JP2006232200A - Locking device of elevating/sinking device for windscreen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking device for a windscreen elevating/sinking device equipped with stopper function without giving a rigidity particularly to a constituent member such as a guide rail, in which a drum driven by a reduction gear is locked directly to enable generating a stop (lock) without causing the member to enlarge and without being influenced by deceleration, capable of suppressing a large load input due to restraint to a cable (inner), pulley, etc. and suppressing a rise of the cost without causing the member to enlarge. <P>SOLUTION: A groove 50 with two ends blocked is formed at the undersurface of of the drum 30 driven by the reduction gear. A recess 51 is formed in a base bracket 11 positioned below the drum 30, and in this recess 51 a stopper lever 52 is installed rotatably whose projection 53 is fitted loosely in the groove 50. When the drum 30 rotates to cause the end of the groove 50 to abut to the projection 53 on the stopper lever 52, the drum 30 is locked. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a locking device in a lifting device for a wind screen that is provided so as to be movable up and down on a vehicle such as a motorcycle, a passenger car, a small ship, and a snowmobile.

  Patent Documents 1 and 2 listed below, for example, include windscreens (windshields) that can be moved up and down on vehicles such as motorcycles, passenger cars, small ships, and snowmobiles.

JP 2000-159172 A JP 2000-177668 A

  The windscreen lifting device described in Patent Documents 1 and 2 includes a guide rail attached to the vehicle body side, a carrier plate that can be moved up and down along the guide rail, and a windscreen attached thereto. A plurality of cables, each of which is locked through a pulley, and an end of the cable is locked, and the cable is wound up and sent out to raise the carrier plate, or It comprises a drum to be lowered and a driving device for driving the drum with a motor.

  In Patent Document 1, the upper and lower positions of the carrier plate are detected by a limit switch, and the motor is stopped by the detection output of the limit switch, whereby the carrier plate is stopped (positioned) at the upper or lower end. To do. In addition, a part of the guide rail is provided with a carrier plate stopper function.

  In Patent Document 2, stoppers are provided at the upper end position and the lower end position of the carrier plate, respectively, and when the carrier plate comes into contact with the stopper, the motor overcurrent is detected, or the motor is stopped. Limit switches are provided to stop the motor by detecting the upper and lower positions of the carrier plate.

  A windscreen that is mounted on a vehicle such as a motorcycle so as to be able to move up and down is subjected to a considerable wind pressure during traveling, and thus a large driving force is required to move the windscreen up and down. Therefore, in order to obtain a large driving force, a mechanism for decelerating the motor is incorporated, and the carrier plate is moved up and down via a cable.

In such a case, if the stop position is detected by the stopper on the guide rail side at the upper end position and the lower end position of the carrier plate, it is necessary to increase the rigidity of the stopper itself. Must be converted. Since such a windscreen lifting device is generally disposed in a narrow portion at the front of the vehicle, it is difficult to increase the size of the device and the cost is high.
Furthermore, the cable (inner cable) for raising and lowering the carrier plate, the pulley, and the end locking part that locks the end of the cable to the carrier plate or drum must also be structured to withstand heavy loads, as a whole There is a problem that it leads to an increase in size and an increase in cost.

The present invention has been provided in view of the above-described problems, and provides a lock device for a windscreen lifting device having at least the following objects.
(1) To provide a locking device having a stopper function without giving rigidity to constituent members such as guide rails.
(2) By directly locking the drum driven by the speed reducer, it is possible to stop (lock) with a small one without being affected by deceleration and without increasing the size of the member.
(3) For cables (inner cables) and pulleys, it is possible to suppress the input of a heavy load due to restraint, and to suppress an increase in cost without increasing the size of the member.
(4) When the upper and lower positions of the carrier plate are detected by the limit switch, even if the limit switch fails, the carrier plate is prevented from falling off the guide rail by locking on the drum side. thing.

Therefore, in the lock device for the wind screen lifting device according to claim 1 of the present invention, the guide rails 12 and 13 fixed to the vehicle body side, and the wind screen 1 can be moved up and down along the guide rails 12 and 13. The carrier plate 14 to be attached, the cable having one end locked to the carrier plate 14 and routed through the pulley, and the other end of the cable locked to the winding of the cable The wind screen lifting / lowering device includes a rotatable drum 30 that lifts and lowers the carrier plate 14 by feeding and feeding, and a cable driving device 23 that rotationally drives the drum 30 via a speed reducer 25. And
A groove 50 having both ends closed on one surface of the drum 30 is formed in the same direction as the circumferential direction of the drum 30, and a stopper lever 52 is provided in the groove 50 so that the tip portion is loosely fitted and the base portion is rotatable. The drum 30 is locked by the stopper lever 52 when the one end 50a or the other end 50b of the groove 50 is brought into contact with the stopper lever 52 by the rotation of the drum 30. It is characterized by.

  In the lock device for the wind screen lifting device according to claim 2, the end portions 50 a and 50 b of the groove 50 of the drum 30 abut against the stopper lever 52 before the carrier plate 14 is detached from the guide rails 12 and 13. It is characterized by touching.

  In the lock device for the wind screen lifting device according to claim 3, the groove 50 is provided on the lower surface of the drum 30, and the recess 50 is recessed in the base bracket 11 that pivotally supports the drum 30. A stopper lever 52 is pivotally supported, and a columnar protrusion 53 formed at the tip of the stopper lever 52 is loosely fitted in the groove 50.

In the lock device for the wind screen lifting device according to claim 4, both of the left tensioner body 61 are formed in a substantially L shape, and one ends thereof are rotatably connected to each other, and protrusions 66 and 76 are vertically provided at the other ends. And a right tensioner body 71 and a spring body 81 disposed between the left tensioner body 61 and the right tensioner body 71 and biasing in a direction to narrow the angle between the two tensioner bodies 61 and 71 on the horizontal plane. Forming a tensioner 60;
The cable tensioner 60 is disposed on the upper surface side of the drum 30, and the cables 44 and 46 are elastically biased by the protrusions 66 and 76 on both sides of the cable tensioner 60.

  According to the lock device in the wind screen lifting device of the first aspect of the present invention, the groove 50 having both ends closed on one surface of the drum 30 is formed in the same direction as the circumferential direction of the drum 30, and the groove 50, a stopper lever 52 whose tip is loosely fitted and whose base is rotatable is provided. One end 50a or the other end 50b of the groove 50 is brought into contact with the stopper lever 52 by the rotation of the drum 30. Since the drum 30 is locked by the stopper lever 52 when contacting, the drum 30 driven by the speed reducer 25 is directly locked by the stopper lever 52. In the prior art, where the stopper was provided, the speed reducer 25 was affected by the speed reducer. However, in the present invention, the speed reducer 25 is locked by the stopper lever 52, so Without being Hibiki, it is possible to stop the drum 30 forcibly. Therefore, it is not necessary to increase the rigidity of the guide rails 12 and 13 and the like, and the cables 44 to 46, the pulleys 34 to 37 and the like are restrained from restraining (locking the drum 30) to suppress the input of a large load. Is possible. Therefore, an increase in cost can be suppressed without increasing the size of the member.

  According to the lock device for the wind screen lifting device according to claim 2, for example, when the upper end position and the lower end position of the carrier plate 14 are detected by a limit switch or the like, the limit switch breaks down for some reason. Even when the carrier plate 14 cannot be detected, the end portions 50a and 50b of the groove 50 of the drum 30 are brought into contact with the stopper lever 52 before the carrier plate 14 is detached from the guide rail 12, so that the carrier plate 14 Can be prevented from falling off from the guide rail 12.

  According to the lock device for the wind screen lifting device according to claim 3, the groove 50 is provided on the lower surface of the drum 30, and the recess 50 is recessed in the base bracket 11 that pivotally supports the drum 30. Since the stopper lever 52 is pivotally supported by a shaft and a cylindrical protrusion 53 formed at the tip of the stopper lever 52 is loosely fitted in the groove 50, the area is increased in the lateral direction. Therefore, it is possible to provide a drum 30 locking mechanism that saves space.

  According to the lock device for the wind screen lifting device according to claim 4, the cable tensioner 60 is disposed on the upper surface side of the drum 30, and the cable 44 is formed by the protrusions 66 and 76 on both sides of the cable tensioner 60. 46, the tension of the cables 44, 46 can be constantly maintained optimally in a space-saving manner.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of an elevating device 10 that raises and lowers the wind screen 1, and is a view of the elevating device 10 as seen from above. Guide rails 12 and 13 having a substantially C-shaped cross section are arranged on both sides of the upper surface of the base bracket 11 which is the base of the lifting device 10. The base bracket 11 is attached to the vehicle body side of a vehicle such as a motorcycle, a passenger car, a small ship, or a snowmobile.

  A substantially flat carrier plate 14 is provided so as to bridge the guide rails 12 and 13 on both sides. As shown in FIGS. 1 and 2, a roller 15 is rotated by a shaft 16 in the guide rails 12 and 13. It is provided freely. When the carrier plate 14 is driven up and down as will be described later, the slider 15 rolls in the guide rails 12 and 13 so that the carrier plate 14 moves up and down smoothly along the longitudinal direction of the guide rails 12 and 13. It is free.

Limit switches 19 and 20 for detecting the upper end position and the lower end position of the carrier plate 14 (wind screen 1) are arranged on the left base bracket 11 of the left guide rail 12 in FIG. , 20 actuator 21 is pressed and driven, so that detection signals are sent from limit switches 19 and 20 to a control unit (not shown).
A drive piece 22 (see FIG. 2) is integrally suspended from the left lower surface of the carrier plate 14, and the actuator 21 of the limit switches 19, 20 is pressed and driven by the drive piece 22.

As shown in FIGS. 1 and 3, a cable driving device 23 is disposed on the lower surface side of the base bracket 11 of the lifting device 10. The cable driving device 23 includes a motor 24 that can rotate forward and backward, It is comprised with the reduction gear 25 which decelerates rotation of the motor 24. FIG. A gear 26 is attached to the output shaft of the speed reducer 25 so as to be exposed on the upper surface side of the base bracket 11, and the drum 30 is rotatably attached to the upper surface of the gear 26 and the base bracket 11 by a shaft 29. Is meshed with the tooth portion 31.
The rotational speed of the motor 24 is decelerated by the speed reducer 25, and the drum 30 is further decelerated by the gear 26 of the speed reducer 25 so as to rotate forward or reverse. Members such as the drum 30 disposed on the upper surface side of the base bracket 11 are covered with a base cover 17.

As shown in FIG. 3, the drum 30 is formed in a substantially disc shape, and a plurality of grooves 42 are spirally formed on the circumferential surface of a cylindrical portion 41 provided so as to protrude from the center portion of the bottom plate portion 40. It is recessed. That is, the groove 50 is formed in the same direction as the circumferential direction of the drum 30. Further, four pulleys 34 to 37 are rotatably arranged by a shaft 33 on the upper surface of the base bracket 11 and inside the guide rails 12 and 13.
An end locking portion 44 a on one end side of the cable 44 is locked via the groove 42 of the drum 30. Further, the direction of the cable 44 is changed via the pulley 34, and the end locking portion 44 b at the other end of the cable 44 is locked to the lower left side of the carrier plate 14.

Further, an end locking portion 45 a on one end side of the cable 45 is locked to the left lower surface side of the carrier plate 14 via the pulley 35, and the other end side of the cable 45 changes direction via the pulley 36. Thus, the end locking portion 45 b is locked to the lower surface side on the right side of the carrier plate 14.
The cable 46 having the end locking portion 46 a locked on the lower right side of the carrier plate 14 is turned by a pulley 37, and the end locking portion 46 b on the other end side of the cable 46 is a groove of the drum 30. After being wound by 42, it is locked.

  4 shows a plan view of the drum 30, and FIG. 5 shows a cross-sectional view taken along the line AA of FIG. FIG. 6A shows a side view of the drum 30 and FIG. 6B shows a rear view of the drum 30. As shown in FIGS. 4 to 6, a tooth portion 31 that meshes with the gear 26 of the cable driving device 23 is continuously formed on the outer peripheral surface of the bottom plate portion 40 of the drum 30, and the bottom plate portion of the drum 30 is also formed. A groove 50 is spirally recessed in the lower surface of 40. As shown in FIG. 5, the groove 50 has a shape with an open bottom surface. Reference numeral 47 denotes a hole through which the shaft 29 is inserted.

On the other hand, as shown in FIG. 7, a recess 51 is formed in the base bracket 11 corresponding to the lower side of the bottom plate portion 40 of the drum 30, and the groove 51 of the drum 30 projects into the recess 51. A stopper lever 52 in which the portion 53 is loosely fitted is provided. FIG. 8 shows the stopper lever 52. FIG. 8A shows a plan view of the stopper lever 52 and FIG. 8B shows a side view of the stopper lever 52. FIG.
7 and 8, the stopper lever 52 is formed in a substantially egg shape as a whole, and a cylindrical protrusion 53 is integrally projected on the top surface of the tip. Further, a substantially triangular reinforcing member 54 is integrally formed on the side of the protrusion 53. Further, a shaft support hole 55 is vertically perforated in the large diameter portion on the base side of the stopper lever 52.

As shown in FIG. 7, a hole 56 through which the lower portion of the shaft 57 is inserted is formed in the bottom surface of the recess 51 of the base bracket 11, and the shaft 57 is inserted into the hole 56 and the shaft support hole 55 of the stopper lever 52. The shaft 57 is fixed to the bottom of the recess 51 of the base bracket 11 by inserting and caulking the lower portion of the shaft 57 and the bottom surface of the recess 51.
Here, since the outer diameter of the shaft 57 is smaller than the inner diameter of the shaft support hole 55 of the stopper lever 52, after the shaft 57 is fixed to the bottom of the recess 51, the stopper lever 52 uses the shaft 57 as an axis. It can be turned.

  When the stopper lever 52 is rotatably arranged in the recess 51 of the base bracket 11 as described above, the protrusion 53 of the stopper lever 52 is loosely fitted in the groove 50 on the lower surface of the drum 30. It has become. As will be described later when the drum 30 rotates, the protrusion 53 of the stopper lever 52 is loosely fitted in the groove 50, so that the stopper lever 52 swings around the shaft 57.

  By the way, as shown in FIG. 1, when the drum 30 rotates, the cable 44 is wound and sent out, and the cable 46 is sent and wound around the drum 30 as described later. The configuration of the cable tensioner for preventing the slack of the cables 44 and 46 will be described. In FIG. 1, the cable tensioner is not shown for convenience of explanation.

  9-15, the cable tensioner 60 is shown in particular in FIGS. 12-15. The cable tensioner 60 is disposed on the upper surface of the cylindrical portion 41 of the drum 30. The cable tensioner 60 is composed of three members. The left tensioner body 61 shown in FIG. 9, the right tensioner body 71 shown in FIG. The spring body 81 shown in FIG. 11 is used to apply a biasing force to the tensioner body 71.

First, the left tensioner body 61 will be described. The base portion 68 of the left tensioner body 61 formed in a substantially L shape is formed in a substantially ring shape as shown in FIG. A hole 62 through which the shaft 29 that supports the shaft is inserted is formed. A circular fitting portion 63 is formed at the peripheral edge of the hole 62, and a slit 64 communicating with the hole 62 side and having an open lower surface is formed obliquely.
A side piece 65 is suspended from the end of the left tensioner body 61, and a substantially cylindrical elastic contact projection 66 having a small diameter is formed integrally with the lower portion of the side piece 65. Further, a ring-shaped groove 67 into which the spring body 81 is loosely fitted is provided on the lower surface side of the base portion of the left tensioner body 61.

As shown in FIG. 10, the right tensioner body 71 formed in a substantially L shape has a hole 72 through which the shaft 29 is inserted in a base 78 formed in a substantially ring shape on the left side. A circular fitted portion 73 that is loosely fitted to the fitting portion 63 of the left tensioner body 61 is formed at the peripheral portion. In addition, a slit 74 communicating with the hole 72 side and having an open upper surface is provided obliquely.
Further, a side piece 75 is suspended from the end of the right tensioner body 71, and a substantially cylindrical elastic contact projection 76 having a small diameter is integrally formed at the lower portion of the side piece 75. Further, a ring-shaped groove 77 into which the spring body 81 is loosely fitted is provided on the lower surface side of the base portion of the left tensioner body 61.

  As shown in FIGS. 11A and 11B, the spring body 81 is formed in a coil shape, and end portions 82 and 83 on both sides of the spring body 81 are extended outward. Then, as shown in FIG. 12, the spring body 81 is disposed in the ring-shaped groove 77 of the right tensioner body 71, one end 82 of the spring body 81 is inserted into the slit 74, and the other end 84 of the spring body 81 is further inserted. It is inserted into the slit 64 of the left tensioner body 61, and the fitting portion 63 of the left tensioner body 61 and the fitted portion 73 of the right tensioner body 71 are loosely fitted. Thereby, the tensioner bodies 61 and 71 of the cable tensioner 60 are connected to each other so as to be rotatable about the bases 68 and 78.

In the cable tensioner 60 assembled in this way, as shown in FIG. 13, a spring body 81 is disposed between the upper and lower tensioner bodies 61 and 71, and both end portions 82 and 83 of the spring body 81 are returned. Since this state is linear, the cable tensioner 60 has a substantially square shape. Both tensioner bodies 61 and 71 of the cable tensioner 60 are urged by a spring body 81 in a direction to narrow the angle on the horizontal plane.
Here, even if the cable tensioner 60 is biased in the direction of the arrow A shown in FIG. 13, the cable tensioner 60 always maintains the biasing force in the direction of the arrow B by the elastic return force of the spring body 81.

  FIG. 14 shows a state in which the drum 30 and the cable tensioner 60 are assembled to the base bracket 11. The drum 30 is rotatably arranged on a shaft 29 fixed to the base bracket 11, and the cable tensioner 60 is disposed on the upper surface of the drum 30. Place. The upper portion of the shaft 29 is inserted into the holes 62 and 72 of the cable tensioner 60, and the cable tensioner 60 itself is rotatably attached about the shaft 29 as an axis.

FIG. 15 shows a state in which the cable tensioner 60 is attached to the upper surface side of the drum 30 as described above, and the state of “a” in the drawing shows the state in which the cable tensioner 60 is assembled to the drum 30, and the spring body of the cable tensioner 60. The elastic contact projections 66 and 76 on both sides urge the cables 46 and 44 with a restoring force of 81. After the tension adjustment of the cables 46 and 44, the elastic contact protrusions 66 and 76 always elastically urge the cables 46 and 44 as shown by the cable tensioner 60 in FIG.
As a result, the slack of the cables 46 and 44 on both the ascending side and the descending side can be eliminated with the shaft of the drum 30 as a fulcrum, and the tension of the cables 46 and 44 can always be maintained optimally. In addition, since the cable tensioner 60 is disposed on the upper surface of the drum 30 and the elastic contact protrusions 66 and 76 hanging from the drum 30 on both sides of the cable tensioner 60 are elastically biased toward the cables 46 and 44, It can be realized in a space-saving manner as a structure for removing the slack of the cables 46 and 44.

Next, the raising / lowering operation | movement of the windscreen 1 is demonstrated. First, when the wind screen 1 is raised, as shown in FIG. 1, the motor 24 is driven to rotate forward, for example, and its rotational speed is decelerated by the speed reducer 25, and is further engaged with the gear 26 of the speed reducer 25. 30 rotates counterclockwise around the shaft 29 as a fulcrum.
When the drum 30 rotates counterclockwise, the cable 44 is wound around the drum 30 and at the same time, the cable 46 is sent out from the drum 30. As the cable 44 is wound up, the cables 44 to 46 circulate through the pulleys 34 to 37 as indicated by arrows in the drawing, whereby the carrier plate 14 rises along the guide rails 12 and 13. I will do it.

  Then, as shown in FIG. 16, the carrier plate 14 is raised by the rotation of the drum 30, and the drive piece 22 of the carrier plate 14 presses and drives the actuator 21 of the upper limit switch 19. Is turned on. A detection signal from the limit switch 19 is sent to a control unit (not shown) to stop the motor 24. This stop position is the upper end position of the wind screen 1.

  Here, when the drum 30 is rotated, the spiral groove 50 provided on the lower surface of the drum 30 is also rotating, and the protrusion 53 of the stopper lever 52 that is loosely fitted in the groove 50 is formed on the shaft 57 ( The head is swung around the fulcrum (see FIG. 7). The position of the protrusion 53 of the stopper lever 52 shown in FIG. 17 is a state where the limit switch 19 detects the carrier plate 14 and the carrier plate 14 is stopped at the upper end.

When the carrier plate 14 (wind screen 1) is lowered, the above control operation is performed in reverse, and the carrier plate 14 is lowered in FIG. Then, the carrier plate 14 stops at this position.
FIG. 18 shows the state of the protrusion 53 of the stopper lever 52 in the groove 50 at the position where the carrier plate 14 descends and stops.

  Thus, when the limit switches 19 and 20 are operating normally without failure when the carrier plate 14 is moved up and down, the end portions 50a and 50b of the groove 50 are loosely fitted in the groove 50. The stopper lever 52 stops at a position before it does not hit the protruding portion 53 of the stopper lever 52.

Next, an operation when the limit switches 19 and 20 cannot detect the carrier plate 14 due to some failure will be described. As shown in FIG. 19, since the carrier plate 14 moves upward and the actuator 21 of the limit switch 19 is pressed and driven by the driving piece 22 of the carrier plate 14, the detection signal from the limit switch 19 is not output. The motor 24 continues to be driven to rotate.
Therefore, the carrier plate 14 further rises, but when the actuator 21 of the limit switch 19 is pressed and slightly lifted, the end portion 50a of the groove 50 of the drum 30 is projected to the protrusion of the stopper lever 52 as shown in FIG. 53, the drum 30 is forcibly prevented from rotating and the drum 30 is locked.

  Next, when the carrier plate 14 is lowered and the limit switch 20 for detecting the lower end position is broken, similarly, when the drum 30 further rotates in the direction opposite to the above, As shown in FIG. 21, the end 50b of the groove 50 of the drum 30 hits the protrusion 53 of the stopper lever 52, locks the drum 30, and forcibly stops the rotation of the drum 30.

  Thus, in this embodiment, when the upper limit position and the lower end position of the carrier plate 14 are detected by the limit switches 19 and 20 or the like, the limit switch 19 or 20 fails for some reason and the carrier plate 14 cannot be detected. Even in this case, since the end portions 50a and 50b of the groove 50 of the drum 30 abut against the stopper lever 52 before the carrier plate 14 is detached from the guide rails 12 and 13, the drum 30 is locked. Can be prevented from falling off the guide rails 12 and 13.

When the drum 30 is locked by the stopper lever 52, the lock of the drum 30 is released by reversing the motor 24, that is, the drum 30.
Even when the limit switch 19 or the limit switch 20, or both of the limit switches 19, 20 fail and the carrier plate 14 cannot be detected, the carrier plate 14 (wind screen 1) can be continuously moved up and down. It can be done.

  As described above, in the present embodiment, the drum 30 driven by the speed reducer 25 is directly locked by the stopper lever 52, so that the conventional structure in which the stopper is provided on the guide rail side is affected by the speed reduction by the speed reducer. However, in the present invention, the drum 30 can be forcibly stopped without being affected by the deceleration. Therefore, it is not necessary to increase the rigidity of the guide rails 12 and 13 and the like, and the cables 44 to 46, the pulleys 34 to 37 and the like are restrained from restraining (locking the drum 30) to suppress the input of a large load. Is possible.

  Further, the groove 50 is formed on the lower surface of the drum 30, the stopper lever 52 is pivotally supported in the recess 51 of the base bracket 11, and the columnar protrusion 53 formed at the tip of the stopper lever 52 is formed in the groove 50. Since it is loosely fitted inside, it is possible to provide a locking mechanism for the drum 30 that saves space without increasing the area in the lateral direction.

By the way, although the groove | channel 50 formed in the lower surface of the drum 30 and obstruct | occluded both ends was made into the spiral shape in the previous example, it is not limited to this spiral shape. For example, as shown in FIG. 22, the groove 50 whose both ends are closed according to the diameter of the drum 30 when the carrier plate 14 is lifted or lowered is not a spiral shape but a substantially C-ring shape. You may make it form in.
In addition, when the carrier plate 14 is moved up and down by a large amount, the shape of the multiple spiral grooves 50 may be used.

  In the above embodiment, the case where the guide rails are two parallel guide rails 12 and 13 has been described, but by rotating the drum 30 through the speed reducer 25 with the guide rail as one, Even when the carrier plate 14 (wind screen 1) is moved up and down, the present invention is applied.

It is a general | schematic schematic block diagram of the raising / lowering apparatus of the wind screen in embodiment of this invention. It is a principal part enlarged view of the guide rail in embodiment of this invention. It is sectional drawing of the raising / lowering apparatus in embodiment of this invention. It is a top view of the drum in embodiment of this invention. It is AA sectional drawing of FIG. 4 in embodiment of this invention. (A) and (b) are the side view and rear view of a drum in an embodiment of the present invention. It is explanatory drawing which shows the arrangement | positioning relationship between the groove | channel of a drum and the stopper lever in embodiment of this invention. (A) and (b) are the top views and side views of the stopper lever in embodiment of this invention. (A)-(c) is the top view, side view, and sectional drawing of the left tensioner body which comprise the cable tensioner in embodiment of this invention. (A)-(c) is the top view, side view, and sectional drawing of the right tensioner body which comprise the cable tensioner in embodiment of this invention. (A) and (b) are the top views and front views of the spring body which comprise the cable tensioner in embodiment of this invention. It is a figure which shows the assembly state of the cable tensioner in embodiment of this invention. It is a top view of the cable tensioner in the embodiment of the present invention. It is a figure which shows the state attached to the drum side of the cable tensioner in embodiment of this invention. (A) is a figure which shows tension adjustment of a cable with the cable tensioner in embodiment of this invention, (b) is a front view of a cable tensioner. It is explanatory drawing which shows operation | movement of the raising / lowering apparatus in embodiment of this invention. It is explanatory drawing which shows the positional relationship of the groove | channel of the drum and stopper lever in embodiment of this invention. It is explanatory drawing which shows the positional relationship of the groove | channel of the drum and stopper lever in embodiment of this invention. It is explanatory drawing which shows operation | movement of the raising / lowering apparatus when the limit switch in embodiment of this invention fails. It is a figure which shows the locked state of the drum in embodiment of this invention. It is a figure which shows the locked state of the drum in embodiment of invention. It is a figure which shows the other example of the groove | channel formed in the drum in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wind screen 10 Lifting device 11 Base bracket 12, 13 Guide rail 14 Carrier plate 19, 20 Limit switch 23 Cable drive device 24 Motor 25 Reduction gear 30 Drum 34-37 Pulley 44-46 Cable (inner cable)
50 groove 50a groove one end 50b groove other end 51 recess 52 stopper lever 53 protrusion 60 cable tensioner 61 left tensioner body 66 elastic contact projection 71 right tensioner body 76 elastic contact projection 81 spring body

Claims (4)

Guide rails (12) and (13) fixed to the vehicle body side, a carrier plate (14) to which the wind screen (1) is attached to be movable up and down along the guide rails (12) and (13), and the carrier A cable having one end locked to the plate (14) and routed through a pulley, and the other end of the cable locked to wind and send out the cable. Lifting and lowering of a wind screen provided with a rotatable drum (30) for raising and lowering the carrier plate (14) and a cable driving device (23) for driving the drum (30) through a reduction gear (25). A device,
A groove (50) having both ends closed on one surface of the drum (30) is formed in the same direction as the circumferential direction of the drum (30). A stopper lever (52) is provided,
When the drum (30) rotates, one end (50a) or the other end (50b) of the groove (50) comes into contact with the stopper lever (52). A locking device in a lifting device for a wind screen, which is locked by a lever (52).   Ends (50a) and (50b) of the groove (50) of the drum (30) abut against the stopper lever (52) before the carrier plate (14) is detached from the guide rails (12) and (13). The locking device in the lifting device for the wind screen according to claim 1, wherein the locking device is used.   The groove (50) is provided on the lower surface of the drum (30), and the stopper lever (52) is placed in a recess (51) provided in a base bracket (11) that pivotally supports the drum (30). The cylindrical protrusion (53) that is pivotally supported and formed at the tip of the stopper lever (52) is loosely fitted in the groove (50). The locking device in the raising / lowering device of the windscreen of Claim 2. A left tensioner body (61) and a right tensioner body (71), both of which are formed in a substantially L shape, are rotatably connected at one end, and have protrusions (66) and (76) suspended from the other end, respectively. A cable is provided between the tensioner body (61) and the right tensioner body (71), and is biased in a direction to narrow the angle on the horizontal plane between the two tensioner bodies (61) (71). Forming a tensioner (60),
The cable tensioner (60) is disposed on the upper surface side of the drum (30), and the cables (44) (46) are elastically applied by the protrusions (66) (76) on both sides of the cable tensioner (60). 4. The locking device for a windscreen lifting device according to claim 1, wherein the locking device is configured to be biased.

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