JP6488220B2 - Connection device and wiper device - Google Patents

Description

  The present invention relates to a connection device and a wiper device that connect pipe members that supply washer liquid to a wiper arm.

  Conventionally, Patent Document 1 discloses a connection device that connects pipe members. The connection device described in Patent Literature 1 is disposed between a heat source device and a terminal device. The connection device is connected to a first pipe member and a second pipe member connected to the terminal, a first connector (plug joint portion) that supports the first pipe member and the second pipe member, and a heat source device. It has the 3rd pipe member and the 4th pipe member, and the 2nd connector (outlet joint part) which supports the 3rd pipe member and the 4th pipe member. The first connector has a plug terminal, and the second connector has a mounting opening. When the plug terminal is attached to the attachment port, the first tube member and the third tube member are connected, and the second tube member and the fourth tube member are connected.

  In addition, a place where the third pipe member and the fourth pipe member are connected to the first connector is provided with a stopper to prevent the third tube member and the fourth pipe member from being detached from the first connector. ing. And the warm water of a heat source machine flows into a 4th pipe member via a terminal device while flowing into a 3rd pipe member from a 1st pipe member, and then returns to a heat source machine through a 2nd pipe member.

Japanese Unexamined Patent Publication No. 60-18690

  However, in the connection device described in Patent Document 1, the first connector and the second connector are connected in the opposite direction, and the first tube member and the fourth tube member are connected, and the second tube member And the third pipe member may be connected. Further, in order to connect the third tube member and the fourth tube member to the first connector against the retaining provided in the first connector, the first tube member is twisted while the third tube member and the fourth tube member are twisted. When attached to the connection tool, the third pipe member and the fourth pipe member may be attached to the first connection tool in a twisted state.

  An object of the present invention is to provide a connection device that can prevent reverse assembly of the first connector and the second connector, and that can prevent the pipe member from being connected to the first connector in a twisted state. It is to provide a wiper device.

  The present invention is a connection device that is provided in a path for sending washer liquid to a wiper arm and has a first connection tool and a second connection tool that are connected to each other, supported by the first connection tool, and A first pipe member and a second pipe member arranged in parallel, a first arrangement hole provided in the first connector, and arranged in the first pipe member, and provided in the first connector. And a second arrangement hole in which the second pipe member is arranged, a third pipe member provided in the second connection tool and inserted into the first pipe member, and provided in the second connection tool. And in a plan view intersecting with a direction in which the fourth pipe member inserted into the second pipe member and the third pipe member and the fourth pipe member are inserted, the first connector and the first A reference position between the first pipe member and the second pipe member; A positioning mechanism for positioning in a circumferential direction around the center, a first retaining member provided in the first arrangement hole and sandwiching the first pipe member in cooperation with the third pipe member, and the second A second retaining member provided in the arrangement hole and sandwiching the second pipe member in cooperation with the fourth pipe member.

  The positioning mechanism of the present invention includes the first connector and the first connector such that the third tube member is inserted into the first tube member and the fourth tube member is inserted into the second tube member. 2. Position the connector.

  The positioning mechanism of the present invention includes a first engagement portion provided in the first connection tool, a second engagement portion provided in the first connection tool and larger than the first engagement portion, A first recess provided in the second connector and into which the first engagement portion enters; a second recess provided in the second connector; and entering the second engagement portion; and A second recess that is larger than the first recess.

  The present invention relates to a wiper device comprising: a tank in which washer liquid is stored; a nozzle that injects washer liquid sent from the tank onto a windshield; and a wiper arm that wipes the windshield and has the nozzle attached thereto. The nozzle includes a first nozzle and a second nozzle, and the first nozzle injects washer liquid when the wiper arm moves away from a cowl panel of a vehicle body, and the second nozzle The wiper arm sprays washer liquid when it moves in a direction approaching the cowl panel, and the connecting device is provided in a path for sending the tank washer liquid to the first nozzle and the second nozzle, The first tube member is connected to the first nozzle, and the second tube member is connected to the second nozzle.

  The second connector of the present invention is attached to the vehicle body.

  According to the present invention, it is possible to prevent the first connector and the second connector from being attached in opposite directions. Moreover, it can suppress that a pipe member is attached in the state twisted with respect to the 1st connection tool.

It is a top view of the wiper arm of the wiper device provided in vehicles. It is a block diagram which shows the control system of a wiper apparatus. It is sectional drawing which looked at the assembled connection apparatus from the front. It is sectional drawing which looked at the connection apparatus before an assembly from the front. It is a perspective view of the connection apparatus before an assembly. (A) is a bottom view of the 1st connection tool used for a connection device, (B) is a top view of the 2nd connection tool used for a connection device. It is a side view of the connection apparatus of FIG. It is a side view of the connection apparatus of FIG. It is a bottom view of the 2nd connection tool used for a connection device. It is a perspective view which shows the other example of the connection apparatus before an assembly. (A) is a bottom view of the 1st connection tool used for the connection apparatus of FIG. 10, (B) is a top view of the 2nd connection tool used for the connection apparatus of FIG. It is a front view of the connection apparatus before an assembly.

  Hereinafter, embodiments of a wiper device and a connection device used in a vehicle will be described with reference to the drawings.

  A wiper device 10 shown in FIG. 1 wipes a windshield 11 of a vehicle. The wiper device 10 includes a wiper arm 13 that operates within a range of a predetermined angle with a pivot shaft 12 as a fulcrum, and a blade 14 attached to the wiper arm 13. The blade 14 is formed of a rubber-like elastic body and contacts the windshield 11. The wiper arm 13 is formed of metal or resin. As shown in FIG. 2, the wiper device 10 has a wiper motor 15, and the pivot shaft 12 is rotated by the power of the wiper motor 15. The wiper motor 15 is provided below a cowl panel that forms a part of the vehicle body or in the engine room.

  Further, the wiper device 10 includes a controller 16 that drives the wiper motor 15, and a signal from the wiper switch 17 is input to the controller 16. A position sensor 18 for detecting the operating position of the wiper arm 13 is provided, and a signal from the position sensor 18 is input to the controller 16. The controller 16 detects the operation position of the wiper arm 13, specifically, the position of the wiper arm 13 between the first inversion position and the second inversion position. Further, the controller 16 is in a first operation state in which the wiper arm 13 operates from the first reverse position to the second reverse position, or the wiper arm 13 operates from the second reverse position to the first reverse position. It is detected whether it is in the second operation state.

  The first operating state of the wiper arm 13 is that the wiper arm 13 moves counterclockwise in FIG. 1 with the pivot shaft 12 as a fulcrum. The second operation state of the wiper arm 13 is that the wiper arm 13 operates clockwise with the pivot shaft 12 as a fulcrum in FIG. The first reversal position is the position closest to the cowl panel, and the second reversal position is the position closest to the front pillar. The movement of the wiper arm 13 in the direction away from the cowl panel can be called an outward path, and the movement of the wiper arm 13 in the direction of approaching the cowl panel can also be called a return path.

  As shown in FIG. 1, the first nozzle 19 and the second nozzle 20 are attached to the wiper arm 13. The timing at which the first nozzle 19 and the second nozzle 20 eject the washer liquid is different according to the operation direction of the wiper arm 13. A first tube member 21 is connected to the first nozzle 19, and a second tube member 22 is connected to the second nozzle 20. Both the first tube member 21 and the second tube member 22 are formed of flexible soft synthetic resin or synthetic rubber, and the first tube member 21 and the second tube member 22 are attached along the wiper arm 13. ing. The first pipe member 21 has a flow path 21A, and the second pipe member 22 has a flow path 22A.

  As shown in FIG. 2, a tank 23 is provided in the engine room of the vehicle, and washer fluid is stored in the tank 23. A pump 24 is provided in the engine room, and the pump 24 sucks and discharges the washer liquid in the tank 23. A discharge pipe 25 is connected to the discharge port of the pump 24, and the discharge pipe 25 is connected to a switching valve 26. A first upstream pipe 27 and a second upstream pipe 28 are connected to the switching valve 26 in parallel with each other. Both the first upstream pipe 27 and the second upstream pipe 28 are formed of flexible soft synthetic resin or synthetic rubber. The switching valve 26 is a solenoid valve, the controller 16 controls the switching valve 26, the state of the switching valve 26 is connected to the discharge pipe 25 and the first upstream pipe 27, and the discharge pipe 25 and the second upstream pipe 28 are connected. Are switched to a first switching state in which the discharge pipe 25 is connected to the second upstream pipe 28, and a second switching state in which the discharge pipe 25 and the first upstream pipe 27 are blocked.

  The controller 16 performs switching between the first switching state and the second switching state according to the operation state of the wiper arm 13. For example, when the wiper arm 13 is in the first operation state, the switching valve 26 is controlled to the first switching state, and when the wiper arm 13 is in the second operation state, the switching valve 26 is controlled to the second switching state.

  Next, the connecting device 29 provided in the path for sending the washer liquid in the tank 23 to the first nozzle 19 and the second nozzle 20 of the wiper arm 13 will be described with reference to FIGS. The connection device 29 connects the first upstream pipe 27 to the first pipe member 21 and connects the second upstream pipe 28 to the second pipe member 22. The connection device 29 includes a first connection tool 30 and a second connection tool 31, and both the first connection tool 30 and the second connection tool 31 are formed of a hard synthetic resin. The connection device 29 is assembled by pressing the first connection tool 30 and the second connection tool 31 along the predetermined direction A1.

  As shown in FIGS. 3, 4, 5, 7, and 8, the first connector 30 includes a base 32, and a first protrusion 33 and a second protrusion 34 that protrude from the base 32. . The direction in which the second protrusion 34 protrudes from the base 32 is opposite to the direction in which the first protrusion 33 protrudes from the base 32. The bottom surface shape of the base 32, the first protrusion 33, and the second protrusion 34 is a track shape. A first arrangement hole 35 and a second arrangement hole 36 are provided across the first protrusion 33, the base 32, and the second protrusion 34. The first arrangement hole 35 and the second arrangement hole 36 are arranged at an interval in the major axis direction of the base portion 32.

  The first arrangement hole 35 has a large diameter portion 37 and a small diameter portion 38, and the inner diameter of the large diameter portion 37 is larger than the inner diameter of the small diameter portion 38. Further, an annular first step portion 39 that connects the inner surface of the large diameter portion 37 and the inner surface of the small diameter portion 38 is formed. The second arrangement hole 36 has a large diameter portion 40 and a small diameter portion 41, and the inner diameter of the large diameter portion 40 is larger than the inner diameter of the small diameter portion 41. Further, an annular second step portion 42 that connects the inner surface of the large diameter portion 40 and the inner surface of the small diameter portion 41 is formed. The first pipe member 21 is arranged in the first arrangement hole 35 and supported by the first connection tool 30, and the second pipe member 22 is arranged in the second arrangement hole 36 and supported by the first connection tool 30.

  A first engaging portion 43 and a second engaging portion 44 that protrude from the base portion 32 are provided. The direction in which the first engaging portion 43 and the second engaging portion 44 protrude from the base portion 32 is the same as the direction in which the second protruding portion 34 protrudes from the base portion 32. The first engagement portion 43 is disposed at one end of the base portion 32 in the long axis direction, and the second engagement portion 44 is disposed at the other end of the base portion 32 in the long axis direction. Therefore, the first arrangement hole 35 and the second arrangement hole 36 are arranged between the first engagement portion 43 and the second engagement portion 44 in the major axis direction of the base portion 32.

  As shown in FIG. 6A, the first engagement portion 43 has a width L1 in the minor axis direction of the base portion 32, and the second engagement portion 44 has a width L2 in the minor axis direction of the base portion 32. The width L1 and the width L2 are different. Here, it is assumed that the width L2 is larger than the width L1. Further, the amount that the first engaging portion 43 protrudes from the base portion 32 is the same as the amount that the second engaging portion 44 protrudes from the base portion 32.

  As shown in FIGS. 3, 4, 5, 7, and 8, the second connector 31 includes a base 45, a recess 46 provided in the base 45, and a mount 47 that protrudes from the base 45. . The recess 46 is an opening formed at a location facing the first connector 30 in the base 45. When the base 45 is viewed in plan as shown in FIG. 6, the recess 46 has a track shape. The recess 46 has a size and a depth at which the second protrusion 34 is disposed. The depth of the recess 46 is an amount in a direction along the predetermined direction A1.

  Connection pipes 48 and 49 protruding from the bottom surface of the recess 46 are provided. The connecting pipes 48 and 49 are arranged at intervals in the major axis direction of the base portion 45. The connecting pipes 48 and 49 protrude from the bottom surface of the recess 46 along the predetermined direction A1. The outer peripheral surface of the connection pipe 48 is tapered so that the outer diameter decreases as it approaches the tip. The outer peripheral surface of the connecting pipe 49 is tapered so that the outer diameter decreases as it approaches the tip.

  The maximum outer diameter of the connection pipe 48 is smaller than the inner diameter of the small diameter part 38, and the radial thickness of the first pipe member 21 is larger than the difference between the maximum outer diameter of the connection pipe 48 and the inner diameter of the small diameter part 38. large. The maximum outer diameter of the connecting pipe 49 is smaller than the inner diameter of the small diameter part 41, and the radial thickness of the second pipe member 22 is larger than the difference between the maximum outer diameter of the connecting pipe 49 and the inner diameter of the small diameter part 41. large. The radial thickness of the first tube member 21 and the second tube member 22 is such that the first tube member 21 and the second tube member 22 are not subjected to a radial load, that is, elastically deformed. It is a value in the state without.

  As shown in FIG. 3, in a state where the first connection tool 30 and the second connection tool 31 are assembled, the connection pipe 48 is disposed in the flow path 21 </ b> A of the first pipe member 21, and the connection pipe 49 is the second pipe member. It arrange | positions to 22 A of flow paths.

  Concave portions 50 and 51 are formed by cutting out both ends of the base portion 45 in the major axis direction. The recess 50 has a width L3 in the minor axis direction, and the recess 51 has a width L4 in the minor axis direction. The width L3 and the width L4 are different. Here, it is assumed that the width L4 is larger than the width L3. The width L3 is larger than the width L1 and smaller than the width L4. Furthermore, the width L4 is larger than the width L2. For this reason, when the first connector 30 and the second connector 31 are brought closer to each other along the predetermined direction A1, the second engagement portion 44 can enter the recess 51, and the first engagement portion 43 can enter the recess 50. Can enter. Note that the second engagement portion 44 cannot enter the recess 50. Further, a third engagement portion 52 is provided in the recess 50, and a fourth engagement portion 53 is provided in the recess 51.

  Engaging portions 54 and 55 are provided on the mount 47. The engaging portions 54 and 55 are disposed at both ends of the mount 47 in the long axis direction. The engaging portions 54 and 55 are extended toward the base portion 45. In the major axis direction of the base 45, the distance between the tip of the engaging portion 54 and the tip of the engaging portion 55 is larger than the opening length of the attachment hole 57.

  The vehicle body 56 is made of steel, and an attachment hole 57 that penetrates the vehicle body 56 is provided. The vehicle body 56 includes a panel, a bracket, a frame, and the like. Then, the mount 47 is disposed in the attachment hole 57, and the second connector 31 is attached to the vehicle body 56. Since the engaging portions 54 and 55 are in contact with the vehicle body 56, the second connector 31 is not detached from the vehicle body 56. When the second connector 31 is viewed from the bottom as shown in FIG. 9, the attachment hole 57 is rectangular, and a notch 58 is formed at a location corresponding to one side in the minor axis direction.

  The mount 47 is rectangular in the bottom view of the second connector 31, and the mount 47 is smaller than the mounting hole 57. A protrusion 59 is provided on one side of the mount 47 on the short axis side. When the protrusion 59 is inserted into the notch 58, the mount 47 can be disposed in the mounting hole. Therefore, when the projecting portion 59 and the notch 48 are in the opposite positions in the minor axis direction of the mount 47, it is impossible to insert the mount 47 into the mounting hole 57.

  Connection pipes 60 and 61 projecting from the mount 47 along a predetermined direction A1 are provided. The first upstream pipe 27 is fitted on the outer circumference of the connection pipe 60, and the second upstream pipe 28 is fitted on the outer circumference of the connection pipe 61. A flow path 62 is formed across the connection pipe 48, the mount 47, and the connection pipe 60, and the flow path 62 is connected to the first upstream pipe 27. A flow path 63 is formed across the connection pipe 49, the mount 47 and the connection pipe 61, and the flow path 63 is connected to the second upstream pipe 28. Further, when the connection pipe 48 is connected to the first pipe member 21, the flow path 62 and the flow path 21A are connected. Furthermore, when the connection pipe 49 is connected to the second pipe member 22, the flow path 63 and the flow path 22A are connected.

  Next, an operation for assembling the connection device 29 will be described. In the state where the first pipe member 21 is arranged in the first arrangement hole 35 of the first connection tool 30 and the second pipe member 22 is arranged in the second arrangement hole 36 of the first connection tool 30, the first connection tool 30. And the second connector 31 are brought closer to each other in the direction along the predetermined direction A1. Then, the connection pipe 48 enters the flow path 21 </ b> A of the first pipe member 21, and the connection pipe 49 enters the flow path 22 </ b> A of the second pipe member 22. Further, the second protrusion 34 enters the recess 46.

  Further, the first engaging portion 43 enters the notch 50, and the second engaging portion 44 enters the notch 51. And if the base 32 of the 1st connection tool 30 and the base 45 of the 2nd connection tool 31 contact, the 1st connection tool 30 and the 2nd connection tool 31 will stop, and the 1st engaging part 43 will be 3rd engagement. The second engaging portion 44 is engaged with the fourth engaging portion 53. As described above, when the first engagement portion 43 engages with the third engagement portion 52 and the second engagement portion 44 engages with the fourth engagement portion 53, the engagement force is applied to the first connection tool 30. The second connector 31 is coupled, and the assembly of the connection device 29 is completed. That is, the flow path 62 is connected to the flow path 21A, and the flow path 63 is connected to the flow path 22A.

  In the process in which the connecting pipe 48 enters the flow path 21A, the first pipe member 21 is elastically deformed outward in the radial direction. In the state where the assembly of the connection device 29 is completed as shown in FIG. 3, the first pipe member 21 is sandwiched between the outer peripheral surface of the connection pipe 48 and the inner surface of the large diameter portion 37. Further, the second pipe member 22 is sandwiched between the outer peripheral surface of the connection pipe 49 and the inner surface of the large diameter portion 40 in a state where the assembly of the connection device 29 is completed.

  The operation of assembling the connection device 29 by connecting the first connector 30 and the second connector 31 is performed after the second connector 31 is attached to the vehicle body 56, or the second connector 31 is mounted on the vehicle body 56. Any of the above may be performed before being attached to. The operation of connecting the first upstream pipe 27 to the connection pipe 60 and the operation of connecting the second upstream pipe 28 to the connection pipe 61 are performed after the second connector 31 is attached to the vehicle body 56.

  When the wiper switch 17 is turned on, the controller 16 rotates the wiper motor 15 to reciprocate the wiper arm 13. Further, the controller 16 controls the switching valve 26 between the first switching state and the second switching state according to the operating position of the wiper arm 13. As a result, when the wiper arm 13 is in the first operation state, the washer liquid is jetted from the first nozzle 19 toward the windshield 11. Further, when the wiper arm 13 is in the second operation state, the washer liquid is ejected from the second nozzle 20 toward the windshield 11. That is, the washer liquid can be sprayed toward the portion of the windshield 11 before being wiped by the wiper arm 13.

  When the worker assembles the connection device 29, the worker has that the width L <b> 2 of the second engagement portion 44 provided in the first connection tool 30 is larger than the width L <b> 3 of the recess 50 provided in the second connection tool 31. Can be visually confirmed. For this reason, when assembling the connection device 29, the operator can align the second engagement portion 44 and the recess 51 in the major axis direction of the base portion 32. More specifically, in the plan view of the first connection tool 30, the second engagement portion in the circumferential direction centering on the reference position B <b> 1 between the first engagement portion 43 and the second engagement portion 44. 44 and the recessed part 51 are made into the same position, and the 1st engaging part 43 and the recessed part 50 are made into the same position. Next, the connection device 29 can be assembled by bringing the first connection tool 30 and the second connection tool 31 close to each other. That is, the connecting pipe 48 is connected to the first pipe member 21, and the connecting pipe 49 is connected to the second pipe member 22.

  On the other hand, the width L <b> 2 of the second engagement portion 44 is larger than the width L <b> 3 of the recess 50. For this reason, even if the first connector 30 and the second connector 31 are brought close to each other in the state where the second engaging portion 44 and the recess 50 are in the same position in the major axis direction of the base portion 32, The second engaging portion 44 does not engage with the fourth engaging portion 53, and the first engaging portion 43 does not engage with the third engaging portion 52. That is, the connection pipe 48 is not connected to the second pipe member 22, and the connection pipe 49 is not connected to the first pipe member 21. In addition, since the second engagement portion 44 does not engage with the fourth engagement portion 53 and the first engagement portion 43 does not engage with the third engagement portion 52, the worker can Notice that the two connectors 31 are in the opposite position in the long axis direction.

  For this reason, it is possible to prevent the connection pipe 48 from being connected to the second pipe member 22 and the connection pipe 49 from being connected to the first pipe member 21. Therefore, the washer liquid is ejected from the second nozzle 20 when the wiper arm 13 is in the first operation state, and the washer liquid is ejected from the first nozzle 19 when the wiper arm 13 is in the second operation state. it can.

  In the state where the assembly of the connection device 29 is completed as shown in FIG. 3, the first pipe member 21 is sandwiched between the outer peripheral surface of the connection pipe 48 and the inner surface of the large diameter portion 37. For this reason, when the force of the direction which removes the 1st pipe member 21 from the connection pipe 48 generate | occur | produces, the 1st step part 39 and the connection pipe 48 will cooperate, and the 1st pipe member 21 will be pinched | interposed. 21 can be prevented from coming off the connection pipe 48. Further, the second pipe member 22 is sandwiched between the outer peripheral surface of the connection pipe 49 and the inner surface of the large diameter portion 40 in a state where the assembly of the connection device 29 is completed. For this reason, when the force of the direction which removes the 2nd pipe member 22 from the connection pipe 49 generate | occur | produces, the connection pipe 49 and the 2nd step part 42 cooperate, and the 2nd pipe member 22 is pinched | interposed, and the 2nd pipe member 22 can be prevented from being detached from the connecting pipe 49.

  That is, in order to prevent the first pipe member 21 from being detached from the connection pipe 48, it is not necessary to provide a retaining member such as a rib on the outer peripheral surface of the connection pipe 48. Therefore, when attaching the 1st pipe member 21 to the outer peripheral surface of the connection pipe 48, it can prevent that the 1st pipe member 21 will be in the state twisted. Further, in order to prevent the second pipe member 22 from coming off the connection pipe 49, it is not necessary to provide a retaining member such as a rib on the outer peripheral surface of the connection pipe 49. Therefore, when attaching the 2nd pipe member 22 to the outer peripheral surface of the connection pipe 49, it can prevent that the 2nd pipe member 22 will be in the state twisted.

  As described above, the connection device 29 can prevent the first pipe member 21 and the second pipe member 22 from being attached to the vehicle body 56 in a state where the first pipe member 21 and the second pipe member 22 are twisted. , Fit within a predetermined space. Therefore, it can prevent that the 1st pipe member 21 and the 2nd pipe member 22 contact a peripheral component and the vehicle body 56, and the outer surface of the 1st pipe member 21 and the outer surface of the 2nd pipe member 22 are damaged. .

  Another example of the connection device 29 will be described with reference to FIGS. 10 and 11. The second engagement portion 44 of the first connector 30 has a width L1, and the recess 51 of the second connector 31 has a width L3. An engaging portion 64 protruding from the end surface of the base portion 45 of the second connector 31 is provided. The engaging portion 64 is provided on one of the two straight portions of the base portion 45. A recess 65 is provided in the base 32 of the first connector 30. The recess 65 is provided in one of the two straight portions of the base 32. The engaging portion 64 has a size and shape that enters the recess 65.

  In the direction intersecting with the predetermined direction A1, that is, in the circumferential direction centering on the reference position B1 in FIG. The first connector 30 and the second connector 31 are positioned so that the recess 65 is at the same position. When the first connector 30 and the second connector 31 are brought closer along the predetermined direction A1, the first engagement portion 43 enters the recess 50 and the second engagement portion 44 enters the recess 51. To do. Further, the connection pipe 48 enters the flow path 21A, and the connection pipe 49 enters the flow path 22A.

  Further, the engaging portion 64 enters the concave portion 65, and the base portion 32 and the base portion 45 come into contact with each other. In a state where the base portion 32 and the base portion 45 are in contact with each other, the first engagement portion 43 engages with the third engagement portion 52, and the second engagement portion 44 engages with the fourth engagement portion 53. The first tube member 21 is sandwiched between the inner surface of the large diameter portion 37 and the outer peripheral surface of the connection tube 48, and the second tube member 22 is interposed between the inner surface of the large diameter portion 40 and the outer peripheral surface of the connection tube 49. Sandwiched between. In this way, the flow path 21A and the flow path 62 are connected, and the flow path 22A and the flow path 63 are connected.

  The first connecting tool 30 and the second connecting tool 31 shown in FIGS. 10 and 11 are such that the first connecting tool 30 and the second connecting tool 31 can be seen by the operator visually observing the engaging portion 64 and the recess 65. It can be confirmed that the base 32 is in the opposite direction in the short axis direction. Even if the first connector 30 and the second connector 31 are close to each other in the state where the first connector 30 and the second connector 31 are opposite to each other in the minor axis direction of the base portion 32, the engaging portion Since 64 contacts the end face of the base 45, the first engagement portion 43 does not engage with the third engagement portion 52, and the second engagement portion 44 cannot engage with the fourth engagement portion 53. For this reason, it is possible to prevent the connection pipe 48 and the first pipe member 21 from being connected, and the connection pipe 49 and the second pipe member 22 from being connected, and the same effects as described above can be obtained.

  Another example of the connection device will be described with reference to FIG. The connection device shown in FIG. The connection tool 70 is integrally formed of a synthetic resin. The connection tool 70 includes a base base 71, a mount 72 protruding from the base 71, a pair of engagement portions 73 and 74 that are continuous with the mount 72, and a mount 72. Connection pipes 75 and 76 provided continuously and connection pipes 77 and 78 provided continuously on the base 71 are provided. A flow path 79 is formed across the connection pipes 75 and 77 and the base 71 and the mount 72, and a flow path 80 is formed across the connection pipes 76 and 78, the base 71 and the mount 72.

  An auxiliary connecting tube 81 is fitted on the outer periphery of the connecting tube 75, and an auxiliary connecting tube 82 is fitted on the outer periphery of the connecting tube 78. The auxiliary connecting pipes 81 and 82 are integrally formed of a soft synthetic resin or a synthetic rubber, respectively. The inner diameter of the auxiliary connecting pipe 81 is the same as the inner diameter of the first upstream pipe 27, and the inner diameter of the auxiliary connecting pipe 82 is the same as the inner diameter of the second pipe member 22.

  Further, the auxiliary connector 83 is fitted in the first upstream pipe 27, and the auxiliary connector 84 is fitted in the second pipe member 22. The auxiliary connectors 83 and 84 are each integrally formed of a hard synthetic resin. The inner diameter of the auxiliary connection tool 83 is the same as the inner diameter of the connection pipes 75 and 76, and the inner diameter of the auxiliary connection tool 84 is the same as the inner diameter of the connection pipes 77 and 78. The connection tool 70 is attached to the vehicle body 56 in a state where the mount 72 is disposed in the attachment hole 57 and the pair of engaging portions 73 and 74 are engaged with the vehicle body 56.

  When connecting the first upstream pipe 27 and the first pipe member 21 via the connection tool 70, the auxiliary connection tool 83 is fitted into the auxiliary connection pipe 81, and the connection pipe 77 is fitted into the first pipe member 21. Include. Further, when connecting the second upstream pipe 28 and the second pipe member 22 via the connection tool 70, the auxiliary connection tool 84 is fitted into the auxiliary connection pipe 82, and the connection pipe 76 is inserted into the second upstream pipe 28. Fit into. Then, the washer liquid supplied to the first upstream pipe 27 is supplied to the first pipe member 21 through the flow path 79 of the connector 70. Further, the washer liquid supplied to the second upstream pipe 28 is supplied to the second pipe member 22 through the flow path 80 of the connector 70.

  The connection tool 70 shown in FIG. 12 cannot connect the auxiliary connection tool 83 and the connection pipe 76, and cannot connect the second upstream pipe 28 and the auxiliary connection pipe 81. Further, the auxiliary connector 84 and the connection pipe 77 cannot be connected, and the first pipe member 21 and the auxiliary connection pipe 82 cannot be connected. For this reason, it is possible to prevent an operator from erroneously connecting the auxiliary connector 83 and the connection pipe 76 and from erroneously connecting the second upstream pipe 28 and the auxiliary connection pipe 81. In addition, it is possible to prevent an operator from erroneously connecting the auxiliary connector 84 and the connection pipe 77 and from erroneously connecting the first pipe member 21 and the auxiliary connection pipe 82. Therefore, the operating state of the wiper arm 13 and the spraying position of the washer liquid sprayed from the nozzles 19 and 20 can always be maintained in a normal relationship.

  The relationship between the matters described in the embodiment and the connection device and the wiper device will be described. The connection tube 48 is a third tube member, the connection tube 49 is a fourth tube member, and the first engagement portion. 43, the second engaging portion 44, and the concave portions 50 and 51 are positioning mechanisms, the first step portion 39 is a first retaining member, the second step portion 42 is a second retaining member, and the concave portion 50. Is a first recess, the recess 51 is a second recess, and the engaging portion 64 and the recess 65 are positioning mechanisms.

  Needless to say, the control unit and the mounting structure are not limited to the specific examples and can be variously changed without departing from the gist thereof. For example, in addition to a configuration in which the width of the first engagement portion is different from the width of the second engagement portion, a configuration in which the length of the first engagement portion and the length of the second engagement portion are different may be employed. Furthermore, the shape of the first engaging portion may be different from the shape of the second engaging portion. Further, the planar shape of the base portions 32 and 45 is not limited to the track shape, and may be a circle, a square, or the like. Further, the third tube member and the fourth tube member are integrated with the second connector, or the third tube member and the fourth tube member are provided separately from the second connector. Any of the structures may be used.

DESCRIPTION OF SYMBOLS 10 Wiper apparatus 11 Wind shield 12 Pivot shaft 13 Wiper arm 14 Blade 15 Wiper motor 16 Controller 17 Wiper switch 18 Position sensor 19 1st nozzle 20 2nd nozzle 21 1st pipe member 22 2nd pipe members 21A, 22A, 62, 63, 79 , 80 Channel 23 Tank 24 Pump 25 Discharge pipe 26 Switching valve 27 First upstream pipe 28 Second upstream pipe 29 Connection device 30 First connection tool 31 Second connection tool 32, 45, 71 Base 33 First protrusion 34 First 2 protruding portion 35 first arrangement hole 36 second arrangement hole 37, 40 large diameter portion 38, 41 small diameter portion 39 first step portion 42 second step portion 43 first engagement portion 44 second engagement portions 46, 50, 51, 65 Recess 47, 72 Mount 48, 49, 60, 61, 75, 76, 77, 78 Connecting pipe 52 Third engagement portion 53 Fourth engagement portion 54, 5,64,73,74 engaging portion 56 the body 57 mounting hole 58 notch 59 projection portion 70 connector 81, 82 auxiliary connection pipe 83, 84 an auxiliary connector A1 predetermined direction B1 reference position L1, L2, L3, L4 width

Claims (5)

A connecting device provided in a path for sending the washer fluid to the wiper arm and having a first connecting tool and a second connecting tool connected to each other;
A first pipe member and a second pipe member supported by the first connector and arranged in parallel with each other;
A first arrangement hole provided in the first connector and in which the first pipe member is arranged;
A second disposition hole provided in the first connector and in which the second pipe member is disposed;
A third pipe member provided in the second connector and inserted into the first pipe member;
A fourth pipe member provided in the second connector and inserted into the second pipe member;
The first connector and the second connector in the plan view intersecting with the direction in which the third tube member and the fourth tube member are inserted, the first tube member and the second tube member A positioning mechanism for positioning in a circumferential direction centered on a reference position between
A first retaining member provided in the first arrangement hole and sandwiching the first tube member in cooperation with the third tube member;
A second retaining member provided in the second arrangement hole and sandwiching the second pipe member in cooperation with the fourth pipe member;
A connecting device. The connection device according to claim 1,
The positioning mechanism is
Positioning the first connector and the second connector so that the third tube member is inserted into the first tube member and the fourth tube member is inserted into the second tube member; Connected device. The connection device according to claim 2, wherein
The positioning mechanism is
A first engagement portion provided on the first connector;
A second engagement portion provided on the first connection tool and larger than the first engagement portion;
A first recess provided in the second connector and into which the first engagement portion enters; and
A second recess provided in the second connector and entering the second engagement portion and larger than the first recess;
A connecting device. A wiper device comprising: a tank in which washer liquid is stored; a nozzle that sprays the washer liquid sent from the tank onto a windshield; and a wiper arm that wipes the windshield and has the nozzle attached thereto;
The nozzle includes a first nozzle and a second nozzle,
The first nozzle sprays a washer fluid when the wiper arm moves in a direction away from the cowl panel of the vehicle body,
The second nozzle sprays a washer liquid when the wiper arm operates in a direction approaching the cowl panel,
The connection device according to any one of claims 1 to 3 is provided in a path for sending the washer liquid of the tank to the first nozzle and the second nozzle,
The first pipe member is connected to the first nozzle;
The wiper device, wherein the second pipe member is connected to the second nozzle. The wiper device according to claim 4, wherein
The wiper device, wherein the second connector is attached to the vehicle body.

Images