JP6331653B2 - Equipment lifting device - Google Patents

Description

  The present invention relates to an accessory lifting device for moving an accessory up and down.

  2. Description of the Related Art Conventionally, a gaming machine including an accessory that performs a moving operation by a driving force transmitted from a driving source is known.

  For example, Patent Document 1 discloses an accessory that moves up and down in a vertical direction of a pachinko gaming machine by a driving force of a motor.

JP 2013-248150 A (released on December 12, 2013)

  By the way, in order to properly operate the accessory, it is necessary to keep the accessory from moving from the standby position by its own weight or external force during the period in which the accessory is waiting at the predetermined standby position. .

  However, in the case of an accessory that moves up and down in the vertical direction, the accessory may fall from a predetermined standby position and deviate from the standby position due to external force such as the weight of the accessory or vibration acting on the accessory. . That is, the accessory is generally held so as not to descend from a predetermined standby position by an operating resistance corresponding to the gear reduction ratio or a rotational resistance of the motor. When an external force is applied, the object may drop.

  The external force acting on the accessory is, for example, (i) various vibrations that occur during the game (vibrations associated with the launching or movement of game balls, vibrations associated with the movement of other actors, or user actions). Vibration, etc.), (ii) external force that acts when the clerk makes contact with an object by mistake when removing a clogged ball, etc., (iii) external force that acts when the game machine is transported, installed, moved, etc. Can be considered.

  Therefore, in order to securely hold the accessory at the standby position, it may be possible to provide an actuator or the like for holding the accessory at the standby position. Problem arises.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to appropriately prevent an accessory performing an ascending / descending operation from descending from a predetermined standby position with an inexpensive configuration.

  A gaming machine according to one aspect of the present invention includes a rack on which an accessory is attached, and a plurality of gears that are arranged side by side along the movement direction of the rack and transmit a driving force transmitted from a driving source to the rack. A lifting / lowering device for raising and lowering the rack by the driving force, and locking the rack so as to prevent the rack from being lowered when the rack is disposed at a predetermined standby position. A lock lever; and a stopper that abuts the lock lever in a state in which the rack is locked and prevents the lock from being released due to the weight of the rack or an external force acting on the rack. It is characterized by that.

  According to the above configuration, the lock lever locks the rack when the rack is disposed at a predetermined standby position. Further, the stopper abuts against the lock lever in a state of locking the rack, and prevents the lock from being released due to the weight of the rack or an external force acting on the rack. Accordingly, it is possible to reliably prevent the rack and the accessory from descending due to the weight of the rack or an external force acting on the rack with an inexpensive configuration.

  In addition, the rack includes a protruding portion that contacts the lock lever. The lock lever includes a first inclined portion that is inclined in a direction away from the stopper from below and upward, and the first inclined portion. A second sloped portion that is also provided above and is inclined in a direction approaching the stopper from below to above, and a bank portion that connects an upper end portion of the first inclined portion and a lower end portion of the second inclined portion. A rotation shaft that rotatably supports the lock lever at a position above the second inclined portion of the lock lever, and a bias that biases the lock lever in a direction away from the stopper. And the lock lever rotates in a direction approaching the stopper when the rack moves upward in a state where the protruding portion is in contact with the first inclined portion. When the portion moves further upward beyond the bank portion, it rotates in a direction away from the stopper by the urging force of the urging member, and the second inclined portion is pressed against the protruding portion to engage the rack. The structure which stops may be sufficient.

  According to the above configuration, the rack can be prevented from descending from the standby position by its own weight or external force with a simple and inexpensive configuration.

  A stopper ring that is rotationally driven by the driving force together with one of the plurality of gears, and the stopper is disposed so as to protrude radially outward from an outer peripheral surface of the stopper ring; and A first abutting surface along the radial direction of the stopper ring, and a second abutting surface along the circumferential direction of the stopper ring, wherein the lock lever abuts on the first abutting surface. A force that causes the lock lever to rotate the lock lever in a direction approaching the stopper by the weight of the rack or an external force acting on the rack. It is good also as a structure by which rotation of the said lock lever is controlled when the said 2nd surface and the said 2nd contact surface contact | abut.

  According to said structure, when said 2nd surface and said 2nd contact surface contact | abut, rotation of the said lock lever is controlled, The said protrusion part exceeds the said bank part, and the said latching is cancelled | released Can be prevented.

  Further, the rack includes a tooth surface that meshes with a lower end gear that is a lowermost gear among the plurality of gears, and gears other than the lower end gear among the plurality of gears are separated from the tooth surface. The driving force is sequentially transmitted from an upper end gear, which is the uppermost gear among the plurality of gears, to a gear disposed at the lower side, and the stopper ring includes the upper end gear. In addition, the stopper may be driven to rotate by the driving force, and the stopper may be released from contact with the lock lever when the stopper ring is rotated by the driving force.

  According to said structure, contact | abutting with the said stopper and the said lock lever can be cancelled | released by rotationally driving the said stopper ring with the drive force from a drive source. Further, there is a time difference due to backlash (gap between tooth surfaces) between the gears from the start of rotation of the upper end gear to the start of rotation of the lower end gear until the rack starts to move. For this reason, since the rack can be started to descend after the upper end gear and the stopper ring are rotated to release the contact between the stopper and the lock lever, the descending operation from the standby position of the rack can be smoothly performed. it can.

  Further, the second surface may have a shape along the rotation direction of the stopper ring.

  According to the above configuration, since the second surface has an arc shape centered on the rotation axis of the stopper ring, the second ring is rotated by rotating the stopper ring with the driving force when releasing the locking. By causing slippage between the surface and the second contact surface, the contact state between the second surface and the second contact surface can be easily released.

  The stopper ring further includes a second biasing member that applies a biasing force in a direction in which the first surface is pressed against the first contact surface. The stopper ring has a biasing force of the second biasing member. When a force in a direction opposite to the direction is applied, the second gear can rotate relative to the gear that rotates together with the stopper ring, and the second portion of the stopper is in contact with the bank portion. The lower end portion of the abutting surface interferes with the upper end portion of the second surface of the lock lever so that the second surface and the second abutting surface do not come into surface contact, and the protruding portion becomes the second inclined portion. It is good also as a structure which the said 2nd surface and said 2nd contact surface contact | abut in surface contact.

  According to the above configuration, the lower end portion of the second contact surface of the stopper interferes with the upper end portion of the second surface of the lock lever when the protruding portion is in contact with the bank portion. The second surface and the second contact surface are in surface contact when the second surface and the second contact surface are not in surface contact and the protrusion is in contact with the second inclined portion. Thereby, the relative position of the stopper and the lock lever can be appropriately defined in accordance with the lifting and lowering operation of the rack.

  According to the above gaming machine, it is possible to reliably prevent the rack and the accessory from descending due to the weight of the rack or an external force acting on the rack with an inexpensive configuration.

It is explanatory drawing which shows the structure of the game machine provided with the accessory lifting apparatus which concerns on one Embodiment of this invention. It is explanatory drawing which shows the structure of the accessory lifting apparatus with which the gaming machine shown in FIG. 1 is equipped. It is explanatory drawing which shows the structure of the gear and stopper ring with which the accessory lifting apparatus shown in FIG. 2 is equipped. It is explanatory drawing which shows the state in the descent | fall operation | movement in the accessory lifting apparatus shown in FIG. It is explanatory drawing which shows the state in the descent | fall operation | movement in the accessory lifting apparatus shown in FIG. It is explanatory drawing which shows the state in the descent | fall operation | movement in the accessory lifting apparatus shown in FIG. It is explanatory drawing which shows the state in the raising operation | movement in the accessory lifting apparatus shown in FIG. It is explanatory drawing which shows the state in the raising operation | movement in the accessory lifting apparatus shown in FIG. It is an enlarged view of the contact part of the stopper and lock lever in FIG. It is explanatory drawing which shows the state in the raising operation | movement in the accessory lifting apparatus shown in FIG.

  An embodiment of the present invention will be described.

(1-1. Overall configuration of gaming machine 1)
FIG. 1 is an explanatory diagram showing the configuration of the gaming machine 1 according to the present embodiment. In the present embodiment, the case where the present invention is applied to a pachinko machine that is an example of a gaming machine will be described. However, the scope of application of the present invention is not limited to this, for example, a slot machine, various game machines, It can also be applied to an exhibition device or the like.

  As shown in FIG. 1, the gaming machine 1 includes a game area 11, a display device 12, a handle 13, an upper plate 14, a lower plate 15, and an accessory (movable accessory) 16.

  The game area 11 is an area in which a game ball (game medium) launched by the handle 13 moves.

  The handle 13 is a device for launching a game ball. When the user holds the handle 13 in a twisted state, the game ball is continuously launched and launched into the game area 11.

  The upper plate 14 stores game balls acquired by the game, and the lower plate 15 stores game balls overflowing from the upper plate 14. Further, the lower plate 15 is provided with a discharge port for discharging the game ball and a discharge shutter for opening and closing the discharge port (both not shown), and the user performs an operation of opening the discharge shutter, The game balls stored in the lower plate 15 are discharged from the lower plate 15 below the lower plate 15.

  Various images and various information such as various effect images according to the state of the game and operation guide information presented to the user are displayed on the display device 12.

  The accessory 16 is provided so as to be moved up and down in the vertical direction by the accessory lifting device 20 described later. The accessory 16 is held at a predetermined standby position (original position) set at the upper part of the vertical movement path when not driven.

  The operation of each part of the gaming machine 1 is controlled by a control unit (not shown) provided in the gaming machine 1. The control unit includes, for example, a CPU (Central Processing Unit) and the like, and is used for detection results of various sensors provided in the gaming machine 1 and programs and various data stored in storage means (not shown) such as a ROM. Based on this, the operation of each part of the gaming machine 1 is controlled. For example, the control unit controls the operations of the accessory 16 and the electrical decoration member provided in the gaming machine 1 according to the progress of the game, the lottery result on the game, and the like.

(1-2. Configuration of the accessory lifting device 20)
FIG. 2 is an explanatory diagram showing the configuration of the accessory lifting device 20. As shown in this figure, the accessory lifting device 20 includes a rack 30, a lock lever 40, gears 50 to 55, and a stopper ring 60.

  The rack 30 is a rod-shaped (or plate-shaped) member that moves along the moving direction (vertical direction) of the accessory 16, and meshes with the gear 55 at one of the side end surfaces along the moving direction. A tooth surface 31 made up of a large number of teeth is formed.

  The gears 50 to 55 are arranged in this order from the upper side to the lower side along the moving direction of the rack 30, and the gear (lower end gear) 55 is engaged with the tooth surface 31 of the rack 30. The gear (upper gear) 50 is connected to a motor (drive source) (not shown) directly or via another gear (not shown). When the gear 50 is rotated by the drive force from the motor, the drive force is increased. Is transmitted to the gear 55 via the gears (connection gears) 51 to 54, and is transmitted to the rack 30 via the gear 55.

  A part of the rack 30 is inserted into a groove 21 formed along the vertical direction provided in the accessory lifting device 20, and the driving force of the motor is transmitted along the groove 21. The rack 30 and the accessory 16 are moved up and down in the vertical direction. In the present embodiment, the moving direction of the accessory 16 (the formation direction of the groove 21) is the vertical direction, but it is not necessarily strictly the vertical direction, and may be a direction inclined with respect to the vertical direction. Good.

  The lock lever 40 is rotatably supported by a rotation shaft 41 fixed to the casing of the accessory lifting device 20. The lock lever 40 is pulled in the direction of arrow A shown in FIG. As a result, the lock lever 40 engages with a locking boss (protrusion) 32 provided on the rack 30 when the rack 30 and the accessory 16 are arranged at a predetermined standby position (position shown in FIG. 2). Thus, the rack 30 is prevented from being lowered by its own weight or external force.

  Specifically, as shown in FIG. 2, the lower end portion of the lock lever 40 includes a first inclined portion 44 a inclined in a direction away from the gears 50 to 55 from the lower side to the upper side, and the first inclined portion 44 a. A second inclined portion 44c that is provided above and is inclined in a direction approaching the gears 50 to 55 from below to above, and an upper end portion of the first inclined portion 44a and a lower end portion of the second inclined portion 44c. A locking portion 44 is provided that includes a connecting bank portion 44b.

  Thereby, in the standby position, the second inclined portion 44 c is pressed against the locking boss 32 by the tensile force of the spring 42, the locking boss 32 is hooked on the locking portion 44, and the rack 30 is engaged with the lock lever 40. It has come to be stopped.

  FIG. 3 is an explanatory diagram showing the configuration of the gear 50 and the stopper ring 60. As shown in this figure, the gear 50 is formed of two members, a gear 50a and a gear 50b.

  The gear 50a is provided with a cylindrical portion 50c that protrudes in the direction of the rotation axis of the gear 50a and an engaging convex portion 50d that protrudes further in the direction of the rotation axis from the cylindrical portion 50c. The gear 50b is cut in the direction of the rotation axis. An extracted engagement recess 50e is provided. Thereby, the engaging convex part 50d of the gear 50a is fitted in the engaging concave part 50e of the gear 50b, and the gear 50a and the gear 50b rotate integrally. The gear 50a is engaged with the gear 51, and the gear 50b is directly or indirectly connected to the motor.

  The stopper ring 60 has a hollow substantially cylindrical shape, and the cylindrical portion 50c of the gear 50a is inserted through the hollow portion. A spring 61 (second urging member) is inserted between the stopper ring 60 and the gear 50a. Further, one end 61a of the spring 61 is fixed to the gear 50a, and the other end 61b is fixed to the stopper ring 60. The stopper ring 60 rotates the rack 30 by the spring 61 (see FIG. 3). Energized in the direction of arrow B).

  Thereby, the stopper ring 60 rotates with the gear 50 by the drive force from a motor. Further, a stopper 62 projecting radially outward is provided on a part of the outer peripheral surface of the stopper ring 60, and an external force in a direction opposite to the biasing force of the spring 61 is applied to the stopper 62 against the lock lever 40. In this case, the stopper ring 60 can be rotated relative to the gear 50 within a predetermined angle range.

  Further, as shown in FIG. 2, the stopper 62 includes a first contact surface 62 a along the radial direction of the stopper ring 60 and a second contact surface 62 b along the circumferential direction of the stopper ring 60. Yes.

  The lock lever 40 is opposed to the stopper ring 60 at the first surface 43 a that contacts the first contact surface 62 a of the stopper 62 and the second surface 43 b that contacts the second contact surface 62 b of the stopper 62. And are provided. Note that the second surface 43 b has an arc shape substantially parallel to a circle centered on the rotation axis (rotation center) of the stopper ring 60 at the contact position with the stopper 62.

  Further, in the state where the rack 30 is disposed at the standby position, the position (angle) in the rotation direction of the gear 55 is defined as a position that meshes with the tooth surface 31 of the rack 30, and the positions of the gears 50 to 54 and the stopper ring 60 are It depends on the position of the gear 55 and the backlash (gap between tooth surfaces) between the gears.

(1-3. Operation of the accessory lifting device 20)
(1-3-1. Descent operation)
In FIG. 4, the gear 50 is moved in a direction (counterclockwise direction in FIG. 4) for lowering the rack 30 by the driving force of the motor from the state in which the rack 30 is disposed at a predetermined standby position (reference position). 5 is an explanatory view showing a state in which a small amount (9.9 ° in the example of FIG. 4) is rotated.

  As shown in FIG. 4, when the gear 50 is rotated by a small amount in the direction for lowering the rack 30 from the standby position, the rack 30 is in contact with the locking portion 44 of the lock lever 40 (in the example of FIG. .55mm) descend. Note that due to the backlash between the gears, the driving force in the descending direction from the motor does not substantially act on the rack 30 until the gear 50 starts to rotate by the driving force of the motor and then rotates by a predetermined angle.

  Further, in this state, a force to rotate the lock lever 40 toward the gear 50 side is exerted by the weight of the rack 30 and the accessory 16, but the second contact surface 62 b of the stopper 62 is Since the rotation of the lock lever 40 toward the gear 50 is restricted by coming into contact with the second surface 43b, the locked state between the lock lever 40 and the locking boss 32 is not released. Therefore, the rack 30 and the accessory 16 are held at a position where the locking boss 32 is in contact with the lock lever 40.

  FIG. 5 shows a state in which the gear 50 is further rotated in the direction for lowering the rack 30 from the standby position, and is rotated to a position (19.9 ° in the example of FIG. 5) that is disengaged from the first surface 43a of the lock lever. It is explanatory drawing which shows a state.

  As shown in FIG. 5, when the stopper ring 60 is rotated by the driving force of the motor and the position of the first contact surface 62a of the stopper 62 reaches a position of 19.9 ° from the reference position, the second of the lock lever 40 is reached. The contact between the surface 43b and the second contact surface 62b of the stopper 62 is released. As a result, the lock lever 40 becomes rotatable to the gear 50 side from the position where the lock boss 32 is locked, and the lock lever 40 is moved from the lock boss 32 of the rack 30 by its own weight and the driving force of the motor. A downward force is applied to the second inclined portion 44c, and the lock lever 40 rotates to the gear 50 side. As a result, the latched state of the rack 30 by the lock lever 40 is released, and the rack 30 can be lowered.

  FIG. 6 is an explanatory diagram showing a state in which the rack 30 is lowered to the shortest operating range of the raising / lowering operation. As shown in this figure, when the locking boss 32 is lowered from the contact portion with the lock lever 40, the lock lever 40 is rotated away from the stopper ring 60 by the tension force of the spring 42, and the accessory lifting / lowering device 20. Retreats to the retreat position where it comes into contact with the retraction stopper 22 fixed to the casing. When the lock lever 40 is retracted to the retracted position, the stopper 62 and the lock lever 40 do not come into contact with each other even if the stopper ring 60 rotates, so that the lock lever 40 does not interfere with the rotation of the stopper ring 60. .

(1-3-2. Ascending operation)
FIG. 7 is an explanatory view showing a state in which the rack 30 is raised and the stopper ring 60 and the gear 50 reach the position of 19.9 ° to the reference position. At this position, as shown in FIG. 7, the locking boss 32 of the rack 30 abuts against the bank portion 44b of the lock lever 40, and the lock lever 40 is pushed and spread toward the gear 50 side. Further, the lower end portion of the second contact surface 62b of the stopper 62 (the corner portion formed by the first contact surface 62a and the second contact surface 62b) is the upper end portion (second surface) of the second surface 43b of the lock lever 40. 43b), the rotation of the stopper ring 60 is obstructed. At this time, the stopper ring 60 is urged by the spring 61, and is rotated relative to the gear 50 when an external force in a direction opposite to the urging force of the spring 61 is applied. The rotation is inhibited and the second surface 43 b and the second contact surface 62 b do not come into surface contact, and the gear 50 rotates relative to the stopper ring 60.

  FIG. 8 shows a state where the rack 30 is further raised from the state shown in FIG. 7 and the locking boss 32 reaches the vicinity of the upper end of the bank portion 44 b of the lock lever 40. FIG. 9 is an enlarged view of a contact portion between the lock lever 40 and the stopper 62 in FIG. 8 and 9, the first surface 43a of the lock lever 40 and the reference surface of the gear 50 (the first contact surface 62a of the stopper 62 when the lock lever 40 of the gear 50 is not in contact with the stopper 62). The angle formed between the first surface 43a of the lock lever 40 and the first contact surface 62a of the stopper 62 is 16.6 °.

  That is, when the stopper ring 60 is fixed to the gear 50, the first contact surface 62a of the stopper 62 rotates to the same position as the reference surface of the gear 50. However, in this embodiment, the stopper ring 60 is attached to the spring 61. It is provided so as to be rotatable relative to the gear 50 in a biased state. Therefore, when the stopper 62 and the lock lever 40 abut, the retracting mechanism of the stopper ring 60 functions, and the stopper ring 60 abuts the lock lever 40 (the lower end portion of the second abutment surface 62b of the stopper 62). And the upper end of the second surface 43b of the lock lever 40), the gear 50 continues to rotate by the driving force of the motor.

  FIG. 10 shows a state in which the rack 30 is further raised from the state shown in FIG. 8, and the locking boss 32 starts to contact the second inclined portion 44c beyond the contact portion with the bank portion 44b of the lock lever 40. Show. In this state, the lock lever 40 rotates in a direction away from the gear 50 by the biasing force of the spring 42 while maintaining the contact state between the second inclined portion 44 c and the locking boss 32. Thereby, the interference between the lower end portion of the second contact surface 62b of the stopper 62 and the upper end portion of the second surface 43b of the lock lever 40 is released. For this reason, the stopper ring 60 is rotated by the biasing force of the spring 61 to a position where the second contact surface 62b and the reference surface of the gear 50 coincide with each other, and the stopper 62 rotates the lock lever 40 toward the gear 50 side. It moves to the position to be regulated (position where the second contact surface 62b of the stopper 62 and the second surface 43b of the lock lever 40 contact (surface contact)).

  Thereafter, the gear 30 is further rotated by the driving force of the motor, so that the rack 30 is arranged at the predetermined standby position shown in FIG.

  When an external force in the direction of lowering the rack 30 is applied to the accessory 16 or the rack 30 in a state where the rack 30 is disposed at a predetermined standby position, the gear 50 is applied to the lock lever 40 via the locking boss 32. A force in the direction of rotating to the side acts. However, in this state, since the second surface 43b of the lock lever 40 is in contact with the second contact surface 62b of the stopper 62, the rotation of the lock lever 40 is inhibited.

  Further, when an external force in the direction of lowering the rack 30 is applied to the accessory 16 or the rack 30, the stopper ring 60 and the first abutment surface 62a of the stopper 62 are connected to the gear 50 through the gears 55 to 51. A force in a direction away from the first surface 43a of 40 acts. At this time, when the stopper ring 60 rotates and the contact between the stopper 62 and the lock lever 40 is released, the lock lever 40 becomes rotatable to the gear 50 side and the locking of the locking boss 32 is released. However, in this embodiment, since the second contact surface 62b of the stopper 62 is strongly pressed against the second surface 43b of the lock lever 40, a frictional force is generated between the second contact surface 62b and the second surface 43b. Occurs and the stopper ring 60 does not rotate.

  Therefore, even if an external force in the direction of lowering the rack 30 is applied to the accessory 16 or the rack 30, the engagement boss 32 is locked by the lock lever 40, so that the accessory 16 and the rack 30 are not lowered.

  When the accessory is lowered by driving the motor, the second surface 43b of the lock lever 40 is centered on the rotation shaft (rotation center) of the gear 50 and the stopper ring 60 at the contact position with the stopper 62. Therefore, slipping occurs between the second contact surface 62b of the stopper 62 and the second surface 43b of the lock lever 40 by the driving force of the motor, and the stopper ring 60 is easily rotated. be able to.

  Further, after the gear 50 starts to rotate by the driving force from the motor, the rotational driving force of the gear 50 is transmitted to the tooth surface 31 of the rack 30 via the gears 51 to 55, and the rack 30 is lowered by the driving force of the motor. Before starting, a time lag corresponding to the backlash between the gears occurs. For this reason, when the rack 30 is lowered from the standby position by the driving force of the motor, the lowering of the rack 30 can be started after the contact state between the stopper 62 and the lock lever 40 is released by the rotation of the gear 50. As a result, the rack 30 can be lowered smoothly.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be used for an accessory lifting device for moving an accessory up and down.

1 gaming machine 16 accessory 20 accessory lifting device 30 rack 31 tooth surface 32 locking boss (protrusion)
40 Lock lever 41 Rotating shaft 42 Spring (biasing member)
43a 1st surface 43b 2nd surface 44 Engagement part 44a 1st inclination part 44b Bank part 44c 2nd inclination part 50 Gear (upper end gear)
51-54 gear (connection gear)
55 Gear (lower end gear)
60 Stopper ring 61 Spring (second biasing member)
62 Stopper 62a First contact surface 62b Second contact surface

Claims (5)

A rack to which the accessory is attached, and a plurality of gears arranged side by side along the moving direction of the rack and transmitting a driving force transmitted from a driving source to the rack. A lifting device that moves up and down,
A lock lever for locking the rack so as to prevent the rack from being lowered when the rack is disposed at a predetermined standby position;
A stopper that contacts the lock lever in a state of locking the rack and prevents the locking from being released by the weight of the rack or an external force acting on the rack ;
The rack includes a protrusion that contacts the lock lever,
The lock lever
A first inclined portion inclined in a direction away from the stopper from below to above;
A second inclined portion which is provided above the first inclined portion, and which is inclined in a direction approaching the stopper from below to above;
A bank connecting the upper end of the first inclined portion and the lower end of the second inclined portion;
A rotation shaft that rotatably supports the lock lever at a position above the second inclined portion of the lock lever;
A biasing member that biases the lock lever in a direction away from the stopper;
The lock lever
When the rack moves upward in a state in which the protruding portion is in contact with the first inclined portion, the rack rotates in a direction approaching the stopper, and the protruding portion moves further upward beyond the bank portion. An accessory lifting device that rotates in a direction away from the stopper by an urging force of the urging member and locks the rack by pressing the second inclined portion against the protruding portion . A stopper ring that is rotated by the driving force together with one of the plurality of gears;
The stopper is disposed so as to protrude radially outward from the outer peripheral surface of the stopper ring, and the first contact surface along the radial direction of the stopper ring and the circumferential direction of the stopper ring. A second abutment surface,
The lock lever includes a first surface that contacts the first contact surface and a second surface that contacts the second contact surface,
When the force that rotates the lock lever in a direction approaching the stopper is applied to the lock lever by the weight of the rack or an external force acting on the rack, the second surface comes into contact with the second contact surface. Thus, the accessory lifting / lowering device according to claim 1 , wherein rotation of the lock lever is restricted. The rack includes a tooth surface that meshes with a lower end gear that is a lowermost gear among the plurality of gears, and gears other than the lower end gear among the plurality of gears are separated from the tooth surface,
The driving force is sequentially transmitted from the upper end gear, which is the uppermost gear among the plurality of gears, to the lower gear.
The stopper ring is rotationally driven by the driving force together with the upper end gear,
The accessory lifting / lowering apparatus according to claim 2 , wherein the stopper is released from contact with the lock lever when the stopper ring is rotationally driven by the driving force. 4. The accessory lifting / lowering apparatus according to claim 2 , wherein the second surface has an arc shape centering on a rotation axis of the stopper ring. 5. A second biasing member that applies a biasing force in a direction in which the first surface is pressed against the first contact surface with respect to the stopper ring;
The stopper ring is rotatable relative to the gear rotating together with the stopper ring when a force in a direction opposite to the biasing force of the second biasing member is applied.
In a state where the protruding portion is in contact with the bank portion, the lower end portion of the second contact surface of the stopper interferes with the upper end portion of the second surface of the lock lever, and the second surface and the second abutment surface and is not in surface contact, according to claim 2 in which the protruding portion is characterized in that the said second surface and said second abutment surface is in surface contact when in contact with the second inclined portion The accessory lifting / lowering apparatus according to any one of claims 1 to 4 .

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