JPS6117673B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reciprocating drive for a moving object, such as a scanning carrier with a reading or recording head in a facsimile machine or a recording head in a printer.

A device such as a facsimile machine has a scanning carrier equipped with a reading or recording head, etc., and this scanning carrier is moved, for example, in the main scanning direction orthogonal to the sub-scanning direction, which is the direction of movement of the original or recording paper. to read or record images. As a drive means for moving the scanning carrier, for example, the scanning carrier is connected to a drive motor such as a pulse motor or a servo motor via a wire or a pulley, and the drive motor is rotated in forward and reverse directions to move the scanning carrier. A method has been proposed in which the scanning carrier is reciprocated in the main scanning direction, or a method in which the scanning carrier is reciprocated in parallel using rotational motion of an endless belt.

However, the former method requires complicated speed control of the motor when rotating the pulse motor, servo motor, etc. in forward and reverse directions. For example, when switching between forward and reverse rotation of the motor to make the scanning carrier reciprocate, in order to minimize the kinetic inertia of the scanning carrier, the brakes are gradually applied to the drive system to bring the carrier speed to zero. I am trying to make it move in the opposite direction depending on the state. Therefore, speed control is complicated, and the use of expensive servo motors increases the cost of the device drive system, and it is difficult to increase the scanning speed. In the latter belt system, the speed of the scanning carrier gradually decreases at both ends of the endless belt, making it difficult to achieve a reduction in scanning time.

In view of the above points, the present invention provides an inexpensive reciprocating drive device for a moving object such as a scanning carrier, which does not require forward/reverse rotation of a motor or accompanying speed control, and is capable of high-speed reciprocating motion. The purpose is to provide.

The present invention will be explained below with reference to illustrated embodiments.
Note that in the following description, a facsimile device will be used for convenience.

FIG. 1 shows a reciprocating drive device for a movable body according to an embodiment of the present invention. In the figure, a scanning carrier 1 as a moving body is normally at a starting position indicated by the symbol S. Then, when the device starts operating, the carrier 1 moves forward to the terminal position indicated by symbol E, and once the carrier 1 stops at the terminal position,
will return from that position to the starting position. That is,
The carrier 1 reciprocates between a starting position and a terminal position at high speed for a predetermined distance.

As shown in FIG. 2, the scanning carrier 1 is equipped with, for example, a recording head 2 and a solid-state sensor (not shown) disposed inside the reading/scanning barrel 1a. The scanning carrier 1 is loosely inserted into two mutually parallel guide shafts 3, 4 whose ends are supported by suitable support means. The scanning carrier 1 is capable of reciprocating in the main scanning direction perpendicular to the direction of movement of the original O by the guiding action of the guide shafts 3 and 4. When the carrier 1 moves forward from the starting position shown by the solid line to the ending position shown by the imaginary line, the image of the document O is read by the solid-state sensor described above.

In FIG. 1, an annular belt 5 as an annular body for driving the scanning carrier is disposed at the front side of the scanning carrier 1, and an engaging portion, that is, as shown in the figure, is provided on the inner peripheral surface of this belt. The teeth are formed at a constant pitch. The annular belt 5 is stretched between both pulleys 7 and 8 having teeth formed on their circumferential surfaces, and the direction in which the belt is stretched is parallel to the direction in which the carrier 1 moves. One of the above two pulleys 7
is fixed to a motor shaft 6a of a drive motor 6 that constitutes a drive source for the belt 5, as shown in FIG. Note that, as the drive motor, for example, a general single-phase AC motor is used.

On both sides of the scanning carrier 1, there are backing plates 1c, 1.
d is fixed, and one end of an extensible spring 9 is pressed against one backing plate 1c, and in this state, the spring 9 is in a compressed state. The carrier 1 is given the habit of moving from the starting position to the final position by the elasticity of the spring 9, but this movement is caused by the locking lever 12 connected to the starting solenoid 11. It is blocked.

3 and 4, a first engagement member 14 and a second engagement member 15 are attached to a support plate 1b (see FIG. 2) screwed to the main body of the carrier 1, respectively. That is, the first and second
The engaging and disengaging members 14 and 15 are pivotally connected to shafts 16 and 17, respectively, which are fixed to the support plate 1b. A locking pawl 14a is formed at one end of the first locking/disengaging member 14, and a locking pawl 14a is formed on the teeth of the annular belt 5, and a pin 14b fixed to the other end of the member 14 is provided with a switching lever. 18 is pivotally mounted.

Pin 1 implanted at the end of one arm of the switching lever 18
8a is in pressure contact with the lower edge 21a of the stopper member 21 fixedly arranged at the position shown in the figure, and in this state, the elastic spring 22 connected to the other arm end of the lever 18 and the shaft 16 is It is in an expanded position. A pin 15b is fixed to the other end of the second locking/disengaging member 15 having a locking pawl 15a at one end, and a switching lever 19 having a pin 19a implanted at one arm end of the pin 15b is fixed. is pivotally mounted, and the same lever 19
is held in the position shown in the figure by the elasticity of a tight spring 23 connected to the other arm end of the lever and the shaft 17. Note that the pin 1 of the second engagement/disengagement member 15
5b is normally in contact with the lower edge 24b of the guide member 24, which is fixedly arranged at the position shown in the figure.

Bent arms 14c and 15c formed on the first and second engagement and disengagement members 14 and 15, respectively, have pins 14.
d, 15d are fixed respectively, both pins 14d,
15d is in contact with the base sides of the bent free ends of leaf springs 28 and 29 whose base ends are fixed to the carrier body. first and second engaging/disengaging members 14,
15 are linked together by a connecting rod 31, and a long hole 31a bored at one end of the connecting rod 31 has a riveted shaft fixed to the first engaging/disengaging member 14. 14e is fitted, and this riveted shaft 14e is normally in the position shown in the figure. In addition, in FIG. 4, the symbol 1f
1 is a support piece for a belt guide that is fixed to the carrier 1 and moves in contact with the outer peripheral surface of the belt.

Next, the operation of the device of the present invention will be described. 1st
In the figure, the scanning carrier 1 is in a starting position indicated by the symbol S, and in this position, the elasticity of the spring 9 gives it the tendency to move toward the final position. Since the carrier 1 is thus locked, it is held in the position shown in the figure. When an operation button (not shown) of the drive device is pressed down, the starting solenoid 11 is energized and the drive motor 6 (see FIG. 2) starts rotating in the direction of the arrow.

Then, the annular belt 5 starts rotating in the direction of the arrow. Here, one side of the linear portion of the annular belt 5 excluding both ends, that is, the belt portion on the upper side is indicated by the reference numeral 5a, and this portion will be referred to as the upper belt portion. Further, the other side of the linear portion of the annular belt 5 excluding both ends, that is, the belt portion on the lower side is indicated by the reference numeral 5b, and this portion will be referred to as the lower belt portion. Here, as described above, the drive motor 6
starts rotating in the direction of the arrow, the annular belt 5 rotates in the direction of the arrow at high speed. Therefore, the upper belt portion 5a moves at high speed in the forward movement direction of the carrier 1,
Further, the lower belt portion 5b moves at high speed in a backward movement direction that is opposite to the forward movement direction.

Now, returning to the original explanation, starting solenoid 1
1 is energized, the locking lever 12 engages the shaft 12a.
to release the scanning carrier 1. Then, as shown in FIG. 4, the carrier 1 is pushed and moved by the elasticity of the spring 9, which has been in a compressed state until now, and it begins to move from the starting position to the final position.

As the carrier 1 starts reciprocating from the starting position, a spring 2 is attached to the lower edge 21a of the stopper member 21.
The switching lever 1 was pressed by the elasticity of 2.
The pin 18a of No. 8 slides on the lower edge 21a,
It comes into contact with the hook-shaped portion 21b of the stopper member 21.
When the carrier 1 moves further forward from this state, the pin 18a of the switching lever 18 is prevented from moving by the hook-shaped portion 21b as shown in FIG. Since the member 14 moves integrally with the carrier 1, the member 14 rotates counterclockwise about the axis 16 from the position shown in FIG.

That is, the pin 18a remains held in the position shown in FIG. From, switching lever 18
rotates the locking/disengaging member 14 counterclockwise around the shaft 16 while relatively rotating clockwise around the pin 14b. In other words, while the pin 14b is displaced in the direction of the arrow, the switching lever 18
4b in a clockwise direction.

The first engaging/disengaging member 14 is moved to the fourth position by the above-mentioned action.
During counterclockwise rotation from the figure to the position shown in FIG. 5, pin 14d is deflecting the free end bend of leaf spring 28. FIG. 5 shows a state in which the pin 14d has climbed over the peak of the free end bent portion, and from this state, the engagement/disengagement member 14 is further rebounded by the relatively strong elasticity of the leaf spring 28. When the member 14 continues to rotate clockwise and is rotated to the position shown in FIG. 6, the locking pawl 14a engages with the teeth of the upper belt portion 5a. At this position, the engaging/disengaging member 14 is click-stopped by the leaf spring 28, and at the same time, the pin 18a of the switching lever 18 is displaced to the position shown in FIG.

On the other hand, while the first engaging/disengaging member 14 rotates from the position shown in FIG. 4 to the position shown in FIG. 5 to the position shown in FIG.
The four riveting shafts 14e are guided by the elongated holes 31a of the connecting rods 31 and are displaced to the positions shown in FIGS. 4 to 6. That is, the first engaging/disengaging member 14 and the second engaging/disengaging member 15
Although it is connected by a connecting rod 31, the second engaging/disengaging member 15 remains held in the position shown in the figure, regardless of the above-mentioned rotational movement of the first engaging/disengaging member 14.

In FIG. 6, the locking claw 1 of the first locking/disengaging member 14
4a engages with the teeth of the upper belt part 5a, the scanning carrier 1 is now moved forward in the direction of the arrow by the drive feed action of the annular belt 5.
In other words, the carrier 1 is assisted in the reciprocating direction by the elasticity of the spring 9 from the time the carrier 1 starts moving from the starting position until the locking pawl 14a engages with the belt teeth. This spring 9 also achieves a buffering function when the carrier 1 returns. Note that this will be described later.

Here, in FIG. 6, at the same time that the locking pawl 14a of the first locking/disengaging member 14 engages with the belt teeth, power is transmitted from the annular belt 5 to the carrier 1, and the carrier 1 performs forward movement. continue. Then, when the carrier 1 moves further in the direction of the arrow from the position shown in FIG. 6, the backing plate 1c of the carrier 1 moves away from the end of the spring 9, and in this state, the spring 9 is fully expanded. . During this time, the pin 15b of the second engaging/disengaging member 15 moves while contacting the lower edge 24b of the guide member 24, and moves away from the lower edge 24b. Note that when the pin 15b leaves the lower edge 24b of the guide member 24, the second locking/disengaging member 15 locks the shaft 17 due to the locking action of the riveted shaft 14e.
Since the locking pawl 15a cannot rotate counterclockwise around the lower belt portion 5b, it is impossible for the locking pawl 15a to engage with the lower belt portion 5b. In other words, it is impossible for both the locking pawls 14a and 15a to engage with the belt teeth, and the connecting rod 3
1 achieves a kind of mechanical safety function.

When the carrier 1 continues to move and reaches the position shown in FIG. It hits the guide part 25a. Then, as the carrier 1 continues to move forward, the pin 14b slides on the inclined guide portion 25a, as shown in FIG.
4 is forcibly rotated clockwise around the shaft 16, and as a result, the locking pawl 14 of the first locking/disengaging member 14
a separates from the teeth of the upper belt portion 5a.

During this time, the pin 14d of the first engaging/disengaging member 14 is bending the bent portion of the free end of the leaf spring 28. When the carrier 1 moves further forward in the direction of the arrow from the eighth position, the pin 14b of the first engaging/disengaging member 14
The pin 14 rides on the upper edge 25b of the guide member 25, and in this state, the clockwise rotation of the first engaging/disengaging member 14 is completed, and the pin 14b slides on the upper edge 25b as shown in FIG. reach the position. During this time,
The pin 14d of the first engaging/disengaging member 14 reaches the position shown in FIG. 9 while bending the bent portion of the free end of the leaf spring 28.

In this state, the first engaging/disengaging member 14 is held in the position shown in the figure. On the other hand, while the carrier 1 reaches the terminal position E shown in FIG. 8 to FIG.
While hitting c and sliding on this part,
It climbs over the hook-shaped portion 26b and falls onto the upper edge 26a of the stopper member 26, as shown in FIG. That is, the switching lever 19 rotates counterclockwise around the pin 15b against the force of the spring 23 until the pin 19a rides over the hook-shaped portion 26b, and the pin 19a rides over the hook-shaped portion 26b. Thereafter, the force of the spring 23 causes it to rotate clockwise.

By the way, the carrier 1 is transported at a relatively high speed by the annular belt 5, and the
As shown in the figure, the locking claw 14 of the first locking/disengaging member 14
When a is disengaged from the belt teeth, the scanning carrier 1 continues to move forward in the direction of the arrow due to the movement inertia regardless of this. During this time, the backing plate 1d that comes into contact with the end of the spring 10 gradually compresses the spring 10. Then, the carrier 1 reaches the terminal position E shown in FIG. 9 and once stops. In addition,
In this case, the carrier 1 stops in a state where its kinetic inertia energy and the energy due to the elasticity of the spring 10 are balanced with each other.

Next, once at the terminal position E shown in FIG.
The stopped scanning carrier 1 is pushed and moved by the elasticity of the spring 10 and starts to move back from the terminal position to the starting position. Along with this backward movement, the pin 1 of the switching lever 19, which was in pressure contact with the upper edge 26a of the stopper member 26 by the elasticity of the spring 23,
9a slides on the upper side edge 26a and abuts on the hook-shaped portion 26b of the stopper member 26. When the carrier 1 moves back further from this state, the pin 19a of the switching lever 19 is prevented from moving by the hook-shaped portion 26b as shown in FIG. Since the member 15 moves integrally with the carrier 1, the member 15 is attached to the shaft 17.
from the position shown in FIG. 9 in a counterclockwise direction.

That is, the pin 19 remains held in the position shown in FIG. , the switching lever 19 is
The engaging/disengaging member 15 is rotated counterclockwise around the shaft 17 while relatively rotating clockwise around the pin 15b. In other words, while the pin 15b is displaced in the direction of the arrow, the switching lever 19
It rotates clockwise around the .

The second engaging/disengaging member 15 is moved to the ninth position by the above-mentioned action.
During the counterclockwise rotation from the figure to the position shown in FIG. 10, the pin 15d is deflecting the free end bend of the leaf spring 29. Figure 10 shows the above pin 15.
d shows a state in which the free end bends over the peak, and from this state, the engagement member 15 is further rotated counterclockwise by the relatively strong elasticity of the leaf spring 29. When the member 15 is rotated to the position shown in FIG. 11, the locking pawl 15a engages with the teeth of the lower belt portion 5b. At this position, the locking/disengaging member 15 is click-stopped by the leaf spring 29, and at the same time, the pin 1 of the switching lever 19
9a is displaced to the position shown in FIG.

On the other hand, while the second engaging/disengaging member 15 rotates from the position shown in FIG. 9 to the position shown in FIG. 10 to the position shown in FIG. Descend to the position shown. That is, although the first engagement and disengagement member 14 and the second engagement and disengagement member 15 are connected by the connecting rod 31, the first engagement and disengagement member 14 remains in the position shown.

In FIG. 11, at the same time that the locking pawl 15a of the second locking/disengaging member 15 engages with the teeth of the lower belt portion 5b, the scanning carrier 1 is moved to the annular belt 5.
It is caused to move back in the direction of the arrow by the drive feed action of. In other words, from when the carrier 1 starts moving from the end position until the locking pawl 15a engages with the belt teeth, the carrier 1 is assisted in the backward movement direction by the elasticity of the spring 10. . and,
This spring 10 also achieves a damping function at the end of the forward movement of the carrier 1.

Here, in FIG. 11, at the same time that the locking pawl 15a of the second locking/disengaging member 15 engages with the belt teeth,
Power is transmitted from the annular belt 5 to the carrier 1, and the carrier 1 continues its backward motion. When the carrier 1 further moves in the direction of the arrow from the position shown in FIG.
It moves away from the end of the spring 10, and in this state the spring 10 is in a fully extended state. During this time, the pin 14b of the first engaging/disengaging member 14 is inserted into the guide member 25.
The upper edge 25b moves while touching the upper edge 25b.
move away from b.

When the carrier 1 continues to move and reaches the position shown in FIG. 12, that is, the right side position of the device, the pin 15b of the second engagement/disengagement member 15 comes into contact with the inclined guide portion 24a of the guide member 24. Then, when the carrier 1 continues to move backward, the pin 15b slides on the inclined guide portion 24a, and at the same time, the second engagement member 1
5 is forcibly rotated clockwise around the shaft 17, and as a result, the locking pawl 1 of the second locking/disengaging member 15
5a separates from the toothed portion of the lower belt portion 5b.

After the locking pawl 15a is disengaged from the teeth of the lower belt portion 5b, the carrier 1 continues its backward motion due to its movement inertia, compressing the spring 9 and moving to the starting position shown in FIG. leading to. Further, while the carrier 1 is moving from the position shown in FIG. 12 to the starting position shown in FIG. It comes into contact with the edge 21a, and while sliding on this portion, it climbs over the hook-shaped portion 21b and reaches the position shown in FIG. 4. Further, the pin 15b of the second engaging/disengaging member 15 moves from the inclined guide portion 24a of the guide member 24 to the lower edge 24b, and reaches the position shown in FIG. 4 while sliding on this portion.

Note that the carrier 1 once stops at the starting position shown in FIG. 4 in a state where its kinetic inertia energy and the energy due to the elasticity of the spring 9 are balanced with each other, and thereafter the above-described operation is repeated. Then, the forward motion from the starting position to the final position is started again. In this way, the reciprocating motion of the scanning carrier 1 is repeatedly performed, but in order to stop the scanning carrier 1, the starting solenoid 11 (the (see figure 1) is released from its excitation state, and the locking lever 1 is released.
2 locks the carrier 1. In the embodiment of the present invention, the moving speed of the carrier 1 when moving forward and the moving speed when moving backward are equal because one belt is used.

As described above, in the embodiment of the present invention, the annular belt 5 that rotates in only one direction is used, and the upper belt part 5a and the lower belt part 5b, which travel in different directions, have first and second belts on their teeth, respectively. Since the locking pawls 14a and 15a of the two locking and disengaging members 14 and 15 are skillfully engaged to allow the scanning carrier 1 to reciprocate, there is no need to rotate the drive motor in forward and reverse directions. Therefore, a general inexpensive AC motor can be used, and the moving speed of the carrier 1 does not gradually decrease at the start and end positions, and the time required for the reciprocating movement of the carrier 1 is extremely long. It can be shortened.

Furthermore, a characteristic feature of the embodiment of the present invention is that, by the action of the springs 9 and 10, a buffering function can be achieved when the scanning carrier 1 returns to the initial and final positions, and an auxiliary The advantage is that it can also perform a feeding function. Therefore, there is an advantage that the mechanical configuration is extremely simplified. Furthermore, in the embodiment of the present invention, the reciprocating motion of the carrier can be performed by using only one annular belt, so that the mechanical configuration is extremely simple.

By the way, in the above embodiment, the annular belt 5 having teeth formed only on the inside is used, and the teeth are provided with the first
and the locking claws 14a of the second locking/disengaging members 14, 15,
In addition, as shown in FIGS. 13 and 14, an annular belt 40 having teeth formed on both the inner and outer peripheral surfaces is used to engage the first and 2 engaging/disengaging members 41, 42
The locking claws 41a and 42a may be engaged with the teeth on the outside of the annular belt 40. The operation of this embodiment is basically the same as that of the previous embodiment, so the explanation thereof will be omitted here. In each of the above embodiments, a belt is used in which teeth are formed on both the inner and outer circumferential surfaces or on one of the inner and outer circumferential surfaces, but a chain or the like may be used instead of this belt. good.

As described above, according to the present invention, various effects as described below are achieved. First, in the prior art, relatively expensive pulse motors, servo motors, etc. are used and the scanning carrier is reciprocated by rotating these motors in forward and reverse directions, but in the device of the present invention, Since it is only necessary to rotate the drive motor in one direction, a very common inexpensive AC motor or the like can be used. Further, when a pulse motor or a servo motor is used, complicated speed control of the motor is required to rotate these motors in forward and reverse directions. The device of the present invention does not require any such speed control function. Further, various reciprocating drive devices for moving bodies of this type using electromagnetic clutches have been proposed, but the device of the present invention does not require such an electromagnetic clutch. From this point of view, the present invention has the effect of reducing the cost of the device.

Next, the second effect of the present invention is that the moving speed of a moving body such as a scanning carrier does not gradually decrease at the starting position and the terminal position, in other words, it performs high-speed uniform motion. The point is that the time required for one reciprocating movement of the moving body can be extremely shortened. Therefore, when the device of the present invention is applied to, for example, a facsimile device, it is possible to significantly shorten the scanning time for reading or recording scanning. Furthermore, the third effect of the present invention is that the reciprocating movement of the carrier can be performed by using only one annular body such as a belt or chain, which greatly simplifies the mechanical configuration, and the device Costs can be made lower.

Although the apparatus of the present invention has been described as a facsimile apparatus as an application example, it may also be applied to an electrophotographic copying machine in which the document table is reciprocated, or an electrophotographic copying machine or recording machine in which the optical system is reciprocated. It can also be applied to printers that move the head back and forth.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a reciprocating drive device for a movable body according to an embodiment of the present invention, and FIG. 2 is a perspective view of the device showing the relative positional relationship between a scanning carrier and an annular belt for driving the scanning carrier. , FIG. 3 is an exploded perspective view showing the manner in which the second engaging and disengaging member is attached to the support plate as shown in FIG. 1, and FIG. FIG. 5 is a front view showing the scanning carrier slightly moved forward from the starting position;
FIG. 6 is a front view showing the state in which the locking pawl of the first locking/disengaging member is engaged with the belt teeth, and FIG. 7 is a front view showing the state in which the scanning carrier has reached the terminal position and the locking pawl is detached from the belt teeth. Front view showing the state on the verge of
The drawings are a front view showing a state in which the locking pawl is separated from the belt teeth, FIG. 9 is a front view showing the scanning carrier once stopped at the terminal position, and FIG.
The figure is a front view showing the state in which the scanning carrier moves back slightly from the terminal position and the pin of the switching lever touches the hook-shaped part of the stopper member. In Figure 11, the locking pawl of the second locking/disengaging member is connected to the belt tooth. FIG. 12 is a front view showing the state in which the scanning carrier has reached the starting position and the locking pawl is about to separate from the belt teeth, and FIG. A schematic configuration diagram of a reciprocating drive device for a movable body according to another embodiment, and FIG. 14 is a detailed diagram of the reciprocating drive device according to the above-mentioned another embodiment. DESCRIPTION OF SYMBOLS 1... Moving body, 5, 40... Annular body for driving a moving body, 6... Drive source, 9, 10... Spring as auxiliary feeding means, 14, 41... First engaging/disengaging member, 1
5, 42...Second engaging/disengaging member, 21...First stopper member, 26...Second stopper member, 25...
...first guide member, 24...second guide member, 28...first leaf spring, 29...second leaf spring.

Claims (1)

[Claims] 1. A predetermined stroke distance between the start position and the end position,
It has a movable body that reciprocates, and an engaging portion formed on at least one side of the inner and outer circumferential surfaces, and is stretched so that a straight portion excluding both ends is parallel to the moving direction of the movable body. an annular body for driving a movable body; the annular body is rotatably driven in one direction, one side of the linear portion of the annular body advances in the forward movement direction of the movable body, and the other side moves in the forward movement direction of the movable body; a driving source for moving the movable body in a backward movement direction; an auxiliary feeding means for moving the movable body by a predetermined amount from a starting and terminal position toward a terminal and starting position, respectively; a first engaging/disengaging member attached; a second engaging/disengaging member swingably attached to the movable body and linked to the first engaging/disengaging member via a connecting rod;
When the movable body moves a predetermined amount from the starting position by the auxiliary feeding means, the first
A first stopper member that engages an engagement/disengagement member with an engagement portion on one side of a linear portion of the annular body that advances in the forward direction, and moves the movable body forward; and a first stopper member that causes the movable body to move forward; a first guide member that rotates the first engaging/disengaging member from the engaging position to the releasing position; and a first guide member that is attached to the movable body and maintains the first engaging/disengaging member in the released position. When the movable body is moved by a predetermined amount from the end position by the leaf spring and the auxiliary feeding means, in conjunction with this movement, the second engaging/disengaging member is connected to the linear portion of the annular body that advances in the backward movement direction. A second stopper member that engages with the other side of the engagement portion to move the movable body backward, and a second stopper member that moves the second engagement and disengagement member from the engagement position to the release position until the movable body reaches the starting position. A reciprocating drive device for a movable body, comprising: a second guide member that rotates the movable body; and a second leaf spring that is attached to the movable body and holds the second engaging/disengaging member in a released position.