JP2001193340A - Rocking closing mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely perform operation to the rocking end of an arm by reducing the 'play' at the rocking end as much as possible while preventing the arm from being operated in the opposite direction. SOLUTION: A rocking control member 16 provided with a pair of disengaging pieces 16A and 16A is supported on a body case 1 so as to be rockable around a rocking support shaft 17. A rocking operation in the direction opposite to an arm 3 is prevented by bringing one disengaging piece 16A into contact with the many tooth bodies 15A of a gear-like member 15 provided in the arm 3 by providing a toggle spring 18 for energizing the rocking control member 16 in both rocking attitudes having a neutral attitude in-between. When the arm 3 have reached the rocking end, the operation piece 19 arranged in the gear-like member 15 is made to abut on the switch pin 20 of the rocking control member 16 to switch the attitude of the rocking control member 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main body having a rocking body which can be switched between an open position and a closed position by a rocking operation around an opening / closing axis. The present invention relates to a swing opening / closing mechanism including a ratchet mechanism for preventing an operation in a reverse direction in the middle of an operation area.

[0002]

2. Description of the Related Art As a ratchet mechanism configured as described above, the one shown in FIG. That is, the ratchet mechanism is configured such that the opening / closing axis X
And a gear-shaped member 15 provided on a rocking body 3 which is openably and closably supported around an opening / closing support shaft 2 having a coaxial core, and swinging about a swing shaft Y and a coaxial swing support shaft 17 with respect to the main body 1. The swing regulating member 16 includes a freely swingable regulating member 16 and a tension type spring 35 for applying a biasing force to the swing regulating member 16. The gear-shaped member 15 is provided with a large number of teeth 15A in an arc-shaped region centered on the opening / closing axis X, and the swing regulating member 16 is a single engagement / disengagement piece engaged / disengaged with the gear-shaped member 15. 16A
The spring 35 is provided so as to apply an urging force on the side where the tip of the engagement / disengagement piece 16A faces the opening / closing axis X. When the rocking body 3 is operated in the direction from the closed posture to the open posture, for example, the engagement / disengagement piece 16A comes into contact with the teeth 15A of the gear-like member 15 as shown in FIG. , The swing regulating member 1 in a direction allowing swing in this direction.
6 changes, and when trying to operate the rocking body 3 in the opposite direction, the engaging / disengaging piece 16A bites into the tooth body 15A, so that the operation of the rocking body 3 in the reverse direction can be prevented. I have.

[0003]

Considering the structure shown in the drawings as a prior art, this structure has a single ratchet mechanism, and even if it is operated from the closed position to the open position, the structure is open. Even when the operation is performed from the posture to the closed posture, the operation of the rocking body 3 in the reverse direction can be prevented. Further, in this structure, when the rocking body 3 is set to the open posture or the closed posture, the engagement / disengagement piece 16A of the vibration restraining member 16 is switched in the direction of the opening / closing axis X by the urging force of the spring 35. In this case, the teeth 15A of the gear-shaped member 15 corresponding to this area have been removed. However, when an area where the engagement piece 16A and the tooth body 15A do not contact each other is formed as described above, an area where the ratchet mechanism does not function when the oscillator 3 is set to the open posture or the closed posture is formed. That is, a so-called "asobi" was generated. Specifically, as shown in FIG. 8 (a), when the swing member 3 is operated in the open posture in the state where the swing body 3 is in the closed posture, the engagement / disengagement piece 16A becomes the tooth body 15A.
After reaching the swinging posture over one of the two (the rightmost toothed body 15A shown in the figure), the swinging in the reverse direction is prevented, and the engaging and disengaging piece 16A goes over the one toothed body 15A. Up to this point, the rocking body 3 can be freely rocked. The angle region in which the swinging operation can be freely performed in this way is “Asobi”, and in such a case where “Asobi” occurs in such a wide angle range, for example, the swinging body 3 is operated in the closing direction to operate the last tooth body 15A. After the disengagement piece 16A has passed over, the swinging body 3 can freely swing in this "asobi" area. Therefore, the effective range of the ratchet mechanism is narrower than the swinging range of the swinging body 3. And the operator moves the rocking body 3
May be erroneously swung in the opposite direction despite trying to stop in the range where the ratchet mechanism is working.

That is, although this ratchet mechanism is of a single type, it has a performance of preventing an operation in the opening direction or the closing direction in the opposite direction even if the operation is performed in the opening direction or the closing direction. When the operation is performed from the open position to the other side, the swing regulating member 16 is linked with the operation start.
Is set to a position that prevents operation in the reverse direction, and when the operation is performed up to the operation end, the swinging body 3
In order to allow the switching of the posture of the swing regulating member 16 when the is operated in the reverse direction, "asobi" of a wide angle range is necessarily formed at each operation end, so that there is room for improvement.

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the "asobi" at the swing end as much as possible while taking advantage of the effectiveness of using a single ratchet mechanism to prevent operation in the reverse direction. The point is that a mechanism for reliably performing the operation up to the end is rationally configured.

[0006]

A first feature (claim 1) of the present invention is that a main body is provided with a rocking body which can be switched between an open position and a closed position by a rocking operation around an opening / closing axis. A swinging opening / closing mechanism having a ratchet mechanism for preventing operation in the reverse direction in the middle of the operation range of the swinging body to the open posture or the closed posture, wherein the ratchet mechanism is the swinging body or the main body of the body. And a gear-shaped member provided with a number of teeth in an arc-shaped region centered on the opening / closing axis, and swingably supported around a swing axis in a posture parallel to the opening / closing axis. And a swing restricting member having a pair of engaging and disengaging pieces that can be engaged and disengaged from the teeth of the gear-shaped member, and any of the two swing end sides on the basis of the neutral position of the swing restricting member. It is possible to apply a biasing force in the direction,
The one corresponding to the swinging direction of the pair of engaging and disengaging pieces is swung to a position where it can be disengaged from the tooth body, and the swinging body is swung in a predetermined direction by the contact between the engaging and disengaging piece and the tooth body. Main biasing means for setting a state in which swinging in the opposite direction is prevented while allowing movement, and when the rocking body reaches the open position or the closed position, the biasing force of the main biasing means is reduced. A switching means for swinging the swing regulating member in the opposite swing end direction beyond the neutral position in opposition to the neutral posture is provided, and the operation and effect are as follows.

A second feature of the present invention (claim 2) is that, in claim 1, when the posture of the swing regulating member is switched by the switching means, the phenomenon that the engagement member is held in the neutral posture is avoided. The operation and effect are as follows.

A third feature of the present invention (claim 3) is that, in claim 2, the switching means restricts the swing by operating the operating piece that swings integrally with the swinging body and by contacting the operating piece. An operating piece for switching the posture of the member, and the avoidance means is provided with an operating piece in a state where the engaging member has reached a neutral position in a state where the operating piece and the operated piece are in contact with each other. It is configured to include an engagement structure that engages with the operated piece to operate integrally, and the operation and effect are as follows.

According to a fourth feature of the present invention (claim 4), in accordance with claim 2, the switching means includes an operating piece that rocks integrally with the rocking body, and a swing shaft center of the rocking control member. An operating member oscillatably supported by the oscillating member, switching urging means capable of urging the operating member in any direction on both oscillating ends with reference to the neutral position, and an oscillating body At the time of swinging, the operating member is swung to the position exceeding the neutral position by the operating force from the operating piece, and the operating force is transmitted from the operating member to the swing restricting member after the neutral position is exceeded. An interlocking switching mechanism for switching the attitude of the regulating member is provided, and the operation and effect thereof are as follows.

According to a fifth feature of the present invention, the biasing force of the switching biasing means is set to be stronger than the biasing force of the main biasing means. A contacted member formed on the operating member to switch the posture of the operating member upon contact with the actuator, and an operating member formed to contact and transmit the operating force of the operating member to the swing regulating member when the posture of the operating member is switched. And the interlocking switching mechanism constitutes the avoiding means. The operation and effect are as follows.

[Action]

According to the first feature, the swinging posture of the swing regulating member is determined in a toggle manner by the biasing force of the main biasing means, and the biasing force from the main biasing means acts in this manner. The engaging piece and the teeth of the gear-shaped member come into contact with each other to allow the swinging body to swing in a predetermined direction, while preventing the swinging body from swinging in the opposite direction. Alternatively, the switching means switches the posture of the swing restricting member when the opening posture is reached, so that the swing operation in the reverse direction is prevented until just before the switching to reach this posture. In other words, in this configuration, by providing a pair of engaging and disengaging pieces, the area where the teeth of the gear-like member do not contact the engaging and disengaging pieces can be made sufficiently small as in the structure shown in the related art, so This makes it possible to make the swinging body swing to the vicinity of the swinging end in a state where the swinging body can be made smaller and the operation in the opposite direction is prevented.

According to the second feature, since the swing regulating member is swingable to both swinging ends with the neutral posture interposed therebetween, the phenomenon in which the swing regulating member is held in the neutral posture by the urging force of the main urging means. Although it is supposed that the swinging means is provided, avoidance means is provided, so that the swing regulating means must be set to the posture on one side of both swinging ends to engage and disengage Can be brought into contact with each other.

According to the third feature, when the oscillating body is operated to the closed position or the open position, the operated member comes into contact with the operation piece, so that the force from the oscillating member is restricted by the oscillating member. And the attitude of the swing regulating member is switched, and at the time of this switching, the operating piece and the operated piece are engaged and integrally operated by the engaging structure constituting the avoiding means. Even when the swinging member is operated in the reverse direction while the swing regulating member has reached the neutral position, the swing regulating member is not left in the neutral position.

According to the fourth feature, when the swinging member is operated to the closed position or the open position, the operating member is swung to a position exceeding the neutral position by the operation force from the operating piece, and this swinging operation is performed. The posture of the swing regulating member is switched in cooperation with the movement. That is, according to this configuration, the posture of the swing regulating member is switched after the operating member exceeds the neutral posture, so that, for example, even if the operating member may be left in the neutral posture, the swing regulating member is The posture before operation is maintained, and the swing regulating member is not left in the neutral posture.

According to the fifth feature, the force from the operating piece is transmitted to the contacted member to swing the operating member, and the swinging power is transmitted to the swing regulating member by the contact of the pressing member. In addition, since the urging force of the switching urging means for determining the posture of the operating member is set to be stronger than the urging force of the main urging means, when the operating member swings to a posture exceeding the neutral posture, At that timing, the operating member swings to near the swing end by the biasing force from the switching biasing means, and at the same time, the posture of the swing regulating member is reliably switched by the force.

[Effects of the Invention] Therefore, while a single ratchet mechanism prevents operation in the opening and closing directions, the operation in the opposite direction is prevented, but the "sound" at the swinging end is sufficiently reduced. The mechanism for reducing the size of the rocking body and reliably performing the operation up to the rocking end was rationally configured.
Further, regardless of whether the ratchet mechanism causes one of the pair of engagement pieces to function by swinging beyond the neutral position, one of the engagement and disengagement pieces can always be set at a position where it can be disengaged. It is possible to easily manufacture a product that always sets the mating piece at a position where it can be disengaged, and switches the posture of the swing regulating member that swings in a toggle manner based on a change in the posture of the operating member that swings in a toggle manner. By adopting the structure, even though the ratchet mechanism has a pair of engaging pieces, one of the engaging pieces can always be set at a position where it can be disengaged. It was gained.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] A first embodiment of the present invention will be described below with reference to the drawings. FIG.
As shown in FIG. 2, the opening posture indicated by “open” and the closed posture indicated by “closed” around the opening / closing axis X and the opening / closing support shaft 2 arranged coaxially with the main body case 1 in a lateral position with respect to the main body case 1. The medicine replenishing device is provided with an arm 3 as a swinging body so as to be swingable. This medicine replenishing apparatus includes a tray 4 which is detachable from the main body case 1 in a state where the arm 3 is in the open position "open". The tray 4 has a handle 4A on the front surface of a storage space for storing the replenishment container 5. Body case 1
A liquid level sensor 6 and a bellows-type suction mechanism 7 for applying a negative pressure to a space in the liquid level sensor 6 are provided at a rear position of the liquid level sensor 6. It is linked with the rear end of the arm so as to apply a negative pressure to the space inside the surface sensor 6. A suction tube 8 having a sharp tip is formed on the lower surface of the arm 3 so as to protrude therefrom. A suction tube 9 having one end communicating with the suction tube 8 is provided along the arm 3. Is led to the liquid level sensor 6.

A lock arm 10 is provided on the lower surface of the arm 3.
A lock mechanism A is provided on the frame portion of the main body case 1 at a position facing the lock mechanism A so as to engage with the lock arm 10, and the lock arm is unlocked on the front end side of the arm 3. It has a rod 11 in a posture parallel to the opening / closing axis X for operation to the side, and an electric switch 12 for enabling operation of the rod 11. In addition, on the upper surface at the distal end position of the arm 3, there is formed a portion whose center in the width direction is concave, and the rod 11 is arranged to be exposed to this portion. Furthermore, in this medicine replenishing device,
When the arm 3 is operated from the open position "open" to the closed position "closed", the operation in the reverse direction is prevented halfway, and the arm 3 is securely operated to the closed position "closed". When the operation is changed from the posture “closed” to the open posture “open”, the operation in the opposite direction is prevented, and the tip of the suction pipe 8 is
And a ratchet mechanism B for reliably operating the arm 3 to a sufficient height that does not make contact with the arm 3 (up to the open position “open”).

As shown in FIGS. 3 and 4, the ratchet mechanism B is mounted on the side surface of the arm 3 with a large number of teeth 15A positioned in an arc-shaped region centered on the opening / closing axis X. A gear-shaped member 15, a swing regulating member 16 integrally formed with a pair of upper and lower engaging and disengaging pieces 16A, 16A which are engaged with and disengaged from the teeth 15A of the gear-shaped member 15, and are formed in the swing regulating member 16. Of the swing regulating member 1 through the elongated hole 16B.
A swing support shaft 17 arranged coaxially with the swing shaft Y to support the gear 6 so as to be able to approach and separate from the gear-like member 15, and the swing restricting member 16 sandwiching the neutral posture. A crane-shaped toggle spring 18 (an example of a main biasing unit) that biases in both swinging directions and biases the swing regulating member 16 toward the gear-shaped member 15, and a tooth body of the gear-shaped member 15. It is provided with a pair of upper and lower plate-like operation pieces 19 provided on both ends of a region where 15A is formed, and a switch pin 20 formed on the swing regulating member 16 as an operated piece. . Also, a pair of operation pieces 19, 19 and a switch pin 20
And the toggle spring 18 constitute a switching means C for switching the posture of the swing regulating member 16.
The recess 19 </ b> B and the switch pin 20, which are formed in the recess 19, constitute an avoiding means D for avoiding a phenomenon in which the swing regulating member 16 is held in the neutral position. Note that the neutral position of the swing regulating member 16 means that the toggle spring 18
The point at which the urging force acts on the neutral straight line NL.

With this configuration, when the arm 3 is operated from the closed posture “closed” to the open posture “open”,
As shown in FIG. 3, the urging force of the toggle spring 18 allows the lower engagement / disengagement piece 16A to swing in the opening direction of the arm 3 in a state in which the lower engagement piece 16A comes into contact with the tooth body 15A of the gear-shaped member 15, and the arm 3 is turned upside down. In the case of operating in the direction (closing direction), the engagement / disengagement piece 16A bites into the teeth 15A of the gear-shaped member 15 to prevent swinging in the opposite direction. As shown in FIG. 4A, when the arm 3 reaches a position near the end of the open position “open” by this swinging operation, the switch pin 20 comes into contact with the cam surface 19A of the upper operation piece 19. After displacing the swing regulating member 16 in a direction away from the gear-shaped member 15 (the elongated hole 16B allows this movement), the switch pin 20 is fitted into the concave portion 19B formed on the cam surface 19A of the operation piece 19. It reaches a state of moving integrally with the biasing force of the set toggle spring 18. Even when the operation in this direction is continued and the arm 3 is operated in the opposite direction at the timing when the swing regulating member 16 reaches the neutral position, the switch pin 20 is fitted into the recess 19B as described above. Since the switch pin 20 moves integrally with the concave portion 19B, the swing restricting member 16 is not left in the neutral position, and the respective engaging and disengaging pieces 16A are separated from the teeth 15A of the gear-shaped member 15. The ratchet mechanism B does not lose its function.

More specifically, the cross-sectional shape of the switch pin 20 is circular, and the shape of the concave portion 19B is formed by a notch having the same diameter as the switch pin 20 and having a semicircular shape. When the neutral position is reached, that is, the switch pin 20 is placed on a neutral straight line (NL) connecting the point of action of the anti-reverse rotation preventing member of the toggle spring 18 and the pivot axis Y.
When the center of the switch pin 20 is reached, the shape of the concave portion 19B is set so that the inner peripheral surface of the concave portion 19B is located at a point where the surface on the opening / closing axis X side of the switch pin 20 intersects the neutral straight line (NL). By setting, the switch pin 20 is kept pressed against the inner peripheral surface of the concave portion 19B by the urging force of the toggle spring 18, and the switch pin 20 and the operation piece 19 are integrally operated to restrict the swing. The inconvenience of the member 16 being left behind in the neutral position is avoided.

When the operation is further continued in a state where the swing regulating member 16 has reached the neutral position as shown in FIG. 4B when the swing regulating member 16 exceeds the neutral position (N). As described above, the biasing force of the toggle spring 18 separates the switch pin 20 from the concave portion 19B of the operation piece 19, and the swing restricting member 16 assumes the opposite swinging posture in FIG.
6A comes into contact with the teeth 15A. Conversely, when the arm 3 is operated in the closing posture "closed" after the arm 3 reaches the opening posture "open", the upper engaging / disengaging piece 16A is actuated by the biasing force of the toggle spring 18. The arm 3 contacts the tooth body 15A of the gear-shaped member 15 and
Swing in the closing direction, and when the arm 3 is to be operated in the reverse direction (opening direction), the engaging piece 16A
Are engaged with the teeth 15A of the gear-shaped member 15 to prevent the gear-shaped member 15 from swinging in the opposite direction. When the arm 3 reaches near the end of the closed position "closed" by this swing operation, the switch pin 20 comes into contact with the cam surface 19A of the lower operation piece 19 to move the swing regulating member 16 to the gear-shaped member. After being displaced in the direction away from 15 (the long hole 16B allows this movement), the switch pin 20 is fitted into the concave portion 19B formed on the cam surface 19A of the operation piece 19 and integrally formed by the biasing force of the toggle spring 18. To avoid the phenomenon that the swing regulating member 16 is left behind in the neutral posture as described above.

Therefore, the processing liquid filled in the bag-shaped replenishing container 5 made of a flexible sheet material such as a resin material or a water-resistant paper material is stored in the storage space of the tray 4 and the main body case 1 is stored therein. And the arm 3 is operated in the direction of the closed position “closed”, whereby the arm 3 is reliably operated to the closed position “closed” while the operation in the opposite direction is prevented, and the lock mechanism A The arm 3 is maintained in the closed posture “closed”. Further, by setting the closed posture to “closed” in this manner, the suction tube 8 is pierced into the replenishing container 5, and the processing solution in the replenishing container 5 is supplied to the suction tube 9 through the small-diameter suction hole formed at the tip. The liquid is sucked to the position of the liquid level sensor 6 and a predetermined level of the liquid level is set inside the liquid level sensor 6.
Then, the liquid level sensor 6 sucks and sends it to a developing device for developing an image printed on photographic paper or an automatic developing device for photographic film by a pump or the like (not shown). It is intended to do. When the processing liquid is consumed by the suction, the replenishing container 5 contracts due to the atmospheric pressure, and the internal processing liquid can be sent out without any excess. 6 is used to detect that the liquid level in the cartridge 6 has decreased and the treatment liquid in the medicine replenishing device has been consumed.
Is operated in the opening posture "open" direction, the rod 11 is pulled (operated to the right in FIG. 2) while the electric switch 12 is pressed, so that the lock arm 10 of the lock mechanism A is unlocked in the unlocking direction. As a result, the locked state is released and the opening operation is enabled (the structure for allowing the sliding operation of the lock arm 10 in conjunction with the electric switch 12 is not described in detail).

[Second Embodiment] Hereinafter, a second embodiment of the present invention will be described.
An embodiment will be described with reference to the drawings. In the second embodiment, the basic structure of the medicine replenishing apparatus does not change, and the structure of the ratchet mechanism B is different. The structure will be described in detail below (the first embodiment). Those having the same functions as those of the embodiment are denoted by the same reference numerals and symbols as in the first embodiment).

As shown in FIGS. 5, 6 and 7, the ratchet mechanism B has a large number of teeth 15A located in an arc-shaped region centered on the opening / closing axis X of the arm 3 and the arm 3
A gear-shaped member 15 attached to the side of the gear-shaped member;
A swing regulating member 16 integrally formed with 16A, and an operating member 2 disposed at a position overlapping the swing regulating member 16
5, a swing support shaft 17 for swingably supporting each of the swing regulating member 16 and the operating member 25, and a crane winding type for urging the swing regulating member 16 in both swing directions with the neutral posture interposed therebetween. First
A toggle spring 26 (an example of a main biasing unit) and an operating member 25
Torsion-type second toggle spring 27 (an example of a switching urging means) for urging the gears in both swinging directions sandwiching the neutral posture, and arms at both ends of the gear-shaped member 15 in the region where the teeth 15A are formed. The plate-like operation piece 28 formed with the portions 28A, 28A, the switch pin 29 (an example of a member to be contacted) protrudingly formed at a position in contact with the operation piece 28, and the operating member 25 swinging. A pressing member 30 that contacts the swing regulating member 16 to switch the posture of the swing regulating member 16, and the urging force of the second toggle spring 27 is set to be stronger than the urging force of the first toggle spring 26. . The operation piece 28
, A switch pin 29, an operating member 25, a first and a second
Switching means C for switching the posture of the swing regulating member 16 is constituted by the toggle springs 26 and 27 and the pressing member 30. Note that the neutral position of the swing regulating member 16 is a position in which the point at which the urging force from the first toggle spring 26 acts on the swing regulating member 16 is located on the neutral straight line NL. Is a posture in which the point at which the urging force from the second toggle spring 27 acts on the operating member 25 is located on the neutral straight line NL.

When the arm 3 is operated from the open position "open" to the closed position "closed", the upper engaging member 16A is moved by the urging force of the first toggle spring 26 as shown in FIG. The arm 3 is allowed to swing in the closing direction while being in contact with the tooth body 15 </ b> A of the gear-shaped member 15.
When the gear is operated in the reverse direction (opening direction), the engagement / disengagement piece 16A bites into the tooth body 15A of the gear-shaped member 15 to prevent swinging in the reverse direction. When the arm 3 reaches near the end of the closed posture “closed” by this swing operation, the switch pin 29 comes into contact with the lower arm portion 28A of the operation piece 28 as shown in FIG. Actuating member 2
5 is rotated to reach the neutral position, and the operation is continued. When the position exceeds the neutral position as shown in FIG. 7B, the operation is performed by the urging force of the second toggle spring 27. When the member 25 reaches the posture on the opposite side, and reaches this posture, the pressing member 30 comes into contact with the swing regulating member 16, and the biasing force of the second toggle spring 27 moves the swing regulating member 16 beyond the neutral posture to reverse. It switches to the side posture.
Also, as shown in FIG. 7 (a), even if the arm 3 is operated in the reverse direction in a state where the operating member 25 has reached the neutral position, the posture of the swing regulating member 16 is not switched, as shown in FIG. The operation member 25 exceeds the neutral posture by resuming the operation in the closing posture "closed" direction, and the posture of the swing regulating member 16 can be switched. . In the second embodiment, by setting the difference between the urging force of the first toggle spring 26 and the urging force of the second toggle spring 27, the posture of the swing regulating member 16 is linked to the posture switching of the operating member 25. The switch pin 29, the operating member 25, the first and second toggle springs 26, 2
7. The interlocking switching means C is constituted by a system including the pressing member 30. Further, as described above, the operating member 25 is in the neutral posture (N).
By using the structure in which the posture of the swing regulating member 16 is switched based on the switching of the posture beyond the above, the avoiding means D is configured to avoid the inconvenience of the swing regulating member 16 being left in the neutral posture.

Therefore, also in the second embodiment, a bag-like replenishing container 5 made of a flexible sheet material such as a resin material or a water-resistant paper material is provided in the storage space of the tray 4.
The arm 3 is reliably operated to the closed position “closed” by storing the processing liquid filled in the main body case 1 and setting the arm 3 to the closed position “closed”, and the lock mechanism A As a result, the arm 3 is maintained in the closed position “closed”, and the suction tube 8 is pierced into the replenishing container 5 by setting the closed position “closed” in this manner, and the small diameter drilled at the tip end The processing liquid in the replenishment container 5 is sucked from the suction hole to the suction tube 9 and the liquid level sensor 6, and a predetermined level of the liquid level is set inside the liquid level sensor 6. Then, the liquid is replenished by sucking it from a portion of the liquid level sensor 6 to an automatic developing device for photographic film or a developing unit for developing an image printed on photographic paper by a pump or the like (not shown). Is to do. When the processing liquid is consumed by the suction, the replenishing container 5 contracts due to the atmospheric pressure, and the internal processing liquid can be sent out without any excess. 6 is used to detect that the processing liquid in the medicine replenishing device has been exhausted due to a decrease in the liquid level in the medicine replenishing apparatus. Further, when the arm 3 is operated in the open posture "open", an electric switch is used. 1
When the rod 11 is pulled while the button 2 is pressed, the locked state is released and the opening operation becomes possible as described above.

As described above, while the present invention uses the ratchet mechanism B having the single swing regulating member 16, the arm 3 is operated from the closed position "closed" or the open position "open". In this case, one of the pair of engagement / disengagement pieces 16A, 16A of the swing regulation member 16 is
To prevent the operation in the reverse direction during the operation, and to perform the reliable operation up to the swing end. In addition, when the swing end is reached, the swing The other of the pair of engagement / disengagement pieces 16A, 16A is changed to the gear-like member 15 by forcibly switching the posture of the movement regulating member 16.
The structure that switches the direction in which swing is allowed by contacting the tooth body 15 </ b> A of the first embodiment does not substantially generate “asobi”. While being forced to switch over the neutral position, the swing restricting member 16 is connected to both the pair of engaging and disengaging pieces 16A, 16A by the teeth 15 of the gear-shaped member 15.
The ratchet mechanism B can be reliably operated in any swing direction while avoiding the inconvenience of being left in a neutral position in which the ratchet mechanism B does not come into contact with A. In particular, when the closed posture “closed” is reached by the operation from the open posture “open”, the rocking operation in the reverse direction (opening direction) is permitted, but the closed posture “closed” is maintained by the lock mechanism B. Therefore, the arm 3 does not swing in the opening direction due to an erroneous operation, and is easy to use.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a medicine replenishing apparatus in a state where an arm is set to an open position and a tray is taken out.

FIG. 2 is a side view of the medicine replenishing apparatus in which an arm is set to a closed posture.

FIG. 3 is a side view of the ratchet mechanism according to the first embodiment;

FIG. 4 is a side view showing a neutral state and a state beyond the neutral state of the ratchet mechanism according to the first embodiment;

FIG. 5 is a side view of the ratchet mechanism according to the second embodiment;

FIG. 6 is a sectional view of a ratchet mechanism according to a second embodiment;

FIG. 7 is a side view showing a neutral state and a state beyond the neutral state of the ratchet mechanism according to the second embodiment;

FIG. 8 is a side view showing the structure of a conventional ratchet mechanism and a state during operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 3 Oscillator 15 Gear-like member 15A Teeth 16 Oscillation restricting member 16A Engagement piece 18 Main urging means 19 Operating piece 20 Operated piece 25 Operating member 26 Main urging means 28 Operating piece 29 Contacted member 30 Pressing member B Ratchet mechanism C Switching mechanism D Avoidance means X Opening / closing axis Y Swing axis

Claims (5)

[Claims] A main body is provided with a rocking body that can be switched between an open position and a closed position by a rocking operation around an opening / closing axis, and the rocking member is reversed in an operation range to an open position or a closed position. A swing opening / closing mechanism including a ratchet mechanism for preventing operation in a direction, wherein the ratchet mechanism is supported on a side of the swinging body, or a main body, and has an arc shape around the opening / closing axis. A gear-shaped member provided with a large number of teeth in a region; a gear-like member which is swingably supported around a swing axis in a posture parallel to the opening / closing axis, and which can be disengaged from the teeth of the gear-shaped member. A swing regulating member having a pair of engaging and disengaging pieces, and a biasing force can be applied in any direction on both swing end sides with reference to a neutral posture of the swing regulating member; One of the engaging and disengaging pieces corresponding to the swinging direction can be engaged and disengaged from the tooth body. Main biasing means for swinging the swinging body to a predetermined position and preventing the swinging body from swinging in the opposite direction while allowing the swinging body to swing in a predetermined direction by contact between the engaging piece and the tooth body; When the oscillating body reaches the open position or the closed position, the oscillating member swings in the opposite oscillating end direction beyond the neutral position against the urging force of the main urging means. A swinging opening / closing mechanism having a switching means for causing the swinging to open and close. 2. The swing opening / closing mechanism according to claim 1, further comprising: avoiding means for avoiding a phenomenon in which the engaging member is held in the neutral posture when the posture of the swing regulating member is switched by the switching means. . 3. The switching means includes an operating piece that swings integrally with the swinging body, and an operated piece that switches the posture of the swing regulating member by contact with the operating piece. An engagement unit that engages the operating piece and the operated piece in a state where the engaging member reaches a neutral position in a state where the operating piece is in contact with the operated piece and integrally operates the operating piece and the operated piece; 3. The swing opening / closing mechanism according to claim 2, comprising a structure. 4. An operating member which swings integrally with a swinging body, an operating member which is swingably supported around a swing axis of the swing regulating member, Switching biasing means capable of biasing in both directions on both swing end sides with respect to the neutral posture, and adjusting the posture of the operating member by operating force from an operating piece when the rocking body is rocked. Swinging to a position exceeding the neutral position, and an interlocking switching mechanism for switching the position of the swing restricting member by transmitting an operation force from the operating member to the rocking restricting member after the neutral position is exceeded, The swing opening / closing mechanism according to claim 2. 5. The actuating member is formed such that the urging force of the switching urging means is set stronger than the urging force of the main urging means, and the interlocking switching mechanism switches the posture of the operating member by contact with an operation piece. And a pressing member formed on the operating member so as to contact and transmit the operating force of the operating member to the swing regulating member when the posture of the operating member is switched. 5. The swing opening / closing mechanism according to claim 4, wherein said swing opening / closing mechanism is provided with an avoiding means.