JP2014100267A - Overturn suppressing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an overturn suppressing tool capable of corresponding to earthquake countermeasures and overturn prevention.SOLUTION: An overturn suppressing tool (16) comprises: a support portion (2) supported by an installation tool (U); and a supported member (6) having a first screw portion (7) and supported by the support portion (2). With respect to a leg member (11) having a second threaded portion (11a), the first screw portion (7) is screwed into the second threaded portion (11a). In this case, the leg member (11) contacting an installation face (12) for preventing the overturn of the installation tool (U) is mounted on the supported member (6). In the case where the first screw portion (7) is screwed into a third screw portion (13) arranged in the installation surface (12), the installation tool (U) is fixed on the installation face (12).

Description

  The present invention relates to a tipping suppression tool.

  To prevent the installation tool from overturning when the installation surface such as the floor or the top of the desk vibrates due to an earthquake or the like with respect to the installation device installed in the house such as an image forming apparatus such as a printer or furniture. With respect to this technique, the techniques described in Patent Documents 1 and 2 below are conventionally known.

  Japanese Patent Application Laid-Open No. 2011-10691 as Patent Document 1 describes a fixture (A) for fixing a support leg (B) having a pedestal (1) and a vertical axis (2). The fixture (A) described in Patent Document 1 includes a bottom plate (10) that is supported on the floor surface via an adhesive mat (30) and that is formed in a U shape that surrounds the pedestal portion (1). A U-shaped vertical shaft insertion portion (22) through which the vertical shaft (2) passes is supported on the upper surface of the bottom plate (10).

  Japanese Utility Model Registration No. 314003 as Patent Document 2 describes a technique of fixing a twin-wheel caster (3) supported on the bottom of an installation device (2) with a vibration damping device (4). The vibration damping device (4) has a holding plate (5, 6) that sandwiches the turning shaft (3c) of the twin-wheel caster (3). The sandwiching plates (5, 6) are supported on the extension plate (7) via screws (13, 15), and the extension plate (7) is supported via an adhesive cushion (14). Further, in the configuration described in Patent Document 2, a plurality of twin wheel casters (3) are arranged at the bottom of the installation device (2), and the vibration control device (4) faces each other from the outside of the installation device (2). It is mounted so as to be sandwiched, and an extending plate (7) is disposed on the outside.

JP 2011-10691 A ("0021" to "0027", FIGS. 1 to 5) Utility Model Registration No. 312003 (FIGS. 1 and 2)

  An object of the present invention is to make it possible to cope with earthquake countermeasures and fall prevention.

In order to solve the technical problem, the overturn suppressor of the invention according to claim 1 is:
A support portion supported by the installation tool;
A supported member having a first screw part and supported by the support part;
With
An installation surface on which an installation tool is installed when the first screw part is screwed into the second screw part with respect to a leg member having a second screw part meshing with the first screw part. The leg member that prevents the installation tool from overturning in contact with the mounted part is attached to the supported part,
When the first screw portion is screwed into the third screw portion with respect to the third screw portion arranged on the installation surface and meshing with the first screw portion, the installation tool is Fixed to the installation surface,
It is characterized by that.

The invention according to claim 2 is the overturning suppressor according to claim 1,
A fourth screw portion provided on the support portion and meshing with the first screw portion;
A contact portion provided on the support portion;
When provided on the supported member and disposed at a position on the support portion side with respect to the first screw portion, and opposed to the fourth screw portion, the fourth screw portion A facing portion that is opposed with a gap,
A contacted part provided on the supported part and capable of contacting the contact part;
With
When the leg member is attached to the supported part, the first screw part is screwed into the fourth screw part, and the first screw part is inserted into the fourth screw part. It is possible to adjust the height of the support part with respect to the installation surface by adjusting the amount of screwing,
When the first screw portion is screwed into the third screw portion, the first screw portion is detached from the fourth screw portion, and the opposing portion has a gap between the fourth screw portion and the fourth screw portion. It is possible to bring the contacted portion into contact with the contact portion by adjusting the amount of the first screw portion to be screwed with respect to the third screw portion. Features.

According to invention of Claim 1, it can respond to an earthquake countermeasure and fall prevention.
According to the second aspect of the present invention, the height of the support portion relative to the installation surface can be adjusted by adjusting the amount of screwing the first screw portion, and the contacted portion can be brought into contact with the contact portion. .

FIG. 1 is an overall explanatory view of an image forming apparatus according to a first embodiment. FIG. 2 is an enlarged view of a main part of the toner image forming apparatus portion of FIG. FIG. 3 is an explanatory diagram of a state in which the overturning suppression tool is mounted on the image forming apparatus of Embodiment 1 in a state of suppressing overturning. FIG. 4 is an explanatory diagram of a state in which the overturning suppressor is attached to the image forming apparatus of Embodiment 1 in a state of earthquake countermeasures. 5 is an enlarged view of a main part of the overturning suppressor of FIG. 3, FIG. 5A is an enlarged view of the main part in the state shown in FIG. 3, and FIG. 5B is an enlarged view of the main part in the state shown in FIG.

Next, specific examples of embodiments of the present invention (hereinafter referred to as examples) will be described with reference to the drawings, but the present invention is not limited to the following examples.
In order to facilitate understanding of the following description, in the drawings, the front-rear direction is the X-axis direction, the left-right direction is the Y-axis direction, the up-down direction is the Z-axis direction, and arrows X, -X, Y, -Y, The direction indicated by Z and -Z or the indicated side is defined as the front side, the rear side, the right side, the left side, the upper side, the lower side, or the front side, the rear side, the right side, the left side, the upper side, and the lower side, respectively.
In the figure, “•” in “○” means an arrow heading from the back of the page to the front, and “×” in “○” is the front of the page. It means an arrow pointing from the back to the back.
In the following description using the drawings, illustrations other than members necessary for the description are omitted as appropriate for easy understanding.

FIG. 1 is an overall explanatory view of an image forming apparatus according to a first embodiment.
In FIG. 1, a printer U that is an example of an image forming apparatus according to the first exemplary embodiment and that is an example of an installation tool includes a printer main body U <b> 1 that is an example of an apparatus main body. A first discharge tray TRh as an example of a first medium discharge unit is provided on the upper surface of the printer body U1. An operation unit UI is provided on the upper surface of the right part of the printer main body U1. The operation unit UI includes a display unit (not shown). The operation unit UI is configured so that a user can perform an input operation.
A personal computer PC as an example of an image information transmission device is electrically connected to the printer U of the first embodiment.

The printer U includes a controller C as an example of a control unit. The controller C can receive electrical signals such as image information and control signals transmitted from the personal computer PC. The controller C is configured to be able to output a control signal to the operation unit UI and the electric circuit E. Further, the controller C is electrically connected to the write circuit DL.
The writing circuit DL outputs a drive signal to an exposure device ROS as an example of a writing device in accordance with the input information. The exposure machine ROS is configured to be able to output a laser beam L as an example of writing light in accordance with an input signal.

FIG. 2 is an enlarged view of a main part of the toner image forming apparatus portion of FIG.
1 and 2, a photoconductor PR as an example of an image carrier is disposed on the left side of the exposure machine ROS. The photoconductor PR of Example 1 is supported so as to be rotatable in the direction of the arrow about the rotation axis PRa. The photoconductor PR is irradiated with a laser beam L in the writing area Q1.
Around the photoconductor PR, along the rotational direction of the photoconductor PR, a charging roll CR as an example of a charging member, a developing device G, and a photoconductor cleaner CL as an example of a cleaner for an image carrier. Is arranged.
In the printer U according to the first exemplary embodiment, the photosensitive member PR, the charging roll CR, the developing device G, and the photosensitive member cleaner CL are integrated into a unit that can be attached and detached. That is, the photoconductor PR, the charging roll CR, the developing device G, and the photoconductor cleaner CL are configured to be detachable from the printer body U1 as a process unit U2.

A charging voltage is applied from the electric circuit E to the charging roll CR.
The developing device G includes a developing container V that accommodates toner as an example of a developer. Inside the developing container V, a developing roll Ga as an example of a developer holding body is rotatably supported. The developing roll Ga is disposed to face the photoreceptor PR in the developing area Q2.
Further, a developing voltage is applied from the power supply circuit E to the developing roll Ga. Further, augers Gb and Gc, which are examples of a developer conveying member, are rotatably supported in the developing container V.

One end of a replenishment path of a toner replenishing device TH1 as an example of a developer replenishing device fixedly supported by the printer U is connected to the developing container V. The other end of the supply path of the toner supply device TH1 is connected to a discharge port TC3 of a toner cartridge TC as an example of a developer container.
In FIG. 3, the toner cartridge TC has a cartridge main body TC1 as an example of a container main body that accommodates toner therein. A toner transport member TC2 as an example of a developer transport member is rotatably supported in the cartridge body TC1. The toner cartridge TC is configured to be detachable by being inserted into and removed from the printer U in the front-rear direction.
The photoconductor PR, the charging roll CR, the exposure machine ROS, the developing device G, and the like constitute a toner image forming apparatus that forms a toner image on the photoconductor PR.

In FIG. 1, a plurality of paper feed trays TR <b> 1 to TR <b> 4 are provided below the printer U as an example of a medium storage unit. The plurality of paper feed trays TR1 to TR4 contain a recording sheet S as an example of a body.
In FIG. 1, rails RL <b> 1 as an example of container guide members are disposed on the left and right sides of the respective trays TR <b> 1 to TR <b> 4. The rail RL1 movably supports the left and right ends of the paper feed trays TR1 to TR4. Accordingly, the paper feed trays TR1 to TR4 are supported by the pair of left and right rails RL1 so as to be able to enter and exit in the front-rear direction.

In FIG. 1, a paper feeding device K is disposed at the upper left of each of the paper feeding trays TR1 to TR4. The paper feeding device K has a pickup roll Rp as an example of a medium take-out member. On the left side of the pick-up roll Rp, a separating roll Rs as an example of a separating member is disposed. The separating roll Rs includes a feed roll as an example of a medium conveying member and a retard roll as an example of a medium separating member.
On the left side of the sheet feeding device K, a sheet feeding path SH1 as an example of a medium transport path is disposed. The conveyance path SH1 extends upward. A plurality of transport rolls Ra as an example of a medium transport member are arranged in the paper feed path SH1. A registration roll Rr, which is an example of a medium transport timing adjustment member, is disposed at the upper end, which is the downstream end of the sheet feed path SH1.

A manual feed tray TR0 as an example of a manual feed unit is mounted on the left side of the printer U. The right end of the manual feed tray TR0 is connected to the left end of a manual feed path SH2 as an example of a manual feed path. The right end of the manual feed path SH2 is connected to the paper feed path SH1.
In FIG. 1, a transfer roll Rt as an example of a transfer device is disposed above the registration roll Rr. The transfer roll Rt faces and contacts the photoconductor PR in the transfer region Q3. Accordingly, the transfer roll Rt according to the first exemplary embodiment rotates following the rotation of the photoconductor PR. A transfer voltage is applied from the power supply circuit E to the transfer roll Rt.

The photoreceptor cleaner CL is disposed on the downstream side of the transfer roll Rt with respect to the rotation direction of the photoreceptor PR. The photoreceptor cleaner CL includes a cleaning blade CL1 as an example of a cleaning member. The cleaning blade CL1 is formed in a plate shape. One end of the cleaning blade CL1 is in contact with the photoconductor PR.
Above the cleaning blade CL1, a cleaner container CL2 as an example of a cleaning container is disposed. The cleaning blade CL1 is supported by the cleaner container CL2. A space in which the developer can be stored is formed in the cleaner container CL2. Inside the cleaner container CL2, a collection auger CL3 as an example of a developer conveying member is rotatably supported. A recovery path CL4 as an example of a developer transport path is supported at the front end of the cleaner container CL2. The recovery path CL4 extends from the photoconductor cleaner CL to the developing device G.

In FIG. 1, a fixing device F is supported above the transfer roll Rt. The fixing device F includes a heating roll Fh as an example of a heat fixing member and a pressure roll Fp as an example of a pressure fixing member. The heating roll Fh and the pressure roll Fp are in contact with each other in the fixing region Q4. Driving is transmitted to the heating roll Fh from a driving source (not shown) to rotate. The heating roll Fh is supplied with electric power for heating a heater (not shown) from the electric circuit E.
The toner image forming device U2, the transfer roll Rt, and the fixing device F constitute an image recording unit U2 + Rt + F that records an image on the sheet S.

Above the fixing device F, a sheet guide F1 as an example of a medium guiding portion is formed. A sheet discharge roll R1 as an example of a medium discharge member is disposed on the right side of the sheet guide F1. A medium discharge port Ha is formed on the right side of the paper discharge roll R1. A first discharge tray TRh is disposed below the medium discharge port.
In FIG. 1, a connection path SH3 as an example of a medium transport path is disposed above the fixing device F and on the left side of the paper discharge roll R1. The connection path SH3 extends to the left from the discharge port Ha.

On the left side surface of the main body U1 of the printer U, a reversing unit U3 as an example of a medium reversing device is supported above the manual feed tray TR0. A reversing path SH4 as an example of a medium transport path is formed inside the reversing unit U3. The upper end of the inversion path SH4 is connected to the left end of the connection path SH3. The lower end of the reversing path SH4 joins the sheet feeding path SH1 on the upstream side of the registration roll Rr.
A second discharge path SH6 as an example of a medium transport path is formed above the reversing unit U3. The second discharge path SH6 has a right end connected to the connection path SH3 and branches off from the inversion path SH4. The left end of the second discharge path SH6 extends to the left side surface of the reversing unit U3. A face-up tray TRh1 as an example of a second discharge unit is supported on the left side surface of the reversing unit U3. Accordingly, the sheet S that has passed through the second discharge path SH6 is configured to be discharged to the face-up tray TRh1.

(Function of image forming apparatus)
In the printer U of the first embodiment having the above configuration, the image information transmitted from the personal computer PC is input to the controller C. The controller C converts the inputted image information into information for forming a latent image at a preset time and outputs it to the writing circuit DL. The exposure machine ROS outputs a laser beam L based on the signal received by the writing circuit DL. The controller C controls operations of the operation unit UI, the writing circuit DL, the power supply circuit E, and the like.
1 and 2, the surface of the photoreceptor PR is charged by a charging roll CR to which a charging voltage is applied. The surface of the photoconductor PR charged by the charging roll CR is exposed and scanned by the laser beam L of the exposure machine ROS at the writing position Q1 to form an electrostatic latent image. The surface of the photoconductor PR on which the electrostatic latent image is formed sequentially passes through the development area Q2 and the transfer area Q3.

In the developing area Q2, the developing roll Ga faces the photoconductor PR. The developing roll Ga rotates while holding the developer inside the developing container V on the surface. Therefore, the electrostatic latent image on the surface of the photoconductor PR is developed into a toner image as an example of a visible image by the toner image held on the surface of the developing roll Ga. The developer inside the developing container V is circulated while being stirred by the augers Gb and Gc.
When the developer inside the developing container V is consumed with the development by the developing roll Ga, the developer is supplied from the toner cartridge TC. That is, according to the consumption amount of the developer, the toner transport member TC2 is rotationally driven to transport the toner in the cartridge body TC1 to the discharge port TC3. The toner discharged from the discharge port TC3 is transported to the developing container V by a replenishment transport member (not shown) in the replenishment path of the cartridge toner replenishing device TH1.

The trays TR1 to TR4 contain sheets S on which images are recorded. The sheets S accommodated in the trays TR1 to TR4 are taken out by the pickup roll Rp of the paper feeding device K. The sheets S taken out by the pickup roll Rp are separated one by one by the separation roll Rs. The sheet S separated by the separating roll Rs is fed to the sheet feeding path SH1. The sheet S in the sheet feeding path SH1 is conveyed toward the registration roll Rr by the conveyance roll Ra.
The sheet S fed from the manual feed tray TR0 is transported to the registration roll Rr through the manual feed path SH2. The sheet S conveyed to the registration roll Rr is conveyed to the transfer area Q3 by the registration roll Rr in accordance with the timing when the toner image on the surface of the photoconductor PR moves to the transfer area Q3.

In the transfer area Q3, the toner image on the surface of the photoconductor PR is transferred to the sheet S passing through the transfer area Q3 by the transfer roll Rt to which the transfer voltage is applied.
In FIG. 2, the photoreceptor PR after passing through the transfer region Q3 is cleaned by removing the toner adhering to the surface by the cleaning blade CL1. The toner removed by the cleaning blade CL1 is collected in the cleaner container CL2. The toner collected in the cleaner container CL2 is conveyed by the collection auger CL3. The toner conveyed by the collection auger CL3 is returned to the inside of the developing container V through the collection path CL4. That is, the developer collected by the photoreceptor cleaner CL is reused by the developing device G.
The photoconductor PR whose surface is cleaned by the photoconductor cleaner CL is charged again by the charging roll CR.

The sheet S on which the toner image is transferred in the transfer area Q3 is conveyed to the fixing area Q4 of the fixing device F in a state where the toner image is not fixed.
In the fixing region Q4, the sheet S is sandwiched between the heating roll Fh and the pressure roll Fp, and the toner image is heated and fixed.
The sheet S on which the toner image is fixed by the fixing device F is guided by the sheet guide F1 and conveyed to the paper discharge roll R1. When the sheet S is discharged to the first discharge tray TRh,
The sheet S sent to the discharge roll R1 is discharged from the discharge port Ha to the first discharge tray TRh.

During double-sided printing, the sheet S on which an image is recorded on the first side rotates the paper discharge roll R1 in a state where the trailing end in the transport direction has passed the sheet guide F1. Accordingly, the sheet S is conveyed to the reversing path SH4 through the connection path SH3. The sheet S conveyed on the reversing path SH4 is conveyed to the registration roll Rr in a state where the front and back sides are reversed. Therefore, the image on the second side is recorded again from the registration roll Rr to the transfer area Q3.
When the sheet S is discharged to the face-up tray TRh1, the sheet S conveyed through the connection path SH3 by the reverse rotation of the discharge roll R1 is carried into the second discharge path SH6. Then, the sheet S conveyed through the second discharge path SH6 is discharged to the face-up tray TRh1.

(Explanation of fall prevention tool)
FIG. 3 is an explanatory diagram of a state in which the overturning suppression tool is mounted on the image forming apparatus of Embodiment 1 in a state of suppressing overturning.
FIG. 4 is an explanatory diagram of a state in which the overturning suppressor is attached to the image forming apparatus of Embodiment 1 in a state of earthquake countermeasures.
5 is an enlarged view of a main part of the overturning suppressor of FIG. 3, FIG. 5A is an enlarged view of the main part in the state shown in FIG. 3, and FIG. 5B is an enlarged view of the main part in the state shown in FIG.

1, 3, and 4, a caster 1 as an example of a wheel member is supported on the bottom of the printer main body U <b> 1 of the first embodiment.
3 to 5, two brackets 2 as an example of a support portion are fixedly supported at the bottom of the printer main body U1 of the first embodiment. The bracket 2 according to the first embodiment is formed in a plate shape that protrudes from the bottom surface of the printer main body U1 to the left and right sides. A circular opening 2 a is formed in the bracket 2. A stopper surface 2 b as an example of a contact portion is formed on the upper surface of the bracket 2.
A nut 3 as an example of a fourth screw portion is supported on the bottom surface of the bracket 2. The screw hole 3 a at the center of the nut 3 is formed with a smaller diameter than the opening 2 a of the bracket 2. A thread groove is formed on the inner peripheral surface of the screw hole 3 a of the nut 3.

The bracket 2 and the nut 3 support a shaft 6 as an example of a supported member. The shaft 6 of Example 1 is formed in a cylindrical shape. A bolt portion 7 as an example of a first screw portion is formed from the upper portion to the lower end of the shaft 6. A screw thread that meshes with the screw hole 3 a is formed on the outer surface of the bolt portion 7. Therefore, the outer diameter of the bolt portion 7 corresponds to the inner diameter of the screw hole 3a and is formed to be thinner than the inner diameter of the opening 2a.
A small diameter portion 8 as an example of a facing portion is formed at the upper end of the bolt portion 7. The small diameter portion 8 is formed in a column shape extending upward. The outer diameter of the small diameter part 8 of Example 1 is formed smaller than the screw hole 3a. Therefore, as shown in FIG. 5B, in a state where the small diameter portion 8 corresponds to the screw hole 3a, a gap is formed between the small diameter portion 8 and the screw hole 3a.

A flange portion 9 as an example of a contacted portion is formed at the upper end of the small diameter portion 8. The flange portion 9 is formed in a disc shape. The outer diameter of the flange portion 9 of Example 1 is set to be larger than the opening 2a.
A foot 11 as an example of a leg member can be attached to and detached from the lower portion of the shaft 6. The foot 11 has an upper outer surface formed in a conical shape and a lower outer surface formed in a cylindrical shape. The foot 11 is formed with a screw hole 11a as an example of a second screw portion. The screw hole 11a of the foot 11 is formed so as to penetrate the foot 11 in the vertical direction. A screw groove that meshes with the bolt portion 7 is formed on the inner peripheral surface of the screw hole 11a.

4 and 5B, an anchor 13 as an example of a third screw portion is installed on a floor surface 12 as an example of an installation surface. The anchor 13 of the first embodiment has a screw hole 13a extending from the floor surface 12 toward the inside of the floor. On the inner peripheral surface of the screw hole 13 a of the anchor 13, a screw groove that meshes with the bolt portion 7 is formed.
The bracket 2, nut 3, shaft 6, and the like constitute the overturn suppressing tool 16 of the first embodiment.

(Operation of the fall-suppressing tool of Example 1)
In the printer U according to the first embodiment having the above-described configuration, as shown in FIG. 1, when the shaft 11 is rotated and the foot 11 is lifted from the floor surface 12, the caster 1 is rotated to move the printer U. is there.
In order to prevent the printer U from overturning, the foot 11 is brought into contact with the floor surface 12 with the bolt portion 7 of the shaft 6 engaged with the screw hole 3a of the nut 3 as shown in FIGS. .
In this state, even if the printer U moves, tilts, or falls, the foot 11 comes into contact with the floor 12 and resists movement or tilting. Therefore, even if the caster 1 rotates and the printer U moves, or a person pushes or an object collides with it and an external force acts on the printer U, the printer U is prevented from falling. Therefore, even in an office or the like where the anchor 13 is not installed on the floor surface 12, the foot 11 can be used to suppress the overturn.

  In addition, in the fall prevention tool 16 of Example 1, it is possible to rotate the shaft 6 and to adjust the screwing amount with respect to the screw hole 3a, 11a of the bolt part 7, the nut 3, and the foot 11. Therefore, when the bolt portion 7 is rotated relative to the nut 3 and the foot 11, the distance between the nut 3 and the foot 11 can be adjusted to an arbitrary length. Therefore, for example, the interval between the nut 3 and the foot 11 can be set so that the caster 1 floats from the floor surface 12. In this case, the movement of the printer U is further effectively suppressed.

4 and 5B, when the anchor 13 is installed on the floor surface 12, the bolt 7 is screwed into the anchor 13 in order to prevent the printer U from toppling over a large vibration such as when an earthquake occurs. In the state, the flange portion 9 is brought into contact with the upper surface of the bracket 2. In this state, the shaft 6 is driven into the floor surface via the anchor 13, and the flange portion 9 contacts the bracket 2 so that the bracket 2 cannot move upward with respect to the floor surface. ing. Therefore, even if a large external force that cannot be suppressed by the foot 11 acts due to an earthquake, the printer U is suppressed from falling.
Therefore, the fall prevention tool 16 according to the first embodiment is configured to be able to cope with both the fall prevention using the foot 11 and the earthquake countermeasure using the anchor 13.

In particular, in the overturn suppressing device 16 of the first embodiment, a gap is set between the small diameter portion 8 formed at the upper end of the bolt portion 7 and the screw hole 3 a of the nut 3. If the small diameter portion 8 is not provided, the bolt portion 7 needs to be screwed into the anchor 13 in a state where the bolt portion 7 is screwed into the screw hole 3a. In this configuration, the shaft 6 is supported with respect to the printer U so as not to move in the surface direction of the floor surface 12. Therefore, when the positions of the bolt part 7 and the anchor 13 are shifted, or when there are manufacturing errors, assembly errors, installation errors, etc., it is difficult to screw the bolt part 7 into the anchor 13. That is, it is necessary to assemble the nut 3 and the bracket 2 with high accuracy, install the anchor 13 with high accuracy, or move the printer U to finely adjust the position.
On the other hand, in the overturn suppression tool 16 of the first embodiment, the small diameter portion 8 has a gap with respect to the nut 3. Therefore, the shaft 6 can move in the surface direction of the floor 12 with respect to the main body U1 of the printer U by the gap. Therefore, when the bolt portion 7 is screwed into the anchor 13, a minute shift between the anchor 13, the bolt portion 7, and the nut 3 can be absorbed by the gap. Therefore, the installation work of the bolt part 7 etc. becomes easy with respect to the anchor 13. Therefore, it is possible to easily perform installation work for the printer U for earthquake countermeasures.

  Further, in the overturn suppressing device 16 of the first embodiment, it is possible to adjust the amount by which the bolt portion 7 is screwed into the anchor 13. Therefore, the flange portion 9 and the bracket 2 can be brought into contact with each other by adjusting the amount by which the bolt portion 7 is screwed, and the flange portion 9 and the bracket 2 can be separated from each other. For example, when an object is dropped between the bottom surface of the printer U and the floor surface, or when it is desired to make a little gap between the printer U and the wall by cleaning or the like, the flange portion 9 and the bracket 2 are separated from each other, It is also possible to bring the printer U into a finely movable state.

(Example of change)
As mentioned above, although the Example of this invention was explained in full detail, this invention is not limited to the said Example, A various change is made in the range of the summary of this invention described in the claim. Is possible. Modification examples (H01) to (H08) of the present invention are exemplified below.
(H01) In the above-described embodiment, the printer as an example of the image forming apparatus is illustrated. However, the present invention is not limited to this, and the present invention can be applied to an image forming apparatus such as a copying machine or a FAX. Further, although the image forming apparatus as an example of the installation tool is illustrated, the present invention is not limited to this, and the present invention can be applied to any configuration having leg members, for example, a cabinet, a desk, a bookshelf, a storage rack, furniture, and the like.

(H02) In the above embodiment, the two fall prevention tools 16 are illustrated as being installed on the left and right sides of the printer U. However, the present invention is not limited to this. For example, the number and the position with respect to the printer U can be arbitrarily changed by arranging them at the four corners of the printer U or using three.
(H03) In the embodiment, it is desirable to provide the caster 1, but the present invention is not limited to this. For example, the caster 1 may be omitted, and the printer U may be supported only by the overturning suppression tool 16 of the embodiment.

(H04) In the above embodiment, it is desirable to provide the small-diameter portion 8, but it can be omitted.
(H05) In the above embodiment, the floor surface is illustrated as an example of the installation surface, but the present invention is not limited to this. For example, the present invention can be applied to any installation surface such as an upper surface of a desk.
(H06) In the above embodiment, a columnar or convex shaft 6 is used as an example of a supported portion, and a configuration in which concave screw holes 3a, 11a, 13a are formed on the nut 3, the foot 11, and the anchor 13 side is illustrated. However, it is not limited to this. It is also possible to reverse the combination of convex and concave.

(H07) In the above embodiment, when the anchor 13 is used, the structure in which the foot 11 is mounted is shown, but the present invention is not limited to this. The foot 11 can be attached to the anchor 13 in a detached state.
(H08) Although the nut 3 is supported by the bracket 2 in the above embodiment, the present invention is not limited to this. For example, the opening 2a of the bracket 2 can be a screw hole 3a.

2 ... support part,
2b ... contact part,
3 ... Fourth screw part,
6 ... Supported member,
7 ... 1st screw part,
8 ... opposite part,
9: contacted part,
11 ... Leg members,
11a ... 2nd screw part,
12 ... installation surface,
13 ... Third screw part,
16 ... Fall prevention tool,
U ... Installation tool.

Claims (2)

A support portion supported by the installation tool;
A supported member having a first screw part and supported by the support part;
With
An installation surface on which an installation tool is installed when the first screw part is screwed into the second screw part with respect to a leg member having a second screw part meshing with the first screw part. The leg member that prevents the installation tool from overturning in contact with the mounted part is attached to the supported part,
When the first screw portion is screwed into the third screw portion with respect to the third screw portion arranged on the installation surface and meshing with the first screw portion, the installation tool is Fixed to the installation surface,
A fall suppressor characterized by that. A fourth screw portion provided on the support portion and meshing with the first screw portion;
A contact portion provided on the support portion;
When provided on the supported member and disposed at a position on the support portion side with respect to the first screw portion, and opposed to the fourth screw portion, the fourth screw portion A facing portion that is opposed with a gap,
A contacted part provided on the supported part and capable of contacting the contact part;
With
When the leg member is attached to the supported part, the first screw part is screwed into the fourth screw part, and the first screw part is inserted into the fourth screw part. It is possible to adjust the height of the support part with respect to the installation surface by adjusting the amount of screwing,
When the first screw portion is screwed into the third screw portion, the first screw portion is detached from the fourth screw portion, and the opposing portion has a gap between the fourth screw portion and the fourth screw portion. It is possible to bring the contacted portion into contact with the contact portion by adjusting the amount of the first screw portion to be screwed with respect to the third screw portion. The overturn suppression tool according to claim 1, characterized in that:

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