JP2001317591A - Anti-vibration support - Google Patents

Abstract

(57) [Summary] [Problem] To quickly converge a lateral shake caused by an inertial force at the time of stopping a movement of a movable body without causing a complicated structure or the like, thereby preventing image reading deviation or the like in an image forming apparatus. Prevent malfunctions. A support pedestal (22) is connected to a lower surface of the copying machine main body (1) of the image forming apparatus so as to be relatively displaceable in a lateral direction, and a supporting trochanter (23) rollable on the support pedestal (22) is connected to the copying machine. An elastic member (24) connected to the lower surface of the main body (1) and absorbing the displacement force of the supporting trochanter (23) is provided. As a result, the inertia force at the time when the movement of the ink carriage 11 is stopped is reduced.
In this case, the supporting trochanter 23 is displaced laterally on the supporting pedestal 22, so that the swing width of the upper portion of the copying machine main body 1 is reduced, and the displacement force of the supporting trochanter 23 is absorbed by the elastic member 24. Thus, the lateral vibration of the copying machine main body 1 is quickly converged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration support applied to an apparatus such as an image forming apparatus in which the position of the center of gravity changes laterally by the movement of a movable body such as an ink carriage.

[0002]

2. Description of the Related Art An image forming apparatus provided with an ink carriage which reciprocates inside, for example, as shown in FIG. After reading the data, the image data is photoelectrically converted by the CCD 104 and supplied as image data to the image forming unit 105 provided at the lower part of the apparatus main body 101. In the image forming unit 105, the ink carriage 1
06 prints on paper by main scanning according to image data while moving in the horizontal direction (main scanning direction). When the ink carriage 106 reciprocates, the position of the center of gravity greatly changes, and the apparatus main body 101 shakes. Therefore, the support state becomes unstable.

For this reason, conventionally, for example, Japanese Patent Application Laid-Open No.
No. 97837 discloses a rubber pedestal (FIG. 4) 108 which is located at each of the four corners on the lower surface of the apparatus main body as an anti-vibration support member. There is disclosed a configuration in which the installation state is stabilized by being absorbed by the cushion action of 108.

[0004]

However, in a configuration in which a rubber pedestal 108 as an anti-vibration support is fixed to the lower surface of the apparatus main body 101 as in the above-mentioned known example, the reciprocation of the ink carriage 106 is stopped. When the inertial force at this time acts on the apparatus main body 101, the portion of the pedestal 108 becomes a fixed end to the installation surface, and a lateral bending occurs on the upper side of the apparatus main body 101. As a result, the scanner unit 102 located above the apparatus main body 101 swings in the F1 direction and then swings back in the F2 direction.
Prolong the time until the swing of 1 converges. If the scanner unit 102 swings during this time, there is a possibility that the reading of the document image will be shifted.

In order to solve such a problem, it is necessary to physically separate the scanner unit 102 and the image forming unit 105 provided with the ink carriage 106 in the apparatus main body 101, or to provide a damper structure between the two. Although it is conceivable, not only is the structure complicated or enlarged, but also the manufacturing cost is increased, and it is difficult to put it to practical use.

The above problem is a problem that generally occurs not only in an image forming apparatus in which an ink carriage is freely movable, but also in an apparatus in which a movable body reciprocates inside.

SUMMARY OF THE INVENTION An object of the present invention is to provide a simple structure, but to quickly converge a lateral shake caused by an inertial force when a movable body stops moving, thereby causing a problem such as an image reading defect in an image forming apparatus. An object of the present invention is to provide an anti-vibration support which can prevent the occurrence of a vibration at low cost.

[0008]

The present invention has the following arrangement as means for solving the above-mentioned problems.

(1) An anti-vibration support provided in a device in which the position of the center of gravity changes laterally as the movable body reciprocates inside, and can be displaced in the lateral direction relative to the lower surface of the device. A supporting pedestal connected to the device, a supporting rotator attached to the lower surface of the device and capable of rolling on the supporting pedestal, and an elastic member disposed on the supporting pedestal and absorbing a displacement force of the supporting trochanter, It is characterized by having.

In this configuration, when the inertia force at the time of stopping the movement of the movable body acts on the device main body, the supporting trowel on the lower surface of the device main body is displaced laterally on the support pedestal. The width is reduced, and the displacement force of the supporting trochanter is absorbed by the elastic member provided on the supporting pedestal side. As a result, the lateral vibration of the apparatus main body is converged early.

Further, as compared with a device in which a damper mechanism or the like is provided between a document reading section and an image forming section of the apparatus main body,
Since the structure is simple and the cost increase is minimized,
It is easy to implement.

(2) In the configuration of (1), a pair of compression coil springs sandwiching the supporting rotator in the moving direction of the movable body can be used as the elastic member.

According to this structure, when the inertia force at the time of stopping the movement of the movable body acts on the apparatus main body, the displacement force of the supporting trochanter is effectively absorbed from both directions by the pair of compression coil springs sandwiching the supporting trochanter. Further, the convergence of the shake of the apparatus main body can be further accelerated.

(3) The support pedestal is arranged outside a range in a moving direction of the movable body.

In this configuration, the inertial force at the time of stopping the movement of the movable body is less likely to act on the image forming apparatus, so that the swing width of the upper portion of the apparatus main body is further reduced.

(4) The rolling direction of the supporting trochanter is set to be the same as the moving direction of the movable body.

In this configuration, when the inertia force at the time of stopping the movement of the movable body acts on the apparatus main body, the supporting trochanter is displaced in the same direction as the inertial action direction, so that the bending of the upper part of the apparatus main body can be effectively suppressed. Function.

(5) The support pedestal has a through-hole formed of a long hole along the moving direction of the movable body, and the support pedestal is inserted into the through-hole and fixed to a lower surface of the apparatus main body by a connecting member. Is connected to the lower surface of the apparatus main body so as to be relatively movable in the moving direction.

In this configuration, when the inertia force at the time of stopping the movement of the movable body acts on the apparatus main body, the moving direction of the supporting trochanter is sufficiently secured by the guide action between the connecting member and the through hole.

[0020]

FIG. 1 is a schematic sectional view showing the configuration of a copying machine equipped with a vibration-proof support according to an embodiment of the present invention. A document reading section 3 and an image forming section 10 are vertically arranged inside the copying machine main body 1. Image reading unit 3
Is disposed below a platen 4 made of a hard transparent glass body attached to the upper surface of the apparatus main body 1. The platen 4
Is openable and closable by a cover 5.

The document reading section 3 includes a scanner unit 9 which is reciprocally movable in a main scanning direction (horizontal direction) indicated by arrows a and b parallel to the lower surface of the document table 3. The scanner unit 9 includes a light source 6 for irradiating the original with light, a mirror 7 for deflecting light reflected from the original, a CCD 8 as a photoelectric conversion element for receiving an optical image from the mirror 7, and the like.

The image forming unit 10 includes an ink carriage 1
1, a guide shaft 12 and a transport roller 13. The ink carriage 11 reciprocates within a predetermined range D along a guide shaft 12 provided with an ink head and an ink tank and arranged in the horizontal scanning direction. Transport roller 13
Transports the sheet in the sub-scanning direction, facing the lower surface of the ink carriage 11.

When the scanner unit 9 moves in the horizontal direction, an original image on the original table 4 is read, and the optical image is photoelectrically converted by the CCD 8 and subjected to predetermined processing in an image processing unit (not shown). Thereafter, the image data is output to the image forming unit 10 as image data. The image forming unit 10 drives the ink head based on the image data while the ink carriage 11 moves in the main scanning direction, and discharges the ink stored in the ink tank onto the paper conveyed by the conveyance rollers 13 to form an image. To form

FIG. 2 is a bottom perspective view of the copying machine. FIG. 3 is a cross-sectional view showing the configuration of the vibration-proof support according to the embodiment of the present invention, which is attached to the bottom surface of the copying machine. At four corners of the bottom surface of the copying machine main body 1, anti-vibration supports 21 according to the embodiment of the present invention are arranged. The anti-vibration support member 21 is connected to the bottom surface of the copying machine main body 1 so as to be relatively displaceable in the lateral direction, and is attached to the bottom surface of the copying machine main body 1 and can roll on the support base 22. A supporting trochanter 23, an elastic member 24 disposed on the supporting pedestal 22 to absorb the displacement force of the supporting trochanter 23, and a fixing member 25 for defining the position of the anti-vibration support 21 on the bottom surface of the copying machine main body 1. And

The support pedestal 22 is formed of a synthetic resin or the like into a rectangular thin housing, and the center of the upper surface thereof is
3 is formed as a recess 22a. On both left and right sides of the recess 22a, there are formed through holes 22b, 22b, which are long holes extending in the moving direction of the ink carriage 11, that is, in the lateral direction. A fixing member 25, such as a stepped screw, inserted into each through hole 22 b is screwed to the bottom surface of the copying machine main body 1 so that the support base 22 is
Are connected to the bottom surface of the copying machine main body 1 so as to be relatively displaceable in the lateral direction.

The supporting trochanter 23 is rotatably supported by a bearing bracket 26 vertically provided on the lower surface of the copying machine main body 1, and has an arrow a which is the same as the moving direction of the ink carriage 11 in the recess 22a. , B (transverse direction). The elastic member 24 is formed of a compression coil spring, and each inner wall 22c, 2 in the left-right direction in the recess 22a.
It is interposed between 2d and supporting trochanter 23, respectively.

Next, the operation of the anti-vibration support 21 having the above configuration will be described below.

In the image forming section 10, the ink carriage 11 moves in the horizontal direction according to the image data (main scanning).
Each time the copying machine is stopped, the inertia force due to the sudden stop acts on the copying machine body 1. At this time, since the lower surface of the copying machine main body 1 is displaced laterally on the support pedestal 22 via the supporting trochanter 23, the copying machine main body 1 is set with the support pedestal 22 as a base end.
Does not bend significantly. That is, when the copying machine main body 1 is subjected to the inertial force and is displaced via the supporting trochanter 23, the swing width on the upper side thereof is considerably small. Moreover, at this time, the lateral displacement force of the supporting trochanter 23 is absorbed by the respective spring forces of the pair of elastic members 24, 24. For this reason, the lateral shake of the copying machine main body 1 is converged early, and the swinging of the scanner unit 9 is suppressed, and the occurrence of a reading error of the original image is prevented beforehand and reliably. can do.

The supporting pedestal 22 mounted on the lower surface of the copying machine main body 1 is optional, provided that the supporting pedestal 22 is a portion where the copying machine main body 1 is stably supported on the installation surface and is at least three places. It is preferable to set the position outside the range D in the movement direction of the ink carriage 11 (the interval T between the support bases 22 in the lateral direction is larger than D).

With such a setting, the urging force on the supporting trochanter 23 when the inertia force when the ink carriage 11 is stopped acts on the copying machine main body 1 is reduced, that is, the supporting trochanter 2
3, the displacement width of the copier 1 is reduced, and the deflection of the copier body 1 is reduced accordingly.

Further, as in the above embodiment, the supporting trochanter 2
If the rolling direction of the ink carriage 11 is set to be the same as the moving direction of the ink carriage 11, when the inertia force when the movement of the ink carriage 11 is stopped acts on the copier body 1,
3 is displaced in the lateral direction, so that the function of preventing the upper part of the copying machine main body 1 from bending is exerted without difficulty.

Incidentally, the elastic member 24 is not limited to a coil spring, but as in this embodiment,
When a pair of compression coil springs sandwiching the supporting rotator 23 in the moving direction of the ink carriage 11 is used, the displacement force of the supporting rotator 23 can be effectively absorbed by the spring force from both directions, and the run-out is converged more quickly. It becomes possible.

Also, as in this embodiment, the support base 2
The support base 22 is fixed to the lower surface of the copying machine main body 1 by fixing a connecting member 25 made of a stepped screw inserted through the through hole 22b formed of a long hole formed in the main body 2 of the copying machine.
When the inertia force at the time of stopping the movement of the ink carriage 11 acts on the copying machine main body 1, the stepped screw and the through hole 22b work as a guide, and the meandering movement of the supporting trochanter 23 and the like. Is prevented.

The major dimension φ1 of the through hole 22b
Is the compression coil spring 2 when the supporting trochanter 23 is displaced.
It is sufficient if the length is equivalent to the distance absorbed by 4.

[0035]

According to the present invention, the following effects can be obtained.

(1) A support pedestal is connected so as to be relatively displaceable in the lateral direction with respect to the bottom surface of the installation main body, and a support rotator that can roll on the support pedestal is attached to the bottom surface of the apparatus main body. Since the supporting trowel is displaced laterally on the support base when the inertia force at the time of stopping the movement of the movable body acts on the apparatus main body by providing the elastic member that absorbs the displacement force of the movable body, And the displacement force of the supporting trochanter is absorbed by the elastic member, so that the lateral vibration of the apparatus main body can be converged in a short time.

Further, for example, the structure is simpler and the cost increase can be minimized as compared with the case where a damper mechanism or the like is provided between the original reading section and the image forming section in the image forming apparatus. Easy to proceed.

(2) By arranging the support pedestal outside the range of the moving direction of the movable body, the inertial force when the movement of the movable body is stopped hardly acts on the image forming apparatus. The runout width can be further reduced.

(3) By setting the rolling direction of the supporting trochanter to be the same as the moving direction of the movable body, when the inertia force at the time of stopping the movement of the movable body acts on the apparatus main body, the supporting trochanter moves in the lateral direction. Therefore, the function of preventing bending of the upper portion of the apparatus main body can be reliably exerted.

(4) A through hole consisting of a long hole extending in the moving direction of the movable body is formed in the support pedestal, and the support pedestal is inserted through the through hole and fixed to the lower surface of the apparatus body by the connecting member. By being connected to the lower surface of the apparatus main body so as to be relatively movable in the moving direction, when the inertia force at the time of stopping the movement of the movable body acts on the apparatus main body, the connecting member and the through hole properly move the supporting trochanter. Can guide you.

[Brief description of the drawings]

FIG. 1 is a schematic overall configuration diagram of a copying machine main body equipped with an anti-vibration support according to an embodiment of the present invention.

FIG. 2 is an external perspective view of a copying machine main body showing a mounting portion of the vibration isolator.

FIG. 3 is a cross-sectional view of the anti-vibration support.

FIG. 4 is an explanatory diagram of a conventional image forming apparatus.

[Explanation of symbols]

 1-Copier body 3-Image reading unit 9-Scanner unit 10-Image forming unit 11-Ink carriage 21-Vibration isolator 22-Support pedestal 22b-Through hole 23-Support trochanter 24-Elastic member (compression coil spring) ) 25-connecting member a, b-lateral direction (displacement direction)

Continuing on the front page (72) Inventor Shinji Sugita 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka Inside (72) Inventor Hiroshi Mukai 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka F-term (reference) 2C056 EA18 FA10 HA60 2C061 AQ05 DE05 DF01 DF11 DF22 DF25 3J048 AA05 BC02 BE13 BG02 DA03 EA13

Claims (4)

[Claims] An anti-vibration support provided in a device whose center of gravity changes laterally by a reciprocating movement of a movable body inside, the device being capable of being displaced laterally relative to a lower surface of the device. A connected support pedestal, a support rotator attached to the lower surface of the device and capable of rolling on the support pedestal, and an elastic member disposed on the support pedestal and absorbing a displacement force of the support trochanter,
An anti-vibration support device comprising: 2. The anti-vibration support according to claim 1, wherein the support pedestal is arranged outside a range in a moving direction of the movable body. 3. The anti-vibration support device according to claim 1, wherein the rolling direction of the supporting trochanter is set to be the same as the moving direction of the movable body. 4. The support pedestal has a through-hole formed of a long hole along the moving direction of the movable body, and the support pedestal is inserted into the through-hole and fixed to a lower surface of the apparatus main body by a connecting member. 2. The anti-vibration support according to claim 1, wherein the support is connected to a lower surface of the apparatus main body so as to be relatively movable in the moving direction.