JP4267501B2 - Soundproof door - Google Patents

Description

  The present invention relates to a soundproof door. Specifically, the present invention relates to a soundproof door mounted on a soundproof wall for noise reduction of a press machine.

Soundproof doors that are mounted on soundproof walls are known. For example, a plurality of soundproof doors are mounted next to a soundproof wall of a press machine. When the soundproof door is opened, the operation state of each part of the press machine can be confirmed. In order to reduce the noise of the press machine as much as possible between the adjacent soundproof doors, high sealing performance is required.
FIG. 14 illustrates an end cross section of the adjacent soundproof doors 102 and 120. The soundproof doors 102 and 120 can be opened and closed independently, and are opened when moved in the direction of the arrow. One soundproof door 102 is provided with a seal mechanism 104. The seal mechanism 104 includes a support base 106, a pin 108, a hinge 110, a seal member 112, and a spring (not shown). The support base 106 is fixed to the door body 103. The hinge 110 extends in a direction perpendicular to the paper surface of FIG. 14 and is rotatably attached to the support base 106 via a pin 108. The seal member 112 is fixed to the hinge 110 and extends in the longitudinal direction of the hinge 110. The seal member 112 is made of resin. The spring urges the hinge 110 clockwise around the pin 108. A seal surface 122 is formed on the other soundproof door 120. Since it is comprised in this way, the sealing member 112 of the sealing mechanism 104 of the soundproof door 102 contacts the sealing surface 122 of the soundproof door 120 along the longitudinal direction, and seals the soundproof doors 102 and 120 together.

JP-A-6-126351

As described above, the hinge 110 of the seal mechanism 104 is attached to the support base 106 via the pin 108. Therefore, the movement of the seal member 112 fixed to the hinge 110 is restricted so that it can rotate only around the pin 108. For this reason, a gap may be generated between the seal member 112 and the seal surface 122 due to factors such as an error in mounting the hinge 110 to the support base 106 and an installation error of the soundproof doors 102 and 120. If a gap is generated between the seal member 112 and the seal surface 122, the noise reduction effect is reduced.
This invention is made | formed in order to solve this problem, and makes it a subject to provide the soundproof door which can reduce a noise more.

Soundproofing door set of the present invention, a plurality of soundproof door are arranged adjacent. The seal mechanism attached to the door body of each soundproof door includes a roller, means for supporting the roller so that the roller can move within a predetermined area, and means for pressing the outer peripheral surface of the roller against the roller of the adjacent soundproof door. The rollers that are pressed against each other and the shafts of the rollers are eccentric in the opening / closing direction of the soundproof door.
When is constructed as this, close contact in the state where you adjacent roller and the roller is eccentric with respect to the opening and closing of the soundproof door, stabilized in that state. In this case, a tangent line passing through the contact point between the rollers is inclined with respect to the door opening / closing direction. For this reason, the noise propagation path does not extend linearly with respect to the door opening / closing direction, and the noise is further reduced by adding the element of diffraction attenuation .

In the above soundproof door set, the support means comprises an inner case member and the outer case member, an inner space surrounded by the inner case member and the outer case member preferably has a slit-shaped opening. Moreover, it is preferable that the roller is movably disposed in the internal space, and a part of the outer peripheral surface thereof is exposed to the outside through the opening while being urged by the pressing means .
According to this configuration, when the soundproof door is closed, the contacted roller and the outer peripheral surface of the roller move to a position where they are in close contact with each other along the axial direction, and are stabilized in that state. For this reason, a high soundproofing effect can be obtained.

The press device has the above soundproof door set.
According to this press apparatus, the noise which a press apparatus emits can be reduced more.

The main features of the embodiments described later will be described.
(1) The soundproof door is mounted on the soundproof wall in a state of being adjacent to each other in the horizontal direction. The soundproof wall is installed in front of the press. When opening the soundproof door, the soundproof door is rotated around the hinge provided at the upper end and pulled up.
(2) The seal mechanism is attached to the side portion of the soundproof door. The sealing mechanism includes an outer case member, an inner case member, a pressing member, a sealing member, a spring, and the like. The outer case member and the inner case member form an internal space having a slit-like opening extending in the vertical direction. The seal member is formed in a roller shape, and a part of the outer peripheral surface is exposed to the outside from the opening in a state where the seal member is biased by the spring via the pressing member.
(3) When the soundproof door is closed, the seal members of the adjacent seal mechanisms move to a position where the outer peripheral surfaces exposed from the opening are in close contact along the axial direction, and are stabilized in that state. When the sealing members are in close contact with each other, a high soundproofing effect is obtained.

An embodiment of the soundproof door according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the soundproof doors 23 to 32 are mounted on the soundproof wall 12 in a state of being arranged adjacent to each other in the horizontal direction. The sound barrier 12 is disposed on the front surface of the press machine 11. The soundproof door 12 may be disposed on the rear surface or side surface of the press machine 11. The soundproof wall 12 includes two doors 13 and 14. The soundproof door 23 is attached to the door 13 by a hinge 18 at the upper end. The soundproof door 32 is attached to the door 14. The soundproof doors 24 to 31 are attached to the soundproof wall main body 12a. The doors 13 and 14 are provided with windows 17 for internal monitoring. The soundproof wall main body 12a is also provided with two windows 16 for internal monitoring.
A handle 15 is provided on each of the soundproof doors 23 to 32. When the handle 15 is operated, the soundproof doors 23 to 32 can be switched between a locked state and an unlocked state. When the soundproof walls 23 to 32 are opened, the handle 15 is operated to release the lock, and the soundproof doors 23 to 32 are rotated around the hinge 18 and pulled upward.
FIG. 1 illustrates a state in which the third, fourth, and fifth soundproof doors 25, 26, and 27 from the left are opened. An open position holding mechanism (not shown) is provided, and the opened soundproof doors 25, 26, and 27 can be held as they are. A chute 21 is installed in a portion where the soundproof doors 25, 26, 27 are opened. The chute 21 carries out the workpiece processed by the press machine 11 to the workpiece storage box 20 disposed in front of the soundproof wall 12. The installation position of the chute 21 can be changed by selecting the soundproof doors 23 to 32 to be opened. When the chute 21 is not installed, all the soundproof doors 23 to 32 are closed. When the inspection / maintenance of the press machine 11 is performed, the soundproof doors 23 to 32 near the inspection / maintenance part are opened.

The seal mechanism is attached to the side portions of the soundproof doors 23 to 32. FIG. 3 shows a longitudinal sectional view of a seal mechanism mounted on an adjacent soundproof door. In the following, for convenience of explanation, it is assumed that the sealing mechanism of FIG. 3 is mounted on the soundproof door 28 and the soundproof door 29. Also, the left seal mechanism 40 is attached to the soundproof door 28 and the right seal mechanism 41 is attached to the soundproof door 29.
As shown in FIG. 4, the left seal mechanism 40 includes an outer case member 42, an inner case member 43, a pressing member 45, a seal member 44, a spring 46, a bolt 47, a nut 48, a bolt 49, and a nut 50. ing. The upper side in FIG. 4 is the inner side (press machine 11 side), and the lower side is the outer side. The outer case member 42 extends in the vertical direction (perpendicular to the plane of FIG. 4) and is fixed to the soundproof door 28 by welding. The inner case member 43 also extends in the vertical direction and is fastened to the outer case member 42 with bolts 49 and nuts 50. The nut 50 is fixed to the outer case member 42 by welding. When the outer case member 42 and the inner case member 43 are fastened, an inner space 51 having a slit-like opening 52 extending in the vertical direction is formed while being surrounded by them. The nut 48 is fixed to the soundproof door 28 by welding. The bolt 47 is screwed into the nut 48. The pressing member 45 is attached to the bolt 47 so as to be slidable in the axial direction. Bolts 47 are inserted into the springs 46. The spring 46 is interposed between the pressing member 45 and the outer case member 42.
The seal member 44 is formed in a roller shape (cylindrical shape), and a part of the outer peripheral surface of the seal member 44 is exposed to the outside from the opening 52 in a state of being biased by the spring 46 via the pressing member 45.
The angle θ1 at which the outer case member 42 is bent inward is larger than the angle θ2 at which the inner case member 43 is bent outward.

The right seal mechanism 41 includes an outer case member 55, an inner case member 56, a pressing member 45, a seal member 54, a spring 46, a bolt 47, a nut 48, a bolt 49, and a nut 50. The outer case member 55 and the inner case member 56 form an inner space 58 that is surrounded by them and has a slit-like opening 57 that extends in the vertical direction.
The seal member 54 is formed in a roller shape, and a part of the outer peripheral surface thereof is exposed to the outside from the opening 57 in a state in which the seal member 54 is biased by the spring 46 via the pressing member 45.
The angle θ3 at which the outer case member 55 is bent inward is smaller than the angle θ4 at which the inner case member 56 is bent outward.
Since the other structure of the right seal mechanism 41 is the same as that of the left seal mechanism 40, further explanation is omitted.

The axis C <b> 1 of the seal member 44 of the left seal mechanism 40 can move in the internal space 51 while being urged (pressed) toward the right soundproof door 29 by the spring 46. Similarly, the axis C <b> 2 of the seal member 54 of the right seal mechanism 41 can also move in the internal space 58 while being urged toward the left soundproof door 28 by the spring 46. For this reason, when the soundproof doors 28 and 29 are closed, the seal member 44 and the seal member 45 that are in contact with each other move to a position where the outer peripheral surfaces are in close contact with each other along the axial direction, and are stabilized in that state. When the seal member 44 and the seal member 45 are in close contact, a high soundproofing effect is obtained. In FIG. 4, the seal member 44 is stable with its outer peripheral surface in contact with the outer end portion of the opening 52 and the seal member 54. The seal member 54 is stable with its outer peripheral surface in contact with the inner end of the opening 57 and the seal member 44.
FIG. 5 illustrates a state in which the soundproof door 29 is closed and the soundproof door 28 is opened. The width of the opening 52 formed by the outer case member 42 and the inner case member 43 of the left seal mechanism 40 is smaller than the diameter of the seal member 44. The width of the opening 57 formed by the outer case member 55 and the inner case member 56 is smaller than the diameter of the seal member 54. Therefore, even if the soundproof door 28 is opened and the contact between the seal member 44 and the seal member 54 is released, the seal member 54 comes out of the right seal mechanism 41 when the seal member 44 comes out of the left seal mechanism 40. Is prevented. Accordingly, the seal member 44 of the left seal mechanism 40 is urged by the spring 46 and is stabilized in a state where the seal member 44 is in contact with both ends of the opening 52. Similarly, the seal member 54 of the right seal mechanism 41 is also urged by the spring 46 and is stabilized in a state where the seal member 54 is in contact with both ends of the opening 57. When closing the soundproof door 28, the soundproof door 28 is moved in the direction of arrow 59.
The seal member may be made of metal, but is preferably made of self-lubricable resin (for example, polyethylene resin or polyamide resin). When the outer peripheral surfaces of the resin seal member are in contact with each other, the resin seal member is more closely attached to the resin seal member than the metal seal member.
The upper and lower ends of the closed soundproof doors 23 to 32 are sealed with rubber seals.

  As already described, the angle θ1 of the outer case member 42 of the left seal mechanism 40 is larger than the angle θ2 of the inner case member 43. The angle θ3 of the outer case member 55 of the right seal mechanism 41 is smaller than the angle θ4 of the inner case member 56. Therefore, as shown in FIG. 4, the seal member 44 of the left seal mechanism 40 and the seal member 54 of the right seal mechanism 41 are eccentric with respect to the opening / closing direction of the soundproof doors 28 and 29. It adheres in a state. When the shaft C1 and the shaft C2 are eccentric, the tangent line (line 60) passing through the contact point between the seal member 44 and the seal member 54 is inclined with respect to the line 61 extending in the opening / closing direction of the soundproof doors 28 and 29 (line 61). And the inclination angle formed by the line 60 is θ5). When the line 60 and the line 61 are inclined, the noise of the press machine 12 propagating through the contact portions of the seal members 44 and 54 is further attenuated. The noise is attenuated in this way because the noise propagation path does not extend linearly in the door opening / closing direction and a bent diffraction attenuation element is added. If the noise propagation path is bent, the noise can be reduced even if a gap is momentarily generated between the seal members 44 and 45 due to vibration caused by the operation of the press machine 12.

The noise propagating through the contact portions of the seal members 44 and 54 is attenuated as the inclination angle θ5 formed by the line 61 and the line 60 increases. FIG. 6 illustrates a case where the angle difference between the angles θ1 and θ2 and the angle difference between the angles θ3 and θ4 are larger than those illustrated in FIG. In this way, the inclination angle θ5 becomes larger and noise can be further attenuated.
As shown in FIG. 7, the outer case member 42, the inner case member 43, the outer case member 55, and the inner case member 56 are formed so that the angles θ1, θ2, θ3, and θ4 are the same angle, and the left seal mechanism 40 The right seal mechanism 41 can also be arranged so as to be displaced in the door opening / closing direction. Even if comprised in this way, since inclination-angle (theta) 5 can be provided, a noise can be attenuate | damped effectively. Furthermore, since the outer case member 42 and the outer case member 55 and the inner case member 43 and the inner case member 56 can be shared, the cost can be reduced.
Since the seal members 44 and 45 are roller-shaped, they can rotate around the shaft when the soundproof doors 28 and 29 are opened and closed. For this reason, the force which opens and closes the soundproof doors 28 and 29 is reduced.
As shown in FIG. 8, it is possible to simply form the seal surface 64 without attaching the right seal mechanism 41 to the right soundproof door 29. Even if comprised in this way, the sealing member 44 will move to the position where the outer peripheral surface closely_contact | adheres to the sealing surface 64 along an axial direction, and is stabilized in the state. Further, as shown in FIG. 13, the seal surface 64 can be inclined by θ6. In this configuration, the seal member 44 moves to a position where the outer peripheral surface thereof is in close contact with the seal surface 64, and the tangent line passing through the contact line is inclined and stabilized in that state.

  FIG. 9 illustrates a cross section of the soundproof doors 24, 25, 26, 27, and 28. Hereinafter, for the convenience of explanation, the soundproof doors 25, 26, and 27 are referred to as a left soundproof door 25, a central soundproof door 26, and a right soundproof door 27, respectively. The soundproof doors 25, 26, 27 are equipped with a seal mechanism having the same configuration as the seal mechanisms 40, 41 described above. A first seal mechanism 74 is mounted on the left side of the left soundproof door 25, and a second seal mechanism 75 is mounted on the right side. The first seal mechanism 74 includes a first seal member 80, and the second seal mechanism 75 includes a second seal member 81. A third seal mechanism 76 is attached to the left side of the central soundproof door 26, and a fourth seal mechanism 77 is attached to the right side. The third seal mechanism 76 includes a third seal member 82, and the fourth seal mechanism 77 includes a fourth seal member 83. A fifth seal mechanism 78 is mounted on the left side of the right soundproof door 27, and a sixth seal mechanism 79 is mounted on the right side. The fifth seal mechanism 78 includes a fifth seal member 84, and the sixth seal mechanism 79 includes a sixth seal member 85. The third seal member 82 of the third seal mechanism 76 of the central soundproof door 26 and the fourth seal member 83 of the fourth seal mechanism 77 are located on the inner side of the fourth seal member 83 (on the press 11 side). ) Is eccentric in the door opening and closing direction. Similarly to the third seal member 82 and the fourth seal member 83, the first seal member 80 and the second seal member 81, and the fifth seal member 84 and the sixth seal member 85 are also eccentric in the door opening / closing direction. Therefore, the seal member on one side (left side) of the soundproof door is arranged on the inner side of the mating seal member on the other side, and the seal member on the other side (right side) is arranged on the outer side of the mating seal member on the other side. The For example, the third seal member 82 of the third seal mechanism 76 of the central soundproof door 26 is disposed on the inner side of the second seal member 81 of the second seal mechanism of the left soundproof door 25. The fourth seal member 83 of the fourth seal mechanism 77 of the central soundproof door 26 is disposed outside the fifth seal member 84 of the fifth seal mechanism 78 of the right soundproof door 27.

  As described above, the third seal member 82 is disposed on the inner side of the second seal member 81. For this reason, when the central soundproof door 26 is opened, the third seal member 82 has to get over the second seal member 81 once. The fourth seal member 83 is disposed outside the fifth seal member 84. For this reason, the fourth seal member 83 and the fifth seal member 84 apply a force in the opening direction to the central soundproof door 26. Therefore, a user who wants to open the central soundproof door 26 acts to force the third seal member 82 to get over the second seal member 81 once, and the fourth seal member 83 and the fifth seal member 84 act in the opening direction. The central soundproof door 26 must be pulled with the resultant force. Such a force relationship is the same for the soundproof doors 25 and 27. Therefore, the force for opening the soundproof doors 25, 26, 27 is shared.

  In the form shown in FIG. 10, the third seal member 82 of the third seal mechanism 76 of the central soundproof door 26 and the fourth seal member 83 of the fourth seal mechanism 77 are not eccentric in the door opening / closing direction. Similarly, the first seal member 80 and the second seal member 81, and the fifth seal member 84 and the sixth seal member 85 are not eccentric in the door opening / closing direction. The first seal member 80 and the second seal member 81, and the fifth seal member 84 and the sixth seal member 85 are disposed outside the third seal member 82 and the fourth seal member 83. With this configuration, the left soundproof door 25 and the right soundproof door 27 can be opened with a small force, but the central soundproof door 26 cannot be opened without a large force. That is, in such a configuration, a soundproof door that is heavy to open and a soundproof door that is light to open coexist. If the soundproof door that is heavy to open and the soundproof door that is light to open coexist, the user will be confused when opening the soundproof door. In the configuration shown in FIG. 9, since the force for opening the soundproof door is shared, the user is prevented from feeling such a puzzle. Of course, even in the configuration shown in FIG. 10, the seal members are sufficiently in close contact with each other, so that the noise of the press machine 11 can be effectively attenuated.

  FIG. 11 is a graph comparing the noise level actually measured in the form shown in FIG. 4 with the conventional noise level. The horizontal axis is 1/1 octave center frequency (Hz), and the vertical axis is equivalent noise level (dB). The AP described in the figure is an abbreviation for an all-pass value and means a total value of dB values in each frequency band. As is apparent from this graph, there was a noise attenuation effect particularly in a high frequency region of 500 to 8000 (Hz), and a significant noise reduction of about 3 (dB) in AP value could be realized.

The seal mechanism exemplified in the present embodiment is not only used for soundproofing between the soundproof doors, but can also be applied to soundproofing the soundproof door and its peripheral members (for example, a soundproof wall body). Furthermore, the sealing mechanism illustrated in this embodiment can be used between two soundproof doors that are opened and closed as the doors.
As shown in FIG. 12, seal mechanisms 94 and 95 can be applied to a frame 92 and a sliding door type soundproof wall 93 that slides relative to the frame 92.

Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.
In addition, the technical elements described in the present specification or drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

The front view of a soundproof wall. II-II sectional view taken on the line of FIG. FIG. 3 is a detailed view of part III in FIG. 1 (longitudinal sectional view of a state in which seal mechanisms are adjacent to each other). FIG. 4 is a sectional view taken along line IV-IV in FIG. 3 (soundproof door closed state). Sectional drawing of a seal mechanism (soundproof door open state). Sectional drawing of a sealing mechanism (soundproof door closed state). Same as above. Same as above. Sectional drawing of the state which closed the some soundproof door. Same as above. A graph summarizing measured values of noise level. Sectional drawing at the time of applying a sealing mechanism to a sliding door. Sectional drawing of a sealing mechanism (soundproof door closed state). Sectional drawing of the sealing mechanism which concerns on a prior art.

Explanation of symbols

11: Press machine 12: Soundproof wall, 12a: Soundproof wall main body 13, 14: Door 15: Handle 16, 17: Window 18: Hinge 20: Work storage box 21: Chute 23-32: Soundproof door 40: Left seal mechanism 41 : Right seal mechanism 42: outer case member 43: inner case member 44: seal member 45: pressing member 46: spring 47, 49: bolt 48, 50: nut 51: inner space 52: opening 54: seal member 55: outer Case member 56: Inner case member 57: Opening 58: Inner space 59: Arrow 60 indicating the closing direction of the soundproof door 60: Tangent line passing through the contact point between the seal members 61: Line 64 extending in the opening / closing direction of the soundproof door 64: Sealing surface 74: 1st seal mechanism 75: 2nd seal mechanism 76: 3rd seal mechanism 77: 4th seal mechanism 78: 5th seal mechanism 79: 6th seal mechanism 80: 1st seal Material 81: second sealing member 82: third seal member 83: fourth seal member 84: fifth sealing member 85: sixth seal member 92: Frame 93: sliding doors 94, 95: sealing mechanism

Claims (3)

A soundproof door set in which a plurality of soundproof doors are arranged adjacent to each other,
The seal mechanism mounted on the door body of each soundproof door has a roller, a support means for supporting the roller so as to be movable within a predetermined area, and a means for pressing the outer peripheral surface of the roller against the roller of the adjacent soundproof door. And
A soundproof door set, characterized in that the pressing roller and the roller shaft are eccentric in the opening and closing direction of the soundproof door. The support means includes an inner case member and an outer case member, and an inner space surrounded by the inner case member and the outer case member.
Has a slit-shaped opening,
The roller is disposed so as to be movable in an internal space, and a part of an outer peripheral surface of the roller is exposed to the outside through an opening while being urged by the pressing means. 1 soundproof door set. The press apparatus which has a soundproof door set of Claim 1 or 2.

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