JPH1179427A - Heavy weight charging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb a shock in the case of a heavy weight or its holding member colliding against a positioning member, prevent its position displacement and damage, in the case of charging a photographic processor, printer, etc., with a heavey weight of paper cassette or the like. SOLUTION: In a heavy weight holding member 501 slid on a fixed rail 500, a roller 510 is rotatably provided, the heavy weight holding member 501, before it is brought into contact with a positioning member 504, is brought into contact with a contact member 511 provided between the roller 510 and a pair of the fixed rails 500. At least one of the roller 510 and the contact member 511 is formed by a resin material (elastomer material) of large elastic coefficient, by elastic deformation of the resin material, kinetic energy of the heavy weight holding member 501 is absorbed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heavy object loading device for loading a heavy object such as a paper cassette in a predetermined position in a photographic processing device or a printing device.

[0002]

2. Description of the Related Art Generally, in a photographic processing apparatus or a printing apparatus, photosensitive material such as photographic paper and plain paper (hereinafter simply referred to as paper) are wound in a roll or cut into a predetermined size and stacked. It is stored in the paper cassette in the state of being turned. The paper cassette is loaded on a guide rail provided in each apparatus main body or on a tray provided so as to be able to be pulled out from the apparatus main body (not shown because it is well known).

In a photographic processing apparatus or a printing apparatus, the exposure position of a photograph or the printing start position has a significant effect on the quality of a completed photograph or printing. Therefore, in order to determine the loading position of the paper cassette in the photographic processing device or the printing device, a positioning stopper or the like that comes into contact with the paper cassette is provided in each device main body.

[0004]

Most of the photographic processing apparatuses and printing apparatuses are for business use, and the length (in the case of a roll) or the number of sheets (in the case of cut sheets) accommodated in a paper cassette at one time is determined. It is huge. As an example, in the case of a photographic processing apparatus, the length of photographic paper wound in a roll shape is 1
It reaches 80m and weighs about 14kg including the paper cassette
It is.

When such a heavy paper cassette is loaded on a guide rail or a drawable tray and slid toward the apparatus main body, a large force is required to start sliding the paper cassette. Once the slide is started, it does not stop easily due to its inertia. Therefore, the paper cassette or tray collides with a positioning stopper provided in the apparatus main body while having a large kinetic energy.

[0006] The collision between the paper cassette or tray and the positioning stopper produces a loud noise and gives an impact to the entire apparatus. In particular, in a photo processing apparatus, since an optical system including a stretching lens is used, there is a problem that the optical system may be disrupted by repeatedly applying an impact force each time a sheet is replaced. Also, by repeatedly colliding the paper cassette or tray with the positioning stopper, the position of the positioning stopper may be shifted,
There is a problem that the paper cassette, the tray, the positioning stopper and the like may be damaged.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems of the prior art, and is capable of removing a heavy object for a long time without damaging a case, a tray, a positioning stopper, etc. of a heavy object such as a paper cassette. It is an object of the present invention to provide a heavy load device which can be stably loaded at a predetermined position.

[0008]

In order to achieve the above object, a first heavy loader of the present invention comprises a fixed rail which is held substantially horizontally, a heavy load holding member which slides on the fixed rail, and A positioning member for regulating the position of the heavy load holding member on the fixed rail, a roller rotatably provided on the heavy load holding member, and a contact with the roller before the heavy load holding member comes into contact with the positioning member A collision member, and absorbs kinetic energy of the weight holding member by elastic deformation of the roller and / or the collision member.

The fixed rail is a pair of parallel rails fixed to an apparatus body such as a photographic processing apparatus or a printing apparatus, and the heavy object holding member slides on the fixed rail via rollers or the like. A movable rail or a tray fixed to the movable rail, and holds a heavy object such as a paper cassette at a predetermined position on the movable rail. The positioning member is a stopper or the like attached to the apparatus main body, and abuts or engages with a part of the heavy object holding member, for example, an end surface on the apparatus main body side to position the heavy object holding member relative to the apparatus main body. I do. The roller is rotatably supported, for example, in the vicinity of an end of the heavy object holding member on the side of the apparatus main body, and is supported overhead so as not to contact the fixed rail or the bottom surface of the apparatus main body. The conflicting member is a protrusion or the like provided near the end of the fixed rail on the apparatus body side, and the roller conflicts only with the conflicting member (spatial interference). The roller and the contact member contact each other before the heavy object holding member and the positioning member come into contact with each other, and absorb the kinetic energy of the heavy object holding member by elastic deformation of the roller and / or the contact member. When the member and the positioning member come into contact with each other, the kinetic energy of the heavy object holding member is reduced. As a result, it is possible to reduce the impact at the time of collision between the heavy load holding member and the positioning member, prevent the positioning member from being displaced, and prevent the heavy load holding member and the positioning member from being damaged. Further, since the roller is rotatable, the possibility that the roller may damage the contact member is small, and a heavy object can be stably loaded at a predetermined position for a long time.

[0010] In the above configuration, the elastic modulus of one of the material of the roller and the contact member may be made larger than the elastic modulus of the other material. For example, one of the roller and the contact member is made of metal or hard resin (plastomer material)
And the other is formed of an elastic resin (elastomer material) having a large elastic coefficient. With such a configuration, energy absorption at the time of elastic deformation of the roller or the conflicting member can be increased, and wear and plastic deformation of the roller or the conflicting member can be reduced. As a result, it is possible to extend the interval between parts replacement of the roller and the conflicting member.

[0011] The second heavy-loading device of the present invention includes:
A fixed rail held substantially horizontally, a heavy-weight holding member that slides on the fixed rail, a positioning member that regulates the position of the heavy-weight holding member on the fixed rail, and a shaft that swings on the heavy-weight holding member. A supported arm, a roller rotatably provided near the free end of the arm, an elastic member for urging the arm to swing in a predetermined direction, and a position before the heavy object holding member comes into contact with the positioning member. And a contact member that comes into contact with the roller. When the roller comes into contact with the contact member, the elastic member is deformed to absorb the kinetic energy of the heavy object holding member.

As the elastic member, for example, a leaf spring, a tension coil spring, a compression coil spring, a torsion spring, an elastic resin body or the like can be used. The predetermined direction is a direction in which the roller is pressed on the fixed rail or on the bottom surface of the apparatus main body. The roller may be rolled on a fixed rail or on the bottom surface of the apparatus main body without providing a stopper or the like for regulating the rotation of the arm, or a stopper for regulating the rotation of the arm may be provided to fix the roller to the fixed rail or It may be supported overhead so as not to contact the bottom surface of the apparatus main body. When the roller collides with the contact member, the arm swings (turns) in a direction opposite to the predetermined direction, thereby deforming the elastic member. The kinetic energy of the heavy load holding member is absorbed by the elastic deformation of the elastic member, and the kinetic energy of the heavy load holding member is reduced when the heavy load holding member comes into contact with the positioning member. As a result, it is possible to reduce the impact at the time of collision between the heavy load holding member and the positioning member, prevent the positioning member from being displaced, and prevent the heavy load holding member and the positioning member from being damaged. Further, in this configuration, since neither the roller nor the conflicting member is hardly deformed, there is almost no need to replace parts of the roller and the conflicting member.

[0013] The third heavy-loading device of the present invention includes:
A fixed rail held substantially horizontally, a heavy object holding member that slides on the fixed rail, a positioning member that regulates the position of the heavy object holding member on the fixed rail, and a roller that is rotatable on the heavy object holding member. A contact member that contacts the roller before the heavy object holding member contacts the positioning member,
An elastic member that urges the contact member in a predetermined direction, and absorbs kinetic energy of the heavy object holding member by deformation of the elastic member when the roller and the contact member contact each other.

As the elastic member, a leaf spring, a tension coil spring, a compression coil spring, a torsion spring, an elastic resin body, or the like can be used as described above. The predetermined direction is, for example, a direction opposite to the direction of action of gravity. Alternatively, the opposite direction (the direction of action of gravity) may be used. When the roller collides with the conflicting member, the conflicting member is pushed down against the urging force of the elastic member. The kinetic energy of the heavy load holding member is absorbed by the elastic deformation of the elastic member, and the kinetic energy of the heavy load holding member is reduced when the heavy load holding member comes into contact with the positioning member. As a result, it is possible to reduce the impact at the time of collision between the heavy load holding member and the positioning member, prevent the positioning member from being displaced, and prevent the heavy load holding member and the positioning member from being damaged. Further, even in this configuration, since neither the roller nor the conflicting member is hardly deformed, there is almost no need to replace parts of the roller and the conflicting member.

Further, in the above configuration, the elastic member may include
A configuration may be such that a plurality of conflict members are provided in a direction parallel to the fixed rail. By using a plurality of elastic members for one conflicting member (a plurality of pairs of rollers and conflicting members may be used), the amount of pushing of the conflicting member and the amount of each The amount of deformation of the elastic member changes. By appropriately combining the number and shape of the elastic members, the rate of absorption of the kinetic energy of the heavy load holding member (so-called brake engagement)
Can be set arbitrarily.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a photographic processing apparatus using a heavy-loading apparatus according to the present invention. The photographic processing apparatus 1 includes an exposure unit 100 for enlarging and projecting an image on a film and exposing a photosensitive material (photographic paper), and a photosensitive material wound in a roll shape. 100
And a developing unit 300 for developing, fixing, washing and drying the exposed photosensitive material.

The photosensitive material unit 200 is an exposure unit 1
The paper cassette 201 is provided at a lower portion of the paper cassette 201 and is provided so as not to expose the photographic paper wound in a roll shape to light.
Is stored. An example of a new photosensitive material wound in a roll shape has a length of about 180 m and a weight including the paper cassette 201 of 14 kg. Therefore, inside the opened door 202, there is provided a heavy load device for placing the paper cassette 201 and storing it in the photosensitive material unit 201. The details will be described later. When the paper cassette 201 is loaded in the photosensitive material unit 200, the photosensitive material is pulled out of the paper cassette 201, cut into a predetermined size by a cutter (not shown), and then conveyed to the exposure unit 100.

The exposure unit 100 includes a stretching lens unit (not shown), a light source 111, a mirror unit 112 for bending the optical path of light from the light source at a substantially right angle, and guiding the light path to the stretching lens unit, and an operation panel 113.
, A monitor display device 114, and a housing 120 for covering the extension lens unit and shielding light from the outside.

The developing unit 300 develops, fixes, rinses, and dries the exposed photosensitive material as described above. At least in the entire developing process and at the beginning of the fixing process, the photosensitive material is exposed to stray light from outside. must not. Therefore, the developing unit 300 includes at least a developing process,
It is composed of two parts, a dark room part 301 for performing a fixing step and a washing step, and a drying part 302 for performing drying and the like.
The dried photosensitive material (that is, a photograph) is discharged from the discharge port 303 on the upper part of the developing unit 300, and is stacked on the first transport belt 304, for example, by the number of frames photographed on one film. When the processing for one film is completed, the film is moved onto the second conveyor belt 305 by the first conveyor belt 304 and is held on the second conveyor belt 305. A plurality of photographs can be held on the second transport belt 305.

(First Embodiment) Next, the details of the first embodiment of the heavy loader of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. As shown in FIG. 2, a tray-shaped heavy-weight holding member 5 for mounting the paper cassette 200 is provided.
01 slides on a pair of parallel fixed rails 500 via rollers or the like (not shown). In addition, the fixed rail 500
A movable rail 502 is provided between the fixed rail 500 and the heavy object holding member 501 to substantially extend the length of the movable rail 502. The pair of fixed rails 500 are fixed substantially horizontally to the bottom surface of the photosensitive material unit 200 of the photographic processing apparatus 1. On the bottom surface 504 between the pair of fixed rails 500,
By contacting the end surface 501A of the heavy object holding member 501, the heavy object holding member 50 on the fixed rail 500 is contacted.
A positioning member 505 for regulating the position of No. 1 is provided.

Fixed rail 500 of heavy object holding member 501
A roller 510 is rotatably supported at an end of a portion 501B parallel to the roller. Also, a pair of fixed rails 500
A contact member 511 that contacts the roller 510 is provided near the end of the fixed rail 500 in the bottom surface 504 between the contact members. The positional relationship between the roller 510 and the contact member 511 is such that the end surface 501A of the heavy-weight holding member 501
Roller 510 and contact member 511 before contacting with roller 5
Are set to conflict with each other. A guide 501C for facilitating the loading of the paper cassette 201 at a predetermined position on the heavy object holding member 501 is provided on the upper surface of the heavy object holding member 501.

Next, the details of the roller 510 and the contact member 511 are shown in FIG. 3 or FIG. 3A and 3B show an example in which the kinetic energy of the heavy object holding member is absorbed by elastic deformation of the conflicting member 511. FIG. 3A shows a state in which the roller 510 does not conflict with the conflicting member 511, and FIG. The state in which the member 511 is in contact with each other is shown.
4A and 4B show an example in which the kinetic energy of the heavy object holding member is absorbed by elastic deformation of the roller 510. FIG. 4A shows a state in which the roller 510 does not conflict with the conflicting member 511.
(B) shows a state in which the roller 510 and the contact member 511 are in contact with each other.

As shown in FIG. 3 or FIG.
Is aerial supported so as not to contact the fixed rail 500 or the bottom surface 504, and the roller 510 only conflicts with (spatially interferes with) the conflicting member 511. In the case of FIG.
A metal or a hard resin (plastomer material) having a small elastic coefficient is used as the material of the contact member 511, and an elastomer material having a larger elastic coefficient than the material of the roller 510 is used as the material of the conflicting member 511. In the case of FIG.
An elastomer material having a large elastic coefficient is used as the material of No. 0, and a metal or a hard resin (plastomer) having a small elastic coefficient is used as the material of the conflicting member 511. Alternatively, both the roller 510 and the contact member 511 may be formed of an elastomer material having a large elastic coefficient.

The roller 510 and the contact member 511 are connected to the end surface 501A of the heavy object holding member 501 and the positioning member 505.
Are in contact with each other before contact, the elastic member of the roller 510 or the contact member 511 deforms the heavy object holding member 50.
1 to absorb the kinetic energy of the
The kinetic energy of the heavy object holding member 501 is reduced when the positioning member 505 comes into contact with the positioning member 505. As a result, the impact at the time of collision between the heavy object holding member 501 and the positioning member 505 is reduced, and the displacement of the positioning member 505 can be prevented, and the heavy object holding member 501 and the positioning member 505 can be prevented from being damaged. It becomes possible. Further, since the roller 510 is rotatable, the risk of the roller 510 damaging the contact member 511 is small, and a heavy object can be stably loaded at a predetermined position for a long period of time.

In FIGS. 3 and 4, the conflicting member 511 is shown.
Although the surface in contact with the roller 510 is a flat surface, the present invention is not limited to this, and may be an inclined surface or a curved surface.
In the latter case, the roller 510 depends on the position of the roller 510.
The so-called braking force acting between the contact member 511 and the contact member 511 can be arbitrarily changed, and the heavy object holding member 501 and the positioning member 505 can be brought into contact with each other without causing collision.

(Second Embodiment) Next, a second embodiment of the heavy-loading apparatus of the present invention will be described in detail with reference to FIG. The basic configuration of the second embodiment is the same as that of the first embodiment shown in FIG. 2, and the configuration of the roller 510 and the contact member 511 are different. In FIG. 5, (a) shows a state in which the roller 510 and the contact member 511 do not conflict with each other,
(B) shows a state in which the roller 510 and the contact member 511 are in contact with each other.

As apparent from FIG. 5, in the second embodiment, the roller 510 is not directly supported by the heavy-weight holding member 501 but is supported by a portion parallel to the fixed rail 500 of the heavy-weight holding member 501. The arm 520 is pivotally (rotatably) supported on the arm 501B so as to freely swing, and a roller 51 is provided near a free end (an end opposite to the end on which the arm 520 is supported) of the arm 520.
0 is rotatably supported. A compression coil spring 521 is provided between the arm 520 and the protrusion 501D provided on the heavy-weight holding member 501.
0 is swingably urged in a predetermined direction (a direction in which the roller 510 is pressed onto the fixed rail 500 or the bottom surface 504). The fixed rail 50 of the heavy object holding member 501 is also provided.
A stopper 501E for restricting the swing of the arm 520 is provided on the portion 501B parallel to the zero, and the roller 510 is supported overhead so as not to contact the fixed rail 500 or the bottom surface 504. Further, in order to maintain the braking effect due to the compression of the compression coil spring 521 for a certain period of time, the surface of the contact member 511 that contacts the roller 510 is formed as a curved surface, but is not limited to this, and may be an inclined surface. May be.

In the second embodiment, when the roller 510 and the contact member 511 conflict with each other, the compression coil spring 521 is compressed, and the kinetic energy of the heavy load holding member 501 is absorbed by its elastic deformation. Therefore, the roller 510 and the contact member 511 do not need to be elastically deformed. Therefore, as the material of the roller 510 and the contact member 511, metal, hard resin (plastomer material), or the like can be used.

Incidentally, instead of the compression coil spring 521,
Other elastic members, for example, a leaf spring, a tension coil spring, a torsion spring, an elastic resin body or the like may be used. Further, without providing a stopper 501E for restricting the rotation of the arm 520, the roller 510 is placed on the fixed rail 500 or on the bottom surface 5E.
04 and the like may be rolled. In this configuration, the roller 5
Neither the roller 10 nor the conflicting member 511 need to be replaced, since both the contact member 10 and the conflicting member 511 are hardly deformed.

(Third Embodiment) Next, a third embodiment of the heavy loader of the present invention will be described in detail with reference to FIGS. The basic configuration of the second embodiment is the same as that of the first embodiment shown in FIG.
0 and the configuration of the conflicting member 511 is different. In FIG.
(A) is a state where the roller 510 and the conflicting member 511 do not conflict with each other, (b) is an initial state of the conflict between the roller 510 and the conflicting member 511, and (c) is a state where the roller 510 and the conflicting member 51 are in conflict.
1 shows a state in the middle of a conflict.

As is apparent from FIG. 6, in the third embodiment, the roller 510 is rotatably supported by a portion 501B of the heavy-weight holding member 501 parallel to the fixed rail 500 so as to be freely rotatable. The contact with the member 511 causes the contact member 511 to be pushed down in the direction of action of gravity. A conflicting member 511 is provided on the bottom surface 504.
An opening 504A for exposing the top of the first spring and a spring chamber 504B for accommodating the first compression coil spring 531 and the second compression coil spring 532 are formed. In the spring chamber 504B, the contact member 511 is urged by the first and second compression coil springs 531 and 532 in a direction opposite to the direction in which gravity acts.

In the third embodiment, when the roller 510 and the contact member 511 conflict with each other, the first compression coil spring 53
The first and second compression coil springs 532 are compressed to absorb the kinetic energy of the heavy object holding member 501 by their elastic deformation. Therefore, similarly to the second embodiment, the roller 510 and the conflicting member 511 do not need to be elastically deformed, and a metal or a hard resin (plastomer material) or the like is used as a material of the roller 510 and the conflicting member 511. Can be.

When the contact between the roller 510 and the contact member 511 starts, the contact member 511 is pushed down in the direction of gravity so that the compression coil springs 531 and 532 are compressed. The roller 510 and the contact member 511 shown in FIG.
The first compression coil spring 531
Is greatly compressed, but the second compression coil spring 53
2 is hardly compressed. In this state, most of the braking force acting between the roller 510 and the contact member 511 is borne by the first compression coil spring 531. On the other hand, in the state in the middle stage of the collision between the roller 510 and the collision member 511 shown in FIG. 6C, the first compression coil spring 531 and the second compression coil spring 532 are almost all compressed. In this state, the first compression coil spring 531 and the second compression coil spring 532 bear the braking force acting between the roller 510 and the contact member 511 almost equally. Although not shown, in the last stage of the contact between the roller 510 and the contact member 511, the second compression coil spring 532 is largely compressed, the first compression coil spring 531 is hardly compressed, and the roller 510 and the contact member 511 are not compressed. Most of the braking force acting between the contact member 511 is borne by the second compression coil spring 532. At this time, the speed or the kinetic energy of the weight holding member 501 and the roller 51
FIG. 7 shows the relationship between 0 and the time from when the contact member 511 starts to contact.

By using a plurality of compression coil springs 531 and 532 for one roller 510 and the conflicting member 511, the amount of pushing of the conflicting member 511 according to the position of the roller 510 in the direction parallel to the fixed rail 500 is determined. The amount of deformation of the compression coil springs 531 and 532 can be changed, and by appropriately combining the number and shape of the compression coil springs, the rate of absorption of kinetic energy of the heavy load holding member 501 (so-called brake engagement) can be arbitrarily determined. Can be set to.

The first and second compression coil springs 53
Instead of 1 and 532, a leaf spring, a tension coil spring, a torsion spring, an elastic resin body, or the like can be used.
Further, the conflicting member 511 may be supported overhead, and may be configured to be urged in the direction of gravity by a spring or the like. Further, the number of compression coil springs or the like for urging the contact member 511 is not limited to two, and may be one or three or more. Further, a plurality of sets of the roller 510 and the contact member 511 may be used.

Although the surface of the contact member 511 that contacts the roller 510 is a flat surface, the present invention is not limited to this, and may be an inclined surface or a curved surface.

[0037]

As described above, according to the first heavy object loading device of the present invention, the fixed rail held substantially horizontally, the heavy object holding member sliding on the fixed rail, and the fixed rail A positioning member that regulates the position of the heavy object holding member, and a roller rotatably provided on the heavy object holding member,
The heavy object holding member includes a conflicting member that comes into contact with the roller before contacting the positioning member, and the kinetic energy of the heavy object holding member is absorbed by elastic deformation of the roller and / or the conflicting member. When the member contacts the positioning member, the kinetic energy of the heavy object holding member is reduced. As a result, the impact at the time of collision between the heavy-weight holding member and the positioning member is reduced, and the positioning member can be prevented from being displaced, and the heavy-weight holding member and the positioning member can be prevented from being damaged. Can be stably loaded at a predetermined position over a long period of time.

Further, by making the elastic modulus of one material of the roller and the conflicting member larger than that of the other material, the energy absorption at the time of elastic deformation of the roller or the conflicting member can be increased. In addition, wear and plastic deformation of the roller or the conflicting member can be reduced. As a result, it is possible to extend the interval between parts replacement of the roller and the conflicting member.

According to the second heavy loader of the present invention, the fixed rail held substantially horizontally, the heavy load holding member sliding on the fixed rail, and the heavy load holding member on the fixed rail are provided. A positioning member for regulating the position of the arm, an arm pivotally supported by the heavy-weight holding member, a roller rotatably provided near the free end of the arm, and an arm capable of swinging in a predetermined direction. A biasing elastic member, and a contact member that contacts the roller before the heavy object holding member comes into contact with the positioning member. When the roller and the contact member contact each other, the elastic member is deformed to deform the heavy object holding member. Since the kinetic energy is absorbed, when the roller collides with the contact member, the arm swings in a direction opposite to the predetermined direction, and the kinetic energy of the weight holding member is absorbed by the elastic deformation of the elastic member. As a result, when the heavy load holding member and the positioning member come into contact with each other, the kinetic energy of the heavy load holding member is reduced, the shock at the time of collision between the heavy load holding member and the positioning member is reduced, and the positioning member is displaced. , And damage to the heavy load holding member and the positioning member can be prevented. Further, in this configuration, since neither the roller nor the conflicting member is hardly deformed, there is almost no need to replace parts of the roller and the conflicting member.

Further, according to the third heavy object loading device of the present invention, the fixed rail held substantially horizontally, the heavy object holding member sliding on the fixed rail, and the heavy object holding member on the fixed rail A positioning member for regulating the position of the positioning member, a roller rotatable with respect to the heavy object holding member, a collision member that collides with the roller before the heavy material holding member comes into contact with the positioning member, and biasing the collision member in a predetermined direction. Since the elastic member is provided, the kinetic energy of the weight holding member is absorbed by the deformation of the elastic member when the roller and the contact member conflict with each other,
When the roller collides with the conflicting member, the conflicting member is pushed down against the urging force of the elastic member, and the kinetic energy of the weight holding member is absorbed by the elastic deformation of the elastic member. As a result, when the weight holding member and the positioning member abut, the kinetic energy of the weight holding member is reduced,
It is possible to reduce the impact at the time of collision between the heavy object holding member and the positioning member, prevent the positioning member from being displaced, and prevent the heavy object holding member and the positioning member from being damaged. Further, even in this configuration, since neither the roller nor the conflicting member is hardly deformed, there is almost no need to replace parts of the roller and the conflicting member.

Further, by providing a plurality of elastic members in a direction parallel to the fixed rail with respect to one contact member,
Depending on the position of the roller in the direction parallel to the fixed rail, the amount of pushing of the conflicting member and the amount of deformation of each elastic member change,
It is possible to arbitrarily set the rate of absorption of the kinetic energy of the heavy load holding member (so-called brake engagement).

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a configuration of a photographic processing apparatus using a heavy load device of the present invention.

FIG. 2 is a perspective view showing the configuration of the first embodiment of the heavy load device of the present invention.

3A and 3B are diagrams illustrating a configuration example of a roller 510 and a contact member 511 according to the first embodiment of the heavy load device of the present invention. FIG. 3A illustrates that the roller 510 does not conflict with the contact member 511. 7B shows a state in which the roller 510 and the contact member 511 are in contact with each other.

FIGS. 4A and 4B are diagrams illustrating another configuration example of the roller 510 and the contact member 511 in the first embodiment of the heavy object loading device according to the present invention. FIG. 4A illustrates the contact between the roller 510 and the contact member 511. 7B shows a state in which the roller 510 and the contact member 511 are in contact with each other.

5A and 5B are diagrams illustrating a configuration of a roller 510 and a conflicting member 511 according to a second embodiment of the heavy load device of the present invention. FIG. 5A illustrates a state in which the roller 510 does not conflict with the conflicting member 511. (B) shows the roller 510 and the conflicting member 51
1 shows a state in which they conflict with each other.

6A and 6B are diagrams illustrating a configuration of a roller 510 and a conflicting member 511 according to a third embodiment of the heavy-loading device of the present invention. FIG. 6A illustrates a state in which the roller 510 does not conflict with the conflicting member 511. (B) shows the roller 510 and the conflicting member 51
1 shows an initial state in which the roller 510 and the contact member 511 are in contact with each other, and FIG.

FIG. 7 is a diagram showing the relationship between the speed or kinetic energy of the heavy load holding member 501 and the time from when the roller 510 and the touch member 511 start to touch in the third embodiment of the heavy load device of the present invention. is there.

[Explanation of symbols]

 500: fixed rail 501: heavy object holding member 501A: end surface that comes into contact with positioning member 505 501B: portion parallel to fixed rail 500 504: bottom surface 505: positioning member 510: roller 511: contact member 520: arm 521: compression coil spring 531: First compression coil spring 532: Second compression coil spring

Claims (5)

[Claims] A fixed rail that is held substantially horizontally; a heavy-weight holding member that slides on the fixed rail; a positioning member that regulates a position of the heavy-weight holding member on the fixed rail; A roller rotatably provided on the object holding member, and a conflicting member that comes into contact with the roller before the heavy object holding member comes into contact with the positioning member; A weight loader for absorbing kinetic energy of the weight holding member by elastic deformation. 2. The heavy object loading device according to claim 1, wherein the elastic modulus of one of the material of the roller and the contact member is larger than the elastic modulus of the other material. 3. A fixed rail held substantially horizontally, a heavy object holding member sliding on the fixed rail, a positioning member for regulating a position of the heavy object holding member on the fixed rail, and the weight. An arm pivotally supported by the object holding member, a roller rotatably provided near a free end of the arm, an elastic member for urging the arm to swing in a predetermined direction, and the weight A contact member that contacts the roller before the object holding member comes into contact with the positioning member; and the kinetic energy of the heavy object holding member due to deformation of the elastic member when the roller and the contact member conflict. A heavy loader that absorbs. 4. A fixed rail held substantially horizontally, a heavy-weight holding member sliding on the fixed rail, a positioning member for regulating a position of the heavy-weight holding member on the fixed rail, and the weight A roller rotatably provided on the object holding member, a conflicting member that comes into contact with the roller before the heavy object holding member comes into contact with the positioning member, and an elastic member that urges the conflicting member in a predetermined direction. A load device for absorbing a kinetic energy of a weight holding member by deforming the elastic member when the roller and the conflict member conflict with each other. 5. The heavy object loading apparatus according to claim 4, wherein a plurality of the elastic members are provided for one contact member in a direction parallel to the fixed rail.