JP3063965B2 - Office equipment installation structure using external force absorbing means - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external force absorbing device for protecting office equipment, such as a copying machine, a facsimile, and a personal computer, installed in an office building against an external force such as an excessive shock or vibration caused by an earthquake or the like. It relates to an installation structure of office equipment using a means.

[0002]

2. Description of the Related Art A schematic configuration of a copying machine as an example of office equipment and a conventional example of an installation structure thereof will be described with reference to FIGS. FIG. 15 is a front sectional view of the copying machine, and FIG. 16 is a perspective view showing a state of the copying machine when an earthquake occurs or when excessive impact or vibration is applied.

As shown in FIG. 15, a copying machine includes an image forming section 110 including a photosensitive drum 101 and the like, a belt conveying section 120 for conveying a transfer sheet on which an image has been transferred, and fixing the image transferred on the transfer sheet. Fixing section 130, original glass 102
The optical system 140 for guiding the upper document image to the image forming unit 110, the large-size paper feeding device 150,
An upper and lower two-stage paper feed cassettes 103 and 104 are inserted into one side of the apparatus main body 100, and a paper discharge tray 105 is provided on the other side.

When the front door 106 of the apparatus main body 100 is opened, as shown in FIG.
0 and the large-sized paper feeding device 150 can be taken in and out in the front-rear direction. After the belt conveyance unit 120 is loaded into the apparatus main body 100, the engagement provided on a part of the belt conveyance unit 120 is performed. The unit 121 is loaded and set at a predetermined position in the apparatus main body 100 by engaging the support unit 107 on the apparatus main body 100 side. Large-size paper feeder 1
The lock 50 is locked at a predetermined position by operating the lock lever 151 after loading it into the apparatus main body 100.

A projection 10 is provided inside each front door 106.
8 (only one is shown) are provided, and when the front doors 106 are closed, the projections 108 are engaged with the receiving portions 109 on the apparatus main body 100 side, and the front doors 106 are locked.

By the way, as shown in the figure, the copying machine has been installed at a predetermined position with respect to the floor surface 200 by fixing the apparatus main body 100 to the floor surface 200 with bolts 162 of the L-shaped sheet metal 161.

[0007] Alternatively, as shown in FIG. 17, the copying machine has been installed on the floor 200 so as to be adjustable in height by an adjuster 163 provided at the bottom of the apparatus main body 100. Here, the adjuster 163 includes an adjusting screw 163a and a base member 163b. The base member 163b supports the weight of the apparatus main body 100 and is in contact with the floor surface 200 with a predetermined contact force. Then, the adjusting screw 163
a through which a Z-shaped sheet metal 164 is inserted.
4 was fixed to the floor surface 200 with bolts 165, whereby the apparatus main body 100 was installed and fixed at a predetermined position.

[0008]

The installation structure of the above-mentioned conventional copying machine shown in FIG. 15, FIG. 16 or FIG.
Although the apparatus main body 100 does not move to completely fix (rigidly couple) 00 to the floor surface 200 (or the wall surface), there is an impression that it is effective against an external force such as an earthquake, excessive shock or vibration. , L-shaped sheet metal 1 shown in FIGS. 15 and 16
61 and the apparatus body 100 of the Z-shaped sheet metal 164 shown in FIG.
The impact force to the mounting portion (for example, the bottom surface or the front surface or the side cover surface of the apparatus main body 100) and the floor surface 200 becomes excessive, and the portion receiving the large impact force may be damaged or broken. is there.

As shown in FIG. 16, the front door 106 is opened in the direction of the arrow due to an excessive impact force or the like, and the belt conveyance unit 120 and the large-size paper feeder 150 are moved toward the front of the apparatus. It may jump out in the direction to block an evacuation route or passage during a disaster, damage functional components inside the apparatus main body 100, and possibly cause the paper feed cassettes 103 and 104 and the paper discharge tray 105 to fall off.

Further, in office equipment in which the height of the apparatus main body is high and the position of the center of gravity is above, even if the lower part is fixed to a floor or the like as in the conventional case, the apparatus main body falls over or the upper unit (for example, In some cases, the scanner unit, the document processing device, etc.) may fall off, and the connection cable between the units and the power supply cable may be disconnected.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object the object of the present invention is to allow office equipment to fall down or move greatly even when it receives an external force such as an excessive shock or vibration during an earthquake or the like. It is an object of the present invention to provide a structure for installing office equipment using external force absorbing means that can prevent the unit from falling off, reduce the acceleration applied to the inside of the apparatus, and maintain the functions of the internal parts and the unit.

[0012]

To achieve the above object, the present invention provides a fixing member fixed to a floor or a wall,
A wire that is extended by receiving an external force greater than or equal to a predetermined value, a locking member that is attached to one end of the wire and that is locked to the fixing member, and controls the relative movement of the wire in one direction held by the wire. The installation structure of the office equipment using the external force absorbing means including a lock member which causes a slip between the wire and the wire when a predetermined value or more acts on the wire, the wire of the external force absorbing means Is fixed to the fixing member through the locking member, and is stretched so as to surround the periphery of the lower part of the office equipment from the outside in a state where the wire is passed through a part of the office equipment and brought into contact with the wire, The other end of the wire is configured to be locked to a floor or a wall surface or the fixing member via the lock member.

Therefore, according to the present invention, when an earthquake or excessive shock or vibration occurs, the wire stretched around the apparatus body of the office equipment applies excessive impact force or vibration force to the apparatus body. The extension of this wire absorbs and reduces excessive impact and vibration forces, and also reduces the acceleration applied to the inside of the device body, so that the device body can be prevented from falling and the unit can be dropped. This prevents internal components and units from functioning. Further, although the apparatus main body may move to some extent due to the extension of the wire, the amount of movement is restricted by the wire, so that such a problem that the apparatus main body largely moves and blocks a passage or an evacuation route does not occur.

Since the wire does not extend to an external force less than a predetermined value, the office equipment does not move due to a slight impact or vibration in a normal use state, and the office equipment is fixedly installed at a predetermined position. You.

Further, an excessive external force which cannot be completely absorbed by the elongation of the wire is effectively absorbed by frictional resistance generated by sliding of the lock member. The frictional resistance can be appropriately adjusted according to the weight of the office equipment and the like.

Further, the length of the wire can be easily adjusted according to the size of the office equipment, and an appropriate tension can be applied to the wire.

[0017]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

<First Embodiment> FIG. 1 is a side view of an office machine fixed and installed by an external force absorbing means according to a first embodiment, FIG. 2 is a perspective view of the external force absorbing means, and FIG. FIG. 4 is a partial perspective view showing a fixing structure of the locking member to the wire constituting the means, and FIG. 4 is an exploded perspective view of a lock member constituting the external force absorbing means.

In FIG. 1, reference numeral 1 denotes an apparatus main body of office equipment such as a copying machine, which is movably supported on a floor 2 by a plurality of casters 3.

An L-shaped fixing member 4 is fixed on the floor 2 with bolts 5.
The hook portion 7a of the locking member 7 fixed to one end of the wire 6 is hooked on the elongated hole 4a (see FIG. 2) formed in the wire 6. The wire 6 is passed through a long hole 8a of a fixing bracket 8 fixed to a lower portion of the apparatus main body 1 and disposed between the bottom plate 1a of the apparatus main body 1 and the floor surface 2, and the caster 3 (and an adjuster (not shown)) is provided. The fixing member is stretched so as to surround the periphery of the apparatus main body 1 from the outside in a state where the fixing member 4 is in contact with the fixing member 4 through a lock member 9 having a length adjusting function. It is locked to.

As shown in FIG. 3, the locking member 7 is passed through one end of the wire 6 and crimped, and the hook portion 7a is integrally formed at the tip thereof.

Further, as shown in FIG. 4, the lock member 9 is composed of a fixed plate 9A integrally provided with a hook 9a to be locked by a fixed member (not shown) and a rectangular flat plate-shaped adjusting plate 9B. The lock member 9 is fixed to the wire 6 by passing the wire 6 between the fixing plate 9A and the adjusting plate 9B and binding the fixing plate 9A and the adjusting plate 9B with two adjusting screws 10.

As described above, one end of the wire 6 is locked to the fixing member 4 via the locking member 7, but the worker (serviceman or user) can adjust the locking screw 9 of the locking member 9. The wire 6 is caster 3 (and an adjuster not shown) by loosening 10 and pulling the wire 6.
Can be stretched so as to surround the periphery of the apparatus main body 1 from outside without loosening, and the adjusting screw 10 is tightened while the hook 9a of the lock member 9 is locked to a fixing member (not shown). By fixing the lock member 9 to the wire 6, the wire 6 can be stretched to apply a predetermined tension thereto. The wire 6 is a lock member 9
The length (the length between the locking member 7 and the locking member 9) can be freely adjusted by loosening the adjusting screw 10 of FIG. It can be stretched around the apparatus main body 1 with a predetermined tension. Also, the adjusting screw 10 of the lock member 9
By adjusting the tightening force, the binding force (locking force) of the lock member 9 to the wire 6 can be arbitrarily adjusted.

In the above, a case has been described in which one wire is stretched so as to surround the periphery of the apparatus body from the outside. However, a plurality of wires are used, and each wire is previously placed on another bottom surface (or wall surface). It is also possible to adopt a configuration in which a plurality of wires are engaged with a fixed fixing member (not shown), and the wires are sequentially engaged with the fixing member so as to surround the apparatus main body from the outside as a whole.

Although the size of the apparatus main body 1 and the distance between the casters 3 and adjusters (not shown) are different depending on the type of office equipment, the lower part of the apparatus main body 1 is provided so that the wire 6 does not come off from the apparatus main body 1. A wire 6 is passed through the fixed bracket 8 (see FIG. 1) and a hole (not shown) opened in the bottom plate 1 a of the apparatus main body 1.

The wire 6 described above, the locking member 7 and the locking member 9 fixed to the wire 6, and the fixing member 4 for fixing the wire 6 via the locking member 7 and the locking member 9 exert an external force. Although the absorbing means is constituted, when an earthquake or excessive shock or vibration occurs, the wire 6 stretched around the apparatus main body 1 of the office equipment generates an excessive impact force or vibration force. , And the excessive impact force and vibration force are absorbed and mitigated by the elongation of the wire 1, and the acceleration applied to the inside of the apparatus main body 1 is also alleviated. Is prevented, and the functions of the internal parts and units are preserved. In this case, although the device main body 1 may move slightly due to the extension of the wire 6, the amount of movement is restricted by the wire 6, so that the device main body 1 largely moves to close the passage or the evacuation route. No such troubles occur.

Since the wire does not extend to an external force less than a predetermined value, the apparatus main body 1 does not move due to a slight impact or vibration in a normal use state, and the office equipment is fixedly installed at a predetermined position. Is done.

Excessive external force that cannot be completely absorbed by elongation of the wire 6 is effectively absorbed by frictional resistance generated by the sliding of the lock member 9 with respect to the wire 6. It can be adjusted appropriately by changing the tightening force of the adjusting screw 10 of the lock member 9 according to the above.

As described above, the external force absorbing means according to the first embodiment absorbs and reduces external force such as impact force and vibration force by extension of the wire 6 when an excessive impact force or vibration force is applied to the wire 6. To protect the main body 1 of the office equipment against excessive shock and vibration, but the wire diameter, element diameter, material, cross-sectional pattern, and twisting method of the wire 6 against a preset external force are adopted. And the like can be appropriately set in design, and as a result, the elongation percentage of the wire 6 can be set to a value that matches the purpose.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a perspective view of the external force absorbing means according to Embodiment 2, and FIG. 6 is an enlarged partial cross-sectional view (an enlarged cross-sectional view of a portion A in FIG. 5) of a lock member constituting the external force absorbing means.
In these drawings, the same elements as those shown in FIGS. 1 to 4 are denoted by the same reference numerals.

The external force absorbing means according to the present embodiment also includes the wire 6 shown in FIG. 5 and the locking member 7 and the locking member 11 fixed thereto, similar to the first embodiment.
One end of the wire 6 is locked to the fixing member 4 (see FIG. 1) via the locking member 7, and is passed through the long hole 8a (see FIG. 1) of the fixing bracket 8 fixed to the lower part of the apparatus main body 1. The caster 3 is disposed between the bottom plate 1 a of the apparatus body 1 and the floor 2.
(And an adjuster (not shown)) so as to surround the periphery of the apparatus main body 1 from the outside in a state of contact with the same, and a distal end portion thereof is locked to a fixing member similar to the fixing member 4 via a lock member 11. Have been.

Thus, in the present embodiment, the configuration of the lock member 11 is different from that of the lock member 9 according to the first embodiment.

That is, the lock member 11 according to the present embodiment
Has a housing 12 integrally provided with a hook portion 12a, and a lid member 13 screwed to an outer periphery of an end of the housing 12, and an elastic body attaching portion 14 is provided at a central portion of the lid member 13. . Further, through holes 12a and 14a are formed concentrically at the respective center portions of the housing 12 and the elastic body mounting portion 14, and the wire 6 is inserted into both the through holes 12a and 14a.
Has been passed.

A plurality of elastic members 15 are attached to the outer peripheral portion of the elastic member attaching portion 14, and a part (free end) of each elastic member 15 is bent to the left in FIG. The tapered portion 15a is narrowed down. The tip of each elastic body 15 is in contact with and engaged with the wire 6.

Also in the external force absorbing means according to the present embodiment having the lock member 11 configured as described above, one end of the wire 6 serves as the locking member 7 as in the first embodiment (see FIG. 1). The wire 6 is passed through the fixing bracket 8 and the bottom plate 1a of the apparatus main body 1 is locked.
And the floor 2, and is stretched so as to surround the periphery of the apparatus main body 1 from the outside in a state of abutting on the casters 3 (and adjusters (not shown)). When the wire 6 is pulled in the direction of the arrow in FIG. 6 in a state where the wire 6 is hooked on a fixing member (not shown), the wire 6 passes through the tapered portion 15 a of the elastic body 15 and moves in the same direction. Then, when the pulling of the wire 6 is stopped, the distal end portion of the elastic body 15 bites into the wire 6 and the movement of the wire 6 in the opposite direction (the direction indicated by the opposite arrow in FIG. 6) is prevented. Fixed state (locked state)
As a result, a predetermined tension is applied to this.

Thus, even if an earthquake or excessive shock or vibration occurs, the lock member 11 keeps the wire 6 in a locked state with the wire 6 locked to a fixing member (not shown). The wire 6 stretched around the device main body 1 receives an excessive impact force or vibration force via the device main body 1 and extends, and the excessive impact force or vibration force is absorbed and reduced by the extension of the wire 1, The same effects as in the first embodiment can be obtained.

Also in this embodiment, the wire 6
The excessive external force that cannot be absorbed by the elongation of the wire 6 is effectively absorbed by the frictional resistance generated by the sliding of the lock member 11 with respect to the wire 6.

<Third Embodiment> Next, a third embodiment of the present invention will be described with reference to FIGS. 7 is a perspective view of the external force absorbing means according to the third embodiment, FIG. 8 is a sectional view showing details of the configuration of a lock member of the external force absorbing means, and FIG. 9 is a sectional view showing a modification of the lock member. In these figures, the same elements as those shown in FIGS. 1 to 4 are denoted by the same reference numerals.

The external force absorbing means according to the present embodiment comprises the wire 6 shown in FIG. 7, the locking member 7 and the locking member 16 fixed thereto, and the fixing member 4 fixed on the floor. However, a coil spring 17 is provided in a portion of the wire 6 near the lock member 16.

Thus, in the external force absorbing means according to the present embodiment, one end of the wire 6 is locked to the fixing member 4 via the locking member 7 as in the first embodiment (see FIG. 1). It is arranged between the bottom plate 1a of the apparatus main body 1 and the floor 2 through a long hole 8a of a fixing bracket 8 fixed to the lower part of the apparatus main body 1, and is applied to a caster 3 (and an adjuster (not shown)). It is stretched so as to surround the periphery of the apparatus main body 1 from the outside in a contact state, and its end is locked to a fixing member (not shown) similar to the fixing member 4 via the lock member 16. The wire 6 has its slack removed by a coil spring 17 and a predetermined tension is always applied to it.

Further, the lock member 16 appropriately adjusts the length of the wire 6 (the length between the locking member 7 and the lock member 16) and the locking force for locking the wire 6 according to the size and weight of the apparatus body 1. The wire spring 6 is used in combination with the coil spring 17 to absorb the slack of the wire 6 due to the contraction of the coil spring 17 as described above.
Therefore, it is possible to always secure appropriate tension.

Here, the structure and operation of the lock member 16 will be described with reference to FIG.

The lock member 16 has a housing 18 integrally provided with a hook portion 18a and an adjustment knob 19 screwed into the housing 18. One end of the adjustment knob 19 facing the housing 18 has an elastic body. 20 are integrally formed. Through holes 18b and 19a are formed concentrically at the respective center portions of the housing 18 and the adjustment knob 19, and the wire 6 passes through these through holes 18b and 19a.

The elastic body 20 formed integrally with the adjusting knob 19 is formed with a tapered portion 20a which is bent at an angle θ shown in the figure and narrowed to the right in FIG. 20a is swingable about a bending point, and its tip is pressed against a wall 18c in the housing 18. A plurality of lock balls 21 are accommodated in the wedge-shaped space surrounded by the elastic body 20 so as to sandwich the wire 6, and the lock balls 21 are urged by a compression spring 22 to taper the elastic body 20. Part 2
0a is in contact with light pressure.

Thus, the lock member 1 having the above configuration
When the wire 6 is pulled in the direction of the arrow (rightward) in FIG. 8 at 6, the lock ball 21 moves in the same direction following the movement of the wire 6 and bites between the tapered portion 20 a of the elastic body 20 and the wire 6. Then, tighten the wire 6 to lock it. The locking force of the lock member 16 at this time is adjusted by adjusting the tightening amount of the adjustment knob 19 to adjust the elastic body 20.
Is adjusted by changing the angle θ of the tapered portion 20a. Here, the following relationship generally holds between the locking force, the tightening amount of the adjustment knob 19, and the angle θ of the tapered portion 20a of the elastic body 20.

That is, as the tightening amount of the adjustment knob 19 is smaller, the angle θ of the tapered portion 20a of the elastic body 20 is smaller, and the locking force is larger. However, this relationship is established in a state where the lock ball 21 does not hit the wall 18c in the housing 18.

On the other hand, when the wire 6 is pulled in the opposite direction (to the left in FIG. 8), the lock ball 21 is dragged by the wire 6 and moves in the same direction.
At a distance from Oa, the tightening of the wire 6 is released, so that the wire 6 can freely move to the left in FIG.

As described above, the lock member 16 locks the wire 6 when the wire 6 is pulled rightward in FIG. 8, and releases the lock when the wire 6 is pulled leftward. Therefore, the operator can appropriately adjust the length of the wire 6 (the length between the locking member 7 and the locking member 16) and the tension applied to the wire 6.

Further, the locking force of the wire 6 can be appropriately adjusted according to the weight of the apparatus main body 1. For example,
When the weight of the apparatus main body 1 is large, the locking force can be increased to such an extent that an impact on the apparatus main body 1 due to an earthquake or the like does not exceed an allowable range. Can be suppressed to a predetermined amount or less.

In the lock member 16 shown in FIG. 8, the lock force is adjusted by changing the angle θ of the tapered portion 20a of the elastic body 20.
The locking force can also be adjusted by making the force urging 1 toward the tapered portion 20a variable. FIG. 9 shows an example of a lock member capable of adjusting the lock force by making the force for biasing the lock ball to the tapered portion variable.

The lock member 23 shown in FIG.
A housing 24 formed integrally with the housing 4a and tapered toward the right in FIG. 9, an adjustment knob 25 screwed to the housing 24 so as to advance and retreat, and a wedge-shaped space formed in the housing 24 are formed. A plurality of stored lock balls 21
And a compression spring 22 for urging the lock ball 21 against the tapered portion 24b on the inner circumference of the housing 24. The lock member 23 includes a compression spring 22 for adjusting the tightening amount of the adjustment knob 25. The length (spring force) of the lock ball 21 is changed, so that the force for biasing the lock ball 21 to the tapered portion 24b of the housing 24 is made variable. At this time, the following relationship is established between the locking force, the tightening amount of the adjustment knob 25, and the force (spring force) for urging the lock ball 21 against the tapered portion 24b.

That is, as the tightening amount of the adjustment knob 25 increases, the length of the compression spring 22 decreases, and the force for urging the lock ball 21 toward the tapered portion 24b increases, and the locking force increases. The lock member 23 shown in FIG. 9 is different from the lock member 16 shown in FIG. 8 in that the locking force increases when the adjustment knob 25 is tightened. However,
The handling method when the worker installs the apparatus main body using the external force absorbing means is exactly the same as that when the lock member 16 shown in FIG. 8 is used.

The external force absorbing means according to the present embodiment provides an impact force by the extension of the wire 6 and the sliding of the lock member 16 (23) when an external force such as an excessive impact or vibration is applied to the wire 6. And vibration force can be absorbed and alleviated, so that the same effects as those obtained in the above-described embodiment can be obtained, and the wire diameter, wire diameter, material, cross-sectional pattern of the wire 6 with respect to a preset external force can be obtained. , The twist method, the spring constant of the coil spring 17 and the like can be appropriately set in design, and as a result, the elongation percentage of the wire 6 can be set in accordance with the purpose.

When the external force absorbing means according to the present embodiment is used, the locking force of the locking member 16 (23) can be appropriately adjusted by the adjusting knob 19 (25) to meet the purpose. By incorporating the coil spring 17 into the wire 6, appropriate tension and tension can be applied to the wire 6.

By the way, the wire has a property that once it is stretched, it does not return to its original length. This is because when the wire is tensioned, the twist of the wire remains untwisted. If a strong impact is applied to the device body even once, the wire will stretch and remain loose. Then, the next time a shock is applied to the device body,
Since the device main body can move freely within the range of extension of the wire, the device main body may collide with the wire in a state where the movement of the device main body is accelerating, and may give a strong impact to the wire. As a result, there is a possibility that excessive elongation or cutting of the wire may be caused.

However, as in the present embodiment, the wire 6
When the coil spring 17 is combined, the slack of the wire 6 is absorbed by the contraction of the coil spring 17, and the wire 6 is always given appropriate tension and tension as described above.

The external force absorbing means according to the present embodiment includes a wire 6 and a coil spring 17, a locking member 7 and a locking member 1
6 (23) and the fixing member 4 make it simple and compact, so that handling, including installation of office equipment, is improved.

Fourth Embodiment Next, a fourth embodiment of the present invention will be described with reference to FIGS. 10 is a perspective view of the external force absorbing means according to Embodiment 4, FIG. 11 is a side sectional view of a one-way drum with a torque limiter function (a sectional view taken along line BB of FIG. 12), and FIG.
2 is a sectional view taken along line CC of FIG. 11, and FIG.
FIGS. 9A and 9B are diagrams showing a dynamic model using the external force absorbing means according to the third embodiment. In these figures, the same elements as those shown in FIGS.

The external force absorbing means according to this embodiment is similar to that shown in FIG.
As shown in FIG. 2, the wire 6 includes a wire 6, a locking member 7 fixed to one end of the wire 6, a fixing member 4 fixed on the floor 2, and a one-way drum 26 with a torque limiter function. The other end of the wire 6 is wound around a one-way drum 26.

Thus, in the external force absorbing means according to the present embodiment, one end of the wire 6 is locked to the fixing member 4 via the locking member 7 as in the first embodiment (see FIG. 1). It is arranged between the bottom plate 1a of the apparatus main body 1 and the floor 2 through a long hole 8a of a fixing bracket 8 fixed to the lower part of the apparatus main body 1, and is applied to a caster 3 (and an adjuster (not shown)). It is stretched so as to surround the periphery of the apparatus main body 1 from the outside in a state where it is in contact with the main body 1.
The wire 6 is wound around the one-way drum 26 fixed in the vicinity of the one-way drum 26. The wire 6 is wound by the automatic winding function of the one-way drum 26 (the same as the cord winding function of the vacuum cleaner) to remove slack. The required tension is applied to this.

In the external force absorbing means according to the present embodiment, excessive shock and vibration applied to the apparatus main body 1 of the office equipment are absorbed to some extent by the extension of the wire 6. The impact and vibration that cannot be completely absorbed by the one-way drum 26 are absorbed by the rotation of the one-way drum 26. In this case, since the elongation of the wire 6 due to the impact or vibration applied to the main body device 1 is automatically taken up by the one-way drum 26, a constant tension is always secured to the wire 6. In addition, by the automatic winding function of the one-way drum 26, the length of the wire 6 when the main body device 1 of the office equipment is installed on the floor 2 using the external force absorbing means according to the present embodiment is arbitrarily adjusted. be able to.

Here, the structure and operation of the one-way drum 26 with the torque limiter function will be described with reference to FIGS.

One-way drum 2 with torque limiter function
6 has a shaft 27 fixed vertically on the floor 2;
A cylindrical inner ring 28 is externally fitted to the shaft 27, and the inner ring 28
Is fixed to the shaft 27 by a key 29.

An outer race 30 constituting a winding drum is rotatably supported by a plurality of needle rollers 31 and is externally held on the inner race 28. The wire 6 is wound around the outer periphery of the outer race 30. One end of the wire 6 is attached to the outer periphery of the outer race 30 by a screw 32. Further, a plurality of concave grooves 30a are formed in the inner peripheral portion of the outer ring 30.
Each of the needle rollers 31 is urged by a spring 33 to abut against a tapered surface that forms a part of each of the concave grooves 30a by light pressure. The outer ring 30
As shown in FIG. 12, a wedge-shaped gap whose width gradually changes in the circumferential direction is formed between each groove 30a formed in the inner ring 28 and the outer peripheral surface of the inner ring 28. Are urged in one direction by a spring 33 and stored.

By the way, the outer ring side of the shaft 27 and the inner ring 2
A spirally wound mainspring 34 is provided below the outer ring 8 and the outer ring 30. One end of the mainspring 34 is fixed to the inner ring 28, and the other end is fixed to the outer ring 30. Then, the outer ring 30 is urged by the mainspring 34 in the clockwise direction in FIG. 12 (the direction in which the wire 6 is wound up). As shown in FIG. 12, a part 30b of the outer race 30 is cut out, and a screw 3 connecting the cutout 30b is formed.
By turning the dial 5 to change the diameter of the outer ring 30, the tightening force of the outer ring 30 is adjusted.

In the one-way drum 26 with the torque limiter function configured as described above, the wire 6 is
When the outer ring 30 is rotated in the counterclockwise direction by pulling in the direction of the arrow 2, the needle roller 31 bites into the narrow portion of the wedge-shaped gap, so that the outer ring 30 is further prevented from rotating and locked. The limiter force at this time is adjusted by turning the screw 35 to change the tightening force of the outer ring 30.

On the other hand, when the outer ring 30 is rotated in the opposite direction (clockwise in FIG. 12), the needle roller 31 is separated from the wedge-shaped gap to allow the outer ring 30 to rotate in the same direction. 6 can be rotated with low torque. Further, as described above, since the outer ring 30 is constantly urged clockwise in FIG. 12 (the direction in which the wire 6 is wound up) by the mainspring 34, when the wire 6 becomes loose, the outer ring 30 is moved by the mainspring 34 as shown in FIG. Turn clockwise of wire 6
Absorbs slack.

Thus, the external force absorbing means according to the present embodiment has the ability to absorb shocks and vibrations as in the third embodiment, but when the shocks or vibrations are repeatedly applied to the apparatus body of the office equipment. However, a certain shock and vibration absorbing ability can be exhibited. Here, the mechanical difference between the third embodiment and the external force absorbing means according to the fourth embodiment is shown in FIG.
This will be described using the dynamic models shown in FIGS. 3 (a) and (b).

FIG. 13A shows a dynamic model using the external force absorbing means according to the fourth embodiment.
(B) shows a dynamic model using the external force absorbing means according to the third embodiment.

In FIG. 13, 1 is the office equipment main body, 2 is a floor surface, 3 is a caster, 6 is a wire, 36 is a spring for absorbing the extension of the wire 6, and 37 is a friction damper that functions only in the extension direction of the wire 6. This corresponds to the lock function of the lock member 16 (23) in the third embodiment or the limiter function of the one-way drum 26 with the torque limiter function in the fourth embodiment.

In the dynamic model shown in FIG. 13B corresponding to the third embodiment, when a rightward impact in the figure is applied to the office equipment main body 1, the impact force is absorbed by the spring 36, the friction damper 37 and the wire 6. You. At this time, the wire 6 is extended by the impact force, and the extension is absorbed by the spring 36. However, if the office equipment main body 1 is returned to the original position after the wire 36 has been once stretched, the contraction force of the spring 36 is weakened by an amount corresponding to the absorption of the wire 6, so that the spring 36 will not be used when the next impact is applied. Shock absorption is weakened.

On the other hand, in the dynamic model shown in FIG. 13A corresponding to the fourth embodiment,
To the right in the figure, the shock is applied to the friction damper 3
Absorbed by 7 and wire 6. At this time, FIG.
The wire 6 elongates similarly to the dynamic model shown in FIG. 2B, but the elongation is absorbed by the spring 36. For this reason, the contraction force of the spring 36 is weakened by the amount of absorption of the elongation of the wire 6.

However, in the dynamic model shown in FIG. 13A corresponding to the fourth embodiment, the friction damper 37
And the wire 6 absorbs the shock, so that the shock absorbing ability does not change even if a new shock is applied after the office equipment body 1 is returned to the original position.

In the above, if the office equipment main body 1 is installed on the floor 2 using the external force absorbing means according to the present embodiment, the excessive impact and vibration applied to the office equipment main body 1 will be affected by the extension of the wire 6. The rotation of the one-way drum 26 with the torque limiter function is effectively absorbed and mitigated, but the one-way drum 26 with the torque limiter function is easily connected to the fixing member 4 with a larger size than the lock member 16 (23) shown in the third embodiment. Is located elsewhere,
There is a problem that a relatively large space is required under the office equipment body 1.

However, if the external force absorbing means according to the present embodiment is used, there is obtained an advantage that even if the office equipment body is repeatedly subjected to shocks and vibrations, a constant shock and vibration absorbing ability is exhibited. Therefore, the external force absorbing means according to the present embodiment is particularly effective when there is room in the lower surface of the office equipment main body and when importance is placed on durability.

<Fifth Embodiment> Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 14 is a perspective view showing the external force absorbing means according to the fifth embodiment of the present invention in a sectional view of a lock member. In this figure, the same elements as those shown in FIG. I have.

The external force absorbing means according to the present embodiment is similar to the external force absorbing means according to the third embodiment in that the wire 6
And a locking member 7 and a locking member 38 fixed thereto, and a fixing member (not shown) fixed on the floor surface. Unlike the third embodiment, a coil spring is incorporated in the wire 6. Not.

The lock member 38 differs from the lock member 16 (see FIG. 8) shown in the third embodiment in the following point. That is, the adjustment knob 39 of the lock member 38 is extended to form a cylindrical guide sleeve 39a,
A spring seat 41 fixed to the end of the wire 6 by a screw 40 is slidably fitted in the guide sleeve 39a. The spring seat 41 is a compression spring compressed in the guide sleeve 39a. 42 is urged in the direction of the arrow in FIG. 14 (the direction in which the wire 6 is stretched). The other configuration of the lock member 38 is the same as that of the lock member 16 shown in the third embodiment.

Thus, in the external force absorbing means according to the present embodiment, similarly to the first embodiment (see FIG. 1), one end of the wire 6 is locked to the fixing member 4 via the locking member 7. It is arranged between the bottom plate 1a of the apparatus main body 1 and the floor 2 through a long hole 8a of a fixing bracket 8 fixed to the lower part of the apparatus main body 1, and is applied to a caster 3 (and an adjuster (not shown)). It is stretched so as to surround the periphery of the apparatus main body 1 from the outside in a state of being in contact therewith, and its end is locked to a fixing member similar to the fixing member 4 via a lock member 38,
The wire 6 is connected to a compression spring 4 provided on a lock member 38.
2, the slack is removed and a predetermined tension is always applied.

Therefore, if the office equipment main body 1 is installed on the floor 2 using the external force absorbing means according to the present embodiment, excessive shock and vibration applied to the office equipment main body 1 will be
And the frictional resistance generated by the sliding of the lock member 38 effectively absorbs and mitigates the shocks and vibrations of the external force absorbing means even when the office equipment body 1 is repeatedly subjected to shocks and vibrations, as in the fourth embodiment. The absorption capacity does not change, and a constant shock and vibration absorption capacity is exhibited.

However, the external force absorbing means according to the present embodiment uses the compression spring 42 and the guide sleeve 3
Due to the addition of 9a, there is a problem that the lock member 38 becomes large.

However, if the external force absorbing means according to the present embodiment is used, there is an advantage that a constant shock and vibration absorbing ability is exhibited even if the office equipment body 1 is repeatedly subjected to shock and vibration as described above. Therefore, the external force absorbing unit according to the present embodiment is particularly effective when there is a space margin on the lower surface of the main body of the office equipment and when emphasis is placed on durability.

[0083]

As is apparent from the above description, according to the present invention, when an earthquake or excessive shock or vibration occurs, the wire stretched around the main body of the office equipment becomes excessively large. Receiving strong shock and vibration forces through the device body,
Excessive shock and vibration forces are absorbed and mitigated by the elongation of the wire, and the acceleration applied to the inside of the device body is also moderated, so that the device body can be prevented from falling and the unit can be prevented from falling off, and internal components and The effect that the function of the unit is maintained is obtained.

Further, according to the present invention, an effect is obtained that an excessive external force that cannot be completely absorbed by the wire is absorbed by frictional resistance generated by sliding of the lock member.

[Brief description of the drawings]

FIG. 1 is a side view showing an installation structure of office equipment according to the present invention.

FIG. 2 is a perspective view of an external force absorbing unit according to Embodiment 1 of the present invention.

FIG. 3 is a partial perspective view showing a structure for fixing a locking member constituting the external force absorbing means to a wire according to Embodiment 1 of the present invention.

FIG. 4 is an exploded perspective view of a lock member constituting the external force absorbing means according to the first embodiment of the present invention.

FIG. 5 is a perspective view of an external force absorbing unit according to Embodiment 2 of the present invention.

FIG. 6 is an enlarged partial sectional view (an enlarged sectional view of a portion A in FIG. 5) of a lock member constituting an external force absorbing means according to Embodiment 2 of the present invention.

FIG. 7 is a perspective view of an external force absorbing unit according to Embodiment 3 of the present invention.

FIG. 8 is a sectional view of a lock member constituting an external force absorbing unit according to Embodiment 3 of the present invention.

FIG. 9 is a cross-sectional view illustrating a modification of the lock member that constitutes the external force absorbing unit according to Embodiment 3 of the present invention.

FIG. 10 is a perspective view of an external force absorbing unit according to Embodiment 4 of the present invention.

FIG. 11 is a side sectional view (a sectional view taken along line BB of FIG. 12) of a one-way drum with a torque limiter function that constitutes an external force absorbing unit according to a fourth embodiment of the present invention.

FIG. 12 is a sectional view taken along line CC of FIG. 11;

FIG. 13 is a diagram showing a dynamic model using external force absorbing means according to Embodiments 3 and 4 of the present invention.

FIG. 14 is a perspective view showing an external force absorbing unit according to a fifth embodiment of the present invention in a cross section of a lock member.

FIG. 15 is a front sectional view of the copying machine.

FIG. 16 is a perspective view showing a state of the copying machine when an earthquake occurs or when excessive impact or vibration is applied.

FIG. 17 is a partial side view of a lower part of office equipment showing a conventional example of an installation structure of office equipment (copier).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Device main body 2 Floor surface 4 Fixing member 6 Wire 7 Locking member 9, 16, 23, 28 Lock member 21 Lock ball (Lock member) 26 One-way drum with torque limiter function (Lock member)

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Junichi Sata 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (72) Inventor Hisashi Otaka 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Non-corporation (72) Inventor Kazuka Chihisa 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (56) References JP-A-61-184239 (JP, A) JP-A-48-7166 (JP, A) JP-A-6-249256 (JP, A) JP-A-6-288073 (JP, A) JP-A-4-66436 (JP, U) JP-A-5-1332074 (JP, U) 2-81944 Kaikai (JP, U) Shokai 59-151702 (JP, U) Heikai 3-4949 (JP, U) Heikai 3-68653 (JP, U) (58) Fields surveyed ( Int.Cl. ⁷ , DB name) F16F 7/00 F16F 15/04 G12B 9/08 G03G 15/00

Claims (1)

(57) [Claims] 1. A fixing member fixed to a floor or a wall,
A wire extending under an external force equal to or greater than a predetermined value;
Attached to one end of the gear and locked to the fixing member
A locking member and one of the wires held by the wire
To regulate the relative movement of
If a tension higher than the value is applied, there is no slip between the wire
Using external force absorbing means including a locking member
An installation structure of office equipment, wherein one end of a wire of the external force absorbing means is connected to the holding member through the locking member.
And fix the wire to the fixing member.
Office machine with a part of administrative equipment
The lower part of the vessel is stretched so as to surround it from the outside, and the wire
The other end of the floor or wall or the front through the lock member
It is characterized by being locked to the fixing member
Office equipment installation structure using external force absorbing means.