left and right primary levers 4a and 4b and the left and right secondary levers 5a and 5b at one tenon 50a and at the other end 50b, respectively. ) Causes air to escape, and this action makes the blade 7 installed to wipe the windshield surface of the vehicle during high-speed driving, so that it receives less air resistance during the wiping operation. There is an effect of making this normal and smooth.

When the wiper assembly 1 of the present invention configured as described above is installed on the windshield (not shown) of an automobile and the operation according to the wiping operation will be described as follows.

When the wiper assembly 1 is installed on the windshield of the vehicle, the left and right primary levers 4a and 4b are left and right secondary levers 5a by elastic pressing pressure of the wiper operating arm (not shown). (5b) is elastically pressed, and at the same time, the left and right secondary levers 5a and 5b are also in a state of elastically pressing the 4 tertiary levers 6 with their own elasticity, and the 4 tertiary levers Each of the (6) is in a state of elastically pressing the blade 7 with its own elasticity, so in the end, the blade 7 has an elastic pressing pressure of the wiper operating arm and the left and right primary levers 4a and 4b. , The left and right secondary levers 5a, 5b, and the four tertiary levers 6 are in a state in which they are elastically adhered to the windshield (not shown) of the vehicle by the action of concentrating their own elastic force.

As described above, the wiper assembly 1 installed on the windshield (not shown) of the vehicle is the pressing pressure of the wiper operating arm (not shown) and the left and right primary levers 4a and 4b. The wiper assembly 1 that elastically adheres the blade 7 to the windshield surface by the self-elasticity of the left and right secondary levers 5a and 5b and the four tertiary levers 6 The installation height to the operating arm (not shown) is lowered.

Because, by the pressing pressure of the wiper operating arm (not shown), the left and right primary levers 4a and 4b, the left and right secondary levers 5a and 5b, and the four tertiary levers 6 are each blade This is because (7) is elastically pressed, and accordingly, the blade 7 is elastically in close contact with the windshield surface (not shown) of the vehicle to perform the wiping operation.

The wiper assembly 1 includes left and right fly head levers 4a and 4b and left and right side levers 5a and 5b in a state in which the pressing pressure of the wiper operating arm (not shown) is not applied. The elasticity does not act on each of the four tertiary levers 6, and in this case, the elasticity does not act even on the crow clip 63 holding the blade 7. Therefore, as shown in FIG. 12, the crow clip 63 assembled on the crow 61 formed at both ends of the four tertiary levers 6 has the upper protrusion 66 having the crow 61 The upper inner surface is supported, and both inclined surfaces 67a and 67b maintain the same inclination angle Q with respect to the upper inner surface of the crow 61 (see enlarged view of Fig. 12).

Unlike the above, when the wiper operating arm (not shown) applies elastic pressing pressure to the wiper assembly 1 so that the blade 7 is in close contact with the windshield (not shown), the left and right primary Each of the levers 4a and 4b, the left and right secondary levers 5a and 5b, and the four tertiary levers 6 are elastically compressed by the pressing pressure of the wiper operating arm. Since the levers are in a state that elastically presses the blade 7 by adding their own elasticity, the two side crows 61 formed at both ends of each of the tertiary levers 6 are arrowed as shown in FIG. At the same time, the crow clip 63 assembled to the crow 61 is also horizontally moved like the crow 61. At this time, the crow clip 63 has a support protrusion 64 having a blade 7 ), while moving in a horizontal state along the slide assembly grooves 71 and 72, each of the crows 61 on both sides does not maintain a horizontal state when moving in the horizontal direction, and a crow clip ( Using the hinge protrusion 65 of 63) as a rotation starting point, it moves in a state rotated by a certain angle.

That is, as shown in the enlarged view of FIG. 13, as the tertiary lever 6 is elastically compressed, the crow 61 and the crow clip 63 move in the horizontal direction, and the crow clip 63 is While the crow 61 is moved while maintaining a horizontal state by the support protrusion 64 moving in the horizontal direction along the slide assembly grooves 71 and 72 of the blade 7, the crow 61 is a crow clip 63 The hinge protrusion 65 of is moved in a rotated state by a certain angle, and at this time, the upper part of the crow clip 63 assembled on the crow 61 is on both sides of the inclined surface ( Since the 67a) and 67b are inclined at a certain angle (Q) in a symmetrical state, the crow 61 can rotate the hinge protrusion 65 at a certain angle within the range allowed by each of the inclined surfaces 67a and 67b on both sides as the rotation starting point. Accordingly, each of the four tertiary levers 6 can apply pressure to the blade 7 through a resilient pressing action.

In other words, as the tertiary lever 6 is elastically compressed as shown in Fig. 13, when the crow 61 on the left side of the drawing moves in the left direction (refer to the arrow), the hinge protrusion 65 is moved to the rotation starting point. As the upper inner surface of the crow 61 is rotated at a certain angle in the clockwise direction (refer to the arrow), the upper inner surface of the crow 61 becomes close to the inclined surface 67b of the right part of the drawing of the crow clip 63. The angle (Q ₁ ) between the and the right inclined surface 67b of the crow clip 63 is in a narrowing state. Unlike this, the upper inner surface of the crow 61 rotated by a certain angle and the drawing of the crow clip 63 The angle Q ₂ between the inclined surfaces 67a on the left side becomes wider.

In addition, the crow 61 and the crow clip 63 on the right side of the drawing shown in FIG. 13 move horizontally in the right direction (refer to the arrow), and in this case, the right crow clip 63 also slides the blade 7 It moves while maintaining a horizontal state along the assembly grooves (71) (72), but the right crow (61) is constant in a counterclockwise direction (refer to the arrow) using the hinge protrusion (65) of the right crow clip (63) as a rotational starting point. It will rotate at an angle.

Therefore, in the present invention, even when the four tertiary levers 6 are made of an elastic leaf spring metal material, as the tertiary levers 6 are elastically compressed, both side crows 61 and both side crow clips 63 They can move in opposite directions to each other, and also apply elastic pressure to the blades 7.

However, unlike the present invention, if the crow formed at both ends of the turret lever as in the prior art is configured to directly hold the blade, even if the turret lever is made of an elastic material, both crows are horizontal Not only will it not be able to move, but you will not be able to expect the crimping action of the tertiary lever to press the blade elastically.

However, the present invention is a structure in which the crow clip 63 separately manufactured is coupled to the crow 61 formed at both ends of each of the four tertiary levers 6, and the tertiary lever 6 is elastically compressed. When the pressure is applied to the blade (7), the crow clip (63) on both sides moves horizontally together, the crow clip (63) is a slide assembly groove (71, 72) formed in the blade (7) It is possible to apply elastic pressure to the blade 7 while moving in a state that maintains a horizontal state along the line, and the mall crow 61 rotates at a certain angle with the hinge protrusion 65 as a rotation starting point. It will move.

On the other hand, the wiper assembly 1 of the present invention configured as described above is, for example, when the curvature of the windshield of the vehicle is not constant and there is a change in the curvature at the inflection point (T), as shown in FIG. In the drawing of (T), the right part of the drawing has a gentle curvature (WG ₁ ), while the left part of the drawing of the inflection point (T) is formed with a sharp curvature (WG ₂ ). One end of (7) can perform the wiping operation in a state in which the inclination angle out of the inflection point (T) is in close contact with the windshield surface of the sharp curvature (WG ₂ ) due to the elastic action of the tertiary lever 6. However, unlike the above, in the prior art wiper assembly 100, as shown in (B) of FIG. 15, the inclination angle at which one end of the blade 108 deviates from the inflection point T is abruptly curvature (WG ₂ : see left in the drawing). ), the space (S) is formed, so that the wiping operation cannot be normally performed.

As described above, in the present invention, the crow clips 63 assembled on both crows 61 formed at both ends of the four tertiary levers 6 hold the blade 7 and at the same time, the tertiary lever ( 6) As the crow clip 63 is elastically compressed, the crow clip 63 is configured to move in a state that maintains a horizontal state, and the crow 61 uses the hinge protrusion 65 of the crow clip 63 as a rotation starting point at a certain angle. Since it is configured to be rotated, each of the four tertiary levers 6 is in close contact according to the curvature of the windshield surface of the vehicle with an elastic pressing action while holding the blade 7 in a horizontal state to perform a wiping operation. It will be possible.

In addition, since the left and right secondary levers 5a and 5b apply a pressing force equally and elastically to each of the four tertiary levers 6, the blade support formed at both ends of each of the four tertiary levers 6 The rubber blade 7 assembled on the earth 61 is in close contact with equal elasticity according to the curvature of the windshield surface of the vehicle to perform the wiping operation, and in this way, the blade that is in close contact with the windshield surface of the vehicle with equal elasticity (7) When the wiper operating arm (not shown) is operated at a predetermined angle, the entire wiping area can be wiped with an even adhesion force.

In addition, the left and right primary levers 4a and 4b and the left and right secondary levers 5a and 5b of the wiper assembly 1 each have an inverted V-shaped or arch-shaped cross section of the elastic plate spring metal material. ), so each of the left and right primary levers 4a and 4b and the left and right secondary levers 5a and 5b can hold the blade 7 in close contact with the windshield of the vehicle with increased strong elasticity. There will be.

The wiper assembly 1 is formed in the process of forming the left and right primary protruding bridges 45 and 46 to increase elasticity to each of the left and right primary levers 4a and 4b through a punching process. In order to increase elasticity to each of the punching holes 47 and the left and right secondary levers 5a and 5b, one secondary protruding bridge 55a, 55b and the other secondary protruding bridge 56a and 56b are subjected to a punching process. Air escapes through each of the punching holes 50 formed in the forming process. Therefore, even if air resistance acts on the wiper assembly (1) installed on the windshield of a vehicle during high-speed driving, air is formed in each of the left and right primary levers 4a and 4b and the left and right secondary levers 5a and 5b. The blade 7 receives less resistance from the air, so there is no lift on the windshield surface of the vehicle, and the left and right priority levers 4a, 4b and The left and right secondary levers 5a and 5b and the four tertiary levers 6 each have a resilient action, so that the wiping operation can be performed normally and smoothly in a state that is elastically close to the windshield surface of the vehicle.

As described above, since the wiper assembly 1 of the present invention has its own elastic force, the blade 7 for wiping the windshield of the vehicle is evenly adhered to the windshield surface of the vehicle according to the curvature of the windshield to perform the wiping operation normally. At the same time, the left and right primary levers 4a and 4b of the wiper assembly 1, the left and right secondary levers 5a and 5b, and the four tertiary levers 6 respectively Is composed of a thin elastic plate spring metal material to reduce weight, and the left and right primary levers 4a and 4b and the left and right secondary levers 5a and 5b respectively have left and right Each of the right primary protruding bridges 45 and 46, one secondary protruding bridge 55a, 55b, and the other secondary protruding bridges 56a, 56b is formed to protrude through a punching process, thereby increasing its own elasticity and punching. By allowing air to escape through the holes 47 and 50, the effect of receiving less air resistance can be expected.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope of the technical spirit of the present invention. It will be obvious to those of ordinary skill in

{Explanation of sign}

1: wiper assembly 2: adapter

21: adapter holder 3: frame holder

4a, 4b: left and right primary lever

41: insertion end 42: assembly end

43: lever joint 44: assembly protrusion

45,46: left and right primary protruding bridges

47,50: punching hole 5a,5b: left, right secondary lever

50a: one side tenon 50b: the other end

51,52: connection length 53a,53b,54a,54b: lever joint

53,54: assembly protrusion 55a,55b: secondary protruding bridge on one side

56a,56b: Secondary protruding bridge on the other side

57: assembly worker 58: fitting groove

59: stumbling protrusion 6: tertiary lever

61: crow 62: assembler

63: crow clip 64: support protrusion

65: hinge protrusion 66: upper protrusion

67a,67b: slope

7: blade 71,72: slide assembly groove

73,74; Metal elastic rails 8a, 8b: left and right air spoilers

Claims (7)

1. An adapter mounted on the wiper operating arm, an adapter holder constraining the adapter, a frame holder coupled so that the adapter holder and the adapter constrained thereto are exposed to the upper side, each of which is disposed on the left and right sides of the frame holder to face each other. Left and right secondary levers each of which one end is connected to the left and right primary levers coupled to the left and right sides of the frame holder, and two lever joints respectively coupled to the other end of the left and right primary levers, the Four tertiary levers are provided to be connected to four lever joints formed at both ends of each of the left and right secondary levers, and the four tertiary levers are fitted horizontally into the eight blade support holes formed at both ends of each of the four tertiary levers. A wiper for automobiles composed of a wiper assembly including a blade made of rubber material to be assembled,

   Each of the left and right primary levers, the left and right secondary levers, and the four tertiary levers are made of an elastic plate spring metal material having elasticity,

   Each of the left and right primary levers has left and right primary protruding bridges that are cut out by punching and protrude upward,

   Each of the eight crows formed at both ends of the four turret levers moves along the slide assembly groove of the blade like a crow when the turret lever is elastically pressed while holding the blade made of rubber. A wiper for a vehicle, characterized in that configured to include a crow clip that is assembled to enable rotation of the crow.
2. The method of claim 1,

   The left and right secondary levers are divided into one tenon formed long in length and the other end formed short in length based on an assembly connection hole prefabricated to the other end of each of the left and right primary levers. A wiper for automobiles, characterized in that the one side secondary protruding bridge and the other side secondary protruding bridge having a long and short length while being cut by punching and protruding upwardly are formed at each of the tenon and the other end.
3. The method of claim 1,

   Each of the left and right primary levers and the left and right secondary levers is bent in a cross section selected from an inverted V-shape or an arcuate shape.
4. The method of claim 2,

   Each of the left and right primary levers and the left and right secondary levers is formed during punching to form left and right primary protruding bridges, one secondary protruding bridge, and the other secondary protruding bridge to allow air to escape. A wiper for a vehicle, characterized in that configured so as to be formed respectively.
5. The method of claim 1,

   Assembling holes for assembling the crow clip rotatably are formed on each side of each of the eight crows formed at both ends of the four tertiary levers, and both sides of the crow clip are hinged on both sides that are rotatably assembled to the assembling holes. Car wiper, characterized in that configured to protrude symmetrically.
6. The method of claim 5,

   The upper portion of the crow clip is configured such that both side inclined surfaces inclined at a certain angle toward the blade direction are formed symmetrically with respect to the upper protrusions formed to protrude toward the width direction of both hinge protrusions formed symmetrically. Car wiper.
7. The method of claim 5,

   A wiper for a vehicle, characterized in that the lower end of the crow clip is assembled to move along both slide assembly grooves formed on the blade and at the same time, support protrusions bent in a direction facing each other to hold the blade are formed. .

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