JP3060827B2 - String-type wiper device that prevents icing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiper device for a vehicle outside mirror having a structure in which a string is used as a member for wiping, the moisture adhering to the reflecting surface of the mirror body and the water entering the inside of the mirror body. Is improved to prevent freezing. However, preventing freezing includes both the prevention of freezing and the melting of frozen ice.

[0002]

2. Description of the Related Art FIG. 5 is a front external view of a vehicle outside mirror equipped with a conventional wiper device. The mirror body 4 is fixed to the mirror body 3, and the mirror body 4 is supported by the mirror housing 12 via the mirror body 3. Reference numeral 23 denotes a mirror base, which is fixed to the vehicle body, and supports the mirror housing 12. The mirror housing 1
2, a wiper arm shaft 21 is provided, and a wiper arm 24 is attached to the wiper arm shaft 21. When the wiper arm shaft 21 reciprocates,
The wiper arm 24 reciprocates while supporting the wiper blade 29, and the wiper blade 29 slides on the surface of the mirror body 4 to wipe it. The conventional wiper device for a mirror shown in FIG. 5 has a poor appearance because the wiper arm 24 and the wiper blade 29 appear in the outer appearance even while the wiper operation is paused, and the commercial value is reduced. Assuming now,
An eave-shaped wiper storage section 20 is provided above mirror housing 12.
When the wiper blade 29 is provided (shown by a virtual line), the wiper blade 29 can be stored and hidden, but the wiper arm 24 cannot be hidden. Further, the wiper arm 24 and the wiper blade 29
Is a member having a large inertia among the constituent members of the wiper device. Reciprocatingly driving such a member having a large inertia tends to cause noise (operation noise is generated if there is play). In order to solve the above-mentioned problem, it is conceivable to slide the string-shaped member along the surface of the mirror main body and perform the wiping action by the string-shaped member. Since the string-shaped member has a small inertia, the required driving force is small, and if the string-shaped member is moved to one corner of the mirror body during the stop of the wiper operation, the appearance is hardly impaired. The above-mentioned string-type mirror wiper device is an unknown device (Japanese Utility Model Application No. 4-82047, mirror wiper device) which is separately filed by the present applicant. For convenience of explanation, it is abbreviated to the invention of the earlier application. FIG. 6 is a partially cutaway front view showing an embodiment of a mirror wiper device according to an unknown prior application. The mirror body 4 is fixed to the mirror body 3. The reflecting mirror, which is an optical component, is sometimes called a mirror, and the entire assembly using the above-mentioned reflecting mirror is sometimes called a mirror. And the assembly is called a mirror device to distinguish it. Position one around the back of the mirror body 3
The driving pulley 22 and the three idler pulleys 25 are arranged, and an endless annular orbiting belt 26 is wound around these four pulleys. A string 27 is stretched closely to the surface of the mirror body 4, and one end 27 a of the string 27 is in contact with an edge (represented by a hidden line) of the mirror body 4 and turns around to the back side of the mirror body 4, and Installed. FIGS. 7A and 7B are schematic cross-sectional views showing both ends of a string in the above embodiment. FIG. 7A shows a state in which one end of the string is attached to a circling belt, and FIG. The other end is shown attached to a tensioner and being tensioned. Pulley 22 shown in FIG.
Is a driving pulley described above with reference to FIG. 6, and is rotated by a motor (not shown) via the transmission belt 17 and rotates the circling belt 26 around which it is wound. One end 27a of the string 27 is fixed to the orbiting belt 26. In FIG. 6, the pulley 22 is rotated in the direction of the arc arrow a, and accordingly, the circling belt 26 is circulated as indicated by arrows b and c. String 2 attached to the orbiting belt 26
7, one end 27a is moved in the direction of arrow c.
The position is a '. Along with this, the string 27 at the position drawn by the solid line is moved to the position 27 'shown by the dashed line,
It is drawn around like and tilts. As it will be readily appreciated from FIG. 6, the straight line-shaped portions of the string 2 7 (solid line), who linear portion of the string 27 '(dashed line) is long. Therefore, the tensioner 2 provides a constant tension so that the string is not loosened or broken.
8 are provided. (This tensioner 28 is shown in both FIG. 6 and FIG. 7B, but is shown in FIG. 7B with its central portion broken and cut). The tensioner 28 has a string 2 in an elongated cavity (pipe) 28a.
7 is drawn in. 28
b is a tensioner coil spring that applies a force in the direction of pulling the string 27 into the conduit 28a. String 27, or withdrawn from inlet 28c of the tensioner, with or drawn from the inlet 28c, and slide along the substantially while being kept at a constant tension, the surface of the mirror body 4, to wipe it.

[0003] One end of the string 27 is
6 (for example, point 27 shown in FIG. 6).
a, 27a ') orbit together with the orbiting belt 26. When the belt 26 is stopped when this point comes near the tensioner inlet 28c (for example, point e), the string 27 also stops and does not appear in the appearance. The reason is that it is hidden by the eaves-shaped portion 3a shown in FIG. Further, in this state, most of the string 27 is drawn into the tensioner 28, and its tip reaches the stroke end 27c. One end of the string at point e
Almost all of the surface of the mirror main body 4 (all of the area appearing in the appearance) is moved by the string 27 until the point 7a moves in the directions of the arrows b and c with the rotation of the orbiting belt 26 and reaches the point f. It is wiped off, leaving no wiping residue.

In the wiper device according to the invention of the prior application shown in FIG. 6, a tensioner 28 for applying a substantially constant tension to the string 27 utilizes the compression and expansion of a coil spring 28b. According to this configuration, the tension applied to the string 27 is substantially proportional to the amount of distortion of the coil spring 28b.
As the string 7 is pulled out, the tension increases, and as the string 27 is pulled into the tensioner 28, the tension decreases, and the tension applied to the string varies relatively severely. When the tension of the string fluctuates, the orbiting belt 2
The motor (not shown) that rotates the motor 6 causes a load variation, and unless the motor has a large capacity, the operation may not be performed smoothly. In order to prevent the above problem (fluctuation in the tension of the string), the coil spring 2
It is effective to use a spring of the spring type instead of 8b. That is, (a) a string winding drum which is rotatably supported by a drum shaft and has one end of the string attached thereto and winds and unwinds the string;
(B) When the outer peripheral end is attached to the string winding drum and the inner peripheral end is formed of a mainspring attached to the drum shaft, variation in the tension of the string is significantly reduced. According to the above configuration, since the inner peripheral end of the mainspring is attached to the drum shaft and the outer peripheral end of the mainspring is attached to the winding drum, when the string wound around the winding drum is pulled out, ,
The mainspring is deformed so as to be closely wound, and tension is applied to the string by its elastic restoring force. Since the rate of change of the spring load with respect to the change in the rotation angle position of the mainspring is significantly smaller than the rate of change of the spring load with respect to the change in the length of the coil spring, the string tension caused by the winding and unwinding of the string is reduced. Very little change and almost constant tension. Therefore, the load fluctuation of the driving motor is small, and a smooth operation can be performed even with a small-capacity driving motor. The same effect (reduction in tension fluctuation) can be obtained by simplifying the above configuration, omitting the winding drum, and attaching the end of the string to the outer peripheral end of the mainspring spring. The above configuration (tensioner using a mainspring) is an unknown invention (Japanese Patent Application No. 5-335127, string-type wiper device) which is separately filed by the present applicant. For convenience of explanation, it is hereinafter abbreviated as the prior invention.

Next, an embodiment of the invention of the prior application will be described with reference to FIGS. FIG. 8 is a front view showing an embodiment of the string type wiper device according to the invention of the prior application, which is partially cut away and drawn. In the mirror wiper device according to the invention of the prior application shown in FIG. 6, the orbiting belt 26 is wound around four pulleys. In this embodiment, seven idler pulleys 25 and one drive are used. Pulley 2
2 'is provided around the orbiting belt 26. The drive pulley 22 'is rotated by a drive gear 33a rotated by a motor (not shown) via intermediate gears 33b and 33d and a driven gear 33d. The driven gear 33d and the drive pulley 22 'are fixed to each other concentrically. One end 27a of the string 27 is attached to the orbiting belt 26. The other end of the string 27 is wound around a string tensioner 35 having a string winding drum 35a, and is provided with a substantially constant tension. FIG. 9 shows the CC of the string tensioner provided in the embodiment shown in FIG.
It is a sectional arrow view. A joint ball 32c is fixed to one end of a string 27 as a wiping member, while a joint bracket 32d is attached to the orbiting belt 26, and the joint ball 32c is fixed to the joint bracket 32d. A portion 27b near the other end of the string 27 is attached to and wound around the string winding drum 35a. The drum shaft 35b that rotatably supports the string winding drum 35a is a drum cover 3
5c and is fixed to the mirror body 3 '. 35e is a slit provided on the drum shaft 35b. 35d is a mainspring. The mainspring is a spring that has been widely used as a power source for mechanical hand-wound watches and toys in the past.
This is a known member described in a dictionary. The inner peripheral end of the mainspring is engaged with the split,
The outer peripheral end of the spring is attached to the string winding drum 35a. Prior to attaching the other end of the string 27 to the string winding drum 35a, the string winding drum 35a is turned in advance to bend in a direction to increase the number of spiral windings of the spring 35d ( When to) put in a state of so-called spiral spring is wound, the string take-up drum 35 a by the elastic restoring force of the spiral spring the spring 35d is rotated, involving the other end near 27b of the string 27, a substantially constant tension Acts to give. FIG. 10 is an exploded perspective view in which, of the constituent members shown in FIG. 9 described above, main members involved in the action of winding the string and giving tension are extracted and drawn. Then, FIG. 11 shows for explaining operation of the above embodiment, the effect, (A) is entrained string in coil springs used in the string wiper according to the prior application invention the length and the string tension ( (B) is a chart showing the relationship between the string winding length and the string tension (spring load) in the mainspring used in the invention of the prior application. In the coil spring prior application invention illustrated in FIG. 11 (A), the string tension by a change dimension L of the reel length of the string changes by the force F ₁ as shown. Here, F ₁ / L is a spring constant. On the other hand, the spring spring of the prior application shown in FIG. 11B has a small spring constant F ₂ / L, and the change amount F ₂ of the string tension is remarkable even if the winding length L of the string changes. small. That is, the tension of the string 27 is kept substantially constant.

(See FIG. 5) A macro structure of a vehicle outside mirror, which is a target device to which the wiper device is mounted, has a mirror base 23 fixed to a vehicle body, and the mirror housing 12 is supported by the mirror base 23. Is done. On the other hand, a mirror body 4 is fixed to a mirror body (called a mirror holder) 3. In some cases, the mirror body 3 is fixedly mounted on the mirror housing 12. In addition, the mirror body 3 is supported by the mirror housing 12 so as to be tiltable, and remote control from the driver's seat is performed. In some cases, tilting operation can be performed. The wiper device according to the invention of the prior application or the invention of the prior application is composed of the above two methods (mirror body fixed, mirror body tilting remote control).
Can be applied to any of the above. In any case, there is an advantage as a string type wiper device. FIG. 12 is a sectional view taken along a plane perpendicular to the mirror main body, showing a wiper device drive system when a string-type wiper device is mounted on a remote control type outside mirror. The mirror body 3 to which the mirror main body 4 is fixed is supported by the mirror housing 12 via the ball joint 2 so as to be tiltable. A drive unit for remote control is installed in the mirror housing 12. Reference numeral 1 denotes a housing of the driving unit. In FIG. 12, reference numeral 22 denotes the driving pulley described with reference to FIG. 6, and reference numeral 26 denotes a circling belt. 19 is a pulley shaft of the pulley 22. A drive motor (not shown) is provided in the drive unit housing 1.
Is installed, and rotationally drives the worm wheel 13b via the worm 13a. The wall wheel 13b is integrally connected to the drive shaft 14, and the transmission shaft 15 is connected to the drive shaft 14 so as to be relatively slidable in the axial direction and non-rotatable about the axis. ing. The transmission shaft 15 is rotated by the drive motor (not shown), and rotates the drive pulley 22 via the pulley 16 with the universal joint and the transmission belt 17. The driving pulley rotates the orbiting belt 26. FIG.
FIG. 3 is an enlarged view showing a detail of a portion A surrounded by a chain line circle in FIG. The pulley 16 with the universal joint is provided with the mirror body 3.
A rotary shaft 16a rotatably mounted on the rotary shaft; a pulley 16b fixed to the rotary shaft;
The universal joint 16c is connected to the transmission shaft 15 described above with reference to FIG. The above-described pulley 16b is wound around and drives the transmission belt 17 shown in FIG.

The invention according to the prior application described above with reference to FIGS. 5 to 13 and the string-type wiper device of the invention according to the prior application have a structure in which one end of a string is attached to a circling belt. Thereby, when the string is not performing the wiping operation, the effect is obtained that the wiping component does not appear in the appearance and that the mirror body can be wiped without leaving any wiping. As a string-type wiper device having a configuration different from the above, a wiping operation is performed by attaching a string to a wiper arm similar to the wiper arm in the conventional wiper device (that is, the wiper blade attached to the wiper arm is replaced by the string). It is possible. With such a configuration, the wiper arm is provided, so the effect of not being noticeable in appearance at rest can not be obtained, but the structure is simple, there is no wiping residue on every corner of the mirror surface, and it adapts well to the curved surface of the mirror body The effect that can be performed.
FIG. 14 is a front view for explaining the configuration and operation of a string-type wiper device having a structure including a wiper arm.
This device is hereinafter referred to as a string-type wiper device (abbreviation / prior art) according to an unknown prior art. Reference numeral 41 denotes a mirror body to which a mirror body 42 is fixed. The reflection surface of the mirror main body 42 is exposed at the front opening 41a of the mirror body. FIG. 15 is a cross-sectional view of the string-type wiper device having the wiper arm shown in FIG. 1 described above. A wiper arm 44 is provided on the mirror body 41. In the present example, it penetrates the mirror main body 42 and protrudes from its surface. This wiper shaft 43 is
It can be reciprocated by driving means (not shown). The base end of the wiper arm 44 is attached to the wiper shaft 43, and the wiper arm 44 is tilted back and forth as shown by the reciprocating arc arrows d and d 'shown in FIG. The wiper arm 44 of this example is of a type that can be extended and retracted, and a telescopic rod 44b is slidably fitted in a cylinder 44a on the root side. A guide ball 4 is attached to the tip of the telescopic rod 44b.
A guide groove 41b formed along the edge of the opening 41a of the mirror body 41 guides the guide ball 44c, as shown in FIG. As a result, as indicated by the imaginary line in FIG.
The telescopic rod 44b expands and contracts with the tilting of. As shown in FIG. 15, a string 27 is fixed near the distal end of the telescopic rod 44b. The string 27 is routed in contact with the surface of the mirror body, and passes through the tensioner inlet 45 into the mirror body 41 as shown in FIG. 14 (within the mirror body means between the mirror body and the mirror body 42). ), And the other end of the string 27 is attached to a tensioner and is provided with a substantially constant tension. In FIG. 14, the tensioner is hidden by the mirror body 42, but has the same or similar configuration as that in FIGS. 9 and 10 (the invention of the prior application). With the above configuration,
In the string-type wiper device according to the prior art shown in FIGS. 14 and 15, the string 27 slides along the surface of the mirror body 42 with the reciprocating tilt of the wiper arm 44 to perform the wiping operation.

[0008]

SUMMARY OF THE INVENTION In the above-described invention of the prior application, the invention of the prior application, and the previously unknown string-type wiper device according to the prior art, (a) the mirror body and the string are exposed, The mirror body is exposed to wind and snow and rain and dew. (B) Car wash water and rain and snow may enter the mirror body and wet the inside of the tensioner. Are common. If the moisture adhering to the surface of the mirror body freezes, the function as a reflecting mirror is hindered, and the reflected image behind becomes difficult to see. Such a defect is the same when snow adheres or when frost forms on the mirror body surface. In particular, in the string type wiper device, there is a possibility that the string freezes on the mirror main body, hinders the wiper operation, or the string is damaged. Also,
If the water entering the tensioner freezes, the wiper operation is hindered. The present invention has been made in view of the circumstances described above, and has as its object to provide a string-type wiper device capable of preventing various troubles related to freezing of water.

[0009]

SUMMARY OF THE INVENTION The basic principle of the present invention created to achieve the above object is to provide a heater for preventing or melting ice. However, in order to perform effective heating, the place where the heater is installed is specified as “between the mirror body and the mirror body”. Although an electric heater is convenient as the above heater, the heater in the present invention is a general term for heating means,
It is not necessarily limited to an electric heater. To achieve the above object based on the principle described above,
The configuration of the first invention of the wiper device, a plurality of pulleys have been disposed along the periphery of the fixed mirrors body in the mirror body, seat revolving belt of the endless annular the plurality of pulleys is wound And the mirror body
In the space surrounded by the
Tensile tensioning the string by the elasticity of the pulling
With conditioner "are provided, with one end of the movably arranged strings near the surface of the mirror body is not attached, et al. Is in the circulation belt, the other end of the string is attached to the tensioner, feeding A wiper device which is tensioned so as to be retractable, wherein a heater is disposed between the mirror body and the mirror body, and the heater is disposed between the mirror body and the mirror body and the mirror body. The member and the string are heated so as to prevent icing of water adhering to the mirror surface and water entering the mirror body.

The configuration of the second invention created by applying the above-mentioned principle to an unknown prior art having a wiper arm is as follows.
A wiper shaft attached to the mirror body fixed to the mirror body so as to be capable of reciprocating rotation; a drive means for reciprocatingly rotating the wiper shaft; and a wiper arm fixed to the wiper shaft and tiltable reciprocally. And before
Surrounded by the mirror body and the mirror body
In the space where
A tensioner for applying tension to the mirror body, one end of a string movably disposed near the surface of the mirror body is attached to the tip of the wiper arm, and the other end of the string is attached to the tensioner. A wiper device which is tensioned so that it can be extended and retracted, wherein a heater is disposed between the mirror body and the mirror body, and a mirror body, and a mirror body and a mirror body are provided between the mirror body and the mirror body. It is characterized in that the arranged members and the strings can be heated to prevent moisture adhering to the mirror surface and water separation and icing that has entered the mirror body.

[0011]

According to the above-mentioned means, since the heater is provided between the mirror body and the mirror body, there is no fear that the heater appears in the appearance and impairs the design value, and the mirror body is connected to the mirror body. Since it is housed between the mirror and the mirror body, there is no danger of damage due to contact with an external obstacle without taking any other protective means. In the string-type wiper device, the components that are susceptible to ice formation are disposed between the mirror body and the mirror body or near the mirror body and the mirror body. Since the above “components that are susceptible to ice formation” can be effectively heated, the heat efficiency is good and energy consumption is small. Further, for the same reason, the thawing of the frozen components can be quickly advanced. Furthermore, placed near the surface of the mirror body
The strings that make up the tensioner
Since tension is applied by the elasticity of the
Close contact with the surface of the mirror body without causing
Performs the wiping action without leaving any residue.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, referring to FIGS.
An embodiment of the present invention will be described. FIG. 1 shows an example in which the first invention is applied to the inventor of the prior application and the string-type wiper device according to the invention of the earlier application, and is improved. The mirror body to which the mirror body is fixed and a part of the mirror housing are cut. It is a schematic partial cross-sectional view that is drawn, and does not necessarily realistically represent the shape and dimensions of the entity because it is schematically illustrated. This embodiment is based on the string-type wiper device shown in FIG. 9 described above, and is an improved version of the wiper device. The same reference numerals as those in FIG. These are the same or similar components. FIG. 1 is different from FIG. 9, that is, the points improved by applying the present invention are as follows. That is, the heater 51 is provided between the mirror body 4 and the mirror body 3 '. Specifically, an electric heater 51 is attached to the back surface of the mirror body 4 in close contact therewith. With this configuration, the mirror body 4 is directly heated and the temperature rises, so that the effects of melting the ice adhered to the reflection surface of the mirror body 4 and preventing freezing and frost formation are remarkable. . Further, the space surrounded by the mirror body 4 and the mirror body 3 'is heated and the temperature rises. For example, since the tensioner in the invention of the prior application is disposed between the mirror body 4 and the mirror body 3 'as described with reference to FIG. 9 described above, the tensioner is disposed between the mirror body and the mirror body. The heater 51 extremely effectively generates heat for preventing the tensioner from freezing and for freezing and thawing the tensioner. FIG.
FIG. 3 is an electric circuit diagram showing the power supply means of the electric heater in the first invention shown in FIG. 1 described above, and this electric circuit diagram is also applied to the power supply means of the electric heater in the second invention. The electric heater 51 is disposed so as to face almost the entire surface of the mirror body 4, and is connected to a DC power supply (vehicle-mounted battery in this embodiment) 52 via a switch 52.
When the switch 53 is closed, the heater 51 is energized, so that the frozen string type wiper device can be thawed and freezing can be prevented. In this way, it is possible to solve the problem related to freezing of the string type wiper in the cold region, and to improve the wiping operation reliability and the durability. FIG. 3 shows a state in which the second invention is applied to a string-type wiper device having a structure including a wiper arm according to the prior art, in which a wiper arm with a string attached thereto, a mirror main body, and a part of a mirror body are cut away. It is a typical partial sectional view. This embodiment is an example in which the present invention is applied to the string-type wiper device according to the prior art shown in FIG. 15 and improved by applying the present invention. The difference between FIG. 1 and FIG. Body 4
That is, the electric heater 51 ′ was attached to the back surface of the device 2 in close contact. The power supply circuit of the electric heater 51 'is the same as that of FIG.
The heater 51 is read as a heater 51 '. FIG.
Shows a joint bracket for fastening the string to the orbiting belt in this embodiment, (A) is an exploded perspective view,
(B) is a perspective view in the middle of the assembly, and (C) is a perspective view in the completed state of the assembly. The joint bracket shown in FIG. 4 is the joint bracket 3 of the prior invention shown in FIG.
This is a component corresponding to 2d. (See FIG. 4 (A).) The orbiting belt 26 of this example has a through hole 26a orthogonal to the circumferential direction.
Are provided, while a joint ring 43 formed by bending a wire-like material is formed. Arrow leg h of the joint ring
As shown in FIG. 7B, the leg-like portion is inserted into the through hole 26a as shown in FIG. 6B and the tip of the leg portion is projected from the through hole and bent as shown by the arrow i. In this state, the joint ring 43 can swing freely like a reciprocating arc arrow j-j ', so that it is suitable for attaching one end of the string to this. 4C shown in FIG. 4C is the ball of the ball joint described with reference to FIG. 9 (the invention of the prior application).

[0013]

According to the present invention, since the string is used as a member for wiping the mirror body surface,
(A) The contact area between the string, which is the wiping member, and the surface of the mirror body is small, and the driving force of the wiper device drive unit is reduced because there is no large and heavy member that reciprocates like the wiper arm in the conventional example. be small, because there is no weight member that reciprocates as (b) the wiper arm, even if there is play or backlash in the driving system without fear of generating abnormal noise, the string is (c) wiping member , Tensi
Because it is tensioned by Yona's spring,
(D) Even if the surface of the mirror main body is a complicated convex curved surface, the string as the wiping member is adapted to the surface of the mirror main body because the mirror body is pressed evenly against the surface of the mirror main body. Adheres and plays a reliable wiping action,
(E) Since the string as the wiping member is a thin member and its color tone can be selected, the appearance can be made inconspicuous. Further, in the device of the present invention, since the heater is provided between the mirror main body and the mirror body, there is no possibility that the heater appears in the appearance and spoil the design value, and the mirror main body and the mirror body are Therefore, there is no danger of damage due to contact with an external obstacle without taking any other protective means. In the string-type wiper device, components that are susceptible to ice formation include a space surrounded by the mirror body and the mirror body,
Since the heater is disposed immediately adjacent to the surface of the mirror body, the heater is disposed between the mirror body and the mirror body, thereby effectively heating the above “components that are susceptible to ice formation”. Therefore, thermal efficiency is good and energy consumption is small. Further, for the same reason, there is an excellent practical effect that the thawing of the frozen frozen constituent members can be rapidly advanced.

[Brief description of the drawings]

FIG. 1 shows an example in which the first invention is applied to an improvement of the string type wiper device according to the invention of the prior application and the invention of the prior application, in which the mirror body to which the mirror body is fixed and a part of the mirror housing are cut. FIG. 2 is a schematic partial cross-sectional view, and does not necessarily realistically represent the shape and dimensions of the entity because it is schematically illustrated.

FIG. 2 is an electric circuit diagram showing the power supply means of the electric heater in the first invention shown in FIG. 1 described above, and this electric circuit diagram is also applied to the power supply means of the electric heater in the second invention. Is done.

FIG. 3 shows a state in which the second invention is applied to a string-type wiper device having a structure including a wiper arm according to the prior art, in which a wiper arm and a mirror main body to which a string is attached and a part of a mirror body are cut away and drawn. FIG. 3 is a schematic partial cross-sectional view.

4A and 4B show a joint bracket for fastening a string to a circling belt according to the present embodiment, wherein FIG. 4A is an exploded perspective view, FIG. 4B is a perspective view in the middle of assembly, and FIG. It is a perspective view of.

FIG. 5 is a front external view of a vehicle outside mirror including a wiper device according to a conventional example.

FIG. 6 is a partially cutaway front view showing an embodiment of a mirror wiper device according to a previously undisclosed invention.

FIG. 7 is a schematic cross-sectional view showing both ends of a string in the embodiment, where (A) depicts a state where one end of the string is attached to a circling belt, and (B)
Depicts a state in which the other end of the string is attached to a tensioner and is being tensioned.

FIG. 8 is a front view showing an embodiment of the string-type wiper device of the invention of the prior application, partially cut away and drawn.

FIG. 9 is a cross-sectional view of the string tensioner provided in the embodiment shown in FIG.

FIG. 10 shows the components shown in FIG.
It is the exploded perspective view which extracted and drawn the main member which participates in the effect | action which winds a string and gives a tension.

[11] the action of the above embodiment, those shown in order to explain the effect, (A) is entrained string in coil springs used in the string wiper according to the prior application length and the string tension (or spring (B) is a chart showing a relationship between a string winding length and a string tension (spring load) in a mainspring used in the present invention.

FIG. 12 is a sectional view taken along a plane perpendicular to the mirror main body, showing a wiper device drive system when a string type wiper device is mounted on a remote control type outside mirror.

FIG. 13 is an enlarged view showing a detail of a portion A surrounded by a chain line circle in FIG.

FIG. 14 is a front view for explaining the configuration and operation of a string-type wiper device having a structure including a wiper arm.

FIG. 15 is a cross-sectional view of the string-type wiper device having the wiper arm shown in FIG. 1 described above.

[Explanation of symbols]

3 ... Mirror body, 4 ... Mirror body, 12 ... Mirror housing, 17 ... Transmission belt, 20 ... Eave-shaped part, 22 ... Driving pulley, 23 ... Mirror base, 24 ... Wiper arm, 25 ... Idler pulley, 26 ... Rotating Belt, 27,
27 '... string, 27a, 27a' ... one end of string, 27b ... other end of string, 27c ... stroke end of string, 28 ... tensioner, 28a ... conduit, 28b ... tensioner coil spring, 28c ... tensioner inlet, 29 ... Wiper blade, 33a: drive gear, 33b, 33c: intermediate gear, 33d: driven gear, 3
5. String tensioner, 35a String winding drum, 35b Drum shaft, 35c Drum cover
35d: Spring spring, 35e: Split, 41 ...
Mirror body, 41a: opening, 42: mirror body, 4
3 Wiper shaft, 44 Wiper arm, 44a Cylinder, 44b Telescopic rod, 45 Tensioner inlet, 5
1, 51 ': heater, 52: DC power supply, 53: switch.

Claims (2)

(57) [Claims] [Claim 1] A wound orbital belt of a plurality of pulleys are arranged Rutotomoni, endless in the plurality of pulleys along the circumference of the fixed mirrors body in the mirror body, said mirror body The string is movably arranged near the surface of the mirror, and the string is moved to the surface of the mirror body.
It serves as a dispel, and surrounds taken by said mirror body and a mirror body
In the enclosed space, `` Street by elasticity of spring
A tensioner for applying tension to the mirror , and one of the strings arranged near the surface of the mirror body.
A wiper device having an end attached to the orbiting belt and the other end of the string attached to a tensioner, which is tensioned so that it can be extended and retracted, wherein a heater is provided between the mirror body and the mirror body. To heat the mirror body, the member disposed between the mirror body and the mirror body, and the string, and penetrates into the water adhering to the mirror surface and the mirror body. Characterized by the ability to prevent freezing of water that has taken place,
String-type wiper device that prevents icing. 2. A wiper shaft mounted reciprocally rotatable with respect to a mirror body fixed to the mirror body, a driving means for reciprocating the wiper shaft, and a reciprocating tilt fixed to the wiper shaft. ; and a wiper arm to be
Together, surrounded by said mirror body and a mirror body
In the space, "The elasticity of the spring creates a string
A tensioner for applying tension is provided , and one end of a string movably disposed near the surface of the mirror main body is attached to the tip of the wiper arm, and the other end of the string is attached to the tensioner, and is extended. A wiper device which is tensioned so as to be retractable, wherein a heater is provided between the mirror body and the mirror body, and the heater is provided between the mirror body and the mirror body and the mirror body. It is configured to heat the member and the string, and to prevent icing of water adhering to the mirror surface and water entering the mirror body.
String-type wiper device that prevents icing.