JP7207156B2 - Vehicle opening/closing body stopping device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an opening/closing body stopping device for a vehicle.

Patent Document 1 discloses a vehicle body having an opening formed in the rear portion of the vehicle, a back door that is displaced between a fully open position in which the opening is fully opened and a fully closed position in which the opening is fully closed, and a back door in the fully closed position. and an open/close adjuster that stops at any intermediate position between the fully open positions. The opening/closing adjustment device has an operation member for performing a stop operation and a stop release operation, and an adjustment section that holds the back door so that it can be opened and closed. The adjustment unit locks the back door so that it is not displaced from an arbitrary intermediate position in the opening direction when the operation member is stopped, and unlocks the back door when the operation member is released.

In this way, the user can stop the back door in front of the obstacle in a situation where the back door cannot be opened to the fully open position due to the presence of an obstacle behind the vehicle.

JP 2018-172902 A

The opening/closing adjustment device as described above is installed so as to connect one end of the back door in the vehicle width direction and one end of the vehicle body in the vehicle width direction. For this reason, the operation member of the opening/closing adjustment device is not necessarily located at a position that is easy for the user who opens the back door to operate. SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle opening/closing body stopping device that allows a user to easily perform an operation for stopping an opening/closing body at an arbitrary position.

Means for solving the above problems and their effects will be described below.
A vehicular opening/closing body stopping device that solves the above-described problems provides an opening/closing body that opens and closes between a fully closed position that closes an opening formed in a vehicle body and a fully open position that opens the opening. A vehicular opening/closing body stopping device for stopping at an arbitrary position between the fully open positions, wherein the opening/closing body rotates in a first rotation direction when operated in one of the opening direction and the closing direction, and a drum that rotates in a second rotational direction opposite to the first rotational direction when the body moves in the other of the opening direction and the closing direction; and a lock that restricts rotation of the drum in the first rotational direction. a locking member that moves within a range of movement including a position and an unlocked position that allows rotation of the drum in the first rotational direction; and a locking member that rotates in the first rotational direction after the drum rotates in the second rotational direction. a knocking mechanism that performs a knocking operation with each knocking operation, wherein the knocking mechanism moves the lock member to one of the state of positioning the lock member at the lock position and the state of positioning the lock member at the unlock position. state to the other state.

In the above configuration, the knock mechanism knocks by operating the opening/closing body in one of the opening and closing directions and then in the other direction. That is, the knock mechanism knocks when the user opens and closes the opening/closing body. Therefore, the vehicular opening/closing body stopping device can set the opening/closing body inoperable in the opening direction or the closing direction or eliminate the state in which the opening/closing body cannot operate in the opening direction or the closing direction, according to the user's opening/closing operation of the opening/closing body. . Thus, the user can easily perform an operation for stopping the opening/closing body at a desired position.

The vehicular opening/closing body stopping device includes a worm wheel that rotates based on power transmitted from the drum, and a worm wheel that is axially movable and circumferentially rotatable based on the power transmitted from the worm wheel. and a case having a regulating wall that rotatably supports the worm and regulates the amount of movement of the worm in the axial direction. The knock mechanism is configured to give priority to axial movement of the worm over circumferential rotation of the worm until the worm comes into contact with the regulating wall. It is preferable that the knocking action is performed by moving the worm in the second direction in the axial direction of the worm after moving in the direction.

The vehicular opening/closing body stopping device configured as described above changes the rotational motion of the drum to the axial motion of the worm to cause the knock mechanism to perform a knocking operation. Further, when the worm cannot move in the axial direction due to contact with the regulating wall, the worm rotates in the circumferential direction based on the power transmitted from the worm wheel. Therefore, the vehicular opening/closing body stopping device can suppress the worm from continuing to move in the first direction or the second direction when the opening operation or the closing operation of the opening/closing body continues.

In the above-described vehicular opening/closing body stopping device, the knock mechanism includes a cylindrical body that is fixedly disposed so that axial directions are aligned with the first direction and the second direction, and a cylinder that is pushed by the worm to move the knock mechanism to the cylindrical body. a knock body that moves in the first direction; a rotating body that rotates in the circumferential direction of the cylindrical body with respect to the cylindrical body to change the engagement relationship with the cylindrical body; and a biasing member that biases in the second direction, wherein the cylindrical body has a first engaging surface and a second engaging surface that engage with the rotating body arranged in the circumferential direction of the cylindrical body. and the knock body rotates the rotating body in the first direction until the rotating body disengages from the first engaging surface or the second engaging surface of the cylindrical body in the knocking operation. After rotating the rotating body in the circumferential direction of the cylindrical body by pushing, the rotating body moves in the second direction, and when the rotating body engages with the first engagement surface, the When the lock member is positioned at the advanced position where the lock member is positioned at the unlocked position and engages with the second engagement surface, the lock member is moved from the advanced position in the second direction to the locked position. By rotating in the circumferential direction of the cylindrical body each time the knocking operation is performed, the state of engagement with the first engagement surface and the engagement with the second engagement surface are achieved. It is preferable to switch from one state to the other state.

In the vehicle opening/closing body stopping device having the above-described configuration, the opening/closing body is put into a state inoperable in the opening direction or in the closing direction by switching the engagement state between the cylindrical body and the rotating body based on the movement of the worm in the axial direction. You can remove the inoperable state.

In the vehicle opening/closing body stopping device described above, the vehicle includes a back door as the opening/closing body, and a gas spring for applying a moment for opening the back door to the back door. rotates in the first rotation direction when the opening operation is performed, and rotates in the second rotation direction when the opening/closing body performs the closing operation, and the moment according to the weight of the back door and the reaction force of the gas spring When the position of the back door when the corresponding moments are balanced is assumed to be a neutral position, the knock mechanism is arranged so that the rotating body moves backward when the back door is positioned closer to the fully closed position than the neutral position. It is preferable to have a push body that pushes the rotating body in the first direction so as to move in the first direction rather than position.

When the opening/closing body is positioned between the neutral position and the fully closed position, in other words, when the opening degree of the opening/closing body is small, the need for the user to stop the opening/closing body is low. In this regard, in the above-configured vehicular opening/closing body stopping device, the pushing body moves the rotating body in the first direction from the retracted position when the opening/closing body is located closer to the fully closed position than the neutral position. In this case, even if the user opens and closes the opening/closing body, the rotator cannot move to the retracted position, and the vehicle opening/closing body stopping device cannot stop the opening/closing body. Thus, the vehicular opening/closing body stopping device can improve the user's convenience in that the back door is not inadvertently stopped when the back door is positioned near the fully closed position.

In the vehicle opening/closing body stopping device, the knock mechanism has a relay gear for transmitting power from the drum to the worm wheel, and the relay gear has a cam groove extending in a direction intersecting the axis of the relay gear. is formed, and the push body has a cam shaft that engages the cam groove, and the cam groove is adapted to move the push body in the first direction as the drum rotates in the second direction of rotation. It is preferably configured to move to

According to the above configuration, the push body moves in the first direction when the back door is closed, and the push body moves in the second direction when the back door is opened. That is, the vehicle opening/closing body stopping device can move the push body in the first direction as the back door approaches the closed position.

In the knocking operation, the position after rotation of the rotating body when the knocking body pushes the rotating body engaged with the first engaging surface in the first direction is defined as a first position. pushes the rotating body engaging with the second engaging surface in the first direction, the post-rotation position of the rotating body is defined as a second position; It is preferable to rotate the rotating body to the second position by pushing the rotating body in the first direction when the rotating body is positioned closer to the fully closed position than the fully closed position.

When the back door is opened from the fully closed position, if the rotating body is positioned at the first position, the rotating body engages the second engaging surface of the cylinder during the opening operation of the back door. There is a risk. In this case, since the lock member locks the rotation of the drum in the first rotation direction, there is a possibility that the opening operation of the back door is unintentionally stopped. In this respect, according to the vehicular opening/closing body stopping device having the above configuration, the rotating body is always positioned at the second position when the back door is opened from the fully closed position. Therefore, the vehicular opening/closing body stopping device can prevent the opening operation of the back door from being unintentionally stopped when the back door is opened from the fully closed position.

In the vehicular opening/closing body stopping device described above, the drum is provided with a housing recess that is recessed in the axial direction of the drum, and an engagement recess that is recessed from the housing recess in the radial direction of the drum. , the lock member is accommodated in the accommodation recess, and the lock member is moved to the lock position where it engages with the engagement recess and the unlock position where it does not engage with the engagement recess each time the knocking operation is performed. It is preferable to move within a movement range that includes .

According to the above configuration, in the vehicle opening/closing body stopping device, the lock member can be accommodated in the accommodation recess of the drum. In this respect, the vehicular opening/closing body stopping device can suppress an increase in the size of the device compared to the case where the locking member is arranged outside the housing recess of the drum.

The vehicular opening/closing body stopping device urges the drum and a cable that is let out from the drum when the opening/closing body is opened, and is wound around the drum when the opening/closing body is closed, and a spiral spring that elastically deforms as the drum rotates.

According to the above configuration, the vehicular opening/closing body stopping device rotates the drum in the first rotation direction when the opening/closing body is opened, and rotates the drum in the second rotation direction when the opening/closing body is closed. direction can be rotated.

The vehicular opening/closing body stopping device having the above-described configuration enables a user to easily perform an operation for stopping the opening/closing body at an arbitrary position.

1 is a side view showing a schematic configuration of a vehicle equipped with a stopping device according to one embodiment; FIG. The exploded perspective view of a stop device. FIG. 2 is a perspective view of the stopping device with some components omitted from illustration; FIG. 2 is a perspective view of the stopping device with some components omitted from illustration; FIG. 2 is a perspective view of the stopping device with some components omitted from illustration; Front view of the case of the stopping device. The front view which shows the structure regarding the power transmission of a stopping device. FIG. 2 is a rear view showing a configuration relating to power transmission of the stopping device; The perspective view when the knock mechanism of a stop device is seen from upper direction. The perspective view when the knock mechanism is seen from below. FIG. 4 is a schematic diagram for explaining the operation of the knock mechanism; FIG. 4 is a schematic diagram for explaining the operation of the knock mechanism; FIG. 4 is a schematic diagram for explaining the operation of the knock mechanism; FIG. 4 is a schematic diagram for explaining the operation of the knock mechanism; FIG. 4 is a schematic diagram for explaining the operation of the knock mechanism; FIG. 4 is a front view of the stopping device when the back door is positioned at the fully closed position; FIG. 4 is a side cross-sectional view of the stopping device when the back door is positioned at the fully closed position; FIG. 4 is a front view of the stopping device when the back door is positioned at an intermediate position; FIG. 4 is a side cross-sectional view of the stopping device when the back door is positioned at an intermediate position; The front view of the stopping device when the user starts the stopping operation. FIG. 4 is a side cross-sectional view of the stopping device when a user initiates a stopping operation; The front view of the stopping device when the user finishes the stopping operation. FIG. 11 is a side cross-sectional view of the stopping device when the user finishes the stopping operation; The front view of a stop device when a user starts stop release operation. The front view of a stop device when a user finishes stop release operation. FIG. 5 is a side cross-sectional view of the stopping device when the push body of the knock mechanism comes into contact with the rotating body of the knock mechanism when the back door is closed; FIG. 4 is a schematic diagram for explaining the operation of the knock mechanism; FIG. 4 is a schematic diagram for explaining the operation of the knock mechanism; FIG. 4 is a schematic diagram for explaining the operation of the knock mechanism;

An embodiment of a vehicle provided with a vehicle opening/closing body stopping device (hereinafter also referred to as a "stopping device") will be described below with reference to the drawings.
As shown in FIG. 1, a vehicle 10 includes a vehicle body 12 in which an opening 11 is formed in the rear portion, a back door 20 as an example of an opening/closing member that opens and closes the opening 11, and an opening between the vehicle body 12 and the back door 20. and a stopping device 40 for stopping the back door 20 at an arbitrary position.

The opening 11 has a substantially rectangular shape and opens toward the rear of the vehicle. The opening 11 is an opening for the user to take out luggage from the luggage compartment of the vehicle 10 and for the user to load luggage into the luggage compartment of the vehicle 10 .

The back door 20 has a shape corresponding to the opening 11 . The back door 20 is rotatably supported above the opening 11 via a rotating shaft 21 . The back door 20 is displaced between a “fully open position” at which the opening 11 is opened and a “fully closed position” at which the opening 11 is closed by rotating about a rotation axis extending in the vehicle width direction. The back door 20 also has a door handle 22 that is operated by the user when the user attempts to open the back door 20 .

The gas spring 30 has a tubular cylinder 31 and a rod-shaped piston rod 32 . The gas spring 30 urges the back door 20 with a reaction force of high pressure gas enclosed between the cylinder 31 and the piston rod 32 . The gas spring 30 biases the back door 20 in the opening direction both when the back door 20 is positioned at the fully closed position and when the back door 20 is positioned at the fully open position. A first end of the gas spring 30 is rotatably connected to the vehicle body 12 about an axis extending in the vehicle width direction, and a second end of the gas spring 30 is connected to the back door 20 in the vehicle width direction. It is connected so as to be rotatable about the extending axis.

The weight of the back door 20 , the reaction force of the gas spring 30 , and the user's operation force of the door handle 22 act on the back door 20 . That is, the back door 20 has a first moment corresponding to the weight of the back door 20, a second moment corresponding to the reaction force of the gas spring 30, and a third moment corresponding to the user's operation force. works. Here, the first moment is a moment expressed by the product of the weight of the back door 20 and the distance from the pivot shaft 21 of the back door 20 to the center of gravity of the back door 20 . The second moment is a moment expressed as the product of the reaction force of the gas spring 30 and the distance from the pivot shaft 21 of the back door 20 to the connection position between the back door 20 and the gas spring 30 . The third moment is a moment expressed as the product of the user's operating force and the distance from the pivot shaft 21 of the back door 20 to the door handle 22 . It is assumed that the operating force of the door handle 22 takes a positive value when acting in the direction of opening the back door 20 and takes a negative value when acting in the direction of closing the back door 20 . Further, in the following description, the first moment is expressed as "M1", the second moment as "M2", and the third moment as "M3".

When "M1>M2+M3" is established in the back door 20, in other words, when the moment acting in the closing direction of the back door 20 is larger than the moment acting in the opening direction of the back door 20, the back door 20 performs the closing operation. do. Further, when "M1<M2+M3" holds, in other words, when the moment acting in the opening direction of the back door 20 is larger than the moment acting in the closing direction of the back door 20, the back door 20 is opened. Further, when "M1=M2+M3" holds, in other words, when the moment acting in the closing direction of the back door 20 and the moment acting in the opening direction of the back door 20 are balanced, the back door 20 stops.

In the following description, the position of the back door 20 when "M1=M2" holds when the user does not operate the back door 20 is referred to as the "neutral position". That is, when the back door 20 is positioned closer to the fully closed position than the neutral position, in other words, when the back door 20 is positioned between the neutral position and the fully closed position, the back door 20 tries to close. On the other hand, when the back door 20 is positioned closer to the fully open position than the neutral position, in other words, when the back door 20 is positioned between the neutral position and the fully open position, the back door 20 tries to open.

Next, the stop device 40 will be described in detail.
The stopping device 40 is a device that stops the back door 20 at an arbitrary position between the fully open position and the fully closed position based on the opening and closing operation of the back door 20 by the user.

As shown in FIGS. 2 to 5, the stopping device 40 includes a case 50 that houses the components of the stopping device 40, a cover 70 that forms the exterior of the stopping device 40 together with the case 50, and an opening and closing operation of the back door 20. A drum 80 that rotates in conjunction with it, a cable 90 wound around the drum 80, and a spiral spring 100 that biases the drum 80 are provided. The stopping device 40 includes a relay gear 110 driven by the power transmitted from the drum 80, a worm wheel 120 driven by the power transmitted from the relay gear 110, and a worm driven by the power transmitted from the worm wheel 120. 130 and. The stopping device 40 also includes a lock member 140 that locks the rotation of the drum 80 and a knock mechanism 200 that switches the operating state of the lock member 140 .

As shown in FIG. 6, the case 50 includes a main wall 51 having a flat plate shape, a peripheral wall 52 extending from the main wall 51, a first support shaft 53 supporting the drum 80, and a second support supporting the relay gear 110. A bracket 55 including a shaft 54 and a third support shaft 56 supporting the worm wheel 120 are provided. Further, the case 50 includes a first restricting wall 57 and a second restricting wall 58 that support the worm 130 , an accommodating wall 59 that accommodates the knock mechanism 200 , and a main wall 51 surrounding the first support shaft 53 . and a protruding pedestal 61 .

As shown in FIG. 1 , the case 50 is fixed to the end of the opening 11 of the vehicle body 12 in the vehicle width direction. As shown in FIGS. 4 and 6, the peripheral wall 52 extends from the main wall 51 so as to border most of the main wall 51 . A common hole 62 is formed in the peripheral wall 52 for drawing out the cable 90 from the inside of the case 50 to the outside. The common hole 62 is formed in the case 50 at a position corresponding to the area that accommodates the drum 80 .

The first support shaft 53, the second support shaft 54, and the third support shaft 56 are substantially cylindrical. The first support shaft 53 , the second support shaft 54 and the third support shaft 56 extend in the same direction from the main wall 51 . A fixing groove 63 for fixing the spiral spring 100 is formed radially at the tip of the first support shaft 53 . A bracket 55 including the second support shaft 54 is formed separately from the main wall 51 in order to prevent the second support shaft 54 from interfering with the second regulation wall 58 and the housing wall 59 . The bracket 55 is fixed to the main wall 51 so as to straddle the second regulation wall 58 and the accommodation wall 59 .

A first restricting wall 57 and a second restricting wall 58 extend from the main wall 51 in the same direction as the peripheral wall 52 . The first restricting wall 57 and the second restricting wall 58 are formed at positions facing each other. Bearings 64 that support the ends of the worm 130 are formed on the first and second restricting walls 57 and 58 .

The accommodation wall 59 extends from the base 61 in the same direction as the projection direction of the first support shaft 53 . Accommodating wall 59 defines, together with first restricting wall 57 , first recess 65 for accommodating components of knock mechanism 200 . The pedestal 61 has a substantially columnar shape when viewed from the front in the axial direction of the first support shaft 53 . A second concave portion 66 and a third concave portion 67 are formed in the base 61 in the axial direction of the first support shaft 53 . The second recess 66 is a space for arranging components of the knock mechanism 200 , and the third recess 67 is a space for arranging the lock member 140 .

As shown in FIG. 2 , the cover 70 has a shape that borders the tip of the peripheral wall 52 of the case 50 . The cover 70 may be configured to be fixed to the case 50 with a fastening member such as a screw, or may be configured to be fixed to the case 50 with a snap-fit structure.

As shown in FIG. 2, the drum 80 has a substantially cylindrical shape. As shown in FIGS. 7 and 8, the drum 80 includes a first accommodation recess 81 that accommodates the spiral spring 100, a second accommodation recess 82 that accommodates the lock member 140 as an example of a "accommodation recess", and a lock member. An engagement recess 83 with which the tip of the member 140 engages is formed. The drum 80 also has a circumferential groove 84 for guiding the winding of the cable 90 , an insertion hole 85 into which the first end of the cable 90 is inserted, and a connection for connecting the proximal end of the circumferential groove 84 and the insertion hole 85 . A groove 86 is formed.

The first accommodating recessed portion 81 and the second accommodating recessed portion 82 are substantially cylindrical spaces. The first accommodation recess 81 is formed on the first surface of the drum 80 in the axial direction, and the second accommodation recess 82 is formed on the second surface of the drum 80 in the axial direction. The engagement recess 83 is recessed outward from the second housing recess 82 in the radial direction of the drum 80 . In this embodiment, a plurality of engaging recesses 83 are formed so as to be continuous in the circumferential direction of the drum 80 . The circumferential groove 84 is spirally formed on the outer peripheral surface of the drum 80 . The insertion hole 85 is formed in the axial direction of the drum 80 from the first accommodation recess 81 . A connection groove 86 is formed in the first housing recess 81 of the drum 80 so as to connect the base end of the circumferential groove 84 and the insertion hole 85 .

Further, the drum 80 has a first gear portion 87 formed on the outer peripheral surface of the drum 80 in the circumferential direction, and an engaging portion 88 with which the tip of the spiral spring 100 is engaged. The first gear portion 87 is formed adjacent to the circumferential groove 84 in the axial direction of the drum 80 . As shown in FIG. 7 , the locking portion 88 protrudes from the first housing recess 81 in the axial direction of the drum 80 .

As shown in FIG. 2, the first end of the cable 90 is inserted into the insertion hole 85 of the drum 80 and fixed. A cable 90 extending from the insertion hole 85 is wound around the circumferential groove 84 of the drum 80 . As shown in FIGS. 3 and 4 , the drum 80 is rotatably supported by the first support shaft 53 of the case 50 with the second housing recess 82 facing the pedestal 61 of the case 50 . A base end of the spiral spring 100 is fixed to the fixed groove 63 of the first support shaft 53 of the case 50 , and a distal end of the spiral spring 100 is fixed to the locking portion 88 of the drum 80 . At this time, the spiral spring 100 applies an initial load to the drum 80 in the rotation direction in which the cable 90 is wound. Also, as shown in FIG. 1 , a second end of cable 90 extending from drum 80 is fixed to back door 20 .

In this way, when the back door 20 is opened, the cable 90 is drawn out from the drum 80 because the back door 20 being opened pulls the cable 90 . At this time, the spiral spring 100 is elastically deformed according to the amount of rotation of the drum 80 . On the other hand, when the back door 20 is closed, the drum 80 that is biased by the spiral spring 100 rotates, so that the drum 80 winds up the cable 90 . That is, even when the back door 20 is closed, the cable 90 is not loosened.

In the following description, the direction in which the drum 80 rotates when the back door 20 is opened is referred to as the "first rotation direction R11", and the direction in which the drum 80 rotates when the back door 20 is closed is referred to as the "second rotation direction R11". direction R12”. The first rotation direction R11 is opposite to the second rotation direction R12.

As shown in FIGS. 7 and 8 , the intermediate gear 110 has a second gear portion 111 . The number of teeth of the second gear portion 111 is smaller than the number of teeth of the first gear portion 87 of the drum 80 . As shown in FIG. 8 , a cam groove 112 extending in a direction crossing the axial direction of intermediate gear 110 is formed on one side of intermediate gear 110 . The cam groove 112 has a spiral shape when viewed from the front in the axial direction of the intermediate gear 110 . In the cam groove 112, when the end near the center of the intermediate gear 110 is defined as the first end and the end far from the center of the intermediate gear 110 is defined as the second end, the distance from the center of the intermediate gear 110 to the cam groove 112 is , gradually lengthens from the first end to the second end of the cam groove 112 .

As shown in FIG. 3 , the intermediate gear 110 is rotatably supported by the second support shaft 54 of the case 50 so that the second gear portion 111 meshes with the first gear portion 87 of the drum 80 . Further, the cam groove 112 faces the main wall 51 of the case 50 when the relay gear 110 is supported by the second support shaft 54 .

As shown in FIGS. 7 and 8, the worm wheel 120 has a third gear portion 121 and a fourth gear portion 122. As shown in FIGS. The number of teeth of the third gear portion 121 is smaller than that of the second gear portion 111 of the intermediate gear 110 , and the number of teeth of the fourth gear portion 122 is larger than that of the third gear portion 121 . As shown in FIG. 3 , the worm wheel 120 is rotatably supported by the third support shaft 56 of the case 50 so that the third gear portion 121 meshes with the second gear portion 111 of the relay gear 110 .

As shown in FIGS. 7 and 8, the worm 130 includes a fifth gear portion 131, a first shaft portion 132 extending from a first end of the fifth gear portion 131 in the axial direction, and a and a second shank 133 extending from the second end of the . The axial length of the fifth gear portion 131 is shorter than the length between the first restricting wall 57 and the second restricting wall 58 of the case 50 .

In this embodiment, unlike a general worm gear mechanism, the worm wheel 120 corresponds to the driving gear and the worm 130 corresponds to the driven gear. Therefore, the lead angle of the fifth gear portion 131 is set to a relatively large value so that the self-locking function of the worm gear mechanism does not work.

As shown in FIG. 4 , the worm 130 is supported by the first restricting wall 57 and the second restricting wall 58 of the case 50 so that the fifth gear portion 131 meshes with the fourth gear portion 122 of the worm wheel 120 . Specifically, the first shaft portion 132 of the worm 130 is supported by the bearing 64 of the first restricting wall 57 , and the second shaft portion 133 of the worm 130 is supported by the bearing 64 of the second restricting wall 58 .

Here, since the fifth gear portion 131 of the worm 130 has a threaded tooth portion, when the worm wheel 120 rotates, force acts on the worm 130 in the axial direction, the circumferential direction, and the radial direction of the worm 130. .

In this regard, in this embodiment, the length of the fifth gear portion 131 of the worm 130 in the axial direction is shorter than the length between the first and second restriction walls 57 and 58 of the case 50, so the worm 130 is It becomes movable in the axial direction. Further, since the first restricting wall 57 and the second restricting wall 58 do not hinder the circumferential rotation of the worm 130 , the worm 130 can rotate in the circumferential direction of the worm 130 . However, since the worm 130 is supported by the first restricting wall 57 and the second restricting wall 58, the worm 130 cannot move in the radial direction. The fourth gear portion 122 of the worm wheel 120 and the fifth gear portion 131 of the worm 130 move the worm 130 in the axial direction more than the worm 130 rotates in the circumferential direction when the worm wheel 120 rotates. configured to take precedence.

Therefore, as shown in FIG. 4 , when the worm wheel 120 rotates clockwise when the case 50 is viewed from the front, the first end of the fifth gear portion 131 of the worm 130 contacts the first restricting wall 57 of the case 50 . Worm 130 moves until contact. After the first end of the fifth gear portion 131 of the worm 130 contacts the first restricting wall 57 of the case 50 , the worm 130 rotates in the direction of rotation corresponding to the direction of rotation of the worm wheel 120 . On the other hand, when the worm wheel 120 rotates counterclockwise when the case 50 is viewed from the front, the worm 130 is rotated until the second end of the fifth gear portion 131 of the worm 130 contacts the second regulation wall 58 of the case 50 . Moving. After the second end of the fifth gear portion 131 of the worm 130 contacts the second restricting wall 58 of the case 50 , the worm 130 rotates in the direction of rotation corresponding to the direction of rotation of the worm wheel 120 . Thus, the amount of movement of the worm 130 in the axial direction is defined by the first restricting wall 57 and the second restricting wall 58 .

As described above, the worm wheel 120 and the worm 130 of this embodiment are a mechanism that converts the rotational motion of the worm wheel 120 as a "rotating member" into the linear motion of the worm 130 as a "linear motion member." . Furthermore, this mechanism is also a mechanism that restricts the linear motion of the linear motion member even if the rotating member rotates after the linear motion member has linearly moved by a predetermined amount.

As shown in FIG. 2, the locking member 140 has a plate shape. The locking member 140 tapers from its proximal end to its distal end. A connecting hole 141 is formed through the proximal end of the locking member 140 in the thickness direction of the locking member 140 .

As shown in FIG. 4 , the lock member 140 is accommodated in the third recessed portion 67 of the case 50 . Further, since the pedestal 61 in which the third recess 67 is formed is accommodated in the second accommodation recess 82 of the drum 80, the locking member 140 has its tip end in the engagement recess 83 of the drum 80 as shown in FIG. It is housed in the second housing recess 82 of the drum 80 in the directed state.

The lock member 140 is moved by the operation of the knock mechanism 200 into a "lock position" where it engages with the engagement recess 83 of the drum 80, and an "unlock position" where it does not engage with the engagement recess 83 with the drum 80. Move within the movement range including . The locking member 140 restricts rotation of the drum 80 when positioned at the locked position, and permits rotation of the drum 80 when positioned at the unlocked position.

Next, the knock mechanism 200 will be explained.
In the following description, as shown in FIGS. 9 and 10, the direction in which the components of the knock mechanism 200 are connected is defined as the "axial direction DA", and one direction in the axial direction DA of the knock mechanism 200 is defined as the "first direction DA1 , and the direction opposite to the first direction DA1 is defined as a “second direction DA2”. Further, one direction in the circumferential direction DC of the knock mechanism 200 is defined as "first circumferential direction DC1", and the opposite direction of the first circumferential direction DC1 is defined as "second circumferential direction DC2".

As shown in FIGS. 9 and 10, the knock mechanism 200 includes a tubular body 210 having a tubular shape, a knock body 220 that moves in the axial direction DA with respect to the tubular body 210, and a knock body 220 that moves with respect to the tubular body 210 in the axial direction DA. and a rotating body 240 rotating in the circumferential direction DC with respect to the cylindrical body 210 . Knock mechanism 200 also has a biasing member 250 that biases rotating body 240 in second direction DA2 and a connecting shaft 260 that connects rotating body 240 and lock member 140 .

A first guide groove 211 that guides the movement of the knock body 220 in the axial direction DA and a second guide groove 212 that guides the movement of the push body 230 in the axial direction DA are formed in the cylindrical body 210 . The first guide groove 211 and the second guide groove 212 extend from the end of the cylindrical body 210 in the second direction DA2 toward the first direction DA1.

The cylindrical body 210 includes a first cam surface 213 and a second cam surface 214 that incline toward the second direction DA2 as it progresses in the first circumferential direction DC1, and a first restricting surface 215 and a second cam surface 215 that extend in the axial direction DA. 2 regulating surfaces 216 inside. A plurality of first cam surfaces 213 and second cam surfaces 214 are formed so as to be alternately arranged in the circumferential direction DC. Between the end of the second cam surface 214 in the first circumferential direction DC1 and the end of the first cam surface 213 in the second circumferential direction DC2, a retraction groove 217 extending in the second direction DA2 is formed. The first restricting surface 215 connects the end of the first cam surface 213 in the first circumferential direction DC1 and the end of the second cam surface 214 in the second circumferential direction DC2 to the axial direction DA. The second restricting surface 216 is a surface extending in the second direction DA2 from the end of the first cam surface 213 in the second circumferential direction DC2 and is an inner surface of the retraction groove 217 .

Knock body 220 has a substantially bar shape. Knock body 220 has a first shaft hole 221 extending in first direction DA1 from the end in second direction DA2 and a second shaft hole 222 extending in second direction DA2 from the end in first direction DA1. be done. Knock body 220 includes a first guide shaft 223 extending radially outward from an end in second direction DA2, an intermediate wall 224 between first shaft hole 221 and second shaft hole 222, and knock body 220. It has a third cam surface 225 and a fourth cam surface 226 formed at the ends in the first direction DA1. The third cam surface 225 inclines in the second direction DA2 as it progresses in the first circumferential direction DC1, and the fourth cam surface 226 inclines in the first direction DA1 as it progresses in the first circumferential direction DC1. Tilt to go. A plurality of the third cam surfaces 225 and the fourth cam surfaces 226 are formed so as to be alternately arranged in the circumferential direction DC.

The push body 230 has a substantially cylindrical shape. Push body 230 is formed with a third guide groove 231 extending in first direction DA1 from an end of push body 230 in second direction DA2. The push body 230 includes a second guide shaft 232 extending radially outward from an intermediate portion in the axial direction DA, a cam shaft 233 extending from the tip of the second guide shaft 232, and an end of the push body 230 in the second direction DA2. and a fifth cam surface 234 and a sixth cam surface 235 formed on the portion.

The second guide shaft 232 has a substantially prismatic shape, and the cam shaft 233 has a substantially cylindrical shape. The fifth cam surface 234 inclines in the first direction DA1 as it progresses in the first circumferential direction DC1, and the sixth cam surface 235 inclines in the second direction DA2 as it progresses in the first circumferential direction DC1. Tilt to go. The fifth cam surface 234 is longer than the sixth cam surface 235 in the circumferential direction DC. A plurality of the fifth cam surfaces 234 and the sixth cam surfaces 235 are formed so as to be alternately arranged in the circumferential direction DC. The number of fifth cam surfaces 234 formed on push body 230 is half the number of formed third cam surfaces 225 on knock body 220 , and the number of formed sixth cam surfaces 235 on push body 230 is the same as the number of formed on knock body 220 . 4 This is half the number of cam surfaces 226 formed.

The rotating body 240 has a shaft 241 extending in the axial direction DA and a plurality of ribs 242 radially extending from the shaft 241 in the radial direction of the shaft 241 . An engaging hole 243 is formed in the shaft 241 from the end in the first direction DA1 toward the second direction DA2. The tip of the rib 242 in the second direction DA2 is provided with a seventh cam surface 244 that faces in the second direction DA2 as it progresses in the first circumferential direction DC1.

The biasing member 250 is a so-called coil spring. The connecting shaft 260 has a disk-shaped flange 261, a bending shaft 262 extending from the flange 261 in the first direction DA1, and an engagement shaft 263 extending from the flange 261 in the second direction DA2. The flange 261 serves as a portion that supports the end of the biasing member 250 . The bending shaft 262 bends in a substantially L shape.

Knocking body 220 and pushing body 230 are inserted into cylindrical body 210 in first direction DA1, and rotating body 240, biasing member 250, and connecting shaft 260 are inserted into cylindrical body 210 in second direction DA2. The knock mechanism 200 is configured by being inserted.

When the knock body 220 and the push body 230 are inserted into the cylinder 210, the first guide shaft 223 of the knock body 220 fits in the first guide groove 211 of the cylinder 210 and the third guide groove 231 of the push body 230. , the second guide shaft 232 of the push body 230 is accommodated in the second guide groove 212 of the cylindrical body 210 . In this way, the knock body 220 becomes non-rotatable in the circumferential direction DC and movable in the axial direction DA with respect to the cylindrical body 210 and the push body 230 . Similarly, the push body 230 becomes non-rotatable in the circumferential direction DC and movable in the axial direction DA with respect to the cylindrical body 210 .

When the rotating body 240 is inserted into the cylindrical body 210 , the seventh cam surface 244 of the rotating body 240 contacts the first cam surface 213 of the cylindrical body 210 or the bottom surface 218 of the retraction groove 217 of the cylindrical body 210 . That is, the rotating body 240 is engaged with the cylindrical body 210 . When the rotor 240 is engaged with the cylindrical body 210, rotation of the rotor 240 in the circumferential direction DC is restricted. On the other hand, in a state in which rotating body 240 is not engaged with cylindrical body 210, in other words, in a state in which rotating body 240 is displaced relative to cylindrical body 210 in first direction DA1, rotating body 240 rotates in first circumferential direction DC1. It becomes possible.

When the connecting shaft 260 is inserted into the cylindrical body 210 , the engaging shaft 263 of the connecting shaft 260 is inserted into the engaging hole 243 of the rotating body 240 . Since the connecting shaft 260 is biased in the second direction DA2 by the biasing member 250, the connecting shaft 260 always pushes the rotor 240 in the second direction DA2. Therefore, when the rotating body 240 moves in the first direction DA1 and the second direction DA2, the connecting shaft 260 moves together with the rotating body 240 while being in contact with the rotating body 240 .

As shown in FIGS. 4 and 6 , the knock mechanism 200 is housed across the first recess 65 and the second recess 66 of the case 50 . At this time, the biasing member 250 is compressed between the flange 261 of the connecting shaft 260 and the walls defining the first recess 65 and the second recess 66 of the case 50 . Thus, the biasing member 250 biases the rotating body 240 and the connecting shaft 260 in the second direction DA2. Also, the bent shaft 262 of the connecting shaft 260 is inserted into the connecting hole 141 of the lock member 140 .

As shown in FIGS. 5 and 9 , the first shaft portion 132 of the worm 130 is inserted into the second shaft hole 222 of the knock body 220 . Therefore, when the worm 130 moves in the first direction DA1, the tip of the first shaft portion 132 of the worm 130 pushes the intermediate wall 224 of the knock body 220 in the first direction DA1, and the worm 130 moves in the second direction DA2. , the tip of the first shaft portion 132 of the worm 130 is separated from the intermediate wall 224 of the knock body 220 .

As shown in FIG. 5 , cam shaft 233 of push body 230 of knock mechanism 200 engages cam groove 112 of relay gear 110 . Cam shaft 233 of push body 230 moves along cam shaft 233 when intermediate gear 110 rotates. Specifically, when drum 80 meshing with relay gear 110 rotates in first rotation direction R11, in other words, when back door 20 opens, push body 230 moves in second direction DA2. On the other hand, when the drum 80 meshing with the relay gear 110 rotates in the second rotation direction R12, in other words, when the back door 20 is closed, the push body 230 moves in the first direction DA1.

Next, operation of the knock mechanism 200 will be described with reference to FIGS. 11 to 15. FIG.
11 to 15 show the configuration of the first cam surface 213 and the second cam surface 214 of the cylindrical body 210, the configuration of the third cam surface 225 and the fourth cam surface 226 of the knock body 220, and the third cam surface 226 of the rotating body 240. 7 schematically illustrates the configuration relating to the cam surface 244 .

FIG. 11 shows the positional relationship among cylindrical body 210, knock body 220, and rotating body 240 when knock body 220 is not biased in first direction DA1. As shown in FIG. 11, the rotating body 240 is biased in the second direction DA2 by the biasing member 250, so that the seventh cam surface 244 of the rotating body 240 moves the first cam surface 213 of the tubular body 210 to the second direction. Push in two directions DA2. Since both the first cam surface 213 of the cylindrical body 210 and the seventh cam surface 244 of the rotating body 240 incline toward the second direction DA2 as they progress in the first circumferential direction DC1, they are attached to the second direction DA2. The urged rotating body 240 tries to move along the first cam surface 213 of the cylindrical body 210 . As a result, the rotating body 240 contacts the first cam surface 213 and the first restricting surface 215 of the cylindrical body 210 .

In the following description, the position of the rotating body 240 shown in FIG. 11 is called "advance position". The forward position is a position where the attitude of the rotating body 240 is stabilized by engaging the rotating body 240 with the first cam surface 213 and the first restricting surface 215, which are examples of the "first engaging surface" of the cylindrical body 210. is. When the rotor 240 is at the forward position, the lock member 140 is at the unlock position. The state in which the rotating body 240 is positioned at the advanced position corresponds to a state in which the tip of the knock-type ballpoint pen protrudes from the barrel.

12, when knock body 220 moves in first direction DA1 from the state shown in FIG. 11, third cam surface 225 of knock body 220 moves seventh cam surface 244 of rotating body 240 in the first direction. Push to DA1. When the third cam surface 225 of the knock body 220 moves in the first direction DA1 relative to the first cam surface 213 of the tubular body 210, the rotating body 240 engages the first cam surface 213 and the first restricting surface 215 of the tubular body 210. will not match. Since both the third cam surface 225 of the knocking body 220 and the seventh cam surface 244 of the rotating body 240 incline toward the second direction DA2 as they proceed in the first circumferential direction DC1, the rotating body 240 It tries to move along the third cam surface 225 of the body 220 . Specifically, as shown by a two-dot chain line in FIG. 12, the seventh cam surface 244 of the rotating body 240 rotates relative to the knocking body 220 in the first circumferential direction DC1 so that the seventh cam surface 244 of the knocking body 220 rotates. 3 It slides on the cam surface 225 .

On the other hand, the third cam surface 225 of the knock body 220 and the fourth cam surface 226 adjacent to each other in the first circumferential direction DC1 incline toward the first direction DA1 as it progresses in the first circumferential direction DC1. The seventh cam surface 244 of body 240 does not slide with the fourth cam surface 226 of knock body 220 . As a result, the tip of the rotating body 240 stays at the boundary between the third cam surface 225 of the knock body 220 and the fourth cam surface 226 adjacent to the third cam surface 225 in the first circumferential direction DC1.

In the following description, the position of the rotating body 240 in the circumferential direction DC indicated by the chain double-dashed line in FIG. 12 is referred to as "first position". When the rotating body 240 is located at the first position, at least part of the seventh cam surface 244 of the rotating body 240 faces the second cam surface 214 of the cylindrical body 210 in the axial direction DA.

13, when the knock body 220 moves in the second direction DA2 from the state shown in FIG. 12, the seventh cam surface 244 of the rotating body 240 stops contacting the third cam surface 225 of the knock body 220. . That is, the state in which the third cam surface 225 of the knocking body 220 pushes the seventh cam surface 244 of the rotating body 240 in the first direction DA1 is released, and the seventh cam surface 244 of the rotating body 240 pushes the second cam of the tubular body 210. The surface 214 is pushed. Since both the second cam surface 214 of the cylindrical body 210 and the seventh cam surface 244 of the rotating body 240 incline toward the second direction DA2 as they progress in the first circumferential direction DC1, the rotating body 240 is aligned with the cylindrical body. It tries to move along the second cam surface 214 of the body 210 . Specifically, the seventh cam surface 244 of the rotating body 240 slides on the second cam surface 214 of the cylindrical body 210 so that the rotating body 240 rotates relative to the knock body 220 in the first circumferential direction DC1.

A retraction groove 217 extends in the second direction DA2 between the second cam surface 214 of the cylindrical body 210 and the first cam surface 213 adjacent to the second cam surface 214 in the first circumferential direction DC1. Therefore, if the seventh cam surface 244 of the rotating body 240 continues to slide on the second cam surface 214 of the cylindrical body 210, the ribs 242 of the rotating body 240 will move toward the cylindrical body 210 as shown by the two-dot chain line in FIG. is accommodated in the retraction groove 217 of the That is, the rotating body 240 contacts the second regulating surface 216 of the cylindrical body 210 and the bottom surface 218 of the retraction groove 217 of the cylindrical body 210 .

In the following description, the position of the rotating body 240 shown in FIG. 13, that is, the position where the rotating body 240 has moved in the second direction DA2 from the forward position will be referred to as the "backward position." The retracted position is a position in which the attitude of the rotating body 240 is stabilized by engaging the rotating body 240 with the cylindrical body 210, the second restricting surface 216 as the "second engaging surface", and the bottom surface 218 of the retraction groove 217. be. When the rotor 240 is at the retracted position, the locking member 140 is at the locking position. The state in which the rotating body 240 is positioned at the advanced position corresponds to the state in which the tip of the knock-type ballpoint pen is accommodated in the barrel.

14, when knock body 220 moves in first direction DA1 from the state shown in FIG. 13, third cam surface 225 of knock body 220 moves seventh cam surface 244 of rotating body 240 in the first direction. Push to DA1. When the third cam surface 225 of the knocking body 220 moves in the first direction DA1 relative to the first cam surface 213 of the cylindrical body 210, the rotating body 240 moves to the second regulating surface 216 of the cylindrical body 210 and the bottom surface 218 of the retracting groove 217. cease to engage. Therefore, as indicated by a two-dot chain line in FIG. 14, the seventh cam surface 244 of the rotating body 240 rotates relative to the knocking body 220 in the first circumferential direction DC1. 3 It slides on the cam surface 225 . Thus, the tip of the rotating body 240 stays on the boundary between the third cam surface 225 of the knock body 220 and the fourth cam surface 226 adjacent to the third cam surface 225 in the circumferential direction DC.

In the following description, the position of the rotating body 240 in the circumferential direction DC indicated by a chain double-dashed line in FIG. 14 will be referred to as a "second position". When the rotating body 240 is positioned at the second position, at least part of the seventh cam surface 244 of the rotating body 240 faces the first cam surface 213 of the cylindrical body 210 in the axial direction DA.

15, when knock body 220 moves in second direction DA2 from the state shown in FIG. 14, seventh cam surface 244 of rotating body 240 engages third cam surface 225 of knock body 220. Gone. That is, the state in which the third cam surface 225 of the knock body 220 pushes the seventh cam surface 244 of the rotating body 240 in the first direction DA1 is released, and the seventh cam surface 244 of the rotating body 240 pushes the first cam of the cylindrical body 210. The surface 213 is pushed. Therefore, as indicated by a two-dot chain line in FIG. 15, the seventh cam surface 244 of the rotating body 240 rotates relative to the knocking body 220 in the circumferential direction DC, so that the seventh cam surface 244 of the rotating body 240 is aligned with the first cam of the cylindrical body 210 . It slides on surface 213 . As a result, the rotating body 240 comes into contact with the first cam surface 213 and the first restricting surface 215 of the cylindrical body 210, as in FIG. That is, the rotating body 240 is positioned at the "advance position".

In the following description, as shown in FIGS. 11 to 13 or 13 to 15, in the knock mechanism 200, the movement of the knock body 220 in the first direction DA1 and then in the second direction DA2 will be referred to as the "knock action." ”. Then, the knock mechanism 200 moves the rotating body 240 from the retracted position to the advanced position or moves the rotating body 240 from the advanced position to the retracted position each time the knocking operation is performed. That is, the knock mechanism 200 moves the lock member 140 from the locked position to the unlocked position or moves the lock member 140 from the unlocked position to the locked position each time the knocking operation is performed.

Note that the knock mechanism 200 performs a knock operation by moving the worm 130 in the second direction DA2 after the worm 130 pushes the knock body 220 in the first direction DA1. In other words, the knock mechanism 200 performs a knocking operation when the drum 80 rotates in the first rotation direction R11 after the drum 80 rotates in the second rotation direction R12. Furthermore, in other words, the knock mechanism 200 knocks when the back door 20 opens after the back door 20 closes. The amount of displacement of the back door 20 necessary for causing the knock mechanism 200 to perform a knocking operation may be appropriately set.

Next, operation of the stop device 40 will be described with reference to FIGS. 16 to 29. FIG.
In FIGS. 16 to 29, for ease of explanation of the action of the stop device 40, illustration of a part of the configuration is omitted or simplified.

First, the operation of the stopping device 40 when the user performs a stopping operation and a stopping release operation for the back door 20 opened to an arbitrary position will be described. Here, the stop operation is an operation for disabling the opening operation of the back door 20 that can be opened, and the stop cancellation operation is an operation for enabling the opening operation of the back door 20 that cannot be opened. be. As described above, both the stop operation and the stop release operation are operations of slightly opening the back door 20 after slightly closing the back door 20 .

16 and 17 show the state of the stop device 40 when the back door 20 is positioned at the fully closed position. When the back door 20 is positioned at the fully closed position, the drum 80 is rotated most in the second rotation direction R12, and the relay gear 110 is rotated most in the first rotation direction R21. In other words, the drum 80 is in a state in which the cable 90 is wound most, and the relay gear 110 is in a state in which the pushing body 230 is moved most in the second direction DA2.

When the user opens the back door 20 to an intermediate position between the neutral position and the fully open position, the stopping device 40 enters the state shown in FIGS. 18 and 19. FIG.
As shown in FIGS. 18 and 19 , when the back door 20 is opened from the fully closed position, the cable 90 is drawn out from the drum 80 because the back door 20 being opened pulls the cable 90 . That is, since the drum 80 rotates in the first rotation direction R11, the intermediate gear 110 rotates in the second rotation direction R22 and the worm wheel 120 rotates in the first rotation direction R31.

When intermediate gear 110 rotates in second rotation direction R22, the inner surface of cam groove 112 of intermediate gear 110 and cam shaft 233 of push body 230 of knock mechanism 200 slide. Therefore, push body 230 of knock mechanism 200 moves in second direction DA2. The amount of movement of push body 230 in second direction DA2 is proportional to the amount of rotation of relay gear 110 in second direction of rotation R22.

When the worm wheel 120 rotates in the first rotation direction R31, the worm 130 moves in the second direction DA2 until it contacts the second regulation wall 58 of the case 50, and after contacting the second regulation wall 58, rotates in the circumferential direction DC. rotate to As shown in FIG. 19 , first shaft portion 132 of worm 130 is separated from intermediate wall 224 of knock body 220 of knock mechanism 200 . Therefore, as shown in FIGS. 11 and 19, the rotating body 240 is positioned at the advanced position, and as shown in FIG. 18, the lock member 140 is positioned at the unlocked position.

After that, when the user performs a stop operation, the user slightly closes the back door 20 from the intermediate position.
As shown in FIGS. 20 and 21 , when the back door 20 is slightly closed, the cable 90 becomes slack, so that the cable 90 is wound by the drum 80 . That is, since the drum 80 rotates in the second rotation direction R12, the relay gear 110 rotates in the first rotation direction R21 and the worm wheel 120 rotates in the second rotation direction R32.

When the worm wheel 120 rotates in the second rotation direction R32, the worm 130 moves in the first direction DA1 until it contacts the first regulation wall 57 of the case 50. As shown in FIG. Then, as shown in FIGS. 12 and 21, the worm 130 pushes the knock body 220 in the first direction DA1, so that the rotating body 240 moves in the first direction DA1 from the forward position. As a result, as shown in FIG. 20, the lock member 140 moves in the first direction DA1 from the unlocked position.

Subsequently, the user slightly opens the back door 20 to complete the stop operation. At this time, the user may operate the back door 20 in the opening direction, or simply release the back door 20 . The reason why the back door 20 is opened only by releasing the hand from the back door 20 is that the back door 20 is located closer to the fully open position than the neutral position.

As shown in FIGS. 22 and 23 , when the back door 20 is slightly opened, the back door 20 pulls the cable 90 so that the cable 90 is let out from the drum 80 . That is, since the drum 80 rotates in the first rotation direction R11, the relay gear 110 rotates in the second rotation direction R22, and the worm wheel 120 rotates in the first rotation direction R31. When the worm wheel 120 rotates in the first rotation direction R31, the worm 130 moves in the second direction DA2. Then, as shown in FIGS. 13 and 23, the worm 130 no longer pushes the knock body 220 in the first direction DA1, so the rotating body 240 moves to the retracted position. As a result, as shown in FIG. 22, the lock member 140 moves to the lock position.

As shown in FIG. 22, when the lock member 140 is positioned at the lock position, the drum 80 cannot rotate in the first rotation direction R11. Then, the back door 20 cannot pull out the cable 90 from the drum 80, and the back door 20 cannot be opened. Thus, the stop device 40 brings the back door 20 into a stopped state.

Thereafter, when the user performs the stop release operation, the user slightly closes the back door 20 from the intermediate position.
As shown in FIG. 24 , when the back door 20 is slightly closed, the cable 90 is loosened and the cable 90 is wound by the drum 80 . That is, since the drum 80 rotates in the second rotation direction R12, the relay gear 110 rotates in the first rotation direction R21 and the worm wheel 120 rotates in the second rotation direction R32.

When the worm wheel 120 rotates in the second rotation direction R32, the worm 130 moves in the first direction DA1 until it contacts the first regulation wall 57 of the case 50. As shown in FIG. Then, as shown in FIG. 14, the worm 130 pushes the knock body 220 in the first direction DA1, so that the rotating body 240 moves in the first direction DA1 from the forward position. As a result, as shown in FIG. 24, the lock member 140 moves in the first direction DA1 from the unlocked position.

Subsequently, the user opens the back door 20 to complete the stop release operation. At this time, the user may operate the back door 20 in the opening direction, or simply release the back door 20 .

As shown in FIG. 25 , when the back door 20 is opened, the back door 20 pulls the cable 90 so that the cable 90 is let out from the drum 80 . That is, since the drum 80 rotates in the first rotation direction R11, the intermediate gear 110 rotates in the second rotation direction R22 and the worm wheel 120 rotates in the first rotation direction R31.

When the worm wheel 120 rotates in the first rotation direction R31, the worm 130 moves in the second direction DA2. Then, as shown in FIG. 15, the worm 130 no longer pushes the knock body 220 in the first direction DA1, so that the rotating body 240 moves to the forward position. As a result, as shown in FIG. 25, the lock member 140 moves to the unlock position.

As shown in FIG. 25, when the lock member 140 is positioned at the unlock position, the drum 80 can rotate in the first rotation direction R11. Then, the back door 20 can pull out the cable 90 from the drum 80, and the back door 20 can be opened. Thus, the stopping device 40 releases the stopped state of the back door 20 .

Next, the action of the stop device 40 when the back door 20 is closed will be described.
As shown in FIGS. 20 and 24, during the closing operation of the back door 20, the drum 80 rotates in the second rotation direction R12, so the relay gear 110 rotates in the first rotation direction R21, and the worm wheel 120 It rotates in the second rotation direction R32. When intermediate gear 110 rotates in first rotation direction R21, the inner surface of cam groove 112 of intermediate gear 110 and cam shaft 233 of push body 230 of knock mechanism 200 slide. Therefore, push body 230 of knock mechanism 200 moves in first direction DA1. The amount of movement of push body 230 in first direction DA1 is proportional to the amount of rotation of relay gear 110 in first rotation direction R21. Further, when the worm wheel 120 rotates in the second rotation direction R32, the worm 130 rotates in the circumferential direction DC while being in contact with the first regulation wall 57 of the case 50 .

As shown in FIG. 26 , when the back door 20 is closed to a position closer to the fully closed position than the neutral position, the push body 230 comes into contact with the rotating body 240 . Therefore, when the back door 20 is further closed than the above position, the push body 230 pushes the rotating body 240 in the first direction DA1.

Here, the stopping device 40 restricts or permits the opening operation of the back door 20 according to the position of the locking member 140 . On the other hand, the stop device 40 allows the closing operation of the back door 20 regardless of the position of the lock member 140 . Therefore, when the user starts closing the back door 20, there are cases where the opening operation of the back door 20 is locked and where the opening operation of the back door 20 is not locked. In other words, the user may initiate the closing operation of the back door 20 when the rotating body 240 is positioned at the forward position as shown in FIGS. As shown in FIG. 23, the user may start the closing operation of the back door 20 when the rotating body is in the retracted position.

FIG. 27 shows the operation of the push body 230 when the closing operation of the back door 20 is started under the condition that the stopping device 40 does not lock the opening operation of the back door 20 . 27 corresponds to the position of the rotating body 240 indicated by the two-dot chain line in FIG.

As indicated by the two-dot chain line in FIG. 27 , when the back door 20 is closed to the vicinity of the fully closed position, the fifth cam surface 234 of the push body 230 is positioned at a higher position than the third cam surface 225 of the knock body 220 . When moving in the first direction DA1, the fifth cam surface 234 of the pushing body 230 pushes the seventh cam surface 244 of the rotating body 240 in the first direction DA1. Then, as indicated by a two-dot chain line in FIG. It slides on cam surface 234 .

As a result, the rotating body 240 moves from the first position indicated by the solid line in FIG. 27 to the second position indicated by the two-dot chain line in FIG. 27 in the circumferential direction DC. More specifically, the rotating body 240 moves from a first position where at least part of the seventh cam surface 244 of the rotating body 240 faces the second cam surface 214 of the tubular body 210 in the axial direction DA. , at least a portion of the seventh cam surface 244 of the rotating body 240 moves to the second position facing the first cam surface 213 of the cylindrical body 210 .

On the other hand, FIG. 28 shows the operation of the push body 230 when the closing operation of the back door 20 is started under the condition that the stopping device 40 locks the opening operation of the back door 20 . 28 corresponds to the position of the rotating body 240 indicated by the two-dot chain line in FIG.

As indicated by a two-dot chain line in FIG. 28 , when the back door 20 is closed to the vicinity of the fully closed position, the fifth cam surface 234 of the push body 230 is positioned at a higher position than the third cam surface 225 of the knock body 220 . When moving in the first direction DA1, the fifth cam surface 234 of the pushing body 230 pushes the seventh cam surface 244 of the rotating body 240 in the first direction DA1. Then, as indicated by a two-dot chain line in FIG. It slides on cam surface 234 .

As a result, the rotating body 240 slightly moves in the circumferential direction DC from the second position indicated by the solid line in FIG. 27 to the second position indicated by the two-dot chain line in FIG. More specifically, the rotating body 240 is moved from a second position in the axial direction DA where at least a portion of the seventh cam surface 244 of the rotating body 240 faces the first cam surface 213 of the cylindrical body 210, in the axial direction DA, At least part of the seventh cam surface 244 of the rotating body 240 slightly moves to the second position facing the first cam surface 213 of the cylindrical body 210 . In other words, the position of rotating body 240 before and after movement of push body 230 is both at the second position.

Thus, as shown in FIGS. 27 and 28, the back door 20 is fully closed regardless of whether the rotating body 240 is positioned at the forward position or the retracted position at the start of the closing operation of the back door 20. rotator 240 is always positioned at the second position.

Therefore, when the back door 20 is opened with the rotating body 240 positioned at the second position as indicated by the two-dot chain lines in FIGS. The seventh cam surface 244 of the rotating body 240 slides on the first cam surface 213 of the cylindrical body 210 so that the rotating body 240 rotates with respect to the cylindrical body 210 in the first circumferential direction DC1. Therefore, the rotating body 240 moves to the forward position indicated by the two-dot chain line in FIG. In other words, the stopping device 40 does not stop the opening operation of the back door 20 at the point that the rotating body 240 does not move to the retracted position.

In this way, the push body 230 initializes the position of the rotating body 240 by moving the rotating body 240 to the second position when the back door 20 is closed to the vicinity of the fully closed position. In the following description, the function of pushing body 230 to initialize the position of rotating body 240 will also be referred to as "initialization function".

27 and 28, when the pushing body 230 moves the rotating body 240 from the retracted position in the first direction DA1, that is, when the fifth cam surface 234 of the pushing body 230 , the rotating body 240 cannot move to the retracted position. That is, in this case, the stopping device 40 cannot stop the opening operation of the back door 20 .

In this way, the push body 230 disables the rotation lock of the drum 80 by the lock member 140 by making it impossible to move the rotating body 240 to the retracted position when the back door 20 is positioned near the fully closed position. do. In the following description, the function of the push body 230 that disables the locking of the rotation of the drum 80 is also referred to as the "disabling function".

Here, the position of the back door 20 when the push body 230 starts to disable the rotation lock of the drum 80 under the condition that the back door 20 is closed is defined as the "disabling position". The position of the back door 20 when the position of the rotor 240 is initialized is defined as the "initialization position". In this case, the disabled position is preferably a position between the neutral position and the fully closed position, and the initialization position is preferably a position between the disabled position and the fully closed position.

Effects of the present embodiment will be described.
(1) The knock mechanism 200 knocks by opening the back door 20 after closing it. That is, the knock mechanism 200 knocks when the user opens and closes the back door 20 . Therefore, the stopping device 40 can switch between a state in which the back door 20 cannot be opened and a state in which the back door 20 can be opened by the user's opening/closing operation of the back door 20 . Thus, the user can easily perform an operation to stop the back door 20 at a desired position.

(2) The stop device 40 causes the knock mechanism 200 to perform a knocking operation by changing the rotary motion of the drum 80 to the linear motion of the worm 130 . Further, the stopping device 40 prevents the worm 130 from being transmitted from the worm wheel 120 when the worm 130 contacts the first restricting wall 57 and the second restricting wall 58 and the worm 130 cannot move in the axial direction DA. It rotates in the circumferential direction DC based on the power applied. Therefore, the stopping device 40 can prevent the worm 130 from continuing to move in the first direction DA1 or the second direction DA2 when the back door 20 continues to open or close. For example, compared to a configuration that allows the worm 130 to move endlessly in the first direction DA1 or the second direction DA2, an increase in the size of the stopping device 40 can be suppressed.

(3) When the back door 20 is positioned between the disabled position and the fully closed position, the degree of opening of the back door 20 is small, and the need for the user to stop the back door 20 is low. In this regard, the stopping device 40 causes the pushing body 230 to move the rotating body 240 in the first direction DA1 from the retracted position when the back door 20 is positioned between the disabled position and the fully closed position. That is, in this case, even if the back door 20 is opened and closed, the back door 20 does not stop because the rotating body 240 cannot move toward the retracted position. In this way, the stopping device 40 can improve the user's convenience in that the back door 20 does not stop carelessly when the back door 20 is positioned near the fully closed position.

(4) The push body 230 has a cam shaft 233 that engages with the cam groove 112 of the intermediate gear 110 . Cam groove 112 is formed such that push body 230 moves in first direction DA1 as relay gear 110 rotates in first rotation direction R21. Therefore, when the back door 20 is closed, the push body 230 moves in the first direction DA1, and when the back door 20 is opened, the push body 230 moves in the second direction DA2. That is, the stop device 40 can move the push body 230 in the first direction DA1 as the back door 20 approaches the fully closed position.

(5) When the back door 20 is opened from the fully closed position or near the fully closed position, if the rotating body 240 is positioned at the first position, the rotating body 240 may may engage with the second regulating surface 216 of the cylindrical body 210 and the bottom surface 218 of the retraction groove 217 . In other words, when the back door 20 is opened from the fully closed position or near the fully closed position, if the rotating body 240 is positioned at the first position, the rotating body 240 may move during the opening operation of the back door 20. There is a risk of moving to the retracted position. In this case, since the lock member 140 locks the rotation of the drum 80 in the first rotation direction R11, the opening operation of the back door 20 is stopped.

In this regard, in the stopping device 40, the push body 230 pushes the rotating body 240 in the first direction DA1 when the back door 20 is positioned between the initialization position and the fully closed position, thereby moving the rotating body 240 to the second position. position. That is, when the back door 20 is opened from the fully closed position or near the fully closed position, the rotor 240 is always positioned at the second position. Therefore, the stopping device 40 can prevent the back door 20 from stopping when the back door 20 is opened from the fully closed position.

(6) The stopping device 40 accommodates the lock member 140 in the second accommodation recess 82 of the drum 80 . In this respect, the stopping device 40 can suppress an increase in the size of the device compared to the case where the locking member 140 is arranged outside the second housing recess 82 of the drum 80 .

(7) The stopping device 40 includes a cable 90 that is unwound from the drum 80 when the back door 20 is opened, and a cable 90 wound around the drum 80 when the back door 20 is closed, and an elastic cable 90 that rotates as the drum 80 rotates. and a spiral spring 100 that deforms. Therefore, the stopping device 40 has a simple structure, and rotates the drum 80 in the first rotation direction R11 when the back door 20 is opened, and rotates the drum 80 in the second rotation direction when the back door 20 is closed. It can be rotated to R12.

This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.
One stopping device 40 may be provided at one end of the opening 11 in the vehicle width direction, or may be provided at each end of the opening 11 in the vehicle width direction.

- The case 50 of the stopping device 40 may be attached to the back door 20 . In this case, it is preferable to attach the end of the cable 90 extending from the stopping device 40 to the vehicle body 12 .
- The stopping device 40 does not need to have the cable 90 and the spiral spring 100 as long as the drum 80 can be rotated according to the opening and closing operation of the back door 20 . For example, the stopping device 40 may employ a configuration in which the drum 80 is rotated by the rotation of the rotation shaft 21 of the back door 20, or the drum 80 is rotated by the forward and backward movement of the piston rod 32 with respect to the cylinder 31 of the gas spring 30. A rotating configuration may be employed.

In the stopping device 40, gears in the first gear portion 87 of the drum 80, the second gear portion 111 of the relay gear 110, the third gear portion 121 and the fourth gear portion 122 of the worm wheel 120, and the fifth gear portion 131 of the worm The ratio may be changed as appropriate. Also, the outer diameter of the drum 80 and the shape of the cam groove 112 of the intermediate gear 110 may be changed as appropriate. That is, it is preferable that the amount of movement of the worm 130 in the axial direction DA and the amount of movement of the push body 230 in the axial direction DA with respect to the opening/closing operation amount of the back door 20 are appropriately set according to the specifications of the vehicle 10 .

- The engagement recess 83 of the drum 80 with which the tip of the lock member 140 is engaged need not be formed in the second accommodation recess 82 of the drum 80 . For example, the drum 80 may have a configuration corresponding to the engaging recess 83 on the outer peripheral surface or side surface of the drum 80 .

- The locking member 140 may be configured to limit the rotation of the drum 80 by sliding resistance with the drum 80 . For example, locking member 140 may be a brake pad, brake shoe, or the like.

- Instead of the intermediate gear 110, the worm wheel 120, and the worm 130, the stop device 40 may have a mechanism that converts the rotational motion of the drum 80 into forward and backward motion of the knock body 220. For example, stop device 40 may have a rack and pinion mechanism instead of worm wheel 120 and worm 130 . In this case, the stopping device 40 preferably adopts a configuration that cuts off transmission of power from the pinion to the rack after the rack has moved in the first direction DA1 or the second direction DA2 by an amount necessary for knocking. .

- The driving source of the push body 230 may not be the relay gear 110 . For example, the stop device 40 may employ a mechanism that directly converts the rotational motion of the drum 80 into the forward and backward motion of the push body 230 in the axial direction DA. In this case, if the power of the drum 80 can be transmitted to the worm wheel 120, the stop device 40 does not need to have the relay gear 110.

The second regulating wall 58 of the case 50 may be configured to regulate the amount of movement of the worm 130 in the second direction DA2 by coming into contact with the tip of the second shaft portion 133 of the worm 130 . In other words, the second restricting wall 58 may regulate the amount of movement of the worm 130 in the second direction DA2 by contacting a portion of the worm 130 .

- In the stop device 40, the invalidation function and initialization function of the push body 230 are not essential components. For example, the stopping device 40 may have only the function of disabling the push body 230 or only the function of initializing the push body 230 .

- The stopping device 40 may set the disabling position where the disabling function of the push body 230 starts to function when the back door 20 is closed, to a position closer to the fully open position than the neutral position. Similarly, the initialization position at which the initialization function of push body 230 starts functioning when back door 20 is closed may be set closer to the fully open position than the neutral position.

- The stopping device 40 may be applied to the bonnet of the vehicle 10 and the side door of the vehicle 10 as an example of the opening/closing body of the vehicle 10 . The side door of the vehicle 10 may be a swing door or a gull wing. The stopping device 40 is preferably applied to an opening/closing body in which an operation range is set to operate in the opening direction or the closing direction. In the above embodiment, the range from the neutral position to the fully open position corresponds to the operating range in which the opening/closing body attempts to open.

For example, when an opening/closing body such as the bonnet of the vehicle 10 is urged to close, the stopping device 40 causes the knock mechanism 200 to perform a knocking operation when the opening/closing body is closed after being opened. preferably configured. In this case, it is preferable that the rotation direction of the drum 80 when the bonnet is closed is the first rotation direction R11, and the rotation direction of the drum 80 when the hood is opened is the second rotation direction R12. According to this, the stopping device 40 can stop the bonnet, which is about to close due to its own weight, at an arbitrary position. In other words, the vehicle does not need to have a supporting member for supporting the bonnet at any position.

DESCRIPTION OF SYMBOLS 10... Vehicle 11... Opening part 12... Vehicle body 20... Back door (an example of an opening-and-closing body) 21... Rotating shaft 22... Door handle 30... Gas spring 31... Cylinder 32... Piston rod 40 Stopping device 50 Case 51 Main wall 52 Peripheral wall 53 First support shaft 54 Second support shaft 55 Bracket 56 Third support shaft 57 First regulation wall (regulation Example of wall), 58 Second control wall (example of control wall) 59 Accommodating wall 61 Pedestal 62 Through hole 63 Fixed groove 64 Bearing 65 First recess 66 Second 2 recesses 67... third recess 70... cover 80... drum 81... first accommodation recess 82... second accommodation recess (an example of accommodation recess) 83... engagement recess 84... circumferential groove 85... Insertion hole 86 Connection groove 87 First gear portion 88 Locking portion 90 Cable 100 Spiral spring 110 Intermediate gear 111 Second gear portion 112 Cam groove 120 Worm Wheel 121 Third gear portion 122 Fourth gear portion 130 Worm 131 Fifth gear portion 132 First shaft portion 133 Second shaft portion 140 Lock member 141 Connection hole , 200... Knock mechanism 210... Cylindrical body 211... First guide groove 212... Second guide groove 213... First cam surface (an example of first engagement surface) 214... Second cam surface 215... First restricting surface (an example of a first engaging surface) 216... Second restricting surface (an example of a second engaging surface) 217... Retreat groove 218... Bottom surface (an example of a second engaging surface) 220... Knock body 221 First shaft hole 222 Second shaft hole 223 First guide shaft 224 Intermediate wall 225 Third cam surface 226 Fourth cam surface 230 Push body 231 Third guide groove 232 Second guide shaft 233 Cam shaft 234 Fifth cam surface 235 Sixth cam surface 240 Rotating body 241 Shaft 242 Rib 243 Engagement hole , 244 Seventh cam surface 250 Biasing member 260 Connecting shaft 261 Flange 262 Bending shaft 263 Engagement shaft DA Axial direction DA1 First direction DA2 Second direction , DC: circumferential direction, DC1: first circumferential direction, DC2: second circumferential direction, R11 to R31: first rotational direction, R12 to R32: second rotational direction.

Claims (8)

A vehicle that stops an opening/closing body that opens and closes between a fully closed position that closes an opening formed in the vehicle body and a fully open position that opens the opening at an arbitrary position between the fully closed position and the fully opened position. An opening/closing body stopping device for
When the opening/closing body operates in one of the opening direction and the closing direction, it rotates in the first rotation direction, and when the opening/closing body operates in the other of the opening direction and the closing direction, it rotates in the first rotation direction. a drum that rotates in a second opposite direction of rotation;
a lock member that moves within a movement range including a lock position that restricts rotation of the drum in the first rotation direction and an unlock position that allows rotation of the drum in the first rotation direction;
a knock mechanism that performs a knocking operation by rotating the drum in the first rotation direction after rotating in the second rotation direction;
The knock mechanism switches from one of a state in which the lock member is positioned at the lock position and a state in which the lock member is positioned at the unlock position to the other state each time the knock operation is performed. stop device. a worm wheel that rotates based on the power transmitted from the drum; a worm that is axially movable and circumferentially rotatable based on the power transmitted from the worm wheel; and the worm is rotatable. a case having a regulating wall that supports the worm and defines the amount of movement of the worm in the axial direction,
the worm is configured to give priority to axial movement of the worm over circumferential rotation of the worm until contact with the restricting wall when power is transmitted from the worm wheel;
2. The knocking mechanism according to claim 1, wherein the worm moves in the first direction in the axial direction of the worm, and then the worm moves in the second direction in the axial direction of the worm to perform the knocking operation. Vehicle opening/closing body stopping device. The knock mechanism is
a cylindrical body fixedly arranged such that axial directions are in the first direction and the second direction;
a knock body that is pushed by the worm and moves in the first direction with respect to the cylindrical body;
a rotating body whose engagement relationship with the cylinder changes by rotating in the circumferential direction of the cylinder with respect to the cylinder;
a biasing member that biases the rotating body in the second direction;
The cylindrical body is formed so that a first engaging surface and a second engaging surface that engage with the rotating body are arranged in a circumferential direction of the cylindrical body,
In the knocking operation, the knocking body pushes the rotating body in the first direction until the rotating body is no longer engaged with the first engaging surface or the second engaging surface of the cylindrical body. After rotating the rotating body in the circumferential direction of the cylindrical body, it moves in the second direction,
The rotating body is
When engaged with the first engagement surface, the lock member is positioned at the advanced position to position the lock member at the unlocked position. located at a retracted position where the lock member is positioned at the lock position by moving in the second direction;
Each time the knocking operation is performed, the cylindrical body rotates in the circumferential direction to switch from one of the state of engaging with the first engaging surface and the state of engaging with the second engaging surface to the other state. 3. The vehicle opening/closing body stopping device according to claim 2. The vehicle includes a back door as the opening/closing body, and a gas spring that imparts a moment to the back door to open the back door,
the drum rotates in the first rotation direction when the back door is opened, and rotates in the second rotation direction when the opening/closing body is closed;
When the position of the back door when the moment corresponding to the self weight of the back door and the moment corresponding to the reaction force of the gas spring are balanced is defined as a neutral position,
The knock mechanism moves the rotator so that the rotator moves in the first direction from the retracted position when the back door is positioned closer to the fully closed position than to the neutral position. The vehicle opening/closing body stopping device according to claim 3, further comprising a push body that pushes in one direction. The knock mechanism has a relay gear that transmits power from the drum to the worm wheel,
A cam groove extending in a direction intersecting the axis of the intermediate gear is formed in the intermediate gear,
The push body has a cam shaft that engages with the cam groove,
5. The vehicle opening/closing body stopping device according to claim 4, wherein the cam groove is formed such that the push body moves in the first direction as the drum rotates in the second rotation direction. In the knocking operation, the position after rotation of the rotating body when the knocking body pushes the rotating body engaged with the first engaging surface in the first direction is defined as a first position. pushes the rotating body engaging with the second engaging surface in the first direction, the post-rotation position of the rotating body being a second position;
The push body pushes the rotating body in the first direction to rotate the rotating body to the second position when the back door is positioned closer to the fully closed position than the neutral position. The vehicle opening/closing body stopping device according to claim 4 or 5. The drum is provided with a housing recess recessed in the axial direction of the drum and an engagement recess recessedly formed from the housing recess in the radial direction of the drum,
The lock member is accommodated in the accommodation recess,
Each time the locking member is knocked, the locking member moves within a movement range including the locking position where it engages with the engaging recess and the unlocking position where it does not engage with the engaging recess. 7. The vehicle opening/closing body stopping device according to any one of 6. a cable that is unwound from the drum when the opening/closing body performs an opening operation and is wound around the drum when the opening/closing body performs a closing operation;
The vehicular opening/closing body stopping device according to any one of claims 1 to 7, further comprising: a spiral spring that biases the drum and elastically deforms as the drum rotates.

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