JP2013218776A - Holding part construction of information recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holding part construction of an information recording device which can stabilize vibration proof characteristics of elastic members even if a dimension error is caused between a holding frame and the elastic members.SOLUTION: A holding part construction comprises a holding frame 26 locating outside of an information recording device and consisting of metal plates and elastic members fitting in holes 31 and 32 formed to the holding frame 26. The elastic members comprise circular engagement grooves opening on its peripheral surface and engaging opening end faces of the holes 31 and 32 and abutments existing between the information recording device and the holding frame 26. At the opening end faces of the holes 31 and 32, engagement tongues 31a and 32a not less than three, projecting toward the centers of the holes 31 and 32 and engaging the engagement grooves, are formed.

Description

  The present invention relates to a holding unit structure of an information recording apparatus that holds an information recording apparatus such as a hard disk drive (HDD) mounted on an electronic device or the like.

  Conventionally, in image forming apparatuses such as copiers, printers, facsimiles, or multifunction devices equipped with these functions, and various electronic devices, hard disks are used to cope with high-speed image processing and multi-function modes. A device equipped with a large-capacity information recording device such as a drive (hereinafter simply referred to as “HDD”) is well known.

  In addition, such an information recording apparatus is not directly fixed inside an electronic device, but is fixed through a metal holding frame (see, for example, Patent Document 1).

  At this time, vibration due to the drive of the HDD may cause adverse effects on peripheral devices, cause of resonance, or vibration of the entire electronic device. Therefore, an elastic member such as rubber is interposed between the holding frame and the HDD. (For example, refer to Patent Document 2).

  FIG. 10 shows the relationship between such an elastic member and a holding frame, and the holding frame (entire drawing is omitted) is provided with a support portion 1 in which a holding recess 1a opened at an end edge is formed. A substantially cylindrical elastic member 2 is fitted into the holding recess 1a.

  As shown in FIG. 11, the elastic member 2 is formed with an annular engagement groove 2a that is opened on the peripheral surface thereof, and the engagement groove 2a is fitted into the holding recess 1a. The elastic member 2 is formed with screw holes 2b that are open at both end faces. A screw (not shown) is passed through the screw hole 2b, and the tip of the screw is screwed into the apparatus main body or HDD (not shown). Match.

JP 2006-184605 A JP 2008-171460 A

  However, in the holding part structure of the information recording apparatus described above, for example, as shown in FIG. 10 (B), the diameter L2 of the engaging groove 2a is set to the diameter (width) L1 of the engaging groove 2a. If it is not substantially equal to or greater than that (in the figure, it is more than that), due to variations due to molding errors when the elastic member 2 is molded, or dimensional variations due to processing errors during processing of the engaging groove 1a, etc. There is a problem that the relative dimensional relationship is likely to vary, and the vibration isolation characteristics of the elastic member are not stable.

  At this time, in particular, when the holding recess 1a is a perfect circular hole, the contact portion between the engagement groove 2a and the holding recess (hole) 1a is large (annular), so that vibration is easily transmitted to the elastic member 2. There is also a problem that the vibration-proofing effect is low with respect to vibrations other than the direction along the axial direction of the elastic member 2. Further, the elastic member 2 is deformed so that the engaging groove 2a is fitted into the engaging concave portion (hole) 1a equivalent to the outer diameter of the elastic member 2, so that the elastic member 2 is easily damaged during the operation, and the vibration-proofing effect is obtained. There was also a problem that it was easily damaged. In addition, since it is common to provide the elastic member 2 in multiple places with respect to a holding | maintenance frame, if the elastic member 2 is damaged, the vibration proof balance will be destroyed as a whole, and the vibration suppression effect will be further impaired. Further, when the driving unit is provided in a configuration other than the information recording device as in the cited document 1, compared to the case where the driving from the information recording device side is not transmitted to other peripheral devices as in the cited document 2, Since vibration suppression needs to suppress vibration transmission from the peripheral device (driving unit) side to the information recording device side, the vibration absorbing force of the elastic member 2 must be increased.

  Accordingly, an object of the present invention is to provide a holding portion structure of an information recording apparatus capable of stabilizing the vibration isolation characteristics of an elastic member even if a dimensional error occurs between the holding frame and the elastic member.

  In order to solve the above problems, the holding part structure of the information recording apparatus of the present invention has a holding frame made of a metal plate located outside the information recording apparatus and an elastic fit into a hole formed in the holding frame. An elastic engagement member that is open to its peripheral surface and engages with the opening end surface of the hole, and an abutting portion that is interposed between the information recording device and the holding frame. In the holding structure of the information recording apparatus having the above, three or more engaging tongues that protrude toward the center of the hole and engage with the engaging groove are formed on the opening end surface of the hole. It is characterized by being.

  According to the present invention, even if a dimensional error occurs between the holding frame and the elastic member, the vibration isolation characteristics of the elastic member can be stabilized.

  At this time, it is preferable that the protruding end surface of the engaging tongue piece is on the same circumference having a diameter smaller than the outer diameter of the bottom surface facing the open end of the engaging groove portion with the center of the hole portion as a reference. Moreover, it is preferable that the outer diameter of a hole part is smaller than the outer diameter of an elastic member.

  Further, the elastic member can be compressed and deformed in the radial direction, and a plurality of holes are formed in the holding frame in a separated state, and the plurality of holes are narrower than the outer diameter of the bottom surface facing the open end of the engaging groove. It is also possible to communicate with each other through a simple bridge hole.

  The holding part structure of the information recording apparatus of the present invention can stabilize the vibration isolation characteristics of the elastic member even if a dimensional error occurs between the holding frame and the elastic member.

1 is a perspective view of a multifunction peripheral as an electronic apparatus that employs a holding unit structure of an information recording apparatus according to an embodiment of the present invention. It is a rear view of the principal part of the multifunctional machine as an electronic apparatus which employ | adopted the holding | maintenance part structure of the information recording device of one Embodiment of this invention. 1A and 1B show a holding unit structure of an information recording apparatus according to an embodiment of the present invention, in which FIG. 1A is a perspective view of a holding frame, and FIG. The holding | maintenance part structure of the information recording device which concerns on one Embodiment of this invention is shown, (A) is explanatory drawing of the principal part which shows the relationship between a hole and an elastic member, (B) is the relationship between a hole and an elastic member. It is sectional drawing of the principal part which shows. 1A and 1B show a holding part structure of an information recording apparatus according to an embodiment of the present invention, in which FIG. 1A is an enlarged explanatory view of a main part of a holding frame with an elastic member attached, and FIG. FIG. The holding | maintenance part structure of the information recording device which concerns on one Embodiment of this invention is shown, (A) is sectional drawing of the elastic member in alignment with the AA of FIG.6 (C), (B) is a perspective view of an elastic member, (C) is a top view of an elastic member. It is explanatory drawing at the time of mounting | wearing an elastic member to the hole part which shows the holding | maintenance part structure of the information recording device which concerns on one Embodiment of this invention. The modification of the holding | maintenance part structure of the information recording device which concerns on one Embodiment of this invention is shown, (A) is an expanded explanatory view of the principal part of a holding frame seen from the surface side of the state which attached the elastic member, (B) These are expansion explanatory drawings of the principal part of a holding frame seen from the back surface side in the state which attached the elastic member. The modification of the holding | maintenance part structure of the information recording device which concerns on one Embodiment of this invention is shown, (A) is an expanded explanatory view of the principal part of a holding frame seen from the surface side of the state which attached the screw, (B). It is an enlarged explanatory view of the principal part of the holding frame partially broken. 1 shows a holding unit structure of a conventional information recording apparatus, in which (A) is a perspective view of the main part showing the relationship between the holding frame and the elastic member, and (B) is a plane of the main part showing the relationship between the holding frame and the elastic member. FIG. The holding | maintenance part structure of the conventional information recording device is shown, (A) is sectional drawing of an elastic member, (B) is a perspective view of an elastic member, (C) is a top view of an elastic member.

  Next, a holding unit structure of an information recording apparatus according to an embodiment of the present invention will be described with reference to the drawings. In addition, although the Example shown below is a suitable specific example in the holding | maintenance part structure of the information recording device of this invention, and there may be technically preferable various restrictions, the technical scope of this invention is Unless specifically described to limit the present invention, it is not limited to these embodiments. In addition, the constituent elements in the embodiments shown below can be appropriately replaced with existing constituent elements and the like, and various variations including combinations with other existing constituent elements are possible. Therefore, the description of the embodiment described below does not limit the contents of the invention described in the claims.

(Overall configuration of MFP)
FIG. 1 is a perspective view of a multifunction peripheral as an electronic apparatus that employs a holding unit structure of an information recording apparatus according to an embodiment of the present invention. FIG. 2 employs a holding unit structure of the information recording apparatus of one embodiment of the present invention. It is a rear view of the principal part of the multifunctional machine as an electronic device.

  Referring to FIG. 1, a multifunction machine 11 as an image forming apparatus includes a plurality of stages (the number of stages is not limited) of paper feed cassettes 13, 14, 15 that can be pulled out from the front of the apparatus body 12, and various types of copiers, facsimile machines, and scanners. As functions, a platen 16 opened by a cover or an automatic document feeder (both not shown) when reading a document, an operation panel 17 installed on the side surface of the apparatus main body 12, and a part of the front of the apparatus main body 12 The front cover 18 that is opened when performing maintenance (such as clearing jams, inspecting parts, or replacing the toner cartridge) by opening and closing the paper, and transfer paper separately from one of the paper cassettes 13, 14, 15. The manual feed tray 19 that can be pulled out from the side surface (right side in the figure) and the transfer paper after the image forming process are stacked on the other side surface (left side in the figure) of the apparatus main body 12 It includes a two-stage discharge tray 20 and 21, the.

  Further, as shown in FIG. 2, the multifunction machine 11 is disposed on the back side of the apparatus main body 12, for example, between the front cover 18 shown in FIG. 1 and the uppermost sheet cassette 13 in the height direction. The drive unit 22 that is normally covered with a back cover (the state in which the figure is removed) is disposed. The drive unit 22 drives various drive systems from the above-mentioned transfer paper feeding to image discharge processing to paper discharge, and stores programs and image data for the image formation processing and drive control. Information recording devices (HDD) 23 and 24 are mounted.

  A cable 25 is connected to each of the information recording devices 23 and 24 to enable power supply and data transmission / reception. The information recording devices 23 and 24 are supported by the device main body 12 via a holding frame 26 made of one metal plate.

  3 to 7 show a holding unit structure of an information recording apparatus according to an embodiment of the present invention. FIG. 3A is a perspective view of the holding frame, and FIG. 3B is an enlarged view of a main part of the holding frame. 4A is an explanatory view of a main part showing the relationship between the hole and the elastic member, FIG. 4B is a cross-sectional view of the main part showing a relationship between the hole and the elastic member, and FIG. FIG. 5A is an enlarged explanatory view of the main part of the holding frame in a state where the elastic member is attached, FIG. 5B is an enlarged explanatory view of the main part of the holding frame in a state where the screw is attached, and FIG. FIG. 6B is a perspective view of the elastic member, FIG. 6C is a plan view of the elastic member, and FIG. 7 is an explanation when the elastic member is mounted in the hole. FIG.

  As shown in FIG. 3 (A), the holding frame 26 is opened downward in the figure (same as the actual machine mounted state in FIG. 2 <hereinafter the same>) so that the information recording devices 23 and 24 can be inserted. 27, a bracket portion 28 that is integrally formed with the frame main body portion 27 and is fixed to the apparatus main body 12, and is formed by cutting and raising between opposing portions of the frame main body portion 27 and between the information recording devices 23 and 24. And a fixing hole 30 formed by punching or the like in opposing portions of the frame main body 27 and positioned between the upper and lower portions of the information recording devices 23 and 24 (a total of four locations). I have.

  As shown in FIG. 3B, the fixing hole 30 includes a hole 31 used when fixing one information recording device 23 to the holding frame 26 and the other information recording device 24 holding the frame 26. A hole 32 used for fixing to the hole and a bridge hole 33 communicating with each of the holes 31 and 32 are integrally formed.

  As shown in FIG. 4, three or more engaging tongue pieces 31 a and 32 a protruding toward the centers of the hole portions 31 and 32 are formed on the opening end surfaces of the hole portions 31 and 32. The engaging tongue pieces 31a and 32a are formed at the position of a half point with respect to the center of the hole portions 31 and 32 so as to avoid the bridge hole 33. As shown in FIG. 5A, an elastic member 34 is fitted in the holes 31 and 32. The protruding end surfaces of the engaging tongue pieces 31a and 32a are located on concentric circles with the centers of the hole portions 31 and 32 as a reference. The engaging tongue pieces 31 a and 32 a substantially support the elastic member 34 fitted in the hole portions 31 and 32. The number of protrusions of the engaging tongues 31a and 32a can be set to an appropriate number depending on conditions such as the diameter of the holes 31 and 32 and the size and rotational speed of the information recording devices 23 and 24 to be supported. At this time, in consideration of the support balance, it is preferable to arrange them evenly at three or more equal points. Further, when the number is increased, the diameter of the holes 31 and 32 and the size and rotation speed of the information recording devices 23 and 24 to be supported are prevented so that the contact area with the elastic member 34 is widened and vibration transmission is not easily performed. It is set in consideration of such conditions. In other words, by minimizing the contact location (contact area) between the holding frame 26 and the elastic member 34, it is difficult to transmit vibration from the drive unit 22 to the information recording devices 23 and 24 via the holding frame 26. Thus, the anti-vibration effect against vibrations other than the axial direction of the elastic member 34 can be improved.

  As shown in FIG. 6, the elastic member 34 has an annular engagement groove 34 a that opens to the peripheral surface thereof and engages with the opening end surfaces of the holes 31 and 32, the information recording devices 23 and 24, and the holding frame 26. 5b, a screw hole 34c through which a screw 35 for fixing the information recording devices 23 and 24 to the holding frame 26 passes, and an end face is opened. And a plurality of ribs 34e that protrude from the end face and extend radially from the center so as to straddle the thickness reduction groove 34d. The elastic member 34 is integrally formed of rubber or soft foaming resin.

  Here, as shown in FIG. 4 (A), the protruding ends of the engaging tongues 31a and 32a are on the same circumference of a virtual circle (not shown) based on the centers of the holes 31 and 32, The diameter W1 of the virtual circle is smaller than the outer diameter W2 of the bottom surface facing the open end of the engagement groove 34a. The outer diameter W3 of the holes 31 and 32 is preferably slightly smaller than the outer diameter W4 of the elastic member 34. The elastic member 34 can be compressed and deformed in the radial direction. Therefore, as shown in the present embodiment, when the two information recording devices 23 and 24 are supported by the holding frame 26 adjacent to each other, the pair of spaced holes 31 and 32 are communicated with each other by the bridge hole 33. 7, the elastic member 34 can be fitted into the hole portions 31 and 32 from the bridge hole 33. At this time, the elastic member 34 is prevented from unexpectedly dropping from the holes 31 and 32 by making the width W5 of the bridge hole 33 narrower than the outer diameter W2 of the bottom surface facing the open end of the engagement groove 34a. can do. The width W5 of the bridge hole 33 is preferably smaller than 2/3 of the outer diameter W4 of the elastic member 34 and larger than 1/2.

  The engaging groove 34a is formed in the vicinity of the middle in the length direction along the axial direction of the elastic member 34, and is formed over the entire circumference. As a result, the elastic member 34 is symmetric with respect to the engaging groove 34a, and the inner and outer attachment states of the holding frame 26 are unquestioned. The opening width W6 of the engagement groove 34a is smaller than the thickness of the holding frame 26.

  The contact portion 34b is configured by a portion excluding the engagement groove portion 34a, and includes a lightening groove 34d and a plurality of ribs 34e. The abutting portion 34 b is used as the abutting portion 34 b interposed between the information recording devices 23 and 24 and the holding frame 26 on the inner side of the holding frame 26. Further, the one interposed between the holding frame 26 and the screw (head) 35 functions here as a washer portion 34f.

  When the information recording devices 23 and 24 are supported, the screw holes 34c that pass through female screw holes (not shown) formed in the side surfaces of the information recording devices 23 and 24 in advance pass therethrough. At this time, as shown in FIG. 4A, the diameter W7 of the screw hole 34c is desirably smaller than the diameter of the shaft portion of the screw 35. Accordingly, when the screw 35 is passed through the screw hole 34c, the elastic member 34 is coupled with the fact that the diameter W1 of the engaging tongues 31a and 32a is smaller than the outer diameter W2 of the engaging groove 34a. Can be firmly fitted, and at the same time, the elastic member 34 and the screw 35 can be disposed substantially coaxially in the center of the holes 31 and 32. Further, due to the presence of the screw hole 34c, the elastic member 34 can be easily compressed and deformed in the radial direction, and the elastic member 34 can be easily fitted into the hole portions 31 and 32 from the bridge hole 33 as shown in FIG. And Thereby, the elastic member 34 can suppress the damage at the time of moving from the bridge hole 33 to the hole parts 31 and 32.

  The lightening groove 34d is formed to prevent sink marks during molding and to maintain cushioning properties. Therefore, the presence / absence of the lightening groove 34d, the groove width, the depth, and the like are appropriate depending on the material, the size of the elastic member 34, and the like.

  The plurality of ribs 34e can improve shock absorption by reducing the contact area between the information recording devices 23 and 24 and the screw 35. The presence / absence, the number, size, and the like of the plurality of ribs 34e are appropriate depending on the material, the size of the elastic member 34, and the like.

  In the above configuration, the information recording devices 23 and 24 are mounted on the device main body 12 in a state of being held in advance by the holding frame 26, and the cable 25 is connected thereto.

  As shown in FIG. 7, the holding frame 26 is compressed and deformed so as to squeeze the elastic member 34 in the radial direction, and is fitted into the holes 31 and 32 from the bridge holes 33, and then the information recording devices 23 and 24. Is inserted inward from one end side of the main body frame 27. In this case, a part of the main body frame 27 into which the elastic member 34 is inserted is bent inward to form a strip-like partition portion 29 extending in the insertion direction of the information recording devices 23 and 24. The partition portion 29 is Since the cross-sectional shape in the longitudinal direction is processed into a shape in which trapezoidal portions are arranged at a predetermined interval, the information recording devices 23 and 24 are smoothly inserted with a predetermined interval therebetween. Then, the information recording devices 23 and 24 are fixed to the holding frame 26 with screws 35 via the elastic member 34. The holding frame 26 is fixed to the apparatus main body 12 by fixing the bracket portion 28 with screws 37 as shown in FIG.

  When the apparatus main body 12 is operated, vibration is generated by driving of the drive unit 22 (particularly, an image reading unit, a transfer paper transport device, etc.). The vibration is transmitted as vibration of the entire holding frame 26 from the bracket portion 28, but since the elastic member 34 is interposed between the holding frame 26 and the information recording devices 23, 24, the information recording device 23. , 24 is alleviated.

  8 and 9 show a modified example of the holding unit structure of the information recording apparatus according to the embodiment of the present invention. FIG. 8A shows the essential parts of the holding frame as viewed from the front side with the elastic member 34 attached. 8B is an enlarged explanatory view of the main part of the holding frame as viewed from the back side with the elastic member 34 attached, and FIG. 9A is from the front side with the screw attached. FIG. 9B is an enlarged explanatory view of the main part of the holding frame with a part broken away.

  In the above embodiment, as shown in FIG. 3, the fixing hole 30 is disclosed to be formed in the flat frame body 27. However, the information recording devices 23 and 24 such as HDDs are relatively large. And has a driving system (a rotating body such as a motor). For this reason, when it is desired to secure strength while the holding frame 26 is reduced in weight, as shown in FIGS. 8 and 9, the engaging tongues 41a formed in the holes 41 and 42 of the frame body 47 of the holding frame 46 are used. , 42a can be formed in a state of being bent stepwise inward to ensure strength.

  Thus, in the holding part structure of the information recording devices 23 and 24 of the present invention, the holding frame 26 made of a metal plate is formed outside the information recording devices 23 and 24, and the holding frame 26 is formed. An elastic member 34 that fits into the holes 31, 32, and the elastic member 34 has an annular engagement groove 34a that opens to the peripheral surface and engages with the opening end surfaces of the holes 31, 32, and A contact portion 34b interposed between the information recording devices 23 and 24 and the holding frame 26, and projecting toward the center of the hole portions 31 and 32 on the opening end surfaces of the hole portions 31 and 32. Since the three or more engaging tongue pieces 31a and 32a that engage with the mating groove portion 34a are formed, even if a dimensional error occurs between the holding frame 26 and the elastic member 34, the vibration isolating characteristics of the elastic member 34 are improved. Can be stable.

DESCRIPTION OF SYMBOLS 23 ... Information recording device 24 ... Information recording device 25 ... Cable 26 ... Holding frame 27 ... Frame main-body part 28 ... Bracket part 29 ... Partition part 30 ... Fixing hole 31 ... Hole part 31a ... Engagement tongue 32 ... Hole part 32a ... engagement tongue piece 33 ... bridge hole 34 ... elastic member 34a ... engagement groove portion 34b ... contact portion 34c ... screw hole 34d ... thickening groove 34e ... rib 34f ... washer portion 35 ... screw

Claims (7)

A holding frame made of a metal plate located outside the information recording device;
An elastic member that fits into a hole formed in the holding frame,
The elastic member is
An annular engagement groove that opens to the peripheral surface and engages with the opening end surface of the hole;
A contact portion interposed between the information recording device and the holding frame;
In the holding part structure of the information recording device comprising:
In the information recording apparatus, the opening end face of the hole is formed with three or more engaging tongues that protrude toward the center of the hole and engage with the engaging groove. Holding part structure.   The protruding end surface of the engaging tongue piece is on the same circumference having a diameter smaller than the outer diameter of the bottom surface facing the open end of the engaging groove portion with respect to the center of the hole portion. The holding part structure of the information recording device according to 1.   The holding part structure of the information recording apparatus according to claim 1, wherein an outer diameter of the hole is smaller than an outer diameter of the elastic member. The elastic member is capable of compressive deformation in the radial direction,
A plurality of the hole portions are formed in the holding frame in a separated state,
The said some hole part is connected by the bridge | bridging hole narrower than the outer diameter of the bottom face facing the open end of the said engaging groove part, The any one of Claim 1 thru | or 3 characterized by the above-mentioned. The holding part structure of the information recording device described in 1.   5. A screw hole through which a screw for fixing the information recording device to the holding frame is formed in the elastic portion at the center thereof. Structure of the information recording apparatus.   6. The holding part structure for an information recording apparatus according to claim 5, wherein the elastic member is formed with an annular hollow groove that opens to an end face. 7. The holding structure of an information recording apparatus according to claim 6, wherein the elastic member is formed with a plurality of ribs that protrude from an end surface and extend radially from the center so as to straddle the hollow groove.

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